CN100460774C - Fluid heating device and washing device using the device - Google Patents

Abstract

On the upper surface of one end side of the main body of the box body of the fluid heating device, a washing water inlet for receiving washing water is provided, and on the upper surface of the other end side of the main body of the box body, a washing water inlet for feeding heated washing water is provided. Wash water outlet for use in the pump. A linear sheathed heating element is arranged through the main body of the box. A coiled spring is wound around the outer peripheral surface of the sheathed heating element. The flow path is formed by the outer surface of the sheathed heating element, the spring, and the inner surface of the case main body. The flow path is formed in a spiral shape whose axis is the longitudinal direction of the case main body.

Description

Fluid heating device and washing device using the device

technical field

The present invention relates to a fluid heating device for heating fluid and a washing device using the fluid heating device.

Background technique

Conventionally, a sanitary washing device for washing a part of the human body has a heating device for heating washing water for washing at an appropriate temperature so as not to make the human body feel uncomfortable. Sanitation washing devices equipped with such a heating device mainly include a hot water storage type sanitation washing device and an instant heating type sanitation washing device.

A hot water storage type sanitary washing device has a hot water tank capable of storing a predetermined amount of washing water while using a built-in heating element to heat the washing water to a specified temperature (refer to Japanese Patent Application Laid-Open No. 2003-106669). When washing the parts of the human body, the washing water heated to a predetermined temperature in the hot water tank in advance is sent from the nozzle by using the pressure of the water pipe or the pump.

Fig. 39 is a schematic sectional view of a hot water tank unit of a conventional hot water storage type sanitary washing device. The hot water tank unit of this hot water storage type sanitary washing machine is described in Japanese Patent Application Laid-Open No. 2002-322713.

As shown in FIG. 39 , in this hot water tank unit, a thermistor 904 detects the temperature of washing water in a hot water tank 901 through a heat sensitive plate 903 . Based on the temperature detected by the thermistor 904, the control circuit 905 issues a heating instruction to the heating element 902 provided in the hot water tank 901 for heating water.

With this hot water tank unit, it is possible to heat and store wash water previously stored in hot water tank 901 . Moreover, in this hot water tank unit, by providing the heat sensitive plate 903 extending downward from the top of the hot water tank 901, the temperature of the washing water can be transmitted to the thermistor 904 regardless of the posture of the hot water tank. It can prevent the hot water tank from burning dry.

However, before this hot water storage type sanitary washing device washes the parts of the human body, the washing water in the hot water tank must be maintained at a predetermined temperature in advance. Therefore, it is necessary to constantly supply electric power to the heating device, which consumes a lot of electric power. And when multiple people use it continuously to wash the parts of the human body, when the amount of use exceeds the amount of washing water heated to a prescribed temperature in the hot water tank in advance, the temperature of the washing water in the hot water tank drops to a temperature less than or equal to the prescribed temperature, making the People feel unhappy.

On the other hand, the instant heating type sanitary washing device uses a heating device that can quickly heat up the washing water to heat the washing water in an instant when washing the local parts of the human body, and uses the pressure in the water pipe or pump to pressurize the washing water. , the method of spraying from the nozzle.

Therefore, it is not necessary to constantly supply electric power to the heating device, so the power consumption is small. Moreover, when a plurality of people perform local washing continuously, and the consumption exceeds the amount of washing water heated to a predetermined temperature in the hot water tank in advance, the temperature of the washing water in the hot water tank will not drop to a temperature less than or equal to the prescribed temperature. make people feel unpleasant.

In addition, research and development of a heating device having both a hot water storage type sanitary washing device and an instant heating device are underway. This heating device having the structure of a hot water storage type sanitary washing device and an instant heating device is described in Japanese Patent Application Laid-Open No. 2003-106669.

Fig. 40 is a schematic diagram of an existing heating device having both a hot water storage type sanitary washing device and an instant heating device.

As shown in FIG. 40 , in such a heating device, washing water is stored in a hot water tank 982 from an inlet 980 . A communication pipe 983 is provided in the hot water tank 980 , and washing water flows into a heating chamber 984 provided in the hot water tank 980 through the communication pipe 983 . In the heating chamber 984, a cylindrical heating element 986 is provided, and washing water flows into a washing nozzle 987 while being heated by the cylindrical heating element 986. In this way, hot water is sprayed from the nozzle 987 for washing.

In this heater, the heating chamber 984 is provided in the hot water tank 980, so the wash water previously stored in the hot water tank 980 is heated to a certain temperature. And before the washing water is sprayed from the nozzle 987 for washing, it is heated again by the heating element 986 . With this, while reducing power consumption, it is possible to spray moderately heated washing water.

However, it is difficult to miniaturize such a heating device.

And implement the heating device of sanitation washing device to use ceramic heating element usually. Such a ceramic heating element is described in Japanese Patent Application Laid-Open No. 10-160249.

Fig. 41 is a perspective view of an example of a conventional ceramic heating element.

As shown in FIG. 41, a ceramic heating element is provided to divide the inside of the hot water tank 954 into two parts. A plurality of protruding plates 953 are provided on the ceramic heating element 952 to form a flow path meandering along the ceramic heating element 952 . With this, it is possible to realize a hot water device with highly efficient heat exchange and good control response.

However, it is difficult to miniaturize such a ceramic heating element.

In addition, research and development of heating devices that can be miniaturized compared with the above-mentioned ceramic heating elements are also being conducted. Such a heating device is described in Japanese Unexamined Patent Publication No. 2001-279786.

Fig. 42 is a schematic sectional view of a conventional heating device.

As shown in FIG. 42 , such a heating device has a double-tube structure consisting of a cylindrical base tube 961 and an outer tube 962 . A heating element 963 is provided outside the base tube 961 . Furthermore, a helical core 965 is inserted into the base tube 961 . The washing water is heated by the heating element while flowing between the spiral core 965 and the base tube 961 . As a result, moderately heated wash water can be supplied by a small heating device.

However, in such a heating device, since the heat from the heating element 963 is released to the outside of the base pipe 961, the heat exchange efficiency is not good. Furthermore, since the helical core 965 is provided inside the heating element 963, the material constituting the helical core 965 is limited to heat-resistant materials.

In addition, in recent years, hot water has been added to the washing tub for washing in clothes washing machines. Two water supply valves are configured in the existing clothes washing device, one is connected to the faucet as the water supply valve on the water supply side, and the other is connected to the water heater as the water supply valve for hot water. In this conventional clothes washing device, the temperature of the hot water supplied varies greatly due to the difference in the capacity of the water heater and the temperature of tap water, and the temperature of the hot water is in an unstable state during the supply of hot water. As a result, if the water pressure drops and the temperature of the hot water rises excessively, clothes may be scalded by the hot water. Therefore, Japanese Patent Laying-Open No. 5-161781 discloses a clothes washing device capable of stably supplying hot water at a set temperature even when the temperature of hot water in a water heater or tap water varies.

Fig. 43 is a schematic sectional view of a conventional clothes washing device.

As shown in FIG. 43, in this clothes washing apparatus, a water pipe side water supply valve 984 for supplying washing water from a faucet to the washing tub 981 and a hot water supply valve 985 for supplying hot water from a water heater to the washing tub 981 are provided. .

The thermistor 983 that detects the water temperature in the washing tank 981 is set on the clothes washing device again, and the heating element 982 that adjusts the water temperature in the washing tank 981 is set in the bottom of the washing tank 981 .

With this, when the hot water in the washing tub 981 is lower than a desired temperature, the temperature of the hot water can be adjusted by the heating element 982 or hot water can be supplied from the hot water supply valve 985 . When the temperature of hot water in washing tub 981 is higher than desired, water can be supplied from water supply valve 984 on the water pipe side. As a result, in this clothes washing apparatus, the water temperature in washing tub 981 can be maintained at a predetermined temperature.

However, in this clothes washing device, it takes a relatively long time to boil the water by the heating element 982, so the time required for washing is long. As a result, the washing performance of the clothes washing machine is reduced.

Contents of the invention

An object of the present invention is to provide a fluid heating device that is compact and has high heat exchange efficiency.

Another object of the present invention is to provide a washing machine equipped with a compact fluid heating device having high heat exchange efficiency.

A fluid heating device according to the present invention includes a casing and a heating element housed in the casing, and further includes a flow path formed between the outer surface of the heating element and the inner surface of the casing to generate turbulence in at least a part of the flow path. Turbulence generating mechanism.

In such a fluid heating device, the fluid is heated by flowing through the flow path formed between the outer surface of the heating element and the inner surface of the box. In this case, the turbulent flow is generated in at least a part of the flow path by the turbulent flow generating means to agitate the fluid. And because the fluid flows through the outer surface of the heating element, the heat released by the heating element can be completely supplied to the fluid. Therefore, heat from the heating element can be efficiently supplied to the fluid. As a result, a fluid heating device that can be downsized and has high heat exchange efficiency can be realized.

Moreover, since the fluid is in a state of turbulent flow, it is possible to reduce deposits such as scale on the surface of the heating element and prolong the life of the heating device.

The turbulent flow generating means may be provided in a portion where the velocity of the fluid flowing through the flow path is low.

In this case, the fluid can be brought into a turbulent flow state at the portion where the fluid velocity is low. As a result, deposits such as scale on the surface of the heating element can be reduced, and the life of the fluid heating device can be extended.

The turbulent flow generating means may also be provided on the downstream side of the flow path. In this case, the fluid can be kept in a turbulent state on the downstream side where the flow velocity of the fluid tends to be low, and since there is no turbulent flow generating mechanism in the part other than the downstream side of the flow path, the pressure of the flow path can be prevented. loss.

The turbulent flow generating means may also be provided intermittently on the flow path. In this case, since the turbulent flow generating means is provided intermittently, it is possible to prevent pressure loss in the flow path compared to the case where the turbulent flow generating means is mainly provided.

The turbulent flow generating means may also be provided on the upstream side of the flow path. In this case, since the turbulent flow generating means is provided on the upstream side of the flow path, the pressure loss of the flow path can be prevented compared to the case where the turbulent flow generating means is mainly provided.

The heating element may also be in the shape of a rod having a circular or elliptical cross section. In this case, the fluid flows smoothly through the outer surface of the heat generating body, so the pressure loss can be reduced. Furthermore, since the structure of the heating element becomes simple, the manufacture of the fluid heating device becomes easy.

The turbulent flow generating means may include a helical member wound along the outer peripheral surface of the heating element. In this case, the fluid forms a helical flow along the outer peripheral surface of the heat generating body by means of the helical member.

As a result, the flow distance of the fluid becomes longer than when the fluid flows linearly along the peripheral surface of the heat generating body, so the flow velocity of the fluid increases. Therefore, the fluid can efficiently absorb the heat generated by the heating element while maintaining the turbulent state. Moreover, since the fluid is in a state of turbulent flow, it is possible to reduce scale and other deposits on the surface of the heating element and prolong the life of the fluid heating device.

The helical member may also be composed of a helical spring. In this case, since the fluid flows through the flow path constituted by the coil spring, the coil spring having elastic force vibrates. As a result, deposits such as scale on the surface of the heating element can be reduced, and the life of the fluid heating device can be extended.

Moreover, a fluid heating device can be manufactured by inserting a heating element into a coil spring and covering it with a case. Therefore, it is easy to manufacture the fluid heating device, and the manufacturing cost can be reduced.

The case may have a cylindrical fluid inlet and a cylindrical fluid outlet provided in parallel to the winding direction of the helical member. In this case, since the cylindrical fluid inlet and the cylindrical fluid outlet are arranged parallel to the winding direction of the helical member, the fluid flows smoothly from the cylindrical fluid inlet to the flow path, and from the flow path to the cylindrical The fluid outlet, so it can prevent the pressure loss of the fluid.

The casing has a fluid inlet and a fluid outlet, and at least one of the fluid inlet and the fluid outlet can also be arranged at a position deviated from the central axis of the heating body, so that the fluid flows in from the direction along the peripheral surface of the heating body or from along the heating body. Outflow in the direction of the peripheral surface.

In this case, the fluid flowing in from the fluid inlet flows spirally along the outer peripheral surface of the heat generating element, or the fluid flowing spirally flows toward the fluid outlet from a direction along the outer peripheral surface of the heat generating element. As a result, pressure loss of the fluid can be prevented. And because the fluid can form a spiral flow, the fluid can efficiently absorb the heat generated by it from the heating element.

The heating element may have a maximum heat generation value of substantially greater than or equal to 1.5 kW and substantially less than or equal to 2.5 kW. In this case, it is possible to raise the temperature of water which is the inflowing fluid to a predetermined temperature (substantially 40° C.) in summer, mid-season, and winter.

The heating element may have a performance capable of making the maximum gradient of the rate of increase in fluid temperature substantially equal to or greater than 10K per second.

In this case, the temperature of the fluid can be raised in a short time. There is therefore no overshoot or undershoot in the fluid temperature control response. Furthermore, since the thermal response speed of the heating element is fast, it is suitable for heating the washing water whose temperature is stable with a fluctuation range of about 1°C. As a result, the temperature of the washing water desired by the user can be quickly controlled.

The heating element may also include a sheathed heating element. In this case, it is possible to manufacture an inexpensive heat generating element that is not easily damaged.

The sheathed heating element may also have a maximum power density substantially greater than or equal to 30 W/cm ² and less than or equal to 50 W/cm ² .

In this case, the temperature of the fluid can be raised in a short time. Therefore, there is no overshoot or undershoot in the fluid temperature control response. Furthermore, since the thermal response speed of the heating element is fast, it is suitable for heating the washing water whose temperature is stable with a fluctuation range of about 1°C. As a result, the temperature of the washing water desired by the user can be quickly controlled.

The heating element may also include a ceramic heating element. In this case, since the heat capacity is small, there is no need to increase the power density, and the life can be extended.

It also includes a temperature detector for detecting the temperature of the heating element, and a control device for controlling the power supplied to the heating element based on the temperature detected by the temperature detector.

In this case, since the temperature of the heating element can be controlled to a predetermined temperature by the control device, the temperature of the fluid absorbing heat from the heating element can be adjusted to a predetermined temperature, and a fluid having a stable temperature can be provided.

A heat-sensitive plate may be further provided in contact with the heat-generating body and has a portion protruding outside the box, and a temperature detector may be provided outside the box to detect the temperature of the heat-generating body through the heat-sensitive plate.

In this case, even if it is difficult to mount the temperature detector due to the shape of the heat generating body, it is easy to mount the temperature detector through the heat sensitive plate.

The heating element may have a heating portion and a non-heating portion, and the heat-sensitive plate may be provided in contact with the non-heating portion of the heating element.

In this case, the heat generated by the heating element is also transferred to the non-heating portion. By providing the heat-sensitive plate in the non-heat-generating portion, the temperature of the heat-generating portion can be estimated from the temperature detected by the temperature detector. Moreover, since the heat-sensitive plate is not directly installed on the heat-generating part, the temperature of the heat-sensitive plate can be prevented from excessively rising or fluctuating.

It is also possible that the box body has a fluid inlet and a fluid outlet, and the heat-sensitive plate is arranged to be in contact with the heating element near the fluid outlet of the box body.

In this case, the heat-sensitive plate is provided so that the vicinity of the fluid outlet contacts the heat-generating body, so that the temperature change of the heat-sensitive plate can be made more significant, and the temperature of the fluid flowing out of the fluid heating device can be accurately estimated.

The heat sensitive plate may also be bonded to the heat generating body. In this case, the relative stability between the heat-sensitive plate and the heating body can be maintained. As a result, the temperature can be accurately detected by the detector.

The heat sensitive plate can also be brazed to the heating element. In this case, brazing can be used to maintain the relative stability between the heat-sensitive plate and the heating element. As a result, the temperature can be more accurately detected by the detector.

The heat-sensitive plate may also have a leakage prevention function for preventing leakage of the fluid in the housing.

In this case, since the heat-sensitive plate also serves as the leakage prevention means, the manufacturing cost can be reduced while the assembly performance can be improved.

The heat sensitive plate can also be made of metal. In this case, since the thermal conductivity of the heat-sensitive plate made of metal is good, the temperature of the heating element can be transmitted to the temperature sensor quickly and accurately.

The heat sensitive plate can also consist of a copper plate. In this case, since copper has excellent thermal conductivity and long-term corrosion resistance, the temperature of the heating element can be quickly and accurately transmitted to the temperature detector for a long period of time.

The heat sensitive plate may be substantially L-shaped. In this case, since no large portion protruding from the outer shape of the fluid heating device is formed, it is possible to reduce the size of the fluid heating device.

The fluid heating device may further include a fluid contacting channel, a heat transfer member protruding outside the case, and an electronic component provided on a part of the heat transfer member protruding outside the case.

In this case, the heat generated by the electronic component is supplied to the fluid through the heat transfer member, so that the cooling effect of the electronic component can be ensured.

The tank may also have a fluid inlet and a fluid outlet, and the heat transfer member is arranged in contact with the fluid near the fluid inlet of the tank.

In this case, since the heat transfer member is in contact with the fluid before being heated by the heating element near the fluid inlet, the cooling effect of the electronic component by the heat transfer member can be further ensured. Furthermore, the temperature of the fluid can be increased near the fluid inlet.

The heat transfer member may also have a leakage prevention function for preventing fluid leakage in the case.

In this case, since the heat transfer member also functions as a leak prevention means, it is possible to reduce manufacturing cost while improving assembly performance.

The heat transfer member may also consist of metal. In this case, since the heat transfer member made of metal has good thermal conductivity, it is possible to quickly and accurately transfer the temperature of the heating element to the temperature detector.

The heat transfer member may also consist of a copper plate. In this case, since copper has excellent thermal conductivity and long-term corrosion resistance, the temperature of the heating element can be quickly and accurately transmitted to the temperature detector for a long period of time.

The heat transfer member may also be formed in a substantially L-shape. In this case, since no large portion protruding from the outer shape of the fluid heating device is formed, it is possible to reduce the size of the fluid heating device.

It may also be that the box body includes a plurality of box body parts, and the heating element includes a plurality of heating element parts respectively accommodated in the plurality of box body parts, and is respectively formed between the inner surface of each box body part and the outer surface of each heating element part. In the flow path, the turbulence generating mechanism further includes a plurality of turbulence generating mechanism parts that generate turbulence in at least a part of each of the plurality of flow paths.

In this case, since a plurality of heating body parts are provided, the maximum heating capacity of the fluid heating device can be increased. As a result, the flow rate at a predetermined temperature can be ensured according to the preference of the user or the usage environment.

Each of the plurality of tank parts has a fluid inlet and a fluid outlet, and the fluid outlet of one tank part is formed to be fittable with the fluid inlet of the other tank part.

In this case, since the fluid outlet of one tank part can be fitted with the fluid inlet of another tank part, a plurality of tank parts can be connected without using a new member.

Each of the plurality of tank parts may have a fluid inlet and a fluid outlet, and may further include a connecting member that connects the fluid outlet of one tank part to the fluid inlet of the other tank part.

In this case, the fluid flowing from the fluid outlet of one tank part can be supplied to the fluid inlet of the other tank part by means of the connection member. As a result, a plurality of box parts can be connected.

Multiple housing parts may also have the same shape. In this case, cost reduction can be sought.

Another washing device of the present invention is a washing device that sprays fluid supplied from a water supply source to the body to be washed, and includes a fluid heating device that heats the fluid supplied from the water supply source while flowing, and A spraying device that sprays the fluid heated by the fluid heating device toward the human body. The fluid heating device has a box and a heating element accommodated in the box. The outer surface of the heating element is in contact with the inside of the box. A flow path is formed between the surfaces, and at least a part of the flow path is provided with a turbulent flow generating mechanism for generating turbulent flow.

In such a washing device, the washing water heated by the fluid heating device can be sprayed from the spraying device toward the human body.

In this washing machine, the fluid is heated by flowing the fluid through the flow path formed between the outer surface of the heating element and the inner surface of the box. In this case, the fluid is agitated by generating turbulent flow in at least a part of the flow path by the turbulent flow generating means.

Moreover, since the fluid flows through the outer surface of the heating element, all the heat emitted by the heating element can be supplied to the fluid. Therefore, heat from the heating element can be efficiently supplied to the fluid. As a result, it is possible to realize a washing device using a fluid heating device that can be downsized and has high heat exchange efficiency. With this, it is possible to spray washing water at a comfortable temperature.

Still another washing device of the present invention is a washing device for washing clothes with a fluid provided by a water supply source, and includes a washing tank, a fluid heating device that heats the fluid provided by the water supply source while flowing, and a fluid heating device that uses a fluid to The heated fluid is supplied to the supply device in the washing tank. The fluid heating device has a box body and a heating element accommodated in the box body. A flow path is formed between the outer surface of the heating element and the inner surface of the box body. At least a part of the path is further provided with a turbulent flow generating mechanism for generating turbulent flow.

In this washing machine, the fluid heated by the fluid heating means is supplied into the washing tank for washing.

In this fluid heating device, the fluid is heated by flowing the fluid through the flow path formed between the outer surface of the heating element and the inner surface of the case. In this case, the fluid is agitated by generating turbulent flow in at least a part of the flow path by the turbulent flow generating mechanism. Moreover, since the fluid flows through the outer surface of the heating element, all the heat emitted by the heating element can be provided to the fluid. Therefore, heat from the heating element can be efficiently supplied to the fluid.

As a result, it is possible to realize a washing device using a fluid heating device that can be downsized and has high heat exchange efficiency. With this, dirt on the laundry can be efficiently removed. Therefore, the washing time can be shortened, and high-performance washing can be performed.

According to the present invention, fluid can be heated by a fluid heating device which is small in size and has high heat exchange efficiency, and the heated fluid can be used to wash laundry and the like.

Description of drawings

Fig. 1 is a perspective view showing a state in which a sanitary washing device according to a first embodiment is attached to a toilet.

Fig. 2 is a schematic diagram showing an example of the remote operation device of Fig. 1 .

Fig. 3 is a schematic structural view of the main body of the sanitary washing device according to the first embodiment.

Fig. 4 is a schematic cross-sectional view illustrating the internal structure of the fluid heating device.

Fig. 5 is a schematic cross-sectional view showing the internal structure of the sheathed heating element.

Fig. 6 is a sectional view showing an internal structure of a sheathed heating element of the fluid heating device of Fig. 4 .

Fig. 7 is a cross-sectional view of the fluid heating device shown in Fig. 4 .

Fig. 8 is a flow velocity distribution diagram of wash water flowing through the inside of the flow channel.

Fig. 9 is a flow velocity distribution diagram of wash water flowing through the inside of the flow channel.

Fig. 10 is a cross-sectional view showing another example of a fluid heating device.

Fig. 11 is a cross-sectional view showing another example of a fluid heating device.

Fig. 12 is a cross-sectional view of the sanitary washing device of Fig. 1 mounted on the toilet when used on a human body.

Fig. 13 is a schematic diagram of an example of the remote operation device of the sanitary washing device according to the second embodiment.

Fig. 14 is a configuration diagram of a main body of a sanitary washing device according to a second embodiment.

Fig. 15 is a schematic perspective view of the structure of the fluid heating device.

Fig. 16 is a schematic cross-sectional view of an example of a fluid heating device of the fluid heating unit of Fig. 15 .

Fig. 17 is a schematic diagram for explaining how to arrange the fluid heating device.

Fig. 18 is a schematic plan view showing another example of a fluid heating unit.

Fig. 19 is a schematic plan view showing still another example of a fluid heating unit.

Fig. 20 is a schematic cross-sectional view of an example of a fluid heating device used in the fluid heating unit of Fig. 19 .

Fig. 21 is a schematic sectional view showing still another example of a fluid heating device.

Fig. 22 is a cross-sectional view showing an example of the structure of a fluid heating device according to a third embodiment.

Fig. 23 is an explanatory diagram illustrating the internal structure of the fluid heating device shown in Fig. 22 .

Fig. 24 shows the heating characteristics of the fluid heating device according to the third embodiment.

Fig. 25 is a characteristic diagram showing the temperature rise of the washing water in the fluid heating device according to the third embodiment.

Fig. 26 is a temperature control response characteristic diagram of washing water in the fluid heating device according to the third embodiment.

Fig. 27 is a schematic sectional view showing a fluid heating device according to a fourth embodiment.

Fig. 28 is a schematic sectional view of another example of a fluid heating device.

Fig. 29 is a schematic cross-sectional view of still another example of a fluid heating device.

FIG. 30 is a side view of the fluid heating device of FIG. 29 .

Fig. 31 is a schematic sectional view showing a fluid heating device according to a fifth embodiment.

Fig. 32 is a schematic longitudinal sectional view showing an example of a clothes washing machine using a fluid heating device according to an embodiment of the present invention.

Fig. 33 is a schematic sectional view of the clothes washing device shown in Fig. 32 .

Fig. 34 shows the path of the washing water in the case where the washing water supplied from the water supply port is heated by the fluid heating device and supplied into the washing tub.

FIG. 35 shows the path of the washing water supplied to the washing tub after heating the washing water once supplied to the washing tub.

Fig. 36 shows the path of washing water in the case where warm water containing detergent is supplied to the washing tub.

Fig. 37 shows the path of the washing water when clean water is supplied to the washing tub in the clothes washing apparatus.

Fig. 38 is a schematic sectional view showing another example of a fluid heating device used in a clothes washing machine.

Fig. 39 is a schematic sectional view of a hot water tank unit of a conventional hot water storage type sanitary washing device.

Fig. 40 is a schematic diagram of a heating device having the structures of a conventional hot water storage type sanitary washing device and an instant heating type heating device.

Fig. 41 is a perspective view showing an example of a conventional ceramic heating element.

Fig. 42 is a schematic sectional view of a conventional heating device.

Fig. 43 is a schematic sectional view of a conventional clothes washing machine.

Detailed ways

Next, a sanitary washing device including a fluid heating device according to an embodiment of the present invention will be described with reference to the drawings. Next, a clothes washing device including a fluid heating device according to an embodiment of the present invention will be described with reference to the drawings.

1st embodiment

Next, a sanitary washing device including the fluid heating device according to the first embodiment of the present invention will be described.

Fig. 1 is a perspective view showing a state in which a sanitary washing device according to a first embodiment is attached to a toilet.

As shown in FIG. 1 , a sanitary washing device 100 is installed on a toilet 610 . The water tank 700 is connected to a water pipe to provide washing water to the toilet 610 .

The sanitary washing device 100 is composed of a main body 200 , a remote operation device 300 , a toilet seat 400 , and a cover 500 . The sanitary washing machine 100 is supplied with a certain amount of power from the power supply port 990 .

The toilet seat part 400 and the cover part 500 are attached to the main body part 200 openably and closably. Moreover, the seating detection device 620 is provided on the main body part 200 . In addition, a fluid heating unit insertion port 970 is provided on the side surface of the main body part 200 . The seat occupancy detection device 620 and the fluid heating unit insertion port 970 will be described below.

The washing water supply mechanism including the nozzle part 30 is provided in the main body part 200, and the control part is built in. The control unit of the main body unit 200 controls the washing water supply mechanism based on the signal transmitted from the remote operation device 300 as described below. Moreover, the control part of the main body part 200 also controls the heating element built in the toilet seat part 400, the deodorizer (not shown) provided in the main body part 200, the warm air supply device (not shown), etc. are controlled.

FIG. 2 is a schematic diagram showing an example of the remote operation device 300 of FIG. 1 .

As shown in FIG. 2 , the remote operation device 300 has a plurality of LEDs (light emitting diodes) 301, a plurality of adjustment switches 302, a hip switch 303, a stimulation switch 304, a stop switch 305, a lower basin switch 306, a drying switch 307, and Deodorization switch 308.

The adjustment switch 302 , the buttock switch 303 , the stimulation switch 304 , the stop switch 305 , the lower basin switch 306 , the drying switch 307 , and the deodorizing switch 308 are pressed and operated by the user. With this, the remote operation device 300 wirelessly transmits a predetermined signal to a control unit provided on the main body unit 200 of the sanitation washing device 100 described later. The control unit of the main body unit 200 receives a predetermined signal wirelessly transmitted by the remote operation device 300, and controls the washing water supply mechanism and the like.

For example, the user moves the nozzle part 30 of the main body part 200 of FIG. 1 by pressing and operating the hip switch 303 or the lower bidet switch 306 to spray washing water. When the stimulation switch 304 is pressed, the washing water that stimulates the part of the human body is sprayed from the nozzle 30 of the main body 200 in FIG. 1 . By pressing stop switch 305, spraying of washing water from nozzle unit 30 is stopped.

In addition, by pressing and operating the drying switch 307, hot air is sprayed from the hot air supply device (not shown) of the sanitary washing device 100 to a part of the human body. By pressing and operating the deodorizing switch 308, the surrounding area is deodorized by a deodorizing device (not shown) of the sanitary washing device 100 .

The user presses and operates the adjustment switch 302 to change the position of the nozzle 30 of the main body 200 of the sanitary washing device 100 in FIG. pressure. Also, as the adjustment switch 302 is pressed, a plurality of LEDs (Light Emitting Diodes) 301 light up.

Hereinafter, the main body part 200 of the sanitary washing apparatus 100 of 1st Embodiment is demonstrated. Fig. 3 is a schematic structural view of the main body 200 of the sanitary washing device 100 according to the first embodiment.

The main body 200 shown in FIG. 3 includes a control unit 4, a branch faucet 5, a filter screen 6, a backflow prevention valve 7, a constant flow valve 8, a water stop solenoid valve 9, a flow sensor 10, a fluid heating device 11a, a temperature sensor 12a, The temperature sensor 12b, the temperature fuse 12c, the pump 13, the switching valve 14, and the nozzle part 30.

As shown in FIG. 3 , a branch water tap 5 is added to the water pipe 201 . Also, on the piping 202 connected between the branch faucet 5 and the fluid heating device 11a, a filter screen 6, a backflow prevention valve 7, a constant flow valve 8, a water stop solenoid valve 9, a flow sensor 10, and a temperature sensor 12a are sequentially added. . In addition, the temperature sensor 12b and the pump 13 are added to the piping 203 connected between the fluid heating device 11a and the switching valve 14 .

First, the clean water flowing through the water pipe 201 flows from the branch faucet 5 to the filter 6 as washing water. Impurities such as garbage contained in the washing water are removed by the filter 6 . Next, the reverse flow of the washing water in the water pipe 202 is prevented by the backflow prevention valve 7 . Then, the flow rate of the washing water flowing through the water pipe 202 is maintained at a certain amount by the constant flow valve 8 .

Also, a pressure-reducing pipe 204 is connected between the pump 13 and the switching valve 14 , a water-discharging pipe 205 is connected between the water stop solenoid valve 9 and the flow sensor 10 , and a pressure-reducing valve 206 is inserted into the pressure-reducing pipe 204 . The pressure-reducing valve 206 is opened when the pressure on the downstream side of the piping, especially the pump 13, exceeds a predetermined value, so as to prevent damage to the machine and prevent the hose from falling off when an abnormality occurs. On the other hand, the flow rate is adjusted by the constant flow valve 8 , and the washing water in the clean water that has not been sucked by the pump 13 is discharged from the water discharge pipe 205 . With this, the back pressure acting on the pump 13 is set to a predetermined back pressure regardless of the water supply pressure in the water pipe.

Next, the flow sensor 10 measures the flow rate of the washing water flowing through the piping 202 , and supplies the measured flow rate value to the control unit 4 . Moreover, the temperature sensor 12 a measures the temperature of the washing water flowing through the piping 202 , and supplies the temperature measurement value to the control unit 4 .

Next, the fluid heating device 11 a heats the washing water supplied through the pipe 202 to a predetermined temperature based on the control signal supplied from the control unit 4 . The temperature sensor 12b measures the temperature of the washing water heated to a predetermined temperature by the fluid heating device 11a, and supplies a temperature excess signal to the control unit 4 when the temperature exceeds the predetermined temperature. In this case, the control unit 4 cuts off the power supply to the fluid heating device 11a.

The thermal fuse 12c detects the temperature of the fluid heating device 11a, and cuts off the power supply to the fluid heating device 11a when the temperature exceeds a predetermined temperature.

The pump 13 pressurizes the washing water heated by the fluid heating device 11 a to the switch valve 14 according to the control signal provided by the control unit 4 . The switching valve 14 supplies wash water to any one of the rear nozzle 1 , the bidet nozzle 2 , and the nozzle washing nozzle 3 of the nozzle unit 30 in accordance with a control signal supplied from the control unit 4 . With this, the wash water is sprayed from any one of the rear nozzle 1 , the lower bowl nozzle 2 , and the nozzle washing nozzle 3 .

When there is a signal from the seating detector 620, the control unit 4 determines that there is someone sitting on the toilet seat 400, and measures the flow rate based on the signal sent by the remote operation device 300 of FIG. Value, the measured temperature value provided by the temperature sensor 12a and the temperature exceeding signal provided by the temperature sensor 12b provide control signals to the water stop solenoid valve 9, the fluid heating device 11a, the pump 13, and the switching valve 14. When the signal from the seat occupancy detection device 620 disappears, the control unit 4 determines that no one is seated on the toilet seat 400 and invalidates the wirelessly transmitted signal from the remote operation device 300 of FIG. 1 .

In addition, a certain amount of electric power is supplied to the control unit 4 from the power supply port 990 . Electric power supplied from the control unit 4 is supplied to the fluid heating device 11a, the pump 13, the switching valve 14, and the like.

Next, FIG. 4 is a schematic cross-sectional view for explaining the internal structure of the fluid heating device 11a.

As shown in FIG. 4, the fluid heating device 11a is mainly composed of a rectangular parallelepiped box body 600, a sheathed heating element 505, a spring 515a, elastic support members P1, P2, and end surface support members 600a, 600b.

A washing water inlet 511 for receiving washing water supplied from the pipe 202 (refer to FIG. A washing water outlet 512 for sending heated washing water to the pump 13 (see FIG. 3 ) is provided on the surface.

A linear sheathed heating element 505 is disposed through the inside of the box main body portion 600 . A coiled spring 515 a made of copper is wound around the outer peripheral surface of the sheathed heating element 505 .

The flow path 510 is formed by the outer peripheral surface of the sheathed heating element 505 , the spring 515 a , and the inner peripheral surface of the case main body 600 . The flow path 510 is formed in a spiral shape with the longitudinal direction of the case main body 600 as an axis. The cross-sectional area of the flow path 510 is determined by the outer peripheral surface of the sheathed heating element 505 , the spring 515 a , and the inner peripheral surface of the case main body 600 .

End surface support members 600a, 600b are attached to both end surfaces of the box main body portion 600 via elastic support members P1, P2, respectively. This closes the gap between the openings at both ends of the box main body 600 described below and the sheathed heating element 505 .

In addition, O-rings P3 and P4 are respectively provided between the two end faces of the box main body 600 and the elastic support members P1 and P2, and O-rings are provided between the end face support members 600a and 600b and the elastic support members P1 and P2. P5, P6. This prevents washing water from flowing out from the joints between both end surfaces of the housing body 600 and the end support members 600a, 600b and between the terminals 506, 507 and the end support members 600a, 600b. In addition, the elastic support members P1 and P2 also serve to support the sheathed heating element 505 .

When the fluid heating device 11a is used in the sanitary washing device 100, the flow rate of the wash water that can be heated by the fluid heating device 11a is substantially 100 mL to 2000 mL per minute. The flow rate of the washing water that the user can feel has been sufficiently washed is substantially equal to or greater than 1000 mL per minute.

When it is desired to ensure a flow rate of more than 1000 mL per minute, the outer diameter of the heating element 505 with a sheath is about 3 mm to 20 mm, the inner diameter of the main body of the box 600 is about 5 mm to 30 mm, and the outer peripheral surface of the heating element 505 with a sheath The pitch of the wound springs 515a is about 3 mm to 20 mm.

Also, the wire diameter of the spring 515a is preferably about 0.1 mm to 3 mm from the viewpoint of processing. In addition, the spring 515a may not be completely fixed to the sheathed heating element 505, but may be fixed at one end. In this case, since a part of the spring 515 can slide freely, the pressure of the washing water and the elastic force of the spring 515 cause the vibration of the spring 515a. Adhesion of scale can be prevented by means of this vibration. Also, the distance between the springs 515a may be constant, but it is not limited thereto, and some distances may be larger, while the distances between other parts may be smaller. With this, the turbulent flow state of the wash water described below can be more efficiently generated.

In addition, the spring 515a used in the above-mentioned fluid heating device may also be replaced by a spring made of other metals, a helical metal wire having no elasticity, a helical resin, or the like.

Next, FIG. 5 is a schematic cross-sectional view showing the internal structure of the sheathed heating element 505 .

As shown in FIG. 5 , the sheathed heating element 505 is mainly formed of a sheathed tube 505 a , a heating element wire 505 b , an insulating powder 505 c , a sealant 505 d , and terminals 506 and 507 .

As shown in FIG. 5, the heating element wire 505b is wound in a helical shape (coil shape). Terminals 506, 507 are attached to both ends of the wound heating element wire 505b. The terminals 506 and 507 and the heating element wire 505b are inserted into the sheath tube 505a. The insulating powder 505c is filled in the sheath tube 505a so that the terminals 506, 507 and the heating element wire 505b do not directly contact the sheath tube 505a. By means of this, electrical insulation between the terminal 506 and the terminal 507 is achieved.

Further, it protrudes from one end side of the sheath tube 505 a toward the tip of the terminal 506 , and protrudes from the other end side of the sheath tube 505 a toward the tip of the terminal 507 . Also, one end and the other end of the sheath tube 505a are sealed with a sealant 505d.

In addition, for the sheath pipe 505a, copper, SUS (stainless steel), or other metals having high thermal conductivity are used, for example. In addition, as the insulating powder 505c, for example, magnesium oxide having a good insulating effect is used.

In the effective length L1 of the heating element in FIG. 5, since the heating element wire 505b is wound in a helical shape, the length of the heating element wire 505b can be made longer than that in a straight line. With this, when electric power is applied to the terminals 506 and 507, more heat can be emitted from the heating element wire 505b. As a result, heat is generated more efficiently from the sheathed heating element 505 over the heating element effective length L1 of the sheathed heating element 505 .

On the other hand, in the non-heating portion L2 in FIG. 5 , since the resistance of the terminals 506 and 507 is small, no heat is generated. The outer diameter φh of the sheathed tube 505a of the sheathed heating element 505 in FIG. 5 will be described later.

Next, FIG. 6 is a cross-sectional view showing the internal structure of the sheath-substitute heating element 505 of the fluid heating device 11 a in FIG. 4 .

As shown in FIG. 6 , the heating element effective length L1 of the sheathed heating element 505 is shorter than the length from the washing water inlet 511 to the washing water outlet 512 of the housing body 600 .

In this way, it is possible to avoid the water stagnation part where the heating part is located at both end parts in the box main body part 600 .

Also, the non-heating portion L2 of the sheathed heating element 505 is movably supported in the axial direction by the elastic support members P1 and P2, respectively. Therefore, the temperature of the non-heating portion L2 of the sheathed heating element 505 is not high. As a result, the elastic supporting members P1, P2 are not melted.

Also, being movably supported in the axial direction refers to a state in which the sheathed heating element 505 is movably supported in the axial direction by bending of the elastic supporting members P1 and P2 made of rubber, for example.

Next, Fig. 7 is a cross-sectional view of the fluid heating device 11a shown in Fig. 4 . In FIG. 7, illustration of the spring 515a is omitted.

As shown in FIG. 7 , the washing water inlet 511 of the tank main body 600 is provided at a position offset from the substantially circular center of the cross section of the inner peripheral surface of the tank main body 600 . Therefore, the washing water flows in the circumferential direction F along the inner peripheral surface of the case main body portion 600 and the outer peripheral surface of the sheathed heating element 505a. The flow in the circumferential direction F is in the same direction as the flow in the spiral flow path 510 . In addition, since the flow path 510 is formed with a small cross-sectional area along the outer peripheral surface of the sheathed heating element 505, the velocity of the washing water flowing straight along the sheathed heating element 505 from the washing water inlet 511 to the washing water outlet 512 In comparison, the velocity of the washing water flowing along the spirally formed flow path 510 is high.

Accordingly, since the washing water flows along the outer peripheral surface of the sheathed heating element 505 through the flow path 510, the heat generated by the sheathed heating element 505 can be efficiently transferred to the washing water.

Also, as shown in FIG. 7 , the washing water outlet 512 of the tank main body 600 is provided at an eccentric position deviated from the substantially circular center of the cross section of the inner peripheral surface of the tank main body 600 . Therefore, water can be supplied from the washing water outlet 512 to the pump 13 in FIG. 3 without attenuating the momentum of the washing water passing through the spiral flow path 510 .

Here, the flow path 510 will be described in detail. As described above, the flow path 510 is formed by the outer surface of the sheathed heating element 505 , the spring 515 a, and the inner peripheral surface of the case main body 600 .

Also, the cross-sectional area of the flow path 510 is small with respect to the flow direction. Therefore, as described above, the outflow of the washing water in the flow path 510 becomes faster, so the washing water is stirred in a turbulent flow state, and as a result, the washing water can efficiently absorb heat from the sheathed heating element 505 .

The term "turbulent flow" is a general term for turbulence in which the flow direction of washing water changes, or turbulence in which the velocity of the flow of washing water changes. In addition, turbulent flow may be generated by members other than springs. For example, members such as airfoil members for turbulent washing water flow and various guide members for turbulent washing water flow may be used.

Also, by forming the flow path 510 in a spiral shape, the length of the flow path 510 becomes longer than the linear length from the wash water inlet 511 to the wash water outlet 512 . Also, when the flow path is simply linear and long, the wash water flowing through the flow path tends to become laminar due to the rectification effect. However, since the flow path 510 is formed in a helical shape, the washing water flowing through the flow path 510 is not in a straight line, but forms a flow with a certain deflection, and the flow in a turbulent state can be continued in a fixed manner. As a result, the pressure loss of wash water can be reduced.

Next, FIGS. 8 and 9 are flow velocity distribution diagrams of washing water flowing through the flow path 510 . FIG. 8 shows a case where the wash water flows slowly, and FIG. 9 shows a case where the wash water flows fast.

Usually scale is when the surface temperature of the heating element 505 with a sheath rises, and the washing water flowing through the heating element 505 with a sheath is stagnant, etc., the temperature of the washing water in the boundary layer between the heating element 505 with a sheath and the water Occurs when going high.

As shown in FIG. 8, when the flow of washing water in the flow path 510 surrounded by the main body of the box 600 and the heating element 505 with a sheath is slow, the boundary surface between the washing water and the heating element 505 with a sheath increases, and the The heat generated by the sheathed heating element 505 cannot be efficiently received by the washing water, and the temperature of the sheathed heating element 505 rises. As a result, scale occurs on the surface of the sheathed heating element 505 .

On the other hand, as shown in FIG. 9 , when the flow rate of the washing water in the flow path 510 surrounded by the housing main body 600 and the heating element 505 with a sheath is fast, the distance between the washing water and the heating element 505 with a sheath is high. The boundary surface is reduced, and the heat generated by the sheathed heating element 505 can be efficiently transferred to the washing water, so the surface temperature of the sheathed heating element 505 does not rise excessively. As a result, it is possible to prevent scale from adhering to the surface of the sheathed heating element 505 .

Also, when the flow rate of the washing water in the flow path 510 is fast, even if scale occurs, it moves downstream, so that the scale formed in one place can be prevented from being fixed and growing into large scale. Moreover, the scale itself can be pulverized by the turbulent flow of the washing water. As a result, the occurrence of scale in the fluid heating device 11a can be prevented, so that the life of the fluid heating device 11a itself can be extended.

Next, FIG. 10 is a cross-sectional view showing another example of the fluid heating device.

The fluid device 11b of FIG. 10 has a spring 515b instead of the spring 515a of the fluid heating device 11a shown in FIG.

The spring 515b is provided near the washing water outlet 512 of the tank main body 600 . The length of the spring 515b is less than or equal to half of the length of the spring 515a.

In this case, the washing water supplied to the washing water inlet 511 provided eccentrically in the housing body portion 600 flows helically through the flow path 522 along the outer peripheral surface of the sheathed heating element 505 . The momentum of the spiral flow is attenuated near the center between the wash water inlet 511 and the wash water outlet 512 . Furthermore, when the helical flow is attenuated in the vicinity of the center of the housing main body portion 600, the flow of the washing water is only in the longitudinal direction of the fluid heating device 11b.

In this case, the spiral flow path 523 formed by the outer peripheral surface of the sheathed heating element 505 and the spring 515b generates a spiral flow from the vicinity of the center of the case main body 600 to the downstream side. Therefore, the washing water becomes turbulent again.

In this way, even if the helical water flow is weak near the center of the box main body 600, the helical flow path 523 is formed by the spring 515b, and the turbulent flow of the washing water is regenerated, and at the same time, the flow velocity of the washing water in the flow path 523 increases. . In this case, even in an environment where the temperature of the washing water from the vicinity of the center of the tank main body 600 to the downstream increases and the occurrence of scale increases, the outflow of the washing water can be accelerated and turbulent flow can be generated, so that the occurrence of scale can be prevented. occur.

In addition, compared with the case where the spring 515a is provided on the entire box main body 600 (see FIG. 4 ), since the spring 515b is provided from the center of the box main body 600 to the downstream side, there is no spring on the upstream side of the box main body 600 The cross-sectional area of the flow path 522 is reduced by the spring 515b. Therefore, the pressure loss of the washing water on the upstream side of the tank main body portion 600 is reduced.

Fig. 11 is a cross-sectional view showing still another example of the fluid heating device.

In the fluid heating device 11c of FIG. 11, there are three springs 515c, 515d, and 515e instead of the spring 515a of the fluid heating device 11a shown in FIG. .

The spring 515c is installed near the washing water inlet 511 of the tank main body 600 , the spring 515d is installed near the center of the tank main body 600 , and the spring 515e is installed near the washing water outlet 512 of the tank main body 600 . These springs 515c, 515d, and 515e are intermittently provided at regular intervals.

Therefore, the washing water supplied to the washing water inlet 511 of the housing main body 600 flows through the flow path 527 formed by the outer peripheral surface of the sheathed heating element 505 and the spring 515c. This forms a spiral flow of wash water.

Next, the spiral flow of washing water generated through the flow path 527 maintains the spiral flow in the flow path 528 between the springs 515c and 515d. Next, the wash water passes through the flow path 529 formed by the outer peripheral surface of the sheathed heating element 505 and the spring 515d. With this, the spiral water flow of washing water is generated again.

Next, the spiral flow of washing water generated through the flow path 529 maintains the spiral flow in the flow path 530 between the springs 515d and 515c. Finally, it passes through the flow path 531 formed by the outer peripheral surface of the sheathed heating element 505 and the spring 515e. This regenerates the spiral flow of wash water.

Therefore, even if the helical flow of washing water attenuates between the spring 515c and the spring 515d or between the spring 515d and the spring 515e provided in the tank main body 600, the helical flow can be regenerated by passing through the flow paths 529 and 531. . Therefore, in the vicinity of the downstream portion of the housing main body 600, even in an environment where the temperature of the washing water rises and the generation of scale increases, turbulent flow can be generated while increasing the flow velocity of the washing water. As a result, the occurrence of scale can be prevented.

Also, compared with the case where the spring 515a is provided on the entire box main body portion 600 (see FIG. , 515e, the cross-sectional areas of the flow paths 528, 530 are reduced, and the pressure loss of the washing water can be reduced in a part of the tank main body portion 600.

Fig. 12 is a cross-sectional view showing a state in which the sanitary washing device 100 of Fig. 1 attached to a toilet is used on a human body.

As shown in FIG. 12 , various devices shown in FIG. 3 are arranged in a narrow space in the main body 200 , and therefore, a large space may not be obtained only by the fluid heating device 11 c. Therefore, in order to reduce the size of the fluid heating device 11c, the fluid heating device 11c in which the sheathed heating element 505 is bent in a U shape or a serpentine shape is manufactured.

In this case, no spring is provided on the curved portion of the sheathed heating element 505 of the fluid heating device 11c bent into a U-shape or serpentine shape, and a spring 515c is provided on the linear portion of the sheathed heating element 505 , 515d, 515e, so that a fluid heating device 11c that can be miniaturized can be produced.

The space-saving and downsizing fluid heating device 11 c can be arranged in the main body 200 by the above configuration. As a result, after the nozzle 30 protrudes toward the part to be washed 980 of the human body, the washing water heated by the fluid heating device 11c can be sprayed from the nozzle 30 to the part to be washed 980 . With this, the part to be washed 980 of the human body can be washed.

Also, in the fluid heating devices 11a, 11b, 11c, since the washing liquid flows through the outer surface of the sheathed heating element 505, the heat released from the sheathed heating element 505 can be supplied to the washing water. As a result, a fluid heating device that can be downsized and has high heat exchange efficiency can be realized.

Moreover, since the spring is provided at the portion where the speed of the washing water is low, the speed of the washing water can be increased and the washing water can be made into a turbulent state. As a result, it is possible to prevent deposits such as scale from forming on the surface of the sheathed heating element 505, and to prolong the life of the fluid heating device. In addition, no spring is provided except for the portion where the speed of washing water tends to decrease, so that the pressure loss of the flow path can be prevented compared with the case where springs are provided at all portions. In addition, a fluid heating device can be manufactured by inserting a sheathed heating element into a spring and covering it with the case main body 600 . Therefore, the fluid heating device is easy to manufacture, and the manufacturing cost can be reduced.

In addition, not limited to the fluid heating device 11c, the fluid heating devices 11a, 11b may be bent into a U-shape or a serpentine shape. The seat detection device 620 in the above-mentioned 1st embodiment also can be the device that utilizes the infrared ray method to detect the human body, also can be the device that utilizes the electrostatic capacity of the toilet seat 400 to detect the human body, can be the indoor lighting that is connected with the sanitation washing device 100 again. A detection device that detects the presence or absence of a human body in conjunction.

Second Embodiment

Next, the sanitary washing system of the second embodiment will be described.

The remote control device 300b of the sanitary washing system 100b of the second embodiment is different from the remote control system 300 of the sanitary washing device 100 of the first embodiment in the following points.

Fig. 13 is a schematic diagram showing an example of the remote operation device 300b of the sanitary washing device 100b according to the second embodiment.

As shown in FIG. 13 , the remote operation device 300 b includes a liquid crystal display unit 326 , a plurality of adjustment switches 302 , a hip switch 303 , a stop switch 305 , a bidet switch 306 , a drying switch 307 , and a deodorizing switch 308 .

The flow rate of the washing water is displayed on the liquid crystal display unit 326 . The user can confirm the flow rate of the washing water by viewing the display on the liquid crystal display unit 326 . In addition, the flow rate of the washing water means the flow rate of the washing water sprayed from the nozzle unit 30 in FIG. 1 .

A user can change the flow rate of washing water sprayed from nozzle unit 30 by operating a plurality of adjustment switches 302 . With this, the flow rate of the washing water displayed on the liquid crystal display unit 326 can be increased or decreased.

Next, FIG. 14 shows the structure of the main-body part 200b of the sanitary washing apparatus 100b of 2nd Embodiment.

The difference between the structure of the main body portion 200b in FIG. 14 and the structure of the main body portion 200 in FIG. 3 is that a fluid heating unit 111 is provided instead of the fluid heating device 11a. Hereinafter, the fluid heating unit 111 will be described.

FIG. 15 is a schematic perspective view of the structure of the fluid heating unit 111 .

As shown in FIG. 15 , the fluid heating unit 111 is mainly composed of two fluid heating devices 11 d and a heating device arrangement base 527 .

A fluid heating device mounting part 528 is provided at the center of the heating device arrangement table 527 , and electrical connection parts 529 are provided at both ends of the fluid heating device mounting part 528 . In addition, electrical terminal portions 506 a , 506 b , 507 a , and 507 b are provided on the electrical connection portion 529 .

FIG. 16 is a schematic cross-sectional view showing an example of a fluid heating device 11d of the fluid heating unit 111 in FIG. 15 . The difference between the fluid heating device 11 d shown in FIG. 16 and the fluid heating device 11 a in FIG. 4 lies in the position of the washing water outlet 512 .

As shown in FIG. 16, a wash water inlet 511 is provided at one end of the fluid heating device 11d. The other end of the fluid heating device 11d is provided with a washing water outlet 512 . The washing water outlet 512 of the fluid heating device 11d is provided opposite to the washing water inlet 511 with the sheathed heating element 505 sandwiched therebetween.

In addition, the washing water outlet 512 of the fluid heating device 11d has a shape capable of being connected to the washing water inlet 511 of the fluid heating device 11d.

As shown in FIG. 15, the washing water outlet 512 of one fluid heating device 11d is connected to the washing water inlet 511 of another fluid heating device 11d.

In addition, the terminal 506 with a sheathed heating element of a fluid heating device 11d in the two fluid heating devices 11d is connected to the electrical terminal portion 506a, and the terminal 507 of a fluid heating device 11d with a sheathed heating element is electrically connected to 507a The terminal 506 with a sheathed heating element of the other fluid heating device 11d is connected to the electrical terminal part 506b, and the terminal 507 with a sheathed heating element of the other fluid heating device 11d is connected to the electrical terminal part 507b.

The sheathed heating elements of the two fluid heating devices 11d generate heat by using electric power supplied from the electrical terminal portions 506a, 506b, 507a, and 507b.

The washing water provided to the washing water inlet 511 of a fluid heating device 11d is heated by the generation sheath heating element of a fluid heating device 11d, and passes through the washing water outlet 512 of a fluid heating device 11d and the washing water of another fluid heating device 11d. The water inlet 511 is heated by the sheathed heating element of another fluid heating device 11b. Thereafter, the heated wash water is supplied to the pump 13 from the wash water outlet 512 of the other fluid heating device 11d (refer to FIG. 3 ).

Accordingly, the speed of the washing water flowing through the spiral flow path 510a is higher than the speed of the washing water flowing straight along the sheathed heating element from the washing water inlet 511 to the washing water outlet 512 . As a result, the washing water passes through the flow path 510a and flows in a high-speed turbulent state along the outer peripheral surface of the heating element with a sheath, so the washing water is stirred, and the heat generated on the outer peripheral surface of the heating element with a sheath can be efficiently absorbed. to the entire wash water.

In addition, the two fluid heating devices 11d have a structure that can be easily arranged from the outside. Next, the arrangement method of the fluid heating device 11d will be described.

Fig. 17 is a schematic diagram for explaining how to arrange the fluid heating device 11d.

Fig. 17(a) shows the state before the two fluid heating devices 11d are arranged in the main body 200b, and Fig. 17(b) shows the state after the two fluid heating devices 11d are arranged in the main body 200b.

As shown in FIG. 17( a ), the nozzle unit 30 , the control unit 4 , the switching valve 14 , and a heating device arrangement base 527 are provided in the main body unit 200 b. In addition, a fluid heating unit insertion port 970 is provided on the side surface of the main body portion 200b (see FIG. 1 ). In Figure 17(a), the fluid heating unit 970 is closed.

Next, as shown in FIG. 17(b), the fluid heating unit insertion port 970 provided on the side surface of the main body portion 200b is opened. Then, the two fluid heating devices 11 d are inserted into the main body portion 200 b and arranged on the heating device arrangement table 527 .

In this case, the pipe 202 from the water supply source 201 is connected to the washing water inlet 511 of one fluid heating device 11d, and the washing water outlet 512 of the other fluid heating device 11d is connected to the pipe 203. Furthermore, the terminals 506 and 507 of the two fluid heating devices 11d are respectively connected to electrical terminal portions 506a, 506b, 507a and 507b (see FIG. 5 ). Finally, the fluid heating unit insertion port 970 is closed.

Also, the number of fluid heating devices 11d is not limited to two, and may be increased or decreased. For example, the output of one fluid heating device 11d is substantially 1000 to 1500W. For example, the minimum inflow temperature of the washing water provided to the fluid heating device 11d is substantially 5°C, and when the temperature of the washing water sprayed to the washed part of the human body is substantially 40°C, it is substantially 1000-100°C. The output of 1500W can heat up to substantially 40°C and the maximum wash water volume is substantially 500ml per minute. Therefore, in the case where the maximum amount of wash water needs to be substantially 1000ml per minute, two fluid heating devices 11b are provided. Also, for example, the user operates the adjustment switch 302 shown in FIG. 13 to install three fluid heating devices 11b when the maximum amount of washing water required is substantially 1500 ml per minute. In this case, it is necessary to increase the number of electrical terminal portions 506 a , 506 b , 507 a , and 507 b of the heating device arrangement base 527 .

In addition, in the case of increasing or decreasing the number of fluid heating devices 11d in the above description, the control unit of the main body 200b of the sanitary washing device 100, based on the temperature of the incoming water from the temperature sensor 12a and the flow rate value from the flow sensor 10 , calculate the amount of electric power that should be supplied to the sheathed heating element of each fluid heating device 11d, and supply the calculated electric heat to the sheathed heating element.

With the above configuration, the number of fluid heating devices 11d can be freely changed. As a result, the washing water can be heated to an appropriate temperature even in the case of an excessively severe installation environment and surrounding temperature.

Fig. 18 is a schematic plan view showing another example of a fluid heating unit.

The fluid heating unit 111b shown in FIG. 18 further includes a connection member 552 in the fluid heating unit 111 shown in FIG. 15 .

As shown in Figure 18, the washing water outlet 512 of one fluid heating device 11d is connected to the washing water inlet 511 of the other fluid heating device 11d using a connecting member 552 made of flexible heat-resistant rubber. The number of heating devices 11d. In addition, the arrangement of the plurality of fluid heating devices 11d can be freely designed.

Next, FIG. 19 is a schematic plan view of another example of a fluid heating unit, and FIG. 20 is a schematic cross-sectional view showing an example of a fluid heating device used in the fluid heating unit of FIG. 19 .

The fluid heating unit 111c shown in FIG. 19 replaces the two fluid heating devices 11d of the fluid heating unit 111 shown in FIG. 15 with two fluid heating devices 11e. The difference between the fluid heating device 11 e shown in FIG. 20 and the fluid heating device 11 d in FIG. 16 is that a washing water outlet 512 e is provided instead of the washing water outlet 512 .

As shown in Figure 20, the inner diameter of the washing water outlet 512e of the fluid heating device 11e is larger than the outer diameter of the washing water inlet 511 of the fluid heating device 11e, and may also be larger than the outer diameter of the washing water inlet 511 and the diameter of the O-ring P7. and small. With this, as shown in FIG. 21 , the washing water outlet 521e of one fluid heating device 11e and the washing water inlet 511 of the other fluid heating device 11e can be fitted together by inserting the O-ring P7 to achieve a watertight seal. This makes it easy to increase or decrease the number of fluid heating devices 11e.

Next, FIG. 21 is a schematic sectional view of another example of a fluid heating device.

The cross section of the fluid heating device 11f shown in Fig. 21 and the fluid heating device 11d shown in Fig. 16 is different in the following points.

As shown in FIG. 21 , the washing water inlet 511f is arranged to be inclined outward from one end side of the main body case 600 parallel to the flow direction of the flow path 510 , and the washing water outlet 512f is arranged to be connected to the flow path from the other end side of the main body case 600 . The flow direction of 510 is parallel and slanted outward. With this, it is possible to reduce the pressure loss of the wash water flowing in from the wash water inlet 511f while reducing the pressure loss of the wash water flowing out from the wash water outlet 512 . As a result, even when the water pressure is low, a stable flow of wash water can be provided.

With the above configuration, since the fluid heating unit is provided with a plurality of fluid heating devices, the maximum heating capacity of the fluid heating unit can be increased. As a result, the flow rate of the wash water at a predetermined temperature can be ensured according to the preference of the user or the usage environment.

3rd embodiment

Next, a sanitary washing device according to a third embodiment will be described. The sanitary washing device 100c (not shown) of the third embodiment differs from the sanitary washing device of the first embodiment in that a fluid heating device 11g is provided instead of the fluid heating device 11a.

Fig. 22 is a plan view showing an example of the structure of a fluid heating device 11g according to the third embodiment.

As shown in Figure 22, the fluid heating device 11g mainly consists of a rectangular parallelepiped-shaped box main body 600, linear sheathed heating elements 505x, 505y, springs 515a, 515b (not shown), elastic support members P1, P2 and end faces. Support members 600a, 600b constitute.

On the upper surface of one end side of the tank main body 600 of the fluid heating device 11g, a washing water inlet 511 for receiving washing water supplied from the pipe 202 and a washing water outlet 512 for sending heated washing water to the pump 13 are provided.

In addition, temperature sensor 12a and temperature sensor 12b are provided near washing water outlet 512 . Further, a thermal fuse 12c is provided on the other end side of the sheathed heating element 505x.

End surface support members 600a, 600b are attached to both end surfaces of the box main body portion 600 via elastic support members P1, P2, respectively. This closes the gaps between the openings at both ends of the box main body 600 described below and the sheathed heating elements 505x and 505y.

Next, Fig. 23 is an explanatory diagram for explaining the internal structure of the fluid heating device 11g shown in Fig. 22 . Fig. 23 (a) shows the section of the X-X line of the fluid heating device 11g of Fig. 22, and Fig. 23 (b) shows the section of the Y-Y line of the fluid heating device 11g of Fig. 23 (a), and Fig. 23 (c) 23( a ) shows a cross section along line Z1 - Z1 of the fluid heating device 11 g in FIG. 23( a ), and FIG. 23( d ) shows a cross section along line Z2 - Z2 of the fluid heating device 11 g in FIG. 23( a ). In addition, in Fig.23 (c), (d), illustration of the spring 515a, 515b is abbreviate|omitted.

The linear sheathed heating elements 505x and 505y are arranged approximately in parallel to penetrate through the inside of the box main body portion 600 . A spring 515a is wound spirally around the outer peripheral surface of the sheathed heating element 505x, and a spring 515b is wound spirally around the outer peripheral surface of the sheathed heating element 505y.

The flow path 510 a is formed by the outer peripheral surface of the sheathed heating element 505 x , the spring 515 a , and the inner peripheral surface of the case main body 600 . The flow path 510 a is formed in a helical shape with the longitudinal direction of the case main body 600 as an axis. Similarly, the flow path 510 b is formed by the outer peripheral surface of the sheathed heating element 505 y , the spring 515 b , and the inner peripheral surface of the case main body 600 . The flow path 510b is formed in a spiral shape with the longitudinal direction of the case main body 600 as an axis.

O-rings P3 and P4 are respectively provided between the two end faces of the case main body 600 and the elastic support members P1 and P2, and O-rings P5 and P6 are provided between the end face support members 600a and 600b and the spring support members P1 and P2. . This prevents washing water from flowing out from the junctions between both end surfaces of the housing main body 600 and the end surface support members 600a, 600b.

Further, the vicinities of both end portions of the outer peripheral surfaces of the sheathed heating elements 505x, 505y are supported so as to be movable in the axial direction by elastic support members P1, P2, respectively. Here, the state of being movably supported in the axial direction includes, for example, a state in which the elastic support members P1 and P2 made of rubber are used to move the sheathed heating elements 505x and 505y in the axial direction by bending, or they are made of rubber. The sliding of the surfaces of the elastic supporting members P1, P2 and the surfaces of the sheathed heating elements 505x, 505y movably supports the state of the sheathed heating elements 505x, 505y in the axial direction. The vicinity of both ends of the outer peripheral surface of the sheathed heating element 505x, 505y is not a part corresponding to the nickel-chromium wire used as the heating element, but a part corresponding to the metal terminal connected to the nickel-chromium wire (non-heating part L2: refer to Figure 5). Therefore, the temperatures near both ends of the sheathed heating elements 505x and 505y are not high. Therefore, the elastic supporting members P1, P2 do not melt.

The control unit 4 performs feedback control on the temperatures of the sheathed heating elements 505x and 505y of the fluid heating device 11 based on the temperature measurement value provided by the temperature sensor 12a. The detection part of the temperature sensor 12b is inserted in the cylindrical space 510b. The control unit 4 controls the power supply and cutoff of the sheathed heating elements 505x and 505y of the fluid heating device 11 based on the temperature exceeding signal provided by the temperature sensor 12b. The thermal fuse 12c cuts off the power supply to the sheathed heating elements 505x and 505y when the temperature of the sheathed heating element 505y exceeds a predetermined temperature. Since the temperature sensor 12a is provided near the washing water outlet 512, the temperature of the washing water supplied to the rear nozzle 1 can be accurately controlled. It is also possible to prevent abnormal heating of the sheathed heating elements 505x and 505y, thereby improving safety performance.

Also, the temperature sensor 12b is provided near the wash water outlet 512 like the temperature sensor 12a, so the control unit 4 can accurately control the temperature of the wash water supplied to the rear nozzle 1.

The washing water is supplied to the spiral flow path 510a formed around the sheathed heating element 505x from the washing water inlet 511 provided at one end side of the fluid heating device 11g in FIG. 23(c). Here, the washing water inlet 511 is provided at an eccentric position deviated from the axis of the flow path 510a. With this, the washing water flowing through the flow path 510a flows from the flow path 510c of the fluid heating device 11g in FIG. supply. Then, the washing water flows out from the washing water outlet 512 provided on the one end side of the fluid heating device 11g in FIG. 23(c).

Therefore, the speed ratio of the washing water flowing through the spirally formed flow paths 510a, 510b is along the straight line from the wash water inlet 511 to the flow path 510c and from the flow path 510c to the wash water outlet 512 along the sheathed heating elements 505x, 505y. The speed of the flowing wash water is high.

As a result, the washing water flows in a turbulent state at a high speed along the outer peripheral surfaces of the heating elements 505x, 505y with sheaths through the passages 510a, 510b, so the washing water is stirred, and the heating elements 505a, 505b with sheaths are stirred. All the heat generated on the outer peripheral surface of the washing machine can be efficiently transferred to the washing water.

In addition, even when the sheathed heating elements 505x and 505y thermally expand or contract in the axial direction, deformation due to thermal expansion or thermal contraction can be substantially limited in the axial direction. Therefore, the deformation of the sheathed heating elements 505x, 505y caused by thermal expansion or thermal contraction can be effectively absorbed by the sliding of both end portions with respect to the elastic supporting member. With this, since no stress acts on the sheathed heating elements 505x, 505y and the rectangular parallelepiped box main body 600, damage and deformation of the sheathed heating elements 505x, 505y and the box main body 600 can be prevented.

Also, since the outer peripheral portions of the heating elements 505x and 505y with a sheath are not in contact with the box body 600 in the shape of a rectangular parallelepiped, no stress acts on the heating elements 505x and 505y with a sheath even if they thermally expand or contract in the radial direction. With respect to the heating elements 505x, 505y with a sheath, and the main body portion 600 of the case, damage and deformation of the heating elements 505x, 505y with a sheath, and the main body portion 600 of the case can be prevented.

Also, in this embodiment, the controller 4 controls the temperature of the sheathed heating elements 505x, 505y of the fluid heating device 11 by using feedback control, but it is not limited to this, and the temperature of the sheathed heating elements 505y may be controlled by feedforward control. The temperature of the heating element 505x, 505y is controlled, and it is also possible to control the heating element 505x, 505y with a sheath by feedforward control when the temperature rises, and to control the heating element 505x, 505y with a sheath by feedback control in normal conditions. composite control.

In addition, the energization amount of the plurality of sheathed heating elements 505x and 505y may be controlled by using a triac. For example, duty ratios may be set corresponding to the plurality of sheathed heating elements 505x and 505y, and alternate energization may be performed according to the duty ratio control. As a result, the occurrence of flicker noise and the like can be suppressed.

Also, in the present embodiment, two cheap and not easily damaged linear band sheathed heating elements 505x, 505y are used, but it is not limited thereto, and any other number of linear banded sheathed heating elements 505x can also be used. , 505y. In addition, in this embodiment, cylindrical sheathed heating elements 505x and 505y are used, but the present invention is not limited thereto, and triangular, square, or polygonal sheathed heating elements may also be used.

Also, in this embodiment, the sheathed heating elements 505x and 505y are used, but the present invention is not limited thereto, and ceramic heating elements having the same cylindrical shape as the sheathed heating elements 505x and 505y may be used.

Fig. 24 below shows the heating characteristics of the fluid heating device 11g according to the third embodiment. 24, the vertical axis represents the hot water supply flow rate Q (ml/min) of washing water, and the horizontal axis represents input power (watt).

Also, the white triangles in FIG. 24 indicate the heating characteristics of the wash water when the wash water has an inlet temperature of 30° C. and the wash water has risen to substantially 40° C., and the black squares indicate that the wash water has an inlet temperature of 25° C. The heating characteristics of the washing water when the temperature of the washing water is raised to substantially 40°C, the black triangles indicate the heating characteristics of the washing water when the washing water inlet temperature is 20°C and the temperature of the washing water is raised to substantially 40°C, the white four The squares represent the heating characteristics of the wash water when the wash water with an inlet water temperature of 15°C is heated to substantially 40°C, and the white circles represent the heating characteristics of the wash water with an inlet water temperature of 10°C raised to substantially 40°C. The heating characteristics of the washing water, the black dots indicate the heating characteristics of the washing water when the temperature of the incoming water is 5°C and the temperature of the washing water is raised to substantially 40°C.

Usually, the washing water inlet temperature in winter is, for example, 5°C. In addition, the amount of washing water required for the user to feel sufficiently cleansed is substantially 1000 ml. In this case, the maximum input power when raising the temperature of substantially 1000 ml of washing water to substantially 40° C. in the heating characteristics (inlet water temperature 5° C.) indicated by the dots in FIG. 24 is substantially 2500W.

Moreover, the inflow temperature of the wash water in the middle period or summer is substantially 20 degreeC, for example. Also, the amount of washing water required for the user to feel sufficiently cleansed is substantially 1000 ml as in winter. In this case, the maximum input power required to raise the temperature of substantially 1,000 ml of wash water to substantially 40° C. is 1,500 W in the heating characteristics indicated by black triangles in FIG. 24 (inlet water temperature 20° C.). .

According to the above situation, the total maximum input power of the heating elements with sheaths 505x and 505y is set to 2500W. As a result, even in winter, mid-term, and summer, when the inlet water temperature is 5°C or 20°C, 1000ml of washing water at 40°C suitable for body washing can be produced per minute. As a result, even if the user continues to use the sanitary washing device 100, the washing water at a constant temperature of 40° C. can be sprayed, and the hot water can be prevented from running out.

Next, Fig. 25 is a characteristic diagram showing the temperature rise of the washing water in the fluid heating device 11g according to the third embodiment, and Fig. 26 is a characteristic diagram showing the temperature control response of the washing water in the fluid heating device 11g according to the third embodiment.

The vertical axis shown in FIG. 25 represents the washing water temperature (° C.), and the horizontal axis represents the response time (seconds). In FIG. 26 , the vertical axis represents the target temperature Tq (° C.), and the horizontal axis represents the response time (seconds).

In Fig. 25 and Fig. 26, the dotted line T1 represents the characteristic of the fluid heating device having the heating characteristic of 20 watts per square centimeter (the power number per square centimeter is called power density), and the dotted line T2 represents the characteristic of the fluid heating device having a power density of 30 (W/cm ² ) The characteristics of the fluid heating device with the heating characteristics, the solid line T3 represents the characteristics of the fluid heating device with a power density of 38 (W/cm ² ), and the solid line T4 represents the characteristics of a fluid heating device with a power density of 50 (W/cm 2 ). ² ) The heating characteristics of the fluid heating device. The detailed definition of power density will be described below.

As shown in FIG. 25, as the power density of the fluid heating device increases, the temperature of the washing water can be raised in a short time. For example, as shown by the dotted line T1, a fluid heating device having a heating characteristic with a power density of 20 (W/cm ² ) can raise the water temperature by up to substantially 8K within 1 second, and as shown by the dotted line T2, has a power density of A fluid heating device with a heating characteristic of 30 (W/cm ² ) can increase the water temperature by substantially 10K at most in one second, and has a heating characteristic of a power density of 38 (W/cm ² ), as shown by the solid line T3 The fluid heating device can increase the water temperature by substantially 12K in 1 second. As shown by the solid line T4, the fluid heating device having a heating characteristic with a power density of 50 (W/cm ² ) can raise the water temperature in 1 second. The water temperature rises substantially 14K at most.

Also, as shown by the dotted line T1 in FIG. 26 , overshooting and undershooting occur in the temperature control response of the wash water of the fluid heating device having a heating characteristic of power density of 20 (W/cm ² ). The temperature control response of the washing water indicated by the dotted line T1 indicates that the thermal response of the sheathed heating element is sluggish. The reason for this is considered to be that the heat capacity of the sheath tube 505a and the insulating powder 505c is relatively large with respect to the amount of heat generated by the heating element wire 505b of the sheathed heating elements 505x and 505y. As a result, a fluid heating device with a heating characteristic of a power density of 20W is not easy to heat and cool, and therefore is not suitable for stable heating of washing water with a fluctuation range of about 1°C or less.

On the other hand, no overshoot or undershoot occurs in the temperature control response of the wash water of the fluid heating device having the heating characteristic of the power density of 30 (W/cm ² ), as shown by the dotted line T2. The temperature control response of the wash water shown by the dotted line T2 shows that the thermal response of the sheathed heating element is fast. As a result, a fluid heating device having a heating characteristic of a power density of 30 (W/cm ² ) is suitable for stable heating of wash water with a fluctuation range of about 1°C. Therefore, a device capable of quickly controlling the temperature of wash water desired by users is a fluid heating device having a heating characteristic with a power density of 30 (W/cm ² ).

Also, it is possible to manufacture a fluid heating device having a heating characteristic of a power density of 50 (W/cm ² ), but the results of the durability life test show that a fluid having a heating characteristic of a power density of 50 (W/cm ² ) It is not easy for the heating device to secure the target service life of substantially 10 years, and the heating element wire 505a of the sheathed heating elements 505x and 505y may be blown in a short period of time.

Here, the power density will be described using FIG. 5 . The power density is the value obtained by dividing the power applied between the terminals 506 and 507 of the heating element with a sheath 505 by the surface area of the sheath tube 505a on the effective length L1 of the heating element, that is, the unit surface area on the effective length L1 of the heating element power. For example, when the sheath tube 505a is cylindrical, the power density (W/cm ² ) is the power (W) applied between the terminals 506, 507 divided by the diameter φh (cm) of the sheath tube 505a, the heating element The quotient obtained by the product of the effective length L1 (cm) and π.

In addition, the user can change the temperature of the washing water, the flow rate of the washing water, or the temperature of the incoming water by operating the remote operation device 300b. In this case, the control unit 4 automatically adjusts the power applied to the sheathed heating elements 505x and 505y. As a result, the power density of the sheathed heating elements 505x and 505y also increases and decreases. Therefore, the power density in the above description means the power density when the power applied to the sheathed heating elements 505x and 505y is at its maximum in order to set the temperature of the washing water at the set temperature.

In addition, the sheathed heating elements 505x and 505y with a power density of 30 (W/cm ² ) are much higher than the allowable power density of the usual sheathed heating elements of about 4 to 8 (W/cm ² ). Several times the allowable power density of each company. The allowable power density is determined from the perspective of the life of the heating element.

In this embodiment, by appropriately setting conditions such as the thickness of the heating element wires of the sheathed heating elements 505x and 505y, the winding diameter and the winding pitch of the spiral heating element wires, it is possible to develop The average temperature per unit length or unit volume of the body line is suppressed relatively low, but the sheathed heating elements 505x, 505y have a large overall calorific value, and the fluid heating devices 11a, 11b, which have long life, small heat capacity, and excellent thermal response performance are produced. 11c, 11d.

Therefore, the speed of the washing water flowing through the spiral flow path 510 is higher than that of the washing water flowing straight along the sheathed heating element from the washing water inlet 511 to the washing water outlet 512 . As a result, the washing water flows in a high-speed turbulent state along the peripheral surface of the sheathed heating element through the flow path 510, so the washing water can be stirred, and the heat generated on the outer peripheral surface of the sheathed heating element can be efficiently absorbed. Pass to the whole wash water.

In addition, in each of the above-mentioned embodiments, a sheathed heating element was used as the heating element, but the present invention is not limited to this, and a ceramic heating element may also be used, for example. Also, the number of sheathed heating elements is not limited to two, and any number can be used. In addition, although the shape of the heating element with a sheath is cylindrical or cylindrical, it is not limited thereto, and other arbitrary shapes such as a triangular prism or a quadrangular prism may also be used.

Fourth Embodiment

Next, a sanitary washing device according to a fourth embodiment will be described. The sanitary washing device of the fourth embodiment differs from the sanitary washing device 100 of the first embodiment in that a fluid heating device 11h is provided instead of the fluid heating device 11a.

Fig. 27 is a schematic cross-sectional view of a fluid heating device 11h according to the fourth embodiment.

A fluid heating device 11h shown in FIG. 27 includes a heat sensitive plate P8 and a thermistor 518 instead of the elastic supporting member P2 of the fluid heating device 11a shown in FIG. 4 .

A thermistor 518 is installed on the thermal plate P8. The heat sensitive plate P8 is made of copper with good thermal conductivity. The thermistor 518 can accurately detect the temperature of the non-heating portion L2 of the sheathed heating element 505 via the heat sensitive plate P8.

First, wash water is supplied to the wash water inlet 511 of the fluid heating device 11h. The control unit applies electric power to the terminals 506 and 507 of the sheathed heating element 505 . With this, the heat generated by the sheathed heating element 505 is supplied to the wash water flowing through the flow path 510 formed by the sheathed heating element 505, the spring 515a, and the tank main body 600a. The heated wash water flows out from the wash water outlet 512 .

In this case, the temperature of the wash water flowing out from the wash water outlet 512 can be estimated from the temperature of the non-heating portion L2 of the sheathed heating element 505 . Accordingly, the power applied to the sheathed heating element 505 is adjusted based on the temperature detected by the thermistor 518 . With this, even if the flow rate of the washing water flowing through 510 fluctuates, washing water at a constant temperature can flow out from washing water outlet 512 .

Moreover, even if the flow rate of the washing water decreases, the control unit 4 can adjust the power applied to the heating element 505 with the sheath according to the temperature rise gradient detected by the thermistor 518, so that the belt protection can be prevented. Since the temperature of the jacket heating element 505 rises too much, it is possible to prevent failure of the fluid washing device 11h itself. As a result, safety can be improved.

In addition, even if the flow rate of the washing water decreases and stagnation of the washing water occurs, the temperature of the thermistor 518 can be prevented from rising, so that scale does not occur on the surface of the sheathed heating element 505 .

Also, the fluid heating device 11h shown in FIG. 27 is an instantaneous fluid heating device capable of raising a required amount of washing water to a predetermined temperature in a short period of time. Compared with the traditional fluid heating device, the cost can be reduced and the power consumption can be reduced.

As described above, in the fourth embodiment, the thermistor 518 is brought into contact with the non-heating portion L2 (see FIG. 5 ) of the sheathed heating element 505 via the heat-sensitive plate P8. Therefore, the heat-sensitive plate P8 does not affect the washing water. The flow and assembly of the fluid heating device 11h. Also, by providing the heat sensitive plate P8 and the thermistor 518, the temperature of the sheathed heating element can be accurately detected, the temperature of the washing water can be controlled, and countermeasures can be taken against empty heating.

Also, the velocity of the wash water flowing through the spiral flow path 510 of the fluid heating device 11h is higher than the velocity of the wash water flowing straight along the sheathed heating element 505 from the wash water inlet 511 to the wash water outlet 512 . As a result, the washing water flows in a high-speed turbulent state along the outer peripheral surface of the heating element 505 with the sheath through the flow path 510, so the washing water is stirred, and the heat generated on the outer peripheral surface of the heating element 505 with the sheathing can be high. Efficiently transfer to the whole wash water.

In addition, even when the cross-sectional shape of the fluid heating device 11h is a curved surface such as a circle or an ellipse, it is easy to attach the thermistor 518 by fixing it to the heat-sensitive plate P8. As a result, the heating temperature of the fluid heating device 11h can be accurately detected.

In addition, in the fluid heating device 11h, the heat-sensitive plate P8 is made of copper, and since the heat-generating element 505 with a sheath is also made of the same copper material, brazing is easy.

The heat-sensitive plate P8 made of copper has particularly excellent thermal conductivity and long-term corrosion resistance, so it can quickly and accurately transmit the temperature of the sheathed heating element 505 to the thermistor 518 for a long time.

Also, the material of the heat-sensitive plate P8 is not limited to copper, and when the material of the sheath tube 505a of the heating element 505 with a sheath is changed, the material of the heat-sensitive plate P8 can also be changed corresponding to the material of the sheath tube 505. material for easier brazing. For example, when stainless steel is used to form the sheath pipe 505a, stainless steel may be used as the material of the heat sensitive plate P8.

Fig. 28 is a schematic cross-sectional view showing another example of a fluid heating device.

The difference in the structure of the fluid heating device 11k of FIG. 28 and the fluid heating device 11h of FIG. 27 is that the end surface support member 600b is not provided.

The heat sensitive plate P8 is brazed to the non-heating portion L2 of the sheathed heating element 505 and one end of the box main body portion 600 . This can prevent washing water from leaking from the joint portion between the end surface of the box main body portion 600 and the heat-sensitive plate P8. As a result, in the fluid heating device 11k, the end surface supporting member 600b is not required, and therefore the number of parts can be reduced, contributing to cost reduction and assembly.

Fig. 29 is a schematic sectional view showing another example of the fluid heating device, and Fig. 30 is a side view of the fluid heating device of Fig. 29 .

The difference between the fluid heating device 11m shown in FIG. 29 and the fluid heating device 11h in FIG. 27 is that a heating element 505m with a sheath with a triangular cross-sectional shape is provided instead of a heating element 505 with a cylindrical sheath to provide an elastic support. The member P2 replaces the heat sensitive plate P8.

As shown in FIGS. 29 and 30, instead of using the heat sensitive plate P8, a thermistor 518 is attached to one surface of the terminal 507 of the non-heating portion L2 of the heating element 505m having a sheath having a triangular cross-sectional shape. As a result, the number of components can be reduced, the cost can be reduced, and assembly can be facilitated, while accurately detecting the heating temperature of the fluid heating device 11m.

Fifth Embodiment

Next, a sanitary washing device according to a fifth embodiment will be described. The sanitary washing device of the fifth embodiment differs from the sanitary washing device 100 of the first embodiment in that a fluid heating device 11p is provided instead of the fluid heating device 11a.

Fig. 31 is a schematic cross-sectional view showing a fluid heating device 11p according to the fifth embodiment.

The fluid heating device 11p has a heat transfer plate P10 and a triac 523 instead of the elastic supporting member P1 of the fluid heating device 11a shown in FIG. The elastic supporting member P2 further includes a temperature sensor 12 b and a thermistor 518 .

The heat transfer plate P10 is set so that it can directly contact the washing water provided to the washing water inlet 511 in FIG. 31. The heat transfer plate P10 is made of copper with high thermal conductivity. The control element is the triac 523 which is also a heat-generating electronic part.

The heat sensitive plate P8 is provided so as to be in contact with the non-heating portion L2 of the sheathed heating element 505 . The heat sensitive plate P8 is made of copper with good thermal conductivity. The heat sensitive plate P8 is provided with a thermal fuse 12c that cuts off power supply to terminals 506 and 507 of the sheathed heating element 505 when the sheathed heating element 505 is heated to an abnormal temperature.

Further, a thermistor 518 for detecting the temperature of the heated washing water is attached to the washing water outlet 512 of the fluid heating device 11p. The thermistor 518 is connected to the control unit 4 . Also, in order to prevent the abnormal temperature rise of the sheathed heating element 505 of the fluid heating device 11p when an electrical failure occurs in the thermistor 518, an electrical contact can be mechanically connected at a predetermined temperature near the washing water outlet 512. And the open temperature switch, ie the temperature sensor 12b.

Next, the operation of the fluid heating device 11p will be described. When washing water is supplied from washing water inlet 511 , control unit 4 applies power to terminals 506 and 507 of sheathed heating element 505 . With this, the heat of the sheathed heating element 505 is supplied to the wash water passing through the flow path 510 , and the wash water heated to a predetermined temperature flows out from the wash water outlet 512 . In this case, the temperature of the wash water flowing out from the wash water outlet 512 is detected by the thermistor 518 . Thermistor 518 sends the detected temperature of the washing water to control unit 4 as a signal. The control unit 4 receives the signal from the thermistor 518, and supplies power to the sheathed heating element 505 through the triac 523, so that the temperature of the washing water flowing out from the washing water outlet 512 reaches a specified temperature.

As described above, when power is applied to the terminals 506 and 507 of the sheathed heating element 505, the triac 523, which is a power control element and a heat-generating electronic component, generates heat. Therefore, the temperature rise of the triac 523 itself can be suppressed by bringing the heat-sensitive plate P8 to which the triac 523 is fixed in contact with the low-temperature wash water flowing through the wash water inlet 511 .

In this way, in the fluid heating device 11p, the water cooling effect of the triac 523 which is a heat-generating electronic component can be ensured, so that failure of the heat-generating electronic component mounted on the heat transfer plate P10 can be prevented. In addition, the heat transfer plate P10 also functions as a washing water leakage prevention member and a heat radiation member of the triac 523 .

Also, the velocity of the washing water flowing through the spiral flow path 510 of the fluid heating device 11p is higher than the velocity of the washing water flowing straight along the sheathed heating element 505 from the washing water inlet 511 to the washing water outlet 512 . As a result, the washing water passes through the flow path 510 and forms a high-speed turbulent flow along the outer peripheral surface of the heating element 505 with a sheath, so the washing water is stirred, and the heat generated on the outer peripheral surface of the heating element 505 with a sheath can be reduced to a high level. Efficiency is transferred to the overall wash water.

In addition, the heat transfer plate P10 fixing the triac element 523 is arranged near the washing water inlet 511 of the fluid heating device 11p, and by means of this, the temperature of the heat transfer plate P10 is lower than that before being heated by the heating element 505 with a sheath. In contact with the washing water, the heat of the triac 523 is efficiently transferred to the washing water through the heat transfer plate P10.

In addition, the control unit 4 controls the power supply to the terminals 506 and 507 of the sheathed heating element 505 based on the signal detected by the thermistor 518, so that even if the flow rate of the washing water flowing through the fluid heating device 11p fluctuates, it can Wash water at a predetermined temperature is sent out from the wash water outlet 512 . As described above, since the fluid heating device 11p shown in FIG. 31 is an instant heating type fluid heating device, it is possible to reduce the cost and power consumption compared with the hot water storage type fluid heating device.

Also, even if the thermistor 518 has an electrical failure, the temperature sensor 12b that can be mechanically turned on and off at a predetermined temperature is provided near the washing water outlet 512 of the fluid heating device 11p, so even if the thermistor 518 fails In the case of an electrical failure at 518, the electrical contact of the temperature sensor 12b can also be disconnected mechanically when the heating temperature of the washing water is higher than the specified temperature, and the power supply to the terminals 506, 507 of the band sheath heating element 505 can be disconnected. .

Also, since the temperature fuse 12c is provided on the heat sensitive plate P8 on the side of the washing water outlet 512 of the fluid heating device 11p, even if the thermistor 518 and the temperature sensor 12b fail, the washing water can When the temperature is higher than the predetermined temperature, the power supply to the terminals 506 and 507 of the sheathed heating element 505 is cut off by the thermal fuse 12c.

The fluid heating device 11p can release the heat of the triac 523 into the washing water through the heat transfer plate P10, and at the same time, the temperature fuse 12c can detect the abnormal heating of the sheathed heating element 505 and the washing water through the heat sensitive plate P8, Therefore, failure of the triac 523 can be reliably prevented, and at the same time, when the fluid heating device 11p is abnormally heated, the power supply to the terminals 506 and 507 of the sheathed heating element 505 can be cut off to ensure safety.

Moreover, although the heat sensitive plate P8 and the heat transfer plate P10 of the fluid heating apparatus 11p are comprised with copper, they are not limited to this, You may comprise with any other metal. As a result, it is possible to secure the heat conduction performance required for heat dissipation of the triac 523 and the mechanical strength required for preventing leakage of washing water.

Also, when the heat sensitive plate P8 and the heat transfer plate P10 of the fluid heating device 11p are made of copper, corrosion resistance and particularly excellent thermal conductivity for long-term use can be obtained.

By making the heat sensitive plate P8 and the heat transfer plate P10 of the fluid heating device 11p substantially L-shaped, the fluid heating device 11p does not protrude too much outward, and the size of the fluid heating device 11p can be reduced.

Furthermore, it is possible to realize the temperature rise washing device 110 using the fluid heating devices 11a to 11p that can be downsized and have high heat exchange efficiency. With this, the washing water at a temperature comfortable to the human body can be sprayed.

Also, in the first to fifth embodiments, the heating element 505 with a sheath is used to heat the washing water. However, it is not limited to the heating element with a sheath, and any other heating device, such as a ceramic heating element, can also be used. .

In the above first to fifth embodiments, the box main body 600 corresponds to the box, the sheathed heating element 505 corresponds to the heating element, and the flow paths 510, 522, 523, 524, 527, 528, 529, 530, 531 corresponds to the flow path, the springs 515a to 515e correspond to the helical springs, the turbulent flow generating mechanism, and the helical member, the washing water inlet 511 corresponds to the fluid inlet and the cylindrical fluid inlet, and the washing water outlet 512 corresponds to the fluid outlet and the cylindrical fluid inlet. The thermistor 518 is equivalent to a temperature detector, the control unit 4 is equivalent to a control device, the heat sensitive plate P8 is equivalent to a heat sensitive plate, the heat transfer plate P10 is equivalent to a heat transfer member, and the triac 523 is equivalent to As a heat-generating electronic component, the nozzle unit 30 corresponds to a discharge device.

Embodiment 6

Next, a clothes washing device including a fluid heating device according to a sixth embodiment of the present invention will be described.

Fig. 32 is a schematic longitudinal sectional view of an example of a clothes washing machine using a fluid heating device according to an embodiment of the present invention. Also, the fluid heating device used in the clothes washing device has the same structure as the fluid heating device 11a in FIG. 4 .

First, the driving system of the clothes washing device 800 will be briefly described.

The washing tank 810 is fixed in the clothes washing device 800 . An inner tank 808 is provided inside the washing tank 810 , and the inner tank 808 is provided so as to be rotatable about a vertical direction in the washing tank 810 . Moreover, the stirring blade 809 is provided in the lower part of the inner tank 808. As shown in FIG. The stirring blade 809 is provided so as to be rotatable about a vertical direction independently of the inner tank 808 .

A motor 811 is provided below the washing tub 810 . The shaft of the motor 811 is connected to a bearing 812 through a rotation transmission mechanism. The bearing 812 can selectively rotatably connect either one or both of the stirring blade 809 and the inner tank 808 .

Accordingly, the motor 811 rotates according to the instruction of the control unit 825 , thereby, the bearing 812 rotates about the vertical direction, and either or both of the stirring blade 809 and the inner tank 808 connected to the bearing 812 rotate.

Next, the path of washing water supplied into washing tub 810 of clothes washing apparatus 800 will be described. The washing water path of the clothes washing device 800 is mainly composed of a main water path 814 , a bypass path 815 , a suction path 822 , a hot water path 819 , and a detergent hot water path 821 .

The washing water supplied from the water supply source flows through the main water channel 814 from the water supply port 813 and is supplied to the washing tub 810 . A switching valve 816 and a detergent inlet 820 are inserted into the main waterway 814 . One end of the bypass path 815 is connected to the switching valve 816 .

One end of the water suction path 822 is connected to the lower part of the washing tank 810 . A water inlet switching valve 823 , a pump 824 , a fluid heating device 11 a and a water temperature detector 836 are sequentially inserted into the water suction path 822 . The other end of the water suction path 822 is connected to the switching valve 818 .

The other end of the bypass path 815 is connected to the water inlet switching valve 823 of the water suction path 822 . The switching valve 818 is connected with a hot water circuit 819 and a detergent hot water circuit 821 .

Next, FIG. 33 is a schematic cross-sectional view of the clothes washing apparatus 800 shown in FIG. 32 .

As shown in FIG. 33 , the washing tank 810 and the inner tank 808 of the clothes washing device 800 are provided at the center of the clothes washing device 800 . On the other hand, the fluid heating device 11 a and the bypass path 815 are provided at a corner portion 835 of the clothes washing device 800 .

As shown in FIG. 32 , since the fluid heating device 11 a has a vertically long shape, the fluid heating device 11 a can be arranged vertically at the corner 835 of the clothes washing device 800 . With this, downsizing of the clothes washing device 800 can be achieved.

Also, the velocity of the washing water flowing through the spiral flow path 510 of the fluid heating device 11a is higher than the velocity of the washing water flowing straight along the sheathed heating element 505 from the washing water inlet 511 to the washing water outlet 512 . As a result, the washing water flows in a high-speed turbulent state along the outer peripheral surface of the heating element 505 with a sheath in the flow path 510, so the washing water is stirred, and the heat generated on the outer peripheral surface of the heating element 505 with a sheath can be Efficiently transfer to the whole washing water. Therefore, it is possible to supply washing water at a temperature at which the detergent can be dissolved.

Next, specific operations of clothes washing device 800 in the case of washing with hot water will be described.

FIG. 3 is a schematic diagram showing the path of the washing water when the washing water supplied from the water supply port 813 is heated by the fluid heating device 11 a and then supplied to the washing tub 810 . The path of the wash water is indicated by a thick line.

The control unit 825 issues instructions to the switching valve 816 , the switching valve 818 , and the water inlet switching valve 813 . The switching valve 816 switches the valve of the switching valve 816 according to an instruction from the control unit 825 to allow washing water to flow into the bypass path 815 . The water inlet switching valve 823 switches the valve of the water inlet switching valve 823 according to the instruction from the control unit 825 , so that the washing water flows into the water suction path 822 from the bypass path 815 . The switching valve 818 switches the valve of the switching valve 828 according to the instruction from the control unit 825 , so that the washing water flows from the water suction path 822 to the hot water path 819 .

Also, the control unit 825 instructs the pump 824 to operate. The washing water is sucked up by the action of the pump 824 . The control unit 825 applies electric power to the sheathed heating element 505 of the fluid heating device 11a.

Accordingly, the washing water from the water supply port 813 flows through the bypass path 815 , the suction path 822 , the pump 824 , and the fluid heating device 11 a in order, and is supplied to the washing tub 810 . In this case, the wash water supplied from the water supply port 813 is heated to an optimum temperature by the fluid heating device 11a.

Next, specific operations of clothes washing apparatus 800 in the case where the washing water once supplied into washing tub 810 is heated and supplied into washing tub 810 will be described.

FIG. 35 shows the path of the washing water in the case where the washing water once supplied to washing tub 810 is heated and then supplied to washing tub 810 . The path of the wash water is indicated by a thick line.

The control unit 825 provides instructions to the switching valve 818 and the water inlet switching valve 823 . The water inlet switching valve 823 switches the valve of the water inlet switching valve 823 according to the instruction from the control unit 825 , so that the washing water flows from the washing tank 810 to the water suction path 822 . The switching valve 818 switches the valve of the switching valve 818 according to an instruction from the control unit 825 , so that washing water flows from the water suction path 822 into the hot water path 819 .

Also, the control unit instructs the pump 824 to operate. The washing water is sucked up by the action of the pump 824 . The control unit 825 applies electric power to the sheathed heating element 505 of the fluid heating device 11a.

With this, the washing water sucked out from the washing tank 810 flows through the water suction path 822 , the pump 824 , and the fluid heating device 11 a sequentially, and is supplied to the washing tank 810 again. In this case, the wash water is heated to an optimum temperature by the fluid heating device 11a.

Next, specific operations of clothes washing apparatus 800 in the case of supplying hot water containing detergent to washing tub 810 will be described.

FIG. 36 shows the path of washing water when hot water with detergent added is supplied to washing tub 810 . Paths with thick lines are indicated with thick lines.

The control unit 825 issues instructions to the switching valve 816 , the switching valve 818 , and the water inlet switching valve 823 . The switching valve 816 switches the valve of the switching valve 816 according to an instruction from the control unit 825 so that washing water flows into the bypass path 815 . The water inlet switching valve 823 switches the valve of the water inlet switching valve 823 according to the instruction from the control unit 825 , so that the washing water flows into the water suction path 822 from the bypass path 815 . The switching valve 818 switches the valve of the switching valve 818 according to an instruction from the control unit 825 , so that washing water flows from the water suction path 822 into the detergent hot water path 821 .

Also, the control unit 825 issues an operation instruction to the pump 824 . The washing water is sucked up by the action of the pump 824 . The control unit 825 applies electric power to the sheathed heating element 505 of the fluid heating device 11a.

Thereby, the washing water supplied from the water supply port 813 flows sequentially through the water suction path 822 , the pump 824 , the fluid heating device 11 a , and the detergent inlet 820 , and is supplied to the washing tub 810 . In this case, the wash water supplied from the water supply port 813 is heated to an optimum temperature by the fluid heating device while dissolving the detergent using the heated wash liquid.

Finally, a case where clean water is supplied to washing tub 810 in clothes washing apparatus 800 will be described.

FIG. 37 shows a path of washing water when clean water is supplied into clothes washing apparatus 800 . The flow of wash water is indicated by thick lines.

The control unit 825 provides instructions to the switching valve 816 . The switching valve 816 switches the valve of the switching valve 816 according to an instruction from the control unit 825 to allow washing water to flow into the main water channel 814 .

Accordingly, the washing water supplied from the water supply port 813 flows through the main water channel 814 and the detergent inlet 820 in order, and is supplied to the washing tub 810 . In this case, the washing water supplied from the water supply port 813 dissolves the detergent. Next, FIG. 38 is a schematic cross-sectional view showing another example of the fluid heating device used in the clothes washing device 800 . A fluid heating device 11q shown in Fig. 38 is a heating device using a ceramic heating element.

The fluid heating device 11q shown in FIG. 38 is mainly composed of a cylindrical ceramic heating element 837 , a pair of electrode terminals 842 , a spring 844 , a drain tap 843 , a water inlet 840 , and a water outlet 841 . Also, a spring 844 is wound around the outer peripheral surface of the cylindrical ceramic heating element 837 in the same manner as the outer peripheral surface of the sheathed heating element 505 in FIG. 4 to form a helical shape.

First, wash water is supplied from the water inlet 840 . In this case, predetermined electric power is supplied from the control unit 825 to the pair of electrode terminals 842 . With this, the cylindrical ceramic heating element 837 is heated. The washing water supplied from the water inlet 840 is heated while flowing downward along the inner side of the cylindrical ceramic heating element 837 , and heated while flowing upward through the outer side of the ceramic heating element 837 from below the fluid heating device 11 a.

When the washing water flows upward through the outer peripheral surface of the ceramic heating element 837 from below the fluid heating device 11a, the heat of the ceramic heating element 837 is efficiently supplied to the washing water by means of the spiral flow path 510 formed by the spring 844. , the heated wash water is discharged from the water outlet 841.

In addition, generally, the electric power that can be supplied to the household clothes washing machine 800 is limited by the circuit breaker of the switchboard, and the upper limit is 1500W. Therefore, considering the electric power used by the electric motor 811 incorporated in the laundry washing apparatus 800, the power that can be used for the fluid heating apparatus 11a is limited. Therefore, in the clothes washing machine 800 of the sixth embodiment, the control unit 825 distributes power so that the sum of the power of the fluid heating device 11a and the electric motor 811 reaches the maximum within a range not exceeding a predetermined value (for example, 1300W).

Specifically, when tap water is added to the washing tank 810 and the motor 811 is not rotating, the power supplied to the fluid heating device 11a is set to the maximum value (for example, 1300W), and when the motor 811 is rotating, for example, When the temperature of the washing water is low during washing, the power supplied to the fluid heating device 11a is set to be the difference between a predetermined value and the power of the motor 811 .

In addition, the control unit 825 controls the flow rate of the pump 824 by using an appropriate temperature control function so that the water temperature detected by a thermostat (not shown) installed downstream of the fluid heating device 11a is a temperature suitable for washing.

The control part 825 controls the electric power supplied to the fluid heating apparatus 11a so that it may reduce even if the water outputted by the pump 824 controls the flow rate and is higher than a preset temperature.

Also, when the water temperature is 5°C, the detergent is not easily dissolved in the washing water. However, in this embodiment, the washing water supplied from the water supply port 813 through the bypass path 815 and the water suction path 822 is heated by the fluid heating device 11a, so that the detergent injected from the detergent inlet 820 is easily dissolved in the washing water.

Washing water in which detergent is dissolved is used to saturate the laundry (clothes) with the detergent, and to wash without damaging the clothes. Moreover, since the washing water can be heated in an instant, it is not necessary to heat the washing water in vain, and the cost and power consumption can be reduced.

Furthermore, by using the fluid heating device 11a, the washing water flows through the outer peripheral surface of the sheathed heating element 505, so that all the heat emitted from the sheathed heating element 505 is supplied to the washing water. Therefore, heat from the sheathed heating element 505 can be efficiently supplied to the wash water. As a result, it is possible to realize the clothes washing device 800 using the fluid heating device 11a which can be reduced in size and has a high heat exchange rate.

Moreover, in addition to dissolving the detergent, the heated washing water also has the effect of easily decomposing the dirt and oil stains on the clothes. Therefore, the washing time can be shortened and high-performance washing can be performed.

In addition, by supplying the washing water heated by the fluid heating device 11a to the washing tank 810, the inside of the washing tank 810 can be heat-sterilized, and the effect of sterilization or sterilization can also be obtained. Also, in this case, the temperature of the washing water heated by the fluid heating device 11a may be about 60°C, but only when the clothes washing device 800 is covered to ensure the safety of the user.

Moreover, although the case where the fluid heating apparatus is used for the clothes washing apparatus 800 arrange|positioned vertically was demonstrated above, it is not limited to this. The fluid heating device can also be used in other types of clothes washing devices. For example, the fluid heating device can also be used in a horizontal or oblique drum laundry washing device.

In addition, in the above-mentioned first to sixth embodiments, the case where the fluid heating device is used in the sanitary washing device and the clothes washing device has been described, but it is not limited thereto, and the fluid heating device can also be used in a shower appliances or dishwashers, etc.

In the above-mentioned sixth embodiment, the box main body 600 corresponds to the box, the sheathed heating element 505 corresponds to the heating element, and the flow paths 510, 522, 523, 524, 527, 528, 529, 530, and 531 correspond to In the flow path, the springs 515a to 515e correspond to the helical springs, the turbulent flow generating mechanism, and the helical member, the washing water inlet 511 corresponds to the fluid inlet and the cylindrical fluid inlet, and the washing water outlet 512 corresponds to the fluid outlet and the cylindrical fluid outlet. , the thermistor 518 is equivalent to a temperature detector, the control unit 4 is equivalent to a control device, the heat sensitive plate P8 is equivalent to a heat sensitive plate, the heat transfer plate P10 is equivalent to a heat transfer member, and the bidirectional thyristor element 523 is equivalent to a heating electronic part , the pump 824 is equivalent to the supply device.

Claims (37)

1. A fluid heating device, characterized in that, having a box body and a heating element accommodated in the box body, forming a flow path between the outer surface of the heating element and the inner surface of the box, further comprising a turbulence generating mechanism for generating turbulence in at least a part of the flow path; a temperature detector that detects the temperature of the heating element, and a control device for controlling the power supplied to the heating element according to the temperature detected by the temperature detector; a heat sensitive plate provided in contact with the heat generating body while having a portion protruding outside the case, The temperature detector is arranged outside the box, and detects the temperature of the heating element through the heat-sensitive plate. 2. A fluid heating device, characterized in that, having a box body and a heating element accommodated in the box body, forming a flow path between the outer surface of the heating element and the inner surface of the box, further comprising a turbulence generating mechanism for generating turbulence in at least a part of the flow path; a heat transfer member provided in contact with fluid within the flow path while having a portion protruding to the outside of the case, and The heat-generating electronic component for supplying electric power to the heat-generating body is provided on a part of the heat-conducting member protruding to the outside of the housing. 3. A fluid heating device according to claim 1 or 2, characterized in that, The turbulent flow generating means is provided at a portion where the velocity of the fluid flowing through the flow path decreases. 4. The fluid heating device according to claim 1 or 2, characterized in that, The turbulent flow generating mechanism is provided on the downstream side of the flow path. 5. A fluid heating device according to claim 1 or 2, characterized in that, The turbulent flow generating means is intermittently provided in the flow path. 6. A fluid heating device as claimed in claim 1 or 2, characterized in that, The turbulent flow generating mechanism is provided on the upstream side of the flow path. 7. A fluid heating device as claimed in claim 1 or 2, characterized in that The heating element has a rod-like shape with a circular or elliptical cross section. 8. A fluid heating apparatus as claimed in claim 7, wherein: The turbulent flow generating mechanism includes a helical member wound along the outer peripheral surface of the heating element. 9. A fluid heating apparatus as claimed in claim 8, wherein: The helical member is composed of a helical spring. 10. A fluid heating apparatus as claimed in claim 8, wherein: The case has a cylindrical fluid inlet and a cylindrical fluid outlet arranged in parallel to the winding direction of the helical member. 11. The fluid heating apparatus of claim 7, wherein: The tank has a fluid inlet and a fluid outlet, At least one of the fluid inlet and the fluid outlet is arranged at a position deviated from the central axis of the heating body, so that the fluid flows in or out along the peripheral surface of the heating body. 12. A fluid heating device as claimed in claim 1 or 2, characterized in that The heating element has a maximum heating value greater than or equal to 1.5kW and less than or equal to 2.5kW. 13. A fluid heating device as claimed in claim 1 or 2, characterized in that The heating element has the performance that the maximum gradient of the rising speed of the fluid temperature is greater than or equal to 10K per second. 14. A fluid heating device as claimed in claim 1 or 2, characterized in that The heating element includes a sheathed heating element. 15. A fluid heating apparatus as claimed in claim 14 wherein, The sheathed heating element has a maximum power density greater than or equal to 30 W/cm ² and less than or equal to 50 W/cm ² . 16. A fluid heating device as claimed in claim 1 or 2, characterized in that The heating element includes a ceramic heating element. 17. The fluid heating apparatus of claim 1, wherein: The heating element has a heating part and a non-heating part, The heat sensitive plate is provided in contact with a non-heat generating portion of the heat generating body. 18. The fluid heating apparatus of claim 1, wherein: the tank has the fluid inlet and the fluid outlet, The heat sensitive plate is arranged to be in contact with the heating body near the fluid outlet of the box. 19. The fluid heating apparatus of claim 1, wherein: The heat sensitive plate is bonded to the heat generating body. 20. The fluid heating apparatus of claim 1, wherein: The heat sensitive plate is brazed to the heating element. 21. The fluid heating apparatus of claim 1, wherein: The heat sensitive plate has a leakage prevention function of preventing fluid leakage in the case. 22. The fluid heating device of claim 1, wherein: The heat sensitive plate is made of metal. 23. The fluid heating apparatus of claim 1, wherein: The heat sensitive plate is made of copper plate. 24. The fluid heating device of claim 1, wherein: The heat sensitive plate is formed in an L shape. 25. The fluid heating apparatus of claim 2, wherein: the tank has the fluid inlet and the fluid outlet, The heat transfer member is disposed in contact with the fluid proximate a fluid inlet of the tank. 26. The fluid heating apparatus of claim 2, wherein: The heat transfer member has a leak prevention function of preventing fluid in the case from leaking. 27. The fluid heating apparatus of claim 2, wherein: The heat transfer member is made of metal. 28. The fluid heating apparatus of claim 2, wherein: The heat transfer member is composed of a copper plate. 29. The fluid heating apparatus of claim 2, wherein: The heat transfer member is formed in an L-shape. 30. A fluid heating apparatus as claimed in claim 1 or claim 2 wherein, The case comprises a plurality of case parts, The heating element includes a plurality of heating elements respectively accommodated in the plurality of box parts, flow paths are respectively formed between the inner surface of each box part and the outer surface of each heating element part, The turbulent flow generating mechanism further includes a plurality of turbulent flow generating mechanism parts that generate turbulent flow in at least a part of each of the plurality of flow paths. 31. A fluid heating apparatus as claimed in claim 30 wherein, each of the plurality of housing sections has a fluid inlet and a fluid outlet, The fluid outlet of one case part is formed to be fittable with the fluid inlet of the other case part. 32. A fluid heating apparatus as claimed in claim 30 wherein, each of the plurality of housing sections has a fluid inlet and a fluid outlet, A connection member is also provided for connecting the fluid outlet of the one tank part with the fluid inlet of the other tank part. 33. A fluid heating apparatus as claimed in claim 30 wherein, The plurality of case portions have the same shape. 34. A washing device characterized in that, It is a washing device that sprays the fluid provided by the water supply source to the washed part of the human body, including a fluid heating device that heats fluid supplied from the water supply source while flowing; and an ejection device that ejects the fluid heated by the fluid heating device toward the human body, The fluid heating device has box, and the heating element accommodated in the box, A flow path is formed between the outer surface of the heating element and the inner surface of the box, A turbulent flow generating mechanism for generating turbulent flow is further provided on at least a part of the flow path; a temperature detector that detects the temperature of the heating element, and a control device for controlling the power supplied to the heating element according to the temperature detected by the temperature detector; a heat sensitive plate provided in contact with the heat generating body while having a portion protruding outside the case, The temperature detector is arranged outside the box, and detects the temperature of the heating element through the heat-sensitive plate. 35. A washing device characterized in that, It is a washing device that sprays the fluid provided by the water supply source to the washed part of the human body, including a fluid heating device that heats fluid supplied from the water supply source while flowing; and an ejection device that ejects the fluid heated by the fluid heating device toward the human body, The fluid heating device has box, and the heating element accommodated in the box, A flow path is formed between the outer surface of the heating element and the inner surface of the box, A turbulent flow generating mechanism for generating turbulent flow is further provided on at least a part of the flow path; a heat transfer member provided in contact with fluid within the flow path while having a portion protruding outside the case, and The heat-generating electronic component for supplying electric power to the heat-generating body is provided on a part of the heat-conducting member protruding to the outside of the housing. 36. A washing device characterized in that, is a washing apparatus for washing clothes using fluid supplied from a water supply, comprising sink, a fluid heating device that heats fluid supplied from the water supply source while flowing; and supplying the fluid heated by the fluid heating means to the supply means in the washing tank, The fluid heating device has box, and the heating element accommodated in the box, A flow path is formed between the outer surface of the heating element and the inner surface of the box, A turbulent flow generating mechanism for generating turbulent flow is further provided on at least a part of the flow path; a temperature detector that detects the temperature of the heating element, and a control device for controlling the power supplied to the heating element according to the temperature detected by the temperature detector; a heat sensitive plate provided in contact with the heat generating body while having a portion protruding outside the case, The temperature detector is arranged outside the box, and detects the temperature of the heating element through the heat-sensitive plate. 37. A washing device characterized in that, is a washing apparatus for washing clothes using fluid supplied from a water supply, comprising sink, a fluid heating device that heats fluid supplied from the water supply source while flowing; and supplying the fluid heated by the fluid heating means to the supply means in the washing tank, The fluid heating device has box, and the heating element accommodated in the box, A flow path is formed between the outer surface of the heating element and the inner surface of the box, A turbulent flow generating mechanism for generating turbulent flow is further provided on at least a part of the flow path; a heat transfer member provided in contact with fluid within the flow path while having a portion protruding to the outside of the case, and The heat-generating electronic component for supplying electric power to the heat-generating body is provided on a part of the heat-conducting member protruding to the outside of the housing.

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