JP3001307B2 - Pot device with purification function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pot device having a purifying function for keeping hot water by boiling hot water in a container.

[0002]

2. Description of the Related Art In general, a pot device has a container for boiling water in a main body thereof, and heats water contained in the container with a heater to boil it into high-temperature water. Can be poured out.

[0003] However, there are cases in which germs are generated in the water contained in the container, and red rust and mold are generated on the inner surface of the container. It is poured out of the container while being mixed in the water, which may not only impair the flavor of the hot water but also impair the hygiene.

In recent years, therefore, a pot device with a purifying function has been provided which purifies hot water in a container through a purifying filter made of granular activated carbon or the like so that a good and hygienic hot water can be poured out. .

By the way, when hot water is passed through a purification filter such as granular activated carbon, the hot water is deteriorated at an early stage and the purification function is deteriorated. For this reason, conventionally, a circulation path for circulating the hot water in the container is provided. Forming a discharge path for discharging hot water to the outside, providing a purification filter in the middle of the circulation path, further providing individual valves in the circulation path and the discharge path, respectively, when the temperature of the hot water in the container is low, When the temperature of the hot water in the container is lower than the temperature just before the deterioration temperature of the purification filter, the valve of the discharge path is closed and the valve of the circulation path is opened, and in this state, the hot water in the container is circulated through the purification filter by the operation of the electric pump. After the hot water in the container has reached the temperature just before the deterioration temperature of the purification filter, the valve of the discharge path is opened and the valve of the circulation path is closed. Without passing through the Luther so as to flow out from the pouring outlet so as to prevent the deterioration of the purification filter.

[0006]

However, in such a configuration, valves must be provided in the circulation path and the discharge path, respectively, and these valves must be individually controlled according to the temperature of the hot water in the container. Therefore, there is a problem that the structure is complicated and expensive.

The present invention has been made in view of such a point, and an object of the present invention is to provide a pot device with a purifying function which can prevent deterioration of a purifying filter with a simple structure. is there.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to an apparatus for heating water stored in a container with a heater to boil it into high-temperature water and keeping the temperature in the container. An electric pump having a suction port communicating with the
In this electric pump, a first discharge port connected to a pouring path for flowing hot water in the container to the outside and a second discharge port connected to a circulation path for circulating hot water in the container are formed. And a valve body for selectively opening and closing the first and second discharge ports is provided, and a purification filter is provided in the middle of the circulation path,
When the hot water in the container is equal to or lower than the temperature immediately before the deterioration temperature of the purification filter, the first discharge port is closed and the second discharge port is opened by the valve, and the hot water in the container is operated by the electric pump. After the hot water in the container has reached the temperature immediately before the deterioration temperature of the purification filter, the first discharge port is opened and the second discharge port is closed by the valve, and The hot water in the container is discharged to the outside through the discharge passage by the operation of the pump.

[0009]

Before the hot water in the container reaches the temperature immediately before the deterioration temperature of the purification filter, the first discharge port is closed and the second discharge port is opened by the valve element provided in the electric pump, By the operation of the electric pump, the hot water in the container sequentially passes through the purification filter in the middle of the circulation path, whereby the hot water is purified. At this time, the temperature of the hot water is lower than the deterioration temperature of the purification filter, so that the purification filter does not deteriorate. After the hot water in the container reaches the temperature immediately before the deterioration temperature of the purification filter, the valve element opens the first discharge port, closes the second discharge port, and operates the electric pump to operate the container. The hot water inside is poured out to the outside through the pouring channel.

[0010]

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a cylindrical pot body, in which a container 2 is housed, and a heater 3 and a hot water temperature sensor 4 such as a thermistor are attached to the outer bottom surface of the container 2.

A support plate 5 is provided below the container 2, and an electric pump 6 is mounted on the support plate 5. The electric pump 6 is configured as shown in FIGS.
That is, reference numeral 10 denotes a circular casing, and an impeller 11 is housed in the casing 10.
1 has a plurality of blades 17 provided radially on one side of a spinning base 12 having a top shape. A magnet 13 is embedded in the rotation base 12, and a support shaft 14 is attached to a center axis of the rotation base 12. The support shaft 14 is rotatably fitted to an inner wall surface on a center axis of the casing 10. Further, a pivot 15 is integrally provided at the center of the other surface of the rotary base 12, and the pivot 15 is formed in the bearing recess 1 formed on the inner wall surface of the casing 10.
6 so as to be rotatable, the support shaft 14 and the pivot 15
Thus, the impeller 11 is rotatably supported.

A suction port 1 is provided at one end of the casing 10.
One end of the suction port 19 is connected to the bottom surface of the container 2 and communicates with the inside of the container 2, and the other end is connected to the plurality of communication holes 2.
0 ... communicates with the inside of the casing 10.

On the other end surface of the casing 10, a forward / reverse rotation type motor 22 is provided.
The rotating plate 24 is attached to 3. A magnet 25 facing the magnet 13 of the impeller 11 is attached to the rotating plate 24 with a wall surface of the casing 10 interposed therebetween. When the motor 22 starts and the rotating plate 24 rotates together with the rotating shaft 23, the magnet 25 13,25
Of the motor 22 by the mutual magnetic force of the impeller 11
And the impeller 11 rotates.

A first discharge port 27 and a second discharge port 28 are formed on the peripheral surface of the casing 10 at positions substantially opposite to each other. As shown in FIG. 1, an outlet 29 is connected to the first outlet 27, and a circulation path 30 is connected to the second outlet 28. The outlet 29 extends along the outside of the container 2. It extends so as to stand up, its tip is bent in a substantially inverted U-shape, and the opening at the tip end face is exposed outside the pot body 1 as a spout 31. The circulation path 30 extends so as to rise along the outer side of the container 2, and has a leading end connected to the upper side of the container 2 to communicate with the inside of the container 2. A filter accommodating portion 32 is provided in the middle of the circulation path 30. In the filter accommodating portion 32, as shown in FIG. 5, a purification filter 34 composed of, for example, a large number of granular activated carbons 33 is accommodated. At the upper and lower portions of the purification filter 34, mesh-like partition films 35, 35 for preventing the flow of the granular activated carbon 33 are provided.

The first and second casings are provided in the casing 10.
On the inner peripheral wall surface of the portion including the discharge ports 27, 28, there are formed guide concave portions 36, 37 along the circumferential direction, respectively. Further, a rotary valve body 38 for selectively opening and closing the first and second discharge ports 27 and 28 is provided in the casing 10. As shown in FIG. 4, the rotary valve body 38 includes a disc portion 39 and first and second valve portions integrally provided so as to stand substantially perpendicularly to the periphery of the disc portion 39. 40 and 41. The disk part 3
A pivot 42 is integrally formed at the center of the bearing 9, and the pivot 42 overlaps with the pivot 15 of the impeller 11 and rotatably fits in the bearing recess 16 of the casing 10. The first and second valve portions 40 and 41 are arranged so as to be curved in an arc shape and face each other, and to protrude slightly outward from the peripheral edge of the disk portion 39. The two valve portions 40, 41 fit into the guide recesses 36, 37, respectively, and the outer surfaces thereof are slidably adhered to the inner surfaces of the guide recesses 36, 37, respectively.
The first and second discharge ports 27 and 28 are selectively opened and closed by moving the peripheral portion 41 in the guide recesses 36 and 37 in the circumferential direction. On both side edges of the first and second valve portions 40 and 41, bent pieces 43 having a slight width and bent at substantially right angles are formed integrally on the inner sides thereof.

A lid 44 for opening and closing the upper end opening of the container 2 is rotatably mounted on the upper portion of the pot body 1. A vapor release path 45 is formed in the lid 44, and The steam at the time of boiling of the hot water flows out through the steam release passage 45 to the outside. The lid 44 is provided with a boiling sensor 46 for detecting the boiling of the hot water in the container 2 based on the temperature of the steam flowing through the steam release passage 45.

A control unit 48 is provided in the pot body 1, and a microcomputer 49 is incorporated in the control unit 48. On the upper surface of the lid 44, a tapping key 50 and operation keys for turning on / off the purification are provided. 51 are provided. Reference numeral 57 denotes a water level tube for displaying the water level in the container 2 to the outside.

FIG. 6 shows the configuration of the electric circuit, and the tapping key 5 is provided.
0, the operation key 51 for turning on / off the purification is connected to the input port of the microcomputer 49 via the input circuit 52, and the hot water temperature sensor 4 and the boiling sensor 46 are connected via the A / D conversion circuits 53 and 54, respectively. The heater 3 and the electric pump 6 are connected to an output port of the microcomputer 49 via a heater drive circuit 55 and a pump drive circuit 56, respectively. Next, the operation will be described.

When water is supplied into the container 2 and a power switch (not shown) is turned on, the heater 3 is energized, and the water in the container 2 is heated by the heater 3 and gradually rises in temperature. Are sequentially detected by the hot water temperature sensor 4. When the temperature of the hot water in the container 2 rises to a high temperature and boils, this is detected by the boiling sensor 46, and based on this detection, the output of the heater 3 is switched to a low output, and the hot water in the container 2 is heated to a high temperature. It is kept warm as hot water.

Water heating is performed in this manner. If the operation key 51 for turning on / off the purification is set to the ON state during the process of water heating, for example, FIG.
As shown in FIG. 5, when the temperature T of the hot water in the container 2 reaches 50 ° C., the temperature is detected by the hot water temperature sensor 4 and the signal is input to the microcomputer 49. Is controlled to rotate to the left as indicated by the arrow a in FIG. Then, the hot water in the casing 10 turns leftward due to the leftward rotation of the impeller 11, and the swirling flow of this hot water causes the valve body 38 to turn leftward, and the valve portions 40, 41 move inside the guide recesses 36, 37. And one side edge thereof abuts against one end surfaces of the guide concave portions 36 and 37 and stops. The first discharge port 27 is closed and the second discharge port 28 is opened by such movement of the valve portions 40 and 41. Then, the hot water in the casing 10 is sent out from the second discharge port 28 into the circulation path 30 by the rotational force of the impeller 11, and the hot water flows through the circulation path 30 and is returned from the upper part of the container 2 to the inside thereof. Hot water in the lower layer in the container 2 is sucked into the casing 10 through the suction port 19.

In this way, the hot water in the container 2 is
, And sequentially contacts the purification filter 34 in the filter storage part 32 in the middle of the circulation, thereby purifying the hot water.

When the hot water temperature T rises to a temperature immediately before the deterioration temperature of the purification filter 34, for example, 60 ° C. in the course of the circulation, the temperature is detected by the hot water temperature sensor 4, and based on this detection, the electric motor is operated. Impeller 11 of pump 6
Is stopped, and the impeller 11 is set in a state of waiting for an operation of rotating the impeller 11 rightward as indicated by an arrow b in FIG. Then, the circulation of the hot water is stopped by stopping the impeller 11.

When the tapping key 50 is depressed under the condition that the hot water temperature T exceeds 60 ° C., a signal is inputted to the microcomputer 49, and the electric pump 6 is controlled by the microcomputer 49 according to the input. Upon activation, the impeller 11 rotates rightward. And impeller 11
The hot water in the casing 10 turns rightward due to the clockwise rotation, and the valve body 38 turns rightward by the swirling flow of the hot water.
The valve portions 40 and 41 move inside the guide concave portions 36 and 37, and the movement causes the first discharge port 27 to be opened and the second discharge port 28 to be closed. Then, the hot water in the casing 10 is sent out from the first discharge port 27 into the pouring channel 29 by the rotational force of the impeller 11, and the hot water is sequentially discharged from the pouring port 31 through the pouring channel 29. When the pressing of the tapping key 50 is released, the rotation of the impeller 11 is stopped, and the outflow of the hot water from the spout 31 is stopped.

If the operation key 51 for turning on / off the purification is switched from the ON state to the OFF state when the hot water temperature T in the container 2 is in the range of 50 to 60 ° C., the impeller 11
Is stopped, that is, the hot water circulation operation is stopped, and the impeller 11 is set to a standby state in which the impeller 11 rotates clockwise. When the operation key 51 is set to the OFF state from the beginning of turning on the power switch, the setting of the standby state in which the impeller 11 always rotates clockwise without the counterclockwise rotation of the impeller 11 is maintained. .

When the power switch is turned on, the ON state of the operation key 51 may always be automatically set with priority, regardless of the previous operation state. As a constituent material of the purification filter 34, in addition to the case where the granular activated carbon 33 is used, for example, a porous hollow fiber membrane made of polypropylene or the like can be used.

[0027]

As explained above, according to the present invention,
When boiling water, the hot water in the container can be circulated through a purification filter to purify the water, so that the flavorful and sanitary water can be kept warm and poured out. Since only hot water at a temperature before the deterioration temperature passes, thermal deterioration of the purification filter can be prevented, and an appropriate purification function can be maintained for a long period of time. Switching between circulation and discharge of hot water in the container can be performed by a valve mechanism integrally provided in the electric pump, and therefore, control is performed by separately providing valves in the circulation path and the discharge path as in the related art. There is an advantage in that the configuration is simpler than in the case where it is performed, that the assembly is easy and the cost is low.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a pot device according to an embodiment of the present invention.

FIG. 2 is a plan sectional view of an electric pump in the pot device.

FIG. 3 is a longitudinal sectional view of the same.

FIG. 4 is a perspective view of a valve body of the electric pump.

FIG. 5 is a cross-sectional view of a filter storage section in the pot device.

FIG. 6 is a block diagram showing a configuration of an electric circuit in the pot device.

FIG. 7 is a flowchart for explaining the operation of the pot device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 2 ... Container 3 ... Heater 6 ... Electric pump 19 ... Suction port 27 ... Discharge port 28 ... Discharge port 29 ... Outlet path 30 ... Circulation path 34 ... Purification filter 38 ... Valve element

Claims (1)

(57) [Claims] An electric pump having a suction port communicating with the inside of a container is provided, wherein the water contained in the container is heated by a heater, heated to high-temperature water, and kept warm. Form a first discharge port connected to a pouring path through which hot water in the container flows out, and a second discharge port connected to a circulation path through which hot water in the container circulates, and And a valve body for selectively opening and closing the second discharge port, a purification filter is provided in the middle of the circulation path, and when the hot water in the container is at or below the temperature immediately before the deterioration temperature of the purification filter, The first discharge port is closed and the second discharge port is opened by the valve body, and the hot water in the container is circulated through the circulation path by the operation of the electric pump. After the temperature reaches, the first discharge port is And close the second discharge port,
A pot device with a purifying function, wherein hot water in a container is discharged to the outside through the pouring path by operation of an electric pump.