JPS63142407A - Hot water supply equipment - Google Patents

Abstract

PURPOSE:To safely supply hot water to plural hot water supply objects by providing a selector valve which selects plural hot water supply ports and controlling the selector valve and a temperature regulating means in accordance with a hot water supply port set part and a hot water temperature set part. CONSTITUTION:Hot water of a hot water supply machine 16 passes a hot water- side route 17 and cold water passes a cold water-side route 18, and they are led to a mixing unit 19 as the temperature regulating means. A mixture ratio of hot water and cold water is regulated through a pressure balance valve 22 and a mixing valve 23 of the unit 19, and mixed water reaches a selector valve 27 through a thermistor 24, a flow rate sensor 25, and a pressure pump 26. A hot water supply port A28 and a hot water supply port B29 are switched by the selector valve 27. A setter 38 which selects the hot water supply destination and regulates the temperature of mixed hot water is provided in a bathroom, and a remote control setter 39 is provided in a kitchen on the outside of the bathroom. A hot water supply port to be used is selected from hot water supply ports 28-29 by the hot water supply port set part to prevent remaining hot water for hot water supply from being supplied to the other hot water supply objects.

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Application The present invention relates to a water heater that adjusts the temperature of hot water and supplies hot water to a plurality of objects.

2. Description of the Related Art A conventional water heater of this type is shown in FIG. (For example, Japanese Utility Model Publication No. 81-18424) In FIG. 8, water supply 1 is branched into two systems, and hot water supply pipe 3 passing through water heater 2 and water supply pipe 4 are connected to constant temperature water heater 5. . Inside the constant temperature hot water supply device 5, the hot water supply pipe 3
A hot water flow valve 6 is connected to the water supply pipe, and a water flow valve 7 is connected to the water supply pipe to adjust the mixing ratio. The mixing pipe 8 is provided with a thermistor 9 that detects the temperature of the mixed water, and a controller 1 that arbitrarily adjusts the signal of the thermistor 9 and the temperature of the mixed water.
Based on the signal 0, the control device 11 turns on the water flow valve 6 and the water flow valve 7.
is controlled. The mixed hot water passes through a faucet 12 provided at the end of the mixing pipe 8 and is supplied to a bathtub 13 to which hot water is supplied.

The hot water flow valve 6 and the water flow valve 7 are driven by a hot water flow valve motor 14 and a water flow valve motor 15 which are controlled by a control device 11, and are controlled by feeding back a signal from the thermistor 9.

Problems to be Solved by the Invention However, the conventional configuration as described above has the following problems.

(1) After pouring boiling water to raise the water temperature in the bathtub 13, even if the temperature is returned to a low temperature using the controller 10, hot water remains in the mixing pipe B, and the faucet 12 is opened again. Then, boiling water was supplied, which was dangerous.

(2) In addition to the bathtub 13, there are other hot water supply objects in the bathroom, such as washing areas and showers, which have different operating temperature ranges than the bathtub 13. However, since the faucet 12 and constant temperature water heater 5 have a one-to-one correspondence, multiple hot water supply objects can be used. To accommodate this, the same number of constant-temperature water heaters were required.

(3) When only one fixed-temperature water heater 5 supplies hot water to multiple objects, if the mixing pipe 8 is branched off and faucets are installed at multiple locations, other faucets may be connected while hot water is being supplied to the bathtub 13. Once opened, boiling water was also supplied there, which was dangerous.

The present invention solves these conventional problems, and aims to provide a water heater that can safely supply hot water to a plurality of objects.

Means for Solving the Problems In order to solve the above problems, the water heating apparatus of the present invention includes: a temperature regulating means; a plurality of hot water ports to which a path for supplying temperature-controlled hot water to a hot water supply object is connected; a switching valve for switching between the plurality of hot water inlets, a hot water inlet setting section for setting the hot water inlets, a hot water temperature setting section for setting the hot water temperature of the temperature adjusting means;
It is configured to include a switching valve and a controller that controls the temperature adjusting means according to the settings of these setting sections.

Effects of the present invention With the above-described configuration, by selecting the hot water inlet that you want to use in the hot water inlet setting section, it is possible to prevent the remaining hot water from being supplied when hot water is being supplied to other hot water objects, causing a danger, or preventing other hot water from being supplied. This prevents hot water from being started when hot water is being supplied to the target.

Example Embodiments of the present invention will be described below based on the drawings with &.

In FIG. 1, the hot water produced by the water heater 16 is routed through
7, and the water is introduced into the mixing unit 19, which is a temperature regulating means, through the water side route t-. The hot water and water then reach the mixing valve 23 via check valves 20 and 21 and a pressure balance valve 22 that balances the hot water pressure and water pressure. The mixing valve 23 is of an electrically controlled type driven by a motor, and the mixed hot water whose mixing ratio has been adjusted reaches a switching valve 27 via a thermistor 24, a flow sensor 25, and a pressurizing pump 26. The switching valve 27 is also of an electrically controlled type driven by a motor, and the switching valve 27 switches between the hot water supply port A2B and the hot water supply port B29.

The hot water supply port A2B is connected via a path A32 to a shower 30 and a washroom 31 in the washing area, which require hot water in the temperature range from normal water to about 45°C. Further, the hot water supply port B29 is connected via a path B35 to the outlet 34 of the bathtub 33, which requires hot water as well as water at around 42°C. In the unlikely event that there is no mixing valve 23 or switching valve 2 in the hot water supply port A2B,
7 is out of order or the control circuit 36 is out of order.
It has a mechanical temperature safety valve 37 with a temperature sensing element that prevents hot water from being supplied to the boiler and cooker 31.

Furthermore, a setting device 38 is provided in the bathroom for switching the hot water supply light and adjusting the temperature of the mixed hot water. Outside the bathroom, for example, in the kitchen, there is a remote control setting device 39 that performs remote control hot water supply, timer hot water supply, or relaying the start of hot water supply by telephone.
is provided.

FIG. 2 is a detailed diagram of a block around the mixing valve 23. The mixing valve 23 is of a type in which a hot water side valve body 40 and a water side valve body 41 are provided on a shaft 42 and are driven by a motor 43 via a gear box 44.

FIG. 3 is a detailed diagram of the switching valve 27 block.

The switching valve 27 has both ends regulated by a shaft 45, and a valve body A47 and a valve body B4B, which are biased by a spring 46, are driven by a motor 49 via a gear box 50.

At the neutral point, the supply of hot water to the hot water inlets A2B and B29 is stopped, and by being pushed to the left in the figure, hot water is supplied to the hot water inlet A2B, and by being pulled to the right, hot water is supplied to the hot water inlet B29. This serves as a switching, water supply and flow control valve.

The temperature safety valve 37 provided at the hot water supply port A2B is configured to expand and close the flow path with the valve body 52 when the wax thermometer 51, which is a temperature sensing element, reaches a set temperature (46°C) or higher. There is.

FIG. 4 shows details of the setting device 3B.

The shower switch 53 instructs hot water supply to the bathtub 7-30 and the shower switch 54, the bathtub switch 54 instructs hot water supply to the bathtub, the multi-flow switch 55 to increase the flow rate, the small switch 56 to decrease the flow rate, and the stop to call others. A call switch 57 is provided facing the front. When the shower switch 53 and the bathtub switch 54 are pressed, the hot water supply port is switched to the side that was pressed, and the four volumes ( Hot water supply starts at the value set in (not shown). Then, the hot water supply automatically stops when the integrated flow rate value preset by the hot water filling volume volume 5B provided in the area covered by the lid of the setting device 3 is reached.

When you want to change the preset value of flow rate, use multi-switch 5.
5 or by operating the small switch 56. Also,
If you want to change the preset mixed water temperature, adjust it by operating the high switch 59 or low switch 60 inside the lid. Reference numeral 61 is a drain valve confirmation switch, and a signal reception of a remote controller setting device 39, which will be described later, is for turning on. Setting device 38
In addition, it has a display section 62 and a warning buzzer 63.

In addition, the range in which the temperature can be changed with the high switch 59 is from water to 45 when the shower switch 63 is pressed.
℃, and if the bathtub switch 54 is pressed, the temperature can be changed over the entire range from water to 50°C or hot water above 45°C.

FIG. 5 shows details of the remote control setting device 39.

When the remote control switch 64 is pressed, water can be supplied using the remote control if the drain valve confirmation switch 61 is pressed 9 and hot water is not being supplied by operating the setting device 3B.

Further, when the time set by a timer 66 having a clock display section 65 arrives, the timer switch 67 is pressed and hot water can be heated under the same conditions as the remote control switch 64. Furthermore, this remote control setting device 39 has an H
An A adapter is provided, and when hot water supply is instructed via telephone 69, hot water supply can be started under the same conditions as remote control switch 64. During such remote-controlled hot water supply, timer hot water supply, and tele-controlled hot water supply, the hot water temperature is set according to the setting of the hot water temperature volume 70, the switching valve 27 is automatically switched to the hot water supply opening 29 side, and hot water is supplied to the bathtub 33-\. In addition, the remote control setting device 39 is provided with a buzzer 71 that sounds in conjunction with the call switch 57 and various display sections.

FIG. 6 is a control block diagram. In response to signals from the various switches and volume controllers described above, the mixing valve 23 feeds back the mixed water temperature using the thermistor 24 and controls the motor 43 via the adjusting section 72.

In addition, the switching valve 27 is connected to the shower switch 53.
Alternatively, the specified hot water supply port is opened according to an instruction from the bathtub switch 54, and the motor 49 is controlled via the adjustment section 73 by feeding back the signal from the flow rate sensor 25.

The signal from the flow rate sensor 74 is further integrated by a flow rate integration unit 79, and compared with the value of the hot water filling volume 5B to perform fixed water stoppage.

Next, the operation of this embodiment will be explained. Press the shower switch 53 on the setting device 3B and the changeover valve 27 will switch to the hot water supply port A.
The 2B side is opened and hot water supply starts at the temperature and flow rate set in advance by the controller 36. The hot water supply temperature is adjusted by the mixing ratio of hot water and water by the mixing valve 23, and the set temperature and thermistor 24 are adjusted.
The temperatures detected are compared to determine the appropriate temperature. The flow rate is adjusted by the switching valve 27, and the set flow rate and the flow rate sensor 25 are adjusted.
The detected flow rates are compared and a match is obtained. If you want to change the preset water temperature, you can do so by operating the high switch 59 or the low switch 60.

However, when hot water is dispensed using the shower switch 53, even if the high switch 59 is operated, the temperature cannot be set higher than 45°C. If it is desired to change the preset flow rate, the multi-switch 55 or the small-switch 56 is operated. If you want to stop hot water supply,
When the shower switch 53 is pressed again, the switching valve 27 closes the flow path. When the bathtub switch 54 is pressed, the switching valve 27 is switched to the hot water supply port B29 side.
Hot water is supplied at the temperature and flow rate set in .

In the case of hot water supply to this bathtub 33, the hot water filling volume is 5.
When the set value B is reached, the hot water supply is automatically stopped.

In order to prevent users from forgetting to turn off the shower switch 53 when operating the shower switch 53, hot water supply is stopped when the hot water supply volume 58 is continuously used to the set value. These quantitative water shutoffs are performed by integrating the signals from the flow rate sensor 25. When pouring hot water for the purpose of raising the temperature of the water in the bathtub 33 when taking a bath, first press the bathtub switch 54 and then operate the high switch 59 to raise the set temperature to boiling water.

The switching valve 27 opens the hot water supply port B29 side, and the mixing valve 23 fully opens the hot water side to supply hot water.

In this state, when using the splash 31 or shower 30 in the washing area, press the splash/shower switch 53, the mixing valve 22 will immediately change the mixing ratio to the predetermined mixed water temperature, and the switching valve 27 will switch to the hot water inlet 2. The system switches to the sun side and hot water is supplied at a predetermined temperature and flow rate. For this reason, bathtub 3
Even after pouring boiling water on the shower head 3, the boiling water remaining in the path B35 is not supplied to the shower 31 and the shower 30, so it is safe. In addition, the hot water supply target is the switching valve 27
Since hot water is selectively switched by , hot water is not supplied to the bathtub 33 from the bathtub 31 or the shower 30 at the same time, making it safe. In the unlikely event that hot water of 46°C or higher is to be supplied from the hot water supply port 28 due to a malfunction of the mixing valve 23, switching valve 27, or controller 36, the temperature safety valve 37 will immediately operate to supply hot water. Prevent this from happening.

In addition, in this mixing unit 19, the path A32 and the path B are
In addition to being able to be used for different hot water supply objects such as the bathtub 33, the ring 31, and the shower 30, as shown in FIG. can. In this case, route A32
and path B35 merge and connect just before the hot water supply fitting 75. Therefore, depending on the operation of the shower switch 53 and the bathtub switch 54, the route A32 or the route B
Since hot water is supplied through 35, it is possible to prevent danger from remaining hot water in the hot water supply compared to the conventional example where only one route is used. In addition, even if hot water is supplied by operating the shower switch 53 while the bathtub is in the whirlpool,
Hot water at a safe temperature is immediately supplied.

As for the effects of this embodiment, firstly, since the temperature adjusting means uses the mixing valve 23 for mixing hot water, the temperature setting of the setting device 38 can be changed, and the preset mixed water can be adjusted according to the switching operation of the switching valve 27. One of the benefits is that the temperature can be changed more quickly compared to what is done through combustion control in water heaters. Moreover, since the switching valve 27 has a flow rate adjustment function and a water supply function in addition to the switching function, it has the effect of not requiring many valves. In addition, since hot water is supplied to the bathtub 33 in the bathroom, the flush 31 in the bathroom washing area, and the shower 30, the installation location is close and it has the effect that only one setting device is required for three days. Furthermore, a mixing valve 23, a hot water supply port A2B, a hot water supply port B29, a switching valve 2
7 is provided as an integral unit as the mixing unit 19, so it has the effect of being easy to handle in terms of handling, construction, maintenance, heat retention to prevent freezing, etc. In this embodiment, a hot water mixing valve is used as the temperature control means, but a water heater that controls the temperature may be used, for example, a water heater with a gas proportional valve.

Effects of the Invention As described above, according to the water heater of the present invention, the following effects can be obtained.

(1) After hot water is supplied to one of the multiple hot water supply targets connected via multiple hot water supply ports and routes, even if hot water is supplied to another hot water supply target, the hot water remains in the previously used route. There is no danger of hot water being supplied.

(2) One hot water supply device has multiple hot water supply ports, and one
Hot water can be supplied to a plurality of hot water targets using one temperature control means.

(3) A method of lowering the hot water temperature setting in conjunction with the setting of the hot water inlet setting section even if hot water is being supplied at one location and used at another location;
If the water temperature is lowered immediately before switching the hot water supply setting section, hot water will not be supplied.

(4) By connecting multiple routes to multiple hot water supply ports and merging the routes just before one hot water supply fitting, it can be used for hot water supply at one location while maintaining safety.

[Brief explanation of the drawing]

Fig. 1 is a diagram of a hot water supply system using a hot water supply device according to an embodiment of the present invention, Fig. 2 is a sectional view showing a mixing valve block of the same device, and Fig. 3 is a cross-sectional view of the same switching valve block. 4 is a front view of the setting device, FIG. 5 is a front view of the remote control setting device, FIG. 6 is a control block diagram of the device, and FIG. 7 is another hot water heater using the same device. System diagram, FIG. 8 is a diagram of a hot water supply system using a conventional water heater. 23...Mixing valve (temperature control means), 27...
...Switching valve, 28...Hot water supply port A, 29...
...Hot water supply port B, 36...Controller, 3B...
...Setting device (hot water inlet setting section, hot water temperature setting section). Figure 2 Figure 3 Figure 04ゝ I Figure 5 η

Claims (5)

[Claims] (1) A temperature control means for adjusting the temperature of hot water, a plurality of hot water ports to which a path for supplying the hot water whose temperature has been regulated by the temperature control means to the hot water supply target is connected, and a switching valve for switching between the plurality of hot water ports. a hot water inlet setting section for selecting the hot water inlet; a hot water temperature setting section for setting the hot water temperature of the temperature adjusting means; A water heater equipped with a controller that controls temperature adjustment means. (2) The water heater according to claim 1, wherein the temperature adjusting means is a hot water mixing valve. (3) The water heater according to claim 1, wherein the switching valve has a flow rate adjustment and water stop function. (4) The hot water supply device according to claim 1, wherein the hot water supply object to which the plurality of hot water supply ports are connected is a bathtub or a shower in a bathroom washing area. (5) The hot water supply device according to claim 1, which comprises a temperature control means, a plurality of hot water supply ports, and a switching valve as an integrated unit.