JPH11159783A - Electric water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an electric water heater having a good handling convenience with small change in a supply hot water temperature. SOLUTION: In the electric water heater comprising a hot water reservoir 1, a motor driven water and hot water mixing valve 4, a temperature sensor 21 and water flow detecting means 20, a plurality of water and hot water mixing plugs 5, 6, remote controllers 22, 23 respectively having temperature setting priority switches 24, 25, a controller 26 for controlling a mixing ratio of water and hot water via the valve 4 and the like; a set temperature of one remote controller is preferentially operated, and a mode for returning the supply hot water temperature to the set temperature of the one remote controller when the priority switch of the other remote controller is operated so that a right of the priority is moved to the other remote controller to alter the supply hot water temperature is incorporated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric water heater for supplying hot water by controlling the temperature of hot water.

[0002]

2. Description of the Related Art FIG. 1 is a block diagram of an electric water heater according to the present invention. Since the structure of the prior art is almost the same, the structure of the conventional electric water heater will be described below with reference to the diagram of the present invention. explain. First, the electric hot water mixing valve 4 is controlled to adjust the mixing amount of hot water in the hot water storage tank 1 and water from the water source, and the detection temperature of the second temperature sensor 21 is set in advance by the kitchen remote controller 22 or the bathroom remote controller 23. Keep the hot water temperature. The hot water which has reached the set temperature passes through the mixing hot water supply pipe 12 and is supplied from hot water mixing taps 5 and 6 provided in the kitchen and the bathroom.

The hot water supply operation will be described with reference to the flowchart of FIG. 5. When the power is initially turned on, the priority of determining the hot water supply temperature is given to the bathroom remote controller 23. When 6 is opened, hot water at 50 ° C. is supplied (step S-20). Next, when the priority switch 24 of the kitchen remote controller 22 is pressed (step S-2).
1) The hot water temperature becomes the set temperature of the kitchen remote controller 22.
In this example, the hot water temperature remains at 50 ° C. (step S-22). Next, the user operates the kitchen remote controller 22 to change the hot water temperature from 50 ° C. to, for example, 70 ° C. (step S-2).
3). Then, the temperature of the hot water becomes 70 ° C., and the temperature of the hot water coming out of the hot and cold water mixing taps 5 and 6 becomes 70 ° C. (step S-24).

Next, the priority switch 2 of the bathroom remote controller 23
Press 5 (step S-25). In this case, the hot water temperature becomes the set temperature of the bathroom remote controller 23, and changes from 70 ° C to 50 ° C.
It changes to ° C (Step S-26). Next, the priority switch 24 of the kitchen remote control 22 is pressed (step S-27).
Then, the hot water temperature becomes the set temperature of the kitchen remote controller 22 and changes from 50 ° C to 70 ° C (step S-2).
8).

[0005]

According to the electric water heater configured as described above, when the priority is moved, the hot water temperature changes and the hot water temperature suddenly fluctuates. Was. In addition, a thermostatic mixer tap is often used for the hot-water mixer tap 6 on the bathroom side. One of the features of the mixer tap side is that the temperature of hot water supplied to the mixer tap is 5 ° C. to 10 ° C. higher than the actually used hot water temperature. Since the temperature of the hot water is stabilized by increasing the temperature, it is not desired to change the temperature of the hot water when used in a shower or the like. However, the hot water supply temperature is easily changed in a kitchen or the like, and it is necessary to shift the priority to the bathroom in order to return to the set temperature of the bathroom.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its object to provide an electric water heater having a controllable hot water temperature with little fluctuation of the hot water temperature. .

[0007]

SUMMARY OF THE INVENTION An electric water heater according to the present invention comprises a hot water tank for heating and storing water, and an electric hot water mixing valve for mixing hot water and water in the hot water tank. A temperature sensor and a water flow detecting means for detecting the temperature and flow rate of the mixed hot water sent from the electric hot water mixing valve, a plurality of hot water mixing taps for supplying the mixed hot water mixed by the electric hot water mixing valve, and a temperature setting priority switch A remote control unit for setting the temperature of hot and cold water supplied from the hot and cold water mixing tap, a remote control unit, a control unit for receiving a signal from the temperature sensor and controlling the mixing ratio of hot and cold water by the electric hot and cold water mixing valve, and the like. Prepared,
When the set temperature of one remote control section is prioritized and the priority switch is operated by operating the priority switch of the other remote control section to change the hot water temperature to the other remote control section, the hot water temperature becomes one of the above. There is a mode for returning to the set temperature of the remote controller.

In addition, a bathroom remote control unit and a kitchen remote control unit are provided, and the set temperature of the bathroom remote control unit is prioritized, and the priority switch is operated by operating the priority switch of the kitchen remote control unit to shift the priority to the kitchen remote control unit, and the hot water supply hot water temperature is set. Has been changed to a mode in which the hot water temperature returns to the set temperature of the bathroom remote controller after a certain period of time.

Furthermore, a hot water tank for heating and storing water, an electric hot water mixing valve for mixing the hot water and the hot water in the hot water tank, and a temperature of the mixed hot water sent from the electric hot water mixing valve. Temperature and water flow detection means for detecting the flow rate of the hot and cold water, a plurality of hot and cold water mixing taps for supplying mixed hot and cold water mixed by an electric hot and cold water mixing valve, and a priority switch for temperature setting are respectively provided in the hot and cold water mixing taps. In an electric water heater including a remote controller for setting a temperature and a controller for receiving a signal from the temperature sensor and controlling a mixing ratio of hot and cold water by an electric hot and cold water mixing valve, a bathroom remote controller and a kitchen It has a remote control unit and prioritizes the set temperature of the bathroom remote control unit, operates the priority switch of the kitchen remote control unit, the priority moves to the kitchen remote control unit, and when the hot water temperature is changed, Hot water supply temperature of hot water at the time of detection has ended has a mode to return to the set temperature of the bathroom remote controller.

[0010] Also, a hot water tank for heating and storing water, an electric hot water mixing valve for mixing the hot water and the water in the hot water tank, and a temperature of the mixed hot water sent from the electric hot water mixing valve. Temperature and water flow detection means for detecting the flow rate of the hot and cold water, a plurality of hot and cold water mixing taps for supplying mixed hot and cold water mixed by an electric hot and cold water mixing valve, and a priority switch for temperature setting are respectively provided in the hot and cold water mixing taps. A remote control unit for setting a temperature, a control unit for receiving a signal from the remote control unit, a temperature sensor, and a water flow detecting unit and controlling a mixing ratio of hot and cold water by an electric hot and cold water mixing valve, and the like; Has a priority, and when the priority switch is moved to another remote controller by operating the priority switch of the other remote controller, the hot water temperature is not changed.

Furthermore, a bathroom remote control unit and a kitchen remote control unit are provided, and the set temperature of the bathroom remote control unit is prioritized.
A mode is provided in which the hot water temperature is not changed when the priority switch is operated by operating the priority switch of the kitchen remote controller.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a configuration diagram of an electric water heater according to Embodiment 1 of the present invention. Reference numeral 1 denotes a hot water storage tank for storing water or hot water, and 2 denotes a heating element provided at a lower portion of the hot water storage tank 1 to heat water in the hot water storage tank 1 and boil the same. Reference numeral 3 denotes a first temperature sensor provided on the outer periphery of the lower portion of the hot water tank 1 and detecting a boiling state of water in the hot water tank 1. Reference numeral 4 denotes an electric hot / water mixing valve for changing the mixing ratio of water and hot water by electric control to produce hot / cold water at an appropriate temperature. 5 is a kitchen tap mixer attached to the kitchen, 6 is a bathroom tap mixer attached to the bathroom.
Uses, for example, a one-lever type, and the bathroom hot-water mixing tap 6 uses, for example, a mixing tap with a thermostat.

A hot water supply pipe 7 has one end mounted on the upper portion of the hot water tank 1 and the other end mounted on a hot water supply port of the electric hot water mixing valve 4 for supplying hot water boiled in the hot water storage tank 1 to the electric hot water mixing valve 4. Reference numeral 10 denotes a water supply pipe for connecting one end to a water source such as a water pipe and attaching the other end to a water supply port of the electric hot water mixing valve 4 to supply water from the water source to the electric hot water mixing valve 4. 11 is a water pipe 1
This is a hot water tank water supply pipe for supplying water in the hot water tank 1 to the hot water tank 1, and is branched from the water supply pipe 10 and attached to a lower portion of the hot water tank 1.

A mixing hot water supply pipe 12 has one end attached to a mixing hot water outlet of the electric hot water mixing valve 4, and 13 and 14 branch off from the mixing hot water supply pipe 12 and have ends respectively connected to the kitchen hot water mixing tap 5 and the bathroom hot water mixing tap. 6 is a kitchen hot water pipe and a bathroom hot water pipe. Reference numeral 15 denotes a mixing tap water supply pipe branched from the water supply pipe 10, and reference numerals 16 and 17 denote branch pipes from the mixing tap water supply pipe 15 and ends thereof attached to the kitchen hot water mixing tap 5 and the bathroom hot water mixing tap 6, respectively. Tube.

Reference numeral 18 denotes a pressure reducing valve attached to the hot water supply pipe 11 for reducing the pressure of the water source, and 19 denotes a hot water in the hot water storage tank 1 which is attached to the hot water supply pipe 7 near the upper part of the water storage tank 1 and which has expanded during boiling. It is a relief valve to escape. Reference numeral 20 denotes water flow detecting means for detecting the flow rate of mixed hot water flowing in the mixed hot water supply pipe 12, and 21 denotes hot water flowing through the mixed hot water supply pipe 12 attached to the mixed hot water supply pipe 12 for temperature correction by the electric hot water mixing valve 14. It is a second temperature sensor for detecting a temperature.

Reference numeral 22 denotes a kitchen remote control mounted near the kitchen hot water mixing tap 5, and reference numeral 23 denotes a bathroom remote control mounted near the bathroom hot water mixing tap 6. Reference numeral 24 denotes a kitchen remote control priority switch operated when giving priority to the kitchen remote control 22, and reference numeral 25 denotes a bathroom remote control priority switch which is operated when giving priority to the bathroom remote control 23. The priority can be given to the remote controller on the pressed side. Therefore, the hot water temperature can be changed only from the remote controller having the priority, and the hot water temperature cannot be changed from the remote controller having no priority.

Reference numeral 26 denotes a control device for controlling the entire electric water heater. The first and second temperature sensors 3 and 21 and the water flow detecting means 2 are provided.
0, while receiving signals from the kitchen remote control 22 and the bathroom remote control 23, and controlling the heating element 2, the electric hot and cold water mixing valve 4, and the like. In this control device 26, the bathroom remote controller 23 has a higher priority than the kitchen remote controller 22. Even when the hot water temperature is changed by the kitchen remote controller 22 having the priority, the bathroom remote controller 23 has a predetermined time.
To the set temperature.

That is, when the priority is switched from the bathroom remote controller 23 to the kitchen remote controller 22, the hot water temperature is returned to the set temperature of the bathroom remote controller 23 after a certain period of time. When the priority is switched, the hot water temperature is switched to the temperature set in the bathroom remote controller 23. Note that the priority at the time of turning on the power is on the bathroom remote controller 23 side, and the temperature of hot water can be changed from the bathroom remote controller 23.
From 2 it is not possible to change the hot water temperature.

The operation of the first embodiment configured as described above will be described with reference to FIG. The water sent from the water source to the hot water tank water supply pipe 11 is decompressed through the pressure reducing valve 18 and flows into the hot water tank 1 to keep the inside of the hot water tank 1 always full. In this state, when the heating element 2 is energized using, for example, midnight power, the water in the hot water storage tank 1 is heated. Then, when the first temperature sensor 3 detects a preset boiling temperature, the energization of the heating element 2 is stopped. The hot water in the hot water storage tank 1 expanded by heating is drained from the relief valve 19.

The hot water and the water source water stored in the hot water storage tank 1 pass through the hot water supply pipe 7 and the water supply pipe 10 to reach the electric hot water mixing valve 4, where the second hot water and the second water attached to the mixed hot water supply pipe 12. Is detected by the temperature sensor 21 of the kitchen remote controller 2
The mixing ratio of hot water and water is controlled such that the temperature becomes a temperature set in advance by 2 (or bathroom remote controller 23). At this time, the water flow detecting means 20 detects whether or not hot water is flowing through the mixing hot water supply pipe 12, and feeds back to the electric hot and cold water mixing valve 4 based on the temperature detected by the second temperature sensor 21 only when the hot water flow is detected. Perform control.

In determining the temperature of hot and cold water detected by the second temperature sensor 21, if the kitchen priority switch 24 is pressed, the kitchen remote control 22 can be given priority. Bathroom remote control 2 which can only change hot water temperature and does not have priority
3 cannot change the hot water temperature. Also,
When the bathroom priority switch 25 is pressed, the bathroom remote control 2
3 can be given priority, the hot water temperature can be changed only from the bathroom remote controller 23, and the kitchen hot water temperature cannot be changed from the kitchen remote controller 22 without priority. The mixed hot water having the desired temperature is supplied through the hot water mixing pipes 5 and 6 through the mixing hot water supply pipe 12.

The above operation will be described in more detail with reference to the flowchart of FIG. First, when the initial power is turned on,
The power-on priority is on the bathroom remote control 23 side. When the power is turned on, for example, the hot water temperature is set to 50 ° C. Thus, the priority of the bathroom remote controller 23 is turned ON, the current hot water temperature becomes 50 ° C., and the set value of the hot water temperature becomes 50 ° C. On the other hand, the priority of the kitchen remote control 22 is turned off, and the current hot water temperature becomes 50 ° C. (step S−
1). As described above, since the priority at the time of turning on the power is on the bathroom remote control 23 side, the hot water temperature can be changed from the bathroom remote control 23 side, but the hot water temperature cannot be changed from the kitchen remote control 22 side. Thus, when the kitchen hot water mixing tap 5 and the bathroom hot water mixing tap 6 are opened, hot water of 50 ° C. is supplied from here.

Next, the priority switch 2 of the kitchen remote controller 22
When 4 is pressed (step S-2), the priority moves from the bathroom remote controller 23 to the kitchen remote controller 22. Thus, the priority of the bathroom remote controller 23 is turned off, and the current hot water temperature is 5
At 0 ° C., the set value of hot water temperature becomes 50 ° C. On the other hand, the priority of the kitchen remote control 22 is turned ON, and the current hot water temperature becomes 50 ° C. (step S-3). In this way, the priority has been shifted to the kitchen remote controller 22 side, so that the hot water temperature can be changed from the kitchen remote controller 22, but the hot water temperature cannot be changed from the bathroom remote controller 23. Thus, when the kitchen hot water mixing tap 5 and the bathroom hot water mixing tap 6 are opened, hot water of 50 ° C. is supplied from here.

Next, when the kitchen remote controller 22 is operated to change the hot water temperature from 50 ° C. to, for example, 70 ° C. (step S-4), the priority of the bathroom remote controller 23 is turned off.
The current hot water temperature becomes 70 ° C, and the set value of hot water temperature is 5
0 ° C. On the other hand, the priority of the kitchen remote control 22 is ON, and the current hot water temperature becomes 70 ° C. (step S−
5). In this state, since the priority is given to the kitchen remote control 22 side, the hot water temperature can be changed from the kitchen remote control 22 side, but the hot water temperature cannot be changed from the bathroom remote control 23 side. In this way, the hot water temperature becomes 70 ° C
The temperature of the hot water supplied from the kitchen hot water mixing tap 5 and the bathroom hot water mixing tap 6 are both 70 ° C.

The hot water temperature is set to 70 by the kitchen remote controller 22.
After the temperature is changed to ° C., for example, it is checked whether 10 minutes have elapsed (step S-6). When 10 minutes have elapsed, the hot water temperature is automatically returned to 50 ° C. Therefore, the priority of the bathroom remote controller 23 is OFF, and the current hot water temperature is 5
The temperature is 0 ° C., and the set value of the hot water temperature is 50 ° C. on the other hand,
The priority of the kitchen remote control 22 is ON, and the current hot water temperature becomes 50 ° C. (step-7). Thus, the hot water temperature returns to 50 ° C., and the temperatures of the hot water supplied from the kitchen hot water mixing tap 5 and the bathroom hot water mixing tap 6 both become 50 ° C.

Next, the priority switch 2 of the bathroom remote controller 23
Pressing 5 (step-8) gives priority to kitchen remote control 2
Move from 2 to the bathroom remote control 23. As a result, the priority of the bathroom remote controller 23 is turned ON, and the current hot water temperature is
In ° C., the set value of hot water temperature becomes 50 ° C. On the other hand, the priority of the kitchen remote control 22 is turned off, and the current hot water temperature becomes 50 ° C. Since the priority has been transferred to the bathroom remote controller 23, the hot water temperature can be changed from the bathroom remote controller 23, but the hot water temperature cannot be changed from the kitchen remote controller 22 (step S-9). In this way, the hot water temperature remains at 50 ° C., and the temperature of the hot water coming out of the kitchen hot water mixing tap 5 and the bathroom hot water mixing tap 6 both becomes 50 ° C.

Next, the priority switch 2 of the kitchen remote controller 22
Pressing 4 (step S-10) shifts the priority from the bathroom remote control 23 to the kitchen remote control 22. Thus, the priority of the bathroom remote controller 23 is turned off, the current hot water temperature is 50 ° C., and the set value of the hot water temperature is 50 ° C. On the other hand, the priority of the kitchen remote control 22 is turned ON, and the current hot water temperature becomes 50 ° C. Since the priority has been shifted to the kitchen remote control 22, the hot water temperature can be changed from the kitchen remote control 22, but the hot water temperature cannot be changed from the bathroom remote control 23 (step S-11). Thus,
The temperature of the hot water supplied from the kitchen hot water mixing tap 5 and the bathroom hot water mixing tap 6 remains 50 ° C. while the hot water temperature remains at 50 ° C.

In the first embodiment, when the priority is switched from the bathroom remote control 23 to the kitchen remote control 22 to change the hot water temperature, the hot water temperature is changed after a certain period of time.
When the priority is switched from the kitchen remote controller 22 to the bathroom remote controller 23 and the set temperature is changed, the hot water temperature is switched to the temperature set in the bathroom remote controller 23. Hot water temperature does not fluctuate during use of the shower or the like, so that the temperature of the hot water of the shower or the like can be stabilized, and the usability is improved.

Second Embodiment FIG. 3 is a flowchart showing the operation of the second embodiment. In the first embodiment, when the hot water temperature is changed with the kitchen remote controller 22 by giving priority to the set temperature of the bathroom remote controller 23, the temperature is returned to the set temperature of the bathroom remote controller 23 after a certain period of time. Then, mixed hot water pipe 1
When the temperature of the hot water supply is changed by the kitchen remote control 22 by using the water flow detection means 20 attached to the control unit 2 and giving priority to the set temperature of the bathroom remote control 23, when the water flow detection by the water flow detection means 20 ends, the bathroom remote control This is to return to the set temperature of 23. That is, when the priority is switched from the bathroom remote controller 23 to the kitchen remote controller 22 and the hot water temperature is changed, the hot water temperature is returned to the set temperature of the bathroom remote controller 23 when the water flow detection is completed. When the priority is switched from 22 to the bathroom remote controller 23 and the hot water temperature is changed, the set temperature is switched to the temperature set in the bathroom remote controller 23.

For example, in the first embodiment, as shown in FIG. 2, the priority is shifted to the kitchen remote controller 22 (step S10).
-2) Even when the temperature of hot water is changed from 50 ° C. to 70 ° C. (step S-4), after 10 minutes (step S-6), the priority is maintained on the kitchen remote control 22 side, and 50 ° C which is the set temperature of the bathroom remote controller 23
(Step S-7).

On the other hand, in the second embodiment, as shown in FIG. 3, the presence or absence of the water flow is detected by using the water flow detection means 20 instead of the lapse of time. Even when the water is moved to the kitchen remote controller 22 (step S-2) and the hot water temperature is changed from 50 ° C. to 70 ° C. (step S-4), the mixed hot water supply pipe 12 is detected by the water flow detecting means 20.
Is detected (step S-6). After the detection of the water flow, the bathroom remote control is automatically set while the priority is maintained on the kitchen remote control 22 side. The temperature returns to 50 ° C., which is the set temperature of 23 (step S-7). That is, hot water is supplied once in the kitchen, and when the hot water is finished, the temperature of the hot water is returned to the original temperature.

In the second embodiment, when the priority is switched from the bathroom remote controller 23 to the kitchen remote controller 22 to change the set temperature, the hot water temperature returns to the set temperature of the bathroom remote controller 23 when the water flow detection is completed. When the priority is switched from the kitchen remote control 22 to the bathroom remote control 23 and the set temperature is changed, the hot water temperature is switched to the temperature set in the bathroom remote control 23, so that the bathroom shower or the like is used. Hot water temperature does not fluctuate in the inside, so that the hot water temperature of the shower or the like can be stabilized, and the usability is improved.

Third Embodiment FIG. 4 is a flowchart showing the operation of the third embodiment. In the first embodiment, the temperature set in the bathroom remote controller 23 is prioritized, and when the hot water temperature is changed in the kitchen remote controller 22, the temperature is returned to the set temperature in the bathroom remote controller 23 after a certain period of time. Thus, when the priority switch is switched to shift the priority from the bathroom remote controller 23 to the kitchen remote controller 22, the hot water temperature is not changed. That is, even when the priority is switched from the bathroom remote controller 23 to the kitchen remote controller 22, the hot water supply temperature is kept unchanged, and when the priority is switched from the kitchen remote controller 22 to the bathroom remote controller 23, the set temperature is changed to the bathroom remote controller. The temperature can be switched to the temperature set at 23.

For example, in the first embodiment, as shown in FIG. 2, the priority is transferred to the kitchen remote controller 22 (step S
-2) Even when the temperature of hot water is changed from 50 ° C. to 70 ° C. (step S-4), after 10 minutes (step S-6), the priority is maintained on the kitchen remote control 22 side, and 50 ° C which is the set temperature of the bathroom remote controller 23
(Step S-7).

On the other hand, in the third embodiment, as shown in FIG. 4, the priority is shifted to the kitchen remote controller 22 (step S-2), and the hot water temperature is changed from 50 ° C. to 70 ° C. (Step S-4), the hot water temperature is not changed and is maintained at 50 ° C. (Steps S-3 and S-).
7). According to the second embodiment, even if the priority is switched from bathroom remote controller 23 to kitchen remote controller 22 to change the hot water temperature, the hot water temperature does not change. The temperature of the hot water such as a shower can be stabilized without temperature fluctuation, and the usability is improved.

[0036]

As is apparent from the above description, the present invention relates to a hot water tank for heating and storing water, and an electric hot water mixing valve for mixing hot water and water in the hot water tank. A temperature sensor and a water flow detecting means for detecting the temperature and flow rate of the mixed hot water sent from the electric hot water mixing valve, a plurality of hot water mixing taps for supplying mixed hot water mixed by the electric hot water mixing valve, and a temperature setting priority switch A remote control unit for setting the temperature of hot and cold water supplied from the hot and cold water mixing tap, a remote control unit, a control unit for receiving a signal from the temperature sensor and controlling the mixing ratio of hot and cold water by the electric hot and cold water mixing valve, and the like. Prepared,
When the set temperature of one remote control section is prioritized and the priority switch is operated by operating the priority switch of the other remote control section to change the hot water temperature to the other remote control section, the hot water temperature becomes one of the above. Since the mode is set so as to return to the set temperature of the remote controller, the temperature of the hot water can be controlled by a plurality of remote controllers, and even when the priority switch is switched, the temperature of the hot water is small and the usability is good.

Further, a bathroom remote control unit and a kitchen remote control unit are provided, and the set temperature of the bathroom remote control unit is prioritized, and the priority switch is operated by operating the priority switch of the kitchen remote control unit to shift the priority to the kitchen remote control unit so that the hot water hot water temperature can be set. Is changed, the temperature of the hot water is returned to the set temperature of the bathroom remote controller after a certain period of time, so that the temperature of the hot water such as a shower in the bathroom can be stabilized, which is convenient.

Further, a hot water tank for heating and storing water, an electric hot water mixing valve for mixing hot water and water heated in the hot water tank, and a temperature of the mixed hot water sent from the electric hot water mixing valve Temperature and water flow detection means for detecting the flow rate of the hot and cold water, a plurality of hot and cold water mixing taps for supplying mixed hot and cold water mixed by an electric hot and cold water mixing valve, and a priority switch for temperature setting are respectively provided in the hot and cold water mixing taps. In an electric water heater including a remote controller for setting a temperature and a controller for receiving a signal from the temperature sensor and controlling a mixing ratio of hot and cold water by an electric hot and cold water mixing valve, a bathroom remote controller and a kitchen It has a remote control unit and prioritizes the set temperature of the bathroom remote control unit, operates the priority switch of the kitchen remote control unit, the priority moves to the kitchen remote control unit, and when the hot water temperature is changed, Since the hot water supply temperature of hot water at the time of detection has been completed is configured to have a mode to return to the set temperature of the bath remote controller, it is possible to hot water temperature stability of the shower, etc. bathroom, which is convenient.

Further, a hot water tank for heating and storing the water, an electric hot water mixing valve for mixing the hot water and the water heated in the hot water tank, and a temperature of the mixed hot water sent from the electric hot water mixing valve. Temperature and water flow detection means for detecting the flow rate of the hot and cold water, a plurality of hot and cold water mixing taps for supplying mixed hot and cold water mixed by an electric hot and cold water mixing valve, and a priority switch for temperature setting are respectively provided in the hot and cold water mixing taps. A remote control unit for setting a temperature, a control unit for receiving a signal from the remote control unit, a temperature sensor, and a water flow detecting unit and controlling a mixing ratio of hot and cold water by an electric hot and cold water mixing valve, and the like; Priority is given, and when the priority switch is moved to another remote controller by operating a priority switch of another remote controller, a mode is provided in which the hot water temperature is not changed. Can control the temperature of the hot water by Con, priority switch is less hot water supply water temperature fluctuations be switched, which is convenient.

Further, a bathroom remote control unit and a kitchen remote control unit are provided, and the set temperature of the bathroom remote control unit is prioritized.
When the priority switch of the kitchen remote control unit is operated and the priority is shifted to the kitchen remote control unit, the mode is configured so that the hot water temperature does not change. It is easy to use.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a first embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the first embodiment.

FIG. 3 is a flowchart showing an operation of the second embodiment.

FIG. 4 is a flowchart showing the operation of the third embodiment.

FIG. 5 is a flowchart showing an example of the operation of the conventional vacuum cleaner.

[Explanation of symbols]

1 hot water tank, 3 first temperature sensor, 4 electric hot water mixing valve, 5 kitchen hot water mixing tap, 6 bathroom hot water mixing tap, 20
Water flow detecting means, 21 second temperature sensor, 22 kitchen remote control, 23 bathroom remote control, 24 kitchen remote control priority switch, 25 bathroom remote control priority switch, 26 control unit.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Tadashi Masuda, Inventor, Kansai Electric Power Co., Inc. 3-2-2 Nakanoshima, Kita-ku, Osaka-shi (72) Inventor Yoshihide Mori 3-2-2, Nakanoshima, Kita-ku, Osaka-shi Inside Kansai Electric Power Co., Inc. (72) Inventor Tatsuya Okui 3-2-2 Nakanoshima, Kita-ku, Osaka-shi

Claims (5)

[Claims] 1. A hot water storage tank for heating and storing water, an electric hot water mixing valve for mixing hot water and water heated in the hot water storage tank, and a mixed hot water sent from the electric hot water mixing valve A temperature sensor and a water flow detecting means for detecting the temperature and flow rate of the water, a plurality of hot water mixer taps for supplying the mixed hot water mixed by the electric hot water mixing valve, and a temperature setting priority switch, respectively provided with the hot water mixer tap. A remote controller for setting the temperature of hot and cold water to be supplied, and an electric water heater including a controller for controlling the mixing ratio of hot and cold water by the electric hot and cold water mixing valve while receiving signals from the remote controller and the temperature sensor. When the set temperature of one remote control section is prioritized and the priority switch is operated by operating the priority switch of the other remote control section and the hot water temperature is changed to the other remote control section, the hot water temperature becomes lower than the above-mentioned one. Remote control Electric water heater characterized by having a mode in which to return to the set temperature of. 2. A bathroom remote control unit and a kitchen remote control unit, wherein a set temperature of the bathroom remote control unit is prioritized,
When the priority switch is operated by operating the priority switch of the kitchen remote controller and the hot water temperature is changed to the kitchen remote controller,
2. The electric water heater according to claim 1, further comprising a mode in which the hot water temperature returns to a set temperature of the bathroom remote controller after a predetermined time. 3. A hot water storage tank for heating and storing water, an electric hot water mixing valve for mixing hot water and water heated in the hot water storage tank, and a mixed hot water supplied from the electric hot water mixing valve. A temperature sensor and a water flow detecting means for detecting the temperature and flow rate of the water, a plurality of hot water mixer taps for supplying the mixed hot water mixed by the electric hot water mixing valve, and a temperature setting priority switch, respectively provided with the hot water mixer tap. A remote controller for setting the temperature of the hot and cold water to be supplied, and an electric water heater including a controller for controlling the mixing ratio of hot and cold water by the electric hot / water mixing valve while receiving signals from the remote controller and the temperature sensor. It has a bathroom remote control unit and a kitchen remote control unit, and prioritizes the set temperature of the bathroom remote control unit, and operates a priority switch of the kitchen remote control unit to shift the priority to the kitchen remote control unit and supply hot water. If you change the temperature, electric water heater characterized by having a mode in which the hot water supply temperature of hot water when the water flow detection is terminated is to return to the set temperature of the bathroom remote controller. 4. A hot water tank for heating and storing water, an electric hot water mixing valve for mixing hot water and water heated in the hot water tank, and a mixed hot water sent from the electric hot water mixing valve. A temperature sensor and a water flow detecting means for detecting the temperature and flow rate of the water, a plurality of hot water mixer taps for supplying the mixed hot water mixed by the electric hot water mixing valve, and a temperature setting priority switch, respectively provided with the hot water mixer tap. A remote control unit for setting the temperature of hot and cold water to be supplied, a control unit for receiving signals from the remote control unit, the temperature sensor, and the water flow detecting means, and controlling a mixing ratio of hot and cold water by the electric hot and cold water mixing valve, and the like. In the water heater, the setting temperature of one remote controller is prioritized, and when the priority switch is operated by operating the priority switch of the other remote controller, the hot water temperature is not changed. Electric water heater characterized by having a de. 5. A bathroom remote control unit and a kitchen remote control unit, wherein a set temperature of the bathroom remote control unit is prioritized,
5. The electric water heater according to claim 4, wherein a mode is provided in which a hot water temperature is not changed when a priority switch is operated by operating a priority switch of the kitchen remote controller.