JP2002039624A - Heating equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide heating equipment, in which consumption of useless electric power is prevented, and the display is made inoffensive to eyes by bringing a remote controller to a non-display state, at the time when the remote- controller display is not necessary. SOLUTION: In a display status of a step S1, when the present time counted by a timing part 201 comes to a predetermined time zone (e.g. from 0 a.m. to 6 a.m.) (step S2), a display 204 is brought into a non-display status (step S3). Thus consumption of useless power can be prevented, and the display becomes inoffensive to eyes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an electric water heater for heating water in a hot water storage tank.

[Prior art]

There is an electric water heater as a heating device of this kind, and in order to cope with an electricity bill set by an electric power company for the purpose of equalizing the electric power demand, the electric water heater is used for one day by using cheap electric power at midnight. There is a type that stores hot water in a hot water storage tank. In this type of electric water heater, the current time is set with a remote controller, and based on the set current time, when the electricity rate is low at midnight, the heater is energized to heat the water in the hot water storage tank and used every day. I try to store hot water.

[0003] In addition, this type of electric water heater has a hot water supply temperature setting function for setting a hot water supply temperature by opening a faucet with a remote controller according to a use or a preference, and is wasteful when leaving home for a while on a trip. In order to prevent excessive boiling, there is an operation stop function for prohibiting energization of the heater for a number of days set by the remote controller, and a display function for displaying the current time and hot water supply temperature on the remote controller. Further, there is also a device having a function of displaying the number of remaining days of operation suspension on the remote control when the operation suspension function is set.

[0004] Here, the number of remaining days of operation suspension is obtained by subtracting the number of days elapsed from the number of days of operation suspension set. If the number of days of operation suspension is set to 7 days, the number of remaining days of operation suspension after 5 days has elapsed is 2 days. Becomes

[0005]

However, since the conventional electric water heater always displays some information on the remote controller, it consumes electric power even when it is not necessary and is wasted. In particular, in recent years, fluorescent display tubes that have a high-class feel, have high brightness, and are clearly visible even to the visually impaired have been increasingly used for the display unit, but since they consume more power than liquid crystals, they are used as little as possible. It is an issue to reduce the power consumption during the process, that is, the standby power. In addition, it is kind to avoid displaying the display as much as possible for a user who is disturbed by the display.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to prevent unnecessary power consumption by setting a remote controller to a non-display state when display is not required. It is another object of the present invention to provide a heating device capable of preventing the display from becoming obstructive.

[0007]

In order to achieve the above object, according to the first aspect, a heating unit for heating water with a heater, a main body control unit for controlling the energization of the heating unit, It has a hot water supply detection unit that detects the use of hot water, a clock function unit, a setting unit that consists of switches for setting and operating the hot water temperature, and a display unit that displays the set values and operating conditions set by the setting unit. In a heating device including a remote controller that communicates control information with the main body control unit, when the time measured by the clock function unit is within a predetermined time zone, a switch operation of the setting unit is performed. When not performed, when the hot water supply detection unit does not detect the use of hot water supply and does not receive a detection signal, and when predetermined information is not received from the main body control unit, the display unit is set to the non-display state. Therefore, when the display of the normal remote control is unnecessary at midnight or the like, it is possible to contribute to power saving by turning off the display state,
It does not bother you.

According to a second aspect of the present invention, in the heating apparatus according to the first aspect, the remote controller detects that the hot water supply is used when the switch of the setting unit is operated when the display unit is in the non-display state. When the remote control receives the detection signal or the predetermined information transmitted from the main body control unit, the display unit is temporarily returned to the display state for a predetermined time. Therefore, even if the display is in a non-display state at midnight or the like, when a switch operation of the setting unit is performed, when the hot water supply detection unit detects the use of hot water and receives a detection signal, or when predetermined information is received from the main unit control unit. When the switch is operated to set the hot water temperature, etc., the set value can be confirmed by temporarily returning to the display state for a predetermined time when the hot water temperature is received. When the remote control receives predetermined information to be notified to the user, the information can be confirmed.

According to a third aspect of the present invention, there is provided a heating unit for heating water with a heater, a main body control unit for controlling energization of the heating unit,
Operation consisting of a hot water supply detection unit that detects the use of hot water, a clock function unit, a setting unit that includes a switch for setting and operating the hot water temperature, and a switch that sets the number of days for which power to the heating unit is prohibited. A remote control unit having a pause setting unit and a display unit for displaying a set value and an operation state set by the setting unit and communicating control information with the main unit control unit; If it is, monitor the number of remaining days of operation suspension subtracted from the set number of days elapsed from the set time measured by the clock function unit,
In the heating device controlled by the main body control unit, the number of days of operation suspension is set by the operation suspension setting unit so that the energization to the heating unit is prohibited until the remaining number of days of operation suspension becomes zero. When the number of remaining days is 1 or more (= during suspension of operation), the remote control detects that the hot water supply detection unit does not detect the use of hot water when no switch operation of the setting unit or the operation suspension setting unit is performed. When no signal is received, and when predetermined information is not transmitted from the main body control unit and the remote control does not receive the signal, the display unit is set to a non-display state. Therefore, when operation suspension is set, there is a high possibility that the user usually goes out and is away from home. , It does not bother you.

According to a fourth aspect of the present invention, in the heating device according to the third aspect, the remote controller is configured to switch the hot water supply when a switch operation of the setting unit or the operation stop setting unit is performed when the display unit is in a non-display state. When the detection unit detects the use of hot water and the detection signal is received by the remote controller, or when predetermined information transmitted from the main body control unit is received, the display unit is temporarily returned to the display state for a predetermined time. And Therefore, even if the operation suspension is set and the display is in the non-display state, when the switch operation of the setting unit is performed,
To set the hot water temperature, etc. by temporarily returning to the display state for a predetermined time when the hot water detection unit detects the use of hot water and receives a detection signal, or when predetermined information is received from the main unit control unit, When the switch is operated, the set value and the like can be confirmed. When the hot water is used, the hot water temperature can be confirmed. When the remote controller receives predetermined information to be notified to the user, the information can be confirmed. In claim 5, a heating unit for heating water with a heater,
A main body control unit for controlling the energization of the heating unit, a hot water supply detection unit for detecting hot water use, a setting unit including a switch for setting hot water temperature and operating a function, and a set value set by the setting unit And a remote control for communicating control information with the main body control unit, the display ON / OFF switch for switching the display unit between a display state and a non-display state. Prepared for remote control. Therefore, by operating the display on / off switch of the remote controller, the display state / non-display state can be switched at the convenience of the user.

According to a sixth aspect of the present invention, in the heating device according to the fifth aspect, the remote controller detects that the hot water supply is used when the switch of the setting unit is operated when the display unit is in the non-display state. When detecting and receiving the detection signal, or when receiving predetermined information from the main body control unit, the display unit is temporarily returned to the display state for a predetermined time. Therefore, even if the display is in the non-display state for the convenience of the user, when the switch operation of the setting unit is performed,
To set the hot water temperature, etc. by temporarily returning to the display state for a predetermined time when the hot water detection unit detects the use of hot water and receives a detection signal, or when predetermined information is received from the main unit control unit, When the switch is operated, the set value and the like can be confirmed. When the hot water is used, the hot water temperature can be confirmed. When the remote controller receives predetermined information to be notified to the user, the information can be confirmed.

According to a seventh aspect of the present invention, in the heating device according to the fifth or sixth aspect, the remote controller sets the display on / off switch to “off” when the display unit is temporarily returned to the display state. It was decided to hide it. Therefore,
Even when the display is temporarily returned to the display state, it is possible to make the non-display state without waiting for a predetermined time when the user wants to quickly make the non-display state.

According to an eighth aspect of the present invention, in the heating device according to any one of the fifth to seventh aspects, the remote controller operates the switch of the setting unit when the display unit is in the display state or temporarily returned to the display state. If the setting is being made, the hot water supply detection unit detects the use of hot water and continues to receive the detection signal, or the predetermined information is continuously received from the main body control unit. The on / off switch cannot be turned off. Therefore,
While the setting is being performed by operating the switch of the setting unit, the hot water supply detecting unit detects the use of hot water and continues to receive the detection signal, or continues to receive predetermined information from the main body control unit. In this case, even if the display on / off switch is operated by mistake, it is not possible to turn off the display, so that necessary information can be surely displayed.

According to a ninth aspect, in the heating apparatus according to the first to eighth aspects, when the hot water supply temperature is set to a high temperature in the non-display state, at least the hot water supply temperature or the high temperature is set. Is displayed on the display unit. Therefore, even in the non-display state, it can be confirmed that the hot water supply temperature has been set to a high temperature, so that burns can be prevented.

In claim 10, claim 1 to claim 9.
In the heating device described above, by performing a special operation of the switch of the setting unit, the display unit indicates that the hot water supply temperature and the high temperature are set even when the hot water supply temperature is set to the high temperature in the non-display state. Was not displayed.
Therefore, when the user performs a special operation intentionally, even if the hot water temperature is set to a high temperature, it is possible to prevent the display of the hot water temperature and the fact that the hot water temperature is set, so that the hot water temperature is set to a high temperature. Even if it is set to, all of the display can be turned off so that it is not obstructive and can also contribute to power saving.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration diagram of an electric water heater according to one embodiment of the present invention. First, water from a water supply source is reduced in pressure by a pressure reducing valve 1, and a water supply pipe 2 is provided downstream of the pressure reducing valve 1.
And a bypass pipe 3. The bypass pipe 3 communicates with a downstream hot water supply mixing ratio adjusting valve 46A, and a feed water temperature sensor 41 for detecting a feed water temperature, and a vacuum breaker 51 for canceling a negative pressure when a negative pressure is generated in the pipe such as when water is cut off. It has. The water supply pipe 2 communicates with a heating unit 31. The heating unit 31 includes a hot water storage tank 32 and a lower heater 3.
3. An upper heater 34 is provided. The water in the hot water storage tank 32 is heated by the lower heater 33 and the upper heater 34 so that the lower heater 33 has a high temperature detected by the tank first temperature sensor 37 and the upper heater 34 has a high temperature detected by the third tank temperature sensor 39. Further, a drain valve 36 is provided below the hot water storage tank 32. Further, a safety valve 35 for releasing expansion water generated when the water in the hot water tank 32 is heated is provided at an upper portion of the hot water storage tank 32.

In the hot water mixing ratio adjusting valve 46A driven by the stepping motor, the water from the bypass pipe 3 and the high-temperature water from the high-temperature hot water pipe 4 are mixed, and hot water of an appropriate temperature is supplied to the hot-water pipe 8
Supplied to The hot water supply pipe 8 is provided with a hot water supply temperature sensor 43A for detecting hot water supply temperature and a hot water supply flow rate sensor 44 as hot water supply detection means for detecting supply of hot water to the hot water supply pipe 8. Further, the high-temperature hot water supply pipe 4 is provided with a high-temperature water temperature sensor 42 for detecting the temperature of the high-temperature hot water supplied from the heating unit 31.

The hot water supply pipe 5 branched from the hot water supply pipe 4 communicates with a hot water mixing ratio adjusting valve 46B via a first solenoid valve 22 for starting / stopping the supply of high temperature water. On the other hand, the vacuum breaker 51
The hot water bypass pipe 7 branched downstream of the hot water is connected to a hot water mixing ratio adjusting valve 46B via a second solenoid valve 23 for starting / stopping the supply of water.

In the hot water mixing ratio adjusting valve 46B driven by the stepping motor, the water from the hot water bypass pipe 7 and the high-temperature water from the hot-water high-temperature hot water supply pipe 5 are mixed, and high-temperature water, water, and hot water of the appropriate temperature are mixed. Either is supplied to the hot water supply pipe 9. The hot water supply pipe 9 has a hot water temperature sensor 43B for detecting the hot water temperature and a hot water flow sensor 4 for detecting the flow rate of hot water supplied to the hot water supply pipe 9.
5 and check valve 52,5 to prevent backflow from bathtub 62
3 is provided. The hot water supply pipe 9 further communicates with an adapter 61 attached to the wall surface of the bathtub 62.

The electric water heater 100 is provided with a main controller 70.
It has. The main body control unit 70 detects the remaining hot water amount in the hot water storage tank 32 based on the detected temperatures of the tank first temperature sensor 37, the tank second temperature sensor 38, the tank third temperature sensor 39, and the tank fourth temperature sensor 40. Based on detection signals from the hot water amount detection unit 91, the feed water temperature sensor 41, the hot water temperature sensor 42, the hot water temperature sensor 43 A, the hot water flow sensor 44, the hot water temperature sensor 43 B, the hot water flow sensor 45, and the like, and an operation instruction from the remote controller 71. Hot water mixing ratio adjusting valve 46A and hot water mixing ratio adjusting valve 46B
Hot water supply for controlling the first solenoid valve 22 and the second solenoid valve 23, etc.
A hot water supply control unit 92, a hot water supply detection unit 93 that detects hot water use based on a detection signal of the hot water flow sensor 44, detection signals of the tank first temperature sensor 37 and the tank third temperature sensor 39, and an operation instruction from the remote controller 71. A heater control unit 94 controls the lower heater 33 and the upper heater 34 based on the current time set by the remote controller 71, and a main body communication unit 95 for mutually communicating with the remote controller 71 through the communication line 73.

The remote controller 71 sets a current time and measures the time. The clock function section 201 sets the current time. The current time measured by the clock function section 201 is during the daytime (normally from 7:00 to 23:00).
, The daytime boiling operation unit 202 including a full boiling switch that is turned on when instructing the lower heater 33 to be energized and a small boiling switch that is turned on when instructing the upper heater 34 to be energized; Is set to instruct the heater control unit 94 to prohibit energization of the lower heater 33 and the upper heater 34 for a set number of days, and a set value such as a hot water supply temperature set by the remote controller 71. Display section 204 for displaying operating information such as the remaining hot water amount detected by the hot water supply detecting section 91, a hot water supply temperature setting switch for setting a set temperature of hot water supplied from the hot water supply pipe 8, and setting of hot water to be poured into the bathtub 62. A temperature setting unit 20 having a hot water temperature setting switch for setting a temperature and a boiling temperature setting switch for setting a boiling temperature in the hot water storage tank 32.
5. A hot water switch that is turned on when hot water is supplied to the bathtub 62, a hot water hot water switch that is turned on when hot water is supplied into the bathtub 62, and a hot water switch that is turned on when water is supplied into the bathtub 62 A water heater operation unit 206 including a water switch and a water heater setting switch for setting the amount of hot water to be poured into the bathtub 62, set temperature information set by the temperature setting unit 205 through the communication line 73, and operation of the electric water heater 100. Communication means 208 for mutually communicating information and the like with main body control unit 70
It has.

With the above configuration, when it is recognized that the current time measured by the clock function unit 201 of the remote control 71 is in the night time zone (usually from 23:00 to 7:00 the next day), the main body control unit 70 The heater control unit 94 instructs the lower heater 33 to be energized, and supplies the water in the hot water storage tank 32 to the remote controller 71 using the late-night electric power.
Boil until the boiling set temperature set by the temperature setting unit 205 is detected. When the hot water tap connected from the electric water heater 100 via the external pipe is opened, the hot water in the boiling hot water storage tank 32 is discharged. The temperature of the spouted water can be set by the temperature setting unit 205 according to the application and preference. When the hot water in the hot water storage tank 32 is used for hot water to the bathtub 62, the hot water operating section 20 is used.
6. Turn on the hot water switch. The hot water temperature at this time can be set as desired by the temperature setting unit 205.

When hot water is used in the hot water storage tank 32, water is supplied from the lower part of the hot water storage tank 32 and the amount of remaining hot water decreases. Therefore, the user needs to use the hot water while checking the remaining hot water amount. Therefore, for example, the remaining hot water amount detected by the remaining hot water detecting unit 91 is 300 liters or more, the remaining hot water amount is 150 liters or more and less than 300 liters, and the remaining hot water amount is 100 liters or more and 150 liters.
The remaining hot water amount information, such as less than 1 liter, remaining hot water amount of 50 liters or more and less than 100 liters, and remaining hot water amount of less than 50 liters, is displayed on the display unit 204 of the remote controller 71 as a numerical value or a picture display so that the remaining hot water amount can be confirmed. If the amount of hot water used by a visitor or the like becomes large and the amount of hot water is likely to be short, the water in the hot water storage tank 32 can be heated even in the daytime by turning on the full boiling switch or the small boiling switch. It is like that. If the amount of hot water used by a visitor or the like becomes large and the amount of hot water is likely to be short, the water in the hot water storage tank 32 can be heated even in the daytime by turning on the full boiling switch or the small boiling switch. It is like that.

The electric water heater 100 has an operation stop function for preventing useless boiling when the user is out of the office for a while. Specifically, when the number of days of operation suspension is set by the operation suspension setting unit 203, the heater control unit continues until the set number of days elapses, even if the current time measured by the clock function unit 201 is in the night time zone. A switch 94 instructs not to energize the lower heater 33 and suspends boiling at midnight. Also, the current time measured by the clock function unit 201 increases during the daytime during the daytime, and a switch for increasing the total amount of the operation unit 202 increases. The heater controller 94 instructs the lower heater 33 and the upper heater 34 not to be energized even if the small amount of boiling switch is operated, and suspends the daytime boiling.

When the operation suspension function is set, the number of remaining operation suspension days obtained by subtracting the elapsed days from the set operation suspension days is displayed on the display unit 204. The hot water supply temperature set by the setting unit 205 and the current time measured by the clock function unit 201 are also displayed on the display unit 204.
To be displayed on

Here, a first switching example of the display state / non-display state of the display unit 204 will be described with reference to the flowchart of FIG. The display unit 204 normally includes, for example, as shown in FIG.
The display state is such that the hot water supply temperature set by the setting unit 205 is displayed (step S1). In the display state of step S1, when the current time measured by the clock function unit 201 is in a predetermined time zone (for example, from 0:00 am to 6:00 am) (step S2), the display unit 204 is in a non-display state (step S2). Step S3). In the non-display state in step S3,
When switches such as the setting unit 205 and the hot water operation unit 206 are operated (step S4), the display returns to a temporary display state in which, for example, the hot water supply temperature is displayed for one minute (step S4)
5). When the switch is operated in the temporary display state of step S5 (step S4), the temporary display state is continued (step S5). The switch operation is completed (step S
4) If the current time is still in the predetermined time zone (step S)
2) The non-display state is again set (step S3), and when the current time goes out of the predetermined time zone (step S2), the display state returns to the display state for displaying the hot water supply temperature and the like (step S1).

The condition of the temporary display state in step S5 is that the switch is operated in step S4. However, the hot water supply detecting unit 93 detects the hot water supply and the remote control 71 receives the hot water supply. When the hot water is completed by the hot water control unit 92, the remote controller 71 may receive the hot water and display a message indicating that bathing is possible on the display unit 204. In addition, the time for returning to the temporary display state in step S5 is one minute after the switch is operated when the switch is operated, but may be ten minutes or one hour. When the hot water supply detection is received, the time may be from the start of the hot water supply detection to the end of the hot water supply detection, or one minute after the completion of the hot water supply detection. When the completion of the hot water is received, it may be set to 30 minutes or 1 hour in conjunction with the display indicating that the bathing is possible.

As described above, when the display of the normal remote controller is unnecessary at midnight or the like, the display is set to the non-display state, thereby contributing to power saving and not obstructing. Further, even when the display is in the non-display state, when a switch operation of the setting unit is performed, when the hot water supply detection unit detects the use of hot water and receives a detection signal, or when predetermined control information from the main body control unit is received. By temporarily returning to the display state for a predetermined period of time when received, it is possible to check the set value etc. when the switch is operated to set the hot water temperature, etc., and to check the hot water temperature when using hot water When the remote control receives predetermined control information to be notified to the user, the information can be confirmed.

Next, a second example of switching the display state / non-display state of the display unit 204 will be described with reference to the flowchart of FIG. The display unit 204 is normally in a display state for displaying, for example, the hot water supply temperature set by the setting unit 205 as shown in FIG. 5 (step S11). Step S11
In the display state of, the number of days of operation suspension is set by a switch operation of the operation suspension setting unit 203, and the operation suspension state (operation suspension)
Then, the remaining days of operation suspension are displayed on the display unit 204 as shown in FIG. 6 (step S12), and when a predetermined time elapses after the switch operation, the display unit 204 is in a non-display state (step S13). When switches such as the setting unit 205 and the hot water operation unit 206 are operated in the non-display state in step S3 (step S14), the display returns to a temporary display state in which, for example, the number of remaining days of operation suspension is displayed for one minute (step S14).
15). When the switch is operated in the temporary display state of step S15 (step S14), the temporary display state is continued (step S5). When the switch operation is completed (step S14), if the operation is still suspended (step S1)
2) The non-display state is set again (step S13), and when the suspension of operation is completed (step S12), the display is returned to the display state for displaying the hot water supply temperature and the like (step S11).

The condition for setting the temporary display state in step S15 is that the switch is operated in step S14. However, the condition described in the first switching example may be considered. Further, the time for returning to the temporary display state in step S15 may be the same as the time described in the first switching example.

As described above, when the operation suspension is set, it is highly likely that the user usually goes out and is away from home. Therefore, when the display of such a remote controller is unnecessary, the display is set to the non-display state. In this way, it can contribute to power saving and does not become an obstacle. Further, even when the display is in the non-display state, when a switch operation of the setting unit is performed, when the hot water supply detection unit detects the use of hot water and receives a detection signal, or when predetermined control information from the main body control unit is received. By temporarily returning to the display state for a predetermined period of time when received, it is possible to check the set value etc. when the switch is operated to set the hot water temperature, etc., and to check the hot water temperature when using hot water Can,
Also, when predetermined control information to be notified to the user is received by the remote controller, the information can be confirmed.

Further, a third example of switching between the display state and the non-display state of the display unit 204 will be described with reference to the flowchart of FIG. The display unit 204 is normally in a display state for displaying, for example, the hot water supply temperature set by the setting unit 205 as shown in FIG. 5 (step S21). Step S21
When the display on / off switch 207 is operated to set it to "off" in the display state of (step S22), the display unit 204
A non-display state is set (step S23). Step S23
When the display ON / OFF switch 207 is turned on in the non-display state (step S24), the display returns to the display state for displaying the hot water supply temperature and the like (step S21). When the display on / off switch 207 is not operated in the non-display state in step S24 and a switch such as the setting unit 205 or the hot water operation unit 206 is operated (step S25), a temporary display for displaying, for example, a hot water supply temperature for only one minute is performed. It returns to the state (step S26). When the display on / off switch 207 is operated to be "off" in the temporary display state of step S26 (step S27), the display is turned off again (step S23). In the temporary display state without operating the display on / off switch 207 in step S27, when switches such as the setting unit 205 and the hot water operation unit 206 are operated (step S2).
5) The temporary display state is continued (step S26). If the switch operation is completed in step S25 and the display on / off switch 207 is "off" (step S22), the display is turned off again (step S23), and the display on / off switch 207 is operated to "on" (step S23). S22), returning to the display state for displaying the hot water supply temperature and the like (Step S)
21).

The condition for setting the temporary display state in step S26 is that the switch is operated in step S25, but the case described in the first switching example may be considered. Further, the time during which the temporary display state is set in step S26 may be the same as the time described in the first switching example.

As described above, by operating the display on / off switch of the remote controller, the display state / non-display state can be switched according to the convenience of the user. Even when the display is in the non-display state, when a switch operation of the setting unit is performed, when the hot water supply detection unit detects the use of hot water and receives a detection signal, or when predetermined control information from the main body control unit is received. When the switch is operated to set the hot water temperature etc., the set value etc. can be confirmed by returning the display to the display state temporarily for a predetermined time, and the hot water temperature can be confirmed when hot water is used. When the remote control receives predetermined control information to be notified to the user, the information can be confirmed. Further, even when the display state is temporarily returned to the display state, the non-display state can be quickly set to the non-display state without waiting for a predetermined time.

When returning to the display state of step S21 or the temporary display state of step S26,
When, for example, the number of days of operation suspension is being set by operating switches such as the setting unit 205 and the operation suspension setting unit 203, the hot water supply detection unit 93 detects the use of hot water and the use of hot water is continued, and the detection signal is output. When the remote controller 71 continues to receive, or when predetermined information from the main body control unit 70, for example, the fact that the hot water is completed and that bathing is possible, is continued, the display on / off switch 207 is operated. Even if the display cannot be turned off, the necessary information can be reliably displayed even if the display on / off switch is operated by mistake.

Although the first to third switching examples have been described above, they may be implemented in combination. In addition, as for the display in the non-display state, when the hot water supply temperature is set to the high temperature in the non-display state, only the fact that the high temperature is set is displayed on the display unit as shown in FIG. By doing so, it is possible to confirm that the hot water supply temperature is set to a high temperature even in the non-display state, so that it is possible to prevent burns while reducing the complexity of the display.

Further, in this case, the user determines that there is no danger of burns, and intentionally performs a special operation such as simultaneously pressing two switches of the setting unit 205 for two seconds, thereby setting the non-display state. Even when the hot water temperature is set to a high temperature, if the hot water temperature and the setting of the high temperature are not displayed on the display unit, all the display can be turned off even when the hot water temperature is set to a high temperature. It is not obstructive and can contribute to power saving.

The display section of the remote controller 71 may have various configurations such as a display using a liquid crystal display element or a light emitting diode, in addition to a fluorescent display tube. In this embodiment, the electric water heater is used. However, the present invention can also be applied to a gas or oil water heater, or a combination of a heat pump and a solar water heater.

[Brief description of the drawings]

FIG. 1 is an electric water heater 10 according to an embodiment of the present invention.
Configuration diagram of 0

FIG. 2 is a flowchart illustrating a first switching example of a display state / non-display state of a display unit 204;

FIG. 3 is a flowchart illustrating a second example of switching between a display state and a non-display state of the display unit 204;

FIG. 4 is a flowchart illustrating a third example of switching between a display state and a non-display state of the display unit 204;

FIG. 5 is a display example when the hot water supply temperature is set to a high temperature on the display unit 204.

FIG. 6 is a display example when the operation stop date is set on the display unit 204.

FIG. 7 is a display example of a non-display state of the display unit 204.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Pressure reducing valve 2 ... Water supply pipe 3 ... Bypass pipe 4 ... Hot water supply pipe 5 ... Hot water hot water supply pipe 7 ... Hot water bypass pipe 8 ... Hot water supply pipe 9 ... Hot water supply water supply pipe 22 ... First solenoid valve 23 ... Second Solenoid valve 31 ... Heating part 32 ... Hot water storage tank 33 ... Lower heater 34 ... Upper heater 35 ... Safety valve 36 ... Drain valve 37 ... Tank first temperature sensor 38 ... Tank second temperature sensor 39 ... Tank third temperature sensor 40 ... Tank Four temperature sensors 41: Feed water temperature sensor 42: Hot water temperature sensor 43A: Hot water temperature sensor 43B: Hot water temperature sensor 44: Hot water flow rate sensor 45: Hot water flow rate sensor 46A: Hot water mixing ratio adjusting valve 46B: Hot water mixing ratio adjustment Valve 51 ... Vacuum breaker 52 ... Check valve 53 ... Check valve 61 ... Adapter 62 ... Bathtub 70 ... Body control unit 71 ... Remo 73: communication line 91: remaining hot water amount detection unit 92: hot water supply / hot water control unit 93: hot water supply detection unit 94: heater control unit 95: main body communication means 100: electric water heater 201: clock function unit 202: daytime boiling operation Unit 203: Operation stop setting unit 204: Display unit 205: Setting unit 206: Hot water operation unit 207: Display on / off switch 208: Communication means

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masahiro Imoto 43-1 Uozakihama, Higashinada-ku, Kobe, Hyogo Japan Inside Epro Corporation (72) Inventor Hiroki Kuwahara 43-1 Uozakihama, Higashinada-ku, Kobe, Hyogo Japan Inside (72) Inventor Yoshinori Shichi 431-1 Uozakihama, Higashinada-ku, Kobe-shi, Hyogo Japan Inside Yupro Corporation (72) Inventor Kazuhisa Shimada 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Totoki Equipment (72) Inventor Yoichi Nakamura 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Totoki Co., Ltd.

Claims (10)

[Claims] 1. A heating section for heating water with a heater, a main body control section for controlling energization of the heating section, a hot water supply detection section for detecting hot water supply, a clock function section, and setting and functions of hot water supply temperature. A heating device including a setting unit including a switch for operating and a remote controller having a display unit for displaying a set value and an operation state set by the setting unit and communicating control information with the main body control unit, When the time measured by the clock function unit is in a predetermined time zone, when the switch operation of the setting unit is not performed, the hot water supply detection unit does not detect hot water use and does not receive a detection signal. The heating device, wherein the display unit is set to a non-display state when predetermined information is not received from the main body control unit. 2. The remote controller according to claim 1, wherein when the display section is in a non-display state, a switch operation of the setting section is performed, the hot water supply detection section detects use of hot water, and the remote control receives a detection signal. 2. The heating device according to claim 1, wherein when the predetermined information is received from the main body control unit, the display unit is temporarily returned to the display state for a predetermined time. 3. A heating section for heating water by a heater, a main body control section for controlling energization of the heating section, a hot water supply detecting section for detecting hot water supply, a clock function section, and setting and functions of hot water supply temperature. A setting part comprising a switch for operating, an operation stop setting part comprising a switch for setting the number of days for prohibiting energization to the heating part, and a display part for displaying a set value and an operating state set by the setting part. A remote controller that communicates control information with the main body control unit, and when the number of days of operation suspension is set by the operation suspension setting unit, sets the number of days elapsed from the time set by the clock function unit. In the heating device controlled by the main body control unit, the operation suspension remaining days subtracted from the number of days are monitored, and the energization to the heating unit is prohibited until the operation suspension remaining days becomes zero.
When the number of days of operation suspension is set by the operation suspension setting unit and the number of remaining operation suspension days is 1 or more (= during operation suspension), the remote controller operates the switch of the setting unit or the operation suspension setting unit. If not, the hot water supply detection unit does not detect the use of hot water and does not receive a detection signal, and if the predetermined information is not transmitted from the main body control unit and the remote control does not receive, the display unit is set to a non-display state. A heating device characterized in that: 4. The remote controller according to claim 1, wherein when the display section is in the non-display state, when the switch of the setting section or the operation stop setting section is operated, the hot water supply detection section detects the use of hot water and outputs a detection signal. The heating device according to claim 3, wherein the display unit is temporarily returned to the display state for a predetermined time when a remote control receives the signal or when predetermined information is received from the main body control unit. 5. A heating section for heating water by a heater, a main body control section for controlling energization of the heating section, a hot water supply detecting section for detecting hot water supply, and a function for setting hot water supply temperature and operating a function. In a heating device having a setting unit including a switch and a remote control that has a display unit for displaying a set value and an operation state set by the setting unit and communicates control information with the main body control unit, the display unit displays the display unit. A heating device comprising: a remote control provided with a display on / off switch for switching between a state and a non-display state. 6. The remote controller according to claim 1, wherein when the display section is in a non-display state, a switch operation of the setting section is performed, the hot water supply detecting section detects use of hot water and receives a detection signal, or The heating device according to claim 5, wherein when the predetermined information is received from the control unit, the display unit is temporarily returned to the display state for a predetermined time. 7. The remote controller according to claim 5, wherein when the display section is temporarily returned to the display state, the display on / off switch is turned off to turn off the display section. Heating equipment. 8. The hot water supply detection unit according to claim 1, wherein when the display unit is in the display state or temporarily returned to the display state, the setting is being performed by a switch operation of the setting unit. The display on / off switch cannot be turned off when detecting the use of hot water and continuing to receive the detection signal, or when receiving predetermined information from the main body control unit. The heating device according to any one of claims 5 to 7. 9. When the hot water supply temperature is set to a high temperature in the non-display state, at least the fact that the hot water supply temperature or the high temperature is set is displayed on the display unit. The heating device according to claim 8. 10. A special operation of a switch of the setting section allows the display section to indicate that the hot water supply temperature and the high temperature are set even when the hot water supply temperature is set to a high temperature in the non-display state. 10. The heating device according to claim 9, wherein the display is not displayed.