JP5713835B2 - Water heater - Google Patents

Description

  The present invention relates to a hot water supply apparatus provided with a backup battery for power failure.

  Conventionally, in a water heater equipped with a water heater main body and a remote controller for remotely operating the water heater main body, a rechargeable battery is incorporated in the water heater main body, and the battery is used as a backup power source in the event of a power failure. There has been proposed a hot water supply apparatus that can perform hot water supply and renewal (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 6-14855

  As a specification of a remote controller for a hot water supply apparatus, a configuration in which a hot water supply apparatus main body and a remote control are connected by a communication cable, and power is supplied from the hot water supply apparatus main body to the remote control via the communication cable.

  And in a hot water supply device equipped with a remote controller of this specification, when a battery is provided as a power failure backup power source in the hot water supply device main body, the output power of the battery incorporated in the hot water supply device main body when the power failure occurs in the commercial power supply Will be supplied to. For this reason, as the power consumption of the remote control during a power failure increases, the battery consumption increases and the hot water supply possible time by the hot water supply apparatus main body is shortened.

  This invention is made | formed in view of this background, and it aims at providing the hot water supply apparatus which can reduce the power consumption of the remote control during a power failure, and can lengthen the hot water supply possible time during a power failure.

  The present invention has been made to achieve the above object, and is connected to a battery, a commercial power source, and the battery. When power is supplied from the commercial power source, the power supplied from the commercial power source is used. When the power supply from the commercial power supply is stopped, the power supply circuit that outputs the second power based on the power supplied from the battery, and the first power supplied from the power supply circuit Electric power supplied from the hot water supply device main body via the communication cable, having a hot water supply device body operated by one electric power or the second electric power, and having a display unit and an operation unit, connected to the hot water supply device main body by a communication cable And a plurality of remote controllers that remotely operate the hot water supply device main body, and a remote controller that has been subjected to the priority setting operation according to a predetermined priority setting operation on each remote controller. With the configuration of the hot water supply temperature from the apparatus main body is the priority mode capable, the other remote control to an improvement of the water heater equipped with a remote control priority setting unit to the non-priority mode settings are disabled in fed-water temperature.

  Then, when a power failure detection unit that detects a power failure of the commercial power source, and a power failure of the commercial power source is detected by the power failure detection unit, and any one of the plurality of remote controllers is in the priority mode, Only for the remote control in the priority mode, the first display including the operating state of the hot water supply apparatus main body is displayed on the display unit, and for the other remote control in the non-priority mode, the display is more than the first display. A remote control display limiting unit that causes the display unit to display a second display with less information and less power consumption for display than the first display is provided (first invention).

  According to the first invention, when the commercial power supply is out of power, only the remote controller in the priority mode performs the first display on the display unit by the remote control display restriction unit, and the non-priority mode is set. The other remote controller performs the second display, which consumes less power than the first display. In this way, by limiting the remote control that performs the first display to the remote control that is set to the priority mode and is assumed to have a high frequency of operation by the user, all of the remote controls are ensured while ensuring the user's convenience. Compared with the case where the first display is performed on the remote controller, it is possible to reduce the total power supplied from the hot water supply apparatus main body to each remote controller. Therefore, the discharge power of the battery can be reduced, and the hot water supply possible time of the hot water supply apparatus body during a power failure of the commercial power supply can be lengthened.

  Further, in the first invention, each remote controller prohibits acceptance of operations other than the priority setting operation when the remote control is in the non-priority mode during a power failure of the commercial power supply (second invention). ).

  According to the second invention, for the remote control that is in the non-priority mode, by prohibiting the acceptance of operations other than the priority setting operation while enabling the switching of the remote control that performs hot water supply temperature by the priority setting operation, It is possible to reduce power consumption accompanying processing for accepting operations.

  In the first or second aspect of the invention, when the remote control is in the non-priority mode during a power failure of the commercial power supply, the remote controller performs a display for notifying that the power failure is occurring on the display unit. Features (third invention).

  According to the third aspect of the present invention, it is possible to prevent a user who has visually recognized the non-priority mode remote control performing the second display from misidentifying that the hot water supply device has failed.

  Further, in any one of the first to third inventions, the remote control includes a sound notification unit for performing notification by sound, and when the commercial power supply is in a power failure, the upper limit output of the sound notification unit is It is characterized in that it is reduced as compared to when no commercial power failure occurs (fourth invention).

  According to the fourth invention, when the commercial power supply is in a power failure, the upper limit output of the sound notification unit of the remote control is reduced compared to when the commercial power supply is not out of power, thereby reducing the sound output. Therefore, it is possible to reduce the output power of the battery and to increase the hot water supply possible time by the hot water supply apparatus main body.

The block diagram of the hot-water supply apparatus of this invention. The operation | movement flowchart (1/2) of the controller of the hot-water supply apparatus main body shown in FIG. The operation | movement flowchart (2/2) of the controller of the hot-water supply apparatus main body shown in FIG. The 1st block diagram of the hot-water supply apparatus which employ | adopted the uninterruptible power supply. The 2nd block diagram of the hot-water supply apparatus which employ | adopted the uninterruptible power supply.

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

  With reference to FIG. 1, the hot water supply apparatus of this embodiment is comprised by the hot water supply apparatus main body 1, and the bathroom remote control 40 and the kitchen remote control 50 for operating the hot water supply apparatus main body 1 remotely. Furthermore, it is also possible to connect the additional remote controller 60 to the hot water supply apparatus main body 1. The water heater main body 1 and the bathroom remote controller 40, the kitchen remote controller 50, and the additional remote controller 60 are connected by communication cables 20-22.

  The hot water supply device main body 1 heats water supplied to a water supply pipe (not shown) by circulating it in a heat exchanger heated by gas or kerosene burner or the like, and discharges the hot water to a hot water supply pipe (not shown). . The hot water supply apparatus main body 1 includes a power supply circuit 30 and a controller 10 that is operated by electric power supplied from the power supply circuit 30 and controls the operation of the hot water supply apparatus main body 1.

  The power supply circuit 30 is connected to a commercial power supply 34 (for example, AC100V commercial power supply) and a battery 35 (for example, a DC12V storage battery), and AC power output from the commercial power supply 34 is converted to DC power P1 (first power of the present invention). , A selection circuit 32, and a power failure detection circuit 33 that detects a power failure of the commercial power supply 34.

  When power is supplied from the rectifier circuit 31, the selection circuit 32 outputs the power P1 from the rectifier circuit 31. When the power supply from the rectifier circuit 31 is stopped due to a power failure of the commercial power supply 34, the selection circuit 32 outputs the power P2 from the battery 35 (corresponding to the second power of the present invention).

  The battery 35 is a storage battery (secondary battery) and is charged with electric power supplied from the commercial power supply 34. A primary battery may be used for the battery 35. The power failure detection circuit 33 outputs a power failure detection signal to the controller 10 when detecting a power failure of the commercial power supply 34. The controller 10 recognizes the power failure of the commercial power supply 34 by receiving this power failure detection signal.

  The controller 10 supplies power supplied from the power supply circuit 30 as operating power for the bathroom remote controller 40, the kitchen remote controller 50, and the additional remote controller 60 via the communication cables 20 to 22.

  The controller 10, the bathroom remote controller 40, the kitchen remote controller 50, and the additional remote controller 60 perform bidirectional communication by power supply superimposition communication via the communication cables 20 to 22. The bathroom remote controller 40, the kitchen remote controller 50, and the additional remote controller 60 are provided with display units 41, 51, 61, various switches such as operation switches 42, 52, 62 (corresponding to the operation unit of the present invention), voice, and the like. Speakers 43, 53, and 63 (corresponding to the sound notification unit of the present invention) for output are provided.

  The operation switches 42, 52, 62 are capable of hot water supply operation of the hot water supply device, enable the operation of the switch portion of each remote controller, and display the operation status of the hot water supply device body 1 on the display portions 41, 51, 61. And a standby mode in which the hot water supply operation is impossible, the operation other than the operation of the operation switches 42, 52, 62 of the operation unit of each remote controller is disabled, and the display units 41, 51, 61 are turned off. It is a switch for instructing the switching of.

  The operation switch 42 has a built-in LED 42a that is turned on when in the operation mode. Similarly, the operation switch 52 has a built-in LED 52a, and the operation switch 62 has a built-in LED 62a.

  The bathroom remote controller 40 also includes a priority switch 45 for switching the bathroom remote controller 40 between the priority mode and the non-priority mode. The priority mode is a mode in which a hot water supply temperature setting operation of the hot water supply apparatus body 1 can be performed in preference to other remote controllers, and the non-priority mode is a mode in which a hot water supply temperature setting operation is not possible.

  When the bathroom remote control 40 is in the priority mode, the user can set the hot water supply temperature of the hot water supply apparatus body 1 by operating a temperature setting switch (not shown) of the bathroom remote control 40. On the other hand, when the bathroom remote controller 40 is in the non-priority mode, the user cannot set the hot water supply temperature with the bathroom remote controller 40.

  The priority switch 45 incorporates an LED 45a. The LED 45a is turned on when the bathroom remote control 40 is in the priority mode, and the LED 45a is turned off when the bathroom remote control 40 is in the non-priority mode.

  Moreover, although the kitchen remote controller 50 and the additional remote controller 60 are not provided with a priority switch, the user can set the kitchen remote controller 50 and the additional remote controller 60 to the priority mode by operating the operation switches 52 and 62.

  For example, when the bathroom remote controller 40 is in the priority mode, the user operates the operation switch 52 of the kitchen remote controller 50 to set the hot water supply device to the standby mode, and then operates the operation switch 52 again to switch the hot water supply device. When the operation mode is set, the kitchen remote controller 50 becomes the priority mode, and the bathroom remote controller 40 becomes the non-priority mode.

  Similarly, the extension remote controller 60 can be set to the priority mode by operating the operation switch 62, and the bathroom remote controller 40 can also be set to the priority mode by operating the operation switch 42.

  In this way, the operation for setting the priority mode by the operation switch 42 and the priority switch 45 of the bathroom remote controller 40, the operation switch 52 of the kitchen remote controller 50, and the operation switch 62 of the additional remote controller 60 corresponds to the priority setting operation of the present invention. To do.

  The bathroom remote controller 40, the kitchen remote controller 50, and the additional remote controller 60 transmit an operation status signal indicating the operation status of each switch of the operation unit to the controller 10. In addition, the bathroom remote controller 40, the kitchen remote controller 50, and the additional remote controller 60 control the display of the display units 41, 51, 61 in accordance with the display control signal transmitted from the controller 10.

  The bathroom remote controller 40 includes a microcomputer 44, and the microcomputer 44 controls the operation of the bathroom remote controller 40. Similarly, the operation of the kitchen remote controller 50 is controlled by the microcomputer 54, and the operation of the additional remote controller 60 is controlled by the microcomputer 64.

  The controller 10 is an electronic circuit unit configured by a CPU, a memory, an input / output interface, etc. (not shown), and controls the hot water supply operation of the hot water supply device by executing a control program for the hot water supply device held in the memory by the CPU. Depending on the operation of the remote controller 40, 50, or 60, the remote controller 40, 50, 60 is operated in accordance with the operation of the hot water supply controller 11, the power failure detection signal received from the power failure detection circuit 33 and detecting the power failure of the commercial power supply 34. In the priority mode, the remote controller priority setting unit 13 that sets the other remote controller to the non-priority mode, and when the commercial power supply 34 has a power failure, the display of the remote controller in the non-priority mode is limited, It functions as a remote control display limiting unit 14 for saving power.

  Hereinafter, according to the flowchart shown in FIG.2 and FIG.3, the process in the hot-water supply apparatus main body 1, the bathroom remote control 40, and the kitchen remote control 50 at the time of the power failure of the commercial power supply 34 is demonstrated.

  2 to 3 show processing by the controller 10 of the hot water supply apparatus body 1. The controller 10 is activated when power supply from the power supply circuit 30 is started, and starts power supply to the bathroom remote controller 40 and the kitchen remote controller 50 via the communication cables 20 and 21.

  With this power supply, the microcomputer 44 of the bathroom remote controller 40 and the microcomputer 54 of the kitchen remote controller 50 are activated, and the controller 10 and the bathroom remote controller 40 and the kitchen remote controller 50 start bidirectional communication at a predetermined timing.

  The controller 10 sets the hot water supply device in the standby mode in STEP1. In subsequent STEP 2, the controller 10 transmits a control signal for turning off the display of the display units 41 and 51 (no display) to the bathroom remote controller 40 and the kitchen remote controller 50.

  The microcomputer 44 of the bathroom remote control 40 that has received this control signal turns off the display unit 41. Similarly, the microcomputer 54 of the kitchen remote controller 50 turns off the display unit 51.

  In next STEP 3, the controller 10 determines whether or not the operation switch 52 of the kitchen remote controller 50 is ON. When the operation switch 52 is ON, the process branches to STEP 12 in FIG. 3, and when the operation switch 52 is not ON, the process proceeds to STEP4.

  In STEP 4, the controller 10 determines whether or not the operation switch 42 of the bathroom remote control 40 is ON. When the operation switch 42 is ON, the process proceeds to STEP5, and when the operation switch 42 is not ON, the process returns to STEP3.

  In STEP 5, the controller 10 sets the hot water supply device to the operation mode, and in STEP 6, the controller 10 transmits an “operation lamp lighting signal” to the bathroom remote controller 40 and the kitchen remote controller 50. In response to the reception of the “operation lamp lighting signal”, the microcomputer 44 of the bathroom remote control 40 lights the built-in LED 42 a of the operation switch 42. Further, the microcomputer 54 of the kitchen remote controller 50 turns on the built-in LED 52a of the operation switch 52.

  The next STEP 7 is processing by the remote control priority setting unit 13. The remote controller priority setting unit 13 sets the bathroom remote controller 40 that has been switched to the operation mode by the operation switch 42 to the priority mode, and sets the kitchen remote controller 50 to the non-priority mode.

  The remote controller priority setting unit 13 transmits a “priority mode setting signal” to the bathroom remote controller 40, and the microcomputer 44 of the bathroom remote controller 40 that has received this “priority mode setting signal” lights the built-in LED 45a of the priority switch 45. Then, the bathroom remote controller 40 is operated in the priority mode.

  The remote controller priority setting unit 13 transmits a “non-priority mode setting signal” to the kitchen remote controller 50, and the microcomputer 54 of the kitchen remote controller 50 that has received this “non-priority mode setting signal” is in the priority mode. The priority display on the display unit 51 indicating that the remote control is turned off is turned off, and the kitchen remote controller 50 is operated in the non-priority mode.

  The subsequent STEP 8 is processing by the power failure detection unit 12. The power failure detection unit 12 determines whether or not the commercial power source 34 is in a power outage depending on whether or not a power failure detection signal is input from the power failure detection circuit 33. If the commercial power supply 34 is in a power failure, the process branches to STEP 30, and if the commercial power supply 34 is not in a power failure, the process proceeds to STEP9.

  In STEP 9, the controller 10 transmits a “normal display permission signal” to the bathroom remote controller 40 and the kitchen remote controller 50. Receiving this “normal display permission signal”, the microcomputer 44 of the bathroom remote control 40 performs a first display including a display of the operating state of the hot water supply apparatus 1 (burner combustion, hot water temperature, etc.) on the display unit 41. Similarly, the microcomputer 54 of the kitchen remote controller 50 that has received the “normal display permission signal” performs the first display on the display unit 51.

  In subsequent STEP 10, the controller 10 determines whether or not the operation switch 42 of the bathroom remote controller 40 or the operation switch 52 of the kitchen remote controller 50 is ON. And when the operation switch 42 or the operation switch 52 is ON, it branches to STEP1, and sets a hot-water supply apparatus to standby mode.

  When neither the operation switch 42 nor the operation switch 52 is ON, the process proceeds to STEP 11 and the controller 10 determines whether or not the priority switch 45 of the bathroom remote control 40 is ON. When the priority switch 45 is ON, the process proceeds to STEP 14 in FIG. 3, where the kitchen remote controller 50 is set to the priority mode and the bathroom remote controller 40 is set to the non-priority mode.

  On the other hand, when the priority switch 42 is not turned on, the process returns to STEP 7. In this case, the state where the bathroom remote controller 40 is set to the priority mode and the kitchen remote controller 50 is set to the non-priority mode is maintained.

  STEP 30 to STEP 31 are processes performed by the remote control display restriction unit 14. The remote control display restricting unit 14 transmits a “power saving display signal” to the kitchen remote control 50 in STEP 30. The microcomputer 54 of the kitchen remote controller 50 that has received this “power saving display signal” reduces the display items on the display unit 51 to be lower than the first display by limiting the display items to a high temperature warning lamp or the like. The power consumption is reduced from the first display to obtain the second display.

  In the next STEP 31, the remote control display restriction unit 14 transmits a “normal display permission signal” to the bathroom remote control 40. The microcomputer 44 of the bathroom remote controller 40 that has received this “normal display permission signal” performs the first display on the display unit 41.

  By the processing of STEP30 to STEP31, the remote controller that performs the first display is limited to the bathroom remote controller 40 set to the priority mode, and the other remote controllers (the kitchen remote controller 50 in this embodiment) are consumed more than the first display. By performing the second display with less power, the total power supplied from the controller 10 to each remote controller can be reduced compared to when performing the first display in all remote controllers.

  Therefore, the output power of the battery 35 can be reduced, and the hot water supply possible time of the hot water supply apparatus main body 1 during the power failure of the commercial power supply 34 can be lengthened.

  In subsequent STEP 32, the controller 10 transmits a “power failure display signal” to the bathroom remote controller 40 and the kitchen remote controller 50 and proceeds to STEP 10. The microcomputer 44 of the bathroom remote control 40 that has received the “power failure display signal” displays on the display unit 41 a notification that the commercial power source 34 is in a power failure. Similarly, the microcomputer 54 of the kitchen remote controller 50 that has received the “power failure display signal” displays on the display unit 51 a notification that the commercial power source 34 is in a power failure state.

  These displays allow the user to recognize that the display on the display unit 51 of the kitchen remote controller 50 is limited to the second display due to a power failure of the commercial power supply 34. If the display is different from the normal first display, the user is prevented from misidentifying.

  Next, when the operation switch 52 of the kitchen remote controller 50 is turned ON, the controller 10 sets the hot water supply device to the operation mode in STEP 12 of FIG. 3 branched from YES to STEP 3, and in STEP 13, the controller 10 controls the bathroom remote controller 40 and the kitchen remote controller 40. An “operation lamp lighting signal” is transmitted to the remote controller 50.

  In response to the reception of the “operation lamp lighting signal”, the microcomputer 44 of the bathroom remote control 40 lights the built-in LED 42 a of the operation switch 42. Further, the microcomputer 54 of the kitchen remote controller 50 turns on the built-in LED 52a of the operation switch 52.

  The next STEP 14 is processing by the remote control priority setting unit 13. The remote controller priority setting unit 13 sets the kitchen remote controller 50 that has been switched to the operation mode by the operation switch 52 to the priority mode, and sets the bathroom remote controller 40 to the non-priority mode.

  The remote controller priority setting unit 13 transmits a “priority mode setting signal” to the kitchen remote controller 40, and the microcomputer 54 of the kitchen remote controller 50 that has received this “priority mode setting signal” enters the priority mode on the display unit 51. The priority display indicating that the remote controller 50 is turned on is turned on to operate the kitchen remote controller 50 in the priority mode.

  The remote controller priority setting unit 13 transmits a “non-priority mode setting signal” to the bathroom remote controller 40, and the microcomputer 44 of the bathroom remote controller 40 that has received this “non-priority mode setting signal” sets the priority switch 45. The built-in LED 45a is turned off and the bathroom remote controller 40 is operated in the non-priority mode.

  The following STEP 15 is processing by the power failure detection unit 12. The power failure detection unit 12 determines whether or not the commercial power source 34 is in a power outage depending on whether or not a power failure detection signal is input from the power failure detection circuit 33. If the commercial power supply 34 is in a power failure, the process branches to STEP 40. If the commercial power supply 34 is not in a power failure, the process proceeds to STEP16.

  In STEP 16, the controller 10 transmits a “normal display permission signal” to the bathroom remote controller 40 and the kitchen remote controller 50. The microcomputer 44 of the bathroom remote controller 40 that has received this “normal display permission signal” performs the first display on the display unit 41. Similarly, the microcomputer 54 of the kitchen remote controller 50 that has received the “normal display permission signal” performs the first display on the display unit 51.

  In subsequent STEP 17, the controller 10 determines whether or not the operation switch 42 of the bathroom remote controller 40 or the operation switch 52 of the kitchen remote controller 50 is ON. And when the operation switch 42 or the operation switch 52 is ON, it branches to STEP1 of FIG. 2, and sets a hot-water supply apparatus to standby mode.

  When neither the operation switch 42 nor the operation switch 52 is ON, the process proceeds to STEP 18 and the controller 10 determines whether or not the priority switch 45 of the bathroom remote control 40 is ON. When the priority switch 45 is ON, the process proceeds to STEP 7 in FIG. 2, where the bathroom remote controller 40 is set to the priority mode and the kitchen remote controller 50 is set to the non-priority mode.

  On the other hand, when the priority switch 45 is not ON, the process returns to STEP 14, and in this case, the state where the kitchen remote controller 50 is set to the priority mode and the bathroom remote controller 40 is set to the non-priority mode is maintained.

  STEP 40 to STEP 41 are processes performed by the remote control display restriction unit 14. The remote control display restriction unit 14 transmits a “power saving display signal” to the bathroom remote control 40 in STEP 40. The microcomputer 44 of the bathroom remote control 40 that has received this “power saving display signal” sets the display on the display unit 41 as the second display described above.

  In the next STEP 41, the remote control display restriction unit 14 transmits a “normal display permission signal” to the kitchen remote control 50. The microcomputer 54 of the kitchen remote controller 50 that has received this “normal display permission signal” performs the first display described above on the display unit 51.

  By the processing of STEP 40 to STEP 41, the remote controller that performs the first display is limited to the kitchen remote controller 50 set in the priority mode, and the other remote controllers (the bathroom remote controller 40 in this embodiment) are consumed more than the first display. By performing the second display with less power, the total power supplied from the controller 10 to each remote controller can be reduced compared to when performing the first display in all remote controllers.

  Therefore, the output power of the battery 35 can be reduced, and the hot water supply possible time of the hot water supply apparatus main body 1 during the power failure of the commercial power supply 34 can be lengthened.

  In subsequent STEP 42, the controller 10 transmits a “power failure display signal” to the bathroom remote controller 40 and the kitchen remote controller 50 as in STEP 32 of FIG. 2, and proceeds to STEP 17.

  In addition, when the commercial power supply 34 is in a power failure, the upper limit of the output of the speaker 43 of the bathroom remote control 40 and the speaker 53 of the kitchen remote control 50 is set lower than when the power failure of the commercial power supply 34 does not occur. The power consumption of the bathroom remote controller 40 and the kitchen remote controller 50 may be further reduced.

  Next, FIG. 4 shows another configuration example that employs the uninterruptible power supply 70 for backup of power failure. When the commercial power supply 34 fails, AC power is obtained from the output power of the battery built in the uninterruptible power supply 70. It produces | generates and supplies alternating current power Pac to the hot-water supply apparatus main body 1a also at the time of a power failure. Note that the power failure detection unit 12a and the power supply circuit 80 are different from the above-described hot water supply apparatus in FIG. 1, and the same components are denoted by the same reference numerals and description thereof is omitted.

  The water heater main body 1a includes a power supply circuit 80 that rectifies AC power Pac supplied from the uninterruptible power supply 70 and outputs DC power Pdc, and the controller 10a operates with the DC power Pdc supplied from the power supply circuit 80. .

  The power failure detection circuit 71 provided in the uninterruptible power supply 70 is connected to the power failure detection terminal 90 and outputs a power failure detection signal Pfs to the power failure detection terminal 90. The power failure detection terminal 90 is connected to the controller 10a by the communication cable 23 and relays the power failure detection signal Pfs to the controller 10a. The communication specifications with the communication cable 23 are the same as the communication specifications with the bathroom remote controller 40 and the kitchen remote controller 50 with the communication cables 20 and 21.

  And the power failure detection part 12a of the controller 10a detects the power failure of the commercial power source 34 by the presence or absence of reception of the power failure detection signal Pfs output from the power failure detection circuit 71 of the uninterruptible power supply 70. According to the configuration of FIG. 4, the configuration for detecting a power failure of the commercial power supply 34 is diverted from the power failure detection circuit 71 provided in the uninterruptible power supply 70, and the interface by the communication cable 23 and the power failure detection terminal 90 is used. Can be easily configured.

  Next, FIG. 5 is a configuration in which a connection interface (connection connector + interface circuit) 55 to the power failure detection circuit 71 of the uninterruptible power supply 70 is provided in the kitchen remote controller 50a in the configuration of FIG. In the case of this configuration, the power failure detection terminal 90 and the communication cable 23 of FIG. 4 can be dispensed with.

  5 shows the kitchen remote controller 50a provided with the connection interface 55 with the power failure detection circuit 71 of the uninterruptible power supply 70, the bathroom remote controller 40 or the extension remote controller 60 (see FIG. 1) includes the connection interface 55. It is good also as a structure.

  In the present embodiment, the display unit 41 of the bathroom remote controller 40 and the display unit 51 of the kitchen remote controller 50 when the commercial power supply 34 is in a power failure state by the process of STEP 32 of FIG. 2 and the process of STEP 42 of FIG. Although the display notifying that a power failure is occurring is performed, the effect of the present invention can be obtained even when this display is not performed.

  DESCRIPTION OF SYMBOLS 1 ... Hot water supply apparatus main body, 10 ... Controller, 11 ... Hot water supply control part, 12 ... Power failure detection part, 13 ... Remote control priority setting part, 14 ... Remote control display restriction part, 30 ... Power supply circuit, 31 ... Rectification circuit, 32 ... Selection circuit 33 ... Power failure detection circuit 34 ... Commercial power supply 35 ... Battery 20-22 Communication cable 40 ... Bathroom remote control 41 ... Display unit 42 ... Operation switch 43 ... Speaker 44 ... Microcomputer 45 ... Priority Switch, 50 ... Kitchen remote control, 51 ... Display, 52 ... Operation switch, 53 ... Speaker, 54 ... Microcomputer.

Claims (4)

Battery,
When the commercial power source and the battery are connected and power is supplied from the commercial power source, the first power based on the power supplied from the commercial power source is output, and the power supply from the commercial power source is stopped. A power supply circuit that outputs a second power based on the power supplied from the battery;
A hot water supply device main body that operates by the first power or the second power supplied from the power supply circuit;
The hot water supply device main body having a display unit and an operation unit is connected to the hot water supply device main body via a communication cable, and is operated by electric power supplied from the hot water supply device main body via the communication cable to remotely operate the hot water supply device main body. A remote control,
In accordance with a predetermined priority setting operation on each remote controller, the remote controller on which the priority setting operation is performed is set to a priority mode in which the hot water supply temperature from the hot water supply apparatus main body can be set, and other remote controllers are set to the hot water supply temperature. In a hot water supply apparatus equipped with a remote control priority setting unit that makes the non-priority mode impossible
A power failure detection unit for detecting a commercial power failure,
When a power failure of the commercial power source is detected by the power failure detection unit, and any one of the plurality of remote controllers is in the priority mode, only the remote controller in the priority mode is The first display including the operating state is displayed on the display unit, and the other remote control in the non-priority mode has less display information than the first display and consumes less power for display than the first display. A hot water supply apparatus, comprising: a remote control display limiting unit that causes the display unit to display a small number of second displays. The hot water supply apparatus according to claim 1,
Each remote controller prohibits acceptance of operations other than the priority setting operation when the remote control is in the non-priority mode during a power failure of the commercial power source. In the hot water supply apparatus according to claim 1 or claim 2,
Each said remote control performs the display which alert | reports that it is in the power failure on the said display part, when it is in the said non-priority mode during the power failure of the said commercial power supply. In the hot-water supply apparatus in any one of Claims 1-3,
The remote control includes a sound notification unit that performs sound notification, and when the commercial power source is in a power outage, the upper limit output of the sound notification unit is reduced compared to when the commercial power source is not out of power. Hot water supply device characterized by

Images