JP2021055979A - Hot water system and server - Google Patents

Abstract

To provide a hot water system and server capable of surely deleting information (pairing, energy consumption amount, etc.) related to a former user when a new user uses a hot water device due to relocation or the like.SOLUTION: A hot water system 1 includes a hot water device 10 connectable to an external communication network 40, and a server 50 which is connected with the external communication network 40 and controls the hot water device 10 on the basis of request from a mobile terminal device 30. The hot water device 10 includes a display unit 131 for displaying information. The server 50 allows the display unit 131 of the hot water device 10 to display a confirmation window for suggesting possibility of change of the user of the hot water device 10 on the basis of no communication from the hot water device 10 for a prescribed period.SELECTED DRAWING: Figure 1

Description

The present invention relates to a hot water supply system that remotely controls a hot water supply device that can be connected to an external communication network by a mobile terminal device, and a server that manages remote control in the hot water supply system.

Conventionally, in a hot water supply device, various settings have been made by a remote controller installed in a bathroom, a living room, or a kitchen. On the other hand, recently, a system for remotely controlling a hot water supply device using a mobile terminal device such as a mobile phone has been studied. For example, Patent Document 1 below describes a system for remotely controlling a hot water heater using a mobile phone.

Japanese Patent No. 4771846

In the above-mentioned hot water supply system, it is necessary to associate the mobile terminal device for performing remote control and the hot water supply device targeted for remote control with each other. This association (pairing) is managed by the server of the hot water supply system, and is referred to when the mobile terminal device requests remote control from the server. The user can remotely control the hot water supply device only by the mobile terminal device paired with the hot water supply device of the remote control destination. This ensures the security of the user of the water heater.

However, for example, when the user of the water heater changes due to a move or the like, if the pairing of the previous user remains on the server, there is a fear that the water heater will be suddenly remotely controlled by the previous user. To avoid this, new users need to check if the previous user's pairing remains before associating their mobile terminal device with the water heater. However, if this confirmation is forgotten, the previous pairing information will remain as it is, and there is a fear that the water heater will be remotely controlled by the previous user.

Also, when the server manages the amount of water and gas used by the previous user (energy consumption), if this information remains on the server, the amount used by the new user will be the previous use. It is added to the usage amount of the person. If this happens, new users will not be able to accurately grasp their own usage.

In view of such a problem, the present invention more reliably erases information (pairing, energy consumption, etc.) related to the previous user when the new user uses the water heater due to a move or the like. The purpose is to provide a hot water supply system and server capable of providing.

The first aspect of the present invention relates to a hot water supply system. The hot water supply system according to this aspect includes a hot water supply device that can be connected to an external communication network, and a server that is connected to the external communication network and controls the hot water supply device based on a request from a mobile terminal device. The hot water supply device includes a display unit for displaying information. The server displays a confirmation screen on the display unit of the hot water supply device to suggest that the user of the hot water supply device may have changed based on the fact that there has been no communication from the hot water supply device for a predetermined period. Let me.

When a user of a hot water supply device moves, the hot water supply device is usually stopped according to the move, so that communication from the hot water supply device to the server is interrupted for a long period of time after the move. Therefore, if there is no communication from the hot water supply device for a predetermined period, it can be determined that the user of the hot water supply device may have changed due to a move or the like.

According to the hot water supply system according to the first aspect, in such a case, a confirmation screen for suggesting that the user of the hot water supply device may have changed is displayed on the hot water supply device. As a result, a new user of the water heater can grasp that the water heater was previously used by another user by referring to this confirmation screen when moving in. Therefore, the user can more reliably delete the information related to the previous user from the server.

In the hot water supply system according to the first aspect, the confirmation screen may be a screen for inquiring whether or not a change has occurred to the user of the hot water supply device.

According to this configuration, the user is directly inquired whether or not the user of the hot water supply device has been changed. Therefore, the new user can more intuitively understand that the water heater was previously used by another user, and more reliably delete the information related to the previous user from the server. It can be performed.

In the hot water supply system according to the first aspect, the server stores the communication timing from the hot water supply device, and the time difference between the previous communication timing and the current communication timing exceeds the threshold value corresponding to the predetermined period. The confirmation screen may be configured to be displayed on the display unit of the water heater.

Alternatively, the server includes a counter for timekeeping, resets the counter every time there is communication from the hot water supply device, and based on the fact that the count number of the counter reaches the threshold value corresponding to the predetermined period. The confirmation screen may be configured to be displayed on the display unit of the hot water supply device.

In this case, the server may be configured to display the confirmation screen on the display unit of the hot water supply device when there is communication from the hot water supply device after the count number of the counter reaches the threshold value.

According to these configurations, the confirmation screen is displayed on the display unit of the hot water supply device by returning the hot water supply device from the stopped state for a predetermined period or longer to the started state and communicating with the server. As a result, the new user can quickly refer to the confirmation screen when moving in, and can quickly and smoothly delete the user information related to the previous user from the server.

In the hot water supply system according to the first aspect, the server manages predetermined user information in relation to the user of the hot water supply device, and the confirmation screen is an item that accepts an input of whether or not the user information needs to be deleted. The hot water supply device sends a notification regarding the input for the item to the server, and the server deletes the user information for the hot water supply device when the received notification indicates the deletion of the user information. Can be configured as

According to this configuration, the new user can delete the user information of the previous user from the server by inputting the item displayed on the confirmation screen. Therefore, the new user can easily and surely delete the user information of the previous user from the server.

In the hot water supply system according to the first aspect, the server is configured to erase the user information for the hot water supply device based on the fact that the communication from the hot water supply device has not been performed for a longer period than the predetermined period. May be good.

If communication from the water heater is interrupted for a longer period of time, it can be assumed that it is certain that the previous user has moved out due to a move or the like. In the above configuration, in such a case, the user information related to the previous user is automatically deleted from the server, so that the new user does not have to perform any work related to the deletion of the user information. Therefore, the user information related to the previous user can be deleted from the server smoothly and surely.

A second aspect of the present invention relates to a hot water supply system. The hot water supply system according to this aspect includes a hot water supply device that can be connected to an external communication network, and a server that is connected to the external communication network and controls the hot water supply device based on a request from a mobile terminal device. The hot water supply device includes a display unit for displaying information. The server acquires time information from the hot water supply device, and displays a confirmation screen of the hot water supply device for suggesting that the user of the hot water supply device may have changed based on the acquired abnormality of the time information. It is displayed on the display unit.

When a user of a water heater moves, the power supply to the water heater is usually cut off according to the move. As a result, the clock circuit mounted on the hot water supply device is reset, and then when the power is turned on to the hot water supply device when a new user moves in, the clock circuit of the hot water supply device is in a state of waiting for the time to be set by the user. It becomes. In this case, since the time has not yet been set by the user at the timing when the status information is transmitted from the hot water supply device to the server immediately after the power is turned on, the time information transmitted at the time of the communication is the time from the user. Is the information (for example, NULL) according to the reset state before being set. Therefore, if the time information transmitted from the hot water supply device is abnormal information that does not properly include the time, it can be determined that the user of the hot water supply device may have changed due to a move or the like.

According to the hot water supply system according to the second aspect, in such a case, a confirmation screen for suggesting that the user of the hot water supply device may have changed is displayed. As a result, a new user of the water heater can grasp that the water heater was previously used by another user by referring to this confirmation screen when moving in. Therefore, the user can more reliably erase the information related to the previous user from the server.

A third aspect of the present invention relates to a hot water supply system. The hot water supply system according to this aspect includes a hot water supply device that can be connected to an external communication network, and a server that is connected to the external communication network and controls the hot water supply device based on a request from a mobile terminal device. The server manages predetermined user information in relation to the user of the hot water supply device, and deletes the user information for the hot water supply device based on the fact that there is no communication from the hot water supply device for a predetermined period.

According to this aspect, when the communication from the water heater is interrupted for a long period of time and it is highly likely that the previous user of the water heater has moved out, the user information related to the previous user is automatically stored in the server. Is erased from. Therefore, the user information related to the previous user can be deleted from the server smoothly and surely.

A fourth aspect of the present invention relates to a server that controls a hot water supply device connected to an external communication network based on a request from a mobile terminal device. Here, the server displays a confirmation screen on the display unit of the hot water supply device to suggest that the user of the hot water supply device may have changed based on the fact that there has been no communication from the hot water supply device for a predetermined period. Display it.

According to the server according to the fourth aspect, the same effect as that of the first aspect can be achieved.

A fifth aspect of the present invention relates to a server that controls a hot water supply device connected to an external communication network based on a request from a mobile terminal device. Here, the server acquires time information from the hot water supply device, and based on the abnormality of the acquired time information, the server displays a confirmation screen for suggesting that the user of the hot water supply device may have changed. It is displayed on the display unit of the device.

According to the server according to the fifth aspect, the same effect as that of the second aspect can be achieved.

A sixth aspect of the present invention relates to a server that controls a hot water supply device connected to an external communication network based on a request from a mobile terminal device. Here, the server manages predetermined user information in relation to the user of the hot water supply device, and deletes the user information for the hot water supply device based on the fact that there is no communication from the hot water supply device for a predetermined period. ..

According to the server according to the sixth aspect, the same effect as that of the third aspect can be achieved.

As described above, according to the present invention, when a new user uses the water heater due to a move or the like, information (pairing, energy consumption, etc.) related to the previous user is more reliably erased from the server. It is possible to provide a hot water supply system and a server that can be used.

The effects or significance of the present invention will be further clarified by the description of the embodiments shown below. However, the embodiments shown below are merely examples when the present invention is put into practice, and the present invention is not limited to those described in the following embodiments.

FIG. 1 is a diagram showing a configuration of a hot water supply system according to an embodiment. FIG. 2 is a diagram showing circuit blocks of each device constituting the hot water supply system according to the embodiment. FIG. 3A is a flowchart showing a pairing information registration process executed by the server according to the embodiment. FIG. 3B is a diagram showing a configuration of pairing information stored in the storage unit of the server according to the embodiment. FIG. 3C is a diagram showing a configuration of energy usage information stored in the storage unit of the server according to the embodiment. FIG. 4 is a flowchart showing a process for confirming the presence or absence of a user change performed in the control unit of the server according to the embodiment. FIG. 5A is a flowchart showing a process performed by the control unit of the kitchen remote controller in response to the reception of the confirmation notification according to the embodiment. 5 (b) and 5 (c) are diagrams showing the configuration of the confirmation screen according to the embodiment. FIG. 6A is a flowchart showing a process for confirming the presence or absence of a user change performed in the control unit of the server according to the change example 1. FIG. 6B is a circuit block diagram showing a server configuration according to the first modification. FIG. 7 is a flowchart showing a process for confirming the presence / absence of a user change performed in the control unit of the server according to the change example 2. FIG. 8A is a flowchart showing a process for confirming the presence / absence of a user change performed in the control unit of the server according to the change example 3. FIG. 8B is a circuit block diagram showing the configuration of the kitchen remote controller according to the third modification.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a configuration of a hot water supply system 1 according to an embodiment.

As shown in FIG. 1, the hot water supply system 1 includes a hot water supply device 10, a router 20, a mobile terminal device 30, an external communication network 40, and a server 50.

The hot water supply device 10 includes a water heater 11 and remote controllers 12 and 13. The water heater 11 is a gas water heater that supplies hot water using gas as fuel. The hot water generated by the water heater 11 is supplied to the faucet of the kitchen, the bathtub, the curan, etc. via the pipes connected to the hot water supply port 11a. When the water heater 11 has a floor heating function, a bathroom heating function, and a heating function by a panel heater, hot water is supplied from the water heater 11 to a device that realizes these functions.

The remote controllers 12 and 13 are connected to the water heater 11 and are used to make various settings for each function of the water heater 10. The remote controllers 12 and 13 include display units 121 and 131 and input units 122 and 132, respectively. The user can make arbitrary settings for hot water filling, hot water supply temperature control, and the like by operating the input units 122 and 132 according to the screens displayed on the display units 121 and 131. The remote controller 12 is installed in the bathroom, and the remote controller 13 is installed in the kitchen or the like.

Hereinafter, the remote controller 12 installed in the bathroom will be referred to as a "bathroom remote controller 12", and the remote controller 13 installed in the kitchen or the like will be referred to as a "kitchen remote controller 13".

The router 20 is a wireless router for connecting each device existing in the building (here, the home H10) to the server 50 via the external communication network 40. The router 20 is a communication repeater for connecting the kitchen remote controller 13 to the external communication network 40.

The kitchen remote controller 13 is connected to the router 20 by wireless communication. Further, when the mobile terminal device 30 exists in the home H10, the mobile terminal device 30 is connected to the router 20 by wireless communication and can communicate with the server 50. The mobile terminal device 30 is, for example, a mobile phone. In addition, the mobile terminal device 30 may be another portable terminal device such as a portable tablet terminal. The external communication network 40 is, for example, the Internet.

A server 50 for managing remote control (remote control and remote monitoring) of the hot water supply device 10 is connected to the external communication network 40. The kitchen remote controller 13 communicates with the server 50 via the router 20 and the external communication network 40. When the mobile terminal device 30 exists in the home H10, the mobile terminal device 30 communicates with the server 50 via the router 20 and the external communication network 40. When the mobile terminal device 30 is outside the home, the mobile terminal device 30 is connected to the external communication network 40 via a router 60 or a base station 70 installed outside, and communicates with the server 50.

The application program of the hot water supply system 1 is downloaded from the server 50 and installed in the kitchen remote controller 13 and the mobile terminal device 30. This application program includes address information (IP address) for accessing the server 50. The kitchen remote controller 13 and the mobile terminal device 30 access the server 50 and perform communication based on this address information.

The address information of the kitchen remote controller 13 is transmitted to and held by the server 50 at the time of initial setting. At the same time, the ID information (identification information) of the kitchen remote controller 13 is transmitted from the kitchen remote controller 13 to the server 50. As the address information of the kitchen remote controller 13, for example, the MAC (Media Access Control) address held in the wireless communication unit 136 (see FIG. 2) of the kitchen remote controller 13 is used. As the address information of the kitchen remote controller 13, the global IP address of the wireless communication unit 136 of the kitchen remote controller 13 may be used. As the ID information of the kitchen remote controller 13, for example, THING of the wireless communication unit 136 of the kitchen remote controller 13 is used. As the ID information of the kitchen remote controller 13, the MAC address of the wireless communication unit 136 of the kitchen remote controller 13 may be used.

In the configuration of FIG. 1, the user can perform remote control (remote control and remote monitoring) on the hot water supply device 10 by using the mobile terminal device 30 both inside the house H10 and outside the house.

That is, regardless of whether the mobile terminal device 30 is located inside the home H10 or outside the home, the setting request input from the user to the mobile terminal device 30 is once transmitted to the server 50 via the external communication network 40. .. In response to this, the server 50 transmits the received setting request to the hot water supply device 10 previously associated with the mobile terminal device 30 that has received the setting request. As a result, the setting request is transmitted to the kitchen remote controller 13 of the corresponding hot water supply device 10 via the external communication network 40 and the router 20. In this way, the setting of the content requested by the user is applied to the hot water supply device 10 by remote control.

Further, the state information of the hot water supply device 10 is transmitted from the kitchen remote controller 13 to the server 50 via the router 20 at any time in a predetermined cycle. The state information is information indicating the current setting state and operating state of the hot water supply device 10. The state information is shared by the water heater 11, the bathroom remote controller 12, and the kitchen remote controller 13 not only when the hot water supply device 10 is in the operation on state but also when the operation is off, and is transmitted to the server 50 at any time. The server 50 manages the received status information for each hot water supply device 10.

The remote monitoring viewing request input from the user to the mobile terminal device 30 is once transmitted to the server 50 via the external communication network 40. In response to this, the server 50 obtains the state information of the hot water supply device 10 designated by the browsing request among the hot water supply devices 10 previously associated with the mobile terminal device 30 that has received the browsing request. Send to. As a result, the state of the hot water supply device 10 is output to the mobile terminal device 30. In this way, the user can confirm the state of the hot water supply device 10 both inside the house H10 and outside the house.

FIG. 2 is a diagram showing circuit blocks of each device constituting the hot water supply system 1. Note that FIG. 2 shows a state in which the wireless communication unit 305 of the mobile terminal device 30 is connected to the external communication network 40 via the router 20 of the home H10 for convenience. As described above, the mobile terminal is shown. The wireless communication unit 305 of the device 30 may be connected to the external communication network 40 via the router 60 or the base station 70 outside the home.

The water heater 11 includes a control unit 111, a storage unit 112, and a communication unit 113. The control unit 111 includes a microcomputer and controls each unit in the water heater 11 according to a program stored in the storage unit 112. The storage unit 112 includes a memory and stores a predetermined control program. The communication unit 113 communicates with the bathroom remote controller 12 and the kitchen remote controller 13 according to the control from the control unit 111. In addition, the water heater 11 includes a sensor group such as a water level sensor for detecting the water level of the bathtub to which the water heater 10 is connected, a motor for driving each part of the combustor, and a drive circuit thereof.

The bathroom remote controller 12 includes a control unit 123, a storage unit 124, and a communication unit 125, in addition to the display unit 121 and the input unit 122 described above. The display unit 121 is composed of, for example, a liquid crystal panel. The input unit 122 includes various operation buttons such as a temperature setting button. The display unit 121 may be a touch panel.

The control unit 123 includes a microcomputer and performs predetermined control according to a program stored in the storage unit 124. The storage unit 124 includes a memory and stores a predetermined control program. The communication unit 125 communicates with the water heater 11 according to the control from the control unit 123. In addition, the bathroom remote controller 12 includes a motion sensor for detecting the entry and exit of a person into the bathroom, a microphone, a speaker, and the like.

The kitchen remote controller 13 includes a control unit 133, a storage unit 134, and a communication unit 135, in addition to the display unit 131 and the input unit 132 described above. The display unit 131 is composed of, for example, a liquid crystal panel. The input unit 132 includes various operation buttons. The display unit 131 may be a touch panel. The control unit 133 includes a microcomputer and performs predetermined control according to a program stored in the storage unit 134. The storage unit 134 includes a memory and stores a predetermined control program. The communication unit 135 communicates with the water heater 11 according to the control from the control unit 133.

Further, the kitchen remote controller 13 includes a wireless communication unit 136. Here, the wireless communication unit 136 is a wireless communication module capable of wireless communication with the router 20. An IP address for identifying a device on a LAN (Local Area Network) set in the home H10 is assigned to the wireless communication unit 136 (wireless communication module). Further, the wireless communication unit 136 holds the above-mentioned MAC address. In addition, the kitchen remote controller 13 includes a microphone, a speaker, and the like.

The mobile terminal device 30 includes a display unit 301, an input unit 302, a control unit 303, a storage unit 304, and a wireless communication unit 305. The display unit 301 is composed of, for example, a liquid crystal panel. The input unit 132 includes various operation buttons and a touch panel laminated on the display unit 301.

The control unit 303 includes a CPU (Central Processing Unit) and performs predetermined control according to a program stored in the storage unit 304. The storage unit 304 includes a memory and stores a predetermined control program. The wireless communication unit 305 communicates with the router 20 according to the control from the control unit 303. The wireless communication unit 305 is a wireless communication module capable of wireless communication with the router 20. An IP address is also assigned to the wireless communication unit 305. Further, the wireless communication unit 305 holds the above-mentioned MAC address. In addition, the mobile terminal device 30 includes a speaker for outputting audio.

The server 50 includes a control unit 501, a storage unit 502, and a communication unit 503. The control unit 501 includes a CPU and performs predetermined control according to a program stored in the storage unit 502. The storage unit 502 includes a memory and a hard disk, and stores a predetermined control program and database. The communication unit 503 performs predetermined control according to the control from the control unit 501.

In the present embodiment, the mobile terminal device 30 capable of remotely controlling (remote control and remote monitoring) the hot water supply device 10 is registered in the server 50 in association with the hot water supply device 10. That is, the hot water supply device 10 and the mobile terminal device 30 are paired in advance, and information indicating pairing (pairing information) is managed by the server 50. Specifically, the ID information of the hot water supply device 10 and the ID information and the address information of the mobile terminal device 30 are associated with each other to form pairing information. The ID information and address information of the mobile terminal device 30 registered as pairing information are, for example, the MAC address and THING of the wireless communication unit of the mobile terminal device 30.

In the present embodiment, this pairing is performed in the building where the hot water supply device 10 is installed. That is, in principle, the owner of the mobile terminal device 30 cannot pair his / her own mobile terminal device 30 with the hot water supply device 10 unless he / she has the mobile terminal device 30 in the building where the hot water supply device 10 is installed. .. This reduces the possibility that the mobile terminal device 30 and the hot water supply device 10 are unfairly paired by a malicious third party. Therefore, the risk of improper remote control (remote control and remote monitoring) can be suppressed.

For example, the pairing of the mobile terminal device 30 and the hot water supply device 10 is performed by the following procedure.

First, the user activates the application program of the hot water supply system 1 installed in the mobile terminal device 30 in the home H10, and sets the mobile terminal device 30 in the pairing mode. After that, the operator performs an operation for pairing with the input unit 132 of the kitchen remote controller 13. As a result, the announcement for pairing is broadcasted from the kitchen remote controller 13 by the UDP protocol. When the mobile terminal device 30 is in the home H10, this announcement is received by the mobile terminal device 30.

Upon receiving this announcement, the mobile terminal device 30 causes the display unit 301 to display a reception screen for accepting the pairing operation. The operator performs an operation for pairing on this reception screen. As a result, the pairing request is unicast-transmitted from the mobile terminal device 30 to the kitchen remote controller 13 by the TCP protocol. The pairing request includes the ID information of the mobile terminal device 30 and the address information (MAC address).

When this pairing request is received by the kitchen remote controller 13, the display unit 131 of the kitchen remote controller 13 displays a reception screen for accepting the approval of pairing. When the user performs an operation to approve the pairing on the reception screen, the pairing response is transmitted from the kitchen remote controller 13 to the mobile terminal device 30 by the TCP protocol. This pairing response includes the ID information of the kitchen remote controller 13.

In this way, when the mobile terminal device 30 receives the pairing response from the kitchen remote controller 13, the mobile terminal device 30 transmits the pairing request to the server 50. This pairing request includes the ID information and address information of the mobile terminal device 30, and the ID information of the kitchen remote controller 13 received from the kitchen remote controller 13 in the previous process. In this way, a pairing request including information necessary for pairing is transmitted to the server 50.

FIG. 3A is a flowchart showing a pairing information registration process executed by the server 50.

When the control unit 501 of the server 50 receives the pairing request from the mobile terminal device 30 (S1: YES), the ID information and address information of the mobile terminal device 30 included in the pairing request and the ID of the kitchen remote controller 13 The information is associated with each other and stored in the storage unit 502 (S2). When the registration of the pairing information is completed in this way, the control unit 501 transmits the pairing completion notification to the mobile terminal device 30 which is the transmission destination of the pairing request (S3). As a result, the processing on the server 50 is completed. The mobile terminal device 30 that has received the pairing completion notification displays the pairing completion screen on the display unit 301. As a result, the user knows that the pairing has been registered.

FIG. 3B is a diagram showing a configuration of pairing information stored in the storage unit 502 of the server 50.

As shown in FIG. 3B, the ID information and address information of the mobile terminal device 30 paired with the hot water supply device 10 are associated with the ID information of the hot water supply device 10 (kitchen remote controller 13), and the server It is stored and managed in the storage unit 502 of 50. In the example of FIG. 3B, n mobile terminal devices 30 are paired with one hot water supply device 10. The storage unit 502 stores and manages such pairing information for each hot water supply device 10.

By registering the pairing information in the server 50 as described above, the mobile terminal device 30 capable of remotely controlling the hot water supply device 10 is limited to the mobile terminal device 30 whose ID information is included in the pairing information. .. As a result, the security of the user of the hot water supply device 10 is ensured.

However, for example, when the user of the hot water supply device 10 changes due to a move or the like, if the pairing of the previous user remains on the server 50, the previous user may suddenly control the hot water supply device 10 remotely. There is.

Further, in the present embodiment, the server 50 manages the usage amount (energy usage information) of water, gas, etc. used by the user of the hot water supply device 10 in addition to the pairing information. In this case, for example, as shown in FIG. 3C, the amount of water, gas, etc. used (energy usage information) used in each water heater 10 corresponds to the ID information of the water heater 10 (kitchen remote controller 13). It is attached and stored in the storage unit 502. The state information transmitted from the kitchen remote controller 13 to the server 50 includes energy usage information (water and gas usage). The control unit 501 of the server 50 integrates each usage amount included in the received energy information for each hot water supply device 10 and stores it in the storage unit 502.

In this case, if the energy usage information of the previous user remains on the server 50, the usage amount by the new user will be added to the usage amount of the previous user. When this happens, the new user cannot accurately grasp his / her own usage amount.

Therefore, in the present embodiment, when a new user uses the hot water supply device 10 due to a move or the like, information related to the previous user (pairing information, energy usage information, etc.) is more reliably deleted from the server 50. The hot water supply system 1 is provided with a configuration for this purpose. This configuration will be described below.

FIG. 4 is a flowchart showing a process for confirming the presence or absence of a user change performed by the control unit 501 of the server 50.

When there is communication from the kitchen remote controller 13 (S11), the control unit 501 of the server 50 calculates the time difference ΔT between the reference time and the current time (S12). Here, the reference time is the time when there was a communication from the kitchen remote controller 13 last time. The current time and the reference time are acquired by a clock circuit built in the server 50. Alternatively, when the time measured by the clock circuit built in the kitchen remote controller 13 is transmitted to the server 50 at each communication, the current time and the reference time may be acquired from this time.

When the kitchen remote controller 13 first communicates with the server 50 after the kitchen remote controller 13 is installed, the reference time is not yet stored in the storage unit 502 of the server 50. In this case, the control unit 501 sets the time difference ΔT calculated in step S12 to zero.

Next, the control unit 501 determines whether or not the calculated time difference ΔT exceeds the threshold value Tth1 (S13). Here, the threshold value Tth1 is set to a length at which it is possible that the reason why there is no communication during the period of the threshold value Tth1 is due to the relocation of the user. When the user moves to another place, the power supply to the water heater 10 is usually cut off. Therefore, the communication from the kitchen remote controller 13 to the control unit 501 is interrupted according to the move. Therefore, if there is no communication from the kitchen remote controller 13 for a certain period of time or longer, it is possible that the user has moved to another place. The threshold value Tth1 is set to a period during which it is possible that the user has moved to another place in this way. For example, the threshold value Tth1 is set to about one month.

When the time difference ΔT is equal to or less than the threshold value Tth1 (S13: NO), the control unit 501 updates the reference time to the current time (S17), and repeats the processes after step S11. On the other hand, when the time difference ΔT exceeds the threshold value Tth1 (S13: YES), the control unit 501 executes a process for confirming whether or not the user of the hot water supply device 10 has changed (S14). Specifically, the control unit 501 sends a confirmation notice for displaying a confirmation screen for confirming whether or not the user of the hot water supply device 10 has changed on the display unit 131 of the kitchen remote controller 13. Send to.

FIG. 5A is a flowchart showing a process performed by the control unit 133 of the kitchen remote controller 13 in response to the reception of the confirmation notification.

When the control unit 133 of the kitchen remote controller 13 receives the confirmation notification from the server 50 (S21: YES), the control unit 133 causes the display unit 131 to display the confirmation screen 601 (S22).

5 (b) and 5 (c) are views showing the configuration of the confirmation screen 601.

In step S22, the control unit 133 first causes the display unit 131 to display the confirmation screen 601 of FIG. 5B. The confirmation screen 601 includes a message 601a inquiring whether or not the user of the hot water supply device 10 has been changed, and operation items 601b and 601c for answering the inquiry.

When the user changes due to a move or the like, the new mover first refers to message 601a and grasps that another user was using the hot water supply device 10 before moving in. Then, the new user operates the operation item 601b via the input unit 132 in response to the inquiry of the message 601a. As a result, the control unit 133 switches the screen of the display unit 131 to the confirmation screen 602 shown in FIG. 5 (c).

The confirmation screen 602 includes a message 602a inquiring whether or not the user information managed by the server 50 may be deleted, and operation items 602b and 602c for answering the inquiry. The new user operates the operation item 602b via the input unit 132 in response to the inquiry of the message 601a. As a result, the control unit 133 sets the determination in step S23 of FIG. 5A to YES, and transmits a response notification indicating that the user information can be erased to the server 50 (S24). As a result, the control unit 133 ends the process.

On the other hand, when the user has not changed, for example, when the power supply of the hot water supply device 10 is temporarily cut off for a period exceeding the threshold value Th1 due to a long-term trip or the like, the user can see the confirmation screen of FIG. 5 (b). The operation item 601c is operated on the screen of 601. As a result, the control unit 133 sets the determination in step S23 of FIG. 5A to NO, and transmits a response notification indicating that the user information cannot be erased to the server 50 (S25). As a result, the control unit 133 ends the process.

If the user has not changed and the operation item 601b is erroneously operated on the confirmation screen 601 of FIG. 5 (b), the user switches to the operation item on the confirmation screen 602 of FIG. 5 (c) thereafter. Operate 602c. As a result, the control unit 133 returns the screen to the confirmation screen 601 of FIG. 5 (b). The user operates the operation item 601c on the confirmation screen 601. As a result, the control unit 133 sets the determination in step S23 of FIG. 5A to NO, and transmits a response notification indicating that the user information cannot be erased to the server 50 (S25). As a result, the control unit 133 ends the process.

Returning to FIG. 4, upon receiving the response notification from the kitchen remote controller 13, the control unit 501 of the server 50 determines whether or not the response notification indicates that the user information can be erased (S15). ). When the response notification indicates that the user information can be deleted (S15: YES), the control unit 501 deletes the user information associated with the hot water supply device 10 (S16). Here, the user information is user information associated with the hot water supply device 10, and includes, for example, pairing information shown in FIG. 3B and energy usage information shown in FIG. 3C. Then, the control unit 501 advances the process to step S17 to update the reference time, further returns the process to step S11, and executes the same process.

On the other hand, when the response notification indicates that the user information cannot be erased (S15: NO), the control unit 501 updates the reference time to the current time (S17), and repeats the processes after step S11. In this case, the user information is continuously maintained in the server 50, and the control based on the user information is continued.

The control unit 501 may display on the display unit 131 of the kitchen remote controller 13 that the existing user information has been deleted in step S16. As a result, the new user can grasp that the user information of the previous user has been deleted, and can smoothly proceed with the subsequent setting operation such as the pairing registration operation.

<Effect of embodiment>
According to this embodiment, the following effects can be achieved.

Confirmation screen 601 for confirming whether or not the user of the hot water supply device 10 has changed based on the fact that the communication from the hot water supply device 10 (kitchen remote controller 13) to the server 50 has not occurred for a predetermined period (threshold value Tth1). 602 is displayed. As a result, a new user of the hot water supply device 10 can grasp that the hot water supply device 10 has been used by another user before by referring to the confirmation screens 601 and 602 at the time of moving in. Therefore, the user can more reliably delete the user information related to the previous user from the server 50.

As shown in FIG. 4, the server 50 stores the communication timing (reference time) from the hot water supply device 10 (S17), and between the previous communication timing (reference time) and the current communication timing (current time). When the time difference ΔT of the above exceeds the threshold value Tth1 indicating the possibility of moving (S13: YES), the confirmation screens 601 and 602 are displayed on the display unit 131 of the hot water supply device 10 (kitchen remote controller 13) (S14). As a result, the hot water supply device 10 returns from the stopped state for a predetermined period (threshold value Tth1) or more to the activated state and communicates with the server 50, so that the confirmation screen 601 is displayed on the display unit 131 of the hot water supply device 10 (kitchen remote controller 13). 602 is displayed. Therefore, the new user can quickly refer to the confirmation screens 601 and 602 when moving in, and can quickly and smoothly delete the user information related to the previous user from the server 50.

As shown in FIG. 5B, the confirmation screen 602 includes operation items 602b and 602c that accept input of whether or not the user information needs to be deleted. Further, in the process of FIG. 5A, the hot water supply device 10 (kitchen remote controller 13) transmits a response notification regarding the input to the operation items 602b and 602c to the server 50 (S24, S25). Then, in the process of FIG. 4, when the received response notification indicates the deletion of the user information (S15: YES), the server 50 deletes the user information for the hot water supply device 10 (S16). As a result, the new user can delete the user information of the previous user from the server 50 simply by inputting the operation items 602b and 602c displayed on the confirmation screen 602 after confirming the confirmation screen 601. Therefore, the new user can easily and surely delete the user information of the previous user from the server 50.

In FIGS. 5 (b) and 5 (c), the confirmation screens 601 and 602 are displayed in two stages, but one confirmation screen is inquired about a message inquiring about the change of the user and whether or not the user information needs to be deleted. It may include a message and an operation item that accepts the necessity of erasing the user information. In this case as well, the response notification corresponding to the input operation item is transmitted from the kitchen remote controller 13 to the server 50.

<Change example 1>
In the above embodiment, the timing (reference time) of communication from the kitchen remote controller 13 is stored in the server 50 at any time, and is confirmed when the time difference ΔT between the previous communication timing and the current communication timing exceeds the threshold value Tth1. The screens 601 and 602 were displayed on the display unit 131 of the kitchen remote controller 13. On the other hand, in the first modification, the server 50 is provided with a counter 501a for timing, and the counter 501a of the server 50 is reset every time there is communication from the kitchen remote controller 13. Then, the server 50 displays the confirmation screens 601 and 602 on the display unit 131 of the hot water supply device 10 (kitchen remote controller 13) based on the fact that the count number of the counter 501a reaches the threshold value C1 corresponding to the period indicating the possibility of moving. To display.

FIG. 6A is a flowchart showing a process for confirming the presence or absence of a user change performed by the control unit 501 of the server 50 according to the change example 1. FIG. 6B is a circuit block diagram showing the configuration of the server 50 according to the first modification.

As shown in FIG. 6B, the control unit 501 of the server 50 is provided with the function of the counter 501a for timing.

In the flowchart of FIG. 6A, steps S12, S13, and S17 of the flowchart of FIG. 4 are replaced with steps S31, S32, and S33, respectively. The processing of steps S11 and S14 to S16 is the same as the corresponding step of FIG.

When there is communication from the kitchen remote controller 13 (S11: YES), the control unit 501 of the server 50 refers to the count value of the counter 501a (S31). Here, the counter 501a is reset to zero every time there is communication from the kitchen remote controller 13 by the process of step S33, and starts counting up according to the time.

When the kitchen remote controller 13 first communicates with the server 50 after the kitchen remote controller 13 is installed, the counter 501a is not activated. In this case, the control unit 501 sets the count value in step S31 to zero.

Next, the control unit 501 determines whether or not the count number of the counter 501a has reached the threshold value C1 corresponding to the period indicating the possibility of moving (S32). The setting concept of the threshold value C1 is the same as the setting concept of the threshold value Tth1 in step S13 of FIG. The threshold value C1 is set to a count number corresponding to a period of about one month.

When the count number of the counter 501a has not reached the threshold value C1 (S32: NO), the control unit 501 resets the counter 501a (S33) and repeats the processes after step S11. On the other hand, when the count number of the counter 501a has reached the threshold value C1 (S32: YES), the control unit 501 executes a process for confirming whether or not the user of the hot water supply device 10 has changed (S32: YES). S14). The processing after step S14 is the same as in FIG. As a result, the confirmation screens 601 and 602 of FIGS. 5 (b) and 5 (c) are displayed on the display unit 131 of the kitchen remote controller 13, and the necessity of erasing the user information is inquired.

The counter 501a may be a down counter whose count value decreases according to the time. In this case, the threshold value C1 in step S32 is set as the initial value, and in step S33, the counter 501a is set to this initial value. Further, in step S32, it is determined whether or not the count value of the counter 501a is zero.

Also in the first modification, as in the above embodiment, the new user of the hot water supply device 10 has previously used the hot water supply device 10 by another user by referring to the confirmation screens 601 and 602 at the time of moving in. I can understand that. Therefore, the user can more reliably delete the user information related to the previous user from the server 50.

Further, when the server 50 receives communication from the hot water supply device 10 (kitchen remote controller 13) after the count number of the counter 501a reaches the threshold value C1 (S11: YES), the server 50 displays the confirmation screens 601 and 602 on the hot water supply device 10 (s). It is displayed on the display unit 301 of the kitchen remote controller 13). As a result, the hot water supply device 10 returns from the stopped state for a predetermined period or longer to the activated state and communicates with the server 50, so that the confirmation screens 601 and 602 are displayed on the display unit 131 of the hot water supply device 10 (kitchen remote controller 13). To. Therefore, the new user can quickly refer to the confirmation screens 601 and 601 when moving in, and can quickly and smoothly delete the user information related to the previous user from the server 50.

<Change example 2>
In the above embodiment, the timing (reference time) of communication from the kitchen remote controller 13 is stored in the server 50 at any time, and is confirmed when the time difference ΔT between the previous communication timing and the current communication timing exceeds the threshold value Tth1. The screen 601 was displayed on the display unit 131 of the kitchen remote controller 13. On the other hand, in the second modification, when the time difference ΔT exceeds the threshold value Tth2, which is longer than the threshold value Tth1, the user information is automatically deleted from the server 50 without displaying the confirmation screens 601 and 602.

FIG. 7 is a flowchart showing a process for confirming the presence or absence of a user change performed by the control unit 501 of the server 50 according to the change example 2.

In the flowchart of FIG. 7, step S41 is added to the flowchart of FIG. The steps other than step S41 are the same as the flowchart of FIG. In FIG. 7, steps S11 and S12 are omitted for convenience.

When the time difference ΔT exceeds the threshold value Tth1 (S13: YES), the control unit 501 of the server 50 further determines whether or not the time difference ΔT exceeds the threshold value Tth2 (S41). The threshold Tth2 is longer than the threshold Tth1. The threshold value Tth2 is set to a period during which it is assumed that the reason for the interruption of communication is due to the relocation of the user. The threshold Tth2 is set to, for example, half a year or one year.

When the time difference ΔT exceeds the threshold value Tth2 (S41: YES), the control unit 501 erases the user information associated with the hot water supply device 10 from the storage unit 502 without performing the confirmation process (S14). (S16). On the other hand, when the time difference ΔT does not exceed the threshold value Tth2 (S41: NO), the control unit 501 advances the process to step S14 and executes the same process as that of the above embodiment.

If the communication from the hot water supply device 10 (kitchen remote controller 13) is interrupted for a longer period of time, it can be assumed that it is certain that the previous user has moved out due to a move or the like. In the configuration of the second modification, in such a case, the user information related to the previous user is automatically deleted from the server 50, so that the new user does not particularly perform the work related to the deletion of the user information. You can. Therefore, according to the configuration of the second modification, the user information related to the previous user can be smoothly and surely deleted from the server 50.

In FIG. 7, when the time difference ΔT is between the threshold value Tth1 and the threshold value Tth2, the first process of displaying the confirmation screens 601 and 602 is executed, and when the time difference ΔT exceeds the threshold value Tth2, the user from the server 50. Although the second process of erasing the information has been executed, only the second process may be executed regardless of the first process.

Further, the user may be able to select whether or not to perform the second process. As a result, if the user is absent for a long period of time without changing the user, such as when he / she is assigned overseas or when the hot water supply device 10 is installed in the villa, the user makes a mistake by setting not to perform the second process. Therefore, it is possible to prevent the user information from being deleted from the server 50.

Further, in the second modification, the same configuration as that of the first modification may be applied. In this case, when the count number of the counter 501a reaches the count number corresponding to the threshold value Tth2, the process of deleting the user information associated with the hot water supply device 10 from the server 50 is executed.

<Change example 3>
In the above embodiment, it is determined that the user of the hot water supply device 10 may have changed based on the period (time difference ΔT) when there is no communication from the hot water supply device 10 (kitchen remote controller 13). On the other hand, in the change example 3, it is determined that the user of the hot water supply device 10 may have changed based on whether or not the time information acquired from the hot water supply device 10 (kitchen remote controller 13) is in an abnormal state. To.

FIG. 8A is a flowchart showing a process for confirming the presence or absence of a user change performed by the control unit 501 of the server 50 according to the change example 3. FIG. 8B is a circuit block diagram showing the configuration of the kitchen remote controller 13 according to the third modification.

In the flowchart of FIG. 8A, steps S12, S13, and S17 in the flowchart of FIG. 4 are replaced with steps S51, S52, and S53. The steps other than steps S51, S52, and S53 are the same as the flowchart of FIG.

As shown in FIG. 8B, the control unit 133 of the kitchen remote controller 13 is provided with the function of the clock unit 133a. For convenience, in FIG. 8B, the configurations of the kitchen remote controller 13 other than the control unit 133 and the wireless communication unit 136 are not shown.

When communicating with the server 50, the control unit 133 always transmits the time of the clock unit 133a to the server 50. The clock unit 133a receives the setting of the current time from the user after the power is turned on. The user operates the input unit 132 while referring to the display unit 131 to set the current time in the kitchen remote controller 13. As a result, the clock unit 133a starts timing with the set current time as the starting point. When communication (for example, transmission of state information immediately after power supply) is performed without the user setting the current time, the control unit 133 transmits NULL as time information to the server 50.

With reference to FIG. 8A, when the control unit 501 of the server 50 receives a communication from the kitchen remote controller 13 (S11: YES), the time of the hot water supply device 10 (kitchen remote controller 13) included in the communication (S11: YES) Hereinafter, “water heater time Ts”) is extracted (S51), and it is determined whether or not the extracted water heater time Ts is in an abnormal state (S52).

When the user of the hot water supply device 10 moves, the power supply to the hot water supply device 10 is usually cut off according to the move. As a result, the clock circuit (clock unit 133a in FIG. 8B) mounted on the hot water supply device 10 (kitchen remote controller 13) is reset, and then the power is turned on to the hot water supply device 10 when a new user moves in. Then, the clock unit 133a of the hot water supply device 10 (kitchen remote controller 13) is in a state of waiting for the time to be set by the user.

In this case, immediately after the power is turned on, the hot water supply device 10 transmits the status information indicating the current setting contents to the server 50. However, at this timing, since the time has not yet been set in the kitchen remote controller 13 by the new user, the time information (water heater time Ts) transmitted to the server 50 is before the time is set by the user. The information (for example, NULL) corresponds to the reset state of. Therefore, if the time information (water heater time Ts) transmitted from the hot water supply device 10 is abnormal information that does not properly include the time, it is possible that the user of the hot water supply device 10 has changed due to a move or the like. I can judge.

Therefore, when the received water heater time Ts is NULL information that does not include the time, the control unit 501 sets the determination in step S52 to YES and executes the confirmation process in step S14. On the other hand, when the received water heater time Ts includes the time, the control unit 501 sets the determination in step S52 to NO, and the water heater time Ts stored in the storage unit 502 is newly acquired from the kitchen remote controller 13. Rewrite to time Ts.

It is preferable that the determination in step S52 further includes, as an AND condition, that the appropriate water heater time Ts including the time has been acquired in the previous communication. As a result, the determination in step S52 is YES only when there is a user of the hot water supply device 10 before. That is, by adding this condition, when the power is supplied after the hot water supply device 10 is installed and the first communication is performed from the kitchen remote controller 13 to the server 50, the NULL water heater does not include the time. Even if the time Ts is transmitted from the kitchen remote controller 13 to the server 50, the determination in step S52 is not YES. Therefore, in such a case, it is possible to prevent the confirmation screens 601 and 602 from being displayed on the display unit 131 of the kitchen remote controller 13.

<Other changes>
In the above embodiment, as a confirmation screen suggesting the possibility that the user of the hot water supply device 10 has changed, as shown in FIG. 5B, whether or not the user of the hot water supply device 10 has changed is used. A confirmation screen 601 for inquiring a person is displayed, but the displayed confirmation screen is not limited to this. For example, as a confirmation screen suggesting that the user of the water heater 10 may have changed, a screen asking whether the user has been absent for a long period of time may be displayed, or the water heater 10 may be used for a long period of time. A screen may be displayed that includes a message asking why it was not used and candidate items for that reason.

If a screen asking if the user has been away for a long period of time is displayed as a confirmation screen, the new user can know that the user was previously present by this screen, and for this screen, Select the "No" operation item. As a result, the confirmation screen 602 of FIG. 5C is displayed, and the new user performs the same operation as in the above embodiment on the confirmation screen 602. By this operation, the determination in step S23 in FIG. 5 becomes YES. If there is no change in the user, the user selects the "Yes" operation item for this screen. As a result, the determination in step S23 in FIG. 5 becomes NO.

When a screen including a message asking why the water heater 10 has not been used for a long period of time and a selection item for the reason is displayed, the new user selects, for example, a candidate item for "moving". As a result, the determination in step S23 in FIG. 5 becomes YES. If there is no change in the user, the user selects, for example, a candidate item of "long-term absence due to travel, etc." on this screen. As a result, the determination in step S23 in FIG. 5 becomes NO.

Further, in the above embodiment, the wireless communication unit 136 is provided in the kitchen remote controller 13 constituting the hot water supply device 10, but the wireless communication unit may be provided in the water heater 11 and the water heater 11 may be connected to the router 20. .. In this case, the control by the kitchen remote controller 13 in the above embodiment is performed by the control unit 111 of the water heater 11.

Alternatively, a control unit provided with a wireless communication unit other than the water heater 11, the bathroom remote controller 12, and the kitchen remote controller 13 may be arranged in the hot water supply device 10, and the control unit may be connected to the router 20. In this case, the control by the kitchen remote controller 13 in the above embodiment is performed by the control unit of the control unit.

Further, in the above embodiment, pairing information and energy usage information are exemplified as examples of user information, but information other than these may be included in the user information. Also in this case, all the user information associated with the hot water supply device 10 is deleted from the server 50 by the process of step S16 or the like in FIG.

The terminal device for remotely controlling the hot water supply device 10 may include a stationary terminal device that is not portable and is installed at a predetermined place.

In addition, various modifications of the embodiment of the present invention can be made as appropriate within the scope of the claims.

1 Hot water supply system 10 Hot water supply device 13 Kitchen remote controller 30 Mobile terminal device 40 External communication network 50 Server 131 Display unit 501 Control unit 502 Storage unit 601 and 602 Confirmation screen 602b Operation items

Claims (12)

A water heater that can be connected to an external communication network,
In a hot water supply system including a server connected to the external communication network and controlling the hot water supply device based on a request from a mobile terminal device.
The hot water supply device includes a display unit for displaying information.
The server displays a confirmation screen on the display unit of the hot water supply device to suggest that the user of the hot water supply device may have changed based on the fact that there has been no communication from the hot water supply device for a predetermined period. Let,
A hot water supply system that features this. In the hot water supply system according to claim 1,
The confirmation screen is a screen for inquiring whether or not a change has occurred to the user of the hot water supply device.
A hot water supply device characterized by this. In the hot water supply system according to claim 1 or 2.
The server stores the communication timing from the hot water supply device, and when the time difference between the previous communication timing and the current communication timing exceeds the threshold value corresponding to the predetermined period, the confirmation screen is displayed on the hot water supply device. Displayed on the display unit,
A hot water supply system that features this. In the hot water supply system according to claim 1 or 2.
The server includes a counter for timekeeping, resets the counter every time there is communication from the hot water supply device, and the confirmation screen is based on the fact that the count number of the counter reaches the threshold value corresponding to the predetermined period. Is displayed on the display unit of the hot water supply device.
A hot water supply system that features this. In the hot water supply system according to claim 4,
The server displays the confirmation screen on the display unit of the hot water supply device when there is communication from the hot water supply device after the count number of the counter reaches the threshold value.
A hot water supply system that features this. In the hot water supply system according to any one of claims 1 to 5,
The server manages predetermined user information in relation to the user of the hot water supply device.
The confirmation screen includes an item for accepting an input as to whether or not the user information needs to be deleted.
The water heater transmits a notification regarding the input to the item to the server.
When the received notification indicates the deletion of the user information, the server deletes the user information for the hot water supply device.
A hot water supply system that features this. In the hot water supply system according to claim 6,
The server deletes the user information for the hot water supply device based on the fact that the communication from the hot water supply device has not been performed for a longer period than the predetermined period.
A hot water supply system that features this. A water heater that can be connected to an external communication network,
In a hot water supply system including a server connected to the external communication network and controlling the hot water supply device based on a request from a mobile terminal device.
The hot water supply device includes a display unit for displaying information.
The server acquires time information from the hot water supply device, and displays a confirmation screen of the hot water supply device for suggesting that the user of the hot water supply device may have changed based on the acquired abnormality of the time information. Displayed on the display unit,
A hot water supply system that features this. A water heater that can be connected to an external communication network,
In a hot water supply system including a server connected to the external communication network and controlling the hot water supply device based on a request from a mobile terminal device.
The server
Manages predetermined user information related to the user of the water heater,
The user information for the hot water supply device is deleted based on the fact that there is no communication from the hot water supply device for a predetermined period.
A hot water supply system that features this. A server that controls a hot water supply device connected to an external communication network based on a request from a mobile terminal device.
A confirmation screen for suggesting that the user of the hot water supply device may have changed based on the absence of communication from the hot water supply device for a predetermined period is displayed on the display unit of the hot water supply device.
A server that features that. A server that controls a hot water supply device connected to an external communication network based on a request from a mobile terminal device.
A confirmation screen for acquiring time information from the water heater and suggesting that the user of the water heater may have changed based on the abnormality of the acquired time information is displayed on the display unit of the water heater. Display,
A server that features that. A server that controls a hot water supply device connected to an external communication network based on a request from a mobile terminal device.
Manages predetermined user information related to the user of the water heater,
The user information for the hot water supply device is deleted based on the fact that there is no communication from the hot water supply device for a predetermined period.
A server that features that.

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