JP2021050892A - Bath hot water supply device - Google Patents

Abstract

To provide a bath hot water supply device which can perform washing processing of a reheating piping part easily and appropriately, while suppressing increase in manufacturing cost.SOLUTION: A bath hot water supply device WH includes a control part 7, a data input part 72, and notification means SP, 73, and it can set a control part 7 to a washing mode of a reheating piping part 5 utilizing the data input part 72. When the washing mode is set, the control part 7 executes a notification operation for urging a user to input a detergent into a bathtub 1 by utilizing the notification means SP, 73, after setting a state in which an automatic drain plug 11 of the bathtub 1 is closed and hot water is stored by a predetermined water level in the bathtub 1, and corresponding to this notification operation, when there is a response using the data input part 72 to the effect that the detergent is inputted, the control part feeds the hot water in the bathtub 1 into the reheating piping part 5 and executes the washing processing of the reheating piping part 5.SELECTED DRAWING: Figure 1

Description

The present invention relates to a bath water heater capable of filling and reheating a bathtub.

The bath hot water supply device capable of reheating operation is provided with a reheating piping section for circulating and circulating hot water between the heating section of the bath hot water supply device and the bathtub. The use of the bath water heater may cause stains inside and make it unsanitary.
Therefore, conventionally, the actual situation is that the user purchases a commercially available detergent for cleaning pipes and cleans the reheating pipe portion according to the procedure described in the package of this detergent or the like.
However, according to such means, it is necessary for the user to perform the work of storing hot water in the bathtub, the work of adding detergent to the collected hot water, and other work while checking the procedure described on the package etc. one by one. There are cases where the procedure is difficult to understand. Therefore, it is desired that such a problem be appropriately resolved.

As a means for solving the above-mentioned problems, it is conceivable to fully automate the cleaning process of the reheating piping portion. However, if such a means is adopted, the manufacturing cost of the bath water heater becomes high, and the financial burden on the user increases.

Japanese Patent No. 6022095 Jikkenhei 4-56469 Gazette

The present invention has been conceived under the above-mentioned circumstances, and is capable of easily and appropriately cleaning the reheating piping portion while suppressing an increase in manufacturing cost. The challenge is to provide the equipment.

In order to solve the above problems, the following technical measures are taken in the present invention.

The bath hot water supply device provided by the first aspect of the present invention executes and controls the hot water supply operation to the bathtub using the hot water supply piping section and the hot water reheating operation of the bathtub using the reheating piping section. A bath hot water supply device including a possible control means, a data input unit capable of inputting data to the control means, and a notification means capable of notifying information, and by controlling the control means. An automatic drain plug that can freely open and close the drain port of the bathtub is further provided, and the control means can be set to the cleaning mode of the reheating piping section by using the data input section. When the cleaning mode is set, the control means sets the automatic drain plug to a closed state and a state in which hot water is stored in the bathtub at a predetermined water level, and then puts detergent into the bathtub. When the notification operation for prompting the user is executed by using the notification means and the data input unit is used in response to the notification operation and the response that the detergent has been added is used, the bathtub It is characterized in that hot water is sent to the reheating piping portion to perform a cleaning process of the reheating piping portion.

According to such a configuration, the following effects can be obtained.
That is, when the user sets the cleaning mode of the reheating piping unit using the data input unit, hot water is stored in the bathtub at a predetermined water level under the control of the control means, and preparations for adding detergent are made. To. When this preparatory work is completed, a notification operation for prompting the detergent to be added is performed at that time, so that the user may add the detergent according to the notification content and respond to that effect using the data input unit. After that, under the control of the control means, the cleaning process of the reheating piping portion using the detergent is executed. As described above, according to the above configuration, it is possible to perform so-called semi-automatic cleaning of the reheating piping portion, which is complicated except that the user puts in detergent and responds to that effect by using the data input unit. No work is required. In addition, the user can easily determine at what timing the detergent is added. Therefore, it is convenient because the user does not have to proceed with the cleaning work while looking at the procedure manual written on the detergent package or the like.
In addition, the cleaning process of the reheating piping is not fully automated, and there is no need to add special and expensive equipment, so it is possible to suppress the increase in the manufacturing cost of the bath water heater. Can be done.

In the present invention, preferably, after the cleaning process is completed, the control means drains the hot water from the bathtub by opening the automatic drain plug, and then stores the hot water for rinsing in the bathtub. This hot water is sent to the reheating piping section to execute the rinsing process of the reheating piping section.

According to such a configuration, the rinsing process after the cleaning process using the detergent can be automated by the control of the control means, which is more convenient for the user.

In the present invention, preferably, the control means can store detergent-related data indicating the types of detergents that can be used as the detergents and the cleaning treatment conditions determined for each type of detergents. It is possible to acquire from an external information device, and the data input unit has a configuration in which the user can specify the type of detergent used in the cleaning process when the user sets the cleaning mode. When the type of the detergent is specified, the control means is configured to execute the cleaning process under the cleaning treatment conditions corresponding to the specified type of detergent based on the detergent-related data. ..

According to such a configuration, the cleaning treatment conditions differ depending on the type of detergent used for the cleaning treatment, but the reheating piping portion is provided under favorable conditions in order to enhance the cleaning effect of the detergent used by the user. It becomes possible to perform a cleaning process.

The bath hot water supply device provided by the second aspect of the present invention executes and controls the hot water supply operation to the bathtub using the hot water supply piping section and the hot water reheating operation of the bathtub using the reheating piping section. A bath hot water supply device including a possible control means, a data input unit capable of inputting data to the control means, and a notification means capable of an information notification operation, using the data input unit. Then, the control means can be set to the cleaning mode of the reheating piping portion, and the control means is in a state where hot water is stored in the bathtub at a predetermined water level when the cleaning mode is set. The notification operation for prompting the user to add the detergent to the bathtub is executed by using the notification means, and the response to the effect that the hot water is stored and the detergent is added in response to this notification operation is the data. When the input unit is used, the hot water of the bathtub is sent to the reheating piping unit to execute the cleaning process of the reheating piping unit.

Such a configuration is preferable for application to a bath water heater not provided with an automatic drain plug, and the following effects can be obtained.
That is, when the user sets the cleaning mode of the reheating piping unit using the data input unit, a notification operation is performed to urge the bathtub to be filled with detergent with hot water stored at a predetermined water level. When the user responds to the effect that the detergent has been added after taking the corresponding measures, the cleaning process of the reheating piping portion using the detergent is subsequently executed under the control of the control means. In this way, according to the above configuration, it is possible to perform so-called semi-automatic cleaning of the reheating piping unit, but if the cleaning process is set using the data input unit, what kind of action can the user take? You will be notified if you should do it. Therefore, the user does not have to know under what circumstances the detergent is to be added, and it is not necessary for the user to proceed with the cleaning work while referring to the procedure manual described on the detergent package or the like. Therefore, it is convenient for the user.
Further, like the bath water heater provided by the first aspect of the present invention, the cleaning process of the reheating piping portion is not fully automated, and it is necessary to additionally provide special and expensive equipment. Therefore, it is possible to suppress an increase in the manufacturing cost of the bath water heater.

In the present invention, preferably, the bathtub is provided with a drain plug, and the control means closes the drain plug of the bathtub after draining the hot water of the bathtub after the cleaning process is completed. The notification operation for prompting the user to perform the notification operation is executed by using the notification means, and the data input unit is used to respond to the notification operation to the effect that the drain plug is closed. At that time, the hot water for rinsing is stored in the bathtub, and then the hot water is sent to the reheating piping section to execute the rinsing process of the reheating piping section.

According to such a configuration, the rinsing process can be easily and appropriately performed after the cleaning process using the detergent.

In the present invention, preferably, the control means can store detergent-related data indicating the types of detergents that can be used as the detergents and the cleaning treatment conditions determined for each type of detergents. It is possible to acquire from an external information device, and the data input unit has a configuration in which the user can specify the type of detergent used in the cleaning process when the user sets the cleaning mode. When the type of the detergent is specified, the control means executes the cleaning treatment under the cleaning treatment conditions corresponding to the specified type of detergent based on the detergent-related data, and before the cleaning treatment. In the notification operation of the above, the notification operation for prompting the accumulation of hot water in the bathtub is performed under the conditions corresponding to the specified type of detergent.

According to such a configuration, the cleaning treatment conditions differ depending on the type of detergent used for the cleaning treatment, and the reheating piping portion is cleaned under favorable conditions in order to enhance the cleaning effect of the detergent used by the user. It becomes possible to do. In addition, in the notification operation before the cleaning process is started, a notification is given to urge the bathtub to store hot water under the conditions corresponding to the specified type of detergent, so that it is specified due to a user's misunderstanding. It is also appropriately avoided that the cleaning process is started under conditions that are not suitable for the type of detergent.

In the present invention, preferably, when the recommended cleaning period in the detergent-related data elapses from the time of the previous cleaning process, the control means causes the notification operation for prompting the cleaning process to be executed by using the notification means. It is configured.

According to such a configuration, it is possible to urge the user to perform the cleaning process of the reheating piping portion at the recommended cleaning period interval corresponding to the type of detergent, so that the reheating piping portion is hygienic. It becomes more preferable to maintain the state.

Other features and advantages of the present invention will become more apparent from the following description of embodiments of the invention with reference to the accompanying drawings.

It is a schematic explanatory drawing which shows an example of the bath hot water supply device which concerns on this invention. It is a flowchart which shows an example of the operation processing procedure executed by the bath water heater shown in FIG. It is explanatory drawing of the main part which shows the other example of the bath hot water supply device which concerns on this invention. It is a flowchart which shows an example of the operation processing procedure executed by the bath water heater shown in FIG. 6 is a flowchart showing another example of the operation processing procedure executed by the bath water heater shown in FIGS. 1 and 3.

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

The bath water heater WH shown in FIG. 1 is opened and closed provided in a hot water supply device main body 9 in which various devices described later are housed in an outer case 90, remote controllers 7A and 7B in a bathroom and a kitchen, and a drain port 1a of a bathtub 1. It is provided with a free automatic drain plug 11.
The hot water supply device main body 9 is provided with a control unit 7 that executes operation control and data processing of each part of the bath hot water supply device WH.

This bath hot water supply device WH is, for example, an instantaneous gas hot water supply device, and has a hot water filling function for the bathtub 1, a bath reheating function, and a general hot water supply function for a hot water tap 22 and the like. In addition, it also has a cleaning process for the reheating piping section 5, which will be described later, and a subsequent rinsing process.

In the general hot water supply, the hot water flowing into the internal water inlet 2A from the water inlet 20 is sent to the heat exchanger 30 and heated by the burner 31, and the heated hot water flows through the internal hot water passage 2B and the general hot water outlet 2D. It is carried out in a manner of being distributed and supplied to the hot water tap 22.

The hot water filling operation to the bathtub 1 is performed via the hot water supply piping section 2. The hot water supply piping section 2 is composed of an internal water inlet channel 2A, an internal hot water supply channel 2B, a hot water supply hot water supply channel 2C, and a reheating piping section 5. By opening the on-off valve V1 provided in the hot water supply passage 2C for bath water, the hot water heated by the heat exchanger 30 is reheated from the internal hot water supply passage 2B and the hot water supply passage 2C. It flows into 5 and is supplied to bathtub 1.
The reheating piping unit 5 has a configuration in which the internal piping 5c, 5d of the bath water heater WH and the heat exchanger 33 for bath reheating are connected to the external piping 5a, 5b connected to the adapter 10 of the bathtub 1. is there. A water pressure sensor Sa is provided in the reheating piping portion 5. The water level of the bathtub 1 (the amount of hot water in the bathtub 1) can be detected based on the water pressure measured by using the water pressure sensor Sa.

In the bath reheating operation, the circulation pump P1 provided in the reheating piping section 5 is driven on, and the hot water in the bathtub 1 is sent to the heat exchanger 33 via the reheating piping section 5 to burner 34. It is carried out in such a manner that it is heated by and then returned to the bathtub 1.

The control unit 7 corresponds to an example of the control means according to the present invention, and is configured by using a microcomputer. The control unit 7 is a unit of the bath water heater WH based on the switch operation of the remote controllers 7A and 7B of the bathroom and kitchen connected to the control unit 7 and the control program stored in the memory of the control unit 7 in advance. Executes operation control and data processing. Further, as will be described later, the cleaning process of the reheating piping portion 5 is also executed.

The bathroom and kitchen remote controllers 7A and 7B are provided with a plurality of operation switches 72, a display unit 73 capable of displaying an image, a speaker SP for generating an alarm sound, a voice message, and the like. The display unit 73 and the speaker SP correspond to an example of the notification means according to the present invention. The operation switch 72 corresponds to an example of the data input means according to the present invention, and by operating the operation switch 72, the control mode of the control unit 7 can be set to the cleaning mode of the reheating piping unit 5. ing.

One of the bathroom and kitchen remote controllers 7A and 7B, for example, the kitchen remote controller 7B, includes a wireless communication unit 74 and performs data communication with an external server 8. In addition to the kitchen remote controller 7B, the bathroom remote controller 7A and the control unit 7 can acquire necessary data from the server 8. A line termination device (modem) 60 connected to the communication network N and a router 61 as a wireless LAN master unit are installed in the house, and the kitchen remote controller 7B functions as the wireless LAN slave unit. The control unit 7 can perform data communication with the server 8 and other communication devices via the kitchen remote controller 7B.

The server 8 corresponds to an example of an external information device according to the present invention, and is managed by, for example, a manufacturer or a seller of a bath water heater WH. The server 8 stores detergent-related data D1 indicating the types of detergents that can be used for cleaning the reheating piping portion 5 and specific cleaning conditions (cleaning methods) for each type. .. The control unit 7 acquires the detergent-related data D1 by communication and stores it in the storage unit 70. Of course, instead of such a method, the detergent-related data D1 can be stored in the storage unit 70 by operating one of the remote controllers 7A and 7B of the bathroom and the kitchen with a switch.

The detergent-related data D1 has the following contents, for example.
As the detergent, there are a plurality of types of detergents A to D.
When the detergent A is used, water is previously stored in the bathtub 1 so as to be XX cm above the adapter 10 of the bathtub 1. After that, detergent A is added in an amount of XX, and reheating is performed. The reheating temperature is XX ° C, and the reheating time is XX minutes. After reheating, drain all the water in the bathtub 1. After drainage, the water for rinsing treatment is stored so as to be XX cm above the adapter 10 and then reheated. The reheating temperature is XX ° C, and the reheating time is XX minutes. After this reheating, all the water for rinsing treatment is drained. It is recommended that the cleaning treatment of the reheating piping portion 5 using the detergent A be performed regularly at intervals of XX days.
The cleaning conditions when the detergents B to D are used are also defined in the same manner as described above, but the specific contents thereof will be omitted.

Next, an example of the operation processing procedure in the bath water heater WH described above will be described with reference to the flowchart shown in FIG. 2, and the operation will also be described.

First, when one of the operation switches 72 of the remote controllers 7A and 7B is operated by the user, the cleaning mode of the reheating piping unit 5 is set, and the type of detergent used for cleaning is specified, the control unit 7 sets the cleaning mode. An operation of storing hot water at a predetermined water level is executed in the bathtub 1 according to the type of detergent (S1: YES, S2). In this case, if the bathtub 1 is empty, the automatic drain plug 11 is closed and then hot water is supplied to the bathtub 1. Unlike this, when the automatic drain plug 11 is in the closed state and hot water is already accumulated in the bathtub 1, the automatic drain plug 11 is opened to reduce the hot water, or the automatic drain plug 11 is closed. By adding the required amount of hot water as it is, the operation of setting the water level of the bathtub 1 to a predetermined water level is performed.

When the above-mentioned operation is completed, the control unit 7 applies a predetermined amount of detergent to the bathtub 1, and after the detergent has been added, a predetermined switch operation (operation switch 72 of the remote controllers 7A and 7B) for indicating to that effect. (S3:) to urge the user to perform the operation (S3:).
YES, S4). This notification operation is performed, for example, in both or one of the output of a voice message from the speaker SP and the image display output by the display unit 73.

When the user takes an action corresponding to the notification operation and performs a predetermined switch operation indicating that the detergent has been added, the control unit 7 subsequently performs a cleaning process of the reheating piping unit 5 and a rinsing process thereof. Execute (S5: YES, S6, S7). In the cleaning process of the reheating piping section 5, the circulation pump P1 is operated, the detergent mixed hot water of the bathtub 1 is sent to the reheating piping section 5, and the detergent mixed hot water is transferred between the bathtub 1 and the heat exchanger 33. It is carried out by heating while circulating, and the heating temperature and the cleaning treatment time at this time are conditions according to the contents of the detergent-related data D1. In the rinsing process, after the cleaning process is completed, the automatic drain plug 11 is temporarily opened to drain the entire amount of the detergent mixed hot water from the bathtub 1, and then the automatic drain plug 11 is closed and the hot water for rinsing is poured into the bathtub 1. This is done by storing the hot water in the water and then sending it to the reheating piping section 5 to circulate it. This rinsing process is also a condition according to the contents of the detergent-related data D1.
After the rinsing process is completed, the remote controllers 7A and 7B perform a notification operation to that effect (S8: YES, S9).

According to the series of operation processing procedures described above, the user operates one of the remote controllers 7A and 7B to select the cleaning mode of the reheating piping unit 5 to specify the type of detergent, and the remote controller 7A, The cleaning process and the rinsing process of the reheating piping portion 5 are executed only by putting the detergent into the bathtub 1 and operating the switch to that effect in response to the notification operation using the 7B. The user does not need to operate the remote controllers 7A and 7B while looking at the procedure manual described on the detergent package, which is convenient. Further, since the cleaning treatment and the rinsing treatment are performed under the conditions in accordance with the contents of the detergent-related data D1, it is possible to make the dirt removing effect of the reheating piping portion 5 the best or close to the best.

FIG. 3 shows another embodiment of the present invention. In the figure, elements that are the same as or similar to those of the embodiment are designated by the same reference numerals as those of the embodiment, and duplicate description will be omitted.

The bath water heater WHa shown in FIG. 3 corresponds to a bathtub 1 in which an automatic drain plug 11 is not provided as a bathtub 1 and a manual drain plug 12 is provided in a drain port 1a.
The hardware configuration of the bath water heater WHa is the same as that of the bath water heater WH described above, but the operation processing procedure when cleaning the reheating piping portion 5 is different from that of the embodiment. Hereinafter, description will be made with reference to the flowchart of FIG.

First, when one of the operation switches 72 of the remote controllers 7A and 7B is operated by the user, the cleaning mode of the reheating piping unit 5 is set, and the type of detergent used for cleaning is specified, the control unit 7 sets the cleaning mode. The content is to urge the user to store hot water in the bathtub 1, set the water level to a predetermined water level according to the type of detergent, then add the detergent, and when it is completed, perform a predetermined switch operation. The notification operation is executed by using the speaker SP of the remote controllers 7A and 7B and the display unit 73 (S11: YES, S12).

When the user performs the work corresponding to the above-mentioned notification content and performs a predetermined switch operation, the control unit 7 operates the circulation pump P1 to send the detergent mixed water in the bathtub 1 to the reheating piping unit 5. (S13: YES, S14), the reheating piping portion 5 is cleaned by heating while circulating in. Also in this cleaning process, the heating temperature, the cleaning process time, and the like are set as conditions according to the contents of the detergent-related data D1.

When the cleaning process is completed, the control unit 7 opens the drain plug 12 of the bathtub 1 to discharge the entire amount of the detergent mixed hot water, closes the drain plug 12, and then indicates that this is completed. The notification operation for prompting the user to operate the switch is executed by using the remote controllers 7A and 7B (S15: YES, S16). On the other hand, when the user performs work corresponding to such a notification content and performs a predetermined switch operation, the control unit 7 starts a hot water filling operation for supplying hot water to the bathtub 1, and the detergent-related data D1 After collecting hot water at a water level according to the contents of (S17: YES, S18), the rinsing process is started. This rinsing process is performed by operating the circulation pump P1 to send hot water for rinsing in the bathtub 1 to the reheating piping section 5 for circulation. The conditions for the rinsing process at this time are also the detergent-related data D1. The conditions are based on the content.

When the rinsing process is completed, the remote controllers 7A and 7B are used to prompt the user to drain the rinse water from the bathtub 1 and to notify the user that the cleaning of the reheating piping section 5 is completed. It is executed (S19: YES, S20).

According to the series of operation processing procedures described above, the work of storing hot water in the bathtub 1 and the work of draining the hot water in the bathtub 1 need to be performed by the user by opening and closing the drain plug 12, but the work is performed. The remote control 7A and 7B are used to notify the timing of the operation and the water level of the hot water to be stored in the bathtub 1. In addition, the timing of adding detergent is also notified. Therefore, it is convenient for the user as compared with the case where such notification is not made and the user proceeds with the cleaning work of the reheating piping portion 5 while referring to the procedure manual of the detergent package. Further, since the cleaning treatment and the rinsing treatment are performed under the conditions in accordance with the contents of the detergent-related data D1 as in the bath water heater WH shown in FIG. 1, the effect of removing dirt from the reheating piping portion 5 is the best or It can be close to the best.

The bath water heaters WH and WHa described above can be configured to further execute the operation process as shown in FIG.
That is, the control unit 7 determines whether or not the recommended cleaning period in the detergent-related data D1 has elapsed since the previous cleaning process of the reheating piping unit 5 (S31). When the above period elapses, the remote controllers 7A and 7B are used to notify the user to perform the cleaning process (S32: YES, S33).
As a result, the user can periodically perform the cleaning process of the reheating piping portion 5 at intervals of the recommended cleaning period corresponding to the type of detergent. Therefore, it is more preferable to maintain the reheating piping portion 5 in a hygienic state.

The present invention is not limited to the contents of the above-described embodiments. The specific configuration of each part of the bath water heater according to the present invention can be variously redesigned within the scope intended by the present invention.

In the above-described embodiment, the cleaning treatment and the rinsing treatment of the reheating piping portion 5 are configured to be performed under predetermined conditions for each type of detergent, but the present invention is not limited thereto. .. For example, the cleaning and rinsing treatments may always be performed under the same conditions regardless of the type of detergent. Further, although it is not very realistic, the rinsing process may not be executed after the cleaning process of the reheating piping portion 5 is completed.

The data input unit referred to in the present invention is not limited to the operation switches 72 of the remote controllers 7A and 7B, and for example, instead of or in addition to this, a voice input type data input unit can be used. As the notification means according to the present invention, means other than the speaker SP and the display unit 73 of the remote controllers 7A and 7B can be adopted. When the bath water heater is provided with a wireless communication function, for example, a mobile phone, a smart phone, a tablet-type communication terminal, or the like can be used as a data input means or a notification means.

WH bath water heater SP speaker (notification means)
1 Bathtub 1a Drainage port 11 Automatic drainage plug 12 Drainage plug 2 Hot water supply piping part 5 Reheating piping part 7 Control part (control means)
72 Operation switch (data input section)
73 Display unit (notification means)

Claims (7)

A control means capable of executing and controlling the hot water supply operation to the bathtub using the hot water supply piping section and the hot water reheating operation of the bathtub using the reheating piping section.
A data input unit that can input data to this control means,
Information means that can notify information and
It is a bath water heater equipped with
Further, an automatic drain plug that can freely open and close the drain port of the bathtub by controlling the control means is provided.
Using the data input unit, the control means can be set to the cleaning mode of the reheating piping unit.
When the cleaning mode is set, the control means sets the automatic drain plug to a closed state and a state in which hot water is stored in the bathtub at a predetermined water level, and then puts detergent into the bathtub. When the notification operation for prompting the user is executed by using the notification means and the data input unit is used to respond to the notification operation and that the detergent has been added, the hot water in the bathtub is used. Is configured to be sent to the reheating piping section to perform a cleaning process of the reheating piping section. The bath water heater according to claim 1.
After the cleaning process is completed, the control means opens the automatic drain plug to drain the hot water from the bathtub, stores the hot water for rinsing in the bathtub, and then uses the hot water for reheating. A bath hot water supply device that is configured to feed into the piping section and execute the rinsing process of the reheating piping section. The bath water heater according to claim 1 or 2.
The control means can store detergent-related data indicating the types of detergents that can be used as the detergents and the cleaning treatment conditions determined for each type of detergents, or can be acquired from an external information device. It is said that
The data input unit has a configuration in which the user can specify the type of detergent used in the cleaning process when the user sets the cleaning mode.
When the type of the detergent is specified, the control means is configured to execute the cleaning treatment under the cleaning treatment conditions corresponding to the specified type of detergent based on the detergent-related data. , Bath water heater. A control means capable of executing and controlling the hot water supply operation to the bathtub using the hot water supply piping section and the hot water reheating operation of the bathtub using the reheating piping section.
A data input unit that can input data to this control means,
Information means that can notify information and
It is a bath water heater equipped with
Using the data input unit, the control means can be set to the cleaning mode of the reheating piping unit.
When the cleaning mode is set, the control means uses the notification means to perform a notification operation for prompting the user to add detergent to the bathtub with hot water stored at a predetermined water level in the bathtub. When the data input unit is used to respond to the notification operation and to the effect that the hot water has been stored and the detergent has been added, the hot water from the bathtub is sent to the reheating piping unit. A bath hot water supply device characterized in that it is configured to perform a cleaning process of the reheating piping portion. The bath water heater according to claim 4.
The bathtub is equipped with a drain plug
The control means uses the notification means to perform a notification operation for prompting the user to close the drain plug of the bathtub after draining the hot water of the bathtub after the cleaning process is completed. In response to this notification operation, when the data input unit is used to respond to the fact that the drain plug is closed, the hot water for rinsing is stored in the bathtub and then this hot water. Is configured to be sent to the reheating piping section to perform a rinsing process of the reheating piping section. The bath water heater according to claim 4 or 5.
The control means can store detergent-related data indicating the types of detergents that can be used as the detergents and the cleaning treatment conditions determined for each type of detergents, or can be acquired from an external information device. It is said that
The data input unit has a configuration in which the user can specify the type of detergent used in the cleaning process when the user sets the cleaning mode.
When the type of the detergent is specified, the control means executes the cleaning treatment under the cleaning treatment conditions corresponding to the specified type of detergent based on the detergent-related data, and before the cleaning treatment. In the notification operation of the above, the bath hot water supply device is configured to perform a notification operation for prompting the accumulation of hot water in the bathtub under the conditions corresponding to the specified type of detergent. The bath water heater according to claim 3 or 6.
The control means is configured to execute a notification operation for prompting the cleaning process by using the notification means when the recommended cleaning period in the detergent-related data has elapsed since the previous cleaning process. apparatus.

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