JP5017128B2 - Bathtub automatic cleaning system - Google Patents

Description

  The present invention relates to a bathtub automatic cleaning system that performs cleaning of a bathtub by spraying a detergent solution from a cleaning nozzle toward the inner wall surface of the bathtub, and more particularly to a bathtub automatic cleaning system that can suppress contamination in the bathtub after bathtub cleaning. .

As an automatic cleaning system for a bathtub, for example, a cleaning pipe is connected to a cleaning nozzle provided in the bathtub, a detergent is mixed with hot water flowing into the cleaning pipe to generate a detergent liquid, and the detergent liquid is supplied from the cleaning nozzle to the bathtub. It is comprised so that bathtub washing may be performed by injecting toward an inner wall surface.
And in this kind of automatic bath cleaning system, there are cleaning modes that have different cleaning capabilities such as a standard mode, a careful mode, and a saving mode, and a cleaning mode can be selected according to the degree of dirt in the bathtub ( Patent Document 1 and Patent Document 2). As a cleaning process in each of the above cleaning modes, basically, a preliminary rinsing process, a detergent cleaning process, a standby process, and a rinsing process are sequentially performed, and the standby time and the rinsing time are different between the cleaning modes, The detergent concentration of the detergent liquid and the spray time of the detergent liquid are different.
JP-A-11-206602 Japanese Patent Laid-Open No. 10-234598

However, even when a cleaning mode having different cleaning capabilities is provided as in the above-described conventional example, it is difficult to completely wash away the bathtub scale, and the sprayed detergent liquid remains in the bathtub. There is also. For this reason, it was difficult to keep clean inside the bathtub until various bacteria, fungi, etc. propagated using scale or detergent as a bait and filled with hot water at the next bathing.
The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an automatic bath cleaning system capable of reliably suppressing contamination in the bathtub in preparation for the next hot water filling after being washed in the bathtub. And

The bathtub automatic cleaning system according to the present invention is:
A detergent having a washing nozzle provided in the bathtub and a washing pipe connected to the washing nozzle for supplying detergent liquid, hot water or water to the washing nozzle, and jetting the detergent liquid from the washing nozzle toward the inner wall surface of the bathtub In the automatic bath cleaning system for performing bath cleaning by executing a cleaning step including a cleaning step and a rinsing step of jetting hot water or water,
A silver ion generator is provided in the washing tube,
At the end of the cleaning process, a bath cleaning control means is provided for controlling the cleaning process to end after the silver ion generator is operated and hot water or water mixed with silver ions is sprayed from the cleaning nozzle for a certain period of time. ,
When the bath cleaning control means can be filled with hot water immediately after bathtub cleaning, the bath cleaning control means does not perform the operation of injecting the hot water or water mixed with the silver ions .
Thereby, silver ion adheres to the inner wall surface of the bathtub after bathtub washing, the drain outlet in a bathtub, etc., and the disinfection and antibacterial action based on silver ion are provided. Therefore, during the period from the time when the bath is washed to the time when the bath is filled with water, the propagation of germs and molds can be suppressed in the bath.
By the way, as a case where the hot water can be filled immediately after washing the bathtub, for example, when the bathtub is washed by a washing / automatic hot water interlocking operation in which the bathtub is washed immediately before the hot water filling, or in the speed mode in which the bathtub washing time is shortened. The case where it wash | cleans etc. is mentioned.
That is, when the hot water can be filled immediately after washing the bathtub, the inside of the bathtub is not left empty after the washing of the bathtub until the hot water is filled. Moreover, even if silver ions adhere to the bathtub after washing, if the bathtub water is immediately filled, it becomes difficult to give sterilization and antibacterial action by the silver ions to the bathtub. Therefore, in this case, by not performing an operation of injecting hot water or water mixed with silver ions, consumption of silver ions can be suppressed, and waste of silver ions can be suppressed and cost can be reduced. .

The bath cleaning control means may be configured to cause the hot water or water mixed with the silver ions to be jetted from the cleaning nozzle for a certain time after the rinsing process performed at the end of the cleaning process.
Thereby, since the stain | pollution | contamination and detergent in a bathtub are washed away by a rinse process, the disinfection and antibacterial action based on silver ion are provided with respect to the bathtub after a stain | pollution | contamination and detergent were washed away. Therefore, during the period after the bathtub is washed until the next hot water filling, the propagation of germs, molds, etc. that feed on dirt, detergent, etc. can be reliably suppressed.

Moreover, the said bathtub washing | cleaning control means can be set as the control structure which injects the hot water or water which mixed the said silver ion from the said washing nozzle for a fixed time as a rinsing process performed at the end of a washing | cleaning process.
Thereby, the silver ion can be made to adhere at the same time to wash away dirt and detergent in the bathtub with hot water or water mixed with silver ions. Therefore, it is possible to save water as compared with the case where the hot water or water mixed with silver ions is jetted after performing the final rinsing step with only fresh hot water or water. At the same time, sterilization and antibacterial action based on silver ions can be imparted to the bathtub after washing.

As described above, according to the present invention, at the end of the cleaning process, hot water or water mixed with silver ions is sprayed for a certain period of time, and the cleaning process is terminated. The inside contamination can be surely suppressed and kept clean.
Furthermore, if the bath can be refilled immediately after washing the bath , the bath will not be left empty until the bath is refilled. Alternatively, it is possible to reduce the cost by suppressing the consumption of silver ions by not performing the operation of injecting water.

  Hereinafter, embodiments of the present invention will be described. In addition, this Embodiment comprises the bath hot-water supply system provided with the washing | cleaning unit which functions as a bathtub automatic washing system which concerns on this invention.

<Embodiment 1>
The bath hot water supply system shown in FIG. 1 includes a heat source machine 1, a bathtub 2, a washing unit 3, and a multifunction remote controller 4 for remotely operating the heat source machine 1 and the washing unit 3.
The heat source device 1 includes a return pipe 14 between a hot water supply line 13 in which a hot water supply pipe 11 and a hot water discharge pipe 12 are connected to a hot water supply heat exchanger 10 a, and the reheating heat exchanger 10 b and the circulation fitting 20 of the bathtub 2. And a circulation pipe 16 to which the forward pipe 15 is connected, hot water is supplied through the hot water supply pipe 13, and bath water in the bathtub 2 is replenished through the circulation pipe 16. Further, the heat source device 1 is provided with a hot water filling pipe 17 branched from the hot water supply pipe 12 of the hot water supply pipe 13 and connected to the return pipe 14 of the circulation pipe 16. By opening the electromagnetic valve 17a, hot water is supplied from the hot water supply pipe 13 side to the circulation pipe 16 through the hot water filling pipe 17, and this hot water is conveyed by the return pipe 14 and the forward pipe 15 to fill the bathtub 2 with hot water. Is called. The heat source unit 1 includes combustion units 18a and 18b that heat the heat exchangers 10a and 10b, a control unit 5 that controls the operation of the heat source unit 1, and the like. A gas supply pipe 19 for supplying fuel gas to a burner provided therein is connected to the combustion sections 18a and 18b. In addition, the control part 5 will not change the combustion part 18a, if the flow sensor 11a provided in the water supply pipe 11 detects the minimum amount of water flow, unless the washing | cleaning unit 3 (tub washing control means 7) has output the combustion prohibition signal. Combustion is started and the hot water supply heat exchanger 10a is heated. Thereby, hot water is supplied through the hot water supply pipe 13. And if the flow sensor 11a stops detecting water flow, the combustion part 18a will stop a combustion (including a seed-fire state).

  The cleaning unit 3 is installed on the outer periphery of the bathtub 2, and is branched from the valve device 8, the cleaning nozzle 30 attached to the bathtub 2, and the hot water discharge pipe 12 of the heat source unit 1, and is connected to the valve device 8. A connecting pipe 31, a cleaning pipe 32 in which the valve device 8 and the cleaning nozzle 30 are connected, a detergent tank 33 in which a detergent stock solution is stored, a silver ion generator 6 provided in the cleaning pipe 32, and this cleaning unit Bath cleaning control means 7 for controlling the operation of No. 3;

The valve device 8 includes a water amount control valve 81, a flow sensor 82, an on-off valve 83, an air release valve 84, and a backflow prevention valve 85. The atmosphere release valve 84 is a valve for releasing the atmosphere when the water supply pipe 11 falls into a negative pressure state. The water amount control valve 81 is a valve that can adjust the opening degree of the valve to a predetermined position by a stepping motor or the like.
The cleaning nozzle 30 is provided integrally with the circulation metal fitting 20 and sprays detergent liquid, hot water, water, or the like radially toward the inner wall surface of the bathtub 2 and the lower surface of the bathtub lid 21 placed on the bathtub 2. It has a nozzle shape. Here, the inner wall surface of the bathtub 2 includes a side surface and a bottom surface in the bathtub 2. In addition, this washing nozzle 30 may be provided separately from the circulation metal fitting 20, may be provided in the bottom face of the bathtub 2, and may be provided in multiple numbers.
The cleaning pipe 32 is provided with a detergent mixing section 34 having a venturi structure, and a detergent supply pipe 35 extending from the detergent tank 33 is connected to the detergent mixing section 34. The detergent supply pipe 35 is provided with a detergent valve 36 for controlling the supply / blocking of the detergent stock solution from the detergent tank 33 to the detergent mixing unit 34. As the detergent valve 36, a valve that is opened and closed and whose opening degree is adjusted to a predetermined opening degree is used.
The bathtub cleaning control means 7 includes a valve device 8, a detergent valve 36, a silver ion generation device 6, time measuring means (not shown) such as a timer, a storage unit (not shown), a control unit 5 of the heat source unit 1, and a remote controller 4. The signal is connected to each other, and signals are exchanged with these units to control the operation of bath cleaning by the cleaning unit 3.

  The silver ion generator 6 is provided with a pair of silver electrodes in the cylinder, and silver ions are dissolved in hot water or water flowing through the cylinder by electrolysis when the silver electrode is energized. In addition, the silver ion concentration of this hot water or water is controlled by the current value which supplies with electricity to a silver electrode. The silver ion generator 6 is provided upstream of the detergent mixing unit 34 in the cleaning tube 32. Thereby, it is prevented that a detergent liquid contacts a silver electrode, and the generation | occurrence | production performance of silver ion is not deteriorated by adhesion of a detergent.

  The remote controller 4 is signal-connected to the control unit 5 of the heat source machine 1 and the bathtub washing control means 7 of the washing unit 3 and exchanges signals with these to remotely operate the heat source machine 1 and the washing unit 3. The remote controller 4 includes an operation switch 41, a cleaning switch 42, a hot water filling switch 43, a reheating switch 44, a touch panel 45, and the like. On the touch panel 45, an operation screen for inputting and setting a hot water set temperature, a hot water supply set temperature, a cleaning mode, and the like is displayed by touching the screen. In addition, you may make it provide separately the remote control 4 only for the bathtub washing | cleaning for operating the washing | cleaning unit 3 remotely as the remote control 4. FIG.

  In the bath hot water supply system having the above configuration, bath cleaning is automatically performed by the cleaning unit 3. The bathtub cleaning operation is controlled by the bathtub cleaning control means 7. Below, this bathtub washing | cleaning is demonstrated.

In order to perform bath cleaning by the cleaning unit 3, first, the remote controller 4 selects any one of the standard mode, the careful mode, and the speed mode as the cleaning mode, and the cleaning switch 42 is turned on. Then, the selected cleaning mode is determined, and a cleaning operation according to the cleaning mode is executed.
In addition, when bathtub cleaning is performed, it is preferable that the bathtub lid 21 is placed on the bathtub 2, and therefore, when the cleaning switch 42 is turned on, before the bathtub cleaning is started, a predetermined amount (not shown) is provided. Only when the lid is detected by the sensor and the bathtub lid 21 is placed on the bathtub 2, the bathtub cleaning may be started. When the bathtub lid 21 is not placed on the bathtub 2, the absence of the lid may be notified by the remote controller 4 or the like, and the bathtub lid 21 may be prompted to be placed on the bathtub 2. Moreover, when bathtub cleaning is performed, the bathtub water is already drained in the bathtub 2, and the drain plug 22 in the bathtub 2 is in an open state.

Hereinafter, the operation of bathtub cleaning will be described for each cleaning mode.
(Standard mode)
As shown in FIG. 2, in the cleaning process in the standard mode, “preliminary rinsing” → “detergent cleaning” → “standby” → “rinsing” is sequentially performed, and finally “silver ion cleaning” is performed to perform a cleaning operation. Is terminated.

  In the preliminary rinsing process, the water amount control valve 81 of the cleaning unit 3 is set to a predetermined opening and the on-off valve 83 is opened. When the flow rate sensor 11a of the heat source unit 1 detects water flow, the combustion unit 18a starts burning. The hot water supply heat exchanger 10a is heated (S101). Then, water from the water supply pipe 11 is heated by the hot water supply heat exchanger 10a, and hot water having a predetermined temperature (for example, a hot water filling set temperature) is supplied to the cleaning pipe 32 of the cleaning unit 3 through the hot water supply pipe 12 and the connection pipe 31. It is sent. At this time, a constant amount of hot water controlled by the water amount control valve 81 is caused to flow through the cleaning pipe 32 and the detergent valve 36 of the detergent supply pipe 35 is closed, so that only this hot water is supplied from the cleaning nozzle 30 to the bathtub 2. Are sprayed toward the inner wall surface of the tub and the lower surface of the bathtub lid 21. As a result, dirt such as hair and scale adhering to the inner wall surface of the bathtub 2 is preliminarily washed away. Moreover, since the inner wall surface of the bathtub 2 and the lower surface of the bathtub lid 21 are wetted with hot water, the detergent easily spreads over the entire inner wall surface of the bathtub 2 and the lower surface of the bathtub lid 21 when the detergent liquid is next sprayed. Furthermore, since the inner wall surface of the bathtub 2 and the lower surface of the bathtub lid 21 are warmed with hot water prior to the spraying of the detergent liquid, the cleaning effect of the detergent liquid can be improved. When the hot water is sprayed for a predetermined time (for example, 1 minute) (S102), the preliminary rinsing process is terminated and the process proceeds to the detergent cleaning process.

  In the detergent cleaning step, the detergent valve 36 of the detergent supply pipe 35 is opened from the preliminary rinse state (S103). Then, the detergent stock solution is injected from the detergent tank 33 into the detergent mixing section 34 via the detergent supply pipe 35 by the negative pressure generated when the hot water flowing through the cleaning pipe 32 passes through the detergent mixing section 34 having the venturi structure, and the detergent is poured into the hot water. The stock solution is mixed to produce a detergent solution. Then, this detergent liquid is sprayed from the cleaning nozzle 30 toward the inner wall surface of the bathtub 2 and the lower surface of the bathtub lid 21. As a result, dirt such as scale adhering to the inner wall surface of the bathtub 2 and the lower surface of the bathtub lid 21 is washed. When the detergent liquid is sprayed for a predetermined time (for example, 2 minutes) (S104), the detergent valve 36 and the on-off valve 83 of the cleaning unit 3 are closed, and the spray of the detergent liquid from the cleaning nozzle 30 is stopped (S105). The detergent washing process is finished. When this detergent cleaning process is completed, the process proceeds to a standby process.

  In the standby step, all injections from the cleaning nozzle 30 are stopped and the detergent solution is attached to the inner wall surface of the bathtub 2 or the lower surface of the bathtub lid 21 until the predetermined time elapses (S106). Thereby, the detergent liquid can penetrate dirt such as scale attached to the inner wall surface of the bathtub 2 and the lower surface of the bathtub lid 21, lift the dirt, and can be easily washed away in the next rinsing step. When this predetermined time (for example, 3 minutes) elapses (S106), the standby process is terminated and the process proceeds to the rinsing process.

  In the rinsing process, basically, as in the above-described preliminary rinsing process, the water amount control valve 81 of the cleaning unit 3 is set to a predetermined opening and the on-off valve 83 is opened, so that the flow rate sensor 11a of the heat source unit 1 is When the water flow is detected, the combustion section 18a starts to burn and the hot water supply heat exchanger 10a is heated (S107). Then, hot water from the purified water with a predetermined amount of water is sprayed from the washing nozzle 30 toward the inner wall surface of the bathtub 2 and the lower surface of the bathtub lid 21. As a result, dirt such as scales floating on the inner wall surface of the bathtub 2 and the lower surface of the bathtub lid 21 by the detergent liquid is washed away together with the detergent liquid. When this hot water injection is performed for a predetermined time (for example, 2 minutes) (S108), the on-off valve 83 of the cleaning unit 3 is closed (S109), the injection from the cleaning nozzle 30 is stopped, and the rinsing process is completed. .

And when the above process is complete | finished, silver ion washing | cleaning is performed.
In this case, first, it is determined whether or not the bathtub cleaning is linked to automatic hot water filling, that is, whether or not the bathtub cleaning is performed by a washing / automatic hot water linked operation performed immediately before automatic hot water filling. (S110). And this bathtub washing is performed by the drainage / automatic washing interlocking operation etc. which are automatically performed after draining or bathtub water drainage, and when it is not the case by the above-mentioned washing / automatic hot water interlocking operation (in S110) “No”), the following silver ion cleaning is performed.

  In the silver ion cleaning step, the water amount control valve 81 of the cleaning unit 3 is set to a predetermined opening, the on-off valve 83 is opened, and the silver ion generator 6 is operated (S111). In this silver ion cleaning process, the bathtub cleaning control means 7 outputs a combustion prohibition signal to the control unit 5 of the heat source unit 1, and the combustion unit 18a does not start burning even if the flow sensor 11a detects water flow. The hot water supply heat exchanger 10a is maintained in a heating stopped state. Then, water from the hot water supply pipe 13 side is sent to the cleaning pipe 32 of the cleaning unit 3 through the connection pipe 31, and a constant amount of water is caused to flow into the cleaning pipe 32 by the water amount control valve 81. At this time, silver ions generated by the silver ion generator 6 are mixed into the water flowing through the cleaning tube 32. That is, a pair of silver electrodes of the silver ion generator 6 is energized to generate silver ions by electrolysis of the silver electrodes, whereby water flowing through the cleaning tube 32 passes through the cylinder of the silver ion generator 6. In the meantime, silver ions are dissolved in this water. Then, silver ion water containing silver ions is sprayed from the cleaning nozzle 30 toward the inner wall surface of the bathtub 2 and the lower surface of the bathtub lid 21. Thereby, silver ions adhere to the inner wall surface of the bathtub 2 and the lower surface of the bathtub lid 21. At the same time, silver ions are attached to the drain outlet 23 and the washing nozzle 30 of the bathtub 2. Therefore, propagation of germs and molds in these places can be prevented by the antibacterial and antibacterial effects of silver ions.

  When the silver ion water is sprayed for a predetermined time (for example, 2 minutes) (S112), the on / off valve 83 of the cleaning unit 3 is closed and the silver ion generator 6 is stopped (S113). The silver ion water injection is stopped, and the silver ion cleaning step is completed. At the end of this silver ion cleaning process, the bathtub cleaning operation is completed, and the entire cleaning process is completed.

  As described above, according to the first embodiment, the silver ion cleaning process is performed at the end of the bathtub cleaning process, and the entire cleaning process is terminated when the silver ion cleaning process ends. From this, the silver ion attached to the bathtub 2 such as the inner wall surface of the bathtub 2, the lower surface of the bathtub lid 21, the drain outlet 23, the washing nozzle 30, etc. in the bathtub 2 is washed after washing the bathtub. Is also retained. Therefore, the propagation of germs and molds in the bathtub 2 after washing the bathtub can be suppressed by the antibacterial and sterilizing effects of silver ions. In addition, in the silver ion cleaning step, since the silver ion water sprayed from the cleaning nozzle 30 uses unheated water, the bathtub 2 itself can be cooled, so that it is easy to breed under high temperature and high humidity. It is effective in suppressing the occurrence of various germs and molds. As a result, the inside of the bathtub 2 can be kept clean after the bathtub is washed until the next hot water filling.

  On the other hand, in the case of cleaning / automatic hot water interlocking operation in which the bath cleaning is performed immediately before the automatic hot water filling (“Yes” in S110), the above silver ion cleaning process is not performed, and the bath cleaning operation is performed at the end of the rinsing process. End. That is, the silver ion cleaning is mainly performed until the next hot water filling in order to prevent germs in the bathtub 2 from breeding due to sterilization and antibacterial effects of silver ions, and to keep clean. However, in the case where automatic hot water filling is performed immediately after washing, the inside of the bathtub 2 is not left empty after washing. In this case, the silver ion washing step is not performed. Thereby, consumption of silver in the silver ion generator 6 can be suppressed, and waste of silver can be suppressed and cost can be reduced.

(Detailed mode)
As shown in FIG. 3, in the careful cleaning mode, the above “preliminary rinsing” → “detergent cleaning” → “waiting” → “rinsing” is performed in this order, and “detergent cleaning” → “waiting” → “rinsing” again. Finally, the “silver ion cleaning” is executed, and the cleaning operation is terminated.

  That is, in the careful mode, as in the case of the standard mode, the preliminary rinsing process (S201, S202), the detergent cleaning process (S203 to S205), the standby process (S206), and the rinsing process (S207 to S210) are sequentially executed. However, when a predetermined time elapses in the rinsing process (S208), it is determined whether or not the second rinsing process (the final rinsing) has been performed (S209). At this time, when it is not the second rinsing step (that is, when it is the first rinsing step) (“No” in S209), the detergent cleaning step (S203 to S205) is again performed, and the standby step (S206). The rinsing process (S207, S208) is executed.

  When the second rinsing process is completed (“Yes” in S209), the on-off valve 83 is closed (S210), and the silver ion cleaning process is executed as in the standard mode (S212 to S214). The entire cleaning process is terminated when the ion cleaning process is completed. Therefore, in this case as well, after washing the bathtub, the inside of the bathtub 2 can be kept clean by eliminating silver ions and preventing proliferation of germs by the antibacterial effect until the next hot water filling.

  In the case of the careful mode, as in the case of the standard mode, when the bathtub cleaning is performed by the cleaning / automatic hot water interlocking operation (“Yes” in S211), the silver ion cleaning step is performed. First, the bathtub cleaning operation is terminated at the end of the final rinsing process. Thereby, consumption of silver in the silver ion generator 6 can be suppressed, and waste of silver can be suppressed and cost can be reduced.

(Speed mode)
As shown in FIG. 4, the cleaning process in the speed mode is basically performed by performing “preliminary rinsing” → “detergent cleaning (small amount of detergent)” → “waiting” → “rinsing (short time)”. The operation is terminated.

  That is, in the speed mode, as in the case of the standard mode, the preliminary rinsing process (S301, S302), the detergent cleaning process (S303 to S305), the standby process (S306), and the rinsing process (S307 to S309) are sequentially executed. However, compared with the standard mode and the careful mode, in the detergent cleaning process, the opening degree of the detergent valve 36 is reduced (S303) to reduce the amount of detergent in the detergent liquid, and in the rinsing process, the rinsing time is shortened. (S308), the operation is controlled so that the entire bathtub cleaning time is performed in a short time.

  In the speed mode, in principle, when the rinsing process is completed, the bath cleaning is terminated, and the silver ion cleaning process is not performed. That is, when the speed mode is selected, it is usually considered that the hot water is filled immediately and there is little possibility that the bathtub 2 is left empty for a long time after washing. Do not perform the ion cleaning process. Thereby, consumption of silver in the silver ion generator 6 can be suppressed, and waste of silver can be suppressed and cost can be reduced.

However, even when this speed mode is selected, for example, in the case of drainage / automatic cleaning linked operation in which bath cleaning is automatically performed after draining the bath water after draining the bath water ("Yes" in S310) After performing the rinsing process, the silver ion cleaning process (S311 to S313) is performed. In this case, it is considered that there is a high possibility that the inside of the bathtub 2 will be left empty after washing the bathtub. Thereby, after washing the bathtub, the inside of the bathtub 2 can be prevented from breeding bacteria and the like by the sterilization of silver ions and the antibacterial effect until the next hot water filling.
In addition, the time of the silver ion washing process performed in the case of this speed mode is set to the same time as in the case of the standard mode or the careful mode. Thereby, a silver ion can fully adhere in the bathtub 2, and the disinfection and antibacterial action of a silver ion can be exhibited reliably. In the case of the speed mode, the time for the detergent cleaning process may be shortened compared to the case of the standard mode or the careful mode.

<Embodiment 2>
In the second embodiment, when washing the bathtub, the bathtub washing control unit 7 performs control so as to perform rinsing (silver ion rinsing) with silver ion water mixed with the silver ions as a rinsing process performed at the end of the washing process. The configuration of the bathtub cleaning control means 7 in the second embodiment other than the control configuration described above is the same as that in the first embodiment. Hereinafter, each cleaning mode will be described.

(Standard mode)
In the standard mode in the second embodiment, “preliminary rinsing” → “detergent cleaning” → “standby” is sequentially performed, and finally “silver ion rinsing” is performed to complete the cleaning operation. That is, as shown in FIG. 5, in this standard mode, when the standby process (S106) is completed, the silver ion rinsing process (S111 to S113) is executed instead of the final rinsing process (S107 to S109).

However, when this bathtub cleaning is performed by the cleaning / automatic hot water interlocking operation performed immediately before the automatic hot water filling (“Yes” in S110), the silver ion rinsing process is not performed, and the rinsing process using only hot water is performed. (S107 to S109) are performed, and the bath washing operation is terminated at the end of the rinsing step.
Other operations in the standard mode of the second embodiment are the same as those in the standard mode of the first embodiment (FIG. 2).

(Detailed mode)
The careful mode in the second embodiment is “preliminary rinsing” → “detergent cleaning” → “waiting” → “rinsing” in this order, and after performing “detergent cleaning” → “standby” once again, finally the above “silver ion rinsing” "Is performed and the cleaning operation is completed. That is, as shown in FIG. 6, in this careful mode, it is determined whether or not the second standby process has been performed after the standby process (S206) is completed (S222). Steps (S207 and S208) are performed, and the detergent cleaning steps (S203 to S205) and the standby step (S206) are executed once again. When the second standby process is completed (“Yes” in S222), a silver ion rinsing process (S212 to S214) is executed instead of the final finishing rinsing process (S207, S208).

However, in the case where the bathtub cleaning is performed by the cleaning / automatic hot water interlocking operation performed immediately before the automatic hot water filling (“Yes” in S211), the silver ion rinsing process is not performed, and the rinsing process using only hot water ( Steps S207 to S210) are performed, and the bathtub cleaning operation is terminated upon completion of the rinsing process.
Other operations in the careful mode of the second embodiment are the same as those in the careful mode of the first embodiment (FIG. 3).

(Speed mode)
In the speed mode in the second embodiment, “preliminary rinsing” → “detergent cleaning (small amount of detergent)” → “waiting” → “rinsing (short time)” is performed, and the cleaning operation is completed. That is, as shown in FIG. 7, in this speed mode, after completion of the standby step (S306), this bathtub cleaning is performed by a drainage / automatic cleaning linked operation in which the bathtub cleaning is automatically executed after draining the bath water. If this is not the case ("No" in S310), a rinsing process using only hot water (S307 to S309) is performed, and when this rinsing process is completed, the bath cleaning operation is terminated.

However, when this bathtub cleaning is performed by the drainage / automatic cleaning linked operation (“Yes” in S310), the silver ion rinsing step (S307 to S309) is used instead of the last rinsing step (S307 to S309). S311 to S313) are performed, and the cleaning operation is terminated when the silver ion rinsing process is completed.
Other operations in the speed mode of the second embodiment are the same as those in the speed mode of the first embodiment (FIG. 4).

  As described above, according to the second embodiment, the bathtub cleaning control means 7 controls the jetting of silver ion water mixed with the silver ions from the cleaning nozzle 30 as a rinsing process performed at the end of the cleaning process. Therefore, the silver ions can be adhered to the bathtub 2 at the same time as the dirt and detergent in the bathtub 2 are washed away with the silver ion water. Therefore, it is possible to save water as compared with the case of performing the silver ion cleaning process in which silver ion water is jetted after performing the final rinsing process with hot water using purified water. At the same time, sterilization and antibacterial action based on silver ions can be imparted in the bathtub 2 after washing the bathtub, and after washing the bathtub, the contamination in the bathtub 2 is reliably suppressed and cleaned in preparation for the next hot water filling. Can keep.

In addition, this invention is not limited only to said each embodiment, A various change is possible within the scope of the present invention.
For example, in the above-described silver ion cleaning or silver ion rinsing process, the bathtub cleaning control means 7 may not use a combustion prohibition signal but may use hot water heated by the hot water supply heat exchanger 10a.
Moreover, you may make it use water, without heating the heat exchanger 10a for hot water supply for all the processes of bathtub cleaning, or heat the heat exchanger 10a for hot water supply for one or several processes of each process of bathtub cleaning. You may make it use water, without doing.

It is a schematic block diagram which shows the whole structure of the bath hot water supply system provided with the washing | cleaning unit which comprises the bathtub automatic washing system which concerns on this invention. In Embodiment 1, it is a flowchart which shows the bathtub washing operation | movement in standard mode. In Embodiment 1, it is a flowchart which shows the bathtub washing operation | movement in careful mode. In Embodiment 1, it is a flowchart which shows the bathtub washing operation | movement in speed mode. In Embodiment 2, it is a flowchart which shows the bathtub cleaning operation | movement in standard mode. In Embodiment 2, it is a flowchart which shows the bathtub washing operation | movement in careful mode. In Embodiment 2, it is a flowchart which shows the bathtub washing operation | movement in speed mode.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat source machine 2 Bathtub 3 Cleaning unit 4 Remote control 6 Silver ion generator 7 Bath cleaning control means 8 Valve device 20 Circulation metal fitting 22 Bathtub lid 30 Cleaning nozzle 31 Connection pipe 32 Cleaning pipe 33 Detergent tank 34 Detergent mixing part 35 Detergent supply pipe 36 Detergent valve

Claims (3)

A detergent having a washing nozzle provided in the bathtub and a washing pipe connected to the washing nozzle for supplying detergent liquid, hot water or water to the washing nozzle, and jetting the detergent liquid from the washing nozzle toward the inner wall surface of the bathtub In the automatic bath cleaning system for performing bath cleaning by executing a cleaning step including a cleaning step and a rinsing step of jetting hot water or water,
A silver ion generator is provided in the washing tube,
At the end of the cleaning process, a bath cleaning control means is provided for controlling the cleaning process to end after the silver ion generator is operated and hot water or water mixed with silver ions is sprayed from the cleaning nozzle for a certain period of time. ,
The bathtub automatic cleaning system in which the bathtub cleaning control means has a control configuration in which the operation of injecting the hot water or water mixed with the silver ions is not performed when the hot water can be filled immediately after the bathtub cleaning. In the bathtub automatic cleaning system according to claim 1,
The bath cleaning control means is a bath automatic cleaning system having a control configuration in which hot water or water mixed with the silver ions is jetted from the cleaning nozzle for a certain time after the rinsing process performed at the end of the cleaning process. In the bathtub automatic cleaning system according to claim 1,
The bathtub automatic cleaning system has a control configuration in which hot water or water mixed with the silver ions is jetted from the cleaning nozzle for a certain period of time as a rinsing process performed at the end of the cleaning process.

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