JP2980360B2 - Bathtub cleaning device and automatic bath kettle equipped with the device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub cleaning device for automatically cleaning a bathtub and an automatic bath pot provided with the device.

[Conventional technology]

As a device for automatically cleaning a bathtub, Japanese Utility Model Laid-Open No. 63-7186
No. 9 is known. This device is provided with a washing nozzle for injecting a washing liquid containing washing into a lid of a bathtub and a water injection nozzle for injecting clean water such as tap water.When washing the bathtub, the washing liquid is washed from a detergent tank by a pump. Supply it to the nozzle, spray it into the bathtub to remove dirt,
Thereafter, clean water is supplied from a water supply source to a water injection nozzle to be sprayed into the bathtub, so that the dirt component of the bathtub and the cleaning liquid which have been dropped by the cleaning liquid are washed away and discharged from the drain hole.

[Problems to be solved by the invention]

However, since this conventional cleaning device sprays the cleaning liquid at a normal temperature, the chemical cleaning ability of the cleaning liquid is inferior,
There was a problem that the inner wall surface of the bathtub could not be effectively cleaned. Further, since the cleaning liquid injected from the cleaning nozzle is not used repeatedly and flows out from the drain hole together with the water to be injected next, there is no waste in using the detergent.

The present invention has been made to solve the above-mentioned conventional problems, and a first object is to clean a dirt on a bathtub inner wall surface by heating a cleaning liquid and circulating the cleaning liquid on the bathtub inner wall surface. A second object of the present invention is to provide a bath tub cleaning device that can be equipped with a bath tub cleaning device that can be filled with hot water by connecting a water heater to the bath tub cleaning device.

[Means for solving the problem]

The present invention is configured as described below to achieve the above object. That is, the bathtub cleaning apparatus of the present invention has a cleaning nozzle arranged toward the inner wall surface of the bathtub, and a return pipe connected to the bottom surface of the bathtub. A circulating conduit, a heater incorporated in the circulating conduit for heating the circulating cleaning liquid, a detergent charging device for supplying a detergent to the circulating path of the cleaning liquid including the bathtub, and a clean line containing no detergent in the circulating path. A water supply unit for supplying water or hot water, a temperature sensor for detecting the temperature of the circulating cleaning liquid, a water amount detection unit for directly or indirectly detecting the amount of water or hot water supplied from the water supply unit to the circulation path, and a bathtub The amount of water supplied from a water supply unit to be mixed with the detergent is determined based on a detection signal of the water amount detection unit and a drainage unit that drains the water therein, and a cleaning liquid sufficient to allow the pump to operate normally is prepared and stored in the circulation path. At the same time, the temperature of the circulating cleaning liquid is controlled by controlling the heater based on the temperature detection signal, and the cleaning operation is controlled by controlling the operations of the pump, the water supply unit, and the drainage unit in accordance with a predetermined cleaning operation program. And an automatic bath with the bath tub cleaning device of the present invention, a cleaning nozzle arranged toward the inner wall surface of the bath tub, and a bottom surface of the bath tub. Including a return pipe that is connected in communication, a return pipe from the return pipe to the cleaning nozzle through the pump and the forward pipe in order, a heater that is incorporated in the return pipe and heats the circulating cleaning liquid, and a bathtub A detergent supply device for supplying a detergent to a circulation path of the cleaning liquid, a water heater connected to the circulation line via a pouring on / off valve, a temperature sensor for detecting a temperature of the circulation cleaning liquid, and a water supply Water amount detection means for directly or indirectly detecting the amount of supplied water or hot water, drainage means for draining water in the bathtub, and water supply from a water heater for mixing with a detergent based on a detection signal of the water amount detection means. The amount of the cleaning liquid is determined to be sufficient to operate the pump normally and stored in the circulation path, and the temperature of the circulation cleaning liquid is controlled by controlling the heater based on the temperature detection signal, and further provided in advance. It is characterized by comprising a control device capable of controlling the operation of the pump, the water heater, the pouring on / off valve and the drainage means in accordance with the program of the washing operation and the filling operation and controlling the washing operation and the filling operation. I have. In addition, the return pipe of the automatic bath is provided with a return pipe opening / closing valve for switching a flow path, and a first return branch pipe connected to the bottom of the bathtub and a second return pipe connected to a wall surface of the bathtub. The first return branch pipe is provided with a water level sensor for detecting a water level in the bathtub, and the return pipe opening / closing valve, the water level sensor, and the detergent charging device are integrally formed as a cleaning unit; Also, the water heater, the pump, and the heater are collectively housed and installed in the wall hole of the bathroom, which is a characteristic feature of the present invention. It is also a characteristic feature of the present invention that, in the bath kettle, all the device parts except for the washing nozzle and the drainage means for draining water from the bathtub are housed and installed in the wall holes of the bathroom.

[Action]

When the bathtub is cleaned using the bathtub cleaning apparatus of the present invention, the cleaning is performed, for example, by storing a cleaning liquid sufficient to normally operate the pump on the bottom of the bathtub or in the return pipe.
In this operation, first, a required amount of detergent is introduced into the circulation path of the cleaning liquid from the detergent introduction device, water is supplied from the water supply unit to the circulation path, and the cleaning liquid obtained by mixing the detergent and water (or hot water) is supplied to the bottom of the bathtub or Collect in return pipe. The control device grasps the amount of water supplied from the water supply unit by the detection signal of the water amount detection means, and controls the water supply unit when the cleaning liquid accumulated on the bottom of the bathtub or the return pipe becomes sufficient to normally operate the pump. To stop water supply.

Next, the pump is activated, and the cleaning liquid stored in the bottom of the bathtub or the return pipe is guided to the cleaning nozzle through the circulation pipe by driving the pump. At this time, the cleaning liquid is heated by the heater when passing through the circulation pipe, and is heated (heated) to a temperature suitable for exerting the chemical cleaning ability, and the heated cleaning liquid is supplied from the cleaning nozzle into the bathtub. The water is circulated and sprayed toward the wall surface, and the stain on the inner wall surface of the bathtub is effectively removed by the chemical impingement force due to the impingement force.

Next, clean water (or hot water) containing no detergent is guided from the water supply unit to the cleaning nozzle, and is sprayed from the cleaning nozzle toward the bathtub wall surface. By this spraying, the cleaning liquid adhering to the inner wall surface of the bathtub and the dirt component dropped by the cleaning liquid are washed out and discharged by the drainage means, thereby completing the automatic cleaning of the bathtub.

In the automatic bath kettle equipped with the bathtub cleaning device, after the bathtub cleaning, by opening a pouring on / off valve, hot water is dropped from the water heater into the bathtub through the cleaning liquid circulation pipe, and the bathtub is cleaned. Of hot water is performed. In this configuration, the return pipe of the cleaning liquid circulation pipe is provided with a return pipe opening / closing valve and branched into a first return branch pipe and a second return branch pipe.
The hot water supplied from the water heater side is dropped into the bath tub from both sides of the washing nozzle and the second return branch pipe by switching the flow path to the second return branch pipe and performing hot water filling.
During the filling, the filling level is detected by a water level sensor connected to the first return branch pipe, and the filling operation stops when the filling level reaches the set level. Is done.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a system configuration of a first embodiment of the present invention.

This embodiment shows a system of a bathtub cleaning apparatus. A drainpipe 2 is connected to the bottom of a bathtub 1, and the drainpipe 2 is provided with a drainage valve 3 such as an electromagnetic valve. The pipe 2 and the drain valve 3 constitute drainage means. A pair of cleaning nozzles 4a and 4b are attached to the opposite side wall surface of the bathtub 1 with the injection holes facing the inner wall surface of the bathtub. The cleaning nozzles 4a and 4b have a built-in valve mechanism, and can open and close the injection holes. The cleaning nozzles 4a and 4b have branch outgoing pipes 5a and 5b.
Are connected, and the branching outgoing pipes 5a and 5b merge into a single outgoing pipe 5 which is an electric heater functioning as a heating heater.
It is connected to the discharge side of the pump 12 via 20.

An inlet side of the return pipe 10 is connected to the bottom side of the bathtub 1 and an outlet side of the return pipe 10 is connected to a suction side of the pump 12 via a return pipe opening / closing valve 6 such as an electromagnetic valve. . In addition, a water flow sensor 13 for detecting the flow of the liquid is provided in the conduit of the return pipe 10. On the other hand, a temperature sensor 14 for detecting the temperature of the fluid flowing in the pipe is provided in a portion of the pipe 18 extending from the discharge port of the pump 12 to the electric heater 20,
The detergent supply pipe 15 and the water supply pipe 22 are connected, and the detergent supply pipe
15 is a detergent tank via a detergent opening / closing valve 16 composed of an electromagnetic valve and the like.
Connected to 17. The detergent supply pipe 15 and a detergent on-off valve
16 and the detergent tank 17 constitute a detergent introduction device,
Liquid detergent is stored in the detergent tank 17. The inlet side of the water supply pipe 22 is connected to a water supply source such as tap water through a water supply opening / closing valve 21 such as an electromagnetic valve. By the way, the return pipe 10
Outgoing pipe 5 with electric heater 20 incorporated into pump 12
The pipes that pass through the cleaning nozzles 4a and 4b form a circulation path for the cleaning liquid, and the path that closes the circulation path via the bathtub 1 forms a circulation path for the cleaning liquid.

The drain valve 3, the cleaning nozzles 4a and 4b, and the detergent on / off valve 16
A control device controls the opening and closing of the flow path (valve opening and closing) with the water supply opening and closing valve 21, the operation control of the pump 12, and the heating control of the electric heater 20.
23. The control device 23 includes a remote control 24
The remote control 24 is provided with a cleaning button 25 for performing a cleaning operation.

As shown in FIG. 2, the control device 23 includes a signal input unit 28.
, A determination / instruction unit 29, a timer 30 functioning as a water amount detection unit, a calculation unit 31, and a memory 32. The signal input unit 28 receives a signal from the remote controller 24, a water flow detection signal from the water flow sensor 13, and a temperature detection signal from the temperature sensor 14, and adds these signals to the determination / command unit 29. The determination / instruction unit 29 receives the signal from the signal input unit 28 and the information of the program provided to the memory 32, grasps the progress of the bath tub cleaning operation program, and, if necessary,
The timer 30 is instructed to operate the timer, and the arithmetic unit 31 is instructed to calculate the amount of cleaning liquid stored on the bottom of the bathtub 1 at the start of cleaning, that is, the minimum amount of water required for normal operation of the pump. In addition, an opening / closing control signal (on / off signal) is output to various valves 3, 6, 16, 21 and washing nozzles 4a, 4b as appropriate, and operation of the pump 12 and electric heater 20 are controlled.
Is controlled. As described above, the memory 32 has a built-in bath tub cleaning operation program and, if necessary,
The calculation result of the calculation unit 31 is stored.

Although the apparatus of this embodiment is installed in a bathroom, the washing nozzles 4a and 4b, the drain valve 3 and the remote
It is also possible to unitize the device part excluding 4 and store it in a wall hole or the like in the bathroom.

This embodiment is configured as described above. Hereinafter, an example of the bathtub cleaning operation will be described with reference to the flowchart shown in FIG. First, when the cleaning button 25 of the remote controller 24 is turned on, this ON signal is applied to the judgment / instruction unit 29 via the signal input unit 28 of the control unit 23, and the control unit 23 (judgment / instruction unit 29) receives the ON signal. The drain valve 3 is opened by the control signal and the bathtub 1 is opened.
If there is dirty hot water inside, drain it.
At the same time, the valves of the cleaning nozzles 4a and 4b are opened in step 102, and the circulation pipe is released to the atmospheric pressure so that the detergent in the detergent tank 17 can easily enter the circulation pipe. Then, it is determined in step 103 whether or not the drainage of the hot water has been completed.

That is, the control device 23 determines in step 101 that the drain valve 3
After sending the open signal to the timer, it is determined by a timer whether or not the time T required for the hot water in the bathtub 1 to completely flow out has elapsed.
Perform using 30. The drain valve 3 is kept open as long as the T time has not elapsed.
It is determined that the hot and cold water inside has been completely drained, and step 104
Close drain valve 3 with. Then, opening the detergent-off valve 16 at step 105, at the same time, it is judged whether or not ₁ h predetermined T has elapsed in step 106. That is, the control device
23 was added to the open signal to the detergent-off valve 16, counts the time by using the timer 30, while the time T ₁ has not elapsed leave open the detergent-off valve 16, time T ₁ has passed When a predetermined amount (for example, 20 cc) of the detergent is determined to have been supplied from the detergent tank 17 to the pipe 18 through the detergent supply pipe 15,
The detergent on-off valve 16 is closed.

Next, in step 108, the cleaning nozzles 4a and 4b are closed, and in step 109, the water supply on-off valve 21 is opened. Then, the water pipe 22
Water such as tap water is supplied from the pipe 18 through the return pipe 10 to the bottom of the bathtub together with the detergent. In step 110, it is determined whether or not a minimum amount of the cleaning liquid in which the detergent and the water are mixed is stored on the bottom surface of the bathtub 1 so that the pump 12 can normally operate. More specifically, the amount of water for producing the minimum necessary washing liquid (mixing the detergent) is given in advance to the determination / instruction unit 29 of the control device 23, and the determination / instruction unit 29 supplies water in step 109. When an ON signal is applied to the on-off valve 16, a timer operation is commanded to the timer 30 functioning as a water amount detecting means, and the timer signal as the water amount detecting signal is counted. Then, when T ₂ hours have elapsed since the water supply on-off valve 21 was opened, the time-up signal was received, and it was determined that the minimum necessary cleaning liquid for normally operating the pump 12 had accumulated on the bottom surface of the bathtub 1. In step 111, the water supply on-off valve 21 is closed. If the amount of the cleaning liquid is too small, the air in the bathtub 1 is sucked from the return pipe 10 when the pump 12 is started, which impairs the smooth operation of the pump. When the amount of the cleaning liquid stored on the bottom surface of the bathtub 1 is too large, when the cleaning liquid is jetted from the cleaning nozzles 4a and 4b to the inner wall surface of the bathtub,
The collision force of the cleaning liquid sprayed on the bottom of the bathtub is weakened by the cleaning liquid thickly stored on the bottom of the bathtub 1, causing a problem that dirt on the bottom of the bathtub becomes difficult to remove. In contrast, not disturb the pumping operation by the water supply on-off valve 21 as in the present embodiment is opened only T ₂ hours to supply water,
In addition, the minimum necessary amount of the cleaning liquid that hardly weakens the collision force of the cleaning liquid jetted to the bottom of the bathtub is secured.

After the T ₂ hours have elapsed, the water supply on-off valve 21 is closed,
In step 112, the cleaning nozzle 4a is opened, and subsequently, in step 113, the pump 12 is started. When the pump 12 is started, the cleaning liquid accumulated on the bottom of the bathtub 1 is returned to the return pipe.
The suction liquid is sucked by the pump 12 through the pump 10, and the suctioned cleaning liquid is supplied from the discharge side of the pump 12 through the pipe 18 to the electric heater.
In this case, the cleaning liquid is heated to a temperature suitable for exerting the chemical cleaning ability, in this embodiment, to 50 to 60 ° C., and the heated cleaning liquid of the warm water is supplied to the forward pipe 5 and the branch forward pipe 5a. Is sprayed into the bathtub from the cleaning nozzle 4a.

The jetted cleaning liquid flows down to the bottom surface of the bathtub 1, and the cleaning liquid flowing down to the bottom surface is again sucked into the pump 12 from the return pipe 10 and similarly passed through the electric heater 20 to the forward pipe 5 and the branch forward pipe 5a. After that, it is ejected from the cleaning nozzle 4a into the bathtub. In this way, the circulating injection of the cleaning liquid is repeatedly performed through the circulation pipeline. During this circulation injection, the temperature control of the cleaning liquid is performed in steps 114 to 117.

That is, based on the temperature detection signal obtained from the temperature sensor 14, the controller 23 sets the temperature of the cleaning liquid to T ₃ ° C. (for example,
C) is determined in step 114. When the temperature of the cleaning liquid is equal to or lower than T ₃ ° C, the electric heater 20 is turned on in step 115 to heat the cleaning liquid. And step 11
It is determined again whether or not the temperature of the cleaning liquid is equal to or higher than T ₃ ° C in step 6. When the temperature of the cleaning liquid is equal to or higher than T ₃ ° C, the electric heater 20 is continuously heated when the temperature is lower than T ₃ ° C. The electric heater 20 is turned off.

Next, in step 118, the pump 12 performs a determination whether or not elapsed T ₄ hours after being started in step 113. When not elapsed of T ₄ hours repeats the operation from step 114 117 continues to control the temperature of the washing liquid circulating injection to a temperature of T _3. Step 11 when time has passed T ₄ hours
The pump 12 is stopped at 9 and then the washing nozzle is
4a is closed, and the washing nozzle 4b is opened in step 121. Next, in step 122, the pump 12 is started. Then,
This time, the cleaning liquid stored on the bottom surface of the bathtub 1 is circulated and sprayed from the cleaning nozzle 4b toward the inner wall surface of the bathtub. In steps 123 to 126, similar to the operations in steps 114 to 117,
The temperature of the cleaning liquid to be circulated and sprayed is set to T ₅ ° C (60 in this embodiment).
(° C). In step 127, step 1
22 pump 12 is determined whether the elapse of ₆ hr T after being started, when a lapse of T ₆ hours, and stop of the pump 12 at step 128, the closure of the washing nozzle 4b, drain valve 3 Is turned on (opening operation). By opening the drain valve 3, the cleaning liquid containing the dirt component accumulated on the bottom surface of the bathtub 1 is discharged from the drain pipe 2.

Next, at step 129, the water supply on-off valve 21 is opened. As a result, the water supplied from the water supply pipe 22 enters the bathtub 1 from the bottom side while washing the conduit through the return pipe 10, and the cleaning liquid and the dirt component adhering to the bottom of the bathtub 1 and the drain pipe 2 Discharge. Step water supply on-off valve 2 130 from being opened water supply on-off valve 21 at Step 131 when whether elapsed T ₇ hours have elapsed by T ₇ hours determined by using a timer 30
Close 1. Then, in step 132, the return pipe opening / closing valve 6 is closed, and then in step 133, the cleaning nozzle 4a is opened. Next, at step 134, the water supply on-off valve 21 is opened. As a result, water supplied through the water supply pipe 22 is supplied to the electric heater 20.
(Heater heating is performed if necessary), and is sprayed from the cleaning nozzle 4a toward the inner wall surface of the bath tub through the outgoing pipe 5 and the branch outgoing pipe 5a. The dropped dirt components are washed away and discharged from the drain pipe 2.

Whether injection from step 135 in the cleaning nozzle 4a has passed ₈ hours T is determined, the water supply on-off valve 21 is closed at step 136 when the T ₈ hours has elapsed. Then, in step 137, the cleaning nozzle 4a is closed, and in step 1
At 38 the cleaning nozzle 4b is opened. Next, as a result of opening the water supply on-off valve 21 in step 139, the electric heater 20 is connected to the water supply pipe.
This time, the water or hot water passing through the cleaning nozzle 4b is guided to the cleaning nozzle 4b side, and is sprayed from the cleaning nozzle 4b toward the inner wall surface of the bathtub. The injection from step 140 this washing nozzle 4b is determined whether elapsed T ₉ hours, injection stopped from washing nozzle 4b water supply on-off valve 21 is closed in step 141 when the elapsed T ₉ hours Is done. Subsequently, the washing nozzle 4b is closed in step 142, and the drain valve 3 is closed in step 143, whereby the automatic cleaning of the bathtub 1 is completed.

In this embodiment, the minimum required amount of cleaning liquid for operating the pump normally is stored on the bottom of the bathtub 1. However, the minimum required amount of cleaning liquid is small, for example, about 5 l. The depth of the cleaning liquid from the bottom is very shallow, and when the cleaning liquid is jetted from the cleaning nozzles 4a and 4b, a strong jet impingement force also acts on the bottom of the bath tub. Is not weakened, so that not only the inner surface of the side wall of the bathtub 1 but also the bottom surface can be cleaned off.

The apparatus of this embodiment uses an electric heater to heat the cleaning liquid.
Since it is performed according to 20, it is very advantageous in construction when installing the cleaning device in the bathroom. That is, when the cleaning liquid is heated by a gas or petroleum fuel type heat exchanger, a wall hole for the supply / exhaust pipe must be formed when the cleaning device is installed in the bathroom. If a heat source is used, the above-mentioned hole is unnecessary, so that it is free from a large-scale and complicated wall hole construction.

FIG. 4 shows a second embodiment of the present invention. In the second embodiment, an automatic bath is constructed by connecting a water heater to a bathtub cleaning device. In this embodiment, the return end of the return pipe 10 is provided with return pipe opening / closing valves 6a and 6b such as a solenoid valve for switching a flow path, and is branched into a first return branch pipe 10a and a second return branch pipe 10b. The return circulation port of the first return branch pipe 10a is connected to the bottom side of the bathtub 1, that is, the drain pipe 2 in this embodiment. A pressure sensor 8 functioning as a water level sensor is connected to the first return branch pipe 10a so that the water level in the bathtub 1 can be detected by the pressure sensor 8. The second return branch pipe
The return circulation port 10 b is connected to the side wall of the bathtub 1. From the second return branch pipe 10b, return pipe 10, pump 12,
A line which passes through the electric heater 20, the outgoing pipe 5, and the branch outgoing pipes 5a, 5b in order to the washing nozzles 4a, 4b constitutes a circulation pipe of hot and cold water in the bathtub 1, and also returns from the first return branch pipe 10a. Pipes that sequentially pass through the pipe 10, the pump 12, the electric heater 20, the outgoing pipe 5, and the branch outgoing pipes 5a and 5b to the cleaning nozzles 4a and 4b constitute a circulation path of the cleaning liquid.

A water heater 33 is provided adjacent to the electric heater 20. The water heater 33 is provided with a gas-fired hot water heat exchanger 34, and a hot water pipe 35 on the outlet side of the hot water heat exchanger 34 is circulated through a pouring opening / closing valve 36 such as a solenoid valve. In this embodiment, it is connected to the conduit 18. On the outlet side of the hot water supply heat exchanger 34, a tapping temperature sensor 37 for detecting tapping temperature is provided. The water supply pipe 22 is connected to the inlet side of the hot water supply heat exchanger 34, and the water supply pipe 22 is connected to a water supply source such as tap water through the flow rate sensor 11. The water supply pipe 22 is provided with a water supply temperature sensor 38 for detecting the water supply temperature.

In this embodiment, a connection A between the pipe 18 and the pouring valve 36 is provided.
A water flow sensor 13 and a temperature sensor 14 for detecting the temperature of the fluid in the pipe are provided in a pipe section between the heater and the inlet side of the electric heater 20. The pressure sensor 8 and each temperature sensor 1
The detection signals of the flow sensors 4, 37, 38, the flow sensor 11, and the water flow sensor 13 are applied to the control device 23 as shown in FIG. Note that the sensors 8, 11, 37, and 38 shown by chain lines in FIG. 2 are sensors newly added in the embodiment of FIG. The remote controller 24 connected to the controller 23 has an automatic button 26 for automatically performing operations from washing to filling with hot water.
And a hot water level setting unit 27 for setting the water level of the hot water and a bath temperature setting unit 19 for setting the bath temperature.

The control device 23 includes a signal input unit 28 as in the first embodiment.
And a determination / instruction unit 29, a timer 30, a calculation unit 31, and a memory 32. The memory 32 stores a program for continuously performing operations from washing to filling with hot water. The determination / instruction unit 29 receives a signal from the remote controller 24 and a signal from each of the sensors 8, 11, 13, 14, 37, and 38, and according to a program stored in the memory 32, opens and closes various valves and pumps. The operation and the heating of the electric heater 20 and the operation control of the water heater 33 are performed to control the operation of the automatic operation. Reference numeral 40 denotes a bathtub unit in which the cleaning nozzles 4a and 4b, a part of the bathtub cleaning device excluding the drain valve 3 and the water heater 33 are integrated, and the bathtub unit 40 is inside the bathroom, outside the bathroom, or It is installed at an appropriate place such as a wall hole in a bathroom.

Next, an example of automatic operation from washing of the bathtub to filling with hot water will be described based on the flowchart of FIG. First, the hot water level setting unit 27 sets the hot water level, the bath temperature setting unit 19 sets the hot water temperature of the bath, and then turns on the automatic button 26 of the remote control 24. It is added to the judgment / command unit 29 via the input unit 28. The judgment / command unit 29 receives the command of the automatic operation mode, and
Preparatory operation for detergent introduction to open the circulation pipe to the atmosphere is performed until 05.

That is, in step 101, a water level detection signal from the pressure sensor 8 is received, and it is determined whether or not there is hot water in the bathtub 1. When the inside of the bathtub 1 is empty, the detergent opening / closing valve 16 is opened in step 106, and the operation shifts to a detergent charging operation. On the other hand, when the water level is detected and it is determined that there is hot water in the bathtub, the washing nozzles 4a and 4b are opened in the next step 102, and at the same time, the return pipe opening / closing valve 6b is opened. Next, at step 103, the drain valve 3 is opened to start draining the warm water in the bathtub 1. With the drainage of the hot water, the level of the hot water accumulated in the bathtub gradually decreases, and when the water level falls below the injection holes of the cleaning nozzles 4a and 4b, the air pressure from the injection holes of the cleaning nozzles 4a and 4b is reduced to the pipe side. The hot and cold water that has accumulated in the circulation conduit enters the bathtub from the return circulation port of the second return branch pipe 10b as the water level in the bathtub 1 decreases. Then, when the water level in the bathtub drops below the return circulation port, the circulation pipe is drained except for the first return branch pipe 10a, and all the water is opened to the atmosphere.

The reduced state of the bathtub water level due to the drainage is detected by the pressure sensor 8 from time to time. And bathtub 1 in step 104
It is determined whether the inside is empty. When the water level is detected by the pressure sensor 8, it is determined that the inside of the bathtub 1 is not empty, and when the detection signal of the pressure sensor 8 detects the reference pressure that the bathtub is empty, the bathtub 1 becomes empty. The drain valve 3 is closed in step 105.
By the operations of steps 101 to 105, the inside of the circulation line is opened to the atmosphere, and the detergent is easily put into the circulation line. In this state, the detergent release valve 16 is opened in step 106, and the detergent is supplied from the detergent tank 17 into the circulation pipe, in this embodiment, into the pipe 18. At the same time, step 107
In it it is judged whether or not a predetermined time T ₁ has elapsed. That is, the control unit 23 after adding an open signal to the detergent-off valve 16, counts the time by using the timer 30, while the time T ₁ has not elapsed leave open the detergent-off valve 16, T _{When one} hour has elapsed, it is determined that a predetermined amount (for example, 20 cc) of detergent has been supplied from the detergent tank 17 through the detergent supply pipe 15 into the pipe line 18, and the detergent on-off valve 16 is closed.

Next, the operation proceeds to the cleaning operation from steps 109 to 148. In step 109, the hot water supply on-off valve 36 is opened, and burner combustion of the hot water supply heat exchanger 34 is performed. Then, hot water of S ₁ ° C is dropped into the circulation pipeline. The dropped hot water passes through the outgoing pipe 5 and is supplied into the bathtub 1 from the washing nozzles 4a and 4b. On the other hand, the hot water passing through the return pipe 10 is supplied to the second return branch pipe together with the detergent.
Get into the bathtub through 10b. As a result, a cleaning liquid in which hot water and a detergent are mixed accumulates in the bathtub 1. Step 11
0 In the amount of the hot water supplied to the tub determines whether or not becomes a predetermined X ₁ l. That is, the determination / instruction unit 29 receives a signal (detection signal) from the flow rate sensor 11 functioning as a water amount detection unit, and causes the calculation unit 31 to cumulatively calculate the supplied water amount every moment. As long as the calculated water volume does not reach X ₁ l, the pouring on / off valve 3
6 is kept open, and when the calculated water volume reaches X ₁ l, the pouring on-off valve 36 is closed. By supplying the hot water of X ₁ l to the bathtub 1, a minimum amount of a cleaning liquid (a mixed liquid of hot water and a detergent) necessary for smoothly operating the pump 12 is stored on the bottom side of the bathtub 1.

After the hot water of the X ₁ l is supplied, pouring off valve 36 is closed, hot water supply is stopped. Next, in step 112, the cleaning nozzle 4
b and the return pipe opening / closing valve 6b are closed, and the return pipe opening / closing valve 6a is opened. Then, in step 113, the pump 12 is started. By the activation of the pump 12, the cleaning liquid accumulated at the bottom of the bathtub 1 passes through the first return branch pipe 10a and passes through the pump 1
2 and the suctioned cleaning liquid is pump 12
Through the electric heater 20 from the discharge side, where the cleaning liquid is at a temperature suitable for exerting the chemical cleaning ability, in this embodiment
The cleaning liquid is heated to 50 to 60 ° C., and the heated cleaning liquid of hot water is injected into the bathtub from the cleaning nozzle 4 a through the outward pipe 5.

The jetted cleaning liquid flows down to the bottom side of the bathtub 1, and the cleaning liquid flowing down to the bottom side is again sucked into the pump 12 from the first return branch pipe 10 a, and similarly passes through the electric heater 20, and then flows through the cleaning nozzle. Squirted into the bathtub from 4a.
In this way, the circulation jet of the cleaning liquid is repeatedly performed through the circulation pipeline. During this circulation injection, the temperature control of the cleaning liquid is performed in steps 114 to 117.

That is, based on the temperature detection signal obtained from the temperature sensor 14, the controller 23 sets the temperature of the cleaning liquid to S ₂ ° C (for example, 60
C) is determined in step 114. When the temperature of the cleaning liquid is equal to or lower than S ₂ ° C, the electric heater 20 is turned on in step 115 to heat the cleaning liquid. And whether or not the temperature of the cleaning liquid is S ₂ ° C. or higher in step 116 it is determined again, subsequently heated by the on-operation of the electric heater 20 when lower than S ₂ ° C., the temperature of the cleaning liquid S ₂ ° C. or higher When it becomes, the ON drive of the electric heater 20 is stopped.

Next, at step 118, after pump 12 is started, T ₂
It is determined whether or not time has elapsed. When not elapsed T ₂ hours repeats the operation from step 114 117 continues to control the temperature of the washing liquid circulating jetting temperature of S _2. Pump 1 in step 119 when time has elapsed T ₂ hours
Step 2 is stopped, and in step 120, the cleaning nozzle 4a is closed, and the cleaning nozzle 4b is opened. Then, in step 121, the pump 12 is started again. Then, from the bathtub 1, the first return branch pipe 10
The cleaning liquid circulated through a is jetted into the bath from another cleaning nozzle 4b through the electric heater 20, and the circulating injection of the cleaning liquid is repeatedly performed. At this time, the temperature control of the cleaning liquid is performed in the same manner as the operations from Step 114 In steps 122 125 117, the cleaning liquid S ₃ ° C.
(For example, 60 ° C.) and sprayed into the bathtub 1.

Determining pump from startup whether T ₃ hours has elapsed in step 126 In step 121 is performed similarly to the step 118, the pump 12 at step 127 when the elapsed T ₃ hours
Is stopped, and then in step 128 the drain valve 3 is opened. Subsequently, at step 129, the return pipe on-off valve 6a is closed,
The cleaning liquid in the bathtub 1 is drained. Next, in step 130, the pouring on / off valve 36 is opened, and hot water of S ₄ ° C is supplied to the washing nozzle 4b from the hot water supply heat exchanger 32 while washing the inside of the outgoing pipe 5, and the hot water is supplied from the washing nozzle 4b. Injected into the bathtub inner wall,
The cleaning liquid adhering to the inner wall surface of the bathtub and the dirt components removed by the cleaning liquid are washed off to the bottom side of the bathtub 1 and discharged. In step 131, the cleaning time with this hot water is T ₄
It is determined whether the elapsed time, when the T ₄ hours have elapsed to stop injection of the hot water from the cleaning nozzle 4b closed pouring off valve 36 at step 132. Then, in step 133, the cleaning nozzle 4a is opened and the cleaning nozzle 4b is closed. Then step 13
The pouring on / off valve 36 is opened in 4 and the hot water on the water heater 33 side is supplied to the washing nozzle 4a, and the hot water is similarly sprayed from the washing nozzle 4a toward the inner wall surface of the bathtub, and the inner wall surface of the bathtub is washed while the pipe is washed. Remove the washing solution. Then, when _five hours of the injection T of the hot water from the cleaning nozzle 4a have elapsed, in step 136, the pouring on / off valve 36 is closed to stop the injection of the hot water, and in step 137, the cleaning nozzle 4a is closed.

Next, from step 138 to step 142, the second return branch pipe 10
The washing in the pipeline of b is performed. That is, in step 138, the return pipe on-off valve 6b is opened, and subsequently, the pouring on-off valve 36 is opened. As a result, the hot water from the hot water supply heat exchanger 34 is returned to the return pipe 10
Through the return pipe opening / closing valve 6b and into the second return branch pipe 10b. The washing liquid in the second return branch pipe 10b is washed into the bathtub 1 and discharged. Pouring off valve 36 when the hot water washing in the second return branch pipe 10b has passed T ₆ hours
, The hot water washing of the second return branch pipe 10b is stopped, and the return on-off valve 6b is closed. Next, in steps 143 to 147, the hot water in the first return branch pipe 10a is similarly washed. In this hot water washing, the return pipe opening / closing valve 6a is opened, the hot water on the side of the hot water supply heat exchanger 34 is poured, and the hot water opening / closing valve 36 is opened.
This is done by passing through a. This first return branch pipe 10a
After the hot water wash was performed T ₇ hours, pouring off valve 36 is closed in step 146, a return pipe on-off valve 6a is closed step 147, followed by drain valve 3 in step 148 is closed.

Next, the process proceeds to the filling operation of steps 149 to 152. First, in step 149, the cleaning nozzles 4a and 4b are opened, and at the same time, the return pipe opening / closing valve 6b is opened. Next, in step 150, the pouring on / off valve 36 is opened, and the hot water flowing out of the hot water supply heat exchanger 34 is supplied to the circulation pipe side, passes through both the return pipe 10 and the forward pipe 5, and the cleaning nozzles 4a, 4b and the second From the opening of the return branch pipe 10b into the bathtub. Then, the water level of the hot water in the hot water is detected by the pressure sensor 8. Step 151
Then, based on the water level detection signal from the pressure sensor 8, it is determined whether or not the detected water level has reached the water level set by the hot water level setting section 27 of the remote controller 24. The hot water on-off valve 36 is closed, and the hot water filling operation is stopped. In this filling operation, since the hot water on the water heater side is simultaneously dropped from the outgoing pipe 5 and the return pipe 10 side, the filling water amount becomes large, and the filling can be completed in a short time.

When the hot water is cooled after the completion of the hot water filling, the pump 12 is started and the hot water in the bathtub 1 is returned from the second return branch pipe 10b to the return pipe 10, the pipe 18, the electrification heater 20, the forward pipe 5, and The water is discharged from the cleaning nozzles 4a and 4b into the bathtub through the branch outgoing pipes 5a and 5b and circulated, and the circulating hot water is heated by the electric heater 20 to keep the hot water in the bathtub 1 at the set temperature of the bath water temperature. Boiling control can be performed, and in some cases, high-temperature hot water can be poured into the bathtub 1 from the water heater through the circulation pipe, and the hot water in the bathtub can be additionally heated by the hot water.

FIG. 6 shows the embodiment of FIG. 3 of the present invention.
This embodiment, like the second embodiment, relates to an automatic bath kettle provided with a cleaning device, and differs from the second embodiment in that a detergent opening / closing valve 16 and a detergent tank 17 are provided. Detergent input device, return pipe opening / closing valves 6a, 6b, pressure sensor 8
The washing unit 41 is installed in a dead space between the bathroom wall surface 42 and the side wall surface of the bathtub 1, and the inlet of the detergent into the detergent tank 17 is located at the upper end of the bathtub 1. Open to the wet edge. Then, each of the temperature sensors 14, 37, 38, the electric heater 20, the water flow sensor 13, the pump 12, the pouring on / off valve 36, the hot water supply heat exchanger 34, the flow sensor 11, and the control device 23 Configured as device unit 43,
This equipment unit 43 is installed at a location away from the bathroom. The other configuration is the same as that of the second embodiment.
In this embodiment, since the cleaning unit 41 is installed near the bathtub in the bathroom, the length of the conduit between the unit 41 and the bathtub 1 can be shortened, and the detergent is supplied at the start of bathtub cleaning. Preparation operation, return pipe opening and closing 6b and each washing nozzle 4a, 4
When b is opened to open the circulation pipe to the atmosphere, the pipe can be reliably opened to the atmosphere (water drainage of the pipe). For example, when the bathtub is on the second floor and the cleaning unit 41 is installed on the first floor, the length of the pipe between the bathtub and the cleaning unit becomes long, and the pipe is filled with water. In this case, even if the washing nozzles 4a and 4b and the return pipe opening / closing valve 6b are opened, water in the pipe may not be effectively discharged, and the pipe may not be reliably released to the atmosphere. On the other hand, as in the present embodiment, the cleaning unit 41
If such is installed in the vicinity of the bathtub 1, such a problem does not occur, and the inside of the pipeline can be reliably opened to the atmosphere, and the detergent can be reliably charged into the circulation pipeline.

Further, by providing the cleaning unit 41 separately from the equipment unit 43 side, the cleaning unit 41 can be compactly assembled, and the unit 41 is combined with the bathtub 1 as shown in FIG.
It is easy to install using the dead space below the upper edge wet edge of the above, and it is also easy to install this cleaning unit 41 in the wall hole of the bathroom.

Further, if the cleaning unit 41 is installed on the side wall side near the bathtub 1, the height difference between the pressure sensor 8 and the water level of the bathtub can be reduced, and the cleaning unit 41 is provided with a height difference outside the bathroom. It is possible to use a sensor with a narrower range of pressure detection than when it is located. When using a generally used pressure sensor with a large range, sensitivity can be increased by switching the range.
The effect is obtained that a change in the minute water level can be detected more accurately.

FIG. 7 shows the system configuration of the embodiment shown in FIG. 4 of the present invention. The fourth embodiment is different from the third embodiment in that the equipment unit 43 of the third embodiment is housed and installed in a wall hole 44 of a bathroom. The other configuration is the same as that of the third embodiment. In the present embodiment, the wall hole 44 is provided on the outer wall 45 of the bathroom, and this wall hole 44 may be newly provided, but when the wall hole for the supply / exhaust tube of the balance bath is already opened. This wall hole can also be used. In the present embodiment, since the heater for heating the cleaning liquid is constituted by the electric heater 20, the heater can be formed in a small size. Therefore, the equipment unit 43 combining the electric heater 20 and the water heater 33 is also provided. It is compact and convenient to place in the wall hole 44. When the heating source for heating the cleaning liquid is constituted by a gas-fired heat exchanger, the combination of the cleaning liquid heating source and the water heater 33 increases the size of the apparatus and makes it difficult to dispose the cleaning liquid in the wall hole 44. However, as described above, in the present embodiment, the heating of the cleaning liquid is performed by the electric heater 20, so that the device unit 43 can be significantly reduced in size,
It can be installed in the wall hole 44 without any trouble.

Note that the present invention is not limited to the above embodiments, and various embodiments can be adopted. For example, in the first embodiment, the water amount detecting means is constituted by the timer 30, and in the second and subsequent embodiments, the water amount detecting means is
Although the pressure sensor 8 is constituted by 11, the pressure sensor 8 can be constituted as a water amount detecting means. In this case, the water pressure of the cleaning liquid stored on the bottom surface of the bathtub 1 is detected, and the detected water pressure is applied to the signal input unit 28 of the control device 23 as a water amount detection signal. That is, when the cleaning liquid is stored on the bottom surface of the bathtub 1 during cleaning, the detected water pressure increases as the amount of water mixed with the detergent supplied from the water supply pipe 22 increases. Control device 23
The set water pressure (actually, the voltage value) corresponding to the minimum amount of the cleaning liquid necessary for normally operating the pump 12 is given to the judgment / instruction unit 29 in advance, and the detected water pressure becomes the set water pressure. The water supply on-off valve 21 is configured to be closed on the assumption that the amount of the cleaning liquid stored on the bottom surface of the bathtub 1 sometimes becomes a necessary minimum amount. Of course, in the first embodiment, for example, as shown by a broken line in FIG. 1, a flow sensor 11 is provided in the water supply pipe 22, and this flow sensor 11 is used as a water amount detecting means, similarly to the second embodiment. can do.

Further, in each of the above embodiments, the minimum washing liquid necessary for the normal operation of the pump 12 was stored on the bottom surface of the bathtub 1.
It may be stored in the return pipe 10 of FIG. 1 or in the first return branch pipe 10a of FIGS. 4, 6, and 7.

Further, in each of the above embodiments, the cleaning nozzles 4a and 4b are constituted by nozzles having a built-in valve mechanism, but may be constituted by ordinary nozzles without a valve mechanism. In this case, a flow path switching valve such as an electromagnetic valve for switching the flow path of the branch outgoing pipes 5a, 5b may be provided so that the cleaning liquid or water (or hot water) is sequentially injected from the cleaning nozzles 4a, 4b.

Further, in the automatic bath kettles with cleaning devices according to the second to fourth embodiments, the heating source of the water heater 33 is constituted by a gas-fired hot water heat exchanger 34. It can also be constituted by a heating source of the formula.

〔The invention's effect〕

In the present invention, since the cleaning liquid is heated and sprayed, the chemical cleaning power is enhanced, and the dirt can be cleanly removed over the entire inner wall surface of the bathtub in combination with the cleaning liquid jet collision force.

In addition, since the heated cleaning liquid is repeatedly circulated and sprayed onto the inner wall surface of the bathtub, there is no waste of detergent, which is very economical.

Furthermore, at the time of cleaning, since the cleaning liquid sufficient to allow the pump to operate normally is stored in the bottom of the bathtub or in the return pipe, there is no need to provide a tank for storing this cleaning liquid at the bottom of the bottom of the bathtub. Accordingly, the apparatus configuration can be simplified, and the workability of piping construction can be facilitated, and the excellent apparatus of the present invention can be provided at low cost.

Further, in the present invention, since the heating source for heating the cleaning liquid is constituted by a heater, the apparatus can be significantly reduced in size as compared with the case where the heating source is constituted by a gas combustion type heating source, and the interior of the bathroom can be reduced. It can be installed in a dead space in a bathroom, a wall hole in a bathroom, or the like without reducing the effective use space. Further, even in the case where the bath tub cleaning device is combined with a water heater to constitute an automatic bath pot, the heating source of the cleaning liquid is constituted by a heater, so that the automatic bath pot can be downsized. It becomes easy to provide the automatic bath pot in the wall hole of the bathroom, and similarly, it becomes possible to easily install the excellent automatic bath pot of the present invention without narrowing the effective use space of the bathroom.

Further, among automatic bath kettles, in which a return pipe opening / closing valve, a water level sensor, and a detergent charging device are integrated and separately formed as a cleaning unit, the cleaning unit is disposed between a bathroom side wall surface and a bathroom wall surface. In addition to being able to be installed compactly in the dead space, etc., the length of the pipeline between the cleaning unit and the bathtub can be shortened. It can be done reliably.

Further, in the automatic bath kettle of the present invention, the return pipe of the circulation pipe is provided at the return pipe opening / closing valve, and the first return branch pipe communicating with the bottom of the bathtub is connected to the wall of the bathtub at another position. 2
And the first return branch pipe is provided with a water level sensor for detecting the water level of the bathtub.
When filling the bathtub from the water heater side, the flow path of the return pipe is switched to the second return branch pipe side, and the second return branch is detected while detecting the water level of the hot water on the first return branch pipe side. Since the hot water can be dropped from both sides of the pipe and the outgoing pipe, the filling can be completed in a short time, and the filling water level can be accurately controlled. Further, since the water level sensor is provided on the first return branch pipe communicating with the bottom surface side of the bathtub, it is possible to accurately detect the water level in the bathtub over the entire section from the bottom surface of the bathtub to the set water level of hot water. Becomes possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system configuration diagram of a bath tub cleaning device showing a first embodiment of the present invention, and FIG. 2 is a main portion configuration diagram showing an example of a control device constituting the device of the present invention. FIG. 3 is a flow chart showing a bath tub cleaning operation of the first embodiment, FIG. 4 is a system configuration diagram of an automatic bath pot showing a second embodiment of the present invention, and FIG. 5 is an operation of the same embodiment. FIG. 6 is a flowchart showing the system configuration of an automatic bath kettle according to a third embodiment of the present invention.
FIG. 7 is a system configuration diagram of an automatic bath kettle showing a fourth embodiment of the present invention. 1 ... bathtub, 2 ... drain pipe, 3 ... drain valve, 4a, 4b ...
Cleaning nozzle, 5 ... Outgoing pipe, 5a, 5b ... Branch outgoing pipe, 6, 6a, 6b
…… Return pipe open / close valve, 8 …… Pressure sensor, 10 …… Return pipe,
10a ... first return branch pipe, 10b ... second return branch pipe,
11… Flow sensor, 12… Pump, 13… Water flow sensor,
14 ... temperature sensor, 15 ... detergent supply pipe, 16 ... detergent on-off valve, 17 ... detergent tank, 18 ... conduit, 19 ... bath temperature setting part, 20 ... electric heater, 21 ... water supply On-off valve, 22 ... water supply pipe, 23 ... control device, 24 ... remote control, 25 ... washing button, 26 ... automatic button, 27 ... hot water level setting section, 28
…… Signal input section, 29 …… Judgment / command section, 30 …… Timer,
31 ... Calculation unit, 32 ... Memory, 33 ... Hot water supply unit, 34 ... Hot water supply heat exchanger, 35 ... Hot water supply pipe, 36 ... Pour hot water on / off valve, 37 ...
Hot water temperature sensor, 38… Water supply temperature sensor, 40… Bath kettle unit, 41… Cleaning unit, 42… Bathroom wall surface, 43…
… Equipment unit, 44 …… Wall hole, 45 …… Outer wall.

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Toshiya Okano 3-4 Fukamidai, Yamato-shi, Kanagawa Prefecture Inside Gaster Co., Ltd. (56) References JP-U 4-28866 (JP, U) (58) Investigated Field (Int.Cl. ⁶ , DB name) A47L 25/00 A47K 3/00

Claims (5)

(57) [Claims] 1. A cleaning nozzle arranged toward an inner wall surface of a bath tub, and a return pipe connected to a bottom surface of the bath tub and having a circulation pipe extending from the return pipe to a cleaning nozzle through a pump and an outgoing pipe in order. A heater for heating the circulating cleaning liquid incorporated in the circulation pipe, a detergent charging device for charging the cleaning liquid into the circulation path of the cleaning liquid including the bathtub, and supplying clean water or hot water containing no detergent to the circulation path. A water supply unit, a temperature sensor that detects the temperature of the circulating cleaning liquid, a water amount detection unit that directly or indirectly detects the amount of water or hot water supplied from the water supply unit to the circulation path, and drains water in the bathtub. Drainage means
The amount of water supplied from the water supply unit to be mixed with the detergent is determined based on the detection signal of the water amount detection means, a cleaning liquid sufficient to normally operate the pump is prepared and stored in the circulation path, and the heater is controlled based on the temperature detection signal. A bathtub cleaning device having a control device for controlling the temperature of the circulating cleaning liquid and controlling the operation of the pump, the water supply unit, and the drainage unit in accordance with a predetermined cleaning operation program to control the cleaning operation. . 2. A washing nozzle arranged toward an inner wall surface of a bathtub, a return pipe communicating with a bottom surface of the bathtub, a circulation pipe extending from the return pipe to the washing nozzle through a pump and an outgoing pipe in order. A heater for heating the circulating cleaning liquid incorporated in the circulation conduit, a detergent charging device for charging the cleaning liquid into the circulation path of the cleaning liquid including the bathtub, and a circulation pouring valve connected to the circulation path. A water heater, a temperature sensor for detecting the temperature of the circulating cleaning liquid, a water amount detecting means for directly or indirectly detecting the amount of water or hot water supplied from the water heater to the circulation line, and draining water in the bathtub Draining means, and determining the amount of water supplied from a water heater to be mixed with the detergent based on the detection signal of the water amount detecting means to produce a cleaning liquid sufficient to allow the pump to operate normally, store the cleaning liquid in the circulation path, and store the temperature detection signal. Based on The temperature of the circulating cleaning liquid is controlled by controlling the heater, and the operation of the pump, the water heater, the pouring on / off valve, and the drainage means is controlled in accordance with the programs of the cleaning operation and the filling operation which are given in advance to perform the cleaning operation. An automatic bath kettle provided with a bath tub cleaning device having a control device capable of controlling hot water filling operation. 3. A return pipe having a return pipe opening / closing valve for switching a flow path, a first return branch pipe connected to the bottom of the bathtub and a second return branch pipe connected to a wall surface of the bathtub. 3. The first return branch pipe is provided with a water level sensor for detecting a water level in a bathtub, and the return pipe opening / closing valve, a water level sensor, and a cleaning input device are integrally formed as a cleaning unit. 4. Automatic bath kettle equipped with a washing device. 4. An automatic bath kettle provided with a washing device according to claim 2, wherein the water heater, the pump and the heater are integrated and accommodated in a wall hole of the bathroom. 5. The bathtub cleaning apparatus according to claim 1, wherein all of the device parts except the cleaning nozzle and the drainage means for draining the water from the bathtub are accommodated and installed in the wall holes of the bathroom. Automatic bath kettle with washing device.