JP2584342Y2 - Bathtub cleaning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a bathtub cleaning device having a bath reheating function and a bathtub automatic cleaning function.

[Conventional technology]

As a device for automatically cleaning the bathtub,
A gazette is known. This apparatus is provided with one washing nozzle for spraying a washing liquid containing a detergent in a lid of a bathtub and one water spray nozzle for spraying washing water such as tap water. The cleaning liquid is supplied to the cleaning nozzle by a pump, and the cleaning liquid is injected into the bath to remove dirt. The dirt component of the bathtub and the cleaning liquid that have been dropped are washed away and discharged from the drain hole.

However, in this conventional apparatus, since the cleaning liquid is jetted at a normal temperature, there is a problem that the chemical cleaning ability of the cleaning liquid is inferior and the inner wall surface of the bathtub cannot be efficiently cleaned. Further, since the cleaning liquid sprayed from the cleaning nozzle is not used repeatedly and flows out from the drain hole together with the cleaning water to be sprayed next, there is waste in using the detergent.

The inventors of the present invention have conducted research on trial manufacture and have succeeded in developing a cleaning apparatus capable of solving these problems. In this development device, a cleaning nozzle is arranged on the inner wall surface of the bathtub, and the heated cleaning liquid is sprayed from the cleaning nozzle into the bathtub to spread the cleaning liquid to all corners of the inner wall surface of the bathtub and to remove the cleaning liquid accumulated on the bottom side of the bathtub. The washing nozzle is circulated and repeatedly jetted from the washing nozzle, and thereafter, washing water such as tap water is jetted from the washing nozzle to discharge the dirt component on the wall surface of the bathtub and the washing liquid from the outlet of the bathtub.

According to this development device, the cleaning liquid jetted from the cleaning nozzle is heated, so the chemical cleaning power is also increased, the inner wall surface of the bathtub can be effectively cleaned, and the cleaning liquid is circulated and used repeatedly. Waste can be prevented.

[Problems to be solved by the invention]

However, since the development device is a system in which a circulation line for washing liquid circulation and injection is separately and independently provided in addition to the reheating circulation line of the bath kettle, not only the line configuration becomes complicated, but also the circulation line is used. There is waste in equipment utilization that the pump and the heat source for heating the circulating fluid must be provided separately in separate circulation systems.

The present invention has been made in order to solve the above-mentioned problem, and an object of the present invention is to simplify the pipeline configuration by configuring the circulation pipeline of the additional hot water and the circulation channel of the cleaning liquid with the same dual-purpose pipeline. Another object of the present invention is to provide a bath tub cleaning device that can use a heating source and a pump for a fluid in common for reheating and for circulating and jetting a cleaning liquid, thereby reducing waste of equipment usage.

[Means for solving the problem]

The present invention is configured as follows to achieve the above object. That is, the bath tub cleaning device of the present invention is the first type.
In addition, a cleaning nozzle installed on the bathtub wall and spraying the cleaning liquid toward the inner wall surface of the bathtub, and a built-in pump that sucks and collects the cleaning liquid injected on the inner wall surface of the bathtub from the return pipe and supplies the cleaning liquid to the cleaning nozzle via the forward pipe A circulation line and a control unit for controlling the circulating injection of the cleaning liquid; and a heating source incorporated in the circulation line to heat the circulating cleaning liquid to a predetermined temperature. A detergent supply source is connected through a pipe, an inlet end of the return pipe is directly communicated with a bottom wall of the bathtub, the cleaning nozzle also serves as a discharge part of a hot water recirculation circulation, and heats the cleaning liquid. The source is also used as a reheating heater for hot water, and the circulation line for the cleaning liquid is also used as a reheating line for the bath. The washing nozzle is in the back of the bathtub A nozzle opening / closing valve controlled by a control unit is provided at a forward pipe connected to at least a washing nozzle on the backrest side, which is provided on a plurality of walls and other walls, and the control unit is a reheating unit of the apparatus. In operation, it is configured to close and control a nozzle on / off valve communicating with the washing nozzle on the backrest side, and the circulation line is further connected to a water supply pipe via a water supply on / off valve. The return pipe has a return pipe opening / closing valve,
A nozzle opening / closing valve is provided on the forward pipe so as to be opened / closed by a control unit. The control unit opens the water supply opening / closing valve and fills the bathtub with water. Is also a feature of the present invention.

[Action]

In the present invention, when cleaning the bathtub, when the pump is started and the cleaning liquid containing the detergent is injected from the cleaning nozzle toward the inner wall surface of the bathtub, the injected cleaning liquid collides with the inner wall surface of the bathtub to remove dirt, and then the bathtub is washed. Runs down to the bottom side of the. And
The cleaning liquid is suctioned by the pump via the return pipe, guided again to the cleaning nozzle from the discharge side of the pump through the outward pipe, and repeatedly circulated and injected from the cleaning nozzle toward the inner wall surface of the bathtub. After the circulation jet of the cleaning liquid is repeatedly performed for a predetermined time, the cleaning liquid accumulated on the bottom side of the bathtub is discharged from the drain hole of the bathtub. Subsequently, a predetermined amount of washing water (water such as tap water) is supplied into the bathtub from the water supply pipe through the circulation pipe, and this washing water is similarly jetted from the cleaning nozzle into the bathtub through the circulation pipe, The cleaning liquid in the inner wall surface of the bathtub and the circulation pipe and the dirt component dropped by the cleaning liquid are washed, and the cleaning liquid containing the cleaning liquid and the dirt component is discharged from a drain hole of the bathtub, and after being cleaned for a predetermined time, the bathtub is washed. Washing is completed.

Next, water is filled in the bath tub from the water supply pipe through the circulation pipe, and the pump is started again to be sucked from the return pipe by the pump in the bath tub. The water is sprayed into the bathtub to circulate the water in the bathtub. Then, the circulating water is heated when passing through a heating source incorporated in the circulation pipe, thereby reheating the water stretched in the bathtub.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a system configuration of an embodiment of a bathtub cleaning apparatus according to the present invention.

In the figure, a drain pipe 2 is connected to the bottom of a bathtub 1, and the drain pipe 2 is provided with a drain valve 3 composed of an electromagnetic valve or the like. A pair of washing nozzles 4a and 4b are provided on the backrest side of the bathtub 1 and on a wall portion facing the backrest with the ejection ports facing the inside of the bathtub. The washing nozzles 4a and 4b are connected to branch supply pipes 5a and 5b functioning as outgoing pipes, and the branch supply pipes 5a and 5b are connected to heat sources via nozzle opening / closing valves 6a and 6b such as solenoid valves. It is connected to the outlet pipe 8. The return pipe 10 directly connected to the bottom side (bottom wall) of the bathtub 1 is connected to the suction side of a pump 12 via a return pipe opening / closing valve 11 such as an electromagnetic valve. A water flow sensor 13 and a temperature sensor 14 for detecting the temperature of the fluid flowing through the return pipe 10 are provided in a pipe between the return pipe opening / closing valve 11 and the pump 12.

A detergent supply pipe 15 is connected to a line on the suction side of the pump 12, and the detergent supply pipe 15 is connected to a detergent tank (detergent supply source) 17 via a detergent opening / closing valve 16 such as an electromagnetic valve. I have. A liquid detergent is stored in the detergent tank 17. The discharge side of the pump 12 is connected via a line 18 to the inlet side of a reheating heat exchanger 20 functioning as a heating source,
The outlet side of the reheating heat exchanger 20 is connected to the heat source outlet pipe 8. A return pipe 10 including these return pipe on-off valves 11,
The cleaning nozzles 4a, 4b are provided via a pump 12, a pipe 18, a reheating heat exchanger 20, a heat source outlet pipe 8, and nozzle on / off valves 6a, 6b.
And the branch supply pipes 5a and 5b which constitute a circulation pipe line for both circulation of the detergent and circulation of the additional hot water. The pipeline
One end of a water supply pipe 22 is connected to 18, and the other end of the water supply pipe 22 is connected to a water supply opening / closing valve 21 such as a solenoid valve and a flow sensor 19.
Is connected to a washing water supply source such as a tap.

Pipe opening / closing (valve opening / closing) control of the drain valve 3, the nozzle opening / closing valves 6a and 6b, the return pipe opening / closing valve 11, the detergent opening / closing valve 16, and the water supply opening / closing valve 21, and the operation control of the pump 12, The combustion control of the reheating heat exchanger 20 (burner combustion control) is performed by the control unit 23. A remote control 24 is connected to the control unit 23. The remote control 24 includes a fully automatic button 25 for continuously performing a cleaning operation and a reheating operation, a reheating water temperature setting unit 26, and a filling water amount setting unit. 27 are provided.

The control unit 23 includes a signal input unit 28 as shown in FIG.
, A determination / instruction unit 29, a timer 30, 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, a temperature detection signal from the temperature sensor 14, and a flow detection signal from the flow sensor 19, and determines these signals.・ Add to the command section 29. The determination / instruction unit 29 receives the signal from the signal input unit 28 and the information of the program given to the memory 32, grasps the progress of the bath tub cleaning operation and the bath reheating operation program, and determines In response, the timer 30 is instructed to operate the timer, the arithmetic unit 31 is instructed to calculate the amount of water at the time of filling, and the various valves 3, 6a, 6b, 11, 16 and 21 are output as appropriate to open and close control signals, The operation of 12 and the control of burner combustion of the reheating heat exchanger 20 are performed. As described above, the memory 32 incorporates a program for fully automatic operation from washing a bathtub to reheating a bath.
Is stored.

The present embodiment is configured as described above.
An example of the fully automatic operation from the washing of the bathtub to the reheating of the bath will be described based on the flowchart shown in the figure. First, the reheating water temperature is set in the reheating water temperature setting unit 26, the filling water amount is set in the filling water amount setting unit 27, and then the fully automatic button 25 of the remote control 24 is turned on.
Is applied to the judgment / instruction unit 29 via the signal input unit. The determination / instruction unit 29 receives the instruction of the fully automatic operation mode, opens the drain valve 3, and drains dirty hot water stretched in the bathtub 1 in step 101. Similarly, in step 102, the nozzle on-off valves 6a and 6b and the return pipe on-off valve 11 are opened by a control signal from the determination / instruction unit 29, and the circulation pipe is opened so that the detergent in the detergent tank 17 can easily enter the circulation pipe. The road is released to atmospheric pressure. Then, it is determined whether or not the drainage of the hot water is completed.
Judgment at 103.

That is, the judgment / instruction unit 29 determines in step 102 that each of the valves 6a, 6
After sending the opening signals of b and 11, the timer 30 is used to determine whether or not the T time required for the hot water in the bathtub 1 to completely flow out has elapsed. The drain valve 3 is kept open until the time T has not elapsed. When the time T has elapsed, it is determined that the water in the bathtub 1 has been completely drained, and the drain valve 3 is determined.
Close. 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 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, a predetermined amount (eg, 20 cc) of detergent is supplied from the detergent tank 17 to the detergent supply pipe 15.
Is determined to have been supplied to the pipeline 18 through the
Close 16.

Next, the nozzle on / off valves 6a and 6b are both closed, and the water supply on / off valve 2
Open one. Then, flush water such as tap water is supplied from the pipe 18 through the return pipe 10 to the bathtub along with the detergent through the water supply pipe to the bottom side. Step 110 The amount of water supplied to the tub determines whether or not becomes a predetermined X ₁ l. That is, the determination / instruction unit 29 receives the signal from the flow rate sensor 19 and causes the calculation unit 31 to cumulatively calculate the supplied water amount every moment. While the calculated water volume does not reach X ₁ l, the water supply on-off valve 21 is kept open, and when the calculated water volume reaches X ₁ l, the water supply on-off valve 21 is closed. By supplying the washing water of X ₁ l to the bathtub, a washing liquid (mixture of washing water and detergent) necessary for smoothly operating the pump 12 is stored at the bottom side of the bathtub. 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. On the other hand, by calculating and supplying an appropriate water supply amount as in the present embodiment, an amount of cleaning liquid that does not hinder the operation of the pump is secured, and the smooth operation of the pump is enabled.

After the wash water of the X ₁ l is supplied, the water supply on-off valve 21 is closed, the nozzle on-off valve 6a is opened. Then, in step 113, the pump 12 is started. When the pump 12 is started, the cleaning liquid accumulated at the bottom of the bathtub 1 is returned to the return pipe.
The suction liquid is sucked into the pump 12 through the pipe 10, and the suctioned cleaning liquid enters the reheating heat exchanger 20 through the pipe 18 from the discharge side of the pump 12, where the cleaning liquid exerts a chemical cleaning ability. Is heated to a temperature suitable for the heating, in the present embodiment, 50 to 60 ° C.
From the branch supply pipe 5a through the nozzle opening and closing valve 6a,
It is sprayed into the bath from the cleaning nozzle 4a.

The jetted cleaning liquid flows down to the bottom side of the bathtub 1, and the cleaning liquid flowing down to the bottom side returns to the return pipe 10.
Then, the water is sucked by the pump 12, and similarly passes through the reheating heat exchanger 20, and then is jetted from the washing nozzle 4a into the bath through the branch supply pipe 5a. 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 T ₂ ° C (for example, 60 ° C).
A determination is made in step 114 as to whether or not: When the temperature of the cleaning liquid is equal to or lower than T ₂ ° C, the gas burner of the reheater 20 is burned in step 115 to heat the cleaning liquid. Then, in step 116, it is again determined whether or not the temperature of the cleaning liquid is equal to or higher than T ₂ ° C. When the temperature is equal to or lower than T ₂ ° C, the burner of the reheating heat exchanger 20 is continuously heated and heated, and the temperature of the cleaning liquid reaches T 2 _{When the} temperature reaches ₂ ° C. or higher, burner combustion in the heat exchanger 20 is stopped.

Next, in step 118, after pump 12 is started, T ₃
It is determined whether or not time has elapsed. When not elapsed T ₃ hours repeats the operation from step 114 117 continues to control the temperature of the washing liquid circulating injection to a temperature of T _2. Pump 1 in step 119 when time has elapsed T ₃ hours
2 is stopped, and in step 120, the nozzle opening / closing valve 6a is closed. Then, in step 121, the nozzle opening / closing valve 6b is opened, and in step 122
To start pump 12. Then return pipe from bathtub 1
The washing liquid circulated through 10 is similarly reheated by the heat exchanger 20
, And is sprayed from the cleaning nozzle 4b into the bath via the branch supply pipe 5b, and the circulating spray of the cleaning liquid is repeatedly performed. At this time, in steps 123 to 126, the temperature of the cleaning liquid is controlled in the same manner as the operations in steps 114 to 117, and the cleaning liquid is sprayed into the bathtub 1 while maintaining the temperature at T ₂ ° C.

At step 127 from the time the pump starts in step 122 whether T ₄ hours have elapsed determination is made similarly to the step 118, the pump 12 at step 128 when the elapsed T ₄ hours
Is stopped, and at the same time, the nozzle opening / closing valve 6b is closed and the drain valve 3 is opened. Subsequently, at step 129, the water supply on-off valve 21 is opened. As a result, the washing water supplied from the water supply pipe 22 passes through the pipe 18, the return pipe opening / closing valve 11, and the return pipe 10 and enters the bathtub 1 from the bottom side, and the cleaning liquid and the dirt component collected at the bottom of the bathtub 1 From the drain pipe 2. At this time, in step 130, it is determined whether or not the amount of water supplied to the bathtub has reached a predetermined value X ₂ l, in the same manner as the operation in step 110. When the amount of water supply reaches X ₂ l, the water supply on-off valve 21 is closed in step 131, and then in step 132 the return pipe on-off valve 11
Is closed.

Next, in steps 133 and 134, the nozzle on-off valve 6a and the water supply on-off valve 21 are opened. Then, the washing water supplied from the water supply pipe 22 passes through the reheating heat exchanger 20, enters the branch supply pipe 5a from the heat source outlet pipe 8 through the nozzle opening / closing valve 6a, and is injected from the washing nozzle 4a toward the inner wall surface of the bathtub. Is done. By this spraying, the cleaning liquid adhering to the inner wall surface of the bathtub and the dirt component floating from the inner wall surface of the bathtub are washed away and discharged from the drain pipe 2.

The washing solution injection amount from the cleaning nozzle 4a predetermined X ₃ it became l water supply on-off valve 21 is closed when it is determined in step 135 continues nozzle on-off valve 6a is closed.
Then, in step 138, the nozzle on / off valve 6b is opened, and subsequently, in step 139, the water supply on / off valve 21 is opened. Then, the cleaning water supplied through the water supply pipe 20 is guided from the nozzle on / off valve 6b to the cleaning nozzle 5b through the branch supply pipe 5b, and is jetted from the cleaning nozzle 4b toward the inner wall surface of the bathtub. Then, the cleaning liquid and the dirt component adhering to the inner wall surface of the bathtub are similarly washed away and discharged from the drain valve 3. The injection water from the cleaning nozzles 4b are determined as in the case of the step 135 in step 140, the injection water is a predetermined X ₄
When it becomes 1, the water supply on-off valve 21 is closed, and then the nozzle on-off valve 6b is closed. Then, in step 143, the drain valve 3 is closed and the cleaning of the bathtub 1 is completed, and then the operation shifts to a water filling operation.

In this water filling operation, first, in step 144, the nozzle on-off valves 6a and 6b and the return pipe on-off valve 11 are opened. That is, all of the return pipe 10 and the forward pipe (branch supply pipes 5a and 5b) communicating with the bathtub 1 side of the circulation pipe are opened. Then, in step 145, the water supply on-off valve 21 is opened, and the water supplied from the water supply pipe 22 is supplied into the bathtub 1 from the return pipe and the washing nozzles 4a and 4b. In step 146, it is determined whether or not the supplied water amount has reached the water amount set by the water filling amount setting section 27 of the remote controller 24. When the supplied water amount reaches the set water amount, the water supply on-off valve 21 is closed in step 147 to complete the water filling. Then, the process proceeds to the next reheating operation.

In this reheating operation, first, in step 148, the nozzle opening / closing valve 6a on the side of the washing nozzle 4a on the backrest side is closed. Then, in step 149, the pump 12 is started, water in the bathtub 1 is circulated through the circulation pipe, and in step 150, burner combustion of the reheating heat exchanger 20 is started. And step 15
In step 1, the judgment / instruction unit 29 of the control unit 23 compares the detected temperature applied from the temperature sensor 14 with the reheating temperature set by the reheating water temperature setting unit 26 of the remote controller 24, and sets the detected temperature to the reheating setting. It is determined whether or not the temperature has been reached. While the detected temperature is lower than the reheating setting temperature, the reheating combustion is continuously performed, and when the detected temperature reaches the reheating setting temperature, the burner combustion of the reheating heat exchanger 20 is stopped in step 152, and subsequently, In step 153, the pump 12 is stopped.
Then, in step 154, the nozzle opening / closing valve 6b is closed, and the return pipe opening / closing valve 11 is closed, thereby completing the reheating operation.

According to the present embodiment, since the circulation line of the cleaning liquid and the circulation line of the additional boiling water are configured by the same conduit, the circulation line of the cleaning liquid is formed separately from the additional circulation line. In comparison with, the pipe configuration is extremely simplified, and it is possible to facilitate the production of the device and reduce the cost of the device.
The apparatus can be downsized, and the apparatus of this embodiment can be installed in the bathroom without significantly reducing the effective use space of the bathroom.

Further, the reheating heat exchanger 20 of the present embodiment can function as a heating source of the cleaning liquid during bathtub cleaning, and can function as a reheating hot water heating source during reheating of hot water.
12 can also be used as a pump for circulating injection of cleaning liquid and a pump for recirculating hot water, so that the equipment can be used effectively and it is very economical.

The present invention is not limited to the above embodiment,
Various embodiments may be employed. For example, in the above embodiment, the branch supply pipes 5a and 5b are provided with the nozzle opening / closing valves 6a and 6b,
The cleaning nozzles 4a and 4b may be configured as nozzles with a valve function, and the nozzle opening / closing valves 6a and 6b may be omitted. The form of the nozzle with a valve may be, for example, a cleaning nozzle as shown in FIG. That is, in FIG. 4, the ball valve 34 is rotatably accommodated in the metal fittings 33a, 33b of the bath tub mounting portions of the branch supply pipes 5a, 5b functioning as forward pipes via packings 35a, 35b such as O-rings. The nozzle outlet 36 of the ball valve 34 is opened, for example, in a flat shape. Then, a rotating shaft 37 is protruded from the ball valve 34, and this rotating shaft 37 is connected to the output shaft of the motor 38. The ball valve 34 is rotated by the motor 38, and the cleaning liquid is sprayed into the bathtub with the nozzle outlet 36 facing the inside of the bathtub. When the ball valve 34 is rotated 180 degrees from the state shown in FIG. If the nozzle opening / closing valve is configured on the nozzle itself so that the jet port 36 is closed with respect to the bathtub 1 by the packings 35a and 35b, the cleaning nozzles 4a and 4b themselves can have a valve function. The nozzle opening / closing valves 6a, 6b can be omitted, and the rotation control of the motor 38 allows the cleaning nozzles 4a, 4b to be opened / closed, so that the bath tub cleaning and bath reheating system can be more easily performed. It becomes possible to configure.

[Effect of the invention]

The present invention has a built-in circulation line for a pump that collects the cleaning liquid injected from the cleaning nozzle and circulates the cleaning liquid through the heating source to the cleaning nozzle, and a control unit that controls the circulation and injection of the cleaning liquid. The cleaning liquid can be guided to the cleaning nozzle by the pump drive and used repeatedly while maintaining the cleaning liquid at an optimum temperature (for example, 50 ° C to 60 ° C) at which the chemical cleaning ability is increased, and the inner wall surface of the bathtub can be effectively cleaned. As described above, since the cleaning liquid is repeatedly circulated and used, wasteful use of the cleaning liquid (detergent) such as discharging the cleaning liquid only once by spraying without repeatedly using the cleaning liquid can be eliminated. Further, as described above, since the cleaning liquid is repeatedly used, the amount of the detergent used can be reduced, so that a large amount of the detergent is used and discharged every time the bathtub is cleaned, thereby avoiding the problem of environmental pollution. An excellent effect of contributing to prevention can be obtained. further,
As described above, since the cleaning liquid is circulated in the circulation line by driving the pump, the circulation line can also be cleaned well each time the bathtub is cleaned. In the present invention, since the circulation line of the cleaning liquid also serves as the recirculation line of the bath, as described above, the recirculation line can be cleaned well every time the bathtub is cleaned. It is possible to avoid such a problem that dirt adheres to a pipe passing through the source and the heating source reheats the recirculating hot water during reheating, thereby deteriorating the thermal efficiency. Furthermore, as described above, since the circulation line for the cleaning liquid and the circulation line for reheating the bath are constituted by the same circulation line, compared to a system in which these two circulation lines are provided separately and independently, It is possible to simplify the road configuration,
It is possible to facilitate the manufacture of the device and to significantly reduce the cost of the device.

In addition, since the circulation pipe for cleaning and reheating is used as described above, the heat source for heating the cleaning liquid can be used also as the heat source for heating the boiling water, and the recirculation pump for cleaning liquid is reheated. Since it can be used as a circulation pump for hot and cold water, the equipment can be used effectively, and the size of the device can be reduced in combination with the simplification of the circulation pipe. The invented device can be installed in the bathroom.

Further, the detergent supply source is connected to the circulation pipe via the detergent supply pipe, and the washing liquid such as tap water supplied from the water supply pipe and the detergent are mixed in the circulation pipe and the cleaning liquid is supplied before reaching the bathtub. Since it is a configuration that is created, there is no need to separately provide a container (tank) for mixing the washing water and the detergent at the bottom of the bathtub. Not only become
As described above, the size of the apparatus can be reduced because the container for mixing the washing water and the detergent is not provided. Further, as described above, since the washing water and the detergent are mixed in the circulation pipe, the detergent is stirred by the water flow until the detergent is put into the circulation pipe and reaches the bathtub together with the cleaning water, and the uniform cleaning liquid is formed. As a result, the problem that the detergent precipitates and does not mix well with the washing water can be avoided, and the washing solution in which the detergent and the washing water are uniformly mixed can be shortened before the circulation driving of the washing solution is performed. An excellent effect that it can be created in a bathtub in a long time can be obtained.

Furthermore, by configuring so as to perform the reheating operation by closing the nozzle opening / closing valve on the side connected to the cleaning nozzle on the backrest side of the outgoing pipe connected to the cleaning nozzle,
Even if the bather starts reheating with the bather in the bathtub, the hot water to be heated by the heating source does not squirt toward the back side and hits the body, which is very convenient.

Further, when water is filled, the water supplied from the water supply pipe can be filled in the bath tub through the circulation pipe in a state where all the openings that open into the bath tub, that is, the nozzle on-off valve and the return pipe on-off valve are all open, so that the unit is The amount of water supply per hour becomes large, and water can be filled in a short time.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing an embodiment of a bathtub cleaning apparatus according to the present invention, FIG. 2 is a block diagram of a control section constituting the embodiment, and FIG. 3 is a fully automatic operation operation in the embodiment. FIG. 4 is a cross-sectional configuration diagram showing one embodiment of a nozzle with an on-off valve. 1 ... bathtub, 2 ... drain pipe, 3 ... drain valve, 4a, 4b ...
Washing nozzle, 5a, 5b… Branch supply pipe, 6a, 6b… Nozzle opening / closing valve, 8… Heat source outlet pipe, 10… Return pipe, 11… Return pipe opening / closing valve, 12… Pump, 13… Water flow sensor, 14 Temperature sensor, 15 Detergent supply pipe, 16 Detergent on-off valve, 17
Detergent tank, 18 Pipe line, 19 Flow sensor, 20 Reheating heat exchanger, 21 Water supply on-off valve, 22 Water supply pipe, 23
…… Control unit, 24 …… Remote control, 25 …… Fully automatic button, 26
…… Boiler water temperature setting section, 27 …… Flooding water quantity setting section, 28
…… Signal input section, 29 …… Judgment / command section, 30 …… Timer,
31 ... Calculator, 32 ... Memory, 33a, 33b ... Fittings, 34 ...
... ball valves, 35a, 35b ... packing, 36 ... jet ports, 37 ... rotating shaft, 38 ... motor.

Continued on the front page (72) Inventor Toshio Miyama 3-4 Fukamidai, Yamato City, Kanagawa Prefecture Inside Gaster Co., Ltd. (72) Inventor Toshiya Okano 3-4 Fukamidai Yamato City, Kanagawa Prefecture Gaster Co., Ltd. (56) References JP-A-2-86884 (JP, A) JP-A-53-145365 (JP, A) JP-A-49-116869 (JP, A) JP-A-62-4272 (JP, U) 58-74036 (JP, U) Hikaru 4-17755 (JP, U)

Claims (3)

(57) [Scope of request for utility model registration] 1. A cleaning nozzle installed on a bathtub wall for injecting a cleaning liquid toward an inner wall surface of a bathtub, and a cleaning liquid injected on the inner wall surface of the bathtub being sucked and collected from a return pipe and supplied to the cleaning nozzle via a forward pipe. A circulation line built in the pump and a control unit for controlling the circulating injection of the cleaning liquid; and a heating source incorporated in the circulation line and heating the circulating cleaning liquid to a predetermined temperature, and a detergent is supplied to the circulation line. A detergent supply source is connected via a leading detergent supply pipe, an inlet end of the return pipe is directly communicated with a bottom wall of the bathtub, and the cleaning nozzle also serves as a discharge part of a hot water reheating circulation. A bath tub cleaning device in which a cleaning liquid heating source also serves as a hot water reheating heater and the cleaning liquid circulation line also serves as a bath reheating circulation line. 2. A plurality of cleaning nozzles are provided on a wall portion on the backrest side of the bathtub and on other walls, and a nozzle opening / closing valve controlled by a control unit is provided on at least an outgoing pipe connected to the cleaning nozzle on the backrest side. The bathtub cleaning apparatus according to claim 1, wherein the control unit is configured to control to close a nozzle opening / closing valve that communicates with the cleaning nozzle on the backrest side during the reheating operation of the apparatus. The circulation line is connected to the water supply pipe via a water supply opening / closing valve, and a return pipe opening / closing valve is provided on the return pipe, and a nozzle opening / closing valve is provided on the outward pipe by the control unit. The control unit is configured to open the water supply on-off valve and fill the bathtub with water during a water filling operation, and to open and control all of the nozzle on-off valve and the return pipe on-off valve. The bathtub cleaning apparatus according to item 1 above.