JP2583899Y2 - Bathtub cleaning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a bathtub cleaning apparatus that sprays a cleaning liquid into a bathtub to automatically clean the bathtub.

[Prior art] As a device for automatically cleaning a bathtub, Japanese Utility Model Application Laid-Open No.
No. 9 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.
When cleaning the bathtub, the cleaning liquid is supplied from the detergent tank to the cleaning nozzle by a pump, and the cleaning liquid is jetted into the bathtub to remove dirt.After that, the cleaning water is supplied from a cleaning water supply source such as tap water to the water injection nozzle. The cleaning liquid is supplied and injected into the bathtub, and the dirt component of the bathtub and the cleaning liquid that have been dropped by the cleaning liquid are washed away and discharged from the drain hole.

However, since this conventional apparatus is a system in which the cleaning liquid is sprayed from one cleaning nozzle, there is a problem that the cleaning liquid does not reach every corner of the inner wall surface of the bathtub, causing uneven cleaning.

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. This development device has a plurality of fixed cleaning nozzles at different positions on the inner wall surface of the bathtub, etc., and a cleaning liquid supply pipe for supplying the cleaning liquid to each cleaning nozzle via an electromagnetic valve, in order to increase the injection pressure of the cleaning liquid. The opening and closing sequence of the solenoid valve is controlled so that the cleaning liquid is sequentially sprayed from one cleaning nozzle toward the inside of the bathtub at a constant time interval, so that the cleaning liquid spreads to every corner of the inner wall of the bathtub, and The cleaning liquid accumulated on the bottom side is circulated and repeatedly jetted from the cleaning nozzle, and thereafter, the cleaning water such as tap water is sequentially jetted from each of the cleaning nozzles at a fixed time interval to wash away the dirt components and the cleaning liquid on the bathtub wall surface and to bathtub. Is discharged from the outlet.

According to this developed apparatus, the cleaning liquid is sprayed from different cleaning nozzles at different locations, so that the cleaning liquid can be spread all over the bath tub. Because it is injected with
The inner wall surface of the bathtub can be cleaned evenly and cleanly.

[Problems to be solved by the invention]

However, since the development device is a system in which a fixed-type cleaning nozzle is disposed on an inner wall surface of a bathtub or the like, the jetting direction of the cleaning solution jetted from the cleaning nozzle is also fixed in a fixed direction. There is a problem that a large number of cleaning nozzles must be provided in order to spread all over the inner wall surface.In addition, in order to increase the jetting pressure of the cleaning liquid, a solenoid valve of a cleaning liquid supply pipe connected to each cleaning nozzle must be provided. Since it is necessary to selectively control the opening and closing of the nozzles one by one to perform injection (of course, a large-capacity pump can be used to simultaneously inject a plurality of cleaning nozzles at a high injection pressure, but if that is the case, the pump becomes very Upsizing,
There is a problem that it is not possible to secure an installation place in the bathroom. To avoid this, use a small pump,
The cleaning nozzles are sequentially switched and ejected one by one), the number of solenoid valves increases, and not only does the piping connection of the solenoid valves take time, but also a large number of solenoid valves are exposed to each cleaning liquid supply pipe. In this case, there is a problem that the aesthetic appearance is impaired.

The present invention has been made in order to solve the above-mentioned problem, and an object of the present invention is to enable a small number of cleaning nozzles to spray a cleaning liquid to every corner of an inner wall surface of a bathtub, and furthermore, to provide a cleaning liquid supply pipe. An object of the present invention is to provide a cleaning apparatus which can simplify piping connection work by omitting an electromagnetic valve, and which has a good external appearance.

[Means for solving the problem]

The present invention is configured as follows to achieve the above object. That is, the present invention has a cleaning nozzle that sprays a cleaning liquid pressurized by a pump, and a cleaning liquid supply pipe that supplies the cleaning liquid to the cleaning nozzle, and collects the cleaning liquid sprayed from the cleaning nozzle toward the inner wall of the bathtub. And a control unit for controlling the circulating injection of the cleaning liquid, and a water supply means for supplying cleaning water to the cleaning liquid circulation pipe. The control unit controls the detergent input operation by the detergent input unit and the water supply operation by the water supply unit, and the mixed liquid of the wash water and the detergent for starting the pump on the bottom of the bathtub is connected to the control unit. A control structure for producing a cleaning liquid is provided, wherein the cleaning nozzle is connected to a distal end side of the cleaning liquid supply pipe by a valve accommodating case, and is rotated in the valve accommodating case by a rotary drive source. The valve body has a nozzle passage which has a base end that is always in communication with the cleaning liquid supply pipe and a tip end that is an ejection hole. An opening that opens the ejection hole into the bathtub at the rotation position of the valve body where the ejection hole faces the inside of the bathtub, and a closure that closes the cleaning liquid ejection from the ejection hole at the rotation position of the valve body where the ejection hole deviates from this opening. And the control unit controls the reciprocation or one-way rotation of the rotary drive source of the valve body, controls the opening and closing of the ejection hole of the valve body, and controls the ejection direction of the cleaning liquid ejected from the ejection hole. It is characterized by having a control configuration for changing.

[Action]

In the present invention, when the cleaning liquid pressurized by the pump is pumped through the cleaning liquid supply pipe, the cleaning liquid enters the valve housing case and subsequently enters the nozzle passage of the valve body. For example, at this time, when the drive source is controlled to reciprocate the valve body and the ejection hole is swung in the area of the opening provided in the valve housing case, the cleaning liquid is ejected from the ejection hole over a predetermined range from the ejection direction. It is sprayed over a wide range of the inner wall surface of the bathtub by changing. Then, after spraying for a certain period of time, when the valve body is rotated and the ejection hole is rotatably accommodated in the closing portion of the valve housing case, the cleaning liquid ejected from the ejection hole is stopped by the closing portion, and the ejection into the bathtub is stopped. When multiple washing nozzles are provided,
By rotating the valve body one by one cleaning nozzle and oscillating the ejection hole in the opening, a wide range of cleaning liquid jets with different jetting directions are successively performed at predetermined time intervals from each cleaning nozzle. .

After the spray of the cleaning liquid is performed to every corner of the inner wall surface of the bath tub, the cleaning liquid supply pipe is supplied with cleaning water such as tap water,
Similarly, the washing water is jetted into the bathtub by changing the jetting direction by one washing nozzle at a time, whereby the washing water is jetted to every corner of the bathtub, and the dirt component on the inner wall surface of the bathtub dropped by the jetting of the washing liquid. The remaining washing liquid is washed away by the washing water and discharged from the drain hole of 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 cleaning nozzles 4a and 4b are provided on one side wall portion of the bathtub 1 and a wall portion facing the one side wall, with a jet port facing the inside of the bathtub. The cleaning nozzles 4a and 4b are connected to cleaning liquid supply pipes 5a and 5b functioning as forward pipes. The cleaning liquid supply pipes 5a and 5b join and are connected to a heat source outlet pipe 8. A return pipe 10 connected to the bottom of the bathtub 1 is connected to a 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 pipe on the suction side of the pump 12, and the detergent supply pipe 15 is connected to a detergent tank 17 via a detergent opening / closing valve 16 formed of an electromagnetic valve or the like. A liquid detergent is stored in the detergent tank 17. The detergent tank 17, the detergent supply pipe 15, and the detergent on-off valve 16 constitute a detergent charging means. The discharge side of the pump 12 is connected via a line 18 to the inlet side of a heat exchanger 20 functioning as a heating source of the cleaning liquid, and the outlet side of the heat exchanger 20 is connected to the heat source outlet pipe 8. . The heat exchanger 20 heats the cleaning liquid injected into the bathtub to an optimum temperature (50 ° C. to 60 ° C.) at which the chemical cleaning ability is exhibited. Return pipe including these return pipe on-off valves 11
10, a pump 12, a pipe 18, a heat exchanger 20, a heat source outlet pipe 8, and a cleaning liquid supply pipe 5 for guiding the cleaning liquid to the cleaning nozzles 4a and 4b.
a and 5b constitute a washing liquid circulation line (washing liquid circulation line). One end of a water supply pipe 22 is connected to the pipe 18, and the other end of the water supply pipe 22 is a water supply opening / closing valve such as an electromagnetic valve.
The washing water supply source such as tap water is connected via 21. The water supply pipe 22 and the water supply on-off valve 21 constitute a water supply means.

The drain valve 3, a built-in valve of washing nozzles 4 a and 4 b described later, a return pipe opening / closing valve 11, a detergent opening / closing valve 16, and a water supply opening / closing valve
The control unit 23 controls the pipeline opening / closing (valve opening / closing) control with the pump 21, the operation control of the pump 12, and the combustion control of the heat exchanger 20 (burner combustion control). This control unit 23 has a remote control 24
The remote control 24 is provided with a cleaning button 25 for performing a cleaning operation.

Although the overall system configuration of the present embodiment is configured as described above, a feature of the present embodiment is that the cleaning nozzles 4a and 4b are configured as a unique mechanism with a valve function. FIG. 2 shows a specific configuration of the cleaning nozzles 4a and 4b. The cleaning nozzles 4a and 4b are configured by rotatably incorporating a valve body 27 in a valve housing case 26. The valve housing case 26 is a cleaning liquid supply pipe that functions as an outgoing pipe.
It is composed of outgoing pipe fittings 5a and 5b. The valve accommodating case 26 has a holding cylinder 28 with a flange 28 a fitted into the opening of the wall of the bathtub 1 from the inside of the bathtub 1, and is screwed to the holding cylinder 28 from the outside of the bathtub 1 and fixed to the wall of the bathtub 1. Tsuba 29a
The main body tube portion 29 is provided with a cover portion 30 which is fitted and fixed to the back opening side of the main body tube portion 29 and hermetically closes the back surface opening of the main body tube portion 29.

Inside the valve housing case 26, a packing housing step 31a,
An O-ring 32 is accommodated in the packing accommodation step 31a, and an O-ring 33 is accommodated in the packing accommodation step 31b. In the valve housing case 26, a spherical valve body 27 is hermetically pressed against the O-rings 32, 33 and rotatably housed. On the upper end side of the valve body 27, a rotating shaft 34 is provided projecting outward through the bearing portion of the valve housing 26 in an airtight manner, and the projecting tip side of the rotating shaft 34 is used as a reversible rotatable rotation drive source. Connected to the output shaft of the motor 35,
The valve body 27 rotates in conjunction with the rotation of the motor 35. The rotation of the motor 35 is controlled by the control unit 32.

A nozzle passage 36 bent at right angles is formed inside the valve body 27, and the base end side of the nozzle passage 36 is always in communication with the cleaning liquid supply pipes 5a and 5b connected to the valve housing case 26. ing. The tip side of the nozzle passage 36 is an ejection hole 37, and the ejection hole 37 has a flat shape as shown in FIG. 3, and when the cleaning liquid is ejected from the ejection hole 37,
The jetting pattern of the cleaning liquid is made flat (fan-shaped) to minimize the dispersion of the jetted cleaning liquid, and the jetting pressure is increased to increase the cleaning power.

The inside of the valve housing case 26 is air-tightly partitioned by O-rings 32 and 33. On the back side of the valve housing case 26, the valve body 27 is moved beyond the O-ring 32 from the state shown in FIG.
When it is rotated to the back side of the O-ring 33, it is a closing portion 38 that shuts off the communication of the ejection hole 37 with the bathtub.
The front side is an opening 40 in which the ejection hole 37 faces the inside of the bathtub 1.

This embodiment is configured as described above, and the operation of cleaning the bathtub will be briefly described below. First, when the cleaning button 25 is turned on, the drain valve 3 is opened by the control signal of the control unit 23, and the hot water stored in the bathtub 1 is discharged from the drain pipe 2. After the discharge is completed, the drain valve 3 is closed, and the rotation of the motor 35 of each of the cleaning nozzles 4a and 4b causes the ejection hole 3 to be closed.
7 is directed to the opening 40 side, and the return pipe opening / closing valve 11
Is opened and the circulation line is opened to the atmosphere.

Next, the detergent on-off valve 16 is opened, and a predetermined amount (for example, 20 cc) of the detergent is supplied from the detergent tank 17 to the circulation pipe through the detergent supply pipe 15. After the supply of the detergent is completed, the detergent on / off valve 16 is closed, and at the same time, the motor 35 is rotated to close the ejection holes 37 of the washing nozzles 4a and 4b by the closing portion. Then, the water supply on-off valve 21 is opened to supply a predetermined amount of washing water such as tap water to the bathtub 1 via the return pipe 10, and then the water supply on-off valve 21 is closed. Due to the supply of the washing water, the detergent enters the bathtub together with the washing water, and a washing liquid (mixture of the detergent and the washing water) that can start the pump 12 smoothly is accumulated on the bottom side of the bathtub.

In this state, for example, the motor of the cleaning nozzle 4a is rotated,
When the pump 12 is started in a state where the ejection hole 37 is on the opening 40 side, the cleaning liquid in the bathtub is sucked into the pump 12 via the return pipe 10 and is heated to a predetermined temperature by the heat exchanger 20 so that the cleaning nozzle 4a
To be sprayed into the bathtub from the cleaning nozzle 4a.
At this time, by rotating the motor 35 of the cleaning nozzle 4a back and forth and causing the ejection hole 37 of the valve body 27 to swing horizontally in the area of the opening 40, the cleaning liquid ejected flat from the ejection hole 37. Changes the spouting direction and sprays it toward the inside of the bathtub over a wide area to remove dirt from the inside of the bathtub.
When the injection of the cleaning nozzle 4a has passed for a predetermined time, the injection of the cleaning liquid is stopped by directing the ejection hole 37 of the cleaning nozzle 4a toward the closing portion 38 side. Next, the motor 35 of the washing nozzle 4b is rotated to set the ejection hole to the opening 40 side, the pump 12 is started, the cleaning liquid is sent to the washing nozzle 4b, and the ejection hole 37 is swung in the area of the opening 40. By circulating and jetting the cleaning liquid, the cleaning liquid is jetted over a wide area of the inner wall surface of the bathtub 1 to remove dirt on the inner wall surface of the bathtub.

After the injection of the cleaning liquid from the cleaning nozzle 4b is completed,
The drain valve 3 is opened, the water supply on-off valve 21 is subsequently opened, and the washing water is supplied from the return pipe 10 to the bottom of the bathtub, and the washing liquid accumulated at the bottom of the bathtub is discharged from the drain pipe 2. After the discharge is completed, the return pipe opening / closing valve 11 is closed, the motor 35 on one cleaning nozzle, for example, the cleaning nozzle 4a is rotated to open the ejection hole 37, and the water supply opening / closing valve 21 is opened to wash the cleaning water with the cleaning nozzle 4a. The cleaning liquid and the dirt component adhering to the inner wall surface of the bathtub are washed out and discharged from the drain pipe 2, and at the same time, the cleaning liquid and the dirt component adhering to the conduit through which the cleaning water passes are also removed. Is washed out by the washing water passing through and discharged. When a predetermined time has elapsed from the cleaning nozzle 4a injection of the cleaning water, this time by oscillating the cleaning water from the cleaning nozzle 4b side, the cleaning liquid similarly attached to the inner wall surface of the bathtub and the pipeline and The dirt components are washed away by the washing water and discharged from the drain pipe 2. When a predetermined time has elapsed after the injection from the cleaning nozzle 4b, the water supply opening / closing valve 21 is closed, and subsequently, the ejection hole 37 of the cleaning nozzle 4b is closed by the closing portion 38, and the automatic cleaning of the bathtub is completed.

In the present embodiment, the valve body 27 of the cleaning nozzles 4a and 4b is
Because it is configured to swing around by
The sprayed washing liquid and washing water are sprayed over a wide area on the inner wall surface of the bathtub with the spray direction changed over time, so even if the number of washing nozzles is reduced, the washing liquid and washing water are sprayed all over the inner wall surface of the bathtub. It is possible,
It is possible to clean the bathtub with a small number of cleaning nozzles. Further, since the number of cleaning nozzles can be reduced, the configuration of the apparatus can be simplified accordingly.

Further, since the ejection holes 37 of the cleaning nozzles 4a and 4b of the present embodiment are formed flat, the cleaning liquid and the cleaning water to be jetted become flat (fan-shaped) and intensively collide with the inner wall surface of the bathtub. As a result, the impact force against the inner wall surface of the bathtub is increased, and the cleaning ability can be further improved.

Further, since the cleaning nozzles 4a and 4b of the present embodiment have valve functions in the nozzles themselves, there is no need to separately provide an on-off valve such as a solenoid valve for the cleaning liquid supply pipes 5a and 5b. This is very easy, and since many solenoid valves are not exposed, the appearance is also favorable.

The present invention is not limited to the above embodiment,
Various embodiments may be employed. For example, in the above embodiment, the cleaning nozzles 4a and 4b are provided on the inner wall surface of the bathtub, but they may be provided on the lid 7 of the bathtub 1.

Further, in the above embodiment, the valve body 27 of the cleaning nozzles 4a and 4b is formed in a spherical shape, but the shape of the valve body 27 can be formed in various shapes such as a columnar shape and a conical shape.

Further, in the embodiment, the ejection hole 37 of the nozzle is formed in a flat shape, but this ejection hole 37 may be formed in a circular shape.
In this regard, when the injection hole is formed in a circular shape, the injection pattern of the cleaning liquid injected from the injection hole becomes conical, the cleaning liquid to be injected is diffused and becomes more mist-like, the injection pressure is reduced, and the cleaning performance is reduced. It is weaker than in this embodiment.

Further, in the above-described embodiment, the valve element 27 is swung and rotated (reciprocal rotation in the forward and reverse directions). However, it can be rotated in only one direction. At this time, the motors of the cleaning nozzles 4a and 4b are synchronized, and when the ejection hole 37 of one valve body is in the rotation region of the closing portion 38, the ejection hole 37 of the other valve body is rotated by the rotation of the opening 40. The cleaning liquid may be sprayed alternately on the area.

[Effect of the invention]

In the present invention, the valve body of the cleaning nozzle is configured to be rotatable using a drive source, and when the ejection hole of the valve body faces the opening of the valve housing case, the cleaning liquid is sprayed toward the inside of the bathtub, and the valve body is formed. Since the cleaning nozzle is configured to stop the injection of the cleaning liquid when rotating and directing the ejection hole to the closing portion side, the opening and closing operation of the valve can be performed by the cleaning nozzle itself. Since there is no need to provide an on-off valve such as a solenoid valve for the cleaning liquid supply pipe for supplying the cleaning liquid, the apparatus configuration can be simplified and the work efficiency of piping construction can be greatly improved. Since the on-off valve such as the electromagnetic valve is not exposed to the cleaning liquid supply pipe, the appearance is also very favorable.

Further, since the valve body of the cleaning nozzle can reciprocate or rotate in one direction by the rotation control of the rotary drive source by the control unit, the rotation direction of the control unit changes the injection direction of the cleaning liquid injected from the ejection hole of the valve body. Therefore, the spray range of the cleaning liquid sprayed from one cleaning nozzle becomes very wide. In addition, the nozzle passage of the cleaning nozzle is configured such that the base end thereof is always in communication with the cleaning liquid supply pipe. That is, when the valve body of the cleaning nozzle is rotating to the position where the cleaning liquid is ejected, the valve body closes the cleaning liquid. Even when the nozzle is rotated to the position, the base end side (inlet side) of the nozzle passage is always in communication with the cleaning liquid supply pipe regardless of the rotation position of the valve body. The jet flow rate does not decrease and changes, the jet flow rate of the cleaning liquid is kept almost constant regardless of the swinging jetting position, and a strong jet impingement force can be applied to the inner wall surface of the bathtub in any jet direction, and the washing nozzle It is possible to clean the bathtub evenly and cleanly by spraying the cleaning liquid vigorously over every corner of the inner wall surface of the bathtub without providing many bathtubs. Furthermore, a cleaning liquid circulation pipe line with a built-in pump and a control unit for controlling the circulation and injection of the cleaning liquid are provided, which collects the cleaning liquid injected from the cleaning nozzle toward the inner wall surface of the bathtub and circulates the cleaning liquid to the cleaning nozzle. It is possible to circulate the cleaning liquid circulation pipe by pump driving and to use the cleaning liquid repeatedly, and it is possible to eliminate waste in using the cleaning liquid (detergent) such that the cleaning liquid is discharged without being repeatedly used, which is very economical. It is. Further, as described above, since the cleaning liquid is used repeatedly, the detergent usage fee can be reduced, and it is avoided that a large amount of the detergent is used and discharged every time the bath tub is washed, thereby causing a problem of environmental pollution. An excellent effect of contributing to prevention can be obtained. Further, as described above, the cleaning liquid circulates in the cleaning liquid circulation pipe by driving the pump, so that the cleaning liquid circulation pipe can be satisfactorily cleaned each time the bathtub is cleaned. further,
In the present invention, when performing bathtub cleaning, the control unit controls the detergent input operation by the detergent input unit and the water supply operation by the water supply unit, and collects only the cleaning liquid that can be pump-started on the bottom of the bathtub and circulates the cleaning liquid. I'm trying to do it,
The amount of the cleaning liquid accumulated on the bottom of the bathtub during bathtub cleaning is small, and therefore, the cleaning liquid sprayed from the cleaning nozzle can exert a strong jet impinging force not only on the side surface inside the bathtub but also on the bottom surface. The effect of being able to cleanly remove dirt over all the inner wall surfaces is obtained.

[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 sectional view showing a configuration of a cleaning nozzle used in the embodiment apparatus, and FIG. FIG. 3 (a) is a plan view of a valve body, and FIG. 3 (b) is a front view of the valve body. DESCRIPTION OF SYMBOLS 1 ... Bathtub, 2 ... Drain pipe, 3 ... Drain valve, 4a, 4b ... Cleaning nozzle, 5a, 5b ... Cleaning liquid supply pipe, 7 ... Lid, 8 ... Heat source outlet pipe, 1
0 ... return pipe, 11 ... return pipe opening / closing valve, 12 ... pump, 13 ... water flow sensor, 14 ... temperature sensor, 15 ... detergent supply pipe, 16 ... detergent opening / closing valve, 17 ... detergent tank, 18 ... pipe line, 20 ... Heat exchanger, 21…
Water supply on-off valve, 22 ... water supply pipe, 23 ... control unit, 24 ... remote control,
25 cleaning button, 26 valve housing case, 27 valve body, 28 holding cylinder, 28a flange, 29 cylinder body, 30 lid, 31a, 31b
Packing storage step, 32, 33… O-ring, 34… Rotating shaft, 35
... Motor, 36 ... Nozzle passage, 37 ... Outlet, 38 ... Closed part,
40 ... Opening.

 ──────────────────────────────────────────────────続 き 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 (56) References JP-A-2-86884 (JP, A) JP-A-49-116869 (JP, A) JP-A-53-145365 (JP, A) Jpn. U) Japanese Utility Model Showa 63-53646 (JP, U) Japanese Utility Model Showa 62-106694 (JP, U) Japanese Utility Model Showa 52-75535 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] A cleaning nozzle for jetting a cleaning liquid pressurized by a pump; a cleaning liquid supply pipe for supplying the cleaning liquid to the cleaning nozzle; and a cleaning liquid jetted from the cleaning nozzle toward an inner wall of a bathtub. A cleaning liquid circulating pipeline incorporating a pump for circulating the cleaning liquid through the cleaning liquid supply pipe and a control unit for controlling the circulating injection of the cleaning liquid, and a water supply unit for supplying cleaning water to the cleaning liquid circulating pipe; Detergent charging means is connected, and the control unit controls the detergent charging operation by the detergent charging means and the water supply operation by the water supply means, and starts the pump on the bottom of the bathtub. The cleaning nozzle is provided with a valve housing case that is connected to the distal end side of the cleaning liquid supply pipe, and a rotatable driving source is provided in the valve housing case so as to be rotatable. A nozzle passage, the base end of which is always in communication with the cleaning liquid supply pipe and the tip end of which is an ejection hole, and the valve housing case has an ejection hole of the nozzle passage. An opening for opening the ejection hole into the bathtub at a rotation position of the valve body facing the inside of the bathtub, and a closing portion for closing the washing liquid injection from the ejection hole at the rotation position of the valve body where the ejection hole deviates from the opening. The control unit controls the reciprocation or unidirectional rotation of the rotary drive source of the valve body to control the opening and closing of the ejection hole of the valve body to change the ejection direction of the cleaning liquid ejected from the ejection hole. A bath tub cleaning device having a control configuration.