JP2536412Y2 - Bathtub cleaning equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath tub cleaning apparatus of the type which circulates and jets a cleaning liquid.

[0002]

2. Description of the Related Art Japanese Utility Model Laid-Open No. 63-71869 is known as an apparatus for automatically cleaning a bathtub. 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 water such as tap water. A cleaning liquid is supplied to a cleaning nozzle with a pump, and the cleaning liquid is injected into a bath to remove dirt. Thereafter, water such as tap water is supplied to a water injection nozzle to be injected into the bath, and the bath is dropped by the cleaning liquid. The dirt component and the washing liquid are washed off and discharged from a drain port.

[0003]

However, the conventional apparatus does not repeatedly use the cleaning liquid jetted from the cleaning nozzle, but flows out of the drain port together with the next jetted water. There was waste.

[0004] In order to eliminate such waste of use of the detergent, it is conceivable to collect a cleaning solution in which a detergent and water are mixed in a bathtub, circulate and supply the cleaning solution to a cleaning nozzle, and use the cleaning solution repeatedly.

However, if the cleaning is performed in a state where the cleaning liquid is stored in the bathtub, the cleaning liquid sprayed from the cleaning nozzle is blocked by the stored cleaning liquid, making it difficult to vigorously collide with the bottom of the bathtub. A problem arises that cleaning cannot be performed effectively.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to clean a bathtub by circulating and jetting a cleaning liquid, thereby causing the cleaning liquid to jet and impinge on every corner of the inner wall surface of the bathtub. It is an object of the present invention to provide a bath tub cleaning device that can clean the tub cleanly.

[0007]

The present invention is configured as follows to achieve the above object. That is, the present invention provides a cleaning nozzle that sprays a cleaning liquid on the inner surface of a bathtub,
A tub cleaning device having a circulating circuit incorporating a circulating pump that circulates the cleaning liquid injected from the cleaning nozzle to the cleaning nozzle via a heater, and a tank communicating with the tub is provided below the bottom of the tub. is, this is the tank is connected to the return side of the circulation circuit, also said tank has a pressure introduction pipe is provided for detecting the draining means and tub water level for draining bath water, the pressure introduction the tip of the tube is facing from the tank side opening of the tub bottom, the tip opening of the pressure introduction pipe is configured as being covered with a cover to avoid jet impingement of the cleaning liquid, or
Further , the valve opening and closing mechanism of the drainage means is provided in the tank, a slope is provided on the top surface of the tank to rise from the peripheral portion toward the communication port to the bathtub, and the bottom surface of the tank is provided with a gradient. The fact that a slope descending from the section toward the drain is provided is also a characteristic configuration of the present invention.

[0008]

In the present invention having the above construction, when the cleaning liquid is accumulated in the tank and the circulation pump is driven in this state, the cleaning liquid in the tank is guided to the cleaning nozzle through the circulation circuit, and the room temperature or the cleaning liquid is supplied from the cleaning nozzle. The cleaning liquid heated by the heater is sprayed onto the inner wall surface of the bathtub, and the dirt on the inner wall surface of the bathtub is removed by the spray collision force and the chemical cleaning power of the detergent.

After the circulation of the cleaning liquid, water such as tap water is introduced into the circulation circuit, and the water or the water heated by the heater is turned into hot water from the cleaning nozzle to the bathtub inner wall surface. The cleaning liquid adhering to the inner wall surface is washed away and enters the tank, and is discharged outside by the drainage means, thereby completing the bathtub cleaning.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a system configuration of a first embodiment of a bathtub cleaning apparatus according to the present invention. In the figure, an opening 3 is provided on a bottom surface 2 of a bathtub 1, and a tank 5 is connected to a portion of the opening 3 via a connection fitting 4.

An opening 6 is formed on the upper surface of the tank 5 so as to face the opening 3 of the bathtub 1, and this opening 6, the hole 7 of the fitting 4 and the opening 3 on the bottom of the bathtub are continuous. Communication between the tank 5 and the bathtub 1 is established by the communication port. The upper surface of the tank 5 has an opening 6
The inclined surface 8 has a slope rising toward. In addition, the bottom surface of the tank 5 is also provided with an inclined surface 9 having a slope descending from the peripheral portion toward the drain port 10.

A drain port 10 is formed on the bottom surface of the tank 5, and an upper portion of the drain port 10 serves as a valve seat 11.
Inside the tank 5, a valve opening / closing mechanism of a drain valve 12 as a drain means for opening and closing the drain port 10 is provided. This drain valve
Numeral 12 includes a valve body 13 for opening and closing the drain port 10 and an arm 14 for moving the valve body 13 up and down.
Is connected to the distal end side of a drive wire 15, and the proximal end side of the drive wire 15 is guided out of the tank 5, and is connected to a drain valve motor 16.
It is connected to. The drive wire 15 is slidably inserted into the resin pipe 17, and the drive wire 15 moves forward and backward by being guided by the resin pipe 17, and the drain valve 12 is opened and closed.

That is, the drive wire 15 is drawn and retreats by the rotation of the drain valve motor 16. Along with this, the arm 14 rotates clockwise around the pin 21 and pulls the valve body 13 upward against the pressing force of the spring 22,
The drain port 10, which functions as a valve hole, is kept open. On the other hand, when the drain valve motor 16 is turned off, the drive wire 15
Moves back in the advance direction. Accordingly, the arm 14 rotates counterclockwise, lowers the valve 13 and closes the drain port 10. As described above, the opening / closing operation of the drain valve 12 is performed by turning on / off the drain valve motor 16.

A pressure introducing pipe is provided on one side wall 23 of the tank 5.
The opening of the pressure introducing tube 25 faces the opening 3 of the bathtub bottom surface 2. This opening 3 has a cover
The cover 19 covers the distal end opening (pressure detection opening) of the pressure introducing tube 25. The proximal end side of the pressure introducing pipe 25 is connected to the outward pipe 26,
The outgoing pipe 26 is connected to a pressure sensor 29 for detecting the pressure introduced from the distal end opening of the pressure introducing pipe 25. The inlet side of the outward pipe 26 is connected to the outlet side of the heater 28 via a pressure switching valve 27 such as an electromagnetic valve.

A return branch pipe is provided below the side wall 24 of the tank 5.
30 is connected. On the other hand, the return port of the return branch pipe 31 is connected to the side wall of the bathtub 1.
31 joins via return pipe opening / closing valves 32 and 33 such as solenoid valves, respectively, and the combined return pipe 34 becomes a circulation pump.
Connected to 35 suction sides. A pipe line 39 on the discharge side of the circulation pump 35 is connected to an inlet side of the heater 28 via a water flow sensor 36. An inlet-side temperature sensor 37 is provided on the inlet side of the heater 28, and an outlet-side temperature sensor 38 is provided on the outlet side of the heater 28.

A water supply pipe 40 is connected to the return pipe 34. The inlet side of the water supply pipe 40 is connected to a water supply source such as tap water through a water supply valve 41 such as an electromagnetic valve. Also, water pipe
40 is provided with a flow rate sensor 42 for detecting the amount of supplied water.

A cleaning liquid supply pipe 43 is branched and connected to the forward pipe 26. The cleaning liquid supply pipes 43 are branched from the cleaning liquid supply pipe 43 by providing nozzle opening / closing valves 44 and 45 such as solenoid valves. The outlet side of the cleaning liquid branch supply pipe 46 is connected to a cleaning nozzle 48 provided on the side wall surface of the bathtub 1.
The outlet of the cleaning liquid branch supply pipe 47 is connected to a cleaning nozzle 49 (not shown) provided on the side wall surface opposite to the wall surface on the cleaning nozzle 48 side.

A detergent supply pipe 51 is connected to the cleaning liquid supply pipe 43, and an inlet side of the detergent supply pipe 51 is connected to a detergent tank 53 via a detergent input valve 52 such as an electromagnetic valve.
The detergent tank 53 contains a liquid detergent.
In the system shown in FIG.
The path leading to the cleaning nozzles 48, 49 via the circulation pump 35, the heater 28, the cleaning liquid supply pipe 43, and the cleaning liquid branch supply pipes 46, 47 constitutes a cleaning liquid circulation circuit. Similarly, the path leading to the cleaning nozzles 48 and 49 forms a recirculating circuit for hot water in the bathtub. In the drawing, reference numeral 50 denotes a bathtub cover.

The operation control of the drain valve motor 16, the nozzle on / off valves 44 and 45, the return pipe on / off valves 32 and 33, and the pressure on / off valve 27
, The detergent injection valve 52 and the water supply valve 41 are opened and closed (valve opening and closing)
Control, operation control of the circulation pump 35, and combustion control of the heater 28 (burner combustion control) are performed by the control unit 54. A remote controller is connected to the controller 54, and the remote controller is provided with a cleaning button for performing a cleaning operation.

As shown in FIG. 2, the control unit 54 includes a signal input unit 55, a command / control unit 56, a timer 57, and a calculation unit 58.
And a memory 60. The signal input unit 55 receives a signal from the remote controller, a water flow detection signal from the water flow sensor 36,
The temperature detection signals from the temperature sensors 37 and 38 and the flow rate sensor 42
And a pressure detection signal from the pressure sensor 29, and applies these signals to the command / control unit 56.
The command / control unit 56 receives the signal from the signal input unit 55 and the information of the program provided to the memory 60, grasps the progress of the bath tub cleaning operation program, and, if necessary, The operation is instructed, and the arithmetic unit 58 is instructed to calculate the amount of water, and various valves 27, 32, 33, 41, 44, 45,
An open / close control signal is output to 52, and the operation of the circulation pump 35 and the control of burner combustion of the heater 28 are performed. memory
As described above, the program 60 incorporates the bathtub cleaning operation program, and stores the calculation result of the calculation unit 58 as necessary.

This embodiment is configured as described above.
Hereinafter, an example of the bathtub cleaning operation will be described based on the flowcharts shown in FIGS. 3 and 4. First, when the cleaning button of the remote controller is turned on, this ON signal is applied to the command / control unit 56 via the signal input unit 55 of the control unit 54. Command / control unit
56 receives the command of the cleaning operation mode, and
To detect whether or not the bathtub 1 is empty based on the signal of the pressure sensor 29. When the water level pressure is not detected, the inside of the bathtub 1 is determined to be empty, and the drain valve motor 16 is driven to drive the drain valve.
Open 12 When the inside of the bathtub 1 is not empty, the drain valve motor 16 is driven to open the drain valve 12, and the hot water in the bathtub 1 is discharged from the drain port 10. Then, in step 104, it is determined whether or not the inside of the bathtub 1 is emptied again. When the tub becomes empty, the nozzle opening / closing valve 44 is opened, and then the water supply valve 41 is opened.

Then, water such as tap water enters through the water supply pipe 40, and is guided to the cleaning nozzle 48 through the pump 35, the heater 28, the cleaning liquid supply pipe 43, and the cleaning liquid branch supply pipe 46 in this order.
Water or hot water is sprayed from the washing nozzle 48 onto the inner wall surface of the bathtub, and dust such as hair attached to the inner wall surface of the bathtub is washed away, enters the tank 5, and is discharged out of the drain port 10.

[0023] When the water injection from the cleaning nozzle 48 after _one hour T, opened nozzle-off valve 45, by closing the 44, similarly line injection of water from the opposite side of the washing nozzle 49 is in turn We, close the water supply valve 41 at step 111 when the injection has elapsed T ₂ hours. By such water washing, large dust such as hair attached to the inner wall surface of the bathtub is removed.

Next, by closing the nozzle opening / closing valve 45 and turning off the drain valve motor 16, the closing operation of the drain valve 12 is performed, and the drain port 10 is closed. Next, in step 113, the pressure on-off valve 27 is opened, and the return pipe on-off valve 32 is opened.
Is supplied to the outgoing pipe 26 and the return pipe 34, and the water entering the outgoing pipe 26 is discharged to the bottom side of the bathtub 1 while washing the pipe through the pressure introducing pipe 25. It starts to accumulate in the tank 5. Similarly, water entering the return pipe 34 is also returned to the return branch pipe 30.
From the tank 5. Amount of water supplied thereto tank 5 is asked every moment by the operation of the detected flow of the flow rate sensor 36, closes the pressure switch valve 27 when the water supply amount becomes Q _1, while detecting the water level in the pressure sensor 29 Return branch pipe 30
To supply water into the tank 5. And step 117
In it it is judged whether the water level in the bathtub 1 becomes H _1,
Water level continues to supply water to the tank 5 from the return branch pipe 30 when not lead to H _1, waiting for the water level in the bathtub 1 that becomes H _1.

[0025] The circulation pump 35 when the water level becomes H ₁
It is determined that priming water exceeding the amount of water required when rotating the water is obtained, and the water supply valve 41 is closed to stop the water injection into the tank 5.

Next, at step 119, the nozzle opening / closing valve 44 is opened, and at step 120, the circulation pump 35 is started. Then, the water in the tank 5 is sucked into the circulation pump 35 through the return branch pipe 30 and the return pipe 34, and is discharged from the circulation pump 35. The discharge water of the circulation pump 35 is injected into the bathtub from the cleaning nozzle 48 via the heater 28, the cleaning liquid supply pipe 43, and the cleaning liquid branch supply pipe 46, and the water is circulated using the cleaning liquid circulation circuit. In step 121, based on the water flow detection signal of the water flow sensor 36, it is confirmed that the water circulation is normally performed. In step 122, the drain valve motor 16 is operated to open the drain valve 12.

Then, while the water in the tank 5 is circulated in the circulation circuit, the water is discharged from the drain port 10 and the bathtub 1 is discharged.
The water level in the water gradually falls. Level of the water in the bathtub 1 is detected by the pressure sensor 29, in step 123 the water level in the bathtub 1, it is determined whether it is the level of H ₂ bottom of the bathtub 1, the water level into H ₂ When it becomes, that is, when the bottom surface of the bathtub 1 is completely exposed, it is determined that the optimum amount of water for washing the bathtub has been stored in the tank 5, and the drain valve motor 16 is turned off in step 124. , Drain port 10 is closed.

Next, at step 125, the detergent supply valve 52 is opened, a predetermined amount (for example, 20 cc) of detergent is supplied to the cleaning liquid supply pipe 43, and the detergent supply valve 52 is closed. The detergent supplied to the detergent supply pipe 43 is guided to the cleaning nozzle 48 together with the circulating water,
As a result of being sprayed into the bathtub, a cleaning liquid in which water and a detergent are mixed accumulates in the tank 5, and circulation cleaning of the cleaning liquid starts.

Next, in step 126, the burner combustion of the heater 28 is started, and an optimum temperature suitable for exhibiting the cleaning ability of the circulating cleaning liquid, in this embodiment, a constant temperature in the range of 50 ° C. to 60 ° C., for example, Controlled at 60 ° C. Then, the cleaning liquid controlled at a constant temperature is circulated and jetted from the cleaning nozzle 48, so that dirt on the inner wall surface of the bathtub is cleanly removed by the jet collision force of the cleaning liquid and the chemical cleaning power of the detergent. When injected from the cleaning nozzle 48 has passed T ₃ hours, opening the nozzle on-off valve 45, closing the 44, this time on the opposite side cleaning nozzle 49
After that, the circulating injection of the cleaning liquid is similarly performed. The cleaning liquid circulation injection from the washing nozzle 49 stops burner combustion heater 28 when a lapse of T ₄ hours, stops the circulating pump 35. Next, by turning on the drain valve motor 16, the drain port 10 is opened, and the dirty cleaning liquid accumulated in the tank 5 is discharged.

Next, when the water supply valve 41 is opened, the clean water from the water supply or the like slightly flows from the water supply pipe 40 to the washing nozzle 49 through the circulation pump 35, but most of the water returns with a small load resistance. The water flows from the pipe 34 through the return branch pipe 30 to the inside of the tank 5, and the pipe is washed by flowing water. Water performs an operation of step 135 in passing water closes the return pipe on-off valve 32 when it is Q _2.

Then, the water supplied from the water supply pipe 40 passes through the circulation pump 35, the heater 28, the cleaning liquid supply pipe 43, and the cleaning liquid branch supply pipe 47, and is jetted from the cleaning nozzle 49 to the inner wall surface of the bathtub. The cleaning liquid adhering to the wall surface and the water pipe and the dirt component dropped by the cleaning liquid are washed out and discharged out of the drain port 10. When the amount of water to be injected from the washing nozzle 49 becomes Q _3, turn the nozzle off valve 44 is opened 45 is closed, clean water supplied from the water supply pipe 40 is injected from the washing nozzle 48,
Similarly, the cleaning liquid adhering to the inner wall surface of the bathtub and the dirt component dropped by the cleaning liquid are washed away and discharged out of the drain port 10. The water injection amount from this cleaning nozzle 48 is Q
When the number reaches ₄ , the water supply valve 41 and the nozzle opening / closing valve 44 are closed. When the water in the tank 5 is a lapse T ₅ hours required to be discharged from the fully drain outlet 10, Step 14
In 3, the drain valve motor 16 is turned off, the drain port 10 is closed, and the bathtub washing operation is completed, and the state is filled with hot water.

According to the present embodiment, the amount of the cleaning liquid is set in the steps 120 to 124 so that the water level of the cleaning liquid does not rise above the bottom of the bathtub 1 during the circulating injection of the cleaning liquid. When the cleaning liquid is sprayed from the nozzles 48 and 49, the cleaning liquid also collides vigorously with the bottom surface 2 of the bathtub 1 so that it is possible to cleanly clean the corners of the inner wall surface of the bathtub.

When the cleaning liquid injected from the cleaning nozzles 48 and 49 enters the tank 5, air is taken in and the air enters the tank 5, but a gradient is formed on the upper surface of the tank 5 so as to rise toward the opening 6. As a result, the air escapes from the opening 6 into the bathtub 1 along the inclined surface 8, and the air is not sucked by the circulation pump 29 together with the cleaning liquid, so that the operation of the circulation pump 29 is performed smoothly. It becomes possible. Further, since the bottom surface of the tank 5 is provided with the inclined surface 9 which decreases as it goes to the drain port 10, when the cleaning liquid in the tank 5 is discharged from the drain port 10,
Dust and the like collected on the bottom surface of the tank 5 are discharged to the outside from the drain port 10 along the inclined surface 9, which is very convenient without accumulating dust in the tank 5.

Further, in this embodiment, since the opening at the end of the pressure introducing pipe 25 is covered with a cover, the cleaning nozzle
The jet impinging force injected from 48 and 49 does not directly act on the tip opening (pressure detecting opening) of the pressure introducing pipe 25, so that the water level in the bathtub 1 is controlled while circulating and jetting water in steps 120 to 124. When adjusting the water level from H ₁ to H ₂ , the water level can be accurately detected by the pressure sensor 29 without receiving the dynamic pressure of the jet collision force, and the optimum water amount suitable for cleaning is accurately set. Can be. Moreover, since the opening at the tip of the pressure introducing pipe 25 faces the opening at the bottom of the bathtub 1,
The water level in the bathtub can be detected by the pressure sensor 29 with reference to the bottom surface of the bathtub, which is advantageous in handling and controlling the bathtub water level, such as setting the filling water level.

Further, in this embodiment, since the valve opening / closing mechanism of the drain valve 12 is provided in the tank 5, an effect that the height from the bottom surface to the floor surface of the tank 5 can be reduced is obtained. . The valve opening and closing mechanism of the drain valve 12 is shown in FIG.
(A), when projecting downward from the bottom surface of the tank 5, a problem arises in that the height space between the floor surface and the bottom surface of the tank must be increased, and the valve opening / closing mechanism portion is provided in FIG. If it protrudes laterally from the side wall of the tank 5 as shown in (b), a step is generated between the tank bottom surface and the drain port, and there is a problem that dust accumulated on the tank bottom surface cannot be effectively discharged. However, in the case of the present embodiment, by providing the drain port 10 on the tank bottom and providing the valve opening and closing mechanism of the drain valve 12 in the tank 5, the height space between the floor and the tank bottom can be reduced. At the same time, an excellent effect that dust accumulated on the tank bottom surface can be effectively discharged from the drain port 10 is obtained.

FIG. 6 shows a second embodiment of the present invention. In the second embodiment, a water heater 61 capable of filling with hot water is connected to the system of the first embodiment to provide a system configuration of a fully automatic bath kettle with a washing function. This is the same as the first embodiment.

In the second embodiment, the hot water supply pipe of the water heater 61
62 and the return pipe 34 on the side of the heater 28 are communicatively connected by a connecting pipe 63,
The connecting pipe 63 is provided with a water supply valve 41 and a flow sensor 42.
The inlet side of the water supply pipe connected to the inlet of the hot water supply heat exchanger 64 of the water heater 61 is connected to a water supply source such as tap water, and the water supply pipe 40 is provided with a flow rate sensor 65. A hot water temperature sensor 66 is provided on the inlet side of the hot water heat exchanger 64, and a hot water temperature sensor 67 is provided on the outlet side of the hot water heat exchanger 64.

In the second embodiment, the bathtub cleaning operation can be performed by the same operation as the first embodiment. After the completion of the bathtub cleaning, the water supply valve 41 is opened, and the hot water produced by the water heater 61 is opened. Is supplied to the cleaning liquid and the recirculation circuit, and the bathtub 1 can be filled with water through the circulation circuit.

It should be noted that the present invention is not limited to the above embodiments, but can take various embodiments.
For example, in each of the above embodiments, the heater 28 is constituted by a gas-fired heater, but may be constituted by another heating means such as an oil-fired heater or an electric heater. Further, the cleaning nozzles 48 and 49 of the above-described embodiment also serve as discharge ports of the recirculating hot water, but when they are used as nozzles dedicated for jetting the cleaning liquid, they may be provided in places other than the bathtub wall surface, such as the bathtub lid 50. it can.

[0040]

According to the present invention, a tank is provided at the lower side of the bathtub, and the cleaning liquid stored in the tank is circulated and injected from the cleaning nozzle to the inner wall surface of the bathtub. The cleaning liquid can be vigorously jetted and collided against the bottom surface, and dirt can be cleanly removed over the corners of the inner wall surface of the bathtub. In addition, since the cleaning liquid is repeatedly sprayed and used repeatedly, there is no waste in using the detergent.

Also, the pressure opening of the pressure introducing pipe facing the opening of the bottom of the bathtub is covered with a cover, so that the impingement force of water or hot water sprayed from the washing nozzle can be reduced by the pressure detecting surface of the pressure introducing pipe. Can be prevented, thereby enabling accurate detection of the bathtub water level while water and hot water are being circulated and sprayed, and this water level detection enables the optimum water amount of the cleaning liquid to be set accurately. In addition, it is possible to obtain an excellent effect that the concentration of the detergent in the cleaning liquid can be regulated at a constant level.

Further, in the structure in which the valve opening / closing mechanism of the drainage means is provided in the tank, space saving can be achieved as compared with a system in which the valve opening / closing mechanism is provided on the lower surface of the tank or in the lateral direction. The height between the bottom surface and the floor of the tank can be reduced.

Further, by providing the upper surface of the tank with a gradient rising toward the communication port to the bathtub, even if air is mixed with the cleaning liquid and enters the tank during the cleaning of the bathtub, the air remains in the tank. It becomes easy to escape to the bathtub side along the gradient, it is possible to prevent the air from being sucked into the circulation pump together with the cleaning liquid, and the operation of the circulation pump can be performed smoothly. In addition, by providing a slope that descends from the periphery to the drain port on the bottom surface of the tank, when the cleaning liquid in the tank is discharged at the end of bathtub cleaning, dust accumulated on the tank bottom surface is applied to the slope surface. It is easy to discharge the water from the drain port to the outside, and it is possible to prevent dust from accumulating in the tank.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram illustrating a first embodiment of a bathtub cleaning apparatus according to the present invention.

FIG. 2 is a block diagram of a main configuration of a control device constituting the system of the embodiment.

FIG. 3 is a flowchart of a cleaning operation in the embodiment.

FIG. 4 is a continuation of the flowchart of FIG. 3;

FIG. 5 is an explanatory view of a problem in a case where a drain valve protrudes downward or laterally from a tank provided at a lower part of a bathtub.

FIG. 6 is a system configuration diagram of a second embodiment of the present invention.

[Explanation of symbols]

 1 Bathtub 5 Tank 8, 9 Inclined surface 12 Drain valve 19 Cover 25 Pressure inlet tube 28 Heater 35 Circulation pump 48, 49 Washing nozzle 53 Detergent tank

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Tetsuo Ueda 3-4 Fukamidai, Yamato-shi, Kanagawa Prefecture Inside Gaster Co., Ltd. 4272 (JP, U) JP 4-71592 (JP, U) JP 3-54693 (JP, Y2) JP 3-23169 (JP, Y2)

Claims (4)

(57) [Scope of request for utility model registration] 1. A bathtub cleaning apparatus comprising: a cleaning nozzle for injecting a cleaning liquid onto an inner wall surface of a bathtub; and a circulation circuit incorporating a circulation pump for circulating the cleaning liquid injected from the cleaning nozzle to the cleaning nozzle via a heater. A tank communicating with the bathtub is provided below the bottom of the bathtub. A return side of the circulation circuit is connected to the tank. The tank has a drainage means for draining bathtub water and a bathtub level. pressure introduction pipe is provided for detecting the pressure guide
The tip of the irrigation tube faces the opening on the bottom of the bathtub from the tank side.
The opening at the tip of this pressure introduction pipe prevents collision of the cleaning liquid jet.
Bath tub cleaning device covered with a cover . 2. The valve opening / closing mechanism of the drainage means is provided in a tank.
Bathtub cleaning device according to claim 1, wherein are. 3. A cleaning nozzle for spraying a cleaning liquid onto an inner wall surface of a bathtub.
And the cleaning liquid sprayed from this cleaning nozzle
Built-in circulating pump that circulates to the cleaning nozzle via
A bathtub cleaning device having a circulation circuit,
A tank communicating with the bathtub is provided on the lower side.
Is connected to the return side of the circulation circuit.
In the tank, check the drainage means for draining the bathtub water and the bathtub water level.
There is a pressure inlet pipe for discharging
The surface rises from the periphery to the entrance to the bathtub
A slope is provided, and the bottom of the tank is drained from the periphery.
A bathtub cleaning device provided with a slope that descends toward the water port. 4. An upper surface of the tank is provided with a gradient rising from the peripheral portion toward the communication port to the bathtub, and a lower surface of the tank is provided with a gradient descending from the peripheral portion to the drain port. claim 1 or claim 2 Symbol mounting bathtub cleaning device.