JP2555506Y2 - Bathtub cleaning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a bathtub cleaning apparatus for automatically cleaning a bathtub.

[Conventional technology]

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

[Problems to be solved by the invention]

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

The present inventors have repeated trial production research and obtained a prototype device that solves these problems. It connects the return pipe to the bottom of the bathtub, connects the suction side of the pump to the tip side of this return pipe, connects the outgoing pipe to the discharge side of the pump, and connects the tip side of the outgoing pipe to the cleaning nozzle. A circulating conduit is formed by communication, a heating source is incorporated into the circulating conduit, the cleaning liquid jetted from the cleaning nozzle is collected from the return pipe, and the collected cleaning liquid is guided to the cleaning nozzle by driving a pump. The cleaning liquid heated and heated as it passes is circulated and sprayed on the inner surface of the bathtub,
It removes dirt on the inner wall surface of the bathtub by the chemical cleaning power of the cleaning liquid and the jet collision force.

By the way, in recent general homes, electric water heaters and water heaters that can use showers have been widely used. However, these electric water heaters and water heaters cannot boil the bath or automatically fill the bathtub with water, and it is necessary to provide a fully automatic bath kettle to automatically reheat and refill the bath. is there. This fully automatic bath kettle is provided with a reheating circuit which is connected to the bathtub and a water heater which is maintained in the reheating circuit via a pouring valve. A pump and a reheating heat exchanger are incorporated in the reheating circuit, and when the pump is started to circulate hot water in the bathtub, the reheating heat exchanger heats the circulating hot water to recirculate the hot water. It can be fired. In addition, when filling the bathtub, with the pump stopped, open the pouring on / off valve, add the hot water from the water heater side, drop it into the bathtub through the circulation line, and set the water level of the bathtub to the set water level Is reached by closing the pouring on / off valve. This type of fully automatic bath kettle is configured as a single unit, in which the reheating heat exchanger and the water heater are integrally connected.

However, if a fully automatic bath kettle is installed in a home that already has an electric water heater or hot water heater using a shower, the hot water heater of the full automatic bath can be used as a heat source for the shower. There was a waste in the use of the equipment that it would be jarred with a water heater or water heater.

In addition, when the bathtub cleaning device of the proposed device is separately provided in a bathroom provided with a fully automatic bath kettle, not only is the effective use space in the bathroom narrowed, but also a pump for cleaning liquid circulation and reheating of the bathtub hot and cold water. It is necessary to separately provide a pump for circulation, and furthermore, a heater for cleaning liquid and a heater for reheating hot water have to be separately prepared, resulting in wasteful use of equipment.

The present invention has been made to solve the above-mentioned problems, and the purpose is to connect a pump and a heater for additional heating and cleaning, and to connect an existing electric water heater or water heater using a shower. By doing so, these existing equipment can be used as a hot water supply heating source for automatic hot water filling, and furthermore, the cleaning liquid circulated and sprayed on the inner wall of the bathtub can clean the inner wall of the bathtub cleanly. Can and
An object of the present invention is to provide a bath tub cleaning device that does not waste detergent.

[Means for solving the problem]

The present invention is configured as follows to achieve the above object. A cleaning nozzle that is disposed on the side wall of the bath tub with the injection port facing the inside of the bath tub and that impinges the cleaning liquid toward the inner wall surface of the bath tub facing the injection port, and the cleaning liquid sprayed from the cleaning nozzle onto the inner wall surface of the bath tub at the bottom of the bath tub A cleaning liquid circulation pipe with a built-in pump, which is recovered from the cleaning nozzle and supplied to the cleaning nozzle, a heater that is incorporated into the cleaning liquid circulation pipe and heats the circulation cleaning liquid, and heats the circulation cleaning liquid by the heater and the cleaning nozzle. A control device for controlling the circulating injection of the cleaning liquid toward the inner wall surface of the bathtub, a water supply pipe is connected to the cleaning liquid circulation pipe, and an inlet of the water supply pipe is connected to a water supply side pipe and hot water. A water supply temperature control means is provided which is branched into a side pipe and mixes water supplied from the water supply side pipe and hot water supplied from the hot water side pipe to produce hot water having a specified temperature. Is characterized by To have.

[Action]

In the present invention, the pump is driven in the same manner as the proposed device,
The cleaning liquid is supplied to the cleaning nozzle through a cleaning liquid circulation pipe while being heated to a predetermined temperature by a heater, and is circulated and jetted from the cleaning nozzle to the inner wall surface of the bath tub for a predetermined time so that the dirt on the inner wall of the bath tub is chemically cleaned by the cleaning liquid. Cleanly dropped by force and jet impact force. After this cleaning liquid is sprayed, water or hot water is introduced from the water supply pipe to the cleaning liquid circulation pipe and is sprayed from the cleaning nozzle to the inner wall surface of the bathtub, whereby the cleaning liquid adhering to the inner wall surface of the bathtub and dirt components dropped by the cleaning liquid are removed. Is washed out and drained, and the automatic cleaning of the bathtub is completed.

Next, hot water is supplied from the hot water side pipe and water is supplied from the water supply side pipe, and the water and hot water are mixed by the hot water supply temperature control means so as to reach a specified filling temperature, and the hot water is washed with a cleaning liquid. Filling is performed by dropping into a bathtub through a circulation pipe.

When the hot water in the bath tub cools down after this hot water filling, the hot water in the bath tub is circulated through the cleaning liquid circulation pipe, and the circulating hot water is heated by the cleaning liquid heater, so that reheating can be performed.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a system configuration of a first embodiment of 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 the mutually facing side wall portions of the bathtub 1 with the injection holes (injection ports) facing the inside of the bathtub. The cleaning nozzles 4a and 4b have a built-in valve mechanism, and by controlling this valve mechanism, the passage leading to the injection hole can be opened and closed. The outlet side of the branch outward pipe 5a is connected to the cleaning nozzle 4a, and the outlet side of the branch outward pipe 5b is connected to the cleaning nozzle 4b. The inlet pipes 5a and 5b are joined at the inlet side to form a single outlet pipe 5 which is connected to the discharge side of a pump 7 via an electric heater 6 functioning as a heater.

A return pipe 8 is connected to the suction side of the pump 7, and the return side of the return pipe 8 is connected to return pipe opening / closing valves 10a and 10b such as solenoid valves.
And a first return branch pipe 11 and a second return branch pipe 12 are provided. The return port side of the first return branch pipe 11 is connected to the bottom of the bathtub 1, in this embodiment, the drain pipe 2, and the first return branch pipe 11 has a pressure for detecting the water level in the bathtub 1. A sensor 13 is provided. The return port of the second return branch pipe 12 is connected to the side wall of the bathtub 1.

The path from the bathtub 1 to the first return branch pipe 11, the return pipe 8, the pump 7, the electric heater 6, the forward pipe 5, and the branch forward pipes 5a, 5b to the cleaning nozzles 4a, 4b is a cleaning liquid circulation path. And from the bathtub 1 to the second return branch pipe 12,
The path leading to the washing nozzles 4a, 4b via the return pipe 8, the pump 7, the electric heater 6, the outgoing pipe 5, and the branch outgoing pipes 5a, 5b in this order constitutes a reheating circuit. A pipe 14 between the pump 7 and the electric heater 6 is provided with a water flow sensor 15 for detecting the flow of liquid in the pipe and a temperature sensor 16 for detecting the temperature of the circulating fluid. Is connected to a detergent supply pipe 17 and a water supply pipe 19, and the detergent supply pipe 17 is connected to a detergent tank 20 via a detergent opening / closing valve 18 such as a solenoid valve. The detergent tank 20 stores a liquid detergent. The detergent supply pipe 17, the detergent opening / closing valve 18, and the detergent tank 20 constitute a detergent introduction device.

The water supply pipe 19 is provided with a water supply opening / closing valve 21 such as an electromagnetic valve, a flow rate sensor 22 for detecting a flow rate of water or hot water flowing in the pipe, and a water supply temperature sensor 23 for detecting a temperature of hot water flowing in the pipe. . The inlet side of the water supply pipe is the hot water side pipe 19a and the water supply side pipe 1
The hot water pipe 19a is connected to a hot water supply pipe 25 of a hot water supply heat source 24 such as an electric water heater or a water heater. The water supply side pipe 19b is provided with a water supply control valve 27 as water supply hot water temperature control means for controlling the amount of water supply by opening and closing the valve. The inlet side of the water supply side pipeline 19b is connected to a water supply source such as a tap.

Pipe opening / closing (valve opening / closing) control of the drain valve 3, return pipe opening / closing valves 10a, 10b, detergent opening / closing valve 18, and water supply opening / closing valve 21;
The controller 28 controls the opening / closing amount of the water supply control valve 27, the opening / closing of the cleaning nozzles 4a and 4b, the operation control of the pump 7, and the heating control of the electric heater 6. A remote controller 30 is connected to the control device 28. The remote controller 30 has an automatic button 31 for continuously performing a washing operation, a hot water filling operation and, if necessary, a reheating operation, and a cleaning for performing only the washing operation. Button 32, hot water level setting section 33, bath water temperature setting section
34 and a hot water supply temperature setting unit 35 are provided.

As shown in FIG. 2, the control device 28 includes a signal input unit 36.
, A determination / instruction unit 37, a timer 38, a calculation unit 40, and a memory 41. The signal input unit 36 receives a signal from the remote controller 30, a water level detection signal from the pressure sensor 13, a water flow detection signal from the water flow sensor 15, a temperature detection signal from the temperature sensors 16 and 23, and a signal from the flow sensor 22. Upon receiving the flow rate detection signals, these signals are added to the judgment / command unit 37. Judgment
The command section 37 is provided with a signal from the signal input section 36 and a memory 41.
After receiving the program information from bath tub cleaning to hot water filling and reheating as needed, the progress status of the program from bath tub cleaning operation to reheating operation is grasped. The operation is commanded, and the calculation unit 40 is instructed to calculate the amount of water and the like, and various valves 3, 10a, 10
b, 18, 21 and the washing nozzles 4a, 4b, while outputting an opening / closing control signal, the opening / closing amount of the water supply control valve 27, the operation of the pump 7,
The heating operation of the electric heater 6 is controlled. As described above, the memory 41 has a built-in program for automatic operation from bathtub cleaning to bath reheating, and stores a calculation result of the calculation unit 40 as necessary.

This embodiment is configured as described above, and in addition to having an automatic cleaning function of the bathtub 1, a hot water supply pipe 19a is connected to a hot water supply heat source such as an electric water heater or a water heater using a shower provided at home. By connecting to the hot water supply pipe 25 of the vessel 24, it functions as a fully automatic bath kettle. In FIG. 1, reference numeral 42 denotes a power switch for driving the hot water supply heat source 24.

Next, an operation example from the bathtub cleaning to the filling of the hot tub when the hot water pipe 19a is connected to the hot water supply pipe 25 of the hot water supply heat source unit 24 will be described with reference to the flowchart shown in FIG. First, in a state where the power switch 42 is turned on, the filling water level is set by the filling water level setting unit 33, the bath temperature is set by the bath water temperature setting unit 34, and then the automatic button 31 of the remote control 30 is turned on. Then, the ON signal is applied to the determination / command unit 37 via the signal input unit 36 of the control device 28. Upon receiving the command of the automatic operation mode, the determination / command unit 37 performs a preparation operation for introducing a detergent for releasing the inside of the reheating circuit to the atmosphere in steps 101 to 105.

That is, in step 101, a water level detection signal from the pressure sensor 13 is received, and it is determined whether or not there is hot water in the bathtub 1. If the inside of the bathtub 1 is empty, the detergent on / off valve 18 is opened in step 106, and the operation shifts to the detergent charging operation. On the other hand, when the water level is detected and it is determined that there is hot water in the bathtub, the washing nozzles 4a and 4b are opened in the next step 102, and at the same time, the return pipe opening / closing valve 10b is opened. Next, in step 103, the drain valve 3 is opened to start draining hot water from the bathtub 1. With the drainage of the hot water, the level of the hot water accumulated in the bathtub gradually decreases, and when the water level falls below the injection holes of the cleaning nozzles 4a and 4b, the air pressure from the injection holes of the cleaning nozzles 4a and 4b is reduced to the pipe side. The hot and cold water that has accumulated in the reheating circulation circuit enters the bathtub from the return circulation port of the second return branch pipe 12 as the water level of the bathtub 1 decreases. Then, when the water level in the bathtub drops below the return circulation port, the inside of the reheating circulation pipe except for the first return branch pipe 11 is drained and all of the water is opened to the atmosphere.

The reduced state of the bathtub water level due to the drainage is detected by the pressure sensor 13 from time to time. And bathtub 1 in step 104
It is determined whether the inside is empty. When the water level is detected by the pressure sensor 13, it is determined that the inside of the bathtub 1 is not empty, and when the detection signal of the pressure sensor 13 detects the reference pressure that the bathtub is empty, the bathtub 1 becomes empty. The drain valve 3 is closed in step 105.

By the operations of steps 101 to 105, the inside of the reheating circuit is opened to the atmosphere, and the detergent easily enters the reheating circuit. In this state, in step 106, the detergent on-off valve 18 is opened, and the detergent is supplied from the detergent tank 20 into the recirculating duct, in this embodiment, into the duct 14. At the same time, it is judged whether or not ₁ h predetermined T has elapsed in step 107. That is, the control device 28 is
After adding open signal 18, a predetermined amount of time to count the time by using the timer 38, while the T ₁ is not elapsed leave open the detergent-off valve 18, the time T ₁ has elapsed ( For example
It is determined that the detergent (20 cc) has been supplied from the detergent tank 20 through the detergent supply pipe 17 into the pipe 14, and the detergent on-off valve 18 is closed in step 108.

Next, the operation proceeds to the cleaning operation in steps 109 to 151. First, when the water supply on-off valve 21 is opened in step 109, hot water of the temperature (for example, 90 ° C.) generated by the hot water supply heat source 24 is supplied from the hot water supply heat source 24 to the reheating circuit.
At this time, the temperature of the hot water is detected by the water supply temperature sensor 23, and the temperature detection signal is applied to the control device 28. The determination / instruction unit 37 controls the opening amount of the water supply control valve 27 in step 110 so that the temperature becomes S ₁ ° C. (for example, 60 ° C.) previously given to the memory 41 or the like. As a result, the water supplied from the water supply side pipe 19b and the hot water supplied from the hot water side pipe 19a are mixed, and hot water having a temperature corresponding to the opening amount of the water supply control valve 27,
That is, hot water of S ₁ ° C is produced, and this hot water is dropped into the reheating line. This dropped hot water is outgoing pipe 5
And is supplied into the bathtub 1 from the washing nozzles 4a and 4b. On the other hand, the hot water passing through the return pipe 8 enters the bathtub through the second return branch pipe 12 together with the detergent. As a result, a cleaning liquid in which hot water and a detergent are mixed accumulates in the bathtub 1.

In step 111, the amount of hot water supplied to the bathtub is reduced to a predetermined X ₁ l
It is determined whether or not it has become. In other words, the judgment / command section
37 receives the signal from the flow rate sensor 22 and causes the calculation unit 40 to cumulatively calculate the supplied water amount every moment. As long as the calculated water volume does not reach X ₁ l, the water supply opening / closing portion 21 is kept open,
When the calculated water volume reaches X ₁ l, the water supply on-off valve 21 and the water supply control valve 27 are closed. By supplying the washing water of X ₁ l to the bathtub 1, a washing liquid (a mixture of hot water and a detergent) necessary for smoothly operating the pump 7 is stored on the bottom side of the bathtub 1.
If the amount of the cleaning liquid is too small, the pump 7 is activated to supply the cleaning liquid from the first return branch pipe 11 side to the cleaning nozzles 4a and 4b through the cleaning liquid circulation pipe. It will be sucked and impair 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 hot water of the X ₁ l is supplied, at the same time closing the water supply control valve 27 and the water supply on-off valve 21 the as in step 112, the washing nozzle 4b and return pipe on-off valve 10b is closed. Next, in step 113, the return pipe opening / closing valve 10a is opened. Then, at step 114, the pump 7 is started. When the pump 7 is started, the cleaning liquid accumulated at the bottom of the bathtub 1 is sucked into the pump 7 through the first return branch pipe 11, and the sucked cleaning liquid is further discharged from the discharge side of the pump 7 to the electric heater 6.
Here, the cleaning liquid is heated to a temperature suitable for exerting the chemical cleaning ability, in this embodiment, 50 to 60 ° C., and the heated cleaning liquid passes through the outgoing pipe 5 and flows from the cleaning nozzle 4a to the cleaning nozzle 4a. Injection is performed toward the inner surface of the bathtub facing the injection port (injection hole) of the cleaning nozzle 4a.

The sprayed cleaning liquid flows down to the bottom side of the bathtub 1,
The washing liquid that has flowed to the bottom side is again returned to the first return branch pipe.
After being sucked from the pump 11 by the pump 7 and similarly passing through the electric heater 6, it is ejected from the washing nozzle 4a into the bathtub. In this way, the circulation injection of the cleaning liquid is repeatedly performed through the cleaning liquid circulation pipe. During this circulation injection, the temperature control of the cleaning liquid is performed in steps 115 to 118.

That is, based on the temperature detection signal obtained from the temperature sensor 16, the controller 28 sets the temperature of the cleaning liquid to S ₂ ° C (for example, 60
C) is determined at step 115. When the temperature of the cleaning liquid is equal to or lower than S ₂ ° C, the electric heater 6 is heated in step 116 to heat the cleaning liquid. Then, in step 117, it is again determined whether or not the temperature of the cleaning liquid is equal to or higher than S ₂ ° C. When the temperature is lower than S ₂ ° C, the electric heater 6 is continuously driven to be heated, and the temperature of the cleaning liquid is reduced to S ₂ ° C. When the above is reached, the heater heating is stopped.

Next, in step 119, the pump 7 determines whether or not the lapse T ₂ hours after being started in step 114. When not elapsed T ₂ hours repeats the operation from step 115 118 continues to control the temperature of the washing liquid circulating jetting temperature of S _2. Step when time has passed T ₂ hours
The pump 7 is stopped at 120, the washing nozzle 4a is closed and the washing nozzle 4b is opened at step 121. Then, in step 122, the pump 7 is started again. Then, the cleaning liquid circulated from the bathtub 1 through the first return branch pipe 11 passes through the electric heater 6 and is similarly jetted into the bathtub from another cleaning nozzle 4b, and the circulation injection of the cleaning liquid is repeatedly performed. It is. At this time, in steps 123 to 126, the temperature of the cleaning liquid is controlled in the same manner as in the operations in steps 115 to 118, and the cleaning liquid is sprayed into the bathtub 1 while being maintained at a temperature of S ₃ ° C (for example, 60 ° C).

Step 127 In from the time the pump starts in step 122 whether T ₃ hours has passed determination is made similarly to the step 119, the pump 7 at step 128 when the elapsed T ₃ hours
Is stopped, and then in step 129, the drain valve 3 is opened. Subsequently, at step 130, the return pipe on-off valve 10a is closed,
The cleaning liquid in the bathtub 1 is drained. Next, in step 131, the water supply on-off valve 21 is opened, and in step 132, the water supply control valve 27
The amount of hot water supplied from the hot water supply heat source 24 is controlled to S ₄ ° C. (for example, 60 ° C.), and this hot water is supplied to the cleaning nozzle 4 b while washing the inside of the forward pipe 5. And
The hot water is sprayed from the cleaning nozzle 4b to the inner wall surface of the bathtub, and the cleaning liquid adhering to the inner wall surface of the bathtub and the dirt component removed by the cleaning liquid are washed off to the bottom side of the bathtub 1 and discharged.

In step 133 the washing time by the hot water is determined whether elapsed T ₄ hours, injection of the hot water from the water supply on-off valve 21 and the washing nozzle 4b closes the water supply control valve 27 at step 134 when the T ₄ hours have elapsed To stop. And step 135
To open the washing nozzle 4a and close the washing nozzle 4b. Next, in step 136, the water supply opening / closing valve 15 is opened, and in step 137, the opening / closing amount of the water supply control valve 27 is controlled to supply hot water of S ₅ ° C. (for example, 60 ° C.) to the cleaning nozzle 4a. Hot water is similarly sprayed toward the inner wall surface of the bathtub, and the washing liquid on the inner wall surface of the bathtub is dropped while washing the pipeline. Then in step 139 when the injection of the hot water from the cleaning nozzle 4a has passed ₅ hours T water supply on-off valve 21
Then, the water supply control valve 27 is closed to stop the injection of hot water.

Next, in step 140, the washing nozzle 4a is closed, the return pipe opening / closing valve 10b is opened, and the inside of the second return branch pipe 12 is washed in steps 141 to 145. That is, in step 141, the water supply on-off valve 21 is opened, and then in step 142
The opening and closing amount of the water supply control valve 27 is controlled by S ₆ ° C (for example, 60 ° C).
℃) hot water is produced, this hot water passes through the return pipe 8, enters the second return branch pipe 12 from the return pipe opening / closing valve 10 b,
The washing liquid adhering to the inside of the return branch pipe 12 enters the bathtub 1 while being washed, and is discharged. This second return branch
When the hot water in the inside 12 has passed for T ₆ hours, the water supply opening / closing valve 21 and the water supply control valve 27 are closed, and the hot water cleaning of the second return branch pipe 12 is stopped. Next, in steps 145 to 149, the hot water in the first return branch pipe 11 is similarly washed. In this hot water washing, the return pipe opening / closing valve 10b is closed, 10a is opened, and the hot water supplied from the hot water supply heat source 24 is supplied to the water supply control valve 27 at S ₇ ° C. (for example, 60 ° C.).
C.) and passed through the first return branch pipe 11. After the hot water washing of the first return branch pipe 11 is completed, the return pipe opening / closing valve 10a is closed in step 150, and then the drain valve 3 is closed in step 151, whereby the cleaning operation of the bathtub 1 is completed.

Next, the process proceeds to the filling operation of steps 152 to 156. First, in step 152, the cleaning nozzles 4a and 4b are opened, and at the same time, the return pipe opening / closing valve 10b is opened. Next, at step 153, the water supply on-off valve 21 is opened, and then at step 154, the water supply control valve 2 is opened.
The control of 7 is performed. That is, control device 28 receives the temperature detection signal from feed water temperature sensor 23, and adjusts the temperature of hot water supplied from hot water supply heat source 24 side to bath hot water setting unit 34 of remote control 30.
The opening amount of the water supply control valve 27, that is, the water supply amount of the water supply side pipe 19b to be mixed with the hot water supplied from the hot water supply heat source device 24 side is controlled by the remote controller 30 so as to reach the temperature set at S ₈ ° C. Hot water of the set temperature is created and supplied to the recirculation line.

The hot water that has entered the reheating circulation line passes through both the return pipe 8 and the forward pipe 5 and the washing nozzles 4a and 4b and the second return branch pipe 1
It is dropped into bathtub 1 from the return circulation port of 2. Then, the level of the hot water in the hot water is detected by the pressure sensor 13. In step 155, based on the water level detection signal from the pressure sensor 13, the detected water level is
It is determined whether or not the water level has reached the level set in the step, and when the detected water level has reached the set level, the water supply on-off valve 21 and the water supply control valve
27 is closed and the filling operation is stopped. During the filling operation, the hot water supplied from the water supply pipe 19 is simultaneously dropped from the outgoing pipe 5 and the return pipe 8 side, so that the filling water amount increases, and the filling can be completed in a short time. .

When the hot water is cooled after the completion of the hot water filling, the pump 7 is started and the hot water in the bathtub 1 is returned from the second return branch pipe 12 to the return pipe 8, the pipe 14, the electric heater 6, the forward pipe 5, and Branch outgoing pipe 5a,
5b through the washing nozzles 4a and 4b, circulates by discharging into the bathtub, and circulating hot water is heated by the electric heater 20 to control the hot water in the bathtub 1 to the set temperature of the bath water temperature to control the heating. In some cases, high-temperature hot water can be replenished from the hot water supply heat source 24 side and then fed into the bathtub 1 through the circulation pipe, and the hot water can be additionally heated by the hot water.

In this embodiment, since the heater is constituted by the electric heater 6, when the cleaning device is installed in the bathroom, the construction of the exhaust system necessary for the combustion type heater is unnecessary, and the installation and installation of the device are performed. Becomes very easy.

FIG. 4 shows a second embodiment of the present invention. The second embodiment is significantly different from the first embodiment in that the heater for heating the cleaning liquid and the reheating water is constituted by a gas-fired heater. This heater comprises a heat exchanger 43 and a gas burner 44, and the gas burner 44 has a gas amount adjusting valve 45 for adjusting a gas amount.
Is provided. Further, a temperature sensor 16 is provided on the input side of the heat exchanger 43, and an output side temperature sensor 46 is provided on the output side of the heat exchanger 43. In the second embodiment,
A detergent input device comprising a detergent on-off valve 18 and a detergent tank 20 is connected to the forward pipe 5 side. The temperature detection signal of the output side temperature sensor 46 is applied to a signal input section 36 of the control device 28 as shown by a chain line in FIG.

In the second embodiment, the cleaning device is used alone, that is, in a use state in which the hot water side pipe 19a is not connected to the hot water supply heat source 24, the water supplied from the water supply side pipe 19b is returned to the return pipe opening / closing valves 10a, 10b. The bathtub 1 can be filled with hot water by closing the heat exchanger 43 and passing it through.
28 calculates the temperature difference between the temperature sensor 16 and the outlet temperature sensor 46, receives the information on the flow rate detected by the flow rate sensor 22, and turns to the hot water of the temperature set by the bath hot water temperature setting unit 34 of the remote control 30 Thus, the gas amount control valve 45 is proportionally controlled to produce hot water at the set temperature of the remote controller.

In FIG. 4, the hot water side pipe 19a is connected to the hot water supply pipe 25 of the hot water supply heat source 24.
In this system configuration, the same operation as in the flow chart shown in FIG. 3 of the first embodiment enables the automatic operation from the washing of the bathtub 1 to the filling of the bathtub, and the filling of the bathtub. Or, reheating operation after water filling becomes possible. In these operations, the heating of the cleaning liquid and the heating of the additional hot water are performed by the heat exchanger 43, and the combustion control of the gas burner 44 (opening / closing control of the gas amount control valve) at that time is determined by the control device 28. Part 37
This is performed according to a control signal from.

Note that the present invention is not limited to the above embodiments, and various embodiments can be adopted. For example, in the first embodiment, the heater is constituted by the electric heater 6, and in the second embodiment, the heater is constituted by the gas-combustion heat exchanger 43. Can be constituted by another heating source, for example, an oil-fired heater or the like as long as it has a function of heating the oil.

Further, in each of the above embodiments, the water supply control valve 27 is provided on the water supply side pipe 19b side, but this water supply control valve 27 may be provided on the hot water side pipe 19a side, and in some cases, the water supply side pipe 19b and It may be provided on both sides of the hot water pipe 19a.

Further, the hot water temperature control means has a function of mixing hot water supplied from the hot water pipe 19a with hot water supplied from the hot water pipe 19b to produce hot water having a specified (set) temperature. Other means other than the water supply control valve 27,
For example, it can be constituted by various electric or mechanical means such as a wax thermo faucet.

[Effect of the invention]

In the present invention, the cleaning liquid impinging and jetting from the cleaning nozzle onto the inner wall surface of the bathtub is guided from the bottom of the bathtub to the cleaning nozzle while being heated to a predetermined temperature (a temperature at which the chemical cleaning power is maximized) through the cleaning liquid circulation conduit. , Because it is configured to repeatedly circulate and spray on the inner wall surface of the bathtub, it is possible to clean the inner wall surface of the bathtub cleanly by the synergistic effect of the chemical cleaning power of the cleaning liquid and the jet impingement force. Since the washing liquid is repeatedly used, there is no waste in using the detergent, which is very economical. In addition, as described above, the cleaning liquid is circulated through the cleaning liquid circulation pipe by the pump drive.
Cleaning of the cleaning liquid circulation pipe can also be favorably performed.

Further, the cleaning liquid circulation line can also serve most or all of the reheating circulation line, and the heating of the cleaning liquid and the reheating of the circulating hot and cold water can be performed by one heater. Since the circulation of the cleaning liquid and the circulation of the additional hot water can be performed by the pump, there is no waste in using the equipment. In addition, it is possible to achieve simplification and downsizing of the cleaning apparatus having the bathtub cleaning function and the reheating function, and to reduce the apparatus cost. Further, since the size of the device can be reduced, even if the device is installed in the bathroom, the effective use space of the bathroom is not greatly reduced.

Further, the inlet side of the water supply pipe connected to the cleaning liquid circulation pipe is branched into a water supply pipe and a hot water pipe, and the water supplied from the water supply pipe and the hot water supplied from the hot water pipe are used. Is provided with hot water supply temperature control means for producing hot water of the specified temperature by mixing the hot water, so that the hot water side pipeline is already installed in the home, such as an electric water heater using a shower or a hot water heater. Can be used as a hot water heater for an automatic bath kettle, and the conventional inconvenience, that is, installing a new automatic bath hot water heater wastes hot water from a shower. Is very convenient. In addition, regardless of the temperature of the hot water supplied from the hot water supply heat source, the hot water of that temperature can be mixed with water to produce hot water of a desired temperature, so that not only is it very convenient in use, but also from this, hot water is supplied. There is also obtained an effect that a control unit (for example, a remote controller) for controlling the tapping temperature of the heat source unit can be omitted.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing a first embodiment of a bathtub cleaning apparatus according to the present invention, FIG. 2 is a configuration diagram of a main part of a control device constituting the embodiment, and FIG. FIG. 4 is a flowchart showing a driving operation, and FIG. 4 is a system configuration diagram showing a second embodiment of the present invention. 1 ... bathtub, 2 ... drain pipe, 3 ... drain valve, 4a, 4b ...
Cleaning nozzle, 5 ... Outgoing pipe, 5a, 5b ... Branch outgoing pipe, 6 ...
Electric heater, 7 Pump, 8 Return pipe, 10a, 10b
... Return pipe on-off valve, 11 ... First return branch pipe, 12 ... Second
Return branch pipe, 13 …… Pressure sensor, 14 …… Pipe line, 15 ……
Water flow sensor, 16: Temperature sensor, 17: Detergent supply pipe, 18
…… detergent on-off valve, 19 …… water supply pipe, 19a …… hot water side pipe, 1
9b ... water supply side line, 20 ... detergent tank, 21 ... water supply on-off valve, 22 ... flow rate sensor, 23 ... water supply temperature sensor, 24 ...
Hot water supply heat source device, 25 Hot water supply pipe, 27 Water supply control valve, 28
Control device, 30 remote control, 31 automatic button, 32
Cleaning button, 33 ... hot water level setting section, 34 ... bath water temperature setting section, 35 ... hot water temperature setting section, 36 ... signal input section, 37
…… Judgment / command part, 38 …… Timer, 40 …… Calculation part, 41…
... Memory, 42 ... Power switch, 43 ... Heat exchanger, 44 ...
... gas burner, 45 ... gas amount control valve, 46 ... outlet temperature sensor.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshiya Okano 3-4 Fukamidai, Yamato City, Kanagawa Prefecture Inside Gaster Co., Ltd. 179888 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A cleaning nozzle which is disposed on a side wall of a bath tub with an injection port directed toward the inside of the bath tub, and which jets a cleaning liquid by impact toward a bath tub inner wall surface facing the injection port, and a cleaning liquid injected from the cleaning nozzle to the bath tub inner wall surface. Circulating pipe with built-in pump that collects water from the bottom of the bathtub and circulates it to the cleaning nozzle, a heater that is installed in the circulating pipe and heats the circulating cleaning liquid, and heats the circulating cleaning liquid by the heater And a control device for controlling the circulating injection of the cleaning liquid from the cleaning nozzle toward the inner wall surface of the bathtub, and a water supply pipe is connected to the cleaning liquid circulation pipe. A hot water supply temperature control means for branching into a side pipe and a hot water side pipe, and mixing water supplied from the water supply side pipe with hot water supplied from the hot water side pipe to produce hot water of a specified temperature. Bathtub cleaning equipment provided .