JP2980364B2 - Bathtub cleaning equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a bathtub cleaning method for automatically cleaning a bathtub.

[Conventional technology]

Japanese Utility Model Publication No. 63-71869 is known as an apparatus for cleaning a bathtub. This apparatus is provided with a washing nozzle for injecting a washing liquid containing a detergent into a lid of a bathtub, and a water injection nozzle for injecting water such as tap water.When washing the bathtub, the washing liquid is pumped from the washing tank by the washing nozzle. And spraying it into a bathtub to remove dirt.After that, water is supplied from a water supply source to a water spray nozzle and sprayed into the bathtub, and the dirt component of the bathtub dropped by the washing liquid is removed. The washing liquid is washed away and discharged from a 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 effectively cleaned. Further, since the cleaning liquid injected from the cleaning nozzle is not used repeatedly and flows out from the drain hole together with the water to be injected next, there is no waste in using the detergent.

The present 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 as it passes through is circulated and sprayed onto the inner wall surface of the bathtub, and the stain on the inner wall surface of the bathtub is removed by the chemical cleaning power and the jet impingement force of the cleaning liquid.

By the way, recently, a fully automatic bath kettle capable of filling a bath tub and reheating it has become widespread. It is conceivable to develop a system in which the cleaning device proposed above is incorporated in a bathtub equipped with such a fully automatic bath kettle, and the control device performs a fully automatic operation from washing of the bathtub to filling with hot water and reheating. In order to develop such a system, it is desirable to shorten the time from washing of the bathtub to reheating, so as to shorten the time from the start of washing until the bath can be taken. From this point of view, when washing the bathtub by fully automatic operation, reduce the amount of detergent to save waste of detergent, shorten the injection time of the cleaning liquid to shorten the cleaning time, and further reduce the noise of the cleaning liquid injection. For this purpose, it is convenient for use to perform a simple cleaning operation by slightly reducing the injection pressure of the cleaning liquid.

However, when the dirt on the inner wall of the bathtub is removed by simple cleaning, especially when the inner wall surface of the bathtub is extremely dirty such as a bubble bath, a slight amount of dirt may be left even after the cleaning. As the residual dirt accumulates, the dirt on the inner wall surface of the bathtub gradually becomes prominent, and this dirt must be removed in some cases. However, washing a bathtub by obtaining it is a hard job due to the forced posture, and it is a particularly painful job for the elderly and physically handicapped.

The present invention has been made in order to solve the above-described problems, and its purpose is to perform a simple bath tub cleaning by fully automatic operation, and even if dirt remaining after the cleaning gradually accumulates, it can be fully automated without manual operation. It is an object of the present invention to provide a bathtub cleaning device capable of performing a careful cleaning of a different system from the operation to cleanly remove dirt remaining after the cleaning.

[Means for solving the problem]

The present invention is configured as described below to achieve the above object. That is, the present invention is a bathtub cleaning device provided with a bath kettle capable of water filling or hot water filling and reheating of the bathtub, and the bathtub cleaning device is pressurized by detergent input means and a pump. A cleaning nozzle for injecting the supplied detergent onto the inner wall surface of the bathtub, a control device for controlling a bathtub cleaning operation, a water filling or hot water filling operation and a reheating operation in accordance with a given program, and a remote controller connected to the control device The remote control is provided with a fully automatic button for performing a fully automatic operation from washing operation to refilling via water filling or hot water filling, and a washing button for performing only the washing operation, and the control device is Means of a simple cleaning control function for performing a simple cleaning operation by a command of a fully automatic button; Is configured as characterized by having a means of carefully washing control function of performing more careful cleaning by changing the direction of increasing the any one or more of time and the washing nozzle injection pressure. Also, the present invention
A bathtub cleaning device provided with a bath kettle capable of filling a bathtub with hot water or hot water and reheating, the bathtub cleaning device includes a cleaning nozzle that injects a detergent-containing cleaning liquid onto a bathtub inner wall surface, A cleaning liquid circulation pipe with a built-in pump that collects the cleaning liquid injected from the cleaning nozzle into the bath from the bottom side of the bath and circulates the cleaning liquid to the cleaning nozzle; Cleaning device heating means, a control device for controlling the bathtub cleaning operation, water filling or hot water filling operation and reheating operation in accordance with a given program, and a remote control connected to the control device. There is provided a fully automatic button for performing a fully automatic operation from washing operation through water filling or hot water filling to reheating and a washing button for performing only the washing operation, The control device is a means of a simple cleaning control function for performing a simple cleaning operation according to the command of the fully automatic button, and a command of the cleaning button is used to control the amount of the detergent, the injection time of the cleaning liquid, and the injection pressure of the cleaning liquid. A means of a careful cleaning control function for performing more careful cleaning by changing any one or more in the increasing direction, and the remote control is provided with a cleaning button. It is also a feature of the present invention that a detergent amount setting unit that can be changed in a direction to increase the amount of detergent supplied by the detergent input unit during operation and an injection time setting unit that can be changed in a direction to increase the injection time of the cleaning liquid are provided. Configuration.

[Action]

In the present invention, when the fully automatic button of the remote controller is turned on, the bathtub is cleaned by a simple cleaning operation, that is, by a simple control method using a simple cleaning control function. In this cleaning, for example, a cleaning liquid (a mixture of water or hot water and cleaning) stored on the bottom side of the bathtub is guided to a cleaning nozzle through a cleaning liquid circulation pipe by pump activation, and is heated by heating means on the way to the cleaning nozzle. By circulating and jetting the heated cleaning liquid onto the inner wall surface of the bathtub, dirt on the inner wall surface of the bathtub is removed by the chemical cleaning power of the cleaning liquid and the jet impingement force. After the injection of the cleaning liquid, for example, water or hot water is supplied to the cleaning nozzle from the bath kettle via the cleaning liquid circulation pipe, and the water or hot water is jetted from the cleaning nozzle to the inner wall surface of the bathtub, whereby the inner wall surface of the bathtub is discharged. The cleaning solution adhering to the cleaning solution and the dirt components removed by the cleaning solution are discharged from the bathtub. Then, after this washing operation is completed, hot water filling (or water filling) and reheating are continuously performed, and the bath is heated.

In the case where dirt that cannot be completely removed is accumulated due to the simple bath tub cleaning by the fully automatic operation, the cleaning button is turned on to perform a more careful cleaning operation as follows. First, when the cleaning button is turned on, the cleaning control function is carefully performed, and the control device controls the amount of the detergent supplied from the detergent supplying means, the cleaning liquid injection time (pump rotation time), and the cleaning liquid injection pressure (pump of the pump). (The number of rotations per unit time) is changed in a direction to increase, so that more careful cleaning is performed, and the cleaning residue that cannot be completely removed by the simple cleaning operation is cleanly removed.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a cleaning system of one embodiment of a bathtub cleaning apparatus according to the present invention. In the figure, a drain pipe 16 is connected to the bottom of the bathtub 1 in which a lid 14 can be opened and closed, and an automatic drain valve 17 such as a solenoid valve is interposed in the drain pipe 16. Further, cleaning nozzles 18a,
18b is attached with the injection hole facing the inner wall of the bathtub.

In the present embodiment, the cleaning nozzles 18a and 18b have a valve mechanism built therein, and open / close a flow path (valve opening / closing) leading to an injection hole.
Has become possible. The cleaning nozzle 18a is a branch outgoing pipe 6a.
The cleaning nozzle 18b is connected to the branch outgoing pipe 6b.
It is connected to the. Then, the inlet side of the outgoing pipe 6 where the branch outgoing pipes 6a and 6b are merged into one is connected to the discharge side of the pump 4 via a reheating heat exchanger 10 functioning as a heating means. The outlet side of the return pipe 5 is connected to the suction side of the pump 4, and the return end side of the return pipe 5 is provided with return pipe opening / closing valves 20, 21 such as solenoid valves for switching flow paths, and is provided with a first return branch. It is branched into a pipe 22 and a second return branch pipe 23, and the return circulation port of the first return branch pipe 22 is connected to the bottom side of the bathtub 1, in this embodiment, the drain pipe 16. A pressure sensor 8 functioning as a water level sensor is connected to the first return branch pipe 22 so that the water level in the bathtub 1 can be constantly detected by the pressure sensor 8. The return circulation port side of the second return branch pipe 23 is connected to the side wall of the bathtub 1. The first return branch pipe 22, the return pipe 5, the pump 4, the reheating heat exchanger 10, the outgoing pipe 6, and the pipe leading to the cleaning nozzles 18 a and 18 b via the branch outgoing pipes 6 a and 6 b are the cleaning liquid circulation pipes. The pipes from the second return branch pipe 23 to the washing nozzles 18a, 18b via the return pipe 5, the pump 4, the reheating heat exchanger 10, the outgoing pipe 6, and the outgoing branch pipes 6a, 6b are similarly provided. The boil circulation circuit 3 is constituted. In addition, the closed path | route which added the bathtub 1 to the cleaning liquid circulation pipe | tube constitutes the cleaning liquid circulation path.

The return pipe 5 is provided with a water flow sensor 24 for detecting the flow of the liquid flowing in the pipe, and a temperature sensor 25 for detecting the temperature of the liquid flowing in the pipe. Further, the return pipe 5 includes a detergent supply pipe 26. The detergent supply pipe 26 is connected to a detergent tank 28 via a detergent opening / closing valve 27 such as an electromagnetic valve. The detergent tank 28 is supplied with a liquid from a charging port 29 provided at the upper wet edge of the bathtub 1. Detergent. The detergent supply pipe 26, the detergent opening / closing valve 27, and the detergent tank 28 constitute a detergent charging means. And this detergent input means,
The return pipe opening / closing valves 20, 21 and the pressure sensor 8 are assembled in a housing 30 and assembled as a cleaning unit 31, and the cleaning unit 31 is installed in a bathroom.

A hot water supply heat exchanger 12 is located next to the reheating heat exchanger 10.
The water supply pipe 13 of the water heater 11 is provided with a flow rate sensor 39 for detecting the flow rate of water passing through the water supply pipe, and a water supply temperature sensor 40 for detecting the temperature of the water supply. On the outlet side of the hot water supply heat exchanger 12, a tapping temperature sensor 41 for detecting tapping temperature is provided. On the reheating side,
Pump 4, reheating heat exchanger 10, water flow sensor 24 and temperature sensor 25, flow sensor 39, supply water temperature sensor 40, hot water supply heat exchanger 12 and tap water temperature sensor 41 on the hot water supply side, reheating and hot water supply side A pouring on / off valve 15 such as a solenoid valve for opening and closing a communication line with the tub 1 is integrated into a housing 42 to form a fully automatic bath pot 43 capable of filling the bathtub 1 and filling the bath. In this embodiment, the automatic bath kettle 43 is installed at a position away from the bathroom.

The automatic drain valve 17, return pipe on / off valves 20, 21, a detergent on / off valve 27, and a pouring on / off valve 15 for opening / closing pipes (valve opening / closing) control, cleaning nozzles 18a, 18b, valve opening / closing, and a pump The control device 44 performs the operation control of 4, and the combustion control (burner combustion control) of the reheating heat exchanger 10 and the hot water supply heat exchanger 12. A remote controller 45 is connected to the control device 44, and the remote controller 45 has a fully automatic button 46 for continuously performing a cleaning operation, a hot water filling operation, and a reheating operation, and a reheating water temperature setting unit 47, A water filling level setting section 48 and a cleaning button 32 for performing only the cleaning operation are provided.

The control device 44, as shown in FIG.
, A determination / instruction unit 51, a timer 52, a calculation unit 53, and a memory 54. The signal input unit 50 includes a signal from the remote controller 45, a water level detection signal from the pressure sensor 8, a water flow detection signal from the water flow sensor 24, a temperature detection signal from each of the temperature sensors 25, 40, 41, and a flow sensor. Upon receiving the flow rate detection signals from 39, these signals are added to the judgment / command unit 51. The determination / command unit 51 receives a signal from the signal input unit 50,
Of the fully automatic operation mode and the cleaning operation mode given to the memory 54, the program information of the mode specified by the buttons 46 and 32 is received, and the progress of the program is grasped. The timer operation is commanded, and the calculation unit 53 is instructed to calculate the amount of water and the like, and various valves 15, 17, 2
Open / close control signals are output to 0, 21, 27 and the washing nozzles 18a, 18b, and the operation of the pump 4 and the control of burner combustion in the heat exchangers 10, 12 for reheating and hot water supply are performed.

The memory 54 incorporates a program for fully automatic operation from bath tub cleaning to reheating of the bath, and a program dedicated to bath tub cleaning, as well as calculation results such as the water amount calculation and input values (for example, set values) inputted from outside. Is stored. The bathtub cleaning operation program in the fully automatic operation program has a simple cleaning control function of a simple cleaning operation so that the operation is completed in a short time. The program has a careful cleaning control function of performing a cleaning operation more carefully in order to remove dirt not removed by the simple cleaning.
More specifically, the careful cleaning control function sets the detergent amount, the cleaning liquid injection time, and the cleaning liquid injection pressure to be all larger than the simple cleaning control function, so that the remaining bathtub inner wall surface is contaminated. It is a careful cleaning control method so that it can be completely dropped.

The present embodiment is configured as described above.
First, an example of the fully automatic operation from the washing of the bathtub to the reheating of the bath will be described based on the flowchart shown in the figure.
First, cover the bathtub 1 with the lid 14, set the temperature of the reheating bath in the reheating water temperature setting unit 47, set the filling water level in the filling water level setting unit 48, and then press the fully automatic button of the remote control 45. When the switch 46 is turned on, the ON signal is applied to the determination / command unit 51 via the signal input unit 50 of the control device 44. The judgment / instruction unit 51 receives the command of the fully automatic operation mode, and starts a simple washing operation by the simple washing control function in steps 101 to 148. In the operation, first, in steps 101 to 105, a preparatory operation for introducing a detergent for opening the inside of the reheating circulation pipe 3 to the atmosphere is performed.

That is, in step 101, a water level detection signal from the pressure sensor 8 is received, and it is determined whether or not there is hot water in the bathtub 1. When the bathtub 1 is empty, open the detergent on-off valve 27,
Move on to the detergent operation. In response, the water level was detected,
When it is determined that there is hot water in the bathtub, the cleaning nozzle
18a and 18b are opened, the return pipe opening / closing valve 21 is opened at the same time, and then the automatic drain valve 17 is opened to start draining hot water from the bathtub 1. With the drainage of the hot water, the water level of the hot water accumulated in the bathtub gradually decreases, and when the water level drops below the injection holes of the cleaning nozzles 18a, 18b, the air pressure from the injection holes of the cleaning nozzles 18a, 18b flows to the pipe side. The hot water that acts and accumulates in the reheating circulation pipe 3 enters the bathtub from the return circulation port of the second return branch pipe 23 as the water level of the bathtub 1 decreases. And
When the water level in the bathtub drops below this return
Except for the first return branch pipe 22, the inside of the reheating circulation pipe 3 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 8 from time to time. And bathtub 1 in step 104
It is determined whether the inside is empty. When the water level is detected by the pressure sensor 8, it is determined that the inside of the bathtub 1 is not empty, and when the detection signal of the pressure sensor 8 detects the reference pressure that the bathtub is empty, the bathtub 1 becomes empty. The automatic drain valve 17 is closed in step 105. Through the operations of steps 101 to 105, the inside of the reheating circulation pipe 3 is opened to the atmosphere, and the detergent easily enters the reheating circulation pipe 3. In this state, the detergent release valve 27 is opened in step 106, and the detergent is supplied from the detergent tank 28 into the reheating line 3 (in this embodiment, into the return pipe 5). At the same time, it is judged whether or not ₁ h predetermined T has elapsed in step 107. That is, the control unit 44 after adding an open signal to the detergent-off valve 27, counts the time by using the timer 52, while the time T ₁ has not elapsed leave open the detergent-off valve 27, T _{When one} hour has passed, it is determined that the minimum necessary amount of detergent (for example, 20 cc) without waste of detergent has been supplied from the detergent tank 28 to the return pipe 5 through the detergent supply pipe 26, and the detergent on / off valve Close 27.

Next, the operation proceeds to the cleaning operation from steps 109 to 148. In step 109, the pouring on / off valve 15 is opened, and burner combustion of the hot water supply heat exchanger 12 is performed. Then, the hot water of S ₁ ° C is dropped into the recirculation pipeline 3. The dropped hot water is supplied to the bathtub 1 from the washing nozzles 18a and 18b through the outgoing pipe 6. On the other hand, the hot water passing through the return pipe 5 is not
Through the return branch pipe 23 into the bathtub. As a result, a cleaning liquid in which hot water and a detergent are mixed accumulates in the bathtub 1. The amount of hot water supplied to the step 110 in the tub determines whether or not becomes a predetermined X _1. That is, the judgment / instruction unit 51 receives a signal from the flow sensor 39,
The accumulated water supply amount is calculated every moment. The calculated water volume is
While not reach X ₁ is leave Maintain an open pouring-off valve 15, closes the pouring-off valve 15 when the operation amount of water reaches X _1. The X ₁ of washing water that is supplied to the bathtub 1, minimum cleaning liquid to operating smoothly the pump 4 to the bottom side of the bathtub 1 (water and a solution of mild detergent) is accumulated.

After the hot water of the X ₁ is supplied, pouring off valve 15 is closed, hot water supply is stopped. Next, the cleaning nozzle 18b and the return pipe opening / closing valve 21 are closed, and the return pipe opening / closing valve 20 is opened. Then, the pump 4 is started. The number of rotations N of the pump 4 per unit time (injection pressure of the cleaning liquid) is set to a minimum value necessary for removing dirt. By the activation of the pump 4, the cleaning liquid accumulated at the bottom of the bathtub 1 is sucked into the pump 4 through the first return branch pipe 22, and the sucked cleaning liquid is reheated from the discharge side of the pump 4 for heat exchange. The cleaning liquid is heated to a temperature suitable for exerting the chemical cleaning ability, in this embodiment, 50 to 60 ° C., and the cleaning liquid heated in the heated water passes through the outward pipe 6. It is injected into the bathtub from the nozzle 18a.

The ejected cleaning liquid flows down to the bottom side of the bathtub 1, and the cleaning liquid flowing down to the bottom side is again sucked into the pump 4 from the first return branch pipe 22, and similarly passes through the reheating heat exchanger 10. It is jetted out of the post-wash nozzle 18a into the bathtub. During the circulation injection of the cleaning liquid, the temperature control of the cleaning liquid is performed in steps 114 to 117.

That is, based on the temperature detection signal obtained from the temperature sensor 25, the control device 44 sets the temperature of the cleaning liquid to S ₂ ° C. (for example, 60 ° C.).
C) is determined in step 114. When the temperature of the cleaning liquid is equal to or lower than S ₂ ° C, the gas burner of the reheater 10 is burned in step 115 to heat the cleaning liquid. Then, in step 116, it is determined again whether 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 burner of the reheating heat exchanger 10 is continuously heated and heated, and the temperature of the cleaning liquid is reduced. Heat exchanger 10 when S ₂ ℃ or more
Stop burner combustion.

Next, in step 118, the pump 4 performs a determination whether or not elapsed minimal T ₂ hours required to remove dirt from being activated. Step 11 if T ₂ hours have not elapsed
Repeats the operation of 4 to 117, the temperature of the washing liquid circulating injection continues to control the temperature of S _2. Time the pump 4 is stopped at step 119 when the elapsed between T _2, closing the cleaning nozzle 18a at step 120, opens the cleaning nozzle 18b. Then, in step 121, the pump 4 is started again. Then, the cleaning liquid circulated from the bathtub 1 via the first return branch pipe 22 passes through the reheating heat exchanger 10 and is jetted into the bathtub from another cleaning nozzle 18b, and the circulation jetting of this cleaning liquid is repeated. It is done. At this time, steps 122 to 1
At 25, the temperature of the cleaning liquid is controlled in the same manner as in the operations of steps 114 to 117, and the cleaning liquid is sprayed into the bathtub 1 while maintaining the temperature of S ₃ ° C (for example, 60 ° C).

Judging from the pump startup whether T ₃ hours minimum necessary to remove the dirt has passed in step 126 in step 121 is performed similarly to the step 118, the pump 4 is stopped when the elapsed T ₃ hours Then, the automatic drain valve 17 is opened. Subsequently, the return pipe opening / closing valve 20 is closed, and the cleaning liquid in the bathtub 1 is drained. Next, the pouring on / off valve 15 is opened, and hot water of S ₄ ° C. (for example, 60 ° C.) is supplied from the side of the hot water supply heat exchanger 12 to the washing nozzle 18 b while washing the inside of the outgoing pipe 6.
The hot water is sprayed onto the inner wall surface of the bathtub from 8b, 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 131 the washing time by the hot water it is determined whether elapsed T ₄ hours, pouring off valve when T ₄ hours have elapsed
15 is closed and the injection of hot water from the cleaning nozzle 18b is stopped. Then, in step 133, the cleaning nozzle 18a is opened and the cleaning nozzle 18a is opened.
Close b. Next, at step 134, the pouring on / off valve 15 is opened, and the hot water on the hot water supply heat exchanger 12 side is supplied to the washing nozzle 18a, and the hot water is similarly jetted from the washing nozzle 18a toward the inner wall surface of the bathtub,
While cleaning the pipeline, remove the cleaning solution from the inside wall of the bathtub. The injection of the hot water from the cleaning nozzle 18a stops injection of hot water to close the pouring-off valve 15 at step 136 when after _five hours T,
In step 137, the cleaning nozzle 18a is closed.

Next, from step 138 to step 142, the second return branch pipe 23
Of the pipe is performed. That is, in step 138, the return pipe on-off valve 21 is opened, and subsequently, the pouring on-off valve 15 is opened. As a result, the hot water from the hot water supply heat exchanger 12 passes through the return pipe 5 and enters the second return branch pipe 23 from the return pipe opening / closing valve 21.
While washing the washing liquid in the second return branch pipe 23, the bathtub 1
It gets inside and is discharged. When the hot water in the second return branch pipe 23 has been flushed for T ₆ hours, the pouring on-off valve 15 is closed,
The hot water washing of the second return branch pipe 23 is stopped, and the return on-off valve 21 is closed. Next, in steps 143 to 147, the hot water in the first return branch pipe 22 is similarly washed. This hot water washing is performed by opening the return pipe opening / closing valve 20 and opening the hot water pouring valve 15 for the hot water from the hot water supply heat exchanger 12 and passing the return pipe 5 through the first return branch pipe 22. After the hot water washing of the first return branch pipe 22 is completed, the automatic drain valve 17 is closed in step 148.

Next, the process proceeds to the filling operation of steps 149 to 152. First, in step 149, the cleaning nozzles 18a and 18b are opened, and at the same time, the return pipe opening / closing valve 21 is opened. Next, in step 150, the pouring on / off valve 15 is opened, and the hot water flowing out of the hot water supply heat exchanger 12 is supplied to the additional heating circulation pipe 3 side, passes through both the return pipe 5 and the forward pipe 6, and the cleaning nozzles 18a, It is dropped into the bathtub 1 from the return circulation port of 18b and the second return branch pipe 23. Then, the water level of the hot water in the hot water is detected by the pressure sensor 8.
In step 151, based on the water level detection signal from the pressure sensor 8, it is determined whether or not the detected water level has reached the water level set by the filling level setting section 48 of the remote controller 45, and when the detected water level has reached the set water level Then, the pouring on / off valve 15 is closed, and the filling operation is stopped.

Next, the reheating operation is performed from step 153 to step 157. First, in step 153, the pump 4 is started, and the hot water in the bathtub 1 is sucked from the second return branch pipe 23 through the return pipe 5 to the pump 4, and the sucked hot water is discharged from the pump 4. The water is discharged from the cleaning nozzles 18a and 18b into the bathtub 1 through the reheating heat exchanger 10 and the forward pipe 6 from the side. After the circulation of the hot water is started, in step 154, the detected temperature of the hot water in the bathtub 1 detected by the temperature sensor 25 and the remote control 45
A comparison is made with the temperature set by the reheating water temperature setting unit 47, and when the detected temperature is lower than the set temperature, burner combustion of the reheating heat exchanger 10 is started to reheat the circulating hot water. During the reheating, the detected temperature is constantly compared with the set temperature, and the reheating is continued until the detected temperature does not reach the set temperature. Then, when the detected temperature reaches the set temperature, the pump 4 is stopped in step 156, and in the case of reheating, the burner combustion of the reheating heat exchanger is further stopped. Next, in step 157, the cleaning nozzles 18a and 18b are closed, the return pipe opening / closing valve 21 is closed, and the reheating operation is completed, and the heat retention operation is performed for a predetermined time.

In the bath tub cleaning operation in the fully automatic operation, since the injection of the cleaning liquid toward the inner wall surface of the bath tub is set to a minimum necessary time, the bath tub cleaning operation ends in a short time,
Along with this, the time from when the fully automatic button 46 is pressed to when the bath is boiled is shortened, and the bather can enter the cleanly cleaned bath without having to wait a long time after pressing the fully automatic button 46. In addition, although this fully automatic operation is performed frequently as on a daily basis, the amount of cleaning used in this fully automatic operation is set to a necessary minimum, so that there is no waste of detergent and it is very economical. . Furthermore, in the bath tub cleaning in this fully automatic operation, the injection pressure of the cleaning liquid, that is, the number of revolutions per unit time of the pump is set to a minimum so as to be a minimum, and the collision of the cleaning liquid with the inner wall surface of the bath tub is performed. Sound can be reduced to prevent generation of noise.

When the dirt that has not been completely removed by the bath tub cleaning in the fully automatic operation comes to the fore, the cleaning button 32 is turned on to perform a more careful bath tub cleaning operation. The cleaning operation dedicated to the bathtub is performed by the operation from step 100a to step 148 in FIG. That is, when the cleaning button 32 is turned on, the control device 44 performs the elaborate bathtub cleaning operation by the operation based on the careful cleaning control function. First, the ON signal of the cleaning button 32 is applied to the determination / command unit 51 via the signal input unit 50, so that the determination / command unit 51 determines that the driving operation is performed by the careful control function. the time T ₁ for opening the detergent-off valve 27 of 107 is changed to a long T ₁ 'than that. Due to the change in the valve opening time, a large amount of detergent is supplied into the reheating circulation line (washing liquid circulation line). As a result, the concentration of the detergent contained in the cleaning liquid is increased, so that dirt is easily removed, and dirt remaining after washing in the fully automatic operation can be removed neatly. After changing the valve opening time of the detergent on-off valve 27 in step 100a, in step 100b, step 118 and step 1 are performed.
The operating time of the pump 4 at 26 is longer T ₂ 'and
It is changed to T ₃ ′, and the rotation speed N of the pump 4 per unit time is changed to a larger value N ′. By lengthening the operation time of the pump 4, the spraying time of the cleaning liquid sprayed from the cleaning nozzles 18a and 18b onto the inner wall surface of the bathtub becomes sufficiently long, and the dirt on the inner wall surface of the bathtub is easily removed. Further, by increasing the number of revolutions per unit time of the pump 4, the injection pressure of the cleaning liquid injected from the cleaning nozzles 18a and 18b increases, and accordingly, the collision force of the cleaning liquid against the inner wall surface of the bathtub becomes strong. Similarly, dirt on the inner wall surface of the bathtub is easily removed.
After changing the washing conditions in steps 100a and 100b,
The washing operation in steps 101 to 148 is performed in the same manner as the operation of the bathtub washing operation in the fully automatic operation, and the careful washing operation by the washing button 32 ends at the same time when the operation in step 148 is completed.

The bathtub cleaning operation using the cleaning button 32 is performed with a long cleaning liquid injection time, a large amount of detergent, and a high cleaning liquid injection pressure. It is possible to clean the dirt that has not been removed by the washing operation.

Note that the present invention is not limited to the above embodiment,
Various embodiments may be employed. For example, in the above-described embodiment, in the cleaning operation dedicated to the bathtub by the cleaning button 32, the detergent amount, the cleaning liquid injection time, and the cleaning liquid injection pressure are both changed to increase, but these detergent amounts, the injection time, and the injection pressure are changed. One or two of them may be changed.

Further, in the above embodiment, the heating temperature of the cleaning liquid is not changed between the cleaning operation in the fully automatic operation and the cleaning operation using the cleaning button, and is set to the same temperature (for example, 60 ° C.) where the dirt is most easily removed. However, when the bathtub is washed by the fully automatic operation, the heating temperature is set to be slightly lower, and when the lid 14 of the bathtub 1 is accidentally opened by the infant or the like during the washing operation, the high-temperature washing solution sprinkles on the infant or the like. The driving may be performed with higher safety so as not to cause burns.

Further, in the above embodiment, the detergent amount, the cleaning liquid injection time, and the change values of the cleaning liquid injection pressure that are changed when the cleaning button 32 is turned on are fixedly set. For example, as shown in FIG. A detergent amount setting unit 33 for manually setting the detergent amount and an injection time setting unit 34 for manually setting the operation time of the cleaning liquid, that is, the operation time of the pump 4, are provided in 45. The time setting unit 34 may be operated to arbitrarily change the amount of the detergent and the injection time of the cleaning liquid.

Further, the system of the cleaning apparatus according to the present invention is not limited to the one shown in FIG. 1, but can adopt various system configurations. For example, in the above-described embodiment, the return side of the return pipe 5 is provided with return pipe opening / closing valves 20 and 21 to branch into a first return branch pipe 22 and a second return branch pipe 23. Instead, the return pipe 5 may be directly connected to the bottom side of the bathtub 1. Further, in the above embodiment, the bath tub cleaning device has a system configuration in which the bath tub cleaning device is incorporated in a fully automatic bath kettle, and the reheating heat exchanger 10 also serves as a reheating water heater and a cleaning liquid heater, The cleaning system can be configured as a separate system from the bath kettle. Further, in the above embodiment, the reheating heat exchanger 10 and the hot water supply heat exchanger 12 are configured by gas-fired heaters,
This heater can also be configured using an electric heater or an oil-fired heater.

〔The invention's effect〕

According to the present invention, when the bathtub is washed in the fully automatic operation mode, the amount of the detergent, the injection time of the cleaning liquid, and the injection pressure of the cleaning liquid are made small (small) to perform a simple cleaning operation. The time from when the on operation is performed to when the bath is boiled is shortened, and the bather can cleanly wash the bath without having to wait a long time after pressing the fully automatic button, and can comfortably take a bath. Also, because the amount of detergent is small, it is very economical without wasteful consumption of detergent even if frequent washing is performed on a daily basis. The noise caused by the collision noise can be suppressed, and fully automatic operation from bath tub cleaning to reheating can be performed in a quiet state.

And, when the dirt that could not be removed by the simple bath tub cleaning operation came to be noticed, the cleaning button was turned on to perform a more careful dedicated cleaning operation, so that the inner wall surface of the bath tub was cleaned. This makes it possible to cleanly remove dirt without having to obtain it, and the bathtub can always be kept in a clean state with no dirt, which is very convenient.

[Brief description of the drawings]

FIG. 1 is a system diagram of an embodiment of a bathtub cleaning apparatus according to the present invention, FIG. 2 is a main part configuration diagram showing an example of a control device constituting the embodiment, and FIG. FIG. 4 is a flowchart showing another embodiment in which the remote controller is provided with a manual changing means for changing the amount of detergent and the injection time of the cleaning liquid. 1 ... bathtub, 3 ... reheating circuit, 4 ... pump,
5 ... Return pipe, 6 ... Outgoing pipe, 6a, 6b ... Branch outgoing pipe, 8 ...
... pressure sensor, 10 ... reheating heat exchanger, 11 ... hot water supply, 12 ... hot water supply heat exchanger, 13 ... water supply pipe, 14 ... lid, 16
... drain pipe, 17 ... automatic drain valve, 18a, 18b ... washing nozzle, 20, 21 ... return pipe on-off valve, 22 ... first return branch pipe, 23 ... second return branch pipe, 24 …… water flow sensor, 25…
... temperature sensor, 26 ... detergent supply pipe, 27 ... detergent on-off valve,
28 …… detergent tank, 29 …… inlet, 30 …… housing, 31 ……
Cleaning unit, 32: Cleaning button, 33: Detergent amount setting unit, 34: Spray time setting unit, 39: Flow rate sensor, 40:
Water supply temperature sensor, 41 ... Hot water temperature sensor, 42 ... Housing,
43 ... fully automatic bath kettle, 44 ... control device, 45 ... remote control, 46 ... fully automatic button, 47 ...
48 ... water filling level setting unit, 50 ... signal input unit, 51 ... judgment / instruction unit, 52 ... timer, 53 ... arithmetic unit, 54 ... memory.

Claims (3)

(57) [Claims] 1. A bathtub washing device provided with a bathtub capable of filling a bathtub with water or hot water and reheating.
This bathtub cleaning device includes a detergent charging means, a cleaning nozzle for injecting a charged detergent with a pump onto the inner wall surface of the bathtub, and a bathtub cleaning operation, a water filling or hot water filling operation, and a reheating operation in accordance with a given program. A control device for performing control,
A remote control connected to this control device is provided.The remote control includes a fully automatic button for performing a full automatic operation from washing operation through water filling or hot water filling to reheating, and a cleaning button for performing only cleaning operation. The control device is provided with a means of a simple cleaning control function for performing a simple cleaning operation in response to a command of the fully automatic button, and the amount of detergent and injection from the cleaning nozzle are controlled by the command of the cleaning button. A bath tub cleaning device having a means of a careful cleaning control function for performing more careful cleaning by changing at least one of time and injection pressure of a cleaning nozzle in a direction to increase. 2. A bath tub washing device provided with a bath kettle capable of filling a bath tub with water or hot water and reheating.
This bathtub cleaning device is equipped with a cleaning nozzle that sprays a detergent-containing cleaning solution onto the inner wall surface of the bathtub, and a pump built-in that collects the cleaning solution injected from the cleaning nozzle into the bathtub from the bottom side of the bathtub and circulates the cleaning solution to the cleaning nozzle. A cleaning liquid circulation pipe, a detergent charging means for charging the cleaning liquid into the circulation path of the cleaning liquid, a heating means for the cleaning liquid to be circulated and sprayed, and a bathtub cleaning operation, a water filling or hot water filling operation and a reheating operation in accordance with a given program. A control device for performing control; and a remote controller connected to the control device. The remote control includes a fully automatic button for performing a fully automatic operation from washing operation to filling with water or hot water and reheating, and a washing operation. A cleaning button for performing only a simple cleaning control function for performing a simple cleaning operation in accordance with a command of the fully automatic button; Means of a careful cleaning control function for changing the direction of increasing at least one of the detergent amount, the cleaning liquid injection time and the cleaning liquid injection pressure to perform more careful cleaning than the simple cleaning control function according to the instruction of the cleaning button. And a bath tub cleaning device. 3. A remote control, comprising: a detergent amount setting unit capable of changing the amount of the detergent to be supplied by the detergent input means in a direction of increasing the amount of the detergent during the cleaning operation by the cleaning button; The bathtub cleaning apparatus according to claim 1, wherein at least one of the bathtub is provided.