JP3207467B2 - Detergent charging device for bathtub cleaning, detergent charging method using the device, and detergent charging state detecting method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent feeding device for feeding a detergent into a predetermined feeding portion when washing a bathtub, a detergent feeding method using the device, and a method of detecting a detergent feeding state.

[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. In this apparatus, a washing nozzle for spraying a washing liquid containing a detergent and a water spray nozzle for spraying water such as tap water are provided on a lid of a bathtub. When the bathtub is washed, the washing liquid is pumped from the detergent tank by a 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.

[0003]

However, in this conventional apparatus, the cleaning liquid injected from the cleaning nozzle is not used repeatedly, but flows out of the drain hole together with the water to be injected next. There was no waste on.

[0004] The applicant of the present invention has succeeded in developing a cleaning apparatus capable of solving these problems through repeated trial production research. This development device arranges a cleaning nozzle toward the inner wall surface of the bathtub, collects the cleaning liquid injected from the cleaning nozzle from the bottom side of the bathtub, and collects the cleaning liquid with a circulation pump of a reheating circulation pipe line connected to the bathtub. It is configured to circulate and supply to the washing nozzle via the washing liquid circulation pipe passing through the reheating heat exchanger, and further provided in this washing liquid circulation pipe is a detergent supply device incorporating a detergent tank and an on-off valve for introducing the detergent. It is a thing. According to this development device, at the start of cleaning, with the bath tub empty, the on-off valve for detergent introduction is opened, detergent is introduced from the detergent tank into the washing solution circulation line, and the washing solution circulation line is Water is sent to the bathtub together with the detergent through the tank, and a predetermined amount of the cleaning liquid (mixture of water and detergent) is stored in the bottom of the bathtub. Then, the circulation pump is started, and the cleaning liquid stored in the bathtub is heated by the heat exchanger. While supplying to the washing nozzle,
The heated cleaning liquid is circulated and injected from the cleaning nozzle toward the inner wall surface of the bathtub.

However, when the detergent is introduced from the detergent tank into the washing liquid circulation line, when the detergent introduction operation is performed by opening the detergent introduction opening / closing valve, the detergent is normally introduced or the detergent runs out. There is a disadvantage that it is not possible to automatically detect the state such as whether or not the user is touching. For this reason, there is a problem that the tub washing operation is performed without the detergent without noticing that the detergent has run out,
When performing the cleaning operation for the first time after installing and constructing the equipment,
The pipe line from the detergent tank to the detergent inlet is filled with air. There is a problem that the cleaning operation is performed with a cleaning liquid containing only water that does not reach and does not contain a detergent.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a bathtub-cleaning detergent capable of always accurately detecting a detergent-injection operation state and performing bathtub cleaning in a normal state. An object of the present invention is to provide a dispensing device, a detergent dispensing method using the device, and a method for detecting a detergent dispensing operation state.

[0007]

The present invention is configured as follows to achieve the above object. That is, the inventions of the detergent dosing device tub washing, the detergent apparatus installed in a bath cleaning apparatus bath cleaning is performed using the entered into the detergent introduction part detergent, the detergent tank containing a detergent liquid A detergent introduction means for introducing a detergent guided from the detergent tank via a conduit into a detergent introduction portion, and a detergent introduction device disposed in a conduit from the detergent tank to the detergent introduction portion to detect the presence or absence of a detergent and the flow of the detergent. A detergent flow sensor, and means for determining that the detergent has run out when no detergent is detected by the detergent flow sensor and displaying the detergent run out on a display unit of a remote control of the control device of the bathtub cleaning device. It is configured. Further, in the detergent charging method of the present invention, the detergent charging section of the bathtub cleaning device in which bathtub cleaning is performed using the detergent charged in the detergent charging section, via a conduit from a detergent tank containing a liquid detergent. In the detergent introduction method of introducing the introduced detergent by the detergent introduction means,
A detergent flow sensor that detects the presence or absence of detergent and the flow of detergent is installed in the conduit from the detergent tank to the detergent inlet,
At the time of the introduction of the detergent, the detection signal of the detergent flow sensor confirms the presence of the detergent in the pipeline, and is configured to perform the operation of introducing the detergent, further, the detergent input state detection method of the present invention is The detergent introduced into the bath tub cleaning device in which bath tub cleaning is performed using the detergent introduced into the detergent introduction unit, the detergent introduced from the detergent tank containing the liquid detergent via a pipe line by the detergent introduction means. In the detergent dosing method of dosing into the detergent dosing section, a detergent flow sensor is provided in the conduit from the detergent tank to the detergent dosing section to detect the presence or absence of the detergent and the flow of the detergent, and information on the operating state of the detergent dosing means and the detergent The detection signal of the flow sensor is taken in, and when the detection signal of no detergent is output from the detergent flow sensor in the detergent input stop operation state of the detergent input means, the detergent is exhausted and the detergent is injected. When a detergent flow detection signal is output from the detergent flow sensor in the detergent input operation state of the means, it is discriminated and determined that the detergent is in a normal input state, and when the detergent is running out, the replenishment of the detergent is reported. Is configured as

[0008]

In the present invention having the above construction, when the detergent is introduced into the detergent introduction section, the detergent flow sensor confirms that the detergent is present in the pipeline, and when the detergent introduction means is operated, the detergent introduction section moves from the detergent tank to the detergent introduction section. The detergent flow sensor detects the flow of the detergent and outputs a detection signal.

On the other hand, the detergent flow sensor confirms that there is no detergent in the pipeline, and the detergent flow sensor detects the flow of the detergent despite the fact that the detergent introducing means is being charged. If not, it is determined that the detergent has run out, and notification of detergent replenishment is performed.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows a configuration of a main part of a detergent input device for bathtub cleaning according to the present invention, and FIG. 1 shows a system configuration of a bathtub cleaning device provided with this device. This bathtub cleaning system has a configuration in which a cleaning function is added to a fully automatic bathtub, and cleaning nozzles 2 a and 2 b are provided on the opposite wall surface of the bathtub 1. From the bottom side of the bathtub 1, the return nozzle 3, the return pipe 5, the circulation pump 6, the reheating heat exchanger 7, the outgoing pipe 8, the outgoing branch pipes 10 and 11, and the washing nozzle 2 are sequentially passed.
The pipelines leading to a and 2b constitute a cleaning fluid circulation pipeline, and
The return branch pipe 4, return pipe 5, circulating pump 6, reheating heat exchanger 7, outgoing pipe 8 and the pipes leading to the cleaning nozzles 2a and 2b via the outgoing side branch pipes 10 and 11 constitute a reheating recirculation pipe. are doing. The reheating circulation line is connected to a hot water supply pipe 14 of a water heater 13 via a hot water supply valve 12 such as an electromagnetic valve, thereby constituting a fully automatic bath kettle having a washing function.

The outgoing pipe 8 is connected to a detergent feeding device which is characteristic in this embodiment. As shown in FIG. 2, the detergent introduction device includes a detergent tank 17 and a detergent flow sensor 41.
And a detergent injection valve such as a solenoid valve functioning as a detergent injection means.
42. The detergent flow sensor 41 is a sliding case connected to the outlet side of the detergent tank 17 in an upright state.
43, a float 44 slidably housed vertically in the sliding case 43, and a magnet 45 provided on the float 44.
And a reed switch 46 facing the magnet 45 at the lower sliding limit of the float 44 provided on the outer peripheral wall of the sliding case 43.
And is constituted by. Float 44 is sliding case 43
When the pipe is not filled with the detergent, FIG.
As shown in FIG. 5, the reed switch 46 outputs an ON signal in opposition to the magnet 45 at the sliding lower limit position due to its own weight. When the inside of the sliding case 43 is filled with the detergent, ( As shown in b), the float 44 is at the upper limit position A due to the buoyancy.
46 is configured to output an off signal by moving away from the magnet 45.

In the present embodiment, the gap 47 between the inner peripheral surface of the sliding case 43 and the outer peripheral surface of the float 44 is reduced so that when the detergent flows from the detergent tank 17 to the detergent input valve 42, the gap is reduced. When the detergent passes through 47, the float 44 is drawn in the direction in which the detergent flows by viscous resistance to position the float 44 at the lower sliding limit position as shown in FIG. 3C, and an ON signal is output from the reed switch 46. It is configured to be. A discharge pipe 48 is connected to the discharge side of the detergent input valve 42, and a tip end of the discharge pipe 48 is connected to the outward pipe 8 as a detergent input section.

An outlet side of a detergent injection pipe 66 is connected to the detergent tank 17, and an inlet side of the detergent injection pipe 66 is connected to a detergent injection port 38 provided at a wetted upper edge of the bathtub 1. A liquid detergent can be injected into the detergent tank 17 from the inlet 38.

In FIG. 1, 9 is a pressure sensor for detecting the water level in the bathtub 1, 18 is a drain pipe connected to the bottom of the bathtub 1,
19 is a drain valve, 20 and 21 are return pipe on / off valves, 22 and 23 are nozzle on / off valves, 24 is a water flow sensor, 25 is a flow rate sensor, 26, 27, and 28 are temperature sensors that detect the temperature of liquid in the pipe, 30 Indicates a water supply pipe. Pressure sensor 9 and return pipe opening / closing valve
20 and 21 and the detergent charging device are compactly integrated as a cleaning unit 37, and are installed, for example, below the upper edge wet edge of the bathtub 1.

The drain valve 19, return pipe opening / closing valves 20, 21;
Pipe line opening / closing (valve opening / closing) control of the nozzle opening / closing valves 22 and 23, the pouring valve 12, and the detergent injection valve 42, the operation control of the circulation pump 6, and the combustion of the reheating heat exchanger 7 and the water heater 13 The control (burner combustion control) is performed by the control device 31. A remote controller 32 is connected to the controller 31. The remote controller 32 has a fully automatic button 33 for continuously performing a cleaning operation, a hot water filling operation, and a reheating operation, and a reheating water temperature setting unit.
35, a filling level setting unit 36, and a detergent supply display unit 34 for notifying the supply of the detergent are provided.

As shown in FIG. 4, the control unit 31 includes a signal input unit 70, a command / control unit 71, a timer 72, and a calculation unit 73.
And a memory 74. The signal input unit 70 receives a signal from the remote controller 32, a water level detection signal from the pressure sensor 9, a water flow detection signal from the water flow sensor 24, and a temperature sensor.
It receives the temperature detection signals from 26, 27, and 28, the flow rate detection signal from the flow rate sensor 25, and the detection signal from the detergent flow sensor 41, and applies these signals to the command / control unit 71. Command·
The control unit 71 stores a signal from the signal input unit 70 and a memory 74
Receiving the program information from bath tub cleaning to hot water filling and reheating by giving the progress status of the program from bath tub cleaning operation to reheating operation, and instructs the timer 72 to operate the timer if necessary. The arithmetic unit 73 is instructed to calculate the amount of water and the like, and various valves 12, 19, 20, 21, 22, 22,
An open / close control signal is output to 23 and 42, and the operation of the circulation pump 6 and the control of burner combustion in each of the heat exchangers for reheating and hot water supply are performed.

On the other hand, the command / control unit 71 obtains the information on the detergent flow detected by the detergent flow sensor 41 and the operation information on the detergent injection valve 42, and determines the operation state of the detergent injection device, that is, the state of running out of the detergent. A normal operation state of detergent input is discriminated and determined, and a detergent input amount is controlled. That is, a state in which the detergent supply valve 42 is closed (a state in which the detergent supply is stopped).
At this time, when the reed switch 46 outputs the ON signal, it is determined that the sliding case 43 is out of the detergent in which the detergent is not filled. Also, when the reed switch 46 outputs an off signal with the detergent input valve 42 closed,
The float 45 receives the buoyancy of the detergent in the sliding case 43 and is at the sliding upper limit position, and determines that the inside of the sliding case 43 is filled with the detergent. Then, when the operation of introducing the detergent is performed, it is performed after confirming that the sliding case 43 is filled with the detergent.

When the detergent supply valve 42 is opened while the sliding case 43 is filled with the detergent, and when the reed switch 46 outputs an ON signal, the flow of the detergent moves the float 44 to the lower sliding limit position. It is determined that it is in the drawn state, that is, the state in which the detergent is normally supplied.
On the other hand, when the off signal is output from the reed switch 46 despite the fact that the detergent supply valve 42 is opened, the detergent supply valve 42 breaks down and is determined to be in an error state. Further, when it is determined that the detergent has run out, the detergent replenishment display section 34 of the remote controller 32 displays a detergent replenishment display.

The memory 74 incorporates a program for fully automatic operation from bathtub cleaning to reheating of the bath and an operation program for the detergent dispensing device, as well as calculation results such as water volume calculation and input values input from outside (for example, (Setting value).

This embodiment is configured as described above.
Next, the operation of the detergent dispenser will be described based on the flowcharts shown in FIGS. 5 and 6 during a series of fully automatic operations from washing the bathtub to reheating the bath. First, bathtub 1
The lid (not shown) is set on the remote controller 32, and the hot water temperature setting section 35 of the remote controller 32 sets the hot water temperature for reheating, and the hot water level setting section 36 sets the hot water level. Button 33
Is turned on, this on signal is applied to the signal input
It is added to the command / control unit 71 via 70. Command / control unit 71
Receives the command of the fully automatic operation mode, and
Preparing operation for detergent introduction to drain the remaining hot water in the bathtub 1 and open the inside of the recirculating circulation pipe to the atmosphere is performed until 5.

That is, the command / control unit 71 is provided with the pressure sensor 9
When the water level is detected, it is determined that there is hot water in the bathtub 1 and the nozzle opening / closing valves 22 and 23
After opening the return pipe opening / closing valve 21, the drain valve 19 is opened to drain the bathtub hot water. When the water level is no longer detected by the signal from the pressure sensor 9, it is determined that the bathtub 1 is empty, and the drain valve 19 is closed.

Next, the detergent input operation in steps 106 to 117 is performed. First, as shown in FIG.
At 106, it is determined whether or not the ON signal is output from the detergent flow sensor 41. When the ON signal is output, it is determined that the float 44 is at the sliding lower limit position due to its own weight and the sliding case 43 is not filled with the detergent. Then, it is determined whether the detergent is completely empty in steps 107 to 109, or whether the detergent is contained in the detergent tank 17 but air is accumulated in the sliding case 43 and the detergent does not enter. Make a decision. That is,
Open the detergent valve 42 only T _a seconds close the detergent valve 42 from in step 107. Then, when the detergent is filled in the detergent tank 17, the detergent enters the sliding case 43. Then, by closing the detergent input valve 42, the float 44 rises by buoyancy and is turned off from the reed switch 46. A signal is output, and it is determined that the detergent has not run out by outputting the off signal.
Move on to detergent input operation after 1.

On the other hand, when the ON signal is continuously output from the detergent flow sensor 41 in step 109,
It is determined that the detergent tank 17 and the sliding case 43 are completely empty.
Indicate on 34 that the detergent should be added. The detergent replenishment display may be displayed by a message such as a character, or may be displayed by lighting or blinking of a lap or by a sound such as a buzzer.

When an off signal is output from the detergent flow sensor 41 in step 109, that is, when the detergent is not exhausted, a predetermined amount of detergent is supplied based on the output of the off signal. First, step 111
In detergent valve 42 is opened T _b seconds, the amount of detergent corresponding to the T _b seconds is entered into往管8 is a detergent dispenser,
At this time, it is determined in step 112 whether the detergent has been normally introduced. That is, when the off signal is output from the detergent flow sensor 41, it is determined that the float 44 is at the sliding upper limit position due to the buoyancy of the detergent, and that the flow of the detergent has not occurred, and the float 44 is also opened by the opening operation of the detergent input valve 42. It is determined that the detergent is not flowing, that is, the detergent input valve is in a failure state, and a failure display of the detergent input valve 42 is displayed on an appropriate display unit such as the remote controller 32 as necessary.

On the other hand, when an ON signal is output from the detergent flow sensor 41 in step 112, the detergent input valve 42
As a result, the detergent flows from the detergent tank 17 side to the detergent input valve 42 side, and the flow of the detergent causes the float 44 to flow.
There state where the sliding lower limit position is attracted in the direction of its flow, i.e. it is determined that the introduction of the detergent is normally performed, closing the detergent valve 42 after detergent of T _b seconds in step 113. Then, in step 114, the detergent flow sensor
It is determined whether or not the off signal has been output from 41, and it is confirmed again whether or not the detergent has run out. Detergent flow sensor
When the ON signal is output from 41, the float 44 moves to the sliding lower limit position due to its own weight, judges that the detergent is out, and displays the detergent replenishment display at step 115 as in the case of step 110. When the off signal is output from the detergent flow sensor 41, it is determined that the inside of the sliding case 43 is filled with the detergent and that the detergent has not run out.
In step 6, it is determined whether the opening / closing operation of the detergent supply valve 42 has been performed N times (N is an integer of 1 or more). If the opening / closing operation of the detergent supply valve does not reach N times, the detergent is supplied in steps 111 to 116. The operation is repeated, and when the opening / closing operation of the detergent introduction valve 42 reaches N times, a predetermined amount of detergent (detergent introduction valve 1
It is determined that 30 cc of the detergent has been introduced into the forward pipe 8 side, for example, and the detergent introduction operation is terminated.

Next, the operation proceeds to the cleaning operation in steps 118 to 157. In this cleaning operation, first, step 118
From 120 to 120, an operation of storing a minimum amount of cleaning liquid necessary for normally operating the circulation pump 6 on the bottom side of the bathtub 1 is performed. That is, the pouring valve 12 is opened to replenish hot water on the side of the water heater 13 and to supply the hot water into the circulation pipe, and the hot water is supplied to the cleaning nozzles 2a and 2a.
b and drop it into the bathtub 1 from the return branch pipe 4 side. As a result, a cleaning liquid in which a detergent and hot water are mixed is stored on the bottom surface side of the bathtub 1. The amount of hot water dropped into the bathtub 1 from the water heater 13 is determined by the cumulative calculation of the detected flow rate obtained from the flow sensor 25. When the cumulative calculation value reaches a predetermined X ₁ liter, the minimum required amount of cleaning liquid Is determined to be stored in the bathtub 1 and the pouring valve 12 is closed.

Next, in steps 121 to 128, the bath tub is cleaned by the cleaning nozzle 2a. This behavior is
This is performed by closing the nozzle on-off valve 23, closing the return pipe on-off valve 21 and opening 20 and activating the circulation pump 6. By this pump activation, the cleaning liquid on the bottom side of the bathtub is injected from the return branch pipe 3 through the circulation pump 6, the reheating heat exchanger 7, the forward pipe 8 and the forward branch pipe 10 from the cleaning nozzle 2 a toward the inner wall surface of the bathtub. You. At the time of the circulation injection of the cleaning liquid, the cleaning liquid passing through the cleaning liquid circulation line has an optimum temperature (50 ° C. to 50 ° C. in the present embodiment) for exhibiting the chemical cleaning ability of the detergent in the reheating heat exchanger 7.
The heating is controlled in steps 123 to 126 to a temperature set within a range of 60 ° C., for example, a hot water-like cleaning liquid heated and controlled to 60 ° C. is circulated and sprayed from the cleaning nozzle 2a to the inner wall surface of the bathtub, and the stain on the inner wall surface of the bathtub is removed Cleanly dropped. After the cleaning liquid jetting of the cleaning nozzle 2a is performed a predetermined time (T ₂ hours),
Next, in steps 129 to 136, the cleaning liquid is similarly sprayed from the cleaning nozzle 2b. This cleaning nozzle 2b
Cleaning solution spray from the circulating pump 6 when a predetermined period of time (T ₃ hours) has elapsed is stopped, the cleaning liquid soiled accumulated in the bathtub bottom side is drained drainage valve 19 is opened at step 137.

Next, in steps 138 to 141, the inside wall of the bathtub is washed with hot water by the washing nozzle 2b. In this hot water washing, the return pipe opening / closing valve 20 is closed and the pouring valve 12 is opened to guide the hot water from the water heater 13 to the washing nozzle 2b while washing the inside of the pipe from the outgoing pipe 8 side. This is done by injecting. The cleaning liquid adhering to the inner wall surface of the bathtub and the dirt components dropped by the cleaning liquid are washed away by the hot water injection and discharged from the drain pipe 18. After the hot water is injected from the cleaning nozzle 2b for a predetermined time,
From 142 to 145, the hot water from the water heater 13 is supplied to the washing nozzle 2a from the outgoing pipe 8, and the washing nozzle 2a also cleans the bathtub inner wall. After the cleaning nozzle 2a cleans the inner wall of the bathtub with hot water,
From 146 to 151, the return branch pipe 4 is washed with hot water. This hot water washing is performed by dropping hot water from the water heater 13 from the return pipe 5 through the return branch pipe 4 into the bathtub and draining it from the drain pipe 18. After the hot water washing of the return branch pipe 4 has been performed for a predetermined time, the hot water of the water heater 13 is passed through the return branch pipe 3 so that the hot water cleaning of the return branch pipe 3 is similarly performed from steps 152 to 156. . After the hot water washing of the return branch pipe 3 is completed, the drain valve 19 is closed in step 157, and the bathtub washing operation is completed.

Next, the filling operation of steps 158 to 161 is performed, and subsequently the reheating operation is performed from step 162 to 166.

According to this embodiment, when the detergent is introduced into the washing liquid circulation line by the detergent introduction device, the operation of the detergent introduction valve 42 and the signal of the detergent flow sensor 41 determine whether or not the detergent has run out. It is possible to accurately know whether or not the detergent has been properly supplied and whether or not the detergent supply valve is in a failure state.If the detergent is running out, the detergent can be replenished with the detergent replenishment display. No bath tub cleaning is performed. Further, when a failure of the detergent introduction valve 42 is detected, the repair can be immediately performed, and the detergent introduction device can always be kept in a normal state.

Further, the amount of the detergent to be supplied is confirmed by confirming that the sliding case 43 is filled with the detergent, that is, when the detergent flow sensor 41 outputs the OFF signal with the detergent supply valve 42 closed. Since it is supplied as a reference, there is no variation in the amount of detergent every time the bath tub is washed, and it is possible to always control the supply of an appropriate amount of detergent.

The present invention is not limited to the above-described embodiment, but can take various embodiments. For example, the above embodiment has a configuration in which a bathtub cleaning device is added to a fully automatic bath kettle, but the water heater 13 is omitted in the system shown in FIG. The passage may be configured, and may take the form of various cleaning systems.

In the above embodiment, the detergent supply display unit 34 is provided on the remote controller 32 of the control device 31. However, the detergent supply display unit 34 may be provided on another location such as a panel surface of the control device 31. .

Further, in this embodiment, the detergent introduction means is constituted by the detergent introduction valve 42, but this may be constituted by other means, for example, a piston drive pump. In this case,
A check valve is provided on each of the inlet side and the outlet side of the piston drive pump.

Further, in the above embodiment, the detergent is supplied to the forward pipe 8, but the detergent is supplied to the return pipe 5, the bathtub 1, or any other position on the circulation path or the passage of the cleaning liquid including the bathtub 1. be able to.

[0036]

According to the present invention, a detergent flow sensor for detecting the presence or absence of detergent and the flow of detergent is provided in a path from the detergent tank to the detergent introduction portion. Based on the operation state of the means, it is possible to identify and determine the state of running out of detergent, the normal operation state of detergent introduction, and the failure state of the detergent introduction means, and in the case of running out of detergent, the user is notified by notification of detergent replenishment. Can be replenished according to the above formula, and the bathtub cleaning operation can always be performed in a normal state without progress of the bathtub cleaning with the detergent running out.

When the detergent is supplied by operating the detergent supplying means, a predetermined amount of the detergent can be supplied based on when the detergent flow sensor detects the presence of the detergent in the pipeline. In addition, the amount of the detergent to be supplied becomes accurate, the concentration of the detergent in the cleaning liquid can be regulated to an appropriate constant concentration, and the waste of the detergent can be eliminated, and the dirt in the bathtub can be cleanly removed without variation every time.

[Brief description of the drawings]

FIG. 1 is a bath system diagram showing an embodiment of a detergent charging device for bathtub cleaning according to the present invention in a state of connection with an automatic bath kettle.

FIG. 2 is a schematic configuration diagram of one embodiment of a detergent injection device for bathtub cleaning according to the present invention.

FIG. 3 is an explanatory diagram of an operation of a detergent flow sensor constituting the detergent introduction device in the present embodiment.

FIG. 4 is a main part block diagram illustrating a configuration example of a control device that controls the device of the present embodiment.

FIG. 5 is a flowchart showing the operation of the detergent dosing apparatus of the present embodiment together with a series of fully automatic operation from bathtub cleaning to reheating.

FIG. 6 is a flowchart showing a detergent charging operation portion extracted from the flowchart of FIG. 5;

[Explanation of symbols]

 1 Bathtub 17 Detergent tank 31 Controller 41 Detergent flow sensor 42 Detergent input valve 43 Sliding case 44 Float 45 Magnet 46 Reed switch 47 Clearance

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) A47L 25 / 00,15 / 46 A47K 3/00 D06F 39/02

Claims (3)

(57) [Claims] 1. A detergent charging device provided in a bathtub cleaning device in which a bathtub is cleaned by using a detergent charged into a detergent charging portion. A detergent introduction means for introducing a detergent guided through the detergent introduction section, a detergent flow sensor disposed in a conduit from the detergent tank to the detergent introduction section to detect the presence or absence of a detergent and a flow of the detergent, and the detergent flow sensor Means for judging that the detergent has run out when the absence of detergent is detected, and displaying the run-out of the detergent on a display unit of a remote controller of the control device of the bathtub cleaning apparatus. 2. Detergent introduced through a conduit from a detergent tank containing a liquid detergent to the detergent input part of the bathtub cleaning device in which bathtub cleaning is performed using the detergent input to the detergent input part. In the method of introducing detergent by the detergent introducing means, a detergent flow sensor for detecting the presence or absence of a detergent and a flow of the detergent is provided in a conduit from the detergent tank to the detergent introducing portion, and a detection signal of the detergent flow sensor is provided when the detergent is supplied. A method for introducing a detergent, comprising: confirming that a detergent is present in a pipe line and performing an operation of introducing the detergent. 3. A detergent introduced in a bath from a detergent tank containing a liquid detergent to the detergent introducing portion of the bathtub cleaning device in which bathtub cleaning is performed using the detergent introduced into the detergent introducing portion. In the detergent dosing system in which the detergent is introduced into the detergent introducing section by the detergent introducing means, a detergent flow sensor for detecting the presence or absence of the detergent and a flow of the detergent is provided in a conduit from the detergent tank to the detergent introducing section, and an operation state of the detergent introducing means. Information and the detection signal of the detergent flow sensor, and when the detection signal indicating that there is no detergent is output from the detergent flow sensor while the detergent injection means is in the detergent stopping operation state, the detergent is running out, the detergent is supplied by the detergent injection means. When a detergent flow detection signal is output from the detergent flow sensor in the operating state, it is determined that the detergent is in the normal state, and when the detergent is out, the detergent is replenished. A detergent detection state detection method, which comprises: