JPH11299671A - Automatically washable bathtub - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatically washable bathtub which dispenses with a heat source such as a hot water supply unit, facilitates construction, and can be washed with stable washing capability. SOLUTION: An automatically washable bathtub in which hot water or a washing liquid is jetted from nozzles 4a, 4b provided on a bathtub 2 into the bathtub to wash the bathtub, includes an inflow connecting means 80 for introducing hot water from the water supply side, a detergent mixing means 63 for mixing hot water with a detergent, a flow control means 65 for controlling hot water from the water supply side to a designated flow rate on the upstream of the detergent mixing means, an opening and closing means 62 for opening and closing a detergent supply path, and a washing controller 61 for controlling the bathtub washing operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic cleaning bathtub for spraying a cleaning liquid from a cleaning nozzle to remove stains on a bathtub inner wall and a bathtub cover.

[0002]

2. Description of the Related Art Conventionally, there has been provided an automatic cleaning bathtub for spraying a cleaning liquid from a nozzle provided in a bathtub in order to wash and remove dirt such as dust and scales attached to the inner wall surface of the bathtub. There is a bathtub cleaning method disclosed by the present applicant in Japanese Patent Application No. 9-91515.

[0003]

However, in the above-mentioned conventional automatic cleaning bath, the cleaning liquid is sprayed over the entire inner wall of the bath by a small number of cleaning nozzles, or is sprayed toward the vicinity of a waterline where dirt is likely to adhere. In order to do so, it was necessary to control the cleaning liquid at a predetermined flow rate. In addition, in the case where a venturi is provided in the washing pipe and the detergent is drawn in using the negative pressure generated by the flow of hot water and the hot water and the detergent are mixed, the cleaning fluid that has a significant effect on the cleaning ability is determined by the flow rate of hot water. Detergent concentration changes. Therefore, in order to perform bathtub cleaning, a heat source such as a water heater provided with a flow control means is required, and it has not been possible to directly supply water from the tap water to the automatic cleaning bathtub to wash the bathtub. Further, there is a problem that usable heat sources are limited.

[0004] Therefore, an object of the present invention is to solve the above-mentioned conventional problems and to provide a versatile automatic cleaning bathtub which can perform bathtub cleaning without a heat source.

[0005]

In order to achieve the above object, an automatic washing tub according to the present invention comprises a nozzle provided in the bath tub.
In an automatic washing tub for injecting hot water or a cleaning liquid into a bathtub to wash the bathtub, an inlet connection means for guiding hot water from the clean water side, a detergent mixing means for mixing hot water and the detergent, and hot water from the clean water side. Flow control means for controlling the flow rate to a predetermined flow upstream of the detergent mixing means, and opening and closing means for opening and closing the detergent supply path,
The first feature is that a cleaning controller for controlling a bathtub cleaning operation is provided.

According to the first aspect of the present invention, hot water supplied to the automatic washing bath from the water supply side via the water inlet connection means is controlled at a predetermined flow rate upstream of the detergent mixing means.
Whether hot water is sprayed from the nozzle toward the bathtub,
Alternatively, a washing liquid mixed with a detergent and adjusted to a predetermined concentration is jetted from a nozzle to wash the bathtub. Therefore,
The bath tub can be cleaned without selecting a heat source to be connected, or by directly guiding clean water to the water inlet connection means.

In order to achieve the above object, an automatic washing bath according to the present invention, in addition to the above-mentioned first feature, integrally comprises a detergent mixing means, a flow control means, an opening / closing means, and a washing controller. The second feature is that the mounting and cleaning unit is configured.

According to the second aspect of the present invention, since the parts for cleaning the bathtub are unitized, the connection with the piping is easy and the time required for construction is short.

According to another aspect of the present invention, there is provided an automatic washing bathtub according to the present invention, wherein the washing unit is attached to a portion of the peripheral wall of the bathtub facing the washing area, and the washing unit case is provided. And a motor that drives at least the valve inside the cleaning unit case,
A third feature is that the flow control means and the cleaning controller are housed in a watertight manner.

According to the third aspect of the present invention, since the washing unit is mounted on the peripheral wall of the bathtub facing the washing place side, even if each part for washing the bathtub breaks down, each washing unit is installed from the washing place side. After removing the connection part of the piping,
The cleaning unit can be removed together with the case, and maintenance such as repair and replacement of parts can be easily performed. In addition, since the electrical components are housed in a watertight manner in the cleaning unit case, they are not exposed to moisture which causes a failure.

According to a fourth aspect of the present invention, there is provided an automatic washing tub according to the present invention, wherein the flow control means is a water flow control valve or a constant flow valve in addition to the first to third features. The feature is.

According to the fourth aspect of the present invention, the hot water is stably controlled to a predetermined flow rate by the water amount adjusting valve or the constant flow rate valve, and the cleaning liquid having a concentration suitable for cleaning is sprayed from the nozzle toward the bathtub. Is done.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a first embodiment of an automatic cleaning bathtub according to the present invention, and is a configuration diagram showing an entire automatic bath apparatus provided with the automatic cleaning bathtub, and FIG. 2 shows an automatic cleaning bathtub according to the present invention. FIG. 3 is a front view of the bathtub of FIG. 2, FIG. 4 is a configuration diagram of a cleaning unit in the first embodiment of the automatic cleaning bathtub of the present invention, and FIG. 5 is a first view of the automatic cleaning bathtub of the present invention. FIG. 6 is an external view of a kitchen remote controller in the embodiment, FIG. 6 is a flowchart of bathtub cleaning in the first embodiment of the automatic cleaning bathtub of the present invention, and FIG. 7 is a second embodiment of the automatic cleaning bathtub of the present invention. FIG. 8 is a configuration diagram showing the entire structure in the case where tap water is connected to the cleaning bath, FIG. 8 is a flowchart of bath cleaning in the second embodiment of the automatic cleaning bath of the present invention, and FIG. 9 is a third view of the automatic cleaning bath of the present invention. 1 is an overall configuration diagram illustrating an embodiment.

Referring to FIG. 1, an automatic bath apparatus 1 includes an automatic cleaning bath 2 and a bath kettle 20 with a water heater, a cleaning unit 60, a bordering unit 80, and a controller 100 for controlling the overall operation of these components. . Bath kettle 20 with water heater has hot water supply circuit 30, reheating circuit 50, and bath drop circuit 70.

The hot water supply circuit 30 is for heating the incoming water from the water supply and supplying hot water to the automatic washing bath 2 and the curran 41, and has a heat exchanger 31.
Between the water inlet 32 and the hot water outlet 33 before and after
4, an electromagnetic opening / closing bypass valve 35 is provided in the middle of the bypass passage 34. In addition, the waterway 32
Is provided with a water amount sensor 37 for detecting the amount Qc of water entering the heat exchanger 31 and a temperature sensor 38 for detecting the temperature Tc of entering water. The hot water path 33 detects the temperature of hot water from the heat exchanger 31. There are provided a can body temperature sensor 36, a water amount servo valve 39 for controlling the amount of hot water, and a hot water temperature sensor 40 for detecting the hot water temperature after the water from the bypass passage 34 is mixed. Further, the hot water supply path 33 is connected to the cleaning pipe 18a communicating with the cleaning nozzle 4a and the rinsing pipe 1 communicating with the rinsing nozzle 4b via the edge cutting unit 80 and the cleaning unit 60.
8b.

On the other hand, the reheating circuit 50 reheats the hot water in the automatic washing bath 2 while circulating the water therein, and includes a heat exchanger 51 for reheating. 52 is a suction path, and 53 is a discharge path. In the middle of a suction passage 52 having one end connected to the suction port 14 of the bathtub 2, a temperature sensor 54 for detecting the temperature of hot water in the bathtub 2, a water flow switch 55 for detecting the presence or absence of water entering the heat exchanger 51, Circulation pump 56 for forced circulation, bathtub 2
A water level sensor (not shown) for detecting the water level is sequentially arranged.

Further, the bath drop circuit 70 connects the hot water supply circuit 30 and the additional heating circuit 50 to supply hot water to the bathtub 2.
A water amount sensor 71 for detecting the amount of drop, an electromagnetic opening / closing type drop valve 72, and a check valve 73 are sequentially provided.

The edge cutting unit 80 is attached to the washing place side of the outer peripheral wall of the bathtub 2 to guide hot water from the clean water side to the washing unit 60.
A water flow sensor 81 for detecting the amount of hot water supplied to the water supply unit 0, a solenoid valve 82, and a non-return for preventing the backflow of miscellaneous water from the bathtub 2 side which is a miscellaneous circuit to the hot water supply circuit 30 which is a water supply circuit. A valve 83 is provided.

The washing unit 60 is mounted on the outer peripheral wall of the bathtub 2 on the washing side, and controls a flow rate of a hot water supplied from the hot water supply channel 33 through the edge cutting unit 80, and a water flow servo valve 65. A three-way cleaning valve 64 for switching between a cleaning pipe 18a communicating with the cleaning nozzle 4a and a rinsing pipe 18b communicating with the rinsing nozzle 4b;
A detergent two-way valve 62 for opening and closing the detergent supply path leading to 1;
It has a venturi 63 for generating a negative pressure by the flow of hot water supplied from the hot water supply path 33 to the cleaning pipe 18a to draw the detergent into the cleaning pipe 18a, and a cleaning controller 61 for controlling a bathtub cleaning operation. As shown in FIG. 4, the respective drive motors 67 and 68 of the detergent two-way valve 62 and the washing three-way valve 64, the water amount servo valve 65, and the washing controller 61 are provided with a washing unit case 66 whose periphery is sealed by a packing (not shown). Because it is housed in a bathroom, it is not affected by moisture in the bathroom.

A power supply box 110 is mounted on the ceiling of the bathroom as a power supply for a drive unit of each component constituting the cleaning unit 60 and the edge cutting unit 80.

The controller 100 includes, for example, a control main unit 101 composed of a microcomputer, a kitchen remote control device 102 installed in a kitchen or the like, a bathroom remote control device 103 installed in a bathroom, and a remote control 111 dedicated to bathtub cleaning. Consists of The cleaning controller 61 communicates information about the cleaning operation with the control main unit 101 via the bathtub cleaning remote controller 111. The bathtub cleaning remote control 111 may be attached to a convenient location for the user.

The control body 101 includes input data from the remote controllers 102, 103, and 111, and various sensors 36, 3 provided on the bathtub 20 with the water heater.
Based on the detection signals from 7, 38, 40,..., The operation of each movable portion such as each valve 35, 39, 62, 64, 65, 82,.
This is for controlling the combustion of a burner (not shown) for the heat exchangers 31 and 51.

Each remote control device 102, 103, 111
Is for inputting various commands to the control main unit 101. For example, in the case of a kitchen remote control device 102, as shown in FIG. A bath automatic operation switch 105 for automatically filling the bath 2 and switches 107 and 108 for washing the bathtub 2 are arranged, and a display unit 109 for displaying a hot water temperature at the time of hot water supply is provided. . In this embodiment, when the switch 107 for the standard cleaning is pressed for a short time, the “standard cleaning mode” is pressed, and when the switch 107 is pressed for a long time (for example, 5 seconds or more), the “careful cleaning mode” is pressed. For example, the “saving economy mode” is set respectively.

Next, in the automatic bath apparatus having the above configuration,
The operation when performing bathtub cleaning will be mainly described with reference to the flowchart shown in FIG.

Now, for example, the kitchen remote controller 102
When any one of the cleaning switches 107 or 108 is operated (step 1), the control main unit 101 determines whether the automatic bath operation switch 105 or the additional heating switch (not shown) of the bathroom remote controller 103 is operated. Is determined (step 2).

When these switches are operated, it is determined that the bath is in use, the cleaning mode is canceled, and the display unit 109 displays that the bath is in use (step 3). ). On the other hand, when other switches such as the bath automatic operation switch 105 are not operated, the control main unit 101 sets the water volume servo valve 39
Is fully opened, and it is determined whether or not a bathtub lid (not shown) is placed on the bathtub 2 based on the detection output of the lid sensor 93 (step 4).

If the bathtub lid is not placed, a message indicating that the bathtub lid should be placed is displayed on the display unit 109 (step 5), and the process returns to step 4. When the bathtub lid is placed on the bathtub 2, the drain cock 7 is opened so that the hot water in the bathtub 2 is constantly drained (step 6). The time T is a preset maximum drainage time T
It is determined whether or not MAX is exceeded (step 7).
The maximum drainage time TMAX in this case is determined by adding the extra time to the time required to completely drain the hot water from the bathtub 2 after the bathtub 2 is full and the drain cock 7 is opened. For example, TMAX is set to 10 minutes.

In step 7, the maximum drainage time TMA has already been set.
If X has elapsed, it is determined that the remaining water in the bathtub 2 has been completely drained, and the process proceeds to step 10. If the maximum drainage time TMAX has not elapsed in step 7,
Subsequently, it is determined whether or not there is residual water in the bathtub 2 based on the detection output of a water level sensor (not shown) (step 8).
Then, when the detection output of the water level sensor is turned off,
The elapsed time T from this point is a predetermined time T0
It is determined whether or not this is the case (step 9). The predetermined time T0 in this case is determined in consideration of the time required until the residual water in the bottom of the bathtub 2 is completely drained after the residual water in the bathtub 2 falls below the water level detectable by the water level sensor. For example, T0 is set to 3 minutes.

If it is determined in step 9 that the predetermined time T0 has not yet elapsed, the process returns to step 7, while if the predetermined time T0 has elapsed, it is determined that there is no remaining water in the bathtub 2 and the process shifts to the preliminary rinsing mode ( Step 10).

In the preliminary rinsing mode, the control main unit 1
01, the bypass valve 35 of the hot water supply circuit 30 of the bath kettle 20 with water heater is closed, the cleaning controller 61 opens the solenoid valve 82, switches the cleaning three-way valve 64 communicating with the cleaning nozzle 4a to the cleaning pipe 18a side, and furthermore, the detergent The two-way valve 62 is closed. Water from the water inlet 32 in the hot water supply circuit 30 flows through the heat exchanger 31 and the hot water outlet 33 to the cleaning unit 60 via the edge cutting unit 80. At this time, the cleaning controller 61 uses the detection value of the water amount sensor 81 to
When the use of the other plug such as the curan 41 is detected, the cleaning operation is set to a standby state. In this preliminary rinsing mode, the amount of hot and cold water flowing through the cleaning unit 60 detected by the water amount sensor 81 is always a constant water amount (for example, 5 liters / minute).
The opening of the water amount servo valve 65 is adjusted so that

The control main unit 101 controls combustion by heating the heat exchanger 31 of the hot water supply circuit 30 so that hot water of a predetermined temperature is supplied to the cleaning unit 60. The optimal temperature of the rinsing water and cleaning solution is between 37 ° C and 48 ° C.
When the temperature becomes higher than 0 ° C., dirt components such as oils and fats and proteins adhered to the bathtub 2 are solidified, and the cleaning effect is reduced. Therefore, when washing the bathtub, the kitchen remote control device 1
Regardless of the set temperature of the bathroom remote control device 02 and the bathroom remote control device 103, the combustion control is performed so as to reach a predetermined temperature (for example, 48 ° C.) suitable for cleaning. Needless to say, after completion of bathtub cleaning, combustion control is performed according to the set temperature of each remote control device.

In this way, the hot water that has flowed out of the hot water supply circuit 30 is
Venturi 63 from hot water supply path 33 through washing three-way valve 64
Leads to. At this time, since the detergent two-way valve 62 is closed, only warm water is sprayed from the washing nozzle 4a as washing water through the washing pipe 18a. As a result, the scale attached to the peripheral wall 2a of the bathtub 1 is preliminarily washed. Also, because the bathtub surface gets wet, when you spray the cleaning liquid,
Since the cleaning liquid easily spreads over the entire surface and the bathtub surface is warmed prior to the injection of the cleaning liquid, the cleaning effect of the detergent can be improved.

The state of the pre-cleaning is maintained for a predetermined time T.
1 (for example, 2.5 minutes) (Step 1
1) Then, a predetermined amount (for example, 10 liters) of water or hot water is dropped from the hot water supply circuit 30 to the bathtub 2 from the discharge path 53 via the bath dropping circuit 70 and the reheating circuit 50 (step 1).
2). Thereby, the residual water in the reheating circuit 50 is drained from the drain plug 7 which is already open, and is replaced with clean hot water. At the time of the bath automatic hot water supply operation after washing the bathtub, clean hot water is supplied to the bathtub 2 from the beginning. It is dropped. It should be noted that such residual water draining operation in the reheating circuit 50 may be performed at any stage during the bathtub cleaning operation.

Next, the cleaning controller 61 determines whether the currently set one of the “standard mode”, the “conservative cleaning mode”, and the “elaborate cleaning mode” (step 13), The opening degree of the servo valve 65 is adjusted so that a predetermined amount of water (for example, 5 liters / minute) flows out of the bathtub 20 with the water heater, and the detergent two-way valve 62 is opened. Thereby, the detergent stored in the detergent tank 91 is mixed with the hot water by the negative pressure generated when the hot water from the bath kettle 20 with the water heater passes through the venturi 63, and then the cleaning nozzle passes through the cleaning pipe 18a. 4g, and the scale attached to the peripheral wall 2a of the bathtub 2,
It is washed by a detergent-mixed washing liquid.

At the time of cleaning with the cleaning liquid, the "conservative cleaning mode", the "standard cleaning mode", and the "elaborate cleaning mode"
The predetermined times Ta, Tb, Tc are respectively set according to the respective settings of
(However, while Ta <Tb <Tc), the injection of hot and cold water mixed with the detergent from the cleaning nozzle 4a is continued (Step 1).
4, 15, 16). The predetermined time in this case is set to, for example, Ta = 7 seconds, Tb = 16 seconds, and Tc = 32 seconds.

Then, any of the washing times Ta,
When Tb and Tc have elapsed, the cleaning pipe 1
In order to prevent the hot and cold water in the nozzle 8a from flowing backward, the detergent two-way valve 82 is first closed, then the solenoid valve 82 of the edge cutting unit 80 is closed, and the injection of the washing liquid from the washing nozzle 4a is temporarily stopped (step 17) In this state, the process waits until a predetermined time T2 elapses (step 18). This waiting time T
2 is determined in consideration of the time required for the detergent to sufficiently penetrate into the scale and for the cleaning liquid to flow down the side wall of the bathtub 2 and permeate the entire inner wall of the bathtub 2, and is set to, for example, T0 = 2 minutes. Have been. As described above, the dirty portion is directly sprayed to remove the dirt, and the other portion is cleaned by using the flowing down of the cleaning liquid. Therefore, the cleaning can be effectively performed while saving the detergent.

Next, the cleaning controller 61 shifts to the rinsing mode. In the rinsing mode, first, the rinsing operation 1 (step 19) by the cleaning nozzle 4a is performed. Since the rinsing operation 1 is the same as that described in step 10, the detailed description is omitted here. After the bathtub cleaning by the rinsing operation 1 is continued for a predetermined time T3 (for example, 3 minutes) (step 20), the rinsing is performed by subsequently switching the cleaning three-way valve 64 to the rinsing pipe 18b communicating with the rinsing nozzle 4b. A rinsing operation 2 in which only hot water is sprayed from the nozzle 4b as rinsing water to a bathtub lid (not shown) placed on the bathtub.
(Step 21) is performed. The amount of rinse water at this time is adjusted to, for example, 10 liters / minute by the water amount servo valve 65. Thereby, the cleaning liquid remaining on the bathtub lid is completely washed away.

The rinsing operation 2 is performed for a predetermined time T4.
After the continuation (for example, 3 minutes) (step 22), the cleaning three-way valve 64 is closed and the cleaning operation ends.

FIG. 7 shows a second embodiment of the automatic washing tub according to the present invention, in which tap water is directly supplied to the bordering unit 80 without going through the bathtub 20 with a water heater. Since the downstream side from the edge cutting unit 80 is the same as that of the automatic bath apparatus 1 shown in FIG. 1, the detailed description is omitted here.

By operating the remote controller 111 for cleaning,
When bathtub cleaning is instructed, the cleaning controller 61 performs a bathtub cleaning operation according to the flowchart of FIG.
That is, when a cleaning command is issued (step 1), it is determined whether or not a bathtub lid (not shown) is placed on the bathtub 2 based on the detection output of the lid sensor 93 (step 2).

If the bathtub lid is not placed, an instruction is given to place the bathtub lid (step 3), and the process returns to step 2. When the bathtub lid is placed on the bathtub 2,
The drain cock 7 is opened to make the hot water in the bathtub 2 always drain (Step 4). Next, it is determined whether the elapsed time T since opening the drain cock 7 exceeds a preset maximum drain time TMAX. Is determined (step 5). The maximum drainage time TMAX in this case is determined by adding the extra time to the time required to completely drain the hot water from the bathtub 2 after the bathtub 2 is full and the drain cock 7 is opened. For example, TMAX is set to 10 minutes.
If the maximum drainage time TMAX has elapsed in step 5, it is determined that the residual water in the bathtub 2 has been completely drained, and the process shifts to the preliminary rinsing mode (step 6).

Since the operation after this is the same as that after step 10 in the flowchart shown in FIG.
Description is omitted. However, the bath dropping operation of step 12 in FIG. 6 is not performed.

FIG. 9 shows a third embodiment of the automatic cleaning bath according to the present invention. In place of the water volume servo valve 65, the cleaning pipe 18a and the rinsing pipe 18b downstream of the three-way cleaning valve 64 are used.
And 5 liters / min and 10
FIG. 3 is an overall configuration diagram in a case where constant flow valves 121 and 122 for adjusting a flow rate in liter / minute are provided to constitute a cleaning unit 60. In this way, a desired flow rate can be easily obtained at the time of cleaning the bathtub, and a drive unit is not required for controlling the flow rate, so that there is no failure and the durability is improved.

In the above-described embodiment, the bathtub cleaning remote controller 111 is electrically connected to the control main body 101. In this case, the control main body 101 is connected to the predetermined temperature (for the bathtub cleaning). For example, combustion control of the heat source is performed so as to obtain 48 ° C.). As another example, a remote control 111 dedicated to bathtub cleaning is provided by the cleaning controller 6.
1 and is not electrically connected to the heat source, the cleaning is performed at the incoming water temperature supplied to the cleaning unit 60. In such a case, it is desirable to manually set the set temperature of the heat source remote controller to a predetermined temperature (for example, 48 ° C.).

As described above, in the automatic cleaning bathtub of the present invention, it can be connected directly to clean water, connected to a heat source compatible with the bathtub cleaning function, or connected to a heat source not compatible with the cleaning function. In any case, the bath can be automatically cleaned.

[0046]

With the above-described configuration, the automatic cleaning bath according to the present invention has the following effects. That is, according to the automatic washing bath of claim 1,
By providing a flow rate control means for controlling the flow rate of hot water supplied from the clean water side, a cleaning liquid obtained by mixing a detergent with supplied water or hot water is injected at a predetermined detergent concentration and flow rate,
Stable cleaning performance can be obtained, and the flow rate control on the heat source side during bathtub cleaning is not required, so that a heat source without these functions can be connected and used. Also, without connecting to a heat source, the water can be supplied directly to the automatic cleaning bath to clean the bath. In addition, according to the automatic cleaning bath according to the second aspect, since each part for cleaning the bathtub is unitized, connection to the piping is easy, and the time required for construction is short. According to the third aspect of the present invention, since the washing unit is attached to the portion of the peripheral wall of the bathtub facing the washing place, even if each part for washing the bathtub breaks down, each washing unit is installed from the washing place side. After removing the connecting portion of the pipe, the cleaning unit can be removed together with the case, so that work such as repair and replacement of parts can be easily performed. In addition, since the electrical components are housed in a watertight manner in the cleaning unit case, they are not exposed to moisture which causes a failure. Further, according to the automatic cleaning bath according to the fourth aspect, by controlling the hot water and the water at a predetermined flow rate by the water amount adjusting valve or the constant flow rate valve, the cleaning liquid having a concentration suitable for cleaning can be sprayed over the entire inner surface of the bathtub. Or, it can be sprayed toward the vicinity of the waterline where dirt easily adheres, and a stable cleaning ability can be obtained.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of an automatic cleaning bathtub of the present invention, and is a configuration diagram showing an entire automatic bath apparatus provided with the automatic cleaning bathtub.

FIG. 2 is a plan view of the automatic washing tub of the present invention.

FIG. 3 is a front view of the bathtub of FIG. 2;

FIG. 4 is a configuration diagram of a cleaning unit in the first embodiment of the automatic cleaning bathtub of the present invention.

FIG. 5 is an external view of a kitchen remote control device according to the first embodiment of the automatic cleaning bathtub of the present invention.

FIG. 6 is a flowchart of bathtub cleaning in the first embodiment of the automatic cleaning bathtub of the present invention.

FIG. 7 is a configuration diagram illustrating a second embodiment of the automatic cleaning bathtub according to the present invention, in which water is connected to the automatic cleaning bathtub.

FIG. 8 is a flowchart of bathtub cleaning in a second embodiment of the automatic cleaning bathtub of the present invention.

FIG. 9 is an overall configuration diagram showing a third embodiment of the automatic cleaning bathtub of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic bath apparatus 2 Bathtub 20 Bath kettle with water heater 30 Hot-water supply circuit 50 Reheating circuit 52 Suction path 53 Discharge path 60 Cleaning unit 61 Cleaning controller 62 Detergent two-way valve 63 Venturi 64 Cleaning three-way valve 65 Water volume servo valve 80 Edge cutting unit 101 Control body

Continued on the front page (72) Inventor Shinichi Ueda 93, Edo-cho, Chuo-ku, Kobe, Hyogo Prefecture Inside Noritz Co., Ltd. (72) Inventor Kengo Shoji 93, Edo-cho, Chuo-ku, Kobe City, Hyogo Prefecture Noritsu Co., Ltd. (72) Inventor Akio Nakano 93 Noritsu, Edo-cho, Chuo-ku, Kobe, Hyogo (72) Inventor Toshito Kataoka 93 Noritsu, Edo-cho, Chuo-ku, Kobe, Hyogo, Japan (72) Inventor Akihiro Yanada Kobe, Hyogo, Japan 93 Noritsu, Edo-cho, Chuo-ku

Claims (4)

[Claims] 1. An automatic washing bathtub for washing a bathtub by spraying hot water or a cleaning liquid into the bathtub from a nozzle provided in the bathtub, and mixing the hot water and the detergent with an inlet connection means for guiding hot water from the clean water side. A detergent mixing means, a flow control means for controlling hot and cold water from the clean water side to a predetermined flow rate upstream of the detergent mixing means, an opening / closing means for opening / closing a detergent supply path, and a washing controller for controlling a bathtub washing operation. An automatic washing tub characterized by the following. 2. The detergent mixing means, a flow control means,
The opening / closing means and the cleaning controller are integrally attached,
2. The automatic washing tub according to claim 1, wherein the washing unit comprises a washing unit. 3. The washing unit is attached to a portion of the peripheral wall of the bathtub facing the washing place side, and includes a washing unit case. Inside the washing unit case, at least a motor for driving opening / closing means, a flow control means, 3. The automatic washing tub according to claim 2, wherein the washing controller and the washing controller are housed in a watertight manner. 4. The automatic cleaning bath according to claim 1, wherein the flow control means is a water flow regulating valve or a constant flow valve.