JP7255160B2 - bathtub cleaning equipment - Google Patents

Description

Aspects of the present invention relate generally to bathtub cleaning devices.

A bathtub cleaning device that automatically cleans a bathtub is known (Patent Documents 1 and 2). Such a bathtub washing apparatus can automatically wash the inner wall surface of the bathtub by spraying detergent, water (hot water), or the like on the inner wall surface of the bathtub.

Japanese Patent No. 3204742 JP 2013-9853 A

2. Description of the Related Art Conventionally, there has been known a bathtub cleaning apparatus that cleans the inner wall surface of a bathtub by ejecting a detergent solution diluted with water from a nozzle toward the inner wall surface of the bathtub. For example, in the bathtub cleaning apparatus of Patent Document 1, detergent water ejected from a nozzle into the bathtub is collected and stored in a water storage tank, and a circulation pump is operated to suck the detergent water from the water storage tank into the bathtub. It is configured such that circulation cleaning is performed by re-jetting. As in Patent Document 1, in a configuration (recovery type) in which the detergent water ejected from the nozzle into the bathtub is collected and the collected detergent water is ejected from the nozzle again into the bathtub, the entire bathtub is covered. It is possible to suppress the consumption of detergent water while making it possible to wash the

However, when the drain port and the recovery port are formed at a distance as in Patent Document 1, if the inner bottom surface of the bathtub is inclined toward the drain port in order to ensure the drainage performance, the recovery On the other hand, if the inner bottom surface of the bathtub is inclined toward the recovery port in order to secure the recovery performance, there is a problem that the drainage performance cannot be secured.

Therefore, in a recovery-type bathtub cleaning device, a configuration in which a recovery port and a drain port are arranged close to each other as in Patent Document 2 is conceivable. In the configuration of Patent Document 2, the drainage part has a double pipe structure having a drainage port and a recovery port, so that while using one drainage part, the water inside the bathtub is separated from the outside by the drainage port and the recovery port. It is possible to both drain the water into the tank and collect the detergent water into the water storage tank.

Here, in order to further improve the detergency without increasing the amount of detergent used, it is required to collect the detergent water without waste. However, in the configuration of Patent Document 2, since the drain port is open when the detergent water is recovered, depending on the amount of detergent water and the state of the channel on the recovery side, the detergent water to be recovered may flow through the drain port instead of the recovery port. There is a risk that it will be discharged from the flow channel on the drain side.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a recovery-type bathtub cleaning apparatus capable of improving the recovery rate of detergent water.

A first invention comprises a detergent tank for storing detergent, a detergent mixing part for mixing detergent supplied from the detergent tank and water supplied from a water supply source to generate detergent water, and a bathtub for mixing the detergent water. a cleaning nozzle that jets toward the inner wall surface of the bath, a cleaning channel that connects the detergent mixing section and the cleaning nozzle, and a drainage port and a recovery port that are provided in the drainage section of the bathtub and open at the drainage section. a recovery channel for returning the detergent water recovered from the recovery port to between the detergent tank and the washing nozzle; a first state in which the drain port is open; an opening/closing portion having a second state in which the mouth is closed and the recovery opening is opened; and the opening/closing portion is set to the first state, and the opening/closing portion is set to the second state when collecting the detergent water jetted onto the inner wall surface of the bathtub. .

According to this bathtub cleaning device, the drain member has a drain port and a recovery port that open (that is, are provided at positions close to each other) in the drain portion of the bathtub, so that both drainage performance and recovery performance can be achieved. can be done. Further, when the water stored in the bathtub is drained, by setting the opening/closing part to the first state (the drain port is open), the water stored in the bathtub can be reliably drained, and the water stored in the bathtub can be drained. When the detergent water sprayed on the wall surface is collected, the opening/closing part is set to the second state (the drain port is closed and the collection port is open), thereby suppressing the detergent water from flowing into the drain port and being discharged. As a result, it is possible to improve the recovery rate of detergent water while achieving both drainage performance and recovery performance. Therefore, the detergency can be improved without increasing the amount of detergent used.

In a second aspect based on the first aspect, the opening/closing portion is a single opening/closing valve that moves in a vertical direction, and the opening/closing valve is in the first state at a first position. The bathtub cleaning device is characterized in that it is in the second state at the second position where the height is also low.

According to this bathtub cleaning device, since the opening/closing portion is composed of one opening/closing valve, it is possible to switch between the first state and the second state with a simple configuration. As a result, it is possible to achieve both drainage performance and recovery performance, and to more easily improve the recovery rate of the detergent water.

A third invention is the bathtub cleaning device according to the second invention, wherein the on-off valve is in a third state in which the drain is closed at a third position lower than the second position. .

According to this bathtub cleaning device, the on-off valve is in the third state in which the drain is closed, so that it is possible to suppress the discharge of water from the drain when water is stored in the bathtub.

According to a fourth aspect, in the third aspect, a detergent flow path connecting the detergent tank and the detergent mixing section, the detergent flow path, the washing flow path, and the recovery flow path are provided. and a pump, wherein the controller can execute a main washing mode in which the detergent water is jetted from the washing nozzle, and the controller moves the opening/closing part to the third position in the main washing mode. After a predetermined amount of the detergent water is jetted from the washing nozzle, the pump is operated while the opening/closing portion is held at the second position. The bathtub cleaning apparatus is characterized in that recovery of the detergent water is started.

According to this bathtub cleaning device, the detergent water used for cleaning can be temporarily stored in the bathtub by ejecting the detergent water from the cleaning nozzle while the opening/closing portion is held at the third position. By actuating the pump while the opening/closing portion is held at the second position, it is possible to start collecting the detergent water stored in the bathtub. As a result, the detergent water can be circulated while maintaining the state in which the recovery port is filled with the detergent water. Therefore, it is possible to suppress the generation of bubbles caused by the suction of air by the pump when the detergent water is circulated without providing a recovery part, and the shapes of the recovery channel, the drainage member, the detergent mixing part, etc. can be made simple and compact. .

A fifth invention is the bathtub cleaning device according to any one of the second to fourth inventions, wherein the recovery port is provided so as to surround the drain port.

According to this bathtub cleaning device, since the recovery port is provided so as to surround the drain port, the detergent water that has reached the drain portion of the bathtub first flows into the recovery port outside the drain port. It can be recovered quickly.

In a sixth aspect based on the first aspect, the opening/closing portion is one opening/closing valve that rotates between the drain port and the recovery port, and the opening/closing valve, in the first state, The bathtub cleaning device is characterized in that the drainage port is opened and the recovery port is closed.

According to this bathtub cleaning device, by providing an on-off valve that opens the drain port and closes the recovery port in the first state, the drain port is opened and recovered when the water stored in the bathtub is drained. You can keep your mouth shut. As a result, it is possible to prevent the water from flowing into the recovery port while ensuring that the water is discharged from the drain port. Therefore, it is possible to prevent the dirt contained in the water stored in the bathtub from clogging the recovery channel and the cleaning channel through the recovery port, thereby reducing the recovery rate of the detergent water.

According to a seventh aspect, in any one of the first to sixth aspects, a detergent flow path connecting the detergent tank and the detergent mixing section, and a detergent flow path provided in the recovery flow path, wherein the recovery flow path is controlled by the control section. An on-off valve that opens and closes a channel, and a pump provided in any one of the detergent channel, the cleaning channel, and the recovery channel, wherein the control unit causes the cleaning nozzle to supply the detergent water. A main washing mode for jetting can be executed, and the control unit, in the main washing mode, jets the detergent water from the washing nozzle with the opening/closing part held in the second state and the opening/closing valve closed. and when a predetermined amount of the detergent water is jetted from the washing nozzle, the pump is operated while the on-off valve is held open to start collecting the detergent water. be.

According to this bathtub washing device, the detergent water used for washing is temporarily stored in the bathtub by jetting detergent water from the washing nozzle while the opening/closing portion is held in the second state and the opening/closing valve is closed. be able to. By actuating the pump while the on-off valve is kept open, it is possible to start collecting the detergent water stored in the bathtub. As a result, the detergent water can be circulated while maintaining the state in which the recovery port is filled with the detergent water. Therefore, it is possible to suppress the generation of bubbles caused by the suction of air by the pump when the detergent water is circulated without providing a recovery part, and the shapes of the recovery channel, the drainage member, the detergent mixing part, etc. can be made simple and compact. .

An eighth invention is characterized in that, in any one of the first to seventh inventions, further comprising a recovery part provided in the recovery channel for storing the detergent water recovered from the recovery port. It is a bathtub cleaning device that

According to this bathtub cleaning device, by providing the recovery unit for storing the detergent water recovered from the recovery port, the detergent water can be circulated while maintaining the state in which the pipe of the recovery channel is filled with the liquid. . As a result, it is possible to prevent the pump from sucking air and generating bubbles when the detergent water is circulated.

According to an aspect of the present invention, there is provided a bathtub cleaning apparatus that can improve the recovery rate of detergent water in a recovery type bathtub cleaning apparatus.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which represents typically the bathtub cleaning apparatus which concerns on embodiment. 2(a) and 2(b) are a perspective view and a cross-sectional view schematically showing a drainage member of the bathtub cleaning device according to the embodiment. FIG. 4 is a side view schematically showing part of the drainage member of the bathtub cleaning device according to the embodiment; FIG. 3 is a perspective view schematically showing part of a drainage member of the bathtub cleaning device according to the embodiment; FIG. 4 is a cross-sectional view schematically showing the periphery of the drainage member of the bathtub cleaning device according to the embodiment; FIG. 4 is a cross-sectional view schematically showing the periphery of the drainage member of the bathtub cleaning device according to the embodiment; FIG. 4 is a cross-sectional view schematically showing the periphery of the drainage member of the bathtub cleaning device according to the embodiment; FIG. 5 is a cross-sectional view schematically showing the periphery of a drainage member of a bathtub cleaning device according to a modified example of the embodiment; FIG. 5 is a cross-sectional view schematically showing the periphery of a drainage member of a bathtub cleaning device according to a modified example of the embodiment; FIG. 5 is a cross-sectional view schematically showing the periphery of a drainage member of a bathtub cleaning device according to a modified example of the embodiment; It is a flow chart showing the operation of the bathtub cleaning device according to the embodiment. 4 is a flow chart showing the operation in the main cleaning mode of the bathtub cleaning device according to the embodiment. 9 is a flow chart showing a modification of the operation in the main cleaning mode of the bathtub cleaning device according to the embodiment; 9 is a flow chart showing a modification of the operation in the main cleaning mode of the bathtub cleaning device according to the embodiment; 15(a) and 15(b) are cross-sectional views schematically showing the periphery of a drainage member of a bathtub cleaning device according to a modification of the embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in each drawing, the same reference numerals are given to the same constituent elements, and detailed description thereof will be omitted as appropriate.

FIG. 1 is an explanatory diagram schematically showing a bathtub cleaning device according to an embodiment.
As shown in FIG. 1 , the bathtub cleaning device 200 includes a detergent tank 10 , a detergent mixing section 20 , a cleaning nozzle 30 , a control section 40 and a drainage member 50 . Bathtub cleaning device 200 is installed in bathtub 100 .

The detergent tank 10 is connected to a detergent input port 135 provided on the upper surface of the rim of the bathtub 100 and stores detergent input from the detergent input port 135 . The detergent tank 10 is provided with a water level detector 11 such as a float switch.

The detergent mixing section 20 is provided downstream of the detergent tank 10 and the water supply source WS. The detergent mixing unit 20 mixes the detergent supplied from the detergent tank 10 and the water supplied from the water supply source WS to generate detergent water. In the specification of the present application, "water" includes not only cold water but also heated hot water. That is, the water supply source WS may have a water heater.

The detergent mixing unit 20 is, for example, a tank that stores detergent water. The detergent mixing unit 20 stores the detergent water when jetting the detergent water from the washing nozzle 30 , and stores the water when jetting the water from the washing nozzle 30 . The detergent mixing section 20 is provided with a water level detection section 21 such as a float switch. Note that the detergent mixing unit 20 may be a venturi tube or the like.

A detergent channel 15 is provided between the detergent tank 10 and the detergent mixing section 20 . The detergent channel 15 connects the detergent tank 10 and the detergent mixing section 20 . The detergent channel 15 is provided with an on-off valve 16 , a flow rate adjusting section 17 , a pump 18 and a backflow preventing section 19 .

The on-off valve 16 is, for example, an electromagnetic valve. The on-off valve 16 controls the supply of detergent to the detergent mixing section 20 . By opening the on-off valve 16 , the detergent stored in the detergent tank 10 is supplied to the detergent mixing section 20 . By closing the on-off valve 16, the supply of detergent from the detergent tank 10 to the detergent mixing section 20 is stopped.

The flow rate adjusting section 17 is provided downstream of the on-off valve 16 . The flow rate adjuster 17 is, for example, an orifice. The flow rate adjusting section 17 adjusts the flow rate of the detergent flowing through the detergent channel 15 . The flow rate adjusting unit 17 is provided as necessary and can be omitted. The “downstream” of the detergent channel 15 is the downstream side (that is, the detergent mixing section 20 side) when the liquid flows from the detergent tank 10 toward the detergent mixing section 20 .

The pump 18 is provided downstream of the on-off valve 16 and the flow rate adjusting section 17 . The pump 18 sends the detergent in the detergent channel 15 to the detergent mixing section 20 .

The backflow prevention section 19 is provided between the on-off valve 16 and the flow rate adjustment section 17 . The backflow prevention part 19 suppresses backflow of liquid from the pump 18 side to the on-off valve 16 side. The backflow prevention part 19 is, for example, a check valve.

A water supply channel 25 is provided between the water supply source WS and the detergent mixing section 20 . The water supply channel 25 connects the water supply source WS and the detergent mixing section 20 . The water supply channel 25 is provided with an on-off valve 26 and a flow rate adjusting section 27 .

The on-off valve 26 is, for example, an electromagnetic valve. The on-off valve 26 controls the supply of water to the detergent mixing section 20 . Water from the water supply source WS is supplied to the detergent mixing section 20 by opening the on-off valve 26 . By closing the on-off valve 26, the supply of water from the water supply source WS to the detergent mixing section 20 is stopped.

The flow rate adjusting section 27 is provided downstream of the on-off valve 26 . The flow rate adjusting section 27 is, for example, a constant flow valve. The flow rate adjuster 27 adjusts the flow rate of water flowing through the water supply channel 25 . Note that the “downstream” of the water supply channel 25 is the downstream side (that is, the detergent mixing section 20 side) when the liquid flows from the water supply source WS toward the detergent mixing section 20 .

Washing nozzle 30 is provided on inner wall surface 110 of bathtub 100 . More specifically, the cleaning nozzle 30 is provided on an inner bottom surface 111 located at the bottom of the inner wall surface 110 of the bathtub 100 or an inner wall surface 112 located above the inner bottom surface 111 . Wash nozzle 30 jets liquid (detergent water or water) toward inner wall surface 110 (inner wall surface 112 ) of bathtub 100 . The cleaning nozzle 30 is rotatable about the vertical direction (that is, in the horizontal direction) by a motor 32 .

A washing channel 35 is provided between the detergent mixing section 20 and the washing nozzle 30 . The cleaning flow path 35 connects the detergent mixing section 20 and the cleaning nozzle 30 . The cleaning flow path 35 is provided with an ejection control section 36 and a backflow prevention section 37 .

The ejection control unit 36 controls ejection of liquid from the cleaning nozzle 30 . The ejection control section 36 is provided downstream of the detergent mixing section 20 . The ejection control unit 36 is, for example, a pump. The ejection control unit 36 may be an on-off valve such as an electromagnetic valve. In this case, a pumping means for pumping the liquid to the washing nozzle 30 is provided, such as by using a venturi tube as the detergent mixing section 20 or, if the detergent mixing section 20 is a tank, elevating the position of the tank to increase the head pressure. In addition, the “downstream” of the cleaning flow path 35 is the downstream side (that is, the cleaning nozzle 30 side) when the liquid flows from the detergent mixing section 20 toward the cleaning nozzle 30 .

The backflow prevention section 37 is provided downstream of the ejection control section 36 . The backflow prevention part 37 suppresses backflow of detergent water, water, waste water, etc. from the washing nozzle 30 to the detergent mixing part 20 . The backflow prevention part 37 is, for example, a check valve. The backflow prevention part 37 may be an on-off valve such as an electromagnetic valve. A plurality of backflow prevention portions 37 may be provided.

The inner bottom surface 111 of the bathtub 100 is provided with a drainage part 115 for discharging the liquid in the bathtub 100 . The drainage part 115 is a cylindrical part that extends downward from the inner bottom surface 111 and penetrates in the vertical direction. The inner bottom surface 111 of the bathtub 100 slopes downward toward the drain 115 . By providing such a downward inclination, the liquid in the bathtub 100 can be guided to the drainage section 115 along the inner bottom surface 111 .

The drainage member 50 is provided in the drainage portion 115 of the bathtub 100 . The drainage member 50 has a drainage port 51 and a collection port 52 . The drain port 51 and the recovery port 52 open at the drain portion 115 . That is, the drain port 51 and the recovery port 52 are provided at positions close to each other. By providing the drain port 51 and the recovery port 52 at positions close to each other, it is possible to achieve both drainage performance and recovery performance.

The drain port 51 and the recovery port 52 divide the liquid flowing into the drain part 115 into a drain side and a recovery side. That is, of the liquid that has flowed into the drain portion 115 , the liquid that has flowed to the drain port 51 is discharged to the outside of the bathtub cleaning device 200 . On the other hand, the liquid that has flowed into the recovery port 52 out of the liquid that has flowed into the drainage portion 115 is returned (collected) from the recovery port 52 into the bathtub cleaning device 200 . The drainage member 50 will be described later.

The bathtub cleaning device 200 has a recovery channel 55 for returning the liquid (detergent water) recovered from the recovery port 52 between the detergent tank 10 and the cleaning nozzle 30 . One end of the recovery channel 55 is connected to the drainage section 115 (the recovery port 52). The other end of recovery channel 55 is connected to detergent channel 15 , detergent mixing section 20 , or cleaning channel 35 . When the detergent mixing section 20 is a venturi tube, the other end of the recovery channel 55 is connected to the cleaning channel 35 . An on-off valve 56 is provided in the recovery channel 55 . The on-off valve 56 is, for example, an electromagnetic valve.

A filter 80 for filtering the collected detergent water is provided on the collection channel 55 . The filter 80 is provided, for example, at the recovery port 52 . The filter 80 may be provided downstream of the recovery port 52 (on the other end side of the recovery channel 55).

The recovery channel 55 is provided with a recovery portion 57 that stores the detergent water recovered from the recovery port 52 . By providing such a recovery part 57, the detergent water can be circulated while maintaining the state in which the inside of the tube of the recovery channel 55 is filled with the liquid. As a result, it is possible to prevent the pump 18 from sucking air and generating bubbles when the detergent water is circulated.

In this example, the recovery part 57 is provided in the drainage member 50 . The recovery part 57 may be provided separately from the drainage member 50 . Further, when the detergent mixing section 20 is a tank, the detergent water collected from the collection port 52 may be stored in the detergent mixing section 20 without providing the collection section 57 .

The detergent water collected from the collection port 52 passes through the collection channel 55 and is returned to the detergent mixing section 20 by the pump 18 . Then, when a predetermined amount of the collected detergent water is accumulated in the detergent mixing portion 20 (that is, when a predetermined amount of detergent water is collected), the collected detergent water is ejected from the washing nozzle 30 again by the ejection control portion 36. be. The detergent water ejected from the washing nozzle 30 is recovered again through the recovery port 52 . By repeating this, it is possible to wash the bathtub while circulating the detergent water.

In this example, the detergent water is recovered by activating the pump 18 provided in the detergent flow path 15. However, by providing a pump in the recovery flow path 55 and activating the pump, the detergent water can be recovered. You can collect. Alternatively, the detergent water may be collected by operating a pump provided in the washing channel 35 . That is, in the embodiment, the recovery of detergent water is performed by a pump provided in any one of the detergent channel 15 , the cleaning channel 35 and the recovery channel 55 .

An opening/closing part 60 is provided in the drainage part 115 of the bathtub 100 . The opening/closing part 60 is a drain plug that opens and closes the drain part 115 of the bathtub 100 . The opening/closing part 60 will be described later.

The control unit 40 is electrically connected to the on-off valve 16, the pump 18, the on-off valve 26, the ejection control unit 36, and the on-off valve 56, and controls the on-off valve 16, the pump 18, the on-off valve 26, the ejection control unit 36, and controls the on-off valve 56 . The controller 40 is electrically connected to the motor 32 and may control the motor 32 .

2(a) and 2(b) are a perspective view and a cross-sectional view schematically showing a drainage member of the bathtub cleaning device according to the embodiment.
As shown in FIGS. 2(a) and 2(b), the drain member 50 has a drain valve plate 510, a collection tank 520, and a drain connector 530. As shown in FIG.

The drain valve plate 510 has a plate portion 511 , a drain hole portion 512 , an upward extending portion 513 , a downward extending portion 514 and a connecting portion 515 . The plate portion 511 is a plate-like portion extending horizontally. The drain hole portion 512 is a hole penetrating the plate portion 511 in the vertical direction. The upward extending portion 513 is a portion that is provided so as to surround the drain hole portion 512 and extends upward from the upper surface of the plate portion 511 . The upwardly extending portion 513 is positioned outside the lower end of the drainage portion 115 of the bathtub 100 . In other words, the drain valve plate 510 is attached so that the lower end of the drain portion 115 of the bathtub 100 is positioned in the space surrounded by the upwardly extending portion 513 . The downward extending portion 514 is a portion that is provided so as to surround the drain hole portion 512 and extends downward from the lower surface of the plate portion 511 . The downward extending portion 514 is positioned below the lower end of the drainage portion 115 of the bathtub 100 . The connecting portion 515 is provided on the outer peripheral portion of the plate portion 511 and is a portion that connects the drain valve plate 510 to the lower portion of the waterproof pan provided below the bathtub 100 .

The recovery tank 520 has a drain pipe portion 521 , a tank portion 522 and a recovery connection portion 523 . The drain pipe portion 521 is a tubular portion that extends vertically and penetrates vertically. The tank part 522 is provided so as to surround the drain pipe part 521 and is a container-like part with an open top. The tank portion 522 functions as a recovery portion 57 that stores the detergent water recovered from the recovery port 52 . The recovery connection part 523 is a part for returning the detergent water stored in the tank part 522 between the detergent tank 10 and the washing nozzle 30 . In this example, the collection connection portion 523 is a tubular portion that is provided on the lower surface of the tank portion 522 and vertically penetrates the tank portion 522 . Note that the recovery connection portion 523 may be provided on the side surface of the tank portion 522 . Also, the recovery connection part 523 may be provided so that the opening faces downward inside the tank part 522 . The detergent water stored in the tank portion 522 is returned between the detergent tank 10 and the washing nozzle 30 via the collection connection portion 523 .

The drain connecting part 530 is a cylindrical member that extends vertically and penetrates vertically. The drain connection part 530 connects the drain part 115 of the bathtub 100 and the drain valve plate 510 . The drain connector 530 is provided inside the drain hole 512 of the drain valve plate 510 . The drainage connection part 530 is provided inside the lower end of the drainage part 115 of the bathtub 100 .

The drainage member 50 has a double pipe structure consisting of a drainage pipe portion 521 of the recovery tank 520 and a drainage connection portion 530 . The drain port 51 is a portion surrounded by the upper end of the drain pipe portion 521 . The recovery port 52 is a gap between the upper end of the drainage pipe portion 521 and the upper end of the drainage connection portion 530 . A gap between the upper end of the drain pipe portion 521 and the inner wall of the drain portion 115 of the bathtub 100 may be regarded as the recovery port 52 . The drain pipe portion 521 is positioned between the drain port 51 and the recovery port 52 . That is, the inner side of the upper end of the drain pipe portion 521 is the drain port 51 , and the outer side of the upper end of the drain pipe portion 521 is the recovery port 52 .

Thus, the recovery port 52 is provided so as to surround the drain port 51 . By providing the recovery port 52 so as to surround the drain port 51, the detergent water that has reached the drain portion 115 of the bathtub 100 first flows into the recovery port 52 outside the drain port 51, so that the detergent water can be discharged more quickly. can be recovered.

The drain port 51 and the recovery port 52 are provided at positions lower than the inner bottom surface 111 of the bathtub 100, for example. The drain port 51 and the recovery port 52 may be provided at the same height as the inner bottom surface 111 of the bathtub 100 . In other words, the upper end of the drain pipe portion 521 of the recovery tank 520 may be provided at the same height as the inner bottom surface 111 of the bathtub 100 .

In the embodiment, the recovery port 52 and the drain port 51 may be provided side by side (horizontally aligned). In other words, the drainage member 50 is not limited to having a double pipe structure. The drain member 50 may have at least a partition wall positioned between the drain port 51 and the recovery port 52 . In the example shown in FIGS. 2A and 2B, the drain pipe portion 521 corresponds to the partition wall positioned between the drain port 51 and the recovery port 52. In the example shown in FIGS. As will be described later, in the examples shown in FIGS. 13(a) and 13(b), the drain member 50 serves as a partition wall between the drain port 51 and the recovery port 52 instead of the drain pipe portion 521. It has a wall portion 53 that is positioned. Further, the shape of the drainage port 51 and the recovery port 52 in a top view is not limited to circular, and may be polygonal.

FIG. 3 is a side view schematically showing part of the drainage member of the bathtub cleaning device according to the embodiment.
FIG. 3 is a side view of the drain valve plate 510. FIG.
As shown in FIG. 3 , the drain valve plate 510 has a notch 516 in the downwardly extending portion 514 . The upper end of the notch portion 516 is, for example, the same height as the lower surface of the plate portion 511 . The upper end of the notch portion 516 may be positioned below the lower surface of the plate portion 511 . In this example, the notch portions 516 are provided at two opposing locations on the tubular downwardly extending portion 514 . The number of notches 516 may be one, or three or more.

By providing such a cutout portion 516 , the air in the tank portion 522 of the collection tank 520 can escape to the outside of the tank portion 522 through the cutout portion 516 when the detergent water is collected from the collection port 52 . As a result, when the detergent water flows into the tank part 522, there is no place for the air in the tank part 522 to escape, and the detergent water cannot flow into the tank part 522, and it is possible to prevent the collection from being hindered. . Further, when the area of the notch portion 516 increases, it becomes easier to discharge the air inside the tank portion 522 to the outside.

FIG. 4 is a perspective view schematically showing part of the drainage member of the bathtub cleaning device according to the embodiment.
4 is a perspective view of the collection tank 520. FIG.
As shown in FIG. 4, the collection tank 520 may have a vent hole 524 provided in the tank portion 522 . A vent hole 524 is provided in the upper portion of the tank portion 522 . In this example, two air holes 524 are provided. The number of air holes 524 may be one, or three or more.

By providing such a vent hole 524 , the air in the tank portion 522 can be released to the outside of the tank portion 522 through the vent hole 524 when the detergent water is recovered from the recovery port 52 . As a result, when the detergent water flows into the tank part 522, there is no place for the air in the tank part 522 to escape, and the detergent water cannot flow into the tank part 522, and it is possible to prevent the collection from being hindered. .

5 to 7 are cross-sectional views schematically showing the periphery of the drainage member of the bathtub cleaning device according to the embodiment.
As shown in FIGS. 5 to 7, the opening/closing portion 60 has a body portion 61, a first seal portion 62, and a second seal portion 63. As shown in FIG.

The body portion 61 has a lid portion 61a and a downward extension portion 61b. The lid portion 61 a is provided so as to cover the drainage portion 115 . In other words, the lid portion 61a is provided so as to overlap the drainage portion 115 in the vertical direction. The downward extending portion 61b is a tubular member extending downward from the lid portion 61a and is accommodated in the space inside the drainage portion 115 .

The first seal portion 62 is packing for closing the drain port 51 . The first seal portion 62 is provided below the downward extending portion 61b. The second seal portion 63 is a packing for blocking the drainage portion 115 . The second seal portion 63 is provided under the lid portion 61a.

A drive unit 65 is provided below the opening/closing unit 60 . The driving portion 65 is connected to the lid portion 61a. The drive unit 65 expands and contracts in the vertical direction, thereby moving the opening/closing unit 60 in the vertical direction. The driving portion 65 is connected to and held by the inner wall of the drain pipe portion 521 of the collection tank 520 .

The opening/closing part 60 can be positioned at a first position, a second position, and a third position by moving in the vertical direction. 5, 6, and 7 show the opening/closing portion 60 in the first, second, and third positions, respectively.

The second position is a position lower than the first position. The third position is a position lower than the second position. The first position is the upper end position (uppermost position) to which the opening/closing part 60 can move. The third position is the lower end position (lowest position) to which the opening/closing part 60 can move. The second position is a position (intermediate position) between the first position and the third position.

In this example, the opening/closing portion 60 is not provided with a sealing portion for closing the recovery port 52 . Therefore, in this example, regardless of the position of the opening/closing part 60, the recovery port 52 is always open. In addition, in the embodiment, the opening/closing part 60 may be provided with a sealing part for closing the recovery port 52 . In this case, the second seal portion 63 for blocking the drainage portion 115 may be omitted.

As shown in FIG. 5 , when the opening/closing portion 60 is at the first position, the drainage portion 115 is not blocked by the second seal portion 63 . Moreover, when the opening/closing part 60 is at the first position, the drain port 51 is not blocked by the first seal part 62 . Thus, in the first position, the opening/closing part 60 is in the first state (opening the drainage part 115 and opening the drainage port 51). In this first state, the liquid in bathtub 100 passes through drain portion 115 and is discharged from drain port 51 .

As shown in FIG. 6 , the drainage section 115 is not blocked by the second seal section 63 when the opening/closing section 60 is at the second position. Moreover, when the opening/closing part 60 is at the second position, the drain port 51 is closed by the first seal part 62 . Moreover, the recovery port 52 is always open regardless of the position of the opening/closing portion 60 . In this way, at the second position, the opening/closing part 60 is in the second state in which the drain part 115 is opened, the drain port 51 is closed, and the recovery port 52 is opened. In this second state, the liquid in the bathtub 100 passes through the drainage portion 115 and is recovered from the recovery port 52 without flowing to the drainage port 51 .

As shown in FIG. 7 , the drainage section 115 is closed by the second seal section 63 when the opening/closing section 60 is at the third position. Thus, at the third position, the opening/closing part 60 is in the third state in which the drainage part 115 is closed. In this third state, the liquid in bathtub 100 is stored in bathtub 100 without passing through drainage portion 115 .

Thus, in this example, the opening/closing part 60 is one opening/closing valve that moves vertically. Since the opening/closing unit 60 is configured by one opening/closing valve, switching between the first state and the second state can be performed with a simple configuration. As a result, it is possible to achieve both drainage performance and recovery performance, and to more easily improve the recovery rate of the detergent water.

When the water stored in the bathtub 100 is drained, the control unit 40 puts the opening/closing unit 60 in the first state as shown in FIG. Thereby, the water stored in the bathtub 100 can be reliably discharged from the drain port 51 .

When collecting the detergent water sprayed onto the inner wall surface 110 of the bathtub 100, the control unit 40 puts the opening/closing unit 60 in the second state as shown in FIG. As a result, it is possible to prevent the detergent water from flowing into the drain port 51 and being discharged. Therefore, the recovery rate of detergent water can be improved.

When the bath tub 100 is filled with water (hot water), the control unit 40 puts the open/close unit 60 in the third state as shown in FIG. As a result, when water is stored in bathtub 100 , it is possible to prevent water from being discharged from drainage portion 115 , so that hot water can be filled in bathtub 100 . Further, in this example, switching to the third state can also be performed by one on-off valve. As a result, it is possible to more easily improve the recovery rate of the detergent water and to easily fill the bathtub 100 with hot water while achieving both drainage performance and recovery performance.

8 to 10 are cross-sectional views schematically showing the periphery of the drainage member of the bathtub cleaning device according to the modification of the embodiment.
8, 9, and 10 show the opening/closing portion 60 in the first, second, and third positions, respectively. The opening/closing part 60 is one opening/closing valve that moves vertically.

In this example, the body portion 61 of the opening/closing portion 60 is provided with a spring 61c. The upper end of the spring 61c is connected to the lid portion 61a. A first seal portion 62 for blocking the drain port 51 is attached to the lower end of the spring 61c. The spring 61c urges the first seal portion 62 downward. By thus providing the spring 61c that biases the first seal portion 62 downward, the sealing performance of the first seal portion 62 can be improved.

The first seal portion 62 is provided so as to block the drain port 51 from above. A second seal portion 63 is attached to the body portion 61 (lid portion 61 a ) to block the drainage portion 115 . Also in this example, the opening/closing portion 60 is not provided with a sealing portion for closing the recovery port 52 . Therefore, in this example as well, regardless of the position of the opening/closing part 60, the recovery port 52 is always open.

As shown in FIG. 8, in the first position, the opening/closing part 60 is in a first state (opening the drainage part 115 and opening the drainage port 51). In this first state, the liquid in bathtub 100 passes through drain portion 115 and is discharged from drain port 51 .

As shown in FIG. 9, in the second position, the opening/closing part 60 is in the second state (opening the drain part 115, closing the drain port 51, and opening the recovery port 52). In this second state, the liquid in the bathtub 100 passes through the drainage portion 115 and is recovered from the recovery port 52 without flowing to the drainage port 51 . By urging the first seal portion 62 downward by the spring 61c, the drain port 51 can be more reliably blocked at the second position.

As shown in FIG. 10, at the third position, the opening/closing part 60 is in the third state in which the drainage part 115 is closed. In this third state, the liquid in bathtub 100 is stored in bathtub 100 without passing through drainage portion 115 .

Also in this modification, when the control unit 40 drains the water stored in the bathtub 100, as shown in FIG. Water can be reliably discharged from the drain port 51. - 特許庁When the control unit 40 collects the detergent water sprayed onto the inner wall surface 110 of the bathtub 100, as shown in FIG. It can be suppressed that it flows and is discharged. Therefore, the recovery rate of detergent water can be improved. Further, when the controller 40 fills the bathtub 100 with water (hot water), as shown in FIG. At this time, it is possible to suppress the water from being discharged from the drain part 115 and fill the bathtub 100 with hot water.

FIG. 11 is a flow chart showing the operation of the bathtub cleaning device according to the embodiment.
As shown in FIG. 11, the controller 40 can execute a main cleaning mode, a rinsing mode, and a pre-cleaning mode. A pre-cleaning mode is performed as needed and can be omitted.

When the user executes a bathtub cleaning operation using a remote control or the like (step S101), the control unit 40 drains the water in the bathtub 100 from the drain unit 115 (step S102). At this time, the control unit 40 puts the opening/closing unit 60 in the first state.

For example, the bathtub 100 is provided with a water level detector for detecting the water level inside the bathtub 100 . After a predetermined time has passed since the water level reached the lowest level detectable by the water level detection unit (or after the water level detection unit did not detect the water level), it can be considered that the water discharge has ended.

Next, the controller 40 executes the pre-cleaning mode (step S103). In the pre-washing mode, controller 40 jets detergent water or water from washing nozzle 30 toward inner wall surface 110 of bathtub 100 . During execution of the pre-cleaning mode, the control unit 40 sets the opening/closing unit 60 to the first state, and drains the liquid ejected from the cleaning nozzle 30 . When the detergent water is ejected in the pre-washing mode, the controller 40 may set the opening/closing part 60 to the second state to collect the detergent water during execution of the pre-washing mode.

Next, the controller 40 executes the main cleaning mode (step S104). In this washing mode, the controller 40 jets detergent water from the washing nozzle 30 toward the inner wall surface 110 of the bathtub 100 . During execution of the main cleaning mode, the control unit 40 sets the opening/closing unit 60 to the second state to collect the detergent water.

Next, the controller 40 executes the rinse mode (step S105). In the rinsing mode, controller 40 jets water from washing nozzle 30 toward inner wall surface 110 of bathtub 100 . During execution of the rinsing mode, the control unit 40 sets the opening/closing unit 60 to the first state to drain the liquid jetted from the cleaning nozzle 30 .

In this manner, the opening/closing unit 60 is set to the second state and the detergent water is collected during execution of the main cleaning mode, thereby suppressing the detergent water from flowing into the drain port 51 and being discharged. Therefore, the recovery rate of the detergent water can be improved, and the detergency can be improved without increasing the amount of detergent used.

FIG. 12 is a flow chart showing the operation in the main cleaning mode of the bathtub cleaning device according to the embodiment.
When the main cleaning mode is started, the control section 40 moves the opening/closing section 60 to the second position (step S201). As a result, the opening/closing unit 60 enters the second state in which the drain port 51 is closed and the recovery port 52 is opened (with the drain portion 115 opened).

Next, the control unit 40 starts ejecting detergent water from the cleaning nozzle 30 while the opening/closing unit 60 is held at the second position (step S202). As a result, the detergent water used for washing flows from the recovery port 52 through the recovery channel 55 and is temporarily stored in the recovery portion 57 . The controller 40 continues jetting until a predetermined amount of detergent water is jetted from the washing nozzle 30 (step S203: No).

When a predetermined amount of detergent water is jetted from the washing nozzle 30 (step S203: Yes), the controller 40 stops jetting the detergent water from the washing nozzle 30 (step S204). The predetermined amount of ejection is at least an amount sufficient to fill the upstream end of the collection connection portion 523 for returning the detergent water stored in the tank portion 522 between the detergent tank 10 and the washing nozzle 30 with the detergent water. is. In this example, the recovery connection portion 523 is provided on the lower surface of the tank portion 522 . Therefore, the predetermined amount of jetting is at least an amount sufficient to cover the lower surface of the tank portion 522 with the detergent water. As a result, it is possible to suppress the generation of bubbles due to air entering the recovery passageway 55 when the detergent water is recovered. The predetermined amount of ejection is equal to or less than the volume of the detergent mixing section 20 . The controller 40 calculates the amount of detergent water ejected from the washing nozzle 30 based on the output and driving time of the ejection controller 36 (pump). The control unit 40 calculates the amount of detergent water ejected from the washing nozzle 30 based on the water level of the detergent water in the detergent mixing unit 20 detected by the water level detection unit 21 provided in the detergent mixing unit 20. good too.

Next, the control unit 40 operates the recovery pump while holding the opening/closing unit 60 at the second position (step S205). The recovery pump is, for example, pump 18 . As a result, the detergent water stored in the recovery portion 57 is recovered from the recovery connection portion 523 . The controller 40 continues to operate the recovery pump until a predetermined amount of detergent water is recovered (step S206: No).

When a predetermined amount of detergent water has been recovered (step S206: Yes), the control unit 40 stops the operation of the recovery pump (step S207). The predetermined amount to be collected is approximately the difference between the amount of detergent water ejected in step S202 and the volume of the recovery passageway 55 . The controller 40 calculates the amount of detergent water collected from the collection port 52 based on the output and drive time of the collection pump. When the collected detergent water is stored in the detergent mixing portion 20, the control portion 40 controls the level of the detergent water in the detergent mixing portion 20 detected by the water level detection portion 21 provided in the detergent mixing portion 20. , the amount of detergent water collected from the collection port 52 may be calculated.

The control unit 40 repeats steps S202 to S207 until the number of jets of detergent water from the washing nozzle 30 reaches a predetermined number (step S208: No). The predetermined number of times is, for example, three times. The predetermined number of times can be appropriately changed according to the concentration of the detergent water, the jetting flow rate, and the like.

When the washing nozzle 30 spouts the detergent water a predetermined number of times (step S208: Yes), the controller 40 starts the washing nozzle 30 to spout the detergent water while holding the opening/closing part 60 at the second position. (step S209). The controller 40 continues jetting until a predetermined amount of detergent water is jetted from the washing nozzle 30 (step S210: No).

When a predetermined amount of detergent water is jetted from the washing nozzle 30 (step S210: Yes), the controller 40 stops jetting the detergent water from the washing nozzle 30 (step S211). At this time, the amount of detergent water ejected from the washing nozzle 30 is made larger than the amount of detergent water ejected in step S202. As a result, the detergent water in the recovery channel 55 can be used up.

FIG. 13 is a flow chart showing a modification of the operation in the main cleaning mode of the bathtub cleaning device according to the embodiment.
In this example, the position (state) of the opening/closing portion 60 at the start of jetting of detergent water is different from the flowchart shown in FIG. When the main cleaning mode is started, the control section 40 moves the opening/closing section 60 to the third position (step S301). As a result, the open/close unit 60 enters the third state in which the drainage unit 115 is closed. By starting the ejection of the detergent water from the washing nozzle 30 in this state (step S302), the detergent water used for washing is temporarily stored in the bathtub 100 without being collected from the collection port 52.例文帳に追加

When a predetermined amount of detergent water is jetted from the washing nozzle 30 (step S303: Yes), the controller 40 stops jetting the detergent water from the washing nozzle 30 (step S304), and moves the opening/closing part 60 to the second position. Move (step S305). As a result, the opening/closing unit 60 enters the second state in which the drain port 51 is closed and the recovery port 52 is opened (with the drain portion 115 opened). The detergent water stored in the bathtub 100 flows into the recovery port 52 by switching the opening/closing part 60 from the third state to the second state. At this time, if necessary, the user may wait for a predetermined time until the detergent water splashed on the inner wall surface 112 of the bathtub 100 flows to the inner bottom surface 111 of the bathtub 100 .

Next, the control unit 40 operates the recovery pump while holding the opening/closing unit 60 at the second position (step S306). As a result, the detergent water stored in bathtub 100 is recovered from recovery port 52 . Steps after step S306 (steps S307 to S312) are substantially the same as steps S206 to S211 in the flowchart shown in FIG.

In this manner, the detergent water used for washing can be temporarily stored in the bathtub 100 by jetting the detergent water from the washing nozzle 30 while the opening/closing part 60 is held at the third position. By activating the recovery pump while the opening/closing part 60 is held at the second position, recovery of the detergent water stored in the bathtub 100 can be started. Thereby, the detergent water can be circulated while maintaining the state where the recovery port 52 is filled with the detergent water. Therefore, even without providing the recovery part 57, it is possible to prevent the recovery pump from sucking air and generating bubbles when the detergent water is circulated. can be made simple and compact.

FIG. 14 is a flow chart showing a modification of the operation in the main cleaning mode of the bathtub cleaning device according to the embodiment.
In this example, the state of the on-off valve 56 provided in the recovery flow path 55 is different from the flowchart shown in FIG. It should be noted that the on-off valve 56 is open in step S201 of the flow chart shown in FIG.

When the main cleaning mode is started, the controller 40 moves the opening/closing part 60 to the second position and closes the opening/closing valve 56 (step S401). As a result, the opening/closing unit 60 enters the second state in which the drain port 51 is closed and the recovery port 52 is opened (with the drain portion 115 opened). On the other hand, by closing the on-off valve 56, the recovery channel 55 can be closed. In this state, the washing nozzle 30 starts ejecting the detergent water (step S402), so that the detergent water used for washing is discharged from the collection port 52 of the collection channel 55 to the on-off valve 56 and inside the bathtub 100. temporarily stored in

When a predetermined amount of detergent water is jetted from the washing nozzle 30 (step S403: Yes), the controller 40 stops jetting the detergent water from the washing nozzle 30 (step S404), and opens the on-off valve 56 ( step S405). When the on-off valve 56 is opened from closed, the detergent water stored between the recovery port 52 and the on-off valve 56 in the recovery channel 55 and in the bathtub 100 can flow downstream of the on-off valve 56 . be possible.

Next, the controller 40 operates the recovery pump while keeping the on-off valve 56 open (step S406). As a result, the detergent water stored between the recovery port 52 and the open/close valve 56 in the recovery channel 55 flows downstream of the open/close valve 56 and is recovered, and the detergent stored in the bathtub 100 is recovered. Water is recovered from the recovery port 52 . Steps after step S406 (steps S407 to S412) are substantially the same as steps S206 to S211 in the flowchart shown in FIG.

In this manner, the detergent water used for washing is temporarily stored in the bathtub 100 by jetting the detergent water from the washing nozzle 30 while the opening/closing portion 60 is held in the second state and the opening/closing valve 56 is kept closed. be able to. By activating the recovery pump while the on-off valve 56 is kept open, recovery of the detergent water stored in the bathtub 100 can be started. Thereby, the detergent water can be circulated while maintaining the state where the recovery port 52 is filled with the detergent water. Therefore, even without providing the recovery part 57, it is possible to prevent the recovery pump from sucking air and generating bubbles when the detergent water is circulated. can be made simple and compact.

15(a) and 15(b) are cross-sectional views schematically showing the periphery of a drainage member of a bathtub cleaning device according to a modification of the embodiment.
As shown in FIGS. 15A and 15B , the opening/closing part 60 may be one opening/closing valve 70 that rotates between the drain port 51 and the recovery port 52 .

The on-off valve 70 has a first lid portion 71 , a second lid portion 72 and a shaft portion 73 . The first lid portion 71 is a plate-like member for closing the drain port 51 and has one side connected to the shaft portion 73 . The second lid portion 72 is a plate-like member for closing the recovery port 52 and has one side connected to the shaft portion 73 . The angle (minor angle) between the first lid portion 71 and the second lid portion 72 is 90 degrees or more and less than 180 degrees. In this example, the angle (minor angle) between the first lid portion 71 and the second lid portion 72 is 90 degrees. The shaft portion 73 is provided along the wall portion 53 on the wall portion 53 of the drain member 50 located between the drain port 51 and the recovery port 52 .

15(a) and 15(b) show the first state and the second state of the on-off valve 70, respectively. In this example, as shown in FIG. 15A, the on-off valve 70 opens the drain port 51 and closes the recovery port 52 in the first state. On the other hand, as shown in FIG. 15B, the on-off valve 70 closes the drain port 51 and opens the recovery port 52 in the second state.

Thus, by providing the on-off valve 70 that opens the drain port 51 and closes the recovery port 52 in the first state, the drain port 51 is opened and closed when the water stored in the bathtub 100 is drained. The recovery port 52 can be closed. As a result, it is possible to prevent the water from flowing into the recovery port 52 while ensuring that the water is discharged from the drain port 51 . Therefore, it is possible to prevent the dirt contained in the water stored in the bathtub 100 from clogging the recovery channel 55 and the cleaning channel 35 through the recovery port 52, thereby reducing the recovery rate of the detergent water.

When the water stored in the bathtub 100 is drained, the control unit 40 puts the on-off valve 70 in the first state as shown in FIG. 15(a). Thereby, the water stored in the bathtub 100 can be discharged from the drain port 51 .

When collecting the detergent water sprayed onto the inner wall surface 110 of the bathtub 100, the control unit 40 puts the on-off valve 70 in the second state as shown in FIG. 15(b). As a result, the detergent water is prevented from flowing into the drain port 51 when the detergent water is collected, and the detergent water recovery rate can be improved.

In this example, the on-off valve 70 does not enter the third state in which the drain port 51 is closed and the recovery port 52 is closed. Therefore, in this example, when filling the bathtub 100 with water (hot water), the control unit 40 sets the on-off valve 70 to the second state as shown in FIG. The on-off valve 56 provided in the recovery channel 55 is closed. As a result, the drain port 51 is closed and the recovery channel 55 is closed, so that hot water can be poured into the bathtub 100 .

Also, in this example, the detergent water used for washing can be temporarily stored in the bathtub 100 and collected along the flow chart shown in FIG.

The embodiments of the present invention have been described above. However, the invention is not limited to these descriptions. Appropriate design changes made by those skilled in the art with respect to the above embodiments are also included in the scope of the present invention as long as they have the features of the present invention. For example, the shape, size, material, arrangement, and the like of each element included in the bathtub cleaning device are not limited to those illustrated and can be changed as appropriate.
Moreover, each element provided in each of the above-described embodiments can be combined as long as it is technically possible, and a combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

10 Detergent Tank 11 Water Level Detector 15 Detergent Channel 16 On-Off Valve 17 Flow Control Part 18 Pump 19 Backflow Preventer 20 Detergent Mixer 21 Water Level Detector 25 Water Supply Channel 26 On-Off Valve 27 flow rate adjusting unit 30 cleaning nozzle 32 motor 35 cleaning channel 36 ejection control unit 37 backflow prevention unit 40 control unit 50 drainage member 51 drainage port 52 recovery port 53 wall 55 recovery flow path 56 on-off valve 57 recovery part 60 on-off part 61 body part 61a cover part 61b downwardly extending part 61c spring 62 first seal part 63 second seal part 65 driving part 70 on-off valve 71 First lid portion 72 Second lid portion 73 Shaft portion 80 Filter 100 Bathtub 110 Inner wall surface 111 Inner bottom surface 112 Inner wall surface 115 Drainage unit 135 Detergent inlet 200 Bathtub cleaning device 510 Drainage valve plate, 511 plate portion, 512 drainage hole portion, 513 upwardly extending portion, 514 downwardly extending portion, 515 connection portion, 516 notch portion, 520 recovery tank, 521 drainage pipe portion, 522 tank portion, 523 recovery connection portion, 524 vent, 530 drain connection, WS water supply

Claims (8)

a detergent tank for storing detergent;
a detergent mixing unit that mixes the detergent supplied from the detergent tank and the water supplied from the water supply source to generate detergent water;
a washing nozzle for ejecting the detergent water toward the inner wall surface of the bathtub;
a washing channel connecting the detergent mixing unit and the washing nozzle;
a drainage member provided in the drainage portion of the bathtub and having a drainage port and a collection port opening at the drainage portion;
a recovery channel for returning the detergent water recovered from the recovery port to between the detergent tank and the cleaning nozzle;
an opening/closing unit having a first state in which the drain port is opened and a second state in which the drain port is closed and the recovery port is opened;
a control unit that controls the opening/closing unit;
with
The control unit
setting the opening/closing portion to the first state when water stored in the bathtub is drained;
The bathtub cleaning device, wherein the opening/closing portion is placed in the second state when the detergent water sprayed onto the inner wall surface of the bathtub is collected. The opening/closing unit is one opening/closing valve that moves in the vertical direction,
2. The bathtub cleaning apparatus according to claim 1, wherein said on-off valve is in said first state at a first position, and is in said second state at a second position lower than said first position. 3. The bathtub cleaning apparatus according to claim 2, wherein said on-off valve is in a third state in which said drain portion is closed at a third position lower than said second position. a detergent channel connecting the detergent tank and the detergent mixing unit;
a pump provided in any one of the detergent channel, the cleaning channel, and the recovery channel;
further comprising
The control unit is capable of executing a main cleaning mode in which the detergent water is jetted from the cleaning nozzle,
In the main cleaning mode, the controller causes the cleaning nozzle to eject the detergent water while the opening/closing part is held at the third position, and when a predetermined amount of the detergent water is ejected from the cleaning nozzle, 4. The bathtub washing apparatus according to claim 3, wherein said pump is operated with said open/close portion held at said second position to start collecting said detergent water. The bathtub cleaning device according to any one of claims 2 to 4, wherein the recovery port is provided so as to surround the drain port. The opening/closing unit is one opening/closing valve that rotates between the drain port and the recovery port,
2. The bathtub cleaning apparatus according to claim 1, wherein said on-off valve opens said drain port and closes said recovery port in said first state. a detergent channel connecting the detergent tank and the detergent mixing unit;
an on-off valve provided in the recovery channel and configured to open and close the recovery channel by the control unit;
a pump provided in any one of the detergent channel, the cleaning channel, and the recovery channel;
further comprising
The control unit is capable of executing a main cleaning mode in which the detergent water is jetted from the cleaning nozzle,
In the main cleaning mode, the control unit causes the cleaning nozzle to eject the detergent water in a state in which the opening/closing unit is held in the second state and the opening/closing valve is closed, and a predetermined amount of the detergent is ejected from the cleaning nozzle. The bathtub cleaning method according to any one of claims 1 to 3 , characterized in that when the water is jetted out, the pump is operated while the on-off valve is held open to start collecting the detergent water. Device.
The bathtub cleaning device according to any one of claims 1 to 7, further comprising a recovery unit provided in the recovery channel for storing the detergent water recovered from the recovery port.

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