JP2020096665A - Bathtub washing device - Google Patents

Abstract

To provide a bathtub washing device capable of improving a detergent water recovery ratio in a recovery type bathtub washing device.SOLUTION: A bathtub washing device includes: a detergent tank for storing detergent; a detergent mixing part for mixing detergent supplied from the detergent tank with water supplied from a water supply source, and generating detergent water; a washing nozzle for jetting detergent water to an inner wall surface of the bathtub; a washing flow channel for connecting the detergent mixing part to the washing nozzle; a drain member being provided on a drain part of the bathtub including a drain port and a recovery port that are opened at the drain part; a recovery flow channel to return the detergent water recovered from the recovery port to between the detergent tank and the washing nozzle; an opening/closing part that has a first state in which the drain port is open, and a second state in which the drain port is closed and the recovery port is open; and a control part for controlling the opening/closing part. The control part brings the opening/closing part into a first state when draining water stored in the bathtub, and brings the opening/closing part into a second state when recovering detergent water jetted to the inner wall surface of the bathtub.SELECTED DRAWING: Figure 6

Description

Aspects of the invention generally relate to bath cleaning devices.

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

Japanese Patent No. 3204742 JP, 2013-9853, A

2. Description of the Related Art Conventionally, there is known a bathtub cleaning device that cleans an inner wall surface of a bathtub by ejecting a detergent water diluted with water from a nozzle toward an inner wall surface of the bathtub or the like. For example, in the bathtub cleaning device of Patent Document 1, the detergent water ejected from the nozzle toward the inside of the bathtub is collected and stored in a water storage tank, and the circulation pump operates to suck the detergent water in the water storage tank into the bathtub. Circulation cleaning is performed by re-spouting. In the configuration (recovery type) in which the detergent water ejected from the nozzle toward the inside of the bathtub is collected and the collected detergent water is ejected from the nozzle toward the inside of the bathtub again as in Patent Document 1, the entire inside of the bathtub It is possible to reduce the consumption of detergent water while enabling the washing.

However, in the case where the drain port and the recovery port are formed apart from each other as in Patent Document 1, if an inclined shape is provided on the inner bottom surface of the bathtub toward the drain port in order to secure the drainage performance, the recovery is performed. The performance cannot be ensured, and on the other hand, if a slanted shape is provided on the inner bottom surface of the bathtub toward the recovery port in order to ensure the recovery performance, there is a problem that the drainage performance cannot be ensured.

Therefore, in the recovery-type bathtub cleaning device, a configuration in which the recovery port and the drainage port are close to each other as in Patent Document 2 can be considered. In the configuration of Patent Document 2, the drainage section has a double-pipe structure having a drainage port and a recovery port, so that the drainage port and the recovery port allow the outside of water inside the bathtub to be used while using one drainage unit. It is possible to both drain water to the tank and collect the detergent water in the water tank.

Here, in order to further improve the detergency without increasing the amount of the 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 opened when the detergent water is collected, the detergent water to be collected is not the collection port but the drain port depending on the amount of the detergent water and the flow path state on the collection side. There is a risk that it will be discharged from the flow path on the drain side.

The present invention has been made based on the recognition of such a problem, and an object of the present invention is to provide a bathtub cleaning device of a recovery type that can improve the recovery rate of detergent water.

A first aspect of the present invention is a detergent tank that stores detergent, a detergent mixing unit that generates detergent water by mixing detergent supplied from the detergent tank and water supplied from a water supply source, and a bath for the detergent water. A cleaning nozzle that ejects toward the inner wall surface of the, a cleaning flow path that connects the detergent mixing section and the cleaning nozzle, a drain port provided in the drain section of the bath, and a drain port and a recovery port that open in the drain section. A drainage member, a recovery flow path for returning the detergent water recovered from the recovery port between the detergent tank and the cleaning nozzle, a first state in which the drainage port is opened, and the drainage An opening/closing unit having a second state in which the mouth is closed and the recovery port is opened, and a control unit for controlling the opening/closing unit, wherein the control unit discharges water stored in the bathtub. In the bathtub cleaning device, the opening/closing part is set to the first state, and the opening/closing part is set to the second state when the detergent water sprayed on the inner wall surface of the bathtub is collected. ..

According to this bathtub cleaning device, the drainage member has the drainage port that is opened in the drainage section of the bathtub (that is, is provided at a position close to each other) and the recovery port, thereby achieving both the drainage performance and the recovery performance. You can Further, when the water stored in the bathtub is drained, the water stored in the bathtub can be reliably discharged by setting the opening/closing portion to the first state (the drain port is opened). When the detergent water jetted to the wall surface is collected, the opening/closing portion is set to the second state (the drain port is closed and the collection port is opened), whereby the detergent water can be suppressed from flowing to the drain port and discharged. This makes it possible to improve both the drainage performance and the recovery performance and improve the detergent water recovery rate. Therefore, the cleaning power can be improved without increasing the amount of detergent used.

2nd invention is 1st invention, Comprising: The said opening-and-closing part is one on-off valve which moves to an up-down direction, The said on-off valve becomes the said 1st state in a 1st position, and from the said 1st position. In the bathtub cleaning device, the second state is set in a second position which is also lower than the above.

According to this bathtub cleaning device, since the opening/closing part is configured by one opening/closing valve, it is possible to switch between the first state and the second state with a simple configuration. This makes it possible to improve both the drainage performance and the recovery performance and more easily improve the recovery rate of the detergent water.

A third aspect of the invention is the bathtub cleaning apparatus according to the second aspect of the invention, in which the opening/closing valve is in a third state in which the drainage section is closed at a third position lower than the second position. ..

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

4th invention is provided in the detergent flow path which connects the said detergent tank and the said detergent mixing part in 3rd invention, and any one of the said detergent flow path, the said cleaning flow path, and the said recovery flow path. And a pump, wherein the controller is capable of executing a main cleaning mode in which the detergent water is ejected from the cleaning nozzle, and the controller controls the opening/closing part to the third position in the main cleaning mode. The detergent water is ejected from the cleaning nozzle in a state of being held at a predetermined temperature, and when a predetermined amount of the detergent water is ejected from the cleaning nozzle, the pump is operated while the opening/closing portion is retained at the second position. The bath cleaning device is characterized in that the collection 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. Then, by operating the pump with the opening/closing portion held at the second position, the collection of the detergent water stored in the bath can be started. As a result, the detergent water can be circulated while maintaining the state where the recovery port is filled with the detergent water. Therefore, it is possible to suppress the generation of bubbles by sucking air when the detergent water is circulated without providing a recovery section, and the shapes of the recovery channel, the drainage member, the detergent mixing section, etc. can be made simple and compact. ..

A fifth invention is the bath cleaning apparatus according to any one of the second to fourth inventions, characterized in that the recovery port is provided so as to surround the drainage port.

According to this bathtub cleaning device, by providing the recovery port so as to surround the drainage port, the detergent water reaching the drainage part of the bathtub first flows into the recovery port on the outside of the drainage port, so that the detergent water is more effectively collected. It can be collected quickly.

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

According to this bathtub cleaning device, by providing the opening/closing 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. The mouth can be closed. As a result, it is possible to reliably discharge the water from the drain port, while suppressing the flow of water to the recovery port. Therefore, it is possible to prevent the collection rate of the detergent water from decreasing due to the dirt contained in the water stored in the bathtub clogging the collection channel and the washing channel through the collection port.

7th invention is provided in the detergent flow path which connects the said detergent tank and the said detergent mixing part, and the said collection|recovery flow path in any one of 1st-6th invention, Comprising: The said recovery part by the said control part. An opening/closing valve that opens and closes a flow path, and a pump provided in any of the detergent flow path, the cleaning flow path, and the recovery flow path are further provided, and the control unit supplies the detergent water from the cleaning nozzle. A main cleaning mode for spraying can be executed, and in the main cleaning mode, the control unit sprays the detergent water from the cleaning nozzle with the opening/closing section in the second state and the opening/closing valve held closed. When a predetermined amount of the detergent water is ejected from the cleaning nozzle, the pump is operated with the on-off valve held open to start collecting the detergent water. is there.

According to this bathtub cleaning device, the detergent water used for cleaning is temporarily stored in the bathtub by ejecting the detergent water from the cleaning nozzle with the opening/closing portion in the second state and the opening/closing valve kept closed. be able to. Then, by operating the pump with the on-off valve held open, the collection of the detergent water stored in the bath can be started. As a result, the detergent water can be circulated while maintaining the state where the recovery port is filled with the detergent water. Therefore, it is possible to suppress the generation of bubbles by sucking air when the detergent water is circulated without providing a recovery section, and the shapes of the recovery channel, the drainage member, the detergent mixing section, etc. can be made simple and compact. ..

An eighth invention is characterized in that, in any one of the first to seventh inventions, it further comprises a recovery section which is provided in the recovery channel and stores the detergent water recovered from the recovery port. It is a bath cleaning device.

According to this bathtub cleaning device, by providing the recovery part for storing the detergent water recovered from the recovery port, the detergent water can be circulated while maintaining the inside of the recovery channel pipe filled with the liquid. .. As a result, it is possible to prevent bubbles from being generated by the pump sucking air when circulating the detergent water.

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

It is an explanatory view showing typically a bath cleaning device concerning an embodiment. FIG. 2A and FIG. 2B are a perspective view and a cross-sectional view schematically showing the drainage member of the bath cleaning apparatus according to the embodiment. It is a side view which represents typically some drainage members of the bathtub cleaning apparatus which concerns on embodiment. It is a perspective view which represents typically some drainage members of the bathtub cleaning apparatus which concerns on embodiment. It is sectional drawing which represents typically the drain member periphery of the bathtub cleaning apparatus which concerns on embodiment. It is sectional drawing which represents typically the drain member periphery of the bathtub cleaning apparatus which concerns on embodiment. It is sectional drawing which represents typically the drain member periphery of the bathtub cleaning apparatus which concerns on embodiment. It is sectional drawing which represents typically the drain member periphery of the bath cleaning apparatus which concerns on the modification of embodiment. It is sectional drawing which represents typically the drain member periphery of the bath cleaning apparatus which concerns on the modification of embodiment. It is sectional drawing which represents typically the drain member periphery of the bath cleaning apparatus which concerns on the modification of embodiment. It is a flowchart showing operation|movement of the bathtub cleaning apparatus which concerns on embodiment. It is a flow chart showing operation in the main washing mode of the bathtub washing device concerning an embodiment. It is a flowchart showing the modification of operation|movement in the main cleaning mode of the bathtub cleaning apparatus which concerns on embodiment. It is a flowchart showing the modification of operation|movement in the main cleaning mode of the bathtub cleaning apparatus which concerns on embodiment. FIG. 15A and FIG. 15B are cross-sectional views schematically showing the vicinity of the drainage member of the bathtub cleaning device according to the modification of the embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same components are designated by the same reference numerals, and detailed description thereof will be appropriately omitted.

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

The detergent tank 10 is connected to a detergent input port 135 provided on the upper surface of the rim of the bath 100, and stores the 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 with the water supplied from the water supply source WS to generate detergent water. The term "water" used in the present specification 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 ejecting the detergent water from the cleaning nozzle 30 and stores the water when ejecting the water from the cleaning nozzle 30. The detergent mixing unit 20 is provided with a water level detection unit 21 such as a float switch. The detergent mixing section 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 flow path 15 is provided with an open/close valve 16, a flow rate adjusting unit 17, a pump 18, and a backflow prevention unit 19.

The open/close valve 16 is, for example, a solenoid valve. The open/close valve 16 controls the supply of the detergent to the detergent mixing unit 20. By opening the open/close valve 16, the detergent stored in the detergent tank 10 is supplied to the detergent mixing section 20. By closing the opening/closing valve 16, the supply of the detergent from the detergent tank 10 to the detergent mixing section 20 is stopped.

The flow rate adjusting unit 17 is provided downstream of the on-off valve 16. The flow rate adjusting unit 17 is, for example, an orifice. The flow rate adjusting unit 17 adjusts the flow rate of the detergent flowing through the detergent flow path 15. The flow rate adjusting unit 17 is provided as necessary and can be omitted. The “downstream” in the detergent flow path 15 is the downstream (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 opening/closing valve 16 and the flow rate adjusting unit 17. The pump 18 feeds the detergent in the detergent flow path 15 to the detergent mixing section 20.

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

A water supply passage 25 is provided between the water supply source WS and the detergent mixing section 20. The water supply flow path 25 connects the water supply source WS and the detergent mixing unit 20. An opening/closing valve 26 and a flow rate adjusting unit 27 are provided in the water supply passage 25.

The open/close valve 26 is, for example, a solenoid valve. The open/close valve 26 controls the supply of water to the detergent mixing section 20. By opening the open/close valve 26, the water from the water supply source WS is supplied to the detergent mixing section 20. By closing the opening/closing valve 26, the supply of water from the water supply source WS to the detergent mixing section 20 is stopped.

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

The cleaning nozzle 30 is provided on the inner wall surface 110 of the bath 100. More specifically, the cleaning nozzle 30 is provided on the inner bottom surface 111 located at the lowermost part of the inner wall surface 110 of the bath 100, or on the inner wall surface 112 located above the inner bottom surface 111. The cleaning nozzle 30 ejects liquid (detergent water or water) toward the inner wall surface 110 (inner wall surface 112) of the bathtub 100. The cleaning nozzle 30 is provided so as to be rotatable about a vertical axis (that is, horizontally) by a motor 32.

A cleaning flow path 35 is provided between the detergent mixing unit 20 and the cleaning nozzle 30. The cleaning flow path 35 connects the detergent mixing unit 20 and the cleaning nozzle 30. A jet control unit 36 and a backflow prevention unit 37 are provided in the cleaning flow path 35.

The ejection control unit 36 controls ejection of the liquid from the cleaning nozzle 30. The ejection control unit 36 is provided downstream of the detergent mixing unit 20. The ejection control unit 36 is, for example, a pump. The ejection control unit 36 may be an opening/closing valve such as a solenoid valve. In this case, the detergent mixing unit 20 is provided with a pressure-feeding unit that pressure-feeds the liquid to the cleaning nozzle 30, such as using a Venturi tube or increasing the position of the detergent mixing unit 20 when the tank is a tank to increase the head pressure. The “downstream” in the cleaning flow path 35 is the downstream (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 unit 37 is provided downstream of the ejection control unit 36. The backflow prevention unit 37 suppresses backflow of detergent water, water, drainage, etc. from the washing nozzle 30 to the detergent mixing unit 20. The check valve 37 is, for example, a check valve. The backflow prevention unit 37 may be an opening/closing valve such as a solenoid valve. A plurality of backflow prevention units 37 may be provided.

The inner bottom surface 111 of the bath 100 is provided with a drain 115 for discharging the liquid in the bath 100. The drainage portion 115 is a tubular portion that extends downward from the inner bottom surface 111 and penetrates in the up-down direction. The inner bottom surface 111 of the bath 100 is inclined downward toward the drain 115. By providing such a downward inclination, the liquid in the bath 100 can be guided to the drain portion 115 along the inner bottom surface 111.

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

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

The bath 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 passageway 55 is connected to the drainage unit 115 (recovery port 52). The other end of the recovery channel 55 is connected to the detergent channel 15, the detergent mixing section 20, or the cleaning channel 35. When the detergent mixing section 20 is a Venturi tube, the other end of the recovery passageway 55 is connected to the washing passageway 35. An opening/closing valve 56 is provided in the recovery passageway 55. The open/close valve 56 is, for example, a solenoid valve.

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

The recovery passage 55 is provided with a recovery unit 57 that stores the detergent water recovered from the recovery port 52. By providing such a recovery unit 57, it is possible to circulate the detergent water while maintaining the inside of the recovery channel 55 filled with the liquid. This can prevent the pump 18 from sucking air and generating bubbles when circulating the detergent water.

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

The detergent water recovered from the recovery port 52 passes through the recovery passageway 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 collected in the detergent mixing unit 20 (that is, when a predetermined amount of the detergent water is collected), the collected detergent water is jetted again from the washing nozzle 30 by the jet control unit 36. It The detergent water ejected from the cleaning nozzle 30 is recovered again from the recovery port 52. By repeating this, the bath water can be washed while circulating the detergent water.

In this example, the detergent water is collected by operating the pump 18 provided in the detergent channel 15. However, a pump is provided in the recovery channel 55 and the pump 18 is activated to operate the detergent water. You may collect. Further, the detergent water may be collected by operating a pump provided in the cleaning flow path 35. That is, in the embodiment, the detergent water is collected by the pump provided in any of the detergent channel 15, the cleaning channel 35, and the recovery channel 55.

An opening/closing unit 60 is provided in the drainage unit 115 of the bathtub 100. The opening/closing part 60 is a drain plug that opens/closes the drain part 115 of the bath 100. The opening/closing unit 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 the on-off valve 16, the pump 18, the on-off valve 26, the ejection control unit 36, And the on-off valve 56. The control unit 40 is electrically connected to the motor 32 and may control the motor 32.

FIG. 2A and FIG. 2B are a perspective view and a cross-sectional view that schematically show the drainage member of the bath cleaning apparatus according to the embodiment.
As shown in FIGS. 2A and 2B, the drainage member 50 includes a drainage valve plate 510, a recovery tank 520, and a drainage connection portion 530.

The drain valve plate 510 has a plate portion 511, a drain hole portion 512, an upper extension portion 513, a lower extension portion 514, and a connection portion 515. The plate portion 511 is a plate-shaped portion that extends in the horizontal direction. The drainage hole portion 512 is a hole that vertically penetrates the plate portion 511. The upper extending portion 513 is a portion that is provided so as to surround the drainage hole portion 512 and extends upward from the upper surface of the plate portion 511. The upper extension part 513 is located outside the lower end of the drainage part 115 of the bathtub 100. In other words, the drain valve plate 510 is attached such that the lower end of the drain 115 of the bath 100 is located in the space surrounded by the upper extension 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 located below the lower end of the drainage portion 115 of the bathtub 100. The connection portion 515 is a portion that is provided on the outer peripheral portion of the plate portion 511 and that connects the drain valve plate 510 to the lower portion of the waterproof pan provided below the bath 100.

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

The drainage connection portion 530 is a tubular member that extends in the vertical direction and penetrates in the vertical direction. The drain connection 530 connects the drain 115 of the bath 100 and the drain valve plate 510. The drainage connection portion 530 is provided inside the drainage hole portion 512 of the drainage valve plate 510. The drain connection 530 is provided inside the lower end of the drain 115 of the bath 100.

The drainage member 50 has a double pipe structure including a drainage pipe portion 521 of the recovery tank 520 and a drainage connection portion 530. The drainage port 51 is a portion surrounded by the upper end of the drainage pipe portion 521. The recovery port 52 is a gap between the upper end of the drain pipe part 521 and the upper end of the drain connection part 530. The gap between the upper end of the drain pipe 521 and the inner wall of the drain 115 of the bath 100 may be regarded as the recovery port 52. The drain pipe portion 521 is located between the drain port 51 and the recovery port 52. That is, the inside of the upper end of the drain pipe portion 521 is the drain port 51, and the outside of the upper end of the drain pipe portion 521 is the recovery port 52.

In this way, the recovery port 52 is provided so as to surround the drainage port 51. By providing the recovery port 52 so as to surround the drain port 51, the detergent water reaching the drain section 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 drainage port 51 and the recovery port 52 are provided, for example, at a position lower than the inner bottom surface 111 of the bath 100. The drain port 51 and the recovery port 52 may be provided at the same height as the inner bottom surface 111 of the bath 100. In other words, the upper end of the drain pipe 521 of the recovery tank 520 may be provided at the same height as the inner bottom surface 111 of the bath 100.

In addition, in the embodiment, the recovery port 52 and the drain port 51 may be provided side by side (side by side in the horizontal direction). In other words, the drainage member 50 is not limited to one having a double pipe structure. The drain member 50 may have at least a partition wall located 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 located between the drain port 51 and the recovery port 52. As will be described later, in the example shown in FIGS. 13A and 13B, the drain member 50 serves as a partition wall between the drain port 51 and the recovery port 52 instead of the drain pipe 521. It has a wall 53 located. Moreover, the shapes of the drainage port 51 and the recovery port 52 in a top view are not limited to circular shapes, and may be polygonal shapes.

FIG. 3 is a side view schematically showing a part of the drainage member of the bath cleaning apparatus according to the embodiment.
FIG. 3 is a side view of the drain valve plate 510.
As shown in FIG. 3, the drain valve plate 510 has a cutout portion 516 in the lower extension portion 514. The upper end of the cutout portion 516 has, for example, the same height as the lower surface of the plate portion 511. The upper end of the cutout portion 516 may be located below the lower surface of the plate portion 511. In this example, the cutout portions 516 are provided at two opposing positions of the cylindrical downward extending portion 514. The number of the cutout portions 516 may be one, or may be three or more.

By providing the cutout portion 516, the air in the tank portion 522 of the recovery tank 520 can be released to the outside of the tank portion 522 by the cutout portion 516 when the detergent water is collected from the collection port 52. Accordingly, when the detergent water flows into the tank portion 522, there is no place where the air in the tank portion 522 escapes, the detergent water cannot flow into the tank portion 522, and it is possible to prevent the collection water from being hindered. .. Further, when the area of the cutout portion 516 is increased, the air in the tank portion 522 is easily discharged to the outside.

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

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

5 to 7 are cross-sectional views schematically showing the vicinity of the drain member of the bath cleaning apparatus according to the embodiment.
As shown in FIGS. 5 to 7, the opening/closing portion 60 has a main body portion 61, a first seal portion 62, and a second seal portion 63.

The main body portion 61 has a lid portion 61a and a downward extending portion 61b. The lid 61a is provided so as to cover the drain 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 that extends downward from the lid portion 61a, and is housed in the space inside the drainage portion 115.

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

A drive unit 65 is provided below the opening/closing unit 60. The drive section 65 is connected to the lid section 61a. The drive unit 65 expands and contracts in the vertical direction to move the opening/closing unit 60 in the vertical direction. The drive unit 65 is connected to and held by the inner wall of the drain pipe 521 of the recovery tank 520.

The opening/closing part 60 can be located at the first position, the second position, and the third position by moving in the vertical direction. 5, 6, and 7 show the states in which the opening/closing part 60 is in the first position, the second position, and the third position, 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 a position (uppermost position) at the upper end where the opening/closing part 60 can move. The third position is a lower end position (lowermost position) where 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 part 60 is not provided with a seal part for closing the recovery port 52. Therefore, in this example, the recovery port 52 is always open regardless of the position of the opening/closing unit 60. In the embodiment, the opening/closing section 60 may be provided with a seal section for closing the recovery port 52. In this case, the second seal part 63 for closing the drainage part 115 may be omitted.

As shown in FIG. 5, when the opening/closing part 60 is in the first position, the drainage part 115 is not blocked by the second seal part 63. Further, when the opening/closing part 60 is in the first position, the drain port 51 is not blocked by the first seal part 62. Thus, in the first position, the opening/closing section 60 is in the first state in which the drainage port 115 is opened (and the drainage section 115 is opened). In the first state, the liquid in the bath 100 passes through the drainage section 115 and is drained from the drainage port 51.

As shown in FIG. 6, when the opening/closing part 60 is in the second position, the drainage part 115 is not blocked by the second seal part 63. Further, when the opening/closing part 60 is in the second position, the drain port 51 is closed by the first seal part 62. Further, the recovery port 52 is always open regardless of the position of the opening/closing part 60. Thus, in the second position, the opening/closing part 60 is in the second state in which the drainage port 51 is closed (the drainage part 115 is opened) and the collection port 52 is opened. In this second state, the liquid in the bathtub 100 passes through the drainage section 115, does not flow to the drainage port 51, and is recovered from the recovery port 52.

As shown in FIG. 7, when the opening/closing part 60 is at the third position, the drainage part 115 is closed by the second seal part 63. Thus, in the third position, the opening/closing part 60 is in the third state in which the drain part 115 is closed. In the third state, the liquid in the bath 100 does not pass through the drain 115 and is stored in the bath 100.

Thus, in this example, the opening/closing part 60 is one opening/closing valve that moves in the vertical direction. Since the opening/closing part 60 is configured by one opening/closing valve, it is possible to switch between the first state and the second state with a simple configuration. This makes it possible to improve both the drainage performance and the recovery performance and more easily improve the recovery rate of the detergent water.

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

The control unit 40 sets the opening/closing unit 60 to the second state as illustrated in FIG. 6 when collecting the detergent water that has been sprayed on the inner wall surface 110 of the bath 100. This can prevent the detergent water from flowing to the drain outlet 51 and being discharged. Therefore, the collection rate of detergent water can be improved.

When hot water is stored in the bathtub 100, the control unit 40 sets the opening/closing unit 60 to the third state as illustrated in FIG. 7. Thereby, when the water is stored in the bathtub 100, it is possible to prevent the water from being discharged from the drainage portion 115, and it is possible to pour hot water into the bathtub 100. Further, in this example, switching to the third state can also be performed with one open/close valve. This makes it possible to improve both the drainage performance and the collection performance, and more easily improve the collection rate of the detergent water, and easily pour hot water into the bath 100.

8 to 10 are cross-sectional views schematically showing the vicinity of the drainage member of the bathtub cleaning device according to the modification of the embodiment.
FIG. 8, FIG. 9, and FIG. 10 show a state in which the opening/closing section 60 is in the first position, the second position, and the third position, respectively. The opening/closing part 60 is one opening/closing valve that moves in the vertical direction.

In this example, a spring 61c is provided on the main body 61 of the opening/closing unit 60. The upper end of the spring 61c is connected to the lid 61a. A first seal portion 62 for closing the drainage port 51 is attached to the lower end of the spring 61c. The spring 61c urges the first seal portion 62 downward. In this way, by providing the spring 61c that urges the first seal portion 62 downward, the sealability of the first seal portion 62 can be improved.

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

As shown in FIG. 8, at the first position, the opening/closing part 60 is in the first state in which the drainage port 115 is opened (and the drainage port 115 is opened). In the first state, the liquid in the bath 100 passes through the drainage section 115 and is drained from the drainage port 51.

As shown in FIG. 9, at the second position, the opening/closing unit 60 is in the second state in which the drainage port 51 is closed (the drainage unit 115 is opened) and the collection port 52 is opened. In this second state, the liquid in the bathtub 100 passes through the drainage section 115, does not flow to the drainage port 51, and is recovered from the recovery port 52. By biasing the first seal portion 62 downward by the spring 61c, the drain port 51 can be more reliably closed at the second position.

As shown in FIG. 10, at the third position, the opening/closing section 60 is in the third state in which the drain section 115 is closed. In the third state, the liquid in the bath 100 does not pass through the drain 115 and is stored in the bath 100.

Also in this modification, when the control unit 40 drains the water stored in the bathtub 100, as shown in FIG. 8, the opening/closing unit 60 is set to the first state so that the water is stored in the bathtub 100. Water can be reliably discharged from the drainage port 51. Further, when the control unit 40 collects the detergent water that has been sprayed onto the inner wall surface 110 of the bathtub 100, as shown in FIG. 9, the opening/closing unit 60 is set to the second state, so that the detergent water is discharged to the drain port 51. It can be suppressed from flowing and being discharged. Therefore, the collection rate of detergent water can be improved. Further, when the control unit 40 stores water (hot water) in the bathtub 100, as shown in FIG. 10, the opening/closing unit 60 is set to the third state to store water in the bathtub 100. At this time, it is possible to suppress the discharge of water from the drainage unit 115, and it is possible to pour hot water into the bath 100.

FIG. 11 is a flowchart showing the operation of the bathtub cleaning device according to the embodiment.
As shown in FIG. 11, the control unit 40 can execute the main cleaning mode, the rinsing mode, and the pre-cleaning mode. The pre-cleaning mode is optional and can be omitted.

When the user performs a bathtub cleaning operation using a remote controller or the like (step S101), the control unit 40 drains the water in the bathtub 100 from the drainage 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 detection unit for detecting the water level inside the bathtub 100. It can be considered that the drainage is completed when a predetermined time has passed after the minimum water level that can be detected by the water level detection unit (or after the water level detection unit does not detect).

Next, the control unit 40 executes the pre-cleaning mode (step S103). In the pre-cleaning mode, the control unit 40 ejects detergent water or water from the cleaning nozzle 30 toward the inner wall surface 110 of the bath 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-cleaning mode, the control unit 40 may collect the detergent water by setting the opening/closing unit 60 to the second state during execution of the pre-cleaning mode.

Next, the control unit 40 executes the main cleaning mode (step S104). In the main cleaning mode, the control unit 40 ejects detergent water from the cleaning nozzle 30 toward the inner wall surface 110 of the bath 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 control unit 40 executes the rinse mode (step S105). In the rinse mode, the control unit 40 ejects water from the cleaning nozzle 30 toward the inner wall surface 110 of the bath 100. During execution of the rinse 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.

As described above, during the execution of the main cleaning mode, the opening/closing part 60 is set to the second state and the detergent water is collected, so that the detergent water can be suppressed from flowing to the drain port 51 and being discharged. Therefore, the collection rate of detergent water can be improved, and the cleaning power can be improved without increasing the amount of detergent used.

FIG. 12 is a flowchart showing the operation of the bath cleaning apparatus according to the embodiment in the main cleaning mode.
When the main cleaning mode is started, the control unit 40 moves the opening/closing unit 60 to the second position (step S201). As a result, the opening/closing unit 60 is in the second state in which the drainage port 51 is opened (and the drainage unit 115 is opened) and the recovery port 52 is opened.

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

When a predetermined amount of detergent water is ejected from the cleaning nozzle 30 (step S203: Yes), the controller 40 stops the ejection of detergent water from the cleaning nozzle 30 (step S204). The predetermined amount of jet is at least sufficient to fill the upstream end of the recovery connection portion 523 for returning the detergent water stored in the tank portion 522 between the detergent tank 10 and the cleaning 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 spouting is at least sufficient to cover the lower surface of the tank portion 522 with the detergent water. As a result, it is possible to prevent bubbles from being generated due to air being mixed in the recovery passageway 55 when the detergent water is recovered. The predetermined amount of ejection is less than or equal to the volume of the detergent mixing section 20. The control unit 40 calculates the amount of detergent water spouted from the washing nozzle 30 based on the output and drive time of the spout control unit 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.

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

When the predetermined amount of detergent water is collected (step S206: Yes), the control unit 40 stops the operation of the collection pump (step S207). The predetermined amount of recovery is about the difference between the amount of detergent water ejected in step S202 and the volume of the recovery passageway 55. The control unit 40 calculates the amount of detergent water collected from the recovery port 52 based on the output of the recovery pump and the drive time. When the collected detergent water is stored in the detergent mixing unit 20, the control unit 40 is 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. Alternatively, the amount of detergent water recovered from the recovery port 52 may be calculated.

The control unit 40 repeats steps S202 to S207 until the number of times the cleaning water is ejected from the cleaning nozzle 30 reaches a predetermined number (step S208: No). The predetermined number of times is, for example, 3 times. The predetermined number of times can be appropriately changed depending on the concentration of the detergent water, the flow rate of the jetted water, and the like.

When the detergent water is ejected from the cleaning nozzle 30 a predetermined number of times (step S208: Yes), the control unit 40 starts ejecting the detergent water from the cleaning nozzle 30 with the opening/closing unit 60 held in the second position. Yes (step S209). The control unit 40 continues to eject the detergent water until a predetermined amount of detergent water is ejected from the washing nozzle 30 (step S210: No).

When a predetermined amount of detergent water is ejected from the cleaning nozzle 30 (step S210: Yes), the control unit 40 stops the ejection of detergent water from the cleaning 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 flowchart showing a modified example of the operation of the bath cleaning apparatus according to the embodiment in the main cleaning mode.
In this example, the position (state) of the opening/closing part 60 at the start of spraying the detergent water is different from that of the flowchart shown in FIG. When the main cleaning mode is started, the control unit 40 moves the opening/closing unit 60 to the third position (step S301). As a result, the opening/closing unit 60 is in the third state in which the drainage unit 115 is closed. By injecting the detergent water from the cleaning nozzle 30 in this state (step S302), the detergent water used for cleaning is temporarily stored in the bath 100 without being collected from the collection port 52.

When a predetermined amount of detergent water is ejected from the cleaning nozzle 30 (step S303: Yes), the control unit 40 stops the ejection of detergent water from the cleaning nozzle 30 (step S304) and moves the opening/closing unit 60 to the second position. It is moved (step S305). As a result, the opening/closing unit 60 is in the second state in which the drainage port 51 is opened (and the drainage unit 115 is opened) and the recovery port 52 is opened. When the opening/closing part 60 is changed from the third state to the second state, the detergent water stored in the bath 100 flows into the recovery port 52. At this time, if necessary, a predetermined time may be waited until the detergent water 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 with the opening/closing unit 60 held at the second position (step S306). As a result, the detergent water stored in the bath 100 is recovered from the 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 way, the detergent water used for cleaning can be temporarily stored in the bath 100 by ejecting the detergent water from the cleaning nozzle 30 with the opening/closing portion 60 held at the third position. Then, by operating the recovery pump with the opening/closing unit 60 held in the second position, the recovery of the detergent water stored in the bath 100 can be started. As a result, 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 unit 57, it is possible to prevent the recovery pump from sucking air and generating bubbles when circulating the detergent water, and the shapes of the recovery channel 55, the drainage member 50, the detergent mixing unit 20, and the like. Can be made simple and compact.

FIG. 14 is a flowchart showing a modified example of the operation of the bathtub cleaning apparatus according to the embodiment in the main cleaning mode.
In this example, the state of the opening/closing valve 56 provided in the recovery passageway 55 is different from that of the flowchart shown in FIG. The open/close valve 56 is open in step S201 of the flowchart shown in FIG.

When the main cleaning mode is started, the control unit 40 moves the opening/closing unit 60 to the second position and closes the opening/closing valve 56 (step S401). As a result, the opening/closing unit 60 is in the second state in which the drainage port 51 is opened (and the drainage unit 115 is opened) and the recovery port 52 is opened. On the other hand, by closing the opening/closing valve 56, the recovery passageway 55 can be closed. By injecting the detergent water from the cleaning nozzle 30 in this state (step S402), the detergent water used for cleaning is collected in the recovery passageway 55 from the recovery port 52 to the opening/closing valve 56 and in the bath 100. Will be temporarily stored in.

When a predetermined amount of detergent water is ejected from the cleaning nozzle 30 (step S403: Yes), the control unit 40 stops the ejection of detergent water from the cleaning nozzle 30 (step S404) and opens the opening/closing valve 56 ( Step S405). By opening and closing the on-off valve 56, the detergent water stored in the recovery passageway 55 from the recovery port 52 to the on-off valve 56 and in the bath 100 may flow downstream of the on-off valve 56. It will be possible.

Next, the control unit 40 operates the recovery pump with the open/close valve 56 held open (step S406). As a result, the detergent water stored between the collection port 52 and the opening/closing valve 56 in the collection passage 55 flows downstream of the opening/closing valve 56 and is collected, and the detergent stored in the bath 100 is also collected. Water is recovered from the recovery port 52. The 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 way, the detergent water used for cleaning is temporarily stored in the bathtub 100 by ejecting the detergent water from the cleaning nozzle 30 with the opening/closing part 60 in the second state and the opening/closing valve 56 kept closed. be able to. Then, by operating the recovery pump with the on-off valve 56 held open, the recovery of the detergent water stored in the bath 100 can be started. As a result, 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 unit 57, it is possible to prevent the recovery pump from sucking air and generating bubbles when circulating the detergent water, and the shapes of the recovery channel 55, the drainage member 50, the detergent mixing unit 20, and the like. Can be made simple and compact.

FIG. 15A and FIG. 15B are cross-sectional views schematically showing the vicinity of the drainage member of the bathtub cleaning device according to the modification of the embodiment.
As shown in FIGS. 15A and 15B, the opening/closing unit 60 may be one opening/closing valve 70 that rotates between the drainage 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-shaped member for closing the drainage port 51, and one side thereof is connected to the shaft portion 73. The second lid portion 72 is a plate-shaped member for closing the recovery port 52, and one side thereof is connected to the shaft portion 73. The angle (inferior 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 (inferior 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 drainage member 50 located between the drainage outlet 51 and the recovery outlet 52.

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

As described above, by providing the opening/closing valve 70 that opens the drainage port 51 and closes the recovery port 52 in the first state, the drainage 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 reliably discharge the water from the drain port 51, but it is possible to prevent the water from flowing to the recovery port 52. Therefore, it is possible to prevent the collection rate of the detergent water from decreasing due to the dirt contained in the water stored in the bathtub 100 clogging the collection passage 55 and the washing passage 35 through the collection port 52.

The controller 40 puts the on-off valve 70 in the first state as shown in FIG. 15A when the water stored in the bath 100 is being drained. Thereby, the water stored in the bathtub 100 can be discharged from the drain port 51.

The control unit 40 sets the opening/closing valve 70 to the second state as shown in FIG. 15B when the detergent water jetted to the inner wall surface 110 of the bathtub 100 is collected. As a result, it is possible to prevent the detergent water from flowing to the drain port 51 at the time of collecting the detergent water and improve the detergent water recovery rate.

In this example, the opening/closing valve 70 does not enter the third state in which the drainage port 51 is closed and the recovery port 52 is closed. Therefore, in this example, the controller 40 sets the on-off valve 70 to the second state as shown in FIG. The on-off valve 56 provided in the recovery passageway 55 is closed. As a result, the drainage port 51 is closed and the recovery flow path 55 is closed, so that hot water can be poured into the bathtub 100.

Further, in this example, the detergent water used for cleaning can be temporarily stored and collected in the bathtub 100 according to the flowchart shown in FIG.

The embodiments of the present invention have been described above. However, the present invention is not limited to these descriptions. A person skilled in the art appropriately modified the above-described embodiment is also included in the scope of the present invention as long as it has the features of the present invention. For example, the shape, size, material, arrangement, etc. of each element included in the bathtub cleaning device and the like are not limited to those illustrated, but can be changed as appropriate.
Further, each element included in each of the above-described embodiments can be combined as long as 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 detection part, 15 detergent flow path, 16 open/close valve, 17 flow rate adjustment part, 18 pump, 19 backflow prevention part, 20 detergent mixing part, 21 water level detection part, 25 water supply flow path, 26 open/close valve, 27 flow rate adjusting part, 30 washing nozzle, 32 motor, 35 washing flow path, 36 jet control part, 37 backflow prevention part, 40 control part, 50 drainage member, 51 drainage port, 52 recovery port, 53 wall part, 55 recovery flow Passage, 56 on-off valve, 57 collecting section, 60 opening/closing section, 61 main body section, 61a lid section, 61b downward extending section, 61c spring, 62 first seal section, 63 second seal section, 65 drive section, 70 open/close valve, 71 1st lid part, 72 2nd lid part, 73 Shaft part, 80 Filter, 100 Bathtub, 110 Inner wall surface, 111 Inner bottom surface, 112 Inner wall surface, 115 Drainage part, 135 Detergent inlet, 200 Bath cleaning device, 510 Drainage Valve plate, 511 plate part, 512 drainage hole part, 513 upper extension part, 514 lower extension part, 515 connection part, 516 cutout part, 520 recovery tank, 521 drainage pipe part, 522 tank part, 523 recovery connection part, 524 Vents, 530 drain connections, WS water sources

Claims (8)

A detergent tank for storing detergent,
A detergent mixing unit that generates detergent water by mixing detergent supplied from the detergent tank and water supplied from a water supply source,
A cleaning nozzle for ejecting the detergent water toward the inner wall surface of the bathtub,
A cleaning flow path connecting the detergent mixing section and the cleaning nozzle,
A drainage member provided in the drainage part of the bathtub, having a drainage port and a recovery port that open in the drainage part,
A collection flow path for returning the detergent water collected from the collection port 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 open;
A control unit for controlling the opening/closing unit,
Equipped with
The control unit is
When the water stored in the bathtub is drained, the opening/closing section is set to the first state,
The bath cleaning device, wherein the opening/closing section is set to the second state when the detergent water jetted to the inner wall surface of the bath is collected. The opening/closing section is one opening/closing valve that moves in the vertical direction,
The bath cleaning apparatus according to claim 1, wherein the opening/closing valve is in the first state at a first position and is in the second state at a second position lower than the first position. The bath cleaning apparatus according to claim 2, wherein the on-off valve is in a third state in which the drainage section is closed at a third position lower than the second position. A detergent flow path connecting the detergent tank and the detergent mixing section,
A pump provided in any of the detergent flow path, the cleaning flow path, and the recovery flow path,
Further equipped with,
The control unit is capable of executing a main cleaning mode in which the detergent water is ejected from the cleaning nozzle,
In the main cleaning mode, the control unit ejects the detergent water from the cleaning nozzle with the opening/closing unit held at the third position, and when a predetermined amount of the detergent water is ejected from the cleaning nozzle, The bath cleaning apparatus according to claim 3, wherein the pump is operated to start the collection of the detergent water in a state where the opening/closing portion is held at the second position. The bath cleaning device according to claim 2, wherein the recovery port is provided so as to surround the drainage port. The opening/closing unit is one opening/closing valve that rotates between the drainage port and the recovery port,
The bath washing apparatus according to claim 1, wherein the opening/closing valve opens the drain port and closes the recovery port in the first state. A detergent flow path connecting the detergent tank and the detergent mixing section,
An on-off valve provided in the recovery flow path, which opens and closes the recovery flow path by the control unit,
A pump provided in any of the detergent flow path, the cleaning flow path, and the recovery flow path,
Further equipped with,
The control unit is capable of executing a main cleaning mode in which the detergent water is ejected from the cleaning nozzle,
In the main cleaning mode, the control unit ejects the detergent water from the cleaning nozzle in a state where the opening/closing unit is in the second state and the opening/closing valve is closed, and a predetermined amount of the detergent is discharged from the cleaning nozzle. 7. When the water is ejected, the pump is operated with the on-off valve held open to start the collection of the detergent water, and the bath cleaning according to any one of claims 1 to 6. apparatus. The bath cleaning apparatus according to any one of claims 1 to 7, further comprising a recovery unit that is provided in the recovery channel and that stores the detergent water recovered from the recovery port.

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