WO2015037199A1 - Sanitary washing device - Google Patents

Abstract

The present invention comprises a nozzle device, a water pump, a heat exchanger, and a sub-tank (600). The sub-tank (600) comprises: an atmosphere opening port (603); and a storage tank (616) and a water tank (615) that are divided by a partition wall (614). Washing water flows into the water tank (615) from a water inlet (601), flows past the partition wall (614) and into the storage tank (616), and is supplied to the heat exchanger from a water outlet (602) in the storage tank (616). Thus, a portion of air present in the washing water is separated and discharged from the atmosphere opening port (603) to the exterior of the sub-tank (600), and the washing water that has decreased by the air content is supplied to the heat exchanger. Consequently, the occurrence of air bubbles in the heat exchanger is decreased, and the thermal efficiency and durability of the heat exchanger can be improved.

Description

Sanitary washing device

The present invention relates to a water supply structure for cleaning water in a sanitary cleaning device for cleaning a human body part.

Conventionally, a sanitary washing apparatus equipped with a heat exchanger that instantaneously heats this type of wash water has a strainer, a check valve, a fixed valve, and a branch faucet connected to a water pipe on the upstream side of the heat exchanger. A flow valve, a water stop solenoid valve, and a flow sensor are connected in this order. On the downstream side of the heat exchanger, a temperature sensor, a pump, a switching valve, and a nozzle unit are sequentially connected. Furthermore, a sanitary washing device is disclosed in which a sealed flow path is formed from the branch faucet to the nozzle device, and in particular, the upstream side of the heat exchanger has a completely sealed structure (see, for example, Patent Document 1).

Hereinafter, a conventional sanitary washing apparatus will be described with reference to FIG.

FIG. 37 is a schematic diagram showing the configuration of the water circuit of the conventional sanitary washing apparatus described in Patent Document 1.

As shown in FIG. 37, in the conventional sanitary washing device, a branch faucet 2 connected to the water pipe 1 is arranged at the uppermost stream of the water circuit. A strainer 3, a check valve 4, a constant flow valve 5, a water stop electromagnetic valve 6, a flow sensor 7, a temperature sensor 8, and a heat exchanger 9 are sequentially installed downstream of the branch tap. Downstream of the heat exchanger 9, a temperature sensor 10, a pump 11, a switching valve 12, and a nozzle unit 13 are sequentially installed.

However, the configuration of the conventional sanitary washing apparatus uses a high capacity and high temperature heater in the heat exchanger in order to instantaneously heat the washing water. For this reason, air contained in the cleaning water is separated and bubbles are easily generated on the surface of the heater. As a result, the heat of the heater is not easily transmitted to the washing water, and the heat efficiency of the heat exchanger may be reduced.

Also, if a large amount of bubbles are generated, a boiling phenomenon occurs locally, and the heater of the heat exchanger becomes partially hot. Thereby, damage and durability of a heater fall. That is, there is still room for improvement from the viewpoint of improving the heat efficiency of the heat exchanger and ensuring durability.

Japanese Patent Laying-Open No. 2005-076417

The present invention provides a sanitary washing apparatus having a highly efficient and durable heat exchanger by reducing the air contained in the washing water supplied to the heat exchanger.

That is, the sanitary washing device of the present invention includes a nozzle device that ejects washing water, a washing water supply channel that supplies washing water to the nozzle device, and a control unit. The cleaning water supply flow path includes a water pump for supplying cleaning water to the nozzle device, a heat exchanger upstream of the water pump for heating the cleaning water, and a cleaning water supply upstream of the heat exchanger. A sub-tank that opens part of the flow path to the atmosphere. The sub-tank is disposed near the bottom of the storage tank, the atmosphere opening port disposed on the upper surface, the water tank divided and formed by the partition wall, the storage tank, the water inlet disposed near the bottom of the water tank It has a water outlet. And the wash water which flowed into the water tank from the water inlet of the sub tank has the structure which flows into the storage tank beyond the upper end of a partition wall.

According to this configuration, at least part of the cleaning water containing air flowing in from the water inlet near the bottom of the water tank of the sub tank is separated while rising in the water tank. The separated air is discharged to the outside of the sub tank through the air opening, and the air content of the washing water is reduced. Wash water with reduced air content flows over the partition wall and into the storage tank. And the wash water with which air content was reduced flows out from the water outlet near the bottom part of a storage tank, and is supplied to a heat exchanger. That is, cleaning water with reduced air content is supplied to the heat exchanger. Thereby, generation | occurrence | production of the bubble in a heat exchanger can be reduced and the thermal efficiency of a heat exchanger can be improved. As a result, a sanitary washing device that can reduce damage to the heat exchanger and improve durability can be realized.

FIG. 1 is a perspective view of a state in which the sanitary washing device according to Embodiment 1 of the present invention is installed in a toilet bowl. FIG. 2 is a perspective view of the sanitary washing device with the front main body case removed. FIG. 3 is a perspective view of a state where the front main body case and the control unit of the main body of the sanitary washing device are removed. FIG. 4 is a perspective view showing an upper surface of the operation unit of the sanitary washing device. FIG. 5 is a perspective view showing the external appearance of the remote controller. FIG. 6 is a schematic diagram showing a configuration of a water circuit of the sanitary washing device. FIG. 7 is a perspective view showing an exploded state of the water circuit of the sanitary washing device. FIG. 8 is a perspective view showing an assembled state of the water circuit of the sanitary washing device. FIG. 9 is a perspective view showing the appearance of the sub tank. FIG. 10 is a cross-sectional view of the sub tank in the lateral direction. FIG. 11 is a cross-sectional view of the sub tank in the front-rear direction. FIG. 12 is a perspective view showing the appearance of the heat exchanger. FIG. 13 is a cross-sectional view of the heat exchanger. FIG. 14 is a perspective view showing the appearance of the water pump. FIG. 15 is a cross-sectional view of the water pump. FIG. 16 is a perspective view showing an external appearance of the nozzle device in the storage state. 17 is a cross-sectional view taken along line 17-17 shown in FIG. FIG. 18 is a vertical cross-sectional view showing a storage state of the nozzle device. 19 is a detailed cross-sectional view of a portion B shown in FIG. 20 is a cross-sectional view taken along line 20-20 shown in FIG. FIG. 21 is a cross-sectional view illustrating a storage state of the nozzle device. 22 is a detailed cross-sectional view of a portion C shown in FIG. FIG. 23 is a vertical cross-sectional view showing a state of cleaning the bottom of the nozzle device. 24 is a detailed cross-sectional view of a portion D shown in FIG. FIG. 25 is a longitudinal sectional view showing a bidet cleaning state of the nozzle device. 26 is a detailed cross-sectional view of a portion E shown in FIG. FIG. 27 is a cross-sectional view showing a bidet cleaning state of the nozzle device. FIG. 28 is a detailed cross-sectional view of a portion G shown in FIG. FIG. 29 is a perspective view showing the disassembled state of the toilet lid upside down. FIG. 30 is a perspective view showing a state in which the toilet lid is assembled upside down. 31 is a cross-sectional view taken along line 31-31 shown in FIG. 32 is a cross-sectional view taken along line 32-32 shown in FIG. FIG. 33 is a perspective view showing an appearance of a sub tank in the second embodiment of the present invention. FIG. 34 is a cross-sectional view in the lateral direction of the sub-tank in the same embodiment. FIG. 35 is a cross-sectional view in the front-rear direction of the sub-tank in the same embodiment. FIG. 36 is a schematic view of the top surface portion of the sub-tank in the full state in the same embodiment. FIG. 37 is a schematic diagram showing a configuration of a water circuit of a conventional sanitary washing device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
<1> Overall Configuration of Sanitary Cleaning Device The overall configuration of the sanitary cleaning device in the first embodiment will be described below with reference to FIGS.

FIG. 1 is a perspective view of a state in which the sanitary washing device according to the first embodiment is installed on a toilet bowl. FIG. 2 is a perspective view of the sanitary washing device with the front main body case removed. FIG. 3 is a perspective view of a state where the front main body case and the control unit of the main body of the sanitary washing device are removed. FIG. 4 is a perspective view showing an upper surface of the operation unit of the sanitary washing device. FIG. 5 is a perspective view showing the external appearance of the remote controller.

As shown in FIG. 1, the sanitary washing device 100 according to the present embodiment includes at least a main body 200, a toilet seat 300, a toilet lid 320, a remote controller 400, a human body detection sensor 450, and the like as main components. The main body 200, the toilet seat 300, and the toilet lid 320 are integrally formed and are installed on the upper surface of the toilet bowl 110.

In the following description, the installation side of the main body 200 of the sanitary washing device 100 is the rear, the installation side of the toilet seat 300 is the front, the right side toward the front is the right side, and the left side is the left side toward the front. The arrangement will be described.

The operation unit 210 protrudes from the side of the main body 200 and is provided integrally. The toilet seat toilet lid rotation mechanism 360 is provided on the front side of the main body 200, and drives the toilet seat 300 and the toilet lid 320 to be freely opened and closed. Note that the toilet seat toilet lid rotation mechanism 360 includes, for example, a DC motor and a plurality of gears, and opens or closes the toilet seat 300 and the toilet lid 320 individually or simultaneously.

As shown in FIG. 1, when the toilet lid 320 is opened, the toilet lid 320 stands up so as to be positioned at the rearmost part of the sanitary washing device 100. On the other hand, when the toilet lid 320 is closed, the upper surface of the toilet seat 300 is hidden.

The toilet lid 320 is formed of a member made of a resin material such as PP (polypropylene) or ABS, and has a double structure and a heat insulating structure using a heat insulating material. Details of the toilet lid 320 will be described later.

The toilet seat 300 has a built-in toilet seat heater (not shown) for heating the seating surface. The toilet seat heater heats the seating surface of the toilet seat 300 to a comfortable temperature.

Also, a seating sensor (not shown) is installed at a bearing portion in the main body 200 that supports the rotation shaft of the toilet seat 300, and detects a human body seated on the toilet seat 300. The seating sensor is constituted by a weight type sensor, for example, and opens and closes a switch by a weight change caused by a user sitting on the toilet seat 300. Thereby, the seating sensor detects that the user is seated on the seating surface of the toilet seat 300.

As shown in FIGS. 2 and 3, the main body 200 has a sub-tank 600, a heat exchanger 700, a cleaning unit 500 including a nozzle device 800 for cleaning a local part of the human body, and deodorizing odor during defecation. A deodorizing device 120 and a control unit 130 for controlling each function of the sanitary washing device 100 are incorporated. Details of the cleaning unit 500 will be described later.

At this time, the nozzle device 800, which is a main component of the cleaning unit 500, is installed at the center inside the main body 200, and the deodorizing device 120 is installed on the left side of the nozzle device 800. Further, a toilet seat toilet lid rotation mechanism 360 that opens and closes the toilet seat 300 and the toilet lid 320 is installed on the left side of the nozzle device 800.

On the right side of the nozzle device 800, a water stop electromagnetic valve 514 of the cleaning unit 500, a sub tank 600, and the like are installed in front. A heat exchanger 700 is installed behind the nozzle device 800. A water pump 516 is installed behind the heat exchanger 700. The control unit 130 is installed above the cleaning unit 500.

Further, as shown in FIG. 4, the operation unit 210 is provided with a plurality of switches and indicator lamps 240 for operating and setting each function of the sanitary washing device 100. An operation board (not shown) is installed inside the operation unit 210. A plurality of tact switches and a plurality of LEDs are installed on the operation board. Thereby, it is possible to press the tact switch and visually recognize the LED via the switch nameplate attached to the upper surface of the operation unit 210.

In addition, the operation unit 210 includes an infrared receiving unit 211. The infrared receiving unit 211 receives an infrared signal transmitted from the remote controller 400 and the human body detection sensor 450 shown in FIG.

The switch of the operation unit 210 includes a plurality of operation switches 220 for operating the cleaning operation, a plurality of setting switches 230 for setting various functions, and the like. Moreover, the indicator lamp 240 is comprised from several LED which displays a setting state.

The operation switch 220 of the operation unit 210 includes a hip cleaning switch 221 that is used as an auxiliary when the battery of the remote controller 400 is dead or broken, and a nozzle cleaning switch 222 that is operated when cleaning the nozzle. .

The setting switch 230 of the operation unit 210 includes, for example, a hot water temperature switch 231, a toilet seat temperature switch 232, an 8-hour switch 233, a power saving switch 234, and a toilet lid automatic opening / closing switch 235. Each switch performs the following operation by a pressing operation. That is, the hot water temperature switch 231 sets the temperature of the cleaning water. The toilet seat temperature switch 232 sets the temperature of the toilet seat 300. When the eight-hour switch 233 is set, the warming of the toilet seat 300 is stopped and the warming of the toilet seat 300 is resumed after eight hours. The power saving switch 234 automatically learns the time period when the sanitary washing device 100 is not used, and reduces the heat retention temperature of the toilet seat 300 during the time period when it is not used to save power. The toilet lid automatic opening / closing switch 235 sets an automatic opening / closing operation of the toilet seat 300 and the toilet lid 320.

It should be noted that many operations of the sanitary washing apparatus 100 are performed by the remote controller 400 configured separately from the main body 200. Therefore, the remote controller 400 is attached to the wall surface of the toilet room that is easy for the user who is seated on the toilet seat 300 to operate.

The overall shape of the remote controller 400 is a thin rectangular parallelepiped as shown in FIG. The remote controller 400 includes a plurality of switches and indicator lights on the upper surface and the front surface of a box-shaped remote control main body 401 molded from a resin material such as PP or ABS. In the vicinity of the upper corner of the remote control main body 401, a transmission unit 402 that transmits an operation signal of the remote controller 400 to the main body 200 by infrared rays is arranged.

In addition, a control board (not shown) constituting a control function of the remote controller 400, a battery (not shown) as a power source of the remote controller 400, and the like are built in the remote control body 401.

For example, a butt cleaning switch 410, a bidet cleaning switch 411, a stop switch 412, a move cleaning switch 413, a rhythm cleaning switch 414, and the like are arranged in the center of the front surface of the remote control body 401. Each switch performs the following operations by a pressing operation or the like. The butt cleaning switch 410 starts butt cleaning. The bidet washing switch 411 starts local washing of the woman. The stop switch 412 stops the buttocks cleaning and the bidet cleaning. The move cleaning switch 413 is capable of cleaning a wide range by periodically moving the cleaning position back and forth during buttocks cleaning and bidet cleaning. The rhythm cleaning switch 414 performs cleaning by periodically changing the cleaning strength of the cleaning water during butt cleaning.

Further, for example, a cleaning strength switch 415, a cleaning position switch 416, a nozzle sterilization switch 417, and the like are disposed on the front upper portion of the remote control body 401. The cleaning strength switch 415 adjusts the cleaning strength at the time of buttocks cleaning and bidet cleaning with two switches. The cleaning position switch 416 adjusts the cleaning position at the time of buttocks cleaning and bidet cleaning with two switches. The nozzle sterilization switch 417 sterilizes the nozzle by washing it with warm water at 40 ° C. for about 1 minute, for example.

Above the cleaning strength switch 415, an LED strength indicator 421 that displays the cleaning strength in five levels is arranged. Further, a position indicator lamp 422 for displaying the cleaning position in five stages is disposed above the cleaning position switch 416.

On the upper surface of the remote control main body 401, a toilet lid switch 418 for electrically opening and closing the toilet lid 320 and a toilet seat switch 419 for electrically opening and closing the toilet seat 300 are installed. And it is comprised so that a user can open and close the toilet seat 300 and the toilet lid 320 arbitrarily by operating each switch.

Further, the human body detection sensor 450 shown in FIG. 1 is configured separately from the main body 200, and is attached to, for example, a wall surface of a toilet room. The human body detection sensor 450 includes, for example, a pyroelectric sensor, a sensor control unit, an infrared transmission unit, a battery that is a power source of the human body detection sensor 450, and the like (not shown). The pyroelectric sensor receives infrared rays emitted from the human body. A sensor control part determines the detection of a human body with the signal of a pyroelectric sensor. The infrared transmission unit transmits a human body detection signal from the sensor control unit to the control unit of the main body 200 using infrared rays.

As described above, the sanitary washing device of the present embodiment is configured.

<2> Configuration of Cleaning Unit The configuration of the cleaning unit of the sanitary cleaning device in the present embodiment will be described below with reference to FIGS.

FIG. 6 is a schematic diagram showing the configuration of the water circuit of the sanitary washing apparatus. FIG. 7 is a perspective view showing an exploded state of the water circuit of the sanitary washing device. FIG. 8 is a perspective view showing an assembled state of the water circuit of the sanitary washing device.

In addition, the washing | cleaning part 500 shown in FIG. 6 is incorporated in the main body 200, and wash | cleans a user's local part.

As shown in FIG. 6, the cleaning unit 500 includes at least a nozzle device 800 that ejects cleaning water, a series of cleaning water supply channels 900 that supply cleaning water to the nozzle device 800 from a water supply connection port 510, and the like. Yes.

In the cleaning water supply flow path 900, a water supply connection port 510, a strainer 511, a check valve 512, a constant flow valve 513, a water stop electromagnetic valve 514, a relief valve 515, a sub tank 600, a heat exchanger 700, a buffer tank 750, water A pump 516 and a flow control valve 517 are sequentially installed. Finally, the cleaning water supply channel 900 is connected to the nozzle device 800.

The water supply connection port 510 is arrange | positioned at the lower right side of the main body 200, and is connected with water supply piping. The strainer 511 is disposed inside the water supply connection port 510 and prevents the inflow of waste contained in tap water. The check valve 512 prevents the water stored in the sub tank 600 from flowing back into the water pipe.

The constant flow valve 513 keeps the amount of cleaning water flowing in the cleaning water supply channel 900 constant. The water stop solenoid valve 514 electrically opens and closes the cleaning water supply channel 900. And the constant flow valve 513, the water stop solenoid valve 514, and the relief valve 515 are comprised integrally as shown in FIG.

The sub tank 600 is provided downstream of the water stop solenoid valve 514 and includes an atmosphere opening 603. The heat exchanger 700 heats the cleaning water instantly. The buffer tank 750 makes the temperature of the hot water heated by the heat exchanger 700 uniform.

The water pump 516 is connected to the downstream side of the buffer tank 750. The nozzle device 800 is connected to a water pump 516 via a flow control valve 517. And each port of the flow control valve 517 is connected to the bottom cleaning unit 831, the bidet cleaning unit 832, the nozzle cleaning unit 833, and the like of the nozzle device 800.

7 and 8, among the members constituting the cleaning unit 500, the water supply connection port 510, the strainer 511, the check valve 512, the constant flow valve 513, the water stop electromagnetic valve 514, the relief valve 515, The sub tank 600, the heat exchanger 700, the buffer tank 750, and the water pump 516 are incorporated into a chassis 501 that is molded of a resin material such as ABS, and is integrally configured. And it is assembled | attached to the rear main body case 201 of the main body 200 in the state integrated in the chassis 501. FIG.

The strainer 511 and the check valve 512 are integrated into the water supply connection port 510, and the constant flow valve 513 and the relief valve 515 are integrated into the water stop electromagnetic valve 514. The buffer tank 750 is configured integrally with the heat exchanger 700.

And the water supply connection port 510 and the water stop solenoid valve 514, the water stop solenoid valve 514, the sub tank 600, the sub tank 600, and the heat exchanger 700 are packing the mutual connection ports without a connection tube etc., for example, O Connected directly through the ring. Further, the members constituting these water circuits are installed and fixed at predetermined positions of the chassis 501.

採用 By adopting the above configuration in the water circuit, the watertight structure is improved and the arrangement accuracy of the members is improved. In particular, since the arrangement accuracy of the sub tank 600 and the heat exchanger 700 is improved, the control accuracy of the flow rate of the cleaning water is improved. As a result, the performance of the cleaning unit 500 is improved and the flow rate control accuracy is improved.

Next, the configuration of the water pump 516 described above will be described with reference to FIGS. 14 and 15 with reference to FIG.

FIG. 14 is a perspective view showing the appearance of the water pump. FIG. 15 is a cross-sectional view of the water pump.

As shown in FIG. 14 and FIG. 15, the water pump 516 is constituted by a piston pump which is a positive displacement pump whose outer shape is substantially L-shaped (including L-shaped), for example. Specifically, the water pump 516 is driven by a substantially cylindrical (including a cylindrical) motor unit 516a, a link mechanism unit 516b that converts the rotational motion of the motor into a reciprocating motion, and a reciprocating motion of the link mechanism unit 516b. The piston portion 516c is configured. A water suction port 516d and a discharge port 516e are provided as connection ports on the outer surface of the piston portion 516c.

In the case of the water pump 516 of the present embodiment, the vibration generated in the motor unit 516a that is only rotational motion is less than that in the link mechanism portion 516b and the piston portion 516c that reciprocate during driving. Yes.

Specific operation of the water pump 516 is as follows. First, when the motor unit 516a is driven, the piston unit 516c starts reciprocating motion. Then, the cleaning water is sucked from the water suction port 516d of the piston portion 516c, and the cleaning water is discharged from the discharge port 516e. At this time, the wash water discharged from the discharge port 516e is discharged in a water flow with an appropriate pulsation as the piston portion 516c reciprocates.

Furthermore, the outer periphery of the substantially cylindrical motor unit 516a of the water pump 516 having the above configuration is surrounded by a foamed resin cushioning member (not shown) having elasticity. The motor unit 516a is supported by the water pump installation unit 501a by inserting the motor unit 516a into a substantially cylindrical (including cylindrical) water pump installation unit 501a provided at the rear of the chassis 501. At this time, the link mechanism portion 516b and the piston portion 516c are installed in a suspended state so as to hang downward.

In addition, as shown in FIG. 7, the water pump installation part 501a is formed with thin thickness, and is formed in the upper part of the rib-shaped leg part 501b which stood up from the bottom face of the chassis 501. That is, by forming with a thin wall thickness, the vibration of the water pump 516 can be effectively absorbed by the elasticity of the resin constituting the water pump installation portion 501a.

Further, a hot water outlet 712 that is a connection port of the heat exchanger 700 integrally formed with the buffer tank 750 and a water suction port 516d that is a connection port of the water pump 516 are connected by a connection tube made of a soft resin. .

As described above, in the water pump 516 of the present embodiment, the motor unit 516a with less vibration is installed on the water pump installation unit 501a formed with a thin thickness of the chassis 501 via the buffer member. On the other hand, the link mechanism portion 516b and the piston portion 516c that generate a lot of vibrations are suspended in a free state. Further, the piston portion 516c and the like are connected to the buffer tank 750 via a connection tube 502 (see FIG. 8) made of a soft resin. Thereby, the vibration generated when the water pump 516 is driven is suppressed from being transmitted to the chassis 501, other members, and the main body 200. As a result, the comfort and durability of the sanitary washing device can be improved.

In particular, the water pump 516 is supported via two different materials, a cushioning member made of foamed resin and an elastic resin that forms the water pump installation portion 501a. Therefore, vibrations in a wide range of frequencies can be absorbed. Thereby, transmission of vibration to the main body 200 can be further effectively suppressed.

Hereinafter, basic control of the cleaning unit 500 of the sanitary cleaning device of the present embodiment will be described with reference to FIG.

First, as shown in FIG. 6, tap water flowing through the water pipe is supplied as wash water from the water supply connection port 510, and the wash water is supplied to the sub tank 600 by opening the water stop solenoid valve 514. At this time, the flow rate of the cleaning water flowing through the cleaning water supply channel 900 is maintained constant by the constant flow valve 513. The driving of the water stop solenoid valve 514 is controlled by the control unit 130 based on the operation of the remote controller 400 and the operation unit 210.

Next, the wash water stored in the sub tank 600 is supplied to the heat exchanger 700 by driving the water pump 516. The driving of the water pump 516 is controlled by the control unit 130 based on the operation of the remote controller 400 and the operation unit 210.

Then, the control unit 130 drives the water pump 516 and starts energizing the flat heater 702 (see FIG. 13) of the heat exchanger 700 to start heating the cleaning water. At this time, the control unit 130 controls energization to the flat heater 702 based on the detection information of the incoming water temperature sensor 630 and the hot water temperature sensor 730. Accordingly, the temperature of the cleaning water is maintained at the temperature set by the hot water temperature switch 231 of the operation unit 210.

Next, the washing water heated by the heat exchanger 700 is supplied to the flow control valve 517. Then, the control unit 130 controls the flow control valve 517 based on operation information of the operation unit 210 and the remote controller 400. As a result, the cleaning water is supplied to any of the bottom cleaning unit 831, the bidet cleaning unit 832, and the nozzle cleaning unit 833 of the nozzle device 800. As a result, the washing water is ejected from any of the buttocks cleaning outlet 834, the bidet cleaning outlet 836, and the nozzle cleaning outlet 838, and predetermined cleaning is performed.

As described above, the cleaning unit of the sanitary cleaning device of the present embodiment is controlled to execute a desired operation.

<3> Configuration of Subtank Hereinafter, the configuration of the subtank of the sanitary washing device according to the present embodiment will be described with reference to FIGS.

FIG. 9 is a perspective view showing the appearance of the sub tank. FIG. 10 is a cross-sectional view of the sub tank in the lateral direction. FIG. 11 is a cross-sectional view of the sub tank in the front-rear direction.

First, as shown in FIG. 9, the sub-tank 600 includes at least a tank main body 610 molded from a resin material such as ABS, a water level detection sensor 620, an incoming water temperature sensor 630, and the like. The water level detection sensor 620 detects the level of the cleaning water stored in the tank body 610. The incoming water temperature sensor 630 is composed of, for example, a thermistor and detects the temperature of the cleaning water supplied into the tank body 610.

The tank body 610 includes a front tank 611 that constitutes a front wall, both side walls, a bottom surface, and a top surface of the tank, a rear tank 612 that constitutes a rear wall of the tank, and an open air disposed on the top surface of the tank body 610. It is comprised by three members, such as the part 613. FIG. The overall shape of the tank body 610 is formed by a plurality of planes including a front wall, a rear wall, both side walls, a bottom surface, and a top surface, and the shape when viewed in a plan view as shown in FIG. (Including a square). The front wall of the front tank 611 includes an inclined portion that retreats from the middle. That is, as shown in FIG. 11, the shape when viewed from the side is formed in a substantially trapezoidal shape (including a trapezoidal shape) in which the upper part is thinner than the lower part. As a result, the upper cross-sectional area of the tank body 610 is smaller than the lower cross-sectional area.

Further, a water inlet 601 is provided at the lower part of one side wall of the tank body 610, and a water outlet 602 is provided at the lower part of the rear wall of the tank body 610.

Furthermore, the atmosphere opening portion 613 disposed on the top surface of the tank body 610 is provided with an atmosphere opening port 603 that communicates the inside and the outside of the tank body 610. The air release port 603 discharges air accumulated in the tank body 610 to the outside, and maintains the internal pressure of the tank body 610 at atmospheric pressure at all times. Thereby, the inside of the sub tank 600 is always maintained at atmospheric pressure, and the washing water supply flow path 900 from the downstream of the sub tank 600 to the water inlet 516d of the water pump 516 is also maintained at atmospheric pressure. Therefore, the water pump 516 can absorb water without being affected by fluctuations in water pressure. As a result, the water pump 516 can exhibit a stable pump function.

Further, as shown in FIG. 10, a buffer portion 613a having a large cross-sectional area of the flow passage is formed in the flow passage communicating with the air release port 603 of the air release portion 613 in the sub tank 600. The buffer unit 613a temporarily stores the cleaning water when, for example, the cleaning water is about to flow out from the atmosphere opening port 603 with bubbles. Thereby, it is suppressed that washing water flows out from the atmosphere opening 603.

Furthermore, a partition wall 614 is provided inside the tank body 610. The partition wall 614 divides the inside of the tank body 610 into two tanks, a water tank 615 and a storage tank 616. A water inlet 601 is provided near the bottom of the side surface of the water tank 615, and a water outlet 602 is provided near the bottom of the rear wall of the storage tank 616.

That is, by forming the water tank 615 and the storage tank 616 with the partition wall 614, when air is contained in the wash water flowing from the water inlet 601, the air passes through the atmosphere opening 603 from the upper part of the water inlet 615. It passes through and is released to the outside. Therefore, only cleaning water that does not contain air can be allowed to flow into the storage tank 616.

Further, a barrier 617 interposed between the upper surface opening 615a of the water tank 615 and the atmosphere opening part 613 is disposed above the water tank 615 of the tank body 610 in a substantially horizontal direction (including the horizontal direction) from the side wall of the tank body 610. ) Protruding. The barrier 617 has a size that covers the entire upper surface opening 615 a of the water tank 615.

Also, a plurality of rectifying ribs 618 are formed in the water tank 615 so as to protrude alternately in a substantially horizontal direction (including the horizontal direction) on the side wall and the partition wall 614 of the tank body 610.

Hereinafter, the flow of cleaning water in the sub tank 600 will be described.

The wash water that has flowed from the water inlet 601 of the sub tank 600 first flows into the lower portion of the water tank 615. Then, the flow in the water tank 615 is raised while the flow direction is changed by the rectifying rib 618. At this time, when the pressure of the washing water flowing in from the water inlet 601 is high, or when the flow is significantly disturbed including a large amount of air, the flow straightening rib 618 rectifies the flow appropriately. Further, the rectifying rib 618 separates air contained in the cleaning water by vortices generated on the downstream side of the rectifying rib 618.

Further, the wash water from which the air rising in the water entering tank 615 is separated passes over the upper end of the partition wall 614 and flows into the storage tank 616 to be stored. At this time, even if the pressure of the cleaning water flowing in from the water inlet 601 is high or the flow is significantly disturbed including a large amount of air, the upward flow of the cleaning water is suppressed by the barrier 617. Therefore, the washing water hits the atmosphere opening portion 613, and direct outflow from the atmosphere opening port 603 to the outside of the sub tank 600 is prevented.

As described above, the cleaning water that has flowed from the water inlet 601 of the sub tank 600 is separated from the air included in the cleaning water by the rectifying ribs 618 and the like while rising in the water inlet tank 615. The separated air is discharged to the outside of the tank body 610 from the atmosphere opening port 603. As a result, cleaning water that does not contain air is stored in the storage tank 616 and supplied to the heat exchanger 700 from the water outlet 602 of the sub tank 600.

If air is mixed in the washing water supplied from the sub tank 600 to the heat exchanger 700, bubbles are generated inside the heat exchanger 700. Thereby, the temperature inside the heat exchanger 700 rises abnormally, and the heat exchanger 700 may be damaged. Therefore, the sub tank 600 according to the present embodiment is provided with a partition wall 614 to prevent air from entering. Thereby, damage to the heat exchanger 700 can be effectively prevented.

As shown in FIGS. 10 and 11, the sub tank 600 includes a common electrode 621 that is made of a stainless material and serves as a common electrode, and a plurality of water level electrodes 622 that are installed for each water level. A water level detection sensor 620 is provided. In this embodiment, an example in which one common electrode 621 and two water level electrodes 622 are configured is shown.

The common electrode 621 is disposed on the inner surface of the lower portion of the front wall of the tank body 610, and the water level electrode 622 is disposed on the inner surface of the rear wall of the tank body 610. Further, the water level electrode 622 includes an upper electrode 623 provided at the upper portion and a lower electrode 624 provided at the lower portion. At this time, the common electrode 621 is disposed at a position lower than the lower electrode 624 of the water level electrode 622 and is always immersed in a normal use state.

In other words, by installing the common electrode 621 and the upper electrode 623 and the lower electrode 624, which are the water level electrodes 622, on different surfaces, it is possible to prevent erroneous detection of residual water adhering to the inner surface of the tank body 610 as stored water. it can.

Here, the water level of the cleaning water is detected by the water level electrode 622 as follows. First, a direct current is applied between the common electrode 621 and the water level electrode 622. Then, whether or not the water level electrode 622 is submerged is detected by a change in voltage. Thereby, the water level of washing water is detected. That is, when the water level in the storage tank 616 rises, the lower electrode 624 and the upper electrode 623 are submerged. At this time, the voltage between the common electrode 621, the lower electrode 624, and the upper electrode 623 decreases. Thereby, the control part 130 detects the water level of a wash water from the fall of a voltage.

Further, the upper electrode 623 of the water level electrode 622 is used for detecting the upper limit water level, and the lower electrode 624 is used for detecting the lower limit water level. The upper electrode 623 is installed at a position lower than the atmosphere opening 603. Thereby, it is possible to prevent the washing water from flowing out from the atmosphere opening port 603. Further, the lower electrode 624 is installed above the water outlet 602 that flows into the heat exchanger 700. Thereby, air can be prevented from flowing into the heat exchanger 700.

Further, the control unit 130 is configured to apply while periodically reversing the polarity of the direct current applied between the common electrode 621 and the water level electrode 622. This is to prevent elution due to oxidation and ionization of the metal forming the electrode by the action of electrolysis that occurs when a direct current is applied between the common electrode 621 and the water level electrode 622 through the wash water. . That is, when a direct current is applied, the water level electrode 622 may deteriorate in a short time. Therefore, the polarity of the current is periodically reversed to suppress the deterioration of the water level electrode 622 due to electrolysis.

In the present embodiment, the polarity inversion interval is set to a time corresponding to the AC power supplied as the power for the sanitary washing device. That is, when the supplied AC power supply is 50 Hz, the time is 1/50 seconds, and when the supplied AC power supply is 60 Hz, the time is 1/60 seconds. This eliminates the need to add a new control circuit in order to reverse the polarity, thereby realizing a reduction in size and cost.

As described above, in the sanitary washing device 100 of the present embodiment, the water stop electromagnetic valve 514 is opened and the washing water is supplied to the sub tank 600. And if the upper limit water level is detected with the water level electrode 622, the water stop solenoid valve 514 will be closed and water supply will be stopped. At this time, the sub tank 600 is filled with water.

Furthermore, when the normal cleaning operation is performed from the sub tank 600 being full, the water level is lowered. Then, when the lower limit water level is detected by the water level electrode 622, the water stop electromagnetic valve 514 is opened again to supply cleaning water to the sub tank 600. Thereby, water supply is continued until the upper limit water level is detected by the water level electrode 622.

Note that the maximum amount of cleaning water stored in the sub tank 600 is normally 100 cc. Therefore, the amount of water from the upper limit water level to the lower limit water level of the sub tank 600 of the present embodiment is set to 65 cc. However, this is only an example, and it goes without saying that the present invention is not limited to this.

Further, the flow rate of cleaning water used for cleaning is usually set to 450 cc / min when cleaning with the strongest cleaning power and 260 cc / min when cleaning with the weakest cleaning power. Therefore, the time until the cleaning water reaches the lower limit water level from the upper limit water level is 8.7 seconds when the cleaning is performed with the strongest cleaning power, and 15 seconds when the cleaning water is cleaned with the weakest cleaning power.

In general, the time required for the user to clean the local area is 30 seconds or more. For this reason, even when washing is performed with the weakest cleaning power, 130 cc of cleaning water is used. That is, in one cleaning operation, the change from the upper limit water level to the lower limit water level can be detected by the water level electrode 622 at least once.

Therefore, the control unit 130 measures the elapsed time from the upper limit water level to the lower limit water level, and calculates the measured time and the amount of water (65 cc) from the upper limit water level to the lower limit water level. Then, the flow rate of the cleaning water is calculated. At this time, if there is a difference between the flow rate set for each cleaning strength and the calculated flow rate, the control unit 130 adjusts the output of the water pump 516 to correct the flow rate of the cleaning water.

In the present embodiment, the shape of the bottom surface of the sub-tank 600 is described as an example of a substantially square shape, but is not limited thereto. For example, other polygonal shapes may be used, and the shape may be changed according to the balance with surrounding parts and the situation of the installation location.

Further, in the present embodiment, the common electrode 621 and the water level electrode 622 are described as being installed on the front wall and the rear wall, which are opposing wall surfaces, but the present invention is not limited thereto. For example, you may install in the surface different from the above, such as adjacent wall surfaces, such as a front wall and a side wall. Furthermore, the common electrode 621 may be installed on the front wall, and the water level electrode 622 may be installed on the top surface. In this case, the lengths are changed so that the tips of the lower electrode 624 and the upper electrode 623 are at the lower limit water level and the upper limit water level, respectively.

In the present embodiment, the example in which the water level electrode 622 is composed of the upper electrode 623 and the lower electrode 624 has been described, but the present invention is not limited to this. For example, three or more water level electrodes 622 may be arranged, and the water level detection intervals may be divided. Thereby, the accuracy of water level detection and flow rate detection can be further improved.

As described above, the sub-tank of the present embodiment is configured.

<4> Configuration of Heat Exchanger Hereinafter, the configuration of the heat exchanger of the sanitary washing device in the present embodiment will be described with reference to FIGS. 12 and 13.

FIG. 12 is a perspective view showing the appearance of the heat exchanger. FIG. 13 is a cross-sectional view of the heat exchanger.

In the heat exchanger 700 of the present embodiment, the buffer tank 750 is integrally formed, and the buffer tank 750 is installed on the top of the heat exchanger 700.

First, the heat exchanger 700 is formed in a substantially rectangular (including rectangular) flat plate shape when viewed from the front (see FIG. 13). The heat exchanger 700 includes at least a casing 701 formed of reinforced ABS resin obtained by compounding glass fiber with ABS resin, a flat plate heater 702 made of ceramic, a hot water discharge member 703, and the like.

The casing 701 is composed of a front member 710 that constitutes the front part and a back member 720 that constitutes the rear part. The flat heater 702 is installed in a space formed between the front member 710 and the back member 720. The heating channel 715 is formed by a gap between a facing portion between the front member 710 and the flat heater 702 and a facing portion between the back member 720 and the flat heater 702. The heat exchanger 700 configured as described above raises the temperature of the washing water flowing through the heating flow path 715 instantaneously by the flat heater 702.

Further, the heat exchanger 700 includes a water inlet 711 that is a connection port on the right side of the front lower end of the front member 710, and a hot water outlet 712 that is a connection port on the hot water outlet member 703 installed at the upper right side of the front member 710. I have.

Furthermore, as shown in FIG. 13, a water inlet channel 713 connected to the water inlet 711 shown in FIG. 12 is provided over substantially the entire width of the lower end portion of the casing 701. A plurality of slits 714 are provided across the entire width of the upper surface of the water inlet channel 713, and the cleaning water that has flowed into the water inlet channel 713 passes through the slit 714 and flows into the heating channel 715. Note that the slit 714 has a function of allowing the cleaning water to flow evenly over the entire width of the heating flow path 715.

Further, a partition rib 716 is provided at the upper end of the heating channel 715, and a buffer tank 750 is located above the partition rib 716. The partition rib 716 is provided with a plurality of water passage holes 717 over substantially the entire width (including the entire width). As a result, the washing water heated in the heating flow path 715 flows into the buffer tank 750 through the water passage hole 717.

Furthermore, in the buffer tank 750, for example, projections 718 having a substantially semicircular (including semicircular) cross-sectional shape are provided at an interval over substantially the entire width (including the entire width). The protrusion 718 disturbs the flow of the cleaning water flowing in the buffer tank 750 toward the hot water outlet 712. As a result, the wash water is mixed and uneven temperature of the wash water is eliminated, and the wash water having a uniform temperature is discharged from the hot water outlet 712.

The hot water member 703 is provided with two thermistors, a hot water temperature sensor 730 and an excessive temperature sensor 731. Hot water temperature sensor 730 detects the hot water temperature of the wash water. The excessive temperature sensor 731 detects the excessive temperature of the heat exchanger 700. Thereby, the control part 130 controls the temperature of the wash water discharged from the heat exchanger 700.

<5> Configuration of Nozzle Device Hereinafter, the configuration of the nozzle device of the sanitary washing device according to the present embodiment will be described with reference to FIGS. 16 to 28.

FIG. 16 is a perspective view showing a storage state of the nozzle device in the present embodiment. 17 is a cross-sectional view taken along line 17-17 shown in FIG. FIG. 18 is a vertical cross-sectional view showing a storage state of the nozzle device. 19 is a detailed cross-sectional view of a portion B shown in FIG. 20 is a cross-sectional view taken along line 20-20 shown in FIG. FIG. 21 is a cross-sectional view illustrating a storage state of the nozzle device. 22 is a detailed cross-sectional view of a portion C shown in FIG. FIG. 23 is a vertical cross-sectional view showing a state of cleaning the bottom of the nozzle device. 24 is a detailed cross-sectional view of a portion D shown in FIG. FIG. 25 is a longitudinal sectional view showing a bidet cleaning state of the nozzle device. 26 is a detailed cross-sectional view of a portion E shown in FIG. FIG. 27 is a cross-sectional view of the nozzle portion showing the bidet cleaning state of the nozzle device. FIG. 28 is a detailed cross-sectional view of a portion G shown in FIG.

As shown in FIG. 16, the nozzle device 800 includes at least a support part 810, a nozzle part 820, a drive part 860, a flow control valve 517, and the like. The support part 810 is formed of a resin material such as POM (polyoxymethylene) or ABS, and has a substantially triangular (including triangular) frame shape in a side view. The nozzle part 820 moves forward and backward along the support part 810. The driving unit 860 drives the nozzle unit 820 to move forward and backward. The flow control valve 517 switches the supply of cleaning water to the nozzle unit 820.

In the following description of the nozzle device, the arrangement direction of the nozzle unit is the rear, the advance direction of the nozzle unit is the front, the right side is the right and the left side is the left from the rear to the front. Will be explained.

The support portion 810 has an inclined portion 812 that is lowered from the rear portion toward the front portion with respect to a substantially horizontal (including horizontal) base portion 811, and a vertical side portion that joins the bottom portion 811 and the rear end of the inclined portion 812. 813 is formed in a frame shape. The inclined portion 812 includes a guide rail 814 that guides the forward and backward movement of the nozzle portion 820 and a rack guide 815 (see FIG. 17) that guides the flexible rack 861 (see FIG. 17) of the drive portion 860. Included). A substantially cylindrical (cylindrical) holding portion 816 that supports the nozzle portion 820 so as to surround the nozzle portion 820 is integrally formed below the front end of the inclined portion 812.

Also, as shown in FIG. 17, the guide rail 814 for guiding the nozzle portion 820 has a substantially T-shaped cross section (including a T-shape). The rack guide 815 for guiding the flexible rack 861 has a substantially U-shape (including a U-shape) in which one side surface is opened in a cross-sectional view. It has a configuration that guides by regulating the side surface.

The rack guide 815 is also formed continuously from the inclined portion 812 to the vertical side portion 813 and the bottom side portion 811 of the rear portion of the support portion 810. At this time, the corners of the inclined portion 812 and the vertical side portion 813 of the rack guide 815 and the vertical side portion 813 and the bottom side portion 811 are connected in an arc shape, for example. Note that the cross-sectional shape of the rack guide 815 formed in the vertical side portion 813 and the bottom side portion 811 is substantially U-shaped (including a U-shape). On the other hand, the open side surface of the rack guide 815 is open at the left side at the inclined portion 812 and open at the opposite right side at the vertical side portion 813 and the bottom side portion 811. Then, the open surfaces of the vertical side portion 813 and the bottom side portion 811 of the rack guide 815 are closed by, for example, a support portion lid of another member.

The drive unit 860 includes a flexible rack 861 coupled to the nozzle unit 820, a pinion gear 862 that meshes with the flexible rack 861, and a drive motor 863 that rotationally drives the pinion gear 862. The drive unit 860 moves the nozzle unit 820 forward and backward along the guide rail 814.

The drive motor 863 is constituted by a stepping motor, for example, and the rotation angle is controlled by a pulse signal. Then, the flexible rack 861 is driven via the pinion gear 862 by the rotation of the drive motor 863.

A gap is provided between the inner peripheral surface of the holding portion 816 of the support portion 810 and the outer peripheral surface of the nozzle portion 820. The cleaning water ejected from the nozzle portion 820 flows into the gap and cleans the outer peripheral surface of the nozzle portion 820.

In addition, the nozzle lid 801 is provided in a freely openable and closable manner in front of the holding portion 816, and opens and closes when the nozzle portion 820 advances and retracts. Then, by closing the nozzle lid 801 while the nozzle portion 820 is housed, the nozzle portion 820 is prevented from being contaminated with feces or the like.

A water supply joint that connects a water supply tube (not shown) connected to the cleaning water supply unit and a connection tube 802 that supplies cleaning water from the support unit 810 to the flow control valve 517 is connected to the bottom 811 of the support unit 810. 817 is formed.

As shown in FIG. 21, the nozzle portion 820 includes at least a rod-like nozzle body 830 molded from a resin material such as ABS, a nozzle cover 840, a connecting portion 850, and the like. The nozzle cover 840 is formed in a cylindrical shape and covers substantially the entire nozzle body 830 (including the entire body). The connecting portion 850 pulls the nozzle cover 840 with the nozzle body 830.

Further, as shown in FIG. 6, the nozzle body 830 of the nozzle unit 820 includes a butt cleaning unit 831 that cleans the local part, a bidet cleaning unit 832 that cleans the local part of the woman, and a nozzle cleaning unit that cleans the nozzle part 820. 833 and the like.

As shown in FIGS. 23 and 24, the buttocks cleaning unit 831 includes an buttocks cleaning spout 834 that opens upward at the tip of the nozzle body 830, and the buttocks cleaning spout 834 from the rear end of the nozzle body 830. The butt cleaning flow path 835 is in communication. The buttocks cleaning channel 835 is installed on the lower side of the nozzle body 830, and is provided with a bent portion that bends upward below the buttocks cleaning jet outlet 834. Furthermore, a rectifying plate 835a that rectifies the flow of the cleaning water is installed at the bent portion. As a result, the washing water ejected from the buttocks washing ejection port 834 passes through the ejection opening 844 of the nozzle cover 840 and is ejected upward.

As shown in FIGS. 25 and 26, the bidet cleaning unit 832 includes a bidet cleaning jet 836 disposed behind the butt cleaning jet 834 and a bidet cleaning jet 836 from the rear end of the nozzle body 830. It is composed of a bidet cleaning flow path 837 that communicates. Then, the cleaning water ejected from the bidet cleaning ejection port 836 passes through the ejection opening 844 of the nozzle cover 840 and is ejected upward.

In addition, as shown in FIG. 27, the nozzle cleaning unit 833 includes a nozzle cleaning ejection port 838 disposed on the side surface of the nozzle body 830, and a nozzle cleaning flow path communicating with the nozzle cleaning ejection port 838 from the rear end of the nozzle body 830. 839. Then, the cleaning water ejected from the nozzle cleaning ejection port 838 is ejected into the nozzle cover 840 and discharged from the drain port 845 of the nozzle cover 840 to the outside of the nozzle cover 840. Note that the cleaning water ejected from the nozzle cleaning ejection port 838 is used for cleaning the nozzle portion 820 and its surroundings.

Furthermore, the front of the nozzle part 820 is supported in a state of being inserted into the holding part 816 of the support part 810, and the rear part of the nozzle part 820 is slidably installed in a state of being suspended on the guide rail 814. The nozzle unit 820 includes a storage position in which the nozzle unit 820 illustrated in FIG. 16 is stored behind the holding unit 816, and a buttocks cleaning position in which the nozzle unit 820 illustrated in FIG. 23 protrudes from the holding unit 816. It is configured to be able to advance and retreat between the bidet cleaning positions shown in FIG.

The nozzle cover 840 includes a nozzle cover main body 841 and a connecting member 842. The nozzle cover main body 841 is formed, for example, by forming a thin stainless steel plate into a cylindrical shape, with the front end surface being a closed surface and the rear end surface being an open surface. The connecting member 842 is formed in a substantially cylindrical shape (including a cylindrical shape) formed of a resin material such as ABS, and includes connecting pieces 843 that engage with the nozzle body 830 on both sides.

Further, a nozzle cover stopper (not shown) for restricting the sliding range of the nozzle cover 840 is integrally formed on the right side of the rear end of the connecting member 842. The sliding range of the nozzle cover 840 is configured to be regulated by contacting a front stopper receiving portion (not shown) and a rear stopper receiving portion (not shown) formed on the support portion 810. Yes.

Further, a part of the connecting member 842 is fixed and integrated in a state of being inserted into the nozzle cover main body 841 through the opening at the rear end of the nozzle cover main body 841.

In addition, on the front upper surface of the nozzle cover main body 841, there is provided one jet opening 844 in which the bottom cleaning jet outlet 834 and the bidet cleaning jet outlet 836 of the nozzle main body 830 can face each other. On the front lower surface of the nozzle cover main body 841, a drain port 845 for discharging the cleaning water that has flowed into the nozzle cover main body 841 to the outside is provided.

The inner diameter of the nozzle cover 840 has a dimension slightly larger than the outer diameter of the nozzle body 830. Thus, the nozzle body 830 and the nozzle cover 840 are configured to be able to slide smoothly with each other in a state where the nozzle body 830 is inserted into the nozzle cover 840.

Further, a flow control valve 517 is installed on the rear end surface of the nozzle body 830. The flow control valve 517 includes a disk-type valve main body 517a and a stepping motor 517b that drives a switching operation. The flow control valve 517 selectively switches between the buttocks cleaning channel 835, the bidet cleaning channel 837, and the nozzle cleaning channel 839 to supply cleaning water.

Further, a water supply port 517c for supplying cleaning water to the flow control valve 517 is installed on the outer surface of the valve main body 517a of the flow control valve 517, and the water supply port 517c is joined to the water supply joint 817 of the support portion 810 by a connection tube 802. Communicate.

Hereinafter, a connecting portion 850 including the connecting member 842 of the nozzle cover 840 and the connection receiving portion 851 of the nozzle body 830 in the present embodiment will be described with reference to FIGS.

22 and 28, a connection receiving portion 851 is formed on the right side of the outer periphery of the rear end portion of the nozzle body 830. The connection receiving portion 851 is formed in a substantially V-shaped (including V-shaped) front front recessed portion 851a and rear rear recessed portion 851b, and is arranged with a space in the front and rear. The interval between the front recessed portion 851a and the rear recessed portion 851b is set to be equal to the interval between the buttocks cleaning ejection port 834 and the bidet cleaning ejection port 836.

On the other hand, the connecting member 842 of the nozzle cover 840 is formed of a substantially cylindrical (including cylindrical) resin material such as ABS or POM, and has rear connecting portions 843 that protrude rearward. A substantially V-shaped (including a V-shaped) connection protrusion 843 a that protrudes inward is formed at the rear end of the connection piece 843.

When the nozzle body 830 is inserted into the nozzle cover 840, the connection protrusion 843a of the connection member 842 of the nozzle cover 840 is constantly pressed against the connection receiving portion 851 of the nozzle body 830 by elasticity. At this time, when the connection protrusion 843a is engaged with the front recess 851a or the rear recess 851b, the nozzle body 830 and the nozzle cover 840 are connected. As a result, the nozzle cover 840 can be pulled and moved by the nozzle body 830.

As shown in FIG. 22, in the state in which the connecting projection 843a enters the front recess 851a, as shown in FIG. 26, the bidet cleaning outlet 836 of the nozzle body 830 and the outlet opening 844 of the nozzle cover 840 face each other. It will be in the state. On the other hand, as shown in FIG. 28, in the state where the connecting projection 843a enters the rear recessed portion 851b, as shown in FIGS. 19 and 24, the buttocks cleaning jet outlet 834 and the jet opening 844 are opposed to each other. . Thereby, washing water can be spouted from a predetermined spout.

<6> Configuration of Toilet Lid The configuration of the toilet lid of the sanitary washing device according to the present embodiment will be described below with reference to FIGS.

FIG. 29 is a perspective view showing a state in which the toilet lid is disassembled upside down. FIG. 30 is a perspective view showing a state in which the toilet lid is assembled upside down. 31 is a cross-sectional view taken along line 31-31 shown in FIG. 32 is a cross-sectional view taken along line 32-32 shown in FIG.

29, the toilet lid 320 of the present embodiment includes at least a toilet lid main body 330, a toilet lid inner surface member 340, a heat insulating material 350, a buffer member 351, and the like. At this time, the toilet lid main body 330 and the toilet lid inner surface member 340 are formed by integral molding with, for example, polypropylene resin (PP). The heat insulating material 350 is made of, for example, a polystyrene material. The buffer member 351 is formed of, for example, a thermoplastic elastomer resin (TPE) which is a soft resin material having elasticity.

The toilet lid body 330 includes an upper surface portion 331 having a substantially semi-elliptical shape (including a semi-elliptical shape), and side portions 332 integrally formed on the front and both sides of the outer periphery of the upper surface portion 331. . The planar shape of the upper surface portion 331 of the toilet lid body 330 is substantially similar to the outer shape of the toilet seat 300 shown in FIG. 1 (including similar shapes). In the closed state of the toilet lid 320, the entire upper surface of the toilet seat 300 is covered. Further, the side surface portion 332 of the toilet lid body 330 is formed in a shape that covers a part of the side surface of the toilet seat 300.

At two locations on the front inner surface of the upper surface portion 331 of the toilet lid main body 330, a holding portion 333 that holds the toilet lid inner surface member 340 and the buffer member 351 is formed.

Also, a cylindrical bearing portion 334 that is fitted to a rotating shaft provided in the main body 200 is integrally formed at both rear end portions of the side surface portion 332. And the bearing part 334 of the side part 332 can be attached to and detached from the rotating shaft of the main body 200 by expanding the side part 332 using the elasticity of the resin material.

Furthermore, an engaging portion 334 a that engages the rear end of the toilet lid inner surface member 340 is integrally formed at a joint portion between each bearing portion 334 and the upper surface portion 331.

Further, the toilet lid inner surface member 340 is integrally formed with at least a flat portion 341, side ribs 342, reinforcing ribs 343, and the like. The flat surface portion 341 is formed in a substantially similar shape (including a similar shape) to the upper surface portion 331 of the toilet lid main body 330. The side ribs 342 are formed by being cut and raised at right angles on both sides of the flat surface portion 341. The reinforcing rib 343 is provided on the outer surface of the side rib 342 and reinforces the strength of the side rib 342.

Furthermore, in the state shown in FIG. 29, the outer periphery of the front portion and both side portions of the flat portion 341 is formed in a curved shape upward, and a thin joint side 347 is formed toward the tip of the flat portion 341. Yes. In addition, when the toilet lid main body 330 and the toilet lid inner surface member 340 are assembled by providing the joining side 347, the adhesiveness of an outer periphery can be improved.

The flat portion 341 of the toilet lid inner surface member 340 is integrally formed with two connecting portions 344 that are coupled to the holding portion 333 formed on the toilet lid main body 330 at two front positions. A screw hole is opened at the center of the coupling portion 344. The toilet lid main body 330 and the toilet lid inner surface member 340 are configured to be fixed by screws 322. Further, on both side portions of the rear end portion of the toilet lid inner surface member 340, engagement pieces 345 that are engaged with engagement portions 334a formed on the toilet lid body 330 are formed.

In addition, as shown in FIG. 29, with the surface facing the toilet lid main body 330 shown in FIG. 30 facing down, recessed portions 346 that are recessed upward are formed on both sides of the flat portion 341 of the toilet lid inner surface member 340. Is formed. The recessed portion 346 is formed from the rear end of the flat surface portion 341 of the toilet lid inner surface member 340 to the vicinity of the front end.

In addition, as shown in FIG. 31, the toilet lid body 330 and the toilet lid inner surface member 340 are usually configured such that a small gap 321 of, for example, 1 mm or less is formed in the plane portion 341. However, there may be a part that abuts partially due to variations in the shape of the molded member. In the recessed portion 346, a gap 321 of about 3 cm at the maximum is formed between the toilet lid main body 330 and the toilet lid inner surface member 340.

The heat insulating material 350 is formed in a plate shape having a substantially rectangular shape (including a rectangle) in plan view. Specifically, the heat insulating material 350 is molded into a shape that can be accommodated in the recessed portion 346 of the toilet lid inner surface member 340. Thereby, the heat insulating material 350 is accommodated in the gap 321 formed by the toilet lid main body 330 and the toilet lid inner surface member 340.

Further, as shown in FIG. 32, the buffer member 351 is configured by integrally molding a leg portion 351 a inserted into the holding portion 333 of the toilet lid body 330 and an abutting portion 351 b that abuts on the upper surface of the toilet seat 300. ing. The buffer member 351 alleviates an impact when the toilet lid 320 and the toilet seat 300 come into contact with each other. The leg portion 351a of the buffer member 351 is configured not to easily come off by being press-fitted into the holding portion 333 of the toilet lid body 330. Therefore, the contact part 351b is formed with a size larger than the leg part 351a.

Hereinafter, the assembly of the toilet lid 320 configured as described above will be specifically described.

First, two heat insulating materials 350 are arranged at predetermined positions on the inner surface of the toilet lid body 330. In this state, the engaging piece 345 of the toilet lid inner surface member 340 is engaged with the engaging portion 334 a of the toilet lid main body 330. Accordingly, the rear portion of the toilet lid inner surface member 340 is engaged with the toilet lid main body 330 in a state where the heat insulating material 350 is housed.

Next, as shown in FIG. 32, the connecting portion 344 of the toilet lid inner surface member 340 is engaged with the holding portion 333 of the toilet lid main body 330 and fixed with a screw 322. Thereby, the toilet lid inner surface member 340 and the toilet lid main body 330 are fixed via the screw 322.

Next, the buffer member 351 is press-fitted into the holding portion 333 after being fixed with the screw 322. Thereby, the buffer member 351 is fixed to the holding portion 333.

That is, as shown in FIGS. 31 and 32, when the toilet lid main body 330, the toilet lid inner surface member 340, and the buffer member 351 are assembled, the joint side 347 of the toilet lid inner surface member 340 and the inner surface of the toilet lid main body 330 are Is almost in close contact. Thereby, the flow of air inside the gap 321 formed between the toilet lid main body 330 and the toilet lid inner surface member 340 is suppressed. As a result, the heat insulating effect of the toilet lid 320 is improved.

As described above, according to the sanitary washing apparatus of the present embodiment, the partition wall is provided in the sub tank, the water tank and the storage tank are formed, and the air opening is provided on the top surface of the sub tank. Thereby, at least a part of air is separated while the washing water containing the air flowing in from the water inlet near the bottom of the water tank rises in the water tank. The separated air is discharged out of the sub tank through the atmosphere opening. On the other hand, the wash water with the reduced air content flows over the partition wall into the storage tank. And the wash water with which air content was reduced is discharged from the water outlet near the bottom part of a storage tank. Therefore, washing water with a low air content is supplied to the heat exchanger. Thereby, the bubble which generate | occur | produces in a heat exchanger can be reduced, and the thermal efficiency of a heat exchanger can be improved. As a result, it is possible to reduce damage to the heat exchanger and improve durability.

In addition, according to the sanitary washing device of the present embodiment, a water flow change is detected by a water level detection sensor provided in the sub tank without separately providing a dedicated flow rate sensor for detecting the flow rate in the water circuit. Calculate. Thereby, while being able to simplify the structure of a water circuit, cost reduction can be aimed at.

Further, according to the sanitary washing device of the present embodiment, the common electrode of the water level detection sensor provided in the sub tank and the water level electrode are installed on different surfaces. Thereby, it can suppress that the residual water adhering to the inner surface of a tank main body misdetects as stored water. As a result, the detection accuracy and reliability of the water level detection sensor can be improved.

In addition, according to the sanitary washing device of the present embodiment, the motor unit with less vibration of the water pump is installed in the water pump installation unit of the chassis via the cushioning member made of foamed resin having elasticity. The buffer tank is connected via a connection tube. Thereby, it can suppress that the vibration generate | occur | produced at the time of the drive of a water pump is transmitted to a chassis, another member, or a main body.

(Embodiment 2)
Below, the structure of the sanitary washing apparatus in this Embodiment 2 is demonstrated using FIGS. 33-36.

FIG. 33 is a perspective view showing the appearance of the sub tank in the second embodiment of the present invention. FIG. 34 is a cross-sectional view in the lateral direction of the sub-tank in the same embodiment. FIG. 35 is a cross-sectional view in the front-rear direction of the sub-tank in the same embodiment. FIG. 36 is a schematic view of the top surface portion of the sub-tank in the full state in the same embodiment.

That is, the sanitary washing device of the present embodiment is different from the first embodiment in the configuration of the sub tank. In addition, since the other structure of the sanitary washing apparatus is the same structure as Embodiment 1, detailed description is abbreviate | omitted. Further, the same components as those in the first embodiment will be described with the same reference numerals.

As shown in FIG. 33, the sub tank 650 of the sanitary washing device according to the present embodiment is composed of at least a tank body 660, a water level detection sensor 620, an incoming water temperature sensor 630, and the like. The tank body 660 is formed by molding a resin material such as ABS. The water level detection sensor 620 detects the level of the cleaning water stored in the tank body 660. The incoming water temperature sensor 630 is composed of, for example, a thermistor and detects the temperature of the cleaning water supplied into the tank body 660.

The tank main body 660 is composed of two members such as a front tank 661 constituting the front wall, both side walls, the bottom surface, and the top surface of the tank, and a rear tank 662 constituting the rear wall of the tank. The overall shape of the tank main body 660 is formed by a plurality of planes including a front wall, a rear wall, both side walls, a bottom surface, and a top surface as in the first embodiment, and is viewed in plan view as shown in FIG. The shape of the case is substantially rectangular (including a square). The front wall of the front tank 611 includes an inclined portion that retreats from the middle. That is, as shown in FIG. 35, the shape when seen in a side view is formed in a substantially trapezoidal shape (including a trapezoidal shape) whose upper part is thinner than the lower part. As a result, the upper cross-sectional area of the tank body 660 is smaller than the lower cross-sectional area.

Further, a water inlet 601 is provided at the lower part of one side wall of the tank body 660, and a water outlet 602 is provided at the lower part of the rear wall of the tank body 660.

Furthermore, an air opening 603 that communicates the inside and the outside of the tank body 660 is provided at the upper part of the side wall of the tank body 660. The air release port 603 discharges air accumulated in the tank body 660 to the outside, and constantly maintains the internal pressure of the tank body 660 at atmospheric pressure. Thereby, the inside of the sub tank 650 is always maintained at atmospheric pressure, and the cleaning water supply flow path 900 (see FIG. 6) from the downstream of the sub tank 650 to the water inlet 516d of the water pump 516 is also maintained at atmospheric pressure. Therefore, the water pump 516 can absorb water without being affected by fluctuations in water pressure. As a result, the water pump 516 can exhibit a stable pump function.

Further, as shown in FIG. 34, at least a partition wall 663 and a rectifying unit 665 are provided inside the water inlet 601 of the tank main body 660. The partition wall 663 is formed upright from the bottom surface at a position facing the water inlet 601. The rectifying unit 665 includes a rectifying rib 664 that extends from the side wall in a substantially L shape (including an L shape) so as to cover the partition wall 663.

Furthermore, the rectifying unit 665 is composed of an inflow tank 665a and an outflow path 665b, and is formed over the entire width of the side wall of the tank body 660. The inflow tank 665a is formed of a side wall and a partition wall 663. The outflow path 665 b is formed by a partition wall 663 and a rectifying rib 664.

Hereinafter, the flow of the cleaning water in the sub tank 650 will be described.

Wash water that has flowed in from the water inlet 601 of the sub tank 600 first flows into the lower portion of the inflow tank 665a of the rectifying unit 665. The washing water that has flowed in has its flow velocity reduced while it rises in the inflow tank 665a. The washing water with the reduced flow velocity passes over the upper end of the partition wall 663 and flows into the outflow path 665b. Then, the washing water flows downward into the tank main body 660 from the lower end of the outflow passage 665b that is the lower end of the rectifying rib 664.

At this time, when the pressure of the cleaning water flowing in from the water inlet 601 is high, or when the flow is disturbed including a large amount of air, the flow of the cleaning water is rectified in the rectifying unit 665. Then, rectified cleaning water flows into the tank body 660 and is stored. As a result, the air contained in the washing water is separated during the storage, and discharged from the atmosphere opening 603 to the outside of the tank body 660.

As described above, the washing water flows in the sub tank 650.

Further, as shown in FIGS. 33 to 36, the sub tank 650 includes a common electrode 671 that is formed of a stainless material and serves as a common electrode, and a plurality of water level electrodes 672 that are installed for each water level. A water level detection sensor 620 is provided. In the present embodiment, as in the first embodiment, an example in which one common electrode 671 and two water level electrodes 672 are configured is shown.

The common electrode 671 is disposed on the inner surface of the lower portion of the front wall of the tank main body 660, and the water level electrode 672 is disposed on the inner surface of the top surface of the tank main body 660. At this time, the water level electrode 672 is composed of an upper electrode 673 and a lower electrode 674 which are installed to hang down from the top surface. The upper electrode 673 is arranged at a position where the length of the electrode is short and the tip is high. On the other hand, the lower electrode 674 is disposed at a position where the electrode is long and the tip is low. The common electrode 671 is disposed at a position lower than the tip of the lower electrode 674 of the water level electrode 672 and is always immersed in a normal use state.

Further, as shown in FIGS. 34 and 36, two concave portions 667 are formed on the top surface of the tank body 660 by two downward ribs 666. When the water level in the tank body 660 rises from the lower end of the rib 666, the recessed portion 667 is sealed by the water surface 651 to form a space in which air is stored. Thereby, even when the sub tank 650 is full, a sealed space 668 that is not submerged with the cleaning water is formed in at least a part of the recessed portion 667.

At this time, the upper electrode 673 and the lower electrode 674 are respectively installed on the top surface which is the highest position of the recessed portion 667. And the base part of the upper electrode 673 and the lower electrode 674 is arrange | positioned in the sealed space 668 formed when a water level rises.

That is, by disposing the upper electrode 673 and the lower electrode 674 in the sealed space 668, the base portions of the upper electrode 673 and the lower electrode 674 are not always in direct contact with the cleaning water. Therefore, in a state where the tips of the upper electrode 673 and the lower electrode 674 are separated from the water surface 651, the residual water adhering to the base portion of the upper electrode 673 and the lower electrode 674 and the inner surface of the tank body 660 is reliably separated. Become. As a result, it is possible to prevent erroneous detection of residual water adhering to the inner surface of the tank body 660 as stored water.

Further, in this embodiment, a rectifying unit 665 is provided inside the water inlet 601 of the tank body 660. Therefore, erroneous detection of the water level due to the washing water flowing in from the water inlet 601 jumping and adhering to the water level electrode 672 can be prevented. Furthermore, it is possible to suppress the occurrence of waves on the water surface when the water level in the tank body 660 rises. As a result, the accuracy of water level detection can be further improved.

In the present embodiment, two concave portions are provided on the top surface of the tank body, and two sealed spaces are formed, and the upper electrode and the lower electrode are installed in separate sealed spaces as an example. Although explained, it is not limited to this. For example, one sealed space may be formed on the top surface of the tank body, and the upper electrode and the lower electrode may be installed in the same sealed space.

In the present embodiment, the common electrode is installed on the front wall of the tank body, and only two water level electrodes are installed in the sealed space on the top surface. However, the present invention is not limited to this. For example, it is good also as a structure which installs all the electrodes in the sealed space of a top | upper surface. In the case of this configuration, erroneous detection due to residual water can be prevented more reliably.

As described above, the sanitary washing device of the present invention includes a nozzle device that ejects washing water, a washing water supply channel that supplies washing water to the nozzle device, and a control unit. The cleaning water supply flow path includes a water pump for supplying cleaning water to the nozzle device, a heat exchanger upstream of the water pump for heating the cleaning water, and a cleaning water supply upstream of the heat exchanger. A sub-tank that opens part of the flow path to the atmosphere. The sub-tank is disposed near the bottom of the storage tank, the atmosphere opening port disposed on the upper surface, the water tank divided and formed by the partition wall, the storage tank, the water inlet disposed near the bottom of the water tank It has a water outlet. And it is good also as a structure which the wash water which flowed into the water tank from the water inlet of the sub tank flows into the storage tank over the upper end of a partition wall.

Thus, at least a part of the washing water containing air flowing in from the water inlet near the bottom of the water tank of the sub tank is separated while rising in the water tank. The separated air is discharged out of the sub-tank through the atmosphere opening, and the air content of the washing water is reduced. Wash water with reduced air content flows over the partition wall and into the storage tank. And the wash water with which air content was reduced flows out from the water outlet near the bottom part of a storage tank, and is supplied to a heat exchanger. That is, cleaning water with reduced air content is supplied to the heat exchanger. Thereby, generation | occurrence | production of the bubble in a heat exchanger can be reduced and the thermal efficiency of a heat exchanger can be improved. As a result, a sanitary washing device that can reduce damage to the heat exchanger and improve durability can be realized.

Further, the sub tank of the sanitary washing device of the present invention may include a barrier protruding from the inner wall of the sub tank between the upper surface opening of the water tank and the atmosphere opening.

Therefore, even when the pressure of the washing water flowing in from the water inlet is high or the flow is significantly disturbed including a large amount of air, the washing water can suppress the upward flow by the barrier. As a result, it is possible to prevent the cleaning water from flowing out of the sub tank through the air opening.

The sanitary washing device of the present invention may include a partition wall and a plurality of rectifying ribs that protrude alternately from the inner wall of the sub tank facing the partition wall.

This allows the flow to be appropriately rectified by the flow straightening rib even when the pressure of the wash water flowing from the water inlet is high or the flow is significantly disturbed including a large amount of air. As a result, the air contained in the wash water is separated by the vortex generated on the downstream side of the flow regulating rib, and the air contained in the wash water can be reduced.

Further, the sub tank of the sanitary washing device of the present invention further includes a water level detection sensor for detecting the level of the cleaning water stored in the sub tank. The water level detection sensor includes a common electrode and a plurality of water level electrodes on the inner surface of the sub tank. A control part has the structure which applies a direct current between a common electrode and a water level electrode, and detects a water level by the change of a voltage. The common electrode of the water level detection sensor and the water level electrode may be arranged on different surfaces.

This can suppress erroneous detection of residual water adhering to the inner surface of the sub-tank as stored water. That is, the detection accuracy and reliability of the water level detection sensor are improved. Thereby, the overflow from a sub tank can be prevented reliably. As a result, a sanitary washing device with high safety and reliability can be realized.

In addition, the sanitary washing device of the present invention may be disposed on the surface facing the common electrode and the water level electrode.

This ensures that the common electrode and the water level electrode are placed at the maximum separation. Therefore, erroneous detection due to residual water adhering to the inner surface of the sub tank can be more reliably suppressed. As a result, the detection accuracy and reliability of the water level detection sensor can be improved.

The sub-tank of the sanitary washing device of the present invention is formed of a part of the top surface and the surface of the wash water to be stored, and further includes a sealed space in which the wash water is not submerged, and the water level electrode forms a sealed space. You may arrange on the top.

This allows the water level electrode and the residual water adhering to the inner surface of the sub tank to be reliably separated. For this reason, it is possible to prevent the residual water adhering to the inner surface of the sub tank from being erroneously detected as stored water. As a result, the detection accuracy and reliability of the water level detection sensor can be further improved.

Further, in the sanitary washing device of the present invention, the control unit may apply the DC current by periodically inverting the polarity of the direct current between the common electrode and the water level electrode.

This makes it possible to suppress the deterioration and deterioration of the electrode by suppressing the oxidation and elution of the metal forming the electrode by the action of electrolysis. As a result, it is possible to realize a sanitary washing device having excellent reliability over a long period of time.

The present invention can effectively reduce the air contained in the washing water of the sub tank of the sanitary washing device. Therefore, it is applicable also to uses, such as other water supply equipment directly connected to water supply piping.

DESCRIPTION OF SYMBOLS 1 Water supply pipe 2 Branch tap 3,511 Strainer 4,512 Check valve 5,513 Constant flow valve 6,514 Stop water solenoid valve 7 Flow sensor 8, 10 Temperature sensor 9,700 Heat exchanger 11 Pump 12 Switching valve 13 Nozzle unit 100 Sanitary washing device 110 Toilet bowl 120 Deodorizing device 130 Control unit 200 Main body 201 Rear main body case 210 Operation unit 211 Infrared receiving unit 220 Operation switch 221 Butt cleaning switch 222 Nozzle cleaning switch 230 Setting switch 231 Hot water temperature switch 232 Toilet seat temperature switch 233 8-hour switch 234 Power saving switch 235 Toilet lid automatic open / close switch 240 Indicator lamp 300 Toilet seat 320 Toilet lid 321 Gap 330 Toilet lid body 331 Upper surface portion 332 Side surface portion 333 Holding portion 334 Bearing portion 334 Engagement part 340 Toilet lid inner surface member 341 Flat surface part 342 Side surface rib 343 Reinforcement rib 344 Coupling part 345 Engagement piece 346,667 Recessed part 347 Joining side 350 Heat insulating material 351 Buffer member 351a Leg part 351b Abutting part 360 Movement mechanism 400 Remote controller 401 Remote control body 402 Transmitter 410 Bottom cleaning switch 411 Bidet cleaning switch 412 Stop switch 413 Move cleaning switch 414 Rhythm cleaning switch 415 Cleaning strength switch 416 Cleaning position switch 417 Nozzle disinfection switch 418 Toilet lid switch 419 Toilet seat switch 421 Strength indicator lamp 422 Position indicator lamp 450 Human body detection sensor 500 Cleaning section 501 Chassis 501a Water pump installation section 501b Leg section 502 Connection tube DESCRIPTION OF SYMBOLS 10 Water supply connection port 515 Relief valve 516 Water pump 516a Motor part 516b Link mechanism part 516c Piston part 516d Water intake port 516e Discharge port 517 Flow control valve 517a Valve body 517b Stepping motor 517c Water supply port 600, 650 Water supply port 6001 Air opening 610,660 Tank body 611,661 Front tank 612,662 Rear tank 613 Air opening 613a Buffer 614,663 Partition wall 615 Water tank 615a Upper surface opening 616 Reservoir 617 Barrier 618,664 Rectification rib 620 Water level Detection sensor 621, 671 Common electrode 622, 672 Water level electrode 623, 673 Upper electrode 624, 674 Lower electrode 630 Incoming temperature sensor 651 Water surface 6 65 Rectification part 665a Inflow tank 665b Outflow path 666 Rib 668 Sealed space 701 Casing 702 Flat heater 703 Hot water outlet member 710 Front surface member 711 Water inlet 712 Hot water outlet 713 Water inlet 714 Slit 715 Heating flow path 716 Water outlet 717 Projection 720 Back member 730 Hot water temperature sensor 731 Excess temperature sensor 750 Buffer tank 800 Nozzle device 801 Nozzle lid 802 Connection tube 810 Support portion 811 Bottom side 812 Inclined portion 813 Vertical side portion 814 Guide rail 815 Rack guide 817 Holding portion 817 Water supply Joint 820 Nozzle part 830 Nozzle body 831 Butt washing part 832 Bidet washing part 833 Nozzle cleaning part 834 Butt washing outlet 835 Butt washing flow path 8 5a Current plate 836 Bidet cleaning outlet 837 Bidet cleaning channel 838 Nozzle cleaning outlet 839 Nozzle cleaning channel 840 Nozzle cover body 841 Nozzle cover body 842 Connection member 843 Connection piece 843a Connection projection 844 Ejection opening 845 Drainage port 850 Connection unit 851 Connection Receiving part 851a Front recessed part 851b Rear recessed part 860 Drive part 861 Flexible rack 862 Pinion gear 863 Drive motor 900 Washing water supply flow path

Claims (7)

1. A nozzle device for jetting cleaning water;
   A cleaning water supply channel for supplying the cleaning water to the nozzle device;
   A control unit,
   The washing water supply channel is
   A water pump for feeding the cleaning water to the nozzle device;
   A heat exchanger upstream of the water pump for heating the wash water;
   A sub tank on the upstream side of the heat exchanger and opening a part of the washing water supply flow path to the atmosphere,
   The sub tank is
   An air opening arranged on the upper surface;
   A water tank divided by a partition wall, a storage tank,
   A water inlet arranged near the bottom of the water tank;
   A water outlet arranged near the bottom of the storage tank,
   The sanitary washing device having a configuration in which the wash water that has flowed into the water tank from the water inlet flows into the reservoir tank beyond the upper end of the partition wall.
2. The sub tank is
   The sanitary washing device according to claim 1, further comprising a barrier protruding from an inner wall of the sub tank between an upper surface opening of the water tank and the atmosphere opening.
3. The water tank is
   The sanitary washing device according to claim 1, further comprising a plurality of rectifying ribs that alternately protrude from the partition wall and an inner wall of the sub tank facing the partition wall.
4. The sub tank further includes a water level detection sensor for detecting the level of the cleaning water stored in the sub tank,
   The water level detection sensor includes a common electrode and a water level electrode on the inner surface of the sub tank,
   The control unit is configured to apply a direct current between the common electrode and the water level electrode and detect the water level by a change in voltage,
   The sanitary washing device according to claim 1, wherein the common electrode and the water level electrode are arranged on different surfaces.
5. The sanitary washing device according to claim 4, wherein the common electrode and the water level electrode are arranged on opposite surfaces.
6. The sub tank further includes a sealed space formed by a part of the top surface of the sub tank and a surface of the cleaning water stored in the sub tank in a full water state, in which the cleaning water is not submerged,
   The sanitary washing device according to claim 4, wherein the water level electrode is arranged on the top surface forming the sealed space.
7. The sanitary washing device according to claim 4, wherein the control unit applies a DC current having a polarity reversed periodically between the common electrode and the water level electrode.

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