WO2015072075A1 - 衛生洗浄装置 - Google Patents

衛生洗浄装置 Download PDF

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Publication number
WO2015072075A1
WO2015072075A1 PCT/JP2014/005166 JP2014005166W WO2015072075A1 WO 2015072075 A1 WO2015072075 A1 WO 2015072075A1 JP 2014005166 W JP2014005166 W JP 2014005166W WO 2015072075 A1 WO2015072075 A1 WO 2015072075A1
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WO
WIPO (PCT)
Prior art keywords
water
cleaning
water level
nozzle
heat exchanger
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Application number
PCT/JP2014/005166
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English (en)
French (fr)
Japanese (ja)
Inventor
喬行 里井
奥井　昇
浅田　隆生
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to CN201480061673.6A priority Critical patent/CN105723035B/zh
Priority to JP2015547613A priority patent/JP6322816B2/ja
Publication of WO2015072075A1 publication Critical patent/WO2015072075A1/ja

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/08—Devices in the bowl producing upwardly-directed sprays; Modifications of the bowl for use with such devices ; Bidets; Combinations of bowls with urinals or bidets; Hot-air or other devices mounted in or on the bowl, urinal or bidet for cleaning or disinfecting

Definitions

  • the present invention relates to a configuration for preventing air-blow of a heat exchanger in a sanitary washing device for washing a human body part.
  • the sanitary washing device described in Patent Document 1 has a flow sensor installed upstream of the heat exchanger as a configuration for preventing the heat exchanger from being aired. And it is confirmed that the wash water is normally supplied to the heat exchanger by detecting the predetermined flow rate with the flow rate sensor. As a result, driving of the heat exchanger is started to prevent idling.
  • FIG. 33 is a schematic diagram showing a configuration of a water circuit of a conventional sanitary washing device.
  • the water circuit of the conventional sanitary washing device is composed of a water supply electromagnetic valve 1, a flow rate sensor 2, a heat exchanger 3, a water pump 4, a nozzle device 5, and the like. Furthermore, the control part 6 which controls those functions is provided.
  • the sanitary washing apparatus having a conventional configuration is provided with a flow sensor to prevent the heat exchanger from being blown.
  • the flow sensor is large in size and has a high member cost. For this reason, the conventional sanitary washing apparatus still has room for improvement from the viewpoint of simplification of the structure of the water circuit and cost reduction.
  • the present invention provides a sanitary washing apparatus that can ensure the safety and durability of a heat exchanger with a simple configuration and at a low cost without separately providing a flow sensor.
  • 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, a control unit, and an operation unit that operates the 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 a part of the flow path to the atmosphere.
  • the sub tank includes a water level detection sensor that detects an upper limit water level and a lower limit water level of cleaning water stored in the sub tank.
  • control unit continues to supply water to the sub tank for a predetermined time from the time when the water level detection sensor first detects the upper limit water level, and thereafter to the sub tank when the water level detection sensor detects the upper limit water level. The water supply is stopped.
  • FIG. 1 is a perspective view of a state in which a sanitary washing device according to an embodiment of the present invention is installed in a toilet bowl.
  • FIG. 2 is a perspective view of the sanitary washing device with the front body case removed.
  • FIG. 3 is a perspective view of the sanitary washing device with a front main body case and a control unit 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 a cleaning unit of the sanitary cleaning device.
  • FIG. 7 is a perspective view showing an exploded state of the water circuit of the sanitary washing device.
  • FIG. 1 is a perspective view of a state in which a sanitary washing device according to an embodiment of the present invention is installed in a toilet bowl.
  • FIG. 2 is a perspective view of the sanitary washing device with the front body case removed.
  • 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 as viewed from the front.
  • FIG. 11 is a cross-sectional view of the sub tank as viewed from the side.
  • FIG. 12 is a graph showing changes in output voltage and threshold values between the upper limit electrode and the common electrode.
  • FIG. 13 is a graph showing a change in output voltage and a threshold value between the lower limit electrode and the common electrode.
  • FIG. 14 is a perspective view showing the appearance of the heat exchanger.
  • FIG. 15 is a cross-sectional view of the heat exchanger.
  • FIG. 16 is a perspective view showing the appearance of the water pump.
  • FIG. 17 is a cross-sectional view of the water pump.
  • FIG. 18 is a perspective view showing an appearance of the nozzle device in the housed state.
  • 19 is a cross-sectional view taken along line 19-19 shown in FIG.
  • FIG. 20 is a vertical cross-sectional view of the storage state of the nozzle device.
  • FIG. 21 is a detailed cross-sectional view of a portion B shown in FIG.
  • FIG. 22 is a cross-sectional view taken along line 22-22 shown in FIG.
  • FIG. 23 is a cross-sectional view of the nozzle device in the stored state.
  • FIG. 24 is a detailed cross-sectional view of a portion C shown in FIG.
  • FIG. 25 is a vertical cross-sectional view showing a state where the nozzle device is cleaned.
  • FIG. 26 is a detailed cross-sectional view of a portion D shown in FIG.
  • FIG. 27 is a longitudinal sectional view showing a bidet cleaning state of the nozzle device.
  • FIG. 28 is a detailed cross-sectional view of a portion E shown in FIG.
  • FIG. 29 is a cross-sectional view showing a bidet cleaning state of the nozzle device.
  • FIG. 30 is a detailed cross-sectional view of a portion G shown in FIG.
  • FIG. 31 is a time chart of the cleaning unit during the initial use of the sanitary cleaning device.
  • FIG. 32 is a time chart of the cleaning unit during normal use of the sanitary cleaning device.
  • FIG. 33 is a schematic diagram showing a configuration of a water circuit of a conventional sanitary washing device.
  • FIG. 1 is a perspective view of a sanitary washing device according to an embodiment of the present invention 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.
  • the sanitary washing device 100 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.
  • 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
  • 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.
  • 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.
  • the toilet lid 320 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.
  • 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.
  • 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 composed of, for example, a weight type seating sensor, and the switch is opened and closed by a change in weight caused by the 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.
  • the main body 200 includes a sub tank 600, a heat exchanger 700, a cleaning device 500 including a nozzle device 800 for cleaning a local part of the human body, and a deodorizing odor during defecation.
  • the deodorizing device 120 that controls the function and the control unit 130 that controls each function of the sanitary washing device 100 are incorporated. Details of the cleaning unit 500 will be described later.
  • the nozzle device 800 which is a main component of the cleaning unit 500, is installed at the center of the main body 200, and the deodorizing device 120 is installed on the left side of the nozzle device 800. Furthermore, a toilet seat toilet lid rotation mechanism 360 that opens and closes the toilet seat 300 and the toilet lid 320 is provided on the left 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.
  • a plurality of switches and indicator lamps 240 for operating and setting each function of the sanitary washing device 100 are installed on the upper surface of the operation unit 210.
  • 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.
  • 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 butt 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.
  • 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.
  • 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.
  • a transmission unit 402 that transmits an operation signal of the remote controller 400 to the main body 200 by infrared rays is arranged.
  • a control board 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 incorporated.
  • a butt cleaning switch 410 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 bidet washing for washing the female local area.
  • 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.
  • a 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.
  • an LED strength indicator 421 that displays the cleaning strength in five levels is installed above the cleaning strength switch 415. Further, a position indicator lamp 422 for displaying the cleaning position in five stages is disposed above the cleaning position switch 416.
  • 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 on the upper surface of the remote control main body 401. 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.
  • 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.
  • the sensor control unit detects a human body with a signal from the 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.
  • the sanitary washing device of the present embodiment is configured.
  • FIG. 6 is a schematic diagram showing the configuration of the water circuit of the washing section 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.
  • cleaning part 500 shown in FIG. 6 is incorporated in the main body 200, and wash
  • 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.
  • a water supply connection port 510 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 disposed on the lower right side of the main body 200 and is connected to, for example, a water pipe.
  • 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.
  • 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 downstream 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.
  • 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
  • FIG. 1 A chassis 501 that is molded of a resin material such as ABS, and is integrally configured. And it is assembled
  • 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.
  • 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.
  • the watertight structure can be improved and the arrangement accuracy of the members can be improved.
  • the arrangement accuracy of the sub tank 600 and the heat exchanger 700 is improved.
  • the control precision of the flow volume of washing water improves.
  • the performance of the cleaning unit 500 is improved and the flow rate control accuracy is improved.
  • FIG. 16 is a perspective view showing the appearance of the water pump.
  • FIG. 17 is a cross-sectional view of the water pump.
  • the water pump 516 is constituted by a piston pump that is a positive displacement pump having an outer shape of approximately L (including L), for example.
  • 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.
  • 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.
  • the outer periphery of the substantially cylindrical (including a cylindrical) motor portion 516a of the water pump 516 having the above-described configuration is surrounded by a cushioning member (not shown) made of, for example, foam resin having elasticity.
  • the motor unit 516a is supported by the water pump installation unit 501a by inserting the motor unit 516a into the substantially cylindrical (including columnar) water pump installation unit 501a provided at the rear of the chassis 501.
  • the link mechanism portion 516b and the piston portion 516c are installed in a suspended state so as to hang downward.
  • the water pump installation part 501a is formed in 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. As shown in FIG. 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.
  • 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. .
  • 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.
  • the link mechanism portion 516b and the piston portion 516c that generate a lot of vibrations are suspended in a free state.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the upper cross-sectional area of the tank body 610 is smaller than the lower cross-sectional area.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 washing water rises in the water tank 615 while changing the flow direction at 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.
  • 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.
  • 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.
  • 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.
  • the sub tank 600 is provided with a partition wall 614 to prevent air from entering. Thereby, damage to the heat exchanger 700 can be effectively prevented.
  • the sub tank 600 includes a common electrode 621 that is formed of, for example, a stainless material and serves as a common electrode, and a plurality of water level electrodes 622 that are installed for each water level.
  • the water level detection sensor 620 is provided.
  • an example in which one common electrode 621 and two water level electrodes 622 are configured is shown, but the present invention is not limited to this.
  • 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 limit electrode 623 provided at the upper portion and a lower limit electrode 624 provided at the lower portion. At this time, the common electrode 621 is disposed at a position lower than the lower limit electrode 624 of the water level electrode 622 and is always immersed in the cleaning water in a normal use state.
  • the water level of the cleaning water is detected by the water level electrode 622 as follows.
  • 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 limit electrode 624 and the upper limit electrode 623 are submerged. At this time, the voltage between the common electrode 621, the lower limit electrode 624, and the upper limit electrode 623 decreases. Thereby, the control part 130 detects the water level of a wash water from the fall of a voltage.
  • the upper limit electrode 623 of the water level electrode 622 is used for detecting the upper limit water level
  • the lower limit electrode 624 is used for detecting the lower limit water level.
  • the upper limit 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.
  • the lower limit electrode 624 is installed above the water outlet 602 that flows to the heat exchanger 700. Thereby, air can be prevented from flowing into the heat exchanger 700.
  • control unit 130 applies the voltage while periodically inverting 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the common electrode 621 may be installed on the front wall, and the water level electrode 622 may be installed on the top surface.
  • the lengths are changed so that the tips of the lower limit electrode 624 and the upper limit electrode 623 are at the lower limit water level and the upper limit water level, respectively.
  • the water level electrode 622 is composed of the upper limit electrode 623 and the lower limit electrode 624 is described, but the present invention is not limited to this.
  • 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.
  • the sub-tank of the present embodiment is configured.
  • FIG. 12 is a graph showing a change in output voltage between the upper limit electrode and the common electrode and a threshold value for determining a flooded state and a non-flooded state of the upper limit electrode.
  • FIG. 13 is a graph showing a change in output voltage between the lower limit electrode and the common electrode and a threshold value for determining the submerged state and the non-submerged state of the lower limit electrode.
  • the detection data detected by the sub-tank water level detection sensor 620 in the present embodiment is not only used for detecting the water level, but also used for flow rate detection by arithmetic processing. Therefore, it is required to detect the water level of the sub tank with high detection accuracy.
  • the water level detection sensor 620 detects the water level by a change in the output voltage between the two electrodes. Then, the water level is determined by comparing the output voltage that changes due to the contact and separation between the water level electrode 622 and the surface of the cleaning water with a threshold value. However, the output voltage of the water level detection sensor 620 varies depending on the conductivity and temperature of the cleaning water.
  • temperature correction is performed using detection data of the incoming water temperature sensor 630 installed in the sub tank 600. Thereby, it has comprised so that it can respond to the wash water of the electric conductivity of a wide range.
  • the output voltage between the upper limit electrode 623 and the common electrode 621 is as follows when the upper limit electrode 623 is not submerged and the incoming temperature of the wash water is 5 ° C. It is about 4.7V, and in the case of 40 ° C, it is about 4.4V.
  • the output voltage between the upper limit electrode 623 and the common electrode 621 changes substantially linearly (including a straight line) with respect to the temperature change.
  • the upper limit electrode 623 when the upper limit electrode 623 is submerged, it is about 2V when the incoming temperature of the washing water is 5 ° C, and about 1.4V when it is 40 ° C.
  • the output voltage between the upper limit electrode 623 and the common electrode 621 changes substantially linearly (including a straight line) with respect to the temperature change.
  • the output voltage varies depending on the incoming temperature of the wash water. Therefore, when the threshold value for determining whether the upper limit electrode 623 is submerged or not submerged is made constant, there is a possibility of erroneous detection when cleaning water having different conductivity is used. That is, it is effective to correct the threshold value corresponding to the incoming temperature of the cleaning water.
  • the threshold value between 0 ° C. and 5 ° C. is set to 3.9 V
  • the threshold value between 35 ° C. and 40 ° C. is set to 3.3 V
  • 0 ° C. is changed step by step every 5 ° C.
  • the output voltage between the lower limit electrode 624 and the common electrode 621 is about 4 when the lower limit electrode 624 is not submerged or when the incoming temperature of the wash water is 5 ° C. In the case of 5V and 40 ° C, it is about 4.0V.
  • the output voltage between the lower limit electrode 624 and the common electrode 621 changes substantially linearly (including a straight line) with respect to the temperature change.
  • the lower limit electrode 624 In the state where the lower limit electrode 624 is submerged, it is about 1.5 V when the incoming temperature of the washing water is 5 ° C., and about 1 V when it is 40 ° C.
  • the output voltage between the lower limit electrode 624 and the common electrode 621 changes substantially linearly (including a straight line) with respect to the temperature change.
  • the output voltage varies depending on the incoming temperature of the wash water. Therefore, when the threshold value for determining whether the lower limit electrode 624 is in a submerged state or a non-submerged state is made constant, there is a possibility of erroneous detection when cleaning water having different conductivity is used. That is, it is effective to correct the threshold value corresponding to the incoming temperature of the cleaning water.
  • the threshold value between 0 ° C. and 5 ° C. is set to 3.5 V
  • the threshold value between 35 ° C. and 40 ° C. is set to 2.9 V
  • 0 ° C. to In the range of 40 ° C. for example, the threshold value is changed step by step every 5 ° C.
  • control part 130 correct
  • the threshold for water level detection is corrected in the sanitary washing device of the present embodiment.
  • FIG. 14 is a perspective view showing the appearance of the heat exchanger.
  • FIG. 15 is a cross-sectional view of the heat exchanger.
  • the buffer tank 750 is integrally formed, and the buffer tank 750 is installed on the top of the heat exchanger 700.
  • the heat exchanger 700 is formed in a substantially rectangular (including rectangular) flat plate shape when viewed from the front (see FIG. 15).
  • 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.
  • 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.
  • a water inlet channel 713 connected to the water inlet 711 shown in FIG. 14 is provided over substantially the entire width (including 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.
  • the slits 714 function so that the cleaning water flows evenly over the entire width of the heating channel 715.
  • 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.
  • 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.
  • the heat exchanger of the present embodiment is configured.
  • FIG. 18 is a perspective view showing a storage state of the nozzle device in the present embodiment.
  • 19 is a cross-sectional view taken along line 19-19 shown in FIG.
  • FIG. 20 is a vertical cross-sectional view showing a storage state of the nozzle device.
  • FIG. 21 is a detailed cross-sectional view of a portion B shown in FIG.
  • FIG. 22 is a cross-sectional view taken along line 22-22 shown in FIG.
  • FIG. 23 is a cross-sectional view illustrating a storage state of the nozzle device.
  • FIG. 24 is a detailed cross-sectional view of a portion C shown in FIG.
  • FIG. 25 is a vertical cross-sectional view showing a state where the nozzle device is cleaned.
  • 26 is a detailed cross-sectional view of a portion D shown in FIG.
  • FIG. 27 is a longitudinal sectional view showing a bidet cleaning state of the nozzle device.
  • FIG. 28 is a detailed cross-sectional view of a portion E shown in FIG.
  • FIG. 29 is a cross-sectional view of the nozzle portion showing the bidet cleaning state of the nozzle device.
  • FIG. 30 is a detailed cross-sectional view of a portion G shown in FIG.
  • the nozzle device 800 includes at least a support portion 810, a nozzle portion 820, a drive portion 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.
  • the arrangement direction of the nozzle unit is the rear direction
  • the advancing direction of the nozzle unit is the front side
  • the right side is the right side
  • the left side is the left side.
  • 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. 19) that guides the flexible rack 861 (see FIG. 19) 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.
  • 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.
  • 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).
  • 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.
  • 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.
  • 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.
  • 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.
  • the butt cleaning unit 831 includes an butt cleaning jet 834 that opens upward at the tip of the nozzle body 830, and a butt cleaning jet 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.
  • a rectifying plate 835a that rectifies the flow of the cleaning water is installed at the bent portion.
  • the bidet cleaning unit 832 includes a bidet cleaning jet 836 disposed behind the bottom 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.
  • 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.
  • the nozzle unit 820 includes a storage position in which the nozzle unit 820 illustrated in FIG. 18 is stored behind the holding unit 816, and a buttocks cleaning position in which the nozzle unit 820 illustrated in FIG. 25 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.
  • a nozzle cover stopper 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.
  • 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.
  • one jet opening 844 is provided so that the bottom cleaning jet 834 and the bidet cleaning jet 836 of the nozzle main body 830 can face each other.
  • 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.
  • 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.
  • a flow control valve 517 is installed on the rear end surface of the nozzle body 830.
  • the flow control valve 517 includes a disc-type valve main body 517a and a stepping motor 517b that drives a switching operation.
  • the flow control valve 517 has a function of selectively supplying cleaning water to the buttocks cleaning channel 835, the bidet cleaning channel 837, and the nozzle cleaning channel 839.
  • 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.
  • connection portion 850 including the connecting member 842 of the nozzle cover 840 and the connection receiving portion 851 of the nozzle body 830 according to the present embodiment will be described with reference to FIGS. 24 and 30.
  • 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 with two substantially V-shaped (including V-shaped) front front recessed portions 851a and rear rear recessed portions 851b, which are arranged at intervals in the front-rear direction. Yes.
  • 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.
  • 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.
  • 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.
  • the nozzle main body 830 and the nozzle cover 840 are connected in a state where the connecting protrusion 843a is engaged with the front recessed portion 851a or the rear recessed portion 851b.
  • the nozzle cover 840 can be pulled and moved by the nozzle body 830.
  • the nozzle device of the present embodiment is configured.
  • FIG. 32 is a time chart of the cleaning section during normal use of the sanitary cleaning apparatus.
  • tap water flowing through a water pipe is supplied from a water supply connection port 510 as cleaning water.
  • the control unit 130 opens the water stop electromagnetic valve 514 and supplies the cleaning water to the sub tank 600.
  • 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.
  • the wash water supplied to the sub tank 600 is stored in the sub tank 600 and also supplied to the heat exchanger 700 and the water pump 516.
  • the control unit 130 drives the water pump 516 to supply cleaning water to the nozzle device 800 via the flow control valve 517.
  • 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.
  • control unit 130 drives the water pump 516 and energizes the flat heater 702 of the heat exchanger 700 to start heating the cleaning water.
  • control unit 130 controls energization to the flat heater 702 based on detection information from the incoming water temperature sensor 630 and the outgoing hot water temperature sensor 730.
  • control unit 130 controls the flat heater 702 so that the cleaning water is maintained at the temperature set by the hot water temperature switch 231 of the operation unit 210.
  • control unit 130 controls the flow control valve 517 based on the operation information of the operation unit 210 and the remote controller 400. Then, the flow control valve 517 switches to any of the butt cleaning unit 831, the bidet cleaning unit 832, and the nozzle cleaning unit 833 of the nozzle device 800 and supplies cleaning water. Accordingly, the cleaning water is ejected from any one of the buttocks cleaning ejection port 834, the bidet cleaning ejection port 836, and the nozzle cleaning ejection port 838.
  • FIG. 31 is a time chart of the cleaning section at the initial use of the sanitary cleaning apparatus.
  • FIG. 31 shows the initial use when cleaning water is not stored in the cleaning section, such as when the sanitary cleaning device is used for the first time after installation, or when it is reused after draining operation to prevent freezing. It is a time chart of each function of the washing
  • the preheating operation is an operation for preparing a state in which the cleaning unit can be used reliably by predicting that the seated user performs the cleaning operation after the stool. That is, when the user sits on the toilet seat 300, the heat exchanger 700, the nozzle portion 820, and the like are preheated in advance. Thereby, it is operation
  • the control unit 130 starts energization of the water stop solenoid valve 514 and starts supplying cleaning water.
  • driving of the water level detection sensor 620 is started.
  • the cleaning water is supplied to the sub tank 600.
  • the driving of the water level detection sensor 620 is continued until a time point P18 when a series of butt cleaning operations are completed.
  • the control unit 130 starts measuring time. Then, at a time P3 when a predetermined time has elapsed, the energization of the water stop solenoid valve 514 is stopped to stop the supply of cleaning water.
  • energization is stopped 2 seconds after the upper limit water level is detected. This is because, at the time point P2 when the upper limit water level is detected, the sub tank 600, the heat exchanger 700, and the water pump 516 are basically full. Here, the feeding is continued for another 2 seconds, and the heat exchanger 700 and the water pump 516 are more reliably filled with the washing water. Thereby, the exclusion of air in the heat exchanger 700 and the washing water can be surely filled. As a result, it is possible to reliably prevent the heat exchanger 700 from being blown and improve safety and durability. Further, the cleaning water can be supplied to the water pump 516 so as to be surely filled with water. Thereby, the water supply function of the water pump 516 can be started reliably.
  • the control unit 130 starts driving the water pump 516 at the time P3 when the energization of the water stop solenoid valve 514 is stopped.
  • the flow control valve 517 is actuated to start supplying cleaning water to the nozzle cleaning flow path 839 of the nozzle unit 820.
  • the control unit 130 starts driving the heat exchanger 700. That is, it can be confirmed that the water pump 516 is operating normally by detecting the drop in the water level. Thereby, an abnormal temperature rise of the heat exchanger 700 can be prevented.
  • the control unit 130 stops energization of the water pump 516 and the heat exchanger 700. As a result, the preheating operation is terminated.
  • the water level of the sub tank 600 decreases during the time point P3 to the time point P6 when the preheating operation is performed.
  • the control unit 130 starts energization of the water stop electromagnetic valve 514 and resumes water supply to the sub tank 600.
  • the energization to the water stop solenoid valve 514 is stopped. Thereby, it will be in a standby state at the time P7 when the sub tank 600 became a full water state. The operation of the cleaning unit is stopped until the user performs the cleaning operation.
  • the control unit 130 starts driving the water pump 516 and the heat exchanger 700.
  • the control unit 130 operates the flow control valve 517 to start supplying cleaning water to the bottom cleaning channel 835 of the nozzle unit 820.
  • the cleaning water supplied to the buttocks cleaning channel 835 is ejected from the buttocks cleaning jet outlet 834.
  • the jetted washing water passes through the jet opening 844 and is reflected on the inner surface of the holding portion 816 provided at the tip of the support portion 810. Thereby, the outer surface of the nozzle cover 840 is cleaned.
  • This cleaning operation is hereinafter referred to as “pre-cleaning”. Note that the pre-cleaning is continued until, for example, a time point P9 after 2 seconds after the hot water temperature of the heat exchanger 700 reaches 25 ° C.
  • the control unit 130 drives the drive unit 860 of the nozzle device 800 to move the nozzle unit 820 from the storage position to the buttocks cleaning position.
  • the control unit 130 switches the flow control valve 517 and supplies cleaning water to the nozzle cleaning flow path 839.
  • the cleaning water supplied to the nozzle cleaning channel 839 is jetted into the nozzle cover 840 from the nozzle cleaning jet port 838.
  • the jetted cleaning water flows out of the nozzle cover 840 from the drain port 845 after cleaning the inner surface of the nozzle cover 840.
  • the nozzle part 820 is warmed by the washing water. Thereby, it can suppress that cold water spouts immediately after the start of hips washing implemented after that, and a user feels discomfort.
  • the control unit 130 switches the flow control valve 517 from the nozzle cleaning channel 839 to the buttocks cleaning channel 835. Then, supply of cleaning water to the buttocks cleaning channel 835 is started.
  • the washing water supplied to the buttocks washing flow path 835 is ejected from the buttocks washing ejection port 834 and passes through the ejection opening 844 to wash the user's local area.
  • the buttocks cleaning operation is continued until a time point P15 at which the cleaning stop operation is performed.
  • the controller 130 controls the wash water to a predetermined temperature based on the detection data of the incoming water temperature sensor 630 and the outgoing hot water temperature sensor 730 while the heat exchanger 700 is being driven.
  • the control unit 130 starts energizing the water stop solenoid valve 514. Thereafter, energization is continued until time point P12 when the water level detection sensor 620 detects the upper limit water level.
  • control unit 130 stops energization of the water stop solenoid valve 514 and starts measuring time. Then, the elapsed time until the time point P13 when the water level detection sensor 620 detects the lower limit water level is measured.
  • the control unit 130 calculates the flow rate by calculating the measured elapsed time and the amount of water (65 cc) from the upper limit water level to the lower limit water level. If there is a difference between the flow rate set for each cleaning strength and the jetted flow rate at the time P14 when the calculation by the flow rate calculation process is completed, the control unit 130 adjusts the output of the water pump 516 to perform cleaning. Correct the water flow rate.
  • the control unit 130 stops energization of the water pump 516 and the heat exchanger 700. At the same time, the control unit 130 drives the drive unit 860 of the nozzle device 800 to retract the nozzle unit 820 from the buttocks cleaning position to the storage position.
  • the control unit 130 stops driving the driving unit 860 of the nozzle device 800 at the time P16 when the nozzle unit 820 moves back to the storage position. At the same time, the control unit 130 drives the water pump 516 and the heat exchanger 700 again to start “post-cleaning” for cleaning the nozzle unit 820. And control part 130 stops a drive of water pump 516 and heat exchanger 700 at time P17 when predetermined time passed. This completes the “post-cleaning”.
  • the control unit 130 supplies power to the sub-tank 600 again by energizing the water stop electromagnetic valve 514. Then, at time P18 when the upper limit water level is detected, the control unit 130 stops energization of the water stop solenoid valve 514, and ends a series of control of the buttocks cleaning. As a result, the sub tank 600 is in a full state and the cleaning unit is in a standby state.
  • the control of the cleaning unit during the initial use of the sanitary cleaning device of the present embodiment is executed.
  • FIG. 32 is a time chart of the cleaning section during normal use of the sanitary cleaning apparatus. Note that FIG. 32 is based on a sanitary washing apparatus in which initial use has already been performed and the sub tank 600 is full. And the time chart at the time of normal use when the user sits on the toilet seat 300 and performs the cleaning operation in the above state is shown.
  • control of the cleaning unit during normal use shown in FIG. 32 memorizes that the sub tank 600 is already full at the time P20 when the user is seated on the toilet seat 300, and that the control unit 130 has performed the initial use. This is different from the control of the cleaning unit for initial use shown in FIG.
  • the sub tank 600 is already in a standby state with the water full.
  • control unit 130 starts driving the water pump 516 of the preheating operation at the time point P20 based on the stored data that has already been subjected to the control of the initial use. That is, the preheating operation after the time P3 shown in FIG. Since the subsequent control is the same as in the initial use shown in FIG. 31, the description thereof is omitted.
  • the sanitary washing device of the present embodiment detects a change in the level of the wash water by the water level detection sensor 620 provided in the sub tank 600, and calculates the flow rate by calculation. Thereby, it is not necessary to separately provide a dedicated flow sensor for detecting the flow rate in the cleaning unit. As a result, the structure of the cleaning unit can be simplified and the cost can be reduced.
  • the sanitary washing device of the present embodiment corrects the threshold value for determining the change in the output voltage between the electrodes in the water level detection based on the temperature.
  • the accuracy of water level detection and flow rate detection can be improved, and water having different conductivity over a wide range can be used as cleaning water for the sanitary cleaning device.
  • the usage range and usability of the sanitary washing device can be further improved.
  • the sanitary washing device of the present embodiment continues to pass water for a predetermined time after detecting the sub tank full condition when the sanitary washing device is initially used.
  • the air in a heat exchanger can be excluded and a wash water can be reliably made into a full water state.
  • the cleaning water can be supplied to the water pump to ensure that the water is full. Thereby, the water supply function of a water pump can be started reliably.
  • the sanitary washing device of the present embodiment drives the water pump, and then starts energizing the heat exchanger after the water level detection sensor detects the cancellation of the upper limit water level. Thereby, it can confirm that the water pump is working normally. As a result, it is possible to prevent the heat exchanger from being blown. Therefore, compared with the structure which prevents the air blowing using the flow sensor generally implemented, it can be made a simple structure. Thereby, it is possible to realize a sanitary washing apparatus that secures high safety and reliability at low cost.
  • 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, a control unit, and an operation unit that operates the control unit. And including.
  • 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 a part of the flow path to the atmosphere.
  • the sub tank includes a water level detection sensor that detects an upper limit water level and a lower limit water level of cleaning water stored in the sub tank.
  • control unit continues to supply water to the sub tank for a predetermined time from the time when the water level detection sensor first detects the upper limit water level, and thereafter to the sub tank when the water level detection sensor detects the upper limit water level. You may have the structure which stops water supply.
  • the control unit of the sanitary washing device of the present invention is configured to start driving the heat exchanger when the water level detection sensor cancels the detection of the upper limit water level when a cleaning operation is performed in the operation unit. It is good.
  • the present invention can prevent the heat exchanger from being blown, it can be applied to water application equipment including other heat exchangers in addition to the sanitary washing device.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Molecular Biology (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Cleaning By Liquid Or Steam (AREA)
PCT/JP2014/005166 2013-11-14 2014-10-10 衛生洗浄装置 WO2015072075A1 (ja)

Priority Applications (2)

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CN201480061673.6A CN105723035B (zh) 2013-11-14 2014-10-10 卫生清洗装置
JP2015547613A JP6322816B2 (ja) 2013-11-14 2014-10-10 衛生洗浄装置

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JP2013-235665 2013-11-14
JP2013235665 2013-11-14

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WO2018031960A1 (en) * 2016-08-11 2018-02-15 Whole Bath, Llc A method and a wash system with a built-in cleanser assembly
JP2019027014A (ja) * 2017-07-25 2019-02-21 Toto株式会社 衛生洗浄装置
JP2021152302A (ja) * 2020-03-24 2021-09-30 株式会社アイシン 洗浄便座装置
EP3760798B1 (en) * 2019-07-05 2024-09-11 Toto Ltd. Sanitary washing device

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CN109972704B (zh) * 2019-03-30 2024-07-19 海益（厦门）建材工业有限公司 一种智能马桶用加热水箱
CN110593372A (zh) * 2019-09-27 2019-12-20 厦门科牧智能技术有限公司 一种卫生清洗装置的自检方法及工作方法
CN114222845A (zh) * 2020-05-28 2022-03-22 松下知识产权经营株式会社 卫生清洗装置

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JP2009002033A (ja) * 2007-06-21 2009-01-08 Panasonic Corp トイレ利用装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018031960A1 (en) * 2016-08-11 2018-02-15 Whole Bath, Llc A method and a wash system with a built-in cleanser assembly
JP2019027014A (ja) * 2017-07-25 2019-02-21 Toto株式会社 衛生洗浄装置
EP3760798B1 (en) * 2019-07-05 2024-09-11 Toto Ltd. Sanitary washing device
JP2021152302A (ja) * 2020-03-24 2021-09-30 株式会社アイシン 洗浄便座装置

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JP6322816B2 (ja) 2018-05-16
CN105723035A (zh) 2016-06-29
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CN105723035B (zh) 2017-05-24

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