EP2871295A1 - Sanitäre reinigungsvorrichtung - Google Patents

Sanitäre reinigungsvorrichtung Download PDF

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Publication number
EP2871295A1
EP2871295A1 EP20130813147 EP13813147A EP2871295A1 EP 2871295 A1 EP2871295 A1 EP 2871295A1 EP 20130813147 EP20130813147 EP 20130813147 EP 13813147 A EP13813147 A EP 13813147A EP 2871295 A1 EP2871295 A1 EP 2871295A1
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EP
European Patent Office
Prior art keywords
cleansing
water
water level
nozzle
tank
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Granted
Application number
EP20130813147
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English (en)
French (fr)
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EP2871295A4 (de
EP2871295B1 (de
Inventor
Kazuhiro Handa
Ryoichi Koga
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Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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Publication of EP2871295A1 publication Critical patent/EP2871295A1/de
Publication of EP2871295A4 publication Critical patent/EP2871295A4/de
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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 flow rate control of cleansing water in a sanitary cleansing device.
  • a sanitary cleansing device described in PTL 1 includes a flow sensor at an upstream side of a heat exchanger for heating cleansing water.
  • the flow sensor is configured by a swirl chamber in which cleansing water flows in a substantially U-shape, a rotor having a swirler, a photo interrupter, and the like. Then, the photo interrupter detects light interruption by the swirler rotated by the cleansing water that flows in the swirl chamber of the flow sensor, and detects a flow rate. Consequently, it is possible to detect the flow rate of the cleansing water with high detection precision, and to heat the cleansing water to a proper temperature with a heater of the heat exchanger.
  • a sanitary cleansing device of the present invention includes: a cleansing nozzle configured to discharge cleansing water; and a cleansing water flow passage configured to allow the cleansing water from a supply source to flow toward the cleansing nozzle.
  • the cleansing water flow passage has: a displacement pump configured to control a flow rate of the cleansing water discharged from the cleansing nozzle; an atmosphere open part disposed at an upstream side of the displacement pump, configured to open a part of the cleansing water flow passage to atmosphere, and having a tank for storing the cleansing water, and a water level sensor for detecting a water level in the tank to output a signal; a solenoid valve configured to pass and block the cleansing water supplied from the supply source to the atmosphere open part; and a controller configured to control the displacement pump and the solenoid valve. Furthermore, the controller calculates flow rate of the cleansing water supplied per unit time from the supply source based on the signal of the water level sensor, and corrects control of the displacement pump.
  • the displacement pump is disposed downstream of the atmosphere open part, so that a number of rotations of the displacement pump is controlled with no influence of supply pressure of the water supply source, and the flow rate of the cleansing water discharged from the cleansing nozzle is controlled.
  • the water level sensor measures a flow rate of cleansing water that has actually passed, and feeds back the measured flow rate to the controller, so that the control of the displacement pump is corrected. Consequently, the flow rate detected by the water level sensor is corrected, and the flow rate of the cleansing water jetted from the displacement pump can be controlled with no influence of variations in components, aged deterioration, or the like.
  • FIG. 1 a sanitary cleansing device according to a first exemplary embodiment of the present invention, and a toilet device with the same will be described with reference to FIG. 1 .
  • FIG. 1 is a perspective view of the toilet device mounted with the sanitary cleansing device according to the first exemplary embodiment of the present invention.
  • Toilet device 1000 is installed in a toilet room.
  • toilet device 1000 of this exemplary embodiment includes at least sanitary cleansing device 100, toilet bowl 700, room entry detection sensor 600, and the like, and is mounted with sanitary cleansing device 100 on toilet bowl 700.
  • Sanitary cleansing device 100 is configured by main body 200, remote controller 300, toilet seat 400, lid 500, and the like.
  • Main body part 200 incorporates a cleansing water supply mechanism (see FIG. 3 ) that is controlled by sitting sensor 610 and controller 4 provided on a front upper part, and is openably mounted with toilet seat 400 and lid 500.
  • Sitting sensor 610 is configured by, for example, a reflective infrared sensor, and detects an infrared ray reflected from a human body, to detect whether or not a user is present on toilet seat 400.
  • the cleansing water supply mechanism incorporated in main body 200 has one end connected to toilet bowl nozzle 40 provided on a front lower part of main body 200 and the other end connected to a tap water piping.
  • FIG. 1 shows a state where toilet bowl nozzle 40 protrudes inside toilet bowl 700. Consequently, the cleansing water supply mechanism supplies cleansing water supplied from the tap water piping to toilet bowl nozzle 40.
  • the supplied cleansing water is jetted from toilet bowl nozzle 40 into a wide range of an inner surface of toilet bowl 700.
  • the cleansing water is jetted from toilet bowl nozzle 40 to a rear surface side of the inner surface of toilet bowl 700.
  • a cleansing water supply mechanism incorporated in main body 200 is connected to nozzle part 20 configured by buttock nozzle 1 that serves as a private part cleansing nozzle, bidet nozzle 2 that serves as a bidet cleansing nozzle, nozzle cleansing nozzle 3, toilet bowl nozzle 40, and the like, which configure a cleansing nozzle (see FIG. 3 ). Consequently, the cleansing water supply mechanism supplies cleansing water supplied from a tap water piping, to nozzle part 20. Then, the supplied cleansing water is jetted from buttock nozzle 1, bidet nozzle 2, or the like to a private part of a user. Additionally, cleansing water supplied to nozzle cleansing nozzle 3 of nozzle part 20 is jet to nozzle part 20 such as buttock nozzle 1 and bidet nozzle 2, thereby cleansing the nozzles.
  • Operation part such as remote controller 300 has a plurality of switches for selecting cleansing modes of cleansing a plurality of cleansing nozzles, and is mounted on, for example, a place where the user sitting on toilet seat 400 can operate.
  • Room entry detection sensor 600 is configured by, for example, a reflective infrared sensor, and is mounted on an entrance of the toilet room or the like. In a case where room entry detection sensor 600 detects an infrared ray reflected from the human body, room entry detection sensor 600 detects that the user entered the toilet room.
  • Controller 4 (see FIG. 3 ) of main body 200 controls operation of respective parts of sanitary cleansing device 100 based on signals transmitted from remote controller 300, room entry detection sensor 600, and sitting sensor 610.
  • remote controller 300 of sanitary cleansing device 100 will be described with reference to FIG. 2 .
  • FIG. 2 is a front view of the remote controller of the sanitary cleansing device according to this exemplary embodiment.
  • remote controller 300 includes wide cleansing switch 305, rhythm cleansing switch 306, water force setting switches 307 and 308, move cleansing switch 309, and cleansing position setting switches 310 and 311 which are provided on an upper part of controller main body 301, and stop switch 302 for instructing cleansing operation, buttock switch 303, and bidet switch 304 which are provided on a lower part of controller main body 301.
  • Controller 4 controls operation of respective components of main body 200 and toilet seat 400 based on the received signals. For example, in a case where the user depresses buttock cleansing button 303 or bidet cleansing button 304, controller 4 moves nozzle part 20 of main body 200, such as buttock nozzle 1 and bidet nozzle 2, jets cleansing water, and cleanses the private part of the user.
  • controller 4 controls quantity of cleansing water to be jetted from nozzle part 20, to cleanse the private part.
  • FIG. 3 is a schematic diagram showing a configuration of the main body of the sanitary cleansing device according to this exemplary embodiment.
  • main body 200 of sanitary cleansing device 100 is configured by controller 4 having water level controller 4s, branch faucet 5, strainer 6, solenoid valve 7, atmosphere open part 8, flow regulating valve 9, heat exchanger 12, temperature sensors 13a and 13b, displacement pump 14, buffer tank 15, switching valve 16, nozzle part 20, toilet bowl nozzle motor 40m, and the like.
  • nozzle part 20 of main body 200 is configured by buttock nozzle 1, bidet nozzle 2, and nozzle cleansing nozzle 3, toilet bowl nozzle 40, and the like, and switching valve 16 includes switching valve motor 16m.
  • branch faucet 5 is inserted into tap water piping 201 that serves as a supply source of cleansing water, and is connected to cleansing water flow passage 202 that reaches buttock nozzle 1 and bidet nozzle 2 which configure the cleansing nozzle.
  • flow regulating valve 9, strainer 6, solenoid valve 7, atmosphere open part 8 having tank 8a including vacuum braker 31 and relief valve 51, temperature sensor 13a, heat exchanger 12, temperature sensor 13b, buffer tank 15, displacement pump 14, and switching valve 16 are sequentially inserted from branch faucet 5.
  • toilet bowl nozzle 40 that configures nozzle part 20 is connected to an end of toilet bowl cleansing water flow passage 205 branched from cleansing water flow passage 202 by switching valve 16.
  • Toilet bowl nozzle 40 is mounted with toilet bowl nozzle motor 40m.
  • tap water that flows through tap water piping 201 is supplied to strainer 6 as cleansing water by branch faucet 5. Then, strainer 6 removes dust, impurities, and the like included in the cleansing water.
  • Controller 4 controls solenoid valve 7 to switch a supply state of the cleansing water. At this time, pressure of cleansing water that passes through flow regulating valve 9 formed from a rubber variable orifice having an orifice diameter changed by action water pressure, and flows in cleansing water flow passage 202 is reduced.
  • the cleansing water controlled by solenoid valve 7 is supplied to heat exchanger 12 having a heater provided downstream of atmosphere open part 8, and upstream of displacement pump 14, via atmosphere open part 8 which is hereinafter described in detail.
  • Heater 12h of heat exchanger 12 heats the cleansing water supplied through cleansing water flow passage 202 to a predetermined temperature (temperature set by a cleansing temperature setting part (not shown) of the operation part such as the remote controller), for example, 39°C.
  • displacement pump 14 (hereinafter, referred to as a "displacement pump") that serves as a pulsation pump connected to heat exchanger 12 is driven and controlled by water level controller 4s of controller 4, and cleansing water having a flow rate according to operation speed of displacement pump 14 is discharged from buttock nozzle 1 or bidet nozzle 2 that serves as the cleansing nozzle. Therefore, controller 4 controls heating operation by heater 12h of heat exchanger 12 based on measured temperature values measured by temperature sensors 13a and 13b and a flow rate of cleansing water controlled by displacement pump 14.
  • switching valve 16 The cleansing water heated by heater 12h of heat exchanger 12 is pumped to switching valve 16 through buffer tank 15 by displacement pump 14. Then, switching valve 16 is switched to buttock nozzle 1 or bidet nozzle 2 that serves as the human body cleansing nozzle, or nozzle cleansing nozzle 3 for cleansing a nozzle, by controller 4. Additionally, switching valve 16 is switched to toilet bowl nozzle 40 that discharges the cleansing water to a toilet bowl surface in order to perform the pre-cleansing of the toilet bowl, back part cleansing of the toilet bowl, and the like.
  • buffer tank 15 acts as a temperature buffer part of the heated cleansing water. That is, the cleansing water pumped to switching valve 16 controls generation of temperature irregularity.
  • Total capacity of heat exchanger 12 and buffer tank 15 is preferably from 15 cc to 30 cc, and more preferably from 20 cc to 25 cc. Consequently, in a general sanitary cleansing device, temperature fluctuation of cleansing water can be suppressed with optimum responsiveness.
  • controller 4 controls operation of switching valve motor 16m, switching valve 16 is switched to any of buttock nozzle 1, bidet nozzle 2, nozzle cleansing nozzle 3, and toilet bowl nozzle 40, which configure nozzle part 20 of the cleansing nozzle, and the cleansing water pumped from displacement pump 14 is supplied. Consequently, the cleansing water is jetted from any of buttock nozzle 1, bidet nozzle 2, nozzle cleansing nozzle 3, and toilet bowl nozzle 40.
  • Buttock nozzle 1, and bidet nozzle 2 are used to cleanse the private part of the user.
  • Nozzle cleansing nozzle 3 is used to cleanse parts of buttock nozzle 1 and bidet nozzle 2 that protrude inside toilet bowl 700.
  • toilet bowl nozzle 40 is used to cleanse the inside of the toilet bowl.
  • FIG. 4 is a schematic diagram showing an example of the atmosphere open part of the sanitary cleansing device according to this exemplary embodiment.
  • atmosphere open part 8 is configured by at least tank 8a having water inlet 8b, water outlet 8d, and atmosphere open hole 8c, water level sensor 11, vacuum braker 31, relief valve 51, and the like.
  • Water inlet 8b of tank 8a is provided at an upstream side of tank 8a, and cleansing water such as tap water is injected in tank 8a via solenoid valve 7 of main body 200.
  • Water outlet 8d of tank 8a flows cleansing water to heat exchanger 12 that is provided at a downstream side of tank 8a.
  • Water level sensor 11 detects a water level of cleansing water stored in tank 8a, to output, for example, a conduction signal.
  • Atmosphere open hole 8c of tank 8a is provided on an upper part of vacuum braker 31 provided in tank 8a, and an upper part of inside of tank 8a is opened to atmosphere, so that air layer 8e is formed.
  • a pipe that guides cleansing water overflown from tank 8a due to failure into toilet bowl 700 is connected to atmosphere open hole 8c of tank 8a.
  • tank 8a that configures atmosphere open part 8 temporarily stores cleansing water such as tap water supplied from a supply source, in which a temperature is fluctuated depending on a surrounding environment, and suppresses the temperature to almost an indoor environment temperature. That is, tank 8a acts as an inflow water temperature buffer part of cleansing water. Therefore, temperature dispersion of cleansing water that enters from the supply source is buffered to some extent, and cleansing water whose temperature is not rapidly changed can be supplied from tank 8a to heat exchanger 12. Consequently, a burden of electric power or the like can be reduced, when heater 12h of heat exchanger 12 heats cleansing water. Additionally, it is possible to further reduce discharge temperature irregularity of cleansing water along with temperature buffer action of buffer tank 15.
  • Vacuum braker 31 is provided on an upper part of tank 8a, and prevents external leakage of the cleansing water in tank 8a in a case where tank 8a falls.
  • Relief valve 51 is provided on the upper part of tank 8a, and opens (reduces) internal pressure in a case where internal pressure of tank 8a reaches predetermined pressure or more.
  • Water level sensor 11 is configured by, for example, three electrodes of first sensor 11b, second sensor 11a, and third sensor 11c, lengths of which are different. Tip positions of first sensor 11b, second sensor 11a, and third sensor 11c are set so as to detect an upper limit water level or a lower limit water level by contact with cleansing water inside tank 8a.
  • the lower limit water level is detected by a state where the longest second sensor 11a of water level sensor 11 is soaked in the cleansing water, and middle first sensor 11b is not soaked in the cleansing water, namely, by non-conduction between second sensor 11a and first sensor 11b.
  • the tip position of first sensor 11b is disposed at at least the same position as, or a higher position than an upper end position 12g of heater 12h of heat exchanger 12 shown in FIG. 4 .
  • the upper limit water level is detected in a case where tip positions of all of three first, second, third sensors 11b, 11a, and 11c are soaked in the cleansing water.
  • water level sensor 11 shown in FIG. 4 is configured such that first sensor 11b, second sensor 11a, and third sensor 11c whose lengths are different are placed so as to protrude from the upper part of tank 8a in tank 8a, but is not limited to this.
  • water level sensor 11 may be configured such that three sensors (not shown) whose lengths are the same are disposed at positions corresponding to the tip positions of first sensor 11b, second sensor 11a, and third sensor 11c whose lengths are different, shown in FIG. 4 , for example, high, middle and low height positions from side surface 8f of tank 8a. Consequently, the water level sensor can be configured by a single kind of sensors whose lengths are the same and short without using three kinds of sensors whose lengths are different. As a result, components that configure the sensors can be standardized from the three kinds to the single kind, and the sensors are configured by short sensors, thereby enabling reduction in a maintenance cost and a material cost.
  • Relief valve 51 may be disposed at an upstream side of atmosphere open part 8, and may be integrated with solenoid valve 7. Consequently, atmosphere open part 8, a main body of the sanitary cleansing device, or the like can be made compact.
  • FIG. 5 is a sectional view of the displacement pump of the sanitary cleansing device according to this exemplary embodiment.
  • displacement pump 14 is configured by at least pump main body 81 having columnar space 82, pressure feeding piston 83, motor 86, link mechanism 89, and the like. At this time, pressure feeding piston 83 divides columnar space 82 of pump main body 81 into pump chamber 82a and pump chamber 82b.
  • Pump main body 81 has one side part provided with inflow parts 84 of cleansing water, and the other side part provided with outflow parts 85 of cleansing water.
  • Inflow parts 84 are connected to heat exchanger 12 via cleansing water flow passage 202, and outflow parts 85 are connected to switching valve 16 via cleansing water flow passage 202.
  • displacement pump 14 performs following operation.
  • pressure feeding piston 83 by the upward and downward motion of pressure feeding piston 83, pressure is alternately applied to the cleansing water in pump chamber 82a and the cleansing water in pump chamber 82b. Additionally, reciprocating speed of pressure feeding piston 83 is changed during a single rotation, so that periodical pulsation can be applied to the cleansing water of inflow parts 84. At this time, as to pulsation pressure of the cleansing water, minimum pressure during pulsation is nearly equal to inflow pressure of displacement pump 14. On the other hand, maximum pressure of the pulsation pressure becomes pressure corresponding to a load of displacement pump 14 and speed of capacity change of displacement pump 14. Consequently, the cleansing water to which the pulsation pressure is applied is discharged from outflow parts 85 of displacement pump 14.
  • opening to the atmosphere is allowed on an upstream side with respect to displacement pump 14 by atmosphere open part 8 inserted in cleansing water flow passage 202. That is, the inflow pressure of the cleansing water that flows into displacement pump 14 becomes atmospheric pressure (corresponding to 0 MPa at gauge pressure of an atmospheric pressure reference) without being affected by supply pressure of tap water being a supply source.
  • cleansing water having a flow rate and pulsation pressure according to rotational speed of motor 86 of displacement pump 14 controlled by controller 4 are supplied to toilet bowl nozzle 40. Consequently, a jet flow of the cleansing water can be stably discharged into the toilet bowl from toilet bowl nozzle 40 at arbitrary pressure or an arbitrary flow rate without being affected by the supply pressure of the tap water being the supply source. As a result, the jet flow of the cleansing water discharged from toilet bowl nozzle 40 can be prevented from splashing outside the toilet bowl.
  • An installation position in a height direction of displacement pump 14 is preferably installed at a position lower than a water level of atmosphere open part 8. Consequently, pump head capacity of displacement pump 14 is reduced, and an energy loss can be reduced.
  • sanitary cleansing device 100 of this exemplary embodiment includes displacement pump 14 provided on an upstream side with respect to toilet bowl nozzle 40, atmosphere open part 8 that allows a part of cleansing water flow passage 202 disposed on the upstream side with respect to displacement pump 14 to be open to the atmosphere, and controller 4 that controls each part. Therefore, the flow rate of the cleansing water jetted from toilet bowl nozzle 40 and the maximum pressure of pulsation are not affected by supply pressure of tap water supplied from the tap water piping serving as the supply source. That is, the flow rate of the cleansing water jetted from toilet bowl nozzle 40 and the maximum pressure of pulsation can be arbitrarily adjusted in accordance with operation speed of displacement pump 14 by controller 4.
  • the jet flow of the cleansing water discharged from toilet bowl nozzle 40 can be prevented from splashing outside the toilet bowl. Additionally, the toilet bowl surface is previously wetted by the jet flow of the cleansing water from toilet bowl nozzle 40, so that it is possible to prevent adhesion of feces. Furthermore, dirt already adhered to the toilet bowl surface can be effectively removed by the jet flow of the cleansing water from toilet bowl nozzle 40.
  • the pressure of inflow parts 84 of displacement pump 14 becomes nearly atmospheric pressure. Therefore, the minimum pressure of the pulsation of displacement pump 14 becomes the atmospheric pressure.
  • the maximum pressure of pulsation of the displacement pump 14 is changeable by a number of rotations of motor 86 of displacement pump 14, and the pulsation width can be increased.
  • the toilet bowl is cleansed by the jet of the cleansing water from toilet bowl nozzle 40.
  • the present invention is not limited thereto.
  • the present invention may be applied to nozzle cleansing in a case where the private part of the human body is cleansed by buttock nozzle 1 or bidet nozzle 2 that serves as the cleansing nozzle, and operation and effects similar to those described below can be obtained.
  • cleansing water on a primary side of displacement pump 14 is open to the atmosphere; therefore minimum pressure of pulsation pressure of cleansing water discharged from displacement pump 14 is atmospheric pressure, and maximum pressure is changeable by a number of rotations of motor 86 of displacement pump 14. Therefore, the flow rate is reduced by low speed rotation of motor 86 of displacement pump 14, so that it is possible to perform private part cleansing at small pressure amplitude of pulsation pressure with softer cleansing feeling.
  • the flow rate of the cleansing water supplied to nozzle part 20 is increased by high speed rotation of motor 86 of displacement pump 14, so that pressure amplitude of pulsation pressure is increased, and it is possible to perform strong private part cleansing with stimulation feeling. That is, the pulsation width can be increased as the flow rate is increased. As a result, it is possible to provide a wider range of cleansing feeling to the user without being affected by the supply pressure of the tap water being the supply source.
  • controller 4 controls the number of rotations of motor 86 to a flow rate according to water force set by water force setting switches 307 and 308 of the operation part of remote controller 300.
  • sanitary cleansing device 100 of this exemplary embodiment performs variable control of the number of rotations of motor 86 of displacement pump 14 without providing any flow sensor or flow control valve, so that the flow rate of cleansing water can be controlled, and pulsation is applied to the cleansing water.
  • sanitary cleansing device 100 of this exemplary embodiment includes water level sensor 11 that detects a water level of tank 8a, air layer 8e that opens the upper part of the inside of tank 8a to atmosphere, vacuum braker 31 that prevents external leakage of cleansing water in tank 8a, relief valve 51 that release the internal pressure of tank 8a, and the like, on an upper part of atmosphere open part 8 having tank 8a that stores cleansing water.
  • water level sensor 11 that detects a water level of tank 8a
  • air layer 8e that opens the upper part of the inside of tank 8a to atmosphere
  • vacuum braker 31 that prevents external leakage of cleansing water in tank 8a
  • relief valve 51 that release the internal pressure of tank 8a, and the like
  • vacuum valve body 31a made of, for example, rubber, of vacuum braker 31 is generally in contact with lower valve seat 31b by gravity, so that the inside of tank 8a is brought into a seal state
  • lower valve seat 31b of vacuum braker 31 includes communication slit 31c that serves as air vent. Therefore, communication slit 31c opens an upper part of the inside of tank 8a to the atmosphere to form air layer 8e.
  • Vacuum braker 31 of this exemplary embodiment is provided in tank 8a. Therefore, in a case where a side close to the tap water piping that is the supply source becomes negative pressure, air is sucked from vacuum braker 31 provided in the upper part of tank 8a. As a result, cleansing water at the downstream side with respect to tank 8a can be prevented from flowing back to the tap water piping that is the supply source of the cleansing water.
  • Relief valve 51 of this exemplary embodiment is configured by relief valve body 51a and relief spring 51b. Then, when tank 8a is turned upside down, set pressure of relief spring 51b of relief valve 51 is set to, for example, 0.1 MPa such that relief valve body 51a is not opened at water head pressure of the cleansing water. On the other hand, relief valve 51 is set so as to be opened at pressure lower than pressure at which tank 8a is damaged (for example, 0.4 MPa). Consequently, internal pressure of tank 8a is suppressed to a predetermined pressure or less, and reliability is enhanced.
  • FIG. 6 is a time chart showing an example of operation of the sanitary cleansing device according to the first exemplary embodiment.
  • FIG. 7 is a block diagram of the water level controller of the controller of the sanitary cleansing device according to the first exemplary embodiment.
  • FIG. 6 shows a flow of operation from when a user enters a toilet room until when the user leaves a seat and leaves the room, in time series from time t1 to time t22.
  • third sensor 11c of water level sensor 11 detects whether or not an amount of cleansing water in tank 8a is at the upper limit water level.
  • the sanitary cleansing device is used, and after the user leaves the seat, water is supplied until the water level of tank 8a reaches a full level (upper limit water level) (until third sensor 11c detects the cleansing water), and preparation is made for next use.
  • solenoid valve 7 is turned on and water is supplied until third sensor 11c detects the cleansing water.
  • flow rate calculator 4s2 of water level controller 4s calculates a flow rate (referred to as flow rate reading in the figure), outputs a signal corresponding to the flow rate, and adjusts the number of rotations of displacement pump 14 through pump controller 4s3.
  • flow rate calculator 4s2 first calculates an actual flow rate per unit time from reduction speed of the water level of tank 8a.
  • controller 4 stops the toilet bowl cleansing and the preheating.
  • a human body is detected, and in time t4 after, for example, 6 seconds, the user sits on a toilet seat.
  • nozzle cleansing nozzle 3 After the user has relieved himself/herself, in time t5, when the user presses down buttock switch 303 (or bidet switch 304) of the operation part such as remote controller 300, nozzle cleansing nozzle 3 first performs nozzle cleansing at a position where buttock nozzle 1 (or bidet nozzle 2) is housed in a main body of the sanitary cleansing device. Then, after the nozzle cleansing is performed for a predetermined time, buttock nozzle 1 is made to protrude toward inside of the toilet bowl from the main body to a cleansing position, in time t6, and starts human body cleansing in time t7.
  • the cleansing water in tank 8a is used, and displacement pump 14 and switching valve 16 are driven in accordance with a cleansing mode of each cleansing nozzle. Additionally, heater 12h of heat exchanger 12 is energized to heat cleansing water during use of the cleansing water.
  • solenoid valve 7 When the water level of the inside of tank 8a is reduced up to first sensor 11b in time t8 during the human body cleansing with cleansing water force "weak", solenoid valve 7 is turned on while the human body cleansing is continued, and water is supplied till time t9 when third sensor 11c detects the upper limit water level (full level) of cleansing water.
  • water flow rate calculator 4s2 of level controller 4s of controller 4 calculates an actual flow rate per unit time that is used during human body cleansing with "weak”, at timing of time t10 when the water level of the inside of tank 8a is reduced from third sensor 11c to second sensor 11a, and outputs a signal corresponding to the flow rate.
  • water level controller 4s of controller 4 controls displacement pump 14 through pump controller 4s3, and corrects the number of rotations or the like to perform adjustment. Consequently, it is possible to accurately adjust a jetting amount of cleansing water controlled by displacement pump 14.
  • the flow rate reading is not performed. That is, only in a case where the water level of the cleansing water in tank 8a is lowered from the upper limit water level of third sensor 11c to the lower limit water level of first sensor 11b in a single cleansing mode, the flow rate reading is performed, and adjustment by flow rate correction or the like is performed. Consequently, it is possible to accurately perform pumping at an accurate flow rate in each cleansing mode.
  • an installation position is determined such that stored water quantity (capacity) of cleansing water between third sensor 11c and first sensor 11b of tank 8a is 60 cc. This reason is that, even in a case where the human body cleansing is performed, for example, at a minimum flow rate of about 300 cc/min (in a case where the buttock cleansing is performed with cleansing water force "weak") for only 15 seconds, a flow rate is always adjusted at least once.
  • controller 4 and water level controller 4s stop driving of displacement pump 14, and heater 12h of heat exchanger 12. At this time, water is supplied until the water level of the cleansing water in tank 8a reaches the full level that is the upper limit water level (detected by third sensor 11c).
  • controller 4 moves the cleansing nozzle from a protruding position to a housing position of the inside of the main body. Thereafter, in a period from time t17 to time t18, the nozzle that has been used at the housing position is after-cleansed, and the operation is stopped.
  • water level controller 4s of controller 4 opens solenoid valve 7, and supplies cleansing water into tank 8a to make the cleansing water reach the full level.
  • water level controller 4s of controller 4 suitably performs correction by a flow rate value measured by water level sensor 11, while basically controlling a flow rate of cleansing water discharged by displacement pump 14.
  • the correction is not necessarily performed in each cleansing mode every time, but may be performed in a case where a flow rate gap is caused by variations in components, an influence of aged deterioration during use for a long period, or the like. Consequently, a proper flow rate can be jetted from the cleansing nozzle according to each cleansing mode for a long period.
  • Controller 4 of sanitary cleansing device of this exemplary embodiment has a microcomputer (not shown), and previously stores an optimum flow rate in each cleansing mode, and an optimum flow rate in water force selected by the user. Then, controller 4 corrects the number of rotations of displacement pump 14 or the like based on output of water level sensor 11 to perform driving such that the flow rate becomes a flow rate corresponding to the cleansing mode.
  • water level controller 4s of controller 4 of the sanitary cleansing device has at least time detector 4s1, flow rate calculator 4s2, pump controller 4s3, water level detector 4s4, and solenoid valve controller 4s5.
  • Time detector 4s1 measures time until the water level of tank 8a reaches the lower limit water level from the upper limit water level, based on a signal of water level sensor 11.
  • Flow rate calculator 4s2 calculates a flow rate discharged by displacement pump 14 by dividing a capacity from the upper limit water level to the lower limit water level of tank 8a (corresponding to a capacity of cleansing water) by the time measured by time detector 4s1.
  • Pump controller 4s3 corrects and adjusts operation speed (the number of rotations, or the like) of displacement pump 14 such that the flow rate becomes a flow rate selected with water force setting switches 307 and 308 of the operation part by the user, based on a value of the flow rate calculated by flow rate calculator 4s2.
  • Water level detector 4s4 detects the water level of the cleansing water in tank 8a, based on the signal detected by water level sensor 11 provided in tank 8a.
  • Solenoid valve controller 4s5 controls solenoid valve 7 so as to maintain the cleansing water in tank 8a within a range from the upper limit water level to the lower limit water level, and supplies tap water into tank 8a.
  • FIG. 8 is a flowchart showing the correction operation of the water level controller of the controller in the sanitary cleansing device of this exemplary embodiment.
  • FIG. 8 illustrates the correction operation of the water level controller in a case where the flow rate is reduced for a period from time t2 to time t3 of FIG. 6 , as an example.
  • controller 4 first protrudes buttock nozzle 1 (or bidet nozzle 2) instructed by the operation part such as the remote controller 300, into toilet bowl 700 (nozzle protrusion). Then, a flow passage that leads to buttock nozzle 1 (or bidet nozzle 2) instructed by switching valve 16 is opened, and cleansing is started (Step S1).
  • water level controller 4s causes water level detector 4s4 to determine whether or not third sensor 11c of water level sensor 11 is soaked in the cleansing water (Step S2). Second sensor 11a of water level sensor 11 is installed at the lowest position of a common sensor (is always soaked in the water).
  • the water level of the cleansing water is at the upper limit water level of tank 8a. This state is determined by detection of a current between second sensor 11a and third sensor 11c of water level sensor 11 by water level detector 4s4.
  • solenoid valve controller 4s5 of water level controller 4s controls so as to maintain a state where solenoid valve 7 is closed (turn off solenoid valve 7) (Step S3).
  • Step S2 in a case where third sensor 11c of water level sensor 11 is not soaked in the cleansing water (NO in Step S2), a signal is output to solenoid valve controller 4s5 when water level detector 4s4 detects the lower limit water level at which first sensor 11b does not detect the cleansing water (not shown), solenoid valve 7 is turned on, and water is supplied up to the upper limit water level (Step S11).
  • time detector 4s1 of water level controller 4s starts counting time from the state where third sensor 11c of water level sensor 11 is soaked in the cleansing water (Step S4).
  • displacement pump 14 jets the cleansing water from buttock nozzle 1, so that the water level of the cleansing water in tank 8a is gradually lowered.
  • Water level controller 4s causes water level detector 4s4 to determine whether or not first sensor 11b of water level sensor 11 is soaked in the cleansing water (Step S5). At this time, in a case where first sensor 11b of water level sensor 11 is not soaked in the cleansing water (NO in Step S5), the water level of the cleansing water is at the lower limit water level of tank 8a. That is, water level detector 4s4 does not detect a current between first sensor 11b and second sensor 11a. On the other hand, in a case where first sensor 11b of water level sensor 11 is soaked in the cleansing water (YES in Step S5), water level detector 4s4 waits until first sensor 11b is not soaked in the cleansing water.
  • time detector 4s1 of water level controller 4s terminates the counting of the time (Step S6). Consequently, time t during which the cleansing water in tank 8a is reduced from the upper limit water level detected by third sensor 11c to the lower limit water level detected by first sensor 11b is measured.
  • Water flow rate calculator 4s2 of level controller 4s calculates flow rate V by dividing capacity Q of the cleansing water in tank 8a from the upper limit water level detected by third sensor 11c to the lower limit water level detected by first sensor 11b, by time t described above.
  • Step S8 set flow rate Vi previously jetted from displacement pump 14 in the cleansing mode is compared with flow rate V calculated in the above measurement (Step S8).
  • pump controller 4s3 of water level controller 4s maintains the number of rotations of displacement pump 14 (Step S9), returns to Step S2, and performs similar processes subsequent to Step S2.
  • pump controller 4s3 of water level controller 4s corrects and adjusts the number of rotations of displacement pump 14 such that set water volume Vi is equal to calculated flow rate V (Step S10), returns to Step S2, and performs similar processes subsequent to Step S2.
  • water level controller 4s of the sanitary cleansing device of this exemplary embodiment includes water level controller 4s that has at least time detector 4s1, flow rate calculator 4s2, and pump controller 4s3. Consequently, the operation speed (the number of rotations or the like) of displacement pump 14 is automatically adjusted so as to mantain a desired flow rate set with water force setting switches 307 and 308 by the user, without any additional flow sensor. Furthermore, in a case where a flow rate per unit time can be calculated based on the flow rate measured by water level sensor 11, the number of rotations of displacement pump 14 or the like can be corrected by use of a calculated value to perform control. As a result, it is possible to realize a downsized, compact and low-cost sanitary cleansing device that does not cause a gap with a set flow rate, and has a good feeling in use.
  • relief valve 51 is not provided on a lower part or a bottom of tank 8a, but provided to face air layer 8e at the upper part of tank 8a. Therefore, valve seat contact surface 51c of relief valve body 51a is in the air in ordinary use, and therefore relief valve 51 is never exposed (soaked) to the cleansing water.
  • relief valve 51 is not provided on the lower part or the bottom of tank 8a, but provided to face air layer 8e at the upper part of tank 8a, so that it is possible to further reduce a risk of no water heating by heat exchanger 12.
  • controller 4 of this exemplary embodiment supplies water until the water level of the cleansing water in tank 8a reaches the upper limit water level (corresponding to a position of third sensor 11c), and thereafter solenoid valve controller 4s5 stops driving operation of solenoid valve 7 or the like. Consequently, the water level of the cleansing water in tank 8a can be made at a position higher than upper end position 12g of heater 12h of heat exchanger 12 shown in FIG. 4 . As a result, heater 12h of heat exchanger 12 is not exposed from the cleansing water, so that it is possible to prevent no water burning by heater 12h (no water heating of heat exchanger 12).
  • Controller 4 of this exemplary embodiment causes the microcomputer of controller 4 to measure a predetermined time until the water level of the cleansing water in tank 8a normally sufficiently reaches the upper limit water level after solenoid valve 7 is opened (solenoid valve 7 is turned on). Then, in a case where solenoid valve 7 is not closed (solenoid valve 7 is not turned off) even when the measured predetermined time has elapsed, solenoid valve 7 is forcibly closed through solenoid valve controller 4s5 of water level controller 4s, and energization to heater 12h or the like is stopped. Consequently, even in a case where water level sensor 11 is broken, controller 4 can safely stop operation of main body 200 of the sanitary cleansing device.
  • vacuum valve body 31a of vacuum braker 31 closes upper valve seat 31d to allow sealing.
  • pressure in the tank is released from relief valve 51, and water is allow to escape into the toilet bowl.
  • Controller 4 of this exemplary embodiment has water level controller 4s that maintains the water level of the inside of tank 8a and air layer 8e within predetermined ranges, by opening solenoid valve 7 when the water level of tank 8a is at the lower limit water level, and closing solenoid valve 7 when the water level is at the upper limit water level. Then, water level controller 4s controls opening/closing of solenoid valve 7 with the signal from water level sensor 11, thereby enabling a simple configuration that needs no reducing valve. Consequently, a water surface of tank 8a is maintained between the upper limit water level and the lower limit water level, and water is stably supplied to displacement pump 14 at water pressure in which the inside of the tank is open to the atmosphere. As a result, it is possible to realize a downsized and compact sanitary cleansing device.
  • FIG. 9 is a schematic diagram of an atmosphere open part of the sanitary cleansing device according to the second exemplary embodiment of the present invention.
  • the sanitary cleansing device of this exemplary embodiment is different from the sanitary cleansing device of the first exemplary embodiment in which atmosphere open part 8 and heat exchanger 12 are formed by separate components, in that atmosphere open part 8 and heat exchanger 12 are integrally formed.
  • Other configurations are identical to those of the sanitary cleansing device of the first exemplary embodiment, and descriptions thereof are omitted.
  • heater 12h of heat exchanger 12 is incorporated in and integrally formed with tank 8a of atmosphere open part 8.
  • cleansing water is supplied so as to trace a surface of heater 12h of heat exchanger 12 from water inlet 8b of tank 8a. Consequently, heat exchange on the surface of heater 12h is facilitated, and the heat exchange efficiency to the cleansing water can be enhanced. As a result, warm water of the cleansing water stored in tank 8a is stirred, so that temperature irregularity of the cleansing water can be reduced.
  • Other operation and effects are identical to those of the sanitary cleansing device of the first exemplary embodiment, and therefore descriptions thereof are omitted
  • water inlet 8b is provided in the upper part of tank 8a so as to face air layer 8e.
  • the position of water inlet 8b is not limited to this.
  • water inlet 8b may be provided at at least a position where the cleansing water is present from a lower part of a side surface of tank 8a, so that the cleansing water is supplied into tank 8a. Consequently, it is possible to prevent generation of water supply noise in a case where water is supplied from the upper part of tank 8a to air layer 8e, or mixing of bubbles into the cleansing water in tank 8a. Additionally, the mixing of bubbles into the cleansing water is suppressed, so that it is possible to enhance reliability of water level detection of the cleansing water in tank 8a by water level sensor 11, and to improve measurement accuracy of a flow rate.
  • water inlet 8b is provided on the lower part of the side surface of tank 8a.
  • the position of water inlet 8b is not limited to this.
  • water inlet 8b may be provided in the upper part of tank 8a so as to face air layer 8e. Consequently, the water supply noise can make the user recognize water supply of the cleansing water.
  • the sanitary cleansing device includes the toilet bowl nozzle.
  • the present invention is not limited to this.
  • a sanitary cleansing device that includes no toilet bowl nozzle may be employed. Consequently, it is possible to realize a sanitary cleansing device having a simple configuration at a low cost.
  • a sanitary cleansing device of the present invention includes: a cleansing nozzle configured to discharge cleansing water; and a cleansing water flow passage configured to allow the cleansing water from a supply source to flow toward the cleansing nozzle.
  • the cleansing water flow passage has: a displacement pump configured to control a flow rate of the cleansing water discharged from the cleansing nozzle; an atmosphere open part disposed at an upstream side of the displacement pump, configured to open a part of the cleansing water flow passage to atmosphere, and having a tank for storing the cleansing water, and a water level sensor for detecting a water level in the tank to output a signal; a solenoid valve configured to pass and block the cleansing water supplied from the supply source to the atmosphere open part; and a controller configured to control the displacement pump and the solenoid valve. Furthermore, the controller calculates a flow rate of the cleansing water supplied per unit time from the supply source based on the signal of the water level sensor, and corrects control of the displacement pump.
  • the displacement pump is disposed downstream of the atmosphere open part, so that the number of rotations of the displacement pump is controlled with no influence of supply pressure of the water supply source, and the flow rate of the cleansing water discharged from the cleansing nozzle is controlled. Furthermore, the water level sensor measures a flow rate of water that has actually passed, and feeds back the measured flow rate to the controller, so that contorol of the displacement pump is corrected. Consequently, with the correction of the flow rate detected by the water level sensor, the displacement pump can be controlled with no influence of variations in components, aged deterioration, or the like. As a result, it is possible to perform accurate and stable flow rate control over a long period without providing any flow sensor or flow control valve, and to realize a sanitary cleansing device that has a simple configuration and has a good feeling in use.
  • the sanitary cleansing device of the present invention may include a heat exchanger having a heater for heating the cleansing water, between downstream of the atmosphere open part and upstream of the displacement pump, wherein the controller may control the heater.
  • the water can be made to flow in the heat exchanger from the tank of the atmosphere open part by operation of the displacement pump, and therefore inflow water to the heat exchanger is stably controlled with no influence of supply pressure of the supply source.
  • the displacement pump can reduce influence of a drawn flow rate due to an environmental factor of the supply source. Consequently, precision flow rate control improves precision of a heating temperature of the cleansing water by heating temperature control by the heater of the heat exchanger, and a stable jet can be discharged.
  • the tank of the atmosphere open part may have a function of inflow water temperature buffer part.
  • the temperature dispersion can be buffered to some extent. Therefore, cleansing water with no rapid temperature change can be supplied from the tank to the heat exchanger by the buffered cleansing water.
  • the heater of the heat exchanger heats the cleansing water, a burden of electric power or the like can be reduced, and irregularity of a discharge temperature of the cleansing water can be prevented.
  • the cleansing nozzle has a nozzle part including at least a private part cleansing nozzle for performing private part cleansing, and a bidet cleansing nozzle
  • the sanitary cleansing device further includes an operation part configured to allow selection of a cleansing mode by the nozzle part.
  • the controller may control a jet flow rate of the cleansing water in accordance with the cleansing mode of the nozzle part selected by the operation part, and correct flow rate control of the displacement pump based on a flow rate detected by the water level sensor at a time of cleansing in the cleansing mode selected by the operation part.
  • the flow rate discharged from the displacement pump is corrected based on the flow rate detected by the water level sensor, to be controlled and adjusted, according to the cleansing mode selected by the operation part. Consequently, the flow rate according to the cleansing mode can be more accurately controlled by the displacement pump.
  • the water level sensor may detect an upper limit water level and a lower limit water level in the tank
  • the controller may have a water level controller configured to calculate a flow rate per unit time when the water level is changed from the upper limit water level to the lower limit water level, and a quantity of stored water from the lower limit water level to the upper limit water level may be set to be a quantity of water smaller than a total flow rate used for a single standard cleansing time in any one of a plurality of the cleansing modes.
  • the water level of the inside of the tank is changed from the upper limit water level to the lower limit water level at least once. Therefore, the flow rate per unit time is calculated, and the displacement pump is controlled, so that the flow rate of the cleansing water to be jetted is corrected. Therefore, the quantity of water stored in the tank can be minimized. Consequently, a main body can be downsized, and the flow rate can be suitably corrected without failure.
  • the sanitary cleansing device of the present invention may include a heater of a heat exchanger is disposed inside the tank of the atmosphere open part for heating at least the stored cleansing water. Consequently, it is possible to reduce the number of components of the sanitary cleansing device. As a result, it is possible to realize a compact and low-cost sanitary cleansing device.
  • the present invention is capable of stably supplying a jet flow having arbitrary pulsation from a cleansing nozzle, and therefore is useful not only for a warm water cleansing toilet seat, but a sanitary cleansing device for a face, a head, hands, feet, and the like, or a cleansing device for cleansing of animals such as pets or things other than living things.

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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)
EP13813147.9A 2012-07-06 2013-03-08 Sanitäre reinigungsvorrichtung Active EP2871295B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012152464 2012-07-06
PCT/JP2013/001514 WO2014006791A1 (ja) 2012-07-06 2013-03-08 衛生洗浄装置

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EP2871295A1 true EP2871295A1 (de) 2015-05-13
EP2871295A4 EP2871295A4 (de) 2015-11-18
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EP3006634A1 (de) * 2014-10-09 2016-04-13 Roca Sanitario, S. A. Vorrichtung für einen toilettensitz zur verwendung als bidet und toilette und toilettensitz mit der besagten vorrichtung
IT201800003589A1 (it) * 2018-03-15 2018-06-15 Maurizio Masciullo Sistema elettrico e idraulico per lo sversamento di acqua all'interno del vaso sanitario
IT201900000643A1 (it) * 2019-01-15 2020-07-15 Sea Eagle Ind Group S R L Sanitario a scomparsa con "washlet"
EP3995637A1 (de) * 2020-11-04 2022-05-11 Geberit International AG Wc-duschsystem
WO2023150841A1 (en) * 2022-02-14 2023-08-17 Caroma Industries Limited Water cleansing system and method for water usage environment

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JP6371972B2 (ja) * 2014-09-09 2018-08-15 パナソニックＩｐマネジメント株式会社 衛生洗浄装置
JP6371974B2 (ja) * 2014-09-12 2018-08-15 パナソニックＩｐマネジメント株式会社 衛生洗浄装置
CN107109831B (zh) * 2014-11-21 2019-09-27 松下知识产权经营株式会社 卫生清洗装置
CN104775490B (zh) * 2015-03-09 2016-06-08 厦门优胜卫厨科技有限公司 一种清洁装置及其清洁方法
JP2018053443A (ja) * 2016-09-26 2018-04-05 アイシン精機株式会社 温水洗浄便座装置
CN107340127B (zh) * 2017-08-09 2023-09-05 台州市质量技术监督检测研究院 智能坐便器喷嘴伸缩时间测量装置和测量方法
JP7010682B2 (ja) * 2017-09-25 2022-01-26 リンナイ株式会社 浴槽洗浄装置
CN109098241A (zh) * 2018-08-09 2018-12-28 厦门瑞尔特卫浴科技股份有限公司 一种智能马桶及该智能马桶的自洁控制方法
CN111896282B (zh) 2020-06-28 2022-08-12 厦门科牧智能技术有限公司 一种水路自检方法和装置
CN114108760A (zh) * 2020-08-27 2022-03-01 地尔肠道健康科技有限公司 一种电坐便器的泄压工作步骤
CN117547773B (zh) * 2023-11-20 2024-05-14 江苏铭星供水设备有限公司 一种智慧型装配式消防箱泵

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3006634A1 (de) * 2014-10-09 2016-04-13 Roca Sanitario, S. A. Vorrichtung für einen toilettensitz zur verwendung als bidet und toilette und toilettensitz mit der besagten vorrichtung
IT201800003589A1 (it) * 2018-03-15 2018-06-15 Maurizio Masciullo Sistema elettrico e idraulico per lo sversamento di acqua all'interno del vaso sanitario
IT201900000643A1 (it) * 2019-01-15 2020-07-15 Sea Eagle Ind Group S R L Sanitario a scomparsa con "washlet"
EP3995637A1 (de) * 2020-11-04 2022-05-11 Geberit International AG Wc-duschsystem
WO2023150841A1 (en) * 2022-02-14 2023-08-17 Caroma Industries Limited Water cleansing system and method for water usage environment

Also Published As

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EP2871295A4 (de) 2015-11-18
WO2014006791A1 (ja) 2014-01-09
CN104411896A (zh) 2015-03-11
EP2871295B1 (de) 2016-11-30
JP5578295B2 (ja) 2014-08-27
CN104411896B (zh) 2015-09-23
JPWO2014006791A1 (ja) 2016-06-02

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