WO2012014408A1 - Dishwasher - Google Patents

Dishwasher Download PDF

Info

Publication number
WO2012014408A1
WO2012014408A1 PCT/JP2011/004088 JP2011004088W WO2012014408A1 WO 2012014408 A1 WO2012014408 A1 WO 2012014408A1 JP 2011004088 W JP2011004088 W JP 2011004088W WO 2012014408 A1 WO2012014408 A1 WO 2012014408A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
turbidity
cleaning
washing
turbidity detection
Prior art date
Application number
PCT/JP2011/004088
Other languages
French (fr)
Japanese (ja)
Inventor
恵介 森田
宮内 隆
Original Assignee
パナソニック株式会社
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.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to CN201180037333.6A priority Critical patent/CN103037748B/en
Priority to EP11812010.4A priority patent/EP2599423A1/en
Priority to KR1020137002262A priority patent/KR101434120B1/en
Publication of WO2012014408A1 publication Critical patent/WO2012014408A1/en

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0049Detection or prevention of malfunction, including accident prevention
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/46Devices for the automatic control of the different phases of cleaning ; Controlling devices
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4297Arrangements for detecting or measuring the condition of the washing water, e.g. turbidity
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • A47L15/0023Water filling
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0047Energy or water consumption, e.g. by saving energy or water
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4214Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225Arrangements or adaption of recirculation or discharge pumps
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/04Crockery or tableware details, e.g. material, quantity, condition
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/09Water level
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/10Water cloudiness or dirtiness, e.g. turbidity, foaming or level of bacteria
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/01Water supply, e.g. opening or closure of the water inlet valve
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/30Regulation of machine operational steps within the washing process, e.g. performing an additional rinsing phase, shortening or stopping of the drying phase, washing at decreased noise operation conditions

Definitions

  • the present invention relates to a dishwasher that cleans an object to be cleaned such as tableware.
  • Such a conventional dishwasher includes a washing tank for storing dishes, a washing nozzle disposed inside the washing tank, and a washing pump for supplying washing water to the washing nozzle.
  • washing dishes when washing dishes, a predetermined amount of washing water is supplied into the washing tank while the dishes are stored in the washing tank. Then, the cleaning water stored in the lower portion of the cleaning tank is supplied to the cleaning nozzle by the cleaning pump. Washing water is sprayed from the washing nozzle to the tableware stored in the washing tank, and the tableware is washed. The washing water sprayed on the tableware is stored at the bottom of the washing tank and is sent again to the washing nozzle by the washing pump.
  • the conventional dishwasher is equipped with a drainage pump for discharging the washing water from the washing tank to the outside of the machine, and the washing water can be discharged outside the machine through the drainage path. And in the middle of a drainage path, it has a turbidity detection part, and detects the turbidity of the wash water discharged.
  • a turbidity detection unit a transmissive optical sensor including a light emitting unit and a light receiving unit is used. And the washing
  • the initial water After the water supply is completed, the initial water reaches the turbidity detector provided in the middle of the drainage path.
  • the initial water permeability (turbidity) is detected, and the value is used as a reference value.
  • the turbidity detection unit detects the permeability of the cleaning water discharged after the cleaning is completed, and detects the amount of change from the initial water permeability. Based on the detected amount of change, it is possible to determine how dirty the drained washing water is, that is, the degree of dirt of the tableware that has been washed in the washing tank, by quantifying it.
  • the present invention is a dishwasher that detects turbidity of washing water in a turbidity detection unit provided in the middle of a drainage path, and a large amount of dirt is introduced into the washing tank, and after ending water supply, the turbidity detection unit becomes dirty. It is an object of the present invention to provide a dishwasher that can determine the correct degree of contamination even when water reaches and can appropriately perform cleaning according to the contamination of an object to be cleaned.
  • the dishwasher according to the present invention includes a washing tank for storing an object to be washed, a washing unit for washing the object to be washed in the washing tank, a water supply device for supplying washing water into the washing tank, and the dishwasher from the washing tank.
  • a drainage device for discharging washing water and a drainage path provided in communication with the drainage device.
  • a turbidity detection unit that is provided in the drainage path and detects information on the turbidity of the cleaning water in the drainage path, and the operation of the cleaning unit according to the information on the turbidity of the cleaning water detected by the turbidity detection unit
  • a control unit that changes and controls the conditions.
  • a control part compares the value which the turbidity detection part detected in each state of the state without water at the time of a driving
  • FIG. 1 is a diagram showing a cross-sectional configuration of a dishwasher according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing a cross-sectional configuration of a pump in the dishwasher according to the embodiment of the present invention.
  • FIG. 3 is a perspective view of the turbidity detection unit of the dishwasher in the embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of the turbidity detection part of the dishwasher according to the embodiment of the present invention as seen from the side of the convex part.
  • FIG. 5 is a cross-sectional view of the turbidity detection portion of the dishwasher according to the embodiment of the present invention as viewed from the front of the convex portion.
  • FIG. 6 is a flowchart showing an initial setting sequence for turbidity detection according to the embodiment of the present invention.
  • FIG. 1 is a diagram showing a cross-sectional configuration of a dishwasher 50 according to an embodiment of the present invention.
  • the dishwasher body 1 has a washing tank 2 inside.
  • a water supply device 3 supplies water or hot water (cleaning water) into the cleaning tank 2.
  • the water supply device 3 is controlled by the control unit 13 so as to stop its operation when a predetermined water level is reached by a water level sensor 4 provided in communication with the cleaning tank 2.
  • the bottom of the cleaning tank 2 has a water storage part 2a.
  • the pump 5 which is connected to the water storage part 2a and driven by a motor is attached.
  • the dishwasher 50 further includes a washing nozzle 9, a heater 10, a dish basket 11, a drainage path 12, a turbidity detection unit 14, a vertical part 18, and a washing path 17.
  • FIG. 2 is a diagram showing a cross-sectional configuration of the pump 5 in the dishwasher 50 according to the embodiment of the present invention.
  • the pump 5 has a pump casing 6, an impeller 7, and a switching valve 8.
  • the pump casing 6 is provided with a cleaning side pipe 6 a that discharges the cleaning water of the water storage unit 2 a to the cleaning nozzle 9 and a drain side pipe 6 b that discharges the cleaning water of the water storage unit 2 a to the drainage path 12.
  • the switching valve 8 is configured to rotate around the rotation shaft 8a so that the drain side pipe 6b can be opened and closed.
  • the switching valve 8 has the flap part 8b, and can open and close the drain side pipe 6b according to the direction of water flow.
  • the cleaning water flows toward the cleaning side pipe 6a, and the pump 5 functions as a cleaning pump.
  • the switching valve 8 is pressed against the wall of the entrance of the drain side pipe 6b by pressure due to the flow of the wash water, the drain side is closed, and the wash water does not flow into the drain path 12 side.
  • the washing water applies pressure so as to open the switching valve 8, and the switching valve 8 opens and the washing water flows to the drainage path 12 side.
  • the pump 5 functions as a drainage pump (drainage device).
  • the switching valve 8 does not close the drain side pipe 6b.
  • the pump 5 functions as a cleaning / drainage combined use pump.
  • the case where the pump 5 functions as a cleaning pump is described as a cleaning pump 5a
  • the case where the pump 5 functions as a drainage pump is described as a drainage pump (drainage device) 5b.
  • washing water is circulated inside the dishwasher body 1 by the washing pump 5a.
  • the cleaning water supplied into the cleaning tank 2 is sucked into the cleaning pump 5a from the water storage section 2a, and passes through the cleaning path 17 from the cleaning side pipe 6a by the cleaning pump 5a, and is provided at the inner bottom of the cleaning tank 2 9 is supplied.
  • the cleaning water sprayed from the cleaning nozzle 9 circulates along a route that returns to the water storage unit 2a again after cleaning the object to be cleaned (tableware or the like) accommodated in the cleaning tank 2.
  • the cleaning pump 5a, the cleaning nozzle 9, and the cleaning path 17 constitute a cleaning unit.
  • a heater 10 for heating cleaning water is provided between the cleaning nozzle 9 and the bottom of the cleaning tank 2.
  • a dish basket 11 is arranged so that an object to be cleaned can be arranged in an orderly manner and cleaning water can be effectively sprayed onto the object to be cleaned, thereby performing efficient cleaning.
  • the drainage pump 5b discharges the wash water from the drainage side pipe 6b through the drainage path 12 to the outside of the machine.
  • the control unit 13 drives and controls electrical components such as the water supply device 3, the pump 5, and the heater 10.
  • a vertical portion 18 in which the wash water to be discharged flows substantially upward (vertical direction) is provided on the outer side of the drainage pump 5b, that is, in the middle of the downstream drainage passage 12 through which the drainage flows.
  • a turbidity detection unit 14 that detects the turbidity of the washing water is disposed outside 18.
  • FIG. 3 is a perspective view of the turbidity detection unit 14 of the dishwasher 50 according to the embodiment of the present invention
  • FIG. 4 is a cross-sectional view of the turbidity detection unit 14 viewed from the side of the convex portion 15.
  • FIG. 5 is a cross-sectional view of the turbidity detection unit 14 as viewed from the front of the convex portion 15.
  • the convex part 15 protruded from the drainage path 12 is provided in the vertical part 18 in the middle of the drainage path 12.
  • the inner surfaces of the lower surface 15a and the upper surface 15b of the convex portion 15 are respectively inclined as shown in FIG. More specifically, the inner surface of the lower surface 15a is formed so as to be inclined such that the side connected to the drainage path 12 of the lower surface 15a is lower, and the inner surface of the upper surface 15b is the side connected to the drainage path 12 of the upper surface 15b. Inclined so as to be higher. In other words, the inner surface of the lower surface 15a is inclined outward toward the downstream side of the drainage passage 12, and the inner surface of the upper surface 15b is inclined inward toward the downstream side of the drainage passage 12 (see FIG. 4). Further, the side surfaces 15c on both sides are substantially arranged in the vertical direction, and the two surfaces are opposed to each other (see FIG. 5).
  • the turbidity detection part 14 is arrange
  • the distance between the light emitting portion 14a and the light receiving portion 14b is set to an appropriate distance according to the ability.
  • the width of the convex portion 15 (distance between the side surfaces 15c on both sides: W1) is made smaller than the width (W2) in the vertical portion 18 of the drainage path 12 to have an appropriate distance with respect to the width of the drainage path 12 A convex portion 15 is provided. Thereby, it is possible to take an appropriate distance necessary for turbidity detection by the turbidity detection unit 14.
  • the drainage channel 12 has a cross-sectional area necessary for discharging the wash water to the outside of the machine. Further, the light emitting unit 14a and the light receiving unit 14b of the turbidity detecting unit 14 also have a necessary distance from the input / output relationship. However, when the turbidity detection unit 14 is provided outside the entire drainage path 12, it may not match the required distance between the light emitting unit 14a and the light receiving unit 14b.
  • the width (W1) of the convex portion 15 is made smaller than the width (W2) of the drainage passage 12, and the convex portion 15 that is smaller than the width of the drainage passage 12 and has an appropriate distance is provided. .
  • the turbidity detection unit 14 it is possible to secure an appropriate distance necessary for turbidity detection by the turbidity detection unit 14. Therefore, it is possible to satisfy both of ensuring the drainage capacity by widening the cross-sectional area of the drainage path 12 and ensuring the detection accuracy of the turbidity detection unit 14.
  • the water supply device 3 is opened and water supply is started.
  • the water supply device 3 is closed to complete the water supply.
  • the motor for driving the pump 5 is not rotating, and the switching valve 8 is in a state where the drain side pipe 6b is not closed. Therefore, the cleaning water reaches the drainage path 12 communicating with the water storage part 2 a of the cleaning tank 2 through the inside of the pump 5. Then, the flush water is also filled in the drainage path 12 and the convex portion 15 at the position of the turbidity detection unit 14.
  • the switching valve 8 When the cleaning process is started, the switching valve 8 is closed on the drain side by the flow of the cleaning water, and the cleaning water does not enter the drain side. Therefore, in this state, it is impossible to detect the contamination of the cleaning water in the cleaning tank 2 while the initial cleaning water is confined in the drainage path 12.
  • the drain pump 5b When the cleaning process is completed and the contamination of the cleaning water in the cleaning tank 2 is detected, the drain pump 5b is operated for a short time and then stopped. Thereby, the dirty cleaning water in the cleaning tank 2 is allowed to enter the vicinity of the convex portion 15, which is a drainage path portion facing the turbidity detection unit 14, and the turbidity of the cleaning water can be measured. At this time, the vicinity of the convex portion 15 facing the turbidity detection portion 14 is already filled with the initial washing water from the time when the water supply is completed. Therefore, there is almost no discontinuous movement or disturbed movement of the washing water, and turbidity can be detected in a stable state.
  • control unit 13 changes the operating conditions of the cleaning pump 5a, the heater 10, the water supply device 3, or the drainage pump 5b, for example, by changing the number of times of rinsing. Thereafter, a process such as rinsing and drying is performed, and the operation is terminated.
  • FIG. 6 is a flowchart showing an initial setting sequence for turbidity detection according to the embodiment of the present invention.
  • the outline of the turbidity detection method in the dishwasher 50 of the present embodiment is as follows.
  • the turbidity detection unit 14 detects the permeability (turbidity) of the initial water that is not contaminated.
  • the value is used as a reference value.
  • the turbidity detection unit 14 detects the permeability (turbidity) of the cleaning water discharged after the cleaning is completed, and based on the amount of change from the reference value, how dirty the drainage is, that is, cleaning.
  • the degree of soiling of the tableware cleaned in the tank 2 is determined by quantification.
  • the control part 13 performs each process of the rinse after a washing
  • the permeability detected by the turbidity detection unit 14 has a characteristic that the state with water is higher than the state without water. However, when the washing water of the turbidity detection unit 14 is dirty after the water supply is finished, the permeability is lower than that in the absence of water even in the presence of water.
  • the turbidity detection unit 14 is an optical sensor provided with the light emitting unit 14a and the light receiving unit 14b facing each other.
  • the dishwasher 50 emits light in the absence of water after starting operation (step S1), before draining or after draining (in FIG. 6, the case after draining (step S2) is described).
  • a predetermined initial voltage value is supplied to the unit 14a, and the received light voltage T1 of the first transmittance is detected by the light receiving unit 14b of the turbidity detecting unit 14 provided in the middle of the drainage path 12 (step S3).
  • step S4 a water supply process is performed (step S4), and in the state where there is water thereafter, the same voltage value is supplied to the light emitting unit 14a, and the received light voltage T2 having the second transmittance is received by the light receiving unit of the turbidity detecting unit 14. 14b (step S5).
  • the control unit 13 compares T1 and T2 (step S6). If T2> T1, it is determined that the initial water is not contaminated, and the second transmittance (light reception voltage T2) is adopted as the reference value. (Step S7).
  • the voltage supplied to the light emitting unit 14a is adjusted so that the light receiving voltage T2 of the light receiving unit 14b of the turbidity detecting unit 14 becomes a predetermined reference voltage value (step S8).
  • the reference voltage value is used to correct the turbidity of the washing water in order to correct the transmissivity of the side surface 15c of the convex portion 15, the individual difference between the light emitting portion 14a and the light receiving portion 14b, and the influence of aging. This is set as a reference value (reference value of received light voltage) for the degree of information, and is not necessarily limited to this method.
  • the process up to step S7 may be executed.
  • the control unit 13 controls to use the reference value at the previous operation without using the second transmittance (light reception voltage T2) as the reference value as described above. (Step S9). That is, the control unit 13 performs control such as using the voltage value supplied to the light emitting unit 14a during the previous operation.
  • any before the drainage at the time of an operation start and after drainage may be sufficient.
  • water is not present in the turbidity detector 14 and there is no water.
  • the turbidity detection unit 14 is in a waterless state. Therefore, by detecting before draining or after draining at the start of operation, the transmittance in the absence of water can be detected in any case.
  • the pump 5 is described as a cleaning / drainage pump that functions as two types of pumps, the cleaning pump 5a and the drainage pump 5b, by changing the rotation direction of the motor.
  • the switching valve 8 may be operated by a driving device to switch the flow of cleaning water to the cleaning side pipe 6a or the drainage side pipe 6b, and function as two types of pumps in one rotation direction.
  • the pump 5 with the switching valve 8 has been described.
  • the dishwasher 50 of the present embodiment in the initial setting sequence of turbidity detection, when detecting the permeability of the initial water after water supply serving as the reference value, the drainage path at the start of operation.
  • the turbidity detection unit 14 provided in the middle of No. 12 is caused to detect the transmittance in the absence of water. Then, the permeability in the absence of water and the permeability in the presence of water after water supply are compared. If the permeability in the presence of water is greater than the permeability in the absence of water, Use the value as the reference value. On the other hand, when the value of the permeability in the presence of water is equal to or less than the value of the permeability in the absence of water, the value is not adjusted to the reference value, and the reference value from the previous operation is used.
  • the dishwasher that detects the turbidity of the washing water by the turbidity detection unit provided in the middle of the drainage path, a large amount of dirt is introduced into the washing tank, and after the water supply is completed. Even when dirty water arrives at the turbidity detection unit, it is possible to determine the correct degree of contamination, and it is possible to perform cleaning according to the contamination of the object to be cleaned appropriately. Therefore, this invention is useful as a dishwasher etc. which wash

Landscapes

  • Washing And Drying Of Tableware (AREA)

Abstract

A dishwasher is provided with a washing tank for accommodating an object to be washed, a washing unit for washing the object to be washed in the washing tank, a water-supply system for supplying wash water into the washing tank, a drainage system for draining the wash water from the washing tank to the outside of the dishwasher, and a drainage pathway which is provided in communication with the drainage system. Also, the dishwasher is provided with a turbidity detection unit which detects the information associated with the turbidity of the wash water in the drainage pathway and which is provided to the drainage pathway, and a control unit for changing and controlling the operation conditions of the washing unit according to the information associated with the turbidity of the wash water detected by the turbidity detection unit. The control unit compares the values detected by the turbidity detection unit in either a state in which there is no water or a state in which there is the water after the water supply by the water-supply system at the start of the operation. As a result, the dishwasher determines whether or not the value detected by the turbidity detection unit in the state in which there is the water is adopted as the reference value of the information associated with the turbidity of the wash water.

Description

食器洗い機dishwasher
 本発明は、食器等の被洗浄物を洗浄する食器洗い機に関する。 The present invention relates to a dishwasher that cleans an object to be cleaned such as tableware.
 従来から、食器の洗浄に用いた洗浄水の濁度(透過度)を検出するための光センサを備えた食器洗い機が提案されている(例えば、特許文献1を参照)。 Conventionally, there has been proposed a dishwasher including an optical sensor for detecting the turbidity (permeability) of washing water used for washing dishes (see, for example, Patent Document 1).
 このような従来の食器洗い機は、食器を収容する洗浄槽と、洗浄槽内部に配設された洗浄ノズルと、洗浄ノズルに洗浄水を供給する洗浄ポンプとを備えている。 Such a conventional dishwasher includes a washing tank for storing dishes, a washing nozzle disposed inside the washing tank, and a washing pump for supplying washing water to the washing nozzle.
 従来の食器洗い機において、食器の洗浄を行う際には、洗浄槽内に食器が収容された状態で、洗浄槽内に所定量の洗浄水が供給される。そして、洗浄槽下部に貯留した洗浄水が、洗浄ポンプにより洗浄ノズルに供給される。洗浄槽内部に収容された食器に対して、洗浄ノズルから洗浄水が噴射されて、食器の洗浄が行われる。食器に噴射された洗浄水は、洗浄槽の底部に貯留し、洗浄ポンプにより再び洗浄ノズルに送られる。 In a conventional dishwasher, when washing dishes, a predetermined amount of washing water is supplied into the washing tank while the dishes are stored in the washing tank. Then, the cleaning water stored in the lower portion of the cleaning tank is supplied to the cleaning nozzle by the cleaning pump. Washing water is sprayed from the washing nozzle to the tableware stored in the washing tank, and the tableware is washed. The washing water sprayed on the tableware is stored at the bottom of the washing tank and is sent again to the washing nozzle by the washing pump.
 また、従来の食器洗い機は、洗浄槽の洗浄水を機外に排出するための排水ポンプを備えており、排水経路を通して機外に洗浄水を排出することができる。そして、排水経路の途中には、濁度検出部を有しており、排出される洗浄水の濁度を検出する。濁度検出部としては、発光部および受光部からなる透過型の光センサが用いられる。そして、濁度検出部による検出結果に基づいて、食器の洗浄制御が行われる。 In addition, the conventional dishwasher is equipped with a drainage pump for discharging the washing water from the washing tank to the outside of the machine, and the washing water can be discharged outside the machine through the drainage path. And in the middle of a drainage path, it has a turbidity detection part, and detects the turbidity of the wash water discharged. As the turbidity detection unit, a transmissive optical sensor including a light emitting unit and a light receiving unit is used. And the washing | cleaning control of tableware is performed based on the detection result by a turbidity detection part.
 従来の濁度検出方法の一例を説明する。給水終了後、排水経路の途中に設けた濁度検出部に、初期水が到達する。この初期水の透過度(濁度)を検出して、その値を基準値とする。洗浄終了後、濁度検出部により、洗浄終了後に排出される洗浄水の透過度を検出し、初期水の透過度からの変化量を検出する。この検出された変化量により、排水された洗浄水がどのくらい汚れているか、つまり、洗浄槽内で洗浄していた食器の汚れ度合いを数値化して判定することができる。 An example of a conventional turbidity detection method will be described. After the water supply is completed, the initial water reaches the turbidity detector provided in the middle of the drainage path. The initial water permeability (turbidity) is detected, and the value is used as a reference value. After completion of the cleaning, the turbidity detection unit detects the permeability of the cleaning water discharged after the cleaning is completed, and detects the amount of change from the initial water permeability. Based on the detected amount of change, it is possible to determine how dirty the drained washing water is, that is, the degree of dirt of the tableware that has been washed in the washing tank, by quantifying it.
 しかしながら、このような従来の食器洗い機においては、初期水の透過度を検出する際に、洗浄槽内に多量の汚れが投入されていた等の場合には、給水により初期水が汚れてしまう。このような場合、給水終了後、濁度検出部に汚れた初期水が到達する。この汚れた初期水の透過度を基準値として、洗浄終了後に排出される洗浄水の透過度を検出した場合、その基準値からの変化量は、初期水が汚れていない場合の変化量よりも小さくなる。このため、正しい汚れ度合いを判定できず、食器等の被洗浄物の汚れに応じた適切な洗浄ができなくなる。 However, in such a conventional dishwasher, when a large amount of dirt is introduced into the washing tank when the initial water permeability is detected, the initial water becomes dirty due to water supply. In such a case, the dirty initial water reaches the turbidity detection unit after the water supply is completed. Using this dirty initial water permeability as a reference value, when detecting the permeability of the wash water discharged after cleaning, the amount of change from the reference value is more than the amount of change when the initial water is not dirty. Get smaller. For this reason, it is impossible to determine the correct degree of dirt, and it becomes impossible to perform appropriate cleaning according to the dirt of the object to be cleaned such as tableware.
特開平4-319329号公報JP-A-4-319329
 本発明は、排水経路の途中に設けた濁度検出部で洗浄水の濁度検出をする食器洗い機において、洗浄槽内に多量の汚れが投入され、給水終了後、濁度検出部に汚れた水が到達した場合でも、正しい汚れ度合いを判定することができ、被洗浄物の汚れに応じた洗浄を適切に行うことができる食器洗い機を提供するものである。 The present invention is a dishwasher that detects turbidity of washing water in a turbidity detection unit provided in the middle of a drainage path, and a large amount of dirt is introduced into the washing tank, and after ending water supply, the turbidity detection unit becomes dirty. It is an object of the present invention to provide a dishwasher that can determine the correct degree of contamination even when water reaches and can appropriately perform cleaning according to the contamination of an object to be cleaned.
 本発明の食器洗い機は、被洗浄物を収容する洗浄槽と、洗浄槽内の被洗浄物を洗浄する洗浄部と、洗浄槽内に洗浄水を給水する給水装置と、洗浄槽から食器洗い機外へ洗浄水を排出する排水装置と、排水装置と連通させて設けた排水経路とを備える。また、排水経路に設けられ、排水経路内の洗浄水の濁度に関する情報を検出する濁度検出部と、濁度検出部で検出した洗浄水の濁度に関する情報に応じて、洗浄部の動作条件を変更して制御する制御部とを備える。制御部は、運転開始時に、水なしの状態、および、給水装置による給水後の水ありの状態のそれぞれの状態において、濁度検出部が検出した値を比較する。これにより、水ありの状態で濁度検出部が検出した値を、洗浄水の濁度に関する情報の基準値に採用するか否かを決定する。 The dishwasher according to the present invention includes a washing tank for storing an object to be washed, a washing unit for washing the object to be washed in the washing tank, a water supply device for supplying washing water into the washing tank, and the dishwasher from the washing tank. A drainage device for discharging washing water and a drainage path provided in communication with the drainage device. Also, a turbidity detection unit that is provided in the drainage path and detects information on the turbidity of the cleaning water in the drainage path, and the operation of the cleaning unit according to the information on the turbidity of the cleaning water detected by the turbidity detection unit And a control unit that changes and controls the conditions. A control part compares the value which the turbidity detection part detected in each state of the state without water at the time of a driving | operation start, and the state with water after water supply with a water supply apparatus. Thereby, it is determined whether or not to adopt the value detected by the turbidity detection unit in the presence of water as the reference value of the information regarding the turbidity of the washing water.
図1は、本発明の実施の形態における食器洗い機の断面構成を示す図である。FIG. 1 is a diagram showing a cross-sectional configuration of a dishwasher according to an embodiment of the present invention. 図2は、本発明の実施の形態に係る食器洗い機におけるポンプの断面構成を示す図である。FIG. 2 is a diagram showing a cross-sectional configuration of a pump in the dishwasher according to the embodiment of the present invention. 図3は、本発明の実施の形態における食器洗い機の濁度検出部の斜視図である。FIG. 3 is a perspective view of the turbidity detection unit of the dishwasher in the embodiment of the present invention. 図4は、本発明の実施の形態における食器洗い機の濁度検出部を凸部の側面から見た断面図である。FIG. 4 is a cross-sectional view of the turbidity detection part of the dishwasher according to the embodiment of the present invention as seen from the side of the convex part. 図5は、本発明の実施の形態における食器洗い機の濁度検出部を凸部の正面から見た断面図である。FIG. 5 is a cross-sectional view of the turbidity detection portion of the dishwasher according to the embodiment of the present invention as viewed from the front of the convex portion. 図6は、本発明の実施の形態における濁度検出の初期設定シーケンスを示すフローチャートである。FIG. 6 is a flowchart showing an initial setting sequence for turbidity detection according to the embodiment of the present invention.
 以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.
 図1は、本発明の実施の形態における食器洗い機50の断面構成を示す図である。 FIG. 1 is a diagram showing a cross-sectional configuration of a dishwasher 50 according to an embodiment of the present invention.
 食器洗い機本体1は、内部に洗浄槽2を有している。給水装置3が、洗浄槽2内に水または湯(洗浄水)を供給する。給水装置3は、給水量を制御するために、洗浄槽2に連通させて設けた水位センサ4によって、所定の水位に達すると動作を止めるように、制御部13によって制御されている。洗浄槽2の底部には、貯水部2aを有している。また、貯水部2aに連通し、モータによって駆動されるポンプ5が取り付けられている。また、食器洗い機50は、さらに、洗浄ノズル9、ヒータ10、食器かご11、排水経路12、濁度検出部14、鉛直部18および洗浄経路17を備えている。 The dishwasher body 1 has a washing tank 2 inside. A water supply device 3 supplies water or hot water (cleaning water) into the cleaning tank 2. In order to control the amount of water supply, the water supply device 3 is controlled by the control unit 13 so as to stop its operation when a predetermined water level is reached by a water level sensor 4 provided in communication with the cleaning tank 2. The bottom of the cleaning tank 2 has a water storage part 2a. Moreover, the pump 5 which is connected to the water storage part 2a and driven by a motor is attached. The dishwasher 50 further includes a washing nozzle 9, a heater 10, a dish basket 11, a drainage path 12, a turbidity detection unit 14, a vertical part 18, and a washing path 17.
 食器洗い機50のポンプ5について、その構成および動作を説明する。 The configuration and operation of the pump 5 of the dishwasher 50 will be described.
 図2は、本発明の実施の形態に係る食器洗い機50におけるポンプ5の断面構成を示す図である。 FIG. 2 is a diagram showing a cross-sectional configuration of the pump 5 in the dishwasher 50 according to the embodiment of the present invention.
 ポンプ5は、ポンプケーシング6、羽根車7および切換え弁8を有している。ポンプケーシング6には、貯水部2aの洗浄水を、洗浄ノズル9へ吐出する洗浄側パイプ6aと、貯水部2aの洗浄水を、排水経路12へ吐出する排水側パイプ6bとが配置されている。切換え弁8は、回転軸8a周りに回動し、排水側パイプ6bを開閉可能に構成されている。また、切換え弁8は、フラップ部8bを有しており、水流の方向によって、排水側パイプ6bを開閉することが可能である。 The pump 5 has a pump casing 6, an impeller 7, and a switching valve 8. The pump casing 6 is provided with a cleaning side pipe 6 a that discharges the cleaning water of the water storage unit 2 a to the cleaning nozzle 9 and a drain side pipe 6 b that discharges the cleaning water of the water storage unit 2 a to the drainage path 12. . The switching valve 8 is configured to rotate around the rotation shaft 8a so that the drain side pipe 6b can be opened and closed. Moreover, the switching valve 8 has the flap part 8b, and can open and close the drain side pipe 6b according to the direction of water flow.
 モータによって羽根車7が反時計回りに回転すると、洗浄水は洗浄側パイプ6aの方に流れ、ポンプ5は洗浄ポンプとして機能する。このとき、切換え弁8は洗浄水の流れによる圧力で、排水側パイプ6bの入り口の壁に押し付けられ、排水側が閉じられた状態となり、排水経路12側には洗浄水が流れ込まない。 When the impeller 7 rotates counterclockwise by the motor, the cleaning water flows toward the cleaning side pipe 6a, and the pump 5 functions as a cleaning pump. At this time, the switching valve 8 is pressed against the wall of the entrance of the drain side pipe 6b by pressure due to the flow of the wash water, the drain side is closed, and the wash water does not flow into the drain path 12 side.
 逆に、羽根車7が時計回りに回転すると、洗浄水は切換え弁8を開放するように圧力を加え、切換え弁8が開くとともに排水経路12側に洗浄水が流れる。この場合、ポンプ5は排水ポンプ(排水装置)として機能する。なお、モータが停止し、羽根車7が回転していない場合には、切換え弁8は排水側パイプ6bを閉じた状態とはならない。 Conversely, when the impeller 7 rotates clockwise, the washing water applies pressure so as to open the switching valve 8, and the switching valve 8 opens and the washing water flows to the drainage path 12 side. In this case, the pump 5 functions as a drainage pump (drainage device). When the motor is stopped and the impeller 7 is not rotating, the switching valve 8 does not close the drain side pipe 6b.
 このように、ポンプ5は、洗浄・排水兼用ポンプとして機能する。以降の説明においては、ポンプ5が洗浄ポンプとして機能している場合を、洗浄ポンプ5aと記載し、ポンプ5が排水ポンプとして機能している場合を、排水ポンプ(排水装置)5bと記載する。 Thus, the pump 5 functions as a cleaning / drainage combined use pump. In the following description, the case where the pump 5 functions as a cleaning pump is described as a cleaning pump 5a, and the case where the pump 5 functions as a drainage pump is described as a drainage pump (drainage device) 5b.
 食器洗い機50の洗浄工程においては、洗浄ポンプ5aにより洗浄水を食器洗い機本体1の内部で循環させる。洗浄槽2内に供給された洗浄水は、貯水部2aから洗浄ポンプ5aに吸い込まれ、洗浄ポンプ5aにより洗浄側パイプ6aから洗浄経路17を通り、洗浄槽2の内底部に設けられた洗浄ノズル9に供給される。洗浄ノズル9から噴射された洗浄水は、洗浄槽2内に収容された被洗浄物(食器等)を洗浄した後、再び貯水部2aに戻るという経路で循環する。洗浄ポンプ5aと洗浄ノズル9と洗浄経路17とで洗浄部を構成する。 In the washing process of the dishwasher 50, washing water is circulated inside the dishwasher body 1 by the washing pump 5a. The cleaning water supplied into the cleaning tank 2 is sucked into the cleaning pump 5a from the water storage section 2a, and passes through the cleaning path 17 from the cleaning side pipe 6a by the cleaning pump 5a, and is provided at the inner bottom of the cleaning tank 2 9 is supplied. The cleaning water sprayed from the cleaning nozzle 9 circulates along a route that returns to the water storage unit 2a again after cleaning the object to be cleaned (tableware or the like) accommodated in the cleaning tank 2. The cleaning pump 5a, the cleaning nozzle 9, and the cleaning path 17 constitute a cleaning unit.
 洗浄ノズル9と洗浄槽2の底部との間には、洗浄水加熱用のヒータ10を装備している。洗浄ノズル9の上方には、被洗浄物を整然と配置でき、洗浄水を効果的に被洗浄物に噴射できるように構成した食器かご11を配置し、効率的な洗浄を行っている。 A heater 10 for heating cleaning water is provided between the cleaning nozzle 9 and the bottom of the cleaning tank 2. Above the cleaning nozzle 9, a dish basket 11 is arranged so that an object to be cleaned can be arranged in an orderly manner and cleaning water can be effectively sprayed onto the object to be cleaned, thereby performing efficient cleaning.
 また、排水工程において、排水ポンプ5bは、排水側パイプ6bから排水経路12を通して洗浄水を機外に排出する。なお、制御部13が、給水装置3、ポンプ5、および、ヒータ10等の電装部品を駆動、制御している。 Also, in the drainage process, the drainage pump 5b discharges the wash water from the drainage side pipe 6b through the drainage path 12 to the outside of the machine. The control unit 13 drives and controls electrical components such as the water supply device 3, the pump 5, and the heater 10.
 排水ポンプ5bよりも機外側、すなわち排水が流れる下流側の排水経路12の途中には、排出される洗浄水が実質的に上方(鉛直方向)に向かって流れる鉛直部18が設けられ、鉛直部18の外側に、洗浄水の濁度を検出する濁度検出部14が配置されている。 A vertical portion 18 in which the wash water to be discharged flows substantially upward (vertical direction) is provided on the outer side of the drainage pump 5b, that is, in the middle of the downstream drainage passage 12 through which the drainage flows. A turbidity detection unit 14 that detects the turbidity of the washing water is disposed outside 18.
 ここで、濁度検出部14について、その構成および動作を説明する。 Here, the configuration and operation of the turbidity detection unit 14 will be described.
 図3は、本発明の実施の形態における食器洗い機50の濁度検出部14の斜視図であり、図4は、同濁度検出部14を凸部15の側面から見た断面図であり、図5は、同濁度検出部14を凸部15の正面から見た断面図である。 FIG. 3 is a perspective view of the turbidity detection unit 14 of the dishwasher 50 according to the embodiment of the present invention, and FIG. 4 is a cross-sectional view of the turbidity detection unit 14 viewed from the side of the convex portion 15. FIG. 5 is a cross-sectional view of the turbidity detection unit 14 as viewed from the front of the convex portion 15.
 排水経路12の途中の鉛直部18に、排水経路12から突出させた凸部15を設ける。凸部15の下面15aおよび上面15bの内面は、図4に示したように、それぞれ傾斜させてある。より具体的には、下面15aの内面は、下面15aの排水経路12に接続される側が低くなるように傾斜して形成され、上面15bの内面は、上面15bの排水経路12に接続される側が高くなるように傾斜して形成されている。言い換えれば、下面15aの内面は、排水経路12の下流側に行くほど外側に向けて、上面15bの内面は、排水経路12の下流側に行くほど内側に向けて、それぞれ傾斜している(図4参照)。また、両側の側面15cは実質的に鉛直方向に配置され、二面が対向している(図5参照)。 The convex part 15 protruded from the drainage path 12 is provided in the vertical part 18 in the middle of the drainage path 12. The inner surfaces of the lower surface 15a and the upper surface 15b of the convex portion 15 are respectively inclined as shown in FIG. More specifically, the inner surface of the lower surface 15a is formed so as to be inclined such that the side connected to the drainage path 12 of the lower surface 15a is lower, and the inner surface of the upper surface 15b is the side connected to the drainage path 12 of the upper surface 15b. Inclined so as to be higher. In other words, the inner surface of the lower surface 15a is inclined outward toward the downstream side of the drainage passage 12, and the inner surface of the upper surface 15b is inclined inward toward the downstream side of the drainage passage 12 (see FIG. 4). Further, the side surfaces 15c on both sides are substantially arranged in the vertical direction, and the two surfaces are opposed to each other (see FIG. 5).
 また、濁度検出部14は、凸部15を覆うように配置され、側面15cの外側に、発光部14aと受光部14bとを対向させて配置している(図3および図5を参照)。この際、発光部14aと受光部14bとの距離は、その能力に応じて適正な距離としている。凸部15の幅(両側の側面15c間の距離:W1)を、排水経路12の鉛直部18における幅(W2)よりも小さくして、排水経路12の幅に対して適正な距離を持った凸部15を設けている。これにより、濁度検出部14による濁度検出に必要な、適正な距離をとることが可能となる。 Moreover, the turbidity detection part 14 is arrange | positioned so that the convex part 15 may be covered, and the light emission part 14a and the light-receiving part 14b are arrange | positioned facing the outer side of the side surface 15c (refer FIG. 3 and FIG. 5). . At this time, the distance between the light emitting portion 14a and the light receiving portion 14b is set to an appropriate distance according to the ability. The width of the convex portion 15 (distance between the side surfaces 15c on both sides: W1) is made smaller than the width (W2) in the vertical portion 18 of the drainage path 12 to have an appropriate distance with respect to the width of the drainage path 12 A convex portion 15 is provided. Thereby, it is possible to take an appropriate distance necessary for turbidity detection by the turbidity detection unit 14.
 排水経路12は、洗浄水を機外へ排出するために必要な断面積を有する。また、濁度検出部14の発光部14aおよび受光部14bにも、その入出力の関係から必要な距離が存在する。しかしながら、濁度検出部14を、排水経路12全体の外側に設けようとした場合には、発光部14aと受光部14bとの必要距離と合わない場合がある。 The drainage channel 12 has a cross-sectional area necessary for discharging the wash water to the outside of the machine. Further, the light emitting unit 14a and the light receiving unit 14b of the turbidity detecting unit 14 also have a necessary distance from the input / output relationship. However, when the turbidity detection unit 14 is provided outside the entire drainage path 12, it may not match the required distance between the light emitting unit 14a and the light receiving unit 14b.
 本実施の形態では、凸部15の幅(W1)を排水経路12の幅(W2)よりも小さくして、排水経路12の幅よりも小さく、適正な距離を有する凸部15を設けている。これにより、濁度検出部14による濁度検出に必要な、適正距離を確保することが可能となる。よって、排水経路12の断面積を広く取ることによる排水能力の確保と、濁度検出部14の検出精度の確保とを両立させることができる。 In the present embodiment, the width (W1) of the convex portion 15 is made smaller than the width (W2) of the drainage passage 12, and the convex portion 15 that is smaller than the width of the drainage passage 12 and has an appropriate distance is provided. . Thereby, it is possible to secure an appropriate distance necessary for turbidity detection by the turbidity detection unit 14. Therefore, it is possible to satisfy both of ensuring the drainage capacity by widening the cross-sectional area of the drainage path 12 and ensuring the detection accuracy of the turbidity detection unit 14.
 また、凸部15の上下に形成された、上面15bおよび下面15aの内面を、適切な傾斜面とすることにより、排水時の洗浄水の流れにより、凸部15の内部に渦が発生することを防ぐことができる。さらに、給水や排水動作により洗浄水が流れてきたときに発生した泡は、上方へ移動する。また、排水の停止時に濁度検出を行うときには、比重の大きい異物は下に落ち、比重の小さいものは上方へ上がる。したがって、検出時において安定して精度の良い検出が可能となる。 Moreover, by making the inner surfaces of the upper surface 15b and the lower surface 15a formed above and below the convex portion 15 into appropriate inclined surfaces, vortices are generated inside the convex portion 15 due to the flow of cleaning water during drainage. Can be prevented. Furthermore, bubbles generated when cleaning water flows due to water supply or drainage operation move upward. Further, when turbidity detection is performed when drainage is stopped, a foreign substance having a large specific gravity falls downward, and a small foreign substance rises upward. Therefore, stable and accurate detection is possible at the time of detection.
 以上のように構成された食器洗い機50について、その動作および作用を説明する。 The operation and action of the dishwasher 50 configured as described above will be described.
 まず、洗浄工程において、給水装置3が開放されて給水が開始される。水位センサ4の検知に基づく制御により、所定の水位に達した場合に、給水装置3を閉じて給水を完了する。このとき、ポンプ5を駆動するモータは回転しておらず、切換え弁8は排水側パイプ6bを閉じていない状態である。よって、洗浄水は、ポンプ5の内部を通じて、洗浄槽2の貯水部2aに連通している排水経路12にも到達する。そして、濁度検出部14の位置の排水経路12および凸部15内にも洗浄水が満たされることになる。 First, in the cleaning process, the water supply device 3 is opened and water supply is started. When a predetermined water level is reached by the control based on the detection of the water level sensor 4, the water supply device 3 is closed to complete the water supply. At this time, the motor for driving the pump 5 is not rotating, and the switching valve 8 is in a state where the drain side pipe 6b is not closed. Therefore, the cleaning water reaches the drainage path 12 communicating with the water storage part 2 a of the cleaning tank 2 through the inside of the pump 5. Then, the flush water is also filled in the drainage path 12 and the convex portion 15 at the position of the turbidity detection unit 14.
 洗浄工程が開始されると、切換え弁8は、洗浄水の流れにより排水側が閉じられ、洗浄水は排水側に浸入しない。したがって、この状態では、初期の洗浄水が排水経路12に閉じ込められたままで、洗浄槽2内の洗浄水の汚れを検出することはできない。 When the cleaning process is started, the switching valve 8 is closed on the drain side by the flow of the cleaning water, and the cleaning water does not enter the drain side. Therefore, in this state, it is impossible to detect the contamination of the cleaning water in the cleaning tank 2 while the initial cleaning water is confined in the drainage path 12.
 洗浄工程が終了し、洗浄槽2内の洗浄水の汚れを検出する場合には、排水ポンプ5bを少しの時間動作させて、その後停止させる。これにより、洗浄槽2内の汚れた洗浄水を、濁度検出部14に対向する排水経路部分である、凸部15周辺に浸入させ、その洗浄水の濁度を測定することができる。このとき、濁度検出部14に対向する凸部15周辺には、すでに給水完了時からの初期の洗浄水が満たされている。よって、洗浄水の不連続な動きや乱れた動きがほとんどなく、安定した状態で濁度を検出することができる。 When the cleaning process is completed and the contamination of the cleaning water in the cleaning tank 2 is detected, the drain pump 5b is operated for a short time and then stopped. Thereby, the dirty cleaning water in the cleaning tank 2 is allowed to enter the vicinity of the convex portion 15, which is a drainage path portion facing the turbidity detection unit 14, and the turbidity of the cleaning water can be measured. At this time, the vicinity of the convex portion 15 facing the turbidity detection portion 14 is already filled with the initial washing water from the time when the water supply is completed. Therefore, there is almost no discontinuous movement or disturbed movement of the washing water, and turbidity can be detected in a stable state.
 そして、測定した濁度に応じて、制御部13は、例えばすすぎの回数を変更する等、洗浄ポンプ5a、ヒータ10、給水装置3、または、排水ポンプ5b等の動作条件を変更する。その後、すすぎ、乾燥工程等の工程を行い、運転を終了する。 And according to the measured turbidity, the control unit 13 changes the operating conditions of the cleaning pump 5a, the heater 10, the water supply device 3, or the drainage pump 5b, for example, by changing the number of times of rinsing. Thereafter, a process such as rinsing and drying is performed, and the operation is terminated.
 以下、洗浄水の濁度検出の方法、および濁度検出の基準値の初期設定の方法について、詳細に説明する。図6は、本発明の実施の形態における濁度検出の初期設定シーケンスを示すフローチャートである。 Hereinafter, a method for detecting the turbidity of washing water and a method for initial setting of a reference value for turbidity detection will be described in detail. FIG. 6 is a flowchart showing an initial setting sequence for turbidity detection according to the embodiment of the present invention.
 本実施の形態の食器洗い機50における濁度検出の方法の概要は、以下の通りである。 The outline of the turbidity detection method in the dishwasher 50 of the present embodiment is as follows.
 運転開始後の給水後、排水経路12の途中に設けた濁度検出部14に初期水が到達したときに、濁度検出部14によって汚れていない初期水の透過度(濁度)を検出し、その値を基準値とする。洗浄終了後、濁度検出部14により、洗浄終了後に排出される洗浄水の透過度(濁度)を検出して、基準値からの変化量に基づいて、排水がどのくらい汚れているか、つまり洗浄槽2内で洗浄していた食器の汚れ度合いを、数値化して判定する。そして、制御部13は、濁度検出部14で判定した汚れ度合いに応じた条件で、洗浄工程終了後のすすぎ、乾燥の各工程を実行する。 When the initial water reaches the turbidity detection unit 14 provided in the middle of the drainage channel 12 after water supply after the start of operation, the turbidity detection unit 14 detects the permeability (turbidity) of the initial water that is not contaminated. The value is used as a reference value. After the cleaning is completed, the turbidity detection unit 14 detects the permeability (turbidity) of the cleaning water discharged after the cleaning is completed, and based on the amount of change from the reference value, how dirty the drainage is, that is, cleaning. The degree of soiling of the tableware cleaned in the tank 2 is determined by quantification. And the control part 13 performs each process of the rinse after a washing | cleaning process and drying on the conditions according to the stain | pollution | contamination degree determined by the turbidity detection part 14. FIG.
 本実施の形態の食器洗い機50において、濁度検出部14が検出する透過度は、水あり状態の方が、水なし状態よりも高くなるという特性を有する。しかしながら、給水終了後、濁度検出部14の洗浄水が汚れている場合には、水あり状態であっても、水なし状態よりも透過度が低くなる。 In the dishwasher 50 of the present embodiment, the permeability detected by the turbidity detection unit 14 has a characteristic that the state with water is higher than the state without water. However, when the washing water of the turbidity detection unit 14 is dirty after the water supply is finished, the permeability is lower than that in the absence of water even in the presence of water.
 濁度検出の基準値となる、初期水の透過度を検出する際、洗浄槽2内に多量の汚れが投入されていた場合等には、給水により初期水が汚れて、給水終了後、濁度検出部に、汚れた水が到達する場合がある。この汚れた初期水の透過度を基準値とすると、洗浄終了後に排出される洗浄水の透過度を検出した際、基準値からの変化量は、初期水が汚れていない場合よりも小さくなり、正しい汚れ度合いを判定することが難しくなる。 When detecting the water permeability of the initial water, which is the reference value for turbidity detection, if a large amount of dirt is introduced into the washing tank 2, the initial water becomes dirty due to the water supply, and after the water supply ends, Dirty water may reach the degree detector. When the permeability of this dirty initial water is used as a reference value, the change from the reference value is smaller than when the initial water is not dirty when the permeability of the cleaning water discharged after cleaning is detected, It becomes difficult to determine the correct degree of dirt.
 この課題を解決するために、まず、食器洗い機50では、濁度検出部14を、発光部14aと受光部14bとを対向させて設けた光センサとする。 In order to solve this problem, first, in the dishwasher 50, the turbidity detection unit 14 is an optical sensor provided with the light emitting unit 14a and the light receiving unit 14b facing each other.
 そして、食器洗い機50は、図6に示すように、運転開始後(ステップS1)、排水前あるいは排水後(図6においては排水(ステップS2)後の場合を記載)の水なし状態で、発光部14aに所定の初期電圧値を供給し、排水経路12の途中に設けた濁度検出部14の受光部14bにより、第1の透過度の受光電圧T1を検出する(ステップS3)。 Then, as shown in FIG. 6, the dishwasher 50 emits light in the absence of water after starting operation (step S1), before draining or after draining (in FIG. 6, the case after draining (step S2) is described). A predetermined initial voltage value is supplied to the unit 14a, and the received light voltage T1 of the first transmittance is detected by the light receiving unit 14b of the turbidity detecting unit 14 provided in the middle of the drainage path 12 (step S3).
 次に、給水工程を行い(ステップS4)、その後の水あり状態で、発光部14aに同一電圧値を供給した状態で、第2の透過度の受光電圧T2を濁度検出部14の受光部14bにより検出する(ステップS5)。 Next, a water supply process is performed (step S4), and in the state where there is water thereafter, the same voltage value is supplied to the light emitting unit 14a, and the received light voltage T2 having the second transmittance is received by the light receiving unit of the turbidity detecting unit 14. 14b (step S5).
 通常、給水後、初期水が汚れていない場合には、受光部14bの電圧値は、水ありの方が、水なしよりも大きくなる。洗浄槽2内に汚れが投入されていて、給水により初期水が汚れた場合には、水あり状態であっても、汚れ度合いが大きくなり、受光部14bの電圧値は、水なし状態の電圧値よりも小さくなる。そこで、制御部13はT1とT2とを比較し(ステップS6)、T2>T1ならば、初期水が汚れていないと判定して第2の透過度(受光電圧T2)を基準値に採用する(ステップS7)。 Usually, after the water supply, when the initial water is not contaminated, the voltage value of the light receiving unit 14b is larger with water than without water. When the cleaning tank 2 is contaminated and the initial water is contaminated by water supply, the degree of contamination increases even in the presence of water, and the voltage value of the light receiving unit 14b is the voltage in the absence of water. Smaller than the value. Therefore, the control unit 13 compares T1 and T2 (step S6). If T2> T1, it is determined that the initial water is not contaminated, and the second transmittance (light reception voltage T2) is adopted as the reference value. (Step S7).
 そして、濁度検出部14の受光部14bの受光電圧T2が所定の基準電圧値となるように、発光部14aへ供給する電圧を調整する(ステップS8)。なお、この基準電圧値は、本実施の形態においては、凸部15の側面15cの透過度や発光部14aおよび受光部14bの個体差や経年変化による影響を補正するために、洗浄水の濁度に関する情報の基準値(受光電圧の基準値)として設定しているものであり、必ずしもこの方法に限定するものではない。また、ステップS7までを実行するものとしてもかまわない。 Then, the voltage supplied to the light emitting unit 14a is adjusted so that the light receiving voltage T2 of the light receiving unit 14b of the turbidity detecting unit 14 becomes a predetermined reference voltage value (step S8). In the present embodiment, the reference voltage value is used to correct the turbidity of the washing water in order to correct the transmissivity of the side surface 15c of the convex portion 15, the individual difference between the light emitting portion 14a and the light receiving portion 14b, and the influence of aging. This is set as a reference value (reference value of received light voltage) for the degree of information, and is not necessarily limited to this method. In addition, the process up to step S7 may be executed.
 一方、制御部13は、T2≦T1ならば、前述のように、第2の透過度(受光電圧T2)を基準値として採用せずに、前回運転時の基準値を使用するように制御する(ステップS9)。すなわち、制御部13は、前回運転時に発光部14aへ供給していた電圧値を使用する等の制御を行う。 On the other hand, if T2 ≦ T1, the control unit 13 controls to use the reference value at the previous operation without using the second transmittance (light reception voltage T2) as the reference value as described above. (Step S9). That is, the control unit 13 performs control such as using the voltage value supplied to the light emitting unit 14a during the previous operation.
 以上のような方法で、濁度検出の初期設定を行う。これにより、洗浄槽2内に多量の汚れが投入されていて、給水により初期水が汚れ、給水後、濁度検出部14に汚れた水が到達した場合等であっても、汚れた水の透過度を基準値に調整する事を防止でき、正しい汚れ度合いを判定できる。 初期 Perform initial settings for turbidity detection using the method described above. As a result, even if a large amount of dirt is put in the cleaning tank 2 and the initial water becomes dirty due to the water supply, and the dirty water reaches the turbidity detection unit 14 after the water supply, the dirty water It is possible to prevent the transmittance from being adjusted to the reference value, and to determine the correct degree of dirt.
 なお、水なし状態での透過度を検出するタイミング(ステップS3のタイミング)としては、運転開始時の、排水前および排水後のいずれでもよい。運転開始時の排水前は、濁度検出部14には水が存在せず、水なし状態である。一方、運転開始時の排水後も、排水経路12を残水が通過した後は、濁度検出部14は水なし状態となる。よって、運転開始時の排水前または排水後に検出することにより、いずれの場合にも、水なし状態での透過度が検出できる。 In addition, as a timing (timing of step S3) which detects the transmittance | permeability in the state without water, any before the drainage at the time of an operation start and after drainage may be sufficient. Before draining at the start of operation, water is not present in the turbidity detector 14 and there is no water. On the other hand, even after draining at the start of operation, after the remaining water passes through the drainage path 12, the turbidity detection unit 14 is in a waterless state. Therefore, by detecting before draining or after draining at the start of operation, the transmittance in the absence of water can be detected in any case.
 なお、本実施の形態においては、ポンプ5を、モータの回転方向を変えることにより、洗浄ポンプ5aおよび排水ポンプ5bの二種類のポンプとして機能する洗浄・排水兼用ポンプであるとして説明した。しかしながら、本発明はこの例に限定されない。例えば、切換え弁8を駆動装置により動作して、洗浄側パイプ6aまたは排水側パイプ6bへと洗浄水の流れを切換え、一回転方向で、二種類のポンプとして機能する構成としてもよい。また、本実施の形態では、切換え弁8のついたポンプ5について説明したが、切換え弁8のないタイプのポンプ5や、さらに、洗浄ポンプ5aおよび排水ポンプ5bとして、それぞれ別々の専用タイプのものを用いてもよい。 In the present embodiment, the pump 5 is described as a cleaning / drainage pump that functions as two types of pumps, the cleaning pump 5a and the drainage pump 5b, by changing the rotation direction of the motor. However, the present invention is not limited to this example. For example, the switching valve 8 may be operated by a driving device to switch the flow of cleaning water to the cleaning side pipe 6a or the drainage side pipe 6b, and function as two types of pumps in one rotation direction. Further, in the present embodiment, the pump 5 with the switching valve 8 has been described. However, the pump 5 without the switching valve 8, and the separate dedicated types as the cleaning pump 5a and the drainage pump 5b, respectively. May be used.
 以上述べたように、本実施の形態の食器洗い機50によれば、濁度検出の初期設定シーケンスにおいて、基準値となる給水後の初期水の透過度を検出する際、運転開始時、排水経路12の途中に設けた濁度検出部14に、水なし状態で、透過度を検出させる。そして、水なし状態での透過度と、給水後の水あり状態での透過度とを比較し、水あり状態の透過度の値が、水なし状態の透過度の値よりも大きければ、その値を基準値とする。一方、水あり状態の透過度の値が、水なし状態の透過度の値以下の場合には、その値を基準値に調整せず、前回運転時の基準値を使用する。 As described above, according to the dishwasher 50 of the present embodiment, in the initial setting sequence of turbidity detection, when detecting the permeability of the initial water after water supply serving as the reference value, the drainage path at the start of operation. The turbidity detection unit 14 provided in the middle of No. 12 is caused to detect the transmittance in the absence of water. Then, the permeability in the absence of water and the permeability in the presence of water after water supply are compared. If the permeability in the presence of water is greater than the permeability in the absence of water, Use the value as the reference value. On the other hand, when the value of the permeability in the presence of water is equal to or less than the value of the permeability in the absence of water, the value is not adjusted to the reference value, and the reference value from the previous operation is used.
 これにより、洗浄槽2内に多量の汚れが投入されて、給水により初期水が汚れ、給水終了後、濁度検出部14に汚れた水が到達した場合等であっても、この汚れた水の透過度を基準値とする事を防止できる。したがって、正しい汚れ度合いを検出する事ができ、被洗浄物の汚れを的確に検出できるため、被洗浄物の汚れに応じた洗浄を適切に行うことができる。 As a result, a large amount of dirt is introduced into the washing tank 2 and the initial water is contaminated by the water supply. Even when the dirty water reaches the turbidity detection unit 14 after the water supply ends, the dirty water It is possible to prevent the transmittance of the reference value from being used as a reference value. Therefore, the correct degree of contamination can be detected, and the contamination of the object to be cleaned can be accurately detected, so that cleaning according to the contamination of the object to be cleaned can be performed appropriately.
 以上述べたように、本発明によれば、排水経路の途中に設けた濁度検出部で洗浄水の濁度検出をする食器洗い機において、洗浄槽内に多量の汚れが投入され、給水終了後、濁度検出部に汚れた水が到達した場合でも、正しい汚れ度合いを判定することができ、被洗浄物の汚れに応じた洗浄を適切に行うことができるという格別な効果を有する。よって、本発明は、食器等の被洗浄物を洗浄する食器洗い機等として有用である。 As described above, according to the present invention, in the dishwasher that detects the turbidity of the washing water by the turbidity detection unit provided in the middle of the drainage path, a large amount of dirt is introduced into the washing tank, and after the water supply is completed. Even when dirty water arrives at the turbidity detection unit, it is possible to determine the correct degree of contamination, and it is possible to perform cleaning according to the contamination of the object to be cleaned appropriately. Therefore, this invention is useful as a dishwasher etc. which wash | cleans to-be-washed objects, such as tableware.
 1  食器洗い機本体
 2  洗浄槽
 2a  貯水部
 3  給水装置
 4  水位センサ
 5  ポンプ
 5a  洗浄ポンプ
 5b  排水ポンプ
 6  ポンプケーシング
 6a  洗浄側パイプ
 6b  排水側パイプ
 7  羽根車
 8  切換え弁
 8a  フラップ部
 8b  回動軸
 9  洗浄ノズル
 10  ヒータ
 11  食器かご
 12  排水経路
 13  制御部
 14  濁度検出部
 14a  発光部
 14b  受光部
 15  凸部
 15a  下面
 15b  上面
 15c  側面
 17  洗浄経路
 18  鉛直部
 50  食器洗い機
DESCRIPTION OF SYMBOLS 1 Dishwasher main body 2 Washing tank 2a Water storage part 3 Water supply apparatus 4 Water level sensor 5 Pump 5a Washing pump 5b Drain pump 6 Pump casing 6a Washing side pipe 6b Draining side pipe 7 Impeller 8 Switching valve 8a Flap part 8b Rotating shaft 9 Washing Nozzle 10 Heater 11 Tableware basket 12 Drainage path 13 Control part 14 Turbidity detection part 14a Light emission part 14b Light reception part 15 Convex part 15a Lower surface 15b Upper surface 15c Side surface 17 Cleaning path 18 Vertical part 50 Dishwasher

Claims (2)

  1. 被洗浄物を洗浄する食器洗い機であって、
    前記被洗浄物を収容する洗浄槽と、
    前記洗浄槽内の前記被洗浄物を洗浄する洗浄部と、
    前記洗浄槽内に洗浄水を給水する給水装置と、
    前記洗浄槽から前記食器洗い機外へ前記洗浄水を排出する排水装置と、
    前記排水装置と連通させて設けた排水経路と、
    前記排水経路に設けられ、前記排水経路内の前記洗浄水の濁度に関する情報を検出する濁度検出部と、
    前記濁度検出部で検出した前記洗浄水の前記濁度に関する情報に応じて、前記洗浄部の動作条件を変更して制御する制御部とを備え、
    前記制御部は、運転開始時に、水なしの状態、および、前記給水装置による給水後の水ありの状態のそれぞれの状態において、前記濁度検出部が検出した値を比較することにより、前記水ありの状態で前記濁度検出部が検出した値を、前記洗浄水の濁度に関する情報の基準値に採用するか否かを決定する
    食器洗い機。
    A dishwasher for washing an object to be cleaned,
    A cleaning tank for storing the object to be cleaned;
    A cleaning section for cleaning the object to be cleaned in the cleaning tank;
    A water supply device for supplying cleaning water into the cleaning tank;
    A drainage device for discharging the washing water from the washing tank to the outside of the dishwasher;
    A drainage path provided in communication with the drainage device;
    A turbidity detection unit that is provided in the drainage path and detects information on the turbidity of the wash water in the drainage path;
    In accordance with information on the turbidity of the washing water detected by the turbidity detection unit, a control unit that changes and controls the operating conditions of the washing unit,
    The control unit compares the values detected by the turbidity detection unit at the start of operation with each of a state without water and a state with water after water supply by the water supply device. A dishwasher that determines whether or not to adopt a value detected by the turbidity detection unit in a certain state as a reference value of information relating to the turbidity of the washing water.
  2. 前記濁度検出部は、発光部と受光部とを有する光センサであり、
    前記制御部は、
    前記受光部が運転開始時に検出した前記水なしの状態の濁度検出値を示す受光電圧よりも、前記受光部が給水後に検出した前記水ありの状態の濁度検出値を示す受光電圧の方が高い場合、前記水ありの状態の濁度検出値を示す受光電圧が所定の基準電圧値になるように、前記発光部への供給電圧を調整する
    請求項1記載の食器洗い機。
    The turbidity detection unit is an optical sensor having a light emitting unit and a light receiving unit,
    The controller is
    The light reception voltage indicating the turbidity detection value in the water-containing state detected by the light-receiving unit after water supply is more than the light reception voltage indicating the turbidity detection value in the water-free state detected by the light-receiving unit at the start of operation. 2. The dishwasher according to claim 1, wherein the supply voltage to the light emitting unit is adjusted so that a light reception voltage indicating a turbidity detection value in a state with water becomes a predetermined reference voltage value when the water is high.
PCT/JP2011/004088 2010-07-29 2011-07-20 Dishwasher WO2012014408A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201180037333.6A CN103037748B (en) 2010-07-29 2011-07-20 Dishwasher
EP11812010.4A EP2599423A1 (en) 2010-07-29 2011-07-20 Dishwasher
KR1020137002262A KR101434120B1 (en) 2010-07-29 2011-07-20 Dishwasher

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010170007A JP5257419B2 (en) 2010-07-29 2010-07-29 dishwasher
JP2010-170007 2010-07-29

Publications (1)

Publication Number Publication Date
WO2012014408A1 true WO2012014408A1 (en) 2012-02-02

Family

ID=45529642

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/004088 WO2012014408A1 (en) 2010-07-29 2011-07-20 Dishwasher

Country Status (6)

Country Link
EP (1) EP2599423A1 (en)
JP (1) JP5257419B2 (en)
KR (1) KR101434120B1 (en)
CN (1) CN103037748B (en)
TW (1) TWI454240B (en)
WO (1) WO2012014408A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110226906A (en) * 2019-06-28 2019-09-13 华帝股份有限公司 Turbidity detection method and detection system for dish washing machine
CN111973122A (en) * 2019-05-21 2020-11-24 青岛海尔洗衣机有限公司 Dish washer drainage detection method and drainage detection device thereof

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105455757A (en) * 2014-09-01 2016-04-06 青岛海尔洗碗机有限公司 Turbidity detection system with calibration function, detection method and dish washing machine
CN104485923B (en) * 2014-11-03 2017-09-15 佛山市顺德区美的洗涤电器制造有限公司 A kind of dish-washing machine and turbidity transducer adjustment controlling means and device
CN104921683B (en) * 2015-06-25 2017-09-15 佛山市顺德区美的洗涤电器制造有限公司 Dish-washing machine and dish washer control method and device based on water level detecting
CN117761269A (en) * 2019-12-02 2024-03-26 上海明胜品智人工智能科技有限公司 Water quality detection method and device, storage medium and electronic device
CN114164609A (en) * 2021-12-30 2022-03-11 Tcl家用电器(合肥)有限公司 Control method of washing equipment, storage medium and washing equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04319329A (en) 1991-04-19 1992-11-10 Mitsubishi Electric Corp Drainage turbidity detecting device
JPH07213473A (en) * 1994-01-31 1995-08-15 Sanyo Electric Co Ltd Dish washer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4653294A (en) * 1984-12-28 1987-03-31 Sharp Kabushiki Kaisha Washing machine
JPH04279136A (en) * 1991-03-06 1992-10-05 Mitsubishi Electric Corp Dish washer
US7371288B2 (en) * 2003-07-03 2008-05-13 Lg Electronics Inc. Dishwasher and method for controlling the same
CN1682636A (en) * 2004-04-12 2005-10-19 乐金电子(天津)电器有限公司 Informing method for turbidity of dish washing machine
CN1714733A (en) * 2004-06-14 2006-01-04 乐金电子(天津)电器有限公司 Tableware cleaner and its process control method
KR20080051369A (en) * 2006-12-05 2008-06-11 삼성전자주식회사 Apparatus for controlling washing of a dish washing machine and method thereof
KR101003418B1 (en) * 2007-10-22 2010-12-23 엘지전자 주식회사 Dish washer and controlling method thereof
KR20100037456A (en) * 2008-10-01 2010-04-09 엘지전자 주식회사 Control method of washing machine
IT1392420B1 (en) * 2008-12-22 2012-03-02 Indesit Co Spa DISHWASHER.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04319329A (en) 1991-04-19 1992-11-10 Mitsubishi Electric Corp Drainage turbidity detecting device
JPH07213473A (en) * 1994-01-31 1995-08-15 Sanyo Electric Co Ltd Dish washer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2599423A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111973122A (en) * 2019-05-21 2020-11-24 青岛海尔洗衣机有限公司 Dish washer drainage detection method and drainage detection device thereof
CN110226906A (en) * 2019-06-28 2019-09-13 华帝股份有限公司 Turbidity detection method and detection system for dish washing machine

Also Published As

Publication number Publication date
JP2012029748A (en) 2012-02-16
TW201208630A (en) 2012-03-01
TWI454240B (en) 2014-10-01
KR20130033419A (en) 2013-04-03
EP2599423A4 (en) 2013-06-05
KR101434120B1 (en) 2014-09-22
EP2599423A1 (en) 2013-06-05
CN103037748A (en) 2013-04-10
CN103037748B (en) 2015-03-04
JP5257419B2 (en) 2013-08-07

Similar Documents

Publication Publication Date Title
WO2012014408A1 (en) Dishwasher
EP1929919A2 (en) Washing control apparatus and method of dish washing machine
JP2007151649A (en) Dishwasher
EA017259B1 (en) Method for eliminating foam in a drum washing machine and drum washing machine suitable therefor
WO2011161852A1 (en) Dishwasher
KR20100037456A (en) Control method of washing machine
CN108430298A (en) Whether judgement phase between the utensil outage for washing and rinsing article is added to processing water in the catch basin to utensil
KR101460713B1 (en) Dish washer and the method of the same
JP5157588B2 (en) dishwasher
KR101504129B1 (en) Method of controlling washing machine
JP5257392B2 (en) dishwasher
JP5278355B2 (en) dishwasher
JP2012125495A (en) Dishwasher
JP5785962B2 (en) Dishwasher
KR101053572B1 (en) Dishwasher and stroke control
US10829885B2 (en) Drain pump assembly for a washing machine appliance and methods of operating the same
JP2010194029A (en) Dishwasher
JP2006314501A (en) Dishwasher
KR20210099912A (en) Dish washer and control method for dish washer
JP5263083B2 (en) dishwasher
CN114947675A (en) Water-saving control method for dish-washing machine and dish-washing machine
JP2009273754A (en) Dishwasher
JP2010110343A (en) Dishwasher
JP2011045620A5 (en)
JP2010187963A (en) Dishwasher

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201180037333.6

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11812010

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2011812010

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 20137002262

Country of ref document: KR

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE