US3836001A - Pump with self-cleaning lint filter - Google Patents

Pump with self-cleaning lint filter Download PDF

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Publication number
US3836001A
US3836001A US00273257A US27325772A US3836001A US 3836001 A US3836001 A US 3836001A US 00273257 A US00273257 A US 00273257A US 27325772 A US27325772 A US 27325772A US 3836001 A US3836001 A US 3836001A
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US
United States
Prior art keywords
pump
chamber
fluid
impeller
outlet means
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US00273257A
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English (en)
Inventor
R Heldreth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US00273257A priority Critical patent/US3836001A/en
Priority to CA175,897A priority patent/CA995916A/en
Priority to AU57913/73A priority patent/AU474193B2/en
Priority to AR24909273A priority patent/AR197728A1/es
Priority to ES417007A priority patent/ES417007A1/es
Priority to BR533473A priority patent/BR7305334D0/pt
Priority to JP48080534A priority patent/JPS4944564A/ja
Priority to US05/470,497 priority patent/US3949578A/en
Application granted granted Critical
Publication of US3836001A publication Critical patent/US3836001A/en
Priority to ES442562A priority patent/ES442562A1/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/26—Filters with built-in pumps filters provided with a pump mounted in or on the casing
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/085—Arrangements or adaptations of pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/42—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to filters or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y10S415/911—Pump having reversible runner rotation and separate outlets for opposing directions of rotation

Definitions

  • the invention provides a bi-directional single-impeller centrifugal pump having a filter screen enclosed within the pump housing and interposed, in the pump chamber, between the single pump inlet and one of two outlets defined in the housing for filtering the fluid pumped through the one outlet inresponse to the impeller rotating in one direction.
  • the impeller is reversed to pump the fluid through the other outlet, the particles of lint etc., retained within the pump chamber by the filter screen are then free to exit the pump as flushed therefrom by the fluid being pumped through the other outlet.
  • This invention relates to a centrifugal pump having a pumping chamber defined by a casing providing one inlet and two outlets with the pumped fluid being directed through either one or the other of the outlets depending upon the direction of rotation of the pump impeller. More particularly, the present invention is directed to a pump of the above nature including a filter interposed within the pumping chamber between the inlet and one of the outlets for filtering water discharged through that one outlet, with the filter being cleaned by a flushing action when the impeller is reversed to pump the water through the other outlet.
  • the pump of the present invention is primarily utilized in the environment of laundry apparatus, such as an automatic washing machine, the prior art associated with this environment will be discussed.
  • a self-cleaning filtering mechanism Interposed between the pump and the valve in the circulating line is a self-cleaning filtering mechanism which is placed in a filtering position in this line by automatic control means.
  • the control means maintains the filter in the path of the fluid; however, when the timer control has advanced through the wash portion of the cycle to a drain and pump-out portion, the filtering means will automatically move to another position whereupon it is subjected to a flushing action by the draining fluid and thereby cleaned.
  • the most prevalent type of pumping and filtering means comprises a reversible centrifugal pump which pumps to either a recirculating line or a drain line depending upon the direction of rotation of the impeller, with the recirculating line discharging above the normal water level in the clothes containing tub so that a manually accessible filter could be interposed between the recirculating line and the water.
  • This structure eliminated the expensive valve and valve control means and also permitted the structure defining the filtering mechanism to serve as a receptacle for washing additives which were than added to the wash water by the action of the recirculating water as it passed through the filtering structure.
  • the invention discloses a bi-directional single impeller centrifugal pump having a filter screen permanently disposed within the pump housing in position to filter the water flowing through the outlet connected with the recirculation line and flushed by the water flowing to the outlet associated with the drain line so that the lint particles trapped by the filter within the pump housing are subsequently carried to drain whenever the pump is placed in that mode of operation.
  • Such pump and filter mechanism in addition to providing a selfcleaning filter, eliminates the necessity for valves and valve control mechanisms to determine the direction of the pumped fluid and further permits the option of directing the recirculating line to discharge into a washing machine below the normal water level within the machine thereby eliminating splashing and sudsing.
  • FIG. 1 is a cross-sectional elevation view of the pump of the present invention
  • FIG. 2 is a plan view of the lower housing member including the impeller and filtering screen
  • FIG. 3 is an elevation view of the pump in a washing machine.
  • the pump 10 has a housing 12 generally formed by fastening together two separate components, namely a bottom member 14 and a top member 16. Each member is preferably molded from a plastic such as polypropylene.
  • the bottom member 14 includes a generally planar bottom wall 18 and an upstanding peripheral side wall 20 with the juncture between the side wall and the bottom wall radiused so as to provide a generally smooth contour.
  • the side wall 20 terminates in a radially outwardly projecting flange 22 having apertures 24 therein through which connecting bolts 26 are received.
  • the bottom wall 18 also centrally defines an aperture 28 having a stepped wall configuration so as to properly receive a seal 30 through which the rotating shaft 32 of a reversible motor 34 projects into the pump housing 12.
  • flange 22 has a stepped configuration such as at 36 for receiving an annular O-ring 38 generally around the inner periphery of flange 22.
  • the top member 16 includes a generally planar top wall 40 in opposed facing relation with bottom wall 18, with the outermost periphery of top wall 40 radiused as at 42 to provide a generally smooth contoured transition between the horizontal top wall and the vertical side wall 20 of the bottom member 14.
  • the radially outermost portion of the top member 16 defines a flange 44 in opposed facing relation to flange 22 of the bottom member and has apertures 46 for alignment with apertures 28 of the bottom member through which the mounting bolts 26 are received. It is seen that in the assembled position shown in FIG. 1, the face-to-face engagement of the cooperating flange members compresses the O-ring 38 to provide a generaly water-tight seal around the periphery of the housing 12.
  • top wall 40 defines a generally cylindrical chamber defined by an upstanding generally vertical wall 48 covered by a contoured dome member 50 and provides a configuration for the housing to internally accommodate structure attaching the impeller to the drive shaft 32 of the motor 34 as will be subsequently described.
  • the vertical wall 48 defines an opening 52 therein which is bounded by an outwardly projecting nipple member 54 providing an inlet to the pumping chamber 56 which can generally be defined as the internal space formed by the opposing top wall 14 and bottom wall 18 and peripheral side wall 20.
  • An impeller 58 is disposed within the housing 12 in driving engagement with shaft 32 of a reversible motor 34.
  • the impeller 58 includes a central hub portion 60 having a sleeve member 62 which telescopically receives the shaft 32 therein.
  • the upper end of the sleeve contains an aperture in alignment with a threaded aperture in the shaft for receiving a bolt member 66.
  • Sealing means such as a top disk 69 and an O-ring 70 are interposed between the headed bolt 66 and the sleeve to provide a sealing engagement when the bolt is tightened to secure the impeller on shaft 32.
  • the lower portion of the hub 60 has a generally truncated conical form to conform to the contour of the lower bottom wall 18 and seal 30 and itself encloses a mating sealing means 72 in facing engagement with the seal 30 of the bottom member 14.
  • the impeller 58 extends radially outwardly from the hub member forming a generally planar bottom wall 74, the bottom face of which is in close facing relationship with the bottom wall 18 of the bottom member 14.
  • the upper face of the impellers bottom wall 74 supports a plurality of impeller blades 76 which have an arcuate configuration (see FIG. 2) to provide a pumping capability in either direction of rotation of the impeller; however, with the pumping capacity of the blade in one direction being substantially more efficient than the pumping capacity of the impeller blade in the opposite direction.
  • the side wall 20 of the bottom member 14 defines outlet apertures 78 and 80 which are bounded by integrally molded outwardly extending nipple portions 82 and 84 respectively.
  • Aperture 78 is generally the larger of the two outlets and its associated nipple portion 82 extends generally tangentially from the side wall 20.
  • a short projection or dam means 86 extend inwardly from the side wall 20 generally adjacent the aperture 78 on the side opposite the tangential wall of the nipple portion 82 .and in parallel facing relation thereto.
  • Outlet aperture 80 and its associated nipple portion 84 extend generally parallel to outlet aperture 78 and nipple 82 however in a non-tangential position with respect to the side wall 20.
  • Aperture 80 is also associated with a dam member 88 extending inwardly from the side wall 20 on the side of the aperture closest to the dam 86 associated with outlet aperture 78 so that the two described dam members are interposed within the pumping chamber between the two outlets 78 and 80.
  • the dam members extend from the bottom wall upwardly to a height so as to abutt the top wall 40, and thus are notched as at 86a and 88a so as to permit them to receive the top wall radius 42.
  • the pump 10 of the present invention further includes filter means 90 disposed within the pump chamber 56 to generally partition the pump chamber into two annular chambers 92 and 94 as separated by the filter means 90.
  • the filter means 90 comprises a generally fine mesh screen member 96, preferably molded of plastic, having the general configuration of an arcuate strip of constant height sufficient to extend from the bottom wall 18 to the top wall 40 and properly positioned within the pumping chamber by being received within an arcuate notch 98 formed in the bottom wall and a similar opposing arcuate notch 100 formed in the top wall.
  • the screen is positioned immediately in front of outlet aperture 80 with one end abutting darn member 88 which contains a notch 102 for properly seating the filter in this position.
  • the opposite end of the screen member is outwardly formed as at 104 so as to extend toward the side wall 20 and it likewise is properly seated in position by being received within a notch 106 formed therein.
  • fluid entering the inlet 52 is discharged throughoutlet aperture 78 at a relatively large volume whereas, when the impeller is reversed so as to be rotated in the clockwise direction the pumped fluid is discharged from the pumping chamber 56 through outlet aperture 80 at a substantially reduced volume.
  • the inlet opening is connected to the outer tub 108 of an automatic washing machine 110 through an appropriate hose 112 with the outlet aperture 78 and nipple 82 connected to a drain hose 114 and outlet aperture 80 and nipple 84 connected to a recirculating line 116.
  • the impeller 58 is rotated in a clockwise direction so as to continuously recirculate the water.
  • the lint containing wash water enters the pumping chamber through the inlet opening 52 and in flowing through the filter 90 so as to be discharged through the recirculating aperture 80 the lint is retained on the screen member 96 or in the chamber 92 formed between the impeller and the screen member 96.
  • the impeller When the impeller is reversed at the end of the agitation cycle to pump the wash water to drain, the lint collected within chamber 92 is flushed by the incoming water so as to exit chamber 92 through the drain outlet aperture 78 thereby cleaning all the collected lint from the screen 96 and the chamber 92.
  • the screen member 96 extends annularly approximately two-thirds of the way around the pump chamber, thereby providing more than sufficient cross-sectional area to accommodate the relatively low volumetric flow rate discharging from the recirculating outlet 80 without causing any substantial velocity gradient across the filtering member that might accompany a filtering area of reduced size.
  • an oversized screen or filtering member such as disclosed does not effect the pumping characteristics of this pump, it is better to provide a large filtering area, such as one having the length described so that even when exposed to extreme lint producing washing conditions it will permit flow.
  • the choice of an oversized screen area is not meant to imply that a filter of lesser area will not operate satisfactorily under most conditions; however, for the purpose of the present pump, in that the filter is generally inaccessible once the pump has been mounted on the machine, it was felt safer to oversize than undersize the area of the filter.
  • a pump of the above construction having a filter within the body of the pump permits the option of directing the recirculating filtered water to re-enter the tub either above the water level to be used to flush wash additives from a dispenser as is presently well known in the art or below the water level (shown in phantom) to eliminate the aeration of the water and its attendant sudsing.
  • a reversible centrifugal pump comprising a housing providing a pump chamber bounded by the intrnal wall structure of the housing and including a top wall defining inlet means for receiving fluid to be pumped, a peripheral side wall defining first and second outlet means for directing the discharge of the pumped fluid and a bottom wall; a rotatable impeller enclosed within said chamber and coupled to drive means for rotation in either direction with said fluid being received for discharge at said first outlet means when said impeller is rotated in one direction and at said second outlet means when said impeller is rotated in the opposite direction; and means for filtering the fluid received at said first outlet means comprising a strip of foraminous material stationarily mounted within said pump chamber and defining a peripheral edge contiguous with said internal wall structure, and disposed between said inlet means and said first outlet means and between said first outlet means and said second outlet means so that said inlet means and said second outlet means are in flow communication through said chamber free of said filtering means and said inlet means and said first outlet means are in flow communication only through said
  • indexing means includes notches in said wall structure for receiving said peripheral edge of said foraminous strip.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
US00273257A 1972-07-19 1972-07-19 Pump with self-cleaning lint filter Expired - Lifetime US3836001A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US00273257A US3836001A (en) 1972-07-19 1972-07-19 Pump with self-cleaning lint filter
CA175,897A CA995916A (en) 1972-07-19 1973-07-06 Pump with self-cleaning lint filter
AU57913/73A AU474193B2 (en) 1972-07-19 1973-07-10 Improvements in or relating to pump with self-cleaning lint filter
AR24909273A AR197728A1 (es) 1972-07-19 1973-07-13 Bomba centrifuga reversible
ES417007A ES417007A1 (es) 1972-07-19 1973-07-17 Una disposicion de bomba centrifuga reversible.
BR533473A BR7305334D0 (pt) 1972-07-19 1973-07-17 Bomba centrifuga reversivel
JP48080534A JPS4944564A (cs) 1972-07-19 1973-07-19
US05/470,497 US3949578A (en) 1972-07-19 1974-05-16 Pump with self-cleaning lint filter
ES442562A ES442562A1 (es) 1972-07-19 1975-11-12 Una maquina lavadora automatica.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00273257A US3836001A (en) 1972-07-19 1972-07-19 Pump with self-cleaning lint filter
US05/470,497 US3949578A (en) 1972-07-19 1974-05-16 Pump with self-cleaning lint filter

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/470,497 Division US3949578A (en) 1972-07-19 1974-05-16 Pump with self-cleaning lint filter

Publications (1)

Publication Number Publication Date
US3836001A true US3836001A (en) 1974-09-17

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US00273257A Expired - Lifetime US3836001A (en) 1972-07-19 1972-07-19 Pump with self-cleaning lint filter
US05/470,497 Expired - Lifetime US3949578A (en) 1972-07-19 1974-05-16 Pump with self-cleaning lint filter

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Application Number Title Priority Date Filing Date
US05/470,497 Expired - Lifetime US3949578A (en) 1972-07-19 1974-05-16 Pump with self-cleaning lint filter

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US (2) US3836001A (cs)
JP (1) JPS4944564A (cs)
AU (1) AU474193B2 (cs)
CA (1) CA995916A (cs)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4652368A (en) * 1984-08-29 1987-03-24 N/S Corporation Water filtration system
US4923366A (en) * 1989-02-01 1990-05-08 General Electric Company Reversible turbine pump
US6418943B1 (en) 1999-06-04 2002-07-16 Whirlpool Corporation Wash liquid circulation system for a dishwasher
US20080216518A1 (en) * 2007-03-06 2008-09-11 Yoo Sang-Hee Foreign materials filtering apparatus and washing machine having the same
US20080216519A1 (en) * 2007-03-06 2008-09-11 Yoo Sang-Hee Foreign materials filtering apparatus and washing machine having the same
US20080217243A1 (en) * 2007-03-06 2008-09-11 Yoo Sang-Hee Method for cleaning foreign materials filtering apparatus
US20080286121A1 (en) * 2007-05-14 2008-11-20 Vladimir Berger Ejector-type rotary device
US20100326899A1 (en) * 2009-06-30 2010-12-30 Ennis G Thomas Above ground water clarifier
US7926310B2 (en) 2007-03-06 2011-04-19 Lg Electronics Inc. Foreign materials filtering apparatus and washing machine having the same
US8020413B2 (en) 2007-03-06 2011-09-20 Lg Electronics Inc. Foreign materials filtering apparatus and washing machine having the same
US20120152866A1 (en) * 2010-12-21 2012-06-21 Stiles Jr Robert W Modular Pump and Filter System and Method
CN105422511A (zh) * 2014-09-11 2016-03-23 日本电产三协株式会社 泵装置
US20170356120A1 (en) * 2016-06-13 2017-12-14 Lg Electronics Inc. Drain pump for laundry treating apparatus
US10234065B2 (en) 2015-10-27 2019-03-19 Whirlpool Corporation Collet securing device for joining two fluid lines and providing lateral support at the connection of the two fluid lines
US10480117B2 (en) 2017-02-27 2019-11-19 Whirlpool Corporation Self cleaning sump cover
US10557469B2 (en) 2016-03-22 2020-02-11 Whirlpool Corporation Multi-outlet fluid flow system for an appliance incorporating a bi-directional motor
US10619289B2 (en) 2017-02-27 2020-04-14 Whirlpool Corporation Self cleaning diverter valve
US10634412B2 (en) 2017-04-10 2020-04-28 Whirlpool Corporation Concealed upstream air tower guide vanes
US10655266B2 (en) 2016-11-30 2020-05-19 Whirlpool Corporation Lint processing fluid pump for a laundry appliance
US10662574B2 (en) 2017-02-27 2020-05-26 Whirlpool Corporation Self cleaning heater exchanger plate
US10697700B2 (en) 2018-01-17 2020-06-30 Whirlpool Corporation Refrigeration water dispensing system
CN113700679A (zh) * 2021-08-25 2021-11-26 张阿贝 一种加装式水泵辅助机
CN114073464A (zh) * 2020-08-11 2022-02-22 宁波德润堂智能科技有限公司 擦地机清洁桶
EP3212835B1 (de) * 2014-10-29 2022-08-24 BSH Hausgeräte GmbH Wäschepflegegerät mit einer laugenpumpe
CN115370620A (zh) * 2022-09-21 2022-11-22 高邮市高农机械配件有限公司 一种水泵
US20240173655A1 (en) * 2022-11-25 2024-05-30 Samsung Electronics Co., Ltd. Microplastic filter for washing machines or other appliances

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007053042A2 (en) * 2005-11-04 2007-05-10 Fisher & Paykel Appliances Limited Washing machine pump control for water drainage, ventilation, dislodging blockage and recirculation
DE102007060193A1 (de) * 2007-12-14 2009-06-25 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Haushaltsgerät
SE0950054A1 (sv) * 2009-02-05 2010-08-06 Scania Cv Ab Kylsystem för vätskekylning av en förbränningsmotor
CN102072207A (zh) * 2010-11-22 2011-05-25 苏州顶裕节能设备有限公司 一种风机叶轮清洗装置
EP2746441A1 (de) * 2012-12-18 2014-06-25 Miele & Cie. KG Verfahren zum Betreiben eines wasserführenden Haushaltsgerätes und wasserführendes Haushaltsgerät
DE102019205919B4 (de) * 2019-04-25 2022-12-15 E.G.O. Elektro-Gerätebau GmbH Wasserführendes Haushaltsgerät und Verfahren zu seinem Betrieb

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US1675200A (en) * 1927-04-02 1928-06-26 Walter T Smith Pump
US3136254A (en) * 1961-06-05 1964-06-09 Blackstone Corp Bi-directional pump

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US3344623A (en) * 1964-07-16 1967-10-03 Whirlpool Co Bi-directional flow control conduit
US3455456A (en) * 1968-01-26 1969-07-15 Gen Motors Corp Retractable pin lint filter

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Publication number Priority date Publication date Assignee Title
US1675200A (en) * 1927-04-02 1928-06-26 Walter T Smith Pump
US3136254A (en) * 1961-06-05 1964-06-09 Blackstone Corp Bi-directional pump

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4652368A (en) * 1984-08-29 1987-03-24 N/S Corporation Water filtration system
US4923366A (en) * 1989-02-01 1990-05-08 General Electric Company Reversible turbine pump
US6418943B1 (en) 1999-06-04 2002-07-16 Whirlpool Corporation Wash liquid circulation system for a dishwasher
US7926310B2 (en) 2007-03-06 2011-04-19 Lg Electronics Inc. Foreign materials filtering apparatus and washing machine having the same
US8033144B2 (en) 2007-03-06 2011-10-11 Lg Electronics Inc. Foreign materials filtering apparatus and washing machine having the same
US20080217243A1 (en) * 2007-03-06 2008-09-11 Yoo Sang-Hee Method for cleaning foreign materials filtering apparatus
US20080216518A1 (en) * 2007-03-06 2008-09-11 Yoo Sang-Hee Foreign materials filtering apparatus and washing machine having the same
US8037721B2 (en) 2007-03-06 2011-10-18 Lg Electronics Inc. Foreign materials filtering apparatus and washing machine having the same
US7882715B2 (en) * 2007-03-06 2011-02-08 Lg Electronics Inc. Method for cleaning foreign materials filtering apparatus
US20080216519A1 (en) * 2007-03-06 2008-09-11 Yoo Sang-Hee Foreign materials filtering apparatus and washing machine having the same
US8020413B2 (en) 2007-03-06 2011-09-20 Lg Electronics Inc. Foreign materials filtering apparatus and washing machine having the same
US7914263B2 (en) * 2007-05-14 2011-03-29 Vladimir Berger Ejector-type rotary device
US20080286121A1 (en) * 2007-05-14 2008-11-20 Vladimir Berger Ejector-type rotary device
US20100326899A1 (en) * 2009-06-30 2010-12-30 Ennis G Thomas Above ground water clarifier
US8097155B2 (en) 2009-06-30 2012-01-17 Ennis G Thomas Above ground water clarifier
US20120152866A1 (en) * 2010-12-21 2012-06-21 Stiles Jr Robert W Modular Pump and Filter System and Method
US9555352B2 (en) * 2010-12-21 2017-01-31 Pentair Water Pool And Spa, Inc. Modular pump and filter system and method
CN105422511A (zh) * 2014-09-11 2016-03-23 日本电产三协株式会社 泵装置
CN105422511B (zh) * 2014-09-11 2018-05-08 日本电产三协株式会社 泵装置
EP3212835B1 (de) * 2014-10-29 2022-08-24 BSH Hausgeräte GmbH Wäschepflegegerät mit einer laugenpumpe
US10234065B2 (en) 2015-10-27 2019-03-19 Whirlpool Corporation Collet securing device for joining two fluid lines and providing lateral support at the connection of the two fluid lines
US10557469B2 (en) 2016-03-22 2020-02-11 Whirlpool Corporation Multi-outlet fluid flow system for an appliance incorporating a bi-directional motor
US20170356120A1 (en) * 2016-06-13 2017-12-14 Lg Electronics Inc. Drain pump for laundry treating apparatus
US10718081B2 (en) * 2016-06-13 2020-07-21 Lg Electronics Inc. Drain pump for laundry treating apparatus
US10655266B2 (en) 2016-11-30 2020-05-19 Whirlpool Corporation Lint processing fluid pump for a laundry appliance
US10480117B2 (en) 2017-02-27 2019-11-19 Whirlpool Corporation Self cleaning sump cover
US10662574B2 (en) 2017-02-27 2020-05-26 Whirlpool Corporation Self cleaning heater exchanger plate
US10619289B2 (en) 2017-02-27 2020-04-14 Whirlpool Corporation Self cleaning diverter valve
US11035073B2 (en) 2017-02-27 2021-06-15 Whirlpool Corporation Self cleaning sump cover
US11802360B2 (en) 2017-02-27 2023-10-31 Whirlpool Corporation Self cleaning sump cover
US11603615B2 (en) 2017-02-27 2023-03-14 Whirlpool Corporation Self cleaning sump cover
US10634412B2 (en) 2017-04-10 2020-04-28 Whirlpool Corporation Concealed upstream air tower guide vanes
US10697700B2 (en) 2018-01-17 2020-06-30 Whirlpool Corporation Refrigeration water dispensing system
US11592232B2 (en) 2018-01-17 2023-02-28 Whirlpool Corporation Refrigeration water dispensing system
CN114073464A (zh) * 2020-08-11 2022-02-22 宁波德润堂智能科技有限公司 擦地机清洁桶
CN113700679A (zh) * 2021-08-25 2021-11-26 张阿贝 一种加装式水泵辅助机
CN115370620A (zh) * 2022-09-21 2022-11-22 高邮市高农机械配件有限公司 一种水泵
US20240173655A1 (en) * 2022-11-25 2024-05-30 Samsung Electronics Co., Ltd. Microplastic filter for washing machines or other appliances
US12427453B2 (en) * 2022-11-25 2025-09-30 Samsung Electronics Co., Ltd. Microplastic filter for washing machines or other appliances

Also Published As

Publication number Publication date
JPS4944564A (cs) 1974-04-26
US3949578A (en) 1976-04-13
AU5791373A (en) 1975-01-16
CA995916A (en) 1976-08-31
AU474193B2 (en) 1976-07-15

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