EP0842632A3 - Automatic purge filtration system for a dishwasher - Google Patents

Automatic purge filtration system for a dishwasher Download PDF

Info

Publication number
EP0842632A3
EP0842632A3 EP97309235A EP97309235A EP0842632A3 EP 0842632 A3 EP0842632 A3 EP 0842632A3 EP 97309235 A EP97309235 A EP 97309235A EP 97309235 A EP97309235 A EP 97309235A EP 0842632 A3 EP0842632 A3 EP 0842632A3
Authority
EP
European Patent Office
Prior art keywords
wash
soil
pump
dishwasher
pressure
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.)
Granted
Application number
EP97309235A
Other languages
German (de)
French (fr)
Other versions
EP0842632A2 (en
EP0842632B1 (en
Inventor
Edward L. Thies
Roger J. Bertsch
Wilbur W. Jarvis
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.)
Whirlpool Corp
Original Assignee
Whirlpool 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 Whirlpool Corp filed Critical Whirlpool Corp
Publication of EP0842632A2 publication Critical patent/EP0842632A2/en
Publication of EP0842632A3 publication Critical patent/EP0842632A3/en
Application granted granted Critical
Publication of EP0842632B1 publication Critical patent/EP0842632B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4202—Water filter means or strainers
    • A47L15/4204—Flat filters
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225—Arrangements or adaption of recirculation or discharge pumps

Abstract

A dishwasher pump (28) and automatic purge system which includes a wash impeller (32) supported for rotation within a pump chamber wherein the pump chamber (30) has a main outlet and a sample outlet port (38,43). Wash liquid pumped out through the main outlet is recirculated throughout the dishwasher interior wash chamber. A soil collector (45) receives wash liquid through the sample outlet port. The soil collector includes a filter screen (48) for returning filtered wash liquid back into the sump (18) such that soils are retained in the soil collector. Pressure within the soil collector is sensed by a pressure sensor (52). The soil collector is purged by a drain pump (54) when the pressure within the soil accumulator exceeds a predetermined limit level such that soils are cleared from the collector and the filter screen. When the pressure within the soil accumulator is reduced to below the predetermined limit level, the drain pump is deenergized. A control valve (56) is provided for preventing fluid flow from the dishwasher sump to the drain pump during the purge operation while the wash pump (28) is operating. The control valve (56) is operated in response to fluid pressure created by the wash impeller (32).
EP19970309235 1996-11-19 1997-11-17 Automatic purge filtration system for a dishwasher Expired - Lifetime EP0842632B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3118296P 1996-11-19 1996-11-19
US31182P 1996-11-19

Publications (3)

Publication Number Publication Date
EP0842632A2 EP0842632A2 (en) 1998-05-20
EP0842632A3 true EP0842632A3 (en) 1999-02-03
EP0842632B1 EP0842632B1 (en) 2006-02-08

Family

ID=21858065

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970309235 Expired - Lifetime EP0842632B1 (en) 1996-11-19 1997-11-17 Automatic purge filtration system for a dishwasher

Country Status (2)

Country Link
EP (1) EP0842632B1 (en)
DE (1) DE69735228T2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6832617B2 (en) 2000-12-22 2004-12-21 General Electric Company Dishwasher fine filter assembly
DE10358970A1 (en) 2003-12-16 2005-07-21 BSH Bosch und Siemens Hausgeräte GmbH Dishwasher with intermediate pumping operation
US8066821B2 (en) 2005-02-09 2011-11-29 Whirlpool Corporation System for limiting pressure in a fine filter chamber for a dishwasher
US7610923B2 (en) 2005-02-09 2009-11-03 Maytag Corporation Pump and filter system for a drawer-type dishwasher
US8622065B2 (en) 2005-12-09 2014-01-07 Lg Electronics Inc. Dish washer
KR101241870B1 (en) * 2005-12-09 2013-03-11 엘지전자 주식회사 dish washer
DE102006026817A1 (en) * 2006-06-09 2008-01-03 Premark Feg L.L.C., Wilmington Commercial dishwasher in the form of a programmer
DE102010063711A1 (en) * 2010-12-21 2012-06-21 Premark Feg L.L.C. (N.D.Ges.D. Staates Delaware) Dishwasher with automatic dirt removal
US9339166B2 (en) 2014-03-11 2016-05-17 General Electric Company Dishwasher appliance and a method for operating the same
CN109183913B (en) * 2018-10-23 2024-04-19 蚌埠学院 Household water-saving device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4559959A (en) * 1982-10-18 1985-12-24 Hobart Corporation Dishwashing apparatus
JPH02128738A (en) * 1988-11-09 1990-05-17 Hitachi Ltd Method and apparatus for washing tableware
JPH02128737A (en) * 1988-11-10 1990-05-17 Matsushita Electric Ind Co Ltd Dish washer
EP0454640A1 (en) * 1990-04-26 1991-10-30 Aktiebolaget Electrolux Waste disintegrating device for a dishwater
US5165433A (en) * 1991-08-19 1992-11-24 Whirlpool Corporation Soil separator for a domestic dishwasher
US5429679A (en) * 1993-09-22 1995-07-04 Young, Jr.; Raymond A. Method for operating a low energy domestic dishwasher

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4559959A (en) * 1982-10-18 1985-12-24 Hobart Corporation Dishwashing apparatus
JPH02128738A (en) * 1988-11-09 1990-05-17 Hitachi Ltd Method and apparatus for washing tableware
JPH02128737A (en) * 1988-11-10 1990-05-17 Matsushita Electric Ind Co Ltd Dish washer
EP0454640A1 (en) * 1990-04-26 1991-10-30 Aktiebolaget Electrolux Waste disintegrating device for a dishwater
US5165433A (en) * 1991-08-19 1992-11-24 Whirlpool Corporation Soil separator for a domestic dishwasher
US5429679A (en) * 1993-09-22 1995-07-04 Young, Jr.; Raymond A. Method for operating a low energy domestic dishwasher

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 350 (C - 0744) 27 July 1990 (1990-07-27) *

Also Published As

Publication number Publication date
EP0842632A2 (en) 1998-05-20
DE69735228D1 (en) 2006-04-20
DE69735228T2 (en) 2006-10-26
EP0842632B1 (en) 2006-02-08

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