US3807419A - Dishwasher having means for collecting and removing food soil - Google Patents

Dishwasher having means for collecting and removing food soil Download PDF

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Publication number
US3807419A
US3807419A US00252543A US25254372A US3807419A US 3807419 A US3807419 A US 3807419A US 00252543 A US00252543 A US 00252543A US 25254372 A US25254372 A US 25254372A US 3807419 A US3807419 A US 3807419A
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United States
Prior art keywords
receptacle
chamber
liquid
drainage
sump
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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
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US00252543A
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English (en)
Inventor
D Cushing
T Jenkins
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General Electric Co
Original Assignee
General Electric Co
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Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US00252543A priority Critical patent/US3807419A/en
Priority to NL7305096A priority patent/NL7305096A/xx
Priority to YU1087073A priority patent/YU34003B/xx
Priority to GB1979573A priority patent/GB1372164A/en
Priority to IT23505/73A priority patent/IT982845B/it
Priority to SE7306539A priority patent/SE399512B/xx
Priority to DE2323551A priority patent/DE2323551A1/de
Priority to FR7316859A priority patent/FR2184673B1/fr
Priority to JP5306773A priority patent/JPS566771B2/ja
Application granted granted Critical
Publication of US3807419A publication Critical patent/US3807419A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • A47L15/4208—Arrangements to prevent clogging of the filters, e.g. self-cleaning
    • 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

Definitions

  • An automatic dishwashing machine is provided with a washing liquid filter filtering means in combination with a soil-collecting receptacle located in the machines dishwashing chamber whereby particles of food soil suspended in the recirculated washing liquid within the chamber are collected during washing liquid recirculation and then flushed out of the machine during the wash chamber drainage operation.
  • the domestic automatic dishwasher is generally of the type having a washing chamber with openframework racks therein for holding dishes to be washed and means for recirculating washing liquid accumulatedin the lower end of the washing chamber upwardly over the dishes to loosen and carry away food soil therefrom.
  • An inherent problem in such a machine is that food soil particles are suspended in the recirculating flow of washing liquid and that redeposition of these particles on the clean dishes can occur during the cleaning process.
  • large food particles flushed fromthe dishes will be carried downwardly and broken up into particularly small particles that are then washed back on to the dishes. These small particles adhere to the cleaned items and often defy removal during subsequent rinsing steps in the operation of the machine.
  • the present invention comprehends the provision of an improved self-cleaning filter arrangement in a dishwashing machine in combination with a soil receptacle preferably disposed at a position remote from the wash chambers sump and adapted to be automatically cleaned during the operation of the machine.
  • the preferred general structure of this invention is adaptable for use with a dishwasher having an axial flow pumping mechanism or various other pumping arrangements.
  • the present invention may be broadly summarized as relating to an automatic dishwashing machine of the type having a washing chamber with a drainage sump in the bottom wall thereof and means therewith for providing washing liquid in the washing chamber and accumulating it at a relatively low level therein.
  • the washi ng machine includes a means for circulating the flow of washing liquid generally throughout the washing chamber, and a drainage sump is provided in the bottom wall of the chamber for conducting soil-laden washing liquid or effluent out of the machine.
  • a soilcollecting receptacle or trough is provided in the wash chamber and has an open side preferably above the level of accumulated liquid in the chamber and in the path of liquid circulated within the chamber.
  • Adjacent the soil-collecting receptacle is a fine-mesh screen filter disposed across the flow of liquid recirculation and adapted to pass liquid therethrough while blocking the passage of food soil particles.
  • the filtering screen is situated so that its collecting side is disposed toward the aforementioned collecting receptacle.
  • the other side of the screen filter is contacted by some of the recirculating flow of liquid whereby the soil particles collected on its back side are flushed into the collecting receptacle.
  • the invention further includes means for draining particles from the receptacle and into a hopper where they are washed out of the machine, including alternative methods and preferred associated struc ture for creating a pressure differential in the hopper whereby a pressurized evacuation action occurs to empty the hopper of collected soil.
  • FIG. 1 is a side elevational cut-away view of the bottom portion of a domestic automatic dishwashing machine in accordance with the present invention
  • FIG. 2 is a fragmentary sectional view taken along lines 2-2 of FIG. 1;
  • FIG. 3 is a view taken along lines 3-3 of FIG. 2;
  • FIG. 4 is a view in vertical section taken along lines 4-4 of FIG. 2;
  • FIG. 5 is an alternate structural arrangement for accomplishing the general function of the structure first shown in FIG. 4.
  • FIG. 1 there is illustrated the lower portion of an automatic dishwashing machine 10 including a cabinet 11 defining therein a washing chamber 12. Access to the washing chamber 12 is obtained by opening a door 13 pivoted at its lower end and located on the front side of the cabinet 11. A dish rack 14 is shown supported for slidable movement within the washing chamber 12 so that it may be selectively slid outwardly through the cabinets front access opening to facilitate loading and unloading of the items to be washed in the machine 10.
  • the lower end of the washing chamber 12 is defined by a bottom wall or floor portion 15 that separates it from a lower motor-pump compartment 16.
  • a motor-pump assembly 17 housed within the compartment 16 is a motor-pump assembly 17 including an electric motor 18 that drives a pump means 19 for recirculating washing liquid to and from the washing chamber 12 and for draining washing liquid from the washing chamber 12 outwardly to the household sewage system.
  • the operational cycle of such a machine generally includes a number of washing and rinsing steps and a final drying step.
  • heated water from the household supply line is directed into the washing chamber 12 by valve means actuated by a timer control (not shown).
  • the water accumulates to a predetermined level on the floor portion 15 and then the timer control of the machine causes the electric motor 18 to be energized to drive the pump 19 in a recirculation operation.
  • the accumulated washing liquid is drained out of the washing chamber 12 by means of a sump 20 emptying into a conduit 21 leading to the pump 19.
  • the liquid is then forced upwardly by the pump 19 through a conduit 22 leading to a hollow horizontally elongated spray arm 25 located within the lower portion of the washing chamber 12.
  • washing liquid is therefore used herein in a generic sense to refer broadly to any form of cleansing liquid utilized for recirculation within the dishwashing machine.
  • the washing liquid is distributed from the spray arm 25 by means of orifices 26 spaced therealong. along.
  • the spray arm 25 is reactively driven by having at least one of the orifices disposed to discharge a jet stream in a direction such that the spray arm reacts to the force of the discharge and rotates in a horizontal plane. A thorough and generally uniform distribution of washing liquid in the washing chamber 12 is thereby obtained.
  • Recirculation of the washing liquid from the washing chamber 12, through the pump 19 and, thence through the spray arm 25, is continued for a predetermined length of time after which the electrical circuit to the motor 18 is automatically interrupted to halt the pumping action. Thereafter, a drain valve means (not shown) is automatically switched such that an outlet within the pump means 19 for recirculated washing liquid is closed and a drain line outlet is opened. The motor 18 is then reenergized whereby the pump 19 pumps the washing liquid from the washing chamber 12 and outwardly through a drain hose 27 leading ultimately to the household sewage system.
  • a soil-removal means in the form of a receptacle 30 having a trough 31 disposed in the path of recirculation of liquid within the washing chamber 12 and adapted to fill and overflow with the recirculated liquid caught therein.
  • the soil-removal means further includes a filtering means 32 contiguous to the trough 31 and disposed in the path of the liquid overflow whereby liquid from the receptacle passes through the screen while soil particles carried in the washing liquid are blocked from passageand therefore halt against the back side of the screen.
  • the trough 31 may be transversely elongated to extend across a back wall 34 of chamber 12.
  • the receptacle 30 further comprises a lower end portion in the form of a tubular box or hopper 35.
  • the trough 31 has a configuration such that liquid collected therein will flow centrally downwardly through an opening 36 (see FIG. 5) into the hopper 35.
  • a bottom 33a of the trough 31 is sloped centrally downwardly, as shown in FIG. 2, and a back wall portion 33b, as shown in FIG. 1, is sloped inwardly whereby liquid collected in the trough will flow toward the central bottom opening 36 thereof.
  • the side of the trough 31 facing toward the wash chamber 12 has an erect wall portion 330 that extends upwardly to the lower edge of the filtering screen 32.
  • the filtering screen 32 is disposed at approximately a 45 angle with reference to the back wall 34 of the wash chamber 12, and the upper long edge of the filtering screen 32 abuts against the forward edge of a horizontally disposed perforated cover plate 37.
  • the cover plate 37 is disposed across the troughs opening and is provided with a uniform arrangement of apertures 38 equidistantly spaced thereacross, as shown in FIG. 3. Successive longitudinally oriented slots 39 are also provided in the cover plate 37.
  • the washing step of the operational cycle commences with the introduction of water to the washing chamber 12 whereby water accumulates on the floor portion 15 to a maximum level below the under surface of the spray arm 25.
  • Detergent is automatically added to the water and the resultant washing liquid is caused to follow a circular path down the sump 20 and through the conduit 21 to the pump 19.
  • motor 18 causes the pump 19 to force the washing liquid upwardly and outwardly through the hollow spray arm 25.
  • the spray arm 25 rotates in response to a jet streamdischarged from at least one end thereof and the orifices 26 discharge streams of washing liquid upwardly over items stored in the rack 14 and generally over additional items in one or more other vertically spaced racks (not shown).
  • the cascade of washing liquid distributed throughout the washing chamber 12 tends to progress downwardly over the items in the rack but primarily down along the inside surface of the door 13, the side walls of the wash chamber 12 and the back wall 34. Therefore, the back wall 34 serves as a shedding surface for directing recirculated washing liquid downwardly against the cover plate 37.
  • the soil-laden washing liquid flows downwardly repeatedly along the washing chamber back wall 34 toward the cover plate 37. Much of the washing liquid moves through the slots 39 and the perforations 38 of the cover plate 37 and into the trough 31. Obviously, once the trough 31 is initially filled, it flows over its forward wall 330 and outwardly through the filtering screen 32.
  • the filtering screen 32 is preferably of a fine mesh whereby even very small food soil particles will be blocked from passage therethrough and retained by the back side of the filtering screen 32.
  • the filtering screen 32 is disposed whereby washing liquid moving down behind the rack 14 and forward of the back wall 34 will strike against the outside surface of the screen.
  • the force of the downwardly cascading washing liquid impinging against the outside surface of the screen 32 serves to jar soil loose from the back side of the screen 32 whereby it will continuously move away from the screen as it collects thereagainst to keep the screen open for passage of washing liquid therethrough.
  • quantities of soil particles retained in the trough 31 by the screen 32 increase and agglomerate, they tend to precipitate and settle downwardly into the tubular hopper 35 so that by the end of the wash step of the machines operational cycle a high percentage of suspended soil particles have thus been removed from the recirculated washing liquid in the wash chamber 12 and collected in the hopper 35.
  • the timer-control means de-energizes the motor 18 for a brief period to permit final drainage of liquid from the cleaned items in the chamber 12.
  • a valve means within the pump 19 (not shown is switched from a first to a second position in preparation for draining the accumulated washing liquid from the lower end of the wash chamber 12.
  • the motor 18 is reenergized whereby the pump 19 receives the washing liquid from the chamber 12 through the sump 20 and the conduit 21 and pumps it'outwardly through the drain line 27 to the lower end of the hopper 35.
  • the drainage flow or effluent is pumped through the hopper and outwardly through a final discharge line 44 draining outwardly from the dishwasher 10.
  • a lower end opening 52 serves as an entry for chamber 12 effluent pumped from the sump 20, and a side opening 53 permits discharge of effluent from the area51.
  • the motor-pump assembly 17 automatically pumps the washing liquid from the wash chamber 12 through the drain line 27 and thence through the hopper 35 and outwardly through the final discharge line 44.
  • the hopper 35 in FIG. 4 is provided with an elongated vertically reciprocal valve stem 55 having a lower end valve member or annular seal 56 and an upper end annular valve member or seal 57.
  • the pressurized flow fills the area 51 and progresses outwardly through the discharge opening 53.
  • the force of the flow causes a one-way valve member 60 to deflect outwardly whereby the effluent flow, including the collected soil particles from the area 51, are discharged out of the machine through the final discharge line 44.
  • valve stem 55 is in its downward position, as shown in FIG. 4, whereby the opening 36 permits collected soil from the trough 31 to precipitate downwardly into the hopper 35 and occupy area 51.
  • a flapper valve 65 in the trough 31 is arranged to be normally closed during the washing (or rinsing) step of the machines operational cycle whereby it covers over a trough drain opening 66 in the forward wall 33c of the trough 31.
  • the flapper valve 65 serves as a means for independently draining the trough when the hopper is being drained and comprises a valve seal portion 67 normally contiguous to the inside surface of the wall 330 over the opening 66, and a rearwardly extending integral leg portion 68 that projects over an upwardly extended nose portion 69 of the valve stem 55.
  • the valve stem 55 is caused to move upwardly by the effluent flow entering the area 51 of the hopper 35, the nose portion 69 contacts the valve leg portion 68 and urges it to swing upwardly whereby the seal portion 67 is swung away from the opening 66. Therefore, during the effluent drainage operation of the machine 10, when the annular seal 57 closes off the opening 36 in the hopper 35, the opening 66 permits final drainage of any residual washing liquid from the trough 33 into the sump 20.
  • valve stem 55 is in the downward position, as shown in FIG. 4, whereby the opening 36 permits soil particles to move downward into the area 51 in response to gravity.
  • the annular seal 56 is disposed across the opening 52 to prevent any leakage of anysoiled liquid back through the line 27, and the valve member 60 is disposed across the opening 53 until liquid pressure thereagainst causes it to open.
  • the valve member 60 thus serves as a gate to prevent drainage backflow into the machine in a situation wherein the household sewage system is temporarily clogged whereby it will not accept the effluent drainage flow from the dishwashing machine.
  • the soilremoval means shown in the dishwasher 10 may alternatively include a hopper 35 adapted to flush soil particles therefrom without the inclusion of specific me chanical structure and moving parts as described in reference to FIG. 4.
  • FIG. 5 shows the hopper 35 defining a collecting area 51 that is in open communication at all times with the trough 31 by means of the opening 36. Emptying of the area 51 of liquid and collected soil particles occurs in the FIG. embodiment of the hopper due to a pressure differential created in the area 51 because of the inclusion of a jet pump arrangement in the lower area of the hopper 35.
  • This arrangement includes the provision of a constricted or converging inlet tube 75 in liquid flow communication with the drain line 27 whereby pumped-in effluent increases its velocity as its exits from the inward end 76 of the tube 75, resulting in a drop in pressure between the end 76 and a tube 77 disposed to receive the output of effluent from the tube 75.
  • the weight of the soil-laden liquid collected in the chamber 35 is sufficient to cause the contents of the chamber 35 to move downwardly toward the area of comparatively low pressure resulting at the output end 76 of the tube 75 whereby the area 51 is evacuated of the liquid and the soil carried therewith.
  • liquid and/or soil in the trough 31 will drain out through the area 51 and outwardly through the discharge line 41 so that the trough is empty and ready for the next recirculation operation in the machine.
  • an automatic dishwashing machine having a wash chamber, means for accumulating washing liquid in the lower portion of the chamber and circulating a flow of washing liquid throughout the chamber, means for draining the liquid from the machine including a sump in the bottom of the chamber, a soil-removal receptacle independent of the sump and disposed in the path of recirculation and adapted to fill and overflow with recirculating liquid, a filtering means disposed in the path of the overflow and adapted to pass liquid from the receptacle and block passage of soil particles therethrough, the receptacle having means therewith to effect drainage thereof at a predetermined time during the operation of the machine, and the filtering means being adapted to be automatically cleaned by the recirculating liquid in the chamber.
  • the filtering means comprises a fine-mesh screen disposed with a rear side thereof across the path of overflow from the receptacle and its front side disposed to be washed by the recirculation flow of liquid striking thereagainst whereby soil particles clinging to the front side are dislodged back toward the receptacle.
  • the invention of claim 1 further including a sump in the bottom of the wash chamber for collecting liquid drainage from the chamber, the sump being in drain flow communication with the collecting receptacle whereby liquid from the sump is merged with the liquid drained from the receptacle and thereafter discharged from the machine, and means in the machine for pressurizing the drain flow discharged therefrom.
  • the means to effect drainage of the receptacle includes means for sealing off a portion of the receptacle from the chamber during the receptacle drainage operation, and the machine having means for draining liquid from the chamber and thence through the sealed-off portion of the receptacle, and means for pressurizing the liquid drainage from the receptacle whereby the liquid pressure in the sealed-off portion of the receptacle during the drainage operation is greater than atmospheric pressure.
  • the invention of claim 1 including means for causing a pressure differential between upper and lower portions of the receptacle during the drainage operation in order to urge collected soil out of the receptacle.
  • the receptacle includes a hopper for receiving and temporarily retaining soil particles.
  • the receptacle includes a trough portion and a hopper for receiving soil particles from the trough portion, means for sealing off the hopper from the trough portion during drainage of the hopper, and wherein the trough is provided with means for effecting its drainage independently of the hopper while the hopper is being drained.
  • the receptacle drainage means includes structure comprising a jet pump arrangement.
  • an automatic dishwashing machine of the type having a dishwashing chamber with a drainage sump in the bottom thereof, means for providing washing liquid and accumulating it to a relatively low level in the bottom of the chamber, means for circulating the flow of washing liquid throughout the washing chamber, means for draining the chamber outwardly through the sump, a soil collecting receptacle having an opening into the chamber above the normal level of accumulated liquid in the chamber, the opening being in the path of washing liquid circulated in the chamber, means adjacent the lower end of the receptacle for draining the receptacle, the means for draining the receptacle being in liquid flow communication with the sump, means for pressurizing the drainage flow out of the sump and toward the receptacle drainage means, and means for directing drainage both from the sump and the receptacle outwardly from the dishwashing machine.

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  • Washing And Drying Of Tableware (AREA)
US00252543A 1972-05-12 1972-05-12 Dishwasher having means for collecting and removing food soil Expired - Lifetime US3807419A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US00252543A US3807419A (en) 1972-05-12 1972-05-12 Dishwasher having means for collecting and removing food soil
NL7305096A NL7305096A (enrdf_load_stackoverflow) 1972-05-12 1973-04-11
YU1087073A YU34003B (en) 1972-05-12 1973-04-20 Machine for washing dishes, provided with a unit for accumulation and removing food refuse
GB1979573A GB1372164A (en) 1972-05-12 1973-04-26 Dishwashers
IT23505/73A IT982845B (it) 1972-05-12 1973-04-27 Lavastoviglie con dispositivi per raccogliere ed asportare lo sporco dei cibi
SE7306539A SE399512B (sv) 1972-05-12 1973-05-09 Anordning for att uppsamla och avlegsna matrester vid automatiska diskmaskiner
DE2323551A DE2323551A1 (de) 1972-05-12 1973-05-10 Geschirrspueler mit mitteln zum sammeln und abfuehren von speiseresten
FR7316859A FR2184673B1 (enrdf_load_stackoverflow) 1972-05-12 1973-05-10
JP5306773A JPS566771B2 (enrdf_load_stackoverflow) 1972-05-12 1973-05-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00252543A US3807419A (en) 1972-05-12 1972-05-12 Dishwasher having means for collecting and removing food soil

Publications (1)

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US3807419A true US3807419A (en) 1974-04-30

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Application Number Title Priority Date Filing Date
US00252543A Expired - Lifetime US3807419A (en) 1972-05-12 1972-05-12 Dishwasher having means for collecting and removing food soil

Country Status (9)

Country Link
US (1) US3807419A (enrdf_load_stackoverflow)
JP (1) JPS566771B2 (enrdf_load_stackoverflow)
DE (1) DE2323551A1 (enrdf_load_stackoverflow)
FR (1) FR2184673B1 (enrdf_load_stackoverflow)
GB (1) GB1372164A (enrdf_load_stackoverflow)
IT (1) IT982845B (enrdf_load_stackoverflow)
NL (1) NL7305096A (enrdf_load_stackoverflow)
SE (1) SE399512B (enrdf_load_stackoverflow)
YU (1) YU34003B (enrdf_load_stackoverflow)

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US3949772A (en) * 1974-12-13 1976-04-13 General Electric Company Door type dishwasher
US4150679A (en) * 1977-11-23 1979-04-24 General Electric Company Dishwasher with improved bypass filter arrangement
US4168715A (en) * 1978-05-26 1979-09-25 Whirlpool Corporation Dishwasher soil separator
DE2951837A1 (de) * 1978-12-29 1980-07-17 Hobart Corp Verfahren zum sammeln und entfernen von speiseresten und vorrichtung zur durchfuehrung des verfahrens
DE3021755A1 (de) * 1980-06-10 1981-12-24 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Verfahren zum entfernen von speiseresten aus dem spuelbehaelter einer geschirrspuelmaschine und derartige maschine zur durchfuehrung des verfahrens
US4319598A (en) * 1980-09-22 1982-03-16 Whirlpool Corporation Soil separator drain valve
US4319599A (en) * 1980-09-22 1982-03-16 Whirlpool Corporation Vertical soil separator for dishwasher
US4346723A (en) * 1981-03-25 1982-08-31 Hobart Corporation Apparatus for a warewasher bypass soil collector
US4350306A (en) * 1980-09-22 1982-09-21 Whirlpool Corporation Chopper for dishwasher soil separator
US4392891A (en) * 1980-07-02 1983-07-12 Hobart Corporation Dishwasher soil collecting circuit
US4468333A (en) * 1981-03-25 1984-08-28 Hobart Corporation Method for a warewasher bypass soil collector
US4848382A (en) * 1987-10-22 1989-07-18 Whirlpool Corporation Tub bottom soil separator for dishwasher
US5320120A (en) * 1993-06-17 1994-06-14 General Electric Company Dishwasher with dual pumps
US5579790A (en) * 1995-04-12 1996-12-03 White Consolidated Industries, Inc. Filter screen with backflush
US5601660A (en) * 1995-09-19 1997-02-11 Lg Electronics Inc. Food debris filtering apparatus for dishwasher and method thereof
EP0748607A3 (en) * 1995-06-14 1997-05-14 Smeg Spa Device for monitoring filter washing in a dishwasher
US5967760A (en) * 1997-11-14 1999-10-19 U.S. Controls Corporation Jet pump with filter for washing machines
US6189550B1 (en) * 1997-12-30 2001-02-20 Bsh Bosch Und Siemens Hausgeraete Gmbh Pump-connector
USRE37831E1 (en) 1995-08-25 2002-09-10 Whirlpool Corporation Soil separation channel for dishwasher pump system
US20030051514A1 (en) * 1999-08-18 2003-03-20 Lg Electronics Inc. Washing machine
US20040003833A1 (en) * 2002-07-02 2004-01-08 Maytag Corporation Dishwasher pump and filteration system
US20040159337A1 (en) * 2002-07-02 2004-08-19 Johnson Thomas M. Dishwasher pump and filtration system
US20050051201A1 (en) * 2003-09-05 2005-03-10 Ashton Robert H. Dishwasher filter
DE102006026817A1 (de) * 2006-06-09 2008-01-03 Premark Feg L.L.C., Wilmington Gewerbliche Geschirrspülmaschine in Form eines Programmautomaten
US20100288306A1 (en) * 2009-05-13 2010-11-18 Electrolux Home Products, Inc. Filtration system for a dishwasher, and associated apparatus and method
CN108498046A (zh) * 2017-02-27 2018-09-07 伊莱克斯商用电器有限公司 洗碗机器
CN110448708A (zh) * 2019-07-10 2019-11-15 老肯医疗科技股份有限公司 用于医用清洗消毒机的循环管路系统及其使用方法

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DE2556480C2 (de) * 1975-12-16 1985-02-07 Bauknecht Hausgeräte GmbH, 7000 Stuttgart Geschirrspülmaschine
JPS534848A (en) * 1976-07-02 1978-01-17 Hitachi Ltd Magnetic amplifier
DE19636014B4 (de) * 1995-11-24 2006-03-02 AEG Hausgeräte GmbH Vorrichtung und Verfahren zur Filtration einer Flüssigkeit

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AT304004B (de) * 1969-05-08 1972-12-27 Zanussi A Spa Industrie Geschirrspülmaschine
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US2681658A (en) * 1949-10-11 1954-06-22 Hobart Mfg Co Dishwasher
US3122148A (en) * 1960-01-13 1964-02-25 Colston Ltd C Dishwasher with multiple filter means
US3129711A (en) * 1960-09-29 1964-04-21 Gorman Rupp Ind Inc Dishwasher recirculating assembly
US3542594A (en) * 1968-06-19 1970-11-24 Maytag Co Fluid control system
US3732877A (en) * 1970-04-02 1973-05-15 H Kloeg Devices for cleaning objects
US3669132A (en) * 1970-09-29 1972-06-13 Wesley Mamrose Dishwashing apparatus

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3949772A (en) * 1974-12-13 1976-04-13 General Electric Company Door type dishwasher
US4150679A (en) * 1977-11-23 1979-04-24 General Electric Company Dishwasher with improved bypass filter arrangement
US4168715A (en) * 1978-05-26 1979-09-25 Whirlpool Corporation Dishwasher soil separator
DE2951837A1 (de) * 1978-12-29 1980-07-17 Hobart Corp Verfahren zum sammeln und entfernen von speiseresten und vorrichtung zur durchfuehrung des verfahrens
DE3021755A1 (de) * 1980-06-10 1981-12-24 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Verfahren zum entfernen von speiseresten aus dem spuelbehaelter einer geschirrspuelmaschine und derartige maschine zur durchfuehrung des verfahrens
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Publication number Publication date
SE399512B (sv) 1978-02-20
DE2323551A1 (de) 1973-11-29
YU108773A (en) 1978-05-15
NL7305096A (enrdf_load_stackoverflow) 1973-11-14
YU34003B (en) 1978-10-31
FR2184673B1 (enrdf_load_stackoverflow) 1977-02-11
GB1372164A (en) 1974-10-30
IT982845B (it) 1974-10-21
JPS566771B2 (enrdf_load_stackoverflow) 1981-02-13
FR2184673A1 (enrdf_load_stackoverflow) 1973-12-28
JPS4949465A (enrdf_load_stackoverflow) 1974-05-14

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