US2492288A - Drain means for dishwashers and the like - Google Patents

Drain means for dishwashers and the like Download PDF

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Publication number
US2492288A
US2492288A US638319A US63831945A US2492288A US 2492288 A US2492288 A US 2492288A US 638319 A US638319 A US 638319A US 63831945 A US63831945 A US 63831945A US 2492288 A US2492288 A US 2492288A
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US
United States
Prior art keywords
liquid
drain
drain opening
receptacle
impeller
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
US638319A
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English (en)
Inventor
Hollerith Charles
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.)
Individual
Original Assignee
Individual
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
Priority to FR960138D priority Critical patent/FR960138A/fr
Application filed by Individual filed Critical Individual
Priority to US638319A priority patent/US2492288A/en
Priority to GB22539/47A priority patent/GB625640A/en
Priority to CH276092D priority patent/CH276092A/fr
Application granted granted Critical
Publication of US2492288A publication Critical patent/US2492288A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A47L15/02—Washing or rinsing machines for crockery or tableware with circulation and agitation of the cleaning liquid in the cleaning chamber containing a stationary basket
    • A47L15/06—Washing or rinsing machines for crockery or tableware with circulation and agitation of the cleaning liquid in the cleaning chamber containing a stationary basket by means of an impeller in the chamber
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/85986—Pumped fluid control

Definitions

  • the drain valve In dishwashers of the above type, the drain valve is closed while the impeller motor is running, and when the motor is stopped the drain valve opens. According to the present invention, the drain valve has been eliminated and the washing liquid is confined to the washing vat by a. rotating baflie or pump driven by the impeller. motor. When the impellen motor stops, the washing and rinsing liquid flows through the bafiie or, pump vanes to the drain for discharge from the apparatus.
  • one object of the invention is to provide a valveless washing vat for dishwashers and the like, in which the discharge of liquids is controlled by repelling the liquid from the drain opening during the washing and rinsing part of the cycle of operation.
  • Another object resides in providing a motor driven impeller and liquid drain controlling unit, in which means are provided for repelling the liquid from the drain while the motor driving the impeller is operating.
  • a still further object of the invention is to provide an improved valve for controlling the discharge of liquids from a container, the valve being in the form of a rotated element.
  • a still further object of the invention is to provide an improved valve controlling the flow of liquid from the container movement of valve being performed by rotated elements and repelling the liquid from discharge by centrifugal action.
  • the vat ID of the dishwasher in which the dishes are washed and rinsed in the well-known manner, has the central opening I2 closed by the sump (4 when the latter is secured in position by a suitable ring 16.
  • the motor I8 is supported from the sump l4 and drives the shaft 20 upon which the impeller 22 and pump 24 are mounted.
  • a conical wall 26 defines a central drain opening 28.
  • the pump 24 has a hub 30 and radial blades 32 rotated by the shaft 20 to sweep the wall 26 with a slight amount of clearance to eject all liquids from the drain opening while the motor I8 is running.
  • the motor' l8 would be started before any washing liquid is admitted to the vat l0.
  • the pump 24 will be so designed as not to interfere with the efiective action of the impeller 22. It is anticipated, however, that the pump and impeller may be designated as a single integral unit, as by suitable barangs, the action of the pump in ejecting the liquid from the drain opening may be employed in connection with the washing or rinsing operation taking place in the vatof the dishwasher above the pump and impeller structure.
  • a flow control device operatively associated with said drain opening to control the discharge therethrough, said device comprising a rotary bladed member adapted when in rotation to repel the flow of liquid to the drain opening and being formed to permit the liquid to fiow therethrough to the drain opening when the said member is stationary, means for rotating said member, and means supporting the said bladed member in position to sweep the inside of said encompassing wall portion with the member rotatable in intimate liquid sealing relation with respect to said encompassing wall portion, the construction and arrangement being such that whereas the flow control device is operative when in rotation to hold the body of liquid trapped 56 within the receptacle it permits the
  • a receptacle such as the vat of a dishwasher, adapted to hold a body of liquid for ultimate discharge therefrom, said receptacle having an associated wall surface portion adapted to support said body of liquid for retention within the receptacle and said wall surface portion having a drain opening therein for the discharge of the liquid therethroush with a portion of said wall surface portion encompassing said drain opening, supporting structure, a flow control device for said drain opening supported on said structure, said device comprising a centrifugal impeller rotor having blades defining liquid flow passages between them and said structures supporting said rotor in position with respect to said drain Opening so that the outer peripheral portions of said blades are disposed in intimate liquid sealing rotatable relation with respect to the inside of said encompassing wall surface portion whereas the inner peripheral portions of the blades are disposed over the said drain opening, whereby the outer ends of said liquid flow passages open to an inflow of liquid from within the interior of the receptacle at a radially outwardly disposed position
  • a receptacle such as the vat of a dishwasher, adapted to hold a body of liquid for ultimate discharge therefrom, said receptacle having an associated wall surface adapted to support said body of liquid for retention within the receptacle and said surface having a drain opening therein for the discharge of the 4 liquid therethrough with a.
  • a flow control device for said drain opening supported on said structure comprising a centrifugal impeller rotor having radially arranged blades defining liquid now passages between them, said structure supporting said rotor in position so that the outer peripheral portions of said blades are disposed in intimate rotatable liquid sealing relation with respectto the insideof said encompassing wall surface portion whereas the inner peripheral portions of the blades are disposed over the said drain opening, whereby the outer ends of said liquid flow passages open at their outer ends to an inflow of liquid from within the receptacle at a radially outwardly disposed position with respect to said drain opening whereas the inner ends of said passages connect for discharge to said drain opening; said liquid flow passages and said drain opening being of substantial area to permit rapid emptying of the receptacle, and means for rotating said rotor to cause the said peripheral blade portions to sweep over said encompassing wall surface portion'in liquid sealing relation thereto, the construction and arrangement being such that whereas in the

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US638319A 1945-12-29 1945-12-29 Drain means for dishwashers and the like Expired - Lifetime US2492288A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR960138D FR960138A (enMihai) 1945-12-29
US638319A US2492288A (en) 1945-12-29 1945-12-29 Drain means for dishwashers and the like
GB22539/47A GB625640A (en) 1945-12-29 1947-08-13 Improvements in and relating to dishwashers or the like
CH276092D CH276092A (fr) 1945-12-29 1947-12-29 Appareil de lavage.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US638319A US2492288A (en) 1945-12-29 1945-12-29 Drain means for dishwashers and the like

Publications (1)

Publication Number Publication Date
US2492288A true US2492288A (en) 1949-12-27

Family

ID=24559544

Family Applications (1)

Application Number Title Priority Date Filing Date
US638319A Expired - Lifetime US2492288A (en) 1945-12-29 1945-12-29 Drain means for dishwashers and the like

Country Status (4)

Country Link
US (1) US2492288A (enMihai)
CH (1) CH276092A (enMihai)
FR (1) FR960138A (enMihai)
GB (1) GB625640A (enMihai)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2604106A (en) * 1945-04-11 1952-07-22 Carlstedt Sven Borje Fredrik Means for controlling drainage of liquid from washing machines
US2678051A (en) * 1949-04-08 1954-05-11 Gen Electric Washing apparatus
US2681658A (en) * 1949-10-11 1954-06-22 Hobart Mfg Co Dishwasher
US2684921A (en) * 1949-05-04 1954-07-27 Carlstedt Sven Borje Fredrik Dishwashing machine operation
US2711179A (en) * 1953-11-30 1955-06-21 Gen Electric Dishwashing machine
US2715410A (en) * 1953-12-30 1955-08-16 Gen Electric Drainage control system for dishwashers
US2730114A (en) * 1950-03-23 1956-01-10 Carlstedt Sven Borje Fredrik Automatic dish-washing machine and control mechanism
US2751917A (en) * 1952-01-04 1956-06-26 Gen Electric Dishwashing machine
US2775975A (en) * 1954-02-01 1957-01-01 Gen Electric Drain control system
US2825350A (en) * 1951-11-01 1958-03-04 Gen Electric Drainage control means for dishwashing apparatus and the like
US2954791A (en) * 1958-01-02 1960-10-04 Gen Electric Drainage control means for dishwashing apparatus
US3099992A (en) * 1961-11-28 1963-08-06 Gen Motors Corp Reversible pump-motor assembly for a dishwasher
US3370608A (en) * 1966-08-12 1968-02-27 Whirlpool Co Liquid handling apparatus with pump means having mount and seal
US3583835A (en) * 1969-07-17 1971-06-08 Whirlpool Co Dishwasher motor mounting
US4476886A (en) * 1981-12-15 1984-10-16 Kamyr Ab Affixation of a pump to a tank

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1050698A (en) * 1912-05-17 1913-01-14 Walter P Scheurmann Centrifugal pump, blower, and the like.
US2157112A (en) * 1931-09-16 1939-05-09 Douglas E Bonner Machine for cleansing and treating
US2384254A (en) * 1942-04-20 1945-09-04 Self Priming Pump & Eng Co Ltd Motor-driven centrifugal pump for liquid
US2393127A (en) * 1943-10-01 1946-01-15 Summers John William Centrifugal pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1050698A (en) * 1912-05-17 1913-01-14 Walter P Scheurmann Centrifugal pump, blower, and the like.
US2157112A (en) * 1931-09-16 1939-05-09 Douglas E Bonner Machine for cleansing and treating
US2384254A (en) * 1942-04-20 1945-09-04 Self Priming Pump & Eng Co Ltd Motor-driven centrifugal pump for liquid
US2393127A (en) * 1943-10-01 1946-01-15 Summers John William Centrifugal pump

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2604106A (en) * 1945-04-11 1952-07-22 Carlstedt Sven Borje Fredrik Means for controlling drainage of liquid from washing machines
US2678051A (en) * 1949-04-08 1954-05-11 Gen Electric Washing apparatus
US2684921A (en) * 1949-05-04 1954-07-27 Carlstedt Sven Borje Fredrik Dishwashing machine operation
US2681658A (en) * 1949-10-11 1954-06-22 Hobart Mfg Co Dishwasher
US2730114A (en) * 1950-03-23 1956-01-10 Carlstedt Sven Borje Fredrik Automatic dish-washing machine and control mechanism
US2825350A (en) * 1951-11-01 1958-03-04 Gen Electric Drainage control means for dishwashing apparatus and the like
US2751917A (en) * 1952-01-04 1956-06-26 Gen Electric Dishwashing machine
US2711179A (en) * 1953-11-30 1955-06-21 Gen Electric Dishwashing machine
US2715410A (en) * 1953-12-30 1955-08-16 Gen Electric Drainage control system for dishwashers
US2775975A (en) * 1954-02-01 1957-01-01 Gen Electric Drain control system
US2954791A (en) * 1958-01-02 1960-10-04 Gen Electric Drainage control means for dishwashing apparatus
US3099992A (en) * 1961-11-28 1963-08-06 Gen Motors Corp Reversible pump-motor assembly for a dishwasher
US3370608A (en) * 1966-08-12 1968-02-27 Whirlpool Co Liquid handling apparatus with pump means having mount and seal
US3583835A (en) * 1969-07-17 1971-06-08 Whirlpool Co Dishwasher motor mounting
US4476886A (en) * 1981-12-15 1984-10-16 Kamyr Ab Affixation of a pump to a tank

Also Published As

Publication number Publication date
CH276092A (fr) 1951-06-30
FR960138A (enMihai) 1950-04-13
GB625640A (en) 1949-06-30

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