EP1787567A2 - Dishwasher pump - Google Patents

Dishwasher pump Download PDF

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Publication number
EP1787567A2
EP1787567A2 EP06123977A EP06123977A EP1787567A2 EP 1787567 A2 EP1787567 A2 EP 1787567A2 EP 06123977 A EP06123977 A EP 06123977A EP 06123977 A EP06123977 A EP 06123977A EP 1787567 A2 EP1787567 A2 EP 1787567A2
Authority
EP
European Patent Office
Prior art keywords
volute
pump
rigid
impeller
disc
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.)
Withdrawn
Application number
EP06123977A
Other languages
German (de)
French (fr)
Other versions
EP1787567A3 (en
Inventor
Maurizio I.R.C.A. S.p.A Industria Resistenze Corazzate E Affini Biasi
Andrea I.R.C.A. S.p.A Industria Resistenze Corazzate E Affini Virzi
Roberto I.R.C.A. S.p.A Industria Resistenze Corazzate E Affini Colombo
Duilio I.R.C.A. S.p.A Industia Resistenze Corazzate E Affini Capraro
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.)
IRCA SpA Industria Resistenze Corazzate e Affini
Original Assignee
IRCA SpA Industria Resistenze Corazzate e Affini
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 IRCA SpA Industria Resistenze Corazzate e Affini filed Critical IRCA SpA Industria Resistenze Corazzate e Affini
Publication of EP1787567A2 publication Critical patent/EP1787567A2/en
Publication of EP1787567A3 publication Critical patent/EP1787567A3/en
Withdrawn legal-status Critical Current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
    • A47L15/42—Details
    • A47L15/4285—Water-heater arrangements
    • 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

Definitions

  • the present invention relates to a dishwasher pump provided with a heating element.
  • Dishwasher pumps provided with a heating element are known.
  • a first known type of pump comprises essentially a volute housing an impeller operated by an electric motor, and a resistance element housed inside the volute.
  • the resistance element is positioned on the outer perimeter of the volute.
  • An object of the invention is to provide an improved pump presenting increased heat transfer between the water and the resistance element, while maintaining at a minimum, or reducing, the pressure drop undergone by the water in passing through the pump.
  • the dishwasher pump comprises substantially a volute 2 internally housing an impeller 4 rigid with the shaft of an electric motor (not shown in the drawings).
  • the volute 2 is provided with an intake conduit 6 and a discharge conduit 8, and is closed by a baffle 10 provided with a hole 12 which communicates with the chamber 14 housing the impeller 4.
  • a diffuser disc 16 provided with fingers and housed in a chamber 20 to which the pump intake conduit 6 is connected.
  • Said chamber presents a substantially stepped perimetral configuration to externally support an annular resistance element 22.
  • the pump of the invention operates in the following manner.
  • the water then enters the conduit 12 to be then urged by the impeller 4 into the delivery conduit 8.
  • the disc 16 is rigid with the shaft 24 with which the impeller blades are rigid. In this manner the water entering through the intake conduit 6 and depositing on the disc is urged by centrifugal force against the annular wall on which the resistance element 22 rests, to undergo heating. It then grazes the disc, from which it descends through the hole 12 to enter the chamber 14 of the volute 2 and be then circulated towards the delivery.
  • the disc gives a suitable rotary movement to the water descending towards the impeller, to facilitate the handling of the flow by the impeller 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cookers (AREA)

Abstract

A dishwasher pump provided with a heating element, comprising a volute (2) the interior of which houses an impeller (4) rigid with the shaft of an electric motor, the volute (2) being provided with an intake conduit (6) and delivery conduit (8) and being closed by a baffle (10) provided with a hole (12), characterised in that in a position overlying said baffle (10) there is provided a disc (16) which feeds the water, entering through the intake conduit (6), towards the lateral surface of the volute with which the heating element (22) is externally rigid.

Description

  • The present invention relates to a dishwasher pump provided with a heating element.
  • Dishwasher pumps provided with a heating element are known.
  • A first known type of pump comprises essentially a volute housing an impeller operated by an electric motor, and a resistance element housed inside the volute.
  • In another type of pump the resistance element is positioned on the outer perimeter of the volute.
  • An object of the invention is to provide an improved pump presenting increased heat transfer between the water and the resistance element, while maintaining at a minimum, or reducing, the pressure drop undergone by the water in passing through the pump.
  • This and other objects which will be apparent from the ensuing description are attained according to the invention by a dishwasher pump provided with a heating element as claimed in claim 1.
  • The present invention is further clarified hereinafter with reference to the accompanying drawings, in which:
    • Figure 1 is a perspective sectional view of a dishwasher pump, and
    • Figure 2 shows a variant thereof.
  • As can be seen from the figures, the dishwasher pump according to the invention comprises substantially a volute 2 internally housing an impeller 4 rigid with the shaft of an electric motor (not shown in the drawings).
  • The volute 2 is provided with an intake conduit 6 and a discharge conduit 8, and is closed by a baffle 10 provided with a hole 12 which communicates with the chamber 14 housing the impeller 4.
  • In a position overlying said baffle 10 there is a diffuser disc 16 provided with fingers and housed in a chamber 20 to which the pump intake conduit 6 is connected.
  • Said chamber presents a substantially stepped perimetral configuration to externally support an annular resistance element 22.
  • The pump of the invention operates in the following manner.
  • Water enters through the intake conduit and grazes the disc 16, to then descend below the volute closure. During its descent the water comes into contact with the annular surface on which the resistance element 22 rests, and becomes heated. The fingers 18 give a suitable rotary movement to the water descending towards the impeller, to facilitate the handling of the flow by the impeller 4.
  • The water then enters the conduit 12 to be then urged by the impeller 4 into the delivery conduit 8.
  • In the embodiment shown in Figure 2, the disc 16 is rigid with the shaft 24 with which the impeller blades are rigid. In this manner the water entering through the intake conduit 6 and depositing on the disc is urged by centrifugal force against the annular wall on which the resistance element 22 rests, to undergo heating. It then grazes the disc, from which it descends through the hole 12 to enter the chamber 14 of the volute 2 and be then circulated towards the delivery.
  • The disc gives a suitable rotary movement to the water descending towards the impeller, to facilitate the handling of the flow by the impeller 4.
  • From the aforegoing it is apparent that the dishwasher pump of the invention presents numerous advantages, and in particular:
    • it presents increased heat transfer between the water and the resistance element,
    • it decreases pressure drop.

Claims (3)

  1. A dishwasher pump provided with a heating element, comprising a volute (2) the interior of which houses an impeller (4) rigid with the shaft of an electric motor, the volute (2) being provided with an intake conduit (6) and delivery conduit (8) and being closed by a baffle (10) provided with a hole (12), characterised in that in a position overlying said baffle (10) there is provided a disc (16) which feeds the water, entering through the intake conduit (6), towards the lateral surface of the volute with which the heating element (22) is externally rigid.
  2. A pump as claimed in claim 1, characterised in that the diffuser disc (16) is provided with dispersion fingers (18).
  3. A dishwasher pump as claimed in claim 1, characterised in that the diffuser disc (16) is rigid with the impeller shaft.
EP06123977A 2005-11-17 2006-11-14 Dishwasher pump Withdrawn EP1787567A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITVE20050037 ITVE20050037U1 (en) 2005-11-17 2005-11-17 PUMP FOR DISHWASHER PROVIDED WITH HEATING ELEMENT.-

Publications (2)

Publication Number Publication Date
EP1787567A2 true EP1787567A2 (en) 2007-05-23
EP1787567A3 EP1787567A3 (en) 2007-08-08

Family

ID=37998150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06123977A Withdrawn EP1787567A3 (en) 2005-11-17 2006-11-14 Dishwasher pump

Country Status (2)

Country Link
EP (1) EP1787567A3 (en)
IT (1) ITVE20050037U1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7503755B2 (en) * 2002-12-30 2009-03-17 Industrial Technology Research Institute Baffle plate assembly for a compressor
WO2010034488A1 (en) * 2008-09-25 2010-04-01 E.G.O. Elektro-Gerätebau GmbH Pump for fluids
ITRM20100363A1 (en) * 2010-07-06 2012-01-07 I R C A S P A Ind Resistenze Corazzate WATER HEATING SYSTEM, IN PARTICULAR FOR DISHWASHER
CN105134661A (en) * 2015-09-29 2015-12-09 广东威灵电机制造有限公司 Heating diversion mechanism
WO2016008286A1 (en) * 2014-07-15 2016-01-21 Foshan Shunde Midea Washing Appliances Mfg. Co., Ltd. Heat pump and dishwasher comprising the same
CN105370622A (en) * 2015-09-29 2016-03-02 广东威灵电机制造有限公司 Fluid heating pumping device
EP3358197A4 (en) * 2015-09-29 2018-10-03 Foshan Welling Washer Motor Manufacturing Co., Ltd Centrifugal pump
CN109681473A (en) * 2019-03-04 2019-04-26 贝克电热科技（深圳）有限公司 A kind of fluid pump and household electrical appliance

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20308489U1 (en) * 2002-05-29 2003-10-02 Aweco Appliance Sys Gmbh & Co Appliance
US20050201878A1 (en) * 2004-03-05 2005-09-15 Hans-Juergen Kraffzik Centrifugal pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20308489U1 (en) * 2002-05-29 2003-10-02 Aweco Appliance Sys Gmbh & Co Appliance
US20050201878A1 (en) * 2004-03-05 2005-09-15 Hans-Juergen Kraffzik Centrifugal pump

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7503755B2 (en) * 2002-12-30 2009-03-17 Industrial Technology Research Institute Baffle plate assembly for a compressor
WO2010034488A1 (en) * 2008-09-25 2010-04-01 E.G.O. Elektro-Gerätebau GmbH Pump for fluids
ITRM20100363A1 (en) * 2010-07-06 2012-01-07 I R C A S P A Ind Resistenze Corazzate WATER HEATING SYSTEM, IN PARTICULAR FOR DISHWASHER
WO2016008286A1 (en) * 2014-07-15 2016-01-21 Foshan Shunde Midea Washing Appliances Mfg. Co., Ltd. Heat pump and dishwasher comprising the same
CN105317740A (en) * 2014-07-15 2016-02-10 芜湖美的洗涤电器制造有限公司 Heat collecting pump for dish washing machine
US20170209019A1 (en) * 2014-07-15 2017-07-27 Foshan Shunde Midea Washing Appliances Mfg. Co. Ltd. Heat pump and dishwasher comprising the same
CN105317740B (en) * 2014-07-15 2018-03-13 佛山市顺德区美的洗涤电器制造有限公司 Heat-collecting pump for dish-washing machine
US10405729B2 (en) * 2014-07-15 2019-09-10 Foshan Shunde Midea Washing Appliances Mfg. Co., Ltd. Heat pump and dishwasher comprising the same
CN105134661A (en) * 2015-09-29 2015-12-09 广东威灵电机制造有限公司 Heating diversion mechanism
CN105370622A (en) * 2015-09-29 2016-03-02 广东威灵电机制造有限公司 Fluid heating pumping device
EP3358197A4 (en) * 2015-09-29 2018-10-03 Foshan Welling Washer Motor Manufacturing Co., Ltd Centrifugal pump
CN109681473A (en) * 2019-03-04 2019-04-26 贝克电热科技（深圳）有限公司 A kind of fluid pump and household electrical appliance

Also Published As

Publication number Publication date
ITVE20050037U1 (en) 2007-05-18
EP1787567A3 (en) 2007-08-08

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