WO2006027331A1 - Volute pour pompe centrifuge - Google Patents

Volute pour pompe centrifuge Download PDF

Info

Publication number
WO2006027331A1
WO2006027331A1 PCT/EP2005/054279 EP2005054279W WO2006027331A1 WO 2006027331 A1 WO2006027331 A1 WO 2006027331A1 EP 2005054279 W EP2005054279 W EP 2005054279W WO 2006027331 A1 WO2006027331 A1 WO 2006027331A1
Authority
WO
WIPO (PCT)
Prior art keywords
volute
impeller
intake duct
liquid flow
resistive element
Prior art date
Application number
PCT/EP2005/054279
Other languages
English (en)
Inventor
Nathaniel Mulcahy
Original Assignee
Emerson Appliance Motors Europe S.R.L.
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 Emerson Appliance Motors Europe S.R.L. filed Critical Emerson Appliance Motors Europe S.R.L.
Publication of WO2006027331A1 publication Critical patent/WO2006027331A1/fr

Links

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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
    • 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
    • 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
    • F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes

Definitions

  • the heating members arranged inside the volute allow the formation of a plurality of layers of liquid, in particular water, inside the hollow body, having a different temperature and density, and provide the movement of the liquid from the intake duct towards the delivery duct with a spinning (or helical) component.
  • Figure 1 is an exploded view of a first embodiment of the volute according to the invention
  • Figure 2 is a cross-sectional view of the intake duct of the volute shown in Figure 1, along the line II-II;
  • Figure 2a is a variation of embodiment of the intake duct shown in Figure 2;
  • Figure 4 is a schematic illustration of a particular spatial arrangement of thick-film heating devices inside the volute
  • Figure 7 is an exploded view, partly cross-sectioned, similar to Figure 6, of a volute which has thick-film heating devices inside its hollow body;
  • Figure 8 is a transversely sectioned view of a further embodiment of a volute according to the invention.
  • 10 denotes generally a rotary hydraulic pump of the centrifugal type, in particular for electric household appliances and the like, comprising a volute 12, an impeller 14, a bottom closing element 16 and an electric motor (not shown) .
  • the volute 12 which is for example made of plastic or aluminium or alloys thereof, comprises a hollow body 18 having an axial intake duct 20 and a tangential delivery duct 22.
  • the pump 10 draws a liquid flow from the intake duct 20 into the hollow body 18 as a result of rotation of the impeller 14 actuated by the electric motor.
  • the liquid arriving from the intake duct 20 is pushed by the effect of the centrifugal force towards the periphery of the hollow body 18 and is directed towards the delivery duct 22.
  • the heating members may be inserted inside the intake duct 20 and/or inside the hollow body 18.
  • cross-section of the sheath 30 has been shown with a circular form, but it may equally well be square or triangular or have any prismatic cross-section.
  • the spiral-shaped element 26 may be fixed, for example welded or glued, to a support base-piece made of metallic or thermoplastic material, in turn fixed to the duct 20.
  • the resistive element 26 has terminal sections 28 which pass (in a fluid-tight manner) through the wall of the duct 20 and emerge outside the latter so that they may be connected to an electric power supply and control circuit (not shown) . In this way, during operation the water flowing into the intake duct 20 in the direction of the hollow body 18 is heated by the heat generated by the resistive element 26 owing to the Joule effect.
  • the spiral-shaped resistive element 26 has an inclination ⁇ and a pitch L which are predefined so as to provide the liquid entering the hollow body 18 with an angular velocity component in the same direction as the rotational velocity A of the impeller 14. This condition, combined with heating of the liquid, allows a partial reduction in the turbulence affecting the liquid flow from the intake duct 20, thus allowing an increase in the delivery and a consequent decrease in the risk of cavitation.
  • the internal wall of the intake duct 20 is shown with a threaded profile 32 projecting internally.
  • the heating device 34 which is of a type known per se, comprises a substantially plate-like support 36 with a main surface 38 and a superficial resistive element 40 deposited using the thick-film technique.
  • the plate-like support 36 may be made, for example, of ceramic material.
  • the thick-film resistor 40 is connected to insulated conductors 42 which allow heating thereof due to the passage of current and which, in their connection portions, are electrically insulated and waterproofed with a layer of synthetic resin 44.
  • a plurality of thick-film resistive heating elements of the type according to Figure 3, or the like, is conveniently arranged inside the intake duct 20 and/or inside the hollow body 18 of a volute 12, for example according to one of the arrangements which will now be described.
  • the deflecting surfaces 38 of the heating devices 34 lie in planes which are substantially parallel to radial directions transverse to the axis B-B and form an angle ⁇ with respect to the flow lines C, in particular directed towards the rear with respect to the direction of rotation A of the impeller 14.
  • Figure 5 is a variation of Figure 4 in which the deflecting surfaces 38 lie in planes intersecting radial directions transverse to the axis B-B. Therefore, the surfaces 38, in addition to having an inclination of angle ⁇ towards the rear, with respect to the direction of rotation A, are also rotated through an angle ⁇ with respect to the transverse radial directions passing through the bottom vertex of their radially outer side.
  • the deflecting surfaces 38 are able to deviate at least one portion of the liquid flow C such that the deviated flow has a velocity component in the same direction as the rotational velocity of the impeller 14. In this way, a spinning movement is imparted to the liquid coinciding with the direction of rotation A of the impeller 14, this helping achieve a reduction in the cavitation phenomena and an increase in the delivery of the pump 10.
  • Figure 6 shows a volute 12 comprising four heating devices 34 arranged inside the intake duct 20 and oriented as shown in Figure 4.
  • the heating devices 34 may be arranged both inside the intake duct 20 and inside the hollow body 18.
  • the use of a spiral-shaped resistive element 26 situated inside the intake duct 20 may be combined with the use of the heating devices 34 inside the hollow body 18.
  • Figures 8 and 9 show a partial variation of embodiment of a volute 12 according to the invention.
  • a plurality of fixed deflector vanes 46 which are angularly spaced, extends from the internal surface of the hollow body 18 of the volute 12.
  • These vanes 46 are preferably planar and moulded as one piece with the hollow body 18 of the volute 12; moreover, each fixed vane 46 lies in a plane which is substantially tangential to the distal end of a vane 24 of the impeller 14 when this vane 24 of the impeller 14 is situated at a minimum distance from the free end of the fixed vane 46.
  • This condition occurs simultaneously for all the fixed vanes 46 of the volute 12 according to Figure 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Selon l'invention, la volute (12) pour pompe (10) de type centrifuge comprend un corps creux (18) possédant une manche d'admission axiale (20) et une manche de distribution tangentielle (22), de manière à faire entrer et sortir respectivement un flux liquide (C). La volute (12) comporte également des éléments chauffants électriques associés (26, 34) capables de chauffer le flux liquide (C) entre la manche d'admission (20) et la manche de distribution (22). Les éléments chauffants (26, 34) sont conçus et disposés de telle manière qu'ils peuvent conférer, lors du fonctionnement, un mouvement rotatif au flux liquide (C) autour de l'axe (B-B) de la manche d'admission (20) et de la roue (14) de la pompe (10), dans la même direction que la rotation (A) conférée au flux liquide par la roue (14).
PCT/EP2005/054279 2004-09-08 2005-08-31 Volute pour pompe centrifuge WO2006027331A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000592A ITTO20040592A1 (it) 2004-09-08 2004-09-08 Chiocciola per una pompa centrifuga
ITTO2004A000592 2004-09-08

Publications (1)

Publication Number Publication Date
WO2006027331A1 true WO2006027331A1 (fr) 2006-03-16

Family

ID=35044838

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/054279 WO2006027331A1 (fr) 2004-09-08 2005-08-31 Volute pour pompe centrifuge

Country Status (2)

Country Link
IT (1) ITTO20040592A1 (fr)
WO (1) WO2006027331A1 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006136819A2 (fr) * 2005-06-23 2006-12-28 Otter Controls Ltd Appareil combine compose d'une pompe et d'un element chauffant
EP1870508A2 (fr) * 2006-06-21 2007-12-26 AWECO APPLIANCE SYSTEMS GmbH & Co. KG Pompe, en particulier pour machines domestiques utilisant de l' eau
DE102007017271A1 (de) * 2007-04-12 2008-10-16 BSH Bosch und Siemens Hausgeräte GmbH Pumpe mit Heizeinrichtung
DE102008050895A1 (de) * 2008-09-25 2010-04-01 E.G.O. Elektro-Gerätebau GmbH Pumpe für Fluide
DE102011003464A1 (de) * 2011-02-01 2012-04-26 E.G.O. Elektro-Gerätebau GmbH Heizeinrichtung für eine Pumpe und Pumpe
DE102012210554A1 (de) * 2012-06-22 2013-12-24 E.G.O. Elektro-Gerätebau GmbH Pumpe
DE102012218145A1 (de) * 2012-10-04 2014-04-24 E.G.O. Elektro-Gerätebau GmbH Impellerpumpe
ES2460369A1 (es) * 2012-11-12 2014-05-13 Coprecitec, S.L. Bomba de circulación de fluido adaptada para un aparato electrodoméstico
DE102013202346B3 (de) * 2013-02-13 2014-05-28 E.G.O. Elektro-Gerätebau GmbH Impellerpumpe
EP2495444B1 (fr) 2011-03-04 2015-07-01 E.G.O. ELEKTRO-GERÄTEBAU GmbH Pompe
US9145901B2 (en) 2011-04-15 2015-09-29 Johnson Electric S.A. Heating pump
WO2017101086A1 (fr) * 2015-12-17 2017-06-22 广东威灵电机制造有限公司 Pompe centrifuge
CN112648192A (zh) * 2019-10-12 2021-04-13 广东美的白色家电技术创新中心有限公司 加热泵及清洁装置
DE102012025758B3 (de) 2012-10-04 2021-12-02 E.G.O. Elektro-Gerätebau GmbH Impellerpumpe
EP3134653B1 (fr) * 2014-04-24 2024-03-06 Foshan Shunde Midea Washing Appliances Mfg. Co., Ltd. Pompe à chaleur et lave-vaisselle comprenant celle-ci

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19932033A1 (de) * 1998-07-10 2000-01-13 Kaco Gmbh Co Heizelement, Verfahren zu seiner Herstellung und Pumpe mit einem Heizelement
DE19852569A1 (de) * 1998-11-13 2000-05-18 Miele & Cie Umwälzpumpe, insbesondere für wasserführnde Haushaltgeräte
US20010042560A1 (en) * 1998-12-16 2001-11-22 Wolfgang Steck Heater for heating the dishwashing liquid in a dishwasher
US20020048513A1 (en) * 2000-10-25 2002-04-25 Martin Kleemann Pump with a heatable housing
DE10324626A1 (de) * 2002-05-29 2004-03-04 Aweco Appliance Systems Gmbh & Co. Kg Haushaltsmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19932033A1 (de) * 1998-07-10 2000-01-13 Kaco Gmbh Co Heizelement, Verfahren zu seiner Herstellung und Pumpe mit einem Heizelement
DE19852569A1 (de) * 1998-11-13 2000-05-18 Miele & Cie Umwälzpumpe, insbesondere für wasserführnde Haushaltgeräte
US20010042560A1 (en) * 1998-12-16 2001-11-22 Wolfgang Steck Heater for heating the dishwashing liquid in a dishwasher
US20020048513A1 (en) * 2000-10-25 2002-04-25 Martin Kleemann Pump with a heatable housing
DE10324626A1 (de) * 2002-05-29 2004-03-04 Aweco Appliance Systems Gmbh & Co. Kg Haushaltsmaschine

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006136819A3 (fr) * 2005-06-23 2007-06-14 Otter Controls Ltd Appareil combine compose d'une pompe et d'un element chauffant
WO2006136819A2 (fr) * 2005-06-23 2006-12-28 Otter Controls Ltd Appareil combine compose d'une pompe et d'un element chauffant
GB2427437B (en) * 2005-06-23 2010-11-10 Otter Controls Ltd Combined heater pump apparatus
EP1870508A2 (fr) * 2006-06-21 2007-12-26 AWECO APPLIANCE SYSTEMS GmbH & Co. KG Pompe, en particulier pour machines domestiques utilisant de l' eau
DE102006028913A1 (de) * 2006-06-21 2007-12-27 Aweco Appliance Systems Gmbh & Co. Kg Pumpe, insbesondere für wasserführende Haushaltsmaschinen
EP1870508A3 (fr) * 2006-06-21 2008-05-28 AWECO APPLIANCE SYSTEMS GmbH & Co. KG Pompe, en particulier pour machines domestiques utilisant de l' eau
US7965928B2 (en) 2006-06-21 2011-06-21 Aweco Appliance Systems Gmbh & Co. Kg Pump, in particular for water-bearing domestic appliances
US8245718B2 (en) 2007-04-12 2012-08-21 Bsh Bosch Und Siemens Hausgeraete Gmbh Pump having a heating device
DE102007017271A1 (de) * 2007-04-12 2008-10-16 BSH Bosch und Siemens Hausgeräte GmbH Pumpe mit Heizeinrichtung
DE102008050895A1 (de) * 2008-09-25 2010-04-01 E.G.O. Elektro-Gerätebau GmbH Pumpe für Fluide
DE102011003464A1 (de) * 2011-02-01 2012-04-26 E.G.O. Elektro-Gerätebau GmbH Heizeinrichtung für eine Pumpe und Pumpe
EP2495444B1 (fr) 2011-03-04 2015-07-01 E.G.O. ELEKTRO-GERÄTEBAU GmbH Pompe
US9145901B2 (en) 2011-04-15 2015-09-29 Johnson Electric S.A. Heating pump
US9470242B2 (en) 2012-06-22 2016-10-18 E.G.O. Elektro-Geraetebau Gmbh Pump
DE102012210554A1 (de) * 2012-06-22 2013-12-24 E.G.O. Elektro-Gerätebau GmbH Pumpe
DE102012218145A1 (de) * 2012-10-04 2014-04-24 E.G.O. Elektro-Gerätebau GmbH Impellerpumpe
DE102012218145B4 (de) 2012-10-04 2018-12-27 E.G.O. Elektro-Gerätebau GmbH Impellerpumpe
DE102012025758B3 (de) 2012-10-04 2021-12-02 E.G.O. Elektro-Gerätebau GmbH Impellerpumpe
EP2730788A3 (fr) * 2012-11-12 2014-09-24 Coprececitec, S.L. Pompe de circulation de fluides adaptée à un appareil ménager
ES2460369A1 (es) * 2012-11-12 2014-05-13 Coprecitec, S.L. Bomba de circulación de fluido adaptada para un aparato electrodoméstico
DE102013202346B3 (de) * 2013-02-13 2014-05-28 E.G.O. Elektro-Gerätebau GmbH Impellerpumpe
EP3134653B1 (fr) * 2014-04-24 2024-03-06 Foshan Shunde Midea Washing Appliances Mfg. Co., Ltd. Pompe à chaleur et lave-vaisselle comprenant celle-ci
WO2017101086A1 (fr) * 2015-12-17 2017-06-22 广东威灵电机制造有限公司 Pompe centrifuge
CN112648192A (zh) * 2019-10-12 2021-04-13 广东美的白色家电技术创新中心有限公司 加热泵及清洁装置
CN112648192B (zh) * 2019-10-12 2022-12-30 广东美的白色家电技术创新中心有限公司 加热泵及清洁装置

Also Published As

Publication number Publication date
ITTO20040592A1 (it) 2004-12-08

Similar Documents

Publication Publication Date Title
WO2006027331A1 (fr) Volute pour pompe centrifuge
US20100126534A1 (en) Pump having a heating device
JP6357534B2 (ja) ポンプ
US7965928B2 (en) Pump, in particular for water-bearing domestic appliances
US20130022455A1 (en) Pump
US9816527B2 (en) Pump with integrated heating element
CN110080988A (zh) 加热泵和洗碗机
US6224323B1 (en) Impeller of motor-driven fuel pump
JP4894438B2 (ja) 遠心ポンプ
US20130287561A1 (en) Pump
JP6395819B2 (ja) ポンプ
US11015616B2 (en) Liquid heating pump for conveying and heating liquid in a water-bearing domestic appliance
EP3134653B1 (fr) Pompe à chaleur et lave-vaisselle comprenant celle-ci
US20190128284A1 (en) Liquid heating pump for conveying and heating liquid in a household appliance which uses water
CN208203595U (zh) 泵
CN108194422A (zh) 集热泵和洗碗机
CN108194423A (zh) 集热泵和洗碗机
US20020192075A1 (en) Fan
CN106194837A (zh) 离心泵的泵壳、离心泵及洗碗机
CN114233641A (zh) 一种双流道散热水泵
EP4140386A1 (fr) Élément de guidage d'écoulement, pompe collectrice de chaleur et lave-vaisselle
CN111720338B (zh) 加热泵和电器
JP2012205419A (ja) モータ及びポンプ及び機器
CN220236675U (zh) 热风组件及烹饪器具
CN110307635A (zh) 可提高增压效果的燃气热水器

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase