US20130287561A1 - Pump - Google Patents

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Publication number
US20130287561A1
US20130287561A1 US13/884,568 US201113884568A US2013287561A1 US 20130287561 A1 US20130287561 A1 US 20130287561A1 US 201113884568 A US201113884568 A US 201113884568A US 2013287561 A1 US2013287561 A1 US 2013287561A1
Authority
US
United States
Prior art keywords
pump
rotor
guide elements
pump chamber
pump according
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.)
Abandoned
Application number
US13/884,568
Other languages
English (en)
Inventor
Volker Block
Tobias Albert
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau GmbH
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 EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Assigned to E.G.O. ELEKTRO-GERAETEBAU GMBH reassignment E.G.O. ELEKTRO-GERAETEBAU GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BLOCK, VOLKER, ALBERT, TOBIAS
Publication of US20130287561A1 publication Critical patent/US20130287561A1/en
Abandoned legal-status Critical Current

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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
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers 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
    • F04D29/58—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

Definitions

  • the invention relates to a pump, in particular to a liquid pump, which comprises a rotor or an impeller in a pump housing.
  • a liquid pump which comprises a pump housing having a rotor or impeller arranged therein.
  • a heating element is provided at the exterior wall of the pump chamber or of the pump housing.
  • WO 2010/034488 A1 describes another liquid pump including a rotor or impeller in a pump housing.
  • a heating element can be provided in a pump chamber of the pump housing, or as an alternative also externally on a pump chamber wall.
  • the rotor comprises a central inlet directed towards said rotor in axial direction.
  • An outlet from the pump housing is provided on the outer periphery of the pump chamber wall in radial direction.
  • the object underlying the present invention is to provide an aforementioned pump by means of which problems of the prior art can be prevented and in particular by means of which a very efficiently-working pump can be provided that can be produced by simple ways and means.
  • the pump housing comprises a pump chamber including a pump bottom, a pump chamber wall as well as a cover thereon.
  • the rotor rotates above the pump bottom, advantageously at a small distance thereto.
  • the pump chamber wall extends around the rotor, advantageously at a certain distance thereto, and comprises a heating means.
  • An inlet towards the rotor or the pump chamber is provided centrally and in axial direction towards the rotor.
  • An outlet from the pump housing or the pump chamber is provided on the outer periphery of the pump housing or of the pump chamber wall.
  • guide elements are provided at the pump bottom which are arranged radially outside of the rotor, i.e. surrounding the latter.
  • the advantage of said guide elements is that they guide the liquid current inside the pump in an especially well manner, in particular towards a pump chamber wall heated by means of the heating means.
  • the guide elements can cause that the number of rotations or circulations of the water along the pump chamber wall and thus along the heating means is increased or that an additional rotation of the water inside the pump along the heated pump chamber wall takes place, respectively.
  • the pump chamber wall is flown against flatly and, so to say, with minimized transition, a current rupture can be prevented, wherein the angle is supposed to be very flat or acute by means of the configuration of the guide elements.
  • the liquid current advantageously flows along the pump chamber wall towards the outlet.
  • the guide elements are not only provided at the pump bottom, but even arranged thereon or fixed thereto.
  • the pump bottom can be configured integrally and in one piece with the guide elements thereon. In this case, production in one piece from plastics lends itself. This way, indeed the production of the pump bottom is slightly more elaborate, however, an additional assembly step for the guide elements can be dispensed with.
  • the position of the guide elements in relation to the rotor, which can also be supported at the pump bottom or at least be supported with reference thereto can be improved or configured more exactly. This can increase the efficiency of the pump.
  • Another advantage of such guide elements, besides the increased efficiency or heating effect of the pump is that the noise generation inside the pump is reduced because of a current guided in a better manner.
  • the guide elements can be configured in a curved manner in radial direction. In this case, they can be bent or curved in the rotation direction of the rotor. Thus, they can advantageously have the form of so-called guide blades for a particularly favorable guiding of the liquid current.
  • the guide elements reach almost as far as up to the pump chamber wall.
  • the internal face of the pump chamber wall is flown against as precisely as possible.
  • a distance of a few millimeters up to one or two centimeters can be sufficient.
  • the guide elements can approach the rotor or impeller relatively closely.
  • a distance can be a few millimeters.
  • the rotor can be slightly more embedded into the pump bottom than lower or radially inner regions of the guide elements.
  • This can in particular apply to a rotor bottom part so that rotor blades extending on the rotor bottom part are quasi continuously continued in their course by the guide elements.
  • This continuation of the course applies to both the curvature along the rotation direction of the rotor and any other curvature.
  • Said curvature can also be present such that both the rotor blades and the guide elements extend away from the pump bottom in a bent or curved course as from a certain point. Up to said point, the rotor blades can be curved as from a rotor central region downwards towards the pump bottom.
  • the pump chamber including the cover on top or its sealing extends upwards almost up to the rotor, namely into the direction towards the pump bottom.
  • the cover of the pump is the region which limits the pump chamber around the inlet upwards or which is located inside the pump chamber wall, respectively.
  • the cover partially is below the topmost region of the rotor, preferably in the rotor central region thereof, so that the cover slightly follows the course of the rotor with its shape. Towards the outside, the cover bends away from the rotor and rises far above said rotor or the pump bottom in the direction towards the pump chamber wall.
  • Said bending of the cover away from the rotor can advantageously be effected approximately at the external diameter of the rotor.
  • the cover ascends strongly again and releases a certain space above said guide elements, which space can be used by the liquid current to stream along the pump chamber wall.
  • guide elements Approximately three to twenty of such guide elements can be provided at the pump.
  • guide elements there are six to eight guide elements. It is possible to provide as many rotor blades as guide elements. However, this is not mandatory, in particular also more guide elements than rotor blades can be provided.
  • the outlet of the pump chamber can be arranged on the radial outer periphery of the pump chamber. Said outlet can be formed by means of a course of the pump chamber that ascends more and more upwards away from the pump bottom.
  • the pump chamber has a ring-shape, since radially inwards, the cover of the pump chamber extends obliquely upwards.
  • the outlet can lead out of the pump chamber in rotation direction or circumferential direction, quasi as tangential output of the liquid.
  • the pump chamber wall is configured integrally or in one piece with the heat element thereon. If, here, a shock or the like can be prevented into the circumferential direction, the liquid can stream along a smooth surface and there will not be so many swirls. Indeed, compared to a swirled liquid current, the heat transfer slightly deteriorates. However, this can easily be counterbalanced in that especially also the guide elements can cause an additional circulation of the liquid current along the heated pump chamber wall so that a corresponding heat transfer or heating of the liquid can take place.
  • FIG. 1 a section through a pump according to the invention
  • FIG. 2 an oblique plane view of a partially disassembled pump or a view into the housing thereof
  • FIG. 3 a plane view of the illustration according to FIG. 2 .
  • a pump 11 is shown, which can be used particularly well for a dishwasher or a washing machine.
  • the pump 11 comprises a pump housing 12 , the course of which can be seen from the checked and hatched illustration.
  • a motor 14 for driving the pump 11 is arranged in or on a housing bottom 13 .
  • a cover 15 of the pump housing 12 is configured with a depression 15 ′ extending from outside to downwards inside, which depression circumferentially has an approximately constant distance to the housing bottom 13 .
  • Inside the depression 15 ′ there is an inlet tube 16 which is formed integrally to the cover 15 .
  • Said tube is arranged exactly centrally above the dot-dashed central longitudinal axis of the pump 11 , along which also a rotational axis of the motor 14 is running.
  • the housing bottom 13 and the cover 15 are interconnected by means of a side wall 17 or said three parts essentially form the pump housing 12 .
  • the side wall 17 rests against the housing bottom 13 and the cover 15 in a sealed manner by means of multiple sealings 18 .
  • the side wall 17 is configured as heating element.
  • it advantageously consists of a support material such as metal, in particular stainless steel, where appropriate alternatively of temperature-resistant plastic.
  • a heating element is applied in a planar manner which can be effected, if applicable, as usual and with an insulation layer underneath.
  • this is effected at the exterior side facilitating an electrical connection and reducing insulation problems.
  • the heating elements can advantageously be applied using thick film technology, which is generally known to the person skilled in the art and which will therefore not be explained in more detail here.
  • an impeller 20 is supported as rotor on a shaft of the motor 14 , the shape of which impeller is also known per se.
  • Said impeller comprises impeller blades 21 which cannot be seen very well in the sectional view of FIG. 1 , which is why reference is made to the oblique view of FIG. 2 .
  • the upper edge thereof gradually extends upwards in the circumferential direction as far as up to the elevation 15 ′′. Said elevation then merges into an outlet tube 19 as generally known per se from such impeller pumps.
  • the three parts of the pump housing 12 are held together via two external connectors 22 . According to the illustrations in FIGS. 2 and 3 , four such connectors 22 are provided.
  • the seven guide elements 24 are integrally formed to the housing bottom 13 , in particular injection-molded. This is not a problem in case of a production of plastics.
  • the elongate and curved or bent shape of the guide elements 24 can also well be seen from the FIGS. 2 and 3 . Towards the inside, they extend almost up to the impeller 20 , and towards the outside they have a slight distance to the side wall 17 , for example several millimeters. In this case, it is obvious that seven guide elements 24 are provided and five impeller blades 21 . The latter are shown in the plane view with dashed lines.
  • FIG. 3 shows that the curvature of the impeller blades 21 is inverse to the curvature of the guide elements 24 . However, this is also generally known to the person skilled in the art.
  • the guide elements 24 are configured such that in the region towards the impeller 20 , they have approximately the height of said blades or slightly surpass the height of the impeller blades 21 .
  • the height of the guide blades can vary in the course of the blades, it can, for example, decrease towards the outside and even become zero, if appropriate.
  • the housing bottom 13 in the region the guide elements 24 rest on it or are integrally shaped thereto extends upwards towards the outside, that is extending upwards outside of the impeller 20 .
  • a transport of the water supplied by the pump 11 upwards is facilitated or effected.
  • the water supplied effects multiple circulations inside the pump housing 12 before it is transported that high that it leaves the pump 11 again through the elevation 15 ′ and the outlet tube 19 .
  • a kind of deflection plate helps to transport the water upwards. However, said plate does not contribute to the number of circulations of the water.
  • the interior of the pump housing actually essentially forms a circular ring-type volume.
  • the aforementioned guide elements 24 are of major importance. Said elements additionally put the water into circulation and direct it towards the side wall 17 in the aforementioned flat angle. Thus, the result is a very good and rapid nestled current. This can hardly be achieved that well only by means of the impeller 20 alone or the impeller blades 21 thereof.
  • the additional advantage according to the invention of the preferred integral molding of the guide elements 24 to the housing bottom 13 is the simpler producibility, since in this case the housing bottom 13 can be produced as injection molded part entirely.
  • the guide elements 24 are also fixed to the housing bottom 13 in a significantly more stable manner.
  • they can be provided with smooth transitions and without gaps or the like at the housing bottom 13 , so that here the liquid current can be guided as good as possible and to the desired extent.
  • the impeller 20 being embedded slightly more into the housing bottom 12 according to FIG. 1 , it can be achieved that radially outside thereof, the housing bottom 13 is guided outwards exactly in the lower regions of the impeller blades 21 . This way, the liquid current can likewise be guided most advantageously.
  • the side wall 17 can, as can be seen from FIGS. 2 and 3 , be configured as closed circular ring, that is to say without a joint or the like.
  • Said wall can either be composed of a seamless tube or been cut off from a longer tube of such type.
  • it can be bent from a metal sheet strip, the end edges of which are connected as butt joint, however smooth or in a manner, that the abutting is closed and smoothened afterwards.
  • the subsequent application of the heating device thereon is not a problem, since mainly also thick film heating elements can be applied on curved faces by means of corresponding printing methods.

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  • 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)
US13/884,568 2010-11-10 2011-11-10 Pump Abandoned US20130287561A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010043727.1 2010-11-10
DE102010043727A DE102010043727A1 (de) 2010-11-10 2010-11-10 Pumpe
PCT/EP2011/069810 WO2012062839A1 (fr) 2010-11-10 2011-11-10 Pompe

Publications (1)

Publication Number Publication Date
US20130287561A1 true US20130287561A1 (en) 2013-10-31

Family

ID=44913306

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/884,568 Abandoned US20130287561A1 (en) 2010-11-10 2011-11-10 Pump

Country Status (6)

Country Link
US (1) US20130287561A1 (fr)
EP (1) EP2638296B1 (fr)
CN (1) CN103477085B (fr)
DE (1) DE102010043727A1 (fr)
PL (1) PL2638296T3 (fr)
WO (1) WO2012062839A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140369824A1 (en) * 2013-06-13 2014-12-18 Johnson Electric S.A. Circulation Pump
US20170027081A1 (en) * 2015-07-20 2017-01-26 Asia Vital Components Co., Ltd. Liquid-cooling device and system thereof
US9771950B2 (en) 2013-01-10 2017-09-26 E.G.O Elektro-Geraetebau Gmbh Impeller pump
US10260505B2 (en) 2013-06-14 2019-04-16 E.G.O. Elektro-Gerätebau GmbH Pump
US11015616B2 (en) 2016-05-10 2021-05-25 BSH Hausgeräte GmbH Liquid heating pump for conveying and heating liquid in a water-bearing domestic appliance

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013211556A1 (de) * 2013-06-19 2014-12-24 E.G.O. Elektro-Gerätebau GmbH Heizeinrichtung für eine Pumpe und Pumpe
DE102015218120B4 (de) 2015-09-21 2021-02-11 E.G.O. Elektro-Gerätebau GmbH Verfahren zum Betrieb einer Heizeinrichtung zum Erhitzen von Wasser , Heizeinrichtung und Geschirrspülmaschine
ES2751548T3 (es) 2015-09-21 2020-04-01 Ego Elektro Geraetebau Gmbh Dispositivo de calefacción para calentar agua y método para la operación de dicho dispositivo de calefacción
DE102015218121A1 (de) 2015-09-21 2017-03-23 E.G.O. Elektro-Gerätebau GmbH Heizeinrichtung zum Erhitzen von Wasser und Verfahren zum Betrieb einer solchen Heizeinrichtung
CN105570144B (zh) * 2015-12-17 2018-03-23 广东威灵电机制造有限公司 离心泵和用于离心泵的导流件
CN107288929A (zh) * 2016-04-11 2017-10-24 广东顺德思客乐施电器科技有限公司 区分叶轮腔和加热腔的洗碗机水泵
DE102016118860A1 (de) 2016-10-05 2018-04-05 Ebm-Papst Mulfingen Gmbh & Co. Kg Heizvorrichtung
CN109595177A (zh) * 2017-09-30 2019-04-09 三花亚威科电器设备（芜湖）有限公司 泵
CN108194422B (zh) * 2018-02-10 2020-08-14 佛山市顺德区美的洗涤电器制造有限公司 集热泵和洗碗机
CN108331785B (zh) * 2018-02-10 2020-05-22 佛山市顺德区美的洗涤电器制造有限公司 集热泵和洗碗机
CN108194423B (zh) * 2018-02-10 2020-10-09 佛山市顺德区美的洗涤电器制造有限公司 集热泵和洗碗机
DE102018213869B4 (de) * 2018-08-17 2020-03-05 E.G.O. Elektro-Gerätebau GmbH Heizeinrichtung und Verfahren zum Betrieb einer Heizeinrichtung
CN110107504B (zh) * 2019-05-20 2021-11-19 佛山市顺德区美的洗涤电器制造有限公司 加热泵和洗碗机
CN110552893A (zh) * 2019-09-03 2019-12-10 广东美的白色家电技术创新中心有限公司 加热泵及具有其的洗碗机或洗衣机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4812108A (en) * 1986-09-25 1989-03-14 Seikow Chemical Engineering & Machinery Ltd. Magnet pump
US20080014082A1 (en) * 2006-07-12 2008-01-17 Katsutoshi Kobayashi Multi Stage Diffuser Pump

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2631084B1 (fr) * 1988-05-09 1994-03-11 Alsthom Pompe centrifuge
JP3153409B2 (ja) * 1994-03-18 2001-04-09 株式会社日立製作所 遠心圧縮機の製作方法
EP1201933B1 (fr) 2000-10-25 2006-03-08 Eichenauer Heizelemente GmbH & Co.KG Boîtier de pompe avec réchauffeur du fluide intégré
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
ES2351271B1 (es) * 2009-01-26 2011-11-15 Coprecitec, S.L. Bomba de circulación de fluido adaptada a un aparato electrodoméstico.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4812108A (en) * 1986-09-25 1989-03-14 Seikow Chemical Engineering & Machinery Ltd. Magnet pump
US20080014082A1 (en) * 2006-07-12 2008-01-17 Katsutoshi Kobayashi Multi Stage Diffuser Pump

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9771950B2 (en) 2013-01-10 2017-09-26 E.G.O Elektro-Geraetebau Gmbh Impeller pump
US20140369824A1 (en) * 2013-06-13 2014-12-18 Johnson Electric S.A. Circulation Pump
US9624945B2 (en) * 2013-06-13 2017-04-18 Johnson Electric S.A. Circulation pump
US10260505B2 (en) 2013-06-14 2019-04-16 E.G.O. Elektro-Gerätebau GmbH Pump
US20170027081A1 (en) * 2015-07-20 2017-01-26 Asia Vital Components Co., Ltd. Liquid-cooling device and system thereof
US9807906B2 (en) * 2015-07-20 2017-10-31 Asia Vital Components Co., Ltd. Liquid-cooling device and system thereof
US11015616B2 (en) 2016-05-10 2021-05-25 BSH Hausgeräte GmbH Liquid heating pump for conveying and heating liquid in a water-bearing domestic appliance

Also Published As

Publication number Publication date
EP2638296A1 (fr) 2013-09-18
CN103477085A (zh) 2013-12-25
DE102010043727A1 (de) 2012-05-10
EP2638296B1 (fr) 2016-06-29
CN103477085B (zh) 2016-09-07
PL2638296T3 (pl) 2016-12-30
WO2012062839A1 (fr) 2012-05-18

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Date Code Title Description
AS Assignment

Owner name: E.G.O. ELEKTRO-GERAETEBAU GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BLOCK, VOLKER;ALBERT, TOBIAS;SIGNING DATES FROM 20130527 TO 20130528;REEL/FRAME:030730/0039

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION