EP1571348A2 - Pompe centrifuge - Google Patents

Pompe centrifuge Download PDF

Info

Publication number
EP1571348A2
EP1571348A2 EP05004187A EP05004187A EP1571348A2 EP 1571348 A2 EP1571348 A2 EP 1571348A2 EP 05004187 A EP05004187 A EP 05004187A EP 05004187 A EP05004187 A EP 05004187A EP 1571348 A2 EP1571348 A2 EP 1571348A2
Authority
EP
European Patent Office
Prior art keywords
pump
impeller
pump according
heating element
flow channel
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Withdrawn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
EP05004187A
Other languages
German (de)
English (en)
Other versions
EP1571348A3 (fr
Inventor
Hans-Jürgen Kraffzik
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.)
Aweco Appliance Systems GmbH and Co KG
Original Assignee
Aweco Appliance Systems GmbH and Co KG
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 claimed from DE102004011365A external-priority patent/DE102004011365A1/de
Priority claimed from DE102004048362A external-priority patent/DE102004048362A1/de
Application filed by Aweco Appliance Systems GmbH and Co KG filed Critical Aweco Appliance Systems GmbH and Co KG
Publication of EP1571348A2 publication Critical patent/EP1571348A2/fr
Publication of EP1571348A3 publication Critical patent/EP1571348A3/fr
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the invention relates to a centrifugal pump, in particular for Household machines according to the preamble of claim 1.
  • Such a housing form can be compared spiral-shaped pump housings, where the radius changed along the circumference, easier to manufacture, for example, by an injection molding process. Furthermore is such a pump with a compact outer shape can be produced, which accordingly also in cramped spatial Conditions can be used.
  • the object of the invention is a cylindrical To propose centrifugal pump, in which the efficiency of Pump over the prior art improved is.
  • an inventive invention radially symmetrical centrifugal pump characterized in that a the Impeller surrounding flow channel is provided, the increases along the circumference towards the outlet of the pump.
  • This measure can be the maximum flow and thus significantly increase the efficiency of the centrifugal pump. As a result, a smaller-sized centrifugal pump with corresponding savings in production and operation be used.
  • Radial symmetric or cylindrical is a pump housing in Meaning of this invention without regard to circumferential or tangential outlet, by nature the symmetrical shape disturbs.
  • the outer shape of the pump housing is in Essentially cylindrical.
  • the aforementioned Advantages of a basic radially symmetric shape, -d.h. the simpler manufacturing is in this embodiment further improved because with a cylindrical shape and the radius remains constant over the height.
  • the increase of Flow cross-section of the flow channel thereby causes that changes the axial extent of the flow channel becomes. This allows the realization of a special compact pump.
  • the flow channel provided with a sloping bottom.
  • the flow channel can the Flow conditions, especially at the transition into the Outlet be influenced.
  • An outward rising Inclination of this channel floor allows for example a sliding transition into the outlet without flow disturbing Offset.
  • the flow channel with the inside a circumferential entrance slit provided in a preferred embodiment is essentially a constant height having.
  • the impeller preferably with an increase in volume provided in the axial direction.
  • the pump wheel which by a upper and lower cover with intermediate Bucket elements has a certain internal volume is the more effective, the more liquid volume in the Impeller can be included.
  • the volume in the impeller as well as the shape of the impeller (especially the blade shape) determines the energy conversion in the impeller.
  • the Pump inlet provided with an inlet nozzle, which in a Inlet opening of the impeller protrudes. This will be the Inlet of the liquid to be pumped into the impeller streamlined improved. Lateral currents at the Impeller over are thereby prevented. The so-called Dead volume of the pump is kept small accordingly.
  • a pump according to the invention is advantageously provided with a Heating element provided.
  • a Heating element is doing preferably arranged so that it passes through a heat-conducting Wall of the pump housing is separated from the interior of the pump.
  • the heating element on the front side of the Pump housing to install.
  • a groove in the corresponding wall of the pump housing for example a front cover, are attached.
  • the flow channel not only the impeller, but also surrounds the heating element outside is ensures that the heating element or its inclusion in the pump housing over a very large contact surface and with large volume flow of the to be heated Cleaning liquid is flown. This results a good efficiency of the heating, by that For example, over 75% of their surface or at corresponding cross-sectional design over a still greater proportion in thermal contact with the cleaning fluid can be brought.
  • Heating element in the axial direction at least partially adjacent arranged on the impeller.
  • This way is a Flow channel feasible, such an axial Has extension that he both the impeller and the Heating element surrounds and the above-mentioned advantageous Flow of the heating element is made possible.
  • the heating element on the axial Inlet of the pump housing facing side of the impeller arranged. That way, from the other side the drive of the impeller be accomplished without that Drive and heating element or the connections of the Heating element disturbing effect.
  • the heating element is preferably at least partially annular.
  • a ring or Partial ring can be concentric on one end face of the Pump housing be attached so that the rotary Flow within the pump housing for a good Flow of the heating element or its inclusion in the Pump housing is usable.
  • the heating element also outside be lapped.
  • the heating element in the above-mentioned embodiment, in the heating element on the axial inlet of the Pump housing facing side of the impeller arranged Accordingly, the heating element at least encloses partially the axial inlet of the pump housing.
  • the heating element pointing side of the impeller to the profile of Heating element or its inclusion in the pump housing customized.
  • the pump 1 according to FIG. 1 comprises a cylindrical one Pump housing 2, mounted on the top of a lid 3 is.
  • the lid 3 may not be shown in Figure 1 Include heating element and this made of thermally conductive material, be made of metal, for example.
  • a pump impeller 4 In the interior of the pump housing 2 is a pump impeller 4, this essentially consists of an upper and a lower one Cover 5, 6 with interposed blades 7 consists. The blades 7 are bent and shaped so that upon rotation of the impeller 4, a corresponding annular flow the liquid in the impeller 4 is generated.
  • the impeller 4 is on the bottom with an axial Provided projection 8, which has a central bore 9 for Recording a drive shaft, not shown is provided.
  • the drive of the impeller 4 is thus of the heating element or the lid 3 opposite Side accomplished.
  • the top cover 5 has a central opening 10, in which projects into an inlet port 11.
  • An outlet 12 is in the illustration of Figure 3 behind the pump housing 2 attached in tangential direction.
  • the impeller 4 has an edge-side opening gap 13 on, the one about the same height lying Inlet gap 14 of a flow channel 15 according to the invention opposite.
  • the flow channel 15 extends in axial height up to a groove 16 for receiving the Heating element, so not only the impeller 4, but also the heating groove 16 on the outside of the flow channel in the 15th flowing liquid is flowed around.
  • FIG 1 is recognizable, is accordingly the heating groove 16 three sides and thus due to the greater height in comparison to the width of Edelungsnut 16 with significantly more than 75% of available contact area in contact with the im Inside the pump housing 2 located liquid.
  • the bottom 17 of the flow channel 15 is inclined at an angle formed on the outside rising. He still has one slight curvature on. This shape facilitates the Transition to the outlet 12, as above executed.
  • the lower cover 6 of the impeller 4 is curved so far, that they are clearly in the space 18 below the Entry gap 14 extends and thus this volume of the Pump housing 2 to increase the internal volume of the Impeller 4 uses.
  • the round curvature of the lower cover 6 again serves to improve the flow in the Inside the impeller 4, i. to guide the water to the entrance slit 14 of the flow channel 15th
  • the upper cover 5 is in its contour to the lid. 3 or the heating groove 16 adapted. By shaping the Top cover 5 is still sufficient Interspace 18, 19 between the upper cover 5 and the Heating groove 16 ensures. In this gap 18, 19 can therefore also a heat transfer to the there take place liquid located.
  • FIG. 2 essentially corresponds to FIG Based on Figure 1 described embodiment.
  • This representation is the transition 20 in the outlet 12 clearly recognizable, which is a receptacle 21 for a pressure sensor having.
  • Figure 1 in this Representation of a bent from a ring segment Heating rod formed inserted into the Schwarzungsnut 16 Heating element 22 recognizable.
  • a connection 23 of the heating element 22 results from an end-side upward bend of the Heating element 22.
  • the heating element 22 is positively connected to the heating groove 16 adapted and optionally there additionally heat-conducting, e.g. connected by a soldering contact.
  • FIG. 3 essentially corresponds the pump described with reference to Figure 2, wherein different thereof the bottom 24 of the outer circumferential flow channel 25th no longer obliquely inclined, but rather curved is.
  • the increase of the axial extent h, H of the However, flow channel 25 is also recognizable here as well, as the use of the below the entrance slit 26 to Available interior 27 for one Volume increase of the impeller 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP05004187A 2004-03-05 2005-02-25 Pompe centrifuge Withdrawn EP1571348A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102004011365A DE102004011365A1 (de) 2004-03-05 2004-03-05 Kreiselpumpe
DE102004011365 2004-03-05
DE102004048362A DE102004048362A1 (de) 2004-03-05 2004-10-01 Kreiselpumpe
DE102004048362 2004-10-01

Publications (2)

Publication Number Publication Date
EP1571348A2 true EP1571348A2 (fr) 2005-09-07
EP1571348A3 EP1571348A3 (fr) 2008-12-24

Family

ID=34751411

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05004187A Withdrawn EP1571348A3 (fr) 2004-03-05 2005-02-25 Pompe centrifuge

Country Status (2)

Country Link
US (1) US20050196274A1 (fr)
EP (1) EP1571348A3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004058593B4 (de) * 2004-11-26 2016-05-12 Xylem Ip Holdings Llc Umwälzpumpe
DE202008015058U1 (de) * 2008-11-13 2009-02-19 Eichenauer Heizelemente Gmbh & Co. Kg Beheizbares Pumpengehäuseteil
CN102080671B (zh) * 2009-11-27 2015-05-13 德昌电机(深圳)有限公司 离心泵
CN101865160B (zh) * 2010-07-08 2012-05-09 中国航天科技集团公司第六研究院第十一研究所 一种低比转速部分流泵
DE102013211180A1 (de) * 2013-06-14 2014-12-18 E.G.O. Elektro-Gerätebau GmbH Pumpe
KR101893847B1 (ko) * 2016-11-11 2018-08-31 명화공업주식회사 워터펌프
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
CN112294219B (zh) * 2019-07-29 2022-07-12 佛山市威灵洗涤电机制造有限公司 加热泵及具有其的家用电器
US11852162B2 (en) * 2021-12-17 2023-12-26 Robert Bosch Llc Centrifugal pump assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1418055A (en) * 1972-05-18 1975-12-17 Saunier Duval Pump volute assembly
NL7711247A (nl) * 1976-10-15 1978-04-18 Alfa Laval Ab Centrifugaal pomp.
US4225292A (en) * 1977-02-01 1980-09-30 Aktiebolaget Skf Liquid cooled pump motor unit
DE3920941A1 (de) * 1988-07-05 1990-01-11 Volkswagen Ag Kreiselpumpe, insbesondere kuehlfluessigkeitspumpe fuer eine brennkraftmaschine

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US2733892A (en) * 1956-02-07 Thrust bearings
US2257011A (en) * 1939-11-01 1941-09-23 G & J Weir Ltd Lubricating and cooling system for the stuffing boxes for pumps and like engines
BE791867A (fr) * 1971-11-26 1973-05-24 Wallace Murray Corp Compresseur de turbocompresseur a double enceinte collectrice
US3781126A (en) * 1972-06-15 1973-12-25 Wallace Murray Corp Turbocharger compressor with dual inlet and collector chambers
US4047831A (en) * 1975-11-13 1977-09-13 Allis-Chalmers Corporation Method for reducing hydraulic turbine seal temperature while turbine runner is rotating in air
DE2823261C2 (de) * 1978-05-27 1985-05-23 Robert Bosch Gmbh, 7000 Stuttgart Elektrische Maschine
US4245952A (en) * 1979-05-10 1981-01-20 Hale Fire Pump Company Pump
US5201642A (en) * 1991-11-27 1993-04-13 Warren Pumps, Inc. Magnetic drive pump
US5304033A (en) * 1992-07-20 1994-04-19 Allied-Signal Inc. Rotary compressor with stepped cover contour
US5701388A (en) * 1994-12-22 1997-12-23 Kohler Co. Combined heater and pump
US5569017A (en) * 1994-12-22 1996-10-29 Ametek, Inc. Fan end bracket for high velocity low pressure blowers
US6193463B1 (en) * 1999-06-30 2001-02-27 Alliedsignal, Inc. Die cast compressor housing for centrifugal compressors with a true volute shape
US6428268B1 (en) * 1999-08-20 2002-08-06 Giw Industries, Inc. Pump with auxiliary impeller vane inlet device
US6623239B2 (en) * 2000-12-13 2003-09-23 Honeywell International Inc. Turbocharger noise deflector
US6779974B2 (en) * 2002-12-11 2004-08-24 Polyvane Technology Corp. Device of a volute channel of a pump
GB0313143D0 (en) * 2003-06-07 2003-07-09 Boc Group Plc Sewage aeration
TWI235205B (en) * 2003-10-31 2005-07-01 Delta Electronics Inc Centrifugal fan with stator blades
US6945748B2 (en) * 2004-01-22 2005-09-20 Electro-Motive Diesel, Inc. Centrifugal compressor with channel ring defined inlet recirculation channel
US7210903B2 (en) * 2004-09-03 2007-05-01 Fasco Industries, Inc. Lobed joint draft inducer blower
US7189052B2 (en) * 2004-11-03 2007-03-13 Accessible Technologies, Inc. Centrifugal compressor having rotatable compressor case insert

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1418055A (en) * 1972-05-18 1975-12-17 Saunier Duval Pump volute assembly
NL7711247A (nl) * 1976-10-15 1978-04-18 Alfa Laval Ab Centrifugaal pomp.
US4225292A (en) * 1977-02-01 1980-09-30 Aktiebolaget Skf Liquid cooled pump motor unit
DE3920941A1 (de) * 1988-07-05 1990-01-11 Volkswagen Ag Kreiselpumpe, insbesondere kuehlfluessigkeitspumpe fuer eine brennkraftmaschine

Also Published As

Publication number Publication date
US20050196274A1 (en) 2005-09-08
EP1571348A3 (fr) 2008-12-24

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