EP1571252A1 - Elektrisch angetriebene Pumpe für Waschmaschine o.ä. - Google Patents

Elektrisch angetriebene Pumpe für Waschmaschine o.ä. Download PDF

Info

Publication number
EP1571252A1
EP1571252A1 EP04100844A EP04100844A EP1571252A1 EP 1571252 A1 EP1571252 A1 EP 1571252A1 EP 04100844 A EP04100844 A EP 04100844A EP 04100844 A EP04100844 A EP 04100844A EP 1571252 A1 EP1571252 A1 EP 1571252A1
Authority
EP
European Patent Office
Prior art keywords
spacer
casing
flange
pump according
pump
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Withdrawn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
EP04100844A
Other languages
English (en)
French (fr)
Inventor
Fabio Zanello
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP04100844A priority Critical patent/EP1571252A1/de
Priority to US11/068,603 priority patent/US20050196296A1/en
Priority to JP2005059214A priority patent/JP2005246063A/ja
Publication of EP1571252A1 publication Critical patent/EP1571252A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/085—Arrangements or adaptations of 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage
    • D06F2103/48—Current or voltage of the motor driving the pump

Definitions

  • the present invention refers to an electric motor-driven pump for washing machines and the like.
  • pumps of this kind are formed by an electrical part comprising a rotor housing with stator windings that surround a stator pack and an hydraulic part comprising a dome connectable to a flange of the rotor housing to form a chamber in which an impeller rotates, the dome being provided with an intake port and a discharge duct for the liquid to be pumped.
  • the flange of the rotor housing and the dome are sealed by means of an O-ring or the like.
  • the aim of the present invention is therefore to solve the noted problems, eliminating the drawbacks of the cited known art and thus providing a pump adapted to reduce the vibrations generated by the rotor chamber and therefore the consequent noise.
  • a further object is to provide a pump composed of readily available parts, which are mass producible at reduced costs.
  • a not least object is to provide a pump, which is capable of offering the most ample guarantees of reliability and safety in use.
  • an embodiment of a electric motor-driven pump according to the present invention, generally designated by the reference numerical 1, comprises a rotor housing 2 having a coupling flange 3 connectable to a casing 4 so as to form a chamber for an impeller 5.
  • the pump comprises at least one vibration-damping spacer 6 arranged between the coupling flange 3 and the casing 4. Further the spacer 6 is integrally provided with connection means adapted to associate said flange and said casing to said spacer.
  • the pump electrical part which is of a per se known type, comprises stator windings 7 that surround a stator pack 8 and are connected to electrical terminals 9 for supplying them with power.
  • the coupling flange 3 extends from one end of the rotor chamber 2 and perpendicular thereto in correspondence to the coupling area of the impeller 5 with a rotor shaft.
  • An annular raised ridge 10 is provided on a coupling flange side 11 that faces the impeller 5 for centring in the vibration-damping spacer 6.
  • the casing 4 which is adapted to be fixed to the washing machine cabinet, comprises a substantially dome shaped body 12, sealingly and removably associable to the rotor housing 2 to provide in its interior the fluid chamber for the impeller 5.
  • the dome shaped body 12 is suitably provided with an intake duct 13 arranged along the rotational axis of the impeller and a discharge duct 14 arranged sideways with respect to the dome shaped body 12. Further the dome shaped body 12 is provided with an annular base 15 having an internal diameter slightly greater than the outer one of the annular raised ridge 10.
  • the spacer 6 is shaped as an annular ring advantageously made of resilient material adapted to be associated to the coupling flange side 11.
  • the spacer 6 is provided with the connection means which comprises a plurality of perforated sections 16 frustum cone shaped and protruding conical axially from the ring and formed integrally in one piece with the spacer 6.
  • Such perforated sections 16 are adapted to be received in matchingly shaped openings 17 formed through the coupling flange 3 so as to engage such openings 17 in correspondence of reduced cross-section portions 18 which the perforated sections 16 are provided with at the root thereof.
  • the coupling flange 3 can be provided with positioning lugs 19 protruding from the coupling flange side 13 and adapted to be inserted in corresponding slot 20 provided on the vibration-damping spacer 6 in order to prevent the reciprocal rotation between the latter and the coupling flange 3.
  • the annular ring of the spacer 6 has an axially extending edge 21 suitable to externally lay on the annular raised ridge 10 when the spacer 6 and the coupling flange 3 are associated as it is clearly shown in Figure 4.
  • Cylindrical through cavities are axially provided in the perforated sections 16 to accommodate fastening means 22 adapted to connect the casing 4 to the spacer 6.
  • the annular base 15 of the casing 4 is provided with threaded bores 23 to receive the fastening means 22 that being engaged with an abutment formed in the cylindrical through cavities fasten the casing 4 to the spacer 6.
  • the assembly of the above-described embodiment comprises to forcedly insert the perforated sections 16 through the matchingly shaped openings 17.
  • the inclined walls of the perforated sections 16 due to the resiliency thereof are progressively constrained inward by diameter dimension of the openings 17 up to the reduced cross-section portions 18 come in correspondence to the opening 17 such that the wall of the perforate sections 16 are allowed to snap outward recovering their original shape and causing the reduced cross-section portions 18 to engage to the openings 17.
  • the casing 4 is fasten to the spacer 6 by means of the fastening means 22 as described above.
  • annular base 15 of the casing 4 abuts against the annular portion of the spacer 6 while the annular raised ridge 10 of the coupling flange 3 and the internal portion of the annular base 15 are spaced-in between by the axially extending edge 21 of the spacer 6 that is interposed therebetween.
  • the assembly of the pump can be also realised by connecting the casing 4 to the spacer 6 first and then the coupling flange 3 to the spacer 6 inverting the operation described above.
  • the casing 4 which is substantially similar to the one disclosed for the first embodiment is provided with associating element 24 comprising angularly spaced apart arcuate tongues 25 which radially project from the annular base 15 of the casing 4 and are adapted to engage the connection means of the spacer 6.
  • the spacer 6 comprises an annular ring of resilient material having an axially extending edge 21 suitable to externally lay on the annular raised ridge 10 when the spacer 6 and the coupling flange 3 are associated as it is clearly shown in Figure 8.
  • the connection means, which are integrally provided in one piece with the spacer 6 comprise seats 26 formed by means of fins 27 extending from the outer edge of the spacer annular ring along the axially extending edge 21. Such fins 27 form arcuate grooves adapted to accommodate the tongues 25 of the casing 4 in order to connect the latter to the spacer 6.
  • the fins 27 are angularly spaced apart form one another by substantially the same angle that separates the tongues 25 so that a reciprocal rotation between the spacer 6 and the casing 4 allows the tongues 25 to be inserted into the arcuate grooves and locked between the fins 27 and the axially extending edge 21.
  • connection means of the spacer 6 are adapted to engage profiles 28 extending from the outer edge of the coupling flange 3 along the annular raised ridge 10 thereof.
  • the profiles 28 form undercuts 29 matchingly shaped and angularly spaced apart to accommodate the fins 27 upon a reciprocal rotation between the spacer 6 and the coupling flange 3.
  • the assembly of the pump is achieved by inserting the annular ring of the spacer 6 between the annular raised ridge 10 and the profiles 28, with the fins 27 positioned in correspondence of the profiles 28. Then a rotational sliding between the spacer 6 and the coupling flange 3 allows the fins 27 to be forced into the undercuts 29 and locked between the profiles 28 and the annular raised ridge 10 due to the elastic deformation of the spacer 6. Therefore, in a similar manner as described above, the annular base 15 of the casing 4 is inserted between the fins 27 and the axially extending edge 21 of the pacer 6 with the tongues 25 positioned in correspondence of the fins 27. Upon a rotational sliding between the spacer 6 and the casing 4 the tongues 25 are forced into the grooves, which the fins 27 form, and locked between the fins 27 themselves and the axially extending edge 21 due to the elastic deformation of the spacer 6.
  • the assembly of the pump can be realised by associating the casing 4 to the spacer 6 first and then by associating the coupling flange 2 to the spacer 6 or it can be realised by simply inverting the just described operation.
  • the vibration-damping spacer 6 acting as a seal element ensures a sealed coupling between the coupling flange 3 and the spacer 6 without the need of additional seals such as O-Ring and the like.
  • the pump according to the present invention prevents vibration to be transmitted from the rotor housing to the casing due to the particular configuration of the vibration-damping spacer that isolate the casing from the rotor.
  • the pump according to the present invention provides a simple sealing connection between the casing and the coupling flange.
  • the present invention provide an inexpensive vibration damping pump, thereby doing away with the serious drawback shared by prior-art machines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP04100844A 2004-03-03 2004-03-03 Elektrisch angetriebene Pumpe für Waschmaschine o.ä. Withdrawn EP1571252A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP04100844A EP1571252A1 (de) 2004-03-03 2004-03-03 Elektrisch angetriebene Pumpe für Waschmaschine o.ä.
US11/068,603 US20050196296A1 (en) 2004-03-03 2005-02-28 Electric motor-driven pump for washing machines and the like
JP2005059214A JP2005246063A (ja) 2004-03-03 2005-03-03 洗濯機等のための電動機駆動ポンプ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04100844A EP1571252A1 (de) 2004-03-03 2004-03-03 Elektrisch angetriebene Pumpe für Waschmaschine o.ä.

Publications (1)

Publication Number Publication Date
EP1571252A1 true EP1571252A1 (de) 2005-09-07

Family

ID=34746079

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04100844A Withdrawn EP1571252A1 (de) 2004-03-03 2004-03-03 Elektrisch angetriebene Pumpe für Waschmaschine o.ä.

Country Status (3)

Country Link
US (1) US20050196296A1 (de)
EP (1) EP1571252A1 (de)
JP (1) JP2005246063A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216470A (zh) * 2013-02-26 2013-07-24 无锡小天鹅股份有限公司 排水泵和具有该排水泵的洗衣机
DE102020208731A1 (de) 2020-07-13 2022-01-13 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Flüssigkeitsring-Pumpe

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005014071U1 (de) * 2005-09-06 2007-01-18 Oase Gmbh Pumpe für Teich-, Aquarien- o.dgl. Anlagen
KR101258435B1 (ko) * 2006-05-19 2013-04-26 삼성전자주식회사 세탁기
KR101369320B1 (ko) * 2007-03-06 2014-03-04 삼성전자주식회사 세탁기
KR200462490Y1 (ko) * 2007-07-31 2012-09-12 삼성전자주식회사 세탁기
CN101929465B (zh) * 2009-06-19 2013-12-11 德昌电机(深圳)有限公司 排水泵
JP6032959B2 (ja) * 2012-06-18 2016-11-30 日本電産サンキョー株式会社 ポンプの固定構造およびポンプ
EP3667089A1 (de) * 2018-12-13 2020-06-17 Grundfos Holding A/S Pumpenanordnung
CN113669297A (zh) * 2020-05-14 2021-11-19 佛山市顺德区美的洗涤电器制造有限公司 叶轮组件和风机组件

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9317524U1 (de) * 1993-11-16 1994-02-24 KTR Kupplungstechnik GmbH, 48429 Rheine Dämpfungsring zur Geräuschreduzierung
EP0902191A2 (de) * 1997-09-09 1999-03-17 Poretti-Gaggini Sa Anordnung einer Zentrifugalpumpe und deren Anwendung
DE19927896A1 (de) * 1998-10-15 2000-04-27 Abbas Mohadjer Koppelring für ein Laugenpumpengehäuse

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1004007A (en) * 1962-11-08 1965-09-08 Ferry Diamond Engineering Comp Improvements in and relating to rotary pumps
US3829248A (en) * 1973-01-04 1974-08-13 Little Giant Corp Utility pump
US4031715A (en) * 1975-12-12 1977-06-28 General Electric Company Flexible coupling assembly
US4101138A (en) * 1976-11-25 1978-07-18 Fiat Societa Per Azioni Gasket for internal combustion engines, incorporating locating pins
US4597131A (en) * 1984-07-16 1986-07-01 Whirlpool Corporation Mounting for motor-fan unit
US4637231A (en) * 1985-06-06 1987-01-20 General Electric Company Clothes washing machine including a high detergent concentration wash cycle
DE3524515A1 (de) * 1985-07-09 1987-01-15 Thyssen Plastik Anger Kg Wasserpumpe oder dergl.
US4730836A (en) * 1987-04-06 1988-03-15 Microdot Inc. Gasket alignment insert

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9317524U1 (de) * 1993-11-16 1994-02-24 KTR Kupplungstechnik GmbH, 48429 Rheine Dämpfungsring zur Geräuschreduzierung
EP0902191A2 (de) * 1997-09-09 1999-03-17 Poretti-Gaggini Sa Anordnung einer Zentrifugalpumpe und deren Anwendung
DE19927896A1 (de) * 1998-10-15 2000-04-27 Abbas Mohadjer Koppelring für ein Laugenpumpengehäuse

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216470A (zh) * 2013-02-26 2013-07-24 无锡小天鹅股份有限公司 排水泵和具有该排水泵的洗衣机
CN103216470B (zh) * 2013-02-26 2016-04-27 无锡小天鹅股份有限公司 排水泵和具有该排水泵的洗衣机
DE102020208731A1 (de) 2020-07-13 2022-01-13 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Flüssigkeitsring-Pumpe

Also Published As

Publication number Publication date
JP2005246063A (ja) 2005-09-15
US20050196296A1 (en) 2005-09-08

Similar Documents

Publication Publication Date Title
US20050196296A1 (en) Electric motor-driven pump for washing machines and the like
US7097434B2 (en) Device for transmitting motion between the rotor of a synchronous permanent-magnet motor and the working part, having an increased free rotation angle
CN107920704B (zh) 吸入单元
US6988873B2 (en) Monodirectional impeller with flexible vanes
US8110958B2 (en) Rotor cover with rotor fins extending between stator slots
CN109416058B (zh) 水泵
US11552527B2 (en) Packing and mounting mechanism for electric motor in small and medium-sized appliances
CN105298859A (zh) 一种洗碗机循环泵用电动机及洗碗机循环泵
US7033145B2 (en) Centrifugal pump for electrical household appliance or the like
KR101926474B1 (ko) 워터 펌프
US7278822B2 (en) Turbomolecular pump
US5823753A (en) Metal reinforced pump cover of an electrically driven air pump
KR100858132B1 (ko) 인서트사출로 제조되는 구동어셈블리가 구비된 마그네틱펌프
KR102563116B1 (ko) 배수펌프
US10859090B2 (en) Water pump
KR101968162B1 (ko) 워터 펌프
JP5712019B2 (ja) インペラとモータの連結構造
EP1303025A2 (de) Trägerstruktur für eine elektrische Tauchmotor
WO2000005799A1 (en) Electric motor with permanent-magnet rotor having viscous shaft coupling
KR102118029B1 (ko) 오일 펌프
CN213063979U (zh) 一种微型立式离心泵
EP3926172B1 (de) Motor, pumpe und waschvorrichtung
CN214154213U (zh) 无刷泵及应用该无刷泵的家用电器
KR19990002707U (ko) 브러시리스 모터

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

17P Request for examination filed

Effective date: 20060118

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20060629

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20081001