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EP0320061B1 - Dispositif de pompage pour liquides légèrement visqueux - Google Patents

Dispositif de pompage pour liquides légèrement visqueux Download PDF

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Publication number
EP0320061B1
EP0320061B1 EP88202779A EP88202779A EP0320061B1 EP 0320061 B1 EP0320061 B1 EP 0320061B1 EP 88202779 A EP88202779 A EP 88202779A EP 88202779 A EP88202779 A EP 88202779A EP 0320061 B1 EP0320061 B1 EP 0320061B1
Authority
EP
European Patent Office
Prior art keywords
intermediate shaft
pump
shaft
motor
pump device
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.)
Expired - Lifetime
Application number
EP88202779A
Other languages
German (de)
English (en)
Other versions
EP0320061A2 (fr
EP0320061A3 (en
Inventor
Leo Bertram
Hugo Dr. Schemmann
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.)
Whirlpool Europe BV
Original Assignee
Philips Patentverwaltung GmbH
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics 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 Philips Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Patentverwaltung GmbH
Publication of EP0320061A2 publication Critical patent/EP0320061A2/fr
Publication of EP0320061A3 publication Critical patent/EP0320061A3/de
Application granted granted Critical
Publication of EP0320061B1 publication Critical patent/EP0320061B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/047—Bearings hydrostatic; hydrodynamic
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements
    • 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
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • 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
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/041—Axial thrust balancing
    • F04D29/0413—Axial thrust balancing hydrostatic; hydrodynamic thrust bearings
    • 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
    • F04D29/18—Rotors
    • F04D29/20—Mounting rotors on shafts
    • 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
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/001—Preventing vapour lock
    • F04D9/002—Preventing vapour lock by means in the very pump
    • F04D9/003—Preventing vapour lock by means in the very pump separating and removing the vapour
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to a pumping device for slightly viscous liquids, in particular lightly polluted water, with an electric drive motor, which is arranged above the liquid level in a collecting container, the pump wheel of which is arranged at a distance from the motor at the bottom of the collecting container in a pumping chamber, and is driven via a shaft bridging the distance, which extends without a seal into the pump sump.
  • the intermediate bearing point is designed to absorb the bending forces which are exerted by the pump wheel on the intermediate shaft. Bending loads coming from the pump wheel can be absorbed by means of the intermediate bearing point of the intermediate bush. It is particularly advantageous if the intermediate storage location is provided at the point at which the risk of maximum bending occurs without storage.
  • the shaft arrangement consisting of the intermediate shaft and the intermediate bushing
  • the shaft arrangement can be inserted from above into a ceiling wall, which in turn is inserted into the container ceiling of the collecting container.
  • the motor is fixed by means of a snap spring on the ceiling wall and the intermediate shaft and the Intermediate socket defines. After inserting the intermediate bush and shaft, the motor is then attached, which holds the intermediate bush and shaft with its end shield; only the snap spring ensures a sufficiently firm, captive connection.
  • the pump wheel is constructed symmetrically and consists of elastic plastic, with a receiving opening for the intermediate shaft being provided in its center, the dimensions of which are of different sizes in two mutually perpendicular directions, and that in the receptacle insertable plug end of the intermediate shaft is shaped accordingly to ensure a positive connection to the pump wheel.
  • the elastic pump wheel formed from plastic in the injection molding process can thus be fixed in a rotationally fixed manner, for example, if the receiving opening and the plug end of the intermediate shaft are flattened.
  • the head of the plug end of the intermediate shaft is bead-shaped, then the elastic pump wheel can simply be buttoned onto the insertable intermediate shaft end.
  • the upper wall of the pump chamber is designed to rise conically towards the intermediate shaft and the size of an annular opening around the intermediate shaft is selected so that the ventilation of the pump chamber is ensured through the ring opening.
  • the pump device shown in FIG. 1 is provided for pumping condensate liquid out of a clothes dryer.
  • a clothes dryer with a condenser has a collecting container 1, into which a pump device 3 is inserted.
  • the container ceiling 4 has an opening 5 into which a ceiling wall 6 of the pump device 3 fits.
  • the top wall 6 of the pumping device 3 rests on shoulders 7 around the opening 5 and at the same time stands with feet 8 on the bottom 9 of the collecting container 4.
  • the pump connector 12 leads through the Ceiling wall 6 upwards.
  • a sewage pipe can be connected to it.
  • the bearing block 13 is provided with a central, vertical bore 15 and a connecting piece 16 which extends the bore 15 and serves to support a shaft arrangement 17.
  • the shaft arrangement 17 consists of an intermediate bush 18, which can rest on shoulders 19 of the bearing block 13.
  • the intermediate bushing 18 is provided with an intermediate storage location 20 between the top wall 6 and the pump chamber wall 10.
  • An intermediate shaft 21, which can be inserted into the intermediate bushing 18, is supported in the intermediate bearing point 20 and carries the pump wheel 23, which is made of elastic plastic, at a push-on end 22.
  • the intermediate shaft is axially fixed by a contact shoulder 39a of the motor end shield 39 and the run-up shoulder 18a of the intermediate bushing 18.
  • the intermediate bushing 18 and the intermediate shaft 21 consist of a wear-resistant and low-friction plastic.
  • the intermediate shaft 21 is positively connected to the shaft 24 of the rotor 25 of a two-pole single-phase synchronous motor 26.
  • the rotor 25 accordingly consists of a two-pole magnetized permanent magnetic material.
  • the motor 26 is pressed onto the bearing block 13 by means of a snap spring 27.
  • the snap spring 27 is supported on a bearing arm 28 and engages in a recess 30 in the bearing block 13.
  • the push-on end 22 of the intermediate shaft 21 has a button-shaped or bead-shaped extension 31 at the extreme end, via which the pump wheel 23 can be unbuttoned with a central receiving opening 40, as can be seen more clearly from FIG. 2.
  • the push-on end 22 is flattened in the button area 32, for example approximately elliptical in section.
  • a lower wall 33 of the pump chamber 11 is designed to be removable. In this lower wall there is a suction hole 34. Another hole 35 is provided around the intermediate shaft 21 in the upper wall 10 of the pump chamber. This wall runs slightly conically curved upwards towards the opening 35, and the opening 35 is kept so large around the intermediate shaft 21 that air bubbles can escape into the interior 36 of the collecting container 1 without difficulty.
  • the pump device is installed in such a way that the intermediate bush 18 is first inserted into the bearing block 13 of the pump device 37, namely into the bore 15, until it bears against the associated shoulders 19. Then the intermediate shaft 21 is inserted from above without the impeller Intermediate bush inserted and the motor 14 added.
  • the motor shaft 24 receives a positive connection 38 to the intermediate shaft 21 via an external toothing provided on it and an internal toothing provided on the intermediate shaft 21.
  • the motor is fixed on the bearing block 13, and at the same time the intermediate shaft 21 and the intermediate bushing 18 fixed by the motor end shield 39.
  • the intermediate storage location 20 then ensures adequate guidance and mounting of the intermediate shaft 21 at a distance below the ceiling wall 6.
  • the pump chamber is designed symmetrically so that the single-phase synchronous motor 14 can rotate the pump wheel 23 in both directions and the water entering through the central opening 34 from the sump 41 into the pump can be conveyed away through the radially arranged pump nozzle 12 in each direction of rotation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Textile Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (9)

1. Dispositif de pompage pour liquides légèrement visqueux, en particulier de l'eau légèrement polluée, comportant un moteur électrique d'entraînement, installé au-dessus du niveau du liquide dans un récipient collecteur (1), dont la roue de pompe (23) est disposée à une certaine distance du moteur (14) sur le fond (9) du récipient collecteur (1) dans une chambre de pompe (11) et est entraînée par l'intermédiaire d'un arbre (21) couvrant cette distance, qui, sans joint d'étanchéité, atteint le fond (41), caractérisé par la combinaison des particularités suivantes:
a)   le moteur d'entraînement (14) est un moteur électrique de petite taille, en particulier un moteur synchrone monophasé bipolaire comportant un rotor (25) à aimant permanent,
b)   un arbre intermédiaire (21) est prévu qui est fait d'une matière plastique résistant à l'usure et à faible friction,
c)   l'arbre intermédiaire (21) est séparable, mais est accouplé par épousement de forme à l'arbre (24) du moteur,
d)   sur l'arbre intermédiaire est glissée une douille intermédiaire (18) en matière plastique résistant à l'usure et à faible friction qui centre l'arbre intermédiaire sur le flasque de palier (39) du moteur et le loge en un point d'appui intermédiaire (20) entre l'accouplement par épousement de forme (38) et la roue de pompe (23),
e)   la roue de pompe (23) est amovible et n'est mise en place que lors de l'assemblage.

2. Dispositif suivant la revendication 1, caractérisé en ce que le point d'appui intermédiaire (20) est conçu pour absorber les forces de flexion qui sont exercées par la roue de pompe (23) sur l'arbre intermédiaire (21).
3. Dispositif suivant la revendication 1 ou 2, caractérisé en ce que l'équipage d'arbre (17), constitué de l'arbre intermédiaire (21) et de la douille intermédiaire (18), peut être mis en place de haut en bas dans une paroi de couvercle (6) qui, de son côté, est insérée dans la paroi supérieure (4) du récipient collecteur.
4. Dispositif suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que le moteur (14) est fixé sur la paroi de couvercle (6) au moyen d'un ressort à déclic (27) et qu'il fixe ainsi l'arbre intermédiaire (21) et la douille intermédiaire (18).
5. Dispositif suivant la revendication 1, caractérisé en ce que la roue de pompe (23) est d'un type symétrique et est faite d'une matière plastique élastique, son centre présentant une ouverture de réception (40) pour l'arbre intermédiaire (21) dont les dimensions sont différentes dans deux directions perpendiculaires l'une à l'autre, et que l'extrémité de l'arbre intermédiaire (21) pouvant être enfichée dans l'ouverture de réception est de forme correspondante, afin d'assurer un assemblage par épousement de forme avec la roue de pompe (23).
6. Dispositif suivant la revendication 5, caractérisé en ce que l'ouverture de réception (40) et l'extrémité enfichable de l'arbre intermédiaire (21) sont de forme aplatie.
7. Dispositif suivant la revendication 6 ou 7, caractérisé en ce que la tête (31) de l'extrémité enfichable de l'arbre intermédiaire a la forme d'un bourrelet.
8. Dispositif suivant la revendication 7, caractérisé en ce que la roue de pompe (23) peut être montée par-dessus la tête en forme de bourrelet (31) sur l'extrémité enfichable de l'arbre intermédiaire (21).
9. Dispositif suivant la revendication 1, caractérisé en ce que la paroi supérieure (10) de la chambre de pompe (11) peut former un cône s'élevant en direction de l'arbre intermédiaire (21) et la grandeur d'une ouverture annulaire (35) autour de l'arbre intermédiaire (21) est choisie telle que la mise à l'atmosphère de la chambre de pompe (11) soit assurée par cette ouverture annulaire (35).
EP88202779A 1987-12-11 1988-12-05 Dispositif de pompage pour liquides légèrement visqueux Expired - Lifetime EP0320061B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873741978 DE3741978A1 (de) 1987-12-11 1987-12-11 Pumpvorrichtung fuer leicht viskose fluessigkeiten
DE3741978 1987-12-11

Publications (3)

Publication Number Publication Date
EP0320061A2 EP0320061A2 (fr) 1989-06-14
EP0320061A3 EP0320061A3 (en) 1990-01-24
EP0320061B1 true EP0320061B1 (fr) 1991-10-16

Family

ID=6342345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88202779A Expired - Lifetime EP0320061B1 (fr) 1987-12-11 1988-12-05 Dispositif de pompage pour liquides légèrement visqueux

Country Status (3)

Country Link
EP (1) EP0320061B1 (fr)
DE (2) DE3741978A1 (fr)
ES (1) ES2027757T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104265647A (zh) * 2014-07-31 2015-01-07 苏州淮通电气有限公司 耐磨耐冲击潜水泵

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29606135U1 (de) * 1996-04-02 1996-08-22 Speck Pumpenfabrik Walter Spec Galvanisch getrennte Pumpe
TWM263435U (en) * 2004-05-28 2005-05-01 Liung Feng Ind Co Ltd Co-axial power system
DE102010003580A1 (de) * 2010-04-01 2011-10-06 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät zur Behandlung von Wäsche
CN103454183A (zh) * 2013-09-14 2013-12-18 苏州多贝机械科技有限公司 便携式氟碳漆粘度计
CN106015120A (zh) * 2014-07-31 2016-10-12 丁永新 耐磨耐冲击射流真空泵
CN106122095A (zh) * 2014-07-31 2016-11-16 充梦霞 采用陶瓷体的耐磨射流真空泵

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072062A (en) * 1961-04-17 1963-01-08 Little Giant Corp Liquid pump
DE2407109C2 (de) * 1974-02-14 1975-04-10 Philips Patentverwaltung Gmbh, 2000 Hamburg Pumpvorrichtung für Flüssigkeiten
DE7623892U1 (de) * 1976-07-29 1977-01-27 Tunze, Norbert, 8122 Penzberg Kreiselpumpe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104265647A (zh) * 2014-07-31 2015-01-07 苏州淮通电气有限公司 耐磨耐冲击潜水泵
CN104265647B (zh) * 2014-07-31 2016-11-09 苏州海而仕信息科技有限公司 耐磨耐冲击潜水泵

Also Published As

Publication number Publication date
DE3865645D1 (de) 1991-11-21
ES2027757T3 (es) 1992-06-16
EP0320061A2 (fr) 1989-06-14
EP0320061A3 (en) 1990-01-24
DE3741978A1 (de) 1989-06-22

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