EP0551370A1 - Motopompe centrifuge. - Google Patents
Motopompe centrifuge.Info
- Publication number
- EP0551370A1 EP0551370A1 EP91917782A EP91917782A EP0551370A1 EP 0551370 A1 EP0551370 A1 EP 0551370A1 EP 91917782 A EP91917782 A EP 91917782A EP 91917782 A EP91917782 A EP 91917782A EP 0551370 A1 EP0551370 A1 EP 0551370A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- motor
- hub
- flywheel
- crank pin
- 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.)
- Granted
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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings 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
- 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
Definitions
- the present invention relates to a centrifugal motor pump.
- centrifugal motor pump In a household appliance, a centrifugal motor pump often serves as a liquid circulation pump such as a drain pump.
- a centrifugal motor pump usually includes a centrifugal pump and an electric drive motor.
- This electric motor can be a synchronous, asynchronous, universal motor or an electric motor of another known type. When this electric motor is a motor
- centrifugal motor pumps include a cylindrical tip provided with an axial terminal lug, firmly fixed on one end of the shaft of their synchronous drive motor 5 and a hub of their impeller mounted movably on this cylindrical tip. its toroidal hollow interrupted by a stopper covers the lug of this nozzle.
- the present invention aimed at avoiding the drawbacks mentioned above makes it possible to produce an economical centrifugal motor pump, silent in its operation and having a good engine torque at start-up making the operation of the motor pump reliable especially when its drive motor is an electric motor. synchronous.
- a centrifugal motor pump fitted with an impeller mounted with mobility limited in rotation, on one end of a shaft of the rotor of an electric drive motor is characterized in that it comprises between the rotor shaft of the drive motor and the impeller a movement transmission delay system comprising on the one hand a circular drive wheel fixed on one end of this rotor shaft and on the other hand an axial crank pin integral of a hub of this impeller, art artlanting over an area with a large radius of this flywheel and performing a free stroke, before a clutch with this flywheel.
- FIG. 1 shows a schematic partial view in section of a centrifugal motor pump showing a centrifugal pump whose impeller is driven by a synchronous electric motor with permanent magnets;
- FIG. 2 shows a partial schematic view, in cross section along a plane II -II of the motor pump of Figure 1 showing a motion transmission delay system between the drive motor shaft and the impeller the pump ;
- FIG. 3 shows a schematic end view of the motor pump impeller of Figure 1;
- FIG. 4 shows a partial schematic sectional view along a plane IV-IV of the impeller of Figure 3;
- - Figure 5 shows a schematic end view of a circular flywheel for driving the impeller of Figure 3 intended to be mounted on one end of the motor shaft of the motor pump of the figure 1,
- FIG. 6 shows a partial schematic view of the circular drive wheel of Figure 5, in section along a plane VI-VI;
- FIG. 7 shows a schematic view in axial section of a cover for closing the hub of the impeller of Figure 3
- - Figure 8 shows a schematic view in axial section of a support -tight bearing of the motor drive shaft of the pump in Figure 1, adjacent to the pump.
- a centrifugal motor pump 1 comprises a centrifugal pump 2, an electric drive motor 3 and a common housing 4 formed of two elements, namely, on the one hand, a hollow body 5 forming a rotor chamber 6 of the drive motor 3 and a pump plate 7, and on the other hand, a cover 9 forming a pump chamber 10 provided with an inlet nozzle 11, of an outlet nozzle 12 and a seal 13.
- the electric drive motor 3 is a synchronous motor provided with a permanent magnet rotor 15, housed inside the rotor chamber 6 and a stator 1G fixed around this rotor chamber 6 and protected by a cover 17.
- the shaft 20 of the rotor 15 is kept free to rotate by two bearing supports, a rear bearing support 21 fixed in the bottom of the rotor chamber and a front bearing support 24 adjacent to the pump, also serving a watertight dividing partition between the rotor chamber 6 and the pump chamber 10.
- the impeller 27 is mounted with limited mobility in rotation around the end 25 of the shaft 20 of the rotor 15.
- a centrifugal motor pump fitted with a pump impeller mounted with limited mobility in rotation on one end of a rotor shaft of an electric drive motor comprises between the rotor shaft of the motor d drive and the impeller, a movement transmission delay system comprising on the one hand a circular drive wheel fixed on one end of this rotor shaft, and on the other hand an axial crank pin secured to a hub of this impeller, hinging on an area with a large radius of this circular flywheel and performing a free stroke, before a clutch with this flywheel.
- the centrifugal motor pump 1 comprises, between the shaft 20 of the rotor 15 of the drive motor 3 and the impeller 27, a movement transmission delay system 30 comprising on the one hand a flywheel drive circular 31 fixed on the end 25 of this shaft 20 of the rotor, and on the other hand an axial crank pin 36 secured to a hub 37 of the impeller 27.
- the circular drive wheel 31 includes ( Figures 1, 5, 6) a circular disc with a central hole 32 surmounted by a concentric cylindrical tubular collar 33 and provided in a radial zone with a large radius of its surface, with a concentric axial groove 34 with a medium radius R and at non-contiguous end separated by a radial rib 35.
- the circular drive wheel 31 is mounted on the end 25 of the shaft 20 of the rotor 15 and is fixed there by screwing, by force fitting, by crimping, by welding or by any other known fixing means.
- the impeller 27 comprises (FIGS.
- a hollow hub 37 having on its periphery vanes 38 and in its hollow 39 which has a profile similar to that of the circular drive wheel 31 an axial sectoral crank pin 36 located in an area spaced from the axis 40 of this hub 37 by an average radial distance R which is equal to the average radius R of the concentric axial groove 34 of the circular drive wheel 31.
- the circular drive wheel 31 is disposed movably inside the hollow 39 of the hub 37 of the impeller 27, the crank pin 36 of the hub 37 is free to move in the circular groove 34.
- the dimensions of the circular flywheel 31 and its concentric axial groove 34, and those of the hollow 39 of the hub 37 of the impeller 27 and of its axial sectoral crank pin 36 are respectively predetermined to obtain a smooth sliding in their relative movement.
- the shape of a collar disc of the drive wheel 31 for a good spatial arrangement of the axial groove 34 concentrically in an area * • large radius of this wheel facilitates a wide range of combinations of elements of dimensions of the motion transmission delay system 30 to obtain on the one hand a relatively large length of concentric axial groove 34 with respect to the axis of rotation of the drive wheel 31 and at the same time a relative great distance of the axial crank pin 36 with respect to the axis of the impeller 27, consequently a relative large lever arm, that is to say a relative large drive motor torque for the flywheel 31.
- the relatively large length of the concentric axial groove 34 of the drive wheel 31 allows a large choice of viscosities of shock absorbing lubricant which, introduced into the space available between the drive wheel 31 and the hub 37 of the impeller 27, do not hinder a free movement of the axial crank pin 36 in the concentric axial groove 34 of the drive wheel 31 while achieving effective shock absorption between the radial rib 35 of the flywheel 31 and the crank pin 36.
- the hub 37 ( Figures 1, 3, 4, 7) of the impeller 27 covering.
- the circular flywheel 31 fixed on the end 25 of the shaft 20 of the rotor 15 and containing a damping lubricant, is hermetically closed at the opening 41 of its hollow 39 by a cover 45 mounted movably around the shaft 20 between the drive wheel 31 and the front bearing support 24.
- the cover 45 having a circular shape comprises (FIG. 7) on the one hand around its central hole 46 a concentric circular boss 47 in the hollow 48 of which is housed an O-ring shaft seal 49 (FIG. 1) and d 'on the other hand in its periphery an inverted edge 50 having a shape complementary and adjusted to that of the opening 41 of the hollow 39 of the hub 37 of the impeller 27 and provided on its outer surface with an annular retaining rib 52 intended to be embedded in a corresponding circular groove 54 formed in the thickness of the opening 41 of the hollow 39 of the hub
- the cover 45 thus effectively prevents any leakage of damping lubricant introduced into the hollow 39 of the hub 37 of the impeller 27 with a single shaft seal O-ring 49 of relatively small diameter.
- the linear speed of friction at the level of the contact surface between this O-ring 49 and the shaft 20 which respectively have a small diameter, is relatively low during a relative movement between the hub 37 and the driven flywheel 31 by this shaft 20.
- the wear of the small diameter O-ring 49 carried by the cover 45 is therefore low or negligible.
- the front bearing support 24 which also serves as a dividing sealed partition between the pump chamber 10 and the rotor chamber 6 and which bears in its hollow central part 54 (FIGS. 1, 8) a shaft seal 55, comprises in the periphery of the bottom of this hollow 54 axial holes 56 passage for attachment feet 57 of this seal 55 support - front bearing 24.
- the shape easily demouldable tubular assembly "support-bearing 24 - shaft seal 55" allows the latter to be made in one piece, by an economical bi-material molding.
- the cover 45 and the O-ring 49 which hermetically seal the hollow 39 of the hub 37 of the impeller 27 and on the other hand the cover 9 forming the pump chamber 10 and the seal 13 are respectively produced also in one piece by an economical bi-material molding.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9012291 | 1990-10-05 | ||
FR9012291A FR2667653B1 (fr) | 1990-10-05 | 1990-10-05 | Motopompe centrifuge. |
PCT/FR1991/000781 WO1992006300A1 (fr) | 1990-10-05 | 1991-10-04 | Motopompe centrifuge |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0551370A1 true EP0551370A1 (fr) | 1993-07-21 |
EP0551370B1 EP0551370B1 (fr) | 1995-03-15 |
Family
ID=9400971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91917782A Expired - Lifetime EP0551370B1 (fr) | 1990-10-05 | 1991-10-04 | Motopompe centrifuge |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0551370B1 (fr) |
AT (1) | ATE119973T1 (fr) |
DE (1) | DE69108250T2 (fr) |
ES (1) | ES2069310T3 (fr) |
FR (1) | FR2667653B1 (fr) |
WO (1) | WO1992006300A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4424996A1 (de) * | 1994-07-15 | 1996-01-18 | Oase Pumpen | Kreiselpumpe, insbesondere für Springbrunnen |
IT1281839B1 (it) * | 1995-01-19 | 1998-03-03 | Askoll Srl | Dispositivo perfezionato di avviamento del rotore di un motore sincrono a magneti permanenti |
ES2162544B1 (es) * | 1998-12-31 | 2002-07-01 | Fagor S Coop | Acoplamiento para la transmision de la rotacion en un motor sincrono. |
DE20305335U1 (de) * | 2003-04-02 | 2003-06-05 | BSH Bosch und Siemens Hausgeräte GmbH, 81669 München | Pumpe und Rotor dafür |
DE20305334U1 (de) * | 2003-04-02 | 2003-06-05 | BSH Bosch und Siemens Hausgeräte GmbH, 81669 München | Pumpe und Rotor dafür |
CN2705636Y (zh) * | 2004-06-16 | 2005-06-22 | 江门市汉宇电器有限公司 | 一种离心式排水泵 |
DE102012203615B4 (de) * | 2012-03-07 | 2013-11-21 | Hanning Elektro-Werke Gmbh & Co. Kg | Pumpe |
DE102013007624A1 (de) * | 2013-05-02 | 2014-11-06 | Wilo Se | Motorenkreiselpumpe mit einem Lagerträger |
CN106286345A (zh) * | 2016-09-01 | 2017-01-04 | 温州市彼得汽车部件有限公司 | 一种高效节能汽车二次空气泵 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4750872A (en) * | 1985-07-01 | 1988-06-14 | Easthorpe Investments Ltd. | Centrifugal pump with damped motor connection |
IT1218569B (it) * | 1987-04-22 | 1990-04-19 | Askoll Srl | Pompa centrifiga perfezionata per lavatrici, lavastoviglie ed elettrodomestici in genre |
DE3741977A1 (de) * | 1987-12-11 | 1989-06-22 | Philips Patentverwaltung | Pumpvorrichtung fuer leicht viskose fluessigkeiten |
-
1990
- 1990-10-05 FR FR9012291A patent/FR2667653B1/fr not_active Expired - Fee Related
-
1991
- 1991-10-04 DE DE69108250T patent/DE69108250T2/de not_active Expired - Fee Related
- 1991-10-04 WO PCT/FR1991/000781 patent/WO1992006300A1/fr active IP Right Grant
- 1991-10-04 ES ES91917782T patent/ES2069310T3/es not_active Expired - Lifetime
- 1991-10-04 AT AT91917782T patent/ATE119973T1/de active
- 1991-10-04 EP EP91917782A patent/EP0551370B1/fr not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9206300A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0551370B1 (fr) | 1995-03-15 |
WO1992006300A1 (fr) | 1992-04-16 |
FR2667653A1 (fr) | 1992-04-10 |
ES2069310T3 (es) | 1995-05-01 |
DE69108250T2 (de) | 1995-07-06 |
FR2667653B1 (fr) | 1995-01-27 |
ATE119973T1 (de) | 1995-04-15 |
DE69108250D1 (de) | 1995-04-20 |
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