US20130236297A1 - Pump - Google Patents
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- Publication number
- US20130236297A1 US20130236297A1 US13/786,494 US201313786494A US2013236297A1 US 20130236297 A1 US20130236297 A1 US 20130236297A1 US 201313786494 A US201313786494 A US 201313786494A US 2013236297 A1 US2013236297 A1 US 2013236297A1
- Authority
- US
- United States
- Prior art keywords
- seal
- motor casing
- section
- pump
- 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
Links
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 10
- 239000013013 elastic material Substances 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
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
- 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
- F04D13/0606—Canned motor pumps
- F04D13/0613—Special connection between the rotor compartments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
-
- 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
-
- 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
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
Definitions
- This present invention relates to a pump, in particular a canned motor pump, to deliver liquids in water carrying domestic appliances or such like which comprises a stator, a rotor and a drive shaft non-rotatably coupled to an impeller disposed in a pump compartment which is rotatably arranged inside a motor casing via bearing means wherein seal means are fitted on a first face end of the casing to seal said casing against the pump compartment.
- a pump for water carrying domestic appliances which comprises a motor casing with integrated stator and rotor on the one hand and an impeller arranged outside said casing on the other hand.
- the impeller shaft is firmly connected to a motor drive shaft which latter is via friction bearings arranged inside the motor casing.
- a packing type special shaft seal fitted to an end shield of the motor casing is provided on a first face end of the motor casing to seal the motor casing off against a pump compartment that is housing the impeller.
- the invention is in conjunction with the generic clause of Patent claim 1 characterized in that the bearing and seal means disposed on the first face end of the motor casing are integrated into a seal-bearing combination which comprises an axial bushing section for sliding arrangement on the drive shaft, a radial closing section to cover up the motor casing and at least one flexible seal element formed to said axial bushing section and/or said radial closing section.
- the invention provides for a one-part seal-bearing combination which serves both to support the drive shaft and to seal off the motor casing against a pump compartment.
- the one-part seal-bearing combination hence provides in combination a number of sealing and bearing functions other than the multi- component solution that has been adopted in the art so far. This affords the advantage that the extent of assembly work and/or assembly time can be reduced.
- the seal-bearing combination provided with a radial closing section to the radial outer marginal edge of which a motor casing seal element is formed.
- the motor casing seal element adjoins the closing section in radial direction and is preferably annular and of relatively small radial thickness. This affords the advantage that it takes a relatively small quantity of material to provide a seal.
- Another preferred embodiment of this present invention provides for the seal-bearing combination to have an axial bushing section to the axial end of which a shaft seal element is formed.
- Said shaft seal element is substantially an axial extension of the bushing section and permits to achieve compact sealing of the motor casing in the area of the drive shaft.
- the closing section and/or the bushing section is intended to serve as a carrier for seal means which are disposed close to and distant from the centerline to achieve relative compactness.
- the seal near the centerline (shaft seal element) and the seal means distant therefrom (motor casing seal element) are not direct connected, but just linked to each other via a disk of the closing section to form a one-piece unit.
- a modification of this present invention provides for the motor casing seal to be spray bonded to the bushing section and/or the closing section of the seal-bearing combination. This permits seal means to be fitted to a bearing in precise positions by easy methods.
- FIG. 1 is an axial section through a canned motor pump comprising an electric motor and
- FIG. 2 is a larger-scale axial section of a seal-bearing combination disposed in the area of the first face end of the motor casing that is facing the pump compartment.
- a pump according to an exemplary embodiment of this present invention as shown in the Figures is a canned motor pump 1 which can be preferably used in water carrying domestic appliances such as a dishwasher or such like.
- the motor casing of said pump 1 is a can 2 within which a rotor 3 of a synchronous motor and a drive shaft non-rotatably connected to said rotor 3 are arranged.
- a not-shown stator of the synchronous motor may be disposed outside said can 2 .
- the drive shaft 4 is non-rotatably connected to a pump impeller 6 that is arranged in a pump compartment 5 .
- a pump impeller 6 that is arranged in a pump compartment 5 .
- the drive shaft 4 coupled to the pump impeller 6 in a free-wheel or rotational backlash mode.
- a seal-bearing combination 8 having a bearing and sealing function is arranged in the area of a first face end 7 of the can 2 that is facing the pump compartment 5 .
- the one-part seal-bearing combination 8 has an axial bushing section section 9 for sliding arrangement of the drive shaft 4 .
- This bushing section 9 is made of the same material as another bushing section 10 that is integral with the can 2 and by means of which the drive shaft 4 is slidingly arranged on said can 2 in the area of a second face end 11 thereof.
- the seal-bearing combination 8 moreover has a radial closing section 12 to cover up an opening of the can 2 .
- This closing section 12 is integral with the bushing section 9 which it adjoins in a radially outward direction.
- Closing section 12 and bushing section 9 are made of an identical plastic material.
- the can 2 also preferably consists of that same material as said sections 9 and 12 .
- Bushing section 9 and the further bushing section 10 provide a bearing means for the drive shaft 4 to be rotatably arranged in the motor casing (can 2 ).
- Said closing section 12 extending in radial direction of the seal-bearing combination 8 has a disk 13 from which a first lock ring 14 protrudes on a side facing the motor casing 2 .
- Said first lock ring 14 serves to keep the seal-bearing combination 8 to the motor casing and/or can 2 and is coaxial with the drive shaft 4 and/or with an axis A of the can 2 .
- the outer surface of the first lock ring 14 is in full contact with an offset 15 of can 2 .
- a second lock ring 16 protrudes from the side of the disk 13 facing the impeller 6 from which a shoulder ring 17 of the impeller 6 extends to form a labyrinth seal. This prevents undesirable ingress of threads and such like to the drive shaft 4 .
- Said second lock ring 16 is coaxial with the can 2 and/or the impeller 6 .
- the seal-bearing combination 8 is also provided with a flexible seal element 18 arranged distant from the centerline as well as a flexible seal element 19 close to it.
- the seal element 18 distant from the centerline is a motor casing seal element formed to a radial outer marginal edge 20 of the closing section 12 .
- the circular motor casing seal 18 is angular and comprises a first leg 21 that extends from a periphery 22 of said radial outer marginal edge 20 of the closing section 12 . This substantially provides sealing action in radial direction.
- the motor casing seal 18 is moreover provided with a second leg 23 that extends from a radial surface 24 of the radial outer marginal edge 20 of the closing section 12 , i.e. preferably on the side of the disk 13 that is facing the impeller 6 . This provides sealing action in axial direction.
- the sealing element 19 close to the centerline is a shaft seal formed to an axial end of the bushing section 10 preferably on a side of said bushing section 9 that is facing the impeller 6 . It serves to align the can 2 relative to the pump compartment 5 in the area of the drive shaft 4 .
- Motor casing seal 18 and shaft seal 19 are joined to the closing section 12 and/or the bushing section 9 of the seal-bearing combination 8 by spray bonding.
- These seal means consist of identical elastic material, in particular an elastomer.
- Motor casing seal 18 and shaft seal 19 are separated from each other and substantially extend within a radial plane E along which the disk 13 of the closing section 12 is disposed.
- Both the motor casing seal 18 and the shaft seal 19 are of annular shape.
- Closing section 12 and bushing section 9 are made of a rigid plastic material which is suitable for the drive shaft 4 to be arranged in.
- seal-bearing combination 8 is adapted for use in other types of pumps also.
- the seal-bearing combination 8 is substantially for a bearing and a sealing function, but may also perform a closing and/or joining function which in this present exemplary embodiment is achieved by forming the lock rings 14 and 16 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Pump, in particular a canned motor pump, to deliver liquids in water carrying domestic appliances and such like, which comprises a stator, a rotor and a drive shaft non-rotatably coupled to an impeller disposed in a pump compartment which is rotatably arranged inside a motor casing via bearing means wherein seal means are fitted on a first face end of the motor casing to seal said casing off against the pump compartment, wherein the bearing and seal means arranged on the first face end of the motor casing are in the form of a seal-bearing combination which comprises an axial bushing section for sliding arrangement on the drive shaft, a radial closing section to cover up the motor casing and at least one flexible seal element formed to said axial bushing section and/or said radial closing section.
Description
- This present invention relates to a pump, in particular a canned motor pump, to deliver liquids in water carrying domestic appliances or such like which comprises a stator, a rotor and a drive shaft non-rotatably coupled to an impeller disposed in a pump compartment which is rotatably arranged inside a motor casing via bearing means wherein seal means are fitted on a first face end of the casing to seal said casing against the pump compartment.
- Prior known from DE 38 23 461 A1 is a pump for water carrying domestic appliances which comprises a motor casing with integrated stator and rotor on the one hand and an impeller arranged outside said casing on the other hand. The impeller shaft is firmly connected to a motor drive shaft which latter is via friction bearings arranged inside the motor casing. A packing type special shaft seal fitted to an end shield of the motor casing is provided on a first face end of the motor casing to seal the motor casing off against a pump compartment that is housing the impeller.
- DE 93 02 945 U1 is disclosing a pump having an electric motor and an impeller fixed to a drive shaft thereof wherein a rotor of the electric motor is disposed inside a can (motor casing). The drive shaft is in sliding arrangement via bearing bushes in the area of a first and second face end of the can. A sealing collar is fitted to the first face end end of the motor casing to seal off said latter against a pump compartment housing the impeller. The bearing bushes need to be retained in a separate bearing support. A drawback affecting this prior art pump resides in that the extent of assembly work is relatively large within the area of the first face end of the motor casing that is facing the pump compartment.
- It is an object of this present invention, therefore, to improve a pump comprising a drive shaft disposed inside a motor casing and an impeller non-rotatably connected to said drive shaft in such a way that the extent of assembly work needed to arrange the drive shaft and to seal off the motor casing against the pump compartment is simply being reduced.
- To achieve this object the invention is in conjunction with the generic clause of
Patent claim 1 characterized in that the bearing and seal means disposed on the first face end of the motor casing are integrated into a seal-bearing combination which comprises an axial bushing section for sliding arrangement on the drive shaft, a radial closing section to cover up the motor casing and at least one flexible seal element formed to said axial bushing section and/or said radial closing section. - The invention provides for a one-part seal-bearing combination which serves both to support the drive shaft and to seal off the motor casing against a pump compartment. The one-part seal-bearing combination hence provides in combination a number of sealing and bearing functions other than the multi- component solution that has been adopted in the art so far. This affords the advantage that the extent of assembly work and/or assembly time can be reduced.
- According to a preferred embodiment of the invention is the seal-bearing combination provided with a radial closing section to the radial outer marginal edge of which a motor casing seal element is formed. This helps to ensure dependable sealing action between motor casing and pump compartment. The motor casing seal element adjoins the closing section in radial direction and is preferably annular and of relatively small radial thickness. This affords the advantage that it takes a relatively small quantity of material to provide a seal.
- Another preferred embodiment of this present invention provides for the seal-bearing combination to have an axial bushing section to the axial end of which a shaft seal element is formed. Said shaft seal element is substantially an axial extension of the bushing section and permits to achieve compact sealing of the motor casing in the area of the drive shaft.
- According to the invention the closing section and/or the bushing section is intended to serve as a carrier for seal means which are disposed close to and distant from the centerline to achieve relative compactness. The seal near the centerline (shaft seal element) and the seal means distant therefrom (motor casing seal element) are not direct connected, but just linked to each other via a disk of the closing section to form a one-piece unit.
- A modification of this present invention provides for the motor casing seal to be spray bonded to the bushing section and/or the closing section of the seal-bearing combination. This permits seal means to be fitted to a bearing in precise positions by easy methods.
- Other advantages of this invention are as disclosed in the further subclaims.
- One exemplary embodiment of the invention will now be described in closer detail with reference to the accompanying drawings.
- In these drawings:
-
FIG. 1 is an axial section through a canned motor pump comprising an electric motor and -
FIG. 2 is a larger-scale axial section of a seal-bearing combination disposed in the area of the first face end of the motor casing that is facing the pump compartment. - A pump according to an exemplary embodiment of this present invention as shown in the Figures is a
canned motor pump 1 which can be preferably used in water carrying domestic appliances such as a dishwasher or such like. - The motor casing of said
pump 1 is acan 2 within which arotor 3 of a synchronous motor and a drive shaft non-rotatably connected to saidrotor 3 are arranged. A not-shown stator of the synchronous motor may be disposed outside said can 2. - The drive shaft 4 is non-rotatably connected to a pump impeller 6 that is arranged in a
pump compartment 5. Alternatively it is possible also to have the drive shaft 4 coupled to the pump impeller 6 in a free-wheel or rotational backlash mode. - A seal-bearing
combination 8 having a bearing and sealing function is arranged in the area of afirst face end 7 of thecan 2 that is facing thepump compartment 5. As will be seen more clearly fromFIG. 2 , the one-part seal-bearingcombination 8 has an axial bushing section section 9 for sliding arrangement of the drive shaft 4. This bushing section 9 is made of the same material as anotherbushing section 10 that is integral with thecan 2 and by means of which the drive shaft 4 is slidingly arranged on said can 2 in the area of asecond face end 11 thereof. - The seal-bearing
combination 8 moreover has aradial closing section 12 to cover up an opening of thecan 2. Thisclosing section 12 is integral with the bushing section 9 which it adjoins in a radially outward direction. Closingsection 12 and bushing section 9 are made of an identical plastic material. Thecan 2 also preferably consists of that same material as saidsections 9 and 12. - Bushing section 9 and the
further bushing section 10 provide a bearing means for the drive shaft 4 to be rotatably arranged in the motor casing (can 2). Saidclosing section 12 extending in radial direction of the seal-bearingcombination 8 has adisk 13 from which afirst lock ring 14 protrudes on a side facing themotor casing 2. Saidfirst lock ring 14 serves to keep the seal-bearingcombination 8 to the motor casing and/or can 2 and is coaxial with the drive shaft 4 and/or with an axis A of thecan 2. The outer surface of thefirst lock ring 14 is in full contact with anoffset 15 ofcan 2. - A
second lock ring 16 protrudes from the side of thedisk 13 facing the impeller 6 from which ashoulder ring 17 of the impeller 6 extends to form a labyrinth seal. This prevents undesirable ingress of threads and such like to the drive shaft 4. Saidsecond lock ring 16 is coaxial with thecan 2 and/or the impeller 6. - The seal-bearing
combination 8 is also provided with aflexible seal element 18 arranged distant from the centerline as well as aflexible seal element 19 close to it. - The
seal element 18 distant from the centerline is a motor casing seal element formed to a radial outermarginal edge 20 of theclosing section 12. The circularmotor casing seal 18 is angular and comprises a first leg 21 that extends from aperiphery 22 of said radial outermarginal edge 20 of theclosing section 12. This substantially provides sealing action in radial direction. - The
motor casing seal 18 is moreover provided with asecond leg 23 that extends from aradial surface 24 of the radial outermarginal edge 20 of theclosing section 12, i.e. preferably on the side of thedisk 13 that is facing the impeller 6. This provides sealing action in axial direction. - The sealing
element 19 close to the centerline is a shaft seal formed to an axial end of thebushing section 10 preferably on a side of said bushing section 9 that is facing the impeller 6. It serves to align thecan 2 relative to thepump compartment 5 in the area of the drive shaft 4. -
Motor casing seal 18 andshaft seal 19 are joined to theclosing section 12 and/or the bushing section 9 of the seal-bearingcombination 8 by spray bonding. These seal means consist of identical elastic material, in particular an elastomer. -
Motor casing seal 18 andshaft seal 19 are separated from each other and substantially extend within a radial plane E along which thedisk 13 of theclosing section 12 is disposed. - Both the
motor casing seal 18 and theshaft seal 19 are of annular shape. - Closing
section 12 and bushing section 9 are made of a rigid plastic material which is suitable for the drive shaft 4 to be arranged in. - It goes without saying that the seal-bearing
combination 8 is adapted for use in other types of pumps also. - The seal-bearing
combination 8 is substantially for a bearing and a sealing function, but may also perform a closing and/or joining function which in this present exemplary embodiment is achieved by forming thelock rings
Claims (10)
1. A pump adapted to deliver liquids in water-carrying domestic appliances and such like, which comprises a stator, a rotor and a drive shaft non-rotatably coupled to an impeller disposed in a pump compartment which is rotatably arranged inside a motor casing via bearing means wherein seal means are fitted on a first face end of the motor casing to seal said casing off against the pump compartment, wherein the bearing and seal means arranged on the first face end (7) of the motor casing (2) are in the form of a seal-bearing combination (8) which comprises an axial bushing section (9) for sliding arrangement on the drive shaft (4), a radial closing section (12) to cover up the motor casing and at least one flexible seal element (18, 19) formed to said radial closing section (12).
2. The pump according to claim 1 , wherein the flexible seal element is a motor casing seal (18) formed to a radial outer marginal edge (20) of the closing section (12).
3. The pump according to claim 2 , wherein the motor casing seal element (18) is annular.
4. The pump according to claim 1 , wherein the motor casing seal element (18) is angular comprising two legs (21, 23) of which a first leg (21) extends from the periphery (22) of the radial outer marginal edge 20 and a second leg (23) protrudes from a radial surface (24) of the radial outer marginal edge (20) of the closing section (12).
5. The pump according to claim 1 , wherein the flexible seal element is a shaft seal (19) formed to an axial end of the bushing section (9).
6. The pump according to claim 5 , wherein the shaft seal element (19) is formed to the side of the bushing section (9) that is facing the impeller (6).
7. The pump according to claim 5 , wherein the shaft seal (19) extending in axial direction from the bushing section (9) is annular.
8. The pump according to claim 1 , wherein the motor casing seal (18) and the shaft seal (19) are spray-bonded to the closing section (12) and/or the bushing section section (9).
9. The pump according to claim 1 , wherein the motor casing seal (18) and the shaft seal (19) are made of an identical elastic material, in particular an elastomer.
10. The pump according to claim 1 , wherein the closing section (12) of the seal-bearing combination (8) comprises a disk (13) from which a first lock ring (14) extends on the side facing the motor casing (2) for attachment to said casing (2) and a second lock ring (16) protrudes on the side facing the impeller (6) for sealing connection with said impeller (6).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012203615A DE102012203615B4 (en) | 2012-03-07 | 2012-03-07 | pump |
DE102012203615.6 | 2012-03-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20130236297A1 true US20130236297A1 (en) | 2013-09-12 |
Family
ID=47750509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/786,494 Abandoned US20130236297A1 (en) | 2012-03-07 | 2013-03-06 | Pump |
Country Status (4)
Country | Link |
---|---|
US (1) | US20130236297A1 (en) |
EP (1) | EP2636904A3 (en) |
CN (1) | CN103307019A (en) |
DE (1) | DE102012203615B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105863763A (en) * | 2016-05-24 | 2016-08-17 | 杭州汽轮动力集团有限公司 | Shielding expander for Rankine cycle power generation by using organic medium |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013007624A1 (en) * | 2013-05-02 | 2014-11-06 | Wilo Se | Motor centrifugal pump with a bearing carrier |
SE542626C2 (en) | 2018-04-11 | 2020-06-23 | Roplan Holding Ab | A pump housing device for a fluid pump, and a fluid pump |
US11565103B2 (en) | 2018-10-18 | 2023-01-31 | Boston Scientific Scimed, Inc. | Blood pump shaft bearing |
DE202024100525U1 (en) | 2024-02-02 | 2024-03-18 | Hanning Elektro-Werke Gmbh & Co. Kg | Canned motor and wet rotor electric pump hereby |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3823461A1 (en) * | 1988-07-11 | 1990-01-18 | Miele & Cie | Pumping device for liquids |
US6474959B2 (en) * | 1998-09-02 | 2002-11-05 | BSH Bosch und Siemens Hausgeräte GmbH | Liquid pump, in particular, detergent liquid pump for household appliances, and method for assembling it |
US20050111992A1 (en) * | 2002-09-03 | 2005-05-26 | Sabino Iacocca | Centrifugal pump for electrical household appliance or the like |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA584954A (en) * | 1954-07-01 | 1959-10-13 | Westinghouse Electric Corporation | Motor pump unit |
DE1653726A1 (en) * | 1967-10-26 | 1971-12-23 | Hollesens Fabrikker A S H | Electric motor driven centrifugal pump |
DE1937120A1 (en) * | 1969-07-22 | 1971-04-08 | Loewe Pumpenfabrik Gmbh | Vent valve for canned motor pumps |
DE2156610A1 (en) * | 1971-11-15 | 1973-05-24 | Allweiler Ag | SHAFT BEARING FOR A PLUG-FREE HEATING CIRCULATION PUMP |
JPS6134392A (en) * | 1984-07-27 | 1986-02-18 | Hitachi Ltd | Motor pump |
GB2212869B (en) * | 1987-11-24 | 1992-05-06 | Warman Int Ltd | Elastomeric pump casing seal |
JP2610356B2 (en) * | 1990-03-29 | 1997-05-14 | 東京電力株式会社 | Shaft sealing device for pump |
FR2667653B1 (en) * | 1990-10-05 | 1995-01-27 | Electro Mec Nivernais | CENTRIFUGAL MOTOR PUMP. |
DE9302945U1 (en) * | 1993-03-01 | 1993-11-11 | Hanning Elektro-Werke GmbH & Co, 33813 Oerlinghausen | Synchronous motor equipped with a start-up aid |
DE19943577A1 (en) * | 1999-09-13 | 2001-03-15 | Wilo Gmbh | Pump housing with integrated electronics |
DE10331602B4 (en) * | 2002-08-31 | 2005-08-25 | Oase Gmbh | Submersible pump with frost protection device |
CN2916195Y (en) * | 2006-01-26 | 2007-06-27 | 江门市汉宇电器有限公司 | Centrifugal drainage pump |
-
2012
- 2012-03-07 DE DE102012203615A patent/DE102012203615B4/en not_active Expired - Fee Related
-
2013
- 2013-02-25 EP EP13156594.7A patent/EP2636904A3/en not_active Withdrawn
- 2013-03-06 US US13/786,494 patent/US20130236297A1/en not_active Abandoned
- 2013-03-07 CN CN2013102165362A patent/CN103307019A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3823461A1 (en) * | 1988-07-11 | 1990-01-18 | Miele & Cie | Pumping device for liquids |
US6474959B2 (en) * | 1998-09-02 | 2002-11-05 | BSH Bosch und Siemens Hausgeräte GmbH | Liquid pump, in particular, detergent liquid pump for household appliances, and method for assembling it |
US20050111992A1 (en) * | 2002-09-03 | 2005-05-26 | Sabino Iacocca | Centrifugal pump for electrical household appliance or the like |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105863763A (en) * | 2016-05-24 | 2016-08-17 | 杭州汽轮动力集团有限公司 | Shielding expander for Rankine cycle power generation by using organic medium |
Also Published As
Publication number | Publication date |
---|---|
DE102012203615B4 (en) | 2013-11-21 |
CN103307019A (en) | 2013-09-18 |
EP2636904A2 (en) | 2013-09-11 |
EP2636904A3 (en) | 2014-10-01 |
DE102012203615A1 (en) | 2013-09-12 |
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