EP2888986A1 - Pompe d'évacuation d'un liquide et appareil domestique avec une telle pompe - Google Patents
Pompe d'évacuation d'un liquide et appareil domestique avec une telle pompe Download PDFInfo
- Publication number
- EP2888986A1 EP2888986A1 EP14199828.6A EP14199828A EP2888986A1 EP 2888986 A1 EP2888986 A1 EP 2888986A1 EP 14199828 A EP14199828 A EP 14199828A EP 2888986 A1 EP2888986 A1 EP 2888986A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- pump
- annular
- discharging
- liquid
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 56
- 238000007599 discharging Methods 0.000 title claims abstract description 33
- 239000012530 fluid Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 6
- 230000004323 axial length Effects 0.000 claims description 5
- 239000002245 particle Substances 0.000 abstract description 13
- 239000000835 fiber Substances 0.000 abstract description 12
- 238000004804 winding Methods 0.000 abstract description 2
- 230000018109 developmental process Effects 0.000 description 14
- 239000007921 spray Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002351 wastewater Substances 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
-
- 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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4225—Arrangements or adaption of recirculation or discharge 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
- F04D29/042—Axially shiftable rotors
-
- 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
- F04D29/086—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
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
- F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
-
- 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
- F04D29/22—Rotors specially for centrifugal 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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
Definitions
- the present invention relates to a pump for discharging a liquid, in particular a dewatering pump.
- the present invention further relates to a household appliance with such a pump, in particular a dishwasher or a washing machine.
- the drive shaft rotates together with the rotor of the electric motor in the rotor chamber, while the impeller of the pump rotates in the hydraulic chamber. More details can be found in the European patent application EP 2455614 A2 .
- the liquid discharged from the pump such as the washing water of a dishwasher or a washing machine, is often soiled with hair, particles, fibers or the like.
- the impeller is rotated for liquid discharge at a high speed in the hydraulic chamber, wherein the liquid contained in the hair, particles, fibers or the like. With the rotational movement of the impeller in said play and enter the rotary shaft or the Accumulating or rotating the rotary shaft prevents high-speed rotation of the rotating shaft and impairs the drainage performance of the pump.
- the object of the present invention is to provide a structurally improved pump for discharging a liquid with which the operational drainage capacity of a liquid drainage pump can be ensured.
- the object is achieved by a pump for discharging a liquid with an engine compartment, an electric motor having a drive shaft and is located in the engine compartment, and an impeller which is attached to the drive shaft, wherein between a front end cap of the engine compartment and the Impeller an axial clearance is present. It is provided that in the front end cap of the engine compartment an annular groove and on the impeller in the direction of the annular groove extending, annular impeller extension is formed.
- annular impeller extension and the matched annular groove is achieved during a high-speed rotation of the impeller in the liquid during operation of the pump for discharging a liquid that the hair, particles, fibers or the like contained in the liquid.
- Difficult with the Rotary movement of the impeller can pass through a formed by the annular impeller extension and the tuned annular groove in the axial clearance between the front end cap of the engine compartment and impeller. In this way, it is possible to prevent such foreign bodies from accumulating or winding on the drive shaft or around the drive shaft, thus preventing an operational high-speed rotation of the drive shaft and impairing the drainage performance of the pump.
- the impeller simultaneously reciprocates axially during high speed rotation with the drive shaft, and with the annular groove in the front end cap, greater space for the axial reciprocation of the impeller can be created to provide contact between the annular impeller extension and to avoid front end cap.
- both the annular impeller extension of the impeller and the matched annular groove can be provided in an amount of more than one.
- one or more additional annular impeller extensions and within the annular groove also one or more additional, correspondingly arranged annular grooves may be provided the annular impeller projections each protrude axially into an associated annular groove.
- the annular impeller extension projects axially into the annular groove.
- the axial clearance has an axial width which is at least greater than 1.5 mm.
- the axial width of the axial clearance is between 1.5 mm and 3.5 mm.
- the annular impeller extension extends axially in the direction of the front end cap of the engine compartment by a predetermined amount.
- the annular groove is formed in a surface of the front end cap of the engine compartment.
- annular end cap extension arranged around the annular groove is additionally formed on the front end cap of the engine compartment and extends axially by a predetermined amount.
- a radial clearance is present between the annular Endkappenfortsatz and annular impeller extension.
- the radial clearance, the annular groove and the axial play are connected to form a curved channel.
- the curved channel comprises at least a first and a second corner.
- both the first and the second corner have an angle of approximately 90 degrees.
- the curved channel initially extends axially in a direction pointing to the front end cap direction to the first corner and then in the longitudinal direction to the second corner. This in turn is followed by an axial extension in a direction away from the front end cap direction. This results in an even curvilinear curved channel, which makes it even harder that in the Hair, particles, fibers or the like contained. Liquid discharged through this channel in the axial play between the front end cap of the engine compartment and impeller and accumulate or wind on the drive shaft or to the drive shaft.
- a plurality of annular grooves may be formed in the front end cap and a plurality of annular vane extensions may be formed on the impeller, so that the curved channel has a longer course and more similar first and second corners.
- the annular groove has a greater radial width than the annular impeller extension.
- the annular groove has a radial width which is larger by 1-4 mm than the radial width of the annular impeller extension.
- annular impeller extension protrudes into the annular groove, so that the curved channel described above arises. Moreover, in the high-speed rotation of the impeller, a free rotational movement of the annular impeller extension is made possible in the annular groove.
- the annular impeller extension has an axial length which is greater than the axial width of the axial clearance.
- the annular impeller extension has an axial length which is greater by 1.5-4 mm than the axial width of the axial clearance.
- the annular impeller extension can axially exceed the axial clearance to project into the annular groove and thereby produce the curved channel described above.
- the impeller is mounted on the drive shaft so that when sliding the impeller on the drive shaft between the impeller and the front end cap of the engine compartment, the axial play arises.
- the impeller, the annular impeller extension and the annular groove are arranged concentrically with each other.
- the pump for discharging a liquid is a centrifugal pump for draining water.
- the invention further proposes a household appliance operated with water, in particular a dishwasher or a washing machine, which comprises a pump for discharging a liquid according to one of the preceding embodiments.
- the in FIG. 1 illustrated dishwasher GS includes a serving as a washing container interior IR, which is by a door (not labeled) can be opened or closed, wherein the door for the purpose of loading or unloading is pivotally connected to the dishwasher GS.
- a dish rack GK is arranged for receiving an object to be cleaned, which is removable from the interior IR of the dishwasher GS, in order to simplify the loading or unloading.
- a spray device in the form of a spray arm SA for applying a fluid to the object to be cleaned is installed in the interior IR of the dishwasher GS, wherein the fluid may be filled with e.g. a cleaning or rinsing agent may be mixed with water to allow cleaning and / or spotless drying of the object to be cleaned.
- the fluid dripping from the object to be cleaned is collected in a pump sump PS located in a bottom portion of the interior IR of the dishwasher GS.
- a filter device (not labeled) is installed, with the impurities or particles can be cut out of the circulating fluid.
- the spray arm SA is flow-connected via a supply line ZL with a circulation pump UP, which is located in the vicinity of the other dishwasher components of a arranged below the interior IR of the dishwasher GS bottom part BO.
- a circulation pump UP which is located in the vicinity of the other dishwasher components of a arranged below the interior IR of the dishwasher GS bottom part BO.
- the circulation pump UP comprises an integrated water heater WZ in order to heat the fluid flowing through the circulation pump UP.
- a separate continuous heating or other water heaters may be provided to heat the fluid.
- a pump for discharging a liquid LP in particular for discharging a befindliches in the interior IR of the dishwasher GS liquid is provided, which can be fluidly connected both with the pump sump PS and with a drainage line EL of a household wastewater drainage network.
- the pump for discharging a liquid LP in particular for discharging a located in the interior IR of the dishwasher
- the impeller 30 is mounted in a region of the rotary shaft 40 facing the front end cap 11, wherein an annular impeller projection 31 formed on the impeller 30 projects in the direction of the annular groove 12 in the front end cap 11, preferably in the Annular groove 12, extends.
- the annular groove 12 has a radial width which is preferably larger by 1-4 mm than the radial width of the annular impeller extension 31.
- the impeller 30, the annular impeller extension 31 and the annular groove 12 are arranged concentrically with each other.
- the impeller 30 is in the forward end cap 11 facing portion of the rotary shaft 40 attached to this so that between the impeller 30 and front end cap 11 an axial clearance L1 is present, see FIG. 4 .
- This axial clearance L1 has an axial width which is at least greater than 1.5 mm and preferably between 1.5 mm and 3.5 mm.
- the annular impeller extension 31 has an axial length which is preferably 1.5-4 mm larger than the axial width of the axial clearance L1, and therefore can axially exceed the axial clearance L1 to project into the annular groove 12.
- annular impeller extension 31 and the matched annular groove 12 is achieved during high-speed rotation of the impeller 30 in the liquid during operation of the pump for discharging a liquid that contained in the liquid hair, particles, fibers or the like. Only difficult with the rotational movement of the impeller 30 through the formed by the annular impeller extension 31 and the matched annular groove 12, curved channel 80 can get into the axial clearance L1 between the front end cap 11 of the engine compartment 10 and impeller 30. In this way, it is possible to prevent such foreign bodies from accumulating or twisting on the drive shaft 40 or around the drive shaft, thereby preventing an operational high-speed rotation of the drive shaft 40 and impairing the drainage performance of the pump.
- the impeller 30 simultaneously reciprocates axially during high speed rotation with the drive shaft 40, and with the annular groove 12 in the front end cap 11, greater space for the axial reciprocation of the impeller 30 can be created to make contact between annular impeller extension 31 and front end cap 11 and to prevent associated high speed rotation prevention.
- both the annular impeller extension 31 of the impeller 30 and the matched annular groove 12 may be provided in an amount greater than one.
- one or more additional annular impeller extensions and within the annular groove 12 also one or more additional, correspondingly arranged Ring grooves may be provided, wherein the annular impeller projections each protrude axially into an associated annular groove.
- an even longer and curvilinear curved channel 80 can be produced, making it even more difficult for the hair, particles, fibers or the like contained in the discharged liquid to pass through the curved channel 80 in the axial play L1 between the front end cap 11 of the Engine compartment 10 and impeller 30 enter and accumulate or wind on the drive shaft 40 or to the drive shaft.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL14199828T PL2888986T3 (pl) | 2013-12-27 | 2014-12-22 | Pompa do odprowadzania płynu i urządzenie gospodarstwa domowego z taką pompą |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310740096.0A CN104747458A (zh) | 2013-12-27 | 2013-12-27 | 排放液体的泵及具有该泵的家用电器 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2888986A1 true EP2888986A1 (fr) | 2015-07-01 |
EP2888986B1 EP2888986B1 (fr) | 2020-12-02 |
Family
ID=52231979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14199828.6A Active EP2888986B1 (fr) | 2013-12-27 | 2014-12-22 | Pompe d'évacuation d'un liquide et appareil domestique avec une telle pompe |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2888986B1 (fr) |
CN (1) | CN104747458A (fr) |
ES (1) | ES2835252T3 (fr) |
PL (1) | PL2888986T3 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114394170A (zh) * | 2022-03-04 | 2022-04-26 | 珠海市一微机器人技术有限公司 | 一种驱动轮模组及轮式机器人 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10513928B2 (en) * | 2017-08-31 | 2019-12-24 | Flowserve Management Company | Axial thrust balancing device |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE6905217U (de) * | 1969-02-11 | 1969-11-20 | Licentia Gmbh | Zentrifugalpumpe fuer wasch- oder geschirrspuelmaschinen |
EP0487785A1 (fr) * | 1990-11-30 | 1992-06-03 | Siemens Aktiengesellschaft | Entrainement pour rotor de pompe |
JPH10274195A (ja) * | 1997-03-31 | 1998-10-13 | Matsushita Electric Ind Co Ltd | ポンプ |
DE102009028310A1 (de) * | 2009-08-06 | 2011-02-10 | Robert Bosch Gmbh | Flüssigkeitspumpe |
EP2455614A2 (fr) | 2010-11-23 | 2012-05-23 | ebm-papst Landshut GmbH | Pompe destinée au transport de liquides |
WO2012123978A2 (fr) * | 2011-03-15 | 2012-09-20 | Hydor Srl | Moteur électrique synchrone pour le fonctionnement d'une pompe et pompe à moteur correspondante |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1226677B (it) * | 1988-08-17 | 1991-01-31 | Nowax Srl | Turbomacchina operatrice, in particolare elettropompa, con struttura di collegamento motore - pompa migliorata |
KR970006929A (ko) * | 1995-07-25 | 1997-02-21 | 배순훈 | 냉각수 강제순환방식의 온수순환펌프 |
CN2485457Y (zh) * | 2001-05-29 | 2002-04-10 | 于国强 | 一种改进的家用电器排水泵用叶轮 |
-
2013
- 2013-12-27 CN CN201310740096.0A patent/CN104747458A/zh active Pending
-
2014
- 2014-12-22 EP EP14199828.6A patent/EP2888986B1/fr active Active
- 2014-12-22 ES ES14199828T patent/ES2835252T3/es active Active
- 2014-12-22 PL PL14199828T patent/PL2888986T3/pl unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE6905217U (de) * | 1969-02-11 | 1969-11-20 | Licentia Gmbh | Zentrifugalpumpe fuer wasch- oder geschirrspuelmaschinen |
FR2035233A5 (fr) * | 1969-02-11 | 1970-12-18 | Licentia Gmbh | |
EP0487785A1 (fr) * | 1990-11-30 | 1992-06-03 | Siemens Aktiengesellschaft | Entrainement pour rotor de pompe |
JPH10274195A (ja) * | 1997-03-31 | 1998-10-13 | Matsushita Electric Ind Co Ltd | ポンプ |
DE102009028310A1 (de) * | 2009-08-06 | 2011-02-10 | Robert Bosch Gmbh | Flüssigkeitspumpe |
EP2455614A2 (fr) | 2010-11-23 | 2012-05-23 | ebm-papst Landshut GmbH | Pompe destinée au transport de liquides |
WO2012123978A2 (fr) * | 2011-03-15 | 2012-09-20 | Hydor Srl | Moteur électrique synchrone pour le fonctionnement d'une pompe et pompe à moteur correspondante |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114394170A (zh) * | 2022-03-04 | 2022-04-26 | 珠海市一微机器人技术有限公司 | 一种驱动轮模组及轮式机器人 |
Also Published As
Publication number | Publication date |
---|---|
CN104747458A (zh) | 2015-07-01 |
EP2888986B1 (fr) | 2020-12-02 |
ES2835252T3 (es) | 2021-06-22 |
PL2888986T3 (pl) | 2021-06-14 |
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