EP2255093A1 - Dynamisches pumpenrad für eine pumpe sowie eine pumpeneinrichtung mit einem dynamischen pumpenrad - Google Patents
Dynamisches pumpenrad für eine pumpe sowie eine pumpeneinrichtung mit einem dynamischen pumpenradInfo
- Publication number
- EP2255093A1 EP2255093A1 EP09712496A EP09712496A EP2255093A1 EP 2255093 A1 EP2255093 A1 EP 2255093A1 EP 09712496 A EP09712496 A EP 09712496A EP 09712496 A EP09712496 A EP 09712496A EP 2255093 A1 EP2255093 A1 EP 2255093A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- base body
- wing element
- pump
- wing
- 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2283—Rotors specially for centrifugal pumps with special measures for reverse pumping action
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0055—Rotors with adjustable blades
-
- 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
- F04D29/24—Vanes
- F04D29/247—Vanes elastic or self-adjusting
Definitions
- the present invention relates to an impeller for a pump, having a base body rotatable about a rotation axis, on which is arranged at least one vane element for conveying a fluid during rotation of the impeller. Moreover, the present invention relates to a pump device with such a pump.
- Such pump wheels are already known from the prior art. They generally comprise a main body rotatable about an axis of rotation and at least one, but usually a plurality of vane elements, which are arranged on the base body and designed to convey a fluid upon rotation of the impeller. Pump wheels are also known from the prior art in which the at least one wing element is movably arranged on the base body.
- the document US 2570862 discloses a pump device with a
- Impeller which has a plurality of wing elements, which are made of an elastic material, in particular made of rubber.
- document EP 0166104 B1 discloses a centrifugal pump, in particular for car washes, comprising an impeller adapted to rotate in two opposite directions, and which
- the wing elements each comprise a fixed part which defines a radial extent, and a hinged part which opens in a first direction of rotation of the impeller or closes in a second opposite direction of rotation, so that in the first direction of rotation, the wing elements a first
- Radial extension and in the second direction of rotation have a second radial extent. This ensures that depending on the direction of rotation a different
- a centrifugal pump consists in that, in a rotation in the second direction of rotation, in which the applied parts of the wing elements are closed, it is still possible to produce a delivery pressure for the fluid caused by the fixed parts.
- the object of the present invention is to provide an impeller for a pump and a pump device, in which measures are taken to ensure that upon rotation of the impeller in a first direction, a maximum delivery pressure and a rotation of the impeller in an opposite second direction, a minimum delivery pressure can be generated.
- An inventive impeller for a pump comprises a base body rotatable about a rotation axis on which at least one vane element for conveying a fluid is arranged upon rotation of the impeller, wherein the impeller comprises a pivoting device by means of which the at least one vane element depending on the direction of rotation between an action position, in which a delivery pressure for the fluid can be generated, and a rest position in which the delivery pressure is substantially absent, is mounted pivotably about an axis of rotation of the impeller at an angle greater than 0 ° arranged pivot axis.
- an essential idea of the invention is that a pivoting device is provided, which is designed in such a way that the at least one wing element is arranged about a pivot axis arranged at an angle greater than 0 °, in particular at a right angle, to the axis of rotation of the impeller an action position and a rest position can be worked out.
- the impeller according to the invention that when the impeller rotates in a first direction of rotation, a delivery pressure for the fluid and at a rotational movement of the impeller in an opposite second direction substantially no delivery pressure for the fluid is generated.
- the base body is plate-shaped.
- the base body is disc-shaped.
- the pivoting device is arranged in a radial direction on the disc-shaped base body, such that the at least one wing element is coupled to the base body by means of the pivoting device along a radius of the disk-shaped base body.
- the at least one wing element is in the rest position with a pressure surface on the body at least partially.
- the at least one wing element is arranged in the rest position in a first approximation parallel to the base body. This ensures that in a rotational movement of the impeller in the second direction of rotation no delivery pressure for the fluid or no frictional force can be generated and thus a high efficiency is ensured.
- the at least one wing element in this embodiment has a flat pressure surface which is arranged parallel to the base body in the rest position of the wing element.
- the at least one wing element can also have a concave pressure surface, wherein in this embodiment the parallel arrangement of the wing element to the base body in the rest position can be considered as a first approximation.
- the at least one wing element is arranged in the action position with a pressure surface at an angle greater than 0 ° to the base body. If the at least one wing element has a flat pressure surface, then it can be provided that the at least one wing element is arranged in the action position at an angle of approximately 90 ° to the base body. If the pressure surface of the wing element is concave, then the at least one wing element in the action position is preferably arranged in a first approximation perpendicular to the base body.
- the at least one wing element has a concave pressure surface. This ensures that the fluid can be conveyed more reliably in a rotational movement of the impeller in the first direction of rotation and a larger discharge pressure can be generated.
- the base body has a recess formed on a side of the base body facing the wing element, into which the wing element can be received at least in some areas in the rest position.
- This is preferably arranged at least one wing element in the rest position in the recess of the body completely sunk.
- the depression arranged in the main body is open towards the outside in a radial direction of the impeller.
- a geometry of the recess of the base body is adapted to a geometry of an outer contour of the wing element.
- the at least one wing element is completely sunk in the rest position in the recess of the base body and, moreover, is arranged flush with the base body.
- a flush surface of the base body is formed.
- the at least one wing element in the rest position is arranged sunk completely in the recess of the body that a countersink between a surface of the body and a surface remote from a pressure surface of the wing member surface of the wing member is formed or at least one Wing element in the recess deeper than the surface of the body is sunk.
- the at least one wing element is designed in the shape of a circle segment. It can be provided in particular that the recess of the base body is also formed in a circular segment, which ensures that the at least one wing element can be sunk into the recess.
- the at least one wing element has a projection for abutment against a contact surface of the base body. This ensures that the at least one wing element in the action position can rest stably on the base body, in particular on the contact surface of the base body.
- the projection of the at least one wing element is designed as a nose or web which extends an outer edge of the wing element.
- a gap is formed between an outer contour of the projection of the wing element and a wall formed by a depression in the base body, which forms a flow channel.
- the recess may be formed such that the projection or the outer contour of the projection of the wing member facing wall is disposed at an angle greater than 0 °, preferably at an angle of about 45 ° to the axis of rotation of the impeller.
- a recess to be formed on an abutment side of the wing element which faces the main body and defines a pressure surface by means of which the wing element can automatically be pivoted out of the rest position into the action position by a flow pressure of the fluid.
- the recess of the wing element is open in a radial direction of the pump wheel to the outside, so that it is ensured that a flow pressure of the fluid can cause a rapid and reliable opening of the wing element in the action position.
- a flow channel is formed by the recess of the wing element or a flow channel defined by a gap formed between an outer contour of a projection of the wing element and a wall formed by a depression in the base body is increased.
- the base body has a coupling device arranged on a side of the base body remote from the wing element for coupling the impeller to a pump shaft.
- the coupling device has a protrusion of the main body defining, protruding from the main body or projecting, annular or cylindrical projection part or coupling part, which has an outer, facing away from the axis of rotation of the impeller wall and one of the axis of rotation of the impeller facing inner side.
- the inner side facing the axis of rotation of the impeller may be formed such that it comprises a structure having a surface. In particular, the structure over a whole circumference of the inner side of the projecting part or coupling part is formed regularly.
- the coupling device moreover has an opening in the main body of the impeller, which defines an interior of a side facing away from the coupling device side and the wing member facing side of the impeller arranged hub member.
- the pivoting device preferably has a groove arranged radially on the base body into which a pin-like part of the wing element extends and is rotatably mounted therein.
- the groove is arranged on an outer edge of the base body. It can be provided that the groove is formed in the shape of a cylinder segment and open in a direction defined by the axis of rotation of the impeller.
- the pin-like part of the wing member may be formed such that a gap between the wing member and the pin-like member is at least partially formed, in which a portion of the groove projects depending on the position of the wing member.
- the base body has a hub element arranged on a side of the base body facing the wing element and projecting from the base body.
- the hub element is arranged centrally on the base body.
- the hub element has at least one recess with a contact surface for striking a projection of the wing element in the action position. This ensures that the at least one wing element in the action position can rest stably against the hub element.
- the main body and the at least one wing element are preferably designed as separate components. As a result, it is achieved with regard to the production that the base body and the wing element can be manufactured separately and assembled together in one production step.
- the pump for a household appliance in particular for the cleaning of dishes, provided.
- a pump device for a domestic appliance, in particular for the cleaning of crockery pieces, comprises at least two pump wheels, wherein at least one of the pump wheels is an impeller according to the invention.
- the at least two pump wheels are held on a common pump shaft, wherein the at least two pump wheels are preferably rotatably coupled to the pump shaft.
- a first impeller is designed as a circulation pump and a second impeller as a sewage pump in the domestic appliance.
- the pump device is designed such that it has two pump wheels arranged on a common pump shaft, one of the pump wheels being an impeller according to the invention.
- the two pump wheels are arranged on the pump shaft such that the at least one vane element of the impeller according to the invention is arranged on a side remote from the pump shaft and from the second impeller.
- the pump device is preferably configured in such a way that, when the pump shaft rotates in a rotational direction, only one impeller generates a delivery pressure for one fluid, wherein no delivery pressure for the fluid can be generated by means of the other impeller. This is achieved by the inventive design of the impeller.
- Another aspect of the present invention relates to a domestic appliance, in particular for the cleaning of dishes, with a pump device according to the invention.
- FIG. 1 shows an impeller according to an embodiment of the present invention with a wing element in an action position.
- FIG 5 is a side view and a plan view of the impeller with the wing element in the action position.
- FIG. 6 is a side view and a plan view of the impeller with the wing element in the rest position.
- Fig. 7 shows a pump device according to an embodiment of the present invention with two pump wheels.
- An illustrated in Fig. 1 impeller 1 according to an embodiment of the present invention comprises a base body 2 and three evenly spaced from each other over a circumference of the base body 2 wing elements 3.
- the impeller 1 is rotatable about a rotational axis D (z-direction).
- the impeller 1 is based on a cylindrical coordinate system with a radial direction r (perpendicular to the z-direction), an axial direction z and an angular direction a (plane perpendicular to the z-direction).
- the base body 2 is plate-shaped and disk-shaped or circular in a cross-section in the radial direction r.
- the pump impeller 1 has a hub element 4 which is centrally arranged on the base body 2 on a side facing the wing elements 3 and projecting from the base body 2 in the axial direction z, which in the present case is of a columnar or cylindrical design.
- the impeller 1 further comprises for each wing element 3 each have a pivoting device 5, by means of which each one wing element 3 between an action position shown in FIG. 1 and a rest position about a in the present example perpendicular to the axis of rotation D arranged and in the radial direction r extending pivot axis S is pivotally mounted.
- the pivoting device 5 comprises a groove 7 which extends in the radial direction r and is arranged on an outer edge 6 of the main body 2 in the radial direction r, into which extends a pin-like part 8 of the respective one wing element 3.
- the base body 2 and the three wing elements 3 are formed in the present example as separate components. Referring to Fig.
- the pin-like part 8 of each wing member 3 is formed such that between a base part 9 of the wing member 3 and a projection 10 of the pin-like member 8, a gap 1 1 is formed, in which a portion 12 of the groove 7 each projects according to the position of the pivotable wing element 3.
- the wing elements 3 are circular-segment-shaped or sail-like.
- the wing elements 3 are pivotably mounted by means of the pivoting device 5 about the pivot axis S between an action position and a rest position.
- the wing elements 3 each have a projection 13, which is formed in the example as a an outer edge 14 of each wing element 3 extending nose or web. This projection 13 has the task of ensuring stability or a stable position of the wing element 3 in the action position.
- the hub member 4 for each wing member 3 each have a recess 15 in which a bearing surface 16 (see Fig. 4) is formed for abutment of the projection 13 of the wing member 3 in the action position.
- the wing elements 3 are arranged in the action position at a right angle to the base body 2.
- the base body 2 comprises a further contact surface 17 (see FIG. 4) against which a region of a surface 18 of the wing element 3 rests in the action position.
- the main body 2 has for each wing element 3 each have a recess 19, in which each one wing element 3 is retractable in the rest position.
- the recess 19 has a geometry adapted to a geometry of an outer contour of the wing element 3.
- the recess 19 of the base body 2 is circular segment-shaped, in particular quarter-circle, and further comprises an extension 20 adapted to the projection 13 of the wing element 3 and extending in the angular direction a and disposed on the outer edge 6 of the base body 2 in the radial direction
- the recess 19 is formed such that the surface 18 of the wing member 3 in the rest position shown in Fig. 3 with a surface 21 of the base body 2 is flush.
- each of the wing elements 3 on a side facing the projection 13 has a recess 25, which is formed as a depression or cutout of a facing away from the surface 18 of the wing member 3 pressure surface 26.
- a flow channel is formed, by means of which each one wing element 3 can be opened by a flow pressure or back pressure of a fluid when turning the impeller 1 from the rest position into the action position.
- the pressure surface 26 of the wing element 3 is planar in the present case, so that in the rest position it is arranged parallel to the base body 2.
- the wing elements 3 each have a curved concave pressure surface, in which case a surface of the recess 19 may be curved.
- the impeller 1 further comprises a coupling means 27, by means of which the impeller 1 can be coupled to a pump shaft.
- the coupling device is arranged on a side 28 of the base body 2 facing away from the wing elements 3 and has an annular, extending from the base body 2 in the direction of the rotation axis D.
- Projection part 29 which has a in the radial direction r outer wall 30 and an inner side 31.
- the inner side 31 of the protruding part 29 has a regular structure 32 formed over a circumference of the protruding part 29, which is designed to apply a corresponding structure of a wheel of the pump shaft and thus to rotationally secure coupling of the impeller 1 to the pump shaft.
- the coupling device further comprises an opening 33, which defines an interior of the hub member 4, and in which the pump shaft is receivable.
- Fig. 5 shows the impeller 1 with the wing elements 3 in the action position again, in Fig. 6, the impeller 1 is shown with the wing elements 3 in the rest position.
- the aim is to produce a delivery pressure for a fluid in a rotation of the impeller 1 in a first direction shown by an arrow 34, wherein upon rotation of the impeller 1 in a direction shown by an arrow 35 opposite second direction of the delivery pressure for Fluid should be minimized.
- the wing elements 3 between the rest position shown in Fig. 6 and the action position shown in Fig. 5 are pivotable.
- the flow channel formed by the intermediate space 24 and the recess 25 is particularly advantageous. If the impeller rotates in the first direction of rotation, then a fluid pressure is generated by a fluid, by which the wing elements 3 are moved out of the rest position automatically.
- the wing elements 3 are pivoted as long as the pivot axis S until the projection 13 abuts against the contact surface 16 of the recess 15 of the hub member 4. If the projection 13 on the contact surface 16, so the full action position is reached. In this position, a maximum delivery pressure for the fluid is generated by the impeller 1. If, however, the impeller 1 is rotationally moved in the second direction of rotation, then the wing elements 3 are pivoted by the flow pressure in the rest position, so that no more delivery pressure is generated for the fluid.
- Fig. 7 shows a pumping device 36 including two pump wheels 37, 38 and a pump shaft 39 again.
- the pump device 36 further comprises a rotor 40, which is a part of an electric motor, not shown.
- the impeller 38 is an impeller according to the embodiment shown above.
- the first impeller 37 is presently designed as a circulation pump of the pump device 36 and the second impeller 38 as a wastewater pump of the pump device 36.
- the interest is to minimize the delivery pressure generated by the second impeller 38 when using the first impeller 37 to circulate the fluid.
- the second impeller 38 is formed such that upon rotation of the pump shaft 39 in a first direction in the circulation of the fluid, the wing elements 3 of the second impeller 38 are arranged in the rest position. This ensures that when using the first impeller 37 no frictional force or no disturbing discharge pressure generated by the second impeller 38 and thus an improved efficiency is achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008009785A DE102008009785A1 (de) | 2008-02-19 | 2008-02-19 | Dynamisches Pumpenrad für eine Pumpe sowie eine Pumpeneinrichtung mit einem dynamischen Pumpenrad |
| PCT/EP2009/051595 WO2009103647A1 (de) | 2008-02-19 | 2009-02-11 | Dynamisches pumpenrad für eine pumpe sowie eine pumpeneinrichtung mit einem dynamischen pumpenrad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2255093A1 true EP2255093A1 (de) | 2010-12-01 |
| EP2255093B1 EP2255093B1 (de) | 2016-07-20 |
Family
ID=40848641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09712496.0A Active EP2255093B1 (de) | 2008-02-19 | 2009-02-11 | Dynamisches pumpenrad für eine pumpe sowie eine pumpeneinrichtung mit einem dynamischen pumpenrad |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8529207B2 (de) |
| EP (1) | EP2255093B1 (de) |
| KR (1) | KR20100118568A (de) |
| CN (1) | CN101952600B (de) |
| DE (1) | DE102008009785A1 (de) |
| NZ (1) | NZ587000A (de) |
| WO (1) | WO2009103647A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3008747B1 (fr) * | 2013-07-17 | 2016-01-08 | Implantation Et De Diffusion D Equipements Electro Hydrauliques S I D E Soc D | Pompe d'eaux usees |
| CN115163549B (zh) * | 2022-06-29 | 2025-11-11 | 湖南长潭泵业有限公司 | 一种无阻式叶片可调地加压水泵 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR802966A (fr) * | 1936-03-05 | 1936-09-19 | Jombart | Pompe centrifuge ou ventilateur réversible |
| GB528439A (en) * | 1938-05-13 | 1940-10-29 | Luigi Ghirardi | Improvements in or relating to fluid propelling and suction means by means of blades which automatically adjust themselves during working |
| US2383001A (en) * | 1943-05-03 | 1945-08-21 | John Spargo | Combined impeller and closure |
| US2570862A (en) | 1949-10-29 | 1951-10-09 | Gen Electric | Fluid pump with direction responsive impeller blades |
| US3033015A (en) * | 1960-08-30 | 1962-05-08 | Gen Motors Corp | Clothes washing machine and pump therefor having fixed and pivoted vane portions |
| US3272129A (en) * | 1963-12-18 | 1966-09-13 | Warner Machine Products Inc | Pumping system and pump therefor |
| US3301188A (en) * | 1964-06-18 | 1967-01-31 | Sta Rite Products Inc | Pump |
| IT1179626B (it) | 1984-04-30 | 1987-09-16 | Mes Sa | Girante a geometria variabile per pompe centrifughe a due mandate selezionabili mediante inversione del senso di rotazione particolarmente per impianti lavacristalli di autoveicoli |
| WO1994021920A1 (en) * | 1993-03-25 | 1994-09-29 | Manfred Sommer | Filling, fluid-transporting and pumping device |
| US5378124A (en) * | 1993-06-07 | 1995-01-03 | Maytag Corporation | Method and means for assembling a pump and motor |
| IL131060A0 (en) * | 1999-07-23 | 2001-01-28 | Maytronics Ltd | Rotary impeller |
| CN2477870Y (zh) * | 2001-03-27 | 2002-02-20 | 锦州俏牌实业有限公司 | 防结垢电热泵 |
| PT1585887E (pt) * | 2002-12-12 | 2008-10-28 | Corneliu Holt | Máquina hidráulica ou pneumática com pás inclináveis |
-
2008
- 2008-02-19 DE DE102008009785A patent/DE102008009785A1/de not_active Withdrawn
-
2009
- 2009-02-11 CN CN200980105741.3A patent/CN101952600B/zh not_active Expired - Fee Related
- 2009-02-11 EP EP09712496.0A patent/EP2255093B1/de active Active
- 2009-02-11 WO PCT/EP2009/051595 patent/WO2009103647A1/de not_active Ceased
- 2009-02-11 KR KR1020107016873A patent/KR20100118568A/ko not_active Withdrawn
- 2009-02-11 US US12/867,081 patent/US8529207B2/en not_active Expired - Fee Related
- 2009-02-11 NZ NZ587000A patent/NZ587000A/en not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009103647A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101952600A (zh) | 2011-01-19 |
| US8529207B2 (en) | 2013-09-10 |
| CN101952600B (zh) | 2014-07-02 |
| US20100310378A1 (en) | 2010-12-09 |
| NZ587000A (en) | 2012-05-25 |
| WO2009103647A1 (de) | 2009-08-27 |
| DE102008009785A1 (de) | 2009-08-20 |
| EP2255093B1 (de) | 2016-07-20 |
| KR20100118568A (ko) | 2010-11-05 |
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