EP4295050A1 - Pumpe mit elektronikgehäuse und kühlkörper - Google Patents
Pumpe mit elektronikgehäuse und kühlkörperInfo
- Publication number
- EP4295050A1 EP4295050A1 EP22706841.8A EP22706841A EP4295050A1 EP 4295050 A1 EP4295050 A1 EP 4295050A1 EP 22706841 A EP22706841 A EP 22706841A EP 4295050 A1 EP4295050 A1 EP 4295050A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- intermediate piece
- heat sink
- opening
- motor housing
- pump
- 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
- 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
- F04D13/0686—Mechanical details of the pump control unit
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5813—Cooling the control unit
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5893—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps heat insulation or conduction
Definitions
- the invention relates to a pump comprising a drive motor, at least one electronics housing and at least one heat sink for dissipating heat from the electronics housing, with an intermediate piece for thermally decoupling the heat sink from the motor housing being introduced between the heat sink and motor housing, and with the intermediate piece having at least one feedthrough opening for feeding through at least a component between the motor housing and the heat sink.
- Pumps consist of different components that generate waste heat independently of each other during pump operation.
- An electric motor is often used as the pump drive, and the waste heat generated during operation is dissipated via the motor housing.
- control electronics in particular a frequency converter, are provided, which are accommodated in a separate electronics housing.
- the electronics housing is installed on the motor housing in terms of a compact pump design.
- both housings i.e. the motor and the electronics housing, must be thermally decoupled from each other. The latter is usually equipped with its own heat sink to optimize heat dissipation.
- an intermediate piece was used between the heat sink of the electronics housing and the motor housing to provide the necessary thermal decoupling.
- the intermediate piece was, for example, a plastic part that separates the facing sides of the heat sink and the motor housing from one another. Since connecting cables are required between the electronics of the pump and the electric motor, e.g. for the connection of the stator to the power electronics of the frequency converter, the intermediate piece, the electronics housing with heat sink and the motor housing must have openings to provide feed-through openings for the connecting cables. Entry of spray water through these through-openings must be prevented, which is why these openings must be sealed off from the environment by special measures. In the past, either a sealing lip was sprayed directly into the area of the adapter or a separate sealing element, such as an O-ring, was used. However, this solution increases the assembly effort and the manufacturing costs of the pump.
- the aim of the present invention was to simplify the previous procedure and to achieve improved sealing in the area of the lead-through openings of the intermediate piece.
- the spacer which housing between Motorge and heat sink is introduced, to manufacture from an elastic material.
- the elasticity of the intermediate piece allows its defined compression in the area of the lead-through openings, which is achieved by a special geometry, ie suitable shaping of the heat sink, the motor housing and/or the intermediate piece.
- the formation of press edges on the heat sink and/or motor housing or an increase in the material thickness of the adapter in the area of the bushing opening of the adapter leads to increased compression of the adapter around its bushing opening when the pump is assembled.
- the intermediate piece is advantageously made of a thermally insulating material so that thermal decoupling between the two components, ie the motor housing and the heat sink or the electronics housing, is achieved.
- the heat sink and/or the motor housing are made from an electrically conductive material such as metal, in particular aluminum.
- electrical insulation is obviously important, which is achieved, among other things, by a minimum distance between the line and the wall of the opening.
- the intermediate piece which is made of an electrically insulating material, can be used for additional insulation of the passage area from an electrical line that is passed through.
- the intermediate piece in the region of the through-opening has an apron which extends from the surface of the intermediate piece and which preferably protrudes into the adjoining openings of the heat sink and/or the motor housing.
- the apron serves as a kind of insulating jacket that extends around the electrical line that is passed through. It is particularly preferred when the apron fits snugly against the opening wall of the heat sink and/or the motor housing, ie ideally completely lines the opening perimeter of the heat sink and/or the motor housing.
- the electronics housing or the cooling body provided there to the motor housing on the peripheral side and alternatively or additionally to the axial front end of the motor housing. It is preferred in this case if the intermediate piece at the axial end, i. H. the local end face of the motor housing is being introduced, this in turn is connected to the heat sink. In this case, provision can be made for the contact surface of the heat sink with the intermediate piece to be formed predominantly by cooling fins.
- the pump can be any type of pump with an integrated electronic control system.
- the pump is preferably designed as a centrifugal pump, particularly preferably as a heating circulating pump, which preferably operates with speed control by the integral control unit.
- Figure 1 a sectional view along the axial motor axis of the pump
- Figure 2 a detailed view of the contact area between motor housing and heat sink and the intermediate piece inserted between them and
- FIG. 3 a plan view of the axial end face of the motor housing.
- FIG. 1 shows a sectional view of the entire pump unit along its pump axis.
- the overall construction includes the hydraulic part 1 with pump impeller 1a, designed here as a centrifugal pump, in particular a heating circulating pump.
- the impeller 1a is connected to the rotor 6 of the electric motor 2 via the pump shaft 1b.
- the electric motor 2 consisting of rotor 6 and stator 5 is mounted within a Motorgeophu ses 2a, which is axially directly connected to the pump housing 1c.
- the pump 1 remote end of the motor housing 2a includes achenkör by 4, which is used to remove heat from the electronics housing 3.
- the heatsink 4 is provided with individual cooling fins 4a extending toward the axial end of the motor housing 2 from a heatsink base plate 4b.
- the heat sink base plate is directly connected to the electronics housing 3 or is part of the electronics housing 3.
- the electric motor 2 is electrically connected to the pump electronics, e.g. the power electronics of a frequency converter, via one or more stator plugs 7, which are accessible via an opening 2b (see Figure 3) in the axial end face of the motor housing 2 facing the electronics housing.
- the electronics housing 3 includes a corresponding bore 8 in the heat sink base plate 4b, which is aligned with the opening 2a of the motor housing when the pump is fully assembled. Electrical connection lines (not shown here) can be performed from the electronics housing 3 through the heat sink 4 and the wall of the electric motor housing 2a to the stator plugs 7 . In addition to the openings for the stator connection, further openings for other connections can be provided in the motor housing 2a and the heat sink base plate 4b.
- Both the motor housing 2a and the heat sink 4 are made of aluminum and are therefore both thermally and electrically conductive. During pump operation bes both the electric motor 2 and the electronics in the electronics housing 3 from heat generated that must be dissipated to the outside environment.
- a thermal decoupling between the electronics housing 3 and the motor housing 2a is created by inserting an intermediate piece 10 between the heat sink 4 and the axial end face of the motor housing 2a facing the electronic housing 3.
- the intermediate piece 10 is made of rubber and therefore has a significantly lower thermal conductivity than the motor housing 2a and the heat sink 4. Through the intermediate piece achieves direct contact between heat sink 4 and motor housing 2a and thus thermal decoupling.
- Corresponding lead-through openings 10a must be provided in the intermediate piece 10 for the implementation of the electrical and other connecting lines between the electronics housing 3 and the motor housing 2a.
- the area of the cable bushing mentioned above must also be protected.
- a stronger compression 12 of the elastic material of the intermediate piece 10 around the area of the bushing openings 10a is produced in a targeted manner.
- This increased compression of material 12 in the area around the lead-through opening 10a allows it to be sealed off better from the outside and entry of spray water into the electronics housing and/or motor housing is effectively prevented.
- this solution does not require the additional introduction of separate sealing elements.
- the compression 12 is achieved by a special geometric shape of the intermediate piece 10 in the area of the lead-through opening 10a contacting surfaces.
- the end face of the motor housing 2a shows a profile 2c running around the entire circumference of the openings 2a, which rises in the direction of the intermediate piece 10.
- the intermediate piece 10 can extend around the feed-through opening 10a and perpendicularly from the top and/or underside of the intermediate piece 10 having extending skirts 11a, 11b. These aprons 11a, 11b protrude into the bore 8 of the heat sink 4 and the opening 2a of the motor housing 2 and completely line the corresponding opening wall there.
- the electrically insulating properties of the spacer material serve as additional protection, ie insulation of the stator connection lines from the metallic motor housing wall or heatsink wall in the area of bores 2a, 8. This prevents possible electrical flashover from the current-carrying stator connections to the housing wall.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021000933.9A DE102021000933A1 (de) | 2021-02-22 | 2021-02-22 | Pumpe mit Elektronikgehäuse und Kühlkörper |
| PCT/EP2022/054235 WO2022175520A1 (de) | 2021-02-22 | 2022-02-21 | Pumpe mit elektronikgehäuse und kühlkörper |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4295050A1 true EP4295050A1 (de) | 2023-12-27 |
| EP4295050B1 EP4295050B1 (de) | 2025-02-19 |
| EP4295050C0 EP4295050C0 (de) | 2025-02-19 |
Family
ID=80595315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22706841.8A Active EP4295050B1 (de) | 2021-02-22 | 2022-02-21 | Pumpe mit elektronikgehäuse und kühlkörper |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4295050B1 (de) |
| CN (1) | CN116981849A (de) |
| DE (1) | DE102021000933A1 (de) |
| WO (1) | WO2022175520A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024101278A1 (de) | 2024-01-17 | 2025-07-17 | KSB SE & Co. KGaA | Geräuschoptimiertes System zum Antrieb einer Kreiselpumpe |
| DE102024101239A1 (de) | 2024-01-17 | 2025-07-17 | KSB SE & Co. KGaA | Geräuschoptimiertes System zum Antrieb einer Kreiselpumpe |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3642724A1 (de) * | 1986-12-13 | 1988-06-23 | Grundfos Int | Elektromotor mit einem frequenzumrichter zur steuerung der motorbetriebsgroessen |
| US5763969A (en) | 1996-11-14 | 1998-06-09 | Reliance Electric Industrial Company | Integrated electric motor and drive system with auxiliary cooling motor and asymmetric heat sink |
| DE102005032969B4 (de) | 2005-07-14 | 2010-05-12 | Siemens Ag | Umrichtermotor |
| DE102005041136B4 (de) * | 2005-08-30 | 2023-11-02 | Sew-Eurodrive Gmbh & Co Kg | Umrichtermotor und Verfahren |
| DE102007045815A1 (de) * | 2007-09-25 | 2009-04-09 | Magna Powertrain Ag & Co Kg | Getriebeeinheit |
| EP2607709B1 (de) * | 2011-12-23 | 2015-12-23 | Grundfos Holding A/S | Elektromotor |
| EP2639940B1 (de) | 2012-03-15 | 2014-09-24 | Grundfos Holding A/S | Elektromotor |
| CN208904821U (zh) * | 2018-11-22 | 2019-05-24 | 安徽鸿创新能源动力有限公司 | 电动汽车电机后端盖出线结构 |
-
2021
- 2021-02-22 DE DE102021000933.9A patent/DE102021000933A1/de active Pending
-
2022
- 2022-02-21 WO PCT/EP2022/054235 patent/WO2022175520A1/de not_active Ceased
- 2022-02-21 EP EP22706841.8A patent/EP4295050B1/de active Active
- 2022-02-21 CN CN202280016171.6A patent/CN116981849A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP4295050B1 (de) | 2025-02-19 |
| EP4295050C0 (de) | 2025-02-19 |
| CN116981849A (zh) | 2023-10-31 |
| DE102021000933A1 (de) | 2022-08-25 |
| WO2022175520A1 (de) | 2022-08-25 |
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