WO2022175520A1 - Pump with an electronic housing and a heat sink - Google Patents
Pump with an electronic housing and a heat sink Download PDFInfo
- Publication number
- WO2022175520A1 WO2022175520A1 PCT/EP2022/054235 EP2022054235W WO2022175520A1 WO 2022175520 A1 WO2022175520 A1 WO 2022175520A1 EP 2022054235 W EP2022054235 W EP 2022054235W WO 2022175520 A1 WO2022175520 A1 WO 2022175520A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- intermediate piece
- heat sink
- opening
- motor housing
- pump
- Prior art date
Links
- 239000013013 elastic material Substances 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 241000937413 Axia Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280016171.6A CN116981849A (en) | 2021-02-22 | 2022-02-21 | Pump with electronic device housing and cooling body |
EP22706841.8A EP4295050A1 (en) | 2021-02-22 | 2022-02-21 | Pump with an electronic housing and a heat sink |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021000933.9A DE102021000933A1 (en) | 2021-02-22 | 2021-02-22 | Pump with electronics housing and heat sink |
DE102021000933.9 | 2021-02-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022175520A1 true WO2022175520A1 (en) | 2022-08-25 |
Family
ID=80595315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/054235 WO2022175520A1 (en) | 2021-02-22 | 2022-02-21 | Pump with an electronic housing and a heat sink |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4295050A1 (en) |
CN (1) | CN116981849A (en) |
DE (1) | DE102021000933A1 (en) |
WO (1) | WO2022175520A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4963778A (en) * | 1986-12-13 | 1990-10-16 | Grundfos International A/S | Frequency converter for controlling a motor |
WO2013092534A1 (en) * | 2011-12-23 | 2013-06-27 | Grundfos Holding A/S | Electric motor |
WO2013135465A1 (en) * | 2012-03-15 | 2013-09-19 | Grundfos Holding A/S | Electric motor |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 (en) | 2005-07-14 | 2010-05-12 | Siemens Ag | converter motor |
DE102005041136B4 (en) | 2005-08-30 | 2023-11-02 | Sew-Eurodrive Gmbh & Co Kg | Inverter motor and process |
-
2021
- 2021-02-22 DE DE102021000933.9A patent/DE102021000933A1/en active Pending
-
2022
- 2022-02-21 EP EP22706841.8A patent/EP4295050A1/en active Pending
- 2022-02-21 WO PCT/EP2022/054235 patent/WO2022175520A1/en active Application Filing
- 2022-02-21 CN CN202280016171.6A patent/CN116981849A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4963778A (en) * | 1986-12-13 | 1990-10-16 | Grundfos International A/S | Frequency converter for controlling a motor |
WO2013092534A1 (en) * | 2011-12-23 | 2013-06-27 | Grundfos Holding A/S | Electric motor |
WO2013135465A1 (en) * | 2012-03-15 | 2013-09-19 | Grundfos Holding A/S | Electric motor |
Also Published As
Publication number | Publication date |
---|---|
DE102021000933A1 (en) | 2022-08-25 |
EP4295050A1 (en) | 2023-12-27 |
CN116981849A (en) | 2023-10-31 |
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