US20210231125A1 - Fan comprising a cooling body consisting of heat-conductive plastic - Google Patents

Fan comprising a cooling body consisting of heat-conductive plastic Download PDF

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Publication number
US20210231125A1
US20210231125A1 US15/734,809 US201915734809A US2021231125A1 US 20210231125 A1 US20210231125 A1 US 20210231125A1 US 201915734809 A US201915734809 A US 201915734809A US 2021231125 A1 US2021231125 A1 US 2021231125A1
Authority
US
United States
Prior art keywords
cover
fan
cooling
electronic system
area
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
Application number
US15/734,809
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English (en)
Inventor
Thomas Heli
Peter Riegler
Daniel GEBERT
Valerius Schaaf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebm Papst Mulfingen GmbH and Co KG
Original Assignee
Ebm Papst Mulfingen GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ebm Papst Mulfingen GmbH and Co KG filed Critical Ebm Papst Mulfingen GmbH and Co KG
Assigned to EBM-PAPST MULFINGEN GMBH & CO. KG reassignment EBM-PAPST MULFINGEN GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Gebert, Daniel, HELI, THOMAS, RIEGLER, PETER, SCHAAF, Valerius
Publication of US20210231125A1 publication Critical patent/US20210231125A1/en
Abandoned legal-status Critical Current

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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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/068—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
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5813—Cooling the control unit

Definitions

  • the invention relates to a fan comprising a cooling body embodied as a plastic cover.
  • a cooling body has the task of absorbing heat from an element to be cooled and releasing it again to a surrounding medium.
  • a material of high thermal conductivity such as aluminum or copper, is typically used for the cooling body.
  • Mass production of aluminum cooling bodies is typically done using the die casting process. For this purpose, heated aluminum in the liquid or sticky state is pressed, under high pressure, into a preheated steel mold which will later serve as a conductive cooling body.
  • Cooling bodies are also used for motors.
  • DE 19841583 A1 addresses a cooling body for cooling elements, in particular semiconductor components, motors and aggregates, in particular a cooling unit at least partially made of extruded aluminum or other light metal, consisting of at least two separate base profiles for mounting the electric components which are spaced apart from each other and interconnected by means of a plurality of separate cooling fins. Further, the assembly of at least one fan is provided between two adjacent base profiles.
  • heat conduction also known as heat diffusion or thermal conduction—is understood to mean the flow of heat induced by a difference in temperature.
  • heat conduction is a mechanism for transferring thermal energy without requiring a macroscopic flow of material as with the alternative mechanism of convection. Heat transfer through heat radiation is also considered as a separate mechanism.
  • a measure of heat conduction in a particular substance is thermal conductivity.
  • the object of the invention is therefore to provide cooling for the electronic system of a fan motor of a fan, which can be produced cost-effectively and works reliably.
  • a basic idea of the present invention is to cool the electronic system of a fan using a plastic cooling body instead of a metal cooling body.
  • This approach which is unknown in the prior art, can be realized by using the cooling body as a cover with a very thin wall thickness having a specific form and surface.
  • a fan comprising an electronic system on a printed circuit board, wherein, above the electronic system, a cover is provided which works both as an active cooling body and a passive cooling body, wherein, for this purpose, the cover is designed substantially as a flat covering element consisting of a thin-walled plastic and has a form with a surface effective for the cooling of the electronic system arranged beneath the cover, said surface being larger than the projected base area of the cover by a factor of at least 2.
  • the cover has a cooling fin structure with a plurality of cooling fins which increase the effective surface.
  • the cover forms a plurality of recesses in which fastening holes are provided at which the cover is detachably fastened to the fan by releasable fastening means.
  • the cover has, in the area of the cooling fin structure, a flat contact side for directly contacting heat-producing components.
  • the cover has the cooling fin structure in one or more areas or forms a plurality of areas with such a cooling fin structure.
  • cooling fins are attached or formed to extend radially outwards, thereby implementing a structure open radially outwards and upwards which has an advantageous effect on production and the cooling effect.
  • cooling fins have a changing, in particular outwardly decreasing, wall thickness.
  • Other forms and configurations of the wall thickness are also conceivable to improve heat dissipation effects.
  • an overall smaller wall thickness is aimed for in order to achieve rapid heat dissipation and also to prevent heat build-up.
  • a further optimization is a solution in which the cover forms a flat contact surface on the bottom facing the electronic system and in which, in the assembled state, this contact surface at least partially abuts electronic components.
  • the cover is formed from a substantially round section integrally joined to a projection (preferably with a linearly extending lateral edge).
  • the material of the cover is a polyimide (PA), polyurethane (PUR), polycarbonate (PC) or polyethylene (PE).
  • PA polyimide
  • PUR polyurethane
  • PC polycarbonate
  • PE polyethylene
  • the thickness of the cover is smaller in the area parallel to the arrangement of the printed circuit board and/or the area of the flat contact surface than in a periphery or in the area of the cover extending towards the electronic system by a factor of at least 2.
  • the essential stabilizing properties can be placed in the periphery and the essential thermal properties in the flat area and the areas with the cooling fins.
  • FIG. 1 shows a schematic sectional view through a radial fan
  • FIG. 2 shows a perspective view of the radial fan of FIG. 1 ,
  • FIG. 3 shows a top view of the cover of the electronic system of the radial fan of FIG. 1 ,
  • FIG. 4 shows a perspective view of the cover of FIG. 3 .
  • FIG. 5 shows a sectional view of the cover of FIG. 3 .
  • FIG. 1 shows a schematic sectional view through a fan 1 , here a radial fan.
  • Fan 1 is embodied with an electronic system on a printed circuit board 2 .
  • a cover 10 according to the invention is shown which is embodied both as an active cooling body and a passive cooling body.
  • cover 10 is designed as a substantially flat covering element consisting of a thin-walled plastic and has a form with a surface 11 which is effective for the cooling of the electronic system arranged beneath cover 10 , said surface being larger than the projected base area of cover 10 by a factor of at least 2 due to the cooling fin structure with a plurality of cooling fins 12 as can be seen in FIG. 2 .
  • the cooling fins run or extend radially outwards.
  • Cover 10 is formed from a substantially central round section 17 integrally joined to a projection 18 with a straight lateral edge.
  • cover 10 forms a plurality of recesses 13 in which fastening holes 14 are provided.
  • cover 20 is detachably fastened to fan 1 by releasable fastening means 15 (e.g., screws).
  • cover 10 forms a flat contact surface 19 by which it at least partially abuts electronic components in the assembled state.
  • cooling fins 12 have a changing wall thickness, in particular slightly decreasing from bottom to top, and taper slightly, so to speak.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
US15/734,809 2018-08-03 2019-07-25 Fan comprising a cooling body consisting of heat-conductive plastic Abandoned US20210231125A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102018118925.7 2018-08-03
DE102018118925.7A DE102018118925A1 (de) 2018-08-03 2018-08-03 Lüfter mit Kühlkörper
PCT/EP2019/070049 WO2020025443A1 (fr) 2018-08-03 2019-07-25 Ventilateur avec refroidisseur en matière plastique thermoconductrice

Publications (1)

Publication Number Publication Date
US20210231125A1 true US20210231125A1 (en) 2021-07-29

Family

ID=67470397

Family Applications (1)

Application Number Title Priority Date Filing Date
US15/734,809 Abandoned US20210231125A1 (en) 2018-08-03 2019-07-25 Fan comprising a cooling body consisting of heat-conductive plastic

Country Status (5)

Country Link
US (1) US20210231125A1 (fr)
EP (1) EP3830425A1 (fr)
CN (2) CN209398636U (fr)
DE (1) DE102018118925A1 (fr)
WO (1) WO2020025443A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230070319A1 (en) * 2021-09-08 2023-03-09 Dell Products L.P. Fan covering with high recycle content and high thermal conductivity

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040041475A1 (en) * 2002-09-03 2004-03-04 Cichetti Michael D. Apparatus and method for cooling an electric motor
US20140217844A1 (en) * 2013-02-01 2014-08-07 Regal Beloit America, Inc. Electrical machines and methods of assembling the same
US20150263591A1 (en) * 2012-08-02 2015-09-17 Ebm-Papst Mulfingen Gmbh & Co. Kg Active cooling of a motor having an integrated cooling channel
US20160087511A1 (en) * 2013-05-29 2016-03-24 Spal Automotive S.R.L Electrical machine
US20170163122A1 (en) * 2015-12-04 2017-06-08 Ebm-Papst Mulfingen Gmbh & Co. Kg Cover device for an electronics housing of an electric motor
US20190145302A1 (en) * 2016-07-15 2019-05-16 Hanon Systems High voltage cooling fan motor unit

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3916791C3 (de) * 1988-10-28 1998-09-17 Valeo Sistemi Termici S P A Gebläse-Einbausatz einer Kraftwagenheizung
DE19841583A1 (de) 1998-09-11 2000-03-16 Glueck Joachim Kühlkörper mit mindestens zwei separaten Basisplatten
US6176299B1 (en) * 1999-02-22 2001-01-23 Agilent Technologies, Inc. Cooling apparatus for electronic devices
EP1419568B1 (fr) * 2002-08-01 2005-05-04 ebm-papst Mulfingen GmbH & Co.KG Moteur electrique a protection ip elevee
DE10321732B4 (de) * 2003-05-14 2013-08-01 Robert Bosch Gmbh Kühlung der Ansteuerung von Kühlgebläsen für Kraftfahrzeugmotoren
JP2005168133A (ja) * 2003-12-01 2005-06-23 Mitsuba Corp 電動モータ
ITBO20070791A1 (it) * 2007-11-30 2009-06-01 Spal Automotive Srl Macchina elettrica rotante e metodo di assemblaggio della stessa.
IT1394272B1 (it) * 2009-05-25 2012-06-06 Spal Automotive Srl Metodo per la realizzazione di una macchina elettrica.
DE102009045063C5 (de) * 2009-09-28 2017-06-01 Infineon Technologies Ag Leistungshalbleitermodul mit angespritztem Kühlkörper, Leistungshalbleitermodulsystem und Verfahren zur Herstellung eines Leistungshalbleitermoduls
WO2012042971A1 (fr) * 2010-09-29 2012-04-05 アイシン精機株式会社 Pompe électrique
DE102012010483A1 (de) * 2012-05-26 2013-11-28 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Bürstensystem für einen Elektromotor
KR101345703B1 (ko) * 2013-03-11 2013-12-30 주식회사 원진일렉트로닉스 차량의 블로어 모터 구동기용 히트싱크
DE102014112821A1 (de) * 2014-09-05 2016-03-10 Ebm-Papst Mulfingen Gmbh & Co. Kg Lüfter mit Leiterplattenkühlkreislauf
US10230290B2 (en) * 2014-09-08 2019-03-12 Regal Beloit America, Inc. Electrical machine and methods of assembling the same
DE202015105910U1 (de) * 2015-11-05 2015-11-19 Ebm-Papst Mulfingen Gmbh & Co. Kg Elektronikeinheit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040041475A1 (en) * 2002-09-03 2004-03-04 Cichetti Michael D. Apparatus and method for cooling an electric motor
US20150263591A1 (en) * 2012-08-02 2015-09-17 Ebm-Papst Mulfingen Gmbh & Co. Kg Active cooling of a motor having an integrated cooling channel
US20140217844A1 (en) * 2013-02-01 2014-08-07 Regal Beloit America, Inc. Electrical machines and methods of assembling the same
US20160087511A1 (en) * 2013-05-29 2016-03-24 Spal Automotive S.R.L Electrical machine
US20170163122A1 (en) * 2015-12-04 2017-06-08 Ebm-Papst Mulfingen Gmbh & Co. Kg Cover device for an electronics housing of an electric motor
US20190145302A1 (en) * 2016-07-15 2019-05-16 Hanon Systems High voltage cooling fan motor unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230070319A1 (en) * 2021-09-08 2023-03-09 Dell Products L.P. Fan covering with high recycle content and high thermal conductivity

Also Published As

Publication number Publication date
DE102018118925A1 (de) 2020-02-06
WO2020025443A1 (fr) 2020-02-06
CN112334668A (zh) 2021-02-05
EP3830425A1 (fr) 2021-06-09
CN209398636U (zh) 2019-09-17

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