EP3577744A1 - Moteur électrique refroidi par air - Google Patents

Moteur électrique refroidi par air

Info

Publication number
EP3577744A1
EP3577744A1 EP18704397.1A EP18704397A EP3577744A1 EP 3577744 A1 EP3577744 A1 EP 3577744A1 EP 18704397 A EP18704397 A EP 18704397A EP 3577744 A1 EP3577744 A1 EP 3577744A1
Authority
EP
European Patent Office
Prior art keywords
fan
electric motor
housing
motor according
air
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.)
Withdrawn
Application number
EP18704397.1A
Other languages
German (de)
English (en)
Inventor
Bernd Tecklenburg
Nikolai Potozki
Nils Hemker
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.)
Franz Woelfer Elektromaschinenfabrik Osnabrueck GmbH
Original Assignee
Franz Woelfer Elektromaschinenfabrik Osnabrueck GmbH
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 Franz Woelfer Elektromaschinenfabrik Osnabrueck GmbH filed Critical Franz Woelfer Elektromaschinenfabrik Osnabrueck GmbH
Publication of EP3577744A1 publication Critical patent/EP3577744A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes

Definitions

  • the invention relates to an air-cooled electric motor with a housing, on which one end a mounting flange for receiving attachments, in particular a brake is arranged with a plurality of arranged on the outside of the housing, distributed over the housing circumference and substantially parallel to a longitudinal center axis of the Motors extending cooling fins, which can be overflowed by cooling air, and with a cooling air in motion staggering fan, which is driven by a fan motor, and with a cooling air in the direction of the cooling fins conductive fan shroud.
  • the fan is arranged coaxially with the shaft of the electric motor on the output side of the electric motor opposite side of the motor housing.
  • the fan can be driven directly by the motor shaft or motor independent by a separate fan motor.
  • the fan is located in a fan hood, which is flush with the arranged on the housing axial cooling fins. During operation, the fan draws in air from the outside. This air is routed through the fan cowl to possible attachments of the engine and past the mounting flange on the axial cooling fins.
  • attachments that are connected via the Motoranbauflansch with the motor housing, in its outer circumference must be smaller than at least one envelope of the axial cooling fins.
  • the envelope is described by the mental connection of the housing remote from the free ends of the axial cooling fins by means of straight lines.
  • the attachment parts are to be arranged in a construction space which is smaller than the space defined by the area defined by the base of the respective cooling ribs.
  • Object of the present invention is to improve a ventilated electric motor of the type mentioned above to the extent that the resulting in the known air-cooled engines space limitations are more flexible to handle.
  • an air-cooled electric motor according to the preamble of claim 1, wherein according to the invention the fan cowl is arranged between the mounting flange and the end of the housing opposite the mounting flange.
  • the length of the overall arrangement is reduced immediately.
  • the electric motor has at least one outlet opening for cooling air facing the cooling ribs.
  • the fan cowl configured an inflow of the cooling fins with cooling air in the axial direction of the electric motor is achieved.
  • the cooling air can thus flow freely over the cooling fins.
  • the fan cowl can also be limited to only one area of the housing, which results in a further reduction of the installation space in the direction of the longitudinal central axis for the air-cooled electric motor and thus enables a more flexible installation of the electric motor.
  • the fan cowling on an air duct whose cross-sectional area is designed according to the over the at least one outlet opening in the direction of the cooling fins releasable cooling air quantity decreasing. This ensures that the amount of air exiting through the outlet opening is distributed uniformly over the entire outlet area. Thus, regardless of the installation situation, regardless of the mounting direction, a uniform and reliable supply of cooling air and thus a corresponding cooling of the electric motor is ensured.
  • the cooling air leading air baffles are arranged in the fan cover.
  • the air baffles cause a uniform distribution of the cooling air flow within the fan cowl and favor a uniform distribution of the cooling air on the cooling fins of the housing. As a result, the reliable cooling of the electric motor is ensured regardless of the installation situation or the installation position.
  • the fan cover extends over the outer circumference of the housing.
  • the fan cover thus completely encloses the housing of the electric motor.
  • the fan cowling is formed by at least two fan cowl parts, each having a housing recess. As a result, the mounting of the housing on the outer circumference comprehensive fan cover is facilitated.
  • the fan cover is pivotable relative to the housing in the circumferential direction of the housing and can be fixed in different pivot positions on the housing.
  • the engine is again made more flexible with regard to the installation situation or the required installation space.
  • the fan guard in a position with other components such. B. the fan cover of another adjacent, identical electric motor is not possible, the fan cover of the electric motor can be pivoted on the housing and spent in an alternative mounting position in which the fan cover is sufficient space available.
  • the different pivot positions are arranged distributed over the full circumference of the housing for fixing the fan cover.
  • the fan cover can be screwed to the housing, for example.
  • the screw joints are here- preferably distributed over the circumference of the housing so that the fan cover can be set in different orientations on the electric motor.
  • a variation of the fan position relative to the housing is made possible by 360 degrees.
  • the individual installation positions may be offset by 90 degrees, for example in the case of a square basic shape, or may be made steplessly adjustable in a circular basic shape in a gradual manner or through the use of oblong holes.
  • the housing has a cooling fin-free fan hood area.
  • the distribution of the cooling air over the circumference of the housing is reliably enabled. The reliable distribution takes place regardless of the installation situation of the motor or the orientation of the fan guard.
  • the diameter of the mounting flange is greater than the diameter of an enveloping arranged on the housing cooling fins.
  • the fan cover is arranged directly adjacent to the mounting flange.
  • the cooling air can thus sweep the arranged on the housing axial cooling fins, without being affected by the mounting flange.
  • the cooling air can move the housing in the direction of Full coverage of the output side of the electric motor. As a result, a reliable air cooling of the electric motor is achieved.
  • the fan is fixed to the fan cover.
  • the fan can thus be arranged in the immediate vicinity of the housing of the electric motor. An air duct to the fan cover of the fan is not necessary. This leads to a more compact design of the electric motor.
  • the fan preferably has at least one protective roof at an air inlet.
  • the arrangement of a protective roof at the air inlet of the fan setting up the electric motor is also possible in unfavorable installation situations in which the air inlet is otherwise exposed to unfavorable environmental conditions. For example, setting up in outdoor areas is possible in which the air inlet of the fan without protective roof would be exposed directly to the weather.
  • the protective roof thus increases the flexibility with regard to the choice of the installation situation of the electric motor.
  • the electric motor on the fan motor on a fan motor air inlet at least partially overlapping fan motor protection roof.
  • a protective roof on the fan motor air inlet allows flexible installation of the air-cooled electric motor, as little on the installation direction and the installation situation resulting from the installation of the electric motor for the fan motor Consideration must be taken.
  • such a fan motor protection roof makes it possible to set up the electric motor in areas which are exposed to the effects of the weather or other environmental influences unfavorable for ventilation, without having to take into account the orientation of the fan motor air inlet when installing the electric motor.
  • FIG. 1 shows an embodiment of an electric motor according to the invention with air cooling in an isometric view
  • Fig. 2 the electric motor of FIG. 1 in a side view
  • Fig. 3 the electric motor of Fig. 1 in a view from the front side.
  • Fig. 1 shows an electric motor 2 with a housing 4 on which are arranged parallel to a longitudinal central axis 5 of the electric motor cooling fins 10.
  • the electric motor 2 has a fan 12, which is driven by a fan motor 14.
  • the fan 12 is connected via a fan cover 16 with the housing 4.
  • the housing 16 is designed in two parts and has a first housing part 18 and a second housing part 20.
  • the housing 4 is disposed immediately adjacent to a mounting flange 6 of the housing 4, to which a brake 8 is attached.
  • a protective cover 22 is arranged at the air inlet 21 of the fan 12, a protective cover 22 is arranged. This obstructs the entry of foreign bodies into the air inlet 21.
  • a fan motor protective roof 24 is arranged on the fan motor 14, which impedes the entry of foreign bodies into the fan motor air inlet 23.
  • Fig. 2 shows the electric motor 2 in a side view. Above and below the longitudinal center axis 5, two different brakes 8 are shown, which differ in their size. The brakes 8 are each arranged on the mounting flange 6.
  • Fig. 3 shows the electric motor 2 in an end view. It can be seen that the housing 4 of the electric motor 2 has a substantially round basic shape. The fan cover 16 is pivotable relative to the housing 4.
  • the fan cowl 16 can be fixed to this via fastening points 26 which are distributed over the circumference of the housing 4. Due to the round basic shape of the housing 4, the fan cover 16 is pivotable about this throughout. A fixing can take place in each case at the fastening points 26.
  • the arrangement of slots in the fan cover 16 is a further stepless pivoting of the fan cover 16 relative to the housing 4 is possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un moteur électrique refroidi par air qui comprend - un carter sur lequel est montée à une extrémité une collerette de montage destinée à recevoir des pièces rapportées, en particulier un frein, - une pluralité d'ailettes de refroidissement disposées sur la face extérieure du carter, réparties sur la périphérie du carter et sensiblement parallèles à un axe médian longitudinal du moteur électrique, lesdites ailettes de refroidissement pouvant être parcourues par l'air de refroidissement, - un ventilateur qui met l'air de refroidissement en mouvement et peut être actionné par l'intermédiaire d'un moteur de ventilateur ainsi qu'un capot de ventilateur qui guide l'air de refroidissement en direction des ailettes de refroidissement, le capot de ventilateur étant monté sur le carter entre la collerette de montage et l'extrémité du carter située à l'opposé de la collerette de montage (fig. 1).
EP18704397.1A 2017-01-31 2018-01-25 Moteur électrique refroidi par air Withdrawn EP3577744A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017000844.2A DE102017000844A1 (de) 2017-01-31 2017-01-31 Luftgekühlter Elektromotor
PCT/EP2018/000034 WO2018141472A1 (fr) 2017-01-31 2018-01-25 Moteur électrique refroidi par air

Publications (1)

Publication Number Publication Date
EP3577744A1 true EP3577744A1 (fr) 2019-12-11

Family

ID=61192837

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18704397.1A Withdrawn EP3577744A1 (fr) 2017-01-31 2018-01-25 Moteur électrique refroidi par air

Country Status (6)

Country Link
US (1) US20200144895A1 (fr)
EP (1) EP3577744A1 (fr)
CN (1) CN110419156A (fr)
BR (1) BR112019015397A2 (fr)
DE (1) DE102017000844A1 (fr)
WO (1) WO2018141472A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113541382A (zh) * 2021-07-15 2021-10-22 中车株洲电机有限公司 一种永磁电机及轨道机车
DE102023004256A1 (de) 2022-11-14 2024-05-16 Sew-Eurodrive Gmbh & Co Kg Elektromotor mit Statorgehäuse

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1108315B (de) * 1960-03-10 1961-06-08 Hans Still Ag Geschlossener Elektromotor fuer den Antrieb von Hebezeugen mit Oberflaechenkuehlung
JPS5241323A (en) * 1975-09-27 1977-03-30 Toyoda Autom Loom Works Ltd Heated air discharging device for motor used in a battery-driven fork lift
JPS6110458Y2 (fr) * 1977-06-22 1986-04-03
JPS5412804U (fr) * 1977-06-30 1979-01-27
JPS55153243A (en) * 1979-05-16 1980-11-29 Yaskawa Electric Mfg Co Ltd Cooling device for electric rotary machine
JPS5892871U (ja) * 1981-12-17 1983-06-23 三菱電機株式会社 他力通風全閉形回転電機
JPS58166268U (ja) * 1982-04-30 1983-11-05 東洋電機製造株式会社 回転電機の電動送風機
JPS61153472U (fr) * 1985-03-13 1986-09-22
JPS63105464U (fr) * 1986-12-25 1988-07-08
JPS6420067U (fr) * 1987-07-22 1989-01-31
JPH08322188A (ja) * 1995-05-26 1996-12-03 Meidensha Corp 強制通風冷却形電動機
DE102005060329A1 (de) * 2005-12-16 2007-06-21 Dietz-Motoren Gmbh & Co. Kg Hochdruckventilator
JP2007306722A (ja) * 2006-05-12 2007-11-22 Meidensha Corp 電動機の冷却構造
CN201450408U (zh) * 2009-06-04 2010-05-05 江苏益茂纯电动汽车有限公司 环绕式温控强制风扇冷却的电动机
CN201877950U (zh) * 2010-11-19 2011-06-22 江西特种电机股份有限公司 电机的风道式散热冷却装置
CN202068264U (zh) * 2011-05-16 2011-12-07 张金锋 气冷式马达外壳
US20130009497A1 (en) * 2011-07-05 2013-01-10 Chin-Feng Chang Motor housing with an air-cooling capability
CN202142953U (zh) * 2011-08-02 2012-02-08 中国神华能源股份有限公司 电机的空气冷却装置
DE102013203774A1 (de) * 2013-03-06 2014-09-11 Bayerische Motoren Werke Aktiengesellschaft Generator als Nebenaggregat für ein Fahrzeug
US9331550B2 (en) * 2013-06-17 2016-05-03 Honeywell International Inc. Air cooling of a motor using radially mounted fan

Also Published As

Publication number Publication date
US20200144895A1 (en) 2020-05-07
WO2018141472A1 (fr) 2018-08-09
CN110419156A (zh) 2019-11-05
BR112019015397A2 (pt) 2020-03-31
DE102017000844A1 (de) 2018-08-02

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