CA2201580A1 - Cooling arrangement for a motor type device taken among electric motors,compressors, inverters and the like - Google Patents
Cooling arrangement for a motor type device taken among electric motors,compressors, inverters and the likeInfo
- Publication number
- CA2201580A1 CA2201580A1 CA002201580A CA2201580A CA2201580A1 CA 2201580 A1 CA2201580 A1 CA 2201580A1 CA 002201580 A CA002201580 A CA 002201580A CA 2201580 A CA2201580 A CA 2201580A CA 2201580 A1 CA2201580 A1 CA 2201580A1
- Authority
- CA
- Canada
- Prior art keywords
- cooling
- set forth
- cooling arrangement
- segment
- casing
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- 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
Abstract
The motor type device comprises a smooth casing at least in an area that corresponds to heat releasing components, in particular pole pieces, and this smooth casing is covered by at least one segment of cooling member comprising an external sheet for at least one heat dissipator formed of a thin corrugated sheet, and a connecting means such as a heat conducting glue that connects the at least one segment of cooling member to the casing by forming circulation channels for a cooling gas which circulates therethrough.
Description
~ 210 ~ 5 8 ~) FIELD OF THE INVENTION
The present inventlon relates generally to cooling of heat generating components, and typically cooling of electric motors, compressors, inverters and the like.
PURPOSE AND BACKGROUND OF THE INVENTION
Some electric motors comprise an outer casing provided with fins used as heat dissipators for the heat that is produced by the motor and released in particular by pole pieces of the motor.
In some motor designing, the motors have a smooth casing and an inner cooling circuit, which makes possible to reduce the weight of the motor. However, it has been found that these motors could not easily be used for example in compact conditioning units in which the motor as well as the compressor, the inverter and the various Z0 attachments associated thereto, are themselves arranged in a housing. Moreover, cooling is made difficult for seal-tight motors.
Such compact units are used in various applications, for example in aeronautics, and it is necessary to provide a cooling of the components of the motor by a circulation of a fluid, for example air.
The purpose of the invention is to solve the above mentioned problem by providing the motors, compressors and other elements, with complementary means that make possible to ensure with a great efficacity the cooling thereof without substantially increasing their weight, while occupying only a very small space in the housing, box or container in which the relative machines are arranged.
~ ~ 2~ 5 8 0 SUMMARY OF THE INVENTION
According to the invention, the cooling arrangement for electric motors, compressors, inverters and other devices connected together and provided with means for circulating a cooling gas, is characterized in that the motor type device comprises a smooth casing at least in an area that corresponds to heat releasing components, in particular pole pieces, and in that this smooth casing is covered by at least one segment of cooling member comprising an external sheet for at least one heat dissipator formed of a thin corrugated sheet, and a connecting means such as a heat conducting glue that connects the at least one segment of cooling member to the casing by forming circulation channels for the cooling gas which circulates therethrough.
Various other features of the invention are moreover revealed from the detailed following disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
Embodiments of the invention are shown as non-limitative examples, in the accompanying drawings, wherein :
Fig. 1 is a diagrammatic cross-sectional elevation view of an electric motor embodying the cooling arrangement of the invention ;
Fig. 2 is a diagrammatic longitudinal cross-section of the motor of Fig. 1 provided with the cooling arrangement ;
Fig. 3 is a diagrammatic perspective view of a cooling unit of an other shape.
-~ ~ 232 0 1580 DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawings, Figs. 1 and 2 show a motor type device made of an electric motor 1 that is connected to a receiving machine 2 for driving the same, which receiving machine 2 is for example a compressor of an air conditioning unit that comprises an inverter generally shown as a parallelepiped 3 in Fig. 3.
The electric motor 1 comprises pole pieces 4 formed by packs of iron sheets that are maintained in a casing 5 of a cylindrical shape which is, or not, a part of the static magnetic circuit of the motor 1. The casing 5 is made of ferro-magnetic material in case it participates to the magnetic circuit of the motor, or is made of aluminum or the like material in case it does not participate to the magnetic circuit of the motor.
In a general manner, the aluminum alloys that are used in the latter case are moulded or manufactured from rolled sheets.
The casing 5 is connected to front parts 6, 7 that are preferably of a same material as the casing 5, and which carry bearing members 8, 9 for a shaft 15 that supports a rotor 11 for the motor 1.
As usual, the pole pieces 4 are provided with windings 12, and the rotor 11 with magnets 13.
The casing 5 of the motor 1 is surrounded, on all or part of its surface, and at least on the part of its surface that is opposed to the pole pieces 4, with a cooling member 14.
The present inventlon relates generally to cooling of heat generating components, and typically cooling of electric motors, compressors, inverters and the like.
PURPOSE AND BACKGROUND OF THE INVENTION
Some electric motors comprise an outer casing provided with fins used as heat dissipators for the heat that is produced by the motor and released in particular by pole pieces of the motor.
In some motor designing, the motors have a smooth casing and an inner cooling circuit, which makes possible to reduce the weight of the motor. However, it has been found that these motors could not easily be used for example in compact conditioning units in which the motor as well as the compressor, the inverter and the various Z0 attachments associated thereto, are themselves arranged in a housing. Moreover, cooling is made difficult for seal-tight motors.
Such compact units are used in various applications, for example in aeronautics, and it is necessary to provide a cooling of the components of the motor by a circulation of a fluid, for example air.
The purpose of the invention is to solve the above mentioned problem by providing the motors, compressors and other elements, with complementary means that make possible to ensure with a great efficacity the cooling thereof without substantially increasing their weight, while occupying only a very small space in the housing, box or container in which the relative machines are arranged.
~ ~ 2~ 5 8 0 SUMMARY OF THE INVENTION
According to the invention, the cooling arrangement for electric motors, compressors, inverters and other devices connected together and provided with means for circulating a cooling gas, is characterized in that the motor type device comprises a smooth casing at least in an area that corresponds to heat releasing components, in particular pole pieces, and in that this smooth casing is covered by at least one segment of cooling member comprising an external sheet for at least one heat dissipator formed of a thin corrugated sheet, and a connecting means such as a heat conducting glue that connects the at least one segment of cooling member to the casing by forming circulation channels for the cooling gas which circulates therethrough.
Various other features of the invention are moreover revealed from the detailed following disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
Embodiments of the invention are shown as non-limitative examples, in the accompanying drawings, wherein :
Fig. 1 is a diagrammatic cross-sectional elevation view of an electric motor embodying the cooling arrangement of the invention ;
Fig. 2 is a diagrammatic longitudinal cross-section of the motor of Fig. 1 provided with the cooling arrangement ;
Fig. 3 is a diagrammatic perspective view of a cooling unit of an other shape.
-~ ~ 232 0 1580 DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawings, Figs. 1 and 2 show a motor type device made of an electric motor 1 that is connected to a receiving machine 2 for driving the same, which receiving machine 2 is for example a compressor of an air conditioning unit that comprises an inverter generally shown as a parallelepiped 3 in Fig. 3.
The electric motor 1 comprises pole pieces 4 formed by packs of iron sheets that are maintained in a casing 5 of a cylindrical shape which is, or not, a part of the static magnetic circuit of the motor 1. The casing 5 is made of ferro-magnetic material in case it participates to the magnetic circuit of the motor, or is made of aluminum or the like material in case it does not participate to the magnetic circuit of the motor.
In a general manner, the aluminum alloys that are used in the latter case are moulded or manufactured from rolled sheets.
The casing 5 is connected to front parts 6, 7 that are preferably of a same material as the casing 5, and which carry bearing members 8, 9 for a shaft 15 that supports a rotor 11 for the motor 1.
As usual, the pole pieces 4 are provided with windings 12, and the rotor 11 with magnets 13.
The casing 5 of the motor 1 is surrounded, on all or part of its surface, and at least on the part of its surface that is opposed to the pole pieces 4, with a cooling member 14.
2 a o 1 5 ~ O
The cooling member 14 is formed with two sheets 15, 16 of copper, aluminum, nickel, or of an alloy thereof, with heat dissipators 17 being fixed therebetween by being brazed or fixed by another means such as a glue which can advantageously be a heat conducting glue and for example a glue loaded with a metal powder, in particular a powder of aluminum, copper or any suitable material.
Fig. 1 shows that the cooling member 14 can be formed by a plurality of segments or sectors 141, 142, 143 which are connected to the surface of the casing 5 and for example fixed by means of a suitable glue loaded with a metal powder.
In case, and when the cooling member 14 is formed by a plurality of segments or sectors, one or a plurality of binder hoops 18 can be provided for preventing any risk of separation of these segments or sectors.
The heat dissipators 17 are formed by thin corrugated metal sheets as illustrated by Figs. 1 and 3.
In addition to the above description, there is provided to position the cooling member 14 in a stream of air or other cooling gas in circulation, which is provided, in the illustrated example, by a hood 19 extending the cooling member 14 and in which is arranged a fan or a turbine 20 that is driven by the electric motor 1 or an independent motor (not shown).
The receiving machine 2, for example a compressor, is advantageously provided, at the periphery thereof, with cooling members 14 similar to the one of the electric motor 1 and which are similarly arranged.
- ~ 5 2 a 0 1 5 ~ 0 -When the receiving machine 2 is at a distance from one of the front parts 7 of the motor 1 as in the embodiment of Fig. 2, the cooling member 14 will protrude beyound the receiving machine 2 to be connected to the cooling s member 14, so that the stream of air circulating in the cooling member 14 of the motor will generate also a stream of air within the heat dissipator covering the receiving machine.
It is moreover advantageous to provide apertures or punctures 22 in the sheet 16 that forms the external casing of the cooling members 14, which apertures or punctures 22 are arranged from place to place and provided to aspirate cooler gases surrounding the sheets 16 that forms the casing of the cooling member.
Fig. 3 shows that a same type of cooling member 14 can be positioned on an inverter or other member 3 to which it is fixed as described above for example by means of an advantageously heat conducting glue. Fixation members 23, for example screws, can supplementarily connect the cooling member 14 to the inverter 3 to be used as safety components.
In a variant of embodiment, the internal sheet 15 of the cooling member 14 is no more used. In this case, the heat dissipators 14 are directly fixed, by means of their corrugations, onto the casing 5, inverter 3 or other like device to be cooled.
The glues that can be used for fixing the segments of the cooling members 14 are of various types. As an example, bi-component glues manufactured by the company CIBA have been used in the invention, in particular those having the references HV 998 et AV 138 and supporting a continuous temperature of 140~C and peaks 6 2 2 Q 1 5 ~ ~
of temperature of 200~C, as well as glues having the reference AV 4415 and AV 4416 and supporting a continuous temperature of 180~C. Other glues are satisfactory, for example the glue sold under the trademark 3M, reference AV 118 or 119 that supports a continuous temperature of 140~C and peaks of temperature of 200~C. Double-side adhesive films with a thickness of 5u sold also under the trademark 3M have permitted to support a continuous temperature of 150~C and peaks of temperature of 260~C during a time duration greater that 15 minutes.
The invention is not restricted to the embodiments shown and described in detail and various modifications 1S thereof can be applied thereto without departing from the scope of the invention as shown in the claims.
In particular, according to a variant of embodiment, the segments of the cooling member are removably mounted and maintained by a binding hoop or other suitable maintaining member. In this case, a conducting grease is preferably interposed between each of the segments of the cooling member and the device carrying it.
The cooling member 14 is formed with two sheets 15, 16 of copper, aluminum, nickel, or of an alloy thereof, with heat dissipators 17 being fixed therebetween by being brazed or fixed by another means such as a glue which can advantageously be a heat conducting glue and for example a glue loaded with a metal powder, in particular a powder of aluminum, copper or any suitable material.
Fig. 1 shows that the cooling member 14 can be formed by a plurality of segments or sectors 141, 142, 143 which are connected to the surface of the casing 5 and for example fixed by means of a suitable glue loaded with a metal powder.
In case, and when the cooling member 14 is formed by a plurality of segments or sectors, one or a plurality of binder hoops 18 can be provided for preventing any risk of separation of these segments or sectors.
The heat dissipators 17 are formed by thin corrugated metal sheets as illustrated by Figs. 1 and 3.
In addition to the above description, there is provided to position the cooling member 14 in a stream of air or other cooling gas in circulation, which is provided, in the illustrated example, by a hood 19 extending the cooling member 14 and in which is arranged a fan or a turbine 20 that is driven by the electric motor 1 or an independent motor (not shown).
The receiving machine 2, for example a compressor, is advantageously provided, at the periphery thereof, with cooling members 14 similar to the one of the electric motor 1 and which are similarly arranged.
- ~ 5 2 a 0 1 5 ~ 0 -When the receiving machine 2 is at a distance from one of the front parts 7 of the motor 1 as in the embodiment of Fig. 2, the cooling member 14 will protrude beyound the receiving machine 2 to be connected to the cooling s member 14, so that the stream of air circulating in the cooling member 14 of the motor will generate also a stream of air within the heat dissipator covering the receiving machine.
It is moreover advantageous to provide apertures or punctures 22 in the sheet 16 that forms the external casing of the cooling members 14, which apertures or punctures 22 are arranged from place to place and provided to aspirate cooler gases surrounding the sheets 16 that forms the casing of the cooling member.
Fig. 3 shows that a same type of cooling member 14 can be positioned on an inverter or other member 3 to which it is fixed as described above for example by means of an advantageously heat conducting glue. Fixation members 23, for example screws, can supplementarily connect the cooling member 14 to the inverter 3 to be used as safety components.
In a variant of embodiment, the internal sheet 15 of the cooling member 14 is no more used. In this case, the heat dissipators 14 are directly fixed, by means of their corrugations, onto the casing 5, inverter 3 or other like device to be cooled.
The glues that can be used for fixing the segments of the cooling members 14 are of various types. As an example, bi-component glues manufactured by the company CIBA have been used in the invention, in particular those having the references HV 998 et AV 138 and supporting a continuous temperature of 140~C and peaks 6 2 2 Q 1 5 ~ ~
of temperature of 200~C, as well as glues having the reference AV 4415 and AV 4416 and supporting a continuous temperature of 180~C. Other glues are satisfactory, for example the glue sold under the trademark 3M, reference AV 118 or 119 that supports a continuous temperature of 140~C and peaks of temperature of 200~C. Double-side adhesive films with a thickness of 5u sold also under the trademark 3M have permitted to support a continuous temperature of 150~C and peaks of temperature of 260~C during a time duration greater that 15 minutes.
The invention is not restricted to the embodiments shown and described in detail and various modifications 1S thereof can be applied thereto without departing from the scope of the invention as shown in the claims.
In particular, according to a variant of embodiment, the segments of the cooling member are removably mounted and maintained by a binding hoop or other suitable maintaining member. In this case, a conducting grease is preferably interposed between each of the segments of the cooling member and the device carrying it.
Claims (11)
1 - Cooling arrangement for a motor type device taken among electric motors, compressors, inverters and other devices connected together and provided with means for circulating a cooling gas, wherein said motor type device (1) comprises a smooth casing (5) at least in an area that corresponds to heat releasing components of said motor type device, in particular pole pieces thereof, and wherein said smooth casing is covered by at least one segment of cooling member (14), with said at least one segment of cooling member comprising an external sheet (16) for at least one heat dissipator (17) formed of a thin corrugated sheet, and a connecting means such as a heat conducting glue for connecting said at least one segment of cooling member (14) to said casing (5) by forming circulation channels for said cooling gas which circulates therethrough.
2 - Cooling arrangement as set forth in claim 1, wherein said external sheet (16) is provided with apertures or punctures (22).
3 - Cooling arrangement as set forth in claim 1, wherein an internal sheet (15) is connected to said at least one dissipator (17) and to said smooth casing (5).
4 - Cooling arrangement as set forth in claim 1, wherein at least said external sheet (16) is brazed to said at least one heat dissipator (17).
5 - Cooling arrangement as set forth in claim 3, wherein said internal sheet (15) is brazed to said at least one heat dissipator (17).
6 - Cooling arrangement as set forth in claim 1, wherein said at least one segment of cooling member (14) of a device formed by an electric motor (1) and a receiving machine (2) are connected together, whereby circulation of said cooling gas is provided from one to the other.
7 - Cooling arrangement as set forth in claim 1, wherein a binding hoop or other fixation means (23) is provided for maintaining said at least one segment of cooling member.
8 - Cooling arrangement as set forth in claim 1, wherein said cooling gas is moved by a fan or a turbine (20) driven by an electric motor (1), said fan or turbine being arranged in a hood (19) connected to said at least one segment of cooling member (14).
9 - Cooling arrangement as set forth in claim 1, wherein said at least one heat dissipator (17) is connected to said smooth casing (5) by a double-side adhesive film.
- Cooling arrangement as set forth in claim 3, wherein said internal sheet is connected to said smooth casing (5) by a double-side adhesive film.
11 - Cooling arrangement as set forth in claim 1, wherein each said at least one segment of cooling member is removably mounted with an interposition of a conducting grease.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9604189 | 1996-04-03 | ||
| FR9604189A FR2747183B1 (en) | 1996-04-03 | 1996-04-03 | COOLER FOR ELECTRIC MOTORS, COMPRESSORS, INVERTERS AND THE LIKE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2201580A1 true CA2201580A1 (en) | 1997-10-03 |
Family
ID=9490872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002201580A Abandoned CA2201580A1 (en) | 1996-04-03 | 1997-04-02 | Cooling arrangement for a motor type device taken among electric motors,compressors, inverters and the like |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0800256A1 (en) |
| JP (1) | JPH1052001A (en) |
| CA (1) | CA2201580A1 (en) |
| DE (1) | DE800256T1 (en) |
| ES (1) | ES2112236T1 (en) |
| FR (1) | FR2747183B1 (en) |
| IL (1) | IL120576A0 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277861A (en) * | 2018-03-16 | 2019-09-24 | 德昌电机(深圳)有限公司 | The electric machine assembly of bracket and the application bracket |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR407438A (en) * | 1909-09-28 | 1910-02-28 | Alsacienne Constr Meca | Cooling devices for closed dynamo-electric machines |
| DE645329C (en) * | 1932-12-29 | 1937-05-26 | Siemens Schuckertwerke Akt Ges | Arrangement to improve the cooling of closed electrical machines |
| DE1037577B (en) * | 1952-09-09 | 1958-08-28 | Heinrich Schloz | Device for guiding the cooling air flow in closed electrical machines with external fan |
| DE2226554A1 (en) * | 1972-05-31 | 1973-12-13 | Siemens Ag | ELECTRIC MACHINE |
| DE2542483B2 (en) * | 1975-09-24 | 1978-09-14 | Lloyd Dynamowerke Gmbh, 2800 Bremen | Arrangement for dissipating heat from the outer surface of an electrical machine |
| DE2950761A1 (en) * | 1978-12-28 | 1980-07-17 | Vyzk Vyvojovy Ustav Elektric | Ribbed casing for rotating machine - comprises steel sheet curved and folded to form radial external cooling ribs |
| JPH01107634A (en) * | 1987-10-20 | 1989-04-25 | Mitsubishi Electric Corp | Manufacture of motor frame with heat-dissipating fin |
| AU4832793A (en) * | 1993-09-02 | 1995-03-22 | Ket Kor Kft. | Unified machine arrangement of an electric machine and its control unit |
-
1996
- 1996-04-03 FR FR9604189A patent/FR2747183B1/en not_active Expired - Fee Related
-
1997
- 1997-04-01 IL IL12057697A patent/IL120576A0/en unknown
- 1997-04-02 CA CA002201580A patent/CA2201580A1/en not_active Abandoned
- 1997-04-02 ES ES97400763T patent/ES2112236T1/en active Pending
- 1997-04-02 EP EP97400763A patent/EP0800256A1/en not_active Withdrawn
- 1997-04-02 DE DE0800256T patent/DE800256T1/en active Pending
- 1997-04-03 JP JP9085079A patent/JPH1052001A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0800256A1 (en) | 1997-10-08 |
| FR2747183B1 (en) | 1998-05-29 |
| FR2747183A1 (en) | 1997-10-10 |
| JPH1052001A (en) | 1998-02-20 |
| ES2112236T1 (en) | 1998-04-01 |
| DE800256T1 (en) | 1998-04-30 |
| IL120576A0 (en) | 1997-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7455893B2 (en) | Motor assembly for driving a pump or rotating device having a power plane with a multilayer power and control printed circuit board assembly | |
| US5747900A (en) | Electric motor with an air-cooling system | |
| US7245056B2 (en) | Axial fan motor and cooling unit | |
| US5091666A (en) | Stator cooling system for electrical machinery | |
| US6369485B1 (en) | Rotor structure | |
| US4691131A (en) | Stator laminate impregnation in a liquid-cooled motor | |
| US20100176670A1 (en) | Machine cooling scheme | |
| JPH0851743A (en) | Motor with built-in inverter | |
| US20080136269A1 (en) | Rotary electric machine | |
| US4661734A (en) | Dynamoelectric machine | |
| US4754179A (en) | Dynamoelectric machine | |
| US4807354A (en) | Method of rearranging components of a dynamoelectric machine | |
| EP0503093A1 (en) | Liquid cooling device of motor | |
| US2787720A (en) | Cooling of electric machines | |
| WO2009144937A1 (en) | Heat dissipating mechanism for flat display television set | |
| JP2000184657A (en) | Squirrel-cage motor | |
| CA2201580A1 (en) | Cooling arrangement for a motor type device taken among electric motors,compressors, inverters and the like | |
| EP3952073B1 (en) | Cooling system, electric motor and wind-power generator set | |
| US10923984B2 (en) | Electric machine with improved dissipation of waste heat | |
| JPS62233041A (en) | Stator assembly of generator/motor | |
| US2692956A (en) | Totally-enclosed high-frequency generator | |
| JP2001169510A (en) | Ac power generator for vehicle | |
| WO2023062726A1 (en) | Electric motor | |
| EP3958445B1 (en) | Cooling system, electric motor and wind-power electric generator set | |
| JPH0819243A (en) | Method of electromagnetic induction driving, electromagnetic induction driving apparatus using the method and application method of the apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |