EP3900160A1 - Moteur électrique doté d'une partie boîtier de stator - Google Patents

Moteur électrique doté d'une partie boîtier de stator

Info

Publication number
EP3900160A1
EP3900160A1 EP19817155.5A EP19817155A EP3900160A1 EP 3900160 A1 EP3900160 A1 EP 3900160A1 EP 19817155 A EP19817155 A EP 19817155A EP 3900160 A1 EP3900160 A1 EP 3900160A1
Authority
EP
European Patent Office
Prior art keywords
groove
stator housing
housing part
electric motor
channel
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.)
Pending
Application number
EP19817155.5A
Other languages
German (de)
English (en)
Inventor
Benjamin Mayer
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.)
SEW Eurodrive GmbH and Co KG
Original Assignee
SEW Eurodrive 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 SEW Eurodrive GmbH and Co KG filed Critical SEW Eurodrive GmbH and Co KG
Publication of EP3900160A1 publication Critical patent/EP3900160A1/fr
Pending 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
    • H02K9/16—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle wherein the cooling medium circulates through ducts or tubes within the casing
    • 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
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets

Definitions

  • the invention relates to an electric motor with a stator housing part.
  • an electric motor has a rotor which is rotatably mounted relative to a stator housing part.
  • the stator housing part receives a stator winding.
  • the object of the invention is therefore to make a water-cooled electric motor inexpensive and with a high degree of protection.
  • stator housing part is made from a continuous casting profile part, in particular aluminum continuous casting profile part, the continuous casting profile part having axially continuous, spaced-apart channels, in particular being axially arranged in a center in the stator housing part
  • stator winding is arranged, the stator housing part, in particular in its first axial end region, having a first groove which is open in the axial direction and in particular is introduced into a first axial end face of the stator housing part and which has at least a first channel and a second channel in the circumferential direction connects, the stator housing part, in particular in its second axial end region, a second, open against the axial direction, in particular in a second axial end face of the Has introduced stator housing part, groove which connects at least the second channel with a third channel in the circumferential direction.
  • the stator housing part can be produced easily and without effort. Because a continuous casting profile part can be used, in which recesses for the formation of channels and a central cylindrical recess can be provided, in which the stator winding can be received.
  • the continuous cast profile part only has to be cut off at both axial ends, an axially protruding centering collar cutting
  • Both grooves do not run around completely in the circumferential direction, but each connect channels of the continuous cast profile part.
  • a flat gasket is placed on the front, which thus covers the groove.
  • an O-ring is received in a circumferential ring groove which is open radially outwards. The O-ring accommodated in the ring groove seals against the bearing flange
  • a rotor of the electric motor is rotatably supported by means of at least one bearing, the bearing being received in a bearing flange which is connected to the
  • Stator housing part is connected.
  • the advantage here is that the stator winding can be heated by means of the stator housing part through which a cooling medium flows.
  • a rotor of the electric motor is rotatably supported by means of at least one bearing, the bearing being accommodated in a bearing flange, in particular which is connected to the stator housing part by means of screws, an intermediate part being arranged between the bearing flange and the stator housing part, wherein the intermediate part has a first centering collar protruding in the axial direction from the intermediate part, in particular which bears against the axially continuous recess arranged centrally in the stator housing part,
  • Stator housing part is designed, wherein the intermediate part has a second, against the axial direction from the intermediate part protruding centering collar, in particular which rests on the bearing flange.
  • stator housing part having the channels can be produced by cutting off a continuous casting profile part, the respective cutting surface being flat and being unlimited both in the radial direction and in the circumferential direction.
  • the bearing flanges for the bearing of the rotor are centered by means of the intermediate part, which has a centering collar which protrudes axially from the intermediate part, so that this centering collar rests and is centered on the stator housing part.
  • a flat seal is arranged between the intermediate part and the stator housing part, in particular wherein the flat seal rests on the end face of the stator housing part.
  • stator housing part has a cylindrical one
  • stator winding Inner surface which faces the stator winding and / or on which the stator winding rests.
  • the advantage here is that the stator winding is shaped.
  • the stator winding is limited radially outwards by the cylindrical inner surface.
  • the circumferential angle range covered by the first groove in the circumferential direction is less than 360 ° and
  • the circumferential angle range covered by the second groove in the circumferential direction is less than 360 °.
  • the advantage here is that channels can be connected to one another by means of the first or second groove.
  • the first groove is on the first face of the
  • Stator housing part and the second groove arranged on the second end face of the stator housing part.
  • the radial distance areas covered by the channels overlap one another or are the same, in particular the smallest radial distance of each of the channels being identical.
  • the advantage here is that the first and the second groove can be arranged at a constant radial distance, that is, they can be designed as annular grooves extending in the circumferential direction.
  • the first groove is formed from two or more groove regions, the groove regions being spaced apart from one another in the circumferential direction, in particular wherein the second groove is formed from a number of groove regions which is reduced by one compared to the number of the first groove forming groove areas.
  • the advantage here is that a respective group of channels can be connected by means of the respective groove area and thus a meandering flow through the stator housing part can be effected.
  • Circumferential angle area overlaps and with a second groove area on the second end face of the stator housing part covered circumferential angle area.
  • the groove is designed as a single or multiple interrupted ring groove, in particular as an annular groove that is open everywhere along the groove in the axial direction, in particular wherein the ring axis of the ring groove is coaxial with the axial direction of the electric motor.
  • Machining tool in particular turning tool or milling tool, is simply or repeatedly moved axially into or pulled out of the continuous casting when machining the annular groove.
  • the number of groove areas is determined during manufacture by the number of axial movements.
  • a first groove area of the first groove connects the first channel to the second channel and a second groove area of the first groove connects a third channel to a fourth channel, a first groove area of the second groove connecting the second channel to the third channel and the second groove area of the second groove connects the fourth channel to another channel.
  • a connection for coolant, in particular water is attached to the stator housing part, which opens into the first channel, in particular wherein another connection for coolant, in particular water, is attached to the stator housing part, which opens into a channel spaced from the first.
  • an inlet must be attached to a first of the channels and an outlet for the cooling medium, in particular water, to another.
  • the intermediate part is axially on both sides
  • the advantage here is that a bearing flange can be aligned on the centering collar and thus the axis of the rotor of the electric motor is aligned coaxially with the cylinder axis of the cylindrical inner surface.
  • the radial distance here always refers to the distance to the axis of rotation of the rotor.
  • the stator housing part has, in particular radially outside the centering collar, a flat cutting surface on both end faces, the normal direction of which is aligned parallel to the axial direction, in particular the cutting surface delimiting the groove, the channels and the stator housing part in the axial direction or opposite to the axial direction .
  • the advantage here is that the annular groove can be introduced in a simple manner.
  • the flat surface can be used as a contact surface for a flat gasket.
  • the respective bearing flange has an annular groove, which in the circumferential direction preferably completely encircles the respective centering collar of the respective intermediate part, and in particular is continuous.
  • the centering collar is completely circumferential, in particular continuously, in the circumferential direction.
  • stator housing part has a discrete one
  • Rotational symmetry in particular with a 90 ° angle of rotation, with the axis of symmetry being the axis of rotation of the rotor of the electric motor.
  • the advantage here is that a particularly simple production is possible.
  • the respective groove is covered by a respective flat seal, which is arranged between the stator housing part and a respective intermediate part, the respective intermediate part, in particular by means of respective screws, to the
  • Stator housing part is pressed, in particular with the flat gasket being arranged radially outside the centering collar, in particular with a gasket being arranged on the centering collar projecting axially from the continuous casting profile part and sealing toward the bearing flange.
  • Flat gasket is sealed to the outside and is sealed inwards by means of the O-ring between the stator housing part and the bearing flange.
  • the flat seal is arranged at a first axial position between the bearing flange and the stator housing part, the flat seal being arranged at a second axial position between the bearing flange and the stator housing part, the first axial position being arranged closer to the channels than the second axial position, in particular wherein the radial distance area covered by the flat seal is arranged radially outside the radial distance area covered by the seal. It is advantageous that the flat seal seals against the external environment and the seal seals against the intermediate part.
  • FIG. 2 An electric motor according to the invention is shown exploded in an oblique view in FIG. In Figure 2, the electric motor is shown from a different direction.
  • FIG. 3 shows the stator housing part 1 of the electric motor in an oblique view.
  • FIG. 4 shows a longitudinal section through the electric motor modified on the A side.
  • FIG. 4 A section of FIG. 4 is shown enlarged in FIG.
  • the electric motor has a stator housing part 1 made from a continuous cast part.
  • a stator winding 50 is provided in the stator housing part 1.
  • the rotor 41 of the electric motor is rotatably supported by bearings which are accommodated in flange parts 3 and 4, that is to say bearing flanges.
  • the A-side bearing flange 3 is made of metal, such as steel or aluminum, as a machined cast part.
  • the B-side bearing flange 4 is made from a continuous cast section.
  • the flange parts 3 and 4 are connected to the stator housing part 1 by means of screws, a respective intermediate part 5 being axially interposed.
  • the stator housing part 1 is arranged axially between the two intermediate parts 5 and / or between the two flange parts (3, 4).
  • the intermediate part 5 has a centering collar (6, 7) axially on both sides.
  • the first centering collar 6 of the B-side intermediate part 5 protrudes in the axial direction, the second centering collar against the axial direction.
  • the other intermediate part 5 is the reverse.
  • the respective intermediate part 5 is centered with its first centering collar 6 on the inner circumference of the continuous casting profile part 1.
  • the end face is easy to machine and an annular groove can be made very deep axially.
  • the stator housing part 1 has axially continuous channels 33 which are separated and spaced apart in the circumferential direction and which are used for the passage of the coolant. These channels 33 can be produced without additional effort, since they are in the direction of pull
  • the stator housing part 1 Radially inwards, ie towards the stator winding, the stator housing part 1 is shaped as an inner cylinder.
  • the channels 33 are arranged radially outside of the inner cylinder and can be produced in a continuous casting without any special effort and in a material-saving manner.
  • Centering collar 6 centers the intermediate part 5 directly on the inner cylinder. So that's it
  • Intermediate part 5 has a flat shape on its end face opposite the end face of the continuous casting profile part, so that a flat seal 21 arranged between the continuous casting profile part and intermediate part 5 can be pressed uniformly and thus the channels can be sealed.
  • Centering collar 20 is arranged and is thus covered by this flat seal 21 after placing a flat seal 21 on the axial end face of the continuous casting profile part. Since the flat gasket is pressed onto the flat surface areas of the end face of the continuous cast profile part, a high degree of protection, ie a high level of tightness, can be achieved.
  • the groove 32 thus enables coolant, in particular water, to pass from a first of the channels 33 to a second of the channels 33. Because the channels 33 extend in the axial direction, the groove 32, however, extends in the circumferential direction.
  • Such a groove 32 is also on the second axial side of the continuous casting profile part
  • the groove 32 is not completely circumferential in the circumferential direction in the first axial end region. All channels 33 which open into the groove are thus connected by means of the groove 32 for coolant exchange. In other words, the groove 32 is simply contiguous in the circumferential direction, in particular thus continuously or in one piece.
  • This groove 32 is thus composed of a plurality of groove areas spaced apart from one another.
  • the coolant flowing in via the connection 2 arranged on the stator housing part 1 and flowing radially through the housing surface up to a channel for coolant, in particular water, from this channel to the connected one Groove region 32 can be passed through as a distributor and from this groove region 32 acting as a distributor into another channel, from which the coolant then flows into the other groove 32 on the side axially facing away from the groove region 32 and from there through a further connection to the outside.
  • the ends of the stator winding are guided in the terminal box arranged on the outside of the stator housing part, in which a terminal board is arranged, so that supply lines can be electrically connected.
  • the intermediate part 5 is centered with its other centering collar 7 on the inner cylindrical surface of the second flange part 4.
  • the flange part 4 is sealed off from the intermediate part 5 by means of an O-ring 31.
  • the second flange part 4 is also designed as a further continuous casting profile part, the second flange part 4 having a machined casting part on its side facing away from the continuous casting profile part, which receives a bearing and is screw-connected to the further continuous casting profile part.
  • the intermediate part 5 arranged on the A side is likewise centered with its first centering collar on the inner surface of the continuous casting profile part and thus by means of a further one
  • each of the grooves 32 is subdivided into a plurality of groove regions, so that a meandering flow through the stator housing part 1 is made possible.
  • the first groove 32 that is to say the groove 32 arranged in the first axial end region, is composed of N groove regions, where N is a natural number.
  • the other groove 32 that is to say the groove 32 arranged in the other axial end region, is composed of N + 1 groove regions.

Abstract

L'invention concerne un moteur électrique comportant une partie boîtier de stator composée d'un profilé de coulée continue, notamment d'un profilé de coulée continue en aluminium, le profilé de coulée continue présentant des conduits axialement traversants, espacés les uns des autres. La partie boîtier de stator présente, notamment dans sa première partie d'extrémité axiale, une première rainure ouverte dans la direction axiale, notamment pratiquée dans un premier côté frontal axial de la partie boîtier de stator, reliant au moins un premier conduit et un deuxième conduit dans la direction périphérique. La partie boîtier de stator présente, notamment dans sa deuxième partie d'extrémité axiale, une deuxième rainure ouverte contre la direction axiale, notamment pratiquée dans un deuxième côté frontal axial de la partie boîtier de stator, reliant au moins le deuxième conduit et un troisième conduit dans la direction périphérique.
EP19817155.5A 2018-12-20 2019-12-04 Moteur électrique doté d'une partie boîtier de stator Pending EP3900160A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018009930 2018-12-20
PCT/EP2019/025434 WO2020126076A1 (fr) 2018-12-20 2019-12-04 Moteur électrique doté d'une partie boîtier de stator

Publications (1)

Publication Number Publication Date
EP3900160A1 true EP3900160A1 (fr) 2021-10-27

Family

ID=68835147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19817155.5A Pending EP3900160A1 (fr) 2018-12-20 2019-12-04 Moteur électrique doté d'une partie boîtier de stator

Country Status (3)

Country Link
EP (1) EP3900160A1 (fr)
DE (1) DE102019008413A1 (fr)
WO (1) WO2020126076A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112413055A (zh) * 2020-10-16 2021-02-26 苏州创轩激光科技有限公司 一种型材换向器及其制作方法
US11837935B2 (en) 2021-02-02 2023-12-05 Black & Decker, Inc. Canned brushless motor
WO2023110382A1 (fr) 2021-12-13 2023-06-22 Sew-Eurodrive Gmbh & Co. Kg Moteur électrique équipé d'un frein à actionnement électromagnétique
DE102023003055A1 (de) 2022-09-12 2024-03-14 Sew-Eurodrive Gmbh & Co Kg Umrichtermotor, aufweisend einen Elektromotor und einen Umrichter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007035271A1 (de) * 2007-07-27 2009-01-29 Continental Automotive Gmbh Elektromotor
DE102010050348B4 (de) * 2010-11-05 2022-05-25 Sew-Eurodrive Gmbh & Co Kg Elektromotor und Bausatz zu seiner Herstellung
DE102010054027A1 (de) * 2010-12-09 2012-06-14 Sew-Eurodrive Gmbh & Co. Kg Getriebemotor
DE102011008523B4 (de) * 2011-01-13 2015-03-26 Sew-Eurodrive Gmbh & Co Kg Elektromotor

Also Published As

Publication number Publication date
DE102019008413A1 (de) 2020-06-25
WO2020126076A1 (fr) 2020-06-25

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