WO2023072427A1 - Moteur électrique comprenant un ventilateur et un couvercle de ventilateur - Google Patents

Moteur électrique comprenant un ventilateur et un couvercle de ventilateur Download PDF

Info

Publication number
WO2023072427A1
WO2023072427A1 PCT/EP2022/025461 EP2022025461W WO2023072427A1 WO 2023072427 A1 WO2023072427 A1 WO 2023072427A1 EP 2022025461 W EP2022025461 W EP 2022025461W WO 2023072427 A1 WO2023072427 A1 WO 2023072427A1
Authority
WO
WIPO (PCT)
Prior art keywords
fan
electric motor
adapter part
bearing
centering collar
Prior art date
Application number
PCT/EP2022/025461
Other languages
German (de)
English (en)
Inventor
Li Jinchang
Original Assignee
Sew-Eurodrive Gmbh & 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
Priority claimed from CN202111263061.3A external-priority patent/CN116032059A/zh
Application filed by Sew-Eurodrive Gmbh & Co. Kg filed Critical Sew-Eurodrive Gmbh & Co. Kg
Priority to EP22786752.0A priority Critical patent/EP4423881A1/fr
Publication of WO2023072427A1 publication Critical patent/WO2023072427A1/fr

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
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • 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 electric motor with a fan and fan cover.
  • a brake motor is known from DE 11 2017 003 578 T5.
  • the invention is therefore based on the object of designing improved heat dissipation in an electric motor.
  • the object is achieved with the electric motor according to the features specified in claim 1.
  • the electric motor is provided with a fan and a fan cover, the fan having a fan wheel with fan blades, the electric motor having a rotor shaft which is rotatably mounted via a first bearing and a second bearing, the first bearing is accommodated in a first bearing flange and the second bearing is accommodated in a second bearing flange, wherein a stator housing of the electric motor is connected to the second bearing flange and either to the first bearing flange or to an adapter part that is connected to the first bearing flange, wherein the fan wheel is mounted on the bearing from the first bearing, in particular on the bearing from the first bearing in the axial direction, facing away from the second bearing is connected to the rotor shaft in a rotationally fixed manner, the fan shroud surrounding the fan in the circumferential direction, the end face of the fan shroud being sealed, in particular without a continuous recess and/or watertight and/or airtight.
  • the advantage here is that the electric motor can be operated in such a mounting direction in which the axis of rotation of the rotor shaft is directed vertically.
  • the electric motor is thus protected from liquid that occurs in the axial direction, ie parallel to the axis of rotation of the rotor shaft, ie in particular from rain.
  • the fan cowl is designed to be closed at the front, ie in particular without continuous recesses.
  • the air conveyed by the fan passes through the fan cover in a radial direction. In this way, even when water hits the brakes, especially when it rains, undisturbed heat dissipation of the brakes is ensured.
  • the air flow sucked in or conveyed by the fan flows along the cooling ribs extending in the axial direction on the outer surface of the stator housing and thus also flows around the drum brake.
  • the cooling of the drum brake is thus improved by the air flow.
  • the fan wheel with fan blades is arranged radially inside the fan shroud, in particular with the fan wheel and the fan blades being spaced apart from the fan shroud in the radial direction.
  • the advantage here is that the fan hood only allows the radially directed passage of the air flow sucked in or conveyed by the fan. An axial passage is prevented because the fan cover is closed at the front.
  • the face of the fan cowl that faces away in particular from the stator housing is designed to be tight and/or closed, in particular watertight and/or gas-tight, in particular therefore without axially continuous recesses, in particular so that liquid arriving at the face from the axial direction can come from the rest of the electric motor, in particular is at least kept away from the stator housing and the two bearing flanges and from the adapter part and/or the fan.
  • the advantage here is that the electric motor can be mounted vertically outdoors and is therefore protected from the rain.
  • the radial spacing area covered by the end face of the fan cowl includes the bearing flanges and the fan wheel with fan blades and the radial distance area covered by the stator housing, in particular so that when the axis of rotation of the rotor shaft is aligned vertically, the rest of the electric motor is below the end face of the fan cowl is protected.
  • the advantage here is that the motor can be used vertically oriented outdoors. In particular, the engine can be protected from rainwater.
  • the fan shroud has a cylindrical design, in particular with the end face of the fan shroud being designed as a circular surface, and/or that a lateral surface, in particular a cylindrical lateral surface, of the fan shroud has radially continuous recesses, in particular which are regularly or evenly spaced from one another in the circumferential direction.
  • the advantage here is that simple production is made possible.
  • the outer diameter of the circular disk can be selected to be large enough that it exceeds the largest outer diameter in each of those planes whose normal direction is aligned parallel to the axis of rotation of the rotor shaft of the electric motor.
  • the fan cover is clip-connected to the second flange.
  • the advantage here is that a clip connection can be effected quickly and easily.
  • safety is improved because rotating parts cannot be touched.
  • the adapter part surrounds a brake drum of a drum brake, in particular radially, in particular the drum brake being electromagnetically actuable.
  • the advantage here is that the rotating shaft can be braked.
  • the adapter part has a centering collar which is designed to fit the centering collar of the first bearing flange with an exact fit
  • the adapter part has a centering collar which is designed to fit the centering collar of the stator housing with an exact fit.
  • the adapter part has a centering collar which is designed to fit the centering collar of the first bearing flange with an exact fit
  • the adapter part has a centering collar which is designed to fit the centering collar of the stator housing with an exact fit.
  • a shaft sealing ring is accommodated in the adapter part, which seals against the rotor shaft.
  • Centering collar of the adapter part connected via an annular wall, but in the circumferential direction is interrupted by at least one recess, in particular so that a flow of cooling air can be conveyed through the at least one recess, in particular for efficient cooling of the drum brake.
  • the advantage here is that efficient cooling can be achieved.
  • corner areas protruding in the radial direction are formed on the circumference of the adapter part, in particular the centering collar of the adapter part, which are spaced apart from one another in the circumferential direction, in particular regularly and/or evenly spaced, in particular with each of the corner areas having an axially continuous threaded bore, into which a screw can be screwed, which is passed through an axial bore of the stator housing, so that the screw head of the screw that is screwed in pushes the stator housing toward the adapter part.
  • the advantage here is that the corner areas can be adjusted according to the drilling pattern of the stator housing, so that the screws can be aligned in an axial direction and act as connecting screws.
  • corner areas protruding in the radial direction are formed on the circumference of the adapter part, in particular the centering collar of the adapter part, which are spaced apart from one another in the circumferential direction, in particular regularly and/or evenly spaced, in particular each of these corner areas having an axially continuous bore through which a screw can be passed, which is screwed into a threaded bore of the first bearing flange, so that after screwing in the screw, the screw head of the screw pushes the adapter part toward the first bearing flange.
  • the advantage here is that the corner areas can be adjusted according to the hole pattern of the first bearing flange, so that the screws can be aligned in an axial direction and act as connecting screws.
  • an actuating device of the drum brake is arranged on the adapter part, to which a connection box of a coil of the drum brake is fastened.
  • an actuating device for the drum brake and a connection box for a coil of the drum brake are arranged on the adapter part.
  • the advantage here is that the adapter part accommodates a drum brake and the brake drum can be arranged inside the adapter part and the actuating device and the associated connection box outside. Further advantages result from the dependent claims.
  • the invention is not limited to the combination of features of the claims. For the person skilled in the art, there are further meaningful combinations of claims and/or individual claim features and/or features of the description and/or the figures, in particular from the task and/or the task posed by comparison with the prior art.
  • FIG. 1 shows an electric motor according to the invention in a side view, partially sectioned.
  • FIG. 2 shows an adapter part 5 of the electric motor in an oblique view from a first viewing direction.
  • the adapter part 5 of the electric motor is shown in an oblique view from a second viewing direction.
  • FIG. 4 shows a fan cover 11 of the electric motor in an oblique view.
  • the electric motor has a rotor shaft 1 which is rotatably mounted via a first bearing 2, in particular a floating bearing, and a second bearing, in particular a fixed bearing.
  • the first bearing 2 is accommodated in a first bearing flange 3 and the second bearing in a second bearing flange 18, the first bearing flange 3 being connected to an adapter part 5 which is connected to the stator housing 8, and the second bearing flange 18 to the stator housing 8 is connected.
  • the stator housing 8 is interposed between the adapter part 5 and the second bearing flange 18.
  • the adapter part 5 is interposed between the first bearing flange 3 and the stator housing 8.
  • the first bearing flange 3 could be directly connected to the stator housing 8 if the adapter part 5 and the rotor shaft 1 together with all of the components connected non-rotatably to the rotor shaft 1 were left out. This is because the stator housing 8 has a centering collar 6 on which a centering collar 4 of the first bearing flange can bear.
  • An electric motor could thus be produced without the adapter part 5 and without the drum brake surrounded by the adapter part 5, with a correspondingly adapted rotor shaft being necessary.
  • the adapter part 5 By inserting the adapter part 5, the axial length of the electric motor is increased, but the functionality of a drum brake is added.
  • the drum brake enables braking even when the rotor shaft 1 is still rotating, in particular in contrast to a holding brake.
  • the adapter part 5 has a centering collar which fits the centering collar 4 of the first bearing flange, in particular is designed to fit precisely, and thus enables the first bearing flange 3 to be aligned and connected to the adapter part 5 with a high degree of protection.
  • the adapter part 5 has a centering collar, which interacts with the centering collar 6 of the stator housing 8, that is to say, in particular, it is designed to fit precisely thereto.
  • the adapter part 5 surrounds a drum brake radially, ie in particular completely in the circumferential direction.
  • a brake drum 7 is connected to the rotor shaft 1 in a torque-proof manner.
  • An actuating device 13 for the drum brake and also a connection box 14 for a coil of the electromagnetically actuatable drum brake are arranged on the adapter part 5 .
  • the drum brake enables a rotating rotor shaft 1 to be braked.
  • a holding brake can only be used for shafts that are essentially stationary.
  • the drum brake has a manual release lever 15 for manually operable release of the drum brake.
  • the invention enables the production of an electric motor with a drum brake and an electric motor without a drum brake, with only an adapter part 5 and a corresponding rotor shaft 1 having to be adapted. But by using a drum brake, a greater heat output is to be expected when braking, which has to be dissipated to the environment.
  • the heat output is very high when braking a rotating shaft. Therefore, on the stator housing 8 in the axial direction, ie parallel to the direction of the axis of rotation of the rotor shaft 1, running cooling ribs are formed and a cooling air flow flowing along the ribs is conveyed by a fan wheel with fan blades 17 which is connected to the rotor shaft 1 in a rotationally test manner.
  • a fan cover 11 is connected to the second bearing flange 18 and surrounds the fan wheel with the fan blades 17.
  • the front side of the fan hood 11 is designed with a closed surface. This is followed by a lateral surface which has continuous recesses, in particular continuous recesses spaced uniformly and/or regularly from one another.
  • the radial distance area covered by the end face of the fan cowl 11, in particular the radial distance area related to the axis of rotation of the rotor shaft 1, has no recesses and therefore protects the electric motor from water or dirt hitting it axially. It is important that this radial distance area covered by the end face includes the radial distance area covered by the bearing flanges (3, 18) and by the fan wheel with fan blades 17 and by the stator housing. The rest of the electric motor is thus arranged in a protected manner below the end face of the fan cowl 11 .
  • the fan cowl 11 is preferably of cylindrical design, so that the end face is flat and sealed.
  • the axis of rotation of the rotor shaft 1 is vertical and the cylinder axis of the cylinder is also vertical, water falling vertically, in particular rain, does not penetrate into the spatial area arranged in the vertical direction below the end face of the fan cowl 11 .
  • the end face is thus a circular surface
  • the lateral surface is a circular cylindrical lateral surface with radially continuous recesses, in particular as a passage for the air flow conveyed by the fan.
  • a connection box 12 for the supply of the stator winding 10 of the electric motor is arranged on the stator housing 8 .
  • a shaft sealing ring 16 is accommodated in the adapter part 5, which seals off the rotor shaft 1;
  • the adapter part 5 has the annular centering collar and the annular centering collar.
  • the centering collar of the adapter part 5 is connected to the centering collar of the adapter part 5 via an annular wall, which is interrupted in the circumferential direction by at least one recess 22, so that a flow of cooling air can pass through the recess 22 or through the recesses 22, in particular for efficient cooling of the Drum brake.
  • Corner regions 21 protruding in the radial direction are formed on the circumference of the centering collar and are spaced apart from one another in the circumferential direction, in particular are spaced regularly and/or evenly.
  • Each of the corner regions 21 has an axially continuous threaded hole into which a screw can be screwed, which is passed through an axial hole in the stator housing 8 so that after the screw has been screwed in, the screw head of the screw pushes the stator housing 8 towards the adapter part 5 .
  • Corner regions 20 protruding in the radial direction are formed on the circumference of the centering collar and are spaced apart from one another in the circumferential direction, in particular are regularly and/or evenly spaced.
  • Each of the corner portions 20 has an axial through bore, through which a screw can be passed, which is screwed into a threaded bore of the first bearing flange 3, so that after screwing in the screw, the screw head of the screw pushes the adapter part 5 toward the first bearing flange 3.
  • the corner areas 20 can thus be adapted to the hole pattern of the first bearing flange 3 .
  • the corner areas 21 can thus be adapted to the hole pattern of the stator housing 8 .
  • the stator housing 8 surrounds a stator core 9, in which the stator winding 10 is arranged, in the circumferential direction, in particular completely and/or uninterruptedly
  • the fan cowl 11 is preferably clip-connected to the second bearing flange.
  • the fan cowl 11 has an axially extending tab, on which a nose area is formed that protrudes radially inwards and/or outwards and can be clipped into a depression formed on the second bearing flange.
  • connection blocks 23 of the drum brake additionally connect the centering collar to the centering collar.
  • the operating device 13 is arranged on the connection blocks 23 .
  • the fan cowl is designed as a metal sheet metal part, in particular a stamped and bent part, instead of as a plastic injection molded part.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne un moteur électrique comprenant un ventilateur et un couvercle de ventilateur. Le ventilateur comporte une roue pourvue de pales. Le moteur électrique comporte un arbre de rotor monté rotatif par l'intermédiaire de premier et second paliers. Le premier palier est logé dans une bride du premier palier. Le second palier est logé dans une bride du second palier. Un carter de stator du moteur électrique est relié à la bride du second palier, ainsi qu'à la bride du premier palier ou à une partie d'adaptateur reliée à la bride du premier palier. La roue du ventilateur est raccordée à l'arbre de rotor pour une rotation conjointe avec celui-ci sur le côté du second palier orienté à l'opposé du premier palier. Le couvercle du ventilateur entoure le ventilateur dans la direction périphérique. La surface d'extrémité du couvercle du ventilateur présente une conception étanche.
PCT/EP2022/025461 2021-10-25 2022-10-05 Moteur électrique comprenant un ventilateur et un couvercle de ventilateur WO2023072427A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22786752.0A EP4423881A1 (fr) 2021-10-25 2022-10-05 Moteur électrique comprenant un ventilateur et un couvercle de ventilateur

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202111263061.3A CN116032059A (zh) 2021-10-25 2021-10-25 具有风机和风机罩的电机
CN202111263061.3 2021-10-25
DE102021006147 2021-12-13
DE102021006147.0 2021-12-13

Publications (1)

Publication Number Publication Date
WO2023072427A1 true WO2023072427A1 (fr) 2023-05-04

Family

ID=83689501

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/025461 WO2023072427A1 (fr) 2021-10-25 2022-10-05 Moteur électrique comprenant un ventilateur et un couvercle de ventilateur

Country Status (3)

Country Link
EP (1) EP4423881A1 (fr)
DE (1) DE102022003692A1 (fr)
WO (1) WO2023072427A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118353207A (zh) * 2024-04-15 2024-07-16 兴化金马鹿机电科技有限公司 一种可自动更变扭矩的电动机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH186526A (de) * 1935-01-10 1936-09-30 Siemens Ag Elektrischer Handstaubsauger.
KR19980049500U (ko) * 1996-12-30 1998-10-07 이종수 회전기기의 팬커버 체결구조
DE102008028605A1 (de) * 2008-06-18 2009-12-24 Sew-Eurodrive Gmbh & Co. Kg Elektromotor mit Bremse, Bremse und Verfahren
WO2015079383A1 (fr) 2013-11-27 2015-06-04 Motovario S.P.A. Moteur électrique
US20190097489A1 (en) 2015-12-23 2019-03-28 Wolong Electric America Llc Systems and methods for air-cooling motor components
DE112017003578T5 (de) 2016-07-15 2019-05-09 Kito Corporation Bremsmotor und Verfahren zur Herstellung eines Bremsmotors
CN110601444A (zh) * 2019-09-17 2019-12-20 安徽同华新能源动力股份有限公司 电机冷却结构

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH186526A (de) * 1935-01-10 1936-09-30 Siemens Ag Elektrischer Handstaubsauger.
KR19980049500U (ko) * 1996-12-30 1998-10-07 이종수 회전기기의 팬커버 체결구조
DE102008028605A1 (de) * 2008-06-18 2009-12-24 Sew-Eurodrive Gmbh & Co. Kg Elektromotor mit Bremse, Bremse und Verfahren
WO2015079383A1 (fr) 2013-11-27 2015-06-04 Motovario S.P.A. Moteur électrique
US20190097489A1 (en) 2015-12-23 2019-03-28 Wolong Electric America Llc Systems and methods for air-cooling motor components
US10804764B2 (en) * 2015-12-23 2020-10-13 Wolong Electric America Llc Systems and methods for air-cooling motor components
DE112017003578T5 (de) 2016-07-15 2019-05-09 Kito Corporation Bremsmotor und Verfahren zur Herstellung eines Bremsmotors
CN110601444A (zh) * 2019-09-17 2019-12-20 安徽同华新能源动力股份有限公司 电机冷却结构

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118353207A (zh) * 2024-04-15 2024-07-16 兴化金马鹿机电科技有限公司 一种可自动更变扭矩的电动机

Also Published As

Publication number Publication date
EP4423881A1 (fr) 2024-09-04
DE102022003692A1 (de) 2023-04-27

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