CN116032059A - Motor with fan and fan cover - Google Patents
Motor with fan and fan cover Download PDFInfo
- Publication number
- CN116032059A CN116032059A CN202111263061.3A CN202111263061A CN116032059A CN 116032059 A CN116032059 A CN 116032059A CN 202111263061 A CN202111263061 A CN 202111263061A CN 116032059 A CN116032059 A CN 116032059A
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- fan
- bearing
- adapter part
- flange
- housing
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Abstract
The invention relates to a motor with a fan and a fan housing, the fan having a fan wheel with fan blades, the motor having a rotor shaft which is rotatably supported by means of a first bearing and a second bearing, the first bearing being received in a first bearing flange, the second bearing being received in a second bearing flange, a stator housing of the motor being connected to the second bearing flange, the stator housing of the motor being connected to either the first bearing flange or to an adapter part connected to the first bearing flange, the fan wheel being connected to the rotor shaft on a side of the second bearing facing away from the first bearing in a rotationally fixed manner, the fan housing enclosing the fan in a circumferential direction, an end face of the fan housing being configured to be sealed.
Description
Technical Field
The invention relates to an electric motor with a fan and a fan housing.
Background
It is generally known that an electric machine generates heat losses, which must be dissipated to the environment.
Disclosure of Invention
It is therefore an object of the present invention to create improved heat dissipation in an electric machine.
According to the invention, this object is achieved by an electric machine according to the features given in claim 1.
An important feature of the invention in connection with the motor is that the motor is provided with a fan and a fan housing,
wherein the fan is provided with a fan impeller with fan blades,
wherein the motor has a rotor shaft which is rotatably supported by a first bearing and a second bearing,
wherein the first bearing is received in the first bearing flange and the second bearing is received in the second bearing flange,
wherein the stator housing of the electric machine is connected to the second bearing flange and the stator housing is connected to either the first bearing flange or to an adapter part connected to the first bearing flange,
wherein the fan wheel is connected in a rotationally fixed manner to the rotor shaft on a side of the second bearing facing away from the first bearing, in particular on a side of the second bearing facing away from the first bearing in the axial direction,
wherein the fan housing encloses the fan in the circumferential direction,
wherein the end face of the fan housing is configured to be sealed, in particular without through openings and/or to be liquid/water-tight and/or gas-tight.
The advantage here is that the motor can be operated in the following assembly direction, namely: in this assembly direction, the rotational axis of the rotor shaft points vertically. The motor is thus protected from liquids, in particular rain water, which impinge in the axial direction, i.e. parallel to the rotational axis of the rotor shaft, since the fan housing is embodied in a closed manner, in particular without through openings. The air fed by the fan passes through the fan cover in the radial direction, so that a non-disturbing heat dissipation of the brake is ensured even in the presence of water, in particular in the event of rain.
It is particularly advantageous if the air flow sucked or fed by the fan flows along cooling ribs extending in the axial direction on the outer surface of the stator housing, thus also bypassing the drum brake. The heat dissipation of the drum brake is thus improved by the air flow.
In an advantageous embodiment, a fan wheel with fan blades is arranged radially inside the fan housing,
in particular, wherein the fan wheel and the fan blades are spaced apart from the fan housing in a radial direction. The advantage here is that the fan housing only allows the air flow sucked or conveyed by the fan to pass radially in a directed manner. Since the fan housing is closed at the end face, an axially directed passage is prevented.
In an advantageous embodiment, the end face of the fan housing, in particular facing away from the stator housing, is configured in a sealed and/or closed manner, in particular in a fluid-tight and/or gas-tight manner, in particular without an axially through opening,
in particular, the liquid reaching the end faces in the axial direction is directed away from the rest of the motor, in particular at least from the stator housing and the two bearing flanges and from the adapter part and/or the fan. The advantage here is that the motor can be mounted vertically in the outdoor area and is thus protected from rain.
In an advantageous embodiment, the radial distance region covered by the end face of the fan housing comprises a radial distance region covered by the bearing flange and by the fan wheel with fan blades and by the stator housing, in particular such that the remainder of the motor is arranged in a protected manner below the end face of the fan housing when the rotational axis of the rotor shaft is oriented vertically. The advantage here is that the motor can be used in a vertically oriented manner in the outdoor area. In particular, the motor can be protected from rainwater.
In an advantageous embodiment, the fan housing is configured cylindrically, in particular, wherein the end face of the fan housing is configured as a circular face,
and/or the circumferential surface of the fan housing, in particular the circumferential surface of the cylinder, has a radially through-going opening,
in particular, the openings are regularly or uniformly spaced apart from each other in the circumferential direction. The advantage here is that a simple production can be achieved. Furthermore, the outer diameter of the disk can be selected such that it exceeds the maximum outer diameter in any of the planes whose normal directions are oriented parallel to the axis of rotation of the motor rotor shaft.
In an advantageous embodiment, the fan housing is connected to the second flange clip. The advantage here is that the clip connection can be realized quickly and easily. In addition, since the rotating member cannot be contacted, safety is improved.
In an advantageous embodiment, the adapter part encloses the brake drum of the drum brake, in particular from the radially outer side,
in particular wherein the drum brake can be actuated electromagnetically. The advantage here is that braking of the rotating shaft can be achieved.
In an advantageous embodiment, the adapter part has a centering collar which is designed to mate exactly with the centering collar of the first bearing flange, and the adapter part has a centering collar which is designed to mate exactly with the centering collar of the stator housing. The advantage here is that the first bearing flange is designed with its centering collar in exact engagement with the centering collar of the stator housing, and thus optionally can be connected directly to the stator housing or alternatively to an adapter part which can be arranged between the stator housing and the first bearing flange, wherein the adapter part is connected to the stator housing. The functional options of the drum brake are thus integrated or not integrated in a modular manner, i.e. in particular in the form of a model kit.
In an advantageous embodiment, the adapter part has a centering collar which is designed to mate precisely with the centering collar of the first bearing flange, and the adapter part has a centering collar which is designed to mate precisely with the centering collar of the stator housing. The advantage here is that the first bearing flange is designed with its centering collar in exact engagement with the centering collar of the stator housing, and thus optionally can be connected directly to the stator housing or alternatively to an adapter part which can be arranged between the stator housing and the first bearing flange, wherein the adapter part is connected to the stator housing. The functional options of the drum brake are thus integrated or not integrated in a modular manner, i.e. in particular in the form of a model kit.
In an advantageous embodiment, a shaft sealing ring is received in the adapter part, which shaft sealing ring seals against the rotor shaft. In this case, the advantage is that a high level of operational safety can be achieved.
In an advantageous embodiment, the centering collar of the adapter part is connected to the centering flange of the adapter part by an annular wall, which is interrupted in the circumferential direction by at least one opening, in particular in such a way that a cooling air flow can be conveyed through the at least one opening, in particular for efficient cooling of the drum brake. In this case, an effective cooling can be achieved.
In an advantageous embodiment, angular regions protruding in the radial direction are formed on the circumference of the adapter part, in particular of the centering flange of the adapter part, which angular regions are spaced apart from one another in the circumferential direction, in particular regularly and/or uniformly,
in particular, each of the corner regions has an axially penetrating threaded bore, into which a screw passing through the axial bore of the stator housing can be screwed in such that the screw head of the screwed screw presses the stator housing against the adapter part. The advantage here is that the corner regions can be adapted accordingly to the bore pattern of the stator housing, so that the screws can be oriented axially and used as connecting screws.
In an advantageous embodiment, angular regions protruding in the radial direction are formed on the circumference of the adapter part, in particular on the circumference of the centering collar of the adapter part, which angular regions are spaced apart from one another in the circumferential direction, in particular uniformly and/or homogeneously,
in particular, each of these corner regions has an axially through-going hole, through which a screw screwed into the threaded bore of the first bearing flange can pass, so that after screwing in the screw, the screw head of the screw presses the adapter part against the first bearing flange. The advantage here is that the corner region can be adapted accordingly to the bore pattern of the first bearing flange, so that the screw can be oriented axially and used as a connecting screw.
In an advantageous embodiment, an actuating device of the drum brake is arranged on the adapter part, to which actuating device a terminal box of a coil of the drum brake is fastened. The advantage here is that the supply of the stator winding of the electric machine is effected in a further terminal box, so that the supply of the coils of the drum brake can be carried out independently, in particular in that the electric potentials of the coils and the stator winding can be different, since the two terminal boxes are arranged sufficiently far from one another, i.e. insulated relative to one another.
In an alternative advantageous embodiment, the actuating device of the drum brake and the terminal box of the coil of the drum brake are arranged on the adapter part. The advantage here is that the adapter part receives the drum brake and the brake drum can be arranged inside the adapter part, while the actuating device and the associated terminal box are arranged outside.
Further advantages result from the dependent claims. The invention is not limited to the combination of features of the claims. Other interesting combinations of the claims and/or the individual claim features and/or the description features and/or the drawing features are obtained to a person skilled in the art, especially from the objects proposed and/or by comparison with the prior art.
Drawings
The invention will now be explained in detail by means of a schematic drawing:
fig. 1 shows a partial sectional view of an electric machine according to the invention in a side view.
Fig. 2 shows an adapter part 5 of the electric motor in an oblique view from a first view.
Fig. 3 shows the adapter part 5 of the electric motor in a perspective view from the second direction.
Fig. 4 shows a fan housing 11 of the motor in an oblique view.
List of reference numerals:
1. rotor shaft
2. First bearing, in particular floating bearing
3. First bearing flange
4. Centering flange
5. Adapter component
6. Centering convex ring
7. Brake drum
8. Stator housing
9. Stator lamination stack
10. Stator winding
11. Fan cover
12. Terminal box for stator winding 10
13. Actuating device
14. Junction box for drum brake
15. Manual release lever
16. Shaft sealing ring
17. Fan blade
18. Second bearing flange
20. Corner region
21. Corner region
22. An opening
23. Connecting block
Detailed Description
As shown in the drawing, the electrical machine has a rotor shaft 1 which is rotatably supported by a first bearing 2, in particular a floating bearing, and by a second bearing, in particular a fixed bearing. Here, the first bearing 2 is received in the first bearing flange 3 and the second bearing is received in the second bearing flange 18, wherein the first bearing flange 3 is connected to the adapter part 5, which is connected to the stator housing 8, and the second bearing flange 18 is connected to the stator housing 8.
The stator housing 8 is here arranged between the adapter part 5 and the second bearing flange 18.
Furthermore, an adapter part 5 is arranged between the first bearing flange 3 and the stator housing 8.
The first bearing flange 3 can be connected directly to the stator housing 8 without the adapter part 5 and the rotor shaft 1 together with all parts connected to the rotor shaft 1 in a rotationally fixed manner. Since the stator housing 8 has the centering collar 6, the centering collar of the first bearing flange can be contacted by the centering collar 4. The motor can thus be manufactured without the adapter part 5 and without the drum brake being surrounded by the adapter part 5, wherein a corresponding adjustment of the rotor shaft is required.
By inserting the adapter part 5, the axial length of the motor is increased, but the function of the drum brake is also increased. In particular, in contrast to parking brakes, the drum brake is also able to perform braking while the rotor shaft 1 is still rotating.
The adapter part 5 has a centering collar which is adapted to the centering collar 4 of the first bearing flange, in particular, i.e. is designed to fit precisely therewith, so that the alignment and connection of the first bearing flange 3 to the adapter part 5 can be achieved in a highly secure manner.
Furthermore, the adapter part 5 has a centering collar which cooperates with, i.e. is designed in particular with a precise fit with, the centering collar 6 of the stator housing 8.
The adapter part 5 completely encloses the drum brake radially, i.e. in particular in the circumferential direction. Here, the brake drum 7 is connected to the rotor shaft 1 in a rotationally fixed manner.
An actuating device 13 for a drum brake and a terminal box 14 for a coil of an electromagnetically actuatable drum brake are arranged on the adapter part 5. The drum brake enables braking of the rotating rotor shaft 1. In contrast, parking brakes can only be used for substantially stationary shafts.
Furthermore, the drum brake has a manually releasable lever 15 for the manually induced release of the drum brake.
Although the invention makes it possible to alternatively manufacture an electric machine with a drum brake and an electric machine without a drum brake with the aid of the modularly constructed electric machine according to the invention, only the adapter part 5 and the corresponding rotor shaft 1 have to be matched, by using a drum brake, a greater thermal power can be expected during braking, which must be discharged into the surroundings.
The thermal power is very high during braking of the rotating shaft. Therefore, cooling ribs/cooling ribs extending in the axial direction, i.e. parallel to the rotational axis of the rotor shaft 1, are formed at the stator housing 8, and a cooling air flow flowing along the cooling ribs is fed by a fan wheel with fan blades 17 connected to the rotor shaft 1 in a rotationally fixed manner.
The fan housing 11 is connected to a second bearing flange 18 and encloses a fan wheel with fan blades 17.
The fan housing 11 is embodied with a closed surface on the end face. The peripheral surface is connected to the end face and has through openings, in particular uniformly and/or regularly spaced apart from one another.
The radial distance region covered by the end face of the fan housing 11, in particular the radial distance region relative to the rotational axis of the rotor shaft 1, has no openings, so that the motor is protected from axially impinging water or dirt. It is important here that this radial distance region covered by the end faces includes the radial distance region covered by the bearing flanges 3, 18 and the radial distance region covered by the fan wheel with the fan blades 17 and by the stator housing. The remaining part of the motor is thus arranged protectively below the end face of the fan housing 11.
Preferably, the fan housing 11 is embodied cylindrically, so that the end faces are embodied flat and sealed. Thus, when the rotational axis of the rotor shaft 1 is oriented vertically and thus also when the cylinder axis of the cylinder is oriented vertically, water falling vertically downward, in particular rain water, does not enter into the spatial region arranged in the vertical direction below the end face of the fan housing 11.
Through the circumferential surface, an air flow can be sucked in from the radial direction and can be conveyed in the axial direction along the cooling ribs of the stator housing 8 to the adapter part 5. Thus, an efficient cooling of the adapter part and thus also of the drum brake can be achieved.
The end face is thus a circular face, the circumferential face being a cylindrical circumferential face with radially through openings, in particular as channels for the air flow delivered by the fan.
A terminal box 12 is provided on the stator housing 8 for supplying the stator winding 10 of the electric machine with electric power.
In the case of an opposite rotational direction of the fan wheel, the cooling air flow can be sucked by the fan from the surroundings of the adapter part 5 and along the stator housing 8 and can then be conveyed in the radial direction through the fan housing 11. In the case of a drum brake arranged below in the vertical direction, the conveying action of the fan is enhanced by convection, because the air heated by the adapter part or by the drum brake rises along the cooling ribs of the stator housing 8 and is sucked in by the fan and then conveyed further in the radial direction.
As shown in fig. 1, a shaft sealing ring 16 is received in the adapter part 5, which seals against the rotor shaft 1, i.e. in particular its sealing lip bears against and/or acts on a sealing surface formed on the rotor shaft 1.
As can be seen in fig. 2 and 3, the adapter part 5 has an annular centering flange and an annular centering collar.
The centering collar of the adapter part 5 is connected to the centering flange of the adapter part 5 by an annular wall, which is however interrupted in the circumferential direction by at least one opening 22, so that a cooling air flow can flow through the opening 22 or through the opening 22, in particular for efficiently cooling the drum brake.
The corner regions 20 can thus be matched to the bore pattern of the first bearing flange 3.
The corner areas 21 can thus be matched to the borehole pattern of the stator housing 8.
The stator housing 8 surrounds, in the circumferential direction, in particular completely and/or uninterruptedly, a stator lamination stack 9 in which stator windings 10 are arranged.
The fan guard 11 is preferably connected to the second bearing flange clamp. For this purpose, the fan housing 11 has axially extending webs, on which radially inwardly and/or outwardly projecting lug areas are formed, which can be snapped into recesses formed on the second bearing flange.
The two connection blocks 23 of the drum brake additionally connect the centering flange with the centering collar. The actuation device 13 is arranged on the connection block 23.
In other embodiments according to the invention, the fan housing is not designed as a plastic injection molding but as a sheet metal part, in particular as a punched part.
Claims (13)
1. An electric motor having a fan and a fan housing,
wherein the fan is provided with a fan impeller with fan blades,
wherein the motor has a rotor shaft which is rotatably supported by a first bearing and a second bearing,
wherein the first bearing is received in the first bearing flange and the second bearing is received in the second bearing flange,
wherein the stator housing of the electric machine is connected to the second bearing flange and the stator housing is connected to either the first bearing flange or to an adapter part connected to the first bearing flange,
it is characterized in that the method comprises the steps of,
the fan wheel is connected in a rotationally fixed manner to the rotor shaft on the side of the second bearing facing away from the first bearing, in particular on the side of the second bearing facing away from the first bearing in the axial direction,
wherein the fan housing encloses the fan in the circumferential direction,
the front face of the fan housing is configured as a sealed, in particular without through openings and/or as a liquid-tight and/or gas-tight.
2. An electric machine according to claim 1,
it is characterized in that the method comprises the steps of,
a fan wheel with fan blades is arranged radially inside the fan housing,
in particular, wherein the fan wheel and the fan blades are spaced apart from the fan housing in a radial direction.
3. An electrical machine according to any preceding claim,
it is characterized in that the method comprises the steps of,
the end face of the fan housing facing away from the stator housing is designed in a sealing and/or closed manner, in particular in a fluid-tight and/or gas-tight manner, in particular without an axially penetrating opening,
in particular, the liquid reaching the end faces in the axial direction is directed away from the rest of the motor, in particular at least from the stator housing and the two bearing flanges and from the adapter part and/or the fan.
4. An electrical machine according to any preceding claim,
it is characterized in that the method comprises the steps of,
the radial distance area covered by the end face of the fan housing comprises a radial distance area covered by the bearing flange, a radial distance area covered by the fan wheel with fan blades and a radial distance area covered by the stator housing, in particular such that the rest of the electric machine is protectively arranged below the end face of the fan housing (11) when the rotational axis of the rotor shaft is oriented vertically.
5. An electrical machine according to any preceding claim,
it is characterized in that the method comprises the steps of,
the fan housing is configured cylindrically, in particular wherein the end face of the fan housing is configured as a circular face,
and/or the circumferential surface of the fan housing, in particular the circumferential surface of the cylinder, has radial through openings,
in particular, the openings are regularly or uniformly spaced apart from each other in the circumferential direction.
6. An electrical machine according to any preceding claim,
it is characterized in that the method comprises the steps of,
the fan cover is connected with the second bearing flange clamp.
7. An electrical machine according to any preceding claim,
it is characterized in that the method comprises the steps of,
the adapter part encloses in particular the brake drum of the drum brake from the radially outer side,
in particular wherein the drum brake can be actuated electromagnetically.
8. An electrical machine according to any preceding claim,
it is characterized in that the method comprises the steps of,
the adapter member has a centering collar configured to mate precisely with the centering flange of the first bearing flange, the adapter member further has a centering flange configured to mate precisely with the centering collar of the stator housing,
or alternatively, the process may be performed,
the adapter member has a centering flange configured to mate precisely with the centering collar of the first bearing flange, and the adapter member also has a centering collar configured to mate precisely with the centering flange of the stator housing.
9. An electrical machine according to any preceding claim,
it is characterized in that the method comprises the steps of,
a shaft seal ring is received in the adapter member, the shaft seal ring sealing against the rotor shaft.
10. An electrical machine according to any preceding claim,
it is characterized in that the method comprises the steps of,
the centering collar of the adapter part is connected to the centering flange of the adapter part by an annular wall which is interrupted in the circumferential direction by at least one opening (22), in particular in such a way that a cooling air flow can be conveyed through the at least one opening (22), in particular for efficiently cooling the drum brake.
11. An electrical machine according to any preceding claim,
it is characterized in that the method comprises the steps of,
angular regions (21) protruding in the radial direction are formed on the circumference of the adapter part, in particular on the circumference of the centering flange of the adapter part, which angular regions are spaced apart from one another in the circumferential direction, in particular regularly and/or uniformly,
in particular, each of the corner regions (21) has an axially penetrating threaded bore, into which a screw passing through the axial bore of the stator housing can be screwed in such a way that the screw head of the screwed screw presses the stator housing against the adapter part.
12. An electrical machine according to any preceding claim,
it is characterized in that the method comprises the steps of,
angular regions (20) protruding in the radial direction are formed on the circumference of the adapter part, in particular on the circumference of the centering collar of the adapter part, which angular regions are spaced apart from one another in the circumferential direction, in particular regularly and/or uniformly,
in particular, each of the corner regions (20) has an axially extending bore, through which a screw which is screwed into the threaded bore of the first bearing flange (3) can be passed, so that after screwing in the screw head of the screw presses the adapter part (5) against the first bearing flange (3).
13. An electrical machine according to any preceding claim,
it is characterized in that the method comprises the steps of,
an actuating device of a drum brake is arranged on the adapter part, to which actuating device a terminal box of a coil of the drum brake is fixed,
or alternatively, the process may be performed,
an actuating device of a drum brake and a terminal box of a coil of the drum brake are arranged on the adapter part.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111263061.3A CN116032059A (en) | 2021-10-25 | 2021-10-25 | Motor with fan and fan cover |
| DE102022003692.4A DE102022003692A1 (en) | 2021-10-25 | 2022-10-05 | Electric motor with fan and fan hood |
| PCT/EP2022/025461 WO2023072427A1 (en) | 2021-10-25 | 2022-10-05 | Electric motor comprising a fan and a fan cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111263061.3A CN116032059A (en) | 2021-10-25 | 2021-10-25 | Motor with fan and fan cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116032059A true CN116032059A (en) | 2023-04-28 |
Family
ID=86077203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111263061.3A Pending CN116032059A (en) | 2021-10-25 | 2021-10-25 | Motor with fan and fan cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116032059A (en) |
-
2021
- 2021-10-25 CN CN202111263061.3A patent/CN116032059A/en active Pending
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