CN217935319U - Motor with fan - Google Patents
Motor with fan Download PDFInfo
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- CN217935319U CN217935319U CN202221717051.2U CN202221717051U CN217935319U CN 217935319 U CN217935319 U CN 217935319U CN 202221717051 U CN202221717051 U CN 202221717051U CN 217935319 U CN217935319 U CN 217935319U
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- bearing flange
- fan
- flange
- bearing
- motor
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Abstract
The utility model relates to a motor with fan, motor have stator housing, the bearing flange of motor is connected with this stator housing, the fan with bearing flange joint has accepted the bearing in this bearing flange, especially has accepted the outer loop of bearing, a rotor shaft for rotationally supporting the motor, the bearing flange has the axis of rotation that uses the rotor shaft radially to run through as the benchmark, the air current carried by the fan flows in by the internal space region of bearing flange radial surrounding through this first breach, the bearing flange has in the circumferencial direction with the spaced apart second breach of first breach, the internal space region communicates through the external environment of this second breach and bearing flange, and/or the air current discharges in the external environment of bearing flange from the internal space region through this second breach.
Description
Technical Field
The utility model relates to a motor with fan.
Background
As is known, electrical machines generate heat losses, which are dissipated to the environment.
SUMMERY OF THE UTILITY MODEL
The object of the invention is therefore to improve an electric machine as compactly as possible.
According to the invention, this object is achieved by an electric machine according to the features given below.
In the aspect of the motor with the fan, the utility model is characterized in that the motor is provided with a stator shell, a bearing flange of the motor is connected with the stator shell,
wherein the fan is connected to a bearing flange, in which a bearing, in particular an outer ring of the bearing, is received for rotatably supporting a rotor shaft of the electric machine,
wherein the bearing flange has a first recess which penetrates radially with reference to the axis of rotation of the rotor shaft, through which the air flow conveyed by the fan flows into the inner space region radially enclosed by the bearing flange,
wherein the bearing flange has a second recess spaced apart from the first recess in the circumferential direction, through which second recess the interior space region communicates with the environment outside the bearing flange and/or through which second recess the air flow is discharged from the interior space region into the environment outside the bearing flange.
The advantage here is that the electric machine can be constructed compactly, i.e. in a small installation space, without a reduction in power. Since the additional cooling of the bearing flange by the fan removes the heat loss of the first bearing of the rotor shaft and, if necessary, of the additionally present shaft sealing ring. Thus, a respective fan may be provided at each bearing location of the motor. It is also important that the air flow of the first fan cools the inner wall of the bearing flange and the air flow of the second fan cools the outer wall of the bearing flange.
In an advantageous embodiment, the fan housing of the fan has a flange projecting from the fan housing, which flange rests against the flat connection surface of the bearing flange. The advantage here is that the stable fixed of fan can be realized.
In an advantageous embodiment, a bearing cap for receiving a further bearing of the rotor shaft is arranged on the side of the stator housing facing away from the bearing flange,
wherein, on the side of the stator housing facing away from the bearing flange, the second fan wheel is connected in a rotationally fixed manner to the rotor shaft and is radially surrounded by a fan guard which is connected in a releasable manner to the bearing cover,
wherein the air flow conveyed by the second fan wheel flows along the cooling ribs formed on the outside of the stator housing in the axial direction, in particular parallel to the axis of rotation of the rotor shaft, and in particular thereafter along the bearing flange,
in particular, the fan guard has a grille opening through the fan guard on its axial end side facing away from the bearing flange, in particular for the inflow of an air flow,
in particular, wherein the fins are spaced apart from each other in the circumferential direction,
in particular, the axial direction, the radial direction and/or the circumferential direction are referenced to the axis of rotation of the rotor shaft. The advantage here is that the air flow cools the stator housing on the one hand and the bearing flange which is cooled thereby on both sides on the other hand.
In an advantageous embodiment, the terminal box is arranged on the stator housing and is connected to the stator housing. The advantage here is that the fan requires only slightly more installation space than the terminal box, since the fan can utilize the radial extent covered by the terminal box in the circumferential corner region covered by the terminal box.
In an advantageous embodiment, the circumferential angle region covered by the terminal box in the circumferential direction encompasses the circumferential angle region covered by the fan. The advantage here is that only slightly more installation space is required for the fan.
In an advantageous embodiment, the terminal box is spaced apart from the fan in the axial direction. The advantage here is that the bearing flange can be cooled separately.
In an advantageous embodiment, the radial area covered by the fan, in particular by the fan housing, includes the radial area covered by the terminal box. The advantage here is that the fan only needs a slightly greater radial extent.
In an advantageous embodiment, the flange part is connected to the bearing flange in a releasable manner in the region of the inner space radially enclosed by the bearing flange,
wherein the rotor shaft extends out through the gap of the flange part,
wherein a shaft sealing ring is received in the flange part, which shaft sealing ring seals against the rotor shaft, in particular the sealing lip of the shaft sealing ring thus working on the rotor shaft,
in particular, the flange part is arranged on the side of the bearing flange facing axially away from the stator housing and/or on a bearing receptacle/bearing seat of the bearing, which is formed in the bearing flange. The advantage here is that the motor has fans on both sides and therefore a more effective cooling can be produced. Here, the fans do not interfere with each other. Since the air flow of the first fan flows substantially transversely to the rotor shaft axis of rotation, the air flow of the second fan flows parallel to the rotor shaft axis of rotation, i.e. in the axial direction.
In an advantageous embodiment, the bearing flange is formed as a square flange on its side facing the stator housing and as a circular flange on its side facing away from the stator housing, in particular for connection to a device to be driven, in particular a gear unit. The advantage here is that the bearing flange is designed as an interface and can therefore be arranged between differently shaped flange types.
In an advantageous embodiment, the bearing flange has a cylindrical outer surface in the region covered by the connection surface in the axial direction, which outer surface is interrupted in the circumferential corner region covered by the connection surface in the circumferential direction, in particular for forming the connection surface. The advantage here is that simple production is possible.
In an advantageous embodiment, one or more cooling ribs project in the axial direction on the bearing flange into the region of the inner space radially enclosed by the bearing flange, in particular a flange part connected to the bearing flange and receiving a shaft sealing ring which seals against the rotor shaft is radially enclosed by the cooling ribs of the bearing flange. The advantage here is that improved cooling can be achieved and the air flow can be diverted in the axial direction.
In an alternative advantageous embodiment, one or more cooling fins project in the radial direction, i.e. in particular directed radially inward, on the bearing flange into the inner space region radially enclosed by the bearing flange. The advantage here is that improved cooling and also improved guidance of the air flow can be achieved.
In an advantageous embodiment, the bearing flange is made of aluminum. The advantage here is that improved cooling can be achieved.
In an advantageous embodiment, axially oriented cooling ribs project on the outside of the bearing flange parallel to the cooling ribs formed on the stator housing. The advantage here is that the air flow guide of the axially oriented cooling ribs is embodied in an elongated manner, whereby the outer side of the bearing flange is flowed through by the axially oriented air flow and the inner side is flowed through by the air flow oriented in the circumferential direction. The two air flows are thus oriented in a crosswise manner and/or transversely to one another.
The present invention is not limited to the above-described combinations of features. The above-described and/or individual features and/or other possible combinations of features described below and/or of features in the drawings can be brought about by a person skilled in the art, in particular from the object set out and/or by comparison with the prior art.
Drawings
The invention will now be described in detail with reference to the schematic drawings.
Fig. 1 shows an electric machine according to the invention in an oblique view.
The electric machine is shown in a half-sectional side view in fig. 2.
Fig. 3 shows a bearing flange 6 of the electric machine in an oblique view, wherein the fan 3 is connected to the bearing flange 6.
The bearing flange 6 is shown in an oblique view in fig. 4.
Fig. 5 shows the fan 3 in an oblique view.
List of reference numerals:
1. fan cover
2. Terminal box
3. Fan, in particular radial fan
4. Rotor shaft
5. Radial through gap
6. Bearing flange
7. Heat sink
8. Flange
20. Bearing assembly
40. Connecting surface
41. Radial through gap
Detailed Description
As shown in the figures, the electric machine has a stator housing on which axially extending cooling ribs 7 running parallel to one another are formed.
A first bearing flange 6 is fixed to a first axial end region of the stator housing, in which a bearing 20 for rotatably mounting the rotor shaft 4 of the electric machine is received.
The fan 3 is placed on and connected to the bearing flange 6. For this purpose, a projecting flange region 8 is formed on the housing of the fan 3, which flange region rests against the connection surface 40 and is preferably fixed by means of screws which pass through the flange region, which screws are screwed into threaded holes arranged in the flat connection surface and whose screw heads press the flange region 8 against the connection surface.
A bearing cover for receiving a further bearing of the rotor shaft 4 is arranged on the side of the stator housing facing away from the bearing flange 6. The second fan wheel is also connected to the rotor shaft 4 in a rotationally fixed manner and is surrounded by the fan guard 1. The air flow conveyed by the second fan wheel is discharged between the stator housing and the fan housing 1 in such a way that the air flow is directed specifically at the cooling ribs 7 and thus flows along these cooling ribs.
The fan 3 is preferably designed as a radial fan, in particular wherein the air flow delivered by the fan 3 exits the fan 3 substantially tangentially to the radial outer circumference of the fan blades of the fan delivering the air flow and enters the inner space region of the bearing flange 20 via a recess 41 which runs radially through the rotational axis of the rotor shaft 4 of the electric machine.
From the inner space region of the bearing flange, the air flow is conducted outward to the environment via the second radially through-opening of the bearing flange 6.
The air flow thus enters the bearing flange 3 in the radial direction with respect to the axis of rotation of the rotor shaft 4 and likewise also enters the bearing flange via the second recess 5.
The second recess 5 is preferably diametrically opposite the first recess 41. In particular, the angular position comprised by the circumferential angular region covered in the circumferential direction by the second notch 5 differs by 180 ° from the angular position comprised by the first notch 41.
The fan housing of the fan 3 has a collar 8 which rests against the flat connection surface of the bearing flange 6 and is fixed by means of screws.
A terminal box 2, into which the power supply line is led via a cable bushing connection, is arranged on the stator housing. The cables for supplying power to the fan 3 are likewise guided into the interior region of the terminal box by means of a cable screw connection.
The area covered by the terminal block 2 in the circumferential direction includes a circumferential angle area covered by the fan 3 with the rotation axis of the rotor shaft 4 as a reference.
Further, the area covered by the fan 3 in the axial direction overlaps not only the area covered by the bearing flange 6 in the axial direction but also the area covered by the stator housing in the axial direction. Therefore, the fan does not require an additional axial structural length.
The bearing flange 6 is connected to the stator housing at its first axial end region and to or can be connected to the gear housing at its other axial end region.
The bearing flange is preferably designed with a square flange on its end side facing the stator housing and is connected with a circular flange, in particular connected or connectable with the gear housing, with its side facing away from the stator housing in the axial direction.
The rotor shaft 4 projects through a bearing flange 6. Radially between the rotor shaft 4 and the bearing flange, there is a clear interior region into which the air flow supplied by the fan 3 flows via the recess 41. The air flow flowing from the interior space region into the environment flows out through the gap 5 into the environment.
However, since the air flow is also conveyed by the second fan wheel along the cooling ribs 7 in the axial direction toward the bearing flange 6, wherein the air flow impinges on the bearing flange 6 behind the cooling ribs 7, the bearing flange 6 is dissipated not only on its outer side but also on its inner side by the air flow.
It is also important that one of the two air flows always remains active in the event of failure of the fan 3 or of the air flow delivered by the second fan wheel. The cooling of the bearing flange 6 is therefore reliably carried out, in particular with a higher level of safety.
The normal to the flat connection face 40 is perpendicular to the axis of rotation of the rotor shaft 4. A circumferential angular region covered by the connected face 40 in the circumferential direction with reference to the rotation axis of the rotor shaft 4 overlaps with a circumferential angular region covered by the terminal block 2 in the circumferential direction.
In particular, the installation space occupied by the terminal box is therefore sufficient to include the fan 3 if this installation space is extended axially, except in the radial direction. Since the fan 3 protrudes from the terminal box 2 in the radial direction.
The connecting surface 40, which is embodied flat, is correspondingly formed as a hollow rectangle and interrupts the cylindrical outer circumference of the bearing flange 6 in the circumferential corner region covered by the connecting surface.
After the connection of the gear unit housing to the bearing flange 6 on the side of the bearing flange facing away from the stator housing, the inner space region radially enclosed by the bearing flange 6 is axially delimited on the one hand by the gear unit and on the side facing away from the gear unit by the bearing received in the bearing flange 6 and the associated sealing device. The sealing arrangement has a shaft sealing ring received in a flange part, wherein the flange part is connected to the bearing flange and is arranged in the interior space region.
The axis of rotation of the rotor shaft 4 is preferably perpendicular to the axis of rotation of the fan 3, but preferably parallel to the flat connection face 40.
The recess 5 is arranged diametrically opposite the recess 41 on the circumference of the bearing flange 6, so that the recess 41 is arranged vertically above the recess 5 when the bearing flange is vertically oriented, i.e. when the bearing flange 6 is oriented in such a vertical space. In this way, rainwater can be prevented from penetrating into the interior space region and causing the penetrating water to flow out into the environment via the openings 5.
In a further embodiment according to the invention, instead of a reduction gear, a further device, in particular a machine, is connected to the bearing flange. For example, the wheels, in particular the chain wheels, are slipped onto the rotor shaft 4 and are connected in a rotationally fixed manner, in particular by means of a keyed connection.
The inner space region radially surrounding the bearing flange 6 communicates directly with the oil-filled gear unit inner space, in which the intermeshing toothed parts of the gear unit are arranged. The input pinion, which meshes with a toothed part of the reduction gear, is connected in a rotationally fixed manner to the rotor shaft 4, in particular by means of a key connection.
Claims (17)
1. A motor with a fan is provided, which comprises a motor body,
the motor is provided with a stator shell, a bearing flange of the motor is connected with the stator shell,
it is characterized in that the preparation method is characterized in that,
the fan is connected to the bearing flange, in which the outer ring of the bearing is received for rotatably supporting the rotor shaft of the electric machine,
the bearing flange has a first recess which penetrates radially with respect to the axis of rotation of the rotor shaft and through which the air flow supplied by the fan flows into the inner region of the space radially enclosed by the bearing flange,
the bearing flange has a second recess spaced apart from the first recess in the circumferential direction, through which the interior space region communicates with the environment outside the bearing flange and/or through which the air flow is discharged from the interior space region into the environment outside the bearing flange.
2. The motor with a blower of claim 1,
it is characterized in that the preparation method is characterized in that,
the fan housing of the fan has a flange projecting from the fan housing, which flange rests against the flat connection surface of the bearing flange.
3. The motor with a blower according to claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
a bearing cap for receiving a further bearing of the rotor shaft is arranged on the side of the stator housing facing away from the bearing flange,
on the side of the stator housing facing away from the bearing flange, the second fan wheel is connected in a rotationally fixed manner to the rotor shaft and is radially surrounded by a fan guard which is connected in a releasable manner to the bearing cover,
the air flow delivered by the second fan wheel flows along the cooling ribs formed on the outside of the stator housing in an axial direction parallel to the axis of rotation of the rotor shaft and thereafter along the bearing flange,
the fan guard has a grille opening, which penetrates the fan guard, on its axial end side facing away from the bearing flange, for the inflow of an air flow,
the fins are spaced apart from each other in the circumferential direction,
the axial direction, the radial direction and/or the circumferential direction are referenced to the axis of rotation of the rotor shaft.
4. The motor with a blower according to claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
the terminal box is arranged on the stator housing, and the terminal box is connected with the stator housing.
5. The motor with a blower of claim 4,
it is characterized in that the preparation method is characterized in that,
the circumferential angle region covered by the junction box in the circumferential direction includes a circumferential angle region covered by the blower.
6. The motor with a blower of claim 4,
it is characterized in that the preparation method is characterized in that,
the junction box is spaced from the fan in the axial direction.
7. The motor with a fan of claim 4,
it is characterized in that the preparation method is characterized in that,
the radial extent covered by the fan housing includes the radial extent covered by the terminal block.
8. The motor with a blower according to claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
in the region of the inner space radially enclosed by the bearing flange, the flange part is connected to the bearing flange in a releasable manner,
the rotor shaft extends through the gap of the flange part,
a shaft sealing ring is received in the flange part, which seals against the rotor shaft, the sealing lip of which thus operates on the rotor shaft.
9. The electric machine with a fan according to claim 8, characterized in that the flange part is arranged on the side of the bearing flange facing axially away from the stator housing and/or on a bearing receptacle of the bearing formed in the bearing flange.
10. The motor with a blower of claim 8,
it is characterized in that the preparation method is characterized in that,
the bearing flange is formed as a square flange on its side facing the stator housing and as a circular flange on its side facing away from the stator housing for connection to a device to be driven.
11. The motor having a fan of claim 10, wherein the device to be driven is a speed reducer.
12. The motor with a blower of claim 2,
it is characterized in that the preparation method is characterized in that,
in the region covered by the connection surface in the axial direction, the bearing flange has a cylindrical outer surface which is interrupted in the circumferential corner region covered by the connection surface in the circumferential direction for forming the connection surface.
13. The motor with a fan according to claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
on the bearing flange, one or more cooling fins project in the axial direction into the region of the interior space radially enclosed by the bearing flange.
14. The electric machine with a blower of claim 13, wherein the flange member coupled to the bearing flange that receives the shaft seal ring that seals against the rotor shaft is radially surrounded by the one or more fins of the bearing flange.
15. The electrical machine with a fan according to claim 1 or 2, characterized in that on the bearing flange one or more cooling fins project directed radially inwards into the region of the inner space radially enclosed by the bearing flange.
16. The motor with a fan according to claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
the bearing flange is made of aluminum.
17. The motor with a blower according to claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
axially oriented cooling ribs project on the outside of the bearing flange parallel to the cooling ribs formed on the stator housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221717051.2U CN217935319U (en) | 2022-07-04 | 2022-07-04 | Motor with fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221717051.2U CN217935319U (en) | 2022-07-04 | 2022-07-04 | Motor with fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217935319U true CN217935319U (en) | 2022-11-29 |
Family
ID=84186737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221717051.2U Active CN217935319U (en) | 2022-07-04 | 2022-07-04 | Motor with fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217935319U (en) |
-
2022
- 2022-07-04 CN CN202221717051.2U patent/CN217935319U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |