Motor with fan cover device
By employing the material locking connection and splice design of concentric rings and corner plate rings in the motor fan cover device, the problems of difficult simple manufacturing and vibration attenuation of existing motor fan protective grilles are solved, achieving stability and vibration attenuation effects.
Patent Information
- Application Number
- CN202423245635.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-27
AI Technical Summary
The existing protective grille design for electric motor fans is difficult to manufacture simply and cannot effectively dampen vibration.
The design employs a fan cover assembly, in which the fan cover is connected to the fan cover through the concentric arrangement of rings and corner plate rings and the material locking connection. Combined with the design of the connecting piece, vibration is damped, and precise alignment and connection are achieved by fixing with screws.
The fan cover device achieves simple manufacturing and high stability, effectively attenuating vibration and improving the overall stability of the motor.
Smart Images
Figure CN223680858U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a motor with a fan cover device. BACKGROUND
[0002] It is known that, for safety reasons, the motor fan must be surrounded by a protective grille. SUMMARY
[0003] It is therefore an object of the utility model to improve a motor with a fan cover device in an easy-to-manufacture manner.
[0004] According to the utility model, this object is achieved in a motor with the following features.
[0005] In the motor with a fan cover device, an important feature of the utility model is that the fan cover device has a fan cover, which is connected to the fan cover of the fan cover device,
[0006] wherein the fan cover has a plurality of rings oriented concentrically to one another and a gusset ring oriented concentrically to the rings as well,
[0007] wherein the gusset ring is arranged radially outside all the rings,
[0008] wherein the webs, which extend in the radial direction and are spaced apart from one another in the circumferential direction, are connected to all the rings and the gusset ring, in particular in a material-locked manner.
[0009] The advantage here is that simple manufacture is possible and vibrations are damped by the webs. Furthermore, the radial spacing between the rings also damps vibrations.
[0010] In an advantageous embodiment, the rings are arranged along, in particular imaginary, conical faces,
[0011] in particular with their conical axes oriented coaxially to the rotational axis of the rotor shaft of the motor. The advantage here is that the fan cover device has high stability.
[0012] In an advantageous embodiment, the axial direction is oriented parallel to the direction of the rotational axis of the rotor shaft of the motor,
[0013] and / or,
[0014] the radial direction is based on the rotational axis of the rotor shaft of the motor,
[0015] and / or,
[0016] the circumferential direction is based on the rotational axis of the rotor shaft of the motor.
[0017] In an advantageous embodiment, the rings, in particular all rings, are spaced apart from one another in the axial direction. The advantage here is that the fan shroud arrangement has high stability.
[0018] In an alternative advantageous embodiment, the rings are arranged overlapping one another in the axial direction and / or overlapping the respective nearest one or more rings. The advantage here is that the fan shroud arrangement has high stability.
[0019] In an advantageous embodiment, the gusset ring has a region of the type of a hole plate and a region of the type of a cylindrical sleeve adjoining it.
[0020] In an alternative advantageous embodiment, the gusset ring has a region of the type of a hole plate and a region of the type of a cone adjoining it, in particular wherein the cone angle of the region of the type of a cone is identical to the cone angle of the conical surface and / or the region of the type of a cone is contained in the conical surface. The advantage here is that the gusset ring is designed as a body of revolution, wherein the body of revolution is rotated out of an L-shaped base body.
[0021] In an advantageous embodiment, the gusset ring has long holes on its edge region axially facing away from the ring and has radially running round holes in its hollow-cylindrical region, in particular in the region of the cylindrical sleeve,
[0022] In particular, the long holes are spaced apart from the round holes in the circumferential direction respectively,
[0023] In particular, the long holes are arranged alternating with the round holes in the circumferential direction respectively,
[0024] In particular, one round hole is arranged in the circumferential direction between every two mutually nearest long holes respectively,
[0025] In particular, the region covered by the long holes in the axial direction encloses the region covered by the round holes in the axial direction. The advantage here is that simple and precise production can be achieved.
[0026] In an advantageous embodiment, the fan shroud arrangement is made of metal, in particular of aluminum or steel. The advantage here is that high stability can be achieved.
[0027] In an advantageous embodiment, the fan cover is designed as a punched part. The advantage here is that simple production and high stability can be achieved.
[0028] In an advantageous embodiment, each tab has two legs oriented parallel to one another,
[0029] - the legs are spaced apart from one another,
[0030] - or the legs are connected to one another at their respective first end region by a yoke.
[0031] Here the advantage is that the vibrations can be further improved damped.
[0032] In an advantageous embodiment, each leg is connected to each ring, in particular in a material-locking manner, and each leg is connected to the gusset ring. Here the advantage is that the vibrations can be further improved damped.
[0033] In an advantageous embodiment, the legs extend radially or the legs lie against the conical surface. Here the advantage is that a high stability can be achieved.
[0034] In an advantageous embodiment, each tab is passed through an opening of the gusset ring,
[0035] wherein the respective yoke of each tab is arranged on the side of the gusset ring which axially faces away from the ring. Here the advantage is that the respective tab can be connected both on the axially front side and on the axially rear side.
[0036] In an advantageous embodiment, the rings are spaced apart from the gusset ring in the axial direction or at least the gusset ring is spaced apart from the center of gravity of the rings in the axial direction. Here the advantage is that the vibrations can be better damped.
[0037] In an advantageous embodiment, the tabs are uniformly spaced apart from one another in the circumferential direction. Here the advantage is that the vibrations can be better damped.
[0038] In an advantageous embodiment, the rings are equidistantly spaced apart from one another in the radial direction. Here the advantage is that the vibrations can be better damped.
[0039] The utility model is not limited to the above-mentioned feature combinations. For the person skilled in the art, in particular from the purposes proposed and / or by comparison with the prior art, other reasonable combination possibilities of the above-mentioned feature combinations and / or individual features and / or the features to be explained below and / or the features of the drawings can be obtained. BRIEF DESCRIPTION OF DRAWINGS
[0040] The utility model will now be explained in more detail on the basis of the schematic drawings:
[0041] Figure 1 A fan cover device for an electric machine with a fan according to the utility model is shown in an oblique view.
[0042] Figure 2 A fan cover 1 of the fan cover device is shown in an oblique view.
[0043] LIST OF REFERENCE NUMBERS
[0044] 1 fan cover
[0045] 2 long hole
[0046] 3 round hole
[0047] 4 screw
[0048] 5 bore
[0049] 6 fan cover
[0050] 20 web
[0051] 21 ring
[0052] 22 gusset ring DETAILED DESCRIPTION
[0053] As shown, the electric machine has a fan cover arrangement which radially surrounds the fan and which is covered on the end side by a fan cover 1. The fan cover 1 is sheathed on a hollow-cylindrical fan cover 6 and is fixed with screws 4.
[0054] To this end, the fan cover 1 has an arrangement of rings 21 which are oriented concentrically to one another, which rings 21 are connected to one another by webs 20 which are oriented radially.
[0055] A gusset ring 22 which is also oriented concentrically to the rings 21 radially surrounds the rings 21.
[0056] The webs 20 extend from the radially innermost ring 21 to the gusset ring 22 and are connected, in particular in a materially bonded manner, to the gusset ring 22 and to each of the rings 21, preferably welded.
[0057] The gusset ring 22 is designed as a rotation body, wherein the rotation body is produced by an L-type rotation, a first leg of the L-type being oriented only in the radial direction and a second leg of the L-type which adjoins the first leg being oriented only in the axial direction.
[0058] Here, the axial direction is parallel to a rotor shaft of the electric machine and / or to a rotation axis of the fan, the radial direction being referenced to the rotation axis. Likewise, the circumferential direction is also referenced to the rotation axis.
[0059] The rotation axis of symmetry of the rotation body is oriented coaxially to the rotation axis of the rotor shaft.
[0060] The region of the gusset ring 22 which is produced by the rotation of the second leg is a hollow-cylindrical region, the region of the gusset ring 22 which is produced by the rotation of the first leg being a perforated-plate-like region.
[0061] The rings 21 are all radially spaced apart from one another.
[0062] Preferably, each web 20 is embodied as a U-type, the two legs of the U-type being embodied elongatedly such that each of the two parallel to one another legs is connected to each of the rings 21 and to the gusset ring 22, in particular in a materially bonded manner.
[0063] The respective yoke connecting the two legs of each U is passed through the respective opening of the gusset ring 22 to the side facing the fan cover. To this end, the legs are respectively implemented in a curved manner so as to extend in axial direction through the respective opening, although the legs extend substantially in radial direction in the remaining region.
[0064] The fan cover 6 is fixed on the stator housing of the electric machine.
[0065] As shown in Figure 1 and Figure 2 The rings 21 are preferably arranged concentrically to one another, but are arranged spaced apart from one another, in particular in axial direction, or respectively at least overlap the respective most proximal ring 21. In this way, the rings 21 can be arranged along a conical, in particular imaginary, surface.
[0066] The gusset ring 22 has long holes 2 on its edge region axially facing away from the rings 21 and has radially passing through circular holes 3 in its hollow cylindrical region, i.e. in the cylindrical sleeve-shaped region. The long holes 2 are preferably respectively spaced apart from the circular holes 3 in circumferential direction. In particular, the long holes 2 are arranged alternately with the circular holes 3 in circumferential direction. Thus, one circular hole 3 is respectively arranged in circumferential direction between every two most proximal long holes 2 from one another.
[0067] The area covered by the long holes 2 in axial direction encompasses the area covered by the circular holes 3 in axial direction.
[0068] The fan cover has radially passing through circular holes corresponding to the long holes 2 and the circular holes 3.
[0069] In the manufacture of the electric machine, before the fan cover 1 is connected with the fan cover 6, the screws 4 are respectively screwed into the respective circular hole of the fan cover 6 corresponding to the respective long hole 2, in particular arranged in the same circumferential position, so that the corresponding long hole 2 of the fan cover 1 is aligned with the screw, which can then serve as a guide when pushed axially. Thus, after the fan cover 1 is pushed axially onto the fan cover 6, it can be precisely oriented in circumferential direction. Further screws 4 can then be screwed through the circular holes of the fan cover 1 into the circular holes of the fan cover. After all screws 4 are tightened, the fan cover 1 is precisely aligned with the fan cover 6 and connected with one another.
[0070] The number of tabs is preferably more than five, in particular eight. More preferably, more than ten or more than fifteen rings 21 are provided.
[0071] According to further embodiments of the present invention, each tab is implemented in two pieces, wherein the two single pieces are arranged parallel to one another and are respectively connected, in particular materially connected, with all rings 21 and gusset rings 22.
Claims
1. A motor having a fan cover assembly, the fan cover assembly having a fan cover connected to the fan cover assembly. Its features are, The fan cover has multiple rings that are concentrically oriented and corner rings that are also concentrically oriented with these rings. The corner rings are arranged radially outward from all the rings. The tabs, which extend radially and are spaced apart from each other in the circumferential direction, are connected to all the rings and the corner plate rings in a material-locking manner.
2. The motor with a fan cover device according to claim 1, Its features are, The rings are arranged along an imaginary conical surface. The cone axis of the conical surface is oriented coaxially with the rotation axis of the motor's rotor shaft.
3. The motor with a fan cover device according to claim 1 or 2, Its features are, The axial direction is parallel to the rotation axis of the motor's rotor shaft, and / or, The radial direction is referenced to the rotation axis of the motor's rotor shaft, and / or, The circumferential direction is based on the rotation axis of the motor's rotor shaft.
4. The motor with a fan cover device according to claim 1 or 2, Its features are, All the rings are spaced apart from each other in the axial direction, or, The rings are arranged overlapping each other in the axial direction and / or overlapping with one or more of their nearest neighbors.
5. The motor with a fan cover device according to claim 2, Its features are, The corner ring has a perforated region and an adjacent cylindrical sleeve region, or... The angle plate ring has a perforated region and an adjacent conical region.
6. The motor with a fan cover device according to claim 5, characterized in that, The cone angle of the conical region is the same as the cone angle of the conical surface, and / or the conical region is contained within the conical surface.
7. The motor with a fan cover device according to claim 5, Its features are, The angle plate ring has an elongated hole in its axially opposite edge region and a radially penetrating circular hole in its cylindrical sleeve region. The elongated holes are spaced apart from the circular holes in the circumferential direction. Elongated holes are arranged alternately with round holes in the circumferential direction. In the circumferential direction, a circular hole is arranged between every two closest elongated holes. The area covered by the elongated hole in the axial direction surrounds the area covered by the circular hole in the axial direction.
8. The motor with a fan shroud as described in claim 1 or 2, Its features are, The fan shroud assembly is made of metal.
9. The motor with a fan cover device according to claim 8, characterized in that, The fan shroud assembly is made of aluminum or steel.
10. The motor with a fan shroud as described in claim 1 or 2, Its features are, The fan cover is designed as a bent part.
11. The motor with a fan shroud as described in claim 1 or 2, Its features are, Each splice has two legs that are oriented parallel to each other. These legs are spaced apart from each other. -Or these legs are connected to each other by a yoke at their respective first end regions.
12. The motor with a fan shroud according to claim 11, Its features are, Each leg is connected to each ring in a material-locking manner, and all are connected to the corner plate ring.
13. The motor with a fan shroud according to claim 11, Its features are, The legs extend radially or rest against the conical surface.
14. The motor with a fan cover device according to claim 11, Its features are, Each splice passes through the opening in the corner ring. Each splice's yoke is positioned on the axial side of the corner ring, away from the ring.
15. The motor with a fan shroud as described in claim 1 or 2, Its features are, The ring is spaced apart from the corner ring in the axial direction, or at least the corner ring is spaced apart from the center of gravity of the ring in the axial direction.
16. The motor with a fan shroud as described in claim 1 or 2, Its features are, The splices are evenly spaced apart from each other in the circumferential direction.
17. The motor with a fan shroud as described in claim 1 or 2, Its features are, The rings are evenly spaced apart from each other in the radial direction.