CN218953590U - Fan and range hood - Google Patents
Fan and range hood Download PDFInfo
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- CN218953590U CN218953590U CN202222898891.XU CN202222898891U CN218953590U CN 218953590 U CN218953590 U CN 218953590U CN 202222898891 U CN202222898891 U CN 202222898891U CN 218953590 U CN218953590 U CN 218953590U
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- impeller
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- 230000006835 compression Effects 0.000 claims abstract description 41
- 238000007906 compression Methods 0.000 claims abstract description 41
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 239000006096 absorbing agent Substances 0.000 claims description 6
- 239000006233 lamp black Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a fan and a range hood, wherein the fan comprises: the outer peripheral surface of a motor shaft of the motor is provided with an axial tangential surface and a radial tangential surface, and the axial tangential surface and the radial tangential surface form a first step surface; a columnar shaft is arranged on the top end surface of the motor shaft; the impeller is provided with a shaft sleeve at the center of the hub, and the inner circumferential surface of the shaft sleeve is provided with a second step surface; the motor shaft stretches into the shaft sleeve, the axial tangential surface is in contact with the axial surface of the second step surface, the top end surface of the motor shaft is positioned in the shaft sleeve, and the top end surface of the columnar shaft penetrates through the shaft sleeve and stretches into the shaft hole of the compression nut; the shaft hole of the compression nut is in threaded connection with the columnar shaft, and the bottom end surface of the compression nut is in butt joint with the top end surface of the shaft sleeve. According to the fan and the range hood, radial sliding of the impeller and the motor shaft is limited, and axial movement of the impeller is limited; the impeller is firmly assembled with the motor, so that the problem that the impeller is not firmly connected with the motor in the prior art is solved, and the normal operation of the fan is ensured.
Description
Technical Field
The utility model belongs to the technical field of electric appliances, and particularly relates to a fan and a range hood.
Background
The motor drives the impeller to rotate, and the matching scheme of the motor and the impeller at present is as follows: the motor shaft is provided with a pin shaft, the impeller hub is provided with a slot, the slot on the impeller hub is clamped on the motor shaft pin shaft, and the pin shaft is contacted with the hub clamping groove to drive the impeller to operate.
However, according to the assembly scheme, the impeller and the motor shaft are in line contact and bear force, and the bearing position of the impeller is lower; when the motor is started, the impact force is large, and the stress point is lower; when the dynamic balance and radial jump of the impeller are poor, the noise of the range hood is increased when the impeller runs at high speed; meanwhile, the pin shaft and the clamping groove are matched, so that the force arm of the impeller on the motor shaft is long, and damage to the motor can be aggravated when the dynamic balance of the impeller is poor.
In addition, the impeller is not firmly fixed due to errors or bending of the pin shaft assembly in the motor assembly process, so that noise is improved, and suction force is reduced.
Disclosure of Invention
The utility model provides a fan, which solves the technical problem that an impeller and a motor are not firmly connected in the prior art.
In order to solve the technical problems, the utility model is realized by adopting the following technical scheme:
a blower, comprising:
the motor comprises a motor shaft, wherein the outer circumferential surface of the motor shaft is provided with an axial tangential surface and a radial tangential surface, and the axial tangential surface and the radial tangential surface form a first step surface; the top end surface of the motor shaft is provided with a columnar shaft which is coaxial with the motor shaft, and the diameter of the columnar shaft is smaller than that of the motor shaft; the columnar shaft is provided with external threads;
the impeller is provided with a shaft sleeve at the center of a hub, and the inner circumferential surface of the shaft sleeve is provided with a second step surface;
the motor shaft stretches into the shaft sleeve, the axial tangential surface is in contact with the axial surface of the second step surface, the top end surface of the motor shaft is positioned in the shaft sleeve, and the top end surface of the columnar shaft penetrates through the shaft sleeve and stretches into the shaft hole of the compression nut;
the shaft hole of the compression nut is in threaded connection with the columnar shaft, and the bottom end surface of the compression nut is in butt joint with the top end surface of the shaft sleeve.
In some embodiments of the present application, a gap is provided between the radial tangential plane and the radial plane of the second step surface.
In some embodiments of the present application, two first step surfaces are provided, two first step surfaces are symmetrically arranged, and are adapted, two second step surfaces are provided, and two second step surfaces are symmetrically arranged.
In some embodiments of the present application, the compression nut is a blind nut, and the distance between the top end surface of the motor shaft and the top end surface of the shaft sleeve is equal to the length of the cylindrical shaft by adding the length of the shaft hole of the compression nut.
In some embodiments of the present application, the external thread of the cylindrical shaft and the internal thread of the shaft hole of the compression nut are tapping reverse threads.
In some embodiments of the present application, the impeller further includes a front disc, a middle disc, a rear disc, and blades; the blades penetrate through the front disc, the middle disc and the rear disc and are fixed with the front disc, the middle disc and the rear disc;
the center of the middle plate is provided with a mounting groove, and the center of the mounting groove is provided with a mounting hole; the hub is connected with the mounting groove, and the shaft hole of the shaft sleeve of the hub is opposite to the mounting hole.
In some embodiments of the present application, a plurality of riveting holes are uniformly distributed on the hub around the circumference of the shaft sleeve, and the hub is riveted with the mounting groove through rivets.
In some embodiments of the present application, the hub is provided with a plurality of grooves uniformly distributed around the circumference of the shaft sleeve.
In some embodiments of the present application, a reinforcing rib is disposed between two adjacent grooves.
Based on the design of the fan, the utility model also provides a range hood, which comprises the fan; the fan includes:
the motor comprises a motor shaft, wherein the outer circumferential surface of the motor shaft is provided with an axial tangential surface and a radial tangential surface, and the axial tangential surface and the radial tangential surface form a first step surface; the top end surface of the motor shaft is provided with a columnar shaft which is coaxial with the motor shaft, and the diameter of the columnar shaft is smaller than that of the motor shaft; the columnar shaft is provided with external threads;
the impeller is provided with a shaft sleeve at the center of a hub, and the inner circumferential surface of the shaft sleeve is provided with a second step surface;
the motor shaft stretches into the shaft sleeve, the axial tangential surface is in contact with the axial surface of the second step surface, the top end surface of the motor shaft is positioned in the shaft sleeve, and the top end surface of the columnar shaft penetrates through the shaft sleeve and stretches into the shaft hole of the compression nut;
the shaft hole of the compression nut is in threaded connection with the columnar shaft, and the bottom end surface of the compression nut is in butt joint with the top end surface of the shaft sleeve.
Compared with the prior art, the utility model has the advantages and positive effects that: according to the fan and the range hood, the axial tangential plane and the radial tangential plane are designed on the outer circumferential surface of the motor shaft to form the first step surface, the second step surface is designed on the inner circumferential surface of the shaft sleeve of the hub, and the first step surface is matched with the second step surface to limit the radial sliding of the impeller and the motor shaft; a cylindrical shaft is arranged on the top end surface of the motor shaft, the top end surface of the motor shaft is positioned in the shaft sleeve, the compression nut is in threaded connection with the cylindrical shaft, the bottom end surface of the compression nut is tightly matched with the top end surface of the hub shaft sleeve, and the impeller is limited to move in the axial direction; therefore, the fan provided by the utility model has the advantages that the impeller and the motor are firmly assembled, the problem that the impeller and the motor are not firmly connected in the prior art is solved, and the normal operation of the fan is ensured.
Other features and advantages of the present utility model will become more apparent from the following detailed description of embodiments of the present utility model, which is to be read in connection with the accompanying drawings.
Drawings
FIG. 1 is a cross-sectional view of one embodiment of a fan in accordance with the present utility model;
FIG. 2 is an enlarged view of the motor shaft of FIG. 1 mated with the hub;
FIG. 3 is a cross-sectional view of the hub of FIG. 2;
FIG. 4 is a cross-sectional view of the motor shaft and the cylindrical shaft of FIG. 2;
FIG. 5 is a cross-sectional view of the compression nut of FIG. 2;
FIG. 6 is an exploded view of one embodiment of a blower in accordance with the present utility model;
FIG. 7 is a top plan view of the hub of FIG. 6;
fig. 8 is a schematic view of the motor shaft of fig. 6.
Reference numerals:
100. a motor;
110. a motor shaft; 111. a first step surface; 111-1, axial tangential plane; 111-2, radial tangential plane;
120. a columnar shaft;
200. an impeller; 210. a front plate; 220. a middle plate; 230. a rear tray; 240. a blade;
250. a hub;
251. a shaft sleeve;
251-1, a second step surface; 251-1-1, axial face; 251-1-2, radial plane;
251-2, shaft hole;
252. a groove; 253. reinforcing ribs; 254. a rivet;
300. a compression nut; 310. and the shaft hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail with reference to the accompanying drawings and examples.
It should be noted that, in the description of the present utility model, terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model.
Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
Aiming at the technical problem that the connection between an impeller and a motor of a conventional fan is unstable, the utility model provides the fan and the range hood, which solve the problem that the impeller and the motor are not firmly matched, the impeller and the motor are firmly assembled, the noise increase of the range hood is avoided, and the suction reduction of the range hood is avoided. The fan and the range hood of the utility model are described in detail below with reference to the accompanying drawings.
Embodiment 1,
The fan of the present embodiment mainly includes a motor 100, an impeller 200, a compression nut 300, and the like, as shown in fig. 1 to 8.
The motor 100, the outer peripheral surface of the motor shaft 110 has an axial tangential plane 111-1 and a radial tangential plane 111-2, the axial tangential plane 111-1 and the radial tangential plane 111-2 form a first step surface 111; a cylindrical shaft 120 is arranged on the top end surface of the motor shaft 110, the cylindrical shaft 120 is coaxial with the motor shaft 110, and the diameter of the cylindrical shaft 120 is smaller than that of the motor shaft 110; the cylindrical shaft 110 has an external thread, as shown in fig. 4 and 8.
The impeller 200 has a hub 251 in the center of a hub 250, the hub 251 having a shaft hole 251-2, the inner peripheral surface of the hub 251 having a second stepped surface 251-1, the second stepped surface 251-1 having an axial surface 251-1-1 and a radial surface 251-1-2, and the second stepped surface 251-1 being adapted to the first stepped surface 111 as shown in fig. 3.
The motor shaft 110 is inserted into the shaft hole 251-2 of the shaft housing 251, the axial tangential surface 111-1 of the first step surface 111 is in contact with the axial surface 251-1-1 of the second step surface 251-1, the tip end surface of the motor shaft 110 is positioned in the shaft hole 251-2 of the shaft housing 251, and the tip end surface of the cylindrical shaft 120 is inserted into the shaft hole 310 of the compression nut 300 through the shaft hole 251-2 of the shaft housing 251.
The compression nut 300, the shaft hole 310 of which is in threaded connection with the cylindrical shaft 120, the bottom end surface of the compression nut 300 is pressed on the top end surface of the shaft sleeve 251, the bottom end surface of the compression nut 300 is abutted with the top end surface of the shaft sleeve 251, and the two are in close contact.
When the impeller 200 is assembled with the motor shaft 110, in the radial direction, as the first step surface 111 of the motor shaft 110 is matched with the second step surface 251-1 of the hub 250, the axial tangential surface 111-1 of the first step surface 111 is contacted with the axial surface 251-1-1 of the second step surface 251-1, so that the radial sliding of the hub 250 and the motor shaft 110 is limited, the impeller 200 is integrally stressed in the running process, the arm of force of the impeller 200 on the motor shaft 110 is short, and the damage to the motor is small; the problem that the impeller is not firmly fixed due to pin errors is solved; after assembly, the top end surface of the motor shaft 110 is positioned in the shaft hole 251-2 of the shaft sleeve 251 in the axial direction, namely, the top end surface of the motor shaft 110 is lower than the top end surface of the shaft sleeve 251, namely, the bottom end surface of the columnar shaft 120 (the bottom end surface of the columnar shaft 120 is flush with the top end surface of the motor shaft 110) is lower than the top end surface of the shaft sleeve 251, and the compression nut 300 can compress the hub 250 after being screwed, namely, the bottom end surface of the compression nut 300 is in close contact fit with the top end surface of the hub shaft sleeve 251, so that the hidden danger of shaking of the hub 250 in the axial direction is eliminated; accordingly, in the axial direction, the compression nut 300 compresses the hub 250 by the threaded engagement of the compression nut 300 with the cylindrical shaft 120 and the abutment of the compression nut 300 with the sleeve 251, limiting the axial movement of the hub 250.
In the fan of the present embodiment, an axial tangential plane 111-1 and a radial tangential plane 111-2 are designed on the outer circumferential surface of the motor shaft 110 to form a first step surface 111, a second step surface 251-1 is designed on the inner circumferential surface of the shaft sleeve 251 of the hub 250, and the first step surface 111 cooperates with the second step surface 251-1 to limit the radial sliding of the impeller 200 and the motor shaft 110; a cylindrical shaft 120 is arranged on the top end surface of the motor shaft 110, the top end surface of the motor shaft 110 is positioned in a shaft sleeve 251, a compression nut 300 is in threaded connection with the cylindrical shaft 120, the bottom end surface of the compression nut 300 is tightly matched with the top end surface of the hub shaft sleeve 251, and the impeller 200 is limited to move in the axial direction; therefore, the fan of this embodiment, the impeller 200 is firmly assembled with the motor 100, so as to solve the problem of weak connection between the impeller and the motor in the prior art, and ensure the normal operation of the fan.
In the fan of the embodiment, the motor shaft 110 is non-cylindrical, the first step surface 111 is processed on the motor shaft 110, the second step surface 251-1 is processed on the inner peripheral surface of the hub shaft sleeve 251, and the bottom end surface of the compression nut 300 is tightly matched with the top end surface of the hub shaft sleeve 251, so that the non-cylindrical motor shaft 110 and the hub 250 adopt a surface-matched fixing mode, the whole impeller 200 is stressed in the running process, the arm of force of the impeller 200 on the motor shaft 110 is short, and the damage to the motor 100 is small; and the problem of unstable impeller fixation caused by pin errors is solved.
In some embodiments of the present application, a gap exists between the radial tangential surface 111-2 of the first step surface 111 and the radial surface 251-1-2 of the second step surface 251-1, that is, the two surfaces are in clearance fit and do not contact, as shown in fig. 1, so as to prevent poor assembly caused by assembly interference due to machining errors of the end surfaces of the motor shaft 110 and the impeller shaft sleeve 251.
In some embodiments of the present application, in order to further improve the assembly stability of the motor shaft 110 and the impeller hub 250, two first step surfaces 111 are provided, two first step surfaces 111 are symmetrically arranged on the motor shaft 110, two second step surfaces 111-2 are provided, and two second step surfaces 111-2 are symmetrically arranged on the inner peripheral surface of the shaft sleeve 251.
In some embodiments of the present application, the compression nut 300 is a blind nut, i.e., the shaft hole 310 is a blind hole, and the distance between the top end surface of the motor shaft 110 and the top end surface of the shaft sleeve 251, plus the length of the shaft hole 310 of the compression nut 300, is equal to the length of the cylindrical shaft 120. Therefore, when the cylindrical shaft 120 extends into the shaft hole 310 of the compression nut 300 to reach a limit length, that is, when the top end surface of the cylindrical shaft 120 contacts with the top end of the shaft hole 310, the bottom end surface of the compression nut 300 abuts with the top end surface of the shaft sleeve 251, so that the connection stability of the motor shaft 110 and the hub 250 in the axial direction is further improved, the movement of the motor shaft 110 in the axial direction is further limited, and the motor shaft 110 is prevented from shaking in the axial direction.
In some embodiments of the present application, the external threads of the cylindrical shaft 120 and the internal threads of the shaft bore 310 of the compression nut 300 are both tapped reverse threads. When the impeller 200 rotates at a high speed, the compression nut 300 is tightened more and more to compress the impeller 200, thereby restricting the axial movement of the impeller 200.
In some embodiments of the present application, the impeller 200 further includes a front disc 210, a middle disc 220, a rear disc 230, and blades 240, as shown in fig. 6; the vane 240 passes through the front plate 210, the middle plate 220, and the rear plate 230, and the vane 240 is fixed with the front plate 210, the middle plate 220, and the rear plate 230 to ensure connection stability of the vane 240.
The center of the middle plate 220 is provided with a mounting groove, and the center of the mounting groove is provided with a mounting hole; the hub 250 is placed on the mounting groove to be coupled with the mounting groove, and the shaft hole 251-2 of the shaft sleeve 251 of the hub 250 is opposite to the mounting hole of the center plate 220 so that the motor shaft 110 passes through the mounting hole of the center plate 220 and protrudes into the shaft hole 251-2 of the shaft sleeve 251.
By designing the impeller 200 of the above-described structure, not only stability of the blades 240 but also stable mounting of the hub 250 on the center plate 220 can be ensured.
In some embodiments of the present application, a plurality of riveting holes are uniformly distributed around the circumference of the shaft sleeve 251 on the hub 250, and corresponding positions of the mounting grooves of the middle disc 220 are provided with the riveting holes, so that the hub 250 and the mounting grooves are riveted through the rivets 254, and the connection is simple, convenient, stable, and stable and reliable, and the hub 250 and the middle disc 220 are connected.
In some embodiments of the present application, a plurality of grooves 252 are uniformly distributed on the hub 250 around the circumference of the sleeve 251 to reduce the weight of the hub 250 and reduce the energy consumption.
In some embodiments of the present application, a reinforcing rib 253 is disposed between two adjacent grooves 252 to improve the structural strength of the hub 250 and prolong the service life of the hub 250, as shown in fig. 7.
Embodiment II,
Based on the design of the fan of the first embodiment, the second embodiment provides a range hood, which comprises the fan of the first embodiment.
Through designing in the lampblack absorber the fan, the impeller 200 of fan and motor 100 assembly are firm, and motor drive impeller high-speed rotation avoids the lampblack absorber noise increase, avoids the lampblack absorber suction to reduce, has improved the performance of lampblack absorber, has promoted the use experience of lampblack absorber.
The range hood of the embodiment solves the problems of noise increase and suction reduction of the range hood caused by weak matching of the motor 100 and the impeller 200.
It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, and that other variations, modifications, additions and substitutions are possible, without departing from the scope of the utility model as disclosed in the accompanying claims.
Claims (10)
1. A fan, characterized in that: comprising the following steps:
the motor comprises a motor shaft, wherein the outer circumferential surface of the motor shaft is provided with an axial tangential surface and a radial tangential surface, and the axial tangential surface and the radial tangential surface form a first step surface; the top end surface of the motor shaft is provided with a columnar shaft which is coaxial with the motor shaft, and the diameter of the columnar shaft is smaller than that of the motor shaft; the columnar shaft is provided with external threads;
the impeller is provided with a shaft sleeve at the center of a hub, and the inner circumferential surface of the shaft sleeve is provided with a second step surface;
the motor shaft stretches into the shaft sleeve, the axial tangential surface is in contact with the axial surface of the second step surface, the top end surface of the motor shaft is positioned in the shaft sleeve, and the top end surface of the columnar shaft penetrates through the shaft sleeve and stretches into the shaft hole of the compression nut;
the shaft hole of the compression nut is in threaded connection with the columnar shaft, and the bottom end surface of the compression nut is in butt joint with the top end surface of the shaft sleeve.
2. The blower of claim 1, wherein: and a gap is reserved between the radial tangential plane and the radial plane of the second step surface.
3. The blower of claim 1, wherein: the two first step surfaces are symmetrically arranged and matched with each other, the two second step surfaces are symmetrically arranged.
4. The blower of claim 1, wherein: the compression nut is a blind nut, and the distance between the top end face of the motor shaft and the top end face of the shaft sleeve is equal to the length of the columnar shaft by adding the length of the shaft hole of the compression nut.
5. The blower of claim 1, wherein: the external thread of the columnar shaft and the internal thread of the shaft hole of the compression nut are tapping reverse threads.
6. The blower of claim 1, wherein: the impeller also comprises a front disc, a middle disc, a rear disc and blades; the blades penetrate through the front disc, the middle disc and the rear disc and are fixed with the front disc, the middle disc and the rear disc;
the center of the middle plate is provided with a mounting groove, and the center of the mounting groove is provided with a mounting hole; the hub is connected with the mounting groove, and the shaft hole of the shaft sleeve of the hub is opposite to the mounting hole.
7. The blower of claim 6, wherein: the hub is uniformly provided with a plurality of riveting holes around the circumference of the shaft sleeve, and the hub and the mounting groove are riveted through rivets.
8. The blower of claim 6, wherein: the hub is uniformly provided with a plurality of grooves around the circumference of the shaft sleeve.
9. The blower of claim 8, wherein: and reinforcing ribs are arranged between two adjacent grooves.
10. The utility model provides a lampblack absorber which characterized in that: comprising a fan according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222898891.XU CN218953590U (en) | 2022-11-01 | 2022-11-01 | Fan and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222898891.XU CN218953590U (en) | 2022-11-01 | 2022-11-01 | Fan and range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218953590U true CN218953590U (en) | 2023-05-02 |
Family
ID=86136356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222898891.XU Active CN218953590U (en) | 2022-11-01 | 2022-11-01 | Fan and range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218953590U (en) |
-
2022
- 2022-11-01 CN CN202222898891.XU patent/CN218953590U/en active Active
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