CN109995178B - Stator supporting structure, fan and cooling device - Google Patents
Stator supporting structure, fan and cooling device Download PDFInfo
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- CN109995178B CN109995178B CN201810768895.1A CN201810768895A CN109995178B CN 109995178 B CN109995178 B CN 109995178B CN 201810768895 A CN201810768895 A CN 201810768895A CN 109995178 B CN109995178 B CN 109995178B
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- support structure
- hole
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The embodiment of the invention provides a stator supporting structure, a fan and a cooling device, wherein the stator supporting structure comprises: a disc-shaped base, and a support portion, located at the center of the base, for supporting a stator; a plurality of through holes are circumferentially provided on a radially outer side of the support portion, and a plurality of claw portions are provided on a radially outer side of the plurality of through holes. The stator supporting structure of the embodiment changes the transmission trend of the vibration of the motor and reduces the influence on the actual machine caused by the vibration of the motor.
Description
Technical Field
The invention relates to the field of motors, in particular to a stator supporting structure, a fan and a cooling device.
Background
With the development of society and the advancement of science and technology, people now pursue high-quality life, and the requirement for the silencing of household appliances is higher and higher.
For example, in order to reduce noise of electric products such as cooling devices, low vibration of a motor is a problem to be solved urgently. Referring to fig. 1, a stator of a motor, which is a vibration source, is mounted to a base portion a of a stator holder, and transmission tendency of vibration is a → B → C. That is, when the stator vibrates, the vibration is transmitted from the base portion a to the claw portion C via the rib portion B, and the claw portion C transmits the vibration to the actual machine (e.g., cooling device), and the larger the vibration is, the larger the noise is, thereby degrading the user experience.
It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the invention.
Disclosure of Invention
To solve at least one of the problems indicated in the background art, embodiments of the present invention provide a stator support structure, a fan, and a cooling apparatus to reduce an influence on a real machine due to vibration of a motor.
According to a first aspect of embodiments of the present invention, there is provided a stator support structure having:
a base of a disc shape, and
a support part located at the center of the base part for supporting the stator;
wherein a plurality of through holes are provided in a circumferential direction on a radial outer side of the support portion, and a plurality of claw portions are provided on a radial outer side of the plurality of through holes.
In one embodiment, a circumferential center of each of the claw portions, a circumferential center of the through hole on a radially inner side of the claw portion, and a center of the base portion are on a straight line.
In one embodiment, the number of the through holes and the number of the claw portions are three, respectively.
In this embodiment, the three through holes and the three claw portions may be arranged at equal intervals in the circumferential direction.
In one embodiment, the through hole is circular.
In this embodiment, the radially outer side of the through-hole may be an arc, and the radially inner side of the through-hole may be a straight line.
In one embodiment, the through-hole is in a shape of a letter.
In this embodiment, the length of the radially outer side of the through-hole in the circumferential direction may be smaller than the length of the radially inner side of the through-hole in the circumferential direction.
In one embodiment, a cross-connection portion is provided in each of the through-holes, the cross-connection portion dividing the through-hole into a plurality of sub-through-holes.
In this embodiment, the number of the sub through holes may be three or four.
In one embodiment, a wire guide portion is further provided on the base portion, the wire guide portion being located between two adjacent through holes.
In this embodiment, the wire guide may have:
a first hole portion that penetrates the base portion in a thickness direction of the base portion and is located between two adjacent through holes;
a first guide portion that protrudes from one side in a circumferential direction of the first hole portion to the other side in the circumferential direction of the first hole portion;
and a second guide portion located radially outward of the first guide portion and protruding toward a side opposite to a protruding direction of the first guide portion.
In one embodiment, the support portion has a plurality of second hole portions on a radially outer side thereof, the plurality of second hole portions being located between the two through holes.
In this embodiment, the number of the second hole portions may be two.
In one embodiment, an elastic member is provided on at least one side in the axial direction of the claw portion.
In one embodiment, the stator support structure is integrally molded in a resin.
According to a second aspect of embodiments of the present invention, there is provided a fan, wherein the fan has:
the blades are arranged on the upper surface of the shell,
a motor configured to be rotatable about a central axis, the motor including: a rotor to which the blades are fixed, and a stator that is disposed radially inside the rotor and generates a rotating magnetic field with the rotor;
a stator support structure supporting the stator; and
a circuit board disposed between the stator and the stator support structure;
wherein the stator support structure is the stator support structure of the first aspect.
According to a third aspect of embodiments of the present invention, there is provided a cooling device having the fan of the second aspect described above.
The embodiment of the invention has the beneficial effects that: through the stator supporting structure, the transmission trend of the vibration of the motor is changed, and the influence on the actual machine caused by the vibration of the motor is reduced.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the scope of the terms of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
Elements and features described in one drawing or one implementation of an embodiment of the invention may be combined with elements and features shown in one or more other drawings or implementations. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views, and may be used to designate corresponding parts for use in more than one embodiment.
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
fig. 1 is a schematic view of a conventional stator holder (stator support structure);
FIG. 2a is a schematic view of one embodiment of a stator support structure of example 1;
FIG. 2b is a schematic view of another embodiment of the stator support structure of example 1;
FIG. 2c is a schematic view of yet another embodiment of the stator support structure of example 1;
fig. 3 to 5 are schematic views of the elastic member provided on the claw portion of the stator support structure of embodiment 1;
FIG. 6 is a schematic view of a fan of embodiment 2;
fig. 7 is a part of a sectional view of the fan of embodiment 2.
Detailed Description
The foregoing and other features of the invention will become apparent from the following description taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the embodiments in which the principles of the invention may be employed, it being understood that the invention is not limited to the embodiments described, but, on the contrary, is intended to cover all modifications, variations, and equivalents falling within the scope of the appended claims.
In the embodiments of the present invention, the terms "first", "second", and the like are used for distinguishing different elements by name, but do not denote a spatial arrangement, a temporal order, or the like of the elements, and the elements should not be limited by the terms. The term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprising," "including," "having," and the like, refer to the presence of stated features, elements, components, and do not preclude the presence or addition of one or more other features, elements, components, and elements.
In embodiments of the invention, the singular forms "a", "an", and the like include the plural forms and are to be construed broadly as "a" or "an" and not limited to the meaning of "a" or "an"; furthermore, the term "comprising" should be understood to include both the singular and the plural, unless the context clearly dictates otherwise. Further, the term "according to" should be understood as "at least partially according to … …," and the term "based on" should be understood as "based at least partially on … …," unless the context clearly dictates otherwise.
In the embodiment of the present invention, for convenience of description, a radial direction centering on the center of the stator support structure is referred to as a "radial direction", and a circumferential direction centering on the center of the stator support structure is referred to as a "circumferential direction", but this is for convenience of description only, and does not limit the orientation of the stator support structure in use and manufacture of the embodiment of the present invention.
In an embodiment of the present invention, the fan has blades and a motor having a stator and a rotor, and the stator may be mounted on a stator support structure of an embodiment of the present invention, which also has a claw portion for connecting a real machine (e.g., a cooling device). Various embodiments of the present invention will be described below with reference to the accompanying drawings. These embodiments are merely exemplary and are not intended to limit the present invention.
Example 1
The embodiment of the invention provides a stator supporting structure. Fig. 2a is a schematic view of an embodiment of the stator support structure, as shown in fig. 2a, having a disc-shaped base 100 and a support portion 200 at the center of the base 100, the support portion 200 supporting a stator. In the present embodiment, as shown in fig. 2a, a plurality of through holes 101 are provided in the circumferential direction on the radially outer side of the support portion 200, three through holes 101 are shown in fig. 2a, and a plurality of pawl portions 102 are provided on the radially outer side of the plurality of through holes 101, three pawl portions 102 are shown in fig. 2 a.
With the stator support structure of the present embodiment, since the through hole 101 is provided between the claw portion 102 and the support portion 200, the vibration generated by the stator of the motor attached to the support portion 200 is not directly transmitted to the claw portion 102, that is, the transmission tendency of the vibration of the motor is changed, and the influence of the vibration of the motor on the actual machine connected to the claw portion 102 is reduced.
In one embodiment of the present embodiment, the circumferential center of each pawl portion 102, the circumferential center of the through hole 101 radially inside the pawl portion 102, and the center of the base portion 100 are on a straight line. That is, a line connecting the circumferential center of the claw portion 102 and the circumferential center of the through hole 101 radially inside the claw portion 102 passes through the center of the base portion 100. In the present embodiment, the circumferential center refers to the center of a line connecting two points on the most peripheral edge in the circumferential direction.
With this structure, when the fan is driven, the stator vibrates with the rotation of the rotor, and according to the conventional stator support structure (stator holder), the vibration generated by the stator is easily transmitted to the fan, and the vibration and noise of the fan are easily generated. With the stator support structure of the present embodiment, the through-hole 101 is provided on the line connecting the center of the claw portion 102 and the center of the base portion 100, so that the vibration transmission distance from the vibration source at the center of the base portion 100 becomes long, and the vibration of the fan can be reduced, thereby reducing noise.
In the present embodiment, as shown in fig. 2a, the number of the through holes 101 and the number of the pawl portions 102 are three, respectively, and the three through holes 101 and the three pawl portions 102 may be arranged at equal intervals in the circumferential direction. With this structure, the three claws 102 are connected to the actual machine to provide a stable support, and the through hole 101 is provided on the radially inner side of each claw 102 to extend the transmission of the vibration of the motor from the center of the base 100.
Further, the present embodiment does not limit the number of the through holes 101 and the number of the claw portions 102, and in a concrete implementation, other numbers of the through holes 101 and the claw portions 102 may be provided, and the numbers of the through holes 101 and the claw portions 102 may be the same or different, and the through holes 101 and the claw portions 102 may be regular shapes or irregular shapes, and may be symmetrical structures or asymmetrical structures.
In one embodiment, the through-hole 101 is circular. Taking one through-hole 101 in fig. 2a as an example, as shown in fig. 2a, a radially outer side 101-1 of the through-hole 101 is an arc, and a radially inner side 101-2 of the through-hole 101 is a straight line. This structure is advantageous for molding the through-hole 101, and the side 101-2 of the through-hole 101 close to the motor (support portion 200) is linear, thereby further extending the transmission distance of the vibration from the motor.
In the present embodiment, as shown in fig. 2a, a wire guide 103 may be further disposed on the base 100, and the wire guide 103 is located between two adjacent through holes 101. Since a circuit board is further provided between the stator and the supporting portion 200, the present embodiment can guide the wires led out from the circuit board by providing the wire guide portion 103. Therefore, the lead wire from the circuit board does not need to pass through the base part 100, the assembly is simple, and the assembly labor can be saved.
In one embodiment of the present embodiment, as shown in fig. 2a, the wire guide 103 has a first hole portion 103-1, a first guide portion 103-2, and a second guide portion 103-3, the first hole portion 103-1 penetrates the base 100 in the thickness direction of the base 100 and is located between two adjacent through holes 101, the first guide portion 103-2 protrudes from one side in the circumferential direction of the first hole portion 103-1 to the other side in the circumferential direction of the first hole portion 103-1, and the second guide portion 103-3 is located radially outward of the first guide portion 103-2 and protrudes toward the side opposite to the protruding direction of the first guide portion 103-2. The first guide portion 103-2, the second guide portion 103-3 and the base portion 100 are integrally formed.
In the example of fig. 2a, the second guide part 103-3 is also located radially outside the base part 100, but this embodiment is not limited thereto, and the second guide part 103-3 may also be located radially inside the base part 100, as long as it is ensured that the first guide part 103-2 and the second guide part 103-3 protrude in opposite directions in order to guide the wire.
In the example of fig. 2a, the second guide part 103-3 is provided in a clip configuration to hook the wire, but the present embodiment is not limited to the specific configuration thereof, and may be provided in any configuration according to actual needs.
In the example of fig. 2a, an opening is further provided at an intermediate position of the first guide portion 103-2, thereby reducing the amount of resin material used and reducing the cost.
In the present embodiment, as shown in fig. 2a, the support portion 200 further has a plurality of second hole portions 104, two of which are shown in fig. 2a, on the radially outer side thereof, and the plurality of second hole portions 104 are located between the two through holes 101. With this structure, the thickness of the base 100 can be reduced, and the resin can be smoothly molded and the stress can be made uniform. In addition, two second hole portions 104 are shown in fig. 2a, and the present embodiment does not limit the number of the second hole portions 104, and one or more second hole portions 104 may be formed between any two through holes 101.
Fig. 2b is a schematic view of another embodiment of the stator support structure, in which the through-holes 101 are irregularly shaped, as shown in fig. 2 b. In the embodiment of fig. 2a, the through-hole 101 is formed by a straight line 101-2 and an arc 101-1, the arc 101-1 being located radially outside the straight line 101-2 as shown in fig. 2 a. In the embodiment of fig. 2b, the through-hole 101 has a substantially convex shape, and as shown in fig. 2b, the middle protruding portion of the through-hole 101 is located radially outward from both ends, that is, the length of the radially outer side 101-3 of the through-hole 101 in the circumferential direction is smaller than the length of the radially inner side 101-4 of the through-hole 101 in the circumferential direction. The other components and structures of the stator support structure shown in fig. 2b are the same as those of the embodiment of fig. 2a, and a description thereof will not be repeated.
Fig. 2c is a schematic view of another embodiment of the stator support structure, and as shown in fig. 2c, in this embodiment, a cross connection portion 105 is provided inside the through hole 101 in a cross shape, and the cross connection portion 105 divides the through hole 101 into a plurality of sub-through holes. For convenience of explanation, fig. 2c shows a case where only one through-hole 101 is divided into a plurality of sub-through-holes by the cross-connecting portion 105. It is noted that fig. 2c shows that the cross-connection 105 has a cross shape, so that the cross-connection 105 divides the through-hole 101 into four sub through-holes, but in another embodiment, the cross-connection 105 may have another cross shape, for example, a herringbone cross shape, so that the cross-connection 105 divides the through-hole 101 into three sub through-holes. In the present embodiment, the shape of the cross-connecting portion 105 is not limited, and the number of sub through holes differs depending on the shape of the cross-connecting portion 105. The cross-connecting portion 105 can provide an effect of increasing the strength and stability of the stator support structure.
In this embodiment, an elastic member (not shown in fig. 2a, 2b, and 2 c) may also be provided on at least one side in the axial direction of the claw portion 102. Fig. 3 to 5 are schematic views of different angles of the elastic member, which may be rubber, and by providing the elastic member, the fan can be mounted on a real machine (for example, a cooling device) through the stator support structure of the present embodiment, so as to play a role of buffering, and further reduce the fan vibration.
In this embodiment, the stator supporting structure may be integrally molded by resin, or may be formed in other manners, which is not limited in this embodiment.
In the above embodiments, the stator support structure changes the transmission tendency of the vibration of the motor, and reduces the influence on the actual machine due to the vibration of the motor.
Example 2
The present embodiment provides a fan that can function as a fan of a cooling device to perform a cooling function. Fig. 6 is a schematic view of the fan of the present embodiment, and fig. 7 is a part of a sectional view of the fan.
As shown in fig. 6 and 7, the fan includes: a blade 400, a motor 500, a stator support structure 600, and a circuit board 700. The motor 500 is configured to be rotatable around a central axis O, and includes: a rotor 501 having fixed blades 400, and a stator 502 disposed radially inside the rotor 501 and generating a rotating magnetic field with the rotor 501. The stator support structure 600 is used to support the stator 502. The circuit board 700 is disposed between the stator 502 and the stator support structure 600.
In this embodiment, the stator supporting structure 600 has the composition of the stator supporting structure of embodiment 1, and the content thereof is incorporated herein and will not be described again.
In this embodiment, the motor 500 may also have other components, and regarding the other components and the structure thereof, reference may be made to the prior art, which is not limited in this embodiment.
When the fan is driven, the stator vibrates with the rotation of the rotor, and the vibration generated by the stator is easily transmitted to the fan in the past, so that the vibration or noise of the fan is easily generated.
Example 3
This example provides a cooling device having the fan described in example 2, along with other conventional components. The present embodiment does not limit the structure, arrangement and function of the conventional components, and reference may be made to the prior art.
In this embodiment, with the structure of the fan according to embodiment 2, since the through-hole is provided on the line connecting the claw portion of the stator support structure and the center axis, the transmission distance of the vibration from the center vibration source becomes long, and the fan vibration can be reduced.
The cooling device of the present embodiment may be any cooling device using a fan, and may be, for example, a compressor using a fan. However, the present embodiment is not limited thereto, and the fan of embodiment 2 may be used as a fan of another cooling device, for example, an indoor unit of an air conditioner, an outdoor unit of an air conditioner, a water dispenser, a blower, or the like in a home appliance, or a fan in various information devices, industrial devices, or the like.
While the invention has been described with reference to specific embodiments, it will be apparent to those skilled in the art that these descriptions are illustrative and not intended to limit the scope of the invention. Various modifications and alterations of this invention will become apparent to those skilled in the art based upon the spirit and principles of this invention, and such modifications and alterations are also within the scope of this invention.
Claims (17)
1. A stator support structure having:
a base of a disc shape, and
a support part located at the center of the base part for supporting the stator;
the base portion is formed with a plurality of through holes which are provided in a circumferential direction and located radially outward of the support portion, and a claw portion is provided radially outward of each through hole, and a circumferential center of each claw portion, a circumferential center of the through hole radially inward of the claw portion, and a center of the base portion are aligned.
2. The stator support structure according to claim 1, wherein the number of the through holes and the number of the claw portions are three, respectively.
3. The stator support structure according to claim 2, wherein three through holes and three claw portions are arranged at equal intervals in a circumferential direction.
4. The stator support structure of claim 1, wherein the through-hole is circular arc-shaped.
5. The stator support structure according to claim 4, wherein a radially outer side of the through-hole is a circular arc, and a radially inner side of the through-hole is a straight line.
6. The stator support structure of claim 1, wherein the through-holes are embossed.
7. The stator support structure according to claim 6, wherein a length of a radially outer side of the through hole in the circumferential direction is smaller than a length of a radially inner side of the through hole in the circumferential direction.
8. The stator support structure according to claim 1, wherein a cross-connection portion in a cross shape is provided in each of the through holes, the cross-connection portion dividing the through hole into a plurality of sub through holes.
9. The stator support structure of claim 8, wherein the number of the sub through-holes is three or four.
10. The stator support structure according to claim 1, wherein a wire guide is further provided on the base, the wire guide being located between adjacent two of the through holes.
11. The stator support structure according to claim 10, wherein the wire guide portion has:
a first hole portion that penetrates the base portion in a thickness direction of the base portion and is located between two adjacent through holes;
a first guide portion that protrudes from one side in a circumferential direction of the first hole portion to the other side in the circumferential direction of the first hole portion;
and a second guide portion located radially outward of the first guide portion and protruding toward a side opposite to a protruding direction of the first guide portion.
12. The stator support structure according to claim 1, wherein a plurality of second hole portions are provided radially outside the support portion, and the plurality of second hole portions are located between the two through holes.
13. The stator support structure according to claim 12, wherein the number of the second hole portions is two.
14. The stator support structure according to claim 1, wherein an elastic member is provided on at least one side in an axial direction of the claw portion.
15. The stator support structure of any one of claims 1 to 14, wherein the stator support structure is a resin-molded one-piece.
16. A fan, wherein the fan has:
the blades are arranged on the upper surface of the shell,
a motor configured to be rotatable about a central axis, the motor including: a rotor to which the blades are fixed, and a stator that is disposed radially inside the rotor and generates a rotating magnetic field with the rotor;
a stator support structure supporting the stator; and
a circuit board disposed between the stator and the stator support structure;
wherein the stator support structure is as claimed in any one of claims 1 to 15.
17. A cooling device, wherein the cooling device has the fan of claim 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018216828A JP2019122243A (en) | 2017-12-29 | 2018-11-19 | Stator support structure, fan, and cooling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711472692 | 2017-12-29 | ||
| CN201711472692X | 2017-12-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3401640B2 (en) * | 2000-02-29 | 2003-04-28 | ミネベア株式会社 | Blower and manufacturing method thereof |
| KR20050099352A (en) * | 2004-04-09 | 2005-10-13 | 엘지전자 주식회사 | Front suction/discharge type outdoor unit for air conditioner |
| US20080201928A1 (en) * | 2007-02-27 | 2008-08-28 | Continental Automotive Canada Inc. | Method of assembling a fan module for engine cooling applications |
| CN101260891A (en) * | 2007-03-09 | 2008-09-10 | 富准精密工业(深圳)有限公司 | Heat radiation fan and method of manufacture |
| CN101469720A (en) * | 2007-12-28 | 2009-07-01 | 台达电子工业股份有限公司 | Fan and stator holder thereof |
| DE202008002356U1 (en) * | 2008-02-19 | 2009-06-25 | Ebm-Papst Mulfingen Gmbh & Co. Kg | compact fans |
| CN101832279B (en) * | 2009-03-13 | 2013-07-03 | 富准精密工业(深圳)有限公司 | Cooling fan |
| JP5343656B2 (en) * | 2009-03-27 | 2013-11-13 | 日産自動車株式会社 | Motor stator core assembly |
| CN205377620U (en) * | 2016-01-15 | 2016-07-06 | 上海康源电气有限公司 | Refrigerator is with brushless fan motor of six groove three -phase external rotors |
| CN206625993U (en) * | 2017-01-21 | 2017-11-10 | 东莞市擎宇电子科技有限公司 | Modified form luminescence fan |
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