JP2019122243A - Stator support structure, fan, and cooling device - Google Patents

Abstract

To provide a stator support structure, a fan, and a cooling device that reduce the influence of an actual machine due to motor vibration.SOLUTION: A stator support structure includes a disc-like base 100 and a support portion 200 located at the center of a base and supporting the stator, in which a plurality of through holes 101 are provided along the circumferential direction on the radially outer side of the support portion. A plurality of claws 102 are provided on the radially outer side of the through hole. The stator support structure according to an embodiment changes a transmission path of the vibration of a motor, and reduces the influence of an actual machine by the vibration of the motor.SELECTED DRAWING: Figure 2a

Description

  The present invention relates to the field of motors, and more particularly to a stator support structure, a fan and a cooling device.

  With the development of society and advances in science and technology, people are now pursuing a high quality of life, and there is a strong demand for quieter home appliances. For example, for the problem of noise reduction of an electrical product (for example, a cooling device), low vibration of the motor is urgently required. Referring to FIG. 1, the stator of the motor serving as the vibration source is attached to the base A of the stator carrier, and the vibration transmission path is A → B → C. That is, when vibration occurs in the stator, the vibration is transmitted from the base A through the rib portion B to the claw portion C, and the claw portion C transmits the vibration to the actual machine (for example, a cooling device), and the larger the vibration, The noise is loud and this reduces the user experience.

It should be noted that the above introduction to the technical background is described in such a manner as to make it easier for the person skilled in the art to understand while offering a clearer and complete explanation of the technical solution of the present invention. Not too much. It is not to be recognized that the above technical solutions are known to those skilled in the art only if those solutions are described in the background of the present invention.

  In order to solve at least one of the problems pointed out in the background art, embodiments of the present invention provide a stator support structure, a fan and a cooling device so as to reduce the effect of a motor vibration on the actual machine. .

  According to a first aspect of the embodiment of the present invention, a disk-like base and a support portion located at the center of the base and supporting the stator are provided, and radially outward of the support portion in the circumferential direction A plurality of through holes are provided along the radial direction outer side of the plurality of through holes, and a stator support structure is provided in which a plurality of claws are provided.

In a second aspect of the embodiment of the present invention, there is provided a blade, a motor rotatably disposed about a central axis, and a rotor for fixing the blade, and a radially inner side of the rotor. A stator having a stator for generating a rotating magnetic field with the rotor, the stator support structure according to the first aspect for supporting the stator, the stator, and the stator support structure And a circuit board disposed therebetween.

A third aspect of the embodiments of the present invention provides a cooling device comprising the fan according to the second aspect.

  The embodiment of the present invention has a beneficial effect of changing the transmission path of the motor's vibration by the stator support structure and reducing the influence of the motor's vibration on the actual machine.

With reference to the following description and the drawings, the specific embodiments of the present invention are disclosed in detail and also indicated that the principles of the present invention may be used. It should be understood that the embodiments of the present invention are not so limited in scope. Within the scope of the appended claims, the embodiments of the present invention include many variations, modifications and equivalents.

The features described and / or illustrated in one embodiment may be used in one or more other embodiments in a similar or similar manner, in combination with the features of the other embodiments, or Can switch the features of the other embodiments.

It should be emphasized that the term “comprises / includes” is used herein to indicate the presence of features, tailoring members, steps or members, but one or more other features, tailoring members, The presence or addition of steps or components is not precluded.

FIG. 1 is a schematic view of a conventional stator carrier (stator support structure). FIG. 2a is a schematic view of an embodiment of a stator support structure of Example 1; FIG. 2 b is a schematic view of another embodiment of the stator support structure of Example 1; FIG. 2 c is a schematic view of a further embodiment of the stator support structure of Example 1; FIG. 3 is a perspective view of an elastic member provided in the claw portion of the stator support structure of the first embodiment. FIG. 4 is a side view of an elastic member provided on the claw portion of the stator support structure of the first embodiment. FIG. 5 is a plan view of an elastic member provided in the claw portion of the stator support structure of the first embodiment. FIG. 6 is a schematic view of a fan of the second embodiment. FIG. 7 is a part of a cross-sectional view of the fan of the second embodiment.

  Elements and features described in one figure or embodiment of an embodiment of the present invention may be combined with elements and features shown in one or more other figures or embodiments. Further, in the drawings, like numerals indicate corresponding parts in the several views and may be used to indicate corresponding parts used in one or more embodiments.

  BRIEF DESCRIPTION OF THE DRAWINGS The attached drawings are for the purpose of further understanding the embodiments of the present invention, which constitute a part of the specification, and for illustrating the embodiments of the present invention, together with the character descriptions, the present invention Explains the principle of The drawings in the following description are only some embodiments of the present invention, and it is possible for the person skilled in the art to obtain other drawings based on these drawings without requiring inventive ideas, it is obvious.

  The foregoing specification and other features of the invention will be apparent from the following specification, with reference to the drawings. In the specification and the drawings, the specific embodiments of the present invention are specifically disclosed, and some of the embodiments capable of adopting the principle of the present invention are shown, but the present invention is not limited to the embodiments described. Not exclusively. On the contrary, the invention 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 to distinguish different elements from names, but in terms of the spatial arrangement and temporal order of these elements, etc. Rather, these elements should not be limited to these terms. The term "and / or" includes any one and all combinations of one or more of the associated listed items. The terms "include", "have", "include" etc mean the presence of the described feature, element, element or member, but the presence of one or more other features, elements, elements or member Or do not exclude additions.

In the examples of the present invention, the singular "one", "the" and the like include plural, and should be understood broadly as "one" or "one", and "one". It is not limited to the meaning. Furthermore, unless the context clearly indicates otherwise, the term "above" should be understood to include both singular and plural forms. Furthermore, unless the context clearly indicates otherwise, the term "in response to" should be understood to mean "depending at least in part". The term "based on" should be understood to mean "based at least in part".

In the embodiment of the present invention, for convenience of explanation, the radial direction centering on the center of the stator support structure is referred to as “radial direction”, and the circumferential direction centering on the center of the stator support structure is referred to as “circumferential direction”. This is for convenience of illustration and does not limit the use and manufacturing orientation of the stator support structure of the embodiments of the present invention.

In an embodiment of the present invention, the fan has a blade and a motor, the motor has a stator and a rotor, and the stator can be attached to the stator support structure of the embodiment of the present invention . The stator support structure further includes claws for connecting a real machine (for example, a cooling device). Hereinafter, embodiments of the present invention will be described with reference to the drawings. These embodiments are merely illustrative and do not limit the present invention.

Example 1
Embodiments of the present invention provide a stator support structure. FIG. 2a is a schematic view of an embodiment of the stator support structure, and as shown in FIG. 2a, the stator support structure comprises a disc-like base 100 and a support located at the center of the base 100. And a unit 200. The support portion 200 supports the stator. In the present embodiment, as shown in FIG. 2A, a plurality of through holes 101 are provided on the radially outer side of the support portion 200 along the circumferential direction. In FIG. 2a, three through holes 101 are shown. A plurality of claws 102 are provided radially outside of the plurality of through holes 101. Three claws 102 are shown in FIG. 2a.

According to the stator support structure of this embodiment, since the through hole 101 is provided between the claw portion 102 and the support portion 200, the vibration generated in the stator of the motor attached to the support portion 200 is the claw It is not directly transmitted to the part 102. That is, the transmission path 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 can be reduced.

In one embodiment of the present embodiment, the circumferential center of each of the claws 102, the circumferential center of the through hole 101 radially inward of the claws 102, and the center of the base 100 are on one straight line. positioned. That is, a straight line connecting the circumferential center of the claw portion 102 and the circumferential center of the through hole 101 radially inward of the claw portion 102 passes the center of the base 100. In the present embodiment, the center in the circumferential direction refers to the center of a straight line connecting two points at the outermost edge in the circumferential direction.

When the fan is driven, vibration is generated in the stator as the rotor rotates, and in the conventional stator support structure (stator carrier), the vibration generated in the stator is easily transmitted to the fan and the fan vibration or noise is easily generated. . According to the stator support structure of the present embodiment, the through hole 101 is provided in a straight line connecting the center of the claw portion 102 and the center of the base 100, so that an excitation source from the center of the base 100 is generated. The vibration transfer distance can be increased to reduce fan vibration and noise.

In the present embodiment, as shown in FIG. 2a, the number of through holes 101 and the number of claws 102 are three. The three through holes 101 and the three claws 102 may be arranged at equal intervals in the circumferential direction. By this structure, the real machine can be connected by the three claws 102 and can be stably supported. One through hole 101 is provided on the inner side in the radial direction of each of the claws 102, and the transmission distance of vibration from the motor at the center of the base 100 can be increased.

Further, in the present embodiment, the number of through holes 101 and the number of claws 102 are not limited, and other numbers of through holes 101 and claws 102 may be provided in a specific implementation process. The numbers of through holes 101 and claws 102 may be the same or different. The through holes 101 and the claws 102 may have a regular shape, an irregular shape, a symmetrical structure, or an asymmetrical structure. It is also good.

In one embodiment, the through holes 101 are arc-shaped. Taking one through hole 101 in FIG. 2 a as an example, as shown in FIG. 2 a, the radially outer side 101-1 of the through hole 101 is a circular arc, and the radially inner side 101 of the through hole 101. -2 is a straight line. This structure is advantageous for molding the through hole 101, and since the side 101-2 of the through hole 101 adjacent to the motor (support portion 200) is a straight line, the transmission distance of the vibration from the motor is further increased. Can.

In the present embodiment, as shown in FIG. 2a, the base 100 may be further provided with a wiring guide portion 103 positioned between two adjacent through holes 101. Since a circuit board is further provided between the stator and the support portion 200, in the present embodiment, by providing the wiring guide portion 103, the wiring drawn out from the circuit board can be guided. As a result, the wiring drawn from the circuit board does not need to pass through the base 100, and can be easily assembled, and the number of assembling steps can be reduced.

In one embodiment of the present embodiment, as shown in FIG. 2 a, the wiring guide portion 103 is formed by penetrating the base 100 along the thickness direction of the base 100 and of two adjacent through holes 101. A first hole 103-1 positioned between the first hole 103-1 and a first guide protruding from one side of the first hole 103-1 in the circumferential direction to the other side of the first hole 103-1 in the circumferential direction And 103-2 and a second guide portion 103-3 located radially outward of the first guide portion 103-2 and protruding in a direction opposite to the direction in which the first guide portion 103-2 protrudes. . The first guide portion 103-2, the second guide portion 103-3, and the base 100 here are integrally molded.

In the example of FIG. 2a, the second guide portion 103-3 is also located radially outside of the base 100, but the present embodiment is not limited to this. The second guide portion 103-3 may be located radially inward of the base 100. Further, the first guiding portion 103-2 and the second guiding portion 103-3 may protrude in opposite directions so as to easily guide the wiring.

Also, in the example of FIG. 2a, the second guide portion 103-3 is provided in the structure of the clip so that the wiring can be easily hooked, but this embodiment does not limit the specific structure, and It may be provided in any structure depending on the demand.

Further, in the example of FIG. 2A, an opening is further provided at an intermediate position of the first guide portion 103-2, whereby the cost can be reduced by reducing the amount of use of the resin material.

In the present embodiment, as shown in FIG. 2a, the support 200 further includes a plurality of second holes 104 on the radially outer side. Two second holes 104 are shown in FIG. 2 a, the plurality of second holes 104 being located between the two through holes 101. By this structure, the thickness of the base portion 100 can be reduced, the resin at the time of molding can be smoothed, and the stress can be made uniform. Also, two second holes 104 are shown in FIG. 2a. In the present embodiment, the number of second holes 104 is not limited, and one or more second holes 104 may be formed between any two through holes 101.

FIG. 2b is a schematic view of another embodiment of the stator support structure. As shown in FIG. 2b, in the embodiment, the through holes 101 are irregularly shaped. In the embodiment of FIG. 2a, the through hole 101 consists of a straight line 101-2 and an arc 101-1. As shown in FIG. 2a, the arc 101-1 is located radially outward of the straight line 101-2. In the embodiment of FIG. 2b, the through hole 101 is substantially convex. As shown in FIG. 2 b, the portion protruding in the middle of the through hole 101 is located radially outward of both ends. That is, the length of the radially outer side 101-3 of the through hole 101 in the circumferential direction is shorter than the length of the radially inner side 101-4 of the circumferential through hole 101. The other composition and structure of the stator support structure shown in FIG. 2b are the same as the embodiment of FIG. 2a and will not be redundantly described here.

FIG. 2 c is a schematic view of a further embodiment of the stator support structure. As shown in FIG. 2 c, in the embodiment, a cross-shaped cross connect portion 105 that divides the through hole 101 into a plurality of sub through holes is provided in the through hole 101. For convenience of explanation, FIG. 2 c shows only a situation in which one through hole 101 is divided into a plurality of sub through holes by the cross connect portion 105. Further, FIG. 2 c shows that the cross connect portion 105 is in the shape of a cross. Thereby, the cross connect section 105 divides the through hole 101 into four sub through holes. In another embodiment, the cross connect unit 105 may have another cross shape, for example, a cross shape. Thereby, the cross connect portion 105 can divide the through hole 101 into three sub through holes. In the present embodiment, the shape of the cross connect portion 105 is not limited. By the difference in the shape of the cross connect portion 105, the number of sub through holes also differs. The cross connect portion 105 can achieve the effect of increasing the strength and stability of the stator support structure.

In the present embodiment, an elastic member (not shown in FIGS. 2a, 2b and 2c) may be further provided on at least one side in the axial direction of the claw portion 102. FIG. 3 is a perspective view of an elastic member provided in the claw portion of the stator support structure of the first embodiment. FIG. 4 is a side view of an elastic member provided on the claw portion of the stator support structure of the first embodiment. FIG. 5 is a plan view of an elastic member provided in the claw portion of the stator support structure of the first embodiment. 3 to 5 are schematic views of different angles of the elastic member, and the elastic member may be rubber. By providing the elastic member, when the fan is attached to a real machine (for example, a cooling device) by the stator support structure of the present embodiment, the fan action can be performed, and fan vibration can be further reduced.

In the present embodiment, the stator support structure may be integrally molded of resin, or may be another forming method, and the present embodiment does not limit this.

In the above embodiment, the stator support structure can change the transmission path of the motor's vibration to reduce the influence of the motor's vibration on the actual machine.

Example 2
The present embodiment provides a fan, which can function as a fan of a cooling device. FIG. 6 is a schematic view of the fan, and FIG. 7 is a part of a cross-sectional view of the fan.

As shown in FIGS. 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 disposed rotatably about the central axis O, and is disposed radially inside the rotor 501 for fixing the blade 400 and the rotor 501, and generates a rotating magnetic field with the rotor 501. And a stator 502. The stator support structure 600 supports the stator 502. Circuit board 700 is disposed between stator 502 and stator support structure 600.

In this example, the stator support structure 600 comprises the composition of the stator support structure of Example 1, the contents of which are incorporated herein and will not be redundantly described herein.

In the present embodiment, the motor 500 may have other compositions. The prior art can be referred to for such other compositions and their structures and this example does not limit this.

When the fan is driven, vibration is generated in the stator as the rotor rotates, and conventionally, the vibration generated in the stator is easily transmitted to the fan, and the fan vibration or noise is easily generated. According to the fan structure of this embodiment, a through hole is provided in the straight line connecting the claws and the central axis, thereby lengthening the transmission distance of the vibration from the central vibration source and reducing the fan vibration. be able to.

Example 3
The present embodiment is a cooling device. The cooling device includes the fan described in the second embodiment, and further includes other normal members. This embodiment can refer to the prior art without limiting the structure, installation method and function of the general member.

In this embodiment, a through hole is provided in the straight line connecting the claws of the stator support structure and the central axis according to the structure of the fan of the second embodiment, whereby the transmission distance of the vibration from the central excitation source is increased. Thus, fan vibration can be reduced.

  The cooling device of this embodiment may be any cooling device using a fan, for example, a compressor using a fan. However, the present embodiment does not limit this, and the fan of Embodiment 2 may be used as a fan of another cooling device. For example, it may be used as a fan in household appliances such as an indoor unit of an air conditioner, an outdoor unit of an air conditioner, a water server, and a blower. Moreover, you may use as a fan in various apparatus information, an industrial apparatus, etc.

  The present invention has been described above in connection with specific embodiments. However, it should be understood by those skilled in the art that any of those descriptions is merely illustrative and is not a limitation on the scope of protection of the present invention. Although a person skilled in the art can make various changes and modifications to the present invention based on the spirit and principle of the present invention, those changes and modifications are also included in the scope of the present invention.

100 ... base 101 ... through hole 102 ... claw portion 103 ... wiring guide portion 103-1 ... first hole portion 103-2 ... first guide portion 103-3 ... Second guide portion 104: Hole portion 105: Cross connect portion 200: Support portion 400: Blade 500: Motor 501: Rotor 502: Stator 600: Stator support structure 700 ... circuit board O ... central axis

Claims (18)

A disc-like base,
A support located at the center of the base and supporting the stator;
A stator support structure comprising:
A plurality of through holes are provided along the circumferential direction on the radially outer side of the support portion,
A stator support structure, wherein a plurality of claws are provided on the radially outer side of the plurality of through holes. The center of the circumferential direction of each of the claws, the circumferential center of the through hole radially inward of the claws, and the center of the base are positioned in a straight line. Stator support structure as described. The stator support structure according to claim 1 or 2, wherein the number of the through holes and the number of the claws are three, respectively. The stator support structure according to claim 3, wherein the three through holes and the three claws are arranged at equal intervals in a circumferential direction. The stator support structure according to any one of claims 1 to 4, wherein the through hole has an arc shape. The stator support structure according to claim 5, 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. The stator support structure according to any one of claims 1 to 4, wherein the through hole has a convex shape. The stator support according to claim 7, wherein the length of the radially outer side of the through hole in the circumferential direction is shorter than the length of the radially inner side of the through hole in the circumferential direction. Construction. The cross-connect part of the cross shape which divides | segments the said through-hole into several sub through-holes is provided in each said through-hole, The any one of the Claims 1-4 characterized by the above-mentioned. Stator support structure. The stator support structure according to claim 9, wherein the number of the sub through holes is three or four. The stator support structure according to any one of claims 1 to 10, wherein the base further includes a wiring guide located between two adjacent through holes. . The wiring guide unit is
A first hole penetrating the base along the thickness direction of the base and located between two adjacent through holes;
A first guiding portion projecting from one side in the circumferential direction of the first hole to the other side in the circumferential direction of the first hole;
A second guide portion located radially outward of the first guide portion and protruding in a direction opposite to the protruding direction of the first guide portion;
The stator support structure according to claim 11, comprising: The stator according to any one of claims 1 to 12, further comprising a plurality of second holes positioned between two of the through holes on the radially outer side of the support portion. Support structure. The stator support structure according to claim 13, wherein the number of the second holes is two. The stator support structure according to any one of claims 1 to 14, wherein an elastic member is provided on at least one side in the axial direction of the claw portion. The stator support structure according to any one of claims 1 to 15, wherein the stator support structure is integrally formed of a resin. With the blade,
A motor rotatably disposed about a central axis, the rotor for fixing the blade, and being disposed radially inward of the rotor, and generating a rotating magnetic field between the rotor and the rotor A motor having a stator;
The stator support structure according to any one of claims 1 to 16, supporting the stator.
A circuit board disposed between the stator and the stator support structure;
Fans equipped with A cooling device comprising the fan according to claim 17.

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