CN220915064U - Heat radiation structure for magnetic suspension fan - Google Patents

Abstract

The utility model relates to a heat radiation structure for a magnetic suspension fan, which comprises a shell, a stator, a rotor and a heat radiation assembly, wherein the shell is provided with a heat radiation cavity, a first air hole and a second air hole, the heat radiation cavity extends along the length direction of the shell, and the first air hole and the second air hole are respectively communicated with two ends of the heat radiation cavity; the stator is arranged in the shell, the rotor penetrates through the shell and the stator, an air channel is formed between the rotor and the stator, and the first air hole and the second air hole are respectively communicated with the air channel; the heat dissipation assembly comprises a fan which is arranged at one end of the rotor. The heat radiation structure for the magnetic suspension fan enables external airflow to flow through the first air hole, the second air hole and the air duct through rotation of the fan, so that heat generated by the stator and the rotor is taken away; meanwhile, the air flow flows through the heat dissipation cavity to quickly discharge the heat of the shell, so that the heat dissipation efficiency is improved; the heat dissipation structure for the magnetic suspension fan is good in heat dissipation effect and compact in structure.

Description

Heat dissipation structure for magnetic levitation fan

Technical Field

The utility model relates to the technical field of magnetic suspension fans, in particular to a heat dissipation structure for magnetic suspension fans.

Background technique

With the development of blowing technology, magnetic levitation fans have emerged. Magnetic levitation fans generate wind by energizing the fan stator to drive the rotor to drive the impeller to rotate. Since the stator will generate heat when powered on, overheating will cause damage to the fan. Magnetic levitation fans are generally cooled by water or fans.

For example, Chinese authorized patent CN217282576U discloses a cooling structure of a magnetic levitation fan, including a casing, a rotor accommodated in the casing, a stator accommodated in the casing and a heat dissipation fan connected to the casing, the casing is provided with an air inlet and an air outlet connected to the interior of the casing, the rotor is rotatably connected to the casing, a first gap connected to the air inlet is provided between the stator and the inner wall of the casing, the stator is arranged around the rotor, and a second gap connected to the first gap and the air outlet is provided between the stator and the rotor, and the heat dissipation fan is used to force the external air flow to flow through the air inlet, the first gap, the second gap and the air outlet in sequence, but the heat of the casing cannot be quickly discharged, affecting the heat dissipation efficiency.

Utility Model Content

Based on this, it is necessary to provide a heat dissipation structure for a magnetic levitation fan with rapid heat dissipation to address the above problems.

A heat dissipation structure for a magnetic levitation fan comprises a casing, a stator, a rotor and a heat dissipation assembly, wherein the casing is provided with a heat dissipation cavity, a first wind hole and a second wind hole, the heat dissipation cavity extends along the length direction of the casing, and the first wind hole and the second wind hole are respectively connected to the two ends of the heat dissipation cavity; the stator is installed in the casing, the rotor passes through the casing and the stator, an air duct is formed between the rotor and the stator, and the first wind hole and the second wind hole are respectively connected to the air duct; the heat dissipation assembly comprises a fan, and the fan is installed at one end of the rotor.

In one embodiment, the casing includes an outer shell, an inner shell, a first end plate and a second end plate, the outer shell and the inner shell are spaced apart to form the heat dissipation cavity, the first air hole passes through the outer shell and the inner shell, the second air hole passes through the outer shell and the inner shell, and the stator is installed in the inner shell; the first end plate and the second end plate respectively cover the two ends of the outer shell, and the first end plate and the second end plate respectively cover the two ends of the inner shell.

In one embodiment, the casing further includes a plurality of partitions, one end of the partition is connected to the inner shell, and the other end is connected to the outer shell; the partition extends along the length direction of the inner shell, and each partition is arranged along the circumference of the inner shell; the inner shell, the outer shell and the adjacent partitions form the heat dissipation cavity.

In one embodiment, the first end plate includes a first cover portion and a first connecting portion connected to the first cover portion, one end of the first cover portion abuts against one end of the casing, and the first connecting portion abuts against the inner side of the inner casing; the first connecting portion is provided with a first through hole, one end of the first through hole is connected to the second air hole, and the other end is connected to the air duct.

In one embodiment, the second end plate includes a second cover portion and a second connecting portion connected to the second cover portion, one end of the second cover portion abuts against one end of the housing, and the second connecting portion abuts against the inner side of the inner housing; the second end plate is provided with a second through hole, and the second through hole penetrates the second connecting portion and the second cover portion.

In one embodiment, the heat dissipation assembly further includes a heat dissipation element, which is sleeved on the stator, with one end of the heat dissipation element abutting against the stator and the other end abutting against the inner shell.

In one embodiment, the heat sink includes a base portion, a fin portion and a baffle portion, the base portion abuts against the outer side of the stator, there are multiple fin portions, each of the fin portions is evenly distributed along the circumference of the base portion, and one end of the fin portion abuts against the inner shell; a heat dissipation groove is formed between two adjacent fin portions, and the heat dissipation groove is connected to the first air hole; one side of the baffle portion abuts against one end of the fin portion, one end of the baffle portion abuts against the base portion, and the other end abuts against the inner shell.

In one embodiment, there are a plurality of the first air holes and a plurality of the second air holes, and each of the first air holes and the second air holes is arranged along the circumference of the housing.

In one embodiment, the aperture of the first air hole is larger than the aperture of the second air hole.

In one embodiment, two ends of the stator are arranged in a trumpet shape.

Compared with the prior art, the beneficial effects of the utility model are as follows:

The heat dissipation structure for a magnetic levitation fan of the utility model allows external air flow to flow through the first air hole, the second air hole and the air duct through the rotation of the fan, thereby taking away the heat generated by the stator and the rotor; at the same time, the air flow flows through the heat dissipation cavity to quickly discharge the heat of the casing, thereby improving the heat dissipation efficiency; the heat dissipation structure for a magnetic levitation fan has good heat dissipation effect and a compact structure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the assembly structure of a heat dissipation structure for a magnetic suspension fan shown in an embodiment of the utility model;

FIG2 is a schematic diagram of the structure of the outer shell, inner shell and partition in FIG1;

Fig. 3 is a cross-sectional view along line A-A in Fig. 1;

FIG. 4 is a schematic structural diagram of the stator and the heat sink in FIG. 1 .

The meanings of the numbers in the accompanying drawings are:

100. Heat dissipation structure for magnetic levitation fan;

10. Casing; 101. Heat dissipation cavity; 102. First air hole; 103. Second air hole; 11. Outer shell; 12. Inner shell; 13. First end plate; 131. First cover plate portion; 132. First connecting portion; 133. First through hole; 14. Second end plate; 141. Second cover plate portion; 142. Second connecting portion; 143. Second through hole; 15. Partition; 20. Stator; 30. Rotor; 301. Air duct; 40. Heat dissipation assembly; 41. Fan; 42. Heat sink; 421. Base portion; 422. Fin portion; 423. Baffle portion.

Detailed ways

In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

Please refer to Figures 1 to 4, which are a heat dissipation structure 100 for a magnetic levitation fan according to an embodiment of the utility model, comprising a housing 10, a stator 20, a rotor 30 and a heat dissipation assembly 40. The housing 10 is provided with a heat dissipation cavity 101, a first air hole 102 and a second air hole 103. The heat dissipation cavity 101 extends along the length direction of the housing 10, and the first air hole 102 and the second air hole 103 are respectively connected to the two ends of the heat dissipation cavity 101; an air duct 301 is formed between the rotor 30 and the stator 20, and the heat dissipation assembly 40 comprises a fan 41; the heat dissipation structure 100 for a magnetic levitation fan rotates the fan 41 so that the external air flows through the first air hole 102, the second air hole 103 and the air duct 301, thereby taking away the heat generated by the stator 20 and the rotor 30; at the same time, the air flows through the heat dissipation cavity 101, quickly discharges the heat of the housing 10, and improves the heat dissipation efficiency.

As shown in Fig. 1 to Fig. 3, in this embodiment, the housing 10 is provided with a heat dissipation cavity 101, a first air hole 102 and a second air hole 103. The heat dissipation cavity 101 extends along the length direction of the housing 10, and the first air hole 102 and the second air hole 103 are connected to the two ends of the heat dissipation cavity 101 respectively. The housing 10 includes an outer shell 11, an inner shell 12, a first end plate 13 and a second end plate 14. The outer shell 11 and the inner shell 12 are arranged at intervals to form the heat dissipation cavity 101. Optionally, the outer peripheral edge of the outer shell 11 is arranged in a wave shape to ensure a firm structure; the first air hole 102 penetrates the outer shell 11 and the inner shell 12, and the second air hole 103 penetrates the outer shell 11 and the inner shell 12. Optionally, there are multiple first air holes 102 and second air holes 103, and each of the first air holes 102 and the second air holes 103 is arranged along the circumference of the housing 10; further, the aperture of the first air hole 102 is larger than the aperture of the second air hole 103.

In one embodiment, the first end plate 13 and the second end plate 14 cover two ends of the outer shell 11 , respectively, and the first end plate 13 and the second end plate 14 cover two ends of the inner shell 12 , respectively, to close two ends of the heat dissipation cavity 101 . Optionally, the first end plate 13 includes a first cover portion 131 and a first connecting portion 132 connected to the first cover portion 131, one end of the first cover portion 131 abuts one end of the casing 10, and the first connecting portion 132 abuts the inner side of the inner shell 12; the first connecting portion 132 is provided with a first through hole 133, one end of the first through hole 133 is connected to the second air hole 103; further, the second end plate 14 includes a second cover portion 141 and a second connecting portion 142 connected to the second cover portion 141, one end of the second cover portion 141 abuts one end of the casing 10, and the second connecting portion 142 abuts the inner side of the inner shell 12; the second end plate 14 is provided with a second through hole 143, and the second through hole 143 penetrates the second connecting portion 142 and the second cover portion 141. The housing 10 further includes a plurality of partitions 15, one end of the partition 15 is connected to the inner housing 12, and the other end is connected to the outer housing 11; the partition 15 extends along the length direction of the inner housing 12, and each partition 15 is arranged along the circumference of the inner housing 12; the inner housing 12, the outer housing 11 and adjacent partitions 15 form a heat dissipation cavity 101. In one embodiment, one end of the partition 15 is fixed to the first cover plate portion 131, and the other end of the partition 15 is fixed to the second cover plate portion 141 by fasteners.

As shown in FIG. 3 and FIG. 4 , the stator 20 is installed in the housing 10 . Optionally, the stator 20 is installed in the inner housing 12 . Furthermore, both ends of the stator 20 are arranged in a trumpet shape.

As shown in FIG. 3 , the rotor 30 sequentially passes through the first end plate 13 , the stator 20 and the second end plate 14 , forming an air duct 301 between the rotor 30 and the stator 20 , and the first air hole 102 , the second air hole 103 , the first through hole 133 and the second through hole 143 are respectively connected to the air duct 301 .

As shown in Fig. 1, Fig. 3 and Fig. 4, the heat dissipation assembly 40 includes a fan 41, which is mounted on one end of the rotor 30. Optionally, the fan 41 is mounted on one end of the rotor 30 close to the second end plate 14. The heat dissipation assembly 40 also includes a heat sink 42, which is sleeved on the stator 20, with one end of the heat sink 42 abutting against the stator 20 and the other end abutting against the inner shell 12, so as to transfer the heat of the stator 20 to the housing 10. Optionally, the heat sink 42 includes a base portion 421, a fin portion 422 and a baffle portion 423, the base portion 421 abuts against the outer side of the stator 20, there are multiple fin portions 422, each fin portion 422 is evenly distributed along the circumference of the base portion 421, and one end of the fin portion 422 abuts against the inner shell 12; a heat dissipation groove (not marked in the figure) is formed between two adjacent fin portions 422, and the heat dissipation groove is connected to the first air hole 102 to take away the heat of the fin portion 422; one side of the baffle portion 423 abuts against one end of the fin portion 422, one end of the baffle portion 423 abuts against the base portion 421, and the other end abuts against the inner shell 12 to close one end of the heat dissipation groove, so that the airflow flows through the first air hole 102, the heat dissipation groove, the air duct 301 and the second through hole 143 in sequence to take away the heat generated by the stator 20 and the rotor 30.

When in use, the heat sink 42 transfers the heat of the stator 20 to the housing 10; as the fan 41 rotates, part of the external air flow flows through the first air hole 102, the heat dissipation slot, the air duct 301 and the second through hole 143 for discharge, and at the same time, part of the external air flow flows through the second air hole 103, the first through hole 133, the air duct 301 and the second through hole 143 to quickly discharge the heat generated by the stator 20 and the rotor 30; part of the external air flow flows through the first air hole 102, the heat dissipation cavity 101, the second air hole 103, the first through hole 133, the air duct 301 and the second through hole 143 to accelerate the heat dissipation of the housing 10.

The heat dissipation structure 100 for a magnetic levitation fan of the utility model allows the external airflow to flow through the first air hole 102, the second air hole 103 and the air duct 301 through the rotation of the fan 41, thereby taking away the heat generated by the stator 20 and the rotor 30; at the same time, the airflow flows through the heat dissipation cavity 101, quickly discharges the heat of the casing 10, and improves the heat dissipation efficiency; the heat dissipation structure 100 for a magnetic levitation fan has a compact structure and good heat dissipation effect.

The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims (10)

1. The heat dissipation structure for the magnetic suspension fan is characterized by comprising a shell, a stator, a rotor and a heat dissipation assembly, wherein the shell is provided with a heat dissipation cavity, a first air hole and a second air hole, the heat dissipation cavity extends along the length direction of the shell, and the first air hole and the second air hole are respectively communicated with two ends of the heat dissipation cavity; the stator is arranged in the shell, the rotor penetrates through the shell and the stator, an air channel is formed between the rotor and the stator, and the first air hole and the second air hole are respectively communicated with the air channel; the heat dissipation assembly comprises a fan, and the fan is installed at one end of the rotor.

2. The heat dissipating structure for a magnetic levitation wind turbine of claim 1, wherein the housing comprises an outer housing, an inner housing, a first end plate and a second end plate, the outer housing and the inner housing being spaced apart to form the heat dissipating cavity, the first air hole extending through the outer housing and the inner housing, the second air hole extending through the outer housing and the inner housing, the stator being mounted within the inner housing; the first end plate and the second end plate are respectively covered at two ends of the outer shell, and the first end plate and the second end plate are respectively covered at two ends of the inner shell.

3. The heat dissipating structure for a magnetic levitation blower of claim 2, wherein the housing further comprises a plurality of partitions having one end connected to the inner housing and the other end connected to the outer housing; the partition plates extend along the length direction of the inner shell, and each partition plate is arranged along the circumferential direction of the inner shell; the inner shell, the outer shell and the adjacent partition plates form the heat dissipation cavity.

4. The heat radiation structure for a magnetic levitation blower according to claim 2, wherein the first end plate comprises a first cover plate portion and a first connection portion connected to the first cover plate portion, one end of the first cover plate portion abuts against one end of the housing, and the first connection portion abuts against the inner side of the inner housing; the first connecting portion is provided with a first through hole, one end of the first through hole is communicated with the second air hole, and the other end of the first through hole is communicated with the air duct.

5. The heat radiation structure for a magnetic levitation blower according to claim 2, wherein the second end plate comprises a second cover plate portion and a second connection portion connected to the second cover plate portion, one end of the second cover plate portion abuts against one end of the housing, and the second connection portion abuts against the inner side of the inner housing; the second end plate is provided with a second through hole, and the second through hole penetrates through the second connecting portion and the second cover plate portion.

6. The heat dissipating structure for a magnetic levitation blower of claim 2, wherein the heat dissipating assembly further comprises a heat dissipating member, wherein the heat dissipating member is sleeved on the stator, one end of the heat dissipating member abuts against the stator, and the other end abuts against the inner housing.

7. The heat radiation structure for a magnetic levitation blower according to claim 6, wherein the heat radiation member comprises a base portion, a plurality of fin portions and a baffle portion, the base portion abuts against the outer side of the stator, each fin portion is uniformly distributed along the circumferential direction of the base portion, and one end of each fin portion abuts against the inner shell; a heat dissipation groove is formed between two adjacent fin parts, and the heat dissipation groove is communicated with the first air hole; one side of the baffle plate part is abutted against one end of the fin part, one end of the baffle plate part is abutted against the base part, and the other end is abutted against the inner shell.

8. The heat dissipation structure for a magnetic levitation fan according to claim 1, wherein the first air holes and the second air holes are all plural, and each of the first air holes and the second air holes is arranged along a circumferential direction of the housing.

9. The heat dissipating structure for a magnetic levitation blower of claim 1, wherein the first air hole has a larger aperture than the second air hole.

10. The heat dissipating structure for a magnetic levitation blower of claim 1, wherein the two ends of the stator are configured in a horn shape.