Fan structure and fan

Abstract

The present invention discloses a fan structure and a fan, the fan structure comprises a first motor and a mounting bracket, the first motor is provided with a first heat dissipation hole, the first motor is also provided with a first mounting portion; the mounting bracket is provided with a heat dissipation cavity and a second heat dissipation hole connected with the heat dissipation cavity, the mounting bracket is provided with a second mounting portion for connecting with the first mounting portion; when the first mounting portion and the second mounting portion are connected, the first heat dissipation hole is connected with the second heat dissipation hole. The fan structure and the fan have a better heat dissipation effect when in use. When the fan structure is in use, the first motor is connected to the mounting bracket through the first mounting portion and the second mounting portion to be assembled on the mounting bracket, at which time the first heat dissipation hole and the second heat dissipation hole are connected, and the heat generated by the first motor during operation can be discharged along the first heat dissipation hole to the second heat dissipation hole and then to the heat dissipation cavity, thereby dissipating the heat of the first motor. Compared with the traditional first motor in which the heat dissipation of the first motor is blocked during installation, the first motor in the present application has a better heat dissipation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, and in particular to a fan structure and a fan. Background Art

[0002] The main features of floor fans are large air volume and low noise. In the hot summer, floor fans have good effects on indoor ventilation, heatstroke prevention and cooling, and environmental improvement. Floor fans can be used by placing them on the ground stably, which is safe. Floor fans can be widely used in warehouses, workshops, restaurants, homes and other places of industrial and mining enterprises.

[0003] Floor fans generally include a motor. However, when a conventional floor fan is in use, the heat dissipation effect of the motor is not ideal, which affects the use of the motor. Summary of the invention

[0004] Based on this, in order to solve the problem that the heat dissipation effect of the motor of a traditional floor fan is not ideal when in use, which affects the use of the motor, a fan structure and a fan are proposed. The fan structure and the fan have better heat dissipation effect when in use.

[0005] The specific technical solutions are as follows:

[0006] On the one hand, the present application relates to a fan structure, including a first motor and a mounting bracket, the first motor is provided with a first heat dissipation hole, and the first motor is also provided with a first mounting portion; the mounting bracket is provided with a heat dissipation cavity and a second heat dissipation hole connected to the heat dissipation cavity, and the mounting bracket is provided with a second mounting portion for connecting to the first mounting portion; when the first mounting portion and the second mounting portion are connected, the first heat dissipation hole is connected to the second heat dissipation hole.

[0007] When the above-mentioned fan structure is in use, the first motor is connected through the first mounting part and the second mounting part to be assembled on the mounting bracket. At this time, the first heat dissipation hole and the second heat dissipation hole are connected. The heat generated by the first motor during operation can be discharged along the first heat dissipation hole to the second heat dissipation hole and then to the heat dissipation cavity, thereby dissipating the heat of the first motor. Compared with the traditional first motor in which the heat dissipation of the first motor is hindered during installation, the heat dissipation effect of the first motor in the present application is better.

[0008] The technical solution is further described below:

[0009] In one embodiment, a first heat dissipation gap is formed between the mounting bracket and the first motor, so that part of the heat generated when the first motor is running can be discharged along the first heat dissipation gap, thereby improving the heat dissipation efficiency of the first motor.

[0010] In one embodiment, the first mounting portion and the second mounting portion are positioned and matched.

[0011] In one embodiment, a second motor is further included, and the second motor is fixedly arranged in the heat dissipation cavity. In this way, the first motor and the mounting bracket are positioned and mounted by the first mounting portion and the second mounting portion.

[0012] In one embodiment, the second motor is provided with a third mounting portion, and the side wall of the heat dissipation cavity is formed with a fourth mounting portion that is positioned and matched with the third mounting portion. In this way, the second motor is positioned and mounted with the heat dissipation cavity through the positioning and matching of the third mounting portion and the fourth mounting portion.

[0013] In one embodiment, the fan structure also includes a capacitor, the capacitor is provided with a fifth mounting portion, and the mounting bracket is further provided with a sixth mounting portion positioned and matched with the fifth mounting portion, and the capacitor is positioned and mounted with the mounting bracket through the positioning and matching of the fifth mounting portion and the sixth mounting portion.

[0014] In one of the embodiments, the mounting bracket is further formed with a mounting groove, and when the fifth mounting portion and the sixth mounting portion are positioned and matched, the capacitor is disposed in the mounting groove.

[0015] In one embodiment, the capacitor and the side wall of the mounting groove form a second heat dissipation gap, the second heat dissipation gap is connected to the mounting groove, the mounting bracket is further provided with a third heat dissipation hole, and the heat dissipation cavity is connected to the mounting groove through the third heat dissipation hole. In this way, after the heat generated by the first motor at work enters the heat dissipation cavity, it will enter the mounting groove along the third heat dissipation hole and finally be discharged along the second heat dissipation gap.

[0016] In one embodiment, the fan structure further includes a mainboard, and the mainboard is fixed to the mounting bracket.

[0017] In one embodiment, the mainboard is snap-fitted to the mounting bracket, so as to facilitate assembly and disassembly between the mainboard and the mounting bracket.

[0018] In one embodiment, the mounting bracket is provided with a fourth heat dissipation hole connected to the heat dissipation cavity. When the mainboard is fixed to the mounting bracket, the mainboard cover is arranged on the fourth heat dissipation hole. The mainboard and the mounting bracket form a third heat dissipation gap, and the third heat dissipation gap is connected to the heat dissipation cavity through the fourth heat dissipation hole. In this way, the heat in the heat dissipation cavity can enter the third heat dissipation gap along the fourth heat dissipation hole for discharge, thereby improving the heat dissipation efficiency.

[0019] In one embodiment, the bottom wall of the heat dissipation cavity is provided with a mounting hole for mounting the shaft, and the mounting hole is connected to the heat dissipation cavity. When the shaft is mounted in the mounting hole, the heat in the heat dissipation cavity can also be discharged along the gap between the shaft and the mounting hole, thereby improving the efficiency of discharging the heat in the heat dissipation cavity.

[0020] In one of the embodiments, the mounting bracket is further provided with a fifth heat dissipation hole communicated with the heat dissipation cavity, and the fifth heat dissipation hole and the first heat dissipation hole are respectively located on two opposite side walls of the mounting bracket.

[0021] On the other hand, the present application also relates to a fan, comprising the fan structure in any of the above embodiments.

[0022] The above-mentioned fan includes the fan structure in any of the above-mentioned embodiments. Therefore, when the fan is in use, the first motor is connected through the first mounting part and the second mounting part to be assembled on the mounting bracket. At this time, the first heat dissipation hole and the second heat dissipation hole are connected. The heat generated by the first motor during operation can be discharged along the first heat dissipation hole to the second heat dissipation hole and then to the heat dissipation cavity, thereby dissipating the first motor. Compared with the traditional first motor in which the heat dissipation of the first motor is hindered during installation, the heat dissipation effect of the first motor in the present application is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings used in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0025] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.

[0026] Figure 1 is an exploded schematic diagram of a fan structure according to an embodiment;

[0027] Figure 2 is an exploded schematic diagram of a fan structure of another embodiment;

[0028] Figure 3 A partial cross-sectional view of a fan structure according to an embodiment;

[0029] Figure 4 It is a structural schematic diagram of a mounting bracket of an embodiment;

[0030] Figure 5 is an exploded schematic diagram of a fan structure of another embodiment;

[0031] Figure 6An assembly diagram of a fan structure of an embodiment from one perspective;

[0032] Figure 7 is an assembly diagram of a fan structure of another embodiment from another perspective;

[0033] Figure 8 is a schematic structural diagram of a capacitor element according to an embodiment;

[0034] Fig. 9 An assembly diagram of a fan structure of another embodiment from another perspective.

[0035] Description of reference numerals:

[0036] 10. Fan structure; 100. First motor; 110. First heat dissipation hole; 120. First mounting part; 130. First heat dissipation gap; 200. Mounting bracket; 210. Heat dissipation cavity; 212. Second heat dissipation hole; 214. Third heat dissipation hole; 216. Fourth heat dissipation hole; 218. Fifth heat dissipation hole; 220. Mounting slot; 230. Second mounting part; 240. Fourth mounting part; 250. Mounting hole; 260. Buckle; 270. Limiting plate; 280. Sixth mounting part; 300. Second motor; 310. Third mounting part; 400. Capacitor; 410. Fifth mounting part; 420. Second heat dissipation gap; 500. Mainboard; 510. Third heat dissipation gap. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention 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 present invention. However, the present invention 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 present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0038] 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 limiting the present invention.

[0039] 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 invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] A conventional floor fan generally includes a main motor, a main board and a synchronous motor. The main board and the synchronous motor generally require two brackets to support the main board and the synchronous motor. When the main board and the synchronous motor are respectively mounted on the main motor through two brackets, the heat dissipation holes on the main motor will be blocked, which is not conducive to the heat dissipation of the main motor and the stepper motor. Based on this, an embodiment proposes a fan structure 10, which has a better heat dissipation effect when in use.

[0041] Please refer to Figure 1 and Figure 2 A fan structure 10 in an embodiment includes a first motor 100 and a mounting bracket 200, wherein the first motor 100 is provided with a first heat dissipation hole 110, and the first motor 100 is also provided with a first mounting portion 120; the mounting bracket 200 is provided with a heat dissipation cavity 210 and a second heat dissipation hole 212 communicating with the heat dissipation cavity 210, and the mounting bracket 200 is provided with a second mounting portion 230 for connecting with the first mounting portion 120; when the first mounting portion 120 and the second mounting portion 230 are connected, the first heat dissipation hole 110 is communicated with the second heat dissipation hole 212.

[0042] Please refer to Figure 1 and Figure 2 When the fan structure 10 is in use, the first motor 100 is connected to the second mounting portion 120 and the second mounting portion 230 to be assembled on the mounting bracket 200. At this time, the first heat dissipation hole 110 and the second heat dissipation hole 212 are connected. The heat generated by the first motor 100 during operation can be discharged along the first heat dissipation hole 110 to the second heat dissipation hole 212 and then to the heat dissipation cavity 210, thereby dissipating the heat of the first motor 100. Compared with the traditional first motor 100 in which the heat dissipation of the first motor 100 is hindered during installation, the heat dissipation effect of the first motor 100 in the present application is better.

[0043] The connection between the first mounting portion 120 and the second mounting portion 230 can be plug-in or snap-in. Figure 2 and Figure 3In one embodiment, the first mounting portion 120 and the second mounting portion 230 are positioned and matched, so that the first motor 100 and the mounting bracket 200 are positioned and matched by the first mounting portion 120 and the second mounting portion 230; further, the first mounting portion 120 and the second mounting portion 230 are positioned and matched so that when the first motor 100 is installed on the mounting bracket 200, it can be ensured that the first heat dissipation hole 110 and the second heat dissipation hole 212 are connected.

[0044] Optionally, in one embodiment, the first mounting portion 120 is a positioning hole, and the second mounting portion 230 is a positioning protrusion; or in other embodiments, the first mounting portion 120 is a positioning protrusion, and the second mounting portion 230 is a positioning hole; in this way, the first motor 100 and the mounting bracket 200 are positioned and installed by plugging and fitting the positioning hole and the positioning protrusion.

[0045] When the first motor 100 is positioned and mounted on the mounting bracket 200 through the first mounting portion 120 and the second mounting portion 230, the mounting bracket 200 and the first motor 100 also need to be fixed by screws, thereby improving the stability of the first motor 100 installed on the mounting bracket 200.

[0046] When the first motor 100 is mounted on the mounting bracket 200, part of the heat generated by the first motor 100 can be transferred to the heat dissipation cavity 210 through the first heat dissipation hole 110 and the second heat dissipation hole 212 for heat dissipation. Figure 3 , Figure 3 The figure is a partial cross-sectional view of a fan structure of an embodiment. In order to improve the heat dissipation effect of the first motor 100, in one embodiment, a first heat dissipation gap 130 is formed between the mounting bracket 200 and the first motor 100, so that part of the heat generated by the first motor 100 during operation can also be discharged along the first heat dissipation gap 130, thereby also improving the heat dissipation efficiency of the first motor 100.

[0047] In one embodiment, see Figure 2 and Figure 4 The fan structure 10 further includes a second motor 300, which is fixed in the heat dissipation cavity 210. In this way, the first motor 100 and the second motor 300 are integrated on the mounting bracket 200. Further, the second motor is arranged in the heat dissipation cavity 210, and the second motor 300 does not block the first heat dissipation hole 110.

[0048] For details, please refer to Figure 4 and Figure 5The second motor 300 is provided with a third mounting portion 310, and the side wall of the heat dissipation cavity 210 is formed with a fourth mounting portion 240 that is positioned and matched with the third mounting portion 310. In this way, the second motor 300 is positioned and mounted with the heat dissipation cavity 210 through the positioning and matching of the third mounting portion 310 and the fourth mounting portion 240.

[0049] Optionally, in one embodiment, the third mounting portion 310 is a positioning hole, and the fourth mounting portion 240 is a positioning protrusion; or in other embodiments, the third mounting portion 310 is a positioning protrusion, and the fourth mounting portion 240 is a positioning hole; in this way, the positioning installation of the third motor and the mounting bracket 200 is achieved by plugging and fitting the positioning hole and the positioning protrusion.

[0050] When the second motor 300 is positioned and mounted in the heat dissipation cavity 210 through the third mounting portion 310 and the fourth mounting portion 240, the side wall of the heat dissipation cavity 210 and the second motor 300 also need to be fixed by screws, so that the stability of the second motor 300 installed in the heat dissipation cavity 210 is ensured.

[0051] For further information, please refer to Figure 6 , Figure 7 and Figure 8 On the basis of any of the above embodiments, the fan structure 10 further includes a capacitor 400, the capacitor 400 is provided with a fifth mounting portion 410, the mounting bracket 200 is further provided with a sixth mounting portion 280 positioned and matched with the fifth mounting portion 410, and the capacitor 400 is positioned and matched with the mounting bracket 200 through the fifth mounting portion 410 and the sixth mounting portion 280. In this way, the capacitor 400, the first motor 100 and the second motor 300 are all mounted on the mounting bracket 200, thereby avoiding the need to set up multiple support frames to respectively support the capacitor 400, the first motor 100 and the second motor 300, so that the support frames block the first heat dissipation holes, affecting the heat dissipation efficiency of the first motor.

[0052] To install the capacitor 400, please refer to Fig. 9 In one embodiment, the mounting bracket 200 is further formed with a mounting groove 220, and when the fifth mounting portion 410 and the sixth mounting portion 280 are positioned and matched, the capacitor 400 is disposed in the mounting groove 220. Further, in order to improve the efficiency of heat dissipation, a second heat dissipation gap 420 is formed between the capacitor 400 and the side wall of the mounting groove 220, and the second heat dissipation gap 420 is connected to the mounting groove 220. The mounting bracket 200 is further provided with a third heat dissipation hole 214, and the heat dissipation cavity 210 is connected to the mounting groove 220 through the third heat dissipation hole 214. In this way, after the heat generated by the first motor 100 during operation enters the heat dissipation cavity 210, it will enter the mounting groove 220 along the third heat dissipation hole 214, and finally be discharged along the second heat dissipation gap 420, thereby further improving the heat dissipation efficiency of the first motor 100.

[0053] An independently arranged heat dissipation cavity 210 and an installation groove 220 are formed inside the mounting bracket 200 . The heat dissipation cavity 210 is connected with the installation groove 220 through a third heat dissipation hole 214 . The entrance of the installation groove 220 is arranged in the circumferential direction of the mounting bracket 200 .

[0054] Based on any of the above embodiments, please refer to Figure 4 and Figure 7 The fan structure 10 further includes a main board 500, which is fixed to the mounting bracket 200. In this way, the main board 500 and the first motor 100 are both mounted on the mounting bracket 200, so as to avoid the additional bracket for mounting the main board 500, which may block the first heat dissipation hole 110 and affect the heat dissipation effect of the first motor 100.

[0055] The mainboard 500 can be mounted on the mounting bracket 200 in a variety of ways, such as by screw connection or riveting; Figure 4 and Figure 7 In one embodiment, the mainboard 500 is snap-fitted with the mounting bracket 200. Thus, the mainboard 500 and the mounting bracket 200 can be easily assembled and disassembled.

[0056] Optionally, a buckle 260 is formed on the mounting bracket 200, and the mainboard 500 is buckled on the mounting bracket 200 through the buckle 260. Figure 5 and Figure 7 The mounting bracket 200 also forms a limit plate 270. When in use, the mainboard 500 is first mounted below the limit plate 270, and then the mainboard 500 is pressed to engage with the buckle 260, thereby completing the installation of the mainboard 500. In other embodiments, a buckle is formed on the mounting bracket 200, and a hole engaging with the buckle is formed on the mainboard 500; or a hole is formed on the mounting bracket 200, and a buckle engaging with the buckle is formed on the mainboard 500. In this way, the mainboard 500 is mounted on the mounting bracket 200 through the engagement of the buckle with the hole.

[0057] For further information, please refer to Figure 4 and Figure 7 The mounting bracket 200 is provided with a fourth heat dissipation hole 216 communicating with the heat dissipation cavity 210. When the mainboard 500 is fixed to the mounting bracket 200, the mainboard 500 covers the fourth heat dissipation hole 216. Please refer to Fig. 9 A third heat dissipation gap 510 is formed between the mainboard 500 and the mounting bracket 200, and the third heat dissipation gap 510 is connected to the heat dissipation cavity 210 through the fourth heat dissipation hole 216. In this way, the heat in the heat dissipation cavity 210 can enter the third heat dissipation gap 510 along the fourth heat dissipation hole 216 for discharge, thereby improving the heat dissipation efficiency.

[0058] Please refer to Figure 4 and Figure 7 The fourth heat dissipation hole 216 is arranged on the top wall of the mounting bracket 200 , and a buckle 260 and a limiting plate 270 are arranged on the top wall of the mounting bracket 200 . The mainboard 500 is fixed on the top wall of the mounting bracket 200 through the cooperation of the buckle 260 and the limiting plate 270 .

[0059] In one embodiment, see Figure 4 The bottom wall of the heat dissipation cavity 210 is provided with a mounting hole 250 for mounting the shaft, and the mounting hole 250 is connected to the heat dissipation cavity 210. When the shaft is mounted in the mounting hole 250, the heat in the heat dissipation cavity 210 can also be discharged along the gap between the shaft and the mounting hole 250, thereby improving the efficiency of discharging the heat in the heat dissipation cavity 210. Among them, the shaft is the rotating shaft of the second motor 300, the second motor 300 can be a synchronous motor, and the first motor 100 can be a main motor.

[0060] Please refer to Figure 4 The mounting hole 250 and the fourth heat dissipation hole 216 are arranged opposite to each other and are respectively located on two opposite side walls of the mounting bracket 200 .

[0061] Please refer to Figure 4 On the basis of any of the above embodiments, the mounting bracket 200 is further provided with a fifth heat dissipation hole 218 communicating with the heat dissipation cavity 210, and the fifth heat dissipation hole 218 and the first heat dissipation hole 110 are respectively located on two opposite side walls of the mounting bracket 200. In this way, when the heat generated by the operation of the first motor 100 enters the heat dissipation cavity 210 along the first heat dissipation hole 110, it can also be discharged along the fifth heat dissipation hole 218, thereby further improving the heat dissipation effect.

[0062] Furthermore, on the basis of the above embodiment, in order to improve the heat dissipation effect, a plurality of heat dissipation holes are formed on the mounting bracket 200. The heat dissipation holes can be arranged in the circumference of the mounting bracket 200. The heat dissipation holes are all connected to the heat dissipation cavity 210. The heat in the heat dissipation cavity 210 can be discharged along each heat dissipation hole.

[0063] In addition, an embodiment also relates to a fan, comprising the fan structure 10 in any of the above embodiments.

[0064] The above-mentioned fan includes the fan structure 10 in any of the above-mentioned embodiments. Therefore, when the fan is in use, the first motor 100 is connected through the first mounting portion 120 and the second mounting portion 230 to be assembled on the mounting bracket 200. At this time, the first heat dissipation hole 110 and the second heat dissipation hole 212 are connected. The heat generated by the first motor 100 during operation can be discharged along the first heat dissipation hole 110 to the second heat dissipation hole 212 and then to the heat dissipation cavity 210, thereby dissipating the heat of the first motor 100. Compared with the traditional first motor 100 in which the heat dissipation of the first motor 100 is hindered during installation, the first motor 100 in the present application has a better heat dissipation effect.

[0065] 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.

[0066] In the present invention, 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.

[0067] 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.

[0068] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above 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.

[0069] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A fan structure, characterized in that: include: A first motor, wherein the first motor is provided with a first heat dissipation hole and a first mounting portion; A mounting bracket, wherein the mounting bracket is provided with a heat dissipation cavity and a second heat dissipation hole communicating with the heat dissipation cavity, and the mounting bracket is provided with a second mounting portion for connecting with the first mounting portion; when the first mounting portion and the second mounting portion are connected, the first heat dissipation hole is communicated with the second heat dissipation hole; and A capacitor, wherein the capacitor is provided with a fifth mounting portion, and the mounting bracket is further provided with a sixth mounting portion positioned and matched with the fifth mounting portion, and the capacitor is positioned and mounted with the mounting bracket through the positioning and matching of the fifth mounting portion and the sixth mounting portion; The mounting bracket is further formed with a mounting groove, and when the fifth mounting portion and the sixth mounting portion are positioned and matched, the capacitor is arranged in the mounting groove; The capacitor and the side wall of the mounting groove form a second heat dissipation gap, the second heat dissipation gap is communicated with the mounting groove, the mounting bracket is further provided with a third heat dissipation hole, and the heat dissipation cavity is communicated with the mounting groove through the third heat dissipation hole.

2. The fan structure according to claim 1, characterized in that: A first heat dissipation gap is formed between the mounting bracket and the first motor.

3. The fan structure according to claim 1, characterized in that: The first mounting portion and the second mounting portion are positioned and matched.

4. The fan structure according to claim 1, characterized in that: It also includes a second motor, which is fixed in the heat dissipation cavity.

5. The fan structure according to claim 4, characterized in that: The second motor is provided with a third mounting portion, and the side wall of the heat dissipation cavity is formed with a fourth mounting portion which is positioned and matched with the third mounting portion.

6. The fan structure according to claim 1, characterized in that: It also includes a mainboard, which is fixed to the mounting bracket.

7. The fan structure according to claim 6, characterized in that: The mainboard is clamped with the mounting bracket.

8. The fan structure according to claim 6, characterized in that: The mounting bracket is provided with a fourth heat dissipation hole connected to the heat dissipation cavity. When the mainboard is fixed to the mounting bracket, the mainboard cover is arranged on the fourth heat dissipation hole. The mainboard and the mounting bracket form a third heat dissipation gap. The third heat dissipation gap is connected to the heat dissipation cavity through the fourth heat dissipation hole.

9. The fan structure according to claim 1, characterized in that: The bottom wall of the heat dissipation cavity is provided with a mounting hole for mounting the shaft, and the mounting hole is communicated with the heat dissipation cavity.

10. The fan structure according to claim 1, characterized in that: The mounting bracket is further provided with a fifth heat dissipation hole communicated with the heat dissipation cavity, and the fifth heat dissipation hole and the second heat dissipation hole are respectively located on two opposite side walls of the mounting bracket.

11. A fan, characterized in that: The fan structure comprises the fan structure according to any one of claims 1 to 10.

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