New energy fan long-life aluminum shell capacitor

Abstract

The utility model relates to a new energy fan long-life aluminum shell capacitor which comprises an aluminum shell, a capacitor core body is arranged in the aluminum shell, a heat conduction layer is arranged on the outer side face of the capacitor core body, a plurality of heat dissipation blocks are arranged on the aluminum shell, a heat conduction cavity is formed between the inner wall of the aluminum shell and the outer wall of the heat conduction layer, and a heat dissipation assembly is arranged at the end, away from a ventilation opening, of the aluminum shell. The heat dissipation assembly comprises a first annular air pipe, a fan and a second annular air pipe, the second annular air pipe communicates with a plurality of second air outlet branch pipes, the first annular air pipe communicates with a plurality of first air outlet branch pipes, and the air outlet end of the fan communicates with the interiors of the second annular air pipe and the first annular air pipe through pipelines correspondingly; one end of each second air outlet branch pipe communicates with the interior of the heat conduction cavity, and one end of each first air outlet branch pipe is located outside the aluminum shell and faces the heat dissipation block. According to the invention, the capacitor can be effectively cooled according to the temperature change, and the capacitor is prevented from being damaged due to too high stability during working.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan capacitor technical field especially relates to new energy fan long life aluminum shell capacitor. BACKGROUND

[0002] The fan aluminum shell capacitor is a special type of capacitor, mainly used in the variable pitch system of new energy fan, used as a backup power supply.

[0003] In the long-term operation fan, the capacitor operation also generates more heat, the fan capacitor of prior art is through the heat dissipation shell and the heat dissipation fin connected on the capacitor shell natural heat dissipation, when the capacitor internal temperature gradually increases, it is difficult to dissipate heat to the capacitor in time and be damaged. UTILITY MODEL CONTENTS

[0004] The utility model provides new energy fan long life aluminum shell capacitor in view of the deficiency of prior art, and specific technical scheme is as follows:

[0005] New energy fan long life aluminum shell capacitor, including aluminum shell, the inside of aluminum shell is provided with capacitor core body, the outside of capacitor core body has heat conduction layer, a plurality of heat dissipation blocks are formed on the aluminum shell, the heat conduction cavity is formed between the inner wall of aluminum shell and the outer wall of heat conduction layer, the through ventilation opening is equipped on the aluminum shell, the one end of aluminum shell away from ventilation opening is provided with heat dissipation assembly, the heat dissipation assembly includes first annular air pipe, fan and second annular air pipe, a plurality of second air outlet branch pipes are communicated on the second annular air pipe, a plurality of first air outlet branch pipes are communicated on the first annular air pipe, the air outlet end of fan is connected with the inside of second annular air pipe and first annular air pipe through pipeline respectively, one end of a plurality of second air outlet branch pipes is connected with the inside of heat conduction cavity, and one end of a plurality of first air outlet branch pipes is located in the outside of aluminum shell and is towards heat dissipation block.

[0006] As the improvement of the above technical scheme: the heat dissipation block is arranged in sheet shape, a plurality of heat dissipation blocks are evenly distributed on the circumference of the aluminum shell, one side of the heat dissipation block is located in the outside of the aluminum shell, the other side of the heat dissipation block extends to the inside of the aluminum shell and is connected with the heat conduction layer, the heat conduction cavity is arranged in ring shape, a plurality of first air outlet branch pipes are distributed in ring shape on the first annular air pipe, and a plurality of second air outlet branch pipes are distributed in ring shape on the second annular air pipe respectively.

[0007] As the improvement of the above technical scheme: the blocking block is provided with a connecting plate at one end close to the heat dissipation assembly, the connecting plate is fixedly connected to the inner wall of the aluminum shell, a spring is fixedly connected between the connecting plate and the blocking block, an elastic sleeve rod is inserted into the spring, the connecting plate is fixedly connected with a connecting block at one side close to the blocking block, the connecting block is connected with an arc-shaped memory metal sheet at one side close to the blocking block, and the blocking block is provided with a limiting block at one side close to the arc-shaped memory metal sheet.

[0008] As the improvement of the above technical scheme: the blocking block is provided with a connecting plate at one end close to the heat dissipation assembly, the connecting plate is fixedly connected to the inner wall of the aluminum shell, a spring is fixedly connected between the connecting plate and the blocking block, an elastic sleeve rod is inserted into the spring, the connecting plate is fixedly connected with a connecting block at one side close to the blocking block, the connecting block is connected with an arc-shaped memory metal sheet at one side close to the blocking block, and the blocking block is provided with a limiting block at one side close to the arc-shaped memory metal sheet, and when the temperature inside the heat conduction cavity rises, the arc-shaped memory metal sheet expands and deforms to push the blocking block to move away from the heat dissipation assembly.

[0009] As the improvement of the above technical scheme: the blocking block is provided with a connecting plate at one end close to the heat dissipation assembly, the connecting plate is fixedly connected to the inner wall of the aluminum shell, a spring is fixedly connected between the connecting plate and the blocking block, an elastic sleeve rod is inserted into the spring, the connecting plate is fixedly connected with a connecting block at one side close to the blocking block, the connecting block is connected with an arc-shaped memory metal sheet at one side close to the blocking block, and the blocking block is provided with a limiting block at one side close to the arc-shaped memory metal sheet, and when the temperature inside the heat conduction cavity rises, the arc-shaped memory metal sheet expands and deforms to push the blocking block to move away from the heat dissipation assembly.

[0010] The beneficial effects of the present application are as follows:

[0011] 1. When the normal capacitor works, the heat on the capacitor core body is transmitted to the heat conduction layer, the heat conduction layer transmits the heat to the plurality of heat dissipation blocks and the aluminum shell, so that the heat is transmitted to the outside of the capacitor through the heat dissipation blocks and the aluminum shell, and the normal heat dissipation effect of the capacitor is achieved.

[0012] 2. When the temperature inside the aluminum shell gradually rises, the arc-shaped memory metal sheet gradually expands, pushes the blocking block to move towards the tactile switch, and makes one end of the blocking block gradually away from the air vent, so that the air vent is in an open state with respect to the aluminum shell, the internal heat of the aluminum shell is naturally discharged through the air vent, and the further heat dissipation effect of the aluminum shell is achieved.

[0013] 3. When the temperature inside the aluminum shell further rises, the arc-shaped memory metal sheet continues to expand, pushes the blocking block to move towards the tactile switch, and contacts the tactile switch, so as to drive the fan to run, so that the heat inside the aluminum shell is quickly discharged to the outside of the aluminum shell through the heat conduction cavity and the blocking block, and the heat inside the aluminum shell is quickly dissipated, so that the capacitor can be effectively cooled according to the temperature change, and the capacitor is prevented from being damaged due to the stable high temperature during work. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the whole structure of the present application;

[0015] Figure 2 It is Figure 1Enlarged structural schematic view at A.

[0016] Reference signs: 1, aluminum shell; 2, capacitor core; 3, first annular air pipe; 31, first air outlet branch pipe; 4, fan; 5, second annular air pipe; 51, second air outlet branch pipe; 6, heat dissipation block; 7, heat conduction layer; 8, touch switch; 9, arc-shaped memory metal sheet; 91, connecting block; 10, plugging block; 100, heat conduction cavity; 11, guide rod; 101, guide groove; 102, limiting block; 12, ventilation opening; 13, filter plate; 15, connecting plate; 16, spring; 17, telescopic sleeve rod. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0018] Embodiment

[0019] Please refer to Figures 1-2 , new energy fan long service life aluminum shell capacitor, including aluminum shell 1, the inside of aluminum shell 1 is provided with capacitor core 2, the outside of capacitor core 2 has heat conduction layer 7, specifically, heat conduction layer 7 can be heat-conducting silicone material, on the one hand, it has insulation, on the other hand, it has good thermal conductivity, it is convenient to heat conduction, one end of aluminum shell 1 can be provided with exhaust valve connected with the inside of aluminum shell 1, when the air pressure in the inside of aluminum shell 1 is too large, the gas in the inside of aluminum shell 1 can be discharged through exhaust valve, to avoid the explosion caused by the air pressure in the inside of aluminum shell 1 being too large, this is prior art this paper will not repeat, aluminum shell 1 has a plurality of heat dissipation blocks 6, the inner wall of aluminum shell 1 and the outer wall of heat conduction layer 7 form heat conduction cavity 100, aluminum shell 1 is provided with through ventilation opening 12, one end of aluminum shell 1 away from ventilation opening 12 is provided with heat dissipation assembly, heat dissipation assembly includes first annular air pipe 3, fan 4 and second annular air pipe 5, second annular air pipe 5 is connected with a plurality of second air outlet branch pipes 51, first annular air pipe 3 is connected with a plurality of first air outlet branch pipes 31, the air outlet end of fan 4 is connected with the inside of second annular air pipe 5 and first annular air pipe 3 through pipeline respectively, one end of a plurality of second air outlet branch pipes 51 is connected with the inside of heat conduction cavity 100, one end of a plurality of first air outlet branch pipes 31 is located in the outside of aluminum shell 1 and is directed to heat dissipation block 6, each first air outlet branch pipe 31 coaxially corresponds a heat dissipation block 6.

[0020] In an alternative embodiment: the heat dissipation blocks 6 are arranged in a sheet shape, and a plurality of heat dissipation blocks 6 are uniformly distributed in the circumference of the aluminum shell 1. Specifically, the heat dissipation blocks 6 are arranged along the axial direction of the aluminum shell 1, one side of the heat dissipation blocks 6 is located outside the aluminum shell 1, and the other side of the heat dissipation blocks 6 extends to the inside of the aluminum shell 1 and is connected with the heat conduction layer 7. The heat conduction cavity 100 is arranged in a ring shape, a plurality of first air outlet branch pipes 31 are arranged in a ring shape on the first ring-shaped air pipe 3, and a plurality of second air outlet branch pipes 51 are arranged in a ring shape on the second ring-shaped air pipe 5. When the fan 4 is running, air can be uniformly blown into the heat conduction cavity 100, so that the heat generated inside the aluminum shell 1 can be better distributed in the heat conduction cavity 100, and then the heat inside the aluminum shell 1 can be discharged through the ventilation opening 12. The heat absorbed by the heat dissipation blocks 6 can be uniformly dissipated, thereby effectively dissipating heat for the capacitor.

[0021] In an alternative embodiment: the side of the heat conduction cavity 100 close to the ventilation opening 12 is provided with a blocking block 10, one end of the blocking block 10 close to the heat dissipation assembly is provided with a connecting plate 15, the connecting plate 15 is fixedly connected to the inner wall of the aluminum shell 1, a spring 16 is fixedly connected between the connecting plate 15 and the blocking block 10, a telescopic sleeve rod 17 is inserted into the spring 16, and both ends of the telescopic sleeve rod 17 are fixedly connected between the blocking block 10 and the connecting plate 15. The side of the heat conduction layer 7 close to the blocking block 10 is fixedly connected with a connecting block 91, the side of the connecting block 91 close to the blocking block 10 is connected with an arc-shaped memory metal sheet 9, and the side of the blocking block 10 close to the arc-shaped memory metal sheet 9 is provided with a limiting block 102. When the temperature inside the heat conduction cavity 100 rises, the arc-shaped memory metal sheet 9 is stretched and deformed to push the blocking block 10 to move away from the heat dissipation assembly. The arc-shaped memory metal sheet 9 is made of poor heat-conducting plastic or metal material to avoid affecting the arc-shaped memory metal sheet 9. In the normal state, the spring 16 will pull the blocking block 10 to block the ventilation opening 12 by the elastic force.

[0022] In an alternative embodiment: the end of the blocking block 10 away from the connecting plate 15 has a guide rod 11, the inner wall of the aluminum shell 1 close to the blocking block 10 is provided with a guide groove 101 and a light touch switch 8, and one end of the guide rod 11 is slidingly connected in the guide groove 101. The guide rod 11 and the guide groove 101 cooperate to guide and limit the blocking block 10, so that the blocking block 10 can stably move. The light touch switch 8 is installed on the inner wall of the aluminum shell 1 and is electrically connected with the fan 4. When the blocking block 10 moves towards the light touch switch 8, the fan 4 is started through the light touch switch 8, so that the fan 4 operates.

[0023] In an alternative embodiment: the ventilation opening 12 is fixedly connected with a filter plate 13, so as to prevent foreign matter from entering the ventilation opening 12.

[0024] Specifically, the normal capacitor in operation, the heat on the capacitor core 2 will be transmitted to the heat transfer layer 7, the heat transfer layer 7 will be transmitted to the plurality of heat dissipation block 6 and aluminum shell 1, so that the heat through the heat dissipation block 6 and aluminum shell 1 to the capacitor outside, the heat dissipation effect of the capacitor, when the temperature inside the aluminum shell 1 gradually increases, the arc memory metal sheet 9 will gradually stretch, push the blocking block 10 to the direction of the light touch switch 8, so that the end of the blocking block 10 gradually away from the air vent 12, so that the air vent 12 on the aluminum shell 1 in the open state, through the air vent 12 will be the internal heat of the aluminum shell 1 natural discharge, further heat dissipation effect on the aluminum shell 1 inside, when the temperature inside the aluminum shell 1 further increases, the arc memory metal sheet 9 will continue to stretch, so that the arc memory metal sheet 9 continue to push the blocking block 10 to the direction of the light touch switch 8, to contact the light touch switch 8, thereby driving the fan 4 to run, so that the heat inside the aluminum shell 1 through the heat transfer cavity 100 and the blocking block 10 quickly discharged to the outside of the aluminum shell 1, so that the aluminum shell 1 inside the rapid heat dissipation, thereby the application can be according to the temperature change can effectively dissipate heat of the capacitor, avoid the capacitor when working stable too high and damaged.

[0025] The above only for the preferred embodiment of the present application, and not to limit the present application, any modification, equivalent replacement and improvement within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. A long-life aluminum shell capacitor for new energy wind turbines, comprising an aluminum shell (1), the inside of the aluminum shell (1) is provided with a capacitor core (2), the outer side of the capacitor core (2) is provided with a heat conduction layer (7), and the aluminum shell (1) is provided with a plurality of heat dissipation blocks (6), characterized in that, The heat conduction cavity (100) is formed between the inner wall of the aluminum shell (1) and the outer wall of the heat conduction layer (7), the aluminum shell (1) is provided with a ventilation opening (12) penetrating the external environment, the aluminum shell (1) is provided with a heat dissipation assembly at one end away from the ventilation opening (12), the heat dissipation assembly comprises a first annular air pipe (3), a fan (4) and a second annular air pipe (5), the second annular air pipe (5) is communicated with a plurality of second air outlet branch pipes (51), the first annular air pipe (3) is communicated with a plurality of first air outlet branch pipes (31), the outlet end of the fan (4) is communicated with the inside of the second annular air pipe (5) and the first annular air pipe (3) through pipes, one end of the plurality of second air outlet branch pipes (51) is communicated with the inside of the heat conduction cavity (100), and one end of the plurality of first air outlet branch pipes (31) is located outside the aluminum shell (1).

2. The new energy fan long life aluminum shell capacitor according to claim 1, characterized in that: The heat dissipation block (6) is in a sheet shape, a plurality of the heat dissipation blocks (6) are uniformly distributed in the circumferential direction of the aluminum shell (1), one side of the heat dissipation block (6) is located outside the aluminum shell (1), the other side of the heat dissipation block (6) extends to the inside of the aluminum shell (1) and is connected with the heat conduction layer (7), the heat conduction cavity (100) is annular, a plurality of the first air outlet branch pipes (31) are annularly distributed on the first annular air pipe (3), and a plurality of the second air outlet branch pipes (51) are annularly distributed on the second annular air pipe (5). 3.The new energy fan long-life aluminum shell capacitor of claim 2, wherein: The heat conduction cavity (100) is provided with a blocking block (10) on one side close to the ventilation opening (12), one end of the blocking block (10) close to the heat dissipation assembly is provided with a connecting plate (15), the connecting plate (15) is fixedly connected to the inner wall of the aluminum shell (1), a spring (16) is fixedly connected between the connecting plate (15) and the blocking block (10), a telescopic sleeve rod (17) is inserted into the inside of the spring (16), a connecting block (91) is fixedly connected to one side of the heat conduction layer (7) close to the blocking block (10), an arc-shaped memory metal sheet (9) is connected to one side of the connecting block (91) close to the blocking block (10), and the blocking block (10) is provided with a limiting block (102) on one side close to the arc-shaped memory metal sheet (9); when the temperature inside the heat conduction cavity (100) rises, the arc-shaped memory metal sheet (9) is stretched and deformed to push the blocking block (10) to move away from the heat dissipation assembly.

4. The new energy fan long service life aluminum shell capacitor according to claim 3, characterized in that: One end of the blocking block (10) away from the connecting plate (15) is provided with a guide rod (11), the inner wall of the aluminum shell (1) is provided with a guide groove (101) and a touch switch (8) on one side close to the blocking block (10), one end of the guide rod (11) is slidably connected to the guide groove (101), and the touch switch (8) is mounted on the inner wall of the aluminum shell (1) and is electrically connected with the fan (4).

5. The new energy fan long service life aluminum shell capacitor according to claim 4, characterized in that: The filter plate (13) is fixedly connected in the ventilation opening (12).

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