Variable frequency driving assembly of variable frequency control cabinet

Abstract

The utility model discloses a frequency conversion driving assembly of a frequency conversion control cabinet, and relates to the technical field of control cabinets. The variable-frequency driving assembly comprises a bottom plate and a variable-frequency control cabinet body, the bottom plate is arranged on the inner wall of the variable-frequency control cabinet body, the middle of the top surface of the bottom plate is fixedly connected with a heat-conducting fin, the top surface of the heat-conducting fin is fixedly connected with a variable-frequency driving assembly body, and the top surface of the bottom plate is fixedly connected with a plurality of cooling fins around the heat-conducting fin. A plurality of mounting grooves are formed in the top surface of the bottom plate, heat pipes are arranged on the inner walls of the mounting grooves, one sides of the pipe walls of the heat pipes make contact with the bottom surfaces of the cooling fins, and the other sides of the pipe walls of the heat pipes make contact with the corresponding cooling fins. In the using process, under the combined action of air circulation heat absorption, direct heat absorption of the heat conducting fins and reverse refrigeration of circulating air through the heat pipes, the heat dissipation performance of the variable frequency driving assembly body is better.

Description

Technical Field

[0001] The utility model relates to the technical field of control cabinets, in particular to a variable frequency drive component of a variable frequency control cabinet. Background Art

[0002] The variable frequency drive assembly is the core component of the variable frequency control cabinet. The variable frequency drive assembly is an electronic controller designed to change the frequency and voltage supplied to the AC motor to meet the speed and torque requirements. In order to control the speed of the motor, the inverter controls the frequency of the electric energy supplied to it. The frequency is directly related to the speed of the motor. The faster the frequency, the faster the motor speed.

[0003] Based on the importance of the variable frequency drive component to the variable frequency control cabinet, it is necessary to ensure the normal operation of the variable frequency drive component. The heat dissipation performance of the variable frequency drive component is closely related to its performance and service life. A certain amount of heat will be generated during its operation. If the heat dissipation performance is not good, it may cause the variable frequency drive component to overheat, causing failure or damage. To this end, we propose a variable frequency drive component for the variable frequency control cabinet. Utility Model Content

[0004] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0005] A variable frequency drive component of a variable frequency control cabinet comprises a bottom plate and a variable frequency control cabinet body, the bottom plate is arranged on the inner wall of the variable frequency control cabinet body, a heat conducting sheet is fixedly connected to the middle of the top surface of the bottom plate, the top surface of the heat conducting sheet is fixedly connected to a variable frequency drive component body, the top surface of the bottom plate is located around the heat conducting sheet and fixedly connected to a plurality of heat sinks, a plurality of mounting grooves are arranged on the top surface of the bottom plate, a plurality of inner walls of the mounting grooves are all arranged with heat pipes, one side of the plurality of heat pipe walls are in contact with the bottom surface of the heat sink, and the other side of the plurality of heat pipe walls are respectively in contact with the corresponding heat sinks. The heat sinks are in contact with each other, and the top surfaces of the plurality of heat sinks are commonly fixedly connected to a first top plate, and the left side of the first top plate is fixedly connected to a second top plate by bolts, and the first top plate and the second top plate have fixing grooves on opposite sides, and vents are provided on opposite sides of the two fixing grooves, and exhaust fans are commonly provided on the inner walls of the two fixing grooves. During the use of the variable frequency drive component, the heat dissipation performance of the variable frequency drive component body is better due to the combined effect of heat absorption by air circulation and direct heat absorption by the heat conductive sheet and cooling of the air circulated in the reverse direction through the heat pipe.

[0006] Furthermore, the material of the heat conducting sheet is thermally conductive silicone grease.

[0007] Furthermore, the material of the plurality of heat sinks is copper.

[0008] Furthermore, the inner walls of the two fixing grooves are fixedly connected with shock-absorbing rings, the inner walls of the two shock-absorbing rings are in contact with the surface of the exhaust fan, and the material of the two shock-absorbing rings is natural rubber.

[0009] Furthermore, a clamping ring is fixedly connected to the middle of the bottom surface of the base plate, and a clamping block is fixedly connected to one side of the inner wall of the frequency conversion control cabinet.

[0010] Furthermore, the inner wall of the clamping ring matches the surface of the clamping block.

[0011] Furthermore, mounting holes are provided around the top surface of the bottom plate.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. During the use of this variable frequency drive component, the exhaust fan is in operation, and the external air is introduced into the space between the bottom plate and the top plate through the exhaust fan, and the variable frequency drive component body is cooled and then discharged. In this process, the heat conductive sheet absorbs the heat of the variable frequency drive component body and transfers the heat to the heat pipe, so that the end of the heat pipe in contact with the heat sink is cooled, and the heat sink absorbs the heat of the heat pipe. When the external air contacts the heat sink, it takes away the heat on the heat sink and blows toward the variable frequency drive component body to dissipate heat. Therefore, under the combined effect of air circulation absorbing heat and the heat conductive sheet directly absorbing heat and cooling the air circulated in the reverse direction through the heat pipe, the heat dissipation performance of the variable frequency drive component body is better.

[0014] 2. The heat conducting sheet and the heat sink have good thermal conductivity, which enhances the heat dissipation effect of the variable frequency drive component. The shock absorbing ring can protect the exhaust fan to prevent abnormal noise or vibration during the working time of the exhaust fan from affecting the normal use of the exhaust fan.

[0015] 3. The installation position of the frequency conversion drive component body is positioned by the clamping ring and the clamping block, so as to facilitate its fixed installation. After the installation position of the frequency conversion drive component body is positioned, the mounting hole can be fixed to the frequency conversion control cabinet by screws, so that the frequency conversion drive component body is more stable during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front cross-sectional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model in a top view;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the shock-absorbing ring of the utility model;

[0019] Figure 4It is a three-dimensional structural schematic diagram of the heat sink of the utility model;

[0020] Figure 5 The utility model Figure 4 A schematic diagram of the enlarged structure of part A;

[0021] Figure numerals: 1, bottom plate; 2, heat conducting sheet; 3, frequency conversion drive assembly body; 4, heat sink; 5, mounting groove; 6, heat pipe; 7, first top plate; 8, bolt; 9, second top plate; 10, fixing groove; 11, vent; 12, exhaust fan; 13, shock absorbing ring; 14, clamping ring; 15, frequency conversion control cabinet; 16, clamping block; 17, mounting hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0023] The device's "front, back, left, right" viewing angles are Figure 1 The directions in the attached drawings are taken as reference.

[0024] like Figure 1-5As shown, a frequency conversion drive component of a frequency conversion control cabinet comprises a bottom plate 1 and a frequency conversion control cabinet body 15, the bottom plate 1 is arranged on the inner wall of the frequency conversion control cabinet body 15, a heat conducting sheet 2 is fixedly connected to the middle of the top surface of the bottom plate 1, a frequency conversion drive component body 3 is fixedly connected to the top surface of the heat conducting sheet 2, a plurality of heat sinks 4 are fixedly connected to the top surface of the bottom plate 1 around the heat conducting sheet 2, the heat sinks 4 are evenly distributed and form a circle, so that the opening of one end between the two heat sinks 4 close to the frequency conversion drive component body 3 is small, and the opening of the other end away from the frequency conversion drive component body 3 is large, so that the outside air can enter easily and the ventilation performance is improved. The top surface of 1 is provided with a plurality of mounting grooves 5, and the inner walls of the plurality of mounting grooves 5 are all provided with heat pipes 6. The heat pipe 6 is a heat transfer element with high thermal conductivity, and its heat transfer efficiency is much higher than that of metal materials. The working principle of the heat pipe 6 is to utilize the liquid to evaporate into gas when heated, and release heat at the condensation end, and transfer heat through continuous circulation. The heat pipe 6 has the characteristics of high efficiency heat conduction, excellent thermal stability, reliability and compact structure, and is widely used in electronic equipment, instrumentation, aerospace and other fields. One side of the wall of the plurality of heat pipes 6 is in contact with the bottom surface of the heat sink 4, and the other side of the wall of the plurality of heat pipes 6 is respectively in contact with the bottom surface of the heat sink 4. The corresponding heat sinks 4 are in contact with each other, and the top surfaces of the plurality of heat sinks 4 are fixedly connected with a first top plate 7. The left side of the first top plate 7 is fixedly connected with a second top plate 9 by bolts 8. The bolts 8 facilitate the installation and removal of the exhaust fan 12. The first top plate 7 and the second top plate 9 are provided with fixing grooves 10 on the opposite sides thereof, and vents 11 are provided on the opposite sides of the two fixing grooves 10. The inner walls of the two fixing grooves 10 are provided with exhaust fans 12. During the use of the variable frequency drive assembly, the exhaust fans 12 are in operation, and the external air is introduced into the bottom plate 1 through the gaps between the heat sinks 4 by the exhaust fans 12. Between the top plate, the variable frequency drive component body 3 is cooled and then discharged. In this process, the heat conductive sheet 2 absorbs the heat of the variable frequency drive component body 3 and transfers the heat to the heat pipe 6, so that the end of the heat pipe 6 that contacts the heat sink 4 is cooled, and the heat sink 4 absorbs the heat of the heat pipe. When the external air contacts the heat sink 4, it will take away the heat on the heat sink 4 and blow toward the variable frequency drive component body 3 to dissipate heat. Therefore, under the combined effect of air circulation absorption of heat and the direct absorption of heat by the heat conductive sheet 2 and cooling of the air circulated in the reverse direction through the heat pipe 6, the heat dissipation performance of the variable frequency drive component body 3 is better.

[0025] like Figure 1-5As shown, in some embodiments, the material of the heat conductive sheet 2 is thermal grease, the material of the plurality of heat sinks 4 is copper, the inner walls of the two fixing grooves 10 are fixedly connected with shock absorbing rings 13, the inner walls of the two shock absorbing rings 13 are in contact with the surface of the exhaust fan 12, and the material of the two shock absorbing rings 13 is natural rubber, which has good vibration reduction performance. Natural rubber has good fatigue resistance, low heat generation, and small creep, and has good adhesion to metal parts. Therefore, it is widely used in shock absorbing rubber, the heat conductive sheet 2 and the heat sink have good thermal conductivity, which enhances the heat dissipation effect of the variable frequency drive component body 3, and the shock absorbing ring 13 can protect the exhaust fan 12 to prevent the exhaust fan 12 from generating abnormal noise or vibration during the working time, which affects the normal use of the exhaust fan 12.

[0026] like Figure 1-4 As shown, in some embodiments, a clamping ring 14 is fixedly connected to the middle of the bottom surface of the base plate 1, and a clamping block 16 is fixedly connected to one side of the inner wall of the frequency conversion control cabinet 15. The inner wall of the clamping ring 14 matches the surface of the clamping block 16. Mounting holes 17 are opened around the top surface of the base plate 1. The mounting position of the frequency conversion drive component body 3 is positioned by the clamping ring 14 and the clamping block 16, so as to facilitate its fixed installation. After the mounting hole 17 positions the mounting position of the frequency conversion drive component body 3, it can be fixed to the frequency conversion control cabinet 15 by screws, so that the frequency conversion drive component body 3 is more stable during use.

[0027] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A variable frequency drive assembly of a variable frequency control cabinet, comprising a base plate (1) and a variable frequency control cabinet body (15), characterized in that: The bottom plate (1) is arranged on the inner wall of the variable frequency control cabinet (15); a heat conducting sheet (2) is fixedly connected to the middle of the top surface of the bottom plate (1); a variable frequency drive component body (3) is fixedly connected to the top surface of the heat conducting sheet (2); a plurality of heat sinks (4) are fixedly connected to the top surface of the bottom plate (1) around the heat conducting sheet (2); a plurality of mounting grooves (5) are provided on the top surface of the bottom plate (1); a plurality of heat pipes (6) are provided on the inner walls of the plurality of mounting grooves (5); one side of the wall of the plurality of heat pipes (6) is connected to the bottom surface of the heat sink (4). The other sides of the walls of the plurality of heat pipes (6) are in contact with the corresponding heat sinks (4), the top surfaces of the plurality of heat sinks (4) are commonly fixedly connected to a first top plate (7), the left side of the first top plate (7) is fixedly connected to a second top plate (9) by bolts (8), the first top plate (7) and the second top plate (9) are each provided with a fixing groove (10) on the opposite side thereof, the two fixing grooves (10) are each provided with a ventilating opening (11) on the opposite side thereof, and the inner walls of the two fixing grooves (10) are commonly provided with an exhaust fan (12).

2. The variable frequency drive assembly of the variable frequency control cabinet according to claim 1, characterized in that: The material of the heat conducting sheet (2) is heat conducting silicone grease.

3. The variable frequency drive assembly of a variable frequency control cabinet according to claim 1, characterized in that: The material of the plurality of heat sinks (4) is copper.

4. The variable frequency drive assembly of a variable frequency control cabinet according to claim 1, characterized in that: The inner walls of the two fixing grooves (10) are fixedly connected with a shock absorbing ring (13), the inner walls of the two shock absorbing rings (13) are in contact with the surface of the exhaust fan (12), and the material of the two shock absorbing rings (13) is natural rubber.

5. The variable frequency drive assembly of a variable frequency control cabinet according to claim 1, characterized in that: A clamping ring (14) is fixedly connected to the middle of the bottom surface of the base plate (1), and a clamping block (16) is fixedly connected to one side of the inner wall of the frequency conversion control cabinet (15).

6. The variable frequency drive assembly of the variable frequency control cabinet according to claim 5, characterized in that: The inner wall of the clamping ring (14) matches the surface of the clamping block (16).

7. The variable frequency drive assembly of a variable frequency control cabinet according to claim 1, characterized in that: The top surface of the bottom plate (1) is provided with mounting holes (17) on all four sides.

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