High-efficiency frequency converter heat dissipation device

Abstract

The utility model provides a high-efficiency frequency converter heat radiation device applied to the frequency converter heat radiation field, comprising a heat radiation seat arranged on a frequency converter, the heat radiation seat is of a U-shaped aluminum structure, the heat radiation seat is fixedly connected with the outer wall of a shell of the frequency converter, one side of the heat radiation seat far away from the frequency converter is provided with a plurality of heat radiation fin plates, and the heat radiation fin plates are arranged at equal intervals. Heat dissipation fans are arranged at the bottoms of the multiple heat dissipation fin plates, thermal expansion bags are clamped between the bottoms of the multiple heat dissipation fin plates, liquid storage bags are further clamped between the heat dissipation base and the bottoms of the adjacent heat dissipation fin plates, the output ends of the liquid storage bags communicate with guide pipes, liquid bins are arranged in the heat dissipation fin plates, and the output ends of the guide pipes communicate with flow dividing pipes. According to the heat dissipation device, autonomous intervention heat dissipation is carried out in cooperation with cooling liquid, external circulation driving is not needed, the structure is simple, and the heat dissipation efficiency is high.

Description

Technical Field

[0001] The present application relates to the field of inverter heat dissipation, and in particular to a high-efficiency inverter heat dissipation device. Background Art

[0002] The inverter is a power control device that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply. It is the core component of the variable frequency speed regulation system. With the increasing degree of industrial automation, inverters are increasingly widely used in industrial control and daily life. Since the core circuit module of the inverter has the characteristics of high integration, high frequency, high voltage, and high speed, it generates severe heat when working.

[0003] At present, most existing heat dissipation technologies use a method where a metal heat sink is directly attached to the circuit board and air cooling is used for heat dissipation, which has a slow heat dissipation speed and poor effect. Utility Model Content

[0004] The purpose of the present application is to solve the technical problem of low heat dissipation efficiency of the existing inverter heat dissipation device, and compared with the existing technology, a high-efficiency inverter heat dissipation device is provided, including a heat sink arranged in the inverter, the heat sink is a U-shaped aluminum structure, the heat sink is fixedly connected to the outer wall of the inverter shell, a plurality of heat sinks are arranged on the side of the heat sink away from the inverter, the plurality of heat sinks are equidistantly arranged, a heat dissipation fan is arranged at the bottom of the plurality of heat sinks, a thermal expansion bag is clamped between the bottoms of the plurality of heat sinks, a liquid storage bag is further clamped between the heat sink and the bottom of the adjacent heat sink, the output end of the liquid storage bag is connected to a guide tube, a liquid tank is arranged in the heat sink, the output end of the guide tube is connected to a shunt pipe, the output end of the shunt pipe extends to the top of the liquid tank, and the bottom of the liquid tank is connected to the bottom of the liquid storage bag.

[0005] Furthermore, the liquid storage bag is filled with cooling liquid, and a one-way valve is provided at the connection node between the liquid tank and the liquid storage bag. The one-way valve has a unidirectional conductivity that allows the cooling liquid in the liquid tank to flow into the liquid storage bag in one direction.

[0006] Furthermore, the thermal expansion bag is filled with a gas with a high thermal expansion coefficient, and the gas is carbon dioxide gas.

[0007] Furthermore, the heat dissipating fin plate is provided with a corrugated surface on the outer side wall of the liquid bin, and the corrugated surface is a copper structure.

[0008] Furthermore, the middle part of the heat dissipation fin plate rotates with the heat dissipation seat through the rotating shaft, and the heat dissipation fin plate and the heat dissipation seat are connected by a flexible thermal conductive silicone.

[0009] Compared with the prior art, the advantages of this application are:

[0010] The utility model realizes the mutual cooperation between the heat dissipation fan and the heat dissipation fins and the heat dissipation seat. Under normal heat dissipation conditions, the temperature of the inverter during operation is exported by the heat dissipation fins and the heat dissipation seat, and the air circulation is carried out in cooperation with the heat dissipation fan to achieve the purpose of normal heat dissipation. When the inverter is running at high power, the temperature generated is relatively high, which causes the gas in the thermal expansion bag to expand due to the heat, thereby generating an expulsion force, thereby causing the bottoms of the heat dissipation fins to move away and flip over. On the one hand, the liquid storage bag is squeezed so that the coolant in the liquid storage bag enters each liquid bin through the guide pipe and the diversion pipe, and the heat on the heat dissipation fins is quickly reduced by the thermal interaction of the coolant. On the other hand, since the bottoms of the heat dissipation fins are far away from each other and expand outwards, the tops of the heat dissipation fins are close together, thereby making the angle at which the wind output by the heat dissipation fan enters the heat dissipation fins larger, and the flow rate discharged from the heat dissipation fins is also correspondingly increased, further improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the front structure of this application;

[0012] Figure 2 This is a schematic diagram of the back structure of this application;

[0013] Figure 3 This is a schematic diagram of the structure of the heat sink and its components proposed in this application;

[0014] Figure 4 This is a schematic diagram of the exploded structure of the heat sink and its components proposed in this application;

[0015] Figure 5 It is a schematic diagram of the structure of the heat dissipation fin plate proposed in this application;

[0016] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of the middle part A;

[0017] Figure 7 This is a schematic diagram of the state of the thermal expansion bladder proposed in this application when it is expanded.

[0018] Description of the numbers in the figure:

[0019] Frequency converter 1, heat sink 2, heat dissipation fan 3, heat dissipation fin plate 4, corrugated surface 41, liquid bin 42, liquid storage bag 5, guide pipe 6, shunt pipe 7, thermal expansion bag 8, one-way valve 9. DETAILED DESCRIPTION

[0020] The embodiments will be combined with the drawings in the specification to provide a clear and complete description of the technical solution of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the present application.

[0021] Embodiment 1:

[0022] The utility model provides a high-efficiency inverter heat dissipation device, please refer to Figure 1-7 , including a heat sink 2 arranged on the inverter 1, the heat sink 2 is a U-shaped aluminum structure, the heat sink 2 is fixedly connected to the outer wall of the shell of the inverter 1, and a plurality of heat sink fins 4 are arranged on the side of the heat sink 2 away from the inverter 1, and the plurality of heat sink fins 4 are arranged equidistantly, and a heat sink fan 3 is arranged at the bottom of the plurality of heat sink fins 4. In order to realize the deflectability of the heat sink fins 4 relative to the heat sink 2, the middle part of the heat sink fins 4 rotates with the heat sink 2 through a rotating shaft. In order to ensure the thermal conductivity between the heat sink fins 4 and the heat sink 2, the heat sink fins 4 and the heat sink 2 are connected by flexible thermal conductive silicone.

[0023] A thermal expansion bag 8 is sandwiched between the bottoms of several heat dissipation fins 4, and the thermal expansion bag 8 is filled with a gas with a high thermal expansion coefficient, and the gas is carbon dioxide gas. A liquid storage bag 5 is also sandwiched between the heat dissipation seat 2 and the bottom of the adjacent heat dissipation fin 4, and the output end of the liquid storage bag 5 is connected with a guide tube 6. A liquid tank 42 is provided in the heat dissipation fin 4, and the heat dissipation fin 4 is provided with a corrugated surface 41 on the outer side wall of the liquid tank 42, and the corrugated surface 41 is a copper structure. The output end of the guide tube 6 is connected with a shunt pipe 7, and the output end of the shunt pipe 7 extends to the top of the liquid tank 42. The bottom of the liquid tank 42 is connected to the bottom of the liquid storage bag 5, and the liquid storage bag 5 is filled with cooling liquid. A one-way valve 9 is provided at the connection node between the liquid tank 42 and the liquid storage bag 5, and the one-way valve 9 has a unidirectional conductivity that allows the cooling liquid in the liquid tank 42 to flow into the liquid storage bag 5 in one direction.

[0024] The utility model realizes the mutual cooperation between the heat dissipation fan 3 and the heat dissipation fins 4 and the heat dissipation seat 2, under normal heat dissipation conditions, the heat dissipation fins 4 and the heat dissipation seat 2 are used to guide the temperature of the inverter 1 during operation, and the heat dissipation fan 3 is used for air circulation to achieve the purpose of normal heat dissipation. When the inverter 1 is running at high power, the temperature generated is relatively large, which makes the gas in the thermal expansion bag 8 expand due to the heat, and generates an expulsion force, thereby causing the bottoms of the heat dissipation fins 4 to turn away from each other. On the one hand, the liquid storage bag 5 is squeezed, so that the coolant in the liquid storage bag 5 enters each liquid bin 42 through the guide pipe 6 and the diversion pipe 7, and the heat on the heat dissipation fins 4 is quickly reduced by the thermal interaction of the coolant. On the other hand, since the bottoms of the heat dissipation fins 4 are far away from each other and expand outward, the tops of the heat dissipation fins 4 are close together, thereby making the wind output by the heat dissipation fan 3 enter the heat dissipation fins 4 at a larger angle, and the flow rate discharged from the heat dissipation fins 4 is also correspondingly increased, further improving the heat dissipation efficiency, cooperating with the coolant for autonomous intervention heat dissipation, without the need for external circulation drive, simple structure, and high heat dissipation efficiency.

[0025] The above is only the best implementation method adopted by this application in combination with current actual needs, but the protection scope of this application is not limited to this.

Claims

1. A high-efficiency inverter heat dissipation device, comprising a heat sink (2) arranged on an inverter (1), characterized in that: The heat sink (2) is a U-shaped aluminum structure. The heat sink (2) is fixedly connected to the outer wall of the shell of the inverter (1). A plurality of heat sink fins (4) are provided on the side of the heat sink (2) away from the inverter (1). The plurality of heat sink fins (4) are arranged at equal distances. A heat dissipation fan (3) is provided at the bottom of the plurality of heat sink fins (4). A thermal expansion bag (8) is clamped between the bottoms of the plurality of heat sink fins (4). A liquid storage bag (5) is also clamped between the heat sink (2) and the bottom of the adjacent heat sink fins (4). The output end of the liquid storage bag (5) is connected to a guide pipe (6). A liquid tank (42) is provided in the heat sink fins (4). The output end of the guide pipe (6) is connected to a shunt pipe (7). The output end of the shunt pipe (7) extends to the top of the liquid tank (42). The bottom of the liquid tank (42) is connected to the bottom of the liquid storage bag (5).

2. A high-efficiency inverter heat dissipation device according to claim 1, characterized in that: The liquid storage bag (5) is filled with cooling liquid, and a one-way valve (9) is provided at the connection node between the liquid tank (42) and the liquid storage bag (5), wherein the one-way valve (9) has a unidirectional conductivity that allows the cooling liquid in the liquid tank (42) to flow into the liquid storage bag (5) in one direction.

3. A high-efficiency inverter heat sink according to claim 1, characterized in that: The thermal expansion bag (8) is filled with a gas with a high thermal expansion coefficient, and the gas is carbon dioxide gas.

4. The high-efficiency inverter heat dissipation device according to claim 1, characterized in that: The heat dissipation fin plate (4) is provided with a corrugated surface (41) on the outer side wall of the liquid bin (42), and the corrugated surface (41) is a copper structure.

5. The high-efficiency inverter heat dissipation device according to claim 1, characterized in that: The middle part of the heat dissipation fin plate (4) rotates with the heat dissipation seat (2) via a rotating shaft, and the heat dissipation fin plate (4) and the heat dissipation seat (2) are connected via a flexible heat-conducting silica gel.

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