Heat dissipation device of high-voltage frequency converter

Abstract

The utility model discloses a high-voltage frequency converter heat radiation device which comprises an existing frequency converter, one side of the existing frequency converter is provided with a heat radiation port, the heat radiation port of the frequency converter is communicated with a square pipeline in a relatively sealed mode, the square pipeline is internally provided with a heat radiation fan, and the heat radiation fan is connected with an external power supply. The middle of the square pipeline penetrates through a hole reserved in the wall of a high-voltage frequency converter chamber, the end of the square pipeline is communicated with a necking pipeline in a sealed mode, and the necking pipeline is communicated with a first outlet pipeline and a second outlet pipeline in a sealed mode. Therefore, the internal air in the necking pipeline is accelerated to form high-flow-speed air, and the side pipeline is low-flow-speed air, so that the air in the frequency converter is guided into the side pipeline, the air flow speed in the frequency converter is accelerated, and heat dissipation is accelerated.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-voltage inverter heat dissipation, and particularly relates to a high-voltage inverter heat dissipation device. Background Art

[0002] When a high-voltage inverter is working normally, it generates a large amount of heat, which causes the temperature in the inverter room to rise. An excessively high room temperature will lead to an increase in the failure rate of the inverter and a reduction in its service life. Especially in summer or when the inverter generates a high amount of heat, not only does the cooling effect become worse, but the energy consumption also increases.

[0003] The present invention is a high-voltage inverter heat dissipation device, which is a structural transformation of the inverter room to improve the heat dissipation capacity of the inverter room. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problem that when an existing high-voltage inverter is working normally, it generates a large amount of heat, which causes the temperature in the inverter room to rise. An excessively high room temperature will lead to an increase in the failure rate of the inverter and a reduction in its service life. Especially in summer or when the inverter generates a high amount of heat, not only does the cooling effect become worse, but the energy consumption also increases.

[0005] Therefore, according to the above problems, the utility model provides a high-voltage inverter heat dissipation device, which includes an existing inverter. There is a heat dissipation port on one side of the existing inverter itself. The heat dissipation port of the inverter is hermetically connected to a square pipe. A heat dissipation fan is arranged inside the square pipe. The heat dissipation fan is connected to an external power supply. The middle of the square pipe passes through a hole reserved in the wall of the high-voltage inverter room. The end of the square pipe is hermetically connected to a reduced-diameter pipe. The reduced-diameter pipe is hermetically connected to an outlet pipe 1 and an outlet pipe 2. The outlet pipe 2 is arranged to incline downward.

[0006] Preferably: A plurality of side pipes are connected to the side of the outlet pipe 2. The side pipes are connected to the inside of the inverter. Filters are arranged at the ends of the outlet pipe 1 and the outlet pipe 2.

[0007] Preferably: The square pipe, the reduced-diameter pipe, the outlet pipe 1 and the outlet pipe 2 are all made of thin aluminum plates.

[0008] Beneficial Effects: When the inverter is in use, the heat dissipation port of the inverter itself will discharge hot air. Then, the heat dissipation fan in the square pipe is started. The heat dissipation fan will direct the heat to the reduced-diameter pipe. Since the diameter of the reduced-diameter pipe is smaller than that of the square pipe, the internal air in the reduced-diameter pipe will be accelerated to form high-velocity air, while the side pipes are for low-velocity gas. Thus, it trends the gas inside the inverter to be guided into the side pipes and discharged together with the outlet pipe 2, further accelerating the air flow velocity inside the inverter and accelerating heat dissipation. Description of the Drawings

[0009] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0010] Figure 2 Partial sectional view schematic diagram of the overall structure of the present utility model;

[0011] Figures 1 to 2 The reference numerals are respectively: frequency converter 1, square duct 2, heat dissipation fan 3, reduced-diameter duct 201, first outlet duct 202, second outlet duct 203, side duct 4, filter screen 5. Specific implementation manners

[0012] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0013] Referring to Figures 1 to 2 , a heat dissipation device for a high-voltage frequency converter, including an existing frequency converter 1. There is a heat dissipation port on one side of the existing frequency converter 1 itself. The heat dissipation port of the frequency converter 1 is hermetically connected to a square duct 2. A heat dissipation fan 3 is arranged inside the square duct 2. The heat dissipation fan 3 is connected to an external power supply. The middle part of the square duct 2 passes through a hole reserved in the wall of the high-voltage frequency converter room. The end of the square duct 2 is hermetically connected to a reduced-diameter duct 201. The reduced-diameter duct 201 is hermetically connected to a first outlet duct 202 and a second outlet duct 203. The second outlet duct 203 is arranged to be inclined downward. A plurality of side ducts 4 are connected to the side of the second outlet duct 203. The side ducts 4 are connected to the inside of the frequency converter 1. Then, the heat dissipation fan 3 in the square duct 2 is started. The heat dissipation fan 3 will direct the heat to the reduced-diameter duct 201. Since the diameter of the reduced-diameter duct 201 is smaller than that of the square duct 2, the internal air in the reduced-diameter duct 201 will be accelerated to form high-velocity air. These high-velocity air will pass through the first outlet duct 202 and the second outlet duct 203. At the same time, the second outlet duct 203 is connected to the inside of the frequency converter 1 through the side ducts 4. The second outlet duct 203 is high-velocity gas, and the side ducts 4 connected to the inside of the frequency converter 1 are low-velocity gas. Therefore, the high-velocity gas has a small pressure, and the low-velocity gas has a large pressure. Therefore, it will tend to guide the gas inside the frequency converter 1 into the side ducts 4 and be discharged together with the second outlet duct 203, further accelerating the air flow velocity inside the frequency converter 1 and accelerating heat dissipation.

[0014] Preferably: filter screens 5 are provided at the ends of the first outlet duct 202 and the second outlet duct 203. Adding dust-proof filter screens can prevent sundries from entering the air duct.

[0015] Preferably: The square duct 2, the reduced-diameter duct 201, the first outlet duct 202, and the second outlet duct 203 are all made of thin aluminum plates. Aluminum has a low density, so that the ventilation ducts made of thin aluminum plates have strong corrosion resistance and good thermal conductivity while ensuring strength.

[0016] Working principle:

[0017] When the frequency converter is in use, the heat dissipation port of the frequency converter itself will discharge hot air. Then, the cooling fan 3 in the square duct 2 is started, and the cooling fan 3 will direct the heat to the reduced-diameter duct 201. Since the diameter of the reduced-diameter duct 201 is smaller than that of the square duct 2, the internal air in the reduced-diameter duct 201 will be accelerated to form high-velocity air. These high-velocity air will pass through the first outlet duct 202 and the second outlet duct 203. At the same time, the second outlet duct 203 is connected to the inside of the frequency converter 1 through the side duct 4. The second outlet duct 203 is high-velocity gas, and the side duct 4 connected to the inside of the frequency converter 1 is low-velocity gas. Therefore, the high-velocity gas has a small pressure, and the low-velocity gas has a large pressure. So, it will tend to guide the gas inside the frequency converter 1 into the side duct 4 and be discharged together with the second outlet duct 203, further accelerating the air flow rate inside the frequency converter 1 and accelerating heat dissipation.

[0018] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A high-voltage inverter heat dissipation device, comprising an existing inverter (1), wherein the existing inverter (1) is provided with a heat dissipation port on one side, the heat dissipation port of the inverter (1) is relatively sealed and connected to a square pipe (2), a heat dissipation fan (3) is provided inside the square pipe (2), the heat dissipation fan (3) is connected to an external power supply, and the middle part of the square pipe (2) passes through a hole reserved in the wall of the high-voltage inverter room, characterized in that: The end of the square pipe (2) is sealedly connected to a reduced-end pipe (201), and the reduced-end pipe (201) is sealedly connected to an outlet pipe 1 (202) and an outlet pipe 2 (203), and the outlet pipe 2 (203) is arranged to be inclined downward.

2. The high-voltage inverter heat dissipation device according to claim 1, characterized in that: The side of the second outlet pipe (203) is connected to a plurality of side pipes (4), and the side pipes (4) are connected to the interior of the frequency converter (1).

3. The high-voltage inverter heat dissipation device according to claim 2, characterized in that: The ends of the outlet pipe 1 (202) and the outlet pipe 2 (203) are both provided with filter screens (5).

4. The high-voltage inverter heat dissipation device according to claim 3, characterized in that: The square pipe (2), the necked pipe (201), the outlet pipe 1 (202) and the outlet pipe 2 (203) are all made of thin aluminum plates.

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