Power unit heat dissipation structure of low-power high-voltage frequency converter

Abstract

The utility model relates to the technical field of frequency converters, in particular to a low-power high-voltage frequency converter power unit heat dissipation structure which is installed on a frequency converter body, an air duct is arranged in the frequency converter body, and a heat dissipation structure is fixedly installed on the top of the frequency converter body. The heat dissipation structure comprises an upper cover plate, side plates are fixedly installed on the two sides of the bottom of the upper cover plate, the two side plates are tightly attached to the inner wall of the air duct, when the heat dissipation structure, the air duct and the frequency converter body work, the clamping cover drives to suck external cold air into the air duct, and at the moment, through arrangement of guide plates on the two sides, the cold air can rapidly flow downwards; through the wave-shaped design of the plurality of wave fins, the flowing speed of cold air in the air duct can be slowed down, and the cold air and heat are fully mixed and then discharged through the heat dissipation cover, so that the internal temperature of the frequency converter main body can be reduced, and the purposes that the cold air stays in the air duct for a long time and is mixed with the heat to be completely brought out are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to frequency converter technical field, concretely is a kind of low-power high-voltage frequency converter power unit heat dissipation structure. BACKGROUND

[0002] Frequency converter is applied variable frequency technology and microelectronic technology, by changing motor working power frequency mode to control the power control equipment of alternating current motor, frequency converter is mainly composed of rectification (AC to DC), filtering, inversion (DC to AC), brake unit, drive unit, detection unit microprocessing unit etc..Frequency converter adjusts the voltage and frequency of output power supply by the opening and closing of internal IGBT (Insulated Gate Bipolar Transistor), according to the actual need of motor to provide the power supply voltage required by it, and then reaches the purpose of energy saving, speed regulation, in addition, frequency converter has many protection functions, such as overcurrent, overvoltage, overload protection etc..With the continuous improvement of industrial automation, frequency converter has been very widely used.

[0003] The existing high-voltage frequency converter unit heat dissipation structure still has certain deficiency in actual use process: the existing heat dissipation structure makes cold air flow relatively quickly in the air duct by fan and fin, so that it cannot completely take out the heat in the air duct, resulting in heat accumulation in the air duct, which reduces the working efficiency of the frequency converter and affects normal work, based on the existing technical deficiency, the utility model designs a low-power high-voltage frequency converter power unit heat dissipation structure. UTILITY MODEL CONTENT

[0004] In view of the deficiency of prior art, the utility model provides a low-power high-voltage frequency converter power unit heat dissipation structure, which has the advantages of making cold air stay in the air duct for a long time and mixing with heat to completely take it out.

[0005] The utility model provides the following technical scheme: a low-power high-voltage frequency converter power unit heat dissipation structure is installed in the frequency converter main body, the inside of the frequency converter main body is provided with an air duct, and the top of the frequency converter main body is fixedly installed with a heat dissipation structure.

[0006] As a preferred technical scheme of the utility model, the outer surface of the frequency converter main body is provided with a control panel on one side, and the outer surface of the frequency converter main body is provided with an air outlet on one side.

[0007] As a preferred technical scheme of the utility model, the inside of the air outlet is fixedly installed with a heat dissipation cover, and the outer surface of the frequency converter body is provided with a cooling structure on one side.

[0008] As a preferred technical scheme of the utility model, the cooling structure comprises a sticking groove, and an upper pipe groove is formed in the upper side of the sticking groove.

[0009] As a preferred technical scheme of the utility model, a lower pipe groove is formed in the lower side of the sticking groove, and a cooling pipe is placed in the inside of the sticking groove.

[0010] As a preferred technical scheme of the utility model, the upper and lower openings of the cooling pipe are aligned with the upper pipe groove and the lower pipe groove.

[0011] As a preferred technical scheme of the utility model, the outer surface of the cooling pipe is provided with a fixing plate, and the fixing plate is connected with the frequency converter body through bolts.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The small-power high-voltage frequency converter power unit heat dissipation structure, through the heat dissipation structure and the air duct, when the frequency converter body works, the external cold air is drawn into the inside of the air duct through the cap driving, at this time, through the setting of the two side guide plates, the cold air can flow downward rapidly, through the wave-shaped design of the multiple wave fins, the flow speed of the cold air in the air duct can be slowed down, the cold air and the heat are fully mixed and then discharged through the heat dissipation cover, thereby the temperature inside the frequency converter body can be reduced, and the purpose that the cold air stays in the air duct for a long time and mixes with the heat to take it out completely is achieved.

[0014] 2. The small-power high-voltage frequency converter power unit heat dissipation structure, through the cooling structure, when the frequency converter body works, the cooling pipe is fixed in the inside of the sticking groove through the fixing plate so as to be close to the sticking groove, then the upper opening of the cooling pipe is connected with the water pipe through the upper pipe groove, at this time, when the water faucet is opened, the cold water flows in the cooling pipe, and finally flows into the water pool from the lower side of the cooling pipe, thereby cooperating with the heat dissipation structure to rapidly cool the frequency converter body. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the appearance structure schematic view of the utility model;

[0016] Figure 2 It is the heat dissipation cover structure schematic view of the utility model;

[0017] Figure 3 It is the air duct structure schematic view of the utility model;

[0018] Figure 4 It is the heat dissipation structure schematic view of the utility model;

[0019] Figure 5 It is a cooling structure schematic view of the utility model.

[0020] In the drawing: 1, frequency converter main body; 2, heat dissipation structure; 21, upper cover plate; 22, side plate; 23, guide plate; 24, clamping cover; 25, fan; 26, wave fin; 27, ventilation opening; 3, cooling structure; 31, sticking groove; 32, upper pipe groove; 33, lower pipe groove; 34, cooling pipe; 35, fixed plate; 4, air duct; 5, air outlet; 6, heat dissipation cover; 7, control panel. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1-5 A small power high-voltage frequency converter power unit heat dissipation structure is installed on the frequency converter main body 1, the inside of the frequency converter main body 1 is provided with an air duct 4, and the top of the frequency converter main body 1 is fixedly installed with a heat dissipation structure 2; the heat dissipation structure 2 comprises an upper cover plate 21, the bottom of the upper cover plate 21 is fixedly installed with side plates 22 on both sides, the two side plates 22 are tightly attached to the inner wall of the air duct 4, the guide plates 23 are fixedly installed at the connecting angle between the two side plates 22 and the upper cover plate 21, the clamping cover 24 is fixedly installed in the inside of the upper cover plate 21 through bolts, the fan 25 is arranged below the clamping cover 24, a plurality of wave fins 26 are fixedly installed between the two side plates 22, and the ventilation openings 27 are formed between the plurality of wave fins 26.

[0023] Please refer to Figures 1-3 The outer surface of the frequency converter main body 1 is provided with a control panel 7, and the outer surface of the frequency converter main body 1 is provided with an air outlet 5. The heat dissipation cover 6 is fixedly installed in the inside of the air outlet 5, and the cooling structure 3 is arranged on one side of the outer surface of the frequency converter main body 1.

[0024] The drive of the frequency converter main body 1 is controlled through the control panel 7, when the frequency converter main body 1 is driven, the fan 25 drives the external cold air into the air duct 4. The heat mixed with the cold air in the inside of the air duct 4 is discharged from the heat dissipation cover 6.

[0025] Please refer to Figure 3 And Figure 5The cooling structure 3 comprises a sticking groove 31, and an upper pipe groove 32 is formed on the upper side of the sticking groove 31. A lower pipe groove 33 is formed on the lower side of the sticking groove 31, and the cooling pipe 34 is placed in the sticking groove 31. The upper and lower openings of the cooling pipe 34 are aligned with the upper pipe groove 32 and the lower pipe groove 33. The outer surface of the cooling pipe 34 is provided with a fixing plate 35, and the fixing plate 35 is connected with the frequency converter body 1 through bolts.

[0026] When the frequency converter body 1 works, the cooling pipe 34 is fixed in the sticking groove 31 through the fixing plate 35 and closely adheres to the sticking groove 31, then the upper opening of the cooling pipe 34 is connected with the water pipe through the upper pipe groove 32, at this time, when the faucet is opened, the cold water flows in the cooling pipe 34, and finally flows into the water pool from the lower opening of the cooling pipe 34, thereby the frequency converter body 1 can be rapidly cooled in cooperation with the heat dissipation structure 2.

[0027] When the cooling pipe 34 is fixed in the sticking groove 31 through the fixing plate 35 and closely adheres to the sticking groove 31, then the upper opening of the cooling pipe 34 is connected with the water pipe through the upper pipe groove 32, at this time, when the faucet is opened, the cold water flows in the cooling pipe 34, and finally flows into the water pool from the lower opening of the cooling pipe 34, thereby the frequency converter body 1 can be rapidly cooled in cooperation with the heat dissipation structure 2.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A small power high voltage frequency converter power unit heat dissipation structure, installed in a frequency converter main body (1), characterized in that: The inside of the frequency converter body (1) is provided with an air duct (4), and the top of the frequency converter body (1) is fixedly provided with a heat dissipation structure (2); The heat dissipation structure (2) comprises an upper cover plate (21), the bottom of the upper cover plate (21) is fixedly provided with side plates (22) on both sides, the two side plates (22) are tightly attached to the inner wall of the air duct (4), the two side plates (22) are fixedly provided with guide plates (23) at the connection angle with the upper cover plate (21), the inside of the upper cover plate (21) is fixedly provided with a clamping cover (24) through bolts, the clamping cover (24) is provided below with a fan (25), a plurality of wave fins (26) are fixedly arranged between the two side plates (22), and a plurality of ventilation openings (27) are formed between the wave fins (26).

2. The heat dissipation structure of a power unit of a small-power high-voltage frequency converter according to claim 1, characterized in that: The outer surface of the frequency converter body (1) is provided with a control panel (7) on one side, and the outer surface of the frequency converter body (1) is provided with an air outlet (5) on one side.

3. The heat dissipation structure of a power unit of a small-power high-voltage frequency converter according to claim 2, characterized in that: The inside of the air outlet (5) is fixedly provided with a heat dissipation cover (6), and the outer surface of the frequency converter body (1) is provided with a cooling structure (3) on one side.

4. The heat dissipation structure of the power unit of the low-power high-voltage frequency converter according to claim 3, characterized in that: The cooling structure (3) comprises a sticking groove (31), and an upper pipe groove (32) is formed in the upper side of the sticking groove (31).

5. The heat dissipation structure of a power unit of a small-power high-voltage frequency converter according to claim 4, characterized in that: A lower pipe groove (33) is formed in the lower side of the sticking groove (31), and a cooling pipe (34) is placed in the inside of the sticking groove (31).

6. The heat dissipation structure of a power unit of a small-power high-voltage frequency converter according to claim 5, characterized in that: The upper and lower openings of the cooling pipe (34) are aligned with the upper pipe groove (32) and the lower pipe groove (33).

7. The heat dissipation structure of a power unit of a small-power high-voltage frequency converter according to claim 5, characterized in that: The outer surface of the cooling pipe (34) is provided with a fixed plate (35), and the fixed plate (35) is connected with the frequency converter body (1) through bolts.

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