Radiator of overhead centrifugal fan

Abstract

The radiator comprises a radiator body, lower radiating fins, upper radiating fins, an air guide groove and the centrifugal fan, the lower radiating fins are sparsely arranged on the lower portion of the radiator body, the upper radiating fins are densely arranged on the upper portion of the radiator body, and the air guide groove is formed in the upper portion of the radiator body. The top of the radiator body is communicated with an air guide groove, the top of the air guide groove is communicated with a centrifugal fan, uniform and rapid heat dissipation can be carried out on the IGBT module through the design of the radiating fins which are sparse in bottom and dense in top in cooperation with the centrifugal fan with the air guide groove in the top, and the reliability of the power module is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of radiators, and in particular to the technical field of a radiator with a top-mounted centrifugal fan. Background Technology

[0002] In the grid-type energy storage converter industry, forced air cooling of IGBT modules using heat sinks is the most common heat dissipation method. Current heat sink designs generally employ a uniformly distributed fin design on the same heat sink, meaning the fins of the entire heat sink have equal tooth thickness and spacing. This design results in lower temperature rise of the IGBT modules on the air intake side and higher temperature rise of the IGBT modules on the air exhaust side. Existing air-cooled power module heat sinks cause uneven heat dissipation of IGBT modules, leading to inconsistent IGBT module lifespans and affecting the lifespan of the power module. Therefore, designing a heat sink with a top-mounted centrifugal fan to solve the defect of uneven heat dissipation of IGBT modules is essential. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the prior art by proposing a top-mounted centrifugal fan heat sink that can uniformly and quickly dissipate heat from the IGBT module through a design of sparse heat sink fins at the bottom and dense heat sink fins at the top, combined with a centrifugal fan with air guide grooves at the top, thereby improving the reliability of the power module.

[0004] To achieve the above objectives, this utility model proposes a top-mounted centrifugal fan radiator, comprising a radiator body, lower heat dissipation fins, upper heat dissipation fins, an air guide groove, and a centrifugal fan. The lower part of the radiator body is sparsely provided with a number of lower heat dissipation fins, the upper part of the radiator body is densely provided with a number of upper heat dissipation fins, the top of the radiator body is connected to an air guide groove, and the top of the air guide groove is connected to a centrifugal fan.

[0005] Preferably, the lower heat dissipation fins are arranged vertically, and the upper and lower heat dissipation fins are arranged parallel to each other.

[0006] Preferably, the bottom opening of the air guide groove is provided to cover the upper part of the upper heat dissipation fins.

[0007] Preferably, the centrifugal fan is a continuously variable speed fan, and a temperature sensor is embedded in the upper heat dissipation fins, and the temperature sensor is connected to the centrifugal fan.

[0008] Preferably, the centrifugal fan is an exhaust fan, with air intake at the bottom and air outlet at the side.

[0009] Preferably, a power cord is provided on the top of the centrifugal fan.

[0010] Preferably, both the lower and upper heat dissipation fins are copper-plated aluminum fins.

[0011] The beneficial effects of this utility model are as follows: By combining the heat sink body, lower heat sink fins, upper heat sink fins, air guide grooves and centrifugal fan, and through experimental optimization, this utility model can achieve uniform and rapid heat dissipation of IGBT modules through the design of heat sink fins with sparse lower fins and dense upper fins, combined with a centrifugal fan with air guide grooves on the top, thereby improving the reliability of the power module.

[0012] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a heat sink for a top-mounted centrifugal fan according to this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of a heat sink for a top-mounted centrifugal fan according to this utility model.

[0015] In the diagram: 1-Radiator body, 2-Air guide duct, 3-Centrifugal fan, 4-Lower heat dissipation fins, 5-Upper heat dissipation fins. Detailed Implementation

[0016] See Figure 1 and Figure 2 This utility model discloses a top-mounted centrifugal fan radiator, comprising a radiator body 1, lower heat dissipation fins 4, upper heat dissipation fins 5, an air guide slot 2, and a centrifugal fan 3. The lower part of the radiator body 1 is sparsely provided with several lower heat dissipation fins 4, and the upper part of the radiator body 1 is densely provided with several upper heat dissipation fins 5. The top of the radiator body 1 is connected to the air guide slot 2, and the top of the air guide slot 2 is connected to the centrifugal fan 3. The lower heat dissipation fins 4 are vertically arranged, and the upper heat dissipation fins 5 and the lower... The heat dissipation fins 4 are arranged parallel to each other. The bottom opening of the air guide trough 2 covers the upper part of the upper heat dissipation fin 5. The centrifugal fan 3 is a continuously variable speed fan. A temperature sensor is embedded in the upper heat dissipation fin 5. The temperature sensor is connected to the centrifugal fan 3. The centrifugal fan 3 is an exhaust fan. The centrifugal fan 3 has air intake at the bottom and air exhaust at the side. A power cord is provided at the top of the centrifugal fan 3. Both the lower heat dissipation fin 4 and the upper heat dissipation fin 5 are copper-plated aluminum fins.

[0017] This utility model combines a heat sink body 1, lower heat sink fins 4, upper heat sink fins 5, air guide groove 2, and centrifugal fan 3. Through experimental optimization, it can achieve uniform and rapid heat dissipation of IGBT modules by using a heat sink fin design with sparse lower and dense upper fins and a centrifugal fan 3 with air guide groove 2 on the top, thereby improving the reliability of the power module.

[0018] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A heat sink with a top-mounted centrifugal fan, characterized in that: The radiator includes a radiator body (1), lower heat dissipation fins (4), upper heat dissipation fins (5), air guide groove (2), and centrifugal fan (3). The lower part of the radiator body (1) is sparsely provided with several lower heat dissipation fins (4), and the upper part of the radiator body (1) is densely provided with several upper heat dissipation fins (5). The top of the radiator body (1) is connected to the air guide groove (2), and the top of the air guide groove (2) is connected to the centrifugal fan (3).

2. The heat sink for a top-mounted centrifugal fan as described in claim 1, characterized in that: The lower heat dissipation fin (4) is arranged vertically, and the upper heat dissipation fin (5) and the lower heat dissipation fin (4) are arranged parallel to each other.

3. The heat sink for a top-mounted centrifugal fan as described in claim 1, characterized in that: The bottom opening of the air guide groove (2) is covered and set on the upper part of the heat dissipation fins (5).

4. The heat sink for a top-mounted centrifugal fan as described in claim 1, characterized in that: The centrifugal fan (3) is a continuously variable speed fan, and a temperature sensor is sandwiched inside the upper heat dissipation fins (5). The temperature sensor is connected to the centrifugal fan (3).

5. The heat sink for a top-mounted centrifugal fan as described in claim 1, characterized in that: The centrifugal fan (3) is an exhaust fan, with air intake at the bottom and air outlet at the side.

6. The heat sink for a top-mounted centrifugal fan as described in claim 1, characterized in that: The centrifugal fan (3) is equipped with a power cord on its top.

7. A heat sink with a top-mounted centrifugal fan as described in claim 1, characterized in that: Both the lower heat dissipation fins (4) and the upper heat dissipation fins (5) are copper-plated aluminum fins.

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