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Heat radiation device for middle and high voltage high-power case frequency converter

A technology of heat dissipation device and frequency converter, applied in the direction of output power conversion device, cooling/ventilation/heating transformation, electrical components, etc., can solve the problems of high noise, high speed, large air volume, etc. The effect of uniform airflow

Inactive Publication Date: 2008-03-19
SHANGHAI STEP ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-speed centrifugal fan has large air volume and high wind pressure, but it is followed by high speed, high loss, high noise, large vibration, shorter life than ordinary fans, and higher price

Method used

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  • Heat radiation device for middle and high voltage high-power case frequency converter
  • Heat radiation device for middle and high voltage high-power case frequency converter

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Embodiment Construction

[0010] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0011] It can be seen from Fig. 2 that the present invention includes: cabinet rear plate 2, frequency converter rear air chamber 3, multiple windows 4 for ventilation and heat dissipation of the power unit, power unit 5, front air inlet 6, cabinet front air chamber 7, The air isolation board 8; also includes: at least one axial flow fan 9 inside the cabinet rear panel 2, a rear air outlet grid 10 on the cabinet rear panel 2, and an axial fan bracket 11;

[0012] The at least one axial flow fan 9 is six, and two columns are arranged sequentially from top to bottom;

[0013] The front air outlet 6, the air outlet of the air separation plate 8, the array of axial flow fans 9 and the rear air outlet grid 10 are located on the same straight line;

[0014] The air flow direction of the rear air outlet grid 10 is within 45° up and down of the horizon...

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Abstract

The invention relates to a heat radiator for middle and high-voltage high-power cabinet frequency converter. The heat radiator comprises a cabinet back plate (2), an air chamber (3) at the back part of the frequency converter, a power unit (5), a plurality of windows for ventilation of the power unit, a front air inlet (6), an air chamber (7) at the front part of the cabinet, an air partitioning plate (8), at least an axial flow blower (9) at the inner side of the cabinet back plate (2), a back air outlet screen (10) on the cabinet back plate (2), and an axial flow blower bracket (11). Compared with the prior art, the invention has the advantages of improved heat radiation efficiency due to a horizontal air duct, good heat radiation effect, low noise, improved reliability due to the shared air chambers, low cost, a blower array composed of a plurality of blower sets, uniform air pressure and airflow, improved service life due to the low-speed blower, reduced noise and mechanical vibration, and wide application range.

Description

technical field [0001] The invention relates to a medium and high-voltage high-power cabinet-type frequency converter, in particular to a cooling device of the frequency converter. Background technique [0002] Medium and high-voltage high-power cabinet-type inverters have complex structures, and a large number of semiconductor power devices are used inside. If the heat generated by these devices is not discharged in time, it will have a great impact on the working efficiency, life and reliability of the devices. Since there are many heat-generating components inside the medium and high-voltage high-power inverter, if one or several components are cooled by an independent fan, it is necessary to use a large number of small-capacity fans, which will increase the complexity of the system and affect the reliability and maintainability of the system. make an impact. Therefore, most of the products currently use the method of centralized exhaust and heat dissipation. [0003] A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00H05K7/20
Inventor 高乾龚莉
Owner SHANGHAI STEP ELECTRIC
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