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Heat dissipation device and frequency conversion cabinet

A technology of a heat dissipation device and a heat dissipation plate, which is applied in the field of electric motors, can solve the problems of large flow resistance of cooling flow channels and poor heat dissipation uniformity, and achieves the advantages of improving heat exchange efficiency, ensuring heat dissipation uniformity, and reducing the thermal resistance of flow channels. Effect

Pending Publication Date: 2022-02-01
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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Problems solved by technology

[0004] The invention discloses a heat dissipation device and a frequency conversion cabinet, which solves the problems of large flow resistance of the cooling channel of the existing heat dissipation device and poor heat dissipation uniformity

Method used

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with embodiment, but is not limited to the content on the description.

[0020] In the existing liquid cooling method, a flat-plate heat sink is usually used, and the cooling channels between multiple power components (such as: IGBT) are sequentially connected in series, and the cooling liquid enters the bottom of the power components (such as: IGBT) in sequence. The cooling flow channel of the first power component (such as: IGBT) is much better than that of the subsequent components, resulting in the worst cooling effect of the last power component (such as: IGBT), which becomes the bottleneck of heat dissipation. : IGBT) produces a weakening phenomenon of working capacity, and, as far as a single power element (such as: IGBT) is concerned, due to the series connection of cooling channels, the temperature on the power element (such as: IGBT) is also different, resulting in uneven heat dissipation.

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Abstract

The invention discloses a heat dissipation device and a frequency conversion cabinet. The heat dissipation device comprises a plurality of cooling flow channels, each cooling flow channel is arranged corresponding to one power element, the cooling flow channels are arranged in parallel, each cooling flow channel comprises a plurality of sub-flow channels, and the sub-flow channels are arranged in parallel. According to the heat dissipation device, the parallel sub-runner structures are adopted for the cooling runner corresponding to each power element, on one hand, the heat exchange area of the sub-runners is increased, sufficient heat exchange with the power elements can be achieved, and the heat exchange efficiency is improved; and on the other hand, compared with traditional series-parallel flow channels, the heat resistance of the flow channels can be reduced, and the heat dissipation capacity is improved. And the cooling liquid enters from the inlet and then flows through the corresponding power elements at the same time, so that the heat dissipation effects of the power elements are the same, and as the sub-flow channels are connected in parallel, the temperatures of the cooling liquid flowing into the power elements are the same, and the heat dissipation temperature uniformity can be ensured.

Description

technical field [0001] The invention relates to the technical field of electric motors, in particular to a cooling device and a frequency conversion cabinet. Background technique [0002] The frequency conversion cabinet is mainly used to adjust the speed of the AC motor. When the frequency conversion cabinet is working, the internal power components (such as IGBT) will heat up, resulting in an increase in the temperature of the frequency conversion cabinet. As the temperature inside the cabinet increases, the failure rate will decrease. increase, and the service life will decrease. In order to improve the application stability and service life of the frequency conversion cabinet, it is necessary to solve the problem of heat dissipation of power components in the frequency conversion cabinet and environmental heat dissipation. [0003] At present, the heat dissipation method of power components is gradually developing from air cooling to liquid cooling. However, since the cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K7/20H02M1/00
CPCH05K7/20218H05K7/20509H02M1/00
Inventor 陈万兴罗德会杨壮壮
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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