Disconnected and staggered air-cooling radiator

A heat sink and air-cooled technology, which is applied in the field of cooling devices for auxiliary power modules of electric locomotives, can solve the problems of demanding heat sink requirements and reduced local heat dissipation capacity, and achieve the effects of improving heat dissipation capacity decline, reducing processing difficulty, and uniform temperature

Inactive Publication Date: 2013-03-20
CRRC DALIAN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing problems: With the rapid development of high power and high integration of electronic components, the heat released during their work is increasing, and the requirements for radiators are becoming more and more stringent. The temperature uniformity of the radiator substrate is normal for power modules. Work has a great influence, in the direction of air flow, the temperature difference between the substrate and the air shows a downward trend, and the local heat dissipation capacity decreases. Improving this situation is very important for the thermal performance of the radiator

Method used

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  • Disconnected and staggered air-cooling radiator
  • Disconnected and staggered air-cooling radiator
  • Disconnected and staggered air-cooling radiator

Examples

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Embodiment Construction

[0029] Such as figure 1 As shown, a discontinuous misplaced air-cooled radiator includes a base plate 1, a baffle plate 2 and a fin group, and the fin group includes a wide-pitch fin group 3 and a narrow-pitch fin group 4, forming the wide The fins of the pitch fin group 3 and the narrow pitch fin group 4 are straight fins or corrugated fins with a rectangular cross section. When the fins are corrugated fins (such as Figure 4 shown), after the corrugated fin is fixed to the substrate 1, the wavelength direction of the corrugated fin is parallel to or perpendicular to the flow direction of the air, and the wavelength λ of the corrugated fin is 10- 20mm.

[0030] In this example, the given fins are straight fins (such as figure 2 shown), the thickness of the fins is S3=2mm; the tooth pitch of the wide-pitch fin group 3 is S2, S2=12mm; the tooth pitch of the narrow-pitch fin group 4 is S, S=6mm; The fin width of the wide pitch fin group 3 is L2, L2=200mm; the length of the ...

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Abstract

The invention discloses a disconnected and staggered air-cooling radiator which comprises a substrate, baffles and fin arrays. The radiator is characterized in that the fin arrays comprise a wide-pitch fin group and a narrow-pitch fin group; the baffles are fixed at two ends of the substrate, accommodation space capable of accommodating the wide-pitch fin group and the narrow-pitch fin group is formed between the substrate and the baffles, the wide-pitch fin group and the narrow-pitch fin group are fixed in the accommodation space, and a disconnected area is arranged between the wide-pitch fin group and a narrow-pitch fin group. According to the disconnected and staggered air-cooling radiator, two groups radiating fin arrays with different pitches are arranged, so that the problem of reduced radiating capacities in a flow direction is solved, the substrate mounting face temperature is uniform, the normal operation of a power module is facilitated, and the accident frequency caused by local excess temperatures is reduced; and the processing difficulty is decreased while thermal resistance is met, accordingly, the processing cost is reduced, and the economic applicability is high.

Description

technical field [0001] The invention relates to the technical field of heat exchange, in particular to a cooling device for an auxiliary power module of an electric locomotive, that is, an intermittent dislocation air-cooled radiator. Background technique [0002] At present, the working mode of the air-cooled radiator is: the heat generated by the power module is transferred to the substrate through its installation contact surface in the form of heat conduction, and then the heat is diffused from the base plate to the fins in the form of heat conduction, and finally the heat is exchanged by convection The heat is transferred from the air-cooled radiator to the atmosphere in the best way. When the entire system reaches thermal equilibrium, the substrate temperature will be maintained within the normal operating temperature range of the power module. [0003] Existing problems: With the rapid development of high power and high integration of electronic components, the heat ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K7/20
CPCH01L23/34F28F13/14H05K7/20F28F3/02H01L23/367H01L2924/0002H01L2924/00
Inventor 王硕张学谦郭华仲
Owner CRRC DALIAN INST CO LTD
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