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Heat radiator

A heat dissipation device and heat dissipation plate technology, which is applied in the direction of circuit devices, battery circuit devices, transportation and packaging, etc., can solve the problems of reduced insulation performance and narrow intervals between each other

Inactive Publication Date: 2008-03-05
TOSHIBA CARRIER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In addition, when fastening and fixing the components of the above two types of heat sinks, since there is no member that restricts the position of the components, the insulation performance may be reduced due to the narrow distance between adjacent components.

Method used

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Examples

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Embodiment Construction

[0026] Hereinafter, the present invention will be described in detail based on the best embodiments shown in the drawings.

[0027] FIG. 1 is a circuit diagram showing a schematic configuration of a main circuit of an inverter device to which the present invention is applied. In this figure, a full-wave rectification-type rectifier 2 is connected to a single-phase AC power supply 1 , and a full-wave rectified pulsating current is output from the rectifier 2 . This pulsating current is smoothed by the smoothing capacitor 3 and supplied as a direct current to the inverter main circuit 4 .

[0028] The main circuit 4 of the inverter connects six switching elements U, V, W, X, Y, and Z to a three-phase bridge. Here, switching elements U and X, V and Y, and W and Z are connected in series, and these series-connected circuits are connected in parallel, and a DC voltage is applied to both ends thereof. Furthermore, the respective interconnection points of the switching elements U a...

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PUM

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Abstract

The fixing plate for fixing to a heat sink six switching devices U, X, V, Y, W, and Z arranged in a line on a printed board is made of a single metal plate to which forming processing has been applied, and has a base portion (11) formed being elongated in a direction in which the switching devices are arranged and three device-pressing portions (15) provided at one side of the base portion, in an elongated form being spaced apart form each other and being coupled through coupling portions (14) with the base portion, wherein the device-pressing portion has a width, in the longitudinal direction of the base portion, for pressing two of the switching devices as a pair, and has a through-hole (16) for a screw, formed in the middle of the longitudinal width thereof, for sandwiching the switching device between the device-pressing portion and the heat sink, and fastening the switching device to the heat sink; and wherein the coupling portion is formed so as to have a width smaller than that of the device-pressing portion so that the device-pressing portion can be moved obliquely against the heat sink.

Description

technical field [0001] The present invention relates to a heat sink having a fixing plate for fixing six switching elements arranged in a row on a printed circuit board to a heat sink in a device using six switching elements such as a three-phase inverter device. Background technique [0002] For example, in the case of capacity-controlled operation of the compressor of an air conditioner, a rectifier is used to perform full-wave rectification of the AC voltage, and the obtained DC is converted into AC by the inverter main circuit and supplied to the motor for driving the compressor. inverter device. The inverter main circuit is constructed by connecting six switching elements such as transistors and IGBTs in a three-phase bridge. [0003] Since a large current flows through these switching elements, a large amount of heat is generated, and there is a possibility of thermal destruction in this state. Therefore, it is mounted on a radiator plate (cooling device) made of a m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L23/40H05K7/20H02M7/48H02J7/00
CPCH02J7/0029H01L2023/4031H01L23/4006H01L2023/405H01L2023/4087H05K7/209H01L2023/4062H01L2924/0002H02J7/00309H01L2924/00H05K7/20
Inventor 清水慎也池谷智蛭间淳之村重义则远藤隆久长谷川德久
Owner TOSHIBA CARRIER CORP