ELECTRONIC DEVICE AND FREQUENCY CONVERTER OF MOTOR
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Accused Products
Abstract
The present invention provides an electronic device, comprising: a circuit board having at least one first heat-generating element and at least one second heat-generating element mounted thereon; a heat sink connected to said at least one first heat-generating element; a fan facing said heat sink; and an airflow guiding member placed between said fan and said heat sink for guiding the cooling air from said fan to said heat sink and said at least one second heat-generating element respectively. Said electronic device may further comprise a separating member for separating a main body of said at least one second heat-generating element from said circuit board, so as to prevent the cooling air guided to said at least one second heat-generating element from flowing to said circuit board; a bracket for separating said at least one first heat-generating element from other elements on said circuit board, so as to thermally insulate between them; and a flow-guiding gate guiding the airflow from said fan, and dispensing more airflow flow through the region on the heat sink corresponding to at least one first heat-generating element.
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Citations
72 Claims
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1-46. -46. (canceled)
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47. An electronic device, comprising:
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a circuit board having at least one first heat-generating element and at least one second heat-generating element mounted thereon; a heat sink connected to the at least one first heat-generating element; and a fan facing the heat sink, wherein the electronic device further comprises an airflow guiding member placed between the fan and the heat sink for guiding the cooling air from the fan to the heat sink and the at least one second heat-generating element respectively. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61)
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62. A frequency converter for driving a motor, comprising:
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a circuit board, on which an insulating gate bipolar transistor module serving as a main heat-generating element and at least one secondary heat-generating element are mounted, a main body of the least one secondary heat-generating element protruding from the circuit board; a heat sink thermally contacted with the insulating gate bipolar transistor module, and a fan; an airflow guiding member disposed between the fan and the heat sink for guiding the cooling air from the fan to the heat sink and to the least one secondary heat-generating element respectively; and a separating member for separating at least one portion of the main body of the at least one secondary heat-generating element from the circuit board, so as to prevent an airflow guided to the at least one secondary heat-generating element from flowing to the circuit board. - View Dependent Claims (63, 64, 65, 66, 67, 68, 69, 70, 71, 72)
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Specification