High power density dc-ac power inverter
AssigneeChyng Hong Electronic Co., Ltd.
InventorMu-Chun LIN
Life of this patent
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Abstract
A high power density DC-AC power inverter includes a casing corresponding to a rack. The casing has air inlets and air outlets arranged in a honeycomb shape and a fan unit. The casing is provided with two choke coils and a heat sink therein. The heat sink includes fins facing downward. A plurality of power elements are laterally provided on top of the heat sink. The heat generated from the power elements can be conducted to the fins of the heat sink quickly. The fan unit guides the outside air to the heat sink and the choke coils through the air inlets, and the heat is smoothly expelled out of the casing through the air outlets of the casing. The power inverter in a high density configuration still has a good heat dissipation effect.
Claims8
A high power density DC-AC power inverter, mounted to a rack, the high power density DC-AC power inverter comprising:
- a casing, corresponding in size to the rack and having a rectangular shape, a front side of the casing being formed with a plurality of air inlets, a rear side of the casing being formed with a plurality of air outlets, a bottom of the casing being provided with a bottom plate;
- a fan unit, disposed at one side of the casing, for guiding outside cold air to enter the casing via the air inlets and discharge to the outside via the air outlets in a guide direction;
- a heat sink, disposed in the casing, the heat sink including a plurality of spaced fins, the fins each having a long side parallel to the guide direction;
- a plurality of power elements, each having a heat dissipation surface, the heat dissipation surfaces of the power elements being laterally attached to the heat sink;
- a circuit board module, laterally disposed above the heat sink and electrically connected with the power elements;
- wherein when the power inverter is actuated, the power elements generate heat and the heat is conducted to the fins of the heat sink via a shortest route, the fan unit guides the outside cold air into the casing via the air inlets of the casing to pass through the fins of the heat sink for heat dissipation, and the heat is expelled out of the casing via the air outlets of the casing.
Dependencies are inferred from the claim text.