초록 ▼

The present invention provides a shroud for cooling a heatsink that is associated with a heat generating electrical component. Conventionally, the heatsink has a base portion with a first side and an oppositely disposed second side. The first side has cooling projections with outer ends that extend

The present invention provides a shroud for cooling a heatsink that is associated with a heat generating electrical component. Conventionally, the heatsink has a base portion with a first side and an oppositely disposed second side. The first side has cooling projections with outer ends that extend from the first side with the second side being attached to the heat generating electrical component. The shroud of the present invention comprises a wall that may be comprised of a thermoplastic or metallic material, The wall extends about and covers a portion of the cooling projections to form a passage for a flow of fluid about the cooling projections. The passage has a varying cross-sectional area to maximize the flow of the fluid about the cooling projections, to thereby enhance transfer of heat from the cooling projections to the fluid flowing through the passage. In one aspect, the varying cross-sectional area is formed by at least one of the walls surround the cooling projections having a concave shape projecting toward the cooling projections.

대표청구항 ▼

A method of cooling a heat generating electrical component, said heat generating electrical component having a heatsink associated therewith, said heatsink having a base portion with a first side and an oppositely disposed second side, said first side having cooling projections with outer ends, said

A method of cooling a heat generating electrical component, said heat generating electrical component having a heatsink associated therewith, said heatsink having a base portion with a first side and an oppositely disposed second side, said first side having cooling projections with outer ends, said cooling projections extending from said first side and said second side being attached to said heat generating electrical component, said method comprising the step of: placing a shroud about and over said heatsink after said heat sink is attached to said heat generating electrical component, said shroud having a wall extending about and covering a portion of said cooling projections to form a passage for a flow of fluid about said cooling projections, said wall having a generally elongated rectangular shape comprised of a first side wall and an oppositely disposed second side wall, both transversely joined to an intermediate wall and said first side wall being concave from front to back and toward said cooling projections, said passage having a varying cross-sectional area with a shape that is concave from front to back to maximize said flow of said fluid about said cooling projections, to thereby enhance transfer of heat from said cooling projections to said fluid flowing through said passage; and passing a flow of fluid through a fluid intake opening of the shroud and discharging said fluid through an oppositely disposed fluid export opening, said fluid intake and fluid export openings each having a cross-sectional area greater than said varying a cross-sectional area of said passage.