Patent ID: 6789610
Filing Date: 2004-09-14
Classification: H01L

Abstract:
A cooling device for dissipating heat from a component, comprising:a heat mass including a base, a chamber bore extending inward of the base, a boss symmetrically positioned about an axis of the heat mass and including a land and a threaded bore extending through the boss to the chamber bore; a thermal core connected with the base and including a stepped face that extends into the chamber bore and a mounting surface adapted to thermally connect the thermal core and the heat mass with the component; a plug including a plurality of plug fins that are spaced apart to define a plug slot between adjacent plug fins, a step face, a threaded neck extending from the step face and adapted to be threaded into the threaded bore until the step face is contact with the land, and a plug cavity formed in the threaded neck; a vapor chamber defined by the plug cavity, the chamber bore, and the stepped face; a phase change liquid in contact with a portion of the stepped face and sealed in the vapor chamber at a low pressure; a plurality of vanes connected with the heat mass and spaced apart to define a primary slot therebetween that extends to the heat mass, the vanes have a surface area that increases in a radially outward direction from the axis, the vanes including at least one secondary slot extending through a portion of each vane to define a plurality of fins in each vane, the vanes including a top face, an aerodynamically profiled inner wall including a first portion extending from the boss and terminating at a second portion that extends to the top face, the inner walls of the vanes defining a chamber that surrounds the boss, an outer wall having a surface profile that widens from the base to the top face and includes therebetween a smooth curved portion, a draft portion, and a smooth radially outward portion; and wherein heat is dissipated from the component by heat in the thermal core converting the phase change liquid from a liquid state to a vapor state and by an air flow through the chamber, the primary slots, the secondary slots, and the plug slots.