Method for optimum conductive heat transfer with a thin flexible workpiece
AssigneeVarian Associates, Inc.
InventorScott C. Holden
Life of this patent
Estimating the term…
Abstract
Conductive heat transfer between a thin deformable workpiece and heat sink is optimized by imposing a load over the workpiece resulting in a uniform contact pressure distribution in said workpiece which is also the maximum stress consistent with the elastic properties of the workpiece. The surface of the heat sink is given a contour determined by these criteria for a thin circular disk clamped thereto.
Claims7
A method for optimizing transfer of thermal energy with a thin, flexible workpiece in vacuum comprising:
- establishing the geometry and material of the thin, flexible workpiece;
- and
- selecting a contour of a nonplanar, nonspherical contact surface, based on the geometry and material of said workpiece, for transfer of thermal energy to or from said workpiece when said workpiece is clamped thereto at its periphery, said contour being selected to impose uniformity of contact pressure over the surface area of said workpiece and to simultaneously stress said workpiece to approach the limiting elastic stress thereof.
A method for transfer of thermal energy with a thin, flexible workpiece in vacuum comprising:
- providing a thermally conductive member having a nonplanar, nonspherical contact surface for transfer of thermal energy to or from said workpiece, including the step of selecting the contour of said contact surface to impose uniformity of contact pressure over the surface area of said workpiece for peripheral clamping and to simultaneously stress said workpiece to approach the limiting elastic stress thereof;
- and
- clamping a peripheral portion of said workpiece to said contact surface such that said workpiece conforms to said contact surface with uniform contact pressure over the surface area of said workpiece.
The method of optimizing transfer of heat by conduction between a thin deformable workpiece and a heat sink surface comprising
- (a) clamping a peripheral portion of said workpiece to said heat sink surface,
- (b) deforming said workpiece against said heat sink surface,
- (c) maintaining a uniformly distributed contact pressure between said workpiece and said heat sink surface, and simultaneously
- (d) stressing said workpiece to approach the limiting elastic stress thereof.
Dependencies are inferred from the claim text.