Hotspot coldplate spray cooling system
View Patent ↗The present invention is a coldplate hotspot spray cooling system that cools an electronic component creating a varying amount of heat across its surfaces. Liquid coolant is dispensed upon a spray pin protruding from a base wherein the liquid creates a very high heat absorbing evaporative thin film. The spray pin is located over an area of the chip that produces a large heat flux, typically referred to as a hotspot. The small size and isolation of the spray pin provides the ability to generate very large heat fluxes. Multiple spray pins are possible.
1. A spray cooling system comprising:
an electronic component with a hotspot zone having a high heat flux;
a spray module having a cavity within, said spray module capable of receiving a supply of liquid coolant;
a spray fin located generally over said hotspot zone and protruding within said cavity of said spray module
said spray module having a nozzle located generally over and in a spaced apart relationship to said spray fin, said nozzle for breaking up said supply of liquid coolant into a droplet pattern that creates a thin evaporative coolant film on a top surface of said spray fin; and
wherein said thin evaporative coolant film is capable of thermally managing said hotspot zone.
2. The spray cooling system of claim 1 , wherein said nozzle is an atomizer.
3. The spray cooling system of claim 2 , wherein said atomizer is a pressure swirl atomizer.
4. The spray cooling system of claim 1 , wherein said top surface of said spray fin includes a surface enhancement.
5. The spray cooling system of claim 1 , wherein said supply of liquid coolant is below its saturation temperature prior to entering said nozzle.
6. The spray cooling system of claim 1 , wherein said supply of liquid coolant is above its saturation temperature prior to entering said nozzle.
7. The spray cooling system of claim 1 , wherein said top surface of said base contains a portion of said supply of liquid coolant that further cools said electronic component.
8. The thermal management system of claim 1 , wherein said recipient base includes a plurality of grooves.