US 12,085,344 B2
Boiling enhancement device
Chun Li, Zhuzhou (CN); Guangfan Hu, Zhuzhou (CN); Chunhong Yao, Zhuzhou (CN); and Qiucheng Ma, Zhuzhou (CN)
Assigned to SMARTH TECHNOLOGY LTD., Zhuzhou (CN)
Appl. No. 17/426,179
Filed by SMARTH TECHNOLOGY LTD., Zhuzhou (CN)
PCT Filed Dec. 17, 2019, PCT No. PCT/CN2019/125970
§ 371(c)(1), (2) Date Jul. 28, 2021,
PCT Pub. No. WO2020/155901, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 201910086237.9 (CN), filed on Jan. 29, 2019.
Prior Publication US 2022/0099382 A1, Mar. 31, 2022
Int. Cl. F28D 15/02 (2006.01); F28D 15/04 (2006.01); F28F 3/02 (2006.01)
CPC F28D 15/0233 (2013.01) [F28D 15/046 (2013.01); F28F 3/027 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A boiling enhancement device, comprising an evaporation chamber having a cavity therein and boiling enhancement fins, wherein the boiling enhancement fins are arranged on an inner wall surface of the evaporation chamber, a phase-change heat exchange medium is arranged in the evaporation chamber, and the evaporation chamber absorbs heat from a heat source and transfers the heat to the phase-change heat exchange medium through the inner wall surface; the boiling enhancement fins are configured to increase the number of vaporization cores on the inner wall surface of the evaporation chamber and increase the area of boiling heat exchange so as to promote boiling vaporization of the phase-change heat exchange medium and reduce boiling thermal resistance,
the boiling enhancement fins comprise a plurality of sawtooth strip-shaped cooling fins arranged on the inner wall surface of the evaporation chamber,
the strip-shaped cooling fins are composed by gathering a plurality of sawtooth sheets, the sawtooth pitch of a minimum repeating unit among the sawtooth strip-shaped cooling fins is less than 1 mm, and the thickness of each of the sawtooth sheets is less than 0.2 mm,
windowed structures are formed in the sawtooth strip-shaped cooling fins, and the porosity of the sawtooth strip-shaped cooling fins is smaller than 60% in such a way that the sawtooth strip-shaped cooling fins are densely arranged.