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Patent Searching and Data


Title:
INNER SPIRAL GROOVED TUBE WITH EXCELLENT HEAT TRANSFER PERFORMANCE AND HEAT EXCHANGER
Document Type and Number:
WIPO Patent Application WO/2021/107153
Kind Code:
A1
Abstract:
This inner spiral grooved tube has an outer diameter of 3-10 mm and has a plurality of grooves and fins arranged along the inner circumferential direction of the tube body and spirally formed along the longitudinal direction of the tube body, said inner spiral grooved tube being characterized in that the fins are rectangular in cross-section with the fin apex angle drawn on the cross-section of the tube body being in the range of 0±10°, the ratio (h/f) of fin height (h) to fin width (f) is 0.90-3.40, the ratio (c/f) of distance (c) between adjacent fins in the circumferential direction of the tube body to fin width (f) is 0.50-3.80, and the average value of (h/f) and (c/f) is 0.8-3.3.

Inventors:
HARATA TOSHIHIRO (JP)
NAKAMOTO MASAYUKI (JP)
OKAWA TAKUYA (JP)
NAKAURA YUSUKE (JP)
Application Number:
PCT/JP2020/044398
Publication Date:
June 03, 2021
Filing Date:
November 27, 2020
Export Citation:
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Assignee:
MITSUBISHI ALUMINIUM (JP)
International Classes:
F28F1/40; F28F21/08
Foreign References:
JP2012002453A2012-01-05
JP2018091610A2018-06-14
JP2019217340A2019-12-26
JPH06190476A1994-07-12
JP6391140B22018-09-19
JP2018091610A2018-06-14
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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