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Patent Searching and Data


Title:
REFRIGERANT PIPING AND REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/019960
Kind Code:
A1
Abstract:
Refrigerant piping (10A) comprises a first pipe (21) and a second pipe (22). The first pipe (21) has a stainless steel pipe main body (21a) and a connection pipe (21b) that is provided in an end section of the pipe main body (21a) in the pipe axis direction and comprises a material different from stainless steel. The connection pipe (21b) has a protruding section (21b1) that protrudes from the end of the pipe main body (21a), in the pipe axis direction. The second pipe (22) comprises: a second large diameter section (22a) that comprises the same material as the connection pipe (21b) and is arranged at the end in the pipe axis direction; a second small diameter section (22b) having a smaller diameter than the second large diameter section (22a); and a step section (22c) arranged between the second large diameter section (22a) and the second small diameter section (22b). The connection pipe (21b) is inserted in the second large diameter section (22a) and the protruding section (21b1) is in contact with the step section (22c). The outer circumferential surface of the connection pipe (21b) is connected to the inner circumferential surface of the second large diameter section (22a).

Inventors:
HAMADATE JUNICHI (JP)
TERAMOTO YOSHIHIRO (JP)
JINDOU MASANORI (JP)
MATSUDA HIROAKI (JP)
OKUNO MASATO (JP)
Application Number:
PCT/JP2020/024480
Publication Date:
February 04, 2021
Filing Date:
June 23, 2020
Export Citation:
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Assignee:
DAIKIN IND LTD (JP)
International Classes:
B23K1/00; B23K1/19; F16L13/007; F16L13/08; F25B41/00
Foreign References:
JP2016205610A2016-12-08
JPS5754782U1982-03-30
US8876425B22014-11-04
US3205573A1965-09-14
JP2010151327A2010-07-08
US4415187A1983-11-15
JP2006152933A2006-06-15
Attorney, Agent or Firm:
SUNCREST PATENT AND TRADEMARK ATTORNEYS (JP)
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