US 12,092,241 B2
Refrigerant pipe
Junichi Hamadate, Osaka (JP); Masanori Jindou, Osaka (JP); and Hao Ye, Sakai (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP); and FUSO INDUSTRIES LTD., Sakai (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP); and FUSO INDUSTRIES LTD., Sakai (JP)
Filed on Jul. 21, 2022, as Appl. No. 17/813,933.
Application 17/813,933 is a continuation of application No. PCT/JP2020/046451, filed on Dec. 14, 2020.
Claims priority of application No. 2020-010799 (JP), filed on Jan. 27, 2020.
Prior Publication US 2022/0349501 A1, Nov. 3, 2022
Int. Cl. F16L 13/007 (2006.01); F16L 13/08 (2006.01); F25B 41/40 (2021.01)
CPC F16L 13/007 (2013.01) [F16L 13/08 (2013.01); F25B 41/40 (2021.01)] 6 Claims
OG exemplary drawing
 
1. A refrigerant pipe constituting a refrigerant circuit of a refrigeration apparatus, the refrigerant pipe comprising:
a pipe body made of stainless steel; and
a first connecting tube:
made of copper or a copper alloy,
that is a straight tube having constant outer and inner diameters and smooth outer and inner surfaces, and
that is configured to connect a first different refrigerant pipe to the refrigerant pipe, wherein
the first connecting tube is connected to an outer circumferential surface of a first end of the pipe body in a pipe axis direction of the pipe body,
the first connecting tube overlaps with the pipe body in a pipe diameter direction in an entirety of the first connecting tube in the pipe axis direction, and
the pipe body protrudes from both ends of the first connecting tube in the pipe axis direction.