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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10697568 B1

PDFFull Text
Date of Patent:
Jun. 30, 2020

Filed:

Sep. 25, 2014

Refrigerant pipe, method of manufacturing the refrigerant pipe, and heat exchanger including the refrigerant pipe

Applicant:

Mitsubishi Electric Corporation, Tokyo, JP;

Inventors:

Takashi Nakajima, Tokyo, JP;

Nobuaki Miyake, Tokyo, JP;

Yudai Morikawa, Tokyo, JP;

Assignee:

Mitsubishi Electric Corporation, Tokyo, JP;

Attorney:

Posz Law Group, PLC

Primary Examiner:

David Bochna

Int. Cl.
CPC ...
F16L 13/08 (2006.01); F28F 21/08 (2006.01); F28F 9/18 (2006.01); B23K 1/00 (2006.01); B23K 33/00 (2006.01); B23K 1/008 (2006.01); B23K 1/19 (2006.01); B23K 1/18 (2006.01); F28F 1/32 (2006.01); F28D 1/047 (2006.01); F28D 21/00 (2006.01); B23K 101/14 (2006.01); B23K 103/10 (2006.01);
U.S. Cl.
CPC ...
F16L 13/08 (2013.01); B23K 1/008 (2013.01); B23K 1/0012 (2013.01); B23K 1/18 (2013.01); B23K 1/19 (2013.01); B23K 33/006 (2013.01); F28F 9/182 (2013.01); F28F 21/084 (2013.01); B23K 2101/14 (2018.08); B23K 2103/10 (2018.08); F28D 1/0475 (2013.01); F28D 2021/0068 (2013.01); F28F 1/32 (2013.01); F28F 2275/045 (2013.01);
Abstract

A refrigerant pipe is provided to be capable of preventing a change in a length by which the refrigerant pipe is inserted after the refrigerant pipe is inserted. The refrigerant pipe includes a heat-exchanger-side pipe having a pipe component insertion flare formed at an end portion of the heat-exchanger-side pipe and at least one protrusion formed on an inner peripheral portion of the pipe component insertion flare, and a pipe component having a smaller outer diameter than an inner diameter of the pipe component insertion flare. A height of the at least one protrusion is greater than a dimension of a clearance defined on the basis of a difference between the inner diameter of the pipe component insertion flare and the outer diameter of the pipe component. The pipe component is inserted into the pipe component insertion flare, and the pipe component has a groove formed by the at least one protrusion.

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