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.:
Date of Patent:
Nov. 28, 2023
Filed:
Mar. 25, 2020
Fujitsu General Limited, Kanagawa, JP;
Daiki Shimano, Kanagawa, JP;
Ryo Takaoka, Kanagawa, JP;
Masatoshi Watanabe, Kanagawa, JP;
Yoshinari Maema, Kanagawa, JP;
Shohei Nakata, Kanagawa, JP;
Kotaro Oka, Kanagawa, JP;
FUJITSU GENERAL LIMITED, Kanagawa, JP;
Abstract
A heat exchanger includes: a plurality of flat tubes that are stacked in a direction perpendicular to a refrigerant flow direction, and a plurality of fins that have a first flat tube insertion portion into which a first flat tube among the plurality of flat tubes is inserted, and a second flat tube insertion portion into which a second flat tube adjacent to the first flat tube is inserted. A first fin has, formed on the inner periphery of the first flat tube insertion portion, a cut and raised piece for spacing a fin pitch between the first fin and an adjacent second fin. The cut and raised piece has a raised portion of the same length as the fin pitch, and a folded portion that is folded back at the tip of the raised portion and that is in contact with the second fin.