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:
Sep. 19, 2017
Filed:
Apr. 03, 2014
Panasonic Intellectual Property Management Co., Ltd., Osaka-shi, Osaka, JP;
Abstract
It is aimed to reduce the size of heat exchange tubes and also to reduce pressure loss of a fluid flowing in an external flow path formed between adjacent heat exchange tubes. A first projecting portionand a second projecting portionof a first heat exchange tubeA are joined to portions around an inletC and outletD of a second heat exchange tubeB. A first flow path forming portion, a second flow path forming portion, and a third flow path forming portionof an internal flow pathof each of the first heat exchange tubeA and the second heat exchange tubeB face a first thin portionA and a second thin portionB of the second heat exchange tubeB or the first heat exchange tubeA across an external flow path. The first flow path forming portions, the second flow path forming portions, and the third flow path forming portionsof the first heat exchange tubeA and the second heat exchange tubeB are arranged in a staggered pattern in a width direction of the heat exchange tubes