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:
Oct. 04, 2016
Filed:
Apr. 23, 2013
Sangmu Lee, Tokyo, JP;
Takuya Matsuda, Tokyo, JP;
Akira Ishibashi, Tokyo, JP;
Takashi Okazaki, Tokyo, JP;
Sangmu Lee, Tokyo, JP;
Takuya Matsuda, Tokyo, JP;
Akira Ishibashi, Tokyo, JP;
Takashi Okazaki, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A plate fin includes a slit structure formed by cutting and raising a portion of the plate fin to form an opening facing a flow direction of a fluid and a waffle structure formed by bending a portion of the plate fin to form a protrusion having an angle-shaped cross section which protrudes in a stack direction and having a ridge substantially perpendicular to the air flow direction, and the waffle structure is disposed on the upstream side on the plate fins with respect to the slit structure and a slant length Lon the upstream side of the waffle structure is smaller than a slant length Lon the downstream side of the waffle structure.