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. 11, 2018
Filed:
Oct. 14, 2015
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Abstract
A fin satisfies 0°<θ<tan[(L±α)/{(S−D)/2−L/tanθ}], where Sis a distance between an upstream end and a downstream end of a first inclined portion, Dis a distance between an upstream end and a downstream end of a flat portion, θis an angle between a reference plane and the first inclined portion in the flow direction, θis an angle between the reference plane and the second inclined portion in the flow direction, α is a distance between the reference plane and the flat portion, and L is a distance between the reference planes of the fins adjacent to each other. θgradually decreases as a measurement direction of the angle is shifted from the row direction to the air flow direction and is minimum when the measurement direction is orientated in the air flow direction.