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. 16, 2003
Filed:
Apr. 26, 2002
Yoshimasa Kikuchi, Sakai, JP;
Yoshinori Narikawa, Sakai, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A suction and exhaust device wherein air is supplied as air curtain flow through air outlet ( ) while the air surrounded by the air curtain flow is sucked through suction ports ( ) to be exhausted. A supply space in the device is divided into two chambers, upper and lower, by a partition plate ( ): a first supply air space ( ) on the upper side into which air from the supply air duct ( ) is introduced and a second supply air space ( ) which spreads in the direction of the air outlet ( ). The first and second supply air spaces ( ) are communicated with each other through annular flow equalizing channel ( R, R) of small channel diameter vertically extending in the outer periphery of the suction duct ( ). This uniformalizes the flow rate distribution of the supply air flow from the air outlet and forms a stabilized air curtain flow.