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:
Apr. 20, 1999
Filed:
May. 30, 1997
Sue-Li Chuang, Manlius, NY (US);
Srinivasan Subramanian, Liverpool, NY (US);
Carrier Corporation, Syracuse, NY (US);
Abstract
A mixed flow fan and heat exchanger assembly is 'blow through' in that the fan discharges air into the upstream face of the heat exchanger which provides a flow resistance. The fan is mixed flow so that there are both axial and significant radial components to the air flow exiting the fan impeller. The radial components result in a static pressure facilitating flow through the heat exchanger. The assembly includes an impeller having a generally cylindrical hub and a number of backwardly swept blades. The impeller has an outlet swept radius that is greater than its inlet swept radius. A shroud encloses the impeller and guides the air flow into the impeller and to the heat exchanger. The cylindrical hub and a blade apparent solidity of less than one make the fan impeller adaptable to manufacturing in a single piece by a molding process. In a second embodiment there is a downstream blockage and the radial components to the air flow reduce impingement upon the blockage.