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:
Nov. 15, 1994
Filed:
Aug. 24, 1993
Rickey E Wark, Lake Angeles, MI (US);
Sure Alloy Steel Corporation, Warren, MI (US);
Abstract
An inlet venturi for coal-side exhauster fan structure used to deliver pulverized coal to a combustion chamber. Generally, the inlet venturi has an axial length comparable to that of the exhauster fan inlet, resulting in a shallow, smooth transition angle from the venturi to whizzer ring or similar structure for guiding the coal flow into the center of the fan assembly. The inlet venturi includes a back plate or collar portion which prevents eddy effects and pressure drop between the venturi throat and the exhauster fan inlet, and further serves to accurately position the venturi in the exhauster fan inlet. The inventive inlet venturi structure additionally permits the removal of some or all of the 'whizzer' structure commonly used on such fans, resulting in substantial savings in power needed to drive the fan.