Pivotal direct drive motor for exhaust assembly

a direct drive, exhaust technology, applied in the direction of lighting and heating apparatus, ventilation systems, heating types, etc., can solve the problems of difficult maintenance, inability to adapt to meet a wide range of performance specifications, and high cost of building exhaust stacks
US20050159101A1Inactive Publication Date: 2005-07-21GREENHECK FAN
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Patent Information

Authority / Receiving Office
US Β· United States
Patent Type
Applications(United States)
Current Assignee / Owner
GREENHECK FAN
Publication Date
2005-07-21
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

An exhaust assembly is provided for expelling contaminated air from a building. The assembly includes a plenum, a fan assembly attached to the plenum, and a windband mounted on top of the fan assembly. The fan assembly is constructed of cylindrical outer and inner walls which define a drive chamber and surrounding annular space. A fan driven by a motor whose shaft extends downward from the drive chamber draws exhaust air from the plenum and blows it up through the annular space to a nozzle at the top of the fan assembly. The motor is pivotally mounted inside the assembly to provide access to the motor components when it is desired to perform inspection and maintenance.
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Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This claims the benefit of U.S. Provisional Patent Application No. 60 / 537,609 filed Jan. 20, 2004 and further claims the benefit of U.S. Provisional Patent Application No. 60 / 558,074 filed Jul. 15, 2004, the disclosure of each of which is hereby incorporated by reference as if set forth in their entirety herein.BACKGROUND OF THE INVENTION

[0002] The present invention relates generally to exhaust fans, and more particularly to exhaust fans of the type that draw contaminated air from one or more fume hoods dispersed throughout a building, mix the contaminated air with ambient air to dilute the contaminants, and vent the diluted air from the building into the ambient environment.

[0003] There are many different types of exhaust systems for buildings. In most of these the objective is to simply draw air from inside the building in an efficient manner. In building such as laboratories, fumes are produced by chemical and biological processes,...

Claims

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