Pivotal direct drive motor for exhaust assembly
First Claim
Patent Images
1. An exhaust assembly which comprises:
- an outer wall that defines a cavity therein having an air inlet formed at its bottom end;
an inner wall fastened to the outer wall and positioned in the cavity to divide it into a centrally located chamber and a surrounding annular space;
a fan chamber disposed at the bottom of the cavity, the fan chamber retaining a fan coupled to a fan shaft to draw exhaust air in through the air inlet and blow it upward through the annular space;
a drive chamber disposed inside the outer wall and adjacent the fan chamber; and
a motor pivotally mounted in the drive chamber, the motor pivotable between a first engaged position in which a motor shaft is coupled to the fan shaft for driving the fan, and a second disengaged pivoted position.
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Accused Products
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.
97 Citations
41 Claims
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1. An exhaust assembly which comprises:
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an outer wall that defines a cavity therein having an air inlet formed at its bottom end;
an inner wall fastened to the outer wall and positioned in the cavity to divide it into a centrally located chamber and a surrounding annular space;
a fan chamber disposed at the bottom of the cavity, the fan chamber retaining a fan coupled to a fan shaft to draw exhaust air in through the air inlet and blow it upward through the annular space;
a drive chamber disposed inside the outer wall and adjacent the fan chamber; and
a motor pivotally mounted in the drive chamber, the motor pivotable between a first engaged position in which a motor shaft is coupled to the fan shaft for driving the fan, and a second disengaged pivoted position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An exhaust assembly mounted onto a roof of a building for removing contaminated air from one or more building exhaust vents, the exhaust assembly comprising:
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an air inlet receiving the contaminated air, at least one ambient air entrainment zone mixing ambient air with the contaminated air to produce diluted air, and an air outlet exhausting the diluted air;
a fan coupled to a fan shaft to draw the contaminated air through the air inlet and blow it towards the air outlet; and
a pivotally mounted motor driving a motor shaft removably coupled to the fan shaft. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. An exhaust assembly which comprises:
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a housing separating a drive chamber from a fan chamber, the housing defining an inlet end and an outlet end;
a motor pivotally mounted in the drive chamber, the motor including a motor shaft;
a fan disposed in the fan chamber and coupled to a fan shaft that is, in turn, coupled to the motor shaft to draw air through the air inlet and blow it towards the outlet, and at least one passageway extending through the housing, the passageway providing access to the motor. - View Dependent Claims (37, 38, 39, 40, 41)
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Specification