Fresh air flor modulation device
First Claim
Patent Images
1. A device for monitoring and modulating the admission of fresh air into a building, the device comprising:
- a housing;
a sensor, associated with the housing and operable to measure airflow through the housing; and
a damper including at least two damper blades wherein each damper blade is substantially planar with a first substantially straight edge and a second curved edge;
wherein each damper blade includes a shaft rotatably attached to the housing at least at a first shaft end;
wherein the shaft is located on a surface of the damper blade so as to divide the surface into first and second substantially equal areas; and
wherein the shaft is not located on the surface at the midpoint of a perpendicular line taken from the midpoint of the first straight edge.
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Accused Products
Abstract
A device for monitoring and modulating the admission of fresh air into a building. The device comprises a housing; a sensor associated with the housing and operable to measure airflow through the housing; and a damper including at least two damper blades. Each damper blade includes a shaft rotatably attached to the housing at least at a first shaft end. The shaft is located on the surface of the damper blade so as to divide the surface into first and second substantially equal areas.
63 Citations
14 Claims
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1. A device for monitoring and modulating the admission of fresh air into a building, the device comprising:
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a housing; a sensor, associated with the housing and operable to measure airflow through the housing; and a damper including at least two damper blades wherein each damper blade is substantially planar with a first substantially straight edge and a second curved edge; wherein each damper blade includes a shaft rotatably attached to the housing at least at a first shaft end; wherein the shaft is located on a surface of the damper blade so as to divide the surface into first and second substantially equal areas; and wherein the shaft is not located on the surface at the midpoint of a perpendicular line taken from the midpoint of the first straight edge. - View Dependent Claims (2, 3, 4, 12, 13, 14)
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5. An airflow modulation device comprising a housing, the housing supporting:
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a flow ring; a first damper blade; a second damper blade; wherein each of the first and second damper blades includes a first edge which is substantially straight, and a second edge which is substantially arced, a shaft being attached to each damper blade in the plane of the damper blade, the shaft being movably attached to the housing and located so as to divide the surface of the damper blade into first and second surfaces where the area of the first surface is substantially identical to the area of the second surface; and wherein the shaft is not located on the damper blade surface at the midpoint of a perpendicular line taken from the midpoint of the straight edge.
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6. A flow modulation device comprising:
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a housing; at least a pair of damper blades each damper blade moveably supported within the housing by a shaft rotationally associated with the housing at a first shaft end; and a flow ring sensor mounted within the housing and operable to measure airflow through the housing; wherein each damper blade has a semicircular shape which is separated by the shaft into two regions of approximately equal area each damper blade having a straight edge and a curved edge, the shaft being located parallel to the straight edge but not at the midpoint of a perpendicular line taken from the midpoint of the straight edge. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification