LIMITED LOSS LAMINAR FLOW DAMPERS FOR HEATING, VENTILATION, AND AIR CONDITIONING (HVAC) SYSTEMS
First Claim
1. A damper assembly for use in a heating, ventilation, and air conditioning (HVAC) system, the assembly comprising:
- a casing having an inlet and an outflow with a flow direction extending therebetween;
a first damper member movably disposed within the casing; and
a second damper member movably disposed within the casing;
the damper members having cross-sections and movable between an open flow configuration and a restricted flow configuration such that laminar flow is maintained as the flow is restricted.
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Accused Products
Abstract
HVAC devices, systems, and methods include dampers for controlling the flow of air or other gasses through an HVAC duct, often while inhibiting turbulence within the duct or pressure loss within the duct. Embodiments of such dampers may employ a two-part damper arrangement. In many embodiments, flow will travel through the middle of the damper uniformly and with a laminar flow. One or more small, relatively unobtrusive sensor (optionally being wireless) can be included for controlling operation of the damper, the sensor(s) optionally measuring the distance between damper elements, sound, air flow, or the like, with such sensor(s)/damper combination inhibiting inadvertent pressure drop and turbulence in flows through the damper. The damper elements may optionally comprise airfoil cross-sections, with alternative dampers having a resilient helical configuration that can choke down flow by inducing a vortex in the flow, allowing static pressure regain to occur within the duct system.
50 Citations
20 Claims
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1. A damper assembly for use in a heating, ventilation, and air conditioning (HVAC) system, the assembly comprising:
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a casing having an inlet and an outflow with a flow direction extending therebetween;
a first damper member movably disposed within the casing; and
a second damper member movably disposed within the casing;
the damper members having cross-sections and movable between an open flow configuration and a restricted flow configuration such that laminar flow is maintained as the flow is restricted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A damper assembly for use in a heating, ventilation, and air conditioning (HVAC) system, the assembly comprising:
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a casing having an inlet and an outflow with a flow direction extending therebetween; and
a damper member disposed within the casing, the damper member comprising a helical body deformable between an open flow configuration and a restricted flow configuration. - View Dependent Claims (10)
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11. A method of controlling a fluid flow in a heating, ventilation, and air conditioning (HVAC) system, comprising:
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flowing a fluid through a casing inlet toward a casing outlet;
flowing the fluid across a plurality of damper members disposed within the casing;
restricting an amount of the fluid passing through the casing by actuating a first damper member; and
maintaining a laminar flow within the fluid during the actuation of the first damper member. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification