Patent
Delayed action dampers for air terminal units
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TLDR
In this article, the dampers are mechanically linked in a unique way so that the hot air damper will not begin to open until the cold air Damper is partially closed.Abstract:
An air damper arrangement for a terminal unit that has separate positionable dampers located in the unit to provide for automatic air mixing in response to temperature requirements. In double duct systems, the dampers are mechanically linked in a unique way so that the hot air damper will not begin to open until the cold air damper is partially closed. In this manner, the cold air volume is reduced to a minimum quantity before the hot air is permitted to mixin the terminal unit. Another embodiment utilizes this linkage concept with terminal reheat bypass units to selectively control the dampers associated with the terminal unit heating coil thereby decreasing the volume of air bypassing the coil prior to utilization of same.read more
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System and method for controlling the conditioning and delivery of air to a conditioned space
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Allen P Crombie,Roy M Steege +1 more
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A device for controlling and closing gas flows
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Air mixing device for air conditioning systems
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Multiple valve control
TL;DR: In this article, the authors proposed a method to operate one valve in accordance with the positioning of the other valve and to provide an indication as to such joint operation, where one or more fluid streams are controlled by multiple valves.