Heat exchange – Movable heating or cooling surface – Rotary drum
Patent
1987-04-17
1989-04-11
Davis, Jr., Albert W.
Heat exchange
Movable heating or cooling surface
Rotary drum
165 22, 165 30, 165 25, 236 491, 236 44C, 236 1B, F24F 300, F24F 700
Patent
active
048197165
ABSTRACT:
The advanced zone damper incorporates an adjustable, spring loaded damper door control which allows any percentage up to 50% of the total air flow to pass through a locked damper door when only two dampers are used in a multizone heating and cooling system. The stated percentage is relative to when two dampers are used, and may vary greatly with system design and the number of dampers and zones in the system. A humidistat and manual control over system functions is also a great improvement over the thermostat control only. Often in a two or more zone system, where the air conditioner is large enough for the building, there may be humidity control problems in any zone which the present invention's controls compensate for by damper doors being unlocked simultaneously while the air conditioner and the heater may both be operating simultaneously so that humidity is removed by the air conditioner while cooling, and heat is added by the heater. This process removes humidity but may not change the air temperature. Also the mechanical damper door control may be adjusted to help reduce over cooling and loss of humidity control.
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patent: 4673029 (1987-06-01), Beachboard
Air Pressure Dumper Damper, publication of Zone-A-Trol.
Davis Jr. Albert W.
Ford John K.
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