Condition and volume control for air conditioning system mixing dampers
AssigneeHoneywell Inc.
InventorDonald H. Spethmann
Life of this patent
Estimating the term…
Abstract
In an air conditioning system wherein the outdoor air and recirculated air mixing dampers are operated to control the volume and condition, such as temperature, of the mixture of outdoor air and return air to be discharged to at least one zone, a control apparatus is disclosed having sensors for sensing the condition and volume of the mixture and a control system responsive to the sensors for controlling the operation of the outdoor air and recirculated air dampers for maintaining a predetermined condition and a predetermined volume of the mixture. In addition, an exhaust air damper may also be provided, controlled by the control system, for regulating the amount of air returned for the system.
Claims20
In an air conditioning system for supplying a volume of conditioned air to at least one zone, said system having a source of outdoor air and an outdoor air damper and a source of recirculated air and a recirculated air damper and discharge means for discharging a mixture of recirculated air and outdoor air to said at least one zone, a control apparatus adapted to control the condition and volume of air discharged by said discharge means comprising:
- first actuating means adapted to operate said outdoor air damper;
- second actuating means adapted to operate said recirculated air damper;
- sensing means for sensing said condition and volume of said mixture of recirculated air and outdoor air;
- and,
- control system means responsive to said sensing means and connected to said first and second actuating means for controlling the operation of said outdoor air and recirculated air dampers in an opposite sense to maintain a predetermined condition of said mixture of outdoor air and recirculated air and in the same sense to maintain a predetermined volume of said mixture of said outdoor air and said recirculated air to be discharged by said discharge means.
In an air conditioning system for supplying a volume of conditioned air to at least one zone, said system having a source of outdoor air and outdoor air damper means, a source of recirculated air and recirculated air damper means, and a source of exhaust air and exhaust air damper means, and discharge means for discharging a mixture of recirculated air and outdoor air to said at least one zone, a control apparatus adapted to control the condition and volume of said mixture of recirculated air and outdoor air which is discharged by said discharge means to said at least one zone comprising:
- first actuating means adapted to operate said outdoor air damper means;
- second actuating means adapted to operate said recirculated air damper means;
- third actuating means adapted to operate said exhaust air damper means;
- sensing means for sensing the condition and volume of said mixture of outdoor air and recirculated air;
- and,
- control means responsive to said sensing means and connected to said first, second and third actuating means for controlling the operation of said outdoor air, recirculated air and exhaust air damper means such that said outdoor air and recirculated air damper means are controlled in an opposite sense to maintain a predetermined condition of said mixture of outdoor air and recirculated air and in the same sense to maintain a predetermined volume of said mixture of outdoor air and recirculated air which is discharged by said discharge means.
Dependencies are inferred from the claim text.