Multi-zone air handling systems and methods with variable speed fan
First Claim
1. An air handling system for supplying one or more zones with airflow, the air handling system comprising:
- a cold air damper associated with the one or more zones, the cold air damper movable between an open position and a closed position;
a hot air damper associated with the one or more zones, the hot air damper movable between an open position and a closed position;
a fan positioned upstream of the cold air damper and the hot air damper, the fan configured to operate at varying speeds to generate the airflow for the one or more zones; and
a controller configured to modulate the speed of the fan to maintain the cold air damper in an approximately fully open position or an approximately fully closed position.
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Accused Products
Abstract
An air handling system for supplying one or more zones with airflow. The air handling system generally includes a cold air damper, a hot air damper, a fan, and a controller. The cold air damper is associated with the one or more zones, and is movable between an open position and a closed position. The hot air damper is also associated with the one or more zones, and is movable between an open position and a closed position. The fan is positioned upstream of the cold air damper and the hot air damper and operates at varying speeds to generate the airflow for the one or more zones. The controller modulates the speed of the fan to maintain the cold air damper in an approximately fully open position or an approximately fully closed position.
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Citations
20 Claims
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1. An air handling system for supplying one or more zones with airflow, the air handling system comprising:
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a cold air damper associated with the one or more zones, the cold air damper movable between an open position and a closed position;
a hot air damper associated with the one or more zones, the hot air damper movable between an open position and a closed position;
a fan positioned upstream of the cold air damper and the hot air damper, the fan configured to operate at varying speeds to generate the airflow for the one or more zones; and
a controller configured to modulate the speed of the fan to maintain the cold air damper in an approximately fully open position or an approximately fully closed position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of supplying one or more zones with airflow, the method comprising:
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generating airflow with a variable speed fan;
routing the generated airflow to a cold air pathway and a hot air pathway, the cold air pathway including a cold air damper movable between an approximately fully open position and an approximately fully closed position, the hot air pathway including a hot air damper movable between an open position and a closed position; and
modulating the speed of the fan to maintain the cold air damper in one of the approximately fully open position and the approximately fully closed position. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An air handling system configured to supply airflow to one or more zones, each zone having an associated cold air damper and an associated hot air damper, the air handling system comprising:
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a variable speed drive configured to turn a fan to generate the airflow for the one or more zones; and
a controller configured to modulate the speed at which the variable speed drive turns the fan based at least partially on a temperature of the one or more zones, and further configured to maintain the cold air damper in an approximately fully open position or an approximately fully closed position. - View Dependent Claims (18, 19, 20)
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Specification