Air conditioning system

Claim 1

An air conditioning system for supplying treated air to an enclosure, comprising: A. a heat exchanger; B. means to supply heat exchange medium to said exchanger; C. a fan arranged to pass air to be treated over said heat exchanger in heat transfer relation with said heat exchange medium; D. a motor arranged to drive said fan, said motor being adapted to be connected to a source of energy; E. means responsive to temperature in the treated enclosure to vary the speed of said fan motor to regulate the quantity of air being delivered by said fan; F. means to supply the treated air in a single stream from the heat exchanger through an outlet to the enclosure, the pressure in said air supply means being a function of the quantity of the air supplied thereto; G. means operable to regulate the supply of treated air discharged in a single stream through the outlet into the enclosure from said supply means, said heat exchanger being disposed in said air supply means between said fan and said regulating means, said regulating means being responsive to the pressure in said supply means, said regulating means being operable to maintain the discharge of the single stream of treated air at a pre-determined velocity irrespective of variations of pressure in said supply means, said regulating means comprising a single damper blade mounted adjacent the outlet responsive to the pressure of the treated air in said air supply means to discharge the single stream of treated air into the treated enclosure; and H. biasing means connected to said damper blade to move said damper blade in a direction opposite to the direction said damper blade is moved by the force created by said pressure in said supply means.