Patent ID: 7784293
Filing Date: 2010-08-31
Classification: F24F,Y02B

Abstract:
1. An air handling system for heating and/or cooling a room, the system comprising: a user interface for transmitting a sleep mode signal upon activation of a sleep mode by a user; a climate control unit for heating and/or cooling air to be transported from the climate control unit to the room, the climate control unit comprising a motor comprising a single main stator winding for driving a fan; and a control unit for controlling the climate control unit to gradually change an ambient temperature in the room over a predetermined period of time in response to the sleep mode signal transmitted by the user interface, wherein the control unit incrementally adjusts a set temperature of the air handling system in a plurality of increments toward a target sleep temperature, each of the increments having a predetermined duration, and modulates an electric power signal in response to an operator input instruction to be delivered to the single main stator winding for providing substantially-continuous adjustment of a speed of the fan from a first fan speed to a second fan speed that is different from the first fan speed to control the gradual change of the ambient temperature in the room, wherein substantially-continuous adjustment of the speed of the fan comprises substantially-infinitely adjusting the speed to any desired speed between predetermined upper and lower speed limits.