Patent ID: 8011199
Filing Date: 2011-09-06
Classification: F24F,F25B,G05D,Y02B

Abstract:
1. A method of controlling an air conditioning unit to reduce the use of electricity while maintaining space temperature within a desired range, the method comprising in the following order at least the acts of: receiving an on-signal from a thermostat located within the space; operating the unit at an operating speed wherein the act of operating the unit includes running a compressor motor driving a compressor at a compressor speed, running an evaporator fan motor at a blower speed, the evaporator fan motor driving an evaporator fan that moves indoor air through an evaporator and to the space, and running a condenser fan motor at a condenser fan speed, the condenser fan motor driving a condenser fan that moves outdoor air through a condenser; measuring how long the unit operates; if the unit operates for longer than a predetermined maximum desired operating time, and if the unit is not already operating at a maximum operating speed, increasing the operating speed, wherein the act of increasing the operating speed includes increasing the compressor speed; receiving an off-signal from the thermostat located within the space; after receiving the off-signal, stopping operation of the unit, wherein the act of stopping operation of the unit marks an end to an operating cycle having a final compressor speed at the time the off-signal is received, and wherein the act of stopping operation includes turning off the compressor motor, turning off the evaporator fan motor, and turning off the condenser fan motor; receiving an on-signal from the thermostat located within the space; operating the unit at the operating speed wherein: returning to the act above of measuring how long the unit operates, and repeating that act and the acts that follow.