Patent ID: 8371822
Filing Date: 2013-02-12
Classification: F04D,Y02E,Y10T

Abstract:
1. An air conditioning system having a dual-powered airflow generator, comprising: a heat exchanger; a variable speed fan motor powered from an alternating current (AC), primary power source and having a first drive shaft and a fan coupled thereto, wherein operation of said variable speed fan motor causes a desired airflow at a design power toward said heat exchanger; an auxiliary fan motor powered from a secondary, direct current (DC) power source and having a second drive shaft mechanically coupled to said variable speed fan motor to assist said variable speed fan motor in causing said desired airflow toward said heat exchanger; and a microcontroller coupled to said variable speed fan motor and configured to sense a speed of said first drive shaft and apply or reduce said AC primary power source to said variable speed fan motor so that a speed of said fan remains constant when a power flow to said auxiliary fan motor from said DC power source is reduced.