The present invention relates to a method for alleviating a short-term "cold blow" effect in a heat pump heating system. According to a method of the invention, reversing of a system valve in response to the sensing of a defrost condition is delayed by a predetermined time. The amount of this delay time depends upon the amount of time required for a supplementary heating unit to achieve an output sufficient to offset the cooling effect resulting from there being a cold indoor coil.
申请公布号
US5758507(A)
申请公布日期
1998.06.02
申请号
US19960695403
申请日期
1996.08.12
申请人
SCHUSTER, DON A.;LIANG, HONG MEI;SULLIVAN, LOUIS J.
发明人
SCHUSTER, DON A.;LIANG, HONG MEI;SULLIVAN, LOUIS J.