| 摘要 |
PROBLEM TO BE SOLVED: To reduce defrosting time, by calculating time until defrosting operation (or heating operation) is started for both of compressor non-stop and stop systems for comparison, and by selecting faster control algorithm. SOLUTION: An air conditioner composes a refrigeration cycle for successively communicating with a compressor 1, a four-way valve 2, an indoor heat exchanger 3, a capillary tube 4, and an outdoor heat exchanger 5, and has a control means 11 for starting defrosting operation (or heating operation) by determining defrosting operation conditions (or defrosting ending conditions). The defrosting control unit of the air conditioner comprises a determination section for determining defrosting operation conditions (or defrosting ending conditions) in the control means; a computation section for calculating time until defrosting is started (or heating returns) from the operating frequency, or the like of the compressor at that time for both of compressor stop and non-stop systems; and a comparison section for switching to defrosting operation (or heating operation) in a shorter system by comparing the computation result. COPYRIGHT: (C)2006,JPO&NCIPI |
