| 摘要 |
PROBLEM TO BE SOLVED: To accurately determine a degree of refrigerant deficiency of an air conditioner. SOLUTION: A refrigerant circuit is composed by annularly connecting a constant speed compressor 15, a four-wave valve 16, an outdoor side heat exchanger 17, a pressure reducing expansion valve 18, and an indoor side heat exchanger 19. The degree of refrigerant insufficiency can be determined on the basis of a time ratio of operation and stoppage by providing an indoor blower, operating the indoor blower 20 at a predetermined rotational frequency, and carrying out operation and stoppage control of the constant speed compressor 15 such that a temperature difference between an indoor temperature and a blowout air temperature is between a first predetermined value and a second predetermined value. COPYRIGHT: (C)2006,JPO&NCIPI |
