| 摘要 |
<p>An air conditioner having in a refrigeration cycle a fixed displacement-type first compression mechanism and a variable displacement-type second compression mechanism, and also having second compression mechanism displacement control means, compression mechanism operation switching control means, a vaporizer for a refrigerant, a condenser, a blower, vaporizer temperature detection means, and vaporizer target temperature calculation means. The vaporizer target temperature calculation means has first compression mechanism vaporizer target temperature calculation means for calculating a target temperature for the first compression mechanism and has second compression mechanism vaporizer target temperature calculation means for calculating a target temperature for the second compression mechanism. When the refrigeration cycle is being operated by both compression mechanisms, the displacement of the second compression mechanism is controlled by the second compression mechanism displacement control means by referring a vaporizer temperature detected by the vaporizer temperature detection means and by a second compression mechanism vaporizer target temperature. The air conditioner can achieve required cooling performance as equal as conventional air conditioners can do, and variations in a blowing air temperature, room temperature, etc. can be suppressed by controlling cooling performance finely.</p> |
