| 摘要 |
PURPOSE:To rapidly stabilize a cycle at starting time and to enlarge an operation range during overload by a method wherein a specified output lower than that in a range of an ordinary combustion output is set and when an inlet refrigerant temperature enters a transient temperature range, operation is performed at a specified combustion output without stopping combustion. CONSTITUTION:Detecting temperatures from an outlet refrigerant temperature sensor 29 and a condensation temperature sensor 28 are inputted to a control means and by outputting an operation output to a proportional control valve 26, combustion of the burner 24 of a refrigerant heater 8 is controlled. In this case, a specified combustion output lower than an output in an ordinary operation output range is set by a control means and during transition of the temperature of the condensation temperature sensor 28, a combustion amount of a burner 24 is controlled by the combustion specified output. This constitution rapidly stabilizes a cycle during the starting of operation, especially during a low temperature rise and stabilizes a cycle without stopping a compressor 1 since an output is switched to a specified combustion output by a condensation temperature during overload running. |
