| 摘要 |
<P>PROBLEM TO BE SOLVED: To quickly stabilize heating operation into an efficient operating state when starting the heating operation. <P>SOLUTION: A control device 70 applies an outside air temperature detected by an outside air temperature sensor 40b, and an inflow temperature detected by an inflow temperature sensor 51 to an optimum opening storage means 71 to lead out an optimum opening when starting the heating operation, and starts normal feedback control after driving the throttle opening of a variable expansion valve 30 or a variable ejector 80 to the led-out optimum opening. In a heat pump type heating device controlling a refrigerant flow by a pressure reducing device such as the variable expansion valve 30 or the variable ejector 80, both the outside air temperature and the inflow temperature of a heated fluid are detected when starting the heating operation, to determine the optimum throttle opening of the pressure reducing device under the condition, and after driving the pressure reducing device to the throttle opening, normal control is performed to stabilize the heating operation into the efficient operating state in a short time. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
