| 摘要 |
<p>A device for changing the temperature of a room comprises a refrigerant generator (11-12) with a refrigerant accumulator (12) and a means (13) for circulating the air of the room through the accumulator (12). The refrigerant generator accumulates cold in a medium in the refrigerant accumulator (12) consisting of matter in one phase or in several phase states. By a medium consisting of matter in two phases the refrigerant generator (11-12) transmits part of the medium from liquid phase to solid phase (ice) or gas phase in the refrigerant accumulator (12). The means (13) circulates the air in dependence on presence and absence of a person in the room. A sensor (22) senses the difference in temperature outdoors and indoors and controls the means (13) in dependence on this difference when it runs up to pre-determined amounts. A timer (23) disconnects the refrigerant generator (11-12) when a certain part of liquid has been converted into ice and gas, respectively, when a certain minor part of liquid has been converted into ice and gas, respectively, and, moreover, said means (13) circulates air.</p> |
