| 摘要 |
PURPOSE:To improve a start up performance when a heating operation is started as well as a performance of defrosting operation by a method wherein material capable of setting a melting temperature of a latent heat accumulative material thermally contacting with a compressor slightly lower than a temperature of the compressor when a heating operation is stabilized is used and the material is melted when the heating operation is stabilized to store heat, a latent heat is released when the operation is stopped so as to prevent a temperature of the compressor from being decreased. CONSTITUTION:As a melting temperature of a latent heat accumulation material 7 thermally contacted with a compressor 1 is selected to have a temperature slightly lower than that of a compressor 1 when a heating operation is stabilized, the latent heat accumulation material 7 is melted to keep the heat accumulated state when the heating operation is stabilized. When the heating operation is stopped, the compressor 1 is prohibited from being decreased at its temperature due to a release of condensing latent heat of the latent heat accumulation material 7 and the temperature of the compressor 1 is higher than a surrounding atmosphere temperature when the next heating operation is started and the compressor 1 is started at that higher temperature, so that a perforamnce of the compresor when the heating operation is started is improved. In addition to a thermal capacity of the compressor 1, a soldifying latent heat of the latent heat accumulation material 7 can be utilized, so that it is possible to shorten a defrosting time. |
