| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a freezer capable of suitably adjusting the pressure and flow rate of a refrigerant when keeping a cooling temperature constant. <P>SOLUTION: In a freezer 1, the pressure and flow rate of the refrigerant passing through a Joule-Thomson valve 14 are adjusted by using Joule-Thomson compressors 12, 13 by arranging, to the freezer, a return pipe L5, an executor 18 and an executor compressor 19, and on the other hand, independently from the adjustment, the pressure and flow rate of the refrigerant in the return pipe L5 passing through the executor 18 are adjusted by the executor compressor 19. By this arrangement, both a cooling capacity and the cooling temperature can freely be adjusted, and accordingly, the pressure and flow rate of the refrigerant can suitably be adjusted when keeping the cooling temperature constant. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
