| 摘要 |
FIELD: refrigerating engineering, in particular, devices, in which gases are used as the working medium. ^ SUBSTANCE: the device for cooling of bodies has at least one stage including a channel for circulation of the gaseous working medium, propeller providing circulation of the working medium in the channel, engine actuating the propeller, as well as a power source for propeller operation, and a heat-insulated container for the cooled agent. The channel for circulation of the working medium is made with a constricted section, whose cross-section area is smaller than the cross-section area of the rest section of the channel for reduction of the temperature of the working medium at a forced propagation of it trough the constricted section of the channel, and the walls are made of a heat-conducting material for reduction of the temperature of the cooled agent, tightly adjoining the walls of the constricted section of the channel and having a higher temperature as compared with the constricted section of the channel. ^ EFFECT: simplified manufacture and operation of the device, reduced power consumption. ^ 2 cl, 1 dwg |
