| 摘要 |
<p>The refrigerator unit of compression type to obtain cold as cold gas or cold liquid agent includes compressor, throttle or expander and heat exchangers. To pump ammonia or carbon dioxide, there are installed contactless (without oil) rotor-piston compressor and decompressor, each of those includes synchronized rotors - the power one with a tooth-piston, and the supplementary one, closing, with socket matched to the tooth-piston, those are placed in the housing at mutually intersecting shafts, and part of being in contact surfaces of which is made with common center of rotation, and the other part of those surfaces is flat or conical, they areplaced equidistantly and form an elongated slot gland, 0.05-0.01 mm in height.</p> |
