Rotary machine to compression or expansion of a fluid, and its applications, in particular, in a refrigerator

摘要

860,668. Rotary motors. SVENSKA ROTOR MASKINER A.B. Feb. 27, 1959 [Feb. 27, 1958], No. 6869/59. Class 110 (2). In a rotary motor of the intermeshing screwtype the inlet 18 between the rotors is controlled by an axially adjustable spring-loaded slide 40 journalled on a fixed pin 44. The slide is moved by a rod 50, 60 in accordance with ambient pressure and has a ring 62 loosely engaging the cylinder. 54 so that the same pressure prevails on either side thereof. Each rotor is provided with a synchronizing gearwheel 32 and the male rotor spindle carries a braking fan 38.