REGULATION DEVICE FOR STREAMING OF REFRIGERATING AGENTS FOR EVAPORATION OF REFRIGERATING FACILITIES OR HEAT PUMPS, AS WELL AS EXPANSION VALVES PLACED IN STREAMS OF REFRIGERATING AGENTS.

摘要

The seat (87) has a bore, into which the closing member (84) projects with a cylindrical region (88), the diameter of which is slightly smaller than the diameter of the bore in the seat (87). As a result, the throttle effect with the valve partially opened is increased and easily controllable. Additionally or alternatively, there is arranged between servomotor (4) and closing member (84) a differential screw gear (50', 51, 50'', 52) in order to ensure a sensitive control of the closing member (84). IMAGE