RECIPROCAL SCREW UNIT FOR THE MOVABLE POSITIVE DISPLACEMENT WORKING CHAMBERS OR FOR USING THE PRESSURE OF A COMPRESSED LIQUID AND/OR GAS WORKING MEDIUM AND A METHOD FOR PRODUCING A SPHERICAL SPIRAL WALL OF THE SPHERICAL SCREW OF THE RECIPROCAL SCREW

摘要

The reciprocal screw unit for movable positive displacement working chambers or for using the pressure of a compressed liquid and/or gas working body relates to propulsion engineering and is an alternative to piston, rotary-piston, vane-type (paddle) and gear pumps, compressors and engines, including centrifugal pumps and internal combustion engines. The reciprocal screw unit for movable working chambers comprises two spherical or flat screws. The spiral wall, which is closed from the longitudinal end face by a bottom with a through hole in the center of one of the screw, is disposed in a spiral groove of the spiral wall from the other longitudinal end face, which wall is closed by the bottom of the other screw. The spiral walls in a diametrically opposite position thereof are offset by deviation in such a way that the spiral space is divided into individual working chambers. During the oscillatory motion of one of the screws along the arc of circle of the circular limit circumference of the bottom, the working chambers are displaceable along the arc of the spiral wall and simultaneously change the volume thereof. This feature of the screws is used for producing mechanical pressure or for using the compression energy of a liquid or gas body. The oscillatory motion along the arc of circle of the circular limit circumference is converted into torque. The method for producing the spherical spiral wall of the spherical screws for a reciprocal screw unit refers to a method for producing the key parts of a particular reciprocal screw unit.