Radial rotary piston machine

Abstract

A radial rotary piston machine comprising a frame ( 1 ), at least one opening ( 13 ) for inlet of a medium into the machine and at least one opening ( 14 ) for discharge of a medium out of the machine, where the frame ( 1 ) comprises end plates ( 11 ) between which a rotor ( 2 ) is placed, this rotor ( 2 ) comprises axial opening ( 21 ) for a shaft ( 5 ) of the machine and further comprises at least two angularly offset piston chambers ( 22 ) transversely to the rotor axis, the shaft ( 5 ) of the machine extends through the axial opening ( 21 ) in the rotor ( 2 ) and is mounted in bearings in the end plates ( 11 ) of the frame ( 1 ), circular cams ( 51 ) are arranged on the shaft ( 5 ), the shaft ( 5 ) being positioned eccentrically to the rotor ( 2 ), each piston ( 4 ) is arranged for reciprocal movement in the chamber ( 22 ) and mounted rotatively on the circular cam ( 51 ), where the chamber ( 22 ) ends are closed by heads ( 3 ), the head ( 3 ) or the rotor ( 2 ) comprise at least one passage ( 32 ) for inlet and discharge of a medium from the chamber ( 22 ), which are opened and closed by valve means, where the head ( 3 ) and/or the rotor ( 2 ) comprise at least one passage ( 32 ) for inlet and discharge of a medium to and from the piston chamber ( 22 ) leading on one end in axial direction to the end plate ( 11 ) of the frame ( 1 ), and which is opened and closed at its axial opening by valve means in the form of separate arcuate slots ( 61 ).

1 . A radial rotary piston machine comprising a frame, at least one opening for inlet of a medium into the machine and at least one opening for discharge of a medium out of the machine, where the frame comprises end plates between which a rotor is placed, this rotor comprises axial opening for a shaft of the machine and further comprises at least two angularly offset piston chambers transversely to the rotor axis, the shaft of the machine extends through the axial opening in the rotor and is mounted in bearings in the end plates of the frame, circular cams are arranged on the shaft, the shaft being positioned eccentrically to the rotor, where the eccentricity of the axis of rotation of the shaft from the axis of the rotor is equal to the eccentricity of the axis of the circular cam from the axis of rotation of the shaft, each piston is arranged for reciprocal movement in the piston chamber in the rotor and mounted rotatively on the circular cam on the shaft, where the piston chamber ends are closed by heads, the head or the rotor comprise at least one passage for inlet and discharge of a medium from the piston chamber, which are opened and closed by valve means where the head and/or the rotor comprise at least one passage for inlet and discharge of a medium to and from the piston chamber leading on one end in axial direction to the end plate of the frame, and which is opened and closed at its axial opening by valve means in the form of separate arcuate slots. 
     
     
         2 . The radial rotary piston machine according to  claim 1 , wherein the piston chamber is provided with an insert, and this insert is connected with the head of the piston chamber. 
     
     
         3 . The radial rotary piston machine according to  claim 2 , where the insert extends along the piston chamber to the proximity of the shaft of the machine. 
     
     
         4 . The radial rotary piston machine according to  claim 1 , where the separate arcuate slots are provided in a valve plate positioned between the rotor end and the end plate of the frame. 
     
     
         5 . The radial rotary piston machine according to  claim 1 , wherein the rotor end is provided by a slide sealing plate with an aperture for passage of a medium to and from the passage in the head and/or rotor. 
     
     
         6 . The radial rotary piston machine according to  claim 1 , wherein the piston is provided at each of its ends by a piston ring. 
     
     
         7 . The radial rotary piston machine according to  claim 6 , wherein the piston ring is jointless, where the piston end is provided removable for insertion of this jointless piston ring.