Free piston type torsion drive compressor

Abstract

The invention relates to a free piston type compressor 10 according to the invention comprises a first free piston 2 a and a second free piston 2 b interconnected by a torsion body 3 a and 3 b, and elastic bending element 4 a and 4 b to the central electromotor 5. In accordance with the invention the driving force is applied transversely to the direction of the expected displacement D of the first free piston and the second free piston.

1 . A free piston type compressor comprising a first piston and a second piston interconnected with a torsion body and elastic bending elements, said first piston and said second piston being driven by a first motor and a second motor by applying force in opposite circumferential directions, so that in use the first piston and second piston displace along a displacement direction wherein the said motors drive the first piston and the second piston in the circumferential direction transversal to the displacement direction. 
     
     
         2 . The compressor according to  claim 1 , having an integrated motor, where the torsion body comprises a central torsion rod encircled by a set of elastic rods for controlling the displacement. 
     
     
         3 . The compressor according to  claim 1 , with a centrally positioned integrated motor wherein each piston is connected with its own set of torsion bar and elastic bending elements. 
     
     
         4 . The compressor according to  claim 1 , wherein the first motor and the second motor are adapted to rotate with substantially the same frequency having opposite phases. 
     
     
         5 . The compressor according to  claim 1 , wherein the rotors of the respective motors are integrated with the respective free pistons. 
     
     
         6 . The compressor according to  claim 1 , wherein the torsion body is adapted to undergo an elastic deformation. 
     
     
         7 . An air conditioning system comprising a free piston type compressor according to  claim 1 . 
     
     
         8 . A heat or liquid pump comprising a free piston type compressor according to  claim 1 . 
     
     
         9 . The compressor according to  claim 3 , where in operation, the motor moves in an opposite phase than both pistons.