HEAT-RECOVERY COMPRESSOR Russian patent published in 2013 - IPC F04B19/24 

FIELD: machine building.

SUBSTANCE: device includes cylinder 1, displacer 2 with built-in generator 3 and radially inclined holes 4 and 5 for connecting regenerator to cold 6 and hot 7 cylinder 1 cavities correspondingly. Displacer 2 is activated by electric drive with rotor 8 located on external side of displacer 2 and stator 9 located on cylinder 1. At the external near-end areas of displacer 2 there are threaded areas 16, and at the internal surface of near-end areas of cylinder 1 - threaded areas 17, with formation of annular gaps 18. The cylinder 1 contains heat-exchanger of heat medium 11 with heat insulation 12, heat-exchanger of cooling medium 10, gas manifold 13 with inlet 14 and outlet 15 valves, finned heat-exchanger 19. Pneumatic springs of dynamic "spring loading" of displacer 2 are made in a form of plunger cylinders 22 and 23, mounted in its front plugs 20 and 21, that response to plunger pistons 24 and 25 that are rigidly installed inside cold 6 and hot 7 cavities on cylinder 1 covers of heat-recovery compressor. Plunger pistons 24 and 25 are hollow and are opened correspondingly from the side of cold 6 and hot 7 cavities for cold and hot heat medium access. Working body of pneumatic springs is gas pumped by heat-recovery compressor.

EFFECT: increase of device efficiency by increase of heat-exchange surfaces in cold and hot cavities.

1 cl, 1 dwg