US 12,435,720 B2
Rotary piston compressor
Florian Karl Ausserer, Dornbirn (AT)
Appl. No. 18/576,167
Filed by Florian Karl Ausserer, Dornbirn (AT)
PCT Filed Jul. 14, 2021, PCT No. PCT/AT2021/000015
§ 371(c)(1), (2) Date Jan. 3, 2024,
PCT Pub. No. WO2023/283660, PCT Pub. Date Jan. 19, 2023.
Prior Publication US 2024/0369061 A1, Nov. 7, 2024
Int. Cl. F04C 18/22 (2006.01); F01C 19/08 (2006.01); F01C 21/10 (2006.01); F04C 23/00 (2006.01); F04C 27/00 (2006.01)
CPC F04C 18/22 (2013.01) [F01C 19/08 (2013.01); F04C 27/002 (2013.01); F04C 27/005 (2013.01); F04C 2210/222 (2013.01); F04C 2240/20 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A rotary piston compressor for compressing gas, the rotary piston compressor comprising:
a working housing;
a rotary piston;
the working housing has a housing side wall and two housing covers arranged on oppositely situated sides of the housing side wall;
a side wall face of the housing side wall and a respective planar sealing face of the respective housing cover enclose a working chamber arranged in the working housing; and
an eccentric on which the rotary piston is rotatably mounted in the working chamber;
a gas inlet for introducing the gas to be compressed into the working chamber;
a gas outlet with a pressure-relief outlet valve for discharging the compressed gas from the working chamber;
the rotary piston has two piston bases, which face toward a respective one of the planar sealing faces of the housing covers, and a piston lateral surface which faces toward the side wall face of the housing side wall;
a respective planar-seal receiving channel is formed in the piston bases;
a planar seal is arranged in each of the planar-seal receiving channels, the planar seals each have a seal surface for contacting one of the planar sealing faces of the housing covers;
wherein to press the seal surface of the respective planar seal against the respective planar sealing face, lateral-surface openings are formed in the piston lateral surface of the rotary piston, the lateral-surface openings have a pressure-transmitting connection to the respective planar-seal receiving channel via pressure leadthrough lines, which are formed inside the rotary piston and each open into the respective planar-seal receiving channel on a side of the respective planar seal that faces away from the seal surface; and
wherein the rotary piston has two or more corner regions, and the planar seals are each sealed, with respect to the planar-seal receiving channel that receives them, in the corner regions of the rotary piston on a side thereof facing away from the respective seal surface.