Patent ID: 11905952
Assignee: OET GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 16:
17. A scroll positive displacement machine with a high-pressure chamber, a low-pressure chamber, an orbiting displacement spiral, a counter spiral and a counter-pressure chamber, which is arranged between the low-pressure chamber and the displacement spiral, wherein the orbiting displacement spiral engages into the counter spiral in such a way that, during operation, at least a first and a second compression chamber are temporarily formed for receiving a working medium, and wherein the orbiting displacement spiral has at least one passage opening for fluid connection with the counter-pressure chamber, wherein the at least one passage opening is arranged in the orbiting displacement spiral in such a way that, during operation, orbiting motion of the orbiting displacement spiral causes the at least one passage opening to be temporarily arranged at least in sections in the first compression chamber, and subsequently temporarily arranged at least in sections in the second compression chamber; and
wherein the first compression chamber is fluidically connected with the counter-pressure chamber at a relative volume of 84% to 40%.