Abstract: The invention relates to a scroll compressor comprising a housing with a housing cover and an intermediate housing wall, an electric drive unit, which is connected to an eccentric bearing by a drive shaft having an axle (A), a movable displacement spiral rotatable about an eccentric axis (EA) and connected to the eccentric bearing, and a stationary counter-spiral in engagement with the displacement spiral; wherein—the intermediate housing wall and the displacement spiral are arranged on a suction side (SA) and the housing cover and the counter-spiral are arranged on a high-pressure side (HD), —a plurality of cylindrical recesses are formed on the side of the displacement spiral facing the suction side (SA), and—pins are arranged on the side of the intermediate housing wall facing the high-pressure side (HD), in such a way that they project into the cylindrical recesses and co-operate therewith, so that a guide for the movable displacement spiral is formed, and, preferably, —a ring element surrounding the pin

Abstract: The invention relates to a scroll-type positive displacement machine, in particular a scroll compressor, comprising a highpressure chamber (11), a low-pressure chamber (12), an orbiting displacement spiral (13), a counter spiral (14), and a counterpressure chamber (15) which is located between the low-pressure chamber (12) and the displacement spiral (13), wherein an outlet opening (16), through which a compressed working medium flows into the high-pressure chamber (11) during operation, is centrally arranged in the counter spiral (14) in a high-pressure region, and wherein the displacement spiral (13) has at least a first and a second passage opening (17a, 17b) for fluidic connection to the counter-pressure chamber (15), wherein at least the first passage opening (17a) is arranged in the region of the outlet opening (16) so that, during operation, the first passage opening (17a) and the outlet opening (16) temporarily overlap at least in sections.

Abstract: The invention relates to a scroll-type positive displacement machine, in particular a scroll compressor, comprising a highpressure chamber (11), a low-pressure chamber (12), an orbiting displacement spiral (13), a counter spiral (14), and a counterpressure chamber (15) which is located between the low-pressure chamber (12) and the displacement spiral (13), wherein an outlet opening (16), through which a compressed working medium flows into the high-pressure chamber (11) during operation, is centrally arranged in the counter spiral (14) in a high-pressure region, and wherein the displacement spiral (13) has at least a first and a second passage opening (17a, 17b) for fluidic connection to the counter-pressure chamber (15), wherein at least the first passage opening (17a) is arranged in the region of the outlet opening (16) so that, during operation, the first passage opening (17a) and the outlet opening (16) temporarily overlap at least in sections.