Oet Gmbh

Roman Lässer

Christian Busch

Jochen Bont

Frank Obrist

Uwe Wuitz

Christian Schmälzle

Markus Öttl

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

Positive displacement machine, method, vehicle air conditioning system, and vehicle

The invention relates to a scroll-type positive displacement machine, in particular a scroll compressor, comprising a highpressure chamber (), a low-pressure chamber (), an orbiting displacement spiral (), a counter spiral (), and a counterpressure chamber () which is located between the low-pressure chamber () and the displacement spiral (), the displacement spiral () engaging in the counter spiral () in such a way that, during operation, at least a first and a second compression chamber () for receiving a working medium are temporarily formed, and the displacement spiral () having at least one passage opening () for fluidic connection to the counter-pressure chamber (), wherein the passage opening () is located in the displacement spiral () in such a manner that, during operation, due to the orbiting movement of the displacement spiral (), at least sections of the passage opening () are temporarily arranged in the first compression chamber () and subsequently at least sections of the passage opening are temporarily arranged in the second compression chamber ().

Scroll machine with passage in spiral, method, vehicle air conditioning system, and vehicle

The invention relates to a displacement machine according to the spiral principle, in particular a scroll compressor or scroll expander, with a high-pressure chamber, a low-pressure chamber and an orbiting displacement spiral, which engages in a counter-spiral such that chambers are formed between the displacement spiral and the counter-spiral for receiving a working medium, wherein a counter-pressure chamber is formed between the low-pressure chamber and the displacement spiral. According to the invention a pressure regulating device which is fluidically connected to the counter-pressure chamber sets a pressure difference between the counter-pressure chamber and the low-pressure chamber by means of a set value specified by the computing unit.

Displacement machine according to the spiral principle, method to regulate pressure in the counter-pressure chamber by using a pressure difference and characteristic curve

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Dornbirn, Austria

Roman Lässer