Sicherheitseinrichtung für Klimakompressor

摘要

The invention relates to a safety device for limiting the pressure of a compressor (32) that operates with variable stroke or variable displacement. The tilt of the wobble plate or the swash plate is varied at least by the difference between the high pressure in the discharge pressure zone (31) and the driving chamber pressure (33), optionally by the difference between the driving chamber pressure (33) and the intake pressure (34). The safety device is provided with a valve device (30) that is disposed in the supply connection and optionally with an additional connection between the driving chamber pressure zone (33) and the intake pressure zone (34). A pressure-limiting valve (30) discharges the pressure medium into the driving chamber (33) when a high pressure in the high pressure zone (31) is exceeded. the safety device is provided with a further pressure-limiting valve (36) or with a rupture disk (39) that discharges the pressure medium from the driving chamber (33) into the ambiance when the pressure in the driving chamber (33) is exceeded.