Patent ID: 8317484

Claim:
An oil-injected compressor for production of compressed air, an oil circuit for lubrication of the oil-injected compressor, and an oil separator device for separation of oil from a compressed air/oil mixture and delivering a compressed air flow, the oil-injected compressor comprising: a self-resetting temperature switch near an inlet of the oil separator device for the compressed air/oil mixture, the self-resetting temperature switch being configured to switch off the oil-injected compressor when the compressed air/oil mixture flowing into the inlet reaches a maximum temperature limit; at least one additional non-self-resetting temperature switch in an internal area of the oil separator device which is configured to trip and switch the oil-injected compressor off in the event of a fire or detonation of the compressed air/oil mixture contained in the oil separator device; wherein the additional non-self-resetting temperature switch is arranged near an outlet of the internal area of the oil separator device where the compressed air flow out of the oil separator device is at a high flow speed; wherein the additional non-self-resetting temperature switch is arranged in the compressed air flow at the outlet between an outlet side pressure-maintenance valve and a fine separator of the oil separator device; and an extinguishant supply device configured to force extinguishants into the internal area of the oil separator device when the additional non-self-resetting temperature switch trips.