Compressor device and method for controlling such a compressor device

A compressor device that comprises a liquid-injected compressor element that is equipped with a compression chamber with at least one coolant inlet, and which furthermore comprises a gas outlet, a gas/coolant separation tank connected to the gas outlet, and a cooling circuit equipped with a cooler that extends between the separation tank and the coolant inlet, and which is equipped with control means to adjust the temperature of the coolant flow supplied to the compressor element, wherein the aforementioned control means comprise a first and a second sub-controller, each with a different target parameter, whereby the aforementioned control means also comprise switching means to place one of the two sub-controllers in an activated state and the other of the two sub-controllers in a deactivated state.

A method for controlling a compressor device that is equipped with a liquid-injected compressor element provided with a compression chamber with one or more coolant inlets, a gas/coolant separation tank connected to the outlet of the compressor element, and a pipe equipped with a cooler, for supplying a flow of coolant between the tank and the coolant inlet, wherein this method comprises a selection step in which one of two or more sub-controllers that exclude one another and which act on a fixed but different target parameter is activated on the basis of the expected or actual operating conditions in order to adjust the temperature of the coolant at the coolant inlet of the compressor element.