Screw Compressor

A screw compressor, including a compressor housing having a screw rotor chamber arranged therein, two screw rotors that are arranged in the screw rotor chamber and are mounted on the compressor housing, each rotatably about a respective screw rotor axis, and engage in each other by means of their helical contours and each cooperate with compression wall surfaces which are adjacent thereto and partly surround them in order to receive gaseous medium that is supplied by way of a low-pressure chamber arranged in the compressor housing and to discharge it in the region of a high-pressure chamber that is arranged in the compressor housing, wherein the gaseous medium is enclosed in compression chambers that are formed between the helical contours and compression wall surfaces that are adjacent to the latter with an intake volume at low pressure and is compressed to a final volume at high pressure, and including at least one control slider that is arranged in a slider channel of the compressor housing and is adjacent to both screw rotors by means of slider compression wall surfaces and is movable in a direction of displacement parallel to the screw rotor axes and take a form that affects the final volume and/or the initial volume, the screw compressor has two control sliders, wherein a first control slider takes a form that affects the final volume and a second control slider takes a form that affects the initial volume, in that a position determining device is provided for the two control sliders that includes a first position indicator element, coupled to the first control slider, and a second position indicator element, coupled to the second control slider, in that both position indicator elements cooperate with a common detector element that extends parallel to the direction of displacement of the control sliders and along which the position indicator elements are movable when the control sliders are moved, and the detector element is coupled to an evaluation device that determines the respective positions of the position indicator elements along the detector element.

A screw compressor, including a compressor housing having a screw rotor chamber arranged therein, two screw rotors that are arranged in the screw rotor chamber and are mounted on the compressor housing, each rotatably about a respective screw rotor axis, and engage in each other by means of their helical contours and each cooperate with compression wall surfaces which are adjacent thereto and partly surround them in order to receive gaseous medium that is supplied by way of a low-pressure chamber arranged in the compressor housing and to discharge it in the region of a high-pressure chamber that is arranged in the compressor housing, wherein the gaseous medium is enclosed in compression chambers that are formed between the helical contours and compression wall surfaces that are adjacent to the latter with an intake volume at low pressure and is compressed to a final volume at high pressure, and including at least one control slider that is arranged in a slider channel of the compressor housing and is adjacent to both screw rotors by means of slider compression wall surfaces and is movable in a direction of displacement parallel to the screw rotor axes and take a form that affects the final volume and/or the initial volume, the screw compressor has two control sliders, a first control slider and a second control slider are arranged one behind the other in the direction of displacement thereof, the first control slider is arranged on a side of the second control slider facing the high-pressure chamber, and in that the first control slider is guided in relation to the second control slider by a telescopic guide.