Compressor System for a Compressed Air Supply Arrangement

Abstract

A compressor system for a compressed-air supply arrangement includes an adjustable throttle device arranged in the suction line of the compressor. The throttle device is adjustable between a fully open load position and an idle position with a predefined narrowed throttle cross section. The idle power of the compressor is reduced as a result of the reduction of the pressure level downstream of the throttle device without additional lines, filters or the like.

What is claimed is: 
     
         1 . A compressor system for a compressed-air supply arrangement, the system comprising a compressor having a suction line; and an adjustable throttle device arranged in the suction line, the throttle device being adjustable between a fully open load position and an idle position characterized by a predefined narrowed throttle cross section. 
     
     
         2 . The compressor system as claimed in  claim 1 , wherein the throttle device includes a throttle element, the throttle element being adjustable between the load position and the idle position, the idle position being characterized by a free predefined narrowed throttle cross section. 
     
     
         3 . The compressor system as claimed in  claim 1 , wherein the throttle device includes a throttle element, the throttle element being adjustable between the load position and the idle position, the suction line being fully open in the load position and fully closed in the idle position; and further comprising a fixed throttle including a predefined throttle cross section, the fixed throttle being arranged substantially parallel to the suction line. 
     
     
         4 . The compressor system as claimed in  claim 2 , wherein the throttle element is a throttle flap arranged pivotably in the suction line. 
     
     
         5 . The compressor system as claimed in  claim 2 , wherein the throttle element is a slide piston arranged in the suction line, the slide piston being displaceable transversely with respect to air flow direction. 
     
     
         6 . The compressor system as claimed in  claim 2 , wherein the throttle element is an adjustable iris aperture arranged in the suction line. 
     
     
         7 . The compressor system as claimed in  claim 3 , wherein the throttle element is a throttle flap arranged pivotably in the suction line, and wherein the fixed throttle is a throttle aperture formed in the throttle flap. 
     
     
         8 . The compressor system as claimed in  claim 1 , wherein the compressor is a piston compressor, and wherein the throttle device is integrated into a cylinder head of the piston compressor. 
     
     
         9 . The compressor system as claimed in  claim 1 , further comprising a conventional idle system. 
     
     
         10 . The compressor system as claimed in  claim 1 , further comprising an actuator and a control device, the control device being connected to a pressure sensor, wherein the throttle device is actuable by the actuator, and wherein the actuator is actuable by the control device as a function of predefined operating conditions. 
     
     
         11 . The compressor system as claimed in  claim 1 , wherein the throttle device is connected to an inlet line through which air pre-compressed by a supercharger is supplyable. 
     
     
         12 . The compressor system as claimed in  claim 9 , wherein the conventional idle system is one of a circulation circuit and a return flow circuit.