Patent ID: 9694801
Date: 2017-07-04
CPC Classifications: B60G,B60T,Y10T

Claim:
1. A compressed air supply device for operating a pneumatic installation, comprising: an air supply unit configured to supply air; an air compression unit configured to compress air; a bleeding line comprising a controllable solenoid valve arrangement and a bleeding port configured to bleed air, the solenoid valve arrangement having a magnetic part and a pneumatic part; and a compressed air supply line comprising an air dryer and a compressed air port, the compressed air supply line being configured to supply the pneumatic installation with compressed air, wherein the pneumatic part is disposed in a line branching from the compressed air supply line, and wherein, when the magnetic part is de-energized, the pneumatic part is open between a pressure-side valve port and a control-side valve port of the line branching from the compressed air supply line, wherein the solenoid valve arrangement comprises a relay valve configured to maintain a residual pressure up to three bar.