| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an air supply system with which the practice of a purging treatment is prohibited according to the intention of an operator such as a driver, and water, oil or dirt and the like are not unconsciously discharged by accompanying with purged air. <P>SOLUTION: In the air supply system 100, compressed air is stored in an air tank 112 for the use. The air supply system 100 includes a pressure adjuster 117 for sending air as a signal of unloading, which unloads an air compressor 111 and opens a purging valve 127 of an air dryer 113 to perform the purging treatment. In the piping 117b for unloading, a three way valve 200 is intermediately mounted. When an on-off switch 300 is in off position, a normal state is set where a first entrance 201 and an exit 203 are communicated. When the switch 300 is in on position, the second entrance 202 and the exit 203 are set communicated and the air compressor 111 is unloaded to set a state of prohibiting the execution of a purging treatment. <P>COPYRIGHT: (C)2013,JPO&INPIT |
