| 摘要 |
PROBLEM TO BE SOLVED: To provide a compressed air supply source system for a pneumatic tool for connecting in parallel two air compressors with wasteful consumption of compressed air reduced. SOLUTION: This compressed air supply source system 100 is so formed that a first air compressor (master device side air compressor) 5 and a second air compressor (slave device side air compressor) 4 are connected in parallel through a check valve 10, the set pressure of the pressure reducing valve 45 of the slave device side air compressor 4 is set lower than the set pressure of the pressure reducing valve 55 of the master device side air compressor 5, and when pressure P1 of compressed air generated by the master device side air compressor 5 is reduced to pressure P2 of the set pressure Ps or less (P2<Ps) in the secondary pressure side port M2 of the pressure reducing valve 55, compressed air which is generated by the slave device side air compressor 4 and is depressed to pressure P2' lower than the set pressure Ps of the pressure reducing valve 55 by the lower set pressure of the pressure reducing valve 45, is supplied to the delivery port 53s of the master device side air compressor 5 through the check valve 10. Thereby, wasteful discharge of compressed air into the atmosphere based on the relief function of the pressure reducing valve 55 is prevented. COPYRIGHT: (C)2007,JPO&INPIT
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