| 摘要 |
A compressor adapted to be put into a load operating state when there exists the relation Pd<=PSL between the discharge pressure Pd and a set lower limit of pressure PSL and adapted to be put into an unload operating state when there exists the relation Pd>=PSH between the discharge pressure Pd and a set upper limit of pressure PSH, or when there exists the relation PSL<Pd<PSH among the discharge pressure Pd, the set upper limit of pressure PSH, and the set lower limit of pressure PSL and, in addition, there exists the relation Tc>=Ts between the count time Tc indicated by a timer to be started when a preceding unload operation is started and a set time Ts.
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