| 摘要 |
To provide a method and a system of purging water in an air dryer that can effectively dehumidify compressed air only by utilizing a small amount of secondary compressed air dehumidified by the air dryer as purge air. In an air pressure circuit having an compressed air source, an air pressure cylinder driven by the compressed air supplied from the compressed air source, a switching valve for supplying and exhausting the compressed air to a pressure chamber of the air pressure cylinder, and an air dryer interposed between the compressed air source and an inlet port of the switching valve, the compressed air from the compressed air source is dehumidified in the air dryer, a part of the dehumidified secondary compressed air is caused to flow together with the air discharged from the air pressure cylinder, and the air flowing together is supplied to a purge flow path of the air dryer as purge air.
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