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Device for cleaning and drying compressed gas

  • US 5,427,609 A
  • Filed: 09/14/1993
  • Issued: 06/27/1995
  • Est. Priority Date: 09/14/1993
  • Status: Expired due to Term
First Claim
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1. Method for drying a compressed gas comprising the steps of:

  • providing a system including a source of compressed gas, a storage reservoir, a dryer having an inlet in communication with the source of compressed gas, an outlet in communication with the storage reservoir, an electrically actuated purge valve, desiccant beads requiring regeneration and a chamber, with the outlet being on the opposite side of the desiccant beads than the inlet and the purge valve, with the chamber located intermediate the desiccant beads and the outlet, and with the inlet and purge valve being on the same side of the desiccant beads;

    providing a check valve intermediate the chamber and the storage reservoir allowing flow of compressed gas from the desiccant beads to the storage reservoir, with the compressed gas in the storage reservoir being available for use;

    providing a restricted orifice for passage of compressed gas intermediate the chamber and the desiccant beads and parallel to the check valve;

    stopping the source of compressed gas;

    providing electrical actuation to the purge valve itself for opening the purge valve to a pressure less than the pressure of the compressed gas in the storage reservoir for a short, predetermined time for drawing compressed gas through the restricted orifice and out the purge valve while the purge valve is open.

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