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Method and apparatus for vapor saturated gas delivery

  • US 4,060,576 A
  • Filed: 09/08/1975
  • Issued: 11/29/1977
  • Est. Priority Date: 09/13/1972
  • Status: Expired due to Term
First Claim
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1. Gas conditioning apparatus, comprising:

  • a gas humidifier including means defining a water evaporation chamber in said humidifier;

    first heating means for heating water in said evaporation chamber;

    a presettable temperature controller for controlling said first heating means to control the water temperature in said chamber;

    a gas delivery line extending between said gas humidifier and a delivery point;

    a second heater associated with and extending along substantially the entire length of said delivery line;

    a temperature sensor detecting the temperature of gas leaving the delivery line; and

    ,a variable temperature controller responsive to said temperature sensor and controlling the secondary heater to alter the heat applied thereby to gas flowing through said line,said first heating means heating said gas in said humidifier to a temperature T1 and a vapour level W1 of significantly less than 100% saturation and the variable temperature controller operating independently to maintain the gas temperature at the delivery point at a second temperature T2, lower than T1, with a selected vapour level W2 which is higher than W1.

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