Importance

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Abstract

To dry wet fabrics, a hot drying gas is introduced into a drying chamber containing the fabrics. The drying chamber is maintained at a sufficiently high pressure greater than atmospheric pressure so that a portion of the gas in the drying chamber can be discharged directly to the atmosphere. The remainder of the gas in the drying chamber is withdrawn, and at least a portion of the withdrawn gas is used to produce the hot drying gas introduced into the drying chamber. This is effected by increasing the pressure of the withdrawn gas, heating the withdrawn gas, and combining it with a dilution gas. The amount of the dilution gas which is combined with the withdrawn gas comprises from about 5 to about 20% by volume of the hot drying gas introduced into the drying chamber. Before the withdrawn gas is heated, preferably it is filtered by a lint screen for removal of lint and other contaminants. Novel lint screens capable of self-cleaning during a cooling mode of operation are described.

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First Claim