Drying and gas or vapor contact with solids – Apparatus – Rotary drums or receptacles
Patent
1975-06-20
1976-06-01
Sprague, Kenneth W.
Drying and gas or vapor contact with solids
Apparatus
Rotary drums or receptacles
34 86, 34133, 34235, F26B 1102
Patent
active
039598926
ABSTRACT:
The present invention provides a heated air recycle arrangement for a clothes dryer which can be advantageously used in a clothes dryer having an air supply; a heater arrangement for heating the air supplied by the air supply; a drying zone including having an inlet communicating with the air supply and an outlet, and further including receptacle means to retain clothes to be dried in the dryer; a blower to circulate heated air from the air supply through the drying zone; and an exhaust duct having an inlet communicating with the outlet from the drying zone and an outlet. The present invention provides a second duct having an inlet and an outlet where the second duct has a mean diameter less than the mean diameter of the exhaust duct wherein the second duct inlet and a selected portion of the length of the second duct are disposed generally concentrically within a portion of the length of the exhaust duct to form an annular air flow conduit between the wall of the exhaust duct and the portion of the wall of the second duct disposed within the exhaust duct is received by the inlet to the second duct and the outer portion of the air stream flowing through the exhaust duct passes through the annular conduit to the exhaust duct outlet, and where the outlet from the second duct communicates with the air supply to recirculate a portion of the air carried by the exhaust duct to the air supply.
REFERENCES:
patent: 497018 (1893-05-01), Diemer
patent: 1014573 (1912-01-01), Davis
patent: 3157391 (1964-11-01), Angelone
patent: 3771238 (1973-11-01), Vaughn
Cloud Robert H.
Hopton Edward J.
A.M. Industries
Sprague Kenneth W.
Steutermann Edward M.
Yeung James C.
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