Method and apparatus for improving the fuel efficiency of a laun

Details Method and apparatus for improving the fuel efficiency of a laun Method and apparatus for improving the fuel efficiency of a laun

1978-11-06

1980-06-10

Camby, John J.

Heating

Processes of heating or heater operation

Including repairing, converting or assembling apparatus

34 86, 34131, 34133, 432105, F27D 100, F27B 736

Patent

active

042070562

ABSTRACT:
A laundry dryer of the type having a pair of upstream and downstream side-by-side gas burners is modified by the removal of the upstream burner and replacing the burner with a reheat plenum. The reheat plenum is generally tear-shaped in cross section to provide an inlet portion having a relatively large airflow cross sectional area located laterally adjacent the burner so that the recirculated airflow enters the reheat plenum at a relatively low velocity conducive to settlement of lint therein at a point in the plenum away from high temperature heat exchange relation with the burner. The lower wall of the reheat plenum is angularly inclined and preferably curvilinear in contour and extends above the downstream burner in flame deflecting and heat exchange relation therewith to heat the recirculated air within the reheat plenum. The reheat plenum also has a discharge portion of relatively smaller cross sectional area which injects the reheated air at relatively high velocity into the flow of heated makeup air to effect mixing of the reheated and makeup airflow.

REFERENCES:
patent: 3290028 (1966-12-01), Kruzan
patent: 3959892 (1976-06-01), Cloud et al.
patent: 3969070 (1976-07-01), Thompson
patent: 4065253 (1977-12-01), Bullock

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