Title: Preheater for clothes dryer

Abstract: The preheater for a clothes dryer preheats ambient air taken into the dryer by heat transfer from hot air discharged from the dryer, thus reducing the energy requirements of the dryer. The preheater includes a box with a heat conductive partition defining a first passage for flow of ambient air into the dryer and a second passage for flow of hot discharge air from the dryer reverse to the ambient air flow so that there is a relatively high temperature difference between the passages for effective heat transfer. Heat is transferred through the partition from discharge air to ambient air, and the partition has a serpentine configuration for increasing its heat exchanging surface area, thus improving heat transfer.

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Inventors: McConnell, Christopher L. (Opa Locka, FL, US)

Application Number: 734814
Filing Date: 1976-10-22
Publication_date: 1977-12-20
Assignee:
Primary Class(es): 165/135 34/86, 165/164, 165/909
Other Classes:
US Patent Ref:

2303247	Nov, 1942	Woods	165/135.
2445471	Jul, 1948	Buckholdt	165/135.
2818719	Jan, 1958	Cline	34/86.
3659646	May, 1972	Hurbo et al.	165/165.

Other Refs: 809,863892,021

Aug, 1951	DT
Mar, 1962	UK

Primary Examiner: Davis, Jr., Albert W.
Assistant Examiner:
Attorney: Oltman and Flynn