The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 1980
Filed:
Nov. 18, 1977
Richard L Ronning, Overland Park, KS (US);
Ronning Engineering Company, Inc., Overland Park, KS (US);
Abstract
The rotatable dryer drum in a dehydrator for crop material is provided with a plurality of centrally disposed flighting panels for escalating turbulence in the material-entraining heated airflow passing through the drum as well as to increase the available heat transfer area, thereby significantly improving the efficiency of the dehydrator. The panels are supported in offset, thermally isolated relation to the sidewall of the drum by a series of elongate struts spaced along the length of the drum and extending between the sidewall and the panels such that the flighting resists thermal warpage and requires only a minimum amount of welding for installation. In preferred forms there is provided a dropout chamber adjacent the drum outlet for collecting material separated from the airflow, the chamber having a mechanical conveyor for bulk discharge of the collected material. A return duct from the outlet of the drum to its inlet adjacent the burner is provided for recycling a portion of the heated airflow thereby reducing fuel requirements for the burner and further increasing the efficiency of the dehydrator.