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:
Jun. 25, 2019
Filed:
Aug. 31, 2016
Applicant:
Greenheck Fan Corporation, Schofield, WI (US);
Inventors:
Eric Baker, Schofield, WI (US);
Brandon Krautkramer, Schofield, WI (US);
Assignee:
Greenheck Fan Corporation, Scholfield, WI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F24D 19/10 (2006.01); F24D 5/02 (2006.01); F24H 9/18 (2006.01); F24H 3/00 (2006.01); F24H 9/20 (2006.01); F24H 3/08 (2006.01); F24H 3/06 (2006.01); F23N 1/00 (2006.01);
U.S. Cl.
CPC ...
F24D 19/1084 (2013.01); F24D 5/02 (2013.01); F24H 3/006 (2013.01); F24H 3/087 (2013.01); F24H 9/1881 (2013.01); F24H 9/2085 (2013.01);
Abstract
A high turndown furnace for an air handling system. In one example, the furnace includes a plurality of tubes divisible by four with a first modulating valve supplying gas to ¼ of the tubes and a second modulating valve supplying gas to ¾ of the tubes. In one aspect, the furnace is capable of providing a 16:1 turndown. In one aspect, the furnace is capable of providing seamless turndown operation throughout the entire firing range.