Data processing: generic control systems or specific application – Specific application – apparatus or process – Specific application of temperature responsive control system
Reexamination Certificate
2006-10-18
2008-11-25
Rodriguez, Paul L (Department: 2123)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Specific application of temperature responsive control system
C110S190000, C126S100000, C126S500000, C126S501000, C126S502000, C165S287000, C700S274000, C700S275000, C700S300000
Reexamination Certificate
active
07457689
ABSTRACT:
Apparatus for controlling the operation of a biomass stove utilizes three proportional integral derivative (PID) controllers as part of a closed loop to control the fuel feed rate, the convection fan speed and the combustion fan speed. The first loop controls room temperature, the second loop controls the convection fan speed and the third loop controls the combustion fan. Appropriate temperature readings are utilized for the first and second loop. The third loop, which utilized feedback of the ratio between the heat exchanger temperature to the exhaust temperature, in addition to measuring these temperatures also references a library of look-up tables of such ratios over the entire heat range of the stove that have been correlated to combustion efficiency, as an input. This enables the operator to optimize the heat output for any operating point.
REFERENCES:
patent: 2524868 (1950-10-01), Worsham
patent: 4312278 (1982-01-01), Smith et al.
patent: 4619209 (1986-10-01), Traeger et al.
patent: 4947769 (1990-08-01), Whitfield
patent: 5001993 (1991-03-01), Gramlow
patent: 5123360 (1992-06-01), Burke et al.
patent: 5137010 (1992-08-01), Whitfield et al.
patent: 5285738 (1994-02-01), Cullen
patent: 5357879 (1994-10-01), Shiono et al.
patent: 5488943 (1996-02-01), Whitfield et al.
patent: 5873356 (1999-02-01), Vossler et al.
patent: 6336449 (2002-01-01), Drisdelle et al.
patent: 7004084 (2006-02-01), Anderson et al.
patent: 7241135 (2007-07-01), Munsterhuis et al.
patent: 2004/0194679 (2004-10-01), Mendive et al.
patent: 2004/0200394 (2004-10-01), Krumrei
patent: 2007/0137537 (2007-06-01), Drisdelle et al.
patent: 3226877 (1984-01-01), None
patent: 0482306 (1992-04-01), None
patent: 2072831 (1981-10-01), None
patent: WO-2006/081600 (2006-08-01), None
Harman Stove Company, “The Harmon P61 & P61A Pellet Stoves”, Brochure, 4 pages.
Harmon Stove Company, “The Harmon PC 45 Corn/Pellet Stove”, Installation & Operating Manual, 28 pages.
Mast Marion L.
Nelson Eric W.
Hestia Heating Products, Inc.
Nawrocki, Rooney & Sivertson P.A.
Rodriguez Carlos Ortiz
Rodriguez Paul L
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