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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.:

US 10934921 B1

PDFFull Text
Date of Patent:
Mar. 02, 2021

Filed:

Mar. 02, 2017

Heater element as sensor for temperature control in transient systems

Applicant:

Watlow Electric Manufacturing Company, St. Louis, MO (US);

Inventors:

David P. Culbertson, Bristol, WI (US);

Jeremy Ohse, St. Louis, MO (US);

Mark D. Everly, St. Charles, MO (US);

Jeremy J. Quandt, Winona, MN (US);

James Pradun, Lake Geneva, WI (US);

John Rohde, Winona, MN (US);

Mark L. G. Hoven, Winona, MN (US);

Bret Wadewitz, Winona, MN (US);

Sanhong Zhang, Ballwin, MO (US);

Assignee:

Watlow Electric Manufacturing Company, St. Louis, MO (US);

Attorney:

Burris Law, PLLC

Primary Examiner:

Matthew G Marini

Int. Cl.
CPC ...
F01N 9/00 (2006.01); F01N 11/00 (2006.01); F01N 3/027 (2006.01); G01K 7/16 (2006.01); G01F 1/68 (2006.01); H05B 1/02 (2006.01); F01N 13/00 (2010.01); F02D 41/02 (2006.01); F02D 41/14 (2006.01); G05D 23/185 (2006.01); F01N 3/20 (2006.01); F02D 41/22 (2006.01); G01M 15/05 (2006.01); G07C 5/08 (2006.01); H05B 3/20 (2006.01); H05B 3/40 (2006.01); G05D 23/24 (2006.01); G05D 23/30 (2006.01); H05B 3/14 (2006.01); G01F 1/86 (2006.01); H05B 3/18 (2006.01); H05B 3/00 (2006.01); F01N 3/023 (2006.01); F01N 3/10 (2006.01); F01N 3/021 (2006.01); F01N 3/08 (2006.01); H01C 7/02 (2006.01); H01C 7/04 (2006.01);
U.S. Cl.
CPC ...
F01N 9/005 (2013.01); F01N 3/023 (2013.01); F01N 3/027 (2013.01); F01N 3/2006 (2013.01); F01N 3/2013 (2013.01); F01N 9/00 (2013.01); F01N 9/002 (2013.01); F01N 11/002 (2013.01); F01N 11/005 (2013.01); F01N 13/0097 (2014.06); F02D 41/024 (2013.01); F02D 41/1446 (2013.01); F02D 41/1447 (2013.01); F02D 41/22 (2013.01); F02D 41/222 (2013.01); G01F 1/68 (2013.01); G01F 1/86 (2013.01); G01K 7/16 (2013.01); G01M 15/05 (2013.01); G05D 23/185 (2013.01); G05D 23/2401 (2013.01); G05D 23/30 (2013.01); G07C 5/0808 (2013.01); H05B 1/0227 (2013.01); H05B 1/0244 (2013.01); H05B 3/0042 (2013.01); H05B 3/141 (2013.01); H05B 3/18 (2013.01); H05B 3/20 (2013.01); H05B 3/40 (2013.01); F01N 3/021 (2013.01); F01N 3/0814 (2013.01); F01N 3/103 (2013.01); F01N 3/106 (2013.01); F01N 3/2066 (2013.01); F01N 2240/10 (2013.01); F01N 2240/16 (2013.01); F01N 2240/36 (2013.01); F01N 2410/00 (2013.01); F01N 2410/04 (2013.01); F01N 2550/22 (2013.01); F01N 2560/06 (2013.01); F01N 2560/07 (2013.01); F01N 2560/12 (2013.01); F01N 2560/20 (2013.01); F01N 2610/102 (2013.01); F01N 2900/0416 (2013.01); F01N 2900/1404 (2013.01); F01N 2900/1406 (2013.01); F01N 2900/1411 (2013.01); F01N 2900/1602 (2013.01); F02D 2041/1433 (2013.01); F02D 2041/228 (2013.01); F28F 2200/00 (2013.01); G01K 2205/04 (2013.01); H01C 7/02 (2013.01); H01C 7/04 (2013.01); H05B 2203/019 (2013.01); H05B 2203/021 (2013.01); H05B 2203/022 (2013.01); Y02T 10/12 (2013.01); Y02T 10/40 (2013.01);
Abstract

A method of predicting the temperature of a resistive heating element in a heating system is provided. The method includes obtaining resistance characteristics of resistive heating elements and compensating for variations in the resistance characteristics over a temperature regime. The resistance characteristics of the resistive heating element include, but are not limited to, inaccuracies in resistance measurements due to strain-induced resistance variations, variations in resistance due to the rate of cooling, shifts in power output due to exposure to temperature, resistance to temperature relationships, non-monotonic resistance to temperature relationships, system measurement errors, and combinations of resistance characteristics. The method includes interpreting and calibrating resistance characteristics based on a priori measurements and in situ measurements.

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