US 12,326,107 B2
Dual-purpose heater and fluid flow measurement system
Cal Swanson, St. Louis, MO (US); Mark D. Everly, St. Charles, MO (US); David P. Culbertson, Bristol, WI (US); James N. Pradun, Lake Geneva, WI (US); Jeremy J. Quandt, Winona, MN (US); Mark L. G. Hoven, Winona, MN (US); Jeremy Ohse, St. Louis, MO (US); and Sanhong Zhang, Wildwood, MO (US)
Assigned to WATLOW ELECTRIC MANUFACTURING COMPANY, St. Louis, MO (US)
Filed by WATLOW ELECTRIC MANUFACTURING COMPANY, St. Louis, MO (US)
Filed on Jun. 14, 2024, as Appl. No. 18/743,426.
Application 18/743,426 is a continuation of application No. 16/884,771, filed on May 27, 2020, granted, now 12,037,933.
Application 16/884,771 is a continuation of application No. 15/448,068, filed on Mar. 2, 2017, granted, now 10,724,417, issued on Jul. 28, 2020.
Claims priority of provisional application 62/302,482, filed on Mar. 2, 2016.
Prior Publication US 2024/0328342 A1, Oct. 3, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F01N 9/00 (2006.01); F01N 3/023 (2006.01); F01N 3/027 (2006.01); F01N 3/20 (2006.01); F01N 11/00 (2006.01); F01N 13/00 (2010.01); F02D 41/02 (2006.01); F02D 41/14 (2006.01); F02D 41/22 (2006.01); G01F 1/68 (2006.01); G01F 1/86 (2006.01); G01K 7/16 (2006.01); G01M 15/05 (2006.01); G05D 23/185 (2006.01); G05D 23/24 (2006.01); G05D 23/30 (2006.01); G07C 5/08 (2006.01); H05B 1/02 (2006.01); H05B 3/00 (2006.01); H05B 3/14 (2006.01); H05B 3/18 (2006.01); H05B 3/20 (2006.01); H05B 3/40 (2006.01); F01N 3/021 (2006.01); F01N 3/08 (2006.01); F01N 3/10 (2006.01); H01C 7/02 (2006.01); H01C 7/04 (2006.01)
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)] 20 Claims
OG exemplary drawing
 
1. A control system for use in a fluid flow application comprising:
a heater having at least one resistive heating element having a relationship between resistance and temperature defining a non-monotonic curve, the heater operable to heat fluid flow; and
a control device configured to determine a flow characteristic of the fluid flow and a temperature of the at least one resistive heating element along the non-monotonic curve between resistance and temperature based on a change in resistance of the at least one resistive heating element.