	US 12,228,281 B2
	Control strategy for hot surface igniter
Peter Leigh, Chongqing (CN)
Assigned to CHONGQING LE-MARK TECHNOLOGY CO., LTD., Chongqing (CN)
Appl. No. 17/761,164
Filed by CHONGQING LE-MARK TECHNOLOGY CO., LTD., Chongqing (CN)
PCT Filed Sep. 11, 2020, PCT No. PCT/CN2020/114726 § 371(c)(1), (2) Date Mar. 16, 2022, PCT Pub. No. WO2021/073326, PCT Pub. Date Apr. 22, 2021.
Claims priority of application No. 201910977529.1 (CN), filed on Oct. 15, 2019.
Prior Publication US 2023/0349554 A1, Nov. 2, 2023
Int. Cl. F23Q 7/22 (2006.01); F24C 3/10 (2006.01); G05B 15/02 (2006.01); G05D 23/19 (2006.01); H05B 3/14 (2006.01)

CPC F23Q 7/22 (2013.01) [G05D 23/1951 (2013.01); F24C 3/10 (2013.01); G05B 15/02 (2013.01); H05B 3/14 (2013.01)]

8 Claims

1. A control strategy for a hot surface igniter: comprising:

dividing a working time of the hot surface igniter into t1, t2, . . . , and tn time periods on the basis of a hardware circuit of the hot surface igniter and a software algorithm, and

adjusting an output voltage or an output power of the hardware circuit by the software algorithm to make the hot surface igniter reach an expected temperature, wherein adjusting comprises:

step I, obtaining a working time-temperature change curve that meets requirements according to product characteristics and application scenarios of the hot surface igniter;

step II, dividing the working time of the hot surface igniter in step I into t1, t2, . . . , and tn time periods;

step III, in each time period, controlling, by the software algorithm, the output voltage or output power of the hardware circuit to make the hot surface igniter reach a temperature value in the time period.