US 12,405,008 B2
Apparatus for controlling an air inlet valve for a solid fuel burner
Richard Bentley, Buxton (GB); Andrew Hunt, Minehead (GB); and Stephen Hollick, Buxton (GB)
Assigned to Otter Controls Limited, Fairfield (GB)
Filed by Otter Controls Limited, Fairfield (GB)
Filed on May 19, 2022, as Appl. No. 17/748,826.
Claims priority of application No. 2107141 (GB), filed on May 19, 2021.
Prior Publication US 2022/0373184 A1, Nov. 24, 2022
Int. Cl. F24B 1/187 (2006.01); F24B 5/02 (2006.01)
CPC F24B 1/187 (2013.01) [F24B 5/023 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An apparatus for controlling flow of air through an air inlet in a solid fuel burner, the apparatus comprising:
a. a mechanical temperature sensor for sensing temperature within the solid fuel burner, the sensor comprising first and second elongate parts, the first elongate part having a first end that moves linearly in a direction of a length of the first elongate part, due to a difference in thermal expansion coefficients of the materials of the first and second elongate parts, in response to a change in the sensed temperature, wherein the first elongate part has a high coefficient of thermal expansion relative to the second elongate part; and
b. a movable valve member for controlling the flow of air through the air inlet, the moveable valve member being coupled to the first end of the first elongate part so as to close or restrict the air inlet as the sensed temperature increases.