US 11,751,747 B2
Warewash machine energy conservation incorporating vent controls
Alexander R. Anim-Mensah, Miamisburg, OH (US); and Mary E. Paulus, Sidney, OH (US)
Assigned to ILLINOIS TOOL WORKS INC., Glenview, IL (US)
Appl. No. 17/46,913
Filed by ILLINOIS TOOL WORKS INC., Glenview, IL (US)
PCT Filed Apr. 18, 2019, PCT No. PCT/US2019/028087
§ 371(c)(1), (2) Date Oct. 12, 2020,
PCT Pub. No. WO2019/209620, PCT Pub. Date Oct. 31, 2019.
Claims priority of provisional application 62/661,737, filed on Apr. 24, 2018.
Prior Publication US 2021/0145245 A1, May 20, 2021
Int. Cl. A47L 15/24 (2006.01); A47L 15/42 (2006.01); A47L 15/46 (2006.01); A47L 15/48 (2006.01)
CPC A47L 15/4291 (2013.01) [A47L 15/241 (2013.01); A47L 15/4287 (2013.01); A47L 15/46 (2013.01); A47L 15/486 (2013.01); A47L 15/488 (2013.01); A47L 2401/18 (2013.01); A47L 2501/10 (2013.01); A47L 2501/12 (2013.01)] 17 Claims
OG exemplary drawing
1. A warewash machine, comprising:
a housing defining a ware inlet, a ware outlet and an internal chamber running from the ware inlet to the ware outlet and through which wares are moved in a conveyance direction by a conveyor for cleaning, the internal chamber including a plurality of sequential spray zones including at least one wash zone and a rinse zone downstream of the wash zone in the conveyance direction;
a vent path from the chamber leading to a vent outlet for connecting to a building ventilation system;
a damper for controlling a flow area at a location along the vent path;
a controller connected to control a position of the damper, the controller configured to adjust a position of the damper based upon input from at least a first temperature sensor, wherein the first temperature sensor is located (i) proximate to the ware inlet, (ii) proximate to the ware outlet or (iii) along the vent path.