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US 10,893,790 B2Granted
Warewasher with air assisted prescrapping
AssigneeIllinois Tool Works Inc.
InventorsThomas J. Ashworth, Alexander R. Anim-Mensah, Mary E. Paulus
Life of this patent
Estimating the term…
Abstract
A warewash machine for washing wares includes a chamber for receiving wares, the chamber having an inlet side, an outlet side, multiple spray zones between the inlet side and the outlet side, and a conveyor arrangement for moving wares along a conveyance path through the multiple spray zones in a ware travel direction. A prescrapping zone is located toward the inlet side of the chamber, the prescrapping zone having a blow-off system comprising a plurality of prescrapping nozzles and a compressed air feed line for delivering compressed air to the prescrapping nozzles.
Claims15
A warewash machine for washing wares, comprising:
- a chamber for receiving wares, the chamber having an inlet, an outlet, multiple spray zones between the inlet and the outlet, and a conveyor arrangement for moving wares along a conveyance path through the multiple spray zones in a ware travel direction;
- wherein the multiple spray zones include a pre-wash spray zone with a plurality of spray nozzles, a liquid collection tank below the conveyor arrangement for collecting sprayed liquid that falls within the pre-wash spray zone, and a pump connected to recirculate liquid from the liquid collection tank back to the plurality of spray nozzles;
- a prescrapping zone located upstream of the pre-wash spray zone relative to the ware travel direction and adjacent the inlet, wherein the prescrapping zone includes a blow-off system including a plurality of prescrapping nozzles above the conveyance path, wherein the prescrapping zone includes a soil collection system below the conveyance path;
- wherein the blow-off system further comprises a compressed air feed line for delivering compressed air to the prescrapping nozzles, wherein the prescrapping nozzles are oriented to deliver air downward toward the conveyance path for moving food soils off of wares and down into the soil collection system;
- wherein the soil collection system comprises a collection compartment below the conveyance path, wherein the collection compartment includes walls configured to direct food soils toward a strainer below the conveyance path, wherein the soil collection system further includes a liquid spray system including a plurality of soil collection system spray nozzles below the conveyance path and oriented for spraying liquid onto one or more of the walls to promote movement of the food soils toward the strainer.
2 more elements
A warewash machine for washing wares, comprising:
- a chamber for receiving wares, the chamber including multiple spray zones for receiving wares and spraying liquid thereon during cleaning;
- a conveyor passing through the chamber for carrying wares through the chamber in a ware travel direction during cleaning;
- wherein the multiple spray zones include a first spray zone with a plurality of spray nozzles, a liquid collection tank below the conveyor for collecting sprayed liquid that falls within the first spray zone, and a pump connected to recirculate liquid from the liquid collection tank back to the plurality of spray nozzles;
- a prescrapping zone internal of the chamber and upstream of the first spray zone relative to the ware travel direction, the prescrapping zone including a blow-off system and a soil collection system, the blow-off system comprising a plurality of prescrapping nozzles above the conveyor and a compressed air feed line for delivering compressed air to the prescrapping nozzles, wherein the prescrapping nozzles are oriented to deliver air flow down onto wares on the conveyor in the prescrapping zone so as to move at least some food soils off of the wares and into the soil collection system, wherein the soil collection system is located beneath the conveyor;
- wherein the soil collection system comprises a collection compartment with walls that direct food soils toward a strainer, and a liquid spray system including a plurality of collection system nozzles oriented for spraying liquid onto one or more of the walls to promote movement of the food soils toward the strainer.
2 more elements
Dependencies are inferred from the claim text.