A dish washer includes: a tub defining a washing space, a spray module disposed inside the tub and configured to spray water to the washing space, a sump configured to store water, a washing pump configured to supply the water stored in the sump to the spray module, and an air jet generator disposed below a bottom surface of the tub and configured to receive a portion of the water discharged from the washing pump to generate air bubbles in the water and discharge the water having air bubbles to the washing space. The air jet generator includes an air pulverizing pipe including a first pipe providing a cross-sectional area reducing in a water flowing direction, a second pipe providing a cross-sectional area increasing in the water flowing direction, and an air tab disposed at an upper portion of the second pipe.

A dishwasher includes a tub in which tableware is stored; a washing nozzle which is installed in the tub and sprays washing water; a washing pump which pumps the washing water to the washing nozzle; a sump in which the washing water is stored; and an air jet generator which is mounted in the tub, and supplies air to the washing water to contain an air bubble; wherein the air jet generator comprises: an air jet nozzle which sprays the washing water containing the air bubble into the tub; a discharge port which discharges the washing water containing the air bubble to the air jet nozzle; and a cap which surrounds at least a portion of the discharge port exposed in the tub.

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.

A warewash machine carries out at least one of (i) delivering both compressed air and rinse liquid to a plurality of wash spray nozzles of the warewash machine for spraying onto the wares during at least part of a washing operation of a ware cleaning cycle, wherein the wash liquid is recirculated from a wash tank below the spray zone; or (ii) lowering wares from the spray zone into a wash tank below the spray zone to submerge the wares within wash liquid of the wash tank and delivering compressed air into the wash tank during at least part of a washing operation of a ware cleaning cycle; or (iii) delivering both compressed air and rinse liquid to a plurality of rinse spray nozzles of the warewash machine for spraying onto the wares during at least part of a rinsing operation of a ware cleaning cycle.

A dishwasher uses washing water containing microbubbles. The dishwasher includes a flow path forming rib that defines a washing water flow path inside an upper body and a lower body of a spray arm. The dishwasher further includes a fusion rib for fusion coupling the upper body and the lower body to effectively secure a flow path structure and simplify a fastening structure.

A method of automatic dishwashing of dishware, including electrolytically generating a bleaching species, washing the dishware with a composition comprising the bleaching species, and washing the dishware with a composition including an enzyme. The invention also includes an automatic dishwasher including a wash tank, an electrochemical cell, and a first reservoir containing a composition including an enzyme, wherein the electrochemical cell contains a solution including an alkali metal chloride salt, wherein the dishwasher is configured to electrolyze the solution, and to dose the electrolyzed solution into the wash tank before dosing the composition including the enzyme into the wash tank. The invention also includes a kit for use in the method of automatic dishwashing of dishware.

A cleaning, sanitizing or disinfecting scrubbing device includes a body, a non-thermal plasma generator and damp wipe. Generated plasma activates fluid in the wipe. The device may include spacer posts between the body and wipe and a conductive mesh between the body and wipe or embedded in the wipe. Another embodiment includes a reservoir for holding a water-based fluid, a fluid delivery element connected to the reservoir by a tube through which the fluid can flow and a non-thermal plasma generator. The non-thermal plasma generator activates the fluid. In one embodiment the scrubbing device is a mitt. In another embodiment the scrubbing device is a glove.

The invention relates to a method of automatic dishwashing in a dishwasher having a wash tank, comprising: in a first step, delivering a first composition to dishware in the tank in the form of a mist; and afterwards, in a second step, delivering a second composition to the dishware in the tank in the form of a jet; wherein the first and second compositions are different, the first composition comprises a bleach, and the second composition is alkaline and comprises a builder. The invention also provides a dishwasher adapted to carry out the inventive method.

An extraction cleaner is provided with a removable recovery tank having a recovery container, a drain opening quick-empty valve, and an actuator assembly for emptying the recovery container. The drain opening can be provided on a lower portion of the recovery container. The actuator assembly can selectively open the valve. At least a portion of the actuator assembly can be provided on an upper portion of the recovery container.

A cleaning, sanitizing or disinfecting scrubbing device includes a body, a non-thermal plasma generator and damp wipe. Generated plasma activates fluid in the wipe. The device may include spacer posts between the body and wipe and a conductive mesh between the body and wipe or embedded in the wipe. Another embodiment includes a reservoir for holding a water-based fluid, a fluid delivery element connected to the reservoir by a tube through which the fluid can flow and a non-thermal plasma generator. The non-thermal plasma generator activates the fluid. In one embodiment the scrubbing device is a mitt. In another embodiment the scrubbing device is a glove.