A food wash reference fluid delivery apparatus includes a portable reference fluid reservoir comprising an inlet and an outlet and configured to store a reference fluid that includes a predetermined concentration of an analyte, a pump fluidly coupled to the outlet of the portable reference fluid reservoir and configured to pump the reference fluid from the outlet of the portable reference fluid reservoir, a sensor connector configured to fluidly couple with a sensor positioned along a fluid flow path of the food wash system, a sensor fluid line configured to provide the reference fluid from the pump to the sensor connector, an inlet fluid line configured to provide the reference fluid from the pump to the inlet of the portable reference fluid reservoir, and a valve configured to adjustably control a fluid flow rate of the reference fluid through the sensor fluid line and the inlet fluid line.

A roller brush bed and a fluid delivery system are provided. The fluid deliver system includes a fluid source, a fluid supply tube connected to the fluid source, a movable fluid delivery bar in fluid communication with the fluid supply tube and a drive system attached to the movable fluid delivery bar and configured to move the movable fluid delivery bar relative to the at least one roller brush and along the roller brush bed, wherein the movable fluid delivery bar is configured to spray fluid toward the at least one roller brush as the movable fluid delivery bar is moved along the roller brush bed.

A produce wash system is provided. The produce wash system includes a produce line with a short-term wash device followed by a wash device, a short-term wash treatment that is applied by the short-term wash device to a product, wherein the short-term wash treatment remains on the product for a pretreatment time that lasts until the product reaches the wash device, and a wash treatment that is applied by the wash device to the product, wherein the wash treatment rinses the short-term wash treatment from the product defining the end of the pretreatment time. The pretreatment time is set at or below a damage threshold time beyond which the short-term wash treatment damages the product beyond a damage threshold.

A produce wash system is provided. The produce wash system includes a produce line with a short-term wash device followed by a wash device, a short-term wash treatment that is applied by the short-term wash device to a product, wherein the short-term wash treatment remains on the product for a pretreatment time that lasts until the product reaches the wash device, and a wash treatment that is applied by the wash device to the product, wherein the wash treatment rinses the short-term wash treatment from the product defining the end of the pretreatment time. The pretreatment time is set at or below a damage threshold time beyond which the short-term wash treatment damages the product beyond a damage threshold.

A fruit and vegetable washer includes a housing, an upper cover, a spin-and-turbulence unit, a power unit, a control assembly, a cleaning basket and a stabilizing shaft. A polygonal accommodating chamber is formed in the housing. The cleaning basket is cylindrical and is mounted rotatably in the accommodating chamber. Because of the polygonal cross section of the accommodating chamber of the housing and the circular cross section of the cleaning basket, the space between the accommodating chamber and the cleaning basket has a circular inner surface and a rectangular outer surface. When water fills up the space and the power unit starts to rotate the cleaning basket, the water will flow between the rectangular outer surface and the circular inner surface and keep pushing the inner surface of the accommodating chamber, producing complex turbulent flows and fully cleaning the fruits and vegetables inside the cleaning basket.

A fruit and vegetable washer includes a housing, an upper cover, a spin-and-turbulence unit, a power unit, a control assembly, a cleaning basket and a stabilizing shaft. A polygonal accommodating chamber is formed in the housing. The cleaning basket is cylindrical and is mounted rotatably in the accommodating chamber. Because of the polygonal cross section of the accommodating chamber of the housing and the circular cross section of the cleaning basket, the space between the accommodating chamber and the cleaning basket has a circular inner surface and a rectangular outer surface. When water fills up the space and the power unit starts to rotate the cleaning basket, the water will flow between the rectangular outer surface and the circular inner surface and keep pushing the inner surface of the accommodating chamber, producing complex turbulent flows and fully cleaning the fruits and vegetables inside the cleaning basket.

A pneumatic pressure pulse cleaning machine includes a container body, which has a rear side to which a container cover is rotatably mounted and also has an interior space in which a pipe assembly that includes pipes connected together to form a grating configuration is received. The pipe assembly has a plurality of through holes formed therein and facing upwards. A support board is received in the interior space and arranged above the pipe assembly so that an article disposition zone is provided in the container body above the support board. The pipe assembly includes a joint, which is connectable with a tube for connection with a pneumatic pressure source. Articles to be washed are positioned on the support board. The pneumatic pressure source is activated to generate pneumatic pressure pulses that are ejected through the through holes to impinge and thus clean the articles.

A pneumatic pressure pulse cleaning machine includes a container body, which has a rear side to which a container cover is rotatably mounted and also has an interior space in which a pipe assembly that includes pipes connected together to form a grating configuration is received. The pipe assembly has a plurality of through holes formed therein and facing upwards. A support board is received in the interior space and arranged above the pipe assembly so that an article disposition zone is provided in the container body above the support board. The pipe assembly includes a joint, which is connectable with a tube for connection with a pneumatic pressure source. Articles to be washed are positioned on the support board. The pneumatic pressure source is activated to generate pneumatic pressure pulses that are ejected through the through holes to impinge and thus clean the articles.

A mounting assembly 100 for mounting a roller brush 12 onto a cleaning apparatus includes a mounting flange 102 and an end cap 104 interconnected together by extension springs 176 spanning therebetween. An idle shaft 106 is slidably mounted in the mounting flange 102 by a bearing interface 108. The distal end of the idle shaft 106 is fixed to the end cap 104 so that the springs 176 that urge the end cap 104 into engagement with the mounting flange 102 also bias the idle shaft to extend forwardly of the mounting flange while also permitting the idle shaft to retract to facilitate assembly and disassembly of the roller brush with the mounting assembly 100. The bearing interface 108 is designed to permit the projecting proximal end of the idle shaft to tilt upwardly to facilitate engagement with and disengagement from the roller brush 12.

A mounting assembly 100 for mounting a roller brush 12 onto a cleaning apparatus includes a mounting flange 102 and an end cap 104 interconnected together by extension springs 176 spanning therebetween. An idle shaft 106 is slidably mounted in the mounting flange 102 by a bearing interface 108. The distal end of the idle shaft 106 is fixed to the end cap 104 so that the springs 176 that urge the end cap 104 into engagement with the mounting flange 102 also bias the idle shaft to extend forwardly of the mounting flange while also permitting the idle shaft to retract to facilitate assembly and disassembly of the roller brush with the mounting assembly 100. The bearing interface 108 is designed to permit the projecting proximal end of the idle shaft to tilt upwardly to facilitate engagement with and disengagement from the roller brush 12.