Method and apparatus for coating fruit and vegetables
View Patent ↗One embodiment of the present invention includes an apparatus for applying a solution to a product. The apparatus may include a moving conveyor in part forming at least one pocket for receiving product, such as fruit and vegetables. The conveyor may be configured to move the product from a first position to a second position. The apparatus may also include at least one nozzle positioned between the first position and the second position. The at least one nozzle may be configured to deliver the solution into the pocket such that the product is immersed in and sprayed with the solution.
1. An apparatus for applying a solution to a product, the apparatus comprising:
a conveyor belt comprising a plurality of transverse protruding panels in part forming a plurality of pockets configured to continuously receive the product at a loading position and move the product along a length of the conveyor belt to an unloading position where the product is unloaded from the pockets, each of the pockets having at least one opening configured to drain the solution from the pocket; and
a spray chamber comprising:
at least one nozzle positioned along the length of the conveyor belt and configured to discharge the solution downwardly into each of the pockets during a movement of the pocket between the loading and unloading positions, and
at least one of a close fitting sidewall or a close fitting bottom panel configured and positioned along the length of the conveyor belt so as to substantially inhibit drainage of the solution from the at least one opening of each pocket over a first length of travel of the pocket between the loading and unloading positions and so as to not substantially inhibit drainage of the solution from the at least one opening of each pocket over second and third lengths of travel of the pocket between the loading and unloading positions, wherein the first length of travel is disposed between the second and third lengths of travel,
wherein each of the pockets is substantially drained of the solution during the second and third lengths of travel and collects the solution discharged by the nozzle during the first length of travel so that the pocket becomes substantially filled with the solution thereby coating the products carried in the pocket.
2. The apparatus according to claim 1 , wherein the at least one of a close fitting sidewall or a close fitting bottom panel comprises:
a first sidewall positioned along a first side of the conveyor belt; and
a second sidewall positioned along a second side of the conveyor belt opposite to the first side of the conveyor belt, the first and second sidewalls being spaced apart substantially the distance of a transverse width of the conveyor belt.
3. The apparatus according to claim 1 , wherein the at least one of a close fitting sidewall or a close fitting bottom panel comprises the close fitting bottom panel positioned beneath the conveyor belt.
4. The apparatus according to claim 3 , wherein the at least one opening includes a plurality of openings.
5. The apparatus according to claim 1 , further comprising a catch pan disposed below the conveyor belt and configured to collect the solution drained from the pockets.
6. The apparatus according to claim 5 , further comprising:
a reservoir to receive the solution collect by the catch pan; and
a pump fluidly connected to the reservoir and the at least one nozzle such that the solution from the reservoir is returned to the at least one nozzle.
7. The apparatus according to claim 6 , further comprising at least one of a filter and a sieve between the catch pan and the reservoir.
8. The apparatus according to claim 6 , further comprising a filter between the pump and the at least one nozzle.
9. The apparatus according to claim 6 , wherein the conveyor belt in inclined upwardly from the loading position to the unloading position.
10. The apparatus according to claim 1 , wherein the solution includes an anti-browning agent and the product includes slices of at least one of fruits and vegetables.
11. The apparatus according to claim 10 , wherein the anti-browning agent includes at least one of citric acid, ascorbic acid, and erythorbate acid.
12. The apparatus according to claim 4 , wherein the openings provide 20 to 40 percent open space in the conveyor belt.
13. The apparatus according to claim 1 , wherein the at least one nozzle discharges the solution directly into each of the pockets within the first length of travel.