Irradiation cell conveyor system

• US 4,852,138 A
• Filed: 03/19/1987
• Issued: 07/25/1989
• Est. Priority Date: 03/20/1986
• Status: Expired due to Fees

• Current Assignee: Conservatome Dagneux 01120 Montluel France
• Original Assignee: Conservatome
• Inventors: Pellerin, Daniel, Rochette, Vincent, Rubert, Andre, Bergeret, Marcel
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Hynds, Joseph A.
• Application Number:
  US07/027,949
• Time in Patent Office: 859 Days
• Field of Search: 378/68, 378/69, 378/64, 250/492.1, 250/492.3, 250/453.1, 250/454.1, 250/455.1
• US Class Current: 378/69
• CPC Class Codes: A23L 3/263 with corpuscular or ionising radiation, i.e. X, alpha, beta or omega radiation laser plasma radiation A23L3/26
• CPC Class Codes: B65B 55/16 by irradiation

Abstract

A conveyor is provided for use in an irradiation cell to transport goods to be irradiated past a radiation source panel. The conveyor has a plurality of irradiation conveyor lines parallel to the source panel, which "parallel" lines are independent of each other. Transfer conveyor lines, perpendicular to the alignment of the "parallel" conveyor lines and the source panel, and located outwardly of the ends of the source panels and crossing the extended paths of the irradiation conveyor lines, are provided for transferring goods to be irradiated to the parallel conveyor lines and for permitting direct exposure of two sides of goods to the same panel.

Claims

1. In an irradiation cell comprising a gamma radiation source panel in the cell to simultaneously irradiate an entire load constituted of a plurality of similar or different products of all dimensions, loaded and conveyed through the cell on movable platforms, the improvement comprising a conveyor means at least partially contained inside said irradiation cell containing one irradiation source panel and said conveyor means comprises:

(a) a plurality of irradiation conveyor lines independent from each other, in generally parallel conveying relation to each other, and located on either side of the radiation source panel;

(b) a plurality of transfer conveyor lines generally perpendicular to the alignment of the source panel, located on each side of the source panel and positioned adjacent to said irradiation conveyor lines for feeding and removing the products to be treated to and from said irradiation conveyor lines, said transfer conveyor lines of comprising means for receiving products to be irradiated and discharging irradiated products by conveyor lines communicating with the outside of the cell; and

(c) said irradiation conveyor lines and transfer conveyor lines comprising means for directly subjecting to irradiation opposite sides of each product carried by said irradiation conveyor.

3. The irradiation cell as in any one of claims 1 or 2, wherein the conveyor lines are supported from the floor of the cell.

4. The irradiation cell as in any one of claims 1 or 2, wherein the conveyor lines are suspended within the cell.

5. The irradiation cell as in any one of claims 1 or 2, wherein the distance of each of the irradiation conveyor lines from the source panel is individually adjustable.

6. The irradiation cell as in any one of claims 1 or 2, including means for conveying at a constant speed the loads being conveyed on the irradiation conveyor lines and/or the transfer conveyor lines.

7. The irradiation cell as in any one of claims 1 or 2, including means for conveying at a variable speed the loads conveyed on the irradiation conveyor lines and/or the transfer conveyor lines.

8. The irradiation cell as in any one of claims 1 or 2, including means for operating the irradiation conveyor lines and/or transfer conveyor lines in two directions.

9. The irradiation cell as in any one of claims 1 or 2, wherein the conveyor lines comprise means for conveying product loaded on palettes.

10. The irradiation cell as in any one of claims 1 or 2, wherein the conveyor lines comprise means for conveying product parcels of varying dimension.

11. The irradiation cell as in any one of claims 1 or 2, wherein the conveyor lines comprise means for conveying similar product loads for simultaneous irradiation.

12. The irradiation cell as in any one of claims 1 or 2, wherein the conveyor lines comprise means for conveying different product loads for simultaneous irradiation.

13. The irradiation cell as in any one of claims 1 or 2, wherein the conveyor lines are microprocessor or computer controlled.

2. In an irradiation cell comprising a gamma radiation source panel in the cell to simultaneously irradiate an entire load constituted of a plurality of similar or different products of all dimensions, loaded and conveyed through the cell on movable platforms, the improvement comprising the cell containing two or more parallel source panels and that the conveyor device for the movable platforms comprises:

(a) a plurality of irradiation conveyor lines independent from each other, in generally parallel conveying relation to each other and located on either side of the source panels, with one or more of the irradiation conveyor lines being located between the source panels;

(b) a plurality of transfer conveyor lines generally perpendicular to the alignment of the source panels, located on each side of said source panels and positioned adjacent to the irradiation conveyor lines for feeding and removing products to be treated to and from said irradiation conveyor lines, said transfer conveyor lines comprising means for receiving products to be irradiated and discharging irradiated products by conveyor lines communicating with the outside of the cell; and

(c) said irradiation conveyor lines and transfer conveyor lines comprising means for directly subjecting to irradiation opposite sides of each product carried by said irradiation conveyor lines.