Container having passive controlled temperature interior, and method of construction
AssigneeMinnesota Thermal Science, LLC
InventorWilliam N. Mayer
Life of this patent
Estimating the term…
Abstract
A method and apparatus for shipping articles under controlled temperature conditions, by providing an article enclosure surrounded by a set of hollow walls, and at least partially filling the hollow walls with phase change material, and providing an insulating enclosure about the article enclosure, the insulating enclosure having a relatively high “R” factor for restricting the flow of thermal flux into and out of the article enclosure.
Claims10
An apparatus for shipping an article under controlled temperature conditions, comprising:
- (a) a first volume sized for containment of said article, and a first enclosure surrounding said first volume;
- said first enclosure having a double-walled construction with a second volume sealed between said double walls;
- (b) a phase change material at least partially filling said second volume;
- (c) at least a partial coating of a non-soluble crystalline material which will promote the formation of ice crystals in the phase change material;
- and
- (d) at least one relief vent into said second volume through one of said double walls, said relief vent having the characteristic of equalizing the air pressure between the second volume and the exterior of said enclosure, and the further characteristic of being impervious to the passage of said phase change material;
- and
- (e) a plurality of insulating walls surrounding said first enclosure, at least one of said plurality of insulating walls being removable to provide access to the interior of said first enclosure.
A container defining a retention chamber for shipping articles contained within the retention chamber under controlled temperature conditions, comprising:
- (a) an outer layer of an insulating material having a first uniform thickness except at any corners or edges wherein the thickness of the outer layer is at least as great as the first uniform thickness, and completely surrounding the retention chamber, and
- (b) an inner layer of a phase change material retained within a hollow double-walled structure having an interior surface with a coating of a non-soluble crystalline material on at least a portion of the interior surface, the inner layer of phase change material having a second uniform thickness except at any overlapping corners or edges wherein the thickness of the inner layer is at least as great as the second uniform thickness, and completely surrounding the retention chamber.
Dependencies are inferred from the claim text.