US Patent 9927169 Insulated chamber with phase change material

An insulated chamber having an interior chamber for storing items therein includes a phase change material to facilitate controlling the temperature of the interior chamber and the items. A heating device or cooling device may be used to melt or freeze the phase change material, which may be in various locations such as the walls of the chamber or packets which may serve as shelves and may be removable from the interior chamber with the items thereon. The packets may have recesses for receiving the items. The phase change material may be within capsules which may be within a liquid or a solid matrix. Controls may be provided to control humidity and carbon dioxide within the interior chamber.