Refrigerator with efficient cold accumulator

DETAILED DESCRIPTION Accordingly, an object of the present invention is to provide a cold preserving container or refrigerator which can cool a cold accumulation component rapidly and efficiently and can increase the capacity of the cold accumulation component easily without decreasing the inside capacity space of the container.
Directed to achieving this object, a cold preserving container is herein provided.
The container includes a heat insulating chamber formed by an inner box defining the chamber, an outer box covering the inner box and heat insulating material between the inner box and the outer box.
The inside of the heat insulating chamber is cooled by circulating a cooling medium through an evaporating tube disposed on an outer surface of the inner box.
Also means for cold accumulation, enclosing a cold regenerative material, is disposed between the evaporating tube and the heat insulating material, covers the evaporating tube and is covered by the heat insulating material.
In the cold preserving container, since the cold accumulation means covers the evaporating tube and directly contacts the tube without any significant amount of air therebetween, the cold accumulation means can be rapidly and efficiently cooled by the tube and the inside of the heat insulating chamber is cooled by the tube.
Moreover, since the cold accumulation means is covered with the heat insulating material, the cold regenerative material enclosed in the cold accumulation means can efficiently accumulate and hold cold.
Accordingly, the cold accumulation means can be rapidly cooled to the desired temperature, and during this cooling, excessive cooling of the inside of the heat insulating chamber can be prevented.
Since the cold accumulation means is disposed between the inner box and the outer box, the capacity and size of the means is essentially independent of the capacity and size of the inside space of the heat insulating chamber.
Therefore, the capacity of the cold accumulation means can be easily increased in comparison with that in the conventional container, thereby significantly increasing the cold preserving time of the container