Reusable, sealable container which has a multiple wall construction encasing a cooling/warming material

Abstract

The present invention overcomes the disadvantages of prior thermal storage devices by combining the advantages of a sealed double wall container with a phase change thermal energy storage synthetic chemical which creates a superior portable and reusable cold/hot thermal storage container. The invention provides for a double walled container with a double walled lid. The double walled container, and lid, having thinner internal walls than the exterior walls and the hollow section between the two walls is filled with a phase change thermal energy storage synthetic chemical, and sealed. The double walled container is then pre-cooled at standard refrigerator freezer temperatures and/or heated in a hot water bath or micro-wave oven. The container can be used to store food or other items that need to be maintained cold or hot for longer periods than previously available by use of the standard water and salt based cold or hot storage chemicals.

1 . A reusable container to be used as an instant cold or hot receptacle for thermal transfer comprising: 
 a. container and lid having a double wall, where the outer container wall is thicker than the inner wall.    b. the hollow space between the outer and inner walls is filled with a phase change thermal energy synthetic chemical.    c. container and lid having a three layered wall, where the outer wall is thicker than the middle container wall, and the middle wall is thicker than the inner most wall.    d. the hollow space between the outer and middle walls is filled with air    e. the hollow space between the middle and inner walls is filled with a phase change thermal energy synthetic chemical.    
   
   
       2 . The container recited in  claim 1  wherein the phase change thermal energy synthetic chemical is an ethylene glycol or propylene glycol, and any other phase change thermal energy synthetic chemical available in the market.  
   
   
       3 . The container recited in  claim 1  may be comprised of multiple isolated chambers.  
   
   
       4 . The container recited in  claim 1  may be comprised of multiple isolated layers.  
   
   
       5 . The container recited in  claim 1  provides a superior performing cold or hot thermal storage system.