Double-layer square insulated container

Abstract

A double-layer square insulated container includes a cuboid container body, which includes an inner liner and an outer shell, between which a vacuum layer is arranged. Reinforcing ribs are arranged on each of the inner liner and the outer shell and can make a surface of the square container evenly stressed during vacuumizing to avoid being crushed by suction. Reinforcing ribs are added to a surface of a mold. When the height of the reinforcing ribs is set to about 2 mm, the square surface is evenly stressed. Moreover, by repeated tests, the thickness of the inner liner and the outer shell is only about 0.5 mm, such that the weight of the square container is greatly reduced. Reinforcing ribs in different shapes are added to the periphery and bottom surface of the square container, which ensures support force of steel walls and improves the appearance.

1 . A double-layer square insulated container, comprising:
 a container body, the container body comprising:
 an inner liner, 
 an outer shell, 
 a vacuum layer, the vacuum layer being arranged between the inner liner and the outer shell, and 
 reinforcing ribs, the reinforcing ribs being arranged on each of the inner liner and the outer shell; 
   wherein the container body is in a shape of a cuboid as a whole; and   wherein the reinforcing ribs are configured to make a surface of the double-layer square insulated container evenly stressed during vacuumizing to avoid being crushed by suction.   
     
     
         2 . The double-layer square insulated container according to  claim 1 , wherein a thickness of the outer shell is 0.48 mm-0.60 mm. 
     
     
         3 . The double-layer square insulated container according to  claim 2 , wherein a thickness of the inner liner is 0.45 mm-0.55 mm. 
     
     
         4 . The double-layer square insulated container according to  claim 3 , wherein a height of the reinforcing ribs is 1.5 mm-2.2 mm. 
     
     
         5 . The double-layer square insulated container according to  claim 1 , further comprising container opening reinforcing ribs, wherein the container opening reinforcing ribs are arranged on two opposite side walls of a container opening of the outer shell to avoid deformation during vacuumizing. 
     
     
         6 . The double-layer square insulated container according to  claim 5 , wherein support surfaces of the container opening reinforcing ribs are perpendicular to each other. 
     
     
         7 . The double-layer square insulated container according to  claim 1 , wherein reinforcing ribs are further arranged at a bottom of the inner liner and a bottom of the outer shell. 
     
     
         8 . The double-layer square insulated container according to  claim 1 , wherein the outer shell is fixedly arranged outside the inner liner by welding, and welding points between the outer shell and the inner liner are distributed around a container opening of the outer shell. 
     
     
         9 . The double-layer square insulated container according to  claim 1 , wherein a bottom of the outer shell is formed with vacuum holes. 
     
     
         10 . The double-layer square insulated container according to  claim 2 , wherein a bottom of the outer shell is formed with vacuum holes. 
     
     
         11 . The double-layer square insulated container according to  claim 3 , wherein a bottom of the outer shell is formed with vacuum holes. 
     
     
         12 . The double-layer square insulated container according to  claim 4 , wherein a bottom of the outer shell is formed with vacuum holes. 
     
     
         13 . The double-layer square insulated container according to  claim 5 , wherein a bottom of the outer shell is formed with vacuum holes. 
     
     
         14 . The double-layer square insulated container according to  claim 6 , wherein a bottom of the outer shell is formed with vacuum holes. 
     
     
         15 . The double-layer square insulated container according to  claim 7 , wherein the bottom of the outer shell is formed with vacuum holes. 
     
     
         16 . The double-layer square insulated container according to  claim 8  wherein a bottom of the outer shell is formed with vacuum holes.