Structure of casing for refrigeration device and method of producing the casing

摘要

A component mounting plate ( s1 ) of a casing for a refrigeration system includes an inner sub-plate ( 2 ), an outer sub-plate ( 3 ) and a heat insulating layer ( 4 ) filled with a heat insulating material, such as urethane. The inner sub-plate ( 2 ) is formed with a mounting hole ( 31 ) through which a mounting bolt ( 30 ) for mounting a component ( 16 ) to the inner sub-plate ( 2 ) passes. The heat insulating layer ( 4 ) contains a nut ( 40 ) disposed to correspond to the mounting hole ( 31 ) and an L-piece ( 41 ) disposed to correspond to the mounting hole ( 31 ) and including an extension ( 43 ) and a seat ( 42 ) with the nut ( 40 ) welded thereto. The L-piece is disposed in the heat insulating layer ( 4 ) with the seat ( 42 ) in contact with the inner sub-plate ( 2 ) and the extension ( 43 ) extending towards the outer sub-plate ( 3 ).