| 摘要 |
<p>The invention relates to a refrigerating device for food, that does not comprise an energy source or ice. Said device can be in the form of a bottle, a cylinder, an ice-tray, a bucket or an ice-box and is coated with an outer casing behind which there is an insulating material in the form of a sandwich, containing a capsule containing a cryogenic gas or liquid. The material of said device can be aluminum, stainless steel, copper or an alloy of metals that have good thermoconductive properties. The invention has a mouth that is closed by an insulating door or lid.</p> |
