Electrolux Research & Innovation Aktiebolag

Other

Rutger A Roseen

Method and an apparatus for registering and supervision of the positions and time of storage of articles entered into a cabinet or other delimited space. A preferred fields of application is refrigerators in which one or several cameras at selected occasions take pictures of the interior of the refrigerator. These pictures are treated in an image analyzer which transfers clear pictures of all articles stored on each shelf in the refrigerator to a computer for registration. In the computer there is stored for each article information on the time of entry in a list containing article denominations. For distance communication the computer can be connected to a central computer having information about all articles marketed on a national basis and including both pictures and denominations.

Method and apparatus for keeping a check on the storage time for goods in a storage

Heat insulation is provided for a refrigerator or freezer. The insulation includes a closed cell material, which is placed in a hermetically closed space (13) surrounded by a diffusion-tight shell. The space communicates with a vacuum source, and a gas diffuses through the cells five times faster than air gasses. The material does not achieve its full insulating properties until the refrigerator has been used.

Insulation for refrigerators and freezers

This invention relates to an electric refrigerator or freezer. The cabinet comprises one or several hermetically sealed heat insulated spaces (14) which are wall or door panels of the cabinet. The space or spaces communicate with a vacuum creating device (18) via an evacuation conduit (17). A vacuum creating device is a permanently installed unit in the cabinet which is arranged to be activated when or after the cabinet has been installed by the user of the cabinet. After a long period of running the vacuum device creates a suitable underatmospheric pressure in the space or spaces (14).

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Lidingo, Sweden

Rutger A Roseen