Refrigerator or freezer walls
AssigneeElectrolux Research & Innovation Aktiebolag
InventorRutger A. Roseen
Life of this patent
Estimating the term…
Abstract
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).
Claims9
Electric refrigerator or freezer cabinet comprising a wall which defines at least one hermetically sealed heat insulated space (14), said space containing a heat insulating material which mechanically stiffens the wall and communicating with a vacuum creating device (18) via an evacuation conduit (17), the vacuum creating device being a permanently installed unit in the cabinet which is activated when the cabinet has been installed for use and, after a long period of running, creates a suitable underatmospheric pressure in the space (14).
Dependencies are inferred from the claim text.