Abstract: For effective and energy-saving cooling of articles using straightforward designs, a refrigeration unit, in particular a refrigerated cabinet, freezer cabinet, refrigerated island or refrigerated counter, for storing and/or displaying articles, having a refrigeration chamber for the articles, and having a channel, which is assigned to the refrigeration chamber and is intended for supplying air, wherein two air flows can flow out of an outlet of the channel at different flow speeds and form a double protective air curtain in front of an access to the refrigeration chamber, is configured so that the channel has an element which acts on the supplied air so that the supplied air is divided up into the two air flows with different flow speeds by the element.

Abstract: An example embodiment relates to a device and a method for administering data that are related to a complex object composed of a plurality of components when said complex object is modified, wherein at least a portion of the components goes through a series of assembly stages during this modification. The interrelationships of the components may be recorded in a databank by means of relationship data for each assembly stage.