Refrigerator or freezer walls

Details Refrigerator or freezer walls Refrigerator or freezer walls

1993-08-31

1994-11-08

Tapolcai, William E.

Refrigeration

Automatic control

Refrigeration producer

165 96, F25B 100

Patent

active

053615980

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).

REFERENCES:
patent: 3270802 (1966-09-01), Lindberg
patent: 3968831 (1976-07-01), Xenophou
patent: 3990201 (1976-11-01), Falbel
patent: 4668555 (1987-05-01), Uekado et al.

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