Airplane
AssigneeDeutsche Lufthansa AG
InventorHarald Merensky
Life of this patent
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Abstract
In the airplane of the present invention, a part of the outer skin (10) is not provided with an insulating layer (11). A cold air chamber (13) is provided behind this part being in heat exchange with the ambient air via the outer skin (10). A flow-in duct leads from the cold air chamber (13) to the cooling chamber (16) and a flow-out duct (21) leads from the cooling chamber (16) back to the cold air chamber (13). The cold air chamber (13) and the cooling chamber (16) form a closed recirculation system, thereby cooling the cooling chamber (16) suited for receiving a service trolley (29). A thermostat (25) controls air quantity regulating valves (22;24) and a van (23) in order to maintain a desired temperature within the cooling chamber (16).
Claims20
An airplane cooling system for cooling a cooling chamber accessible to a passenger compartment and within which perishable food products are adapted to be stored during flight comprising an outer skin defining an interior pressurized compartment, means within said interior pressurized compartment and adjacent a portion of said outer skin for defining therewith a cold air chamber adapted to be maintained relatively cold by cold temperature conduction from exterior ambient air through said outer skin portion, means within said interior pressurized compartment and remote from said outer skin portion for defining a cooling chamber, means for circulating air between said cold air and cooling chambers, means for regulating the air circulation between said cold air and cooling chambers to maintain a desired temperature in said cooling chamber, and means for effecting access between said cooling chamber and a passenger compartment of said interior pressurized compartment to thereby introduce or remove perishable food products relative to said cooling chamber.
Dependencies are inferred from the claim text.