Refrigerated catering service trolley and installation for reloading refrigerating agent
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorClaude Gibot
Life of this patent
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Abstract
Provided are catering service trolleys for preserving and distributing meal service trays in aeroplanes. The trolley includes side walls with double shells defining vertical channels opening at their upper part into the housing containing the refrigerating agent and at their lower part in the proximity of the bottom of the section receiving the meal-trays, thus enabling the refrigerating gas to circulate by convection over the whole height of the trolley and a more homogeneous temperature distribution.
Claims18
A trolley for preserving and distributing foodstuffs comprising a metallic structure comprising:
- an opening for inserting and removing the foodstuff;
- an upper compartment comprising a receptacle for receiving a removable tank designed to include a refrigerating agent;
- a lower foodstuffs compartment, including a bottom wall,
- at least two side walls comprising an inner metal plate and an outer metal plate separated by a layer of insulating material,
- gas circulation ducts delimited between the inner metal plate and the insulating material, wherein said ducts include upper and lower parts which open, respectively, into the receptacle of the upper compartment, in which the tank containing the refrigerating agent is located, and into a lower part of the foodstuffs compartment, and wherein said ducts are effective to establish natural convection circulation of the refrigerating agent within the ducts and in the lower part of the trolley.
A trolley for preserving and distributing foodstuffs comprising a metallic structure comprising:
- an opening for inserting and removing the foodstuff;
- an upper compartment comprising a receptacle for receiving a removable tank designed to include a refrigerating agent;
- a lower foodstuffs compartment, including a bottom wall,
- at least two side walls comprising an inner metal plate and an outer metal plate separated by a layer of insulating material,
- gas circulation ducts delimited between the inner metal plate and the insulating material, wherein said ducts include upper and lower parts which open, respectively, into the receptacle of the upper compartment, in which the tank containing the refrigerating agent is located, and into a lower part of the foodstuffs compartment, wherein the layer of insulating material further comprises ribs which are in contact with the inner plate and which delimit said ducts between them.
A trolley for preserving and distributing foodstuffs comprising a metallic structure comprising:
- an opening for inserting and removing the foodstuff;
- an upper compartment comprising a receptacle for receiving a removable tank designed to include a refrigerating agent;
- a lower foodstuffs compartment, including a bottom wall,
- at least two side walls comprising an inner metal plate and an outer metal plate separated by a layer of insulating material,
- gas circulation ducts delimited between the inner metal plate and the insulating material, wherein said ducts include upper and lower parts which open, respectively, into the receptacle of the upper compartment, in which the tank containing the refrigerating agent is located, and into a lower part of the foodstuffs compartment, further comprising vertical battens between the inner plate and the layer of insulating material.
A trolley for preserving and distributing foodstuffs comprising a metallic structure comprising:
- an opening for inserting and removing the foodstuff;
- an upper compartment comprising a receptacle for receiving a removable tank designed to include a refrigerating agent;
- a lower foodstuffs compartment, including a bottom wall,
- at least two side walls comprising an inner metal plate and an outer metal plate separated by a layer of insulating material,
- gas circulation ducts delimited between the inner metal plate and the insulating material, wherein said ducts include upper and lower parts which open, respectively, into the receptacle of the upper compartment, in which the tank containing the refrigerating agent is located, and into a lower part of the foodstuffs compartment, and further comprising two foodstuffs compartments and two receptacles for receiving a tank containing a refrigerating agent, wherein each foodstuff compartment is separated from its respective receptacle by a partition forming a thermal shield.
Dependencies are inferred from the claim text.