Back to results
US 3,990,505 AGranted
Air-conditioning systems
AssigneeAssociated Engineering Limited
InventorChristopher John Davenport
Life of this patent
Estimating the term…
Abstract
An air-conditioning system particularly, but not exclusively, for vehicles employs a single liquid/air heat exchanger and means selectively to supply either hot liquid or cooled liquid to said heat exchanger whereby selectively to heat or cool the air passing through said heat exchanger. As applied to a motor vehicle, the system only requires a single heat exchanger on the interior side of the vehicle bulkhead.
Claims5
An air-conditioning system comprising:
- a liquid/air heat exchanger;
- a two-way valve having two inlets and an outlet;
- means connecting said valve outlet to said liquid/air heat exchanger;
- means for supplying a heated liquid to one inlet of said valve;
- means for feeding liquid from said liquid/air heat exchanger to a refrigerant/liquid heat exchanger;
- a refrigerating circuit for feeding a refrigerant to said refrigerant/liquid heat exchanger;
- means for feeding cooled liquid from said refrigerant/liquid heat exchanger to the other inlet of said valve;
- means for selectively operating said two-way valve so as to feed either said heated liquid, or cooled liquid from said refrigerant/liquid heat exchanger, to said liquid/air heat exchanger;
- and
- means for entraining a flow of air through said liquid/air heat exchanger.
7 more elements
A vehicle air-conditioning system for a vehicle having an engine cooled by a liquid coolant, said system comprising:
- a liquid/air heat exchanger;
- a two-way valve having two inlets and an outlet;
- means connecting said valve outlet to said liquid/air heat exchanger;
- means for supplying heated liquid engine coolant to one inlet of said valve;
- means for feeding said liquid engine coolant from said liquid/air heat exchanger to a refrigerant/liquid heat exchanger;
- a refrigerating circuit for feeding a refrigerant to said refrigerant/liquid heat exchanger;
- means for feeding cooled liquid engine coolant from said refrigerant/liquid heat exchanger to the other inlet of said valve;
- means for selectively operating said two-way valve so as to feed either said heated liquid, or cooled liquid from said refrigerant/liquid heat exchanger, to said liquid/air heat exchanger;
- and
- means for entraining a flow of air through said liquid/air heat exchanger to the interior of said vehicle.
7 more elements
Dependencies are inferred from the claim text.