Cooling system

Claim 2

In a radiator system for providing cooling for an engine and an air-conditioner, the system including a plurality of radiator pipes for cooling medium, inlet means for distributing said medium from said engine to said pipes, and outlet means for discharging said medium from said pipes to said engine, the improvement in combination therewith comprising (a) a first member in heat-conductive contact with said pipes and defining a plurality of air ducts having generally parallel and adjacent air flow paths through which air can flow from intake ot discharge sides, said ducts each having a hydraulic diameter, d h (R) < 2/mm, length, L < 25 mm, in the direction of flow, and ratio l/d.sub. h(R) 25, and (b) a dirt collector comprising a thin, zigzag layer fixedly positioned on the intake side and transverse of said ducts, said collector being a porous member defining therein additional air ducts having a hydraulic diameter, d h (C) < 2 mm, said system further comprising a plurality of condensor pipes in heat-conductive contact with said dirt collector and operable as a condensor for fluid refrigerant flowing from said air-conditioner.

Claim 3

Apparatus according to claim 1 wherein said radiator pipes define a generally flat layer and said first member comprises a plurality of metal strips extending generally parallel to each other and also defining a generally flat layer between two radiator pipes.

Claim 4

A cooling system operable with first cooling medium for use in a combustion engine and a second cooling medium for an air-conditioner, comprising (a) a radiator having a plurality of first pipes positioned generally in a plane, inlet and outlet means for flowing said first cooling medium through said pipes, a plurality of metal part such as strips or gauze, with air ducts, defined between said parts, which part are connected to said pipes in heat-conductive contact, characterized in that said air ducts between said metal parts have a hydraulic diameter d h (R) which is smaller than 2 mm, and have thickness L of less than 25 mm, and L/d h (R) 25, L representing the thickness in the direction of air flow from front intake side to dischrge side, (b) a dirt collector formed as a thin zigzag-folded layer arranged on said front side of the radiator, and comprising passage ducts therethrough for the air, having a hydraulic diameter, d h (C) of less than 2 mm, and (c) a plurality of second pipes, inlet and outlet means for flowing said second cooling medium through said second pipes which are furthermore connected to the folded layer in heat-conductive contact.

Claim 5

A cooling system operable with first cooling medium for use in a combustion engine and a second cooling medium for an air-conditioner, comprising (a) a radiator having a plurality of first pipes positioned generally in a plane, inlet and outlet means for flowing said first cooling medium through said pipes, a plurality of metal part such as strips or gauze, with air ducts, defined between said parts, which part are connected to said pipes in heat-conductive contact, characterized in that said air ducts between said metal parts have a hydraulic diameter d h (R) which is smaller than 2 mm, and have thickness L of less than 25 mm, and L/d h (R) 25, L representing the thickness in the direction of air flow from front intake side to dischrge side, (b) a dirt collector formed as a thin zigzag-folded layer arranged on said front side of the radiator, and comprising passage ducts therethrough for the air, having a hydraulic diameter, d h (C) of less than 2 mm, and (c) a plurality of second pipes, inlet and outlet means for flowing said second cooling medium through said second pipes which are furthermore connected to the folded layer in heat-conductive contact.

Claim 6

In a radiator system for cooling a fluid, the system including a plurality of radiator pipes spaced apart and defining a generally flat layer, means for flowing said fluid into and out of said pipes, the improvement in combination therewith comprising (a) a plurality of metal strips spaced apart and extending between two adjacent pipes with a duct defined between two adjacent strips, the duct having a flow direction of length, L < 25 mm transverse of and through said layer, and havinng a hydraulic diameter d h (R) < 2 mm, and L/d h (R) < 25, the ducts having intake and exhaust ends, and (b) a dirt collector formed as a zigzag folded lyer providing inlet channels which are V-shaped in cross-section with air flowing toward the closed parts of the Vs which part are adjacent the intake side of said ducts, said folded layer being porous with air passages defined therethrough which have a hydraulic diameter d h (C) < 2 mm, said radiator system being operable with an air-conditioner, and further comprising a plurality of condensor pipes in heat conductive relationship with said dirt collector and operable as a condensor for fluid refrigerant flowing from said air-conditioner, which is cooled by air flowing through said dirt collector.

Claim 7

In a radiator system for cooling a fluid, the system including a plurality of radiator pipes spaced apart and defining a generally flat layer, means for flowing said fluid into and out of said pipes, the improvement in combination therewith comprising (a) a plurality of metal strips spaced apart and extending between two adjacent pipes with a duct defined between two adjacent strips, the duct having a flow direction of length, L < 25 mm transverse of and through said layer, and havinng a hydraulic diameter d h (R) < 2 mm, and L/d h (R) < 25, the ducts having intake and exhaust ends, and (b) a dirt collector formed as a zigzag folded lyer providing inlet channels which are V-shaped in cross-section with air flowing toward the closed parts of the Vs which part are adjacent the intake side of said ducts, said folded layer being porous with air passages defined therethrough which have a hydraulic diameter d h (C) < 2 mm, said radiator system being operable with an air-conditioner, and further comprising a plurality of condensor pipes in heat conductive relationship with said dirt collector and operable as a condensor for fluid refrigerant flowing from said air-conditioner, which is cooled by air flowing through said dirt collector.