Motor-car radiator

Claim 2

A radiator operable with a flow of air for cooling a quantity of water, comprising a plurality of pipes positioned generally in parallel forming a substantially flat wall member having thickness L in the range of 1 - 25 mm. and connection elements connecting the pipes in heat transfer relationship, with transverse ducts defined through said wall between said connection elements, the ducts having length L and hydraulic diameter d h , with a ratio L/d h < 15, said radiator comprising at least two of said wall members, each having top and bottom parts and side edges, said two wall members each defining a plane therein and forming in top plan view a V-shape when positioned with respect to a vertical front reference plane, for air flow into the open side of the V toward the closed part, each wall positioned to define an angle α of at least 45° with said reference plane, said angles α being two angles of the triangle formed by said V-shape and reference plane, junction means joining adjacent edges of said wall members along their vertical length and thereby providing a substantially airtight seal, the radiator further comprising inlet and outlet means respectively for receiving into and discharging water from said pipes, said two joined wall members comprising a pair, said radiator being formed of at least two of said pairs forming in top plan view a zig-zag design with adjacent front edges of the two V's joined together along their vertical length in a substantially air-tight seal.

Claim 3

Apparatus according to claim 1 wherein said junction of front edges has a curved aerodynamic shape to receive air flow thereagainst.

Claim 4

A radiator as claimed in claim 1, characterized in that each of the connections on the rear side of the elements is constructed as a channel-shaped connection member for receiving contaminations.

Claim 5

A radiator as claimed in claim 3, characterized in that the channel-shaped connection members communicate on their lower side with an exhaust channel which extends below the radiator and whose aperture faces the front side of the radiator

Claim 6

A radiator as claimed in claim 1, characterized in that each of the elements comprises on its outer circumference a layer a fine gauze having a mesh-width smaller than 1.5 mm.

Claim 7

A radiator comprising at least one pair of substantially flat wall members having adjacent edges joined, forming a V-shape at the top and bottom ends thereof, junction means joining said adjacent edges, the closed part of the V being the rear of the radiator and the open part of the V being the front thereof, each wall member comprising a plurality of generally parallel pipes, a plurality of connection elements connecting said pipes in heat-transfer relationship and defining between these elements air ducts transverse of the plane of said wall member, the duct length being defined by the wall thickness having dimension L which is a maximum of 25 mm., the ducts also having a hydraulic diameter d h , where L/d h is less than 15, the radiator further comprising means for receiving water into and for discharging water from said pipes, said radiator comprising at least first and second of said V-shaped structures oriented similarly, with one wall member of one structure adjacent one wall member of the other structure, with adjacent front edges, second junction means joining said adjacent front edges along the length thereof, whereby the radiator defines in top and bottom views a zig-zag design.

Claim 8

A radiator comprising at least one pair of substantially flat wall members having adjacent edges joined, forming a V-shape at the top and bottom ends thereof, junction means joining said adjacent edges, the closed part of the V being the rear of the radiator and the open part of the V being the front thereof, each wall member comprising a plurality of generally parallel pipes, a plurality of connection elements connecting said pipes in heat-transfer relationship and defining between these elements air ducts transverse of the plane of said wall member, the duct length being defined by the wall thickness having dimension L which is a maximum of 25 mm., the ducts also having a hydraulic diameter d h , where L/d h is less than 15, the radiator further comprising means for receiving water into and for discharging water from said pipes, said radiator comprising at least first and second of said V-shaped structures oriented similarly, with one wall member of one structure adjacent one wall member of the other structure, with adjacent front edges, second junction means joining said adjacent front edges along the length thereof, whereby the radiator defines in top and bottom views a zig-zag design.

Claim 9

Apparatus according to claim 6 wherein said second junction means has a curved aerodynamic shape to receive air flow thereagainst.

Claim 10

A heat exchanger operable with a flow of a gas for cooling a quantity of a fluid, comprising a plurality of pipes positioned generally in parallel forming a substantially flat wall member having thickness L in the range of 1 - 25 mm. and connection elements connecting the pipes in heat transfer relationship, with transverse ducts defined through said wall between said connection elements, the ducts having length L and hydraulic diameter d h , with a ratio L/d h < 15, said heat exchanger comprising at least two of said wall members, each having top and bottom parts and side edges, said two wall members each defining a plane therein and forming in top plan view a V-shape when positioned with respect to a vertical front reference plane, for gas flow into the open side of the V toward the closed part, each wall positioned to define an angle α of at least 45° with said reference plane, said angles α being two angles of the triangle formed by said V-shape and reference plane, junction means joining adjacent edges of said wall members along their vertical length and thereby providing a substantially gastight seal, the heat exchanger further comprising inlet and outlet means respectively for receiving into the discharging said fluid from said pipes, said two joined wall members comprising a pair, said heat exchanger being formed of at least two of said pairs forming in top plan view a zig-zag design with adjacent front edges of the two V's joined together along their vertical length in a substantially gas-tight seal.

Claim 11

A heat exchanger operable with a flow of a gas for cooling a quantity of a fluid, comprising a plurality of pipes positioned generally in parallel forming a substantially flat wall member having thickness L in the range of 1 - 25 mm. and connection elements connecting the pipes in heat transfer relationship, with transverse ducts defined through said wall between said connection elements, the ducts having length L and hydraulic diameter d h , with a ratio L/d h < 15, said heat exchanger comprising at least two of said wall members, each having top and bottom parts and side edges, said two wall members each defining a plane therein and forming in top plan view a V-shape when positioned with respect to a vertical front reference plane, for gas flow into the open side of the V toward the closed part, each wall positioned to define an angle α of at least 45° with said reference plane, said angles α being two angles of the triangle formed by said V-shape and reference plane, junction means joining adjacent edges of said wall members along their vertical length and thereby providing a substantially gastight seal, the heat exchanger further comprising inlet and outlet means respectively for receiving into the discharging said fluid from said pipes, said two joined wall members comprising a pair, said heat exchanger being formed of at least two of said pairs forming in top plan view a zig-zag design with adjacent front edges of the two V's joined together along their vertical length in a substantially gas-tight seal.

Claim 12

A heat exchanger comprising at least one pair of substantially flat wall members having adjacent edges joined, forming a V-shape at the top and bottom ends thereof, junction means joining said adjacent edges, the closed part of the V being the rear of the heat exchanger and the open part of the V being the front thereof, each wall member comprising a plurality of generally parallel pipes, a plurality of connection elements connecting said pipes in heat-transfer relationship and defining between these elements ducts transverse of the plane of said wall member, the duct length being defined by the wall thickness having dimension L which is a maximum of 25 mm., the ducts also having a hydraulic diameter d h , where L/d h is less than 15, the heat exchanger further comprising means for receiving a fluid into and for discharging said fluid from said pipes, said head exchanger comprising at least first and second of said V-shaped structures oriented similarly, with one wall member of one structure adjacent one wall member of the other structure, with adjacent front edges, second junction means joining said adjacent front edges along the length thereof, whereby the heat exchanger defines in top and botton views a zig-zag design.

Claim 13

A heat exchanger comprising at least one pair of substantially flat wall members having adjacent edges joined, forming a V-shape at the top and bottom ends thereof, junction means joining said adjacent edges, the closed part of the V being the rear of the heat exchanger and the open part of the V being the front thereof, each wall member comprising a plurality of generally parallel pipes, a plurality of connection elements connecting said pipes in heat-transfer relationship and defining between these elements ducts transverse of the plane of said wall member, the duct length being defined by the wall thickness having dimension L which is a maximum of 25 mm., the ducts also having a hydraulic diameter d h , where L/d h is less than 15, the heat exchanger further comprising means for receiving a fluid into and for discharging said fluid from said pipes, said head exchanger comprising at least first and second of said V-shaped structures oriented similarly, with one wall member of one structure adjacent one wall member of the other structure, with adjacent front edges, second junction means joining said adjacent front edges along the length thereof, whereby the heat exchanger defines in top and botton views a zig-zag design.