Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
  • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
  • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
  • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
  • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
  • F28D1/0452—Combination of units extending one behind the other with units extending one beside or one above the other
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
  • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
  • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
  • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
  • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
  • F28D1/0435—Combination of units extending one behind the other
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
  • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
  • F01P11/04—Arrangements of liquid pipes or hoses
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
  • F28F9/02—Header boxes; End plates
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
  • B60H1/00557—Details of ducts or cables
  • B60H1/00571—Details of ducts or cables of liquid ducts, e.g. for coolant liquids or refrigerants
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
  • F01P3/00—Liquid cooling
  • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
  • F01P2003/187—Arrangements or mounting of liquid-to-air heat-exchangers arranged in series

Definitions

• the present invention relates to a radiator arrangement in a motor vehicle according to the preamble of claim 1.
• the radiator of the low- temperature cooling circuit is situated in front of the radiator of the high-temperature cooling circuit in the air passage at the front portion of the vehicle so that the coolant in the low-temperature cooling circuit is cooled by air at a lower temperature than the coolant in the high-temperature cooling circuit.
• the radiator of the high-temperature cooling circuit which cools the combustion engine needs a high capacity and is consequently of relatively large size. Conveying coolant to a forward radiator for a low-temperature cooling circuit entails fitting coolant lines which extend round the radiator of the high-temperature cooling circuit. Such coolant lines occupy space at the side of the radiator of the high-temperature cooling circuit. They therefore limit the width and consequently the capacity of the radiator of the high-temperature cooling circuit.
• the radiator arrangement thus comprises two separate radiators for cooling of media with different temperatures.
• the first radiator comprises a pipe element extending through the first radiator's inlet tank or outlet tank and adapted to conveying the second medium between one side of the first radiator's tank and an opposite side of the tank where the second radiator is situated.
• the radiators can be wider and have a larger capacity.
• the space at the side of the radiators may be used for other components of the vehicle.
• the first radiator's tanks and cooling section are situated at a distance from the second radiator's tanks and cooling section. Direct contact between the radiators will result in heat being transferred by conduction at the contact surfaces. As they are made of material with good thermally conductive characteristics, direct contact between the radiators needs as far as possible to be avoided, at least if it is intended also to maintain a temperature difference between the media even after they leave the radiators. Air has good thermally insulating characteristics.
• the radiators being at a relatively short distance from one another is usually sufficient to reduce the heat exchange between the media in them to an acceptably low level.
• the second radiator comprises a second pipe element situated in an inlet tank or an outlet tank and adapted to being connected to the first radiator's pipe element so that they constitute a composite pipeline for the second medium
• the radiator arrangement comprises at least one connecting means adapted to releasably connecting the first radiator's pipe element to the second radiator's pipe element.
• the tank comprises at least one shorter pipe element.
• the connecting means may be fitted on the pipe elements and establish a direct connection between the pipe elements of the respective radiators.
• the pipe elements are made of rigid material which in a connected state creates suspension means by which one radiator may be supported by the other radiator.
• the pipe elements create here a rigid pipeline which holds the radiators together in a specific position relative to one another. It will therefore be sufficient for example to fasten the first radiator in the vehicle when it has capacity to support the second radiator. The fastening of the radiators is thus simplified while at the same time less space will be needed for fastening them.
• the pipe elements may be made of suitable metal material. They may be of the same material as that of the respective tanks.
• the first radiator's pipe element and the second radiator's pipe element may be of different sizes, in which case part of the smaller of said pipe elements will be adapted to being fitted into the larger of said pipe elements.
• the longitudinal contact surfaces of the pipe elements will prevent movements of the pipe elements and the radiators relative to one another in any direction except that in which the pipe elements are pushed into and pulled out of one another. Movements in this direction may in a fitted state be prevented by one or more relatively simple fastening means holding the radiators together.
• Fig. 1 depicts a radiator arrangement according to the present invention as seen from above.
• Fig. 2 depicts the radiator arrangement in Fig. 1 as seen from behind
• Fig. 3a depicts a section in the plane A-A in Fig. 2,
• Fig. 5a depicts a section through the inlet tanks according to a third embodiment of the radiator arrangement
• Fig. 1 depicts schematically a vehicle 1 powered by a combustion engine 2.
• a first radiator 3 and a second radiator 4 are situated in an air passage 5 at a front portion of the vehicle.
• the first radiator 3 is intended to cool a coolant which cools the engine and circulates in a high-temperature cooling circuit of the vehicle.
• the second radiator 4 is intended to cool a coolant which circulates in a low-temperature cooling circuit of the vehicle.
• the coolant in the low-temperature cooling circuit will in most operating conditions be at a lower temperature than the coolant in the high-temperature cooling circuit.
• An air flow 6 through the air passage 5 and the radiators 3, 4 is created by a coolant fan 7 and the draught caused by the vehicle's forward movement.
• the first radiator 3 comprises a cooling section 3b in which the coolant in the high-temperature cooling circuit is cooled by air in the air passage 5.
• the coolant is conveyed in the cooling section 3b through elongate horizontal tubular elements 3bi situated at constant mutual spacing.
• a cooling air flow is arranged to pass through the cooling section 3b in the passages between these tubular elements.
• Heat transfer means 3b 2 which may be called ranks are provided in said passages to increase the air contact surface with the tubular element so that the coolant provides more effective cooling in the tubular elements 3bj.
• the heat transfer means 3b 2 may be made of sheetmetal material forming a zigzag structure, dividing the passages between adjacent tubular elements 3bj into a large number of flow ducts.
• the first radiator 3 comprises also an outlet tank 3c which receives the coolant after it has been cooled in the cooling section 3b.
• This first radiator comprises a third pipe element 13 with an aperture for leading coolant out from the radiator.
• the third pipe element 13 is adapted to being connected to a coolant hose in the high- temperature cooling circuit.
• This third pipe element is situated at an upper portion of the outlet tank 3c.
• the outlet tank 3c comprises also a fourth pipe element 14 with an aperture for leading coolant out to the low-temperature cooling circuit.
• the fourth pipe element 14 is adapted to being connected to a coolant hose in the low-temperature cooling circuit.
• This fourth pipe element extends through the outlet tank 3c in a centrally situated region 3cj which is wider than the remainder of this tank.
• the heat transfer means 4b 2 have a zigzag structure which divides the passages between adjacent tubular elements 4bj into a large number of flow ducts.
• the second radiator 4 comprises an outlet tank 4c with a sixth pipe element 16 adapted to being connected to the fourth pipe element 14 of the first radiator 3.
• the pipe elements 14, 16 constitute in a connected state a pipeline which leads coolant out from the tank 4c.
• the first radiator's inlet tank 3a is situated substantially immediately downstream of the second radiator's inlet tank 4a
• the first radiator's cooling section 3b is situated substantially immediately downstream of the second radiator's cooling section 4b
• the first radiator's outlet tank 3c is situated substantially immediately downstream of the second radiator's outlet tank 4c.
• the first radiator 3 and the second radiator 4 have in this case the same width.
• the cooling air flow in the air passage 5 passes first through the second radiator's cooling section 4b and then through the first radiator's cooling section 3b.
• the air undergoes a temperature increase when it cools the coolant in the second radiator's cooling section 4b. It will thus be at a higher temperature when it cools the coolant in the first radiator's cooling section 3b. This means that the coolant in the low-temperature cooling circuit is cooled to a lower temperature than the coolant in the high-temperature cooling circuit.
• Fig. 3a depicts a vertical section in the plane A-A through the inlet tanks 3a, 4a in Fig. 2. It shows the second pipe element 12 extending through the tank 3a from a connecting portion 12a, for connecting a coolant hose on one side of the tank 3 a, to an end surface 12b on an opposite side of the tank 3 a.
• the end surface 12b is in the same plane as an external surface of the tank 3a.
• the second radiator's inlet tank 4a comprises a fifth pipe element 15 which has a protruding portion with an end surface 15a.
• the second pipe element's end surface 12b is adapted to being fitted against the fifth pipe element's end surface 15a with an intermediate gasket 17.
• Fastening means 8 are used to press the first radiator's inlet tank 3a and the second radiator's inlet tank 4a towards one another so as to create a tight connection between the second pipe element's end surface 12b, the gasket 17 and the fifth pipe element's end surface 15a.
• the second pipe element 12 and the fifth pipe element 15 each have a similar internal cross-sectional area and thus constitute a composite pipeline with a continuous internal cross-sectional area through which the coolant in the low-temperature cooling circuit is conveyed to the second radiator's inlet tank 4a.
• the distance between the inlet tanks 3a, 4a of the radiators 3, 4 is defined in this case by how far the fifth pipe element 15 protrudes from the second radiator's inlet tank 4a.
• Fastening means 8 are used to press the first radiator's outlet tank 3c and the second radiator's outlet tank 4c together to create a tight connection between the fourth pipe element's end surface 14b, the gasket 17 and the sixth pipe element's end surface 16a.
• the fourth pipe element 14 and the sixth pipe element 16 are of similar internal cross-sectional area and thus constitute a pipeline with a continuous internal cross-sectional area through which coolant is led out from the outlet tank 4c to the low-temperature cooling circuit.
• the distance between the outlet tanks 3c, 4c of the radiators 3, 4 is defined by how far the sixth pipe element 16 protrudes from the second radiator's outlet tank 4c.
• Fig. 4a depicts a section similar to Fig. 3a in an alternative embodiment.
• the second pipe element 12 extends through the inlet tank 3 a from a connecting portion 12a, for connecting a coolant hose on one side of the tank 3a, to an end surface 12b on an opposite side of the tank 3a.
• the end surface 12b is situated on a protruding portion and is therefore at a distance from an external surface of the tank 3a.
• the second radiator's inlet tank 4a comprises a fifth pipe element 15 which has an end surface 15a situated on a protruding portion.
• the fifth pipe element 15 has an outside diameter substantially corresponding to an inside diameter of the second pipe element 12.
• the pipe element 15 has an externally situated annular recess for fitting an O-ring 18.
• the pipe element 15 with the O-ring 18 will be inserted into the pipe element 12 until the latter's end surface 12b comes into contact with an external surface of the second radiator's inlet tank 4a.
• the O-ring 18 prevents coolant from leaking out into the connecting region between the pipe elements 12, 15.
• the distance between the inlet tanks 3a, 4a of the radiators 3, 4 is defined in this case by how far the second pipe element 12 protrudes from the first radiator's inlet tank 3a.
• Fig. 4b depicts a section similar to Fig. 3b in the alternative embodiment.
• the fourth pipe element 14 extends through the outlet tank 3c from a connecting portion 14a, for connecting a coolant hose on one side of the tank 3c, to an end surface 14b on an opposite side of the tank 3c.
• the end surface 14b is situated on a protruding portion and is therefore at a distance from an external surface of the tank 3c.
• the second radiator's outlet tank 4c comprises a sixth pipe element 16 which has an end surface 16a which is situated on a protruding portion and is therefore at a distance from an external surface of the tank 4c.
• the sixth pipe element 16 has an outside diameter substantially corresponding to the inside diameter of the fourth pipe element 14.
• the pipe element 16 has an externally situated annular recess for fitting an O-ring 18.
• the smaller pipe element 16 will be inserted into the larger pipe element 14 until the latter's end surface 14b comes into contact with an external surface of the tank 4c.
• the O-ring 18 prevents coolant from leaking out into the connecting region between the pipe elements 14, 16.
• the distance between the outlet tanks 3c, 4c of the radiators 3, 4 is defined in this case by how far the fourth pipe element 14 protrudes from the first radiator's outlet tank 3c.
• Fig. 5a depicts a section similar to Fig. 3a in a further alternative embodiment.
• the second pipe element 12 extends through the inlet tank 3 a from a connecting portion 12a, for connecting a coolant hose on one side of the tank 3a, to an end surface 12b on an opposite side of the tank 3a.
• the end surface 12b is situated on a protruding portion and is therefore at a distance from an external surface of the tank 3a.
• the second radiator's inlet tank 4a comprises a fifth pipe element 15 which has an external end surface 15a adapted to coming into contact with the second pipe element's end surface 12b.
• Fastening means 8 are used to press the first radiator's inlet tank 3a and the second radiator's inlet tank 4a towards one another.
• the second pipe element 12 and the fifth pipe element 15 are of similar internal cross-sectional area and thus constitute a composite pipeline with a constant internal cross-sectional area in which the coolant in the low-temperature cooling circuit is conveyed to the second radiator's inlet tank 4a.
• the composite pipeline comprises a tubular sealing means 19.
• the sealing means 19 has a first end portion 19a adapted to abutting sealingly against an internal surface of the second pipe element 12, and a second end portion 19b adapted to abutting sealingly against an internal surface of the fifth pipe element 15.
• the tubular sealing means is adapted to being movable within the pipeline between a first extreme position defined by a first stop surface 12c in the second pipe element 12 and a second extreme position defined by a second stop surface 15b in the fifth pipe element 15.
• the distance between the inlet tanks 3a, 4a of the radiators 3, 4 is defined in this case by how far the second pipe element 12 protrudes from the first radiator's inlet tank 3a.
• Fig. 5b depicts a section similar to Fig. 3b in the further alternative embodiment.
• the fourth pipe element 14 extends through the outlet tank 3c from a connecting portion 14a, for connecting a coolant hose on one side of the tank 3c, to an end surface 14b on an opposite side of the tank 3c.
• the end surface 14b is situated on a protruding portion and is therefore at a distance from an external surface of the tank 3c.
• the second radiator's outlet tank 4c comprises a sixth pipe element 16 which has an external end surface 16a adapted to coming into contact with the fourth pipe element's end surface 14b.
• Fastening means 8 are used to press the first radiator's outlet tank 3c and the second radiator's outlet tank 4c towards one another.
• the fourth pipe element 14 and the sixth pipe element 16 are of similar internal cross-sectional area and thus constitute a pipeline with a continuous internal cross-sectional area through which coolant is led out from the second radiator's outlet tank 4c to the low-temperature cooling circuit.
• the pipeline is provided with a tubular sealing means 19.
• the sealing means 19 has a first end portion 19a adapted to abutting sealingly against an internal surface of the fourth pipe element 14, and a second end portion 19b adapted to abutting sealingly against an internal surface of the sixth pipe element 16.
• the tubular sealing means 19 is adapted to being movable within the pipeline between a first extreme position defined by a first stop surface 14c in the fourth pipe element 14 and a second extreme position defined by a second stop surface 16b in the sixth pipe element 16.
• the distance between the outlet tanks 3c, 4c of the radiators 3, 4 is defined by how far the fourth pipe element's end surface 14b protrudes from the first radiator's outlet tank 3c.
• the coolant in the low-temperature cooling circuit is thus conveyed to the second radiator's inlet tank 4a via a pipeline 12, 15 which extends through the first radiator's inlet tank 3a.
• the coolant is led out from the second radiator's outlet tank 4c via a pipeline 14, 16 which extends through the first radiator's outlet tank 3c.
• the low-temperature cooling circuit which conveys coolant to and from the second radiator 4 which is situated in front of the first radiator 3 need not comprise coolant lines which extend round the first radiator 3.
• radiator arrangement according to the invention makes it possible either for the radiators 3, 4 to be wider and more effective or for the space at their side to be used for other components of the vehicle.
• a further advantage of the present invention is that the continuous pipe element 12, 14 may be used to support the second radiator 4 via fastening means 8.
• the separate radiators 3, 4 will thus constitute a composite unit in a fitted state. It is therefore sufficient to use fastening means 9 to fasten the first radiator 3 in the frame 10.
• coolant in a high-temperature cooling circuit and coolant in a low-temperature cooling circuit are cooled in the radiators 3, 4 but it is possible to cool other types of media in these radiators.

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=51658718

Family Applications (1)

Country Status (3)

Cited By (3)

Citations (6)

• 2013
  • 2013-04-03 SE SE1350413A patent/SE538362C2/sv unknown
• 2014
  • 2014-03-31 DE DE112014001101.0T patent/DE112014001101T5/de not_active Withdrawn
  • 2014-03-31 WO PCT/SE2014/050381 patent/WO2014163559A1/en active Application Filing

Patent Citations (6)

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