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
  • F28D1/053—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 the conduits being straight
  • F28D1/0535—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 the conduits being straight the conduits having a non-circular cross-section
  • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
  • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
• • 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
  • F28F9/0202—Header boxes having their inner space divided by partitions
• • 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
  • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
  • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
  • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
  • F28D2021/0085—Evaporators

Definitions

• Slip collector for a heat exchanger in particular a heat exchanger for a motor vehicle, and exchanger containing such a collecting box.
• the invention relates to the field of heat exchangers, especially evaporators, and relates in particular to an associated collector box.
• the invention will find particular applications in the field of air conditioning circuits for motor vehicles.
• heat exchangers composed of a beam, itself composed of parallel tubes, said beam allowing a heat exchange between a first fluid flowing inside said tubes, and a second fluid, passing through said beam between said tubes.
• Said heat exchangers further comprise collecting boxes to which said tubes are connected.
• the bundle of several rows of tubes in particular two or three, arranged one behind the other in the direction of flow of the second fluid.
• the manifolds have an interior space divided into as many collecting chambers as there are rows of tubes in the bundle. Each collecting chamber is then connected to the tubes of one of the rows of the beam via introduction orifices.
• the first fluid enters the heat exchanger through an inlet of the header and circulates inside the beam through each collector chamber according to a predetermined circulation path. Said first fluid then leaves the heat exchanger through an outlet of the collector box.
• the invention proposes a collecting box for a heat exchanger, in particular a motor vehicle heat exchanger, said exchanger comprising a beam provided with at least one row of tubes inside which a first fluid circulates, said box a collector comprising at least one collection chamber, said injection chamber, configured to be connected with said row of tubes, said injection chamber being provided with at least two inlets, said inlets being designed to allow a supply of said injection chamber first fluid in at least two separate zones.
• the presence of two inputs at two distinct zones makes it possible to better distribute the distribution of the first fluid in the manifold by reducing the average distance traveled by the first fluid and thus to reduce the pressure drops.
• said row of tubes being connected to said injection chamber, it is traversed by a fluid whose state is substantially homogeneous in all the tubes, unlike a row of tubes traversed by the fluid according to several successive passes in series. Depending on the possible additional rows used or not, it will then be possible to preserve the homogeneity of the heat exchange allowed by the exchanger.
• Said collector box comprises an additional collector chamber intended to be connected to a second row of tubes, said chamber being provided with an outlet, designed so as to allow an evacuation of the first fluid from the collector box,
• Said additional collection chamber comprises a single compartment configured to collect the first fluid from all the tubes of the second row, said manifold comprises two compartments forming said injection chamber, each compartment being provided with one of said inputs,
• Said collector box comprises an intermediate compartment separating the compartments forming said injection chamber,
• Inlets of the injection chamber are located at the intermediate chamber.
• Said collector box comprises an intermediate compartment separating the compartments forming said injection chamber,
• Said injection chamber has two longitudinal ends and extends in a main direction of longitudinal extension between said two longitudinal ends, each of said inlets being located at one or the other of said longitudinal ends,
• Said injection chamber has two longitudinal ends and extends in a main direction of longitudinal extension between said two longitudinal ends, said inlets being located midway between said two longitudinal ends, said manifold further comprises a collecting chamber additional, said chamber being intended to be connected to an additional row of tubes, said third row of additional tubes,
• the entrances have a substantially rectangular, circular, star-shaped or spiral-shaped section
• Said inlets are composed of a multitude of orifices
• Said collector box comprises a cover and a collector plate.
• the invention also relates to a heat exchanger provided with a collector box as described above.
• Said beam is separated into several sets of tubes, said passes, said exchanger comprising three passes, two of which, said first, are connected to the injection chamber and are intended to be traversed in parallel by the first fluid, the other of said passes , said second, being connected to the suction chamber and being intended to be located downstream of the first passes according to the circulation of the first fluid.
• Figure 1 is a schematic perspective view of a collector box according to the invention.
• Figures 2a-2g are schematic cross-sectional views of a manifold provided with an inlet, according to different embodiments, all in accordance with the invention.
• Figure 3 is a schematic view of a heat exchanger according to the invention and an expander.
• Figure 4 is a schematic view of a heat exchanger according to another embodiment of the invention and a pressure reducer. As illustrated in Figure 1, the invention relates to a manifold 1 for heat exchanger.
• said heat exchanger 4 is for example an evaporator 4 configured to allow a heat energy exchange between a first fluid and a second fluid.
• Said exchanger 4 comprises said manifold 1 and a bundle advantageously comprising several rows of tubes, here two rows of tubes 20, 21.
• Said exchanger may be connected to an expander 5, said exchanger 4 and said expander 5 forming part of the same air conditioning circuit for a motor vehicle.
• Said exchanger may also be provided with a collector, not shown in the figures.
• the collector and said manifold 1 allow the circulation of the first fluid inside said beam 30. They are located on either side of the latter.
• the collector is here a collecting box comprising a collector plate pierced with openings for the circulation of the first fluid from one row to another 20, 21 without additional inlet or outlet.
• the tubes of the two rows of tubes 20, 21 are matched so as to form a U whose ends open into the manifold 1 and the presence of a collector such as in the embodiment shown is not necessary.
• Said first fluid is for example a refrigerant circulating in the bundle 30 inside said tubes.
• Said second fluid may be air, moving in the form of an air flow, and which passes through said beam 40 between said tubes so as to allow the exchange of heat between said first fluid and said second fluid.
• Said tubes define for example channels in which said first fluid flows.
• Said tubes each have a proximal end and a distal end and advantageously extend in a main direction of longitudinal extension between their said ends.
• the proximal end of said tubes is for example connected to said manifold box 1.
• the distal end of said tubes may itself be connected to said manifold.
• Said tubes are positioned parallel to each other.
• said tubes are for example obtained by a sheet bending or an assembly of plates arranged in pairs and between which circulates said first fluid.
• Said rows 20, 21 are arranged in planes parallel to each other, each plane being substantially perpendicular to a direction of flow of said air flow.
• Said rows 20, 21 comprise an injection row 21 and a suction row 20 which are arranged one behind the other so as to be traversed successively and in this order by said air flow.
• said manifold 1 has an interior space for the circulation of the first fluid.
• Said collector box 1 for example has a distal end 119 and a proximal end 118 and extends in a main direction of longitudinal extension between said distal end 119 and said proximal end 118.
• Said manifold 1 is designed to allow the circulation of the refrigerant in each of the tubes of the bundle 40.
• Said collector box 1 is advantageously formed of a cover and a collector plate, through which said tubes open.
• Said cover and said collector plate are advantageously designed in a metallic material, for example an aluminum alloy, and secured to one another by brazing.
• the manifold 1 also has a dimension, called width, measured in a direction perpendicular to the direction of longitudinal extension of the manifold 1 and substantially parallel to the flow direction of said air flow.
• Said manifold 1 is divided into two collecting chambers 10, 12, the number of collecting chambers 10, 12 being advantageously equal to the number of rows of tubes 20, 21 in said bundle 40 of the heat exchanger 4.
• Each collecting chamber 10 , 12 is connected to one of said rows of tubes 20, 21 so as to allow the circulation of the first fluid between said collecting chamber 10, 12 and said row of tubes 20, 21.
• Said collector chambers 10, 12 each have two ends longitudinal 108, 109 and 128, 129 and each extend in a main direction of longitudinal extension between said longitudinal ends. It will be noted that said principal direction of longitudinal extension of each The collector chamber 1 is parallel to the direction of longitudinal extension of the manifold box 1.
• Said collector chambers 10, 12 comprise a suction chamber 10 designed to be connected to said suction row 21 and an injection chamber 12 designed to to be connected to the injection row 20. It will also be noted that said collecting chambers 10, 12 are arranged parallel to each other and adjacent to one another.
• Each of the collecting chambers 10, 12 advantageously has a dimension called width measured in a direction parallel to the direction of the width of said manifold 1.
• said collector chambers 10, 12 all have the same width.
• said collecting chambers 10, 12 are further separated from one another by a longitudinal partition 100, said longitudinal partition 100 extending in a direction parallel to the direction of longitudinal extension. from the collector box 1.
• Said collector chambers 10, 12 are each provided with a series of tube introduction orifices, not shown in the figures, which allow the proximal ends of each of the tubes of the bundle 40 to open into one of said collector chambers 10 , 12.
• each of said collecting chambers 10, 12 is configured to be connected to one of the rows 20, 21 of tubes of the bundle 40 through said introduction ports.
• Each of said collector chambers 10, 12 is thus provided with as many insertion orifices as there are tubes to which it is connected.
• Said tube introduction orifices are slits for example arranged perpendicular to the direction of longitudinal extension of the collector chambers 10, 12 and are all parallel to each other. Said tube introduction orifices are arranged on the collector plate.
• each collecting chamber 10, 12 may, in addition, be provided with two transverse partitions 200, 300 making it possible to divide the injection chamber 10 into several compartments.
• Said transverse partitions 200, 300 are advantageously of planar shape and oriented substantially perpendicular to the direction of longitudinal extension of said injection chamber 10.
• Said injection chamber 10 is here divided into three compartments 101, 102, 103 including an intermediate compartment 103 and two distribution compartments 101, 102 forming said injection chamber 10.
• Each of said dispensing compartments 101, 102 is in contact with one or other of the longitudinal ends 108, 109 of the injection chamber. Said dispensing compartments 101, 102 are configured to allow a circulation of said first fluid between said dispensing compartments and the tubes of the injection row 21.
• Said intermediate compartment 103 is located between the two distribution compartments 101, 102 advantageously at mid-distance between the longitudinal ends 108, 109 of said injection chamber 10.
• one of the two distribution compartments 102, said compartment intermediate 103 and the other 101 of the two distribution compartments follow one another in this order along the direction of principal longitudinal extension of said injection chamber 10.
• said injection chamber 10, connected to said injection row 21, is provided with at least two inlets 2, 3, each of said inlets 2, 3 being designed to allow feeding of said chamber injecting first fluid in at least two separate areas.
• each of the distribution compartments 101, 102 of the injection chamber 10 is provided with one of said inlets 2, 3. Said inlets 2, 3 thus enable a simultaneous entry of the first fluid into the one and the Another distribution compartments 101, 102 of the injection chamber 10.
• said inlets 2, 3 are designed to allow connection in two separate locations of the manifold 1 to the air conditioning circuit.
• each of the transverse partitions 200, 300, separating the intermediate compartment from one or the other of the distribution compartments 101, 102, is provided with one or the other of the inlets 2, 3.
• said inlets 2, 3 are each disposed between said intermediate compartment 103 and one of said distribution compartments 102, 101.
• said inlets 2, 3 are respectively located at the one and the other of the longitudinal ends 108, 109 of the injection chamber 10.
• said injection chamber 10 may advantageously In this case, said two distribution compartments 101, 102 are separated from each other by a single flat transverse partition, not shown, oriented substantially perpendicularly to the direction of extension. longitudinal of said injection chamber 10. The absence of partition is also possible.
• said inlets 2, 3 are advantageously openings having a substantially circular section and designed so as to limit the generation of pressure drops during the passage of the first fluid through said inlets 2, 3.
• said inlets 2, 3 may have a section substantially in the shape of a rectangle, a star or a spiral.
• said inlets 2, 3 may be composed of a multitude of orifices of shape chosen from those which precede or not.
• Said suction chamber 12 is advantageously devoid of transverse partition and thus comprises a single distribution compartment 120, said distribution compartment 120 extending over the entire length of the suction chamber 12.
• the compartment 120 is thus configured to be connected with all the tubes of the suction row 20.
• said suction chamber 12 is advantageously provided with an outlet 60, said outlet 60 being configured to allow evacuation of the first fluid out of the collecting box 1.
• Said outlet 60 is for example an opening possibly having a shape similar to said entries 2, 3, in particular circular.
• passes a series of tubes, said tubes being connected to the same distribution compartment 101, 102, 120.
• the beam 40 of said exchanger 4 is advantageously divided into three passes 20, 210, 212. Said passes comprise two passes 210, 212, said first passes or injection passes, each connected to one of the distribution compartments 101, 102 of the injection chamber 10 and a pass 20, said second pass or suction pass, connected to the suction chamber 12. It will be noted that the suction chamber 12 being provided with only one distribution compartment 120, the passage 20 coincides with the row of tubes 20.
• Said exchanger 4 is configured so that said first fluid flows first, in parallel, in the injection passes 210, 212 depending on whether the fluid comes from one or other of said inputs 2, 3. Then after having passed through the collector, said first fluid then circulates in the suction passage 20. It will be noted that between one of said inlets 2, 3 and the outlet 60 each fluid particle circulates successively in two of the three passes of the heat exchanger 4.
• Said exchanger 4 thus allows a first circulation path and a second circulation path for the first fluid.
• the said circulation paths are distinct at the level of the injection chamber 10 and of the injection row 21.
• the two circulation paths are on the other hand confused at the level of the suction row 20 and the chamber of injection. suction 12. They are of identical length for the first fluid.
• the first flow path taken by the first fluid starts at one of said inlets 2, called the first inlet 2, then comprises, in this order, the compartment 102 of the injection chamber 10, provided with said first inlet 2, one 210 of said injection passage, the manifold, the suction passage 20 and the suction chamber 12.
• said first circulation path ends at the outlet 60 of said exchanger 4.
• the second circulation path taken by the fluid starts at the other of said inlets 3, called second inlet 3, then comprises, in this order, the other of said compartments 101 of the injection chamber 10, namely that provided with said second inlet 3, the other 212 of said injection passage, the manifold, the suction passage 20 and the suction chamber 12. Finally, said second circulation path ends at the exit 60 of said exchanger 4.
• Said collector box 1 of said exchanger 4 is thus configured so that said first fluid can borrow simultaneously from one of the two circulation paths, which promotes a good homogeneity of the exchange.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (3)

Citations (3)

• 2015
  • 2015-03-20 FR FR1552308A patent/FR3033878B1/fr not_active Expired - Fee Related
• 2016
  • 2016-03-21 EP EP16710771.3A patent/EP3271679B1/de active Active
  • 2016-03-21 WO PCT/EP2016/056148 patent/WO2016150914A1/fr active Application Filing

Patent Citations (3)

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