Classifications

• • 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 devices
  • B60H1/32—Cooling devices
  • B60H1/3204—Cooling devices using compression
  • B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
• • 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 devices
  • B60H1/00321—Heat exchangers for air-conditioning devices
  • B60H1/00342—Heat exchangers for air-conditioning devices of the liquid-liquid type
• • 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
  • F01P9/00—Cooling having pertinent characteristics not provided for in, or of interest apart from, groups F01P1/00 - F01P7/00
  • F01P9/04—Cooling having pertinent characteristics not provided for in, or of interest apart from, groups F01P1/00 - F01P7/00 by simultaneous or alternative use of direct air-cooling and liquid cooling
• • 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
  • 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
  • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
  • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
  • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
  • F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
• • 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
  • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
  • F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
• • 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
  • F01P2060/00—Cooling circuits using auxiliaries
  • F01P2060/14—Condenser
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F2215/00—Fins
  • F28F2215/02—Arrangements of fins common to different heat exchange sections, the fins being in contact with different heat exchange media

Definitions

• Plate heat exchanger module comprising a heat exchange section cooled with atmospheric air / in particular for a motor vehicle
• the invention relates to heat exchange modules, in particular for motor vehicles. It relates more particularly to a heat exchange module comprising a multiplicity of stacked plates divided into at least two heat exchange sections, the stacked plates being assembled to delimit in each heat exchange section at least first channels d flow for a first fluid, said first fluid being in heat exchange relation with an atmospheric air flow in at least one of the heat exchange sections.
• the plates are grouped in a single stage, which does not allow to cool or heat sufficiently a fluid because the inlet temperature of the second fluid, with which it is related heat exchange, is not sufficiently low, respectively sufficiently high. Furthermore, it is possible that the thermal power available on one of the fluids is not sufficient to ensure the cooling, respectively the heating of a fluid.
• the temperature of the refrigerant at the inlet of the exchanger is controlled by the temperature of the same fluid at the outlet of the exchanger, which does not allow enough power to be released. thermal to ensure cooling, respectively heating of said coolant.
• the present invention relates to a heat exchange module which overcomes these drawbacks.
• the separation between the heat exchange sections can be carried out by at least one partition.
• Partition walls can have a wide variety of embodiments. However, preferably, they are constituted by common plates of the heat exchange sections.
• the partition walls have a space which is not more important than that of a common plate. On the other hand, it is not necessary to provide special tools to make them. They can be manufactured at the same time as the other plates. To ensure the independence of at least one of the exchange sections, at least one of the partition walls may have no communication passage.
• a heat exchange module is made up of two independent exchangers, one of these exchangers being cooled, for example, by a fluid, while the second is cooled by atmospheric air circulation. This characteristic makes it possible to reduce the size of the heat exchange module in the engine compartment of the vehicle.
• At least one of the partition walls adjacent to the heat exchange section in which the atmospheric air flow circulates comprises a communication passage allowing the passage of one of the fluids which circulate in the heat exchange section situated on the other side of the partition wall comprising the communication passages in the heat exchange section in which the air flow circulates, in order to carry out a heat exchange between this fluid and the atmospheric air flow.
• the plates of at least one of the heat exchange sections are provided with raised peripheral edges, assembled in leaktight manner delimit the first flow channels and the second flow channels.
• the plates of the heat exchange section in which the atmospheric air flow circulates delimit first flow channels for a fluid alternating with second flow channels open for the circulation of the air flow.
• Corrugated spacers can be arranged between the plates of the heat exchange section which delimit open flow channels for the circulation of the air flow.
• the module can comprise an air inlet nozzle for channeling the air flow towards the plates of the heat exchange section in which the atmospheric air flow circulates, and an air outlet nozzle to channel the air flow at the outlet of the heat exchange section in which the atmospheric air flow circulates.
• the second fluid consists of water from the cooling circuit of the engine of the motor vehicle.
• An exchange module according to the invention is advantageously produced in the form of a condenser in which a cooling fluid circulates intended for the air conditioning circuit.
• the invention relates to an air conditioning circuit, in particular of the passenger compartment of a motor vehicle, comprising an evaporator, a compressor, a condenser, an expansion valve, in which a cooling fluid circulates, the condenser being constituted by a heat exchanger with two heat exchange sections according to the present invention.
• FIG. 1 is a schematic sectional view of a two-stage heat exchange module according to the present invention.
• FIG. 2 is a partial sectional view on an enlarged scale of the heat exchange module shown in Figure 1;
• FIG. 3 is a schematic sectional view of a second embodiment of a two-stage heat exchange module according to the present invention.
• FIG. 4 is a schematic view of the front part of a motor vehicle
• FIG. 5 is a magnifying glass which shows an enlargement of the part surrounded by broken lines of the engine cover of the vehicle of Figure 4;
• FIG. 6 is a magnifying glass which shows an enlarged view showing a variant of the installation of a condenser according to the invention in a motor vehicle.
• FIG. 1 a sectional view of a heat exchange module according to the invention. It is divided into a first heat exchange section designated by the general reference 10 and a second heat exchange section designated by the general reference 12.
• the heat exchange sections 10 and 12 are separated by a plate separation 1. Only the medium to be cooled or heated passes through the two sections.
• the heat exchange section 10 is made up of plates 2 stacked one on the other and each provided with a peripheral rim 3.
• the peripheral rims 3 are assembled in a sealed manner to delimit between the plates 2 first flow channels for a first fluid Fi which alternate with second flow channels for a second fluid F 2 , distinct from F x .
• the heat exchange section 12 is constituted by a stack of plates 4 which are distinguished from the plates 2 of the heat exchange section 10 by the fact that they do not have an inclined flange 3. These plates are designed to so as to determine first flow channels for the circulation of a first fluid, generally a liquid, and second channels comprising an open inlet and outlet for the entry of an air flow, as shown by the arrows 5 ( Figure 2) and for the exit from this stream, as shown by arrow 6.
• FIG. 1 there is shown only an inlet pipe 15 for the first fluid Fi and only an outlet pipe 17 for the second fluid F.
• four pipes are actually provided on the end plate 19 of the heat exchange module, namely an inlet pipe 15 for the first fluid F x and an outlet pipe for this same fluid , located behind the tubing 15. This outlet tubing is therefore not visible in the figure.
• an inlet pipe and an outlet pipe 17 are provided for the second fluid F 2 .
• the fluid inlet tubing F 2 is located behind the outlet tubing 17. It is not visible in FIG. 1.
• the fluid outlet F ⁇ can be located on the other side of the module, as shown by tubing 16 shown in broken lines.
• the heat exchange sections 10 and 12 can be independent of each other.
• the partition 14 disposed between these two sections has no communication passage for the fluids flowing in these different sections.
• Two independent heat exchangers are thus determined, the first exchanger, corresponding to the heat exchange section 10, being cooled by a fluid-fluid circulation, while the second heat exchanger, corresponding to the heat exchange section 12, is cooled by a circulation of an external atmospheric air flow.
• the heat exchange section 12 comprises an air inlet nozzle 7 which makes it possible to channel the air flow towards the plates 4 of the section 12 and an air outlet nozzle 9 which makes it possible to channel the air flow at the outlet of the plates 4.
• the fluids F-. and F 2 circulate in the heat exchange section 10 in heat exchange relationship with each other.
• the heat exchange module is a condenser used to condense the refrigerant of the air conditioning circuit of the motor vehicle, for example R134a or carbon dioxide.
• the fluid Fi is therefore constituted by the refrigerant of the air conditioning circuit, while the fluid F 2 is a liquid, generally the water of the engine cooling circuit.
• the heat exchange sections 10 and 12 are not independent of each other. This is why the partition 14 has two communication passages 21 located respectively opposite the inlet pipe 15 of the refrigerant of the air conditioning circuit and the outlet pipe of the same fluid. The partition does not have a communication passage with regard to the fluid inlet and outlet pipes F 2 .
• the refrigerant Fi "of the air conditioning circuit can enter the heat exchange section 12 through the communication passage 21 located at the right of the inlet pipe 15. Arrived in this section 12, it circulates in the first flow channels delimited between the plates 4 of section 12 in heat exchange relation with the atmospheric air which circulates in the second flow channels delimited between these same plates 4. After having crossed the flow channels, the fluid F x leaves the heat exchange section 12 through the second communication passage 21 located opposite the outlet pipe (not shown and not referenced) of the fluid Fj.
• a two-stage heat exchange module with three fluids is thus produced.
• the refrigerant of the air conditioning circuit is cooled by heat exchange with the fluid F 2
• the second stage corresponding to the heat exchange section heat 12
• the presence of the second stage makes it possible to complete the cooling of the refrigerant fluid in the event that its cooling is not sufficiently ensured by the heat exchange with the second fluid F 2 -
• the heat exchange module of the invention may have only one pass or, in known manner, it may include a multipljjcity of passes.
• the partition 14 can be constituted by a running plate 2 of the heat exchange section 10, or also by a running plate 4 of the heat exchange section 12.
• FIG. 3 a schematic sectional view of another embodiment of a heat exchange module according to the invention. It comprises a first heat exchange section 10 and a second heat exchange section 12 separated by a partition wall 14.
• the section is taken through the fluid inlet pipe F 2 , designated by the reference 23, and the outlet pipe 17 of this same fluid F 2 .
• the inlet and outlet pipes of the first fluid F x are not represented.
• This embodiment is distinguished by the different constitution of the plates 25 of the heat exchange section 12.
• the plates 25 are grouped in pairs.
• the plates of the same pair comprise bowls 27 facing one another and mutually connected in leaktight manner at their periphery.
• the bottoms of these bowls 27 communicate through openings 29, so as to delimit circulation chambers 31 for the liquid fluid of the heat exchange section 12.
• the plates 25 delimit circulation passages between them for the atmospheric air flow 35.
• the air flow 35 circulates perpendicular to the circulation of the other fluid, and not against the current or co-current.
• corrugated spacers 37 are arranged in the circulation passages 33 of the atmospheric air flow 35.
• the operation of this second embodiment is similar to that of the heat exchange module which has been described with reference to Figures 1 and 2.
• the refrigerant Fi of the air conditioning circuit circulates in the first heat exchange section 10 in heat exchange relationship with the fluid F 2 , generally the engine cooling water, then passes into the heat exchange section 12 through communication passages provided in the separation plate 14 in order to circulate in heat exchange relationship with the atmospheric air stream 35 to further lower its temperature.
• FIG. 4 shows a schematic view of the front part of a motor vehicle 40.
• the circle represented in dotted lines 41 surrounds an area 42 located under the engine hood 43 of the motor vehicle, in which it is possible to locate a multi-stage and multi-fluid heat exchange module according to the present invention.
• FIG. 5 is a magnifying glass which shows on an enlarged scale the area surrounded by the circle 41 in broken lines in Figure 4.
• the heat exchange module of the invention designated by the general reference 45, consists of two stages , namely a first stage constituted by the heat exchange section 10, cooled by the cooling water of the cooling circuit of the heat engine of the vehicle, and a second stage constituted by the heat exchange section 12, cooled by atmospheric air circulation.
• the arrow 46 designates the entry of air into a duct 47, while the arrow 48 symbolizes the exit of air from a duct 49 after passing through the heat exchange section 12.
• a fan 50 can possibly provide forced air circulation.
• the reference 52 designates the evaporator of the air conditioning circuit.
• the air flow 54 is cooled, before entering the vehicle interior, by passing through the evaporator 52.
• FIG 6 a magnifying glass similar to that of Figure 5 X
• the location of the heat exchange module 45 of the invention differs in that the air outlet nozzle 54 opens into the engine compartment 53 of the vehicle (arrow 57) instead of being discharged to the outside (arrow 48 in Figure 5).

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
• Air-Conditioning For Vehicles (AREA)

Applications Claiming Priority (3)

Publications (1)

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ID=32104361

Family Applications (1)

Country Status (4)

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Family Cites Families (14)

• 2002
  • 2002-10-31 FR FR0213672A patent/FR2846734B1/fr not_active Expired - Fee Related
• 2003
  • 2003-10-31 WO PCT/FR2003/003265 patent/WO2004042309A2/fr not_active Ceased
  • 2003-10-31 EP EP03767879A patent/EP1579161A2/de not_active Withdrawn
  • 2003-10-31 AU AU2003292313A patent/AU2003292313A1/en not_active Abandoned

Non-Patent Citations (1)

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