EP3262353A1 - Circuit de climatisation transcritique à vase d'expansion intégré - Google Patents
Circuit de climatisation transcritique à vase d'expansion intégréInfo
- Publication number
- EP3262353A1 EP3262353A1 EP16707691.8A EP16707691A EP3262353A1 EP 3262353 A1 EP3262353 A1 EP 3262353A1 EP 16707691 A EP16707691 A EP 16707691A EP 3262353 A1 EP3262353 A1 EP 3262353A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exchanger
- air conditioning
- volume
- circuit
- fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
- F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/1684—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section
-
- 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
- F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
-
- 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
- F28F9/0231—Header boxes having an expansion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
- F28F2255/14—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes molded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/12—Fastening; Joining by methods involving deformation of the elements
- F28F2275/122—Fastening; Joining by methods involving deformation of the elements by crimping, caulking or clinching
Definitions
- the present invention relates to the field of air conditioning and more particularly to air conditioning circuits with transcritical operation.
- an air conditioning device operates according to a subcritical steam compression operating cycle using a fluid such as that produced under the reference R134a (tetrafluoroethane-1, 1, 1, 2).
- a thermodynamic cycle is called subcritical when it operates below the critical temperature of the fluid.
- the critical temperature of a fluid is its maximum temperature in the liquid phase, irrespective of the pressure, that is, the temperature of its critical point.
- a transcritical operating cycle air conditioning circuit comprises a rotary compressor driven, via a clutch, by a rotating element of the vehicle engine.
- this compressor 60 compresses a refrigerant fluid and directs it to a gas cooler 61 attached to a fan.
- the fan forces a flow of air through the gas cooler 61 to remove a maximum of calories from the compressed fluid.
- the refrigerant fluid is then directed to the cold circuit of an internal heat exchanger 62 in which the coolant fluid still yields heat to a portion of the circuit corresponding to the hot circuit of the internal heat exchanger 62.
- the refrigerant fluid thus cooled is then directed to an expansion valve 63 which relaxes the refrigerant fluid and directs it to a "chiller" type exchanger (or water cooler in French) 64.
- the "chiller" type exchanger 64 is linked to a cooling circuit 65 in which circulates a cooling fluid in heat exchange with the coolant fluid.
- the cooling circuit also comprises an expansion vessel whose function is to provide an expansion volume that absorbs the variations in the volume of the cooling fluid.
- An object of the invention is to reduce the space and costs of manufacturing and mounting of a transcritical cycle air conditioning circuit.
- a transcritical operating cycle air conditioning device comprising a circuit conveying a refrigerant fluid and successively connecting:
- a second exchanger of the air conditioning device having a circulation volume of a refrigerant fluid in heat exchange with the coolant fluid;
- the inlet of the hot circuit of the intermediate cooler is connected to the inlet of the compressor.
- the second exchanger comprises an expansion volume of the cooling fluid.
- the overall size of the second exchanger and expansion vessel assembly is reduced by merging these two components.
- the risk of fluid leakage is also reduced by a reduction in the number of conduits.
- manufacturing and assembly operations are simplified, all resulting in a more reliable device, more compact and less expensive than the previous solutions.
- the invention also comprises a second exchanger for a transcritical air conditioning circuit, comprising a bundle of circulation tubes for a coolant fluid which extend in a circulation volume of a refrigerant fluid.
- the second exchanger comprises an expansion volume of the cooling fluid.
- the circulation volume of the cooling fluid of such an exchanger is advantageously of substantially parallelepiped and is delimited by a body comprising a first molded element and a second element attached by stapling on the first. This method of assembly is particularly economical and reliable.
- the first element has a substantially parallelepipedal shape and the second element is substantially plane.
- first element and the second element are both substantially parallelepipedal in shape.
- At least one of the elements comprises at least one groove for receiving the flanks of a collector of the circulating fluid flow tube bundle.
- FIG. 1 is a schematic representation of a transcritical operation air conditioning circuit of the prior art
- FIG. 2 is a schematic representation of a transcriber cooling circuit according to the invention
- FIG. 3 is a perspective view of a first embodiment of a second exchanger according to the invention
- Figure 4 is a perspective view of the exchanger of Figure 3 after 90 ° rotation
- FIG. 5 is an exploded perspective view of the exchanger of FIG. 4;
- FIG. 6 is a section along a plane VI-VI of the exchanger of FIG. 4;
- FIG. 7 is a perspective view of a second embodiment of a second exchanger according to the invention.
- Figure 8 is a perspective view of the exchanger of Figure 7 after 90 ° rotation
- FIG. 9 is an exploded perspective view of the exchanger of FIG. 8.
- the transcritical cycle of operation is mounted in a motor compartment 2 of a vehicle 3 having an internal combustion engine (not shown). .
- the device 1 comprises a circuit 4 conveying a refrigerant fluid 5, here the C0:; in a sense represented by the arrows. Circuit 4 connects successively:
- the outlet 15 of the hot circuit 14 of the aftercooler 10 is, in turn, connected to the inlet 16 of the compressor 7.
- a cooling circuit 20 conveys a cooling fluid 21, here brine, through a circulation pump 22.
- the circuit 20 comprises a fluid / air heat exchanger 23 through which a fan 24 forces a flow of air for the passenger compartment of the vehicle 3.
- the cooling fluid 21 enters the second exchanger 12 in order to lose calories absorbed by the change of state of the coolant 5 in the second exchanger 12.
- the second exchanger 12 may be used as a "chiller" type exchanger or water cooler in French.
- this type of exchanger operates as a heat exchanger capable of creating cold for an exchange with a cooling fluid of another circuit of the motor vehicle, particularly when the latter comprises bays.
- the second heat exchanger may also be used as a condenser-type exchanger or as a chiller-type exchanger cooled with a cooling fluid (such as brine).
- a cooling fluid such as brine
- a first embodiment of the second exchanger 12 will now be described with reference to FIGS. 3 to 5.
- the second exchanger 12 comprises a body 30 of substantially parallelepiped shape delimiting an inner volume 31 containing a tubular bundle 50.
- the body 30 comprises a first molded element 32 of substantially parallelepiped shape on which is attached a second element 33 substantially planar.
- the elements 32 and 33 are secured to one another by a plurality
- the first element 32 has an open face 35 and is provided with a plurality of outer ribs 36 reinforcing its resistance to pressure.
- the first member 32 includes a first inner peripheral groove 37 and a second identical groove 38.
- the grooves 37 and 38 are respectively located at the upper end 39 and at the lower end 40 of the first element 32.
- the first element 32 also comprises a first and a second tubular connection 41 and 42 opening respectively in an upper portion
- the connectors 41 and 42 project from two opposite faces of the first element 32, one close to the upper end 39 and the other close to the upper end. 1 lower end 40.
- a portion 43 of substantially parallelepipedal shape is connected by its base to the upper end 39 of the first member 32.
- the portion 43 is in fluid connection with the volume 31 because its base is hollowed out.
- a plug 44 located on the face opposite to the base of the portion 43 provides access to the internal volume 43.1 of the portion 43.
- the second element 33 comprises a first tubular connection 45 and a second tubular connector 46 opening in the volume 31 respectively facing the grooves 37 and 38.
- the tubular bundle 50 comprises, here, seven tubes 51 parallel to each other and of rectangular section.
- the tubes 51 comprise crenellations 51.1 which increase the exchange surface of the tubes with the medium in which they extend.
- the tubes 51 extend into the volume 31 from an inlet manifold 52 to an outlet manifold 53.
- Each manifold 52 and 53 is substantially parallelepipedal in shape and has respectively a sealing element 54 and 55 respected to fit into the tubular part of the connectors 46 and 45.
- second exchanger 12 thus formed thus comprises a tubular bundle 50 extending in an internal volume 31 between the two collectors 52 and 53.
- the second heat exchanger 12 also comprises the internal volume 43.1 of the portion 43 in fluid connection with the volume 31.
- the second exchanger 12 is connected to the air conditioning device 1 so that the refrigerant 5 at the outlet of the expander 11 enters the inlet manifold 52 via the connector 46 and out of the outlet manifold 53 via the connector 45
- the inlet of the exchanger 23 is connected to the connection 42 and the outlet of the exchanger 23 is connected to the connection 41.
- the cooled refrigerant 5 expands in the tubes 51 of the tubular bundle 50 and cooling the cooling fluid 21 flowing in the internal volume 31 under the effect of the circulation pump 22.
- the volume 43.1 allows the expansion of the cooling fluid 21.
- the volume 43.1 being located above the connection 41 of the cooling fluid outlet 21, it is little or not occupied by the coolant 21 and forms an expansion volume of the latter.
- the body 30 of the second exchanger 12 is of substantially parallelepipedal shape and comprises a first molded element 32 of substantially parailelepipedic shape, open on one of its faces.
- a second element 70 also substantially parallelepipedal comprises an open face on which is reported the open face of the element 32.
- the bodies 32 and 70 thus define an internal volume 71 for circulation of the cooling fluid 21.
- the elements 32 and 70 are secured to one another by a plurality of staples 34.
- the connection between the two elements 32 and 70 can be achieved by staples, screws, or by induction welding or vibration.
- the second member 70 is provided with a plurality of outer ribs 36 reinforcing its resistance to pressure; as well as a first inner peripheral groove 72 and a second inner peripheral groove 73 identical to the groove 72.
- the grooves 72 and 73 are respectively located at the upper end 74 and at the lower end 75 of the second element 70.
- the second member 70 includes a first tubular connector 45 and a second tubular connector 46 opening into the volume 71 respectively facing the grooves 72 and 73.
- the tubular bundle 80 here comprises fourteen tubes 51 extending in the volume 71 from the inlet manifold 52 to the outlet manifold 53.
- the flanks of the collectors 53 and 54 of the tubular bundle 80 are respectively placed in the grooves 38 and 37 of the first element 32.
- the second element 70 is then presented in such a way that the grooves 73 and 72 face the flanks of the collectors 53 and 54.
- the sealing elements 54 and 55 engage respectively in the tubular parts of the connectors 46 and 45.
- the second element 70 is then brought into contact with the first element 32 and the elements are secured by stapling.
- the second exchanger 12 thus constituted thus comprises a tubular bundle 80 proposing an exchange surface of fourteen tubes 51.
- the manufacture of the second heat exchanger according to this second embodiment implements an important part of elements which are common or identical with the first embodiment of the invention. realization, resulting in reduced manufacturing and tooling costs.
- circuit directly connects the various components of the air conditioning device, 1 the invention also applies to components connected to each other via other components such as for example a desiccator, control organs or control , valves or others;
- the invention also applies to other types of refrigerant fluids suitable for operation in transcritical cycle;
- cooling fluid is brine
- the invention also applies to other types of coolants such as alcohol, salt water, ammonia or chlorine. ammonium;
- the invention also applies to other embodiments of the elements such as stamping, forming, welding or machining;
- connections reported on the body of the second heat exchanger are tubular, 1 the invention also applies to other types of connectors such as bayonet connectors or cartridges type couplings;
- tubes of the tube bundle are crenellated and seven or fourteen, the invention also applies to tubes of any shape in number different, such as for example smooth tubes.
Landscapes
- 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)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1551660A FR3033194B1 (fr) | 2015-02-26 | 2015-02-26 | Circuit de climatisation transcritique a vase d'expansion integre |
| PCT/EP2016/053988 WO2016135245A1 (fr) | 2015-02-26 | 2016-02-25 | Circuit de climatisation transcritique à vase d'expansion intégré |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3262353A1 true EP3262353A1 (fr) | 2018-01-03 |
| EP3262353B1 EP3262353B1 (fr) | 2025-03-26 |
Family
ID=53776694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16707691.8A Active EP3262353B1 (fr) | 2015-02-26 | 2016-02-25 | Circuit de climatisation transcritique à vase d'expansion intégré |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20180017295A1 (fr) |
| EP (1) | EP3262353B1 (fr) |
| CN (1) | CN107636403B (fr) |
| FR (1) | FR3033194B1 (fr) |
| WO (1) | WO2016135245A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3062714A1 (fr) * | 2017-02-06 | 2018-08-10 | Valeo Systemes Thermiques | Circuit de gestion thermique et echangeur thermique associe |
| FR3099820B1 (fr) * | 2019-08-05 | 2022-11-04 | Air Liquide | Dispositif et installation de réfrigération |
| CN113188272B (zh) * | 2020-08-28 | 2023-04-18 | 三花控股集团有限公司 | 换热组件、换热装置及热管理系统 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2954213A (en) * | 1958-02-24 | 1960-09-27 | Marlo Coil Company | Heat exchangers |
| US4450904A (en) * | 1978-03-31 | 1984-05-29 | Phillips Petroleum Company | Heat exchanger having means for supporting the tubes in spaced mutually parallel relation and suppressing vibration |
| FR2691242B1 (fr) * | 1992-05-13 | 1994-07-08 | Valeo Thermique Moteur Sa | Boite a eau a vase d'expansion integre pour echangeur de chaleur, en particulier pour vehicule automobile. |
| DE4320343C2 (de) * | 1993-06-19 | 2002-11-21 | Behr Gmbh & Co | Wärmetauscher, insbesondere Querstromkühler für Brennkraftmaschinen |
| DE10349150A1 (de) * | 2003-10-17 | 2005-05-19 | Behr Gmbh & Co. Kg | Wärmeübertrager, insbesondere für Kraftfahrzeuge |
| DE202006000396U1 (de) * | 2005-02-18 | 2006-06-14 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Wärmetauscher |
| DE102006005035B3 (de) * | 2006-02-03 | 2007-09-27 | Airbus Deutschland Gmbh | Kühlsystem |
| EP2110274B1 (fr) * | 2008-04-18 | 2012-04-11 | Valeo Systemes Thermiques | Unité de chauffage et de climatisation améliorée pour véhicule automobile |
| WO2012093286A2 (fr) * | 2010-12-15 | 2012-07-12 | Grundfos Holding A/S | Système de transfert de chaleur |
| US9448018B2 (en) * | 2012-11-19 | 2016-09-20 | Robert Cooney | Expansion relief header for protecting heat transfer coils in HVAC systems |
| US20140262172A1 (en) * | 2013-03-14 | 2014-09-18 | Koch Heat Transfer Company, Lp | Tube bundle for shell-and-tube heat exchanger and a method of use |
| CN203810990U (zh) * | 2014-05-08 | 2014-09-03 | 浙江杭特容器有限公司 | 一种快速换热器 |
-
2015
- 2015-02-26 FR FR1551660A patent/FR3033194B1/fr active Active
-
2016
- 2016-02-25 US US15/553,444 patent/US20180017295A1/en not_active Abandoned
- 2016-02-25 EP EP16707691.8A patent/EP3262353B1/fr active Active
- 2016-02-25 WO PCT/EP2016/053988 patent/WO2016135245A1/fr not_active Ceased
- 2016-02-25 CN CN201680018614.XA patent/CN107636403B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107636403B (zh) | 2021-08-17 |
| CN107636403A (zh) | 2018-01-26 |
| US20180017295A1 (en) | 2018-01-18 |
| FR3033194B1 (fr) | 2017-03-24 |
| FR3033194A1 (fr) | 2016-09-02 |
| WO2016135245A1 (fr) | 2016-09-01 |
| EP3262353B1 (fr) | 2025-03-26 |
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