EP2199708B1 - Sammler mit innerem Wärmetauscher und mit internen multifunktionskomponent - Google Patents

Sammler mit innerem Wärmetauscher und mit internen multifunktionskomponent Download PDF

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Publication number
EP2199708B1
EP2199708B1 EP09178157A EP09178157A EP2199708B1 EP 2199708 B1 EP2199708 B1 EP 2199708B1 EP 09178157 A EP09178157 A EP 09178157A EP 09178157 A EP09178157 A EP 09178157A EP 2199708 B1 EP2199708 B1 EP 2199708B1
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EP
European Patent Office
Prior art keywords
wall
combined device
heat exchanger
internal
confinement
Prior art date
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Application number
EP09178157A
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English (en)
French (fr)
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EP2199708A1 (de
Inventor
Jimmy Lemee
Christophe Denoual
Alain Pourmarin
Eric Goyer
Michel Meiche
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes Thermiques SAS
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Valeo Systemes Thermiques SAS
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Publication of EP2199708A1 publication Critical patent/EP2199708A1/de
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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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006—Accumulators
    • 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
    • F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
    • 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
    • F25B37/00—Absorbers; Adsorbers
    • 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
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
    • 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
    • F28D7/04—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 spirally coiled
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/02—Centrifugal separation of gas, liquid or oil
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/051—Compression system with heat exchange between particular parts of the system between the accumulator and another part of the cycle

Definitions

  • the present invention is in the field of air conditioning loops cooperating with a ventilation system, heating and / or air conditioning of a motor vehicle. It relates to a combined device associating an internal heat exchanger and a participating accumulator of such a loop. Finally, it relates to an air conditioning loop comprising such a combined device.
  • a motor vehicle is commonly equipped with a ventilation, heating and / or air conditioning system to regulate the aerothermal parameters of the air contained inside the passenger compartment of the vehicle.
  • the installation consists mainly of a plastic housing that is housed under a dashboard of the vehicle. The housing channels the circulation of at least one air flow prior to the delivery of the latter inside the passenger compartment.
  • Such an installation cooperates with an air conditioning loop to cool the air flow prior to the evacuation of the latter out of the housing to the passenger compartment.
  • Said loop comprises a plurality of elements inside which circulates successively a cooling fluid, such as a supercritical fluid, carbon dioxide known under the reference R744 in particular.
  • a cooling fluid such as a supercritical fluid, carbon dioxide known under the reference R744 in particular.
  • These elements comprise at least one compressor, a gas cooler, an internal heat exchanger, an expansion member, an evaporator and an accumulator.
  • the refrigerant flows from the compressor to the gas cooler, then through a "high pressure” branch of the heat exchanger internal, then to the expansion member, then through the evaporator, then to the accumulator, and finally through a branch “low pressure” of the internal heat exchanger, to return to the compressor.
  • the compressor is intended to receive the refrigerant fluid in the gaseous state and to compress it to carry it at high pressure.
  • the gas cooler is adapted to cool the compressed refrigerant at a relatively constant pressure, giving up heat to its environment.
  • the expansion member is able to lower the pressure of the refrigerant leaving the gas cooler by bringing it at least partly in the liquid state.
  • the evaporator is itself capable of passing the coolant in the liquid state from the expansion element, at relatively constant pressure, to the gaseous state, by taking heat from said air flow which passes through the 'evaporator. The vaporized refrigerant is then sucked by the compressor.
  • the accumulator provides a separation function between a gaseous phase and a liquid phase of the refrigerant.
  • the accumulator comprises a separation zone inside which said phases dissociate from one another by gravity.
  • the accumulator also provides a storage function for a circulating coolant charge depending on the conditions of use of the air conditioning loop.
  • the accumulator comprises a refrigerant storage zone in the liquid state that the accumulation zone collects from the separation zone.
  • the accumulator consists of an enclosure housing the separation zone and the accumulation zone, the enclosure comprising a partition lower that defines the accumulation zone in the lower part of the enclosure.
  • the internal heat exchanger is configured so that the refrigerant circulating inside the branch "high pressure” can give heat to the refrigerant circulating inside the branch "low pressure”.
  • the document JP10019421 proposes to associate the internal heat exchanger and the accumulator in a combined device.
  • the latter comprises said enclosure which is provided with an opening closed by a cover.
  • the enclosure houses the internal heat exchanger which overhangs the coolant storage zone in the liquid state in the use position of the combined device on the air conditioning loop.
  • JP-A-2004 028 525 shows a combined device according to the preamble of claim 1.
  • such a combined device consists of a large number of disparate parts which generates manufacturing costs that should be reduced.
  • a second object of the present invention is to provide an air conditioning loop comprising such a combined device, the arrangement of the latter facilitating its integration on the air conditioning loop in certain conformations of the latter and improving a coefficient of performance "COP" of the said loop.
  • the duct advantageously comprises a first end equipped with a first opening which is formed through the delimiting wall and a second end equipped with a second opening which is formed through the confinement wall.
  • the delimiting wall is preferably provided with a flange which surrounds the first opening.
  • the flange is preferably flared towards the separation zone.
  • the delimiting wall is preferably shaped into a disc having a center provided with the first opening and a flange of which is provided with at least one positioning lug of the delimiting wall against the peripheral wall of the enclosure.
  • the confinement wall comprises in particular an internal face which is arranged vis-à-vis the partition wall.
  • the inner face is for example convex while being seen from the delimiting wall.
  • the internal face is for example still arranged in a bowl having a center of curvature C , indifferently disposed between the delimiting wall and the confinement wall or above the delimiting wall.
  • the bowl advantageously comprises a bottom arranged in a channel.
  • the confinement wall preferably comprises an inner edge provided with a first groove for receiving a first seal between the confinement wall and a central crown constituting the internal heat exchanger.
  • the confinement wall preferably comprises an outer edge provided with a second groove for receiving a second seal between the confinement wall and said peripheral wall.
  • At least one channel is provided between the internal face and an internal volume of the conduit.
  • At least one capillary is provided between the inner face and an outer face of the confinement wall, the outer face being opposite to said inner face.
  • the outer face is advantageously provided with a recess for the passage of an upper plug equipping a "low pressure" collector of the internal heat exchanger.
  • the confinement wall is preferably provided with a skirt to at least partially envelop the internal heat exchanger.
  • the skirt is for example provided with support grooves of the skirt against said peripheral wall.
  • the skirt is for example still provided with a lower bearing edge against the lower wall of the enclosure.
  • the skirt is in particular provided with at least one receiving window of at least one corresponding finger which is formed on a lower plate of the internal heat exchanger.
  • An air conditioning loop of the present invention is mainly recognizable in that said loop comprises such a combined device.
  • the duct advantageously constitutes a complementary heat exchange zone between the low-pressure refrigerant circulating inside the internal volume of the duct and the high-pressure refrigerant circulating inside the "high-pressure" collector.
  • a ventilation, heating and / or air conditioning equipment fitted to a motor vehicle cooperates with an air conditioning loop 1 for cooling a flow of air 2 prior to the delivery of the latter inside the passenger compartment of the vehicle.
  • the air conditioning loop 1 comprises a compressor 3, a gas cooler 4, an internal heat exchanger 5, an expansion device 6, an evaporator 7 and an accumulator 8 inside which a cooling fluid circulates, such as a supercritical fluid, carbon dioxide known under the reference R744 in particular.
  • An additive such as a lubricating oil, is mixed with the refrigerant to maintain the operation of the compressor 3, the lubricating oil having a density greater than that of the refrigerant.
  • the refrigerant flows from the compressor 3 to the gas cooler 4, then through a "high pressure” branch 9 of the internal heat exchanger 5, then to the expansion member 6, then through the 7, then to the accumulator 8, and finally through a branch "low pressure” 10 of the internal heat exchanger 5, to return to the compressor 3.
  • These provisions are intended to allow a heat exchange between the coolant circulating at high pressure and at high temperature inside said "high pressure” branch 9 and the coolant circulating at low pressure and at low temperature inside said "low pressure” branch 10. This results in an improvement a coefficient of performance "COP" of the air conditioning loop 1.
  • the air conditioning loop 1 comprises a "high pressure" line 17 which starts at the outlet of the compressor 3 and ends at the inlet of the expansion member 6, in a direction of circulation 11 of the refrigerant inside the airbag loop. air conditioning 1, the gas cooler 4 and the branch "high pressure" 9 of the internal heat exchanger 5 being interposed between these two points.
  • the air conditioning loop 1 also comprises a "low pressure" line 18 which starts at the outlet of the expansion member 6 and ends at the inlet of the compressor 3, in the direction of circulation 11 of the refrigerant inside the loop 1, the evaporator 7, the accumulator 8 and the branch "low pressure" 10 of the internal heat exchanger 5 being interposed between these two points.
  • the accumulator 8 disposed downstream of the evaporator 7 in the direction of circulation 11 of the refrigerant fluid inside the air conditioning loop 1, allows a separation of a gaseous phase and a liquid phase of the cooling fluid. from the evaporator 7 and then recovering the coolant and the lubricating oil in the liquid state.
  • the accumulator 8 comprises a separation zone 19 of said phases and an accumulation zone 20 of the liquid phase.
  • the internal heat exchanger 5 and the accumulator 8 are associated in a combined device 12 forming a one-piece assembly jointly ensuring the functions of the internal heat exchanger 5 and the accumulator 8.
  • the combined and monoblock characters of said device 12 allow the internal heat exchanger 5 and the accumulator 8 to be installed simultaneously on the air conditioning loop 1, the internal heat exchanger 5 and the accumulator 8 forming an integrated assembly. This has the effect of dispensing with a pipe installed in the engine compartment of the vehicle, between an outlet 22 of the accumulator 8 and an inlet 23 of the branch "low pressure" 10 of the internal heat exchanger 5.
  • the combined device 12 has a "high pressure” inlet 13 through which the refrigerant from the gas cooler 4 is admitted inside the combined device 12.
  • the combined device 12 also has a “high pressure” outlet 14 to through which the high pressure refrigerant is discharged from the combined device 12 to the expansion member 6.
  • the "high pressure" inlet 13 and the “high pressure” outlet 14 are connected to each other by the intermediate of a “high pressure” circulation path 24 which includes the branch "high pressure" 9.
  • the combined device 12 also has a "low pressure” inlet 15 through which refrigerant from the evaporator 7 is admitted into the combined device 12.
  • the combined device 12 finally has a “low pressure” outlet 16 through which the low pressure refrigerant is discharged from the combined device 12 to the compressor 3.
  • the "low pressure" inlet 15 and the “low pressure” outlet 16 are connected to each other via a "low pressure” circulation path 25 which comprises the "low pressure" branch 10 of the internal heat exchanger 5 and the separation zone 19.
  • the combined device 12 comprises an enclosure 26 which consists of an upper partition 27, a lower partition 28 and at least one peripheral wall 29.
  • the latter is in particular formed into an elongated tube whose ends are closed by an upper cover forming the upper partition 27 and a lower cover forming the lower partition 28.
  • the enclosure 26 houses the internal heat exchanger 5, the separation zone 19 and the accumulation zone 20.
  • the enclosure 26 houses a one-piece internal component 30 which is formed of a delimiting wall 31 of the separation zone 19 and of the accumulation zone 20, of a confinement wall 32 of the internal heat exchanger 5 with respect to the accumulation zone 20, and a conduit 33 which connects the confinement wall 32 and the boundary wall 31.
  • the designers of the present invention have made the choice to assign to a single single-piece internal component 30 all or active participation in the above functions of the combined device. This choice facilitates assembly operations of said combined device 12, reduces the size and weight of the latter, said integral monoblock component 30 being easily achievable at a lower cost.
  • the one-piece character of the inner component 30 is characterized by the fact that the inner component 30 is formed of an integral assembly 31, 32, 33 consisting of said delimiting wall 31, said confinement wall 32 and said duct 33, the integral assembly 31,32,33 being capable of being installed together inside the enclosure 26 in a single mounting operation.
  • the integral assembly 31,32,33 consists of a single piece made for example by injection of a plastic material.
  • the integral assembly 31, 32, 33 consists of two parts assembled by interlocking, by gluing or the like and respectively constituted for example on the one hand by the delimiting wall 31 and the duct 33 which confer the one-piece character and on the other hand of the confinement wall 32, or constituted for example again on the one hand the delimiting wall 31, and on the other hand the conduit 33 and the confinement wall 32 which gives the monoblock character.
  • the boundary wall 31 partially isolates the separation zone 19 and the accumulation zone 20 from each other.
  • the boundary wall 31 is interposed between the separation zone 19 and the accumulation zone 20.
  • the confinement wall 32 isolates the accumulation zone 20 and the heat exchanger 5 from each other. The latter is interposed between the confinement wall 32 and the lower partition 28. It can be seen that the zone accumulation 20 is itself interposed between the delimiting wall 31 and the confinement wall 32.
  • the conduit 33 is interposed between the boundary wall 31 and the containment wall extending inside the accumulation zone 20.
  • the conduit 33 has a first end 34 equipped with a first opening 35 which is provided through the delimiting wall 31 and a second end 36 equipped with a second opening 37 which is formed through the confinement wall 32.
  • the duct 33 delimits an internal volume 38 which is in aeraulic communication with the separation zone 19 through through the first opening 35 and with the internal heat exchanger 5 through the second opening 37.
  • the delimiting wall 31 is provided with a flange 39 which is formed around the first opening 35 while being flared from the delimiting wall 31 to the separation zone 19.
  • These provisions are intended to facilitate an admission of the refrigerant fluid in the gaseous state inside the internal volume 38 of the conduit 33 and to prevent an admission of the coolant fluid in the liquid state inside of said internal volume 38. It finally results that the refrigerant fluid from the evaporator 7 is cyclically split into gas and liquid following its admission inside the separation zone 19 via a nozzle 40 fitted to the "low pressure" inlet 15 of the combined device 12.
  • the nozzle 40 is for example formed into a cylinder provided with a tangential orifice 41 to facilitate said split between the coolant in the liquid state and the fluid refrigerant in the gaseous state.
  • the coolant in the liquid state tends to drop by gravity from the nozzle 40 to the boundary wall 31 while the refrigerant fluid in the gaseous state disperses within the separation zone 19 up to including penetrate inside said internal volume 38.
  • the delimiting wall 31 is in the form of a disk, a center 42 of which is provided with the first opening 35 and a flange 43 of which is provided with lugs 44 for positioning the delimiting wall 31 against the peripheral wall 29 of the enclosure 26 .
  • the confinement wall 32 is provided with a skirt 45 to at least partially envelop the internal heat exchanger 5.
  • the skirt 45 covers the internal heat exchanger 5 and isolates the latter from the peripheral wall 29 of the enclosure 26.
  • the skirt 45 is for example provided with bearing grooves 46 of the skirt 45 against said peripheral wall 29.
  • the skirt 45 has a lower border 47 bearing against the lower wall 28 of the enclosure 26.
  • the upper partition 27 is the one provided with the nozzle 40.
  • the identification of the nozzle 40 on the combined device 12 determines that of the partitions 27 28, which is the so-called upper partition, either in the position of use of the combined device 12, or in the realistic operating position thereof.
  • the upper partition 27 is arranged in a retractable top cover and provided with the "low pressure” inlet 15 and the “high pressure” outlet 14 while the lower partition 28 is arranged. in a retractable bottom cover and provided with the "high pressure” inlet 13 and the "low pressure” outlet 16.
  • the "high pressure" inlet 13 is in communication with a peripheral "high pressure” collector 51 which is in connection with a peripheral end 52 of a flat tube 21.
  • the latter is wound on itself around the longitudinal extension axis ⁇ up to a central end 49 of said flat tube 21.
  • the said central end 49 is provided with a central "high pressure" collector 48 which is housed at least partially inside the conduit 33.
  • the conduit 33 constitutes a zone complementary heat exchange between the low-pressure refrigerant circulating inside the internal volume 38 of the conduit 33 and the high-pressure refrigerant circulating inside the central "high pressure" collector 48.
  • the flat tube 21 is bordered by two secondary flat tubes 50 inside which circulates the refrigerant fluid at low pressure.
  • the flat tube 21 is bordered by a single secondary flat tube 50, indifferently internal or external.
  • the flat tube 21 is simply bathed in the low-pressure refrigerant fluid which flows inside an interstitial space formed between two consecutive turns of the winding of the flat tube 21 on it -even.
  • the central "high pressure" collector 48 is arranged in a central tube provided with a lower plug 53, the "high pressure” peripheral collector 51 being arranged in a peripheral tube provided with an upper plug 54.
  • the heat exchanger internal 5 comprises an upper plate 55 covering the winding of the flat tube 21 and optionally the flat tube (s) flat (s) secondary (s) 50 and a lower plate 56 covering the winding of the flat tube 21 and possibly the secondary flat tube (s) 50.
  • the upper plate 55 and the lower plate 56 take respectively support against the upper slices 57 and lower 58 of the flat tube 21 and optionally or the flat tube (s) secondary (s) 50.
  • Said upper plate 55 is provided with an orifice 59 for passing through the upper plug 54 which emerges beyond the upper plate 55.
  • the upper plate 55 is also provided with a central ring 60 formed on an outer face 61 of the upper plate 55, said outer face 61 being that which is free of contact with the flat tube 21 and possibly the flat tube (s) or (s) secondary (s) 50.
  • the central ring 60 is provided with a receiving groove 62 of a first seal, visible on the fig.8 .
  • the central ring 60 has a passage 63 for the passage of the central "high pressure" collector 48.
  • the upper plate 55 finally has an oblong hole 100 whose function is to allow the passage of the oil which accumulates between the face outer wall 77 of the confinement wall 32 and the upper plate 55 to direct it towards the "low pressure" outlet 16, when using the integral inner component as shown in FIGS. figures 9 or 10 .
  • Said bottom plate 56 is provided with a hole 64 which comes opposite said "low pressure" outlet 16 for the discharge of the refrigerant from the combined device 12 to the compressor 3.
  • Said lower plate 56 is also provided with fingers 65 formed on a slice of said bottom plate 56 for their interlocking inside corresponding windows 66 formed on the skirt 45, said windows being visible on the fig.6
  • the skirt 45 is provided with a notch 67 for the passage of the refrigerant fluid at low pressure on either side of the skirt 45, and thus allow a recovery of the refrigerant fluid having passed between the skirt 45 and the wall device 29 of the enclosure 26.
  • said lower platen 56 consists of two elementary platens 68, 69, including an upper platinum element 68 and a platinum Lower elementary element 69. Between the upper elementary plate 68 and the lower elementary plate 69, a reserve of oil 70 is formed.
  • the lower elementary plate 69 is provided with a radial notch 71 for receiving an oil filter 72.
  • the confinement wall 32 has an internal face 73 which is formed opposite the delimiting wall 31, the confinement wall 32 and the delimiting wall 31 being generally parallel to each other while being substantially orthogonal to said longitudinal extension axis ⁇ of said combined device 12 and to an axis of symmetry ⁇ ' of the conduit 33.
  • the inner face 73 is convex while being seen from the boundary wall 31, so that the lubricating oil accompanying the coolant in the liquid state can easily flow along the inner face 73 for s' spreading between the peripheral wall 29 and the skirt 45, and regaining said "low pressure" outlet 16 through said radial notch 71.
  • the containment wall 32 has an inner edge 74 provided with a first groove 75 for receiving said first seal 76 between the confinement wall 32 and the central ring 60 constituting the internal heat exchanger 5.
  • the containment wall 32 has an outer face 77, opposite to the inner face 73, which is provided with a recess 78 for the passage of the upper plug 54 fitted to the "high pressure" collector 51 of the internal heat exchanger 5.
  • the inner face 73 is arranged in a bowl having a center of curvature C interposed between the delimiting wall 31 and the confinement wall 32.
  • the center of curvature C is placed above the delimiting wall 31.
  • the bowl 73 comprises a bottom 79 arranged in a channel so as to collect the oil which circulates with the refrigerant.
  • the confinement wall 32 comprises an outer edge 80 provided with a second groove 81 for receiving a second seal 82 between the confinement wall 32 and said peripheral wall 29.
  • a channel 83 is formed between the inner face 73 and the outer face 77 of the containment wall 32.
  • Such a channel 83 which extends from the inner face 73 to the outer face 77 of the confinement wall 32 allows reintegration lubricating oil at said "low pressure" outlet 16 of the combined device 12, that is to say downstream of the internal heat exchanger 5 in a direction of circulation 11 of the refrigerant to the The interior of the air-conditioning loop 1.
  • a hole 84 is formed between the inner face 73 and an internal volume 38 of the conduit 33.
  • Such a hole 84 allows a reintegration of the lubricating oil at the inlet 23 of the branch "low pressure" 10 of the internal heat exchanger 5, that is to say upstream of the internal heat exchanger 5 in a direction of circulation 11 of the refrigerant inside the air conditioning loop 1.

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

Claims (15)

  1. Kombinierte Vorrichtung (12), die eine Umfassung (26) enthält, welche aus einer oberen Trennwand (27), einer unteren Trennwand (28) und mindestens einer Umfangswand (29) besteht, wobei in der Umfassung (26) ein innerer Wärmetauscher (5), eine Trennzone (19) und eine Speicherzone (20) untergebracht sind, dadurch gekennzeichnet, dass in der Umfassung (26) auch ein inneres einstückiges Bauteil (30) untergebracht ist, das besteht aus:
    - einer Abgrenzungswand (31) der Trennzone (19) und der Speicherzone (20),
    - einer Einschließungswand (32) des inneren Wärmetauschers (5) bezüglich der Speicherzone (20),
    - und einem Kanal (33), der die Einschließungswand (32) und die Abgrenzungswand (31) verbindet.
  2. Kombinierte Vorrichtung (12) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Kanal (33) ein erstes Ende (34), das mit einer ersten Öffnung (35) ausgestattet ist, die durch die Abgrenzungswand (31) hindurch ausgespart ist, und ein zweites Ende (36) aufweist, das mit einer zweiten Öffnung (37) ausgestattet ist, die durch die Einschließungswand (32) hindurch ausgespart ist.
  3. Kombinierte Vorrichtung (12) nach Anspruch 2, dadurch gekennzeichnet, dass die Abgrenzungswand (31) mit einem Kragen (39) versehen ist, der die erste Öffnung (35) umgibt.
  4. Kombinierte Vorrichtung (12) nach Anspruch 3, dadurch gekennzeichnet, dass der Kragen (39) sich zur Trennzone (19) hin ausweitet.
  5. Kombinierte Vorrichtung (12) nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass die Abgrenzungswand (31) die Form einer Scheibe hat, deren Mitte (42) mit der ersten Öffnung (35) versehen ist und deren Randleiste (43) mit mindestens einem Positionierzapfen (44) der Abgrenzungswand (31) gegen die Umfangswand (29) der Umfassung (26) ausgestattet ist.
  6. Kombinierte Vorrichtung (12) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Einschließungswand (32) eine Innenseite (73) aufweist, die gegenüber der Trennwand (31) angeordnet ist.
  7. Kombinierte Vorrichtung (12) nach Anspruch 6, dadurch gekennzeichnet, dass die Innenseite (73) von der Abgrenzungswand (31) her gesehen konvex ist.
  8. Kombinierte Vorrichtung (12) nach Anspruch 6, dadurch gekennzeichnet, dass die Innenseite (73) in Form einer Schale eingerichtet ist, die einen Krümmungsmittelpunkt C aufweist, der beliebig zwischen der Abgrenzungswand (31) und der Einschließungswand (32) oder über der Abgrenzungswand (31) angeordnet ist.
  9. Kombinierte Vorrichtung (12) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Einschließungswand (32) einen Innenrand (74) aufweist, der mit ersten Rille (75) zur Aufnahme einer ersten Dichtung (76) zwischen der Einschließungswand (32) und einem zentralen Ring (60) ausgestattet ist, der Bestandteil des inneren Wärmetauschers (5) ist.
  10. Kombinierte Vorrichtung (12) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Einschließungswand (32) einen Außenrand (80) aufweist, der mit einer zweiten Rille (81) zur Aufnahme einer zweiten Dichtung (82) zwischen der Einschließungswand (32) und der Umfangswand (29) ausgestattet ist.
  11. Kombinierte Vorrichtung (12) nach einem der Ansprüche 6 bis 10, dadurch gekennzeichnet, dass mindestens ein Loch (84) zwischen der Innenseite (73) und einem Innenvolumen (38) des Kanals (33) ausgespart ist.
  12. Kombinierte Vorrichtung (12) nach einem der Ansprüche 6 bis 10, dadurch gekennzeichnet, dass mindestens eine Kapillare (83) zwischen der Innenseite (73) und einer Außenseite (77) der Einschließungswand (32) ausgespart ist, wobei die Außenseite (77) der Innenseite (73) gegenüber liegt.
  13. Kombinierte Vorrichtung (12) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Einschließungswand (32) mit einer Schürze (45) ausgestattet ist, um den inneren Wärmetauscher (5) zumindest teilweise zu umhüllen.
  14. Klimatisierungskreislauf (1), der eine kombinierte Vorrichtung (12) nach einem der vorhergehenden Ansprüche aufweist.
  15. Klimatisierungskreislauf (1) nach Anspruch 14, der von einem überkritischen Kühlmittel durchflossen wird, dadurch gekennzeichnet, dass:
    - die Trennzone (19) eine Abgrenzungszone zwischen einer gasförmigen Phase des Kühlmittels und einer flüssigen Phase des Kühlmittels bildet, und
    - die Speicherzone (20) eine Speicherzone der von der Trennzone (19) kommenden flüssigen Phase des Kühlmittels bildet.
EP09178157A 2008-12-22 2009-12-07 Sammler mit innerem Wärmetauscher und mit internen multifunktionskomponent Active EP2199708B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0807423A FR2940419B1 (fr) 2008-12-22 2008-12-22 Dispositif combine constitue d'un echangeur de chaleur interne et d'un accumulateur, et pourvu d'un composant interne multifonctions

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FR2940419A1 (fr) 2010-06-25
CN101762131B (zh) 2014-10-29
JP5421091B2 (ja) 2014-02-19
JP2010143574A (ja) 2010-07-01
ATE530865T1 (de) 2011-11-15
CN101762131A (zh) 2010-06-30
EP2199708A1 (de) 2010-06-23
US9464831B2 (en) 2016-10-11
FR2940419B1 (fr) 2010-12-31
ES2375917T3 (es) 2012-03-07
US20100155017A1 (en) 2010-06-24

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