EP2737267A1 - Cylinder for storing coolant, and heat exchanger including such a cylinder - Google Patents

Cylinder for storing coolant, and heat exchanger including such a cylinder

Info

Publication number
EP2737267A1
EP2737267A1 EP12738137.4A EP12738137A EP2737267A1 EP 2737267 A1 EP2737267 A1 EP 2737267A1 EP 12738137 A EP12738137 A EP 12738137A EP 2737267 A1 EP2737267 A1 EP 2737267A1
Authority
EP
European Patent Office
Prior art keywords
bottle
housing
partition wall
cylinder
bottle according
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
Application number
EP12738137.4A
Other languages
German (de)
French (fr)
Other versions
EP2737267B1 (en
Inventor
Laurent Moreau
Christophe VOIDIE
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
Original Assignee
Valeo Systemes Thermiques SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Priority to PL12738137T priority Critical patent/PL2737267T3/en
Publication of EP2737267A1 publication Critical patent/EP2737267A1/en
Application granted granted Critical
Publication of EP2737267B1 publication Critical patent/EP2737267B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/003—Filters
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/044—Condensers with an integrated receiver
    • F25B2339/0441—Condensers with an integrated receiver containing a drier or a filter
    • 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
    • F25B2400/16—Receivers
    • F25B2400/162—Receivers characterised by the plug or stop

Definitions

  • the present invention relates to a refrigerant reservoir bottle and a heat exchanger, in particular a condenser, comprising such a bottle.
  • the invention finds a particularly advantageous application in the field of air conditioning of motor vehicles.
  • the air conditioning circuits must meet a certain number of strict criteria concerning the ambient conditions in which the refrigerant circulates, such as the fluid known under the name R134A.
  • the coolant must be able to circulate in a humidity-free environment, since the water molecules tend to produce acidic compounds in the presence of R134A and oil. These compounds then attack the circuit components, which can cause leaks and loss of functionality.
  • bottles There are two major families of bottles, namely so-called bottles reported and so-called integrated bottles.
  • Bottle inserts are supplied already equipped with a filter and a desiccator. They are assembled to the condenser in finishing, by means of screws and O-rings. However, if this type of bottle has the advantage of being removable, it still requires a specific assembly operation, expensive.
  • the integrated bottles are pre-assembled to the condenser and undergo the soldering process used to assemble the condenser.
  • the integrated bottles have an opening through which the filter and the desiccant can be introduced into the finished bottles, the opening being closed by a removable cap. It is also possible with this solution to change at will the filter and the desiccator without changing the entire condenser.
  • Such sealed integrated bottle systems are known in which the opening intended for the introduction of the filter and the desiccator is closed by a capsule sealed by tungsten welding under inert gas (known as TIG welding) or by laser welding.
  • the present invention aims to improve the situation and proposes for this purpose a refrigerant reservoir bottle, intended to equip a heat exchanger of an air conditioning circuit, said bottle defining a first housing accommodating a desiccator and a second housing, suitable for allowing a fluid communication with said circuit, said bottle being configured so that said first and second housings remain isolated from one another to a first internal pressure threshold and are placed in fluid communication once said second housing subject to a second internal pressure threshold, greater than the first threshold.
  • the desiccator will remain confined inside the bottle, thereby preventing any pollution of the soldering atmosphere by the moisture susceptible to escape due to the degassing of the desiccator.
  • the confinement of the desiccator can be lifted, thus enabling the desiccative action of the latter.
  • said bottle is metallic, in particular aluminum or aluminum alloys
  • the bottle comprises a separating wall, isolating said first and second housings from one another, said partition wall being provided with a pressure fuse
  • the bottle comprises so-called lateral walls separating said first and second housings from the outside, and the partition wall is made of material from one and / or the other of said side walls,
  • said partition wall has a thickness of between 0.07 and 0.7 mm, in particular between 0.2 and 0.5 mm,
  • said bottle comprises a first tubular body defining said first housing and a second body defining said second housing, said first tubular body having an open end closed by said second body so that said second body defines said partition wall,
  • the second body has an open tubular shape at one of its ends
  • the bottle comprises a closing cap of the second body, soldered to said second body,
  • the second body has a first thickness at the separation wall and a greater thickness at the side wall of the bottle
  • the first and second bodies are of substantially circular section and have a substantially identical diameter
  • said first body and / or said second body are formed by extrusion impact
  • said bottle comprises a weld bead between said first body and said second body.
  • the invention also relates to a heat exchanger, in particular a condenser, comprising a bottle as described above.
  • a heat exchanger in particular a condenser, comprising a bottle as described above.
  • said partition wall may be punctured, in particular after subjecting the exchanger to a leak test.
  • Figure 1 is an exploded perspective view of an example of a bottle according to the invention.
  • Figure 2 is a perspective view, in a diametral sectional plane, of the bottle of Figure 1, shown in an assembled manner.
  • Figure 3 is a view illustrating the separation wall of the bottle of the preceding figures, once burst.
  • FIG. 4 is a schematic view illustrating from the front an example of a condenser according to the invention.
  • the invention relates to a refrigerant fluid reservoir bottle 1 intended to equip a heat exchanger of an air conditioning circuit, in particular a condenser,
  • Said bottle 1 defines a first housing 2 accommodating a desiccator, not shown, and a second housing 3, adapted to allow a fluid communication with said air conditioning circuit, in particular via two orifices 4, 5 inlet / outlet .
  • Said housing 2, 3 are in the extension of one another along the longitudinal axis of the bottle.
  • said bottle 1 is configured so that said first 2 and second housing 2 remain isolated from one another to a first internal pressure threshold and are placed in fluid communication once said second housing 3 subject to a second internal pressure threshold, greater than the first threshold.
  • Said first internal pressure threshold corresponds, for example, to a pressure greater than the differential pressure likely to be encountered between said first housing 2, provided subjected to diffusion phenomena of the desiccator under the effect of the heat generated by an operation brazing in which the bottle is involved, and said second housing 3, provided subjected to the soldering atmosphere.
  • Said second internal pressure threshold corresponds, for example, to a leak test pressure such as the pressure used for the helium leak tests performed on the condensers.
  • the dryer remains confined in the first housing 2. After the leak test, it is against in the fluid circuit, the latter can pass from said second housing 3 to said first housing 2.
  • Said bottle 1 comprises, in particular, walls 6, 7, said side, separating said first 1 and second 2 housing from the outside and a wall 8, isolating said first 1 and said second housing 2 from each other.
  • Said partition wall 8 is provided with a fuse under pressure, as will be developed in connection with FIG.
  • Said partition wall is, for example, derived from material of one 6 and / or the other 7 of said side walls. This provides a particularly simple bottle without insert to define the solution to isolate the dryer during soldering.
  • Said partition wall 8 has, for example, a thickness of between 0.07 and 0.7 mm, in particular between 0.2 and 0.5 mm.
  • said bottle may be metallic, for example aluminum or aluminum alloys.
  • Said bottle 1 comprises, in particular, a first tubular body 9 defining said first housing 2 and a second body 10 defining said second housing 3.
  • Said first tubular body 9 has an open end 1 1, closed by said second body 10 so that said second body 10 defines said partition wall 8.
  • the second body 10 may also have a tubular shape, open at one of its ends.
  • the bottle 1 may also comprise a closure cap 13 of the second body 10, soldered to said second body 10 at said open end 12 of the latter.
  • Said second body 10 has said inlet / outlet ports 4, 5 for the fluid. They are here located on its side wall 7.
  • a filter may be located in said second body 10 between said orifices 4, 5.
  • the second body 10 may have at least two separate thicknesses; a first thickness such as that mentioned above at the partition wall 8 and a greater thickness at its side wall 7. It may be a thickness of 1 to 2 mm, in particular 1.5 mm, the thickness of the partition wall 8 then being, for example, 0.4 mm.
  • the first 9 and second 10 bodies are of substantially circular section and have a substantially identical diameter. They are formed, for example, by extrusion impact. They may be connected by a weld bead 14, obtained by TIG, MIG, laser welding or other welding process. As shown in Figure 3, said partition wall 8, after being subjected to a pressure exceeding the second pressure threshold, is burst. This figure shows the tearing of material allowing the creation of a passage opening 15 in said partition wall 8, allowing the communication of the first housing 2 and the second housing 3.
  • the first housing 2 before application of said second pressure threshold, the first housing 2 is isolated and protects from diffusion from the desiccator while, after application of said second pressure threshold or a higher pressure, said first housing 2 is connected to the second housing 3 by the creation said passage opening 15 between said housings 2, 3.
  • the invention also relates to a heat exchanger, in particular a condenser, provided with a bottle 1 as described above.
  • It comprises a bundle 30 of fluid circulation tubes 20 and spacers 21, located between the tubes 20. It further comprises collectors 22 in which the tubes 20 open at their ends 20a.
  • the collectors 20 are here provided with flange 23, 24 input / output.
  • the bottle 1 is located parallel to one of the manifolds 22.
  • the condenser allows a flow of fluid between the bottle 1 and the collector 22 neighbor, for example via the inlet / outlet ports 4, 5 of said bottle 1 so that the condenser here has a subcooling pass.
  • the partition wall 8 of the bottle 1 is sealed. It is configured to stay watertight during soldering. It is further configured to be punctured after brazing, for example under the effect of a pressure tightness test of said condenser. In this way, it enables the first and second housings 2, 3 of said bottle 1 to communicate with one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Combustion & Propulsion (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Abstract

The invention relates to a cylinder for storing coolant, with which a heat exchanger of an air-conditioning circuit is to be provided, said cylinder defining a first cavity (2) accommodating a desiccator, and a second cavity (3) capable of enabling fluid communication with said circuit. Said cylinder is configured such that said first (2) and second (3) cavities remain isolated from each other up to a first inner pressure threshold, and are placed in fluid communication once said second cavity (3) is subjected to a second inner pressure threshold that is greater than the first threshold. The invention also relates to a condenser provided with such a cylinder.

Description

BOUTEILLE RESERVOIR DE FLUIDE REFRIGERANT ET ECHANGEUR DE CHALEUR COMPRENANT UNE TELLE BOUTEILLE  BOTTLE REFRIGERANT FLUID TANK AND HEAT EXCHANGER COMPRISING SUCH A BOTTLE
La présente invention concerne une bouteille réservoir de fluide réfrigérant et un échangeur de chaleur, notamment condenseur, comprenant une telle bouteille. The present invention relates to a refrigerant reservoir bottle and a heat exchanger, in particular a condenser, comprising such a bottle.
L'invention trouve une application particulièrement avantageuse dans le domaine de la climatisation des véhicules automobiles.  The invention finds a particularly advantageous application in the field of air conditioning of motor vehicles.
D'une manière générale, les circuits de climatisation doivent répondre à un certain nombre de critères stricts concernant les conditions d'ambiance dans lesquelles circule le fluide réfrigérant, tel que le fluide connu sous l'appellation R134A.  In general, the air conditioning circuits must meet a certain number of strict criteria concerning the ambient conditions in which the refrigerant circulates, such as the fluid known under the name R134A.
En effet, il faut éviter la présence dans le circuit de corps étrangers trop nombreux ou d'une taille trop importante, car ils peuvent générer des problèmes pouvant mener jusqu'à la casse de certains composants des circuits de climatisation, comme le compresseur.  Indeed, it is necessary to avoid the presence in the circuit of too many foreign bodies or too large, because they can generate problems that can lead to the breakage of some components of the air conditioning circuits, such as the compressor.
D'autre part, le fluide réfrigérant doit pouvoir circuler dans une ambiance exempte d'humidité, car les molécules d'eau ont tendance à produire des composés acides en présence de R134A et d'huile. Ces composés attaquent alors les composants du circuit, ce qui peut occasionner des fuites et la perte de fonctionnalités.  On the other hand, the coolant must be able to circulate in a humidity-free environment, since the water molecules tend to produce acidic compounds in the presence of R134A and oil. These compounds then attack the circuit components, which can cause leaks and loss of functionality.
II est connu d'équiper les circuits de climatisation de bouteilles contenant une certaine quantité de fluide réfrigérant en phase liquide. Ces bouteilles servent, d'une part, de réservoirs de fluide destinés à compenser d'éventuelles fuites dans les circuits, et, d'autre part, à garantir, qu'en sortie des bouteilles, le fluide réfrigérant est totalement en phase liquide avant d'être acheminé en aval. Dans des réalisations particulières, la sortie de la bouteille est ramenée dans une section du condenseur de manière à faire subir au fluide réfrigérant liquide un passage supplémentaire, dit de sous- refroidissement.  It is known to equip the air conditioning circuits of bottles containing a certain amount of coolant in the liquid phase. These bottles serve, on the one hand, fluid reservoirs intended to compensate for possible leaks in the circuits, and, on the other hand, to guarantee that, at the outlet of the bottles, the refrigerant fluid is completely in the liquid phase before to be routed downstream. In particular embodiments, the outlet of the bottle is returned to a section of the condenser so as to subject the liquid coolant an additional passage, said subcooling.
Il est aussi connu de tirer profit de la présence de bouteilles réservoirs sur le trajet suivi par le fluide réfrigérant pour résoudre les problèmes d'ambiance évoqués plus haut. A cet effet, un filtre et un dessiccateur sont disposés à l'intérieur des bouteilles afin d'éliminer au maximum la présence de corps étrangers et d'humidité dans les boucles de circulation du fluide réfrigérant. It is also known to take advantage of the presence of reservoir bottles on the path followed by the coolant to solve the ambient problems mentioned above. For this purpose, a filter and a desiccator are placed inside the bottles in order to eliminate as much as possible the presence foreign bodies and moisture in the circulation loops of the refrigerant.
Il existe deux grandes familles de bouteilles, à savoir les bouteilles dites rapportées et les bouteilles dites intégrées.  There are two major families of bottles, namely so-called bottles reported and so-called integrated bottles.
Les bouteilles rapportées sont fournies déjà équipées d'un filtre et d'un dessiccateur. Elles sont assemblées au condenseur en finition, au moyen de vis et de joints toriques. Cependant, si ce type de bouteilles présente l'avantage d'être démontable, il n'en exige pas moins une opération spécifique d'assemblage, coûteuse.  Bottle inserts are supplied already equipped with a filter and a desiccator. They are assembled to the condenser in finishing, by means of screws and O-rings. However, if this type of bottle has the advantage of being removable, it still requires a specific assembly operation, expensive.
Les bouteilles intégrées sont pré assemblés au condenseur et subissent le processus de brasage servant à l'assemblage de ce dernier.  The integrated bottles are pre-assembled to the condenser and undergo the soldering process used to assemble the condenser.
En cas de présence du dessiccateur dans la bouteille lors du brasage, celui subirait un dégazage qui pose problème. On prévoit ainsi sur les bouteilles intégrées une ouverture à travers laquelle le filtre et le dessiccateur peuvent être introduits dans les bouteilles en finition, l'ouverture étant fermée par un bouchon amovible. Il est d'ailleurs possible avec cette solution de changer à volonté le filtre et le dessiccateur sans changer l'ensemble du condenseur.  In case of presence of the desiccator in the bottle during soldering, that would undergo degassing which poses a problem. Thus, the integrated bottles have an opening through which the filter and the desiccant can be introduced into the finished bottles, the opening being closed by a removable cap. It is also possible with this solution to change at will the filter and the desiccator without changing the entire condenser.
Afin de réduire les coûts de fabrication et les risques de fuites inhérents au système d'étanchéité par joints toriques des bouchons amovibles, il y a avantage à utiliser des systèmes de bouteilles intégrées scellées.  In order to reduce the manufacturing costs and the leakage risks inherent in the O-ring sealing system of removable plugs, it is advantageous to use sealed integrated bottle systems.
On connaît de tels systèmes de bouteilles intégrées scellées dans lesquels l'ouverture prévue pour l'introduction du filtre et du dessiccateur est fermée par une capsule scellée par soudure au tungstène sous gaz inerte (soudure dite TIG) ou par soudure laser.  Such sealed integrated bottle systems are known in which the opening intended for the introduction of the filter and the desiccator is closed by a capsule sealed by tungsten welding under inert gas (known as TIG welding) or by laser welding.
Toutefois, cette solution n'est pas très intéressante en termes de coût, car la soudure TIG ou laser en finition est relativement lourde.  However, this solution is not very interesting in terms of cost, because the TIG or laser welding finish is relatively heavy.
C'est pourquoi on a envisagé des bouteilles, pré équipées d'un filtre et d'un dessiccateur, scellées et brasées en une seule opération avec le condenseur lors du brasage de ce dernier. Cette solution est susceptible d'être très économique car il n'y a pas d'autres opérations supplémentaires à implémenter sur le condenseur en sortie du four de brasage.  This is why bottles, pre-equipped with a filter and a desiccator, were sealed and brazed in a single operation with the condenser during soldering of the latter. This solution is likely to be very economical because there are no other additional operations to be implemented on the condenser at the outlet of the brazing furnace.
Il subsiste cependant une difficulté avec ce type de solution qui réside dans le comportement du dessiccateur au cours du processus de brasage. Plus précisément, à haute température, celui-ci a tendance à diffuser, vers le condenseur avec lequel il communique, de l'humidité qui pollue l'atmosphère neutre du four et perturbe l'opération de brasage. Il en résulte des fuites dans les condenseurs fabriqués qui interdisent l'industrialisation de cette solution. However, there remains a difficulty with this type of solution that lies in the behavior of the dryer during the soldering process. More precisely, at high temperature, this one tends to diffuse, towards the condenser with which it communicates, moisture that pollutes the neutral atmosphere of the furnace and disrupts the soldering operation. This results in leaks in the condensers manufactured that prohibit the industrialization of this solution.
Une solution a été proposée qui consiste à confiner le dessiccateur dans une partie de la bouteille par le biais d'un filtre métallique, enduit de polyuréthane. Cela permet de maintenir la pollution due au dégazage du dessiccateur pendant le processus de brasage du condenseur. Une fois le brasage effectué, le polyuréthane disparaît permettant la circulation du R134A au contact du dessiccateur. Les paramètres permettant de maîtriser la disparition du polyuréthane sont cependant complexes.  One solution has been proposed which consists in confining the desiccator in a part of the bottle by means of a metal filter, coated with polyurethane. This maintains the pollution due to outgassing of the desiccator during the brazing process of the condenser. Once soldering, the polyurethane disappears allowing the circulation of R134A in contact with the desiccator. The parameters for controlling the disappearance of the polyurethane are however complex.
La présente invention vise à améliorer la situation et propose à cet effet une bouteille réservoir de fluide réfrigérant, destinée à équiper un échangeur de chaleur d'un circuit de climatisation, ladite bouteille définissant un premier logement accueillant un dessiccateur et un second logement, apte à autoriser une communication de fluide avec ledit circuit, ladite bouteille étant configurée pour que lesdits premier et second logements restent isolés l'un de l'autre jusqu'à un premier seuil de pression interne et soient mis en communication de fluide une fois ledit second logement soumis à un second seuil de pression interne, supérieur au premier seuil.  The present invention aims to improve the situation and proposes for this purpose a refrigerant reservoir bottle, intended to equip a heat exchanger of an air conditioning circuit, said bottle defining a first housing accommodating a desiccator and a second housing, suitable for allowing a fluid communication with said circuit, said bottle being configured so that said first and second housings remain isolated from one another to a first internal pressure threshold and are placed in fluid communication once said second housing subject to a second internal pressure threshold, greater than the first threshold.
Ainsi, on comprend que, lors du processus de brasage dans lequel la bouteille est destinée à être impliquée, le dessiccateur restera confiné à l'intérieur de la bouteille, empêchant de cette manière toute pollution de l'atmosphère de brasage par l'humidité susceptible de s'échapper du fait du dégazage du dessiccateur. Par contre, à l'issue de l'opération de brasage, le confinement du dessiccateur pourra être levé, permettant de la sorte l'action dessiccative de ce dernier.  Thus, it is understood that, during the brazing process in which the bottle is intended to be involved, the desiccator will remain confined inside the bottle, thereby preventing any pollution of the soldering atmosphere by the moisture susceptible to escape due to the degassing of the desiccator. On the other hand, at the end of the brazing operation, the confinement of the desiccator can be lifted, thus enabling the desiccative action of the latter.
On dispose ainsi d'une solution dans laquelle le dessiccateur reste isolé pendant le brasage et dans laquelle, après brasage, la bouteille permet la circulation du fluide au contact du dessiccateur. Le choix de la pression comme paramètre permettant de passer d'un mode à l'autre autorise en outre un contrôle simplifié des opérations.  There is thus a solution in which the desiccator remains isolated during brazing and in which, after brazing, the bottle allows the circulation of the fluid in contact with the desiccator. The choice of pressure as a parameter to switch from one mode to another also allows simplified control of operations.
Selon différents modes de réalisation, qui pourront être pris ensemble ou séparément :  According to different embodiments, which can be taken together or separately:
- ladite bouteille est métallique, notamment en aluminium ou alliages d'aluminium, - la bouteille comprend une paroi de séparation, isolant lesdits premier et second logements l'un de l'autre, ladite paroi de séparation étant prévue fusible sous pression, said bottle is metallic, in particular aluminum or aluminum alloys, the bottle comprises a separating wall, isolating said first and second housings from one another, said partition wall being provided with a pressure fuse,
- la bouteille comprend des parois, dite latérales, séparant lesdits premier et second logements de l'extérieur, et la paroi de séparation est issue de matière de l'une et/ou l'autre desdites parois latérales,  the bottle comprises so-called lateral walls separating said first and second housings from the outside, and the partition wall is made of material from one and / or the other of said side walls,
- ladite paroi de séparation présente une épaisseur comprise entre 0.07 et 0.7 mm, notamment entre 0,2 et 0,5 mm,  said partition wall has a thickness of between 0.07 and 0.7 mm, in particular between 0.2 and 0.5 mm,
- ladite bouteille comprend un premier corps tubulaire définissant ledit premier logement et un second corps définissant ledit second logement, ledit premier corps tubulaire présentant une extrémité ouverte fermée par ledit second corps de sorte que ledit second corps définisse ladite paroi de séparation,  said bottle comprises a first tubular body defining said first housing and a second body defining said second housing, said first tubular body having an open end closed by said second body so that said second body defines said partition wall,
- le second corps présente une forme tubulaire ouverte à l'une de ses extrémités,  the second body has an open tubular shape at one of its ends,
- la bouteille comprend un bouchon de fermeture du second corps, brasé audit second corps,  the bottle comprises a closing cap of the second body, soldered to said second body,
- le second corps présente une première épaisseur au niveau de la paroi de séparation et une épaisseur supérieure au niveau de la paroi latérale de la bouteille,  the second body has a first thickness at the separation wall and a greater thickness at the side wall of the bottle,
- les premier et second corps sont de section sensiblement circulaire et présente un diamètre sensiblement identique,  the first and second bodies are of substantially circular section and have a substantially identical diameter,
- ledit premier corps et/ou ledit second corps sont formés par impact extrusion,  said first body and / or said second body are formed by extrusion impact,
- ladite bouteille comprend un cordon de soudure entre ledit premier corps et ledit second corps.  said bottle comprises a weld bead between said first body and said second body.
L'invention concerne également un échangeur de chaleur, notamment condenseur, comprenant une bouteille telle que décrite plus haut. Dans ledit échangeur, ladite paroi de séparation pourra être crevée, en particulier après avoir soumis l'échangeur à un test d'étanchéité.  The invention also relates to a heat exchanger, in particular a condenser, comprising a bottle as described above. In said exchanger, said partition wall may be punctured, in particular after subjecting the exchanger to a leak test.
La description qui va suivre en regard des dessins annexés, donnés à titre d'exemples non limitatifs, fera bien comprendre en quoi consiste l'invention et comment elle peut être réalisée.  The following description with reference to the accompanying drawings, given as non-limiting examples, will make it clear what the invention consists of and how it can be achieved.
La figure 1 est une vue en perspective éclatée d'une exemple de bouteille conforme à l'invention. La figure 2 est une vue en perspective, selon un plan de coupe diamétrale, de la bouteille de la figure 1 , illustrée de façon assemblée. Figure 1 is an exploded perspective view of an example of a bottle according to the invention. Figure 2 is a perspective view, in a diametral sectional plane, of the bottle of Figure 1, shown in an assembled manner.
La figure 3 est une vue illustrant la paroi de séparation de la bouteille des figures précédentes, une fois crevée.  Figure 3 is a view illustrating the separation wall of the bottle of the preceding figures, once burst.
La figure 4 est une vue schématique illustrant de face un exemple de condenseur conforme à l'invention.  FIG. 4 is a schematic view illustrating from the front an example of a condenser according to the invention.
Comme illustré aux figures 1 et 2, l'invention concerne une bouteille réservoir 1 de fluide réfrigérant, destinée à équiper un échangeur de chaleur d'un circuit de climatisation, notamment un condenseur,  As illustrated in FIGS. 1 and 2, the invention relates to a refrigerant fluid reservoir bottle 1 intended to equip a heat exchanger of an air conditioning circuit, in particular a condenser,
Ladite bouteille 1 définit un premier logement 2 accueillant un dessiccateur, non représenté, et un second logement 3, apte à autoriser une communication de fluide avec ledit circuit de climatisation, notamment par l'intermédiaire de deux orifices 4, 5 d'entrée/sortie. Lesdits logements 2, 3 sont dans le prolongement l'un de l'autre selon l'axe longitudinale de la bouteille.  Said bottle 1 defines a first housing 2 accommodating a desiccator, not shown, and a second housing 3, adapted to allow a fluid communication with said air conditioning circuit, in particular via two orifices 4, 5 inlet / outlet . Said housing 2, 3 are in the extension of one another along the longitudinal axis of the bottle.
Selon l'invention, ladite bouteille 1 est configurée pour que lesdits premier 2 et second 3 logements restent isolés l'un de l'autre jusqu'à un premier seuil de pression interne et soient mis en communication de fluide une fois ledit second logement 3 soumis à un second seuil de pression interne, supérieur au premier seuil.  According to the invention, said bottle 1 is configured so that said first 2 and second housing 2 remain isolated from one another to a first internal pressure threshold and are placed in fluid communication once said second housing 3 subject to a second internal pressure threshold, greater than the first threshold.
Ledit premier seuil de pression interne correspond, par exemple, à une pression supérieure à la pression différentielle susceptible d'être rencontrée entre ledit premier logement 2, prévu soumis à des phénomènes de diffusion du dessiccateur sous l'effet de la chaleur dégagée par une opération de brasage dans laquelle la bouteille est impliquée, et ledit second logement 3, prévu soumis à l'atmosphère de brasage.  Said first internal pressure threshold corresponds, for example, to a pressure greater than the differential pressure likely to be encountered between said first housing 2, provided subjected to diffusion phenomena of the desiccator under the effect of the heat generated by an operation brazing in which the bottle is involved, and said second housing 3, provided subjected to the soldering atmosphere.
Ledit second seuil de pression interne correspond, par exemple, à une pression de test d'étanchéité telle que la pression utilisée pour les tests d'étanchéité à l'hélium pratiqués sur les condenseurs.  Said second internal pressure threshold corresponds, for example, to a leak test pressure such as the pressure used for the helium leak tests performed on the condensers.
Pendant le brasage, le dessiccateur reste ainsi confiné dans le premier logement 2. Après le test d'étanchéité, il est par contre dans le circuit de fluide, ce dernier pouvant passer dudit second logement 3 audit premier logement 2.  During brazing, the dryer remains confined in the first housing 2. After the leak test, it is against in the fluid circuit, the latter can pass from said second housing 3 to said first housing 2.
Ladite bouteille 1 comprend, notamment, des parois 6, 7, dite latérales, séparant lesdits premier 1 et second 2 logements de l'extérieur et une paroi de séparation 8, isolant ledit premier 1 et ledit second 2 logement l'un de l'autre. Ladite paroi de séparation 8 est prévu fusible sous pression, comme cela sera développé en relation avec la figure 3. Said bottle 1 comprises, in particular, walls 6, 7, said side, separating said first 1 and second 2 housing from the outside and a wall 8, isolating said first 1 and said second housing 2 from each other. Said partition wall 8 is provided with a fuse under pressure, as will be developed in connection with FIG.
Ladite paroi de séparation est, par exemple, issue de matière de l'une 6 et/ou l'autre 7 desdites parois latérales. On dispose ainsi d'une bouteille particulièrement simple, sans pièce rapportée pour définir la solution permettant d'isoler le dessiccateur pendant le brasage.  Said partition wall is, for example, derived from material of one 6 and / or the other 7 of said side walls. This provides a particularly simple bottle without insert to define the solution to isolate the dryer during soldering.
Ladite paroi de séparation 8 présente, par exemple, une épaisseur comprise entre 0.07 et 0.7 mm, notamment entre 0,2 et 0,5 mm.  Said partition wall 8 has, for example, a thickness of between 0.07 and 0.7 mm, in particular between 0.2 and 0.5 mm.
A ce sujet, ladite bouteille pourra être métallique, par exemple en aluminium ou alliages d'aluminium.  In this regard, said bottle may be metallic, for example aluminum or aluminum alloys.
Ladite bouteille 1 comprend, notamment, un premier corps tubulaire 9 définissant ledit premier logement 2 et un second corps 10 définissant ledit second logement 3. Ledit premier corps tubulaire 9 présente une extrémité ouverte 1 1 , fermée par ledit second corps 10 de sorte que ledit second corps 10 définisse ladite paroi de séparation 8.  Said bottle 1 comprises, in particular, a first tubular body 9 defining said first housing 2 and a second body 10 defining said second housing 3. Said first tubular body 9 has an open end 1 1, closed by said second body 10 so that said second body 10 defines said partition wall 8.
Le second corps 10 pourra présenter lui aussi une forme tubulaire, ouverte à l'une 12 de ses extrémités. La bouteille 1 pourra d'ailleurs comprendre un bouchon 13 de fermeture du second corps 10, brasé audit second corps 10, au niveau de ladite extrémité ouverte 12 de ce dernier.  The second body 10 may also have a tubular shape, open at one of its ends. The bottle 1 may also comprise a closure cap 13 of the second body 10, soldered to said second body 10 at said open end 12 of the latter.
Ledit second corps 10 présente lesdits orifices d'entrée/sortie 4, 5 pour le fluide. Ils sont ici situés sur sa paroi latérale 7. Un filtre, non représenté, pourra être situé dans ledit second corps 10 entre lesdits orifices 4, 5.  Said second body 10 has said inlet / outlet ports 4, 5 for the fluid. They are here located on its side wall 7. A filter, not shown, may be located in said second body 10 between said orifices 4, 5.
Le second corps 10 pourra présenter au moins deux épaisseurs disctinctes ; une première épaisseur telle que celle évoquée plus haut au niveau de la paroi de séparation 8 et une épaisseur supérieure au niveau de sa paroi latérale 7. Il pourra s'agir d'une épaisseur de 1 à 2 mm, notamment 1 ,5 mm, l'épaisseur de la paroi de séparation 8 étant alors, par exemple, de 0,4 mm.  The second body 10 may have at least two separate thicknesses; a first thickness such as that mentioned above at the partition wall 8 and a greater thickness at its side wall 7. It may be a thickness of 1 to 2 mm, in particular 1.5 mm, the thickness of the partition wall 8 then being, for example, 0.4 mm.
Les premier 9 et second 10 corps sont ici de section sensiblement circulaire et présente un diamètre sensiblement identique. Ils sont formés, par exemple, par impact extrusion. Ils pourront être reliés par un cordon de soudure 14, obtenue par soudure TIG, MIG, laser ou autre procédé de soudure. Comme illustré à la figure 3, ladite paroi de séparation 8, après avoir été soumise à une pression dépassant le second seuil de pression, est crevée. On distingue à cette figure l'arrachement de matière permettant la création d'un orifice de passage 15 dans ladite paroi de séparation 8, permettant la mise en communication du premier logement 2 et du second logement 3. On comprend ainsi qu'avant application dudit second seuil de pression, le premier logement 2 est isolé et protège d'une diffusion provenant du dessiccateur tandis que, après application dudit second seuil de pression ou d'une pression supérieure, ledit premier logement 2 est relié au second logement 3 par la création dudit orifice de passage 15 entre lesdits logements 2, 3. The first 9 and second 10 bodies are of substantially circular section and have a substantially identical diameter. They are formed, for example, by extrusion impact. They may be connected by a weld bead 14, obtained by TIG, MIG, laser welding or other welding process. As shown in Figure 3, said partition wall 8, after being subjected to a pressure exceeding the second pressure threshold, is burst. This figure shows the tearing of material allowing the creation of a passage opening 15 in said partition wall 8, allowing the communication of the first housing 2 and the second housing 3. It is thus understood that before application of said second pressure threshold, the first housing 2 is isolated and protects from diffusion from the desiccator while, after application of said second pressure threshold or a higher pressure, said first housing 2 is connected to the second housing 3 by the creation said passage opening 15 between said housings 2, 3.
Comme illustré à la figure 4, l'invention concerne également un échangeur de chaleur, notamment condenseur, muni d'une bouteille 1 telle que décrite plus haut.  As illustrated in FIG. 4, the invention also relates to a heat exchanger, in particular a condenser, provided with a bottle 1 as described above.
Il comprend un faisceau 30 de tubes 20 de circulation du fluide et d'intercalaires 21 , situés entre les tubes 20. Il comprend en outre des collecteurs 22 dans lesquels les tubes 20 débouchent par leurs extrémités 20a. Les collecteurs 20 sont ici munis de bride 23, 24 d'entrée/sortie.  It comprises a bundle 30 of fluid circulation tubes 20 and spacers 21, located between the tubes 20. It further comprises collectors 22 in which the tubes 20 open at their ends 20a. The collectors 20 are here provided with flange 23, 24 input / output.
La bouteille 1 est située parallèlement à l'un des collecteurs 22. Le condenseur permet une circulation de fluide entre la bouteille 1 et le collecteur 22 voisin, par exemple par l'intermédiaire des orifices d'entrée / sortie 4, 5 de ladite bouteille 1 de sorte que le condenseur présente ici une passe de sous-refroidissement.  The bottle 1 is located parallel to one of the manifolds 22. The condenser allows a flow of fluid between the bottle 1 and the collector 22 neighbor, for example via the inlet / outlet ports 4, 5 of said bottle 1 so that the condenser here has a subcooling pass.
Dans le condenseur pré assemblé avant brasage, la paroi de séparation 8 de la bouteille 1 est étanche. Elle est configurée pour rester étanche pendant le brasage. Elle est en outre configurée pour être crevée après brasage, par exemple sous l'effet d'un test d'étanchéité sous pression dudit condenseur. Elle permet de la sorte la mise en communication des premier et second logements 2, 3 de ladite bouteille 1 .  In the pre-assembled condenser before soldering, the partition wall 8 of the bottle 1 is sealed. It is configured to stay watertight during soldering. It is further configured to be punctured after brazing, for example under the effect of a pressure tightness test of said condenser. In this way, it enables the first and second housings 2, 3 of said bottle 1 to communicate with one another.

Claims

REVENDICATIONS
1 . Bouteille réservoir de fluide réfrigérant, destinée à équiper un échangeur de chaleur d'un circuit de climatisation, ladite bouteille définissant un premier logement (2) accueillant un dessiccateur et un second logement (3), apte à autoriser une communication de fluide avec ledit circuit, ladite bouteille étant configurée pour que lesdits premier (2) et second (3) logements restent isolés l'un de l'autre jusqu'à un premier seuil de pression interne et soient mis en communication de fluide une fois ledit second logement (3) soumis à un second seuil de pression interne, supérieur au premier seuil. 1. Bottle coolant reservoir, intended to equip a heat exchanger of an air conditioning circuit, said bottle defining a first housing (2) accommodating a desiccator and a second housing (3), adapted to allow a fluid communication with said circuit , said bottle being configured so that said first (2) and second (3) housings remain isolated from one another to a first internal pressure threshold and are placed in fluid communication once said second housing (3). ) subject to a second internal pressure threshold greater than the first threshold.
2. Bouteille selon la revendication 1 comprenant une paroi de séparation (8), isolant lesdits premier (2) et second (3) logements l'un de l'autre, ladite paroi de séparation (8) étant prévue fusible sous pression. 2. Bottle according to claim 1 comprising a partition wall (8), isolating said first (2) and second (3) housing from each other, said partition wall (8) being provided fuse under pressure.
3. Bouteille selon la revendication 2 comprenant des parois (6, 7), dite latérales, séparant lesdits premier (2) et second (3) logements de l'extérieur, et dans laquelle ladite paroi de séparation (8) est issue de matière de l'une et/ou l'autre desdites parois latérales (6, 7). 3. Bottle according to claim 2 comprising walls (6, 7), said side, separating said first (2) and second (3) housing from the outside, and wherein said partition wall (8) is material one and / or the other of said side walls (6, 7).
4. Bouteille selon la revendication 3 comprenant un premier corps tubulaire4. Bottle according to claim 3 comprising a first tubular body
(9) définissant ledit premier logement (2) et un second corps (10) définissant ledit second logement (3), ledit premier corps tubulaire (9) présentant une extrémité ouverte (1 1 ) fermée par ledit second corps (10) de sorte que ledit second corps (10) définisse ladite paroi de séparation (8). (9) defining said first housing (2) and a second body (10) defining said second housing (3), said first tubular body (9) having an open end (1 1) closed by said second body (10) so said second body (10) defines said partition wall (8).
5. Bouteille selon la revendication 4 dans lequel le second corps (10) présente une forme tubulaire ouverte à l'une de ses extrémités (12). 5. Bottle according to claim 4 wherein the second body (10) has an open tubular shape at one of its ends (12).
6. Bouteille selon l'une quelconque des revendications 4 ou 5 comprenant un bouchon (13) de fermeture du second corps (10), brasé audit second corps6. Bottle according to any one of claims 4 or 5 comprising a plug (13) for closing the second body (10), soldered to said second body
(10) . (10).
7. Bouteille selon l'une quelconque des revendications 4 à 6 dans lequel le second corps (10) présente une première épaisseur au niveau de la paroi de séparation (8) et une épaisseur supérieure au niveau de la paroi latérale (7) de la bouteille (1 ). 7. Bottle according to any one of claims 4 to 6 wherein the second body (10) has a first thickness at the wall of separation (8) and a greater thickness at the side wall (7) of the bottle (1).
8. Bouteille selon l'une quelconque des revendications 4 à 7 dans laquelle ledit premier corps (9) et/ou ledit second corps (10) sont formés par impact extrusion. 8. Bottle according to any one of claims 4 to 7 wherein said first body (9) and / or said second body (10) are formed by extrusion impact.
9. Bouteille selon l'une quelconque des revendications 4 à 8 comprenant un cordon de soudure (14) entre ledit premier corps (9) et ledit second corps (10). Bottle according to any one of claims 4 to 8 comprising a weld bead (14) between said first body (9) and said second body (10).
10. Bouteille selon l'une quelconque des revendications 2 à 9 dans laquelle ladite paroi de séparation (8) présente une épaisseur comprise entre 0.07 et 0.7 mm, notamment entre 0,2 et 0,5 mm. 10. Bottle according to any one of claims 2 to 9 wherein said partition wall (8) has a thickness between 0.07 and 0.7 mm, in particular between 0.2 and 0.5 mm.
1 1 . Echangeur de chaleur comprenant une bouteille (1 ) selon l'une quelconque des revendications précédentes. 1 1. Heat exchanger comprising a bottle (1) according to any one of the preceding claims.
12. Echangeur selon la revendication 1 1 , prise dans son rattachement à l'une quelconque des revendications 2 à 10, dans lequel ladite paroi de séparation12. Exchanger according to claim 1 1, taken in its connection to any one of claims 2 to 10, wherein said partition wall
(8) est crevée. (8) is dead.
EP12738137.4A 2011-07-25 2012-07-24 Cylinder for storing coolant, and heat exchanger including such a cylinder Active EP2737267B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (2)

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FR1156754A FR2978536B1 (en) 2011-07-25 2011-07-25 BOTTLE REFRIGERANT FLUID TANK AND HEAT EXCHANGER COMPRISING SUCH A BOTTLE
PCT/EP2012/064496 WO2013014152A1 (en) 2011-07-25 2012-07-24 Cylinder for storing coolant, and heat exchanger including such a cylinder

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EP (1) EP2737267B1 (en)
JP (1) JP6100256B2 (en)
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US20140231279A1 (en) 2014-08-21
PL2737267T3 (en) 2016-06-30
FR2978536A1 (en) 2013-02-01
EP2737267B1 (en) 2015-09-09
JP6100256B2 (en) 2017-03-22
US10126006B2 (en) 2018-11-13
JP2014521912A (en) 2014-08-28
CN103827603B (en) 2016-01-20
CN103827603A (en) 2014-05-28
FR2978536B1 (en) 2013-08-23
WO2013014152A1 (en) 2013-01-31

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