EP2221560A1 - Accumulator and climatisation circuit with such accumulator - Google Patents

Accumulator and climatisation circuit with such accumulator Download PDF

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Publication number
EP2221560A1
EP2221560A1 EP10153459A EP10153459A EP2221560A1 EP 2221560 A1 EP2221560 A1 EP 2221560A1 EP 10153459 A EP10153459 A EP 10153459A EP 10153459 A EP10153459 A EP 10153459A EP 2221560 A1 EP2221560 A1 EP 2221560A1
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EP
European Patent Office
Prior art keywords
reservoir
accumulator
pipe
lubricant
accumulator according
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Granted
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EP10153459A
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German (de)
French (fr)
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EP2221560B1 (en
Inventor
Jugurtha Benouali
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Valeo Systemes Thermiques SAS
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Valeo Systemes Thermiques SAS
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Priority to PL10153459T priority Critical patent/PL2221560T3/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006Accumulators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00Problems to be solved
    • F25B2500/01Geometry problems, e.g. for reducing size

Abstract

The accumulator (6) has a conduit (8) arranged in a tank (7), where the conduit is provided with a lubricant recuperation opening (18) at a level of a lower part (15) of the tank to store a lubricant. The lower part of the tank comprises an internal section (S) narrowing towards bottom (12) of the tank. Distance (d) between center of the opening and the bottom of the tank is 1 mm to 12 mm. A trimming insert (20) is arranged in the lower part. A dessicative system (19) is provided in the tank.

Description

L'invention se rapporte aux circuits de climatisation, notamment pour véhicules automobiles. L'invention concerne plus particulièrement un accumulateur et un circuit de climatisation parcouru par un fluide réfrigérant comprenant notamment un compresseur, un évaporateur et un détendeur.The invention relates to air conditioning circuits, particularly for motor vehicles. The invention relates more particularly to an accumulator and an air conditioning circuit traversed by a refrigerant including a compressor, an evaporator and a pressure reducer.

Dans un circuit de climatisation classique, le fluide réfrigérant, tel que le composé désigné « R744 » (ou CO2), « R134a » ou « HFO-1234yf », est présent sous deux phases différentes, à savoir une phase gazeuse et une phase liquide.In a conventional air conditioning circuit, the refrigerant, such as the compound designated "R744" (or CO 2 ), "R134a" or "HFO-1234yf", is present in two different phases, namely a gas phase and a phase liquid.

Le fluide rĂ©frigĂ©rant gazeux est comprimĂ© par un compresseur puis condensĂ© Ă  l'Ă©tat liquide dans un condenseur, puis dĂ©tendu dans un dĂ©tendeur. De lĂ , il gagne un Ă©vaporateur oĂ¹ il se transforme Ă  l'Ă©tat gazeux pour gagner le compresseur, et ainsi de suite. A la sortie de l'Ă©vaporateur, le fluide rĂ©frigĂ©rant gagne un accumulateur avant de regagner l'admission du compresseur.The gaseous refrigerant is compressed by a compressor and then condensed in a liquid state in a condenser and then expanded in a pressure reducer. From there, he gains an evaporator where he turns into a gaseous state to win the compressor, and so on. At the exit of the evaporator, the coolant gains an accumulator before regaining the intake of the compressor.

L'accumulateur, montĂ© entre l'Ă©vaporateur et le compresseur, permet de sĂ©parer les phases liquide et gazeuse du fluide rĂ©frigĂ©rant pour empĂªcher le rĂ©frigĂ©rant liquide d'entrer dans le compresseur tout en permettant au rĂ©frigĂ©rant gazeux de passer.The accumulator, mounted between the evaporator and the compressor, separates the liquid and gaseous phases of the refrigerant fluid to prevent the liquid refrigerant from entering the compressor while allowing the gaseous refrigerant to pass.

Pour cela, l'accumulateur comprend un réservoir pour recevoir un mélange d'un réfrigérant et d'un lubrifiant et une canalisation disposée à l'intérieur du réservoir. En fonctionnement, le mélange de réfrigérant et de lubrifiant est injecté dans le réservoir depuis l'évaporateur. Le réfrigérant gazeux est alors aspiré dans le compresseur, alors que le réfrigérant liquide restant se dépose dans le réservoir.For this, the accumulator comprises a reservoir for receiving a mixture of a coolant and a lubricant and a pipe disposed inside the reservoir. In operation, the mixture of refrigerant and lubricant is injected into the reservoir from the evaporator. The gaseous refrigerant is then sucked into the compressor, while the remaining liquid refrigerant is deposited in the tank.

Le lubrifiant servant à lubrifier le compresseur et d'autres pièces, circule à travers les tuyaux du circuit de climatisation avec le réfrigérant. Du lubrifiant se dépose dans la partie inférieure du réservoir, sous le réfrigérant liquide. De façon connue, la canalisation est munie d'un orifice de récupération de lubrifiant permettant ainsi de récupérer le lubrifiant depuis la partie inférieure du réservoir. Une partie du lubrifiant récupéré dans la canalisation est alors aspirée vers le compresseur en fonction du débit d'écoulement du réfrigérant passant à travers la canalisation.Lubricant used to lubricate the compressor and other parts circulates through the air conditioning system pipes with the refrigerant. Lubricant is deposited in the lower part of the tank under the liquid refrigerant. In known manner, the pipe is provided with a lubricant recovery port thus allowing the lubricant to be recovered from the lower part of the tank. Part of the lubricant recovered in the pipe is then sucked towards the compressor as a function of the refrigerant flow rate passing through the pipe.

Dans le domaine de l'automobile, l'accumulateur doit pouvoir fonctionner dans différentes positions du véhicule, y compris lorsque celui-ci est en pente. Dans ce cas, il est très important d'assurer un niveau de lubrifiant dans le circuit de climatisation permettant d'assurer le bon fonctionnement du compresseur. Toutefois, le volume de lubrifiant stocké dans les composants du circuit de climatisation et plus particulièrement dans l'accumulateur doit rester limité, de sorte que le compresseur reste suffisamment alimenté en lubrifiant.In the automotive field, the battery must be able to operate in different positions of the vehicle, including when it is sloping. In this case, it is very important to ensure a level of lubricant in the air conditioning circuit to ensure the proper operation of the compressor. However, the volume of lubricant stored in the components of the air conditioning circuit and more particularly in the accumulator must remain limited, so that the compressor remains sufficiently supplied with lubricant.

Le but de la présente invention est donc de proposer un accumulateur et un circuit de climatisation permettant un bon fonctionnement des composants du circuit nécessitant une lubrification, y compris en position inclinée et avec le minimum de volume de lubrifiant stocké dans le réservoir.The object of the present invention is therefore to provide an accumulator and an air conditioning circuit for proper operation of the components of the circuit requiring lubrication, including in an inclined position and with the minimum volume of lubricant stored in the reservoir.

A cet effet, l'invention a pour objet un accumulateur pour un circuit de climatisation destinĂ© Ă  Ăªtre parcouru par un fluide rĂ©frigĂ©rant, ledit accumulateur comprenant un rĂ©servoir terminĂ© par un fond et une canalisation agencĂ©e dans le rĂ©servoir, ladite canalisation Ă©tant munie d'un orifice de rĂ©cupĂ©ration de lubrifiant au niveau d'une partie infĂ©rieure du rĂ©servoir destinĂ©e Ă  contenir ledit lubrifiant et terminĂ©e par ledit fond, caractĂ©risĂ© en ce que ladite partie infĂ©rieure du rĂ©servoir prĂ©sente une section interne rĂ©trĂ©cissant jusqu'audit fond.For this purpose, the subject of the invention is an accumulator for an air conditioning circuit intended to be traversed by a refrigerant fluid, said accumulator comprising a tank terminated by a bottom and a duct arranged in the tank, said duct being provided with a lubricant recovery port at a lower portion of the reservoir for containing said lubricant and terminated by said bottom, characterized in that said lower portion of the reservoir has an inner section narrowing to said bottom.

Ainsi agencĂ©, l'orifice de rĂ©cupĂ©ration de lubrifiant reste immergĂ© dans le lubrifiant dans les positions inclinĂ©es de l'accumulateur, de sorte que mĂªme en position inclinĂ©e, l'accumulateur prĂ©sente toujours une capacitĂ© de rĂ©cupĂ©ration du lubrifiant permettant de continuer Ă  assurer un bon fonctionnement du circuit, tout en prĂ©servant un volume modĂ©rĂ© de lubrifiant dans la partie infĂ©rieure de rĂ©servoir.Thus arranged, the lubricant recovery hole remains immersed in the lubricant in the inclined positions of the accumulator, so that even in inclined position, the accumulator always has a lubricant recovery capacity to continue to ensure a good circuit operation, while preserving a moderate amount of lubricant in the lower tank.

Suivant d'autres caractéristiques de l'accumulateur,

  • la distance entre le centre dudit orifice et le fond du rĂ©servoir est comprise entre un et douze millimètres,
  • ladite distance est comprise entre cinq et huit millimètres,
  • une enveloppe pĂ©riphĂ©rique du rĂ©servoir est conformĂ©e pour rĂ©trĂ©cir ladite section interne de ladite partie infĂ©rieure du rĂ©servoir jusqu'audit fond,
  • l'accumulateur comporte un insert de garniture disposĂ© dans la partie infĂ©rieure du rĂ©servoir, dont une surface externe Ă©pouse la forme du rĂ©servoir et dont une surface interne est conformĂ©e pour rĂ©trĂ©cir ladite section interne de ladite partie infĂ©rieure du rĂ©servoir jusqu'audit fond,
  • ladite partie infĂ©rieure du rĂ©servoir prĂ©sente une forme au moins partiellement conique ou tronconique dont le demi-angle au sommet entre un axe vertical et une face latĂ©rale de la section interne, est compris entre 45 et 75 degrĂ©s,
  • le sommet d'une première portion en tronc de cĂ´ne dont le demi-angle au sommet entre un axe vertical et une face latĂ©rale de la section interne est compris entre 45 et 75 degrĂ©s, se prolonge au moins partiellement par une portion tronconique supplĂ©mentaire dont la base correspond au sommet du tronc de cĂ´ne,
  • le sommet d'une première portion en tronc de cĂ´ne dont le demi-angle au sommet entre un axe vertical et une face latĂ©rale de la section interne est compris entre 45 et 75 degrĂ©s, se prolonge par une calotte hĂ©misphĂ©rique,
  • ladite canalisation prĂ©sente un coude au niveau de ladite partie infĂ©rieure du rĂ©servoir, l'orifice de rĂ©cupĂ©ration de lubrifiant Ă©tant mĂ©nagĂ© Ă  l'extrĂ©mitĂ© infĂ©rieure dudit coude, l'entrĂ©e de ladite canalisation dĂ©bouchant dans une partie supĂ©rieure du rĂ©servoir,
  • ladite section interne Ă©pouse au moins partiellement la forme dudit coude de manière Ă  former un moyen de support de ladite canalisation,
  • ladite canalisation traverse ledit fond du rĂ©servoir, l'entrĂ©e de ladite canalisation dĂ©bouchant face Ă  un dĂ©flecteur de l'accumulateur, disposĂ© dans une partie supĂ©rieure du rĂ©servoir.
According to other characteristics of the accumulator,
  • the distance between the center of said orifice and the bottom of the reservoir is between one and twelve millimeters,
  • said distance is between five and eight millimeters,
  • a peripheral shell of the reservoir is shaped to narrow said internal section of said lower portion of the reservoir to said bottom,
  • the accumulator comprises a lining insert disposed in the lower part of the tank, whose outer surface matches the shape of the tank and an inner surface of which is shaped to narrow said internal section of said lower part of the tank to said bottom,
  • said lower part of the reservoir has an at least partially conical or frustoconical shape whose half-angle at the apex between a vertical axis and a lateral face of the internal section is between 45 and 75 degrees,
  • the top of a first truncated cone portion whose half-angle at the apex between a vertical axis and a lateral face of the internal section is between 45 and 75 degrees, is extended at least partly by an additional frustoconical portion of which the base corresponds to the top of the truncated cone,
  • the top of a first truncated cone portion whose half-angle at the apex between a vertical axis and a lateral face of the internal section is between 45 and 75 degrees, is extended by a hemispherical cap,
  • said pipe has a bend at said lower part of the tank, the lubricant recovery orifice being provided at the lower end of said bend, the inlet of said pipe opening into an upper part of the tank,
  • said internal section at least partially matches the shape of said bend so as to form a support means for said pipe,
  • said pipe passes through said bottom of the tank, the inlet of said pipe opening towards a deflector of the accumulator, disposed in an upper part of the tank.

L'invention a aussi pour objet un circuit de climatisation destinĂ© Ă  faire partie d'un vĂ©hicule automobile pour assurer la climatisation de l'habitacle, propre Ă  Ăªtre parcouru par un fluide rĂ©frigĂ©rant, comprenant un compresseur, un condenseur, un dĂ©tendeur et un Ă©vaporateur, caractĂ©risĂ© en ce qu'il comporte un accumulateur tel que dĂ©crit prĂ©cĂ©demment.The invention also relates to an air conditioning circuit intended to be part of a motor vehicle to ensure the air conditioning of the passenger compartment, adapted to be traversed by a refrigerant, comprising a compressor, a condenser, a pressure reducer and an evaporator , characterized in that it comprises an accumulator as described above.

D'autres avantages et caractéristiques apparaîtront à la lecture de la description de l'invention, ainsi que des dessins annexés sur lesquels :

  • la figure 1 reprĂ©sente un premier exemple de circuit de climatisation,
  • la figure 2 reprĂ©sente un deuxième exemple de circuit de climatisation,
  • la figure 3 reprĂ©sente un troisième exemple de circuit de climatisation,
  • la figure 4a reprĂ©sente une vue en coupe d'un accumulateur rĂ©alisĂ© selon un premier mode de rĂ©alisation avec une partie infĂ©rieure rĂ©alisĂ©e selon un premier exemple,
  • la figure 4b reprĂ©sente une vue de l'accumulateur de la figure 4a, inclinĂ© d'un angle de 30° par rapport Ă  un axe vertical,
  • la figure 5a reprĂ©sente une vue en coupe d'un accumulateur rĂ©alisĂ© selon un premier mode de rĂ©alisation avec une partie infĂ©rieure rĂ©alisĂ©e selon un deuxième exemple,
  • la figure 5b reprĂ©sente une vue de l'accumulateur de la figure 5a, inclinĂ© d'un angle de 30° par rapport Ă  un axe vertical,
  • la figure 6a reprĂ©sente une vue en coupe d'un accumulateur rĂ©alisĂ© selon un premier mode de rĂ©alisation avec une partie infĂ©rieure rĂ©alisĂ©e selon un troisième exemple,
  • la figure 6b reprĂ©sente un dĂ©tail de la partie infĂ©rieure de l'accumulateur de la figure 6a,
  • la figure 6c reprĂ©sente une vue de l'accumulateur de la figure 6a, inclinĂ© d'un angle de 30° par rapport Ă  un axe vertical,
  • la figure 7a est une vue en perspective d'une calotte hĂ©misphĂ©rique,
  • la figure 7b est une vue en coupe AA de la calotte hĂ©misphĂ©rique de la figure 7a,
  • la figure 8a reprĂ©sente une vue en coupe d'un accumulateur rĂ©alisĂ© selon un premier mode de rĂ©alisation avec une partie infĂ©rieure rĂ©alisĂ©e selon un autre exemple,
  • la figure 8b reprĂ©sente une vue de l'accumulateur de la figure 8a, inclinĂ© d'un angle de 30° par rapport Ă  un axe vertical,
  • la figure 9a reprĂ©sente une vue en coupe d'un accumulateur rĂ©alisĂ© selon un deuxième mode de rĂ©alisation,
  • la figure 9b reprĂ©sente une vue de l'accumulateur de la figure 9a, inclinĂ© d'un angle de 30° par rapport Ă  un axe vertical et,
  • Les figures 10a, 10b et 10c reprĂ©sentent une vue en coupe de l'accumulateur selon un autre mode de rĂ©alisation.
Other advantages and characteristics will appear on reading the description of the invention, as well as the appended drawings in which:
  • the figure 1 represents a first example of an air conditioning circuit,
  • the figure 2 represents a second example of air conditioning circuit,
  • the figure 3 represents a third example of an air conditioning circuit,
  • the figure 4a represents a sectional view of an accumulator made according to a first embodiment with a lower part made according to a first example,
  • the figure 4b represents a view of the accumulator of the figure 4a , inclined at an angle of 30 ° with respect to a vertical axis,
  • the figure 5a represents a sectional view of an accumulator made according to a first embodiment with a lower part made according to a second example,
  • the figure 5b represents a view of the accumulator of the figure 5a , inclined at an angle of 30 ° with respect to a vertical axis,
  • the figure 6a represents a sectional view of an accumulator made according to a first embodiment with a lower part made according to a third example,
  • the figure 6b represents a detail of the lower part of the accumulator of the figure 6a ,
  • the Figure 6c represents a view of the accumulator of the figure 6a , inclined at an angle of 30 ° with respect to a vertical axis,
  • the figure 7a is a perspective view of a hemispherical cap,
  • the figure 7b is a sectional view AA of the hemispherical cap of the figure 7a ,
  • the figure 8a represents a sectional view of an accumulator made according to a first embodiment with a lower part made according to another example,
  • the figure 8b represents a view of the accumulator of the figure 8a , inclined at an angle of 30 ° with respect to a vertical axis,
  • the figure 9a represents a sectional view of an accumulator produced according to a second embodiment,
  • the figure 9b represents a view of the accumulator of the figure 9a , inclined at an angle of 30 ° to a vertical axis and,
  • The figures 10a , 10b and 10c represent a sectional view of the accumulator according to another embodiment.

Sur ces figures, les Ă©lĂ©ments identiques portent les mĂªmes numĂ©ros de rĂ©fĂ©rence.In these figures, the identical elements bear the same reference numbers.

On se rĂ©fère d'abord Ă  la figure 1 reprĂ©sentant un circuit de climatisation 1 destinĂ© Ă  faire partie d'un vĂ©hicule automobile pour assurer la climatisation de l'habitacle. Le circuit 1 est propre Ă  Ăªtre parcouru par un fluide rĂ©frigĂ©rant, tel que le composĂ© dĂ©signĂ© « R744 » (ou CO2), « R134a » ou « HFO-1234yf ».We first refer to the figure 1 representing an air conditioning circuit 1 intended to be part of a motor vehicle to provide air conditioning of the passenger compartment. The circuit 1 is able to be traversed by a refrigerant, such as the compound designated "R744" (or CO 2 ), "R134a" or "HFO-1234yf".

Le circuit 1 comprend un compresseur 2, Ă  cylindrĂ©e fixe ou variable, propre Ă  comprimer le fluide rĂ©frigĂ©rant en phase gazeuse depuis une basse pression jusqu'Ă  une haute pression. Le fluide rĂ©frigĂ©rant ainsi comprimĂ© et rĂ©chauffĂ© traverse ensuite un condenseur 3 propre Ă  Ăªtre balayĂ© par un flux d'air pour refroidir le fluide rĂ©frigĂ©rant. Ă€ la sortie du condenseur 3, le fluide rĂ©frigĂ©rant est envoyĂ© vers un dĂ©tendeur 4 dans lequel il passe d'une haute pression Ă  une basse pression pour Ăªtre refroidi avant de gagner un Ă©vaporateur 5. Celui-ci est propre Ă  Ăªtre balayĂ© par un flux d'air qui est refroidi par Ă©change thermique avec le fluide rĂ©frigĂ©rant pour produire un flux d'air refroidi, encore appelĂ© air climatisĂ©, Ă  envoyer dans l'habitacle du vĂ©hicule.The circuit 1 comprises a compressor 2, with fixed or variable displacement, capable of compressing the refrigerant in the gas phase from a low pressure up to high pressure. The refrigerant fluid thus compressed and heated then passes through a condenser 3 capable of being swept by a flow of air to cool the refrigerant. At the outlet of the condenser 3, the refrigerant is sent to a pressure reducer 4 in which it passes from a high pressure to a low pressure to be cooled before gaining an evaporator 5. This is suitable for being swept by a flow air that is cooled by heat exchange with the coolant to produce a cooled air flow, also called air conditioning, to be sent into the passenger compartment of the vehicle.

Ă€ la sortie de l'Ă©vaporateur 5, le fluide rĂ©frigĂ©rant passe par un accumulateur 6 avant de regagner le compresseur 2. L'accumulateur 6 comporte un rĂ©servoir 7 et une canalisation 8 agencĂ©e dans le rĂ©servoir 7 pour prĂ©lever par une entrĂ©e 8a, la phase gazeuse du fluide rĂ©frigĂ©rant. La canalisation 8 achemine ensuite le fluide vers l'admission du compresseur 2 par une sortie 8b destinĂ©e Ă  Ăªtre mise en communication avec l'entrĂ©e du compresseur 2 (voir par exemple la figure 4a). L'accumulateur 6 sert notamment de sĂ©parateur gaz/liquide pour maintenir une pression stabilisĂ©e de fluide rĂ©frigĂ©rant.At the outlet of the evaporator 5, the refrigerant passes through an accumulator 6 before returning to the compressor 2. The accumulator 6 comprises a reservoir 7 and a pipe 8 arranged in the reservoir 7 to collect through an inlet 8a, the phase gaseous refrigerant. The pipe 8 then conveys the fluid to the inlet of the compressor 2 through an outlet 8b intended to be placed in communication with the inlet of the compressor 2 (see for example the figure 4a ). The accumulator 6 serves in particular as a gas / liquid separator for maintaining a stabilized refrigerant pressure.

La figure 2 illustre un deuxième exemple de circuit de climatisation 1 comportant un Ă©changeur de chaleur interne 9. Ă€ la sortie du condenseur 3, le fluide rĂ©frigĂ©rant est envoyĂ© vers l'Ă©changeur de chaleur interne 9 et parvient ensuite au dĂ©tendeur 4. De mĂªme, en sortie d'accumulateur 6, le fluide traverse Ă  nouveau l'Ă©changeur de chaleur interne 9 avant de regagner le compresseur 2. Dans l'Ă©changeur de chaleur interne 9, le fluide rĂ©frigĂ©rant circulant dans la partie Ă  haute pression de l'Ă©changeur de chaleur interne 9, Ă©change de la chaleur avec le fluide rĂ©frigĂ©rant refroidi et Ă  basse pression.The figure 2 illustrates a second example of an air conditioning circuit 1 comprising an internal heat exchanger 9. At the outlet of the condenser 3, the refrigerant is sent to the internal heat exchanger 9 and then reaches the expander 4. 6, the fluid passes through the internal heat exchanger 9 before returning to the compressor 2. In the internal heat exchanger 9, the refrigerant circulating in the high pressure portion of the internal heat exchanger 9 , exchanging heat with the coolant cooled and at low pressure.

Dans un troisième exemple illustré en figure 3, le circuit de climatisation 1 comporte un accumulateur 6 présentant un échangeur de chaleur interne 10, agencé par exemple autour de la canalisation et intégré dans le réservoir de l'accumulateur 6, de manière que le fluide réfrigérant surchauffé à haute pression échange de la chaleur avec le fluide réfrigérant refroidi et à basse pression compris dans la canalisation.In a third example illustrated in figure 3 , the air conditioning circuit 1 comprises an accumulator 6 having an internal heat exchanger 10, arranged for example around the pipe and integrated in the tank of the accumulator 6, so that the superheated refrigerant fluid at high pressure exchange of heat with the coolant refrigerant and low pressure included in the pipe.

Mieux visible sur la figure 4a représentant un accumulateur 6 en position verticale, le réservoir 7 de l'accumulateur 6 est délimité par une enveloppe périphérique 11, par exemple cylindrique, se terminant par un fond 12 correspondant à l'extrémité inférieure basse du réservoir 7.Better visible on the figure 4a representing an accumulator 6 in vertical position, the reservoir 7 of the accumulator 6 is delimited by a peripheral envelope 11, for example cylindrical, terminating in a bottom 12 corresponding to the lower lower end of the reservoir 7.

Le réservoir 7 est en outre fermé dans sa partie supérieure 13 par un couvercle (non représenté). On peut prévoir également un bouchon de fermeture 14 au fond 12 de l'accumulateur 6 (voir par exemple, la figure 6b).The reservoir 7 is further closed in its upper part 13 by a lid (not shown). It is also possible to provide a closure plug 14 at the bottom 12 of the accumulator 6 (see, for example, figure 6b ).

La partie inférieure 15 du réservoir 7 est destinée à contenir un lubrifiant 17, tel que de l'huile. Le lubrifiant sert à lubrifier le compresseur 2 et d'autres composants du circuit 1. Un orifice de récupération de lubrifiant 18 est ménagé dans la canalisation 8, au niveau de la partie inférieure 15 du réservoir 7. Le diamètre de l'orifice 18 est par exemple compris entre 0,8 et 1,4 millimètre pour un OCR (rapport de la masse de lubrifiant sur la masse de fluide réfrigérant), pouvant aller de 0,5% à 6%.The lower portion 15 of the reservoir 7 is intended to contain a lubricant 17, such as oil. The lubricant serves to lubricate the compressor 2 and other components of the circuit 1. A lubricant recovery port 18 is provided in the pipe 8, at the lower portion 15 of the reservoir 7. The diameter of the orifice 18 is for example between 0.8 and 1.4 millimeters for an OCR (ratio of the mass of lubricant to the coolant mass), which can range from 0.5% to 6%.

Selon un premier mode de rĂ©alisation visible sur les figures 4a Ă  8b, la canalisation 8 prĂ©sente un coude sensiblement en forme de « J » au niveau de la partie infĂ©rieure 15 du rĂ©servoir 7, l'entrĂ©e 8a de la canalisation 8 dĂ©bouchant dans la partie supĂ©rieure 13 du rĂ©servoir 7, la sortie 8b Ă©tant destinĂ©e Ă  Ăªtre mise en communication avec l'admission du compresseur 2. L'accumulateur 6 permet ainsi de sĂ©parer les phases liquide et gazeuse du fluide rĂ©frigĂ©rant en permettant au rĂ©frigĂ©rant gazeux seul de passer vers le compresseur 2, via l'entrĂ©e 8a.According to a first embodiment visible on the Figures 4a to 8b , the pipe 8 has a substantially "J" -shaped bend at the lower part 15 of the tank 7, the inlet 8a of the pipe 8 opening into the upper part 13 of the tank 7, the outlet 8b being intended to be placed in communication with the intake of the compressor 2. The accumulator 6 thus makes it possible to separate the liquid and gaseous phases of the refrigerant fluid by allowing the gaseous refrigerant alone to pass towards the compressor 2, via the inlet 8a.

L'orifice de récupération de lubrifiant 18 est ménagé au niveau du coude de la canalisation 8, par exemple dans une position centrale à son extrémité inférieure, en regard du fond 12. En fonctionnement, le lubrifiant circule à travers les tuyaux du circuit de climatisation 1 avec le réfrigérant. Une partie du lubrifiant se dépose sur le fond du réservoir 7 avec le réfrigérant, sous forme liquide 16, 17. Une partie du lubrifiant 17 récupéré dans la canalisation 8 est aspirée vers le compresseur 2 en fonction du débit d'écoulement du réfrigérant passant à travers la canalisation 8.The lubricant recovery orifice 18 is formed at the bend of the pipe 8, for example in a central position at its lower end, opposite the bottom 12. In operation, the lubricant flows through the pipes of the air conditioning circuit. 1 with the refrigerant. Part of the lubricant is deposited on the bottom of the tank 7 with the refrigerant, in liquid form 16, 17. Part of the lubricant 17 recovered in the pipe 8 is sucked towards the compressor 2 as a function of the flow rate of the refrigerant passing through the pipe 8.

On prĂ©voit par exemple un filtre au niveau de l'orifice 18 pour empĂªcher que des particules polluantes puissent venir colmater l'orifice 18 (non reprĂ©sentĂ©). L'accumulateur 6 peut Ă©galement comporter un système dessicatif 19 dans le rĂ©servoir 9, afin de protĂ©ger de l'humiditĂ© les diffĂ©rents composants du circuit de climatisation 1. Ce système dessicatif 19 comporte par exemple un sac ou une cartouche de sel dessicatif.For example, a filter is provided at the orifice 18 to prevent polluting particles from clogging the orifice 18 (not shown). The accumulator 6 may also include a desiccant system 19 in the reservoir 9, in order to protect the various components of the air conditioning circuit 1 from moisture. This desiccant system 19 comprises, for example, a bag or a desiccant salt cartridge.

La distance d entre le centre de l'orifice 18 et le fond 12 du réservoir 7 est comprise entre un et douze millimètres. Par exemple, la distance d est comprise entre cinq et huit millimètres.The distance d between the center of the orifice 18 and the bottom 12 of the reservoir 7 is between one and twelve millimeters. For example, the distance d is between five and eight millimeters.

En outre, la section interne S de la partie infĂ©rieure 15 du rĂ©servoir 7 rĂ©trĂ©cit jusqu'au fond d 12. On prĂ©voit par exemple que l'enveloppe pĂ©riphĂ©rique 11 du rĂ©servoir 7 est conformĂ©e pour rĂ©trĂ©cir la section interne S de la partie infĂ©rieure 15 jusqu'au fond 12 du rĂ©servoir 7. La forme de la partie infĂ©rieure 15 de l'enveloppe pĂ©riphĂ©rique 11 du rĂ©servoir 7 est alors conçue de manière que la section interne S rĂ©trĂ©cisse jusqu'au fond 12, par exemple par moulage ou par thermoformage (figures 10a Ă  10c). Alternativement, l'accumulateur 6 comporte un insert de garniture 20 disposĂ© dans la partie infĂ©rieure 15 du rĂ©servoir 7, conformĂ© pour rĂ©trĂ©cir la section interne S de la partie infĂ©rieure 15 jusqu'au fond 12. L'insert de garniture 20 peut Ăªtre rĂ©alisĂ© en plastique ou en mĂ©tal.In addition, the inner section S of the lower part 15 of the reservoir 7 shrinks to the bottom d 12. For example, it is provided that the peripheral envelope 11 of the reservoir 7 is shaped to narrow the internal section S of the lower part 15 until at the bottom 12 of the reservoir 7. The shape of the lower part 15 of the peripheral envelope 11 of the reservoir 7 is then designed so that the internal section S narrows to the bottom 12, for example by molding or by thermoforming ( Figures 10a to 10c ). Alternatively, the accumulator 6 comprises a lining insert 20 disposed in the lower part 15 of the reservoir 7, shaped to narrow the internal section S of the lower portion 15 to the bottom 12. The lining insert 20 can be made of plastic or metal.

Selon un premier exemple illustrĂ© par les figures 4a et 4b, la partie infĂ©rieure 15 du rĂ©servoir 7 prĂ©sente une forme au moins partiellement conique ou tronconique (renversĂ©) dont le demi-angle β au sommet, entre un axe vertical Y et une face latĂ©rale de la section interne conique, est compris entre 45 et 75 degrĂ©s, par exemple de l'ordre de 60°. La section interne S du cĂ´ne passant par un plan parallèle Ă  la base est alors dĂ©finie par un cercle se rĂ©trĂ©cissant jusqu'au fond 12 du rĂ©servoir 7. La partie infĂ©rieure 15 du rĂ©servoir prĂ©sente ainsi une forme sensiblement en entonnoir. L'angle α, complĂ©mentaire du demi-angle β, entre une face latĂ©rale de la section interne S 15 du rĂ©servoir 7 et un plan horizontal, est ainsi compris entre 15 et 45° (de l'ordre de 30° dans l'exemple considĂ©rĂ©).According to a first example illustrated by Figures 4a and 4b , the lower part 15 of the reservoir 7 has a shape at least partially conical or frustoconical (inverted), the half-angle β at the top, between a vertical axis Y and a side face of the conical internal section, is between 45 and 75 degrees, for example of the order of 60 °. The inner section S of the cone passing through a plane parallel to the base is then defined by a circle narrowing to the bottom 12 of the reservoir 7. The lower portion 15 of the reservoir thus has a substantially funnel-shaped shape. The angle α, complementary to the half-angle β, between a lateral face of the internal section S 15 of the reservoir 7 and a horizontal plane, is thus between 15 and 45 ° (of the order of 30 ° in the example).

On prévoit une forme en tronc de cône par exemple pour disposer un bouchon dans le fond 12 en forme de disque. Le fond 12 peut présenter un diamètre compris entre 10 et 40 millimètres.A truncated cone shape is provided, for example, to provide a plug in the disk-shaped bottom 12. The bottom 12 may have a diameter of between 10 and 40 millimeters.

Ainsi agencé, on constate qu'en position inclinée d'un angle θ avec l'axe vertical Y, pouvant aller jusqu'30° (figure 4b), l'orifice 18 reste immergé dans le lubrifiant 17, avec un volume minimum de lubrifiant 17 stocké dans la partie inférieure 15 du réservoir 7, de l'ordre de 3 cm3, et avec une très bonne efficacité de séparation, de l'ordre de 0,95.Thus arranged, it is found that in inclined position of an angle θ with the vertical axis Y, up to 30 ° ( figure 4b ), the orifice 18 remains immersed in the lubricant 17, with a minimum volume of lubricant 17 stored in the lower part 15 of the reservoir 7, of the order of 3 cm 3 , and with a very good separation efficiency, order of 0.95.

Selon un deuxième exemple représenté sur les figures 5a et 5b, le sommet d'une première portion en tronc de cône se prolonge au moins partiellement par une portion tronconique supplémentaire dont la base D2 correspond au sommet de la première portion tronconique. La base D2 peut présenter une dimension comprise entre 20 et 60 millimètres.According to a second example shown on the figures 5a and 5b , the top of a first truncated cone portion is extended at least partially by an additional frustoconical portion whose base D2 corresponds to the top of the first frustoconical portion. The base D2 may have a size of between 20 and 60 millimeters.

Le demi-angle au sommet β de la première portion en tronc de cĂ´ne, entre un axe vertical Y et une face latĂ©rale de la section interne S tronconique, est compris entre 45 et 75 degrĂ©s, et le fond 12 comporte par exemple un diamètre D1 compris entre 10 et 40 millimètres. L'angle α, complĂ©mentaire du demi-angle β, entre une face latĂ©rale de la section interne S du rĂ©servoir 7 et un plan horizontal, est ainsi compris entre 15 et 45° (de l'ordre de 30° dans l'exemple considĂ©rĂ©).The half-angle at the vertex β of the first truncated cone portion, between a vertical axis Y and a lateral face of the frustoconical internal section S, is between 45 and 75 degrees, and the bottom 12 comprises, for example, a diameter D1 between 10 and 40 millimeters. The angle α complementary to the half-angle β between a lateral face of the internal section S of the reservoir 7 and a horizontal plane is thus between 15 and 45 ° (of the order of 30 ° in the example under consideration. ).

En position inclinée d'un angle θ avec l'axe vertical Y, allant jusqu'35° (30° sur la figure 5b) l'orifice 18 reste immergé dans le lubrifiant 17, avec un volume de lubrifiant 17 encore réduit par rapport au premier exemple.In inclined position of an angle θ with the vertical axis Y, up to 35 ° (30 ° on the figure 5b ) the orifice 18 remains immersed in the lubricant 17, with a volume of lubricant 17 further reduced compared to the first example.

On peut ainsi envisager d'autres formes de la partie inférieure 15 du réservoir 7, conformées pour réduire la section interne S, par exemple avec plus de deux portions tronconique consécutives, de manière à réduire au maximum de volume de lubrifiant.It is thus possible to envisage other forms of the lower part 15 of the reservoir 7, shaped to reduce the internal section S , for example with more than two consecutive frustoconical portions, so as to reduce the volume of lubricant to the maximum.

Les figures 6a, 6b et 6c représentent une variante dans laquelle l'accumulateur 6 comporte un insert de garniture 20 disposé dans la partie inférieure 15 du réservoir 7, dont une surface externe 20a épouse la forme du réservoir 7 et dont une surface interne 20b est conformée pour rétrécir la section interne S de la partie inférieure 15 jusqu'au fond 12.The Figures 6a, 6b and 6c represent a variant in which the accumulator 6 comprises a lining insert 20 disposed in the lower portion 15 of the tank 7, an outer surface 20a of which is in the shape of the tank 7 and whose inner surface 20b is shaped to narrow the internal section S from the bottom 15 to the bottom 12.

Par exemple, le sommet d'une première portion en tronc de cĂ´ne dont le demi-angle au sommet β, entre un axe vertical Y et une face latĂ©rale de la section interne S tronconique, est compris entre 45 et 75 degrĂ©s, se prolonge au moins partiellement par une portion sphĂ©rique Ă©pousant la forme du coude de la canalisation 8, se prolongeant elle-mĂªme par une portion tronconique supplĂ©mentaire. La portion sphĂ©rique permet de rĂ©trĂ©cir la section interne S en Ă©pousant partiellement la forme du coude de manière Ă  former un moyen de support de la canalisation 8.For example, the top of a first truncated cone portion whose half-angle at the vertex β between a vertical axis Y and a lateral face of the frustoconical internal section S is between 45 and 75 degrees, extends to less partially by a spherical portion conforming to the shape of the bend of the pipe 8, extending itself by an additional frustoconical portion. The spherical portion makes it possible to narrow the internal section S by partially matching the shape of the elbow so as to form a support means for the pipe 8.

En position inclinée d'un angle θ avec l'axe vertical Y, jusqu'35° (30° sur la figure 6c) l'orifice 18 reste immergé dans le lubrifiant 17, avec un volume de lubrifiant 17 réduit.In inclined position of an angle θ with the vertical axis Y, up to 35 ° (30 ° on the Figure 6c ) the orifice 18 remains immersed in the lubricant 17, with a reduced volume of lubricant 17.

On distingue également sur ces figures, un exemple de réalisation du filtre 21 au niveau de l'orifice 18. Le filtre 21 est fixé par deux bagues 22a, 22b disposées de part et d'autre de l'orifice 18 au niveau du coude de la canalisation 8.In these figures, an embodiment of the filter 21 is also visible at the orifice 18. The filter 21 is fixed by two rings 22a, 22b disposed on either side of the orifice 18 at the elbow. Line 8.

Les figures 7a et 7b représentent un autre exemple de réalisation d'un insert de garniture 20, dont une surface externe 20a épouse la forme d'un réservoir 7 et dont une surface interne 20b est conformée pour rétrécir la section interne S de la partie inférieure 15 jusqu'au fond 12 du réservoir 7. Le sommet d'une première portion en tronc de cône se prolonge par une portion sphérique formant un moyen de support de la canalisation 8, se prolongeant par une portion tronconique supplémentaire.The Figures 7a and 7b represent another embodiment of a lining insert 20, whose outer surface 20a takes the form of a reservoir 7 and an inner surface 20b is shaped to narrow the inner section S of the lower portion 15 to the bottom 12 of the reservoir 7. The top of a first portion truncated cone is extended by a spherical portion forming a support means of the pipe 8, extending by an additional frustoconical portion.

Selon un autre exemple illustrĂ© par les figures 8a et 8b, la partie infĂ©rieure 15 du rĂ©servoir 7 prĂ©sente une première portion en forme au moins partiellement tronconique (renversĂ©) dont le demi-angle au sommet β, entre un axe vertical Y et une face latĂ©rale de la section interne S tronconique, est compris entre 45 et 75 degrĂ©s. Le sommet D3 de cette première portion se prolonge par une portion concave, telle qu'une calotte hĂ©misphĂ©rique. Par exemple, le sommet D3 prĂ©sente une dimension comprise entre 30 et 60 millimètres.According to another example illustrated by figures 8a and 8b , the lower part 15 of the reservoir 7 has a first portion in at least partially frustoconical (inverted) shape, the half-angle at the top β, between a vertical axis Y and a lateral face of the frustoconical internal section S is between 45 and 75 degrees. The top D3 of this first portion is extended by a concave portion, such as a hemispherical cap. For example, the vertex D3 has a size of between 30 and 60 millimeters.

En position inclinée d'un angle θ avec l'axe vertical Y, jusqu'35° (30° sur la figure 8b) l'orifice 18 reste immergé dans le lubrifiant 17, avec un volume de lubrifiant 17 minimum.In inclined position of an angle θ with the vertical axis Y, up to 35 ° (30 ° on the figure 8b ) the orifice 18 remains immersed in the lubricant 17, with a minimum volume of lubricant 17.

Selon un deuxième mode de réalisation illustré par les figures 9a et 9b, la canalisation 8 est droite et traverse le fond 12 du réservoir 7, l'entrée 8a de la canalisation 8 débouchant face à un déflecteur 23 de l'accumulateur 6, disposé dans une partie supérieure 13 du réservoir 7.According to a second embodiment illustrated by the Figures 9a and 9b , the pipe 8 is straight and passes through the bottom 12 of the tank 7, the inlet 8a of the pipe 8 opening towards a deflector 23 of the accumulator 6, disposed in an upper part 13 of the tank 7.

L'orifice de récupération de lubrifiant 18 est ménagé à la distance d du fond 12 sur une paroi latérale de la canalisation 8. Comme précédemment, la distance d entre le centre de l'orifice 18 et le fond 12 du réservoir 7, est comprise entre un et douze millimètres, par exemple, entre cinq et huit millimètres. En outre, la section interne S de la partie inférieure 15 du réservoir 7 rétrécit jusqu'au fond 12.The lubricant recovery orifice 18 is provided at the distance d from the bottom 12 on a side wall of the pipe 8. As previously, the distance d between the center of the orifice 18 and the bottom 12 of the reservoir 7 is comprised between one and twelve millimeters, for example, between five and eight millimeters. In addition, the inner section S of the lower portion 15 of the reservoir 7 shrinks to the bottom 12.

Lors du fonctionnement, le mélange de fluide réfrigérant et de lubrifiant est injecté dans le réservoir 7 depuis l'évaporateur 5 et vient frapper la partie supérieure du déflecteur 23. La partie gazeuse du fluide est aspirée dans le compresseur 2 via l'entrée 8a de la canalisation 8, alors que le fluide réfrigérant liquide restant se dépose dans la partie inférieure 15 du réservoir 7 avec le lubrifiant.During operation, the mixture of coolant and lubricant is injected into the tank 7 from the evaporator 5 and strikes the upper part of the deflector 23. The gaseous part of the fluid is sucked into the compressor 2 via the inlet 8a of the the pipe 8, while the remaining liquid coolant is deposited in the lower portion 15 of the reservoir 7 with the lubricant.

Dans l'exemple illustrĂ© par les figures 9a et 9b, la partie infĂ©rieure 15 du rĂ©servoir 7 prĂ©sente une forme au moins partiellement tronconique dont le demi-angle au sommet β, entre un axe vertical Y et la section interne S conique est compris entre 45 et 75 degrĂ©s, par exemple de l'ordre de 60°.In the example illustrated by the Figures 9a and 9b , the lower part 15 of the reservoir 7 has an at least partially frustoconical shape whose half-angle at the vertex β, between a vertical axis Y and the internal conical section S is between 45 and 75 degrees, for example of the order of 60 °.

On constate qu'avec ce deuxième mode de réalisation, en position inclinée d'un angle θ avec l'axe vertical Y, pouvant aller jusqu'35°, l'orifice 18 reste immergé dans le lubrifiant 17, avec un minimum de lubrifiant 17 stocké dans la partie inférieure 15 du réservoir 7.

  1. 1. Bien qu'un seul exemple ait été représenté, la partie inférieure 15 peut également présenter une forme différente permettant de réduire la section interne S, telle qu'une première portion en tronc de cône se prolongeant au moins partiellement par une portion tronconique supplémentaire dont la base correspond au sommet du tronc de cône.
It can be seen that with this second embodiment, in an inclined position of an angle θ with the vertical axis Y, which can go up to 35 °, the orifice 18 remains immersed in the lubricant 17, with a minimum of lubricant 17 stored in the lower part 15 of the reservoir 7.
  1. 1. Although only one example has been shown, the lower part 15 may also have a different shape to reduce the internal section S , such that a first truncated cone portion extending at least partially by an additional frustoconical portion whose base corresponds to the top of the truncated cone.

Claims (12)

Accumulateur pour un circuit de climatisation (1) destinĂ© Ă  Ăªtre parcouru par un fluide rĂ©frigĂ©rant, ledit accumulateur comprenant un rĂ©servoir (7) terminĂ© par un fond (12) et une canalisation (8) agencĂ©e dans le rĂ©servoir (7), ladite canalisation (8) Ă©tant munie d'un orifice de rĂ©cupĂ©ration de lubrifiant (18) au niveau d'une partie infĂ©rieure (15) du rĂ©servoir (7) destinĂ©e Ă  contenir ledit lubrifiant et terminĂ©e par ledit fond (12), caractĂ©risĂ© en ce que ladite partie infĂ©rieure (15) du rĂ©servoir (7) prĂ©sente une section interne (S) rĂ©trĂ©cissant jusqu'audit fond (12).Accumulator for an air conditioning circuit (1) intended to be traversed by a refrigerant, said accumulator comprising a reservoir (7) terminated by a bottom (12) and a pipe (8) arranged in the reservoir (7), said pipe ( 8) being provided with a lubricant recovery port (18) at a lower portion (15) of the reservoir (7) for containing said lubricant and terminated by said bottom (12), characterized in that said portion bottom (15) of the reservoir (7) has an inner section (S) narrowing to said bottom (12). Accumulateur selon la revendication 1, caractĂ©risĂ© en ce que la distance (d) entre le centre dudit orifice (18) et le fond (12) du rĂ©servoir (7) est comprise entre un et douze millimètres.Accumulator according to claim 1, characterized in that the distance (d) between the center of said orifice (18) and the bottom (12) of the reservoir (7) is between one and twelve millimeters. Accumulateur selon la revendication 1, caractĂ©risĂ© en ce que ladite distance (d) est comprise entre cinq et huit millimètres.Accumulator according to claim 1, characterized in that said distance ( d ) is between five and eight millimeters. Accumulateur selon l'une quelconque des revendications prĂ©cĂ©dentes, caractĂ©risĂ© en ce qu'une enveloppe pĂ©riphĂ©rique (11) du rĂ©servoir (7) est conformĂ©e pour rĂ©trĂ©cir ladite section interne (S) de ladite partie infĂ©rieure (15) du rĂ©servoir (7) jusqu'audit fond (12).Accumulator according to any one of the preceding claims, characterized in that a peripheral shell (11) of the reservoir (7) is shaped to narrow said internal section ( S ) of said lower part (15) of the reservoir (7) to audit background (12). Accumulateur selon l'une quelconque des revendications 1 Ă  3, caractĂ©risĂ© en ce qu'il comporte un insert de garniture (20) disposĂ© dans la partie infĂ©rieure (15) du rĂ©servoir (7), dont une surface externe (20b) Ă©pouse la forme du rĂ©servoir (7) et dont une surface interne (20a) est conformĂ©e pour rĂ©trĂ©cir ladite section interne (S) de ladite partie infĂ©rieure (15) du rĂ©servoir (7) jusqu'audit fond (12).Accumulator according to any one of claims 1 to 3, characterized in that it comprises a lining insert (20) disposed in the lower part (15) of the reservoir (7), whose outer surface (20b) conforms to the shape reservoir (7) and an inner surface (20a) of which is shaped to narrow said inner section ( S ) of said lower portion (15) of the reservoir (7) to said bottom (12). Accumulateur selon l'une quelconque des revendications prĂ©cĂ©dentes, caractĂ©risĂ© en ce que ladite partie infĂ©rieure (15) du rĂ©servoir (7) prĂ©sente une forme au moins partiellement conique ou tronconique dont le demi-angle (β) au sommet entre un axe vertical (Y) et une face latĂ©rale de la section interne (S) est compris entre 45 et 75 degrĂ©s.Accumulator according to any one of the preceding claims, characterized in that said lower part (15) of the reservoir (7) has an at least partially conical or frustoconical shape whose half-angle (β) at the vertex between a vertical axis (Y ) and a side face of the inner section (S) is between 45 and 75 degrees. Accumulateur selon la revendication 6, caractĂ©risĂ© en ce que le sommet d'une première portion en tronc de cĂ´ne dont le demi-angle (β) au sommet entre un axe vertical (Y) et une face latĂ©rale de la section interne (S) est compris entre 45 et 75 degrĂ©s, se prolonge au moins partiellement par une portion tronconique supplĂ©mentaire dont la base (D2) correspond au sommet du tronc de cĂ´ne.Accumulator according to Claim 6, characterized in that the vertex of a first truncated cone portion whose half-angle (β) at the vertex between a vertical axis (Y) and a lateral face of the internal section (S) is between 45 and 75 degrees, is extended at least partially by an additional frustoconical portion whose base ( D2 ) corresponds to the top of the truncated cone. Accumulateur selon la revendication 6, caractĂ©risĂ© en ce que le sommet d'une première portion en tronc de cĂ´ne dont le demi-angle au sommet (β) entre un axe vertical (Y) et une face latĂ©rale de la section interne (S) est compris entre 45 et 75 degrĂ©s, se prolonge par une calotte hĂ©misphĂ©rique.Accumulator according to claim 6, characterized in that the vertex of a first truncated cone portion whose half-angle at the apex (β) between a vertical axis (Y) and a lateral face of the internal section (S) is between 45 and 75 degrees, is extended by a hemispherical cap. Accumulateur selon l'une quelconque des revendications prĂ©cĂ©dentes, caractĂ©risĂ© en ce que ladite canalisation (8) prĂ©sente un coude au niveau de ladite partie infĂ©rieure (15) du rĂ©servoir (7), l'orifice de rĂ©cupĂ©ration de lubrifiant (18) Ă©tant mĂ©nagĂ© Ă  l'extrĂ©mitĂ© infĂ©rieure dudit coude, l'entrĂ©e (8a) de ladite canalisation (8) dĂ©bouchant dans une partie supĂ©rieure (13) du rĂ©servoir (7).Accumulator according to any one of the preceding claims, characterized in that the said pipe (8) has a bend at the level of the said lower part (15) of the reservoir (7), the lubricant recovery orifice (18) being arranged at the lower end of said elbow, the inlet (8a) of said pipe (8) opening into an upper portion (13) of the reservoir (7). Accumulateur selon la revendication 9, caractĂ©risĂ© en ce que ladite section (S) interne Ă©pouse au moins partiellement la forme dudit coude de manière Ă  former un moyen de support de ladite canalisation (8).Accumulator according to claim 9, characterized in that said internal section ( S ) at least partially conforms to the shape of said bend so as to form a support means for said pipe (8). Accumulateur selon l'une quelconque des revendications 1 Ă  8, caractĂ©risĂ© en ce que ladite canalisation (8) traverse ledit fond (12) du rĂ©servoir (7), l'entrĂ©e (8a) de ladite canalisation (8) dĂ©bouchant face Ă  un dĂ©flecteur (23) de l'accumulateur, disposĂ© dans une partie supĂ©rieure(13) du rĂ©servoir (7).Accumulator according to any one of claims 1 to 8, characterized in that said duct (8) passes through said bottom (12) of the tank (7), the inlet (8a) of said duct (8) opening in front of a deflector (23) of the accumulator, disposed in an upper portion (13) of the reservoir (7). Circuit de climatisation destinĂ© Ă  faire partie d'un vĂ©hicule automobile pour assurer la climatisation de l'habitacle, propre Ă  Ăªtre parcouru par un fluide rĂ©frigĂ©rant, comprenant un compresseur (2), un condenseur (3), un dĂ©tendeur (4) et un Ă©vaporateur (5), caractĂ©risĂ© en ce qu'il comporte un accumulateur (6) selon l'une quelconque des revendications prĂ©cĂ©dentes.Air conditioning circuit intended to be part of a motor vehicle to ensure the air conditioning of the passenger compartment, suitable for being traversed by a refrigerant fluid, comprising a compressor (2), a condenser (3), a pressure reducer (4) and a evaporator (5), characterized in that it comprises an accumulator (6) according to any one of the preceding claims.
EP10153459.2A 2009-02-18 2010-02-12 Accumulator and climatisation circuit with such accumulator Active EP2221560B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10153459T PL2221560T3 (en) 2009-02-18 2010-02-12 Accumulator and climatisation circuit with such accumulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0900737A FR2942306B1 (en) 2009-02-18 2009-02-18 ACCUMULATOR AND AIR CONDITIONING CIRCUIT

Publications (2)

Publication Number Publication Date
EP2221560A1 true EP2221560A1 (en) 2010-08-25
EP2221560B1 EP2221560B1 (en) 2015-08-19

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ID=41119994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10153459.2A Active EP2221560B1 (en) 2009-02-18 2010-02-12 Accumulator and climatisation circuit with such accumulator

Country Status (4)

Country Link
EP (1) EP2221560B1 (en)
FR (1) FR2942306B1 (en)
HU (1) HUE027708T2 (en)
PL (1) PL2221560T3 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182136A (en) * 1977-12-22 1980-01-08 Tecumseh Products Company Suction accumulator
WO2002042697A1 (en) * 2000-11-24 2002-05-30 Daimlerchrysler Ag Collector for the liquid phase of a working medium of an air conditioning system
GB2386939A (en) * 2000-12-29 2003-10-01 Visteon Global Tech Inc Accumulator with an internal heat exchanger
JP2008241088A (en) * 2007-03-27 2008-10-09 Calsonic Kansei Corp Accumulator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182136A (en) * 1977-12-22 1980-01-08 Tecumseh Products Company Suction accumulator
WO2002042697A1 (en) * 2000-11-24 2002-05-30 Daimlerchrysler Ag Collector for the liquid phase of a working medium of an air conditioning system
GB2386939A (en) * 2000-12-29 2003-10-01 Visteon Global Tech Inc Accumulator with an internal heat exchanger
JP2008241088A (en) * 2007-03-27 2008-10-09 Calsonic Kansei Corp Accumulator

Also Published As

Publication number Publication date
FR2942306B1 (en) 2012-07-13
PL2221560T3 (en) 2016-04-29
HUE027708T2 (en) 2016-10-28
EP2221560B1 (en) 2015-08-19
FR2942306A1 (en) 2010-08-20

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