EP1853859B1 - Accumulateur de réfrigérant doté d'une unité filtre/dessiccateur - Google Patents

Accumulateur de réfrigérant doté d'une unité filtre/dessiccateur Download PDF

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Publication number
EP1853859B1
EP1853859B1 EP06723160A EP06723160A EP1853859B1 EP 1853859 B1 EP1853859 B1 EP 1853859B1 EP 06723160 A EP06723160 A EP 06723160A EP 06723160 A EP06723160 A EP 06723160A EP 1853859 B1 EP1853859 B1 EP 1853859B1
Authority
EP
European Patent Office
Prior art keywords
filter
dryer unit
accordance
coolant collector
interior space
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.)
Not-in-force
Application number
EP06723160A
Other languages
German (de)
English (en)
Other versions
EP1853859A2 (fr
Inventor
Peter Klug
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.)
Eaton Fluid Power GmbH
Original Assignee
Eaton Fluid Power GmbH
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
Application filed by Eaton Fluid Power GmbH filed Critical Eaton Fluid Power GmbH
Publication of EP1853859A2 publication Critical patent/EP1853859A2/fr
Application granted granted Critical
Publication of EP1853859B1 publication Critical patent/EP1853859B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006—Accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size
    • 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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide

Definitions

  • the invention relates to a refrigerant collector with filter / dryer unit for refrigeration systems.
  • the refrigerant collector according to the invention is particularly suitable for motor vehicle air conditioning systems and in particular for those which are operated with carbon dioxide as the refrigerant.
  • a refrigerant collector is known with a pressure-resistant upright vessel whose wall comprises a bottom and an upper end and includes an interior.
  • a tube having an arranged in the interior end.
  • the pipe end opens into the interior and can thus supply it with a fluid.
  • Another pipe leading through the upper end into the interior space carries at its lower end a filter / dryer unit located above the floor.
  • one of the tubes near the bottom may have a U-shaped curvature to which a small aperture provided with a filter is attached. Through this opening fluid can penetrate into the U-tube, for example, to introduce oil into the tube.
  • the compressors of CO 2 refrigeration machines but also the compressors of other refrigerators are relatively sensitive to sucked fluid drops and in particular solid particles. It is therefore desirable to ensure that the refrigerant flow sucked in by the compressors contains in particular no solid particles.
  • the refrigerant collector according to the invention is based on a pressure-resistant, upright vessel with wall, bottom and .oberem conclusion, so that a closed interior is enclosed.
  • a first tube leads into the interior and a second tube leads out of the interior.
  • a filter / dryer unit is arranged; fed by the tube leading into the interior becomes.
  • the filter / dryer unit is supplied approximately in its center with refrigerant.
  • the filter / dryer unit has at least one, but preferably a plurality of large-area outlets, whose cross section exceeds the cross section of the feeding pipe. The outlets open into the interior of the container, in which thus both oil and liquid refrigerant can collect.
  • the tube leading out of the interior space has an upper open end, which is preferably arranged above the filter / dryer unit. It leads from this point out of the interior. In this case, it is preferably guided in a U-shape around the filter / dryer unit, wherein a lower pipe bend of the pipe leading out of the interior runs directly above the bottom of the vessel. In this area, a suction opening is preferably arranged. The pipe bend undercuts an oil level, which forms in the vessel. As a result, the refrigerant flow leaving the vessel can be metered in via the intake opening and carried along with it. This is desired for lubrication of the connected compressors.
  • the filter / dryer unit separates the refrigerant level from the upwardly towering open tube end of the tube leading out of the inner space, so that no splashes of refrigerant can get into the open tube end, even if the refrigerant collector when installed in a motor vehicle shaken during heavy driving maneuvers or bumpy roads.
  • the upper end of the vessel is preferably formed flat or slightly rounded, the two tubes side by side into the vessel and lead out of this.
  • an approximately cylindrical vapor dome is formed, in which refrigerant is predominantly in the gaseous phase and can be withdrawn well.
  • the connection of the two side by side preferably parallel to each other oriented tubes is also simple and clear.
  • the filter / dryer unit occupies the entire cross-section of the interior in such a way that it defines only a relatively narrow annular gap with the wall of the vessel. Out of this annular gap, refrigerant with a relatively low flow rate enters the upper area serving as vapor dome. Sloshing movements of the refrigerant level located below the filter / dryer unit hardly lead to liquid refrigerant reaching the area above the filter / dryer unit. This is certainly not the case in view of the preferred height (axial extent) of the filter / dryer unit, which is preferably larger than the diameter thereof.
  • the filter / dryer unit preferably has a housing with a flat top and an approximately cylindrical outer periphery. This effectively separates the liquid refrigerant phase from the vapor refrigerant phase. In addition, it offers a sufficiently large interior to accommodate a large desiccant portion.
  • the tip of the bottom is preferably located centrally in the housing approximately below the feeding tube.
  • the cone angle is relatively large and is preferably between 120 ° and 170 °.
  • This shape of the bottom has proved to be advantageous both in terms of the forming flow pattern as well as purely practical because it allows a good compaction of the dryer granules when closing the filter / dryer unit. This is especially true when the bottom is inserted into the housing of the filter / dryer unit from below and then, for example, through Locking means is fixed.
  • the dry granules are flowed through substantially radially, wherein the flow rate is low and decreases towards the outside. This allows intimate contact between dry granulate and refrigerant fluid.
  • the low flow rate in the housing of the filter / dryer unit results in a low pressure drop across the refrigerant collector.
  • Spherical granules are preferably used as dry granules, which provides optimum contact between the refrigerant and the dry granules.
  • the filter / dryer unit On the inlet side, the filter / dryer unit is provided with an inlet basket having at its periphery and at its bottom outlet openings, e.g. Has holes and slots.
  • the inlet basket allows the introduction of refrigerant fluid into the dry granulate with low pressure drop.
  • a fine filter is preferably arranged. This is e.g. formed by a fine stainless steel mesh, a stainless steel felt or the like.
  • the mesh size is preferably in the range of 30 microns to 60 microns.
  • the conical bottom is a prerequisite that leads to a good separation of gaseous and liquid phase.
  • the accumulation of liquid refrigerant and / or oil in the filter / dryer unit is safely avoided.
  • the dryer granules themselves are kept free of liquids, so that its effectiveness is not affected by oil or liquid refrigerant.
  • the outlet windows occupy almost the entire outer circumference of the housing of the filter / dryer unit. This further leads to an efficient use of the desiccant through slow flow as well as safe discharge of liquid refrigerant and oil from the housing of the filter / dryer unit.
  • the outer periphery 14 is provided with radially outwardly projecting Abstandshalternasen 15, which are preferably in the form of elongated vertical, ie axially oriented ribs 16, 17, 18 are formed.
  • On the outer periphery 14 are also outlet windows 19, 20, 21, 22, 23 (see FIG. 2 and 3 ) formed from the FIG. 3 apparent interior 24 of the housing 11 open on its entire peripheral surface to the interior 9 of the vessel 3 out.
  • the outlet windows 19 to 23 are separated from each other only by narrow webs, which connect the upper end plate located on the upper side 13 with a lower ring 25 which holds a bottom 26 inserted into the housing 11.
  • the outlet windows 19 to 23 may be provided with a plastic grid, which supports the filter used later explained and protects against manual damage, in particular during assembly.
  • the bottom 26 is preferably, like the rest of the housing 11, made of plastic. It has an upwardly extending from an annular rim 27 conical bottom portion 28 which has a cone angle of preferably about 130 ° to 150 °.
  • the bottom 26 is preferably connected to the ring 25 via latching means not further illustrated. Its outer edge 29 terminates with the upper edge of the ring 25 or is located just above it.
  • the vessel 2 is arranged vertically, i. its tubes 7, 8 lead substantially vertically into the interior 9.
  • the central axis of the cylindrical wall is oriented vertically.
  • refrigerant from a refrigerator first flows into the filter / dryer unit dividing the inner space 9 into an upper area 38 serving as a steam dome and a lower area 39 serving as a liquid collector.
  • the refrigerant is usually a three-phase mixture consisting of gaseous refrigerant, liquid refrigerant and liquid oil particles. It first enters the inlet basket 31 and leaves it through the slots 32 and the openings 33 through which it enters the dense packing of the preferably spherical dryer body.
  • Liquid ingredients i. Liquid refrigerant and oil reach the bottom portion 28 and run on this outward. They exit the filter / dryer unit 10 through the outlet windows 19 to 23 and then run down the ring 25 in the subspace formed by the area 39. Gaseous refrigerant collects, however, predominantly in the region 38 of the interior 9, from which they are withdrawn via the pipe 8.
  • a refrigerant receiver 1 with filter / dryer unit 10 has an elongate, vertically oriented interior, which is subdivided by the filter / dryer unit 10 into an upper area 38 and a lower area 39.
  • Inflowing refrigerant is through a pipe 7 of the Filter / dryer unit 10 which has its outlet window at its outer periphery, which defines a relatively narrow gap with the wall 3 of the vessel 2 of the refrigerant collector 1.
  • Liquid components drip down and collect below the filter / dryer unit. Gaseous components accumulate predominantly above the filter / dryer unit 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Drying Of Solid Materials (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Drying Of Gases (AREA)

Claims (19)

  1. Accumulateur de réfrigérant (1) doté
    d'un réservoir vertical (2) résistant à la pression qui présente une paroi (3), un fond (5) et une fermeture supérieure (6) qui entourent un espace interne (9),
    d'un tuyau (7) allant dans l'espace interne (9) qui présente une extrémité (12) disposée dans l'espace interne (9),
    d'une unité filtre/dessiccateur (10) qui est raccordée à l'extrémité (12) du tuyau (7) allant dans l'espace interne (9) qui se trouve dans l'espace interne (9), et disposée à distance au-dessus du fond (5),
    d'un tuyau (8) sortant de l'espace interne (9) qui présente une extrémité ouverte disposée dans l'espace interne (9) au-dessus de l'unité filtre/dessiccateur (10), caractérisé en ce que
    l'unité filtre/dessiccateur (10) présente des fenêtres de sortie (19, 20, 21, 22, 23) à sa périphérie externe.
  2. Accumulateur de réfrigérant selon la revendication 1, caractérisé en ce que le tuyau (8) sortant de l'espace interne (9) s'étend de son extrémité ouverte vers un coude de tuyau (35) disposé sur le fond (5) et de là sort du réservoir (2) par ascendance, au moins une ouverture d'aspiration (37) étant disposée dans le coude de tuyau (35).
  3. Accumulateur de réfrigérant selon la revendication 1, caractérisé en ce que la paroi (3) du réservoir (2) est réalisée de manière cylindrique.
  4. Accumulateur de réfrigérant selon la revendication 1, caractérisé en ce que le fond (5) du réservoir (2) est réalisé de manière arrondie.
  5. Accumulateur de réfrigérant selon la revendication 1, caractérisé en ce que la fermeture supérieure (4) du réservoir (2) est réalisée de manière plate et les deux tuyaux (7, 8) côte à côte conduisent dans le réservoir (2) ou hors de celui-ci.
  6. Accumulateur de réfrigérant selon la revendication 1, caractérisé en ce que l'unité filtre/dessiccateur (10) prend l'ensemble de la section transversale de l'espace interne (9) et définit une fente annulaire avec la paroi.
  7. Accumulateur de réfrigérant selon la revendication 1, caractérisé en ce que le tuyau (8) sortant de l'espace interne (9) est guidé entre la paroi (3) et l'unité filtre/dessiccateur (10) aussi bien par descendance que par ascendance.
  8. Accumulateur de réfrigérant selon la revendication 1, caractérisé en ce que l'unité filtre/dessiccateur (10) présente un logement (11) avec un côté supérieur plat (13) et une périphérie externe (14) approximativement cylindrique de laquelle des nez écarteurs (15) s'étendent vers la paroi afin de s'appuyer sur celle-ci.
  9. Accumulateur de réfrigérant selon la revendication 1, caractérisé en ce que l'unité filtre/dessiccateur (10) présente un fond conique (26).
  10. Accumulateur de réfrigérant selon la revendication 1, caractérisé en ce que l'unité filtre/dessiccateur (10) présente un raccord central au niveau de son côté supérieur (13) qui est relié au tuyau (7) allant dans l'espace interne (9).
  11. Accumulateur de réfrigérant selon la revendication 10, caractérisé en ce que l'unité filtre/dessiccateur (10) entoure un espace de réception (24) dans lequel une cage d'admission (31) suivant directement le raccord central et présentant des ouvertures d'admission (32, 33) est disposée.
  12. Accumulateur de réfrigérant selon la revendication 11, caractérisé en ce que les ouvertures d'admission dans l'unité filtre/dessiccateur (10) sont réalisées en tant qu'orifices (33) ou fentes (32) dont la largeur ne dépasse pas la taille de grain d'un granulat dessiccateur.
  13. Accumulateur de réfrigérant selon la revendication 1, caractérisé en ce que les fenêtres de sortie (19, 20, 21, 22, 23) dans l'unité filtre/dessiccateur (10) prennent presque l'ensemble de la périphérie externe de l'unité filtre/dessiccateur (10).
  14. Accumulateur de réfrigérant selon la revendication 1, caractérisé en ce que les fenêtres de sortie (19, 20, 21, 22, 23) de l'unité filtre/dessiccateur (10) sont pourvues d'un filtre (30).
  15. Accumulateur de réfrigérant selon la revendication 1, caractérisé en ce que le filtre (30) de l'unité filtre/dessiccateur (10) est formé par un filet en acier inoxydable à fines mailles.
  16. Accumulateur de réfrigérant selon la revendication 1, caractérisé en ce que l'unité filtre/dessiccateur (10) présente un logement (11) réalisé en plastique.
  17. Accumulateur de réfrigérant selon la revendication 16, caractérisé en ce que l'unité filtre/dessiccateur (10) présente un fond qui est enclenché avec le reste du logement (11).
  18. Accumulateur de réfrigérant selon la revendication 1, caractérisé en ce que l'unité filtre/dessiccateur (10) est disposée approximativement à mi-hauteur de l'espace interne (9) ou à un niveau supérieur.
  19. Accumulateur de réfrigérant selon la revendication 2, caractérisé en ce que l'ouverture d'aspiration (37) est disposée sur le côté inférieur du coude de tuyau (35), tourné vers le fond (5).
EP06723160A 2005-03-01 2006-03-01 Accumulateur de réfrigérant doté d'une unité filtre/dessiccateur Not-in-force EP1853859B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005009191A DE102005009191B3 (de) 2005-03-01 2005-03-01 Kältemittelsammler mit Filter/Trockner-Einheit
PCT/EP2006/001862 WO2006092285A2 (fr) 2005-03-01 2006-03-01 Accumulateur de réfrigérant doté d'une unité filtre/dessiccateur

Publications (2)

Publication Number Publication Date
EP1853859A2 EP1853859A2 (fr) 2007-11-14
EP1853859B1 true EP1853859B1 (fr) 2009-07-22

Family

ID=36613382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06723160A Not-in-force EP1853859B1 (fr) 2005-03-01 2006-03-01 Accumulateur de réfrigérant doté d'une unité filtre/dessiccateur

Country Status (7)

Country Link
US (1) US20080282727A1 (fr)
EP (1) EP1853859B1 (fr)
CN (1) CN100538215C (fr)
AT (1) ATE437345T1 (fr)
DE (2) DE102005009191B3 (fr)
ES (1) ES2329169T3 (fr)
WO (1) WO2006092285A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008037904B4 (de) 2007-08-15 2019-07-04 Mahle International Gmbh Akkumulator
DE102013217072A1 (de) * 2013-08-27 2015-03-05 Behr Gmbh & Co. Kg Kondensator
CN105774479B (zh) * 2016-02-26 2017-12-15 佛山市国荥先达车用空调及冷却部件有限公司 车用空调干燥储液器
US10627141B2 (en) * 2018-03-25 2020-04-21 Shawket Bin Ayub Smart accumulator to scrub inlet fluid

Family Cites Families (20)

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US2325657A (en) * 1940-05-13 1943-08-03 Neal B Burkness Combined filter, dehydrator, and indicator
US2749723A (en) * 1953-10-15 1956-06-12 Robert C Webber Oil separator for refrigeration system
US3064819A (en) * 1959-01-19 1962-11-20 Henry Valve Co Refrigerant drier
US3972816A (en) * 1974-08-23 1976-08-03 Change, Inc. Oil extractor
US4352739A (en) * 1980-01-21 1982-10-05 Oliver Jr John E Completion and workover fluid filtration system
US4276756A (en) * 1980-07-07 1981-07-07 General Motors Corporation Liquid accumulator
US4457843A (en) * 1982-05-12 1984-07-03 Multiform Desiccants, Inc. Self-retaining adsorbent container
JPH0648283Y2 (ja) * 1989-03-13 1994-12-12 カルソニック株式会社 リキッドタンク
US5282370A (en) * 1992-05-07 1994-02-01 Fayette Tubular Technology Corporation Air-conditioning system accumulator and method of making same
US5651266A (en) * 1996-04-04 1997-07-29 Eaton Corporation Drier/accumulator for refrigerant system and method of making same
US5729998A (en) * 1996-10-16 1998-03-24 Ford Motor Company Accumulator for an air conditioning system
DE19742230C2 (de) * 1997-09-25 1999-08-05 Hansa Metallwerke Ag Akkumulator für eine nach dem "Orifice"-Prinzip arbeitende Klimaanlage, insbesondere Fahrzeugklimaanlage
US6196019B1 (en) * 1997-12-16 2001-03-06 Showa Aluminum Corporation Accumulator
DE19946217C1 (de) * 1999-09-27 2001-04-26 Hansa Metallwerke Ag Akkumulator für eine nach dem "Orifice"-Prinzip arbeitende Klimaanlage, insbesondere Fahrzeugklimaanlage
CA2329498C (fr) * 2000-01-10 2009-02-24 Brasscorp Limited Methode d'application de colorants fluorescents liquides aux parties interieures de systemes de climatisation ou de refrigeration
DE20004328U1 (de) * 2000-03-08 2000-05-18 Hansa Metallwerke Ag Akkumulator für eine nach dem Orifice-Prinzip arbeitende Klimaanlage, insbesondere Fahrzeugklimaanlage
US6330810B1 (en) * 2000-08-11 2001-12-18 Showa Denko K.K. Condensing apparatus for use in a refrigeration cycle receiver-dryer used for said condensing apparatus
US6430958B1 (en) * 2001-01-22 2002-08-13 Halla Climate Control Canada, Inc. Suction accumulator for air conditioning systems
WO2003081148A1 (fr) * 2002-03-23 2003-10-02 Behr Gmbh & Co. Condenseur
DE10221968A1 (de) * 2002-05-17 2003-11-27 Modine Mfg Co Aufnahmevorrichtung für Trocknungsmittel

Also Published As

Publication number Publication date
CN101166942A (zh) 2008-04-23
WO2006092285A2 (fr) 2006-09-08
DE502006004303D1 (de) 2009-09-03
CN100538215C (zh) 2009-09-09
ATE437345T1 (de) 2009-08-15
US20080282727A1 (en) 2008-11-20
WO2006092285A3 (fr) 2007-09-07
EP1853859A2 (fr) 2007-11-14
DE102005009191B3 (de) 2006-09-07
ES2329169T3 (es) 2009-11-23

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