EP1293736A1 - Système de refroidissement pour la climatisation d'un véhicule et dispositif de refroidissement pour un tel système de refroidissement - Google Patents

Système de refroidissement pour la climatisation d'un véhicule et dispositif de refroidissement pour un tel système de refroidissement Download PDF

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Publication number
EP1293736A1
EP1293736A1 EP02018044A EP02018044A EP1293736A1 EP 1293736 A1 EP1293736 A1 EP 1293736A1 EP 02018044 A EP02018044 A EP 02018044A EP 02018044 A EP02018044 A EP 02018044A EP 1293736 A1 EP1293736 A1 EP 1293736A1
Authority
EP
European Patent Office
Prior art keywords
oil
cooling device
refrigeration system
cooling
ölabscheideeinheit
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
EP02018044A
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German (de)
English (en)
Other versions
EP1293736B1 (fr
Inventor
Hans-Joachim Dipl.-Ing. Krauss
Roland Dipl.-Phys. Burk
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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Publication date
Application filed by Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1293736A1 publication Critical patent/EP1293736A1/fr
Application granted granted Critical
Publication of EP1293736B1 publication Critical patent/EP1293736B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • F25B31/004—Lubrication oil recirculating arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers

Definitions

  • the invention relates to a refrigeration system, in particular refrigeration cycle system for the air conditioning of a vehicle, with a cooling device by means of a to be cooled and oil (refrigeration oil) containing gas medium enforceable is, and with a ⁇ labscheideisme, according to the preamble of the claim 1. Furthermore, the invention relates to a cooling device for use in Such a refrigeration system according to the preamble of claim 14.
  • Refrigeration systems and cooling devices of the type mentioned are known.
  • refrigeration oil Proportion of oil (refrigeration oil) in a same prevailing refrigerant (Gas medium) need.
  • compressors Because of cost reasons, such compressors have no own oil sump or oil separator to the Keep refrigeration oil away from other refrigeration cycle components, circulate relatively high refrigeration oil content with the refrigerant through all components of the refrigeration cycle with correspondingly negative effects on the achievable Cooling capacity or on the cooling capacity.
  • an oil separator in a hot gas line between a compressor and a condenser of a refrigeration cycle system integrate.
  • Such external oil separators are relatively large and expensive and usually have a relatively high basic charge with refrigeration oil for controlling the flow of cold oil by means of a float valve.
  • These oil separators to a relatively high degree of separation designed by over 95%.
  • the one with the refrigerant circulating refrigerant oil fraction is relatively large and leads to different performance and efficiency-reducing effects.
  • the refrigeration system is characterized the oil separation unit is integrated in the cooling device. there it may at the cooling device (heat-dissipating component) to a condenser or a gas cooler, for example in circuits with supercritical heat dissipation, act.
  • the oil separation unit is preferably integrated on the hot gas medium side in the cooling device and provides a technically relatively easy to implement solution because no additional screw connections or the like is needed such as when integrating an oil separator would be necessary in an extended hot gas line. advantageously, requires the integrated in the cooler oil separation practically no additional space.
  • the oil separation unit is enforceable by means of the gas medium Wire and / or metal plate structure formed.
  • the ⁇ labscheidetician For example, as a pack of a knitted wire, a Wire mesh, a wire mesh or as a stack of expanded metal plates be educated.
  • Such ⁇ labscheidetician is in proportion easily integrated in the cooling device and is used for oil separation by a hot gas medium flows through (interspersed).
  • suitable design options the ⁇ labscheidetician conceivable.
  • the oil separation unit preferably contains a surface-enlarging, geometric macrostructuring. This is under macro structuring one of the enforcement structure (eg, wire knit) of the oil separation unit superimposed geometric structuring of in relation to the Enforcement direction of the gas medium front and / or back Surface (interface) of the ⁇ labscheideech understood.
  • the oil separation unit may be formed as a longitudinally pleated pack be, by means of which an improved separation effect of the refrigeration oil from the oil separating unit passing through the gas medium and an optimized Refrigeration oil drain from the oil separation unit can be achieved.
  • it is also a curved configuration of the front and / or rear side (entrance or exit surface) of the ⁇ labscheidetician to achieve the mentioned effects possible.
  • the oil separation unit contains at the with respect to the direction of enforcement of the gas medium downstream boundary surface at least one substantially perpendicular downwardly extending oil drain edge, which is a U-shaped or V-shaped in cross-section Profile.
  • a basically desirable refrigeration oil drain favors or supports the oil separation unit and tearing cold oil drops into the oil separation unit Gas medium flow prevented.
  • the ⁇ labscheideech is enforceable in a gas medium Integrated collection tube of the cooling device, with a cooling device connected to an evaporator suction line of the refrigeration system connected is.
  • a manifold is a manifold or about an inlet-side section of a distributor tube the cooling device in which relatively simpler and more effective Way the oil separation unit is integrated.
  • the oil separation unit in the form of a wire and / or metal plate structure during the manufacturing process the cooling device and in particular before a soldering process for Prepare the same in the manifold in a low-assembly manner or use.
  • a first, with respect to the direction of enforcement of the gas medium upstream chamber and a second, downstream chamber formed.
  • the upstream chamber is used for the pre-distribution of the hot Gas medium-refrigerant oil mixture on the entire face of the oil separation unit, while the downstream chamber is undergoing further homogenization the self-adjusting velocity distribution of the now largely refrigerant oil-free gas medium via the associated cooling lines (for example Capacitor lines) of the cooling device is used, so that a largely the same large gas medium mass flow (refrigerant mass flow) in all cooling pipes (condenser pipes) connected to the manifold is achievable.
  • Capacitor lines for example Capacitor lines
  • the ⁇ labscheideech is frontally preferably spaced from the respective Inlet opening of gas medium cooling lines arranged. hereby This avoids that in the example, as a wire and / or metal plate structure trained oil separation unit deposited and along selbiger down-going refrigerant oil due to capillary action can get into the cooling lines.
  • the manifold in the first chamber in a lower Area an oil drain opening.
  • the collecting pipe in lower area a boundary wall, pointing to the oil drain opening Edge is located lower than her to the gas medium cooling lines directed edge.
  • the oil drain opening is preferably mounted lower than the lowest, with the manifold related cooling line, wherein the edge of the boundary wall pointing to the oil drain opening deeper for this purpose is arranged as her directed to the gas medium cooling lines edge.
  • the boundary wall can be as a flat, obliquely arranged sheet or be formed as graded form sheet.
  • the boundary wall a partition wall integrated within the cooling device which, in the case of a shaped sheet, preferably as a deep-drawn part or is designed as a flow molding.
  • the oil drain opening with a particular capillary tube trained oil return line connected is the oil return line in terms of pressure loss (diameter, length) designed so that at normal pressure differences between high pressure and Low-pressure side of the deposited by means of ⁇ labscheideech cooling oil mass flow completely from the manifold (manifold) of the cooling device (Capacitor) can be dissipated, but in the presence of a Gas medium at the oil discharge opening of the gas medium mass flow (hot gas mass flow) due to the lower density of the gas medium and due to the relatively small cross section of the oil drain opening or the oil return line remains negligibly small.
  • a pressure reduction takes place to a present Saugdruckieri in the particular short throttle tube ("Orifice") immediately in front of a junction in a suction line.
  • the oil return line can thus with a slightly larger Be executed diameter.
  • this variant allows a more effective Cooling the refrigeration oil during its return through the oil return line, because a temperature-lowering relaxation process only in one End region (seen in oil return direction) of the oil return line takes place and thus a larger temperature difference between each to be returned refrigerant oil in the oil return line and the ambient temperature can be used.
  • cooling device for use in a corresponding refrigeration system, with the features of claim 14.
  • the cooling device according to the invention is characterized in that the ⁇ labscheideiki is integrated in the cooling device.
  • FIG 1 shows a block diagram of a generally designated 10 Refrigeration system, in particular a refrigeration cycle system, for example for Air conditioning of a vehicle.
  • the refrigeration system 10 includes a cooling device 12, with an evaporator 14 to form a closed Circulatory is operatively connected. From the evaporator 14 leads as an arrow 22 shown refrigerant line to an expansion valve 16, of which a refrigerant line shown as arrow 24 to a connection point 26 leads.
  • the refrigerant is in particular a Gas medium and in the present embodiment to hot gas.
  • an oil return line shown as arrow 28 separated oil (refrigeration oil) from the cooling device 12 in the of Evaporator 14 incoming refrigerant supplied to form a refrigerant-oil mixture, that according to arrow 30 through a corresponding feed line a compressor 18 is supplied. From the compressor 18 leads a as arrow 32 shown feed line to the cooling device 12 for acting the same with the now under higher pressure refrigerant-oil mixture.
  • an integrated oil separator unit 46- finds an oil separation described in detail later the refrigerant-oil mixture instead, the separated oil, as already mentioned, by the oil return line shown as arrow 28 of the cooling device 12 is conducted to the connection point 26.
  • the refrigerant will passed through the cooling device 12 and through a refrigerant return line (Arrow 34) directed to a collector or dryer 20, from which a refrigerant return line shown as arrow 36 to the expansion valve 16 leads.
  • the expansion valve 16 is finally by means of a Arrow 38 shown return line connected to the evaporator 14.
  • the lines 22, 24, 28, 30 are suction lines while the lines 32, 34, 36, 38 are pressure lines.
  • FIG. 2 shows a schematic representation of a possible embodiment a cooling device 12, which in the refrigeration system 10 of Figure 1 can be used.
  • FIG. 3 shows a detail of the cooling device 12 of FIG. 2 in FIG shown enlarged scale.
  • the cooling device 12 of Figures 2 and 3 is connected to the supply line 32 for supplying the refrigerant-oil mixture connected according to arrow 40 in the cooling device 12.
  • the cooling device 12 a manifold 48, which through a lower boundary wall 62 (partition wall) is limited.
  • the ⁇ labscheideech 46 arranged such that a first, with respect to the feed direction (Arrow 40) of the refrigerant-oil mixture upstream chamber 50 and a second, downstream chamber 52 is formed.
  • the oil separation unit 46 is formed for example as a wire and / or metal plate structure and by the refrigerant (gas medium) enforceable.
  • the oil separation unit 46 frontally spaced to a plurality of inlet openings 54 of refrigerant cooling lines 56 (gas medium cooling lines) arranged.
  • refrigerant cooling lines 56 gas medium cooling lines
  • the oil drain opening 60 is with a particular as Capillary tube formed oil return line 28 for oil return according to Arrow 44 connected.
  • the guided by the cooling device 12 refrigerant (Gas medium) is through the refrigerant return line 34 according to arrow 42nd returned to the evaporator 14 (see also Figure 1).
  • Cooling device 12 is the boundary wall 62 as a flat, obliquely arranged Sheet metal formed.
  • the pointing to the oil drain opening 60 Edge 64 of the boundary wall 62 arranged lower than her to the refrigerant cooling lines 56 directed edge 66.
  • Figure 4 shows an alternative embodiment with respect to the geometric Configuration of the boundary wall 62.
  • the boundary wall 62 is formed as a stepped shaped sheet, in which case the edge 64 pointing to the oil drain opening 60 is also arranged lower is as the directed to the cooling lines 56 edge 66th
  • the ⁇ labscheidetician 46 of Figures 2 to 4 is as a wire and / or metal plate structure formed and has a substantially flat front structure (adjacent to the first chamber 50) and a corresponding formed structural back (adjacent to the second chamber 52) on.
  • the oil separation unit 46 may also have a surface-enlarging, geometric Have macrostructuring. The macrostructuring proceeds the ⁇ labscheidetician 46 in a plan view of Figure 5 zig-zag (longitudinally pleated structure), while in Figure 6 a with respect to the Refrigerant supply (arrow 40) concavely curved configuration of Oil separation unit 46 is shown in a plan view thereof.
  • Oil drainage edge 58 becomes a reliable and effective oil separation from the refrigerant-oil mixture allows.
  • the in the oil separation unit 46 separated oil is through the oil return line 28 from the manifold 48 passed and the connection point 26 (see also Figure 1) supplied under formation of a closed oil circuit.
  • the oil separation unit 46 requires, apart from one relatively thin and preferably flexible and therefore relatively easy to install oil return line 28, no additional Space. In this case, takes place in the oil return line 28, an automatic cooling the recirculating oil (refrigeration oil) instead.
  • an automatic cooling the recirculating oil refrigeration oil
  • the oil separator unit 46 separatation package made of aluminum remains the purity of the Cooling device 12 (capacitor or capacitor module) maintained.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Sorption Type Refrigeration Machines (AREA)
EP02018044A 2001-09-13 2002-08-13 Système de refroidissement pour la climatisation d'un véhicule et dispositif de refroidissement pour un tel système de refroidissement Expired - Lifetime EP1293736B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10145028 2001-09-13
DE10145028A DE10145028A1 (de) 2001-09-13 2001-09-13 Kältesystem, insbesondere Kältekreislaufsystem zur Klimatisierung eines Fahrzeugs, und Kühleinrichtung zum Einsatz in einem derartigen Kältesystem

Publications (2)

Publication Number Publication Date
EP1293736A1 true EP1293736A1 (fr) 2003-03-19
EP1293736B1 EP1293736B1 (fr) 2008-10-08

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EP02018044A Expired - Lifetime EP1293736B1 (fr) 2001-09-13 2002-08-13 Système de refroidissement pour la climatisation d'un véhicule et dispositif de refroidissement pour un tel système de refroidissement

Country Status (3)

Country Link
EP (1) EP1293736B1 (fr)
AT (1) ATE410650T1 (fr)
DE (2) DE10145028A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11867440B2 (en) 2018-06-02 2024-01-09 Carrier Corporation Water-cooled heat exchanger

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007028856A1 (de) * 2007-06-22 2008-12-24 Bayerische Motoren Werke Aktiengesellschaft Fahrzeug mit einer Klimaanlage
CN101818972B (zh) * 2010-03-25 2011-10-26 清华大学 热管制冷复合空调专用蒸发器
DE102020106626B4 (de) 2020-03-11 2023-09-28 Audi Aktiengesellschaft Kältemittelkreislauf für ein Kraftfahrzeug und Verfahren zum Betreiben eines solchen Kältemittelkreislaufs

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1425246A (en) * 1919-07-30 1922-08-08 American Sanitary Refrigeratio Separator
US3201949A (en) * 1963-08-22 1965-08-24 Vilter Manufacturing Corp Refrigerating apparatus with oil separator means
US3822567A (en) * 1972-02-21 1974-07-09 Maekawa Seisakusho Kk Refrigerating apparatus
JPH06185834A (ja) * 1992-12-14 1994-07-08 Daikin Ind Ltd 油分離器
JPH0861812A (ja) * 1994-08-18 1996-03-08 Matsushita Electric Ind Co Ltd 空気調和装置のオイルセパレータ
US5704215A (en) * 1996-06-28 1998-01-06 Carrier Corporation Internal oil separator for a refrigeration system condenser
US6276165B1 (en) * 1999-04-23 2001-08-21 Mitsubishi Heavy Industries, Ltd. Air condenser, coolant system, and on vehicle air conditioning system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408826A (en) * 1967-01-27 1968-11-05 Dunham Bush Inc Refrigeration system and systems for cooling and controlling compressors
DE3705850A1 (de) * 1987-02-24 1988-09-01 Sueddeutsche Kuehler Behr Verfahren und vorrichtung zur leistungssteigerung einer kaelteanlage fuer kraftfahrzeuge
JPH10196540A (ja) * 1997-01-10 1998-07-31 Toyota Autom Loom Works Ltd 圧縮機
DE19956816A1 (de) * 1999-11-25 2001-06-07 Bosch Gmbh Robert Kältemittelkreislauf
DE10001470A1 (de) * 2000-01-15 2001-07-19 Max Karsch Verfahren zum Betreiben einer Klimatisierungseinrichtung für Fahrzeuge und Ausführung des erforderlichen Abscheidesammlers

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1425246A (en) * 1919-07-30 1922-08-08 American Sanitary Refrigeratio Separator
US3201949A (en) * 1963-08-22 1965-08-24 Vilter Manufacturing Corp Refrigerating apparatus with oil separator means
US3822567A (en) * 1972-02-21 1974-07-09 Maekawa Seisakusho Kk Refrigerating apparatus
JPH06185834A (ja) * 1992-12-14 1994-07-08 Daikin Ind Ltd 油分離器
JPH0861812A (ja) * 1994-08-18 1996-03-08 Matsushita Electric Ind Co Ltd 空気調和装置のオイルセパレータ
US5704215A (en) * 1996-06-28 1998-01-06 Carrier Corporation Internal oil separator for a refrigeration system condenser
US6276165B1 (en) * 1999-04-23 2001-08-21 Mitsubishi Heavy Industries, Ltd. Air condenser, coolant system, and on vehicle air conditioning system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 538 (M - 1686) 13 October 1994 (1994-10-13) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 07 31 July 1996 (1996-07-31) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11867440B2 (en) 2018-06-02 2024-01-09 Carrier Corporation Water-cooled heat exchanger

Also Published As

Publication number Publication date
DE10145028A1 (de) 2003-04-03
EP1293736B1 (fr) 2008-10-08
DE50212859D1 (de) 2008-11-20
ATE410650T1 (de) 2008-10-15

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