EP1845320A2 - Accumulateur avec échangeur de chaleur interne, en particulier pour une installation de climatisation de véhicule - Google Patents

Accumulateur avec échangeur de chaleur interne, en particulier pour une installation de climatisation de véhicule Download PDF

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Publication number
EP1845320A2
EP1845320A2 EP07006460A EP07006460A EP1845320A2 EP 1845320 A2 EP1845320 A2 EP 1845320A2 EP 07006460 A EP07006460 A EP 07006460A EP 07006460 A EP07006460 A EP 07006460A EP 1845320 A2 EP1845320 A2 EP 1845320A2
Authority
EP
European Patent Office
Prior art keywords
accumulator
heat exchanger
refrigerant
inner heat
capillary tube
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.)
Withdrawn
Application number
EP07006460A
Other languages
German (de)
English (en)
Other versions
EP1845320A3 (fr
Inventor
Karl-Heinz Dipl.-Ing. Staffa
Thomas Dipl.-Ing. Tscheppe
Uli Dipl.-Ing. Vedder
Christoph Dipl.-Ing. Walter
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
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1845320A2 publication Critical patent/EP1845320A2/fr
Publication of EP1845320A3 publication Critical patent/EP1845320A3/fr
Withdrawn legal-status Critical Current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
    • F25B43/006—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
    • 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
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • 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
    • F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
    • F25B2341/001—Ejectors not being used as compression device
    • F25B2341/0016—Ejectors for creating an oil recirculation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—Component parts or details not otherwise provided for in this subclass
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/051—Compression system with heat exchange between particular parts of the system between the accumulator and another part of the cycle
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters

Definitions

  • the invention relates to an accumulator with an internal heat exchanger, in particular for a motor vehicle air conditioning system, according to the preamble of claim 1.
  • a compressor in an automotive air conditioning system using R744 as a refrigerant it must be lubricated with a refrigerator oil.
  • a small portion of the refrigerator oil used for lubrication leaks and thereby enters the refrigerant circuit, so that it is circulated in the refrigerant circuit as a refrigerant-refrigerator oil mixture. Since the amount of refrigerating machine oil in the compressor would thus decrease over the operating period, which would lead to damage to the compressor, it must be ensured that the refrigerating machine oil does not remain permanently in the refrigerant circuit but is returned to the compressor as lubricant.
  • the separation of the refrigerating machine oil from the refrigerant is normally carried out in an accumulator in which the refrigerant is collected in the liquid state.
  • an accumulator for use in an air conditioning system, in particular an automotive air conditioning system, which has a manifold for discharging fluid from a reservoir of the accumulator to recycle oil to the compressor.
  • a filter may be arranged at the lower end of the collecting tube, through which the inflowing oil flows into the collecting tube.
  • the accumulator has at least one inlet opening and one outlet opening.
  • the accumulator has a deflector to ensure that the fluid does not flow directly from the inlet port to the outlet port.
  • an outlet pipe is formed, which is in communication with the outlet opening. It has a first area with a relatively large diameter and a second area with a relatively small diameter, which is closer to the outlet opening than the first area.
  • the manifold is in communication with the second area.
  • an accumulator-heat exchanger combination unit in which a U-tube is arranged inside a rechargeable battery.
  • the inlet opening at one leg end is located in an area in which only gaseous refrigerant is located.
  • a bore is arranged in the lower region of the U-tube.
  • a helically extending line is arranged, which serves as an inner heat exchanger (see FIG. 4 of the above-mentioned US Pat ). This heats up flowing through the helical conduit, liquid refrigerant collected in the accumulator liquid refrigerant together with oil.
  • an accumulator is provided with a refrigerant inlet, through which the refrigerant enters the accumulator, a refrigerant outlet, through which substantially gaseous refrigerant exits from the interior of the accumulator, and with a capillary tube, through which oil-refrigerant mixture , particularly preferably substantially pure oil which has settled, wherein the refrigerant is in the liquid phase, is conveyed from the lower region of the accumulator interior and mixed with the gaseous refrigerant, wherein in the accumulator, an inner heat exchanger is integrated, which is substantially from gaseous refrigerant, which comes from the interior of the accumulator, can be flowed through.
  • a straight capillary tube can be used - in contrast to the conventionally used U-tubes with a hole for the oil inlet at the bottom.
  • the usability of a straight capillary tube increases the available space in the interior of the accumulator or allows greater freedom in the design of the accumulator with the same volume.
  • the oil sucked in from the lower region of the accumulator interior through the capillary tube is admixed, preferably shortly before the end, at the end of the inner heat exchanger and / or after the inner heat exchanger, to the substantially gaseous refrigerant. This can be done via one or possibly several openings.
  • the inner heat exchanger is preferably flowed through by the substantially gaseous refrigerant spirally from the inside to the outside.
  • the inner heat exchanger is arranged in the upper region of the accumulator.
  • the inner heat exchanger is preferably integrated directly into the lid of the accumulator, which is particularly space-saving, in particular in the case of a spiral configuration of the inner heat exchanger. This allows a particularly compact design and simplifies the production.
  • the refrigerant used is preferably R744, but other suitable refrigerant may be used.
  • the inner diameter of the capillary tube is preferably 0.1 mm to 3 mm, particularly preferably 0.2 to 2.5 and particularly preferably 0.2 to 1.5 mm.
  • the inner diameter of the capillary tube is preferably substantially constant over the entire length thereof.
  • a filter is arranged at the oil inlet into the capillary tube, which frees the refrigerant-oil mixture of impurities and thereby protects the later in the refrigerant circuit compressor arranged from damage.
  • a filter is preferably also arranged at the refrigerant outlet from the interior of the accumulator in the inner heat exchanger.
  • FIGURE shows a schematic representation of an accumulator with integrated heat exchanger, which is arranged in an R744 refrigerant circuit of an automotive air conditioning system, not shown.
  • the accumulator 1 has a refrigerant inlet 2, through which the refrigerant enters the accumulator 1, a capillary tube 3 and a lid 4 closing the accumulator 1 at the top.
  • the one end of the capillary tube 1 is arranged in the lowermost region of the accumulator 1 and the other end on the lid 4 of the accumulator 1 arranged on top.
  • the capillary tube 3 is used for discharging and later admixing of the oil and liquid refrigerant collecting in the lower region of the accumulator 1, wherein it has a constant inner diameter of 1.2 mm in the present case.
  • an inner heat exchanger 5 designed as a spiral is formed integrated in the cover 4, through which the essentially gaseous refrigerant flows from the inside to the outside and in which a heat exchange takes place.
  • the substantially gaseous refrigerant is added on its way through the inner heat exchanger 5, the discharged through the capillary tube 3 from the accumulator 1 oil-refrigerant mixture just before it exits the inner heat exchanger 5 at the outlet 6, ie on the low pressure side of the inner Heat exchanger 5, and the subsequent compressor (not shown) passes.
  • a filter 7 and 8 is arranged in which impurities o.ä. be filtered out.
  • a dryer 9 is arranged with a desiccant in the lower third of the battery 1, but the dryer 9 can also be omitted.

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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)
EP07006460A 2006-04-10 2007-03-29 Accumulateur avec échangeur de chaleur interne, en particulier pour une installation de climatisation de véhicule Withdrawn EP1845320A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610017071 DE102006017071A1 (de) 2006-04-10 2006-04-10 Akkumulator mit innerem Wärmetauscher, insbesondere für eine Kraftfahrzeug-Klimaanlage

Publications (2)

Publication Number Publication Date
EP1845320A2 true EP1845320A2 (fr) 2007-10-17
EP1845320A3 EP1845320A3 (fr) 2010-03-10

Family

ID=38255797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07006460A Withdrawn EP1845320A3 (fr) 2006-04-10 2007-03-29 Accumulateur avec échangeur de chaleur interne, en particulier pour une installation de climatisation de véhicule

Country Status (2)

Country Link
EP (1) EP1845320A3 (fr)
DE (1) DE102006017071A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2963364A1 (fr) * 2014-06-30 2016-01-06 Eaton Industrial IP GmbH & Co. KG Accumulateur destiné à un système de conditionnement d'air

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2978536B1 (fr) 2011-07-25 2013-08-23 Valeo Systemes Thermiques Bouteille reservoir de fluide refrigerant et echangeur de chaleur comprenant une telle bouteille

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2602582C2 (de) * 1976-01-21 1983-03-31 Erich Schultze KG, 1000 Berlin Flüssigkeitsabscheider für Kälteanlagen
DE3119440A1 (de) * 1981-05-15 1982-12-09 Erich Schultze KG, 1000 Berlin "anlagen-waermeaustauscher fuer kaelteanlagen"
US4509340A (en) * 1983-11-10 1985-04-09 Sealed Power Corporation Accumulator-dehydrator assembly for an air conditioning system
US5628200A (en) * 1995-01-12 1997-05-13 Wallace Heating & Air Conditioning, Inc. Heat pump system with selective space cooling
DE19635454B4 (de) * 1996-08-31 2010-06-17 Behr Gmbh & Co. Kg Sammler-Wärmeübertrager-Baueinheit und damit ausgerüstete Klimaanlage
DE19808893A1 (de) * 1998-03-03 1999-09-09 Behr Gmbh & Co Wärmeübertragereinheit und diese enthaltende Sammler-Wärmeübertrager-Baueinheit
US6418751B1 (en) * 2000-10-03 2002-07-16 Delphi Technologies, Inc. Accumulator-dehydrator assembly with anti-bump/venturi effect oil return feature for an air conditioning system
US6467300B1 (en) * 2001-03-27 2002-10-22 John O. Noble, III Refrigerated intercooler
EP1279911B2 (fr) * 2001-07-23 2014-04-23 Zexel Valeo Climate Control Corporation L'usage de la tuyauterie de frigorigène pour système de climatisation de véhicule
DE10348141B3 (de) * 2003-10-09 2005-02-03 Visteon Global Technologies, Inc., Dearborn Innerer Wärmeübertrager für Hochdruckkältemittel mit Akkumulator
US20050081559A1 (en) * 2003-10-20 2005-04-21 Mcgregor Ian A.N. Accumulator with pickup tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2963364A1 (fr) * 2014-06-30 2016-01-06 Eaton Industrial IP GmbH & Co. KG Accumulateur destiné à un système de conditionnement d'air

Also Published As

Publication number Publication date
DE102006017071A1 (de) 2007-10-11
EP1845320A3 (fr) 2010-03-10

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