EP1893926B1 - Condenser for an air conditioning system - Google Patents

Condenser for an air conditioning system Download PDF

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Publication number
EP1893926B1
EP1893926B1 EP06754089.8A EP06754089A EP1893926B1 EP 1893926 B1 EP1893926 B1 EP 1893926B1 EP 06754089 A EP06754089 A EP 06754089A EP 1893926 B1 EP1893926 B1 EP 1893926B1
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EP
European Patent Office
Prior art keywords
modulator
partition
condenser
standpipe
riser
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.)
Revoked
Application number
EP06754089.8A
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German (de)
French (fr)
Other versions
EP1893926A1 (en
Inventor
Dirk Lautner
Stefan Herwig
Hiroyasu Shimanuki
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.)
Denso Automotive Deutschland GmbH
Denso Corp
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Denso Automotive Deutschland GmbH
Denso Corp
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Application filed by Denso Automotive Deutschland GmbH, Denso Corp filed Critical Denso Automotive Deutschland GmbH
Publication of EP1893926A1 publication Critical patent/EP1893926A1/en
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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
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/02—Subcoolers
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/044—Condensers with an integrated receiver
    • F25B2339/0441—Condensers with an integrated receiver containing a drier or a filter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/16—Receivers
    • F25B2400/162—Receivers characterised by the plug or stop

Definitions

  • the invention relates to a condenser for an air conditioning system, in particular for motor vehicles, according to the preamble of claim 1.
  • Such a capacitor describes DE 102 50 384 A1 ,
  • a filter is integrally formed with a cover member, the partition member and a suction pipe.
  • DE 103 45 921 A1 shows a condenser and a receiving device for desiccant, wherein a tubular collector is provided with a closure lid to which a seal is attached as a separating element.
  • EP 480,330 It is known to form a condenser for an air conditioner with an overhead condensing section through which gaseous refrigerant flows, and a subcooling section below, through which flows the condensed liquid refrigerant, which is passed on to an expansion valve.
  • a tubular modulator On the side of the plate-shaped finned tube block condenser or at a distance from this, a tubular modulator is provided, in which a desiccant for absorbing moisture contained in the refrigerant can be arranged.
  • a condenser in the flow direction of the air in front of the condenser in the lower region of a charge air cooler can be arranged, as used in particular in diesel vehicles, a condenser is provided with an overhead subcooling, under which the Kondensierabites is arranged. As a result, the subcooling section is not affected by the heat radiation of the intercooler.
  • a closure plug is preferably provided at the upper end of the modulator in a condenser with overhead supercooling section, after which a divider dividing the modulator into an upper and a lower section with a desiccant container attached thereto can be pulled out of the modulator up with a riser.
  • the partition with container for desiccant and riser forms an exchange unit used in the modulator, on the one hand simplifies the assembly and on the other hand the maintenance of the capacitor and made with little expenditure of time.
  • Fig. 1 shows a plate-shaped condenser 1, which has an approximately rectangular shape and is composed of horizontally extending finned tubes 1a for the refrigerant, wherein perpendicular to the plane of the drawing between the finned tubes 1a air flows through the condenser.
  • the condenser 1 has a lower condensing section 1b through which gaseous refrigerant flows, and above it a subcooling section 1c separated by a partition wall 1f from the condensing section 1b, through which condensed liquid refrigerant flows.
  • the gaseous refrigerant is supplied through an inlet opening 1d on one side of the condensing section 1b and flows through the horizontally located finned tubes 1a to an outlet opening 1e on the opposite side. Both the inlet opening 1 d and the outlet opening 1 e are arranged at a distance from the lower end of the Kondensierabitess 1 b. To reduce the pressure loss with respect to a serpentine-shaped flow guide in the condensing section 1b flows in the design Fig. 1 the gaseous refrigerant horizontally between inlet and outlet.
  • a modulator 2 is tubular and preferably has a diameter in the order of the thickness of the plate-shaped condensate 1.
  • This tubular modulator preferably extends over the height of the capacitor 1, wherein a connecting line 3 with the outlet opening 1e of the condensing 1b opens approximately at the same height in the modulator 2 at 2a, so that below the mouth opening 2a in the modulator a reservoir for liquid refrigerant is formed, which can collect in this area.
  • the modulator 2 is divided by a partition wall 2b into a lower portion 2c and upper portion 2d, the partition 2b being located approximately at the height of the partition wall 1f between the condensing portion 1b and the sub-cooling portion 1c.
  • the upper portion 2d of the modulator is connected to the subcooling portion 1c of the condenser 1 through a connection line 3a.
  • This connecting line 3a is preferably located directly above the partitions 2b and 1f or in the lower part of the upper part 2d of the modulator and in the lower part of the subcooling part 1c of the condenser.
  • a riser pipe 4 leads from the upper portion 2d of the modulator to the lower portion of the lower portion 2c.
  • the riser pipe 4 ends at a small distance from the bottom of the modulator 2. From the subcooling section 1 c, the condensed refrigerant exits through an outlet opening 1 g, from which a line, not shown, leads to an expansion valve. Through the riser pipe 4, the refrigerant conducted from the condensing section 1b into the modulator is directed upward into the subcooling section 1c, in which the liquid refrigerant is subjected to targeted heat dissipation.
  • a filter 5 can be provided ( Fig. 1, 4th . 3b and 3c ), which is flowed through by the refrigerant before it is transferred through the riser into the subcooling section 1c. It is also possible to arrange the filter at the upper end of the riser 4 and in the upper portion 2d, as this Fig. 2, 3a and 5 show, wherein the upper filter is denoted by 5 '.
  • Fig. 2 shows schematically eihe design in which the filter 5 'is arranged between the outlet opening of the riser 4 and connection opening 2e to the subcooling 1c so that the ascending through the riser pipe 4 refrigerant on its way to the subcooling section 1c the filter 5' must flow.
  • Fig. 2 1 schematically shows an embodiment in which the modulator 2 is mounted directly on the side surface of the condenser 1 so that the modulator 2 is separated from the condensing section 1b and the subcooling section 1c of the condenser only by a partition wall.
  • a connection line 3, 3a between the individual sections of condenser and modulator so that only one connection opening le between condensing section 1b and lower section 2c of the modulator and a connection opening 2e between upper section 2d of the modulator and subcooling section 1c of the condenser remain in the common partition wall.
  • the modulator 2 is closed at the top by a sealing plug 6, which can be screwed into the tubular modulator, for example with a thread.
  • the partition wall 2b can with a handle 2f ( Fig. 3b, c ) or another device which, after removal of the sealing plug 6, allows the partition 2b to be pulled out of the modulator.
  • the partition wall 2b which is provided on the outer periphery with a sealing ring, so that the upper portion 2d is sealed against the lower portion 2c in the modulator, is connected to the riser 4 and a container, for example a bag 7 or a drying agent cartridge, so These components 2b, 4, 5 and 7 form an exchange unit which can be pulled out of the modulator 2 from above after loosening the sealing plug 6.
  • the seal on the outer periphery of the partition wall 2b is preferably connected to it so that it is taken out of the modulator 2 with the exchange unit, so that it can be replaced if necessary. But it is also possible to provide a seal in the modulator 2, in which the partition 2b is used. In the design with seal on the partition wall 2b, a seal seat is preferably provided on the inner circumference of the modulator 2.
  • the bag 7 with desiccant is removably attached to the circumference of the riser 4.
  • the stopper 6 When reinserting the exchange unit can be inserted into the modulator and then the modulator are closed by the stopper 6.
  • a spacer for the partition which positions after insertion of the exchange unit and tightening the sealing plug, the partition wall 2b with the seal on the circumference in the predetermined position, wherein the partition at a sealing seat in the modulator is applied.
  • Fig. 3 shows different types of exchange units.
  • a bag 7 is hung on a hook 4a attached to the riser 4.
  • a retaining bracket 4b is formed on the riser 4, in which the bag 7 can be used.
  • Fig. 3c shows an embodiment with a curved riser 4 'or provided with a bulge riser, wherein the bag 7 is hooked to a hook on the riser 4'.
  • the diameter of the modulator 2 can be kept low.
  • a clip connection between bag 7 and riser 4 or partition 2b may be provided.
  • a tubular bag 7 'or tubular cartridge for desiccant can be provided, through the center of which the riser pipe 4 extends, so that the tubular bag 7' with desiccant from below onto the riser 4 can be deferred.
  • a disc 4d can be screwed onto the lower end of the riser 4.
  • the filter 5 with the disc 4 d is detachably connected to the riser 4.
  • the container 7 may be connected with desiccant fixed to the riser, wherein only the desiccant is interchangeable in the container or wherein the container 7 with riser and filter 5 is replaceable when the desiccant replaced shall be.
  • Fig. 4 shows a modified design in which at a distance from the bottom of the Kondensierabitess from the outlet opening 1e to the modulator 2 leading line 3 'in the lower region of the modulator at 2a' opens.
  • a reservoir for liquid refrigerant is formed in the modulator up to the height of the outlet opening 1e at the subcooling section.
  • the advantage of the arrangement of the outlet opening 1e at a distance above the bottom of the modulator 2 for forming a reservoir for liquid grinding agent in the modulator is that a backflow of liquid refrigerant is prevented in the Kondenserabites when the air conditioner is not in operation. By such a backflow of Liquid refrigerant in the idle state of the air conditioner could damage the re-commissioning occur.
  • the advantage of the exchange unit is mainly in the possible replacement of the polluting component filter 5 and riser 4. After replacing the exchange unit of the refrigerant side pressure drop can be reduced again, which is mainly due to the outlet opening 1e on Kondensierabites and by contamination of riser. 4 and filter 5 is amplified. Especially when the filter 5 is placed at the upper end of the riser 4, as this Fig. 2, 3a and 5 show, deposits can occur in the region of the riser pipe 4, which can be quickly eliminated by an exchange.
  • Fig. 5 shows a practical embodiment of a change unit, wherein the same reference numerals are used for the same or corresponding components as in the preceding figures.
  • a cage-shaped filter housing 50 is disposed above the partition 2b and between the filter housing and the partition wall 2b, a sealing ring 51 is provided, which ensures the seal between the upper and lower portion in the modulator.
  • the laterally open filter housing 50 for the discharge of the refrigerant is fixedly connected to the partition wall 2 b and the riser pipe 4.
  • the partition 2b may be formed integrally with the filter housing 50.
  • the sealing ring 51 can be used.
  • the filter housing 50 may be constructed, for example, of an upper disc 50a and a lower disc 50b, which are interconnected by webs 50c.
  • the filter housing 50 may be provided with a handle device 2f. Preferably, 50 recesses are provided on the top of the filter housing in the z. B. elastic hooks 61 of a pull-out tool 60 could be used under snap action, when the plug 6 is removed on the modulator 2. The hooks engage behind a shoulder in the recess in the filter housing, so that the exchange unit can be pulled out of the modulator 2 by means of the tool 60 upwards.
  • Fig. 6 shows an embodiment of such a tool 60
  • the U-shaped hooks 61 are elastically deformable in the radial direction to a paragraph in the filter housing 50 to pull out to pull out. But it can also be provided a trained in other ways tool.
  • the exchange unit comprises at least the partition 2b and the container 7 with desiccant.
  • the riser 4 is integrated with filter 5 in the exchange unit.
  • the exchange unit in two parts, so that after removal of the sealing plug initially a part, for. As the partition, is pulled out of the modulator and then the other elements are removed from the modulator.
  • a sealing plug is provided on the underside of the modulator 2, so that after the closure plug has been released, the exchange unit can be pulled down out of the modulator.
  • the riser 4 serve as a handle device by means of the partition wall can be pulled out of the modulator.
  • a downwardly projecting handle is also possible.
  • a stop is preferably provided, on which the partition wall or an element of the exchange unit comes to rest during insertion.

Description

Die Erfindung betrifft einen Kondensator für eine Klimaanlage, insbesondere für Kraftfahrzeuge, nach dem Oberbegriff des Anspruchs 1.The invention relates to a condenser for an air conditioning system, in particular for motor vehicles, according to the preamble of claim 1.

Einen derartigen Kondensator beschreibt DE 102 50 384 A1 . In einem Behälter, der ein Trennelement aufweist, ist ein Filter einstückig mit einem Abdeckelement, dem Trennelement und einem Saugrohr ausgebildet ist.Such a capacitor describes DE 102 50 384 A1 , In a container having a partition member, a filter is integrally formed with a cover member, the partition member and a suction pipe.

DE 103 45 921 A1 zeigt einen Kondensator und eine Aufnahmevorrichtung für Trocknungsmittel, wobei ein rohrförmiger Sammler mit einem Verschlussdeckel versehen ist, an dem eine Dichtung als Trennelement angebracht ist. DE 103 45 921 A1 shows a condenser and a receiving device for desiccant, wherein a tubular collector is provided with a closure lid to which a seal is attached as a separating element.

Aus EP 480 330 ist es bekannt, einen Kondensator für eine Klimaanlage mit einem oben liegenden Kondensierabschnitt, der von gasförmigem Kältemittel durchströmt wird, und einem darunter angeordneten Unterkühlabschnitt auszubilden, durch den das kondensierte, flüssige Kältemittel strömt, das zu einem Expansionsventil weitergeleitet wird. Seitlich an dem aus einem plattenförmigen Rippenrohrblock bestehenden Kondensator bzw. in einem Abstand von diesem wird ein rohrförmiger Modulator vorgesehen, in dem ein Trocknungsmittel zum Absorbieren von im Kältemittel enthaltener Feuchtigkeit angeordnet sein kann.Out EP 480,330 It is known to form a condenser for an air conditioner with an overhead condensing section through which gaseous refrigerant flows, and a subcooling section below, through which flows the condensed liquid refrigerant, which is passed on to an expansion valve. On the side of the plate-shaped finned tube block condenser or at a distance from this, a tubular modulator is provided, in which a desiccant for absorbing moisture contained in the refrigerant can be arranged.

Damit in Strömungsrichtung der Luft vor dem Kondensator in dessen unterem Bereich ein Ladeluftkühler angeordnet werden kann, wie er insbesondere bei Dieselfahrzeugen verwendet wird, wird ein Kondensator mit einem oben liegenden Unterkühlabschnitt vorgesehen, unter dem der Kondensierabschnitt angeordnet ist. Hierdurch wird der Unterkühlabschnitt nicht durch die Wärmeabstrahlung des Ladeluftkühlers beeinträchtigt.Thus, in the flow direction of the air in front of the condenser in the lower region of a charge air cooler can be arranged, as used in particular in diesel vehicles, a condenser is provided with an overhead subcooling, under which the Kondensierabschnitt is arranged. As a result, the subcooling section is not affected by the heat radiation of the intercooler.

Um die Montage und Wartung des Kondensators zu vereinfachen, wird erfindungsgemäß bei einem Kondensator mit oben liegendem Unterkühlabschnitt vorzugsweise am oberen Ende des Modulators ein Verschlussstopfen vorgesehen, nach dessen Abnahme eine den Modulator in einen oberen und einen unteren Abschnitt unterteilende Trennwand mit daran angebrachtem Behälter für Trocknungsmittel zusammen mit einem Steigrohr aus dem Modulator nach oben herausgezogen werden kann. Hierbei bildet die Trennwand mit Behälter für Trocknungsmittel und Steigrohr eine in den Modulator eingesetzte Wechseleinheit, durch die einerseits die Montage und andererseits die Wartung des Kondensators vereinfacht und mit geringem Zeitaufwand vorgenommen werden.In order to simplify the assembly and maintenance of the condenser, according to the invention a closure plug is preferably provided at the upper end of the modulator in a condenser with overhead supercooling section, after which a divider dividing the modulator into an upper and a lower section with a desiccant container attached thereto can be pulled out of the modulator up with a riser. Here, the partition with container for desiccant and riser forms an exchange unit used in the modulator, on the one hand simplifies the assembly and on the other hand the maintenance of the capacitor and made with little expenditure of time.

Die Erfindung wird beispielsweise anhand der Zeichnung näher erläutert. Es zeigen

Fig. 1
schematisch eine Ansicht eines Kondensators mit oben liegendem Unterkühlabschnitt und einer Wechseleinheit im seitlich angeordneten Modulator,
Fig. 2
eine Ansicht des Kondensators mit seitlich angebautem Modulator und Wechseleinheit,
Fig. 3
Ausführungsformen von Wechseleinheiten für den Modulator,
Fig. 4
eine abgewandelte Ausführungsform des Kondensators,
Fig. 5
eine praktische Ausführungsform der Wechseleinheit, und
Fig. 6
ein Werkzeug zum Herausziehen der Wechseleinheit aus dem Modulator.
The invention will be explained in more detail for example with reference to the drawing. Show it
Fig. 1
1 is a schematic view of a condenser with an overhead subcooling section and an exchange unit in the laterally arranged modulator;
Fig. 2
a view of the capacitor with laterally mounted modulator and exchange unit,
Fig. 3
Embodiments of exchange units for the modulator,
Fig. 4
a modified embodiment of the capacitor,
Fig. 5
a practical embodiment of the exchange unit, and
Fig. 6
a tool for extracting the exchange unit from the modulator.

Fig. 1 zeigt einen plattenförmigen Kondensator 1, der eine etwa rechteckige Form hat und aus horizontal verlaufenden Rippenrohren 1a für das Kältemittel aufgebaut ist, wobei senkrecht zur Zeichnungsebene zwischen den Rippenrohren 1a Luft durch den Kondensator strömt. Der Kondensator 1 weist einen unten liegenden Kondensierabschnitt 1b auf, der von gasförmigem Kältemittel durchströmt wird, und darüber liegend einen durch eine Trennwand 1 f gegenüber dem Kondensierabschnitt 1 b abgetrennten Unterkühlabschnitt 1c, durch den kondensiertes, flüssiges Kältemittel strömt. Das gasförmige Kältemittel wird durch eine Eintrittsöffnung 1d auf einer Seite des Kondensierabschnitts 1b zugeführt und strömt durch die horizontal liegenden Rippenrohre 1 a zu einer Austrittsöffnung 1e auf der gegenüberliegenden Seite. Sowohl die Eintrittsöffnung 1 d wie auch die Austrittsöffnung 1e sind in einem Abstand vom unteren Ende des Kondensierabschnitts 1b angeordnet. Zur Verringerung des Druckverlustes gegenüber einer serpentinenförmig ausgebildeten Strömungsführung im Kondensierabschnitt 1b strömt bei der Bauform nach Fig. 1 das gasförmige Kältemittel horizontal zwischen Eintrittsund Austrittsöffnung. Fig. 1 shows a plate-shaped condenser 1, which has an approximately rectangular shape and is composed of horizontally extending finned tubes 1a for the refrigerant, wherein perpendicular to the plane of the drawing between the finned tubes 1a air flows through the condenser. The condenser 1 has a lower condensing section 1b through which gaseous refrigerant flows, and above it a subcooling section 1c separated by a partition wall 1f from the condensing section 1b, through which condensed liquid refrigerant flows. The gaseous refrigerant is supplied through an inlet opening 1d on one side of the condensing section 1b and flows through the horizontally located finned tubes 1a to an outlet opening 1e on the opposite side. Both the inlet opening 1 d and the outlet opening 1 e are arranged at a distance from the lower end of the Kondensierabschnitts 1 b. To reduce the pressure loss with respect to a serpentine-shaped flow guide in the condensing section 1b flows in the design Fig. 1 the gaseous refrigerant horizontally between inlet and outlet.

Es ist aber auch möglich, bei der erfindungsgemäßen Bauform eine serpentinenförmige Gasführung im Kondensierabschnitt zwischen Eintrittsöffnung 1d und Austrittsöffnung 1e vorzusehen.However, it is also possible to provide a serpentine-shaped gas guide in the condensing section between the inlet opening 1d and the outlet opening 1e in the design according to the invention.

An die Austrittsöffnung 1e des Kondensierabschnitts 1b ist ein Modulator 2 angeschlossen, der rohrförmig ausgebildet ist und vorzugsweise einen Durchmesser in der Größenordnung der Dicke des plattenförmigen Kondensates 1 hat. Dieser rohrförmige Modulator erstreckt sich vorzugsweise über die Höhe des Kondensators 1, wobei eine Verbindungsleitung 3 mit der Austrittsöffnung 1e des Kondensierabschnitts 1b etwa auf gleicher Höhe in den Modulator 2 bei 2a, mündet, sodass unterhalb der Mündungsöfmung 2a im Modulator ein Reservoir für flüssiges Kältemittel ausgebildet wird, das sich in diesem Bereich sammeln kann.To the outlet opening 1e of the Kondensierabschnitts 1 a modulator 2 is connected, which is tubular and preferably has a diameter in the order of the thickness of the plate-shaped condensate 1. This tubular modulator preferably extends over the height of the capacitor 1, wherein a connecting line 3 with the outlet opening 1e of the condensing 1b opens approximately at the same height in the modulator 2 at 2a, so that below the mouth opening 2a in the modulator a reservoir for liquid refrigerant is formed, which can collect in this area.

Der Modulator 2 ist durch eine Trennwand 2b in einen unteren Abschnitt 2c und oberen Abschnitt 2d unterteilt, wobei die Trennwand 2b etwa auf der Höhe der Trennwand 1f zwischen Kondensierabschnitt 1b und Unterkühlabschnitt 1c liegt. Der obere Abschnitt 2d des Modulators ist durch eine Verbindungsleitung 3a mit dem Unterkühlabschnitt 1c des Kondensators 1 verbunden. Diese Verbindungsleitung 3a liegt vorzugsweise unmittelbar über den Trennwänden 2b und 1f bzw. im unteren Bereich des oberen Abschnitts 2d des Modulators und im unteren Bereich des Unterkühlabschnitts 1c des Kondensators. Durch die Trennwand 2b führt ein Steigrohr 4 von dem oberen Abschnitt 2d des Modulators in den unteren Bereich des unteren Abschnitts 2c. Vorzugsweise endet das Steigrohr 4 in einem geringen Abstand vom Boden des Modulators 2. Aus dem Unterkühlabschnitt 1 c tritt das kondensierte Kältemittel durch eine Austrittsöffnung 1g aus, von der eine nicht dargestellte Leitung zu einem Expansionsventil führt. Durch das Steigrohr 4 wird das vom Kondensierabschnitt 1b in den Modulator geleitete Kältemittel nach oben in den Unterkühlabschnitt 1c geleitet, in dem das flüssige Kältemittel einer gezielten Wärmeabfuhr unterzogen wird.The modulator 2 is divided by a partition wall 2b into a lower portion 2c and upper portion 2d, the partition 2b being located approximately at the height of the partition wall 1f between the condensing portion 1b and the sub-cooling portion 1c. The upper portion 2d of the modulator is connected to the subcooling portion 1c of the condenser 1 through a connection line 3a. This connecting line 3a is preferably located directly above the partitions 2b and 1f or in the lower part of the upper part 2d of the modulator and in the lower part of the subcooling part 1c of the condenser. Through the partition wall 2b, a riser pipe 4 leads from the upper portion 2d of the modulator to the lower portion of the lower portion 2c. Preferably, the riser pipe 4 ends at a small distance from the bottom of the modulator 2. From the subcooling section 1 c, the condensed refrigerant exits through an outlet opening 1 g, from which a line, not shown, leads to an expansion valve. Through the riser pipe 4, the refrigerant conducted from the condensing section 1b into the modulator is directed upward into the subcooling section 1c, in which the liquid refrigerant is subjected to targeted heat dissipation.

Am unteren Ende des Steigrohres 4 kann ein Filter 5 vorgesehen werden (Fig. 1, 4, 3b und 3c), der von dem Kältemittel durchströmt wird, bevor es durch das Steigrohr in den Unterkühlabschnitt 1c überführt wird. Es ist auch möglich, den Filter am oberen Ende des Steigrohrs 4 bzw. im oberen Abschnitt 2d anzuordnen, wie dies Fig. 2, 3a und 5 zeigen, wobei der oben liegende Filter mit 5' bezeichnet ist.At the lower end of the riser 4, a filter 5 can be provided ( Fig. 1, 4th . 3b and 3c ), which is flowed through by the refrigerant before it is transferred through the riser into the subcooling section 1c. It is also possible to arrange the filter at the upper end of the riser 4 and in the upper portion 2d, as this Fig. 2, 3a and 5 show, wherein the upper filter is denoted by 5 '.

Fig. 2 zeigt schematisch eihe Bauform, bei der der Filter 5' zwischen Austrittsöffnung des Steigrohres 4 und Verbindungsöffnung 2e zum Unterkühlabschnitt 1c so angeordnet ist, dass das durch das Steigrohr 4 aufsteigende Kältemittel auf seinem Weg zum Unterkühlabschnitt 1c den Filter 5' durchströmen muss. Fig. 2 shows schematically eihe design in which the filter 5 'is arranged between the outlet opening of the riser 4 and connection opening 2e to the subcooling 1c so that the ascending through the riser pipe 4 refrigerant on its way to the subcooling section 1c the filter 5' must flow.

Fig. 2 zeigt schematisch eine Ausführungsform, bei der der Modulator 2 unmittelbar an die Seitenfläche des Kondensators 1 angebaut ist, sodass der Modulator 2 nur durch eine Trennwand vom Kondensierabschnitt 1b und dem Unterkühlabschnitt 1c des Kondensators getrennt ist. In diesem Falle entfällt eine Verbindungsleitung 3, 3a zwischen den einzelnen Abschnitten von Kondensator und Modulator, sodass nur eine Verbindungsöffnung le zwischen Kondensierabschnitt 1b und unterem Abschnitt 2c des Modulators sowie eine Verbindungsöffnung 2e zwischen oberem Abschnitt 2d des Modulators und Unterkühlabschnitt 1c des Kondensators in der gemeinsamen Trennwand verbleibt. Fig. 2 1 schematically shows an embodiment in which the modulator 2 is mounted directly on the side surface of the condenser 1 so that the modulator 2 is separated from the condensing section 1b and the subcooling section 1c of the condenser only by a partition wall. In this case, eliminates a connection line 3, 3a between the individual sections of condenser and modulator so that only one connection opening le between condensing section 1b and lower section 2c of the modulator and a connection opening 2e between upper section 2d of the modulator and subcooling section 1c of the condenser remain in the common partition wall.

Der Modulator 2 ist oben durch einen Verschlussstopfen 6 verschlossen, der beispielsweise mit einem Gewinde in den rohrförmigen Modulator eingeschraubt sein kann. Die Trennwand 2b kann mit einem Griffbügel 2f (Fig. 3b, c) oder einer anderen Einrichtung versehen sein, die nach Abnahme des Verschlussstopfens 6 ein Herausziehen der Trennwand 2b aus dem Modulator ermöglicht. Die Trennwand 2b, die auf dem Außenumfang mit einem Dichtungsring versehen ist, damit der obere Abschnitt 2d gegenüber dem unteren Abschnitt 2c im Modulator abgedichtet ist, ist mit dem Steigrohr 4 und einem Behälter, beispielsweise einem Beutel 7 oder einer Patrone für Trocknungsmittel verbunden, sodass diese Bauteile 2b, 4, 5 und 7 eine Wechseleinheit bilden, die nach Lösen des Verschlussstopfens 6 von oben aus dem Modulator 2 herausgezogen werden kann. Die Dichtung auf dem Außenumfang der Trennwand 2b ist vorzugsweise mit dieser so verbunden, dass sie mit der Wechseleinheit aus dem Modulator 2 herausgenommen wird, damit sie gegebenenfalls ersetzt werden kann. Es ist aber auch möglich, eine Dichtung im Modulator 2 vorzusehen, in die die Trennwand 2b eingesetzt wird. Bei der Bauform mit Dichtung an der Trennwand 2b wird vorzugsweise ein Dichtungssitz auf dem Innenumfang des Modulators 2 vorgesehen.The modulator 2 is closed at the top by a sealing plug 6, which can be screwed into the tubular modulator, for example with a thread. The partition wall 2b can with a handle 2f ( Fig. 3b, c ) or another device which, after removal of the sealing plug 6, allows the partition 2b to be pulled out of the modulator. The partition wall 2b, which is provided on the outer periphery with a sealing ring, so that the upper portion 2d is sealed against the lower portion 2c in the modulator, is connected to the riser 4 and a container, for example a bag 7 or a drying agent cartridge, so These components 2b, 4, 5 and 7 form an exchange unit which can be pulled out of the modulator 2 from above after loosening the sealing plug 6. The seal on the outer periphery of the partition wall 2b is preferably connected to it so that it is taken out of the modulator 2 with the exchange unit, so that it can be replaced if necessary. But it is also possible to provide a seal in the modulator 2, in which the partition 2b is used. In the design with seal on the partition wall 2b, a seal seat is preferably provided on the inner circumference of the modulator 2.

Der Beutel 7 mit Trocknungsmittel ist am Umfang des Steigrohres 4 abnehmbar befestigt sein.The bag 7 with desiccant is removably attached to the circumference of the riser 4.

Beim Wiedereinsetzen kann die Wechseleinheit in den Modulator eingeführt und danach der Modulator durch den Verschlussstopfen 6 verschlossen werden. Nach einer anderen Ausgestaltung kann an dem Verschlussstopfen 6 ein Abstandhalter für die Trennwand vorgesehen sein, der nach dem Einsetzen der Wechseleinheit und Festziehen des Verschlussstopfens die Trennwand 2b mit der Dichtung auf dem Umfang in der vorbestimmten Stellung positioniert, wobei die Trennwand an einem Dichtungssitz im Modulator anliegt.When reinserting the exchange unit can be inserted into the modulator and then the modulator are closed by the stopper 6. According to another embodiment may be provided on the closure plug 6, a spacer for the partition, which positions after insertion of the exchange unit and tightening the sealing plug, the partition wall 2b with the seal on the circumference in the predetermined position, wherein the partition at a sealing seat in the modulator is applied.

Fig. 3 zeigt verschiedene Bauformen von Wechseleinheiten. Nach Fig. 3a und 3c ist ein Beutel 7 an einem am Steigrohr 4 angebrachten Haken 4a eingehängt. Bei der Ausführungsform nach Fig. 3b, welche eine Ausführungsform beschreibt, die nicht Bestandteil der Erfindung ist, ist am Steigrohr 4 ein Haltebügel 4b ausgebildet, in den der Beutel 7 eingesetzt werden kann. Fig. 3 shows different types of exchange units. To Fig. 3a and 3c a bag 7 is hung on a hook 4a attached to the riser 4. In the embodiment to Fig. 3b , which describes an embodiment which is not part of the invention, a retaining bracket 4b is formed on the riser 4, in which the bag 7 can be used.

Fig. 3c zeigt eine Ausführungsform mit einem gekrümmten Steigrohr 4' bzw. einem mit einer Ausbuchtung versehenen Steigrohr, wobei der Beutel 7 an einem Haken am Steigrohr 4' eingehängt ist. Durch diese Ausgestaltung kann der Durchmesser des Modulators 2 gering gehalten werden. Anstelle eines Hakens kann auch eine Clipverbindung zwischen Beutel 7 und Steigrohr 4 bzw. Trennwand 2b vorgesehen werden. Fig. 3c shows an embodiment with a curved riser 4 'or provided with a bulge riser, wherein the bag 7 is hooked to a hook on the riser 4'. By this configuration, the diameter of the modulator 2 can be kept low. Instead of a hook, a clip connection between bag 7 and riser 4 or partition 2b may be provided.

Nach Fig. 3d, welche eine Ausführungsform beschreibt, die nicht Bestandteil der Erfindung ist, kann ein rohrförmiger Beutel 7' oder eine rohrförmige Patrone für Trocknungsmittel vorgesehen werden, durch deren Mitte sich das Steigrohr 4 erstreckt, sodass der rohrförmige Beutel 7' mit Trocknungsmittel von unten auf das Steigrohr 4 aufgeschoben werden kann. Zur Halterung kann eine Scheibe 4d auf das untere Ende des Steigrohres 4 aufgeschraubt werden. Bei dieser Ausführungsform ist der Filter 5 mit der Scheibe 4d abnehmbar mit dem Steigrohr 4 verbunden.To Fig. 3d US-5,611,015 which describes an embodiment which does not form part of the invention, a tubular bag 7 'or tubular cartridge for desiccant can be provided, through the center of which the riser pipe 4 extends, so that the tubular bag 7' with desiccant from below onto the riser 4 can be deferred. For holding a disc 4d can be screwed onto the lower end of the riser 4. In this embodiment, the filter 5 with the disc 4 d is detachably connected to the riser 4.

Nach einer weiteren Ausgestaltung, die kein Bestandteil der Erfindung ist, kann der Behälter 7 mit Trocknungsmittel fest mit dem Steigrohr verbunden sein, wobei nur das Trocknungsmittel im Behälter austauschbar ist oder wobei der Behälter 7 mit Steigrohr und Filter 5 auswechselbar ist, wenn das Trocknungsmittel ersetzt werden soll.According to a further embodiment, which is not part of the invention, the container 7 may be connected with desiccant fixed to the riser, wherein only the desiccant is interchangeable in the container or wherein the container 7 with riser and filter 5 is replaceable when the desiccant replaced shall be.

Fig. 4 zeigt eine abgewandelte Bauform, bei der die in einem Abstand vom Boden des Kondensierabschnitts von der Austrittsöffnung 1e zum Modulator 2 führende Leitung 3' in den unteren Bereich des Modulators bei 2a' mündet. Auch bei dieser Bauform entsteht im Modulator ein Reservoir für flüssiges Kältemittel bis auf die Höhe der Austrittsöffnung 1e am Unterkühlabschnitt. Fig. 4 shows a modified design in which at a distance from the bottom of the Kondensierabschnitts from the outlet opening 1e to the modulator 2 leading line 3 'in the lower region of the modulator at 2a' opens. In this design too, a reservoir for liquid refrigerant is formed in the modulator up to the height of the outlet opening 1e at the subcooling section.

Der Vorteil der Anordnung der Austrittsöffnung 1e in einem Abstand über dem Boden des Modulators 2 zur Ausbildung eines Reservoirs für flüssiges Klältemittel im Modulator besteht darin, dass eine Rückströmung von flüssigem Kältemittel in den Kondenserabschnitt verhindert wird, wenn die Klimaanlage nicht in Betrieb ist. Durch eine solche Rückströmung von flüssigem Kältemittel im Ruhezustand der Klimaanlage könnten Schäden bei der Wiederinbetriebnahme auftreten.The advantage of the arrangement of the outlet opening 1e at a distance above the bottom of the modulator 2 for forming a reservoir for liquid grinding agent in the modulator is that a backflow of liquid refrigerant is prevented in the Kondenserabschnitt when the air conditioner is not in operation. By such a backflow of Liquid refrigerant in the idle state of the air conditioner could damage the re-commissioning occur.

Der Vorteil der Wechseleinheit liegt vor allem in dem möglichen Austausch der verschmutzungsgefährdeten Komponente Filter 5 und Steigrohr 4. Nach Austausch der Wechseleinheit kann der kältemittelseitige Druckabfall wieder verringert werden, der vor allem durch die Austrittsöffnung 1e am Kondensierabschnitt bedingt ist und durch eine Verschmutzung von Steigrohr 4 und Filter 5 verstärkt wird. Vor allem wenn der Filter 5 am oberen Ende des Steigrohrs 4 angeordnet wird, wie dies Fig. 2, 3a und 5 zeigen, kann es zu Ablagerungen im Bereich des Steigrohrs 4 kommen, die durch einen Austausch schnell beseitigt werden können.The advantage of the exchange unit is mainly in the possible replacement of the polluting component filter 5 and riser 4. After replacing the exchange unit of the refrigerant side pressure drop can be reduced again, which is mainly due to the outlet opening 1e on Kondensierabschnitt and by contamination of riser. 4 and filter 5 is amplified. Especially when the filter 5 is placed at the upper end of the riser 4, as this Fig. 2, 3a and 5 show, deposits can occur in the region of the riser pipe 4, which can be quickly eliminated by an exchange.

Fig. 5 zeigt ein praktisches Ausführungsbeispiel einer Wechseleinheit, wobei für gleiche bzw. entsprechende Bauteile die gleichen Bezugszeichen verwendet sind wie in den vorausgehenden Figuren. Bei dieser Ausführungsform ist über der Trennwand 2b ein käfigförmiges Filtergehäuse 50 angeordnet und zwischen Filtergehäuse und Trennwand 2b ein Dichtungsring 51 vorgesehen, der die Abdichtung zwischen oberem und unterem Abschnitt im Modulator gewährleistet. Das für den Austritt des Kältemittels seitlich offene Filtergehäuse 50 ist mit der Trennwand 2b und dem Steigrohr 4 fest verbunden. Bei dieser Bauform kann die Trennwand 2b einstückig mit dem Filtergehäuse 50 ausgebildet sein. In eine Umfangsnut zwischen Trennwand 2b und Filtergehäuse 50 kann der Dichtungsring 51 eingesetzt werden. Das Filtergehäuse 50 kann beispielsweise aus einer oberen Scheibe 50a und einer unteren Scheibe 50b aufgebaut sein, die durch Stege 50c miteinander verbunden sind. Fig. 5 shows a practical embodiment of a change unit, wherein the same reference numerals are used for the same or corresponding components as in the preceding figures. In this embodiment, a cage-shaped filter housing 50 is disposed above the partition 2b and between the filter housing and the partition wall 2b, a sealing ring 51 is provided, which ensures the seal between the upper and lower portion in the modulator. The laterally open filter housing 50 for the discharge of the refrigerant is fixedly connected to the partition wall 2 b and the riser pipe 4. In this design, the partition 2b may be formed integrally with the filter housing 50. In a circumferential groove between the partition wall 2b and the filter housing 50, the sealing ring 51 can be used. The filter housing 50 may be constructed, for example, of an upper disc 50a and a lower disc 50b, which are interconnected by webs 50c.

Das Filtergehäuse 50 kann mit einer Griffeinrichtung 2f versehen sein. Vorzugsweise werden auf der Oberseite des Filtergehäuses 50 Ausnehmungen vorgesehen, in die z. B. elastische Haken 61 eines Auszugswerkzeugs 60 unter Schnappwirkung eingesetzt werden könnten, wenn der Verschlussstopfen 6 am Modulator 2 entfernt ist. Die Haken hintergreifen einen Absatz in der Ausnehmung im Filtergehäuse, sodass die Wechseleinheit mittels des Werkzeugs 60 nach oben aus dem Modulator 2 herausgezogen werden kann.The filter housing 50 may be provided with a handle device 2f. Preferably, 50 recesses are provided on the top of the filter housing in the z. B. elastic hooks 61 of a pull-out tool 60 could be used under snap action, when the plug 6 is removed on the modulator 2. The hooks engage behind a shoulder in the recess in the filter housing, so that the exchange unit can be pulled out of the modulator 2 by means of the tool 60 upwards.

Fig. 6 zeigt ein Ausführungsbeispiel eines solchen Werkzeugs 60, dessen U-förmig angeordnete Haken 61 in radialer Richtung elastisch verformbar sind, um einen Absatz im Filtergehäuse 50 zum Herausziehen zu hintergreifen. Es kann aber auch ein in anderer Weise ausgebildetes Werkzeug vorgesehen werden. Fig. 6 shows an embodiment of such a tool 60, the U-shaped hooks 61 are elastically deformable in the radial direction to a paragraph in the filter housing 50 to pull out to pull out. But it can also be provided a trained in other ways tool.

Die Wechseleinheit umfasst zumindest die Trennwand 2b und den Behälter 7 mit Trocknungsmittel. Vorzugsweise ist auch das Steigrohr 4 mit Filter 5 in die Wechseleinheit integriert.The exchange unit comprises at least the partition 2b and the container 7 with desiccant. Preferably, the riser 4 is integrated with filter 5 in the exchange unit.

Es ist auch möglich, die Wechseleinheit zweiteilig auszubilden, sodass nach Abnehmen des Verschlussstopfens zunächst ein Teil, z. B. die Trennwand, aus dem Modulator herausgezogen wird und danach die weiteren Elemente aus dem Modulator entnommen werden.It is also possible to form the exchange unit in two parts, so that after removal of the sealing plug initially a part, for. As the partition, is pulled out of the modulator and then the other elements are removed from the modulator.

Es ist auch eine Ausführungsform möglich, bei der an der Unterseite des Modulators 2 ein Verschlussstopfen vorgesehen ist, sodass nach Lösen des Verschlussstopfens die Wechseleinheit nach unten aus dem Modulator herausgezogen werden kann. Hierbei kann beispielsweise das Steigrohr 4 als Griffeinrichtung dienen, mittels der die Trennwand aus dem Modulator herausgezogen werden kann. Es ist aber auch ein nach unten ragender Griffbügel als Griffeinrichtung möglich. Auch bei einer solchen Ausführungsform wird vorzugsweise ein Anschlag vorgesehen, an dem die Trennwand oder ein Element der Wechseleinheit beim Einsetzen zum Anliegen kommt.An embodiment is also possible in which a sealing plug is provided on the underside of the modulator 2, so that after the closure plug has been released, the exchange unit can be pulled down out of the modulator. Here, for example, the riser 4 serve as a handle device by means of the partition wall can be pulled out of the modulator. But it is also possible a downwardly projecting handle as a handle device. Even in such an embodiment, a stop is preferably provided, on which the partition wall or an element of the exchange unit comes to rest during insertion.

Claims (7)

  1. A condenser for an air conditioner, in particular for motor vehicles, comprising
    - a condensing portion (1b) and a super cooling part (1c) arranged over the condensing portion,
    - a tubular modulator (2) partitioned by a partition (2b) into a lower portion (2c) joined to the condensing portion (1b) and an upper portion (2d) joined to the super cooling portion (1c),
    - a standpipe (4) between the lower and the upper portions of the modulator and
    - a drying agent receptacle (7) below the partition (2b) in the lower portion (2c) of the modulator,
    - wherein the modulator (2) is provided with a sealing plug (6) and the partition (2b) together with the drying agent receptacle (7) is removable from the modulator after releasing the sealing plug, characterized in that
    - a receptacle (7) comprising the drying agent detachably is fixed to the standpipe (4),
    - wherein the fixing means is a hook (4a) fixed to the standpipe (4), and the receptacle (7) is hung on the hook (4a) fixed to the standpipe (4).
  2. The condenser according to claim 1, wherein the standpipe (4) is joined to the partition (2b).
  3. The condenser according to claim 1, wherein a handle means (2f) is joined to the partition (2b) by means of which, after removing the sealing plug (6) the partition (2b) can be withdrawn from the modulator (2).
  4. The condenser according to any previous claim, wherein at the partition (2b) a seal (20) is provided, which is removable from the modulator with the partition.
  5. The condenser according to any previous claim, wherein at the lower end of the standpipe (4) or in the upper portion (2d) of the modulator, a filter (5) is provided at the standpipe.
  6. The condenser according to any previous claim, wherein a filter housing (50) is fixed over the partition (2b).
  7. The condenser according to claim 6, wherein the filter housing (50) has on the upper side an engagement means for a tool (60) for withdrawing the receptacle unit formed by the filter housing (50), the partition (2b) and the standpipe (4).
EP06754089.8A 2005-06-02 2006-06-02 Condenser for an air conditioning system Revoked EP1893926B1 (en)

Applications Claiming Priority (2)

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DE102005025451A DE102005025451A1 (en) 2005-06-02 2005-06-02 Condenser for air conditioning
PCT/EP2006/005295 WO2006128720A1 (en) 2005-06-02 2006-06-02 Condenser for an air conditioning system

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EP1893926A1 EP1893926A1 (en) 2008-03-05
EP1893926B1 true EP1893926B1 (en) 2016-08-10

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EP (1) EP1893926B1 (en)
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DE102005025451A1 (en) 2006-12-07
KR101324070B1 (en) 2013-10-31
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EP1893926A1 (en) 2008-03-05
KR20080031662A (en) 2008-04-10
WO2006128720A1 (en) 2006-12-07
JP2008529877A (en) 2008-08-07
US7836725B2 (en) 2010-11-23

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