EP1437560B1 - Condensator with collection vessel and protective cap - Google Patents

Condensator with collection vessel and protective cap Download PDF

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Publication number
EP1437560B1
EP1437560B1 EP03290037A EP03290037A EP1437560B1 EP 1437560 B1 EP1437560 B1 EP 1437560B1 EP 03290037 A EP03290037 A EP 03290037A EP 03290037 A EP03290037 A EP 03290037A EP 1437560 B1 EP1437560 B1 EP 1437560B1
Authority
EP
European Patent Office
Prior art keywords
condenser
accordance
protective cap
sealing
face
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.)
Expired - Lifetime
Application number
EP03290037A
Other languages
German (de)
French (fr)
Other versions
EP1437560A1 (en
Inventor
Frederic Bellott
Fabrice Kaczmarek
Frederic Seibert-Sandt
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 France Hambach SAS
Original Assignee
Behr France Hambach SARL
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
Priority to AT03290037T priority Critical patent/ATE359488T1/en
Application filed by Behr France Hambach SARL filed Critical Behr France Hambach SARL
Priority to DE50307004T priority patent/DE50307004D1/en
Priority to EP03290037A priority patent/EP1437560B1/en
Priority to US10/541,553 priority patent/US7334607B2/en
Priority to AU2003294711A priority patent/AU2003294711A1/en
Priority to JP2004564190A priority patent/JP4354407B2/en
Priority to PCT/EP2003/012766 priority patent/WO2004061376A1/en
Publication of EP1437560A1 publication Critical patent/EP1437560A1/en
Application granted granted Critical
Publication of EP1437560B1 publication Critical patent/EP1437560B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/067—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits

Definitions

  • the invention relates to a capacitor with a collecting container and a protective cap.
  • the document DE-A-100 39260 which is considered to be the closest prior art, shows a condenser with a collecting container and a sealing stopper, the collecting container having a tube wall projecting substantially beyond the sealing stopper.
  • a collecting container with a detachable closure for a condenser of a motor vehicle air conditioning system has been disclosed.
  • the closure is designed as a piston-like plug and fixed and secured by a retaining ring relative to the tubular collecting container.
  • Such a capacitor is usually installed in the front region of the engine compartment of a motor vehicle and is therefore exposed to dirt and spray, which can lead to corrosion of the retaining ring and the sealing plug in the collecting container. The consequence would be that the plug can no longer or only very difficult forgentzwekken be removed from the reservoir. It can also come from the entry of water spray and especially in the winter of saline spray water to increased corrosion, so that it can lead to leaks.
  • the protective cap made of plastic, preferably a polyamide (PA), d. H. a sprayable, relatively strong plastic.
  • this plastic cap advantageously to the inside of the container towards a threaded pin or other Befest Trentshabilitkleit on, such as a plug-in connection, which is screwed or receivable into a corresponding internal thread or a corresponding receptacle in the closure plug of the container or in the container itself.
  • the cap has a sealing flange with a flat sealing surface which is pressed against the end face of the collecting container. Due to the contact pressure through the thread and the rigidity of the cap a high and lasting sealing effect is achieved. Also, a seal may be mounted in such a way that applies with a sealing lip against the inner wall of the container tube.
  • a conical hollow surface is provided between the outer sealing flange and the inner threaded pin, which allows a certain travel of the protective cap when screwing the threaded pin and thus causes a bias of the sealing flange. This increases the sealing effect.
  • a profiled handle or a profiled recess for engaging a handle is provided on the outside of the cap, which allows a screwing and screwing the cap, for example by hand.
  • the handle on both the outside and inside of an approximately star-shaped or hexagonal profile, so if necessary, also inside a corresponding profiled tool can be applied.
  • the protective cap with handle and threaded pin can be easily produced by plastic syringes.
  • the sealing flange has a peripheral, preferably wavy edge formed outwardly.
  • the sealing flange is reinforced in the region of the sealing surface, whereby the contact pressure and thus the sealing effect are increased.
  • a sealing plate made of rubber is attached to the plastic protective cap, which is preferably buttoned into corresponding holes of the sealing flange.
  • the sealing plate is thus captively connected to the plastic protective cap. Since the rubber sheet is softer and more flexible than the plastic of the protective cap, the sealing effect is improved, and small unevenness in the surface of the end surface of the collecting container are compensated by the rubber plate.
  • a circumferential sealing lip are molded, which applies to the inner wall of the collecting container and thus further improves the sealing effect.
  • FIG. 1 shows the upper part of a collecting container of a capacitor, as it was known from the aforementioned DE-A 100 39 260.
  • a collecting container 1 consists of an example, substantially circular cylindrical tube 2, which ends in an end face 3.
  • the tube 2 is sealed for example by a releasable sealing plug 4, which is axially fixed by a retaining ring 5 held in an annular groove 6.
  • the closure plug can be removed by loosening the retaining ring 5 from the sump 1, z. B. for reasons of repair or maintenance.
  • the closure plug 4 has a central projection 7, in which a threaded blind hole 8 is arranged.
  • a protective cap 9 On the end face 3 of the tube 2, a protective cap 9 is placed, which has a sealing flange 10, a threaded pin 11 and a handle 12.
  • the threaded pin 11 is screwed into the threaded blind hole 8, so that the sealing flange 10 rests with a bias on the end face 3 of the tube 2.
  • the protective cap 9 is integrally formed and injection molded from plastic, preferably from a polyamide.
  • the condenser expediently has a tube / rib block which is arranged between two collecting tubes.
  • the tube of the tube / rib block are soldered tight to the headers and form flow channels.
  • the serpentine type ⁇ strömungsverlauf cause by the tube / rib block.
  • several tubes can be connected in parallel per passage through the tube / rib block. Conveniently, the number of tubes varies per pass.
  • a collector is arranged with container through which the condensed refrigerant flows.
  • Fig. 2 shows an embodiment of a protective cap 20 in a first embodiment.
  • a circumferential sealing flange 21 has a flat sealing surface 22, which forms a sealing mating with the end face 3 (FIG.
  • the protective cap 20 has on its upper side a centrally arranged handle 23 and on its underside a threaded pin 24.
  • FIG. 2 shows a plan view of the protective cap 20 according to FIG. 2 with the peripheral sealing flange 21 and a star-shaped profiled cavity 26.
  • the outer contour of the handle 23 is characterized by two lines 23a extending parallel to one another; If necessary, a correspondingly profiled tool can be used in the star-shaped profiled cavity 26 in order to increase the tightening torque - or the breakaway torque - Radial outward shows the protective cap a reinforced annular portion 21a which is intended to increase the rigidity of the protective cap 12.
  • the annular portion 21a may advantageously have a non-uniform height, as shown in Fig. 2. In this case, the regions of greatest increase are designated 21b.
  • Fig. 2b shows the protective cap 20 in a section in the plane IIb-IIb in Fig. 2a.
  • a conical hollow surface 25 is arranged between the outer, annular sealing surface 22 and the coaxially arranged threaded pin 24, a conical hollow surface 25 is arranged.
  • the handle 23 has the profiled cavity 26 which is formed like a blind hole. From the sectional view it is clear that the protective cap 20 can be sprayed as a one-piece plastic part. Between the sealing surface radially outward and the pin is a region 25 can be seen, which is withdrawn relative to the sealing surface. Thereby, the sealing surface can be formed at least slightly resilient in the axial direction.
  • FIG. 2 c shows an isometric view of the protective cap 20 with a view of the sealing flange 21 and the hand or rotary handle 23 for the purpose of rounding off.
  • FIG. 3 shows a further embodiment of a protective cap 30 with a raised edge 31, which has a wavy contour 32.
  • this protective cap 30 also has a rotary handle 33 and a coaxially arranged threaded pin 34.
  • FIG. 3a shows a plan view of the protective cap 30 with peripheral edge 31 and circumferentially distributed nubs 37 of the sealing plate 36.
  • the rotary handle 33 corresponds in its outer contour 33a and the cavity 33b to that of the previous embodiment according to FIG.
  • Fig. 3b shows a section through the protective cap 30 in the plane IIIb-IIIb in Fig. 3a.
  • the erected edge 31 forms with the sealing flange 35 approximately a right angle, whereby the resistance moment of the flange 35 is increased.
  • an annular sealing plate 36 is connected, which has mushroom-like knobs 37, which are inserted into corresponding holes 38 in the sealing flange 35 or "buttoned".
  • the sealing plate 36 which consists of rubber, captive and tightly connected to the cap 30.
  • the rubber material of the sealing plate 36 is softer than the plastic or polyamide material of the protective cap 30.
  • the sealing plate 36 rests upon insertion of the protective cap 30 into the collecting container 1 on its end face 3 (see FIG.
  • the sealing surface is sprayed with the sealing flange as a 2 component element.
  • FIG. 3 c shows an isometric view of the protective cap 30 with a view of the peripheral edge 31 and the rotary handle 33 to complete it.
  • FIG. 4 shows a protective cap according to FIG. 1, wherein the sealing surface 50 is designed as a sealing ring 51, which is mounted together with the protective cap.
  • the sealing ring has a central opening for receiving the pin 7.
  • FIG. 5 shows a further protective cap according to the invention according to FIG. 1, wherein the sealing ring 60 has a first sealing surface 61 and a second sealing surface 62.
  • the sealing surface 61 is formed substantially at the end face and is supported on the end face of the tube of the collecting container.
  • the sealing surface 62 is formed substantially cylindrical shell-shaped and is supported on the inner circumferential surface of the tube of the collecting container.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Closures For Containers (AREA)
  • Pens And Brushes (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Buffer Packaging (AREA)

Abstract

The protective cap (9), of a plastics material, covers the closure plug (4) at the collection vessel (1) of a condenser in a vehicle air conditioning system, where the vessel has a tubular wall (2) projecting over the plug. The protective cap seals the tube with a sealing surface (10), together with a threading (11) and a hand grip (12). The cap has a ring surface which lies against the end ring surface of the tube wall or its inner mantle surface, to seal the vessel.

Description

Die Erfindung betrifft einen Kondensator mit einem Sammelbehälter sowie eine Schutzkappe.The invention relates to a capacitor with a collecting container and a protective cap.

Die Schrift DE-A- 100 39260, die als nächstliegender Stand der Technik angesehen wird, zeigt einen Kondensator mit einem Sammelbehälter und einem Verschlussstopfen, wobei der Sammelbehälter eine im wesentlichen über den Verschlussstopfen hinausstehende Rohrwand aufweist.The document DE-A-100 39260, which is considered to be the closest prior art, shows a condenser with a collecting container and a sealing stopper, the collecting container having a tube wall projecting substantially beyond the sealing stopper.

Durch die DE-A 100 39 260 wurde ein Sammelbehälter mit einem lösbaren Verschluss für einen Kondensator einer Kraftfahrzeugklimaanlage bekannt. Der Verschluss ist als kolbenartiger Stopfen ausgebildet und durch einen Sicherungsring gegenüber dem rohrförmigen Sammelbehälter festgelegt und gesichert. Ein derartiger Kondensator wird in der Regel im Frontbereich des Motorraumes eines Kraftfahrzeuges eingebaut und ist daher Schmutz und Spritzwasser ausgesetzt, was zu Korrosion des Sicherungsringes und des Verschlussstopfens im Sammelbehälter führen kann. Die Folge wäre, dass der Verschlussstopfen nicht mehr oder nur sehr schwer zu Reparaturzwekken aus dem Sammelbehälter herausgenommen werden kann. Auch kann es durch den Eintritt von Spritzwasser und insbesondere im Winter von salzhaltigem Spritzwasser zu verstärkter Korrosion kommen, so daß es zu Undichtigkeiten kommen kann.From DE-A 100 39 260 a collecting container with a detachable closure for a condenser of a motor vehicle air conditioning system has been disclosed. The closure is designed as a piston-like plug and fixed and secured by a retaining ring relative to the tubular collecting container. Such a capacitor is usually installed in the front region of the engine compartment of a motor vehicle and is therefore exposed to dirt and spray, which can lead to corrosion of the retaining ring and the sealing plug in the collecting container. The consequence would be that the plug can no longer or only very difficult for Reparaturzwekken be removed from the reservoir. It can also come from the entry of water spray and especially in the winter of saline spray water to increased corrosion, so that it can lead to leaks.

Es ist daher Aufgabe der vorliegenden Erfindung, einen Kondensator und eine Schutzkappe zu schaffen, die eine sichere und nachhaltige Abdichtung des Sammelbehälters gegen Schmutz und Feuchtigkeit gewährleistet.It is therefore an object of the present invention to provide a capacitor and a protective cap, which ensures a secure and sustainable sealing of the collecting container against dirt and moisture.

Die Lösung dieser Aufgabe ergibt sich aus den Merkmalen des Patentanspruches 1.The solution to this problem arises from the features of claim 1.

Vorteilhaft ist die Schutzkappe aus Kunststoff, vorzugsweise einem Polyamid (PA) hergestellt, d. h. einem spritzfähigen, relativ festen Kunststoff. Darüber hinaus weist diese Kunststoffkappe vorteilhaft zur Innenseite des Behälters hin einen Gewindezapfen oder eine andere Befestigungsmöglichkleit auf, wie eine Steckverbindung auf, der in ein entsprechendes Innengewinde oder eine entsprechende Aufnahme im Verschlussstopfen des Behälters oder in den Behälter selbst einschraubbar oder aufnehmbar ist. Hiermit wird der Vorteil erreicht, dass die notwendige Dichtkraft zwischen Schutzkappe und Behalter, d. h. eine hohe Dichtwirkung bei gleichzeitiger Unverlierbarkeit der Schutzkappe auf Dauer gegeben sind.Advantageously, the protective cap made of plastic, preferably a polyamide (PA), d. H. a sprayable, relatively strong plastic. In addition, this plastic cap advantageously to the inside of the container towards a threaded pin or other Befestigungsmöglichkleit on, such as a plug-in connection, which is screwed or receivable into a corresponding internal thread or a corresponding receptacle in the closure plug of the container or in the container itself. Hereby, the advantage is achieved that the necessary sealing force between the protective cap and container, d. H. a high sealing effect with simultaneous captivation of the cap are given in the long term.

Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen. So weist die Schutzkappe einen Dichtflansch mit einer ebenen Dichtfläche auf, die gegen die Stirnfläche des Sammelbehälters gepresst wird. Aufgrund der Anpressung durch das Gewinde und der Steifigkeit der Schutzkappe wird eine hohe und dauerhafte Dichtwirkung erzielt. Auch kann eine Dichtung derart angebracht sein, die sich mit einer Dichtlippe gegen die innenwandung des Behälterrohres anlegt.Advantageous embodiments of the invention will become apparent from the dependent claims. Thus, the cap has a sealing flange with a flat sealing surface which is pressed against the end face of the collecting container. Due to the contact pressure through the thread and the rigidity of the cap a high and lasting sealing effect is achieved. Also, a seal may be mounted in such a way that applies with a sealing lip against the inner wall of the container tube.

In weiterer Ausgestaltung der Erfindung ist zwischen dem äußeren Dichtflansch und dem inneren Gewindezapfen eine konische Hohlfläche vorgesehen, die einen gewissen Federweg der Schutzkappe beim Einschrauben des Gewindezapfens erlaubt und damit eine Vorspannung des Dichtflansches bewirkt. Dies erhöht die Dichtwirkung.In a further embodiment of the invention, a conical hollow surface is provided between the outer sealing flange and the inner threaded pin, which allows a certain travel of the protective cap when screwing the threaded pin and thus causes a bias of the sealing flange. This increases the sealing effect.

Nach einer vorteilhaften Weiterbildung der Erfindung ist auf der Außenseite der Schutzkappe ein profilierter Handgriff oder eine profilierte Vertiefung zum Eingriff eines Handgriffes vorgesehen, der ein Ein- und Festschrauben der Schutzkappe beispielsweise per Hand erlaubt. Vorteilhafterweise weist der Handgriff sowohl außen als auch innen ein etwa sternförmiges oder sechseckiges Profil auf, sodass erforderlichenfalls auch innen ein entsprechend profiliertes Werkzeug angesetzt werden kann. Die Schutzkappe mit Handgriff und Gewindezapfen lässt sich einfach durch Kunststoffspritzen herstellen.According to an advantageous embodiment of the invention, a profiled handle or a profiled recess for engaging a handle is provided on the outside of the cap, which allows a screwing and screwing the cap, for example by hand. Advantageously, the handle on both the outside and inside of an approximately star-shaped or hexagonal profile, so if necessary, also inside a corresponding profiled tool can be applied. The protective cap with handle and threaded pin can be easily produced by plastic syringes.

Nach einer weiteren vorteilhaften Ausgestaltung der Erfindung weist der Dichtflansch einen nach außen aufgestellten umlaufenden, vorzugsweise wellenförmig ausgebildeten Rand auf. Dadurch wird der Dichtflansch im Bereich der Dichtfläche verstärkt, wodurch die Anpressung und damit die Dichtwirkung erhöht werden.According to a further advantageous embodiment of the invention, the sealing flange has a peripheral, preferably wavy edge formed outwardly. As a result, the sealing flange is reinforced in the region of the sealing surface, whereby the contact pressure and thus the sealing effect are increased.

In weiterer Ausgestaltung der Erfindung ist an der Schutzkappe aus Kunststoff eine Dichtungsplatte aus Gummi befestigt, die vorzugsweise in entsprechende Löcher des Dichtflansches eingeknöpft wird. Die Dichtungsplatte ist somit unverlierbar mit der Kunststoffschutzkappe verbunden. Da die Gummiplatte weicher und nachgiebiger als der Kunststoff der Schutzkappe ist, wird die Dichtwirkung verbessert, und kleine Unebenheiten in der Oberfläche der Stirnfläche des Sammelbehälters werden durch die Gummiplatte ausgeglichen.In a further embodiment of the invention, a sealing plate made of rubber is attached to the plastic protective cap, which is preferably buttoned into corresponding holes of the sealing flange. The sealing plate is thus captively connected to the plastic protective cap. Since the rubber sheet is softer and more flexible than the plastic of the protective cap, the sealing effect is improved, and small unevenness in the surface of the end surface of the collecting container are compensated by the rubber plate.

Schließlich kann in weiterer Ausgestaltung der Erfindung an die Kunststoffkappe eine umlaufende Dichtlippe angespritzt werden, die sich an die Innenwand des Sammelbehälters anlegt und somit die Dichtwirkung noch weiter verbessert.Finally, in a further embodiment of the invention to the plastic cap, a circumferential sealing lip are molded, which applies to the inner wall of the collecting container and thus further improves the sealing effect.

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im Folgenden näher beschrieben. Es zeigen

Fig. 1
eine erfindungsgemäße Schutzkappe auf einem Sammelbehälter,
Fig. 2
eine erste Ausführungsform der Schutzkappe,
Fig. 2a
eine Draufsicht auf die Schutzkappe gemäß Fig. 2,
Fig. 2b
einen Längsschnitt durch die Schutzkappe gemäß Schnittebene IIb-IIb in Fig. 2a,
Fig. 2c
eine perspektivische Ansicht der Schutzkappe gemäß Fig. 2,
Fig. 3
eine zweite Ausführungsform der Schutzkappe mit zusätzlicher Gummidichtung,
Fig. 3a
eine Draufsicht auf die Schutzkappe gemäß Fig. 3,
Fig. 3b
einen Längsschnitt durch die Schutzkappe gemäß Schnittebene IIIb-IIIb in Fig. 3a,
Fig. 3c
eine perspektivische Ansicht der Schutzkappe gemäß Fig. 3,
Fig. 4
eine erfindungsgemäße Schutzkappe auf einem Sammel-Behälter und
Fig. 5
eine erfindungsgemäße Schutzkappe auf einem Sammel-Behälter.
Embodiments of the invention are illustrated in the drawings and will be described in more detail below. Show it
Fig. 1
a protective cap according to the invention on a collecting container,
Fig. 2
a first embodiment of the protective cap,
Fig. 2a
a top view of the protective cap of FIG. 2,
Fig. 2b
a longitudinal section through the protective cap according to section plane IIb-IIb in Fig. 2a,
Fig. 2c
a perspective view of the protective cap according to FIG. 2,
Fig. 3
a second embodiment of the protective cap with additional Rubber seal,
Fig. 3a
a top view of the protective cap according to FIG. 3,
Fig. 3b
a longitudinal section through the protective cap according to sectional plane IIIb-IIIb in Fig. 3a,
Fig. 3c
3 is a perspective view of the protective cap according to FIG. 3,
Fig. 4
a protective cap according to the invention on a collecting container and
Fig. 5
a protective cap according to the invention on a collecting container.

Fig. 1 zeigt den oberen Teil eines Sammelbehälters eines Kondensators, wie er durch die eingangs genannte DE-A 100 39 260 bekannt wurde. Ein Sammelbehälter 1 besteht aus einem beispielsweise im wesentlichen kreiszylindrischen Rohr 2, welches in einer Stirnfläche 3 endet. Das Rohr 2 ist beispielsweise durch einen lösbaren Verschlussstopfen 4 abgedichtet, der durch einen in einer Ringnut 6 gehaltenen Sicherungsring 5 axial festgelegt ist. Wie in der genannten Offenlegungsschrift ausgeführt ist, kann der Verschlussstopfen durch Lösen des Sicherungsringes 5 aus dem Sammelbehälter 1 entnommen werden, z. B. aus Gründen der Reparatur oder Wartung. Der Verschlussstopfen 4 weist einen zentralen Ansatz 7 auf, in welchem ein Gewindesackloch 8 angeordnet ist. Auf die Stirnfläche 3 des Rohres 2 ist eine Schutzkappe 9 aufgesetzt, die einen Dichtflansch 10, einen Gewindezapfen 11 und einen Handgriff 12 aufweist. Der Gewindezapfen 11 ist in das Gewindesackloch 8 eingeschraubt, sodass der Dichtflansch 10 mit einer Vorspannung auf der Stirnfläche 3 des Rohres 2 aufliegt. Die Schutzkappe 9 ist einstückig ausgebildet und aus Kunststoff gespritzt, vorzugsweise aus einem Polyamid.Fig. 1 shows the upper part of a collecting container of a capacitor, as it was known from the aforementioned DE-A 100 39 260. A collecting container 1 consists of an example, substantially circular cylindrical tube 2, which ends in an end face 3. The tube 2 is sealed for example by a releasable sealing plug 4, which is axially fixed by a retaining ring 5 held in an annular groove 6. As stated in the cited patent application, the closure plug can be removed by loosening the retaining ring 5 from the sump 1, z. B. for reasons of repair or maintenance. The closure plug 4 has a central projection 7, in which a threaded blind hole 8 is arranged. On the end face 3 of the tube 2, a protective cap 9 is placed, which has a sealing flange 10, a threaded pin 11 and a handle 12. The threaded pin 11 is screwed into the threaded blind hole 8, so that the sealing flange 10 rests with a bias on the end face 3 of the tube 2. The protective cap 9 is integrally formed and injection molded from plastic, preferably from a polyamide.

Der Kondensator weist zweckmäßigerweise einen Rohr-/Rippenblock auf, der zwischen zwei Sammelrohren angeordnet ist. Die Rohr des Rohr-/Rippenblocks sind dabei mit den Sammelrohren dicht verlötet und bilden Strömungskanäle. Je nach Ausführungsform des Kondensators sind in den Sammelrohren Trennwände angeordnet, die einen Serpentinenartigen Äströmungsverlauf durch den Rohr-/Rippenblock bewirken. Dabei können pro Durchgang durch den Rohr-/Rippenblock mehrere Rohre parallel geschaltet sein. Zweckmäßiger Weise variiert die Anzahl der Rohre pro Durchgang. Neben eine der Sammelrohre ist ein Sammler mit Behälter angeordnet, durch welchen das kondensierte Kältemittel strömt.The condenser expediently has a tube / rib block which is arranged between two collecting tubes. The tube of the tube / rib block are soldered tight to the headers and form flow channels. Depending on the embodiment of the condenser partitions are arranged in the headers, the serpentine type Äströmungsverlauf cause by the tube / rib block. In this case, several tubes can be connected in parallel per passage through the tube / rib block. Conveniently, the number of tubes varies per pass. In addition to one of the headers, a collector is arranged with container through which the condensed refrigerant flows.

Fig. 2 zeigt ein Ausführungsbeispiel einer Schutzkappe 20 in einer ersten Ausführungsform. Ein umlaufender Dichtflansch 21 weist eine ebene Dichtfläche 22 auf, die mit der Stirnfläche 3 (Fig. 1) eine Dichtpaarung bildet. Die Schutzkappe 20 weist auf ihrer Oberseite einen zentral angeordneten Handgriff 23 und auf ihrer Unterseite einen Gewindezapfen 24 auf.Fig. 2 shows an embodiment of a protective cap 20 in a first embodiment. A circumferential sealing flange 21 has a flat sealing surface 22, which forms a sealing mating with the end face 3 (FIG. The protective cap 20 has on its upper side a centrally arranged handle 23 and on its underside a threaded pin 24.

Fig. 2a zeigt eine Draufsicht auf die Schutzkappe 20 gemäß Fig. 2 mit dem umlaufenden Dichtflansch 21 und einem sternförmig profilierten Hohlraum 26. Die Außenkontur des Handgriffes 23 ist durch zwei parallel zueinander verlaufende Linien 23a gekennzeichnet; es ergibt sich somit ein griffiger" Umfang, der das Ein- und Ausschrauben von Hand erleichtert. Erforderlichenfalls kann in den sternförmig profilierten Hohlraum 26 ein entsprechend profiliertes Werkzeug eingesetzt werden, um das Anzugsmoment - oder das Losbrechmoment - zu erhöhen. Radial außen zeigt die Schutzkappe einen verstärkten ringförmigen Bereich 21a, welcher die Steifigkeit der Schutzkappe erhöhen soll. Der Ringbereich 21a kann vorteilhafter Weise eine nicht gleichmäßige Höhe aufweisen, was in Fig. 2 ersichtliche ist. Dabei sind die Bereiche größter Erhöhung mit 21b bezeichnet.2 shows a plan view of the protective cap 20 according to FIG. 2 with the peripheral sealing flange 21 and a star-shaped profiled cavity 26. The outer contour of the handle 23 is characterized by two lines 23a extending parallel to one another; If necessary, a correspondingly profiled tool can be used in the star-shaped profiled cavity 26 in order to increase the tightening torque - or the breakaway torque - Radial outward shows the protective cap a reinforced annular portion 21a which is intended to increase the rigidity of the protective cap 12. The annular portion 21a may advantageously have a non-uniform height, as shown in Fig. 2. In this case, the regions of greatest increase are designated 21b.

Fig. 2b zeigt die Schutzkappe 20 in einem Schnitt in der Ebene IIb-IIb in Fig. 2a. Zwischen der äußeren, kreisringförmigen Dichtfläche 22 und dem koaxial angeordneten Gewindezapfen 24 ist eine konische Hohlfläche 25 angeordnet. Der Handgriff 23 weist den profilierten Hohlraum 26 auf, der sacklochartig ausgebildet ist. Aus der Schnittdarstellung wird deutlich, dass die Schutzkappe 20 als einstückiges Kunststoffteil spritzbar ist. Zwischen dert Dichtfläche radial außen und dem Zapfen ist ein Bereich 25 zu erkennen, der gegenüber der Dichtfläche zurückgenommen ist. Dadurch kann die Dichtfläche zumindest geringfügig in axialer Richtung federnd ausgebildet werden.Fig. 2b shows the protective cap 20 in a section in the plane IIb-IIb in Fig. 2a. Between the outer, annular sealing surface 22 and the coaxially arranged threaded pin 24, a conical hollow surface 25 is arranged. The handle 23 has the profiled cavity 26 which is formed like a blind hole. From the sectional view it is clear that the protective cap 20 can be sprayed as a one-piece plastic part. Between the sealing surface radially outward and the pin is a region 25 can be seen, which is withdrawn relative to the sealing surface. Thereby, the sealing surface can be formed at least slightly resilient in the axial direction.

Fig. 2c zeigt zur Abrundung eine isometrische Darstellung der Schutzkappe 20 mit Blick auf den Dichtflansch 21 und den Hand- bzw. Drehgriff 23.FIG. 2 c shows an isometric view of the protective cap 20 with a view of the sealing flange 21 and the hand or rotary handle 23 for the purpose of rounding off.

Fig. 3 zeigt eine weitere Ausführungsform einer Schutzkappe 30 mit einem aufgestellten Rand 31, der eine wellenförmige Kontur 32 aufweist. Wie im vorherigen Ausführungsbeispiel gemäß Fig. 2 weist auch diese Schutzkappe 30 einen Drehgriff 33 und einen koaxial angeordneten Gewindezapfen 34 auf.FIG. 3 shows a further embodiment of a protective cap 30 with a raised edge 31, which has a wavy contour 32. As in the previous exemplary embodiment according to FIG. 2, this protective cap 30 also has a rotary handle 33 and a coaxially arranged threaded pin 34.

Fig. 3a zeigt eine Draufsicht auf die Schutzkappe 30 mit umlaufendem Rand 31 und auf den Umfang verteilten Noppen 37 der Dichtplatte 36. Der Drehgriff 33 entspricht in seiner Außenkontur 33a und dem Hohlraum 33b dem der vorherigen Ausführung gemäß Fig. 2.3a shows a plan view of the protective cap 30 with peripheral edge 31 and circumferentially distributed nubs 37 of the sealing plate 36. The rotary handle 33 corresponds in its outer contour 33a and the cavity 33b to that of the previous embodiment according to FIG.

Fig. 3b zeigt einen Schnitt durch die Schutzkappe 30 in der Ebene IIIb-IIIb in Fig. 3a. Der aufgestellte Rand 31 bildet mit dem Dichtflansch 35 ungefähr einen rechten Winkel, wodurch das Widerstandsmoment des Flansches 35 erhöht wird. Mit dem Dichtflansch 35 ist eine kreisringförmige Dichtplatte 36 verbunden, die pilzartige Noppen 37 aufweist, welche in entsprechende Bohrungen 38 im Dichtflansch 35 eingesetzt bzw. "eingeknöpft" sind. Damit ist die Dichtplatte 36, die aus Gummi besteht, unverlierbar und dicht mit der Schutzkappe 30 verbunden. Der Gummiwerkstoff der Dichtplatte 36 ist weicher als der Kunststoff- bzw. Polyamidwerkstoff der Schutzkappe 30. Die Dichtplatte 36 liegt beim Einsetzen der Schutzkappe 30 in den Sammelbehälter 1 auf dessen Stirnfläche 3 (vgl. Fig. 1) auf.Fig. 3b shows a section through the protective cap 30 in the plane IIIb-IIIb in Fig. 3a. The erected edge 31 forms with the sealing flange 35 approximately a right angle, whereby the resistance moment of the flange 35 is increased. With the sealing flange 35, an annular sealing plate 36 is connected, which has mushroom-like knobs 37, which are inserted into corresponding holes 38 in the sealing flange 35 or "buttoned". Thus, the sealing plate 36, which consists of rubber, captive and tightly connected to the cap 30. The rubber material of the sealing plate 36 is softer than the plastic or polyamide material of the protective cap 30. The sealing plate 36 rests upon insertion of the protective cap 30 into the collecting container 1 on its end face 3 (see FIG.

Vorteilhaft wird die Dichtfläche mit dem Dichtflansch als 2 Komponentenelement gespritzt.Advantageously, the sealing surface is sprayed with the sealing flange as a 2 component element.

Fig. 3c zeigt zur Vervollständigung eine isometrische Darstellung der Schutzkappe 30 mit Blick auf den umlaufenden Rand 31 und den Drehgriff 33.FIG. 3 c shows an isometric view of the protective cap 30 with a view of the peripheral edge 31 and the rotary handle 33 to complete it.

Die Figur 4 zeigt eine Schutzkappe gemäß Figur 1, wobei die Dichtfläche 50 als Dichtring 51 ausgebildet ist, der mit der Schutzkappe zusammen montiert ist. Dabei weist der Dichtring eine zentrale Öffnung aus zur Aufnahme des Zapfens 7. Die Figur 5 zeigt eine weitere erfindungsgemäße Schutzkappe gemäß Figur 1, wobei der Dichtring 60 eine erste Dichtfläche 61 und eine zweite Dichtfläche 62 aufweist. Die Dichtfläche 61 ist im wesentlichen stirnseitig ausgebildet und stützt sich an der Stirnfläche des Rohres des Sammelbehälters ab. Die Dichtfläche 62 ist im wesentlichen zylindermantelförmig ausgebildet und stützt sich an der Innenmantelfläche des Rohres des Sammelbehälters ab.FIG. 4 shows a protective cap according to FIG. 1, wherein the sealing surface 50 is designed as a sealing ring 51, which is mounted together with the protective cap. In this case, the sealing ring has a central opening for receiving the pin 7. FIG. 5 shows a further protective cap according to the invention according to FIG. 1, wherein the sealing ring 60 has a first sealing surface 61 and a second sealing surface 62. The sealing surface 61 is formed substantially at the end face and is supported on the end face of the tube of the collecting container. The sealing surface 62 is formed substantially cylindrical shell-shaped and is supported on the inner circumferential surface of the tube of the collecting container.

Gemäß dem Ausführungsbeispiel kann es auch zweckmäßig sein, wenn lediglich die Dichtfläche 62 vorhanden ist, um den Sammelbehälter abzudichten. According to the embodiment, it may also be expedient if only the sealing surface 62 is present in order to seal the collecting container.

Claims (23)

  1. A condenser having a collector vessel and a protective cap for sealing the front face of a collection vessel forming part of the condenser which can be closed by means of a stopper (4), the collection vessel (1) having a tube wall (2) which projects essentially beyond the stopper and the protective cap (9, 20, 30) being made of a plastic material and being positioned in such a manner that it seals the collector vessel in the area of the end of the tube wall which projects beyond the stopper.
  2. A condenser in accordance with claim 1,
    characterised in that
    the protective cap has an essentially flat ring face which lies against the front ring face of the tube wall and seals the collector vessel.
  3. A condenser in accordance with claim 1,
    characterised in that
    the protective cap has a ring face which lies against the circumferential inner face of the tube wall and seals the collector vessel.
  4. A condenser in accordance with one of the preceding claims,
    characterised in that
    the protective cap has a retaining means which co-operates with a retaining means on the stopper or the tube wall and is connected thereto.
  5. A condenser in accordance with one of the preceding claims,
    characterised in that
    the protective cap has a pin which engages in a receiver in the stopper or the tube wall.
  6. A condenser in accordance with one of the preceding claims,
    characterised in that
    the protective cap has a receiver in which a pin on the stopper or the tube wall engages.
  7. A condenser in accordance with claim 5 or 6,
    characterised in that
    the pin has a thread, an external thread for example, which engages in an internal thread in the receiver.
  8. A condenser in accordance with one of the preceding claims,
    characterised in that
    the plastic is a polyamide (PA) which is reinforced as required by the addition of fibres.
  9. A condenser in accordance with one of the preceding claims,
    characterised by
    a circumferential sealing flange (10, 21) with a flat sealing face which lies against the front face (3) of the tube wall (2).
  10. A condenser in accordance with one of the preceding claims,
    characterised by
    a circumferential sealing flange (10, 21) with a cylindrical sealing face which lies against the inner face of the tube wall (2).
  11. A condenser in accordance with one of the preceding claims,
    characterised in that
    the sealing face and the protective cap are designed as two parts.
  12. A condenser in accordance with claim 11,
    characterised in that
    the sealing face is connected to the protective cap as an annular element.
  13. A condenser in accordance with claim 11,
    characterised in that
    the sealing face is designed in one piece with the protective cap as an annular element.
  14. A condenser in accordance with one of the preceding claims,
    characterised in that
    the sealing face is made of an elastic material such as an elastomer.
  15. A condenser in accordance with one of the preceding claims,
    characterised in that
    the sealing face is tensioned against the front face (3) of the tube wall (2) or the inner face of the tube wall by the pin.
  16. A condenser in accordance with one of the preceding claims,
    characterised in that
    positioned between the threaded pin (24) and the sealing face (22) is a circular, ring-shaped, conical concave face (25).
  17. A condenser in accordance with one of the preceding claims,
    characterised by
    a centrally positioned profiled handle (23, 33).
  18. A condenser in accordance with claim 17,
    characterised in that
    the handle (23, 33) is hollow in design and has a blind hole (26, 33b) open to the outside with an approximately star-shaped cross section.
  19. A condenser in accordance with one of claims 1 to 18,
    characterised in that
    the sealing flange (35) has a proud, circumferential border (31).
  20. A condenser in particular in accordance with claim 19,
    characterised in that
    the border (31) has an upper edge (32) with a wavy contour.
  21. A condenser in accordance with one of the preceding claims,
    characterised in that
    positioned on the sealing flange (35) is a rubber sealing plate (36) which is connected to the protective cap (30).
  22. A condenser in accordance with claim 21,
    characterised in that
    the sealing plate (36) is pushed or injected into holes (38) in the flange (35) by means of dimples (37).
  23. A condenser in accordance with one of the preceding claims,
    characterised in that
    a peripheral sealing lip is injected onto the sealing flange.
EP03290037A 2003-01-07 2003-01-07 Condensator with collection vessel and protective cap Expired - Lifetime EP1437560B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE50307004T DE50307004D1 (en) 2003-01-07 2003-01-07 Capacitor with reservoir and protective cap
EP03290037A EP1437560B1 (en) 2003-01-07 2003-01-07 Condensator with collection vessel and protective cap
AT03290037T ATE359488T1 (en) 2003-01-07 2003-01-07 CAPACITOR WITH COLLECTION TANK AND PROTECTIVE CAP
AU2003294711A AU2003294711A1 (en) 2003-01-07 2003-11-14 Protective cap for a sealing stopper on a container for a capacitor
US10/541,553 US7334607B2 (en) 2003-01-07 2003-11-14 Protective cap for a sealing stopper in a collecting vessel of a condenser
JP2004564190A JP4354407B2 (en) 2003-01-07 2003-11-14 Protective cap for closure plug in condenser collection container
PCT/EP2003/012766 WO2004061376A1 (en) 2003-01-07 2003-11-14 Protective cap for a sealing stopper on a container for a capacitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03290037A EP1437560B1 (en) 2003-01-07 2003-01-07 Condensator with collection vessel and protective cap

Publications (2)

Publication Number Publication Date
EP1437560A1 EP1437560A1 (en) 2004-07-14
EP1437560B1 true EP1437560B1 (en) 2007-04-11

Family

ID=32479962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03290037A Expired - Lifetime EP1437560B1 (en) 2003-01-07 2003-01-07 Condensator with collection vessel and protective cap

Country Status (7)

Country Link
US (1) US7334607B2 (en)
EP (1) EP1437560B1 (en)
JP (1) JP4354407B2 (en)
AT (1) ATE359488T1 (en)
AU (1) AU2003294711A1 (en)
DE (1) DE50307004D1 (en)
WO (1) WO2004061376A1 (en)

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Also Published As

Publication number Publication date
AU2003294711A1 (en) 2004-07-29
EP1437560A1 (en) 2004-07-14
DE50307004D1 (en) 2007-05-24
US20060254659A1 (en) 2006-11-16
JP4354407B2 (en) 2009-10-28
US7334607B2 (en) 2008-02-26
JP2006513389A (en) 2006-04-20
ATE359488T1 (en) 2007-05-15
WO2004061376A1 (en) 2004-07-22

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