EP2207962B1 - Coolant compressor - Google Patents

Coolant compressor Download PDF

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Publication number
EP2207962B1
EP2207962B1 EP20080804349 EP08804349A EP2207962B1 EP 2207962 B1 EP2207962 B1 EP 2207962B1 EP 20080804349 EP20080804349 EP 20080804349 EP 08804349 A EP08804349 A EP 08804349A EP 2207962 B1 EP2207962 B1 EP 2207962B1
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EP
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Prior art keywords
pipe
connector
pressure
pressure pipe
refrigerant
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EP20080804349
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German (de)
French (fr)
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EP2207962A1 (en
Inventor
Herwig Kulmer
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Secop Austria GmbH
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Secop Austria GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/123—Fluid connections

Definitions

  • the invention relates to a refrigerant compressor, which has a hermetically sealed compressor housing, inside which a refrigerant-compressing piston-cylinder unit operates, which draws refrigerant via a suction pipe from outside the compressor housing and the refrigerant under compression via a plastic one manufactured pressure tube and a connecting tube made of metal formed pressure line in the direction of a arranged outside the compressor housing condenser, according to the preamble of claim 1.
  • the refrigeration process with zeotropic gases as such has long been known.
  • the refrigerant is thereby heated by energy absorption from the space to be cooled in the evaporator and finally superheated, which leads to evaporation and compressed by a piston-cylinder unit of the refrigerant compressor to a higher Druckniveäu, where it emits heat through a capacitor and via a throttle, in which a pressure reduction and the cooling of the refrigerant takes place, is transported back into the evaporator.
  • Such refrigerant compressors are mainly used in refrigerators or shelves. Accordingly high is the annually produced quantity. Any technical improvement that is made to a refrigerant compressor and reduces production costs, for example, has an enormous savings potential extrapolated to the refrigerant compressors used worldwide.
  • Refrigerant compressors are also sources of noise, which can sometimes be annoying during operation of the refrigerant compressor.
  • the vibrations generated by the operation of the piston-cylinder unit and its drive motor also load all parts of the refrigerant compressor which are exposed to these vibrations.
  • the pressure tube must have a certain mobility in order to absorb the vibrations exerted by the piston-cylinder unit can.
  • Conventional pressure pipes are made of metallic materials with high moduli of elasticity. In order to meet the requirements with respect to vibration transmission and fatigue strength, the pressure pipes are therefore designed to be correspondingly long and arranged bent several times inside the compressor housing. Pressure pipes of this type are therefore also called serpentines.
  • the DE 31 02 576 A1 discloses a pipe joint wherein a first pipe is insertable into an enlarged end portion of a second pipe.
  • the outer casing of the first tube is provided with two juxtaposed, film-like coatings, namely with a silicone rubber layer and an adhesive layer. Both coatings have a layer thickness between 0.5 and 0.75 mm. Because of this relatively small layer thickness such a pipe connection is not suitable for use in a pressure pipe connection generic refrigerant compressor, since the coatings in the case of relative movements between the pressure tube and the connecting pipe could wear and thus in the objective connection area the risk of leakage would be.
  • the WO 2007/011247 A discloses a refrigerant compressor with a pressure tube made of plastic, the end portion of which is crimped with a connecting tube leading in the direction of a condenser.
  • the end portion of the connecting pipe is here widened funnel-shaped.
  • the continuous flow of emerging from the piston-cylinder unit refrigerant should not be hindered.
  • a generic refrigerant compressor has a hermetically sealed compressor housing, in the interior of which a refrigerant-compressing piston-cylinder unit operates, which is connected to a suction pipe and a pressure pipe, via the suction pipe, a refrigerant flows to the piston-cylinder unit, and there compressed refrigerant along a pressure tube made of plastic and a pressure tube connected to the pressure tube, made of metal connecting pipe pressure line is guided through the interior of the compressor housing and subsequently to the exterior of the compressor housing.
  • the pressure tube is sealingly connected by means of a plastic made, sleeve-shaped and arranged between the pressure tube and the connecting pipe connecting element with the connecting pipe made of metal, wherein the connecting pipe has a pressure pipe facing, at least partially narrowed end portion, which ensures the arranged within the connecting pipe connecting element in its axial position.
  • the different coefficient of thermal expansion of the pressure pipe made of plastic can be ideally compensated for the connecting pipe made of metal, thus preventing leaks in the pressure path.
  • a subsequent to the end region of the pressure tube, bounded by a connecting element inner surface opening cross section of the connecting element is greater than or equal to a bounded by a pressure tube inner surface flow cross section of the pressure tube.
  • an outer side of the pressure tube is sealingly encased by the connecting element, wherein the connecting element has a sealing connection to the connecting pipe.
  • the sealing connection between the connecting element and the connecting pipe is produced by a sealing element arranged between the connecting element and the connecting pipe.
  • This sealing element is preferably an O-ring, which is held in a groove provided on an outer side of the connecting element.
  • sealing element may be provided, such as a seal by means of adhesive or by Providing a press fit between the connecting element and the connecting pipe.
  • the inner surface of the connecting element is designed stepped, wherein a first inner surface portion surrounding the pressure tube and having an inner surface substantially adjacent to an end region of the pressure tube, preferably to an end face of the pressure tube the pressure tube aligned or outside these lying second inner surface portion of the connecting element are provided.
  • the stepped design of the fastener inner surface allows secure retention and accurate positioning of the pressure tube end portion in the fastener.
  • the connecting element can be connected by gluing, welding or extrusion coating with the pressure tube.
  • the connecting element is attached to the pressure tube by means of laser welding technology.
  • at least that portion of the connecting element adjoining the pressure tube is permeable at least for infrared wavelengths in the range between 800 and 960 nm.
  • the connecting pipe is crimped with the connecting element.
  • the outer side of the connecting element has a complementary geometry prepared for crimping with the connecting pipe, preferably in the form of a concave recess.
  • the connecting element is made in a preferred embodiment of an elastomeric plastic.
  • Made of an elastomer fasteners can deform elastically under tensile, compressive or bending stress, so that a greater robustness of the pressure path is achieved against mechanically or thermally induced forces.
  • the connecting pipe is fastened, preferably welded, to a wall of the compressor housing at the level of an end section of the pressure pipe held in the connection pipe or in the connecting element.
  • Fig.1 shows a refrigerant compressor in a perspective view with a compressor housing 1 together with a suction pipe. 2 and a pressure section 3, 6 formed by a pressure pipe 3 and a connecting pipe 6.
  • the suction pipe 2 leads into the interior 8 of the compressor housing 1 and performs an incoming refrigerant from an evaporator, not shown, of a mounted on a base plate 16 in the compressor housing 1 piston-cylinder unit 4 to re-compress the previously expanded in the evaporator refrigerant.
  • the compressed refrigerant is led away via the pressure section 3, 6 again from the piston-cylinder unit 4 and leads out of the interior 8 of the compressor housing 1 (see also Fig.2 ).
  • Fig.2 is the leading through the interior of the compressor housing 1 section of the pressure section 3, 6, namely the connected to the piston-cylinder unit 4 pressure tube 3 is shown.
  • This section is also called “serpentine”.
  • the end portion 3 c of the pressure tube 3 is provided for connection to a connection pipe 6 arranged outside the compressor housing 1, which is also part of the pressure section 3, 6, but is further away from the piston-cylinder unit 4 than the pressure pipe 3.
  • the pressure section 3, 6 further comprises a pressure muffler 18, which may however also be arranged outside the compressor housing 1.
  • the pressure tube 3 - as already known from the prior art - made of plastic, such as a thermoplastic, thermosetting or elastomeric plastic.
  • the connecting pipe 6 to be connected to the pressure pipe 3 is made of metal.
  • the connecting pipe 6 is made of copper, a copper alloy or steel, but it may also be made of other metallic materials and have any shell or inner coatings.
  • the material copper has an expansion coefficient about four times higher than plastic and resulting in the interior of the compressor housing 1 operating temperatures of up to 120 ° C, to ensure the tightness of the pressure section 3, 6 special requirements for a connection of the pressure tube 3 and the connecting pipe. 6 posed.
  • the pressure tube 3 is connected to the connection pipe 6 made of metal by means of a sleeve-shaped, sleeve-shaped connecting element 5 arranged between the pressure tube 3 and the connecting tube 6 and made of plastic.
  • connection pipe 3 is not necessarily inside or the connection pipe 6 need not necessarily be outside the compressor housing 1.
  • connection region between pressure tube 3 and connecting tube 6 or the connection according to the invention shown in the figures by means of a connecting element 5 can be located in any area of the pressure section 3, 6, ie also inside or outside of the compressor housing 1.
  • the connecting element 5 can be made, for example, of polyamide (PA), polyethylene (PE), polypropylene (PP), syntactic polystyrene (SPS) or polytetrafluoroethylene (PTFE).
  • PA polyamide
  • PE polyethylene
  • PP polypropylene
  • SPS syntactic polystyrene
  • PTFE polytetrafluoroethylene
  • the connecting element 5 is made of a thermoplastic material manufactured to allow a good weldability of the connecting element 5 with the pressure tube 3.
  • a connection element 5 which is pressed or glued in the connecting pipe 6 and made of thermoplastic material can also move with it in the event of heating of the connecting pipe 6 and thus allow a better fit of the connecting element 5 in the connecting pipe 6.
  • Figure 3 shows a first embodiment of the pressure pipe connection according to the invention.
  • the connection pipe 6 coming from the exterior 9 or leading to the evaporator protrudes a little way into the interior 8 of the compressor housing 1 provided with a passage opening 17 and is connected to the compressor housing 1 on an outside 6b, eg welded.
  • the connecting element 5 is further inserted into the connecting pipe 6, preferably pressed and is secured by this in its axial position by the connecting pipe 6 has a narrowed end portion 6c facing the pressure pipe 3, which has an end face 5c of disposed within the connecting pipe 6 Connecting element 5 engages around at least at one point of its circumference and secures against axial displacement.
  • the end portion 6 c of the connecting pipe 6 is bent or compressed in the direction of an outer side 3 b of the pressure pipe 3.
  • the outer side 3b of the pressure tube 3 is sealingly encased by an inner surface 5a of the connecting element 5.
  • the inner surface 5 a, 5 a 'of the connecting element 5 is made stepped, wherein a pressure tube 3 enclosing the first inner surface portion 5a and a to the end portion 3 c of Pressure tube 3 and at the end face an adjacent second inner surface portion 5a 'of the connecting element 5 are provided.
  • a flow cross section adjoining the end region 3c of the pressure pipe 3 and defined by the second inner surface section 5a 'is provided 11 of the connecting element 5 is greater than or equal to a defined by an inner surface 3a of the pressure tube 3 flow cross-section 10 of the pressure tube 3 is formed.
  • the second inner surface portion 5a 'of the connecting element 5 is substantially aligned with the inner surface 3a of the pressure tube 3 or (viewed relative to the central axis) just outside the inner surface 3a of the pressure tube third
  • the connecting element 5 is attached to the pressure tube 3 by means of sealing connection technology, e.g. by gluing, welding, pressing or overmolding.
  • the connecting element 5 is fastened to the pressure tube 3 by means of infrared laser welding technology.
  • at least that portion of the connecting element 5 adjoining the pressure tube 3 is translucent or permeable at least for infrared wavelengths in the range between 800 and 960 nm in order to pass through the jacket of the pressure tube 3 with a suitable infrared laser welding device and a welding temperature in the contact region between the outside 3b of the pressure tube 3 and the inner surface 5a of the connecting element 5 to achieve.
  • the pressure tube 3, however, is made of black or dark plastic to allow optimal absorption of the radiated by the infrared laser welding device energy.
  • the connecting element 5 sealingly connected to the pressure pipe 3 also has a sealing connection to the connecting pipe 6.
  • This sealing connection is produced in the illustrated embodiment by a sealing element 7 arranged between the connecting element 5 and the connecting pipe 6.
  • the sealing element 7 is an O-ring which is held in a groove 13 provided on the outer side 5b of the connecting element 5 and whose outer diameter is at least greater than the inner diameter of the connecting tube 6 or the clear width of the flow cross section 12.
  • the O-ring or the sealing element 7 points in Figure 3 a lenticular cross section.
  • an O-ring 7 is inserted into the groove 13 of the connecting element 5, whose cross-section has a substantially square shape, wherein the sides of the cross-section square are each concave, so that through the O-ring 7 both to the inner surface 6 a of the connecting pipe 6 as also give the outer side 5a of the connecting element 5 each two sealing contact lines.
  • Such an embodiment of the sealing element 7 allows an even better guarantee of the tightness between the connecting pipe 6 and the connecting element 5.
  • connecting element 5 In order to achieve a sealing connection of the connecting element 5 to the connecting pipe 6, however, it would also be possible to use a specially designed connecting element 5, for example made of an elastomer.
  • connecting element, 5 and the connecting pipe 6 e.g. by applying an adhesive to the connector outer side 5b and / or the inner tube surface 6b, or by providing an interference fit between the connector outer side 5b and the inner tube surface 6b.
  • an adhesive to the connector outer side 5b and / or the inner tube surface 6b
  • Figure 6 shows an alternative embodiment of the invention, wherein the connecting pipe 6 is crimped with the connecting element 5.
  • the outer side 5b of the connecting element 5 has a complementary geometry prepared in the form of a concave recess 14 for crimping with the connecting pipe 6.
  • the connecting pipe 6 is crimped with a suitable device at least at one point of its circumference, so that a jacket portion 6d of the connecting pipe 6 conforms to the concave recess 14 and such axial fixing of the Connecting pipe 6 held connecting element 5 causes.
  • FIG. 6 shows the concave recess 14 of the connecting element 5 and the crimped shell portion 6d of the connecting pipe 6 are arranged in a surrounding the end portion 3c of the pressure element 5 held in the connecting element 5 position.
  • the region of the connecting element 5 located below the jacket section 6d of the connecting pipe 6 is pressed even more strongly against the pressure pipe 3 and the sealing effect between the connecting element 5 and the pressure pipe 3 is further increased.
  • Such an arrangement would prove to be advantageous in particular in connection elements 5 in elastomer design, since it would be possible to dispense with the provision of a separate sealing element 7.
  • the sealing elements 7 can be used with any cross-sectional geometry and in any number (see also Fig.7 and 8 ) or, as already mentioned, also omitted, since a sufficient sealing effect to the connecting pipe 6 is already achieved by a connecting element 5 having a sealing geometry.

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  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Description

GEBIET DER ERFINDUNGFIELD OF THE INVENTION

Die Erfindung bezieht sich auf einen Kältemittelverdichter, welcher ein hermetisch dichtes Verdichtergehäuse aufweist, in dessen Innerem eine ein Kältemittel verdichtende Kolben-Zylinder-Einheit arbeitet, die über ein Saugrohr Kältemittel von außerhalb des Verdichtergehäuses ansaugt und das Kältemittel unter Verdichtung über eine aus einem aus Kunststoff gefertigten Druckrohr und einem aus Metall gefertigten Anschlussrohr gebildete Druckstrecke in Richtung eines außerhalb des Verdichtergehäuses angeordneten Kondensators ausstößt, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a refrigerant compressor, which has a hermetically sealed compressor housing, inside which a refrigerant-compressing piston-cylinder unit operates, which draws refrigerant via a suction pipe from outside the compressor housing and the refrigerant under compression via a plastic one manufactured pressure tube and a connecting tube made of metal formed pressure line in the direction of a arranged outside the compressor housing condenser, according to the preamble of claim 1.

Der Kältemaschinenprozess mit zeotropen Gasen als solcher ist seit langem bekannt. Das Kältemittel wird dabei durch Energieaufnahme aus dem zu kühlenden Raum im Verdampfer erhitzt und schließlich überhitzt, was zum Verdampfen führt und mittels einer Kolben-Zylinder-Einheit des Kältemittelverdichters auf ein höheres Druckniveäu verdichtet, wo es Wärme über einen Kondensator abgibt und über eine Drossel, in der eine Druckreduzierung und die Abkühlung des Kältemittels erfolgt, wieder zurück in den Verdampfer befördert wird.The refrigeration process with zeotropic gases as such has long been known. The refrigerant is thereby heated by energy absorption from the space to be cooled in the evaporator and finally superheated, which leads to evaporation and compressed by a piston-cylinder unit of the refrigerant compressor to a higher Druckniveäu, where it emits heat through a capacitor and via a throttle, in which a pressure reduction and the cooling of the refrigerant takes place, is transported back into the evaporator.

Solche Kältemittelverdichter kommen vorwiegend in Kühlschränken oder -regalen zum Einsatz. Dementsprechend hoch ist die jährlich produzierte Stückzahl. Jede technische Verbesserung, die an einem Kältemittelverdichter vorgenommen wird und etwa die Produktionskosten verringert, birgt somit, auf die weltweit eingesetzten Kältemittelverdichter hochgerechnet, ein enormes Einsparungspotential.Such refrigerant compressors are mainly used in refrigerators or shelves. Accordingly high is the annually produced quantity. Any technical improvement that is made to a refrigerant compressor and reduces production costs, for example, has an enormous savings potential extrapolated to the refrigerant compressors used worldwide.

Kältemittelverdichter sind aber auch Geräuschquellen, was während des Betriebs der Kältemittelverdichter mitunter störend sein kann. Die durch den Betrieb der Kolben-Zylinder-Einheit und dessen Antriebsmotor entstehenden Vibrationen belasten aber auch sämtliche Teile des Kältemittelverdichters, die diesen Vibrationen ausgesetzt sind.Refrigerant compressors are also sources of noise, which can sometimes be annoying during operation of the refrigerant compressor. However, the vibrations generated by the operation of the piston-cylinder unit and its drive motor also load all parts of the refrigerant compressor which are exposed to these vibrations.

Dabei zeigt sich, dass ein wesentlicher Teil der Schwingungsübertragung von der Kolben-Zylinder-Einheit auf das Verdichtergehäuse auf das Druckrohr zurückzuführen ist. Andererseits muss das Druckrohr über eine gewisse Beweglichkeit verfügen, um die von der Kolben-Zylinder-Einheit ausgeübten Vibrationen aufnehmen zu können.It turns out that a significant part of the vibration transmission from the piston-cylinder unit to the compressor housing is due to the pressure tube. On the other hand, the pressure tube must have a certain mobility in order to absorb the vibrations exerted by the piston-cylinder unit can.

STAND DER TECHNIKSTATE OF THE ART

Konventionelle Druckrohre werden aus metallischen Werkstoffen mit hohen Elastizitätsmodulen gefertigt. Um die Anforderungen hinsichtlich Schwingungsübertragung und Dauerfestigkeit zu erfüllen, werden die Druckrohre daher entsprechend lang ausgeführt und mehrfach gebogen im Inneren des Verdichtergehäuses angeordnet. Druckrohre dieser Art werden daher auch als Serpentinen bezeichnet.Conventional pressure pipes are made of metallic materials with high moduli of elasticity. In order to meet the requirements with respect to vibration transmission and fatigue strength, the pressure pipes are therefore designed to be correspondingly long and arranged bent several times inside the compressor housing. Pressure pipes of this type are therefore also called serpentines.

Um die Schwingungsübertragung von der Kolben-Zylinder-Einheit auf das Verdichtergehäuse und die Geräuschentwicklung zu verringern, wurde es daher in der AT 007 698 U1 vorgeschlagen, das Druckrohr in seinem durch das Innere des Verdichtergehäuses führenden Abschnitt aus Kunststoff zu fertigen. Durch eine Ausführung des Druckröhrs aus Kunststoff kann des Weiteren eine Erwärmung des Inneren des Verdichtergehäuses durch das im Druckrohr befindliche, verdichtete Kältemittel verringert und der Wirkungsgrad des Kühlmittelverdichters gesteigert werden.In order to reduce the vibration transmission from the piston-cylinder unit to the compressor housing and the noise, it was therefore in the AT 007 698 U1 proposed to manufacture the pressure tube in its leading through the interior of the compressor housing section made of plastic. By an embodiment of the pressure tube made of plastic, further heating of the interior of the compressor housing can be reduced by the compressed refrigerant in the pressure tube and the efficiency of the coolant compressor can be increased.

Bei derartigen Kunststoff-Druckrohren stellt sich die Frage nach einer geeigneten Anbindung des aus dem Inneren des Verdichtergehäuses hinausführenden Druckrohrs an ein zum Kondensator führendes metallisches Anschlussrohr. Eine Problemstellung ergibt sich hierbei aufgrund der unterschiedlichen Wärmeausdehnungskoeffizienten des aus Metall, üblicherweise aus Kupfer oder Stahl gefertigten Anschlussrohrs und des aus Kunststoff gefertigten Druckrohrs, zumal im Inneren des Verdichtergehäuses Betriebstemperaturen von ca. 120°C erreicht werden und beim Auskühlen des Systems auf Raumtemperatur nach erfolgtem Ausschalten des Kältemittelverdichters die Gefahr von Undichtigkeiten zwischen dem Druckrohr und dem Anschlussrohr entsteht.In such plastic pressure pipes, the question arises for a suitable connection of the leading out of the interior of the compressor housing pressure pipe to a condenser leading metallic connection pipe. A problem arises in this case due to the different coefficients of thermal expansion of the metal, usually made of copper or steel connection pipe and made of plastic pressure tube, especially as in the interior of the compressor housing operating temperatures of about 120 ° C can be achieved and when cooling the system to room temperature after Switching off the refrigerant compressor creates the risk of leaks between the pressure pipe and the connecting pipe.

Während metallische Druck- und Anschlussrohre in konventioneller Weise miteinander verlötet, verschraubt oder geklebt werden, so wurden jene gemäß der AT 007 698 U1 z.B. mittels thermoplastischen Fügens miteinander verbunden.While metallic pressure and connection pipes are soldered, bolted or glued together in a conventional manner, those according to AT 007 698 U1 For example, connected to each other by means of thermoplastic joining.

Bei der Verbindung eines aus Kunststoff gefertigten Druckrohrs und eines aus Metall gefertigten Anschlussrohrs soll jedoch keine Querschnittsverminderung der von Druckrohr und Anschlussrohr gebildeten Druckstrecke in Flussrichtung des Kältemittels erfolgen, um den kontinuierlichen Fluss des aus der Kolben-Zylinder-Einheit austretenden Kältemittels nicht zu behindern. Aus diesem Grunde sollen Befestigüngsvarianten, bei denen das Druckrohr auf das Anschlussrohr aufgesteckt wird, vermieden werden.When connecting a pressure tube made of plastic and a connecting pipe made of metal, however, no reduction in cross section of the pressure pipe and connecting pipe pressure line in the direction of flow of the refrigerant should take place so as not to hinder the continuous flow of refrigerant emerging from the piston-cylinder unit. For this reason, fastening variants in which the pressure pipe is attached to the connection pipe should be avoided.

Des Weiteren würde ein Aufstecken des (schlauch- bzw. serpentinenförmigen) Druckrohrs auf das Anschlussrohr keine zufriedenstellende automatisierte Montage ermöglichen.Furthermore, attaching the (tube or serpentine) pressure tube to the connection tube would not allow satisfactory automated assembly.

Die DE 31 02 576 A1 offenbart eine Rohrverbindung, wobei ein erstes Rohr in einen erweiterten Endbereich eines zweiten Rohres einsteckbar ist. Bevor diese aus Aluminium gefertigten Rohre ineinander gesteckt werden, wird der Außenmantel des ersten Rohres mit zwei nebeneinander angeordneten, filmartigen Überzügen versehen, nämlich mit einer Silikongummischicht und einer Klebstoffschicht. Beide Überzüge weisen eine Schichtdicke zwischen 0,5 und 0,75 mm auf. Aufgrund dieser relativ geringen Schichtdicke ist eine derartige Rohrverbindung nicht zum Einsatz bei einer Druckrohranbindung gattungsgemäßer Kältemittelverdichter geeignet, da die Überzüge im Falle von Relativbewegungen zwischen dem Druckrohr und dem Anschlussrohr verschleißen könnten und somit im gegenständlichen Verbindungsbereich die Gefahr einer Leckage gegeben wäre.The DE 31 02 576 A1 discloses a pipe joint wherein a first pipe is insertable into an enlarged end portion of a second pipe. Before these tubes made of aluminum are inserted into one another, the outer casing of the first tube is provided with two juxtaposed, film-like coatings, namely with a silicone rubber layer and an adhesive layer. Both coatings have a layer thickness between 0.5 and 0.75 mm. Because of this relatively small layer thickness such a pipe connection is not suitable for use in a pressure pipe connection generic refrigerant compressor, since the coatings in the case of relative movements between the pressure tube and the connecting pipe could wear and thus in the objective connection area the risk of leakage would be.

Die WO 2007/011247 A offenbart einen Kältemittelverdichter mit einem aus Kunststoff gefertigten Druckrohr, dessen Endabschnitt mit einem in Richtung eines Kondensators führenden Anschlussrohr vercrimpt ist. Der Endabschnitt des Anschlussrohrs ist hierbei trichterförmig erweitert.The WO 2007/011247 A discloses a refrigerant compressor with a pressure tube made of plastic, the end portion of which is crimped with a connecting tube leading in the direction of a condenser. The end portion of the connecting pipe is here widened funnel-shaped.

DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION

Es ist daher das Ziel der vorliegenden Erfindung, eine zuverlässig abdichtende Anbindungsmöglichkeit für ein Druckrohr an ein aus Metall gefertigtes Anschlussrohr eines Kältemittelverdichters bereitzustellen. Insbesondere soll der kontinuierliche Fluss des aus der Kolben-Zylinder-Einheit austretenden Kältemittels nicht behindert werden.It is therefore the object of the present invention to provide a reliable sealing connection possibility for a pressure pipe to a metal-made connecting pipe of a refrigerant compressor. In particular, the continuous flow of emerging from the piston-cylinder unit refrigerant should not be hindered.

Darüber hinaus soll eine zuverlässige automatisierte Montage der Druckrohranbindung ermöglicht werden.In addition, a reliable automated assembly of the pressure pipe connection should be possible.

Diese Aufgabe wird durch einen Kältemittelverdichter mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Ein gattungsgemäßer Kältemittelverdichter weist ein hermetisch dichtes Verdichtergehäuse auf, in dessen Innerem eine ein Kältemittel verdichtende Kolben-Zylinder-Einheit arbeitet, die mit einem Saugrohr sowie einem Druckrohr verbunden ist, wobei über das Saugrohr ein Kältemittel zur Kolben-Zylinder-Einheit strömt, und das dort verdichtete Kältemittel entlang einer vom aus Kunststoff gefertigten Druckrohr und einem an das Druckrohr anschließenden, aus Metall gefertigten Anschlussrohr gebildeten Druckstrecke durch das Innere des Verdichtergehäuses und in weiterer Folge zum Äußeren des Verdichtergehäuses geführt wird. Erfindungsgemäß ist es vorgesehen, dass das Druckrohr mittels eines aus Kunststoff gefertigten, hülsenförmig ausgebildeten und zwischen dem Druckrohr und dem Anschlussrohr angeordneten Verbindungselementes mit dem aus Metall gefertigten Anschlussrohr abdichtend verbunden ist, wobei das Anschlussrohr einen dem Druckrohr zugewandten, zumindest abschnittsweise verengten Endabschnitt aufweist, welcher das innerhalb des Anschlussrohrs angeordnete Verbindungselement in seiner axialen Lage sichert.This object is achieved by a refrigerant compressor with the characterizing features of claim 1. A generic refrigerant compressor has a hermetically sealed compressor housing, in the interior of which a refrigerant-compressing piston-cylinder unit operates, which is connected to a suction pipe and a pressure pipe, via the suction pipe, a refrigerant flows to the piston-cylinder unit, and there compressed refrigerant along a pressure tube made of plastic and a pressure tube connected to the pressure tube, made of metal connecting pipe pressure line is guided through the interior of the compressor housing and subsequently to the exterior of the compressor housing. According to the invention, it is provided that the pressure tube is sealingly connected by means of a plastic made, sleeve-shaped and arranged between the pressure tube and the connecting pipe connecting element with the connecting pipe made of metal, wherein the connecting pipe has a pressure pipe facing, at least partially narrowed end portion, which ensures the arranged within the connecting pipe connecting element in its axial position.

Durch Vorsehung eines entsprechend der jeweiligen Geometrien von Druckrohr und Anschlussrohr adaptierbaren hülsenförmigen Kunststoff-Verbindungselementes zwischen dem Druckrohr und dem Anschlussrohr kann der unterschiedliche Wärmeausdehnungskoeffizient des aus Kunststoff gefertigten Druckrohrs zu dem aus Metall gefertigten Anschlussrohr in idealer Weise kompensiert und Undichtheiten der Druckstrecke somit verhindert werden.By provid- ing a sleeve-shaped plastic connecting element between the pressure pipe and the connecting pipe which can be adapted to the respective geometries of the pressure pipe and connecting pipe, the different coefficient of thermal expansion of the pressure pipe made of plastic can be ideally compensated for the connecting pipe made of metal, thus preventing leaks in the pressure path.

Die Ausgestaltung der Strömungsquerschnitte der von Druckrohr und Anschlussrohr gebildeten Druckstrecke kann nun in beliebiger Weise erfolgen, sodass Querschnittsverminderungen in Flussrichtung des Kältemittels, wie diese z.B. bei einem Aufstecken des Druckrohrs auf das Anschlussrohrs stattfinden würden, künftig vermeidbar sind. Der kontinuierliche Fluss des aus der Kolben-Zylinder-Einheit austretenden Kältemittels kann somit bewahrt werden.The design of the flow cross sections of the pressure line formed by pressure pipe and connecting pipe can now be carried out in any desired manner, so that the cross-sectional reductions in the flow direction of the refrigerant, as would take place, for example, when attaching the pressure tube to the connecting pipe, are avoidable in the future. The continuous flow of the refrigerant leaving the piston-cylinder unit can thus be preserved.

Aus diesem Grunde ist es vorzugsweise vorgesehen, dass ein an den Endbereich des Druckrohrs anschließender, durch eine Verbindungselemente-Innenfläche eingegrenzter Öffnungsquerschnitt des Verbindungselementes größer oder gleich einem durch eine Druckrohr-Innenfläche eingegrenzten Strömungsquerschnitt des Druckrohrs ist.For this reason, it is preferably provided that a subsequent to the end region of the pressure tube, bounded by a connecting element inner surface opening cross section of the connecting element is greater than or equal to a bounded by a pressure tube inner surface flow cross section of the pressure tube.

Gemäß einer bevorzugten Ausführungsweise der erfindungsgemäßen Druckrohranbindung ist es vorgesehen, dass eine Außenseite des Druckrohrs, vom Verbindungselement abdichtend ummantelt ist, wobei das Verbindungselement eine abdichtende Verbindung zum Anschlussrohr besitzt. Auf diese Weise kann eine zuverlässig abdichtende und im automatisierten Verfahren zu montierende Druckstrecke hergestellt werden.According to a preferred embodiment of the pressure pipe connection according to the invention, it is provided that an outer side of the pressure tube is sealingly encased by the connecting element, wherein the connecting element has a sealing connection to the connecting pipe. In this way, a reliable sealing and to be mounted in the automated process pressure line can be produced.

In einer weiteren bevorzugten Ausführung der Erfindung wird die abdichtende Verbindung zwischen dem Verbindungselement und dem Anschlussrohr durch ein zwischen dem Verbindungselement und dem Anschlussrohr angeordnetes Dichtungselement hergestellt. Bei diesem Dichtungselement handelt es sich vorzugsweise um einen O-Ring, welcher in einer an eine Außenseite des Verbindungselementes vorgesehenen Nut gehalten ist. Auf diese Weise wird eine einfache und kostengünstige Abdichtung zwischen dem Verbindungselement und dem Anschlussrohr ermöglicht.In a further preferred embodiment of the invention, the sealing connection between the connecting element and the connecting pipe is produced by a sealing element arranged between the connecting element and the connecting pipe. This sealing element is preferably an O-ring, which is held in a groove provided on an outer side of the connecting element. In this way, a simple and cost-effective sealing between the connecting element and the connecting pipe is made possible.

Selbstverständlich können zusätzlich oder alternativ zur Vorsehung des Dichtungselementes auch andere Abdichtmöglichkeiten zwischen dem Verbindungselement und dem Anschlussrohr vorgesehen sein, so etwa eine Abdichtung mittels Klebstoff oder durch Vorsehung einer Presspassung zwischen dem Verbindungselement und dem Anschlussrohr.Of course, additionally or alternatively to the provision of the sealing element, other sealing possibilities between the connecting element and the Connection pipe may be provided, such as a seal by means of adhesive or by Providing a press fit between the connecting element and the connecting pipe.

In einer weiteren bevorzugten Ausführungsvariante der Erfindung ist es vorgesehen, dass die Innenfläche des Verbindungselementes abgestuft ausgeführt ist, wobei ein das Druckrohr ummantelnder erster Innenflächen-Abschnitt und ein an einen Endbereich des Druckrohrs, vorzugsweise an eine Stirnseite des Druckrohrs angrenzender, im Wesentlichen mit einer Innenfläche des Druckrohrs fluchtender oder außerhalb dieser liegender zweiter Innenflächen-Abschnitt des Verbindungselementes vorgesehen sind. Durch die gestufte Ausführung der Verbindungselemente-Innenfläche werden ein sicherer Halt und eine genaue Positionierung des Druckrohr-Endbereichs im Verbindungselement ermöglicht. Indem der auf die Stirnseite des Druckröhrs folgende zweite Innenflächen-Abschnitt des Verbindungselementes mit der Druckrohr-Innenfläche fluchtet oder (relativ zur Rohrachse betrachtet) außerhalb der Druckrohr-Innenfläche liegt, wird ein kontinuierlicher Fluss des aus der Kolben-Zylinder-Einheit austretenden Kältemittels begünstigt.In a further preferred embodiment of the invention, it is provided that the inner surface of the connecting element is designed stepped, wherein a first inner surface portion surrounding the pressure tube and having an inner surface substantially adjacent to an end region of the pressure tube, preferably to an end face of the pressure tube the pressure tube aligned or outside these lying second inner surface portion of the connecting element are provided. The stepped design of the fastener inner surface allows secure retention and accurate positioning of the pressure tube end portion in the fastener. By the second inner surface portion of the connecting element following the end face of the pressure tube is aligned with the pressure tube inner surface or outside the pressure tube inner surface (viewed relative to the tube axis), a continuous flow of the exiting from the piston-cylinder unit refrigerant is promoted.

Um auch an der Übergangsstelle vom Druckrohr zum Verbindungselement eine zuverlässig abdichtende Druckstrecke zu ermöglichen, kann das Verbindungselement durch Kleben, Schweißen oder Umspritzen mit dem Druckrohr verbunden sein.In order to allow a reliable sealing pressure path at the transition point from the pressure tube to the connecting element, the connecting element can be connected by gluing, welding or extrusion coating with the pressure tube.

In einer besonders bevorzugten Ausführungsweise ist das Verbindungselement mittels Laserschweißtechnik' am Druckrohr befestigt. Hierbei ist zumindest jener an das Druckrohr angrenzende Abschnitt des Verbindungselementes zumindest für Infrarot-Wellenlängen im Bereich zwischen 800 und 960 nm durchlässig. Indem also das Verbindungselement zumindest bereichsweise transluzent ausgeführt ist, kann ein dafür vorgesehenes Infrarot-Laserschweißgerät durch den Mantel des Verbindungselementes hindurchstrahlen und auf diese Weise eine geeignete Schweißtemperatur im Berührungsbereich zwischen der Druckrohr- Außenseite und der Verbindungselemente-Innenfläche erzielen. Eine derartige Verbindung des Druckrohrs mit dem Verbindungselement mittels Infrarot-Laserschweißtechnik besitzt eine höchst zuverlässige Dichtwirkung und ermöglicht eine ökonomische Fertigung.In a particularly preferred embodiment, the connecting element is attached to the pressure tube by means of laser welding technology. In this case, at least that portion of the connecting element adjoining the pressure tube is permeable at least for infrared wavelengths in the range between 800 and 960 nm. Thus, by making the connecting element at least partially translucent, one can provided infrared laser welding device through the shell of the connecting element and thereby achieve a suitable welding temperature in the contact area between the pressure tube outside and the connecting elements inner surface. Such a connection of the pressure tube with the connecting element by means of infrared laser welding technology has a highly reliable sealing effect and enables economical production.

In einer bevorzugten Ausführungsweise der Erfindung ist das Anschlussrohr mit dem Verbindungselement vercrimpt. Hierbei weist die Außenseite des Verbindungselementes eine zum Vercrimpen mit dem Anschlussrohr vorbereitete, komplementäre Geometrie, vorzugsweise in Form einer konkaven Ausnehmung auf. Nach erfolgtem Einführen des Verbindungselementes samt Druckrohr in das Anschlussrohrs wird das Anschlussrohr mit einem Crimpwerkzeug umgeformt, sodass sich ein Mantelabschnitt des Anschlussrohrs an die konkave Ausnehmung anschmiegt und solcherart eine axiale Fixierung des im Anschlussrohr gehaltenen Verbindungselementes bewirkt.In a preferred embodiment of the invention, the connecting pipe is crimped with the connecting element. In this case, the outer side of the connecting element has a complementary geometry prepared for crimping with the connecting pipe, preferably in the form of a concave recess. After the insertion of the connecting element together with the pressure tube into the connecting tube, the connecting tube is reshaped with a crimping tool, so that a jacket section of the connecting tube conforms to the concave recess and thus causes axial fixing of the connecting element held in the connecting tube.

Das Verbindungselement ist in einer bevorzugten Ausführungsform aus einem elastomeren Kunststoff hergestellt. Aus einem Elastomer gefertigte Verbindungselemente können sich unter Zug-, Druck- oder Biegebeanspruchung elastisch verformen, sodass eine größere Robustheit der Druckstrecke gegenüber mechanisch oder thermisch bedingten Krafteinwirkungen erzielt wird.The connecting element is made in a preferred embodiment of an elastomeric plastic. Made of an elastomer fasteners can deform elastically under tensile, compressive or bending stress, so that a greater robustness of the pressure path is achieved against mechanically or thermally induced forces.

Um die Stabilität der aus dem Verdichtergehäuse austretenden Druckstrecke zu erhöhen, ist das Anschlussrohr auf der Höhe eines in Montagelage im Anschlussrohr bzw. im Verbindungselement gehaltenen Endabschnitts des Druckrohrs an einer Wandung des Verdichtergehäuses befestigt, vorzugsweise verschweißt.In order to increase the stability of the pressure line emerging from the compressor housing, the connecting pipe is fastened, preferably welded, to a wall of the compressor housing at the level of an end section of the pressure pipe held in the connection pipe or in the connecting element.

KURZE BESCHREIBUNG DER FIGURENBRIEF DESCRIPTION OF THE FIGURES

Im Anschluss erfolgt nun eine detaillierte Beschreibung der Erfindung anhand von Ausführungsbeispielen. Dabei zeigt:

Fig.1
eine perspektivische Darstellung eines Kältemittelverdichters mit einem Verdichtergehäuse und einem zuführenden Saugrohr sowie einer abführenden Druckstrecke
Fig.2
eine schematische Darstellung des Inneren des Kältemittelverdichters gemäß Fig.1, wobei zur besseren Übersichtlichkeit lediglich die für die Erfindung relevante Teile dargestellt sind Fig.3 eine erfindungsgemäße Anbindung eines Druckrohrs an ein Anschlussrohrs mittels eines Kunststsoff-Verbindungselementes in Detail-Schnittarisicht
Fig.4
eine alternative Ausführung der erfindungsgemäßen Druckrohranbindung in Detail-Schnittansicht
Fig.5
eine alternative Ausführung der erfindungsgemäßen Druckrohranbindung in Detail-Schnittansicht
Fig.6
eine alternative Ausführung der erfindungsgemäßen Druckrohranbindung mit einem vercrimpten Anschlussrohr in Detail-Schnittansicht
Fig.7
eine alternative Ausführung der erfindungsgemäßen Druckrohranbindung mit einem vercrimpten Anschlussrohr in Detail-Schnittansicht
Fig.8
eine alternative Ausführung der erfindungsgemäßen Druckrohranbindung mit einem vercrimpten Anschlussrohr in Detail-Schnittansicht
Following is now a detailed description of the invention based on embodiments. Showing:
Fig.1
a perspective view of a refrigerant compressor with a compressor housing and a feeding suction pipe and a laxative pressure line
Fig.2
a schematic representation of the interior of the refrigerant compressor according to Fig.1 , for clarity, only the relevant parts of the invention are shown Figure 3 an inventive connection of a pressure tube to a connecting pipe by means of a Kunststsoff connecting element in detail Schnittarisicht
Figure 4
an alternative embodiment of the pressure pipe connection according to the invention in detail sectional view
Figure 5
an alternative embodiment of the pressure pipe connection according to the invention in detail sectional view
Figure 6
an alternative embodiment of the pressure pipe connection according to the invention with a crimped connection pipe in detail sectional view
Figure 7
an alternative embodiment of the pressure pipe connection according to the invention with a crimped connection pipe in detail sectional view
Figure 8
an alternative embodiment of the pressure pipe connection according to the invention with a crimped connection pipe in detail sectional view

WEGE ZUR AUSFÜHRUNG DER ERFINDUNGWAYS FOR CARRYING OUT THE INVENTION

Fig.1 zeigt einen Kältemittelverdichter in perspektivischer Ansicht mit einem Verdichtergehäuse 1 samt einem Saugrohr 2 und einer von einem Druckrohr 3 und einem Anschlussrohr 6 gebildeten Druckstrecke 3, 6. Fig.1 shows a refrigerant compressor in a perspective view with a compressor housing 1 together with a suction pipe. 2 and a pressure section 3, 6 formed by a pressure pipe 3 and a connecting pipe 6.

Das Saugrohr 2 führt in das Innere 8 des Verdichtergehäuses 1 und führt ein von einem nicht dargestellten Verdampfer kommendes Kältemittel einer an einer Basisplatte 16 im Verdichtergehäuse 1 montierten Kolben-Zylinder-Einheit 4 zu, um das zuvor im Verdampfer expandierte Kältemittel wieder zu verdichten. Das verdichtete Kältemittel wird über die Druckstrecke 3, 6 wieder von der Kolben-Zylinder-Einheit 4 weggeführt bzw. aus dem Inneren 8 des Verdichtergehäuses 1 herausführt (siehe auch Fig.2).The suction pipe 2 leads into the interior 8 of the compressor housing 1 and performs an incoming refrigerant from an evaporator, not shown, of a mounted on a base plate 16 in the compressor housing 1 piston-cylinder unit 4 to re-compress the previously expanded in the evaporator refrigerant. The compressed refrigerant is led away via the pressure section 3, 6 again from the piston-cylinder unit 4 and leads out of the interior 8 of the compressor housing 1 (see also Fig.2 ).

In Fig.2 ist der durch das Innere des Verdichtergehäuses 1 führende Abschnitt der Druckstrecke 3, 6, nämlich das an die Kolben-Zylinder-Einheit 4 angeschlossene Druckrohr 3 dargestellt. Dieser Abschnitt wird auch als "Serpentine" bezeichnet. Der Endbereich 3c des Druckrohrs 3 ist zur Verbindung mit einem außerhalb des Verdichtergehäuses 1 angeordneten Anschlussrohr 6 vorgesehen, welches ebenfalls Teil der Druckstrecke 3, 6, ist, jedoch weiter von der Kolben-Zylinder-Einheit 4 entfernt ist als das Druckrohr 3.In Fig.2 is the leading through the interior of the compressor housing 1 section of the pressure section 3, 6, namely the connected to the piston-cylinder unit 4 pressure tube 3 is shown. This section is also called "serpentine". The end portion 3 c of the pressure tube 3 is provided for connection to a connection pipe 6 arranged outside the compressor housing 1, which is also part of the pressure section 3, 6, but is further away from the piston-cylinder unit 4 than the pressure pipe 3.

Gemäß Fig.2 umfasst die Druckstrecke 3, 6. des Weiteren noch einem Druckschalldämpfer 18, welcher jedoch auch außerhalb des Verdichtergehäuses 1 angeordnet sein kann.According to Fig.2 The pressure section 3, 6 further comprises a pressure muffler 18, which may however also be arranged outside the compressor housing 1.

Um eine Erwärmung des Inneren des Verdichtergehäuses 1 durch das im Druckrohr 3 geführte Kältemittel zu verringern und um Vibrationen zu dämpfen, ist das Druckrohr 3 - wie bereits aus dem Stand der Technik bekannt - aus Kunststoff, z.B. einem thermoplastischen, duroplastischen oder elastomeren Kunststoff gefertigt.In order to reduce heating of the interior of the compressor housing 1 by the guided in the pressure tube 3 refrigerant and to dampen vibrations, the pressure tube 3 - as already known from the prior art - made of plastic, such as a thermoplastic, thermosetting or elastomeric plastic.

Hingegen ist das an das Druckrohr 3 anzubindende Anschlussrohr 6 aus Metall gefertigt. Vorzugsweise besteht das Anschlussrohr 6 aus Kupfer, einer Kupferlegierung oder Stahl, es kann jedoch auch aus anderen metallischen Werkstoffen ausgeführt sein und allfällige Mantel- oder Innenbeschichtungen aufweisen.By contrast, the connecting pipe 6 to be connected to the pressure pipe 3 is made of metal. Preferably, the connecting pipe 6 is made of copper, a copper alloy or steel, but it may also be made of other metallic materials and have any shell or inner coatings.

Da der Werkstoff Kupfer einen etwa vierfach höheren Ausdehnungskoeffizienten als Kunststoff aufweist und sich im Inneren des Verdichtergehäuses 1 Betriebstemperaturen von bis zu 120°C ergeben, sind zur Gewährleistung der Dichtheit der Druckstrecke 3, 6 besondere Anforderungen an eine Verbindung des Druckrohrs 3 und des Anschlussrohrs 6 gestellt.Since the material copper has an expansion coefficient about four times higher than plastic and resulting in the interior of the compressor housing 1 operating temperatures of up to 120 ° C, to ensure the tightness of the pressure section 3, 6 special requirements for a connection of the pressure tube 3 and the connecting pipe. 6 posed.

Erfindungsgemäß ist es vorgesehen, dass das Druckrohr 3 mittels eines aus Kunststoff gefertigten, hülsenförmigen und zwischen dem Druckrohr 3 und dem Anschlussrohr 6 angeordneten Verbindungselementes 5 mit dem aus Metall gefertigten Anschlussrohr 6 verbunden ist.According to the invention, it is provided that the pressure tube 3 is connected to the connection pipe 6 made of metal by means of a sleeve-shaped, sleeve-shaped connecting element 5 arranged between the pressure tube 3 and the connecting tube 6 and made of plastic.

Es sei angemerkt, dass sich das Druckrohr 3 nicht notwendigerweise innerhalb bzw. das Anschlussrohr 6 sich nicht notwendigerweise außerhalb des Verdichtergehäuses 1 befinden muss. Der Verbindungsbereich zwischen Druckrohr 3 und Anschlussrohr 6 bzw. die in den Figuren dargestellte erfindungsgemäße Anbindung mittels eines Verbindungselementes 5 kann in einem beliebigen Bereich der Druckstrecke 3, 6, also auch innerhalb oder außerhalb des Verdichtergehäuses 1 liegen.It should be noted that the pressure pipe 3 is not necessarily inside or the connection pipe 6 need not necessarily be outside the compressor housing 1. The connection region between pressure tube 3 and connecting tube 6 or the connection according to the invention shown in the figures by means of a connecting element 5 can be located in any area of the pressure section 3, 6, ie also inside or outside of the compressor housing 1.

Das erfindungsgemäße Verbindungselement 5 kann z.B. aus Polyamid (PA), Polyethylen (PE), Polypropylen (PP), syntaktisches Polysterol (SPS) oder Polytetrafluorethylen (PTFE) gefertigt sein. Vorzugsweise ist das Verbindungselement 5 aus einem thermoplastischen Kunststoff hergestellt, um eine gute Verschweißbarkeit des Verbindungselementes 5 mit dem Druckrohr 3 zu ermöglichen. Ein im Anschlussrohr 6 eingepresstes oder eingeklebtes, aus thermoplastischem Kunststoff gefertigtes Verbindungselement 5 kann sich des Weiteren im Falle einer Erwärmung des Anschlussrohrs 6 mit diesem mitbewegen und insofern einen besseren Sitz des Verbindungselementes 5 im Anschlussrohr 6 ermöglichen.The connecting element 5 according to the invention can be made, for example, of polyamide (PA), polyethylene (PE), polypropylene (PP), syntactic polystyrene (SPS) or polytetrafluoroethylene (PTFE). Preferably, the connecting element 5 is made of a thermoplastic material manufactured to allow a good weldability of the connecting element 5 with the pressure tube 3. A connection element 5 which is pressed or glued in the connecting pipe 6 and made of thermoplastic material can also move with it in the event of heating of the connecting pipe 6 and thus allow a better fit of the connecting element 5 in the connecting pipe 6.

Fig.3 zeigt eine erste Ausführungsvariante der erfindungsgemäßen Druckrohranbindung. Hierbei ragt das vom Äußeren 9 kommende bzw. zum Verdampfer führende Anschlussrohr 6 ein Stück weit in das Innere 8 des mit einer Durchgangsöffnung 17 versehenen Verdichtergehäuses 1 hinein und ist an einer Außenseite 6b mit dem Verdichtergehäuse 1 verbunden, z.B. verschweißt. Figure 3 shows a first embodiment of the pressure pipe connection according to the invention. In this case, the connection pipe 6 coming from the exterior 9 or leading to the evaporator protrudes a little way into the interior 8 of the compressor housing 1 provided with a passage opening 17 and is connected to the compressor housing 1 on an outside 6b, eg welded.

Erfindungsgemäß ist das Verbindungselement 5 des Weiteren in das Anschlussrohr 6 eingeschoben, vorzugsweise eingepresst und wird von diesem in seiner axialen Lage gesichert, indem das Anschlussrohr 6 einen dem Druckrohr 3 zugewandten, verengten Endabschnitt 6c aufweist, welcher eine Stirnseite 5c des innerhalb des Anschlussrohrs 6 angeordneten Verbindungselementes 5 zumindest an einem Punkt seines Umfanges umgreift bzw. gegen axiales Verschieben sichert. Gemäß Fig.3 ist der Endabschnitt 6c des Anschlussrohrs 6 in Richtung einer Außenseite 3b des Druckrohrs 3 umgebogen bzw. zusammengestaucht.According to the invention, the connecting element 5 is further inserted into the connecting pipe 6, preferably pressed and is secured by this in its axial position by the connecting pipe 6 has a narrowed end portion 6c facing the pressure pipe 3, which has an end face 5c of disposed within the connecting pipe 6 Connecting element 5 engages around at least at one point of its circumference and secures against axial displacement. According to Figure 3 the end portion 6 c of the connecting pipe 6 is bent or compressed in the direction of an outer side 3 b of the pressure pipe 3.

Die Außenseite 3b des Druckrohrs 3 ist von einer Innenfläche 5a des Verbindungselementes 5 abdichtend ummantelt. Im vorliegenden Ausführungsbeispiel ist die Innenfläche 5a, 5a' des Verbindungselementes 5 abgestuft ausgeführt, wobei ein das Druckrohr 3 ummantelnder erster Innenflächen-Abschnitt 5a und ein an den Endbereich 3c des Druckrohrs 3 bzw. an dessen Stirnseite ein angrenzender zweiter Innenflächen-Abschnitt 5a' des Verbindungselementes 5 vorgesehen sind.The outer side 3b of the pressure tube 3 is sealingly encased by an inner surface 5a of the connecting element 5. In the present embodiment, the inner surface 5 a, 5 a 'of the connecting element 5 is made stepped, wherein a pressure tube 3 enclosing the first inner surface portion 5a and a to the end portion 3 c of Pressure tube 3 and at the end face an adjacent second inner surface portion 5a 'of the connecting element 5 are provided.

Um den kontinuierlichen Fluss des aus der Kolben-Zylinder-Einheit austretenden, in Flussrichtung 15 vom Druckrohr 3 zum Anschlussrohr 6 strömenden Kältemittels nicht zu behindern, ist ein an den Endbereich 3c des Druckrohrs 3 anschließender, durch den zweiten Innenflächen-Abschnitt 5a' definierter Strömungsquerschnitt 11 des Verbindungselementes 5 größer oder gleich einem durch eine Innenfläche 3a des Druckrohrs 3 definierten Strömungsquerschnitt 10 des Druckrohrs 3 ausgebildet. Im Ausführungsbeispiel gemäß Fig.3 fluchtet der zweite Innenflächen-Abschnitt 5a' des Verbindungselementes 5 im Wesentlichen mit der Innenfläche 3a des Druckrohrs 3 bzw. liegt (relativ zur Mittelachse betrachtet) knapp außerhalb der Innenfläche 3a des Druckrohrs 3.In order not to hinder the continuous flow of the refrigerant exiting from the piston-cylinder unit, flowing from the pressure pipe 3 to the connecting pipe 6 in the flow direction 15, a flow cross section adjoining the end region 3c of the pressure pipe 3 and defined by the second inner surface section 5a 'is provided 11 of the connecting element 5 is greater than or equal to a defined by an inner surface 3a of the pressure tube 3 flow cross-section 10 of the pressure tube 3 is formed. In the embodiment according to Figure 3 The second inner surface portion 5a 'of the connecting element 5 is substantially aligned with the inner surface 3a of the pressure tube 3 or (viewed relative to the central axis) just outside the inner surface 3a of the pressure tube third

In Fig.3 ist gut ersichtlich, dass das in Flussrichtung 15 vom Druckrohr 3 zum Anschlussrohr 6 bzw. ins Äußere des Verdichtergehäuses 1 strömende Kältemittel ausschließlich in Rohrabschnitten 3, 5, 6 geführt wird, welche gegenüber dem jeweils vorangehenden Rohrabschnitt einen gleich großen oder größeren Strömungsquerschnitt 10, 11, 12 aufweisen. Da das Kältemittel also zuerst den vom Druckrohr 3 gebildeten Strömungsquerschnitt 10 durchfließt, dann den vom zweiten Innenflächen-Abschnitt 5a' des Verbindungselementes 5 gebildeten, gegenüber dem Strömungsquerschnitt 10 des Druckrohrs 3 geringfügig vergrößerten Strömungsquerschnitt 11, und schließlich den vom Anschlussrohr 6 gebildeten, gegenüber dem Strömungsquerschnitt 11 des Verbindungselementes 5 wiederum erweiterten Strömungsquerschnitt 12, muss das Kältemittel keine Engstelle passieren, sondern kann ungehindert in Flussrichtung 15 expandieren.In Figure 3 It is readily apparent that the refrigerant flowing in the direction of flow 15 from the pressure pipe 3 to the connection pipe 6 or into the exterior of the compressor housing 1 is guided exclusively in pipe sections 3, 5, 6 which have an equal or larger flow cross-section 10, 11 with respect to the respective preceding pipe section 12. Since the refrigerant first flows through the flow cross-section 10 formed by the pressure tube 3, then the flow cross-section 11 formed by the second inner surface portion 5a 'of the connecting element 5, compared to the flow cross-section 10 of the pressure tube 3, and finally formed by the connecting pipe 6, compared to Flow cross-section 11 of the connecting element 5 in turn extended flow cross-section 12, the refrigerant must pass no constriction, but can freely expand in the flow direction 15.

Das Verbindungselement 5 ist am Druckrohr 3 mittels abdichtender Verbindungstechnik angebracht, z.B. durch Kleben, Schweißen, Pressen oder Umspritzen.The connecting element 5 is attached to the pressure tube 3 by means of sealing connection technology, e.g. by gluing, welding, pressing or overmolding.

In einer besonders bevorzugten Verbindungsweise wird das Verbindungselement 5 mittels Infrarot-Laserschweißtechnik am Druckrohr 3 befestigt. Hierbei ist zumindest jener an das Druckrohr 3 angrenzende Abschnitt des Verbindungselementes 5 transluzent ausgeführt bzw. zumindest für Infrarot-Wellenlängen im Bereich zwischen 800 und 960 nm durchlässig, um mit einem geeigneten Infrarot-Laserschweißgerät durch den Mantel des Druckrohrs 3 hindurchzustrahlen und eine Schweißtemperatur im Berührungsbereich zwischen der Außenseite 3b des Druckrohrs 3 und der Innenfläche 5a des Verbindungselementes 5 zu erzielen. Das Druckrohr 3 ist hingegen aus schwarzem oder dunklem Kunststoff gefertigt, um eine optimale Absorption der vom Infrarot-Laserschweißgerät abgestrahlten Energie zu ermöglichen.In a particularly preferred manner of connection, the connecting element 5 is fastened to the pressure tube 3 by means of infrared laser welding technology. In this case, at least that portion of the connecting element 5 adjoining the pressure tube 3 is translucent or permeable at least for infrared wavelengths in the range between 800 and 960 nm in order to pass through the jacket of the pressure tube 3 with a suitable infrared laser welding device and a welding temperature in the contact region between the outside 3b of the pressure tube 3 and the inner surface 5a of the connecting element 5 to achieve. The pressure tube 3, however, is made of black or dark plastic to allow optimal absorption of the radiated by the infrared laser welding device energy.

Das mit dem Druckrohr 3 abdichtend verbundene Verbindungselement 5 weist auch eine abdichtende Verbindung zum Anschlussrohr 6 auf. Diese abdichtende Verbindung wird im dargestellten Ausführungsbeispiel durch ein zwischen dem Verbindungselement 5 und dem Anschlussrohr 6 angeordnetes Dichtungselement 7 hergestellt.The connecting element 5 sealingly connected to the pressure pipe 3 also has a sealing connection to the connecting pipe 6. This sealing connection is produced in the illustrated embodiment by a sealing element 7 arranged between the connecting element 5 and the connecting pipe 6.

Im Ausführungsbeispiel gemäß Fig.3 handelt es sich beim Dichtungselement 7 um einen O-Ring, welcher in einer an der Außenseite 5b des Verbindungselementes 5 vorgesehenen Nut 13 gehalten ist und dessen äußerer Durchmesser zumindest größer als der innere Durchmesser des Anschlussrohrs 6 bzw. die lichte Weite des Strömungsquerschnitts 12 ist.In the embodiment according to Figure 3 the sealing element 7 is an O-ring which is held in a groove 13 provided on the outer side 5b of the connecting element 5 and whose outer diameter is at least greater than the inner diameter of the connecting tube 6 or the clear width of the flow cross section 12.

Der O-Ring bzw. das Dichtungselement 7 weist in Fig.3 einen linsenförmigen Querschnitt auf. Alternativ dazu ist auch der Einsatz von runden, rechteckigen oder rhombischen O-Ringen 7 möglich (siehe Fig.4 und 5). Gemäß Fig.4 ist in die Nut 13 des Verbindungselementes 5 ein O-Ring 7 eingelegt, dessen Querschnitt eine im Wesentlichen quadratische Form aufweist, wobei die Seiten des Querschnittquadrats jeweils konkav ausgeführt sind, sodass sich durch den O-Ring 7 sowohl zur Innenfläche 6a des Anschlussrohrs 6 als auch zur Außenseite 5a des Verbindungselementes 5 jeweils zwei abdichtende Berührungslinien ergeben. Eine solche Ausgestaltung des Dichtungselementes 7 ermöglicht eine noch bessere Gewähr für die Dichtheit zwischen dem Anschlussrohr 6 und dem Verbindungselement 5.The O-ring or the sealing element 7 points in Figure 3 a lenticular cross section. Alternatively, is also the Use of round, rectangular or rhombic O-rings 7 possible (see 4 and 5 ). According to Figure 4 an O-ring 7 is inserted into the groove 13 of the connecting element 5, whose cross-section has a substantially square shape, wherein the sides of the cross-section square are each concave, so that through the O-ring 7 both to the inner surface 6 a of the connecting pipe 6 as also give the outer side 5a of the connecting element 5 each two sealing contact lines. Such an embodiment of the sealing element 7 allows an even better guarantee of the tightness between the connecting pipe 6 and the connecting element 5.

Um eine abdichtende Verbindung des Verbindungselementes 5 zum Anschlussrohr 6 zu erzielen, könnte jedoch auch ein speziell ausgeführtes, beispielsweise aus einem Elastomer gefertigtes Verbindungselement 5 eingesetzt werden.In order to achieve a sealing connection of the connecting element 5 to the connecting pipe 6, however, it would also be possible to use a specially designed connecting element 5, for example made of an elastomer.

Es versteht sich, dass eine alternative oder zusätzliche Abdichtmöglichkeit zwischen dem Verbindungselement, 5 und dem Anschlussrohr 6 z.B. durch Auftragen eines Klebers auf die Verbindungselement-Außenseite 5b und/oder die Anschlussrohr-Innenfläche 6b oder durch Vorsehung einer Presspassung zwischen der Verbindungselement-Außenseite 5b und der Anschlussrohr-Innenfläche 6b möglich ist. Hierbei ist es insbesondere möglich, einen Formschluss durch ein Einhaken des Verbindungselementes 5 und des Anschlussrohrs 6 ineinander zu erzielen.It is understood that an alternative or additional sealing possibility between the connecting element, 5 and the connecting pipe 6, e.g. by applying an adhesive to the connector outer side 5b and / or the inner tube surface 6b, or by providing an interference fit between the connector outer side 5b and the inner tube surface 6b. In this case, it is in particular possible to achieve a form fit by hooking the connecting element 5 and the connecting pipe 6 into one another.

Fig.6 zeigt eine alternative Ausführungsweise der Erfindung, wobei das Anschlussrohr 6 mit dem Verbindungselement 5 vercrimpt ist. Hierbei weist die Außenseite 5b des Verbindungselementes 5 eine zum Vercrimpen mit dem Anschlussrohr 6 vorbereitete, komplementäre Geometrie in Form einer konkaven Ausnehmung 14 auf. Nach erfolgtem Einführen bzw. Einpressen des Verbindungselementes 5 samt Druckrohr 3 in das Anschlussrohr 6 wird das Anschlussrohr 6 mit einer geeigneten Vorrichtung zumindest an einem Punkt seines Umfangs vercrimpt, sodass sich ein Mantelabschnitt 6d des Anschlussrohrs 6 an die konkave Ausnehmung 14 anschmiegt und solcherart eine axiale Fixierung des im Anschlussrohr 6 gehaltenen Verbindungselementes 5 bewirkt. Figure 6 shows an alternative embodiment of the invention, wherein the connecting pipe 6 is crimped with the connecting element 5. In this case, the outer side 5b of the connecting element 5 has a complementary geometry prepared in the form of a concave recess 14 for crimping with the connecting pipe 6. After insertion or pressing the connecting element 5 together with the pressure tube 3 into the connecting pipe 6, the connecting pipe 6 is crimped with a suitable device at least at one point of its circumference, so that a jacket portion 6d of the connecting pipe 6 conforms to the concave recess 14 and such axial fixing of the Connecting pipe 6 held connecting element 5 causes.

Wie Fig.6 zeigt, sind die konkave Ausnehmung 14 des Verbindungselementes 5 bzw. der vercrimpte Mantelabschnitt 6d des Anschlussrohrs 6 in einer den Endbereich 3c des im Verbindungselement 5 gehaltenen Druckrohrs 3 umgebende Position angeordnet. Durch den beschriebenen Crimpvorgang wird der unter dem Mantelabschnitt 6d des Anschlussrohrs 6 befindliche Bereich des Verbindungselementes 5 noch stärker an das Druckrohr 3 gepresst und Dichtwirkung zwischen Verbindungselement 5 und Druckrohr 3 weiter erhöht. Eine solche Anordnung würde sich insbesondere bei Verbindungselementen 5 in Elastomerausführung als vorteilhaft erweisen, da auf die Vorsehung eines separaten Dichtungselementes 7 verzichtet werden könnte.As Figure 6 shows the concave recess 14 of the connecting element 5 and the crimped shell portion 6d of the connecting pipe 6 are arranged in a surrounding the end portion 3c of the pressure element 5 held in the connecting element 5 position. As a result of the described crimping operation, the region of the connecting element 5 located below the jacket section 6d of the connecting pipe 6 is pressed even more strongly against the pressure pipe 3 and the sealing effect between the connecting element 5 and the pressure pipe 3 is further increased. Such an arrangement would prove to be advantageous in particular in connection elements 5 in elastomer design, since it would be possible to dispense with the provision of a separate sealing element 7.

Aus Stabilitätsgründen ist das Anschlussrohr 6, so wie bereits in Fig.1 dargestellt, auf der Höhe des im Anschlussrohr 6 bzw. im Verbindungselement 5 gehaltenen Endabschnitts 3c des Druckrohrs 3 an der Wandung des Verdichtergehäuses 1 befestigt.For stability reasons, the connecting pipe 6, as already in Fig.1 shown attached to the height of the terminal tube 6 and held in the connecting element 5 end portion 3c of the pressure tube 3 to the wall of the compressor housing 1.

Auch im Falle einer vercrimpten Ausführungsweise der Druckstrecke 3, 6 können die Dichtungselemente 7 mit beliebiger Querschnittsgeometrie und in beliebiger Anzahl eingesetzt werden (siehe auch Fig.7 und 8) oder, wie bereits erwähnt, auch entfallen, da eine ausreichende Dichtwirkung zum Anschlussrohr 6 bereits von einem eine abdichtende Geometrie aufweisenden Verbindungselement 5 erzielt wird.Even in the case of a crimped embodiment of the pressure section 3, 6, the sealing elements 7 can be used with any cross-sectional geometry and in any number (see also Fig.7 and 8 ) or, as already mentioned, also omitted, since a sufficient sealing effect to the connecting pipe 6 is already achieved by a connecting element 5 having a sealing geometry.

Claims (12)

  1. A refrigerant compressor, comprising a hermetically sealed compressor housing (1), in whose interior (8) a piston-cylinder unit (4) compressing a refrigerant operates, which sucks in refrigerant from outside (9) the compressor housing (1) via a suction pipe (2) and expels the refrigerant under compression via a pressure section (3, 6), formed from a pressure pipe (3) manufactured from plastic and a connection pipe (6) manufactured from metal in the direction of a condenser situated outside (9) the compressor housing (1), characterized in that the pressure pipe (3) is connected to form a seal to the connection pipe (6) using a sleeve-shaped connector (5), which is manufactured from plastic and is situated between the pressure pipe (3) and the connection pipe (6), the connection pipe (6) having an at least sectionally constricted end section (6c), facing toward the pressure pipe (3), which secures the connector (5) situated inside the connection pipe (6) in its axial location.
  2. The refrigerant compressor according to Claim 1 or 2, characterized in that a sealing connection between the connector (5) and the connection pipe (6) is produced by a seal element (7) situated between the connector (5) and the connection pipe (6).
  3. The refrigerant compressor according to Claim 2, characterized in that the seal element (7) is an O-ring, which is preferably held in a groove (13) provided on an outer side (5b) of the connector (5).
  4. The refrigerant compressor according to one of Claims 1 through 3, characterized in that a flow cross-section (11) of the connector (5), which adjoins an end area (3c) of the pressure pipe (3) and is delimited by an inner surface (5a, 5a'), is greater than or equal to a flow cross-section (10) of the pressure pipe (3), which is delimited by an inner surface (3a).
  5. The refrigerant compressor according to one of Claims 1 through 4, characterized in that an outer side (3b) of the pressure pipe (3) is jacketed by the connector (5) to form a seal.
  6. The refrigerant compressor according to Claim 4 or 5, characterized in that the inner surface (5a, 5a') of the connector (5) is implemented as stepped, a first inner surface section (5a), which jackets the pressure pipe (3), and a second inner surface section (5a'), which adjoins the end area (3c) of the pressure pipe (3), preferably a front side of the pressure pipe (3), and is essentially aligned with an inner surface (3a) of the pressure pipe (3) or - viewed relative to the pipe axis - lies outside the pressure pipe inner surface (3a), of the connector (5) are provided.
  7. The refrigerant compressor according to one of Claims 1 through 6, characterized in that the connector (5) is connected to the pressure pipe (3) by gluing, welding, or extrusion coating.
  8. The refrigerant compressor according to one of Claims 1 through 7, characterized in that the connector (5) is fastened on the pressure pipe (3) using laser welding, at least the section of the connector (5) adjoining the pressure pipe (3) being transparent at least to infrared wavelengths in the range between 800 and 960 nm.
  9. The refrigerant compressor according to one of Claims 1 through 8, characterized in that the connector (5) is pressed into the connection pipe (6).
  10. The refrigerant compressor according to one of Claims 1 through 9, characterized in that an outer side (5b) of the connector (5) has a complementary geometry which is prepared for crimping with the connection pipe (6), preferably in the form of a concave recess (14).
  11. The refrigerant compressor according to one of Claims 1 through 10, characterized in that the connector (5) is produced from an elastomeric plastic.
  12. The refrigerant compressor according to one of Claims 1 through 11, characterized in that the connection pipe (6) is fastened, preferably welded, to a wall of the compressor housing (1) at the height of the end section (3c) of the pressure pipe (3) held in the assembly location in the connection pipe (6) and/or in the connector (5).
EP20080804349 2007-10-05 2008-09-18 Coolant compressor Active EP2207962B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0060407U AT10136U1 (en) 2007-10-05 2007-10-05 REFRIGERANT COMPRESSOR
PCT/EP2008/062405 WO2009047095A1 (en) 2007-10-05 2008-09-18 Coolant compressor

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EP2207962A1 EP2207962A1 (en) 2010-07-21
EP2207962B1 true EP2207962B1 (en) 2015-04-29

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US (1) US20100226805A1 (en)
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CN (1) CN101883923A (en)
AT (1) AT10136U1 (en)
WO (1) WO2009047095A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5454423B2 (en) * 2010-03-29 2014-03-26 株式会社豊田自動織機 Electric compressor
US9605677B2 (en) 2012-07-23 2017-03-28 Emerson Climate Technologies, Inc. Anti-wear coatings for scroll compressor wear surfaces
CN108240335B (en) 2012-07-23 2019-09-20 艾默生环境优化技术有限公司 Injection molding sealing element for compressor
BR102012025273B1 (en) 2012-10-03 2021-09-08 Embraco Indústria De Compressores E Soluções Em Refrigeração Ltda COOLING COMPRESSOR
KR20160055497A (en) 2014-11-10 2016-05-18 엘지전자 주식회사 Reciprocating compressor and a method for assembling the same
KR102259638B1 (en) * 2016-05-03 2021-06-02 엘지전자 주식회사 linear compressor
BR102016013772B1 (en) * 2016-06-14 2021-07-13 Embraco Industria De Compressores E Soluqoes Em Refrigeraqao Ltda. IMPROVEMENTS INTRODUCED IN A SYSTEM FOR CONNECTING REFRIGERANT FLUID DISCHARGE PIPES IN HERMETIC COMPRESSOR CYLINDER CAPS, AND CORRESPONDING EXECUTION PROCESS
KR101856392B1 (en) 2016-12-28 2018-05-09 엘지전자 주식회사 Reciprocating compressor
KR101855014B1 (en) 2016-12-28 2018-05-04 엘지전자 주식회사 Reciprocating compressor
DE102017122126A1 (en) 2017-09-25 2019-03-28 Vaillant Gmbh Leakage detection
BR102018015458B1 (en) 2018-07-27 2021-12-21 Whirlpool S.A. FLUID CONDUCTOR TUBE
CN110425279B (en) * 2019-08-06 2021-04-27 北京卫星环境工程研究所 Secondary sealing ring structure for high-power two-stage G-M refrigerator
CN114641615A (en) * 2019-11-01 2022-06-17 莱格特普莱特加拿大公司 Pump noise attenuator and method
KR20210125669A (en) * 2020-04-09 2021-10-19 현대자동차주식회사 Piping system for air conditioner
CN114508475A (en) * 2022-02-14 2022-05-17 广州万宝集团压缩机有限公司 Interior exhaust structure, compressor and attemperator

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498395A (en) * 1946-11-21 1950-02-21 Flex O Tube Company High-pressure swivel hose coupling
US2776151A (en) * 1952-08-19 1957-01-01 Continental Can Co Pipe fitting for connecting metal pipe to plastic pipe
US3236543A (en) * 1959-06-12 1966-02-22 Mueller Co Plastic pipe coupling with frangible lugs
US3467414A (en) * 1966-09-30 1969-09-16 Ronald T Downing Tube joint having buckled locking means
US3858914A (en) * 1973-07-25 1975-01-07 Brass Craft Mfg Co Transition pipe connection
US4277091A (en) * 1979-04-19 1981-07-07 Hunter John J Coupling for lined pipe
US4371199A (en) * 1980-01-31 1983-02-01 General Electric Company Crimped tube joint
US4330924A (en) 1980-01-31 1982-05-25 General Electric Company Method of forming crimped tube joint
US4776616A (en) * 1986-05-26 1988-10-11 Usui Kokusai Sangyo Kabushiki Kaisha Coupling
JPH0259130A (en) * 1988-07-13 1990-02-28 Mie Horo Kk Joining method for tube stock
JPH0735271A (en) * 1993-07-20 1995-02-07 Usui Internatl Ind Co Ltd Metallic small-diameter piping connecting/fixing method
US5890287A (en) * 1996-01-10 1999-04-06 Usui Kokusai Sangyo Kaisha Limited Connection structure and process for connecting eye joints and slender metal pipes
FR2749639B1 (en) * 1996-06-10 1998-08-21 Hutchinson QUICK CONNECTION DEVICE FOR PRESSURE FLUID CONDUIT
DE59706899D1 (en) * 1996-10-25 2002-05-08 Mapress Gmbh & Co Kg PIPE CONNECTION
JP4298357B2 (en) * 2003-04-08 2009-07-15 三桜工業株式会社 Pipe connection structure
US7516990B2 (en) * 2003-05-15 2009-04-14 Mueller Industries, Inc. Fluid conduit system and fittings therefor
US6896297B2 (en) * 2003-08-05 2005-05-24 Central Plastics Company Gas service riser assembly and ductile pipe to plastic pipe transition connection
CA2530829C (en) * 2003-08-21 2012-03-20 Steven Slunick Metal to plastic fluid connection with overmolded anti-rotation retainer
AT7698U1 (en) * 2004-04-28 2005-07-25 Verdichter Oe Ges M B H REFRIGERANT COMPRESSOR
US8678789B2 (en) 2005-07-22 2014-03-25 Fisher & Paykel Appliances Limited Refrigeration compressor with flexible discharge conduit

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AT10136U1 (en) 2008-09-15
US20100226805A1 (en) 2010-09-09
EP2207962A1 (en) 2010-07-21
CN101883923A (en) 2010-11-10
WO2009047095A1 (en) 2009-04-16

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