[go: up one dir, main page]

EP0520309B1 - Evaporator for a compressor-refrigerator - Google Patents

Evaporator for a compressor-refrigerator Download PDF

Info

Publication number
EP0520309B1
EP0520309B1 EP92110195A EP92110195A EP0520309B1 EP 0520309 B1 EP0520309 B1 EP 0520309B1 EP 92110195 A EP92110195 A EP 92110195A EP 92110195 A EP92110195 A EP 92110195A EP 0520309 B1 EP0520309 B1 EP 0520309B1
Authority
EP
European Patent Office
Prior art keywords
tube
evaporator
suction
guide tube
capillary
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
EP92110195A
Other languages
German (de)
French (fr)
Other versions
EP0520309A1 (en
Inventor
Dieter Bitter
Eberhard Bornkessel
Helmut Gehrke
Herbert Stember
Horst Schnabel
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.)
Krupp VDM GmbH
Original Assignee
Krupp VDM GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Krupp VDM GmbH filed Critical Krupp VDM GmbH
Priority to EP94113040A priority Critical patent/EP0629824B1/en
Publication of EP0520309A1 publication Critical patent/EP0520309A1/en
Application granted granted Critical
Publication of EP0520309B1 publication Critical patent/EP0520309B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/022—Evaporators with plate-like or laminated elements
    • F25B39/024—Evaporators with plate-like or laminated elements with elements constructed in the shape of a hollow panel
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/37—Capillary tubes
    • 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
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/052—Compression system with heat exchange between particular parts of the system between the capillary tube and another part of the refrigeration cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • 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
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/054—Compression system with heat exchange between particular parts of the system between the suction tube of the compressor and another part of the cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B40/00—Subcoolers, desuperheaters or superheaters

Definitions

  • the invention relates to an evaporator for a compressor cooling device, which is made from a two-layer evaporator board, between which meandering refrigerant channels and an inlet and an outlet area for supplying and discharging the refrigerant are formed, with an intake pipe connected to the outlet area, which can be connected to a suction side of the compressor, and with a capillary tube for supplying liquid refrigerant into the inlet area, which passes through the suction tube outside the evaporator and can be connected to a condenser.
  • Evaporators designed in this way are known, for example, from DE-B-1 242 646 and are used in many domestic refrigerators.
  • the invention is now concerned with the refrigerant circuit, in particular with the refrigerant inlet into the evaporator, which takes place in the known cooling devices via a long throttle capillary tube corresponding to the required throttling effect, which according to the state of the art represents the refrigerant supply line.
  • This throttle capillary tube is routed regularly into the inlet area of the refrigerant channel through a corresponding inlet thrust and, in the case of the so-called single-tube connection, also lies in the outlet area of the refrigerant channel with a section of its length.
  • the refrigerant channel itself runs in a meandering manner in one of two aluminum sheets welded together, for example according to the so-called roll bonding process Manufactured, originally flat, then formed into the refrigerator compartment evaporator board and closes on the outlet side with an aluminum pipe socket, the so-called suction pipe, which is inserted pressure-tight into the channel end.
  • the throttle capillary tube is so long today in the majority of the refrigerator types manufactured that it can only be accommodated to a small extent in the inlet area of the refrigerant channel of the evaporator and is largely outside the evaporator, often with a partial length of several meters. This part length is regularly wound up in a ring bundle to form a so-called capillary curl.
  • a first production simplification could already be achieved by using throttle capillary tubes for evaporators of different types, all of which have an outer diameter of, for example, 1.9 mm, with inner diameters of, for example, 0.55 to 1.05 mm, which allow a type-dependent adaptation.
  • at least connections of the throttle capillary tube or openings for this can be designed uniformly.
  • the dragging of the capillary curl in the final stages of production continues to be a hindrance, just as the capillary curl unfavorably determines the packing density of the evaporators during transport to the cooling device manufacturers.
  • the object of the invention is to simplify the variety in the manufacture of the evaporators caused by the numerous types of cooling devices and to take into account the consequences of using new refrigerants of lower viscosity.
  • the generic evaporator is now characterized by the arrangement of a guide tube, the inner diameter of which is somewhat larger than the outer diameter of the capillary tube and the outer diameter of which is substantially smaller than the inner diameter of the suction tube, and the outer end of which opens into the inlet area, the inlet and outlet area being defined by the the outer tube wall of the guide tube and a constriction between the two evaporator boards are separated from one another, and the capillary tube is arranged in a first length section L1 of the guide tube, and ends therein, while the guide tube has a subsequent second length section L2 with a cross section which is wider than the capillary flow cross section, which is connected to the inlet area.
  • a gap the size of a soldering fit is regularly set, the filling of which connects the tubes during soldering.
  • the invention enables extensive standardization of the evaporator production and basically allows the separate production of the still throttle-capillary tube-free evaporator and the associated capillary tubes up to a final assembly in which the capillary tube is installed in the guide tube, that is, inserted as far as possible into or through this and finally being soldered to this
  • the length, type and installation of the guide tubes in the evaporator boards can be reduced to a small number of construction variants, thus simplifying the production process.
  • One embodiment of the invention provides that the guide tube has a constriction as a stop for the evaporator-side end of the throttle capillary tube.
  • a curved intermediate pipe is arranged between the suction pipe and a suction line to the compressor, which is penetrated by the capillary pipe and the guide pipe, that the constriction seen in the inflow direction behind the opening of the intermediate pipe and thus within the through the intermediate pipe, the suction pipe and the inlet area of the Refrigerant channel formed area is. It is also expedient to expand the end of the guide tube in a funnel shape in order to make it easier to insert the throttle capillary tube into the guide tube and to solder both parts.
  • the invention makes it possible to adapt easily to different design requirements of the cooling device manufacturers.
  • An arrow 5 indicates the inflow direction
  • another arrow 6 indicates the outflow direction.
  • FIG. 1 shows a flat evaporator, the refrigerant channel 2 of which is partially indicated by a broken line.
  • the suction tube 10 is held in the evaporator board via a soldered connection 16.
  • a solder joint 17 holds the throttle capillary tube 7 in the guide tube 8.
  • the constriction 19 in the inlet area 3 forms the inner fixation of the refrigerant supply line.
  • the external fixation takes place in an opening 20 in the tube wall of the intermediate tube 11, into which the guide tube 8 is soldered.
  • a suction tube 10 serves for the refrigerant outlet.
  • the guide tube 8 is expanded at its outer end to form a funnel 21 and has a constriction 22 as a stop for the throttle capillary tube 7.
  • a spike 23 is provided, into which the suction tube 10 is inserted with a solder fit. This enables a particularly reliable Cu / Al solder connection to be made.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Compressor (AREA)

Description

Die Erfindung betrifft einen Verdampfer für ein Kompressor-Kühlgerät, welches aus einer zweilagigen Verdampferplatine gefertigt ist, zwischen denen mäanderartig verlaufende Kältemittelkanäle sowie ein Einlaß- und ein Auslaßbereich zum Zu- bzw. Abführen des Kältemittels ausgebildet sind, mit einem mit dem Auslaßbereich verbundenen Saugrohr, welches an eine Saugseite des Kompressors anschließbar ist, und mit einem Kapillarrohr zum Zuführen von flüssigem Kältemittel in den Einlaßbereich, welches das Saugrohr außerhalb des Verdampfers durchsetzt und an einen Verflüssiger anschließbar ist. Derartig gestaltete Verdampfer sind beispielsweise aus der DE-B-1 242 646 bekannt und in vielen Haushaltskühlschränken in Benutzung.The invention relates to an evaporator for a compressor cooling device, which is made from a two-layer evaporator board, between which meandering refrigerant channels and an inlet and an outlet area for supplying and discharging the refrigerant are formed, with an intake pipe connected to the outlet area, which can be connected to a suction side of the compressor, and with a capillary tube for supplying liquid refrigerant into the inlet area, which passes through the suction tube outside the evaporator and can be connected to a condenser. Evaporators designed in this way are known, for example, from DE-B-1 242 646 and are used in many domestic refrigerators.

Die Erfindung befaßt sich nun bezüglich des Kältemittelkreislaufes, insbesondere mit dem Kältemitteleinlaß in den Verdampfer, der bei den bekannten Kühlgeräten über ein dem benötigten Drosseleffekt entsprechend langes Drossel-Kapillarrohr, das nach dem praktizierten Stand der Technik die Kältemittelzuführungsleitung darstellt, erfolgt. Dieses Drossel-Kapillarrohr ist regelmäßig bis in den Einlaßbereich des Kältemittelkanals durch einen entsprechenden Einlaßanschub hineingeführt und liegt beim sogenannten Einrohranschluß mit einem Abschnitt seiner Länge auch im Auslaßbereich des Kältemittelkanals. Der Kältemittelkanal selbst verläuft mäanderartig in einer aus zwei miteinander verschweißten Aluminiumblechen, beispielsweise nach dem sogenannten Rollbondverfahren hergestellten, ursprünglich ebenen, dann zum Kühlfach geformten Verdampferplatine und schließt auslaßsseitig mit einem in das Kanalende druckdicht eingesetzten Aluminiumrohrstutzen, dem sogenannten Saugrohr ab.The invention is now concerned with the refrigerant circuit, in particular with the refrigerant inlet into the evaporator, which takes place in the known cooling devices via a long throttle capillary tube corresponding to the required throttling effect, which according to the state of the art represents the refrigerant supply line. This throttle capillary tube is routed regularly into the inlet area of the refrigerant channel through a corresponding inlet thrust and, in the case of the so-called single-tube connection, also lies in the outlet area of the refrigerant channel with a section of its length. The refrigerant channel itself runs in a meandering manner in one of two aluminum sheets welded together, for example according to the so-called roll bonding process Manufactured, originally flat, then formed into the refrigerator compartment evaporator board and closes on the outlet side with an aluminum pipe socket, the so-called suction pipe, which is inserted pressure-tight into the channel end.

Das Drossel-Kapillarrohr ist heute bei der Mehrzahl der hergestellten Kühlschranktypen so lang, daß es im Einlaufbereich des Kältemittelkanals des Verdampfers nur noch zu einem kleinen Teil untergebracht werden kann und zum großen Teil, häufig mit einer Teillänge von mehreren Metern, außerhalb des Verdampfers liegt. Diese Teillänge wird regelmäßig ringbundartig zu einer sogenannten Kapillarlocke aufgewickelt.The throttle capillary tube is so long today in the majority of the refrigerator types manufactured that it can only be accommodated to a small extent in the inlet area of the refrigerant channel of the evaporator and is largely outside the evaporator, often with a partial length of several meters. This part length is regularly wound up in a ring bundle to form a so-called capillary curl.

Mit der in jüngerer Zeit vollzogenen Einführung neuer Kältemittel, die andere Stoffeigenschaften als die bisherigen haben, aber auch ein eigenes Übergangsverhalten von der flüssigen zur gasförmigen Phase im Kältemittelkreislauf zeigen, war die Drosselstrecke bei gleichem Kapillarrohrinnendurchmesser zu verlängern, wodurch sich die Kapillarlocke noch vergrößerte.With the recent introduction of new refrigerants, which have different material properties than the previous ones, but also show their own transition behavior from the liquid to the gaseous phase in the refrigerant circuit, the throttle section had to be extended with the same capillary tube inside diameter, which further increased the capillary curl.

Eine erste Fertigungsvereinfachung konnte bereits dadurch erreicht werden, daß für Verdampfer verschiedenen Typs Drossel-Kapillarrohre verwendet werden, die alle einen Außendurchmesser von beispielsweise 1,9 mm haben, mit Innendurchmessern von beispielsweise 0,55 bis 1,05 mm eine typbedingte Anpassung ermöglichen. So lassen sich wenigstens Anschlüsse des Drossel-Kapillarrohres oder Durchbrüche hierfür einheitlich gestalten. Das Mitschleppen der Kapillarlocke in den Endschritten der Fertigung stellt jedoch nach wie vor eine Behinderung dar, wie auch die Kapillarlocke die Packungsdichte der Verdampfer beim Transport zu den Kühlgeräteherstellern ungünstig bestimmt.A first production simplification could already be achieved by using throttle capillary tubes for evaporators of different types, all of which have an outer diameter of, for example, 1.9 mm, with inner diameters of, for example, 0.55 to 1.05 mm, which allow a type-dependent adaptation. In this way, at least connections of the throttle capillary tube or openings for this can be designed uniformly. The dragging of the capillary curl in the final stages of production, however, continues to be a hindrance, just as the capillary curl unfavorably determines the packing density of the evaporators during transport to the cooling device manufacturers.

Aufgabe der Erfindung ist es, die durch die zahlreichen Kühlgerätetypen bedingte Vielfalt in der Fertigung der Verdampfer zu vereinfachen und dabei den Folgen des Einsatzes neuer Kältemittel geringerer Viskosität Rechnung zu tragen.The object of the invention is to simplify the variety in the manufacture of the evaporators caused by the numerous types of cooling devices and to take into account the consequences of using new refrigerants of lower viscosity.

Erfindungsgemäß ist nun der gattungsgemäße Verdampfer gekennzeichnet durch die Anordnung eines Führungsrohres, dessen Innendurchmesser etwas größer ist als der Außendurchmesser des Kapillarrohrs und dessen Außendurchmesser wesentlich kleiner ist als der Innendurchmesser des Saugrohrs, und dessen äußeres Ende im Einlaßbereich mündet, wobei Ein- und Auslaßbereich durch die äußere Rohrwandung des Führungsrohres und eine Engstelle zwischen den beiden Verdampferplatinen voneinander getrennt sind, und wobei das Kapillarrohr in einem ersten Längenabschnitt L1 des Führungsrohres angeordnet ist, und darin endet, während das Führungsrohr einen anschließenden zweiten Längenabschnitt L2 mit gegenüber dem kapillaren Durchströmquerschnitt erweiterten Querschnitt aufweist, der mit dem Einlaßbereich verbunden ist.According to the invention, the generic evaporator is now characterized by the arrangement of a guide tube, the inner diameter of which is somewhat larger than the outer diameter of the capillary tube and the outer diameter of which is substantially smaller than the inner diameter of the suction tube, and the outer end of which opens into the inlet area, the inlet and outlet area being defined by the the outer tube wall of the guide tube and a constriction between the two evaporator boards are separated from one another, and the capillary tube is arranged in a first length section L1 of the guide tube, and ends therein, while the guide tube has a subsequent second length section L2 with a cross section which is wider than the capillary flow cross section, which is connected to the inlet area.

Zwischen Drossel-Kapillarrohr und Führungsrohr wird regelmäßig ein lötpassungsgroßer Spalt eingestellt, durch dessen Füllung beim Löten die Verbindung der Rohre erfolgt.Between the throttle capillary tube and the guide tube, a gap the size of a soldering fit is regularly set, the filling of which connects the tubes during soldering.

Die Erfindung ermöglicht eine weitgehende Standardisierung der Verdampferfertigung und erlaubt im Fertigungsablauf grundsätzlich das getrennte Fertigen der noch drossel-kapillarrohrfreien Verdampfer und der zugehörigen Kapillarrohre bis zu einer Endmontage, bei der das Kapillarrohr in das Führungsrohr eingebaut, d.h. in dieses beliebig weit eingesteckt oder durch dieses hindurchgesteckt und schließlich mit diesem verlötet wird. Länge, Art und Einbau der Führungsrohre in die Verdampferplatinen kann auf eine geringe Zahl von Bauvarianten reduziert und damit der Fertigungsablauf vereinfacht werden.The invention enables extensive standardization of the evaporator production and basically allows the separate production of the still throttle-capillary tube-free evaporator and the associated capillary tubes up to a final assembly in which the capillary tube is installed in the guide tube, that is, inserted as far as possible into or through this and finally being soldered to this The length, type and installation of the guide tubes in the evaporator boards can be reduced to a small number of construction variants, thus simplifying the production process.

Eine Ausgestaltung der Erfindung sieht vor, daß das Führungsrohr eine Einschnürung als Anschlag für das verdampferseitige Ende des Drossel-Kapillarrohres aufweist.One embodiment of the invention provides that the guide tube has a constriction as a stop for the evaporator-side end of the throttle capillary tube.

Bevorzugt ist zwischen dem Saugrohr und einer Saugleitung zum Kompressor ein gebogenes Zwischenrohr angeordnet, welches von dem Kapillarrohr und dem Führungsrohr durchsetzt wird, daß die Einschnürung in Einströmrichtung gesehen hinter dem Durchbruch des Zwischenrohres und damit innerhalb des durch das Zwischenrohr, das Saugrohr und den Einlaßbereich des Kältemittelkanals gebildeten Bereiches liegt. Es ist auch zweckmäßig, das Ende des Führungsrohres trichterförmig zu erweitern, um das Einstecken des Drossel-Kapillarrohres in das Führungsrohr und das Verlöten beider Teile zu erleichtern.Preferably, a curved intermediate pipe is arranged between the suction pipe and a suction line to the compressor, which is penetrated by the capillary pipe and the guide pipe, that the constriction seen in the inflow direction behind the opening of the intermediate pipe and thus within the through the intermediate pipe, the suction pipe and the inlet area of the Refrigerant channel formed area is. It is also expedient to expand the end of the guide tube in a funnel shape in order to make it easier to insert the throttle capillary tube into the guide tube and to solder both parts.

Insgesamt ermöglicht es die Erfindung, sich unterschiedlichen Konstruktionswünschen der Kühlgerätehersteller problemlos anzupassen.Overall, the invention makes it possible to adapt easily to different design requirements of the cooling device manufacturers.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels erläutert.

Fig. 1
zeigt in schematischer und in ganz oder teilweise geschnittener Darstellung einen Verdampfer eines Kühlgerätes mit einem Einrohranschluß.
The invention is explained below using an exemplary embodiment.
Fig. 1
shows a schematic and in whole or in part sectional view of an evaporator of a refrigerator with a single pipe connection.

In der aus zwei aufeinander liegenden, bis auf die Kanalbereiche miteinder verbundenen Aluminiumblechen hergestellten Verdampferplatine 1 verläuft ein Kältemittelkanal 2, zu dem ein Einlaßbereich 3 und ein Auslaßbereich 4 gehören. Ein Pfeil 5 deutet die Einströmrichtung, ein weiterer Pfeil 6 deutet die Ausströmrichtung an.A refrigerant channel 2, to which an inlet area 3 and an outlet area 4 belong, runs in the evaporator board 1, which is made from two aluminum sheets lying one on top of the other, except for the channel areas connected to one another. An arrow 5 indicates the inflow direction, another arrow 6 indicates the outflow direction.

Der Einlaßbereich des Kältemittelkanals 2 wird über ein Drossel-Kapillarrohr 7 beschickt. Dieses Drossel-Kapillarrohr 7, das regelmäßig aus Kupfer ist, steckt in einem ebenfalls aus Kupfer hergestellten Führungsrohr 8, das vom Saugrohr 10 gehalten ist. Während Verdampfer von Kühlgeräten regelmäßig zu einem Kühlfach geformt sind, zeigt Fig. 1 einen ebenen Verdampfer, dessen Kältemittelkanal 2 teilweise durch eine gestrichelte Linie angedeutet ist. Das teilweise im Zwischenrohr 11 liegende Führungsrohr 8 durchdringt die Rohrwand des Zwischenrohres 11 in dessen S-förmigem Bogen 14 und endet im Saugrohr 10. Das Saugrohr 10 wird über eine Lötverbindung 16 in der Verdampferplatine gehalten. Eine Lötstelle 17 hält das Drossel-Kapillarrohr 7 im Führungsrohr 8.The inlet area of the refrigerant channel 2 is charged via a throttle capillary tube 7. This throttle capillary tube 7, which is regularly made of copper, is in a guide tube 8 also made of copper, which is held by the suction tube 10. While evaporators of cooling devices are regularly shaped into a cooling compartment, FIG. 1 shows a flat evaporator, the refrigerant channel 2 of which is partially indicated by a broken line. The guide tube 8, which is partially located in the intermediate tube 11, penetrates the tube wall of the intermediate tube 11 in its S-shaped bend 14 and ends in the suction tube 10. The suction tube 10 is held in the evaporator board via a soldered connection 16. A solder joint 17 holds the throttle capillary tube 7 in the guide tube 8.

Die Engstelle 19 im Einlaßbereich 3 bildet die innere Fixierung der Kältemittelzuführungsleitung. Die äußere Fixierung erfolgt in einem Durchbruch 20 der Rohrwand des Zwischenrohres 11, in den das Führungsrohr 8 eingelötet ist. Dem Kältemittelauslaß dient ein Saugrohr 10. Das Führungsrohr 8 ist an seinem äußeren Ende zu einem Trichter 21 erweitert und weist eine Einschnürung 22 als Anschlag für das Drossel-Kapillarrohr 7 auf.The constriction 19 in the inlet area 3 forms the inner fixation of the refrigerant supply line. The external fixation takes place in an opening 20 in the tube wall of the intermediate tube 11, into which the guide tube 8 is soldered. A suction tube 10 serves for the refrigerant outlet. The guide tube 8 is expanded at its outer end to form a funnel 21 and has a constriction 22 as a stop for the throttle capillary tube 7.

Am verdampferseitigen Ende des Zwischenrohres 11 ist eine Aufdornung 23 vorgeshen, in die das Saugrohr 10 mit Lötpassung eingesteckt ist. So läßt sich eine besonders zuverlässige Cu/Al-Lötverbindung herstellen.At the evaporator-side end of the intermediate tube 11, a spike 23 is provided, into which the suction tube 10 is inserted with a solder fit. This enables a particularly reliable Cu / Al solder connection to be made.

Claims (4)

  1. An evaporator for a compressor-refrigerator produced from an evaporator plate (1) comprising two layers, between which refrigerant channels (2) extending meander-fashion and also an inlet zone (3) and an outlet zone (4) for the supply and discharge of the refrigerant are formed, the evaporator having a suction tube (10) which is connected to the outlet zone and can be connected to a suction side of the compressor, and a capillary tube (7) which supplies liquid refrigerant to the inlet zone (3) and which extends through the suction tube (10) outside the evaporator and can be connected to a liquefier, characterized by the arrangement of a guide tube (8) whose internal diameter is slightly larger than the external diameter of the capillary tube (7) and whose external diameter is substantially smaller than the internal diameter of the suction tube (10) and whose outer end discharges in the inlet zone (3), the inlet and outlet zones being separated from one another by the outer wall of the guide tube and a constriction (19) between the two evaporator plates, while the capillary tube (7) is disposed in a first length portion L1 of the guide tube (8) and terminates therein, the guide tube (8) having a following second length portion L2 which has a cross-section widened in comparison with the capillary flow cross-section and is connected to the inlet zone (3).
  2. An evaporator according to claim 1, characterized in that the guide tube (8) has a narrowed portion (22) as a stop for the evaporator side end of the capillary tube (7).
  3. An evaporator according to claim 2, characterized in that disposed between the suction tube (10) and a suction line to the compressor is an intermediate bent tube (11) through which the capillary tube (7) and the guide tube (8) extends, and viewed in the direction of flow, the narrowed portion (22) lies downstream of the lead-through (20) of the intermediate tube (11) and therefore inside the zone formed by the intermediate tube (11), the suction tube (10) and the inlet zone (3) of the refrigerant channel (2).
  4. An evaporator according to one of claims 1 to 3, characterized in that the outer end of the guide tube (8) is widened to form a funnel (21).
EP92110195A 1991-06-22 1992-06-17 Evaporator for a compressor-refrigerator Expired - Lifetime EP0520309B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP94113040A EP0629824B1 (en) 1991-06-22 1992-06-17 Evaporator for a compressor-refrigerator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4120651 1991-06-22
DE4120651A DE4120651A1 (en) 1991-06-22 1991-06-22 EVAPORATOR FOR A COMPRESSOR COOLER

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP94113040.3 Division-Into 1992-06-17

Publications (2)

Publication Number Publication Date
EP0520309A1 EP0520309A1 (en) 1992-12-30
EP0520309B1 true EP0520309B1 (en) 1996-01-10

Family

ID=6434526

Family Applications (2)

Application Number Title Priority Date Filing Date
EP94113040A Expired - Lifetime EP0629824B1 (en) 1991-06-22 1992-06-17 Evaporator for a compressor-refrigerator
EP92110195A Expired - Lifetime EP0520309B1 (en) 1991-06-22 1992-06-17 Evaporator for a compressor-refrigerator

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP94113040A Expired - Lifetime EP0629824B1 (en) 1991-06-22 1992-06-17 Evaporator for a compressor-refrigerator

Country Status (11)

Country Link
US (1) US5269158A (en)
EP (2) EP0629824B1 (en)
JP (1) JPH05180535A (en)
BR (1) BR9202354A (en)
CA (1) CA2071761A1 (en)
DE (4) DE9116265U1 (en)
DK (2) DK0520309T3 (en)
ES (2) ES2084875T3 (en)
FI (1) FI922881A7 (en)
NO (1) NO176456C (en)
TR (1) TR26063A (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6110168A (en) * 1993-02-10 2000-08-29 Radiant Medical, Inc. Method and apparatus for controlling a patient's body temperature by in situ blood temperature modifications
JP3540075B2 (en) † 1995-12-11 2004-07-07 松下電器産業株式会社 Air conditioner
IT1288846B1 (en) * 1996-02-07 1998-09-25 Cga Comp Gen Allumino Spa ASSEMBLED FOR HEAT EXCHANGE AND RESPECTIVE PROCESS AND PRODUCTION PLANT
SE506059C2 (en) * 1996-02-28 1997-11-03 Electrolux Ab Device at a vaporizer
US5765393A (en) * 1997-05-28 1998-06-16 White Consolidated Industries, Inc. Capillary tube incorporated into last pass of condenser
DE29716572U1 (en) * 1997-09-15 1997-12-04 Liebherr-Hausgeräte GmbH, 88416 Ochsenhausen Refrigerator with a normal cold room and a freezer compartment
US6338727B1 (en) 1998-08-13 2002-01-15 Alsius Corporation Indwelling heat exchange catheter and method of using same
DE19840412A1 (en) * 1998-09-04 2000-03-09 Bsh Bosch Siemens Hausgeraete Evaporator board
DE19900701A1 (en) * 1999-01-11 2000-07-13 Vdm Evidal Gmbh Capillary suction pipe system for evaporator systems or refrigeration cycle systems
DE19907183A1 (en) * 1999-02-19 2000-08-24 Bsh Bosch Siemens Hausgeraete Evaporator board
RU2197689C2 (en) * 2000-03-31 2003-01-27 Шляховецкий Валентин Михайлович Adjustable throttling device
DE10055915A1 (en) * 2000-11-10 2002-05-23 Bsh Bosch Siemens Hausgeraete Coolant circuit for refrigeration machine has thermal contact between coolant feed and return lines concentrated on region of feed line upstream of capillary
DE10360899A1 (en) * 2003-12-23 2005-07-21 BSH Bosch und Siemens Hausgeräte GmbH Refrigeration unit with ultrasonically welded suction and throttle tube
DE202004007836U1 (en) * 2004-05-14 2004-07-15 Dometic S.A.R.L. cooling system
GB2418478A (en) * 2004-09-24 2006-03-29 Ti Group Automotive Sys Ltd A heat exchanger
DE102011006260A1 (en) * 2011-03-28 2012-10-04 BSH Bosch und Siemens Hausgeräte GmbH The refrigerator
DE102013021350A1 (en) * 2013-12-04 2015-06-11 Liebherr-Hausgeräte Lienz Gmbh Fridge and / or freezer
CN109869973B (en) * 2017-12-05 2022-03-29 松下电器产业株式会社 Freezing and refrigerating storage
EP4343231A4 (en) * 2021-11-19 2024-12-18 Samsung Electronics Co., Ltd. AIR CONDITIONING
EP4481304A4 (en) * 2022-02-14 2025-06-04 Daikin Industries, Ltd. HEAT SOURCE UNIT

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2776550A (en) * 1952-10-21 1957-01-08 Gen Electric Capillary adaptor
US2760346A (en) * 1953-10-01 1956-08-28 Gen Motors Corp Refrigerating apparatus of dissimilar metals
US2956421A (en) * 1957-04-04 1960-10-18 Borg Warner Capillary refrigerating systems
US2979924A (en) * 1958-03-17 1961-04-18 Gen Electric Refrigerating system composed of dissimilar metals
US2959027A (en) * 1958-11-28 1960-11-08 James O Ewing Combination evaporator-condenser assembly with concentric tubular construction
DE1242646B (en) * 1961-02-08 1967-06-22 Schmoele Metall R & G Cooling device for refrigerators
US3172272A (en) * 1962-06-19 1965-03-09 Westinghouse Electric Corp Air conditioning apparatus
US3531947A (en) * 1968-10-29 1970-10-06 Gen Electric Refrigeration system including refrigerant noise suppression
DE2231538A1 (en) * 1971-07-03 1973-01-11 Zanussi A Spa Industrie IMPROVEMENT TO REFRIGERATOR EVAPORATORS AND MANUFACTURING PROCESSES THEREFORE
US4086782A (en) * 1975-04-16 1978-05-02 Aktiebolaget Electrolux Noise reduction arrangement for a compressor type refrigerator
US4449853A (en) * 1983-04-11 1984-05-22 Mennella Robert J Flexible sleeve elbow for gas service lines
JPS6016277A (en) * 1984-06-13 1985-01-28 松下冷機株式会社 Tabular cooler
US4715187A (en) * 1986-09-29 1987-12-29 Vacuum Barrier Corporation Controlled cryogenic liquid delivery

Also Published As

Publication number Publication date
NO176456C (en) 1995-04-05
CA2071761A1 (en) 1992-12-23
DK0520309T3 (en) 1996-06-10
ES2084875T3 (en) 1996-05-16
BR9202354A (en) 1993-01-26
DE9116265U1 (en) 1992-09-03
ES2105444T3 (en) 1997-10-16
JPH05180535A (en) 1993-07-23
EP0629824B1 (en) 1997-07-30
EP0629824A1 (en) 1994-12-21
DE59208763D1 (en) 1997-09-04
DE4120651A1 (en) 1993-01-14
NO922427L (en) 1992-12-23
EP0520309A1 (en) 1992-12-30
NO922427D0 (en) 1992-06-19
US5269158A (en) 1993-12-14
DK0629824T3 (en) 1998-02-23
TR26063A (en) 1994-12-15
FI922881A7 (en) 1992-12-23
NO176456B (en) 1994-12-27
FI922881A0 (en) 1992-06-18
DE59204980D1 (en) 1996-02-22

Similar Documents

Publication Publication Date Title
EP0520309B1 (en) Evaporator for a compressor-refrigerator
EP1218674B1 (en) Air conditioning unit with an inner heat transfer unit
DE4130517B4 (en) Connection box for a heat exchanger, in particular for a refrigerant condenser
DE102006017432B4 (en) Inner heat exchanger with calibrated helical finned tube
DE19903833A1 (en) Integrated collector heat exchanger assembly
DE3327179A1 (en) EVAPORATOR
DE10004276A1 (en) Liquefier with integrated separating device for coolant circuit in car air conditioning, has separating unit comprising inlet and outlet at longitudinal ends with collector tank and separating unit inclined to horizontal
DE102018214080A1 (en) capacitor
DE4330214B4 (en) heat exchangers
DE19848379A1 (en) Arrangement for damping a pulsation of a fluid conveyed by a conveying device
DE3902046C2 (en) Heat exchanger with change in state of a medium, e.g. an evaporator, for an air conditioning system, in particular for a motor vehicle
DE69824454T2 (en) Heat Exchanger
DE202014004155U1 (en) Circular heat exchanger with molded dryer and refrigeration circuit with this heat exchanger
EP1325270B1 (en) Dryer for a refrigeration device
DE19800739B4 (en) air conditioning
EP1030134B1 (en) Evaporator plate
EP1310760B1 (en) Cooling medium condensor
DE3613395C1 (en) Compression refrigerating machine
DE19505108C2 (en) Accumulator for an air conditioning system operating according to the "orifice" principle, in particular a vehicle air conditioning system
DE9203857U1 (en) Refrigeration system
DE102012003913A1 (en) Cooling- and refrigerating appliance has refrigerant circuit with capillary tube extending directly in evaporator without bending before inlet of evaporator, and stopper for limiting insertion depth of capillary tube in evaporator
EP0793792B1 (en) Evaporator for a compressor-type capillary cooling unit
DE19900701A1 (en) Capillary suction pipe system for evaporator systems or refrigeration cycle systems
EP0044349A1 (en) Condensor, particularly for refrigeration plants and/or heat pumps
DE102004005621A1 (en) Apparatus for exchanging heat and method for producing such a device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE DK ES FR IT LI SE

17P Request for examination filed

Effective date: 19921202

17Q First examination report despatched

Effective date: 19931011

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE DK ES FR IT LI SE

XX Miscellaneous (additional remarks)

Free format text: TEILANMELDUNG 94113040.3 EINGEREICHT AM 17/06/92.

REF Corresponds to:

Ref document number: 59204980

Country of ref document: DE

Date of ref document: 19960222

ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SCHMAUDER & WANN PATENTANWALTSBUERO, INHABER KLAUS

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2084875

Country of ref document: ES

Kind code of ref document: T3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19960607

Year of fee payment: 5

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970630

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20020529

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20020531

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020603

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020611

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20020613

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030618

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030618

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040101

EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040227

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030618

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050617