EP0732554A2 - Evaporator, in particular for compressor-operated domestic refrigerators - Google Patents

Evaporator, in particular for compressor-operated domestic refrigerators Download PDF

Info

Publication number
EP0732554A2
EP0732554A2 EP96101434A EP96101434A EP0732554A2 EP 0732554 A2 EP0732554 A2 EP 0732554A2 EP 96101434 A EP96101434 A EP 96101434A EP 96101434 A EP96101434 A EP 96101434A EP 0732554 A2 EP0732554 A2 EP 0732554A2
Authority
EP
European Patent Office
Prior art keywords
evaporator
sections
section
refrigerant
cooling capacity
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.)
Granted
Application number
EP96101434A
Other languages
German (de)
French (fr)
Other versions
EP0732554B1 (en
EP0732554A3 (en
Inventor
Detlef Cieslik
Alexander Dipl.-Ing. Rupp (Fh)
Friedrich Dipl.-Ing. Arnold
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.)
BSH Hausgeraete GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0732554A2 publication Critical patent/EP0732554A2/en
Publication of EP0732554A3 publication Critical patent/EP0732554A3/en
Application granted granted Critical
Publication of EP0732554B1 publication Critical patent/EP0732554B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00Evaporators; Condensers
    • F25B39/02Evaporators
    • F25B39/022Evaporators with plate-like or laminated elements
    • F25B39/024Evaporators with plate-like or laminated elements with elements constructed in the shape of a hollow panel

Definitions

  • the invention relates to an evaporator, in particular for compressor-operated household refrigeration appliances, with at least two evaporator sections serving as heat exchange surfaces, to which the refrigerant conveyed by the compressor is fed via injection points, and which are connected to form a coherent sheet metal plate.
  • DE-OS 38 04 863 shows and describes an evaporator board which is suitable for use in a cooling device with three thermally separated cooling compartments, each of which is cooled by an evaporator section of the board-like evaporator.
  • Each of the evaporator sections is assigned an injection pipe which serves to reduce the pressure of the refrigerant conveyed by a compressor and which is arranged in a tongue of the evaporator board.
  • the supply channels for the refrigerant adjoining the injection pipes to the refrigerant channel arrangements of the individual evaporator sections are along a circuit board area common to all three evaporator sections brought up to the respective channel arrangement of the evaporator section, as a result of which the refrigerant supply channel sections overlap.
  • each of the evaporator sections is equipped on its heat exchange surface with an injection point for the refrigerant, and in that the evaporator sections within the sheet metal plate are largely thermally decoupled from one another.
  • the decentralized injection point which is assigned to each evaporator section, ensures that the evaporator section to be supplied with refrigerant is acted upon in a targeted manner, without the refrigerant supply channels leading through one of the evaporator sections leading to the other evaporator section inadvertently influencing the temperature of this evaporator section.
  • evaporator sections are provided, one of which has a higher cooling capacity than the other two and each of the other evaporator sections is connected in series.
  • the evaporator section of higher cooling capacity is always additionally charged with liquid refrigerant when the evaporator section of lower cooling capacity is applied, and thus also cooled, so that the cooling demand cycles for the evaporator of higher cooling capacity can be increased accordingly.
  • Thermal decoupling is particularly easy to manufacture, but has a high degree of efficiency, if, according to a next preferred embodiment of the subject of the invention, it is provided that the evaporator sections are thermally decoupled by cutouts in the sheet metal plate between the individual evaporator sections.
  • each of the evaporator sections of lower cooling capacity has its injection point on the heat exchange surface in the vicinity of its evaporator section side facing away from the evaporator section of higher cooling capacity.
  • a particularly favorable and expedient refrigeration coupling of the two evaporator sections results if, according to a further advantageous embodiment of the subject of the invention, it is provided that the evaporator section with higher refrigeration capacity is connected to the other evaporator sections via a connecting web provided with refrigerant channels.
  • a refrigerant supply can be connected in a particularly simple manner if, according to a further preferred embodiment of the object of the invention, it is provided that the evaporator sections of lower cooling capacity have their injection point essentially in the middle on the evaporator section side facing away from the evaporator section of higher cooling capacity.
  • an evaporator board suitable for three different temperature ranges is produced by such a solution, which is inexpensive to produce due to the location for the injection points and at the same time is easy to handle.
  • the two evaporator sections of lower cooling capacity are fixed to one another by a retaining web provided between their adjacent section sides.
  • the retaining web between the two evaporator sections fixes and stabilizes the two evaporator sections with respect to one another, so that the handling of the evaporator board in the individual production sections is significantly improved.
  • the single figure shows a printed circuit board-like evaporator with three evaporator sections arranged within the surface of the printed circuit board.
  • a plate-like evaporator 10 for use in a multi-temperature household refrigeration device, not shown, is formed from two aluminum sheet metal plates joined together by pressure welding, between which the refrigerant channel arrangement of the evaporator 10 is introduced.
  • the evaporator 10 has three evaporator sections of different sizes in terms of their area fraction, of which the evaporator section 11 equipped with the largest area fraction is designed as a freezer compartment evaporator. This has a bottom area 12, a rear wall area 13 and a ceiling area 14, which serve as heat exchange surfaces and which are provided for this purpose with a refrigerant channel 15 through which refrigerant flows.
  • the refrigerant used to flow through the refrigerant channel 15 is supplied to the refrigerant channel 15 of the evaporator section 11 in the ceiling area 14 using an injection point 16 formed by stamping a throttle tube.
  • an evaporator section 17 is connected upstream of the evaporator section 11, which serves to cool a zero-degree compartment and which is mechanically connected to the former via a connecting web 18. Only a third of the length of the connecting web 18 is used for the mechanical connection, while the remaining length section is free from the evaporator section 11, so that the evaporator section 11, which is arranged due to its [-shaped installation shape with its at the bottom region 12 perpendicular to the plane of the evaporator section 17, is largely thermally decoupled from it.
  • a recess 19 is used for thermal decoupling between the adjacent side edges of the evaporator sections 11 and 17, which recess essentially extends over the entire width of the mutually adjacent evaporator section sides of the evaporator sections 11 u. 17 extends.
  • the evaporator section 17 is provided with a connection point on its transverse side located at the bottom in the installed position, approximately in the middle of its width.
  • a throttle tube (not shown), which serves as an injection tube and can be introduced into this for insertion, which is fixed in the connection point by means of a soldered connection and in a pressure-tight manner and which generates an injection point 20.
  • a refrigerant channel 21 which runs in turns, which extends with its turns into the vicinity of the lateral edges of the evaporator section 17 and which is designed as a double channel along the connecting web 18 up to its mechanical connection point on the evaporator section 11. From there, it is led through the rear wall area 13 into the ceiling area 14, where it is connected to the refrigerant channel arrangement of the evaporator section 11 at an integration point in the rear wall area 13 in the flow direction of the refrigerant after the injection point 16.
  • the evaporator section 11 is preceded by a further evaporator section 22, which serves to generate cold in a cooling compartment and is mechanically connected to the evaporator section 11 via a connecting web 23.
  • the connecting web 23 is provided on the longitudinal side of the evaporator board 10 opposite the connecting web 18 and runs along the bottom region 12 and the evaporator section 17, the connecting web 23 being fixed to both by narrow spacing tongues arranged at a distance from one another to avoid thermal bridges.
  • the connecting web 23 is provided with a refrigerant channel 25 designed as a double channel, which in the connection area of the connecting web 23 to the evaporator section 11 is brought together again to form a single-pass refrigerant channel and via the bottom area 12, the rear wall area 13 and the ceiling area 14, which lie after the injection point 16 Integration point in the rear wall area 13 is supplied.
  • the refrigerant channel 25 designed as a double channel is brought together again in the area of its transition to the evaporator section 22 to form a single channel.
  • This is arranged in turns, is arranged over the height of the evaporator section 22 and is connected to a connection point on its transverse side facing away from the evaporator section 17 and in the installed position of the evaporator 10.
  • This serves to receive an injection pipe, not shown, which is fixed in the connection point in a pressure-tight manner by a soldered connection on the evaporator section 22 to form an injection point 26.
  • a recess 27 is provided for their thermal decoupling, which is located between the connecting web 23 and a holding web 28 extends.
  • This is connected to both the evaporator section 17 and to the evaporator section 22 and serves to fix and stabilize the evaporator section 22 during the manufacturing process of the evaporator 10, being severed after the evaporator 10 has been fixed to a refrigeration device in order to conduct heat between the evaporator sections 17 and 22 as far as possible and thus to improve the thermal decoupling between these two evaporator sections 17 and 22.
  • Each of the evaporator sections 11, 17 and 22 can be acted upon with liquid refrigerant in a targeted manner via electrically controllable solenoid valves (not shown), the maganet valves being controlled as a function of a refrigeration request from the refrigeration compartments of the refrigeration device.
  • the liquid refrigerant supplied to the evaporator sections 11, 17 and 22 via the injection points 16, 20 and 26 assigned to them is sucked off by a refrigerant compressor after its evaporation in the gaseous state via a single suction point 29 arranged in the ceiling area 14 of the freezer compartment evaporator 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The evaporator (10) has at least two evaporator sections (11, 17, 22) with respective heat exchange surfaces, supplied with a refrigerant provided by a compressor via corresponding injection points (16, 20, 26). The evaporator sections are combined to form a common sheet metal plate, with slits providing in the surface of the plate providing relative thermal insulation of the evaporator sections from one another, allowing one of the evaporator sections to provide a heat exchange surface at a lower temp. than the other series sections.

Description

Die Erfindung betrifft einen Verdampfer, insbesondere für verdichterbetriebene Haushalts-Kältegeräte, mit wenigstens zwei als Wärmetauschflächen dienenden Verdampferabschnitten, welchen das von Kompressor geförderte Kältemittel über Einspritzstellen zugeführt ist, und welche zu einer zusammenhängenden Blechplatine verbunden sind.The invention relates to an evaporator, in particular for compressor-operated household refrigeration appliances, with at least two evaporator sections serving as heat exchange surfaces, to which the refrigerant conveyed by the compressor is fed via injection points, and which are connected to form a coherent sheet metal plate.

In der DE-OS 38 04 863 ist eine Verdampferplatine gezeigt und beschrieben, welche sich zum Einsatz in einem Kühlgerät mit drei thermisch voneinander getrennten Kühlfächern eignet, von denen jedes durch eine Verdampferabschnitt des platinenartigen Verdampfers gekühlt ist. Jedem der Verdampferabschnitte ist dabei ein zur Druckminderung des von einem Verdichter geförderten Kältemittels dienendes Einspritzrohr zugeordnet, welche in einer Zunge der Verdampferplatine angeordnet sind. Die an die Einspritzrohre anschließenden Zuführkanäle für das Kältemittel zu den Kältemittel-Kanalanordnungen der einzelnen Verdampferabschnitte sind entlang eines allen drei Verdampferabschnitten gemeinsamen Platinenbereichs an die jeweilige Kanalanordnung des Verdampferabschnitts herangeführt, wodurch es zu Überlappungen der Kältemittel-Zuführkanalabschnitte kommt. Bedingt durch diese Übelappungen der Kältemittel-Zuführkanäle findet trotz der für jeden Verdampferabschnitt vorgesehenen Einspritzstelle eine unerwünschte und nicht unerhebliche Temperaturbeeinflussung des von dem jeweiligen Verdampferabschnitt gekühlten Kühlfaches statt.DE-OS 38 04 863 shows and describes an evaporator board which is suitable for use in a cooling device with three thermally separated cooling compartments, each of which is cooled by an evaporator section of the board-like evaporator. Each of the evaporator sections is assigned an injection pipe which serves to reduce the pressure of the refrigerant conveyed by a compressor and which is arranged in a tongue of the evaporator board. The supply channels for the refrigerant adjoining the injection pipes to the refrigerant channel arrangements of the individual evaporator sections are along a circuit board area common to all three evaporator sections brought up to the respective channel arrangement of the evaporator section, as a result of which the refrigerant supply channel sections overlap. As a result of these fouling of the refrigerant supply channels, an undesirable and not inconsiderable influence on the temperature of the cooling compartment cooled by the respective evaporator section takes place despite the injection point provided for each evaporator section.

Aufgabe der Erfindung ist es, aufbauend auf diesem Stand der Technik, Maßnahmen vorzuschlagen, aufgrund welcher eine Temperaturbeeinflussung des jeweilig anderen Verdampferabschnitts vermieden ist.It is the object of the invention, based on this prior art, to propose measures on the basis of which the influence on the temperature of the respective other evaporator section is avoided.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß jeder der Verdampferabschnitte an seiner Wärmetauschfläche mit einer Einspritzstelle für das Kältemittel ausgestattet ist, und daß die Verdampferabschnitte innerhalb der Blechplatine thermisch voneinander weitestgehend entkoppelt sind.This object is achieved according to the invention in that each of the evaporator sections is equipped on its heat exchange surface with an injection point for the refrigerant, and in that the evaporator sections within the sheet metal plate are largely thermally decoupled from one another.

Durch die dezentrale, jedem Verdampferabschnitt separat zugeordnete Einspritzstelle ist eine gezielte Beaufschlagung des mit Kältemittel zu versorgenden Verdampferabschnitts gewährleistet, ohne daß über einen der Verdampferabschnitte hinwegführende Kältemittel-Zuführkanäle zum anderen Verdampferabschnitt die Temperatur dieses Verdampferabshnitts ungewollt beeinflussen. Durch eine derartige Ansteuerung der einzelnen Verdampferabschnitte ist demzufolge eine exakt steuerbare Abkühlung eines jeden durch einen solchen Verdampferabschnitt gekühlten Kühlfaches möglich.The decentralized injection point, which is assigned to each evaporator section, ensures that the evaporator section to be supplied with refrigerant is acted upon in a targeted manner, without the refrigerant supply channels leading through one of the evaporator sections leading to the other evaporator section inadvertently influencing the temperature of this evaporator section. By controlling the individual evaporator sections in this way, it is consequently possible to cool each cooling compartment cooled by such an evaporator section in a precisely controllable manner.

Nach einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß drei verdampferabschnitte vorgesehen sind, von denen einer eine höhere Kälteleistung als die beiden anderen aufweist und jedem der anderen Verdampferabschnitte in Reihenschaltung hochgeschaltet ist.According to a further preferred embodiment of the object of the invention it is provided that three evaporator sections are provided, one of which has a higher cooling capacity than the other two and each of the other evaporator sections is connected in series.

Durch eine derartige Verdampferanordnung wird der Verdampferabschnitt höherer Kälteleistung bei Beaufschlagung des Verdampferabschnitts geringerer Kälteleistung stets zusätzlich mit flüssigem Kältemittel beaufschlagt und somit mitgekühlt, so daß die Kältebedarfszyklen für den Verdampfer höherer Kälteleistung entsprechend vergrößert werden können.With such an evaporator arrangement, the evaporator section of higher cooling capacity is always additionally charged with liquid refrigerant when the evaporator section of lower cooling capacity is applied, and thus also cooled, so that the cooling demand cycles for the evaporator of higher cooling capacity can be increased accordingly.

Besonders einfach herzustellen, aber einen hohen Wirkungsgrad weist eine thermische Entkopplung auf, wenn nach einer nächsten bevorzugten Ausführungsform des Gegenstandes der Erfindung vorgesehen ist, daß die Verdampferabschnitte thermisch durch Aussparungen in der Blechplatine zwischen den einzelnen Verdampferabschnitten entkoppelt sind.Thermal decoupling is particularly easy to manufacture, but has a high degree of efficiency, if, according to a next preferred embodiment of the subject of the invention, it is provided that the evaporator sections are thermally decoupled by cutouts in the sheet metal plate between the individual evaporator sections.

Nach einer weiteren vorteilhaften Ausgestaltung des Gegenstandes der Erfindung ist vorgesehen, daß jeder der Verdampferabschnitte geringerer Kälteleistung seine Einspritzstelle an der Wärmetauschfläche im Nahbereich seiner vom Verdampferabschnitt höherer Kälteleistung abgewandten Verdampferabschnittsseite aufweist.According to a further advantageous embodiment of the subject matter of the invention, it is provided that each of the evaporator sections of lower cooling capacity has its injection point on the heat exchange surface in the vicinity of its evaporator section side facing away from the evaporator section of higher cooling capacity.

Durch eine derartige Lösung ist einerseits der Strömungsweg für das Kältemittel verkürzt und andererseits sind siphonartige Kältemittel-Kanalanordnungen innerhalb des Verdampferabschnitts vermieden, so daß die Geräuschentwicklung vor allem in den Stehzeiten des Kältemittelverdichters deutlich verringert sind.With such a solution, the flow path for the refrigerant is shortened on the one hand and siphon-like refrigerant channel arrangements within the evaporator section are avoided on the other hand, so that the noise development, particularly during the idle times of the refrigerant compressor, is significantly reduced.

Eine besonders günstige und zweckmäßige kältetechnische Ankopplung der beiden Verdampferabschnitte ergibt sich, wenn nach einer weiteren vorteilhaften Ausgestaltung des Gegenstandes der Erfindung vorgesehen ist, daß der Verdampferabschnitt höherer Kälteleistung mit den jeweils anderen Verdampferabschnitten über einen mit Kältemittelkanälen versehenen Verbindungssteg kältetechnisch verbunden sind.A particularly favorable and expedient refrigeration coupling of the two evaporator sections results if, according to a further advantageous embodiment of the subject of the invention, it is provided that the evaporator section with higher refrigeration capacity is connected to the other evaporator sections via a connecting web provided with refrigerant channels.

Auf besondsers einfache Weise ist eine Kältemittelzuführung anschließbar, wenn gemäß einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß die Verdampferabschnitte geringerer Kälteleistung ihre Einspritzstelle im wesentlichen in der Mitte an der vom dem Verdampferabschnitt höherer Kälteleistung abgewandten Verdampferabschnittseite aufweisen.A refrigerant supply can be connected in a particularly simple manner if, according to a further preferred embodiment of the object of the invention, it is provided that the evaporator sections of lower cooling capacity have their injection point essentially in the middle on the evaporator section side facing away from the evaporator section of higher cooling capacity.

Außerdem ist durch eine derartige Lösung eine für drei unterschiedliche Temperaturbereiche geeignete Verdampferplatine erzeugt, welche aufgrund des Ortes für die Einspritzstellen kostengünstig herstellbar und zugleich fertigungsfreundlich handhabbar ist.In addition, an evaporator board suitable for three different temperature ranges is produced by such a solution, which is inexpensive to produce due to the location for the injection points and at the same time is easy to handle.

Nach einer letzten bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß die beiden Verdampferabschnitte geringerer Kälteleistung zureinander durch einen zwischen ihren benachbarten Abschnittseiten vorgesehenen Haltesteg fixiert sind.According to a last preferred embodiment of the subject matter of the invention, it is provided that the two evaporator sections of lower cooling capacity are fixed to one another by a retaining web provided between their adjacent section sides.

Durch den Haltesteg zwischen den beiden Verdampferabschnitten ist eine Fixierung und Stabilisierung der beiden Verdampferabschnitte zueinander erreicht, so daß das Handling der Verdampferplatine in den einzelnen Fertigungsabschnitten deutlich verbessert ist.The retaining web between the two evaporator sections fixes and stabilizes the two evaporator sections with respect to one another, so that the handling of the evaporator board in the individual production sections is significantly improved.

Die Erfindung ist in der nachfolgenden Beschreibung am Beispiel eines in der beigefügten Zeichnung vereinfacht dargestellten Drei-Temperaturen-Verdampfers erläutert.The invention is explained in the following description using the example of a three-temperature evaporator shown in simplified form in the accompanying drawing.

Die einzige Figur zeigt einen platinenartigen Verdampfer in gestreckter Darstellung mit drei innerhalb der Platinenfläche angeordneten Verdampferabschnitten.The single figure shows a printed circuit board-like evaporator with three evaporator sections arranged within the surface of the printed circuit board.

Ein platinenartigen Verdampfer 10 zum Einsatz in einen nicht dargestellten Mehrtemperaturen-Haushalts-Kältegerät ist aus zwei miteinander durch Preßschweißen verbundenen Aluminium-Blechplatinen gebildet, zwischen welchen die Kältemittel-Kanalanordnung des Verdampfers 10 eingebracht ist. Der Verdampfer 10 weist drei hinsichtlich ihres Flächenanteils verschieden große Verdampferabschnitte auf, von denen der mit dem größten Flächenanteil ausgestattete verdampferabschnitt 11 als Gefrierfachverdampfer ausgebildet ist. Dieser weist einen Bodenbereich 12, einen Rückwandbereich 13 und einen Deckenbereich 14 auf, welche als Wärmetauschflächen dienen und welche zu diesem Zweck mit einem von Kältemittel durchströmten Kältemittelkanal 15 versehen sind. Das zur Durchströmung des Kältemittelkanals 15 dienende Kältemittel wird dabei im Deckenbereich 14 anhand einer durch Verprägen eines Drosselrohrs ausgebildeten Einspritzstelle 16 dem Kältemittelkanal 15 des Verdampferabschnitts 11 zugeführt.A plate-like evaporator 10 for use in a multi-temperature household refrigeration device, not shown, is formed from two aluminum sheet metal plates joined together by pressure welding, between which the refrigerant channel arrangement of the evaporator 10 is introduced. The evaporator 10 has three evaporator sections of different sizes in terms of their area fraction, of which the evaporator section 11 equipped with the largest area fraction is designed as a freezer compartment evaporator. This has a bottom area 12, a rear wall area 13 and a ceiling area 14, which serve as heat exchange surfaces and which are provided for this purpose with a refrigerant channel 15 through which refrigerant flows. The refrigerant used to flow through the refrigerant channel 15 is supplied to the refrigerant channel 15 of the evaporator section 11 in the ceiling area 14 using an injection point 16 formed by stamping a throttle tube.

Dem Verdampferabschnitt 11 ist strömungstechnisch ein Verdampferabschnitt 17 vorgeschaltet, welcher zur Kühlung eines Null-Grad-Faches dient und welcher über einen Verbindungssteg 18 mit ersteren mechanisch verbunden ist. Zur mechanischen Anbindung dient etwa nur ein Drittel der Länge des Verbindungssteges 18, während der verbleibende Längenabschnitt vom Verdampferabschnitt 11 freigespart ist, so daß der Verdampferabschnitt 11, welcher infolge seiner [-förmigen Einbauformgebung mit seiner am Bodenbereich 12 senkrecht zur Ebene des Verdampferabschnitts 17 angeordnet ist, weitestgehend thermisch von diesem entkoppelt ist. Für den Fall, daß der Verdampferabschnitt 11 nicht wie im vorliegenden Ausführungsbeispiel einer [-förmigen Formgebung unterworfen ist, sondern als ebene Platine ausgebildet ist, dient zur thermischen Entkopplung zwischen den benachbarten Seitenkanten der Verdampferabschnitte 11 und 17 eine Aussparung 19, welche sich im wesentlichen über die gesamte Breite der zueinander benachbart liegenden Verdampferabschnittsseiten der Verdampferabschnitte 11 u. 17 erstreckt. Gegenüber den unmittelbar benachbarten Verdampfer-Abschnittsseiten ist der Verdampferabschnitt 17 auf seiner in Einbaulage unten befindlichen Querseite in etwa mittig zu deren Breite mit einer Anschlußstelle versehen. In diese ist zur Einbringung ein als Einspritzrohr dienendes, nicht dargestellten Drosselrohres einbringbar, welches in der Anschlußstelle anhand einer Lötverbindung und druckdicht festgesetzt ist und welches eine Einspritzstelle 20 erzeugt. An die Einspritzstelle 20 ist ein in Windungen verlaufender Kältemittelkanal 21 angeschlossen, welcher sich mit seinen Windungen bis in den Nahbereich der seitlichen Ränder des Verdampferabschnitts 17 erstreckt und welcher entlang des Verbindungssteges 18 bis hin zu dessen mechanischen Anbindungsstelle an dem Verdampferabschnitt 11 als Doppelkanal ausgeführt ist. Von dort ist er einzügig über den Rückwandbereich 13 bis in den Deckenbereich 14 geführt, wo er an einer in Strömungsrichtung des Kältemittels nach der Einspritzstelle 16 liegenden Einbindungsstelle im Rückwandbereich 13 mit der Kältemittel-Kanalanordnung des Verdampferabschnitts 11 verbunden ist.In terms of flow technology, an evaporator section 17 is connected upstream of the evaporator section 11, which serves to cool a zero-degree compartment and which is mechanically connected to the former via a connecting web 18. Only a third of the length of the connecting web 18 is used for the mechanical connection, while the remaining length section is free from the evaporator section 11, so that the evaporator section 11, which is arranged due to its [-shaped installation shape with its at the bottom region 12 perpendicular to the plane of the evaporator section 17, is largely thermally decoupled from it. In the event that the evaporator section 11 is not, as in the present exemplary embodiment, subjected to a [-shaped shape, but is designed as a flat circuit board, a recess 19 is used for thermal decoupling between the adjacent side edges of the evaporator sections 11 and 17, which recess essentially extends over the entire width of the mutually adjacent evaporator section sides of the evaporator sections 11 u. 17 extends. Compared to the immediately adjacent evaporator section sides, the evaporator section 17 is provided with a connection point on its transverse side located at the bottom in the installed position, approximately in the middle of its width. A throttle tube (not shown), which serves as an injection tube and can be introduced into this for insertion, which is fixed in the connection point by means of a soldered connection and in a pressure-tight manner and which generates an injection point 20. Connected to the injection point 20 is a refrigerant channel 21 which runs in turns, which extends with its turns into the vicinity of the lateral edges of the evaporator section 17 and which is designed as a double channel along the connecting web 18 up to its mechanical connection point on the evaporator section 11. From there, it is led through the rear wall area 13 into the ceiling area 14, where it is connected to the refrigerant channel arrangement of the evaporator section 11 at an integration point in the rear wall area 13 in the flow direction of the refrigerant after the injection point 16.

Dem Verdampferabschnitt 11 ist kältetechnisch ein weiterer, zur Kälteerzeugung in einem Kühlfach dienender Verdampferabschnitt 22 vorgeschaltet, welcher über einen Verbindungssteg 23 mechanisch mit dem Verdampferabschnitt 11 mechanisch verbunden ist. Der Verbindungssteg 23 ist an der dem Verbindungssteg 18 gegenüberliegenden Längsseite der Verdampferplatine 10 vorgesehen und verläuft entlang des Bodenbereichs 12 und des Verdampferabschnitts 17, wobei der Verbindungssteg 23 an beiden zur Vermeidung von Wärmebrücken durch im Abstand voneinander angeordneten schmalen Haltezungen fixiert ist. Der Verbindungssteg 23 ist mit einem als Doppelkanal ausgeführten Kältemittelkanal 25 versehen, welcher im Anbindungsbereich des Verbindungssteges 23 an den Verdampferabschnitt 11 wieder zu einem einzügigen Kältemittelkanal zusammengeführt ist und über den Bodenbereich 12, dem Rückwandbereich 13 und dem Deckenbereich 14, der nach der Einspritzstelle 16 liegenden Einbindungsstelle im Rückwandbereich 13 zugeführt ist. Ebenso wie im Bereich der Anbindungsstelle des Verbindungssteges 23 an den Verdampferabschnitt 11 ist der als Doppelkanal ausgeführte Kältemittelkanal 25 im Bereich seines Übergangs zum Verdampferabschnitt 22 wieder zu einem einzügigen Kanal zusammengeführt. Dieser ist in Windungen verlaufend, über die Höhe des Verdampferabschnitts 22 angeordnet und an dessen vom Verdampferabschnitt 17 abgewandten, in Einbaulage des Verdampfers 10 untenliegenden Querseite mit einer Anschlußsstelle verbunden. Diese dient zur Aufnahme eines nicht dargestellten Einspritzrohres, welches in der Anschlußstelle durch eine Lötverbindung druckdicht am Verdampferabschnitt 22 zur Ausbildung einer Einspritzstelle 26 festgesetzt ist. Zwischen dem Verdampferabschnitt 22 und dem Verdampferabschnitt 17 ist ein zu deren thermischen Entkopplung dienende Aussparung 27 vorgesehen, welche sich zwischen dem Verbindungssteg 23 und einem Haltesteg 28 erstreckt. Dieser ist sowohl an dem Verdampferabschnitt 17 als auch an den Verdampferabschnitt 22 angebunden und dient zur Fixierung und Stabilisierung des Verdampferabschnitts 22 während des Fertigungsablaufes des Verdampfers 10, wobei er nach der Fixierung des Verdampfers 10 an einem Kältegerät durchtrennt ist, um die Wärmeleitung zwischen den Verdampferabschnitten 17 und 22 weitestgehend zu unterbinden und somit die thermische Entkopplung zwischen diesen beiden Verdampferabschnitten 17 und 22 zu verbessern.In terms of refrigeration technology, the evaporator section 11 is preceded by a further evaporator section 22, which serves to generate cold in a cooling compartment and is mechanically connected to the evaporator section 11 via a connecting web 23. The connecting web 23 is provided on the longitudinal side of the evaporator board 10 opposite the connecting web 18 and runs along the bottom region 12 and the evaporator section 17, the connecting web 23 being fixed to both by narrow spacing tongues arranged at a distance from one another to avoid thermal bridges. The connecting web 23 is provided with a refrigerant channel 25 designed as a double channel, which in the connection area of the connecting web 23 to the evaporator section 11 is brought together again to form a single-pass refrigerant channel and via the bottom area 12, the rear wall area 13 and the ceiling area 14, which lie after the injection point 16 Integration point in the rear wall area 13 is supplied. Just as in the area of the connection point of the connecting web 23 to the evaporator section 11, the refrigerant channel 25 designed as a double channel is brought together again in the area of its transition to the evaporator section 22 to form a single channel. This is arranged in turns, is arranged over the height of the evaporator section 22 and is connected to a connection point on its transverse side facing away from the evaporator section 17 and in the installed position of the evaporator 10. This serves to receive an injection pipe, not shown, which is fixed in the connection point in a pressure-tight manner by a soldered connection on the evaporator section 22 to form an injection point 26. Between the evaporator section 22 and the evaporator section 17, a recess 27 is provided for their thermal decoupling, which is located between the connecting web 23 and a holding web 28 extends. This is connected to both the evaporator section 17 and to the evaporator section 22 and serves to fix and stabilize the evaporator section 22 during the manufacturing process of the evaporator 10, being severed after the evaporator 10 has been fixed to a refrigeration device in order to conduct heat between the evaporator sections 17 and 22 as far as possible and thus to improve the thermal decoupling between these two evaporator sections 17 and 22.

Jeder der Verdampferabschnitte 11, 17 und 22 ist gezielt über elektrisch ansteuerbare, nicht gezeigte Magnetventile mit flüssigen Kältemittel beaufschlagbar, wobei die Maganetventile in Abhängigkeit einer Kälteanforderung aus den Kältefächern des Kältegerätes gesteuert sind.Each of the evaporator sections 11, 17 and 22 can be acted upon with liquid refrigerant in a targeted manner via electrically controllable solenoid valves (not shown), the maganet valves being controlled as a function of a refrigeration request from the refrigeration compartments of the refrigeration device.

Das den Verdampferabschnitten 11, 17 und 22 über die diesen zugeordneten Einspritzstellen 16, 20 und 26 zugeführte flüssige Kältemittel wird nach seinem Verdampfen in gasförmigen Zustand über eine einzige, im Deckenbereich 14 des Gefrierfachverdampfers 11 angeordneten Saugstelle 29 von einem Kältemittelverdichter abgesaugt.The liquid refrigerant supplied to the evaporator sections 11, 17 and 22 via the injection points 16, 20 and 26 assigned to them is sucked off by a refrigerant compressor after its evaporation in the gaseous state via a single suction point 29 arranged in the ceiling area 14 of the freezer compartment evaporator 11.

Claims (7)

Verdampfer, insbesondere für verdichterbetriebene Haushalts-Kältegeräte, mit wenigstens zwei als Wärmetauschflächen dienenden Verdampferabschnitten, welchen das von einem Kompressor geförderte Kältemittel über Einspritzstellen zugeführt ist und welche zu einer zusammenhängenden Blechplatine verbunden sind, dadurch gekennzeichnet, daß jeder der Verdampferabschnitte (11, 17, 22) an seiner Wärmetauschfläche mit einere Einspritzstelle (16, 20, 26) für das Kältemittel ausgestattet ist, und daß die Verdampferabschnitte (11, 17, 22) innerhalb der Blechplatine thermisch voneinander weitestgehend entkoppelt sind.Evaporator, in particular for compressor-operated household refrigeration appliances, with at least two evaporator sections serving as heat exchange surfaces, to which the refrigerant conveyed by a compressor is fed via injection points and which are connected to form a coherent sheet metal plate, characterized in that each of the evaporator sections (11, 17, 22 ) is equipped on its heat exchange surface with another injection point (16, 20, 26) for the refrigerant, and that the evaporator sections (11, 17, 22) are largely thermally decoupled from one another within the sheet metal plate. Verdampfer nach Anspruch 1, dadurch gekennzeichnet, daß drei Verdampferabschnitte (11, 17, 22) vorgesehen sind, von denen einer eine höhere Kälteleistung als die beiden anderen aufweist und jedem der anderen Verdampferabschnitte (17, 22) in Reihenschaltung nachgeschaltet ist.Evaporator according to claim 1, characterized in that three evaporator sections (11, 17, 22) are provided, one of which has a higher cooling capacity than the other two and each of the other evaporator sections (17, 22) is connected in series. Verdampfer nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Verdampferabschnitte (11, 17, 22) thermisch durch Aussparungen (19, 27) in der Blechplatine zwischen den einzelnen Verdampferabschnitten (11, 17, 22) entkoppelt sind.Evaporator according to one of claims 1 or 2, characterized in that the evaporator sections (11, 17, 22) are thermally decoupled through recesses (19, 27) in the sheet metal plate between the individual evaporator sections (11, 17, 22). Verdampfer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß jeder der Verdampferabschnitte (17, 22) geringerer Kälteleistung seine Einspritzstelle an der Wärmetauschfläche (20, 26) im Nahbereich seiner vom Verdampferabschnitt (11) höherer Kälteleistung abgewandten Verdampferabschnittsseite aufweist.Evaporator according to one of claims 1 to 3, characterized in that each of the evaporator sections (17, 22) of lower cooling capacity has its injection point on the heat exchange surface (20, 26) in the vicinity of its evaporator section side facing away from the evaporator section (11) of higher cooling capacity. Verdampfer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Verdampferabschnitt (11) höherer Kälteleistung mit den jeweils anderen Verdampferabschnitten (17, 22) über einen mit Kältemittelkanälen (15, 25) versehenen Verbindungssteg (18, 23) kältetechnisch verbunden sind.Evaporator according to one of claims 1 to 4, characterized in that the evaporator section (11) of higher refrigeration capacity is connected to the other evaporator sections (17, 22) via a connecting web (18, 23) provided with refrigerant channels (15, 25). Verdampfer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Verdampferabschnitte (17, 22) geringerer Kälteleistung ihre Einspritzstelle (20, 26) im wesentlichen in der Mitte an der vom Verdampferabschnitt (11) höherer Kälteleistung abgewandten Verdampferabschnittsseite aufweisen.Evaporator according to one of claims 1 to 5, characterized in that the evaporator sections (17, 22) of lower cooling capacity have their injection point (20, 26) substantially in the middle on the evaporator section side facing away from the evaporator section (11) of higher cooling capacity. Verdampfer nach Anspruch 6, dadurch gekennzeichnet, daß die beiden Verdampferabschnitte (17, 22) geringerer Kälteleistung zueinander durch einen zwischen ihren benachbarten Abschnittsseiten vorgesehenen Haltesteg (28) fixiert sind.Evaporator according to Claim 6, characterized in that the two evaporator sections (17, 22) of lower cooling capacity are fixed to one another by a retaining web (28) provided between their adjacent section sides.
EP96101434A 1995-03-16 1996-02-01 Evaporator, in particular for compressor-operated domestic refrigerators Expired - Lifetime EP0732554B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19509571 1995-03-16
DE19509571A DE19509571A1 (en) 1995-03-16 1995-03-16 Evaporators, in particular for compressor-operated household refrigeration devices

Publications (3)

Publication Number Publication Date
EP0732554A2 true EP0732554A2 (en) 1996-09-18
EP0732554A3 EP0732554A3 (en) 1997-03-12
EP0732554B1 EP0732554B1 (en) 2000-11-22

Family

ID=7756863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96101434A Expired - Lifetime EP0732554B1 (en) 1995-03-16 1996-02-01 Evaporator, in particular for compressor-operated domestic refrigerators

Country Status (4)

Country Link
EP (1) EP0732554B1 (en)
DE (2) DE19509571A1 (en)
ES (1) ES2153506T3 (en)
TR (1) TR199600151A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0917919A3 (en) * 1997-11-06 2001-04-11 Whirlpool Corporation Method for producing a one-piece evaporator for refrigeration circuits, and the evaporator obtained

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB856477A (en) * 1958-06-30 1960-12-14 Gen Motors Corp Improvements in or relating to refrigerators, and to methods of making evaporators therefor
DE1809673A1 (en) * 1968-11-19 1970-06-04 Ver Deutsche Metallwerke Ag Plate evaporator
DE3741140C1 (en) * 1987-12-04 1989-06-08 Schmoele Metall R & G Cooling plate
DE3804863A1 (en) * 1988-02-17 1989-08-31 Schmoele Metall R & G Cooling plate for a refrigerator
DE4141641A1 (en) * 1991-12-17 1993-06-24 Bosch Siemens Hausgeraete SECOND TEMPERATURE REFRIGERATOR
EP0602379A2 (en) * 1992-12-17 1994-06-22 Bosch-Siemens HausgerÀ¤te GmbH Refrigerator, especially multi-temperature refrigerator
EP0732553A2 (en) * 1995-03-16 1996-09-18 Bosch-Siemens HausgerÀ¤te GmbH Evaporator arrangement especially for compressor driven domestic refrigerators

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB856477A (en) * 1958-06-30 1960-12-14 Gen Motors Corp Improvements in or relating to refrigerators, and to methods of making evaporators therefor
DE1809673A1 (en) * 1968-11-19 1970-06-04 Ver Deutsche Metallwerke Ag Plate evaporator
DE3741140C1 (en) * 1987-12-04 1989-06-08 Schmoele Metall R & G Cooling plate
DE3804863A1 (en) * 1988-02-17 1989-08-31 Schmoele Metall R & G Cooling plate for a refrigerator
DE4141641A1 (en) * 1991-12-17 1993-06-24 Bosch Siemens Hausgeraete SECOND TEMPERATURE REFRIGERATOR
EP0602379A2 (en) * 1992-12-17 1994-06-22 Bosch-Siemens HausgerÀ¤te GmbH Refrigerator, especially multi-temperature refrigerator
EP0732553A2 (en) * 1995-03-16 1996-09-18 Bosch-Siemens HausgerÀ¤te GmbH Evaporator arrangement especially for compressor driven domestic refrigerators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0917919A3 (en) * 1997-11-06 2001-04-11 Whirlpool Corporation Method for producing a one-piece evaporator for refrigeration circuits, and the evaporator obtained

Also Published As

Publication number Publication date
DE19509571A1 (en) 1996-09-19
EP0732554B1 (en) 2000-11-22
DE59606153D1 (en) 2000-12-28
EP0732554A3 (en) 1997-03-12
ES2153506T3 (en) 2001-03-01
TR199600151A2 (en) 1996-11-21

Similar Documents

Publication Publication Date Title
DE60011616T2 (en) HEAT EXCHANGER WITH MULTICHANNEL TUBES
DE112012003634T5 (en) heat exchangers
EP2694890B1 (en) Domestic refrigerator having evaporator plates which are connected by means of webs
EP2638337A2 (en) Evaporator
DE3310236A1 (en) Refrigerant distributor for the evaporator of a refrigerator or heat pump
EP1712868A2 (en) Evaporator
EP2694889B1 (en) Domestic refrigerator having a refrigerant circuit system
EP0732554A2 (en) Evaporator, in particular for compressor-operated domestic refrigerators
EP1717530A2 (en) Heat exchanger, more particularly rear evaporator for automotive vehicle
DE102016224434A1 (en) Refrigerating appliance with several temperature zones
EP1040303A1 (en) Refrigerating device
EP2126484A1 (en) Heat exchanger assembly
DE202005008376U1 (en) Fridge and / or freezer
EP0732553B1 (en) Evaporator arrangement especially for compressor driven domestic refrigerators
DE102013223160A1 (en) Refrigerating appliance and finned evaporator for it
EP0795726B1 (en) Combined evaporator for freezing and refrigeration compartment of domestic refrigerator
DE102010040340A1 (en) Refrigeration unit with skin condenser
DE2936140C2 (en)
EP0918199A2 (en) Evaporator
DE2738752C2 (en) Heat pump system
DE3741140C1 (en) Cooling plate
EP0758732A2 (en) Refrigerator
DE60201554T2 (en) High-capacity evaporator for automotive air conditioning
EP1816426B1 (en) Heat exchanger assembly, in particular of a rear evaporator in a motor vehicle
EP0953812A2 (en) Refrigerating apparatus

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: A2

Designated state(s): DE ES FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE ES FR GB IT SE

17P Request for examination filed

Effective date: 19970828

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BSH BOSCH UND SIEMENS HAUSGERAETE GMBH

17Q First examination report despatched

Effective date: 19981014

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19981014

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT SE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20001122

REF Corresponds to:

Ref document number: 59606153

Country of ref document: DE

Date of ref document: 20001228

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN P. & C. S.N.C.

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2153506

Country of ref document: ES

Kind code of ref document: 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
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: SE

Payment date: 20040227

Year of fee payment: 9

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: 20050202

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

Ref country code: DE

Ref legal event code: R084

Ref document number: 59606153

Country of ref document: DE

Effective date: 20120207

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

Ref country code: FR

Payment date: 20120228

Year of fee payment: 17

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

Ref country code: IT

Payment date: 20120224

Year of fee payment: 17

Ref country code: GB

Payment date: 20120222

Year of fee payment: 17

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

Ref country code: ES

Payment date: 20120221

Year of fee payment: 17

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20130201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20131031

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

Effective date: 20130201

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

Ref country code: GB

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

Effective date: 20130201

Ref country code: FR

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

Effective date: 20130228

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20140408

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

Ref country code: ES

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

Effective date: 20130202

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

Ref country code: DE

Payment date: 20150228

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 59606153

Country of ref document: DE

Owner name: BSH HAUSGERAETE GMBH, DE

Free format text: FORMER OWNER: BSH BOSCH UND SIEMENS HAUSGERAETE GMBH, 81739 MUENCHEN, DE

Effective date: 20150408

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59606153

Country of ref document: DE