WO1999056070A1 - Refrigerating device - Google Patents

Refrigerating device Download PDF

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Publication number
WO1999056070A1
WO1999056070A1 PCT/EP1999/002890 EP9902890W WO9956070A1 WO 1999056070 A1 WO1999056070 A1 WO 1999056070A1 EP 9902890 W EP9902890 W EP 9902890W WO 9956070 A1 WO9956070 A1 WO 9956070A1
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WO
WIPO (PCT)
Prior art keywords
evaporator
film
heat insulation
appliance according
heat
Prior art date
Application number
PCT/EP1999/002890
Other languages
German (de)
French (fr)
Inventor
Günter Gomoll
Michael Howe
Original Assignee
BSH Bosch und Siemens Hausgeräte 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 BSH Bosch und Siemens Hausgeräte GmbH filed Critical BSH Bosch und Siemens Hausgeräte GmbH
Priority to SI9930614T priority Critical patent/SI1075633T1/en
Priority to EP99920811A priority patent/EP1075633B1/en
Priority to DE59909856T priority patent/DE59909856D1/en
Publication of WO1999056070A1 publication Critical patent/WO1999056070A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/061—Walls with conduit means
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2201/00—Insulation
    • F25D2201/30—Insulation with respect to sound
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/08—Refrigerator tables

Definitions

  • the invention relates to a refrigeration device with a heat-insulating housing, within which at least one storage space lined with an inner lining is provided, which is cooled by a flat evaporator which is in heat-conducting contact with the inner liner and which is arranged in the heat insulation of the housing.
  • the evaporator board emits noises, for example, by injecting the refrigerant used for cooling into the evaporator board at high speeds, which are the result of turbulence caused by speed, which stimulate the evaporator board to vibrate. These vibrations are transmitted to the evaporator board by coupling the foam used for thermal insulation to the former. Since the heat insulation foam conducts structure-borne sound well, the flow and injection noises emitted by the evaporator board are emitted by the further coupling of the heat insulation foam to the outer housing shells of the cooling unit housing as airborne sound.
  • the sound waves emitted by the device housing which can be attributed to the non-constant flow and injection noises of the refrigerant into the evaporator board, act on the depending on the installation location of the cooling device - 2 -
  • the invention has for its object to improve a refrigerator according to the preamble of claim 1 with simple constructive measures with regard to sound emission.
  • the evaporator is at least partially provided on the heat insulation side with means by which a direct coupling of the evaporator to the heat insulation material is prevented.
  • the decoupling of the evaporator board from the heat insulation foam adhering to it prevents the evaporator board, which is excited as a result of turbulence caused by the refrigerant injected into the evaporator board at high speed in a boiling state, from vibrating in the form of injection noises, and this in noise onto the heat insulation foam recognized as a good conductor for structure-borne noise cannot be transmitted.
  • the injection noises which are radiated as airborne sound from the device housing in the case of evaporators conventionally arranged within the heat insulation foam, can be measured to a significantly reduced extent as sound on the device housing.
  • the means decoupling the evaporator from the heat insulation material on the heat insulation side have a particularly sound-reducing effect if, according to an advantageous embodiment of the object of the invention, it is provided that the means are designed to be vibration-damping.
  • the vibration-damping means are advantageously arranged in the vicinity of the injection point of the evaporator.
  • the evaporator board is particularly reliably decoupled from the heat insulation foam recognized as a good conductor for structure-borne noise if, according to a further preferred embodiment of the object of the invention, it is provided that the means are provided on the evaporator at least as far as possible on the heat insulation side. - 3 -
  • the means are designed as a film-like material.
  • the evaporator board can be equipped in a particularly simple manner for large-scale production with the sound-absorbing means at low production costs, especially when the film-like material is self-adhesive on one side.
  • the film-like material is designed to be flexible.
  • the flexible design of the material ensures that it is able to follow the surface of the evaporator board, which is insulated and covered by refrigerant channels, particularly safely and without great effort.
  • a film-like material has proven to be particularly cost-effective if, according to a next advantageous embodiment of the object of the invention, it is provided that the film-like material is designed as a heavy rubber mat.
  • a film-like material is particularly easy to process if, according to an alternative embodiment of the object of the invention, it is provided that the film-like material is designed as a bitumen film.
  • the film-like material increases the mass of the evaporator by at least 25%.
  • the mass of the evaporator is also increased, which at least largely prevents, if not completely prevents, excitation of the evaporator board as a result of the turbulence caused by the injected refrigerant.
  • the film-like material has sound-absorbing properties.
  • Fig. 1 in a simplified schematic representation of a table refrigerator with a ** * freezer, the freezer evaporator is provided on the heat insulation side with a mass-increasing damping film, in a sectional view from the side and
  • FIG. 2 shows a section of the table refrigerator according to FIG. 2 with the housing partially broken open and the damping film partially broken open, in a spatial view from the front.
  • FIG. 1 shows a table refrigerator 10, shown in a simplified schematic, whose housing 12, which is provided on the front with a heat-insulating door 11, has a plastic inner cladding 13, an outer cladding 14 spaced apart therefrom, and a thermal insulation foam 15 which is introduced into liquid starting components between the claddings 13 and 14, which adheres to the linings 13 and 14 due to its adhesive effect and thereby gives the heat-insulating housing 12 its rigidity.
  • a * ** freezer compartment 16 is provided in its upper section, which can be closed separately by a heat-insulating freezer door 17 and which is heat-insulated by a heat-insulating partition 18 on a normal cooling compartment 19 arranged below the freezer compartment 16.
  • the normal refrigeration compartment 19 is provided with evenly spaced superposed cooling goods shelves 20 and is cooled by an evaporator 22 belonging to an evaporator board and formed by a circuit board section, which is arranged on the rear side of the cooling compartment 19 opposite the door 11.
  • the evaporator 22 equipped with a refrigerant channel arrangement 23 produced according to the roll bond method is applied on the heat insulation side in heat-conducting contact to the rear of the inner lining 13 and is connected in terms of flow technology via connection channels (not specified) with a cross section of essentially U-shaped design.
  • the evaporator 24 molded out of a second circuit board section of the evaporator circuit board 21, like the - 5 -
  • the steamer 22 has a refrigerant channel arrangement 25 produced according to the roll bond method and is applied with its flat circuit board side like the evaporator 22 in heat-conducting contact to the outside of the thermal insulation foam 15 facing the inside of a freezer compartment inner lining 13.
  • the refrigerant channel arrangement 25 has a refrigerant injection point 26, which is produced by embossing a throttle tube (not shown in more detail) (see FIG. 2 in this regard).
  • the evaporator 24 is provided on its surface provided with the characteristics for the refrigerant channel arrangement 25 with a means for increasing its mass by at least 25%, which in the present case is designed as a foil-like material 27.
  • the film-like material 27, which can be formed, for example, by a bitumen film or a heavy rubber mat, covers the entire surface of the evaporator 24 facing the heat insulation screen 15 and is designed to be flexible, as a result of which the film-like mat 27 is able to match the contours of the refrigerant channel arrangement 25 consequences.
  • the heat insulation screen 15 recognized as a good conductor for structure-borne noise is no longer in direct contact with the evaporator 24, so that the latter is decoupled from the heat insulation foam 15.
  • a particularly intensive decoupling is achieved if, in addition to the properties used to increase the weight of the evaporator 24, the foil-like mat 27 also has vibration-damping properties.
  • the evaporator board is able to set vibrations capable of causing turbulence, which is caused by the refrigerant delivered to the injection point 26 at high speed in the boiling state, not only by the significantly more vibration-resistant design of the evaporator as a result of the increase in mass, but also by the damping effect of the Mat 27 intercepted.
  • a transmission of the excitation frequencies acting on the evaporator 24 due to the operation, caused by the turbulence of the injected refrigerant is at least prevented to such an extent that the sound emission of the device 10 is attainably reduced is.

Abstract

A refrigerating device (10) with a heat-insulating housing (12) which is provided with at least one storage area which is fitted with an inside lining (13) and refrigerated by means of a flat evaporator (22) that is placed in thermoconductive contact with the inside lining and is arranged in the thermal insulation of the housing. The invention is characterized in that at least sections of the evaporator (22) on the heat insulation side are provided with means (27) that prevent direct coupling between the evaporator and the heat insulating material (15).

Description

Kältegerät Refrigerator
Die Erfindung betrifft ein Kältegerät mit einem wärmeisoiierenden Gehäuse, innerhalb welchem wenigstens ein von einer Innenverkleidung ausgekleideter Lagerraum vorge- sehen ist, welcher von einem flächenhaften, in wärmeleitendem Kontakt mit der Innenverkleidung stehenden Verdampfer gekühlt ist, welcher in der Wärmeisolation des Gehäuses angeordnet ist.The invention relates to a refrigeration device with a heat-insulating housing, within which at least one storage space lined with an inner lining is provided, which is cooled by a flat evaporator which is in heat-conducting contact with the inner liner and which is arranged in the heat insulation of the housing.
Bei Kühlgeräten ist es seit langem Stand der Technik, daß deren zum Kühlen ihres Kühlraumes dienende Verdampferplatinen in die Wärmeisolation des Kühlgerätegehäuses eingebettet sind und in wärmeleitendem Kontakt mit einer den Kühlraum des Gerätes auskleidenden Innenverkleidung stehen. Diese Art der Verdampfer, welche auch als sogenannte cold-wall-Verdampfer bezeichnet sind, haben zwar den Vorteil, daß sie nutzvolumensteigemd außerhalb des Kühlraumes angeordnet und somit des- sen überwiegend glatten Wände meist leicht zu reinigen sind. Die durchaus gängige Maßnahme, die Verdampfer durch Einschäumen in den Wärmeisolationsschaum mit einzubetten, bringt bedingt durch den benetzenden Wärmeisolationsschaum jedoch mit sich, daß die Verdampferplatinen in direktem flächigen Kontakt mit dem Wärmeisolationsschaum stehen. Dies hat zur Folge, daß von der Verdampferplatine beispiels- weise durch das Einspritzen des zur Kühlung dienenden Kältemittels in die Verdampferplatine mit hohen Geschwindigkeiten Geräusche ausgehen, welche die Folge von geschwindigkeitsbedingt verursachten Turbulenzen sind, welche die Verdampferplatine zu Schwingungen anregen. Diese Schwingungen werden durch die Ankopplung des zur Wärmeisolierung verwendeten Schaumes an die Verdampferplatine an erste- ren übertragen. Da der Wärmeisolationsschaum Körperschall gut leitet, werden die von der Verdampferplatine abgegebenen Strömungs- und Einspritzgeräusche durch die weitere Ankopplung des Wärmeisolationsschaumes an die äußeren Gehäuseschalen des Kühlgerätegehäuses von diesem als Luftschall abgestrahlt. Die vom Gerätegehäuse abgestrahlten Schallwellen, welche auf die zeitlich nicht konstanten Strö- mungs- und Einspritzgeräusche des Kältemittels in die Verdampferplatine zurückzuführen sind, wirken je nach Aufstellungsort des Kühlgerätes auf den - 2 -In the case of cooling devices, it has long been state of the art that their evaporator boards, which are used to cool their cooling space, are embedded in the thermal insulation of the cooling device housing and are in heat-conducting contact with an inner lining lining the cooling space of the device. This type of evaporator, which is also referred to as a so-called cold-wall evaporator, has the advantage that it is arranged outside of the cooling space in a manner that increases the usable volume and its mostly smooth walls are usually easy to clean. The quite common measure of embedding the evaporator into the heat insulation foam by foaming, however, entails, due to the wetting heat insulation foam, that the evaporator boards are in direct, flat contact with the heat insulation foam. The result of this is that the evaporator board emits noises, for example, by injecting the refrigerant used for cooling into the evaporator board at high speeds, which are the result of turbulence caused by speed, which stimulate the evaporator board to vibrate. These vibrations are transmitted to the evaporator board by coupling the foam used for thermal insulation to the former. Since the heat insulation foam conducts structure-borne sound well, the flow and injection noises emitted by the evaporator board are emitted by the further coupling of the heat insulation foam to the outer housing shells of the cooling unit housing as airborne sound. The sound waves emitted by the device housing, which can be attributed to the non-constant flow and injection noises of the refrigerant into the evaporator board, act on the depending on the installation location of the cooling device - 2 -
Endverbraucher nicht nur störend, sondern können diesen hinsichtlich einer einwandfreien Funktion des Kühlgerätes in Zweifel setzen, da die Geräuschquelle für den Endverbraucher nicht lokalisierbar ist.End users are not only annoying, but can put them in doubt as to the proper functioning of the cooling unit, since the source of noise cannot be localized by the end user.
Der Erfindung liegt die Aufgabe zugrunde, ein Kältegerät gemäß dem Oberbegriff des Anspruches 1 mit einfachen konstruktiven Maßnahmen hinsichtlich der Schallabgabe zu verbessern.The invention has for its object to improve a refrigerator according to the preamble of claim 1 with simple constructive measures with regard to sound emission.
Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß der Verdampfer wär- meisolationsseitig zumindest abschnittsweise mit Mitteln versehen ist, durch welche eine direkte Ankopplung des Verdampfers an das Wärmeisolationsmaterial verhindert ist.This object is achieved according to the invention in that the evaporator is at least partially provided on the heat insulation side with means by which a direct coupling of the evaporator to the heat insulation material is prevented.
Durch die Entkopplung der Verdampferplatine von dem an sich an ihr anhaftenden Wärmeisolationsschaum ist verhindert, daß die infolge von Turbulenzen, hervorgerufen von dem mit hoher Geschwindigkeit in siedendem Zustand in die Verdampferplatine eingespritzten Kältemittel, zu Schwingungen in Form von Einspritzgeräuschen angeregte Verdampferplatine diese in Geräusche auf den als guten Leiter für Körperschall erkannten Wärmeisolationsschaum nicht übertragen kann. Letztendlich ist dadurch erreicht, daß die Einspritzgeräusche, welche bei herkömmlich innerhalb des Wärmeisolationsschaums angeordneten Verdampfern als Luftschall vom Gerätegehäuse abgestrahlt werden, in deutlich verringertem Maße als Schall am Gerätegehäuse meßbar sind.The decoupling of the evaporator board from the heat insulation foam adhering to it prevents the evaporator board, which is excited as a result of turbulence caused by the refrigerant injected into the evaporator board at high speed in a boiling state, from vibrating in the form of injection noises, and this in noise onto the heat insulation foam recognized as a good conductor for structure-borne noise cannot be transmitted. Ultimately it is achieved that the injection noises, which are radiated as airborne sound from the device housing in the case of evaporators conventionally arranged within the heat insulation foam, can be measured to a significantly reduced extent as sound on the device housing.
Besonders schallreduzierend für das Kühlgerät wirken sich die den Verdampfer wär- meisolationsseitig vom Wärmeisolationsmaterial entkoppelnden Mitteln aus, wenn nach einer vorteilhaften Ausgestaltung des Gegenstandes der Erfindung vorgesehen ist, daß die Mittel schwingungsdämpfend ausgebildet sind. Vorteilhafterweise sind die schwingungsdämpfenden Mittel im Nahbereich der Einspritzstelle des Verdampfers angebracht.The means decoupling the evaporator from the heat insulation material on the heat insulation side have a particularly sound-reducing effect if, according to an advantageous embodiment of the object of the invention, it is provided that the means are designed to be vibration-damping. The vibration-damping means are advantageously arranged in the vicinity of the injection point of the evaporator.
Besonders sicher an dem als guten Leiter für Körperschall erkannten Wärmeisolationsschaum entkoppelt ist die Verdampferplatine, wenn nach einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung vorgesehen ist, daß die Mittel zumindest weitestgehend flächendeckend am Verdampfer wärmeisolationsseitig vorgesehen sind. - 3 -The evaporator board is particularly reliably decoupled from the heat insulation foam recognized as a good conductor for structure-borne noise if, according to a further preferred embodiment of the object of the invention, it is provided that the means are provided on the evaporator at least as far as possible on the heat insulation side. - 3 -
Nach einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß die Mittel als folienähnlicher Werkstoff ausgebildet sind.According to a further preferred embodiment of the object of the invention it is provided that the means are designed as a film-like material.
Hierdurch läßt sich die Verdampferplatine auf besonders einfache Art und Weise großseriengerecht mit den schalldämmenden Mitteln bei niedrigen Fertigungskosten bestücken, insbesondere dann, wenn der folienartige Werkstoff einseitig selbstklebend ausgeführt ist.As a result, the evaporator board can be equipped in a particularly simple manner for large-scale production with the sound-absorbing means at low production costs, especially when the film-like material is self-adhesive on one side.
Entsprechend einer nächsten bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß der folienähnliche Werkstoff biegeweich ausgeführt ist.According to a next preferred embodiment of the object of the invention it is provided that the film-like material is designed to be flexible.
Durch die biegeweiche Ausführung des Werkstoffes ist sichergestellt, daß dieser besonders sicher und ohne großen Kraftaufwand der wärmeisolationsseitigen, von Käl- temittelkanälen überzogenen Oberfläche der Verdampferplatine zu folgen vermag.The flexible design of the material ensures that it is able to follow the surface of the evaporator board, which is insulated and covered by refrigerant channels, particularly safely and without great effort.
Als besonders kostengünstig hat sich ein folienartiger Werkstoff erwiesen, wenn nach einer nächsten vorteilhaften Ausgestaltung des Gegenstandes der Erfindung vorgesehen ist, daß der folienähnliche Werkstoff als Schwergummimatte ausgeführt ist.A film-like material has proven to be particularly cost-effective if, according to a next advantageous embodiment of the object of the invention, it is provided that the film-like material is designed as a heavy rubber mat.
Besonders leicht verarbeitbar ist ein folienartiger Werkstoff, wenn nach einer alternativen Ausführungsform des Gegenstandes der Erfindung vorgesehen ist, daß der folienähnliche Werkstoff als Bitumenfolie ausgebildet ist.A film-like material is particularly easy to process if, according to an alternative embodiment of the object of the invention, it is provided that the film-like material is designed as a bitumen film.
Entsprechend einer nächsten bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß der folienähnliche Werkstoff die Masse des Verdampfers um wenigstens 25% erhöht.According to a next preferred embodiment of the object of the invention, it is provided that the film-like material increases the mass of the evaporator by at least 25%.
Hierdurch ist neben der Entkopplung der Verdampferplatine von dem als guten Leiter für Körperschall erkannten Wärmeisolationsschaum zugleich eine Massenerhöhung des Verdampfers erreicht, welche eine Anregung der Verdampferplatine infolge der durch das eingespritzte Kältemittel verursachten Turbulenzen zumindest weitestge- hend unterbindet, wenn nicht ganz und gar vermeidet.As a result, in addition to the decoupling of the evaporator board from the heat insulation foam recognized as a good conductor for structure-borne noise, the mass of the evaporator is also increased, which at least largely prevents, if not completely prevents, excitation of the evaporator board as a result of the turbulence caused by the injected refrigerant.
Besonders sicher ist eine auf die Strömungs- und Einspritzgeräusche an der Verdampferplatine zurückzuführende Abgabe von Luftschall am Gerätegehäuse vermieden, - 4 -The emission of airborne sound on the device housing due to the flow and injection noises on the evaporator board is particularly reliably avoided. - 4 -
wenn nach einer letzten bevorzugten Ausführungsform des Gegenstandes der Erfindung vorgesehen ist, daß der folienähnliche Werkstoff schallabsorbierende Eigenschaften aufweist.if according to a last preferred embodiment of the object of the invention it is provided that the film-like material has sound-absorbing properties.
Es zeigen:Show it:
Fig. 1 in vereinfachter schematischer Darstellung einen Tischkühlschrank mit einem ***-Gefrierfach, dessen Gefrierfachverdampfer wärmeisolations- seitig mit einer seine Masse erhöhenden Dämpfungsfolie versehen ist, in Schnittdarstellung von der Seite undFig. 1 in a simplified schematic representation of a table refrigerator with a ** * freezer, the freezer evaporator is provided on the heat insulation side with a mass-increasing damping film, in a sectional view from the side and
Fig. 2 ausschnittsweise den Tischkühlschrank gemäß Fig. 2 mit teilweise aufgebrochen dargestelltem Gehäuse und teilweise aufgebrochener Dämpfungsfolie, in raumbildlicher Ansicht von vorne.FIG. 2 shows a section of the table refrigerator according to FIG. 2 with the housing partially broken open and the damping film partially broken open, in a spatial view from the front.
Fig. 1 zeigt einen vereinfacht schematisch dargestellten Tischkühlschrank 10, dessen frontseitig mit einer wärmeisolierenden Tür 11 versehenes Gehäuse 12 eine Kunst- stoffinnenverkleidung 13, eine dazu beabstandete Außenverkleidung 14 und einen in flüssigen Ausgangskomponenten zwischen den Verkleidungen 13 und 14 eingebrach- ten Wärmeisolationsschaum 15 aufweist, welcher durch seine adhäsive Wirkung an den Verkleidungen 13 und 14 anhaftet und dadurch dem wärmeisolierenden Gehäuse 12 seine Steif igkeit verleiht. Innerhalb des wärmeisolierenden Gehäuses 12 ist in dessen oberem Abschnitt ein ***-Gefrierfach 16 vorgesehen, welches durch eine wärmeisolierend ausgeführte Gefrierfachtür 17 separat verschließbar ist und welches durch eine wärmeisolierende Zwischenwand 18 an einem unterhalb dem Gefrierfach 16 angeordneten Normalkühlfach 19 wärmeisolierend getrennt ist. Das Normalkühlfach 19 ist mit in gleichmäßigen Abständen übereinander angeordneten, zur Ablage von Kühlgut dienenden Kühlgutablagen 20 versehen und von einem zu einer Verdampferplatine gehörenden, durch einen Platinenabschnitt gebildeten Verdampfer 22 gekühlt, welcher an der der Tür 11 gegenüberliegenden Rückseite des Kühlfaches 19 angeordnet ist. Der mit einer nach dem Rollbond-Verfahren hergestellten Kältemittelkanalanordnung 23 ausgestattete Verdampfer 22 ist wärmeisolationsseitig in wärmeleitendem Kontakt auf die Rückseite der Innenverkleidung 13 aufgebracht und über nicht näher bezeichnete Verbindungskanäle mit einem Querschnitt im wesentlichen U-förmig ausgebilde- ten Verdampfer 24 strömungstechnisch verbunden. Der aus einem zweiten Platinenabschnitt der Verdampferplatine 21 herausgeformte Verdampfer 24 weist wie der Ver- - 5 -1 shows a table refrigerator 10, shown in a simplified schematic, whose housing 12, which is provided on the front with a heat-insulating door 11, has a plastic inner cladding 13, an outer cladding 14 spaced apart therefrom, and a thermal insulation foam 15 which is introduced into liquid starting components between the claddings 13 and 14, which adheres to the linings 13 and 14 due to its adhesive effect and thereby gives the heat-insulating housing 12 its rigidity. Within the heat-insulating housing 12, a * ** freezer compartment 16 is provided in its upper section, which can be closed separately by a heat-insulating freezer door 17 and which is heat-insulated by a heat-insulating partition 18 on a normal cooling compartment 19 arranged below the freezer compartment 16. The normal refrigeration compartment 19 is provided with evenly spaced superposed cooling goods shelves 20 and is cooled by an evaporator 22 belonging to an evaporator board and formed by a circuit board section, which is arranged on the rear side of the cooling compartment 19 opposite the door 11. The evaporator 22 equipped with a refrigerant channel arrangement 23 produced according to the roll bond method is applied on the heat insulation side in heat-conducting contact to the rear of the inner lining 13 and is connected in terms of flow technology via connection channels (not specified) with a cross section of essentially U-shaped design. The evaporator 24 molded out of a second circuit board section of the evaporator circuit board 21, like the - 5 -
dampfer 22 eine nach dem Rollbond-Verfahren hergestellte Kältemittelkanalanordnung 25 auf und ist mit seiner ebenen Platinenseite wie der Verdampfer 22 in wärmeleitendem Kontakt auf die dem Wärmeisolationsschaum 15 zugewandte Außenseite der in ein Gefrierfachinnenverkleidung 13 aufgebracht. Die Kältemittelkanalanordnung 25 weist eine Kältemitteleinspritzstelle 26 auf, welche durch Prägung eines nicht näher dargestellten Drosselrohres erzeugt ist (siehe hierzu Fig. 2).steamer 22 has a refrigerant channel arrangement 25 produced according to the roll bond method and is applied with its flat circuit board side like the evaporator 22 in heat-conducting contact to the outside of the thermal insulation foam 15 facing the inside of a freezer compartment inner lining 13. The refrigerant channel arrangement 25 has a refrigerant injection point 26, which is produced by embossing a throttle tube (not shown in more detail) (see FIG. 2 in this regard).
Wie insbesondere aus Fig. 2 hervorgeht, ist der Verdampfer 24 auf seiner mit den Ausprägungen für die Kältemittelkanalanordnung 25 versehenen Oberfläche mit einer zur Erhöhung seiner Masse um wenigstens 25% dienenden Mitteln versehen, welche im vorliegenden Fall als folienähnlicher Werkstoff 27 ausgebildet ist. Der folienähnliche Werkstoff 27, welcher beispielsweise durch eine Bitumenfolie oder eine Schwergummimatte gebildet sein kann, bedeckt die gesamte, den Wärmeisolationsschirm 15 zugewandte Oberfläche des Verdampfers 24 und ist biegeweich ausgeführt, wodurch die folienähnliche Matte 27 in der Lage ist, den Konturen der Kältemittelkanalanordnung 25 zu folgen. Durch die beispielsweise auf die wärmeisolationsseitige Oberfläche des Verdampfers 24 aufgeklebte folienähnliche Matte 27 ist der als guter Leiter für Körperschall erkannte Wärmeisolationsschirm 15 nicht mehr direkt mit dem Verdampfer 24 kontaktiert, so daß letzterer von dem Wärmeisolationsschaum 15 entkoppelt ist. Eine besonders intensive Entkopplung ist dann erreicht, wenn die folienähnliche Matte 27 neben den zur Gewichtserhöhung des Verdampfers 24 dienenden Eigenschaften zusätzlich schwingungsdämpfende Eigenschaften aufweist. In diesem Fall sind die Verdampferplatine in Schwingungen zu versetzen vermögenden Turbulenzen, welche durch das mit hoher Geschwindigkeit in siedendem Zustand zur Einspritzstelle 26 geförderte Kältemittel verursacht werden, nicht nur durch die infolge der Masseerhöhung deutlich schwinungssteifere Ausbildung des Verdampfers, sondern zusätzlich durch die dämpfende Wirkung der Matte 27 abgefangen. Allein durch die Entkopplung des Verdampfers 24 vom Wärmeisolationsschaum 15 durch die folienähnliche Matte 27 ist eine Übertragung der betriebsbedingt auf den Verdampfer 24 einwirkenden Erre- gerfrequenzen, hervorgerufen durch die sich bildenden Turbulenzen des eingespritzten Kältemittels zumindest soweit unterbunden, daß die Schallemission des Gerätes 10 erreichbar gesenkt ist. As can be seen in particular from FIG. 2, the evaporator 24 is provided on its surface provided with the characteristics for the refrigerant channel arrangement 25 with a means for increasing its mass by at least 25%, which in the present case is designed as a foil-like material 27. The film-like material 27, which can be formed, for example, by a bitumen film or a heavy rubber mat, covers the entire surface of the evaporator 24 facing the heat insulation screen 15 and is designed to be flexible, as a result of which the film-like mat 27 is able to match the contours of the refrigerant channel arrangement 25 consequences. Due to the foil-like mat 27, for example glued to the heat insulation-side surface of the evaporator 24, the heat insulation screen 15 recognized as a good conductor for structure-borne noise is no longer in direct contact with the evaporator 24, so that the latter is decoupled from the heat insulation foam 15. A particularly intensive decoupling is achieved if, in addition to the properties used to increase the weight of the evaporator 24, the foil-like mat 27 also has vibration-damping properties. In this case, the evaporator board is able to set vibrations capable of causing turbulence, which is caused by the refrigerant delivered to the injection point 26 at high speed in the boiling state, not only by the significantly more vibration-resistant design of the evaporator as a result of the increase in mass, but also by the damping effect of the Mat 27 intercepted. Simply by decoupling the evaporator 24 from the heat insulation foam 15 through the foil-like mat 27, a transmission of the excitation frequencies acting on the evaporator 24 due to the operation, caused by the turbulence of the injected refrigerant, is at least prevented to such an extent that the sound emission of the device 10 is attainably reduced is.

Claims

- 6 -Patentansprüche - 6 patent claims
1. Kältegerät mit einem wärmeisolierenden Gehäuse, innerhalb welchem wenigstens ein von einer Innenverkieidung ausgekleideter Lagerraum vorgese- hen ist, welcher von einem flächenhaften, in wärmeleitenden Kontakt mit der1. Refrigeration device with a heat-insulating housing, within which at least one storage space is provided which is lined with an inner covering and which has a flat, in heat-conducting contact with the
Innenverkleidung stehenden Verdampfer gekühlt ist, welcher in der Wärmeisolation des Gehäuses angeordnet ist, d a d u r c h g e k e n n z e i c h n e t, daß der Verdampfer (24) wärmeisolationsseitig zumindest abschnittsweise mit Mitteln (27) versehen ist, durch welche eine direkte Ankopplung des Verdampfers (24) an das Wärmeisolationsmaterial (15) verhindert ist.The interior lining of the evaporator, which is arranged in the heat insulation of the housing, is cooled, characterized in that the evaporator (24) is provided, at least in sections, on the heat insulation side with means (27) by means of which the evaporator (24) is directly coupled to the heat insulation material (15). is prevented.
2. Kältegerät nach Anspruch 1 , dadurch gekennzeichnet, daß die Mittel (27) schwingungsdämpfend ausgebildet sind.2. Refrigerating appliance according to claim 1, characterized in that the means (27) are designed to dampen vibrations.
3. Kältegerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Mittel3. Refrigerating appliance according to claim 1 or 2, characterized in that the means
(27) zumindest weitestgehend flächendeckend am Verdampfer (24) wärmeisolationsseitig vorgesehen sind.(27) are provided at least as far as possible on the heat insulation side on the evaporator (24).
4. Kältegerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Mittel als folienähnlicher Werkstoff (27) ausgebildet sind.4. Refrigerating appliance according to one of claims 1 to 3, characterized in that the means are designed as a film-like material (27).
5. Kältegerät nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der folienähnliche Werkstoff (27) biegeweich ausgeführt ist.5. Refrigerating appliance according to one of claims 1 to 4, characterized in that the film-like material (27) is designed to be flexible.
6. Kältegerät nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der folienähnliche Werkstoff (27) als Schwergummimatte ausgebildet ist.6. Refrigerating appliance according to one of claims 1 to 5, characterized in that the film-like material (27) is designed as a heavy rubber mat.
7. Kältegerät nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der folienähnliche Werkstoff (27) als Bitumenfolie ausgebildet ist. - 7 -7. Refrigerating appliance according to one of claims 1 to 5, characterized in that the film-like material (27) is designed as a bitumen film. - 7 -
8. Kältegerät nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der folienähnliche Werkstoff (27) die Masse des Verdampfers (24) um wenigstens 25% erhöht.8. Refrigerating appliance according to one of claims 1 to 7, characterized in that the film-like material (27) increases the mass of the evaporator (24) by at least 25%.
9. Kältegerät nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der folienähnliche Werkstoff (27) schallabsorbierende Eigenschaften aufweist. 9. Refrigerating appliance according to one of claims 1 to 8, characterized in that the film-like material (27) has sound-absorbing properties.
PCT/EP1999/002890 1998-04-28 1999-04-28 Refrigerating device WO1999056070A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SI9930614T SI1075633T1 (en) 1998-04-28 1999-04-28 Refrigerating device
EP99920811A EP1075633B1 (en) 1998-04-28 1999-04-28 Refrigerating device
DE59909856T DE59909856D1 (en) 1998-04-28 1999-04-28 COOLING UNIT

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19818995.8 1998-04-28
DE19818995A DE19818995A1 (en) 1998-04-28 1998-04-28 Refrigerator

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ES (1) ES2224654T3 (en)
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Publication number Priority date Publication date Assignee Title
DE10218826B4 (en) * 2002-04-26 2007-03-22 BSH Bosch und Siemens Hausgeräte GmbH Heat exchanger for a refrigeration device and method for producing a heat exchanger
CN1309998C (en) 2002-04-26 2007-04-11 Bsh博施及西门子家用器具有限公司 Heat exchanger for a refrigerator and method for the production of a heat exchanger
DE102010003825A1 (en) * 2010-04-09 2011-10-13 BSH Bosch und Siemens Hausgeräte GmbH Wire tube heat exchanger, process for its production and this refrigerating appliance
DE102011078319A1 (en) * 2011-06-29 2013-01-03 BSH Bosch und Siemens Hausgeräte GmbH The refrigerator
DE102012202320A1 (en) 2012-02-16 2013-08-22 BSH Bosch und Siemens Hausgeräte GmbH Refrigerating appliance, in particular household refrigerating appliance, and method for its production

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GB973994A (en) * 1963-08-01 1964-11-04 Lec Refrigeration Ltd Bottle cooler
DE2020205A1 (en) * 1970-04-25 1971-11-11 Bauknecht Gmbh G Process for the production of a body of a refrigerator or the like.
JPH0842943A (en) * 1994-07-29 1996-02-16 Hitachi Ltd Vibration-proof weight for refrigerator
EP0697277A2 (en) * 1994-07-05 1996-02-21 CWW-GERKO Akustik GmbH & Co. KG Heat and sound reducing coating
US5669232A (en) * 1994-11-22 1997-09-23 Sanyo Electric Co., Ltd. Refrigerating unit
EP0806617A2 (en) * 1996-05-06 1997-11-12 Whirlpool Corporation Method for producing evaporators for refrigeration circuits, and the evaporator obtained
US5712033A (en) * 1996-08-05 1998-01-27 Owens-Corning Fiberglass Technology, Inc. Asphalt-containing organic fibers

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB973994A (en) * 1963-08-01 1964-11-04 Lec Refrigeration Ltd Bottle cooler
DE2020205A1 (en) * 1970-04-25 1971-11-11 Bauknecht Gmbh G Process for the production of a body of a refrigerator or the like.
EP0697277A2 (en) * 1994-07-05 1996-02-21 CWW-GERKO Akustik GmbH & Co. KG Heat and sound reducing coating
JPH0842943A (en) * 1994-07-29 1996-02-16 Hitachi Ltd Vibration-proof weight for refrigerator
US5669232A (en) * 1994-11-22 1997-09-23 Sanyo Electric Co., Ltd. Refrigerating unit
EP0806617A2 (en) * 1996-05-06 1997-11-12 Whirlpool Corporation Method for producing evaporators for refrigeration circuits, and the evaporator obtained
US5712033A (en) * 1996-08-05 1998-01-27 Owens-Corning Fiberglass Technology, Inc. Asphalt-containing organic fibers

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TR200002910T2 (en) 2001-02-21
EP1075633A1 (en) 2001-02-14
DE59909856D1 (en) 2004-08-05
EP1075633B1 (en) 2004-06-30
DE19818995A1 (en) 1999-11-04
ES2224654T3 (en) 2005-03-01

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