EP0504567B1 - Refrigerating apparatus, especially a domestic refrigerator or the like - Google Patents

Refrigerating apparatus, especially a domestic refrigerator or the like Download PDF

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Publication number
EP0504567B1
EP0504567B1 EP19920101812 EP92101812A EP0504567B1 EP 0504567 B1 EP0504567 B1 EP 0504567B1 EP 19920101812 EP19920101812 EP 19920101812 EP 92101812 A EP92101812 A EP 92101812A EP 0504567 B1 EP0504567 B1 EP 0504567B1
Authority
EP
European Patent Office
Prior art keywords
evaporator
protective tube
tube
housing
cooling device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19920101812
Other languages
German (de)
French (fr)
Other versions
EP0504567A1 (en
Inventor
Hans Haas
Jürgen Dipl.-Ing. Ballarin (FH)
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.)
BOSCH-SIEMENS HAUSGERAETE GMBH
Original Assignee
Individual
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Filing date
Publication date
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Publication of EP0504567A1 publication Critical patent/EP0504567A1/en
Application granted granted Critical
Publication of EP0504567B1 publication Critical patent/EP0504567B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/005—Mounting of control devices
    • 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
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/10—Sensors measuring the temperature of the evaporator

Definitions

  • the sensor tube bridging the spatial distance between the evaporator and the temperature controller either completely freely along the walls inside the device housing or at least in sections in a guide tube which runs in the heat-insulated walls of the device housing.
  • an electrically insulating protective tube which is made of flexible material in a hose-like manner in order not to hinder the laying of the sensor tube. It must be ensured here that the ends of the insulating protective tube cannot be moved in the axial direction, since otherwise there is a risk that locations on the sensor tube are unintentionally exposed, as a result of which the required safety against contact is no longer provided.
  • To the Secure fixing of the jacket are therefore clamps, clamps or the like. required, the attachment of which is difficult and costly.
  • the invention is therefore based on the object in cooling devices of the type described in more detail to determine the protective tube required for the electrical insulation of the sensor tube, so that the contact safety prescribed for the relevant electrical protection class of the device is ensured.
  • the protective tube is provided near its ends with an axial force-absorbing stop in the form of a deformation changing its outer diameter.
  • the ends can be securely fixed in a simple manner and secured against unintentional axial displacement, so that inadvertent exposure of the sensor tube is avoided.
  • the stop is designed as an annular bulge of the protective tube which is produced by compression.
  • the evaporator and the temperature regulator are provided with means for positively clamping the stops of the protective tube.
  • a household refrigerator designated 10 in FIG. 1 has a housing 12 which can be closed with a door 11, in the upper right corner region of which an evaporator 14 in the form of a box evaporator 13 is arranged behind an evaporator door 13.
  • the spatial distance between the temperature controller 18 and the evaporator 14 is bridged by a sensor tube 20 which bears against the inner wall of the housing 12 and is covered by a protective tube 21 over its free length.
  • the section of the sensor tube emerging directly behind the regulator / lamp housing 19 is inserted in a groove 22 arranged in the side wall of the housing 12, in which it is held securely by clamping points 23 arranged at intervals from one another.
  • the middle section of the sensor tube 20 is guided upwards in the throat between the side and rear walls of the housing 12 and is clamped there in a groove 25 formed between projecting guide strips 24 for the support gratings 15 and the rear wall of the housing 12.
  • the end section of the sensor tube 20 enveloped by the protective tube 21 is then guided in an arc from the rear wall of the housing 12 to the underside of the evaporator 14, which for this purpose is provided on the underside with a blind channel 27 for inserting its end. In this way, good heat transfer from the evaporator 14 to the end section of the sensor tube 20 is ensured.
  • the protective tube 21 enveloping the free length of the sensor tube 20, as can be seen in particular from FIG. 3, is provided near its ends with a stop 28 which absorbs axial forces and which is designed in the form of a deformation which changes the outer diameter of the protective tube.
  • these stops are designed as ring-shaped beads formed by compression of the protective tube, which on the one hand at corresponding points on the bottom of the evaporator 14 and on the other hand are positively clamped in the regulator-lamp housing 19. This can be done by clamping between two housing parts of the controller-lamp housing or by a corresponding deformation of the end of the blind channel 27 on the evaporator 14.
  • the protective tube 21 is connected to the free end of the sensor tube 21 assigned to the evaporator by clamping or the like. sealed watertight to prevent the ingress of moisture - such as condensation - and thus to ensure perfect electrical contact safety.

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

Description

Die Erfindung betrifft ein Kühlgerät, insb. einen Haushalts-Kühlschrank od.dgl., mit einem Verdampfer und einem in räumlichem Abstand dazu angeordneten Temperaturregler, sowie einem den Abstand zum Verdampfer überbrückenden Fühlerrohr, dessen freie Länge von einem Schutzrohr umhüllt ist. Ein solches Kühlgerät ist aus der DE-A-1 401 544 bekannt.The invention relates to a cooling device, in particular a household refrigerator or the like, with an evaporator and a temperature controller arranged at a spatial distance from it, and with a sensor tube bridging the distance to the evaporator, the free length of which is enveloped by a protective tube. Such a cooling device is known from DE-A-1 401 544.

Bei Kühlgeräten der genannten Art ist es üblich, das den räumlichen Abstand zwischen dem Verdampfer und dem Temperaturregler überbrückende Fühlerrohr entweder völlig frei entlang den Wänden im Innern des Gerätegehäuses oder wenigstens abschnittsweise in einem Führungsrohr zu verlegen, das in den wärmeisolierten Wänden des Gerätegehäuses verläuft. Aus Gründen der elektrischen Berührungssicherheit ist es dabei erforderlich, den freien Abschnitt des Fühlerrohres mit einem elektrisch isolierenden Schutzrohr zu umhüllen, das um das Verlegen des Fühlerrohres nicht zu behindern, schlauchartig aus flexiblem Werkstoff ausgeführt ist. Hierbei muß sichergestellt werden, daß sich die Enden des isolierenden Schutzrohres nicht in axialer Richtung verschieben lassen, da andernfalls die Gefahr besteht, daß Stellen des Fühlerrohres unbeabsichtigt freigelegt werden wodurch die geforderte Berührungssicherheit nicht mehr gegeben ist. Zum sicheren Festlegen des Mantels sind daher Klemmen, Schellen od.dgl. erforderlich, deren Anbringung schwierig und kostenaufwendig ist.In cooling devices of the type mentioned, it is customary to lay the sensor tube bridging the spatial distance between the evaporator and the temperature controller either completely freely along the walls inside the device housing or at least in sections in a guide tube which runs in the heat-insulated walls of the device housing. For reasons of electrical contact safety, it is necessary to cover the free section of the sensor tube with an electrically insulating protective tube, which is made of flexible material in a hose-like manner in order not to hinder the laying of the sensor tube. It must be ensured here that the ends of the insulating protective tube cannot be moved in the axial direction, since otherwise there is a risk that locations on the sensor tube are unintentionally exposed, as a result of which the required safety against contact is no longer provided. To the Secure fixing of the jacket are therefore clamps, clamps or the like. required, the attachment of which is difficult and costly.

Der Erfindung liegt daher die Aufgabe zugrunde, bei Kühlgeräten der eingangs näher bezeichneten Art das zur elektrischen Isolierung des Fühlerrohres erforderliche Schutzrohr sicher festzulegen, so daß die für die betreffende elektrische Schutzklasse des Gerätes vorgeschriebene Berührungssicherheit gewährleistet ist.The invention is therefore based on the object in cooling devices of the type described in more detail to determine the protective tube required for the electrical insulation of the sensor tube, so that the contact safety prescribed for the relevant electrical protection class of the device is ensured.

Diese Aufgabe wird nach der vorliegenden Erfindung dadurch gelöst, daß das Schutzrohr nahe seinen Enden mit einem axiale Kräfte aufnehmenden Anschlag in Form einer seinen äußeren Durchmesser verändernden Verformung versehen ist.This object is achieved according to the present invention in that the protective tube is provided near its ends with an axial force-absorbing stop in the form of a deformation changing its outer diameter.

Mit Hilfe der erfindungsgemäßen Ausbildung des Schutzrohres gelingt es, dessen Enden auf einfache Weise sicher festzulegen und gegen unbeabsichtigtes axiales Verschieben zu sichern, so daß dadurch ein unbeabsichtigtes Freilegen des Fühlerrohres vermieden wird.With the help of the design of the protective tube according to the invention, the ends can be securely fixed in a simple manner and secured against unintentional axial displacement, so that inadvertent exposure of the sensor tube is avoided.

Nach einer vorteilhaften Ausgestaltung des Gegenstandes der Erfindung ist vorgesehen, daß der Anschlag als ein durch Stauchung entstandener, ringförmiger Wulst des Schutzrohres ausgebildet ist.According to an advantageous embodiment of the object of the invention, it is provided that the stop is designed as an annular bulge of the protective tube which is produced by compression.

Als besonders günstig hat sich nach einer weiteren vorteilhaften Ausgestaltung des Gegenstandes der Erfindung erwiesen, daß der Verdampfer und der Temperaturregler mit Mitteln zum formschlüssigen Einspannen der Anschläge des Schutzrohres versehen sind.According to a further advantageous embodiment of the subject of the invention, it has proven particularly favorable that the evaporator and the temperature regulator are provided with means for positively clamping the stops of the protective tube.

Die Erfindung ist in der nachfolgenden Beschreibung anhand eines in der beigefügten Zeichnung vereinfacht dargestellten Ausführungsbeispieles im Zusammenhang mit einem Haushalts-Kühlschrank erläutert. Es zeigen:

Fig. 1
einen Haushalts-Kühlschrank mit einem Verdampfer und einem in räumlichem Abstand dazu in einem Regler-Leuchten-Gehäuse angeordneten Temperaturregler, in raumbildlicher Darstellung, bei geöffneter Tür,
Fig. 2
in einem Ausschnitt den inneren oberen Eckbereich des Gehäuses des Haushaltskühlschranks mit seinem Verdampfer und dem in dem Regler-Leuchten-Gehäuse angeordneten Temperagturregler sowie dem dessen Abstand zum Verdampfer überbrückenden Fühlerrohr, ebenfalls in raumbildlicher Darstellung und
Fig. 3
in größerem Maßstab den in dem Regler-Leuchten-Gehäuse sitzenden Temperaturregler mit dem von einem Schutzrohr umgebenden Fühlerrohr als Einbaueinheit.
The invention is explained in the following description with reference to an embodiment shown in simplified form in the accompanying drawing in connection with a household refrigerator. Show it:
Fig. 1
a household refrigerator with an evaporator and a temperature controller arranged at a spatial distance from it in a controller-lamp housing, in a spatial representation, with the door open,
Fig. 2
in a cutout the inner upper corner area of the housing of the household refrigerator with its evaporator and the temperature control regulator arranged in the regulator-light housing as well as the sensor tube bridging its distance from the evaporator, also in a spatial representation and
Fig. 3
on a larger scale the temperature controller located in the controller-lamp housing with the sensor tube surrounded by a protective tube as an installation unit.

Ein in der Fig. 1 mit 10 bezeichneter Haushalts-Kühlschrank weist ein mit einer Tür 11 verschließbares Gehäuse 12 auf, in dessen rechten oberen Eckbereich hinter einer Verdampfertür 13 ein Verdampfer 14 in Form eines Kastenverdampfers 13 angeordnet ist. Das in der üblichen Weise mit Tragrosten 15 zum Ablegen des Kühlgutes und einer Gemüseschale 16 ausgestattete Gehäuse 12 weist einen mit einem Einstellknopf 17 einstellbaren Temperaturregler 18 auf, der in einem unterhalb des Verdampfers 14 an der Seitenwand des Gehäuses 12 sitzenden Regler-Leuchten-Gehäuse 19 angeordnet ist. Der räumliche Abstand zwischen dem Temperaturregler 18 und dem Verdampfer 14 ist mit einem Fühlerrohr 20 überbrückt, welches an der Innenwand des Gehäuses 12 anliegt und über seine freie Länge von einem Schutzrohr 21 umhüllt ist. Dabei ist der unmittelbar hinter dem Regler-Leuchten-Gehäuse 19 austretende Abschnitt des Fühlerrohres in einer in der Seitenwand des Gehäuses 12 angeordneten Nut 22 eingelegt, in welcher es von in Abständen zueinander angeordneten Klemmstellen 23 sicher gehalten wird. Der mittlere Abschnitt des Fühlerrohres 20 ist in der Kehle zwischen der Seiten- und Rückwand des Gehäuses 12 nach oben geführt und dort in einer zwischen vorspringenden Führungsleisten 24 für die Tragroste 15 und der Rückwand des Gehäuses 12 gebildeten Nut 25 eingeklemmt. Der Endabschnitt des von dem Schutzrohr 21 umhüllten Fühlerrohres 20 ist dann in einem Bogen von der Rückwand des Gehäuses 12 an die Unterseite des Verdampfers 14 geführt, der zu diesem Zwecke an der Unterseite mit einem Blindkanal 27 zum Einstecken seines Endes versehen ist. Auf diese Weise wird ein guter Wärmeübergang vom Verdampfer 14 auf den Endabschnitt des Fühlerrohres 20 gewährleistet.A household refrigerator designated 10 in FIG. 1 has a housing 12 which can be closed with a door 11, in the upper right corner region of which an evaporator 14 in the form of a box evaporator 13 is arranged behind an evaporator door 13. The housing 12, which is equipped in the usual way with support grids 15 for storing the refrigerated goods and a vegetable bowl 16, has a temperature regulator 18 which can be adjusted with an adjusting knob 17 and which is located in a below the evaporator 14 on the Side wall of the housing 12 seated regulator-lamp housing 19 is arranged. The spatial distance between the temperature controller 18 and the evaporator 14 is bridged by a sensor tube 20 which bears against the inner wall of the housing 12 and is covered by a protective tube 21 over its free length. The section of the sensor tube emerging directly behind the regulator / lamp housing 19 is inserted in a groove 22 arranged in the side wall of the housing 12, in which it is held securely by clamping points 23 arranged at intervals from one another. The middle section of the sensor tube 20 is guided upwards in the throat between the side and rear walls of the housing 12 and is clamped there in a groove 25 formed between projecting guide strips 24 for the support gratings 15 and the rear wall of the housing 12. The end section of the sensor tube 20 enveloped by the protective tube 21 is then guided in an arc from the rear wall of the housing 12 to the underside of the evaporator 14, which for this purpose is provided on the underside with a blind channel 27 for inserting its end. In this way, good heat transfer from the evaporator 14 to the end section of the sensor tube 20 is ensured.

Das die freie Länge des Fühlerrohres 20 einhüllende Schutzrohr 21 ist, wie insb. aus der Fig. 3 hervorgeht, nahe seinen Enden mit je einem axiale Kräfte aufnehmenden Anschlag 28 versehen, der in Form einer den äußeren Durchmesser des Schutzrohres verändernden Verformung ausgebildet ist. Diese Anschläge sind in dem dargestellten Ausführungsbeispiel als durch Stauchung des Schutzrohres entstandene ringförmige Wülste ausgebildet, die an entsprechenden Stellen einerseits am Boden des Verdampfers 14 und andererseits im Regler-Leuchten-Gehäuse 19 formschlüssig eingespannt sind. Dies kann durch Einklemmen zwischen zwei Gehäuseteilen des Regler-Leuchten-Gehäuses oder auch durch eine entsprechende Deformation des Endes des Blindkanals 27 am Verdampfer 14 geschehen.The protective tube 21 enveloping the free length of the sensor tube 20, as can be seen in particular from FIG. 3, is provided near its ends with a stop 28 which absorbs axial forces and which is designed in the form of a deformation which changes the outer diameter of the protective tube. In the exemplary embodiment shown, these stops are designed as ring-shaped beads formed by compression of the protective tube, which on the one hand at corresponding points on the bottom of the evaporator 14 and on the other hand are positively clamped in the regulator-lamp housing 19. This can be done by clamping between two housing parts of the controller-lamp housing or by a corresponding deformation of the end of the blind channel 27 on the evaporator 14.

Wie insb. aus Fig. 3 hervorgeht ist das Schutzrohr 21 an dem dem Verdampfer zugeordneten freien Ende des Fühlerrohres 21 durch Abklemmen od.dgl. wasserdicht verschlossen, um das Eindringen von Feuchtigkeit - wie beispielweise Tauwasser - zu verhindern und somit eine einwandfreie elektrische Berührungssicherheit zu gewährleisten.As can be seen in particular from FIG. 3, the protective tube 21 is connected to the free end of the sensor tube 21 assigned to the evaporator by clamping or the like. sealed watertight to prevent the ingress of moisture - such as condensation - and thus to ensure perfect electrical contact safety.

Claims (3)

  1. Cooling device, in particular domestic refrigerator or the like, with an evaporator (14) and a temperature regulator (18) arranged at a spatial distance therefrom as well as a sensor tube (20), which bridges the spacing from the evaporator and the free length of which is enveloped by a protective tube (21), characterised thereby, that the protective tube (21) near each of its ends is provided with a respective abutment (28), which takes up axial forces and is in the shape of a deformation varying in its external diameter.
  2. Cooling device according to claim 1, characterised thereby, that the abutment (28) is formed as an annular bead, which has arisen through upsetting of the protective tube (21).
  3. Cooling device according to one of the preceding claims, characterised thereby, that the evaporator (14) and the temperature regulator (18) are provided with means for the shape-locking clamping-in of the abutments (28) of the protective tube (21).
EP19920101812 1991-03-20 1992-02-04 Refrigerating apparatus, especially a domestic refrigerator or the like Expired - Lifetime EP0504567B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9103447U 1991-03-20
DE9103447U DE9103447U1 (en) 1991-03-20 1991-03-20

Publications (2)

Publication Number Publication Date
EP0504567A1 EP0504567A1 (en) 1992-09-23
EP0504567B1 true EP0504567B1 (en) 1995-04-19

Family

ID=6865513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920101812 Expired - Lifetime EP0504567B1 (en) 1991-03-20 1992-02-04 Refrigerating apparatus, especially a domestic refrigerator or the like

Country Status (4)

Country Link
EP (1) EP0504567B1 (en)
DE (2) DE9103447U1 (en)
DK (1) DK0504567T3 (en)
ES (1) ES2072029T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19962728A1 (en) * 1999-12-23 2001-06-28 Grundfos As Cooler
DE102006061098B4 (en) * 2006-12-22 2020-08-06 BSH Hausgeräte GmbH Refrigerator
DE102008044253A1 (en) * 2008-12-02 2010-06-10 BSH Bosch und Siemens Hausgeräte GmbH Evaporator for a refrigeration device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2622900A (en) * 1946-07-03 1952-12-23 Boston Woven Hose & Rubber Co Drain hose
DE1401544A1 (en) * 1962-11-30 1968-12-12 Siemens Elektrogeraete Gmbh Arrangement for guiding and holding thermostat capillary tubes in household refrigerators
FR2419450A1 (en) * 1978-03-10 1979-10-05 Usinage Tubes Pour Electr Opt. plastic-coated metal fitting - for anchoring flexible hose ends within washing machines, etc.
DE8909103U1 (en) * 1989-07-27 1989-10-05 Kabelmetal Electro Gmbh, 3000 Hannover, De

Also Published As

Publication number Publication date
DE59201936D1 (en) 1995-05-24
DE9103447U1 (en) 1991-06-13
EP0504567A1 (en) 1992-09-23
DK0504567T3 (en) 1995-09-04
ES2072029T3 (en) 1995-07-01

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