EP2836776B1 - Refrigerating device with a fan unit - Google Patents
Refrigerating device with a fan unit Download PDFInfo
- Publication number
- EP2836776B1 EP2836776B1 EP13714306.1A EP13714306A EP2836776B1 EP 2836776 B1 EP2836776 B1 EP 2836776B1 EP 13714306 A EP13714306 A EP 13714306A EP 2836776 B1 EP2836776 B1 EP 2836776B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flange
- wall
- fan unit
- refrigerating device
- counterpart
- 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.)
- Not-in-force
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Classifications
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- 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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
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- 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
- F25D23/006—General constructional features for mounting refrigerating machinery components
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- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
- F25D2317/0681—Details thereof
Definitions
- the present invention relates to a refrigerator with a fan unit, which has an impeller and a flange for attaching the fan unit to a wall of the refrigerator.
- Fan units with flange are laboriously screwed to the assembly partner, such as a wall.
- the assembly partner such as a wall.
- mounting via a plurality of radially arranged screw connections involves a high risk that the central bearing of the fan unit will be damaged by a bending moment on the flange.
- the assembly is time consuming when using screws.
- screws can tilt or not be tightened sufficiently.
- the publication JP 2003 314500 A shows a fan wheel comprising a bottom, which has three crescent-shaped elements on a concentric circle. By the three crescent-shaped elements one screw is screwed into a partition plate of a refrigerator.
- the Utility Model JP H0281379 U shows a fan, which is arranged in a housing.
- the housing is screwed to a receptacle.
- the recording is screwed to a wall.
- the publication US 2004/099000 A1 shows a fan device comprising a receiving device.
- the fan device further includes a fan with a motor.
- the engine is housed on a motor mount.
- the motor mount is formed integrally with the receptacle.
- the publication JP 2007 107732 A shows a fan unit comprising a fan.
- the fan is included in a receptacle.
- the receptacle is attached by screws to a partition.
- the present invention is based on the recognition that a concentric attachment around the axis of rotation of the impeller prevents a bending moment which can lead to damage of the central fan bearing.
- the invention relates to a refrigeration device with a fan unit, which has an impeller and a flange for fastening the fan unit to a wall of the refrigeration device, wherein the flange has a concentric with the axis of rotation of the impeller fastening element for securing the fan unit to the wall.
- the impeller may generally be any impeller, such as a radial impeller or an axial impeller.
- Under refrigeration device is in particular a household refrigeration appliance understood, ie a refrigerator, which is used for household management in households or in the catering sector, and in particular serves to store food and / or drinks at certain temperatures, such as a refrigerator, a freezer, adegefrierkombination, a freezer or a wine fridge.
- a household refrigeration appliance understood, ie a refrigerator, which is used for household management in households or in the catering sector, and in particular serves to store food and / or drinks at certain temperatures, such as a refrigerator, a freezer, achengefrierkombination, a freezer or a wine fridge.
- the fastening element comprises an external thread or a bayonet closure.
- the refrigeration device comprises a counterpart for the fastening element for fastening the fan unit to the wall.
- the counterpart has an internal thread or a bayonet closure.
- the technical advantage is also achieved that an attachment of the fan unit can be realized in a simple manner.
- the counterpart is made of plastic.
- the technical advantage is achieved that the counterpart can be produced by simple means in a suitable form.
- the counterpart encloses the fastening element of the flange.
- the technical advantage is achieved that the fastener is protected from mechanical damage.
- an elastic element is arranged between the counterpart and the wall. As a result, for example, the technical advantage is achieved that an unintentional release of the fan unit is avoided and improves the strength of the mechanical connection.
- the counterpart comprises a latching means for latching the counterpart in an attachment of the fan unit.
- a latching means for latching the counterpart in an attachment of the fan unit.
- the latching means is a latching nose for latching in a recess in the wall.
- the locking means is a pawl element.
- the refrigeration device comprises a screw which prevents rotation of the counterpart or the flange relative to the wall.
- an elastic element is arranged between the wall and the flange.
- the flange and / or the wall has a shape which prevents a rotation of the flange relative to the wall.
- the flange is circular.
- the technical advantage is achieved that the flange exerts a uniform force on the wall.
- the flange comprises an axis of rotation for the impeller.
- Fig.1 shows a refrigerator with an upper refrigerator door 103 and a lower refrigerator door 105 representative of a general refrigeration device 100.
- the refrigerator is used for example for cooling food and includes a refrigerant circuit with an evaporator, a compressor, a condenser and a throttle body.
- the evaporator is a heat exchanger in which, after expansion, the liquid refrigerant is vaporized by absorbing heat from the medium to be cooled, ie the air inside the refrigerator.
- the compressor is a mechanically operated component that draws refrigerant vapor from the evaporator and expels it at a higher pressure to the condenser.
- the condenser is a heat exchanger in which, after compression, the vaporized refrigerant is released by heat release to an external cooling medium, i. the ambient air is liquefied.
- the throttle body is a device for the continuous reduction of the pressure by cross-sectional constriction.
- the refrigerant is a fluid used for heat transfer in the cryogenic system which absorbs heat at low temperatures and low pressure of the fluid and releases heat at higher temperature and pressure of the fluid, usually including changes in state of the fluid.
- the upper door 103 opens an upper refrigeration compartment, while the lower door 105, for example, opens a 0 ° C compartment. In the two subjects, different temperatures prevail. In order to operate the refrigerator efficiently, the cold air is circulated inside the refrigerator 100.
- a space-saving installation of the fan unit is carried out either via a subframe in axial fans, a special fan housing, such as a worm, or a flange in radial fans. While subframe and fan housing can be locked, fan units mounted on a flange are bolted to the mounting partner, such as a wall.
- Fig. 2 shows a perspective view of a fan unit 200 which is mounted via screws 211 and a flange 205 on a transparent wall 207 shown.
- a radial impeller 203 rotates about an axis having an opening 215.
- Fig. 3 shows a cross section of the mounted on a wall 207 fan unit 200.
- the flange 205 includes a plurality of threads 213, in which the screws 211 are screwed to attach the fan unit 200.
- By screwing the fan unit 200 is attached to the wall 207.
- the radial impeller 203 rotates about the axis of rotation 209.
- Fig. 4 shows a perspective view of a fan unit 300 with a fastener 311 on the flange 305, which is arranged concentrically to the axis of rotation of the radial impeller 303.
- the flange 305 may have a projection 319, by which the flange 305 is secured against rotation during insertion into a corresponding, positive fit in the wall 307.
- the wall 307 comprises a recess 313 into which a corresponding nose of the counterpart 315 can engage and which prevents the counterpart 315 from rotating with respect to the wall.
- the counterpart 315 is provided with an anti-twist device which can only be released again with the aid of a corresponding tool, since in this case an unintentional release of the counterpart 315 is prevented and a firm connection with the wall 307 results. In the rotation of the flange 305 against the wall 307 such a configuration is not essential.
- the flange 305 may include one or more pins that pop out of the surface of the flange 305 and that are inserted into corresponding openings in the wall upon placement of the flange 305 on the wall.
- Fig. 5 shows a cross section of the mounted on a wall 307 fan unit 300.
- the flange 305 is located between the radial impeller 303 and the wall 307.
- the radial impeller 303 rotates about the axis of rotation 309th
- An electric motor for driving the radial impeller 303 about the rotation axis 309 is integrated, for example, in the radial impeller 303 or mounted on the flange 305, and is externally supplied with a proper operating voltage.
- the fastening element 311 protrudes through the wall 307, on which the fan unit 300 is mounted and the at the same time serves as an air-conducting component.
- the fastening element 311 can be, for example, a molded body with a bayonet connection or screw connection. In general, however, other connection mechanisms may be used as long as they are concentric with the axis of rotation 309 of the radial impeller 303.
- the fastener 311 is secured with a counterpart 315, such as a nut.
- the counterpart 315 has as a latching means on a nose 317 which engages in a predetermined position in a corresponding opening in the wall 307, so that a turning back of the counterpart 315 is prevented after latching.
- the counterpart 315 is designed self-locking by a latching with the air duct.
- All components are designed so that between flange 305 and counterpart 315 a play-free connection, such as a press connection, is formed. Tolerance compensation of the components can be ensured by means of elastic elements, such as rubber slides or rings, on the flange 305 or counterpart 315.
- the elastic elements ensure a uniform contact pressure and additionally prevent the transmission of vibrations.
- Another possibility is to secure the components against rotation with an additional connecting element, such as a screw.
- the fan unit and the flange with the bearing system of the fan unit is loaded only in the axial and radial directions, so that a bending moment as in a screw connection can not occur.
- the applied radial force is transmitted during the joining process to the wall 307, on which the fan unit 300 is mounted, so that the flange is only under a tensile load.
- the compound according to the invention is self-locking and quick and easy to install.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Description
Die vorliegende Erfindung betrifft ein Kältegerät mit einer Lüftereinheit, die ein Gebläserad und einen Flansch zum Befestigen der Lüftereinheit an einer Wandung des Kältegerätes aufweist.The present invention relates to a refrigerator with a fan unit, which has an impeller and a flange for attaching the fan unit to a wall of the refrigerator.
Lüftereinheiten mit Flansch werden am Montagepartner aufwändig verschraubt, wie beispielsweise einer Wandung. Eine Montage über mehrere radial angeordnete Verschraubungen birgt jedoch ein hohes Risiko, dass das zentrale Lager der Lüftereinheit durch ein Biegemoment auf den Flansch beschädigt wird. Außerdem ist die Montage bei einer Verwendung von Schrauben zeitaufwändig. Daneben können Schrauben verkanten oder nicht ausreichend fest angezogen werden.Fan units with flange are laboriously screwed to the assembly partner, such as a wall. However, mounting via a plurality of radially arranged screw connections involves a high risk that the central bearing of the fan unit will be damaged by a bending moment on the flange. In addition, the assembly is time consuming when using screws. In addition, screws can tilt or not be tightened sufficiently.
Die Offenlegungsschrift
Die Gebrauchsmusterschrift
Die Offenlegungsschrift
Die Offenlegungsschrift
Es ist daher die der Erfindung zugrundeliegende Aufgabe, die Befestigung einer Lüftereinheit in einem Kältegerät zu verbessern.It is therefore the object underlying the invention to improve the attachment of a fan unit in a refrigerator.
Diese Aufgabe wird durch einen Gegenstand mit den Merkmalen nach dem unabhängigen Anspruch gelöst. Vorteilhafte Weiterbildungsformen sind Gegenstand der abhängigen Ansprüche, der Beschreibung und der Zeichnungen.This object is achieved by an article having the features according to the independent claim. Advantageous forms of further development are the subject of the dependent claims, the description and the drawings.
Die vorliegende Erfindung beruht auf der Erkenntnis, dass eine konzentrische Befestigung um die Drehachse des Gebläserades ein Biegemoment verhindert, das zu einer Beschädigung des zentralen Lüfterlagers führen kann.The present invention is based on the recognition that a concentric attachment around the axis of rotation of the impeller prevents a bending moment which can lead to damage of the central fan bearing.
Gemäß einem Aspekt betrifft die Erfindung ein Kältegerät mit einer Lüftereinheit, die ein Gebläserad und einen Flansch zum Befestigen der Lüftereinheit an einer Wandung des Kältegerätes aufweist, wobei der Flansch ein zur Drehachse des Gebläserades konzentrisches Befestigungselement zum Befestigen der Lüftereinheit an der Wandung aufweist. Dadurch wird beispielsweise der technische Vorteil erreicht, dass ein Biegemoment auf den Flansch vermieden wird und sich die Montage der Lüftereinheit vereinfacht. Das Gebläserad kann im Allgemeinen ein beliebiges Lüfterrad sein, wie beispielsweise ein Radialgebläserad oder ein Axialgebläserad.According to one aspect, the invention relates to a refrigeration device with a fan unit, which has an impeller and a flange for fastening the fan unit to a wall of the refrigeration device, wherein the flange has a concentric with the axis of rotation of the impeller fastening element for securing the fan unit to the wall. As a result, for example, the technical advantage is achieved that a bending moment is avoided on the flange and simplifies the installation of the fan unit. The impeller may generally be any impeller, such as a radial impeller or an axial impeller.
Unter Kältegerät wird insbesondere ein Haushaltskältegerät verstanden, also ein Kältegerät, das zur Haushaltsführung in Haushalten oder im Gastronomiebereich eingesetzt wird, und insbesondere dazu dient Lebensmittel und/oder Getränke bei bestimmten Temperaturen zu lagern, wie beispielsweise ein Kühlschrank, ein Gefrierschrank, eine Kühlgefrierkombination, eine Gefriertruhe oder ein Weinkühlschrank.Under refrigeration device is in particular a household refrigeration appliance understood, ie a refrigerator, which is used for household management in households or in the catering sector, and in particular serves to store food and / or drinks at certain temperatures, such as a refrigerator, a freezer, a Kühlgefrierkombination, a freezer or a wine fridge.
Gemäß einer vorteilhaften Ausführungsform umfasst das Befestigungselement ein Außengewinde oder einen Bajonettverschluss. Dadurch wird beispielsweise der technische Vorteil erreicht, dass eine schnelle Montageeinheit der Lüftereinheit in einem Produktionsprozess an einer Wandung des Kältegerätes erfolgt.According to an advantageous embodiment, the fastening element comprises an external thread or a bayonet closure. As a result, the technical advantage is achieved, for example, that a fast assembly unit of the fan unit takes place in a production process on a wall of the refrigerator.
Gemäß der Erfindung umfasst das Kältegerät ein Gegenstück für das Befestigungselement zum Befestigen der Lüftereinheit an der Wandung. Dadurch wird beispielsweise der technische Vorteil erreicht, dass eine leichte Montage durch Aufsetzen des Gegenstücks erfolgt.According to the invention, the refrigeration device comprises a counterpart for the fastening element for fastening the fan unit to the wall. As a result, for example, the technical advantage is achieved that an easy assembly is made by placing the counterpart.
Gemäß der Erfindung weist das Gegenstück ein Innengewinde oder einen Bajonettverschluss auf. Dadurch wird beispielsweise ebenfalls der technische Vorteil erreicht, dass sich eine Befestigung der Lüftereinheit auf einfache Weise realisieren lässt.According to the invention, the counterpart has an internal thread or a bayonet closure. As a result, for example, the technical advantage is also achieved that an attachment of the fan unit can be realized in a simple manner.
Gemäß einer weiteren vorteilhaften Ausführungsform ist das Gegenstück aus Kunststoff hergestellt. Dadurch wird beispielsweise der technische Vorteil erreicht, dass sich das Gegenstück mit einfachen Mitteln in einer geeigneten Form herstellen lässt.According to a further advantageous embodiment, the counterpart is made of plastic. As a result, for example, the technical advantage is achieved that the counterpart can be produced by simple means in a suitable form.
Gemäß der Erfindung umschließt das Gegenstück das Befestigungselement des Flansches. Dadurch wird beispielsweise der technische Vorteil erreicht, dass das Befestigungselement vor mechanischen Beschädigungen geschützt ist. Gemäß einer weiteren vorteilhaften Ausführungsform ist zwischen dem Gegenstück und der Wandung ein elastisches Element angeordnet. Dadurch wird beispielsweise der technische Vorteil erreicht, dass ein unbeabsichtigtes Lösen der Lüftereinheit vermieden wird und sich die Festigkeit der mechanischen Verbindung verbessert.According to the invention, the counterpart encloses the fastening element of the flange. As a result, for example, the technical advantage is achieved that the fastener is protected from mechanical damage. According to a further advantageous embodiment, an elastic element is arranged between the counterpart and the wall. As a result, for example, the technical advantage is achieved that an unintentional release of the fan unit is avoided and improves the strength of the mechanical connection.
Gemäß einer weiteren vorteilhaften Ausführungsform umfasst das Gegenstück ein Rastmittel zum Einrasten des Gegenstücks bei einer Befestigung der Lüftereinheit. Dadurch wird beispielsweise ebenfalls der technische Vorteil erreicht, dass ein unbeabsichtigtes Lösen der Lüftereinheit von der Wandung verhindert wird.According to a further advantageous embodiment, the counterpart comprises a latching means for latching the counterpart in an attachment of the fan unit. This will For example, also the technical advantage achieved that unintentional release of the fan unit is prevented by the wall.
Gemäß einer weiteren vorteilhaften Ausführungsform ist das Rastmittel eine Rastnase zum Einrasten in einer Aussparung in der Wandung. Dadurch wird beispielsweise der technische Vorteil erreicht, dass sich das Rastmittel auf einfache Weise und mit geringem Aufwand realisieren lässt.According to a further advantageous embodiment, the latching means is a latching nose for latching in a recess in the wall. As a result, for example, the technical advantage is achieved that the latching means can be realized in a simple manner and with little effort.
Gemäß einer weiteren vorteilhaften Ausführungsform ist das Rastmittel ein Sperrklinkenelement. Dadurch wird beispielsweise der technische Vorteil erreicht, dass sich das Gegenstück an unterschiedlichen Positionen einrasten lässt und eine feste Verbindung der Lüftereinheit an der Wandung erzielt wird.According to a further advantageous embodiment, the locking means is a pawl element. As a result, for example, the technical advantage is achieved that the counterpart can engage in different positions and a firm connection of the fan unit is achieved on the wall.
Gemäß einer weiteren vorteilhaften Ausführungsform umfasst das Kältegerät eine Schraube, die eine Drehung des Gegenstücks oder des Flansches gegenüber der Wandung verhindert. Dadurch wird beispielsweise der technische Vorteil erreicht, dass die Befestigung der Lüftereinheit an der Wandung verbessert wird.According to a further advantageous embodiment, the refrigeration device comprises a screw which prevents rotation of the counterpart or the flange relative to the wall. As a result, for example, the technical advantage is achieved that the attachment of the fan unit to the wall is improved.
Gemäß einer weiteren vorteilhaften Ausführungsform ist zwischen Wandung und Flansch ein elastisches Element angeordnet. Dadurch wird beispielsweise ebenfalls der technische Vorteil erreicht, dass sich die Festigkeit der mechanischen Verbindung verbessert.According to a further advantageous embodiment, an elastic element is arranged between the wall and the flange. As a result, for example, the technical advantage is achieved that improves the strength of the mechanical connection.
Gemäß einer weiteren vorteilhaften Ausführungsform weist der Flansch und/oder die Wandung eine Form auf, die eine Verdrehung des Flansches gegenüber der Wandung verhindert. Dadurch wird beispielsweise ebenfalls der technische Vorteil erreicht, dass mit einfachen Mitteln die Befestigung der Lüftereinheit verbessert wird.According to a further advantageous embodiment, the flange and / or the wall has a shape which prevents a rotation of the flange relative to the wall. As a result, for example, the technical advantage is also achieved that the attachment of the fan unit is improved by simple means.
Gemäß einer weiteren vorteilhaften Ausführungsform ist der Flansch kreisförmig. Dadurch wird beispielsweise der technische Vorteil erreicht, dass der Flansch auf die Wandung eine gleichmäßige Kraft ausübt.According to a further advantageous embodiment, the flange is circular. As a result, for example, the technical advantage is achieved that the flange exerts a uniform force on the wall.
Gemäß einer weiteren vorteilhaften Ausführungsform umfasst der Flansch eine Drehachse für das Gebläserad. Dadurch wird beispielsweise der technische Vorteil erreicht, dass der sich das Gebläserad direkt an dem Flansch lagern lässt und der Aufbau der Lüftereinheit vereinfacht wird.According to a further advantageous embodiment, the flange comprises an axis of rotation for the impeller. As a result, the technical advantage is achieved, for example, that the blower wheel can be stored directly on the flange and the construction of the fan unit is simplified.
Weitere Ausführungsbeispiele werden Bezug nehmend auf die beiliegenden Zeichnungen erläutert. Es zeigen:
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Fig. 1 eine schematische Darstellung eines Kältegerätes; -
Fig. 2 eine perspektivische Darstellung einer Lüftereinheit mit Schraubbefestigung; -
Fig. 3 eine Querschnittsansicht einer Lüftereinheit mit Schraubbefestigung; -
Fig. 4 eine perspektivische Darstellung einer Lüftereinheit mit einem konzentrischen Befestigungselement; und -
Fig. 5 eine perspektivische Darstellung einer Lüftereinheit mit einem konzentrischen Befestigungselement.
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Fig. 1 a schematic representation of a refrigerator; -
Fig. 2 a perspective view of a fan unit with screw fastening; -
Fig. 3 a cross-sectional view of a fan unit with screw fastening; -
Fig. 4 a perspective view of a fan unit with a concentric fastener; and -
Fig. 5 a perspective view of a fan unit with a concentric fastener.
Der Verdichter ist ein mechanisch betriebenes Bauteil, das Kältemitteldampf vom Verdampfer absaugt und bei einem höheren Druck zum Verflüssiger ausstößt. Der Verflüssiger ist ein Wärmeaustauscher, in dem nach der Kompression das verdampfte Kältemittel durch Wärmeabgabe an ein äußeres Kühlmedium, d.h. die Umgebungsluft, verflüssigt wird. Das Drosselorgan ist eine Vorrichtung zur ständigen Verminderung des Druckes durch Querschnittsverengung.The compressor is a mechanically operated component that draws refrigerant vapor from the evaporator and expels it at a higher pressure to the condenser. The condenser is a heat exchanger in which, after compression, the vaporized refrigerant is released by heat release to an external cooling medium, i. the ambient air is liquefied. The throttle body is a device for the continuous reduction of the pressure by cross-sectional constriction.
Das Kältemittel ist ein Fluid, das für die Wärmeübertragung in dem kälteerzeugenden System verwendet wird, das bei niedrigen Temperaturen und niedrigem Druck des Fluids Wärme aufnimmt und bei höherer Temperatur und höherem Druck des Fluids Wärme abgibt, wobei üblicherweise Zustandsänderungen des Fluids inbegriffen sind.The refrigerant is a fluid used for heat transfer in the cryogenic system which absorbs heat at low temperatures and low pressure of the fluid and releases heat at higher temperature and pressure of the fluid, usually including changes in state of the fluid.
Die obere Tür 103 öffnet ein oberes Kühlfach, während die untere Tür 105 beispielsweise ein 0 °C - Fach öffnet. In den beiden Fächern herrschen unterschiedliche Temperaturen vor. Um das Kältegerät effizient zu betreiben, wird die kalte Luft im Inneren des Kältegerätes 100 umgewälzt.The
Um dabei die kalte Luft gezielt an das in den Fächern lagernde Kühlgut zu befördern, sind im Inneren des Kältegerätes spezielle Luftführungen vorgesehen. Dabei ist es vorteilhaft, die für die Umwälzung notwendige Lüftereinheit in die Luftführung zu integrieren, da hierdurch Einbauraum eingespart und so ein geringer Verlust von Nutzvolumen im Kältegerät erreicht wird. Dies wird durch eine einbauraumsparende Montage der Lüftereinheit in dem Kältegerät 100 unter Ausschluss einer Krafteinleitung in das Lagersystem der Lüftereinheit erreicht.In order to promote the cold air targeted to the stored in the compartments refrigerated goods, special air ducts are provided inside the refrigerator. It is advantageous to integrate the necessary for the circulation fan unit in the air duct, as this saves installation space and so a small loss of useful volume in the refrigerator is achieved. This is achieved by mounting space-saving installation of the fan unit in the
Eine einbauraumsparende Montage der Lüftereinheit erfolgt entweder über einen Hilfsrahmen bei Axialgebläsen, über ein spezielles Lüftergehäuse, wie beispielsweise einer Schnecke, oder über einen Flansch bei Radialgebläsen. Während Hilfsrahmen und Lüftergehäuse verrastet werden können, werden an einem Flansch montierte Lüftereinheiten am Montagepartner, wie beispielsweise einer Wandung, verschraubt.A space-saving installation of the fan unit is carried out either via a subframe in axial fans, a special fan housing, such as a worm, or a flange in radial fans. While subframe and fan housing can be locked, fan units mounted on a flange are bolted to the mounting partner, such as a wall.
Durch die Montage über mehrere radial angeordnete Verschraubungen kann ein Biegemoment in Pfeilrichtung entstehen, das das zentrale Lager der Lüftereinheit 200 beschädigt. Daneben ist die Montage mittels Schrauben zeitaufwändig und die Schrauben können verkanten oder nicht ausreichend fest angezogen werden.By mounting over a plurality of radially arranged screw connections, a bending moment in the direction of the arrow can occur which damages the central bearing of the
Daher ist es die der Erfindung zugrundeliegende Aufgabe, die Befestigung der Lüftereinheit 200 an der Wandung 207 zu verbessern. Dies geschieht, indem ein zur Drehachse 209 des Radialgebläserades 203 konzentrisches Befestigungselement zum Befestigen der Lüftereinheit 200 an der Wandung 207 bereitgestellt wird.Therefore, it is the object underlying the invention to improve the attachment of the
Vorteilhaft ist es, wenn das Gegenstück 315 mit einer Verdrehsicherung bereitgestellt ist, die lediglich mit Hilfe eines entsprechenden Werkzeugs wieder lösbar ist, da in diesem Fall ein unbeabsichtigtes Lösen der des Gegenstücks 315 verhindert wird und eine feste Verbindung mit der Wandung 307 entsteht. Bei der Verdrehsicherung des Flanschs 305 gegenüber der Wandung 307 ist eine derartige Ausgestaltung nicht unbedingt erforderlich.It is advantageous if the
Im Allgemeinen können jedoch auch andere Ausgestaltungen an dem Flansch 305 oder der Wandung 307 bereitgestellt sein, die geeignet sind eine Verdrehung des Flanschs 305 gegenüber der Wandung zu verhindern. Beispielsweise kann der Flansch 305 einen oder mehrere Stifte aufweisen, die aus der Fläche des Flanschs 305 herausspringen und die beim Aufsetzen des Flansch 305 auf die Wandung in entsprechende Öffnungen in der Wandung eingesetzt werden.In general, however, other configurations may be provided on the
Ein Elektromotor zum Antreiben des Radialgebläserades 303 um die Drehachse 309 ist beispielsweise im Radialgebläserad 303 integriert oder auf dem Flansch 305 montiert und wird von außen mit einer geeigneten Betriebsspannung versorgt. Das Befestigungselement 311 ragt durch die Wandung 307 hindurch, an der die Lüftereinheit 300 montiert wird und die zugleich als luftführendes Bauteil dient. Bei dem Befestigungselement 311 kann es sich beispielsweise um einen Formkörper mit einer Bajonettverbindung oder Schraubverbindung handeln. Im Allgemeinen können jedoch auch andere Verbindungsmechanismen verwendet werden, solange diese konzentrisch zur Drehachse 309 des Radialgebläserades 303 angeordnet sind.An electric motor for driving the
Zum Befestigen der Lüftereinheit 300 wird das Befestigungselement 311 mit einem Gegenstück 315, wie beispielsweise einer Mutter, gesichert. Das Gegenstück 315 weist als Rastmittel eine Nase 317 auf, die an einer vorgesehenen Position in einer entsprechenden Öffnung in der Wandung 307 einrastet, so dass ein Zurückdrehen des Gegenstücks 315 nachdem Einrasten verhindert wird. Das Gegenstück 315 ist dabei durch eine Verrastung mit der Luftführung selbstsichernd ausgeführt.To secure the
Alle Bauteile sind so gestaltet, dass zwischen Flansch 305 und Gegenstück 315 eine spielfreie Verbindung, wie beispielsweise eine Pressverbindung, entsteht. Ein Toleranzausgleich der Bauteile kann mittels elastischer Elemente, wie beispielsweise Gummischieben oder -ringen, am Flansch 305 oder Gegenstück 315 sichergestellt werden. Die elastischen Elemente sorgen für einen gleichmäßigen Anpressdruck und verhindern zusätzlich die Übertragung von Schwingungen.All components are designed so that between
Eine weitere Möglichkeit ist es, die Bauteile mit einem zusätzlichen Verbindungselement, wie beispielsweise einer Schraube, gegen Verdrehen zu sichern.Another possibility is to secure the components against rotation with an additional connecting element, such as a screw.
Durch die konzentrische Anordnung des Befestigungselementes 311 wird die Lüftereinheit und der Flansch mit dem Lagersystem der Lüftereinheit nur in axialer und radialer Richtung belastet, so dass ein Biegemoment wie bei einer Schraubverbindung nicht auftreten kann.Due to the concentric arrangement of the
Die ausgeübte radiale Kraft wird beim Fügevorgang auf die Wandung 307 übertragen, an der die Lüftereinheit 300 montiert wird, so dass der Flansch lediglich unter einer Zugbelastung steht. Daneben ist die erfindungsgemäße Verbindung selbstsichernd und schnell und einfach montierbar.The applied radial force is transmitted during the joining process to the
- 100100
- KältegerätThe refrigerator
- 103103
- Obere TürUpper door
- 105105
- Untere TürLower door
- 200200
- Lüftereinheitfan unit
- 203203
- Radialgebläseradradial impeller
- 205205
- Flanschflange
- 207207
- Wandungwall
- 209209
- Drehachseaxis of rotation
- 211211
- Schraubescrew
- 213213
- Gewindethread
- 215215
- Öffnungopening
- 300300
- Lüftereinheitfan unit
- 303303
- Radialgebläseradradial impeller
- 305305
- Flanschflange
- 307307
- Wandungwall
- 309309
- Drehachseaxis of rotation
- 311311
- Befestigungselementfastener
- 313313
- Aussparungrecess
- 315315
- Gegenstückcounterpart
- 317317
- Rastnaselocking lug
- 319319
- Vorsprunghead Start
Claims (13)
- Refrigerating device (100) with a fan unit (300), which has a blower wheel (303) and a flange (305) for fastening the fan unit (300) to a wall (307) of the refrigerating device (100), wherein the flange (305) has a fastening element (311), which is concentric to the axis of rotation (309) of the blower wheel (303), for fastening the fan unit (300) to the wall (307), characterised in that the refrigerating device (100) comprises a counterpart (315) for the fastening element (311) for fastening the fan unit (300) to the wall (307), the counterpart (315) has an internal thread or a bayonet fitting, the counterpart encloses the fastening element of the flange so that a bending moment on the flange (305) can be prevented.
- Refrigerating device (100) according to claim 1, characterised in that the fastening element (311) comprises an outer thread or a bayonet fitting.
- Refrigerating device (100) according to one of claims 1 or 2, characterised in that the counterpart (315) is made from plastic.
- Refrigerating device (100) according to one of claims 1 to 3, characterised in that the counterpart (315) encloses the fastening element (311) of the flange (305).
- Refrigerating device (100) according to one of claims 1 to 4, characterised in that an elastic element is arranged between the counterpart (315) and the wall (307).
- Refrigerating device (100) according to one of claims 1 to 5, characterised in that the counterpart (315) comprises a catch means (317) for catching the counterpart (315) when the fan unit (300) is fastened.
- Refrigerating device (100) according to claim 6, characterised in that the latching means is a catch tappet (317) for catching in a recess in the wall (307).
- Refrigerating device (100) according to claim 6, characterised in that the latching means is a ratchet element.
- Refrigerating device (100) according to one of the preceding claims, characterised in that the refrigerating device (100) comprises a screw, which prevents a rotation of the counterpart (315) or of the flange (305) in relation to the wall (307).
- Refrigerating device (100) according to one of the preceding claims, characterised in that an elastic element is arranged between the wall (307) and flange (305).
- Refrigerating device (100) according to one of the preceding claims, characterised in that the flange (305) and/or the wall (307) have a shape which prevents the flange (305) from twisting in relation to the wall (307).
- Refrigerating device (100) according to one of the preceding claims, characterised in that the flange (305) is circular.
- Refrigerating device (100) according to one of the preceding claims, characterised in that the flange (305) comprises an axis of rotation (309) for the fan wheel (303).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012205831A DE102012205831A1 (en) | 2012-04-11 | 2012-04-11 | REFRIGERATOR WITH A FAN UNIT |
PCT/EP2013/057204 WO2013153001A1 (en) | 2012-04-11 | 2013-04-05 | Refrigerating device with a fan unit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2836776A1 EP2836776A1 (en) | 2015-02-18 |
EP2836776B1 true EP2836776B1 (en) | 2017-09-20 |
Family
ID=48048058
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13714306.1A Not-in-force EP2836776B1 (en) | 2012-04-11 | 2013-04-05 | Refrigerating device with a fan unit |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2836776B1 (en) |
CN (1) | CN104220827B (en) |
DE (1) | DE102012205831A1 (en) |
WO (1) | WO2013153001A1 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0281379U (en) * | 1988-12-14 | 1990-06-22 | ||
CN2135676Y (en) * | 1992-07-08 | 1993-06-09 | 单蔚 | Cooling device of electric fan |
JP3621783B2 (en) * | 1996-06-27 | 2005-02-16 | 三菱重工業株式会社 | Cooling unit for refrigeration equipment |
JPH1019443A (en) * | 1996-06-28 | 1998-01-23 | Mitsubishi Heavy Ind Ltd | Cooling unit of refrigerating device |
JP2003314500A (en) * | 2002-04-19 | 2003-11-06 | Toshiba Corp | Blower and refrigerator |
JP3793173B2 (en) * | 2002-11-25 | 2006-07-05 | エルジー電子株式会社 | Blower for cold air circulation in refrigerator |
JP2007107732A (en) * | 2005-10-11 | 2007-04-26 | Fukushima Industries Corp | Refrigerating showcase |
US20120045323A1 (en) * | 2010-08-17 | 2012-02-23 | Nidec Servo Corporation | Fan |
-
2012
- 2012-04-11 DE DE102012205831A patent/DE102012205831A1/en not_active Withdrawn
-
2013
- 2013-04-05 EP EP13714306.1A patent/EP2836776B1/en not_active Not-in-force
- 2013-04-05 WO PCT/EP2013/057204 patent/WO2013153001A1/en active Application Filing
- 2013-04-05 CN CN201380019313.5A patent/CN104220827B/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
DE102012205831A1 (en) | 2013-10-17 |
WO2013153001A1 (en) | 2013-10-17 |
CN104220827B (en) | 2016-08-31 |
CN104220827A (en) | 2014-12-17 |
EP2836776A1 (en) | 2015-02-18 |
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