EP2392875A2 - Cooling device with internal evaporator - Google Patents
Cooling device with internal evaporator Download PDFInfo
- Publication number
- EP2392875A2 EP2392875A2 EP20110167024 EP11167024A EP2392875A2 EP 2392875 A2 EP2392875 A2 EP 2392875A2 EP 20110167024 EP20110167024 EP 20110167024 EP 11167024 A EP11167024 A EP 11167024A EP 2392875 A2 EP2392875 A2 EP 2392875A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- evaporator
- refrigerating appliance
- appliance according
- gap
- storage chamber
- 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.)
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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
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/122—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and being formed of wires
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
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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
- F25D2317/063—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 with air guides
Definitions
- the present invention relates to a refrigeration device, in particular a household refrigerating appliance, with a storage chamber and a freely arranged in the storage chamber evaporator.
- a refrigeration device is off, for example EP 0 651 206 A known.
- the exposed arrangement allows a highly efficient heat transfer between the storage chamber and the refrigerated goods contained therein on the one hand and the evaporator on the other hand, as compared to a refrigeration unit in Coldwall construction eliminates the heat transfer obstructing inner container wall between storage chamber and evaporator.
- the efficiency of the evaporator is further impaired in a coldwall refrigerator in that an insulating material layer covers a main surface of the evaporator, so that heat exchange with the storage chamber is possible only on half of the evaporator surface.
- This disadvantage is avoidable with an exposed evaporator by providing a gap between it and an adjacent wall of the storage chamber. So the evaporator can also cool the air in the gap.
- the problem arises that air cooled in the gap can escape from the gap only at one edge of the evaporator.
- an area of the storage chamber adjacent to this edge is usually very strongly cooled, and a fan is required to distribute this very cold air and to achieve a sufficiently uniform temperature distribution in the storage chamber for practical applications.
- a disadvantage of this solution is that the evaporator can not be manufactured using the customary known production methods, in particular roll-bonding and tube-on-sheet, but rather an additional processing step for producing the openings and guide plates is required.
- the two forming the evaporator boards must be connected at the locations where the openings and baffles are formed gap tightly sealed together so that no leaks result when notching the baffles.
- Object of the present invention is to provide a refrigerator with an efficient internal evaporator, which can be realized inexpensively with conventional techniques.
- the evaporator is formed as a wire tube evaporator in a refrigerator, in particular a household refrigerator, with a storage chamber and an evaporator exposed along a vertical wall of the storage chamber arranged.
- a refrigerator in particular a household refrigerator
- Such an evaporator which is arranged at a distance from the vertical wall within the storage chamber, is permeable to air practically over its entire surface, so that even air which has cooled in a region of the evaporator facing the vertical wall reaches the storage chamber through the evaporator can be distributed in it.
- the wire tube evaporator is arranged along the rear wall of the storage space to form an air gap spaced from the rear wall.
- the wire tube evaporator has a meandering tube for guiding a refrigerant.
- the wire tube evaporator has vertical wires connecting horizontal pipe sections.
- bubbles of gaseous refrigerant in the liquid refrigerant can be prevented from rising inside the pipe sections, and the bubbling operation noises associated with such rising can be prevented.
- the horizontal tube sections prevent cooled air inside the evaporator from flowing freely from top to bottom and at the bottom of the evaporator at an extremely low temperature. Instead, force the horizontal pipe sections deflect the air cooled in the evaporator transverse to the vertical wall, thereby deflecting at least part of this cooled air toward the storage chamber and distributing itself therein.
- pipe sections of the wire tube evaporator are oriented vertically and connected to each other by horizontal wires.
- the wires may be disposed in one layer, on one side of the pipe sections, or in two layers on opposite sides of the pipe sections.
- the wires may be band-shaped, with an elongate cross section.
- the band-shaped wires are attached on the narrow side of the pipe sections, so as not to hinder the passage of air through the evaporator.
- adjacent wires of the wire tube evaporator are each spaced at least finger width from each other.
- a gap between the vertical wall and the evaporator can promote the convection and thus the distribution of cooled air at the evaporator in the storage chamber.
- band-shaped wires protrude into the gap, they can considerably intensify the heat exchange without their accommodation appreciably affecting the usable volume of the storage chamber.
- a flow obstruction disposed in the gap that locally narrows or obstructs the gap is useful to promote the passage of cold air out of the gap through the evaporator and its distribution in the storage chamber away from the edges of the evaporator.
- Such a flow obstacle may in particular have an air guide surface projecting obliquely downwards from the wall and towards the evaporator.
- the storage chamber is subdivided into compartments in a manner known per se by means of at least one horizontal compartment floor, such a flow obstacle is expediently arranged at the level of the compartment floor or above the compartment floor in order to divert cold air circulating in the gap into a compartment above the compartment floor.
- the flow obstacle is adjustable in height.
- Such a flow obstruction may be supported on a wire or tube of the wire tube evaporator.
- the in Fig. 1 shown in a perspective view household refrigerator has a body 1 and a door 2, which limit a storage chamber 3 for housing refrigerated goods.
- the storage chamber 3 is subdivided by several shelves 4, for example in the form of enclosed in a frame glass plates in superposed compartments.
- the shelves 4 do not extend directly to a rear wall of the body 1, but just before a front of this rear wall vertically arranged wire tube evaporator 5.
- the wire tube evaporator 5 comprises a meandering over the rear wall extending refrigerant tube 6 with horizontally oriented rectilinear portions 7, the are connected in series by 180 ° arches 8, as well as in two parallel to the rear wall planes on both sides of the refrigerant pipe 6 arranged, the rectilinear portions 7 fixedly interconnecting wires 9th
- Fig. 2 shows a piece of the here designated 10 rear wall of the body 1 and mounted parallel to this rear wall 10 and spaced therefrom by a gap 11 wire tube evaporator 5. Air in a space between two rectilinear portions 7 of the refrigerant tube 6 and connecting them Wires 9 cools, as indicated in the figure by arrows deflected from the lower rectilinear portion 7 during descent and distributed on the one hand on an adjacent shelf 4 and on the other hand in the gap 11th
- a projection 12 in the form of a horizontally extending rib is formed on the rear wall 10 of the body 1.
- the upper portion of the protrusion 12 forms an air guide 13 projecting obliquely downward and forward from the plane of the rear wall 10, onto a rectilinear portion 7 of the refrigerant pipe 6, and the trailing edge of an adjacent shelf 4.
- This air guide surface 13 forces over it in the gap 11 sinking cold air to forward, between the wires 9 of the evaporator 5 through, to evade and on the Distribute shelf 4.
- the projection 12 does not reach right up to the evaporator 5, so that a part of the sinking cold air can also pass between the projection 12 and the evaporator 5 in the gap 11 down to promote the convection movement below the shelf 4.
- Fig. 4 shows a third embodiment in which a projection deflecting the air forward is formed by a formed from sheet metal or plastic elastic plate 14 which in Fig. 5 is shown in a perspective view.
- the plate 14 has a wavy in cross-section course with two on the rear wall 10 flat-fitting supporting end pieces 15 and a projecting centerpiece 16, in each of which a wire 9 receiving slots 17 are formed.
- the center piece 16 rests on a straight section 7 of the refrigerant pipe.
- the plate 14 blocks the gap 11 and forces air sinking therein to pass through the evaporator 5 forward into the storage chamber 3.
- the plate 14 is adjustable in height by a user with the fingers between the wires 9 of the evaporator 5 passes through, the center 16 elastically presses against the rear wall 10 so that it is released from the supporting pipe section 7, and then it in the gap 11 - or moves down.
- the plate 14 can always be mounted in a height corresponding to the height of the shelf 4 height to produce a on the shelf 4 forward stroking cold air flow.
- the wave-shaped plate 14 is replaced by a comb-shaped plate 18, of which an upper edge portion 19 is supported on the rear wall 10, while a forming in the lower region of the plate 18 finger 20 between the wires 9 of the evaporator forward through and out are supported on a straight pipe section 7 of the evaporator 5.
- a comb-shaped plate 18 of which an upper edge portion 19 is supported on the rear wall 10, while a forming in the lower region of the plate 18 finger 20 between the wires 9 of the evaporator forward through and out are supported on a straight pipe section 7 of the evaporator 5.
- lateral edges 21 of the plate 18 project beyond the vertical edges of the evaporator 5 on the right and left, so that a user can grasp the edges 21 with his hand and move the plate 18.
- windows 22 may be cut out in a middle region of the plate, which allow air to pass through.
- a flow obstruction in the manner of plate 14 or 18 may be supported on one of the wires in a manner similar to that described above for pipe section 7.
- Fig. 8 shows a section of the rear wall 10 of the body 1 and mounted in front of this rear wall 10 evaporator 5 according to another embodiment of the invention.
- the rear wall 10 facing wires of the evaporator 5, denoted by 9 ' have a band-shaped cross-section and are each attached via a narrow side of the rectilinear pipe sections 7 of the evaporator 5.
- the ribbon-shaped wires 9 ' significantly increase the surface of the evaporator 5, on which a heat exchange with the air of the storage chamber 3 can take place, but impede the passage of air through the evaporator 5 no more than conventional cylindrical wires. Since the wires 9 'do not contact the back wall 10, they are compatible with the attachment of a flow obstruction such as the plate 14 or 18 in the gap 11.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Geometry (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein Kältegerät, insbesondere ein Haushaltskältegerät, mit einer Lagerkammer und einem in der Lagerkammer frei liegend angeordneten Verdampfer. Ein solches Kältegerät ist zum Beispiel aus
Die frei liegende Anordnung ermöglicht einen hocheffizienten Wärmeübergang zwischen der Lagerkammer und dem darin enthaltenen Kühlgut einerseits und dem Verdampfer andererseits, da im Vergleich zu einem Kältegerät in Coldwall-Bauweise die den Wärmeübergang behindernde Innenbehälterwand zwischen Lagerkammer und Verdampfer entfällt.The exposed arrangement allows a highly efficient heat transfer between the storage chamber and the refrigerated goods contained therein on the one hand and the evaporator on the other hand, as compared to a refrigeration unit in Coldwall construction eliminates the heat transfer obstructing inner container wall between storage chamber and evaporator.
Die Effizienz des Verdampfers ist bei einem Coldwall-Kältegerät ferner dadurch beeinträchtigt, dass eine Isoliermaterialschicht eine Hauptoberfläche des Verdampfers bedeckt, so dass ein Wärmeaustausch mit der Lagerkammer nur auf der Hälfte der Verdampferoberfläche möglich ist. Dieser Nachteil ist bei einem freiliegenden Verdampfer vermeidbar, indem ein Spalt zwischen ihm und einer benachbarten Wand der Lagerkammer vorgesehen wird. So kann der Verdampfer auch die Luft in dem Spalt kühlen. Bei einem als geschlossene Platte ausgebildeten Verdampfer ergibt sich jedoch das Problem, dass in dem Spalt abgekühlte Luft nur an einem Rand des Verdampfers aus dem Spalt austreten kann. Infolge dessen ist ein diesem Rand benachbarter Bereich der Lagerkammer meist sehr stark gekühlt, und ein Ventilator ist erforderlich, um diese sehr kalte Luft zu verteilen und eine für praktische Anwendungen ausreichend gleichmäßige Temperaturverteilung in der Lagerkammer zu erreichen.The efficiency of the evaporator is further impaired in a coldwall refrigerator in that an insulating material layer covers a main surface of the evaporator, so that heat exchange with the storage chamber is possible only on half of the evaporator surface. This disadvantage is avoidable with an exposed evaporator by providing a gap between it and an adjacent wall of the storage chamber. So the evaporator can also cool the air in the gap. In the case of an evaporator designed as a closed plate, however, the problem arises that air cooled in the gap can escape from the gap only at one edge of the evaporator. As a result, an area of the storage chamber adjacent to this edge is usually very strongly cooled, and a fan is required to distribute this very cold air and to achieve a sufficiently uniform temperature distribution in the storage chamber for practical applications.
Bei dem aus
Ein Nachteil dieser Lösung ist, dass der Verdampfer nicht mit den üblichen bekannten Fertigungsverfahren wie insbesondere Rollbonding und Tube-on-Sheet fertigbar ist, sondern zum Erzeugen der Öffnungen und Leitbleche ein zusätzlicher Bearbeitungsschritt erforderlich ist. Insbesondere bei der Fertigung durch Rollbonding ergibt sich das Problem, dass die zwei den Verdampfer bildenden Platinen an den Stellen, an denen die Öffnungen und Leitbleche gebildet werden, lückenlos dicht miteinander verbunden sein müssen, damit beim Ausklinken der Leitbleche keine Lecks resultieren.A disadvantage of this solution is that the evaporator can not be manufactured using the customary known production methods, in particular roll-bonding and tube-on-sheet, but rather an additional processing step for producing the openings and guide plates is required. In particular, in the production by roll-bonding, there is the problem that the two forming the evaporator boards must be connected at the locations where the openings and baffles are formed gap tightly sealed together so that no leaks result when notching the baffles.
Aufgabe der vorliegenden Erfindung ist, ein Kältegerät mit einem effizienten innen liegendem Verdampfer zu schaffen, das mit herkömmlichen Techniken kostengünstig realisierbar ist.Object of the present invention is to provide a refrigerator with an efficient internal evaporator, which can be realized inexpensively with conventional techniques.
Die Aufgabe wird gelöst, indem bei einem Kältegerät, insbesondere einem Haushaltskältegerät, mit einer Lagerkammer und einem entlang einer vertikalen Wand der Lagerkammer freiliegend angeordneten Verdampfer der Verdampfer als Drahtrohrverdampfer ausgebildet ist. Ein solcher Verdampfer, der beabstandet zu der vertikalen Wand innerhalb der Lagerkammer angeordnet ist, ist praktisch auf seiner gesamten Fläche luftdurchlässig, so dass auch Luft, die in einem der vertikalen Wand zugewandten Bereich des Verdampfers abgekühlt ist, durch den Verdampfer hindurch die Lagerkammer erreichen und sich darin verteilen kann.The object is achieved by the evaporator is formed as a wire tube evaporator in a refrigerator, in particular a household refrigerator, with a storage chamber and an evaporator exposed along a vertical wall of the storage chamber arranged. Such an evaporator, which is arranged at a distance from the vertical wall within the storage chamber, is permeable to air practically over its entire surface, so that even air which has cooled in a region of the evaporator facing the vertical wall reaches the storage chamber through the evaporator can be distributed in it.
Bevorzugt ist der Drahtrohrverdampfer entlang der Rückwand des Lagerraums unter Bildung eines Luftspalts beabstandet zur Rückwand angeordnet.Preferably, the wire tube evaporator is arranged along the rear wall of the storage space to form an air gap spaced from the rear wall.
Vorteilhaft weist der Drahtrohrverdampfer ein mäanderartig verlaufendes Rohr zur Führung eines Kältemittels auf.Advantageously, the wire tube evaporator has a meandering tube for guiding a refrigerant.
Einer ersten Ausgestaltung zufolge weist der Drahtrohrverdampfer vertikale Drähte auf, die horizontale Rohrabschnitte untereinander verbinden. Indem die horizontalen Rohrabschnitte in geeigneter Weise in Reihe verbunden sind, kann vermieden werden, dass im Innern der Rohrabschnitte Blasen von gasförmigem Kältemittel im flüssigen Kältemittel aufsteigen, und die mit einem solchen Aufsteigen verbundenen blubbernden Betriebsgeräusche werden verhindert.According to a first embodiment, the wire tube evaporator has vertical wires connecting horizontal pipe sections. By appropriately connecting the horizontal pipe sections in series, bubbles of gaseous refrigerant in the liquid refrigerant can be prevented from rising inside the pipe sections, and the bubbling operation noises associated with such rising can be prevented.
Außerdem verhindern die horizontalen Rohrabschnitte, dass sich abgekühlte Luft im Innern des Verdampfers frei von oben nach unten fließen und am unteren Rand des Verdampfers mit einer extrem tiefen Temperatur austreten kann. Stattdessen erzwingen die horizontalen Rohrabschnitte eine Ablenkung der im Verdampfer abgekühlten Luft quer zu der vertikalen Wand, wodurch wenigstens ein Teil dieser abgekühlten Luft zur Lagerkammer hin abgelenkt wird und sich darin verteilt.In addition, the horizontal tube sections prevent cooled air inside the evaporator from flowing freely from top to bottom and at the bottom of the evaporator at an extremely low temperature. Instead, force the horizontal pipe sections deflect the air cooled in the evaporator transverse to the vertical wall, thereby deflecting at least part of this cooled air toward the storage chamber and distributing itself therein.
Wenn eine intensive Konvektion der am Verdampfer abgekühlten Luft gewünscht ist, kann es auch zweckmäßig sein, dass Rohrabschnitte des Drahtrohrverdampfers vertikal orientiert und durch horizontale Drähte miteinander verbunden sind.If intensive convection of the cooled air at the evaporator air is desired, it may also be appropriate that pipe sections of the wire tube evaporator are oriented vertically and connected to each other by horizontal wires.
Die Drähte können in einer Lage, auf einer Seite der Rohrabschnitte, oder in zwei Lagen, an gegenüber liegenden Seiten der Rohrabschnitte, angeordnet sein.The wires may be disposed in one layer, on one side of the pipe sections, or in two layers on opposite sides of the pipe sections.
Um die Oberfläche, an der ein Wärmeaustausch mit der Luft stattfindet, zu vergrößern, können die Drähte bandförmig, mit einem langgestreckten Querschnitt, ausgebildet sein.In order to increase the surface area at which a heat exchange with the air takes place, the wires may be band-shaped, with an elongate cross section.
Vorzugsweise sind die bandförmigen Drähte schmalseitig an den Rohrabschnitten befestigt, um den Luftdurchtritt durch den Verdampfer nicht zu behindern.Preferably, the band-shaped wires are attached on the narrow side of the pipe sections, so as not to hinder the passage of air through the evaporator.
Um eine Reinigung und auch das Beseitigen von Reif am Verdampfer zu erleichtern, ist es zweckmäßig, wenn benachbarte Drähte des Drahtrohrverdampfers jeweils wenigstens fingerbreit voneinander beabstandet sind.In order to facilitate cleaning and also the removal of frost on the evaporator, it is expedient if adjacent wires of the wire tube evaporator are each spaced at least finger width from each other.
Ein Spalt zwischen der vertikalen Wand und dem Verdampfer kann die Konvektion und damit die Verteilung der am Verdampfer abgekühlten Luft in der Lagerkammer fördern.A gap between the vertical wall and the evaporator can promote the convection and thus the distribution of cooled air at the evaporator in the storage chamber.
Wenn die bandförmigen Drähte in den Spalt vorspringen, können sie den Wärmeaustausch erheblich intensivieren, ohne dass ihre Unterbringung das nutzbare Volumen der Lagerkammer merklich beeinträchtigt.If the band-shaped wires protrude into the gap, they can considerably intensify the heat exchange without their accommodation appreciably affecting the usable volume of the storage chamber.
Ein in dem Spalt angeordnetes Strömungshindernis, das den Spalt lokal verengt oder versperrt, ist nützlich, um den Übertritt von Kaltluft aus dem Spalt durch den Verdampfer hindurch und ihre Verteilung in der Lagerkammer abseits der Ränder des Verdampfers zu fördern.A flow obstruction disposed in the gap that locally narrows or obstructs the gap is useful to promote the passage of cold air out of the gap through the evaporator and its distribution in the storage chamber away from the edges of the evaporator.
Ein solches Strömungshindernis kann insbesondere eine von der Wand schräg nach unten und zum Verdampfer vorspringende Luftleitfläche aufweisen.Such a flow obstacle may in particular have an air guide surface projecting obliquely downwards from the wall and towards the evaporator.
Wenn die Lagerkammer in an sich bekannter Weise durch wenigstens einen horizontalen Fachboden in Fächer unterteilt ist, ist ein solches Strömungshindernis zweckmäßigerweise in Höhe des Fachbodens oder oberhalb des Fachbodens angeordnet, um in dem Spalt zirkulierende Kaltluft in ein Fach oberhalb des Fachbodens umzulenken.If the storage chamber is subdivided into compartments in a manner known per se by means of at least one horizontal compartment floor, such a flow obstacle is expediently arranged at the level of the compartment floor or above the compartment floor in order to divert cold air circulating in the gap into a compartment above the compartment floor.
Um eine Anpassung an unterschiedliche Einbauhöhen von Fachböden zu ermöglichen, ist es zweckmäßig, wenn auch das Strömungshindernis höhenverstellbar ist.To allow adaptation to different installation heights of shelves, it is expedient if the flow obstacle is adjustable in height.
Ein solches Strömungshindernis kann an einem Draht oder einem Rohr des Drahtrohrverdampfers abgestützt sein.Such a flow obstruction may be supported on a wire or tube of the wire tube evaporator.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen unter Bezugnahme auf die beigefügten Figuren. Es zeigen:
- Fig. 1
- eine schematische perspektivische Ansicht eines erfindungsgemäßen Kältegeräts;
- Fig. 2
- einen schematischen Teilschnitt durch den Verdampfer und eine benachbarte Rückwand des Kältegeräts aus
Fig 1 ; - Fig. 3
- einen zu
Fig. 2 analogen Schnitt gemäß einer zweiten Ausgestaltung der Erfindung; - Fig. 4
- einen zu
Fig. 2 analogen Schnitt gemäß einer zweiten Ausgestaltung; - Fig. 5
- eine perspektivische Ansicht eines Teils einer in der Ausgestaltung der
Fig. 4 als Strömungshindernis fungierenden Luftleitplatte; - Fig. 6
- einen zu
Fig. 2 analogen Schnitt gemäß einer vierten Ausgestaltung der Erfindung; - Fig. 7
- eine perspektivische Ansicht eines Stücks einer Luftleitplatte gemäß der vierten Ausgestaltung; und
- Fig. 8
- eine perspektivische Ansicht eines Ausschnitts des Verdampfers und der Rückwand eines Kältegeräts gemäß einer fünften Ausgestaltung der Erfindung.
- Fig. 1
- a schematic perspective view of a refrigerator according to the invention;
- Fig. 2
- a schematic partial section through the evaporator and an adjacent rear wall of the refrigerator
Fig. 1 ; - Fig. 3
- one too
Fig. 2 analog section according to a second embodiment of the invention; - Fig. 4
- one too
Fig. 2 analog section according to a second embodiment; - Fig. 5
- a perspective view of a part of a in the embodiment of
Fig. 4 acting as a flow obstruction air baffle; - Fig. 6
- one too
Fig. 2 analog section according to a fourth embodiment of the invention; - Fig. 7
- a perspective view of a piece of an air guide plate according to the fourth embodiment; and
- Fig. 8
- a perspective view of a section of the evaporator and the rear wall of a refrigerator according to a fifth embodiment of the invention.
Der in
Einer in
Die Platte 14 ist höhenverstellbar, indem ein Benutzer mit den Fingern zwischen den Drähten 9 des Verdampfers 5 hindurch greift, das Mittelstück 16 elastisch gegen die Rückwand 10 drückt, so dass es von dem es unterstützenden Rohrabschnitt 7 freikommt, und es dann im Spalt 11 auf- oder abwärts verschiebt. So kann die Platte 14 immer in einer zur Höhe des Fachbodens 4 passenden Höhe montiert sein, um einen auf dem Fachboden 4 nach vorn streichenden Kaltluftstrom zu erzeugen.The
Einer in
Es ist leicht nachvollziehbar, dass wenn der Verdampfer mit vertikalen geradlinigen Rohrabschnitten und horizontalen Drähten angeordnet ist, ein Strömungshindernis in Art der Platte 14 oder 18 sich an einem der Drähte in ähnlicher Weise wie oben für den Rohrabschnitt 7 beschrieben abstützen kann.It will be readily understood that when the evaporator is arranged with vertical rectilinear pipe sections and horizontal wires, a flow obstruction in the manner of
Claims (13)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010029578 DE102010029578A1 (en) | 2010-06-01 | 2010-06-01 | Refrigeration unit with internal evaporator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2392875A2 true EP2392875A2 (en) | 2011-12-07 |
EP2392875A3 EP2392875A3 (en) | 2015-06-03 |
Family
ID=44649545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11167024.6A Withdrawn EP2392875A3 (en) | 2010-06-01 | 2011-05-23 | Cooling device with internal evaporator |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2392875A3 (en) |
DE (1) | DE102010029578A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102607214A (en) * | 2012-03-21 | 2012-07-25 | 合肥美的荣事达电冰箱有限公司 | Condenser and refrigeration device with same |
CN103017421A (en) * | 2012-12-27 | 2013-04-03 | 合肥美的荣事达电冰箱有限公司 | Wire-and-tube evaporator and refrigerator provided with same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0651206A1 (en) | 1993-05-19 | 1995-05-03 | Tatarskoe Proizvodstvennoe Obiedinenie Energetiki I Elektrifikatsii " Tatenergo" | Ignition device |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2735273A (en) * | 1956-02-21 | Refrigerator evaporator | ||
DE1247356B (en) * | 1963-08-02 | 1967-08-17 | Siemens Electrogeraete Ges Mit | Refrigerator, the evaporator of which cools a freezer compartment and a normal refrigerator compartment that is isolated from it |
DE1451017A1 (en) * | 1963-08-22 | 1969-03-13 | Siemens Elektrogeraete Gmbh | Fridge |
DE1216898B (en) * | 1964-03-13 | 1966-05-18 | Siemens Elektrogeraete Gmbh | Freezer |
DE1223404B (en) * | 1964-07-15 | 1966-08-25 | Siemens Elektrogeraete Gmbh | A refrigerator, especially a refrigerator, with at least two rooms with different temperatures |
DE1501302A1 (en) * | 1965-04-14 | 1969-06-26 | Siemens Elektrogeraete Gmbh | Refrigerator with two refrigerated goods compartments operated at different temperature levels |
DE4215595C2 (en) * | 1992-05-12 | 1995-05-11 | Licentia Gmbh | Cooling device with evaporator |
DE19840427A1 (en) * | 1998-09-04 | 2000-03-09 | Bsh Bosch Siemens Hausgeraete | Evaporator arrangement |
DE102004014926A1 (en) * | 2004-03-26 | 2005-10-13 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigerating appliance with two storage compartments |
-
2010
- 2010-06-01 DE DE201010029578 patent/DE102010029578A1/en not_active Withdrawn
-
2011
- 2011-05-23 EP EP11167024.6A patent/EP2392875A3/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0651206A1 (en) | 1993-05-19 | 1995-05-03 | Tatarskoe Proizvodstvennoe Obiedinenie Energetiki I Elektrifikatsii " Tatenergo" | Ignition device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102607214A (en) * | 2012-03-21 | 2012-07-25 | 合肥美的荣事达电冰箱有限公司 | Condenser and refrigeration device with same |
CN103017421A (en) * | 2012-12-27 | 2013-04-03 | 合肥美的荣事达电冰箱有限公司 | Wire-and-tube evaporator and refrigerator provided with same |
CN103017421B (en) * | 2012-12-27 | 2015-08-26 | 合肥美的电冰箱有限公司 | Wire-tube evaporator and the refrigerator with this wire-tube evaporator |
Also Published As
Publication number | Publication date |
---|---|
EP2392875A3 (en) | 2015-06-03 |
DE102010029578A1 (en) | 2011-12-01 |
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