EP1926945A1 - No-frost cooling device - Google Patents

No-frost cooling device

Info

Publication number
EP1926945A1
EP1926945A1 EP06793179A EP06793179A EP1926945A1 EP 1926945 A1 EP1926945 A1 EP 1926945A1 EP 06793179 A EP06793179 A EP 06793179A EP 06793179 A EP06793179 A EP 06793179A EP 1926945 A1 EP1926945 A1 EP 1926945A1
Authority
EP
European Patent Office
Prior art keywords
wall
frost
web
fan
refrigerator according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06793179A
Other languages
German (de)
French (fr)
Other versions
EP1926945B1 (en
Inventor
Michaela Malisi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1926945A1 publication Critical patent/EP1926945A1/en
Application granted granted Critical
Publication of EP1926945B1 publication Critical patent/EP1926945B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • 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
    • F25D17/067—Evaporator fan units
    • 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
    • F25D2317/065—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 air return
    • F25D2317/0655—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 air return through the top
    • 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
    • F25D2317/066—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 air supply
    • F25D2317/0665—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 air supply from the top
    • 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
    • F25D2317/067—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 air ducts
    • 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
    • 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
    • F25D2317/0683—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 the fans not of the axial type

Definitions

  • the present invention relates to an evaporator assembly for a no-frost refrigeration device.
  • Such an assembly conventionally comprises a box-type carrier on which is supported a vane evaporator forcibly vented via an air inlet and an air outlet port, by a fan mounted on the carrier to initially force air over and then into an air duct it reaches a cold room of the refrigerator.
  • a window is formed on a rear side of the housing, in which a plate, connected by a circumferential flexible rubber lip with the rear wall of the housing, is inserted damped vibrated.
  • the air outlet opening of the housing is formed, and above the air outlet opening, a fan is mounted. A wall of a subsequent to the air outlet opening air duct is locked in slots of the rubber lip.
  • Object of the present invention is to provide a fast and easy to install evaporator assembly.
  • a no-frost refrigeration device with an evaporator which is supported on a evaporator space against a cold room severing carrier with a wall having a passage therein, through which the air circulated by a fan flows, wherein the Wall a web, which forms a boundary wall of an over the passage with the housing interior communicating air duct, is formed projecting on an outer side of the wall.
  • the one-piece design of the web with the wall and thus with the carrier reduces the number of parts of the assembly on the one hand, and on the other hand it simplifies the positioning of a, e.g. the fan-carrying and at the same time a part of an air guide forming carrier element, which completes the wall of the air duct with its open side facing the passage.
  • the fan is mounted on this shell.
  • the web and a wall of the shell form a labyrinth seal, so that the air flow driven by the fan reaches the cooling space of the refrigeration device substantially loss-free.
  • the web and a wall of the shell - which may also be the above-mentioned wall involved in the labyrinth seal - are provided with cooperating detent means.
  • a paddle wheel and a motor of the fan are preferably arranged on opposite sides of a bottom of the shell, so that heat emitted by the motor can not pass directly into the air flow circulated by the fan.
  • Figure 1 is a schematic section through the upper portion of a no-frost refrigerator, which is equipped with an evaporator assembly according to the invention.
  • FIG. 2 is a partial perspective view of the carrier of the evaporator assembly and a support member carrying a fan;
  • Fig. 5 is an external view of the support member without the motor of the fan.
  • Fig. 1 shows a schematic section through the upper portion of a refrigerator according to the invention.
  • the refrigerator has a body 1 and a door 2, which are each realized in a conventional manner as filled with a heat-insulating foam thermal barrier coating 3 hollow body.
  • the interior of the body 1 is divided by a likewise heat-insulating partition 4 in an evaporator chamber. 5 and a refrigerating compartment 6.
  • the partition wall 4 is formed by the bottom of a carrier 7 for an evaporator assembly, on which a well-known fin evaporator 8 is mounted.
  • the housing-like support 7 is arranged at a distance from the ceiling of the body 1 and defines together with the side walls of the body 1, the evaporator chamber 5 from.
  • the carrier 7 further has an air inlet passage 9 on its side facing the door 2 and an air outlet passage 10 on its side facing the rear wall of the body 1.
  • an air inlet passage 9 on its side facing the door 2
  • an air outlet passage 10 on its side facing the rear wall of the body 1.
  • a fan 1 1 with paddle wheel 12 and motor 13 is housed, the air from the evaporator chamber 5 subtracts and presses into an air channel 14.
  • the air duct 13 extends only through the partition wall 4 and opens into the immediately below cooling compartment 6.
  • the air duct 14 could alternatively also be guided within the rear wall of the body 1 and with a plurality of through holes to the cooling compartment Be provided 6, over which the cold air flowing in the air duct 14 evenly distributed over the height of the cooling compartment 6.
  • a valve could be provided in the air duct 14, which selectively feeds the cold air flow via various branches of the air duct to one of a plurality of compartments of the refrigeration appliance, for example the refrigerated compartment 6 and a freezer compartment, not shown.
  • FIG. 2 shows a perspective view of the rear area of the substantially plastic injection-molded carrier 7 and a cup-like carrier element 15 to be mounted thereon.
  • the circular air outlet passage 10 is concentric with the passage 10 is an arcuate curved web 17 of the rear wall 16 from.
  • the support member 15 has a flat, vertically oriented bottom 18 and extending from the bottom 18 at right angles, extending in a circular wall 19 which in the assembled state shown in Fig. 3 of the support 7 and the support member 15, the web 17 with little play or without play.
  • the web 17 is occasionally provided with flat nubs 20, to which complementary holes 21 are formed in the wall 18, in which the nubs 20 in the assembled state of - A -
  • Fig. 3 intervene. Slots 22, which divide the wall 19 into several sections, allow the wall 19, when plugging onto the web 17 radially yield to the outside until the knobs 19 engage in the holes 20. In the locked state, a rear wall 16 stiffening and connected to the web 17 continuously connected to horizontal brim 23 through the slots 22nd
  • Rear wall 16, web 17, bottom 18 and wall 19 define a downwardly open flat-cylindrical chamber 24, which is not visible in Fig. 2 paddle wheel 12 of the fan
  • FIG. 4 is a front perspective view of the support member 15 showing the paddle wheel.
  • the paddle wheel 12 has a circular base plate 26 adjacent to the bottom of the cup 15, from which a plurality of spiral ribs 27 protrude.
  • air drawn in through the air outlet passage 10 in the direction of its axis is accelerated radially outwards and flows downwards over the section 25.
  • the paddle wheel 12 forms, together with the carrier element 15, a radial fan, wherein the carrier element 15 together with the chamber 24 forms the volute casing.
  • Fig. 5 is a perspective view of the cup-like Suelments 15 without fan 1 mounted thereon. From the outside of the bottom is a U-shaped bracket 28, which is stiffened by a protruding in a horizontal plane rib 29. An upwardly open notch 30 in the bracket 28 carries a bearing 31 which serves to suspend the shaft of the motor 14. In the bottom 18 of the shell 15 is a wedge-shaped, narrowing towards the center of the bottom slot 32 is formed. At the lower end of the slot 32, at the center of the bottom, opens the slot 32 in a receptacle in the second bearing 33 is kept buttoned for the engine 14.
  • the two bearings 31, 33 are first attached to the shaft of the motor 14 and then introduced the front portion of the shaft with the bearing 33 in the upper portion of the slot 32.
  • the motor is moved down together with the bearings 31, 33, the bearings 31, 33 reach their positions shown in Fig. 5, and the motor 14 is held between them.
  • the paddle wheel 12 is attached to the protruding into the shell 15 portion of the shaft.

Landscapes

  • 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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to an evaporator module for a no-frost cooling device, comprising an evaporator, a housing (7) which surrounds the evaporator and a ventilator (11) which is arranged on a passage (10) of the housing. A path (17), which forms a wall of an air channel (13) which communicates with the inside of the housing via a passage (10), is formed in a protruding manner on the outer side of the housing (7).

Description

No-Frost-Kältegerät No-frost refrigerating appliance
Die vorliegende Erfindung betrifft eine Verdampfer-Baugruppe für ein No-Frost-Kältegerät. Eine solche Baugruppe umfasst herkömmlicherweise einen gehäuseartigen Träger, auf dem sich ein Lamellenverdampfer abstützt, der über eine Lufteintritts- und eine Luftaustrittsöffnung, von einem Ventilator zwangsbelüftet ist, der am Träger angebracht ist, um Luft zunächst über und dann in einen Luftkanal zu drücken, über den sie einen Kühlraum des Kältegeräts erreicht. Bei einer bekannten Verdampfer-Baugruppe ist an einer Rückseite des Gehäuses ein Fenster gebildet, in das eine Platte, durch eine umlaufende flexible Gummilippe mit der Gehäuserückwand verbunden, gedämpft schwingfähig eingesetzt ist. In der Platte ist die Luftaustrittsöffnung des Gehäuses gebildet, und über der Luftaustrittsöffnung ist ein Ventilator montiert. Eine Wand eines an die Luftaustrittsöffnung anschließenden Luftkanals ist in Schlitzen der Gummilippe verrastet.The present invention relates to an evaporator assembly for a no-frost refrigeration device. Such an assembly conventionally comprises a box-type carrier on which is supported a vane evaporator forcibly vented via an air inlet and an air outlet port, by a fan mounted on the carrier to initially force air over and then into an air duct it reaches a cold room of the refrigerator. In a known evaporator assembly, a window is formed on a rear side of the housing, in which a plate, connected by a circumferential flexible rubber lip with the rear wall of the housing, is inserted damped vibrated. In the plate, the air outlet opening of the housing is formed, and above the air outlet opening, a fan is mounted. A wall of a subsequent to the air outlet opening air duct is locked in slots of the rubber lip.
Aufgabe der vorliegenden Erfindung ist, eine schnell und einfach zu montierende Verdampferbaugruppe zu schaffen.Object of the present invention is to provide a fast and easy to install evaporator assembly.
Die Aufgabe wird gelöst durch ein No-Frost-Kältegerät mit einem Verdampfer der auf einem einen Verdampferraum gegen einen Kälteraum abtrennenden Träger mit einer Wand abgestützt ist, die einen darin angeordneten Durchgang aufweist, durch den die von einem Ventilator umgewälzte Luft strömt, wobei an die Wand ein Steg, der eine Begrenzungswand eines über den Durchgang mit dem Gehäuseinneren kommunizierenden Luftkanals bildet, an einer Außenseite der Wand abstehend angeformt ist. Die einteilige Ausbildung des Stegs mit der Wand und damit mit dem Träger reduziert zum einen montagevereinfachend die Teilezahl der Baugruppe, zum anderen vereinfacht es die Positionierung eines, z.B. den Ventilator tragenden und zugleich einen Teil einer Luftführung bildenden Trägerelements, das mit seinem dem Durchgang zugewandten offenen Seite die Wandung des Luftkanals vervollständigt.The object is achieved by a no-frost refrigeration device with an evaporator which is supported on a evaporator space against a cold room severing carrier with a wall having a passage therein, through which the air circulated by a fan flows, wherein the Wall a web, which forms a boundary wall of an over the passage with the housing interior communicating air duct, is formed projecting on an outer side of the wall. The one-piece design of the web with the wall and thus with the carrier reduces the number of parts of the assembly on the one hand, and on the other hand it simplifies the positioning of a, e.g. the fan-carrying and at the same time a part of an air guide forming carrier element, which completes the wall of the air duct with its open side facing the passage.
Vorzugsweise ist der Ventilator an dieser Schale montiert. Vorzugsweise bilden der Steg und eine Wand der Schale eine Labyrinthdichtung, so dass der von dem Ventilator angetriebene Luftstrom im wesentlichen verlustfrei den Kühlraum des Kältegeräts erreicht.Preferably, the fan is mounted on this shell. Preferably, the web and a wall of the shell form a labyrinth seal, so that the air flow driven by the fan reaches the cooling space of the refrigeration device substantially loss-free.
Um den Zusammenbau zu beschleunigen, sind der Steg und eine Wand der Schale - bei der es sich auch um die oben erwähnte, an der Labyrinthdichtung beteiligte Wand handeln kann - mit zusammenwirkenden Rastmitteln versehen.To accelerate the assembly, the web and a wall of the shell - which may also be the above-mentioned wall involved in the labyrinth seal - are provided with cooperating detent means.
Ein Schaufelrad und ein Motor des Ventilators sind vorzugsweise auf entgegengesetzten Seiten eines Bodens der Schale angeordnet, so dass von dem Motor abgegebene Wärme nicht unmittelbar in den von dem Ventilator umgewälzten Luftstrom gelangen kann.A paddle wheel and a motor of the fan are preferably arranged on opposite sides of a bottom of the shell, so that heat emitted by the motor can not pass directly into the air flow circulated by the fan.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen unter Bezugnahme auf die beigefügten Figuren. Es zeigen:Further features and advantages of the invention will become apparent from the following description of embodiments with reference to the accompanying figures. Show it:
Fig. 1 einen schematischen Schnitt durch den oberen Bereich eines No-Frost- Kältegeräts, das mit einer erfindungsgemäßen Verdampferbaugruppe ausgestattet ist;Figure 1 is a schematic section through the upper portion of a no-frost refrigerator, which is equipped with an evaporator assembly according to the invention.
Fig. 2 eine perspektivische Teilansicht des Trägers der Verdampferbaugruppe und eines einen Ventilator tragenden Trägerelements;FIG. 2 is a partial perspective view of the carrier of the evaporator assembly and a support member carrying a fan; FIG.
Fig. 3 der Träger und das Trägerelement im zusammengefügten Zustand;3 shows the carrier and the carrier element in the assembled state.
Fig. 4 eine Innenansicht des Trägerelements; und4 is an interior view of the carrier element; and
Fig. 5 eine Außenansicht des Trägerelements ohne den Motor des Ventilators.Fig. 5 is an external view of the support member without the motor of the fan.
Fig. 1 zeigt einen schematischen Schnitt durch den oberen Bereich eines erfindungsgemäßen Kältegeräts. Das Kältegerät hat einen Korpus 1 und eine Tür 2, die jeweils in herkömmlicher Weise als mit einer wärmeisolierenden Schaumstoff- Wärmedämmschicht 3 ausgefüllte Hohlkörper realisiert sind. Das Innere des Korpus 1 ist durch eine ebenfalls wärmeisolierende Trennwand 4 unterteilt in eine Verdampferkammer 5 und ein Kühlfach 6. Die Trennwand 4 ist durch den Boden eines Trägers 7 für eine Verdampferbaugruppe gebildet, auf dem ein an sich bekannter Lamellen-Verdampfer 8 montiert ist. Der gehäuseartige Träger 7 ist mit Abstand zur Decke des Korpus 1 angeordnet und grenzt zusammen mit den Seitenwänden des Korpus 1 die Verdampferkammer 5 ab. Der Träger 7 hat ferner einen Lufteinlassdurchgang 9 an seiner der Tür 2 zugewandten Seite und einen Luftauslassdurchgang 10 an seiner der Rückwand des Korpus 1 zugewandten Seite. In einem rückwärtigen Bereich der Verdampferkammer 5, hinter dem Luftauslassdurchgang 10 des Trägers 7, ist ein Ventilator 1 1 mit Schaufelrad 12 und Motor 13 untergebracht, der Luft aus der Verdampferkammer 5 abzieht und in einen Luftkanal 14 drückt.Fig. 1 shows a schematic section through the upper portion of a refrigerator according to the invention. The refrigerator has a body 1 and a door 2, which are each realized in a conventional manner as filled with a heat-insulating foam thermal barrier coating 3 hollow body. The interior of the body 1 is divided by a likewise heat-insulating partition 4 in an evaporator chamber. 5 and a refrigerating compartment 6. The partition wall 4 is formed by the bottom of a carrier 7 for an evaporator assembly, on which a well-known fin evaporator 8 is mounted. The housing-like support 7 is arranged at a distance from the ceiling of the body 1 and defines together with the side walls of the body 1, the evaporator chamber 5 from. The carrier 7 further has an air inlet passage 9 on its side facing the door 2 and an air outlet passage 10 on its side facing the rear wall of the body 1. In a rear region of the evaporator chamber 5, behind the air outlet passage 10 of the carrier 7, a fan 1 1 with paddle wheel 12 and motor 13 is housed, the air from the evaporator chamber 5 subtracts and presses into an air channel 14.
In dem exemplarischen Schnitt der Fig. 1 erstreckt sich der Luftkanal 13 lediglich durch die Trennwand 4 und mündet in das unmittelbar darunter liegende Kühlfach 6. Der Luftkanal 14 könnte alternativ auch innerhalb der Rückwand des Korpus 1 geführt sein und mit einer Mehrzahl von Durchgangsöffnungen zum Kühlfach 6 versehen sein, über die sich die in dem Luftkanal 14 fließende Kaltluft über die Höhe des Kühlfachs 6 gleichmäßig verteilt. Des weiteren könnte in dem Luftkanal 14 ein Ventil vorgesehen sein, welches den Kaltluftstrom über verschiedene Zweige des Luftkanals wahlweise einem von mehreren Fächern des Kältegeräts, beispielsweise dem Kühlfach 6 und einem nicht dargestellten Gefrierfach, zuleitet.In the exemplary section of Fig. 1, the air duct 13 extends only through the partition wall 4 and opens into the immediately below cooling compartment 6. The air duct 14 could alternatively also be guided within the rear wall of the body 1 and with a plurality of through holes to the cooling compartment Be provided 6, over which the cold air flowing in the air duct 14 evenly distributed over the height of the cooling compartment 6. Furthermore, a valve could be provided in the air duct 14, which selectively feeds the cold air flow via various branches of the air duct to one of a plurality of compartments of the refrigeration appliance, for example the refrigerated compartment 6 and a freezer compartment, not shown.
Fig. 2 zeigt in einer perspektivischen Ansicht den rückwärtigen Bereich des im Wesentlichen aus Kunststoff spritzgeformten Trägers 7 und ein daran zu montierendes schalenähnliches Trägerelement 15. In einer im Wesentlichen ebenen Rückwand 16 des Trägers 7 befindet sich der kreisrunde Luftauslassdurchgang 10. Konzentrisch zu dem Durchgang 10 steht ein kreisbogenförmig gekrümmter Steg 17 von der Rückwand 16 ab. Das Trägerelement 15 hat einen flachen, vertikal orientierten Boden 18 und eine von dem Boden 18 rechtwinklig abstehende, in einem Kreisbogen verlaufende Wand 19, die in dem in Fig. 3 gezeigten zusammengefügten Zustand des Trägers 7 und des Trägerelementes 15 den Steg 17 mit geringem Spiel oder spielfrei umgreift.2 shows a perspective view of the rear area of the substantially plastic injection-molded carrier 7 and a cup-like carrier element 15 to be mounted thereon. In a substantially flat rear wall 16 of the carrier 7, the circular air outlet passage 10 is concentric with the passage 10 is an arcuate curved web 17 of the rear wall 16 from. The support member 15 has a flat, vertically oriented bottom 18 and extending from the bottom 18 at right angles, extending in a circular wall 19 which in the assembled state shown in Fig. 3 of the support 7 and the support member 15, the web 17 with little play or without play.
Der Steg 17 ist vereinzelt mit flachen Noppen 20 versehen, zu denen komplementär Löcher 21 in der Wand 18 gebildet sind, in die die Noppen 20 im zusammengefügten Zustand der - A -The web 17 is occasionally provided with flat nubs 20, to which complementary holes 21 are formed in the wall 18, in which the nubs 20 in the assembled state of - A -
Fig. 3 eingreifen. Schlitze 22, welche die Wand 19 in mehrere Abschnitte gliedern, ermöglichen es der Wand 19, beim Aufstecken auf den Steg 17 radial nach Außen nachzugeben, bis die Noppen 19 in die Löcher 20 einrasten. Im eingerasteten Zustand verläuft eine die Rückwand 16 versteifende und mit dem Steg 17 durchgehend verbundene horizontale Krempe 23 durch die Schlitze 22.Fig. 3 intervene. Slots 22, which divide the wall 19 into several sections, allow the wall 19, when plugging onto the web 17 radially yield to the outside until the knobs 19 engage in the holes 20. In the locked state, a rear wall 16 stiffening and connected to the web 17 continuously connected to horizontal brim 23 through the slots 22nd
Rückwand 16, Steg 17, Boden 18 und Wand 19 begrenzen eine nach unten offene flachzylindrische Kammer 24, die das in Fig. 2 nicht sichtbare Schaufelrad 12 des VentilatorsRear wall 16, web 17, bottom 18 and wall 19 define a downwardly open flat-cylindrical chamber 24, which is not visible in Fig. 2 paddle wheel 12 of the fan
1 1 aufnimmt. Unterhalb der flachzylindrischen Kammer 24 schließt ein schräg nach unten und zur Rückwand des Korpus hin verlaufender Abschnitt 25 des Luftkanals 14 an. Die Wand 19 und der Steg 17, die einander berühren oder sich in geringem Abstand von einander erstrecken, bilden eine Labyrinthdichtung. Um die Wirkung einer solchen Labyrinthdichtung zu verstärken, kann ein nicht gezeigter Steg, der konzentrisch zum Steg 17 von der Rückwand 16 absteht, eine Nut begrenzen, in die die Wand 19 eingreift, oder die Wand 19 kann verdoppelt sein, so dass der Steg 17 in eine Nut zwischen den zwei Wänden des Trägerelements 15 eingreift.1 1 receives. Below the flat cylindrical chamber 24 includes an obliquely downward and to the rear wall of the body towards extending portion 25 of the air channel 14 at. The wall 19 and the web 17, which contact each other or extend at a small distance from each other, form a labyrinth seal. To enhance the effect of such a labyrinth seal, a web, not shown, which projects concentrically with the web 17 from the rear wall 16, define a groove into which the wall 19 engages, or the wall 19 can be doubled, so that the web 17 engages in a groove between the two walls of the support member 15.
Fig. 4 ist eine perspektivische Ansicht des Trägerelements 15 von vorn, die das SchaufelradFIG. 4 is a front perspective view of the support member 15 showing the paddle wheel. FIG
12 zeigt. Das Schaufelrad 12 hat eine an dem Boden der Schale 15 benachbarte kreisrunde Grundplatte 26, von der eine Vielzahl von spiralförmigen Rippen 27 abstehen. Durch die Drehung des Schaufelrades 12 wird in Richtung von dessen Achse durch den Luftauslassdurchgang 10 angesaugte Luft radial nach außen beschleunigt und fließt nach unten über den Abschnitt 25 ab. Das Schaufelrad 12 bildet zusammen mit dem Trägerelement 15 ein Radialgebläse, wobei das Trägerelement 15 zusammen mit der Kammer 24 das Spiralgehäuse bildet.12 shows. The paddle wheel 12 has a circular base plate 26 adjacent to the bottom of the cup 15, from which a plurality of spiral ribs 27 protrude. As a result of the rotation of the blade wheel 12, air drawn in through the air outlet passage 10 in the direction of its axis is accelerated radially outwards and flows downwards over the section 25. The paddle wheel 12 forms, together with the carrier element 15, a radial fan, wherein the carrier element 15 together with the chamber 24 forms the volute casing.
Fig. 5 ist eine perspektivische Ansicht des schalenähnlichen Trägerelments 15 ohne daran montierten Ventilator 1 1 . Von der Außenseite des Bodens steht ein U-förmiger Bügel 28 ab, der durch eine in einer horizontalen Ebene abstehende Rippe 29 versteift ist. Eine nach oben offene Kerbe 30 in dem Bügel 28 trägt ein Lager 31 , das zur Aufhängung der Welle des Motors 14 dient. In dem Boden 18 der Schale 15 ist eine keilförmiger, sich zum Mittelpunkt des Bodens hin verengender Schlitz 32 gebildet. Am unteren Ende des Schlitzes 32, am Mittelpunkt des Bodens, mündet der Schlitz 32 in einer Aufnahme in der ein zweites Lager 33 für den Motor 14 eingeknöpft gehalten ist. Beim Zusammenbau der Verdampfer- Baugruppe werden die zwei Lager 31 , 33 zunächst an die Welle des Motors 14 angesteckt und dann der Vorderabschnitt der Welle mit dem Lager 33 in den oberen Bereich des Schlitzes 32 eingeführt. Indem nun der Motor mitsamt den Lagern 31 , 33 abwärts verschoben wird, gelangen die Lager 31 , 33 in ihre in Fig. 5 gezeigten Stellungen, und der Motor 14 ist zwischen ihnen gehalten. Anschließend wird das Schaufelrad 12 an dem in die Schale 15 hineinragenden Abschnitt der Welle befestigt. Fig. 5 is a perspective view of the cup-like Trägerelments 15 without fan 1 mounted thereon. From the outside of the bottom is a U-shaped bracket 28, which is stiffened by a protruding in a horizontal plane rib 29. An upwardly open notch 30 in the bracket 28 carries a bearing 31 which serves to suspend the shaft of the motor 14. In the bottom 18 of the shell 15 is a wedge-shaped, narrowing towards the center of the bottom slot 32 is formed. At the lower end of the slot 32, at the center of the bottom, opens the slot 32 in a receptacle in the second bearing 33 is kept buttoned for the engine 14. When assembling the evaporator assembly, the two bearings 31, 33 are first attached to the shaft of the motor 14 and then introduced the front portion of the shaft with the bearing 33 in the upper portion of the slot 32. By now the motor is moved down together with the bearings 31, 33, the bearings 31, 33 reach their positions shown in Fig. 5, and the motor 14 is held between them. Subsequently, the paddle wheel 12 is attached to the protruding into the shell 15 portion of the shaft.

Claims

Patentansprüche claims
1 . No-Frost- Kältegerät mit einem Verdampfer (8), der auf einem einen Verdampferraum gegen einen Kälteraum abtrennenden Träger (7) mit einer Wand (16) abgestützt ist die einen darin angeordneten Durchgang (10) aufweist, durch den die von einem Ventilator (1 1 ) umgewälzte Luft strömt, dadurch gekennzeichnet, dass an die1 . No-frost refrigerating appliance with an evaporator (8) which is supported on a support (7) separating an evaporator space from a cold space by a wall (16) which has a passage (10) arranged therein through which the fan ( 1 1) circulated air flows, characterized in that the
Wand (16) ein Steg (17), der eine Begrenzungswand eines über den Durchgang (10) mit dem Gehäuseinneren kommunizierenden Luftkanals (13) bildet, an einer Außenseite der Wand (16) abstehend angeformt ist.Wall (16) has a web (17), which forms a boundary wall of an over the passage (10) with the housing interior communicating air duct (13), on an outer side of the wall (16) projecting.
2. No-Frost-Kältegerät nach Anspruch 1 , dadurch gekennzeichnet, dass der Steg (17) eine Kammer (24) des Luftkanals (13) begrenzt, in der ein Schaufelrad (12) des Ventilators (1 1 ) angeordnet ist.2. No-frost refrigerator according to claim 1, characterized in that the web (17) defines a chamber (24) of the air channel (13), in which a paddle wheel (12) of the fan (1 1) is arranged.
3. No-Frost-Kältegerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Steg (17) kreisbogenförmig und konzentrisch zu dem Durchgang (10) verläuft.3. no-frost refrigerator according to claim 1 or 2, characterized in that the web (17) extends in a circular arc and concentric with the passage (10).
4. No-Frost-Kältegerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Luftkanal ferner durch ein Trägerelement (15) begrenzt ist, von dem eine Seitenwand (19) zusammen mit dem Steg (17) eine Labyrinthdichtung bildet.4. no-frost refrigerator according to one of the preceding claims, characterized in that the air duct is further limited by a support member (15) of which a side wall (19) together with the web (17) forms a labyrinth seal.
5. No-Frost-Kältegerät nach Anspruch 4, dadurch gekennzeichnet, dass an der Seitenwand (19) und dem Steg (17) zusammenwirkende Rastmittel (20, 21 ) gebildet sind.5. no-frost refrigerator according to claim 4, characterized in that on the side wall (19) and the web (17) cooperating latching means (20, 21) are formed.
6. No-Frost-Kältegerät nach Anspruch 2 oder 3 und Anspruch 4 oder 5, dadurch gekennzeichnet, dass der Ventilator (1 1 ) an dem Trägerelement (15) montiert ist.6. no-frost refrigerator according to claim 2 or 3 and claim 4 or 5, characterized in that the fan (1 1) is mounted on the carrier element (15).
7. No-Frost-Kältegerät nach Anspruch 6, dadurch gekennzeichnet, dass das Schaufelrad (12) des Ventilators (1 1 ) auf der Seite des Stegs (17) und ein Motor (13) an der daran abgewandten Seite des Trägerelementes (15) montiert sind. 7. no-frost refrigerating appliance according to claim 6, characterized in that the impeller (12) of the fan (1 1) on the side of the web (17) and a motor (13) on the side facing away from the carrier element (15) are mounted.
8. No-Frost-Kältegerät nach Anspruch 7, dadurch gekennzeichnet, dass das Schaufelrad (12) und der Motor (13) durch eine Trennwand (18) getrennt, in die zumindest über einen Teil ihrer Höhe ein Schlitz (32) eingebracht ist, der sich von unten nach oben zumindest einseitig kontinuierlich erweitert und unten eine dem Schlitz (32) vorgelagerte Aufnahme aufweist.8. no-frost refrigerator according to claim 7, characterized in that the paddle wheel (12) and the motor (13) separated by a partition (18) into which at least over part of its height a slot (32) is introduced, which widens continuously from bottom to top, at least on one side, and has a receptacle below the slot (32) at the bottom.
9. No-Frost-Kältegerät nach Anspruch 8, dadurch gekennzeichnet, dass die Trennwand Bestandteil des Trägerelementes (15) ist.9. no-frost refrigerating appliance according to claim 8, characterized in that the partition wall is part of the carrier element (15).
10. No-Frost-Kältegerät nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass die Aufnahme zur Befestigung eines elastischen Abstützelements (33) für den Motor (13) dient. 10. no-frost refrigerating appliance according to claim 8 or 9, characterized in that the receptacle for fixing an elastic support member (33) for the motor (13) is used.
EP06793179.0A 2005-09-12 2006-09-04 No-frost cooling device Active EP1926945B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202005014383U DE202005014383U1 (en) 2005-09-12 2005-09-12 No-frost refrigerating appliance
PCT/EP2006/065960 WO2007031420A1 (en) 2005-09-12 2006-09-04 No-frost cooling device

Publications (2)

Publication Number Publication Date
EP1926945A1 true EP1926945A1 (en) 2008-06-04
EP1926945B1 EP1926945B1 (en) 2018-09-19

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ID=35668978

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Application Number Title Priority Date Filing Date
EP06793179.0A Active EP1926945B1 (en) 2005-09-12 2006-09-04 No-frost cooling device

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EP (1) EP1926945B1 (en)
DE (1) DE202005014383U1 (en)
RU (1) RU2416770C2 (en)
WO (1) WO2007031420A1 (en)

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DE102007033548B4 (en) * 2006-10-31 2021-03-04 Siemens Healthcare Gmbh Cooling module, technical device with a cooling module and method for internal cooling of a technical device
EP2082176B1 (en) * 2006-11-06 2018-08-15 LG Electronics Inc. Fan motor assembly for blowing cooling air and refrigerator having the same
DE102009029129A1 (en) 2009-09-02 2011-03-03 BSH Bosch und Siemens Hausgeräte GmbH Refrigeration device with a retaining clip for a fan motor
DE102010038373A1 (en) * 2010-07-23 2012-01-26 BSH Bosch und Siemens Hausgeräte GmbH Refrigeration unit with blower
DE102012010222A1 (en) * 2012-05-23 2013-11-28 Liebherr-Hausgeräte Ochsenhausen GmbH Cooling and/or freezing apparatus for retaining cool and/or frozen food, has ventilator housing formed such that part of air is conveyed from ventilator and emerges from housing through aperture in housing on side of partitioning plate
KR20210072579A (en) 2019-12-09 2021-06-17 엘지전자 주식회사 grille-fan assembly for refrigerator
BR112022018734A2 (en) * 2020-03-24 2022-11-01 Electrolux Appliances AB REFRIGERATION APPLIANCE

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US5531267A (en) * 1994-08-24 1996-07-02 Emerson Electric Co. Refrigeration centrifugal blower system
JP3518906B2 (en) * 1994-09-30 2004-04-12 株式会社日立製作所 Freezer refrigerator
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Also Published As

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RU2008111568A (en) 2009-10-20
DE202005014383U1 (en) 2006-01-12
WO2007031420A1 (en) 2007-03-22
EP1926945B1 (en) 2018-09-19
RU2416770C2 (en) 2011-04-20

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