EP2694895B1 - Module d'evaporateur pour un refrigerateur - Google Patents

Module d'evaporateur pour un refrigerateur Download PDF

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Publication number
EP2694895B1
EP2694895B1 EP12714634.8A EP12714634A EP2694895B1 EP 2694895 B1 EP2694895 B1 EP 2694895B1 EP 12714634 A EP12714634 A EP 12714634A EP 2694895 B1 EP2694895 B1 EP 2694895B1
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EP
European Patent Office
Prior art keywords
evaporator
heater
pipe
sections
evaporator assembly
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.)
Active
Application number
EP12714634.8A
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German (de)
English (en)
Other versions
EP2694895A1 (fr
Inventor
Michaela Malisi
Renate Pradel
Marcus WEHLAUCH
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
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BSH Hausgeraete GmbH
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Publication of EP2694895A1 publication Critical patent/EP2694895A1/fr
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Publication of EP2694895B1 publication Critical patent/EP2694895B1/fr
Active legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating
    • 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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/12—Removing frost by hot-fluid circulating system separate from the refrigerant system
    • 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
    • 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
    • F28F1/24—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 extending transversely
    • F28F1/32—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 extending transversely the means having portions engaging further tubular elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F17/00—Removing ice or water from heat-exchange apparatus
    • 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

Definitions

  • the present invention relates to an evaporator assembly for a refrigeration device, in particular a household refrigerator.
  • an evaporator assembly is housed in an evaporator chamber separated from a storage chamber, and the storage chamber is cooled by exchange of air with the evaporator chamber.
  • humidity from the storage chamber in the evaporator chamber precipitates as a frost and forms over time on the evaporator a layer of ice, which hinders the heat exchange. If the exchange of air between the storage and evaporator chamber is interrupted, it is possible to defrost the ice layer, without at the same time to heat the storage chamber strong.
  • A1 is a no-frost refrigeration device in which in an evaporator chamber on the one hand, an evaporator with a refrigerant pipe and a plurality of standing in thermal contact with the refrigerant pipe fins and the other a heater for defrosting the evaporator is housed.
  • the heater is designed as a pipe heater and mounted on a support, which also forms walls of the evaporator chamber. A gap between the bottom of the evaporator and the carrier facilitates convection of air heated by the heater through the spaces between adjacent fins.
  • WO03 / 099487 A1 discloses an evaporator for a refrigerator having a plurality of fins crossed by both a refrigerant tube and a tubular heater. Since the cross-sections of the tubular heater and receiving them of recesses of the slats can not match exactly, it comes at those portions of the heating, which intersect the slats, possibly to a point-like contact between the heater and fins, and those sections of the heating, between two blades extend, have no contact. The heat of the heating is therefore at most given off to a small extent directly to the slats.
  • WO03 / 099487A1 discloses an evaporator assembly according to the preamble of claim 1.
  • the object of the invention is to provide an evaporator assembly for a refrigeration device, which allows fast defrosting even at low temperature gradient between heating, refrigerant pipe and fins.
  • Such a portion of the heater contacting the fins extends in the direction of airflow circulating through a housing of the evaporator assembly from an inlet to an outlet opening.
  • the heater is fixed in sections on a support plate and that in a space between two adjacent slats extending portions of the heater are slidable on the surface of the support plate in order to Assembling the heater and the slats to adapt to the staggering of the slats.
  • the heater To enable such displacement of the section of the heater extending between the louvers, it is expedient for the heater to have arcuate sections which connect the sections extending between the louvers and are fastened to the carrier plate.
  • the attachment of the heater to the support plate can be done with the help of notched from the support plate fingers, which preferably engage the arcuate portions.
  • the at least one section of the heater extending between two lamellae preferably has at least one exposed area which projects from the edge into the intermediate space between the lamellae. Such an exposed area helps to facilitate the placement of the portion of the heater between the slats, as a resistance to be overcome when inserting the issued area between two slats is substantially smaller than if the entire section at all times at one time between the slats must be inserted.
  • the refrigerant pipe is preferably arranged crossing the blades to fix the distance of the slats from each other and to give the evaporator the required structural stability.
  • the exposed area engages between two adjacent pipe sections of the refrigerant pipe, it contributes to a reproducible placement of the heater on the evaporator block in the longitudinal direction of the slats or the sections of the heating extending between them.
  • the two juxtaposed pipe sections lie in a same plane adjacent to the edge of the gap and are connected in series via a third pipe section which is farther than the plane away from the edge of the gap.
  • a tip of the issued area can touch the third pipe section to heat this directly.
  • Fig. 1 shows a perspective view of a heater 1 for defrosting an evaporator in a no-frost household refrigerator.
  • the heater 1 comprises a continuous tube formed in meanders having a plurality of substantially parallel tubular sections 2 substantially parallel to each other and sheets 3 connecting them to fill a rectangular area substantially uniformly.
  • the tube may be hollow to circulate a heat transfer fluid therein, but it may also function as a protective sheath for an internal electrical heating conductor.
  • the arcs 3 and the majority of all pipe sections 2 are in the same plane.
  • a flared area 4 is formed, which reaches upwards perpendicular to said plane.
  • Fig. 2 shows the heating of the Fig. 1 mounted on a support plate 5.
  • the support plate 5 is a substantially rectangular blank made of sheet metal, which is stiffened by angled edge strips 6 at two edges. From the support plate 5 adjacent to its two other edges two rows of fingers 7 are unlatched, each embrace the sheets 3 of the heater 1.
  • the pipe sections 2 extend on the support plate 5 substantially free, parallel to the edge strips 6.
  • the fingers 7 fix the heater 1 substantially only in the direction perpendicular to the support plate 5 direction and in the longitudinal direction of the pipe sections 2. Parallel to the support plate 5 and perpendicular to the Pipe sections 2 remains a small freedom of movement.
  • Fig. 3 shows in a side view, the support plate 5 with the heater 1 and an evaporator mounted on it 8.
  • the evaporator 8 includes a refrigerant tube 9, which, coming from an inlet port 10, enters the evaporator 8 at the viewer facing end face and there first a in a first, the heater 1 near adjacent plane 11 parallel to the support plate 5 and the viewing direction of the viewer extending rectilinear pipe section 12 has.
  • At this includes an arc 13 on the side facing away from the viewer side of the evaporator 8 to the viewer back extending pipe section 14 in a parallel to the plane 11, further than this from the heater 1 remote level 15 at.
  • the bow 13 is visible through an oblique slot 16 of an evaporator blade.
  • the slot allows the mounting of the evaporator blade 16 to the refrigerant pipe 9 by sliding the Slat 16 on the bow 13 of its side facing away from the viewer side.
  • the lamella 16 and others, in the view of Fig. 3 from her hidden fins are attached to the pipe sections 12, 14 at a uniform distance, for example by soldering.
  • the pipe section 14 is connected to a further pipe section 12 of the plane 11.
  • pipe sections 12 in the plane 11 and pipe sections 14 in the plane 15 alternate along the refrigerant pipe in a zigzag-shaped arrangement in the side view.
  • another pair of planes 18, 19 are present, in which further rectilinear pipe sections follow each other up to an outlet port 20.
  • the number of pairs of levels can also be one or more than two.
  • the issued area 4 of the heater 1 has a rounded tip 21 which engages between two pipe sections 12 of the lowest level.
  • the diameter of the pipe sections 2 corresponds to the distance between two of the pipe sections 12, 14 fixed in large numbers and at regular intervals evaporator fins 16, and the distance between two pipe sections 2 substantially corresponds to an integer multiple of this distance, so that all the tips 21 of Heater 1, when the evaporator block 8 is placed on the heater 1, meet at a gap between two fins 16. Minor deviations between the distance between the pipe sections 2 and the spacing of the lamellae 16 are equalized by an elastic displacement of the pipe sections 2 when placing the evaporator block 8 on the heater 1 automatically.
  • Fig. 4 In the configuration of Fig. 4 are the lower edges of the evaporator blades 16 in abutment against the support plate 5, and the pipe sections 2 (possibly excluded such on the edge of the support plate 5) are all clamped on their entire length between fins 16.
  • Randel notches 22 on the lower edge of the slats are only visible to a small extent behind the pipe sections 2 of the heater 1.
  • Curved portions 23 of the exposed areas 4 nestle against adjacent pipe sections 12 of the plane 11 and thus define the position of the evaporator block 8 relative to the heater 1 in the longitudinal direction of the pipe sections 2 exactly.
  • Fig. 5 illustrates the structure of the evaporator assembly again in a perspective view, with a majority of the fins 16 of the evaporator 8 is only partially shown in each case to make the exposed areas 4 of the heater 1 visible. In fact, all fins 16 extend as in FIG Fig. 5 Interspaces 31 between adjacent fins 16 each have a width corresponding to the diameter of the pipe sections 2, and between two interstices 31 which receive a pipe section 2 there is one or more interspaces 31, which contain no pipe section 2.
  • the evaporator assembly is the Fig. 5 well suited for use in a no-frost refrigerator, in which an evaporator chamber accommodating the evaporator assembly is housed, for example, in a manner known per se, flat beneath the ceiling of a body of the appliance or in a horizontal intermediate wall between two storage chambers.
  • Fig. 6 shows as a schematic example the attachment of the evaporator assembly in an evaporator chamber 24 between the storage chamber 25 and cover 26 of a refrigerator body.
  • a fan 27 drives the air circulation between inlet and outlet opening 28, 29 of the storage chamber 25 at.
  • the air flow in the interior of the storage chamber runs parallel to the slats 16 and parallel to the support plate of the heater 1, so that the pipe sections 2, although they completely fill gaps between the slats 16, do not hinder the air circulation.
  • the evaporator assembly is mounted in a slightly downward sloping orientation, so that during defrosting condensation water flows to the rear wall 32 of the body out and there can be derived to a known evaporator.
  • the exposed area 4 could prevent thawing water from draining in a portion 30 of the interspace adjacent the exposed area 4.
  • this prevents the notches 22 at the bottom of the fins 16, because through them water can change from the area 30 in an adjacent space between fins 16 in which there is no pipe section 2 and in which the water consequently free on the support plate. 5 can drain down to its lower edge.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Defrosting Systems (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Air-Conditioning For Vehicles (AREA)

Claims (10)

  1. Sous-groupe d'évaporateur pour un appareil frigorifique, notamment un appareil frigorifique à usage domestique, comprenant un boîtier, un évaporateur (8) comprenant un tube d'agent frigorifique (9) et une pluralité de lamelles (16) en contact thermique avec le tube d'agent frigorifique (9), et un dispositif de chauffage (1) tubulaire destiné à dégivrer l'évaporateur (8), lequel dispositif de chauffage est disposé au moins par sections (2) en étant en contact avec les lamelles (16), l'évaporateur (8) étant entouré par le boîtier avec une ouverture d'entrée et une ouverture de sortie (28 ; 29), lesquelles déterminent un sens du flux d'air à travers l'évaporateur (8), caractérisé en ce qu'au moins une section (2) du dispositif de chauffage (1), laquelle s'étend dans un espace intermédiaire (31) entre deux lamelles adjacentes (16), est orientée dans le sens du flux de l'air, touche les deux lamelles (16) délimitant l'espace intermédiaire (31) et s'étend au moins en plus grande partie le long d'un bord de l'espace intermédiaire (31).
  2. Sous-groupe d'évaporateur selon la revendication 1, caractérisé en ce que le dispositif de chauffage (1) est fixé par sections sur une plaque de support (5) et en ce que les sections (2) du dispositif de chauffage (1) s'étendant dans un espace intermédiaire (31) entre deux lamelles adjacentes (16) sont coulissantes sur la plaque de support (5).
  3. Sous-groupe d'évaporateur selon la revendication 2, caractérisé en ce que le dispositif de chauffage (1) présente des sections arquées (3) qui relient entre elles des sections (2) s'étendant dans un espace intermédiaire (31) entre deux lamelles adjacentes (16) et qui sont fixées sur la plaque de support (5).
  4. Sous-groupe d'évaporateur selon la revendication 2 ou 3, caractérisé en ce que le dispositif de chauffage (1) est maintenu sur la plaque de support (5) par l'intermédiaire de doigts (7) découpés de la plaque de support (5).
  5. Sous-groupe d'évaporateur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la section (2) présente au moins une zone exposée (4) qui dépasse dans l'espace intermédiaire (31) à partir du bord.
  6. Sous-groupe d'évaporateur selon l'une quelconque des revendications précédentes, caractérisé en ce que le tube d'agent frigorifique (9) est disposé en croisant les lamelles (16).
  7. Sous-groupe d'évaporateur selon la revendication 6, dans la mesure où il est fait renvoi à la revendication 5, caractérisé en ce que la zone exposée (4) a prise entre deux sections de tube (12) du tube d'agent frigorifique (9) s'acheminant l'une à côté de l'autre.
  8. Sous-groupe d'évaporateur selon la revendication 7, caractérisé en ce que la zone exposée (4) touche les sections de tube (12) s'acheminant l'une à côté de l'autre.
  9. Sous-groupe d'évaporateur selon la revendication 7 ou 8, caractérisé en ce que les deux sections de tube (12) s'acheminant l'une à côté de l'autre sont situées dans un même plan (11) adjacent au bord de l'espace intermédiaire (31) et sont reliées entre elles en série par l'intermédiaire d'une troisième section de tube (14), laquelle est plus éloignée du bord de l'espace intermédiaire (31) que le plan (11).
  10. Sous-groupe d'évaporateur selon la revendication 9, caractérisé en ce qu'une pointe (21) de la zone exposée (4) touche la troisième section de tube (14).
EP12714634.8A 2011-04-06 2012-04-02 Module d'evaporateur pour un refrigerateur Active EP2694895B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110006862 DE102011006862A1 (de) 2011-04-06 2011-04-06 Verdampferbaugruppe für ein Kältegerät
PCT/EP2012/055948 WO2012136618A1 (fr) 2011-04-06 2012-04-02 Groupe d'évaporation pour un appareil de froid

Publications (2)

Publication Number Publication Date
EP2694895A1 EP2694895A1 (fr) 2014-02-12
EP2694895B1 true EP2694895B1 (fr) 2017-01-04

Family

ID=45974289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12714634.8A Active EP2694895B1 (fr) 2011-04-06 2012-04-02 Module d'evaporateur pour un refrigerateur

Country Status (6)

Country Link
EP (1) EP2694895B1 (fr)
CN (1) CN103459952B (fr)
DE (1) DE102011006862A1 (fr)
PL (1) PL2694895T3 (fr)
RU (1) RU2552085C1 (fr)
WO (1) WO2012136618A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104896840B (zh) * 2015-04-30 2017-07-11 惠而浦（中国）股份有限公司 一种自动除霜的直冷冰箱
CN105157324A (zh) * 2015-09-30 2015-12-16 合肥华凌股份有限公司 除霜装置及具有其的冰箱
EP3665426A1 (fr) 2017-08-09 2020-06-17 Arçelik Anonim Sirketi Appareil frigorifique avec système de dégivrage amélioré ayant un dispositif de chauffage à double tuyau
HUE065403T2 (hu) * 2021-06-08 2024-05-28 Hauser Gmbh Hõcserélõ hûtõszekrényhez

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5388427A (en) * 1992-09-23 1995-02-14 Samsung Electronics Co., Ltd. Refrigerator with kimchi compartment
RU2188992C2 (ru) * 2000-11-01 2002-09-10 Маханьков Юрий Егорович Испаритель охлаждающего устройства
TR200402804T2 (tr) * 2002-05-29 2005-04-21 Arçeli̇k A.Ş. Bir evaporatör üretim yöntemi
JP2005134030A (ja) * 2003-10-30 2005-05-26 Matsushita Electric Ind Co Ltd 冷蔵庫
DE202005014373U1 (de) 2005-09-12 2006-01-05 BSH Bosch und Siemens Hausgeräte GmbH No-Frost-Kältegerät
ITVE20050033U1 (it) * 2005-10-20 2007-04-21 I R C A S P A Ind Resistenze Evaporatore a lamelle per impianti refrigeranti provvisto di dispositivo per effettuare lo sbrinamento.
US9874403B2 (en) * 2009-02-27 2018-01-23 Electrolux Home Products, Inc. Evaporator fins in contact with end bracket

Also Published As

Publication number Publication date
RU2552085C1 (ru) 2015-06-10
PL2694895T3 (pl) 2017-03-31
WO2012136618A1 (fr) 2012-10-11
EP2694895A1 (fr) 2014-02-12
CN103459952A (zh) 2013-12-18
CN103459952B (zh) 2016-08-10
DE102011006862A1 (de) 2012-10-11
RU2013145294A (ru) 2015-05-20

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