EP2694895A1 - Groupe d'évaporation pour un appareil de froid - Google Patents

Groupe d'évaporation pour un appareil de froid

Info

Publication number
EP2694895A1
EP2694895A1 EP12714634.8A EP12714634A EP2694895A1 EP 2694895 A1 EP2694895 A1 EP 2694895A1 EP 12714634 A EP12714634 A EP 12714634A EP 2694895 A1 EP2694895 A1 EP 2694895A1
Authority
EP
European Patent Office
Prior art keywords
evaporator
heater
assembly according
evaporator assembly
sections
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
EP12714634.8A
Other languages
German (de)
English (en)
Other versions
EP2694895B1 (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
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 EP2694895A1 publication Critical patent/EP2694895A1/fr
Application granted granted Critical
Publication of EP2694895B1 publication Critical patent/EP2694895B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 appliance, 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. This is reflected
  • a no-frost refrigerator in which an evaporator with an evaporator chamber with a refrigerant pipe and a plurality of thermal contact with the refrigerant pipe fins and on the other housed a heater for defrosting the evaporator is.
  • 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.
  • 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.
  • a particularly effective heat transfer from the heater to the fins is possible over a portion of the heater which extends in a space between two adjacent fins.
  • this portion of the heater both touches a same gap limiting slats.
  • a heating section can largely block the convection in the intermediate space, the efficient heat transfer due to the direct contact of the heating with the slats weighs this disadvantage.
  • Evaporator assembly as little as possible to hinder, it is preferred that the portion of the heater at least for the greater part along an edge of the
  • Interspace extends. Such a portion of the heater contacting the fins preferably extends in the direction of airflow circulating through a housing of the evaporator assembly from an inlet to an outlet port.
  • the heating is fixed in sections on a support plate and that in a
  • Interspace between two adjacent slats extending portions of the heater are slidable on the surface of the support plate to be at 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 between two adjacent running 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 between them
  • Pipe sections Preferably, 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 wider than the plane from the edge of the pipe
  • a tip of the issued area can touch the third pipe section to heat this directly.
  • Fig. 1 is a perspective view of a pipe heater for use in the
  • FIG. 2 shows the tube heater of FIG. 1 mounted on a carrier plate
  • Fig. 3 is a side view of the pipe heater and an evaporator before the
  • FIG. 4 shows the pipe heater and the evaporator after assembly
  • Fig. 5 is a perspective view of the evaporator and the pipe heater; and Fig. 6, the attachment of the evaporator assembly in a refrigerator.
  • 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 heater of Fig. 1, mounted on a support plate 5.
  • the support plate 5 is a substantially rectangular blank made of sheet metal, which by angled
  • Edge strip 6 is stiffened on 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.
  • the evaporator 8 comprises a refrigerant tube 9 which, coming from an inlet connection 10, enters the evaporator 8 at its front end facing the viewer and There, first in a first, the heater 1 near adjacent plane 1 1 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 plane parallel to the plane 1 1, further than this of 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 further, in the view of FIG. 3 hidden from her slats are attached to the pipe sections 12, 14 at a uniform spacing, for example by soldering.
  • Pipe section 14 connected to another pipe section 12 of the level 1 1. It thus change along the refrigerant pipe in a 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, to meet a gap between two fins 16. Slight deviations between the distance of the pipe sections 2 and the distance of the fins 16 from each other are equal by an elastic displacement of the pipe sections 2 when placing the
  • 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 once again illustrates the structure of the evaporator assembly in a perspective view, wherein a majority of the laminations 16 of the evaporator 8 are only partially shown in each case in order to make the exposed regions 4 of the heater 1 visible. In fact, all lamellae 16 extend over the entire width of the evaporator block 8, as shown in FIG. 5 only for the respective end faces.
  • Gaps 31 between adjacent slats 16 each have a the
  • Diameter of the pipe sections 2 corresponding width, and between two
  • Gaps 31 that receive a pipe section 2 there is one or more spaces 31 that do not contain a pipe section 2.
  • the evaporator assembly of Figure 5 is well suited for use in a no-frost refrigerator in which an evaporator chamber accommodating the evaporator assembly is e.g. housed in a conventional manner flat under the ceiling of a carcass of the device or in a horizontal partition between two storage chamber.
  • Fig. 6 shows a schematic example of the attachment of the evaporator assembly in an evaporator chamber 24 between the storage chamber 25 and ceiling 26 of a
  • a fan 27 drives the air circulation between on and off
  • Bearing 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. Based on 6 is easily understood that when a pipe section 2, the space between two fins 16 down completely blocked, the issued area 4 condensation water in one of the issued area. 4

Abstract

Groupe d'évaporation pour un appareil de froid, notamment un appareil de froid ménager, comportant un évaporateur (8), qui comprend une conduite de fluide frigorigène (9) et une pluralité de lamelles (16) en contact thermique avec la conduite de fluide frigorigène (9), et un dispositif chauffant (1) tubulaire pour décongeler l'évaporateur (8), le dispositif chauffant (1) étant disposé au moins partiellement (2) en contact avec les lamelles (16).
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 true EP2694895A1 (fr) 2014-02-12
EP2694895B1 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
WO2019029801A1 (fr) 2017-08-09 2019-02-14 Arcelik Anonim Sirketi Appareil frigorifique avec système de dégivrage amélioré ayant un dispositif de chauffage à double tuyau
EP4102154B1 (fr) * 2021-06-08 2024-01-17 Hauser GmbH Échangeur de chaleur pour un meuble réfrigéré

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
WO2003099487A1 (fr) * 2002-05-29 2003-12-04 Arçelik A.S. Procede pour produire un evaporateur
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012136618A1 *

Also Published As

Publication number Publication date
RU2013145294A (ru) 2015-05-20
CN103459952B (zh) 2016-08-10
CN103459952A (zh) 2013-12-18
DE102011006862A1 (de) 2012-10-11
PL2694895T3 (pl) 2017-03-31
RU2552085C1 (ru) 2015-06-10
WO2012136618A1 (fr) 2012-10-11
EP2694895B1 (fr) 2017-01-04

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