EP2694895A1 - Evaporator assembly for a refrigeration appliance - Google Patents
Evaporator assembly for a refrigeration applianceInfo
- 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
Links
- 238000005057 refrigeration Methods 0.000 title abstract description 5
- 239000003507 refrigerant Substances 0.000 claims abstract description 16
- 238000010257 thawing Methods 0.000 claims abstract description 9
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000013529 heat transfer fluid Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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
Landscapes
- 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)
- Defrosting Systems (AREA)
- Air-Conditioning For Vehicles (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110006862 DE102011006862A1 (en) | 2011-04-06 | 2011-04-06 | Evaporator assembly for a refrigeration device |
PCT/EP2012/055948 WO2012136618A1 (en) | 2011-04-06 | 2012-04-02 | Evaporator assembly for a refrigeration appliance |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2694895A1 true EP2694895A1 (en) | 2014-02-12 |
EP2694895B1 EP2694895B1 (en) | 2017-01-04 |
Family
ID=45974289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12714634.8A Active EP2694895B1 (en) | 2011-04-06 | 2012-04-02 | Evaporator assembly for a cooling device |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2694895B1 (en) |
CN (1) | CN103459952B (en) |
DE (1) | DE102011006862A1 (en) |
PL (1) | PL2694895T3 (en) |
RU (1) | RU2552085C1 (en) |
WO (1) | WO2012136618A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104896840B (en) * | 2015-04-30 | 2017-07-11 | 惠而浦(中国)股份有限公司 | A kind of direct cooling refrigerator of automatic defrosting |
CN105157324A (en) * | 2015-09-30 | 2015-12-16 | 合肥华凌股份有限公司 | Defrosting device and refrigerator provided with same |
EP3665426A1 (en) | 2017-08-09 | 2020-06-17 | Arçelik Anonim Sirketi | Refrigeration appliance with improved defrosting system having double pipe heater |
EP4102154B1 (en) * | 2021-06-08 | 2024-01-17 | Hauser GmbH | Heat exchanger for a refrigerated cabinet |
Family Cites Families (7)
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 (en) * | 2000-11-01 | 2002-09-10 | Маханьков Юрий Егорович | Cooling device evaporator |
WO2003099487A1 (en) * | 2002-05-29 | 2003-12-04 | Arçelik A.S. | A method for manufacturing an evaporator |
JP2005134030A (en) * | 2003-10-30 | 2005-05-26 | Matsushita Electric Ind Co Ltd | Refrigerator |
DE202005014373U1 (en) | 2005-09-12 | 2006-01-05 | BSH Bosch und Siemens Hausgeräte GmbH | No-frost refrigerating appliance |
ITVE20050033U1 (en) * | 2005-10-20 | 2007-04-21 | I R C A S P A Ind Resistenze | SHEET EVAPORATOR FOR REFRIGERANT SYSTEMS PROVIDED WITH A DEVICE FOR DEFROSTING. |
US9874403B2 (en) * | 2009-02-27 | 2018-01-23 | Electrolux Home Products, Inc. | Evaporator fins in contact with end bracket |
-
2011
- 2011-04-06 DE DE201110006862 patent/DE102011006862A1/en not_active Withdrawn
-
2012
- 2012-04-02 RU RU2013145294/13A patent/RU2552085C1/en active
- 2012-04-02 EP EP12714634.8A patent/EP2694895B1/en active Active
- 2012-04-02 PL PL12714634T patent/PL2694895T3/en unknown
- 2012-04-02 CN CN201280016499.4A patent/CN103459952B/en not_active Expired - Fee Related
- 2012-04-02 WO PCT/EP2012/055948 patent/WO2012136618A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2012136618A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102011006862A1 (en) | 2012-10-11 |
PL2694895T3 (en) | 2017-03-31 |
RU2552085C1 (en) | 2015-06-10 |
EP2694895B1 (en) | 2017-01-04 |
CN103459952A (en) | 2013-12-18 |
CN103459952B (en) | 2016-08-10 |
WO2012136618A1 (en) | 2012-10-11 |
RU2013145294A (en) | 2015-05-20 |
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Inventor name: MALISI, MICHAELA Inventor name: PRADEL, RENATE Inventor name: WEHLAUCH, MARCUS |
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