EP3023726A1 - Appareil frigorifique comprenant un évaporateur à ventilation forcée - Google Patents

Appareil frigorifique comprenant un évaporateur à ventilation forcée Download PDF

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Publication number
EP3023726A1
EP3023726A1 EP15195066.4A EP15195066A EP3023726A1 EP 3023726 A1 EP3023726 A1 EP 3023726A1 EP 15195066 A EP15195066 A EP 15195066A EP 3023726 A1 EP3023726 A1 EP 3023726A1
Authority
EP
European Patent Office
Prior art keywords
evaporator
refrigerating appliance
appliance according
chamber
webs
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.)
Withdrawn
Application number
EP15195066.4A
Other languages
German (de)
English (en)
Inventor
Uli Lindenmayer
Adolf Feinauer
Felix Wiedenmann
Simon Schechinger
Hans Ihle
Reinhard Mehner
Christian Spiegel
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 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 Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP3023726A1 publication Critical patent/EP3023726A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • F25D2201/00—Insulation
    • F25D2201/30—Insulation with respect to sound
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/0071—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/28—Safety or protection arrangements; Arrangements for preventing malfunction for preventing noise

Definitions

  • the present invention relates to a refrigeration device having an evaporator arranged in an evaporator chamber and forcedly ventilated for cooling one or more storage chambers of the refrigeration device.
  • the evaporator is exposed during operation to temperature fluctuations that cause it to shrink and expand again. This can lead to jerky movements that are audible as clicks outside the refrigerator. To combat such noises, it is known to make walls of the evaporator chamber at least partially of expanded polystyrene. This material is able to yield to a limited extent, temperature-related changes in size of the evaporator, so that the jerky movements occur less frequently; Moreover, it has a sound-absorbing effect.
  • the expanded polystyrene requires a non-negligible wall thickness that deviates from the usable volume of the refrigeration appliance.
  • Object of the present invention is to provide a refrigeration device that allows a good suppression of cracking noises of the evaporator in a reduced footprint.
  • an elastically deformable compensation layer rests on a top edge of the evaporator and extends over two opposite main sides of the evaporator in a refrigeration device with an arranged in an evaporator chamber, forced-ventilated evaporator.
  • the leveling layer By separating the main sides of the evaporator from these opposing walls of the evaporator chamber, the leveling layer impedes the formation of ice bridges between the walls and the evaporator, which at Temperature fluctuations could break and thereby generate noise.
  • the leveling layer itself can yield the thermal expansion and shrinkage movements of the evaporator by shearing deformation continuously and noiselessly.
  • the leveling layer should cover the main sides of the evaporator over its entire extent.
  • the balance layer may be clamped between the main sides of the evaporator and the opposite walls of the evaporator chamber. But even if between the leveling layer on the one hand and the evaporator or the wall of the evaporator chamber on the other hand, a gap should be present and this should be filled with ice, this ice would be largely relieved by the compensation layer of shear stress, so that no cracking noises are generated.
  • a thickness of the leveling layer of up to 2 mm is sufficient. Due to the resilience of the material of the compensating layer, a thickness of at least 0.5 millimeters is preferred in order to ensure good handling of the compensating layer during assembly of the refrigerating device.
  • evaporator comes in a refrigerator with remote from the storage chamber (or the storage chambers) evaporator chamber in particular a fin evaporator into consideration, with fins of the evaporator extending from one main side of the evaporator to the other.
  • the leveling layer must not completely cover the top of the evaporator so as not to block the flow of air.
  • the leveling layer preferably comprises two mats extending over the main sides and the webs connecting webs resting on an upper side of the evaporator, between which space remains for the passage of the air stream.
  • the webs and the two mats can be cut in one piece from the same flat material.
  • the number of webs should be at least three.
  • the webs should be as narrow as possible, so as not to affect the air circulation through the evaporator unnecessarily; Nevertheless, for a stable fit of the compensation layer, the width of the webs should be greater than the distance between two adjacent fins of the evaporator, so that each web rests stable on at least one blade and does not tend to slip into a space between two fins.
  • the compensation layer can still be retrofitted if necessary in a finished refrigeration device.
  • the evaporator When the evaporator is pivotally connected to a wall of the evaporator chamber opposite the dividing wall, e.g. via flexible Kälteschzu- and -ableitepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptepteptept
  • the leveling layer may consist of a foam which should be closed-celled to prevent it from absorbing condensation water when defrosting the evaporator.
  • foamed plastic films of PE or PP are used in the packaging industry and are available at low cost.
  • Fig. 1 shows a schematic section through an evaporator chamber 1, an evaporator 8 and its surroundings in a household refrigerator.
  • the vertically elongated evaporator chamber 1 is housed in the body of the household refrigerator adjacent to a rear wall of the body, so that a part of the rear wall also acts as a wall 2 of the evaporator chamber 1.
  • the body includes here in the usual way a thermoformed thermoformed inner container 4, a solid outer skin and a heat-insulating foam layer 3, which fills a gap between the inner container and outer skin. In each case a part of the inner container 4 and the foam layer 3 are in the Fig. 1 to see.
  • a second wall 5, which delimits the evaporator chamber 1 to the front, is characterized by a rigid, e.g. formed from unfoamed polystyrene one-piece injection-molded shell.
  • a fan 6 is mounted to suck cold air from the evaporator chamber 1 and they via a pressure chamber 7 on the other side of the wall 5 on a storage chamber 9 of the refrigerator, which in turn separated by an intermediate wall 10 of the pressure chamber 7 is, and distribute any further storage chambers of the refrigerator.
  • evaporator chamber 1 of the substantially cuboid evaporator 8 is housed.
  • This is a known finned evaporator with a plurality of each other and the cutting plane of the Fig. 1 parallel lamellae connected by a refrigerant pipe 11 crossing them.
  • the fan 6 sucks air from top to bottom through the evaporator 8, i. the upper side of the evaporator 8 forms an inflow side 13, via which air extracted from the storage chamber 9 or the storage chambers enters the evaporator 8, and the underside facing the ventilator 6 forms an outflow side 12 of the evaporator 8.
  • a mat 17 or 18 of a limp but resilient under shear elastic material such as PE foam or silicone, clamped.
  • the mats 17, 18 are each subjected to shear, provided that the shear forces occurring but are not large enough to overcome the adhesive resistance on one side of the mat 17 and 18, it comes no abrupt slippage between the mats 17, 18 and the evaporator 8 and the walls 2, 5, so that no cracking noises occur.
  • the hardness of the material of the mats 17, 18 can be chosen low, or their strength can be increased.
  • a thickness of the mats 17, 18 between 0.5 and 2mm proves to be suitable to use on the one hand a material that has the required compliance in operation, and on the other hand for easy handling of the mats 17, 18 at Installation to achieve sufficient strength.
  • the mats 17, 18 are integrally connected by webs 19, which extend over the inflow side 13 of the evaporator 8, to a compensation layer 20.
  • the leveling layer 20 can be cut with minimal effort from flat material.
  • Like the perspective view of the leveling layer 20 in FIG Fig. 2 shows allow extensive openings 21 between the webs 19 a substantially unhindered access of air to the upstream side 13 of the evaporator 8.
  • the leveling layer 20 can be hung during assembly of the refrigerator on the evaporator 8 and installed together with this in the body of the refrigerator.
  • the webs 19 are each wider than the distance between two adjacent lamellae 10, can be prevented from slipping into a gap between two fins 10, so that the mats 17, 18 on the main sides 15,16 of the evaporator 8 flat and wrinkle-free hang.
  • the compensation layer 20 can also be easily retrofitted in a finished refrigerator, as based on Fig. 2 should be illustrated.
  • Fig. 2 1 illustrates the attachment of the compensation layer 20 on the basis of an exploded view of the compensation layer 20, the evaporator 8 and the wall 5.
  • a left flank of the evaporator 8 On a left flank of the evaporator 8 can be seen two projecting pipe bends 22, which are part of the refrigerant pipe 11 of the evaporator 8. A projection 23 of the wall 5 is provided to assist in the assembled state, the upper of the two pipe bends 22.
  • a refrigerant inlet 25 and an outlet 26 are shown offset in height relative to one another; one of these may be supported in a manner analogous to the upper pipe bend 11 on a projection 24 of the intermediate wall 20.
  • Refrigerant inlet and outlet 25, 26 extend in the mounted state through the opposite side of the main side 15 of the evaporator 8, not shown in Fig. 4 wall 2 of the evaporator chamber 1 and are soldered within the foam layer 3 with other lines.
  • the walls 10, 5 are first removed so that the evaporator 8 is exposed from the side of the storage chamber 9.
  • the evaporator 8 can now be spread apart from the inner container rear wall 19 with slight elastic deflection of the inlet and outlet 25, 26, so that a gap is created between the two which is wide enough to allow the mat 17 from above or from the side the pipe bends 11 ago push in.
  • the projections 23, 24, in particular at their the pipe bend 22 or the refrigerant inlet 25 supporting upper sides, are glued with a piece of the leveling layer to here also the formation of an ice bridge between the evaporator 8 and wall 5 to prevent.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
EP15195066.4A 2014-11-19 2015-11-18 Appareil frigorifique comprenant un évaporateur à ventilation forcée Withdrawn EP3023726A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014223571.5A DE102014223571A1 (de) 2014-11-19 2014-11-19 Kältegerät mit zwangsdurchlüftetem Verdampfer

Publications (1)

Publication Number Publication Date
EP3023726A1 true EP3023726A1 (fr) 2016-05-25

Family

ID=54548094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15195066.4A Withdrawn EP3023726A1 (fr) 2014-11-19 2015-11-18 Appareil frigorifique comprenant un évaporateur à ventilation forcée

Country Status (2)

Country Link
EP (1) EP3023726A1 (fr)
DE (1) DE102014223571A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017212423A1 (de) 2017-07-20 2019-01-24 BSH Hausgeräte GmbH Kältegerät mit umströmten Verdampfer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5558156A (en) * 1994-01-21 1996-09-24 Honda Giken Kogyo Kabushiki Heat exchanger
JP2000292077A (ja) * 1999-02-03 2000-10-20 Nippon Soken Inc 熱交換器
US20120067554A1 (en) * 2010-09-17 2012-03-22 Cooler Master Co., Ltd. Snap-in fan seat and heat sink having the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5558156A (en) * 1994-01-21 1996-09-24 Honda Giken Kogyo Kabushiki Heat exchanger
JP2000292077A (ja) * 1999-02-03 2000-10-20 Nippon Soken Inc 熱交換器
US20120067554A1 (en) * 2010-09-17 2012-03-22 Cooler Master Co., Ltd. Snap-in fan seat and heat sink having the same

Also Published As

Publication number Publication date
DE102014223571A1 (de) 2016-05-19

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