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WO2016074893A1 - Appareil de réfrigération sans givre - Google Patents

Appareil de réfrigération sans givre Download PDF

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Publication number
WO2016074893A1
WO2016074893A1 PCT/EP2015/074428 EP2015074428W WO2016074893A1 WO 2016074893 A1 WO2016074893 A1 WO 2016074893A1 EP 2015074428 W EP2015074428 W EP 2015074428W WO 2016074893 A1 WO2016074893 A1 WO 2016074893A1
Authority
WO
WIPO (PCT)
Prior art keywords
condensation
evaporator
refrigerating appliance
appliance according
chamber
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.)
Ceased
Application number
PCT/EP2015/074428
Other languages
German (de)
English (en)
Inventor
Jochen HÄRLEN
Birtan Sert
Simon Buck
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 WO2016074893A1 publication Critical patent/WO2016074893A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F25D21/04—Preventing the formation of frost or condensate
    • 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
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • 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
    • F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/146—Collecting condense or defrost water; Removing condense or defrost water characterised by the pipes or pipe connections

Definitions

  • the present invention relates to a refrigeration appliance, in particular a domestic refrigeration appliance, with a storage chamber for refrigerated goods, an evaporator chamber separate from the storage chamber and a fan for driving air exchange between the storage chamber and the evaporator chamber, also commonly referred to as NoFrost refrigeration appliance.
  • the exchange of air between the storage chamber and the evaporator chamber means that moisture that enters the storage chamber with the refrigerated goods or through air exchange with the environment when the door opens, settles on the evaporator.
  • the evaporator In order to ensure efficient operation of the refrigeration device, the evaporator must be defrosted from time to time and the thereby released condensation water must be removed from the evaporator chamber. Via a condensation water drain, which leads from the evaporator chamber into the open, even warmer ambient air with high moisture content can get into the evaporator chamber, especially if after closing the door of the refrigerator, the air in the storage chamber cools and thereby a negative pressure in storage and Evaporator chamber is created.
  • a known way to prevent an influx of ambient air to the evaporator chamber via the condensation water drain is to block it with a siphon.
  • a siphon only works if enough liquid water is present in the condensation water drain to fill it.
  • the siphon is generally still empty and thus ineffective.
  • the pressure difference between Evaporator chamber and environment that he can maintain limited It may therefore, especially if the door is well sealed in a conventional manner, the pressure difference between the evaporator chamber and the surrounding area become so large that it exceeds the blocking capacity of the siphon and despite the water filling ambient air enters the evaporator chamber.
  • the object of the invention is to provide a NoFrost refrigeration device in which eliminates the risk of blockage of the fan due to icing or at least significantly reduced.
  • the object is achieved by providing in a refrigerator, in particular a household refrigeration appliance, with a storage chamber, an evaporator chamber, a fan for driving air exchange between the storage chamber and the evaporator chamber and a condensation water discharge, which leads from the evaporator chamber into the open, in a transition region between the Evaporator chamber and the condensation water discharge a condensation body is arranged to dehumidify through the condensation water outside air flowing.
  • the moisture that is trapped in this way by the condensation body can no longer be reflected on the fan, so that accordingly the risk of blocking the fan is reduced.
  • the condensation body should be good heat conducting, especially metallic.
  • the condensation body may have closed surfaces along which the incoming outside air can sweep along to release its moisture. Particularly effective dehumidification is possible if the condensation body is permeable to air, i. Has cavities or openings through which outside air can flow.
  • the condensation water drain generally comprises a pipeline, with which the condensation water from the evaporator chamber off and is passed through a thermal barrier coating of the refrigerator through the outside.
  • a longitudinal axis of this pipeline crosses the condensation body, so that when it flows along the longitudinal axis of outside air is fully hit by this and gives off moisture before it can be distributed in the evaporator chamber and mix with the existing cold air.
  • a dimension of the condensation body may be larger across the pipe than the corresponding dimension of the pipe.
  • only part of the condensation body is flushed or flushed by the incoming outside air, so that the major part of the moisture is deposited in this area of the condensation body.
  • the parts of the condensation body which are not directly exposed to the outside air flow, can serve as a heat exchanger to dissipate the liberated in the condensation of moisture latent heat.
  • the condensing body must be defrosted from time to time and should be connected to a defrost heater.
  • a metallic body, by which the condensation body is thermally conductively connected to the evaporator, on the one hand can provide for a rapid dissipation of the latent heat of the condensing water and thus for an effective even over a longer period of time dehumidification of the incoming outside air; but it can also heat, which is released by a defrost heater of the evaporator, the condensation body, so that the defrost heater of the evaporator can also serve as a defrost heater of the condensation body.
  • a metallic body is in particular a bottom plate of the evaporator chamber into consideration.
  • Such a bottom plate may have a hole, with the edges of the condensation body is connected.
  • the connection may be a good heat conducting clamp or solder connection; but it is also conceivable to form the condensation body in one piece with the bottom plate. It may be expedient that the condensation body is mounted at a distance from a surface of the evaporator chamber leading to thawing of the evaporator, so that condensate arising from the evaporator does not catch on the condensation body and freezes again at the end of a defrost cycle.
  • a widening can be formed, in which the Kondensationskorper engages.
  • the expansion provides sufficient space for the incoming air to pass or pass through the condensing body at low velocity, thereby releasing moisture while preventing the ambient air from spreading in the evaporator chamber prior to dehumidifying.
  • FIG. 1 shows a schematic partial section through a refrigeration device according to a first
  • FIGS. 2 to 6 are partial sections analogous to FIG. 1 according to further embodiments of FIGS.
  • Fig. 1 shows a partial section in the depth direction through the body of a household refrigerator according to the invention.
  • a surrounded by a thermal insulation layer 1 of foam inner container 2 surrounds in a conventional manner in the body of the refrigerator a cavity which is divided by an inserted therein intermediate wall 3 in an evaporator chamber 4 and a storage chamber 5.
  • the vaporizer chamber 4 contains a vane evaporator 6 with lamellae arranged in parallel between the planes and a fan 7. Through openings of the intermediate wall 3, through which air from the storage chamber 5, sucked by the fan 7, enters the vaporizer chamber 4 and is sucked through the vane evaporator 6 , are located on a door near edge of the intermediate wall 3, left of in the Figure shown detail. In this region, not shown, of the evaporator chamber 4, a supply air channel can also open from a further storage chamber of the refrigerator.
  • a distributor channel closes, via which the air cooled in the evaporator 6 flows back to the storage chamber 5 or optionally to a side storage chamber (not shown).
  • the lower edges of the fins of the evaporator 6 are in contact with a bottom plate 8, for example made of aluminum sheet, which is heated by a foil heater 9 for defrosting the evaporator 6.
  • Defrost water released during defrosting of the evaporator 6 flows on the bottom plate 8 and the intermediate wall 3, which slopes down to the rear wall of the refrigeration appliance body, under the fan 7 up to an opening 10 at the lowest point of the intermediate wall 3 and from there via a condensation water outlet 11 to an unillustrated evaporator outside the foam layer 1.
  • the condensation water drain 1 1 is formed here by a hose or a pipe 31 which is attached to a nozzle 12 of the intermediate wall 3.
  • the condensation water drain 1 1 is isolated over its entire length from the storage chamber 5 through the thermal barrier coating 1; it may extend within the heat-insulating layer 1 in a rear wall of the body or on at least part of its length beyond the rear wall.
  • a condensation body 13 is formed here by two intersecting, thin-walled aluminum sheets 14, 15 which form a 10 engaging in the opening 10 tip and projecting in the extension of a longitudinal axis 17 of the condensation water outlet 1 1 above the opening 10, so that when ambient air over the Thaw water drain 1 1 penetrates into the evaporator chamber 4, it sweeps along the surfaces of the sheets 14, 15 while moisture on the sheets 14, 15 separates.
  • one of the sheets 14, 14 may be curved in an upper area to direct the incoming ambient air away from the fan 7.
  • the other plate 15 is thus hardly exposed to the influx of ambient air in its upper region; by discharging the latent heat received at different points of the condensation body 13 during the condensation to the air of the storage chamber, carries the Upper area of the plate 15 for effective condensation, although at least himself precipitates in himself a small amount of moisture.
  • the tip 16 may be frictionally inserted into the opening 10 to fix the condensation body 13. Laterally over the edges of the opening 10 protruding portions of the plates 14, 15 limit the insertion depth.
  • Fig. 2 shows a modification of the construction of Fig. 1, in which the condensation water outlet 1 1 at its upper end, in the amount of the nozzle 12, is widened.
  • the expansion 18 allows a long dwell time of the incoming ambient air and a correspondingly thorough dehumidification in contact with the sheets 14, 15; At the same time, the widening 18 initially prevents a mixing of the ambient air with that of the evaporator chamber 4.
  • Fig. 3 shows a modification in which the condensation body 13 is formed by a piece of non-woven fabric 19 of metal chips or fine wires.
  • the condensation body 13 may be formed by a lump of swirl chips.
  • a channel 20 is formed, at the bottom of the condensation water without contact with the web 19, the both sides of the Rinne 20 rests on the intermediate wall 3, can drain to the condensation water 1 1.
  • the bottom plate 8 is extended to below the condensation body 13 so that condensation from the evaporator on the Bottom plate 8 flows to an opening 22 therein, followed by the condensation water outlet 1 1 connects.
  • an intermediate wall 23 here divides the evaporator chamber 4 into a suction region 24 in front of the fan 7, to which the evaporator 6 belongs, and a pressure region 25 beyond the fan 7, from which connect the distribution lines leading to the storage chambers.
  • the condensation body 13 may also be a nonwoven 19, which is fixed by clamping between the bottom plate 8 and the intermediate wall 23.
  • a widening 18 at the upper end of the condensation water drain 1 1, under the bottom plate 8, provided, and the opening 22 in the bottom plate 8 is increased according to the dimensions of this expansion 18.
  • a wire mesh or mesh 26 which is attached in this embodiment as a condensation body 13 to the opening 22 at low speed and its moisture correspondingly efficiently deposited.
  • a baffle plate 27 crossing the longitudinal axis 17 of the condensation water drain 11 may be provided.
  • a plurality of layers of the wire mesh 26 may be arranged one above the other.
  • the attachment of the wire mesh 26 to the bottom plate 8 by clamping, soldering or the like ensures efficient heat transfer, both in dissipating the latent heat of precipitated moisture from the wire mesh 26 to the bottom plate 8 as well as in the opposite direction during defrosting with the aid of the film heater.
  • the film heater 9 extends in the illustration of FIG. 5 only under the finned evaporator 6. If it proves necessary for a secure defrosting of the condensation body 13, but it can also be mounted around the opening 22 around.
  • the wire mesh 26 is replaced by a multiplicity of openings 28 punched into the base plate 8 via the condensation water outlet 11. From the openings 28 punched out material of the bottom plate 8 can be removed so that between them standing webs 30 of the bottom plate 8 serve as a condensation body 13; in the case shown here, the openings 28 are elongate, and when cut out tongues 29 are cut out of the plane of the bottom plate 8 upwards or downwards to be available as an additional surface of the condensation body 13.
  • the film heater 9 could here, if necessary, be mounted continuously from the evaporator 6 to the webs 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Removal Of Water From Condensation And Defrosting (AREA)

Abstract

L'invention concerne un appareil de réfrigération, notamment un réfrigérateur domestique, qui comprend un compartiment de stockage (5), un compartiment d'évaporation (4), un ventilateur (7) destiné à générer un échange d'air entre le compartiment de stockage (5) et le compartiment d'évaporation (4) et une évacuation de l'eau de dégivrage (11) qui relie le compartiment d'évaporation (4) à l'extérieur. Un élément de condensation (13) est disposé dans une zone de transition entre le compartiment d'évaporation (4) et l'évacuation d'eau de dégivrage (11) de manière à déshumidifier air extérieur amené par l'évacuation d'eau de dégivrage (11).
PCT/EP2015/074428 2014-11-10 2015-10-22 Appareil de réfrigération sans givre Ceased WO2016074893A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014222850.6 2014-11-10
DE102014222850.6A DE102014222850A1 (de) 2014-11-10 2014-11-10 NoFrost-Kältegerät

Publications (1)

Publication Number Publication Date
WO2016074893A1 true WO2016074893A1 (fr) 2016-05-19

Family

ID=54337774

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/074428 Ceased WO2016074893A1 (fr) 2014-11-10 2015-10-22 Appareil de réfrigération sans givre

Country Status (2)

Country Link
DE (1) DE102014222850A1 (fr)
WO (1) WO2016074893A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170314840A1 (en) * 2014-11-10 2017-11-02 Bsh Bausgeraete Gmbh No-Frost Refrigeration Device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109425168B (zh) * 2017-09-04 2022-02-11 博西华电器（江苏）有限公司 制冷器具及其控制方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485115A (en) * 1946-07-19 1949-10-18 Gen Motors Corp Refrigerating apparatus having condensate collecting means
US2912834A (en) * 1957-01-08 1959-11-17 Gen Motors Corp Refrigerating apparatus
JPS4959156U (fr) * 1972-09-01 1974-05-24
JPS5150462U (fr) * 1974-10-15 1976-04-16
JPS5480077U (fr) * 1977-11-17 1979-06-06
JPS56161282U (fr) * 1980-04-25 1981-12-01
JP2902952B2 (ja) * 1994-09-28 1999-06-07 三洋電機株式会社 高湿度低温貯蔵庫
DE102009026667A1 (de) * 2009-06-03 2010-12-09 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit druckausgleichendem Durchgang

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485115A (en) * 1946-07-19 1949-10-18 Gen Motors Corp Refrigerating apparatus having condensate collecting means
US2912834A (en) * 1957-01-08 1959-11-17 Gen Motors Corp Refrigerating apparatus
JPS4959156U (fr) * 1972-09-01 1974-05-24
JPS5150462U (fr) * 1974-10-15 1976-04-16
JPS5480077U (fr) * 1977-11-17 1979-06-06
JPS56161282U (fr) * 1980-04-25 1981-12-01
JP2902952B2 (ja) * 1994-09-28 1999-06-07 三洋電機株式会社 高湿度低温貯蔵庫
DE102009026667A1 (de) * 2009-06-03 2010-12-09 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit druckausgleichendem Durchgang

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170314840A1 (en) * 2014-11-10 2017-11-02 Bsh Bausgeraete Gmbh No-Frost Refrigeration Device
US10371434B2 (en) * 2014-11-10 2019-08-06 Bsh Hausgeraete Gmbh No-frost refrigeration device

Also Published As

Publication number Publication date
DE102014222850A1 (de) 2016-05-12

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