EP2467655A2 - Appareil de froid à conduit d'écoulement d'eau de dégivrage obturé par un moyen d'obturation de conduit - Google Patents

Appareil de froid à conduit d'écoulement d'eau de dégivrage obturé par un moyen d'obturation de conduit

Info

Publication number
EP2467655A2
EP2467655A2 EP10742118A EP10742118A EP2467655A2 EP 2467655 A2 EP2467655 A2 EP 2467655A2 EP 10742118 A EP10742118 A EP 10742118A EP 10742118 A EP10742118 A EP 10742118A EP 2467655 A2 EP2467655 A2 EP 2467655A2
Authority
EP
European Patent Office
Prior art keywords
closure means
water
channel
channel closure
abtauwasserkanal
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
EP10742118A
Other languages
German (de)
English (en)
Other versions
EP2467655B1 (fr
Inventor
Irene Dumkow
Hans Ihle
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
Priority claimed from DE200910028775 external-priority patent/DE102009028775A1/de
Priority claimed from DE200920011510 external-priority patent/DE202009011510U1/de
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2467655A2 publication Critical patent/EP2467655A2/fr
Application granted granted Critical
Publication of EP2467655B1 publication Critical patent/EP2467655B1/fr
Not-in-force 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
    • F25D21/14—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

  • Refrigerating appliance with a through a channel closure means
  • the present invention relates to a refrigeration device, in particular a NoFrost refrigeration device, with a Abtauwasserkanal which is closed with a channel closure means.
  • the air is circulated by means of a circulating air system from an evaporator, which is arranged in particular outside the actual refrigerator, in the refrigerator. Ice forms on the evaporator, which is defrosted on a regular basis, the defrost water being formed via a defrost water channel, e.g. is discharged into an evaporation tray.
  • a siphon is integrated into the Abtauwasserkanal in the rule. This fills with defrost water and prevents further air exchange.
  • a disadvantage of the siphon solution is that until the time when the siphon is filled with water - ie z. B. until after the first defrost cycles - ambient air and - moisture flow through the Abtauwasserkanal in the refrigerator or to the evaporator and lead to contamination and energy loss. It has already been proposed in an earlier application of the applicant to integrate into the defrost water channel a water-soluble channel closure means which prevents an inflow of ambient air through the Abtauigankanal until it dissolves completely by the condensation water. Then the water siphon is filled with condensation and takes its function.
  • the object is achieved with a refrigerator according to claim 1, wherein the Abtauwasserkanal is closed by a channel closure means which is not or only partially water-soluble.
  • the channel sealant is held in or on the defrost water channel with water-soluble material.
  • the channel closure means need not be made of water-soluble material, it must only be ensured that the attachment of the channel closure means in the defrost water channel is dissolved in contact with water and the channel closure means releases the channel.
  • the channel closure means itself may consist of any materials such as plastic, styrofoam, rubber, glass or metal or composites thereof. It is preferably an at least substantially dimensionally stable material such. B. plastic. As a result, the closure is more reliable, since now the water-soluble medium is no longer itself exposed to ambient pressure fluctuations and mechanical stress during manufacture or transport. The main stresses are instead absorbed by the non-water soluble channel sealant.
  • a refrigeration device is in particular automatically defrostable and, for example, a refrigerator, a freezer or fridge-freezer or a freezer. Preferably, it is a household refrigerator.
  • a NoFrost refrigeration device in the context of the invention is a refrigeration device in which the evaporator outside the refrigerating compartment arranged in an evaporator compartment, and the cooling air is circulated via cooling air ducts using a fan between the evaporator compartment and cooling compartments.
  • the evaporator of such a refrigerator can be defrosted by a defrost heater.
  • the Abtauwasserkanal is for example a pipe, a hose or a channel and preferably opens into an evaporation tray, which is advantageously arranged over the compressor.
  • a siphon is preferably integrated in the Abtauwasserkanal, which fills with defrost water and then the entry of ambient air into the refrigerator or at NoFrost devices in the evaporator compartment prevented.
  • the channel closure means may in particular be fixed in or on the defrost water channel by water-soluble organic or inorganic materials which serve as adhesive. This comes, for example, Cellulose or gelatin in question, or a salt such as saline.
  • the adhesive is preferably applied over the entire circumference of the defrost water channel and thereby holds the channel closure means, which has a slightly smaller outer diameter than the inner diameter of the Abtauwasserkanals. It is also possible mechanical fasteners such. As clamps or retaining rings to use as a fastener, which consist of water-soluble material.
  • salt or cellulose could be used.
  • the channel closure means is formed from plastic. This allows cost-effective production, for example, as an injection molded part and a reliable closure of Abtauwasserkanals, since a stable channel closure is created, which withstands ambient pressure fluctuations, mechanical stresses during manufacture and during transport.
  • the outer diameter of the channel closure means is therefore preferably significantly smaller than the inner diameter of the Abtauwasser- channel, so that it can not tilt when loosening in a position transverse to the Abtauigankanal and this can continue to close, but instead aligns in the longitudinal direction of the Abtauwasserkanals.
  • the channel closure means may also be designed so that it is flushed out of the defrost water channel by the condensation water.
  • the channel closure means is formed as a plate or disc, in particular made of plastic. This is e.g. introduced into a tubular or tubular portion of Abtauwasserkanals.
  • the geometry of the disc is adapted to the cross section of the Abtauwasserkanals so that the Abtauwasserkanal is closed with him and with any water-soluble
  • Suitable examples are water-soluble adhesive or water-soluble terminals.
  • Such a disc is arranged, for example, transversely to the flow direction of the defrost water in Abtauwasserkanal and almost positively held in a portion of Abtauwasserkanals by being glued at its periphery sealingly against the channel inner wall. Upon dissolution of the adhesive, the disc tilts to a position parallel to the longitudinal direction, in which the cross section of the Abtauwasserkanals is released.
  • the thickness of the disk is preferably> 0.1 mm (it is not a film material), more preferably about 0.5-1.5 mm.
  • the channel closure means may be introduced at different positions and in different ways into the defrost water channel, of which some preferred embodiments are presented below:
  • the channel closure means is designed as a plastic disc placed above the outlet end of the defrost water channel, ie as a lid. There, the plastic disc can be fixed by adhering to the outlet end of the tube or is held with a water-soluble retaining ring.
  • the channel closure means is formed as a plastic disc in a channel section piece which forms a separate component of the Abtauwasserkanals.
  • the Abtauwasserkanal is therefore not one-piece, but has a separate channel section piece, z. B. a piece of pipe z. B. at the outlet of Abtauwasserkanals is attached to this, or is used between the defrost water outlet of the refrigerator and the Abtauwasserkanal.
  • the plastic disc is already integrated, it may be glued to the inner wall of the channel section piece here.
  • the channel closure means is formed as a flat or spherical plug in Abtauwasserkanal, which is dissolved in contact with water from the side walls of Abtauwasserkanals and flushed from the defrost water channel
  • the seal by the channel closure means should not in any case mean a 100% air permeability, but should, for. B. go so far that in a normal transport and operation of the refrigerator only a very small exchange of air between the interior of the refrigerator and the environment takes place, which does not lead to noticeably stronger icing of the evaporator.
  • the channel closure means prevents a larger amount of air (eg> 10 ml or> 100 ml) from being sucked into the interior space when the door of the refrigeration device is opened and a negative pressure is briefly generated in the interior space as a result.
  • the channel closure means is permeable to air at least in the flow direction of the defrost water.
  • This property serves to allow the air displaced by the inflowing defrost water to escape from the defrost water channel.
  • This ensures that the Abtauwasserkanal is reliably released in due course.
  • This can be achieved by arranging in the channel closure means at least one small inner diameter passage opening which connects the regions of the defrost water channel lying upstream and downstream of the channel closure means.
  • the inner diameter of the passage opening is for example 0.01 mm to 1 mm, preferably 0.05 mm to 0.5 mm.
  • Such a passage opening can be particularly easily introduced into a channel closure means made of plastic, in particular into a plastic disc or a plastic stopper.
  • the invention thus allows the representation of a well-defined vent cross section in the channel closure means, which is difficult with a completely water-soluble channel closure means.
  • the channel closure means is permeable to air only in the flow direction of the defrost water.
  • This includes or forms z. B. a one-way valve, in particular a poppet valve or a ball valve. This may e.g. be arranged in a plastic disc forming the channel closure means.
  • an air-permeable channel closure means may also include a membrane which is permeable to air, at least in the direction of flow of the defrosting water.
  • the channel closure means may comprise a passage opening closed by such a membrane.
  • the membrane can be water-soluble.
  • the membrane is z. B. designed so that they pass more air with increasing pressure difference, it is preferably ensured that in the resulting from the opening of the door pressure difference only little air is sucked into the interior of the refrigerator.
  • the membrane is preferably designed so that the pressure of the dammed defrosting water is sufficient to let the air in the defrosting water flow through the membrane to the outside.
  • it is advantageous if the membrane in the flow direction of the defrost water is more permeable to air than in the other direction, more preferably it is a unidirectional air-permeable membrane.
  • a biological growth inhibiting substance may be placed as a countermeasure in the area of the defrost water evaporation z. Salt or other suitable chemicals alkalis such as cationic surfactants or the like.
  • the substance that prevents biological growth may also be a biocide, especially a bactericide or fungicide. For example, this substance can be fixed in a packet or as a tablet in the condensate bucket, so that the substance is buried on contact with the defrost water.
  • the substance which prevents the biological growth in defrost water may be integrated into the water-soluble fastener of the channel sealant.
  • the substance is activated only when the biological growth due to the dissolving fastener of the channel closure means actually has to be prevented.
  • the substance may be provided separately from the channel closure means in the defrost water channel, for example in the flow direction of the defrost water before and / or behind the channel closure means or in the siphon.
  • the channel closure means in Abtauwasserkanal is arranged substantially transversely to the flow direction of the defrost water.
  • the outer geometry of the channel closure means is substantially congruent to the internal geometry of the Abtauwasserkanals, so that the channel closure means reliably seals the defrost water channel, as long as it is not solved by contact with water.
  • the size of the required channel closure means is therefore essentially determined by the size of the defrost water channel, so that the channel closure means can be designed to be small and inexpensive.
  • the Abtauwasserkanal comprises a siphon.
  • the siphon fills with the first defrost cycles or with defrost water and thereby prevents air from entering the interior of the refrigerator. At the same time the defrost water can drain easily.
  • the channel closure means is arranged in the flow direction of the defrost water behind the siphon. When defrosting the evaporator of the refrigerator, therefore, the siphon is first filled with defrost water. Only then does the drainage valve come into contact with the water and dissolve.
  • the substance for preventing the biological growth is additionally arranged upstream of the siphon, in particular in the flow direction of the defrosting water, so that it also acts on the water held in the siphon.
  • the substance can be arranged, for example, in tablet form or in any other form in the defrost water channel, for example as salt, gel or liquid.
  • the siphon can z. B. be designed as a tube siphon, so have a U-shaped tube, the lower bend always remains filled with condensation and thus prevents the entry of ambient air into the evaporator chamber. This training is particularly easy to manufacture.
  • the siphon can also be designed as a bottle, cup, baffle or bell siphon.
  • the corresponding cup is arranged in the evaporation tray, so that the condensation from the cup flows directly into this.
  • a cover is arranged above the siphon, which indeed allows the overflow of water, but slows down the drying of the siphon or the cup.
  • Fig. 1 shows schematically a longitudinal section through a Abtauwasserkanal a
  • Fig. 2 shows a cross section through the Abtaufelkanal of FIG. 1 along the
  • FIG. 3 shows schematically arranged on the back of a refrigerator
  • Fig. 4 shows schematically a arranged on the back of a refrigerator
  • Fig. 5 shows schematically a arranged on the back of a refrigerator
  • FIG. 6 shows an arrangement on the rear wall of a refrigerator with Abtauwasserkanal and evaporation tray in longitudinal section, with a channel closure means according to another embodiment.
  • Fig. 7 shows schematically a longitudinal section through a Abtauwasserkanal a
  • Refrigerating appliance with a channel closure means according to another embodiment.
  • the Abtauwasserkanal 2 is a hose and has a U-shaped siphon 5.
  • the channel closure means 1 is arranged so that it comes into contact with the defrost water only after filling the siphon 5.
  • the channel closure means 1 is a plastic disc, which is fastened with a water-soluble adhesive 20 on the tube inner wall. If the Kanalver- closing means 1 after filling the siphon 5 with condensation in contact, the triggers the
  • Adhesive 20 and the disc 1 is released from the inner walls of Abtauwasserkanals 2. It then either aligns parallel to the flow direction F or is flushed out with the condensation water from the Abtauwasserkanal 2, so this definitely is released. In this way, ambient air or moisture can not flow through the defrost water channel 2 at any time against the flow direction F to the evaporator 6 and freeze it.
  • a tablet having a biological growth preventing substance 4 is disposed in the siphon.
  • the siphon 5 fills up with dew water
  • the tablet 4 dissolves, so that the biological growth-preventing substance is rinsed together with the residues of the adhesive 20 of the channel closure means 1 in the evaporation tray, where it prevents the residues to the breeding ground for bacteria or the like.
  • Fig. 2 shows the Abtauwasserkanal 2 with the channel closure means 1 in cross section.
  • the Abtauwasserkanal 2 has a substantially circular cross-section, so that the channel closure means 1 is a round plastic disc.
  • the outer circumference of the disc 1 is slightly smaller than the inner circumference of the Abtauwasserkanals 2.
  • the resulting gap is, however, at least partially filled with water-soluble adhesive 20.
  • the glued-in channel closure means 1 seals the defrost water channel 2 against ambient air and moisture flowing in against the flow direction F into the defrost water channel.
  • the plastic disk forming the channel closure means 1 has a small passage opening 24. This opening is merely a small round hole with a small diameter, which allows the displaced by the defrost water from the Abtauwasserkanal 2 air escapes to the outside and thereby ensures that the defrost water also reaches the channel closure means 1.
  • the defrost water flows through a designed as a pipe or hose sewer 2, which has an S-shaped siphon 5.
  • a pipe or hose sewer 2 which has an S-shaped siphon 5.
  • this opens into an evaporation tray 10, which is at least partially disposed above a compressor 1 1 to use its waste heat to evaporate the condensation water.
  • the channel closure means is designed as a cover 1, which is preferably formed from plastic. This extends over the front te of the tube at the outlet end 12 of Abtauwasserkanals. Due to the attachment of the lid 1 with a water-soluble agent, in particular adhesive, this is released from the outlet end 12 as soon as it comes into contact with water, and falls into the evaporation tray 10.
  • the cover 1 can be adapted to the cross section of the outlet end 12 of the siphon 5 , or also have a different cross-sectional shape.
  • the lid 1 may also be attached to the outlet end 12 with a water-soluble clamp.
  • Fig. 4 the insulated wall 7 of a refrigerator is shown schematically.
  • defrosting water is collected in defrosting water guide 8 during defrosting of the evaporator and removed from the refrigeration appliance through a passage 9.
  • the defrost water then flows through a designed as a pipe or hose sewer 2, which has a U-shaped siphon 5.
  • a pipe or hose sewer 2 which has a U-shaped siphon 5.
  • the channel closure means is integrated here as a disk 1 in a separate channel section piece 3, which is inserted between the siphon 5 and a tail pipe section 14 of the Abtauwasserkanals.
  • the channel section piece 3 can be attached in particular to the pipe of the siphon 5 and the pipe section 14 or screwed or glued to this. However, only the disc 1 with water-soluble agents or adhesive in the channel section piece 3 is attached.
  • the defrost water flows through a designed as a pipe or hose sewer 2, which has a U-shaped siphon 5.
  • a pipe or hose sewer 2 which has a U-shaped siphon 5.
  • this opens into an evaporation tray 10, which is at least partially disposed above a compressor 11 in order to use its waste heat to evaporate the dew water.
  • the channel closure means is formed as a thick disc 1, which is arranged on the end face of the tube at the outlet end 12 of the Abtauwasserkanals and at the edges of the outlet end 12 with water-soluble agents, preferably adhesive, is attached.
  • Fig. 6 shows an arrangement in which the Abtauwasserkanal 2 is provided with a cup siphon 15. Again, a defrost water 8 is passed through a passage 9 in the device insulation 7. This is followed by a Abtauwasserkanal 2, which opens at its outlet end 16 down into a cup-like container 17. The cup 17 is disposed in an evaporation tray 10 and covered at the top with a cap 18 which protects the siphon 15 from drying out.
  • the channel closure means is formed as a plug 1, which is used here in a separate channel section piece 3, in which the plug 1 with water-soluble fastening means, preferably adhesive, has been attached.
  • the Kanalabintroductorys- piece 3 is connected between the defrost water 8 and the Abtauwasserkanal 2. If the plug 1 is released from its position by dissolving the fastener in contact with water, it falls to the bottom of the cup-shaped container 17 and is not required, but can remain there.
  • a favorable position of the channel closure means 1 - in this case in the form of a disk - in a siphon 5 of the defrost water channel 2 is to be shown with reference to FIG. Schematically, in Fig.
  • the dashed line L indicates the lowest water level at which the water safely prevents the exchange of air between the upstream and downstream sections of Abtauwasserkanals 2.
  • the channel closure means 1 is arranged in the downstream portion such that its lowermost point 21 is only a few millimeters above the line L. Thereby, the channel closure means 1 is released by inflowing defrost water from the inner walls of Abtauwasserkanals 2, as soon as the siphon 5 fulfills its function.
  • the channel closure means can then sink to the lowest point of the siphon 5.
  • a similar water level L can also be found in a siphon or other type of siphon. Again, the channel closure means 1 can be arranged just above this line L. LIST OF REFERENCE NUMBERS

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)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

L'invention concerne un appareil de froid, en particulier un appareil de froid "No Frost", pourvu d'un conduit d'écoulement d'eau de dégivrage (2) obturé par un moyen d'obturation de conduit (1). Ce moyen d'obturation de conduit est non, ou seulement partiellement, hydrosoluble et fixé sur ou dans le conduit d'écoulement d'eau de dégivrage (2) par l'intermédiaire d'un moyen de fixation hydrosoluble, de préférence d'une colle hydrosoluble.
EP10742118.2A 2009-08-21 2010-07-23 Appareil de froid à conduit d'écoulement d'eau de dégivrage obturé par un moyen d'obturation de conduit Not-in-force EP2467655B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200910028775 DE102009028775A1 (de) 2009-08-21 2009-08-21 Kältegerät mit einem Abtauwasserkanal und einem Siphon
DE200920011510 DE202009011510U1 (de) 2009-08-24 2009-08-24 Kanalverschlussmittel für einen Abtauwasserkanal eines Kühlgerätes, Abtauwasserkanal eines Kühlgerätes sowie Kühlgerät
PCT/EP2010/060753 WO2011020677A2 (fr) 2009-08-21 2010-07-23 Appareil de froid à conduit d'écoulement d'eau de dégivrage obturé par un moyen d'obturation de conduit

Publications (2)

Publication Number Publication Date
EP2467655A2 true EP2467655A2 (fr) 2012-06-27
EP2467655B1 EP2467655B1 (fr) 2013-05-01

Family

ID=43607375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10742118.2A Not-in-force EP2467655B1 (fr) 2009-08-21 2010-07-23 Appareil de froid à conduit d'écoulement d'eau de dégivrage obturé par un moyen d'obturation de conduit

Country Status (4)

Country Link
EP (1) EP2467655B1 (fr)
CN (1) CN102483284B (fr)
ES (1) ES2411905T3 (fr)
WO (1) WO2011020677A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102230711A (zh) * 2011-06-08 2011-11-02 海尔集团公司 排水管和具有其的冰箱
CN104507364B (zh) * 2012-08-01 2019-04-12 开利公司 制冷销售柜
ES2940287T3 (es) * 2012-09-24 2023-05-05 Carrier Corp Armario de venta refrigerado
CN111380270A (zh) * 2018-12-29 2020-07-07 青岛海尔特种电冰柜有限公司 排水结构及卧式冷柜

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Publication number Priority date Publication date Assignee Title
US2907180A (en) * 1956-10-19 1959-10-06 Gen Motors Corp Refrigerating apparatus having air control means for multiple compartments
US3137146A (en) * 1961-07-27 1964-06-16 Whirlpool Co Refrigeration apparatus
JPH0490480A (ja) * 1990-07-31 1992-03-24 Toshiba Corp 冷蔵庫
JPH10267507A (ja) * 1997-03-28 1998-10-09 Sanyo Electric Co Ltd 冷凍・冷蔵設備の排水装置
DE20000595U1 (de) * 2000-01-17 2000-03-09 Linde Ag, 65189 Wiesbaden Siphon für ein Warenpräsentationsmöbel
CN2660434Y (zh) * 2003-08-27 2004-12-01 海尔集团公司 具有蒸发除霜水功能的电冰箱
CN100447513C (zh) * 2004-01-29 2008-12-31 乐金电子(天津)电器有限公司 冰箱用的除霜水蒸发装置
DE102008040430A1 (de) * 2008-07-15 2010-01-21 BSH Bosch und Siemens Hausgeräte GmbH Kanalverschlussmittel für einen Abtauwasserkanal eines Kühlgerätes, Abtauwasserkanal eines Kühlgerätes sowie Kühlgerät

Non-Patent Citations (1)

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Title
See references of WO2011020677A2 *

Also Published As

Publication number Publication date
ES2411905T3 (es) 2013-07-09
CN102483284B (zh) 2014-12-03
WO2011020677A3 (fr) 2011-06-16
EP2467655B1 (fr) 2013-05-01
CN102483284A (zh) 2012-05-30
WO2011020677A2 (fr) 2011-02-24

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