EP3355006A1 - Unité de refroidissement pourvu de conduit d'air ramifié - Google Patents

Unité de refroidissement pourvu de conduit d'air ramifié Download PDF

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Publication number
EP3355006A1
EP3355006A1 EP18150543.9A EP18150543A EP3355006A1 EP 3355006 A1 EP3355006 A1 EP 3355006A1 EP 18150543 A EP18150543 A EP 18150543A EP 3355006 A1 EP3355006 A1 EP 3355006A1
Authority
EP
European Patent Office
Prior art keywords
downstream portion
downstream
barrier
refrigerating appliance
air duct
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Withdrawn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
EP18150543.9A
Other languages
German (de)
English (en)
Inventor
Ming Zhang
Jing Li
Michaela Malisi
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 EP3355006A1 publication Critical patent/EP3355006A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • 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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • 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
    • F25D17/08—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 using ducts

Definitions

  • the present invention relates to a refrigeration appliance, in particular a domestic refrigeration appliance, with a branched air duct.
  • Such an air duct is used in particular in no-frost refrigerators to distribute cold air from an evaporator to different temperature zones.
  • the ratio in which the cold air generated at the evaporator is distributed to the temperature zones depends on the ambient temperature. The lower this is, the smaller the amount of cold air needed to cool the warmer temperature zone relative to the cold air requirement of the colder temperature zone.
  • At least one barrier in the air duct is required, which in the closed position cuts off one of the temperature zones from the cold air supply.
  • a refrigerator in which such a barrier comprises a closure flap and a seal of foam interacting with the closure flap is made WO 2016/078894 A1 known.
  • a closed-cell foam should be used for the seal, which should ideally deform and hermetically seal against contact with the flap or walls of the air channel.
  • the selection of foams suitable for this purpose is limited by the requirement that foodstuffs stored in the refrigerating appliance must not be contaminated by perspiration of the foam.
  • Another problem is that the elasticity of many foams is highly temperature dependent and it can not always be guaranteed that a foam that has been compressed at a high temperature will return to its original shape when the compression pressure at low temperature is eliminated. Leakage is the consequence.
  • the barrier If the barrier is leaking, part of the cold air enters a temperature zone where it is not needed and it assumes unnecessarily low temperatures. This increases the Energy consumption of the refrigerator and may under certain circumstances, especially if in a temperature zone with set temperature above 0 ° C, the actual temperature falls below 0 ° C, cause damage to the refrigerated goods.
  • the object of the invention is to provide a refrigerator with branched air duct and a barrier, in which the risk that air can pass through the closed lock is reduced in a simple and cost-effective manner.
  • the object is achieved by providing, in a refrigerator, in particular a domestic refrigerator, with an air duct having an upstream portion and two downstream portions, wherein the portions meet at a junction and the first downstream portion is closable by a barrier, the first downstream portion at the junction with both the upstream portion and the second downstream portion, each at a sharp or right angle.
  • the barrier should be flush in a closed position against a wall of the upstream section and a wall of the second downstream section.
  • the object is further achieved by providing in a refrigeration appliance, in particular a domestic refrigerator, with an air duct having an upstream portion and two downstream portions, wherein the portions meet at a junction and the first downstream portion is closed by a lock, the lock in a closed position to a wall of the upstream portion and a wall of the second downstream portion is flush.
  • a refrigeration appliance in particular a domestic refrigerator
  • an air duct having an upstream portion and two downstream portions, wherein the portions meet at a junction and the first downstream portion is closed by a lock, the lock in a closed position to a wall of the upstream portion and a wall of the second downstream portion is flush.
  • both angles are right angles so that the second downstream portion extends in straight line extension of the upstream portion and the air can change direction without change of direction from the upstream to the second downstream portion.
  • the second downstream portion preferably extends in a straight line extension of the upstream portion.
  • the barrier When the barrier engages the junction in an open position, it simultaneously narrows access to the second downstream section. Therefore, even a slight movement of the barrier can be sufficient to induce a strong flow of air into the first downstream section.
  • the lock may be formed as a flap which is pivotable about an axis.
  • the flap in open position can present a surface to the airflow that redirects air flow into the first downstream portion.
  • a fan for driving the airflow should be provided at the upstream portion.
  • the refrigeration device should have at least a first temperature zone, into which the first downstream section opens, and a second temperature zone, into which the second downstream section opens.
  • the first temperature zone preferably has a higher setpoint temperature than the second temperature zone. A shortfall of the target temperature of the first zone can be strictly avoided by closing the lock, so that a supercooling, could be damaged in the refrigerated goods, can be excluded.
  • Fig. 1 shows a schematic front view of the body 1 of a refrigerator.
  • the doors of the refrigerator are omitted to two temperature zones 2, 3 inside, for example, a normal refrigerator and a freezer to show.
  • a rear wall 4 of the colder temperature zone 3 passages 5, 6 are formed. Behind the rear wall 4, an air channel 7 extends. The outline of the air channel 7 is with shown dashed lines; it extends arcuately from the impeller 8 of a fan 9 to the passageway 5.
  • Fig. 2 shows a section through the body 1 along in Fig. 1 Level designated II-II.
  • the plane II-II extends through the axis of the paddle wheel 8.
  • Behind the rear wall 4 is an intermediate wall 10 which separates the air channel 7 from an evaporator chamber 11.
  • the evaporator chamber 11 accommodates an evaporator 12 and a motor 13 of the fan 9.
  • the impeller 8 overlaps with an opening 14 of the intermediate wall 10, so that by the rotation of the impeller air is sucked from the evaporator chamber 11 and pumped into the air duct 7.
  • Fig. 3 shows a further section through the body 1 along the plane III-III of Fig. 1 , This plane passes through the passage 5; Via the passage 6, the air from the temperature zone 3 returns to the evaporator chamber 11.
  • a section 15 of the air channel 7 extends through a passage of the intermediate wall 10 initially in the direction of the back of the body 1 and then rises within a thermal barrier coating 16 of the body to a passage 17 (s. Fig. 1 ), via which the temperature zone 2 is supplied with cold air.
  • Fig. 4 shows an enlarged section along the plane III-III through a portion of the air duct 7.
  • a passage 5 leading downstream section 20 meet and also located downstream of the branch 18 section 15 to each other.
  • the section 19 is oriented vertically ascending along a center line 19 '.
  • the intermediate wall 10 and the rear wall 4 of the temperature zone 3 each delimit in a straight line the upstream portion 19 and an adjacent to the branch 18 portion of the downstream portion 20, so that a center line 20 'of the portion 20 and the center line 19' of the portion 19 with each other aligned. Only in a non-disappearing distance from the branch 18 sets in section 20 a Curvature of the walls 4, 10, through which in the section 19 is still parallel to the walls 4, 10 directed vertically upward air flow to the front of the body 1 is deflected.
  • the section 15 extends immediately after the branch 18, first horizontally along a center line 15 ', which in each case at right angles ⁇ , y on the center lines 19', 20 'strikes. He is closed by a flap 21.
  • the air flow passes the branch on the way from the upstream portion 19 to the downstream portion 20 of the air passage without receiving a pulse directed away from the downstream portion 15, it passes through the downstream portion 15 without stowing in front of the door 21.
  • the air pressures in front of and behind the flap 21 therefore differ at best insignificantly, so that even if a gap 22 exists between edges 23, 24 of the flap 21 and the walls of the section 15, leakage through this gap 22 is negligible.
  • a pivot axis 26 of the flap 21 extends at its edge 23 facing the channel section 20.
  • the flap 21 is pivotable into the branch 18, so that in an in Fig. 4 shown as a dashed outline open position in the closed position, the channel portion 15 facing the main side 27 of the flap 21 of the air flow faces and deflects a part of it in the channel section 15 into it.
  • the flap 21 is arranged directly at the entrance of the downstream portion 15 in an opening 25 of the intermediate wall 10 so that it is flush in the closed position with the intermediate wall 10.
  • the flap 21 has edges 28, 29 which intersect the main side 27 at an obtuse angle ⁇ , and the opening 25 is bounded by these edges 28, 29 complementary oblique sealing surfaces 30.
  • the closed position of the flap 21 is then the position in which it abuts the sealing surfaces 30.
  • the edges 28, 29 and opposite sealing surfaces 30 in the closed position not are perfectly parallel and therefore only touch selectively, they form in the vicinity of a contact point in any case a very narrow gap, which provides only a negligible leakage rate due to the small pressure difference between junction 18 and channel section 15.
  • a step 31 is formed around the channel portion 15, against which the main side 27 of the flap 21 sealingly. Manufacturing tolerances in the edge lengths of the flap 21 and the opening 25 and the resulting possibly not negligible widths of the joint 22 therefore have no influence on the leak rate nor on the accuracy with which the flap 21 is flush with the partition 10.
  • Fig. 7 shows a section through an air duct 7 flush with the wall 10 flap 21 according to another embodiment of the invention.
  • the course of the channel section 15 downstream of the flap 21 has no influence on the air flow in the sections 19, 20 as long as the flap 21 is closed. It can therefore be saved space by the channel portion 15 as shown immediately behind the flap 21 increases.

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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
EP18150543.9A 2017-01-26 2018-01-08 Unité de refroidissement pourvu de conduit d'air ramifié Withdrawn EP3355006A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017201232.3A DE102017201232A1 (de) 2017-01-26 2017-01-26 Kältegerät mit verzweigtem Luftkanal

Publications (1)

Publication Number Publication Date
EP3355006A1 true EP3355006A1 (fr) 2018-08-01

Family

ID=60937642

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18150543.9A Withdrawn EP3355006A1 (fr) 2017-01-26 2018-01-08 Unité de refroidissement pourvu de conduit d'air ramifié

Country Status (3)

Country Link
EP (1) EP3355006A1 (fr)
CN (1) CN108362063A (fr)
DE (1) DE102017201232A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1111397A (en) * 1965-02-08 1968-04-24 Westinghouse Electric Corp Refrigeration apparatus
EP0612965A2 (fr) * 1993-02-26 1994-08-31 Kabushiki Kaisha Toshiba Réfrigérateur à échangeur de chaleur configuré de manière optimale
US5720185A (en) * 1995-06-16 1998-02-24 Daewoo Electronics Co., Ltd. Refrigerator having a cool air dispersing shelf
WO2007074125A1 (fr) * 2005-12-29 2007-07-05 Arcelik Anonim Sirketi Dispositif de refroidissement
DE102010039536A1 (de) * 2010-08-19 2012-02-23 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit einem Eisbereiter
WO2016078894A1 (fr) 2014-11-18 2016-05-26 BSH Hausgeräte GmbH Appareil de froid à canal d'air froid

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE442670B (sv) * 1981-10-13 1986-01-20 Leb Beratende Ingenieure Gmbh Ventilationsspjell
KR101583458B1 (ko) * 2013-06-18 2016-01-08 (주)모아텍 유체이동 조절 장치
CN204494957U (zh) * 2015-03-24 2015-07-22 合肥美菱股份有限公司 一种冰箱电动风门及冰箱

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1111397A (en) * 1965-02-08 1968-04-24 Westinghouse Electric Corp Refrigeration apparatus
EP0612965A2 (fr) * 1993-02-26 1994-08-31 Kabushiki Kaisha Toshiba Réfrigérateur à échangeur de chaleur configuré de manière optimale
US5720185A (en) * 1995-06-16 1998-02-24 Daewoo Electronics Co., Ltd. Refrigerator having a cool air dispersing shelf
WO2007074125A1 (fr) * 2005-12-29 2007-07-05 Arcelik Anonim Sirketi Dispositif de refroidissement
DE102010039536A1 (de) * 2010-08-19 2012-02-23 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit einem Eisbereiter
WO2016078894A1 (fr) 2014-11-18 2016-05-26 BSH Hausgeräte GmbH Appareil de froid à canal d'air froid

Also Published As

Publication number Publication date
CN108362063A (zh) 2018-08-03
DE102017201232A1 (de) 2018-07-26

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