EP1151231B1 - Refrigerator provided with cooled air bypass passages - Google Patents

Refrigerator provided with cooled air bypass passages Download PDF

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Publication number
EP1151231B1
EP1151231B1 EP19980959289 EP98959289A EP1151231B1 EP 1151231 B1 EP1151231 B1 EP 1151231B1 EP 19980959289 EP19980959289 EP 19980959289 EP 98959289 A EP98959289 A EP 98959289A EP 1151231 B1 EP1151231 B1 EP 1151231B1
Authority
EP
European Patent Office
Prior art keywords
cooled air
evaporator
refrigerator
fan
refrigerating compartment
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.)
Expired - Lifetime
Application number
EP19980959289
Other languages
German (de)
French (fr)
Other versions
EP1151231A1 (en
Inventor
Jung O. Video Res. Ctr. Daewoo El. Co. Ltd. LEE
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.)
WiniaDaewoo Co Ltd
Original Assignee
Daewoo Electronics Co Ltd
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 Daewoo Electronics Co Ltd filed Critical Daewoo Electronics Co Ltd
Priority to PCT/KR1998/000444 priority Critical patent/WO2000037869A1/en
Publication of EP1151231A1 publication Critical patent/EP1151231A1/en
Application granted granted Critical
Publication of EP1151231B1 publication Critical patent/EP1151231B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/065Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return
    • F25D2317/0653Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return through the mullion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/067Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/068Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
    • F25D2317/0682Two or more fans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/04Refrigerators with a horizontal mullion

Description

TECHNICAL FIELD OF THE INVENTION
The present invention relates to a refrigerator; and, more particularly, to a refrigerator with air bypass passages which allow cooled air to circulate therein, even when some portions of an evaporator are covered with frost.
BACKGROUND ART
Generally a refrigerator is equipped with an evaporator for cooling air to be circulated therein. After a prolonged use, frost is bound to be formed on the evaporator.
If too much frost gets formed on the evaporator, the cooling performance thereof gets deteriorated and the circulation of the cooled air also gets hindered within the refrigerator by the frost blocking the air passages.
To defrost the frost from the evaporator, the refrigerator is conventionally provided with a defrosting mode. Whether to operate or not in the defrosting mode is determined by a power dissipated for driving a compressor and a variation of the temperature during the driving of the compressor.
However, in the conventional refrigerator, too much frost is usually formed on the evaporator before the refrigerator begins automatically to operate in the defrosting mode, first resulting in blocking of the cooled air passages, resulting in the performance of the refrigerator being deteriorated. US-A-5,826,441 and EP-A-0 592 004 show a refrigerator having a freezer compartment with a fan, a refrigerating compartment with a fan, and an evaporator. The refrigerator comprises a first passage formed by one exterior wall of the evaporator and a panel for flowing cooled air from the refrigerating compartment to the fan of the refrigerating compartment. Further, a second passage is provided for flowing the cooled air from the freezer compartment to the fan of the freezer compartment. Some of the cooled air flowing through these passages might not come into contact with the exterior walls of the evaporator. However, there is still a risk that these passages might be blocked by a large amount of frost formed on the exterior walls of the evaporator.
DISCLOSURE OF THE INVENTION
It is, therefore, a primary object of the present invention to provide a refrigerator with air bypass passages which allow cooled air to circulate therein, even when some portions of an evaporator are covered with frost.
The above object of the present invention is accomplished by providing a refrigerator having a freezer compartment with a fan, a refrigerating compartment with a fan, and an evaporator, said refrigerator comprising a first bypass passage for flowing cooled air from the refrigerating compartment directly to the fan of the refrigerating compartment, thereby allowing the cooled air to bypass the evaporator; and a second bypass passage for flowing the cooled air from the freezer compartment directly to the fan of the freezer compartment, thereby allowing the cooled air to bypass the evaporator, the first bypass passage being formed by a panel, which is separated from the evaporator, and the rear wall of the refrigerator.
BRIEF DESCRIPTION OF THE DRAWINGS
The above and other objects and features of the instant invention will become apparent from the following description of preferred embodiment taken in conjunction with the accompanying drawings, in which:
  • Fig. 1 illustrates a schematic top view of a preferred embodiment of the present invention;
  • Fig. 2 and 3 are sectional views of Fig. 1 along lines II-II and III-III, respectively.
  • Fig. 4 depicts a sectional plan view of the preferred embodiment of the present invention; and
  • Fig. 5 describes a rear view showing a first bypass passage according to the preferred embodiment of the present invention.
  • MODES OF CARRYING OUT THE INVENTION
    A refrigerator provided with a cooled air bypass passages according to the preferred embodiment of the present invention is disclosed in Figs. 1 to 5. As shown in Figs. 1 and 2, the refrigerator 10 has a freezer compartment 18 on an upper portion thereof and a refrigerating compartment 34 on a lower portion thereof. The refrigerator 10 further has a door 12 having a grip 14 and a separating wall 41 at back of the freezer compartment 18 to thereby form a freezing space. The refrigerator 10 further has a rear wall 13 filled with urethane foams.
    As shown in Figs. 2 and 4, an evaporator 20 is mounted in the rear portion of the freezer compartment 18. The evaporator 20 has a plurality of fins 22 thereon. On top of the evaporator 20 is formed a retaining space 28 for retaining a fan 32 for the refrigerating compartment 34. The fan 32 is mounted in the retaining space 28 and driven by a driving motor 30. The fan 32 blows cooled air in the retaining space 28 into the refrigerating compartment 34 through a duct 46.
    The cooled air sucked into the refrigerating compartment 34 is circulated therein. The cooled air circulated in the refrigerating compartment 34 returns to the retaining space 28 after passing through an outlet 25, a first returning area 26 and a horizontal area of a second returning area 44, then ascends to the rear portion of the evaporator 20.
    The cooled air passes through two passages, as it ascends to the rear portion of the evaporator 20. One of the passages is an evaporator contacting passage 35 formed between a perpendicular panel 42 and the evaporator 20 to allow the cooled air to ascend to the fins 22 of the evaporator 20. The other passage is a first bypass passage 36 formed by the perpendicular panel 42 and a rear wall 13 to allow the cooled air to be sucked directly into the retaining space 28. The cooled air sucked into the retaining space 28 enters the duct 46 by the action of the fan 32 through an inlet 52 of a cooled air inducing pipe 50. An inner wall 54 of the cooled air inducing pipe 50 formed on backside of the separating wall 41 serves to change the direction of the flow of the cooled air. The presence of the first bypass passage 36 allows the cooled air to circulate even if the evaporator contacting passage 35 gets blocked with the frost formed therein.
    As shown in Fig. 3 and 4, a retaining space 29 for retaining the fan 33 for the freezer compartment 18 is formed on top of the evaporator 20. The fan 33 is mounted in the retaining space 29 and driven by a driving motor 31. The fan 33 blows the cooled air in the retaining space 29 into the freezer compartment 18 through an inlet 39 for the cooled air.
    The cooled air sucked into the freezer compartment 18 is circulated therein. The cooled air circulated in the freezer compartment 18 returns to the retaining space 29 after passing through the outlet 23, a horizontal returning area 24 and a second bypass passage 40, then ascends to the front portion of the evaporator 20.
    The second bypass passage 40 formed by the evaporator 20 and the separating wall 41 makes a large spare space to allow some of the cooled air to ascend therethrough to the retaining space 29 and contact the fins 22, with the rest bypassing the fins 22. The presence of the second bypass passage 40 allows the cooled air to circulate even if a large amount of frost is formed between the evaporator 20 and the separating wall 41.
    As shown in Fig. 5, the first bypass passage 36 for bypassing the cooled air to a fan 32 for the refrigerating compartment 34 has a first side wall being tilted when viewed from the rear of the refrigerator 10 and a nearly perpendicular second side wall forming a passage for connecting a second returning area 44, the retaining space 28 and the inlet 52 of the cooled air inducing pipe 50. Further, it is preferable that the length of the inlet portion of the first bypass passage 36 connected to the second returning area 44 is about 2/3 of the lateral length of the evaporator 20.
    According to the preferred embodiment of the present invention, the bypass passages allow the cooled air to circulate inside the refrigerator until the defrosting mode is initiated to remove the frost filling the cooled air circulation passage and around the evaporator.
    Although the invention has been shown and described with respect to the preferred embodiment, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.

    Claims (3)

    1. A refrigerator having a freezer compartment (18) with a fan (33), a refrigerating compartment (34) with a fan (32), and an evaporator (20), said refrigerator (10) comprising:
      a first bypass passage (36) for flowing cooled air from the refrigerating compartment (34) directly to the fan (32) of the refrigerating compartment (34), thereby allowing the cooled air to bypass the evaporator (20); and
      a second bypass passage (40) for flowing the cooled air from the freezer compartment (18) directly to the fan (33) of the freezer compartment (18), thereby allowing the cooled air to bypass the evaporator (20);
         characterized in that
         the first bypass passage (36) is formed by a panel (42), which is separated from the evaporator (20), and the rear wall (13) of the refrigerator (10).
    2. The refrigerator according to claim 1, wherein the length of an inlet portion of the first bypass passage (36) is about 2/3 of the length of the evaporator (20).
    3. The refrigerator according to claim 1, wherein the cooled air from the fan (32) of the refrigerating compartment (34) flows through a cooled air inducing pipe (50) mounted in front of the fan (32), changing its direction of flow to the refrigerating compartment (34).
    EP19980959289 1998-12-18 1998-12-18 Refrigerator provided with cooled air bypass passages Expired - Lifetime EP1151231B1 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    PCT/KR1998/000444 WO2000037869A1 (en) 1998-12-18 1998-12-18 Refrigerator provided with cooled air bypass passages

    Publications (2)

    Publication Number Publication Date
    EP1151231A1 EP1151231A1 (en) 2001-11-07
    EP1151231B1 true EP1151231B1 (en) 2004-09-15

    Family

    ID=19531215

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP19980959289 Expired - Lifetime EP1151231B1 (en) 1998-12-18 1998-12-18 Refrigerator provided with cooled air bypass passages

    Country Status (3)

    Country Link
    EP (1) EP1151231B1 (en)
    DE (1) DE69826333T2 (en)
    WO (1) WO2000037869A1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN101231547B (en) * 2008-02-21 2010-06-09 四川大学 Diffluence orientation air supply type computer cabinet

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN111609606A (en) * 2019-02-26 2020-09-01 青岛海尔电冰箱有限公司 Refrigerator with double air supply fans and air supply control method thereof

    Family Cites Families (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    KR940009644A (en) * 1992-10-09 1994-05-20 배순훈 Refrigeration temperature control method and device
    TW326488B (en) * 1994-06-02 1998-02-11 Samsung Electronics Co Ltd Refrigerator
    US5826441A (en) * 1997-06-06 1998-10-27 Daewoo Electronics Co., Ltd. Refrigerator having a device for generating air curtains

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN101231547B (en) * 2008-02-21 2010-06-09 四川大学 Diffluence orientation air supply type computer cabinet

    Also Published As

    Publication number Publication date
    DE69826333T2 (en) 2005-10-06
    EP1151231A1 (en) 2001-11-07
    WO2000037869A1 (en) 2000-06-29
    DE69826333D1 (en) 2004-10-21

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