EP0464711A1 - Verdampfer für Kühlschrank und Verfahren zu seiner Herstellung - Google Patents

Verdampfer für Kühlschrank und Verfahren zu seiner Herstellung Download PDF

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Publication number
EP0464711A1
EP0464711A1 EP91110760A EP91110760A EP0464711A1 EP 0464711 A1 EP0464711 A1 EP 0464711A1 EP 91110760 A EP91110760 A EP 91110760A EP 91110760 A EP91110760 A EP 91110760A EP 0464711 A1 EP0464711 A1 EP 0464711A1
Authority
EP
European Patent Office
Prior art keywords
evaporator
freezer
storage
compartment
connecting portion
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
EP91110760A
Other languages
English (en)
French (fr)
Other versions
EP0464711B1 (de
Inventor
Akio Kurihara
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.)
Altemira Co Ltd
Original Assignee
Showa Aluminum Corp
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 Showa Aluminum Corp filed Critical Showa Aluminum Corp
Publication of EP0464711A1 publication Critical patent/EP0464711A1/de
Application granted granted Critical
Publication of EP0464711B1 publication Critical patent/EP0464711B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/022—Evaporators with plate-like or laminated elements
    • F25B39/024—Evaporators with plate-like or laminated elements with elements constructed in the shape of a hollow panel

Definitions

  • the present invention relates to evaporators for use in refrigerators.
  • the roll-bonded material is prepared from a pair of upper and lower aluminum sheets one of which bears a pattern of adhesion preventing agent printed on its inner surface, by bonding the two sheets to each other under pressure and introducing a pressure fluid into the nonbonded portion to bulge this portion in the form of a tube.
  • the fluid is forced in between the two aluminum sheets at the nonbonded portion with one of the aluminum sheets held with a die over the outer surface thereof, so that the bulged tube portion is protuberant on only one surface of the material which is not held by the die.
  • the presence of the refrigerant channel in the form of bulged tube impairs the appearance. If the evaporator portion is disposed on the rear side of the storage compartment rear wall and held out of sight, no problem will arise as to the appearance, whereas the bulged channel portion is then in contact with the rear surface of the storage compartment rear wall. This reduces the contact area of the evaporator to entail the problem of lower efficiency.
  • the main object of the present invention is to provide an evaporator which is free of the above problems for use in refrigerators.
  • the present invention provides an evaporator for use in a refrigerator having a freezer compartment and a storage compartment under the freezer compartment, the evaporator comprising a freezer evaporator portion positionable at least on the bottom side of the freezer compartment, a storage evaporator portion positionable on the rear side of the storage compartment and a striplike connecting portion interconnecting the two evaporator portions, the freezer and storage evaporator portions and the connecting portion being formed by a sheet of roll-bonded material having a continuous refrigerant channel in the form of a tube bulging on one surface thereof.
  • the evaporator is characterized in that the freezer evaporator portion is to be positioned with its refrigerant channel portion facing outwardly of the freezer compartment, the connecting portion being twisted at an intermediate part of its height to position the storage evaporator portion with its refrigerant channel portion facing outwardly of the storage compartment.
  • the freezer evaporator portion, the storage evaporator portion and the connecting portion of the evaporator is formed by a sheet of roll-bonded material having a tube portion bulged on one surface thereof.
  • the refrigerant channel portions of the freezer and storage evaporator protions can both be arranged as faced outward, with the flat surface of the evaporator positioned inside the storage compartment. In the case where the evaporator is visible directly from inside the storage compartment, the evaporator appears flat and neat because of the absence of the bulged refrigerant channel portion.
  • the flat surface of the evaporator portion is in contact with the rear suface of the storage compartment rear wall. This gives a greatly increased contact area to the evaporator portion to achieve a remardably improved efficiency.
  • a refrigerator has a freezer compartment 1 and a storage compartment 2 under the compartment 1.
  • the refrigerator has an evaporator embodying the invention and comprising an evaporator portion 11 for the freezer compartment 1, an evaporator portion 12 for the storage compartment 2, and a connecting portion 13 interconnecting the two portions.
  • the evaporator is formed by a sheet of roll-bonded material 10 having a continuous refrigerant channel 14 in the form of a tube bulged on one surface of the material as seen in FIG. 3.
  • the evaporator portion 11 for the freezer compartment 1 is channel-shaped when seen from one side and provided on the bottom side, rear side and upper side of the compartment 1.
  • the evaporator portion 12 for the storage compartment 2 is in the form of a flat plate and disposed on the rear side of the rear wall 2a of the storage compartment 2.
  • the connecting portion 13 interconnecting the two evaporator portions 11, 12 is in the form of a strip.
  • the sheet of roll-bonded material 10 having the bulged tubular refrigerant channel 14 protuberant on one surface thereof is formed, in the portion thereof having no refrigerant channel and closer to its one end than the central portion thereof, with two cutouts 3, 3 opposed to each other and L-shaped and inverted L-shaped, respectively, when seen from above.
  • the cutouts 3, 3 have respective long slit portions extending approximately in parallel to each other and respective short slit portions extending outward away from each other.
  • the refrigerant channel portion 14a of the freezer evaporator portion 11 and the refrigerant channel portion 14b of the storage evaporator portion 12 are held in communication with each other by forward and return refrigerant channel portions 14c, 14d of the connecting portion 12.
  • a refrigerant supply tube 15 and a refrigerant discharge tube 16 are connected to the respective ends of the channel portion 14a of the freezer evaporator portion 11.
  • the roll-bonded sheet 10 is bent to form the freezer evaporator portion 11 which is channel-shaped when seen from one side, with its channel portion 14a facing outward.
  • the striplike connecting portion 13 is then folded over rearwardly downward, and at an intermediate part 13a of its height, the connecting portion 13 is twisted through 180 degrees within a horizontal plane, whereby the refrigerant channel portion 14b of the storage evaporator portion 12 is turned over and caused to face outwardly of the storage compartment 2 when the evaporator portion 12 is installed in place.
  • the bulged tubular channel portions 14a, 14b of the freezer and storage evaporator portions 11, 12 can be both arranged as faced outward by twisting the striplike connecting portion 13. Consequently, the flat surface of the evaporator portion 12 can be held in contact with the rear surface of the rear wall 2a of the storage compartment 2. This increases the area of contact between the rear wall 2a and the evaporator portion 12 to achieve a greatly increased efficiency.
  • the intermediate part 13a of the connecting portion 13 to be twisted has opposite side edges which are preferably tapered as seen in FIG. 4, because when the intermediate part 13a is thus tapered and then twisted through 180 degrees within a horizontal plane, the forward and return channel portions 14c, 14d will not be easily folded in a collaped fashion but are more likely to remain unblocked.
  • the intermediate part 13a to be twisted has a length L, and the larger width of the intermediate part 13a is W.
  • the effective taper of the intermediate part 13a is 1.5/100 to 5/100. If the taper of the intermediate part 13a is in this range, the forward and return channel portions 14c and 14d remain unblocked when the intermediate portion 13 is twisted.
  • the roll-bonded material 10 for forming the evaporator is prepared from a pair of upper and lower aluminum sheets 17, 18 one of which bears a required pattern of adhesion preventing agent printed on its inner surface, by bonding the two sheets to each other under pressure and introducing a pressure fluid into the nonbonded portion to bulge this portion in the form of a tube and form the continuous refrigerant channel 14.
  • FIG. 6 shows another embodiment of the present invention which differs from the above embodiment in the pattern of refrigerant channel 14 of the roll-bonded material 10 for forming the evaporator. More specifically, the pattern of the bulged tubular refrigerant channel 14 of the second embodiment is such that the refrigerant flows from the channel portion 14a of the freezer evaporator portion 11 to the channel portion 14b of the storage evaporator portion 12 through a single forward refrigerant channel portion 14c of the connecting portion 13 therebetween.
  • a refrigerant supply tube 15 is connected to one of the channel 14, i.e., to the outer end of the channel portion 14a of the freezer evaporator portion 11, and a refrigerant discharge tube 16 is connected to the other end of the channel 14, i.e., to the outer end of the channel portion 14b of the storage evaporator portion 12.
  • the freezer evaporator portion 11 of the evaporator is channel-shaped when seen sidewise and disposed on the bottom side, rear side and upper side of the freezer compartment 1, but the freezer evaporator portion 11 may be provided at least on the bottom side of the freezer compartment 1.
  • the storage evaporator portion 12 of the evaporator of the present invention is provided alternatively inside the storage compartment and made directly visible. Even in this case, the flat side of the evaporator portion 12 is positioned inside the storage compartment according to the present invention. The evaporator portion 12 therefore will not appear unsightly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP19910110760 1990-06-29 1991-06-28 Verdampfer für Kühlschrank und Verfahren zu seiner Herstellung Expired - Lifetime EP0464711B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP173530/90 1990-06-29
JP17353090A JPH07109343B2 (ja) 1990-06-29 1990-06-29 冷凍・冷蔵庫用蒸発器

Publications (2)

Publication Number Publication Date
EP0464711A1 true EP0464711A1 (de) 1992-01-08
EP0464711B1 EP0464711B1 (de) 1994-10-12

Family

ID=15962242

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910110760 Expired - Lifetime EP0464711B1 (de) 1990-06-29 1991-06-28 Verdampfer für Kühlschrank und Verfahren zu seiner Herstellung

Country Status (4)

Country Link
EP (1) EP0464711B1 (de)
JP (1) JPH07109343B2 (de)
DE (1) DE69104557T2 (de)
ES (1) ES2061123T3 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0711963A1 (de) * 1994-11-09 1996-05-15 Bosch-Siemens HausgerÀ¤te GmbH Kältegerät
EP0795726A1 (de) * 1996-03-12 1997-09-17 Liebherr-Hausgeräte Gmbh Kombinierter Verdampfer für das Sterne- und das Kühlfach eines Haushaltskühlgeräts
EP0917919A3 (de) * 1997-11-06 2001-04-11 Whirlpool Corporation Herstellungsverfahren eines einteiligen Verdampfers, und der hergestellte Verdampfer
WO2004059227A1 (en) * 2002-12-24 2004-07-15 Lg Electronics Inc. Refrigerator

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100594420B1 (ko) * 1999-09-03 2006-07-03 주식회사 엘지이아이 냉장고의 롤본드 증발기
KR100342260B1 (ko) * 2000-07-13 2002-07-02 윤종용 냉장고 및 냉장고용 전열관유니트의 제조방법
KR100884704B1 (ko) * 2007-07-31 2009-02-19 이재한 냉온방석에 사용되는 열교환기

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2481512A (en) * 1945-07-21 1949-09-13 Yoder Co Evaporator structure
US3263440A (en) * 1964-12-14 1966-08-02 Electrolux Ab Refrigeration
FR2451559A1 (fr) * 1979-03-12 1980-10-10 Schmoele Metall R & G Evaporateur d'une installation frigorifique de preference commandee par un compresseur
US4535600A (en) * 1984-04-16 1985-08-20 General Electric Company Temperature control for a cycle defrost refrigerator incorporating a roll-bonded evaporator
DE3709984C1 (en) * 1987-03-26 1987-10-29 Schmoele Metall R & G Method and device for manufacturing evaporators for refrigerating furniture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2481512A (en) * 1945-07-21 1949-09-13 Yoder Co Evaporator structure
US3263440A (en) * 1964-12-14 1966-08-02 Electrolux Ab Refrigeration
FR2451559A1 (fr) * 1979-03-12 1980-10-10 Schmoele Metall R & G Evaporateur d'une installation frigorifique de preference commandee par un compresseur
US4535600A (en) * 1984-04-16 1985-08-20 General Electric Company Temperature control for a cycle defrost refrigerator incorporating a roll-bonded evaporator
DE3709984C1 (en) * 1987-03-26 1987-10-29 Schmoele Metall R & G Method and device for manufacturing evaporators for refrigerating furniture

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0711963A1 (de) * 1994-11-09 1996-05-15 Bosch-Siemens HausgerÀ¤te GmbH Kältegerät
EP0795726A1 (de) * 1996-03-12 1997-09-17 Liebherr-Hausgeräte Gmbh Kombinierter Verdampfer für das Sterne- und das Kühlfach eines Haushaltskühlgeräts
EP0917919A3 (de) * 1997-11-06 2001-04-11 Whirlpool Corporation Herstellungsverfahren eines einteiligen Verdampfers, und der hergestellte Verdampfer
WO2004059227A1 (en) * 2002-12-24 2004-07-15 Lg Electronics Inc. Refrigerator
US7584627B2 (en) 2002-12-24 2009-09-08 Lg Electronics Inc. Refrigerator

Also Published As

Publication number Publication date
EP0464711B1 (de) 1994-10-12
ES2061123T3 (es) 1994-12-01
DE69104557D1 (de) 1994-11-17
DE69104557T2 (de) 1995-05-18
JPH07109343B2 (ja) 1995-11-22
JPH0462377A (ja) 1992-02-27

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