EP2317252A2 - Unité d'évaporateur - Google Patents

Unité d'évaporateur Download PDF

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Publication number
EP2317252A2
EP2317252A2 EP10172987A EP10172987A EP2317252A2 EP 2317252 A2 EP2317252 A2 EP 2317252A2 EP 10172987 A EP10172987 A EP 10172987A EP 10172987 A EP10172987 A EP 10172987A EP 2317252 A2 EP2317252 A2 EP 2317252A2
Authority
EP
European Patent Office
Prior art keywords
tube
evaporator
unit
fin
fins
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Withdrawn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
EP10172987A
Other languages
German (de)
English (en)
Other versions
EP2317252A3 (fr
Inventor
Rüstem Asik
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.)
Vestel Beyaz Esya Sanayi ve Ticaret AS
Original Assignee
Vestel Beyaz Esya Sanayi ve Ticaret AS
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 Vestel Beyaz Esya Sanayi ve Ticaret AS filed Critical Vestel Beyaz Esya Sanayi ve Ticaret AS
Publication of EP2317252A2 publication Critical patent/EP2317252A2/fr
Publication of EP2317252A3 publication Critical patent/EP2317252A3/fr
Withdrawn legal-status Critical Current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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • F28F1/325—Fins with openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/0071—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/08—Fins with openings, e.g. louvers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/12—Fins with U-shaped slots for laterally inserting conduits

Definitions

  • This invention relates to the evaporator units used in cooler-type white goods.
  • Evaporator units are the systems provided in cooler-type white goods and used during heat exchange thereof with the internal environment. Refrigerant gas is passed through the bent tubes of the evaporator units; the heat received from the cooling chamber of the white goods is transferred to the refrigerant gas by means of the fins that are in contact with the tube. For this reason, the cold gas entering into the evaporator unit gets warm after it leaves the unit.
  • a great number of fins heat transfer plate
  • the tube and fin material are made of aluminium and copper, the heat transmission coefficient of which are generally high. However, the high-cost of these materials is unfavorable for the manufacturers. Additionally, the bent tubes made of these materials are formed in cross (zigzag) sequential bends. For instance, in the published patent documents no US4580623 and US6591627 , cross sequentially formed evaporator tubes are shown. However, bending the evaporator tubes into zigzag shape and attaching fins thereon require difficult and costly production methods.
  • the materials such as steel, which have lower heat transmission coefficient in comparison with aluminium and copper are also used.
  • the desired cooling effectiveness must be ensured without any loss in the amount of heat transfer. Therefore, an evaporator unit (A) which is both structurally and in terms of the material used therein different from the prior art has been developed.
  • the evaporator unit of the invention developed for cooler-type white goods comprises an evaporator tube consisting of two lines each of which has continual sequential bends; plate-shaped fins on the evaporator tube that are arranged in succession.
  • the unit is characterized in that each line of the tube is within itself while all the parts are sequentially on the same virtual plane; and in that there are protrusions on each fin which keep the fins at parallel regular intervals with respect to each other and which are used for heat transfer; and in that there are a great number of slots at the each side of the fin plate into which tube lines can laterally enter.
  • the aim of the invention is to form an easy-to-manufacture, cost-effective and reliable evaporator unit for cooler-type white goods.
  • Another aim of the invention is to ensure that straight bent evaporator tubes which are made of steel are used in the said unit.
  • a further aim of the invention is to form fins which can be easily attached onto the evaporator tubes of the said unit and which lead to an increase in heat transfer by means of the protrusions thereon.
  • Another aim of the invention is to ensure that the assembly of the evaporator tube to the fins on the unit is facilitated.
  • FIG 1 shows the perspective view of sample evaporator unit (A') of the prior art.
  • the evaporator tube (1') used herein is formed cross (zigzag) sequence and the fins (2') (heat transfer plates) thereon are shown.
  • the reason as to why the evaporator tube (1') is cross sequenced is to constitute certain barriers before the air flow which rises from bottom to top due to convection. Therefore it is ensured that the air flow stays in contact with the cross sequenced tubes for longer time, resulting increase in the heat transfer. Nevertheless, such tube bending requires a difficult and costly process. It is also difficult and costly to assemble the cross sequenced tubes (1') with a fin (2') structure as shown in Figure 1 .
  • this structure is aimed for materials which have high heat transmission coefficients (i.e. copper, aluminium) and it does not allow the use of materials that have low heat transmission coefficients (such as steel).
  • the invention shown in Figures 2-5 allows the use of materials (i.e. steel), which have lower heat transmission coefficient with respect to copper and aluminium, in the evaporator unit (A).
  • Low carbon steels are especially preferred for cost-effectiveness. Low carbon steels are more advantageous when compared to copper and aluminium with respect to raw materials and processing/shaping costs. Nonetheless, it is required that with the use of materials of steel-type or the materials which have lower heat transmission coefficients than copper and aluminium (the unit (A) can be used with any kind of material that has heat conductivity), the desired cooling effectiveness must be ensured without any loss in the amount of heat transfer. Therefore, an evaporator unit (A), which is both structurally and in terms of the material used therein different from the prior art, has been developed.
  • the evaporator tube (1) in this unit (A) consists of two lines (I, II) each of which continues with sequential bends. Both of the lines (I, II) are shaped with multiple bends (5) on the same virtual plane (D). In other words, it is ensured that each line (I, II) of the tube (1) remains within itself and all the parts of the tube are sequentially on the same plane (D) (shown in Figure 5 ) following the bending process.
  • the planes (D) on which the each line (I, II) of the tube (1) is placed are also parallel to each other.
  • protrusions (3) extending outwards on the plate-shaped fins (2).
  • these protrusions (3) ensures that fins (2) are kept at certain intervals from each other in a parallel fashion with respect to each other.
  • these protrusions (3) constitute barriers to some extent before the air flow (F) which rises upward due to convection. This causes the air flow (F) to create turbulence while it passes through the evaporator unit (A); and turbulence leads to an increase in heat transmission coefficient.
  • the increase in the heat transmission coefficient between air and the evaporator unit (A) naturally increases the amount of heat transfer.
  • the said protrusions (3) ensure that the air keeps in contact with the fins (2) for a longer time and they also ensure that the air is directed onto the tube (1). While the protrusions (3) can be formed with the fins (2) in an assembled manner; for the sake of simple production, they can also preferably be formed by bending certain areas in the interior part of the fin (2) plate laterally.
  • each fin (2) plate there are a great number of slots (4) into which tube lines (I, II) can laterally enter.
  • tube lines (I, II) can laterally enter.
  • both tube lines (I, II) can be joined (e.g. by welding on the joining area (6) shown in Figure 2 ). This facilitates the mounting of the evaporator tubes (1) to the fin (2) plates in the unit (A) and ensures that the evaporator unit (A) is manufactured easily and rapidly.
  • the evaporator unit (A) embodied with the invention it is possible to use steel material in tubes (1) and/or fins (2). With this cost-effective use by increasing the amount of heat transfer by means of the protrusions on the fins (2), it is possible to deliver the same performance of the former evaporators made of copper and aluminium. Owing to the slots (4) on the fin (2) plate, engagement of tube (1) and fin (2) is facilitated as well. This is also an important factor in reducing the production cost.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP10172987A 2009-10-23 2010-08-17 Unité d'évaporateur Withdrawn EP2317252A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR2009/08059A TR200908059A2 (tr) 2009-10-23 2009-10-23 Evaporatör ünitesi

Publications (2)

Publication Number Publication Date
EP2317252A2 true EP2317252A2 (fr) 2011-05-04
EP2317252A3 EP2317252A3 (fr) 2012-05-30

Family

ID=42795282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10172987A Withdrawn EP2317252A3 (fr) 2009-10-23 2010-08-17 Unité d'évaporateur

Country Status (2)

Country Link
EP (1) EP2317252A3 (fr)
TR (1) TR200908059A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104006680A (zh) * 2014-05-30 2014-08-27 汤玉冰 一种蒸汽发生器的换热器和蒸汽发生器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4580623A (en) 1984-10-02 1986-04-08 Inglis Limited Heat exchanger
US6591627B1 (en) 2002-05-22 2003-07-15 Whirlpool Corporation Flush mount wet loop for use with condenser coils

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2023739A (en) * 1935-02-14 1935-12-10 Bush Mfg Company Radiator
US2540339A (en) * 1948-06-14 1951-02-06 Richard W Kritzer Heat exchange unit
JPH0996473A (ja) * 1995-09-29 1997-04-08 Showa Alum Corp 熱交換器
JP2001091179A (ja) * 1999-09-20 2001-04-06 Mitsubishi Electric Corp プレートフィンチューブ型熱交換器およびその製造方法とそれを用いた冷蔵庫
US6793012B2 (en) * 2002-05-07 2004-09-21 Valeo, Inc Heat exchanger
JP4300508B2 (ja) * 2002-12-25 2009-07-22 株式会社ティラド 熱交換器用プレートフィンおよび熱交換器コア
JP4520774B2 (ja) * 2003-12-15 2010-08-11 臼井国際産業株式会社 熱交換器
WO2009046565A1 (fr) * 2007-10-08 2009-04-16 Weidong Chen Échangeur thermique à tuyau en feuille en alliage en acier inoxydable à ailettes et procédé de fabrication associé

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4580623A (en) 1984-10-02 1986-04-08 Inglis Limited Heat exchanger
US6591627B1 (en) 2002-05-22 2003-07-15 Whirlpool Corporation Flush mount wet loop for use with condenser coils

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104006680A (zh) * 2014-05-30 2014-08-27 汤玉冰 一种蒸汽发生器的换热器和蒸汽发生器
CN104006680B (zh) * 2014-05-30 2015-11-04 汤玉冰 一种蒸汽发生器的换热器和蒸汽发生器

Also Published As

Publication number Publication date
TR200908059A2 (tr) 2010-04-21
EP2317252A3 (fr) 2012-05-30

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