JP2004085169A - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
JP2004085169A
JP2004085169A JP2003009662A JP2003009662A JP2004085169A JP 2004085169 A JP2004085169 A JP 2004085169A JP 2003009662 A JP2003009662 A JP 2003009662A JP 2003009662 A JP2003009662 A JP 2003009662A JP 2004085169 A JP2004085169 A JP 2004085169A
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JP
Japan
Prior art keywords
fins
fin
heat exchanger
water
treated
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.)
Pending
Application number
JP2003009662A
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Japanese (ja)
Inventor
Cheol-Soo Ko
コ　チョル−ソー
Se-Yoon Oh
オー　セ−ヨーン
Sai-Kee Oh
オー　サイ−ケー
Yong-Cheol Sa
サ　ヨン−チョル
Dong-Yeon Jang
ジャン　ドン−ヨン
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LG Electronics Inc
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LG Electronics Inc
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Publication of JP2004085169A publication Critical patent/JP2004085169A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F17/00—Removing ice or water from heat-exchange apparatus
    • 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
    • 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
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/04—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by preventing the formation of continuous films of condensate on heat-exchange surfaces, e.g. by promoting droplet formation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments
    • F28F2245/02—Coatings; Surface treatments hydrophilic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments
    • F28F2245/04—Coatings; Surface treatments hydrophobic

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  • 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)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchanger having a similar heat exchange performance and reducing a size by enhancing a heat transfer performance to reduce a distance between fins by coating the surfaces of the respective fins with a predetermined substance and more smoothly discharging condensate deposited on the surfaces of the fins. <P>SOLUTION: The heat exchanger includes fins 10 arranged with a predetermined gap and passed with air; and a tube 6 installed between the fins and passing the fluid. The heat exchanger is constituted such that the fins 10 are arranged with one side surface subjected to a surface treatment by a hydrophilic substance and the other side surface subjected to a surface treatment by a water repellent substance opposed to each other with a predetermined gap. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、熱交換器に係るもので、詳しくは、熱交換作用時に発生される凝縮水の排出を円滑にして熱交換性能を向上し得る熱交換器に関するものである。
【０００２】
【従来の技術】
一般に、熱交換器は、相互相違な二つの流体を直接又は間接的に接触させて熱交換させる装置であって、加熱器、冷却機、蒸発器及び凝縮器等に主に使われる。
前記熱交換器において、冷凍機及び空調機に主に使われる熱交換器は、フィンアンドチューブ式が主に使われる。
従来の熱交換器は、図５及び図６に示したように、所定間隔を置いて配列される複数のフィン１０２と、それらフィン１０２間を貫通して設置されて流体が通過するチューブ１０４と、を包含して構成されていた。
【０００３】
前記各フィン１０２は、所定長さ及び幅を有する板タイプで、前記チューブ１０４が通過する複数の貫通ホール１０８が形成され、その伝熱面積を広げるために所定角に折曲されるルーバー１０６が形成される。
又、前記チューブ１０４は、一方側の端部が流体が流入される流入管１１０に連結され、他方側の端部は、熱交換を完了した流体が排出される排出管１１２に連結され、前記フィン１０２の貫通ホール１０８をジグザグに通過するように複数回折曲される形態を有する。
【０００４】
このように構成された従来の熱交換器は、前記流入管１１０を通して流体が流入されると、ジグザグ状に折曲された前記チューブ１０４を通過しながら前記フィン１０２間を通過する空気との熱交換が行われる。この時、前記フィン１０２により前記チューブ１０４の外部を通過する空気と前記チューブ１０４の内部を通過する流体間の熱交換が円滑に行われる。
このような熱交換作用中、前記チューブ１０４の内外側温度差によって空気中に含まれていた水分が前記チューブ１０４の表面及びフィン１０２の表面に付着され、該付着された水分は、重力により下方向に移動してドレインパン（図示されず）に集められて外部に排出される。
【０００５】
【発明が解決しようとする課題】
然るに、このような従来の熱交換器においては、前記熱交換作用中、発生された凝縮水がフィン１０２の表面に表面張力により残留する現象が発生するため、フィン１０２間を通過する空気の流動を妨害し、前記フィン１０２の表面に凝縮水が付着されることで、空気と流体間の熱交換性能が低下するという不都合な点があった。
また、前記フィン１０２間の空気が通過する空間に凝縮水が停滞される現象を防止するためにフィン間の距離が所定以上に維持されなければならないため、熱交換器の大きさが大きくなるという不都合な点があった。
【０００６】
本発明は、このような従来の課題に鑑みてなされたもので、各フィンの表面を所定物質によりコーティング処理して各フィンの表面に付着された凝縮水が一層円滑に排出されるため、熱伝逹性能を向上させてフィン間の距離を低減し得ることで、同様な熱交換性能を有すると共に、大きさを低減し得る熱交換器を提供することを目的とする。
【０００７】
【課題を解決するための手段】
このような目的を達成するため、本発明に係る熱交換器においては、所定間隔を置いて配列されて空気が通過する各フィンと、それらフィン間を通過するように設置されて流体が通過するチューブと、を包含して構成され、前記各フィンは、親水性物質が表面処理された一方側面と撥水性物質が表面処理された他方側面とが夫々所定間隔を置いて対向して配列されることを特徴とする。
【０００８】
又、本発明に係る熱交換器においては、前記各フィンは、両方側の表面が夫々撥水性物質により表面処理された第１フィンと、該第１フィンと対向されるように配置されてその両方側の表面に夫々親水性物質により表面処理された第２フィンと、が夫々順次配列されることを特徴とする。
又、前記熱交換器の前記第１フィンの両方側の表面には、夫々撥水性物質が塗布されて第１コーティング層が形成され、前記第２フィンの両方側の表面には、夫々親水性物質が塗布されて第２コーティング層が形成されることを特徴とする。
【０００９】
又、前記熱交換器の前記各フィンは、一方側の表面が撥水性物質により表面処理され、他方側の表面は、親水性物質により表面処理され、前記撥水性物質が表面処理された一方側の表面と前記親水性物質が表面処理された他方側の表面が所定間隔を置いて夫々対向するように配列されることを特徴とする。
又、前記熱交換器の前記各フィンの一方側の表面は、撥水性物質が塗布されて第１コーティング層が形成され、他方側の表面は、親水性物質が塗布されて第２コーティング層が形成されることを特徴とする。
【００１０】
【発明の実施の形態】
以下、本発明の実施の形態に対し、図面を用いて説明する。
本発明に係る熱交換器においては、図１に示したように、一方側に流体が流入する流入管２が連結され、他方側に熱交換が完了された流体が排出される吐出管４が連結されて所定間隔を置いてジグザグに折曲されて流体が通過するチューブ６と、該チューブ６が通過するように複数の貫通ホール８が形成されて所定間隔を置いて複数に配列されて空気との接触面積を拡張させるフィン１０と、を包含して構成されている。
【００１１】
又、前記フィン１０は、所定長さ及び幅を有する板状に形成され、その両方側の側面に夫々通過する空気との接触面積を拡張するために所定角度に突出されるルーバー１２が形成され、その両方側の表面には、夫々凝縮水を一層容易に排出させるために、撥水性物質及び親水性物質が夫々表面処理される。
即ち、前記フィン１０は、図２に示したように、その両方側の表面に夫々撥水性物質により表面処理されて第１コーティング層２６を形成した第１フィン２０と、該第１フィン２０と対向されるように配置されてその両方側の表面に夫々親水性物質により表面処理されて第２コーティング層２８を形成した第２フィン２２と、が夫々順次的に配列される。
【００１２】
又、前記親水性物質は、一般的に前記水との親和性が強い物質であって、前記フィン１０の表面に凝縮水を一層容易に吸着させる機能をする。前記撥水性物質は、水と反発する物質であって、前記フィン１０の表面に凝縮水が吸着されないようにする機能をする。
又、前記撥水性物質及び親水性物質は、夫々フィン１０の表面にコーティング方法により表面処理することが好ましい。
【００１３】
以下、上記のように構成される本発明に係る熱交換器の動作に対し、説明する。
前記流入管２に流入された流体は、ジグザグ状に折曲された前記チューブ６を通過して排出管４を通して排出される。又、前記フィン１０間に空気が通過する。この時、前記チューブ６を通過する流体と前記フィン１０間を通過する空気が相互直交して流れながら相互熱交換が行われる。
このような熱交換作用を実施する時、前記チューブ６を通過する流体とフィン６間を通過する空気との温度差により空気中に含まれていた水分がチューブ６の表面及びフィン１０の表面に付着される。
【００１４】
以下、前記凝縮水が前記フィン１０の表面に付着されて排出される過程に対し、図３を用いて説明する。
熱交換が実施されると、撥水性物質が表面処理されて第１コーティング層２６が形成された第１フィン２０の両方側の表面に夫々凝縮水が水滴粒子Ｌ状に凝縮され、該水滴粒子Ｌ状の凝縮水は、時間が経過することで、他の水滴粒子と結合されて順次的に大きくなり、前記水滴粒子Ｌが所定以上大きくなると、前記第１フィン２２と所定間隔を置いて配列された親水性材料が表面処理されて第２コーティング層が形成された第２フィン２２の表面に接すると、瞬間的に前記第２フィン２２の表面に沿って広がりながら下方向に流れる。この時、前記水滴粒子Ｌの重さが重いため、前記凝縮水が第２フィン２２の表面に流れる速度が速くなることで、凝縮水を迅速に除去することができる。
【００１５】
又、前記第１フィン２０の表面で生成される凝縮水が第２フィン２２の表面に接すると、直ちに排出されるため、水滴粒子Ｌの大きさに関係無く、排出が行われるため、前記第１フィン２０と第２フィン２２間の距離を狭めることで、熱交換器の全体的な大きさが低減する。
【００１６】
又、本発明に係る熱交換器の他の実施形態においては、図４の如く、所定間隔を置いてジグザグに折曲されるように形成されて流体が通過するチューブ６と、該チューブ６が通過するように複数の貫通ホール８が形成されて所定間隔を置いて複数配列されて空気との接触面積を拡張させる各フィン３０と、を包含して構成され、それらフィン３０は、夫々その一方側面に撥水性物質が表面処理されて第１コーティング層３２を形成し、他側面は、親水性物質が表面処理されて第２コーティング層３４を形成して所定間隔を置いて複数配列される。
【００１７】
この時、前記フィン３０は、前記撥水性物質が表面処理されて第１コーティング層３２が形成された側面と親水性材料が表面処理されて第２コーティング層３４が形成された他側面とが対向するように配列される。
【００１８】
上記のように構成される本発明に係る熱交換器の他の実施形態の凝縮水排出過程は、先ず、撥水性物質が表面処理されて第１コーティング層３２が形成されたフィン３０の一方側の表面に夫々凝縮水が水滴粒子状に凝縮され、該水滴粒子状の凝縮水は、時間が経過することで、他の水滴粒子と結合しながら順次的に大きくなり、前記水滴粒子が所定以上大きくなると、親水性材料が表面処理されて第２コーティング層３４が形成された前記フィン３０の他方側の表面に接すると、瞬間的に前記フィン３０の他方側の表面を沿って広がりながら下方向に速く流れる。
【００１９】
【発明の効果】
以上説明したように、本発明に係る熱交換器においては、熱交換器のフィンの両方側の表面に夫々撥水性材料及び親水性材料を表面処理し、撥水性材料が表面処理された面と親水性材料が表面処理された面とを対向するように配置して熱交換作用時に発生される凝縮水が前記撥水性材料が表面処理されたフィンの一方側の表面に水滴粒子状に生成されて前記親水性材料が表面処理されたフィンの他方側の表面に接すると、瞬間的に下方向に排出されることで、凝縮水の重さにより凝縮水の排出速度は速くなり凝縮水を迅速に排出させることで、フィン間を通過する空気の流動を円滑にし得るし、前記フィンの表面に付着される凝縮水の時間を低減し得ることで、熱交換性能を向上し得るという効果がある。
また、前記水滴粒子状の大きさに関係なく、凝縮水の排出が容易に行われるため、前記フィン間の距離を狭めて全体熱交換器の大きさを低減し得るという効果がある。
【図面の簡単な説明】
【図１】本発明に係る熱交換器を示した斜視図である。
【図２】図１のＩＩＩ−ＩＩＩ線の断面図である。
【図３】本発明に係る熱交換器の凝縮水排出過程を示した部分断面図である。
【図４】本発明に係る熱交換器の他の実施形態を示した斜視図である。
【図５】従来の熱交換器を示した斜視図である。
【図６】従来の熱交換器のフィンを示した平面図である。
【符号の説明】
２…流入管
４…吐出管
６…チューブ
８…貫通ホール
１０…フィン
１２…ルーバー
２０…第１フィン
２２…第２フィン
２６…第１コーティング層
２８…第２コーティング層[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heat exchanger, and more particularly, to a heat exchanger capable of improving heat exchange performance by smoothly discharging condensed water generated during a heat exchange operation.
[0002]
[Prior art]
2. Description of the Related Art Generally, a heat exchanger is a device for exchanging heat by directly or indirectly contacting two different fluids, and is mainly used for a heater, a cooler, an evaporator, a condenser, and the like.
In the heat exchanger, a fin and tube type heat exchanger is mainly used for a refrigerator and an air conditioner.
As shown in FIGS. 5 and 6, a conventional heat exchanger includes a plurality of fins 102 arranged at a predetermined interval, and a tube 104 which is disposed between the fins 102 and through which a fluid passes. , And was comprised.
[0003]
Each of the fins 102 is a plate type having a predetermined length and width, and has a plurality of through holes 108 through which the tubes 104 pass, and a louver 106 which is bent at a predetermined angle in order to increase the heat transfer area. It is formed.
The tube 104 has one end connected to an inflow pipe 110 through which a fluid flows, and the other end connected to an exhaust pipe 112 through which a heat-exchanged fluid is discharged. The fin 102 is bent a plurality of times so as to pass through the through hole 108 of the fin 102 in a zigzag manner.
[0004]
In the conventional heat exchanger configured as described above, when the fluid flows through the inflow pipe 110, the heat exchange with the air passing between the fins 102 while passing through the zigzag bent tube 104 is performed. An exchange takes place. At this time, heat exchange between the air passing through the outside of the tube 104 and the fluid passing through the inside of the tube 104 is smoothly performed by the fins 102.
During such a heat exchange operation, the moisture contained in the air is attached to the surface of the tube 104 and the surface of the fins 102 due to the temperature difference between the inside and outside of the tube 104, and the attached moisture is reduced by gravity. And is collected in a drain pan (not shown) and discharged to the outside.
[0005]
[Problems to be solved by the invention]
However, in such a conventional heat exchanger, during the heat exchange operation, the generated condensed water remains on the surface of the fins 102 due to surface tension. And the condensed water adheres to the surface of the fin 102, thereby deteriorating the heat exchange performance between the air and the fluid.
In addition, the distance between the fins must be maintained at a predetermined value or more in order to prevent the condensed water from stagnating in the space through which the air passes between the fins 102, so that the size of the heat exchanger increases. There were disadvantages.
[0006]
The present invention has been made in view of such a conventional problem, and since the surface of each fin is coated with a predetermined substance and condensed water adhered to the surface of each fin is more smoothly discharged, heat It is an object of the present invention to provide a heat exchanger having the same heat exchange performance and a reduced size by improving the transfer performance and reducing the distance between the fins.
[0007]
[Means for Solving the Problems]
In order to achieve such an object, in the heat exchanger according to the present invention, the fins are arranged at predetermined intervals through which air passes, and the fins are installed so as to pass between the fins and the fluid passes therethrough. A tube, and the fins are arranged such that one side surface of which the hydrophilic material is surface-treated and the other side surface of which the water-repellent material is surface-treated are opposed to each other at a predetermined interval. It is characterized by the following.
[0008]
Further, in the heat exchanger according to the present invention, each of the fins is disposed so that both surfaces thereof are first fins each of which is surface-treated with a water-repellent substance, and are disposed so as to face the first fins. The second fins, each of which is surface-treated with a hydrophilic substance, are sequentially arranged on both surfaces.
Further, a water-repellent material is applied to both surfaces of the first fin of the heat exchanger to form a first coating layer, and hydrophilic surfaces are formed on both surfaces of the second fin. The material may be applied to form a second coating layer.
[0009]
Further, each of the fins of the heat exchanger has one surface subjected to a surface treatment with a water repellent material, the other surface treated with a hydrophilic material, and one surface treated with the water repellent material. And the other surface on which the hydrophilic substance is surface-treated is arranged so as to face each other at a predetermined interval.
A surface of one side of each fin of the heat exchanger is coated with a water-repellent substance to form a first coating layer, and a surface of the other side is coated with a hydrophilic substance to form a second coating layer. It is characterized by being formed.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the heat exchanger according to the present invention, as shown in FIG. 1, the inflow pipe 2 into which fluid flows in is connected to one side, and the discharge pipe 4 from which the heat-exchanged fluid is discharged is connected to the other side. A tube 6 that is connected and bent in a zigzag manner at a predetermined interval through which a fluid passes, and a plurality of through holes 8 are formed so that the tube 6 passes therethrough, and a plurality of air holes are arranged at a predetermined interval and air And a fin 10 for extending a contact area with the fin 10.
[0011]
Further, the fin 10 is formed in a plate shape having a predetermined length and width, and a louver 12 protruding at a predetermined angle is formed on both side surfaces of the fin 10 in order to expand a contact area with air passing therethrough. The surfaces on both sides are respectively treated with a water-repellent substance and a hydrophilic substance in order to discharge condensed water more easily.
That is, as shown in FIG. 2, the fin 10 has a first coating layer 26 formed on both surfaces thereof by a surface treatment with a water-repellent substance, The second fins 22 which are arranged so as to face each other and whose both surfaces are surface-treated with a hydrophilic substance to form the second coating layer 28 are sequentially arranged.
[0012]
In addition, the hydrophilic substance generally has a strong affinity for the water, and functions to more easily adsorb condensed water on the surface of the fin 10. The water repellent material is a material that repels water and functions to prevent condensed water from adsorbing on the surface of the fin 10.
It is preferable that the surface of the fin 10 is subjected to a surface treatment by a coating method with respect to the water repellent substance and the hydrophilic substance.
[0013]
Hereinafter, the operation of the heat exchanger according to the present invention configured as described above will be described.
The fluid flowing into the inflow pipe 2 passes through the zigzag bent tube 6 and is discharged through the discharge pipe 4. Air passes between the fins 10. At this time, mutual heat exchange is performed while the fluid passing through the tube 6 and the air passing between the fins 10 flow orthogonally.
When such a heat exchange action is performed, moisture contained in the air due to the temperature difference between the fluid passing through the tube 6 and the air passing between the fins 6 is deposited on the surface of the tube 6 and the surface of the fin 10. Is attached.
[0014]
Hereinafter, a process in which the condensed water adheres to the surface of the fin 10 and is discharged will be described with reference to FIG.
When the heat exchange is performed, the condensed water is condensed into water droplet particles L on both surfaces of the first fin 20 on which the water repellent material is subjected to the surface treatment and the first coating layer 26 is formed. As the time elapses, the L-shaped condensed water is combined with other water droplet particles and sequentially increases in size. When the water droplet particles L become larger than a predetermined size, they are arranged at a predetermined distance from the first fin 22. When the treated hydrophilic material comes into contact with the surface of the second fin 22 on which the second coating layer is formed by the surface treatment, the hydrophilic material instantaneously spreads along the surface of the second fin 22 and flows downward. At this time, since the weight of the water droplet particles L is heavy, the speed at which the condensed water flows on the surface of the second fin 22 is increased, so that the condensed water can be quickly removed.
[0015]
In addition, the condensed water generated on the surface of the first fin 20 is immediately discharged when it comes into contact with the surface of the second fin 22, and is discharged regardless of the size of the water droplet particles L. Reducing the distance between the first fin 20 and the second fin 22 reduces the overall size of the heat exchanger.
[0016]
Further, in another embodiment of the heat exchanger according to the present invention, as shown in FIG. 4, a tube 6 formed so as to be bent in a zigzag manner at a predetermined interval and through which a fluid passes, A plurality of through holes 8 formed so as to pass therethrough, and a plurality of fins 30 arranged at predetermined intervals to extend the contact area with the air. The first coating layer 32 is formed by treating the surface of the water-repellent material on the side surface, and the second coating layer 34 is formed on the other side surface by treating the surface of the hydrophilic material with a hydrophilic material.
[0017]
At this time, the side of the fin 30 on which the first coating layer 32 is formed by the surface treatment of the water-repellent substance is opposed to the other side of the fin 30 on which the second coating layer 34 is formed by the surface treatment of the hydrophilic material. It is arranged to be.
[0018]
The condensed water discharging process of another embodiment of the heat exchanger according to the present invention configured as described above is performed by first treating one side of the fin 30 on which the water-repellent substance is surface-treated to form the first coating layer 32. The condensed water is condensed in the form of water droplets on the surface of each of the water droplets, and the condensed water in the form of water droplets gradually becomes larger while being combined with other water droplet particles over time, and the water droplet particles become larger than a predetermined amount. When it becomes large, when the hydrophilic material is surface-treated and comes into contact with the other surface of the fin 30 on which the second coating layer 34 is formed, the fin 30 instantaneously spreads along the other surface of the fin 30 in the downward direction. Flows fast.
[0019]
【The invention's effect】
As described above, in the heat exchanger according to the present invention, the surfaces of both sides of the fins of the heat exchanger are subjected to the surface treatment with the water-repellent material and the hydrophilic material, respectively, and the surface of the water-repellent material is subjected to the surface treatment. Condensed water generated at the time of heat exchange by arranging the surface on which the hydrophilic material has been subjected to the surface treatment is generated in the form of water droplets on one surface of the fin on which the water-repellent material has been surface-treated. When the hydrophilic material comes in contact with the surface of the other side of the surface-treated fins, the fin is instantaneously discharged downward. By discharging the air to the fins, the flow of air passing between the fins can be smoothed, and the time of condensed water attached to the surface of the fins can be reduced, thereby improving heat exchange performance. .
In addition, since the condensed water is easily discharged irrespective of the size of the water droplet particles, the distance between the fins can be reduced to reduce the size of the entire heat exchanger.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a heat exchanger according to the present invention.
FIG. 2 is a sectional view taken along line III-III in FIG.
FIG. 3 is a partial cross-sectional view illustrating a condensed water discharging process of the heat exchanger according to the present invention.
FIG. 4 is a perspective view showing another embodiment of the heat exchanger according to the present invention.
FIG. 5 is a perspective view showing a conventional heat exchanger.
FIG. 6 is a plan view showing fins of a conventional heat exchanger.
[Explanation of symbols]
2 inflow pipe 4 discharge pipe 6 tube 8 through hole 10 fin 12 louver 20 first fin 22 second fin 26 first coating layer 28 second coating layer

Claims (5)

所定間隔を置いて配列されて空気が通過する各フィンと、
それらフィン間を通過するように設置されて流体が通過するチューブと、を包含して構成され、
前記各フィンは、親水性物質が表面処理された一方側面と撥水性物質が表面処理された他側面とが夫々所定間隔を置いて対向するように配列されることを特徴とする熱交換器。Each fin that is arranged at a predetermined interval and through which air passes,
A tube installed to pass between the fins and through which fluid passes,
The heat exchanger according to claim 1, wherein each of the fins is arranged such that one side surface of the fin treated with the hydrophilic material and the other side surface of the fin treated with the water repellent material face each other at a predetermined interval. 前記各フィンは、その両方側の表面が夫々撥水性物質により表面処理された第１フィンと、該第１フィンと対向されるように配置されてその両方側の表面に夫々親水性物質により表面処理された第２フィンと、が夫々順次的に配列されることを特徴とする請求項１記載の熱交換器。Each of the fins has a first fin whose both surfaces are surface-treated with a water-repellent material, and a fin which is disposed so as to face the first fin and has a hydrophilic material on both surfaces thereof. 2. The heat exchanger according to claim 1, wherein the processed second fins are sequentially arranged. 前記第１フィンの両方側の表面には、夫々撥水性物質が塗布されて第１コーティング層が形成され、前記第２フィンの両方側の表面には、夫々親水性物質が塗布されて第２コーティング層が形成されることを特徴とする請求項２記載の熱交換器。A water repellent material is applied to both surfaces of the first fin to form a first coating layer, and a hydrophilic material is applied to both surfaces of the second fin to form a second coating layer. The heat exchanger according to claim 2, wherein a coating layer is formed. 前記各フィンは、その一方側の表面が撥水性物質により表面処理され、その他方側の表面は、親水性物質により表面処理されて、前記撥水性物質が表面処理された一方側の表面と前記親水性物質が表面処理された他方側の表面とが所定間隔を置いて夫々対向するように配列されることを特徴とする請求項１記載の熱交換器。Each of the fins has one surface thereof surface-treated with a water-repellent material, and the other surface thereof is surface-treated with a hydrophilic material. 2. The heat exchanger according to claim 1, wherein the hydrophilic material is arranged so as to face each other at a predetermined interval with respect to the other surface of the heat treated surface. 前記各フィンの一方側の表面は、撥水性物質が塗布されて第１コーティング層が形成され、他方側の表面は、親水性物質が塗布されて第２コーティング層が形成されることを特徴とする請求項４記載の熱交換器。One surface of each fin is coated with a water-repellent material to form a first coating layer, and the other surface is coated with a hydrophilic material to form a second coating layer. The heat exchanger according to claim 4, wherein
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