JPH02122198A - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JPH02122198A JPH02122198A JP27488588A JP27488588A JPH02122198A JP H02122198 A JPH02122198 A JP H02122198A JP 27488588 A JP27488588 A JP 27488588A JP 27488588 A JP27488588 A JP 27488588A JP H02122198 A JPH02122198 A JP H02122198A
- Authority
- JP
- Japan
- Prior art keywords
- water
- fin
- frost
- heat exchanger
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000004381 surface treatment Methods 0.000 claims abstract description 6
- 239000005871 repellent Substances 0.000 claims description 15
- 230000002940 repellent Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 239000010410 layer Substances 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 abstract description 5
- 239000010949 copper Substances 0.000 abstract description 5
- 230000000717 retained effect Effects 0.000 abstract description 3
- 239000002335 surface treatment layer Substances 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007788 roughening Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- -1 lauric acid Chemical class 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、空調機器、冷凍冷蔵機器などの冷却システム
に使用される熱交換器に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a heat exchanger used in cooling systems such as air conditioning equipment, freezing and refrigeration equipment, and the like.
従来の技術
近年、空調機器においては冷暖房機種いわゆるヒートポ
ンプが年々増加し、暖房運転時の室外側熱交換器への着
霜が問題となってきている。又、冷凍冷蔵機器において
も同様の問題を抱えておシ、熱交換器そのものの着霜対
策が切望されている。BACKGROUND OF THE INVENTION In recent years, the number of air conditioning equipment, so-called heat pumps, has been increasing year by year, and frost formation on outdoor heat exchangers during heating operation has become a problem. In addition, similar problems occur in freezing and refrigerating equipment, and there is a strong need for measures against frosting of the heat exchanger itself.
２ ページ
以下図面を参照しながら従来の熱交換器の一例について
説明する。第３図は、従来の熱交換器の一部側面断面図
を、第４図は正面断面図を示す。An example of a conventional heat exchanger will be described below with reference to the drawings on page 2. FIG. 3 shows a partial side sectional view of a conventional heat exchanger, and FIG. 4 shows a front sectional view.
鉄、銅、アルミニウム等金属薄板である板状フィン１に
、伝熱管挿通孔を穿設すると共にフィンカラー２を等間
隔に立ち上げ、これに銅、アルミニウム等の金属管であ
る伝熱管３を挿通後、拡管等の手段によシ板状フィン１
に密着固定しである。Heat exchanger tube insertion holes are bored in a plate-shaped fin 1 made of a thin metal plate such as iron, copper, or aluminum, and fin collars 2 are set up at equal intervals, and heat exchanger tubes 3 made of metal such as copper or aluminum are inserted into the plate-like fins 1. After insertion, the plate-like fin 1 is removed by means such as tube expansion.
It is tightly fixed.
伝熱管３内部に冷媒を流動させ、その熱を伝熱管３に密
着・固定されたフィンカラー２からフィン１に伝えられ
る。一方、白抜き矢印４方向よシ気体を流動させフィン
１上を通過する際に気体と伝熱管３とフィン１との温度
差によシ熱の授受が行われ、この作用によシ冷媒と気体
との熱交換が連続的に行われるものである。A refrigerant is made to flow inside the heat exchanger tube 3, and the heat is transmitted to the fins 1 from the fin collar 2 which is closely attached and fixed to the heat exchanger tube 3. On the other hand, when the gas flows in the four directions of the white arrows and passes over the fins 1, heat is exchanged due to the temperature difference between the gas, the heat transfer tubes 3, and the fins 1, and this action causes the refrigerant to Heat exchange with gas is performed continuously.
発明が解決しようとする課題
上記作用の中で、ヒートポンプの暖房運転時の室外側熱
交換器を例に取れば、白抜き矢印４方向よりの流入気体
の温度が低い場合、熱交換器の内部を流動する冷媒の蒸
発温度がｏ ”ｃ以下となシ、３ ベーン
フィン表面や伝熱管周りのフィンカラ一部にまず凝縮水
が発生する。フィン表面が親水性の場合は、その凝縮水
は膜状となり、早期に氷結し、運転時間と共に着霜が進
み、霜が成長するにつれ、フィン間が目詰ｔ、ｂし、気
体の流動抵抗となシ、熱交換器の通風抵抗を招き、ひい
ては空気と冷媒との熱交換を妨げる。又、フィン表面が
撥水性の場合は、その凝縮水は液滴状となり、フィン表
面温度がかなり低下しても液滴の状態で、比較的長時間
保持される。この液滴の密度は、霜と比較し、数倍大き
い。しかしこの液滴もやがては氷結し、その後、空気中
の水分が霜として成長する。この際、霜は氷結水上に集
中して成長するため、氷結水１ケ所当シの霜成長は大き
く、霜高さ増加も著しく、フィンの目詰まりに至る。従
って、フィン表面が、親水性、撥水性いずれの場合も、
暖房運転を中断して逆サイクル等の手段によシ除霜運転
を行なうべき回数は頻繁となる。Problems to be Solved by the Invention Among the above effects, taking as an example an outdoor heat exchanger during heating operation of a heat pump, when the temperature of the inflowing gas from the four directions of the white arrows is low, the inside of the heat exchanger If the evaporation temperature of the refrigerant flowing through the refrigerant is below 3, condensed water will first be generated on the vane fin surface and a part of the fin collar around the heat transfer tube.If the fin surface is hydrophilic, the condensed water will form a film. As the frost builds up and grows over time, the space between the fins becomes clogged, creating resistance to gas flow, leading to ventilation resistance in the heat exchanger, and eventually causing air flow. In addition, if the fin surface is water repellent, the condensed water becomes droplets and remains in the form of droplets for a relatively long time even if the fin surface temperature drops considerably. The density of these droplets is several times greater than that of frost. However, these droplets eventually freeze, and then the moisture in the air grows as frost. At this time, the frost is concentrated on the frozen water. As a result, the frost growth on a single piece of frozen water is large, and the frost height increases significantly, leading to clogging of the fins.Therefore, regardless of whether the fin surface is hydrophilic or water-repellent,
The number of times heating operation must be interrupted and defrosting operation performed by means such as a reverse cycle becomes frequent.
すなわち、暖房能力の低下、暖房運転を中断することに
よる不快感及びエネルギー効率が悪くなる等の問題点が
あシ、熱交換器への着霜を低減する必要がある。That is, there are problems such as a reduction in heating capacity, discomfort due to interruption of heating operation, and deterioration of energy efficiency, and it is necessary to reduce frost formation on the heat exchanger.
尚、ここで撥水性というのは、板状フィンの材料である
鉄、銅、アルミニウム等金属薄板の無処理表面のもつ表
面張力よりも高いものを言い、純水との接触角で表わす
と５００以上である表面を言い、又親水性とは、純水と
の接触角で６００未満である表面を言う。Note that water repellency here refers to a surface tension higher than that of the untreated surface of thin metal plates such as iron, copper, and aluminum, which are the materials of the plate-shaped fins, and is expressed as a contact angle with pure water of 500 Hydrophilicity refers to a surface having a contact angle with pure water of less than 600.
課題を解決するだめの手段
上記課題を解決するため、本発明は一定間隔で多数並行
に並べられ、その間を気流が流動する板状フィンと、こ
の板状フィンに直角に挿通された伝熱管とから成る熱交
換器において、撥水性で且つ微細凹凸を付与した表面処
理を施したフィン材を板状フィンとして用いるものであ
る。Means for Solving the Problems In order to solve the above problems, the present invention comprises a plurality of plate-shaped fins arranged in parallel at regular intervals and through which airflow flows, and a heat transfer tube inserted through the plate-shaped fins at right angles. In this heat exchanger, a fin material that is water repellent and has been surface-treated to have fine irregularities is used as the plate-like fins.
作 用
フィン表面が撥水性である場合、フィン表面温度が０℃
以下となシ、空気中の水分が付着する場合、表面温度が
かなり低い場合でもいきなシ霜化せず、−旦凝縮水とし
て付着し、滴状の液体水分５ ページ
として長時間保持される。その後、水分が氷結し、その
上に霜が付着し、着霜が進む。このため、本発明の構成
のように、板状フィンに撥水性で且つ微細凹凸を付与し
た表面処理を施すことにより、その撥水性効果によシ集
中する空気中の水分は、霜と比較し密度が数倍大きい液
体水分としてフィン表面に付着するとともに微細凹凸が
核となｐ、前記液体水分は、細かく分散した形でフィン
上に存在することになる。この水分もやがては氷結し、
その後、集中してくる空気中の水分は、氷結水上に霜と
して付着するものの、それまでの間、隣接するフィン間
の風路は大きく確保される。又、氷結水が分散している
ため、その付着する霜も分散し霜の高さ方向への成長は
抑えられる。このことによシ、熱交換器としては、霜層
によるフィン間の閉塞を遅らせることができる・。Effect When the fin surface is water repellent, the fin surface temperature is 0°C.
In the following, when moisture in the air adheres, it does not suddenly become frosty even if the surface temperature is quite low, but it adheres as condensed water and is retained for a long time as drop-shaped liquid moisture. . After that, the water freezes, frost forms on top of it, and frost formation progresses. Therefore, as in the configuration of the present invention, by subjecting the plate-like fins to a water-repellent surface treatment with fine irregularities, the moisture in the air that concentrates due to the water-repellent effect is reduced compared to frost. The liquid water adheres to the fin surface as liquid water with a density several times higher, and the fine irregularities form the nucleus, and the liquid water exists on the fin in a finely dispersed form. This water will eventually freeze,
Thereafter, the concentrated moisture in the air forms frost on the frozen water, but until then, the air passage between adjacent fins is largely secured. Furthermore, since the frozen water is dispersed, the frost that adheres thereto is also dispersed, and the growth of frost in the height direction is suppressed. This allows the heat exchanger to delay clogging between the fins due to a layer of frost.
実施例
以下本発明の一実施例について図面を参照しながら説明
する。第１図は、本発明の一実施例の熱交換器の一部側
面断面図を、第２図は、正面断面６ ページ
図を示したものである。第１図、第２図において、表面
が撥水性で且つ微細凹凸を付与した表面処理層６を設け
たアルミニウム製板状フィン５に、伝熱管挿通孔を穿設
すると共に、フィンカラー２を等間隔に立ち上げ、これ
に銅製伝熱管３を挿通後、拡管等の手段によシ板状フィ
ン６に密着固定し、本体を構成しである。以下、その作
用について説明する。伝熱管３内部に冷媒を流動させ、
その熱を伝熱管に密着固定されたフィンカラー２からフ
ィン６上に伝えられ、熱交換器に気体を流動させフィン
上を通過させて、気体とフィン５と伝熱管３との温度差
によシ熱の授受が行われ、冷媒と気体との熱交換が連続
的に行われる。熱交換器に流入する空気は冷却されフィ
ン表面上空気中の水分が凝縮してくる。しかし、フィン
表面が撥水性であるだめフィン表面が０℃以下でも、フ
ィン表面で氷結することはなく、微細凹凸部７を核とし
てその周囲に液体の水分の形で保持される。霜層に比較
し、液体水分は密度が数倍大きい。又、この水分が氷結
後も、氷結水が分散しているだめ、霜７ ベー／
も分散し、霜層の高さ方向への成長は抑えられる。EXAMPLE An example of the present invention will be described below with reference to the drawings. FIG. 1 is a partial side sectional view of a heat exchanger according to an embodiment of the present invention, and FIG. 2 is a 6-page front sectional view. In FIGS. 1 and 2, a heat exchanger tube insertion hole is bored in an aluminum plate-shaped fin 5 provided with a surface treatment layer 6 whose surface is water repellent and has fine irregularities, and a fin collar 2 is formed. The copper heat transfer tubes 3 are inserted into the tubes at intervals, and then tightly fixed to the plate-like fins 6 by means such as tube expansion to form the main body. The effect will be explained below. Flowing the refrigerant inside the heat exchanger tube 3,
The heat is transferred from the fin collar 2 closely fixed to the heat exchanger tube onto the fin 6, causing the gas to flow in the heat exchanger and passing over the fins, due to the temperature difference between the gas, the fin 5 and the heat exchanger tube 3 Heat is exchanged and heat is continuously exchanged between the refrigerant and the gas. The air flowing into the heat exchanger is cooled and moisture in the air condenses on the fin surfaces. However, since the fin surface is water-repellent, even if the fin surface is below 0° C., ice does not form on the fin surface, and the water is retained in the form of liquid around the fine irregularities 7 as cores. Compared to the frost layer, liquid moisture is several times more dense. Furthermore, even after this water freezes, since the frozen water is dispersed, the frost is also dispersed, and the growth of the frost layer in the height direction is suppressed.
従って熱交換器の霜による閉塞を大幅に遅らすことがで
きる。Therefore, blockage of the heat exchanger due to frost can be significantly delayed.
尚、本実施例による撥水面としては純水接触角１１０°
の４７フ化エチレン樹脂塗料を用い、付与する微細凹凸
としては、プラズマエツチングを施すことにより実現し
た。In addition, the water-repellent surface according to this example has a pure water contact angle of 110°.
Using a 47-fluoride ethylene resin paint, the fine irregularities provided were realized by plasma etching.
撥水性表面処理材料としては、４フツ化エチレン及び６
フソ化プロピレンの共重合樹脂塗料、シリコン樹脂塗料
等の撥水性塗料、ステアリン酸。Examples of water-repellent surface treatment materials include tetrafluoroethylene and 6
Water-repellent paints such as fluorinated propylene copolymer resin paints, silicone resin paints, and stearic acid.
ラウリン酸等の脂肪酸を表面に処理したもの等撥水性が
あれば何れも可能であり、微細凹凸付与方法は、他の粗
面化法、例えば、コロナ処理２機械的粗面化、セラミッ
クス微粉末の塗料中への分散等でも同様の効果が期待で
きる。ただし凹凸部の面粗度ば、１〜１０μｍが望まし
゛く、径は小さい方が良く、１０μｍ以下、望ましくは
２μｍ以下で且つ塗膜上に均一に分散している程良い。Any method can be used as long as it has water repellency, such as surface treatment with fatty acids such as lauric acid, and other surface roughening methods can be used, such as corona treatment 2 mechanical roughening, ceramic fine powder. A similar effect can be expected by dispersing it into a paint. However, the surface roughness of the uneven portion is preferably 1 to 10 μm, and the smaller the diameter is, the better the diameter is 10 μm or less, preferably 2 μm or less, and the more uniformly it is dispersed on the coating film.
以上のように、本実施例によれば板状フィンに、撥水性
で且つ微細凹凸を付与した表面処理を施すことにより、
霜層による熱交換器の閉塞を大幅に遅らせることができ
る。As described above, according to this embodiment, by subjecting the plate-like fin to a surface treatment that makes it water repellent and gives it fine irregularities,
Blockage of heat exchangers by frost layers can be significantly delayed.
発明の効果
以上のように本発明は、一定間隔で、多数平行に並べら
れ、その間を気流が流動する板状フィンと、この板状フ
ィンに直角に挿通された伝熱管とから成り、表面が撥水
性で且つ微細凹凸を付与した表面処理金族したフィン材
を用いて板状フィンを形成した熱交換器であるため、霜
層による閉塞を大巾に遅らせることができる。Effects of the Invention As described above, the present invention consists of a large number of plate-shaped fins arranged in parallel at regular intervals, through which airflow flows, and heat transfer tubes inserted at right angles to the plate-shaped fins. Since the heat exchanger has plate-like fins formed using a surface-treated metal fin material that is water repellent and has fine irregularities, blockage due to frost layer can be significantly delayed.
第１図は本発明の一実施例の熱交換器の部分側面断面図
、第２図は同部分正面断面図、第３図は従来例の部分側
面断面図、第４図は同部分正面断面図である。
１．５・・・・・・板状フィン、６・・・・・・微細凹
凸付与撥水性表面処理層、７・・・・・・微細凹凸部。
代理人の氏名 弁理士 粟 野 重 孝 ほか１名ト、
つ
第
弔
図
／Fig. 1 is a partial side sectional view of a heat exchanger according to an embodiment of the present invention, Fig. 2 is a front sectional view of the same part, Fig. 3 is a partial side sectional view of a conventional example, and Fig. 4 is a front sectional view of the same part. It is a diagram. 1.5... Plate-shaped fin, 6... Water-repellent surface treatment layer with fine irregularities, 7... Fine irregularities. Name of agent: Patent attorney Shigetaka Awano and one other person.
Claims (1)
動する板状フィンと、この板状フィンに直角に挿通され
た伝熱管とからなり、前記板状フィンは撥水性で且つ微
細凹凸を付与した表面処理を施したフィン材で構成した
熱交換器。It consists of a large number of plate-shaped fins arranged in parallel at regular intervals, through which air flows, and a heat transfer tube inserted at right angles to the plate-shaped fins.The plate-shaped fins are water repellent and have fine irregularities. A heat exchanger made of fin material that has been given a surface treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63274885A JP2723558B2 (en) | 1988-10-31 | 1988-10-31 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63274885A JP2723558B2 (en) | 1988-10-31 | 1988-10-31 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02122198A true JPH02122198A (en) | 1990-05-09 |
| JP2723558B2 JP2723558B2 (en) | 1998-03-09 |
Family
ID=17547894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63274885A Expired - Lifetime JP2723558B2 (en) | 1988-10-31 | 1988-10-31 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2723558B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008249298A (en) * | 2007-03-30 | 2008-10-16 | Daikin Ind Ltd | Finned tube heat exchanger |
| JP2019002587A (en) * | 2017-06-12 | 2019-01-10 | 株式会社デンソー | Fin base material, and manufacturing method of heat exchanger |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5996274A (en) * | 1982-11-22 | 1984-06-02 | Mitsubishi Alum Co Ltd | Method for increasing surface area of thin al alloy plate |
| JPS6338890A (en) * | 1986-08-01 | 1988-02-19 | Matsushita Refrig Co | Heat exchanger |
-
1988
- 1988-10-31 JP JP63274885A patent/JP2723558B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5996274A (en) * | 1982-11-22 | 1984-06-02 | Mitsubishi Alum Co Ltd | Method for increasing surface area of thin al alloy plate |
| JPS6338890A (en) * | 1986-08-01 | 1988-02-19 | Matsushita Refrig Co | Heat exchanger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008249298A (en) * | 2007-03-30 | 2008-10-16 | Daikin Ind Ltd | Finned tube heat exchanger |
| JP2019002587A (en) * | 2017-06-12 | 2019-01-10 | 株式会社デンソー | Fin base material, and manufacturing method of heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2723558B2 (en) | 1998-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ganesan et al. | Air-side heat transfer characteristics of hydrophobic and super-hydrophobic fin surfaces in heat exchangers: A review | |
| KR102454219B1 (en) | Heat exchanger | |
| JP2017150756A (en) | Heat exchanger and fin manufacturing method | |
| JPH11148747A (en) | Heat transfer tube for evaporator of absorption refrigerator | |
| JPH02122198A (en) | Heat exchanger | |
| JP2003240487A (en) | Anti-frost member and heat exchanger | |
| JPH0271096A (en) | Heat exchanger with fin | |
| JPH10274493A (en) | Heat exchanger | |
| JPH02192597A (en) | Heat exchanger | |
| JPH08152287A (en) | Heat exchanger | |
| CN213335050U (en) | A heat exchanger with automatic defrosting or deicing | |
| JPS6338890A (en) | Heat exchanger | |
| CN101865590A (en) | refrigerator | |
| JPH03244680A (en) | Water-repellent coating composition and heat exchanger using water repellent-coating composition | |
| JP2000180091A (en) | Cooling coil having ultra-water repellent surface and indoor temperature regulator | |
| JPS62155493A (en) | Heat exchanger with fins | |
| JP2020143806A (en) | Heat exchanger, air conditioner and method for manufacturing heat exchanger | |
| JPH0230696Y2 (en) | ||
| JPS596229Y2 (en) | Refrigeration equipment | |
| JPH03102124A (en) | Heat exchanger | |
| JPS6152591A (en) | Finned tube type heat exchanger | |
| JPH04309791A (en) | Heat exchanger with fin | |
| CN121739812A (en) | Reinforced drainage fin and heat exchanger comprising same | |
| JPH09170771A (en) | Indoor unit for ice storage system | |
| JPS5989965A (en) | Evaporator with corrugated fin |