JPH10170172A - Double tube type heat exchanger - Google Patents
Double tube type heat exchangerInfo
- Publication number
- JPH10170172A JPH10170172A JP32742996A JP32742996A JPH10170172A JP H10170172 A JPH10170172 A JP H10170172A JP 32742996 A JP32742996 A JP 32742996A JP 32742996 A JP32742996 A JP 32742996A JP H10170172 A JPH10170172 A JP H10170172A
- Authority
- JP
- Japan
- Prior art keywords
- cross
- pipe
- heat exchanger
- 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.)
- Pending
Links
Classifications
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
-
- 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
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
-
- 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
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
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)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は２重管式熱交換器に
関する。The present invention relates to a double-pipe heat exchanger.
【０００２】[0002]
【従来の技術】従来、内外管の間にフィンを設けて内管
内に冷却媒体を流通させるとともに内外管の間に被冷却
媒体を流通させて、フィンにより熱伝達を促進させる２
重管式熱交換器が例えば特開平４−２６０７８９号公報
や実開昭５４−１１２３９号公報に開示されている。2. Description of the Related Art Conventionally, fins are provided between inner and outer pipes to allow a cooling medium to flow through the inner pipes, and a medium to be cooled is allowed to flow between the inner and outer pipes to promote heat transfer by the fins.
A double-pipe heat exchanger is disclosed in, for example, JP-A-4-260789 and JP-A-54-11239.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の熱交換器に
おいては、特に被冷却媒体が密度の低い流体（例えば気
体）であると、フィンによる熱伝達促進が少なく、熱交
換効率が悪い問題がある。In the above-mentioned conventional heat exchanger, particularly when the medium to be cooled is a low-density fluid (for example, gas), there is a problem that heat transfer is not promoted by the fins and heat exchange efficiency is poor. is there.
【０００４】更に、フィンによる熱伝達量を大きく確保
するには、フィンを外管の内周面と内管の外周面の両方
に密接させて固着する必要があり、そのロウ付け作業が
極めて困難で手間がかかり、作業性が悪く、製品コスト
が嵩む問題がある。Further, in order to secure a large heat transfer amount by the fins, it is necessary to fix the fins in close contact with both the inner peripheral surface of the outer tube and the outer peripheral surface of the inner tube. However, there is a problem that the operation is troublesome, the workability is poor, and the product cost increases.
【０００５】そこで本発明は、熱交換効率が高く、かつ
製造が容易でコスト低減を図り得る２重管式熱交換器を
提供することを目的とするものである。Accordingly, an object of the present invention is to provide a double-pipe heat exchanger that has high heat exchange efficiency, is easy to manufacture, and can reduce costs.
【０００６】[0006]
【課題を解決するための手段】上記の課題を解決するた
めに、請求項１記載の第１の発明は、被冷却媒体を流通
させる内管（１）と、該内管（１）の外周を離間して囲
むように設けた外管（２）と、内管（１）内に固設した
クロスフィン（６）とからなり、上記クロスフィン
（６）が、内管（１）の径方向に略放射状断面を有する
とともに管軸方向に延在され、かつ、内管（１）の内面
に固定されていることを特徴とするものである。According to a first aspect of the present invention, there is provided an inner pipe (1) through which a medium to be cooled flows, and an outer periphery of the inner pipe (1). And an outer tube (2) provided so as to surround the inner tube and a cross fin (6) fixed in the inner tube (1), and the cross fin (6) has a diameter of the inner tube (1). The tube has a substantially radial cross section in the direction, extends in the tube axis direction, and is fixed to the inner surface of the inner tube (1).
【０００７】請求項２記載の第２の発明は、請求項１記
載の発明におけるクロスフィン（６）が、１枚の板材を
凹凸状に折曲し、これを内管（１）に沿って巻回して略
星型断面に形成されているものである。According to a second aspect of the present invention, the cross fin (6) in the first aspect of the present invention bends a single plate material into an uneven shape and folds it along the inner tube (1). It is formed in a substantially star-shaped cross section by winding.
【０００８】請求項３記載の第３の発明は、請求項１又
は２記載の発明におけるクロスフィン（６）を、分割し
て管軸方向に複数配置したものである。請求項４記載の
第４の発明は、請求項１又は２又は３記載の発明におけ
るクロスフィン（６）が、その表面に凹凸（６ｃ）を有
するものである。According to a third aspect of the present invention, a plurality of cross fins (6) according to the first or second aspect of the present invention are divided and arranged in the pipe axis direction. According to a fourth aspect of the present invention, the cross fin (6) according to the first, second or third aspect has irregularities (6c) on its surface.
【０００９】そして請求項５記載の第５の発明は、請求
項１〜４のいずれかに記載の発明におけるクロスフィン
の各フィン部（６ｂ）における山部（６ａ）の稜線が、
管軸に対して傾斜しているものである。According to a fifth aspect of the present invention, the ridge line of the peak (6a) in each of the fin portions (6b) of the cross fin according to the first aspect of the present invention,
It is inclined with respect to the tube axis.
【００１０】[0010]
【発明の実施の形態】図に示す実施例に基づいて本発明
の実施の形態について説明する。図１（ａ）は本発明の
２重管式熱交換器の実施例の側断面図で、図１（ｂ）は
図１のＡ−Ａ線断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described based on an embodiment shown in the drawings. FIG. 1A is a side sectional view of an embodiment of a double tube heat exchanger of the present invention, and FIG. 1B is a sectional view taken along line AA of FIG.
【００１１】この図において、１は被冷却媒体を流通さ
せる内管で、熱伝導率の高い材質、例えばアルミニウム
等により形成されている。上記内管１の外周には、その
外周を離間して囲むように外管２が配置されているとと
もに、該外管２の両端部２ａ，２ｂが内管１の外周面に
溶接等で固着され、内外管１，２間に冷却媒体の流通室
３が形成されている。In FIG. 1, reference numeral 1 denotes an inner tube through which a medium to be cooled flows, which is made of a material having a high thermal conductivity, such as aluminum. An outer pipe 2 is disposed on the outer circumference of the inner pipe 1 so as to surround the outer circumference at a distance, and both ends 2a and 2b of the outer pipe 2 are fixed to the outer circumference of the inner pipe 1 by welding or the like. A cooling medium flow chamber 3 is formed between the inner and outer tubes 1 and 2.
【００１２】上記外管２には、冷却媒体を流通室３に導
入するための導入管４と流通室３内の冷却媒体を排出す
るための排出管５が設けられている。上記内管１内には
クロスフィン６が固設されている。該クロスフィン６
は、内管１内に、該内管１の径方向に略放射状断面を有
し、かつ内管１の軸方向に所定長延在させ、更に内管１
の内面に固定させたものである。更により詳しくは１枚
の金属板を略蛇腹状に屈曲させてその各外側の山部６ａ
の外面が内管１の内面に沿うように丸めて図１（ｂ）の
ように略星型断面に形成するとともにその山部６ａの外
面と内管１の内面とをロー付け等で固着されている。こ
れにより、内管１の径方向に略放射状に配置されたフィ
ン部６ｂが、内管１の周方向に多数一連に設けられてい
るとともに、隣接する各フィン部６ｂ間に被冷却媒体の
流通部７を形成している。The outer pipe 2 is provided with an introduction pipe 4 for introducing a cooling medium into the flow chamber 3 and a discharge pipe 5 for discharging the cooling medium in the flow chamber 3. A cross fin 6 is fixed in the inner tube 1. The cross fin 6
Has a substantially radial cross-section in the radial direction of the inner tube 1 and extends a predetermined length in the axial direction of the inner tube 1.
It is fixed to the inner surface of. More specifically, one metal plate is bent in a substantially bellows-like shape, and each outer peak portion 6a is formed.
Is rounded along the inner surface of the inner tube 1 to form a substantially star-shaped cross section as shown in FIG. 1 (b), and the outer surface of the crest 6a and the inner surface of the inner tube 1 are fixed by brazing or the like. ing. Thus, a large number of fin portions 6b radially arranged in the radial direction of the inner tube 1 are provided in series in the circumferential direction of the inner tube 1, and the flow of the cooling medium between the adjacent fin portions 6b is performed. The part 7 is formed.
【００１３】また、上記クロスフィン６は、内管１の軸
方向に対して所定の長さに設定するもので、図１（ａ）
に示す如く、上記流通室３の管軸方向長に対して複数個
に分割（図１（ａ）では３分割）される長さでもよく、
また、１個の長さを流通室３の管軸方向長と同一長さと
してもよい。また、分割した場合は、図１（ａ）に示す
ように、そのクロスフィン６を、これら相互間に間隙Ｄ
を有して配置するとよい。このような間隙Ｄを設ける
と、該間隙Ｄ部で図５に示すように内管１を容易に折曲
できる。The cross fins 6 are set to a predetermined length in the axial direction of the inner tube 1, and are shown in FIG.
As shown in FIG. 1, the length may be divided into a plurality of parts (three divisions in FIG. 1A) with respect to the length of the flow chamber 3 in the tube axis direction.
Further, one length may be the same as the length of the flow chamber 3 in the tube axis direction. In the case of division, as shown in FIG. 1A, the cross fins 6 are provided with a gap D between them.
It is good to arrange with. When such a gap D is provided, the inner tube 1 can be easily bent at the gap D as shown in FIG.
【００１４】また、上記クロスフィン６の材質は熱伝導
性の高い材質、例えばアルミニウム等により形成されて
いる。また、上記クロスフィン６におけるフィン６ｂの
管径方向長及び周方向の本数は所望に設定するものであ
る。The material of the cross fins 6 is made of a material having high thermal conductivity, for example, aluminum. The length of the fins 6b in the tube radial direction and the number of the fins 6b in the circumferential direction in the cross fins 6 are set as desired.
【００１５】以上の構造において、内管１内を流通する
被冷却媒体は、クロスフィン６における流通部７を流通
して各フィン部６ｂに当接し、被冷却媒体の熱がフィン
部６ｂに奪われ、その熱は内管１に伝達し、更に流通室
３内を流通する冷却媒体に伝熱されて排熱される。In the above structure, the medium to be cooled flowing through the inner tube 1 flows through the flow section 7 of the cross fins 6 and abuts against the fins 6b, so that the heat of the medium to be cooled is transferred to the fins 6b. Then, the heat is transmitted to the inner tube 1 and further transferred to the cooling medium flowing in the flow chamber 3 to be exhausted.
【００１６】また、上記クロスフィン６は、図１及び図
２に示すように、フィン部６ｂの一部を折曲して表面
（表裏面）に凹凸部６ｃを形成しても良い。このように
凹凸部６ｃを形成すると受熱表面積が多くなり、一層熱
交換効率が促進される。As shown in FIGS. 1 and 2, the cross fin 6 may be formed by bending a part of the fin portion 6b to form an uneven portion 6c on the front surface (front and back surfaces). The formation of the concavo-convex portion 6c increases the heat receiving surface area and further promotes the heat exchange efficiency.
【００１７】更に、上記クロスフィン６を、図３に示す
ように、その山部６ａを結ぶ稜線Ｘ 1 −Ｘ1 が内管１の
管軸Ｘ−Ｘに対して角度αを成すように配置してもよ
い。このようにすると、内管１内を流通する被冷却媒体
が各フィン部６ｂに強く当接し、熱交換が促進される。
更に、上記稜線Ｘ1 −Ｘ1 の傾斜方向を、図４に示すよ
うに隣り合うクロスフィン６Ａ，６Ｂ同士が異なる方向
になるように形成すると、より一層熱交換が促進され
る。Further, the cross fins 6 are shown in FIG.
Ridge line X connecting the peaks 6a 1-X1Is the inner tube 1
It may be arranged so as to form an angle α with respect to the tube axis XX.
No. By doing so, the medium to be cooled flowing through the inner pipe 1
Strongly contact each fin portion 6b to promote heat exchange.
Furthermore, the ridge line X1-X1The inclination direction of is shown in FIG.
The cross fins 6A and 6B adjacent to each other are in different directions
Is formed, the heat exchange is further promoted.
You.
【００１８】図５は本発明の２重管式熱交換器を自動車
のＥＧＲパイプに適用した例を示す。この図において、
１は上記図１に示した内管１に相当し、該内管１の上流
側１ａには図示しない内燃機関のエキゾーストマニホー
ルドが連結され、後流側１ｂには図示しないインテーク
マニホールドが連結され、排気ガスが矢印のように内管
１内を流通する。２は外管、４は冷却媒体の導入管、５
は冷却媒体の排出管、６はクロスフィンで、上記図１乃
至図４に示すものと同様のものである。冷却媒体はエン
ジン冷却水である。FIG. 5 shows an example in which the double-pipe heat exchanger of the present invention is applied to an EGR pipe of an automobile. In this figure,
Reference numeral 1 corresponds to the inner pipe 1 shown in FIG. 1 described above. An exhaust manifold of an internal combustion engine (not shown) is connected to an upstream side 1a of the inner pipe 1, and an intake manifold (not shown) is connected to a downstream side 1b. Exhaust gas flows through the inner pipe 1 as shown by the arrow. 2 is an outer tube, 4 is a cooling medium introduction tube, 5
Is a discharge pipe for the cooling medium, and 6 is a cross fin, which is the same as that shown in FIGS. The cooling medium is engine cooling water.
【００１９】次に上記内管１と上記クロスフィン６の製
造方法について図６により説明する。先ず、図６（ａ）
に示すように、上記内筒１の素材であるシート材１ｃ上
に、予め凹凸に折曲形成した上記クロスフィン６のフィ
ン素材６ｄを載置して、その山部６ｂとシート材１ｃの
接合部をロー付け等で固着する。Next, a method of manufacturing the inner tube 1 and the cross fins 6 will be described with reference to FIG. First, FIG.
As shown in the figure, a fin material 6d of the cross fin 6 which has been bent in advance and recessed is placed on a sheet material 1c which is a material of the inner cylinder 1, and the crest 6b and the sheet material 1c are joined. The part is fixed by brazing or the like.
【００２０】次で、図６（ｂ）に示すように、シート材
１ｃを、フィン素材６ｄが内側となるように略Ｕ字断面
形状に折曲する。この折曲方法は、図６（ｂ）に示すよ
うに、半円状の凹型面９を形成したダイ１０上に上記の
シート材１ｃを載置し、これをＵ状もしくは略放射状の
凸型面を形成したパンチ１１で加圧して折曲する。Next, as shown in FIG. 6B, the sheet material 1c is bent into a substantially U-shaped cross section so that the fin material 6d is on the inside. In this bending method, as shown in FIG. 6B, the above-mentioned sheet material 1c is placed on a die 10 having a semicircular concave surface 9 formed thereon, and this is placed in a U-shaped or substantially radial convex shape. It is bent by pressing with a punch 11 having a surface formed.
【００２１】次で、図６（ｃ）に示すように、上記のよ
うに折曲されたシート材１ｃをダイ１２の半円状の凹型
面１３に嵌合した後、半円状の凹型面１４を形成したパ
ンチ１５で加圧し、シート材１ｃの両端部を丸めて円筒
にし、その両端１ｄ，１ｅをロー付け等で結合して、上
記図１（ｂ）に示すような断面形状にする。Next, as shown in FIG. 6C, after the sheet material 1c bent as described above is fitted to the semicircular concave surface 13 of the die 12, the semicircular concave surface is formed. The sheet material 1c is pressurized with a punch 15 formed thereon, and both ends of the sheet material 1c are rounded into a cylinder, and both ends 1d and 1e are joined by brazing or the like to obtain a cross-sectional shape as shown in FIG. .
【００２２】このような折曲加工は一般に使用されてい
るプレス成形機で行える。尚、上記クロスフィン６の径
方向の断面形状は、上記図に示すような略星型断面に限
るものではなく、その他の放射断面形状でもよい。Such bending can be performed by a generally used press molding machine. The cross-sectional shape of the cross fins 6 in the radial direction is not limited to a substantially star-shaped cross-section as shown in the above-mentioned figure, but may be another radial cross-sectional shape.
【００２３】[0023]
【発明の効果】以上のようであるから、請求項１記載の
発明によれば、内管内を流通する被冷却媒体は、クロス
フィンのフィン部に当接して熱を奪われ、その熱は内管
１に伝達し、内外管の間を流通する冷却媒体に伝達さ
れ、排熱される。このとき、内管内に多数のフィンを有
することにより、効率よく内管内の被冷却媒体を冷却で
きる。As described above, according to the first aspect of the present invention, the medium to be cooled flowing through the inner pipe is brought into contact with the fins of the cross fins to remove heat, and the heat is transferred to the inner fins. The heat is transmitted to the pipe 1, transmitted to the cooling medium flowing between the inner and outer pipes, and discharged. At this time, by having a large number of fins in the inner pipe, the medium to be cooled in the inner pipe can be efficiently cooled.
【００２４】また、クロスフィンは、内筒側にのみ固定
するのみでよいため、従来のような内外管に固定するも
のに比べてロー付け作業が容易になり、冷却効率のよい
熱交換器を容易にかつ低廉に製造できる。Further, since the cross fins need only be fixed to the inner cylinder side only, the brazing operation is easier than in the conventional case where the cross fins are fixed to the inner and outer pipes. It can be manufactured easily and at low cost.
【００２５】請求項２記載の発明によれば、更に、板材
を凹凸状に折り曲げたものを巻回するのみでクロスフィ
ンが形成できるので、クロスフィンの製造が容易にな
る。請求項３記載の発明によれば、クロスフィンを分割
したことにより、必要な表面積分のクロスフィンを任意
の箇所に設置しやすく、すなわち、チューニングが容易
になる。更に、クロスフィンが配設されていない箇所で
は内外管の管曲げ加工が容易に施せるため、熱交換構造
が完成した後にその熱交換器全体を曲げて所定形状にす
ることが可能になる。According to the second aspect of the present invention, the cross fins can be formed only by winding a plate material that is bent in an uneven shape, thereby facilitating the manufacture of the cross fins. According to the third aspect of the present invention, by dividing the cross fins, it is easy to install the cross fins having a required surface area at arbitrary locations, that is, to facilitate tuning. Further, since the inner and outer pipes can be easily bent at a portion where the cross fins are not provided, it is possible to bend the entire heat exchanger into a predetermined shape after the heat exchange structure is completed.
【００２６】請求項４記載の発明によれば、更にクロス
フィンの受熱表面積が一層増大し、熱交換効率が一層向
上する。請求項５記載の発明によれば、クロスフィンの
受熱面が被冷却媒体の流れ方向に対して傾斜するため、
被冷却媒体のクロスフィンに対する当接が一層強くな
り、熱交換効率が一層向上する。また、内管の軸方向に
複数のクロスフィンを配置した場合には、内管の軸方向
に対して、夫々のクロスフィンの稜線方向を相互に異な
る方向にすることにより、被冷却媒体のクロスフィンへ
の当接が更に強くなり、更に一層熱交換効率が向上す
る。According to the fourth aspect of the present invention, the heat receiving surface area of the cross fin is further increased, and the heat exchange efficiency is further improved. According to the fifth aspect of the present invention, since the heat receiving surface of the cross fin is inclined with respect to the flow direction of the medium to be cooled,
The contact of the cooling medium with the cross fins is further enhanced, and the heat exchange efficiency is further improved. When a plurality of cross fins are arranged in the axial direction of the inner pipe, the cross fins of the medium to be cooled are set by making the ridge direction of each cross fin different from the axial direction of the inner pipe. The contact with the fins is further strengthened, and the heat exchange efficiency is further improved.
【図１】本発明の実施例を示すもので、（ａ）は側断面
図、（ｂ）は（ａ）におけるＡ−Ａ線断面図。FIGS. 1A and 1B show an embodiment of the present invention, in which FIG. 1A is a side sectional view, and FIG. 1B is a sectional view taken along line AA in FIG.
【図２】本発明のクロスフィンの一部拡大断面図。FIG. 2 is a partially enlarged cross-sectional view of the cross fin of the present invention.
【図３】本発明のクロスフィンの第２実施例を示す側面
図。FIG. 3 is a side view showing a second embodiment of the cross fin of the present invention.
【図４】本発明のクロスフィンの第３実施例を示す側面
図。FIG. 4 is a side view showing a third embodiment of the cross fin of the present invention.
【図５】本発明を自動車のＥＧＲパイプに適用した側面
図。FIG. 5 is a side view in which the present invention is applied to an EGR pipe of an automobile.
【図６】（ａ）〜（ｃ）は、本発明の内管とクロスフィ
ンの製造方法を示す工程図。FIGS. 6A to 6C are process diagrams showing a method for producing an inner tube and a cross fin according to the present invention.
１…内管 ２…外管 ６…クロスフィン ６ａ…山部 ６ｂ…フィン部 ６ｃ…凹凸 DESCRIPTION OF SYMBOLS 1 ... Inner pipe 2 ... Outer pipe 6 ... Cross fin 6a ... Crest part 6b ... Fin part 6c ... Unevenness
Claims (5)
の外周を離間して囲むように設けた外管と、内管内に固
設したクロスフィンとからなり、上記クロスフィンが、
内管の径方向に略放射状断面を有するとともに管軸方向
に延在され、かつ、内管の内面に固定されていることを
特徴とする２重管式熱交換器。1. An inner pipe through which a medium to be cooled flows, an outer pipe provided to surround the outer circumference of the inner pipe at a distance, and a cross fin fixed in the inner pipe, wherein the cross fin is:
A double-pipe heat exchanger having a substantially radial cross section in the radial direction of the inner pipe, extending in the pipe axis direction, and being fixed to the inner surface of the inner pipe.
折曲し、これを内管に沿って巻回して略星型断面に形成
されている請求項１記載の２重管式熱交換器。2. The double-pipe type heat exchanger according to claim 1, wherein the cross fin is formed by bending a single plate material into an uneven shape and winding it along an inner tube to form a substantially star-shaped cross section. Exchanger.
数配置した請求項１又は２記載の２重管式熱交換器。3. The double-pipe heat exchanger according to claim 1, wherein a plurality of cross fins are divided and arranged in the pipe axis direction.
る請求項１又は２又は３記載の２重管式熱交換器。4. The double-pipe heat exchanger according to claim 1, wherein the cross fin has irregularities on its surface.
の稜線が、管軸に対して傾斜している請求項１〜５のい
ずれかに記載の２重管式熱交換器。5. The double-pipe heat exchanger according to claim 1, wherein the ridgeline of the ridge in each fin portion of the cross fin is inclined with respect to the pipe axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32742996A JPH10170172A (en) | 1996-12-09 | 1996-12-09 | Double tube type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32742996A JPH10170172A (en) | 1996-12-09 | 1996-12-09 | Double tube type heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10170172A true JPH10170172A (en) | 1998-06-26 |
Family
ID=18199079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32742996A Pending JPH10170172A (en) | 1996-12-09 | 1996-12-09 | Double tube type heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10170172A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002054511A (en) * | 2000-08-14 | 2002-02-20 | Hino Motors Ltd | Egr cooler |
| CN100422665C (en) * | 2003-09-05 | 2008-10-01 | Lg电子株式会社 | Air conditioner comprising heat exchanger and means for switching cooling cycle |
| JP2010060497A (en) * | 2008-09-05 | 2010-03-18 | Kawasaki Heavy Ind Ltd | Corrosion monitoring sensor |
| CN102032827A (en) * | 2010-11-30 | 2011-04-27 | 上海科米钢管有限公司 | Process for processing heating jacket of heat exchange pipe |
| WO2012099170A1 (en) * | 2011-01-19 | 2012-07-26 | 株式会社 テクノバ | Contactless power transfer system |
| JP2013055229A (en) * | 2011-09-05 | 2013-03-21 | Technova:Kk | Noncontact feeding transformer |
| JP2014066140A (en) * | 2012-09-24 | 2014-04-17 | Toyota Motor Corp | Egr cooler |
| CN106401808A (en) * | 2015-07-30 | 2017-02-15 | 高级英国公司 | Finned coaxial cooler |
| GB2559182A (en) * | 2017-01-30 | 2018-08-01 | Senior Uk Ltd | Finned coaxial cooler |
| WO2020073744A1 (en) * | 2018-10-11 | 2020-04-16 | 丹佛斯有限公司 | Pipe assembly and heat exchanger |
| US10995998B2 (en) | 2015-07-30 | 2021-05-04 | Senior Uk Limited | Finned coaxial cooler |
-
1996
- 1996-12-09 JP JP32742996A patent/JPH10170172A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002054511A (en) * | 2000-08-14 | 2002-02-20 | Hino Motors Ltd | Egr cooler |
| CN100422665C (en) * | 2003-09-05 | 2008-10-01 | Lg电子株式会社 | Air conditioner comprising heat exchanger and means for switching cooling cycle |
| JP2010060497A (en) * | 2008-09-05 | 2010-03-18 | Kawasaki Heavy Ind Ltd | Corrosion monitoring sensor |
| CN102032827A (en) * | 2010-11-30 | 2011-04-27 | 上海科米钢管有限公司 | Process for processing heating jacket of heat exchange pipe |
| WO2012099170A1 (en) * | 2011-01-19 | 2012-07-26 | 株式会社 テクノバ | Contactless power transfer system |
| US9312729B2 (en) | 2011-01-19 | 2016-04-12 | Technova Inc. | Contactless power transfer apparatus |
| JP2013055229A (en) * | 2011-09-05 | 2013-03-21 | Technova:Kk | Noncontact feeding transformer |
| JP2014066140A (en) * | 2012-09-24 | 2014-04-17 | Toyota Motor Corp | Egr cooler |
| CN106401808A (en) * | 2015-07-30 | 2017-02-15 | 高级英国公司 | Finned coaxial cooler |
| EP3133363A1 (en) * | 2015-07-30 | 2017-02-22 | Senior UK Limited | Finned coaxial cooler |
| US10995998B2 (en) | 2015-07-30 | 2021-05-04 | Senior Uk Limited | Finned coaxial cooler |
| US11029095B2 (en) | 2015-07-30 | 2021-06-08 | Senior Uk Limited | Finned coaxial cooler |
| GB2559182A (en) * | 2017-01-30 | 2018-08-01 | Senior Uk Ltd | Finned coaxial cooler |
| GB2559182B (en) * | 2017-01-30 | 2021-01-06 | Senior Uk Ltd | Finned heat exchangers |
| EP3355018B1 (en) * | 2017-01-30 | 2022-01-19 | Senior UK Limited | Finned coaxial cooler |
| EP3543636B1 (en) * | 2017-01-30 | 2023-07-19 | Senior Uk Limited | Finned coaxial cooler |
| WO2020073744A1 (en) * | 2018-10-11 | 2020-04-16 | 丹佛斯有限公司 | Pipe assembly and heat exchanger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2101202C (en) | Pipe assembly for efficient light-off of catalytic converter | |
| JPH10170172A (en) | Double tube type heat exchanger | |
| JP2001507114A (en) | Heat exchanger | |
| JP2001241872A (en) | Multitubular heat exchanger | |
| JP2010144970A (en) | Double pipe heat exchanger and method of manufacturing the same | |
| JP3927700B2 (en) | Manufacturing method of heat exchanger | |
| JP5022566B2 (en) | Non-cylindrical catalyst carrier and production tool and production method thereof | |
| JP3400919B2 (en) | Method for producing catalyst carrier and exhaust system member | |
| JP2001132872A (en) | Double pipe structure and manufacturing method thereof | |
| EP1388720B1 (en) | Triple-tube type heat exchanger and method of producing same | |
| JP2000079462A (en) | Heat exchanger | |
| JP2001272193A (en) | Core section of egr gas cooler and method of manufacturing the same | |
| JP3047361U (en) | Exhaust flow induction device in catalytic converter | |
| JP3066366B2 (en) | Method of manufacturing radial cross-section tube | |
| JPH10185480A (en) | Production of cross-fin tube | |
| JP2000161871A (en) | Double piping type heat exchanger | |
| JP4412795B2 (en) | Heat exchanger | |
| JP2004069209A (en) | Element tube for heat exchanger | |
| JP3023314B2 (en) | Channel split pipe, bending method thereof and double pipe type exhaust pipe | |
| JPH06174384A (en) | Double tube type heat exchanger | |
| JPH08121158A (en) | Double exhaust pipe for internal combustion engine and its manufacture | |
| JP2003021478A (en) | Double pipe heat exchanger and method for manufacturing the same | |
| JP2000079430A (en) | Method for winding and forming heat transmitting fin | |
| JPH1123181A (en) | Heat exchanger | |
| JPH10160375A (en) | Heat exchanger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20020604 |