JP4574425B2 - Heat exchanger with bypass switching valve - Google Patents

Heat exchanger with bypass switching valve Download PDF

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JP4574425B2
JP4574425B2 JP2005123187A JP2005123187A JP4574425B2 JP 4574425 B2 JP4574425 B2 JP 4574425B2 JP 2005123187 A JP2005123187 A JP 2005123187A JP 2005123187 A JP2005123187 A JP 2005123187A JP 4574425 B2 JP4574425 B2 JP 4574425B2
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valve
header
elbow
bypass
heat exchanger
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JP2006299942A (en
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公昭 中野
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T.RAD CO., L T D.
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T.RAD CO., L T D.
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/25—Layout, e.g. schematics with coolers having bypasses

Description

本発明は主としてＥＧＲクーラとして最適なバイパス切替えバルブ付熱交換器に関する。   The present invention mainly relates to a heat exchanger with a bypass switching valve that is optimal as an EGR cooler.

従来のバイパス切替えバルブ付ＥＧＲ（排気ガス再循環装置）クーラは、一例としてヨーロッパ公開公報０９８７４２７Ａ１に記載されているものが提案されている。これは、バイパス回路をアクチュエータを介し、開閉バルブにより開閉自在にしたものである。   As an example of a conventional EGR (exhaust gas recirculation device) cooler with a bypass switching valve, one described in European Patent Publication 0987427A1 has been proposed. This is a bypass circuit that can be opened and closed by an open / close valve via an actuator.

ヨーロッパ公開公報 ０９８７４２７ Ａ１European publication 0987427 A1

従来のＥＧＲクーラは、バイパスバルブにより排気ガスをバイパス側とコア側とに切り替えるものであるが、排気ガス自体をＥＧＲクーラに通過させないためには、他の開閉バルブを更に設ける必要があった。そのため構造が複雑で、コンパクト化しにくい欠点があった。
そこで本発明は、係る問題点を取り除きＥＧＲ自体の開閉バルブとバイパスバルブとを一体化したものを提供することを課題とする。 The conventional EGR cooler switches the exhaust gas between the bypass side and the core side by a bypass valve. However, in order to prevent the exhaust gas itself from passing through the EGR cooler, it is necessary to provide another open / close valve. As a result, the structure is complicated and it is difficult to make it compact.
Therefore, an object of the present invention is to eliminate such problems and provide an integrated opening / closing valve and bypass valve of the EGR itself.

請求項１に記載の本発明は、多数のチューブ(1) が並列されたコア(2) と、
そのコア(2) に近接して並列されたバイパス管(3) と、
夫々のチューブ(1) の両端およびバイパス管(3) の両端が貫通された一対のヘッダ(4) (5) と、
一方の前記ヘッダであって開閉バルブが収納されるバルブ付ヘッダ(5) の内周が円筒状またはその一部をなし、その円筒の内周に開口するヘッダ出入口(6) と、そのバルブ付ヘッダ(5) の前記円筒の軸線上に開口するバイパス出入口(7) と、
そのヘッダ出入口(6) とバイパス出入口(7) とを接離自在にエルボ状に連通し、前記軸線の回りに回動自在に設けられ、その一方のバルブ口(22)がバルブ付ヘッダ(5) の内面に摺接するようにしたエルボ型開閉バルブ(8) と、
その一方のバルブ口(22)の開口縁部に断面弧状に延在し、それが前記エルボ型開閉バルブ(8) の回動に伴い、そのヘッダ出入口(6) を開閉自在に閉塞するようにした閉塞体(10)と、
前記コア(2) およびバイパス管(3) の外周を被嵌し、両ヘッダ(4) (5) 間を連結するケーシング(9) と、
を具備し、前記ヘッダ(4) (5) に第１流体が導かれ、前記ケーシング(9) 内に第２流体が導かれるバイパス切替バルブ付熱交換器である。 The present invention according to claim 1 comprises a core (2) in which a number of tubes (1) are arranged in parallel,
A bypass pipe (3) juxtaposed in close proximity to the core (2);
A pair of headers (4) (5) through which both ends of each tube (1) and both ends of the bypass pipe (3) pass,
One of the headers, the inner periphery of the valve-equipped header (5) in which the open / close valve is accommodated is cylindrical or part thereof, and the header inlet / outlet (6) that opens to the inner periphery of the cylinder, A bypass outlet (7) opening on the axis of the cylinder of the header (5);
The header inlet / outlet (6) and the bypass inlet / outlet (7) are connected to and separated from each other in an elbow shape, and are provided so as to be rotatable about the axis, and one of the valve ports (22) is provided with a header (5) An elbow-type on-off valve (8) that is in sliding contact with the inner surface of
One of the valve openings (22) extends in an arc shape at the opening edge so that the header inlet / outlet (6) can be opened and closed as the elbow-type opening / closing valve (8) rotates. Occluded body (10),
A casing (9) for fitting the outer periphery of the core (2) and the bypass pipe (3) and connecting between the headers (4) (5);
A heat exchanger with a bypass switching valve in which the first fluid is guided to the headers (4) and (5) and the second fluid is guided to the casing (9).

請求項２に記載の本発明は、請求項１において、
前記閉塞体(10)にバルブ口(22)に近接して開口部(11)が形成され、その開口部(11)とバルブ口(22)とが前記エルボ型開閉バルブ(8) の回動に伴い、そのヘッダ出入口(6) に跨がるように構成されたバイパス切替バルブ付熱交換器である。 The present invention according to claim 2 is the method according to claim 1,
An opening (11) is formed in the closing body (10) in the vicinity of the valve port (22), and the opening (11) and the valve port (22) rotate the elbow-type opening / closing valve (8). Accordingly, the heat exchanger with a bypass switching valve is configured to straddle the header inlet / outlet (6).

請求項３に記載の本発明は、請求項１または請求項２において、
バルブ付ヘッダ(5) の軸線方向一端にバルブ駆動用アクチュエータ(12)が設けられ、その出力端(18)が前記エルボ型開閉バルブ(8) に連結され、
そのエルボ型の曲がり部から前記一方のバルブ口(22) に向かう向きと逆向きにバランス部材(8a)が突設され、それがヘッダ(5) 内面に摺接するように構成されたバイパス切替バルブ付熱交換器である。 According to a third aspect of the present invention, in the first or second aspect,
A valve drive actuator (12) is provided at one axial end of the valve header (5), and its output end (18) is connected to the elbow-type on-off valve (8).
The bypass switching valve is configured such that a balance member (8a) protrudes from the elbow-shaped bent portion in a direction opposite to the direction toward the one valve port (22), and is in sliding contact with the inner surface of the header (5). It is an attached heat exchanger.

請求項４に記載の本発明は、請求項１または請求項２において、
バルブ付ヘッダ(5) の軸線方向一端にバルブ駆動用アクチュエータ(12)が設けられ、その出力端(18)が前記エルボ型開閉バルブ(8) に連結され、
前記閉塞体(10)が円筒状に形成され、その外周がヘッダ(5) 内面に摺接するように構成されたバイパス切替バルブ付熱交換器である。 The present invention described in claim 4 provides the method according to claim 1 or claim 2,
A valve drive actuator (12) is provided at one axial end of the valve header (5), and its output end (18) is connected to the elbow-type on-off valve (8).
The heat exchanger with a bypass switching valve is configured such that the closing body (10) is formed in a cylindrical shape and the outer periphery thereof is in sliding contact with the inner surface of the header (5).

請求項５に記載の本発明は、請求項１〜請求項３のいずれかにおいて、
熱交換器がＥＧＲクーラとして使用され、第１流体として排気ガス(15)が前記ヘッダ(4) (5) に導かれ、第２流体として冷却水(14)がケーシング(9) 内に導かれるバイパス切替バルブ付熱交換器である。 The present invention according to claim 5 provides the method according to any one of claims 1 to 3,
A heat exchanger is used as an EGR cooler, exhaust gas (15) is led to the header (4) (5) as a first fluid, and cooling water (14) is led as a second fluid into the casing (9). This is a heat exchanger with a bypass switching valve .

本発明の熱交換器は、エルボ型開閉バルブ８がヘッダ出入口６とバイパス出入口７とを接離自在に連通し、そのバルブ口22に設けた閉塞体10がヘッダ出入口６を開閉自在に閉塞するように構成したから、エルボ型開閉バルブ８をその軸線周りに回動することにより、バイパス路とコア側流路とを切り替えることができる。それと共に、ヘッダ出入口６自体の開閉も行うことができる。したがって、第１流体をコア２側とバイパス管３側とに切り替えることができると共に、第１流体の流通自体を停止することもできる。そのため構造が簡単で多機能を有する、コンパクトなバイパス切替えバルブつき熱交換器を提供できる。   In the heat exchanger according to the present invention, the elbow-type opening / closing valve 8 allows the header inlet / outlet 6 and the bypass inlet / outlet 7 to communicate with each other so that the header inlet / outlet 6 can be contacted / separated. Since it comprised in this way, a bypass path and a core side flow path can be switched by rotating the elbow type | mold on-off valve 8 to the surroundings of the axis line. At the same time, the header entrance 6 itself can be opened and closed. Therefore, the first fluid can be switched between the core 2 side and the bypass pipe 3 side, and the flow of the first fluid itself can be stopped. Therefore, it is possible to provide a compact heat exchanger with a bypass switching valve that has a simple structure and has multiple functions.

上記構成において、前記閉塞体(10)にバルブ口(22)に近接して開口部(11)が形成され、その開口部(11)とバルブ口(22)とが前記エルボ型開閉バルブ(8) の回動に伴い、そのヘッダ出入口(6) に跨がるように構成した場合には、第１流体をコア２側とバイパス側と徐々に移行して迅速に切り換えることができる。   In the above configuration, an opening (11) is formed in the closing body (10) in the vicinity of the valve opening (22), and the opening (11) and the valve opening (22) are connected to the elbow-type opening / closing valve (8 ), The first fluid can be gradually switched between the core 2 side and the bypass side to quickly switch over the header inlet / outlet (6).

上記構成において、ヘッダ（バルブ付ヘッダ）５の軸線方向一端にアクチュエータ12を設け、その出力端18をエルボ型開閉バルブ８に連結した場合には、エルボ型開閉バルブ８の駆動機構をコンパクトに配置できる。   In the above configuration, when the actuator 12 is provided at one end in the axial direction of the header (header with valve) 5 and the output end 18 is connected to the elbow type opening / closing valve 8, the drive mechanism of the elbow type opening / closing valve 8 is compactly arranged. it can.

上記構成において、熱交換器をＥＧＲクーラとして用いた場合には、ＥＧＲ開閉バルブとバイパスバルブを一体化したものとなる。   In the above configuration, when the heat exchanger is used as an EGR cooler, the EGR opening / closing valve and the bypass valve are integrated.

次に図面に基づいて本発明の実施の形態につき説明する。
図１は本発明の熱交換器の縦断面図であり、図２のI‐I線上における断面図である。図２は図１のII‐II線矢視断面図、図３は同熱交換器のエルボ型開閉バルブ８の斜視図、図４は図１におけるIV‐IV矢視断面図である。図５はエルボ型開閉バルブ８を回動して、その閉塞体10の開口部11をヘッダ出入口６に整合させた状態を示す図、又図６はそのヘッダ出入口６を閉塞体10によって閉塞した状態を示す図である。 Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view of a heat exchanger according to the present invention, which is a sectional view taken along line II of FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, FIG. 3 is a perspective view of the elbow-type opening / closing valve 8 of the heat exchanger, and FIG. 4 is a cross-sectional view taken along the arrow IV-IV in FIG. FIG. 5 is a view showing a state in which the elbow-type opening / closing valve 8 is rotated to align the opening 11 of the closing body 10 with the header inlet / outlet 6, and FIG. 6 shows the header inlet / outlet 6 closed with the closing body 10. It is a figure which shows a state.

この熱交換器はＥＧＲクーラとして最適なものであり、円筒状のケーシング９の軸線上にバイパス管３が配置され、ケーシング９とバイパス管３との間に図２に示すように多数のチューブ１が断面渦巻状に配置されている。チューブ１は偏平に形成され、内部にインナーフィン16が介装されると共に、横断面が弧状に湾曲している。   This heat exchanger is optimal as an EGR cooler, and a bypass pipe 3 is disposed on the axis of a cylindrical casing 9, and a large number of tubes 1 are interposed between the casing 9 and the bypass pipe 3 as shown in FIG. Are arranged in a spiral shape. The tube 1 is formed flat, an inner fin 16 is interposed therein, and a transverse section is curved in an arc shape.

チューブ１及びバイパス管３の両端部は、一対のヘッダ４とヘッダ（バルブ付ヘッダ）５に貫通する。そして、その貫通部はろう付け固定されている。図において右側のヘッダ（バルブ付ヘッダ）５には出口パイプ20ａが突設され、そのヘッダ出入口６とバイパス管３のバイパス出入口７とがエルボ型開閉バルブ８によって接離自在に連通する。   Both ends of the tube 1 and the bypass pipe 3 penetrate a pair of headers 4 and a header (header with valve) 5. And the penetration part is fixed by brazing. In the drawing, an outlet pipe 20 a is projected from the right header (header with valve) 5, and the header inlet / outlet 6 and the bypass inlet / outlet 7 of the bypass pipe 3 communicate with each other by an elbow type opening / closing valve 8.

エルボ型開閉バルブ８は図３に示す如く、その軸線がエルボ状に曲折され、その一方のバルブ口22の孔縁部に舌片状の閉塞体10が一体的に接続されている。閉塞体10はヘッダ（バルブ付ヘッダ）５の内周面に整合する弧状に湾曲されている。なお、ヘッダ（バルブ付ヘッダ）５は円筒状に形成され、その右端がフランジ部17を介してアクチュエータ12により閉塞されている。閉塞体10には図において左側にバルブ口22に近接して開口部11が形成され、それらは閉塞体10が回動することでヘッダ出入口６に整合する。その閉塞体10の右側はヘッダ出入口6を閉塞できるようになっている。   As shown in FIG. 3, the elbow-type opening / closing valve 8 has its axis bent in an elbow shape, and a tongue-like closing body 10 is integrally connected to the hole edge of one of the valve ports 22. The closing body 10 is curved in an arc shape matching the inner peripheral surface of the header (header with valve) 5. The header (header with valve) 5 is formed in a cylindrical shape, and the right end thereof is closed by the actuator 12 via the flange portion 17. An opening 11 is formed on the left side of the closing body 10 in the vicinity of the valve port 22 on the left side of the drawing, and these are aligned with the header entrance 6 as the closing body 10 rotates. The right side of the closing body 10 can close the header entrance 6.

そして、エルボ型開閉バルブ８に設けた出力端嵌着部21にアクチュエータ12の出力端18が接続され、エルボ型開閉バルブ８をバイパス管３の軸線周りに回動自在に構成する。   The output end 18 of the actuator 12 is connected to the output end fitting portion 21 provided in the elbow type opening / closing valve 8, and the elbow type opening / closing valve 8 is configured to be rotatable around the axis of the bypass pipe 3.

ケーシング９には図１及び図２に示す如く、その両端外周に一対の膨出した水タンク部13が設けられ、その端部に入口パイプ19と出口パイプ20が接続されている。そして、冷却水14が入口パイプ19からケーシング９内に流入し、各チューブ１の外周を流通して、他方の出口パイプ20から外部に流出される。   As shown in FIGS. 1 and 2, the casing 9 is provided with a pair of swelled water tank portions 13 on the outer periphery of both ends, and an inlet pipe 19 and an outlet pipe 20 are connected to the ends thereof. Then, the cooling water 14 flows into the casing 9 from the inlet pipe 19, flows through the outer periphery of each tube 1, and flows out from the other outlet pipe 20.

また、第１流体として排気ガス15が図１の如く、ヘッダ４側から流入する。そして、図１及び図４の状態では排気ガス15はバイパス管３内を流通し、エルボ型開閉バルブ８を介して外部に導かれる。   Further, as shown in FIG. 1, exhaust gas 15 flows from the header 4 side as the first fluid. In the state shown in FIGS. 1 and 4, the exhaust gas 15 circulates in the bypass pipe 3 and is guided to the outside through the elbow opening / closing valve 8.

つぎに、アクチュエータ12を駆動しエルボ型開閉バルブ８を図５の状態にすると、エルボ型開閉バルブ８のバルブ口22はヘッダ(バルブ付ヘッダ)５の内周面により閉塞される。そして、閉塞体10の開口部11とヘッダ出入口６とが整合し、排気ガス15は各チューブ１内を流通して、ヘッダ出入口６から外部に導かれる。この状態がＥＧＲの通常使用状態である。   Next, when the actuator 12 is driven to bring the elbow type on / off valve 8 into the state shown in FIG. 5, the valve port 22 of the elbow type on / off valve 8 is blocked by the inner peripheral surface of the header (header with valve) 5. The opening 11 of the closing body 10 and the header inlet / outlet 6 are aligned with each other, and the exhaust gas 15 flows through each tube 1 and is guided to the outside from the header inlet / outlet 6. This state is a normal use state of EGR.

また、排気ガスの温度が低温の場合には、それが図４の状態になり、排気ガスの過冷却を防止する。そして、図５の通常状態から図４の状態に移行する間、ヘッダ出入口６は開口部11とバルブ口22との両者に跨がり、徐々に図５から図４に移行する。   Further, when the temperature of the exhaust gas is low, it becomes the state of FIG. 4 and prevents the exhaust gas from being overcooled. Then, during the transition from the normal state of FIG. 5 to the state of FIG. 4, the header inlet / outlet 6 straddles both the opening 11 and the valve port 22 and gradually transitions from FIG. 5 to FIG. 4.

次に、アクチュエータ12によってエルボ型開閉バルブ８をさらに左回動させると図６の如く閉塞体10によってヘッダ出入口６が閉塞される。この閉塞状態は図５の位置からエルボ型バルブ８を右回動してもよい。いずれの場合にも、図１において排気ガス15自体が熱交換器に流入することを阻止する。   Next, when the elbow type opening / closing valve 8 is further rotated counterclockwise by the actuator 12, the header entrance 6 is closed by the closing body 10 as shown in FIG. In this closed state, the elbow valve 8 may be rotated to the right from the position shown in FIG. In either case, in FIG. 1, the exhaust gas 15 itself is prevented from flowing into the heat exchanger.

なお、このときもエルボ型開閉バルブ８の回動位置は、図４と図６との中間位置を通る。これらのバルブ回転度とＥＧＲバルブの開度とバイパスバルブの開度との関係を図１０に示し、それに基づくガス流量及びガス出口温度の関係を図１１に示す。ここにおいてＥＧＲバルブの開度とは、開口部11とヘッダ出入口６が整合する度合いであり、バイパスバルブの開度とはバルブ口22とヘッダ出入口６が整合する度合いである。   At this time as well, the pivot position of the elbow-type opening / closing valve 8 passes through an intermediate position between FIG. 4 and FIG. FIG. 10 shows the relationship among these valve rotation degrees, the opening degree of the EGR valve, and the opening degree of the bypass valve, and FIG. 11 shows the relation between the gas flow rate and the gas outlet temperature based on the relation. Here, the opening degree of the EGR valve is a degree to which the opening 11 and the header inlet / outlet 6 are aligned, and the opening degree of the bypass valve is a degree to which the valve port 22 and the header inlet / outlet 6 are aligned.

図１０においてＥＧＲバルブの最大開度は図５の状態であり、それから僅かにエルボ型バルブ８が左に移動するとバイパスバルブが開き始める。バイパスバルブの最大開度のときは図４の状態である。また両バルブ共に閉の位置は図６の状態であるが、完全に閉塞する過程において、バルブ口22が徐々に閉塞する。   In FIG. 10, the maximum opening of the EGR valve is the state shown in FIG. 5, and when the elbow valve 8 slightly moves to the left, the bypass valve starts to open. FIG. 4 shows the state when the bypass valve is at the maximum opening. Further, the closed position of both valves is the state shown in FIG. 6, but the valve port 22 is gradually closed in the process of complete closing.

（変形例）
次に、図７はエルボ型開閉バルブ８をリンク機構24によってバイパス管３の軸線周りに回転させる説明図である。同図では図示にないアクチュエータの出力をリンク機構24に連結し、それを図７（Ｂ）の如く矢印方向に移動することにより、エルボ型開閉バルブ８を回動するものである。 (Modification)
Next, FIG. 7 is an explanatory view in which the elbow type on-off valve 8 is rotated around the axis of the bypass pipe 3 by the link mechanism 24. In this figure, the output of an actuator not shown in the figure is connected to a link mechanism 24 and moved in the direction of the arrow as shown in FIG.

次に図８は、エルボ型開閉バルブ８の他の例であり、この例はエルボ型の曲がり部からバルブ口22と逆向きにバランス部材8aが突設され、それがヘッダ（バルブ付ヘッダ）５内面に摺接するように構成されたものである。このバランス部材8aの存在により、エルボ型開閉バルブ８を円滑に回転駆動することができる。   Next, FIG. 8 shows another example of the elbow-type opening / closing valve 8. In this example, a balance member 8a is projected from the elbow-shaped bent portion in the direction opposite to the valve port 22, and this is the header (header with valve). 5 is configured to be in sliding contact with the inner surface. Due to the presence of the balance member 8a, the elbow open / close valve 8 can be smoothly rotated.

次に図９は、エルボ型開閉バルブ８のさらに他の例であり、閉塞体10が円筒状に形成された、その外周がヘッダ(5) 内面に摺接するように構成されたものである。このように構成することによりエルボ型開閉バルブ８をさらに円滑に回転駆動することができる。   Next, FIG. 9 shows still another example of the elbow type opening / closing valve 8 in which the closing body 10 is formed in a cylindrical shape, and the outer periphery thereof is slidably in contact with the inner surface of the header (5). By comprising in this way, the elbow type | mold on-off valve 8 can be rotationally driven more smoothly.

本発明の熱交換器の縦断面図であって、図２におけるI‐I矢視断面図。It is a longitudinal cross-sectional view of the heat exchanger of this invention, Comprising: The II arrow directional cross-sectional view in FIG. 同熱交換器の横断面図であって、図１におけるII‐II矢視断面図。It is a cross-sectional view of the heat exchanger, and is a cross-sectional view taken along the line II-II in FIG. 同熱交換器に用いられるエルボ型開閉バルブ８の斜視図。The perspective view of the elbow type on-off valve 8 used for the same heat exchanger. 図１におけるIV‐IV矢視断面図。IV-IV arrow sectional drawing in FIG. エルボ型開閉バルブ８を移動させ開口部11とヘッダ出入口６を整合させた状態を示す横断面図。The cross-sectional view which shows the state which moved the elbow type opening-and-closing valve 8, and aligned the opening part 11 and the header entrance / exit 6. FIG.

同熱交換器において、エルボ型開閉バルブ８を更に回転させ閉塞体10によってヘッダ出入口６を閉塞した状態を示す横断面図。In the same heat exchanger, a cross-sectional view showing a state in which the elbow-type opening / closing valve 8 is further rotated and the header inlet / outlet 6 is closed by the closing body 10. 本発明の熱交換器の他の例を示す縦断面図及び右側面図。The longitudinal cross-sectional view and right view which show the other example of the heat exchanger of this invention. 本発明の熱交換器に用いられるエルボ型開閉バルブ８の他の例を示す斜視図。The perspective view which shows the other example of the elbow type on-off valve 8 used for the heat exchanger of this invention. 本発明の熱交換器に用いられるエルボ型開閉バルブ８のさらに他の例を示す斜視図。The perspective view which shows the further another example of the elbow type | mold on-off valve 8 used for the heat exchanger of this invention. バルブ回転度とＥＧＲバルブの開度及びバイパスバルブの開度を示す図。The figure which shows the valve opening degree, the opening degree of an EGR valve, and the opening degree of a bypass valve. バルブ回転度とガス出口温度及びガス流量との関係を示す図。The figure which shows the relationship between a valve | bulb rotational degree, a gas exit temperature, and a gas flow rate.

符号の説明Explanation of symbols

１ チューブ
２ コア
３ バイパス管
４ ヘッダ
５ ヘッダ（バルブ付ヘッダ） 1 Tube 2 Core 3 Bypass pipe 4 Header 5 Header (Header with valve)

６ ヘッダ出入口
７ バイパス出入口
８ エルボ型開閉バルブ
8a バランス部材
９ ケーシング 6 Header entry / exit 7 Bypass entry / exit 8 Elbow type opening / closing valve
8a Balance member 9 Casing

10 閉塞体
11 開口部
12 アクチュエータ
13 水タンク部
14 冷却水 10 Occlusion body
11 opening
12 Actuator
13 Water tank
14 Cooling water

15 排気ガス
16 インナーフィン
17 フランジ部
18 出力端
19 入口パイプ 15 exhaust gas
16 Inner fin
17 Flange
18 Output terminal
19 Inlet pipe

20 出口パイプ
20a 出口パイプ
21 出力端嵌着部
22 バルブ口
23 バルブ口
24 リンク機構 20 outlet pipe
20a outlet pipe
21 Output end fitting
22 Valve port
23 Valve port
24 Link mechanism

Claims (5)

多数のチューブ(1) が並列されたコア(2) と、
そのコア(2) に近接して並列されたバイパス管(3) と、
夫々のチューブ(1) の両端およびバイパス管(3) の両端が貫通された一対のヘッダ(4) (5) と、
一方の前記ヘッダであって開閉バルブが収納されるバルブ付ヘッダ(5) の内周が円筒状またはその一部をなし、その円筒の内周に開口するヘッダ出入口(6) と、そのバルブ付ヘッダ(5) の前記円筒の軸線上に開口するバイパス出入口(7) と、
そのヘッダ出入口(6) とバイパス出入口(7) とを接離自在にエルボ状に連通し、前記軸線の回りに回動自在に設けられ、その一方のバルブ口(22)がバルブ付ヘッダ(5) の内面に摺接するようにしたエルボ型開閉バルブ(8) と、
その一方のバルブ口(22)の開口縁部に断面弧状に延在し、それが前記エルボ型開閉バルブ(8) の回動に伴い、そのヘッダ出入口(6) を開閉自在に閉塞するようにした閉塞体(10)と、
前記コア(2) およびバイパス管(3) の外周を被嵌し、両ヘッダ(4) (5) 間を連結するケーシング(9) と、
を具備し、前記ヘッダ(4) (5) に第１流体が導かれ、前記ケーシング(9) 内に第２流体が導かれるバイパス切替バルブ付熱交換器。 A core (2) in which a number of tubes (1) are arranged in parallel;
A bypass pipe (3) juxtaposed in close proximity to the core (2);
A pair of headers (4) (5) through which both ends of each tube (1) and both ends of the bypass pipe (3) pass,
One of the headers, the inner periphery of the valve-equipped header (5) in which the open / close valve is accommodated is cylindrical or part thereof, and the header inlet / outlet (6) that opens to the inner periphery of the cylinder, A bypass outlet (7) opening on the axis of the cylinder of the header (5);
The header inlet / outlet (6) and the bypass inlet / outlet (7) are connected to and separated from each other in an elbow shape, and are provided so as to be rotatable around the axis, and one of the valve ports (22) is provided with a header with valve (5 An elbow-type on-off valve (8) that is in sliding contact with the inner surface of
One of the valve openings (22) extends in an arc shape at the opening edge so that the header inlet / outlet (6) can be opened and closed as the elbow-type opening / closing valve (8) rotates. Occluded body (10),
A casing (9) that fits the outer periphery of the core (2) and the bypass pipe (3) and connects between the headers (4) and (5);
A heat exchanger with a bypass switching valve in which a first fluid is guided to the header (4) (5) and a second fluid is guided to the casing (9). 請求項１において、
前記閉塞体(10)にバルブ口(22)に近接して開口部(11)が形成され、その開口部(11)とバルブ口(22)とが前記エルボ型開閉バルブ(8) の回動に伴い、そのヘッダ出入口(6) に跨がるように構成されたバイパス切替バルブ付熱交換器。 In claim 1,
An opening (11) is formed in the closing body (10) in the vicinity of the valve port (22), and the opening (11) and the valve port (22) rotate the elbow-type opening / closing valve (8). Accordingly, a heat exchanger with a bypass switching valve configured to straddle the header inlet / outlet (6). 請求項１または請求項２において、
バルブ付ヘッダ(5) の軸線方向一端にバルブ駆動用アクチュエータ(12)が設けられ、その出力端(18)が前記エルボ型開閉バルブ(8) に連結され、
そのエルボ型の曲がり部から前記一方のバルブ口(22)の向きと逆向きにバランス部材(8a)が突設され、それがヘッダ(5) 内面に摺接するように構成されたバイパス切替バルブ付熱交換器。 In claim 1 or claim 2,
A valve drive actuator (12) is provided at one axial end of the valve header (5), and its output end (18) is connected to the elbow-type on-off valve (8).
A balance switching member (8a) protrudes from the elbow-shaped bent part in the direction opposite to the direction of the one valve port (22), and is provided with a bypass switching valve configured to be in sliding contact with the inner surface of the header (5). Heat exchanger. 請求項１または請求項２において、
バルブ付ヘッダ(5) の軸線方向一端にバルブ駆動用アクチュエータ(12)が設けられ、その出力端(18)が前記エルボ型開閉バルブ(8) に連結され、
前記閉塞体(10)が円筒状に形成され、その外周がヘッダ(5) 内面に摺接するように構成されたバイパス切替バルブ付熱交換器。 In claim 1 or claim 2,
A valve drive actuator (12) is provided at one axial end of the valve header (5), and its output end (18) is connected to the elbow-type on-off valve (8).
A heat exchanger with a bypass switching valve configured such that the closing body (10) is formed in a cylindrical shape, and the outer periphery thereof is in sliding contact with the inner surface of the header (5). 請求項１〜請求項３のいずれかにおいて、
熱交換器がＥＧＲクーラとして使用され、第１流体として排気ガス(15)が前記ヘッダ(4) (5) に導かれ、第２流体として冷却水(14)がケーシング(9) 内に導かれるバイパス切替バルブ付熱交換器。 In any one of Claims 1-3,
A heat exchanger is used as an EGR cooler, exhaust gas (15) is led to the header (4) (5) as a first fluid, and cooling water (14) is led as a second fluid into the casing (9). Heat exchanger with bypass switching valve .
JP2005123187A 2005-04-21 2005-04-21 Heat exchanger with bypass switching valve Expired - Fee Related JP4574425B2 (en)

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KR20150050921A (en) * 2013-11-01 2015-05-11 현대중공업 주식회사 Smoke yube type boiler for waste heat
KR101896326B1 (en) * 2016-09-09 2018-09-07 현대자동차 주식회사 Water-cooled egr cooler

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