JP2017015358A - Exhaust heat recovery device - Google Patents

Exhaust heat recovery device Download PDF

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JP2017015358A
JP2017015358A JP2015135052A JP2015135052A JP2017015358A JP 2017015358 A JP2017015358 A JP 2017015358A JP 2015135052 A JP2015135052 A JP 2015135052A JP 2015135052 A JP2015135052 A JP 2015135052A JP 2017015358 A JP2017015358 A JP 2017015358A
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heat recovery
exhaust heat
pipe
recovery device
outer tube
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洋平 一柳
Yohei Ichiyanagi
洋平 一柳
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Marelli Corp
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Calsonic Kansei Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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Abstract

PROBLEM TO BE SOLVED: To provide an exhaust heat recovery device that can reduce man hours for manufacturing and is facilitated in manufacturing.SOLUTION: The exhaust heat recovery device 1 includes: an inner pipe 3 through which a high-temperature exhaust gas flows; an outer pipe 5 mounted to the inner pipe 3 to form an exhaust heat recovery medium flow passage 7 in an outer periphery part of the inner pipe 3; and a joint member 11 for mounting piping 9 connected to the exhaust heat recovery medium flow passage 7 to the outer pipe 5.SELECTED DRAWING: Figure 1

Description

本発明は、排気熱回収器に係り、特に、内管の外周部に排気熱回収媒体流路が設けられているものに関する。   The present invention relates to an exhaust heat recovery device, and more particularly, to an exhaust heat recovery medium flow path provided on an outer peripheral portion of an inner pipe.

従来、図４で示すように、排気ガスが流れる内管２１２の外側に外管２１３を設けることで、内管２１２の外周部に環状の排気熱回収媒体流路２０１を形成している排気熱回収器２１５が知られている（たとえば、特許文献１の図１０参照）。   Conventionally, as shown in FIG. 4, exhaust heat that forms an annular exhaust heat recovery medium flow path 201 on the outer periphery of the inner pipe 212 by providing an outer pipe 213 outside the inner pipe 212 through which exhaust gas flows. A recovery device 215 is known (see, for example, FIG. 10 of Patent Document 1).

また、図５で示すように、上記環状の排気熱回収媒体流路２０１には、排気熱回収媒体流路２０１に排気熱回収媒体（たとえば、水）を供給する配管２０３と、排気熱回収媒体流路２０１から排気熱回収媒体を回収する配管２０５とが接続されている。   Further, as shown in FIG. 5, the annular exhaust heat recovery medium flow path 201 includes a pipe 203 for supplying an exhaust heat recovery medium (for example, water) to the exhaust heat recovery medium flow path 201, and an exhaust heat recovery medium. A pipe 205 that recovers the exhaust heat recovery medium from the flow path 201 is connected.

各配管２０３，２０５は、車載レイアウトの要求により、たとえば、お互いが平行になるようにして、排気熱回収媒体流路２０１の片側に配置されることが望まれる。   It is desirable that the pipes 203 and 205 are arranged on one side of the exhaust heat recovery medium flow path 201 so as to be parallel to each other, for example, according to the requirement of the in-vehicle layout.

特開２０１０−２２９８４７号公報JP 2010-229847 A

ところで、排気熱回収器２１５の性能への影響の回避のため、また、ロバスト設計の必要性から、図５に破線で示す三角状の部位２０７を、各配管２０３，２０５から削除する場合がある。しかし、三角状の部位２０７を削除することで、各配管２０３，２０５の製造工数（切断工数等）が増え、また、排気熱回収媒体流路２０１への各配管２０３，２０５の組付け工数が増えてしまうという問題がある。   By the way, in order to avoid the influence on the performance of the exhaust heat recovery unit 215 and because of the necessity of robust design, the triangular portion 207 indicated by the broken line in FIG. . However, by deleting the triangular portion 207, the manufacturing man-hours (cutting man-hours, etc.) of the pipes 203, 205 are increased, and the assembly man-hours of the pipes 203, 205 to the exhaust heat recovery medium flow channel 201 are reduced. There is a problem that it increases.

そこで、外管２１３に、図６で示すような筒状の接続部位２０９を設け、この接続部位２０９に各配管２０３，２０５を接続する方式が考えられる。   Therefore, a method is conceivable in which the outer pipe 213 is provided with a cylindrical connection portion 209 as shown in FIG.

しかし、外管２１３に、立ち上がり高さの高い部位２１１を備えた筒状の接続部位２０９を設けるとなると、外管２１３の製造が難しくなるという問題がある。   However, when the outer tube 213 is provided with a cylindrical connection portion 209 having a portion 211 having a high rising height, there is a problem that it is difficult to manufacture the outer tube 213.

本発明は、上記問題点に鑑みてなされたものであり、製造工数を削減することができるとともに、製造が容易である排気熱回収器を提供することを目的とする。   The present invention has been made in view of the above problems, and an object of the present invention is to provide an exhaust heat recovery device that can reduce the number of manufacturing steps and is easy to manufacture.

本発明は、高温の排気ガスが流れる内管と、前記内管に設置され、前記内管の外周部に排気熱回収媒体流路を形成する外管と、前記排気熱回収媒体流路に接続される配管を、前記外管に設置するための接合部材とを有する排気熱回収器である。   The present invention includes an inner pipe through which high-temperature exhaust gas flows, an outer pipe that is installed in the inner pipe and forms an exhaust heat recovery medium flow path on the outer periphery of the inner pipe, and is connected to the exhaust heat recovery medium flow path It is an exhaust heat recovery device which has a joining member for installing piping performed on the outer pipe.

本発明によれば、製造工数を削減することができるとともに、製造が容易である排気熱回収器を提供することができるという効果を奏する。   According to the present invention, it is possible to provide an exhaust heat recovery device that can reduce the number of manufacturing steps and can be easily manufactured.

本発明の実施形態に係る排気熱回収器の外管とこの外管に接続される配管との接続構造を示す断面図である。It is sectional drawing which shows the connection structure of the outer tube | pipe of the exhaust heat recovery device which concerns on embodiment of this invention, and piping connected to this outer tube | pipe. １つめ目の変形例に係る排気熱回収器の外管とこの外管に接続される配管との接続構造を示す断面図である。It is sectional drawing which shows the connection structure of the outer tube | pipe of the exhaust heat recovery device which concerns on the 1st modification, and piping connected to this outer tube | pipe. ２つめ目の変形例に係る排気熱回収器の外管とこの外管に接続される配管との接続構造を示す断面図である。It is sectional drawing which shows the connection structure of the outer tube | pipe of the exhaust heat recovery device which concerns on the 2nd modification, and piping connected to this outer tube | pipe. 従来の排気熱回収器の概略構成を示す断面図である。It is sectional drawing which shows schematic structure of the conventional exhaust heat recovery device. 図４におけるＶ−Ｖ断面を示す図であって、従来の排気熱回収器およびこの改造例を示す図である。It is a figure which shows the VV cross section in FIG. 4, Comprising: It is a figure which shows the conventional exhaust heat recovery device and this modification. 従来の排気熱回収器の改造例を示す図である。It is a figure which shows the example of remodeling of the conventional exhaust heat recovery device.

本発明の実施形態に係る排気熱回収器（排気熱回収装置）１は、従来の排気熱回収器と同様にして、筒状（たとえば、円筒状）に形成された内管（内側部材）３と、筒状（たとえば、円筒状）に形成された外管（外側部材）５とを備えて構成されている。内管３の内部には、自動車等のエンジンから排出される高温の排気ガス（他の高温のガスでもよいし、さらに、高温の流体であってもよい。）が流れるようになっている。また、内管３の外側に外管５が設置されることで、内管３の外周部に内管３と外管５とで環状（たとえば、円環状）の排気熱回収媒体流路７が形成されている。   An exhaust heat recovery device (exhaust heat recovery device) 1 according to an embodiment of the present invention has an inner tube (inner member) 3 formed in a cylindrical shape (for example, a cylindrical shape) in the same manner as a conventional exhaust heat recovery device. And an outer tube (outer member) 5 formed in a cylindrical shape (for example, a cylindrical shape). A high-temperature exhaust gas (other high-temperature gas or a high-temperature fluid) discharged from an engine such as an automobile flows through the inner pipe 3. In addition, since the outer tube 5 is installed outside the inner tube 3, an annular (for example, annular) exhaust heat recovery medium flow path 7 is formed between the inner tube 3 and the outer tube 5 on the outer periphery of the inner tube 3. Is formed.

排気熱回収器１には、図１で示すように、配管（供給配管）９と、接合部材（アダプタ）１１とが設けられている。排気熱回収器１の環状の排気熱回収媒体流路７には、排気熱回収媒体流路７に排気熱回収媒体（たとえば、水）を供給する供給配管９が接続されている。接合部材１１は、排気熱回収媒体流路７に接続される供給配管９を外管５に設置するために使用されている。   As shown in FIG. 1, the exhaust heat recovery device 1 is provided with a pipe (supply pipe) 9 and a joining member (adapter) 11. A supply pipe 9 for supplying an exhaust heat recovery medium (for example, water) to the exhaust heat recovery medium flow path 7 is connected to the annular exhaust heat recovery medium flow path 7 of the exhaust heat recovery device 1. The joining member 11 is used for installing the supply pipe 9 connected to the exhaust heat recovery medium flow path 7 in the outer pipe 5.

なお、図１等では示していないが、供給配管９の場合と同様にして、排気熱回収媒体流路７には、排気熱回収媒体流路７から排気熱回収媒体を回収する回収配管（図示せず）が、接合部材（図示せず）を用いて接続されている。以下、供給配管９の接続の態様について詳しく説明し、回収配管についての説明は省略する。   Although not shown in FIG. 1 and the like, in the same manner as in the case of the supply pipe 9, the exhaust heat recovery medium flow path 7 has a recovery pipe for collecting the exhaust heat recovery medium from the exhaust heat recovery medium flow path 7 (FIG. (Not shown) are connected using a joining member (not shown). Hereinafter, the connection mode of the supply pipe 9 will be described in detail, and description of the recovery pipe will be omitted.

外管５は、筒状（たとえば、円筒状）の素材を塑性加工（たとえば、プレス加工）することによって形成されている。接合部材１１も、筒状（たとえば、円筒状）の素材を塑性加工（たとえば、プレス加工）することによって形成されている。   The outer tube 5 is formed by plastic processing (for example, pressing) a cylindrical (for example, cylindrical) material. The joining member 11 is also formed by plastic processing (for example, pressing) a cylindrical (for example, cylindrical) material.

供給配管９は筒状（たとえば、円筒状）に形成されている。外管５の、接合部材１１を介して供給配管９に接続される部位には、外側に向かって立ち上がっている筒状（たとえば、円筒状）の接続部位１３が形成されている。   The supply pipe 9 is formed in a cylindrical shape (for example, a cylindrical shape). A tubular (for example, cylindrical) connection portion 13 that rises outward is formed at a portion of the outer tube 5 that is connected to the supply pipe 9 via the joining member 11.

接合部材１１は、筒状（たとえば、円筒状）に形成されており、一方の端部（外管５側の端部）の内部に外管５の接続部位１３が嵌っており、他方の端部（外管５とは反対側の端部）の内部に供給配管９が嵌っている。   The joining member 11 is formed in a cylindrical shape (for example, a cylindrical shape), and the connection portion 13 of the outer tube 5 is fitted inside one end portion (end portion on the outer tube 5 side), and the other end. A supply pipe 9 is fitted inside the portion (the end opposite to the outer tube 5).

なお、接合部材１１の一方の端部の外部に外管５の接続部位１３が嵌っており、接合部材１１の他方の端部の外部に供給配管９が嵌っている構成であってもよい。   In addition, the connection part 13 of the outer tube 5 may be fitted outside the one end of the joining member 11, and the supply pipe 9 may be fitted outside the other end of the joining member 11.

外管５の円筒状の接続部位１３の中心軸Ｃ１は、外管５の中心軸に対してねじれの位置にある。さらに、好ましくは、外管５の円筒状の接続部位１３の中心軸と、外管５の中心軸（図示せず）とは、所定の方向から見たときにお互いが直交している。上記所定の方向とは、外管５の円筒状の接続部位１３の中心軸Ｃ１を含み外管５の中心軸に平行な平面に対して直交する方向（図１の矢印Ａ１の方向）である。   The central axis C <b> 1 of the cylindrical connection portion 13 of the outer tube 5 is in a twisted position with respect to the central axis of the outer tube 5. Further, preferably, the central axis of the cylindrical connecting portion 13 of the outer tube 5 and the central axis (not shown) of the outer tube 5 are orthogonal to each other when viewed from a predetermined direction. The predetermined direction is a direction orthogonal to a plane including the central axis C1 of the cylindrical connection portion 13 of the outer tube 5 and parallel to the central axis of the outer tube 5 (the direction of the arrow A1 in FIG. 1). .

外管５の円筒状の接続部位１３の立ち上がり高さｈ１は、円筒状の接続部位１３の全周にわたってほぼ一定になっている。したがって、円筒状の接続部位１３の先端１５は、斜めな円形状（楕円状）になっている。なお、円筒状の接続部位１３の基端１６も斜めな円形状（楕円状）になっている。   The rising height h1 of the cylindrical connecting portion 13 of the outer tube 5 is substantially constant over the entire circumference of the cylindrical connecting portion 13. Therefore, the tip 15 of the cylindrical connection portion 13 has an oblique circular shape (elliptical shape). In addition, the base end 16 of the cylindrical connection part 13 is also an oblique circular shape (elliptical shape).

接合部材１１は、小径部１７と、大径部１９と、環状の鍔部２１とを備えて構成されている。小径部１７の中心軸と、大径部１９の中心軸と、鍔部２１の中心軸とは、お互いが一致している。   The joining member 11 includes a small diameter part 17, a large diameter part 19, and an annular flange part 21. The central axis of the small-diameter portion 17, the central axis of the large-diameter portion 19, and the central axis of the flange portion 21 coincide with each other.

小径部１７の内径は、供給配管９の外径と等しくなっており、大径部１９の内径は、接続部位１３の外径と等しくなっており、供給配管９の外径は、接続部位１３の内径と等しくなっている。   The inner diameter of the small diameter portion 17 is equal to the outer diameter of the supply pipe 9, the inner diameter of the large diameter portion 19 is equal to the outer diameter of the connection part 13, and the outer diameter of the supply pipe 9 is equal to the connection part 13. Is equal to the inner diameter.

外管５に接合部材１１と供給配管９とを設置した状態では、接合部材１１の中心軸と、接続部位１３の中心軸Ｃ１とはお互いが一致しており、接合部材１１の大径部１９の内壁のほぼ全面が接続部位１３の外面のほぼ全面に接触し、接合部材１１の小径部１７の内壁のほぼ全面が供給配管９の外面の一部に接触し、供給配管９の外面の一部が、接続部位１３の内面の一部に接触しており、接合部材１１の鍔部２１は、外管５の、接続部位１３のまわりの部位に接触している。   In a state in which the joining member 11 and the supply pipe 9 are installed on the outer pipe 5, the central axis of the joining member 11 and the central axis C <b> 1 of the connection site 13 coincide with each other, and the large-diameter portion 19 of the joining member 11. Substantially the entire inner wall of the connecting portion 13 is in contact with the entire outer surface of the connection portion 13, and the entire inner wall of the small diameter portion 17 of the joining member 11 is in contact with a part of the outer surface of the supply pipe 9. The part is in contact with a part of the inner surface of the connection part 13, and the flange part 21 of the joining member 11 is in contact with a part of the outer tube 5 around the connection part 13.

次に、内管３と外管５とによって排気熱回収媒体流路７が形成されているものに、接合部材１１と供給配管９とを設置する手順について説明する。   Next, a procedure for installing the joining member 11 and the supply pipe 9 in the case where the exhaust heat recovery medium flow path 7 is formed by the inner pipe 3 and the outer pipe 5 will be described.

まず、大径部１９に接続部位１３が嵌り、鍔部２１が外管５に当接するようにして、外管５に接合部材１１を一体的に設置する。   First, the connection member 13 is fitted into the large-diameter portion 19, and the joining member 11 is integrally installed on the outer tube 5 so that the flange portion 21 contacts the outer tube 5.

続いて、外周面の一部が、接続部位１３と小径部１７とに嵌るようにして、接合部材１１や外管５に供給配管９を一体的に設置する。   Subsequently, the supply pipe 9 is integrally installed on the joining member 11 and the outer pipe 5 so that a part of the outer peripheral surface is fitted to the connection portion 13 and the small diameter portion 17.

次に、排気熱回収器１の動作について説明する。   Next, the operation of the exhaust heat recovery device 1 will be described.

自動車のエンジンが稼働しており、高温の排気ガスが内管３内を流れており、供給配管９から排気熱回収媒体が供給され、回収配管で排気熱回収媒体が回収されることで、排気熱回収媒体流路７内を排気熱回収媒体が流れている。   The engine of the automobile is in operation, high-temperature exhaust gas flows through the inner pipe 3, the exhaust heat recovery medium is supplied from the supply pipe 9, and the exhaust heat recovery medium is recovered by the recovery pipe. An exhaust heat recovery medium flows in the heat recovery medium flow path 7.

このとき、内管３内に設けられている排気熱回収部材（図示せず）で排気ガスの熱を吸収し、この吸収した熱が、排気熱回収部材と内管３とを通って、排気熱回収媒体流路７内の排気熱回収媒体を温める。   At this time, the heat of the exhaust gas is absorbed by an exhaust heat recovery member (not shown) provided in the inner pipe 3, and the absorbed heat passes through the exhaust heat recovery member and the inner pipe 3 to be exhausted. The exhaust heat recovery medium in the heat recovery medium flow path 7 is warmed.

排気熱回収器１によれば、接合部材１１が設けられているので、供給配管９や外管５を特殊な形状にしなくても供給配管９と外管５とをつなげることができ、製造工数を削減することができるとともに製造が容易になる。   According to the exhaust heat recovery device 1, since the joining member 11 is provided, the supply pipe 9 and the outer pipe 5 can be connected without the supply pipe 9 and the outer pipe 5 having a special shape. And can be manufactured easily.

すなわち、供給配管９の端部を斜めに切断する必要がなく、しかも、外管５の接続部位１３の高さを高くする必要がないので、供給配管９や外管５の製造工数、製造コストを削減することができる。   That is, it is not necessary to cut the end of the supply pipe 9 at an angle, and it is not necessary to increase the height of the connection portion 13 of the outer pipe 5. Can be reduced.

また、排気熱回収器１によれば、外管５や接合部材１１に対する供給配管９の位置が、供給配管９の出入り方向（図１等の上下方向）で若干ずれても、排気熱回収媒体流路７内を流れる排気熱回収媒体の流れの態様の変化が小さいので、供給配管９の外管５への設置がしやすくなる。   Further, according to the exhaust heat recovery device 1, even if the position of the supply pipe 9 with respect to the outer pipe 5 and the joining member 11 is slightly shifted in the direction of entering and exiting the supply pipe 9 (vertical direction in FIG. 1 and the like), the exhaust heat recovery medium Since the change in the aspect of the flow of the exhaust heat recovery medium flowing in the flow path 7 is small, the supply pipe 9 can be easily installed on the outer pipe 5.

また、排気熱回収器１によれば、外管５の接続部位１３の高さｈ１がほぼ一定であって低くなっているので、外管５を塑性加工によって容易に製造することができる。   Moreover, according to the exhaust heat recovery device 1, since the height h1 of the connection portion 13 of the outer tube 5 is substantially constant and low, the outer tube 5 can be easily manufactured by plastic working.

また、排気熱回収器１によれば、供給配管９が筒状に形成されており、外管５の接続部位１３が筒状に形成されており、接合部材１１が筒状に形成されており、接合部材１１の一方の端部の内部に外管５の接続部位１３が嵌っており、接合部材１１の他方の端部の内部に供給配管９が嵌っているので、外管５に対する接合部材１１および供給配管９の位置決めが容易になる。   Further, according to the exhaust heat recovery device 1, the supply pipe 9 is formed in a cylindrical shape, the connection portion 13 of the outer tube 5 is formed in a cylindrical shape, and the joining member 11 is formed in a cylindrical shape. Since the connecting portion 13 of the outer tube 5 is fitted inside one end of the joining member 11 and the supply pipe 9 is fitted inside the other end of the joining member 11, the joining member for the outer tube 5 is provided. 11 and supply piping 9 can be easily positioned.

ところで、図２で示すように、接合部材１１の小径部１７の長さを長くし、供給配管９の端部が、接合部材１１の小径部１７のみに嵌っている構成であってもよい。   By the way, as shown in FIG. 2, the length of the small diameter portion 17 of the joining member 11 may be increased, and the end of the supply pipe 9 may be fitted only in the small diameter portion 17 of the joining member 11.

また、図３で示すように、外管５に筒状の接続部位１３を設けない構成であってもよい。すなわち、外管５の、接合部材１１を介して供給配管９と接続される部位に、貫通孔（たとえば、円形状の貫通孔）２３を形成し、接合部材１１を、一方の端部に鍔部２１を備えた筒状に形成してもよい。そして、一方の端部の鍔部２１が外管５の貫通孔２３の縁の外側の全周で外管５に接し、他方の端部の内部に供給配管９が嵌っているように構成してもよい。   Moreover, as shown in FIG. 3, the structure which does not provide the cylindrical connection site | part 13 in the outer tube 5 may be sufficient. That is, a through hole (for example, a circular through hole) 23 is formed in a portion of the outer tube 5 connected to the supply pipe 9 via the joining member 11, and the joining member 11 is attached to one end portion. You may form in the cylinder provided with the part 21. FIG. The flange portion 21 at one end is in contact with the outer tube 5 on the entire outer periphery of the edge of the through hole 23 of the outer tube 5 and the supply pipe 9 is fitted inside the other end. May be.

なお、図３で示す排気熱回収器１の場合、接合部材１１の他方の端部の外部に供給配管９が嵌っている構成であってもよい。   In the case of the exhaust heat recovery device 1 shown in FIG. 3, the supply pipe 9 may be fitted outside the other end of the joining member 11.

このように構成では、接合部材１１を介して供給配管９と接続される外管５の部位に、貫通孔２３しか形成されていないので、外管５の製造が一層容易になっている。   In this configuration, since only the through hole 23 is formed in the portion of the outer tube 5 connected to the supply pipe 9 via the joining member 11, the outer tube 5 can be manufactured more easily.

１ 排気熱回収器
３ 内管
５ 外管
７ 排気熱回収媒体流路
９ 配管（供給配管）
１１ 接合部材
１３ 接続部位
２１ 鍔部
２３ 貫通孔
DESCRIPTION OF SYMBOLS 1 Exhaust heat recovery device 3 Inner pipe 5 Outer pipe 7 Exhaust heat recovery medium flow path 9 Piping (supply piping)
DESCRIPTION OF SYMBOLS 11 Joining member 13 Connection site | part 21 buttock part 23 Through-hole

Claims (4)

高温の排気ガスが流れる内管と、
前記内管に設置され、前記内管の外周部に排気熱回収媒体流路を形成する外管と、
前記排気熱回収媒体流路に接続される配管を、前記外管に設置するための接合部材と、
を有することを特徴とする排気熱回収器。 An inner pipe through which hot exhaust gas flows;
An outer pipe that is installed in the inner pipe and forms an exhaust heat recovery medium flow path in the outer periphery of the inner pipe;
A joining member for installing a pipe connected to the exhaust heat recovery medium flow path in the outer pipe;
An exhaust heat recovery device comprising: 請求項１に記載の排気熱回収器において、
前記外管の、前記接合部材を介して前記配管と接続される部位には、筒状の接続部位が形成されており、
前記接合部材は、筒状に形成されており、一方の端部の内部もしくは外部に前記外管の接続部位が嵌っており、他方の端部の内部もしくは外部に前記配管が嵌っていることを特徴とする排気熱回収器。 The exhaust heat recovery device according to claim 1,
In the portion of the outer pipe that is connected to the pipe via the joining member, a cylindrical connecting portion is formed,
The joining member is formed in a cylindrical shape, the connection portion of the outer tube is fitted inside or outside one end, and the pipe is fitted inside or outside the other end. A featured exhaust heat recovery unit. 請求項１に記載の排気熱回収器において、
前記外管の、前記接合部材を介して前記配管と接続される部位には、貫通孔が形成されており、
前記接合部材は、一方の端部に鍔部を備えた筒状に形成されており、前記一方の端部の鍔部が前記外管の貫通孔の縁の外側の全周で前記外管に接しており、他方の端部の内部もしくは外部に前記配管が嵌っていることを特徴とする排気熱回収器。 The exhaust heat recovery device according to claim 1,
A through hole is formed in a portion of the outer pipe connected to the pipe via the joining member.
The joining member is formed in a cylindrical shape having a flange portion at one end portion, and the flange portion of the one end portion is connected to the outer tube at the entire circumference outside the edge of the through hole of the outer tube. The exhaust heat recovery device is characterized in that the pipe is fitted inside or outside the other end. 請求項１〜請求項３のいずれか１項に記載の排気熱回収器において、
前記外管は、素材を塑性加工することによって形成されていることを特徴とする排気熱回収器。

The exhaust heat recovery device according to any one of claims 1 to 3,
The exhaust pipe according to claim 1, wherein the outer tube is formed by plastic processing of a material.

JP2015135052A 2015-07-06 2015-07-06 Exhaust heat recovery device Pending JP2017015358A (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015135052A JP2017015358A (en) 2015-07-06 2015-07-06 Exhaust heat recovery device

Publications (1)

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JP2017015358A true JP2017015358A (en) 2017-01-19

Family

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Country Status (1)

Country Link
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