WO2020153149A1 - Exhaust cooling member - Google Patents

Exhaust cooling member Download PDF

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Publication number
WO2020153149A1
WO2020153149A1 PCT/JP2020/000593 JP2020000593W WO2020153149A1 WO 2020153149 A1 WO2020153149 A1 WO 2020153149A1 JP 2020000593 W JP2020000593 W JP 2020000593W WO 2020153149 A1 WO2020153149 A1 WO 2020153149A1
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WO
WIPO (PCT)
Prior art keywords
divided body
exhaust
cooling member
exhaust gas
main body
Prior art date
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PCT/JP2020/000593
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French (fr)
Japanese (ja)
Inventor
一秀 高田
隼人 齋藤
雄紀 池田
Original Assignee
いすゞ自動車株式会社
Priority date (The priority date 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 date listed.)
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Application filed by いすゞ自動車株式会社 filed Critical いすゞ自動車株式会社
Priority to CN202080010331.7A priority Critical patent/CN113330200B/en
Publication of WO2020153149A1 publication Critical patent/WO2020153149A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/20—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having flared outlets, e.g. of fish-tail shape

Definitions

  • the present disclosure relates to an exhaust cooling member attached to an end of an exhaust pipe.
  • Some vehicles such as trucks have an exhaust cooling member attached to the end of the exhaust pipe through which the exhaust gas of the engine flows to cool the exhaust gas with air.
  • the exhaust cooling member has a cavity through which the exhaust gas flows and an inflow port into which the air flows, and cools the exhaust gas with the inflowing air.
  • the exhaust gas with a high temperature flows out vigorously.
  • the exhaust gas may adversely affect the person or the object.
  • the present disclosure has been made in view of these points, and an object thereof is to provide an exhaust cooling member capable of suppressing an adverse effect on the outside due to outflow of exhaust gas.
  • an exhaust cooling member that is attached to an end portion of an exhaust pipe and cools exhaust gas, the main body having a cavity in which the exhaust gas flows, and the main body
  • An inflow portion which is provided at a first end portion connected to an exhaust pipe and allows air to flow into the cavity portion
  • an outflow port which is provided at a second end portion of the main body portion and through which the exhaust gas and the air flow out, are provided.
  • An exhaust cooling member wherein an upper wall of the outflow portion faces downward from an upper wall of an intermediate portion of the main body portion between the inflow portion and the outflow portion.
  • the main body portion includes an upper divided body forming an upper wall and a lower divided body forming a lower wall, and the upper wall of the outflow portion of the upper divided body is above the intermediate portion of the upper divided body. It may be downward facing the wall.
  • the upper divided body extends toward the second end side from the lower divided body, and an upper wall of an extending portion of the upper divided body is located above the intermediate portion of the upper divided body. It may be downward facing the wall.
  • the width of the extending portion of the upper divided body may be increased from the first end side toward the second end side.
  • an exhaust cooling member that is attached to an end portion of an exhaust pipe and cools exhaust gas, the main body having a cavity in which the exhaust gas flows, and the main body
  • An inflow part which is provided on the first end side connected to the exhaust pipe and allows air to flow into the cavity, and a flow, which is provided on the second end side of the main body part and causes the exhaust gas and the air to flow out.
  • an outlet formed with an outlet wherein an angle formed by a wall of the outlet with respect to an axial direction of the exhaust pipe is a wall of an intermediate portion between the inlet and the outlet of the main body.
  • An exhaust cooling member is provided that is larger than an angle formed by the portion with respect to the axial direction.
  • the main body portion includes a first division body and a second division body, and an angle formed by the wall portion of the outflow portion in the first division body with respect to the axial direction is equal to the angle in the first division body.
  • the wall portion of the intermediate portion may be larger than the angle formed with respect to the axial direction.
  • the first divided body extends to the second end side from the second divided body, and an angle formed by the wall portion of the extending portion of the first divided body with respect to the axial direction is:
  • the wall portion of the intermediate portion of the first divided body may be larger than the angle formed with respect to the axial direction.
  • the width of the extending portion of the first divided body may be increased from the first end side toward the second end side.
  • FIG. 1 is a schematic diagram for explaining a part of the configuration of a vehicle 1 to which an exhaust cooling member 10 according to an embodiment of the present disclosure is attached.
  • FIG. 2 is a diagram for explaining the configuration of the exhaust cooling member 10.
  • FIG. 3 is a diagram for explaining the configuration of the exhaust cooling member 10.
  • FIG. 4 is a schematic diagram for explaining the flow of exhaust gas and air in the exhaust cooling member 10.
  • FIG. 1 is a schematic diagram for explaining a part of a configuration of a vehicle 1 to which an exhaust cooling member 10 according to an embodiment is attached.
  • the exhaust cooling member 10 is attached to the rear end portion 4 of the exhaust pipe 3 of the vehicle 1 (here, a truck). Specifically, the exhaust cooling member 10 is attached to the exhaust port of the exhaust pipe 3.
  • Exhaust pipe 3 is connected to the engine of vehicle 1, and the exhaust gas of the engine flows.
  • a purification device 5 for purifying exhaust gas is provided in the middle of the exhaust pipe 3.
  • the purification device 5 includes, for example, a DPF (Diesel Particulate Filter) that collects particulate matter in the exhaust gas and an SCR (Selective Catalytic Reduction) that reduces NOx in the exhaust gas.
  • the purification device 5 is fixed to the side frame 8 of the vehicle 1 via a bracket 9.
  • the exhaust cooling member 10 cools the exhaust gas flowing through the exhaust pipe 3 with air and causes the cooled exhaust gas to flow out to the atmosphere. Specifically, the exhaust cooling member 10 cools the exhaust gas that has passed through the purification device 5 with the taken-in air.
  • FIGS. 2 to 4. 2 and 3 are views for explaining the configuration of the exhaust cooling member 10.
  • FIG. 4 is a schematic diagram for explaining the flow of exhaust gas and air in the exhaust cooling member 10.
  • the flow of exhaust gas is shown by a dashed arrow
  • the flow of air is shown by a dashed-dotted arrow.
  • the exhaust cooling member 10 has a main body portion 20, a fixing portion 30, an inflow portion 40, and an outflow portion 50.
  • the body portion 20 is formed in a tubular shape.
  • one end side (an example of the first end portion) of the main body portion 20 is connected to the exhaust pipe 3 via the fixing portion 30.
  • the other end of the main body 20 (an example of the second end) is an opening communicating with the atmosphere.
  • a cavity 21 is formed inside the main body 20, as shown in FIG. 2, as shown in FIG. 2, a cavity 21 is formed inside the main body 20, as shown in FIG. 2, a cavity 21 is formed inside the main body 20, as shown in FIG. 2, a cavity 21 is formed inside the main body 20, as shown in FIG. 2, a cavity 21 is formed inside the main body 20, as shown in FIG. 2, a cavity 21 is formed inside the main body 20, as shown in FIG. 2, a cavity 21 is formed inside the main body 20, as shown in FIG. 2, a cavity 21 is formed inside the main body 20, as shown in FIG. 2, a cavity 21 is formed
  • the cavity 21 is a space formed along the axial direction of the main body 20.
  • the exhaust gas that has passed through the rear end portion 4 of the exhaust pipe 3 flows through the hollow portion 21. Specifically, the exhaust gas flows in from one end side of the body portion 20, and the exhaust gas flows out from the other end side of the body portion 20. Air flows into the hollow portion 21 from the inflow portion 40, and the air is mixed with the exhaust gas, so that the temperature of the exhaust gas is lowered (cooled).
  • the cavity 21 becomes wider from one end of the main body 20 toward the other end. As a result, the flow velocity of the exhaust gas flowing through the cavity 21 gradually decreases and flows out so as to diffuse. As a result, it is possible to suppress the occurrence of heat damage caused by the concentrated outflow of exhaust gas having a high flow velocity.
  • the main body 20 is vertically divided into two parts by an upper divided body 22 and a lower divided body 24 as shown in FIG. That is, the upper divided body 22 and the lower divided body 24 overlap each other to form the main body portion 20.
  • one of the upper divided body 22 and the lower divided body 24 may constitute an example of the first divided body, and the other of the upper divided body 22 and the lower divided body 24 may constitute an example of the second divided body. ..
  • the upper divided body 22 may form an example of the first divided body
  • the lower divided body 24 may form an example of the second divided body.
  • the upper divided body 22 forms the upper side of the main body 20 as shown in FIG. 4, and the lower divided body 24 forms the lower side of the main body 20.
  • the upper divided body 22 forms an upper wall of the main body 20 and a part of both side walls
  • the lower divided body 24 forms a lower wall of the main body 20 and a part of both side walls. Is made.
  • the upper divided body 22 is formed in a size that covers the lower divided body 24 from above.
  • the lower divided body 24 is formed shorter than the upper divided body 22. Specifically, as shown in FIG. 3, the upper divided body 22 extends outward from the lower divided body 24 on the other end side of the main body portion 20. That is, the end 22 a of the upper divided body 22 is located outside the end 24 a of the lower divided body 24. Therefore, air further flows in from the end portion 24a of the lower divided body 24 and mixes with the exhaust gas, so that the exhaust gas can be cooled. The width of the extending portion of the upper divided body 22 increases toward the other end side. Therefore, the exhaust gas flows out so as to diffuse.
  • the fixing portion 30 is a portion that connects the main body portion 20 to the rear end portion 4 of the exhaust pipe 3, as shown in FIG.
  • the fixed part 30 is formed in a tubular shape.
  • One end portion 32 of the fixed portion 30 in the axial direction is fixed to the rear end portion 4. Since the inner diameter of the fixed portion 30 is substantially the same as the outer diameter of the rear end portion 4, there is no gap between the one end portion 32 and the rear end portion 4.
  • the fixed portion 30 is connected to the main body portion 20 via plate-shaped brackets 32a, 32b, 32c. Specifically, the fixing portion 30 is fixed to the outer peripheral surface of the upper divided body 22 by a bracket 32a. Further, the fixed portion 30 is fixed to the outer peripheral surface of the lower divided body 24 by brackets 32b and 32c.
  • the brackets 32a, 32b, 32c are provided radially when viewed from the fixed portion 30.
  • the inflow part 40 is provided on one end side in the axial direction of the main body part 20 as shown in FIG. 3, and allows air to flow into the cavity part 21 (see FIG. 4).
  • the inflow portion 40 is provided in the large diameter portion 41 in which the inner diameter of the main body portion 20 is larger than the outer diameter of the fixed portion 30.
  • An opening 42 (FIG. 4) is formed at the end of the large diameter portion 41.
  • the area around the fixed portion 30 in the opening 42 serves as the inflow portion 40.
  • Air around the main body 20 flows into the cavity 21 via the inflow portion 40.
  • the air flowing into the cavity 21 mixes with the exhaust gas flowing in the cavity 21 and lowers (cools) the temperature of the exhaust gas.
  • the outflow section 50 is provided on the other end side of the main body section 20 in the axial direction as shown in FIG. 3, and allows the exhaust gas and the air flowing in the cavity section 21 to flow out (see FIG. 4).
  • the outflow portion 50 is formed with an outflow port 52 (FIG. 3) through which exhaust gas passes.
  • the exhaust gas and the air mixed in the cavity 21 flow out to the atmosphere through the outlet 52.
  • the intermediate part between the inflow part 40 and the outflow part 50 in the main-body part 20 is called the intermediate part 60.
  • the main body portion 20 is not formed straight, but is formed so that the upper wall 54 of the outflow portion 50 faces downward. That is, as shown in FIG. 4, the upper wall 54 of the outflow portion 50 faces downward than the upper wall 64 of the intermediate portion 60.
  • the angle formed by the upper wall 54 of the outflow portion 50 (an example of the wall portion of the outflow portion) with respect to the axial direction of the exhaust pipe 4 is the angle of the castle wall 64 of the intermediate portion 60 (an example of the wall portion of the intermediate portion). It is larger than the angle formed with respect to the axial direction of the exhaust pipe 4.
  • the outlet 52 also faces downward, and the exhaust gas flowing through the hollow portion 21 flows out downward via the outlet 52.
  • the main body 20 is divided into the upper divided body 22 and the lower divided body 24 as described above.
  • the upper wall 54 of the upper divided body 22 on the outflow portion 50 side faces downward than the upper wall 64 of the upper divided body 22 on the intermediate portion 60 side. That is, the shape of the upper wall of the upper divided body 22 of the upper divided body 22 and the lower divided body 24 is bent.
  • the upper divided body 22 extends to the other end side than the lower divided body 24 as described above.
  • the upper wall 54 of the extending portion extending from the lower divided body 24 of the upper divided body 22 faces downward than the upper wall 64 of the upper divided body 22 on the intermediate portion 60 side.
  • the extending portion of the upper divided body 22 is gradually bent (preferably, smoothly bent) so that the upper wall 54 faces downward. As a result, the exhaust gas flowing through the hollow portion 21 easily flows downward along the upper wall 54, as shown in FIG.
  • the width of the extending portion of the upper divided body 22 increases from one end side to the other end side. That is, the width of the upper wall 54 of the outflow portion 50 is larger than the width of the upper wall 64 of the intermediate portion 60. As a result, the exhaust gas is easily diffused by the upper wall 54 of the outflow portion 50 to a wide area below.
  • the installation space of the main body portion 20 in the vertical direction is smaller than that in the case where the entire main body portion 20 is obliquely arranged. It can be made smaller (see Fig. 1).
  • the exhaust gas flowing through the exhaust pipe 3 flows into the cavity 21 of the exhaust cooling member 10 connected to the rear end portion 4 of the exhaust pipe 3.
  • the air around the exhaust cooling member 10 flows into the hollow portion 21 from the inflow portion 40 so as to be drawn in by the negative pressure in the hollow portion 21.
  • the air flowing into the cavity 21 is mixed with the exhaust gas to cool the exhaust gas.
  • the exhaust gas cooled by the air flowing in from the inflow part 40 is further cooled by being mixed with the air flowing in from the end 24a of the lower split body 24. After that, the exhaust gas and the air flow out from the outflow portion 50. At this time, since the upper wall 54 of the outflow portion 50 faces downward, the exhaust gas and the air flow out so as to diffuse downward.
  • the exhaust cooling member 10 of the above-described embodiment includes a main body portion 20 in which a cavity portion 21 through which exhaust gas flows is formed, an inflow portion 40 provided on one end side of the main body portion 20 for inflowing air, and another main body portion 20. And an outflow portion 50 provided with an outflow port 52 which is provided on the end side and through which exhaust gas and air flow out.
  • the upper wall 54 of the outflow portion 50 faces downward than the upper wall 64 of the intermediate portion 60 between the inflow portion 40 and the outflow portion 50 of the main body portion 20.
  • the exhaust gas that has flowed along the upper wall 54 is discharged from the outlet 52, for example, toward the lower road surface.
  • the exhaust cooling member 10 is mounted substantially horizontally (see FIG. 1), the exhaust gas can be effectively discharged downward (road surface).
  • the end portion 22a of the upper divided body 22 of the main body portion 20 is extended outward than the end portion 24a of the lower divided body 24, but the present invention is not limited to this.
  • the end portion 24a of the lower divided body 24 may extend outward by the same length as the end portion 22a of the upper divided body 22.
  • the width of the extending portion of the upper divided body 22 is increased from the one end side toward the other end side, but the width is not limited to this.
  • the width of the extending portion of the upper divided body 22 may be constant.
  • the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist thereof. is there.
  • the specific embodiment of device distribution/integration is not limited to the above embodiment, and all or part of the device may be functionally or physically distributed/integrated in arbitrary units.
  • You can Further, a new embodiment that occurs due to an arbitrary combination of a plurality of embodiments is also included in the embodiment of the present invention. The effect of the new embodiment produced by the combination also has the effect of the original embodiment.
  • the present invention has an effect of suppressing an adverse effect on the outside due to outflow of exhaust gas, and is useful as an exhaust cooling member and the like.

Abstract

An exhaust cooling member 10 that is attached to a rear end section 4 of an exhaust pipe 3 and that cools exhaust gas includes: a body part 20 in which a hollow section 21, through which exhaust gas flows, is formed; an inflow section 40 that is provided at one end of the body part 20, at which the body part 20 is connected to the exhaust pipe 3, and that lets air flow into the hollow section 21; and an outflow section 50 that is provided at the other end of the body part 20 and in which an outlet 52, from which the exhaust gas and the air flow out, is formed. An upper wall 54 of the outflow section 50 faces further toward a lower side than an upper wall 64 of an intermediate section 60 does.

Description

排気冷却部材Exhaust cooling member
　本開示は、排気管の端部に取り付けられる排気冷却部材に関する。 The present disclosure relates to an exhaust cooling member attached to an end of an exhaust pipe.
　トラック等の車両の中には、エンジンの排気ガスが流れる排気管の端部に、排気ガスを空気で冷却させる排気冷却部材が取り付けられたものがある。排気冷却部材は、排気ガスが流れる空洞部と、空気を流入させる流入口とを有し、流入した空気で排気ガスを冷却する。 Some vehicles such as trucks have an exhaust cooling member attached to the end of the exhaust pipe through which the exhaust gas of the engine flows to cool the exhaust gas with air. The exhaust cooling member has a cavity through which the exhaust gas flows and an inflow port into which the air flows, and cools the exhaust gas with the inflowing air.
日本国特開２０１０－１２７１７７号公報Japanese Unexamined Patent Publication No. 2010-127177
　ところで、排気冷却部材において排気ガスが流出する流出部の構造によっては、温度が高い排気ガスが勢いよく流出される。そして、排気ガスの流出方向の先に人や物が存在する場合には、排気ガスが人や物に悪影響を及ぼすおそれがある。 By the way, depending on the structure of the outflow part where the exhaust gas flows out in the exhaust cooling member, the exhaust gas with a high temperature flows out vigorously. When a person or an object exists ahead of the outflow direction of the exhaust gas, the exhaust gas may adversely affect the person or the object.
　そこで、本開示はこれらの点に鑑みてなされたものであり、排気ガスの流出による外部への悪影響を抑制可能な排気冷却部材を提供することを目的とする。 Therefore, the present disclosure has been made in view of these points, and an object thereof is to provide an exhaust cooling member capable of suppressing an adverse effect on the outside due to outflow of exhaust gas.
　本開示の一の態様においては、排気管の端部に取り付けられ、排気ガスを冷却する排気冷却部材であって、前記排気ガスが流れる空洞部が形成された本体部と、前記本体部の前記排気管と連結される第1端部に設けられ、空気を前記空洞部に流入させる流入部と、前記本体部の第２端部に設けられ、前記排気ガス及び前記空気を流出させる流出口が形成された流出部と、を備え、前記流出部の上壁が、前記本体部の前記流入部と前記流出部の間の中間部の上壁よりも下方を向いている、排気冷却部材を提供する。 In one aspect of the present disclosure, an exhaust cooling member that is attached to an end portion of an exhaust pipe and cools exhaust gas, the main body having a cavity in which the exhaust gas flows, and the main body An inflow portion, which is provided at a first end portion connected to an exhaust pipe and allows air to flow into the cavity portion, and an outflow port, which is provided at a second end portion of the main body portion and through which the exhaust gas and the air flow out, are provided. An exhaust cooling member, wherein an upper wall of the outflow portion faces downward from an upper wall of an intermediate portion of the main body portion between the inflow portion and the outflow portion. To do.
　また、前記本体部は、上壁を成す上分割体と、下壁を成す下分割体とを含み、前記上分割体における前記流出部の上壁が、前記上分割体における前記中間部の上壁よりも下方を向いていることとしてもよい。 Further, the main body portion includes an upper divided body forming an upper wall and a lower divided body forming a lower wall, and the upper wall of the outflow portion of the upper divided body is above the intermediate portion of the upper divided body. It may be downward facing the wall.
　また、前記上分割体は、前記下分割体よりも前記第２端部側に延在しており、前記上分割体の延在部分の上壁が、前記上分割体における前記中間部の上壁よりも下方を向いていることとしてもよい。 Further, the upper divided body extends toward the second end side from the lower divided body, and an upper wall of an extending portion of the upper divided body is located above the intermediate portion of the upper divided body. It may be downward facing the wall.
　また、前記上分割体の前記延在部分の幅は、前記第1端部側から前記第２端部側へ向かうにつれて大きくなっていることとしてもよい。 Also, the width of the extending portion of the upper divided body may be increased from the first end side toward the second end side.
　本開示の他の態様においては、排気管の端部に取り付けられ、排気ガスを冷却する排気冷却部材であって、前記排気ガスが流れる空洞部が形成された本体部と、前記本体部の前記排気管と連結される第1端部側に設けられ、空気を前記空洞部に流入させる流入部と、前記本体部の第２端部側に設けられ、前記排気ガス及び前記空気を流出させる流出口が形成された流出部と、を備え、前記流出部の壁部が前記排気管の軸方向に対して成す角度が、前記本体部の前記流入部と前記流出部の間の中間部の壁部が前記軸方向に対して成す角度よりも大きい、排気冷却部材を提供する。 In another aspect of the present disclosure, an exhaust cooling member that is attached to an end portion of an exhaust pipe and cools exhaust gas, the main body having a cavity in which the exhaust gas flows, and the main body An inflow part, which is provided on the first end side connected to the exhaust pipe and allows air to flow into the cavity, and a flow, which is provided on the second end side of the main body part and causes the exhaust gas and the air to flow out. And an outlet formed with an outlet, wherein an angle formed by a wall of the outlet with respect to an axial direction of the exhaust pipe is a wall of an intermediate portion between the inlet and the outlet of the main body. An exhaust cooling member is provided that is larger than an angle formed by the portion with respect to the axial direction.
　前記本体部は、第1分割体と、第２分割体とを含み、前記第１分割体における前記流出部の前記壁部が前記軸方向に対して成す角度が、前記第１分割体における前記中間部の前記壁部が前記軸方向に対して成す角度よりも大きいこととしてもよい。 The main body portion includes a first division body and a second division body, and an angle formed by the wall portion of the outflow portion in the first division body with respect to the axial direction is equal to the angle in the first division body. The wall portion of the intermediate portion may be larger than the angle formed with respect to the axial direction.
　前記第１分割体は、前記第２分割体よりも前記第２端部側に延在しており、前記第１分割体の延在部分の壁部が前記軸方向に対して成す角度が、前記第１分割体における前記中間部の前記壁部が前記軸方向に対して成す前記角度よりも大きいこととしてもよい。 The first divided body extends to the second end side from the second divided body, and an angle formed by the wall portion of the extending portion of the first divided body with respect to the axial direction is: The wall portion of the intermediate portion of the first divided body may be larger than the angle formed with respect to the axial direction.
　前記第１分割体の前記延在部分の幅は、前記第1端部側から前記第２端部側へ向かうにつれて大きくなっていることとしてもよい。 The width of the extending portion of the first divided body may be increased from the first end side toward the second end side.
　本開示によれば、排気ガスの流出による外部への悪影響を抑制できるという効果を奏する。 According to the present disclosure, it is possible to suppress the adverse effect on the outside due to the outflow of exhaust gas.
図１は、本開示の一の実施形態に係る排気冷却部材１０が取り付けられた車両１の構成の一部を説明するための模式図である。FIG. 1 is a schematic diagram for explaining a part of the configuration of a vehicle 1 to which an exhaust cooling member 10 according to an embodiment of the present disclosure is attached. 図２は、排気冷却部材１０の構成を説明するための図である。FIG. 2 is a diagram for explaining the configuration of the exhaust cooling member 10. 図３は、排気冷却部材１０の構成を説明するための図である。FIG. 3 is a diagram for explaining the configuration of the exhaust cooling member 10. 図４は、排気冷却部材１０での排気ガス及び空気の流れを説明するための模式図である。FIG. 4 is a schematic diagram for explaining the flow of exhaust gas and air in the exhaust cooling member 10.
　＜排気冷却部材の構成＞
　本開示の一の実施形態に係る排気冷却部材が取り付けられた車両の概略構成について、図１を参照しながら説明する。 <Structure of exhaust cooling member>
A schematic configuration of a vehicle to which an exhaust cooling member according to an embodiment of the present disclosure is attached will be described with reference to FIG. 1.
　図１は、一の実施形態に係る排気冷却部材１０が取り付けられた車両１の構成の一部を説明するための模式図である。排気冷却部材１０は、図１に示すように、車両１（ここではトラック）の排気管３の後端部４に取り付けられている。具体的には、排気冷却部材１０は、排気管３の排気口に取り付けられている。 FIG. 1 is a schematic diagram for explaining a part of a configuration of a vehicle 1 to which an exhaust cooling member 10 according to an embodiment is attached. As shown in FIG. 1, the exhaust cooling member 10 is attached to the rear end portion 4 of the exhaust pipe 3 of the vehicle 1 (here, a truck). Specifically, the exhaust cooling member 10 is attached to the exhaust port of the exhaust pipe 3.
　排気管３は、車両１のエンジンと連結されており、エンジンの排気ガスが流れる。排気管３の途中には、排気ガスを浄化する浄化装置５が設けられている。浄化装置５は、例えば排気ガス中の粒子状物質を捕集するＤＰＦ（Diesel Particulate Filter）や、排気ガス中のＮＯｘを還元反応させるＳＣＲ（Selective Catalytic Reduction）を含む。浄化装置５は、車両１のサイドフレーム８にブラケット９を介して固定されている。 Exhaust pipe 3 is connected to the engine of vehicle 1, and the exhaust gas of the engine flows. A purification device 5 for purifying exhaust gas is provided in the middle of the exhaust pipe 3. The purification device 5 includes, for example, a DPF (Diesel Particulate Filter) that collects particulate matter in the exhaust gas and an SCR (Selective Catalytic Reduction) that reduces NOx in the exhaust gas. The purification device 5 is fixed to the side frame 8 of the vehicle 1 via a bracket 9.
　排気冷却部材１０は、排気管３を流れる排気ガスを空気で冷却し、冷却した排気ガスを大気に流出させる。具体的には、排気冷却部材１０は、浄化装置５を通過した排気ガスを、取り込んだ空気で冷却する。 The exhaust cooling member 10 cools the exhaust gas flowing through the exhaust pipe 3 with air and causes the cooled exhaust gas to flow out to the atmosphere. Specifically, the exhaust cooling member 10 cools the exhaust gas that has passed through the purification device 5 with the taken-in air.
　次に、図２～図４を参照しながら、排気冷却部材１０の詳細構成について説明する。
　図２及び図３は、排気冷却部材１０の構成を説明するための図である。図４は、排気冷却部材１０での排気ガス及び空気の流れを説明するための模式図である。なお、図４では、排気ガスの流れが破線の矢印で示され、空気の流れが一点鎖線の矢印で示されている。 Next, a detailed configuration of the exhaust cooling member 10 will be described with reference to FIGS. 2 to 4.
2 and 3 are views for explaining the configuration of the exhaust cooling member 10. FIG. 4 is a schematic diagram for explaining the flow of exhaust gas and air in the exhaust cooling member 10. In addition, in FIG. 4, the flow of exhaust gas is shown by a dashed arrow, and the flow of air is shown by a dashed-dotted arrow.
　排気冷却部材１０は、図２及び図３に示すように、本体部２０と、固定部３０と、流入部４０と、流出部５０とを有する。
　本体部２０は、筒状に形成されている。本体部２０の一端側（第1端部の一例）は、図３に示すように、固定部３０を介して排気管３と連結されている。本体部２０の他端側（第２端部の一例）は、大気に連通する開口となっている。本体部２０の内部には、図２に示すように、空洞部２１が形成されている。 As shown in FIGS. 2 and 3, the exhaust cooling member 10 has a main body portion 20, a fixing portion 30, an inflow portion 40, and an outflow portion 50.
The body portion 20 is formed in a tubular shape. As shown in FIG. 3, one end side (an example of the first end portion) of the main body portion 20 is connected to the exhaust pipe 3 via the fixing portion 30. The other end of the main body 20 (an example of the second end) is an opening communicating with the atmosphere. Inside the main body 20, as shown in FIG. 2, a cavity 21 is formed.
　空洞部２１は、本体部２０の軸方向に沿って形成された空間である。空洞部２１には、排気管３の後端部４を通過した排気ガスが流れる。具体的には、本体部２０の一端側から排気ガスが流入し、本体部２０の他端側から排気ガスが流出する。空洞部２１内には流入部４０から空気が流入し、空気が排気ガスと混合することで排気ガスの温度が低くなる（冷却される）。空洞部２１は、本体部２０の一端側から他端側へ向かうにつれて広くなっている。これにより、空洞部２１を流れる排気ガスの流速が次第に遅くなり、かつ拡散するように流出する。この結果、流速が速い排気ガスが集中して流出することに起因して発生する熱害の発生を抑制できる。 The cavity 21 is a space formed along the axial direction of the main body 20. The exhaust gas that has passed through the rear end portion 4 of the exhaust pipe 3 flows through the hollow portion 21. Specifically, the exhaust gas flows in from one end side of the body portion 20, and the exhaust gas flows out from the other end side of the body portion 20. Air flows into the hollow portion 21 from the inflow portion 40, and the air is mixed with the exhaust gas, so that the temperature of the exhaust gas is lowered (cooled). The cavity 21 becomes wider from one end of the main body 20 toward the other end. As a result, the flow velocity of the exhaust gas flowing through the cavity 21 gradually decreases and flows out so as to diffuse. As a result, it is possible to suppress the occurrence of heat damage caused by the concentrated outflow of exhaust gas having a high flow velocity.
　本体部２０は、本実施形態では、図２に示すように上分割体２２と下分割体２４で上下に２分割されている。すなわち、上分割体２２と下分割体２４が重なって、本体部２０が構成されている。なお、上分割体２２及び下分割体２４のうち一方が第1分割体の一例を構成し、上分割体２２及び下分割体２４のうち他方が第２分割体の一例を構成してもよい。上分割体２２が第1分割体の一例を構成し、下分割体２４が第２分割体の一例を構成してもよい。 In the present embodiment, the main body 20 is vertically divided into two parts by an upper divided body 22 and a lower divided body 24 as shown in FIG. That is, the upper divided body 22 and the lower divided body 24 overlap each other to form the main body portion 20. Note that one of the upper divided body 22 and the lower divided body 24 may constitute an example of the first divided body, and the other of the upper divided body 22 and the lower divided body 24 may constitute an example of the second divided body. .. The upper divided body 22 may form an example of the first divided body, and the lower divided body 24 may form an example of the second divided body.
　上分割体２２は、図４に示すように本体部２０の上側を形成し、下分割体２４は本体部２０の下側を形成している。上分割体２２は、図２に示すように、本体部２０の上壁と両側壁の一部とを成し、下分割体２４は、本体部２０の下壁と両側壁の一部とを成している。上分割体２２は、図２に示すように、下分割体２４を上から覆うような大きさに形成されている。 The upper divided body 22 forms the upper side of the main body 20 as shown in FIG. 4, and the lower divided body 24 forms the lower side of the main body 20. As shown in FIG. 2, the upper divided body 22 forms an upper wall of the main body 20 and a part of both side walls, and the lower divided body 24 forms a lower wall of the main body 20 and a part of both side walls. Is made. As shown in FIG. 2, the upper divided body 22 is formed in a size that covers the lower divided body 24 from above.
　下分割体２４は、上分割体２２よりも短く形成されている。具体的には、上分割体２２は、図３に示すように、本体部２０の他端側において下分割体２４よりも外方へ延在している。すなわち、上分割体２２の端部２２ａは、下分割体２４の端部２４ａよりも外方に位置している。このため、下分割体２４の端部２４ａから更に空気が流入して排気ガスと混合するため、排気ガスを冷却できる。なお、上分割体２２の延在部分の幅は、他端側に向かうにつれて大きくなっている。このため、排気ガスが、拡散するように流出する。 The lower divided body 24 is formed shorter than the upper divided body 22. Specifically, as shown in FIG. 3, the upper divided body 22 extends outward from the lower divided body 24 on the other end side of the main body portion 20. That is, the end 22 a of the upper divided body 22 is located outside the end 24 a of the lower divided body 24. Therefore, air further flows in from the end portion 24a of the lower divided body 24 and mixes with the exhaust gas, so that the exhaust gas can be cooled. The width of the extending portion of the upper divided body 22 increases toward the other end side. Therefore, the exhaust gas flows out so as to diffuse.
　固定部３０は、図３に示すように、本体部２０を排気管３の後端部４に連結する部分である。固定部３０は、管状に形成されている。固定部３０の軸方向の一端部３２が、後端部４に固定されている。固定部３０の内径は、後端部４の外径とほぼ同じ大きさであるため、一端部３２と後端部４の間に隙間は無い。 The fixing portion 30 is a portion that connects the main body portion 20 to the rear end portion 4 of the exhaust pipe 3, as shown in FIG. The fixed part 30 is formed in a tubular shape. One end portion 32 of the fixed portion 30 in the axial direction is fixed to the rear end portion 4. Since the inner diameter of the fixed portion 30 is substantially the same as the outer diameter of the rear end portion 4, there is no gap between the one end portion 32 and the rear end portion 4.
　固定部３０は、本体部２０に板状のブラケット３２ａ、３２ｂ、３２ｃを介して連結されている。具体的には、固定部３０は、上分割体２２の外周面にブラケット３２ａによって固定されている。また、固定部３０は、下分割体２４の外周面にブラケット３２ｂ、３２ｃによって固定されている。ブラケット３２ａ、３２ｂ、３２ｃは、固定部３０から見て放射状に設けられている。 The fixed portion 30 is connected to the main body portion 20 via plate-shaped brackets 32a, 32b, 32c. Specifically, the fixing portion 30 is fixed to the outer peripheral surface of the upper divided body 22 by a bracket 32a. Further, the fixed portion 30 is fixed to the outer peripheral surface of the lower divided body 24 by brackets 32b and 32c. The brackets 32a, 32b, 32c are provided radially when viewed from the fixed portion 30.
　流入部４０は、図３に示すように本体部２０の軸方向の一端側に設けられ、空洞部２１内に空気を流入させる（図４参照）。流入部４０は、本体部２０の内径が固定部３０の外径よりも大きい大径部４１に設けられている。大径部４１の端には、開口４２（図４）が形成されている。そして、開口４２のうち固定部３０の周囲の領域が、流入部４０となっている。本体部２０の周囲の空気が、流入部４０を介して空洞部２１内に流入する。空洞部２１内へ流入した空気は、空洞部２１内を流れる排気ガスと混合して、排気ガスの温度を下げる（冷却する）。 The inflow part 40 is provided on one end side in the axial direction of the main body part 20 as shown in FIG. 3, and allows air to flow into the cavity part 21 (see FIG. 4). The inflow portion 40 is provided in the large diameter portion 41 in which the inner diameter of the main body portion 20 is larger than the outer diameter of the fixed portion 30. An opening 42 (FIG. 4) is formed at the end of the large diameter portion 41. The area around the fixed portion 30 in the opening 42 serves as the inflow portion 40. Air around the main body 20 flows into the cavity 21 via the inflow portion 40. The air flowing into the cavity 21 mixes with the exhaust gas flowing in the cavity 21 and lowers (cools) the temperature of the exhaust gas.
　流出部５０は、図３に示すように本体部２０の軸方向の他端側に設けられ、空洞部２１内を流れる排気ガス及び空気を流出させる（図４参照）。流出部５０には、排気ガスが通過する流出口５２（図３）が形成されている。空洞部２１内で混合した排気ガス及び空気は、流出口５２から大気へ流出する。なお、以下では、本体部２０において流入部４０と流出部５０の間の中間部分を、中間部６０と呼ぶ。 The outflow section 50 is provided on the other end side of the main body section 20 in the axial direction as shown in FIG. 3, and allows the exhaust gas and the air flowing in the cavity section 21 to flow out (see FIG. 4). The outflow portion 50 is formed with an outflow port 52 (FIG. 3) through which exhaust gas passes. The exhaust gas and the air mixed in the cavity 21 flow out to the atmosphere through the outlet 52. In addition, below, the intermediate part between the inflow part 40 and the outflow part 50 in the main-body part 20 is called the intermediate part 60.
　本実施形態において、本体部２０は、真っ直ぐに形成されておらず、流出部５０の上壁５４が下方を向くように形成されている。すなわち、図４に示すように、流出部５０の上壁５４が、中間部６０の上壁６４よりも下方を向いている。換言すれば、流出部５０の上壁５４（流出部の壁部の一例）が排気管４の軸方向に対して成す角度が、中間部６０の城壁６４（中間部の壁部の一例）が排気管４の軸方向に対して成す角度よりも大きい。これにより、流出口５２も下方を向くことになり、空洞部２１を流れる排気ガスが、流出口５２を介して下方へ向かって流出する。 In the present embodiment, the main body portion 20 is not formed straight, but is formed so that the upper wall 54 of the outflow portion 50 faces downward. That is, as shown in FIG. 4, the upper wall 54 of the outflow portion 50 faces downward than the upper wall 64 of the intermediate portion 60. In other words, the angle formed by the upper wall 54 of the outflow portion 50 (an example of the wall portion of the outflow portion) with respect to the axial direction of the exhaust pipe 4 is the angle of the castle wall 64 of the intermediate portion 60 (an example of the wall portion of the intermediate portion). It is larger than the angle formed with respect to the axial direction of the exhaust pipe 4. As a result, the outlet 52 also faces downward, and the exhaust gas flowing through the hollow portion 21 flows out downward via the outlet 52.
　本体部２０は、前述したように上分割体２２と下分割体２４に分割されている。そして、上分割体２２における流出部５０側の上壁５４が、上分割体２２における中間部６０側の上壁６４よりも下方を向いている。すなわち、上分割体２２と下分割体２４のうちの上分割体２２の上壁の形状を曲げている。 The main body 20 is divided into the upper divided body 22 and the lower divided body 24 as described above. The upper wall 54 of the upper divided body 22 on the outflow portion 50 side faces downward than the upper wall 64 of the upper divided body 22 on the intermediate portion 60 side. That is, the shape of the upper wall of the upper divided body 22 of the upper divided body 22 and the lower divided body 24 is bent.
　また、上分割体２２は、前述したように下分割体２４よりも他端側に延在している。そして、上分割体２２の下分割体２４よりも延在している延在部分の上壁５４が、上分割体２２における中間部６０側の上壁６４よりも下方を向いている。具体的には、上分割体２２の延在部分の段階的に曲げて（好ましくは、滑らかに曲げて）、上壁５４が下方を向くように形成している。これにより、空洞部２１を流れる排気ガスが、図４に示すように、上壁５４に沿って下方に向かって流れやすくなる。 Also, the upper divided body 22 extends to the other end side than the lower divided body 24 as described above. The upper wall 54 of the extending portion extending from the lower divided body 24 of the upper divided body 22 faces downward than the upper wall 64 of the upper divided body 22 on the intermediate portion 60 side. Specifically, the extending portion of the upper divided body 22 is gradually bent (preferably, smoothly bent) so that the upper wall 54 faces downward. As a result, the exhaust gas flowing through the hollow portion 21 easily flows downward along the upper wall 54, as shown in FIG.
　また、図３に示すように、上分割体２２の延在部分の幅は、一端側から他端側へ向かうにつれて大きくなっている。すなわち、流出部５０の上壁５４の幅が、中間部６０の上壁６４の幅よりも大きくなっている。これにより、排気ガスが、流出部５０の上壁５４によって下方の広範囲に拡散されやすくなる。 Also, as shown in FIG. 3, the width of the extending portion of the upper divided body 22 increases from one end side to the other end side. That is, the width of the upper wall 54 of the outflow portion 50 is larger than the width of the upper wall 64 of the intermediate portion 60. As a result, the exhaust gas is easily diffused by the upper wall 54 of the outflow portion 50 to a wide area below.
　上記では、本体部２０の流出部５０の上壁５４を下方へ向かうように曲げていることで、本体部２０全体を斜めに配置する場合に比べて、上下方向における本体部２０の設置スペースを小さくできる（図１参照）。 In the above, since the upper wall 54 of the outflow portion 50 of the main body portion 20 is bent downward, the installation space of the main body portion 20 in the vertical direction is smaller than that in the case where the entire main body portion 20 is obliquely arranged. It can be made smaller (see Fig. 1).
　＜排気冷却部材１０での排気ガス及び空気の流れについて＞
　上述した構成の排気冷却部材１０での排気ガス及び空気の流れについて、図４を参照しながら説明する。 <Regarding the flow of exhaust gas and air in the exhaust cooling member 10>
The flow of exhaust gas and air in the exhaust cooling member 10 having the above-described configuration will be described with reference to FIG.
　排気管３を流れる排気ガスは、排気管３の後端部４に連結された排気冷却部材１０の空洞部２１に流入する。一方で、排気冷却部材１０の周囲の空気は、空洞部２１内の負圧によって引き込まれるように、流入部４０から空洞部２１に流入する。空洞部２１に流入した空気は、排気ガスと混合することで、排気ガスが冷却される。 The exhaust gas flowing through the exhaust pipe 3 flows into the cavity 21 of the exhaust cooling member 10 connected to the rear end portion 4 of the exhaust pipe 3. On the other hand, the air around the exhaust cooling member 10 flows into the hollow portion 21 from the inflow portion 40 so as to be drawn in by the negative pressure in the hollow portion 21. The air flowing into the cavity 21 is mixed with the exhaust gas to cool the exhaust gas.
　流入部４０から流入した空気で冷却された排気ガスは、下分割体２４の端部２４ａから流入する空気と混合することで、更に冷却される。その後、排気ガス及び空気は、流出部５０から流出する。この際、流出部５０の上壁５４が下方を向いているので、排気ガス及び空気は、下方へ向かって拡散するように流出する。 The exhaust gas cooled by the air flowing in from the inflow part 40 is further cooled by being mixed with the air flowing in from the end 24a of the lower split body 24. After that, the exhaust gas and the air flow out from the outflow portion 50. At this time, since the upper wall 54 of the outflow portion 50 faces downward, the exhaust gas and the air flow out so as to diffuse downward.
　＜本実施形態における効果＞
　上述した実施形態の排気冷却部材１０は、排気ガスが流れる空洞部２１が形成された本体部２０と、本体部２０の一端側に設けられ空気が流入する流入部４０と、本体部２０の他端側に設けられ排気ガス及び空気が流出する流出口５２が形成された流出部５０とを有する。そして、流出部５０の上壁５４は、本体部２０の流入部４０と流出部５０の間の中間部６０の上壁６４よりも下方を向いている。
　これにより、上壁５４に沿って流れた排気ガスは、例えば下方の路面に向かうように、流出口５２から流出される。これにより、車両の周囲にいる人や物に、高温の排気ガスが向かうことを抑制できる。特に、排気冷却部材１０がほぼ水平に取り付けられている場合でも（図１参照）、排気ガスを下方（路面）に向かって効果的に排出できる。 <Effects of this embodiment>
The exhaust cooling member 10 of the above-described embodiment includes a main body portion 20 in which a cavity portion 21 through which exhaust gas flows is formed, an inflow portion 40 provided on one end side of the main body portion 20 for inflowing air, and another main body portion 20. And an outflow portion 50 provided with an outflow port 52 which is provided on the end side and through which exhaust gas and air flow out. The upper wall 54 of the outflow portion 50 faces downward than the upper wall 64 of the intermediate portion 60 between the inflow portion 40 and the outflow portion 50 of the main body portion 20.
As a result, the exhaust gas that has flowed along the upper wall 54 is discharged from the outlet 52, for example, toward the lower road surface. As a result, it is possible to suppress the high-temperature exhaust gas from heading to people or objects around the vehicle. In particular, even when the exhaust cooling member 10 is mounted substantially horizontally (see FIG. 1), the exhaust gas can be effectively discharged downward (road surface).
　なお、上記では、本体部２０の上分割体２２の端部２２ａが下分割体２４の端部２４ａよりも外方へ延在していることとしたが、これに限定されない。例えば、下分割体２４の端部２４ａが、上分割体２２の端部２２ａと同じ長さだけ外方へ延在してもよい。 In the above description, the end portion 22a of the upper divided body 22 of the main body portion 20 is extended outward than the end portion 24a of the lower divided body 24, but the present invention is not limited to this. For example, the end portion 24a of the lower divided body 24 may extend outward by the same length as the end portion 22a of the upper divided body 22.
　また、上記では、上分割体２２の延在部分の幅が、一端側から他端側へ向かうにつれて大きくなっていることとしたが、これに限定されない。例えば、上分割体２２の延在部分の幅は、一定であることとしてもよい。 Also, in the above description, the width of the extending portion of the upper divided body 22 is increased from the one end side toward the other end side, but the width is not limited to this. For example, the width of the extending portion of the upper divided body 22 may be constant.
　以上、本発明を実施の形態を用いて説明したが、本発明の技術的範囲は上記実施の形態に記載の範囲には限定されず、その要旨の範囲内で種々の変形及び変更が可能である。例えば、装置の分散・統合の具体的な実施の形態は、以上の実施の形態に限られず、その全部又は一部について、任意の単位で機能的又は物理的に分散・統合して構成することができる。また、複数の実施の形態の任意の組み合わせによって生じる新たな実施の形態も、本発明の実施の形態に含まれる。組み合わせによって生じる新たな実施の形態の効果は、もとの実施の形態の効果を合わせ持つ。 Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist thereof. is there. For example, the specific embodiment of device distribution/integration is not limited to the above embodiment, and all or part of the device may be functionally or physically distributed/integrated in arbitrary units. You can Further, a new embodiment that occurs due to an arbitrary combination of a plurality of embodiments is also included in the embodiment of the present invention. The effect of the new embodiment produced by the combination also has the effect of the original embodiment.
　本出願は、2019年1月23日付で出願された日本国特許出願（特願2019-009572）に基づくものであり、その内容はここに参照として取り込まれる。 This application is based on the Japanese patent application (Japanese Patent Application 2019-009572) filed on January 23, 2019, the content of which is incorporated herein by reference.
　本発明は、排気ガスの流出による外部への悪影響を抑制できるという効果を有し、排気冷却部材等に有用である。 The present invention has an effect of suppressing an adverse effect on the outside due to outflow of exhaust gas, and is useful as an exhaust cooling member and the like.
　３　　排気管
　４　　後端部
　１０　　排気冷却部材
　２０　　本体部
　２１　　空洞部
　２２　　上分割体
　２４　　下分割体
　４０　　流入部
　５０　　流出部
　５２　　流出口
　５４　　上壁
　６０　　中間部
　６４　　上壁 3 Exhaust Pipe 4 Rear End 10 Exhaust Cooling Member 20 Main Body 21 Cavity 22 Upper Divided Body 24 Lower Divided Body 40 Inflow Port 50 Outflow Port 52 Outlet 54 Upper Wall 60 Middle Wall 64 Upper Wall

Claims (8)

  1. 　排気管の端部に取り付けられ、排気ガスを冷却する排気冷却部材であって、
    　前記排気ガスが流れる空洞部が形成された本体部と、
    　前記本体部の前記排気管と連結される第1端部側に設けられ、空気を前記空洞部に流入させる流入部と、
    　前記本体部の第２端部側に設けられ、前記排気ガス及び前記空気を流出させる流出口が形成された流出部と、
    　を備え、
    　前記流出部の上壁が、前記本体部の前記流入部と前記流出部の間の中間部の上壁よりも下方を向いている、排気冷却部材。     An exhaust cooling member attached to the end of the exhaust pipe to cool the exhaust gas,
    A main body formed with a cavity through which the exhaust gas flows,
    An inflow section provided on the first end side of the main body section connected to the exhaust pipe, for introducing air into the cavity section,
    An outflow part provided on the second end side of the main body part, in which an outflow port for outflowing the exhaust gas and the air is formed,
    Equipped with
    An exhaust cooling member, wherein an upper wall of the outflow portion faces downward than an upper wall of an intermediate portion between the inflow portion and the outflow portion of the main body portion.
  2. 　前記本体部は、上壁を成す上分割体と、下壁を成す下分割体とを含み、
    　前記上分割体における前記流出部の上壁が、前記上分割体における前記中間部の上壁よりも下方を向いている、
    　請求項１に記載の排気冷却部材。     The main body portion includes an upper divided body forming an upper wall and a lower divided body forming a lower wall,
    An upper wall of the outflow portion of the upper divided body is facing downward than an upper wall of the intermediate portion of the upper divided body,
    The exhaust cooling member according to claim 1.
  3. 　前記上分割体は、前記下分割体よりも前記第２端部側に延在しており、
    　前記上分割体の延在部分の上壁が、前記上分割体における前記中間部の上壁よりも下方を向いている、
    　請求項２に記載の排気冷却部材。     The upper divided body extends toward the second end side from the lower divided body,
    An upper wall of an extending portion of the upper divided body faces downward than an upper wall of the intermediate portion of the upper divided body,
    The exhaust cooling member according to claim 2.
  4. 　前記上分割体の前記延在部分の幅は、前記第1端部側から前記第２端部側へ向かうにつれて大きくなっている、
    　請求項３に記載の排気冷却部材。     The width of the extending portion of the upper divided body increases from the first end portion side toward the second end portion side,
    The exhaust cooling member according to claim 3.
  5. 　排気管の端部に取り付けられ、排気ガスを冷却する排気冷却部材であって、
    　前記排気ガスが流れる空洞部が形成された本体部と、
    　前記本体部の前記排気管と連結される第1端部側に設けられ、空気を前記空洞部に流入させる流入部と、
    　前記本体部の第２端部側に設けられ、前記排気ガス及び前記空気を流出させる流出口が形成された流出部と、
    　を備え、
    　前記流出部の壁部が前記排気管の軸方向に対して成す角度が、前記本体部の前記流入部と前記流出部の間の中間部の壁部が前記軸方向に対して成す角度よりも大きい、排気冷却部材。     An exhaust cooling member attached to the end of the exhaust pipe to cool the exhaust gas,
    A main body formed with a cavity through which the exhaust gas flows,
    An inflow section provided on the first end side of the main body section connected to the exhaust pipe, for introducing air into the cavity section,
    An outflow part provided on the second end side of the main body part and having an outflow port for outflowing the exhaust gas and the air;
    Equipped with
    The angle formed by the wall portion of the outlet portion with respect to the axial direction of the exhaust pipe is greater than the angle formed by the wall portion of the intermediate portion between the inlet portion and the outlet portion of the main body portion with respect to the axial direction. Large, exhaust cooling member.
  6. 　前記本体部は、第1分割体と、第２分割体とを含み、
    　前記第１分割体における前記流出部の前記壁部が前記軸方向に対して成す角度が、前記第１分割体における前記中間部の前記壁部が前記軸方向に対して成す角度よりも大きい、
    　請求項１に記載の排気冷却部材。     The main body portion includes a first divided body and a second divided body,
    An angle formed by the wall portion of the outflow portion in the first divided body with respect to the axial direction is larger than an angle formed by the wall portion of the intermediate portion in the first divided body with respect to the axial direction,
    The exhaust cooling member according to claim 1.
  7. 　前記第１分割体は、前記第２分割体よりも前記第２端部側に延在しており、
    　前記第１分割体の延在部分の壁部が前記軸方向に対して成す角度が、前記第１分割体における前記中間部の前記壁部が前記軸方向に対して成す前記角度よりも大きい、
    　請求項６に記載の排気冷却部材。     The first divided body extends toward the second end side from the second divided body,
    The angle formed by the wall portion of the extending portion of the first divided body with respect to the axial direction is larger than the angle formed by the wall portion of the intermediate portion of the first divided body with respect to the axial direction,
    The exhaust cooling member according to claim 6.
  8. 　前記第１分割体の前記延在部分の幅は、前記第1端部側から前記第２端部側へ向かうにつれて大きくなっている、
    　請求項７に記載の排気冷却部材。     The width of the extending portion of the first divided body increases from the first end portion side toward the second end portion side,
    The exhaust cooling member according to claim 7.
PCT/JP2020/000593 2019-01-23 2020-01-10 Exhaust cooling member WO2020153149A1 (en)

Priority Applications (1)

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CN202080010331.7A CN113330200B (en) 2019-01-23 2020-01-10 Exhaust gas cooling member

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-009572 2019-01-23
JP2019009572A JP2020118085A (en) 2019-01-23 2019-01-23 Exhaust gas cooling member

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50138411U (en) * 1974-05-01 1975-11-14
JPH04127833U (en) * 1991-05-14 1992-11-20 三菱自動車工業株式会社 exhaust system
JP2008291685A (en) * 2007-05-23 2008-12-04 Mitsubishi Fuso Truck & Bus Corp Exhaust pipe structure
JP2009068422A (en) * 2007-09-13 2009-04-02 Kubota Corp Engine exhaust structure of work machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4386215B2 (en) * 1999-02-15 2009-12-16 臼井国際産業株式会社 EGR gas cooling device
JP2005307893A (en) * 2004-04-23 2005-11-04 Tadashi Miyamoto Exhaust gas separation system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50138411U (en) * 1974-05-01 1975-11-14
JPH04127833U (en) * 1991-05-14 1992-11-20 三菱自動車工業株式会社 exhaust system
JP2008291685A (en) * 2007-05-23 2008-12-04 Mitsubishi Fuso Truck & Bus Corp Exhaust pipe structure
JP2009068422A (en) * 2007-09-13 2009-04-02 Kubota Corp Engine exhaust structure of work machine

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CN113330200B (en) 2023-05-16
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