WO2019235500A1 - Brazed structure - Google Patents

Brazed structure Download PDF

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Publication number
WO2019235500A1
WO2019235500A1 PCT/JP2019/022243 JP2019022243W WO2019235500A1 WO 2019235500 A1 WO2019235500 A1 WO 2019235500A1 JP 2019022243 W JP2019022243 W JP 2019022243W WO 2019235500 A1 WO2019235500 A1 WO 2019235500A1
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Prior art keywords
brazing
brazed
brazing material
material holding
tank body
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PCT/JP2019/022243
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French (fr)
Japanese (ja)
Inventor
孝輔 瀬口
須山　隆行
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株式会社ティラド
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Priority to JP2020523132A priority Critical patent/JPWO2019235500A1/en
Publication of WO2019235500A1 publication Critical patent/WO2019235500A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/14—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding

Definitions

  • the present invention relates to a structure having a portion where the surface of the first member and the surface of the second member are brazed.
  • the present invention prevents the brazing of the brazing surface above the vertical direction and prevents the brazing failure of the brazing surface by improving the brazing strength by securing the brazing of the brazing surface. Is an issue.
  • the invention according to claim 1 has a portion where the surface of the first member 20 and the surface of the second member 21 are brazed to each other, The part has a difference in the vertical position of the continuous brazing surface in the brazing posture, A brazing structure body having a brazing material holding portion 22 having a brazing material holding edge formed on at least one of the first member 20 and the second member 21. It is.
  • the invention according to claim 2 is the brazed structure according to claim 1, A brazing structure characterized in that a large number of brazing material holding portions 22 are formed on one brazing surface at least in the vertical direction of the portion.
  • the invention according to claim 3 is the brazed structure according to claim 1 or 2, The brazing structure is characterized in that the brazing holding portion 22 is the cutout portion 3.
  • the brazing structure is characterized in that the brazing holding portion 22 is a hole 4.
  • the invention according to claim 5 is the brazed structure according to any one of claims 1 to 4,
  • the first member 20 is a cylindrical tank body 1
  • the second member 21 is an end lid 2 that closes the openings 1b at both ends of the tank body 1 and is brazed to the tank body 1;
  • the end lid 2 is formed in a shallow dish shape with a flat plate portion 2a and a peripheral wall portion 2b which is perpendicular to the flat plate portion 2a and is raised on the outer periphery of the flat plate portion 2a.
  • the outer periphery of the peripheral wall portion 2b is a tank. Aligned with the opening 1b of the main body 1, This is a brazed structure in which a large number of brazing material holding portions 22 are formed along the peripheral wall portion 2 b of the end lid 2.
  • a brazing material holding portion 22 having a brazing material holding edge is formed on at least one of the first member 20 and the second member 21. Therefore, holding the brazing material at the edge for holding the brazing material suppresses the flow of the brazing during brazing, and a fillet is formed at the edge, thereby improving the brazing strength of the brazing portion. To do.
  • brazing holding portions 22 are formed in the upper part in the vertical direction, which tends to be short of the brazing material due to the flow of the brazing, in a wide range of the upper part in the vertical direction.
  • the flow of brazing is suppressed, and fillets are formed at the edges of the brazing holding portions, thereby further improving the brazing strength.
  • the brazing material holding portion 22 is the notched portion 3
  • the brazing material holding edge can be formed with a simple structure, and the brazing material can be prevented from flowing down.
  • the invention according to claim 5 includes a cylindrical tank body 1 that is the first member 20 and end caps 2 that close the openings 1b at both ends of the tank body 1 that is the second member 21, A large number of brazing material holding portions 22 are formed on the peripheral wall portion 2 b of the lid 2.
  • the brazing material of the peripheral wall portion 2b of the end lid 2 is held by each brazing material holding portion 22 and brazing is suppressed, so that the peripheral walls can be joined reliably and reliably.
  • a highly reliable tank can be provided.
  • FIG. 1 is an explanatory view showing a brazing material holding portion 22 (notched portion 3) formed in the brazing structure of the present invention
  • FIG. 1 (A) is a view showing a joint surface between the first member 20 and the second member 21.
  • (B) is the B section enlarged view of (A)
  • (C) is explanatory drawing which shows the effect of a brazing material holding
  • FIG. 2 is an explanatory view showing another embodiment (hole 4) of the brazing material holding portion 22 of the present invention.
  • FIG. 3 is an exploded explanatory view of the tank portion of the heat exchanger having the brazing material holding portion 22 of the present invention.
  • FIG. 4 is a perspective view of a main part of the tank structure of the present invention.
  • the present invention is a brazed structure having a portion where the surface of the first member 20 and the surface of the second member 21 (for example, plates) are brazed to each other, and the portion is continuously in the brazing posture. This is effective when there is a difference in the vertical position of the brazing surface.
  • the container and the dish-shaped side cover In the case of fitting (for example, a container of a reactor containing a catalyst and a lid fitted to the container, a groove shape member of a casing of a headerless heat exchanger and a lid fitted to the groove shape material), etc. is there.
  • a brazing material holding portion 22 having a brazing material holding edge is formed on the surface of at least one of the joining surfaces of the first member 20 and the second member 21. For example, as shown in FIG.
  • the brazing material holding part 22 can be a notch 3 or a hole 4.
  • the shape of the notch 3 can be a U-shape as shown in FIG.
  • Other shapes of the notch 3 may be a rectangular shape, a wedge shape, a slit, or the like.
  • the shape of the hole 4 can be a flat hole (an ellipse, a rectangular hole, etc.) as shown in FIG. 2 as an example.
  • holes 4 may be round holes, square holes, triangular holes, or the like.
  • the present invention is applied to the surface of the tank body 1 of the heat exchanger as the first member 20 and the surface of the end lid 2 as the second member 21 will be described with reference to FIGS.
  • the present invention can be applied to heat exchangers such as EGR coolers and oil coolers, heat exchangers of large machines such as construction machines, and heat exchangers such as air conditioners.
  • a number of flat tubes 6 and corrugated fins 7 are alternately arranged to form a heat exchanger core 8, and a pair of cores are formed at both ends in the width direction of the heat exchanger core 8.
  • a plate 9 (left core plate 9 omitted in FIG. 3) is disposed, and tanks are disposed at both left and right ends (right omitted) of the heat exchanger core 8 in the figure.
  • a pair of tank is arrange
  • the tank includes a tank body 1 and a pair of end covers.
  • the tank body 1 is formed in a cylindrical shape by a groove-shaped portion 1c formed in a groove shape and a header plate 1d facing the groove-shaped portion 1c.
  • a pair of end covers 2 are arranged at both ends of the tank body 1 in the longitudinal direction (the left end cover 2 is omitted in FIG. 4).
  • the header plate 1d a large number of tube insertion holes 1e are arranged at regular intervals, and both ends of the flat tube 6 of the heat exchanger core 8 are inserted therethrough.
  • the header plate 1d has narrow groove-shaped tightening portions 12 formed at both edges in the width direction, and is fastened and fixed to the edges of both side walls of the groove-shaped portion 1c.
  • a core plate 9 formed in a shallow groove shape is disposed at both ends of the heat exchanger core 8 in the width direction, and bent portions 13 are bent at both left and right ends thereof.
  • the end lid 2 fitted to both ends of the tank body 1 has a flat plate portion 2a and a peripheral wall portion 2b press-molded at right angles to the plane, and the flat plate portion 2a has a rigid recess 15. Is formed.
  • the peripheral wall portion 2 b is formed in a flat rectangular shape, and the outer periphery thereof is aligned with the opening at both ends of the tank body 1.
  • a large number of notches 3 are formed at regular intervals as brazing material holding portions 22 at the respective edges of the four sides of the peripheral wall portion 2b.
  • the claw part 5, the claw part 5a, and the claw part 5b are formed in the edge part of the surrounding wall part 2b.
  • the claw portion 5 is aligned with the edge of the groove-shaped portion 1 c of the tank body 1, and the claw portion 5 a is aligned with the edge of the bent portion 13 of the core plate 9. Further, the claw portions 5b are bent in a U shape so as to be aligned with the edge of the header plate 1d of the tank body 1. Then, each of the claw portions is bent, and the end lid 2 and the groove-shaped portion 1c, the header plate 1d, and the core plate 9 of the tank body 1 are integrally fastened. Next, the parts assembled as shown in FIG. 4 are entirely inserted into a high-temperature furnace. At this time, a brazing material is coated or coated on at least one side of each component, and is placed in the furnace in the posture of FIG.
  • each component is arranged so that two opposite sides of the four sides of the end lid 2 are parallel to the vertical direction (gravity direction).
  • the brazing material melted from the end lid 2 is held at the edge of the notch 3 as shown in FIG.
  • the brazing material is held between the peripheral wall portion 2b of the end lid 2 and the header plate 1d, and a braze fillet 11 is formed between the two as shown in FIG.
  • a large number of notch portions 3 are also formed at regular intervals in the portions located at the upper and lower ends, and the space between the peripheral wall portion 2b and the groove-shaped portion 1c of the tank body 1 is brazed.
  • the brazing material holding part 22 can also be formed by the holes 4 as shown in FIG.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Abstract

The present invention relates to a structure having a part in which a surface of a first member and a surface of a second member are brazed to one another, and the objective of the present invention is to prevent brazing filler on an upper brazing surface, in a vertical direction, from flowing down, in order to maintain the brazing filler on said brazing surface, thereby preventing brazing failure of the brazing surface and improving the brazing strength. This brazed structure includes a part in which a surface of a first member 20 and a surface of a second member 21 are joined to one another by brazing, wherein a difference exists in the vertical positions of brazing surfaces that are continuous with one another in the attitude in which the part is brazed, the brazed structure being characterized in that a brazing material holding portion 22 including an edge for holding brazing material is formed in at least one surface of the surface of the first member 20 and the surface of the second member 21.

Description

ろう付構造体Brazed structure
　本発明は、第１部材の面と第２部材の面とがろう付された部位を有する構造体に関する。 The present invention relates to a structure having a portion where the surface of the first member and the surface of the second member are brazed.
　第１部材の面と第２部材の面とがろう付された部位を有する構造体において、連続するろう付面のろう付の際の鉛直方向（重力方向）の上下の位置に差がある場合、鉛直方向の上方のろうが流下し、当該ろう付面のろうが不足することによって、その部位にろう付不良が生じ、ろう付強度が低下するおそれがある。 In a structure having a part where the surface of the first member and the surface of the second member are brazed, there is a difference in vertical position (gravity direction) when brazing the continuous brazing surfaces If the solder moves upward in the vertical direction and the brazing surface of the brazing surface is insufficient, there is a risk that brazing failure will occur at that part and the brazing strength will decrease.
　本発明は、鉛直方向の上方のろう付面のろうの流下を防止し、当該ろう付面のろうを確保することにより、ろう付面のろう付不良を防止し、ろう付強度を向上させることを課題とする。 The present invention prevents the brazing of the brazing surface above the vertical direction and prevents the brazing failure of the brazing surface by improving the brazing strength by securing the brazing of the brazing surface. Is an issue.
　請求項１に記載の発明は、第１部材２０の面と第２部材２１の面とが互いにろう付接合された部位を有し、
　前記部位は、そのろう付姿勢における連続するろう付面の鉛直方向の上下の位置に差を有し、
　前記第１部材２０の面または前記第２部材２１の面の少なくとも一方の面には、ろう材保持用の縁を有するろう材保持部２２が形成されていることを特徴とするろう付構造体である。
　請求項２に記載の発明は、請求項１に記載のろう付構造体において、
　前記部位の少なくとも鉛直方向の上方で、一方のろう付面に、多数のろう材保持部２２が形成されていることを特徴とするろう付構造体である。
　請求項３に記載の発明は、請求項１または請求項２のいずれかに記載のろう付構造体において、
　前記ろう付保持部２２が、欠切部３であることを特徴とするろう付構造体である。
　請求項４に記載の発明は、請求項１または請求項２のいずれかに記載のろう付構造体において、
　前記ろう付保持部２２が、孔４であることを特徴とするろう付構造体である。
　請求項５に記載の発明は、請求項１乃至請求項４のいずれかに記載のろう付構造体において、
　前記第１部材２０は、筒状のタンク本体１であり、
　前記第２部材２１は、前記タンク本体１の両端の開口１ｂを閉塞し、そのタンク本体１との間がろう付接合される端蓋２であり、
　前記端蓋２は、平板部２ａと、その平板部２ａに直交して、平板部２ａの外周に立上げられた周壁部２ｂとで浅い皿状に形成され、その周壁部２ｂの外周がタンク本体１の前記開口１ｂに整合し、
　前記端蓋２の周壁部２ｂに沿って、多数のろう材保持部２２が形成されたろう付構造体である。 The invention according to claim 1 has a portion where the surface of the first member 20 and the surface of the second member 21 are brazed to each other,
The part has a difference in the vertical position of the continuous brazing surface in the brazing posture,
A brazing structure body having a brazing material holding portion 22 having a brazing material holding edge formed on at least one of the first member 20 and the second member 21. It is.
The invention according to claim 2 is the brazed structure according to claim 1,
A brazing structure characterized in that a large number of brazing material holding portions 22 are formed on one brazing surface at least in the vertical direction of the portion.
The invention according to claim 3 is the brazed structure according to claim 1 or 2,
The brazing structure is characterized in that the brazing holding portion 22 is the cutout portion 3.
According to a fourth aspect of the present invention, in the brazed structure according to the first or second aspect,
The brazing structure is characterized in that the brazing holding portion 22 is a hole 4.
The invention according to claim 5 is the brazed structure according to any one of claims 1 to 4,
The first member 20 is a cylindrical tank body 1,
The second member 21 is an end lid 2 that closes the openings 1b at both ends of the tank body 1 and is brazed to the tank body 1;
The end lid 2 is formed in a shallow dish shape with a flat plate portion 2a and a peripheral wall portion 2b which is perpendicular to the flat plate portion 2a and is raised on the outer periphery of the flat plate portion 2a. The outer periphery of the peripheral wall portion 2b is a tank. Aligned with the opening 1b of the main body 1,
This is a brazed structure in which a large number of brazing material holding portions 22 are formed along the peripheral wall portion 2 b of the end lid 2.
　請求項１に記載の発明は、第１部材２０の面または第２部材２１の面がろう付接合された部位のろう付姿勢における連続するろう付面の鉛直方向の上下の位置に差を有し、第１部材２０の面または第２部材２１の面の少なくとも一方の面には、ろう材保持用の縁を有するろう材保持部２２が形成されているものである。
　それ故、ろう材保持用の縁にろう材が保持されることにより、ろう付時のろうの流下が抑制され、その縁にはフィレットが形成されるので、ろう付部位のろう付強度が向上する。
　請求項２に記載の発明は、ろうの流下によってろう材不足となり易い鉛直方向の上方の部分に、多数のろう付保持部２２が形成されているので、鉛直方向の上方の部分の広い範囲において、ろうの流下が抑制され、それぞれのろう付保持部の縁にフィレットが形成され、ろう付強度がさらに向上する。
　請求項３に記載の発明は、ろう材保持部２２が欠切部３であるので、簡単な構造でろう材保持用の縁を形成でき、ろう材の流下を抑制することができる。
　請求項４に記載の発明は、ろう材保持部２２が孔４であるので、簡単な構造でろう材保持用の縁を形成でき、ろう材の流下を抑制することができる。
　請求項５に記載の発明は、第１部材２０である筒状のタンク本体１と、第２部材２１であるタンク本体１の両端の開口１ｂを閉塞する端蓋２と、を有し、端蓋２の周壁部２ｂに、多数のろう材保持部２２が形成されたものである。
　ろう材保持部により、ろう付の際、端蓋２の周壁部２ｂのろう材が各ろう材保持部２２に保持され流下が抑止されるので、周壁の接合を確実に行うことができ、信頼性の高いタンクを提供することができる。 According to the first aspect of the present invention, there is a difference in the vertical position of the continuous brazing surface in the brazing position of the portion where the surface of the first member 20 or the surface of the second member 21 is brazed and joined. A brazing material holding portion 22 having a brazing material holding edge is formed on at least one of the first member 20 and the second member 21.
Therefore, holding the brazing material at the edge for holding the brazing material suppresses the flow of the brazing during brazing, and a fillet is formed at the edge, thereby improving the brazing strength of the brazing portion. To do.
In the invention according to claim 2, since a large number of brazing holding portions 22 are formed in the upper part in the vertical direction, which tends to be short of the brazing material due to the flow of the brazing, in a wide range of the upper part in the vertical direction. The flow of brazing is suppressed, and fillets are formed at the edges of the brazing holding portions, thereby further improving the brazing strength.
According to the third aspect of the present invention, since the brazing material holding portion 22 is the notched portion 3, the brazing material holding edge can be formed with a simple structure, and the brazing material can be prevented from flowing down.
In the invention according to claim 4, since the brazing material holding portion 22 is the hole 4, an edge for brazing material holding can be formed with a simple structure, and the flow of the brazing material can be suppressed.
The invention according to claim 5 includes a cylindrical tank body 1 that is the first member 20 and end caps 2 that close the openings 1b at both ends of the tank body 1 that is the second member 21, A large number of brazing material holding portions 22 are formed on the peripheral wall portion 2 b of the lid 2.
When brazing, the brazing material of the peripheral wall portion 2b of the end lid 2 is held by each brazing material holding portion 22 and brazing is suppressed, so that the peripheral walls can be joined reliably and reliably. A highly reliable tank can be provided.
　図１は本発明のろう付構造体に形成されたろう材保持部２２（欠切部３）を示す説明図であり、（Ａ）は第１部材２０と第２部材２１の接合面を示す図、（Ｂ）は（Ａ）のＢ部拡大図、（Ｃ）はろう材保持部の効果を示す説明図。
　図２は本発明の他のろう材保持部２２の実施形態（孔４）を示す説明図。
　図３は本発明のろう材保持部２２を有する熱交換器のタンク部分の分解説明図。
　図４は本発明のタンク構造の要部斜視図。 FIG. 1 is an explanatory view showing a brazing material holding portion 22 (notched portion 3) formed in the brazing structure of the present invention, and FIG. 1 (A) is a view showing a joint surface between the first member 20 and the second member 21. (B) is the B section enlarged view of (A), (C) is explanatory drawing which shows the effect of a brazing material holding | maintenance part.
FIG. 2 is an explanatory view showing another embodiment (hole 4) of the brazing material holding portion 22 of the present invention.
FIG. 3 is an exploded explanatory view of the tank portion of the heat exchanger having the brazing material holding portion 22 of the present invention.
FIG. 4 is a perspective view of a main part of the tank structure of the present invention.
　図１及び図２に基づいて本発明の実施の形態につき説明する。
　本発明は、第１部材２０の面と第２部材２１の面（例えば、プレートどうし）とが互いにろう付接合された部位を有するろう付構造体であって、その部位のろう付姿勢における連続するろう付面の鉛直方向の上下の位置に差がある場合に有効である。
　例を挙げると、面が立っている場合や、上面、側面および下面が連続している場合（一例として、後述のタンク本体と端蓋との接合等）、容器と皿状の側蓋との嵌合の場合（一例として、触媒入り反応器の容器と容器に嵌合する蓋、ヘッダーレス型熱交換器のケーシングの溝形材と溝形材に嵌合する蓋）等に利用できる発明である。
　第１部材２０と第２部材２１の接合面の少なくても一方の部材の面には、ろう材保持用の縁を有するろう材保持部２２が形成されている。そして、例えば、図１（Ａ）に示すように、そのろう付部位の少なくても鉛直方向の上方で、一方のろう付面には多数のろう材保持部２２が形成されているものである。このろう材保持部２２の縁によって、図１（Ｃ）に示す如く、ろう付時に、鉛直方向の下側（重力方向）に流下するろう材を効果的に捕捉できる。
　ろう材保持部２２は、欠切部３や孔４とすることができる。この欠切部３の形状は、一例として、図１に示すようなＵ字型とすることができる。欠切部３の他の形状として、矩形型、楔型、スリット等とすることもできる。孔４の形状は、一例として、図２に示すような偏平孔（楕円、長方形孔等）とすることができる。孔４の他の形状として、丸孔、四角孔、三角孔、等とすることもできる。図２のような偏平孔とした場合、ろう付姿勢において長辺が水平方向となるように形成すると、ろうの流下を広範囲に渡って抑制することができる。
　次に、図３及び図４に基づいて、第１部材２０として熱交換器のタンク本体１の面と、第２部材２１として端蓋２の面に本発明を適用した場合について説明する。ＥＧＲクーラ、オイルクーラ等の熱交換器、建設機械等の大型機械の熱交換器、エアコン等の熱交換器に適用できるものである。
　この例の熱交換器は、多数の偏平なチューブ６とコルゲート型のフィン７とを交互に配置して熱交換器コア８を形成し、その熱交換器コア８の幅方向両端に一対のコアプレート９（図３において左側のコアプレート９を省略）を配置すると共に、その熱交換器コア８の図において、左右両端（右側省略）にタンクを配置したものである。なお、一対のタンクは、稼働時に上下方向に配置される。
　そのタンクは、タンク本体１と一対の端蓋とからなる。そのタンク本体１は溝形に形成された溝形部１ｃと、その溝形部１ｃに対向するヘッダプレート１ｄとにより筒形に形成されている。そして、そのタンク本体１の長手方向両端に一対の端蓋２が配置されている（図４では左側の端蓋２を省略）。ヘッダプレート１ｄは、多数のチューブ挿通孔１ｅが定間隔に配置され、そこに熱交換器コア８の偏平なチューブ６の両端が挿通される。
　なお、ヘッダプレート１ｄは、その幅方向両縁に細溝状の巻締部１２が形成され、それが溝形部１ｃの両側壁の縁部に締結固定される。さらに、熱交換器コア８の幅方向両端には浅い溝形に形成されたコアプレート９が配置され、その左右両端に折曲部１３が折曲げられている。
　次に、タンク本体１の両端に嵌着される端蓋２は、平板部２ａと、その平面に直角にプレス成形された周壁部２ｂとを有し、平板部２ａには剛性用凹部１５が形成されている。また、周壁部２ｂは平面方形に形成され、その外周がタンク本体１の両端開口に整合する。その周壁部２ｂの四辺の各縁部には、ろう材保持部２２として、定間隔に多数の欠切部３が形成されている。
　さらに、周壁部２ｂの縁部には、爪部５、爪部５ａ、爪部５ｂが形成されている。爪部５は、タンク本体１の溝形部１ｃの縁に整合し、爪部５ａはコアプレート９の折曲部１３の縁に整合する。さらに、爪部５ｂはタンク本体１のヘッダプレート１ｄの縁に整合するように、それぞれコ字状に曲折される。そして、それら各爪部を折り曲げ、端蓋２とタンク本体１の溝形部１ｃ及びヘッダプレート１ｄ並びにコアプレート９との間が一体的に締結される。
　次に、図４に示すように組み立てられた各部品は、全体が高温の炉内に挿入される。このとき、各部品の少なくとも一方側には、ろう材が被覆または塗布され、図３の姿勢の状態で炉内に配置される。即ち、端蓋２の四辺のうち対向する二辺が鉛直方向（重力方向）と平行となるように各部品が配置される。
　そして、炉内で、端蓋２から溶融したろう材は、図１（Ｃ）の如く、欠切部３の縁部に保持される。このとき、端蓋２の周壁部２ｂと、ヘッダプレート１ｄとの間にろう材が保持され、同図に示す如く、ろうフィレット１１が両者間に形成される。
　なお、周壁部２ｂの図において、上下両端に位置する部分にも、多数の欠切部３が定間隔に形成され、その周壁部２ｂとタンク本体１の溝形部１ｃとの間が、ろう材により接合される。
　ろう材保持部２２は、図２のように孔４により形成することもできる。 An embodiment of the present invention will be described with reference to FIGS.
The present invention is a brazed structure having a portion where the surface of the first member 20 and the surface of the second member 21 (for example, plates) are brazed to each other, and the portion is continuously in the brazing posture. This is effective when there is a difference in the vertical position of the brazing surface.
For example, when the surface is standing, or when the upper surface, side surface, and lower surface are continuous (for example, joining of the tank body and the end lid described later), the container and the dish-shaped side cover In the case of fitting (for example, a container of a reactor containing a catalyst and a lid fitted to the container, a groove shape member of a casing of a headerless heat exchanger and a lid fitted to the groove shape material), etc. is there.
A brazing material holding portion 22 having a brazing material holding edge is formed on the surface of at least one of the joining surfaces of the first member 20 and the second member 21. For example, as shown in FIG. 1 (A), a large number of brazing material holding portions 22 are formed on one brazing surface at least above the brazing portion in the vertical direction. . As shown in FIG. 1C, the edge of the brazing material holding portion 22 can effectively capture the brazing material flowing down in the vertical direction (the direction of gravity) during brazing.
The brazing material holding part 22 can be a notch 3 or a hole 4. As an example, the shape of the notch 3 can be a U-shape as shown in FIG. Other shapes of the notch 3 may be a rectangular shape, a wedge shape, a slit, or the like. The shape of the hole 4 can be a flat hole (an ellipse, a rectangular hole, etc.) as shown in FIG. 2 as an example. Other shapes of the holes 4 may be round holes, square holes, triangular holes, or the like. In the case of the flat hole as shown in FIG. 2, if the long side is formed in the horizontal direction in the brazing posture, the flow of the brazing can be suppressed over a wide range.
Next, the case where the present invention is applied to the surface of the tank body 1 of the heat exchanger as the first member 20 and the surface of the end lid 2 as the second member 21 will be described with reference to FIGS. The present invention can be applied to heat exchangers such as EGR coolers and oil coolers, heat exchangers of large machines such as construction machines, and heat exchangers such as air conditioners.
In the heat exchanger of this example, a number of flat tubes 6 and corrugated fins 7 are alternately arranged to form a heat exchanger core 8, and a pair of cores are formed at both ends in the width direction of the heat exchanger core 8. A plate 9 (left core plate 9 omitted in FIG. 3) is disposed, and tanks are disposed at both left and right ends (right omitted) of the heat exchanger core 8 in the figure. In addition, a pair of tank is arrange | positioned at the up-down direction at the time of operation.
The tank includes a tank body 1 and a pair of end covers. The tank body 1 is formed in a cylindrical shape by a groove-shaped portion 1c formed in a groove shape and a header plate 1d facing the groove-shaped portion 1c. A pair of end covers 2 are arranged at both ends of the tank body 1 in the longitudinal direction (the left end cover 2 is omitted in FIG. 4). In the header plate 1d, a large number of tube insertion holes 1e are arranged at regular intervals, and both ends of the flat tube 6 of the heat exchanger core 8 are inserted therethrough.
The header plate 1d has narrow groove-shaped tightening portions 12 formed at both edges in the width direction, and is fastened and fixed to the edges of both side walls of the groove-shaped portion 1c. Furthermore, a core plate 9 formed in a shallow groove shape is disposed at both ends of the heat exchanger core 8 in the width direction, and bent portions 13 are bent at both left and right ends thereof.
Next, the end lid 2 fitted to both ends of the tank body 1 has a flat plate portion 2a and a peripheral wall portion 2b press-molded at right angles to the plane, and the flat plate portion 2a has a rigid recess 15. Is formed. Further, the peripheral wall portion 2 b is formed in a flat rectangular shape, and the outer periphery thereof is aligned with the opening at both ends of the tank body 1. A large number of notches 3 are formed at regular intervals as brazing material holding portions 22 at the respective edges of the four sides of the peripheral wall portion 2b.
Furthermore, the claw part 5, the claw part 5a, and the claw part 5b are formed in the edge part of the surrounding wall part 2b. The claw portion 5 is aligned with the edge of the groove-shaped portion 1 c of the tank body 1, and the claw portion 5 a is aligned with the edge of the bent portion 13 of the core plate 9. Further, the claw portions 5b are bent in a U shape so as to be aligned with the edge of the header plate 1d of the tank body 1. Then, each of the claw portions is bent, and the end lid 2 and the groove-shaped portion 1c, the header plate 1d, and the core plate 9 of the tank body 1 are integrally fastened.
Next, the parts assembled as shown in FIG. 4 are entirely inserted into a high-temperature furnace. At this time, a brazing material is coated or coated on at least one side of each component, and is placed in the furnace in the posture of FIG. That is, each component is arranged so that two opposite sides of the four sides of the end lid 2 are parallel to the vertical direction (gravity direction).
In the furnace, the brazing material melted from the end lid 2 is held at the edge of the notch 3 as shown in FIG. At this time, the brazing material is held between the peripheral wall portion 2b of the end lid 2 and the header plate 1d, and a braze fillet 11 is formed between the two as shown in FIG.
In the drawing of the peripheral wall portion 2b, a large number of notch portions 3 are also formed at regular intervals in the portions located at the upper and lower ends, and the space between the peripheral wall portion 2b and the groove-shaped portion 1c of the tank body 1 is brazed. Joined by materials.
The brazing material holding part 22 can also be formed by the holes 4 as shown in FIG.
　１　タンク本体
　１ｂ　開口
　１ｃ　溝形部
　１ｄ　ヘッダプレート
　１ｅ　チューブ挿通孔
　２　端蓋
　２ａ　平板部
　２ｂ　周壁部
　３　欠切部
　４　孔
　５　爪部
　５ａ　爪部
　５ｂ　爪部
　６　チューブ
　７　フィン
　８　熱交換器コア
　９　コアプレート
　１０　パイプ
　１１　ろうフィレット
　１２　巻締部
　１３　折曲部
　１５　剛性用凹部
　２０　第１部材
　２１　第２部材
　２２　ろう材保持部 DESCRIPTION OF SYMBOLS 1 Tank main body 1b Opening 1c Groove-shaped part 1d Header plate 1e Tube insertion hole 2 End cover 2a Flat plate part 2b Peripheral wall part 3 Notch part 4 Hole 5 Claw part 5a Claw part 5b Claw part 6 Tube 7 Fin 8 Heat exchanger core 9 Core plate 10 Pipe 11 Wax fillet 12 Winding portion 13 Bending portion 15 Rigidity recess 20 First member 21 Second member 22 Brazing material holding portion

Claims (5)

  1. 　第１部材（２０）の面と第２部材（２１）の面とが互いにろう付接合された部位を有し、
    　前記部位は、そのろう付姿勢における連続するろう付面の鉛直方向の上下の位置に差を有し、
    　前記第１部材（２０）の面または前記第２部材（２１）の面の少なくとも一方の面には、ろう材保持用の縁を有するろう材保持部（２２）が形成されていることを特徴とするろう付構造体。     Having a portion where the surface of the first member (20) and the surface of the second member (21) are brazed to each other;
    The part has a difference in the vertical position of the continuous brazing surface in the brazing posture,
    A brazing material holding portion (22) having a brazing material holding edge is formed on at least one surface of the first member (20) or the second member (21). And brazed structure.
  2. 　請求項１に記載のろう付構造体において、
    　前記部位の少なくとも鉛直方向の上方で、一方のろう付面に、多数のろう材保持部（２２）が形成されていることを特徴とするろう付構造体。     The brazed structure according to claim 1,
    A brazing structure in which a large number of brazing material holding portions (22) are formed on one brazing surface at least vertically above the portion.
  3. 　請求項１または請求項２のいずれかに記載のろう付構造体において、
    　前記ろう付保持部（２２）が、欠切部（３）であることを特徴とするろう付構造体。     In the brazing structure according to claim 1 or 2,
    The brazing structure, wherein the brazing holding part (22) is a notch (3).
  4. 　請求項１または請求項２のいずれかに記載のろう付構造体において、
    　前記ろう付保持部（２２）が、孔（４）であることを特徴とするろう付構造体。     In the brazing structure according to claim 1 or 2,
    The brazing structure, wherein the brazing holding part (22) is a hole (4).
  5. 　請求項１乃至請求項４のいずれかに記載のろう付構造体において、
    　前記第１部材（２０）は、筒状のタンク本体（１）であり、
    　前記第２部材（２１）は、前記タンク本体（１）の両端の開口（１ｂ）を閉塞し、そのタンク本体（１）との間がろう付接合される端蓋（２）であり、
    　前記端蓋（２）は、平板部（２ａ）と、その平板部（２ａ）に直交して、平板部（２ａ）の外周に立上げられた周壁部（２ｂ）とで浅い皿状に形成され、その周壁部（２ｂ）の外周がタンク本体（１）の前記開口（１ｂ）に整合し、
    　前記端蓋（２）の周壁部（２ｂ）に沿って、多数のろう材保持部（２２）が形成されたろう付構造体。     In the brazing structure according to any one of claims 1 to 4,
    The first member (20) is a cylindrical tank body (1),
    The second member (21) is an end lid (2) that closes the openings (1b) at both ends of the tank body (1) and is brazed to the tank body (1).
    The end lid (2) is formed in a shallow dish shape with a flat plate portion (2a) and a peripheral wall portion (2b) raised perpendicular to the flat plate portion (2a) and on the outer periphery of the flat plate portion (2a). The outer periphery of the peripheral wall portion (2b) is aligned with the opening (1b) of the tank body (1),
    A brazing structure in which a large number of brazing material holding portions (22) are formed along the peripheral wall portion (2b) of the end lid (2).
PCT/JP2019/022243 2018-06-08 2019-05-28 Brazed structure WO2019235500A1 (en)

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JPH02299795A (en) * 1989-05-11 1990-12-12 Showa Alum Corp Brazing method for metallic material
JPH03107821U (en) * 1990-02-20 1991-11-06
JPH07154048A (en) * 1993-12-01 1995-06-16 Toyota Autom Loom Works Ltd Outer lead of electronic device
JP2007163096A (en) * 2005-12-16 2007-06-28 Rinnai Corp Method for manufacturing latent heat recovery type heat exchanger
JP2013094824A (en) * 2011-11-01 2013-05-20 Aisin Aw Co Ltd Semiconductor device
EP3053690A1 (en) * 2015-02-09 2016-08-10 United Technologies Corporation Assemblies with brazed joints and methods of fabricating assemblies with brazed joints

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54147753U (en) * 1978-04-06 1979-10-15
JPH0739032B2 (en) * 1991-04-04 1995-05-01 昭和アルミニウム株式会社 Brazing method for metal materials
JPH0740863Y2 (en) * 1992-02-26 1995-09-20 東京ラヂエーター製造株式会社 Header pipe for heat exchanger
JPH08210794A (en) * 1995-02-02 1996-08-20 Nippondenso Co Ltd Heat exchanger and its manufacture

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02299795A (en) * 1989-05-11 1990-12-12 Showa Alum Corp Brazing method for metallic material
JPH03107821U (en) * 1990-02-20 1991-11-06
JPH07154048A (en) * 1993-12-01 1995-06-16 Toyota Autom Loom Works Ltd Outer lead of electronic device
JP2007163096A (en) * 2005-12-16 2007-06-28 Rinnai Corp Method for manufacturing latent heat recovery type heat exchanger
JP2013094824A (en) * 2011-11-01 2013-05-20 Aisin Aw Co Ltd Semiconductor device
EP3053690A1 (en) * 2015-02-09 2016-08-10 United Technologies Corporation Assemblies with brazed joints and methods of fabricating assemblies with brazed joints

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