JP6907062B2 - Heat exchanger flange or bracket structure - Google Patents

Heat exchanger flange or bracket structure Download PDF

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JP6907062B2
JP6907062B2 JP2017146950A JP2017146950A JP6907062B2 JP 6907062 B2 JP6907062 B2 JP 6907062B2 JP 2017146950 A JP2017146950 A JP 2017146950A JP 2017146950 A JP2017146950 A JP 2017146950A JP 6907062 B2 JP6907062 B2 JP 6907062B2
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flange
bracket
groove
heat exchanger
mounting surface
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JP2019027666A5 (en
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将仁 関谷
将仁 関谷
弘仁 杉本
弘仁 杉本
徹明 所
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T.RAD CO., L T D.
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    • 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
    • F28F9/007—Auxiliary supports for elements

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

Description

この発明は、炉内で部分的にろう付される熱交換器のフランジ又はブラケットの構造に関する。 The present invention relates to the structure of a flange or bracket of a heat exchanger that is partially brazed in a furnace.

下記特許文献１に記載の熱交換器ヘッダーのブラケット連結構造は、炉中ろう付において、溶融状態のろう材がボルト孔に流れ込むことを防止するため溝部が設けられている。この溝はろう付部に沿って直線的に形成され、ろう付時に流下したろう材をそこに保持するものである。 The bracket connecting structure of the heat exchanger header described in Patent Document 1 below is provided with a groove in order to prevent the brazed material in a molten state from flowing into the bolt holes in brazing in a furnace. This groove is formed linearly along the brazed portion, and holds the brazing material that has flowed down during brazing there.

特開２０００−１６１８９２号公報Japanese Unexamined Patent Publication No. 2000-161892

本発明は、炉内で熱交換器本体の外周に部分的にろう付され、本体から突出して取付けられたフランジまたはブラケットにおいて、その表面に別部材がボルトを介して接続されたとき、フランジまたはブラケットのろう付部に生じる応力集中を防止低減し、ろう付部の付根に生じる脆弱部の範囲及び大きさを小さくすることを目的とする。それと共に、ろう付中に生じる溶融ろう材がブラケットやフランジのボルト孔の周りに浸入しないようにするものである。 The present invention is a flange or bracket that is partially brazed to the outer periphery of the heat exchanger body in a furnace and is mounted so as to project from the body, when another member is connected to the surface of the flange or bracket via a bolt. The purpose is to prevent and reduce the stress concentration that occurs in the brazed part of the bracket, and to reduce the range and size of the fragile part that occurs at the base of the brazed part. At the same time, the molten brazing material generated during brazing is prevented from entering around the bolt holes of the bracket and the flange.

請求項１に記載の本発明は、熱交換器本体（１）の外周にろう付により取り付けられ、そのろう付面（８）から離れた自由端側に取付用のボルト孔（４）が形成された熱交換器のフランジまたはブラケットであって、
前記ろう付面（８）と前記ボルト孔（４）との中間に、両者間を二分するように溝（５）が形成されると共に、
前記溝（５）はブラケットまたはフランジの、取付面（６）またはその反対側の面に形成され、その溝（５）の両端がフランジまたはブラケットの縁まで形成され、
前記溝（５）の存在により、ろう付の際、フランジ（２）またはブラケット（３）のボルト孔（４）の孔縁部の近傍にろう材が侵入しないように形成すると共に、前記取付面（６）に他の機器本体またはたのフランジが締結される際、ろう付部に応力が集中しないように、前記取付面（６）のボルト孔（４）側が前記溝（５）を境に変形することが可能な熱交換器のフランジまたはブラケットの構造である。 The present invention according to claim 1 is attached to the outer periphery of the heat exchanger body (1) by brazing, and a bolt hole (4) for attachment is formed on the free end side away from the brazed surface (8). Brazed heat exchanger flanges or brackets
Wherein the intermediate brazing surface (8) and said bolt hole (4), the groove so as to divide the therebetween (5) is formed Rutotomoni,
The groove (5) is formed on the mounting surface (6) or the opposite surface of the bracket or flange, and both ends of the groove (5) are formed up to the edge of the flange or bracket.
Due to the presence of the groove (5), the brazing material is formed so as not to enter the vicinity of the hole edge of the bolt hole (4) of the flange (2) or the bracket (3) during brazing, and the mounting surface is formed. When the flange of another device body or the other device is fastened to (6), the bolt hole (4) side of the mounting surface (6) is separated from the groove (5) so that the stress does not concentrate on the brazed portion. The structure of the flange or bracket of the heat exchanger that can be deformed.

請求項２に記載の本発明は、前記溝５が弧状に形成された請求項１に記載された熱交換器のフランジまたはブラケットの構造である。 The present invention according to claim 2 is the structure of the flange or bracket of the heat exchanger according to claim 1, wherein the groove 5 is formed in an arc shape.

本発明においては、請求項１及び請求項２に記載のごとく、溝５が構成されている。その溝５の存在により、ろう材がボルト孔４の孔縁部側に進入せず、孔縁部の回りを平坦に保持できる。そのため、ボルト孔４を介して、フランジ２またはブラケット３に別部材を隙間なく取り付けることができる。
さらに、フランジ２またはブラケット３の取付面６に別部材が取付られたとき、その別部材とフランジ２またはブラケット３との間に生じる応力が低減される。これは、表面に刻設された溝５から先が変形し易くなり、フランジ２またはブラケット３のろう付部に生じる応力集中を低減し、ろう付の付根に生じる脆弱部位９の範囲および大きさを小さくできるものである。 In the present invention , the groove 5 is configured as described in claims 1 and 2 . Due to the presence of the groove 5, the brazing material does not enter the hole edge portion of the bolt hole 4, and the circumference of the hole edge portion can be kept flat. Therefore, another member can be attached to the flange 2 or the bracket 3 without a gap through the bolt hole 4.
Further, when another member is attached to the mounting surface 6 of the flange 2 or the bracket 3, the stress generated between the other member and the flange 2 or the bracket 3 is reduced. This makes it easier for the tip of the groove 5 carved on the surface to deform, reduces the stress concentration that occurs in the brazed part of the flange 2 or bracket 3, and the range and size of the fragile part 9 that occurs at the base of the brazing. Can be made smaller.

本発明の熱交換器本体１の外周に取付けられたフランジ２およびブラケット３の正面側の斜視図。The front side perspective view of the flange 2 and the bracket 3 attached to the outer periphery of the heat exchanger body 1 of this invention. フランジ２の平面図（Ａ）及び、（Ａ）のＢ−Ｂ矢視断面図（Ｂ）。The plan view (A) of the flange 2 and the cross-sectional view taken along the line BB of (A) (B). 同熱交換器の背面側の斜視図。A perspective view of the rear side of the heat exchanger. ブラケット３の側面図であって、そのろう付側に他の部材が締結されたときの変形状態を示す説明図。FIG. 5 is a side view of the bracket 3 and is an explanatory view showing a deformed state when another member is fastened to the brazed side thereof. 同ろう付部の付根に生じる脆弱部位９であって、溝５が存在する場合の説明図。Explanatory drawing when it is a fragile part 9 which occurs at the root of the brazing part, and a groove 5 is present. 同脆弱部位９であって、溝５が存在しない場合の説明図。Explanatory drawing when it is the same fragile part 9 and groove 5 does not exist. 本発明のフランジの構造における第２実施形態。A second embodiment in the flange structure of the present invention. 本発明のフランジの構造における他の実施形態。Other embodiments of the flange structure of the present invention.

次に、図面に基づいて本発明の実施の形態につき説明する。
図１は、本発明の熱交換器であって、その熱交換器本体１の長手方向両端部に一対のフランジ２が設けられ、その中間部の上方にブラケット３が突設された例である。熱交換器本体１と各フランジ２及びブラケット３とは、それらの接触部間で部分的にろう付固定されている。さらに、熱交換器本体の外周には一対の冷却水の出入口パイプ７が突設されている。この例では、一対のフランジ２の取付面６ａに図示しない別のフランジを介して、ガスパイプが接続される。また、ブラケット３の取付面６ｂが、図示しない機器等にボルトを介して締結固定される。 Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows an example of the heat exchanger of the present invention, in which a pair of flanges 2 are provided at both ends in the longitudinal direction of the heat exchanger main body 1, and a bracket 3 is provided above the intermediate portion thereof. .. The heat exchanger main body 1, each flange 2, and the bracket 3 are partially brazed and fixed between their contact portions. Further, a pair of inlet / outlet pipes 7 for cooling water are provided so as to project from the outer periphery of the heat exchanger body. In this example, the gas pipe is connected to the mounting surface 6a of the pair of flanges 2 via another flange (not shown). Further, the mounting surface 6b of the bracket 3 is fastened and fixed to a device or the like (not shown) via bolts.

一例として、図２に示す如く、フランジ２は偏平であり、その輪郭が略菱形に形成され、両端部に一対のボルト孔４が設けられている。フランジ２の輪郭は、菱形に限定されるものではなく、楕円形であってもよい。そして、取付面６ａの反対側の面には、ボルト孔４の孔縁部を取り囲むように、ボルト孔４の孔縁部の回りに、弧状の溝５が形成され、その溝５の両端がフランジ２の縁２ａ、２ｂまで延在する。この弧状の溝５は、図２に示す如く、ボルト孔４の中心Ｏに対してその孔縁と略同心の円弧状に刻設することができる。この溝５の形状により、ろう付の際、溝５に沿って流れてきたろう材を円滑に排出することができる。この溝５の深さは、図２（Ｂ）に示す如く、フランジ２の全幅に比べてその半分以下の深さとすることができる。 As an example, as shown in FIG. 2, the flange 2 is flat, its outline is formed in a substantially rhombus shape, and a pair of bolt holes 4 are provided at both ends. The contour of the flange 2 is not limited to a rhombus, and may be an ellipse. Then, on the surface opposite to the mounting surface 6a, an arcuate groove 5 is formed around the hole edge portion of the bolt hole 4 so as to surround the hole edge portion of the bolt hole 4, and both ends of the groove 5 are formed. It extends to the edges 2a and 2b of the flange 2. As shown in FIG. 2, the arc-shaped groove 5 can be formed in an arc shape substantially concentric with the hole edge of the center O of the bolt hole 4. Due to the shape of the groove 5, the brazing material flowing along the groove 5 can be smoothly discharged at the time of brazing. As shown in FIG. 2B, the depth of the groove 5 can be set to a depth of half or less of the total width of the flange 2.

次に、図３は同熱交換器の背面側から見たブラケット３およびフランジ２の斜視図である。また、図４はブラケット３の側面図であり、そのブラケット３は断面Ｌ字状に形成され、その下面側のろう付面８が熱交換器本体１の上面に接合される。
そして、そのブラケット３の取付面６ｂとは反対側の面に弧状の溝５が図１及び図４に示す如く、形成されている。即ち、ボルト孔４の孔縁部を取り囲むようにボルト孔４の孔縁部の回りに、弧状の溝５が刻設され、溝５の両端がブラケット３の両縁３ａ、３ｂまで達する。フランジ２の例と同様に、この弧状の溝５は、ボルト孔４の中心に対してその孔縁と略同心の円弧状に刻設することができる。
そして、この例では図１の如く、ブラケット３の先端が上方に位置した姿勢で、冷却水流通用のパイプ７等とともに炉内で一体にろう付される。また、フランジ２はその取付面６ａの反対側が熱交換器本体に部分的にろう付される。このとき溶融するろう材は、フランジに刻設された弧状の溝５によりせき止められる。 Next, FIG. 3 is a perspective view of the bracket 3 and the flange 2 as viewed from the back side of the heat exchanger. Further, FIG. 4 is a side view of the bracket 3, the bracket 3 is formed in an L-shaped cross section, and the brazed surface 8 on the lower surface side thereof is joined to the upper surface of the heat exchanger main body 1.
An arcuate groove 5 is formed on the surface of the bracket 3 opposite to the mounting surface 6b, as shown in FIGS. 1 and 4. That is, an arcuate groove 5 is engraved around the hole edge portion of the bolt hole 4 so as to surround the hole edge portion of the bolt hole 4, and both ends of the groove 5 reach both edges 3a and 3b of the bracket 3. Similar to the example of the flange 2, the arc-shaped groove 5 can be formed in an arc shape substantially concentric with the hole edge of the center of the bolt hole 4.
Then, in this example, as shown in FIG. 1, the bracket 3 is brazed integrally in the furnace together with the cooling water flow pipe 7 and the like in a posture in which the tip of the bracket 3 is located upward. Further, the flange 2 is partially brazed to the heat exchanger body on the opposite side of the mounting surface 6a. The brazing material that melts at this time is dammed by the arc-shaped groove 5 formed in the flange.

このようにしてなる熱交換器は、図１においてブラケット３の取付面６ｂが他の機器等の部材にボルト孔４及び図示しないボルトを介して接合される。また、一対のフランジ２の取付面６ａにはそれぞれ配管の図示しない別のフランジがボルトを介して接合される。
そして、ブラケット３の取付面６ｂが図示しないボルトを介して取付けられと、その締結に伴い、図４に示す如く、その実線状態から鎖線状態に僅かに変形する。その変形は主として溝５を境として起こる。 In the heat exchanger made in this way, in FIG. 1, the mounting surface 6b of the bracket 3 is joined to a member of another device or the like via a bolt hole 4 and a bolt (not shown). Further, another flange (not shown) of the pipe is joined to the mounting surface 6a of the pair of flanges 2 via bolts.
Then, when the mounting surface 6b of the bracket 3 is mounted via a bolt (not shown), the solid line state is slightly deformed to the chain line state as shown in FIG. 4 as the bracket 3 is fastened. The deformation mainly occurs at the groove 5.

すると、図５に示す如く、ブラケット３のろう付面８の縁部に応力集中が生じ、そこに脆弱部位９が生じる。なお、ブラケット３に溝５が存在しない場合には、図６に示す如く、脆弱部位９は図５よりもより広い範囲で、且つ大きく形成される。逆にいうと、弧状の溝５が応力集中の低減と、ろう材の流出防止を兼ねる。
このブラケット３に設けた弧状の溝５の応力集中の低減の効果は、フランジ２のろう付部にも同じことが言える。また、図１〜図４に示す如く、ブラケット３及びフランジ２の弧状の溝５は、ボルト孔４の中心に対してその孔縁と略同心の円弧状に刻設することができる。 Then, as shown in FIG. 5, stress concentration occurs at the edge of the brazed surface 8 of the bracket 3, and the fragile portion 9 is generated there. When the groove 5 does not exist in the bracket 3, the fragile portion 9 is formed in a wider range and larger than that in FIG. 5, as shown in FIG. Conversely, the arc-shaped groove 5 also serves to reduce stress concentration and prevent the brazing material from flowing out.
The effect of reducing the stress concentration of the arcuate groove 5 provided in the bracket 3 can be said to be the same for the brazed portion of the flange 2. Further, as shown in FIGS. 1 to 4, the arcuate groove 5 of the bracket 3 and the flange 2 can be formed in an arcuate shape substantially concentric with the hole edge of the center of the bolt hole 4.

図７は、本発明の第２実施形態のフランジの構造である。
第１実施形態との違いは、溝５が曲線からなる弧状ではなく、直線からなる溝５を刻設している。この溝形状の場合でも、本発明の効果である、ろう流れ防止機能及び応力集中防止機能を得ることができる。ブラケット３についても直線からなる溝５を適用することができる。また、図８に示す如く、フランジ２の縁２ａから縁２ｂまで角を持たない一直線状の溝５を刻設しても良い。 FIG. 7 shows the structure of the flange according to the second embodiment of the present invention.
The difference from the first embodiment is that the groove 5 is not an arc formed by a curved line, but a groove 5 formed by a straight line is carved. Even in the case of this groove shape, the wax flow prevention function and the stress concentration prevention function, which are the effects of the present invention, can be obtained. A groove 5 made of a straight line can also be applied to the bracket 3. Further, as shown in FIG. 8, a linear groove 5 having no angle may be formed from the edge 2a to the edge 2b of the flange 2.

本実施形態では、ボルト孔４の回りに形成される弧状の溝５は、取付面６の反対側の面に刻設している例を示したが、フランジ２またはブラケット３の取付面６の側にも同様に溝５を設けることもできる。 In the present embodiment, the arc-shaped groove 5 formed around the bolt hole 4 is carved on the surface opposite to the mounting surface 6, but the mounting surface 6 of the flange 2 or the bracket 3 A groove 5 may be provided on the side as well.

１ 熱交換器本体
２ フランジ
２ａ 縁
２ｂ 縁
３ ブラケット
３ａ 縁
３ｂ 縁
４ ボルト孔
５ 溝
６ 取付面
６ａ 取付面
６ｂ 取付面
７ パイプ
８ ろう付面
９ 脆弱部位
１０ 変形部
1 Heat exchanger body 2 Flange 2a Edge 2b Edge 3 Bracket 3a Edge 3b Edge 4 Bolt hole 5 Groove 6 Mounting surface 6a Mounting surface 6b Mounting surface 7 Pipe 8 Brazed surface 9 Vulnerable part 10 Deformed part

Claims (2)

熱交換器本体（１）の外周にろう付により取り付けられ、そのろう付面（８）から離れた自由端側に取付用のボルト孔（４）が形成された熱交換器のフランジまたはブラケットであって、
前記ろう付面（８）と前記ボルト孔（４）との中間に、両者間を二分するように溝（５）が形成されると共に、
前記溝（５）はブラケットまたはフランジの、取付面（６）またはその反対側の面に形成され、その溝（５）の両端がフランジまたはブラケットの縁まで形成され、
前記溝（５）の存在により、ろう付の際、フランジ（２）またはブラケット（３）のボルト孔（４）の孔縁部の近傍にろう材が侵入しないように形成すると共に、前記取付面（６）に他の機器本体またはたのフランジが締結される際、ろう付部に応力が集中しないように、前記取付面（６）のボルト孔（４）側が前記溝（５）を境に変形することが可能な熱交換器のフランジまたはブラケットの構造。 A flange or bracket of a heat exchanger that is attached to the outer circumference of the heat exchanger body (1) by brazing and has bolt holes (4) for attachment formed on the free end side away from the brazed surface (8). There,
Wherein the intermediate brazing surface (8) and said bolt hole (4), the groove so as to divide the therebetween (5) is formed Rutotomoni,
The groove (5) is formed on the mounting surface (6) or the opposite surface of the bracket or flange, and both ends of the groove (5) are formed up to the edge of the flange or bracket.
Due to the presence of the groove (5), the brazing material is formed so as not to enter the vicinity of the hole edge of the bolt hole (4) of the flange (2) or the bracket (3) during brazing, and the mounting surface is formed. When the flange of another device body or the other device is fastened to (6), the bolt hole (4) side of the mounting surface (6) is separated from the groove (5) so that the stress does not concentrate on the brazed portion. The structure of the flange or bracket of the heat exchanger that can be deformed. 前記溝（５）が弧状に形成された請求項１に記載された熱交換器のフランジまたはブラケットの構造。
The structure of the flange or bracket of the heat exchanger according to claim 1, wherein the groove (5) is formed in an arc shape.
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