JP5688355B2 - Flat plate of header plateless heat exchanger - Google Patents

Flat plate of header plateless heat exchanger Download PDF

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JP5688355B2
JP5688355B2 JP2011225092A JP2011225092A JP5688355B2 JP 5688355 B2 JP5688355 B2 JP 5688355B2 JP 2011225092 A JP2011225092 A JP 2011225092A JP 2011225092 A JP2011225092 A JP 2011225092A JP 5688355 B2 JP5688355 B2 JP 5688355B2
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大久保　厚
厚 大久保
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T.RAD CO., L T D.
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本発明は、ヘッダプレートを不要とする熱交換器であって、一対の溝型プレートを互いに嵌着して偏平チューブとし、その偏平チューブを積層して熱交換器のコアとしたものに関する。   The present invention relates to a heat exchanger that does not require a header plate, a pair of groove-type plates fitted together to form a flat tube, and the flat tubes are stacked to form a core of the heat exchanger.

下記の特許文献１および特許文献２は、ヘッダプレートを不要とする熱交換器である。
これらは金属板が溝型に曲折され、その両端部が底面側に拡開した一対のプレートを有し、それらが互いに嵌着して偏平チューブとなる。そして、複数のその偏平チューブをその長手方向両端部の拡開部で密着して積層し、外周をケーシングで被嵌し、全体を炉内で一体にろう付け固定したものである。そして、各チューブ内にはインナーフィンが介装されて、そこに第１流体が流通し、チューブの外面側には第２流体が流通する。 The following Patent Document 1 and Patent Document 2 are heat exchangers that do not require a header plate.
These have a pair of plates in which a metal plate is bent into a groove shape, and both ends of the metal plate expand toward the bottom surface, and they are fitted together to form a flat tube. A plurality of the flat tubes are adhered and stacked at the widened portions at both ends in the longitudinal direction, the outer periphery is fitted with a casing, and the whole is brazed and fixed integrally in the furnace. An inner fin is interposed in each tube, and the first fluid flows therethrough, and the second fluid flows on the outer surface side of the tube.

特開２０１１−４３２５７号公報JP 2011-43257 A 特開２００７−２２５１９０号公報JP 2007-225190 A

従来のヘッダプレートレス熱交換器の偏平チューブは、一対のプレートを互いに逆向きに嵌着するとき、それが上下方向に外れ易い欠点がある。また、一対の溝型プレートを嵌着しても、両プレートが長手方向に相対移動する場合がある。このような場合、多数の偏平チューブを積層して組立てることが容易ではない。   A flat tube of a conventional header plateless heat exchanger has a drawback that when a pair of plates are fitted in opposite directions, it tends to come off in the vertical direction. Moreover, even if a pair of groove type plates are fitted, both plates may move relative to each other in the longitudinal direction. In such a case, it is not easy to stack and assemble a large number of flat tubes.

そこで、本発明は一対のプレートを嵌着したとき、その嵌着状態を保持できるとともに、その保持手段の存在が他の部品と干渉しないようにした新たな偏平チューブを提案することを課題とする。   Therefore, the present invention has an object to propose a new flat tube which can hold the fitted state when a pair of plates are fitted, and prevents the presence of the holding means from interfering with other parts. .

請求項１に記載の本発明は、それぞれプレス成形により、底面(1)の両側に側壁(2)が立ち上げられ、その長手方向の両端で、その底面(1)が外側方向に拡開された拡開底部(3)を有する溝形の第１プレート(4)と第２プレート(5)とを有し、それらの両プレートの嵌着体により偏平チューブ(6)を構成し、複数の偏平チューブ(6)が前記拡開底部(3)で厚み方向に互いに密着して積層されてコア(7)を構成し、そのコア(7)の外周をケーシング(8)が被嵌し、そのケーシング(8)の内面が各プレート(4)(5)の両側壁(2)に接触し、それら各部品が組立てられた状態で、その各部品の接触部間が一体にろう付けされてなり、
各偏平チューブ(6)内に第１流体が流通し、各偏平チューブ(6)の外面間に第２流体が流通するヘッダプレートレス熱交換器の偏平チューブ(6)において、
第１プレート(4)の両側壁(2)の根元より先端側の方がその板厚分だけ内側に段付きに形成されて、その先端側に内側段部(9)を有し、その両側壁(2)の一部には、それぞれ前記段付きが存在せず、側壁(2)の全高さに渡り前記内側段部(9)と面一となる係合凹部(10)をその側壁(2)の外面に有し、
第２プレート(5)の両側壁(2)の内面は、前記第１プレート(4)の両側壁(2)の内側段部(9)の外面に整合し且つ、その第２プレート(5)の両側壁(2)の一部には、前記第１プレート(4)の前記係合凹部(10)に整合する爪部(11)がその高さ方向に突出すると共に、その爪部(11)の先端に係止部(12)が側壁(2)の内側へ折り曲げ形成され、
第１プレート(4)の両側壁(2)の内側段部(9)に、第２プレート(5)の両側壁(2)の内面が嵌着すると共に、その爪部(11)が前記係止用凹部(10)に嵌着し且つ、その爪部(11)先端の係止部(12)が第１プレート(4)の底面(1)の外縁に係止され、その係止部(12)の先端縁は、前記拡開底部(3)の高さ以下に位置されたことを特徴とするヘッダプレートレス熱交換器の偏平チューブである。 According to the present invention, the side wall (2) is raised on both sides of the bottom surface (1) by press molding, and the bottom surface (1) is expanded outward at both ends in the longitudinal direction. A flat plate (6) having a groove-shaped first plate (4) and a second plate (5) having a widened bottom portion (3). The flat tubes (6) are stacked in close contact with each other in the thickness direction at the expanded bottom portion (3) to form a core (7), and a casing (8) is fitted around the outer periphery of the core (7), The inner surface of the casing (8) is in contact with both side walls (2) of each plate (4) (5), and these parts are assembled, and the contact parts of each part are brazed together. ,
In the flat tube (6) of the header plateless heat exchanger in which the first fluid flows in each flat tube (6) and the second fluid flows between the outer surfaces of each flat tube (6),
The first plate (4) has a step on the side of the side wall (2) at the tip side that is formed inwardly by the thickness of the plate, and has an inner step (9) on the tip side. Part of the wall (2) does not have the step, and the engagement recess (10) is flush with the inner step (9) over the entire height of the side wall (2). 2) on the outer surface,
The inner surface of both side walls (2) of the second plate (5) is aligned with the outer surface of the inner step (9) of both side walls (2) of the first plate (4), and the second plate (5) A claw portion (11) that aligns with the engaging recess (10) of the first plate (4) protrudes in the height direction at a part of both side walls (2) of the first plate (4), and the claw portion (11 ) At the tip of the locking part (12) is bent to the inside of the side wall (2),
The inner surface of both side walls (2) of the second plate (5) is fitted to the inner step (9) of both side walls (2) of the first plate (4), and the claw portion (11) is engaged with the engagement. The locking portion (12) at the tip of the claw portion (11) is locked to the outer edge of the bottom surface (1) of the first plate (4) and is fitted into the locking recess (10). The leading edge of 12) is a flat tube of a header plateless heat exchanger, which is positioned below the height of the expanded bottom portion (3).

請求項２に記載の本発明は、請求項１に記載のヘッダプレートレス熱交換器の偏平チューブにおいて、
前記第２プレート(5)の爪部(11)の係止部(12)が断面への字状に曲折され、
前記第１プレート(4)の両側壁(2)の下端縁に内側へ断面への字状に曲折された内曲げ部(13)を有し、
第１プレート(4)の前記内曲げ部(13)の存在によって、両プレート(4)(5)を互いに嵌着する際、前記係止部(12)が第１プレート(4)の外面に円滑に案内されるように構成されたヘッダプレートレス熱交換器の偏平チューブである。 According to a second aspect of the present invention, in the flat tube of the header plateless heat exchanger according to the first aspect,
The locking portion (12) of the claw portion (11) of the second plate (5) is bent into a shape of a cross section,
The first plate (4) has inner bent portions (13) bent in the shape of a cross section inward at the lower end edges of both side walls (2) of the first plate (4),
Due to the presence of the inner bent portion (13) of the first plate (4), when the plates (4) and (5) are fitted together, the locking portion (12) is placed on the outer surface of the first plate (4). It is the flat tube of the header plateless heat exchanger comprised so that it might guide smoothly.

請求項３に記載の本発明は、請求項１または請求項２に記載のヘッダプレートレス熱交換器の偏平チューブにおいて、
前記第１プレート(4)の両側壁(2)の外面に、その長手方向に離間して複数の前記係合凹部(10)が形成され、その係合凹部(10)に整合する位置で、前記第２プレート(5)に複数の爪部(11)および係止部(12)が設けられたヘッダプレートレス熱交換器の偏平チューブである。 According to a third aspect of the present invention, in the flat tube of the header plateless heat exchanger according to the first or second aspect,
A plurality of engaging recesses (10) are formed in the outer surface of both side walls (2) of the first plate (4) so as to be spaced apart from each other in the longitudinal direction, and are aligned with the engaging recesses (10). It is a flat tube of a header plateless heat exchanger in which a plurality of claw portions (11) and locking portions (12) are provided on the second plate (5).

本発明のヘッダプレートレス熱交換器の偏平チューブ６は、その第１プレート４の両側壁２の外側に、第２プレート５の両側壁２が嵌着すると共に、その爪部11が前記係合凹部10に嵌着し且つ、その爪部11先端の係止部12が第１プレート４の底面１の外縁に係止され、その係止部12の先端縁は、前記拡開底部３の高さ以下に位置されたものである。   In the flat tube 6 of the header plateless heat exchanger of the present invention, the both side walls 2 of the second plate 5 are fitted on the outside of the both side walls 2 of the first plate 4, and the claw portions 11 are engaged with the engagement. The engaging portion 12 at the tip of the claw portion 11 is engaged with the outer edge of the bottom surface 1 of the first plate 4, and the leading edge of the engaging portion 12 is the height of the expanded bottom portion 3. It is located below.

そのため、第１プレート４の外面に第２プレート５を被嵌したとき、係止部12の係合により、両プレート４，５間を厚み方向に保持することができ、熱交換器の組立てが容易で、量産性が高くなる。このとき、第２プレート５の爪部11と第１プレート４の前記係合凹部10が整合するので、両プレート４，５が長手方向にも拘束され、その方向に位置ずれすることがない。
その第２プレート５の爪部11は、板厚分凹んだ第１プレート４の係合凹部10に嵌着されるため、その外面が第１プレート４の外面と面一になり、それらがケーシング８の内面と接触し、その接触部を隙間なくろう付けすることが可能となる。
また、爪部11の係止部12の先端高さは、拡開底部３の高さより低いから、各偏平チューブ６をその拡開底部で積層したとき、係止部12が隣接するプレートと干渉することがない。 Therefore, when the second plate 5 is fitted on the outer surface of the first plate 4, the engagement between the locking portions 12 can hold the plates 4 and 5 in the thickness direction, and the heat exchanger can be assembled. Easy and mass productivity is high. At this time, since the claw portion 11 of the second plate 5 and the engaging recess 10 of the first plate 4 are aligned, the plates 4 and 5 are also restrained in the longitudinal direction and are not displaced in that direction.
Since the claw portion 11 of the second plate 5 is fitted into the engagement concave portion 10 of the first plate 4 that is recessed by the plate thickness, the outer surface thereof is flush with the outer surface of the first plate 4, and they are the casing. 8 is brought into contact with the inner surface, and the contact portion can be brazed without gaps.
Further, since the tip height of the locking portion 12 of the claw portion 11 is lower than the height of the expanded bottom portion 3, when the flat tubes 6 are stacked on the expanded bottom portion, the locking portion 12 interferes with the adjacent plate. There is nothing to do.

上記構成において、請求項２に記載のように、第１プレート４の両側壁２の下端縁に内側へ断面への字状に曲折された内曲げ部13を有する場合には、第１プレート４と、第２プレート５とを互いに嵌着する際、への字状の係止部12が第１プレート４の外面に円滑に案内されて、偏平チューブ６の組立てが容易且つ、迅速に行われる効果がある。
上記構成において、請求項３に記載のように、第１プレート４の外面に複数の係合凹部10を形成し、第２プレートに複数の爪部11および係止部12を設けた場合には、両プレート４，５の嵌着状態をより安定して保持できる。 In the above configuration, as described in claim 2, when the lower end edge of the both side walls 2 of the first plate 4 has the inner bent portion 13 bent in a cross-sectional shape inwardly, the first plate 4 When the second plate 5 and the second plate 5 are fitted to each other, the U-shaped locking portion 12 is smoothly guided to the outer surface of the first plate 4 so that the flat tube 6 can be assembled easily and quickly. effective.
In the above configuration, when a plurality of engaging recesses 10 are formed on the outer surface of the first plate 4 and a plurality of claw portions 11 and locking portions 12 are provided on the second plate, as described in claim 3 The fitted state of both plates 4 and 5 can be held more stably.

本発明の偏平チューブの分解斜視図。The disassembled perspective view of the flat tube of this invention. 同要部拡大図であって、図１のII部拡大図。It is the principal part enlarged view, Comprising: The II section enlarged view of FIG. 同偏平チューブの組立て状態の斜視図。The perspective view of the assembly state of the flat tube. 同要部であって、図３のIV部拡大図。FIG. 4 is an enlarged view of a portion IV of FIG. 3. 図４のＶ−Ｖ矢視断面略図。FIG. 5 is a schematic cross-sectional view taken along arrow VV in FIG. 4. 図４のVI−VI矢視断面略図。VI-VI arrow cross-sectional schematic of FIG. 本発明のヘッダプレートレス熱交換器の要部斜視図。The principal part perspective view of the header plateless heat exchanger of this 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。
本発明のヘッダプレートレス熱交換器は、図７に示すごとく、多数の偏平チューブ６をその両端の拡開底部３で互いに密着して積層し、全体の開口部の外周が方形となるコア７を構成する。そして、そのコア７の外周にケーシング８を被嵌し、そのケーシング８の長手方向両端（同図では右側を省略）にヘッダ17が接続される。それら各部品の互いに接触する少なくとも一方側にろう材を配置し、熱交換器を組立てた状態で、全体を高温の炉内に挿入し、一体にろう付け固定するものである。このとき、ケーシング８の内面と、偏平チューブ６を構成する第１プレート４、第２プレート５の各側壁２との間は大部分が接触し、その接触部間が接合される。 Next, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 7, the header plateless heat exchanger according to the present invention has a large number of flat tubes 6 stacked in close contact with each other at the expanded bottom portions 3 at both ends thereof, and a core 7 whose outer periphery of the entire opening is rectangular. Configure. A casing 8 is fitted on the outer periphery of the core 7, and headers 17 are connected to both ends of the casing 8 in the longitudinal direction (the right side is omitted in the figure). The brazing material is arranged on at least one side of each of these parts that are in contact with each other, and the heat exchanger is assembled, and the whole is inserted into a high-temperature furnace and brazed and fixed together. At this time, most of the inner surface of the casing 8 and the side walls 2 of the first plate 4 and the second plate 5 constituting the flat tube 6 are in contact with each other, and the contact portions are joined.

（発明の要部）
このようなヘッダプレートレス熱交換器の偏平チューブは、第１プレート４と第２プレート５との嵌着体よりなる。第１プレート４、第２プレート５はそれぞれ金属板のプレス成形により底面１の両側に側壁２が立ち上げられている。さらに、その長手方向両端で、底面１が外面方向に拡開された拡開底部３を有し、全体が溝型に形成される。また、それらの外面側には冷却水攪拌用の多数のディンプル15が突設され、その高さが拡開底部３の高さに整合する。また、底面１の長手方向両端部には一対の冷却水案内用の突条14が外側に突出形成されている。 (Main part of the invention)
Such a flat tube of the header plateless heat exchanger is formed by an insertion body of the first plate 4 and the second plate 5. In the first plate 4 and the second plate 5, side walls 2 are raised on both sides of the bottom surface 1 by press molding of a metal plate. Further, at both ends in the longitudinal direction, the bottom surface 1 has an expanded bottom portion 3 that is expanded in the outer surface direction, and the whole is formed in a groove shape. In addition, a large number of dimples 15 for cooling water agitation are provided on the outer surface side thereof, and the height thereof matches the height of the expanded bottom portion 3. In addition, a pair of cooling water guide protrusions 14 are formed on both ends of the bottom surface 1 in the longitudinal direction so as to protrude outward.

第１プレート４の側壁２の先端縁は、図１、図２に示す如く、内側に段付きに形成され、そこに内側段部９が設けられている。この内側段部９は、側壁２の先端縁の全長にわたって形成されている。その内側段部９の段付き深さは第２プレート５の板厚と同一である。さらに、その内側段部９の先端縁には、断面への字状に曲折された第２プレート案内用の内曲げ部13が存在する。そして、第２プレート５の両側壁２の内面側の間隔は、第１プレート４の両側壁２の各内側段部９の外面間隔に整合する。   As shown in FIGS. 1 and 2, the leading edge of the side wall 2 of the first plate 4 is formed with a step inside, and an inner step 9 is provided there. The inner step 9 is formed over the entire length of the leading edge of the side wall 2. The step depth of the inner step portion 9 is the same as the thickness of the second plate 5. Further, an inner bent portion 13 for guiding the second plate, which is bent in a shape of a cross section, exists at the leading edge of the inner step portion 9. And the space | interval of the inner surface side of the both side walls 2 of the 2nd plate 5 is matched with the outer surface space | interval of each inner side step part 9 of the both side walls 2 of the 1st plate 4. FIG.

また、第１プレート４の両側壁２には、互いに離間して一対の係合凹部10が形成されている。この係合凹部10は、図２に示す如く、内側段部９の平面と面一に形成されている。
そして、第２プレート５には、第１プレート４の係合凹部10の幅に整合する爪部11が一対突設され、その爪部11の先端には、係止部12が断面への字状に図５のごとく曲折されている。 A pair of engaging recesses 10 are formed on both side walls 2 of the first plate 4 so as to be separated from each other. As shown in FIG. 2, the engaging recess 10 is formed flush with the plane of the inner step 9.
The second plate 5 is provided with a pair of claw portions 11 that match the width of the engaging recess 10 of the first plate 4, and a locking portion 12 is formed in the cross section at the tip of the claw portion 11. It is bent as shown in FIG.

第１プレート４、第２プレート５の内外面にはろう材が被覆または塗布され、両プレートが図示しないインナーフィンを介して、互いに逆向きに対向して、第１プレート４の外側に第２プレート５が嵌着される。このとき、第２プレート５の爪部11が第１プレート４の係合凹部10に嵌着し、その係止部12が第１プレート４の底部外面の縁部に係止される。その状態を図４および図５に示す。また、爪部11以外の部分では図６のごとく、第２プレート５の側壁２が第１プレート４の内側段部９に嵌着される。そして、その係合凹部10と爪部11との嵌着により、両プレートはその厚み方向に保持されるとともに、その長手方向にも拘束される。そのため、多数の偏平チューブ６の積層およびコアの組立てが容易となる。   The inner and outer surfaces of the first plate 4 and the second plate 5 are coated or coated with a brazing material, and both plates face each other in an opposite direction via inner fins (not shown) so that the second plate is placed outside the first plate 4. The plate 5 is fitted. At this time, the claw portion 11 of the second plate 5 is fitted into the engaging recess 10 of the first plate 4, and the locking portion 12 is locked to the edge of the bottom outer surface of the first plate 4. The state is shown in FIG. 4 and FIG. Further, in the portion other than the claw portion 11, as shown in FIG. 6, the side wall 2 of the second plate 5 is fitted to the inner step portion 9 of the first plate 4. Then, due to the engagement between the engaging recess 10 and the claw portion 11, both plates are held in the thickness direction and also restrained in the longitudinal direction. Therefore, it becomes easy to stack a large number of flat tubes 6 and assemble a core.

そして、その外周に図７に示すごとく、ケーシング８が被嵌され、その内面の大部分が各偏平チューブ６の両側面に接触する。また、ケーシング８の長手方向両端には開口19が穿設され、そこに図示しない冷却水パイプの端部が嵌入される。また、ケーシング８の両端開口にはヘッダ17が接続され、全体が組立てられた状態で高温の炉内に挿入され、一体的にろう付け固定されるものである。   Then, as shown in FIG. 7, the casing 8 is fitted on the outer periphery, and most of the inner surface is in contact with both side surfaces of each flat tube 6. Moreover, the opening 19 is drilled in the longitudinal direction both ends of the casing 8, and the edge part of the cooling water pipe which is not shown in figure is inserted there. In addition, headers 17 are connected to the openings at both ends of the casing 8, and are inserted into a high-temperature furnace in an assembled state, and are integrally brazed and fixed.

１ 底面
２ 側壁
３ 拡開底部
４ 第１プレート
５ 第２プレート
６ 偏平チューブ
７ コア
８ ケーシング DESCRIPTION OF SYMBOLS 1 Bottom surface 2 Side wall 3 Expanded bottom part 4 1st plate 5 2nd plate 6 Flat tube 7 Core 8 Casing

９ 内側段部
10 係合凹部
11 爪部
12 係止部
13 内曲げ部 9 Inner step
10 Engaging recess
11 Claw
12 Locking part
13 Inner bend

14 突条
15 ディンプル
16 冷却水マニホールド
17 ヘッダ
18 段付き部
19 開口 14 ridges
15 dimples
16 Cooling water manifold
17 Header
18 Stepped part
19 opening

Claims (3)

それぞれプレス成形により、底面(1)の両側に側壁(2)が立ち上げられ、その長手方向の両端で、その底面(1)が外側方向に拡開された拡開底部(3)を有する溝形の第１プレート(4)と第２プレート(5)とを有し、それらの両プレートの嵌着体により偏平チューブ(6)を構成し、複数の偏平チューブ(6)が前記拡開底部(3)で厚み方向に互いに密着して積層されてコア(7)を構成し、そのコア(7)の外周をケーシング(8)が被嵌し、そのケーシング(8)の内面が各プレート(4)(5)の両側壁(2)に接触し、それら各部品が組立てられた状態で、その各部品の接触部間が一体にろう付けされてなり、
各偏平チューブ(6)内に第１流体が流通し、各偏平チューブ(6)の外面間に第２流体が流通するヘッダプレートレス熱交換器の偏平チューブ(6)において、
第１プレート(4)の両側壁(2)の根元より先端側の方がその板厚分だけ内側に段付きに形成されて、その先端側に内側段部(9)を有し、その両側壁(2)の一部には、それぞれ前記段付きが存在せず、側壁(2)の全高さに渡り前記内側段部(9)と面一となる係合凹部(10)をその側壁(2)の外面に有し、
第２プレート(5)の両側壁(2)の内面は、前記第１プレート(4)の両側壁(2)の内側段部(9)の外面に整合し且つ、その第２プレート(5)の両側壁(2)の一部には、前記第１プレート(4)の前記係合凹部(10)に整合する爪部(11)がその高さ方向に突出すると共に、その爪部(11)の先端に係止部(12)が側壁(2)の内側へ折り曲げ形成され、
第１プレート(4)の両側壁(2)の内側段部(9)に、第２プレート(5)の両側壁(2)の内面が嵌着すると共に、その爪部(11)が前記係止用凹部(10)に嵌着し且つ、その爪部(11)先端の係止部(12)が第１プレート(4)の底面(1)の外縁に係止され、その係止部(12)の先端縁は、前記拡開底部(3)の高さ以下に位置されたことを特徴とするヘッダプレートレス熱交換器の偏平チューブ。 By press molding, the side wall (2) is raised on both sides of the bottom surface (1), and the groove having an expanded bottom portion (3) whose bottom surface (1) is expanded outward at both longitudinal ends. The first plate (4) and the second plate (5) are shaped, and a flat tube (6) is constituted by the fittings of these two plates, and a plurality of flat tubes (6) are formed on the expanded bottom portion. In (3), the core (7) is laminated in close contact with each other in the thickness direction, the casing (8) is fitted around the outer periphery of the core (7), and the inner surface of the casing (8) is each plate ( 4) In contact with both side walls (2) of (5), and the parts are assembled, the contact parts of the parts are brazed together,
In the flat tube (6) of the header plateless heat exchanger in which the first fluid flows in each flat tube (6) and the second fluid flows between the outer surfaces of each flat tube (6),
The first plate (4) has a step on the side of the side wall (2) at the tip side that is formed inwardly by the thickness of the plate, and has an inner step (9) on the tip side. Part of the wall (2) does not have the step, and the engagement recess (10) is flush with the inner step (9) over the entire height of the side wall (2). 2) on the outer surface,
The inner surface of both side walls (2) of the second plate (5) is aligned with the outer surface of the inner step (9) of both side walls (2) of the first plate (4), and the second plate (5) A claw portion (11) that aligns with the engaging recess (10) of the first plate (4) protrudes in the height direction at a part of both side walls (2) of the first plate (4), and the claw portion (11 ) At the tip of the locking part (12) is bent to the inside of the side wall (2),
The inner surface of both side walls (2) of the second plate (5) is fitted to the inner step (9) of both side walls (2) of the first plate (4), and the claw portion (11) is engaged with the engagement. The locking portion (12) at the tip of the claw portion (11) is locked to the outer edge of the bottom surface (1) of the first plate (4) and is fitted into the locking recess (10). A flat plate of a header plateless heat exchanger, wherein a tip edge of 12) is positioned below the height of the expanded bottom portion (3). 請求項１に記載のヘッダプレートレス熱交換器の偏平チューブにおいて、
前記第２プレート(5)の爪部(11)の係止部(12)が断面への字状に曲折され、
前記第１プレート(4)の両側壁(2)の下端縁に内側へ断面への字状に曲折された内曲げ部(13)を有し、
第１プレート(4)の前記内曲げ部(13)の存在によって、両プレート(4)(5)を互いに嵌着する際、前記係止部(12)が第１プレート(4)の外面に円滑に案内されるように構成されたヘッダプレートレス熱交換器の偏平チューブ。 In the flat tube of the header plateless heat exchanger according to claim 1,
The locking portion (12) of the claw portion (11) of the second plate (5) is bent into a shape of a cross section,
The first plate (4) has inner bent portions (13) bent in the shape of a cross section inward at the lower end edges of both side walls (2) of the first plate (4),
Due to the presence of the inner bent portion (13) of the first plate (4), when the plates (4) and (5) are fitted together, the locking portion (12) is placed on the outer surface of the first plate (4). Flat plate of header plateless heat exchanger configured to be guided smoothly. 請求項１または請求項２に記載のヘッダプレートレス熱交換器の偏平チューブにおいて、
前記第１プレート(4)の両側壁(2)の外面に、その長手方向に離間して複数の前記係合凹部(10)が形成され、その係合凹部(10)に整合する位置で、前記第２プレート(5)に複数の爪部(11)および係止部(12)が設けられたヘッダプレートレス熱交換器の偏平チューブ。 In the flat tube of the header plateless heat exchanger according to claim 1 or 2,
A plurality of engaging recesses (10) are formed in the outer surface of both side walls (2) of the first plate (4) so as to be spaced apart from each other in the longitudinal direction, and are aligned with the engaging recesses (10). A flat plate of a header plateless heat exchanger, wherein the second plate (5) is provided with a plurality of claw portions (11) and locking portions (12).
JP2011225092A 2011-10-12 2011-10-12 Flat plate of header plateless heat exchanger Active JP5688355B2 (en)

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JP2015078823A (en) * 2013-10-18 2015-04-23 株式会社ティラド Header plateless type heat exchanger
JP2015081744A (en) * 2013-10-24 2015-04-27 サンデン株式会社 Heat exchanger
KR101460250B1 (en) * 2014-03-20 2014-11-10 임은섭 Plate Heat Exchanger including a 3-Piece Flow Path Layer
JP6276114B2 (en) * 2014-06-11 2018-02-07 株式会社ティラド Flat tube for header plateless heat exchanger
JP6343183B2 (en) * 2014-06-20 2018-06-13 株式会社ティラド Flat tube for header plateless heat exchanger
JP2016183833A (en) * 2015-03-26 2016-10-20 株式会社ティラド Header plate-less heat exchanger
ES2679868B1 (en) * 2017-02-16 2019-06-21 Valeo Termico Sa HEAT EXCHANGER FOR GASES, ESPECIALLY FOR AN ENGINE EXHAUST GAS, AND MANUFACTURING METHOD OF SUCH EXCHANGER
ES2679696B1 (en) * 2017-02-16 2019-06-21 Valeo Termico Sa HEAT EXCHANGER FOR GASES, ESPECIALLY FOR EXHAUST GASES OF AN ENGINE, GAS CIRCULATION DUCT OF SUCH EXCHANGER AND MANUFACTURING METHOD OF SUCH EXCHANGER
EP3734211B1 (en) * 2017-12-27 2023-08-09 T.Rad Co., Ltd. Header plateless type heat exchanger
CN210426171U (en) * 2019-06-03 2020-04-28 浙江盾安热工科技有限公司 Flat pipe and heat exchanger

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