WO2015037688A1 - Tank structure for header-plate-less heat exchanger - Google Patents

Tank structure for header-plate-less heat exchanger Download PDF

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Publication number
WO2015037688A1
WO2015037688A1 PCT/JP2014/074159 JP2014074159W WO2015037688A1 WO 2015037688 A1 WO2015037688 A1 WO 2015037688A1 JP 2014074159 W JP2014074159 W JP 2014074159W WO 2015037688 A1 WO2015037688 A1 WO 2015037688A1
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Prior art keywords
tank
heat exchanger
flat tube
contact
tank structure
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PCT/JP2014/074159
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French (fr)
Japanese (ja)
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中村　洋一
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株式会社ティラド
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Priority to EP14844912.7A priority Critical patent/EP3045853A1/en
Publication of WO2015037688A1 publication Critical patent/WO2015037688A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/163—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F28D7/1653—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having a square or rectangular shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/1684—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
    • 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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0221—Header boxes or end plates formed by stacked elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing

Definitions

  • the present invention relates to a header plateless heat exchanger tank structure formed by laminating flat tubes with both ends bulging, and having improved air tightness and liquid tightness between the core and the tank.
  • the header plateless heat exchanger forms a core by laminating the flat tubes 2 whose both ends bulge in the thickness direction at the bulged portion, and does not require a header plate. It is.
  • the casing 11 is fitted on the outer periphery of the core 3 made of a laminated body of the flat tubes 2, and the tank 4 is fitted on both ends of the core 3 so that the components are integrally brazed and fixed to each other.
  • the flat tube 2 is formed by fitting a pair of an upper plate 2a and a lower plate 2b, which are each bent into a groove shape (right side omitted).
  • the casing 11 includes a casing main body 11a formed in a groove shape and an end lid that closes between both side walls.
  • the tank 4 is integrally formed into a cylindrical shape having a square cross section by press molding.
  • JP 2011-2133 A JP2011-23320A
  • the flat tube 2 is composed of a fitting body of a pair of upper and lower plates 2a and 2b, and a gap is generated in the fitting portion B as shown in FIG. Further, a groove-like gap is generated at the corner C of the laminated body of the flat tubes 2. This is because R occurs at the corners of the plates 2a and 2b that are press-formed into a groove shape. Furthermore, in FIG. 9, a gap is generated in a portion A between the tank 4 and the flat tube 2, and airtightness and liquid tightness may be impaired.
  • an object of the present invention is to provide a tank structure in which a gap is not generated particularly in a brazed portion between the tank 4 and the core 3.
  • Fixed to form the core (3) In the tank structure of the header plateless heat exchanger in which the openings of the pair of tanks (4) are connected to both ends of the core (3), The tank (4) is formed in a square cross section with an upper end plate portion (5) and a lower end plate portion (6) positioned at both upper and lower ends in the stacking direction, and a pair of side plate portions (7) orthogonal thereto.
  • the flat tube (2) is composed of a pair of plates (2a) (2b) each formed in a groove shape and fitted to each other with their groove bottoms facing each other, and each of the plates (2a) (2b). Both side walls of the groove protrude from the groove bottom end edge (1a) toward the tank (4) to form a side convex wall (10), When the flat tubes (2) are laminated, the outer edge (10a) in the bulging direction of the side convex wall (10) is flush with the outer surface of the bulging portion (1) and adjacent to each other.
  • the outer convex edges (10a) of the flat tubes (2) are in contact with each other, and on the side opposite to the bulging direction, the side convex walls of the pair of plates (2a) (2b) forming the flat tubes (2)
  • the inner end faces (10b) of (10) are in contact with each other
  • the front ends of the pair of side plate portions (7) of the tank (4) are in contact with the inside of the side convex wall (10) of each flat tube (2), and the contact portions are brazed and fixed to each other.
  • a casing (11) is fitted on the outer periphery of the core (3), It is a tank structure of a header plateless heat exchanger which is brazed and fixed to each other in a state where the side convex wall (10) is sandwiched between the side plate portion (7) and the casing (11) of the tank (4).
  • the tip of the side plate portion (7) of the tank (4) is bent inward by the thickness of the side convex wall (10) to form a stepped portion (7a), and the stepped portion (7a) is on the side. It is the tank structure of the header plateless heat exchanger fixed to the inner surface of the convex wall (10) by brazing.
  • the upper end plate portion (5) and the lower end plate portion (6) protrude from the side plate portion (7) toward the core (3) to form an upper insertion portion (8) and a lower insertion portion (9).
  • the outer surface of the upper insertion portion (8) is in contact with the inner surface of the upper side portion of the uppermost flat tube (2) in the stacking direction, and the outer surface of the lower insertion portion (9) is the lower side portion of the lowermost flat tube (2).
  • the header plateless heat exchanger tank structure is characterized in that the flat tube (2) and the tank (4) are fitted in contact with the inner surface, and the flat tube (2) and the tank (4) are brazed and fixed at the fitting portion.
  • Header plateless in which the core side tip is separated at the boundary between the side plate (7), the upper end plate (5), and the lower end plate (6), and the notch (15) is formed there. It is a tank structure of a heat exchanger.
  • both side walls of the plates 2a and 2b constituting the flat tube 2 are provided so as to protrude from the groove bottom end edge 1a of the bulging portion 1 to the tank 4 side.
  • Form the The front end portions of the pair of side plate portions 7 of the tank 4 are brazed and fixed to each other while being in contact with the inside of the side convex wall 10 of each flat tube 2.
  • each outer side of the adjacent flat tube 2 The edges 10a are in contact with each other;
  • the inner end surfaces 10b of the side convex walls 10 of the pair of plates 2a and 2b forming each flat tube 2 are in contact with each other, and therefore between the plates 2a and 2b forming the flat tube.
  • the gap (B portion in FIG. 9) is closed.
  • the gap (C portion in FIG. 9) existing between the flat tubes 2 is closed. Further, the inside is closed by the side plate portion 7.
  • the upper insertion portion of the tank 4 protruding from the side plate portion 7 is in contact with the inner surface of the upper side portion of the uppermost flat tube in the stacking direction, and the lower insertion portion 9 protruding in the same manner is the highest.
  • the flat tube is inserted into contact with the inner surface of the lower side of the lower flat tube, and the flat tube and the tank are brazed and fixed at the inserted portion.
  • the protruding upper insertion portion 8 and lower insertion portion 9 can be easily deformed, and the contact portion of the core 3 with the flat tube 2 can be brought into close contact. Therefore, the liquid tightness and air tightness of the brazing part can be secured.
  • FIG. 1 is an exploded perspective view of a tank structure of a header plateless heat exchanger according to the present invention.
  • 2A is an exploded view of a main part of the flat tube 2
  • FIG. 2B is an enlarged view of a B part of FIG. 2A
  • FIG. 2C is a perspective view of a main part showing a combined state of the flat tube 2.
  • FIG. 3 is an assembly explanatory view of the tank 4 and the flat tube 2.
  • FIG. 4 is a perspective view of main parts showing the assembled state.
  • FIG. 5 is a longitudinal sectional view of the same. 6 is a view taken along arrow VI-VI in FIG.
  • FIG. 7 is an assembly explanatory view of the tank 4 and the flat tube 2 according to the second embodiment of the present invention.
  • FIG. 8 is a longitudinal sectional view of a main part of a tank structure of a conventional header plateless heat exchanger.
  • 9 is an enlarged cross-sectional view taken along the line IX-IX in FIG.
  • the flat tube 2 is formed of a fitting body of an upper plate 2 a and a lower plate 2 b each formed in a groove shape. And the upper part of the side wall of the lower plate 2b is formed into a stepped portion bent inward by the thickness of the upper plate 2a, thereby forming a stepped portion 2c. And the upper end part of the lower plate 2b fits inside the upper plate 2a.
  • Both end portions in the longitudinal direction of the plates 2a and 2b have a bulging portion 1 bulging in the thickness direction, and tip portions of both side walls are grooves on the upper and lower sides of the groove bottoms of the plates 2a and 2b. Projecting outward from the bottom edge 1a, a pair of side convex walls 10 are formed. The tip of the stepped portion 2c on the side wall of the lower plate 2b is aligned with the lower side of the groove bottom of the upper plate 2a.
  • the casing 11 includes a casing main body 11 a formed in a groove shape and an end lid 11 b that closes between both side walls thereof.
  • the end lid 11b is formed in a shallow groove shape that matches the outer periphery of the casing body 11a.
  • the tank 4 is integrally formed by a press machine, and as shown in FIG. 1, the entire tank 4 is formed in a shallow funnel shape, with one end opening formed in a circular shape and the other end opening formed in a square shape. And it is formed in the cross-sectional square by the upper end board part 5 and the lower end board part 6 which oppose up and down, and a pair of side board part 7 arrange
  • a pair of stepped portions 7 a that are bent inwardly by the thickness of the flat tube 2 protrude from both side plate portions 7 of the tank 4.
  • the outer width between the stepped portions 7 a matches the inner width between the left and right side convex walls 10 of the flat tube 2.
  • the boundary between the stepped portion 7a and the upper fitting portion 8 and the lower fitting portion 9 is separated by a notch portion 15, whereby the upper fitting portion 8, the lower fitting portion 9, and the stepped portion 7a are elastically deformed, respectively. It is made possible.
  • the tank 4 constructed in this way has its upper fitting portion 8 fitted inside the plate 2 a of the flat tube 2 at the top of the stacking direction of the core 3, and the lower fitting portion 9 is laminated.
  • the flat tube 2 at the bottom in the direction is inserted into contact with the plate 2b of the flat tube 2.
  • the stepped portions 7 a of the pair of side walls 7 are fitted inside the side convex walls 10 of each flat tube 2.
  • the tip edge of the stepped portion 7a abuts on the edge 1a of each plate 2a, 2b and the tip 2d (FIG. 2) of the stepped portion 2c on the side wall of the lower plate 2b.
  • FIG. A brazing material is coated or applied in advance between the contact portions of each component.
  • the casing body 11 a is fitted onto the core 3 and the tank 4 from above and the end lid 11 b is fitted from below.
  • the upper insertion portion 8, the lower insertion portion 9, and the stepped portion 7 a are elastically deformed due to the presence of the notch portions 15, respectively, and the adjacent components are brazed in a close contact state.
  • the outer periphery of the casing 11 is fastened and brazed inside with a jig (not shown). Then, airtightness and liquid-tightness can be ensured without generating a gap between the tank 4 and each flat tube 2.
  • the clearance gap of A, B, C of FIG. 9 in the conventional heat exchanger is each obstruct
  • FIG. 7 is an assembly explanatory view of the tank 4 and the flat tube 2 according to the second embodiment of the present invention. This example is different from that of FIG. 3 only in the position of the notch 15.
  • the notch 15 in this example is formed in each plane of the upper end plate 5 and the lower end plate 6 of the tank 4. The presence of the notch 15 facilitates the formation of the stepped portion 7a and the formation of the upper insertion portion 8 and the lower insertion portion 9.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The objective is to eliminate gaps at the joint part between a tank (4) and a core (3), and thus to ensure air-tightness and liquid-tightness. Flat tubes (2) are formed by pairs of plates (2a, 2b) each of which is formed in a groove shape, the walls on both sides of each plate (2a, 2b) protrude toward the tank (4) from a groove bottom leading edge (1a) of a protruding part (1) to form protruding side walls (10). The outer edges (10a) of the protruding side walls (10) in the protruding direction are aligned so as to be flush with each other on the outer surface of the protruding part (1), and when the flat tubes (2) are stacked, the respective outer edges (10a) of adjacent flat tubes (2) contact each other. Furthermore, on the side opposite the protruding direction, inner edge surfaces (10b) of the protruding side walls (10) of the pair of plates (2a, 2b) forming each flat tube (2) contact each other. In addition, with the front ends of a pair of side plate parts (7) of the tank (4) making contact with the inside of the protruding side walls (10) of each flat tube (2), the various contacting parts are soldered to each other.

Description

ヘッダープレートレス熱交換器のタンク構造Header plateless heat exchanger tank structure
　本発明は、両端が膨出した偏平チューブを積層してなるヘッダープレートレス熱交換器のタンク構造であって、そのコアとタンクとの気密・液密性を改良したものに関する。 The present invention relates to a header plateless heat exchanger tank structure formed by laminating flat tubes with both ends bulging, and having improved air tightness and liquid tightness between the core and the tank.
　ヘッダープレートレス熱交換器は、図８及び図９に示す如く、両端が厚み方向に膨出した偏平チューブ２をその膨出部で積層することによりコアを形成し、ヘッダープレートを必要としないものである。そして、偏平チューブ２の積層体からなるコア３の外周にケーシング１１を被嵌すると共に、コア３の両端にタンク４を被嵌し、互いに各部品間を一体にろう付け固定したものである。
　なお、偏平チューブ２は図９に示す如く、夫々溝形に曲折した（右側省略）一対の上側のプレート２ａと下側のプレート２ｂとを互いに嵌着したものからなる。また、ケーシング１１は図８に示す如く、溝形に形成されたケーシング本体１１ａとその両側壁間を閉塞する端蓋とからなる。さらに、タンク４はプレス成形により横断面方形の筒型に一体成形されたものである。 As shown in FIGS. 8 and 9, the header plateless heat exchanger forms a core by laminating the flat tubes 2 whose both ends bulge in the thickness direction at the bulged portion, and does not require a header plate. It is. The casing 11 is fitted on the outer periphery of the core 3 made of a laminated body of the flat tubes 2, and the tank 4 is fitted on both ends of the core 3 so that the components are integrally brazed and fixed to each other.
As shown in FIG. 9, the flat tube 2 is formed by fitting a pair of an upper plate 2a and a lower plate 2b, which are each bent into a groove shape (right side omitted). Further, as shown in FIG. 8, the casing 11 includes a casing main body 11a formed in a groove shape and an end lid that closes between both side walls. Further, the tank 4 is integrally formed into a cylindrical shape having a square cross section by press molding.
特開２０１１−２１３３号公報JP 2011-2133 A 特開２０１１−２３２０２０号公報JP2011-23320A
　このようなヘッダープレートレス熱交換器とタンク４とは、ろう付けにより隙間なく接合する必要がある。ところが、偏平チューブ２は、上下一対のプレート２ａ，　２ｂの嵌着体からなり、図９に示す如く、その嵌着部Ｂに隙間が生じる。さらに、各偏平チューブ２の積層体の隅Ｃの部分に溝状の隙間が生じる。これは、溝形にプレス成形された各プレート２ａ，　２ｂのコーナにＲが生じるからである。
　さらには、図９においてタンク４と偏平チューブ２との間の部分Ａに隙間が生じ、気密性及び液密性が損なわれる場合がある。それはタンク４がプレス成形により一体形成されているため、成形後に開口部にスプリングバックが生じ、偏平チューブ２とタンク４とを密着し難いことにもとづく。それらの隙間が生じると、ろう付け中にいわゆる、ろう切れが生じ、タンクの気密性及び液密性を損なうことになる。
　そこで本発明は、特にタンク４とコア３とのろう付け部に隙間の生じないタンク構造を提供することを課題とする。 Such a header plateless heat exchanger and the tank 4 need to be joined without gaps by brazing. However, the flat tube 2 is composed of a fitting body of a pair of upper and lower plates 2a and 2b, and a gap is generated in the fitting portion B as shown in FIG. Further, a groove-like gap is generated at the corner C of the laminated body of the flat tubes 2. This is because R occurs at the corners of the plates 2a and 2b that are press-formed into a groove shape.
Furthermore, in FIG. 9, a gap is generated in a portion A between the tank 4 and the flat tube 2, and airtightness and liquid tightness may be impaired. This is based on the fact that since the tank 4 is integrally formed by press molding, a spring back is generated in the opening after molding, and the flat tube 2 and the tank 4 are difficult to adhere to each other. When these gaps occur, so-called brazing occurs during brazing, and the air tightness and liquid tightness of the tank are impaired.
Accordingly, an object of the present invention is to provide a tank structure in which a gap is not generated particularly in a brazed portion between the tank 4 and the core 3.
　請求項１に記載の本発明は、両端部が厚み方向に膨出された膨出部（１）を有する複数の偏平チューブ（２）が積層されて、その膨出部（１）で互いに接触固定してコア（３）を形成し、
　そのコア（３）の両端に一対のタンク（４）の開口が接続されたヘッダープレートレス熱交換器のタンク構造において、
　そのタンク（４）は、前記積層方向の上下両端に位置する上端板部（５）と下端板部（６）と、それらに直交する一対の側板部（７）とで横断面方形に形成され、
　前記偏平チューブ（２）は、それぞれ溝形に形成された一対のプレート（２ａ）（２ｂ）がその溝底を対向して互いに嵌着されたものからなり、その各プレート（２ａ）（２ｂ）の両側壁は、その溝底先端縁（１ａ）よりタンク（４）側に突設されて、側凸壁（１０）を形成し、
　その側凸壁（１０）の膨出方向の外端縁（１０ａ）が前記膨出部（１）の外面に面一に整合して、各偏平チューブ（２）が積層されたとき、隣接する偏平チューブ（２）の各外端縁（１０ａ）どうしが互いに接触し、その膨出方向と反対側では、各偏平チューブ（２）を形成する一対のプレート（２ａ）（２ｂ）の側凸壁（１０）の内端面（１０ｂ）が互いに接触され、
　前記タンク（４）の一対の側板部（７）の先端部は、各偏平チューブ（２）の前記側凸壁（１０）の内側に接触した状態で、各接触部が互いにろう付け固定されたヘッダープレートレス熱交換器のタンク構造である。
　請求項２に記載の本発明は、請求項１に記載のヘッダープレートレス熱交換器のタンク構造において、前記コア（３）の外周にケーシング（１１）が被嵌され、
　前記側凸壁（１０）がタンク（４）の側板部（７）とケーシング（１１）とで挟持された状態で、互いにろう付け固定されたヘッダープレートレス熱交換器のタンク構造である。
　請求項３に記載の本発明は、請求項１または請求項２に記載のヘッダープレートレス熱交換器のタンク構造において、
　前記タンク（４）の側板部（７）の先端部が前記側凸壁（１０）の厚み分内側に曲折されて、段付き部（７ａ）を構成し、その段付き部（７ａ）が側凸壁（１０）の内面にろう付け固定されたヘッダープレートレス熱交換器のタンク構造である。
　請求項４に記載の本発明は、請求項１~請求項３のいずれかのヘッダープレートレス熱交換器のタンク構造において、
　前記上端板部（５）と下端板部（６）は、前記側板部（７）よりコア（３）側に突出して上嵌入部（８）と下嵌入部（９）とを形成し、その上嵌入部（８）の外面が積層方向の最上段の偏平チューブ（２）の上辺部の内面に接すると共に、下嵌入部（９）の外面が最下段の偏平チューブ（２）の下辺部の内面に接して嵌入され、その嵌入部で偏平チューブ（２）とタンク（４）とが、ろう付け固定されたことを特徴とするヘッダープレートレス熱交換器のタンク構造である。
　請求項５に記載の本発明は、請求項１~請求項４のいずれかのヘッダープレートレス熱交換器のタンク構造において、
　側板部（７）と上端板部（５）および下端板部（６）との境で、それらのコア側先端部が分離されて、そこに欠切部（１５）が形成されたヘッダープレートレス熱交換器のタンク構造である。 In the present invention according to claim 1, a plurality of flat tubes (2) each having a bulging portion (1) whose both end portions bulge in the thickness direction are stacked and contact each other at the bulging portion (1). Fixed to form the core (3),
In the tank structure of the header plateless heat exchanger in which the openings of the pair of tanks (4) are connected to both ends of the core (3),
The tank (4) is formed in a square cross section with an upper end plate portion (5) and a lower end plate portion (6) positioned at both upper and lower ends in the stacking direction, and a pair of side plate portions (7) orthogonal thereto. ,
The flat tube (2) is composed of a pair of plates (2a) (2b) each formed in a groove shape and fitted to each other with their groove bottoms facing each other, and each of the plates (2a) (2b). Both side walls of the groove protrude from the groove bottom end edge (1a) toward the tank (4) to form a side convex wall (10),
When the flat tubes (2) are laminated, the outer edge (10a) in the bulging direction of the side convex wall (10) is flush with the outer surface of the bulging portion (1) and adjacent to each other. The outer convex edges (10a) of the flat tubes (2) are in contact with each other, and on the side opposite to the bulging direction, the side convex walls of the pair of plates (2a) (2b) forming the flat tubes (2) The inner end faces (10b) of (10) are in contact with each other,
The front ends of the pair of side plate portions (7) of the tank (4) are in contact with the inside of the side convex wall (10) of each flat tube (2), and the contact portions are brazed and fixed to each other. It is a tank structure of a header plateless heat exchanger.
According to a second aspect of the present invention, in the tank structure of the header plateless heat exchanger according to the first aspect, a casing (11) is fitted on the outer periphery of the core (3),
It is a tank structure of a header plateless heat exchanger which is brazed and fixed to each other in a state where the side convex wall (10) is sandwiched between the side plate portion (7) and the casing (11) of the tank (4).
According to a third aspect of the present invention, in the tank structure of the header plateless heat exchanger according to the first or second aspect,
The tip of the side plate portion (7) of the tank (4) is bent inward by the thickness of the side convex wall (10) to form a stepped portion (7a), and the stepped portion (7a) is on the side. It is the tank structure of the header plateless heat exchanger fixed to the inner surface of the convex wall (10) by brazing.
According to a fourth aspect of the present invention, in the tank structure of the header plateless heat exchanger according to any one of the first to third aspects,
The upper end plate portion (5) and the lower end plate portion (6) protrude from the side plate portion (7) toward the core (3) to form an upper insertion portion (8) and a lower insertion portion (9). The outer surface of the upper insertion portion (8) is in contact with the inner surface of the upper side portion of the uppermost flat tube (2) in the stacking direction, and the outer surface of the lower insertion portion (9) is the lower side portion of the lowermost flat tube (2). The header plateless heat exchanger tank structure is characterized in that the flat tube (2) and the tank (4) are fitted in contact with the inner surface, and the flat tube (2) and the tank (4) are brazed and fixed at the fitting portion.
According to a fifth aspect of the present invention, in the tank structure of the header plateless heat exchanger according to any one of the first to fourth aspects,
Header plateless in which the core side tip is separated at the boundary between the side plate (7), the upper end plate (5), and the lower end plate (6), and the notch (15) is formed there. It is a tank structure of a heat exchanger.
　請求項１に記載の発明は、偏平チューブ２を構成する各プレート２ａ、２ｂの両側壁が、その膨出部１の溝底先端縁１ａよりタンク４側に突設されて、側凸壁１０を形成し、
　タンク４の一対の側板部７の先端部が、各偏平チューブ２の前記側凸壁１０の内側に接触した状態で、互いにろう付け固定されたものである。そして、その側凸壁１０の膨出方向の外端縁１０ａが前記膨出部１の外面に面一に整合して、各偏平チューブ２が積層されたとき、隣接する偏平チューブ２の各外端縁１０ａどうしが互いに接触し、
　その膨出方向と反対側では、各偏平チューブ２を形成する一対のプレート２ａ、２ｂの側凸壁１０の内端面１０ｂが互いに接触したから、その偏平チューブを形成する各プレート２ａ、２ｂ間の隙間（図９のＢ部）が閉塞される。さらに、各偏平チューブ２間に存在する隙間（図９のＣ部）が閉塞される。また、その内側は側板部７で閉塞される。
　その結果、タンク４、コア３、ケーシング１１の各部品間のろう付け部の液密性、気密性を確保できる。
　請求項２に記載の発明は、各偏平チューブ２の側凸壁１０がタンク４の側板部７とケーシング１１とで挟持された状態で、互いにろう付け固定されたものであるから、側凸壁１０とタンク４の側板部７との液密性、気密性をより確実に実現できる。
　請求項３に記載の発明は、前記タンク４の側板部７の先端部が前記側凸壁１０の厚み分内側に曲折されたから、タンク４と側凸壁１０との接触部が大きくなり、それらの気密、液密を向上できる。
　請求項４に記載の発明は、その側板部７より突出したタンク４の上嵌入部が積層方向の最上段の偏平チューブの上辺部の内面に接すると共に、同様に突出した下嵌入部９が最下段の偏平チューブの下辺部の内面に接して嵌入され、その嵌入部で偏平チューブとタンクとがろう付け固定されたものである。この場合、突出する上嵌入部８および下嵌入部９は変形が容易となり、コア３の偏平チューブ２との接触部を密着することができる。そのため、ろう付け部の液密性、気密性を確保できる。
　上記構成に加えて、請求項５に記載のように、欠切部１５を側板部７と上端板部５，下端板部６との境に設けた場合には、それら各部の変形が容易となり、各接触部をさらに密着してろう付けの気密性、液密性を確保できる。 According to the first aspect of the present invention, both side walls of the plates 2a and 2b constituting the flat tube 2 are provided so as to protrude from the groove bottom end edge 1a of the bulging portion 1 to the tank 4 side. Form the
The front end portions of the pair of side plate portions 7 of the tank 4 are brazed and fixed to each other while being in contact with the inside of the side convex wall 10 of each flat tube 2. And when the outer end edge 10a of the bulging direction of the side convex wall 10 aligns flush with the outer surface of the bulging portion 1 and each flat tube 2 is laminated, each outer side of the adjacent flat tube 2 The edges 10a are in contact with each other;
On the side opposite to the bulging direction, the inner end surfaces 10b of the side convex walls 10 of the pair of plates 2a and 2b forming each flat tube 2 are in contact with each other, and therefore between the plates 2a and 2b forming the flat tube. The gap (B portion in FIG. 9) is closed. Furthermore, the gap (C portion in FIG. 9) existing between the flat tubes 2 is closed. Further, the inside is closed by the side plate portion 7.
As a result, it is possible to ensure the liquid tightness and air tightness of the brazed portion between the tank 4, the core 3, and the casing 11.
Since the side convex wall 10 of each flat tube 2 is sandwiched between the side plate portion 7 of the tank 4 and the casing 11, the invention according to claim 2 is brazed and fixed to each other. Liquid tightness and air tightness between the side plate part 7 of the tank 10 and the tank 4 can be realized more reliably.
In the invention according to claim 3, since the front end portion of the side plate portion 7 of the tank 4 is bent inward by the thickness of the side convex wall 10, the contact portion between the tank 4 and the side convex wall 10 becomes large. Can improve air tightness and liquid tightness.
In the invention according to claim 4, the upper insertion portion of the tank 4 protruding from the side plate portion 7 is in contact with the inner surface of the upper side portion of the uppermost flat tube in the stacking direction, and the lower insertion portion 9 protruding in the same manner is the highest. The flat tube is inserted into contact with the inner surface of the lower side of the lower flat tube, and the flat tube and the tank are brazed and fixed at the inserted portion. In this case, the protruding upper insertion portion 8 and lower insertion portion 9 can be easily deformed, and the contact portion of the core 3 with the flat tube 2 can be brought into close contact. Therefore, the liquid tightness and air tightness of the brazing part can be secured.
In addition to the above configuration, when the notch 15 is provided at the boundary between the side plate portion 7 and the upper end plate portion 5 and the lower end plate portion 6 as described in claim 5, the deformation of each portion is facilitated. Further, it is possible to secure the airtightness and liquid tightness of brazing by further bringing the contact portions into close contact.
　図１は本発明のヘッダープレートレス熱交換器のタンク構造の分解斜視図。
　図２の（Ａ）はその偏平チューブ２の要部分解図、（Ｂ）は（Ａ）のＢ部拡大図、（Ｃ）はその偏平チューブ２の組み合わせ状態を示す要部斜視図。
　図３は同タンク４と偏平チューブ２との組立て説明図。
　図４は同組立て状態を示す要部斜視図。
　図５は同縦断面図。
　図６は図５のＶＩ−ＶＩ矢視図。
　図７は本発明の第２実施例のタンク４と偏平チューブ２との組立て説明図。
　図８は従来型ヘッダープレートレス熱交換器のタンク構造の要部縦断面図。
　図９は図７のＩＸ−ＩＸ断面拡大図。 FIG. 1 is an exploded perspective view of a tank structure of a header plateless heat exchanger according to the present invention.
2A is an exploded view of a main part of the flat tube 2, FIG. 2B is an enlarged view of a B part of FIG. 2A, and FIG. 2C is a perspective view of a main part showing a combined state of the flat tube 2.
FIG. 3 is an assembly explanatory view of the tank 4 and the flat tube 2.
FIG. 4 is a perspective view of main parts showing the assembled state.
FIG. 5 is a longitudinal sectional view of the same.
6 is a view taken along arrow VI-VI in FIG.
FIG. 7 is an assembly explanatory view of the tank 4 and the flat tube 2 according to the second embodiment of the present invention.
FIG. 8 is a longitudinal sectional view of a main part of a tank structure of a conventional header plateless heat exchanger.
9 is an enlarged cross-sectional view taken along the line IX-IX in FIG.
　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。
　この熱交換器は、図１に示す如く、多数の偏平チューブ２をその両端の膨出部１で積層しコア３を形成する。その膨出部を除いた部分は、各偏平チューブ２間に隙間を生じ、そこへ冷却水が供給される。その偏平チューブ２は、図２に示す如く、夫々溝形に形成された上側のプレート２ａと下側のプレート２ｂとの嵌着体からなる。そして、下側のプレート２ｂの側壁の上部は、上側プレート２ａの板厚分内側に曲折した段付きに成形されて、そこに段付き部２ｃを形成する。そして、上側のプレート２ａの内側に下側のプレート２ｂの上端部が嵌着する。それらプレート２ａ，プレート２ｂの長手方向両端部は、厚み方向に膨出された膨出部１を有し、その両側壁の先端部が、各プレート２ａ、２ｂの溝底の上辺、下辺の溝底先端縁１ａより外方に突出し、一対の側凸壁１０を形成する。なお下側プレート２ｂの側壁の段付き部２ｃの先端は、上側プレート２ａの溝底の下辺と整合する。
　その側凸壁１０の上下方向の外端縁１０ａが膨出部１の外面に面一に整合して、各偏平チューブ２が積層されたとき、隣接する偏平チューブ２の各外端縁１０ａどうしが互いに隙間なく接触する。また、その膨出方向と反対側では、各偏平チューブ２を形成する一対のプレート２ａ、２ｂの側凸壁１０の内端面１０ｂが互いに隙間なく接触される。
　そして、プレート２ａ，　２ｂは、図２（Ｂ）（Ｃ）の如く嵌着されて偏平チューブ２を形成する。この例では偏平チューブ２内にはインナーフィン１３が図１に示す如く、介装されている。
　次に、ケーシング１１は、図１に示す如く、溝形に形成されたケーシング本体１１ａとその両側壁間を閉塞する端蓋１１ｂとからなる。端蓋１１ｂは、ケーシング本体１１ａの外周に整合する浅い溝形に形成されている。
　次に、タンク４はプレス機械により一体成形されたものからなり、図１に示す如く、全体が浅い漏斗状に形成され、その一端開口が円形に、他端開口が方形に形成されている。
　そして、上下に対向する上端板部５と下端板部６と、その両側に配置された一対の側板部７とにより横断面方形に形成されている。さらに、上端板部５，下端板部６には、偏平チューブ２の板厚分だけ内側に段付きに形成された上嵌入部８及び下嵌入部９が設けられ、それが側板部７よりコア３側に突出する。その上嵌入部８，下嵌入部９の幅は、偏平チューブ２の内幅に整合する。また、タンク４の両側板部７には、偏平チューブ２の板厚分内側に曲折した一対の段付き部７ａが突出する。段付き部７ａ間の外幅は、偏平チューブ２の左右の側凸壁１０間の内幅に整合する。また、段付き部７ａと上嵌入部８，下嵌入部９との境は、欠切部１５によって分離され、それにより上嵌入部８，下嵌入部９，段付き部７ａは、夫々弾性変形可能に形成されている。
　このようにしてなるタンク４は、図３及び図４に示す如く、その上嵌入部８がコア３の積層方向最上段の偏平チューブ２のプレート２ａの内側に嵌入し、下嵌入部９が積層方向最下段の偏平チューブ２のプレート２ｂに接触して嵌入される。それと共に、一対の側壁７の段付き部７ａは、各偏平チューブ２の側凸壁１０の内側に嵌入する。その段付き部７ａの先端縁は、図５に示す如く、各プレート２ａ、２ｂの端縁１ａおよび下側プレート２ｂの側壁の段付き部２ｃの先端２ｄ（図２）に当接する。そして、図４、図５の如く組立てられる。各部品の接触部間には予め、ろう材が被覆又は塗布される。そして、図５において、ケーシング本体１１ａが上方から、端蓋１１ｂが下方からコア３及びタンク４に被嵌される。すると、最上段の偏平チューブ２の上側のプレート２ａの端部は、タンク４の上嵌入部８とケーシング本体１１ａとに挟持される。また、最下段の偏平チューブ２の下側のプレート２ｂの端部は、タンク４の下嵌入部９と端蓋１１ｂとに挟持される。さらに、各偏平チューブ２の側凸壁１０も図６の如く、段付き部７ａとケーシング１１とに挟持される。
　そして、ろう付け時には、それらが互いに密着した状態でろう付けされる。このとき、上嵌入部８及び下嵌入部９，段付き部７ａは、夫々欠切部１５の存在により弾性変形し、互いに隣接する部品間が密着状態でろう付けされる。そのためには、ケーシング１１の外周を図示しない治具で、内側に締結してろう付けする。すると、タンク４と各偏平チューブ２との間に隙間が生じることなく、気密性及び液密性を確保できる。そして、従来の熱交換器における図９のＡ，Ｂ，Ｃの隙間が夫々閉塞され、気密性及び液密性が確保される。即ち、図９のＡ部は上嵌入部８及び下嵌入部９，段付き部７ａの弾性変形により偏平チューブ２の内面に密着する。また図９のＢ部は、各偏平チューブ２が積層されたとき、隣接する偏平チューブ２の各外端縁１０ａどうしが互いに接触し、隙間がない。
　その膨出方向と反対側では、各偏平チューブ２を形成する一対のプレート２ａ，２ｂの側凸壁１０の内端面１０ｂが互いに接触しているから、そこにも隙間がない。さらに、その偏平チューブを形成する各プレート２ａ、２ｂ間の内側（図９のＢ部）をタンク４の側板部７が閉塞する。さらに、その側板部７は各偏平チューブ２間の図９のＣ部の内側も閉塞する。
　なお、ケーシング１１は図１に示す如く、そのケーシング本体１１ａの長手方向両端部に冷却水出入口１２が形成され、そこから冷却水が流入して、それが各偏平チューブ２間に供給される。また、一方のタンク４側から一例として高温の排ガスが流入し、各偏平チューブ２内を流通して冷却水との間に熱交換が行われる。
　次に、図７は、本発明の第２実施例のタンク４と偏平チューブ２との組立て説明図である。この例が図３のそれと異なる点は、欠切部１５の位置のみである。この例の欠切部１５はタンク４の上端板部５および下端板部６の各平面に形成されている。その欠切部１５の存在により、段付き部７ａの成形および上嵌入部８、下嵌入部９の成形を容易にしている。 Next, embodiments of the present invention will be described with reference to the drawings.
In this heat exchanger, as shown in FIG. 1, a large number of flat tubes 2 are laminated at the bulging portions 1 at both ends to form a core 3. Except for the bulging portion, a gap is formed between the flat tubes 2, and cooling water is supplied thereto. As shown in FIG. 2, the flat tube 2 is formed of a fitting body of an upper plate 2 a and a lower plate 2 b each formed in a groove shape. And the upper part of the side wall of the lower plate 2b is formed into a stepped portion bent inward by the thickness of the upper plate 2a, thereby forming a stepped portion 2c. And the upper end part of the lower plate 2b fits inside the upper plate 2a. Both end portions in the longitudinal direction of the plates 2a and 2b have a bulging portion 1 bulging in the thickness direction, and tip portions of both side walls are grooves on the upper and lower sides of the groove bottoms of the plates 2a and 2b. Projecting outward from the bottom edge 1a, a pair of side convex walls 10 are formed. The tip of the stepped portion 2c on the side wall of the lower plate 2b is aligned with the lower side of the groove bottom of the upper plate 2a.
When the flat tubes 2 are stacked such that the vertical outer end edges 10a of the side convex walls 10 are flush with the outer surface of the bulging portion 1, the outer end edges 10a of the adjacent flat tubes 2 are adjacent to each other. Touch each other without gaps. Further, on the side opposite to the bulging direction, the inner end faces 10b of the side convex walls 10 of the pair of plates 2a and 2b forming each flat tube 2 are in contact with each other without any gap.
The plates 2a and 2b are fitted as shown in FIGS. 2B and 2C to form the flat tube 2. In this example, an inner fin 13 is interposed in the flat tube 2 as shown in FIG.
Next, as shown in FIG. 1, the casing 11 includes a casing main body 11 a formed in a groove shape and an end lid 11 b that closes between both side walls thereof. The end lid 11b is formed in a shallow groove shape that matches the outer periphery of the casing body 11a.
Next, the tank 4 is integrally formed by a press machine, and as shown in FIG. 1, the entire tank 4 is formed in a shallow funnel shape, with one end opening formed in a circular shape and the other end opening formed in a square shape.
And it is formed in the cross-sectional square by the upper end board part 5 and the lower end board part 6 which oppose up and down, and a pair of side board part 7 arrange | positioned at the both sides. Further, the upper end plate portion 5 and the lower end plate portion 6 are provided with an upper insertion portion 8 and a lower insertion portion 9 that are stepped on the inner side by the thickness of the flat tube 2. Projects to the 3 side. The widths of the upper insertion portion 8 and the lower insertion portion 9 match the inner width of the flat tube 2. In addition, a pair of stepped portions 7 a that are bent inwardly by the thickness of the flat tube 2 protrude from both side plate portions 7 of the tank 4. The outer width between the stepped portions 7 a matches the inner width between the left and right side convex walls 10 of the flat tube 2. Further, the boundary between the stepped portion 7a and the upper fitting portion 8 and the lower fitting portion 9 is separated by a notch portion 15, whereby the upper fitting portion 8, the lower fitting portion 9, and the stepped portion 7a are elastically deformed, respectively. It is made possible.
As shown in FIGS. 3 and 4, the tank 4 constructed in this way has its upper fitting portion 8 fitted inside the plate 2 a of the flat tube 2 at the top of the stacking direction of the core 3, and the lower fitting portion 9 is laminated. The flat tube 2 at the bottom in the direction is inserted into contact with the plate 2b of the flat tube 2. At the same time, the stepped portions 7 a of the pair of side walls 7 are fitted inside the side convex walls 10 of each flat tube 2. As shown in FIG. 5, the tip edge of the stepped portion 7a abuts on the edge 1a of each plate 2a, 2b and the tip 2d (FIG. 2) of the stepped portion 2c on the side wall of the lower plate 2b. And it assembles like FIG. 4, FIG. A brazing material is coated or applied in advance between the contact portions of each component. In FIG. 5, the casing body 11 a is fitted onto the core 3 and the tank 4 from above and the end lid 11 b is fitted from below. Then, the end of the upper plate 2a of the uppermost flat tube 2 is sandwiched between the upper fitting portion 8 of the tank 4 and the casing body 11a. Further, the end of the lower plate 2b on the lowermost flat tube 2 is sandwiched between the lower fitting portion 9 of the tank 4 and the end lid 11b. Further, the side convex wall 10 of each flat tube 2 is also sandwiched between the stepped portion 7a and the casing 11 as shown in FIG.
And at the time of brazing, they are brazed in the state which mutually contact | adhered. At this time, the upper insertion portion 8, the lower insertion portion 9, and the stepped portion 7 a are elastically deformed due to the presence of the notch portions 15, respectively, and the adjacent components are brazed in a close contact state. For this purpose, the outer periphery of the casing 11 is fastened and brazed inside with a jig (not shown). Then, airtightness and liquid-tightness can be ensured without generating a gap between the tank 4 and each flat tube 2. And the clearance gap of A, B, C of FIG. 9 in the conventional heat exchanger is each obstruct | occluded, and airtightness and liquid tightness are ensured. That is, the portion A in FIG. 9 is in close contact with the inner surface of the flat tube 2 due to the elastic deformation of the upper insertion portion 8, the lower insertion portion 9, and the stepped portion 7a. 9B, when the flat tubes 2 are stacked, the outer end edges 10a of the adjacent flat tubes 2 are in contact with each other, and there is no gap.
On the side opposite to the bulging direction, the inner end faces 10b of the side convex walls 10 of the pair of plates 2a, 2b forming each flat tube 2 are in contact with each other, so there is no gap there. Furthermore, the side plate portion 7 of the tank 4 closes the inside (B portion in FIG. 9) between the plates 2a and 2b forming the flat tube. Further, the side plate portion 7 also closes the inside of the portion C in FIG. 9 between the flat tubes 2.
As shown in FIG. 1, the casing 11 has cooling water inlets / outlets 12 formed at both ends in the longitudinal direction of the casing main body 11 a, and cooling water flows in from there and is supplied between the flat tubes 2. Further, as an example, high-temperature exhaust gas flows from one tank 4 side, and flows through each flat tube 2 to exchange heat with cooling water.
Next, FIG. 7 is an assembly explanatory view of the tank 4 and the flat tube 2 according to the second embodiment of the present invention. This example is different from that of FIG. 3 only in the position of the notch 15. The notch 15 in this example is formed in each plane of the upper end plate 5 and the lower end plate 6 of the tank 4. The presence of the notch 15 facilitates the formation of the stepped portion 7a and the formation of the upper insertion portion 8 and the lower insertion portion 9.
　１　　　膨出部
　１ａ　　溝底先端縁
　２　　　偏平チューブ
　２ａ　　プレート
　２ｂ　　プレート
　２ｃ　　段付き部
　２ｄ　　先端縁
　３　　　コア
　４　　　タンク
　５　　　上端板部
　６　　　下端板部
　７　　　側板部
　７ａ　　段付き部
　８　　　上嵌入部
　９　　　下嵌入部
　１０　　側凸壁
　１０ａ　外端縁
　１０ｂ　内端縁
　１１　　ケーシング
　１１ａ　ケーシング本体
　１１ｂ　端蓋
　１２　　冷却水出入口
　１３　　インナーフィン
　１５　　欠切部 DESCRIPTION OF SYMBOLS 1 Swelling part 1a Groove bottom tip edge 2 Flat tube 2a Plate 2b Plate 2c Stepped part 2d Tip edge 3 Core 4 Tank 5 Upper end plate part 6 Lower end plate part 7 Side plate part 7a Stepped part 8 Upper insertion part 9 Lower insertion part DESCRIPTION OF SYMBOLS 10 Side convex wall 10a Outer edge 10b Inner edge 11 Casing 11a Casing main body 11b End cover 12 Cooling water inlet / outlet 13 Inner fin 15 Notch

Claims (5)

  1. 　両端部が厚み方向に膨出された膨出部（１）を有する複数の偏平チューブ（２）が積層されて、その膨出部（１）で互いに接触固定してコア（３）を形成し、
    　そのコア（３）の両端に一対のタンク（４）の開口が接続されたヘッダープレートレス熱交換器のタンク構造において、
    　そのタンク（４）は、前記積層方向の上下両端に位置する上端板部（５）と下端板部（６）と、それらに直交する一対の側板部（７）とで横断面方形に形成され、
    　前記偏平チューブ（２）は、それぞれ溝形に形成された一対のプレート（２ａ）（２ｂ）がその溝底を対向して互いに嵌着されたものからなり、その各プレート（２ａ）（２ｂ）の両側壁は、その溝底先端縁（１ａ）よりタンク（４）側に突設されて、側凸壁（１０）を形成し、
    　その側凸壁（１０）の膨出方向の外端縁（１０ａ）が前記膨出部（１）の外面に面一に整合して、各偏平チューブ（２）が積層されたとき、隣接する偏平チューブ（２）の各外端縁（１０ａ）どうしが互いに接触し、
    　その膨出方向と反対側では、各偏平チューブ（２）を形成する一対のプレート（２ａ）（２ｂ）の側凸壁（１０）の内端面（１０ｂ）が互いに接触され、
    　前記タンク（４）の一対の側板部（７）の先端部は、各偏平チューブ（２）の前記側凸壁（１０）の内側に接触した状態で、各接触部が互いにろう付け固定されたヘッダープレートレス熱交換器のタンク構造。     A plurality of flat tubes (2) having a bulging portion (1) whose both end portions bulge in the thickness direction are stacked, and the bulging portion (1) is fixed in contact with each other to form a core (3). ,
    In the tank structure of the header plateless heat exchanger in which the openings of the pair of tanks (4) are connected to both ends of the core (3),
    The tank (4) is formed in a square cross section with an upper end plate portion (5) and a lower end plate portion (6) positioned at both upper and lower ends in the stacking direction, and a pair of side plate portions (7) orthogonal thereto. ,
    The flat tube (2) is composed of a pair of plates (2a) (2b) each formed in a groove shape and fitted to each other with their groove bottoms facing each other, and each of the plates (2a) (2b). Both side walls of the groove protrude from the groove bottom end edge (1a) toward the tank (4) to form a side convex wall (10),
    When the flat tubes (2) are laminated, the outer edge (10a) in the bulging direction of the side convex wall (10) is flush with the outer surface of the bulging portion (1) and adjacent to each other. The outer end edges (10a) of the flat tube (2) are in contact with each other,
    On the side opposite to the bulging direction, the inner end faces (10b) of the side convex walls (10) of the pair of plates (2a) (2b) forming each flat tube (2) are in contact with each other,
    The front ends of the pair of side plate portions (7) of the tank (4) are in contact with the inside of the side convex wall (10) of each flat tube (2), and the contact portions are brazed and fixed to each other. Header plateless heat exchanger tank structure.
  2. 　請求項１に記載のヘッダープレートレス熱交換器のタンク構造において、
    　前記コア（３）の外周にケーシング（１１）が被嵌され、
    　前記側凸壁（１０）が、タンク（４）の側板部（７）とケーシング（１１）とで挟持された状態で、互いにろう付け固定されたヘッダープレートレス熱交換器のタンク構造。     In the tank structure of the header plateless heat exchanger according to claim 1,
    A casing (11) is fitted on the outer periphery of the core (3),
    A tank structure of a header plateless heat exchanger in which the side convex wall (10) is brazed and fixed to each other while being sandwiched between a side plate (7) and a casing (11) of the tank (4).
  3. 　請求項１または請求項２に記載のヘッダープレートレス熱交換器のタンク構造において、
    　前記タンク（４）の側板部（７）の先端部が前記側凸壁（１０）の厚み分内側に曲折されて、段付き部（７ａ）を構成し、その段付き部（７ａ）が側凸壁（１０）の内面にろう付け固定されたヘッダープレートレス熱交換器のタンク構造。     In the tank structure of the header plateless heat exchanger according to claim 1 or 2,
    The tip of the side plate portion (7) of the tank (4) is bent inward by the thickness of the side convex wall (10) to form a stepped portion (7a), and the stepped portion (7a) is on the side. A tank structure of a header plateless heat exchanger fixed to the inner surface of the convex wall (10) by brazing.
  4. 　請求項１~請求項３のいずれかのヘッダープレートレス熱交換器のタンク構造において、
    　前記上端板部（５）と下端板部（６）は、前記側板部（７）よりコア（３）側に突出して上嵌入部（８）と下嵌入部（９）とを形成し、その上嵌入部（８）の外面が積層方向の最上段の偏平チューブ（２）の上辺部の内面に接すると共に、下嵌入部（９）の外面が最下段の偏平チューブ（２）の下辺部の内面に接して嵌入され、その嵌入部で偏平チューブ（２）とタンク（４）とが、ろう付け固定されたことを特徴とするヘッダープレートレス熱交換器のタンク構造。     In the tank structure of the header plateless heat exchanger according to any one of claims 1 to 3,
    The upper end plate portion (5) and the lower end plate portion (6) protrude from the side plate portion (7) toward the core (3) to form an upper insertion portion (8) and a lower insertion portion (9). The outer surface of the upper insertion portion (8) is in contact with the inner surface of the upper side portion of the uppermost flat tube (2) in the stacking direction, and the outer surface of the lower insertion portion (9) is the lower side portion of the lowermost flat tube (2). A header plateless heat exchanger tank structure, wherein the flat tube (2) and the tank (4) are brazed and fixed in contact with the inner surface.
  5. 　請求項１~請求項４のいずれかのヘッダープレートレス熱交換器のタンク構造において、
    　側板部（７）と上端板部（５）および下端板部（６）との境で、それらのコア側先端部が分離されて、そこに欠切部（１５）が形成されたヘッダープレートレス熱交換器のタンク構造。     In the tank structure of the header plateless heat exchanger according to any one of claims 1 to 4,
    Header plateless in which the core side tip is separated at the boundary between the side plate (7), the upper end plate (5), and the lower end plate (6), and the notch (15) is formed there. Heat exchanger tank structure.
PCT/JP2014/074159 2013-09-13 2014-09-05 Tank structure for header-plate-less heat exchanger WO2015037688A1 (en)

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JP2015025649A (en) * 2013-06-21 2015-02-05 株式会社ティラド Heat exchanger
EP3441603A4 (en) * 2016-04-06 2019-11-13 Korens Co., Ltd. Gas tube for egr cooler
WO2021145224A1 (en) * 2020-01-17 2021-07-22 株式会社ティラド Heat exchanger
CN113825970A (en) * 2019-05-21 2021-12-21 阿法拉伐股份有限公司 Plate heat exchanger and method for manufacturing a plate heat exchanger

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WO2019131571A1 (en) * 2017-12-27 2019-07-04 株式会社ティラド Header plateless type heat exchanger
JP6991855B2 (en) * 2017-12-27 2022-01-13 株式会社ティラド Header plateless heat exchanger
JP7349821B2 (en) * 2019-06-10 2023-09-25 株式会社ティラド Heat exchanger

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EP3441603A4 (en) * 2016-04-06 2019-11-13 Korens Co., Ltd. Gas tube for egr cooler
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