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JP2015078823A - Header plateless heat exchanger - Google Patents

Header plateless heat exchanger Download PDF

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Publication number
JP2015078823A
JP2015078823A JP2013217824A JP2013217824A JP2015078823A JP 2015078823 A JP2015078823 A JP 2015078823A JP 2013217824 A JP2013217824 A JP 2013217824A JP 2013217824 A JP2013217824 A JP 2013217824A JP 2015078823 A JP2015078823 A JP 2015078823A
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Japan
Prior art keywords
plate
core
heat exchanger
side walls
tongue piece
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JP2013217824A
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Japanese (ja)
Inventor
中村　洋一
Yoichi Nakamura
洋一 中村
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T Rad Co Ltd
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T Rad Co Ltd
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Priority to JP2013217824A priority Critical patent/JP2015078823A/en
Priority to PCT/JP2014/078158 priority patent/WO2015056812A1/en
Publication of JP2015078823A publication Critical patent/JP2015078823A/en
Pending legal-status Critical Current

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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
    • F28D7/1684—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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing means
    • 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
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0084—Condensers
    • 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
    • F28F2009/0285—Other particular headers or end plates
    • F28F2009/029—Other particular headers or end plates with increasing or decreasing cross-section, e.g. having conical shape
    • 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

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

Abstract

【課題】 ヘッダプレートレス型熱交換器のコアとタンクとの接合部に隙間が生じることを防止すること。【解決手段】 偏平チューブ５を構成する溝形の第１プレート１および第２プレート２の各溝底1b、2bの幅方向両端部に、予め平面視、コ字状に欠切した舌片部９を形成する。そして、各プレート１、２を溝形に曲折することにより、舌片部９の端面9aを第１プレート１および第２プレート２の各側壁1a、2aの外面に面一に整合させる。【選択図】 図２PROBLEM TO BE SOLVED: To prevent a gap from occurring at a joint portion between a core and a tank of a header plateless heat exchanger. SOLUTION: Tongue pieces previously cut out in a U shape in plan view at both ends in the width direction of groove bottoms 1b and 2b of a groove-shaped first plate 1 and second plate 2 constituting a flat tube 5 9 is formed. Then, the plates 1 and 2 are bent into a groove shape so that the end surface 9a of the tongue piece 9 is flush with the outer surfaces of the side walls 1a and 2a of the first plate 1 and the second plate 2. [Selection] Figure 2

Description

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プレートレス型熱交換器に関し、より詳しくは、一対の溝型プレートを嵌着して偏平チューブを形成したものであって、その偏平チューブの角における気密性、液密性を改良したものに関する。   The present invention relates to a header plateless type heat exchanger formed by laminating flat tubes with both ends bulging, and more specifically, a flat tube is formed by fitting a pair of groove type plates, The present invention relates to an improved air tightness and liquid tightness at the corner of a flat tube.

ヘッダプレートレス型熱交換器は、図８および図９に示すごとく、両端が厚み方向に膨出した偏平チューブ５をその膨出部で積層することによりコアを形成し、ヘッダプレートを必要としないものである。そして、そのコア６の長手方向両端に一対のタンク８が被嵌され、コア６の外周にケーシング７が被嵌されるものである。
このコア６の構成要素である偏平チューブ５は、一対の溝型に形成された第１プレート１と第２プレート２との嵌着体からなる。 As shown in FIGS. 8 and 9, the header plateless heat exchanger forms a core by laminating the flat tubes 5 whose both ends swell in the thickness direction at the bulging portion, and does not require a header plate. Is. A pair of tanks 8 are fitted on both ends of the core 6 in the longitudinal direction, and a casing 7 is fitted on the outer periphery of the core 6.
The flat tube 5 that is a constituent element of the core 6 is formed by a fitting body of a first plate 1 and a second plate 2 formed in a pair of groove shapes.

特開２０１１−２１３３号公報JP 2011-2133 A 特開２０１１−２３２０２０号公報JP2011-23320A

このような熱交換器のコアとタンク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５は、上下一対の第１プレート１と第２プレート２との嵌着体からなり、図８に示す如く、各プレート１、２はそれぞれプレス成形により溝形に曲折される。そのため、溝形の溝底1b、2bと側壁1a、2aとのコーナはＲに形成される。
そして、複数の偏平チューブ５を積層すると共に、その外周にタンク８を被嵌すると、図９のＡの位置に三角形の隙間に生じる。すると、その隙間でろう付け中にろう切れが起こり、気密性、液密性を損なう場合がある。
そこで、本発明は一対の第１プレート１、第２プレート２の嵌着体からなる偏平チューブ５とタンク８との間に隙間の生じないものを提供することを課題とする。 It is necessary to join the core and tank of such a heat exchanger with no gap by brazing. However, the flat tube 5 comprises a fitting body of a pair of upper and lower first plates 1 and 2, and as shown in FIG. 8, each of the plates 1 and 2 is bent into a groove shape by press molding. Therefore, the corners of the groove-shaped groove bottoms 1b and 2b and the side walls 1a and 2a are formed in R.
When a plurality of flat tubes 5 are stacked and the tank 8 is fitted on the outer periphery thereof, a triangular gap is generated at a position A in FIG. Then, brazing may occur during brazing at the gap, and airtightness and liquid tightness may be impaired.
SUMMARY OF THE INVENTION An object of the present invention is to provide a flat tube 5 made of a fitting body of a pair of first plate 1 and second plate 2 and a tank 8 with no gap.

請求項１に記載の本発明は、それぞれ、プレス成形により溝底と対向する一対の側壁とで溝形に曲折形成された、第１プレート(1)と第２プレート(2)とを有し、それら各プレート(1)(2)は、その長手方向の両端部の側壁(1a)(2a)の高さが、中間部分より高く形成され、
第１プレート(1)と第２プレート(2)とがその側壁で互いに嵌着して、その長手方向両端部に高さ方向へ膨出部(4)を有する偏平チューブ(5)が形成され、
その膨出部(4)で、複数の偏平チューブ(5)を積層してコア(6)が形成され、
そのコア(6)の外周にケーシング(7)が被嵌され、コア(6)の両端にタンク(8) が配置され、各部品間がろう付けにより接合されてなるヘッダプレートレス型熱交換器において、
前記膨出部(4)の位置で且つ、第１プレート(1)および第２プレート(2)の溝底(1b)(2b)の幅方向の両端部に予め平面視、コ字状に欠切してそこに舌片部(9)を形成して、前記溝形に曲折することにより、その舌片部(9)の外面を第１プレート(1)および第２プレート(2)の各側壁(1a)(2a)の外面に面一に整合させたことを特徴とするヘッダプレートレス型熱交換器である。 The present invention according to claim 1 has a first plate (1) and a second plate (2), each of which is bent into a groove shape by a pair of side walls facing the groove bottom by press molding. The plates (1) and (2) are formed such that the height of the side walls (1a) and (2a) at both ends in the longitudinal direction is higher than that of the intermediate portion.
The first plate (1) and the second plate (2) are fitted to each other at the side walls, and a flat tube (5) having bulge portions (4) in the height direction is formed at both longitudinal ends thereof. ,
At the bulge portion (4), a plurality of flat tubes (5) are laminated to form a core (6),
A header plateless heat exchanger in which a casing (7) is fitted on the outer periphery of the core (6), tanks (8) are arranged at both ends of the core (6), and the parts are joined by brazing. In
At the position of the bulging portion (4) and at both ends in the width direction of the groove bottoms (1b) and (2b) of the first plate (1) and the second plate (2), it is missing in a plan view and in a U shape in advance. A tongue piece (9) is formed there and bent into the groove shape so that the outer surface of the tongue piece (9) is attached to each of the first plate (1) and the second plate (2). A header plateless heat exchanger characterized by being flush with the outer surfaces of the side walls (1a) and (2a).

請求項２に記載の発明は、それぞれ、プレス成形により溝底と対向する一対の側壁とで溝形に曲折形成された、第１プレート(1)と第２プレート(2)とを有し、それら各プレート(1)(2)は、その長手方向の両端部の側壁(1a)(2a)の高さが、中間部分より高く形成され、
第１プレート(1)と第２プレート (2)とがその側壁で互いに嵌着して、その長手方向両端部に高さ方向へ膨出部(4)を有する偏平チューブ(5)が形成され、
その膨出部(4)で、複数の偏平チューブ(5)を積層してコア(6)が形成され、
そのコア(6)の外周にケーシング(7)が被嵌され、コア(6)の両端にタンク(8) が配置され、各部品間がろう付けにより接合されてなるヘッダプレートレス型熱交換器において、
前記膨出部(4)の位置で且つ、第１プレート(1)および第２プレート(2)の各側壁(1a)(2a)の溝底側の端部に予め平面視、コ字状に欠切してそこに舌片部(9)を形成して、前記溝形に曲折することにより、その舌片部(9)の端面(9a)を第１プレート(1)および第２プレート(2)の各溝底(1b)(2b)の外面に面一に整合させたことを特徴とするヘッダプレートレス型熱交換器である。 The invention according to claim 2 has a first plate (1) and a second plate (2), each of which is formed into a groove shape by a pair of side walls facing the groove bottom by press molding, Each of these plates (1) and (2) is formed such that the height of the side walls (1a) and (2a) at both ends in the longitudinal direction is higher than the intermediate portion,
The first plate (1) and the second plate (2) are fitted to each other at the side walls, and a flat tube (5) having bulges (4) in the height direction is formed at both longitudinal ends thereof. ,
At the bulge portion (4), a plurality of flat tubes (5) are laminated to form a core (6),
A header plateless heat exchanger in which a casing (7) is fitted on the outer periphery of the core (6), tanks (8) are arranged at both ends of the core (6), and the parts are joined by brazing. In
At the position of the bulging portion (4) and in the groove bottom side end portions of the side walls (1a) and (2a) of the first plate (1) and the second plate (2), in plan view, in a U shape A tongue piece (9) is formed in the cutout and bent into the groove shape, whereby the end face (9a) of the tongue piece (9) is formed on the first plate (1) and the second plate ( 2) A header plateless heat exchanger characterized by being aligned flush with the outer surface of each groove bottom (1b) (2b).

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型熱交換器において、
前記第１プレート(1)の両側壁(1a)の高さ方向の端縁が、第２プレート(2)の板厚分、内側に段付きに曲折形成された段付き部(10)を有し、その段付き部(10)に第２プレート(2)の高さ方向の端縁が嵌着されたことを特徴とするヘッダプレートレス型熱交換器である。 According to a third aspect of the present invention, in the header plateless heat exchanger according to the first or second aspect,
The edge in the height direction of both side walls (1a) of the first plate (1) has a stepped portion (10) that is bent inwardly by a thickness corresponding to the thickness of the second plate (2). The header plateless heat exchanger is characterized in that the edge of the second plate (2) in the height direction is fitted to the stepped portion (10).

請求項１に記載の本発明は、各プレート１，２の溝底1b、2bの端部の舌片部９の端面9aが、第１プレート１および第２プレート２の側壁1a、2aの外面に面一に整合するので、その舌片部９の端面9aの位置で、各プレート１，２の外周が直角に形成される。そのため、一対の各プレート１，２の嵌着体からなる偏平チューブ５の外周も舌片部９の位置で直角に形成され、各偏平チューブ５の積層体で形成するコア６の外周も、舌片部９の位置で隙間なく形成される。
その結果、コア６の端部にタンク８が被嵌されて、一体にろう付けされると、タンク８と偏平チューブ５とは、隙間なく密着し、タンク８とコア６との気密・液密を保持することができる。即ち、図９のＡ部の隙間をなくすことができる。 According to the first aspect of the present invention, the end surfaces 9a of the tongue pieces 9 at the ends of the groove bottoms 1b and 2b of the plates 1 and 2 are the outer surfaces of the side walls 1a and 2a of the first plate 1 and the second plate 2, respectively. Therefore, the outer peripheries of the plates 1 and 2 are formed at right angles at the position of the end face 9a of the tongue piece 9. Therefore, the outer periphery of the flat tube 5 formed by the fitting body of the pair of plates 1 and 2 is also formed at a right angle at the position of the tongue piece 9, and the outer periphery of the core 6 formed by the laminated body of the flat tubes 5 is also the tongue. It is formed without a gap at the position of the piece 9.
As a result, when the tank 8 is fitted on the end of the core 6 and brazed together, the tank 8 and the flat tube 5 are in close contact with each other without any gap, and the tank 8 and the core 6 are hermetically and liquid tightly sealed. Can be held. That is, it is possible to eliminate the gap at the portion A in FIG.

請求項２に記載の発明は、各側壁1a、2aに舌片部９を形成して、その舌片部９の端面9aを第１プレート１および第２プレート２の各溝底1b、2bの外面に面一に整合させたから、その舌片部９の端面9aの位置で、各プレート１，２の外周が直角に形成される。そのため、一対の各プレート１，２の嵌着体からなる偏平チューブ５の外周も舌片部９の位置で直角に形成され、各偏平チューブ５の積層体で形成するコア６の外周も、舌片部９の位置で隙間なく形成される。
その結果、コア６の端部にタンク８が被嵌されて、一体にろう付けされると、タンク８と偏平チューブ５とは、隙間なく密着し、タンク８とコア６との気密・液密を保持することができる。即ち、図９のＡ部の隙間をなくすことができる。 According to the second aspect of the present invention, a tongue piece 9 is formed on each side wall 1a, 2a, and an end surface 9a of the tongue piece 9 is formed on each groove bottom 1b, 2b of the first plate 1 and the second plate 2. Since the outer surfaces are aligned flush with each other, the outer peripheries of the plates 1 and 2 are formed at right angles at the position of the end surface 9a of the tongue piece 9. Therefore, the outer periphery of the flat tube 5 formed by the fitting body of the pair of plates 1 and 2 is also formed at a right angle at the position of the tongue piece 9, and the outer periphery of the core 6 formed by the laminated body of the flat tubes 5 is also the tongue. It is formed without a gap at the position of the piece 9.
As a result, when the tank 8 is fitted on the end of the core 6 and brazed together, the tank 8 and the flat tube 5 are in close contact with each other without any gap, and the tank 8 and the core 6 are hermetically and liquid tightly sealed. Can be held. That is, it is possible to eliminate the gap at the portion A in FIG.

本発明のヘッダプレートレス型熱交換器の要部分解斜視図。The principal part disassembled perspective view of the header plateless type heat exchanger of this invention. 同熱交換器の偏平チューブ５の分解説明図（Ａ）と、要部斜視図（Ｂ）、同Ｃ−Ｃ断面図（Ｃ）。Exploded view (A) of the flat tube 5 of the heat exchanger, an essential part perspective view (B), and a CC sectional view (C). 同熱交換器の偏平チューブ５の積層体からなるコア６の要部斜視図。The principal part perspective view of the core 6 which consists of a laminated body of the flat tube 5 of the same heat exchanger. 同縦断面図。FIG. 図４のＶ−Ｖ矢視断面図。FIG. 5 is a cross-sectional view taken along line VV in FIG. 4. 舌片部９およびプレート１，２の成形手順を示す説明図。Explanatory drawing which shows the shaping | molding procedure of the tongue piece part 9 and the plates 1 and 2. FIG. 同熱交換器の第２実施例の偏平チューブ５の分解説明図（Ａ）と、要部斜視図（Ｂ）、同Ｃ−Ｃ断面図（Ｃ）。The exploded explanatory view (A) of the flat tube 5 of the 2nd Example of the heat exchanger, the principal part perspective view (B), and CC sectional drawing (C). 従来型ヘッダプレートレス型熱交換器の要部縦断面図。The principal part longitudinal cross-sectional view of the conventional header plateless type heat exchanger. 図７のIX−IX断面図。IX-IX sectional drawing of FIG.

（第１実施例）
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。
このヘッダプレートレス型熱交換器は、一例として、ＥＧＲクーラや凝縮器として用いられ、タンク８側に気体が導かれ、それが偏平チューブ５内を流通し、ケーシング７側に冷却水が導かれ、それが偏平チューブ５の外側に流通する。 (First embodiment)
Next, embodiments of the present invention will be described with reference to the drawings.
As an example, this header plateless heat exchanger is used as an EGR cooler or a condenser, in which gas is guided to the tank 8 side, which circulates in the flat tube 5, and cooling water is guided to the casing 7 side. , It circulates outside the flat tube 5.

この熱交換器は、図１に示す如く、両端が厚み方向に膨出した偏平チューブ５をその膨出部で積層することによりコアを形成し、ヘッダプレートを必要としないものである。そして、そのコア６の長手方向両端に一対のタンク８が被嵌され、そのタンク８の開口部を介してコア６の外周にケーシング７が被嵌されるものである。
このコア６の構成要素である偏平チューブ５は、一対の溝型に形成された第１プレート１と第２プレート２との嵌着体からなる。 As shown in FIG. 1, this heat exchanger forms a core by laminating flat tubes 5 whose both ends swell in the thickness direction at the swelled portion, and does not require a header plate. A pair of tanks 8 are fitted on both ends of the core 6 in the longitudinal direction, and a casing 7 is fitted on the outer periphery of the core 6 through the opening of the tank 8.
The flat tube 5 that is a constituent element of the core 6 is formed by a fitting body of a first plate 1 and a second plate 2 formed in a pair of groove shapes.

本発明は、そのコア６を構成する偏平チューブ５に特徴がある。この偏平チューブ５は、図２に示す如く、溝型に形成された上下一対の第１プレート１と第２プレート２との嵌着体からなる。その偏平チューブ５は、その長手方向両端部が厚み方向に膨出した膨出部４を有し、その偏平チューブ５が膨出部４の位置で多数積層され、コア６を構成する。
そして、コア６の長手方向両端にタンク８の開口が嵌着するとともに、その開口の外側で、コア６の外周にケーシング７が被嵌される。この例では、ケーシング７は断面コ字状に形成されたケーシング本体7aとその開口を閉塞する端蓋7bとからなり、全体が筒状に形成されてる。 The present invention is characterized by the flat tube 5 constituting the core 6. As shown in FIG. 2, the flat tube 5 includes a fitting body of a pair of upper and lower first plates 1 and 2 formed in a groove shape. The flat tube 5 has a bulging portion 4 whose both longitudinal end portions bulge in the thickness direction, and a large number of the flat tubes 5 are laminated at the position of the bulging portion 4 to constitute a core 6.
And while opening of the tank 8 is fitted to the longitudinal direction both ends of the core 6, the casing 7 is fitted by the outer periphery of the core 6 on the outer periphery of the opening. In this example, the casing 7 is composed of a casing body 7a having a U-shaped cross section and an end lid 7b that closes the opening thereof, and the entire casing 7 is formed in a cylindrical shape.

次に、偏平チューブ５は、第１プレート１の外側に第２プレート２が嵌着される。すなわち、図２に示す如く、第１プレート１の側壁1aの上縁部に第２プレート２の側壁2aの下縁部が嵌着される。この例では、第１プレート１の長手方向両端部の幅がそれ以外の幅よりも僅かに広く形成され、そこに段付き部10が形成されている。
そして、特に膨出部４の位置において、各プレート１，２の溝底1b、2bの幅方向の両端部に、舌片部９が平面コ字状に形成される。そして、その各舌片部９の端面9aと段付き部１０とが面一になるように、プレス成形されている。 Next, in the flat tube 5, the second plate 2 is fitted to the outside of the first plate 1. That is, as shown in FIG. 2, the lower edge portion of the side wall 2 a of the second plate 2 is fitted to the upper edge portion of the side wall 1 a of the first plate 1. In this example, the width of the longitudinal direction both ends of the first plate 1 is slightly wider than the other widths, and the stepped portion 10 is formed there.
And especially in the position of the bulging part 4, the tongue piece part 9 is formed in planar U shape in the both ends of the width direction of the groove bottom 1b of each plate 1 and 2b. And it press-molds so that the end surface 9a of each tongue piece part 9 and the stepped part 10 may become flush | level.

図６は、その舌片部９およびプレート１，２の成形手順を示す説明図である。まず、同図のように、各プレート１，２の溝底1b、2bの幅方向の両端部の位置に、舌片部９を平面コ字状に切り起こし形成する。次いで、仮想線Ｃの位置で折り曲げる。この仮想線Ｃは、溝底1b、2bと側壁1a、2aとの内面側の境より溝底側にその板厚分寄った位置になる。その折り曲げ加工の際、その舌片部９の端面9aが側壁1a、2aの外面に面一になるように整形する。このとき、図２（Ｃ）に示す如く、舌片部の先端は僅かに浮き上がり、側壁1a、2aとの間に隙間ｔが生じる。この隙間ｔは偏平チューブのコーナのＲ（図９のＡ）に比べて小さい。そのため、ろう付け時に閉塞される。
その結果、偏平チューブ５の外面にタンク８を当接したとき、各プレート１、２のコーナとタンク８との間に隙間が生じることがない。すなわち、図９における隙間Ａが消滅し、舌片部９の隙間ｔも消滅し、タンク８と偏平チューブ５との気密性および液密性を舌片部９の位置で確保できる。その状態を示したのが図２（Ｃ）、図３〜図５である。 FIG. 6 is an explanatory diagram showing a procedure for forming the tongue piece 9 and the plates 1 and 2. First, as shown in the figure, the tongue piece 9 is cut and raised in the shape of a plane U at the positions of both end portions in the width direction of the groove bottoms 1b and 2b of the plates 1 and 2, respectively. Next, it is bent at the position of the virtual line C. This imaginary line C is located at a position closer to the groove bottom side from the boundary on the inner surface side between the groove bottoms 1b, 2b and the side walls 1a, 2a. At the time of the bending process, the end surface 9a of the tongue piece 9 is shaped so as to be flush with the outer surfaces of the side walls 1a and 2a. At this time, as shown in FIG. 2C, the tip of the tongue piece part slightly floats, and a gap t is formed between the side walls 1a and 2a. This gap t is smaller than R (A in FIG. 9) at the corner of the flat tube. Therefore, it is blocked during brazing.
As a result, when the tank 8 is brought into contact with the outer surface of the flat tube 5, there is no gap between the corners of the plates 1 and 2 and the tank 8. That is, the gap A in FIG. 9 disappears, and the gap t between the tongue pieces 9 also disappears, and the airtightness and liquid tightness between the tank 8 and the flat tube 5 can be secured at the position of the tongue pieces 9. This state is shown in FIG. 2C and FIGS.

この偏平チューブ５内にはその膨出部４を除いて、内部にフィン14が介装され、各部品間が一体的にろう付け固定される。なお、図２（Ｃ）、図３から明らかなように、第１プレート１の側壁1aの上縁は斜めに傾斜し、第２プレート２の側壁2aを円滑に嵌着できるように形成している。また、第２プレート２の側壁2aには凹陥部15が形成され、第１プレート１の段付き部10との干渉を避けている。   In the flat tube 5, except for the bulging portion 4, fins 14 are inserted inside, and the parts are integrally brazed and fixed. 2C and 3, the upper edge of the side wall 1a of the first plate 1 is inclined so that the side wall 2a of the second plate 2 can be smoothly fitted. Yes. Further, a recessed portion 15 is formed in the side wall 2a of the second plate 2 to avoid interference with the stepped portion 10 of the first plate 1.

（第２実施例）
次に、第７図は本発明の第２実施例である。
この例は、舌片部９が各プレート１，２の側壁1a，2aに形成されたものである。
即ち、膨出部４の位置で且つ、第１プレート１および第２プレート２が平坦な状態で、各側壁11a，2aの溝底側の端部位置に、予め平面視、コ字状に欠切して、そこに舌片部９を形成しておく。次いで、各プレート１、２を溝形に曲折することにより、その舌片部９の端面9aを第１プレート１および第２プレート２の各溝底1b，2bの外面に面一に整合させたものである。 (Second embodiment)
FIG. 7 shows a second embodiment of the present invention.
In this example, the tongue piece 9 is formed on the side walls 1a and 2a of the plates 1 and 2, respectively.
That is, at the position of the bulging portion 4 and with the first plate 1 and the second plate 2 being flat, at the end position on the groove bottom side of each side wall 11a, 2a, it is previously lacked in a U shape in plan view. Cut the tongue piece 9 there. Next, the plates 1 and 2 are bent into a groove shape, so that the end surface 9a of the tongue piece 9 is flush with the outer surfaces of the groove bottoms 1b and 2b of the first plate 1 and the second plate 2. Is.

この場合にも、前記第１実施例同様に、一対の各プレート１，２の嵌着体からなる偏平チューブ５の外周も舌片部９の位置で直角に形成され、各偏平チューブ５の積層体で形成するコア６の外周も、舌片部９の位置で隙間なく形成される。
その結果、コア６の端部にタンク８が被嵌されて、一体にろう付けされると、タンク８と偏平チューブ５とは、隙間なく密着し、タンク８とコア６との気密・液密を保持することができる。即ち、図９のＡ部の隙間をなくすことができる。さらにこの例では、第１プレート１と第２プレート２との嵌着部においても、第１プレート１側に舌片部９を設け、第２プレート２側に、それに整合する台形の欠切部とを配置して、舌片部９の端面を欠切部に突き当てることにより、両プレート１，２間の嵌着部の隙間も無くしている。 Also in this case, as in the first embodiment, the outer periphery of the flat tube 5 formed by the fitting body of the pair of plates 1 and 2 is also formed at a right angle at the position of the tongue piece portion 9, and the flat tubes 5 are laminated. The outer periphery of the core 6 formed by the body is also formed without a gap at the position of the tongue piece 9.
As a result, when the tank 8 is fitted on the end of the core 6 and brazed together, the tank 8 and the flat tube 5 are in close contact with each other without any gap, and the tank 8 and the core 6 are hermetically and liquid tightly sealed. Can be held. That is, it is possible to eliminate the gap at the portion A in FIG. Furthermore, in this example, also in the fitting portion between the first plate 1 and the second plate 2, a tongue piece portion 9 is provided on the first plate 1 side, and a trapezoidal notch portion that is aligned therewith on the second plate 2 side. And the end face of the tongue piece 9 is abutted against the notch, thereby eliminating the gap between the fitting portions between the plates 1 and 2.

１ 第１プレート
1a 側壁
1b 溝底
２ 第２プレート
2a 側壁
2b 溝底
４ 膨出部
５ 偏平チューブ
６ コア 1 First plate
1a Side wall
1b Groove bottom 2 Second plate
2a Side wall
2b groove bottom 4 bulge 5 flat tube 6 core

７ ケーシング
7a ケーシング本体
7b 端蓋
８ タンク
９ 舌片部
9a 端面
10 段付き部
11 欠切部
12 冷却水出入口
13 気体出入口
14 フィン
15 凹陥部 7 Casing
7a Casing body
7b End cover 8 Tank 9 Tongue piece
9a End face
10 Stepped part
11 Notch
12 Cooling water inlet / outlet
13 Gas inlet / outlet
14 fins
15 depression

Claims (3)

それぞれ、プレス成形により溝底と対向する一対の側壁とで溝形に曲折形成された、第１プレート(1)と第２プレート(2)とを有し、それら各プレート(1)(2)は、その長手方向の両端部の側壁(1a)(2a)の高さが、中間部分より高く形成され、
第１プレート(1)と第２プレート (2)とがその側壁で互いに嵌着して、その長手方向両端部に高さ方向へ膨出部(4)を有する偏平チューブ(5)が形成され、
その膨出部(4)で、複数の偏平チューブ(5)を積層してコア(6)が形成され、
そのコア(6)の外周にケーシング(7)が被嵌され、コア(6)の両端にタンク(8) が配置され、各部品間がろう付により接合されてなるヘッダプレートレス型熱交換器において、
前記膨出部(4)の位置で且つ、第１プレート(1)および第２プレート(2)の各溝底(1b)(2b)の幅方向の両端部に予め平面視、コ字状に欠切してそこに舌片部(9)を形成して、前記溝形に曲折することにより、その舌片部(9)の端面(9a)を第１プレート(1)および第２プレート(2)の各側壁(1a)(2a)の外面に面一に整合させたことを特徴とするヘッダプレートレス型熱交換器。 Each has a first plate (1) and a second plate (2) bent into a groove shape by a pair of side walls facing the groove bottom by press molding, and each of these plates (1) (2) Is formed such that the height of the side walls (1a) and (2a) at both ends in the longitudinal direction is higher than the middle part,
The first plate (1) and the second plate (2) are fitted to each other at the side walls, and a flat tube (5) having bulges (4) in the height direction is formed at both longitudinal ends thereof. ,
At the bulge portion (4), a plurality of flat tubes (5) are laminated to form a core (6),
A header plateless heat exchanger in which a casing (7) is fitted on the outer periphery of the core (6), tanks (8) are disposed at both ends of the core (6), and the parts are joined by brazing. In
At the position of the bulging portion (4) and in the width direction ends of the groove bottoms (1b) and (2b) of the first plate (1) and the second plate (2), in plan view, in a U shape in advance. A tongue piece (9) is formed in the cutout and bent into the groove shape, whereby the end face (9a) of the tongue piece (9) is formed on the first plate (1) and the second plate ( A header plateless heat exchanger characterized by being flush with the outer surface of each side wall (1a) (2a) of 2). それぞれ、プレス成形により溝底と対向する一対の側壁とで溝形に曲折形成された、第１プレート(1)と第２プレート(2)とを有し、それら各プレート(1)(2)は、その長手方向の両端部の側壁(1a)(2a)の高さが、中間部分より高く形成され、
第１プレート(1)と第２プレート (2)とがその側壁で互いに嵌着して、その長手方向両端部に高さ方向へ膨出部(4)を有する偏平チューブ(5)が形成され、
その膨出部(4)で、複数の偏平チューブ(5)を積層してコア(6)が形成され、
そのコア(6)の外周にケーシング(7)が被嵌され、コア(6)の両端にタンク(8) が配置され、各部品間がろう付により接合されてなるヘッダプレートレス型熱交換器において、
前記膨出部(4)の位置で且つ、第１プレート(1)および第２プレート(2)の各側壁(1a)(2a)の溝底側の端部に予め平面視、コ字状に欠切してそこに舌片部(9)を形成して、前記溝形に曲折することにより、その舌片部(9)の端面(9a)を第１プレート(1)および第２プレート(2)の各溝底(1b)(2b)の外面に面一に整合させたことを特徴とするヘッダプレートレス型熱交換器。 Each has a first plate (1) and a second plate (2) bent into a groove shape by a pair of side walls facing the groove bottom by press molding, and each of these plates (1) (2) Is formed such that the height of the side walls (1a) and (2a) at both ends in the longitudinal direction is higher than the middle part,
The first plate (1) and the second plate (2) are fitted to each other at the side walls, and a flat tube (5) having bulges (4) in the height direction is formed at both longitudinal ends thereof. ,
At the bulge portion (4), a plurality of flat tubes (5) are laminated to form a core (6),
A header plateless heat exchanger in which a casing (7) is fitted on the outer periphery of the core (6), tanks (8) are disposed at both ends of the core (6), and the parts are joined by brazing. In
At the position of the bulging portion (4) and in the groove bottom side end portions of the side walls (1a) and (2a) of the first plate (1) and the second plate (2), in plan view, in a U shape A tongue piece (9) is formed in the cutout and bent into the groove shape, whereby the end face (9a) of the tongue piece (9) is formed on the first plate (1) and the second plate ( A header plateless heat exchanger characterized by being flush with the outer surface of each groove bottom (1b) (2b) in 2). 請求項１または請求項２に記載のヘッダプレートレス型熱交換器において、
前記第１プレート(1)の両側壁(1a)の高さ方向の端縁が、第２プレート(2)の板厚分、内側に段付きに曲折形成された段付き部(10)を有し、その段付き部(10)に第２プレート(2)の高さ方向の端縁が嵌着されたことを特徴とするヘッダプレートレス型熱交換器。 In the header plateless heat exchanger according to claim 1 or 2,
The edge in the height direction of both side walls (1a) of the first plate (1) has a stepped portion (10) that is bent inwardly by a thickness corresponding to the thickness of the second plate (2). The header plateless heat exchanger is characterized in that an edge in the height direction of the second plate (2) is fitted to the stepped portion (10).
JP2013217824A 2013-10-18 2013-10-18 Header plateless heat exchanger Pending JP2015078823A (en)

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