JP2008309378A - Heat exchanger - Google Patents

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JP2008309378A
JP2008309378A JP2007156585A JP2007156585A JP2008309378A JP 2008309378 A JP2008309378 A JP 2008309378A JP 2007156585 A JP2007156585 A JP 2007156585A JP 2007156585 A JP2007156585 A JP 2007156585A JP 2008309378 A JP2008309378 A JP 2008309378A
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plate
sacrificial
flange
rising
outer peripheral
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JP4928358B2 (en
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Katsuhiro Isoda
勝弘 磯田
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Mahle Filter Systems Japan Corp
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Mahle Filter Systems Japan Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem found when a sacrificial material 26 is exposed, that preferential corrosion caused by electric corrosion may be generated depending on circumferential environment, and the corrosion may be expanded to a water channel 14 side. <P>SOLUTION: Outer sacrificial plates 12A and inner sacrificial plates 12B are alternately stacked, rising flanges 24A, 24B obliquely rising from a bottom wall 29 of each plate to an outer peripheral side are superposed and brazed in the stacking direction, and flat oil channels 13 and water channels 14 are alternately formed among the plates. A flange height 30B of the inner sacrificial plate 12B provided with the sacrificial material 25 at a flange inner side of a core material 27 is increased to cover an outer peripheral face of the rising flange 24A of the outer sacrificial plate 12A provided with the sacrificial material 26 at a flange outer side of the core material 27. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、多数のプレートを積層してなるプレート積層型の熱交換器の改良に関する。   The present invention relates to an improvement in a plate-stacked heat exchanger in which a large number of plates are stacked.

特許文献１にも記載されているように、車両のオイルクーラには、多数のプレートを積層してなるプレート積層型の熱交換器が好適に用いられる。この熱交換器は、多数の薄板状のプレートを内部フィンとともに積層し、各プレートの内周側と外周側の立上フランジを重合・ロウ付けしてなり、プレート間に２つの流体路、例えばオイルが通流する油路と冷却水が通流する水路とが交互に形成される。   As described in Patent Document 1, a plate stack type heat exchanger in which a large number of plates are stacked is suitably used for an oil cooler of a vehicle. This heat exchanger is formed by laminating a large number of thin plates with internal fins, and superposing and brazing the rising flanges on the inner peripheral side and the outer peripheral side of each plate. Oil passages through which oil flows and water passages through which cooling water flows are alternately formed.

また、上記の特許文献１では、冷却水の水路側の耐食性を向上するように、各プレートを、芯材の水路側に犠牲材が層状に設けられ、かつ、その両側にロウ材が層状に設けられたアルミニウム合金のクラッド材としている。つまり、図６及び図７の参考例に示すように、芯材２７に対して犠牲材２６がフランジ外周側に設けられる外側犠牲プレート１２Ａと、芯材２７に対して犠牲材２６がフランジ内周側に設けられる内側犠牲プレート１２Ｂと、を交互に積層させている。
特開平１０−１８５４６２号公報 Moreover, in said patent document 1, in order to improve the corrosion resistance of the water channel side of cooling water, each plate is provided with a sacrificial material layered on the water channel side of the core material, and the brazing material is layered on both sides thereof. The clad material is an aluminum alloy provided. That is, as shown in the reference examples of FIGS. 6 and 7, the outer sacrificial plate 12 </ b> A in which the sacrificial material 26 is provided on the outer periphery side of the flange with respect to the core material 27, and the sacrificial material 26 with respect to the core material 27. The inner sacrificial plates 12B provided on the side are alternately stacked.
JP-A-10-185462

上記の参考例では、外側犠牲プレート１２Ａと内側犠牲プレート１２Ｂとは、芯材２７に対して異なる側面にそれぞれ犠牲材２６が設けられているものの、その外殻形状は実質的に同じものであり、外周側の立上フランジ２４Ａ，２４Ｂの高さは同一となっている。このために、ロウ付けの際にロウ材が溶融すると、両プレート１２Ａ，１２Ｂの接合部等には部分的にロウ材のフィレット３１が形成されるものの、外側犠牲プレート１２Ａでは立上フランジ２４Ａの外周面に犠牲材２６の一部が露出することとなる。このために、海水が飛散するような腐食の生じ易い周囲環境によっては、図７に示すように犠牲材２６が露出している部分３２で電食による優先的な腐食が発生し、この腐食が犠牲材２６に沿って水路１４側へ進行するおそれがある。   In the above reference example, the outer sacrificial plate 12A and the inner sacrificial plate 12B are provided with the sacrificial material 26 on different side surfaces with respect to the core material 27, but the outer shell shapes thereof are substantially the same. The heights of the rising flanges 24A and 24B on the outer peripheral side are the same. For this reason, when the brazing material is melted during brazing, a filler fillet 31 of the brazing material is partially formed at the joint between the plates 12A and 12B, but the outer sacrificial plate 12A has the rising flange 24A. A part of the sacrificial material 26 is exposed on the outer peripheral surface. For this reason, depending on the surrounding environment in which seawater is likely to be corroded, preferential corrosion due to electrolytic corrosion occurs in the portion 32 where the sacrificial material 26 is exposed as shown in FIG. There is a risk of proceeding to the water channel 14 along the sacrificial material 26.

本発明は、このような課題に鑑みてなされたものである。すなわち、本発明は、交互に積層される外側犠牲プレートと内側犠牲プレートとを有し、各プレートの底壁から外周側へ斜めに立ち上がる立上フランジを積層方向に重合，ロウ付けし、上記プレート間に扁平な第１流体路と第２流体路とを交互に形成してなるプレート積層型の熱交換器において、各プレートの芯材上に層状に設けられる犠牲材が、外側犠牲プレートでは芯材に対してフランジ外周側に設けられる一方、内側犠牲プレートでは芯材に対してフランジ内周側に設けられている。そして、上記内側犠牲プレートは、少なくとも外側犠牲プレートの立上フランジの外周面を覆うように、外側犠牲プレートよりもフランジ高さが高く設定されている。   The present invention has been made in view of such problems. That is, the present invention has an outer sacrificial plate and an inner sacrificial plate that are alternately stacked, and a rising flange that rises obliquely from the bottom wall of each plate to the outer peripheral side is superposed and brazed in the stacking direction. In a plate stack type heat exchanger in which flat first fluid paths and second fluid paths are alternately formed between the sacrificial materials provided in layers on the core material of each plate, the outer sacrificial plate has a core. The inner sacrificial plate is provided on the flange inner peripheral side with respect to the core material while being provided on the flange outer peripheral side with respect to the material. The inner sacrificial plate has a flange height higher than that of the outer sacrificial plate so as to cover at least the outer peripheral surface of the rising flange of the outer sacrificial plate.

本発明によれば、犠牲材により水路等の一つの流体路内の腐食を防止しつつ、犠牲材が外部に露出する部分からの腐食の進行を回避し、耐久性，信頼性に優れた熱交換器を提供することができる。   According to the present invention, the sacrificial material prevents corrosion in one fluid channel such as a water channel, while avoiding the progress of corrosion from the portion where the sacrificial material is exposed to the outside, and has excellent durability and reliability. An exchanger can be provided.

以下、添付図面を参照して本発明の好ましい実施の形態を説明する。図３及び図４は、本発明に係るプレート積層型の熱交換器としてのハウジングレス型のオイルクーラ１０の一例を示す断面図及び上面図を示している。このオイルクーラ１０は、複数のコアプレート１２が積層方向に積層され、隣り合うプレート間に、エンジンオイルが通流する油路（第１流体路）１３と、エンジンの冷却水が通流する水路（第２流体路）１４と、が積層方向で交互に形成されたコア部１１と、このコア部１１の底面に固定され、上記コアプレート１２よりも厚肉なベースプレート１５と、コア部１１の上面に取り付けられるアッパプレート１６と、を有している。   Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. 3 and 4 show a cross-sectional view and a top view showing an example of a housingless type oil cooler 10 as a plate stack type heat exchanger according to the present invention. The oil cooler 10 includes a plurality of core plates 12 stacked in the stacking direction, an oil passage (first fluid passage) 13 through which engine oil flows between adjacent plates, and a water passage through which engine cooling water flows. (Second fluid path) 14 and core portions 11 alternately formed in the stacking direction, a base plate 15 fixed to the bottom surface of the core portion 11 and thicker than the core plate 12, and the core portions 11 And an upper plate 16 attached to the upper surface.

コアプレート１２を含めた各部品の表面にはロウ（鑞）材の層が形成されており、製造の際には、各部品を仮組した状態で高温の炉内でロウ付けを行うことによって、油路１３内に介装される内部フィン１９を含めて各部品が一体にロウ付け接合される。ベースプレート１５にはコア部１１よりも側方へ張り出した取付フランジ部１７が設けられ、この取付フランジ部１７には複数のボルト孔１７Ａが貫通形成されている。これらのボルト孔１７Ａを挿通する固定ボルト（図示省略）によって、このオイルクーラ１０のベースプレート１５がエンジン側の例えばシリンダブロック１８へ共締め固定される。   A layer of brazing material is formed on the surface of each component including the core plate 12, and during manufacturing, brazing is performed in a high-temperature furnace with each component temporarily assembled. The parts including the internal fins 19 interposed in the oil passage 13 are brazed and joined together. The base plate 15 is provided with a mounting flange portion 17 projecting laterally from the core portion 11, and a plurality of bolt holes 17 </ b> A are formed through the mounting flange portion 17. The base plate 15 of the oil cooler 10 is fastened and fixed to, for example, the cylinder block 18 on the engine side by fixing bolts (not shown) that pass through these bolt holes 17A.

各プレート１２の内・外周側には傾斜しつつ斜めに立ち上がる立上フランジ２３，２４が屈曲形成され、これらの立上フランジ２３，２４が隙間無く重合することによりコア部１１の内・外周壁部が形成されている。このように、このオイルクーラ１０は、油路１３と水路１４を区画形成するコアプレート１２がコア部１１の内・外周壁部を形成するハウジングとしても機能する、いわゆるハウジングレス式でプレート積層型の構造となっている。   On the inner and outer peripheral sides of each plate 12, rising flanges 23 and 24 that are inclined and tilted are bent and formed, and these rising flanges 23 and 24 are overlapped without any gaps so that inner and outer peripheral walls of the core portion 11 are formed. The part is formed. As described above, the oil cooler 10 is a so-called housingless type plate laminated type in which the core plate 12 that defines the oil passage 13 and the water passage 14 also functions as a housing that forms the inner and outer peripheral wall portions of the core portion 11. It has a structure.

コア部１１には、内部を積層方向に貫通して各油路１３に連通する２本の油縦通路２０が設けられ、これらの油縦通路２０を通してエンジンオイルが油路１３内へ送給され、油路１３内を通流するように構成されている。また、コア部１１には、内部を積層方向に貫通して各水路１４に連通する２本の水縦通路２２が設けられ、これらの水縦通路２２を通して冷却水が水路１４を通流するように構成されている。これらのエンジンオイルや冷却水は、例えばシリンダブロック１８の所定位置に形成された穴（図示省略）を介して、このオイルクーラ１０へ供給されるとともに、シリンダブロック１８へ戻されるようになっている。   The core portion 11 is provided with two oil longitudinal passages 20 that penetrate the inside in the stacking direction and communicate with the respective oil passages 13, and engine oil is fed into the oil passages 13 through these oil longitudinal passages 20. The oil passage 13 is configured to flow. Further, the core portion 11 is provided with two water longitudinal passages 22 penetrating the inside in the laminating direction and communicating with the respective water passages 14 so that the cooling water flows through the water passages 14 through these water longitudinal passages 22. It is configured. These engine oil and cooling water are supplied to the oil cooler 10 and returned to the cylinder block 18 through holes (not shown) formed at predetermined positions of the cylinder block 18, for example. .

図１は、本発明の第１実施例に係るオイルクーラ１０のコア部１１における外周近傍の要部断面図である。コアプレート１２は、交互に積層される外側犠牲プレート１２Ａと内側犠牲プレート１２Ｂと、の２種類のプレートで構成されている。図２に示すように、ロウ付け前の状態では、両プレート１２Ａ，１２Ｂともに、ロウ材２５，犠牲材２６，芯材２７及びロウ材２８が積層された４層構造のアルミニウム合金のクラッド材から構成され、プレス成形等により適宜な凹凸が与えられている。ロウ材は、クラッド材に限らず、例えばロウ材（箔，ペースト状等）を別途用意して両プレート１２Ａ，１２Ｂに塗布，添着しても良い。ここで、犠牲材２６が芯材２７よりも水路１４の側に配置されるように、外側犠牲プレート１２Ａでは、芯材２７に対して外周側の立上フランジ２４のフランジ外周側（図１の左側）に犠牲材２６が設けられる一方、内側犠牲プレート１２Ｂでは、芯材２７に対してフランジ内周側（図１の右側）に犠牲材２６が設けられる。このため、上述したように、仮に図６及び図７に示す参考例のように内側犠牲プレート１２Ｂと外側犠牲プレート１２Ａとを実質的に同一形状とし、両プレート１２Ａ，１２Ｂのフランジ高さ（プレート底壁２９の上面から立上フランジ２４の上端までの高さ）３０Ａ，３０Ｂを等しくした場合、外側犠牲プレート１２Ａの立上フランジ２４Ａの外周面に犠牲材２６の一部が露出し、周囲環境によっては、図７に示すように犠牲材２６が露出している部分３２で電食による優先的な腐食が発生し、この腐食が犠牲材２６に沿って水路１４側へ進行するおそれがある。   FIG. 1 is a cross-sectional view of a main part near the outer periphery of a core part 11 of an oil cooler 10 according to a first embodiment of the present invention. The core plate 12 includes two types of plates, an outer sacrificial plate 12A and an inner sacrificial plate 12B, which are alternately stacked. As shown in FIG. 2, in the state before brazing, both the plates 12A and 12B are made of a clad material of an aluminum alloy having a four-layer structure in which a brazing material 25, a sacrificial material 26, a core material 27, and a brazing material 28 are laminated. It is configured and given appropriate irregularities by press molding or the like. The brazing material is not limited to the clad material, and for example, a brazing material (foil, paste, etc.) may be separately prepared and applied to and attached to both plates 12A and 12B. Here, in the outer sacrificial plate 12A, the outer peripheral side of the rising flange 24 on the outer peripheral side with respect to the core material 27 (see FIG. 1) so that the sacrificial material 26 is disposed closer to the water channel 14 than the core material 27. While the sacrificial material 26 is provided on the left side, the sacrificial material 26 is provided on the inner peripheral side of the flange (on the right side in FIG. 1) with respect to the core material 27 in the inner sacrificial plate 12B. Therefore, as described above, the inner sacrificial plate 12B and the outer sacrificial plate 12A have substantially the same shape as in the reference example shown in FIGS. 6 and 7, and the flange heights (plates) of both the plates 12A and 12B are set. When the heights 30A and 30B (the height from the upper surface of the bottom wall 29 to the upper end of the rising flange 24) are equal, a part of the sacrificial material 26 is exposed on the outer peripheral surface of the rising flange 24A of the outer sacrificial plate 12A. In some cases, as shown in FIG. 7, preferential corrosion due to electrolytic corrosion occurs in the portion 32 where the sacrificial material 26 is exposed, and this corrosion may progress along the sacrificial material 26 toward the water channel 14.

そこで本実施例では、図１に示すように、犠牲材２６が外部へ露出することのないように、内側犠牲プレート１２Ｂの立上フランジ２４Ｂにより外側犠牲プレート１２Ａの立上フランジ２４Ａの外周面を覆うように構成した。すなわち、内側犠牲プレート１２Ｂのフランジ高さ３０Ｂを、外側犠牲プレート１２Ａのフランジ高さ３０Ａよりも高く設定している。特に、この第１実施例では、犠牲材２６が確実に露出することのないように、内側犠牲プレート１２Ｂの立上フランジ２４Ｂを、プレート底壁２９より外周側へ傾斜しつつ立ち上がるテーパ部３３と、このテーパ部３３の先端からフランジ内周側へ折曲して、プレート底壁２９に対して略垂直に立ち上がり、他の内側犠牲プレート１２Ｂの外周面にロウ付けされる延長部３４と、を有する構成としている。つまり、内側犠牲プレート１２Ｂのフランジ高さ３０Ｂは、組付状態での延長部３４の先端が一つ上の内側犠牲プレート１２Ｂの外周面に接触する寸法、あるいはロウ付け時にロウ材層の分の沈み込みを考慮してロウ付け後に接触する寸法に設定されている。   Therefore, in the present embodiment, as shown in FIG. 1, the outer peripheral surface of the rising flange 24A of the outer sacrificial plate 12A is set by the rising flange 24B of the inner sacrificial plate 12B so that the sacrificial material 26 is not exposed to the outside. It was configured to cover. That is, the flange height 30B of the inner sacrificial plate 12B is set higher than the flange height 30A of the outer sacrificial plate 12A. In particular, in the first embodiment, the rising flange 24B of the inner sacrificial plate 12B is raised from the plate bottom wall 29 while being inclined toward the outer peripheral side so that the sacrificial material 26 is not exposed reliably. The extension portion 34 is bent from the tip of the taper portion 33 toward the flange inner peripheral side, rises substantially perpendicular to the plate bottom wall 29, and is brazed to the outer peripheral surface of the other inner sacrificial plate 12B. It has the composition to have. That is, the flange height 30B of the inner sacrificial plate 12B is such that the tip of the extension 34 in the assembled state is in contact with the outer peripheral surface of the upper inner sacrificial plate 12B, or the amount of the brazing material layer at the time of brazing. In consideration of the sinking, it is set to a dimension that contacts after brazing.

また、延長部３４と隣り合う内側犠牲プレート１２Ｂのテーパ部３３及び外側犠牲プレート１２Ａの立上フランジ２４Ａとで形成される断面三角形状のロウ溜まり内はロウ材で満たされている。これによって、上記延長部３４，テーパ部３３及び立上フランジ２４Ａのロウ付け部の強度が増し、ひいてはコア部１１の機械的強度を増加・確保することができる。   In addition, the inside of the solder reservoir having a triangular cross section formed by the tapered portion 33 of the inner sacrificial plate 12B adjacent to the extension 34 and the rising flange 24A of the outer sacrificial plate 12A is filled with brazing material. Thereby, the strength of the brazing portion of the extension portion 34, the taper portion 33 and the rising flange 24A is increased, and as a result, the mechanical strength of the core portion 11 can be increased and secured.

このような本実施例によれば、図１に示すように、外側犠牲プレート１２Ａの外周側の立上フランジ２４Ａが内側犠牲プレート１２Ｂの立上フランジ２４Ｂにより完全に覆い隠される形となり、ロウ付け後の製品外面に犠牲材２６が露出することがない。従って、周囲環境が悪化したとしても、上述した電食による犠牲材の優先的な腐食の発生・進行を確実に回避することができ、耐食性、ひいては信頼性・耐久性が向上し、かつ、コア部１１の外周壁部の強度・剛性も向上する。   According to this embodiment, as shown in FIG. 1, the rising flange 24A on the outer peripheral side of the outer sacrificial plate 12A is completely covered by the rising flange 24B of the inner sacrificial plate 12B, and brazing is performed. The sacrificial material 26 is not exposed to the outer surface of the subsequent product. Therefore, even if the surrounding environment deteriorates, it is possible to surely avoid the occurrence and progression of the preferential corrosion of the sacrificial material due to the above-mentioned electric corrosion, improve the corrosion resistance, and hence the reliability and durability, and the core. The strength and rigidity of the outer peripheral wall portion of the portion 11 are also improved.

また、交互に積み重ねられるプレートの組付作業性を考慮して、内側犠牲プレート１２Ｂの延長部３４の内径寸法３５Ｂは、外側犠牲プレート１２Ａのフランジ先端部の最外径寸法３５Ａよりも大きく設定されている。従って、組付時には両者間に適宜な隙間が確保されるようになっており、組付作業性にも優れている。   In consideration of the workability of assembling alternately stacked plates, the inner diameter dimension 35B of the extension 34 of the inner sacrificial plate 12B is set larger than the outermost diameter dimension 35A of the flange tip of the outer sacrificial plate 12A. ing. Therefore, an appropriate gap is secured between the two during assembly, and the assembly workability is excellent.

図５は本発明の第２実施例を示している。この第２実施例においては、内側犠牲プレート１２Ｂの立上フランジ２４Ｂは、プレート底壁２９より斜めに立ち上がるテーパ部３３のみとされ、第１実施例の延長部（３４）が省略された簡素な構造となっている。そして、内側犠牲プレート１２Ｂは、少なくとも外側犠牲プレート１２Ａの立上フランジ２４Ａの外周面を覆うように、外側犠牲プレート１２Ａよりもフランジ高さが高く設定されている。より具体的には、外側犠牲プレート１２Ａの立上フランジ２４Ａの外周面に過不足なく重合するように、内側犠牲プレート１２Ｂの立上フランジ２４Ｂは、図６の参考例に比して外側犠牲プレート１２Ａのフランジ露出分αだけ長い寸法に設定されている。   FIG. 5 shows a second embodiment of the present invention. In the second embodiment, the rising flange 24B of the inner sacrificial plate 12B is only a tapered portion 33 that rises obliquely from the plate bottom wall 29, and the extension portion (34) of the first embodiment is omitted. It has a structure. The inner sacrificial plate 12B has a flange height higher than that of the outer sacrificial plate 12A so as to cover at least the outer peripheral surface of the rising flange 24A of the outer sacrificial plate 12A. More specifically, the rising flange 24B of the inner sacrificial plate 12B has a larger outer sacrificial plate than the reference example of FIG. 6 so that the outer sacrificial plate 24B overlaps with the outer peripheral surface of the rising flange 24A. The dimension is set to be longer by a flange exposure amount α of 12A.

このような第２実施例によれば、第１実施例と同様、ロウ付け後の製品外面に犠牲材２６が露出することがなく、従って、耐食性、ひいては信頼性・耐久性を向上することに加え、第１実施例に比して内側犠牲プレート１２Ｂの立上フランジ２４Ｂが延長部（３４）のない簡素な構造となっており、軽量化や低コスト化を図ることができる。   According to the second embodiment, like the first embodiment, the sacrificial material 26 is not exposed to the outer surface of the product after brazing, and therefore, the corrosion resistance, and hence the reliability and durability are improved. In addition, as compared with the first embodiment, the rising flange 24B of the inner sacrificial plate 12B has a simple structure without the extension portion (34), so that weight reduction and cost reduction can be achieved.

以上のように本発明を具体的な実施例に基づいて説明してきたが、本発明は上記実施例に限定されるものではなく、その趣旨を逸脱しない範囲で、種々の変形・変更を含むものである。例えば上記の冷却水に代えてＬＬＣ（Ｌｏｎｇ Ｌｉｆｅ Ｃｏｏｌａｎｔ）等の不凍液を用いても良い。   As described above, the present invention has been described based on the specific embodiments. However, the present invention is not limited to the above-described embodiments, and includes various modifications and changes without departing from the spirit of the present invention. . For example, an antifreeze such as LLC (Long Life Coolant) may be used instead of the cooling water.

本発明の第１実施例に係るオイルクーラを示す要部断面図。1 is a cross-sectional view of a main part showing an oil cooler according to a first embodiment of the present invention. コアプレートの積層構造を示す説明図。Explanatory drawing which shows the laminated structure of a core plate. 本発明に係るオイルクーラの一例を示す断面図。Sectional drawing which shows an example of the oil cooler which concerns on this invention. 図３のオイルクーラの上面図。The top view of the oil cooler of FIG. 本発明の第２実施例に係るオイルクーラを示す要部断面図。The principal part sectional drawing which shows the oil cooler which concerns on 2nd Example of this invention. 参考例に係るオイルクーラを示す要部断面図。The principal part sectional drawing which shows the oil cooler which concerns on a reference example. 上記参考例に係る優先的な腐食の進行を示す説明図。Explanatory drawing which shows progress of preferential corrosion which concerns on the said reference example.

符号の説明Explanation of symbols

１０…オイルクーラ（熱交換器）
１１…コア部
１２Ａ…外側犠牲プレート
１２Ｂ…内側犠牲プレート
１３…油路（第１流体路）
１４…水路（第２流体路）
２４Ａ，２４Ｂ…立上フランジ
２５，２８…ロウ材
２６…犠牲材
２７…芯材 10 ... Oil cooler (heat exchanger)
11 ... Core portion 12A ... Outer sacrificial plate 12B ... Inner sacrificial plate 13 ... Oil passage (first fluid passage)
14 ... Water channel (second fluid channel)
24A, 24B ... Rising flanges 25, 28 ... Brazing material 26 ... Sacrificial material 27 ... Core material

Claims (2)

交互に積層される外側犠牲プレートと内側犠牲プレートとを有し、各プレートの底壁から外周側へ斜めに立ち上がる立上フランジを積層方向に重合，ロウ付けし、上記プレート間に扁平な第１流体路と第２流体路とを交互に形成してなるプレート積層型の熱交換器において、
各プレートの芯材上に層状に設けられる犠牲材が、外側犠牲プレートでは芯材に対してフランジ外周側に設けられる一方、内側犠牲プレートでは芯材に対してフランジ内周側に設けられ、
かつ、上記内側犠牲プレートは、少なくとも外側犠牲プレートの立上フランジの外周面を覆うように、外側犠牲プレートよりもフランジ高さが高く設定されていることを特徴とする熱交換器。 An outer sacrificial plate and an inner sacrificial plate that are alternately stacked, and a rising flange that rises obliquely from the bottom wall of each plate toward the outer periphery is superposed and brazed in the stacking direction. In a plate stack type heat exchanger formed by alternately forming fluid paths and second fluid paths,
The sacrificial material provided in layers on the core material of each plate is provided on the outer peripheral side of the flange with respect to the core material on the outer sacrificial plate, while provided on the inner peripheral side of the flange with respect to the core material on the inner sacrificial plate.
The heat exchanger according to claim 1, wherein the inner sacrificial plate has a flange height higher than that of the outer sacrificial plate so as to cover at least the outer peripheral surface of the rising flange of the outer sacrificial plate. 上記外側犠牲プレートの立上フランジが、上記底壁より外周側へ斜めに立ち上がるテーパ部と、このテーパ部の先端からフランジ内周側へ折曲して、他の外側犠牲プレートの外周面にロウ付けされる延長部と、を有することを特徴とする請求項１に記載の熱交換器。   The rising flange of the outer sacrificial plate rises obliquely from the bottom wall to the outer peripheral side, and bends from the tip of the tapered portion toward the inner peripheral side of the flange, and is lowered to the outer peripheral surface of the other outer sacrificial plate. The heat exchanger according to claim 1, further comprising an attached extension.
JP2007156585A 2007-06-13 2007-06-13 Heat exchanger Active JP4928358B2 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013024483A (en) * 2011-07-21 2013-02-04 Mitsubishi Electric Corp Plate laminate type cooler
JP2014095492A (en) * 2012-11-08 2014-05-22 Mahle Filter Systems Japan Corp Multiple-plate type oil cooler
JP2014115048A (en) * 2012-12-12 2014-06-26 Mahle Filter Systems Japan Corp Multi-plate lamination type heat exchanger and core plate
CN104132567A (en) * 2014-08-05 2014-11-05 睿能太宇（沈阳）能源技术有限公司 Sheet bar, sheet bundle and welding plate type heat exchanger
DE102014110459A1 (en) * 2014-07-24 2016-01-28 Mahle International Gmbh Heat exchanger
WO2024122419A1 (en) * 2022-12-09 2024-06-13 株式会社ティラド Cup plate layered heat exchanger

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JPH051890A (en) * 1990-07-30 1993-01-08 Calsonic Corp Core for housingless type oil cooler
JPH06159973A (en) * 1992-11-27 1994-06-07 Calsonic Corp Core part for housingless oil cooler
JPH09210578A (en) * 1996-01-31 1997-08-12 Calsonic Corp Core section of housing-less type oil cooler
JPH10185462A (en) * 1996-12-20 1998-07-14 Tennex:Kk Housingless type oil cooler
JP2001099585A (en) * 1999-09-30 2001-04-13 Denso Corp Heat exchanger made of aluminum

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Publication number Priority date Publication date Assignee Title
JPH051890A (en) * 1990-07-30 1993-01-08 Calsonic Corp Core for housingless type oil cooler
JPH06159973A (en) * 1992-11-27 1994-06-07 Calsonic Corp Core part for housingless oil cooler
JPH09210578A (en) * 1996-01-31 1997-08-12 Calsonic Corp Core section of housing-less type oil cooler
JPH10185462A (en) * 1996-12-20 1998-07-14 Tennex:Kk Housingless type oil cooler
JP2001099585A (en) * 1999-09-30 2001-04-13 Denso Corp Heat exchanger made of aluminum

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013024483A (en) * 2011-07-21 2013-02-04 Mitsubishi Electric Corp Plate laminate type cooler
JP2014095492A (en) * 2012-11-08 2014-05-22 Mahle Filter Systems Japan Corp Multiple-plate type oil cooler
JP2014115048A (en) * 2012-12-12 2014-06-26 Mahle Filter Systems Japan Corp Multi-plate lamination type heat exchanger and core plate
US10076812B2 (en) 2012-12-12 2018-09-18 Mahle Filter Systems Japan Corporation Multi-plate-stack-type heat exchanger, and core plate therefor
DE102014110459A1 (en) * 2014-07-24 2016-01-28 Mahle International Gmbh Heat exchanger
CN104132567A (en) * 2014-08-05 2014-11-05 睿能太宇（沈阳）能源技术有限公司 Sheet bar, sheet bundle and welding plate type heat exchanger
WO2024122419A1 (en) * 2022-12-09 2024-06-13 株式会社ティラド Cup plate layered heat exchanger

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