WO2019117312A1 - Stacked heat exchanger - Google Patents

Stacked heat exchanger Download PDF

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Publication number
WO2019117312A1
WO2019117312A1 PCT/JP2018/046227 JP2018046227W WO2019117312A1 WO 2019117312 A1 WO2019117312 A1 WO 2019117312A1 JP 2018046227 W JP2018046227 W JP 2018046227W WO 2019117312 A1 WO2019117312 A1 WO 2019117312A1
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Prior art keywords
flow path
heat exchanger
plate
fluid
flow
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PCT/JP2018/046227
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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 JP2019559238A priority Critical patent/JP7244438B2/en
Publication of WO2019117312A1 publication Critical patent/WO2019117312A1/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
    • 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
    • F28D9/02—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 heat-exchange media travelling at an angle to one another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning

Definitions

  • the present invention relates to a laminated heat exchanger mainly suitable as an oil cooler.
  • the oil cooler described in the following Patent Document 1 has a large number of plate-like plates which are rectangular in plan and have the same shape, and is formed with an oil flow passage and a cooling water flow passage every other plate.
  • an oil communication hole and a cooling water communication hole are disposed at positions 180 ° apart from the center. Then, in the communication hole 7 on the outlet side of the cooling water, as shown in FIG. 13, the main flow 3a flows through the central portion, and the side flow 3b merges so as to be orthogonal to the main flow 3a.
  • JP 2008-045477 A Japanese Patent Application Publication No. 08-327275
  • the fluid is joined at the outlet side communication hole so that the side flow is orthogonal to the main flow flowing through the central portion. Therefore, the resistance of the flow path is increased. Furthermore, in each flow path which differs in the lamination direction, variation occurs in the flow of fluid, and there was a fault based on which heat exchange performance in each stage differs. Then, this invention makes it a subject to eliminate the variation in the flow of the fluid in each stage of a lamination direction as much as possible by performing the flow of the fluid in each plate of a lamination type heat exchanger smoothly.
  • the first plate 1 and the second plate 2 having the same shape in the outer periphery and having at least four holes aligned in the stacking direction in a plane are alternately arranged,
  • the first channels 4 through which the first fluid 3 circulates every other sheet and the second channels 6 through which the second fluid 5 circulates are alternately formed, Both ends of the first flow path 4 are opened to the first communication hole 7, and both ends of the second flow path 6 are opened to the second communication hole 8,
  • the first communication holes 7 are disposed at both ends of the second flow path 6, and the hole edges of the pair of opposing holes are joined together,
  • the second communication holes 8 are disposed at both ends of the first flow path 4, and in the laminated heat exchanger formed by joining the hole edges of the pair of opposing holes,
  • the main flow 3a flows in the stacking direction in the central portion, and in the peripheral portion, the side flow 3b merges with the main flow 3a,
  • the burring portion 9 is formed also in the communication holes 7 and 8 on the inlet side.
  • the present invention according to claim 3 is the laminated heat exchanger according to claim 1, wherein the first fluid 3 is cooling water and the second fluid 5 is oil.
  • the stacked heat exchanger according to any one of claims 1 to 3 wherein the height of the burring portion 9 of each plate 1, 2 is formed higher toward the downstream outlet. It is.
  • the present invention according to claim 5 is the laminated heat exchanger according to any one of claims 1 to 4, wherein the outer periphery of each of the plates 1 and 2 is formed in a square or a circle.
  • the fluid is directed to the hole edge of either the first plate 1 or the second plate 2 toward the downstream side of the outlet
  • the side wall 3b is directed toward the main flow direction obliquely to the main flow 3a passing through the center of the communication hole, and the side flow 3b merges into the main flow 3a. It is characterized by Therefore, the fluid flowing into the communication hole is smoothly guided in the downstream direction as compared with the case where the fluid flows perpendicularly to the main flow, and the vortex does not occur at the merging portion, thereby reducing the fluid resistance and causing the heat to flow. Exchange performance can be improved.
  • the burring portion 9 is formed also in the communication hole on the inlet side into which the fluid flows, the flow resistance of the fluid is reduced even on the inlet side to flow the fluid in each flow path. It can be distributed smoothly.
  • the first fluid 3 is cooling water
  • the second fluid 5 is oil, so that the flow of the cooling water can be facilitated.
  • the height of the burring portion 9 of each of the plates 1 and 2 is increased toward the downstream side outlet, the downstream side flow in which the flow rate is increased can be performed more smoothly. According to the invention of claim 5, even if the outer peripheries of the plates 1 and 2 are square or circular, the heat exchanger can be applied with high versatility.
  • FIG. 1 is an explanatory view of the main part of the heat exchanger of the present invention.
  • FIG. 2 is an exploded perspective view of the same heat exchanger.
  • FIG. 3 is a plan view of the same. 4 is the same longitudinal cross-sectional view, and is a cross-sectional view taken along the line IV-IV in FIG.
  • FIG. 5 is the longitudinal cross-sectional view, Comprising: The VV arrow directional cross-sectional view of FIG.
  • FIG. 6 is a longitudinal sectional view of an essential part of a second embodiment of the heat exchanger according to the present invention.
  • FIG. 7 is an essential part longitudinal cross-sectional view of the other Example of the heat exchanger of this invention.
  • FIG. 1 is an explanatory view of the main part of the heat exchanger of the present invention.
  • FIG. 2 is an exploded perspective view of the same heat exchanger.
  • FIG. 8 is an essential part longitudinal cross-sectional view of the further another Example of the heat exchanger of this invention.
  • FIG. 9 is a perspective view of still another embodiment of the heat exchanger of the present invention.
  • FIG. 10 is a perspective view of still another embodiment of the heat exchanger of the present invention.
  • FIG. 11 is a perspective view of still another embodiment of the heat exchanger of the present invention.
  • FIG. 12 is a perspective view of still another embodiment of the heat exchanger of the present invention.
  • FIG. 13 is an explanatory view of a main part of a conventional heat exchanger.
  • FIG. 1 to 5 show a heat exchanger according to a first embodiment of the present invention, which is applied as an oil cooler.
  • 1 is a longitudinal sectional view of the main part showing its action
  • FIG. 2 is an exploded perspective view of the heat exchanger
  • FIG. 3 is a plan view thereof
  • FIG. 4 is a sectional view taken along the line IV-IV in FIG.
  • This laminated type heat exchanger is an oil cooler, and as shown in FIG. 2 to FIG. 5, the first plate 1 and the second plate 2 in which four holes respectively aligned in the laminating direction are formed at four corners are alternately arranged.
  • the first flow path 4 through which the first fluid 3 flows and the second flow path 6 through which the second fluid 5 flows are alternately formed every other sheet in the stacking direction.
  • the two plates 1 and 2 are formed by rotating the same plate whose outer periphery is formed into a square every other sheet by rotating it by 90 ° in the circumferential direction, and the annular convex portion 16 at the diagonal position in the stacking direction It protrudes.
  • the dimples 15 are formed on the plane that constitutes the first flow path 4, and the inner fins 13 are arranged on the plane that constitutes the second flow path 6. Both ends of the first flow path 4 are opened in the first communication hole 7 as shown in FIG. 4 and both ends of the second flow path 6 are opened in the second communication hole 8 as shown in FIG.
  • the upper end plate 12 is disposed at the upper end in the stacking direction, and the base plate 14 is disposed at the lower end as shown in FIG.
  • the first communication holes 7 are disposed at both ends of the second flow path 6 as is apparent from FIG. 4, and the hole edges of the opposing pair of holes are joined. Further, as shown in FIG. 5, the second communication holes 8 are disposed at both ends of the first flow path 4 and are formed by joining the hole edges of a pair of opposite holes.
  • the feature of the present invention is that, in FIGS. 1 and 2, the burring portion 9 stands in the direction of the inlet pipe 11 and the outlet pipe 10 at the hole edge of the first communication hole 7 on the inlet side and the outlet side of the first flow path 4. It is the point which raised and formed.
  • the main flow 3a flows in the central portion to the outlet pipe 10 side in the stacking direction of the plates, and the side flow 3b is obliquely first at the hole edge of the first communication hole 7 It flows into the communication hole 7.
  • the side flow 3 b flows in each first flow passage 4 and is guided from one first communication hole 7 to the other first communication hole 7, and the burring portion 9 makes the flow direction oblique to the main flow 3 a. Guide in the direction. Then, the main stream 3 a and the side stream 3 b join together and flow out from the outlet pipe 10. Furthermore, also in the first communication hole 7 on the inlet side, as shown in FIG.
  • the main flow 3a circulates in the stacking direction of the plates in the central portion thereof, and the side flow 3b is oblique at the hole edge of the first communication hole 7 Smoothly flow into the first passage 4.
  • the first fluid 3 flowing through the first flow passage 4 is cooling water
  • the second fluid 5 flowing through the second flow passage 6 is oil.
  • the first fluid 3 flowing through the first flow path 4 is the main stream in the first communication hole 7 on the outlet side since there is conventionally no burring portion in the first communication hole 7. Enter 3a directly.
  • the first fluid 3 can be guided in an oblique direction by the burring portion 9 and smoothly joined to the main stream 3a.
  • FIG. 6 shows a second embodiment of the present invention.
  • the burring portion 9 is raised at the hole edge on the second plate 2 side.
  • the burring portion 9 is raised at the hole edge on the first plate 1 side. Therefore, the burring portion 9 may be any hole edge of the first plate 1 and the second plate 2. In any case, it is raised toward the outlet pipe 10 side.
  • FIG. 7 shows a third embodiment of the present invention.
  • This embodiment is different from the above embodiment in that the height of the burring portion 9 is formed higher toward the upper stage in the stacking direction. That is, the height of the top of the burring portion 9 is the highest, and the height is lower toward the bottom. According to experiments, when the burring of each part is formed in this way, the flow rate in each stage can be made as uniform as possible.
  • FIG. 8 shows still another embodiment of the present invention, which differs from the embodiment of FIG. 1 in that the burring portion 9 is formed only in the semicircle of the hole edge. As described above, even if the burring portion 9 is formed in half of the hole edge in the cooling water outflow portion of the hole edge portion, the sidestream guiding effect can be expected.
  • FIG. 9 is a perspective view of an essential portion showing still another embodiment of the heat exchanger according to the present invention, and this embodiment differs from FIG. 8 in that a cutout is provided at the hole edge of the burring portion 9.
  • the portion is directed to the corner portion of the plate, and the notch is formed obliquely.
  • FIG. 10 is a perspective view of an essential part showing still another embodiment of the heat exchanger of the present invention, and in this embodiment, the burring part 9 is formed intermittently. As a result, the flow rate can be adjusted by the burring unit 9.
  • the burring portion 9 may be formed in a saw blade shape.
  • the inlet pipe 11 and the outlet pipe 10 for the cooling water both project upward, but the present invention is of course not limited to this example, and the outlet pipe 10 However, the present invention is also applicable to the case where the light is led downward through the base plate 14.
  • the burring portion 9 is provided in the first communication hole 7 in order to improve the flow of the first fluid 3.
  • Burring portions 9 may be formed in the respective second communication holes 8 in the second fluid 5 in place of the first fluid 3 as well. Thereby, also in the second fluid 5 (oil), the flow of the fluid in the second communication holes 8 can be promoted, and as a result, the flow rate in each stage of each plate can be made uniform, and the heat exchange performance can be improved. . At the same time, the pressure loss of each flow path can be reduced.
  • the present invention can be used as a heat exchanger for oil coolers, radiators, EGR coolers and the like.

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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)

Abstract

In this stacked heat exchanger, a main flow 3a and a side flow 3b converge smoothly in a communication hole on an outlet side. A burring part 9 is formed on the hole edge part of one of a first plate 1 and a second plate 2 so as to protrude toward an outlet pipe 10, the side flow 3b is guided in an oblique manner with respect to the main flow 3a that passes through the center part of a first communication hole 7, and the main flow 3a and the side flow 3b are caused to converge.

Description

積層型熱交換器Stacked heat exchanger
　本発明は、主としてオイルクーラとして最適な積層型熱交換器に関する。 TECHNICAL FIELD The present invention relates to a laminated heat exchanger mainly suitable as an oil cooler.
　下記特許文献１に記載されたオイルクーラは、平面が方形で同一形状の多数の皿状プレートを積層し、各プレートの一枚おきにオイル流路と冷却水流路とを形成したものである。
　また、下記特許文献２に記載のオイルクーラは、外周が円形に形成された同一形状のプレートを積層し、前記特許文献１同様にオイル流路と冷却水流路を交互に形成したものである。
　これらのオイルクーラは、中心に対して１８０°離れた位置にオイルの連通孔と冷却水の連通孔とが夫々配置されている。
　そして、冷却水は、その出口側の連通孔７において、図１３に示す如く、その中心部を主流３ａが流通し、その主流３ａに直交するように側流３ｂが合流する。 The oil cooler described in the following Patent Document 1 has a large number of plate-like plates which are rectangular in plan and have the same shape, and is formed with an oil flow passage and a cooling water flow passage every other plate.
Moreover, the oil cooler of the following patent document 2 laminates | stacks the plate of the same shape by which the outer periphery was formed circularly, and forms an oil flow path and a cooling water flow path alternately like the said patent document 1.
In these oil coolers, an oil communication hole and a cooling water communication hole are disposed at positions 180 ° apart from the center.
Then, in the communication hole 7 on the outlet side of the cooling water, as shown in FIG. 13, the main flow 3a flows through the central portion, and the side flow 3b merges so as to be orthogonal to the main flow 3a.
特開２００８−０４５４７７号公報JP 2008-045477 A 特開平０８−３２７２７５号公報Japanese Patent Application Publication No. 08-327275
　従来の積層型熱交換器は、流体が出口側の連通孔で、中心部を流通する主流に対して、側流が直交するように合流する。そのため、流路の抵抗が大きくなる。さらには、積層方向に異なる各流路において、流体の流れにバラツキが生じ、それに基づいて各段における熱交換性能が異なる欠点があった。
　そこで、本発明は積層型熱交換器の各プレートにおける流体の流れを円滑に行うことにより、可能な限り積層方向の各段における流体の流れのバラツキを解消することを課題とする。 In the conventional stacked heat exchanger, the fluid is joined at the outlet side communication hole so that the side flow is orthogonal to the main flow flowing through the central portion. Therefore, the resistance of the flow path is increased. Furthermore, in each flow path which differs in the lamination direction, variation occurs in the flow of fluid, and there was a fault based on which heat exchange performance in each stage differs.
Then, this invention makes it a subject to eliminate the variation in the flow of the fluid in each stage of a lamination direction as much as possible by performing the flow of the fluid in each plate of a lamination type heat exchanger smoothly.
　請求項１に記載の本発明は、外周が同一形状で、それぞれ積層方向に整合する少なくとも４つの孔を平面に有する第１プレート１と第２プレート２とが交互に配置されて、積層方向の一枚おきに第１流体３が流通する第１流路４と、第２流体５が流通する第２流路６とが交互に形成され、
　第１流路４の両端は第１連通孔７に開口され、第２流路６の両端は第２連通孔８に開口され、
　第１連通孔７は、第２流路６の両端に配置されて、対向する一対ずつの孔の孔縁どうしが接合されてなり、
　第２連通孔８は、第１流路４の両端に配置されて、対向する一対ずつの孔の孔縁どうしが接合されてなる積層型熱交換器において、
　第１流路４または第２流路６の出口側の連通孔では、その中心部を積層方向に主流３ａが流通し、その周縁部では、主流３ａに対して側流３ｂが合流し、
　第１プレート１と第２プレート２のいずれか一方の孔縁部に、出口の下流側に向けて流体を案内するバーリング部９が突設され、そのバーリング部９により前記主流３ａに対して斜めに側流３ｂが導かれて、その側流３ｂが主流３ａに斜めに合流するように案内されたことを特徴とする積層型熱交換器である。
　請求項２に記載の発明は、入口側の連通孔７、８においても、前記バーリング部９が形成されたものである。
　請求項３に記載の本発明は、第１流体３が冷却水であり、第２流体５がオイルである請求項１に記載の積層型熱交換器である。
　請求項４に記載の本発明は、各プレート１、２のバーリング部９の高さが、下流側出口ほど高く形成された請求項１~請求項３のいずれかに記載の積層型熱交換器である。
　請求項５に記載の本発明は、各プレート１、２の外周が方形または円形に形成された請求項１~請求項４に記載の積層型熱交換器である。 According to the present invention, the first plate 1 and the second plate 2 having the same shape in the outer periphery and having at least four holes aligned in the stacking direction in a plane are alternately arranged, The first channels 4 through which the first fluid 3 circulates every other sheet and the second channels 6 through which the second fluid 5 circulates are alternately formed,
Both ends of the first flow path 4 are opened to the first communication hole 7, and both ends of the second flow path 6 are opened to the second communication hole 8,
The first communication holes 7 are disposed at both ends of the second flow path 6, and the hole edges of the pair of opposing holes are joined together,
The second communication holes 8 are disposed at both ends of the first flow path 4, and in the laminated heat exchanger formed by joining the hole edges of the pair of opposing holes,
In the communication hole on the outlet side of the first flow path 4 or the second flow path 6, the main flow 3a flows in the stacking direction in the central portion, and in the peripheral portion, the side flow 3b merges with the main flow 3a,
A burring portion 9 for guiding the fluid toward the downstream side of the outlet is projected at the hole edge of either one of the first plate 1 and the second plate 2, and the burring portion 9 is oblique to the main flow 3 a In the laminated heat exchanger, the side stream 3b is introduced, and the side stream 3b is guided so as to obliquely join the main stream 3a.
In the invention described in claim 2, the burring portion 9 is formed also in the communication holes 7 and 8 on the inlet side.
The present invention according to claim 3 is the laminated heat exchanger according to claim 1, wherein the first fluid 3 is cooling water and the second fluid 5 is oil.
According to the present invention as set forth in claim 4, the stacked heat exchanger according to any one of claims 1 to 3, wherein the height of the burring portion 9 of each plate 1, 2 is formed higher toward the downstream outlet. It is.
The present invention according to claim 5 is the laminated heat exchanger according to any one of claims 1 to 4, wherein the outer periphery of each of the plates 1 and 2 is formed in a square or a circle.
　本発明の熱交換器は、流体の出口側の連通孔の孔縁部では、第１プレート１と第２プレート２のいずれか一方の孔縁部に、出口の下流側に向けて流体を案内するバーリング部９が突設されて、その連通孔の中心部を通過する主流３ａに対して斜めに主流方向に向かう側流３ｂが出口側に導かれて、その側流３ｂが主流３ａに合流することを特徴とする。そのため、連通孔に流入する流体が、主流に対して直交して流入する場合に比べて、円滑に下流方向に案内されて、合流部で渦が生じることがなく、流体抵抗を減じて、熱交換性能を向上できる。
　請求項２に記載の発明によれば、流体が流入する入口側の連通孔においても、前記バーリング部９が形成されたので、入口側でも流体の流入抵抗を減じて、各流路に流体を円滑に分配することができる。
　請求項３に記載の発明は、第１流体３が冷却水であり、第２流体５がオイルであり、その冷却水の流通を円滑にすることができる。
　請求項４に記載の発明は、各プレート１，２のバーリング部９の高さを、下流側出口ほど高くしたので、流量が増大する下流側の流れをより円滑に行うことができる。
　請求項５に記載の発明によれば、各プレート１，２の外周が方形であっても、円形に形成されたものであっても適用でき、汎用性の高い熱交換器となる。 In the heat exchanger of the present invention, at the hole edge of the communication hole on the outlet side of the fluid, the fluid is directed to the hole edge of either the first plate 1 or the second plate 2 toward the downstream side of the outlet The side wall 3b is directed toward the main flow direction obliquely to the main flow 3a passing through the center of the communication hole, and the side flow 3b merges into the main flow 3a. It is characterized by Therefore, the fluid flowing into the communication hole is smoothly guided in the downstream direction as compared with the case where the fluid flows perpendicularly to the main flow, and the vortex does not occur at the merging portion, thereby reducing the fluid resistance and causing the heat to flow. Exchange performance can be improved.
According to the second aspect of the present invention, since the burring portion 9 is formed also in the communication hole on the inlet side into which the fluid flows, the flow resistance of the fluid is reduced even on the inlet side to flow the fluid in each flow path. It can be distributed smoothly.
According to the third aspect of the present invention, the first fluid 3 is cooling water, and the second fluid 5 is oil, so that the flow of the cooling water can be facilitated.
In the invention according to the fourth aspect, since the height of the burring portion 9 of each of the plates 1 and 2 is increased toward the downstream side outlet, the downstream side flow in which the flow rate is increased can be performed more smoothly.
According to the invention of claim 5, even if the outer peripheries of the plates 1 and 2 are square or circular, the heat exchanger can be applied with high versatility.
　図１は本発明の熱交換器の要部説明図。
　図２は同熱交換器の分解斜視図。
　図３は同平面図。
　図４は同縦断面図であって、図３のＩＶ−ＩＶ矢視断面図。
　図５は同縦断面図であって、図３のＶ−Ｖ矢視断面図。
　図６は本発明の熱交換器の第２実施例の要部縦断面図。
　図７は本発明の熱交換器の他の実施例の要部縦断面図。
　図８は本発明の熱交換器のさらに他の実施例の要部縦断面図。
　図９は本発明の熱交換器のさらに他の実施例の斜視図。
　図１０は本発明の熱交換器のさらに他の実施例の斜視図。
　図１１は本発明の熱交換器のさらに他の実施例の斜視図。
　図１２は本発明の熱交換器のさらに他の実施例の斜視図。
　図１３は従来型熱交換器の要部説明図。 FIG. 1 is an explanatory view of the main part of the heat exchanger of the present invention.
FIG. 2 is an exploded perspective view of the same heat exchanger.
FIG. 3 is a plan view of the same.
4 is the same longitudinal cross-sectional view, and is a cross-sectional view taken along the line IV-IV in FIG.
FIG. 5 is the longitudinal cross-sectional view, Comprising: The VV arrow directional cross-sectional view of FIG.
FIG. 6 is a longitudinal sectional view of an essential part of a second embodiment of the heat exchanger according to the present invention.
FIG. 7 is an essential part longitudinal cross-sectional view of the other Example of the heat exchanger of this invention.
FIG. 8 is an essential part longitudinal cross-sectional view of the further another Example of the heat exchanger of this invention.
FIG. 9 is a perspective view of still another embodiment of the heat exchanger of the present invention.
FIG. 10 is a perspective view of still another embodiment of the heat exchanger of the present invention.
FIG. 11 is a perspective view of still another embodiment of the heat exchanger of the present invention.
FIG. 12 is a perspective view of still another embodiment of the heat exchanger of the present invention.
FIG. 13 is an explanatory view of a main part of a conventional heat exchanger.
　次に、図面に基づいて本発明の実施の形態につき説明する。
　図１~図５は本発明の第１実施例の熱交換器であって、オイルクーラとして適用したものである。そして、図１はその作用を示す要部縦断面図、図２はその熱交換器の分解斜視図、図３は同平面図、図４は図３のＩＶ−ＩＶ矢視断面図、図５は図３のＶ−Ｖ矢視断面図である。
　この積層型熱交換器は、オイルクーラであり、図２~図５に示す如く、夫々積層方向に整合する４つの孔を四隅に形成した第１プレート１と第２プレート２とが交互に配置され、その積層方向の１枚おきに第１流体３が流通する第１流路４と、第２流体５が流通する第２流路６とが交互に形成されている。
　両プレート１，２は、外周が方形に形成された同一のものを一枚おきに、周方向に９０°回転して積層したものであり、その対角位置に環状凸部１６が積層方向に突出している。そして、第１流路４を構成する平面にはディンプル１５が形成され、第２流路６を構成する平面にはインナーフィン１３が配置されている。第１流路４の両端は、図４に示す如く第１連通孔７に開口され、第２流路６の両端は図５に示す如く第２連通孔８に開口されている。
　また、積層方向の上端には上端板１２が配置され、下端には図４に示す如く、ベースプレート１４が配置されている。そして、第１連通孔７は図４から明らかなように第２流路６の両端に配置されて、対向する一対ずつの孔の孔縁どうしが接合されてなる。
　また、第２連通孔８は図５に示す如く、第１流路４の両端に配置されて対向する一対ずつの孔の孔縁どうしが接合されてなる。
〔本発明の特徴〕
　本発明の特徴は、図１、図２において、第１流路４の入口側および出口側の第１連通孔７の孔縁部にバーリング部９を、入口パイプ１１および出口パイプ１０方向に立ち上げ形成した点である。
　この出口側の第１連通孔７においては、その中心部に主流３ａがプレートの積層方向の出口パイプ１０側に流通し、第１連通孔７の孔縁部では側流３ｂが斜めに第１連通孔７に流入する。この側流３ｂは各第１流路４内を流通し、一方の第１連通孔７から他方の第１連通孔７に導かれ、そのバーリング部９によって流れの方向を主流３ａに対して斜め方向に導く。そして、その主流３ａと側流３ｂとが合流し出口パイプ１０から流出する。
　さらに、この入口側の第１連通孔７においても、図４に示す如く、その中心部に主流３ａがプレートの積層方向に流通し、第１連通孔７の孔縁部では側流３ｂが斜めに第１通路４に円滑に流入する。
　なお、この例では第１流路４を流通する第１流体３が冷却水であり、第２流路６を流通する第２流体５がオイルである。
　図１３における、従来の作用との比較では、従来は第１連通孔７にバーリング部が存在しないため、第１流路４を流通する第１流体３は出口側の第１連通孔７において主流３ａに直行して進入する。
　本発明では第１流体３をバーリング部９により斜め方向に導き、それを主流３ａに円滑に合流させることができる。 Next, an embodiment of the present invention will be described based on the drawings.
1 to 5 show a heat exchanger according to a first embodiment of the present invention, which is applied as an oil cooler. 1 is a longitudinal sectional view of the main part showing its action, FIG. 2 is an exploded perspective view of the heat exchanger, FIG. 3 is a plan view thereof, and FIG. 4 is a sectional view taken along the line IV-IV in FIG. These are VV arrow sectional drawing of FIG.
This laminated type heat exchanger is an oil cooler, and as shown in FIG. 2 to FIG. 5, the first plate 1 and the second plate 2 in which four holes respectively aligned in the laminating direction are formed at four corners are alternately arranged. The first flow path 4 through which the first fluid 3 flows and the second flow path 6 through which the second fluid 5 flows are alternately formed every other sheet in the stacking direction.
The two plates 1 and 2 are formed by rotating the same plate whose outer periphery is formed into a square every other sheet by rotating it by 90 ° in the circumferential direction, and the annular convex portion 16 at the diagonal position in the stacking direction It protrudes. The dimples 15 are formed on the plane that constitutes the first flow path 4, and the inner fins 13 are arranged on the plane that constitutes the second flow path 6. Both ends of the first flow path 4 are opened in the first communication hole 7 as shown in FIG. 4 and both ends of the second flow path 6 are opened in the second communication hole 8 as shown in FIG.
The upper end plate 12 is disposed at the upper end in the stacking direction, and the base plate 14 is disposed at the lower end as shown in FIG. The first communication holes 7 are disposed at both ends of the second flow path 6 as is apparent from FIG. 4, and the hole edges of the opposing pair of holes are joined.
Further, as shown in FIG. 5, the second communication holes 8 are disposed at both ends of the first flow path 4 and are formed by joining the hole edges of a pair of opposite holes.
[Features of the Invention]
The feature of the present invention is that, in FIGS. 1 and 2, the burring portion 9 stands in the direction of the inlet pipe 11 and the outlet pipe 10 at the hole edge of the first communication hole 7 on the inlet side and the outlet side of the first flow path 4. It is the point which raised and formed.
In the first communication hole 7 on the outlet side, the main flow 3a flows in the central portion to the outlet pipe 10 side in the stacking direction of the plates, and the side flow 3b is obliquely first at the hole edge of the first communication hole 7 It flows into the communication hole 7. The side flow 3 b flows in each first flow passage 4 and is guided from one first communication hole 7 to the other first communication hole 7, and the burring portion 9 makes the flow direction oblique to the main flow 3 a. Guide in the direction. Then, the main stream 3 a and the side stream 3 b join together and flow out from the outlet pipe 10.
Furthermore, also in the first communication hole 7 on the inlet side, as shown in FIG. 4, the main flow 3a circulates in the stacking direction of the plates in the central portion thereof, and the side flow 3b is oblique at the hole edge of the first communication hole 7 Smoothly flow into the first passage 4.
In this example, the first fluid 3 flowing through the first flow passage 4 is cooling water, and the second fluid 5 flowing through the second flow passage 6 is oil.
In comparison with the conventional operation in FIG. 13, the first fluid 3 flowing through the first flow path 4 is the main stream in the first communication hole 7 on the outlet side since there is conventionally no burring portion in the first communication hole 7. Enter 3a directly.
In the present invention, the first fluid 3 can be guided in an oblique direction by the burring portion 9 and smoothly joined to the main stream 3a.
　次に、図６は本発明の第２実施例であり、この例ではバーリング部９が、第２プレート２側の孔縁部に立ち上げられている。前記第１実施例では、バーリング部９が第１プレート１側の孔縁部に立ち上げられていた。
　従って、バーリング部９は第１プレート１と第２プレート２の何れの孔縁部でもよい。何れの場合にも、出口パイプ１０側に向けて立上げられている。 Next, FIG. 6 shows a second embodiment of the present invention. In this example, the burring portion 9 is raised at the hole edge on the second plate 2 side. In the first embodiment, the burring portion 9 is raised at the hole edge on the first plate 1 side.
Therefore, the burring portion 9 may be any hole edge of the first plate 1 and the second plate 2. In any case, it is raised toward the outlet pipe 10 side.
　次に、図７は本発明の第３実施例であり、この例が前記実施例と異なる点は、バーリング部９の高さが積層方向の上段ほど高く形成されている点である。
　即ち、バーリング部９の高さが最上段は一番高く、最下段に行くほどその高さが低く形成されている。実験によれば、このように各部のバーリングを形成すると、各段における流量を可及的に均一にできる。 Next, FIG. 7 shows a third embodiment of the present invention. This embodiment is different from the above embodiment in that the height of the burring portion 9 is formed higher toward the upper stage in the stacking direction.
That is, the height of the top of the burring portion 9 is the highest, and the height is lower toward the bottom. According to experiments, when the burring of each part is formed in this way, the flow rate in each stage can be made as uniform as possible.
　次に、図８は本発明のさらに他の実施例であり、これが図１の実施例と異なる点は、バーリング部９を孔縁部の半円にのみ形成したものである。このように、孔縁部の冷却水流出部において、バーリング部９を孔縁の半分に形成しても側流のガイド効果が期待できる。 Next, FIG. 8 shows still another embodiment of the present invention, which differs from the embodiment of FIG. 1 in that the burring portion 9 is formed only in the semicircle of the hole edge. As described above, even if the burring portion 9 is formed in half of the hole edge in the cooling water outflow portion of the hole edge portion, the sidestream guiding effect can be expected.
　次に、図９は本発明の熱交換器のさらに他の実施例を示す要部斜視図であり、この例が前記図８と異なる点は、バーリング部９の孔縁部に設けた欠切部がプレートのコーナー部に向けられると共に、その欠切部が斜めに形成されている点である。 Next, FIG. 9 is a perspective view of an essential portion showing still another embodiment of the heat exchanger according to the present invention, and this embodiment differs from FIG. 8 in that a cutout is provided at the hole edge of the burring portion 9. The portion is directed to the corner portion of the plate, and the notch is formed obliquely.
　次に、図１０は本発明の熱交換器のさらに他の実施例を示す要部斜視図であり、この例はバーリング部９が間欠的に形成されている。それにより、バーリング部９による流量の調整が可能となる。 Next, FIG. 10 is a perspective view of an essential part showing still another embodiment of the heat exchanger of the present invention, and in this embodiment, the burring part 9 is formed intermittently. As a result, the flow rate can be adjusted by the burring unit 9.
　さらには、図１１に示す如く、バーリング部９を鋸刃状に形成してもよい。 Furthermore, as shown in FIG. 11, the burring portion 9 may be formed in a saw blade shape.
　さらには、図１２に示す如く、バーリング部９の孔縁部を外側にバーリング加工し、それによって流量調整を行うことも可能である。。
　なお、上記実施例は、図４に示す如く、冷却水の入口パイプ１１及び出口パイプ１０が共に上方に突出しているが、本発明は、この例に限定されるものでは勿論なく、出口パイプ１０がベースプレート１４を貫通して下方に導かれたものにも適用できる。 Furthermore, as shown in FIG. 12, it is also possible to burr-process the hole edge of the burring part 9 to the outside and thereby to adjust the flow rate. .
In the above embodiment, as shown in FIG. 4, the inlet pipe 11 and the outlet pipe 10 for the cooling water both project upward, but the present invention is of course not limited to this example, and the outlet pipe 10 However, the present invention is also applicable to the case where the light is led downward through the base plate 14.
　上記実施例は、第１流体３の流通の改善を行うため、その第１連通孔７にバーリング部９を設けたものである。この第１流体３に変えて第２流体５においても同様にバーリング部９を各第２連通孔８に形成しても良い。
　それにより、第２流体５（オイル）においても第２連通孔８における流体の流通を促進することができ、結果として各プレートの各段における流量を均一化し、熱交換性能を向上させることができる。それと共に、各流路の圧力損失の低減を図ることができる。 In the above embodiment, the burring portion 9 is provided in the first communication hole 7 in order to improve the flow of the first fluid 3. Burring portions 9 may be formed in the respective second communication holes 8 in the second fluid 5 in place of the first fluid 3 as well.
Thereby, also in the second fluid 5 (oil), the flow of the fluid in the second communication holes 8 can be promoted, and as a result, the flow rate in each stage of each plate can be made uniform, and the heat exchange performance can be improved. . At the same time, the pressure loss of each flow path can be reduced.
　本発明は、熱交換器としてオイルクーラ，ラジエータ，ＥＧＲクーラその他に利用できる。 The present invention can be used as a heat exchanger for oil coolers, radiators, EGR coolers and the like.
　１　第１プレート
　２　第２プレート
　３　第１流体
　３ａ　主流
　３ｂ　側流
　４　第１流路
　５　第２流体
　６　第２流路
　７　第１連通孔
　８　第２連通孔
　９　バーリング部
　１０　出口パイプ
　１１　入口パイプ
　１２　上端板
　１３　インナーフィン
　１４　ベースプレート
　１５　ディンプル
　１６　環状凸部
　１７　凸部
　１８　入口
　１９　出口 DESCRIPTION OF SYMBOLS 1 1st plate 2 2nd plate 3 1st fluid 3a Main stream 3b Side flow 4 1st flow path 5 2nd fluid 6 2nd flow path 7 1st communicating hole 8 2nd communicating hole 9 Burring 10 outlet pipe 11 inlet pipe 12 upper end plate 13 inner fin 14 base plate 15 dimple 16 annular convex portion 17 convex portion 18 inlet 19 outlet

Claims (5)

  1. 　外周が同一形状で、それぞれ積層方向に整合する少なくとも４つの孔を平面に有する第１プレート（１）と第２プレート（２）とが交互に配置されて、積層方向の一枚おきに第１流体（３）が流通する第１流路（４）と、第２流体（５）が流通する第２流路（６）とが交互に形成され、
    　第１流路（４）の両端は第１連通孔（７）に開口され、第２流路（６）の両端は第２連通孔（８）に開口され、
    　第１連通孔（７）は、第２流路（６）の両端に配置されて、対向する一対ずつの孔の孔縁どうしが接合されてなり、
    　第２連通孔（８）は、第１流路（４）の両端に配置されて、対向する一対ずつの孔の孔縁どうしが接合されてなる積層型熱交換器において、
    　第１流路（４）または第２流路（６）の出口側の連通孔では、その中心部を積層方向に主流（３ａ）が流通し、その周縁部では、主流（３ａ）に対して側流（３ｂ）が合流し、
    　第１プレート（１）と第２プレート（２）のいずれか一方の孔縁部に、出口の下流側に向けて流体を案内するバーリング部（９）が突設され、そのバーリング部（９）により前記主流（３ａ）に対して斜めに側流（３ｂ）が導かれて、その側流（３ｂ）が主流（３ａ）に斜めに合流するように案内されたことを特徴とする積層型熱交換器。     The first plate (1) and the second plate (2) having the same outer periphery and at least four holes aligned in the stacking direction in a plane are alternately arranged, and every other sheet in the stacking direction A first flow path (4) through which the fluid (3) flows and a second flow path (6) through which the second fluid (5) flows are alternately formed,
    Both ends of the first flow path (4) are opened to the first communication hole (7), and both ends of the second flow path (6) are opened to the second communication hole (8),
    The first communication holes (7) are disposed at both ends of the second flow path (6), and the hole edges of the pair of opposing holes are joined together,
    The second communication holes (8) are disposed at both ends of the first flow path (4), and in the stacked heat exchanger, the hole edges of the pair of opposing holes are joined,
    In the communication hole on the outlet side of the first flow path (4) or the second flow path (6), the main flow (3a) flows in the stacking direction at the central portion thereof, and in the peripheral portion, the main flow (3a) Sidestream (3b) merges,
    A burring portion (9) for guiding the fluid toward the downstream side of the outlet is protrusively provided at one of the hole edges of the first plate (1) and the second plate (2), and the burring portion (9) A side stream (3b) is led obliquely to the main stream (3a), and the side stream (3b) is guided to join the main stream (3a) obliquely. Exchanger.
  2. 　前記入口側の連通孔（７）（８）においても、前記バーリング部（９）が形成されたことを特徴とする請求項１に記載の積層型熱交換器。 The laminated heat exchanger according to claim 1, wherein the burring portion (9) is also formed in the communication hole (7) (8) on the inlet side.
  3. 　第１流体（３）が冷却水であり、第２流体（５）がオイルである請求項１に記載の積層型熱交換器。 The stack type heat exchanger according to claim 1, wherein the first fluid (3) is a cooling water and the second fluid (5) is an oil.
  4. 　各プレート（１）（２）のバーリング部（９）の高さが、下流側出口ほど高く形成された請求項１~請求項３のいずれかに記載の積層型熱交換器。 The stacked heat exchanger according to any one of claims 1 to 3, wherein the height of the burring portion (9) of each plate (1) (2) is formed higher toward the downstream outlet.
  5. 　各プレート（１）（２）の外周が方形または円形に形成された請求項１~請求項４に記載の積層型熱交換器。 5. The laminated heat exchanger according to claim 1, wherein the outer periphery of each plate (1) (2) is formed in a square or a circle.
PCT/JP2018/046227 2017-12-11 2018-12-10 Stacked heat exchanger WO2019117312A1 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04184097A (en) * 1990-11-14 1992-07-01 Nippondenso Co Ltd Laminated type heat exchanger
JPH08327275A (en) * 1995-06-05 1996-12-13 Toyo Radiator Co Ltd Lamination type oil cooler
JP2004205055A (en) * 2002-12-20 2004-07-22 Toyo Radiator Co Ltd Plate type heat exchanger
JP2005016851A (en) * 2003-06-26 2005-01-20 Calsonic Kansei Corp Heat exchanger
JP2005274067A (en) * 2004-03-25 2005-10-06 Calsonic Kansei Corp Stacked heat exchanger
JP2005291671A (en) * 2004-04-05 2005-10-20 Calsonic Kansei Corp Stacked heat exchanger
JP2006342997A (en) * 2005-06-07 2006-12-21 Denso Corp Heat exchanger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04184097A (en) * 1990-11-14 1992-07-01 Nippondenso Co Ltd Laminated type heat exchanger
JPH08327275A (en) * 1995-06-05 1996-12-13 Toyo Radiator Co Ltd Lamination type oil cooler
JP2004205055A (en) * 2002-12-20 2004-07-22 Toyo Radiator Co Ltd Plate type heat exchanger
JP2005016851A (en) * 2003-06-26 2005-01-20 Calsonic Kansei Corp Heat exchanger
JP2005274067A (en) * 2004-03-25 2005-10-06 Calsonic Kansei Corp Stacked heat exchanger
JP2005291671A (en) * 2004-04-05 2005-10-20 Calsonic Kansei Corp Stacked heat exchanger
JP2006342997A (en) * 2005-06-07 2006-12-21 Denso Corp Heat exchanger

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