WO2020246412A1 - Plate heat exchanger and distributor for plate heat exchanger - Google Patents

Plate heat exchanger and distributor for plate heat exchanger Download PDF

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WO2020246412A1
WO2020246412A1 PCT/JP2020/021530 JP2020021530W WO2020246412A1 WO 2020246412 A1 WO2020246412 A1 WO 2020246412A1 JP 2020021530 W JP2020021530 W JP 2020021530W WO 2020246412 A1 WO2020246412 A1 WO 2020246412A1
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fluid
distribution
flow path
tubular
heat exchanger
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田中 信雄
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株式会社日阪製作所
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00Heat-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
    • F28D9/02Heat-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning

Abstract

This plate heat exchanger is characterized by being provided with: a heat exchanger body in which a plurality of first flow passages are formed by stacking a plurality of heat transfer plates in a prescribed direction; and a distributor that distributes a first fluid, wherein the heat transfer plates each have a through-hole at a corresponding position, a connection space to be connected with the first flow passages is formed when the through-holes are aligned, the distributor has a cylindrical wall that includes a plurality of cylindrical parts surrounding a hollow part and stacked in a thickness direction, the cylindrical wall has distribution flow passages in two or more cylindrical parts, and the distribution flow passages include distribution parts through which the first fluid flowing in from the hollow part is distributed in a prescribed direction on in a direction opposite thereto and include a plurality of outlets connected with one or the other side of the distribution parts and connected with the connection space or the first flow passages.

Description

プレート式熱交換器、及びプレート式熱交換器用の分配器Plate heat exchangers and distributors for plate heat exchangers 関連出願の相互参照Cross-reference of related applications
 本願は、日本国特願2019-105205号の優先権を主張し、日本国特願2019-105205号の内容は、引用によって本願明細書の記載に組み込まれる。 The present application claims the priority of Japanese Patent Application No. 2019-105205, and the content of Japanese Patent Application No. 2019-105205 is incorporated into the description of the present application by citation.
 本発明は、蒸発器や凝縮器として用いられるプレート式熱交換器、及びプレート式熱交換器用の分配器に関するものである。 The present invention relates to a plate heat exchanger used as an evaporator or a condenser, and a distributor for a plate heat exchanger.
 従来から、流体を蒸発させる蒸発器又は流体を凝縮させる凝縮器として用いられるプレート式熱交換器が知られている(特許文献1参照)。このプレート式熱交換器は、図26~図28に示すように、複数の伝熱プレート101を備える。これら複数の伝熱プレート101が各伝熱プレート101の厚さ方向に重ね合わされることによって、蒸発又は凝縮の対象となる第一流体Aを流通させる第一流路Faと、第一流体Aを蒸発又は凝縮させる第二流体Bを流通させる第二流路Fbと、が形成される。この第二流体Bは、第一流体Aとの熱交換の対象となる流体である。また、複数の伝熱プレート101が重ね合わされることによって、第一流路Faと連通し且つ第一流路Faに第一流体Aを流入させる第一流体供給路Fa1と、第一流路Faと連通し且つ第一流路Faから第一流体Aを流出させる第一流体排出路Fa2と、第二流路Fbと連通し且つ第二流路Fbに第二流体Bを流入させる第二流体供給路Fb1と、第二流路Fbと連通し且つ第二流路Fbから第二流体Bを流出させる第二流体排出路Fb2とが形成される。 Conventionally, a plate type heat exchanger used as an evaporator for evaporating a fluid or a condenser for condensing a fluid has been known (see Patent Document 1). As shown in FIGS. 26 to 28, this plate heat exchanger includes a plurality of heat transfer plates 101. By superimposing these plurality of heat transfer plates 101 in the thickness direction of each heat transfer plate 101, the first flow path Fa through which the first fluid A to be evaporated or condensed flows and the first fluid A are evaporated. Alternatively, a second flow path Fb through which the second fluid B to be condensed is circulated is formed. The second fluid B is a fluid that is subject to heat exchange with the first fluid A. Further, by superimposing the plurality of heat transfer plates 101, the first fluid supply path Fa1 communicating with the first flow path Fa and the first fluid A flowing into the first flow path Fa communicates with the first flow path Fa. A first fluid discharge path Fa2 that allows the first fluid A to flow out from the first flow path Fa, and a second fluid supply path Fb1 that communicates with the second flow path Fb and allows the second fluid B to flow into the second flow path Fb. , A second fluid discharge path Fb2 that communicates with the second flow path Fb and allows the second fluid B to flow out from the second flow path Fb is formed.
 複数の伝熱プレート101のそれぞれは、矩形状のプレートであり、両面に複数の凹条及び凸条を有する。これら複数の伝熱プレート101が重ね合わされたときに隣り合う伝熱プレート101の凸条同士が交差衝合することによって、隣り合う伝熱プレート101間に第一流路Fa又は第二流路Fbが形成される。このプレート式熱交換器100では、第一流路Faと第二流路Fbとが伝熱プレート101を境にして交互に形成されている。 Each of the plurality of heat transfer plates 101 is a rectangular plate, and has a plurality of concave and convex stripes on both sides. When the plurality of heat transfer plates 101 are overlapped with each other, the protrusions of the adjacent heat transfer plates 101 intersect with each other, so that the first flow path Fa or the second flow path Fb is formed between the adjacent heat transfer plates 101. It is formed. In this plate type heat exchanger 100, the first flow path Fa and the second flow path Fb are alternately formed with the heat transfer plate 101 as a boundary.
 また、複数の伝熱プレート101のそれぞれは、四隅に貫通孔を有する。これら四隅の貫通孔は、第一貫通孔102、第二貫通孔103、第三貫通孔104、及び、第四貫通孔105である。このため、複数の伝熱プレート101が重ね合わされることで、第一貫通孔102がX軸方向に連なって第一流体供給路Fa1が形成される。また、第二貫通孔103がX軸方向に連なって第一流体排出路Fa2が形成される。また、第三貫通孔104がX軸方向に連なって第二流体供給路Fb1が形成される。また、第四貫通孔105がX軸方向に連なって第二流体排出路Fb2が形成される。 Further, each of the plurality of heat transfer plates 101 has through holes at the four corners. The through holes at these four corners are the first through hole 102, the second through hole 103, the third through hole 104, and the fourth through hole 105. Therefore, by superimposing the plurality of heat transfer plates 101, the first through holes 102 are connected in the X-axis direction to form the first fluid supply path Fa1. Further, the second through holes 103 are connected in the X-axis direction to form the first fluid discharge path Fa2. Further, the third through hole 104 is connected in the X-axis direction to form the second fluid supply path Fb1. Further, the fourth through hole 105 is connected in the X-axis direction to form the second fluid discharge path Fb2.
 このように構成されるプレート式熱交換器100では、第一流体供給路Fa1に供給された第一流体Aは、第一流路Faに流入して該第一流路Faを流通した後、第一流体排出路Fa2に流出する。また、第二流体供給路Fb1に供給された第二流体Bは、第二流路Fbに流入して該第二流路Fbを流通した後、第二流体排出路Fb2に流出する。このとき、第一流路Faを流れる第一流体Aと第二流路Fbを流れる第二流体Bとが伝熱プレート101を介して熱交換することによって、第一流体Aが蒸発又は凝縮する。 In the plate heat exchanger 100 configured as described above, the first fluid A supplied to the first fluid supply path Fa1 flows into the first flow path Fa and flows through the first flow path Fa, and then first. It flows out to the fluid discharge path Fa2. Further, the second fluid B supplied to the second fluid supply path Fb1 flows into the second flow path Fb, flows through the second flow path Fb, and then flows out to the second fluid discharge path Fb2. At this time, the first fluid A flowing through the first flow path Fa and the second fluid B flowing through the second flow path Fb exchange heat via the heat transfer plate 101, so that the first fluid A evaporates or condenses.
 一般に、プレート式熱交換器100において、重ね合わされる伝熱プレート101の数が増えると、熱交換に寄与する伝熱面積の合計が大きくなるため、熱交換性能が向上するとされている。 Generally, in the plate type heat exchanger 100, when the number of superposed heat transfer plates 101 increases, the total heat transfer area contributing to heat exchange increases, so that the heat exchange performance is improved.
 しかし、上記のプレート式熱交換器100において伝熱プレート101の数が増えると、第一流体供給路Fa1が長くなって該第一流体供給路Fa1を流通する第一流体Aの流通抵抗が大きくなることで複数の第一流路Faに対する第一流体Aの分配ムラが生じ、これにより、熱交換性能が低下する。 However, as the number of heat transfer plates 101 increases in the plate heat exchanger 100, the first fluid supply path Fa1 becomes longer and the flow resistance of the first fluid A flowing through the first fluid supply path Fa1 increases. As a result, uneven distribution of the first fluid A with respect to the plurality of first flow paths Fa occurs, which lowers the heat exchange performance.
 詳しくは、第一流体供給路Fa1が伝熱プレート101の重ね合わせ方向に長くなると、第一流体Aが第一流体供給路Fa1を流通する際の流通抵抗が大きくなる。このため、プレート式熱交換器100において重ね合わされる伝熱プレート101の数が多くなると、前記流通抵抗によって、第一流体供給路Fa1の入口側における第一流路Faへの第一流体Aの流入量と、第一流体供給路Fa1の奥側における第一流路Faへの第一流体Aの流入量とが不均一になる。即ち、プレート式熱交換器100において、重ね合わせる伝熱プレート101が多くなると、流通抵抗に起因する第一流体Aの分配ムラが生じる。この分配ムラが生じると、分配ムラのない場合に比べ、プレート式熱交換器100の熱交換性能が低下する。 Specifically, when the first fluid supply path Fa1 becomes longer in the overlapping direction of the heat transfer plates 101, the flow resistance when the first fluid A flows through the first fluid supply path Fa1 increases. Therefore, when the number of heat transfer plates 101 stacked in the plate heat exchanger 100 increases, the flow resistance causes the first fluid A to flow into the first flow path Fa on the inlet side of the first fluid supply path Fa1. The amount and the inflow amount of the first fluid A into the first flow path Fa on the inner side of the first fluid supply path Fa1 become non-uniform. That is, in the plate heat exchanger 100, when the number of heat transfer plates 101 to be overlapped increases, uneven distribution of the first fluid A due to the flow resistance occurs. When this uneven distribution occurs, the heat exchange performance of the plate heat exchanger 100 deteriorates as compared with the case where there is no uneven distribution.
 このように、プレート式熱交換器100において、重ね合わされる伝熱プレート101の数を多くすることによる熱交換性能(蒸発性能或いは凝縮性能)の向上には限界がある。 As described above, in the plate heat exchanger 100, there is a limit to the improvement of the heat exchange performance (evaporation performance or condensation performance) by increasing the number of the heat transfer plates 101 to be overlapped.
日本国特開平11-287572号公報Japanese Patent Application Laid-Open No. 11-287572
 そこで、本発明は、複数の第一流路に対する第一流体の分配ムラを抑えることのできるプレート式熱交換器、及びプレート式熱交換器用の分配器を提供することを課題とする。 Therefore, it is an object of the present invention to provide a plate type heat exchanger capable of suppressing uneven distribution of the first fluid to a plurality of first flow paths, and a distributor for the plate type heat exchanger.
 本発明に係るプレート式熱交換器は、
 それぞれが所定方向と直交する面方向に広がる複数の伝熱プレートを有し、これら複数の伝熱プレートが前記所定方向に重ね合わされていることによって第一流体を流通させる第一流路と第二流体を流通させる第二流路とが各伝熱プレートを境に交互に並ぶように複数の第一流路と少なくとも一つの第二流路とが形成されている熱交換器本体と、
 前記第一流体を前記複数の第一流路に分配する分配器と、を備え、
 前記複数の伝熱プレートのうちの連続して並ぶ二つ以上の伝熱プレートのそれぞれは、前記所定方向から見て相互に重なる位置に貫通孔を有し、
 前記連続して並ぶ二つ以上の伝熱プレートは、各貫通孔が前記所定方向に連なることによって各第一流路と連通する連通空間を形成し、
 前記分配器は、前記連通空間内において前記所定方向に延び且つ前記熱交換器本体の外部から供給される前記第一流体が流通する中空部を囲む筒状壁であって、該筒状壁の厚さ方向に積層される複数の筒状部を備える筒状壁を有し、
 前記筒状壁は、前記複数の筒状部のうちの前記厚さ方向に連続して重なる二つ以上の筒状部内に前記第一流体が流通可能な分配流路を有し、
 前記分配流路は、
  前記中空部から該分配流路に流入した前記第一流体を前記所定方向の一方と他方とに分配する分配部であって、前記第一流体が前記一方に流出する一方側分配部出口及び前記第一流体が前記他方に流出する他方側分配部出口を含む分配部と、
  前記一方側分配部出口又は前記他方側分配部出口と直接又は間接にそれぞれ連通すると共に、少なくとも前記厚さ方向における最も外側の筒状部を貫通することにより前記連通空間又は前記第一流路とそれぞれ連通する複数の流出部と、を含み、
 前記複数の流出部は、前記所定方向に間隔をあけて配置されている。
The plate heat exchanger according to the present invention
Each has a plurality of heat transfer plates extending in a plane direction orthogonal to a predetermined direction, and the plurality of heat transfer plates are superposed in the predetermined direction to allow the first fluid to flow through the first flow path and the second fluid. A heat exchanger body in which a plurality of first flow paths and at least one second flow path are formed so that the second flow paths for circulating the fluid are alternately arranged with each heat transfer plate as a boundary.
A distributor that distributes the first fluid to the plurality of first flow paths is provided.
Each of the two or more heat transfer plates arranged in succession among the plurality of heat transfer plates has through holes at positions where they overlap each other when viewed from the predetermined direction.
The two or more heat transfer plates arranged in succession form a communication space in which each through hole is connected in the predetermined direction to communicate with each first flow path.
The distributor is a tubular wall that surrounds a hollow portion that extends in the predetermined direction in the communication space and through which the first fluid supplied from the outside of the heat exchanger body flows, and is a tubular wall of the tubular wall. It has a tubular wall with a plurality of tubular portions stacked in the thickness direction,
The tubular wall has a distribution flow path through which the first fluid can flow in two or more tubular portions that are continuously overlapped in the thickness direction among the plurality of tubular portions.
The distribution channel is
A distribution unit that distributes the first fluid that has flowed into the distribution flow path from the hollow portion to one and the other in the predetermined direction, and is an outlet of the one-side distribution unit through which the first fluid flows out to the one and the said. A distributor including the outlet of the other side where the first fluid flows out to the other,
Directly or indirectly communicate with the outlet of the one-side distribution unit or the outlet of the other-side distribution unit, and penetrate the outermost tubular portion in at least the thickness direction to communicate with the communication space or the first flow path, respectively. Including multiple outflow parts that communicate
The plurality of outflow portions are arranged at intervals in the predetermined direction.
 前記プレート式熱交換器では、
 前記分配流路は、前記中空部と連通する開口部と、前記筒状壁の周方向に沿って延びると共に前記開口部と前記分配部とを接続する接続流路と、を含んでもよい。
In the plate heat exchanger,
The distribution flow path may include an opening communicating with the hollow portion and a connection flow path extending along the circumferential direction of the tubular wall and connecting the opening and the distribution portion.
 また、前記プレート式熱交換器では、
 前記分配部は、前記中空部と連通して該中空部から該分配部に前記第一流体を流入させる分配部入口を含み、
 前記分配器は、前記筒状壁の前記中空部における前記分配部入口と対応する位置に配置される方向変更部材を有し、
 前記方向変更部材は、前記中空部と前記分配部入口とを連通させ且つ前記第一流体が流通可能な内部空間を有し、該内部空間を通過させることによって前記第一流体の流れ方向を前記分配部入口位置における前記筒状壁の厚さ方向に沿った向きにしてもよい。
Further, in the plate heat exchanger,
The distribution unit includes a distribution unit inlet that communicates with the hollow portion and allows the first fluid to flow into the distribution unit from the hollow portion.
The distributor has a direction changing member arranged at a position corresponding to the inlet of the distributor in the hollow portion of the tubular wall.
The direction changing member has an internal space in which the hollow portion and the inlet of the distribution portion are communicated with each other and through which the first fluid can flow, and the flow direction of the first fluid is changed by passing through the internal space. The orientation may be along the thickness direction of the tubular wall at the distribution portion inlet position.
 また、前記プレート式熱交換器では、
 前記熱交換器本体は、前記連通空間と前記第一流路との境界位置に、該連通空間から該第一流路に前記第一流体が流入するときに通過する開口部を有し、
 各開口部では、前記熱交換器本体において前記第一流体が流通したときに前記連通空間と前記第一流路との間で差圧が生じてもよい。
Further, in the plate heat exchanger,
The heat exchanger main body has an opening at a boundary position between the communication space and the first flow path, through which the first fluid passes when the first fluid flows from the communication space into the first flow path.
At each opening, a differential pressure may be generated between the communication space and the first flow path when the first fluid flows through the heat exchanger body.
 また、本発明に係るプレート式熱交換器用の分配器は、
 それぞれが所定方向と直交する面方向に広がる複数の伝熱プレートを有し、これら複数の伝熱プレートが前記所定方向に重ね合わされていることによって第一流体を流通させる第一流路と第二流体を流通させる第二流路とが各伝熱プレートを境に交互に並ぶように複数の第一流路と少なくとも一つの第二流路とが形成されている熱交換器本体を備えるプレート式熱交換器において、前記複数の伝熱プレートのうちの連続して並ぶ二つ以上の伝熱プレートのそれぞれが有する貫通孔が前記所定方向に連なることによって形成される連通空間であって各第一流路と連通する連通空間に配置することにより、前記第一流体を前記複数の第一流路に分配可能なプレート熱交換器用の分配器であって、
 前記連通空間に配置されたときに、前記所定方向に延び且つ前記プレート式熱交換器の外部から供給される前記第一流体が流通する中空部を囲む筒状壁を備え、
 前記筒状壁は、該筒状壁の厚さ方向に重なる複数の筒状部を備えると共に、前記複数の筒状部のうちの前記厚さ方向に連続して重なる二つ以上の筒状部内に前記第一流体が流通可能な分配流路を有し、
 前記分配流路は、
  前記中空部から該分配流路に流入した前記第一流体を前記所定方向の一方と他方とに分配する分配部であって、前記第一流体が前記一方に流出する一方側分配部出口及び前記第一流体が前記他方に流出する他方側分配部出口を含む分配部と、
  前記一方側分配部出口又は前記他方側分配部出口と直接又は間接にそれぞれ連通すると共に、少なくとも前記厚さ方向における最も外側の筒状部を貫通することで前記連通空間又は前記第一流路と連通可能な複数の流出部と、を含み、
 前記複数の流出部は、前記所定方向に間隔をあけて配置されている。
Further, the distributor for the plate heat exchanger according to the present invention is
Each has a plurality of heat transfer plates extending in a plane direction orthogonal to a predetermined direction, and the plurality of heat transfer plates are superposed in the predetermined direction to allow the first fluid to flow through the first flow path and the second fluid. A plate-type heat exchange including a heat exchanger main body in which a plurality of first flow paths and at least one second flow path are formed so that the second flow paths for circulating the fluid are alternately arranged with each heat transfer plate as a boundary. In the vessel, it is a communication space formed by connecting through holes of each of two or more heat transfer plates that are continuously arranged among the plurality of heat transfer plates in the predetermined direction, and is a communication space formed with each first flow path. A distributor for a plate heat exchanger capable of distributing the first fluid to the plurality of first flow paths by arranging the first fluid in a communicating space.
A tubular wall that surrounds a hollow portion that extends in the predetermined direction and through which the first fluid is supplied from the outside of the plate heat exchanger when arranged in the communication space is provided.
The tubular wall includes a plurality of tubular portions that overlap in the thickness direction of the tubular wall, and in two or more tubular portions that continuously overlap in the thickness direction of the plurality of tubular portions. Has a distribution channel through which the first fluid can flow.
The distribution channel is
A distribution unit that distributes the first fluid that has flowed into the distribution flow path from the hollow portion to one and the other in the predetermined direction, and is an outlet of the one-side distribution unit through which the first fluid flows out to the one and the said. A distributor including the outlet of the other side where the first fluid flows out to the other,
It communicates directly or indirectly with the outlet of the one-side distribution section or the outlet of the other-side distribution section, and communicates with the communication space or the first flow path by penetrating at least the outermost tubular portion in the thickness direction. Including multiple outflows possible
The plurality of outflow portions are arranged at intervals in the predetermined direction.
図1は、本実施形態に係るプレート式熱交換器の斜視図である。FIG. 1 is a perspective view of a plate heat exchanger according to the present embodiment. 図2は、前記プレート式熱交換器の正面図である。FIG. 2 is a front view of the plate heat exchanger. 図3は、構成を一部省略した前記プレート式熱交換器の分解斜視図である。FIG. 3 is an exploded perspective view of the plate heat exchanger with a part omitted. 図4は、図2のIV-IV位置における断面の模式図である。FIG. 4 is a schematic cross-sectional view at the IV-IV position of FIG. 図5は、図4において分配器を取り外した状態の図である。FIG. 5 is a diagram showing a state in which the distributor is removed in FIG. 図6は、図2のVI-VI位置における断面の模式図である。FIG. 6 is a schematic cross-sectional view at the VI-VI position of FIG. 図7は、前記分配器の斜視図である。FIG. 7 is a perspective view of the distributor. 図8は、前記分配器の分解斜視図である。FIG. 8 is an exploded perspective view of the distributor. 図9は、前記分配器を流入開口の開口方向から見た図である。FIG. 9 is a view of the distributor as viewed from the opening direction of the inflow opening. 図10は、図9のX-X位置における断面図である。FIG. 10 is a cross-sectional view taken along the line XX of FIG. 図11は、図9のXI-XI位置における断面図である。FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG. 図12は、前記分配器の外側筒状部の斜視図である。FIG. 12 is a perspective view of the outer tubular portion of the distributor. 図13は、前記分配器の分配流路を説明するための図である。FIG. 13 is a diagram for explaining the distribution flow path of the distributor. 図14は、図13の一部拡大図である。FIG. 14 is a partially enlarged view of FIG. 図15は、前記分配流路を説明するための図である。FIG. 15 is a diagram for explaining the distribution flow path. 図16Aは、分配器から流出した第一流体が第一流路に流入する経路を示す模式図である。FIG. 16A is a schematic view showing a path through which the first fluid flowing out of the distributor flows into the first flow path. 図16Bは、上流端開口部の開口面積を設定する際に用いられる第一流体の流路断面積を説明するための概念図である。FIG. 16B is a conceptual diagram for explaining the flow path cross-sectional area of the first fluid used when setting the opening area of the upstream end opening. 図17は、他実施形態に係る分配器の流入開口の開口方向から見た図である。FIG. 17 is a view seen from the opening direction of the inflow opening of the distributor according to the other embodiment. 図18は、図17のXVIII-XVIII位置の断面図である。FIG. 18 is a cross-sectional view of the XVIII-XVIII position of FIG. 図19は、前記分配器の分配流路を説明するための図である。FIG. 19 is a diagram for explaining a distribution flow path of the distributor. 図20は、方向変更部材の斜視図である。FIG. 20 is a perspective view of the direction changing member. 図21は、方向変更部材の斜視図である。FIG. 21 is a perspective view of the direction changing member. 図22は、方向変更部材の配置状態を説明するための断面図である。FIG. 22 is a cross-sectional view for explaining the arrangement state of the direction changing member. 図23は、複数の分配器の設置状態を説明するための図である。FIG. 23 is a diagram for explaining an installation state of a plurality of distributors. 図24は、他実施形態に係る分配流路の構成を説明するための一部拡大断面図である。FIG. 24 is a partially enlarged cross-sectional view for explaining the configuration of the distribution flow path according to the other embodiment. 図25は、他実施形態に係る分配流路の流入開口の開口方向を説明するための一部拡大断面図である。FIG. 25 is a partially enlarged cross-sectional view for explaining the opening direction of the inflow opening of the distribution flow path according to the other embodiment. 図26は、従来のプレート式熱交換器の正面図である。FIG. 26 is a front view of a conventional plate heat exchanger. 図27は、図26のXXVII-XXVII位置の断面の模式図である。FIG. 27 is a schematic cross-sectional view of the position of XXVII-XXVII in FIG. 図28は、図26のXXVIII-XXVIII位置の断面の模式図である。FIG. 28 is a schematic cross-sectional view of the XXVIII-XXVIII positions of FIG.
 以下、本発明の一実施形態について、図1~図16を参照しつつ説明する。 Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 16.
 本実施形態に係るプレート式熱交換器(以下、単に「熱交換器」とも称する。)は、第一流体を第二流体と熱交換させることによって蒸発又は凝縮させる。この熱交換器は、図1~図6に示すように、それぞれが所定方向と直交する面方向に広がる複数の伝熱プレート21を有する熱交換器本体2と、熱交換器本体2の内部に配置されて第一流体Aを分配する分配器5と、を備える。尚、図3~図6においては、構成を理解し易くするために、伝熱プレート21は、凹凸が省略されて模式的に記載されている。 The plate type heat exchanger according to the present embodiment (hereinafter, also simply referred to as "heat exchanger") evaporates or condenses the first fluid by exchanging heat with the second fluid. As shown in FIGS. 1 to 6, the heat exchanger has a heat exchanger main body 2 having a plurality of heat transfer plates 21 each extending in a plane direction orthogonal to a predetermined direction, and inside the heat exchanger main body 2. A distributor 5 that is arranged to distribute the first fluid A is provided. In addition, in FIGS. 3 to 6, in order to make the structure easy to understand, the heat transfer plate 21 is schematically described with the unevenness omitted.
 熱交換器本体2は、所定方向に重ね合わされている複数(本実施形態においては、四つ以上)の伝熱プレート21と、伝熱プレート21間のそれぞれに配置される複数のガスケット22と、重ね合わされている複数の伝熱プレート21(伝熱プレート群21A)を所定方向の両側から挟み込む一対のエンドプレート23、24と、を有する。この熱交換器本体2では、第一流体Aが流れる第一流路Ra又は第二流体Bが流れる第二流路Rbが所定方向に重ね合わされている複数の伝熱プレート21の各伝熱プレート間に形成されている。本実施形態の伝熱プレート21は、矩形状のプレートである。 The heat exchanger main body 2 includes a plurality of heat transfer plates 21 (in this embodiment, four or more) stacked in a predetermined direction, and a plurality of gaskets 22 arranged between the heat transfer plates 21. It has a pair of end plates 23 and 24 that sandwich a plurality of superposed heat transfer plates 21 (heat transfer plate group 21A) from both sides in a predetermined direction. In the heat exchanger main body 2, between the heat transfer plates of a plurality of heat transfer plates 21 in which the first flow path Ra through which the first fluid A flows or the second flow path Rb through which the second fluid B flows are overlapped in a predetermined direction. Is formed in. The heat transfer plate 21 of the present embodiment is a rectangular plate.
 尚、以下の説明では、伝熱プレート21の重ね合わせ方向(前記所定方向)を直交座標系におけるX軸方向とし、伝熱プレート21の短辺方向を直交座標系のY軸方向とし、伝熱プレート21の長辺方向を直交座標系のZ軸方向とする。 In the following description, the overlapping direction of the heat transfer plates 21 (the predetermined direction) is defined as the X-axis direction in the Cartesian coordinate system, and the short side direction of the heat transfer plate 21 is defined as the Y-axis direction in the Cartesian coordinate system. The long side direction of the plate 21 is the Z-axis direction of the Cartesian coordinate system.
 複数の伝熱プレート21のうちのX軸方向に連続して並ぶ二つ以上の伝熱プレート21のそれぞれは、X軸方向から見て重なる位置に貫通孔(第一孔211)を有する。これら連続して並ぶ二つ以上の伝熱プレート21は、各第一孔211がX軸方向に連なることによって第一流路Raと連通する連通空間Ra1を形成する(図5参照)。本実施形態の熱交換器本体2では、各伝熱プレート21が第一孔211を有し、連通空間Ra1が、伝熱プレート群21AのX軸方向における一端から他端まで延びている。 Each of the two or more heat transfer plates 21 that are continuously arranged in the X-axis direction among the plurality of heat transfer plates 21 has through holes (first holes 211) at overlapping positions when viewed from the X-axis direction. The two or more heat transfer plates 21 arranged in succession form a connected space Ra1 in which the first holes 211 are connected in the X-axis direction to communicate with the first flow path Ra (see FIG. 5). In the heat exchanger main body 2 of the present embodiment, each heat transfer plate 21 has a first hole 211, and the communication space Ra1 extends from one end to the other end of the heat transfer plate group 21A in the X-axis direction.
 具体的に、各伝熱プレート21は、金属製のプレートであり、Z軸方向に長尺な矩形状である。X軸方向における伝熱プレート21の各面には、多数の凸部及び凹部が形成されている。本実施形態の凸部は、Y-Z面(Y軸方向とZ軸方向とを含む面)に沿って延びることで凸条を構成している。また、凹部も、Y-Z面に沿って延びることで凹条を構成している。 Specifically, each heat transfer plate 21 is a metal plate and has a long rectangular shape in the Z-axis direction. A large number of protrusions and recesses are formed on each surface of the heat transfer plate 21 in the X-axis direction. The convex portion of the present embodiment constitutes a convex strip by extending along a YZ plane (a plane including the Y-axis direction and the Z-axis direction). Further, the recess also forms a recess by extending along the YY plane.
 この伝熱プレート21は、平坦な金属プレートがプレス加工されることによって形成されている。このため、X軸方向における伝熱プレート21の一方の面の凸条(凸部)と他方の面の凹条(凹部)とが伝熱プレート21の同じ部位に形成されている。即ち、伝熱プレート21の該部位において、前記一方の面が凸条(凸部)211を構成している場合には、前記他方の面が凹条(凹部)212を構成し、前記一方の面が凹条(凹部)を構成している場合には、前記他方の面が凸条(凸部)を構成している。 The heat transfer plate 21 is formed by pressing a flat metal plate. Therefore, a convex portion (convex portion) on one surface of the heat transfer plate 21 and a concave portion (recessed portion) on the other surface are formed at the same portion of the heat transfer plate 21 in the X-axis direction. That is, in the portion of the heat transfer plate 21, when one surface constitutes a convex (convex) 211, the other surface constitutes a concave (concave) 212, and the one surface When the surface constitutes a concave (recess), the other surface constitutes a convex (convex).
 また、各伝熱プレート21は、四隅に貫通孔(第一孔211、第二孔212、第三孔213、第四孔214)を有する(図3参照)。本実施形態の各貫通孔211、212、213、214のそれぞれは、丸孔である。また、これら第一孔211、第二孔212、第三孔213、及び第四孔214の直径(孔径)は同じである。 Further, each heat transfer plate 21 has through holes (first hole 211, second hole 212, third hole 213, fourth hole 214) at four corners (see FIG. 3). Each of the through holes 211, 212, 213, and 214 of the present embodiment is a round hole. Further, the diameters (hole diameters) of the first hole 211, the second hole 212, the third hole 213, and the fourth hole 214 are the same.
 ガスケット22は、伝熱プレート21間に挟み込まれて各伝熱プレート21と密接することで、伝熱プレート21間に第一流体A又は第二流体Bが流れる流路等を画定すると共に、該流路等の液密性を確保する。このガスケット22は、少なくとも一つの無端環状の部位を有する。 The gasket 22 is sandwiched between the heat transfer plates 21 and is in close contact with each heat transfer plate 21 to define a flow path or the like through which the first fluid A or the second fluid B flows between the heat transfer plates 21. Ensure liquidtightness of the flow path, etc. The gasket 22 has at least one endless annular portion.
 一対のエンドプレート23、24のそれぞれは、伝熱プレート21と対応した形状の板状部材である。これら一対のエンドプレート23、24は、伝熱プレート群21A、即ち、重ね合わされた複数(本実施形態の例では、200枚)の伝熱プレート21を強固に挟み込むため、強度が十分に確保された厚板状の部材である。これら一対のエンドプレート23、24のうちの一方のエンドプレート23は、伝熱プレート21の各貫通孔(第一孔211、第二孔212、第三孔213、第四孔214)と対応する位置に貫通孔231、232、233、234を有する。本実施形態の一対のエンドプレート23、24のそれぞれは、矩形板状である。そして、一方のエンドプレート23は、四隅に貫通孔231、232、233、234を有する。 Each of the pair of end plates 23 and 24 is a plate-shaped member having a shape corresponding to the heat transfer plate 21. Since these pair of end plates 23 and 24 firmly sandwich the heat transfer plate group 21A, that is, a plurality of stacked heat transfer plates 21 (200 in the example of the present embodiment), sufficient strength is ensured. It is a thick plate-shaped member. One of the pair of end plates 23, 24 corresponds to each through hole (first hole 211, second hole 212, third hole 213, fourth hole 214) of the heat transfer plate 21. It has through holes 231, 232, 233, 234 in position. Each of the pair of end plates 23 and 24 of the present embodiment has a rectangular plate shape. And one end plate 23 has through holes 231, 232, 233, 234 at four corners.
 以上の各構成21、22、23、24を有する熱交換器本体2では、隣り合う伝熱プレート21間のそれぞれにガスケット22が挟み込まれるように複数の伝熱プレート21が重ね合わされて伝熱プレート群21Aが構成される。また、熱交換器本体2では、一対のエンドプレート23、24が伝熱プレート群21AをX軸方向の外側から挟み込んだ状態で長ボルト25によってボルト締結されている。これにより、熱交換器本体2において、隣り合う伝熱プレート21の凸条同士が交差衝合すると共にガスケット22が挟み込まれている各伝熱プレート21に密接する。その結果、伝熱プレート21間等に液密性が確保された領域が形成される。この液密性が確保された領域は、第一流路Ra、第二流路Rb、連通空間Ra1等の第一流体A又は第二流体Bの流れる領域である。前記領域についての詳細は、以下の通りである。 In the heat exchanger main body 2 having each of the above configurations 21, 22, 23, 24, a plurality of heat transfer plates 21 are superposed on each other so that the gasket 22 is sandwiched between the adjacent heat transfer plates 21. Group 21A is composed. Further, in the heat exchanger main body 2, the pair of end plates 23 and 24 are bolted by long bolts 25 in a state where the heat transfer plate group 21A is sandwiched from the outside in the X-axis direction. As a result, in the heat exchanger main body 2, the protrusions of the adjacent heat transfer plates 21 intersect with each other and come into close contact with each heat transfer plate 21 in which the gasket 22 is sandwiched. As a result, a region where liquidtightness is ensured is formed between the heat transfer plates 21 and the like. The region where the liquidtightness is ensured is a region through which the first fluid A or the second fluid B flows, such as the first flow path Ra, the second flow path Rb, and the communication space Ra1. Details of the region are as follows.
 図4~図6に示すように、熱交換器本体2において、第一流路Ra又は第二流路Rbが隣り合う伝熱プレート21間のそれぞれに形成されている。これら第一流路Raと第二流路Rbとは、伝熱プレート21を境にしてX軸方向に交互に並んでいる。即ち、熱交換器本体2は、複数の第一流路Raと、少なくとも一つの第二流路Rbと、を有する。本実施形態の熱交換器本体2では、第一流体Aが、第一流路RaをZ軸方向の一方(図4における上方)に向けて流れ、第二流体Bが、第二流路RbをZ軸方向の他方(図6における下方)に向けて流れる。 As shown in FIGS. 4 to 6, in the heat exchanger main body 2, the first flow path Ra or the second flow path Rb is formed between the adjacent heat transfer plates 21. The first flow path Ra and the second flow path Rb are alternately arranged in the X-axis direction with the heat transfer plate 21 as a boundary. That is, the heat exchanger main body 2 has a plurality of first flow paths Ra and at least one second flow path Rb. In the heat exchanger main body 2 of the present embodiment, the first fluid A flows through the first flow path Ra toward one side in the Z-axis direction (upper in FIG. 4), and the second fluid B flows through the second flow path Rb. It flows toward the other side in the Z-axis direction (downward in FIG. 6).
 また、熱交換器本体2において、第一孔211がX軸方向に連なることで、各第一流路Raと連通し且つ分配器5が配置される連通空間Ra1が形成される。この連通空間Ra1は、伝熱プレート群21AにおけるX軸方向の一方の端から他方の端まで延びている。連通空間Ra1のX軸方向の一方(図5における左方)の端は、一方のエンドプレート23の貫通孔231を通じて外部空間と連通し、X軸方向の他方(図5における右方)の端は、他方のエンドプレート24又は該エンドプレート24の直前の伝熱プレート(貫通孔211、212、213、214を有しない伝熱プレート)に当接している。 Further, in the heat exchanger main body 2, the first holes 211 are connected in the X-axis direction to form a connected space Ra1 that communicates with each first flow path Ra and in which the distributor 5 is arranged. This communication space Ra1 extends from one end in the X-axis direction to the other end in the heat transfer plate group 21A. One end (left in FIG. 5) of the communication space Ra1 in the X-axis direction communicates with the external space through the through hole 231 of one end plate 23, and the other end (right in FIG. 5) in the X-axis direction. Is in contact with the other end plate 24 or a heat transfer plate immediately preceding the end plate 24 (a heat transfer plate having no through holes 211, 212, 213, 214).
 また、熱交換器本体2において、第二孔212がX軸方向に連なることで、各第一流路Raと連通し且つ各第一流路Raから流出する第一流体Aを合流させて伝熱プレート群21AのX軸方向の一方の端まで案内する第一流体排出路Ra2が形成される。この第一流体排出路Ra2は、伝熱プレート群21AにおけるX軸方向の一方の端から他方の端まで延びている。第一流体排出路Ra2のX軸方向の一方の端は、一方のエンドプレート23の貫通孔232を通じて外部空間と連通し、X軸方向の他方の端は、他方のエンドプレート24又は該エンドプレート24の直前の伝熱プレートに当接している。 Further, in the heat exchanger main body 2, the second holes 212 are connected in the X-axis direction to communicate with each first flow path Ra and merge the first fluid A flowing out from each first flow path Ra to form a heat transfer plate. A first fluid discharge path Ra2 is formed that guides the group 21A to one end in the X-axis direction. The first fluid discharge path Ra2 extends from one end in the X-axis direction to the other end in the heat transfer plate group 21A. One end of the first fluid discharge path Ra2 in the X-axis direction communicates with the external space through the through hole 232 of one end plate 23, and the other end in the X-axis direction is the other end plate 24 or the end plate. It is in contact with the heat transfer plate immediately before 24.
 また、熱交換器本体2において、図6に示すように、第三孔213がX軸方向に連なることで、各第二流路Rbに連通し且つ外部から供給された第二流体Bを各第二流路Rbに流入させる第二流体供給路Rb1が形成される。この第二流体供給路Rb1は、伝熱プレート群21AにおけるX軸方向の一方の端から他方の端まで延びている。第二流体供給路Rb1のX軸方向の一方の端は、一方のエンドプレート23の貫通孔233を通じて外部空間と連通し、X軸方向の他方の端は、他方のエンドプレート24又は該エンドプレート24の直前の伝熱プレートに当接している。 Further, in the heat exchanger main body 2, as shown in FIG. 6, the third holes 213 are connected in the X-axis direction, so that the second fluid B communicating with each second flow path Rb and supplied from the outside is used. A second fluid supply path Rb1 that flows into the second flow path Rb is formed. The second fluid supply path Rb1 extends from one end in the X-axis direction of the heat transfer plate group 21A to the other end. One end of the second fluid supply path Rb1 in the X-axis direction communicates with the external space through the through hole 233 of one end plate 23, and the other end in the X-axis direction is the other end plate 24 or the end plate. It is in contact with the heat transfer plate immediately before 24.
 また、熱交換器本体2において、第四孔214がX軸方向に連なることで、各第二流路Rbに連通し且つ各第二流路Rbから流出する第二流体Bを合流させて伝熱プレート群21AのX軸方向の一方の端まで案内する第二流体排出路Rb2が形成される。この第二流体排出路Rb2は、伝熱プレート群21AにおけるX軸方向の一方の端から他方の端まで延びている。第二流体排出路Rb2のX軸方向の一方の端は、一方のエンドプレート23の貫通孔234を通じて外部空間と連通し、X軸方向の他方の端は、他方のエンドプレート24又は該エンドプレート24の直前の伝熱プレートに当接している。 Further, in the heat exchanger main body 2, the fourth hole 214 is connected in the X-axis direction so that the second fluid B that communicates with each second flow path Rb and flows out from each second flow path Rb joins and transmits. A second fluid discharge path Rb2 that guides the heat plate group 21A to one end in the X-axis direction is formed. The second fluid discharge path Rb2 extends from one end in the X-axis direction to the other end in the heat transfer plate group 21A. One end of the second fluid discharge path Rb2 in the X-axis direction communicates with the external space through the through hole 234 of one end plate 23, and the other end in the X-axis direction is the other end plate 24 or the end plate. It is in contact with the heat transfer plate immediately before 24.
 分配器5は、熱交換器本体2の外部から供給された第一流体Aを複数の第一流路Raのそれぞれに分配する。分配器5は、図3、図4、図7~図12に示すように、連通空間Ra1においてX軸方向に延び且つ熱交換器本体2の外部から供給される第一流体Aが流通する中空部Sを囲む筒状の壁(筒状壁)を有する。本実施形態の筒状壁は円筒形状であり、分配器5は、筒状壁のみによって構成されている。即ち、本実施形態の分配器(筒状壁)5は、円筒形状である。 The distributor 5 distributes the first fluid A supplied from the outside of the heat exchanger main body 2 to each of the plurality of first flow paths Ra. As shown in FIGS. 3, 4, 7 to 12, the distributor 5 is a hollow space extending in the X-axis direction in the communication space Ra1 and through which the first fluid A supplied from the outside of the heat exchanger body 2 flows. It has a tubular wall (cylindrical wall) surrounding the portion S. The tubular wall of the present embodiment has a cylindrical shape, and the distributor 5 is composed of only the tubular wall. That is, the distributor (cylindrical wall) 5 of the present embodiment has a cylindrical shape.
 また、分配器5は、径方向(筒状壁の厚さ方向)に重なる複数の筒状部50を有する。この分配器5は、複数の筒状部50のうちの径方向に連続して重なる少なくとも二つの筒状部50内に第一流体Aが流通可能な分配流路6を有する(図10及び図11参照)。 Further, the distributor 5 has a plurality of tubular portions 50 that overlap in the radial direction (thickness direction of the tubular wall). The distributor 5 has a distribution flow path 6 through which the first fluid A can flow in at least two tubular portions 50 that are continuously overlapped in the radial direction among the plurality of tubular portions 50 (FIGS. 10 and 10). 11).
 本実施形態の分配器5は、X方向において連通空間Ra1の一方の端から他方の端まで延びている。即ち、X軸方向における分配器5の一方の端は、一方のエンドプレート23の貫通孔231に位置し、X軸方向における分配器5の他方の端は、他方のエンドプレート24又は該エンドプレート24の直前の伝熱プレートに当接している。そして、分配器5の中空部Sは、一方のエンドプレート23の貫通孔231を通じて熱交換器本体2の外部空間と連通している。本実施形態の分配器5は、径方向に重なる二つの筒状部50(外側筒状部51、内側筒状部52)を有する。これら径方向に重なっている状態の二つの筒状部51、52内に分配流路6が形成されている。 The distributor 5 of the present embodiment extends from one end of the communication space Ra1 to the other end in the X direction. That is, one end of the distributor 5 in the X-axis direction is located in the through hole 231 of one end plate 23, and the other end of the distributor 5 in the X-axis direction is the other end plate 24 or the end plate. It is in contact with the heat transfer plate immediately before 24. The hollow portion S of the distributor 5 communicates with the external space of the heat exchanger main body 2 through the through hole 231 of one end plate 23. The distributor 5 of the present embodiment has two tubular portions 50 (outer tubular portion 51, inner tubular portion 52) that overlap in the radial direction. The distribution flow path 6 is formed in the two tubular portions 51 and 52 that overlap each other in the radial direction.
 外側筒状部51は、円筒形状の部材である。外側筒状部51の外径は、伝熱プレート21の第一孔211の直径より小さい。これにより、分配器5が連通空間Ra1に配置された状態において、外側筒状部51の外周面51aと各伝熱プレート21の第一孔211の開口周縁部との間に隙間Gが形成されている(図4参照)。尚、本実施形態の熱交換器1では、例えば、分配器5のX軸方向の端にフランジを設け、一方のエンドプレート23の貫通孔231の開口周縁部に該フランジを固定することによって前記隙間Gを維持している。 The outer tubular portion 51 is a cylindrical member. The outer diameter of the outer tubular portion 51 is smaller than the diameter of the first hole 211 of the heat transfer plate 21. As a result, in a state where the distributor 5 is arranged in the communication space Ra1, a gap G is formed between the outer peripheral surface 51a of the outer tubular portion 51 and the opening peripheral edge of the first hole 211 of each heat transfer plate 21. (See Fig. 4). In the heat exchanger 1 of the present embodiment, for example, a flange is provided at the end of the distributor 5 in the X-axis direction, and the flange is fixed to the opening peripheral edge of the through hole 231 of one end plate 23. The gap G is maintained.
 また、外側筒状部51は、複数の貫通孔511を有する。これら複数の貫通孔511のそれぞれは、分配流路6を流れた第一流体Aが分配器5の外側に流れ出す孔である。 Further, the outer tubular portion 51 has a plurality of through holes 511. Each of the plurality of through holes 511 is a hole through which the first fluid A flowing through the distribution flow path 6 flows out of the distributor 5.
 複数の貫通孔511は、分配流路6の下流端(流出部616:図14参照)と対応する位置に配置されている。これら複数の貫通孔511は、X軸方向に間隔をあけて配置されている。本実施形態の外側筒状部51では、Z軸方向の他方側の部位(図12における下方側の部位)において、X軸方向の全域に延びるように貫通孔511の列が形成されている。そして、外側筒状部51において、X軸方向に間隔をあけて並ぶ複数(図12に示す例では16個)の貫通孔511によって構成される貫通孔511の列が、周方向に間隔をあけて複数(図12に示す例では二列)配置されている。 The plurality of through holes 511 are arranged at positions corresponding to the downstream ends of the distribution flow path 6 (outflow portion 616: see FIG. 14). These plurality of through holes 511 are arranged at intervals in the X-axis direction. In the outer tubular portion 51 of the present embodiment, a row of through holes 511 is formed at a portion on the other side in the Z-axis direction (a portion on the lower side in FIG. 12) so as to extend over the entire area in the X-axis direction. Then, in the outer tubular portion 51, a row of through holes 511 composed of a plurality of through holes 511 (16 in the example shown in FIG. 12) arranged at intervals in the X-axis direction are spaced apart in the circumferential direction. A plurality of them (two rows in the example shown in FIG. 12) are arranged.
 内側筒状部52は、外側筒状部51の内側に配置される円筒形状の部材であり、外側筒状部51の内径に対応した外径を有する。この内側筒状部52は、分配流路6に応じた形状の溝521を外周面52aに有する。また、内側筒状部52は、内周面52bによって中空部Sを画定している(囲む)。また、内側筒状部52は、中空部Sと溝521内とを連通する流入開口53を有する。 The inner tubular portion 52 is a cylindrical member arranged inside the outer tubular portion 51, and has an outer diameter corresponding to the inner diameter of the outer tubular portion 51. The inner tubular portion 52 has a groove 521 having a shape corresponding to the distribution flow path 6 on the outer peripheral surface 52a. Further, the inner tubular portion 52 defines (surrounds) the hollow portion S by the inner peripheral surface 52b. Further, the inner tubular portion 52 has an inflow opening 53 that communicates the hollow portion S with the inside of the groove 521.
 以上の内側筒状部52が外側筒状部51の内側に配置される、即ち、外側筒状部51と内側筒状部52とが径方向に重なることにより、内側筒状部52の溝521における径方向外側の開口が外側筒状部51の内周面51bによって覆われる。この溝521と内周面51bとによって囲まれた空間(領域)が分配流路6として機能する。 The inner tubular portion 52 is arranged inside the outer tubular portion 51, that is, the outer tubular portion 51 and the inner tubular portion 52 overlap in the radial direction, so that the groove 521 of the inner tubular portion 52 The radial outer opening in the above is covered by the inner peripheral surface 51b of the outer tubular portion 51. The space (region) surrounded by the groove 521 and the inner peripheral surface 51b functions as the distribution flow path 6.
 分配流路6は、中空部Sから流入した第一流体Aを、少なくとも一回、X軸方向の一方と他方とに分配し、X軸方向に並ぶ複数の第一流路Raのそれぞれと対応する位置において分配器5から流出させる。 The distribution flow path 6 distributes the first fluid A flowing in from the hollow portion S to one and the other in the X-axis direction at least once, and corresponds to each of the plurality of first flow paths Ra arranged in the X-axis direction. Outflow from distributor 5 at position.
 この分配流路6は、図13~図15にも示すように、第一分配部(分配部)603と、複数の流出部616と、を含む。また、分配流路6は、流入開口部(開口部)601と、第一接続流路(接続流路)602と、を含む。第一分配部603は、分配流路6に流入した第一流体AをX軸方向の一方と他方とに分配する。複数の流出部616は、第一分配部603と直接又は間接にそれぞれ導通すると共に外側筒状部51を貫通することにより連通空間Ra1又は対応する第一流路Raとそれぞれ連通する。流入開口部601は、分配器5の中空部Sと連通する。第一接続流路602は、分配器5の周方向に沿って延びると共に、流入開口部601と第一分配部603とを接続する。 As shown in FIGS. 13 to 15, this distribution flow path 6 includes a first distribution unit (distribution unit) 603 and a plurality of outflow units 616. Further, the distribution flow path 6 includes an inflow opening (opening) 601 and a first connection flow path (connection flow path) 602. The first distribution unit 603 distributes the first fluid A flowing into the distribution flow path 6 to one and the other in the X-axis direction. The plurality of outflow portions 616 communicate directly or indirectly with the first distribution portion 603 and communicate with the communication space Ra1 or the corresponding first flow path Ra by penetrating the outer tubular portion 51, respectively. The inflow opening 601 communicates with the hollow portion S of the distributor 5. The first connection flow path 602 extends along the circumferential direction of the distributor 5 and connects the inflow opening 601 and the first distribution unit 603.
 尚、図13は、分配器5を、流入開口53の中心と周方向の反対位置を通るようにX軸方向(分配器5の中心軸C方向:図7参照)に切断して展開した状態における分配流路6の経路パターンを示す図である。図14は、図13の一部拡大図である。図15は、分配器5を、内側筒状部52の流入開口53の中心を通るようにX軸方向に切断して展開した状態における分配流路6の経路パターンを示す図である。 Note that FIG. 13 shows a state in which the distributor 5 is cut and deployed in the X-axis direction (the central axis C direction of the distributor 5: see FIG. 7) so as to pass through a position opposite to the center of the inflow opening 53 in the circumferential direction. It is a figure which shows the path pattern of the distribution flow path 6 in. FIG. 14 is a partially enlarged view of FIG. FIG. 15 is a diagram showing a path pattern of the distribution flow path 6 in a state in which the distributor 5 is cut and expanded in the X-axis direction so as to pass through the center of the inflow opening 53 of the inner tubular portion 52.
 本実施形態の分配流路6は、該分配流路6の上流端から下流端に向けて順に、流入開口部601と、第一接続流路602と、第一分配部603と、第一分配流路604と、周方向分配部605と、周方向分配流路606と、第二分配部607と、第二分配流路608と、第二接続流路609と、第三分配部610と、第三分配流路611と、第三接続流路612と、第四分配部613と、第四分配流路614と、第四接続流路615と、流出部616と、を含む。 The distribution flow path 6 of the present embodiment has an inflow opening 601, a first connection flow path 602, a first distribution section 603, and a first distribution in order from the upstream end to the downstream end of the distribution flow path 6. The flow path 604, the circumferential distribution section 605, the circumferential distribution flow path 606, the second distribution section 607, the second distribution flow path 608, the second connection flow path 609, and the third distribution section 610. It includes a third distribution flow path 611, a third connection flow path 612, a fourth distribution section 613, a fourth distribution flow path 614, a fourth connection flow path 615, and an outflow section 616.
 この分配流路6は、図13において、流入開口53(流入開口部601)の中心を通って周方向に延びる仮想線C1を対象軸として略線対称である。また、分配流路6は、前記中心を通ってX軸方向に延びる仮想線C2を対象軸として略線対称である。このため、以下では、図13~図15を参照しつつ、流入開口部601から一つの流出部616までの第一流体Aの流通経路について詳細に説明する。 In FIG. 13, the distribution flow path 6 is substantially line-symmetric with respect to the virtual line C1 extending in the circumferential direction through the center of the inflow opening 53 (inflow opening 601). Further, the distribution flow path 6 is substantially line-symmetric with respect to the virtual line C2 extending in the X-axis direction through the center. Therefore, in the following, the distribution path of the first fluid A from the inflow opening 601 to one outflow portion 616 will be described in detail with reference to FIGS. 13 to 15.
 流入開口部601は、分配流路6の上流端であり、中空部Sと連通することで中空部Sを流れる第一流体Aを分配流路6内に流入させる。この流入開口部601は、内側筒状部52の流入開口53によって構成されている。本実施形態の流入開口部601は、X軸方向における分配器5の中央位置に配置されている。 The inflow opening 601 is an upstream end of the distribution flow path 6, and allows the first fluid A flowing through the hollow portion S to flow into the distribution flow path 6 by communicating with the hollow portion S. The inflow opening 601 is composed of an inflow opening 53 of an inner tubular portion 52. The inflow opening 601 of the present embodiment is arranged at the center position of the distributor 5 in the X-axis direction.
 第一接続流路602は、周方向に沿って延びることで流入開口部601と第一分配部603とを接続する。本実施形態の第一接続流路602は、流入開口部601から周方向の一方(図13における右方)と他方(図13における左方)とにそれぞれ延びている。即ち、二つの第一接続流路602が配置されている。 The first connection flow path 602 connects the inflow opening 601 and the first distribution section 603 by extending along the circumferential direction. The first connection flow path 602 of the present embodiment extends from the inflow opening 601 to one (right side in FIG. 13) and the other (left side in FIG. 13) in the circumferential direction, respectively. That is, two first connection flow paths 602 are arranged.
 第一分配部603は、該第一分配部603に流入した第一流体AをX軸方向の一方(図13における上方)と他方(図13における下方)とに分配する。具体的に、第一分配部603は、流入開口部601に対して周方向の反対側に配置され、第一流体Aが流入する第一分配部入口(分配部入口)6031と、第一流体AがX軸方向の一方に流出する一方側出口(一方側分配部出口)6032と、第一流体AがX軸方向の他方に流出する他方側出口(他方側分配部出口)6033と、を含む。 The first distribution unit 603 distributes the first fluid A flowing into the first distribution unit 603 to one (upper in FIG. 13) and the other (lower in FIG. 13) in the X-axis direction. Specifically, the first distribution unit 603 is arranged on the opposite side of the inflow opening 601 in the circumferential direction, and the first distribution unit inlet (distribution unit inlet) 6031 into which the first fluid A flows in and the first fluid One side outlet (one side distribution part outlet) 6032 where A flows out to one side in the X-axis direction, and the other side outlet (the other side distribution part outlet) 6033 where the first fluid A flows out to the other side in the X-axis direction. Including.
 本実施形態の第一分配部603は、流入開口部601から周方向の一方に延びる第一接続流路602と連通する第一分配部入口6031aと、流入開口部601から周方向の他方に延びる第一接続流路602と連通する第一分配部入口6031bと、を含む。即ち、第一分配部603は、二つの第一分配部入口6031a、6031bを含む。 The first distribution section 603 of the present embodiment extends from the inflow opening 601 to the first distribution section inlet 6031a communicating with the first connection flow path 602 extending in one direction in the circumferential direction and from the inflow opening 601 to the other in the circumferential direction. Includes a first distribution section inlet 6031b that communicates with the first connection flow path 602. That is, the first distribution unit 603 includes two first distribution unit inlets 6031a and 6031b.
 第一分配流路604は、第一分配部603からX軸方向の一方と他方とのそれぞれに延びている。即ち、一つの第一分配部603に対して一対の第一分配流路604が配置されている。具体的に、一対の第一分配流路604のうちの一方の第一分配流路604aは、第一分配部603の一方側出口6032からX軸方向の一方に延びている。また、一対の第一分配流路604のうちの他方の第一分配流路604bは、第一分配部603の他方側出口6033からX軸方向の他方に延びている。これら一方の第一分配流路604aと他方の第一分配流路604bとは、同じ長さである。 The first distribution flow path 604 extends from the first distribution unit 603 in each of one and the other in the X-axis direction. That is, a pair of first distribution flow paths 604 are arranged for one first distribution unit 603. Specifically, one of the first distribution flow paths 604 of the pair of first distribution flow paths 604 extends from one side outlet 6032 of the first distribution section 603 in one direction in the X-axis direction. Further, the other first distribution flow path 604b of the pair of first distribution flow paths 604 extends from the other side outlet 6033 of the first distribution section 603 to the other in the X-axis direction. One of the first distribution channels 604a and the other first distribution channel 604b have the same length.
 周方向分配部605は、第一分配流路604と連通し、該第一分配流路604から流入する第一流体Aを周方向の一方と他方とに分配する。具体的に、周方向分配部605は、第一分配部603とX軸方向に間隔をあけた位置に配置され、第一流体Aが流入する周方向分配部入口6051と、第一流体Aが周方向の一方に流出する一方側出口6052と、第一流体Aが周方向の他方に流出する他方側出口6053と、を含む。 The circumferential distribution unit 605 communicates with the first distribution flow path 604 and distributes the first fluid A flowing in from the first distribution flow path 604 to one and the other in the circumferential direction. Specifically, the circumferential distribution unit 605 is arranged at a position spaced apart from the first distribution unit 603 in the X-axis direction, and the circumferential distribution unit inlet 6051 into which the first fluid A flows in and the first fluid A are It includes a one-sided outlet 6052 that flows out to one of the circumferential directions and a other-sided outlet 6053 that the first fluid A flows out to the other in the circumferential direction.
 周方向分配流路606は、周方向分配部605から周方向の一方と他方とのそれぞれに延びている。即ち、一つの周方向分配部605に対して一対の周方向分配流路606が配置されている。具体的に、一対の周方向分配流路606のうちの一方の周方向分配流路606aは、周方向分配部605の一方側出口6052から周方向の一方に延びている。また、一対の周方向分配流路606のうちの他方の周方向分配流路606bは、周方向分配部605の他方側出口6053から周方向の他方に延びている。これら一方の周方向分配流路606aと他方の周方向分配流路606bとは、同じ長さである。 The circumferential distribution flow path 606 extends from the circumferential distribution unit 605 to one of the circumferential directions and the other. That is, a pair of circumferential distribution channels 606 are arranged for one circumferential distribution unit 605. Specifically, one of the pair of circumferential distribution channels 606, the circumferential distribution channel 606a, extends in one of the circumferential directions from one side outlet 6052 of the circumferential distribution section 605. Further, the other circumferential distribution flow path 606b of the pair of circumferential distribution flow paths 606 extends from the other side outlet 6053 of the circumferential distribution section 605 to the other in the circumferential direction. The one circumferential distribution flow path 606a and the other circumferential distribution flow path 606b have the same length.
 第二分配部607は、周方向分配流路606と連通し、該周方向分配流路606から流入する第一流体AをX軸方向の一方と他方とに分配する。具体的に、第二分配部607は、周方向分配部605と周方向に間隔をあけた位置に配置され、第一流体Aが流入する第二分配部入口6071と、第一流体AがX軸方向の一方に流出する一方側出口6072と、第一流体AがX軸方向の他方に流出する他方側出口6073と、を含む。 The second distribution unit 607 communicates with the circumferential distribution flow path 606 and distributes the first fluid A flowing in from the circumferential distribution flow path 606 to one and the other in the X-axis direction. Specifically, the second distribution unit 607 is arranged at a position spaced apart from the circumferential distribution unit 605 in the circumferential direction, and the second distribution unit inlet 6071 into which the first fluid A flows in and the first fluid A are X. It includes a one-sided outlet 6072 that flows out in one axial direction and a other-sided outlet 6073 in which the first fluid A flows out to the other in the X-axis direction.
 第二分配流路608は、第二分配部607からX軸方向の一方と他方とのそれぞれに延びている。即ち、一つの第二分配部607に対して一対の第二分配流路608が配置されている。具体的に、一対の第二分配流路608のうちの一方の第二分配流路608aは、第二分配部607の一方側出口6072からX軸方向の一方に延びている。また、一対の第二分配流路608のうちの他方の第二分配流路608bは、第二分配部607の他方側出口6073からX軸方向の他方に延びている。これら一方の第二分配流路608aと他方の第二分配流路608bとは、同じ長さである。 The second distribution flow path 608 extends from the second distribution section 607 to one side and the other side in the X-axis direction. That is, a pair of second distribution flow paths 608 are arranged for one second distribution unit 607. Specifically, one of the second distribution flow paths 608 of the pair of second distribution flow paths 608 extends from one side outlet 6072 of the second distribution section 607 in one direction in the X-axis direction. Further, the other second distribution flow path 608b of the pair of second distribution flow paths 608 extends from the other side outlet 6073 of the second distribution section 607 to the other in the X-axis direction. One of the second distribution channels 608a and the other second distribution channel 608b have the same length.
 第二接続流路609は、周方向に延びることで第二分配流路608と第三分配部610とを接続する。本実施形態の第二接続流路609は、第二分配流路608の下流端から周方向の他方に延びている。 The second connection flow path 609 extends in the circumferential direction to connect the second distribution flow path 608 and the third distribution section 610. The second connection flow path 609 of the present embodiment extends from the downstream end of the second distribution flow path 608 to the other in the circumferential direction.
 第三分配部610は、第二接続流路609と連通し、該第二接続流路609から流入する第一流体AをX軸方向の一方と他方とに分配する。具体的に、第三分配部610は、第二分配流路608の下流端と周方向に間隔をあけた位置に配置され、第一流体Aが流入する第三分配部入口6101と、第一流体AがX軸方向の一方に流出する一方側出口6102と、第一流体AがX軸方向の他方に流出する他方側出口6103と、を含む。 The third distribution unit 610 communicates with the second connection flow path 609 and distributes the first fluid A flowing in from the second connection flow path 609 to one and the other in the X-axis direction. Specifically, the third distribution unit 610 is arranged at a position spaced apart from the downstream end of the second distribution flow path 608 in the circumferential direction, and has the third distribution unit inlet 6101 into which the first fluid A flows and the first. It includes a one-sided outlet 6102 in which the fluid A flows out in one direction in the X-axis direction, and a other-side outlet 6103 in which the first fluid A flows out to the other in the X-axis direction.
 第三分配流路611は、第三分配部610からX軸方向の一方と他方とのそれぞれに延びている。即ち、一つの第三分配部610に対して一対の第三分配流路611が配置されている。具体的に、一対の第三分配流路611のうちの一方の第三分配流路611aは、第三分配部610の一方側出口6102からX軸方向の一方に延びている。また、一対の第三分配流路611のうちの他方の第三分配流路611bは、第三分配部610の他方側出口6103からX軸方向の他方に延びている。これら一方の第三分配流路611aと他方の第三分配流路611bとは、同じ長さである。 The third distribution flow path 611 extends from the third distribution section 610 to one side and the other side in the X-axis direction. That is, a pair of third distribution channels 611 are arranged for one third distribution section 610. Specifically, one of the pair of third distribution channels 611, the third distribution channel 611a, extends from one side outlet 6102 of the third distribution section 610 in one direction in the X-axis direction. Further, the other third distribution flow path 611b of the pair of third distribution flow paths 611 extends from the other side outlet 6103 of the third distribution section 610 to the other in the X-axis direction. One of the third distribution channels 611a and the other third distribution channel 611b have the same length.
 第三接続流路612は、周方向に延びることで第三分配流路611と第四分配部613とを接続する。本実施形態の第三接続流路612は、第三分配流路611の下流端から周方向の一方に延びている。 The third connection flow path 612 connects the third distribution flow path 611 and the fourth distribution section 613 by extending in the circumferential direction. The third connection flow path 612 of the present embodiment extends from the downstream end of the third distribution flow path 611 in one of the circumferential directions.
 第四分配部613は、第三接続流路612と連通し、該第三接続流路612から流入する第一流体AをX軸方向の一方と他方とに分配する。具体的に、第四分配部613は、第三分配流路611の下流端と周方向に間隔をあけた位置に配置され、第一流体Aが流入する第四分配部入口6131と、第一流体AがX軸方向の一方に流出する一方側出口6132と、第一流体AがX軸方向の他方に流出する他方側出口6133と、を含む。 The fourth distribution unit 613 communicates with the third connection flow path 612 and distributes the first fluid A flowing in from the third connection flow path 612 to one and the other in the X-axis direction. Specifically, the fourth distribution section 613 is arranged at a position spaced apart from the downstream end of the third distribution flow path 611 in the circumferential direction, and the fourth distribution section inlet 6131 into which the first fluid A flows, and the first It includes a one-sided outlet 6132 in which the fluid A flows out in one direction in the X-axis direction, and a other-side outlet 6133 in which the first fluid A flows out to the other in the X-axis direction.
 第四分配流路614は、第四分配部613からX軸方向の一方と他方とのそれぞれに延びている。即ち、一つの第四分配部613に対して一対の第四分配流路614が配置されている。具体的に、一対の第四分配流路614のうちの一方の第四分配流路614aは、第四分配部613の一方側出口6132からX軸方向の一方に延びている。また、一対の第四分配流路614のうちの他方の第四分配流路614bは、第四分配部613の他方側出口6133からX軸方向の他方に延びている。これら一方の第四分配流路614aと他方の第四分配流路614bとは、同じ長さである。 The fourth distribution flow path 614 extends from the fourth distribution section 613 in one side and the other side in the X-axis direction. That is, a pair of fourth distribution channels 614 are arranged for one fourth distribution section 613. Specifically, the fourth distribution flow path 614a of one of the pair of fourth distribution flow paths 614 extends from one side outlet 6132 of the fourth distribution section 613 in one direction in the X-axis direction. Further, the other fourth distribution flow path 614b of the pair of fourth distribution flow paths 614 extends from the other side outlet 6133 of the fourth distribution section 613 to the other in the X-axis direction. The fourth distribution flow path 614a on one side and the fourth distribution flow path 614b on the other side have the same length.
 第四接続流路615は、周方向に延びることで第四分配流路614と流出部616とを接続する。本実施形態の第四接続流路615は、第四分配流路614の下流端から周方向の他方に延びている。 The fourth connection flow path 615 extends in the circumferential direction to connect the fourth distribution flow path 614 and the outflow portion 616. The fourth connection flow path 615 of the present embodiment extends from the downstream end of the fourth distribution flow path 614 to the other in the circumferential direction.
 流出部616は、分配流路6の下流端であり、連通空間Ra1又は第一流路Raと連通することで分配流路6を流れた第一流体Aを連通空間Ra1又は第一流路Raに流出させる。この流出部616は、外側筒状部51の貫通孔511によって構成されている。 The outflow portion 616 is a downstream end of the distribution flow path 6, and the first fluid A flowing through the distribution flow path 6 flows out to the communication space Ra1 or the first flow path Ra by communicating with the communication space Ra1 or the first flow path Ra. Let me. The outflow portion 616 is composed of a through hole 511 of the outer tubular portion 51.
 本実施形態の分配流路6は、以上のように構成される流入開口部601から流出部616までの流通経路を、流出部616の数と同じ数(本実施形態の例では32本)備える。そして、分配流路6において、これら流出部616の数に応じた数の流通経路それぞれは、同じ距離である。 The distribution flow path 6 of the present embodiment includes the same number of distribution channels from the inflow opening 601 to the outflow portion 616 configured as described above (32 in the example of the present embodiment). .. Then, in the distribution channel 6, the number of distribution channels corresponding to the number of the outflow portions 616 are the same distance.
 以上のように構成される熱交換器1において、一方のエンドプレート23の貫通孔231に接続された配管等から貫通孔231を通じて分配器5の中空部Sに第一流体Aが供給されると、第一流体Aは、中空部SをX軸方向の他方に向けて流れる。そして、第一流体Aは、中空部SのX軸方向の中間部に配置された流入開口53(流入開口部601)に到達すると、該流入開口53(流入開口部601)から分配流路6に流入する。 In the heat exchanger 1 configured as described above, when the first fluid A is supplied to the hollow portion S of the distributor 5 through the through hole 231 from a pipe or the like connected to the through hole 231 of one end plate 23. , The first fluid A flows through the hollow portion S toward the other side in the X-axis direction. Then, when the first fluid A reaches the inflow opening 53 (inflow opening 601) arranged in the middle portion in the X-axis direction of the hollow portion S, the distribution flow path 6 is transmitted from the inflow opening 53 (inflow opening 601). Inflow to.
 分配流路6に流れ込んだ第一流体Aは、流入開口部601から周方向に延びる二つの第一接続流路602をそれぞれ流れて第一分配部603に流入し、該第一分配部603によってX軸方向の一方と他方とに分配される。 The first fluid A that has flowed into the distribution flow path 6 flows through the two first connection flow paths 602 extending in the circumferential direction from the inflow opening 601 and flows into the first distribution section 603, and is supplied by the first distribution section 603. It is distributed to one and the other in the X-axis direction.
 第一分配部603によって分配された第一流体Aは、該第一分配部603から延びる一対の第一分配流路604をそれぞれ流れ、第一分配部603に対してX軸方向の一方に間隔をあけて配置される周方向分配部605と、X軸方向の他方に間隔をあけて配置される周方向分配部605と、にそれぞれ流入し、各周方向分配部605によって周方向の一方と他方とに分配される。 The first fluid A distributed by the first distribution unit 603 flows through the pair of first distribution flow paths 604 extending from the first distribution unit 603, and is spaced from the first distribution unit 603 in one direction in the X-axis direction. The circumferential distribution unit 605 is arranged with a gap between the two, and the circumferential distribution unit 605 is arranged at a distance from the other in the X-axis direction. It is distributed to the other.
 各周方向分配部605によって分配された第一流体Aは、対応する周方向分配流路606をそれぞれ流れて該周方向分配流路606が接続される第二分配部607に流入し、該第二分配部607よってX軸方向の一方と他方とに分配される。 The first fluid A distributed by each circumferential distribution section 605 flows through the corresponding circumferential distribution flow path 606 and flows into the second distribution section 607 to which the circumferential distribution flow path 606 is connected, and the first fluid A flows into the second distribution section 607 to which the circumferential distribution flow path 606 is connected. The two distributors 607 distribute the fluid to one and the other in the X-axis direction.
 各第二分配部607によって分配された第一流体Aは、対応する第二分配流路608と該第二分配流路608から周方向に延びる第二接続流路609とを順に流れ、該第二分配部607に対してX軸方向の一方に間隔をあけた位置に配置される第三分配部610と、X軸方向の他方に間隔をあけた位置に配置される第三分配部610と、にそれぞれ流入し、各第三分配部610によってX軸方向の一方と他方とに分配される。 The first fluid A distributed by each second distribution unit 607 flows in order through the corresponding second distribution flow path 608 and the second connection flow path 609 extending in the circumferential direction from the second distribution flow path 608, and the first (Ii) A third distribution unit 610 arranged at a position spaced apart from the X-axis direction on one side, and a third distribution unit 610 arranged at a position spaced apart from the other side in the X-axis direction. , And are distributed to one and the other in the X-axis direction by each third distribution unit 610.
 続いて、各第三配部610によって分配された第一流体Aは、対応する第三分配流路611と該第三分配流路611から周方向に延びる第三接続流路612とを順に流れ、該第三分配部610に対してX軸方向の一方に間隔をあけた位置に配置される第四分配部613と、X軸方向の他方に間隔をあけた位置に配置される第四分配部613と、にそれぞれ流入し、各第四分配部613によってX軸方向の一方と他方とに分配される。 Subsequently, the first fluid A distributed by each third distribution section 610 flows in order through the corresponding third distribution flow path 611 and the third connection flow path 612 extending in the circumferential direction from the third distribution flow path 611. The fourth distribution unit 613 is arranged at a position spaced apart from the third distribution unit 610 on one side in the X-axis direction, and the fourth distribution unit is arranged at a position spaced apart from the other side in the X-axis direction. It flows into and from the unit 613, and is distributed to one and the other in the X-axis direction by each fourth distribution unit 613.
 さらに、各第四分配部613によって分配された第一流体Aは、対応する第四分配流路614と該第四分配流路614から周方向に延びる第四接続流路615とを順に流れ、該第四分配部613に対してX軸方向の一方に間隔をあけた位置に配置される流出部616と、X軸方向の他方に間隔をあけた位置に配置される流出部616とに到達する。 Further, the first fluid A distributed by each fourth distribution unit 613 flows in order through the corresponding fourth distribution flow path 614 and the fourth connection flow path 615 extending in the circumferential direction from the fourth distribution flow path 614. Reaching the outflow section 616 arranged at a position spaced apart from the fourth distribution section 613 in the X-axis direction and the outflow section 616 arranged at a position spaced apart from the other in the X-axis direction. To do.
 分配流路6の下流端である複数の流出部616のそれぞれに到達した第一流体Aは、該流出部616を構成する外側筒状部51の各貫通孔511を通じて分配器5の外側(連通空間Ra1)に流出する。 The first fluid A that has reached each of the plurality of outflow portions 616, which is the downstream end of the distribution flow path 6, is outside the distributor 5 (communication) through each through hole 511 of the outer tubular portion 51 constituting the outflow portion 616. It flows out to the space Ra1).
 このように、中空部SのX軸方向の中間部に設けられた流入開口53(流入開口部601)から分配流路6に流入した第一流体Aは、X軸方向の異なる位置に配置された第一分配部603、第二分配部607、第三分配部610、及び第四分配部613のそれぞれによってX軸方向の一方と他方とに分配されることで、分配ムラが抑えられた状態で連通空間Ra1のX軸方向の全域に第一流体Aが供給される。 In this way, the first fluid A that has flowed into the distribution flow path 6 from the inflow opening 53 (inflow opening 601) provided in the intermediate portion of the hollow portion S in the X-axis direction is arranged at different positions in the X-axis direction. Distributing unevenness is suppressed by being distributed to one and the other in the X-axis direction by each of the first distribution unit 603, the second distribution unit 607, the third distribution unit 610, and the fourth distribution unit 613. The first fluid A is supplied to the entire area of the communication space Ra1 in the X-axis direction.
 連通空間Ra1に流出した第一流体Aは、図16Aに示すように、分配器5の周囲の隙間(連通空間Ra1を画定する部材との間に形成される隙間)において該分配器5の外周面(外側筒状部51の外周面)51aに沿って流れ、X軸方向において該第一流体Aが流れ出た貫通孔511と近い位置の第一流路Raに流れ込む。 As shown in FIG. 16A, the first fluid A flowing out into the communication space Ra1 is the outer circumference of the distributor 5 in the gap around the distributor 5 (the gap formed between the member and the member defining the communication space Ra1). It flows along the surface (outer peripheral surface of the outer tubular portion 51) 51a, and flows into the first flow path Ra at a position close to the through hole 511 from which the first fluid A has flowed out in the X-axis direction.
 ここで、本実施形態の熱交換器本体2における各第一流路Raの上流端の開口、詳しくは、第一流路Raと連通空間Ra1との境界位置の開口であって、分配流路6を経て分配器5から連通空間Ra1に流れ出た第一流体Aが第一流路Raに流れ込む際に通過する開口部(上流端開口部)RaOは、熱交換器本体2内を第一流体Aが流通しているときに、連通空間Ra1と第一流路Raとの間で差圧が生じる大きさ(開口面積)に設定されている。具体的には、開口部RaOの開口面積が、各貫通孔511から流出して分配器5の外周面(外側筒状部の外周面)51aに沿って開口部RaOに向かう第一流体Aの流路(流路領域)を想定したときの該流路の断面積より小さい。より具体的には、開口部RaOの開口面積は、図16Bに示す、伝熱プレート21の第一孔211の内径βから分配器5の外径αを引いた寸法に、第一流路Raを規定する二つの伝熱プレート21間の寸法γを掛けた値(流路断面積:図16Bにおけるドットで示す領域の面積)より小さい。本実施形態の開口部RaOでは、X軸方向の開口幅を、第一流路Raを規定する二つの伝熱プレート21間の寸法γより小さくする(好ましくは、前記伝熱プレート21間の寸法γの半分(即ち、γ/2)より小さくする)ことで、開口部RaOの開口面積を前記流路断面積より小さくし、これにより、前記差圧を生じさせている。尚、前記差圧は、第一流路Ra内の圧力より連通空間Ra1内の圧力が高くなる状態である。 Here, the opening at the upstream end of each first flow path Ra in the heat exchanger main body 2 of the present embodiment, specifically, the opening at the boundary position between the first flow path Ra and the communication space Ra 1, the distribution flow path 6 is provided. The first fluid A flows through the heat exchanger body 2 at the opening (upstream end opening) RaO that the first fluid A that has flowed out from the distributor 5 into the connected space Ra1 flows into the first flow path Ra. The size (opening area) at which a differential pressure is generated between the communication space Ra1 and the first flow path Ra is set. Specifically, the opening area of the opening RaO flows out from each through hole 511 and flows toward the opening RaO along the outer peripheral surface (outer peripheral surface of the outer tubular portion) 51a of the distributor 5. It is smaller than the cross-sectional area of the flow path when the flow path (flow path area) is assumed. More specifically, the opening area of the opening RaO is the size obtained by subtracting the outer diameter α of the distributor 5 from the inner diameter β of the first hole 211 of the heat transfer plate 21 as shown in FIG. 16B. It is smaller than the value obtained by multiplying the dimension γ between the two specified heat transfer plates 21 (flow path cross-sectional area: the area of the region indicated by the dots in FIG. 16B). In the opening RaO of the present embodiment, the opening width in the X-axis direction is made smaller than the dimension γ between the two heat transfer plates 21 that define the first flow path Ra (preferably, the dimension γ between the heat transfer plates 21). The opening area of the opening RaO is made smaller than the cross-sectional area of the flow path by making it smaller than half (that is, γ / 2), thereby causing the differential pressure. The differential pressure is a state in which the pressure in the communication space Ra1 is higher than the pressure in the first flow path Ra.
 このため、分配器5から流出した第一流体Aが、分配器5の周囲の隙間に溜まり、各第一流路Raの上流端開口部RaOに対して略一定の圧力がかかった状態で第一流体Aが各第一流路Raに流れ込む。このため、各第一流路Raに流れ込む第一流体Aの流入量の偏り(ムラ)が抑えられる。 Therefore, the first fluid A flowing out of the distributor 5 collects in the gap around the distributor 5, and the first fluid A is in a state where a substantially constant pressure is applied to the upstream end opening RaO of each first flow path Ra. The fluid A flows into each first flow path Ra. Therefore, the unevenness of the inflow amount of the first fluid A flowing into each first flow path Ra is suppressed.
 各第一流路Raに流れ込んだ第一流体Aは、第一流路RaをZ軸方向の一方に向けて流れた後、第一流体排出路Ra2に流出する。そして、これら各第一流路Raから流出した第一流体Aは、第一流体排出路Ra2においてそれぞれ合流しつつ、第一流体排出路Ra2を流れて熱交換器本体2の外部に排出される。 The first fluid A that has flowed into each first flow path Ra flows through the first flow path Ra in one direction in the Z-axis direction, and then flows out to the first fluid discharge path Ra2. Then, the first fluid A flowing out of each of the first flow paths Ra flows through the first fluid discharge path Ra 2 while merging in the first fluid discharge path Ra 2, and is discharged to the outside of the heat exchanger main body 2.
 これに対し、一方のエンドプレート23の貫通孔233に接続された配管等から第二流体供給路Rb1に第二流体Bが供給されると、第二流体Bは、第二流体供給路Rb1を通って複数の第二流路Rbのそれぞれに流入する。そして、第二流体Bは、各第二流路RbをZ軸方向の他方に向けて流れた後、第二流体排出路Rb2に流出する。続いて、これら各第二流路Rbから流出した第二流体Bは、第二流体排出路Rb2においてそれぞれ合流しつつ、第二流体排出路Rb2を流れて外部に排出される。 On the other hand, when the second fluid B is supplied to the second fluid supply path Rb1 from a pipe or the like connected to the through hole 233 of one end plate 23, the second fluid B connects the second fluid supply path Rb1. It flows through each of the plurality of second flow paths Rb. Then, the second fluid B flows through each second flow path Rb toward the other in the Z-axis direction, and then flows out to the second fluid discharge path Rb2. Subsequently, the second fluid B flowing out from each of the second flow paths Rb flows through the second fluid discharge path Rb2 and is discharged to the outside while merging in the second fluid discharge path Rb2.
 熱交換器1では、以上のように第一流体Aが第一流路Raを流通すると共に第二流体Bが第二流路Rbを流通することにより、第一流路Raと第二流路Rbとを区画する伝熱プレート21を介して第一流体Aと第二流体Bとが熱交換を行い、第一流体Aが蒸発又は凝縮する。 In the heat exchanger 1, the first fluid A flows through the first flow path Ra and the second fluid B flows through the second flow path Rb as described above, so that the first flow path Ra and the second flow path Rb The first fluid A and the second fluid B exchange heat through the heat transfer plate 21 that partitions the first fluid A, and the first fluid A evaporates or condenses.
 以上の熱交換器1によれば、熱交換器本体2の外部から分配器5の中空部Sに供給された第一流体Aが複数の流出部616から流出して各第一流路Raに到達するまでの間に分配流路6の分配部603、607、610、613によってX軸方向の一方と他方とにそれぞれ分配される構成である。このため、流通経路の距離が第一流体の入口から離れた第一流路ほど大きくなる従来のプレート式熱交換器(図27参照)に比べ、中空部Sの入口から各第一流路Raまでの第一流体Aの流通経路同士の距離の差が抑えられる。これにより、第一流体Aの熱交換器本体2への入口からの流通経路同士の距離の差に(流通抵抗)に起因する各第一流路Raへの第一流体Aの分配ムラ(即ち、複数の第一流路Raに対する第一流体Aの分配ムラ)が抑えられる。 According to the above heat exchanger 1, the first fluid A supplied from the outside of the heat exchanger main body 2 to the hollow portion S of the distributor 5 flows out from the plurality of outflow portions 616 and reaches each first flow path Ra. The configuration is such that the distribution channels 603, 607, 610, and 613 distribute the fluid to one and the other in the X-axis direction, respectively. Therefore, compared to the conventional plate heat exchanger (see FIG. 27) in which the distance of the flow path becomes larger as the distance of the first flow path is farther from the inlet of the first fluid, the distance from the inlet of the hollow portion S to each first flow path Ra. The difference in distance between the distribution paths of the first fluid A is suppressed. As a result, uneven distribution of the first fluid A to each first flow path Ra due to the difference in distance between the flow paths from the inlet of the first fluid A to the heat exchanger main body 2 (flow resistance) (that is, that is). Distribution unevenness of the first fluid A with respect to the plurality of first flow paths Ra) is suppressed.
 また、本実施形態の熱交換器1では、分配流路6が、中空部Sと連通する流入開口部601と、分配器5の周方向に沿って延びると共に流入開口部601と第一分配部603とを接続する第一接続流路602と、を含んでいる。このため、中空部SをX軸方向に流れる第一流体Aがこの流通方向の流れ成分(速度成分)を持ったまま流入開口部601から分配流路6に流入しても、第一流体Aが周方向に沿って延びる第一接続流路602を流れた後に第一分配部603に入ることで、該第一分配部603に流入する第一流体Aの流れにおいてX軸方向の流れ成分が無くなる(又は少なくなる)。これにより、第一分配部603が流入してきた第一流体AをX軸方向の一方と他方とに分配したときの一方側出口6032から流出する第一流体Aの流量と、他方側出口6033から流出する第一流体Aの流量との差が抑えられる(又は無くなる)。その結果、各第一流路Raに対する第一流体Aの分配ムラがより効果的に抑えられる。 Further, in the heat exchanger 1 of the present embodiment, the distribution flow path 6 extends along the circumferential direction of the inflow opening 601 and the distributor 5 communicating with the hollow portion S, and the inflow opening 601 and the first distribution portion. Includes a first connection flow path 602 that connects to the 603. Therefore, even if the first fluid A flowing in the hollow portion S in the X-axis direction flows into the distribution flow path 6 from the inflow opening 601 while having the flow component (velocity component) in the flow direction, the first fluid A Enters the first distribution section 603 after flowing through the first connection flow path 602 extending along the circumferential direction, so that the flow component in the X-axis direction is introduced in the flow of the first fluid A flowing into the first distribution section 603. It disappears (or decreases). As a result, the flow rate of the first fluid A flowing out from one side outlet 6032 when the first fluid A flowing into the first distribution unit 603 is distributed to one side and the other side in the X-axis direction, and from the other side outlet 6033. The difference from the flow rate of the first fluid A flowing out is suppressed (or eliminated). As a result, uneven distribution of the first fluid A with respect to each first flow path Ra can be suppressed more effectively.
 また、本実施形態の熱交換器1において、各第一流路Raの上流端開口部RaOでは、熱交換器本体2に第一流体Aが流通したときに連通空間Ra1と第一流路Raとの間で差圧が生じる。 Further, in the heat exchanger 1 of the present embodiment, in the upstream end opening RaO of each first flow path Ra, when the first fluid A flows through the heat exchanger main body 2, the communication space Ra1 and the first flow path Ra are connected to each other. A differential pressure is generated between them.
 このため、流出部616の数より第一流路Raの数が多い場合のように、一つの流出部616から流出した第一流体Aが該流出部616と対応する位置の複数の第一流路Raのそれぞれに流入する際に、一つの流出部616から前記対応する位置の各上流端開口部RaOまでの距離に差があったとしても、前記差圧が生じるため、連通空間Ra1に溜まった第一流体Aが同じ圧力が加わった状態で各上流端開口部RaOを通過して前記対応する複数の第一流路Raのそれぞれに流入する。これにより、流出部616の数より第一流路Raの数が多い構成であっても、各第一流路Raへの第一流体Aの流入量の差が抑えられる。その結果、複数の第一流路Raに対する第一流体Aの分配ムラが好適に抑えられる。 Therefore, as in the case where the number of the first flow paths Ra is larger than the number of the outflow portions 616, the first fluid A flowing out from one outflow portion 616 has a plurality of first flow paths Ra at positions corresponding to the outflow portions 616. Even if there is a difference in the distance from one outflow portion 616 to each upstream end opening RaO at the corresponding position when flowing into each of the above, the differential pressure is generated, so that the third fluid accumulated in the communication space Ra1. A fluid A passes through each upstream end opening RaO under the same pressure and flows into each of the corresponding first flow paths Ra. As a result, even if the number of first flow paths Ra is larger than the number of outflow portions 616, the difference in the amount of inflow of the first fluid A into each first flow path Ra can be suppressed. As a result, uneven distribution of the first fluid A with respect to the plurality of first flow paths Ra is suitably suppressed.
 尚、本発明のプレート式熱交換器及び分配器は、上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。例えば、ある実施形態の構成に他の実施形態の構成を追加することができ、また、ある実施形態の構成の一部を他の実施形態の構成に置き換えることができる。さらに、ある実施形態の構成の一部を削除することができる。 The plate heat exchanger and distributor of the present invention are not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the gist of the present invention. For example, the configuration of one embodiment can be added to the configuration of another embodiment, and a part of the configuration of one embodiment can be replaced with the configuration of another embodiment. In addition, some of the configurations of certain embodiments can be deleted.
 分配流路6の具体的な構成は限定されない。例えば、上記実施形態の分配流路6は、周方向に延びる仮想線C1やX軸方向に延びる仮想線C2を対象軸とした線対称な構成(図13参照)であるが、この構成に限定されない。分配流路6は、非対称な経路パターンであってもよい。分配流路6において、流入開口部601から各流出部616までの流通経路同士の距離の差が無い又は従来のプレート式熱交換器(図26~図28参照)より小さければよい。 The specific configuration of the distribution flow path 6 is not limited. For example, the distribution flow path 6 of the above embodiment has a line-symmetrical configuration (see FIG. 13) with the virtual line C1 extending in the circumferential direction and the virtual line C2 extending in the X-axis direction as the target axes, but is limited to this configuration. Not done. The distribution flow path 6 may have an asymmetrical path pattern. In the distribution flow path 6, it is sufficient that there is no difference in the distance between the flow paths from the inflow opening 601 to each outflow portion 616, or it is smaller than the conventional plate heat exchanger (see FIGS. 26 to 28).
 また、上記実施形態の分配流路6において、流入開口部601から各流出部616までの第一流体Aの流通経路同士の距離はそれぞれ同じであるが、この構成に限定されない。分配流路6において、流入開口部601から各流出部616までの流通経路の距離は、異なっていてもよい。例えば、全ての流通経路の距離が異なっていてもよく、複数の流通経路のうちの一部の流通経路の距離が異なっていってもよい。この構成においても、流入開口部601から各流出部616までの流通経路同士の距離の差が無い又は従来のプレート式熱交換器(図26~図28参照)より小さければよい。 Further, in the distribution flow path 6 of the above embodiment, the distances between the flow paths of the first fluid A from the inflow opening 601 to each outflow portion 616 are the same, but the distance is not limited to this configuration. In the distribution flow path 6, the distance of the flow path from the inflow opening 601 to each outflow part 616 may be different. For example, the distances of all distribution channels may be different, or the distances of some distribution channels among a plurality of distribution channels may be different. Also in this configuration, it is sufficient that there is no difference in the distance between the flow paths from the inflow opening 601 to each outflow portion 616, or that the distance is smaller than that of the conventional plate heat exchanger (see FIGS. 26 to 28).
 また、上記実施形態の分配流路6は、複数の分配部(上記実施形態の例では、一つの第一分配部603、四つの第二分配部607、八つの第三分配部610、十六の第四分配部613)を含むが、この構成に限定されない。分配流路6は、少なくとも一つの分配部を含んでいればよい。 Further, the distribution flow path 6 of the above embodiment has a plurality of distribution units (in the example of the above embodiment, one first distribution unit 603, four second distribution units 607, eight third distribution units 610, and 16). The fourth distribution unit 613) is included, but the present invention is not limited to this configuration. The distribution flow path 6 may include at least one distribution unit.
 かかる構成によっても、第一流体AがX軸方向の一方と他方とに分配されることで、一方のエンドプレート23の貫通孔231から各第一流路Raまでの第一流体Aの流通経路同士の距離の差を抑えることができる。即ち、一方のエンドプレート23の貫通孔231から各第一流路Raまでの流通経路のうちの最短流通経路と最長流通経路との長さ(経路長)の差を、図26~図28に示すような、第一流体Aの入口から第一流路Faまでの流通経路の距離が該入口から所定方向(伝熱プレート101の重ね合わせ方向)に離れた第一流路Faほど大きくなる従来のプレート式熱交換器100に比べ、小さくすることができ、これにより、流通抵抗等に起因した複数の第一流路Raに対する第一流体Aの分配ムラを抑えることができる。 Even with this configuration, the first fluid A is distributed to one side and the other side in the X-axis direction, so that the flow paths of the first fluid A from the through hole 231 of one end plate 23 to each first flow path Ra are connected to each other. The difference in distance can be suppressed. That is, the difference in length (route length) between the shortest distribution path and the longest distribution path among the distribution paths from the through hole 231 of one end plate 23 to each first flow path Ra is shown in FIGS. 26 to 28. Such a conventional plate type in which the distance of the distribution path from the inlet of the first fluid A to the first flow path Fa becomes larger as the distance from the inlet increases in a predetermined direction (overlapping direction of the heat transfer plates 101). It can be made smaller than the heat exchanger 100, and thus it is possible to suppress uneven distribution of the first fluid A with respect to the plurality of first flow paths Ra due to flow resistance and the like.
 また、上記実施形態の分配流路6は、第一流体Aを分配器5の周方向の一方と他方とに分配する周方向分配部605を含んでいるが、この構成に限定されない。分配流路6は、周方向分配部605を含まない構成でもよい。 Further, the distribution flow path 6 of the above embodiment includes the circumferential distribution unit 605 that distributes the first fluid A to one of the circumferential directions of the distributor 5 and the other, but is not limited to this configuration. The distribution flow path 6 may be configured not to include the circumferential distribution unit 605.
 上記実施形態の分配器5では、分配流路6の最初の分配部(第一分配部603)の上流に周方向に沿った方向に延びる流路(第一接続流路602)が配置されているが、この構成に限定されない。例えば、図17~図19に示すように、分配流路6の上流端に分配部(第一分配部603)が配置される構成でもよい。即ち、分配流路6は、第一分配部603が上流端に配置され、該第一分配部603の第一分配部入口6031が中空部Sと連通する構成でもよい。この場合、内側筒状部52の流入開口53が第一分配部603の第一分配部入口6031を構成する。 In the distributor 5 of the above embodiment, a flow path (first connection flow path 602) extending in the circumferential direction is arranged upstream of the first distribution section (first distribution section 603) of the distribution flow path 6. However, it is not limited to this configuration. For example, as shown in FIGS. 17 to 19, a distribution unit (first distribution unit 603) may be arranged at the upstream end of the distribution flow path 6. That is, the distribution flow path 6 may have a configuration in which the first distribution section 603 is arranged at the upstream end and the first distribution section inlet 6031 of the first distribution section 603 communicates with the hollow portion S. In this case, the inflow opening 53 of the inner tubular portion 52 constitutes the first distribution portion inlet 6031 of the first distribution portion 603.
 この構成の場合、分配器5は、図20~図22に示すような、中空部Sにおける流入開口53(第一分配部入口6031)と対応する位置に配置される方向変更部材7を有することが好ましい。この方向変更部材7は、中空部Sと流入開口53(第一分配部入口6031)とを連通させ且つ第一流体Aが流通可能な内部空間S1を有し、該内部空間S1を通過させることによって第一流体Aの流れ方向を分配器5の径方向(流入開口53の位置における分配器(筒状壁)5の厚さ方向)に沿った向きに変更する。 In the case of this configuration, the distributor 5 has a direction changing member 7 arranged at a position corresponding to the inflow opening 53 (first distribution unit inlet 6031) in the hollow portion S as shown in FIGS. 20 to 22. Is preferable. The direction changing member 7 has an internal space S1 that allows the hollow portion S and the inflow opening 53 (first distribution portion inlet 6031) to communicate with each other and allows the first fluid A to flow, and allows the first fluid A to pass through the internal space S1. The flow direction of the first fluid A is changed along the radial direction of the distributor 5 (the thickness direction of the distributor (cylindrical wall) 5 at the position of the inflow opening 53).
 具体的に、方向変更部材7は、第一流体Aが流通可能な内部空間S1を画定する本体70と、本体70の外部空間と内部空間S1とを連通させる第一開口71と、第一開口71と異なる位置に配置され且つ本体70の外部空間と内部空間S1とを連通させる第二開口72と、を有する。 Specifically, the direction changing member 7 has a main body 70 that defines an internal space S1 through which the first fluid A can flow, a first opening 71 that communicates the external space of the main body 70 with the internal space S1, and a first opening. It has a second opening 72 which is arranged at a position different from 71 and communicates the external space of the main body 70 with the internal space S1.
 本体70は、流入開口53と対応する位置の中空部Sに応じた形状を有する。即ち、本体70は、内側筒状部52に内嵌可能な形状である。 The main body 70 has a shape corresponding to the hollow portion S at a position corresponding to the inflow opening 53. That is, the main body 70 has a shape that can be fitted into the inner tubular portion 52.
 第一開口71は、本体70において、方向変更部材7が分配器5の中空部Sに配置された状態のときに該中空部Sを流れる第一流体Aが内部空間S1に流入可能な位置に配置されている。この第一開口71は、該第一開口71から流れ込んだ第一流体Aが内部空間S1において流れる距離を確保するために、第二開口72から離れた位置に配置されている。例えば、図20及び図22に示す方向変更部材7では、第一開口71は、流入開口53と対向する第二開口72に対し、分配器5の中心軸Cより離れた位置(図22における中心軸Cより下方位置)に配置される。この方向変更部材7の内部空間S1において、第一流体Aが、流入開口53(第二開口72)に向けて径方向(詳しくは、流入開口53位置における分配器5の厚さ方向)に沿って流れる距離が大きくなるほど、流入開口53に流入するときの第一流体Aの流れにおいて中心軸C方向の流れ成分(速度成分)が小さくなる又は無くなる。具体的に、第一流体Aが内部空間S1を流れる距離は、流入開口53の直径の10倍以上が好ましい。 The first opening 71 is located at a position in the main body 70 where the first fluid A flowing through the hollow portion S can flow into the internal space S1 when the direction changing member 7 is arranged in the hollow portion S of the distributor 5. Have been placed. The first opening 71 is arranged at a position away from the second opening 72 in order to secure a distance for the first fluid A flowing from the first opening 71 to flow in the internal space S1. For example, in the direction changing member 7 shown in FIGS. 20 and 22, the first opening 71 is located at a position (center in FIG. 22) away from the central axis C of the distributor 5 with respect to the second opening 72 facing the inflow opening 53. (Position below axis C). In the internal space S1 of the direction changing member 7, the first fluid A is along the radial direction (specifically, the thickness direction of the distributor 5 at the inflow opening 53 position) toward the inflow opening 53 (second opening 72). As the flow distance increases, the flow component (velocity component) in the direction of the central axis C in the flow of the first fluid A when flowing into the inflow opening 53 becomes smaller or disappears. Specifically, the distance through which the first fluid A flows through the internal space S1 is preferably 10 times or more the diameter of the inflow opening 53.
 第二開口72は、本体70において、方向変更部材7が分配器5の中空部Sに配置された状態のときに流入開口53と対向又は直接連通する位置に配置される。 The second opening 72 is arranged in the main body 70 at a position facing or directly communicating with the inflow opening 53 when the direction changing member 7 is arranged in the hollow portion S of the distributor 5.
 尚、複数の分配器5が並んだ状態で熱交換器1の連通空間Ra1に配置される場合があるため(図23参照)、方向変更部材7は、中空部Sにおいて第一流体Aが方向変更部材7の位置を中心軸C方向に通過できる構成が好ましい。例えば、図20に示す方向変更部材7では、二つの第一開口71は、方向変更部材7が分配器5の中空部Sに配置された状態のときに中心軸C方向に対向する位置に配置されている。また、図21に示す方向変更部材7では、方向変更部材7が分配器5の中空部Sに配置された状態のときに、中心軸Cを挟んで流入開口53と反対側の位置において内側筒状部52の内周面52bとの間に隙間ができる形状を本体70が有している。 Since a plurality of distributors 5 may be arranged side by side in the communication space Ra1 of the heat exchanger 1 (see FIG. 23), the direction changing member 7 has the direction of the first fluid A in the hollow portion S. A configuration capable of passing the position of the changing member 7 in the central axis C direction is preferable. For example, in the direction changing member 7 shown in FIG. 20, the two first openings 71 are arranged at positions facing the central axis C direction when the direction changing member 7 is arranged in the hollow portion S of the distributor 5. Has been done. Further, in the direction changing member 7 shown in FIG. 21, when the direction changing member 7 is arranged in the hollow portion S of the distributor 5, the inner cylinder is located at a position opposite to the inflow opening 53 with the central axis C in between. The main body 70 has a shape in which a gap is formed between the shape portion 52 and the inner peripheral surface 52b.
 以上の方向変更部材7によれば、図17~図19に示す構成のように中空部Sを流れる第一流体Aが分配流路6の第一分配部603に直接流入する構成であっても、方向変更部材7が中空部Sにおける第一分配部入口6031の直前(第一分配部入口6031と対応する位置)に配置されていることで、第一分配部603(第一分配部入口6031)には、分配器5の径方向に沿った流れの第一流体Aが流入する。即ち、中心軸C方向(分配器5が連通空間Ra1に配置されたときにX軸方向と一致する方向)の流れ成分(速度成分)が無い又は少ない状態の第一流体Aが第一分配部603に流入する。これにより、第一分配部603によって第一流体AをX軸方向の一方と他方とに分配したときの一方側出口6032から流出する第一流体Aの流量と、他方側出口6033から流出する第一流体Aの流量との差が抑えられ(又は無くなり)、その結果、各第一流路Raに対する第一流体Aの分配ムラが効果的に抑えられる。 According to the above-mentioned direction changing member 7, even if the first fluid A flowing through the hollow portion S directly flows into the first distribution portion 603 of the distribution flow path 6 as in the configuration shown in FIGS. 17 to 19. , The direction changing member 7 is arranged immediately before the first distribution section inlet 6031 in the hollow portion S (position corresponding to the first distribution section inlet 6031), so that the first distribution section 603 (first distribution section inlet 6031) ), The first fluid A flowing along the radial direction of the distributor 5 flows into the). That is, the first fluid A in a state where there is no or little flow component (velocity component) in the central axis C direction (direction corresponding to the X-axis direction when the distributor 5 is arranged in the communication space Ra1) is the first distribution unit. It flows into 603. As a result, the flow rate of the first fluid A flowing out from one side outlet 6032 when the first fluid A is distributed to one side and the other side in the X-axis direction by the first distribution unit 603, and the flow rate flowing out from the other side outlet 6033. The difference from the flow rate of one fluid A is suppressed (or eliminated), and as a result, uneven distribution of the first fluid A with respect to each first flow path Ra is effectively suppressed.
 上記実施形態の分配器5では、流入開口53が中心軸C方向の中央に配置されているが、この構成に限定されない。流入開口53は、X軸方向の何れの位置に配置されてもよい。この場合、分配流路6が、流入開口部601から各流出部616までの流通経路同士の距離が同じ又は従来のプレート式熱交換器より小さくなる経路パターンであればよい。 In the distributor 5 of the above embodiment, the inflow opening 53 is arranged at the center in the central axis C direction, but the present invention is not limited to this configuration. The inflow opening 53 may be arranged at any position in the X-axis direction. In this case, the distribution flow path 6 may have a path pattern in which the distance between the flow paths from the inflow opening 601 to each outflow portion 616 is the same or smaller than that of the conventional plate heat exchanger.
 上記実施形態の熱交換器1は、一つの分配器5を備えているが、この構成に限定されない。熱交換器1において伝熱プレート21の数が多く、熱交換器1のX軸方向の寸法が大きい、即ち、連通空間Ra1のX軸方向の長さ寸法が大きい場合には、複数(図23に示す例では二つ)の分配器5が中心軸C方向に並べられた状態で連通空間Ra1に配置されてもよい。即ち、熱交換器1は、複数の分配器5を備えてもよい。 The heat exchanger 1 of the above embodiment includes one distributor 5, but is not limited to this configuration. When the number of heat transfer plates 21 is large in the heat exchanger 1 and the dimension of the heat exchanger 1 in the X-axis direction is large, that is, the length dimension of the communication space Ra1 in the X-axis direction is large, a plurality (FIG. 23). In the example shown in (1), the distributors (2) may be arranged in the communication space Ra1 in a state of being arranged in the central axis C direction. That is, the heat exchanger 1 may include a plurality of distributors 5.
 上記実施形態の分配器5は、中心軸C方向の両端が開口する筒状であるが、この構成に限定されない。分配器5は、中心軸C方向の一方の端が閉塞された、いわゆる有底筒状であってもよい。 The distributor 5 of the above embodiment has a tubular shape in which both ends in the central axis C direction are open, but the present invention is not limited to this configuration. The distributor 5 may have a so-called bottomed tubular shape in which one end in the central axis C direction is closed.
 また、上記実施形態の分配器5は、円筒形状であるが、この構成に限定されない。分配器5は、断面が多角形の角筒形状や、断面が楕円の筒形状等であってもよい。即ち、分配器5は、中空部Sを有すると共に、外部から中空部Sに第一流体Aを供給可能で且つ第一流体Aが中空部Sを流通可能な構成であればよい。 Further, the distributor 5 of the above embodiment has a cylindrical shape, but is not limited to this configuration. The distributor 5 may have a rectangular tubular shape having a polygonal cross section, a tubular shape having an elliptical cross section, or the like. That is, the distributor 5 may have a structure that includes the hollow portion S, can supply the first fluid A to the hollow portion S from the outside, and allows the first fluid A to flow through the hollow portion S.
 また、上記実施形態の分配器5では、分配流路6が、内側筒状部52の外周面52aに形成された溝521と、外側筒状部51の内周面51bとによって構成(画定)されているが、この構成に限定されない。例えば、分配流路6は、外側筒状部51の内周面51bに形成された溝と内側筒状部52の外周面52aとによって構成されてもよい。また、分配流路6は、外側筒状部51の内周面51bと内側筒状部52の外周面52aとのそれぞれに形成された溝によって構成されてもよい。 Further, in the distributor 5 of the above embodiment, the distribution flow path 6 is configured (defined) by a groove 521 formed on the outer peripheral surface 52a of the inner tubular portion 52 and an inner peripheral surface 51b of the outer tubular portion 51. However, it is not limited to this configuration. For example, the distribution flow path 6 may be composed of a groove formed on the inner peripheral surface 51b of the outer tubular portion 51 and an outer peripheral surface 52a of the inner tubular portion 52. Further, the distribution flow path 6 may be formed by grooves formed in each of the inner peripheral surface 51b of the outer tubular portion 51 and the outer peripheral surface 52a of the inner tubular portion 52.
 また、上記実施形態の分配器5は、二つの筒状部50(外側筒状部51と内側筒状部52)を有しているが、この構成に限定されない。分配器5は、筒状壁の厚さ方向(上記実施形態の例では径方向)に重なる三つ以上の筒状部50を有していてもよい。 Further, the distributor 5 of the above embodiment has two tubular portions 50 (outer tubular portion 51 and inner tubular portion 52), but is not limited to this configuration. The distributor 5 may have three or more tubular portions 50 that overlap in the thickness direction of the tubular wall (diameter direction in the example of the above embodiment).
 この場合、分配流路6は、径方向に連続して重なる三つ以上の筒状部50内に形成、即ち、径方向に連続して重なる三つ以上の筒状部50によって形成されていてもよい。例えば、図24に示すように、径方向に重なる三つの筒状部(外側筒状部51、中間筒状部55、内側筒状部52)を有する場合に、中間筒状部55が上記実施形態の経路パターン(図13参照)と同じ形状のスリット(上記実施形態の溝521が厚さ方向に貫通したものに相当)521aを有し、該スリット521aの径方向外側を外側筒状部51の内周面51bが塞ぎ、該スリットの径方向内側を内側筒状部52の外周面52aが塞ぐことによって、分配流路6が構成されていてもよい。 In this case, the distribution flow path 6 is formed in three or more tubular portions 50 that are continuously overlapped in the radial direction, that is, is formed by three or more tubular portions 50 that are continuously overlapped in the radial direction. May be good. For example, as shown in FIG. 24, when the intermediate tubular portion 55 has three tubular portions (outer tubular portion 51, intermediate tubular portion 55, and inner tubular portion 52) that overlap in the radial direction, the intermediate tubular portion 55 performs the above operation. It has a slit (corresponding to the groove 521 of the above embodiment penetrating in the thickness direction) 521a having the same shape as the path pattern of the form (see FIG. 13), and the outer tubular portion 51 is formed on the radial outer side of the slit 521a. The distribution flow path 6 may be configured by closing the inner peripheral surface 51b of the slit and closing the radial inner side of the slit by the outer peripheral surface 52a of the inner tubular portion 52.
 また、上記実施形態の分配器5では、第一流体Aが径方向(筒状壁の厚さ方向)に開口する流入開口53から分配流路6に流入するが、この構成に限定されない。例えば、図25に示すように、第一流体Aが分配器5の中心軸C方向に開口する流入開口53から分配流路6に流入する構成でもよい。 Further, in the distributor 5 of the above embodiment, the first fluid A flows into the distribution flow path 6 from the inflow opening 53 that opens in the radial direction (thickness direction of the tubular wall), but the configuration is not limited to this. For example, as shown in FIG. 25, the first fluid A may flow into the distribution flow path 6 from the inflow opening 53 that opens in the central axis C direction of the distributor 5.
 また、上記実施形態の分配器5では、外側筒状部51においてX軸方向に並ぶ貫通孔511(流出部616)の数は、第一流路Raの数より少ないが、この構成に限定されない。外側筒状部51においてX軸方向に並ぶ貫通孔511の数は、第一流路Raの数と同じ、又は第一流路Raの数より多くてもよい。 Further, in the distributor 5 of the above embodiment, the number of through holes 511 (outflow portion 616) arranged in the X-axis direction in the outer tubular portion 51 is smaller than the number of the first flow path Ra, but is not limited to this configuration. The number of through holes 511 arranged in the X-axis direction in the outer tubular portion 51 may be the same as the number of the first flow path Ra or may be larger than the number of the first flow path Ra.
 上記実施形態の熱交換器1では、分配器5と、連通空間Ra1を画定する部材等との間に隙間が形成されているが、この構成に限定されない。分配器5と連通空間Ra1を画定する部材との間に隙間がなくてもよい。この場合、分配流路6の流出部616から流出した第一流体Aは、直接第一流路Raに流入する。 In the heat exchanger 1 of the above embodiment, a gap is formed between the distributor 5 and the member or the like defining the communication space Ra1, but the present invention is not limited to this configuration. There may be no gap between the distributor 5 and the member defining the communication space Ra1. In this case, the first fluid A that has flowed out from the outflow portion 616 of the distribution flow path 6 directly flows into the first flow path Ra.
 また、上記実施形態の熱交換器1では、長ボルト25によるボルト締結を解除して一対のエンドプレート23、24を離間させることで、伝熱プレート群21AのX軸方向の挟み込みが解放され、これにより、伝熱プレート21やガスケット22、分配器5等が交換可能となる構成であるが、この構成に限定されない。熱交換器1は、伝熱プレート群21Aの周囲がロウ付けによって各流路(第一流路Ra、第二流路Rb等)が液密に密閉された構成でもよい。 Further, in the heat exchanger 1 of the above embodiment, by releasing the bolt fastening by the long bolt 25 and separating the pair of end plates 23 and 24, the heat transfer plate group 21A is released from being sandwiched in the X-axis direction. As a result, the heat transfer plate 21, the gasket 22, the distributor 5, and the like can be replaced, but the configuration is not limited to this. The heat exchanger 1 may have a configuration in which each flow path (first flow path Ra, second flow path Rb, etc.) is hermetically sealed by brazing around the heat transfer plate group 21A.
 上記実施形態の分配器5は、熱交換器1の構成要素の一つであるが、この構成に限定されない。分配器5は、従来のプレート式熱交換器(上記実施形態の熱交換器本体2のみで構成されるプレート式熱交換器)の第一流体供給路(各第一流路Raに第一流体Aを供給する流路:上記実施形態の連通空間Ra1に相当)に、後付けで配置される構成でもよい。 The distributor 5 of the above embodiment is one of the components of the heat exchanger 1, but is not limited to this configuration. The distributor 5 is a first fluid supply path of a conventional plate heat exchanger (a plate heat exchanger composed of only the heat exchanger main body 2 of the above embodiment) (first fluid A in each first flow path Ra). (Corresponding to the communication space Ra1 of the above embodiment) may be arranged afterwards.
 以上より、本発明によれば、複数の第一流路に対する第一流体の分配ムラを抑えることのできるプレート式熱交換器、及びプレート式熱交換器用の分配器を提供することができる。 From the above, according to the present invention, it is possible to provide a plate type heat exchanger capable of suppressing uneven distribution of the first fluid to a plurality of first flow paths, and a distributor for a plate type heat exchanger.
 本発明に係るプレート式熱交換器は、
 それぞれが所定方向と直交する面方向に広がる複数の伝熱プレートを有し、これら複数の伝熱プレートが前記所定方向に重ね合わされていることによって第一流体を流通させる第一流路と第二流体を流通させる第二流路とが各伝熱プレートを境に交互に並ぶように複数の第一流路と少なくとも一つの第二流路とが形成されている熱交換器本体と、
 前記第一流体を前記複数の第一流路に分配する分配器と、を備え、
 前記複数の伝熱プレートのうちの連続して並ぶ(隣接する)二つ以上の伝熱プレートのそれぞれは、前記所定方向から見て相互に重なる位置に貫通孔を有し、
 前記連続して並ぶ二つ以上の伝熱プレートは、各貫通孔が前記所定方向に連なることによって各第一流路と連通する連通空間を形成し、
 前記分配器は、前記連通空間内において前記所定方向に延び且つ前記熱交換器本体の外部から供給される前記第一流体が流通する中空部を囲む筒状壁であって、該筒状壁の厚さ方向に積層される複数の筒状部を備える筒状壁を有し、
 前記筒状壁は、前記複数の筒状部のうちの前記厚さ方向に連続して重なる(隣接する)二つ以上の筒状部内に前記第一流体が流通可能な分配流路を有し、
 前記分配流路は、
  前記中空部から該分配流路に流入した前記第一流体を前記所定方向の一方と他方とに分配する分配部であって、前記第一流体が前記一方に流出する一方側分配部出口及び前記第一流体が前記他方に流出する他方側分配部出口を含む分配部と、
  前記一方側分配部出口又は前記他方側分配部出口と直接又は間接にそれぞれ連通すると共に、少なくとも前記厚さ方向における最も外側の筒状部を貫通することにより前記連通空間又は前記第一流路とそれぞれ連通する複数の流出部と、を含み、
 前記複数の流出部は、前記所定方向に間隔をあけて配置されている。
The plate heat exchanger according to the present invention
Each has a plurality of heat transfer plates extending in a plane direction orthogonal to a predetermined direction, and the plurality of heat transfer plates are superposed in the predetermined direction to allow the first fluid to flow through the first flow path and the second fluid. A heat exchanger body in which a plurality of first flow paths and at least one second flow path are formed so that the second flow paths for circulating the fluid are alternately arranged with each heat transfer plate as a boundary.
A distributor that distributes the first fluid to the plurality of first flow paths is provided.
Each of the two or more heat transfer plates arranged in succession (adjacent) among the plurality of heat transfer plates has through holes at positions overlapping each other when viewed from the predetermined direction.
The two or more heat transfer plates arranged in succession form a communication space in which each through hole is connected in the predetermined direction to communicate with each first flow path.
The distributor is a tubular wall that surrounds a hollow portion that extends in the predetermined direction in the communication space and through which the first fluid supplied from the outside of the heat exchanger body flows, and is a tubular wall of the tubular wall. It has a tubular wall with a plurality of tubular portions stacked in the thickness direction,
The tubular wall has a distribution flow path through which the first fluid can flow in two or more tubular portions that are continuously overlapped (adjacent) in the thickness direction of the plurality of tubular portions. ,
The distribution channel is
A distribution unit that distributes the first fluid that has flowed into the distribution flow path from the hollow portion to one and the other in the predetermined direction, and is an outlet of the one-side distribution unit through which the first fluid flows out to the one and the said. A distributor including the outlet of the other side where the first fluid flows out to the other,
Directly or indirectly communicate with the outlet of the one-side distribution unit or the outlet of the other-side distribution unit, and penetrate the outermost tubular portion in at least the thickness direction to communicate with the communication space or the first flow path, respectively. Including multiple outflow parts that communicate
The plurality of outflow portions are arranged at intervals in the predetermined direction.
 このように、熱交換器本体の外部から分配器の中空部に供給された第一流体が複数の流出部から流出して各第一流路に到達するまでの間に分配流路の分配部によって所定方向(伝熱プレートの重ね合わせ方向)の一方と他方とに分配される構成とすることで、中空部の入口から各第一流路までの第一流体の流通経路同士の距離の差を、流通経路の距離が第一流体の入口から離れた第一流路ほど大きくなる従来のプレート式熱交換器(図27参照)に比べ、抑えることができる。これにより、第一流体の熱交換器本体への入口からの流通経路同士の距離の差に(流通抵抗)に起因する各第一流路への第一流体の分配ムラ(即ち、複数の第一流路に対する第一流体の分配ムラ)を抑えることができる。 In this way, the first fluid supplied from the outside of the heat exchanger body to the hollow part of the distributor flows out from the plurality of outflow parts and reaches each first flow path by the distribution part of the distribution flow path. By configuring the distribution to one of the predetermined directions (the direction in which the heat transfer plates are overlapped) and the other, the difference in the distance between the flow paths of the first fluid from the inlet of the hollow portion to each first flow path can be determined. This can be suppressed as compared with the conventional plate heat exchanger (see FIG. 27) in which the distance of the flow path becomes larger as the distance of the first flow path is farther from the inlet of the first fluid. As a result, uneven distribution of the first fluid to each first flow path (that is, a plurality of first streams) due to the difference in distance between the flow paths from the inlet of the first fluid to the heat exchanger body (flow resistance). It is possible to suppress uneven distribution of the first fluid with respect to the path).
 前記プレート式熱交換器では、
 前記分配流路は、前記中空部と連通する開口部と、前記筒状壁の周方向に沿って延びると共に前記開口部と前記分配部とを接続する接続流路と、を含んでもよい。
In the plate heat exchanger,
The distribution flow path may include an opening communicating with the hollow portion and a connection flow path extending along the circumferential direction of the tubular wall and connecting the opening and the distribution portion.
 かかる構成によれば、中空部を所定方向に流通する第一流体がこの流通方向の流れ成分(速度成分)を持ったまま開口部から分配流路に流入しても、第一流体が前記周方向に沿って延びる接続流路を流れた後に分配部に入ることで、分配部に流入する第一流体の流れにおいて前記所定方向の流れ成分が無くなる(又は少なくなる)。これにより、分配部が流入してきた第一流体を所定方向の一方と他方とに分配したときの一方側分配部出口から流出する第一流体の流量と、他方側分配部出口から流出する第一流体の流量との差が抑えられ(又は無くなり)、その結果、各第一流路に対する第一流体の分配ムラがより効果的に抑えられる。 According to this configuration, even if the first fluid flowing in the hollow portion in a predetermined direction flows into the distribution flow path from the opening while having the flow component (velocity component) in the flow direction, the first fluid flows into the distribution flow path. By entering the distribution section after flowing through the connecting flow path extending along the direction, the flow component in the predetermined direction is eliminated (or reduced) in the flow of the first fluid flowing into the distribution section. As a result, the flow rate of the first fluid flowing out from the outlet of the one-side distribution unit when the first fluid flowing into the distribution unit is distributed to one and the other in a predetermined direction, and the first flowing out from the outlet of the other side distribution unit. The difference from the flow rate of the fluid is suppressed (or eliminated), and as a result, the uneven distribution of the first fluid with respect to each first flow path is suppressed more effectively.
 また、前記プレート式熱交換器では、
 前記分配部は、前記中空部と連通して該中空部から該分配部に前記第一流体を流入させる分配部入口を含み、
 前記分配器は、前記筒状壁の前記中空部における前記分配部入口と対応する位置に配置される方向変更部材を有し、
 前記方向変更部材は、前記中空部と前記分配部入口とを連通させ且つ前記第一流体が流通可能な内部空間を有し、該内部空間を通過させることによって前記第一流体の流れ方向を分配部入口位置における前記筒状壁の厚さ方向に沿った向きにしてもよい。
Further, in the plate heat exchanger,
The distribution unit includes a distribution unit inlet that communicates with the hollow portion and allows the first fluid to flow into the distribution unit from the hollow portion.
The distributor has a direction changing member arranged at a position corresponding to the inlet of the distributor in the hollow portion of the tubular wall.
The direction changing member has an internal space that communicates the hollow portion and the inlet of the distribution portion and allows the first fluid to flow, and distributes the flow direction of the first fluid by passing through the internal space. The orientation may be along the thickness direction of the tubular wall at the entrance position.
 このように、筒状壁において中空部を流通する第一流体が直接分配部に流入する構成であっても、方向変更部材が中空部における分配部入口の直前(分配部入口と対応する位置)に配置されていることで、分配部(分配部入口)には、前記筒状壁の厚さ方向に沿った流れの第一流体が流入する、即ち、所定方向の流れ成分が無い(又は少ない)状態の第一流体が流れこむ。これにより、分配部によって第一流体を分配したときの一方側分配部出口から流出する第一流体の流量と、他方側分配部出口から流出する第一流体の流量との差が抑えられ(又は無くなり)、その結果、各第一流路に対する第一流体の分配ムラがより効果的に抑えられる。 In this way, even if the first fluid flowing through the hollow portion of the tubular wall directly flows into the distribution portion, the direction changing member is immediately before the distribution portion inlet in the hollow portion (position corresponding to the distribution portion inlet). By being arranged in, the first fluid of the flow along the thickness direction of the tubular wall flows into the distribution section (distribution section inlet), that is, there is no (or few) flow components in the predetermined direction. ) The first fluid in the state flows in. As a result, the difference between the flow rate of the first fluid flowing out from the outlet of the one-side distribution unit and the flow rate of the first fluid flowing out from the outlet of the other side distribution unit when the first fluid is distributed by the distribution unit is suppressed (or). As a result, uneven distribution of the first fluid to each first flow path can be suppressed more effectively.
 また、前記プレート式熱交換器では、
 前記熱交換器本体は、前記連通空間と前記第一流路との境界位置のそれぞれに、該連通空間から該第一流路に前記第一流体が流入するときに通過する開口部を有し、
 各開口部では、前記熱交換器本体において前記第一流体が流通したときに前記連通空間と前記第一流路との間で差圧が生じてもよい。
Further, in the plate heat exchanger,
The heat exchanger main body has openings at the boundary positions between the communication space and the first flow path, through which the first fluid passes when the first fluid flows from the communication space into the first flow path.
At each opening, a differential pressure may be generated between the communication space and the first flow path when the first fluid flows through the heat exchanger body.
 かかる構成によれば、流出部の数より第一流路の数が多い場合のように、一つの流出部から流出した第一流体が該流出部と対応する位置の複数の第一流路のそれぞれに流入する際に、一つの流出部から前記対応する位置の各開口部までの距離に差があったとしても、前記差圧が生じるため、連通空間に溜まった第一流体が同じ圧力が加わった状態で各開口部を通過して前記対応する複数の第一流路のそれぞれに流入する。これにより、流出部の数より第一流路の数が多い構成であっても、各第一流路への第一流体の流入量の差が抑えられ、その結果、複数の第一流路に対する第一流体の分配ムラが好適に抑えられる。 According to such a configuration, as in the case where the number of the first flow paths is larger than the number of the outflow parts, the first fluid flowing out from one outflow part is applied to each of the plurality of first flow paths at the positions corresponding to the outflow parts. Even if there is a difference in the distance from one outflow portion to each opening at the corresponding position when flowing in, the differential pressure is generated, so that the same pressure is applied to the first fluid accumulated in the communication space. In the state, it passes through each opening and flows into each of the plurality of corresponding first flow paths. As a result, even if the number of the first flow paths is larger than the number of outflow portions, the difference in the inflow amount of the first fluid into each first flow path is suppressed, and as a result, the first flow path with respect to the plurality of first flow paths is suppressed. The uneven distribution of the fluid is suitably suppressed.
 本発明に係るプレート式熱交換器用の分配器は、
 それぞれが所定方向と直交する面方向に広がる複数の伝熱プレートを有し、これら複数の伝熱プレートが前記所定方向に重ね合わされていることによって第一流体を流通させる第一流路と第二流体を流通させる第二流路とが各伝熱プレートを境に交互に並ぶように複数の第一流路と少なくとも一つの第二流路とが形成されている熱交換器本体を備えるプレート式熱交換器において、前記複数の伝熱プレートのうちの連続して並ぶ(隣接する)二つ以上の伝熱プレートのそれぞれが有する貫通孔が前記所定方向に連なることによって形成される連通空間であって各第一流路と連通する連通空間に配置することにより、前記第一流体を前記複数の第一流路に分配可能なプレート熱交換器用の分配器であって、
 前記連通空間に配置されたときに、前記所定方向に延び且つ前記プレート式熱交換器の外部から供給される前記第一流体が流通する中空部を囲む筒状壁を備え、
 前記筒状壁は、該筒状壁の厚さ方向に積層される複数の筒状部によって構成されると共に、前記複数の筒状部のうちの前記厚さ方向に連続して重なる(隣接する)二つ以上の筒状部内に前記第一流体が流通可能な分配流路を有し、
 前記分配流路は、
  前記中空部から該分配流路に流入した前記第一流体を前記所定方向の一方と他方とに分配する分配部であって、前記第一流体が前記一方に流出する一方側分配部出口及び前記第一流体が前記他方に流出する他方側分配部出口を含む分配部と、
  前記一方側分配部出口又は前記他方側分配部出口と直接又は間接にそれぞれ連通すると共に、少なくとも前記厚さ方向における最も外側の筒状部を貫通することで前記連通空間又は前記第一流路と連通可能な複数の流出部と、を含み、
 前記複数の流出部は、前記所定方向に間隔をあけて配置されている。
The distributor for the plate heat exchanger according to the present invention is
Each has a plurality of heat transfer plates extending in a plane direction orthogonal to a predetermined direction, and the plurality of heat transfer plates are superposed in the predetermined direction to allow the first fluid to flow through the first flow path and the second fluid. A plate-type heat exchange having a heat exchanger body in which a plurality of first flow paths and at least one second flow path are formed so that the second flow paths for circulating the fluid are alternately arranged with each heat transfer plate as a boundary. In the vessel, it is a communication space formed by connecting through holes of two or more heat transfer plates that are continuously arranged (adjacent) among the plurality of heat transfer plates in the predetermined direction. A distributor for a plate heat exchanger capable of distributing the first fluid to the plurality of first flow paths by arranging the first fluid in a communication space communicating with the first flow path.
A tubular wall that surrounds a hollow portion that extends in the predetermined direction and through which the first fluid is supplied from the outside of the plate heat exchanger when arranged in the communication space is provided.
The tubular wall is composed of a plurality of tubular portions stacked in the thickness direction of the tubular wall, and is continuously overlapped (adjacent) in the thickness direction of the plurality of tubular portions. ) It has a distribution flow path through which the first fluid can flow in two or more tubular parts.
The distribution channel is
A distribution unit that distributes the first fluid that has flowed into the distribution flow path from the hollow portion to one and the other in the predetermined direction, the outlet of the one-side distribution unit through which the first fluid flows out to the one, and the said. A distributor including the outlet of the other side where the first fluid flows out to the other,
It communicates directly or indirectly with the outlet of the one-side distribution section or the outlet of the other-side distribution section, and communicates with the communication space or the first flow path by penetrating at least the outermost tubular portion in the thickness direction. Including multiple outflows possible
The plurality of outflow portions are arranged at intervals in the predetermined direction.
 かかる構成によれば、プレート式熱交換の連通空間に配置することで、熱交換器本体の外部から分配器の中空部に供給された第一流体が複数の流出部から流出して各第一流路に到達するまでの間に分配流路の分配部によって所定方向(伝熱プレートの重ね合わせ方向)の一方と他方とに分配され、中空部の入口から各第一流路までの第一流体の流通経路同士の距離の差が、流通経路の距離が第一流体の入口から離れた第一流路ほど大きくなる分配器の無いプレート式熱交換器(図27参照)に比べ、抑えられる。これにより、第一流体のプレート式熱交換器への入口からの流通経路の距離の差に(流通抵抗)に起因する各第一流路への第一流体の分配ムラ(即ち、複数の第一流路に対する第一流体の分配ムラ)が抑えられる。 According to this configuration, by arranging in the communication space of the plate type heat exchange, the first fluid supplied from the outside of the heat exchanger body to the hollow portion of the distributor flows out from the plurality of outflow portions, and each first flow. By the time it reaches the path, it is distributed to one and the other in a predetermined direction (overlapping direction of heat transfer plates) by the distribution part of the distribution flow path, and the first fluid from the inlet of the hollow part to each first flow path. The difference in the distances between the flow paths is suppressed as compared with the plate heat exchanger (see FIG. 27) in which the distance between the flow paths becomes larger as the first flow path is farther from the inlet of the first fluid than the plate heat exchanger without a distributor. As a result, uneven distribution of the first fluid to each first flow path (that is, a plurality of first streams) due to the difference in the distance of the flow path from the inlet of the first fluid to the plate heat exchanger (flow resistance). Distribution unevenness of the first fluid to the road) is suppressed.
 本発明を表現するために、上述において図面を参照しながら実施形態を通して本発明を適切且つ十分に説明したが、当業者であれば上述の実施形態を変更及び/又は改良することは容易に成し得ることであると認識すべきである。従って、当業者が実施する変更形態又は改良形態が、請求の範囲に記載された請求項の権利範囲を離脱するレベルのものでない限り、当該変更形態又は当該改良形態は、当該請求項の権利範囲に包括されると解釈される。 In order to express the present invention, the present invention has been appropriately and sufficiently described through the embodiments with reference to the drawings above, but those skilled in the art can easily change and / or improve the above embodiments. It should be recognized that it can be done. Therefore, unless the modified or improved form implemented by a person skilled in the art is at a level that deviates from the scope of rights of the claims stated in the claims, the modified form or the improved form is the scope of rights of the claims. It is interpreted as being included in.
 1…熱交換器、2…熱交換器本体、5…分配器、50…筒状部、51…外側筒状部(筒状部)、51a…外側筒状部の外周面、51b…外側筒状部の内周面、511…外側筒状部の貫通孔、52…内側筒状部、52a…内側筒状部の外周面、52b…内側筒状部の内周面、521…溝、53…流入開口、55…中間筒状部、6…分配流路、601…流入開口部(開口部)、602…第一接続流路、603…第一分配部(分配部)、6031…第一分配部入口(分配部入口)、6031a、6031b…第一分配部入口、6032…一方側出口(一方側分配部出口)、6033…他方側出口(他方側分配部出口)、604…第一分配流路、604a…一方の第一分配流路、604b…他方の第一分配流路、605…周方向分配部、6051…周方向分配部入口、6052…一方側出口、6053…他方側出口、606…周方向分配流路、606a…一方の周方向分配流路、606b…他方の周方向分配流路、607…第二分配部、6071…第二分配部入口、6072…一方側出口、6073…他方側出口、608…第二分配流路、608a…一方の第二分配流路、608b…他方の第二分配流路、609…第二接続流路、610…第三分配部、6101…第三分配部入口、6102…一方側出口、6103…他方側出口、611…第三分配流路、611a…一方の第三分配流路、611b…他方の第三分配流路、612…第三接続流路、613…第四分配部、6131…第四分配部入口、6132…一方側出口、6133…他方側出口、614…第四分配流路、614a…一方の第四分配流路、614b…他方の第四分配流路、615…第四接続流路、616…流出部、7…方向変更部材、70…本体、71…第一開口、72…第二開口、21…伝熱プレート、21A…伝熱プレート群、211…第一孔(貫通孔)、212…第二孔、213…第三孔、214…第四孔、22…ガスケット、23…一方のエンドプレート、231、232、233、234…一方のエンドプレートの貫通孔、24…他方のエンドプレート、25…長ボルト、100…プレート式熱交換器、101…伝熱プレート、102…第一貫通孔、103…第二貫通孔、104…第三貫通孔、105…第四貫通孔、A…第一流体、B…第二流体、C…中心軸、C1、C2…仮想線、Fa…第一流路、Fa1…第一流体供給路、Fa2…第一流体排出路、Fb…第二流路、Fb1…第二流体供給路、Fb2…第二流体排出路、G…隙間、Ra…第一流路、Ra1…連通空間、Ra2…第一流体排出路、RaO…上流端開口部(開口部)、Rb…第二流路、Rb1…第二流体供給路、Rb2…第二流体排出路、S…中空部、S1…内部空間、α…分配器の外径、β…第一孔の内径、γ…第一流路を規定する二つの伝熱プレート間の寸法 1 ... Heat exchanger, 2 ... Heat exchanger body, 5 ... Distributor, 50 ... Cylindrical part, 51 ... Outer tubular part (cylindrical part), 51a ... Outer peripheral surface of outer tubular part, 51b ... Outer cylinder Inner peripheral surface of the shape portion 511 ... Through hole of the outer tubular portion, 52 ... Inner tubular portion, 52a ... Outer peripheral surface of the inner tubular portion, 52b ... Inner peripheral surface of the inner tubular portion 521 ... Groove, 53 ... Inflow opening, 55 ... Intermediate tubular part, 6 ... Distribution flow path, 601 ... Inflow opening (opening), 602 ... First connection flow path, 603 ... First distribution part (distribution part), 6031 ... First Distributor inlet (distributor inlet), 6031a, 6031b ... first distributor inlet, 6032 ... one side outlet (one side distributor outlet), 6033 ... other side outlet (other side distributor outlet), 604 ... first distribution Flow path, 604a ... One first distribution flow path, 604b ... The other first distribution flow path, 605 ... Circumferential distribution section, 6051 ... Circumferential distribution section inlet, 6052 ... One side outlet, 6053 ... Other side outlet, 606 ... Circumferential distribution flow path, 606a ... One circumferential distribution flow path, 606b ... The other circumferential distribution flow path, 607 ... Second distribution section, 6071 ... Second distribution section inlet, 6072 ... One side outlet, 6073 ... the other side outlet, 608 ... second distribution flow path, 608a ... one second distribution flow path, 608b ... the other second distribution flow path, 609 ... second connection flow path, 610 ... third distribution section, 6101 ... Third distribution section inlet, 6102 ... one side outlet, 6103 ... other side outlet, 611 ... third distribution flow path, 611a ... one third distribution flow path, 611b ... other third distribution flow path, 612 ... third Connection flow path, 613 ... 4th distribution section, 6131 ... 4th distribution section inlet, 6132 ... one side outlet, 6133 ... other side outlet, 614 ... 4th distribution flow path, 614a ... one 4th distribution flow path, 614b ... the other fourth distribution flow path, 615 ... fourth connection flow path, 616 ... outflow part, 7 ... direction changing member, 70 ... main body, 71 ... first opening, 72 ... second opening, 21 ... heat transfer plate, 21A ... Heat transfer plate group, 211 ... First hole (through hole), 212 ... Second hole, 213 ... Third hole, 214 ... Fourth hole, 22 ... Gasket, 23 ... One end plate, 231, 232, 233, 234 ... One end plate through hole, 24 ... The other end plate, 25 ... Long bolt, 100 ... Plate heat exchanger, 101 ... Heat transfer plate, 102 ... First through hole, 103 ... Second penetration Hole, 104 ... Third through hole, 105 ... Fourth through hole, A ... First fluid, B ... Second fluid, C ... Central axis, C1, C2 ... Virtual line, Fa ... First flow path, Fa1 ... First Fluid supply path, Fa2 ... First fluid discharge path, Fb ... second flow path, Fb1 ... second fluid supply path, Fb2 ... second fluid discharge path, G ... gap, Ra ... first flow path, Ra1 ... communication space, Ra2 ... first fluid discharge path, RaO ... upstream end Opening (opening), Rb ... second flow path, Rb1 ... second fluid supply path, Rb2 ... second fluid discharge path, S ... hollow part, S1 ... internal space, α ... outer diameter of distributor, β ... Inner diameter of the first hole, γ ... Dimensions between two heat transfer plates that define the first flow path

Claims (5)

  1.  それぞれが所定方向と直交する面方向に広がる複数の伝熱プレートを有し、これら複数の伝熱プレートが前記所定方向に重ね合わされていることによって第一流体を流通させる第一流路と第二流体を流通させる第二流路とが各伝熱プレートを境に交互に並ぶように複数の第一流路と少なくとも一つの第二流路とが形成されている熱交換器本体と、
     前記第一流体を前記複数の第一流路に分配する分配器と、を備え、
     前記複数の伝熱プレートのうちの連続して並ぶ二つ以上の伝熱プレートのそれぞれは、前記所定方向から見て相互に重なる位置に貫通孔を有し、
     前記連続して並ぶ二つ以上の伝熱プレートは、各貫通孔が前記所定方向に連なることによって各第一流路と連通する連通空間を形成し、
     前記分配器は、前記連通空間内において前記所定方向に延び且つ前記熱交換器本体の外部から供給される前記第一流体が流通する中空部を囲む筒状壁であって、該筒状壁の厚さ方向に積層される複数の筒状部を備える筒状壁を有し、
     前記筒状壁は、前記複数の筒状部のうちの前記厚さ方向に連続して重なる二つ以上の筒状部内に前記第一流体が流通可能な分配流路を有し、
     前記分配流路は、
      前記中空部から該分配流路に流入した前記第一流体を前記所定方向の一方と他方とに分配する分配部であって、前記第一流体が前記一方に流出する一方側分配部出口及び前記第一流体が前記他方に流出する他方側分配部出口を含む分配部と、
      前記一方側分配部出口又は前記他方側分配部出口と直接又は間接にそれぞれ連通すると共に、少なくとも前記厚さ方向における最も外側の筒状部を貫通することにより前記連通空間又は前記第一流路とそれぞれ連通する複数の流出部と、を含み、
     前記複数の流出部は、前記所定方向に間隔をあけて配置されている、プレート式熱交換器。
    Each has a plurality of heat transfer plates extending in a plane direction orthogonal to a predetermined direction, and the plurality of heat transfer plates are superposed in the predetermined direction to allow the first fluid to flow through the first flow path and the second fluid. A heat exchanger body in which a plurality of first flow paths and at least one second flow path are formed so that the second flow paths for circulating the fluid are alternately arranged with each heat transfer plate as a boundary.
    A distributor that distributes the first fluid to the plurality of first flow paths is provided.
    Each of the two or more heat transfer plates arranged in succession among the plurality of heat transfer plates has through holes at positions where they overlap each other when viewed from the predetermined direction.
    The two or more heat transfer plates arranged in succession form a communication space in which each through hole is connected in the predetermined direction to communicate with each first flow path.
    The distributor is a tubular wall that surrounds a hollow portion that extends in the predetermined direction in the communication space and through which the first fluid supplied from the outside of the heat exchanger body flows, and is a tubular wall of the tubular wall. It has a tubular wall with a plurality of tubular portions stacked in the thickness direction,
    The tubular wall has a distribution flow path through which the first fluid can flow in two or more tubular portions that are continuously overlapped in the thickness direction among the plurality of tubular portions.
    The distribution channel is
    A distribution unit that distributes the first fluid that has flowed into the distribution flow path from the hollow portion to one and the other in the predetermined direction, and is an outlet of the one-side distribution unit through which the first fluid flows out to the one and the said. A distributor including the outlet of the other side where the first fluid flows out to the other,
    Directly or indirectly communicate with the outlet of the one-side distribution unit or the outlet of the other-side distribution unit, and penetrate the outermost tubular portion in at least the thickness direction to communicate with the communication space or the first flow path, respectively. Including multiple outflow parts that communicate
    A plate-type heat exchanger in which the plurality of outflow portions are arranged at intervals in the predetermined direction.
  2.  前記分配流路は、前記中空部と連通する開口部と、前記筒状壁の周方向に沿って延びると共に前記開口部と前記分配部とを接続する接続流路と、を含む、請求項1に記載のプレート式熱交換器。 1. The distribution flow path includes an opening communicating with the hollow portion and a connection flow path extending along the circumferential direction of the tubular wall and connecting the opening and the distribution section. The plate heat exchanger described in.
  3.  前記分配部は、前記中空部と連通して該中空部から該分配部に前記第一流体を流入させる分配部入口を含み、
     前記分配器は、前記筒状壁の前記中空部における前記分配部入口と対応する位置に配置される方向変更部材を有し、
     前記方向変更部材は、前記中空部と前記分配部入口とを連通させ且つ前記第一流体が流通可能な内部空間を有し、該内部空間を通過させることによって前記第一流体の流れ方向を前記分配部入口位置における前記筒状壁の厚さ方向に沿った向きにする、請求項1に記載のプレート式熱交換器。
    The distribution unit includes a distribution unit inlet that communicates with the hollow portion and allows the first fluid to flow into the distribution unit from the hollow portion.
    The distributor has a direction changing member arranged at a position corresponding to the inlet of the distributor in the hollow portion of the tubular wall.
    The direction changing member has an internal space in which the hollow portion and the inlet of the distribution portion are communicated with each other and through which the first fluid can flow, and the flow direction of the first fluid is changed by passing through the internal space. The plate heat exchanger according to claim 1, which is oriented along the thickness direction of the tubular wall at the inlet position of the distribution unit.
  4.  前記熱交換器本体は、前記連通空間と前記第一流路との境界位置に、該連通空間から該第一流路に前記第一流体が流入するときに通過する開口部を有し、
     各開口部では、前記熱交換器本体において前記第一流体が流通したときに前記連通空間と前記第一流路との間で差圧が生じる、請求項1~3のいずれか1項に記載のプレート式熱交換器。
    The heat exchanger main body has an opening at a boundary position between the communication space and the first flow path, through which the first fluid passes when the first fluid flows from the communication space into the first flow path.
    The one according to any one of claims 1 to 3, wherein a differential pressure is generated between the communication space and the first flow path when the first fluid flows through the heat exchanger body at each opening. Plate heat exchanger.
  5.  それぞれが所定方向と直交する面方向に広がる複数の伝熱プレートを有し、これら複数の伝熱プレートが前記所定方向に重ね合わされていることによって第一流体を流通させる第一流路と第二流体を流通させる第二流路とが各伝熱プレートを境に交互に並ぶように複数の第一流路と少なくとも一つの第二流路とが形成されている熱交換器本体を備えるプレート式熱交換器において、前記複数の伝熱プレートのうちの連続して並ぶ二つ以上の伝熱プレートのそれぞれが有する貫通孔が前記所定方向に連なることによって形成される連通空間であって各第一流路と連通する連通空間に配置することにより、前記第一流体を前記複数の第一流路に分配可能なプレート熱交換器用の分配器であって、
     前記連通空間に配置されたときに、前記所定方向に延び且つ前記プレート式熱交換器の外部から供給される前記第一流体が流通する中空部を囲む筒状壁を備え、
     前記筒状壁は、該筒状壁の厚さ方向に重なる複数の筒状部を備えると共に、前記複数の筒状部のうちの前記厚さ方向に連続して重なる二つ以上の筒状部内に前記第一流体が流通可能な分配流路を有し、
     前記分配流路は、
      前記中空部から該分配流路に流入した前記第一流体を前記所定方向の一方と他方とに分配する分配部であって、前記第一流体が前記一方に流出する一方側分配部出口及び前記第一流体が前記他方に流出する他方側分配部出口を含む分配部と、
      前記一方側分配部出口又は前記他方側分配部出口と直接又は間接にそれぞれ連通すると共に、少なくとも前記厚さ方向における最も外側の筒状部を貫通することで前記連通空間又は前記第一流路と連通可能な複数の流出部と、を含み、
     前記複数の流出部は、前記所定方向に間隔をあけて配置されている、プレート式熱交換器用の分配器。
    Each has a plurality of heat transfer plates extending in a plane direction orthogonal to a predetermined direction, and the plurality of heat transfer plates are superposed in the predetermined direction to allow the first fluid to flow through the first flow path and the second fluid. A plate-type heat exchange having a heat exchanger body in which a plurality of first flow paths and at least one second flow path are formed so that the second flow paths for circulating the fluid are alternately arranged with each heat transfer plate as a boundary. In the vessel, it is a communication space formed by connecting through holes of each of two or more heat transfer plates that are continuously arranged among the plurality of heat transfer plates in the predetermined direction, and is a communication space formed with each first flow path. A distributor for a plate heat exchanger capable of distributing the first fluid to the plurality of first flow paths by arranging the first fluid in a communicating space.
    A tubular wall that surrounds a hollow portion that extends in the predetermined direction and through which the first fluid is supplied from the outside of the plate heat exchanger when arranged in the communication space is provided.
    The tubular wall includes a plurality of tubular portions that overlap in the thickness direction of the tubular wall, and in two or more tubular portions that continuously overlap in the thickness direction of the plurality of tubular portions. Has a distribution channel through which the first fluid can flow.
    The distribution channel is
    A distribution unit that distributes the first fluid that has flowed into the distribution flow path from the hollow portion to one and the other in the predetermined direction, and is an outlet of the one-side distribution unit through which the first fluid flows out to the one and the said. A distributor including the outlet of the other side where the first fluid flows out to the other,
    It communicates directly or indirectly with the outlet of the one-side distribution section or the outlet of the other-side distribution section, and communicates with the communication space or the first flow path by penetrating at least the outermost tubular portion in the thickness direction. Including multiple outflows possible
    A distributor for a plate heat exchanger in which the plurality of outflow portions are arranged at intervals in the predetermined direction.
PCT/JP2020/021530 2019-06-05 2020-06-01 Plate heat exchanger and distributor for plate heat exchanger WO2020246412A1 (en)

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JPH0486492A (en) * 1990-07-31 1992-03-19 Hisaka Works Ltd Plate type heat exchanger
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