JP3543992B2 - Plate heat exchanger - Google Patents

Plate heat exchanger Download PDF

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Publication number
JP3543992B2
JP3543992B2 JP5696094A JP5696094A JP3543992B2 JP 3543992 B2 JP3543992 B2 JP 3543992B2 JP 5696094 A JP5696094 A JP 5696094A JP 5696094 A JP5696094 A JP 5696094A JP 3543992 B2 JP3543992 B2 JP 3543992B2
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JP
Japan
Prior art keywords
plate
transfer surface
heat transfer
beads
heat exchanger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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JP5696094A
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Japanese (ja)
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JPH07260386A (en
Inventor
淳一 中村
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Hisaka Works Ltd
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Hisaka Works Ltd
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    • 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
    • F28F3/02Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/046Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
    • 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
    • F28D9/0031Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/005Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00Reinforcing means
    • F28F2225/04Reinforcing means for conduits

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

Abstract

PURPOSE:To prevent the extension change of beads, control the decrease of pressure-proof performance and use a heat exchanger with high pressure by forming reinforcing grooves continuously extending in the direction perpendicular to and intersecting the beads on the heat transfer surface of a waveform shaped plate on which the beads are provided in parallel. CONSTITUTION:A plate 6 made of a rectangular metal plate comprises openings 2 as inlets/outlets of a fluid at four corner parts of the plate and a waveform shaped heat transfer surface 4 on which herring bone beads 3 falling slantwise to both sides from a center line are provided in parallel in an intermediate part. Gaskets 5 through which the openings 2 communicate with the heat transfer surface 4 or are interrupted therefrom are alternately rotated. That is, they are vertically reversed and laminated. Thus, a plate type heat exchanger is constructed. In this case, on the heat transfer surface 4 of the plate 6, reinforcing grooves 7 extending perpendicularly to and intersecting the beads 3 are formed throughout the entire length in the horizontal direction of the heat transfer surface 4. Thus, the extension change of the beads 3 in their perpendicular direction is prevented, so that the decrease of pressure-proof performance is controlled.

Description

【0001】
【産業上の利用分野】
本発明は、複数のプレートを積層してなるプレート式熱交換器に関するものである。
【0002】
【従来の技術】
一般に、プレート式熱交換器は、複数のプレートを積層してプレート相互間に複数の流路を形成し、これらの流路に異種の流体を交互に流通して両流体間でプレートを介して熱交換する構成となっている。
【0003】
図6はプレート式熱交換器に使用するヘリンボーンタイプのプレート(1)を示す。このプレート(1)は、矩形の金属板の四隅部に流体の出入口となる開口(2)を形成し、中間部にプレート縦方向中心線から両側方に向って斜降せるヘリンボーン状のビード(3)を並列に装設して波形状の伝熱面(4)を形成したもので、一側上下の開口(2)を伝熱面(4)と連通し、かつ、他側上下の開口(2)を伝熱面(4)と連通しないように合成ゴム等の耐熱性を有する弾性材から製作されたガスケット(5)を装着し、これを交互に平面上で180°回転させて、即ち、上下反転させて順次積層することによってプレート式熱交換器を形成している。
【0004】
上記プレート(1)は、上述したように、伝熱面(4)をヘリンボーン状のビード(3)を並列に装設して波形状に形成することにより、熱交換時の伝熱性能の向上を図るとともに、交互に上下反転させて順次積層したときに隣接するプレート(1)の伝熱面(4)に形成したビード(3)同士を交差した状態でお互いに当接させて耐圧強度の向上を図るようにしている。
【0005】
【発明が解決しようとする課題】
ところで、プレート式熱交換器に使用するプレート(1)の伝熱面(4)は、ヘリンボーン状のビード(3)を並列に装設して波形状に形成されているため、伝熱面(4)への圧力(P)は、図7に示すように、ビード(3)の直交方向に影響を及ぼす。そのため、大きな圧力で使用すると、ビード(3)の直交方向に微小な伸び変形が生じ、プレート(1)全体では数多くのビード(3)が装設されているため、1つのビード(3)の微小な伸び変形は累積されて大きな伸び変形となる。従って、プレート(1)の伝熱面(4)にはビード(3)と直交する方向で大きな伸び変形が生じる。そのため、プレート(1)を交互に上下反転させて順次積層した場合、伸び変形部分が異なってプレート相互間の当り点(支持点)を確保できなかったり、ガスケットシール面のズレ等による耐圧性能の低下を避けられない。これに対処するため、プレート式熱交換器をプレート(1)のビード(3)に伸び変形が生じない範囲内の小さな圧力で使用しなければならない問題がある。
【0006】
本発明は、上記問題点に鑑みて提案されたもので、耐圧性能の低下を避けて大きな圧力で使用できるプレート式熱交換器を提供することを目的としている。
【0007】
【課題を解決するための手段】
本発明に係るプレート式熱交換器は上記目的を達するため、四隅部に流体の出入口となる開口が形成され、中間部にへリンボーン状のビードを並列に装設して波形状に形成した伝熱面が形成され、一側上下の開口を伝熱面と連通し、かつ他側上下の開口を伝熱面と連通しないようにガスケットを装着したプレートを交互に上下反転させて積層し、隣接するプレートの伝熱面に装設したビード同士を交差した状態で互いに当接させてなり、プレート相互間に異種の流体を交互に流通させる流路を備え、両流体間でプレートを介して熱交換をするプレート式熱交換器において、上記プレートの伝熱面に、上記ヘリンボーン状のビードと概ね直交する方向に、複数のビードを連続して横断する補強溝を装設し、上記補強溝の深さをビードの高さの約2分の1にしたことを特徴とするものである。
【0008】
【作用】
プレートの伝熱面にビードと概ね直交する方向に複数のビードを連続して横断する補強溝を装設し、上記補強溝の深さをビードの高さの約2分の1にしたので、ビードの直交方向への伸び変化が補強溝により防止されてプレート全体としてビードと直交する方向への伸び変化量を少なく抑えることができる。
【0009】
【実施例】
以下、本発明に係るプレート式熱交換器の実施例を図1〜図5に基づいて説明する。尚、図6に示したものと同一部分には同一符号を付してその説明を省略する。
【0010】
図1および図2は本発明に係るプレート式熱交換器の一実施例を示すもので、図1は本発明のプレート式熱交換器に使用するプレート(6)の平面図を示すものであり、図2はそのプレート(6)の図1におけるA−A線の拡大断面図を示すものである。
【0011】
本発明のプレート式熱交換器は、図1に示すように、プレート(6)の伝熱面(4)に、ビード(3)と直交する方向に連続してビード(3)を横断する補強溝(7)を、伝熱面(4)の横方向の全長に亘り一連に装設したもので、この補強溝(7)は圧力によるビード(3)の直交方向への変形が殆ど生じない。
【0012】
本発明のプレート式熱交換器においては、プレート(6)の伝熱面(4)にビード(3)と直交する方向に連続してビード(3)を横断する補強溝(7)を装設したので、ビード(3)の直交方向に圧力により伸び変形が生じようとした場合、補強溝(7)は圧力によりビード(3)の直交方向に殆ど伸び変形しないため、ビード(3)の直交方向への伸び変形が補強溝(7)により防止されてビード(3)の直交方向には容易に伸び変形が生じることがない。そのため、大きな圧力で使用しても、プレート(6)全体としてビード(3)と直交する方向への伸び変形量が微小であり、プレート相互間の当り点を確保できるとともに、ガスケットシール面のズレも防止できて耐圧性能の低下を避けることができる。従って、プレート式熱交換器を大きな圧力で使用することが可能である。
【0013】
尚、上記実施例では、伝熱面(4)の横方向に連続して補強溝(7)を装設しているが、これに限られることなく、補強溝(7)を部分的に装設してよい。また、図1に示すように、補強溝(7)を2列に設定しているが、これに限られることなく、2列以外の複数列に設定したり、単数列に設定することもできる。更に、図2に示すように、補強溝(7)の深さをビード(3)の高さと同一に設定しているが、これに限られることなく、ビード(3)の高さの範囲で任意に設定することができる。例えば、図3は、補強溝(7)の深さをビード(3)の高さの約2分の1に設定した場合である。
【0014】
図4は本発明の他の実施例のプレート式熱交換器に使用するプレート(8)の平面図を示すもので、これはプレート(8)の伝熱面(4)に、ビード(3)と直交する方向に部分的に連続してビード(3)を横断する複数の補強溝(9)を、伝熱面(4)の横方向に配列して装設したものであり、ビード(3)の直交方向への伸び変形を補強溝(9)により防止してプレート(8)全体としてビード(3)と直交する方向への伸び変形量を少なく抑えるようにしている。
【0015】
尚、本実施例では、伝熱面(4)の横方向に配列して装設された複数の補強溝(9)を2段に設定しているが、これに限られることなく、2段以外の複数段に設定したり、単数段に設定することもできる。また、補強溝(9)の深さは、ビード(3)の高さの範囲で任意に設定することができる。
【0016】
図5は更に他の実施例のプレート式熱交換器に使用するプレート(10)の平面図を示すもので、これはプレート(10)の伝熱面(4)に、水平方向に連続してビード(3)を横断する補強溝(11)を、伝熱面(4)の横方向の全長に亘り一連に装設したものであり、ビード(3)の直交方向への伸び変形を補強溝(11)により防止させてプレート(10)全体としてビード(3)と直交する方向への伸び変形量を少なく抑えるようにしている。本実施例においては、補強溝(11)のビード(3)との直交性が、図1〜図4に示す実施例に比べて悪いため、補強溝(11)のビード(3)の直交方向への伸び変化の防止効果は若干劣るが、金型の加工が容易で製作コストを安く抑えることができる。
【0017】
尚、本実施例では、伝熱面(4)の横方向に連続して補強溝(11)を装設しているが、これに限られることなく、補強溝(11)を部分的に装設してよい。また、補強溝(11)を2列に設定しているが、これに限られることなく、2列以外の複数列に設定したり、単数列に設定することもできる。更に、補強溝(11)の深さは、ビード(3)の高さの範囲で任意に設定することができる。
【0018】
【発明の効果】
以上説明したように、本発明は、へリンボーン状のビードを並列に装設して波形状に形成した伝熱面を有するプレートの上記伝熱面に、上記ヘリンボーン状のビードと概ね直交する方向に、複数のビードを連続して横断する補強溝を装設し、上記補強溝の深さをビードの高さの約2分の1としたから、ビードの直交方向への伸び変化が補強溝により防止される。そのため、大きな圧力で使用しても、プレート全体としてビードと直交する方向への伸び変化量は微小であり、これによってプレート相互間の当り点を確保できるとともに、ガスケットシール面のズレも防止できて耐圧性能の低下を避けることができ、熱交換を何等支障なく行うことができる。
【図面の簡単な説明】
【図1】本発明のプレート式熱交換器に使用するプレートの平面図を示す。
【図2】図1のA−A線における拡大断面図を示す。
【図3】図2における補強溝の深さの変形例を示す。
【図4】本発明の他の実施例のプレート式熱交換器に使用するプレートの平面図を示す。
【図5】本発明のさらに他の実施例のプレート式熱交換器に使用するプレートの平面図を示す。
【図6】従来のプレート式熱交換器に使用するプレートの平面図を示す。
【図7】図6のB−B線における拡大断面図を示す。
【符号の説明】
2 開口
3 ビート
4 伝熱面
5 ガスケット
6 プレート
7 補強溝
8 プレート
9 補強溝
10 プレート
11 補強溝
[0001]
[Industrial applications]
TECHNICAL FIELD The present invention relates to a plate heat exchanger formed by stacking a plurality of plates.
[0002]
[Prior art]
In general, a plate heat exchanger is formed by laminating a plurality of plates to form a plurality of flow passages between the plates, alternately flowing different kinds of fluids through these flow passages, and passing the plates between the two fluids. It is configured to exchange heat.
[0003]
FIG. 6 shows a herringbone type plate (1) used in a plate heat exchanger. The plate (1) has openings (2) serving as fluid entrances and exits at four corners of a rectangular metal plate, and a herringbone-shaped bead ( 3) are provided in parallel to form a wave-shaped heat transfer surface (4), and the upper and lower openings (2) communicate with the heat transfer surface (4) on one side and the upper and lower openings on the other side. A gasket (5) made of a heat-resistant elastic material such as synthetic rubber is attached so that (2) does not communicate with the heat transfer surface (4), and this is alternately rotated 180 ° on a plane, That is, the plate type heat exchanger is formed by sequentially turning upside down and stacking.
[0004]
As described above, the plate (1) has a heat transfer surface (4) provided with a herringbone-shaped bead (3) in parallel and formed in a corrugated shape, thereby improving heat transfer performance during heat exchange. In addition, the beads (3) formed on the heat transfer surface (4) of the adjacent plate (1) when they are alternately turned upside down and successively laminated are brought into contact with each other in a state where they intersect with each other, so that the pressure resistance is improved. I try to improve.
[0005]
[Problems to be solved by the invention]
By the way, the heat transfer surface (4) of the plate (1) used in the plate heat exchanger is formed in a wavy shape by mounting the herringbone-shaped beads (3) in parallel. The pressure (P) on 4) affects the orthogonal direction of the bead (3), as shown in FIG. Therefore, when used under a large pressure, a slight elongation deformation occurs in the direction orthogonal to the beads (3), and a large number of beads (3) are provided on the entire plate (1), so that one bead (3) The minute elongation deformation is accumulated and becomes large elongation deformation. Therefore, a large elongation deformation occurs on the heat transfer surface (4) of the plate (1) in a direction orthogonal to the bead (3). For this reason, when the plates (1) are alternately turned upside down and stacked one after the other, the contact points (support points) between the plates cannot be secured due to different stretch deformation portions, and the pressure resistance performance due to the displacement of the gasket seal surface and the like is reduced. The decline is inevitable. In order to cope with this, there is a problem that the plate type heat exchanger must be used at a small pressure within a range where the beads (3) of the plate (1) do not stretch and deform.
[0006]
The present invention has been proposed in view of the above problems, and an object of the present invention is to provide a plate heat exchanger that can be used at a large pressure while avoiding a decrease in pressure resistance.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the plate heat exchanger according to the present invention has openings at the four corners serving as inlets and outlets for fluid, and has a corrugated bead formed in parallel in the middle to form a wave-shaped bead. A heat surface is formed, and plates with gaskets are alternately turned upside down so that the upper and lower openings communicate with the heat transfer surface, and the upper and lower openings do not communicate with the heat transfer surface. The beads provided on the heat transfer surface of the plate to be brought into contact with each other in a state of intersecting with each other, and a flow path for alternately flowing different kinds of fluids between the plates is provided. In the plate-type heat exchanger to be exchanged, on the heat transfer surface of the plate, a reinforcing groove that continuously traverses a plurality of beads is provided in a direction substantially orthogonal to the herringbone-shaped bead . Depth is about the height of the bead It is characterized in that the amount of 1.
[0008]
[Action]
Since a reinforcing groove that continuously traverses a plurality of beads in a direction substantially orthogonal to the bead was provided on the heat transfer surface of the plate, and the depth of the reinforcing groove was reduced to about half the height of the bead , The change in the elongation of the bead in the orthogonal direction is prevented by the reinforcing groove, and the amount of the elongation change in the direction orthogonal to the bead as the whole plate can be suppressed.
[0009]
【Example】
Hereinafter, an embodiment of a plate heat exchanger according to the present invention will be described with reference to FIGS. The same parts as those shown in FIG. 6 are denoted by the same reference numerals, and description thereof will be omitted.
[0010]
1 and 2 show an embodiment of the plate heat exchanger according to the present invention, and FIG. 1 shows a plan view of a plate (6) used in the plate heat exchanger of the present invention. FIG. 2 is an enlarged sectional view of the plate (6) taken along line AA in FIG.
[0011]
As shown in FIG. 1, the plate heat exchanger of the present invention has a reinforcement on the heat transfer surface (4) of the plate (6) so as to continuously cross the bead (3) in a direction orthogonal to the bead (3). The groove (7) is provided in a series over the entire length of the heat transfer surface (4) in the lateral direction, and the reinforcing groove (7) hardly deforms the bead (3) in the orthogonal direction due to pressure. .
[0012]
In the plate heat exchanger according to the present invention, the heat transfer surface (4) of the plate (6) is provided with a reinforcing groove (7) that continuously crosses the bead (3) in a direction orthogonal to the bead (3). Therefore, when the deformation is caused by the pressure in the direction perpendicular to the bead (3), the reinforcing groove (7) hardly expands and deforms in the direction perpendicular to the bead (3) by the pressure. The extension deformation in the direction is prevented by the reinforcing groove (7), and the extension deformation is not easily generated in the direction orthogonal to the bead (3). Therefore, even when the plate (6) is used under a large pressure, the amount of elongation deformation in the direction orthogonal to the bead (3) is small as a whole, and a contact point between the plates can be secured, and the gap of the gasket seal surface is displaced. Can also be prevented, and a decrease in pressure resistance can be avoided. Therefore, it is possible to use the plate heat exchanger at a large pressure.
[0013]
In the above embodiment, the reinforcing groove (7) is provided continuously in the lateral direction of the heat transfer surface (4). However, the present invention is not limited to this, and the reinforcing groove (7) is partially provided. May be set up. Further, as shown in FIG. 1, the reinforcing grooves (7) are set in two rows, but the present invention is not limited to this, and the reinforcing grooves (7) can be set in a plurality of rows other than two rows or in a single row. . Further, as shown in FIG. 2, the depth of the reinforcing groove (7) is set to be the same as the height of the bead (3), but is not limited to this, and is within the range of the height of the bead (3). It can be set arbitrarily. For example, FIG. 3 shows a case where the depth of the reinforcing groove (7) is set to about one half of the height of the bead (3).
[0014]
FIG. 4 is a plan view of a plate (8) used in a plate heat exchanger according to another embodiment of the present invention. The plate (8) has a heat transfer surface (4) and a bead (3). A plurality of reinforcing grooves (9) partially and continuously traversing the bead (3) in a direction perpendicular to the heat transfer surface (4). 2) is prevented by the reinforcing groove (9) by the reinforcing groove (9), so that the amount of elongation deformation in the direction orthogonal to the bead (3) is reduced as a whole of the plate (8).
[0015]
In this embodiment, the plurality of reinforcing grooves (9) arranged and arranged in the lateral direction of the heat transfer surface (4) are set in two stages, but the present invention is not limited to this. It can be set to multiple stages other than the above, or can be set to a single stage. The depth of the reinforcing groove (9) can be set arbitrarily within the range of the height of the bead (3).
[0016]
FIG. 5 shows a plan view of a plate (10) used in a plate heat exchanger of still another embodiment, which is horizontally continuous with a heat transfer surface (4) of the plate (10). A reinforcing groove (11) traversing the bead (3) is provided in a series over the entire length of the heat transfer surface (4) in the lateral direction. This is prevented by (11), so that the amount of elongation deformation in the direction orthogonal to the bead (3) is reduced as a whole of the plate (10). In this embodiment, since the orthogonality of the reinforcing groove (11) with the bead (3) is worse than that of the embodiment shown in FIGS. 1 to 4, the orthogonal direction of the bead (3) of the reinforcing groove (11) is used. Although the effect of preventing the change in elongation is slightly inferior, the processing of the mold is easy and the production cost can be reduced.
[0017]
In this embodiment, the reinforcing groove (11) is provided continuously in the lateral direction of the heat transfer surface (4). However, the present invention is not limited to this, and the reinforcing groove (11) is partially provided. May be set up. Further, although the reinforcing grooves (11) are set in two rows, the present invention is not limited to this, and the reinforcing grooves (11) may be set in a plurality of rows other than two rows or in a single row. Further, the depth of the reinforcing groove (11) can be arbitrarily set within the range of the height of the bead (3).
[0018]
【The invention's effect】
As described above, the present invention provides a heat transfer surface of a plate having a heat transfer surface formed in a wavy shape by mounting herringbone-shaped beads in parallel, in a direction substantially orthogonal to the herringbone-shaped bead. In addition, a reinforcing groove is provided which continuously traverses a plurality of beads, and the depth of the reinforcing groove is set to about one half of the height of the bead. Is prevented . Therefore , even when used at a high pressure, the amount of change in elongation in the direction perpendicular to the bead as a whole plate is very small. As a result, a decrease in pressure resistance performance can be avoided, and heat exchange can be performed without any trouble.
[Brief description of the drawings]
FIG. 1 shows a plan view of a plate used in the plate heat exchanger of the present invention.
FIG. 2 is an enlarged sectional view taken along line AA of FIG.
FIG. 3 shows a modification of the depth of the reinforcing groove in FIG.
FIG. 4 is a plan view of a plate used in a plate heat exchanger according to another embodiment of the present invention.
FIG. 5 is a plan view of a plate used in a plate heat exchanger according to still another embodiment of the present invention.
FIG. 6 is a plan view of a plate used in a conventional plate heat exchanger.
FIG. 7 is an enlarged sectional view taken along line BB of FIG. 6;
[Explanation of symbols]
2 opening 3 beat 4 heat transfer surface 5 gasket 6 plate 7 reinforcing groove 8 plate 9 reinforcing groove
10 plates
11 Reinforcement groove

Claims (3)

四隅部に流体の出入口となる開口が形成され、中間部にへリンボーン状のビードを並列に装設して波形状に形成した伝熱面が形成され、一側上下の開口を伝熱面と連通し、かつ他側上下の開口を伝熱面と連通しないようにガスケットを装着したプレートを交互に上下反転させて積層し、隣接するプレートの伝熱面に装設したビード同士を交差した状態で互いに当接させてなり、プレート相互間に異種の流体を交互に流通させる流路を備え、両流体間でプレートを介して熱交換をするプレート式熱交換器において、
上記プレートの伝熱面に、上記ヘリンボーン状のビードと概ね直交する方向に、複数のビードを連続して横断する補強溝を装設し、上記補強溝の深さをビードの高さの約2分の1にしたことを特徴とするプレート式熱交換器。
Openings are formed at the four corners to serve as inlets and outlets for fluids.Herringbone beads are installed in parallel in the middle to form a wave-shaped heat transfer surface. Plates with gaskets attached alternately upside down and stacked so that they communicate with each other and the upper and lower openings do not communicate with the heat transfer surface, and the beads mounted on the heat transfer surface of adjacent plates cross each other. In a plate heat exchanger that has a flow path for alternately flowing different kinds of fluids between the plates, and performs heat exchange between the two fluids through the plates,
A reinforcing groove is provided on the heat transfer surface of the plate so as to continuously traverse a plurality of beads in a direction substantially orthogonal to the herringbone-shaped bead, and the depth of the reinforcing groove is set to about 2 times the height of the bead. A plate type heat exchanger characterized in that it is reduced to one-half .
上記補強溝を、上記伝熱面の横方向の全長に亘り連続して単数列または複数列に装設したことを特徴とする請求項1のプレート式熱交換器。The plate heat exchanger according to claim 1, wherein the reinforcing grooves are provided in a single row or a plurality of rows continuously over the entire length of the heat transfer surface in the horizontal direction. 上記補強溝を、上記伝熱面の横方向に部分的に連続して単数列または複数列に装設したことを特徴とする請求項1のプレート式熱交換器。2. The plate heat exchanger according to claim 1, wherein the reinforcing grooves are provided in a single row or a plurality of rows in a manner that the reinforcing grooves are partially continuous in a lateral direction of the heat transfer surface.
JP5696094A 1994-03-28 1994-03-28 Plate heat exchanger Expired - Fee Related JP3543992B2 (en)

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