JP3639722B2 - Plate heat exchanger - Google Patents

Plate heat exchanger Download PDF

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Publication number
JP3639722B2
JP3639722B2 JP19839598A JP19839598A JP3639722B2 JP 3639722 B2 JP3639722 B2 JP 3639722B2 JP 19839598 A JP19839598 A JP 19839598A JP 19839598 A JP19839598 A JP 19839598A JP 3639722 B2 JP3639722 B2 JP 3639722B2
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Prior art keywords
plate
heat transfer
heat exchanger
fluid
container
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JP2000028289A (en
Inventor
富久 大内
満幸 内村
雅之 嶋村
泰男 浦木
浩伸 川村
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株式会社 日立インダストリイズ
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements 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

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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)

Description

【０００１】
【発明の属する技術分野】
本発明はプレート式熱交換器に関し、特に容器内に伝熱プレートを収納したプレート式熱交換器に関する。
【０００２】
【従来の技術】
容器内に伝熱プレートを収納したシェルアンドプレート式熱交換器は、例えば実用新案第2548607 号公報記載のように、複数の伝熱プレート板を容器内で配列させ、伝熱プレート間に流体を流動させることにより熱交換を行うものとされている。伝熱プレートには、流体の流路形成および組立後の強度向上のため、プレス成型された凹凸の表面形状を有するプレートが用いられる。
【０００３】
図４にプレートの表面形状の例を示す。同例における一対のプレート１およびプレート２は、杉矢型の凹部と凸部とが交互に形成されてなり、プレート１およびプレート２の表面形状は互いに線対称とされている。
【０００４】
プレート式熱交換器の流体回路構造は、プレート１およびプレート２を組み合わせた複数のプレート対を容器内に配列させ、隣接するプレート対を互いに接触させてなり、その断面形状を図５に示す。両外側のプレートはそれぞれ容器の側面に接触している。図５において、縦方向に連通する流体回路４の列が形成され、隣接する流体回路４において液絡することはない。このような構造により、異なる種類の流体を同時に熱交換することが可能となる。
【０００５】
ところが、従来のシェルアンドプレート式熱交換器は、プレート部とシェル容器との隙間部に流体流路が形成され、熱交換流体がショートパスして性能低下してしまう。これを軽減するために前記隙間を小さくするためにシェルとプレートとが接触するように組立てする工夫が行われているが、そのために組立ての手間が著しく増加してしまう欠点がある。
【０００６】
【発明が解決しようとする課題】
ところが、一般に流体の熱交換器は流動抵抗の大きい伝熱面の方が伝熱性能が高く、コンパクトにできる。シェルアンドプレート式熱交換器の場合、高性能な伝熱プレートは流動抵抗が大きく、一方、プレート部と容器との間の流路は抵抗が小さい。そのために熱交換流体がプレート部と容器との間の隙間流路を流れ、本来伝熱プレートの有している伝熱性能を十分生かせず、温度効率が低下するという欠点があった。むろん、プレート部と容器との間の流路を狭めること、プレート自体の波形形状を流動抵抗の小さいものに変更するなどの工夫が取られているが、より高性能のシェルアンドプレート熱交を提供するためには、以下の工夫が必要である。
【０００７】
１）プレートの波形は高性能の波形を使えること。
【０００８】
２）プレート伝熱面以外に流れる流体の流量をコントロールできること。
【０００９】
なお、プレート同士をブレージング溶接したプレート式熱交換器はプレート伝熱面以外に熱交換流体が流れないので、上記１）２）の条件を満足し、熱交換性能が優れてはいる。しかし、ブレージングのロウ材が伝熱プレートと異なる材料であるために、リサイクルにエネルギーを必要とし、結果的に資源の損失が大きい。
【００１０】
本発明の目的は、高性能な伝熱プレートの伝熱性能を十分生かせて、小型で高効率で、かつ、同種材料を使うために、資源リサイクルが容易なプレート式熱交換器を提供することにある。
【００１１】
【課題を解決するための手段】
上記目的は、両端にＡ流体が流れる第１連通孔とＢ流体が流れる第２連通孔を有し、表面に凹凸が成型された伝熱プレートを第１連通孔同士，第２連通孔同士が連通するように複数容器内に配列させると共に、各伝熱プレートの凸部を隣接する他の伝熱プレートの凸部に接触させて固定することにより流体流路を形成してなるプレート式熱交換器において、前記伝熱プレートを２枚一組で袋状に縁部を溶接して袋内にＡ流体を流す伝熱パネルとし、重ねられた該伝熱パネルの縁部を容器側とシールしてＢ流体を流す流路とすると共に、該Ｂ流体が流れる流路を、重ねられた伝熱パネルと容器との間に形成される流路とを絞り（オリフィス）を介して連通させる流路を設けることにより達成される。
【００１２】
また、上記目的は前記伝熱パネルと前記容器側面とが接触する容器側面に凹凸部を設けて、前記伝熱パネルと前記容器側面との間に流体流路を設けることにより達成される。
【００１３】
さらに、上記目的は前記伝熱パネルの縁部にプレートの凹凸部と同じ高さの膨らみ部を形成し、該伝熱パネルを重ねたときに前記膨らみ部同士が接触してシールさせる構造を設けることにより達成される。
【００１４】
さらにまた、上記目的は容器，伝熱プレート，棒状部材を同一種類の材料で構成することにより達成される。
【００１５】
【発明の実施の形態】
図１は本発明のプレート式熱交換器の流れ方向に直角な面の断面図である。図２にプレートの表面形状の例を示す。同例における一対のプレート１およびプレート２は、杉矢型の凹部と凸部とが交互に形成されてなる。図３に該伝熱プレートの部分断面を示すように、周縁部にはプレートの凹凸部と同じ高さの凸部膨らみ部３を形成されている。また、プレート１およびプレート２の表面形状は互いに線対称とされている。
【００１６】
図４に示すように、各伝熱プレート１及び２は対になり、伝熱プレート１の凸部と伝熱プレート２の凸部同士が互いに接触し、周辺凸部膨らみ部３は外側に来るように配置され、さらに、その縁部４は互いに溶接されて伝熱パネル５を構成している。この伝熱パネル５は容器６内に積み重ねられて、熱交換流体Ａが袋状の伝熱パネル５内に流され、熱交換流体Ｂが該伝熱パネル５同士が接触して形成される流路７に流される。この時、前記伝熱パネル５の外周側に配置された周辺凸部膨らみ部３は、伝熱パネル５同士の接触で形成される流路７と、伝熱パネル５とシェル容器６との隙間部に形成される隙間流路８とを、互いに往き来できないように隔絶するシール効果を発揮する。
【００１７】
しかし、パネル５内を流れる流体Ａは流体Ｂとはプレート並びにプレート同士の溶接によって確実に隔絶されているが、流体Ｂは伝熱パネル５同士の接触で形成される流路７と伝熱パネル５とシェル容器６との隙間部に形成される隙間流路８の両方を流れるようにすると共に、伝熱パネル５とシェル容器６との隙間部に形成される隙間流路８に流れる流量をコントロールするために、流体Ｂ液導入管９ａ，排出管９ｂに小孔，隙間，切り欠きなどの絞りオリフィス要素１０を設けて、伝熱パネル５とシェル容器６との隙間部に形成される隙間流路８とを連通させている。
【００１８】
これにより、伝熱パネル５とシェル容器６との隙間部に形成される隙間流路８を流れる流体Ｂの流量がコントロールされると共に、流体Ｂは主たる流路である伝熱パネル５同士が接触することにより膨らみ部３で周辺をシールされ、ヘリンボーン波形熱交換部が形成されている流路７に流れ、流体Ａと効率的に熱交換する。さらに、容器６，プレート１，２，線状部材，溶接部材は同一材料の鉄で構成されているので廃棄が容易である。
【００１９】
図６は本発明の他の実施例である。また、この例では容器側板１７と伝熱パネル５との間に棒状部材１３を配置して流路を設けた。防除初心材１３は容器６に一部溶接固定されている。これにより周辺流路８と同様に液が流れるので熱交換可能である。
【００２０】
図７は流体Ｂ導入ノズル２０に接続する個所の断面図である。第１連通孔２１と導入ノズル２０とを連絡する流体Ｂ導管９にオリフィス要素１０を設けてシェル容器６側の流路８と連通させているので、流体Ｂは該オリフィス要素１０を介して、コントロールされてＢ流体の一部がプレート部と容器との周辺隙間流路８を流れる。従って、短絡する量がコントロールされる。さらに、シェル容器６にＢ流体圧力がかかるので、伝熱パネル５の隙間流路７が膨らむことはない。外界との気密性は丈夫なシェル容器６が受け持つので気密性を高く維持できる。
【００２１】
【発明の効果】
高性能なプレートの伝熱面上を熱交換流体を流して、プレートと容器との隙間流路には流量コントロールして液を流し、かつ、容器側面に凸条・溝条・線条部材などにより流路を設けて端部プレートとの熱交換も行えるようにし、しかも、プレートを溶接接合してプレート材質とシェル材質を同種材料としたので、廃棄リサイクルが容易に行える効果を呈する。
【図面の簡単な説明】
【図１】本発明実施例であるプレート式熱交換器の流れ方向の断面図。
【図２】（ａ）及び（ｂ）は図１のプレートパターン例を示す平面図。
【図３】図１のプレート断面図。
【図４】図１のパネル断面図。
【図５】プレート式熱交換器の全体斜視図。
【図６】本発明の他の実施例であるプレート式熱交換器の断面図。
【図７】本発明の実施例であるプレート式熱交換器の部分断面図。
【符号の説明】
１，２…プレート、３…凸部膨らみ部、４…プレート縁部、５…伝熱パネル、６…シェル容器、７…流体Ｂ流路、８…周辺隙間流路、９…流体Ｂ液導入管、
１０…オリフィス要素、１１…凸条、１２…溝条、１３…棒状部材、１４…第１の膨らみ部、１５…くびれ部、１６…第２の膨らみ部、１７…容器側板、１８…容器端板、１９…流体Ａ導入ノズル、２０…流体Ｂ導入ノズル、２１…第１連通孔、２２…第２連通孔。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a plate heat exchanger, and more particularly to a plate heat exchanger in which a heat transfer plate is accommodated in a container.
[0002]
[Prior art]
A shell-and-plate heat exchanger in which a heat transfer plate is housed in a container, for example, as described in Utility Model No. 2548607, a plurality of heat transfer plate plates are arranged in a container, and fluid is transferred between the heat transfer plates. Heat exchange is performed by fluidizing. As the heat transfer plate, a press-formed plate having an uneven surface shape is used for forming a fluid flow path and improving the strength after assembly.
[0003]
FIG. 4 shows an example of the surface shape of the plate. The pair of plates 1 and 2 in the same example are formed by alternately forming cedar-shaped concave portions and convex portions, and the surface shapes of the plates 1 and 2 are made symmetrical with respect to each other.
[0004]
The fluid circuit structure of the plate heat exchanger is formed by arranging a plurality of plate pairs in which the plates 1 and 2 are combined in a container and bringing adjacent plate pairs into contact with each other. FIG. Both outer plates are in contact with the sides of the container. In FIG. 5, a row of fluid circuits 4 communicating in the vertical direction is formed, and there is no liquid junction in the adjacent fluid circuits 4. With such a structure, it is possible to simultaneously exchange heat between different types of fluids.
[0005]
However, in the conventional shell-and-plate heat exchanger, a fluid flow path is formed in the gap between the plate portion and the shell container, so that the heat exchange fluid is short-passed and performance is deteriorated. In order to alleviate this, a device for assembling so that the shell and the plate come into contact with each other in order to reduce the gap is devised, but there is a drawback that the labor for assembling increases remarkably.
[0006]
[Problems to be solved by the invention]
However, in general, a fluid heat exchanger has a higher heat transfer performance on a heat transfer surface having a larger flow resistance, and can be made compact. In the case of a shell-and-plate heat exchanger, a high-performance heat transfer plate has a high flow resistance, while a flow path between the plate portion and the container has a low resistance. For this reason, the heat exchange fluid flows through the gap flow path between the plate portion and the container, so that the heat transfer performance inherently possessed by the heat transfer plate cannot be fully utilized, and the temperature efficiency is lowered. Of course, measures such as narrowing the flow path between the plate part and the container and changing the corrugated shape of the plate itself to one with a low flow resistance have been taken. The following ingenuity is necessary to provide.
[0007]
1) The plate waveform must be a high-performance waveform.
[0008]
2) The flow rate of the fluid that flows outside the plate heat transfer surface can be controlled.
[0009]
In addition, since the plate-type heat exchanger in which the plates are brazed and welded does not flow heat exchange fluid other than the plate heat transfer surface, the above conditions 1) and 2) are satisfied, and the heat exchange performance is excellent. However, since the brazing brazing material is different from the heat transfer plate, energy is required for recycling, resulting in a large loss of resources.
[0010]
An object of the present invention is to provide a plate type heat exchanger that makes the best use of the heat transfer performance of a high performance heat transfer plate, is small and highly efficient, and uses the same kind of materials, so that resource recycling is easy. It is in.
[0011]
[Means for Solving the Problems]
The above-described object has a first communication hole through which fluid A flows and a second communication hole through which fluid B flows, and heat transfer plates having irregularities formed on the surface of the first communication holes and the second communication holes. Plate-type heat exchange that is arranged in a plurality of containers so as to communicate with each other and forms a fluid flow path by fixing the convex portion of each heat transfer plate in contact with the convex portion of another adjacent heat transfer plate A heat transfer panel in which a pair of two heat transfer plates are welded in a bag shape to flow A fluid in the bag, and the edge of the stacked heat transfer panel is sealed to the container side. A flow path for flowing the B fluid, and a flow path for communicating the flow path for the B fluid with a flow path formed between the stacked heat transfer panels and the container via an orifice (orifice). This is achieved by providing
[0012]
Further, the above object is achieved by providing an uneven portion on the side surface of the container where the heat transfer panel and the side surface of the container are in contact, and providing a fluid flow path between the heat transfer panel and the side surface of the container.
[0013]
Furthermore, the object is to form a bulge portion having the same height as the uneven portion of the plate at the edge of the heat transfer panel, and to provide a structure in which the bulge portions come into contact with each other and seal when the heat transfer panels are stacked. Is achieved.
[0014]
Furthermore, the above object is achieved by configuring the container, the heat transfer plate, and the rod-like member with the same kind of material.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a cross-sectional view of a plane perpendicular to the flow direction of the plate heat exchanger of the present invention. FIG. 2 shows an example of the surface shape of the plate. The pair of plates 1 and 2 in the same example are formed by alternately forming cedar-shaped concave portions and convex portions. As shown in the partial cross section of the heat transfer plate in FIG. 3, a convex bulge portion 3 having the same height as the concave and convex portion of the plate is formed at the peripheral edge. The surface shapes of the plate 1 and the plate 2 are axisymmetric with each other.
[0016]
As shown in FIG. 4, the heat transfer plates 1 and 2 are paired, the convex portions of the heat transfer plate 1 and the convex portions of the heat transfer plate 2 are in contact with each other, and the peripheral convex portion bulge portion 3 comes to the outside. Further, the edge portions 4 are welded to each other to form a heat transfer panel 5. The heat transfer panel 5 is stacked in a container 6 so that the heat exchange fluid A is flowed into the bag-shaped heat transfer panel 5 and the heat exchange fluid B is formed by contacting the heat transfer panels 5 with each other. It is sent to the road 7. At this time, the peripheral bulge bulging portion 3 disposed on the outer peripheral side of the heat transfer panel 5 includes a flow path 7 formed by contact between the heat transfer panels 5 and a gap between the heat transfer panel 5 and the shell container 6. The gap channel 8 formed in the portion is sealed so as to be isolated from each other.
[0017]
However, although the fluid A flowing through the panel 5 is reliably isolated from the fluid B by welding the plates and the plates, the fluid B is formed by contact between the heat transfer panels 5 and the heat transfer panel. 5 and the gap channel 8 formed in the gap part between the shell container 6 and the flow rate flowing through the gap channel 8 formed in the gap part between the heat transfer panel 5 and the shell container 6. In order to control, a narrow orifice, such as a small hole, a gap, and a notch, is provided in the fluid B liquid introduction pipe 9a and the discharge pipe 9b, and a gap formed in a gap between the heat transfer panel 5 and the shell container 6 The flow path 8 is communicated.
[0018]
Thereby, the flow rate of the fluid B flowing through the gap flow path 8 formed in the gap portion between the heat transfer panel 5 and the shell container 6 is controlled, and the fluid B is in contact with the heat transfer panels 5 which are main flow paths. As a result, the periphery is sealed by the bulge portion 3 and flows into the flow path 7 where the herringbone corrugated heat exchange portion is formed, and efficiently exchanges heat with the fluid A. Furthermore, since the container 6, plates 1 and 2, the linear member, and the welding member are made of the same iron material, disposal is easy.
[0019]
FIG. 6 shows another embodiment of the present invention. In this example, the rod-like member 13 is disposed between the container side plate 17 and the heat transfer panel 5 to provide a flow path. The control core material 13 is fixed to the container 6 by welding. As a result, the liquid flows in the same manner as in the peripheral flow path 8, so that heat exchange is possible.
[0020]
FIG. 7 is a cross-sectional view of a portion connected to the fluid B introduction nozzle 20. Since the orifice element 10 is provided in the fluid B conduit 9 that communicates the first communication hole 21 and the introduction nozzle 20 and communicates with the flow path 8 on the shell container 6 side, the fluid B passes through the orifice element 10. Controlled, a part of the fluid B flows through the peripheral gap flow path 8 between the plate portion and the container. Therefore, the amount of short circuit is controlled. Furthermore, since the B fluid pressure is applied to the shell container 6, the gap flow path 7 of the heat transfer panel 5 does not swell. Since the strong shell container 6 takes charge of the airtightness with the outside world, the airtightness can be maintained high.
[0021]
【The invention's effect】
A heat exchange fluid is flowed over the heat transfer surface of a high-performance plate, the liquid is controlled by controlling the flow rate in the gap flow path between the plate and the container, and ridges, grooves, wire members, etc. on the side of the container By providing a flow path, heat exchange with the end plate can be performed, and the plate material and the shell material are made of the same material by welding the plate, so that the waste recycling can be easily performed.
[Brief description of the drawings]
FIG. 1 is a sectional view in a flow direction of a plate heat exchanger according to an embodiment of the present invention.
2A and 2B are plan views showing an example of the plate pattern of FIG.
FIG. 3 is a cross-sectional view of the plate of FIG.
4 is a cross-sectional view of the panel in FIG. 1. FIG.
FIG. 5 is an overall perspective view of a plate heat exchanger.
FIG. 6 is a sectional view of a plate heat exchanger according to another embodiment of the present invention.
FIG. 7 is a partial cross-sectional view of a plate heat exchanger that is an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 2 ... Plate, 3 ... Projection bulge part, 4 ... Plate edge part, 5 ... Heat transfer panel, 6 ... Shell container, 7 ... Fluid B flow path, 8 ... Peripheral clearance flow path, 9 ... Fluid B liquid introduction tube,
DESCRIPTION OF SYMBOLS 10 ... Orifice element, 11 ... Convex strip, 12 ... Groove, 13 ... Bar-shaped member, 14 ... First bulge part, 15 ... Constriction part, 16 ... Second bulge part, 17 ... Container side plate, 18 ... Container end Plate: 19 ... Fluid A introduction nozzle, 20 ... Fluid B introduction nozzle, 21 ... First communication hole, 22 ... Second communication hole.

Claims (7)

両端にＡ流体が流れる第１連通孔とＢ流体が流れる第２連通孔を有し、表面に凹凸が成型された伝熱プレートを第１連通孔同士，第２連通孔同士が連通するように複数容器内に配列させると共に、各伝熱プレートの凸部を隣接する他の伝熱プレートの凸部に接触させて固定することにより流体流路を形成してなるプレート式熱交換器において、
前記伝熱プレートを２枚一組で袋状に縁部を溶接して袋内にＡ流体を流す伝熱パネルとし、該伝熱パネルを容器内に重ねて収納し、該伝熱パネル同士の隙間をＢ流体を流す流路とすると共に、重ねられた伝熱パネルと容器との隙間に形成される周辺流路と前記Ｂ流体が流れる流路とを流体Ｂ液導入管及び排出管に小孔、隙間、切り欠きなどの絞りを介して連通させる流路を設けたことを特徴とするプレート式熱交換器。A heat transfer plate having a first communication hole through which A fluid flows and a second communication hole through which B fluid flows at both ends, and having an uneven surface formed, is communicated between the first communication holes and the second communication holes. In the plate heat exchanger formed by arranging a fluid flow path by arranging in a plurality of containers and fixing the projection of each heat transfer plate in contact with the projection of another adjacent heat transfer plate,
A set of two heat transfer plates are welded together in a bag shape to form a heat transfer panel that allows fluid A to flow in the bag, and the heat transfer panel is stacked and stored in a container. The gap is used as a flow path for flowing the B fluid, and the peripheral flow path formed in the gap between the stacked heat transfer panel and the container and the flow path for flowing the B fluid are small in the fluid B liquid introduction pipe and the discharge pipe. A plate-type heat exchanger, characterized in that a flow path is provided for communication through a restriction such as a hole, gap, or notch . 請求項１記載のプレート式熱交換器において、重ねた伝熱パネルの縁部をシールすることによって形成されるＢ流体が流れる流路と、重ねた伝熱パネルと容器との間に形成される隙間流路とを連通させる流路を、Ｂ流体の出入口側の近傍にそれぞれ設けたことを特徴とするプレート式熱交換器。  2. The plate heat exchanger according to claim 1, which is formed between a flow path through which a fluid B formed by sealing an edge portion of the stacked heat transfer panels, and the stacked heat transfer panel and the container. A plate-type heat exchanger, characterized in that a channel for communicating with the gap channel is provided in the vicinity of the B fluid inlet / outlet side. 請求項１又は２記載のプレート式熱交換器において、前記伝熱パネルと前記容器側面とが接触する容器側面に凹凸部を設けて、前記伝熱パネルと前記容器側面との間に流体流路を設けたことを特徴とするプレート式熱交換器。  3. The plate heat exchanger according to claim 1, wherein an uneven portion is provided on a side surface of the container where the heat transfer panel and the side surface of the container are in contact, and a fluid flow path is provided between the heat transfer panel and the side surface of the container. A plate-type heat exchanger characterized by comprising: 請求項１又は２記載のプレート式熱交換器において、前記伝熱プレートと前記容器側面とが接触する容器側面との間に棒状部材を配置して、前記伝熱パネルと前記容器側面との間に流体流路を設けたことを特徴とするプレート式熱交換器。  3. The plate heat exchanger according to claim 1, wherein a rod-shaped member is disposed between the heat transfer plate and the container side surface where the container side surface comes into contact, and between the heat transfer panel and the container side surface. A plate-type heat exchanger characterized in that a fluid flow path is provided on the plate. 請求項１から３のいずれか１項記載のプレート式熱交換器において、前記伝熱パネルの縁部にプレートの凹凸部と同じ高さの膨らみ部を形成し、該伝熱パネルを重ねたときに前記膨らみ部同士が接触してシールしたことを特徴とするプレート式熱交換器。  The plate heat exchanger according to any one of claims 1 to 3, wherein a bulge portion having the same height as an uneven portion of the plate is formed on an edge portion of the heat transfer panel, and the heat transfer panel is stacked. The plate-type heat exchanger is characterized in that the bulging portions are in contact with each other and sealed. 請求項１から３のいずれか１項記載のプレート式熱交換器において、前記伝熱パネルの縁部にプレートの凹凸部と同じ高さの第１の膨らみ部流路を形成し、該第１の膨らみ部流路と狭い隙間のくびれ部で連通する第２の膨らみ部流路を形成し、前記くびれ部を接触させてシール部としたことを特徴とするプレート式熱交換器。  The plate-type heat exchanger according to any one of claims 1 to 3, wherein a first bulge flow path having the same height as the uneven portion of the plate is formed at an edge of the heat transfer panel, A plate-type heat exchanger characterized in that a second bulge portion flow channel communicating with the bulge portion flow channel of the bulge portion is formed as a seal portion by contacting the constriction portion. 請求項４又は７記載のプレート式熱交換器において、前記容器，伝熱プレート，棒状部材を同一種類の材料で構成したことを特徴とするプレート式熱交換器。  The plate heat exchanger according to claim 4 or 7, wherein the container, the heat transfer plate, and the rod-shaped member are made of the same kind of material.
JP19839598A 1998-07-14 1998-07-14 Plate heat exchanger Expired - Lifetime JP3639722B2 (en)

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SE532780C2 (en) * 2008-08-28 2010-04-06 Airec Ab Flat heat exchanger with insulating edge
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