JP3654949B2 - Plate structure of plate heat exchanger - Google Patents
Plate structure of plate heat exchanger Download PDFInfo
- Publication number
- JP3654949B2 JP3654949B2 JP07617295A JP7617295A JP3654949B2 JP 3654949 B2 JP3654949 B2 JP 3654949B2 JP 07617295 A JP07617295 A JP 07617295A JP 7617295 A JP7617295 A JP 7617295A JP 3654949 B2 JP3654949 B2 JP 3654949B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- heat transfer
- dividing groove
- bent
- transfer surface
- 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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Classifications
-
- 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
- F28F3/042—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 in the form of local deformations of the element
- F28F3/046—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 in the form of local deformations of the element the deformations being linear, e.g. corrugations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
- F28F3/083—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning capable of being taken apart
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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】
【産業上の利用分野】
本発明は、プレート式熱交換器で使用されるプレートの剛性を向上させるための構造に関する。
【０００２】
【従来の技術】
プレート式熱交換器で使用される伝熱プレート（以下、単に「プレート」と称す）の一般的な構造を図４（ａ）（ｂ）に示す。このプレート（11）において、伝熱機能を奏するのは、三角堰と呼ばれる部分（Ａ）と、伝熱面と呼ばれる部分（Ｂ）とである。このうち、伝熱面（Ｂ）の表裏面には、平面から見てＶ字型に形成した山部（12ａ、12ｂ：ハッチングで示す）と谷部（13ａ）（13ｂ）とが交互に形成されている。この伝熱面（Ｂ）の表面に一方の媒体を、その裏面に他方の媒体を流すことにより、両媒体間で熱交換がなされる。
【０００３】
ところで、プレートの中には、図５（ａ）に示すように、山部（12）や谷部（13）の傾斜角度を異ならせて二種類の伝熱面（14）（15）を上下に区画形成したものがある。このプレート（11ａ）によれば、伝熱面（14）（15）を流下する媒体の速度が上下で変化するので、熱交換機能の多様化が期待できる。
【０００４】
ところが、この種のプレート（11ａ）では、伝熱面（14）（15）の境界部分において、上下の山部（12）（12）同士、あるいは、谷部（13）（13）同士を連続させることができない。そのため、何らの対策も講じなければ、境界部分では、図６に示すように、プレート成形が困難な形状となる。
【０００５】
そこで、従来では、図５（ａ）及び図７に示すように、伝熱面（14）（15）の境界部分に、山部（12）よりも低く且つ谷部（13）よりも高い分割溝（16）を一連に形成している。これにより、境界部分の金型形状が簡略化されるので、成形不良を回避することができる。
【０００６】
一方、プレートの製作工程では、プレス用金型のうち、伝熱面に相当する部分を複数個、例えば３つに分割し、真ん中の金型を適宜交換することにより、長さの異なる種々の形状のプレートを成形する場合があるが、この場合も上下の伝熱面で山部や谷部が不連続となってその境界部分に段部が形成され、図５（ａ）のプレート（11ａ）と同様の問題が生じるおそれがある。従って、この場合のプレート（11ｂ）でも図５（ｂ）に示すように、各伝熱面（21）（22）（23）の境界部分に同様の分割溝（16）を形成している。
【０００７】
【発明が解決しようとする課題】
図５（ａ）（ｂ）から明らかなように、従来の分割溝は、プレートの幅方向を横断するごとくその全長にわたって一直線状に形成されている。そのため、縦方向に長いプレートや大型の重いプレート等の搬送時や取り扱い時に、プレートに曲げ方向の外力、具体的には、上下端部を接近させる方向の曲げ力が作用すると、分割溝に沿ってプレートが折れ曲がるおそれがある。これは、曲げ力によってプレートが折れ曲がろうとする方向と平行に分割溝が形成されているため、曲げ力が分割溝に集中的に作用するためである。
【０００８】
このように、プレートが折れ曲がると、ガスケット溝の変形により、プレート間のシール性が低下するおそれがあり、最悪の場合にはプレート全体が変形することも考えられる。
【０００９】
そこで、本発明は、あらゆる方向の曲げ力に対し、分割溝を有するプレートの剛性を向上させることを目的とする。
【００１０】
【課題を解決するための手段】
上記目的を達成するため、本発明では、プレート伝熱面の山部及び谷部に不連続部分を有し、この不連続部分を通って伝熱面を横断する分割溝により伝熱面を区画形成したものにおいて、分割溝に屈曲部若しくは曲線部を設けている。
【００１１】
【作用】
伝熱面を横断する分割溝に屈曲部若しくは曲線部を設けると、分割溝は、プレートのあらゆる折れ方向に対して交差する方向に延びる部分を持つことになる。従って、上記構成によれば、あらゆる方向の曲げ力に対して分割溝の少なくとも一部分がリブのごとく作用して曲げ力に対抗し、分割溝のプレートの折れ方向と平行に延びる部分への集中荷重を軽減させるので、あらゆる方向の曲げ力に対してプレートの折れ曲がりを防止することが可能となる。
【００１２】
【実施例】
以下、本発明の実施例を図１乃至図３に基づいて説明する。
【００１３】
図１に本発明の第１の実施例を示す。このプレート（１）は、図５（ａ）に示すプレート（11）に対応するもので、山部（２）や谷部（３）の傾斜角度を異ならせた二種類の伝熱面（４）（５）が、間に分割溝（６）を介在させて上下に区画形成されている。分割溝（６）は、プレート（１）の左右両端部に装着されたガスケット（７）間を、その幅方向を横断するごとく形成される。なお、この図面では、山部（２）と谷部（３）とを識別するためのハッチングの付記が省略されている。
【００１４】
分割溝（６）は、複数の屈曲部（８）を有する三角波状に形成される。これにより、分割溝（６）の大部分、具体的には屈曲部（８）を除く他の部分は、プレート（１）にその上下端部を接近させる方向の曲げ力を作用させた際のプレート（１）の折れ方向（ａ）（プレートの幅方向）と交差する方向に延びることとなる。この部分は、リブのごとき作用を呈して曲げ力に対抗するので、分割溝（６）のプレート（１）の折れ方向と平行に延びる部分（屈曲部（８）の近傍）への集中負荷を軽減させることができる。従って、プレート（１）の折れ曲がりを防止することが可能となる。
【００１５】
また、この分割溝（６）の大部分は、プレート（１）にその左右端部を接近させる方向の曲げ力が作用した際のプレート（１）の折れ方向（ｂ）（プレートの縦方向）に対してもこれと交差する方向に延びているので、このような曲げ力によるプレート（１）の折れ曲がりも防止することができる。同様の理由から、プレート（１）の斜め方向に負荷された曲げ力に対しても対抗することができ、その曲げ力によるプレート（１）の折れ曲がりを防止することができる。従って、あらゆる方向の曲げ力に対してプレート（１）の折れ曲がりを防止することができる。
【００１６】
図２及び図３に本発明の他の実施例を示す。なお、これらの図面では、伝熱面（４）（５）に設けた山部や谷部の図示を省略している。
【００１７】
図２（ａ）は、分割溝（６）を一つの屈曲部（８）を有する山型（谷型でもよい）に形成したものであり、同図（ｂ）は分割溝（６）を複数の屈曲部（８）を有する矩形波状に形成したものである。
【００１８】
図３（ａ）（ｂ）は、分割溝（６）を円弧状の曲線部（９）を有する形状に形成したものである。両図面では、複数の曲線部（９）を組み合わせた蛇行形状の分割溝（６）を例示しているが、分割溝（６）が一又は複数の曲線部（９）を有する限りその形状は任意である。曲線部（９）は、正確な円弧状である必要はなく、種々の曲率半径を有する任意の曲線であってもよい。
【００１９】
以上の説明では、本発明を図５（ａ）に示すプレート（11）に適用しているが、同図（ｂ）に示すプレート（11）にも同様に適用可能である。また、プレート伝熱面（４）（５）の幅方向に沿って横断させた分割溝（６）の形状のみを図示しているが、その他、伝熱面の縦方向や斜め方向に沿って横断させた分割溝にも同様の構成が適用可能である。
【００２０】
【発明の効果】
このように、本発明によれば、プレートの剛性を増大させてあらゆる方向の曲げ力に対してプレートの折れ曲がりを防止することができる。従って、プレートの運搬時や取り扱い時にもプレートの変形を防止でき、ガスケット溝の変形によるシール性低下、あるいは、プレート全体の変形といった事態を回避することができる。
【図面の簡単な説明】
【図１】本発明にかかるプレートの平面図である。
【図２】分割溝に屈曲部を設けた実施例を示す平面図である。
【図３】分割溝に曲線部を設けた実施例を示す平面図である。
【図４】（ａ）図は分割溝を具備しないプレートの平面図であり、（ｂ）図はその要部拡大斜視図である。
【図５】分割溝を有する従来のプレートの平面図である。
【図６】山部や谷部の不連続に対して何らの対策も施していないプレートの要部拡大斜視図である。
【図７】山部や谷部の不連続に対処すべく分割溝を設けたプレートの要部拡大斜視図である。
【符号の説明】
１ プレート
２ 山部
３ 谷部
４,５ 伝熱面
６ 分割溝
７ ガスケット
８ 屈曲部
10 曲線部[0001]
[Industrial application fields]
The present invention relates to a structure for improving the rigidity of a plate used in a plate heat exchanger.
[0002]
[Prior art]
A general structure of a heat transfer plate (hereinafter simply referred to as “plate”) used in a plate heat exchanger is shown in FIGS. In this plate (11), it is a part (A) called a triangular weir and a part (B) called a heat transfer surface that has a heat transfer function. Among these, on the front and back surfaces of the heat transfer surface (B), peaks (12a, 12b: indicated by hatching) and valleys (13a) (13b) formed in a V shape when viewed from the plane are alternately formed. Has been. By flowing one medium on the surface of the heat transfer surface (B) and the other medium on the back surface, heat exchange is performed between the two media.
[0003]
By the way, in the plate, as shown in FIG. 5 (a), the two heat transfer surfaces (14) and (15) are moved up and down by changing the inclination angle of the peak (12) and the valley (13). There is one that has been partitioned. According to this plate (11a), since the speed of the medium flowing down the heat transfer surfaces (14) and (15) varies up and down, diversification of the heat exchange function can be expected.
[0004]
However, in this type of plate (11a), the upper and lower peaks (12) (12) or valleys (13) (13) are continuous at the boundary between the heat transfer surfaces (14) and (15). I can't let you. Therefore, if no measures are taken, the boundary portion has a shape that is difficult to plate as shown in FIG.
[0005]
Therefore, conventionally, as shown in FIG. 5A and FIG. 7, the boundary between the heat transfer surfaces (14) and (15) is divided lower than the peak (12) and higher than the valley (13). Grooves (16) are formed in series. Thereby, since the metal mold | die shape of a boundary part is simplified, a shaping | molding defect can be avoided.
[0006]
On the other hand, in the plate manufacturing process, the portion corresponding to the heat transfer surface of the press mold is divided into a plurality of, for example, three parts, and the middle mold is appropriately replaced, so that various lengths can be obtained. In some cases, a plate having a shape is formed. In this case as well, the ridges and valleys are discontinuous on the upper and lower heat transfer surfaces, and stepped portions are formed at the boundary portions, and the plate (11a) in FIG. ) May occur. Therefore, in the plate (11b) in this case, as shown in FIG. 5 (b), the same dividing groove (16) is formed at the boundary portion between the heat transfer surfaces (21), (22) and (23).
[0007]
[Problems to be solved by the invention]
As is clear from FIGS. 5A and 5B, the conventional dividing grooves are formed in a straight line over the entire length of the dividing groove as it crosses the width direction of the plate. For this reason, when an external force in the bending direction, specifically, a bending force in the direction of approaching the upper and lower ends, is applied to the plate during transportation or handling of a plate that is long in the vertical direction or a large heavy plate, it follows the dividing groove. The plate may be bent. This is because the dividing groove is formed in parallel to the direction in which the plate is bent by the bending force, and the bending force acts on the dividing groove in a concentrated manner.
[0008]
As described above, when the plate is bent, the sealability between the plates may be deteriorated due to the deformation of the gasket groove. In the worst case, the whole plate may be deformed.
[0009]
Therefore, an object of the present invention is to improve the rigidity of a plate having a dividing groove with respect to bending forces in all directions.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention, the heat transfer surface is partitioned by dividing grooves that have discontinuous portions at the peaks and valleys of the plate heat transfer surface and cross the heat transfer surface through the discontinuous portions. In the formed structure, the dividing groove is provided with a bent portion or a curved portion.
[0011]
[Action]
When a bent portion or a curved portion is provided in the dividing groove that crosses the heat transfer surface, the dividing groove has a portion that extends in a direction intersecting with any folding direction of the plate. Therefore, according to the above configuration, at least a part of the dividing groove acts as a rib against bending force in all directions to counter the bending force, and concentrated load on a portion extending in parallel with the folding direction of the plate of the dividing groove. Therefore, it is possible to prevent the plate from being bent with respect to the bending force in any direction.
[0012]
【Example】
Embodiments of the present invention will be described below with reference to FIGS.
[0013]
FIG. 1 shows a first embodiment of the present invention. This plate (1) corresponds to the plate (11) shown in FIG. 5 (a), and has two types of heat transfer surfaces (4) with different inclination angles of the peaks (2) and valleys (3). ) (5) are vertically partitioned with a dividing groove (6) interposed therebetween. The dividing groove (6) is formed so as to cross the width direction between the gaskets (7) attached to the left and right ends of the plate (1). In addition, in this drawing, the addition of hatching for identifying the peak (2) and the valley (3) is omitted.
[0014]
The dividing groove (6) is formed in a triangular wave shape having a plurality of bent portions (8). As a result, most of the dividing grooves (6), specifically the other parts except the bent portion (8), are subjected to a bending force in a direction in which the upper and lower ends thereof are made to approach the plate (1). The plate (1) extends in a direction crossing the folding direction (a) (the width direction of the plate). Since this portion acts like a rib and counters bending force, concentrated load is applied to a portion (near the bent portion (8)) extending in parallel with the folding direction of the plate (1) of the dividing groove (6). It can be reduced. Therefore, it is possible to prevent the plate (1) from being bent.
[0015]
Further, most of the dividing groove (6) has a bending direction (b) (vertical direction of the plate) of the plate (1) when a bending force in a direction in which the left and right end portions approach the plate (1). The plate (1) can also be prevented from being bent by such a bending force. For the same reason, it is possible to counter the bending force applied in the oblique direction of the plate (1) and to prevent the bending of the plate (1) due to the bending force. Therefore, bending of the plate (1) can be prevented with respect to bending force in any direction.
[0016]
2 and 3 show another embodiment of the present invention. In these drawings, illustrations of peaks and valleys provided on the heat transfer surfaces (4) and (5) are omitted.
[0017]
FIG. 2 (a) shows that the dividing groove (6) is formed in a mountain shape (may be a valley shape) having one bent portion (8), and FIG. 2 (b) shows a plurality of dividing grooves (6). These are formed in a rectangular wave shape having a bent portion (8).
[0018]
3 (a) and 3 (b), the dividing groove (6) is formed into a shape having an arcuate curved portion (9). In both drawings, the meander-shaped dividing groove (6) in which a plurality of curved portions (9) are combined is illustrated, but as long as the dividing groove (6) has one or a plurality of curved portions (9), the shape thereof is Is optional. The curved portion (9) does not have to be an exact arc shape, and may be an arbitrary curve having various radii of curvature.
[0019]
In the above description, the present invention is applied to the plate (11) shown in FIG. 5A. However, the present invention is also applicable to the plate (11) shown in FIG. 5B. Moreover, although only the shape of the dividing groove (6) traversed along the width direction of the plate heat transfer surfaces (4) and (5) is illustrated, other than that, along the vertical direction or the oblique direction of the heat transfer surface A similar configuration can be applied to the crossed dividing grooves.
[0020]
【The invention's effect】
Thus, according to the present invention, it is possible to increase the rigidity of the plate and prevent the plate from being bent with respect to bending forces in all directions. Therefore, deformation of the plate can be prevented during transportation and handling of the plate, and a situation such as deterioration of sealing performance due to deformation of the gasket groove or deformation of the entire plate can be avoided.
[Brief description of the drawings]
FIG. 1 is a plan view of a plate according to the present invention.
FIG. 2 is a plan view showing an embodiment in which a bent portion is provided in a dividing groove.
FIG. 3 is a plan view showing an embodiment in which a curved portion is provided in a dividing groove.
4A is a plan view of a plate not provided with a dividing groove, and FIG. 4B is an enlarged perspective view of a main part thereof.
FIG. 5 is a plan view of a conventional plate having a dividing groove.
FIG. 6 is an enlarged perspective view of a main part of a plate in which no countermeasure is taken against discontinuity of peaks and valleys.
FIG. 7 is an enlarged perspective view of a main part of a plate provided with dividing grooves to cope with discontinuities in peaks and valleys.
[Explanation of symbols]
1 Plate 2
10 Curve
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07617295A JP3654949B2 (en) | 1995-03-31 | 1995-03-31 | Plate structure of plate heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07617295A JP3654949B2 (en) | 1995-03-31 | 1995-03-31 | Plate structure of plate heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08271173A JPH08271173A (en) | 1996-10-18 |
| JP3654949B2 true JP3654949B2 (en) | 2005-06-02 |
Family
ID=13597679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07617295A Expired - Fee Related JP3654949B2 (en) | 1995-03-31 | 1995-03-31 | Plate structure of plate heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3654949B2 (en) |
Cited By (1)
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|---|---|---|---|---|
| US10767933B2 (en) | 2016-02-24 | 2020-09-08 | Alfa Laval Corporate Ab | Heat exchanger plate for a plate heat exchanger, and a plate heat exchanger |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002107084A (en) * | 2000-09-29 | 2002-04-10 | Hisaka Works Ltd | Plate-type heat exchanger |
| SE534765C2 (en) * | 2010-04-21 | 2011-12-13 | Alfa Laval Corp Ab | Plate heat exchanger plate and plate heat exchanger |
| RU2554706C2 (en) | 2011-04-18 | 2015-06-27 | Мицубиси Электрик Корпорейшн | Plate heat exchanger and heat pump device |
| JP5727327B2 (en) * | 2011-08-08 | 2015-06-03 | 株式会社神戸製鋼所 | Heat exchanger |
| LT2728292T (en) | 2012-10-30 | 2016-12-12 | Alfa Laval Corporate Ab | Heat transfer plate and plate heat exchanger comprising such a heat transfer plate |
| HUE035381T2 (en) | 2014-06-18 | 2018-05-02 | Alfa Laval Corp Ab | Heat transfer plate and plate heat exchanger comprising such a heat transfer plate |
| JP6963957B2 (en) * | 2017-09-28 | 2021-11-10 | 株式会社日阪製作所 | Plate heat exchanger |
| WO2019144212A1 (en) | 2018-01-29 | 2019-08-01 | Dana Canada Corporation | Structurally supported heat exchanger |
| JP2021527192A (en) * | 2018-06-07 | 2021-10-11 | ザイデル、ペサハSEIDEL, Pessach | Plate heat exchanger plate |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52105357A (en) * | 1976-02-28 | 1977-09-03 | Hisaka Works Ltd | Condenser |
| JPS5467255A (en) * | 1977-11-08 | 1979-05-30 | Hisaka Works Ltd | Plate for condenser |
| JP3212350B2 (en) * | 1992-03-30 | 2001-09-25 | 株式会社日阪製作所 | Plate heat exchanger |
| JP3543992B2 (en) * | 1994-03-28 | 2004-07-21 | 株式会社日阪製作所 | Plate heat exchanger |
-
1995
- 1995-03-31 JP JP07617295A patent/JP3654949B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10767933B2 (en) | 2016-02-24 | 2020-09-08 | Alfa Laval Corporate Ab | Heat exchanger plate for a plate heat exchanger, and a plate heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08271173A (en) | 1996-10-18 |
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