JPS5812050Y2 - Plate heat exchanger - Google Patents
Plate heat exchangerInfo
- Publication number
- JPS5812050Y2 JPS5812050Y2 JP1977114763U JP11476377U JPS5812050Y2 JP S5812050 Y2 JPS5812050 Y2 JP S5812050Y2 JP 1977114763 U JP1977114763 U JP 1977114763U JP 11476377 U JP11476377 U JP 11476377U JP S5812050 Y2 JPS5812050 Y2 JP S5812050Y2
- Authority
- JP
- Japan
- Prior art keywords
- flow path
- flow
- heat exchanger
- plate heat
- fluids
- 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
Links
Landscapes
- Details Of Heat-Exchange And Heat-Transfer (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
【考案の詳細な説明】
本考案はプレート式熱交換器に関するもので、その目的
とするところは熱交換される2流体の内、小流量流体側
に支配されることなく最小枚数で且つ最適のプレート構
成を提供しようとするものである。[Detailed description of the invention] The present invention relates to a plate heat exchanger, and its purpose is to minimize the number of plates and optimize the number of plates without being dominated by the small flow rate fluid of the two fluids being heat exchanged. It is intended to provide a plate configuration.
従来のプレート式熱交換器は高温流体及び低温流体の両
流体の流路が同一形状であるため両流体をプレート内に
等流量で流せば前記両流体の境膜伝熱係数は液質によっ
て若干異なるが、はぼ等しくなる。In conventional plate heat exchangers, the flow paths for both high-temperature and low-temperature fluids have the same shape, so if both fluids flow at equal flow rates into the plate, the film heat transfer coefficients of the two fluids will vary depending on the liquid quality. They are different, but they are almost the same.
即ち、どちらか一方の境膜伝熱係数が総括伝熱係数を支
配することなく高い伝熱係数を得ることができる。That is, a high heat transfer coefficient can be obtained without one of the film heat transfer coefficients dominating the overall heat transfer coefficient.
例えば、高温流体1と低温流体2の流量が等しい場合に
は、第1図aのように完全対向流とすることによって両
流体の伝熱係数が等しくなる。For example, if the flow rates of the high temperature fluid 1 and the low temperature fluid 2 are equal, the heat transfer coefficients of both fluids will be made equal by creating completely opposing flows as shown in FIG. 1a.
しかし、高温流体と低温流体の流量に差が生じる場合に
は第1図すのようにプレートの組合せを変えて小流量側
流路のパス数を複数にして、1部並行流を構成しないと
効率が落ちる。However, if there is a difference in the flow rates of the high-temperature fluid and the low-temperature fluid, it is necessary to change the combination of plates as shown in Figure 1 and make the number of passes in the small flow channel more than one to form partially parallel flow. Efficiency decreases.
このように1部並行流を設けることによってプレート流
路内の流量を等しくすることができる。By providing part of the parallel flow in this manner, the flow rates in the plate flow path can be made equal.
このように両流体に流量差が生じる場合、境膜伝熱係数
を大流量流体側に合わせようとすればプレート流路構成
上、仕様条件によって必ずしも完全対向流で流すことが
できず、部分的に不完全な状態、つ1す、並行流部分の
混在する事態が生じる。When there is a flow rate difference between the two fluids in this way, if you try to match the film heat transfer coefficient to the high flow rate fluid, due to the plate flow path configuration, it may not necessarily be possible to flow completely in opposite directions depending on the specification conditions, and the flow may be partially opposite. A situation occurs in which incomplete states, parallel flow parts, and parallel flow parts coexist.
通常、用いる伝熱一般式q=U−A−Jtm(q=熱交
換量、U =総括伝熱係数、A−伝熱面積、Jtm=温
度差)で、前記完全対向流の場合、対数平均温度差(J
tm)は補正が不要であり、即ち、補正値(Ft)は1
.0であって、前記不完全対向流の場合の補正値(F、
)は0以上1.0以下の中間値となり、完全対向流の場
合と比較して低い温度差しかとれず、結果的に伝熱面積
を増加せざるを得なかった。Usually, the general heat transfer formula used is q = U-A-Jtm (q = heat exchange amount, U = overall heat transfer coefficient, A - heat transfer area, Jtm = temperature difference), and in the case of the above-mentioned completely opposite flow, the logarithmic average Temperature difference (J
tm) does not require correction, that is, the correction value (Ft) is 1
.. 0, and the correction value (F,
) was an intermediate value between 0 and 1.0, which meant that a lower temperature difference could not be achieved compared to the case of complete counterflow, and as a result, the heat transfer area had to be increased.
本考案は上記のような欠点を解消するもので、2流体の
内、小流量側流路の適宜位置に流路変更調整部3を挿入
することによシ、この部分に釦いて、小流体側の流れ方
向を180°逆転させる。The present invention solves the above-mentioned drawbacks by inserting a flow path change adjustment part 3 at an appropriate position in the flow path on the small flow rate side of the two fluids. Reverse the side flow direction by 180°.
一方、大流量流体側は通過させるだけとし、流体流れ方
向は変えない。On the other hand, the large flow fluid side is only allowed to pass through, and the fluid flow direction is not changed.
第4図に示したのは流路変更調整部3の一実施例で、小
流量流体側の流路中に2枚の遊び板4を設けることによ
って流路を変更したものであり1第5図に示したのは流
路変更調整部3として仕切板5を設け、導管6を通して
流路を変更した例である。What is shown in FIG. 4 is an embodiment of the flow path change adjustment section 3, in which the flow path is changed by providing two play plates 4 in the flow path on the small flow rate fluid side. The figure shows an example in which a partition plate 5 is provided as the flow path change adjustment section 3 and the flow path is changed through a conduit 6.
尚、仕切板5には流体通路があればよく、導管6は省略
することができる。Note that the partition plate 5 only needs to have a fluid passage, and the conduit 6 can be omitted.
本考案は上記のように、小流量流体側の流れ方向を逆転
させることによって、2流体の流え方向は完全対向流と
することができた。As described above, in the present invention, by reversing the flow direction of the small flow rate fluid side, the flow directions of the two fluids can be made to be completely opposite flows.
従って、2流体の対数平均温度差は実質的に完全対向流
の値がとれるから前言中」1流量流体側に支配されるこ
となく最小枚数で且つ最適のプレート構成を得ることが
できた。Therefore, since the logarithmic average temperature difference between the two fluids takes on a value of substantially completely opposite flow, it is possible to obtain the optimum plate configuration with the minimum number of plates without being dominated by the one flow rate fluid side as mentioned above.
第1図a、bはプレートによる流路構成を示す正面図、
第2図は本考案の一実施例を示す流路構成の正面図、第
3図は他実施例を示す正面図、第4図、第5図は流路変
更調整部の拡大断面図。
1.2・・・・・・熱交換される2流体流路、3・・・
・・・流路変更調整部、4・・・・・・遊び板、5・・
・・・・仕切板、6・・・・・・導管。Figures 1a and 1b are front views showing the flow path configuration by plates;
FIG. 2 is a front view of a flow path configuration showing one embodiment of the present invention, FIG. 3 is a front view showing another embodiment, and FIGS. 4 and 5 are enlarged sectional views of a flow path change adjustment section. 1.2... Two fluid flow paths for heat exchange, 3...
...Flow path change adjustment section, 4... Play plate, 5...
...Partition plate, 6... Conduit.
Claims (3)
緊締されたプレート式熱交換器にkいて、熱交換される
2流体の内、小流量側流路中に流路変更調整部を挿入し
たことによって前記2流体を完全対向流で流すようにし
たことを特徴とするプレート式熱交換器。(1) A plate heat exchanger is constructed by stacking and tightening multiple heat transfer plates through gaskets, and a flow path change adjustment section is inserted into the flow path on the low flow rate side of the two fluids to be heat exchanged. A plate heat exchanger characterized in that the two fluids are caused to flow in completely opposite flows.
2枚のプレート板を遊び板として挿入した実用新案登録
請求の範囲第(1)項記載のプレート式熱交換器。(2) As a flow path change adjustment section provided in the flow path on the small flow rate side,
A plate heat exchanger according to claim (1) of the utility model registration, in which two plates are inserted as play plates.
導管を有する仕切板を挿入した実用新案登録請求の範囲
第(1)項記載のプレート式熱交換器。(3) As a flow path change adjustment section provided in the flow path on the small flow rate side,
A plate heat exchanger according to claim (1) of the registered utility model, in which a partition plate having a conduit is inserted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1977114763U JPS5812050Y2 (en) | 1977-08-26 | 1977-08-26 | Plate heat exchanger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1977114763U JPS5812050Y2 (en) | 1977-08-26 | 1977-08-26 | Plate heat exchanger |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5440558U JPS5440558U (en) | 1979-03-17 |
JPS5812050Y2 true JPS5812050Y2 (en) | 1983-03-07 |
Family
ID=29065797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1977114763U Expired JPS5812050Y2 (en) | 1977-08-26 | 1977-08-26 | Plate heat exchanger |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5812050Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2586848Y2 (en) * | 1992-06-22 | 1998-12-14 | 本田技研工業株式会社 | Pneumatic tool silencing attachment |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5027230A (en) * | 1973-07-12 | 1975-03-20 |
-
1977
- 1977-08-26 JP JP1977114763U patent/JPS5812050Y2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5027230A (en) * | 1973-07-12 | 1975-03-20 |
Also Published As
Publication number | Publication date |
---|---|
JPS5440558U (en) | 1979-03-17 |
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