JPH0443754Y2 - - Google Patents
Info
- Publication number
- JPH0443754Y2 JPH0443754Y2 JP1985054364U JP5436485U JPH0443754Y2 JP H0443754 Y2 JPH0443754 Y2 JP H0443754Y2 JP 1985054364 U JP1985054364 U JP 1985054364U JP 5436485 U JP5436485 U JP 5436485U JP H0443754 Y2 JPH0443754 Y2 JP H0443754Y2
- Authority
- JP
- Japan
- Prior art keywords
- elements
- cooling water
- heat exchanger
- temperature gas
- holes
- 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
- 239000000498 cooling water Substances 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 7
- 238000009835 boiling Methods 0.000 description 15
- 125000006850 spacer group Chemical group 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は排熱回収用熱交換器の如く、高温ガス
が内部に流通する積層型熱交換器にかかり、特に
局所的沸騰を抑制したものに関する。[Detailed description of the invention] [Field of industrial application] This invention applies to stacked heat exchangers in which high-temperature gas flows inside, such as heat exchangers for exhaust heat recovery, and particularly suppresses local boiling. Regarding.
従来、排熱回収用熱交換器であつて、積層型の
ものは第３図及び第４図の如く構成されていた。
即ち、各エレメント３は上下一対のモナカ状の金
属板からなり、それらの周縁が互いに接合（同図
では接合部省略）されると共に、長手方向両端部
に夫々気体流入孔１及び気体流出孔２を有するも
のである。このような複数のエレメント３をスペ
ーサ１６を介し、その厚み方向に積層し、夫々の
気体流出入孔１，２が互いに連通するように構成
する。そして、それらをケーシング７内に取付け
るとともに、最も外側のエレメントに高温気体供
給管５及び気体流出管６を夫々連結する。そし
て、ケーシング７に互いに離間して冷却水入口管
８及び冷却水出口管９を取付けたものである。と
ころが、このような積層型熱交換器は、第３図及
び第４図にいて、高温気体供給管５に近いスペー
サ１６近傍に局所的沸騰部１４が生じることがわ
かつた。これは冷却水１１がスペーサ１６外周を
流れるとき、その流れの後部に冷却水の停滞域が
生じる。そのため、その停滞域で適切な熱交換が
行われず、その部分が局所的に高温となるらであ
る。そのため、材料の劣化や沸騰による微振動で
材料割れを誘起することがあつた。
Conventionally, heat exchangers for exhaust heat recovery of a laminated type have been constructed as shown in FIGS. 3 and 4.
That is, each element 3 consists of a pair of upper and lower monadic-shaped metal plates, whose peripheral edges are joined to each other (the joints are omitted in the figure), and gas inflow holes 1 and gas outflow holes 2 are provided at both longitudinal ends, respectively. It has the following. A plurality of such elements 3 are stacked in the thickness direction with spacers 16 interposed therebetween, and the gas inflow/outflow holes 1 and 2 are configured to communicate with each other. Then, they are installed inside the casing 7, and the high temperature gas supply pipe 5 and gas outflow pipe 6 are connected to the outermost element, respectively. A cooling water inlet pipe 8 and a cooling water outlet pipe 9 are attached to the casing 7 at a distance from each other. However, in such a laminated heat exchanger, as shown in FIGS. 3 and 4, it was found that a local boiling portion 14 occurs near the spacer 16 near the high temperature gas supply pipe 5. This is because when the cooling water 11 flows around the outer periphery of the spacer 16, a cooling water stagnation area occurs at the rear of the flow. As a result, appropriate heat exchange is not performed in the stagnation area, resulting in a locally high temperature in that area. As a result, material deterioration and microvibrations caused by boiling could induce material cracks.
（課題を解決するための手段）
そこで、本考案は特に高温気体供給管５に近い
部分がより高温になり、そこに局所的沸騰部が起
こることに着目し、その沸騰部に冷却水を他の部
分よりも、より多く流通させることにより、局所
沸騰を抑制することを目的とし、その要旨とする
ところは次の通りである。(Means for Solving the Problem) Therefore, the present invention focuses on the fact that the part near the high-temperature gas supply pipe 5 becomes higher in temperature and a local boiling part occurs there, and cools the boiling part by adding cooling water to the boiling part. The purpose is to suppress local boiling by distributing more water than the other parts, and its gist is as follows.
即ち、夫々ほぼモナカ状に形成された一対の金
属板が互いに周縁で液密に接合されると共に、該
金属板の両端部に高温の気体流入孔１及び気体流
出孔２が穿設された複数のエレメント３を有し、
夫々のエレメント３，３がその厚み方向へ互いに
離間し且つ、前記孔１，１及び孔２，２同志が互
いにに連結部４を介して接合され、最も外側に位
置する前記エレメント３の前記気体流入孔１に高
温気体供給管５が連結されると共に、各エレメン
ト３の外周に冷却水が流通するように構成した積
層型熱交換器において、前記高温気体供給管５に
近いエレメント３，３間の間隔をそれより遠いエ
レメント間の間隔よりも広くして、より広いエレ
メント間に流通する前記冷却水の流量をそれより
狭いエレメント間の流量よりも多くしたことを特
徴とする積層型熱交換器。 That is, a pair of metal plates, each formed in a substantially monadic shape, are liquid-tightly joined to each other at the periphery, and a plurality of high-temperature gas inflow holes 1 and gas outflow holes 2 are bored at both ends of the metal plates. has element 3 of
The elements 3, 3 are spaced apart from each other in the thickness direction, and the holes 1, 1 and the holes 2, 2 are connected to each other via a connecting portion 4, and the gas of the element 3 located at the outermost side is In a stacked heat exchanger configured such that a high-temperature gas supply pipe 5 is connected to the inflow hole 1 and cooling water flows around the outer periphery of each element 3, the space between the elements 3 and 3 near the high-temperature gas supply pipe 5 is A stacked heat exchanger characterized in that the interval between the elements is wider than the interval between the elements further apart, and the flow rate of the cooling water flowing between the wider elements is larger than the flow rate between the narrower elements. .
次に図面に基づいて本考案の実施例につき説明
する。
Next, embodiments of the present invention will be described based on the drawings.
第１図は本考案の積層型熱交換器の要部縦断面
略図であり、第２図は第１図の−矢視断面図
である。 FIG. 1 is a schematic vertical cross-sectional view of the main parts of the laminated heat exchanger of the present invention, and FIG. 2 is a cross-sectional view taken along the - arrow in FIG.
この熱交換器のエレメント３は、比較的長尺な
モナカ状の上下一対のステンレス製金属板からな
り、それらの周縁部を液密にろう付け固定（ろう
付け部省略）し、夫々の長手方向両端部に第２図
に示す如く気体流入孔１及び気体流出孔２を貫通
して穿設する。なお、第１図に示す如く最も上側
のエレメント３は、下面側金属板のみに気体流入
孔１及び気体流出孔２を設けている。又各エレメ
ント内には図示しないインナーフインを設けても
よい。そして、スペーサからなる連結部４を介
し、各エレメント３同志をろう付け固定し、最も
下側のエレメント３にボス部１７をろう付けした
ものである。ここにおいて、本実施例の特徴とす
るところは、より下側の連結部４ほどその高さを
高くし、互いに近接するエレメント３同志の離間
距離L2を上方におけるそれらの離間距離L1より
大としている。そして、これらをケーシング７に
内装し、ボス部１７に適宜方法で高温気体供給管
５を連結する。又、ケーシング７には冷却水入口
管８と図示しない気体流出管を設ける。そして、
冷却水入口管８より冷却水１１を流入させ、各エ
レメント３，３間にそれを流通させる。されと共
に、高温気体供給管５を介し、高温の気体１０を
流入する。そして、各エレメント３の気体流入孔
１から気体流出孔２にそれらを流通させ、冷却水
１との間で熱交換させる。このとき第１図におい
て、より下側のエレメント３，３間の離間距離
L2は上側の離間距離L1より大に形成されている
ため、より下側では冷却水の流体抵抗が小さくな
り、その分だけそれらの間を流通する冷却水１１
の流速が速くなると共に、下側のエレメント３，
３間に流通する冷却水の流量が他の部分よりも多
くなる。そのため、ボス部１７に近い連結部４近
傍の局所的沸騰部を可能な限り抑制することがで
きる。なお、この実施例ではケーシング７の冷却
水流入管８が第１図において上部に位置されてい
るが、それを鎖線で示す冷却水入口管１２の如
く、ボス部１７の近傍に開口させてもよい。又、
第２図鎖線の冷却水入口管１３に示す如く冷却水
１１の入口方向をエレメント３の長手方向に直交
するように設けてもよい。いずれにしてもてせん
の冷却水入口管は図において局部沸騰部に近接し
て開口されるため、その部分の流速及び流量をさ
らに増大させるとこができる。 The element 3 of this heat exchanger consists of a pair of relatively long monaca-shaped upper and lower stainless steel metal plates, whose peripheral edges are liquid-tightly brazed and fixed (brazed part omitted), and each longitudinal direction As shown in FIG. 2, gas inflow holes 1 and gas outflow holes 2 are bored through both ends. As shown in FIG. 1, the uppermost element 3 is provided with gas inflow holes 1 and gas outflow holes 2 only in the lower metal plate. Further, inner fins (not shown) may be provided within each element. The elements 3 are brazed and fixed to each other via a connecting part 4 made of a spacer, and a boss part 17 is brazed to the lowermost element 3. Here, the feature of this embodiment is that the lower the connecting portion 4, the higher the height, and the distance L 2 between the elements 3 that are closer to each other is made larger than the distance L 1 between them in the upper part. It is said that Then, these are placed inside the casing 7, and the high temperature gas supply pipe 5 is connected to the boss portion 17 by an appropriate method. Further, the casing 7 is provided with a cooling water inlet pipe 8 and a gas outlet pipe (not shown). and,
Cooling water 11 is made to flow in from the cooling water inlet pipe 8, and is made to flow between each element 3, 3. At the same time, a high temperature gas 10 is introduced through the high temperature gas supply pipe 5. Then, the gas flows from the gas inflow hole 1 to the gas outflow hole 2 of each element 3 to exchange heat with the cooling water 1. At this time, in Fig. 1, the distance between the lower elements 3 and 3 is
Since L 2 is formed to be larger than the separation distance L 1 on the upper side, the fluid resistance of the cooling water is smaller on the lower side, and the cooling water 11 flowing between them is correspondingly smaller.
As the flow rate increases, the lower element 3,
The flow rate of cooling water flowing between the three parts is larger than that of other parts. Therefore, local boiling in the vicinity of the connecting portion 4 near the boss portion 17 can be suppressed as much as possible. In this embodiment, the cooling water inlet pipe 8 of the casing 7 is located at the upper part in FIG. 1, but it may be opened near the boss portion 17 as shown by the chain line as the cooling water inlet pipe 12. . or,
The inlet direction of the cooling water 11 may be arranged perpendicular to the longitudinal direction of the element 3, as shown by the cooling water inlet pipe 13 indicated by the chain line in FIG. In any case, since the cooling water inlet pipe of the fixture is opened close to the local boiling point in the figure, the flow velocity and flow rate in that area can be further increased.
以上の説明から明らかなように
(1) 本考案の積層型熱交換器は、高温気体供給管
に近く、他の部分よりも高温となるエレメント
間に流通する冷却水の流量を他の部分のそれよ
りも多くしたから、熱交換器の局所的沸騰を抑
制することができる。それにより、従来の同種
熱交換器で生じていた材料の劣化や沸騰による
微振動で起こる材料割れ等を効果的に防止でき
る。
As is clear from the above explanation, (1) the laminated heat exchanger of the present invention diverts the flow rate of cooling water flowing between elements that are close to high-temperature gas supply pipes and has a higher temperature than other parts. Since the amount is higher than that, local boiling in the heat exchanger can be suppressed. This effectively prevents material deterioration and material cracking caused by microvibrations caused by boiling, which occur in conventional similar heat exchangers.
即ち、この種の熱交換器（一例として排熱回
収用熱交換器）では各エレメントを連結する連
結部近傍で且つ高温気体供給管５に近い部分に
局所的沸騰１４（第４図）が生じていたが、本
考案では係る局所的沸騰がおこる位置の冷却水
の流量を多くしたから、該沸騰を防止し、耐久
性のある熱交換器を提供し得る効果かある。 That is, in this type of heat exchanger (an example is a heat exchanger for exhaust heat recovery), local boiling 14 (FIG. 4) occurs near the joints that connect each element and near the high-temperature gas supply pipe 5. However, in the present invention, since the flow rate of the cooling water at the position where such local boiling occurs is increased, the boiling can be prevented and a durable heat exchanger can be provided.
(2) 又、本熱交換器は特に伝動その他で高温とな
る部分を積極的に冷却するから、不均一な熱歪
が起こることを防止し、この点からも熱交換器
の耐久性を向上し得る。(2) In addition, this heat exchanger actively cools the parts that become hot, especially in transmission and other areas, which prevents uneven thermal distortion and improves the durability of the heat exchanger from this point of view as well. It is possible.
(3) さらに、熱交換器の比較的高温部分に、より
多くの冷却水を流通することにより、全体とし
て熱交換器の電熱効果を向上させる効果があ
る。(3) Furthermore, by circulating more cooling water to the relatively high temperature portion of the heat exchanger, there is an effect of improving the electrothermal effect of the heat exchanger as a whole.
第１図は本考案の積層型熱交換器の要部縦断面
図（エレメント３の接合部省略）、第２図は第１
図の−矢視断面図、第３図は従来型の熱交換
器の一部縦断面図、第４図は第３図の−矢視
断面図。
１……気体流入孔、２……気体流出孔、３……
エレメント、４……連結部、５……高温気体供給
管、６……流出管、７……ケーシング、８，１
２，１３……冷却水入口管、９……冷却水出口
管、１０……気体、１１……冷却水、１４……局
所的沸騰部、１５……局所的増速手段、１６……
スペーサ、１７……ボス部。
Figure 1 is a vertical cross-sectional view of the main parts of the laminated heat exchanger of the present invention (the joints of the elements 3 are omitted), and Figure 2 is the main part of the laminated heat exchanger of the present invention.
FIG. 3 is a partial vertical sectional view of a conventional heat exchanger, and FIG. 4 is a sectional view taken in the direction of FIG. 3. 1... Gas inflow hole, 2... Gas outflow hole, 3...
Element, 4... Connecting portion, 5... High temperature gas supply pipe, 6... Outflow pipe, 7... Casing, 8, 1
2, 13...Cooling water inlet pipe, 9...Cooling water outlet pipe, 10...Gas, 11...Cooling water, 14...Local boiling section, 15...Local speed increasing means, 16...
Spacer, 17...boss part.
Claims (1)
互いに周縁で液密に接合されると共に、該金属板
の両端部に高温の気体流入孔１及び気体流出孔２
が穿設された複数のエレメント３を有し、夫々の
エレメント３，３がその厚み方向へ互いに離間し
且つ、前記孔１，１及び孔２，２同志が互いに連
結部４を介して接合され、最も外側に位置する前
記エレメント３の前記気体流入孔１に高温気体供
給管５が連結されると共に、各エレメント３の外
周に冷却水が流通するように構成した積層型熱交
換器において、前記高温気体供給管５に近いエレ
メント３，３間の間隔をそれより遠いエレメント
間の間隔よりも広くして、より広いエレメント間
に流通する前記冷却水の流量をそれより狭いエレ
メント間の流量よりも多くしたことを特徴とする
積層型熱交換器。 A pair of metal plates each formed in a substantially monadic shape are liquid-tightly joined to each other at their peripheries, and a high-temperature gas inflow hole 1 and a gas outflow hole 2 are provided at both ends of the metal plates.
It has a plurality of elements 3 with holes drilled therein, the respective elements 3, 3 are spaced apart from each other in the thickness direction, and the holes 1, 1 and the holes 2, 2 are connected to each other via a connecting part 4. , in the laminated heat exchanger configured such that a high temperature gas supply pipe 5 is connected to the gas inflow hole 1 of the element 3 located at the outermost position, and cooling water flows around the outer periphery of each element 3; The distance between the elements 3, 3 close to the high temperature gas supply pipe 5 is made wider than the distance between the elements further away, so that the flow rate of the cooling water flowing between the wider elements is higher than the flow rate between the narrower elements. A laminated heat exchanger characterized by many features.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985054364U JPH0443754Y2 (en) | 1985-04-12 | 1985-04-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985054364U JPH0443754Y2 (en) | 1985-04-12 | 1985-04-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61170878U JPS61170878U (en) | 1986-10-23 |
| JPH0443754Y2 true JPH0443754Y2 (en) | 1992-10-15 |
Family
ID=30576053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985054364U Expired JPH0443754Y2 (en) | 1985-04-12 | 1985-04-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0443754Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004077024A (en) * | 2002-08-19 | 2004-03-11 | Denso Corp | Exhaust heat exchanger device |
| JP5510106B2 (en) * | 2010-06-21 | 2014-06-04 | 株式会社デンソー | Exhaust heat exchanger |
| JP7265962B2 (en) * | 2019-08-22 | 2023-04-27 | リンナイ株式会社 | plate heat exchanger |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5849505U (en) * | 1981-09-29 | 1983-04-04 | カルソニックカンセイ株式会社 | Vehicle motor control device |
-
1985
- 1985-04-12 JP JP1985054364U patent/JPH0443754Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5849505U (en) * | 1981-09-29 | 1983-04-04 | カルソニックカンセイ株式会社 | Vehicle motor control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61170878U (en) | 1986-10-23 |
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