JPH0253718B2 - - Google Patents
Info
- Publication number
- JPH0253718B2 JPH0253718B2 JP57208929A JP20892982A JPH0253718B2 JP H0253718 B2 JPH0253718 B2 JP H0253718B2 JP 57208929 A JP57208929 A JP 57208929A JP 20892982 A JP20892982 A JP 20892982A JP H0253718 B2 JPH0253718 B2 JP H0253718B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- tube
- end plates
- nickel
- tubes
- 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 - Lifetime
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 34
- 229910052759 nickel Inorganic materials 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims description 10
- 229910000679 solder Inorganic materials 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 description 7
- 238000005219 brazing Methods 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
- F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Description
【発明の詳細な説明】
本願は、たとえば溶鉱炉中の排熱回収装置ある
いは内燃機関の吸気加熱装置として用いられる高
温流体用の熱交換器に関する。DETAILED DESCRIPTION OF THE INVENTION The present application relates to a heat exchanger for high temperature fluid used, for example, as an exhaust heat recovery device in a blast furnace or as an intake air heating device in an internal combustion engine.
従来の熱交換器は、上下端板間に多数の管を配
設した熱交換器を、入出口を有するケース内に設
置したものであり、熱交換体の管の内外に各々流
体を導入しその間で熱交換するようにしたもので
ある。 A conventional heat exchanger is a heat exchanger with a large number of tubes arranged between upper and lower end plates, installed inside a case with an inlet and an outlet, and fluid is introduced into and out of each tube of the heat exchanger. It is designed to exchange heat between them.
この熱交換器は、管の外側に熱交換流体として
排気等の高温流体が用いられるものであるから、
上記熱交換体の管はステンレス鋼等の耐熱材が用
いられる。また、管と端板の連結は、溶接手段に
よりなされる。 This heat exchanger uses a high-temperature fluid such as exhaust gas as a heat exchange fluid on the outside of the tube.
The tube of the heat exchanger is made of a heat-resistant material such as stainless steel. Further, the tube and the end plate are connected by welding means.
このような従来の熱交換器においては、次のよ
うな欠点をもたらす。すなわち、上記管は、該管
外表面に、高温排気中に含まれる砂、スケール等
が衝突し、摩耗、損傷することである。このた
め、管表面に耐摩耗性のセラミツク膜を形成させ
ることにより摩損を防止するようにすることも考
えられるが、熱伝導性を悪化させ、熱交換性能を
低下させるとともに費用を増加させてしまうこと
になる。 Such conventional heat exchangers have the following drawbacks. That is, sand, scale, etc. contained in the high-temperature exhaust gas collide with the outer surface of the tube, causing wear and damage. For this reason, it may be possible to prevent wear and tear by forming a wear-resistant ceramic film on the pipe surface, but this would worsen thermal conductivity, reduce heat exchange performance, and increase costs. It turns out.
本願は、上記に鑑み、熱交換性能を低下させる
ことなく耐摩耗性を向上させた熱交換体を有する
高温流体用の熱交換器を提供することを目的とす
るものであり、熱交換体を一体的に固着させるた
めに用いられるニツケルろうを利用して管表面に
ニツケルろうの保護膜を形成させてこの目的を達
成させたものである。 In view of the above, the present application aims to provide a heat exchanger for high-temperature fluids having a heat exchanger with improved wear resistance without reducing heat exchange performance. This purpose is achieved by forming a protective film of nickel wax on the tube surface using nickel wax used for integrally fixing the tube.
実施例により説明すると、第１図は本発明の熱
交換器１０であつて、多数の挿入口３を設けた上
下端板１，２間に、多数のステンレス製の管４を
挿着して熱交換体５を形成し、上下端板１，２に
第１流体の流入出口部６，７を、上下端板１，２
の側面に第２流体の流入出口部８，９を各々設け
て成る。上下端板１，２の挿入口３と各管４の接
合部、および流入出口部６，７，８，９と上下端
板１，２との間は、介在するニツケルろう１１ａ
により気密にろう着される。ニツケルろうは、た
とえばNi−Cr−Ｂ−Si系の合金である。また、
熱交換体５の管４の外表面に、このニツケルろう
の保護膜１１ｂが上記接合部から連続的に付着し
ており、管４はニツケルろうにより被覆される
（第２図）。 To explain by way of an example, FIG. 1 shows a heat exchanger 10 of the present invention, in which a large number of stainless steel tubes 4 are inserted between upper and lower end plates 1 and 2 provided with a large number of insertion holes 3. A heat exchanger 5 is formed, and the upper and lower end plates 1 and 2 are provided with inflow and outlet portions 6 and 7 for the first fluid.
Inlet/outlet portions 8, 9 for the second fluid are provided on the side surfaces thereof, respectively. The intervening nickel solder 11a is located between the insertion ports 3 of the upper and lower end plates 1 and 2 and the respective pipes 4, and between the inlet and outlet portions 6, 7, 8, and 9 and the upper and lower end plates 1 and 2.
It is soldered airtight. Nickel wax is, for example, a Ni-Cr-B-Si alloy. Also,
A protective film 11b of nickel solder is continuously attached to the outer surface of the tube 4 of the heat exchanger 5 from the above-mentioned joint, and the tube 4 is covered with nickel solder (FIG. 2).
このような熱交換器１０は、まず熱交換体５お
よび流入出口部６，７，８，９を組付け、次いで
端板１，２上にニツケルろう材を配設しこれを
1150℃〜1250℃に加熱された真空又は還元性雰囲
気下で約15分間熱処理を施し一体ろう付して形成
される。 Such a heat exchanger 10 is constructed by first assembling the heat exchanger 5 and the inlet/outlet sections 6, 7, 8, 9, and then placing nickel brazing material on the end plates 1, 2.
It is formed by heat treatment in a vacuum or reducing atmosphere heated to 1150°C to 1250°C for about 15 minutes and then integrally brazed.
溶融ろうの一部は、各接合部に残存し他部は管
４の外表面を流下し、管４外表面に付着する。 A portion of the molten solder remains at each joint, and another portion flows down the outer surface of the tube 4 and adheres to the outer surface of the tube 4.
他の例としては、ニツケルろうを予じめ管４外
表面にコーテイングしておき、これを上記のよう
に組付けその後一体ろう付する方法によつても得
られる。 Another example is to coat the outer surface of the tube 4 with nickel solder in advance, assemble it as described above, and then braze it together.
熱交換器１０の作用を、排熱回収装置として用
いた場合を例に説明する。第１図において、排気
は入口部８から流入し出口部９へ流出する。吸入
空気は入口部８から流入し出口部９へ流出する。
吸入空気は入口部６から流入し熱交換体５の管４
内を流通して出口部７へ至る。この間に吸入空気
は、加熱され、排気中の熱は一部回収される。 The operation of the heat exchanger 10 will be explained using an example where the heat exchanger 10 is used as an exhaust heat recovery device. In FIG. 1, exhaust gas flows into the inlet section 8 and flows out to the outlet section 9. Intake air flows into the inlet section 8 and flows out to the outlet section 9.
Intake air flows in from the inlet section 6 and passes through the tubes 4 of the heat exchanger 5.
The liquid flows through the interior and reaches the outlet section 7. During this time, the intake air is heated and some of the heat in the exhaust gas is recovered.
排気中の砂じんは、管４の外表面に衝突する
が、管４外表面のニツケルろうの保護膜１１ｂの
存在により管４は保護される。すなわち、一般の
ステンレス鋼材の硬度（ビツカース硬さ）は、約
200程度であるのに対し、ニツケルろう材の硬度
は約600程であるからである。ニツケルろう材の
伝導性は、セラミツク材から成る耐摩耗材に比
し、優れているから熱交換性能は悪化しない。 The sand and dust in the exhaust collide with the outer surface of the tube 4, but the tube 4 is protected by the presence of the nickel wax protective film 11b on the outer surface of the tube 4. In other words, the hardness (Bitzkers hardness) of general stainless steel material is approximately
This is because the hardness of nickel brazing metal is about 600, while the hardness of nickel brazing material is about 200. The conductivity of the nickel brazing material is superior to that of the wear-resistant material made of ceramic material, so the heat exchange performance does not deteriorate.
以上のように、本発明の高温流体用熱交換器
は、多数の挿入口を有する上下端板間に多数の金
属製管を挿着し、挿入口内周と管外周との間にニ
ツケルろうの接合部を設け、かつこのニツケルろ
うを管外表面に連続的に設け一体化した熱交換体
を有して成るから、熱交換性能を低下させること
なく耐摩耗性を向上させる。また、熱交換器を一
体化させるためのろう材を有効利用しているか
ら、経済的でもある。 As described above, the high temperature fluid heat exchanger of the present invention has a large number of metal tubes inserted between the upper and lower end plates having a large number of insertion ports, and a nickel solder layer between the inner periphery of the insertion port and the outer periphery of the tubes. Since it has a heat exchanger body in which a joint is provided and the nickel solder is continuously provided on the outer surface of the tube and integrated, wear resistance is improved without deteriorating heat exchange performance. Furthermore, since the brazing material used to integrate the heat exchanger is effectively used, it is also economical.
第１図は、本発明の熱交換器断面図、第２図は
第１図の一部拡大図である。
４……管、１１ａ，１１ｂ……ニツケルろう
材。
FIG. 1 is a sectional view of a heat exchanger of the present invention, and FIG. 2 is a partially enlarged view of FIG. 1. 4...Tube, 11a, 11b...nickel brazing material.
Claims (1)
管が挿着され、挿入口内周と管外周との間がニツ
ケルろうにより固着されるとともに前記管外表面
の全面にわたり前記ニツケルろうの溶融ろうの保
護膜が付着されている熱交換体の上下端板に流入
出口部を設け、また上下端板の側面に流入出口部
を設け、この側面に設けた流入出口部間を高温流
体流路とした高温流体用熱交換器。1. A large number of tubes are inserted between upper and lower end plates having a large number of insertion ports, and the inner periphery of the insertion port and the outer periphery of the tubes are fixed with nickel solder, and the nickel solder is melted over the entire outer surface of the tubes. Inflow/outlet sections are provided on the upper and lower end plates of the heat exchanger to which wax protective films are attached, and inflow/outlet sections are provided on the side surfaces of the upper and lower end plates, and a high-temperature fluid flow path is formed between the inflow/outlet sections provided on the side surfaces. A heat exchanger for high-temperature fluids.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20892982A JPS5997496A (en) | 1982-11-29 | 1982-11-29 | Heat exchanger for high-temperature fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20892982A JPS5997496A (en) | 1982-11-29 | 1982-11-29 | Heat exchanger for high-temperature fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5997496A JPS5997496A (en) | 1984-06-05 |
| JPH0253718B2 true JPH0253718B2 (en) | 1990-11-19 |
Family
ID=16564459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20892982A Granted JPS5997496A (en) | 1982-11-29 | 1982-11-29 | Heat exchanger for high-temperature fluid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5997496A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4843150B2 (en) * | 2001-03-29 | 2011-12-21 | 東京ラヂエーター製造株式会社 | Heat exchanger |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5338696A (en) * | 1976-09-22 | 1978-04-08 | Dresden Arzneimittel | Production of ergosterine derivative |
| JPS57127703A (en) * | 1981-01-30 | 1982-08-09 | Tokyo Shibaura Electric Co | Inlet attack preventer for feed water heater |
-
1982
- 1982-11-29 JP JP20892982A patent/JPS5997496A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5338696A (en) * | 1976-09-22 | 1978-04-08 | Dresden Arzneimittel | Production of ergosterine derivative |
| JPS57127703A (en) * | 1981-01-30 | 1982-08-09 | Tokyo Shibaura Electric Co | Inlet attack preventer for feed water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5997496A (en) | 1984-06-05 |
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