JPS6199100A - Exhaust gas heat exchanger - Google Patents
Exhaust gas heat exchangerInfo
- Publication number
- JPS6199100A JPS6199100A JP22096384A JP22096384A JPS6199100A JP S6199100 A JPS6199100 A JP S6199100A JP 22096384 A JP22096384 A JP 22096384A JP 22096384 A JP22096384 A JP 22096384A JP S6199100 A JPS6199100 A JP S6199100A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- pipe
- heat exchanger
- flows
- brine
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 239000004071 soot Substances 0.000 abstract description 15
- 239000012267 brine Substances 0.000 abstract description 13
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract description 13
- 239000002184 metal Substances 0.000 abstract description 2
- 230000006866 deterioration Effects 0.000 abstract 1
- 238000005188 flotation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000007790 scraping Methods 0.000 abstract 1
- 238000013022 venting Methods 0.000 abstract 1
- 238000005192 partition Methods 0.000 description 10
- 238000009423 ventilation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/12—Fluid-propelled scrapers, bullets, or like solid bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/057—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices being entrained discrete elements, e.g. balls, grinding elements, brushes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、エンジンの排気ガスと流体との間で熱交換で
きるようにした排気ガス熱交換器に係り、特に排気ガス
による煤を自動的に除去できるよう改良した排気ガス熱
交換器に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an exhaust gas heat exchanger capable of exchanging heat between engine exhaust gas and fluid, and in particular, relates to an exhaust gas heat exchanger that can automatically remove soot from exhaust gas. This article relates to an improved exhaust gas heat exchanger that can remove
［従来の技術］
一般に、エンジンの排気ガスににる排熱を利用するため
に排気ガス熱交換器が用いられている。[Prior Art] Generally, an exhaust gas heat exchanger is used to utilize exhaust heat in engine exhaust gas.
例えば、エンジン駆動ヒートポンプ装η等においては、
このエンジンめ排気ガスによる排熱のほかにエンジンの
水冷Ｗによる熱を冷ＩＪＩＩ水熱交換器で回収すること
ができるために、電動ヒートポンプ装置よりもエネルギ
ー利用効率が優れており、各種給湯装置等として利用さ
れている。この種のエンジン駆動ヒートポンプ８ｉ置に
用いられる排気ガス熱交換器は、排気ガス管内を流通す
る排気ガスと流体管内を流通するブライン等の流体との
間で相Ｕに熱交換できる貫流式の栴造となっている。For example, in engine-driven heat pump equipment, etc.
In addition to the exhaust heat from the engine exhaust gas, the heat from the water cooling W of the engine can be recovered by the cold IJII water heat exchanger, making it more efficient in energy use than electric heat pump devices, and is used in various water heaters, etc. It is used as. The exhaust gas heat exchanger used in this type of engine-driven heat pump 8i is a once-through type heat exchanger that can exchange heat between the exhaust gas flowing in the exhaust gas pipe and the fluid such as brine flowing in the fluid pipe. It is constructed.
［゛発明が解決しようとする問題点］
しかしながら、このような従来の排気ガス熱交換器では
、排気ガスが流通する熱交換器内部に煤が付着堆積して
熱交換効率を著しく低下させていた。又、煤が付着した
場合には、定期的に熱交換器を分解して清掃しなければ
ならず煩しい作業を必要としていた。[Problems to be solved by the invention] However, in such conventional exhaust gas heat exchangers, soot adheres and accumulates inside the heat exchanger through which exhaust gas flows, significantly reducing heat exchange efficiency. . Furthermore, if soot adheres to the heat exchanger, the heat exchanger must be periodically disassembled and cleaned, which requires troublesome work.
尚、実開昭４７−４３１２号公報には、排気ガス清浄装
置における循環式冷却装置に関する従来の技術が開示さ
れているが、この従来の技術は内部に付着した排気ガス
の煤を除去できるものではない。Incidentally, Japanese Utility Model Application Publication No. 47-4312 discloses a conventional technique regarding a circulation type cooling device in an exhaust gas purifying device, but this conventional technique is capable of removing soot from exhaust gas adhering to the inside. isn't it.
本発明は、このような従来の問題点等に着目してなされ
たもので、排気ガス熱交換器内部に付着堆積する煤を、
何ら煩しい作業を必要とせず自動的に除去して、熱交換
効率の低下を防止できる排気ガス熱交換器を提供するこ
とを目的としている。The present invention has been made by focusing on such conventional problems, and is aimed at reducing soot that adheres and accumulates inside an exhaust gas heat exchanger.
It is an object of the present invention to provide an exhaust gas heat exchanger that can be automatically removed without any troublesome work and can prevent a decrease in heat exchange efficiency.
［問題点を解決するための手段１
上記問題点を解決するために、本発明の排気ガス熱交換
器は、排気ガスが流れる排気ガス管内に、該排気ガスで
浮遊するとともに、外面に突起を形成した浮遊体を多数
収納するように構成している。[Means for Solving the Problems 1] In order to solve the above problems, the exhaust gas heat exchanger of the present invention has a structure in which the exhaust gas floats in the exhaust gas pipe through which the exhaust gas flows, and has protrusions on the outer surface. It is configured to store a large number of formed floating bodies.
［作用］
次に作用を説明する。排気ガス管内に収納された多数の
浮遊体は排気ガスにより浮遊し、排気ガス管の内面、あ
るいは液体の流れる流体管の外面に衝突して付着堆積し
た煤を該浮遊体外面の突起で掻き落す。そして、この掻
き落された煤は排気ガスとともに外部に排出される。従
って、内部に付着堆積する煤を、何ら煩しい作業を必要
とせずに自動的に除去して、熱交換効率の低下を防止す
ることができる。[Operation] Next, the operation will be explained. A large number of floating bodies housed in the exhaust gas pipe are suspended by the exhaust gas, and the protrusions on the outer surface of the floating bodies scrape off the soot deposited by colliding with the inner surface of the exhaust gas pipe or the outer surface of the fluid pipe through which liquid flows. . This scraped soot is then discharged to the outside together with the exhaust gas. Therefore, the soot deposited inside can be automatically removed without any troublesome work, and a decrease in heat exchange efficiency can be prevented.
［実施例］
以下図面を参照して本発明による実施例を具体的に説明
する。[Examples] Examples according to the present invention will be specifically described below with reference to the drawings.
第１図乃至第４図は本発明の第一実施例に係り、第１図
は排気ガス熱交換器の断面図、第２図は浮遊体の斜視図
、第３図は第２図の浮遊体を構成する１枚の板材の正面
図、第４図は第３図の側面図である。1 to 4 relate to the first embodiment of the present invention, FIG. 1 is a sectional view of the exhaust gas heat exchanger, FIG. 2 is a perspective view of the floating body, and FIG. 3 is the floating body of FIG. 2. FIG. 4 is a front view of one plate forming the body, and FIG. 4 is a side view of FIG. 3.
これらの図において符号１は排気ガス熱交換器であり、
この排気ガス熱交換器１は排気ガスが流通する排気ガス
管２に外筒管３を外装した二垂管に形成され、その上端
側を上部仕切板４で、又その下端側を中央が次第に低く
なるよう傾斜を形成した底部仕切板５で閉塞されている
。前記底部仕切板５の中央部の最も低くなった部分には
、排気ガス管２内に連通する排気ガス入口管６が接続さ
れ、又その接続口部分には小孔が多数形成された下側通
気板７が設けられている。前記上部仕切板４のほぼ中央
部には、排気ガス管２内に連通ずる排気ガス出口管８が
接続され、又その接続口部分には小孔が多数形成された
上側通気板９が設けられている。又、前記排気ガス管２
内の上部には、ブラインが流入するダ久°ト部１０が設
けられている。そして、このダクト部１０の一側部には
、該ダクト部１０内部に連通ずるブライン入口管１１の
一端が接続され、他端側は排気ガス管２と外筒管３の側
壁をともに貫通して外部に延出されている。又、前記ダ
クト部１０の下側には、該ダクト部１０内部に連通ずる
ブラインが流れる流体管１２、・・・の一端が接続され
、他端側は排気ガス管２内を通って下側の底部仕切板５
を貫通して外に突出され、さらにその端部側をほぼＵ字
状に曲折して、再び底部仕切板５に外筒管３内に連通す
るよう接続されている。前記外筒管３の上側の一側部に
は、該外筒管３内に連通ずるブライン出口管１３が接続
されている。In these figures, numeral 1 is an exhaust gas heat exchanger,
This exhaust gas heat exchanger 1 is formed into two vertical pipes in which an exhaust gas pipe 2 through which exhaust gas flows is sheathed with an outer cylindrical pipe 3, and the upper end thereof is surrounded by an upper partition plate 4, and the lower end thereof is gradually It is closed by a bottom partition plate 5 which is sloped to be lower. An exhaust gas inlet pipe 6 that communicates with the inside of the exhaust gas pipe 2 is connected to the lowest central part of the bottom partition plate 5, and the lower part of the bottom partition plate 5 has a number of small holes formed at its connection port. A ventilation plate 7 is provided. An exhaust gas outlet pipe 8 communicating with the inside of the exhaust gas pipe 2 is connected to approximately the center of the upper partition plate 4, and an upper ventilation plate 9 in which a large number of small holes are formed is provided at the connection port. ing. Moreover, the exhaust gas pipe 2
A duct section 10 into which brine flows is provided at the upper part of the chamber. One end of a brine inlet pipe 11 communicating with the inside of the duct part 10 is connected to one side of the duct part 10, and the other end passes through the side walls of both the exhaust gas pipe 2 and the outer cylinder pipe 3. It is extended outside. Further, one end of a fluid pipe 12, through which brine flows, which communicates with the inside of the duct part 10, is connected to the lower side of the duct part 10, and the other end passes through the exhaust gas pipe 2 to the lower side. bottom partition plate 5
The end portion thereof is bent into a substantially U-shape, and is again connected to the bottom partition plate 5 so as to communicate with the inside of the outer cylindrical tube 3. A brine outlet pipe 13 communicating with the inside of the outer tube 3 is connected to one upper side of the outer tube 3.
一方、前記排気ガス管２内には、多数の浮遊体１４、・
・・が収納されている。この浮遊体１４は耐熱性の薄い
金属等の材質からなる円板状で、その円板の周囲にのこ
ぎり状の多数の突起１５．・・・を形成した同形の３枚
の板材１６．１６．１６からなり、その板材１６．１６
．１６の中心部を共通にするとともに、該板材１６．１
６．１６のそれぞれの平面が互に直角となるように組合
わされて構成されている。尚、前記浮遊体１４の垂さは
排気ガスにより浮遊する程度であり、又その大きさは前
記上側および下側通気板７．９に形成された小孔よりも
大きく形成されている。On the other hand, inside the exhaust gas pipe 2, a large number of floating bodies 14,
... is stored. The floating body 14 has a disc shape made of a heat-resistant thin metal or the like, and has many saw-shaped protrusions 15 around the disc. Consisting of three plates 16.16.16 of the same shape forming ..., the plate 16.16
．． 16, and the center part of the plate material 16.1 is made common.
6.16 planes are combined so that they are perpendicular to each other. The height of the floating body 14 is such that it is suspended by the exhaust gas, and its size is larger than the small holes formed in the upper and lower ventilation plates 7.9.
このような構成では、排気ガスは排気ガス入口管６より
流入し排気ガス管２を流れて排気ガス出口管８より排出
され、一方ブラインはブライン入口管１１より流入しダ
クト部１０．流体管１２゜・・・を流れ、さらに排気ガ
ス管２と外筒管３とで囲われた部分を流れブライン出口
管１３より排出され、排気ガスとブラインとの間で熱交
換が行われる。このとき、排気ガス管２内に収納された
浮遊体１４．・・・は排気ガスにより浮遊し、流体管１
２゜・・・の外面、ダクト部１０外面あるいは排気ガス
管２の内面に衝突して、それらの表面に付着堆積した煤
が突起１５．・・・により掻き落される。そして、前記
掻き落された煤は排気ガスとともに外に排出される。従
って、排気ガス熱交換器１を分解して清掃する等の煩し
い作業をすることなく自動的に煤を除去して熱交換効率
の低下を防止することができる。In such a configuration, exhaust gas flows from the exhaust gas inlet pipe 6, flows through the exhaust gas pipe 2, and is discharged from the exhaust gas outlet pipe 8, while brine flows from the brine inlet pipe 11 and flows through the duct section 10. It flows through the fluid pipes 12.degree., further flows through a portion surrounded by the exhaust gas pipe 2 and the outer cylinder pipe 3, and is discharged from the brine outlet pipe 13, where heat exchange is performed between the exhaust gas and brine. At this time, the floating body 14 accommodated in the exhaust gas pipe 2. ... is suspended by the exhaust gas, and the fluid pipe 1
2°..., the outer surface of the duct part 10, or the inner surface of the exhaust gas pipe 2, and the soot that adheres and accumulates on those surfaces is deposited on the protrusion 15. It is scraped off by... The scraped off soot is then discharged to the outside together with the exhaust gas. Therefore, it is possible to automatically remove soot and prevent a decrease in heat exchange efficiency without performing troublesome work such as disassembling and cleaning the exhaust gas heat exchanger 1.
尚、この実施例では底部仕切板５中火の排気ガス入口管
６の接続部分において最も低く形成されているために、
浮遊体１４がこの部分に集まり再び浮遊するようになっ
ている。又、浮遊体１４は下側および上側通気板７．９
に形成された小孔よりも大きいため外に排出されること
がない。In this embodiment, since the bottom partition plate 5 is formed at the lowest point at the connection part of the medium-heat exhaust gas inlet pipe 6,
The floating bodies 14 gather in this part and become floating again. The floating body 14 also has lower and upper ventilation plates 7.9.
Because it is larger than the small hole formed in the hole, it cannot be discharged outside.
第５図は本発明の第二実施例に係り浮遊体の斜視図であ
る。FIG. 5 is a perspective view of a floating body according to a second embodiment of the present invention.
この実施例では、第一実施例と同様の構造からなる排気
ガス熱交換器の排気ガス管２内部に第５図に示す浮遊体
２１が多数収納された構成となっている。この浮遊体２
１は球状体の表面に多数の突起２２が形成されており、
第一実施例と同様の大きさおよび重さになっているとと
もに、耐熱性材料で形成され適度の硬さを有している。In this embodiment, a large number of floating bodies 21 shown in FIG. 5 are housed inside the exhaust gas pipe 2 of the exhaust gas heat exchanger having the same structure as the first embodiment. This floating body 2
1 has a large number of protrusions 22 formed on the surface of a spherical body,
It has the same size and weight as the first embodiment, and is made of a heat-resistant material and has appropriate hardness.
このような構成では、浮遊体２１．・・・が第一実施例
と同様に作用する。In such a configuration, the floating body 21. ... works in the same way as in the first embodiment.
尚、前記実施例において浮遊体１４．２１は排気ガスに
より浮遊するとともに、表面に煤を掻き落すことができ
る突起１５．２２が形成されていればよく、その全体の
形状も球状等に限定されることなく任意の形状にするこ
とができる。又、排気ガス熱交換器の構造は、排気ガス
と流体とが熱交換できる貫流式等のものであればよ〈実
施例に限定されない。Incidentally, in the above embodiment, the floating body 14.21 only needs to be floated by the exhaust gas and have protrusions 15.22 formed on the surface that can scrape off soot, and the overall shape is also limited to a spherical shape or the like. It can be made into any shape without needing to be shaped. Further, the structure of the exhaust gas heat exchanger is not limited to the embodiments, as long as it is of a once-through type or the like in which exhaust gas and fluid can exchange heat.
［発明の効果］
以上説明したように本発明によれば、排気ガス熱交換器
内部の排気ガス管内に外面に突起を形成した浮遊体を多
数収納するようにしているために、その内部に付着堆積
した煤を、何ら煩しい作業を必要とせずに自動的に除去
し、外に排出でき、熱交換効率の低下を防止できる効果
がある。[Effects of the Invention] As explained above, according to the present invention, a large number of floating bodies having protrusions formed on the outer surface are housed in the exhaust gas pipe inside the exhaust gas heat exchanger, so that there is no adhesion to the inside of the floating bodies. Accumulated soot can be automatically removed and discharged to the outside without the need for any troublesome work, which has the effect of preventing a decrease in heat exchange efficiency.
第１図乃至第４図は本発明の第一実施例に係り、第１図
は排気ガス熱交換器の断面図、第２図は浮遊体の斜視図
、第３図は第２図の浮遊体を構成する１枚の板材の正面
図、第４図は第３図の側面図、第５図は本発明の第二実
施例に係り浮遊体の斜視図である。
１・・・排気ガス熱交換器
２・・・排気ガス管 ３・・・外筒管４・・・°
上部仕切板 ５・・・底部仕切板６・・・排気ガ
ス入口管 ８・・・排気ガス出口管１１・・・ブライ
ン入口管 １２・・・流体管１３・・・ブ）イン出口管
１４．２１・・・浮遊体１５．２２・・・突起
代理人 弁理士 伊 藤 進１゛Ｉ＋１．′、−
・ノ
ーさｔｌ−〆
第１図
第３図 第４図1 to 4 relate to the first embodiment of the present invention, FIG. 1 is a sectional view of the exhaust gas heat exchanger, FIG. 2 is a perspective view of the floating body, and FIG. 3 is the floating body of FIG. 2. FIG. 4 is a side view of FIG. 3, and FIG. 5 is a perspective view of a floating body according to a second embodiment of the present invention. 1...Exhaust gas heat exchanger 2...Exhaust gas pipe 3...Outer cylinder pipe 4...°
Upper partition plate 5...Bottom partition plate 6...Exhaust gas inlet pipe 8...Exhaust gas outlet pipe 11...Brine inlet pipe 12...Fluid pipe 13...B) Inlet outlet pipe 14. 21...Floating body 15.22...Protrusion agent Patent attorney Susumu Ito 1゛I+1. ′,−
・Nosa tl-〆Figure 1 Figure 3 Figure 4
Claims (1)
流体との間で熱交換するようにした排気ガス熱交換器に
おいて、前記排気ガス管内に、排気ガスで浮遊するとと
もに外面に突起を形成した浮遊体を多数収納するように
したことを特徴とする排気ガス熱交換器。In an exhaust gas heat exchanger that exchanges heat between exhaust gas flowing in an exhaust gas pipe and fluid flowing in a fluid pipe, a protrusion is formed on the outer surface of the exhaust gas pipe while floating in the exhaust gas. An exhaust gas heat exchanger characterized by storing a large number of floating bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22096384A JPS6199100A (en) | 1984-10-19 | 1984-10-19 | Exhaust gas heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22096384A JPS6199100A (en) | 1984-10-19 | 1984-10-19 | Exhaust gas heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6199100A true JPS6199100A (en) | 1986-05-17 |
Family
ID=16759296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22096384A Pending JPS6199100A (en) | 1984-10-19 | 1984-10-19 | Exhaust gas heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6199100A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006010771A1 (en) * | 2004-07-29 | 2006-02-02 | Twister B.V. | Heat exchanger vessel with means for recirculating cleaning particles |
-
1984
- 1984-10-19 JP JP22096384A patent/JPS6199100A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006010771A1 (en) * | 2004-07-29 | 2006-02-02 | Twister B.V. | Heat exchanger vessel with means for recirculating cleaning particles |
| EA009751B1 (en) * | 2004-07-29 | 2008-04-28 | Твистер Б.В. | Heat exchanger vessel with means for recirculating cleaning particles |
| US7900691B2 (en) | 2004-07-29 | 2011-03-08 | Twister B.V. | Heat exchanger vessel with means for recirculating cleaning particles |
| CN101010557B (en) | 2004-07-29 | 2011-06-08 | 缠绕机公司 | Heat exchanger vessel with means for recirculating cleaning particles |
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