JPH09104877A - Heat exchanger for liquefied petroleum gas - Google Patents
Heat exchanger for liquefied petroleum gasInfo
- Publication number
- JPH09104877A JPH09104877A JP29045195A JP29045195A JPH09104877A JP H09104877 A JPH09104877 A JP H09104877A JP 29045195 A JP29045195 A JP 29045195A JP 29045195 A JP29045195 A JP 29045195A JP H09104877 A JPH09104877 A JP H09104877A
- Authority
- JP
- Japan
- Prior art keywords
- evaporated
- heat exchanger
- coiled pipe
- lpg liquid
- petroleum gas
- 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.)
- Granted
Links
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、液化石油ガス(L
Pガス)の熱交換器における蒸発器の改良に関するもの
である。TECHNICAL FIELD The present invention relates to liquefied petroleum gas (L
The present invention relates to improvement of an evaporator in a heat exchanger for P gas).
【0002】[0002]
【従来の技術】従来から利用されている蒸発器は、主に
2つのタイプがある。1つは瞬間蒸発型蛇管でLPガス
液を完全に気化させ、スーパーヒートさせる構成であ
り、他方は蛇管を採用せずにチャンバー内にLPガス液
を溜めこみ、加熱沸騰させて蒸発させる構成の溜めこみ
型である。2. Description of the Related Art There are mainly two types of evaporators used conventionally. One is a configuration in which the LP gas liquid is completely vaporized and superheated by a flash evaporation type spiral tube, and the other is a configuration in which the LP gas solution is stored in the chamber without adopting the spiral tube and heated and boiled to evaporate. It is a type.
【0003】[0003]
【発明が解決しようとする課題】上記従来例のうち、前
者の蛇管を用いる構成では能力の割に小型化を図ること
ができ、スーパーヒートも可能なので効率がよい。ま
た、多量のLPガス液を熱交換器内部に溜めこまないの
で、安全性が高く、発生するガス圧の脈動もほとんどな
いという利点がある。その反面、LPガスに重質分が含
まれている場合には蛇管内部にこれがこびりつき、熱交
換能力が低下したり、ひどくなれば内部通路の閉塞を引
き起こすおそれがある。また、スーパーヒートのための
熱源に供給する熱量が多く必要となるなどの欠点があ
る。Among the above-mentioned conventional examples, the former configuration using the flexible tube can be downsized for its capability and can be superheated so that it is efficient. Further, since a large amount of LP gas liquid is not stored inside the heat exchanger, there are advantages that the safety is high and there is almost no pulsation of the generated gas pressure. On the other hand, when the LP gas contains heavy components, it may stick to the inside of the flexible pipe, lowering the heat exchange capacity, and if worse, blocking the internal passage. Further, there is a drawback that a large amount of heat is required to be supplied to the heat source for superheat.
【0004】後者の溜めこみ型の場合には、大きい熱源
を必要としないので省力化を図ることができ、さらに常
時湿潤状態を維持するためにLPガスに重質分が含まれ
ていたとしても内部通路にこびりつきにくいという利点
がある。その反面、前者に比べると熱効率が低く、大量
の熱交換を必要とする場合には機器が大型化し、コスト
がかさむと同時に設置スペースも広くなる。また加熱蒸
発をしているために、ガス発生圧力が脈動し、負荷が急
激に変動した場合には安定供給を行うことができないと
いう課題もある。さらに、多量のLPガス液をチャンバ
ー内に溜めこむために安全面での対策が必要になる。し
かも、重質分を除去作業時には多量のLPガス液が同伴
して大気中に放出されるという問題もある。In the latter case, a large heat source is not required, so that labor can be saved. Further, even if the LP gas contains a heavy component in order to always maintain a wet state, the internal portion can be saved. It has the advantage of not sticking to the passage. On the other hand, the heat efficiency is lower than that of the former, and when a large amount of heat exchange is required, the device becomes large, which increases the cost and at the same time increases the installation space. In addition, there is also a problem that stable supply cannot be performed when the gas generation pressure pulsates due to heating and evaporation and the load changes abruptly. Furthermore, a safety measure is required to store a large amount of LP gas liquid in the chamber. Moreover, there is also a problem that a large amount of LP gas liquid is entrained and released into the atmosphere during the work of removing heavy components.
【0005】本発明は上記従来のそれぞれの課題に鑑み
て開発されたもので、1つの装置で従来のそれぞれの利
点を活かしながら、欠点を補完することができる熱交換
器を提供することを目的とする。The present invention was developed in view of the above conventional problems, and an object of the present invention is to provide a heat exchanger capable of complementing the drawbacks while utilizing the respective advantages of the prior art with one device. And
【0006】[0006]
【課題を解決するための手段】本発明では上記目的を達
成するために、ヒータによって加熱される温水槽の内部
に設けられた蛇管と、この蛇管の出口に連続して設けら
れたチャンバー筒とからなり、上記蛇管の熱交換部分は
LPG液が完全に蒸発しない程度の伝熱面積とし、未蒸
発のLPG液を上記チャンバー筒で蒸発させるという手
段を用いることとした。ここでいう伝熱面積とは、蛇管
の太さおよび長さなどによって決定されるもので、熱交
換効率に影響する。In the present invention, in order to achieve the above object, a flexible tube provided inside a hot water tank heated by a heater, and a chamber tube continuously provided at an outlet of the flexible tube. The heat exchange portion of the flexible tube has a heat transfer area such that the LPG liquid does not completely evaporate, and means for evaporating the non-evaporated LPG liquid in the chamber cylinder is used. The heat transfer area here is determined by the thickness and length of the flexible tube and affects the heat exchange efficiency.
【0007】また、ヒータによって加熱される温水槽の
内部に設けられた蛇管と、この蛇管の出口に連続して設
けられたチャンバー筒とからなり、上記蛇管に導入され
るLPG液を一部蒸発させると共に、上記チャンバー筒
で未蒸発のLPG液を蒸発させるという手段も用いてい
る。Further, the LPG liquid introduced into the above-mentioned flexible pipe is partially evaporated by the flexible pipe which is provided inside the hot water tank heated by the heater and the chamber cylinder which is continuously provided at the outlet of this flexible pipe. In addition to the above, a means of evaporating the unvaporized LPG liquid in the chamber cylinder is also used.
【0008】螺旋状の曲管で構成される蛇管は内部清掃
が比較的困難であるので、この蛇管でスーパーヒートさ
せて完全蒸発することは、熱交換率は非常に良い反面、
重質分が焦げ付いたりこびりつく。しかし本発明では、
蛇管では完全にLPG液を蒸発させずに一部だけ蒸発さ
せるので、管壁が絶えずウエット状を維持しており、重
質分のこびりつきを回避している。そしてチャンバー筒
において補完的に未蒸発のLPG液を蒸発させることに
より、両者相まって熱交換率の低下を回避している。[0008] Since it is relatively difficult to clean the inside of a spiral tube composed of a spiral curved tube, it is possible to superheat and completely evaporate the spiral tube, but the heat exchange rate is very good.
Heavy components are scorched or sticky. However, in the present invention,
In the flexible tube, the LPG liquid is not completely evaporated but only a part thereof is evaporated, so that the tube wall is constantly kept in a wet state, and clogging of heavy components is avoided. By complementarily evaporating the non-evaporated LPG liquid in the chamber cylinder, a decrease in the heat exchange rate is avoided in combination with both.
【0009】[0009]
【発明の実施の形態】以下、本発明の実施の形態を添付
した図面に従って説明する。図1および図2は本実施形
態を示す正面図、側面図であって、1は蛇管、2はチャ
ンバー胴、3は温水槽、4は温水ヒータである。蛇管1
は一方側1aからLPG液が供給され、他方出口1bは
チャンバー胴2に接続されている。5はチャンバー胴2
からのガス出口配管、6はガス出口フランジである。ま
た、7は保護管であり、サーモスタットやサーモバルブ
などによって温水槽3の温度制御を行うための温度検出
器などが設けられる公知の構成である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 and 2 are a front view and a side view showing the present embodiment, in which 1 is a flexible tube, 2 is a chamber body, 3 is a hot water tank, and 4 is a hot water heater. Snake 1
Is supplied with LPG liquid from one side 1a, and the other outlet 1b is connected to the chamber body 2. 5 is the chamber body 2
Is a gas outlet pipe, and 6 is a gas outlet flange. Reference numeral 7 is a protective tube, which has a known structure in which a temperature detector for controlling the temperature of the hot water tank 3 is provided by a thermostat or a thermovalve.
【0010】図3は蛇管の全長を第1の実施形態よりも
短くしたもので、他の構造は図1および図2と変わると
ころはない。In FIG. 3, the total length of the flexible tube is shorter than that of the first embodiment, and other structures are the same as those in FIGS. 1 and 2.
【0011】本実施形態では、従来の蛇管と比較して、
その全長を短くしたことに加え、内径を太くした。この
構成により、熱変換効率は従来の蛇管式の熱交換器より
も低くなるが、その分だけ配管内部がウエット状態を維
持するため、LPG液に含まれる重質分が濃縮化するこ
とを回避でき、配管壁面へのタール分等の付着がなくな
る。従って、頻繁に管内清掃を行う必要がなく、可動効
率はかえって向上することになる。尚、本実施形態のう
ち図1の蛇管で予定している蒸発率は、約60〜70%
である。この比率は厳格なものではないが、蒸発率を高
くし過ぎると重質分の管内残留を回避することができな
い反面、低くし過ぎると熱交換率が低下し過ぎて十分な
熱回収を行うことができないからである。蒸発率の決定
は、蛇管の太さと温水槽を通過する管長などの要素に依
存することはいうまでもない。即ち、図3の蛇管を採用
した場合には蒸発率は図1のものよりも低くなる。In this embodiment, as compared with the conventional flexible pipe,
In addition to shortening the overall length, the inner diameter was increased. With this configuration, the heat conversion efficiency is lower than that of the conventional flexible tube type heat exchanger, but since the inside of the pipe is kept wet by that much, it is possible to prevent the heavy components contained in the LPG liquid from being concentrated. As a result, the tar content does not adhere to the wall surface of the pipe. Therefore, it is not necessary to frequently clean the inside of the pipe, and the moving efficiency is rather improved. Note that, in the present embodiment, the evaporation rate planned for the flexible tube of FIG. 1 is about 60 to 70%.
It is. This ratio is not strict, but if the evaporation rate is too high, it will not be possible to avoid heavy components remaining in the tube, but if it is too low, the heat exchange rate will be too low and sufficient heat recovery will be performed. Because you can't. Needless to say, the determination of the evaporation rate depends on factors such as the thickness of the flexible pipe and the length of the pipe passing through the hot water tank. That is, when the flexible tube of FIG. 3 is adopted, the evaporation rate is lower than that of FIG.
【0012】次に、上記蛇管においてある程度LPGを
蒸発させた後は、蛇管出口1bよりチャンバー胴2へL
PGガスとともにLPG液を導入する。そうすると、チ
ャンバー胴2の内部には既蒸発のLPGガスが流入して
通過すると同時に、残りの未蒸発のLPG液が流入して
底部に溜まるが、このLPG液は少量になっているの
で、熱交換効率が悪いチャンバー胴2であっても容易に
蒸発することができる。その結果として、蛇管1に導入
されたLPG液は蛇管1を通過する際に一部蒸発し、更
に未蒸発のLPG液はチャンバー胴2の内部で蒸発し、
全流路を通過してガス出口配管5からLPGガスになっ
て出力する。そして、チャンバー胴2内はもちろんのこ
と、蛇管1内も絶えずウエット状態を維持していること
になる。Next, after the LPG is evaporated to some extent in the above-mentioned flexible tube, the flexible tube outlet 1b is used to transfer the L
The LPG liquid is introduced together with the PG gas. Then, the already-evaporated LPG gas flows into and passes through the inside of the chamber body 2, and at the same time, the remaining un-evaporated LPG liquid flows in and accumulates at the bottom. However, since the amount of this LPG liquid is small, Even the chamber body 2 having poor exchange efficiency can be easily evaporated. As a result, the LPG liquid introduced into the flexible pipe 1 partially evaporates when passing through the flexible pipe 1, and the non-evaporated LPG liquid evaporates inside the chamber body 2,
The LPG gas is output from the gas outlet pipe 5 through all the flow paths. Then, not only the chamber body 2 but also the flexible tube 1 is constantly kept in a wet state.
【0013】[0013]
【発明の効果】本発明では蛇管とチャンバー筒による熱
交換を同時に採用し、蛇管で未蒸発のLPG液を補完的
にチャンバー筒内で蒸発させることとしたので、従来か
らの課題であった蛇管壁に対する重質分のこびりつきを
回避することができたと同時に両者相まって熱交換率を
維持しており、小型で効率よく、さらに保守点検が容易
な構成とすることが可能となった。According to the present invention, the heat exchange by the flexible tube and the chamber cylinder is adopted at the same time, and the un-vaporized LPG liquid is complementarily evaporated by the flexible tube in the chamber cylinder. It was possible to avoid the sticking of heavy components to the pipe wall, while at the same time maintaining the heat exchange rate in combination with both, making it possible to have a structure that is small, efficient, and easy for maintenance and inspection.
【図1】本発明の熱交換器の実施形態を示す一部断面正
面図、FIG. 1 is a partial cross-sectional front view showing an embodiment of a heat exchanger of the present invention,
【図2】同、側面図、FIG. 2 is a side view of the same;
【図3】別の実施形態を示す側面図である。FIG. 3 is a side view showing another embodiment.
1 蛇管 2 チャンバー胴 3 温水槽 4 温水ヒータ 5 ガス出口配管 6 ガス出口フランジ 7 保護管 1 Snake pipe 2 Chamber body 3 Hot water tank 4 Hot water heater 5 Gas outlet pipe 6 Gas outlet flange 7 Protective pipe
Claims (2)
設けられた蛇管と、この蛇管の出口に連続して設けられ
たチャンバー筒とからなり、上記蛇管の熱交換部分はL
PG液が完全に蒸発しない程度の伝熱面積とし、未蒸発
のLPG液を上記チャンバー筒で蒸発させることを特徴
とした液化石油ガスの熱交換器。1. A flexible pipe, which is provided inside a hot water tank heated by a heater, and a chamber cylinder which is continuously provided at the outlet of the flexible pipe. The heat exchange portion of the flexible pipe is L.
A heat exchanger for liquefied petroleum gas, characterized in that the heat transfer area is such that the PG liquid does not completely evaporate, and the non-evaporated LPG liquid is evaporated in the chamber cylinder.
設けられた蛇管と、この蛇管の出口に連続して設けられ
たチャンバー筒とからなり、上記蛇管に導入されるLP
G液を一部蒸発させると共に、上記チャンバー筒で未蒸
発のLPG液を蒸発させることを特徴とした液化石油ガ
スの熱交換器。2. An LP, which comprises a flexible pipe provided inside a hot water tank heated by a heater, and a chamber barrel which is continuously provided at an outlet of the flexible pipe and which is introduced into the flexible pipe.
A heat exchanger for liquefied petroleum gas, characterized in that part of the G liquid is evaporated and the LPG liquid that has not been evaporated in the chamber cylinder is evaporated.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29045195A JP3037599B2 (en) | 1995-10-11 | 1995-10-11 | Liquefied petroleum gas heat exchanger |
CNB021055351A CN1194188C (en) | 1995-10-11 | 1996-10-11 | Liquefied petroleum gas heat exchanging system |
CN 96122736 CN1105288C (en) | 1995-10-11 | 1996-10-11 | Equipment for heat exchanging for liquid petroleum gas |
HK97102657A HK1001138A1 (en) | 1995-10-11 | 1997-12-29 | A heat exchanger of liquefied petroleum gas system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29045195A JP3037599B2 (en) | 1995-10-11 | 1995-10-11 | Liquefied petroleum gas heat exchanger |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09104877A true JPH09104877A (en) | 1997-04-22 |
JP3037599B2 JP3037599B2 (en) | 2000-04-24 |
Family
ID=17756205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP29045195A Expired - Fee Related JP3037599B2 (en) | 1995-10-11 | 1995-10-11 | Liquefied petroleum gas heat exchanger |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3037599B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010100711A (en) * | 2000-05-06 | 2001-11-14 | 김기태 | A fuel-preheater for automobile using LPG |
KR20010110961A (en) * | 2000-06-07 | 2001-12-15 | 김소중 | vaporizer having regenerative medium |
-
1995
- 1995-10-11 JP JP29045195A patent/JP3037599B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010100711A (en) * | 2000-05-06 | 2001-11-14 | 김기태 | A fuel-preheater for automobile using LPG |
KR20010110961A (en) * | 2000-06-07 | 2001-12-15 | 김소중 | vaporizer having regenerative medium |
Also Published As
Publication number | Publication date |
---|---|
JP3037599B2 (en) | 2000-04-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |