JP2003254680A - Heat exchanger and absorption refrigerating machine using it - Google Patents
Heat exchanger and absorption refrigerating machine using itInfo
- Publication number
- JP2003254680A JP2003254680A JP2002051117A JP2002051117A JP2003254680A JP 2003254680 A JP2003254680 A JP 2003254680A JP 2002051117 A JP2002051117 A JP 2002051117A JP 2002051117 A JP2002051117 A JP 2002051117A JP 2003254680 A JP2003254680 A JP 2003254680A
- Authority
- JP
- Japan
- Prior art keywords
- heat transfer
- transfer tube
- heat exchanger
- pipe
- absorption
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、熱交換器に係り、
特にコンパクトで高性能な流下液膜式熱交換器とそれを
用いた吸収冷凍機に関する。TECHNICAL FIELD The present invention relates to a heat exchanger,
In particular, it relates to a compact and high-performance falling-film heat exchanger and an absorption refrigerator using the same.
【０００２】[0002]
【従来の技術】従来の、吸収冷凍機用の熱交換器、特に
蒸発器、吸収器、再生器、凝縮器は、流下液膜式熱交換
器としてシェル＆チューブ型が主に使用されてきた。こ
の熱交換器は、各種高性能伝熱管の開発により、かなり
コンパクトになってはきたが、更なるコンパクト化、高
性能化のために、近年ではプレート熱交換器が提案され
ている。しかしながら、従来のプレート熱交換器には解
決すべき次の問題がある。
薄板の周囲及び内部流路に多数設けられた凹凸部を、
ロー接又は溶接等により接合しているが、この接合部の
一部に不完全部があると気密不良及び強度不足が起こり
信頼性確保に難点がある。
広い伝熱面全体に渡り、薄くて均一な流下液膜を形成
することが難しい。
市販の伝熱管に比較してコストが高い。
また、吸収冷凍機内においては冷媒蒸気流速がかなり高
く、これによる圧力損失が吸収冷凍機の性能低下をもた
らす要因となっている。2. Description of the Related Art Conventional heat exchangers for absorption refrigerators, particularly evaporators, absorbers, regenerators and condensers, have mainly been shell-and-tube type as falling-film heat exchangers. . This heat exchanger has become considerably compact due to the development of various high-performance heat transfer tubes, but in recent years, a plate heat exchanger has been proposed for further compactness and higher performance. However, the conventional plate heat exchanger has the following problems to be solved. The uneven part provided in the periphery of the thin plate and in the internal flow path,
Although they are joined by brazing, welding, or the like, if there is an incomplete portion in a portion of this joint, airtightness is poor and strength is insufficient, and it is difficult to secure reliability. It is difficult to form a thin and uniform falling film over the wide heat transfer surface. High cost compared to commercial heat transfer tubes. In addition, the refrigerant vapor flow velocity is considerably high in the absorption refrigerator, and the pressure loss due to this is a factor causing the performance of the absorption refrigerator to deteriorate.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、上記従来技
術の問題点を解決し、均一な流下液膜を形成して、安価
で強い熱交換器と、それを用いたコンパクトで高性能な
吸収冷凍機を提供することを課題とする。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, forms a uniform falling liquid film, and is an inexpensive and strong heat exchanger, and a compact and high-performance heat exchanger using the same. An object is to provide an absorption refrigerator.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
に、本発明では、伝熱管の内部を流れる管内流体と外部
を流れる管外流体との間で熱交換を行う熱交換器におい
て、前記伝熱管が水平方向に配置され、該伝熱管の外面
をほぼ密接するように上下方向に複数積層して伝熱管ユ
ニットとし、該伝熱管ユニットを水平方向に所定間隔で
複数配列すると共に、前記伝熱管両端部が、管板又は管
内流体用のヘッダーと接合され、該伝熱管は、両端部の
形状が円形であり、両端部以外の中間部の形状が上下方
向に長い長円形又は大略長四角形であり、中間部におけ
る上下方向の高さ寸法が両端部の外径より大きいことと
したものである。前記熱交換器において、伝熱管外表面
は、濡れ性向上のための親水性処理が施されているのが
よい。In order to solve the above problems, the present invention provides a heat exchanger for exchanging heat between an in-tube fluid flowing inside a heat transfer tube and an out-tube fluid flowing outside thereof. The heat transfer tubes are arranged in a horizontal direction, and a plurality of heat transfer tube units are vertically stacked so that the outer surfaces of the heat transfer tubes are in close contact with each other to form a heat transfer tube unit. Both ends of the heat pipe are joined to a tube plate or a header for a fluid in the pipe, and the heat transfer pipe has a circular shape at both ends, and an intermediate portion other than the both ends has an elongated oval shape or a substantially oblong shape. The height dimension in the vertical direction of the intermediate portion is larger than the outer diameter of both end portions. In the heat exchanger, the outer surface of the heat transfer tube is preferably subjected to a hydrophilic treatment for improving wettability.
【０００５】また、本発明では、吸収冷凍機を構成する
蒸発器、吸収器、再生器又は凝縮器の機器のうち、少な
くとも一つに前記の熱交換器を用いたことを特徴とする
吸収冷凍機としたものである。上記本発明の吸収冷凍機
は、前記熱交換器を、凝縮器として用いるか、又は、前
記伝熱管ユニットの上部に冷媒の散布装置を設けて蒸発
器とに用いることができ、また、伝熱管ユニットの上部
に吸収溶液の散布装置を設け、吸収器又は再生器として
用いることができる。また、本発明の吸収冷凍機は、前
記熱交換器を、伝熱管ユニットの上部に交互に冷媒散布
装置、吸収溶液散布装置を設け、下部に冷媒又は吸収溶
液のいずれかを分離回収するための回収器を設けて、交
互に蒸発器、吸収器として用いるか、又は、前記熱交換
器を、伝熱管ユニットの上部に一列おきに吸収溶液散布
装置を設け、下部に冷媒又は吸収溶液のいずれかを分離
回収するための回収器を設けて、交互に再生器、凝縮器
として用いることができる。Further, in the present invention, the above-mentioned heat exchanger is used for at least one of the evaporator, the absorber, the regenerator, and the condenser constituting the absorption refrigerating machine. It was an opportunity. In the absorption refrigerator of the present invention, the heat exchanger can be used as a condenser, or can be used as an evaporator by providing a refrigerant spraying device on the upper portion of the heat transfer tube unit. An absorption solution spraying device is provided on the upper part of the unit and can be used as an absorber or a regenerator. Further, the absorption refrigerating machine of the present invention, the heat exchanger, for alternately providing a refrigerant spraying device, an absorbing solution spraying device in the upper part of the heat transfer tube unit, for separating and recovering either the refrigerant or the absorbing solution in the lower part. A recovery device is provided and used alternately as an evaporator and an absorption device, or the heat exchanger is provided with an absorption solution spraying device in every other row in the upper part of the heat transfer tube unit, and either the refrigerant or the absorption solution is provided in the lower part. A recovering device for separating and recovering can be used alternately as a regenerator and a condenser.
【０００６】[0006]
【発明の実施の形態】次に、本発明を図面を用いて詳細
に説明する。図１は、本発明の熱交換器の一例を示す断
面構成図の平面図である。図１では、シェル１と両端の
管板２で構成された容器内に、伝熱管ユニット４が６個
配置されている。図２は、本発明の熱交換器の他の例を
示す断面構成図で、（ａ）は正面図、（ｂ）は側面図、
（ｃ）は（ａ）のＸ−Ｘの断面図、（ｄ）は（ａ）のＹ
部拡大図である。図２（ａ）では、伝熱管３が５本積層
された伝熱管ユニット４が両端の管板に接合されている
状態を示している。管板と伝熱管との固定は、拡管、溶
接、ロー接いずれでも良い。伝熱管ユニット４の上部に
液散布装置５を設け、伝熱管外部に液体が流下するする
ように構成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view of a cross-sectional configuration diagram showing an example of the heat exchanger of the present invention. In FIG. 1, six heat transfer tube units 4 are arranged in a container composed of a shell 1 and tube plates 2 at both ends. FIG. 2 is a cross-sectional configuration diagram showing another example of the heat exchanger of the present invention, (a) is a front view, (b) is a side view,
(C) is a cross-sectional view taken along line XX of (a), and (d) is Y of (a).
FIG. FIG. 2A shows a state in which the heat transfer tube unit 4 in which five heat transfer tubes 3 are stacked is joined to the tube plates at both ends. The tube plate and the heat transfer tube may be fixed by any of tube expansion, welding and brazing. A liquid spraying device 5 is provided above the heat transfer tube unit 4 so that the liquid flows down to the outside of the heat transfer tube.
【０００７】図２（ｂ）において、伝熱管端部では管板
２に固定するためのスペースとして、ピッチＰ１、Ｐ２
が設けられている。ピッチＰ１、Ｐ２は伝熱管３の管外
径に応じて任意に決定できる。図２（ｂ）では、伝熱管
３が、５本及び４本で構成された伝熱管ユニット４が３
個配置されている。また、伝熱管の配置が、千鳥状に配
置してあるが、もちろん、碁盤目状に配置してもよい。
図２（ｃ）の（ａ）のＸ−Ｘ断面図では、長円形状の５
本の伝熱管３が上下に密接して積層されて、伝熱管ユニ
ット４を形成している。伝熱管３外部には散布装置から
散布された冷媒又は吸収溶液が流下している状態が図示
されている。In FIG. 2B, pitches P1 and P2 are provided at the end of the heat transfer tube as spaces for fixing to the tube sheet 2.
Is provided. The pitches P1 and P2 can be arbitrarily determined according to the outer diameter of the heat transfer tube 3. In FIG. 2B, the heat transfer tube unit 4 including five and four heat transfer tubes 3 is three.
Individually arranged. Further, the heat transfer tubes are arranged in a staggered pattern, but of course they may be arranged in a grid pattern.
In the cross-sectional view taken along line XX of FIG.
The heat transfer tubes 3 of a book are vertically and closely stacked to form a heat transfer tube unit 4. A state in which the refrigerant or the absorbing solution sprayed from the spraying device flows down to the outside of the heat transfer tube 3 is illustrated.
【０００８】本発明によれば、長円形状の伝熱管の密接
面においては、円形伝熱管に比較し、密接面の窪みが浅
いので熱抵抗が軽減され、横方向の薄い液溜りが形成さ
れ、これにより伝熱管外面に均等な薄膜を形成すること
が可能であるが、更に濡れ広がり性を高めるために、伝
熱管外面に親水性処理を施すことが好ましい。親水性処
理としては、酸化皮膜、ショットブラスト、金属の溶射
等により伝熱管表面に凹凸を形成することにより達成で
きる。伝熱管３の密接部隙間は特に規定しないが、０〜
２ｍｍ程度が好ましい。伝熱管３の端部形状は、図２
（ｄ）に示すように、伝熱管中央部では伝熱管はお互い
に密接しているが、伝熱管端部では離れている。伝熱管
中央部の外径Ｄ、及び伝熱管端部の外径ｄは、必要な接
合スペースに応じて任意に決定できる。According to the present invention, in the close contact surface of the elliptical heat transfer tube, as compared with the circular heat transfer tube, the recess of the close contact surface is shallower, so that the thermal resistance is reduced and a thin lateral liquid pool is formed. Although this makes it possible to form a uniform thin film on the outer surface of the heat transfer tube, it is preferable to apply a hydrophilic treatment to the outer surface of the heat transfer tube in order to further enhance the wet spreadability. The hydrophilic treatment can be achieved by forming irregularities on the surface of the heat transfer tube by means of an oxide film, shot blasting, metal spraying, or the like. Although the close contact gap of the heat transfer tube 3 is not specified,
About 2 mm is preferable. The end shape of the heat transfer tube 3 is shown in FIG.
As shown in (d), the heat transfer tubes are in close contact with each other at the center of the heat transfer tube, but are separated at the end of the heat transfer tube. The outer diameter D of the central portion of the heat transfer tube and the outer diameter d of the end portion of the heat transfer tube can be arbitrarily determined according to the required joining space.
【０００９】図３は、本発明の熱交換器を吸収冷凍機に
用いた一例を示す断面構造図である。図３では、シェル
１に囲まれた容器内に、蒸発器用伝熱管ユニット４Ｅと
吸収器用伝熱管ユニット４Ａが左右に配置されている。
蒸発器用伝熱管ユニット４Ｅでは、伝熱管内に冷水が流
れ、伝熱管外部には、液散布装置５Ｅから冷媒液が流下
し、流下途中で冷水と熱交換して冷媒液の一部が蒸発す
る。吸収器用伝熱管ユニット４Ａでは、伝熱管内に冷却
水が流れ、伝熱管外部には、液散布装置５Ａから吸収溶
液が流下し、流下途中で蒸発器からの冷媒蒸気を吸収す
る。FIG. 3 is a sectional structural view showing an example in which the heat exchanger of the present invention is used in an absorption refrigerator. In FIG. 3, an evaporator heat transfer tube unit 4E and an absorber heat transfer tube unit 4A are arranged on the left and right in a container surrounded by the shell 1.
In the evaporator heat transfer tube unit 4E, the cold water flows inside the heat transfer tube, and the refrigerant liquid flows down from the liquid spraying device 5E to the outside of the heat transfer tube. During cooling, the refrigerant water exchanges heat with the cold water and a part of the refrigerant liquid evaporates. . In the absorber heat transfer tube unit 4A, the cooling water flows inside the heat transfer tube, and the absorbing solution flows down from the liquid spraying device 5A to the outside of the heat transfer tube, and absorbs the refrigerant vapor from the evaporator during the flow.
【００１０】蒸発器と吸収器間には、液滴の飛散を防止
するエリミネータ６が配置されている。また、蒸発器下
部の冷媒溜めと吸収器下部の吸収溶液溜め間の熱ロスを
防止するために、逆Ｕ字上の断熱空間を設けている。蒸
発器部分を再生器に置き換え、さらに吸収器部分を凝縮
器に置き換えることもできる。この場合は、凝縮器部に
は液散布装置５Ａは不要となる。再生器用伝熱管ユニッ
トでは、伝熱管内に加熱用流体（蒸気、温水等）が流
れ、伝熱管外部では吸収溶液が流下し、流下途中で吸収
溶液から冷媒蒸気を発生させる。凝縮器用伝熱管ユニッ
トでは、伝熱管内に冷却水が流れ、伝熱管外部では再生
器からの冷媒蒸気が凝縮し、この凝縮した冷媒液が流下
する。An eliminator 6 is arranged between the evaporator and the absorber to prevent the droplets from scattering. Further, in order to prevent heat loss between the refrigerant reservoir in the lower part of the evaporator and the absorbent solution reservoir in the lower part of the absorber, an inverted U-shaped heat insulating space is provided. It is also possible to replace the evaporator part with a regenerator and further replace the absorber part with a condenser. In this case, the liquid spraying device 5A is unnecessary in the condenser section. In the heat exchanger tube unit for a regenerator, a heating fluid (steam, hot water, etc.) flows in the heat exchanger tube, an absorbing solution flows down outside the heat exchanger tube, and a refrigerant vapor is generated from the absorbing solution in the middle of the flowing down. In the heat transfer tube unit for the condenser, the cooling water flows inside the heat transfer tube, the refrigerant vapor from the regenerator is condensed outside the heat transfer tube, and the condensed refrigerant liquid flows down.
【００１１】図４は、本発明の熱交換器を吸収冷凍機に
用いた他の例を示す断面構造図である。図４では、シェ
ル１に囲まれた容器内に、蒸発器用伝熱管ユニット４Ｅ
と吸収器用伝熱管ユニット４Ａが交互に３個配置されて
いる。このように配置すると、蒸発器で蒸発した冷媒蒸
気は隣接する吸収器伝熱管ユニットに向かって流れるの
で、蒸気流速は極めて遅いため、圧力損失が小さく、吸
収冷凍機の性能を改善することができる。蒸発器用伝熱
管ユニットでは、伝熱管内に冷水が流れ、伝熱管外部に
は冷媒液が流下し、流下途中で冷水と熱交換して冷媒液
の一部が蒸発する。吸収器用伝熱管ユニットでは、伝熱
管内に冷却水が流れ、伝熱管外部には吸収溶液が流下
し、流下途中で蒸発器からの冷媒蒸気を吸収する。蒸発
器用伝熱管ユニット４Ｅの上部には、冷媒散布装置５Ｅ
が、また吸収器用伝熱管ユニット４Ａの上部には、吸収
溶液散布装置５Ａが配置されている。FIG. 4 is a sectional structural view showing another example in which the heat exchanger of the present invention is used in an absorption refrigerator. In FIG. 4, an evaporator heat transfer tube unit 4E is provided in a container surrounded by the shell 1.
And three heat transfer tube units 4A for absorbers are arranged alternately. With this arrangement, the refrigerant vapor evaporated in the evaporator flows toward the adjacent absorber heat transfer tube unit, so the vapor flow velocity is extremely low, so the pressure loss is small and the performance of the absorption refrigerator can be improved. . In the heat transfer tube unit for an evaporator, cold water flows inside the heat transfer tube, the refrigerant liquid flows down to the outside of the heat transfer tube, and heat is exchanged with the cold water during the flow to partially evaporate the refrigerant liquid. In the heat transfer tube unit for the absorber, cooling water flows inside the heat transfer tube, the absorbing solution flows down outside the heat transfer tube, and the refrigerant vapor from the evaporator is absorbed during the flow. At the top of the evaporator heat transfer tube unit 4E, a refrigerant spraying device 5E is provided.
However, an absorbing solution spraying device 5A is arranged above the absorber heat transfer tube unit 4A.
【００１２】この散布装置５Ｅ、５Ａは、各伝熱管ユニ
ットと一体に成形しても良いし、単独で設置しても良
い。また、この散布装置においても、液体が接する面に
は親水性処理を施すことが好ましい。この親水性処理に
より、良好な散布状態を得ることが可能となる。蒸発器
用伝熱管ユニット４Ｅの下部又は吸収器用伝熱管ユニッ
ト４Ａの下部には、冷媒と吸収溶液を分離して回収する
ための回収器７を設ける。図４は、回収器７を蒸発器用
伝熱管ユニットの下部に設けた例である。この回収器で
回収された冷媒液は、冷媒液溜め部（図示せず）に導か
れ、吸収溶液との混合を防止することができる。図４で
も、蒸発器部分を再生器に置き換え、さらに吸収器部分
を凝縮器に置き換えることもできる。この場合は、凝縮
器部には液散布装置５Ａは不要となる。The spraying devices 5E and 5A may be formed integrally with each heat transfer tube unit or may be installed independently. Also in this spraying device, it is preferable that the surface in contact with the liquid is subjected to hydrophilic treatment. This hydrophilic treatment makes it possible to obtain a good spraying state. At the bottom of the evaporator heat transfer tube unit 4E or the absorber heat transfer tube unit 4A, a collector 7 for separating and collecting the refrigerant and the absorbing solution is provided. FIG. 4 shows an example in which the collector 7 is provided at the bottom of the evaporator heat transfer tube unit. The refrigerant liquid recovered by this collector can be guided to a refrigerant liquid reservoir (not shown) to prevent mixing with the absorbing solution. Also in FIG. 4, the evaporator part may be replaced by a regenerator, and the absorber part may be replaced by a condenser. In this case, the liquid spraying device 5A is unnecessary in the condenser section.
【００１３】再生器用伝熱管ユニットでは、伝熱管内に
加熱用流体（蒸気温水等）が流れ、伝熱管外部では吸収
溶液が流下し、流下途中で吸収溶液から冷媒蒸気を発生
させる。凝縮器用伝熱管ユニットでは、伝熱管内に冷却
水が流れ、伝熱管外部では再生器からの冷媒蒸気が凝縮
し、この凝縮した冷媒液が流下する。図５は、図４にお
ける冷水、冷却水のヘッダー構造を示す概略構成図であ
る。図５では、一方の管板に取り付けられた冷水ヘッダ
ーと冷却水ヘッダーの構造が図示してある。図５におい
て、冷水は、入口８からヘッダー１０に流入し、分岐路
８Ｅから蒸発器用伝熱管ユニット４Ｅ内を経由して、他
端の管板に設けられたヘッダー（図示せず）から流出す
る。In the heat exchanger tube unit for the regenerator, a heating fluid (such as steam hot water) flows in the heat exchanger tube, the absorbing solution flows down outside the heat exchanger tube, and refrigerant vapor is generated from the absorbing solution in the middle of the flowing down. In the heat transfer tube unit for the condenser, the cooling water flows inside the heat transfer tube, the refrigerant vapor from the regenerator is condensed outside the heat transfer tube, and the condensed refrigerant liquid flows down. FIG. 5 is a schematic configuration diagram showing the cold water and the header structure of the cooling water in FIG. In FIG. 5, the structure of the cold water header attached to one tube sheet and the cooling water header is illustrated. In FIG. 5, cold water flows into the header 10 through the inlet 8, passes through the branch passage 8E through the evaporator heat transfer tube unit 4E, and flows out through the header (not shown) provided on the tube plate at the other end. .
【００１４】また、冷却水は、入口９からヘッダー１１
に流入し、分岐路９Ａから吸収器用伝熱管ユニット４Ａ
内を経由して他端の管板に設けられたヘッダー（図示せ
ず）から流出する。図５では、冷却水ヘッダーを上に、
冷水ヘッダーを下に配置してあるが、もちろんこの逆で
も良い。更には、ヘッダー１０、１１に仕切り板を設け
ることにより、任意のパス数にも設定できる。前記図示
された例は、単効用吸収冷凍機に限定されることは無
く、多重効用吸収冷凍機や吸収冷温水機にも当然適用可
能である。また、蒸発器、吸収器、再生器、凝縮器を一
体型のシェルに収納することも、双胴型シェルに収納す
ることも可能である。The cooling water is supplied from the inlet 9 to the header 11
To the absorber heat transfer tube unit 4A from the branch passage 9A.
It flows out through a header (not shown) provided on the tube sheet at the other end. In Figure 5, with the cooling water header up,
The cold water header is located below, but of course the reverse is also true. Further, by providing the headers 10 and 11 with partition plates, it is possible to set an arbitrary number of passes. The illustrated example is not limited to a single-effect absorption refrigerator, but can naturally be applied to a multiple-effect absorption refrigerator or absorption cold / hot water machine. Further, the evaporator, the absorber, the regenerator, and the condenser can be housed in an integral shell or in a twin shell shell.
【００１５】[0015]
【発明の効果】本発明によれば、伝熱管を密接すること
により、コンパクト化を実施すると共に、管端部の固定
を容易にし、かつ、通常の円管等を伝熱管として使用す
ることにより強度的に信頼性のある熱交換器とすること
ができた。さらには、伝熱管の密接面において、水平方
向の液流れを促進し、結果として均等な液膜を伝熱面に
形成し、高性能な熱交換器とすることができた。また、
前記本発明の熱交換器を用いて、コンパクトで高性能な
吸収冷凍機を提供することができた。EFFECTS OF THE INVENTION According to the present invention, the heat transfer tubes are brought into close contact with each other, so that the heat transfer tubes can be made compact and the ends of the tubes can be easily fixed, and an ordinary circular tube or the like can be used as the heat transfer tube. It was possible to obtain a heat exchanger that is reliable in terms of strength. Furthermore, the liquid flow in the horizontal direction was promoted on the close surface of the heat transfer tube, and as a result, a uniform liquid film was formed on the heat transfer surface, and a high performance heat exchanger could be obtained. Also,
Using the heat exchanger of the present invention, a compact and high-performance absorption refrigerator can be provided.
【図１】本発明の熱交換器の一例を示す断面構成図の平
面図。FIG. 1 is a plan view of a cross-sectional configuration diagram showing an example of a heat exchanger of the present invention.
【図２】本発明の熱交換器の他の例を示す断面構成図
で、（ａ）は正面図、（ｂ）は側面図、（ｃ）は（ａ）
のＸ−Ｘの断面図、（ｄ）は（ａ）のＹ部拡大図。FIG. 2 is a cross-sectional configuration diagram showing another example of the heat exchanger of the present invention, (a) is a front view, (b) is a side view, and (c) is (a).
3 is a cross-sectional view taken along line X-X of FIG.
【図３】本発明の熱交換器を吸収冷凍機に用いた一例を
示す断面構成図。FIG. 3 is a cross-sectional configuration diagram showing an example in which the heat exchanger of the present invention is used in an absorption refrigerator.
【図４】本発明の熱交換器を吸収冷凍機に用いた他の例
を示す断面構成図。FIG. 4 is a cross-sectional configuration diagram showing another example in which the heat exchanger of the present invention is used in an absorption refrigerator.
【図５】図４における冷水、冷却水のヘッダー構造を示
す概略構成図である。5 is a schematic configuration diagram showing cold water and a header structure of the cooling water in FIG.
１：シェル、２：管板、３：伝熱管、４、４Ａ、４Ｅ：
伝熱管ユニット、５、５Ａ、５Ｅ：液散布装置、６：エ
リミネータ、７：回収器、８：冷水入口、９：冷却水入
口、１０：冷水ヘッダー、１１：冷却水ヘッダー1: Shell, 2: Tube plate, 3: Heat transfer tube, 4, 4A, 4E:
Heat transfer tube unit, 5, 5A, 5E: liquid spraying device, 6: eliminator, 7: collector, 8: cold water inlet, 9: cooling water inlet, 10: cold water header, 11: cooling water header
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ２５Ｂ 39/04 Ｆ２５Ｂ 39/04 Ｑ Ｆ２８Ｆ 13/18 Ｆ２８Ｆ 13/18 Ｂ (72)発明者 石山 健 東京都大田区羽田旭町11番１号 株式会社 荏原製作所内 (72)発明者 松原 利男 東京都大田区羽田旭町11番１号 株式会社 荏原製作所内 (72)発明者 伊藤 理 東京都大田区羽田旭町11番１号 株式会社 荏原製作所内 (72)発明者 森 喜久一 東京都大田区羽田旭町11番１号 株式会社 荏原製作所内 (72)発明者 國政 浩一 東京都大田区羽田旭町11番１号 株式会社 荏原製作所内 (72)発明者 石井 浩 東京都大田区羽田旭町11番１号 株式会社 荏原製作所内 (72)発明者 井本 行央 東京都大田区羽田旭町11番１号 株式会社 荏原製作所内 Ｆターム(参考） 3L093 BB00 MM02 MM05 3L103 AA01 AA05 AA11 AA40 BB33 CC02 CC18 DD08 DD32 DD44 DD61 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) F25B 39/04 F25B 39/04 Q F28F 13/18 F28F 13/18 B (72) Inventor Ken Ishiyama Tokyo 11-11 Haneda Asahi-cho, Ota-ku, Ebara Corporation (72) Inventor Toshio Matsubara 11-11 Haneda-Asahi-cho, Ota-ku, Tokyo (72) Inventor, Osamu Ito Tokyo Asahi Haneda, Ota-ku, Tokyo No. 1 in town Ebara Co., Ltd. (72) Inventor Kikuichi Mori No. 11 Haneda Asahi-cho, Ota-ku, Tokyo Inside Ebara Co., Ltd. (72) Koichi Kunimasa No. 11 Asahi-cho, Ota-ku, Tokyo No. 1 EBARA CORPORATION (72) Inventor Hiroshi Ishii 11-11 Haneda Asahi-cho, Ota-ku, Tokyo No. 1 EBARA CORPORATION (72) Inventor Yukio Imoto 11-Haneda-Hachida, Ota-ku, Tokyo No. 1 F term in EBARA CORPORATION (reference) 3L093 BB00 MM02 MM05 3L103 AA01 AA05 AA11 AA40 BB33 CC02 CC18 DD08 DD32 DD44 DD61
Claims (7)
流れる管外流体との間で熱交換を行う熱交換器におい
て、前記伝熱管が水平方向に配置され、該伝熱管の外面
をほぼ密接するように上下方向に複数積層して伝熱管ユ
ニットとし、該伝熱管ユニットを水平方向に所定間隔で
複数配列すると共に、前記伝熱管両端部が、管板又は管
内流体用のヘッダーと接合され、該伝熱管は、両端部の
形状が円形であり、両端部以外の中間部の形状が上下方
向に長い長円形又は大略長四角形であり、中間部におけ
る上下方向の高さ寸法が両端部の外径より大きいことを
特徴とする熱交換器。1. A heat exchanger for exchanging heat between an in-tube fluid flowing inside a heat transfer tube and an outside fluid flowing outside the heat transfer tube, wherein the heat transfer tubes are arranged in a horizontal direction, and an outer surface of the heat transfer tube is substantially disposed. A plurality of heat transfer tube units are vertically stacked so as to be in close contact with each other, and a plurality of the heat transfer tube units are arranged in the horizontal direction at predetermined intervals, and both ends of the heat transfer tubes are joined to a tube plate or a header for a fluid in the tube. The heat transfer tube has a circular shape at both end portions, and an intermediate portion other than the both end portions has an oval shape or a substantially long quadrangular shape that is long in the vertical direction. A heat exchanger characterized by having a larger outer diameter.
の親水性処理が施されていることを特徴とする請求項１
記載の熱交換器。2. The outer surface of the heat transfer tube is subjected to a hydrophilic treatment for improving wettability.
The heat exchanger described.
再生器又は凝縮器の機器のうち、少なくとも一つに請求
項１又は２記載の熱交換器を用いたことを特徴とする吸
収冷凍機。3. An evaporator, an absorber, which constitutes an absorption refrigerator,
An absorption refrigerator comprising the heat exchanger according to claim 1 or 2 as at least one of a regenerator and a condenser.
換器を凝縮器として用いるか、又は、前記伝熱管ユニッ
トの上部に冷媒の散布装置を設けて蒸発器として用いる
ことを特徴とする吸収冷凍機。4. The absorption refrigerator according to claim 3, wherein the heat exchanger is used as a condenser, or a refrigerant spraying device is provided above the heat transfer tube unit to be used as an evaporator. Absorption refrigerator that does.
換器を、伝熱管ユニットの上部に吸収溶液の散布装置を
設け、吸収器又は再生器として用いることを特徴とする
吸収冷凍機。5. The absorption refrigerator according to claim 3, wherein the heat exchanger is used as an absorber or a regenerator by providing a device for spraying an absorbing solution on an upper part of a heat transfer tube unit. .
換器を、伝熱管ユニットの上部に交互に冷媒散布装置、
吸収溶液散布装置を設け、下部に冷媒又は吸収溶液のい
ずれかを分離回収するための回収器を設けて、交互に蒸
発器、吸収器として用いることを特徴とする吸収冷凍
機。6. The absorption refrigerator according to claim 3, wherein the heat exchangers are alternately arranged on the upper part of the heat transfer tube unit as a refrigerant spraying device.
An absorption refrigerating machine comprising an absorption solution spraying device, a recovery unit for separating and recovering either a refrigerant or an absorption solution provided at a lower part, and alternately used as an evaporator and an absorption unit.
換器を、伝熱管ユニットの上部に一列おきに吸収溶液散
布装置を設け、下部に冷媒又は吸収溶液のいずれかを分
離回収するための回収器を設けて、交互に再生器、凝縮
器として用いることを特徴とする吸収冷凍機。7. The absorption refrigerating machine according to claim 3, wherein the heat exchanger is provided with an absorbing solution spraying device at every other row on the upper part of the heat transfer tube unit, and the refrigerant or the absorbing solution is separated and recovered at the lower part. An absorption chiller characterized by being provided with a recovery device for use as a regenerator and a condenser alternately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002051117A JP2003254680A (en) | 2002-02-27 | 2002-02-27 | Heat exchanger and absorption refrigerating machine using it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002051117A JP2003254680A (en) | 2002-02-27 | 2002-02-27 | Heat exchanger and absorption refrigerating machine using it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003254680A true JP2003254680A (en) | 2003-09-10 |
Family
ID=28663171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002051117A Pending JP2003254680A (en) | 2002-02-27 | 2002-02-27 | Heat exchanger and absorption refrigerating machine using it |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003254680A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100886379B1 (en) | 2006-04-05 | 2009-03-02 | 한양대학교 산학협력단 | Method for selection the optimum number of pass in the multi-pass heat exchanger |
| CN106823423A (en) * | 2017-01-20 | 2017-06-13 | 东华大学 | Semiellipse pipe falling film evaporator |
-
2002
- 2002-02-27 JP JP2002051117A patent/JP2003254680A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100886379B1 (en) | 2006-04-05 | 2009-03-02 | 한양대학교 산학협력단 | Method for selection the optimum number of pass in the multi-pass heat exchanger |
| CN106823423A (en) * | 2017-01-20 | 2017-06-13 | 东华大学 | Semiellipse pipe falling film evaporator |
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