JPH11342439A - U-shape metallic pipe and channel cover for multi pipe type heat exchanger using it - Google Patents
U-shape metallic pipe and channel cover for multi pipe type heat exchanger using itInfo
- Publication number
- JPH11342439A JPH11342439A JP14716098A JP14716098A JPH11342439A JP H11342439 A JPH11342439 A JP H11342439A JP 14716098 A JP14716098 A JP 14716098A JP 14716098 A JP14716098 A JP 14716098A JP H11342439 A JPH11342439 A JP H11342439A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- heat exchanger
- metal
- pipe
- channel cover
- 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
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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
-
- 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
- F28D7/08—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 being otherwise bent, e.g. in a serpentine or zig-zag
-
- 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
- F28D7/08—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 being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—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 being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
- F28D7/085—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 being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は特定形状の金属製Ｕ
字管、及びこの金属製Ｕ字管を使用した多管式熱交換器
用チャンネルカバーに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal U
And a channel cover for a multi-tube heat exchanger using the metal U-shaped tube.
【０００２】[0002]
【従来技術】温度差の異なる二つの流体を固体壁を介し
て接しせしめ、両流体間で熱の移動を行わせる装置は熱
交換器として知られている。この熱交換器の一種に多管
式熱交換器がある。従来一般の多管式熱交換器は、先頭
部、胴部、及び後頭部の３部分から成り立っており、先
頭部は流体入り口部と流体出口部とに二分されており、
胴部内には多数の金属管（伝熱管、チューブ）がいわゆ
る管板を利用して管束にして配置されており、また後頭
部には金属管内の流体の向きを変えるための空間が存在
している。先頭部の流体入り口部に入った流体はその部
分に存在するそれぞれの金属管内に流れ込み、管内を移
動して後頭部に至り、この後頭部の空間で流れの向きを
変えて他の金属管内に入り込み、その管内を逆方向に移
動して、先頭部の流体出口部に入り、外部に排出され
る。そして、この胴部内の金属管内を移動中に、金属管
外を流れる流体との間で熱交換が行われる。2. Description of the Related Art A device in which two fluids having different temperature differences are brought into contact via a solid wall and heat is transferred between the two fluids is known as a heat exchanger. One type of this heat exchanger is a multitubular heat exchanger. A conventional general multi-tube heat exchanger is composed of a head portion, a trunk portion, and an occipital region, and the head portion is divided into a fluid inlet portion and a fluid outlet portion,
A large number of metal tubes (heat transfer tubes, tubes) are arranged in a tube bundle in a body using a so-called tube sheet, and a space for changing the direction of the fluid in the metal tubes exists in the back of the head. . The fluid that has entered the fluid inlet at the head flows into each metal tube present at that portion, moves inside the tube to the occiput, changes the direction of flow in this occipital space, and enters other metal tubes, It moves in the opposite direction in the pipe, enters the head fluid outlet, and is discharged to the outside. Then, during movement in the metal tube inside the body, heat exchange is performed with the fluid flowing outside the metal tube.
【０００３】ところで、上記の従来の多管式熱交換器に
おいては、流体は金属管内ではスムースに流れるが、先
頭部や後頭部の空間ではどうしても滞留する傾向があ
り、流体の全てが均一時間熱交換器内に滞留するとは限
らない。食品や医療分野で使用される多管式熱交換器
は、金属管内を流れる処理液体の滞留をきらうため、上
記のような熱交換器は使用できなく、熱交換器の胴部内
に配列させた金属管が連続化した多管式熱交換器が使用
される。In the above-mentioned conventional multi-tube heat exchanger, the fluid flows smoothly in the metal tube, but tends to stay in the space at the head and the back of the head. It does not always stay in the vessel. Multi-tubular heat exchangers used in the food and medical fields do not allow the treatment liquid flowing in the metal tubes to stay, so the above-mentioned heat exchangers cannot be used, and they are arranged in the body of the heat exchanger. A multi-tube heat exchanger with continuous metal tubes is used.
【０００４】このような熱交換器の胴部内に配列させた
金属管が連続化した従来の多管式熱交換器は、図６の断
面図に示すよう、胴部３０及びその両端にヒンジ機構な
どで開閉自在に取り付けた鋳物製のチャンネルカバー３
１、３２からなっている。胴部３１内には多数の金属管
３４が管板３３、３３を使用して配設されている。３５
は邪魔板、３６、３７は金属管内を通す流体の出入り
口、３８、３９は金属管外を通す液体の出入り口であ
る。図７はこの多管式熱交換器の左側端部に取り付ける
鋳物製チャンネルカバー３１を図示したものである。図
７の（ａ）図は、図７の（ｂ）図のＡ−Ａ線断面図であ
る。図７の（ｂ）図は、図７の（ａ）図の右側面図であ
る。図７の（ｃ）図は、図７の（ａ）図の左側面図であ
る。ここで、３１は鋳物製チャンネルカバーである。４
０は鋳鉄部、４１は液体流入通路であり、４２、４３は
液体流通通路（チャンネル）であって、それぞれ鋳物内
に空洞を設けることによって形成されている。３６は液
体流入通路４１に取り付けた液体導入口である。４４は
チャンネルカバー３１の開閉時に利用する把手である。
そして、４５、４６、４７、４８、４９は、熱交換器の
胴部内に配置した金属管３４の端部に合致させるように
設けた流体連絡路である。例えば胴部３０内に配置した
金属管内を流れてきた流体は４６から入り、チャンネル
部４２で向きを変え４７から他の金属管内に流出する。
したがって、この鋳物製チャンネルカバー３１、３２
を、胴部３０内に多数の金属管３４を配置した熱交換器
の両端に取り付けることによって、胴部内に配置した金
属管３４を全て連続させることができる。A conventional multi-tube heat exchanger in which metal tubes arranged in the body of such a heat exchanger are continuous, as shown in a sectional view of FIG. Cast channel cover 3 attached to open and close freely
1, 32. A large number of metal tubes 34 are arranged in the body 31 using tube sheets 33, 33. 35
Is a baffle plate, 36 and 37 are entrances and exits of a fluid passing through the inside of the metal tube, and 38 and 39 are entrances and exits of a liquid passing outside the metal tube. FIG. 7 shows a casting channel cover 31 attached to the left end of the multi-tube heat exchanger. FIG. 7A is a cross-sectional view taken along line AA of FIG. 7B. FIG. 7B is a right side view of FIG. 7A. FIG. 7 (c) is a left side view of FIG. 7 (a). Here, 31 is a casting channel cover. 4
0 is a cast iron part, 41 is a liquid inflow passage, and 42 and 43 are liquid flow passages (channels), each of which is formed by providing a cavity in a casting. Reference numeral 36 denotes a liquid inlet attached to the liquid inflow passage 41. Reference numeral 44 denotes a handle used when the channel cover 31 is opened and closed.
Reference numerals 45, 46, 47, 48, and 49 denote fluid communication paths provided so as to match the ends of the metal tubes 34 disposed in the body of the heat exchanger. For example, the fluid flowing in the metal tube arranged in the body 30 enters at 46, changes its direction at the channel portion 42, and flows out of 47 into another metal tube.
Therefore, the cast channel covers 31, 32
Is attached to both ends of a heat exchanger in which a large number of metal tubes 34 are arranged in the body 30, so that all the metal tubes 34 arranged in the body can be connected.
【０００５】この従来の鋳物製のチャンネルカバーは、
寸法的にも形状的にも精巧なチャンネルを形成させる必
要があり、高度な技術を要し、高価なものになること、
その構造上肉薄の部分と肉厚の部分があり、鋳込むとき
その厚さによって冷却温度が相違するため、所謂「ス」
が出来やすいこと、また熱交換器の胴部の形状や大き
さ、及び胴部内に配置した金属管の太さや配置が変わる
ごとに、鋳型を変える必要があり、コスト高になること
などの問題点がある。[0005] This conventional cast channel cover is
It is necessary to form an elaborate channel both in dimensions and shape, it requires advanced technology, it becomes expensive,
Because of its structure, there are a thin part and a thick part. When casting, the cooling temperature differs depending on the thickness.
And it is necessary to change the mold every time the shape and size of the body of the heat exchanger and the thickness and arrangement of the metal tubes placed inside the body change, resulting in higher costs. There is a point.
【０００６】そこで、上記の問題点の解消のために、こ
の鋳物製のチャンネルカバーに代わる流体反転機構とし
て、この鋳物製チャンネルカバーのチャンネル部をＵ字
管で構成することが考えられるが、断面円形のパイプを
単に曲げ加工してＵ字管を形成させた場合には、Ｕ字管
端面における管と管の間隔を管の外径以下にすることは
困難であった。このように管と管との間隔が大きいと、
胴部内の金属管の配置もそれに合わせて間隔を置いて配
置しなければならないから、胴部内に金属管を密に配置
することができなく、したがって小型で効率の良い多管
式熱交換器が得られない問題点があり、充分に実用性の
ある製品は得られていない。Therefore, in order to solve the above-mentioned problem, as a fluid reversing mechanism replacing the channel cover made of casting, it is conceivable that the channel portion of the channel cover made of casting is constituted by a U-shaped tube. When a circular pipe is simply bent to form a U-shaped pipe, it is difficult to make the interval between the pipes at the end face of the U-shaped pipe smaller than the outer diameter of the pipe. If the distance between the tubes is large,
Since the arrangement of the metal tubes in the body must also be arranged at intervals accordingly, the metal tubes cannot be densely arranged in the body, and therefore a small and efficient multi-tube heat exchanger is required. There is a problem that cannot be obtained, and a sufficiently practical product has not been obtained.
【０００７】[0007]
【発明が解決しようとする課題】本発明は特定の形状を
したＵ字管、すなわちＵ字管の端面部における管と管の
間隔が極めて小さいＵ字管を提供することを目的とし、
更にこの特定形状のＵ字管を用いた多管式熱交換器用の
チャンネルカバーを提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a U-shaped pipe having a specific shape, that is, a U-shaped pipe having a very small distance between the pipes at the end face of the U-shaped pipe.
It is another object of the present invention to provide a channel cover for a multi-tube heat exchanger using the U-shaped tube having the specific shape.
【０００８】[0008]
【課題を解決するための手段】すなわち本発明は、管外
径が２０乃至２００ｍｍの金属製円形管からなるＵ字管
であって、Ｕ字管端面における二つの管の中心間距離が
管外径の１．１〜１．５倍であることを特徴とする金属
製Ｕ字管である。また本発明は、この金属製Ｕ字管をチ
ャンネルカバー板に溶着してなる多管式熱交換器のチャ
ンネルカバーである。That is, the present invention relates to a U-shaped tube made of a metal circular tube having a tube outer diameter of 20 to 200 mm, wherein the distance between the centers of the two tubes at the end face of the U-shaped tube is outside the tube. It is a metal U-shaped tube characterized by having a diameter of 1.1 to 1.5 times. Further, the present invention is a channel cover of a multi-tube heat exchanger obtained by welding this metal U-shaped tube to a channel cover plate.
【０００９】[0009]
【発明の実施の形態】図１は本発明の金属製Ｕ字管の縦
断面図である。１は本発明の金属製Ｕ字管である。２は
断面円形の金属管、３はＵ字管端面である。そして、ｒ
は管の外径であり、本発明の管の外径は２０〜２００ｍ
ｍである。ＤはＵ字管端面３における管と管との間隔で
ある。ｐはＵ字管端面３における二つの管の中心間距
離、すなわち一方の管の中心と他方の管の中心との距離
である（以下、このｐをピッチということがある）。FIG. 1 is a longitudinal sectional view of a metal U-shaped tube according to the present invention. 1 is a metal U-shaped tube of the present invention. Reference numeral 2 denotes a metal tube having a circular cross section, and reference numeral 3 denotes an end surface of a U-shaped tube. And r
Is the outer diameter of the pipe, and the outer diameter of the pipe of the present invention is 20 to 200 m
m. D is the distance between the tubes at the U-tube end face 3. p is the distance between the centers of the two tubes on the U-tube end face 3, that is, the distance between the center of one tube and the center of the other tube (hereinafter, this p may be referred to as pitch).
【００１０】従来、断面円形のパイプを曲げてＵ字管を
作ることは行われているが、曲げ部の曲率を小さくする
と、パイプの断面が変形したり、パイプが破損してしま
い、普通には、管と管との間隔Ｄを管の外径ｒ以下にす
る、すなわちピッチを管外径の２倍以下にすることは難
しかった。しかして、本発明の金属製Ｕ字管は、管の外
径が２０〜２００ｍｍであって、ピッチを管外径の１．
１〜１．５倍にした新規な金属製Ｕ字管である。この管
外径が２０〜２００ｍｍであって、ピッチが管外径の
１．１〜１．５倍である金属製Ｕ字管は、後述するよう
に、多管式熱交換器のチャンネルカバーの液体通路を形
成させるための部品等として有用である。Conventionally, a U-shaped pipe is formed by bending a pipe having a circular cross section. However, if the curvature of the bent portion is reduced, the cross section of the pipe is deformed or the pipe is damaged. However, it was difficult to make the interval D between the tubes less than the outer diameter r of the tubes, that is, to make the pitch less than twice the outer diameter of the tubes. Thus, the metal U-shaped tube of the present invention has an outer diameter of the tube of 20 to 200 mm, and a pitch of 1 to the outer diameter of the tube.
This is a new metal U-tube that is 1 to 1.5 times larger. The metal U-shaped pipe having an outer diameter of the pipe of 20 to 200 mm and a pitch of 1.1 to 1.5 times the outer diameter of the pipe has a channel cover of a multi-tube heat exchanger as described later. It is useful as a part or the like for forming a liquid passage.
【００１１】本発明の金属製Ｕ字管は、例えば次のよう
にして製造する。すなわち、同一径の二本のパイプをそ
れぞれ所定の角度に曲げ、次いでそれぞれの曲げ部を適
宜に切断し、その切断面同士を当接して、この当接部分
を溶着することによって製造できる。そして、このとき
の二本のパイプの曲げ角度と切断個所を適宜に変えるこ
とによって、ピッチを任意に変えることができる。図２
はその一例を示したものである。２本の断面円形の同一
径のパイプ４、５を用意し、そのそれぞれを所定の角度
に曲げ加工する。次いで、この曲げ加工したパイプ４、
５を、所望とするＵ字管のピッチに合わせて、それぞれ
の曲げ部で切断する。そしてその切断面６及び７を当接
して、この当接部分を溶接する。斯くして、図１に示す
如き金属製Ｕ字管が得られる。また、この金属製Ｕ字管
は、ロストワックス鋳造法などの精密鋳造法で製造する
こともできる。The metal U-shaped tube of the present invention is manufactured, for example, as follows. That is, it can be manufactured by bending two pipes having the same diameter to a predetermined angle, then cutting each bent portion appropriately, abutting the cut surfaces, and welding the abutting portion. The pitch can be arbitrarily changed by appropriately changing the bending angle and the cutting position of the two pipes at this time. FIG.
Shows an example. Two pipes 4 and 5 having a circular cross section and the same diameter are prepared, and each of them is bent at a predetermined angle. Next, this bent pipe 4,
5 is cut at each bend in accordance with the desired pitch of the U-tube. Then, the cut surfaces 6 and 7 are brought into contact with each other, and this contact portion is welded. Thus, a metal U-shaped tube as shown in FIG. 1 is obtained. The metal U-shaped tube can also be manufactured by a precision casting method such as a lost wax casting method.
【００１２】次に上記本発明の金属製Ｕ字管を用いた多
管式熱交換器用チャンネルカバーについて説明する。図
３は多管式熱交換器の左端部に取り付けるためのチャン
ネルカバーの一例の断面図であり、図４のＡ−Ａ線断面
図である。図４は図３のチャンネルカバーの右側面図で
ある。また、図４は図３のチャンネルカバーの蓋２４を
外したときの左側面図である。図３、図４において、１
１は本発明のチャンネルカバーである。１２はチャンネ
ルカバー板である。このチャンネルカバー板１２は、多
管式熱交換器において、その胴部内に金属管を配置固定
するのに用いるいわゆる管板と同様な構造を持つもので
あり、このチャンネルカバー板には熱交換器の胴部に配
置された金属管に対応する多数の孔が設けられている。
１３、１４、１５は上述した金属製Ｕ字管である。これ
らの金属製Ｕ字管の端面をチャンネルカバー板１２の孔
に合致させ、溶接等によってチャンネルカバー板１２に
固着させる。１８、１９、２０、２１、２２は、それぞ
れの金属製Ｕ字管の流体連絡路であり、熱交換器の胴内
部に配置した金属管の端部に合致するようになってい
る。なお２３は流体を熱交換器の金属管内に導入するパ
イプに繋がる流体入り口である。この例は多管式熱交換
器の左端部に取り付けるためのチャンネルカバーである
が、その右端部に取り付けるチャンネルカバーも同様の
構造にする。このチャンネルカバーはヒンジ機構などの
よって開閉自在に取り付けるのが好ましく、１６、１７
はこのチャンネルカバーの開閉に利用する把手である。Next, a multi-tube heat exchanger channel cover using the metal U-shaped tube of the present invention will be described. FIG. 3 is a cross-sectional view of an example of a channel cover to be attached to the left end of the multitubular heat exchanger, and is a cross-sectional view taken along line AA of FIG. FIG. 4 is a right side view of the channel cover of FIG. FIG. 4 is a left side view when the cover 24 of the channel cover in FIG. 3 is removed. 3 and 4, 1
1 is a channel cover of the present invention. Reference numeral 12 denotes a channel cover plate. The channel cover plate 12 has the same structure as a so-called tube plate used for arranging and fixing metal tubes in the body of a multi-tube heat exchanger. There are provided a number of holes corresponding to the metal pipes arranged in the body.
Reference numerals 13, 14, and 15 are the above-mentioned metal U-shaped tubes. The end faces of these metal U-shaped tubes are aligned with the holes of the channel cover plate 12 and fixed to the channel cover plate 12 by welding or the like. Numerals 18, 19, 20, 21, and 22 are the fluid communication paths of the respective metal U-shaped tubes, which match the ends of the metal tubes disposed inside the body of the heat exchanger. Reference numeral 23 denotes a fluid inlet connected to a pipe for introducing a fluid into the metal tube of the heat exchanger. In this example, the channel cover is attached to the left end of the multi-tube heat exchanger, but the channel cover attached to the right end has the same structure. This channel cover is preferably mounted to be freely opened and closed by a hinge mechanism or the like.
Is a handle used to open and close the channel cover.
【００１３】例えば胴部内に配置した金属管内を流れて
きた流体は連絡路１９からチャンネルカバー１１に入
り、Ｕ字管１４で向きを変え連絡路２０から他の金属管
内に出ていく。斯くして、このチャンネルカバー１１
を、胴部内に多数の金属管を配置した熱交換器の両端に
取り付け、その一方のチャンネルカバーに流体入り口、
他方のチャンネルカバーに流体出口を設けることによっ
て、胴部内に配置した金属管の全てを連続させ、液体導
入口から液体を連続的に、また熱交換器内で滞留させる
ことなく、流体出口から取り出すことができる。そし
て、本発明では、上記のＵ字管として、ピッチが管外径
の１．１〜１．５倍である金属製Ｕ字管を用いたので、
胴部内に多数本配置する金属管同士の間隔を狭めること
ができ、すなわち胴部内の金属管の配置を密にすること
ができ、したがって小型で効率の良い多管式熱交換器が
得られる。なお、この例では、流体が多管式熱交換器の
一方の端から入り、他方の端からでるようにしたが、こ
の流体入り口と流体出口とを共にどちらか一方の端部に
設けてもよい。また、金属製Ｕ字管の配置の仕方によっ
て金属管内の流路を適宜に変えることができ、また単胴
の中に、複数のパス数を設定する（一連の流路を複数設
定する）こともできる。For example, the fluid flowing through the metal pipe arranged in the body enters the channel cover 11 through the communication path 19, changes its direction by the U-shaped pipe 14, and exits through the communication path 20 into another metal pipe. Thus, the channel cover 11
Is attached to both ends of a heat exchanger in which a number of metal tubes are arranged in the body, and a fluid inlet is provided in one channel cover,
By providing a fluid outlet in the other channel cover, all of the metal tubes arranged in the body are connected, and the liquid is taken out from the fluid outlet continuously and without staying in the heat exchanger from the liquid inlet. be able to. In the present invention, a metal U-shaped pipe having a pitch of 1.1 to 1.5 times the outer diameter of the pipe is used as the U-shaped pipe.
The spacing between a number of metal tubes arranged in the body can be narrowed, that is, the arrangement of the metal tubes in the body can be made denser, so that a small and efficient multi-tube heat exchanger can be obtained. Note that, in this example, the fluid enters from one end of the multitubular heat exchanger and exits from the other end. However, both the fluid inlet and the fluid outlet may be provided at either one end. Good. In addition, the flow path in the metal pipe can be appropriately changed depending on the arrangement of the metal U-shaped pipe, and a plurality of paths are set in a single body (a plurality of series flow paths are set). Can also.
【００１４】上記の図３〜図５の例において、２４はチ
ャンネルカバー板１２に固着させた各金属製Ｕ字管を外
側から保護するための蓋である。この蓋は有っても無く
てもよい。図５は図３のチャンネルカバーの右側面図で
あり、蓋２４を外した状態を示す。また、熱交換器内の
温度と外気温とに差が有る場合には、この蓋内にグラス
ウールなどの断熱材を充填し或は内張りして保温効果を
高めてもよい。また、上記の例においては、金属製Ｕ字
管を孔の開けたチャンネルカバー板に溶着で取り付け固
着したが、胴部内に配置した金属管に直接Ｕ字管を溶着
などで固着してもよい。In the examples shown in FIGS. 3 to 5, reference numeral 24 denotes a cover for protecting each metal U-shaped tube fixed to the channel cover plate 12 from the outside. This lid may or may not be present. FIG. 5 is a right side view of the channel cover of FIG. 3, showing a state where the lid 24 is removed. If there is a difference between the temperature inside the heat exchanger and the outside air temperature, a heat insulating material such as glass wool may be filled or lined in the lid to enhance the heat retaining effect. Further, in the above-described example, the metal U-shaped tube is fixed to the channel cover plate having the holes by welding, but may be fixed directly to the metal tube arranged in the body by welding. .
【００１５】[0015]
【発明の効果】従来の鋳物製の多管式熱交換器用チャン
ネルカバーは金型を用いた鋳造によって形成させている
ため、熱交換器の胴部の形状、大きさ、更には胴部内の
金属管（チューブ）太さ、配列状態によって、金型を代
えなければならない不便があり、また精密な鋳造技術が
要求され高価なものであったが、本発明では、この従来
の鋳物製のチャンネルカバーの流体反転機構と同程度の
曲度をもつＵ字管、すなわちピッチが管外径の１．１〜
１．５倍である新規なＵ字管を製作し、このＵ字管を熱
交換器の管板に相当するチャネルカバー板に固着して構
成できるので、市場で要求する多種多様な多管式熱交換
器に簡単且つ安価に対応できる。また、単胴の中に複数
のパス数を設定することも可能となり、熱交換器の使用
用途及び機能を増強することができる。The channel cover for a conventional multi-tube heat exchanger made of a casting is formed by casting using a mold, so that the shape and size of the body of the heat exchanger and the metal inside the body are further improved. The inconvenience of having to change the mold depending on the thickness of the tube (tube) and the arrangement thereof, and the need for precise casting technology, which is expensive, has been eliminated by the present invention. U-shaped pipe having the same degree of curvature as the fluid reversing mechanism of the above, that is, the pitch is 1.1 to
A new U-tube that is 1.5 times larger can be manufactured and this U-tube can be fixed to the channel cover plate corresponding to the tube plate of the heat exchanger. Easy and inexpensive for heat exchangers. In addition, it is possible to set a plurality of passes in a single cylinder, and it is possible to enhance the usage and functions of the heat exchanger.
【図１】本発明の金属製Ｕ字管の縦断面図FIG. 1 is a longitudinal sectional view of a metal U-tube according to the present invention.
【図２】本発明の金属製Ｕ字管の製造過程を示す縦断面
図FIG. 2 is a longitudinal sectional view showing a manufacturing process of the metal U-shaped tube of the present invention.
【図３】本発明の多管式熱交換器用チャンネルカバーの
断面図FIG. 3 is a sectional view of a multi-tube heat exchanger channel cover of the present invention.
【図４】図３の右側面図FIG. 4 is a right side view of FIG.
【図５】図３の左側面図FIG. 5 is a left side view of FIG. 3;
【図６】従来の多管式熱交換器の断面図FIG. 6 is a cross-sectional view of a conventional multi-tube heat exchanger.
【図７】従来の多管式熱交換器用チャンネルカバーの断
面図、及び左右側面図FIG. 7 is a cross-sectional view and a left and right side view of a conventional multi-pipe heat exchanger channel cover.
１ Ｕ字管、２ 金属管、３ Ｕ字管端面、１１，３
１，３２ 多管式熱交換器用チャンネルカバー、１２
チャンネルカバー板、１３，１４，１５ 金属製Ｕ字
管、１６，１７把手、２４ 蓋1 U-shaped pipe, 2 metal pipe, 3 U-shaped pipe end face, 11,3
1,32 Channel cover for multi-tube heat exchanger, 12
Channel cover plate, 13, 14, 15 Metal U-tube, 16, 17 handle, 24 lid
Claims (3)
からなるＵ字管であって、Ｕ字管端面における二つの管
の中心間距離が管外径の１．１〜１．５倍であることを
特徴とする金属製Ｕ字管。1. A U-shaped pipe made of a metal circular pipe having an outer diameter of 20 to 200 mm, wherein a distance between centers of two pipes at an end surface of the U-shaped pipe is 1.1 to 1.5 of an outer diameter of the pipe. A metal U-tube characterized by being doubled.
ルカバー板に固着してなる多管式熱交換器のチャンネル
カバー。2. A channel cover for a multi-tube heat exchanger, wherein the metal U-shaped tube according to claim 1 is fixed to a channel cover plate.
被せ、該Ｕ字管と該蓋の間に断熱材を介在させたことを
特徴とする請求項２記載の多管式熱交換器のチャンネル
カバー。3. The multi-piece according to claim 2, wherein a lid for covering the U-shaped tube is placed outside the metal U-shaped tube, and a heat insulating material is interposed between the U-shaped tube and the lid. Channel heat exchanger channel cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14716098A JP3374345B2 (en) | 1998-05-28 | 1998-05-28 | Channel cover for multi-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14716098A JP3374345B2 (en) | 1998-05-28 | 1998-05-28 | Channel cover for multi-tube heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11342439A true JPH11342439A (en) | 1999-12-14 |
| JP3374345B2 JP3374345B2 (en) | 2003-02-04 |
Family
ID=15423955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14716098A Expired - Fee Related JP3374345B2 (en) | 1998-05-28 | 1998-05-28 | Channel cover for multi-tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3374345B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009068805A (en) * | 2007-09-14 | 2009-04-02 | T Rad Co Ltd | Method of manufacturing heat exchanger |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929808B (en) * | 2010-05-30 | 2012-05-23 | 大连海新工程技术有限公司 | Box-type multi-tube pass heat exchanger |
-
1998
- 1998-05-28 JP JP14716098A patent/JP3374345B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009068805A (en) * | 2007-09-14 | 2009-04-02 | T Rad Co Ltd | Method of manufacturing heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3374345B2 (en) | 2003-02-04 |
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