JP4391208B2 - Latent heat recovery heat exchanger - Google Patents

Latent heat recovery heat exchanger Download PDF

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JP4391208B2
JP4391208B2 JP2003381345A JP2003381345A JP4391208B2 JP 4391208 B2 JP4391208 B2 JP 4391208B2 JP 2003381345 A JP2003381345 A JP 2003381345A JP 2003381345 A JP2003381345 A JP 2003381345A JP 4391208 B2 JP4391208 B2 JP 4391208B2
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heat exchange
exchange unit
heat
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spiral
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JP2005147421A (en
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安明 中川
勝之 稲垣
隆治 小澤
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Tosetz Co Ltd
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    • 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
    • F28D7/04—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 spirally coiled

Description

本発明は、潜熱回収熱交換器に関する。   The present invention relates to a latent heat recovery heat exchanger.

潜熱回収熱交換器としては、フイン付熱交換チューブを蛇行させた形状のものとか、多数の熱交換チューブを例えば煙道内に貫設させた構造のもの等が公知である。しかし、上記公知例にあっては、熱交換器が占有するスペースが比較的大きくなることと、効率を確保するためには、煙道等の寸法とか排気温度に合わせた設計が必要になるため、製作コストが高くつくと云った問題がある。そこで、熱交換チューブを渦巻き状に形成した以下に説明する熱交換器の提案がある。   Known latent heat recovery heat exchangers have a configuration in which a finned heat exchange tube is meandered or a structure in which a large number of heat exchange tubes are provided in a flue, for example. However, in the above known example, the space occupied by the heat exchanger becomes relatively large, and in order to ensure efficiency, a design that matches the dimensions of the flue and the exhaust temperature is required. There is a problem that the production cost is high. Therefore, there is a proposal of a heat exchanger described below in which a heat exchange tube is formed in a spiral shape.

特開平９−７２６７９号公報 この発明は、ボイラ等の缶体容積を小さくするために、所定長さの水管の略中央部をＵ字状に折曲し、このＵ字状折曲部を支点として水管を渦巻状に成形した構成である。しかし、この発明にあっては、１本の水管を中央でＵ字状に折り曲げて渦巻き状に形成するため、加工が面倒であり、製作コストが高くつく。また、渦巻状の水管を多層に形成した場合、この水管が重なり合うために効率が悪く、一定の効率を得ようとした場合には熱交換器が大型化してしまうと云う問題がある。In order to reduce the volume of a can such as a boiler, the present invention bends a substantially central portion of a water pipe having a predetermined length into a U shape, and the U-shaped bent portion serves as a fulcrum. The water tube is formed into a spiral shape. However, in the present invention, since one water pipe is bent into a U shape at the center and formed into a spiral shape, the processing is troublesome and the manufacturing cost is high. Further, when spiral water pipes are formed in multiple layers, there is a problem that the water pipes are overlapped, so that the efficiency is low, and if a certain efficiency is to be obtained, the heat exchanger becomes large.

特開平９−１２６６８８号公報 この発明は、直交流型の渦巻板式熱交換器において、清掃装置が少ない部品点数で構成簡易に達成でき、しかも組み込みも容易な渦巻板式熱交換器を得るために、渦巻流路及び軸方向流路を有して、両通路の一方に加熱流体を流入し、他方に被加熱流体を流入する直交流型の渦巻板式熱交換器において、伝熱板の上方で渦巻状の径方向に設置された支持部材と、支持部材を正逆両方向に回転させる回転駆動手段と、支持部材に対し移動自在に吊り下げられて、渦巻状の軸方向流路に垂下される付着物除去用棒状部材とからなる清掃装置１を備えた構成である。しかし、この公知の発明にあっては、渦巻流路は夫々同心円で形成された蛇の目状を呈しており、流体が外から中心方向あるいは中心から外方向に渦巻き状に流れる上記した特許文献１のような所謂渦巻きとはなっていない。また、この発明の渦巻流路は、単層であって、然も流路の断面は偏平な四角形状となっていることから、流路内において、流体の流速分布は均一化せず、効率が悪い。JP, 9-126688, A In this invention, in order to obtain a swirl plate type heat exchanger which can be simply constituted with a small number of parts and can be easily assembled in a cross flow type swirl plate heat exchanger. In a cross-flow type spiral plate heat exchanger having a spiral flow path and an axial flow path, in which a heated fluid flows into one of both passages and a heated fluid flows into the other, a spiral is formed above the heat transfer plate. A support member installed in a radial direction, a rotational drive means for rotating the support member in both forward and reverse directions, and a suspension member that is movably suspended from the support member and suspended in a spiral axial flow path. It is the structure provided with the cleaning apparatus 1 which consists of a stick-shaped member for kimono removal. However, in this known invention, each of the spiral flow paths has a snake-like shape formed by concentric circles, and the fluid flows in a spiral shape from the outside to the center direction or from the center to the outside direction. Such a spiral is not formed. In addition, since the spiral flow path of the present invention is a single layer and the cross section of the flow path is a flat square shape, the flow velocity distribution of the fluid is not uniformed in the flow path, and the efficiency Is bad.

特開平１１−２４８３７７号 この発明は、薄くて、凸凹が設けられ、且つ表面にはフッ素樹脂フィルムがライニング又はラミネートされた長尺の熱交換プレートを使用して、伝熱効率に優れ且つ洩れを生じないスパイラル型プレート式熱交換器に関し、プレートの軸方向開口端縁を封止する円盤状蓋材に所定の間隔に相当する幅の紐状中空ガスケットを配設し、該紐状中空ガスケットの中空部を液圧で直径方向に拡張し、プレートの開口端縁を側面から挟むことによってこれを気密に封止した構成である。しかし、この発明にあっては、熱交換用のチューブがスパイラル状を呈しているが、特殊な用途を持ったプレートであって、潜熱回収用には適用できるものではない。JP, 11-248377, A This invention uses a long heat exchange plate which is thin, provided with irregularities, and has a fluororesin film lined or laminated on its surface, and has excellent heat transfer efficiency and leakage. In connection with a non-spiral plate heat exchanger, a string-shaped hollow gasket having a width corresponding to a predetermined interval is disposed on a disc-shaped lid member that seals the opening edge of the plate in the axial direction, and the string-shaped hollow gasket is hollow. The portion is expanded in the diametrical direction by hydraulic pressure, and the opening edge of the plate is sandwiched from the side surface so as to be hermetically sealed. However, in the present invention, the heat exchanging tube has a spiral shape, but it is a plate having a special purpose and cannot be applied to recovering latent heat.

特開２００３−５１０５４７号公報 この発明は、共通の中心軸線のまわりに延び、渦巻状の実質的に平行な２つの流路を形成する少なくとも２つの渦巻状のシートを有するスパイラル式熱交換器に関し、各流路は、熱交換用の流体を中心軸線に対して実質的に接線方向に流すことができ、各流路は、それぞれの流路の出口又は入口を形成し、それぞれの流路の半径方向外側部に配置された半径方向外側のオリフィスと、それぞれの流路とそれぞれの入口／出口室との間の連通を可能にする半径方向内側のオリフィスとを有し、中心軸線が半径方向内側のオリフィスの入口／出口室を通り、スパイラル式熱交換器は、中心軸線のまわりに延び、流路に対して閉じた中心体を有する構成である。 しかし、この発明にあっては、平行な２つの流路が渦巻状に形成されているが、この流路は、上記特許文献３と同じように、偏平な断面四角形状を呈しており、然も密なる渦巻であって、単層構造であることから、構造が複雑であり、形状が大型化し、製作コストも高くつくと云う問題がある。The present invention relates to a spiral heat exchanger having at least two spiral sheets extending around a common central axis and forming two spiral substantially parallel flow paths. , Each channel can flow heat exchange fluid substantially tangential to the central axis, each channel forming an outlet or inlet of the respective channel, A radially outer orifice disposed at a radially outer portion and a radially inner orifice that allows communication between each flow path and each inlet / outlet chamber, with a central axis in the radial direction Through the inlet / outlet chamber of the inner orifice, the spiral heat exchanger is configured with a central body that extends around the central axis and is closed with respect to the flow path. However, in the present invention, the two parallel flow paths are formed in a spiral shape, but this flow path has a flat cross-sectional quadrangular shape as in Patent Document 3, and However, since it is a dense spiral and has a single-layer structure, there is a problem that the structure is complicated, the shape is enlarged, and the manufacturing cost is high.

本発明の課題は、構造がシンプルで熱交換効率が高く、ユニット化することで設備や条件に合わせて自由に熱交換器の大きさ、性能を選択して設定することができる潜熱回収熱交換器を提供することである。   The problem of the present invention is that the structure is simple, the heat exchange efficiency is high, and by making it a unit, the size and performance of the heat exchanger can be freely selected and set according to the equipment and conditions, and the latent heat recovery heat exchange Is to provide a vessel.

上記課題を解決する最良の形態として、請求項１に記載の発明においては、潜熱回収熱交換器において、ａ．ステンレス又はチタン製熱交換チューブ２と４をそれぞれ同一平面において一定の間隔をあけて円形又は角形の渦巻き状に形成することにより、２ヶの熱交換ユニット要素Ａ、Ｂを形成したこと、
ｂ．前記熱交換ユニット要素ＡとＢを並設させると共にこの並設時において熱交換ユニット要素ＡとＢの熱交換チューブ２と４は、渦巻き面に対して直角方向から見たとき熱交換チューブ２と４が互いに重なり合わないようにずらして並設されていること、
ｃ．前記並設した熱交換ユニット要素ＡとＢの間には、十字状に形成したチューブ固定フレーム８、８ａが挿入されていて、このチューブ固定フレーム８、８ａの両端は、熱交換ユニット要素ＡとＢの渦巻きの外周よりも外に形成されたユニット枠７に固定されていると共に熱交換チューブ２、４は、要所において固定バンド９により前記チューブ固定フレーム８、８ａにそれぞれ固定されて一体化していること、
ｄ．前記渦巻き状に形成された熱交換ユニット要素ＡとＢの熱交換チューブ２、４は、その内端において接続管６により連結されていること、
ｅ．前記熱交換ユニット要素Ａ又はＢにおいて、その一方の外周端は流体流入口３に設定され、他方の熱交換ユニット要素の外周端は流体流出口５に設定されていること、
ｆ．上記ａ〜ｅの構成体で一ヶの熱交換ユニット１が形成されていること、
ｇ．前記熱交換ユニット１は、両端を開放したケース１１内に多段に内設されていると共にこのケース１１の両端は排気ダクト１７の一部を構成するようにして排気ダクト１７の中途に接続されていること、
ｈ．前記熱交換ユニット１の熱交換チューブ２、４において、流体流入口３は、前記ケース１１の外に設けた流体入側ヘッダー１２に流入管１３を経由して接続され、流体流出口５は前記ケース１１の外に設けた流体出側ヘッダー１４に流出管１５を経由して接続されていること、を特徴とするものである。 As the best mode for solving the above-mentioned problems, in the invention according to claim 1, in the latent heat recovery heat exchanger, a. Forming the two heat exchange unit elements A and B by forming the heat exchange tubes 2 and 4 made of stainless steel or titanium in a circular or square spiral shape with a certain interval in the same plane, respectively;
b. When the heat exchange unit elements A and B are arranged side by side, the heat exchange tubes 2 and 4 of the heat exchange unit elements A and B are arranged in parallel with the heat exchange tube 2 when viewed from a direction perpendicular to the spiral surface. 4 are arranged side by side so as not to overlap each other,
c. Between the heat exchange unit elements A and B arranged side by side, tube fixing frames 8 and 8a formed in a cross shape are inserted, and both ends of the tube fixing frames 8 and 8a are connected to the heat exchange unit elements A and B, respectively. The heat exchanging tubes 2 and 4 are fixed to the tube fixing frames 8 and 8a by fixing bands 9 at important points and fixed to the unit frame 7 formed outside the outer periphery of the B spiral. That
d. The heat exchange tubes 2 and 4 of the heat exchange unit elements A and B formed in a spiral shape are connected by a connecting pipe 6 at the inner ends thereof,
e. In the heat exchange unit element A or B, one outer peripheral end thereof is set to the fluid inflow port 3, and the other outer end of the heat exchange unit element is set to the fluid outflow port 5,
f. That one heat exchange unit 1 is formed of the components a to e;
g. The heat exchange unit 1 is installed in multiple stages in a case 11 with both ends open, and both ends of the case 11 are connected to the middle of the exhaust duct 17 so as to form part of the exhaust duct 17. Being
h. In the heat exchange tubes 2 and 4 of the heat exchange unit 1, the fluid inlet 3 is connected to the fluid inlet header 12 provided outside the case 11 via the inlet pipe 13, and the fluid outlet 5 is The fluid outlet side header 14 provided outside the case 11 is connected via an outflow pipe 15.

本発明に斯る潜熱回収熱交換器は、一方のユニット要素を構成する熱交換チューブの外周端の流体流入口内に流体入側ヘッダーを介して流入した流体は、熱交換チューブ内を中心方向に渦巻状に流れ、中心でもう一方のユニット要素側の熱交換チューブの中心側に移り、この熱交換チューブ内を外周方向に渦巻状に流れ、流出側ヘッダーに至り、この中心方向と外周方向への渦巻状の流れの間に熱交換チューブの外側を流れる例えば排気から潜熱を回収することができる。このような特徴を有する本発明の効果は次のとおりである。
１．ユニット要素ＡとＢは、互いに渦巻状に形成された熱交換チューブが互いに重なり合わないように並設されているため、例えばダクト内を流れる排気の流れの障害となる部分が少なく、排気に対する圧損が小さい。
２．ユニット要素ＡとＢは、構造がシンプルなため、製作が容易である。
３．熱交換器は、ユニット要素ＡとＢで構成されているだけのため、構造がシンプルで、製作が容易であり、製作コストも安い。
４．熱交換器は、ダクト内にユニットの数を増大して、又は減少させて構成することができるため、用途に応じた製作ができる。 斯Ru latent heat recovery heat exchanger to the present invention, fluid introduced through the fluid inlet side header to the fluid inflow mouth of the outer peripheral edge of the heat exchange tubes which constitute one of the unit element, toward the center of the heat exchange tubes It flows in a spiral shape, moves to the center of the heat exchange tube on the other unit element side at the center, flows in a spiral shape in the heat exchange tube toward the outer periphery, reaches the outflow side header, and extends in the center direction and the outer periphery direction. The latent heat can be recovered from, for example, the exhaust gas flowing outside the heat exchange tube during the spiral flow. The effects of the present invention having such characteristics are as follows.
1. Since the unit elements A and B are arranged in parallel so that the heat exchange tubes formed in a spiral shape do not overlap each other, for example, there are few parts that obstruct the flow of exhaust flowing in the duct, and pressure loss to the exhaust Is small.
2. Since the unit elements A and B have a simple structure, they are easy to manufacture.
3. Since the heat exchanger is composed only of the unit elements A and B, the structure is simple, the manufacturing is easy, and the manufacturing cost is low.
4). Since the heat exchanger can be configured by increasing or decreasing the number of units in the duct, it can be manufactured according to the application.

図１は、本発明に対応する熱交換ユニット１の正面図、図２はＡ−Ａ´線断面図、図３は熱交換器の正面図、図４は本発明に係る熱交換器をダクトに取り付けた状態の説明図である。
符号の１は、熱交換ユニットであって、この熱交換ユニット１は、外周端に流体流入口３を形成し、一定の間隔Ｗをあけて収径する方向に渦巻状に形成された熱交換チューブ２で構成されたユニット要素Ａと、熱交換チューブ４の外周端に流体流出口５を形成し、一定の間隔Ｗ1をあけて収径する方向に渦巻状に形成されたユニット要素Ｂと、前記ユニット要素ＡとＢの熱交換チューブ２、４の渦巻きの中心において接続管６で連結されており、互いの熱交換チューブ２、４は、重ならないように、正面から見た時に間隔Ｗ及びＷ1に夫々が臨んだ構成である。 1 is a front view of a heat exchange unit 1 corresponding to the present invention, FIG. 2 is a cross-sectional view taken along line AA ′, FIG. 3 is a front view of the heat exchanger, and FIG. 4 is a duct through the heat exchanger according to the present invention. It is explanatory drawing of the state attached to.
Reference numeral 1 denotes a heat exchange unit. The heat exchange unit 1 is formed with a fluid inlet 3 at the outer peripheral end, and is formed in a spiral shape in a direction of converging with a certain interval W. A unit element A composed of a tube 2, and a unit element B formed in a spiral shape in a direction in which the fluid outlet 5 is formed at the outer peripheral end of the heat exchange tube 4 and the diameter is reduced with a constant interval W 1. The heat exchange tubes 2 and 4 of the unit elements A and B are connected by a connecting pipe 6 at the center of the spiral, and the heat exchange tubes 2 and 4 are spaced from each other when viewed from the front so as not to overlap each other. And W 1 respectively.

７は、ユニット要素ＡとＢを組み立てている四角形のユニット枠、８、８ａは、このユニット枠７の対向する枠辺の中央を繋ぐように掛け渡されたチューブ固定フレームであって、熱交換チューブ２及び４は、固定バンド９（図４参照）で周回ごとに固定フレーム８、８ａに夫々固定されている。
以上に説明した熱交換ユニット１は、単独で利用することも勿論可能であるが、通常は、ケース内に複数並設した構成の熱交換器として一体化され、ダクト等に取り付けて用いられる。 7 is a rectangular unit frame that assembles the unit elements A and B, and 8 and 8a are tube fixing frames that are spanned to connect the centers of the opposing frame sides of the unit frame 7. The tubes 2 and 4 are fixed to the fixed frames 8 and 8a for each turn by a fixed band 9 (see FIG. 4).
The heat exchange unit 1 described above can of course be used alone, but is usually integrated as a heat exchanger having a configuration in which a plurality of the heat exchange units 1 are juxtaposed in a case and attached to a duct or the like.

図３、図４は、このダクト内にユニットを多数並設した構成の熱交換器を示すもので、熱交換器１０は、両端１０ａを開放した四角形のケース１１内にユニット１を５組並設し、ケース１１の側面と下面に各ユニット１…の流体流入口３に続くニップル３ａ及び流体流出口５に続くニップル５ａを露出させ、このニップル３ａに流体入側ヘッダー１２を流入管１３、ロックナット１３ａで結び、流体出側ヘッダー１４に流出管１５、ロックナット１５ａで結んだ構成である。図中１６は覗きガラス窓、１７は排気ダクトであって、上記熱交換器１０は、この排気ダクト１７間に両端１０ａで夫々接続される。   3 and 4 show a heat exchanger having a configuration in which a large number of units are arranged in the duct. The heat exchanger 10 includes five units 1 arranged in a rectangular case 11 with both ends 10a open. The nipple 3a following the fluid inlet 3 and the nipple 5a following the fluid outlet 5 of each unit 1 are exposed on the side and lower surfaces of the case 11, and the fluid inlet header 12 is connected to the nipple 3a with the inlet pipe 13, It is configured by connecting with a lock nut 13a and connecting to the fluid outlet header 14 with an outflow pipe 15 and a lock nut 15a. In the figure, 16 is a viewing glass window, 17 is an exhaust duct, and the heat exchanger 10 is connected between the exhaust ducts 17 at both ends 10a.

上記実施例においては、排気ダクト１７内を排気が流れることにより、この排気は、熱交換器１０内において、ユニット要素Ａ及びＢの渦巻状の熱交換チューブ２、４間を通過するときに、この熱交換チューブ２、４内を流れる流体に潜熱を与え、流体を加熱する。
上記実施例１において、熱交換ユニット１は、すべてステンレス製であるが、材質としては、耐腐食性、耐熱性、耐衝撃性等の条件を、用途ごとに満足する限りにおいて、例えば銅、チタン等を適宜用いることができる。
熱交換ユニット１の外形は、本実施例１においては四角形のダクト１７用として四角形の渦巻き状に形成されているが、すべて円形としても良い。或いは、特殊な例として、三角形、五角形、六角形等の多角形を呈する形状としても良い。 In the above embodiment, when the exhaust gas flows through the exhaust duct 17, the exhaust gas passes between the spiral heat exchange tubes 2 and 4 of the unit elements A and B in the heat exchanger 10. The fluid flowing through the heat exchange tubes 2 and 4 is given latent heat to heat the fluid.
In the first embodiment, the heat exchange unit 1 is all made of stainless steel. However, as long as the conditions such as corrosion resistance, heat resistance, and impact resistance are satisfied for each application, for example, copper and titanium are used. Etc. can be used as appropriate.
The outer shape of the heat exchange unit 1 is formed in a rectangular spiral shape for the rectangular duct 17 in the first embodiment, but may be all circular. Or as a special example, it is good also as a shape which exhibits polygons, such as a triangle, a pentagon, and a hexagon.

熱交換チューブ２を同一平面内において渦巻状に形成し、２枚のユニット要素ＡとＢを合わせ、中心部において要素ＡとＢの熱交換チューブ２は接続管６で繋がれている。図５はユニット１の正面図、図６は前記ユニット１を多数並べて熱交換器１０としたもので、１８は、流体入側と出側が一体となった流体出入りヘッダーであって、このヘッダー１８を用いた流体の流れは、要素Ａの外周側から流体が入り、中心の接続管６から要素Ｂに移り、この要素Ｂの外周からヘッダー１８内に戻る。 The heat exchange tubes 2 are formed in a spiral shape in the same plane, combined two units elements A and B, heat exchange tubes 2 elements A and B at the center are connected by connecting pipe 6. FIG. 5 is a front view of the unit 1, and FIG. 6 shows a heat exchanger 10 in which a large number of the units 1 are arranged. Reference numeral 18 denotes a fluid inlet / outlet header in which the fluid inlet side and outlet side are integrated. In the flow of fluid using, fluid enters from the outer peripheral side of the element A, moves from the central connecting pipe 6 to the element B, and returns from the outer periphery of the element B into the header 18.

参考例Reference example

本参考例は、図７に示すように、熱交換チューブ２を同一平面内において渦巻状に形成するのではなく、螺旋状に捲くことにより円錐形状に形成し、この円錐形状の要素Ａと同じように螺旋状に捲くことにより逆円錐形状に形成された要素Ｂを接続管６で接続することにより一対の熱交換ユニット１を構成し、これを例えば煙道ａ内に組み込むものである。
この形状の熱交換ユニット１の組み合わせは連続して長手方向に延長させてもよく、煙道ａが小径の場合に、煙道ａ内の圧力を極力抑えながら、伝熱面積を拡大する場合に有効である。また、チューブ２、４内を流れる流体の圧損も小さくなり、性能向上に有効である。 In this reference example , as shown in FIG. 7, the heat exchange tube 2 is not formed in a spiral shape in the same plane, but is formed in a conical shape by rolling in a spiral shape, and is the same as this conical element A. In this way, a pair of heat exchange units 1 is formed by connecting the elements B formed in an inverted conical shape with a connecting pipe 6 by rolling in a spiral manner, and this is incorporated into a flue a, for example.
The combination of the heat exchange units 1 of this shape may be continuously extended in the longitudinal direction. When the flue a has a small diameter, the heat transfer area is expanded while suppressing the pressure in the flue a as much as possible. It is valid. Further, the pressure loss of the fluid flowing in the tubes 2 and 4 is reduced, which is effective for improving the performance.

本発明に係る潜熱回収熱交換器は、次のような分野において利用することが出来る。
１．各種設備で発生し、廃棄される排気からの潜熱回収熱交換器。
２．各種機器における液と液又は液と気体用の熱交換器。
３．暖房又は冷房用熱交換器。 The latent heat recovery heat exchanger according to the present invention can be used in the following fields.
1. A heat exchanger that recovers latent heat from exhaust that is generated and discarded at various facilities.
2. Heat exchanger for liquid and liquid or liquid and gas in various equipment.
3. Heat exchanger for heating or cooling.

図１は本発明に係る熱交換ユニットの正面図。FIG. 1 is a front view of a heat exchange unit according to the present invention. Ａ−Ａ´線断面図。AA 'line sectional drawing. 本発明に係る熱交換器の正面図。The front view of the heat exchanger which concerns on this invention. 本発明に係る熱交換器を排気ダクト内に取り付けて潜熱回収を行うようにした実施例の説明図。Explanatory drawing of the Example which attached the heat exchanger which concerns on this invention in an exhaust duct, and was made to collect latent heat. 熱交換ユニットの正面図。The front view of a heat exchange unit. 熱交換器の説明図。Explanatory drawing of a heat exchanger. 参考例の熱交換器の説明図。Explanatory drawing of the heat exchanger of a reference example .

１ 熱交換ユニット
２ 熱交換チューブ
３ 流体流入口
４ 熱交換チューブ
５ 流体流出口
６ 接続管
７ ユニット枠
８、８ａ 固定フレーム
９ 固定バンド
１０ 熱交換器
１０ａ 両端
１１ ケース
１２ 流体入側ヘッダー
１３ 流入管
１４ 流体出側ヘッダー
１５ 流出管
１６ 覗きガラス窓
１７ 排気ダクト
１８ 流体出入りヘッダー
ａ 煙道
DESCRIPTION OF SYMBOLS 1 Heat exchange unit 2 Heat exchange tube 3 Fluid inlet 4 Heat exchange tube 5 Fluid outlet 6 Connection pipe 7 Unit frame 8, 8a Fixed frame 9 Fixed band 10 Heat exchanger 10a Both ends 11 Case 12 Fluid inlet side header 13 Inflow pipe 14 Fluid outlet header 15 Outflow pipe 16 Peep glass window 17 Exhaust duct 18 Fluid outlet header a Flue

Claims (1)

ａ．ステンレス又はチタン製熱交換チューブ２と４をそれぞれ同一平面において一定の間隔をあけて円形又は角形の渦巻き状に形成することにより、２ヶの熱交換ユニット要素Ａ、Ｂを形成したこと、a. Forming the two heat exchange unit elements A and B by forming the heat exchange tubes 2 and 4 made of stainless steel or titanium in a circular or square spiral shape with a certain interval in the same plane, respectively;
ｂ．前記熱交換ユニット要素ＡとＢを並設させると共にこの並設時において熱交換ユニット要素ＡとＢの熱交換チューブ２と４は、渦巻き面に対して直角方向から見たとき熱交換チューブ２と４が互いに重なり合わないようにずらして並設されていること、b. When the heat exchange unit elements A and B are arranged side by side, the heat exchange tubes 2 and 4 of the heat exchange unit elements A and B are arranged in parallel with the heat exchange tube 2 when viewed from a direction perpendicular to the spiral surface. 4 are arranged side by side so as not to overlap each other,
ｃ．前記並設した熱交換ユニット要素ＡとＢの間には、十字状に形成したチューブ固定フレーム８、８ａが挿入されていて、このチューブ固定フレーム８、８ａの両端は、熱交換ユニット要素ＡとＢの渦巻きの外周よりも外に形成されたユニット枠７に固定されていると共に熱交換チューブ２、４は、要所において固定バンド９により前記チューブ固定フレーム８、８ａにそれぞれ固定されて一体化していること、c. Between the heat exchange unit elements A and B arranged side by side, tube fixing frames 8 and 8a formed in a cross shape are inserted, and both ends of the tube fixing frames 8 and 8a are connected to the heat exchange unit elements A and B. The heat exchanging tubes 2 and 4 are fixed to the tube fixing frames 8 and 8a by fixing bands 9 at important points and fixed to the unit frame 7 formed outside the outer periphery of the B spiral. That
ｄ．前記渦巻き状に形成された熱交換ユニット要素ＡとＢの熱交換チューブ２、４は、その内端において接続管６により連結されていること、d. The heat exchange tubes 2 and 4 of the heat exchange unit elements A and B formed in a spiral shape are connected by a connecting pipe 6 at the inner ends thereof,
ｅ．前記熱交換ユニット要素Ａ又はＢにおいて、その一方の外周端は流体流入口３に設定され、他方の熱交換ユニット要素の外周端は流体流出口５に設定されていること、e. In the heat exchange unit element A or B, one outer peripheral end thereof is set to the fluid inflow port 3, and the other outer end of the heat exchange unit element is set to the fluid outflow port 5,
ｆ．上記ａ〜ｅの構成体で一ヶの熱交換ユニット１が形成されていること、f. That one heat exchange unit 1 is formed of the components a to e;
ｇ．前記熱交換ユニット１は、両端を開放したケース１１内に多段に内設されていると共にこのケース１１の両端は排気ダクト１７の一部を構成するようにして排気ダクト１７の中途に接続されていること、g. The heat exchange unit 1 is installed in multiple stages in a case 11 with both ends open, and both ends of the case 11 are connected to the middle of the exhaust duct 17 so as to form part of the exhaust duct 17. Being
ｈ．前記熱交換ユニット１の熱交換チューブ２、４において、流体流入口３は、前記ケース１１の外に設けた流体入側ヘッダー１２に流入管１３を経由して接続され、流体流出口５は前記ケース１１の外に設けた流体出側ヘッダー１４に流出管１５を経由して接続されていること、h. In the heat exchange tubes 2 and 4 of the heat exchange unit 1, the fluid inlet 3 is connected to a fluid inlet header 12 provided outside the case 11 via an inlet pipe 13, and the fluid outlet 5 is Connected to the fluid outlet header 14 provided outside the case 11 via the outflow pipe 15;
ｉ．を特徴とする潜熱回収熱交換器。i. A latent heat recovery heat exchanger.
JP2003381345A 2003-11-11 2003-11-11 Latent heat recovery heat exchanger Expired - Lifetime JP4391208B2 (en)

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