JP5730059B2 - Heat exchanger and heating device using the heat exchanger - Google Patents

Heat exchanger and heating device using the heat exchanger Download PDF

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JP5730059B2
JP5730059B2 JP2011032374A JP2011032374A JP5730059B2 JP 5730059 B2 JP5730059 B2 JP 5730059B2 JP 2011032374 A JP2011032374 A JP 2011032374A JP 2011032374 A JP2011032374 A JP 2011032374A JP 5730059 B2 JP5730059 B2 JP 5730059B2
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heat exchanger
collector
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JP2011191049A (en
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一郎 谷口
一郎 谷口
中村 満
満 中村
治 内野
治 内野
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タニコー株式会社
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Description

本発明は、熱交換器及び熱交換器を用いた加熱装置に関し、特に、熱交換管の内側に、集熱フィンを備えた管状の集熱体を設置し、集熱体内の流体と熱交換管の外側の流体との熱交換を行う熱交換器及び当該熱交換器を用いた加熱装置に関する。   The present invention relates to a heat exchanger and a heating device using the heat exchanger, and in particular, a tubular heat collector having heat collection fins is installed inside a heat exchange tube, and exchanges heat with fluid in the heat collector. The present invention relates to a heat exchanger that performs heat exchange with a fluid outside a pipe, and a heating device that uses the heat exchanger.

従来から管状体の内側に流体を流し、管状体の外側の流体との熱交換を行う熱交換器が知られている。そして、熱交換の効率を向上させるために、管状体の内壁に集熱フィンを固着することも行われている。   2. Description of the Related Art Conventionally, a heat exchanger is known in which a fluid is allowed to flow inside a tubular body and heat exchange with a fluid outside the tubular body is performed. And in order to improve the efficiency of heat exchange, fixing a heat collection fin to the inner wall of a tubular body is also performed.

そして、このような熱交換器として、例えば、図10及び図11に示すように、平板状のプレート90を曲折して、左右に略垂直な側面壁を有する筒状に形成されると共に、側面壁内面にその長手方向に沿ってコの字型或いはL字型の銅製のフィン91が溶接固着され、プレート90の端部同士を溶接して筒状に形成されている熱交換器9が提案されている(例えば、特許文献1参照。)。   As such a heat exchanger, for example, as shown in FIGS. 10 and 11, a flat plate 90 is bent and formed into a cylindrical shape having side walls substantially perpendicular to the left and right sides. A heat exchanger 9 is proposed in which a U-shaped or L-shaped copper fin 91 is fixedly welded to the inner surface of the wall along the longitudinal direction, and the ends of the plate 90 are welded to each other to form a cylindrical shape. (For example, refer to Patent Document 1).

又、上記特許文献1においては、上記熱交換器を用いた液体加熱装置が提案されている。そして、この液体加熱装置では、上記熱交換器は、液体加熱装置の液槽の側壁に直接溶接されて液槽内に設置され、筒状の熱交換器内を流れる燃焼ガスの熱を、液槽内の熱交換器の外側に存する液体に伝達し、液槽内の液体を加熱している。   Moreover, in the said patent document 1, the liquid heating apparatus using the said heat exchanger is proposed. In this liquid heating apparatus, the heat exchanger is directly welded to the side wall of the liquid tank of the liquid heating apparatus and installed in the liquid tank, and the heat of the combustion gas flowing in the cylindrical heat exchanger is It transmits to the liquid which exists in the outer side of the heat exchanger in a tank, and heats the liquid in a liquid tank.

特開2000−157425号公報JP 2000-157425 A

しかし、上記特許文献1に開示された熱交換器は、筒状体に集熱用のフィンが溶接により固定されているため、繰り返しの使用による、膨張、収縮によりフィンが筒状体から剥離して、熱交換器が破損し易く、熱交換率を低下させるという問題点や、熱交換器の耐用期間が短いという問題点があった。特に、筒状体とフィンの材質が異なり、熱膨張率が異なる場合にこの問題が顕著であり、上記特許文献1に開示されているように、ステンレス製の筒状体と銅製のフィンでは、この問題が顕著であった。   However, in the heat exchanger disclosed in Patent Document 1, since the heat collecting fins are fixed to the cylindrical body by welding, the fins peel from the cylindrical body due to expansion and contraction due to repeated use. Thus, there are problems that the heat exchanger is easily damaged and the heat exchange rate is lowered, and that the lifetime of the heat exchanger is short. In particular, this problem is remarkable when the materials of the cylindrical body and the fin are different, and the thermal expansion coefficients are different. As disclosed in the above-mentioned Patent Document 1, in the stainless steel cylindrical body and the copper fin, This problem was remarkable.

又、フィンが筒状体から剥離した場合、筒状体は液体加熱装置の液槽の側壁に直接溶接されて設置されているので、補修をするためには、溶接部分を溶かして或いは切断して、液体加熱装置の液槽の側壁から熱交換器を取り外す必要があるが、この作業は困難で、時間がかかり、費用も高くなり、メンテナンスが容易ではないという問題点があった。特に銅製のフィンを用いる場合には、重量が重いこともあり更にメンテナンスが困難であった。   In addition, when the fins are peeled off from the cylindrical body, the cylindrical body is directly welded to the side wall of the liquid tank of the liquid heating device. Therefore, in order to repair, the welded portion is melted or cut. Thus, it is necessary to remove the heat exchanger from the side wall of the liquid tank of the liquid heating apparatus, but this operation is difficult, time consuming, expensive, and not easy to maintain. In particular, when copper fins are used, the weight is heavy and maintenance is further difficult.

又、熱交換器の筒状体内を燃焼ガスが通るので、筒状体の内壁やフィンに煤等の汚物が付着し、熱交換率を低下させないためにも、熱交換器内部の清掃等のメンテナンスを行う必要があるが、上記特許文献1に開示された熱交換器は、筒状体に集熱用のフィンが溶接により固定され、しかも、筒状体は液体加熱装置の液槽の側壁に直接溶接されているので、熱交換器内部の清掃等のメンテナンスが容易ではないという問題点があった。   In addition, since combustion gas passes through the cylindrical body of the heat exchanger, dirt such as soot adheres to the inner walls and fins of the cylindrical body, and the heat exchange rate cannot be reduced. Although it is necessary to perform maintenance, in the heat exchanger disclosed in Patent Document 1, the heat collecting fins are fixed to the cylindrical body by welding, and the cylindrical body is a side wall of the liquid tank of the liquid heating device. There is a problem that maintenance such as cleaning inside the heat exchanger is not easy.

又、その熱交換器の製造において、平板体の曲折、フィンの曲折、フィンの平板体への溶接、平板体の溶接を行うため、工程が複雑で、容易に製造することが出来ず、製造コストが高くなるという問題点があった。特に銅製のフィンを用いる場合には、製造コストの問題が顕著であると共に、重量が重いこともあり更に製造が困難であった。   Also, in the manufacture of the heat exchanger, the bending of the flat plate, the bending of the fin, the welding of the fin to the flat plate, and the welding of the flat plate, the process is complicated and cannot be manufactured easily. There was a problem of high costs. In particular, in the case of using copper fins, the problem of the manufacturing cost is remarkable, and the weight is heavy, and the manufacturing is further difficult.

そこで、本発明は、繰り返しの使用による、膨張、収縮の繰り返しによっても、熱交換器が容易に破損することを防止し、熱交換率を低下させることを防止すると共に、熱交換器の耐用期間を長くすることを目的とする。   Therefore, the present invention prevents the heat exchanger from being easily damaged even by repeated expansion and contraction due to repeated use, and prevents the heat exchange rate from being lowered. The purpose is to lengthen.

又、フィンの破損による補修や、内部の清掃等のメンテナンスを容易とすることを目的とする。   Moreover, it aims at facilitating maintenance, such as repair by the damage of a fin, and internal cleaning.

又、熱交換器又は熱交換器を用いた加熱装置の製造を容易とすると共に、製造コストを低廉化することを目的とする。   Another object of the present invention is to facilitate the manufacture of a heat exchanger or a heating device using the heat exchanger and reduce the manufacturing cost.

上記課題を解決するための手段としての本発明は、熱交換器内部の熱を熱交換器外部の被加熱体に伝達する熱交換器であって、両端が開口した筒状の熱交換管と当該熱交換管内部に設置される集熱体を備え、前記集熱体は、筒状部と、当該筒状部と一体成形され、当該筒状部の内壁面から当該筒状部の内方へ延設された集熱フィンを備え、少なくとも、前記集熱体が加熱されて膨張した際に、前記熱交換管と前記集熱体とが、しまりばめの状態になることを特徴とする熱交換器である。   The present invention as a means for solving the above problems is a heat exchanger for transferring the heat inside the heat exchanger to a heated body outside the heat exchanger, and is a cylindrical heat exchange tube having both ends opened, A heat collecting body installed inside the heat exchange tube, the heat collecting body being integrally formed with the tubular portion and the tubular portion, and from the inner wall surface of the tubular portion to the inside of the tubular portion; The heat exchanger tube and the heat collector are in a state of tight fit when at least the heat collector is heated and expanded. It is a heat exchanger.

そして、筒状部と集熱フィンが一体形成されているので、集熱フィンが筒状体から剥離することがなく、熱交換器が破損し難く、熱交換率を低下させることが防止でき、熱交換器の耐用期間を長くすることが出来る。又、熱交換管と集熱体が別体であるので、集熱体は熱交換管に容易に挿脱できるので、熱交換器、それを用いた加熱装置のメンテナンスが容易となる。更に、部品は熱交換管と集熱体の2点で構成でき、部材の曲折や溶接も不要であり、製造工程が簡素で、容易に製造可能であり、製造コストも低廉化できる。   And since the cylindrical portion and the heat collecting fin are integrally formed, the heat collecting fin is not peeled off from the cylindrical body, the heat exchanger is hardly damaged, and the heat exchange rate can be prevented from being lowered, The service life of the heat exchanger can be extended. Moreover, since the heat exchanger tube and the heat collector are separate, the heat collector can be easily inserted into and removed from the heat exchanger tube, so that the maintenance of the heat exchanger and the heating device using the heat exchanger is facilitated. Further, the component can be constituted by two points, that is, a heat exchange tube and a heat collector, and bending and welding of members are unnecessary, the manufacturing process is simple, the manufacturing can be easily performed, and the manufacturing cost can be reduced.

又、上記熱交換器において、前記集熱体の筒状部の外周面には、前記筒状部の長手方向に亘って連続し、前記筒状部の内方へ突出する凹部が形成されていることを特徴とする熱交換器である。   Further, in the heat exchanger, a concave portion is formed on an outer peripheral surface of the cylindrical portion of the heat collector so as to continue in the longitudinal direction of the cylindrical portion and project inward of the cylindrical portion. It is the heat exchanger characterized by having.

このような構成により、筒状部の径、外周形状を変形、縮小することが出来、加熱される前にしまりばめの状態である場合でも、熱交換管への集熱体の挿脱を容易とすることが出来る。又、筒状部が膨張した際に、凹部で膨張を吸収し、膨張方向をコントロール可能で、筒状部の径の伸長、外周の拡張を防止するので、集熱体が熱交換管に密着したまま、膨張が可能であり、又、熱交換管への応力を抑制し、熱交換管の破損、熱交換器の破損を防止することができる   With such a configuration, the diameter and outer peripheral shape of the cylindrical portion can be deformed and reduced, and even when the interference fit state is applied before heating, the heat collector is inserted into and removed from the heat exchange tube. It can be easy. In addition, when the cylindrical part expands, the concave part absorbs the expansion, and the expansion direction can be controlled, preventing the cylindrical part from extending its diameter and expanding the outer periphery, so that the heat collector adheres closely to the heat exchange tube. The expansion is possible, and the stress to the heat exchange pipe can be suppressed to prevent the heat exchange pipe and the heat exchanger from being damaged.

又、上記熱交換器において、前記熱交換管と前記集熱体が加熱される前において、前記熱交換管と前記集熱体とが、しまりばめの状態であることを特徴とする熱交換器である。このような構成により、集熱体から熱交換管への熱交換率を向上させることが出来る。   Further, in the above heat exchanger, the heat exchange tube and the heat collector are in a state of interference fit before the heat exchange tube and the heat collector are heated. It is a vessel. With such a configuration, the heat exchange rate from the heat collector to the heat exchange tube can be improved.

又、上記熱交換器において、前記熱交換管と前記集熱体が加熱される前において、前記熱交換管と前記集熱体とが、ゆるみばめの状態であることを特徴とする熱交換器である。このような構成により、集熱体の熱交換管への挿入設置、抜き出しが容易となり、製造工程が簡素で、容易に製造可能であり、製造コストも低廉化できると共に、メンテナンスが容易となる。   Further, in the heat exchanger, the heat exchange tube and the heat collector are in a loose fit state before the heat exchange tube and the heat collector are heated. It is a vessel. With such a configuration, the heat collector can be easily inserted into and extracted from the heat exchange tube, the manufacturing process is simple, the manufacturing can be easily performed, the manufacturing cost can be reduced, and the maintenance is facilitated.

又、上記熱交換器において、前記集熱体は、前記集熱体の軸に対し平行方向に分割して形成したこと、又は前記集熱体の軸に対し垂直方向に分割して形成したことを特徴とする熱交換器である。このような構成により、集熱体の熱交換管への挿入設置、抜き出しが容易となり、製造工程が簡素で、容易に製造可能であり、製造コストも低廉化できると共に、メンテナンスが容易となる。   In the heat exchanger, the heat collector is formed by being divided in a direction parallel to the axis of the heat collector, or is formed by being divided in a direction perpendicular to the axis of the heat collector. It is a heat exchanger characterized by this. With such a configuration, the heat collector can be easily inserted into and extracted from the heat exchange tube, the manufacturing process is simple, the manufacturing can be easily performed, the manufacturing cost can be reduced, and the maintenance is facilitated.

又、上記熱交換器において、前記集熱体は、同一形状の複数の分割体を組み合わせて形成したことを特徴とする熱交換器である。   In the above heat exchanger, the heat collecting body is formed by combining a plurality of divided bodies having the same shape.

又、上記熱交換器において、前記集熱体は、前記集熱体の軸方向に対して垂直方向の断面視において、少なくとも一部が湾曲した集熱フィンを備えることを特徴とする熱交換器である。   In the above heat exchanger, the heat collector includes a heat collecting fin that is at least partially curved in a cross-sectional view perpendicular to the axial direction of the heat collector. It is.

又、上記熱交換器において、前記集熱体は、アルミニウム合金又は純アルミニウムで形成し、前記熱交換管はステンレスで形成したことを特徴とする熱交換器である。   In the heat exchanger, the heat collector is made of an aluminum alloy or pure aluminum, and the heat exchange tube is made of stainless steel.

又、上記熱交換器において、前記集熱体の表面には、アルマイト加工を施したことを特徴とする熱交換器である。   In the heat exchanger, the surface of the heat collector is anodized.

更に、熱交換器内部の熱を熱交換器外部の被加熱体に伝達する熱交換器の製造方法であって、両端が開口した筒状の熱交換管を成形する一方、筒状部と、当該筒状部の内壁面から当該筒状部の内方へ延設される集熱フィンを備えた集熱体を一体成形し、前記熱交換管内部に前記集熱体を挿入し、しまりばめの状態で設置することを特徴とする熱交換器の製造方法である。   Furthermore, a heat exchanger manufacturing method for transferring heat inside the heat exchanger to a heated object outside the heat exchanger, wherein a cylindrical heat exchange tube having both ends opened is molded, A heat collecting body having a heat collecting fin extending from the inner wall surface of the tubular portion to the inside of the tubular portion is integrally formed, and the heat collecting body is inserted into the heat exchange tube. It is the manufacturing method of the heat exchanger characterized by installing in the state for this.

更に、上記熱交換器を用いた加熱装置であり、又、前記加熱装置は、本体内部の上方に液槽を備え、前記熱交換器が、前記液槽の対向面に亘って設置されている液体加熱装置であることを特徴とする加熱装置である。   Furthermore, it is a heating device using the heat exchanger, and the heating device includes a liquid tank above the inside of the main body, and the heat exchanger is installed across the opposing surface of the liquid tank. A heating apparatus characterized by being a liquid heating apparatus.

又、上記液体加熱装置は、茹麺器やフライヤーとすることが出来る。   Moreover, the said liquid heating apparatus can be a rice noodle device or a fryer.

以上のような本発明によれば、繰り返しの使用による、膨張、収縮の繰り返しによっても、熱交換器が容易に破損することを防止することが可能となり、熱交換率の低下を防止出来ると共に、熱交換器の耐用期間を長くすることが可能となった。   According to the present invention as described above, it is possible to prevent the heat exchanger from being easily damaged even by repeated expansion and contraction due to repeated use, and it is possible to prevent a decrease in the heat exchange rate, It has become possible to extend the service life of the heat exchanger.

又、集熱フィンの破損による補修や、内部の清掃等のメンテナンスを容易とすることが可能となった。   In addition, it is possible to facilitate maintenance such as repair of the heat collection fins due to breakage and internal cleaning.

又、熱交換器の製造を容易とすることが可能となると共に、製造コストを低廉化することが可能となり、更に、熱交換器を用いた加熱装置の製造を容易とすることが可能となると共に、製造コストを低廉化することが可能となった。   In addition, it is possible to facilitate the manufacture of the heat exchanger, reduce the manufacturing cost, and further facilitate the manufacture of the heating device using the heat exchanger. At the same time, manufacturing costs can be reduced.

本発明熱交換器一実施例部分破断斜視図1 is a partially broken perspective view of an embodiment of the heat exchanger of the present invention. 本発明熱交換器の集熱体の実施例断面図Example sectional view of heat collector of heat exchanger of the present invention 本発明熱交換器実施例部分断面図Partial cross-sectional view of the heat exchanger embodiment of the present invention 集熱体を構成する分割体の一実施例断面図Sectional drawing of one Example of the division body which comprises a heat collecting body 集熱体の一実施例斜視図Example of perspective view of heat collector 本発明熱交換器他実施例斜視図The heat exchanger and other embodiments of the present invention perspective view 本発明液体加熱装置一実施例斜視図1 is a perspective view of a liquid heating apparatus according to an embodiment of the present invention. 本発明液体加熱装置一実施例側面図Side view of one embodiment of the liquid heating apparatus of the present invention 本発明液体加熱装置一実施例正面図Front view of an embodiment of the liquid heating apparatus of the present invention 従来の熱交換器を示す正面図Front view showing a conventional heat exchanger 従来の熱交換器を示す断面図Sectional view showing a conventional heat exchanger

以下、本発明の実施の形態を図を参照して説明する。本発明の熱交換器1は、夫々別個に形成された、両端が開口した筒状の熱交換管2と熱交換管2内部に固着されずに設置される集熱体3を備えて構成されている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. A heat exchanger 1 according to the present invention includes a cylindrical heat exchange pipe 2 that is formed separately and is open at both ends, and a heat collector 3 that is installed without being fixed inside the heat exchange pipe 2. ing.

熱交換管2は、図1、図6及び図8に示すように、両端が開口した筒状であり、熱交換管2の軸に対し垂直方向の断面が円形に形成された、外形が円柱状の管体であり、ステンレスを用いて形成されている。熱交換管2は、集熱体3で集められた熱を受け取り、熱交換管2の外側に存する被加熱体に伝達するための部材である。   As shown in FIGS. 1, 6, and 8, the heat exchange tube 2 has a cylindrical shape with both ends opened, and a cross section perpendicular to the axis of the heat exchange tube 2 is formed in a circular shape. It is a columnar tube and is formed using stainless steel. The heat exchange tube 2 is a member for receiving the heat collected by the heat collector 3 and transmitting it to the heated object existing outside the heat exchange tube 2.

熱交換管2の軸方向(長手方向)の長さ、外径、厚みは、特に限定されず、熱交換管2の材質、熱交換管2が用いられる加熱装置等の機器、そこで求められる熱交換性能等に応じて、適宜選択することができるが、例えば材質がJIS SUS304である場合、長さを312mm、外径を76mm、厚みを3mmとすることが出来る。厚みは、1.5〜4mm程度が好ましく、1.5mm以下であると強度的に弱くなり、4mm以上では、熱交換率が低下するからである。   The length, outer diameter, and thickness in the axial direction (longitudinal direction) of the heat exchange tube 2 are not particularly limited, and the material of the heat exchange tube 2, the equipment such as a heating device in which the heat exchange tube 2 is used, and the heat required there Although it can select suitably according to exchange performance etc., for example, when a material is JIS SUS304, length can be 312 mm, an outer diameter can be 76 mm, and thickness can be 3 mm. The thickness is preferably about 1.5 to 4 mm. If the thickness is 1.5 mm or less, the strength is weak. If the thickness is 4 mm or more, the heat exchange rate decreases.

尚、熱交換管2の形状は、軸に対し垂直方向の断面が円形に限定されず、三角形、四角形、その他の多角形としてもよく、その材質は、ステンレスに限定されず、アルミニウムやその合金等の金属を用いることとしてもよい。   The shape of the heat exchange tube 2 is not limited to a circular cross section in the direction perpendicular to the axis, but may be a triangle, a quadrangle, or other polygons. The material is not limited to stainless steel, and aluminum and its alloys It is good also as using metals, such as.

集熱体3は、アルミニウム合金を用いて形成され、図2(a)に示すように、両端が開口した筒状であり、集熱体3の軸に対し、即ち長手方向に対し垂直方向の断面が円形に形成された外形が円柱状の管体である筒状部31と、筒状部31の内壁面312から筒状部31の内方へ延設された集熱フィン32を備えて構成されている。又、集熱フィン32は筒状部31と一体成形されている。そのため、熱膨張による応力が加わっても、集熱フィン32が筒状部31から剥離、離間することがなく、集熱体3、ひいては熱交換器1の破損を防止することが出来る。尚、集熱体3の素材は、アルミニウム合金に限定されず、ステンレスや純アルミニウム等の金属を用いることとしてもよい。   The heat collector 3 is formed using an aluminum alloy, and as shown in FIG. 2A, the heat collector 3 has a cylindrical shape with both ends opened, and is perpendicular to the axis of the heat collector 3, that is, the longitudinal direction. A cylindrical part 31 whose outer shape is circular in cross section is provided, and a heat collecting fin 32 extending from the inner wall surface 312 of the cylindrical part 31 to the inside of the cylindrical part 31. It is configured. The heat collecting fins 32 are formed integrally with the cylindrical portion 31. Therefore, even if stress due to thermal expansion is applied, the heat collecting fins 32 are not peeled off or separated from the cylindrical portion 31, and damage to the heat collecting body 3 and consequently the heat exchanger 1 can be prevented. Note that the material of the heat collector 3 is not limited to an aluminum alloy, and a metal such as stainless steel or pure aluminum may be used.

筒状部31は、筒状部31の内側、或いは加えて後述する凹部41により形成される熱交換管2と集熱体3間の空間5に流される燃焼ガス等の加熱された流体から熱を集めると共に、集熱フィン32で集められた熱を集め、集めた熱を熱交換管2に伝達するための部材であり、熱交換管2に伝達された熱は、熱交換管2の外側に存する水や油等の液体又は気体である被加熱体に伝達される。   The cylindrical portion 31 is heated from a heated fluid such as a combustion gas that flows into the space 5 between the heat exchange pipe 2 and the heat collector 3 formed by the inner side of the cylindrical portion 31 or in addition, a concave portion 41 described later. Is a member for collecting the heat collected by the heat collection fins 32 and transmitting the collected heat to the heat exchange pipe 2. The heat transferred to the heat exchange pipe 2 is outside the heat exchange pipe 2. It is transmitted to a heated object that is a liquid or gas such as water or oil.

そして、筒状部31の軸方向(長手方向)の長さ、外径、厚みは、夫々熱交換管2の長さ以下、内径未満に形成されると共に、集熱体3の材質、集熱体3が用いられる加熱装置等の機器、そこで求められる熱交換性能等に応じて適宜選択することができるが、例えば材質がJIS A6063である場合、長さを、250mm、外径を、72.5mm、厚みを3mmとすることが出来る。厚みは、1.5〜4mm程度が好ましく、1.5mm以下であると強度的に弱くなり、4mm以上では、熱交換率が低下するからである。   The length, outer diameter, and thickness of the cylindrical portion 31 are less than the length of the heat exchange tube 2 and less than the inner diameter, and the material of the heat collector 3 and heat collection Although it can select suitably according to apparatuses, such as a heating apparatus in which the body 3 is used, and the heat exchange performance calculated | required there, for example, when a material is JISA6063, length is 250 mm and an outer diameter is 72. The thickness can be 5 mm and the thickness can be 3 mm. The thickness is preferably about 1.5 to 4 mm. If the thickness is 1.5 mm or less, the strength is weak. If the thickness is 4 mm or more, the heat exchange rate decreases.

集熱体3は、溶接やその他の方法により固着されずに、熱交換管2内に挿入して設置されている。熱交換管2の内形状及び集熱体3の外形状は、熱交換管2内に集熱体3を挿脱可能であって、少なくとも、集熱体3の筒状部31内が加熱され、その結果として集熱体3が膨張した際に、或いは集熱体3及び熱交換管2が膨張した際に、集熱体3の筒状部31の外壁面313が熱交換管2の内壁面26と密接する形状に形成されている。即ち、集熱体3の膨張時に、熱交換管2と集熱体3はしまりばめの状態になるよう形成されている。   The heat collector 3 is inserted and installed in the heat exchange tube 2 without being fixed by welding or other methods. The inner shape of the heat exchanger tube 2 and the outer shape of the heat collector 3 are such that the heat collector 3 can be inserted into and removed from the heat exchanger tube 2, and at least the inside of the cylindrical portion 31 of the heat collector 3 is heated. As a result, when the heat collector 3 expands, or when the heat collector 3 and the heat exchange tube 2 expand, the outer wall surface 313 of the cylindrical portion 31 of the heat collector 3 is inside the heat exchange tube 2. It is formed in a shape that is in close contact with the wall surface 26. That is, when the heat collector 3 is expanded, the heat exchange tube 2 and the heat collector 3 are formed so as to have an interference fit.

上記一例のような材質及び寸法の熱交換管2及び集熱体3を用いて熱交換器1を構成する場合、集熱体3及び熱交換管2が加熱される前において、熱交換管2と集熱体3とがゆるみばめの状態となっている。このような構成とすることで、集熱体3の熱交換管2への挿脱が容易となる。このような場合、集熱体3が熱交換管2から不用意に脱落しないように、集熱体3を熱交換管2に保持するため、クリップ状等のストッパーを熱交換管2に設置してもよい。尚、このように加熱前に熱交換管2と集熱体3とがゆるみばめの状態として構成する場合には、熱交換管2の材質は集熱体3の材質より熱膨張係数が小さい材質で形成する。   When the heat exchanger 1 is configured using the heat exchanger tube 2 and the heat collector 3 having the materials and dimensions as in the above example, the heat exchanger tube 2 is heated before the heat collector 3 and the heat exchanger tube 2 are heated. And the heat collector 3 are loosely fitted. By setting it as such a structure, the insertion / extraction of the heat collecting body 3 to the heat exchange pipe 2 becomes easy. In such a case, a clip-shaped stopper or the like is installed on the heat exchange pipe 2 in order to hold the heat collection body 3 on the heat exchange pipe 2 so that the heat collection body 3 does not accidentally fall off from the heat exchange pipe 2. May be. When the heat exchange tube 2 and the heat collector 3 are configured to be loosely fitted before heating in this way, the material of the heat exchange tube 2 has a smaller coefficient of thermal expansion than the material of the heat collector 3. Made of material.

又、熱交換器1は、集熱体3及び熱交換管2が加熱される前において、熱交換管2と集熱体3とがしまりばめの状態で構成することとしてもよい。この場合の製造方法として、集熱体3及び熱交換管2を夫々別個に成形し、熱交換管2内部に集熱体3を圧入等により挿入し、しまりばめの状態で設置する方法を採用することが出来る。このような構成とすることで、集熱体3が熱交換管2から不用意に抜けてしまうことを防止でき、又、集熱体3の筒状部31の外壁面313が熱交換管2の内壁面26に確実に密接し、熱交換性能を高めることが出来る。   Further, the heat exchanger 1 may be configured in a state in which the heat exchanger tube 2 and the heat collector 3 are fitted together before the heat collector 3 and the heat exchanger tube 2 are heated. As a manufacturing method in this case, the heat collecting body 3 and the heat exchange pipe 2 are separately formed, and the heat collecting body 3 is inserted into the heat exchange pipe 2 by press fitting or the like, and installed in a tight fit state. It can be adopted. By adopting such a configuration, it is possible to prevent the heat collector 3 from being inadvertently removed from the heat exchange tube 2, and the outer wall surface 313 of the cylindrical portion 31 of the heat collector 3 is formed from the heat exchange tube 2. It is possible to improve the heat exchange performance by being in close contact with the inner wall surface.

尚、しまりばめの状態とは、熱交換管2の内壁面26と集熱体3の外壁面313との間に隙間がなく、密接し、熱交換管2の内壁面26と集熱体3の外壁面313が互いに圧力を加えている状態であり、集熱体3が集熱体3の軸に垂直方向への移動が出来ない状態であり、挿入時であればしめしろができる状態をいう。但し、熱交換管2の内形状と集熱体3の外形状が完全な相似形でない場合に生じる隙間が存在してもしまりばめの状態というものとする。又、ゆるみばめの状態とは、熱交換管2の内壁面26と集熱体3の外壁面313との間に隙間があり、密接していない状態であり、集熱体3が集熱体3の軸に垂直方向への移動が出来る状態をいう。   The tight fit state means that there is no gap between the inner wall surface 26 of the heat exchange tube 2 and the outer wall surface 313 of the heat collector 3, and the inner wall surface 26 of the heat exchange tube 2 and the heat collector are in close contact. 3 is a state in which the outer wall surfaces 313 are applying pressure to each other, the heat collector 3 is not movable in the direction perpendicular to the axis of the heat collector 3, and is capable of interference when inserted. Say. However, even if there is a gap that occurs when the inner shape of the heat exchange tube 2 and the outer shape of the heat collector 3 are not completely similar, it is assumed that the state is an interference fit. Further, the loose fit state is a state in which there is a gap between the inner wall surface 26 of the heat exchange tube 2 and the outer wall surface 313 of the heat collector 3 and the heat collector 3 is not in close contact. A state in which the body 3 can move in the direction perpendicular to the axis.

尚、筒状部31の形状は、熱交換管2に挿脱可能であり、少なくとも、集熱体3の筒状部31内が加熱され、その結果として集熱体3及び熱交換管2が膨張した際に、集熱体3の筒状部31の外壁面313が熱交換管2の内壁面26と密接すれば断面が円形に限定されず、熱交換管2の内部形状に適合させて、三角形、四角形、その他の多角形としてもよい。筒状部31の外壁面313の全面が熱交換管2の内壁面26に密接させるため、筒状部31の外形状と熱交換管2の内形状の夫々の断面は相似形とすることが好ましい。   The shape of the cylindrical portion 31 can be inserted into and removed from the heat exchange tube 2, and at least the inside of the cylindrical portion 31 of the heat collector 3 is heated. As a result, the heat collector 3 and the heat exchange tube 2 are If the outer wall surface 313 of the cylindrical portion 31 of the heat collector 3 is in close contact with the inner wall surface 26 of the heat exchanger tube 2 when expanded, the cross section is not limited to a circle, and is adapted to the inner shape of the heat exchanger tube 2. , Triangles, squares, and other polygons. Since the entire surface of the outer wall surface 313 of the cylindrical portion 31 is brought into close contact with the inner wall surface 26 of the heat exchange tube 2, the cross section of each of the outer shape of the cylindrical portion 31 and the inner shape of the heat exchange tube 2 may be similar. preferable.

集熱体3の長さは、熱交換管2の長さ以下に形成するが、熱交換管2の長さ未満に形成し、図6に示すように、熱交換器1の少なくとも燃焼ガス等の加熱された流体が流入する側(図では左手前側)において、熱交換管2の端部から所定の距離をおいて集熱体3を設置することが好ましい。このような構成とすることで、ガスバーナー等の熱発生器具からの集熱体3への直接的な熱の影響を低減させることが出来、集熱体3の変形や劣化を抑制することが出来る。   The length of the heat collector 3 is formed to be equal to or less than the length of the heat exchange pipe 2, but is formed to be less than the length of the heat exchange pipe 2, and as shown in FIG. It is preferable to install the heat collector 3 at a predetermined distance from the end of the heat exchange tube 2 on the side where the heated fluid flows (on the left front side in the figure). By setting it as such a structure, the influence of the direct heat to the heat collection body 3 from heat generating instruments, such as a gas burner, can be reduced, and the deformation | transformation and deterioration of the heat collection body 3 can be suppressed. I can do it.

集熱フィン32は、筒状部31の内側に流される燃焼ガス等の加熱された流体から熱を集め、筒状部31に伝達するための部材である。集熱フィン32は、図1及び図2(a)に示すように、筒状部31の内壁面312に、所定の間隔をおいて、筒状部31の中心方向へ直線的に突設すると共に、筒状部31の長手方向に直線的に連続して複数形成している。集熱フィン32の高さH、即ち、筒状部31と接する基部321から先端部322までの高さHは、筒状部31の内半径以下の適宜高さとすると共に、個々の集熱フィン32で同一とし、筒状部31の長手方向に亘っても同一としている。又、集熱フィン32の厚みWは、基部321の厚みW1より先端部322の厚みW2を薄く形成している。   The heat collection fins 32 are members for collecting heat from a heated fluid such as combustion gas flowing inside the cylindrical portion 31 and transmitting the heat to the cylindrical portion 31. As shown in FIGS. 1 and 2A, the heat collecting fins 32 project linearly from the inner wall surface 312 of the tubular portion 31 toward the center of the tubular portion 31 at a predetermined interval. At the same time, a plurality of linear portions are continuously formed in the longitudinal direction of the cylindrical portion 31. The height H of the heat collecting fins 32, that is, the height H from the base portion 321 in contact with the cylindrical portion 31 to the distal end portion 322 is set to an appropriate height equal to or less than the inner radius of the cylindrical portion 31, and each heat collecting fin 32 is the same, and is the same over the longitudinal direction of the cylindrical portion 31. Further, the thickness W of the heat collecting fin 32 is formed so that the thickness W2 of the tip end portion 322 is thinner than the thickness W1 of the base portion 321.

尚、集熱フィン32は、筒状部31の長手方向に直線的に連続して形成せずに、筒状部31の長手方向に螺旋状に形成すること、断続的に形成すること、或いはこれらの形状を適宜組み合わせて形成することも出来る。   The heat collecting fins 32 are not formed linearly and continuously in the longitudinal direction of the tubular portion 31, but are formed spirally in the longitudinal direction of the tubular portion 31, intermittently formed, or These shapes can be appropriately combined to form.

又、集熱フィン32は、上記形状に限定されず、図2(b)〜(g)に示すように、高さHを異ならせた形状(b)(e)、基部321から先端部322の厚みを同一とした形状(e)、集熱体3の長手方向に対して垂直方向の断面視において、一部又は全部が湾曲した形状(f)、集熱フィン32同士が入り組んだ形状(f)、一枚の集熱フィン32から補助フィン325が突出した形状(d)、集熱フィン32が筒状部31に形成された円筒状の集熱フィン326を支持する形状(d)、集熱体3の長手方向に対して垂直方向の断面視において、少なくとも一部が湾曲し、一部が筒状部31の中心方向へ直線的に延びると共に、湾曲した集熱フィン32の一部は筒状部31の内半径以上の長さとし、湾曲した一部の集熱フィン32の先端部分が他の2個の集熱フィン32間に挿入された形状(g)、或いは、軸に対し垂直方向の断面において屈折した形状(図示せず)、又はこれらを適宜組み合わせた形状等に形成してもよい。集熱フィン32を湾曲又は屈曲させることにより、集熱体3の内側の表面積を大きくすることができ、集熱効率を高めることが出来る。   Further, the heat collecting fins 32 are not limited to the above shape, and as shown in FIGS. 2B to 2G, the shapes (b) and (e) with different heights H, the base 321 to the tip 322. The shape (e) having the same thickness, the shape (f) in which a part or all of the shape is curved in a cross-sectional view perpendicular to the longitudinal direction of the heat collector 3, and the shape in which the heat collection fins 32 are complicated ( f), a shape (d) in which the auxiliary fins 325 protrude from one heat collecting fin 32 (d), a shape (d) in which the heat collecting fin 32 supports the cylindrical heat collecting fin 326 formed on the tubular portion 31, In a cross-sectional view perpendicular to the longitudinal direction of the heat collector 3, at least a portion is curved, a portion extends linearly toward the center of the cylindrical portion 31, and a portion of the curved heat collection fin 32 Is a length equal to or longer than the inner radius of the cylindrical portion 31 and the tip of the curved heat collecting fin 32 The portion is formed in a shape (g) inserted between the other two heat collecting fins 32, a shape refracted in a cross section perpendicular to the axis (not shown), or a combination of these appropriately. May be. By curving or bending the heat collecting fins 32, the inner surface area of the heat collecting body 3 can be increased, and the heat collecting efficiency can be increased.

又、集熱体3は、長手方向に対して垂直方向の断面形状を、長手方向に前後したどこの断面でも同一形状となるよう形成してもよいが、異なる形状となるよう形成してもよい。一具体例として、個々の集熱フィン32の高さH又は長さは、筒状部31の長手方向に亘って同一とするのではなく、図3に示すように、燃焼ガス等の加熱された流体が流入する側(図では左側)の高さH1を低くし、奥側(図では右側)の所定位置に向かって高くするように形成することも出来る。この高さの変化は、直線状や曲線状にすることが出来、又、筒状部31の長手方向一端から他端に亘って高さの変化を設けることとしてもよい。   Further, the heat collector 3 may be formed so that the cross-sectional shape in the direction perpendicular to the longitudinal direction is the same in any cross-section in the longitudinal direction, but may be formed in a different shape. Good. As a specific example, the height H or length of the individual heat collection fins 32 is not the same in the longitudinal direction of the cylindrical portion 31 but is heated by combustion gas or the like as shown in FIG. Alternatively, the height H1 on the side into which the fluid flows (left side in the figure) can be lowered and increased toward a predetermined position on the back side (right side in the figure). This change in height can be linear or curved, and the change in height may be provided from one end to the other end of the cylindrical portion 31 in the longitudinal direction.

このような構成とすることで、通常、燃焼ガス等の加熱された流体が流入する側から奥側、排出する側に向かって、加熱された流体の温度が低くなるが、奥側の集熱フィンの面積を大きくすることで、集熱効果を高め、熱交換器1の全長に亘って均一な熱交換を行うことが出来る。   With such a configuration, the temperature of the heated fluid generally decreases from the side where the heated fluid such as combustion gas flows in to the back side and the side where it discharges. By increasing the area of the fins, the heat collection effect can be enhanced and uniform heat exchange can be performed over the entire length of the heat exchanger 1.

熱交換器1の奥側の集熱フィンの面積を大きくするために、上記構成の他、加熱された流体が流入する側より奥側に多数の集熱フィン32を形成することも出来る。   In order to increase the area of the heat collecting fins on the back side of the heat exchanger 1, in addition to the above configuration, a large number of heat collecting fins 32 can be formed on the back side from the side into which the heated fluid flows.

筒状部31には、図1、図2(b)〜(g)に示すように、筒状部31の長手方向に亘って直線的に連続し、筒状部31の内方へ突出する凹部41を形成することが好ましい。この凹部41により、筒状部31の外周面には所定深さの溝状の窪みが形成されると共に、筒状部31の内周面には所定高さの凸条が形成される。この凹部41は、筒状部31に弾性を付与し、筒状部31の径を短くし、外周を縮ませることが出来る。凹部41の形成数は特に限定されず、1個〜6個程度で充分であるが、筒状部31の外壁面313と熱交換管2の内壁面26との接触面積を大きくするために、出来るだけ少なくすることが好ましく、1個〜4個程度が好ましい。又、凹部41は、筒状部31の膨張及び膨張の吸収のバランスを均一化するために、筒状部31の外周面に等間隔で設けることが好ましい。   As shown in FIGS. 1 and 2B to 2G, the cylindrical portion 31 is linearly continuous over the longitudinal direction of the cylindrical portion 31 and protrudes inward of the cylindrical portion 31. It is preferable to form the recess 41. Due to the recess 41, a groove-like depression having a predetermined depth is formed on the outer peripheral surface of the cylindrical portion 31, and a protrusion having a predetermined height is formed on the inner peripheral surface of the cylindrical portion 31. This recessed part 41 can give elasticity to the cylindrical part 31, shorten the diameter of the cylindrical part 31, and can shrink an outer periphery. The number of recesses 41 formed is not particularly limited, and about 1 to 6 is sufficient, but in order to increase the contact area between the outer wall surface 313 of the tubular portion 31 and the inner wall surface 26 of the heat exchange tube 2, It is preferable to reduce as much as possible, and about 1 to 4 is preferable. The recesses 41 are preferably provided at equal intervals on the outer peripheral surface of the cylindrical part 31 in order to make the balance between expansion and absorption of the cylindrical part 31 uniform.

尚、凹部41は、筒状部31の一部を筒状部31の中心軸方向へ凹ませて形成するが、この凹部41を形成する壁面も集熱フィン32となる。この場合、凹部41を形成する集熱フィン32は、筒状部31の内側に加えて凹部41により形成される熱交換管2と集熱体3間の空間5に流される燃焼ガス等の加熱された流体からも熱を集める。尚、凹部41を形成する外側の壁面は、筒状部31の外壁面313を構成するものではない。   The concave portion 41 is formed by denting a part of the cylindrical portion 31 in the central axis direction of the cylindrical portion 31, and the wall surface forming the concave portion 41 is also the heat collecting fin 32. In this case, the heat collection fins 32 that form the recesses 41 heat the combustion gas or the like that flows in the space 5 between the heat exchange pipe 2 and the heat collector 3 formed by the recesses 41 in addition to the inside of the cylindrical part 31. Heat is also collected from the generated fluid. Note that the outer wall surface forming the recess 41 does not constitute the outer wall surface 313 of the cylindrical portion 31.

凹部41の、筒状部31の軸に対し垂直方向の断面形状は、特に限定されず、図2(b)に示すような筒状部31の外周面を底辺とする三角形状、図2(c)〜(e)に示すような頂角が半円形上の筒状部31の外周面を底辺とする三角形状の他、図示はしないが、半円形状、半楕円円形状、頂角が筒状部31の外周面に接する三角形状、一部が欠けた略円形状、扇形状等適宜の形状とすることが出来る。   The cross-sectional shape of the concave portion 41 in the direction perpendicular to the axis of the cylindrical portion 31 is not particularly limited, and a triangular shape having the outer peripheral surface of the cylindrical portion 31 as shown in FIG. c) to (e), the apex angle is a semi-circular shape with a semicircular cylindrical surface 31 as a base, and a semicircular shape, a semi-elliptical circular shape, and an apex angle, although not shown. An appropriate shape such as a triangular shape in contact with the outer peripheral surface of the cylindrical portion 31, a substantially circular shape with a part missing, or a fan shape can be used.

このような構成により、筒状部31の径、外周形状を変形、縮小することが出来、加熱される前にしまりばめの状態である場合でも、熱交換管2への挿脱時に外周形状を縮小させることで、挿脱を容易とすることが出来る。又、筒状部31が膨張した際に、凹部41で膨張を吸収し、膨張方向をコントロール可能で、筒状部31の径の伸長、外周の拡張を防止するので、集熱体3が熱交換管2に密着したまま、膨張が可能であり、又、熱交換管2への応力を抑制し、熱交換管2の破損、熱交換器1の破損を防止することができる。   With such a configuration, the diameter and outer peripheral shape of the cylindrical portion 31 can be deformed and reduced, and the outer peripheral shape can be removed when inserted into and removed from the heat exchange tube 2 even when it is in a state of interference fit before being heated. By reducing the size, insertion / removal can be facilitated. Further, when the cylindrical portion 31 is expanded, the concave portion 41 absorbs the expansion, and the expansion direction can be controlled, and the cylindrical portion 31 can be prevented from extending its diameter and expanding its outer periphery. The expansion can be performed while being in close contact with the exchange pipe 2, and the stress to the heat exchange pipe 2 can be suppressed, so that the heat exchange pipe 2 and the heat exchanger 1 can be prevented from being damaged.

又、凹部41を形成しない場合は、少なくとも膨張時に筒状部31の外壁面313が熱交換管2の内壁面26と充分に密着する必要があると共に、筒状部31の膨張により、筒状部31又は/及び熱交換管2が破損しない範囲で設計、形成する必要があるので、筒状部31と熱交換管2の材質が異なる場合はもとより、同じ場合であっても、夫々の厚み等構成の違いによる膨張率、膨張方向等が異なる場合があり、場合によっては、筒状部31の外壁面313が熱交換管2の内壁面26と充分に密着しないこともあるので、設計、形成が容易ではない。しかし、凹部41を形成することにより、筒状部31の膨張を吸収し、膨張方向をコントロール可能なので、設計、形成が容易であると共に、筒状部31の外壁面313が熱交換管2の内壁面26に確実に密着させることが出来る。   Further, when the recess 41 is not formed, the outer wall surface 313 of the cylindrical portion 31 needs to be in close contact with the inner wall surface 26 of the heat exchange tube 2 at least during expansion, and the cylindrical portion 31 expands due to the expansion of the cylindrical portion 31. Since it is necessary to design and form the part 31 and / or the heat exchange pipe 2 in such a range that the part is not damaged, the thickness of the cylindrical part 31 and the heat exchange pipe 2 are different from each other, even if they are the same. The expansion rate, expansion direction, and the like due to the difference in the configuration may be different. In some cases, the outer wall surface 313 of the cylindrical portion 31 may not be sufficiently in close contact with the inner wall surface 26 of the heat exchange tube 2. Formation is not easy. However, by forming the recess 41, the expansion of the cylindrical portion 31 can be absorbed and the direction of expansion can be controlled. Therefore, the design and formation are easy, and the outer wall surface 313 of the cylindrical portion 31 is formed on the heat exchange tube 2. The inner wall surface 26 can be securely adhered.

更に、筒状部31の熱交換管2への挿脱が容易であって、常に筒状部31の外壁面313と熱交換管2の内壁面26とを密接させておくことが出来る。   Furthermore, the cylindrical portion 31 can be easily inserted into and removed from the heat exchange tube 2, and the outer wall surface 313 of the cylindrical portion 31 and the inner wall surface 26 of the heat exchange tube 2 can always be kept in close contact with each other.

尚、集熱フィン32が筒状部31の長手方向に螺旋状に連続して形成されている場合、凹部41も筒状部31の長手方向に螺旋状に形成することが、製造が容易であり好ましい。   In addition, when the heat collecting fins 32 are continuously formed in a spiral shape in the longitudinal direction of the tubular portion 31, it is easy to manufacture the recessed portion 41 in a spiral shape in the longitudinal direction of the tubular portion 31. It is preferable.

熱交換管2及び集熱体3は、夫々に用いる材質や形状に適した製造方法により形成すればよく、例えば、熱交換管2は、平板体を湾曲させて両端同士を溶接等により固着して形成したり、押出加工、引抜加工等を用いて形成することが出来、集熱体3は、押出加工、引抜加工、柱状体を用いたワイヤ放電加工やブローチ加工等を用いて形成することが出来る。又、集熱体3の材質がアルミニウム等腐食しやすい材質である場合には、集熱体3の表面、即ち筒状部31の端面を含む外側表面並びに内側表面及び集熱フィン32の表面には、腐食防止のためアルマイト加工を施すこととしてもよい。   The heat exchange tube 2 and the heat collector 3 may be formed by a manufacturing method suitable for the material and shape used respectively. For example, the heat exchange tube 2 is formed by bending a flat plate and fixing both ends thereof by welding or the like. The heat collector 3 can be formed using extrusion, drawing, wire electric discharge machining using a columnar body, broaching, or the like. I can do it. Further, when the material of the heat collector 3 is a material that easily corrodes, such as aluminum, the surface of the heat collector 3, that is, the outer surface including the end face of the cylindrical portion 31, the inner surface, and the surface of the heat collection fin 32 May be anodized to prevent corrosion.

集熱体3は一体成形するが、分割して形成してもよい。分割形成する場合、集熱体3の長手方向、即ち軸に対し垂直方向に分割してもよく、図2(e)、(f)及び(g)に示すように、軸に対し平行方向、即ち集熱体3の長手方向に分割してもよい。分割形成することにより、一体成形では採用が困難な、集熱フィン32を含めた集熱体3の形状、材質、加工法等の組み合わせを容易とし、熱交換率が高い、集熱体3、熱交換器1を容易且つ廉価に製造することが出来る。   The heat collector 3 is integrally formed, but may be formed separately. When divided and formed, the heat collecting body 3 may be divided in the longitudinal direction, that is, in the direction perpendicular to the axis, as shown in FIGS. 2 (e), (f) and (g), in the direction parallel to the axis, In other words, the heat collector 3 may be divided in the longitudinal direction. By forming in a divided manner, it is easy to combine the shape, material, processing method and the like of the heat collecting body 3 including the heat collecting fins 32, which is difficult to adopt by integral molding, and the heat collecting body 3 has a high heat exchange rate. The heat exchanger 1 can be manufactured easily and inexpensively.

そして、特に軸に対し平行方向に分割して形成する場合、集熱体3は、図2(e)に示すように、集熱体3を構成する分割体30の他の分割体30との対向部に係止突起37を設け、分割体30同士を係止させたり、又、図2(f)及び(g)に示すように、分割体30の筒状部31部分の両端部であって、集熱体3を組み立てた際の分割体30同士の対向部に係合突起38と係合凹部39を設け、集熱体3の長手方向にスライドさせて係合凹部39に係合突起38を挿入させて分割体30同士を係合させて集熱体3を形成することが好ましい。このような構成とすることで、集熱体3の組立時に分割体30のずれ、集熱体3の分解を防止できるからであり、特に係合させることにより、その効果が高まるからである。又、分割数は特に限定されないが、多すぎると、組立て、熱交換管2への挿脱の作業が煩雑になる場合もあるので、特に軸に対し平行方向に分割する場合には、2〜4分割程度が好ましく、特に2又は3分割が好ましい。   And when dividing | segmenting and forming especially in the direction parallel to an axis | shaft, as shown to FIG.2 (e), the heat collecting body 3 is the other divided bodies 30 with the divided body 30 which comprises the heat collecting body 3. Locking protrusions 37 are provided at the opposing portions to lock the divided bodies 30 together, or as shown in FIGS. 2 (f) and 2 (g), at both ends of the cylindrical portion 31 portion of the divided body 30. Then, an engagement protrusion 38 and an engagement recess 39 are provided in the facing portion between the divided bodies 30 when the heat collector 3 is assembled, and the engagement protrusion 39 is slid in the longitudinal direction of the heat collector 3. It is preferable to form the heat collecting body 3 by inserting 38 and engaging the divided bodies 30 with each other. This is because such a configuration can prevent the divided body 30 from being displaced and the heat collecting body 3 from being disassembled when the heat collecting body 3 is assembled, and the effect is enhanced by engaging the heat collecting body 3 in particular. In addition, the number of divisions is not particularly limited, but if it is too large, the assembly and insertion / removal operations to and from the heat exchange tube 2 may become complicated. About 4 divisions are preferable, and 2 or 3 divisions are particularly preferable.

複数の分割体30を組み合わせて集熱体3を形成する場合、夫々の分割体30に形成される集熱フィン32の形状、成形位置を異ならせ、分割体30の形状を異なる形状としてもよいが、夫々の分割体30は同一形状とすることが好ましい。同一形状とすることで、夫々の分割体30の相対的位置関係に注意して組み立てをする必要がなく、集熱体3の組立が容易となり、又、分割体30及び集熱体3の製造も容易且つ低廉化することが出来るからである。例えば、図2(g)に示す集熱体300を3個の分割体30で形成する場合、図4に示す断面形状の分割体301を3個組み合わせて組立形成することが出来、組み立てられた集熱体3の一形態として図5に示す集熱体300が形成される。更に、この集熱体300を用いた熱交換器の一実施例として、図6に示す熱交換器1が形成される。   When the heat collecting body 3 is formed by combining a plurality of divided bodies 30, the shapes of the heat collecting fins 32 formed on the respective divided bodies 30 and the molding positions may be different, and the shapes of the divided bodies 30 may be different shapes. However, it is preferable that the respective divided bodies 30 have the same shape. By having the same shape, it is not necessary to assemble with attention to the relative positional relationship between the respective divided bodies 30, the assembly of the heat collector 3 is facilitated, and the division body 30 and the heat collector 3 are manufactured. This is because it can be easily and inexpensively. For example, when the heat collecting body 300 shown in FIG. 2 (g) is formed by three divided bodies 30, three divided bodies 301 having a cross-sectional shape shown in FIG. 4 can be assembled and assembled. A heat collector 300 shown in FIG. 5 is formed as one form of the heat collector 3. Furthermore, the heat exchanger 1 shown in FIG. 6 is formed as an embodiment of a heat exchanger using the heat collector 300.

上記のような熱交換器1は、熱交換を必要とする加熱装置等の各種機器に利用することが出来、加熱装置の一例として、油を加熱するフライヤーや水を加熱する茹麺器等の液体加熱装置が挙げられる。以下、熱交換器1を加熱装置に用いる実施の形態を茹麺器を例として説明する。   The heat exchanger 1 as described above can be used for various devices such as a heating device that requires heat exchange, and examples of the heating device include a fryer that heats oil and a rice noodle device that heats water. A liquid heating apparatus is mentioned. Hereinafter, an embodiment in which the heat exchanger 1 is used as a heating device will be described using a rice noodle device as an example.

茹麺器10は、図7〜図9に示すように、厨房等の床面に設置するための脚部61を備えた本体6内部の上方に、麺を茹でる水を貯留するための液槽62を備え、本体6内部であって液槽62の前面621側(図8において左側)には、液槽62の外壁面と接し、その内部に熱発生器具たるガスバーナー63が設置された燃焼室64が設けられている。詳しくは、燃焼室64は、上下開口の箱体88を上部開口部を液槽62の外壁面に密接させ、液槽62の外壁面の一部をその上部壁として構成されている。又、液槽62の背面622側(図8において右側)には、排気路65が設けられている。そして、液槽62内部には、所定数の熱交換器1が、一端を燃焼室64、他端を排気路65に接続され、液槽62の対向面、即ち前面621から背面622に亘って略水平状態で設置されている。このようにして、燃焼室64から熱交換器1、そして排気路65へと通じる流路69が形成されている。   As shown in FIG. 7 to FIG. 9, the bowl noodle device 10 is a liquid tank for storing water for boiling noodles above the inside of the main body 6 having legs 61 for installation on the floor surface of a kitchen or the like. Combustion in which a gas burner 63 as a heat generating device is installed inside the main body 6 on the front surface 621 side (left side in FIG. 8) of the liquid tank 62 in contact with the outer wall surface of the liquid tank 62. A chamber 64 is provided. Specifically, the combustion chamber 64 is configured such that a box body 88 having an upper and lower opening is in close contact with an upper wall surface of the liquid tank 62 and a part of the outer wall surface of the liquid tank 62 is an upper wall. An exhaust path 65 is provided on the back surface 622 side (right side in FIG. 8) of the liquid tank 62. In the liquid tank 62, a predetermined number of heat exchangers 1 are connected at one end to the combustion chamber 64 and at the other end to the exhaust path 65, and extend from the opposite surface of the liquid tank 62, that is, from the front surface 621 to the back surface 622. It is installed almost horizontally. In this way, a flow path 69 that leads from the combustion chamber 64 to the heat exchanger 1 and the exhaust path 65 is formed.

尚、熱交換器1の設置は、液槽62の前面621及び背面622夫々に設けられた孔66に熱交換器1の熱交換管2の端部を溶接して行うが、集熱体3は予め熱交換管2内に設置しておいてもよく、熱交換管2の液槽62への固定後に熱交換管2に挿入することとしてもよい。   The heat exchanger 1 is installed by welding the end of the heat exchange pipe 2 of the heat exchanger 1 to the holes 66 provided in the front surface 621 and the back surface 622 of the liquid tank 62, respectively. May be installed in the heat exchange pipe 2 in advance, or may be inserted into the heat exchange pipe 2 after the heat exchange pipe 2 is fixed to the liquid tank 62.

次に茹麺器10の作動について説明する。液槽62に水7を熱交換器1より高い水位まで貯留後、ガスバーナー63を点火して、燃焼室64内で高温の燃焼ガスを発生させる。この燃焼ガスの流れは、図8において矢印Rで示すように、上昇し、熱交換器1の内部に進入し、集熱体3の内部、即ち筒状部31の内側、或いは加えて凹部41により形成される熱交換管2と集熱体3間の空間5に進入して、筒状部31と集熱フィン32と接触する。そして、燃焼ガスの熱が筒状部31及び集熱フィン32に吸収され、集熱フィン32で集められた熱は、筒状部31に伝達され、更に熱交換管2に伝達される。熱交換管2に伝達された熱は、液槽62内の水7と接する熱交換管2の外面に達し、液槽62内の水7との熱交換を行い、即ち水7を加熱する。熱交換器1の内部で熱を奪われた燃焼ガスは、排気路65を通り本体6の外部へ排出される。   Next, the operation of the rice noodle device 10 will be described. After storing the water 7 in the liquid tank 62 to a level higher than that of the heat exchanger 1, the gas burner 63 is ignited to generate high-temperature combustion gas in the combustion chamber 64. The flow of the combustion gas ascends as shown by an arrow R in FIG. 8 and enters the heat exchanger 1, and enters the inside of the heat collector 3, that is, the inside of the cylindrical portion 31, or in addition, the concave portion 41. It enters the space 5 between the heat exchange tube 2 and the heat collector 3 formed by the above, and comes into contact with the tubular portion 31 and the heat collection fins 32. The heat of the combustion gas is absorbed by the cylindrical portion 31 and the heat collecting fins 32, and the heat collected by the heat collecting fins 32 is transmitted to the cylindrical portion 31 and further transmitted to the heat exchange pipe 2. The heat transferred to the heat exchange pipe 2 reaches the outer surface of the heat exchange pipe 2 in contact with the water 7 in the liquid tank 62 and exchanges heat with the water 7 in the liquid tank 62, that is, heats the water 7. The combustion gas deprived of heat inside the heat exchanger 1 is discharged to the outside of the main body 6 through the exhaust passage 65.

そして、熱交換器1のメンテナンスのために、集熱体3を熱交換管2から抜く時、メンテナンス終了時に集熱体3を熱交換管2に挿入する際には、燃焼室64を構成する着脱或いは開閉自在な箱体88及び本体6の前面に着脱或いは開閉自在に設けられた前蓋81を取除き或いは開けて行うことが出来る。   When the heat collector 3 is removed from the heat exchange pipe 2 for maintenance of the heat exchanger 1 or when the heat collector 3 is inserted into the heat exchange pipe 2 at the end of the maintenance, the combustion chamber 64 is configured. This can be done by removing or opening the box 88 which can be attached or detached or opened and closed and the front lid 81 which is provided on the front surface of the main body 6 so as to be attached or detached.

集熱フィン32が図2(g)に示す形状であって、図4に示す分割体301を3個組み合わせて、図5に示す形状に形成し、且つ筒状部の長手方向に亘って同一断面形状の集熱体300を用いた熱交換器を2個設置した茹麺器の立上り時間と熱効率を測定した。茹麺機は、タニコー株式会社製TU−50Nを使用し、熱交換管は、SUS304を用いて内径73.3mm、外径76.3mm、長さ305mmに形成したものを使用し、集熱体はAl6063を用いて内径68.2mm、外径74.2mm、長さ250mmに形成したものを使用した。側定時の室温は5.8℃で、液槽に10.2℃の水を36リットル貯留し、純プロパンガスを使用した。   The heat collecting fins 32 have the shape shown in FIG. 2G and are formed in the shape shown in FIG. 5 by combining three divided bodies 301 shown in FIG. 4 and the same in the longitudinal direction of the cylindrical portion. The rise time and thermal efficiency of a bowl noodle device in which two heat exchangers using the heat collector 300 having a cross-sectional shape were installed were measured. The noodle machine uses TU-50N manufactured by Taniko Co., Ltd., and the heat exchanger tube uses SUS304 with an inner diameter of 73.3 mm, an outer diameter of 76.3 mm, and a length of 305 mm. Used an Al6063 formed with an inner diameter of 68.2 mm, an outer diameter of 74.2 mm, and a length of 250 mm. The fixed room temperature was 5.8 ° C., 36 liters of 10.2 ° C. water was stored in the liquid tank, and pure propane gas was used.

10.2℃から98℃になるまでの立上り時間は36分で、熱効率は62%であった。又、30℃から98℃になるまでの立上り時間は19分10秒で、熱効率は66.7%であった。このように立上り時間、熱効率共に良好であった。   The rise time from 10.2 ° C. to 98 ° C. was 36 minutes, and the thermal efficiency was 62%. The rise time from 30 ° C. to 98 ° C. was 19 minutes and 10 seconds, and the thermal efficiency was 66.7%. Thus, both rise time and thermal efficiency were good.

本発明の熱交換器1は、熱交換を必要とする加熱装置等の各種機器に利用することが出来、特に、油を加熱するフライヤーや水を加熱する茹麺器等の液体加熱装置に好適に利用することが出来る。   The heat exchanger 1 of the present invention can be used for various devices such as a heating device that requires heat exchange, and is particularly suitable for a liquid heating device such as a fryer that heats oil or a rice noodle device that heats water. Can be used.

1 熱交換器
10 茹麺器
2 熱交換管
3 集熱体
30 集熱体を構成する分割体
300 集熱体
301 集熱体を構成する分割体
31 筒状部
32 集熱フィン
325 補助フィン
37 係止突起
38 係合突起
39 係合凹部
41 凹部
6 本体
62 液槽
63 ガスバーナー
64 燃焼室
65 排気路
69 流路
7 水
H 集熱フィンの高さ
W 集熱フィンの厚み
DESCRIPTION OF SYMBOLS 1 Heat exchanger 10 Crab noodle device 2 Heat exchange pipe 3 Heat collection body 30 Divided body which comprises heat collection body 300 Heat collection body 301 Division body which comprises heat collection body 31 Cylindrical part 32 Heat collection fin 325 Auxiliary fin 37 Locking projection 38 Engaging projection 39 Engaging recess 41 Recessing 6 Main body 62 Liquid tank 63 Gas burner 64 Combustion chamber 65 Exhaust passage 69 Channel 7 Water H Height of heat collecting fin W Thickness of heat collecting fin

Claims (14)

熱交換器内部の熱を熱交換器外部の被加熱体に伝達する熱交換器であって、両端が開口した筒状の熱交換管と当該熱交換管内部に設置される集熱体を備え、前記集熱体は、筒状部と、当該筒状部と一体成形され、当該筒状部の内壁面から当該筒状部の内方へ延設された、相互に接触していない複数の集熱フィンを備え、前記筒状部の外周面には、前記筒状部の長手方向に亘って連続し、前記筒状部の内方へ突出する、前記筒状部に弾性を付与する凹部が形成され、少なくとも、前記集熱体が加熱されて膨張した際に、前記熱交換管と前記集熱体とが、しまりばめの状態になることを特徴とする熱交換器。 A heat exchanger for transferring heat inside the heat exchanger to a heated body outside the heat exchanger, comprising a cylindrical heat exchange pipe having both ends opened and a heat collector installed inside the heat exchange pipe The heat collector is integrally formed with the tubular portion and the tubular portion, and extends from the inner wall surface of the tubular portion to the inside of the tubular portion, and is not in contact with each other. A concave portion that includes a heat collecting fin and that is provided on the outer circumferential surface of the cylindrical portion, extends in the longitudinal direction of the cylindrical portion, and protrudes inward of the cylindrical portion to impart elasticity to the cylindrical portion. Is formed, and at least when the heat collector is heated and expanded, the heat exchanger tube and the heat collector are in a tight fit state. 前記熱交換管と前記集熱体が加熱される前において、前記熱交換管と前記集熱体とが、しまりばめの状態であることを特徴とする請求項1に記載の熱交換器。 The heat exchanger according to claim 1 , wherein the heat exchange tube and the heat collector are in an interference fit state before the heat exchange tube and the heat collector are heated. 前記熱交換管と前記集熱体が加熱される前において、前記熱交換管と前記集熱体とが、ゆるみばめの状態であることを特徴とする請求項1に記載の熱交換器。 2. The heat exchanger according to claim 1 , wherein the heat exchange tube and the heat collector are in a loose fit state before the heat exchange tube and the heat collector are heated. 前記集熱体は、前記集熱体の軸に対し平行方向に分割して形成したことを特徴とする請求項1〜3のうちいずれか1項に記載の熱交換器。 The heat exchanger according to any one of claims 1 to 3 , wherein the heat collector is divided in a direction parallel to an axis of the heat collector. 前記集熱体は、前記集熱体の軸に対し垂直方向に分割して形成したことを特徴とする請求項1〜3のうちいずれか1項に記載の熱交換器。 The heat exchanger according to any one of claims 1 to 3 , wherein the heat collector is divided in a direction perpendicular to an axis of the heat collector. 前記集熱体は、同一形状の複数の分割体を組み合わせて形成したことを特徴とする請求項4又は5に記載の熱交換器。 The heat exchanger according to claim 4 or 5 , wherein the heat collector is formed by combining a plurality of divided bodies having the same shape. 前記集熱体は、前記集熱体の軸方向に対して垂直方向の断面視において、少なくとも一部が湾曲した集熱フィンを備えることを特徴とする請求項1〜6のうちいずれか1項に記載の熱交換器。 The converging Netsutai, in cross section perpendicular to the axial direction of the heat collecting member, any one of claims 1 to 6, characterized in that it comprises a heat collecting fins at least partially curved The heat exchanger as described in. 前記集熱体は、アルミニウム合金又は純アルミニウムで形成し、前記熱交換管はステンレスで形成したことを特徴とする請求項1〜7のうちいずれか1項に記載の熱交換器。 The heat exchanger according to any one of claims 1 to 7 , wherein the heat collector is formed of an aluminum alloy or pure aluminum, and the heat exchange tube is formed of stainless steel. 前記集熱体の表面には、アルマイト加工を施したことを特徴とする請求項8に記載の熱交換器。 The heat exchanger according to claim 8 , wherein the surface of the heat collector is anodized. 熱交換器内部の熱を熱交換器外部の被加熱体に伝達する熱交換器の製造方法であって、両端が開口した筒状の熱交換管を成形する一方、筒状部と、当該筒状部の内壁面から当該筒状部の内方へ延設される、相互に接触しない複数の集熱フィンを備え、前記筒状部の外周面には、前記筒状部の長手方向に亘って連続し、前記筒状部の内方へ突出する、前記筒状部に弾性を付与する凹部が形成された集熱体を一体成形し、前記熱交換管内部に前記集熱体を挿入し、しまりばめの状態で設置することを特徴とする熱交換器の製造方法。 A heat exchanger manufacturing method for transferring heat inside a heat exchanger to an object to be heated outside the heat exchanger, wherein a cylindrical heat exchange pipe having both ends opened is formed, while a cylindrical portion and the cylinder A plurality of heat collecting fins extending from the inner wall surface of the cylindrical portion to the inside of the cylindrical portion and not in contact with each other, and the outer peripheral surface of the cylindrical portion extends in the longitudinal direction of the cylindrical portion A heat collecting body that is continuous and protrudes inward of the tubular portion and that is formed with a concave portion that imparts elasticity to the tubular portion, and the heat collecting body is inserted into the heat exchange tube. A method of manufacturing a heat exchanger, characterized by being installed in a tight fit state. 前記請求項1〜9のうちいずれか1項に記載の熱交換器を用いた加熱装置。 The heating apparatus using the heat exchanger of any one of the said Claims 1-9 . 前記加熱装置は、本体内部の上方に液槽を備え、前記熱交換器が、前記液槽の対向面に亘って設置されている液体加熱装置であることを特徴とする請求項11に記載の加熱装置。 The heating device comprises a liquid tank above the internal body, the heat exchanger, according to claim 11, characterized in that said liquid tank liquid heating device installed over the opposite face of Heating device. 前記液体加熱装置は、茹麺器であることを特徴とする請求項12に記載の加熱装置。 The heating device according to claim 12 , wherein the liquid heating device is a crab noodle device. 前記液体加熱装置は、フライヤーであることを特徴とする請求項12に記載の加熱装置。 The heating device according to claim 12 , wherein the liquid heating device is a fryer.
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