JP5608728B2 - Tube heat exchanger and manufacturing method thereof - Google Patents

Tube heat exchanger and manufacturing method thereof Download PDF

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Publication number
JP5608728B2
JP5608728B2 JP2012504229A JP2012504229A JP5608728B2 JP 5608728 B2 JP5608728 B2 JP 5608728B2 JP 2012504229 A JP2012504229 A JP 2012504229A JP 2012504229 A JP2012504229 A JP 2012504229A JP 5608728 B2 JP5608728 B2 JP 5608728B2
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tube
heat transfer
heat exchanger
transfer tube
fins
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JPWO2011111202A1 (en
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哲也 宮田
義和 諏訪
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Sumitomo Heavy Industries Process Equipment Co Ltd
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Sumitomo Heavy Industries Process Equipment 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
    • F28D7/16—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 arranged in parallel spaced relation
    • F28D7/163—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 arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F28D7/1653—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 arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having a square or rectangular shape
    • F28D7/1661—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 arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having a square or rectangular shape with particular pattern of flow of the heat exchange media, e.g. change of flow direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
    • B21C37/205—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with annular guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
    • B21C37/207—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with helical guides
    • 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
    • F28D7/16—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 arranged in parallel spaced relation
    • F28D7/163—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 arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F28D7/1638—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 arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing with particular pattern of flow or the heat exchange medium flowing inside the conduits assemblies, e.g. change of flow direction from one conduit assembly to another one
    • F28D7/1646—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 arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing with particular pattern of flow or the heat exchange medium flowing inside the conduits assemblies, e.g. change of flow direction from one conduit assembly to another one with particular pattern of flow of the heat exchange medium flowing outside the conduit assemblies, e.g. change of flow direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
    • F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F28F9/0132—Auxiliary supports for elements for tubes or tube-assemblies formed by slats, tie-rods, articulated or expandable rods
    • 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
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/08—Fastening; Joining by clamping or clipping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49377—Tube with heat transfer means
    • Y10T29/49378—Finned tube
    • Y10T29/49382—Helically finned
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49377—Tube with heat transfer means
    • Y10T29/49378—Finned tube
    • Y10T29/49385—Made from unitary workpiece, i.e., no assembly

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Milling Processes (AREA)

Description

本発明は、複数の伝熱管が並設されるチューブ式熱交換器に関し、また、そのチューブ式熱交換器の製造方法に関する。   The present invention relates to a tube heat exchanger in which a plurality of heat transfer tubes are arranged in parallel, and to a method for manufacturing the tube heat exchanger.

従来、複数の伝熱管が並設されるチューブ式熱交換器として、内部に流体を通す管体と、管体の外周部に配置されるスパイラルフィンとを有する伝熱管を複数備えるチューブ式熱交換器が知られている。そして、斯かるチューブ式熱交換器においては、保持具が各伝熱管を保持している（例えば、特許文献１）。   Conventionally, as a tube-type heat exchanger in which a plurality of heat transfer tubes are arranged in parallel, a tube-type heat exchange provided with a plurality of heat transfer tubes each having a tubular body through which a fluid passes and spiral fins arranged on the outer periphery of the tubular body. The vessel is known. And in such a tube-type heat exchanger, the holder has hold | maintained each heat exchanger tube (for example, patent document 1).

日本国特開２００２−１４７９８８号公報Japanese Laid-Open Patent Publication No. 2002-147988

しかしながら、斯かるチューブ式熱交換器においては、保持具がスパイラルフィンの外縁と当接することで伝熱管を保持するため、例えば伝熱管の重量がスパイラルフィンに加わることで、スパイラルフィンが変形する場合がある。これにより、例えば、伝熱管が撓むため、伝熱管に割れや亀裂が生じたり、また、伝熱管の外部を流通する熱媒体の流動を変化させるため、熱交換効率を低下させたりするといった問題を引き起こす場合がある。   However, in such a tube-type heat exchanger, the holder holds the heat transfer tube by contacting the outer edge of the spiral fin. For example, when the weight of the heat transfer tube is added to the spiral fin, the spiral fin is deformed. There is. Thereby, for example, because the heat transfer tube is bent, the heat transfer tube is cracked or cracked, or the flow of the heat medium flowing outside the heat transfer tube is changed, so that the heat exchange efficiency is lowered. May cause.

よって、本発明は、斯かる事情に鑑み、スパイラルフィンが変形するのを防止できるチューブ式熱交換器及びその製造方法を提供することを課題とする。   Therefore, in view of such circumstances, an object of the present invention is to provide a tube-type heat exchanger that can prevent the spiral fin from being deformed and a method for manufacturing the same.

本発明に係るチューブ式熱交換器は、軸心方向が平行となるように並設される複数の伝熱管と、伝熱管を保持する保持具とを備え、各伝熱管は、内部に流体を通す管体と、フィンが管体の外周部に沿って螺旋状に配置されて構成されるスパイラルフィンとを備えるチューブ式熱交換器において、各伝熱管は、スパイラルフィンの端部同士が離間するようにして、複数のスパイラルフィンを軸心方向で並設し、保持具は、スパイラルフィン間に配置されると共に、管体の外周部に当接することを特徴とする。   The tube heat exchanger according to the present invention includes a plurality of heat transfer tubes arranged in parallel so that the axial directions thereof are parallel to each other, and a holder for holding the heat transfer tubes, and each heat transfer tube has a fluid therein. In a tube-type heat exchanger comprising a tubular body that passes through and a spiral fin that is configured by spirally arranging fins along the outer periphery of the tubular body, the ends of the spiral fins are spaced apart from each other. In this manner, the plurality of spiral fins are arranged in parallel in the axial direction, and the holder is disposed between the spiral fins and is in contact with the outer peripheral portion of the tubular body.

本発明に係るチューブ式熱交換器によれば、各伝熱管には、複数のスパイラルフィンが伝熱管の軸心方向で並設されており、しかも、スパイラルフィンの端部同士が離間している。そして、スパイラルフィン間に配置される保持具が、各管体の外周部に当接することで伝熱管を保持する。したがって、保持具がスパイラルフィンに接することなく各伝熱管を保持できる。   According to the tube-type heat exchanger according to the present invention, each heat transfer tube has a plurality of spiral fins arranged in parallel in the axial direction of the heat transfer tube, and the ends of the spiral fins are separated from each other. . And the holder arrange | positioned between spiral fins hold | maintains a heat exchanger tube by contact | abutting to the outer peripheral part of each tubular body. Therefore, each heat exchanger tube can be held without the holder being in contact with the spiral fin.

また、本発明に係るチューブ式熱交換器においては、各伝熱管のスパイラルフィンは、伝熱管の径方向で隣設される他の伝熱管のスパイラルフィンに入り込むように配置されてもよい。   Moreover, in the tube type heat exchanger which concerns on this invention, the spiral fin of each heat exchanger tube may be arrange | positioned so that it may enter in the spiral fin of the other heat exchanger tube adjacently provided in the radial direction of a heat exchanger tube.

斯かる構成のチューブ式熱交換器によれば、各伝熱管のスパイラルフィンが伝熱管の径方向で隣設される他の伝熱管のスパイラルフィンに入り込むように、各伝熱管が配置される。これにより、隣設する伝熱管のスパイラルフィン同士が伝熱管の軸心方向で重なり合うため、従来のように、保持具がスパイラルフィンの外縁と当接することで伝熱管を保持するチューブ式熱交換器と比較して、装置を小型化することができる。   According to the tube heat exchanger having such a configuration, the heat transfer tubes are arranged such that the spiral fins of the heat transfer tubes enter the spiral fins of the other heat transfer tubes adjacent in the radial direction of the heat transfer tubes. As a result, since the spiral fins of the adjacent heat transfer tubes overlap with each other in the axial direction of the heat transfer tubes, the tube heat exchanger that holds the heat transfer tubes by contacting the outer edges of the spiral fins as in the prior art. As compared with the above, the apparatus can be downsized.

また、本発明に係るチューブ式熱交換器においては、保持具は、各管体を挟持する複数の挟持部材を備えてもよい。   Moreover, in the tube type heat exchanger which concerns on this invention, a holder may be provided with the some clamping member which clamps each pipe body.

斯かる構成のチューブ式熱交換器によれば、保持具が複数の挟持部材で各管体を挟持する。したがって、保持具が管体を安定した状態で保持できる。   According to the tube heat exchanger having such a configuration, the holder clamps each tubular body with the plurality of clamping members. Therefore, the holder can hold the tube in a stable state.

また、本発明に係るチューブ式熱交換器においては、挟持部材は、各管体を挟持する挟持部を複数備え、各挟持部は、各管体の一部を嵌め込むべく凹状に形成されてもよい。   Further, in the tube heat exchanger according to the present invention, the holding member includes a plurality of holding portions for holding each tubular body, and each holding portion is formed in a concave shape so as to fit a part of each tubular body. Also good.

斯かる構成のチューブ式熱交換器によれば、凹状に形成される複数の挟持部が各管体の一部を嵌め込むと共に各管体を挟持する。したがって、各管体が各挟持部材に対して相対的に変位するのを防止できる。   According to the tube type heat exchanger having such a configuration, the plurality of holding portions formed in a concave shape fits a part of each tube body and holds each tube body. Therefore, it is possible to prevent each tubular body from being displaced relative to each holding member.

また、本発明に係るチューブ式熱交換器においては、保持具は、各管体を挟持する挟持部材同士を接続する接続部材を備える。挟持部材は、接続部材を係止する凹状の係止部を備える。接続部材は、挟持部材の下縁部が嵌め込まれる凹状の第１嵌合部と、前記挟持部材の直下に配置される他の挟持部材の上縁部が嵌め込まれる凹状の第２嵌合部と、第１嵌合部と第２嵌合部との間に配置されかつ挟持部材の前記係止部に係止される被係止部と、を備える。 Moreover, in the tube type heat exchanger which concerns on this invention, a holder is provided with the connection member which connects the clamping members which clamp each pipe body . The holding member includes a concave locking portion that locks the connection member. The connecting member includes a concave first fitting portion into which a lower edge portion of the holding member is fitted, and a concave second fitting portion into which an upper edge portion of another holding member disposed immediately below the holding member is fitted. And a locked portion that is disposed between the first fitting portion and the second fitting portion and is locked to the locking portion of the holding member.

斯かる構成のチューブ式熱交換器によれば、各管体を挟持する挟持部材同士を接続部材が接続する。したがって、接続部材により、各挟持部材同士が支持して補強し合うため、各挟持部材が自重や伝熱管からの荷重等により撓んだり湾曲したりするのを防止できる。   According to the tube heat exchanger having such a configuration, the connecting member connects the holding members that hold the tubes. Therefore, since each clamping member supports and reinforces each other by the connecting member, each clamping member can be prevented from being bent or curved due to its own weight, a load from the heat transfer tube, or the like.

また、本発明に係るチューブ式熱交換器の製造方法は、軸心方向が平行となるように並設される複数の伝熱管と、伝熱管を保持する保持具とを備え、各伝熱管は、内部に流体を通す管体と、フィンが管体の外周部に沿って螺旋状に配置されて構成されるスパイラルフィンとを備えるチューブ式熱交換器の製造方法において、各伝熱管が複数のスパイラルフィンを軸心方向で並設すると共にスパイラルフィンの端部同士が離間するように、各伝熱管のフィンを切削する工程と、保持具が各伝熱管を保持するように、スパイラルフィン間に保持具を配置し、管体の外周部に保持具を当接させる工程とを備えることを特徴とする。   Moreover, the manufacturing method of the tube-type heat exchanger according to the present invention includes a plurality of heat transfer tubes arranged in parallel so that the axial directions are parallel, and a holder for holding the heat transfer tubes, and each heat transfer tube is In the method for manufacturing a tube heat exchanger, comprising a tubular body that allows fluid to pass through and a spiral fin that is configured by spirally arranging fins along the outer periphery of the tubular body, each heat transfer tube includes a plurality of heat transfer tubes. The process of cutting the fins of each heat transfer tube so that the spiral fins are arranged in parallel in the axial direction and the ends of the spiral fins are separated from each other, and the holding tool holds each heat transfer tube between the spiral fins. And a step of placing the holding tool and bringing the holding tool into contact with the outer peripheral portion of the tubular body.

本発明に係るチューブ式熱交換器の製造方法によれば、各伝熱管のフィンを切削することにより、各伝熱管において複数のスパイラルフィンが軸心方向で並設されると共に、スパイラルフィンの端部同士が離間する。そして、スパイラルフィン間に保持具を配置し、管体の外周部に保持具を当接させることにより、保持具がスパイラルフィンに接することなく各伝熱管を保持するチューブ式熱交換器を製造できる。   According to the method for manufacturing a tube heat exchanger according to the present invention, a plurality of spiral fins are juxtaposed in the axial direction in each heat transfer tube by cutting the fins of each heat transfer tube, and the ends of the spiral fins The parts are separated from each other. A tube-type heat exchanger that holds each heat transfer tube without the holder being in contact with the spiral fin can be manufactured by disposing the holder between the spiral fins and bringing the holder into contact with the outer peripheral portion of the tube body. .

また、本発明に係るチューブ式熱交換器の製造方法においては、各伝熱管のフィンを切削する際に、伝熱管を支持する支持手段が伝熱管を伝熱管の軸心方向を中心に回転させると共に、フィンを切削する切削部と伝熱管とが伝熱管の軸心方向で相対的に変位すべく、切削部及び支持手段の少なくとも何れか一方が伝熱管の軸心方向で移動してもよい。   Moreover, in the manufacturing method of the tube type heat exchanger which concerns on this invention, when cutting the fin of each heat exchanger tube, the support means which supports a heat exchanger tube rotates a heat exchanger tube centering on the axial center direction of a heat exchanger tube. In addition, at least one of the cutting portion and the support means may move in the axial direction of the heat transfer tube so that the cutting portion for cutting the fin and the heat transfer tube are relatively displaced in the axial direction of the heat transfer tube. .

斯かるチューブ式熱交換器の製造方法によれば、伝熱管を支持する支持手段が伝熱管を伝熱管の軸心方向を中心に回転させる。しかも、フィンを切削する切削部及び支持手段の少なくとも何れか一方が伝熱管の軸心方向で移動するため、切削部と伝熱管とが伝熱管の軸心方向で相対的に変位する。したがって、切削部が螺旋状のフィンを正確に切削できる。   According to such a method for manufacturing a tube heat exchanger, the support means for supporting the heat transfer tube rotates the heat transfer tube around the axial direction of the heat transfer tube. And since at least any one of the cutting part which cuts a fin, and a support means moves in the axial center direction of a heat exchanger tube, a cutting part and a heat exchanger tube displace relatively in the axial center direction of a heat exchanger tube. Therefore, the cutting portion can accurately cut the spiral fin.

以上の如く、本発明に係るチューブ式熱交換器及びその製造方法によれば、保持具がスパイラルフィンに接することなく各伝熱管を保持できるため、スパイラルフィンが変化するのを防止できるという優れた効果を奏する。   As described above, according to the tube heat exchanger and the method for manufacturing the same according to the present invention, each heat transfer tube can be held without the holder being in contact with the spiral fin, so that the spiral fin can be prevented from changing. There is an effect.

本発明の一実施形態に係るチューブ式熱交換器の全体図であって、斜視図を示す。1 is an overall view of a tube heat exchanger according to an embodiment of the present invention, and shows a perspective view. FIG. 同実施形態に係るチューブ式熱交換器の要部概要図であって、内視平面図を示す。It is a principal part schematic diagram of the tube type heat exchanger which concerns on the same embodiment, Comprising: An internal plan view is shown. 同実施形態に係るチューブ式熱交換器における伝熱管及び保持具の要部概要図であって、斜視図を示す。It is a principal part schematic diagram of the heat exchanger tube and holder in the tube type heat exchanger which concerns on the same embodiment, Comprising: A perspective view is shown. 同実施形態に係るチューブ式熱交換器における保持具の要部概要図であって、斜視図を示す。It is a principal part schematic diagram of the holder in the tube type heat exchanger which concerns on the same embodiment, Comprising: A perspective view is shown. 同実施形態に係る保持具における挟持部材の全体図であって、（ａ）及び（ｂ）はそれぞれ正面図を示す。It is a general view of the clamping member in the holder which concerns on the embodiment, Comprising: (a) And (b) shows a front view, respectively. 同実施形態に係る保持具における接続部材の全体図であって、（ａ）は平面図、（ｂ）は正面図、（ｃ）は側面図を示す。It is a general view of the connection member in the holder concerning the embodiment, (a) is a top view, (b) is a front view, (c) shows a side view. 同実施形態に係るチューブ式熱交換器における伝熱管の製造方法を説明する図であって、（ａ）は縦断面図、（ｂ）はＡ−Ａ線における断面図を示す。It is a figure explaining the manufacturing method of the heat exchanger tube in the tube type heat exchanger concerning the embodiment, (a) is a longitudinal section and (b) shows a sectional view in an AA line. 同実施形態に係るチューブ式熱交換器における伝熱管の製造方法を説明する図であって、（ａ）は縦断面図、（ｂ）はＢ−Ｂ線における拡大断面図を示す。It is a figure explaining the manufacturing method of the heat exchanger tube in the tube type heat exchanger concerning the embodiment, (a) is a longitudinal cross-sectional view, (b) shows the expanded sectional view in the BB line. 本発明の他の実施形態に係るチューブ式熱交換器の要部概要図であって、（ａ）は保持具の斜視図、（ｂ）は伝熱管及び保持具の斜視図を示す。It is a principal part schematic diagram of the tube-type heat exchanger which concerns on other embodiment of this invention, Comprising: (a) is a perspective view of a holder, (b) shows the perspective view of a heat exchanger tube and a holder. 本発明のさらに他の実施形態に係るチューブ式熱交換器における伝熱管の製造方法を説明する図であって、（ａ）及び（ｂ）はそれぞれ縦断面図を示す。It is a figure explaining the manufacturing method of the heat exchanger tube in the tube type heat exchanger concerning other embodiments of the present invention, and (a) and (b) show a longitudinal section, respectively.

以下、本発明に係るチューブ式熱交換器における一実施形態について、図１〜図８を参酌して説明する。   Hereinafter, an embodiment of a tube heat exchanger according to the present invention will be described with reference to FIGS.

本実施形態に係るチューブ式熱交換器は、図１〜図６に示すように、軸心方向が平行（略平行）となるように並設される複数の伝熱管１と、各伝熱管１を内部に収容する装置本体２と、各伝熱管１を保持する複数の保持具３とを備える。なお、本実施形態に係るチューブ式熱交換については、一般的に、伝熱管１が「チューブ」と、装置本体２が「シェル」と、熱交換器自身が「シェルアンドチューブ式熱交換器」と、それぞれ呼ばれている。   As shown in FIGS. 1 to 6, the tube heat exchanger according to the present embodiment includes a plurality of heat transfer tubes 1 arranged in parallel so that the axial directions are parallel (substantially parallel), and each heat transfer tube 1. Is provided with a plurality of holders 3 for holding the heat transfer tubes 1. In addition, about the tube type heat exchange which concerns on this embodiment, generally the heat exchanger tube 1 is "tube", the apparatus main body 2 is "shell", and heat exchanger itself is a "shell and tube type heat exchanger." And called each.

各伝熱管１は、気体や液体等の流体（被伝熱対象体）を内部に通す管体１１と、管体１１の外周部に配置されるスパイラルフィン１２とを備える。また、各伝熱管１は、管体１１の両端部が装置本体２に連結されることで、装置本体２に固定されている。   Each heat transfer tube 1 includes a tube body 11 through which a fluid (a heat transfer target body) such as a gas or a liquid passes, and a spiral fin 12 disposed on the outer periphery of the tube body 11. Each heat transfer tube 1 is fixed to the apparatus main body 2 by connecting both ends of the tube body 11 to the apparatus main body 2.

そして、各伝熱管１は、伝熱管１の径方向（上下方向や横方向）に複数列配置されていると共に、伝熱管１の径方向で隣設される他の伝熱管１と、軸心間の距離がそれぞれ等しくなるように配置されている。しかも、各伝熱管１は、自身のスパイラルフィン１２の外縁側（先端側）が伝熱管１の径方向で隣設される他の伝熱管１のスパイラルフィン１２に入り込むように配置されている。即ち、伝熱管１の径方向で隣設されているスパイラルフィン１２，１２同士は、伝熱管１の軸心方向で重なり合っている。   Each of the heat transfer tubes 1 is arranged in a plurality of rows in the radial direction (vertical direction or horizontal direction) of the heat transfer tube 1 and is axially centered with another heat transfer tube 1 provided adjacent in the radial direction of the heat transfer tube 1. The distances between them are equal to each other. Moreover, each heat transfer tube 1 is arranged so that the outer edge side (tip side) of its own spiral fin 12 enters the spiral fin 12 of another heat transfer tube 1 that is adjacent in the radial direction of the heat transfer tube 1. That is, the spiral fins 12, 12 adjacent in the radial direction of the heat transfer tube 1 overlap in the axial direction of the heat transfer tube 1.

各管体１１は、軸心方向に亘って同径であって、真っ直ぐな管、即ち、直管に形成されている。また、各管体１１は、カーボンスチールやステンレススチール等の熱伝導率の高い金属を素材として形成されている。   Each tubular body 11 has the same diameter in the axial direction and is formed into a straight pipe, that is, a straight pipe. Each tube 11 is made of a metal having high thermal conductivity such as carbon steel or stainless steel.

スパイラルフィン１２は、伝熱管１の軸心方向で端部同士が離間するようにして、各伝熱管１の軸心方向で複数並設されている。そして、各スパイラルフィン１２は、フィン（本願において、管体１１の外周一周り分を一つの「フィン」としている）１２１が管体１１の外周部に沿って螺旋状に配置されて構成されている。なお、スパイラルフィン１２は、アルミニウムや銅等の熱伝導率の高い金属を素材として形成されている。   A plurality of spiral fins 12 are arranged side by side in the axial direction of each heat transfer tube 1 so that the ends thereof are separated from each other in the axial direction of the heat transfer tube 1. Each spiral fin 12 is configured such that fins (in the present application, a portion around the outer periphery of the tube body 11 is defined as one “fin”) 121 are arranged spirally along the outer periphery of the tube body 11. Yes. The spiral fin 12 is made of a metal having high thermal conductivity such as aluminum or copper.

また、各スパイラルフィン１２は、伝熱管１（管体１１）の径方向に広がる板状体であって、伝熱管１（管体１１）の軸心と軸心が一致する螺旋状の板状体に形成されている。そして、各スパイラルフィン１２は、各フィン１２１が伝熱管１の軸心方向で等間隔となるように、各フィン１２１が連設されて構成されている。   Each spiral fin 12 is a plate-like body extending in the radial direction of the heat transfer tube 1 (tube body 11), and has a spiral plate shape in which the axial center coincides with the axis of the heat transfer tube 1 (tube body 11). Formed in the body. Each spiral fin 12 is configured by connecting the fins 121 so that the fins 121 are equally spaced in the axial direction of the heat transfer tube 1.

さらに、各スパイラルフィン１２は、隣設される他の伝熱管１に設けられる各スパイラルフィン１２と、フィン１２１の旋回方向がそれぞれ逆方向となるように形成されている。これにより、伝熱管１の径方向で隣設されているスパイラルフィン１２，１２同士は、各フィン１２１が平行となるように配置されている。   Further, each spiral fin 12 is formed so that the spiral direction of the fin 121 and the spiral direction of the fin 121 provided in the other adjacent heat transfer tube 1 are opposite to each other. Thereby, the spiral fins 12 and 12 adjacently arranged in the radial direction of the heat transfer tube 1 are arranged so that the fins 121 are parallel to each other.

装置本体２は、内部に密閉空間を有する胴体２１と、流体を胴体２１の内部に流入するための流体入口部２２と、流体入口部２２から流入した流体を、往路側の各伝熱管１に分流するための第１貯留部２３と、往路側の各伝熱管１から流出された流体を、合流し且つ復路側の各伝熱管１に分流するための第２貯留部２４と、復路側の各伝熱管１から流出された流体を、合流するための第３貯留部２５と、第３貯留部２５の流体を胴体２１の外部に流出するための流体出口部２６とを備える。   The apparatus main body 2 includes a body 21 having a sealed space inside, a fluid inlet portion 22 for allowing fluid to flow into the body 21, and a fluid flowing from the fluid inlet portion 22 into each heat transfer tube 1 on the forward path side. A first reservoir 23 for diversion, a second reservoir 24 for merging and diverting the fluid flowing out from each heat transfer tube 1 on the forward path side to each heat transfer tube 1 on the return path side, A third reservoir 25 for joining the fluids flowing out from the heat transfer tubes 1 and a fluid outlet 26 for flowing the fluid of the third reservoir 25 out of the body 21 are provided.

そして、装置本体２は、気体や流体等の熱媒体（加熱媒体又は冷却媒体）を胴体２１の内部に流入するための媒体入口部２７と、胴体２１の内部で且つ各伝熱管１の外部を流通した熱媒体を、胴体２１の外部に流出するための媒体出口部２８とを備える。なお、図１及び図２において、流体の流れを実線の矢印で示し、熱媒体の流れを破線の矢印で示している。   The apparatus main body 2 includes a medium inlet 27 for flowing a heat medium (heating medium or cooling medium) such as gas or fluid into the body 21, and the inside of the body 21 and the outside of each heat transfer tube 1. A medium outlet 28 is provided for allowing the circulated heat medium to flow out of the body 21. 1 and 2, the flow of fluid is indicated by solid arrows, and the flow of the heat medium is indicated by broken arrows.

また、装置本体２は、往路側の各伝熱管１の一端部を第１貯留部２３の側壁に連結すると共に、往路側の各伝熱管１の他端部を第２貯留部２４の側壁に連結することで、往路側の各伝熱管１を固定している。そして、装置本体２は、復路側の各伝熱管１の一端部を第３貯留部２５の側壁に連結すると共に、復路側の各伝熱管１の他端部を第２貯留部２４の側壁に連結することで、復路側の各伝熱管１を固定している。   Further, the apparatus main body 2 connects one end portion of each heat transfer tube 1 on the forward path side to the side wall of the first storage portion 23, and the other end portion of each heat transfer tube 1 on the forward path side to the side wall of the second storage portion 24. By connecting, each heat transfer tube 1 on the forward path side is fixed. And the apparatus main body 2 connects the one end part of each heat exchanger tube 1 of a return path side to the side wall of the 3rd storage part 25, and uses the other end part of each heat transfer pipe 1 of a return path side to the side wall of the 2nd storage part 24. By connecting, the heat transfer tubes 1 on the return path side are fixed.

各保持具３は、各スパイラルフィン１２，１２間に配置され且つ各管体１１を挟持する複数の挟持部材３１と、各スパイラルフィン１２，１２間に配置され且つ各管体１１を挟持する挟持部材３１，３１同士を接続する複数の接続部材３２とを備える。また、各保持具３は、各挟持部材３１を装置本体２に固定させる固定手段３３を備える。   Each holding tool 3 is disposed between the spiral fins 12, 12 and sandwiches each tubular body 11, and is sandwiched between each spiral fin 12, 12 and sandwiches each tubular body 11. And a plurality of connecting members 32 for connecting the members 31, 31 to each other. Each holder 3 includes a fixing means 33 for fixing each holding member 31 to the apparatus main body 2.

これにより、各保持具３は、各スパイラルフィン１２，１２間に配置され、各管体１１の外周部と当接することにより、各スパイラルフィン１２に接することなく各伝熱管１を保持する。なお、保持具３は、伝熱管１の軸心方向に複数並設され、各伝熱管１の複数箇所を保持している。   Thereby, each holder 3 is arrange | positioned between each spiral fin 12 and 12, and hold | maintains each heat exchanger tube 1 without contacting each spiral fin 12 by contact | abutting with the outer peripheral part of each tube 11. A plurality of holders 3 are arranged in parallel in the axial direction of the heat transfer tubes 1 and hold a plurality of locations of each heat transfer tube 1.

各挟持部材３１は、長尺な板状に形成され、上縁部及び下縁部に、管体１１を挟持する複数の挟持部３１１を備える。また、各挟持部材３１は、接続部材３２が相対的に変位するのを防止すべく、接続部材３２を係止する係止部３１２を備える。そして、各挟持部材３１は、長手方向の両端部に、固定手段３３を用いて、装置本体２の胴体２１に固定されるための孔部３１３，３１３をそれぞれ備える。   Each clamping member 31 is formed in a long plate shape, and includes a plurality of clamping portions 311 that clamp the tube body 11 at the upper edge portion and the lower edge portion. Each clamping member 31 includes a locking portion 312 that locks the connection member 32 in order to prevent the connection member 32 from being relatively displaced. And each clamping member 31 is equipped with the hole parts 313 and 313 for fixing to the trunk | drum 21 of the apparatus main body 2 using the fixing means 33 in the both ends of a longitudinal direction, respectively.

また、挟持部材３１は、長手方向が伝熱管１（管体１１）の軸心方向と直交するように配置されていると共に、上下方向で複数並設されている。なお、挟持部材３１には、挟持部３１１及び係止部３１２の配置が異なる二つのタイプ（図５（ａ）及び図５（ｂ））が存在し、それぞれが上下方向において交互に配置されている。   In addition, the sandwiching member 31 is arranged so that its longitudinal direction is perpendicular to the axial direction of the heat transfer tube 1 (tube body 11), and a plurality of the sandwiching members 31 are arranged in the vertical direction. There are two types of the clamping member 31 (FIGS. 5A and 5B) in which the arrangement of the clamping part 311 and the locking part 312 is different, and they are alternately arranged in the vertical direction. Yes.

挟持部３１１は、管体１１の下方側を嵌め込むべく、挟持部材３１の上縁部にて、半円形の凹状に形成されると共に、管体１１の上方側を嵌め込むべく、挟持部材３１の下縁部にて、半円形の凹状に形成される。また、係止部３１２は、接続部材３２を嵌め込んで係止すべく、挟持部材３１の上縁部にて、矩形の凹状に形成される。   The sandwiching portion 311 is formed in a semicircular concave shape at the upper edge of the sandwiching member 31 so as to fit the lower side of the tube body 11, and the sandwiching member 31 so as to fit the upper side of the tube body 11. A semicircular concave shape is formed at the lower edge of the. Moreover, the latching | locking part 312 is formed in the rectangular concave shape in the upper edge part of the clamping member 31, so that the connection member 32 may be fitted and latched.

接続部材３２は、挟持部材３１の下縁部を嵌め込む凹状の第１嵌合部３２１と、その挟持部材３１の直下に配置されている他の挟持部材３１の上縁部を嵌め込む凹状の第２嵌合部３２２とを備える。また、接続部材３２は、各嵌合部３２１，３２２間に配置され且つ挟持部材３１の係止部３１２に係止される被係止部３２３を備える。   The connecting member 32 is a concave first fitting portion 321 that fits the lower edge portion of the clamping member 31 and a concave shape that fits the upper edge portion of the other clamping member 31 arranged immediately below the clamping member 31. A second fitting portion 322. The connection member 32 includes a locked portion 323 that is disposed between the fitting portions 321 and 322 and is locked to the locking portion 312 of the holding member 31.

本実施形態に係るチューブ式熱交換器の構成については以上の通りであり、次に、本実施形態に係るチューブ式熱交換器の製造方法について説明する。   The configuration of the tube heat exchanger according to this embodiment is as described above. Next, a method for manufacturing the tube heat exchanger according to this embodiment will be described.

まず、図７に示すように、第１の工程（スパイラルフィン成形工程）として、転造装置７により、伝熱管１のスパイラルフィン１２を成形する。ここで、第１の工程を説明するのに先立ち、転造装置７及び伝熱管１の原材料について説明する。   First, as shown in FIG. 7, the spiral fin 12 of the heat transfer tube 1 is formed by the rolling device 7 as a first step (spiral fin forming step). Here, prior to explaining the first step, raw materials for the rolling device 7 and the heat transfer tube 1 will be explained.

転造装置７は、螺旋状のディスク刃７１１を有する複数の転造部７１と、伝熱管１を支持する支持手段（図示していない）７２とを備える。そして、各転造部７１のディスク刃７１１は、伝熱管１の軸心方向を中心に回転すると共に、伝熱管１を伝熱管１の径方向の外方から押圧する。   The rolling device 7 includes a plurality of rolling portions 71 having spiral disk blades 711 and support means (not shown) 72 that supports the heat transfer tube 1. The disk blade 711 of each rolled portion 71 rotates around the axial direction of the heat transfer tube 1 and presses the heat transfer tube 1 from the outside in the radial direction of the heat transfer tube 1.

さらに、支持手段７２は、伝熱管１を伝熱管１の軸心方向を中心に回転させると共に、伝熱管１を支持しつつ伝熱管１の軸心方向に沿って移動する。また、伝熱管１は、カーボンスチールやステンレススチール等で形成された内管１ａに、アルミニウムや銅等で形成された外管１ｂを被覆した原材料から製造されている。   Further, the support means 72 rotates the heat transfer tube 1 around the axial direction of the heat transfer tube 1 and moves along the axial direction of the heat transfer tube 1 while supporting the heat transfer tube 1. The heat transfer tube 1 is manufactured from a raw material in which an inner tube 1a formed of carbon steel, stainless steel, or the like is covered with an outer tube 1b formed of aluminum, copper, or the like.

そして、第１の工程において、各転造部７１が三方向から外管１ｂを押圧しつつ回転すると共に、支持手段７２が伝熱管１を回転させつつ伝熱管１を伝熱管１の軸心方向に移動させる。これにより、内管１ａが外管１ｂに圧着されると共に、外管１ｂが伝熱管１の径方向に押し出される（伸ばされる）。すると、螺旋状に形成されるディスク刃７１１により、伝熱管１の径方向に押し出された外管１ｂが螺旋状のスパイラルフィン１２に加工される。   In the first step, each rolling portion 71 rotates while pressing the outer tube 1b from three directions, and the support means 72 rotates the heat transfer tube 1 while moving the heat transfer tube 1 in the axial direction of the heat transfer tube 1. Move to. Thereby, the inner tube 1a is pressure-bonded to the outer tube 1b, and the outer tube 1b is pushed out (stretched) in the radial direction of the heat transfer tube 1. Then, the outer tube 1 b extruded in the radial direction of the heat transfer tube 1 is processed into the spiral spiral fin 12 by the disk blade 711 formed in a spiral shape.

次に、図８に示すように、第２の工程（フィン切削工程）として、切削装置８により、伝熱管１のフィン１２１（スパイラルフィン１２の一部）を切削する。ここで、第２の工程を説明するのに先立ち、切削装置８について説明する。   Next, as shown in FIG. 8, as a second step (fin cutting step), the fin 121 (part of the spiral fin 12) of the heat transfer tube 1 is cut by the cutting device 8. Here, prior to explaining the second step, the cutting device 8 will be explained.

切削装置８は、複数のディスク刃８１１を有する切削部８１と、伝熱管１を支持する支持手段（図示していない）８２とを備える。そして、各切削部８１のディスク刃８１１は、伝熱管１の軸心方向を中心に回転すると共に、伝熱管１の径方向において伝熱管１と接離する一方、支持手段８２は、伝熱管１を伝熱管１の軸心方向を中心に回転させると共に、伝熱管１を支持しつつ伝熱管１の軸心方向に沿って移動する。   The cutting device 8 includes a cutting portion 81 having a plurality of disk blades 811 and support means (not shown) 82 for supporting the heat transfer tube 1. The disk blade 811 of each cutting portion 81 rotates about the axial direction of the heat transfer tube 1 and contacts and separates from the heat transfer tube 1 in the radial direction of the heat transfer tube 1, while the support means 82 is connected to the heat transfer tube 1. Is rotated around the axial direction of the heat transfer tube 1 and is moved along the axial direction of the heat transfer tube 1 while supporting the heat transfer tube 1.

そして、第２の工程において、切削部８１のディスク刃８１１が回転すると共に伝熱管１に接近することで、ディスク刃８１１が所定のフィン１２１の内縁（基端）まで切削する。さらに、支持手段８２が伝熱管１を回転させつつ伝熱管１を伝熱管１の軸心方向に移動させると、ディスク刃８１１は、厚み方向の中心がフィン１２１の厚み方向の中心と一致する状態で、フィン１２１を切削する。   In the second step, the disk blade 811 of the cutting portion 81 rotates and approaches the heat transfer tube 1, whereby the disk blade 811 cuts to the inner edge (base end) of the predetermined fin 121. Furthermore, when the support means 82 rotates the heat transfer tube 1 and moves the heat transfer tube 1 in the axial direction of the heat transfer tube 1, the disk blade 811 is in a state where the center in the thickness direction coincides with the center in the thickness direction of the fin 121. Then, the fin 121 is cut.

これにより、一つのスパイラルフィン１２が複数のスパイラルフィン１２，１２に分割される。したがって、伝熱管１には、複数のスパイラルフィン１２，１２が伝熱管１の軸心方向で並設されており、しかも、スパイラルフィン１２，１２の端部同士が離間している。   Thereby, one spiral fin 12 is divided into a plurality of spiral fins 12, 12. Therefore, a plurality of spiral fins 12, 12 are arranged in the heat transfer tube 1 in the axial direction of the heat transfer tube 1, and the ends of the spiral fins 12, 12 are separated from each other.

さらに、第３の工程（組立工程）として、各伝熱管１及び各保持具３を組み立てる。具体的には、図２及び図３に示すように、離間して配置されるスパイラルフィン１２，１２の端部間に、保持具３が配置される。そして、保持具３が各管体１１の外周部と当接することで各伝熱管１を保持するように、各挟持部材３１及び各接続部材３２が組み立てられる。   Furthermore, each heat transfer tube 1 and each holder 3 are assembled as a third step (assembly step). Specifically, as shown in FIGS. 2 and 3, the holder 3 is disposed between the end portions of the spiral fins 12 and 12 that are spaced apart from each other. And each clamping member 31 and each connection member 32 are assembled so that the holder 3 may contact | abut with the outer peripheral part of each tube 11, and each heat transfer tube 1 is hold | maintained.

以上より、本実施形態に係るチューブ式熱交換器によれば、伝熱管１の軸心方向で隣設されているスパイラルフィン１２，１２同士が離間するようにして、スパイラルフィン１２が伝熱管１の軸心方向で複数並設されている。そして、スパイラルフィン１２，１２間に配置される保持具３が各管体１１の外周部と当接することで、各保持具３が各伝熱管１を保持できる。したがって、各保持具３がスパイラルフィン１２に接することなく各伝熱管１を保持できるため、スパイラルフィン１２が変形するのを防止できる。   As described above, according to the tube heat exchanger according to the present embodiment, the spiral fins 12 are adjacent to each other in the axial direction of the heat transfer tube 1 so that the spiral fins 12 are separated from the heat transfer tube 1. Are arranged side by side in the axial direction. And each holder 3 can hold | maintain each heat exchanger tube 1 because the holder 3 arrange | positioned between the spiral fins 12 and 12 contact | abuts with the outer peripheral part of each tube 11. FIG. Therefore, since each holder 3 can hold | maintain each heat exchanger tube 1 without contacting the spiral fin 12, it can prevent that the spiral fin 12 deform | transforms.

また、本実施形態に係るチューブ式熱交換器によれば、各伝熱管１のスパイラルフィン１２が伝熱管１の径方向で隣設される他の伝熱管１のスパイラルフィン１２に入り込むように、各伝熱管１が配置されている。これにより、伝熱管１の径方向で隣接されているスパイラルフィン１２，１２同士が伝熱管１の軸心方向で重なり合うようにして、各伝熱管１が配置されているため、装置を小型化することができる。   Moreover, according to the tube type heat exchanger which concerns on this embodiment, so that the spiral fin 12 of each heat exchanger tube 1 may enter into the spiral fin 12 of the other heat exchanger tube 1 adjacently provided in the radial direction of the heat exchanger tube 1, Each heat transfer tube 1 is arranged. Thereby, since each heat transfer tube 1 is arranged so that the spiral fins 12, 12 adjacent in the radial direction of the heat transfer tube 1 overlap in the axial direction of the heat transfer tube 1, the apparatus is downsized. be able to.

また、本実施形態に係るチューブ式熱交換器によれば、複数の挟持部材３１が各管体１１を挟持するため、保持具３が各管体１１を安定した状態で保持できる。しかも、凹状に形成される各挟持部３１１が各管体１１の一部を嵌め込むと共に各管体１１を挟持するため、各管体１１が各挟持部材３１に対して相対的に変位するのを防止できる。   Moreover, according to the tube type heat exchanger which concerns on this embodiment, since the several clamping member 31 clamps each tubular body 11, the holder 3 can hold | maintain each tubular body 11 in the stable state. In addition, since each sandwiching portion 311 formed in a concave shape fits a part of each tubular body 11 and sandwiches each tubular body 11, each tubular body 11 is displaced relative to each sandwiching member 31. Can be prevented.

また、本実施形態に係るチューブ式熱交換器によれば、接続部材３２が各管体１１を挟持する挟持部材３１，３１同士を接続する。したがって、各挟持部材３１，３１同士が接続部材３２により支持し合う、即ち、補強し合うため、各挟持部材３１が自重や伝熱管１からの荷重等により撓んだり湾曲したりするのを防止できる。   Moreover, according to the tube type heat exchanger which concerns on this embodiment, the connection member 32 connects the clamping members 31 and 31 which clamp each tubular body 11 mutually. Therefore, since each clamping member 31 and 31 supports each other by the connection member 32, that is, reinforces each other, each clamping member 31 is prevented from being bent or bent due to its own weight, a load from the heat transfer tube 1, or the like. it can.

なお、本発明に係るチューブ式熱交換器及びその製造方法は、上記した実施の形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。また、下記する各種の変更例に係る構成や方法等を任意に選択して、上記した実施形態に係る構成や方法等に採用してもよいことは勿論である。   Note that the tube heat exchanger and the manufacturing method thereof according to the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. . Moreover, it is needless to say that configurations, methods, and the like according to various modifications described below may be arbitrarily selected and employed in the configurations, methods, and the like according to the above-described embodiments.

例えば、上記実施形態に係るチューブ式熱交換器においては、伝熱管１の径方向で隣設されているスパイラルフィン１２，１２同士が伝熱管１の軸心方向で重なり合うようにして、各伝熱管１が配置される場合を説明したが、斯かる場合に限られず、伝熱管１の径方向で隣設されているスパイラルフィン１２，１２同士が伝熱管１の軸心方向で重なり合わない、即ち、離間するようにして、各伝熱管１が配置される場合でもよい。   For example, in the tube heat exchanger according to the above-described embodiment, each heat transfer tube is configured such that spiral fins 12, 12 adjacent in the radial direction of the heat transfer tube 1 overlap in the axial direction of the heat transfer tube 1. Although the case where 1 is arrange | positioned was demonstrated, it is not restricted to such a case, Spiral fins 12 and 12 adjacently provided in the radial direction of the heat exchanger tube 1 do not overlap in the axial center direction of the heat exchanger tube 1, ie, The heat transfer tubes 1 may be arranged so as to be separated from each other.

また、上記実施形態に係るチューブ式熱交換器においては、各伝熱管１が軸心方向を水平方向（横方向）に沿って配置される場合を説明したが、斯かる場合に限られず、例えば、各伝熱管１が軸心方向を鉛直方向（上下方向）に沿って配置される場合でもよく、各伝熱管１が軸心方向を水平方向に対して傾斜する方向に沿って配置される場合でもよい。   Further, in the tube heat exchanger according to the above-described embodiment, the case where each heat transfer tube 1 is disposed along the axial direction along the horizontal direction (lateral direction) is not limited to such a case. The heat transfer tubes 1 may be arranged along the vertical direction (vertical direction) in the axial direction, or the heat transfer tubes 1 are arranged along the direction in which the axial direction is inclined with respect to the horizontal direction. But you can.

また、上記実施形態に係るチューブ式熱交換器においては、挟持部材３１，３１が上下方向で管体１１を挟持することにより管体１１を保持する場合を説明したが、斯かる場合に限られない。例えば、図９に示すように、保持具３０は、各管体１１を下方側から支持する支持部材３０１を複数備え、各支持部材３０１は、各管体１１が相対的に変位するのを防止すべく、管体１１の下方側を嵌め込むための凹部３０２を上縁部に備えることで、管体１１を保持する場合でもよい。   Further, in the tube heat exchanger according to the above-described embodiment, the case where the holding members 31 and 31 hold the tube body 11 by holding the tube body 11 in the vertical direction has been described. However, the present invention is limited to such a case. Absent. For example, as shown in FIG. 9, the holder 30 includes a plurality of support members 301 that support each tube body 11 from below, and each support member 301 prevents each tube body 11 from being relatively displaced. As a matter of course, the tubular body 11 may be held by providing the upper edge with a recess 302 for fitting the lower side of the tubular body 11.

また、上記実施形態に係るチューブ式熱交換器においては、接続部材３２が挟持部材３１，３１を各嵌合部３２１，３２２で嵌合することにより、挟持部材３１，３１同士を接続する場合を説明したが、斯かる場合に限られない。例えば、接続部材は、挟持部材同士を締結手段等で連結する場合でもよい。   Moreover, in the tube type heat exchanger which concerns on the said embodiment, when the connection member 32 fits the clamping members 31 and 31 in each fitting part 321,322, the case where the clamping members 31 and 31 are connected mutually. Although described, it is not limited to such a case. For example, the connection member may be a case where the clamping members are coupled to each other by fastening means or the like.

また、上記実施形態に係るチューブ式熱交換器においては、スパイラルフィン１２，１２同士を離間させるのに、フィン１２１（スパイラルフィン１２の一部）を切削する場合を説明したが、斯かる場合に限られない。   Moreover, in the tube type heat exchanger which concerns on the said embodiment, although the case where the fin 121 (a part of spiral fin 12) was cut in order to space apart the spiral fins 12 and 12, was explained, Not limited.

例えば、伝熱管は、管体と、スパイラルフィンとをそれぞれ独立した部材から成形する場合でもよい。具体的には、超高周波電流をスパイラルフィン及び管体に流し、管体の外周部に配置されたスパイラルフィンを連続的に溶着（溶接）することで、伝熱管の軸心方向で隣設されているスパイラルフィン同士が離間するようにして、各スパイラルフィンが伝熱管の軸心方向に複数並設される場合でもよく、また、管体が拡管されることにより外周部に配置されたスパイラルフィンと固着することで、伝熱管の軸心方向で隣設されているスパイラルフィン同士が離間するようにして、各スパイラルフィンが伝熱管の軸心方向に複数並設される場合でもよい。   For example, the heat transfer tube may be formed by forming a tube body and a spiral fin from independent members. Specifically, the super high frequency current is passed through the spiral fin and the tube, and the spiral fin disposed on the outer periphery of the tube is continuously welded (welded) so that it is adjacent to the axial center of the heat transfer tube. The plurality of spiral fins may be arranged in parallel in the axial direction of the heat transfer tube so that the spiral fins are separated from each other, and the spiral fins arranged on the outer peripheral portion by expanding the tube It is also possible that a plurality of spiral fins are juxtaposed in the axial direction of the heat transfer tube so that the adjacent spiral fins are separated in the axial direction of the heat transfer tube.

さらに、例えば、図１０に示すように、伝熱管１０が内管１０ａに外管１０ｂを被覆し且つ外管１０ｂに小径部１０ｃを有する原材料から成形される場合でもよい。斯かる構成によれば、転造装置７により、大径部１０ｄにおいては、スパイラルフィン１２が成形される一方、小径部１０ｃにおいては、スパイラルフィン１２が成形されない。これにより、伝熱管１の軸心方向で隣設されているスパイラルフィン１２，１２同士が離間するようにして、スパイラルフィン１２が伝熱管１の軸心方向に複数並設させる。   Further, for example, as shown in FIG. 10, the heat transfer tube 10 may be formed from a raw material that covers the inner tube 10a with the outer tube 10b and has the outer tube 10b with a small diameter portion 10c. According to such a configuration, the spiral fin 12 is formed in the large diameter portion 10d by the rolling device 7, while the spiral fin 12 is not formed in the small diameter portion 10c. Thus, a plurality of spiral fins 12 are juxtaposed in the axial direction of the heat transfer tube 1 such that the adjacent spiral fins 12, 12 are separated from each other in the axial direction of the heat transfer tube 1.

また、上記実施形態に係るチューブ式熱交換器の製造方法においては、切削装置８の支持手段８２が伝熱管１を伝熱管１の軸心方向に移動することで、切削部８１が伝熱管１に対して伝熱管１の軸心方向で相対的に変位する場合を説明したが、斯かる場合に限られず、例えば、切削部８１が伝熱管１の軸心方向に移動する、又は、切削部８１及び支持手段８２の双方が伝熱管１の軸心方向に移動することで、切削部８１が伝熱管１に対して伝熱管１の軸心方向で相対的に変位する場合でもよい。   Moreover, in the manufacturing method of the tube-type heat exchanger which concerns on the said embodiment, the cutting part 81 moves the heat exchanger tube 1 in the axial direction of the heat exchanger tube 1 by the support means 82 of the cutting device 8, and the cutting part 81 is the heat exchanger tube 1. However, the present invention is not limited to such a case. For example, the cutting unit 81 moves in the axial direction of the heat transfer tube 1 or the cutting unit. The cutting part 81 may be relatively displaced in the axial direction of the heat transfer tube 1 relative to the heat transfer tube 1 by moving both 81 and the support means 82 in the axial direction of the heat transfer tube 1.

また、上記実施形態に係るチューブ式熱交換器の製造方法においては、転造装置７の支持手段７２と、切削装置８の支持手段８２とが個別に設けられる場合を説明したが、斯かる場合に限られず、例えば、転造装置７の支持手段７２と、切削装置８の支持手段８２とが共通の支持手段である場合でもよい。   Moreover, in the manufacturing method of the tube-type heat exchanger according to the above embodiment, the case where the support means 72 of the rolling device 7 and the support means 82 of the cutting device 8 are individually provided has been described. For example, the support means 72 of the rolling device 7 and the support means 82 of the cutting device 8 may be a common support means.

１ 伝熱管
２ 装置本体
３ 保持具
７ 転造装置
８ 切削装置
１０ 伝熱管
１１ 管体
１２ スパイラルフィン
３０ 保持具
３１ 挟持部材
３２ 接続部材
１２１ フィン
３１１ 挟持部DESCRIPTION OF SYMBOLS 1 Heat transfer tube 2 Apparatus main body 3 Holder 7 Rolling apparatus 8 Cutting apparatus 10 Heat transfer tube 11 Tubing body 12 Spiral fin 30 Holder 31 Holding member 32 Connection member 121 Fin 311 Holding part

Claims (4)

軸心方向が平行となるように並設される複数の伝熱管と、伝熱管を保持する保持具とを備え、
各伝熱管は、内部に流体を通す管体と、フィンが管体の外周部に沿って螺旋状に配置されて構成されるスパイラルフィンとを備えるチューブ式熱交換器において、
各伝熱管は、スパイラルフィンの端部同士が離間するようにして、複数のスパイラルフィンを軸心方向で並設し、
保持具は、スパイラルフィン間に配置されると共に、管体の外周部に当接するように構成され、
保持具は、各管体を挟持する複数の挟持部材と、挟持部材同士を接続する接続部材とを備え、
挟持部材は、接続部材を係止する凹状の係止部を備え、
接続部材は、挟持部材の下縁部が嵌め込まれる凹状の第１嵌合部と、前記挟持部材の直下に配置される他の挟持部材の上縁部が嵌め込まれる凹状の第２嵌合部と、第１嵌合部と第２嵌合部との間に配置されかつ挟持部材の前記係止部に係止される被係止部と、を備えることを特徴とするチューブ式熱交換器。 A plurality of heat transfer tubes arranged in parallel so that the axial directions are parallel, and a holder for holding the heat transfer tubes,
Each heat transfer tube is a tube heat exchanger including a tube body that allows fluid to pass through and a spiral fin that is configured by arranging fins spirally along the outer periphery of the tube body.
Each heat transfer tube has a plurality of spiral fins arranged in parallel in the axial direction so that the ends of the spiral fins are separated from each other.
The holder is arranged between the spiral fins and is configured to contact the outer peripheral portion of the tubular body ,
The holder includes a plurality of clamping members that clamp each tubular body, and a connection member that connects the clamping members,
The clamping member includes a concave locking portion that locks the connection member,
The connecting member includes a concave first fitting portion into which a lower edge portion of the holding member is fitted, and a concave second fitting portion into which an upper edge portion of another holding member disposed immediately below the holding member is fitted. And a to-be-latched part which is arrange | positioned between the 1st fitting part and the 2nd fitting part, and is latched by the said latching | locking part of a clamping member, The tube type heat exchanger characterized by the above-mentioned . 各伝熱管のスパイラルフィンは、伝熱管の径方向で隣設される他の伝熱管のスパイラルフィンに入り込むように配置される請求項１に記載のチューブ式熱交換器。   The tube-type heat exchanger according to claim 1, wherein the spiral fin of each heat transfer tube is disposed so as to enter the spiral fin of another heat transfer tube adjacent in the radial direction of the heat transfer tube. 挟持部材は、各管体を挟持する挟持部を複数備え、
各挟持部は、各管体の一部を嵌め込むべく凹状に形成される請求項１又は２に記載のチューブ式熱交換器。 The sandwiching member includes a plurality of sandwiching portions that sandwich each tubular body,
Each tube part is a tube type heat exchanger of Claim 1 or 2 formed in concave shape so that a part of each tube may be fitted. 軸心方向が平行となるように並設される複数の伝熱管と、伝熱管を保持する保持具とを備え、各伝熱管は、内部に流体を通す管体と、フィンが管体の外周部に沿って螺旋状に配置されて構成されるスパイラルフィンとを備えるチューブ式熱交換器の製造方法において、
各伝熱管が複数のスパイラルフィンを軸心方向で並設すると共にスパイラルフィンの端部同士が離間するように、各伝熱管のフィンを切削する工程と、
保持具が各伝熱管を保持するように、スパイラルフィン間に保持具を配置し、管体の外周部に保持具を当接させる工程とを備え、
各伝熱管のフィンを切削する際に、伝熱管を支持する支持手段が伝熱管を伝熱管の軸心方向を中心に回転させると共に、フィンを切削する切削部と伝熱管とが伝熱管の軸心方向で相対的に変位すべく、切削部及び支持手段の少なくとも何れか一方が伝熱管の軸心方向で移動することを特徴とするチューブ式熱交換器の製造方法。 A plurality of heat transfer tubes arranged in parallel so that the axial directions are parallel to each other, and a holder for holding the heat transfer tubes, each heat transfer tube includes a tube through which a fluid is passed, and fins are arranged on the outer periphery of the tube In a method for manufacturing a tube heat exchanger comprising a spiral fin configured to be spirally arranged along a section,
Cutting the fins of each heat transfer tube so that each heat transfer tube has a plurality of spiral fins arranged in the axial direction and the ends of the spiral fins are separated from each other;
Arranging the holding tool between the spiral fins so that the holding tool holds each heat transfer tube, and bringing the holding tool into contact with the outer peripheral portion of the tubular body ,
When cutting the fins of the heat transfer tubes, the support means for supporting the heat transfer tubes rotates the heat transfer tubes around the axial direction of the heat transfer tubes, and the cutting section and the heat transfer tubes for cutting the fins are the shafts of the heat transfer tubes. A method for manufacturing a tube heat exchanger, wherein at least one of a cutting part and a support means moves in an axial direction of a heat transfer tube so as to be relatively displaced in a central direction .
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