KR20080110604A - Procedure for manufacture of a tube for conveyance of a fluid of a heat exchanger, and tube obtained by such procedure - Google Patents

Procedure for manufacture of a tube for conveyance of a fluid of a heat exchanger, and tube obtained by such procedure Download PDF

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KR20080110604A
KR20080110604A KR1020087024294A KR20087024294A KR20080110604A KR 20080110604 A KR20080110604 A KR 20080110604A KR 1020087024294 A KR1020087024294 A KR 1020087024294A KR 20087024294 A KR20087024294 A KR 20087024294A KR 20080110604 A KR20080110604 A KR 20080110604A
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tube
corrugations
manufacturing
metal sheet
tube manufacturing
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KR1020087024294A
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Korean (ko)
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파라시오스 지저스 지메네즈
이즈쿼도 어렐리오 콜롬
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발레오 테르미코 에스.에이.
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Publication of KR20080110604A publication Critical patent/KR20080110604A/en

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    • 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
    • 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0803—Making tubes with welded or soldered seams the tubes having a special shape, e.g. polygonal tubes
    • 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
    • B21C37/156—Making tubes with wall irregularities
    • B21C37/158—Protrusions, e.g. dimples
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/11—Manufacture or assembly of EGR systems; Materials or coatings specially adapted for EGR systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0391—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits a single plate being bent to form one or more conduits
    • 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
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • 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
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F28F1/424—Means comprising outside portions integral with inside portions
    • F28F1/426—Means comprising outside portions integral with inside portions the outside portions and the inside portions forming parts of complementary shape, e.g. concave and convex
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/10—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes made by hydroforming

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

The present invention concerns a procedure for manufacture of a tube for conveyance of a fluid of a heat exchanger, such tube being of the type presenting a substantially rectangular cross-section, formed by two opposed walls of greater width and two rounded walls of lesser width, said procedure consists of realising the following stages: a) Commencing from a metal sheet (2), realisation of a plurality of corrugations (3) by employing an embossing process; b) Realisation of the bending of sheet (2) by employing a process of embossing or forming; and c) Proceeding to weld the free edges (4) to close tube, considering the tolerances required. ® KIPO & WIPO 2009

Description

열교환기의 유체를 이송하기 위한 튜브 제조 방법 및 그러한 방법에 의해 얻어진 튜브{PROCEDURE FOR MANUFACTURE OF A TUBE FOR CONVEYANCE OF A FLUID OF A HEAT EXCHANGER, AND TUBE OBTAINED BY SUCH PROCEDURE}TECHNICAL FIELD OF THE INVENTION A tube manufacturing method for conveying a fluid in a heat exchanger and a tube obtained by such a method.

본 발명은 열교환기의 유체를 이송하기 위한 튜브 제조 방법에 관한 것이다. 본 발명은 또한 그러한 방법에 의해 얻어진 튜브에 관한 것이다. The present invention relates to a method for producing a tube for transferring a fluid of a heat exchanger. The invention also relates to a tube obtained by such a method.

본 발명은 특히 엔진으로부터의 배기 가스를 재순환하는 교환기(EGRC)에 적용될 수 있다. The invention is particularly applicable to an exchanger (EGRC) for recycling exhaust gases from an engine.

가스를 냉각하는 몇몇의 열교환기, 예컨대 폭발 엔진의 진입구를 향한 배기 가스의 재순환 시스템(이 시스템을 "배기 가스 재순환" 또는 EGR이라 부름)에 채용되는 열교환기에서, 가스는 이 가스의 통과를 위한 튜브 외측에서 하우징 내에서 순환되는 냉각 유체와의 열교환에 의해 냉각되는 순환 중에 케이싱 내에 수용된 평행한 튜브 뱅크를 통해 순환한다. In some heat exchangers that cool the gas, for example heat exchangers employed in the exhaust gas recirculation system towards the inlet of the explosion engine (this system is referred to as "exhaust gas recirculation" or EGR), the gas is used for passage of this gas. It circulates through parallel tube banks housed in the casing during circulation cooled by heat exchange with cooling fluid circulated in the housing outside the tube.

직사각형 단면의 열교환기의 하우징 내에 최적화된 방식으로 끼워지기에 적절한 직사각형 단면의 가스 튜브가 공지되어 있다. 그러한 직사각형 단면의 튜브는 원형 튜브로부터 제조되고, 또한 열교환기의 열적 성능을 개선하기 위한 목적을 갖는 파형부를 제공할 수도 있다. 그러나, 일반적으로 그러한 파형부는 튜브의 반 경, 즉 튜브의 형성되지 않은 원형 단부에 도달하는 일 없이 튜브의 길이를 따라 연장된다. Gas tubes of rectangular cross section suitable for fitting in an optimized manner in a housing of a rectangular cross section heat exchanger are known. Such rectangular cross section tubes are made from round tubes and may also provide corrugations with the purpose of improving the thermal performance of the heat exchanger. In general, however, such corrugations extend along the length of the tube without reaching the radius of the tube, ie, the unformed circular end of the tube.

현재, 튜브의 길이를 따라 그 전체에서 파형부를 기계 가공할 수 있는 것으로 알려진 유일한 방법은 하이드로포밍(hydroforming) 공정에 의한 것이다. Currently, the only method known to be able to machine corrugations throughout the length of the tube is by a hydroforming process.

이 타입의 튜브 제조 방법은 이하와 같다. The tube manufacturing method of this type is as follows.

처음에, 시작 재료는 벤딩 및 용접된 시트로부터 시작하여 얻어진 원형 단면의 평활한 튜브이다. 이어서, 이 튜브는 2 단계, 즉 먼저 튜브의 형상이 원형 단면으로부터 실질적으로 직사각형 단면이 되도록 계속되고, 이어서 파형부가 실현되는 것을 포함하는 하이드로포밍 공정을 받는다. 마지막으로, 필요에 따라, 튜브 단부의 절단과 디버링(deburring)이 실현된다. Initially, the starting material is a smooth tube of circular cross section obtained starting from the bent and welded sheet. This tube is then subjected to a hydroforming process which involves two steps, first of which the shape of the tube is from a circular cross section to a substantially rectangular cross section, and then the corrugation section is realized. Finally, if necessary, cutting and deburring of the tube ends are realized.

그럼에도 불구하고, 그러한 튜브 제조 방법은 이하의 단점을 제공한다. Nevertheless, such a tube manufacturing method provides the following disadvantages.

-제조 방법의 비용이 다양한 공정의 조합으로 인해 높다. 한편, 원재료로서 사용되는 벤딩 및 용접된 튜브가 이미 가격 추가를 내포한다. 다른 한편으로, 하이드로포밍 공정은 느린 사이클 속도로 작동하고, 연속적인 공정이 아니다. 하이드로포밍 공정은 또한 기계류와 공구가 상당한 비용이라면 큰 투자를 필요로 한다. The cost of the manufacturing method is high due to the combination of various processes. On the other hand, bent and welded tubes used as raw materials already involve price additions. On the other hand, the hydroforming process operates at a slow cycle rate and is not a continuous process. Hydroforming processes also require large investments if machinery and tools are significant costs.

-제조 방법으로부터 생기는 폐기물 수준이 높은데, 그 이유는 하이드로포밍 공정 중에, 하이드로포밍 기계의 실린더가 고압 액체를 밀봉 및 분사하도록 위치되는 튜브의 단부에 원형 단면 영역을 가질 필요가 있기 때문이다. 그 결과, 그러한 원형 단면 영역은 최종 형상의 튜브를 얻기 위해 제거되어야 한다. The waste level resulting from the manufacturing method is high because during the hydroforming process, the cylinder of the hydroforming machine needs to have a circular cross-sectional area at the end of the tube where it is positioned to seal and spray the high pressure liquid. As a result, such circular cross-sectional areas must be removed to obtain a tube of final shape.

본 발명에 따른 열교환기의 유체를 이송하기 위한 튜브 제조 방법의 목적은 당업계에 공지된 방법에 의해 제공된 단점을 극복하여, 비용이 낮은 튜브 제조 방법을 제공하는 것이다. The object of a tube manufacturing method for conveying a fluid of a heat exchanger according to the present invention is to overcome the disadvantages provided by methods known in the art, to provide a low cost tube manufacturing method.

본 발명의 주제는 열교환기의 유체를 이송하는 튜브 제조 방법으로서, 그러한 튜브는 큰 폭의 2개의 대향 벽과 보다 작은 폭의 2개의 라운드형 벽에 의해 형성되는 거의 직사각형 단면을 제공하는 타입이고, 상기 튜브 제조 방법은, The subject of the invention is a method of producing a tube for transporting fluid in a heat exchanger, the tube being of a type that provides a substantially rectangular cross section formed by two large opposite walls and two smaller rounded walls, The tube manufacturing method,

a) 금속 시트로부터 시작하고, 엠보싱 공정을 채용하여 복수 개의 파형부를 실현하는 단계와,a) starting from a metal sheet and employing an embossing process to realize a plurality of corrugations;

b) 엠보싱 또는 성형 공정을 채용하여 시트의 벤딩을 실현하는 단계와,b) employing an embossing or forming process to realize sheet bending,

c) 필요한 공차를 고려하면서 튜브를 폐쇄하도록 자유 에지의 용접을 진행하는 단계를 포함하는 것을 특징으로 한다. c) welding the free edge to close the tube while taking into account the required tolerances.

이 방식에서, 제조 방법은 3개의 상이한 기법, 즉 파형부 엠보싱, 벤딩 및 용접의 하나의 제조 라인에서의 조합을 수반하면서 달성된다. In this way, the manufacturing method is achieved involving a combination in three different techniques, one manufacturing line of corrugation embossing, bending and welding.

선택적으로, 단계 c)에 이어서, 필요에 따라, 튜브의 말단부를 절단하는 단계가 계속된다. Optionally, following step c), the step of cutting the end of the tube is continued as necessary.

본 발명의 방법을 통해 얻어지는 주요한 이점은 다음과 같다. The main advantages obtained through the method of the present invention are as follows.

-공정이 연속적이고, 이에 따라 달성되는 사이클 속도가 튜브를 하이드로포밍하는 공정을 채용하여 얻어지는 것보다 높기 때문에 제조 비용이 절감됨.-The manufacturing cost is reduced because the process is continuous and the cycle rate thus achieved is higher than that obtained by employing the process of hydroforming the tube.

-이 공정을 채용하면, 많은 양의 재료를 버릴 필요가 없어, 적어도 14 mm를 필요로 하는 하이드로포밍의 경우에서 생기는 것과 달리 용접점의 실행을 위해 각 측부에서 단 1 mm의 제거로 충분하기 때문에, 폐기물이 감소됨. This process eliminates the need to discard large amounts of material, since only 1 mm of removal from each side is sufficient for the performance of the welding point, unlike in the case of hydroforming requiring at least 14 mm. , Waste is reduced.

-보다 높은 생산 능력이 달성됨.Higher production capacity is achieved.

-하이드로포밍에 의해 실현되는 튜브에 채용되는 것보다 기계류와 공구가 더 저렴하기 때문에 투자의 수준이 낮아짐.Lower investment because machinery and tools are cheaper than those employed in tubes realized by hydroforming.

-산업 설비 공간이 적게 요구됨.-Less industrial equipment space required.

바람직하게는, 파형부는 일단 제조되면 튜브의 보다 큰 폭의 대향 벽에 대응하는 금속 시트의 영역에서 보다 작은 폭의 라운드형 벽의 일부에 도달하면서 엠보싱 가공된다. Preferably, the corrugations are embossed once reaching a portion of the smaller width rounded wall in the region of the metal sheet that corresponds to the larger width opposed wall of the tube.

본 발명의 일실시예에 따르면, 파형부는 튜브의 축선에 대해 실질적으로 대각선인 방향으로 상기 보다 큰 폭의 벽을 횡방향으로 가로지르는 복수 개의 상호 평행한 선형 홈에 의해 형성된다. According to one embodiment of the invention, the corrugations are formed by a plurality of mutually parallel linear grooves transversely of the greater width wall in a direction substantially diagonal to the axis of the tube.

유리하게는, 그러한 파형부는 말단부에 도달하면서 또는 말단부를 피하면서 금속 시트를 따라 엠보싱 가공된다. Advantageously, such corrugations are embossed along the metal sheet while reaching or avoiding the distal end.

바람직하게는, 그러한 파형부는 벤딩 라인에 대해 상호 등거리에 있지 않고 비대칭적인 방식으로 분포되어, 하중의 손실을 개선하는 목적을 갖는다. Preferably, such corrugations are distributed in an asymmetrical manner, without being equidistant with respect to the bending line, with the aim of improving the loss of load.

그러한 경우에, 파형부는 일단 금속 시트가 벤딩되면 하나의 벽의 파형부가 대향된 벽의 파형부를 기준으로 교차된 방식으로 배치되어, 관련 파형부들의 각 쌍이 거의 X 형태의 돌기를 형성하도록 동일한 경사 각도를 유지하면서 분포된다. In such a case, the corrugations are arranged in such a way that once the metal sheet is bent, the corrugations of one wall are crossed relative to the corrugations of the opposing walls, such that each pair of corrugated corrugations forms an almost X-shaped projection. While maintaining the distribution.

바람직하게는, 금속 시트는 종방향 중심선을 따라 절반이 벤딩된다. Preferably, the metal sheet is bent in half along the longitudinal center line.

다른 양태에 따르면, 본 발명은 전술한 제조 방법을 채용하여 얻어지는 타입의 열교환기의 유체 이송을 위한 튜브에 관한 것이다. According to another aspect, the present invention relates to a tube for fluid transfer of a heat exchanger of the type obtained by employing the above-mentioned manufacturing method.

전술한 설명을 용이하게 하는 목적으로 몇몇의 도면이 첨부되어 있는데, 도면에서는, 본 발명의 열교환기의 유체를 이송하기 위한 튜브 제조 방법의 실제 실시예의 경우가 개략적이고 비제한적인 예로서만 나타나 있다. Several drawings are attached for the purpose of facilitating the foregoing description, in which only a schematic, non-limiting example is shown of a practical embodiment of a tube manufacturing method for conveying fluid of a heat exchanger of the present invention. .

도 1은 시작 재료로서의 금속 시트를 도시한다. 1 shows a metal sheet as starting material.

도 2는 본 방법 중 단계 a)에 따라 수행된 파형부를 갖는 금속 시트를 도시한다. 2 shows a metal sheet with a corrugation portion performed according to step a) of the method.

도 3은 본 방법 중 단계 b)에 따라 시트를 벤딩하는 공정을 도시한다.3 shows a process for bending a sheet according to step b) of the method.

도 4는 단계 c)와 d)가 실현된 다음에 완성된 튜브를 도시한다. 4 shows the completed tube after steps c) and d) have been realized.

본 발명에 따른 열교환기의 유체를 이송하는 튜브(1)의 제조 방법은 이하의 단계들로 이루어진다. The manufacturing method of the tube 1 for conveying the fluid of the heat exchanger according to the present invention consists of the following steps.

처음에, 시작 재료는 대략 60 mm의 금속 시트(2)이다(도 1 참조). Initially, the starting material is a metal sheet 2 of approximately 60 mm (see FIG. 1).

이어서, 금속 시트(2)를 따라 엠보싱 공정을 채용하고 종방향 중앙 영역(6)에 이르는 것을 피하면서 복수 개의 파형부(3)의 실현이 계속된다(도 2 참조). 그러한 파형부(3)는 금속 시트(2)를 따라 그 전체 길이에서, 또는 말단부(5)를 피하면서 엠보싱 가공될 수 있다. Subsequently, the realization of the plural corrugated portions 3 is continued while employing an embossing process along the metal sheet 2 and avoiding reaching the longitudinal center region 6 (see FIG. 2). Such corrugations 3 can be embossed along their metal sheets 2 at their full length or avoiding the distal ends 5.

다음에, 엠보싱 또는 성형 공정을 채용하여 종방향 중심선을 따라 시트(2)의 절반 벤딩의 실현이 계속된다. 도 3에는 튜브(1)를 폐쇄할 수 있도록 시트(2)를 벤딩하는 여러 단계가 도시되어 있다. Next, the realization of half bending of the sheet 2 along the longitudinal center line is continued by employing an embossing or forming process. 3 shows the various steps of bending the sheet 2 to close the tube 1.

마지막으로, 필요한 공차를 고려하여 튜브(1)를 폐쇄하도록 자유 에지(4)의 용접이 계속되고, 필요에 따라 공차를 달성하도록 튜브(1)의 말단부(5)의 절단이 계속된다.Finally, welding of the free edge 4 is continued to close the tube 1 in view of the required tolerances, and cutting of the distal end 5 of the tube 1 is continued to achieve the tolerances as necessary.

첨부한 도면에서는 대각선 방향으로 배향된 평행선 형태의 파형부 패턴을 관찰할 수 있지만, 열교환기의 특성과 냉각될 유체의 타입에 적절한 임의의 다른 타입의 패턴을 적용하는 것이 가능하다.In the accompanying drawings, it is possible to observe the wave pattern in the form of parallel lines oriented in the diagonal direction, but it is possible to apply any other type of pattern suitable for the characteristics of the heat exchanger and the type of fluid to be cooled.

본 발명의 방법은, 한편으로는 시트를 둥근 튜브로 성형하는 종래의 작업을 실현하는 것이 불필요하고, 다른 한편으로는 전체적으로 연속적인 방법이 달성되기 때문에, 제조 비용의 절감을 제공한다. The method of the present invention, on the one hand, does not require realizing the conventional operation of forming the sheet into a round tube, and on the other hand, it provides a reduction in the manufacturing cost since a totally continuous method is achieved.

Claims (10)

열교환기의 유체를 이송하는 튜브(1)의 제조 방법으로서, 상기 튜브(1)는 큰 폭의 2개의 대향 벽과 보다 작은 폭의 2개의 라운드형 벽에 의해 형성되는 거의 직사각형 단면을 제공하는 튜브 제조 방법에 있어서, A method of making a tube (1) for transporting a fluid of a heat exchanger, the tube (1) having a tube having a substantially rectangular cross section formed by two large opposite walls and two smaller rounded walls. In the manufacturing method, a) 금속 시트(2)로부터 시작하고, 엠보싱 공정을 채용하여 복수 개의 파형부(3)를 실현하는 단계와,a) starting from the metal sheet 2 and employing an embossing process to realize the plurality of corrugations 3; b) 엠보싱 또는 성형 공정을 채용하여 시트(2)의 벤딩을 실현하는 단계와,b) employing an embossing or forming process to realize bending of the sheet 2, c) 필요 공차를 고려하여 튜브(1)를 폐쇄하도록 자유 에지(4)의 용접을 진행하는 단계를 포함하는 것을 특징으로 하는 c) welding the free edge 4 to close the tube 1 in view of the required tolerances. 튜브 제조 방법. Tube manufacturing method. 제 1 항에 있어서, The method of claim 1, 상기 단계 c)에 이어서, 튜브(1)의 말단부를 절단하는 단계가 진행되는 것을 특징으로 하는 Subsequent to step c), the step of cutting the distal end of the tube 1 is carried out. 튜브 제조 방법. Tube manufacturing method. 제 1 항 또는 제 2 항에 있어서, The method according to claim 1 or 2, 상기 파형부(3)는 일단 제조되면 튜브(1)의 보다 큰 폭의 대향 벽에 대응하는 금속 시트(2)의 영역에서 보다 작은 폭의 라운드형 벽의 일부에 도달하면서 엠 보싱 가공되는 것을 특징으로 하는 The corrugated portion 3 is embossed once reaching a portion of the smaller rounded wall in the region of the metal sheet 2 corresponding to the larger width opposed wall of the tube 1 once produced. By 튜브 제조 방법. Tube manufacturing method. 제 3 항에 있어서, The method of claim 3, wherein 상기 파형부(3)는 튜브의 축선에 대해 실질적으로 사선 방향으로 상기 보다 큰 폭의 벽을 횡방향으로 가로지르는 복수 개의 상호 평행한 홈에 의해 형성되는 것을 특징으로 하는 The corrugated section 3 is characterized in that it is formed by a plurality of mutually parallel grooves transverse to the greater width wall in a substantially oblique direction with respect to the axis of the tube. 튜브 제조 방법. Tube manufacturing method. 제 1 항 내지 제 4 항 중 어느 한 항에 있어서, The method according to any one of claims 1 to 4, 상기 파형부(3)는 말단부에 도달하면서 금속 시트(2)를 따라 엠보싱 가공되는 것을 특징으로 하는 The corrugated section 3 is embossed along the metal sheet 2 while reaching the distal end. 튜브 제조 방법. Tube manufacturing method. 제 1 항 내지 제 4 항 중 어느 한 항에 있어서, The method according to any one of claims 1 to 4, 상기 파형부(3)는 말단부(5)를 피하여 금속 시트(2)를 따라 엠보싱 가공되는 것을 특징으로 하는 The corrugated section 3 is characterized in that it is embossed along the metal sheet 2, avoiding the distal end 5. 튜브 제조 방법. Tube manufacturing method. 제 1 항 내지 제 6 항 중 어느 한 항에 있어서, The method according to any one of claims 1 to 6, 상기 파형부(3)는 벤딩 라인에 대해 상호 등거리에 있지 않고 비대칭적인 방식으로 분포되는 것을 특징으로 하는 The corrugations 3 are characterized in that they are distributed in an asymmetrical manner without being equidistant from each other with respect to the bending line. 튜브 제조 방법. Tube manufacturing method. 제 7 항에 있어서, The method of claim 7, wherein 상기 파형부(3)는 일단 금속 시트(2)가 벤딩되면 하나의 벽의 파형부(3)가 대향된 벽의 파형부를 기준으로 교차된 방식으로 배치되어, 관련 파형부들의 각 쌍이 실질적으로 X 형태의 돌기를 형성하도록 동일한 경사 각도를 유지하면서 분포되는 것을 특징으로 하는 The corrugations 3 are arranged in such a way that, once the metal sheet 2 is bent, the corrugations 3 of one wall intersect with respect to the corrugations of the opposing wall so that each pair of relevant corrugations is substantially X. Characterized in that the distribution while maintaining the same inclination angle to form a projection of the shape 튜브 제조 방법. Tube manufacturing method. 제 1 항 내지 제 8 항 중 어느 한 항에 있어서, The method according to any one of claims 1 to 8, 상기 금속 시트(2)의 벤딩은 종방향 중심선을 따른 중간을 따라 실현되는 것을 특징으로 하는 The bending of the metal sheet 2 is characterized in that it is realized along the middle along the longitudinal centerline 튜브 제조 방법. Tube manufacturing method. 제 1 항 내지 제 9 항 중 어느 한 항에 따른 튜브 제조 방법을 채용하여 얻어지는 Obtained by employing the tube manufacturing method according to any one of claims 1 to 9. 열교환기의 유체 이송용 튜브(1). Tube for fluid transfer of heat exchanger (1).
KR1020087024294A 2006-04-05 2007-04-04 Procedure for manufacture of a tube for conveyance of a fluid of a heat exchanger, and tube obtained by such procedure KR20080110604A (en)

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