CN1033019A - 散热器的制造方法及用该方法制成的空心型材 - Google Patents
散热器的制造方法及用该方法制成的空心型材 Download PDFInfo
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Abstract
本发明涉及制造机动车散热器的方法,该方法包
括将冲成椭圆形截面的,其内至少有一块纵向地向内
延伸并横过椭圆形截面长轴的板(2)的空心型材再成
型,例如在加压的情况下滚压成扁平横截面的管子,
管的两侧平行,再将管焊到冷却鳍片上,并装入散热
器壳体中。用上述方法制作的冲压的轻金属空心型
材(1)大体上为椭圆形截面,其内至少有一块板(2),
它沿型材(1)的纵向延伸并横过型材的椭圆形截面的
长轴。
Description
本发明涉及一种制造散热器的方法,尤其涉及一种制造机动车散热器的方法,以及用这种方法制作的空心型材。
迄今,在欧洲,用普通的黄铜和铜管制成的散热器,特别是用于机动车内燃机的水冷器约占20%,而用铝管制成的散热器约占80%。
由于铝管散热器比用黄铜和铜管制成的散热器热效率高,重量轻,因此,常做成带插入铝管的插入式散热器,或用焊接铝管制成散热器。用铝材制成的插入式散热器的比例大约为50%,用焊接铝管制成的散热器的比例约为30%。
用焊接铝管制成的散热器被专用于需要强冷的内燃机上,如小型卡车发动机和汽车的大功率发动机上。用于这类散热器的焊接管是由金属带材围成一圈,并在其一侧沿纵向压焊而成的。与插入式散热器的圆形管截面相反,这种管子的截面为扁平形,管外侧用Alsi合金包覆。硅层是在围成金属板之前对其滚压时覆盖上的,从而能将焊成的管焊接到水箱和冷却鳍片上。
这种焊好的扁平管,例如由Al、Mg、Si 0.5或Al、Mn合金组成。在高于450℃特别是在607-636℃温度下,用焊剂或在真空下不用焊剂,通过铜焊或硬纤焊,将它们焊在水箱和由相同材料或类似材料制成的冷却鳍片上。
这两种把已焊好的管焊接到鳍片和水箱上的可能性都存在严重问题。用焊剂进行焊接时,由于焊剂释放出有害物质,对周围的污染严重,而且对铝和铁板的腐蚀也很严重。因此,对焊好的散热器必须进行冲洗,以防止日后腐蚀。此外,还必须从空气中除去所产生的焊接烟尘,以防止堆积在机车车身制造场所附近的金属板受到腐蚀。由于这个原因,需对空气进行净化,而净化所需的费用是很高的。不用焊剂进行焊接时,虽然不会产生有害物质,但因为必须在真空中进行焊接,需要相当精确的温度控制,这也使费用高昂。此外,由于真空焊接温度高,在焊接炉内保温时间短,在焊接连接处,容易造成点接触而不是面接触,这就降低了联接处的导热性能。
迄今为止,在具有这种焊接的扁平管的散热器上,通常设置了彼此平行的两根管,每根管的宽度例如为22mm,此宽度指的是管子在扁平截面长轴方向上的外部尺寸。因而冷却效率随外部直径的增加而增加,最好采用一种较宽的扁平管。而且,在散热器的制造过程中,焊接之前,在扁平管侧面还要车出螺纹并压在鳍片上,以便在两个部件之间形成连续的、完整的面接触,然后再在炉内焊接。可是,由于在紧压的过程中扁平管上受到的压力,以及焊接时炉内所达到的温度,该扁平形状的侧面在炉内会出现变形(纵弯曲),因为铝会变软,而且在压力下出现凹陷。尤其在铝管管壁很薄,例如仅为0.4mm时就会出现这种现象。
扁平管和鳍片焊接之后,将按此法而制得的散热器中心部份装入散热器壳体或散热器底部,这种工序在组装成的散热器上不会产生任何应力,可是由于焊接过程中部件变形,很难达到所需要的配合精度。
如果为了提高冷却效率而采用较宽的扁平截面管,这种管子的纵向弯曲和配合精度不够的问题会更为严重。由于焊接过程中管子会出现上述变形,而使生产中废品增多,又因为管上有硅包覆层,因而不能简单地将这些散热器次品报废,这就产生了新问题。
据此,本发明的目的是为了避免上述问题而提供一种散热器、尤其是机动车用散热器的制造方法,以及用这种方法制成的空心型材。借助于这种方法,可以制造出高效的大负载铝散热器。
本发明上述及其它目的是通过下述方法和冲压的金属空心型材料实现的。本发明制造散热器的方法的特征是冲压出空心形、大体为椭圆截面的型材,其内有一块纵向地向内延伸、并横向地处于型材横截面的长轴上的板,然后再加工成横截面为扁平状、两侧平行的管子,最后将扁平管组装在构成散热器中心部分的冷却鳍片上。用上述方法制造的、大体为椭圆形截面的冲压空心金属型材,其特征是型材的内腔至少有一块与其成一体的、沿空心型材纵向朝向延伸的板,该板横向地处于椭圆形截面的长轴上。
按照本发明的方法,不采用焊接管,而由传统的冲压机或类似机械提供冲压的空心型材,型材内至少有一块板,该板有三个作用:第一,在随后的滚压成型工序中,该板能保证形成扁平截面管,其扁平截面的两条宽边彼此准确平行。第二,上述板提高了这种型材的刚性,在滚压或轧制工序中具有较好的稳定性,并且使宽扁平型材具有更高的尺寸稳定性。最后,该板还相当于一个紊流器,当它作为水冷器时,能确保管内的循环水形成紊流,从而获得较低的水流速率和较高的冷却效率。
由于空心型材中有板,管的外部直径可达40mm,从而可用于制作散热器,特别是制作具有高效率的机动车散热器。
根据本发明的具体实施例,这种由铝或铝合金制成的型材具有一层锌或锌基合金包覆层,然后可将这种管子在低于450℃的温度下软焊到冷却鳍片上。与用硬钎焊接已焊成的管相比,本发明的管子尺寸稳定性好,因为在这种温度下,铝材的变形自然减小,这一点正是所希望的。
下面通过对一些具体实施例及附图1-3对本发明作更详细的描述。
图1是本发明的空心型材的第一个实施例,图1A是冲压出的情况,图1B为经滚压后的成形管。
图2为本发明的空心型材的第二个实施例,图2A是冲压出的情况,图2B为经滚压后的成形管。
图3是本发明的空心型材的第三个实施例,图3A是冲压出的情况,图3B为经滚压后的成形管。
附图1表示了用本发明的方法制造的空心型材的具体实施例,该空心型材用作机动车散热器。图1A所示的型材1具有椭圆形截面,它由Al、Mg、Si 0.5或Al、Mn合金制成,其短轴外径,例如为4mm-6mm,两外侧外半径为1.2mm。在空心形材内腔形成两块板2,它们沿型材纵向从一内表面连续地延伸到另一表面,并横向地处于椭圆形横截面长轴上。横板2的厚度大体上等于型材1的壁厚。横板沿横向预先做成弯曲形。如图1B所示,这种弯曲的目的是在轧制图1A的型材1时,能使板2纵向弯曲,以便形成图1B所示的半圆形板5,以加强扁平管3,并使待冷却的水流过时形成紊流。图1B所示的扁平管的短轴方向上的外径可以为0.2mm,两侧外半径保持1.2mm不变。图1A所示的本发明实施例中的空心型材可以有一个宽度,即沿长轴方向上的外部尺寸,使得图1B所示的扁平管有相应的外部尺寸,例如32mm到40mm,从而不必要求尺寸精确,也不需要准确配合,而这种准确配合会受到随后的焊接工序影响。
图2A表示了本发明空心型材1的另一个实施例,型材内腔有一块凸出板2,该板位于型材的内侧,并与其成一整体。凸出板2的高度与图2B中滚压后的扁平管的内高相适应。该措施的目的是借助于内板2的支撑使图2B中的扁平管的两外侧精确地平行。图2B所示的管的短轴方向的外部尺寸可以为4mm-6mm,板2的高为1.6mm,壁厚为0.4mm。
图2B给出了滚压后的扁平管3,该管在短轴方向的外部尺寸为2.4mm,内高1.6mm,宽,即长轴方向的外部尺寸为32mm。在两侧的外半径仍为1.2mm。
图3表示了本发明空心型材1的第三个实施例,该型材有两块板2,它们与型材1的内侧按预定角度成一整体结构,两块板2距空心型材1两侧边的距离相同。其角度应选择成使在如图3B所示的滚压后的扁平管3中,内板2与管的内表面垂直。此外,板2的高度应与图3B的扁平管3的内高相适应。其余尺寸与图2所示的实施例的尺寸一致。由于在图3的实施例中具有两块板2,管子的稳定性更好,同时使流过其内的待冷却介质产生更明显的涡流,即紊流。当在散热器上采用这种形状时,就可使用截面更宽的管子,因而制成的机动车散热器具有非常高的效率。这正是车辆发动机所需要的。
尽管已对本发明的几个优先实施例作了描述,但本领域普遍专业技术人员还可对此结构作一些改型,这些改型都没有超出本发明的构思或权利要求的保护范围,例如:空心型材可以采用其他金属材料制成而不用上面所提到的铝合金,横截面也可为其他形状而不是图中所示的椭圆形。
Claims (8)
1、制造散热器,尤其是机动车散热器的方法,其特征在于冲压出空心形、大体为椭圆截面的型材,其内有一块纵向地向内延伸、并横向地处于型材横截面的长轴上的板,然后再加工成横截面为扁平状、两侧平行的管子,最后将扁平管组装在构成散热器中心部分的冷却鳍片上。
2、根据权利要求1所述的方法,其特征在于空心型材由铝或铝合金制成,然后用滚压或轧制设备再成型,并覆盖一层锌或锌基合金,之后将其焊到冷却鳍片上,将扁平管和冷却鳍片的组合件装入散热器壳体中。
3、根据权利要求2所述的方法,其特征在于将覆盖有锌的扁平管在低于450℃的温度下软钎焊到冷却鳍片上。
4、用权利要求1所述的方法制造的、大体为椭圆形截面的冲压空心金属型材(1),其特征在于型材(1)的内腔至少有一块与其成一体的、沿空心型材(1)纵向朝内延伸的板(2),该板横向地处于椭圆形截面的长轴上。
5、根据权利要求4所述的型材,其特征在于上述板(2)沿型材长轴方向伸入型材的中心。
6、根据权利要求4所述的型材,其特征在于型材有两块板(2),它们彼此之间、以及它们与沿长轴方向的截面两端的距离相同。
7、根据权利要求6所述的型材,其特征在于上述两块板(2)与空心型材(1)成一体,并从型材的一个内表面向另一内表面延伸,它们沿型材(1)的横向呈弯曲形。
8、根据权利要求4、5或6所述的型材,其特征在于上述一块板或两块板(2)与型材(1)的一个内表面为一体,上述一块板或两块板的高度与型材(1)再加工成扁平管(3)之后所要求的内部空间的高度相等。
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DEP3730117.9 | 1987-09-08 | ||
DE3730117A DE3730117C1 (de) | 1987-09-08 | 1987-09-08 | Verfahren zum Herstellen eines Waermetauschers,insbesondere eines Kraftfahrzeugkuehlers und Rohrprofil zur Verwendung bei einem derartigen Verfahren |
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CN1033019A true CN1033019A (zh) | 1989-05-24 |
CN1020870C CN1020870C (zh) | 1993-05-26 |
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CN88107272A Expired - Fee Related CN1020870C (zh) | 1987-09-08 | 1988-09-08 | 制造热交换器的方法及用该方法制成的空心型材 |
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US (1) | US5058266A (zh) |
EP (1) | EP0306899B1 (zh) |
JP (1) | JPH01104427A (zh) |
KR (1) | KR960006994B1 (zh) |
CN (1) | CN1020870C (zh) |
AT (1) | ATE70209T1 (zh) |
BR (1) | BR8804617A (zh) |
CA (1) | CA1313752C (zh) |
DE (2) | DE3730117C1 (zh) |
ES (1) | ES2027359T3 (zh) |
MX (1) | MX169807B (zh) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN100395506C (zh) * | 2004-12-23 | 2008-06-18 | 中国石油化工集团公司 | 一种管壳式换热器 |
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-
1987
- 1987-09-08 DE DE3730117A patent/DE3730117C1/de not_active Expired
-
1988
- 1988-09-06 ES ES198888114538T patent/ES2027359T3/es not_active Expired - Lifetime
- 1988-09-06 DE DE8888114538T patent/DE3866830D1/de not_active Expired - Lifetime
- 1988-09-06 EP EP88114538A patent/EP0306899B1/en not_active Expired - Lifetime
- 1988-09-06 AT AT88114538T patent/ATE70209T1/de not_active IP Right Cessation
- 1988-09-07 CA CA000576630A patent/CA1313752C/en not_active Expired - Fee Related
- 1988-09-08 CN CN88107272A patent/CN1020870C/zh not_active Expired - Fee Related
- 1988-09-08 KR KR1019880011583A patent/KR960006994B1/ko not_active IP Right Cessation
- 1988-09-08 MX MX012957A patent/MX169807B/es unknown
- 1988-09-08 BR BR8804617A patent/BR8804617A/pt not_active IP Right Cessation
- 1988-09-08 JP JP63223661A patent/JPH01104427A/ja active Pending
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1990
- 1990-10-17 US US07/598,792 patent/US5058266A/en not_active Expired - Fee Related
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100395506C (zh) * | 2004-12-23 | 2008-06-18 | 中国石油化工集团公司 | 一种管壳式换热器 |
CN105973054A (zh) * | 2016-03-25 | 2016-09-28 | 深圳市英维克科技股份有限公司 | 换热器芯体 |
CN106239171A (zh) * | 2016-08-30 | 2016-12-21 | 嘉善天晟精密铸件有限公司 | 一种用于散热器生产的加工装置 |
CN106239171B (zh) * | 2016-08-30 | 2018-06-01 | 嘉善天晟精密铸件有限公司 | 一种用于散热器生产的加工装置 |
CN108788627A (zh) * | 2017-05-02 | 2018-11-13 | 南宁市安和机械设备有限公司 | 一种高频焊b型散热管成型工艺 |
CN109737773A (zh) * | 2019-01-09 | 2019-05-10 | 西安交通大学 | 一种多管组合类椭圆型换热管固体散料换热器 |
CN110544803A (zh) * | 2019-06-21 | 2019-12-06 | 宁波利维能储能系统有限公司 | 一种水冷流道的制造方法 |
CN116871837A (zh) * | 2023-09-04 | 2023-10-13 | 中山莱通金属科技有限公司 | 一种低成本平行流散热器用微通道多孔扁管工艺 |
Also Published As
Publication number | Publication date |
---|---|
KR960006994B1 (ko) | 1996-05-27 |
JPH01104427A (ja) | 1989-04-21 |
MX169807B (es) | 1993-07-27 |
EP0306899B1 (en) | 1991-12-11 |
ATE70209T1 (de) | 1991-12-15 |
DE3866830D1 (de) | 1992-01-23 |
EP0306899A1 (en) | 1989-03-15 |
KR890004786A (ko) | 1989-05-10 |
ES2027359T3 (es) | 1992-06-01 |
CA1313752C (en) | 1993-02-23 |
BR8804617A (pt) | 1990-05-01 |
CN1020870C (zh) | 1993-05-26 |
US5058266A (en) | 1991-10-22 |
DE3730117C1 (de) | 1988-06-01 |
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