CN101943535A - 平行流换热器的扁管与翅片结构 - Google Patents
平行流换热器的扁管与翅片结构 Download PDFInfo
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- CN101943535A CN101943535A CN201010298067XA CN201010298067A CN101943535A CN 101943535 A CN101943535 A CN 101943535A CN 201010298067X A CN201010298067X A CN 201010298067XA CN 201010298067 A CN201010298067 A CN 201010298067A CN 101943535 A CN101943535 A CN 101943535A
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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
- 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
- F28D1/04—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 tubular conduits
- F28D1/053—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 tubular conduits the conduits being straight
- F28D1/0535—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 tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
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- 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
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
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- 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
- F28F1/126—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 consisting of zig-zag shaped fins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/02—Streamline-shaped elements
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
本发明公开了一种平行流换热器的扁管与翅片结构,若干扁管插接在两端的集流管上,相邻扁管间设有翅片,所述扁管的横截面呈楔形,对应地相邻扁管间的翅片呈一端窄一端宽的渐变结构。在组装钎焊完成之后,可以使得翅片在横向上保持固定,能有效地避免翅片横向移动而发生脱落;沿着翅片由窄端到宽端,翅片与扁管间的接触面由大到小,两者间的焊点也是由大到小变化,这样在钎焊过程中熔融后的多余焊料可以沿着扁管的楔形斜面顺利排放掉,减少其熔蚀产品的可能;使用过程中,翅片上以及扁管上的冷凝水可以顺着扁管的楔形斜面顺利排放掉,减少其腐蚀产品的可能。
Description
技术领域
本发明涉及一种平行流换热器的部件,具体是涉及一种平行流换热器的扁管与翅片结构。
背景技术
平行流换热器是实现冷热流体间热量传递的设备,广泛应用于暖通空调等领域。平行流换热器一般包括相互平行的两根集流管,两根集流管之间设有若干根大体上平行的散热扁管,相邻扁管间钎焊有散热用翅片。翅片由铝质薄片材料加工而成,多呈波纹状结构,其波峰和波谷的外侧面抵设在扁管的上下两侧面上,最终钎焊固定。现有的散热扁管多是厚度一致的扁平结构,这样由于翅片与扁管只是靠接触的摩擦力,在焊接过程中或焊接后常会发生一些翅片脱落的现象,特别是针对一些大型的换热器,再去粘补固定或二次焊接等都会出现焊接不可靠和产品焊堵较高等缺陷,产品的不良率相对较高,也使得制造成本相应增加。另外在换热器在使用多年后,翅片与扁管的焊点被腐蚀或被震动开裂等也都会使得翅片脱落。这些都会降低整个换热器的换热效率。
发明内容
本发明主要是解决上述现有技术所存在的技术问题,提供了一种平行流换热器的扁管和翅片结构。
本发明的上述技术问题主要是通过下述技术方案得以解决的:一种平行流换热器的扁管与翅片结构,若干扁管插接在两端的集流管上,相邻扁管间设有翅片,所述扁管的横截面呈楔形,对应地相邻扁管间的翅片呈一端窄一端宽的渐变结构,其中翅片的横截面波形满足:
作为优选,通常翅片横截面波形主体的倾斜夹角α很小,甚至为0度,这样翅片的横截面波形就可以近似地满足:L=Rπ+H-2R。
所述横截面呈楔形的扁管中,沿着扁管由窄到宽的渐变方向,微通道孔的横截面由小到大;并且沿着微通道孔横截面的由小到大,扁管的壁厚逐渐增加。
本发明将扁管设计成横截面呈楔形的结构,对应地相邻扁管间的翅片呈一端窄一端宽的结构,在组装钎焊完成之后,可以使得翅片在横向上保持固定,能有效地避免翅片横向移动而发生脱落;沿着翅片由窄端到宽端,翅片与扁管间的接触面由大到小,两者间的焊点也是由大到小变化,这样在钎焊过程中熔融后的多余焊料可以沿着扁管的楔形斜面顺利排放掉,减少其熔蚀产品的可能;使用过程中,翅片上以及扁管上的冷凝水可以顺着扁管的楔形斜面顺利排放掉,减少其腐蚀产品的可能。这些都能保证翅片不会脱落和产品泄漏,保持整个换热器的换热效率,整体加工制造也方便很多,能提高换热器的组装加工的优良率。具有结构简单、设计合理等特点。
附图说明
图1是本发明换热器的一种结构示意图;
图2是本发明扁管与翅片的一种结构示意图;
图3是本发明翅片的一种结构示意图;
图4是本发明翅片横截面波形的一种结构示意图。
具体实施方式
下面通过实施例,并结合附图,对本发明的技术方案作进一步具体的说明。
实施例:参看图1和图2,本发明换热器包括若干插接在两端集流管1上的扁管2,相邻扁管2间设有翅片3,扁管2上的微通道4连通两端的集流管1。其中扁管2的横截面呈楔形,对应地相邻扁管2间的翅片3呈一端窄一端宽的结构,其中翅片的横截面波形满足:
式中,L为翅片横截面波形半个周期的展开长度,R为翅片横截面波形的曲率半径,H为翅片横截面波形的高度,α为翅片横截面波形主体的倾斜夹角。通常地翅片横截面波形主体的倾斜夹角α很小,甚至为0度,这样翅片的横截面波形就可以近似地满足:L=Rπ+H-2R。这样加工成型的翅片整体一致性好,不会出现弯曲或扇形等不良现象。横截面呈楔形的扁管中,沿着扁管由窄到宽的渐变方向,微通道孔的横截面由小到大;并且沿着微通道孔横截面的由小到大,扁管的壁厚逐渐增加,扁管的壁厚逐渐增加满足式中,k为设计的破坏强度值,δ为扁管对应微通道孔的壁厚,d为该微通道孔的直径,σ为材料的强度。在充分考虑散热效率的基础上,又保证了扁管的机械强度。
本发明将扁管设计成横截面呈楔形的结构,对应地相邻扁管间的翅片呈一端窄一端宽的结构,在组装钎焊完成之后,可以使得翅片在横向上保持固定,能有效地避免翅片横向移动而发生脱落;沿着翅片由窄端到宽端,翅片与扁管间的接触面由大到小,两者间的焊点也是由大到小变化,这样在钎焊过程中熔融后的多余焊料可以沿着扁管的楔形斜面顺利排放掉,减少其熔蚀产品的可能;使用过程中,翅片上以及扁管上的冷凝水可以顺着扁管的楔形斜面顺利排放掉,减少其腐蚀产品的可能。这些都能保证翅片不会脱落和产品泄漏,保持整个换热器的换热效率,整体加工制造也方便很多,能提高换热器的组装加工的优良率。
最后,应当指出,以上实施例仅是本发明较有代表性的例子。显然,本发明不限于上述实施例,还可以有许多变形。凡是依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰,均应认为属于本发明的保护范围。
Claims (4)
2.根据权利要求1所述的平行流换热器的扁管与翅片结构,其特征在于所述翅片的横截面波形满足:L=Rπ+H-2R。
3.根据权利要求1所述的平行流换热器的扁管与翅片结构,其特征在于所述横截面呈楔形的扁管中,沿着扁管由窄到宽的渐变方向,微通道孔的横截面由小到大;并且沿着微通道孔横截面的由小到大,扁管的壁厚逐渐增加。
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102607313A (zh) * | 2012-03-08 | 2012-07-25 | 双良节能系统股份有限公司 | 直接空冷凝汽器翅片管 |
CN102607312A (zh) * | 2012-03-08 | 2012-07-25 | 双良节能系统股份有限公司 | 直接空冷凝汽器翅片 |
CN102607311A (zh) * | 2012-03-08 | 2012-07-25 | 双良节能系统股份有限公司 | 直接空冷凝汽器换热基管 |
CN107664458A (zh) * | 2017-10-10 | 2018-02-06 | 季永东 | 平行流换热器的扁管与翅片结构 |
CN107726884A (zh) * | 2017-09-19 | 2018-02-23 | 东莞市丰瑞德温控技术有限公司 | 倾斜翅片式平行流换热器及其制作工艺 |
CN112444146A (zh) * | 2019-08-29 | 2021-03-05 | 青岛海信日立空调系统有限公司 | 一种微通道换热器及空调 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102607313A (zh) * | 2012-03-08 | 2012-07-25 | 双良节能系统股份有限公司 | 直接空冷凝汽器翅片管 |
CN102607312A (zh) * | 2012-03-08 | 2012-07-25 | 双良节能系统股份有限公司 | 直接空冷凝汽器翅片 |
CN102607311A (zh) * | 2012-03-08 | 2012-07-25 | 双良节能系统股份有限公司 | 直接空冷凝汽器换热基管 |
CN107726884A (zh) * | 2017-09-19 | 2018-02-23 | 东莞市丰瑞德温控技术有限公司 | 倾斜翅片式平行流换热器及其制作工艺 |
CN107664458A (zh) * | 2017-10-10 | 2018-02-06 | 季永东 | 平行流换热器的扁管与翅片结构 |
CN112444146A (zh) * | 2019-08-29 | 2021-03-05 | 青岛海信日立空调系统有限公司 | 一种微通道换热器及空调 |
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