CN101398268B - 平行流型热交换器 - Google Patents

平行流型热交换器 Download PDF

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CN101398268B
CN101398268B CN2007100714798A CN200710071479A CN101398268B CN 101398268 B CN101398268 B CN 101398268B CN 2007100714798 A CN2007100714798 A CN 2007100714798A CN 200710071479 A CN200710071479 A CN 200710071479A CN 101398268 B CN101398268 B CN 101398268B
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heat exchanger
pipes
flow heat
concurrent
flat
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CN101398268A (zh
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吕伟伟
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Sanhua Hangzhou Micro Channel Heat Exchanger Co Ltd
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Danfoss Sanhua Hangzhou Micro Channel Heat Exchanger 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
    • 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
    • F28D1/05375—Assemblies of conduits connected to common headers, e.g. core type radiators with particular pattern of flow, e.g. change of flow direction

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

Abstract

平行流型热交换器，属于热量交换装置，现有平面型热交换器不能充分利用风量，L型热交换器不利于换热，本实用新型包括一对平行设置的介质集流管、连接于该对介质集流管之间的与该对介质集流管内腔连通的若干扁管以及设置在相邻扁管之间的散热片，介质集流管上固定有两个接管，其特征在于：所述的扁管按照相同的弧度弯曲，所述的散热片随扁管的形状变化，形成起伏的迎风面。本实用新型可使在相同的外型尺寸的情况下，有效地增大换热面积，同时有利于使风扇的风顺利通过热交换器器，从而可提高换热效果；另外，大曲率半径的弯曲，可有效改善材料应力，减少弯曲过程中的翅片倒伏和扁管受损。

Description

平行流型热交换器
技术领域
本发明属于热量交换装置，尤其是一种平行流型热交换器，在空调***中作为蒸发器或者冷凝器。
背景技术
现有技术中的空调***大都包括冷凝器、蒸发器、压缩机及节流装置等部件，其中冷凝器及蒸发器是***的热交换部件，统称热交换器。热交换器的类型有很多，如平行流热交换器。如图1所示，平行流热交换器一般以铝材为主体，包括一对平行设置的集液管2/2’、连接于该对集液管2/2’之间的与该对集液管内腔连通的若干扁管3、位于扁管3之间起散热作用的翅片4。其中一个集液管2上固定有两个接管1/1’，也可以是在两个集液管2/2’上分别设置一个接管。
如图1的虚线方向所示，在制冷工况下，从压缩机出气(排气)端出来的高温高压汽态制冷工质，从接管1进入热交换器，通过扁管3与外部空气进行热交换，最终全部变为有一定过冷度的液态制冷工质，从接管1’流出。
如图1的实线方向所示，在制热工况下，制冷工质的汽液转化与冷凝工况相反，液态制冷工质从接管1’进入到热交换器的扁管3内，在与外部的空气进行热交换过程中，逐渐汽化，最终全部变为汽态过热工质，从接管1进入压缩机的吸气端或者汽液分离器。
现有技术在外观形态上，若干扁管皆呈直线状，因此整个热交换器形成平面状的迎风面(如图2)；也有将若干扁管弯曲成“L”状，由此形成“L”型热交换器，其具有一个平面状的迎风面和一个侧向的换热面(如图3)。但上述两种结构均存在缺点：具有平面状迎风面的热交换器虽然结构紧凑，但在工作过程中，未能充分利用风量，造成一定的能量损失；而由“L”状的扁管形成的热交换器在外型尺寸不变的情况下，虽然传热面积大于同等外型尺寸的平面结构，但由于折角的存在，使得该部分的风场不利于换热，同样降低了热交换器的工作效率。
发明内容
本发明要解决的技术问题和提出的技术任务是克服现有技术存在的平面型热交换器不能充分利用风量以及L型热交换器不利于换热的的缺点，提供一种新的平行流型热交换器。为此，本发明采用以下技术方案：
平行流型热交换器，包括一对平行设置的介质集流管、连接于该对介质集流管之间的与该对介质集流管内腔连通的若干扁管以及设置在相邻扁管之间的翅片，其中一个介质集流管上固定有两个接管，其特征在于：所述的扁管按照相同的弧度两边双向弯曲，所述的翅片随扁管的形状变化，形成起伏的迎风面；所述的扁管弯曲成S形。
作为对上述技术方案的进一步完善和补充，本发明还包括以下附加技术特征：
所述的扁管曲率半径为40～4000mm。
本发明的有益效果是：
通过对平行流型热交换器双向大曲率半径的弯曲，可使在相同的外型尺寸的情况下，有效地增大换热面积，同时有利于使风扇的风顺利通过热交换器，从而可提高换热效果；另外，大曲率半径的弯曲，可有效改善材料应力，减少弯曲过程中的翅片倒伏和扁管受损。
附图说明
图1：现有技术中的平行流型热交换器示意图；
图2：图1的仰视图；
图3：现有技术的L形热交换器仰视图；
图4：本发明的热交换器的正视图；
图5：本发明的热交换器的仰视图。
图中：
1/1’-接管；2-/2’-集液管；3-扁管；4-翅片；5-迎风面；6-风扇；A-风扇尺寸；B-热交换器外型尺寸。
具体实施方式
下面结合附图，具体说明本发明的实施方式：
如图4所示的热交换器包括一对平行设置的介质集流管2/2’、连接于该对介质集流管之间的与该对介质集流管内腔连通的若干扁管3以及设置在相邻扁管之间的翅片4，其中一个介质集流管2上固定有两个接管1/1’，从而使得介质可以按照“接管1→集液管2→扁管3→集液管2’→扁管3→集流管2→出口管1’”的顺序或者按照“出口管1’→集流管2→扁管3→集液管2’→扁管3→集液管2→接管1”流经热交换器进行热量交换。
将冷凝器的集液管2/2’、翅片4和扁管3加工成产品后用弯曲装置机进行弯曲：
对所述的冷凝器采用两边双向弯曲，扁管曲率半径为40～4000mm。使冷凝器整体材料除中性面外，均有拉伸和压缩，有效改善材料应力，减少在弯曲过程中的翅片倒伏和扁管受损。
对冷凝器采用两边双向弯曲，使冷凝器在相同尺寸的风扇下，增加了有效的换热面积，取得了更大的换热效果。
对冷凝器采用两边双向弯曲，曲率半径不易太小，这样可使翅片方向和风扇的吸风方向基本一致，减少风阻，有效地使风扇的风顺利通过整个冷凝器，同时避免了L型冷凝器的内折角部未能充分使风扇的风量高速通过而使换热效果减小这一现象。

Claims (2)

1.平行流型热交换器，包括一对平行设置的介质集流管、连接于该对介质集流管之间的与该对介质集流管内腔连通的若干扁管以及设置在相邻扁管之间的翅片，介质集流管上固定有两个接管，其特征在于：所述的扁管按照相同的弧度两边双向弯曲，所述的翅片随扁管的形状变化，形成起伏的迎风面；所述的扁管弯曲成S形。
2.根据权利要求1所述的平行流型热交换器，其特征在于：所述扁管的曲率半径为40～4000mm。
CN2007100714798A 2007-09-29 2007-09-29 平行流型热交换器 Active CN101398268B (zh)

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CN103968610B (zh) * 2013-02-05 2016-07-06 珠海格力电器股份有限公司 空调器及其微通道换热器
CN108917236A (zh) * 2018-07-30 2018-11-30 常州市常蒸热交换器科技有限公司 饮水机用冷凝器

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