CN101952630A - 基于铝箔的软管 - Google Patents

基于铝箔的软管 Download PDF

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CN101952630A
CN101952630A CN2008801189259A CN200880118925A CN101952630A CN 101952630 A CN101952630 A CN 101952630A CN 2008801189259 A CN2008801189259 A CN 2008801189259A CN 200880118925 A CN200880118925 A CN 200880118925A CN 101952630 A CN101952630 A CN 101952630A
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joining portion
metal
aforementioned arbitrary
tubular layer
layer
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尼基尔·巴克西
保罗·艾伦·格斯
尤金·A·迪亚内蒂
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Parker Hannifin Corp
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    • F16L11/00—Hoses, i.e. flexible pipes
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    • F16L11/085—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more braided layers
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    • B21C37/08—Making tubes with welded or soldered seams
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Abstract

一种用于输送流体的超低渗透性流体构件(例如，软管、管等)，该流体构件具有金属蒸气阻挡层(22)，该金属蒸气阻挡层(22)围绕内管(14)而形成。金属蒸气阻挡层(22)由一个或多个具有边缘部分(44)的金属带(40a，40b)形成，该边缘部分(44)被结合以密封蒸气阻挡层(22)，从而防止蒸气渗透。

Description

基于铝箔的软管
相关技术的交叉引用
本申请要求于2007年11月7日递交的美国临时申请No.60/986,106的权益，该申请通过引用包含于本文中。
技术领域
本发明总体涉及软管，更具体地涉及超低渗透性软管。
背景技术
低渗透性软管常常用于一些系统中以消除或减少蒸气和/或气体的逸出和/或渗透。例如，这些软管可用于制冷系统中以防止制冷剂蒸气从系统泄漏到环境中。这些软管也常见于燃料系统中，用于防止燃料蒸气逸出到环境中。
这些软管的另一种应用是与加热/供暖系统相连，以供应水(或其它流体)并使其从一个或多个热交换器中回流。在这些应用中，低渗透性软管用于防止氧进入加热系统，这会导致诸如泵和阀等的各部件的腐蚀。
低渗透性软管通常包括用于承载流体的内管和围绕内管的蒸气阻挡层。通常其它各种层可围绕所述蒸气阻挡层，例如编织物、外管、外皮或外套等等。
美国专利No.6,074,717公开了一种软管，该软管包括作为蒸气阻挡层的金属箔。此专利描述了一种柔性软管，该柔性软管包括：内管；铝蒸气阻挡层，该铝蒸气阻挡层由以重叠的方式包裹在内管周围的铝箔形成；以及外管，该外管围绕铝阻挡层。铝阻挡层既结合于内管，又结合于外管。虽然这种设计可提供一种阻碍管和/或铝层层离的软管，但是形成阻挡层的被包裹的铝不提供连续密封的阻挡层。
发明内容
本发明的至少一种实施方式提供一种用于输送流体的软管构件，该软管构件包括：第一管状层；金属蒸气阻挡层，该金属蒸气阻挡层由围绕第一管状层的至少一个金属带形成；以及第二管状层，该第二管状层围绕金属管状层，其中，该至少一个金属带具有边缘部分，该边缘部分连结在一起以形成至少一个接合部，且其中所述至少一个接合部被折叠在金属带的与接合部相邻的部分上。
本发明的至少一种实施方式提供一种制造所述软管的方法，该方法包括：提供形成用于流体流动的管道的第一管状层，利用围绕第一管状层的至少一个金属带形成金属阻挡层，该金属阻挡层具有沿软管的纵向伸展、沿径向向外延伸的至少一个接合部，该至少一个接合部被折叠在金属带的与接合部相邻的部分上，以及提供围绕所述金属阻挡层的第二管状层。
本发明的至少一种实施方式提供一种用于输送流体的软管构件，该软管构件包括：第一管状层；围绕第一管状层的金属蒸气阻挡层，该金属蒸气阻挡层形成为金属管，且具有从金属管沿径向向外延伸的至少一个纵向接合部，该至少一个纵向接合部被折叠在金属管的与纵向接合部相邻的部分上；以及围绕管状金属蒸气阻挡层的第二管状层。
结合附图，从以下详细描述中可显见本发明的其它特性。
附图说明
图1是根据本发明的示例性流体构件的切开立体图；
图2是根据本发明的另一示例性流体构件的切开立体图；
图3是图1的流体构件处于部分形成的状态的切开立体图；
图4是沿图1中的线4-4所取的横截面视图；
图5是可选的实施方式的沿图1中的线4-4所取的横截面视图。
具体实施方式
详细地结合附图，首先是图1和图2，根据本发明的用于输送流体的流体构件总体由附图标记10表示。流体管道构件10——其在示出的实施方式中是软管(但也可以是管材，管道等)的形式——包括第一管状层14，该第一管状层14围绕内部通道18，流体能够流过所述内部通道18。金属蒸气阻挡层22围绕第一管状层14。第一管状层14可由任何合适的材料制成，例如由促进金属蒸气阻挡层22的结合的弹性体制成，下文将详细说明。
金属蒸气阻挡层22可由任何合适的金属制成，例如由铝制成。如在下文中将更详细地描述的，金属蒸气阻挡层22由至少一个形成为围绕第一管状层14并且例如通过焊接而密封的金属带形成，以便形成基本连续密封的蒸气阻挡层。第二管状层26围绕金属蒸气阻挡层22，在该第二管状层26后有用于增强的编织物层30(聚酯线/金属线，凯夫拉尔(Kevlar)，或其它任何合适的编织物)以及外皮34。第一管状层14和/或第二管状层26能够被结合于金属蒸气阻挡层22上。如图2所示，软管10’还可包括附加层，例如内部管状层24，该内部管状层24由复合材料或其它合适的材料制成。在示出的层之间或除了示出的层之外还能够设置其它层，而不脱离本发明的范围。
下面转向图3，图1的软管10示出为处于部分形成的状态，其中金属蒸气阻挡层22围绕第一管状层14而形成。虽然下文的描述结合了图1的软管10，但是应当意识到其对图2所示软管同样适用。
在图3的实施方式中，金属蒸气阻挡层22大体为管状，且由一对金属带40a和40b形成，该对金属带40a和40b被压、轧制、或是制成为与第一管状层14的外表面或根据情况可以是其它层的外表面相一致。该金属带40a和40b例如可以是铝箔，且可预制成合适的形状且被应用成围绕第一管状层14，或者可在应用于第一管状层14的过程中形成为围绕第一管状层14。
每个金属带40a和40b具有相对的边缘部分44，该边缘部分44相对于软管10的纵向轴线大致沿径向向外延伸。每一个金属带40a和40b的相对的边缘部分与另一带的相应的相对的边缘部分44重叠，以便形成一对接合部48，该对接合部48大致沿直径相对，但根据需要能够设置在阻挡层22的圆周的其它位置处。
接合部48通常被结合在一起，以便将金属带40a和40b密封在一起以形成连续、密封的阻挡层。虽然仅折叠接合部48(例如，将接合部折一半、将接合部卷边等等)能够实现各个带40a和40b之间合适地结合，但是沿径向向外延伸的接合部48很适于由合适的焊接设备进行焊接，下文将进行描述。
如图3所示，沿径向向外延伸的接合部48能够很容易地通过超声波焊接设备54将带40a和40b结合在一起。通过焊接接合部48，使金属蒸气阻挡层22围绕着第一层管状层14的圆周被有效地密封。接合部48能够以其它方式被结合，例如利用合适的粘合剂或通过其它合适的焊接工艺而被结合。
在接合部48被形成和/或结合后，每个沿径向延伸的接合部48被随后折叠在金属带40a或40b的与各自相应的接合部48相邻的部分52上。这样，接合部48基本平坦地靠在金属蒸气阻挡层上，并沿着该金属蒸气阻挡层的管状轮廓。
例如，结合图4，图4中是软管10的横截面，接合部48显示为处于折叠构型。在此实施方式中，接合部48沿共同的方向(例如顺时针方向)延伸，并且被折叠在金属带40a和40b的与相应的接合部48相邻的部分52上。在可选的布置中，如图5所示，接合部48沿相反的方向延伸。为清晰起见，图4和图5中的接合部48与金属带40a和40b的相邻的部分52间隔开，但是，在实践中通常会与部分52接触。
在某些应用中，会需要将接合部48结合至金属带40a和/或40b的与接合部48相邻的部分52上。因此，可在折叠接合部48前将合适的结合剂60(图3)，例如粘合剂，施加于接合部48和/或金属带40a和40b的相邻的部分52上。可选的，可在折叠后将接合部48超声波焊接至金属阻挡层22上。将接合部48结合于金属带40a和/或40b能够形成更耐用的软管10，并能防止从软管10的端面的可能的泄漏，从而确保长期性能。
一旦金属蒸气阻挡层22和第二管状层26就位时，金属蒸气阻挡层22就能够被结合到第一管状层14和/或第二管状层26上。在这方面，围绕金属蒸气阻挡层22的弹性体层——该弹性层可以是乙烯丙烯二烯单体(EPDM)橡胶或其它合适的材料——可与添加剂混合以便在随后的诸如通过硫化的弹性体层的固化过程中促进与金属蒸气阻挡层材料的结合。
上文描述的流体构件尤其适合商用和机动车制冷系统，以及例如在农业和非公路车辆中出现的空调系统。这种系统的例子包括：高压和低压R410制冷剂或等同物的系统(例如住宅应用)，高压和低压R134a制冷剂或等同物的系统(例如移动式应用)，和/或高压和低压R477制冷剂或等同物的系统(例如移动式应用)。所述流体构件也能够用于包括其它常规和未来的制冷系统在内的多种其它系统。
虽然已相对于某种或某些优选的实施方式显示和说明了本发明，但是，明显地，本领域技术人员阅读和理解本说明书和附图时，能够进行等同的变型和改进。特别是对于上文描述的元件(部件，组件，装置，成分等)所执行的各种功能，除非另有指出，用以描述这些元件的术语(包括提及的“装置”)用于和执行描述的元件的具体功能(即，在功能上相当)的任何元件对应，即使与执行在此描述的本发明的一个或多个示例实施方式的功能的公开的结构在结构上不相同也是如此。此外，虽然在上文中已相对于仅仅一个或多个示出的实施方式描述了本发明的特殊特征，但是，在需要时和对任何给定或特殊的应用有利时，可将此特征与其它实施方式的一个或多个其它特征进行组合。

Claims (23)

1.一种用于输送流体的软管构件，包括：
第一管状层；
金属蒸气阻挡层，其由围绕所述第一管状层的至少一个金属带形成；以及
第二管状层，其围绕所述金属蒸气阻挡层；
其中，所述至少一个金属带具有边缘部分，所述边缘部分连结在一起以形成至少一个接合部，且其中，所述至少一个接合部被折叠在所述金属带的与接合部相邻的部分上。
2.根据前述任一权利要求所述的软管构件，其中，所述至少一个金属带包括一对分别围绕第一管状层的各个半部的金属带，且其中，每个所述金属带的相对的边缘部分与另一金属带的相应的相对的边缘部分重叠以形成一对接合部。
3.根据前述任一权利要求所述的软管构件，其中，所述至少一个接合部被焊接。
4.根据前述任一权利要求所述的软管构件，其中，所述至少一个接合部被超声波焊接。
5.根据前述任一权利要求所述的软管构件，其中，所述接合部的至少一部分被结合到所述金属带的与所述接合部相邻的部分上。
6.根据前述任一权利要求所述的软管构件，其中，所述金属蒸气阻挡层被结合到所述第一管状层和所述第二管状层中的至少一个上。
7.根据前述任一权利要求所述的软管构件，其中，所述金属带是铝箔。
8.一种制造软管的方法，包括：
提供形成用于流体流动的管道的第一管状层；
利用围绕所述第一管状层的至少一个金属带形成金属蒸气阻挡层，所述金属蒸气阻挡层具有沿所述软管的纵向伸展、沿径向向外延伸的至少一个接合部，所述至少一个接合部被折叠在所述金属带的与所述接合部相邻的部分上；及
提供围绕所述金属蒸气阻挡层的第二管状层。
9.根据前述任一权利要求所述的方法，其中，所述金属蒸气阻挡层由分别围绕所述第一管状层的各个半部的一对金属带形成，且其中，每个所述金属带的相对的边缘部分与相应的相对的边缘部分重叠以形成一对接合部。
10.根据前述任一权利要求所述的方法，还包括：焊接所述至少一个接合部。
11.根据前述任一权利要求所述的方法，还包括：超声波焊接所述至少一个接合部。
12.根据前述任一权利要求所述的方法，还包括：将所述接合部的至少一部分结合到所述金属带的与所述接合部相邻的部分上。
13.根据前述任一权利要求所述的方法，还包括：在所述第二管状层外部提供编织层。
14.根据前述任一权利要求所述的方法，还包括：将金属阻挡层结合到所述第一管状层和所述第二管状层中的至少一个上。
15.根据前述任一权利要求所述的方法，其中，所述结合包括硫化。
16.一种由根据前述任一权利要求所述的方法制成的软管。
17.一种用于输送流体的软管构件，包括：
第一管状层；
金属蒸气阻挡层，其围绕所述第一管状层，所述金属蒸气阻挡层形成为金属管，具有从该金属管沿径向向外形成的至少一个纵向接合部，所述纵向接合部被折叠在所述金属管的与所述纵向接合部相邻的部分上；以及
第二管状层，其围绕所述金属蒸气阻挡层。
18.根据前述任一权利要求所述的软管构件，其中，所述金属蒸气阻挡层由分别围绕所述第一管状层的各个半部的一对金属带形成，且其中，每个所述金属带的相对的边缘部分与另一带的相应的相对的边缘部分重叠以形成一对接合部。
19.根据前述任一权利要求所述的软管构件，其中，所述至少一个接合部被焊接。
20.根据前述任一权利要求所述的软管构件，其中，所述至少一个接合部被超声波焊接。
21.根据前述任一权利要求所述的软管构件，其中，所述接合部的至少一部分被结合到所述金属管的与所述接合部相邻的部分上。
22.根据前述任一权利要求所述的软管构件，其中，所述金属蒸气阻挡层被结合到所述第一管状层和所述第二管状层中的至少一个上。
23.根据前述任一权利要求所述的软管构件，其中，所述金属阻挡层是铝箔。
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