CN1152070A - 绝热消音管 - Google Patents

绝热消音管 Download PDF

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CN1152070A
CN1152070A CN96121147A CN96121147A CN1152070A CN 1152070 A CN1152070 A CN 1152070A CN 96121147 A CN96121147 A CN 96121147A CN 96121147 A CN96121147 A CN 96121147A CN 1152070 A CN1152070 A CN 1152070A
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福井弘毅
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Abstract

一种绝热消音管，它包括：用平纤维带构成的内层，平纤维带用树脂加强带结合其相邻边接触部分；树脂条形体，它紧贴在树脂加强带上螺旋地缠绕；开孔泡沫层，由内层的外面上的开孔泡沫带构成；中间薄层，由开孔泡沫带的外面上的薄树脂层构成；闭孔泡沫层，由中间薄层的外面上的闭孔泡沫树脂带构成；以及外层，由闭孔泡沫层的外面上的薄树脂带构成。

Description

绝热消音管
本发明涉及气体输送管，特别是一种适用于例如用于加热或冷却的、与室温不同的热空气或冷空气的传输的传输空气的绝热管。
这种常规用于气体传输的绝热管通常是由热绝缘泡沫材料螺旋地缠绕在输送管体的外周部，而使输送管体形成输送管的内表面来构成的。
在如此结构的常规输送管中，由输送管体构成输送管的内周面，输送管成为由空气吹动源例如吹风机所产生噪音的导管，因此这一噪音连同被传输的空气从输送管的开口部被送出，使人不舒服。由于这种噪音在输送管使用期间持续产生，也就是说，在吹空气期间，始终存在这一有损人们神经的问题。
因此，本发明目的是解决常规空气输送管中存在的从该管中发出极令人生厌的噪音的问题，即使不能使噪音完全消失也要尽可能多地降低噪音来消除输送管中发出的不愉快噪音。从制造角度出发的目的是提供一种适合连续生产、花费不高，不需要新设备的输送管。
本发明绝热消音管包括：内层，由通过螺旋地缠绕平纤维带并用树脂加强带将纤维带相邻连接部分的外周面整体结合起来形成基本平滑的园筒形来构成；一个或多个树脂条形体，它贴着树脂加强带螺旋地缠绕后并与纤维带结合；开孔泡沫层，由将开孔泡沫带螺旋缠绕在内层的外周面上同时使其邻边相对接形成；中间薄层，通过将薄树脂层状带螺旋缠绕在开孔泡沫带的外周面上，同时使树脂薄带部分搭接，使搭接部分整体结合来构成；闭孔泡沫层，通过将闭孔泡沫树脂带螺旋缠绕在中间薄层的外周面上，同时使其邻边互相对接来形成；外层，通过将薄树脂带螺旋缠绕在闭孔泡沫层的外周面上，同时使树脂薄带部分搭接，使搭接部分整体结合来形成；其中纤维带、树脂加强带、树脂条形体、开孔泡沫树脂带、形成中间薄层的树脂带、闭孔泡沫树脂带和形成外层的树脂带以相同螺距缠绕。
使用这样的结构，在本发明的绝热消音管中，空气可透过位于中间薄层的内侧的纤维内层和开孔泡沫层，以吸收输传空气期间产生的不愉快噪音。闭孔泡沫层和外层位于中间薄层的外周面上，以阻止流过输送管中空气的温度变化。特别是纤维带的连接部分通过纤维带背部的树脂加强带连接起来，这样保证纤维带面对输送管内部具有最大面积。
为完成本发明，可透过空气的非织物，织物或辨织物均可用作纤维带。更进一步，本发明可采用这样的结构，开孔泡沫带的对接部分位于连接纤维带的树脂加强带的外周面上；开孔泡沫带2布置在纤维带的空气可透过表面的整个背部以防止吸收噪音效果的下降；具有若干层的闭孔泡沫层由若干闭孔泡沫树脂带组成，以使其具有韧性，形成各层的每个带邻边的对接部分在输送管轴向上延伸，以使这些对接部分在输送管的厚度方向上不连续，因此防止其绝热效果减弱。
图1是本发明第一实施例中间部分输送管的局部断面立体图。
图2显示图1所示输送管的元件在部分剖示状态下的立体图。
图3是与图1等同的局部断面立体图，显示本发明的第二个实施例。
以下将参照附图描述本发明的最佳实施例。
图1和图2显示了本发明的第一个实施例。图1是部分剖掉的断面形式图，图2以剖示形式显示每个构成元件。
例如使用由层压连续的聚丙烯长纤维并通过热塑将其固定而形成的非织物作为构成图示输送管D的纤维带1的材料。这种非织物具有以下特性：在长度方向和横向的较好拉伸平衡性以及柔韧性；切割面无绽裂，表面无绒毛，基本不热缩；不被昆虫、霉菌、细菌或类似物所蛀蚀。树脂加强带12和树脂条形体13使用聚丙烯材料。
例如使用尿烷作为开孔泡沫树脂带2的材料，它被膨化至密度约为22kg/m3，拉伸强度为1.7kg/cm2。又例如使用聚乙烯作为闭孔泡沫树脂带4的材料，使其发泡至密度约为25kg/m3，拉伸强度为1.7kg/cm3。使用聚氯乙烯作为树脂材料形成中间层30和外层50的薄带3和5，它们具有好的熔化性。
图1、图2所示的输送管D具有例如22mm的螺旋节距。上述非织物构成的宽22mm厚0.5mm的纤维带1螺旋地缠绕在未被阐述的芯筒的外周，其邻边相互接触形成输送管。由聚丙烯制成的宽1mm，高3mm的树脂加强带12为倒T形，在从挤压机挤出后的半熔化状态下，马上被螺旋地缠绕在这些邻边的相接触部分11上，这两种材料被熔接，整体形成内部为光滑筒形的内层10。同时由聚丙烯制成的直径为1mm的一个条形体13的同样方式螺旋地缠绕在两个相邻的树脂加强带12的中间部分上，在树脂加强带12经挤压机挤压后的半熔化状态下，与纤维带1熔合在一起。用这种方式，减少了纤维带1的松懈，并保持其基本为直筒形状。
接下来，由尿烷制成的宽22mm，厚6mm的开孔泡沫树脂带2螺旋地缠绕在内层10的外周面上，其邻边相互接触，相接部分21位于树脂加强带12上，由此在内层10上形成开孔泡沫层20。然后，由聚氯乙烯制成的宽28mm厚0.3mm的薄带3螺旋地缠绕在开孔泡沫层20的外周面上，其边沿部分搭接近似6mm，搭接部分被熔接并整体形成中间薄层30。接下来，由聚乙烯制成的宽22mm厚2mm的4a、4b、4c，3层闭孔泡沫树脂带4螺旋地缠绕在薄层30的外周面上，形成闭孔泡沫层40。在宽度上，三层之间有半个宽度的错位，每层的邻边相互对接。再接下来，由聚氯乙烯制成的宽28mm，厚0.3mm，与上述薄带3相同的薄带5缠绕在闭孔泡沫层40的外周面上，其边沿部分搭接近似6mm，搭接部分被熔接并整体形成外层50。
以这样的方式，通过以相同的螺距螺旋缠绕形成管D，其中，由非编织的纤维带1和树脂加强带12构成内层10，由树脂条形体13、泡沫带2构成开口泡沫层20，由薄层带3形成中间薄层30，由三层泡沫带4a、4b、4c形成闭孔泡沫层40，并由薄层带5形成外层50。
图3显示另一实施例。形成内层10的纤维带、形成开孔泡沫层20的开孔泡沫带2和形成闭孔泡沫层40的3层闭孔泡沫树脂带4a、4b、4c的横宽稍宽都是30mm。形成中间薄层30的薄带3和形成外层的薄带5的横向宽度也稍宽至38mm，它们的搭接宽度都是8mm。另外粘在纤维带1背部的两个树脂条形体13布置成2股以保持纤维带，基本为直筒形。其它与第一实施例相同。
关于形成本发明输送管D的各树脂材料，当然，除第一实施例中列举的材料外，任何合成树脂材料均可被使用。对纤维带1的材料，不限制为合成树脂纤维，也可使用自然纤维材料。另外，关于纤维带1、加强带12和条形体13的粘接，形成中间薄层30的薄带3的粘接，和形成外层50的薄带5的粘接可在熔接处使用胶合剂进行，熔接是依靠从树脂挤压设备挤压出的半熔带或将这些带在热熔化下进行的。当这些带是靠熔接接合时，最好使用高互熔性的材料。关于纤维带1，因为其邻边部分被树脂加强带12熔接或固定，所以其邻边最好互相接触，但缠绕时也可具有一定间隙。
本发明代表性的实施例已在上描述，但是本发明不必要限制于这些实施例的结构上。只要提供本发明上述所需的构成元素、完成本发明目的并展示下述的效果，可以作出适当的修改与变化。
从以上描述已经清楚，本发明的绝热消音管在构成输送管的壁之间具有中间薄层，内侧有空气可透过的纤维层和开孔泡沫层构成的内侧，外侧有闭孔泡沫层和外层构成外侧。因此从空气吹动装置例如吹风机中产生的噪音被输送管内侧的两层有效地吸收，同时外侧的闭孔泡沫层防止流过输送管内部的空气温度的变化。另外，由于纤维带的连接部分由纤维带背部的树脂加强体连接，所以面向输送管内部的纤维带的面积增至最大，使其具有最大强度的噪音吸收效果，同时保证纤维带的加强和保持其形状。
另外，尽管纤维带本身的形状保持性不好，因为树脂条形体被布置并连接在其中间部分的背部、纤维带的宽度方向上，所以保证了纤维带的形状，使输送管的内表面几乎没有波纹状不平并保持直形。因此，因为可使用宽的纤维带，所以在同时使其它带具有较大宽度时可以方便、有效地进行大节距输送管的连续生产，这些是本发明的显著效果。

Claims (5)

1一种绝热消音管，包括：
螺旋缠绕的平纤维带，使相邻纤维带的边相互接触形成邻接部分；
固定在所述邻接部分外周面上的树脂加强带，所述螺旋缠绕的平纤维带和所述树脂加强带整体结合形成基本上为平滑园筒形的内层；
在树脂加强带上紧贴螺旋缠绕并与所述纤维带固定的至少一个树脂条形体；
将开孔泡沫树脂带螺旋缠绕在所述内层的外周面上，形成的开孔泡沫层，所述开孔泡沫树脂带的邻边互相接触；
将树脂薄带螺旋缠绕在所述开孔泡沫树脂带的外周面上形成的中间薄层，所述薄带互相部分搭接并互相整体连接；
将闭孔泡沫树脂带螺旋缠绕在所述中间薄层的外周面上形成的闭孔泡沫层，所述闭孔泡沫树脂带的邻边互相接触；
将薄树脂带螺旋缠绕在所述闭孔泡沫层的外周面上形成的外层，所述树脂薄带互相部分搭接并互相整体连接；
其中所述纤维带，所述树脂加强带，所述树脂条形体，所述开孔泡沫树脂带，形成所述中间薄层的所述树脂带，所述闭孔泡沫树脂带和形成所述外层的所述树脂带以相同螺旋节距缠绕。
2根据权利要求1所述的绝热消音管，其中所述纤维带是空气可透过的织物或空气可透过的非织物。
3根据权利要求1所述的绝热消音管，其中所述开孔泡沫树脂带的对接部分位于所述树脂加强带的外周面上。
4根据权利要求2所述的绝热消音管，其中所述开孔泡沫树脂带的邻接部分位于所述树脂加强带的外周面上。
5根据权利要求1所述的绝热消音管，其中闭孔泡沫层由若干闭孔泡沫树脂带组成的若干层构成，其中每个所述闭孔泡沫树脂带的边沿对接部分在所述输送管轴向上相互错位。
CN96121147A 1995-09-22 1996-09-21 绝热消音管 Expired - Fee Related CN1080369C (zh)

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MY121593A (en) 2006-02-28
CN1080369C (zh) 2002-03-06
US5795634A (en) 1998-08-18
ES2150824B1 (es) 2001-06-01
JP2706912B2 (ja) 1998-01-28
TW306957B (zh) 1997-06-01
JPH0989357A (ja) 1997-04-04
SG45500A1 (en) 1998-01-16

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