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1. 发明授权

US06167950A Heat transfer tube 失效
标题翻译：传热管
公开(公告)号：US06167950A
公开(公告)日：2001-01-02
申请号：US08672383
申请日：1996-05-28
申请人： Neelkanth S. Gupte , Xin Liu , Steven J. Spencer , Robert H. L. Chiang , Daniel Gaffaney
发明人： Neelkanth S. Gupte , Xin Liu , Steven J. Spencer , Robert H. L. Chiang , Daniel Gaffaney
IPC分类号： F28F1318
CPC分类号： F28F13/182 , F28F1/36 , F28F1/42 , F28F1/422 , F28F17/005
摘要： A heat transfer tube (10) for use in an application, such as a shell and tube type air conditioning system condenser, in which a fluid flowing through the heat exchanger external to the tubes condenses by transfer of heat to a cooling fluid flowing through the tubes. The tube has at least one fin convolution (20) extending helically around its external surface (13). A pattern of notches (30) extends at an oblique angle (&agr;) across the fin convolutions at intervals about the circumference of the tube. There is a spike (22) between each pair of adjacent notches. The fin convolution, notches and spikes are formed in the tube by rolling the wall of the tube between a mandrel and, first, a gang of finning disks (63) and, second, a notching wheel (66). Because, during the manufacture of the tube, of the interaction of the rotating and advancing tube and the notching wheel, the angle (&bgr;) of inclination of the axis of the tip of the spike is oblique with respect to the notch angle. The maximum width (Wt) of the spike is greater than the width (Wr) of the proximal portion of the fin convolution.
摘要翻译：一种用于诸如管壳式空调系统冷凝器的应用中的传热管（10），其中流过管外部的热交换器的流体通过将热传递到流过管。管具有围绕其外表面（13）螺旋延伸的至少一个翅片卷（20）。切口（30）的图案以围绕管圆周的间隔跨越翅片卷绕以倾斜角（α）延伸。每对相邻凹口之间有一个尖峰（22）。通过在心轴和第一组翅片（63）之间滚动管的壁而在管中形成翅片卷积，切口和钉，并且第二切口轮（66）在管中形成。因为在管的制造期间，旋转和前进管与开槽轮的相互作用，尖峰的轴线的倾斜角度（β）相对于切口角度是倾斜的。尖峰的最大宽度（Wt）大于翅片卷积的近端部分的宽度（Wr）。

2. 发明授权

US5333682A Heat exchanger tube 失效
标题翻译：热交换器管
公开(公告)号：US5333682A
公开(公告)日：1994-08-02
申请号：US120197
申请日：1993-09-13
申请人： Xin Liu , Steven J. Spencer , Neelkanth S. Gupte , Robert H. L. Chiang , Daniel Gaffaney
发明人： Xin Liu , Steven J. Spencer , Neelkanth S. Gupte , Robert H. L. Chiang , Daniel Gaffaney
IPC分类号： F28F1/12 , F28F1/26 , F28F1/36 , F28F13/18
CPC分类号： F28F13/187 , F28F1/26 , Y10S165/911
摘要： A tube for use in a heat exchanger where heat is transferred between a fluid flowing through the tube and a fluid flowing around the exterior of the tube and where the fluid external to the tube boils during the heat exchange process. The tube has one or more external fin convolutions extending from its external surface. At intervals along each side surface of the fin convolutions there are shoulder notches extending from the fin side surfaces. The groove space between adjacent fin convolutions has raised teeth located circumferentially at intervals. The fin convolutions do not extend perpendicularly from the tube surface but are inclined, with one convolution overlying an adjacent groove but not touching its adjacent neighbor fin convolution to form a re-entrant boiling cavity with an opening gap. In one embodiment, the opening gap extends completely around the circumference of the tube. In another embodiment, the curved fin convolutions are depressed at intervals around the circumference of the tube so that a fin convolution is in close proximity to its adjacent neighbor closing the gap in the vicinity of the depression.
摘要翻译：一种用于热交换器的管，其中热量在流过管的流体和围绕管的外部流动的流体之间传递，并且在外部的流体在热交换过程中沸腾。该管具有从其外表面延伸的一个或多个外部翅片卷积。沿着翅片卷的每个侧表面的间隔，存在从翅片侧表面延伸的肩部凹口。相邻鳍片之间的凹槽间隔周期地凸出齿。翅片卷积不垂直于管表面延伸，而是倾斜，其中一个卷积覆盖相邻的凹槽，但不接触其相邻的相邻翅片卷积，以形成具有开口间隙的重新沸腾的空腔。在一个实施例中，开口间隙完全围绕管的圆周延伸。在另一个实施例中，弯曲的翅片卷绕围绕管的圆周间隔地被压下，使得翅片卷绕紧邻其相邻的邻近物，其邻近凹陷处的间隙。

3. 发明授权

US5203404A Heat exchanger tube 失效
标题翻译：热交换器管
公开(公告)号：US5203404A
公开(公告)日：1993-04-20
申请号：US844051
申请日：1992-03-02
申请人： Robert H. L. Chiang , Daniel Gaffaney , Albert J. Kallfelz
发明人： Robert H. L. Chiang , Daniel Gaffaney , Albert J. Kallfelz
IPC分类号： F28F13/18 , F28F17/00
CPC分类号： F28F13/185 , F28F17/005
摘要： A heat exchanger tube (10) for use in an application, such as a shell and tube type air conditioning system condenser, in which a fluid flowing through the heat exchanger external to the tubes condenses by transfer of heat to a cooling fluid flowing through the tubes. The tube has at least one fin convolution (22) extending helically around its external surface (13). Multiple axial notches (23) are impressed into the fin at intervals along its extent. Because the notches are impressed and not cut into the fin, material displaced from a fin to form a notch forms lateral projections (24) from the the walls of the fin. The notched fins provide increased external heat transfer surface area on the tube, destabilize the film of condensate on the tube external surface, thus causing the film to be generally thinner, and promote condensate drainage from the fins and off the tube and thus increase the heat transfer performance of the tube.

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