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1. 发明授权

US5186528A Removable access panels for rooftop unit 失效
标题翻译：屋顶单元可移动检修面板
公开(公告)号：US5186528A
公开(公告)日：1993-02-16
申请号：US677234
申请日：1991-03-29
申请人： David L. Schardt , Lois A. Luna , Ivor S. Jones
发明人： David L. Schardt , Lois A. Luna , Ivor S. Jones
IPC分类号： F24F13/20
CPC分类号： F24F13/20
摘要： The present invention is an access panel for a roof top air conditioning unit. The access panel edges interfit with edges of the air conditioner cabinet to form a tortuous path for entry into the cabinet interior. The tortuous path inhibits air, water, and moisture penetration. Also, insulating material is trapped between the interfitting edges to further block the penetration and insulate the cabinet interior. At the top edge, a lip extends downwardly to provide a positive stop to keep the removable access panel from laterally falling.
摘要翻译：本发明是屋顶空调机组的检修面板。检修面板边缘与空调机柜的边缘相配合以形成进入机柜内部的曲折路径。曲折的路径阻止空气，水和湿气渗透。此外，绝缘材料被夹在相互配合的边缘之间，以进一步阻止穿透并使柜体内部绝缘。在顶部边缘处，唇缘向下延伸以提供正向停止以保持可移除的接近面板不会横向掉落。

2. 发明申请

US20080264617A1 Heat exchanger 审中-公开
标题翻译：热交换器
公开(公告)号：US20080264617A1
公开(公告)日：2008-10-30
申请号：US11789870
申请日：2007-04-26
申请人： David Martin , Gang Li , David L. Schardt , Ronald H. Griffin
发明人： David Martin , Gang Li , David L. Schardt , Ronald H. Griffin
IPC分类号： F28D7/10
CPC分类号： F28F27/02 , F28D7/0066 , F28D7/022 , F28D7/14 , F28F9/0246
摘要： Disclosed herein is a heat exchanger for altering the temperature of water from a fluid circulation line of a recreational body of water. The heat exchanger includes a helical tube-in-tube assembly adapted for flow therethrough of a plurality of fluids for heat transfer therebetween, and the heat exchanger further includes a tank defining a chamber in which said helical tube-in-tube assembly is positioned. In an exemplary embodiment, the chamber is an annular chamber, and the tank includes a cylindrical wall defining an external cavity extending through said tank.
摘要翻译：本发明公开了一种热交换器，用于改变来自休闲水体的流体循环管线的水的温度。热交换器包括适于流过其中的多个流体的螺旋管内管组件，用于在它们之间传热，并且热交换器还包括限定腔室的罐，所述螺旋管中管组件位于该腔室中。在示例性实施例中，腔室是环形室，并且罐包括限定延伸穿过所述罐的外部空腔的圆柱形壁。

3. 发明授权

US06321833B1 Sinusoidal fin heat exchanger 有权
标题翻译：正弦翅片热交换器
公开(公告)号：US06321833B1
公开(公告)日：2001-11-27
申请号：US09419377
申请日：1999-10-15
申请人： Timothy O'Leary , David L. Schardt , Brady A. Mills , Vance Willis
发明人： Timothy O'Leary , David L. Schardt , Brady A. Mills , Vance Willis
IPC分类号： F28D1053
CPC分类号： F28F1/32 , F28D7/06 , F28F27/00
摘要： A fin and tube heat exchanger includes fins shaped along dynamically, empirically determined isothermal lines. The fins preferably have deflectors along a trailing edge thereof to concentrate heat flux into a back row of tubes. The deflectors bridge adjacent fins to define baffles. The preferred fin shape may be obtained empirically by trimming fin areas exhibiting excessive temperatures during operation.
摘要翻译：翅片和管式热交换器包括沿动态，经验确定的等温线形状的翅片。翅片优选地具有沿着其后缘的偏转器，以将热通量集中到后排管中。导流板桥接相邻的散热片以限定挡板。通过在操作期间修剪显示过度温度的翅片区域，可凭经验获得优选的翅片形状。

4. 外观设计

USD574938S1 Heat exchanger 有权
公开(公告)号：USD574938S1
公开(公告)日：2008-08-12
申请号：US29286192
申请日：2007-04-26
申请人： David Martin , Gang Li , David L. Schardt
设计人： David Martin , Gang Li , David L. Schardt

5. 发明申请

US20080223561A1 Heat Exchangers and Headers Therefor 审中-公开
标题翻译：热交换器及其头
公开(公告)号：US20080223561A1
公开(公告)日：2008-09-18
申请号：US12017659
申请日：2008-01-22
申请人： Gang Li , Ronald H. Griffin , Carl Bennett Davidson , Vance Elliot Willis , Vitaly Shinkarev , David Martin , Michael Damion Mercer , David L. Schardt
发明人： Gang Li , Ronald H. Griffin , Carl Bennett Davidson , Vance Elliot Willis , Vitaly Shinkarev , David Martin , Michael Damion Mercer , David L. Schardt
IPC分类号： F28D7/02
CPC分类号： F28D7/14 , F28F9/02 , F28F27/02 , F28F2250/06
摘要： In a first aspect of the present invention, a header for a heat exchanger is disclosed that has an inflow side, an outflow side, a bypass port therebetween, and a pressure-sensitive flapper valve proximal the bypass port. As pressure increases at the inflow side of the header, the flapper valve opens proportionally, and, as pressure decreases at the inflow side, the flapper valve closes proportionally. In a second aspect of the present invention, a tube-in-tube heat exchanger is disclosed that includes a helical tube-in-tube assembly adapted for flow therethrough of a plurality of fluids for heat transfer therebetween. In a third aspect of the present invention, a heat system is provided to include an embodiment of the header and an embodiment of the tube-in-tube heat exchanger, so as to provide a bypass of the tube-in-tube heat exchanger under a pressure condition.
摘要翻译：在本发明的第一方面中，公开了一种用于热交换器的集管，其具有流入侧，流出侧，旁通端口和靠近旁通端口的压敏挡板阀。随着压力在集管的流入侧的压力增加，挡板阀按比例打开，并且随着流入侧的压力降低，挡板阀按比例关闭。在本发明的第二方面中，公开了一种管式管式热交换器，其包括适于流过多个流体的螺旋管内管组件，用于在它们之间传热。在本发明的第三方面中，提供一种热系统以包括集管的一个实施例和管内管式热交换器的实施例，以便提供管内管式热交换器的旁路压力条件。

6. 发明授权

US6082993A Induced draft heater with premixing burners 失效
标题翻译：带预混燃烧器的感应加热器
公开(公告)号：US6082993A
公开(公告)日：2000-07-04
申请号：US322394
申请日：1999-05-28
申请人： Timothy P. O'Leary , David L. Schardt , Vance Willis
发明人： Timothy P. O'Leary , David L. Schardt , Vance Willis
IPC分类号： B01F3/02 , B01F5/04 , F23D14/10 , F23D14/60 , F23L17/00 , F23N5/24 , F23D14/62 , F24H3/00
CPC分类号： F23L17/005 , B01F5/045 , F23D14/105 , F23D14/60 , B01F3/02 , F23N2033/04
摘要： A fuel/air mixture control for an induction heater having a tube-type burner includes a side-venting fuel nozzle for introducing fuel into an induction air stream entering the burner. A multi-speed blower draws combustion air into the burner and an air flow constrictor disposed proximate the fuel nozzle increases the velocity of the induction air stream proximate the fuel nozzle, increasing the volume of fuel introduced into the burner conduit. The fuel/air mixture depends upon the speed of the blower, which can be thermostatically controlled to increase speed upon sensing higher temperature combustion products, thereby maintaining a steady mass air flow and air/fuel mixture.
摘要翻译：用于具有管式燃烧器的感应加热器的燃料/空气混合物控制器包括用于将燃料引入进入燃烧器的感应空气流中的侧排气燃料喷嘴。多速送风机将燃烧空气吸入燃烧器中，并且靠近燃料喷嘴设置的气流收缩器增加了靠近燃料喷嘴的感应空气流的速度，从而增加了引入燃烧器管道的燃料的体积。燃料/空气混合物取决于鼓风机的速度，其可以被恒温控制以在检测到更高温度的燃烧产物时提高速度，从而保持稳定的质量空气流和空气/燃料混合物。

7. 发明授权

US6026804A Heater for fluids 失效
标题翻译：加热器用于流体
公开(公告)号：US6026804A
公开(公告)日：2000-02-22
申请号：US801077
申请日：1997-02-14
申请人： David L. Schardt , Kendall R. Carter , John M. Stallins , Charles E. Taylor
发明人： David L. Schardt , Kendall R. Carter , John M. Stallins , Charles E. Taylor
IPC分类号： F24H1/40 , F28F9/02 , F28F9/16 , F28F9/18 , F28F21/06 , E01L19/47
CPC分类号： F28F21/067 , F24H1/40 , F28F27/02 , F28F9/0207 , F28F9/16 , F28F9/18
摘要： A fluid heater includes a housing, a burner unit disposed in a bottom portion of the housing for burning combustible fuel, a combustion chamber disposed within the housing where the fuel is burned and a heat exchanger disposed substantially within the housing over the combustion chamber. The heat exchanger absorbs heat generated from burning the fuel and conducts the heat to a fluid to be heated. The heat exchanger includes a pair of spaced, parallel, stainless steel tubesheets with a plurality of tubes running therebetween and sealingly received within mating apertures in each of the tubesheets. A plastic front header and a plastic rear header are removably attached to the tubesheets distal to said tubes. The apertures in the tubesheets preferably have forged flanges for increasing the surface contact area with the heat exchanger tubes. The heat exchanger is corrosion resistant due to the combination of corrosion-resistant tubesheets, tubes and headers.
摘要翻译：流体加热器包括壳体，设置在壳体的底部中用于燃烧可燃燃料的燃烧器单元，设置在壳体内的燃烧室，其中燃料被燃烧，以及基本上设置在燃烧室内的壳体内的热交换器。热交换器吸收由燃烧燃料产生的热量并将热量传导到待加热的流体。热交换器包括一对间隔开的平行的不锈钢管板，其中多个管在其间运行并密封地容纳在每个管板中的配合孔内。塑料前头和塑料后头部可移除地连接到远离所述管的管板。管板中的孔优选地具有用于增加与热交换器管的表面接触面积的锻造法兰。由于耐腐蚀管板，管和集管的组合，热交换器是耐腐蚀的。

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