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公开(公告)号：US4938283A
公开(公告)日：1990-07-03
申请号：US369065
申请日：1989-06-19
CPC分类号： F27D99/0033 , F23C5/00 , F23M20/005 , F24H9/1836
摘要： A belled orifice inlet plate is provided for an induced draft combustion furnace heat exchanger of the type in which an inshot burner produces a hot gaseous combustion that is injected through an opening in the inlet plate into a combustion zone in the heat exchanger. The inlet plate has a flared collar that surrounds the opening at its periphery, and which extends a predetermined distance into the combustion zone. Preferably, the collar should have a depth on the order of one-quarter inch to one-half inch, and the flared portion should have a radius of curvature on the order of about one-quarter inch.
摘要翻译： 提供了一种钟形孔入口板，用于引燃式燃烧炉热交换器，其中喷嘴燃烧器产生通过入口板中的开口喷射到热交换器中的燃烧区域的热气体燃烧。 入口板具有在其周边围绕开口并且延伸预定距离进入燃烧区的扩口套环。 优选地，套环应该具有四分之一英寸到二分之一英寸的深度，并且扩口部分应该具有大约四分之一英寸的曲率半径。
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公开(公告)号：US5961320A
公开(公告)日：1999-10-05
申请号：US660719
申请日：1996-06-10
CPC分类号： F23D14/70 , F23C2203/20
摘要： A mixing/quenching device is in the form of a perforate metal sheet or screen secured at the downstream end of a belled orifice with the perforations defining a plurality of flow paths. The dividing and combining of the flow is passing through the flow paths provides turbulence such that thermal NO.sub.x is reduced.
摘要翻译： 混合/淬火装置是穿孔金属片或筛网的形式，其固定在鼓形孔口的下游端，穿孔限定多个流动路径。 流动的分离和组合是通过流动路径提供湍流，使得热NOx降低。
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公开(公告)号：US5878740A
公开(公告)日：1999-03-09
申请号：US738559
申请日：1996-10-28
CPC分类号： F23C3/002 , F23M20/005 , F23D2210/00
摘要： An apparatus for reducing the resonant type noise generated in a combustion driven heating apparatus. A dissipative device is disposed within a hot gas passageway to absorb and attenuate acoustic wave energy and thereby reducing the resonant noise level of the heating apparatus.
摘要翻译： 一种用于降低在燃烧驱动的加热装置中产生的谐振型噪声的装置。 耗散装置设置在热气通道内以吸收和衰减声波能量，从而降低加热装置的共振噪声水平。
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