Low Pressure Drop, Low NOx, Induced Draft Gas Heaters
    1.
    发明申请
    Low Pressure Drop, Low NOx, Induced Draft Gas Heaters 有权
    低压降,低NOx,引风气加热器

    公开(公告)号:US20110311924A1

    公开(公告)日:2011-12-22

    申请号:US13166361

    申请日:2011-06-22

    摘要: An improved induced draft gas burner assembly (31, 131, 231, 331, 431, 531, 631) for low NOx residential and light commercial gas furnaces (10, 10a) is disclosed. The improved burner includes an upstream assembly coupled to a fuel inlet (55) and an air inlet (43). The air inlet (43) is coupled to a neck (41, 141, 241, 341, 441, 541, 641) extending between the air inlet (43) and the outlet of the neck (41, 141, 241, 341, 441, 541, 641), both of which may be disposed within an optional chamber (42, 142, 242, 342, 442). If used, such a chamber (42, 142, 242, 342, 442) also includes an outlet coupled to a burner (46, 146, 246, 346, 546, 646). In practice, the chamber (42, 142, 242, 342, 442) and neck (41, 141, 241, 341, 441, 541, 641) behave as a Helmholtz resonator that can be tuned to provide an upstream impedance Zup that exceeds the downstream impedance Zdown of the components downstream of the burner assembly (31, 131, 231, 331, 431, 531, 631). The volume of the chamber (42, 142, 242, 342, 442), the length and cross-sectional area and shape or geometry of the neck (41, 141, 241, 341, 441, 541, 641) provide convenient variables for manipulating Zup and stabilizing the flame. Various configurations of the neck (41, 141, 241, 341, 441, 541, 641) may be use to provide a sufficient volume thereby eliminating the need for the chamber (42, 142, 242, 342, 442).

    摘要翻译: 公开了一种用于低NOx住宅和轻型商业燃气炉(10,10a)的改进的引风通风炉燃烧器组件(31,131,231,331,431,531,631)。 改进的燃烧器包括联接到燃料入口(55)和空气入口(43)的上游组件。 空气入口(43)联接到在空气入口(43)和颈部(41,141,241,341,441)的出口之间延伸的颈部(41,141,241,341,441,541,641) ,541,641),它们都可以设置在任选的室(42,142,242,342,442)内。 如果使用,这样的室(42,142,242,342,442)还包括连接到燃烧器(46,146,246,346,546,646)的出口。 在实践中,室(42,142,242,342,442)和颈部(41,41,241,341,441,541,641)表现为亥姆霍兹共振器,其可被调谐以提供超过的上游阻抗Zup 在燃烧器组件(31,131,231,331,431,531,631)下游的部件的下游阻抗Zdown。 腔室(42,142,242,342,442)的体积,颈部(41,141,241,341,441,541,641)的长度和横截面积以及形状或几何形状为 操纵Zup并稳定火焰。 可以使用颈部(41,141,241,341,441,541,641)的各种构造来提供足够的体积,从而消除对腔室(42,142,242,342,442)的需要。

    Low pressure drop, low NOx, induced draft gas heaters
    3.
    发明授权
    Low pressure drop, low NOx, induced draft gas heaters 有权
    低压降,低NOx,引风通风加热器

    公开(公告)号:US09127837B2

    公开(公告)日:2015-09-08

    申请号:US13166361

    申请日:2011-06-22

    IPC分类号: F23D14/04 F23M20/00

    摘要: An improved induced draft gas burner assembly for low NOx residential and light commercial gas furnaces is disclosed. The improved burner includes an upstream assembly coupled to a fuel inlet and an air inlet. The air inlet is coupled to a neck extending between the air inlet and the outlet of the neck, both of which may be disposed within an optional chamber. If used, such a chamber also includes an outlet coupled to a burner. In practice, the chamber and neck behave as a Helmholtz resonator that can be tuned to provide an upstream impedance Zup that exceeds the downstream impedance Zdown of the components downstream of the burner assembly.

    摘要翻译: 公开了一种用于低NOx住宅和轻型商业燃气炉的改进的诱导气体燃烧器组件。 改进的燃烧器包括联接到燃料入口和空气入口的上游组件。 空气入口连接到在空气入口和颈部的出口之间延伸的颈部,两者都可以设置在任选的腔室内。 如果使用,这种室还包括连接到燃烧器的出口。 实际上,腔室和颈部表现为亥姆霍兹共振器,可以调谐以提供超过燃烧器组件下游部件的下游阻抗Zdown的上游阻抗Zup。

    System for reducing compressor noise
    4.
    发明授权
    System for reducing compressor noise 有权
    降低压缩机噪音的系统

    公开(公告)号:US08167540B2

    公开(公告)日:2012-05-01

    申请号:US12011822

    申请日:2008-01-30

    IPC分类号: F01D25/06

    CPC分类号: F04D29/666 Y10S416/50

    摘要: A system for reducing compressor noise includes a rotor having a plurality of blades. The blades have a nominal geometry characterized by a blade parameter. At least some of the blades are mistuned, such that they differ from the nominal geometry by greater than a manufacturing tolerance in the blade parameter. The blades produce shock waves at a blade passing frequency, and the mistuned blades shift acoustic energy away from the blade passing frequency to multiple lower amplitude tones at other frequencies. The system is configurable to be deployed with an inlet silencer that preferentially absorbs acoustic energy at some of the shifted frequencies.

    摘要翻译: 一种用于降低压缩机噪声的系统包括具有多个叶片的转子。 叶片具有以叶片参数为特征的标称几何形状。 至少一些叶片失谐,使得它们与标称几何不同,大于叶片参数中的制造公差。 叶片以叶片通过频率产生冲击波,并且失谐的叶片将声能从叶片通过频率转移到其它频率处的多个较低振幅音调。 该系统可配置成与入口消声器一起部署,该消声器在某些偏移频率处优先吸收声能。

    Racetrack Carryover Design for Multi-Burner Ignition in Induced Draft Heating System
    5.
    发明申请
    Racetrack Carryover Design for Multi-Burner Ignition in Induced Draft Heating System 有权
    引风加热系统中多燃烧器点火赛马场设计

    公开(公告)号:US20120052452A1

    公开(公告)日:2012-03-01

    申请号:US13196418

    申请日:2011-08-02

    IPC分类号: F24H3/02 F23N1/02

    摘要: An ignition system for a multi-burner heat exchanger assembly, a furnace, and a method using same are disclosed. The assembly may include a plurality of adjacent heat exchanger tubes, with a burner associated with each tube. All the burners may be lit with a single igniter and no source of secondary air. To do so, each of the burners may be provided so as to generate a swirling exit flow of combustion gases. One or more carryover tubes may also be connected between adjacent pairs of heat exchanger tubes or adjacent pairs of burners. The swirling flow generated by the burners causes hot combustion gases to move through the carryover tubes to thus carry the flame from one burner to the next. Not only can a single igniter be used, but a single flame sensor as well, while at the same time reducing nitrogen oxide emissions.

    摘要翻译: 公开了一种用于多燃烧器热交换器组件,炉和其使用方法的点火系统。 组件可以包括多个相邻的热交换器管,其具有与每个管相关联的燃烧器。 所有的燃烧器可能会点燃一个点火器,没有二次空气源。 为了这样做,可以提供每个燃烧器以产生涡流的燃烧气体的出口流。 一个或多个携带管也可以连接在相邻的热交换器管对或相邻的燃烧器对之间。 由燃烧器产生的旋流使得热的燃烧气体移动通过排出管,从而将火焰从一个燃烧器运送到下一个燃烧器。 不仅可以使用单个点火器,还可以使用单个火焰传感器,同时减少氮氧化物排放。

    System for reducing compressor noise
    6.
    发明申请
    System for reducing compressor noise 有权
    降低压缩机噪音的系统

    公开(公告)号:US20090191047A1

    公开(公告)日:2009-07-30

    申请号:US12011822

    申请日:2008-01-30

    IPC分类号: F04D29/66

    CPC分类号: F04D29/666 Y10S416/50

    摘要: A system for reducing compressor noise includes a rotor having a plurality of blades. The blades have a nominal geometry characterized by a blade parameter. At least some of the blades are mistuned, such that they differ from the nominal geometry by greater than a manufacturing tolerance in the blade parameter. The blades produce shock waves at a blade passing frequency, and the mistuned blades shift acoustic energy away from the blade passing frequency to multiple lower amplitude tones at other frequencies. The system is configurable to be deployed with an inlet silencer that preferentially absorbs acoustic energy at some of the shifted frequencies.

    摘要翻译: 一种用于降低压缩机噪声的系统包括具有多个叶片的转子。 叶片具有以叶片参数为特征的标称几何形状。 至少一些叶片失谐,使得它们与标称几何不同,大于叶片参数中的制造公差。 叶片以叶片通过频率产生冲击波,并且失谐的叶片将声能从叶片通过频率转移到其它频率处的多个较低振幅音调。 该系统可配置成与入口消声器一起部署,该入口消声器在某些偏移频率处优先吸收声能。

    Induced-draft low swirl burner for low NOx emissions
    7.
    发明授权
    Induced-draft low swirl burner for low NOx emissions 有权
    用于低NOx排放的诱导低涡旋燃烧器

    公开(公告)号:US09033696B2

    公开(公告)日:2015-05-19

    申请号:US13281845

    申请日:2011-10-26

    摘要: A burner for use with an induced draft furnace and which satisfies reduced nitrous oxide (NOx) emission standards is disclosed. The burner may employ a mechanical swirler that introduces a rotational vector to the emitted air and fuel mixed by the burner. By introducing the rotational vector, the resulting flame is more stable and sustainable even with the relatively low air flow afforded by an induced system. Such flame stability can be enhanced by positioning the burner directly within an inlet to a heat exchanger and manufacturing the inlet with reception surfaces that form a frusto-conically shaped flame expansion zone. In doing so, a secondary source of air is avoided and NOx emissions are reduced.

    摘要翻译: 公开了一种用于引风机并且满足减少的一氧化二氮(NOx)排放标准的燃烧器。 燃烧器可以采用机械旋流器,其将旋转矢量引入排放的空气和由燃烧器混合的燃料。 通过引入旋转矢量,即使由诱导系统提供的相对较低的空气流量,所得到的火焰也更稳定和可持续。 可以通过将燃烧器直接放置在热交换器的入口中并且将入口与形成截头圆锥形的火焰膨胀区的接收表面一起制造来提高这种火焰稳定性。 在这样做时,避免了二次空气源,并减少了NOx排放。

    Low NOx Gas Burners With Carryover Ignition
    8.
    发明申请
    Low NOx Gas Burners With Carryover Ignition 有权
    低NOx气体燃烧器带有加油点火

    公开(公告)号:US20120178032A1

    公开(公告)日:2012-07-12

    申请号:US13311819

    申请日:2011-12-06

    IPC分类号: F23C5/08 F23D14/84

    摘要: A gas burner for low NOx gas furnaces is disclosed with improved flame carryover for igniting one or more adjacent burners. The burner includes a burner tube that receives a mixture of fuel and air. The burner tube is coupled to an outlet. The outlet includes a primary outlet opening which is in communication with at least one transverse slot for communicating a flame to at least one adjacent burner. The primary outlet opening may be elliptical and the outlet further may also include a concave outer face through which the primary outlet opening extends. The at least one slot may include a pair of oppositely directed transverse slots extending outward from the primary outlet opening along a semi-minor axis of the primary outlet opening.

    摘要翻译: 公开了一种用于低NOx气体炉的气体燃烧器,其具有用于点燃一个或多个相邻燃烧器的改进的火焰携带。 燃烧器包括燃烧器管,其接收燃料和空气的混合物。 燃烧器管连接到出口。 出口包括主出口开口,其与至少一个横向狭槽连通,用于将火焰传递到至少一个相邻的燃烧器。 主出口开口可以是椭圆形的,并且出口还可以包括凹入的外表面,主出口开口延伸穿过该外表面。 所述至少一个狭槽可以包括一对相对方向的横向槽,所述横向槽沿着主出口开口的半短轴从主出口开口向外延伸。

    Low NOx gas burners with carryover ignition

    公开(公告)号:US10006628B2

    公开(公告)日:2018-06-26

    申请号:US13311819

    申请日:2011-12-06

    IPC分类号: F23C5/08 F23D14/58 F23D14/26

    摘要: A gas burner for low NOx gas furnaces is disclosed with improved flame carryover for igniting one or more adjacent burners. The burner includes a burner tube that receives a mixture of fuel and air. The burner tube is coupled to an outlet. The outlet includes a primary outlet opening which is in communication with at least one transverse slot for communicating a flame to at least one adjacent burner. The primary outlet opening may be elliptical and the outlet further may also include a concave outer face through which the primary outlet opening extends. The at least one slot may include a pair of oppositely directed transverse slots extending outward from the primary outlet opening along a semi-minor axis of the primary outlet opening.

    Racetrack carryover design for multi-burner ignition in induced draft heating system
    10.
    发明授权
    Racetrack carryover design for multi-burner ignition in induced draft heating system 有权
    引风加热系统中多燃烧器点火的跑道残留设计

    公开(公告)号:US08668489B2

    公开(公告)日:2014-03-11

    申请号:US13196418

    申请日:2011-08-02

    IPC分类号: F24H3/02

    摘要: An ignition system for a multi-burner heat exchanger assembly, a furnace, and a method using same are disclosed. The assembly may include a plurality of adjacent heat exchanger tubes, with a burner associated with each tube. All the burners may be lit with a single igniter and no source of secondary air. To do so, each of the burners may be provided so as to generate a swirling exit flow of combustion gases. One or more carryover tubes may also be connected between adjacent pairs of heat exchanger tubes or adjacent pairs of burners. The swirling flow generated by the burners causes hot combustion gases to move through the carryover tubes to thus carry the flame from one burner to the next. Not only can a single igniter be used, but a single flame sensor as well, while at the same time reducing nitrogen oxide emissions.

    摘要翻译: 公开了一种用于多燃烧器热交换器组件,炉和其使用方法的点火系统。 组件可以包括多个相邻的热交换器管,其具有与每个管相关联的燃烧器。 所有的燃烧器可能会点燃一个点火器,没有二次空气源。 为了这样做,可以提供每个燃烧器以产生涡流的燃烧气体的出口流。 一个或多个携带管也可以连接在相邻的热交换器管对或相邻的燃烧器对之间。 由燃烧器产生的旋流使得热的燃烧气体移动通过排出管,从而将火焰从一个燃烧器运送到下一个燃烧器。 不仅可以使用单个点火器,还可以使用单个火焰传感器,同时减少氮氧化物排放。