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1. 发明授权

US11819811B2 Premixing device and combustion device equipped with the premixing device 有权
公开(公告)号：US11819811B2
公开(公告)日：2023-11-21
申请号：US17348774
申请日：2021-06-16
申请人： NORITZ CORPORATION
发明人： Keiichi Miura , Tsuneo Funabiki , Tatsuya Karaki , Kyohei Ogawa
IPC分类号： B01F25/312 , B01F23/10 , B01F101/00 , F23D14/02 , F23D14/70 , F23D14/62
CPC分类号： B01F25/312 , B01F23/10 , B01F25/31242 , B01F25/312512 , B01F25/312522 , B01F2101/503 , F23D14/02 , F23D14/62 , F23D14/70 , F23D2203/007 , F23D2203/105
摘要： A premixing device includes: a gas flow passage forming member in which an x direction is used as an axial length direction, and a Venturi-shaped gas flow passage into which air can flow in from the outside is formed inside; and a blade portion positioned in the gas flow passage, extending in a y direction, and equipped with a fuel gas outlet. The blade portion includes first and second blade portions spaced apart from each other in a z direction, and an air flow path near the center through which a part of the air flows is formed between these first and second blade portions. At least one of a pair of surfaces of the first and second blade portions facing each other is equipped with an inner bulging portion that bulges in the z direction so as to squeeze a part of the air flow path near the center.

2. 发明公开

US20230324042A1 BURNER AND BOILER-BURNER ASSEMBLY 审中-公开
公开(公告)号：US20230324042A1
公开(公告)日：2023-10-12
申请号：US18133647
申请日：2023-04-12
申请人： Oilon Technology Oy
发明人： Joonas Kattelus , Lassi Karvonen
IPC分类号： F23D14/06 , F23D14/10 , F23D14/58 , F23D14/32 , F23D14/70
CPC分类号： F23D14/065 , F23D14/10 , F23D14/58 , F23D14/32 , F23D14/70 , F23D2203/007
摘要： A burner (1) installable to a furnace (9) for burning an air-fuel mixture and for generating a flame in the furnace (9), said burner (1) comprising a frame member (6) provided with an elongated combustion head (2) protruding from said frame member (6) and being adaptable inside the furnace (9), what in a view from the burner's (1) frame member (6) is a distal end (2a) of said combustion head (2) being adaptable to generate both a main flame (B) and a primary flame (E), said combustion head (2) comprising an outer, larger diameter channel (3) for a mixture (80) of combustion air and fuel, as well as a smaller diameter, inner channel (4), surrounded by said outer channel (3), for primary air (60) as well as for primary gas (70), whereby

the inner channel (4) extends from the burner's frame member (6) to the distal end (2a) and comprises an inner tube (4, 41) for primary gas (70) and an outer tube (4; 42) surrounding said inner tube (4; 41), wherein a flow space (4; 43) for primary air (60) is provided between the outer side of the jacket (41a) of said inner tube and the inner side of the jacket of the outer tube, and which combustion head's (2) outer channel (3) extends from the burner's frame member (6) to the combustion head's distal end (2a) and can be provided with a supply of premixed air-fuel mixture (80) from the burner's frame member (6), or from that section of the combustion head (2) which is associated with the frame member and located, in the flowing direction of the premixed air-fuel mixture (80), upstream of a combustion chamber (90), for generating the main flame B).

In said burner the space delimited by the outer wall (31) of the outer channel (3) and the jacket of the outer tube (42) of the inner channel (4) is constructed as a discharge channel (10) extending from the frame member (6) to the distal end (2a) of the combustion head (2), whereby the discharge end (10a) of said discharge channel is veered away from the longitudinal center line (P) of the combustion head (2) so that the center line (10A) of said discharge end (10a), or an extension thereof, forms an inclined angle of incidence (t) with the combustion head's (2) longitudinal center line (P), said angle of incidence (t) being 90-140 degrees as said discharge end (10a) of the discharge channel (10) is viewed from the direction of the burner's (1) frame member (6),

a flow controller (7) is provided in the flow space (4; 43) for primary air, at the distal end (2a) of the combustion head (2), for directing the flow of primary air (60) in the flow space (43) so that the primary air (60) flows from the flow controller (7) towards the mouth (43a) of the flow space (43), in the vicinity of the jacket (42a) of the outer tube (4; 42) of the inner channel (4),
a plurality of nozzles (8) is provided in the inner tube (4; 41) of the inner channel (4), at the distal end (41a) of said inner tube (4) in the flowing direction of the primary gas (70), for directing the primary gas (70) into the flow space (4; 43), either upstream or downstream of the flow controller (7) in the flowing direction of the primary air (60).

3. 发明授权

US11767974B2 Gas furnace 有权
公开(公告)号：US11767974B2
公开(公告)日：2023-09-26
申请号：US17091188
申请日：2020-11-06
申请人： LG ELECTRONICS INC.
发明人： Janghee Park , Doyong Ha , Yongki Jeong , Jusu Kim , Hansaem Park
IPC分类号： F23D14/02 , F23D14/62
CPC分类号： F23D14/02 , F23D14/62 , F23D2203/007 , F23D2203/105
摘要： A gas furnace according to an embodiment of the present disclosure includes: a mixer for mixing air and a fuel gas, which are introduced through an intake pipe and a manifold, respectively, to form a mixture; a mixing pipe through which the mixture, having passed through the mixer, flows; a burner assembly for producing a combustion gas by burning the mixture having passed through the mixing pipe; and heat exchangers through which the combustion gas flows, wherein the burner assembly includes: a plurality of burners, to which a flame produced during combustion of the mixture is anchored; a mixing chamber serving as a medium for delivering the mixture from the mixing pipe to the burners. Accordingly, a full premixing mechanism may be provided, and a mixing rate of the fuel gas and the air may be maximized, thereby greatly reducing nitrogen oxide emissions. Further, the burner assembly includes a uniform guide disposed inside the mixing chamber and allowing the mixture to be uniformly distributed to each of the plurality of burners, thereby preventing an increase in local flame temperature, and greatly reducing nitrogen oxide emissions.

4. 发明授权

US11754283B1 Flare gas system 有权
公开(公告)号：US11754283B1
公开(公告)日：2023-09-12
申请号：US17227673
申请日：2021-04-12
申请人： David Bacon
发明人： David Bacon
IPC分类号： F23C7/00 , F23G7/08 , F23L5/02 , F23D23/00 , F23D14/58
CPC分类号： F23G7/085 , F23D14/58 , F23D23/00 , F23L5/02 , F23D2203/007 , F23G2209/141
摘要： The flare gas system has a flare gas assembly having an air pipe with an open upper end, a first conduit in surrounding relationship to the air pipe and having a first conduit open upper end, a second conduit in surrounding relationship to the first conduit and having a second conduit upper end, and a third conduit in surrounding relationship to the second conduit and having a third conduit upper end, the upper ends of the air pipe, the first conduit and the second conduit being below the upper end of the third conduit, there being an air source connected to the air pipe to provide air to the air pipe at a desired flow rate. There is at least one second flare gas assembly operatively connected to the first flare gas assembly, the second flare gas assembly having a tubular housing in which is mounted a spring biased orifice plate, the tubular housing being in open communication with the annulus formed below the second and third conduits.

5. 发明授权

US10845055B2 Fuel nozzle assembly, and combustor and gas turbine including the same 有权
公开(公告)号：US10845055B2
公开(公告)日：2020-11-24
申请号：US16015187
申请日：2018-06-22
申请人： DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
发明人： Ujin Roh , Jongho Uhm
IPC分类号： F23R3/10 , F23R3/28 , F23D23/00 , F23R3/46 , F23D14/82 , F23R3/14 , F23D14/62 , F23R3/04 , F23R3/00
CPC分类号： F23R3/286 , F23D14/62 , F23D14/82 , F23D23/00 , F23R3/002 , F23R3/045 , F23R3/10 , F23R3/14 , F23R3/46 , F23D2203/007 , F23D2209/10 , F23D2900/14701
摘要： A fuel nozzle assembly includes an inner fuel nozzle; a plurality of outer fuel nozzles disposed radially around the inner fuel nozzle, each outer fuel nozzle including a central body for fuel injection, a shroud spaced apart from and surrounding the central body, the shrouds forming an outer periphery of the fuel nozzle assembly, and an inlet formed at one end of the shroud; and a peripheral rim formed at the inlets and disposed to cover at least a portion of the outer periphery. The fuel nozzle assembly is connected to an end plate of a combustion chamber. The one end of a corresponding shroud is disposed at a set distance from an end plate of a combustion chamber, the set distance depending on at least one of relative positions of the inner fuel nozzle and the plurality of outer fuel nozzles and an inlet radius of the corresponding shroud.

6. 发明申请

US20180259179A1 Gas-Air Mixer Assembly 审中-公开
公开(公告)号：US20180259179A1
公开(公告)日：2018-09-13
申请号：US15456058
申请日：2017-03-10
申请人： Lennox Industries Inc.
发明人： Glenn W. Kowald , Charles Post , Ian Burmania
IPC分类号： F23D14/02 , B01F3/02 , B01F5/04 , B01F15/00 , B01F5/06 , B01F15/02 , B23P15/24
CPC分类号： F23D14/02 , B01F3/02 , B01F5/0451 , B01F5/0461 , B01F5/0647 , F23D2203/007 , F23N1/002 , F23N1/005
摘要： A gas-air mixer assembly is described that helps mix fuel and air within an HVAC system. The mixer assembly can also achieve lower pressure drops than seen in other solutions. A mixer assembly can comprise a mixer body through which air is supplied. An orifice body can extend into the stream of air within the mixer body and then point upstream. A tip of the orifice body, disposed in the airstream, can provide fuel through one or more orifices. The flow of air around the orifice body helps to cause mixing, as does an elbow bend in the mixer body, downstream of the orifice body.

7. 发明申请

US20180202654A1 GAS BURNER SYSTEM FOR A PLURALITY OF GAS TYPES 审中-公开
公开(公告)号：US20180202654A1
公开(公告)日：2018-07-19
申请号：US15407638
申请日：2017-01-17
申请人： Martin BRICE , Stephan RICHTER , Eddie WILSON , Tharwat SAAD
发明人： Martin BRICE , Stephan RICHTER , Eddie WILSON , Tharwat SAAD
IPC分类号： F23D14/20
CPC分类号： F23D14/20 , F23D14/64 , F23D2203/007 , F23K5/007
摘要： The present invention is a system that utilizes high pressure gas (greater than ½ psig) to control flow rate and gas discharge velocity to enable interchangeability between a plurality of gases without having to change the gas/air mixing venturi size or air opening. A new approach is to use the available incoming higher gas pressure to the appliance then control the volumetric flow rate with the first orifice and then use a second orifice to change the velocity of discharge into the gas/air mixing venturi of the burner and therefore have adjustability of gas air mixing conditions without having to change the burner system or air flow control even when changing between very different fuel gases.

8. 发明授权

US09644839B2 Dual venturi for water heater 有权
公开(公告)号：US09644839B2
公开(公告)日：2017-05-09
申请号：US14381594
申请日：2013-01-22
申请人： KYUNGDONG NAVIEN CO., LTD.
发明人： Jeong Gi Yu
IPC分类号： B01F5/04 , F23D14/04 , F23N3/06 , F23D14/60 , F23D14/62 , F23L3/00 , F24H9/20
CPC分类号： F23D14/04 , F23D14/60 , F23D14/62 , F23D2203/007 , F23L3/00 , F23N3/06 , F24H9/2035
摘要： A dual venturi having a tubular part having primary and secondary passageways, wherein a primary gas inlet is provided on the side wall of the primary passageway; a body part, for opening/closing the flow of secondary air by rotating in horizontal plane and vertical plane directions, the horizontal plane direction being the cross-sectional direction of the tubular part and the vertical plane direction being perpendicular to the horizontal plane; a damper part having a damper part-side secondary gas outlet; a driving part, for rotationally driving the damper part in the horizontal and vertical planes; and a secondary gas inlet, which openly connects selectively to the damper part-side secondary gas outlet on the basis of the rotational position of the damper part, and for forming the rotational shaft of the damper part along with the rotational shaft of the driving part.

9. 发明申请

US20170108213A1 Gas Inlet Fixture and Air Shutter 审中-公开
公开(公告)号：US20170108213A1
公开(公告)日：2017-04-20
申请号：US14883827
申请日：2015-10-15
申请人： Roy N. Voss , Mohammed Shoeb
发明人： Roy N. Voss , Mohammed Shoeb
IPC分类号： F23D14/04 , F23D14/84 , F23N1/00 , F23D14/26
CPC分类号： F23D14/04 , A47J37/0713 , F23D14/045 , F23D14/105 , F23D14/26 , F23D14/64 , F23D14/84 , F23D2203/007 , F23N1/007 , F23N3/007
摘要： A burner assembly including a gas inlet fixture for use with a burner tube, the gas inlet fixture including a plurality of tabs to engage a neck of a gas control valve to improve ignition and center the gas flow down the center of the burner tube.

10. 发明授权

US3814576A Gas burner mounting arrangement 失效
标题翻译：气体燃烧器安装布置
公开(公告)号：US3814576A
公开(公告)日：1974-06-04
申请号：US33871773
申请日：1973-03-07
申请人： LUXAIRE INC
发明人： BROCKHURST W
IPC分类号： F23D14/46 , F23D14/62 , F23D13/40
CPC分类号： F23D14/46 , F23D14/62 , F23D2203/007
摘要： A gas burner mounting arrangement for a burner which is subject to axial displacement relative to the gas supply manifold and the heat exchanger, in which the primary air adjusting shutter for the burner is held in a fixed position, relative to axial movement, on an orifice spud, and the upstream end plate of the burner is then locked to the air shutter by the shutter adjusting screw. The primary air shutter is held in the fixed position against axial movement by a simple friction locking clip.
摘要翻译：一种用于燃烧器的气体燃烧器安装装置，其相对于气体供应歧管和热交换器轴向位移，其中用于燃烧器的一次空气调节闸板相对于轴向运动保持在固定位置上，然后通过快门调节螺丝将燃烧器的上游端板锁定到空气挡板上。主空气挡板通过简单的摩擦锁定夹保持在固定位置，防止轴向运动。

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