阅读说明：本技术 一种全预混式的燃烧装置 (Fully premixed combustion device ) 是由 许世安 许昌 李士荣 时锋 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种全预混式的燃烧装置,包括有预混烧嘴、空气管路阀组、燃气管路阀组和混合器,所述空气管和燃气管的出口分别连接于混合器入口,所述空气管上设置有用于控制空气管启闭的控制风阀,所述燃气管上按进气方向从前至后排列设置有连接于空气管的空燃比例阀、以及用于控制燃气管启闭的点火电磁阀,所述混合器出口连接于预混烧嘴入口,所述预混烧嘴连接有点火控制器,所述点火控制器连接于点火电磁阀,以达到提高燃烧的安全性之目的,空燃比例阀可使空气和燃气流量按预定燃烧比例保持稳定供给烧嘴,空气与燃气在混合器混合均匀,方可使其通过烧嘴充分燃烧,提高燃烧效率和火焰温度,进而达到高效传热和节能之目的。(The invention discloses a full premix type combustion device, which comprises a premix burner, an air pipeline valve group, a gas pipeline valve group and a mixer, wherein outlets of an air pipe and a gas pipe are respectively connected with an inlet of the mixer, a control air valve for controlling the opening and closing of the air pipe is arranged on the air pipe, an air-fuel proportional valve connected with the air pipe and an ignition electromagnetic valve for controlling the opening and closing of the gas pipe are arranged on the gas pipe from front to back according to the air inlet direction, an outlet of the mixer is connected with the inlet of the premix burner, the premix burner is connected with an ignition controller, the ignition controller is connected with the ignition electromagnetic valve so as to achieve the purpose of improving the combustion safety, the air-fuel proportional valve can ensure that the air and the gas flow are stably supplied to the burner according to the preset combustion proportion, the air and the gas are uniformly mixed in the mixer so as to be fully combusted through the burner, the combustion efficiency and the flame temperature are improved, and the purposes of high-efficiency heat transfer and energy conservation are achieved.)

1. The utility model provides a burner that mixes formula entirely which characterized in that: including premixing nozzle (1), air hose (2), gas pipe (3) and blender (4), the export of air hose (2) and gas pipe (3) is connected respectively in blender (4) entry, be provided with control air valve (21) that are used for controlling air hose (2) to open and close on air hose (2), arrange according to the direction of admission in the past to the back on gas pipe (3) and be provided with air-fuel proportional valve (31) of connecting in gas pipe (2) and be used for controlling ignition solenoid valve (32) that gas pipe (3) opened and close, blender (4) exit linkage is in premixing nozzle (1) entry, premixing nozzle (1) is connected an ignition controller (5), ignition controller (5) are connected in ignition solenoid valve (32) and ignition detection electrode.

2. A full premix combustion apparatus as in claim 1, wherein: the gas pipe (3) is provided with main solenoid valve (33), pressure switch (34) and manometer (35) according to the direction of admitting air from the past to back range, manometer (35) set up in air-fuel proportional valve (31) front end and rear end according to the direction of admitting air.

3. A full premix combustion apparatus as in claim 2, wherein: the main electromagnetic valve (33) and the pressure switch (34) are respectively connected to the ignition controller (5).

4. A full premix combustion apparatus as in claim 1, wherein: the air-fuel ratio valve (31) is including last valve body (311) and lower valve body (312), go up valve body (311) and be provided with outside intercommunication in the inside gas body (313) of last valve body (311), be provided with the valve that control gas body (313) opened and close in the gas body (313), gas body (313) are provided with two pressure display table (314) that are used for detecting gas body (313) import and outlet pressure outward, lower valve body (312) are provided with air pressure feedback pipe (310) of connecting in air pipe (2).

5. A full premix combustion apparatus as in claim 1, wherein: premixing nozzle (1) is lid (11) and nozzle inner tube (13) behind nozzle shell (12), nozzle inner tube (13) set up in nozzle shell (12) inside centre, and connect in blender (4) export, be provided with ignition electrode (121) and detecting electrode (122) in nozzle shell (12), ignition electrode (121) and detecting electrode (122) all extend to nozzle after lid (11), and connect respectively in ignition controller (5).

6. A full premix combustion apparatus as in claim 1, wherein: and a flame backstop (140) is arranged between the mixer (4) and the premixing burner (1) to prevent backfire.

7. A full premix combustion apparatus as in claim 1, wherein: the gas pipe (3) is provided with a manual valve (300) for controlling the gas pipe (3) to open and close.

Technical Field

The invention relates to the technical field of fuel premixing and combustion, in particular to a full premixing type combustion device.

Background

The combustion device is an indispensable core device of high-temperature industrial kiln equipment, and currently, the industrial kiln requires high temperature and uniform temperature performance and stable structure under the condition of combusting different fuels in view of energy conservation and consumption reduction so as to finally achieve the aims of high efficiency, energy conservation, environmental protection and yield increase. Therefore, in the structural design of industrial furnace burners, not only rapid uniform mixing and efficient stable combustion must be realized, but also the regulation and control of the combustion process must be realized aiming at different gas varieties, and at present, no burner can achieve high combustion flame temperature and safe backfire prevention when burning different gas fuels, the air/fuel ratio is difficult to achieve and maintain a sufficient combustion state, and most of the existing combustion devices cannot perform efficient environment-friendly combustion.

Disclosure of Invention

The invention aims to provide a full-premix gas combustion device to achieve the purposes of high efficiency, high temperature, safety, backfire prevention, heat loss reduction, accurate adjustment of air/fuel ratio, more complete and more environment-friendly combustion and more meeting the requirements of production processes.

The technical scheme of the invention is as follows: the utility model provides a mix gaseous burner of formula entirely, including premixing nozzle, air conduit valves, gas pipeline valves and blender in advance, the export of air conduit and gas pipeline is connected respectively in the blender entry, be provided with the control blast gate that is used for controlling the air hose to open and close on the air hose, arrange according to the direction of admitting air in the past after to on the gas hose and be provided with the air/board who connects in the air hose

The ignition device comprises a combustion proportional valve and an ignition electromagnetic valve used for controlling the opening and closing of a gas pipe, wherein the outlet of the mixer is connected to the inlet of the premixing burner, the premixing burner is connected with an ignition controller, and the ignition controller is connected to the ignition electromagnetic valve and an ignition detection electrode.

Preferably, the gas pipe is provided with main solenoid valve, pressure switch and manometer according to the direction of admitting air from the front to back range, the manometer sets up in air-fuel proportional valve front end and rear end according to the direction of admitting air.

Preferably, the main solenoid valve and the pressure switch are respectively connected to an ignition controller.

Preferably, the air-fuel proportional valve is including last valve body and lower valve body, go up the valve body and be provided with the gas body that feeds through in last valve body inside outward, be provided with the valve that control gas body opened and close in the gas body, the gas body is provided with a plurality of pressure display meters that are used for detecting gas body import and outlet pressure outward, the valve body is provided with the pressure feedback pipe of connecting in the air hose down.

Preferably, the premixing burner comprises a burner shell, a burner rear cover and a burner inner pipe, the burner inner pipe is arranged in the middle of the inside of the burner shell and connected to the outlet of the mixer, an ignition electrode and a detection electrode are arranged in the burner shell, the ignition electrode and the detection electrode extend to the burner rear cover and are respectively connected to the ignition controller.

Preferably, a flame backstop is arranged between the mixer and the premixing burner.

Preferably, a manual valve for controlling the opening and closing of the gas pipe is arranged on the gas pipe.

Compared with the prior art, the fully premixed combustion device has the beneficial effects that: 1. through the setting of blender, it mixes fully in the blender before air and gas get into the nozzle in advance, and through the setting of air/fire proportional valve, make air and gas get into the premixer according to the burning proportion, through the blender misce bene, connect the nozzle in advance through the ignition control box, the setting of ignition detecting electrode and ignition solenoid valve, make the ignition control box, the nozzle in advance and ignition solenoid valve form the current path, air pipe and gas pipe are connected to the air-fuel proportional valve of setting, the proportion of control air and gas entering is adjustable.

2. The air/fuel proportional valve can enable the proportion of air and fuel gas to be kept stable, and the air and the fuel gas stably enter the mixer according to a preset precise proportion, the air and the fuel gas are uniformly mixed in the mixer, so that the air and the fuel gas are fully combusted in the premixing burner, the combustion speed is improved, the instantaneous combustion can be finished, a large amount of heat energy is released, and meanwhile, due to the full combustion, the generation of nitrogen oxides is better planned, so that the energy-saving and environment-friendly burner is energy-saving and environment-friendly.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:

FIG. 1 is a schematic structural diagram of the present invention. Fig. 2 is an enlarged view at a.

Fig. 3 is an enlarged view at B. FIG. 4 is a schematic distribution diagram of the present invention.

In the figure: the burner comprises a premixing burner 1, an air pipe 2, a gas pipe 3, a mixer 4, an ignition controller 5, a premixing burner rear cover 11, a burner shell 12, a burner inner pipe 13, a control air valve 21, an air-fuel proportional valve 31, an ignition electromagnetic valve 32, a main electromagnetic valve 33, a pressure switch 34, a pressure gauge 35, an ignition electrode 121, a detection electrode 122, a flame check 140, a manual valve 300, a feedback pipe 310, an upper valve body 311, a lower valve body 312, a gas pipe body 313 and a pressure display meter 314.

Detailed Description

The invention will be further described with reference to the accompanying drawings in which:

in the description of the present invention, it is to be understood that the terms "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The invention relates to a full premix type gas combustion device, which comprises a premix burner 1, an air pipe 2, a gas pipe 3 and a mixer 4, outlets of the air pipe 2 and the gas pipe 3 are respectively connected with an inlet of the mixer 4, a control air valve 21 for controlling the opening and closing of the air pipe 2 is arranged on the air pipe 2, the air pipe 2 is also provided with a combustion fan, the gas pipe 3 is provided with an air-fuel proportional valve 31 connected with the air pipe 2 and an ignition electromagnetic valve 32 used for controlling the opening and closing of the gas pipe 3 from front to back according to the air inlet direction, the outlet of the mixer 4 is connected with the inlet of the premixing burner 1, the mixer 4 is connected with the premixing burner 1 through a hose, the premixing burner 1 is connected with an ignition controller 5, the ignition controller 5 is connected with an ignition electromagnetic valve 32, and the mixer 4 can be provided with a plurality of premixing burners 1.

The invention relates to a full premix type gas combustion device, wherein air and gas are fully mixed in a mixer 4 before entering a premix burner 1 through the arrangement of the mixer 4, the air and the gas enter the premixer according to the combustion proportion (for example, natural gas: air is 1: 10) through the arrangement of an air-fuel proportional valve 31, the air and the gas are uniformly mixed through the mixer 4, the ignition control box is connected with the premix burner 1 and the ignition electromagnetic valve 32, so that a current path is formed by the ignition control box, the premix burner 1 and the ignition electromagnetic valve 32, the arranged air-fuel proportional valve 31 is connected with an air pipe 2 and a gas pipe 3, and the entering proportion of the air and the gas is controlled;

in order to improve the combustion temperature, accelerate the temperature rise, save energy, protect environment and reduce thermal inertia, the air-fuel proportional valve 31 can keep the air flow and the gas flow in proportion and stably supply the air flow and the gas flow to the mixer 4, the air and the gas are uniformly mixed in the mixer 4, so that the air and the gas are fully combusted in the premixing burner, the combustion speed is improved, the instant combustion can be finished, and the high-efficiency, energy-saving and environment-friendly combustion effect is achieved.

In this embodiment, as shown in fig. 4, the gas pipe 3 is provided with a main electromagnetic valve 33, a pressure switch 34 and a pressure gauge 35 in a front-to-rear arrangement in the air intake direction, and the pressure gauge 35 is provided at the front end of the air-fuel ratio valve 31 in the air intake direction.

In this embodiment, the main solenoid valve 33 and the pressure switch 34 are connected to the ignition controller 5, respectively.

In this embodiment, the air-fuel ratio valve 31 includes an upper valve body 311 and a lower valve body 312, a gas pipe body 313 communicated with the inside of the upper valve body 311 is disposed outside the upper valve body 311, a valve for controlling the opening and closing of the gas pipe body 313 is disposed inside the gas pipe body 313, a plurality of pressure display meters 314 for detecting the inlet and outlet pressures of the gas pipe body 313 are disposed outside the gas pipe body 313, and the lower valve body 312 is provided with a feedback pipe 310 connected to the air pipe 2.

Specifically, a pulling mechanism is provided in the lower valve body 312, the pulling mechanism is connected to the air valve, the pressure in the air pipe 2 is changed by adjusting the control air valve 21, an air pressure adjusting signal is transmitted to the air-fuel proportional valve 31 through the feedback pipe 310, and the air-fuel proportional valve 31 automatically changes the gas pressure through the air valve accordingly, so that the ratio of the gas to the air is consistent.

In this embodiment, premixing nozzle 1 is including lid 11 and nozzle inner tube 13 behind nozzle shell 12, the nozzle, nozzle inner tube 13 sets up in the inside centre of nozzle shell 12, and connects in the export of blender 4, be provided with ignition electrode 121 and detecting electrode 122 in the nozzle shell 12, ignition electrode 121 and detecting electrode 122 all extend to nozzle back lid 11, and connect respectively in ignition controller 5.

Specifically, during use, the ignition electrode 121 and the detection electrode 122 are connected, the ignition controller 5 is connected to form a current path, the ignition controller 5 is connected to the ignition solenoid valve 32, flame generates current, the current is amplified through the detection electrode 122, the current turns on the ignition solenoid valve 32 to enable gas to enter continuous gas supply, and when the flame extinguishes the current, the ignition controller 5 controls the ignition solenoid valve 32 to be closed to enable the gas pipe 3 to cut off the gas supply.

In this embodiment, a flame backstop 140 is disposed between the mixer 4 and the premix burner 1.

In this embodiment, the gas pipe 3 is provided with a manual valve 300 for controlling the opening and closing of the gas pipe 3.

The working principle of the fully premixed gas combustion device is as follows, a gas pipe 3 and an air pipe 2 are respectively connected with gas and air, the air pipe 2 is adjusted by a control air valve 21, an air-fuel proportional valve 31 on the gas pipe 3 detects the pressure of the air pipe 2 to automatically adjust the gas pipe 3, so that the gas and the air are stably supplied in a preset proportion, the gas and the air are proportionally and jointly fed into a mixer 4 to be uniformly mixed, the air-fuel mixture is fed into a premixing burner 1, the combustion is controlled by an ignition controller 5, the flame generates current, when the flame is extinguished, the current is cut off, and the ignition controller 5 controls an ignition electromagnetic valve 32 to be closed, so that the gas pipe 3 is cut off to supply gas.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.