51results about How to "Uniform flame" patented technology

The invention discloses a household gas burner, belonging to the part in the household gas kitchen range. The present household gas burner has the complex structure, poor processing precision and big accumulative error in assembling. The household gas burner comprises a nozzle, a gas distributing device, a gas mixing device and a fire lid, and characterized in that the gas distributing device and the gas mixing device are all the integrated structure, wherein the gas distributing device comprises a gas supplying pipe and a distributing chamber, a primary air inlet open is arranged on the distributing chamber, the nozzle is fixed on the orifice of the gas supplying pipe in the distributing chamber; the gas mixing device comprises a mixing pipe, a mixing chamber, a buffer baffle plate and a secondary air inlet slot, the mixing chamber is matched with the distributing chamber, the buffer baffle plate is arranged above the orifice of the mixing pipe in the mixing chamber, the secondary air inlet slot is arranged at the side surface of the gas mixing device. The gas distributing device and the gas mixing device in the invention have no accumulative error in assembling, simple assembling and safe and reliable use.

The invention belongs to the field of pulverized coal combustion and emission performance control, and particularly discloses a flameless graded oxygen-enriched low-NOx combustion method and system. The method comprises the following steps that smoke participating in circulation is divided into three paths, the fuel with the preset mass carried by a primary air pipeline, a secondary air pipeline and a tertiary air pipeline is introduced into a hearth through the primary air pipeline, the secondary air pipeline and the tertiary air pipeline to be combusted, wherein air outlets of the primary air pipeline and the secondary air pipeline are positioned in a main combustion area and an air outlet of the tertiary air pipeline is located in a re-combustion area, and the injection amounts and themass flows of oxygen in air in the air pipelines are controlled so as to control the peroxide coefficient range and the flow characteristic of the main combustion area and the re-combustion area so that a fuel staged oxygen-enriched combustion mode, a fuel-oxygen two-way staged oxygen-enriched combustion mode and a flameless oxygen-enriched combustion mode are achieved. The system comprises a boiler, a flue gas pretreatment module, a chimney, the primary air pipeline, the secondary air pipeline and the tertiary air pipeline. According to the invention, stable and efficient low NOx emission canbe achieved, the ignition characteristic of pulverized coal can be improved, and pulverized coal reburning is promoted.

A fire cupping jar includes a cup portion and a lamp that is provided in the cupping jar. The cupping jar can be repeatedly used without needing to be replenished with alcohol and can use fire capable of providing uniform flame.

The invention belongs to the technical field of heating stoves and relates to a heating stove based on honeycomb ceramic heat accumulators. The heating stove based on the honeycomb ceramic heat accumulators comprises a stove body. A stove chamber is formed in the stove body. A flame outlet is formed in the upper end of the stove chamber. A protective sleeve is arranged in the flame outlet in an embedded mode. The first honeycomb ceramic heat accumulator and the second honeycomb ceramic heat accumulator are arranged in the protective sleeve in an embedded mode. The first honeycomb ceramic heat accumulator is located above the second honeycomb ceramic heat accumulator. The first honeycomb ceramic heat accumulator and the second honeycomb ceramic heat accumulator are separated through a supporting body, and a secondary combustion chamber is formed. The first honeycomb ceramic heat accumulator and the second honeycomb ceramic heat accumulator are each provided with a plurality of through holes formed in the vertical direction. The cross section area of each through hole of the first honeycomb ceramic heat accumulator is smaller than that of each through hole of the second honeycomb ceramic heat accumulator. Fire bars used for supporting fuel are arranged at the bottom of the stove chamber. The lower end of the protective sleeve is suspended above the fuel. A fuel feeding and first air distribution port, a second air distribution port and a third air distribution port are formed in the stove body. By the adoption of the heating stove based on the honeycomb ceramic heat accumulators, the fuel utilization rate is increased, the pollutant discharge amount is decreased, energy is saved, and environmental friendliness is achieved.

The invention discloses a stove burner. The stove burner comprises a base, a burner cap set, a gas mixing chamber and a plurality of injection pipes, wherein the top and the bottom of the gas mixing chamber are connected to the burner cap set and the base correspondingly and form three gas cavities, and the injection pipes are connected below the base and communicate with the three gas cavities; the burner cap set comprises an inner ring burner cap, a middle ring burner cap and an outer ring burner cap which are sequentially arranged from inside to outside, the inner ring burner cap uses an atmospheric combustion mode, and the strength of fire holes is 6-6.5 W/mm<2>; the outer ring burner cap uses an infrared combustion mode, and the strength of fire holes is 0.3-0.8 W/mm<2>; and the middle ring burner cap uses a half-atmosphere and half-infrared combustion mode, and the strength of fire holes is 2.5-3 W/mm<2>. According to the stove burner, burner cap structures with different three-ring burning modes are arranged, so that flame radiation energy of the burner is greatly increased, the defect that the temperature of a traditional stove with a single burning mode is not uniform is overcome, the heat efficiency of the burner is improved, and the heat loss is reduced.

The invention discloses a hot blast furnace device for blast furnace iron making. The hot blast furnace device for blast furnace iron making comprises a furnace body. A fire grate is arranged at the bottom of the inner wall of the furnace body. A cold air pipe, a waste gas pipe and a hot air pipe are arranged on the side wall of the furnace body. A heat accumulation chamber is arranged in the middle of the furnace body. The top of the furnace body is connected with a vault through a connecting body. The heat accumulation chamber is internally filled with heat accumulation balls. The connectingbody comprises an annular wall. The inner wall of the annular wall is connected with a spraying burner through a connecting pipe. The outer wall of the annular wall is evenly provided with three-waypipes through gas ports. A plurality of nozzles are fixedly arranged on the side face of the spraying burner and the inner wall of the annular wall. A plurality of air deflectors are arranged on the inner walls of the three-way pipes. Gas is evenly scattered into the various nozzles through the three three-way pipes and the air deflectors, and the service life of the nozzles is longer. The spraying burner and the nozzles arranged on the annular wall are used for jointly spraying fire, the heat of the heat accumulation chamber is rapidly increased, and the heat accumulation time is saved. The nozzles downwards obliquely spray fire, the service life of the vault is longer, the heat accumulating balls are adopted in the heat accumulating chamber for heat accumulation, the heat accumulating efficiency is high, and hot air generation is faster.

The invention provides a miniature heat regeneration diffusion type uniform combustion device with a combustion room shrunk gradually. The miniature heat regeneration diffusion type uniform combustion device comprises an ignition device, an outer sleeve, an inner sleeve and an upper panel. The inner sleeve is located in the outer sleeve. The combustion room is arranged in the inner sleeve. A preheating and premixing cavity is formed between the inner sleeve and the outer sleeve. The upper panel is arranged at the top end of the outer sleeve. A porous bottom plate is arranged at the lower end of the inner sleeve. The circumferential wall of the lower portion of the inner sleeve is a porous wall. An upper end opening of the inner sleeve serves as an exhaust opening. The combustion room communicates with the preheating and premixing cavity through the porous wall and the porous bottom plate. A plurality of air inlets and gas inlets are evenly distributed in the top end of the side wall of the outer sleeve in the circumferential direction. The combustion room of the miniature heat regeneration diffusion type uniform combustion device is in a reversely-buckled cylindrical inwards-concave horn shape so that fuel in the combustion room can be diffused, and inner combustion and temperature field distribution can be more uniform. According to the miniature heat regeneration diffusion type uniform combustion device, smoke waste heat is utilized, meanwhile, a porous material is adopted for multi-face air feeding, combustion is strengthened, a temperature field is more uniform, and therefore the power of the device is improved.

An industrial vertical kiln with central burning device in fuel-gas heating mode consists of kiln body, material supplying unit, fuel conveying unit, material output unit, smoke exhausting unit, burning unit and control unit. It is featured as preheating fuel gas and combustion-supporting air by heat exchanger, making casthouse pressure of mixed fuel gas and combustion supporting air be about 10Kpa with temperature being greater than 150deg.c under action of combustion-supporting air fan and then burning preheated- mixed fuel gas and combustion-supporting air in integrated burners.

The embodiment of the invention provides a water-cooling gas furnace core and a vacuum gas-fired hot water boiler comprising the same. The water-cooling gas furnace core comprises a first clamping flange, a heat exchange tube cluster and a second clamping flange, the heat exchange tube cluster is arranged between the first clamping flange and the second clamping flange to jointly form a wall face restraining smoke circulation, the heat exchange tube cluster at least comprises a first heat exchange tube cluster and a radiation heat dissipation tube cluster, and the first heat exchange tube cluster and the radiation heat dissipation tube cluster are arranged on the wall face. And a heat exchange medium is packaged in the heat exchange tube cluster. According to the embodiment, the average heat exchange coefficient can be increased, deep cooling of high-temperature flue gas is achieved, ultralow NOx emission is guaranteed, and meanwhile the heat utilization efficiency is greatly improved.

The invention discloses a multi-spark-plug fuel gas jun porcelain kiln which comprises a kiln body, wherein the kiln body comprises an outer kiln body and an inner kiln body; each of the outer kiln body and the inner kiln body is of a cuboid structure; the inner kiln body is a hollow structure built from refractory bricks; an interlayer space for mounting a spark plug component is formed between the inner kiln body and the outer kiln body; the spark plug components are arranged on the obverse side and the two sides of the inner kiln body; a smoke discharging pipeline stretches out of the backside face of the interlayer space from inside to outside and communicates with an external chimney; the chimney is mounted above the smoke discharging pipeline in a sleeving manner; an inverted funnelshaped structure is arranged at the lower part connecting end of the chimney; and the spark plug components are connected with a fuel air inlet system. Through improving the structure of the multi-spark-plug fuel gas jun porcelain kiln, arrangement of the spark plug is more reasonable; and in addition, the chimney structure is improved, so that the multi-spark-plug fuel gas jun porcelain kiln isfilled with flames to form a reducing atmosphere with negative pressure, and the yield and the appearance artistry of ceramics fired by the multi-spark-plug fuel gas jun porcelain kiln can be improved.

The invention discloses a burner and a gas stove provided with the burners. The burner comprises an inner-ring fire burner body, a middle-ring fire burner body and an outer-ring fire burner body; the middle-ring fire burner body surrounds the outer side of the inner-ring fire burner body, the outer-ring fire burner body surrounds the outer side of the middle-ring fire burner body and comprises an outer-ring mixing cavity and an outer-ring cover plate arranged on the outer-ring mixing cavity in a covering mode, the outer-ring fire burner body is a full premixing burner, the outer-ring cover plate is an infrared radiation plate, and a primary air coefficient a is larger than and equal to 1. According to the burner, the heating efficiency is high, the fire power is even, and the emission quantity of noxious gases is low.