927 results about "Gas burner" patented technology

To suppress backlash of a regulator mounted to an end part on an inflow port side of a mixing pipe made by casting in a gas burner.SOLUTION: A regulator 25 in which an air port 25a is provided on a plane part 25b covering an inflow port is mounted to an end part of the inflow port 20a side of a mixing pipe 20, and fuel gas is injected from a nozzle toward the inflow port. The mixing pipe is divided into a lower member and an upper member, each of which is formed by casting. An outer edge 21b at an end part on the inflow port side of the lower member has a width in a right / left direction that becomes smaller from an upper end toward a lower end, and protrudes to the nozzle side in an inclined manner. An outer edge 22b at an end part on the inflow port side of the upper member has a width in the right / left direction that becomes smaller from a lower end toward an upper end, and protrudes to the nozzle side in an inclined manner. An approximately horizontal flat part 22c is provided in at least one of the lower end of the outer edge at the end part on the inflow port side of the lower member and an upper end of the outer edge at the end part of the inflow port side of the upper member.SELECTED DRAWING: Figure 4

The present invention discloses a gas infrared radiation and hot air dual-mode drying furnace for drying printing inks, which comprises a furnace body housing. Inside the furnace body housing, there are a heating chamber and two machine position chambers. The two machine position chambers are symmetrically distributed at the top and bottom of the heating chamber. An inlet and an outlet penetrating through the furnace body housing are respectively arranged on both sides of the middle of the heating chamber. The present invention heats printing paper through two modes of gas infrared radiation and hot air. Due to the physical properties that infrared rays can penetrate and objects can actively absorb the heat of infrared rays, the ink and the interior of the paper can be quickly heated. In the later stage, the high-temperature flue gas waste gas generated by the front-end gas infrared radiation burner is used, and is guided to the air knife for drying through the hot air circulation mode by a blower and a forced air blower. The gas consumption of the burner is lower, and the heating speed is faster, further reducing the gas energy consumption. Under the condition of the same gas consumption, the speed of the printing press is significantly increased, meeting the requirement of lower gas energy consumption of existing conventional gas burners.

The embodiment of the utility model provides a clothes dryer integrated with a water heating function, and belongs to the technical field of household appliances. Comprising a clothes dryer body and a water heater, the clothes dryer body comprises a shell, a roller rotationally installed in the shell, a smoke channel communicated with an air inlet hole of the roller, an exhaust device, a first gas burner communicated with the smoke channel, a motor, a first gas pipe and a smoke exhaust pipe, and a first control valve is arranged at an air outlet of the first gas pipe; a gas outlet of the first gas pipe communicates with the gas inlet end of the first gas burner, and one end of the smoke exhaust pipe communicates with an air outlet of the air exhaust device. The water heater comprises a second gas burner, a heat exchanger and a second gas pipe, the heat exchanger is arranged at the upper end of the second gas burner, a smoke outlet of the heat exchanger is communicated with the smoke channel, a gas outlet of the second gas pipe is communicated with the gas inlet end of the second gas burner, and a gas inlet of the second gas pipe is communicated with the first gas pipe. And the second gas pipe is provided with a second control valve.

A combustion membrane for a gas burner including a fabric having two opposite fabric surfaces, which form a combustion surface exposed on the outer side and an inner surface facing towards an inner side respectively, where the fabric forms an interlacing of metal wires having warp threads and weft threads transverse to the warp threads, where the fabric has localized first areas with reduced gas permeability, alternated with localized second areas with higher gas permeability than the first areas, and both the first areas and the second areas have an extension, in at least one direction in the plane of the fabric, greater than the space occupied by at least three consecutive warp threads in the weft direction and greater than the space occupied by at least three consecutive weft threads in the warp direction.

An oven 310 comprises an oven chamber 370, a port 350 for a demountable heated air source at a rear of the oven, and a flue 330 from the oven chamber. A first heated air source comprising a gas burner (380, figure 5B) and a variable air inlet 346 for use with a second heated air source which comprises a solid fuel carrier 340 may each be demountably receivable by the port, where only the variable air inlet or the first heated air source can be received by the port at the same time. An air flow director 374 may have an upper portion extending downwards, a rear surface that faces the rear of the oven, and a lower portion which directs air flowing down the rear surface more rearwardly, where the air flow director deflects heated air away from the flue and downwards towards the cooking surface. The flue may comprise a valve configured such that, when in a closed position, an open cross-sectional area of the flue through which air can flow out of the oven is at least 25% of the open cross-sectional area of the flue when the valve is in an open position.

This present invention relates to a single body air treatment system for recreational vehicles and is a combination of components working in a scheme so to provide heating, cooling, dehumidification, ventilation, air-purification, heavy-duty drying, into a single body. The system comprising of a cooling air plant having a refrigerating cycle (105,107,108,109) and air heat exchangers acting with electricity and a heating plant having an incorporated fuel / Natural-Gas burner (118,119) acting as air furnace. The system operates heating and cooling simultaneously with in the same air-flow and provides air purification through an antibacterial electrical device. The system also integrates extra pipes to produce extra hot-water in winter while the system operates in heating. The system is integrated with a dedicated resonator chamber to minimize the external noise produce by extraction blowers.

The invention relates to a solid oxide fuel cell (SOFC) electric pile module testing system and an operation method of the SOFC electric pile module testing system. Comprising an SOFC stack module, an air preheater, a fuel preheater, a main fan, an anode side fan, a main combustor, a tail gas combustor, a mixed steam generator, a deionized water pump, an anode tail gas back pressure valve, a mass flow controller, a temperature sensor, a pressure sensor, a heat tracing band, a control system, a stop valve, a pipeline and the like. The system is provided with the main combustor and the anode tail gas combustor, and is matched with the air preheater and the fuel preheater, so that high-temperature cathode tail gas and anode tail gas at an outlet of the SOFC pile are recycled, the power consumption of the system is reduced, and the cold impact on a high-temperature SOFC pile module caused by restarting after the system is emergently shut down is reduced; due to the use of the anode tail gas back pressure valve and the mixed steam generator, the safety of the system is improved, and the complexity of the system is reduced; the system is low in power consumption, stable, reliable and high in operability.

The invention provides a flue gas recirculation and staged combustion coupled low-nitrogen gas burner, and belongs to the field of gas burners. The problem that an existing combustor cannot control emission of nitric oxide and has stable combustion performance is solved. Wherein the outlet end of the air channel penetrates through the air sleeve, and the inlet end of the on-duty sleeve penetrates through the air sleeve; the first rotational flow blade is arranged on the air sleeve; the second swirl vane is arranged on the on-duty sleeve; the on-duty flame gas pipe sequentially penetrates through the air channel, the air sleeve and the on-duty sleeve, and the outlet end of the on-duty flame gas pipe is provided with a jet hole group; the outlet end of the outer ring main flame gas pipe penetrates through the outer ring mixing pipe; the multiple outer ring fuel gas and flue gas mixing ejectors are arranged at intervals in the circumferential direction of the air sleeve; the outlet end of the inner-ring main flame gas pipe penetrates through the inner-ring mixing pipe; and the multiple inner ring fuel gas and flue gas mixing ejectors are arranged at intervals in the circumferential direction of the air sleeve. And nitrogen oxide emission can be controlled, and stable combustion is guaranteed.

The application relates to the technical field of gas stoves, in particular to a gas burner and an updraft combustion burner. The gas burner comprises a circumferentially arranged outer ring structure, which comprises an inner ring wall and an outer ring wall, the outer ring structure forms an outer ring flow channel and a mixing cavity which are communicated with each other; an outer ring ejection pipe arranged below the outer ring flow channel, the outlet of the outer ring ejection pipe is communicated with the mixing cavity; and a shunt plate buckled in the outer ring structure, the shunt plate is provided with a first shunt area and a second shunt area, the first shunt area is arranged above the outer ring flow channel in correspondence, and the second shunt area is arranged above the mixing cavity in correspondence. The updraft combustion burner comprises the gas burner. The technical problem that the gas and air of the updraft combustion burner are not mixed sufficiently and the performance of the combustion burner is affected is solved.

A heating system for use with a can dryer or oven includes a gas burner, an electrical heating element, a heating chamber structured to heat cans using air heated by the gas burner and / or the electrical heating element, a circulation system structured to move air from the gas burner and the electrical heating element to the heating chamber, and a control system structured to selectively control the gas burner and the electrical heating element to switch between a first mode where the gas burner and the electrical heating element are active and both heat air provided to the heating chamber and in a second mode where the gas burner is inactive and the electrical heating element is active.

A combustion membrane (14) for a gas burner (2) comprises a fabric or mesh (21) of interlaced metal threads (22), having two opposite interlacing surfaces (19, 20) which form a combustion surface (19) and an inner surface (20) of the fabric / mesh (21), respectively, wherein the metal threads (22) are formed by twisted metal fibers (22) to form a yarn and:the individual metal fibers (22) are shorter than the yarn (22) formed therefrom, and free ends (22″) of the metal fibers (22) protrude divergently from the yarn (22) along its longitudinal extension and make the yarn (22) hairy, andthe metal thread (22) is a yarn (22) of mass per length in the range from 0.8 g / m to 1.4 g / m.

The utility model discloses an efficient organic wastewater evaporation device which comprises a funnel-shaped evaporator, an evaporation chamber is arranged in the funnel-shaped evaporator, a gas pipe, an immersion pipe and a circulation baffle are arranged in the evaporation chamber, the gas pipe is communicated with the immersion pipe, an injection nozzle is arranged on the immersion pipe, the immersion pipe is located in the circulation baffle, and the circulation baffle is communicated with the gas pipe. The circulating baffle is used for improving the gas-liquid mixing and stirring effect. High-temperature flue gas is introduced into the gas pipe, the immersion pipe is immersed in liquid, high-temperature gas in the gas pipe is rapidly mixed with the liquid, subjected to heat exchange and evaporated after being sprayed out of the injection nozzles on the immersion pipe, in the heat exchange process, the liquid formed in the circulating baffle flows upwards and forms evaporated liquid, and descending flow is formed outside the circulating baffle. Liquid flow difference is formed inside and outside the circulating baffle, the effect of stirring liquid can be achieved, the liquid is stirred for heat exchange and evaporation under the effect of the liquid flow difference, and the efficiency of the evaporation device is greatly improved.

A gas-burning pizza oven (100, 300, ) comprising: an oven cavity (120) with an access port to receive food into the oven cavity (120) for cooking, and to remove cooked food, the access port being at a front end of the gas-burning pizza oven; and at least one elongate gas burner (128a, 128b, 228, 328a, 328b, 428, 528 ).

The utility model discloses a biomass gas combustion system capable of accurately controlling combustion. The system comprises a biomass gas burner, a biomass gas pipeline connected with the burner, an air blower, an air supply pipeline connected with the air blower and the burner, a tar collecting device in a hearth of the biomass boiler, an oxygen sensor arranged on a smoke exhaust pipeline of the boiler, a controller based on a PLC (Programmable Logic Controller) system, and an air blower frequency converter. Gas component, flow, temperature and pressure measuring devices are arranged on the biomass gas pipeline, and flow and temperature measuring devices are arranged on the air supply pipeline. The controller calculates the oxygen amount needed by biomass gas combustion and the oxygen amount provided by the air blower according to data fed back by the measuring device, and controls the air blower frequency converter to adjust the air amount of the air blower under correction of data fed back by the oxygen sensor on the boiler smoke exhaust pipeline, so that combustion is accurately controlled under the condition of partial load of the boiler, and the combustion efficiency is improved. The combustion efficiency is improved, and the pollutant emission is reduced.

The invention discloses a low-nitrogen gas burner suitable for various working conditions and a using method of the low-nitrogen gas burner. The low-nitrogen gas burner comprises an assembly cylinder, an outer-layer fire pan, a central fire pan, an inner-layer gas gun, an outer-layer gas gun and an oxygen gun. The height of the center fire pan is adjusted through the lifting assembly, and switching of three modes of air combustion supporting, oxygen-enriched combustion supporting and pure oxygen combustion supporting is achieved. The air adjusting assembly controls the combustion-supporting air flow; the flow comprehensive adjusting assembly adjusts fuel gas supply and oxygen supply in a linkage mode. The combustor adopts a staged combustion design, the inner-layer gas gun forms first-stage flame at a fire pan gap, the outer-layer gas gun and a combustion-supporting medium ejected from the central fire pan form second-stage combustion, and the temperature of the flame is reduced by ejecting hearth smoke. Cooperative control over all the executing mechanisms is achieved through the driving motor and the speed setting assembly, the beneficial effects that combustion modes are automatically switched, the flame temperature is accurately regulated and controlled, and emission of oxynitride is low are achieved, and the clean combustion requirements of different industrial furnaces can be met.

The invention discloses a multi-angle micro-pipe staged combustion rotational flow gas burner, and relates to the technical field of industrial burners and low-nitrogen combustion. According to the low-nitrogen combustor, the problem that the combustion stability and the nitrogen oxide emission control level are difficult to optimize at the same time due to the fact that an existing low-nitrogen combustor cannot achieve fuel uniform distribution on the microscale is solved. The device comprises an on-duty flame system, a main flame system, an air supply channel and a flue gas recirculation structure, the on-duty flame system realizes multi-angle uniform injection of fuel through a multi-angle fuel distribution device to form stable central on-duty flame; the main flame system realizes fuel grading through an inner and outer ring mixing pipe; the flue gas recirculation structure introduces backflow flue gas into the combustion area through the flaring of the mixing pipe and the entrainment opening of the arc-shaped air sleeve, the backflow flue gas is mixed with air or fuel gas, and the combustion temperature and the oxygen concentration are effectively reduced. Through the synergistic effect of staged combustion and flue gas recirculation, the effects of stable combustion, uniform flame and low NOx emission are achieved.

The invention relates to a gas burner (1) to burn a combustible gas in a cooking hob (2), comprising a burner housing (4), which can rest on a cooking plate (101) of the cooking hob (2) and / or be fixed to the same, a burner cover (5), which can rest on the burner housing (4), thereby delimiting a distributing chamber (7) between the burner housing (4) and the burner cover (5), a mixing tube (21) communicating the distributing chamber (7) with a mixing section (8) provided next to the burner housing (4) and extending from the mixing tube (21) to mix the combustible gas with a primary air, and wherein the gas burner (1) further comprises a gas injector (10), arranged on the other side of the mixing section (8), provided to inject the combustible gas into a mixing space (12) of the mixing section (8), and the mixing section (8) has at least one primary air inlet (13) giving access into the mixing space (12) to the primary air from the surroundings (14) of the mixing section (8). To guarantee a stable primary air and combustible gas mixture, the mixing space (12) is delimited by a mixing wall (22), where the at least one primary air inlet (13) is arranged, a tube side (23), which is connected with a tube end (24), and an injector side (11) connected with the gas injector (10), and the at least one primary air inlet (13) is bored into the mixing wall (22). Furthermore, the invention relates to a cooking hob (2) with such a gas burner (1), as well as to a gas stove (100) with such a gas burner (1) and / or with such a cooking hob (2).

A cooktop appliance and a gas burner assembly are provided. The gas burner assembly is positioned at a top panel and includes an annular burner body positioned at a top surface of the top panel. The annular burner body forms a central combustion zone, a plurality of flame ports at the central combustion zone, and an annular mixing chamber upstream from the plurality of flame ports to permit a fuel-air mixture to flow into the central combustion zone through the plurality of flame ports. An annular burner base forms a bottom wall of the mixing chamber and an annular burner head forms a top wall of the mixing chamber. A puck including a domed projection separably positioned at the top surface of the top panel and extending toward the central combustion zone.

The utility model discloses a high-hydrogen fuel gas burner, which is characterized in that the front end of a machine body is connected with a burning pipe, the upper end of the machine body is respectively provided with two groups of gas inlets, the upper ends of the gas inlets are respectively provided with a connecting pipe, the other end of the connecting pipe is respectively connected with a Y-shaped shunt pipe, and the other end of the Y-shaped shunt pipe is connected with a gas inlet pipe; and the other end of the gas inlet pipe is connected with a hydrogen source. According to the high-hydrogen fuel gas burner, the gas inlet pipe is evenly divided through the Y-shaped flow dividing pipe, and hydrogen and the machine body form a communicating structure through the connecting pipe, so that the hydrogen evenly enters the burner from different gas inlets through the Y-shaped flow dividing pipe, and then the conditions of hydrogen explosion and the like caused by combustion of the hydrogen at the same position are avoided; according to the device, the machine body and the dust collecting box form a communicating structure through the through hole, and the blocking cover and the dust collecting box form a clamping limiting structure, so that impurities generated during hydrogen combustion can enter the dust collecting box through the through hole, and the situation that too many impurities are accumulated in the combustor to affect the hydrogen combustion efficiency is avoided.

The invention discloses a natural gas hydrogen-doped gas burner, which adopts a two-stage gas and three-stage air distribution structure, first-stage mixed gas pipes are uniformly arranged on an inner ring in a multi-ring manner, the first-stage mixed gas and first-stage air are subjected to micro-mixing combustion, and second-stage combustion devices are uniformly arranged on the peripheries of the first-stage mixed gas pipes; secondary fuel and secondary air are subjected to diffusive combustion, and a third-stage over fire air channel is arranged on the same ring, so that air classification is enhanced; two-stage fuel gas can be evenly mixed with air through the multi-stage micro-mixing device, multiple strands of evenly-combusted small flames are formed at an outlet of the combustor, ignition and stable combustion of the fuel gas are guaranteed, local high temperature is avoided, air classification is combined, multi-stage combustion is achieved, generation of thermal NOx is reduced, high-power efficient mixed combustion of hydrogen and natural gas can be achieved, and the combustion efficiency is improved. The application range is wide.

To significantly improve the combustion of a fuel gas containing at least 95% hydrogen by volume in a gas burner (10) for heating purposes, a burner body (16) for the gas burner (10) has been proposed, which, as a burner surface (38) for the passage of a premixed fuel gas-air mixture into a combustion chamber (14), has a perforated metal surface (40) which has through holes (48) such that less than 5% of the burner surface (38) is open. wherein the through holes (48) have hole diameters D with 0.4 mm ≤ D ≤ 1.0 mm, wherein the hole diameters D and / or hole lengths of the through holes vary.

The utility model provides a gas device for preventing flame from burning an igniter, which relates to the technical field of gas burner equipment and comprises a middle-layer shell, a mounting piece is fixedly connected between the inner surface walls of the middle-layer shell and close to the right side, and sliding rods are symmetrically and fixedly connected between the right surface of the mounting piece and the inner surface wall of the right side of the middle-layer shell. According to the electronic igniter, in the process that the electronic igniter is driven to move leftwards under the cooperation of the push button and the installation shell spring, the electronic igniter can be started through the cooperation of the protruding block inserting sleeve and the symmetrical protruding blocks, and meanwhile the ignition needle can enter the fire gathering cover through the through hole to ignite combustible gas; after the push button is loosened, the electronic igniter and the ignition needle can be driven to reset under the action of the spring, and the reset electronic igniter and the reset ignition needle can be far away from burning flames, so that the electronic igniter is effectively prevented from being damaged by the temperature generated during burning of combustible gas, and the service life of the electronic igniter is greatly prolonged.

To inhibit resonance sound occurring from flame in a gas burner in which a plurality of flame holes are open in a circumferential direction of an outer peripheral surface of a flame hole forming member which can be divided vertically.SOLUTION: In a gas burner, a plurality of first grooves 21e are provided recessed on the upper end side of a first annular wall 21d at a first forming member 21 located at the lower side of a flame hole forming member 20 and each space between the adjacent first grooves is formed as a first protruding part 21k. On the other hand, a plurality of second grooves 22b are provided recessed on the lower end side of a second annular wall 22a at a second forming member 22 located at the upper side and each space between the adjacent second grooves is formed as a second protruding part 22k. The gas burner is provided with: divided portions in each of which a first flame hole 20Ua, defined by the first groove and a lower end of the second protruding part when the first protruding part and the second protruding part come into contact with each other in a state that the second forming member is placed on the first forming member in a manner that these forming members are offset from each other in a circumferential direction so as to prevent the first grooves and the second grooves from overlapping with each other, is divided from a second flame hole 20Ub defined by the second groove and an upper end of the first protruding part; and connection portions in each of which the first protruding part and the second protruding part are not in contact with each other to form a gap G therebetween to allow the first flame hole and the second flame hole to be connected through the gap.SELECTED DRAWING: Figure 6

The invention relates to a high-carbon-content mixed gas burner which comprises a connecting main pipe, a gas inlet pipe and a gas outlet pipe. The gas branch pipes are fixedly connected to the outer wall of the connecting main pipe in the circumferential direction, the interior of each gas branch pipe is communicated with the interior of the connecting main pipe, and a gas spraying hole is formed in the outlet end of each gas branch pipe; the steam supply assembly is arranged below the gas branch pipe and used for supplying steam to the combustor; each air distribution leading-in sleeve is correspondingly arranged outside the corresponding fuel gas spraying hole in a sleeving mode, and a mixing cavity is formed between each air distribution leading-in sleeve and the corresponding fuel gas spraying hole; according to the invention, the air distribution lead-in sleeve is arranged at the outlet of the multi-path gas branch pipe, the air distribution lead-in sleeve and the gas spray hole form the special mixing chamber, and the steam supply assembly is arranged below the special mixing chamber, so that steam and high-carbon gas are fully premixed before combustion by utilizing an injection effect, and the mixing uniformity and the reaction efficiency are remarkably improved.

The object of the present invention is a control method for verifying the presence of the flame in the combustion chamber (41) of a premixed gas burner (1), fed by an air and gas mixture mainly and / or essentially comprising hydrogen H2. The method is based on the use of at least one temperature sensor (6), the values whereof are sent to a control device (8) which uses them to calculate the derivative T′ over time of the temperature T to compare it to suitable feedback thresholds (Tau1, Tau2; Tau3, Tau4) to establish the ignition occurred, the ignition failure or flame extinguishment.

The invention provides a gas burner and a heating cooker equipped with the gas burner, wherein the gas burner suppresses shaking of a regulator installed at the end part of the inflow port side of a cast mixing pipe in the gas burner. A regulator having an air port in a planar portion covering the inflow port is attached to the inflow port-side end of the mixing tube, and fuel gas is injected from the nozzle toward the inflow port. The mixing tube is divided into a lower member and an upper member, which are formed by casting processing, respectively. The outer edge of the end portion of the inflow port side of the lower side member decreases in the left-right width from the upper end toward the lower end and protrudes and inclines toward the nozzle side, and the outer edge of the end portion of the inflow port side of the upper side member decreases in the left-right width from the lower end toward the upper end and protrudes and inclines toward the nozzle side. In addition, at least one of the lower end of the outer edge of the end portion of the inflow port side of the lower side member and the upper end of the outer edge of the end portion of the inflow port side of the upper side member is provided with a substantially horizontal flat portion.

The present application relates to a kind of textile gas setting machine of configuration oxygen-rich control wet energy-saving system, the oxygen-rich control wet energy-saving system, including: oxygen-rich oxygen generator, with the one-to-one correspondence setting of gas burner on the textile gas setting machine, for generating oxygen-enriched air;Three-way bypass and bypass valve, with the one-to-one correspondence setting of gas burner, one end is communicated the oxygen-enriched air outlet of oxygen-rich oxygen generator, the other end is communicated the pipeline between corresponding gas burner and gas access solenoid valve on textile gas setting machine;High-temperature humidity sensor, with the one-to-one correspondence setting of each air draft section of the air draft branch pipe on the textile gas setting machine, for obtaining the exhaust gas discharge humidity parameter of setting machine section;Variable frequency control induced draft fan, replace the induced draft fan corresponding to the air draft branch pipe;Controller, with the variable frequency control induced draft fan, high-temperature humidity sensor connection;With the starting switch of connected gas burner, the oxygen-rich machine vacuum pump frequency converter circuit connection.

The invention belongs to the technical field of ferrous metallurgy, and relates to a reducing gas heating system and process for hydrogen metallurgy, the system comprises a heating furnace, a hydrogen-based shaft furnace, a decarburization device and gas connecting pipelines among the devices; the heating furnace is used for preheating reducing gas and supplying the reducing gas to the hydrogen-based shaft furnace; reaction gas generated by the hydrogen-based shaft furnace is decarbonized by a decarbonization device to generate reducing gas and decarbonized tail gas; a burner is arranged on the heating furnace and is respectively connected with decarburized tail gas, reaction gas and an external gas pipe; a decarburized tail gas preheater is arranged on a smoke exhaust pipe of the heating furnace; an outlet of the decarburized tail gas main pipe is respectively connected with a decarburized tail gas diffusing pipe and a decarburized tail gas burner supply pipe; a reducing gas pipeline is connected with the heating furnace; the decarburization tail gas burner supply pipe is connected with the decarburization tail gas preheater, and the preheated decarburization tail gas is supplied to a burner of the heating furnace. The byproduct gas in the hydrogen metallurgy process is fully utilized as the fuel of the heating furnace, the energy utilization efficiency is effectively improved, and the production cost is reduced.

The present invention provides a gas burner device and a cooking appliance that can suppress the generation of yellow flames caused by a rapid increase in the burner's heat output. [Solution] When the control means 60 receives an instruction via the heat output instruction means 57 to increase the heat output of the burner 39 from the first heat output to the second heat output, the control means 60 pauses the opening of the gas quantity control valve 55, which adjusts the amount of fuel gas supplied to the burner 39, for a predetermined time or slows down the opening speed of the gas quantity control valve 55 while it is in the process of changing the opening degree of the gas quantity control valve 55 from the first heat output opening degree to obtain the first heat output to the second heat output opening degree to obtain the second heat output.

The utility model discloses a special gas burner for a low-temperature hearth, which belongs to the technical field of burner equipment and comprises a barrel, the barrel is fixed with a bottom plate of a heating furnace, a lower brazier brick is arranged in the barrel, a large round hole and a small round hole are arranged at the bottom of the barrel, the large round hole is connected with a fixed disc, an outer gas gun penetrates through the small round hole, and a central gas gun and an incandescent light are mounted on the fixed disc. The outer gas gun, the center gas gun and the main gas pipeline are communicated through a three-way component, the barrel is provided with an air adjusting butterfly valve for controlling combustion-supporting air, and a heat preservation layer is arranged in the barrel. According to the combustor, the concentration of NOx and CO is adjusted through combination of fuel gas classification, flue gas self-circulation and rich-lean combustion technologies, the problems of high CO emission and unstable combustion of a low-temperature hearth are solved, the combustion efficiency and stability are improved, and the combustor is suitable for heating the low-temperature hearth in the industries such as petroleum refining and the like, meets the requirements for environmental protection and energy conservation and has wide application prospects.