2500 results about "Gas stoves" patented technology

The invention relates to the technical field of kitchen safety monitoring, and discloses a kitchen gas stove abnormity early warning system based on infrared thermal imaging multispectrum. The system comprises an infrared thermal imaging acquisition module, a dynamic feature extraction module and an abnormal behavior identification module. The infrared thermal imaging acquisition module synchronously captures the surface temperature field distribution of the gas cooking range through a multispectral infrared sensor array, obtains flame form data in combination with a visible light image, and generates a multi-channel fused infrared thermal imaging characteristic spectrum through processing. The dynamic feature extraction module adopts a three-dimensional convolution kernel to scan continuous time sequence frames, identifies flame morphological feature differences, calculates thermal radiation intensity energy distribution offset, and outputs dynamic feature vectors. The abnormal behavior recognition module extracts a correlation mode through a deep residual network, compares current features with a historical normal working condition feature library, and generates a preliminary early warning signal containing an abnormal type code and a risk level when the attenuation rate of flame spectral energy in a specific infrared band exceeds a first threshold value.

The invention discloses an efficient pulsating heat pipe air pre-heater gas stove, and relates to the technical field of gas stoves. The air pre-heater comprises an air pre-heater body, a pulsating heat pipe and an air supply pipeline, the pulsating heat pipe is embedded in an inner cavity of the air pre-heater body, and the bottom of the air pre-heater body communicates with the top of the air supply pipeline; the air pre-heater body comprises a heat insulation radiation cavity and an air pre-heating cavity. The heat transfer efficiency of the pulsating heat pipe is far higher than that of traditional metal heat conduction, heat of high-temperature flue gas can be rapidly absorbed, waste heat loss is reduced, the heat efficiency is improved, secondary air is heated through the air preheater, the temperature of the secondary air is increased, the combustion temperature is increased, gas combustion is more sufficient, emission of carbon monoxide and nitric oxide is reduced, and the energy-saving and environment-friendly effects are achieved. The pulsating heat pipe has the unique advantages of being small and exquisite in structure, flexible in arrangement and efficient in heat transfer, and the heat efficiency of the gas stove is effectively improved through the L-shaped pulsating heat pipe heat insulation air pre-heater structure.

The invention provides a combustion control method for a commercial gas stove. The combustion control method comprises the following steps: acquiring post-combustion gas component data acquired by a gas component sensor; gas component data obtained after combustion serve as feedback quantity, the error between the feedback quantity and a preset expected value is calculated, combustion control parameters are calculated through a closed-loop control algorithm on the basis of the error, and the combustion control parameters comprise the opening degree of a main fire gas valve and / or the rotating speed of a first draught fan; and the air supply amount and / or the air supply amount of the main fire combustor are / is adjusted according to the combustion control parameters. The invention further provides a combustion control device and system for the commercial gas stove and the commercial gas stove. According to the invention, the mixing ratio of the air and the fuel gas is adaptively adjusted by detecting the gas component data after combustion and combining a closed-loop control algorithm, so that the combustion efficiency is optimized.

The utility model provides a panel assembly and a gas stove with the same, and belongs to the technical field of kitchen appliances, the panel assembly comprises a glass panel, a heat dissipation assembly and a fan assembly, the heat dissipation assembly is connected below the glass panel, at least two heat dissipation flow channels are arranged between the heat dissipation assembly and the glass panel, and the fan assembly is connected with the glass panel. Each heat dissipation flow channel is provided with an air inlet end communicated with the outside; the air inlet end of the fan assembly communicates with the air outlet end of the heat dissipation flow channel, the air outlet end of the fan assembly communicates with the outside, and the fan assembly can drive cold air to enter the heat dissipation flow channel and take away heat of the glass panel. According to the utility model, rapid heat exchange and cooling can be carried out on the glass panel, and the glass panel is prevented from self-explosion at high temperature or scalding a user.

The invention relates to a combustor and a gas stove. The combustor comprises a furnace end, a gas inlet and a gas outlet, an inner ring gas mixing cavity and a middle ring gas mixing cavity are defined between the inner ring fire cover and the furnace end, and the middle ring gas mixing cavity is arranged on the periphery of the inner ring gas mixing cavity in a surrounding mode; inner ring fire holes are formed in the top surface of the inner ring fire cover; the outer ring fire cover is arranged on the periphery of the inner ring fire cover in a surrounding mode at intervals, and an outer ring gas mixing cavity is defined between the outer ring fire cover and the furnace end; a top cover is arranged in the center of the top face of the inner ring fire cover in a protruding mode and covers the top of the inner ring fire hole. An inner ring fire gap is formed between the outer peripheral edge of the top cover and the top face of the inner ring fire cover, the inner ring fire holes are communicated with the inner ring fire gap, fuel gas in the inner ring gas mixing cavity can be combusted at the inner ring fire gap to form inner ring gap fire, flames of the inner ring gap fire are mutually connected, and the good flame stabilizing effect is achieved. And therefore, the flame stability of the combustor under soft fire combustion or extremely soft fire combustion is improved, and the low-temperature cooking requirement is met.

The pot rack comprises a pot rack body and a power device, the pot rack body is annularly arranged and forms a combustion cavity in a surrounding mode, the combustion cavity is used for allowing flame of a combustor to pass through, the pot rack body is further provided with a jet flow channel and an air supply channel, and a jet flow opening of the jet flow channel is located in the upper surface or the peripheral face of the pot rack; an air supply port of the air supply channel is communicated with the combustion cavity; the power device communicates with the jet flow channel and the air supply channel and is used for providing airflow for the jet flow channel and the air supply channel and providing airflow in the direction close to the cooker through a jet flow opening of the jet flow channel, so that smoke between the pot rack body and the cooker can be gathered in the direction close to the cooker; and secondary air is supplemented to the combustion cavity through the air supplementing opening, so that the air content in the combustion cavity can be increased, the fuel is promoted to be combusted more sufficiently, the heat efficiency of the fuel is improved, and the overall heat efficiency of the gas stove is improved.

The embodiment of the utility model discloses a cooking module and an integrated cooker, the cooking module comprises an inner container, a supporting piece and a sheet metal part, and the inner container is provided with a cooking cavity; the supporting piece is connected with the outer wall of the inner container. The sheet metal part is arranged outside the inner container in a surrounding mode and connected with the side, away from the inner container, of the supporting part. Wherein the sheet metal part and the outer wall of the inner container are encircled to form a heat insulation cavity to prevent heat in the cooking cavity from diffusing outwards, so that the probability of damage of the gas stove module and the control module can be reduced, the gas stove module and the control module can have longer service life, and the integrated stove can have longer service life.

The invention belongs to the technical field of household gas stoves, and provides a household infrared stove with high heat intensity and a design method.The stove comprises a valve body and an infrared burner which are sequentially arranged in the airflow direction; according to the valve body, the two independent channels of the main fuel gas channel and the auxiliary fuel gas channel are matched with the main nozzle and the auxiliary nozzle to form a two-strand collision jet flow injection technology, an infrared injection pipe of the infrared burner and the main nozzle are coaxially arranged, and the infrared injection pipe and the auxiliary nozzle are of a non-coaxial structure, so that the injection capacity of the main nozzle is guaranteed, and the service life of the main nozzle is prolonged. The fuel gas injected by the auxiliary nozzle directly rushes to the inner wall of a shrinkage pipe in the infrared injection pipe, and the two jets are injected together; compared with a traditional single-nozzle ejection structure, the amount of ejected air is larger, gas and air are mixed more evenly, the ejection speed of the gas through fire holes of the infrared burner is higher, and the combustion stability is further enhanced in cooperation with the design of the infrared burner and the infrared radiation combustion plate.

The utility model discloses an energy-gathering plate pot rack and a gas cooker, and belongs to the technical field of kitchen appliances. The energy-gathering disc pot rack comprises an energy-gathering disc body, a center through hole used for avoiding a burner is formed in the energy-gathering disc body, the inner diameter of the center through hole is larger than the outer diameter of the burner, so that a secondary air supplementing inlet can be formed between the energy-gathering disc body and the burner in the assembled state, and a secondary air preheating cavity distributed around the center through hole is formed in the energy-gathering disc body; the secondary air preheating cavity is communicated with the secondary air supplementing inlet, a secondary air inlet communicated with the secondary air preheating cavity is formed in the energy gathering disc body, and the upper surface of the energy gathering disc body is made of glass with the melting point higher than the combustion temperature of the gas cooker. And the fully preheated secondary air participates in combustion, so that the temperature field of the high-temperature flue gas can be effectively enhanced, the heat exchange effect with the bottom of the boiler is enhanced, and the combustion heat efficiency is improved.

The invention discloses a gas cooker which comprises a combustor and an ejector, the combustor is provided with a premixing cavity, the premixing cavity is communicated with external gas supply through the ejector, a fire cover is arranged on the premixing cavity in a covering mode, the gas cooker is characterized by further comprising an energy gathering disc, a mounting opening is formed in the middle of the energy gathering disc, and the energy gathering disc is provided with a gas inlet and a gas outlet. The combustor is arranged at the position of the mounting opening in a penetrating mode, and a heat insulation cavity and a preheating cavity are sequentially defined by the energy gathering disc from top to bottom; the air outlet end of the air blower is communicated with the air inlet end of the preheating cavity; the nozzle seat is arranged on the ejector, a gas distribution channel is limited in the nozzle, one end of the gas distribution channel is communicated with the gas outlet end of the preheating cavity, and the other end of the gas distribution channel is communicated with the ejector. The energy-saving stove is simple in structure, heat emitted downwards can be fully utilized, and meanwhile the energy efficiency of the stove is effectively improved.

The invention relates to a gas stove control device with a fault detection function and a gas stove. The gas stove control device comprises a double-coil electromagnetic valve, a driving circuit, a detection circuit, a controller and an alarm. A main coil of the double-coil electromagnetic valve is connected with a thermocouple, a secondary coil of the double-coil electromagnetic valve is connected with the driving circuit, and the driving circuit is used for outputting driving current to the secondary coil; the detection circuit is connected with two ends of the secondary coil and is used for detecting voltages at two ends of the secondary coil; the controller is connected with the drive circuit, the detection circuit and the alarm and used for controlling on-off of the drive circuit and controlling the alarm to give an alarm according to the voltage, fed back by the detection circuit, of the two ends of the secondary coil. According to the invention, various faults such as open circuit, short circuit and turn-to-turn short circuit of the secondary coil are accurately identified based on the voltages at the two ends of the secondary coil, the alarm gives an alarm to remind a user in time when the fault of the secondary coil is detected, the sensitivity and accuracy of fault detection of the secondary coil are high, and the safety performance is high.

The utility model discloses a fire distributor, a burner and a gas stove. The fire distributor comprises a fire distributing base and a flow distributing piece, an outer ring fire distributing groove and an inner ring fire distributing groove are formed in the upper side of the fire distributing base, the inner ring fire distributing groove is located on the inner side of the outer ring fire distributing groove, an outer ring air inlet hole is formed in the bottom of the left end of the outer ring fire distributing groove, and an inner ring air inlet hole is formed in the bottom of the inner ring fire distributing groove; the groove bottom of the outer ring fire distribution groove is obliquely and upwards arranged from the left end of the outer ring fire distribution groove to the right end of the outer ring fire distribution groove in an extending mode, and the flow dividing piece is arranged on the upper portion of the outer ring fire distribution groove and located above the outer ring air inlet hole. According to the distributor provided by the utility model, the outer ring gas inlet holes are independently formed in the outer ring fire distribution groove, the inner ring gas inlet holes are independently formed in the inner ring fire distribution groove, a flow distribution gas channel does not need to be arranged on the distributor, the material consumption of the distributor is reduced, the cost is further reduced, and outer ring flames have better stability and uniformity.

The invention relates to the technical field of gas stove control, and discloses an induction pot detection energy-saving control method and device for an intelligent gas stove, and the method comprises the steps: detecting whether a pot is moved out of or into the heating range of the intelligent gas stove in the cooking process of using the pot; when the detection result shows that the cookware is moved out of the heating range of the intelligent gas stove, generating a first firepower control parameter of the intelligent gas stove, reducing the firepower of the intelligent gas stove to a first cooking firepower according to the first firepower control parameter, and when the detection result shows that the cookware is moved into the heating range of the intelligent gas stove, reducing the firepower of the intelligent gas stove to a second cooking firepower. And generating a second firepower control parameter of the intelligent gas stove, and increasing the firepower of the intelligent gas stove to a second cooking firepower according to the second firepower control parameter. It can be seen that the fire power of the gas stove can be adjusted in a self-adaptive mode on the basis that the cookware is moved out of or to the heating range, energy loss is reduced, gas is saved, meanwhile, the environment temperature and heat radiation of flames can be reduced, and the cooking experience of a user is improved.

The invention provides a multi-interlayer energy-saving hearth used on a gas stove. In the prior art, a single-layer gas control basin or a welded double-layer gas control basin is used for improving the detection thermal efficiency, but the thermal insulation performance is poor, more heat is lost, and the thermal efficiency is reduced. The multi-interlayer energy-saving hearth comprises an outer hearth and an inner hearth, the outer hearth is in a big-end-up round sleeve shape, the outer hearth is arranged outside a burner of the gas stove in a sleeving mode, the bottom face of the outer hearth is placed on the stove face of the gas stove to be in a closed state, an outer hearth boss is machined on the upper portion of the interior of the outer hearth, and a plurality of outer hearth air inlet holes are evenly distributed in the lower face of the outer hearth along the circumference; the appearance of the inner chamber is in a basin shape with an inner chamber hole in the center, the inner chamber is arranged in the outer chamber, the periphery of the inner chamber is placed on the outer chamber boss, the inner chamber hole is close to the burner and is flanged upwards, and a gap between the inner chamber hole and the burner is used as an outer air supplement port for secondary air; and the pot rack consists of a pot rack ring and a plurality of pot rack legs and is arranged on the upper edge of the outer chamber. Through multi-aspect improvement, the thermal insulation performance and heat recovery are improved, the thermal efficiency is higher than that of various existing gas stoves, and the gas stove is easy to detach and wash.

The utility model relates to a gas stove. The gas stove comprises a burner assembly, a burner part, a valve body assembly, a lifting part and a controller assembly; the burner component is arranged above the furnace end component, the lifting component is arranged in the center area of the burner component, the valve body component is connected with the furnace end component, and the valve body component and the lifting component are both connected with the controller component; and the valve body assembly provides gas with preset flow for the furnace end assembly according to the real-time state of the lifting component, so that the burner component generates flames, and the real-time state comprises a compressed state and an extended state. The lifting part is arranged in the center area of the combustion part, the placement state of the cookware above the furnace end assembly can be automatically monitored through a mechanical device, and the flame state can be automatically adjusted along with the placement state of the cookware.

The invention discloses a valve and a gas stove. The valve comprises a shell, a first outlet and a second outlet are formed in the front side of the shell, an inlet is formed in the rear side of the shell, a first channel and a second channel are formed in the shell, the rear ends of the first channel and the second channel communicate with the inlet, the front end of the first channel communicates with the first outlet, and the rear end of the second channel communicates with the second outlet. The front end of the second channel is communicated with the second outlet; the driving structure comprises a driving part and a transmission structure in transmission connection with the driving part, the transmission structure comprises a transmission shaft and a first cam and a second cam which are arranged on the transmission shaft, and the driving part can drive the first cam and the second cam to rotate in the radial direction of the transmission shaft through the transmission shaft; the first cam and the second cam are distributed towards different phases in the radial direction of the transmission shaft, and an avoiding area, a first cam exclusive area, an overlapping area and a second cam exclusive area which are sequentially distributed in the radial direction of the transmission shaft are formed between the first cam and the second cam in the axial direction of the transmission shaft.

The utility model discloses a premixing type furnace end burner and a gas stove, the premixing type furnace end burner comprises a burner main body, the burner main body is provided with an air inlet pipe, the air inlet pipe is provided with an air inlet channel, the air inlet pipe is provided with a first pipe part and a second pipe part, the first pipe part is provided with a first channel used for inputting air or oxygen, and the second pipe part is provided with a second channel used for inputting air or oxygen. The first pipe part is provided with a first channel used for inputting fuel, the second pipe part is provided with a second channel used for inputting fuel, the first channel and the second channel are both communicated with the air inlet channel, one of the first pipe part and the second pipe part is arranged at the end of the air inlet pipe, and the other is correspondingly arranged on the side of the air inlet pipe. By laterally arranging the first pipe part or the second pipe part, gas output by the first channel and gas output by the second channel can be intersected and mixed in the gas inlet channel, a good premixing effect is achieved, premixed gas can be output for combustion after being fully mixed, and it is guaranteed that the combustor can obtain good heating performance.

The utility model discloses a double-premixing burner. The double-premixing burner comprises a furnace end assembly and a first-stage premixing assembly connected to the furnace end assembly. The furnace end assembly comprises an injection pipe, and the injection pipe is provided with a second-stage premixing cavity and a natural injection hole communicating with the second-stage premixing cavity. The first-stage premixing assembly comprises an air blower and a first-stage premixer connected to the air blower, and an outlet of the first-stage premixer communicates with the second-stage premixing cavity. According to the double-premixing burner and the gas stove thereof, the natural air injection structure and the air blowing mechanism are combined, and meanwhile, the adjusting assembly is arranged at the inlet end of the natural air injection structure and used for adjusting the natural air inflow according to fluctuation of the air blowing mechanism, so that the fluctuation influence of the air blowing mechanism is reduced, and the combustion efficiency is improved. And meanwhile, the defect that the air inflow is insufficient due to the fact that only a natural air injection structure is adopted is overcome.

The utility model provides a gas nozzle and a gas stove, and relates to the technical field of stoves. The gas nozzle comprises a nozzle body, a nozzle inlet and a nozzle outlet are formed in the two ends of the nozzle body respectively, and an injection cavity is formed in the nozzle body. The gas nozzle further comprises a zero-time injection hole, the zero-time injection hole penetrates through the nozzle body, and the two ends of the zero-time injection hole communicate with the injection cavity and the outside correspondingly. The included angle between the zero-time injection hole and the extending direction of the nozzle body is not larger than 90 degrees, the situation that the zero-time injection direction is perpendicular to the primary injection direction is avoided, then the situation that an air curtain hinders primary injection is avoided, meanwhile, the rotation inclination angle is set for the zero-time injection hole in the radial direction of the nozzle body, and therefore the zero-time injection hole better conforms to the air flowing direction, and the injection efficiency is improved. The loss of momentum and flow is reduced, zero-time injection and primary injection are matched to form a synergistic effect and promote each other, and the injection capacity is improved.

The invention provides an intelligent gas control method and system, and the method comprises the steps: judging whether there is no person beside a stove or not based on an identification sensor when the stove is disposed on a cooking bench; the method comprises the following steps: acquiring stove state information, determining a cooking type according to the stove state information, generating a safety early warning time length based on the cooking type, acquiring gas concentration within the safety early warning time length, and judging whether gas supply needs to be immediately and automatically cut off according to the gas concentration and the stove state information; if the fuel gas supply does not need to be cut off immediately and automatically, whether the fuel gas supply is cut off manually or not is recognized within the safety early warning duration, and if the fuel gas supply is not cut off manually, the fuel gas supply is cut off automatically after the safety early warning duration is reached. Through an intelligent and automatic gas control strategy, the safety problem caused by forgetting to turn off the gas stove during cooking is solved.

The invention relates to the technical field of gas stoves, and particularly provides a control method of a gas stove and the gas stove.The control method comprises the steps that in response to the fact that the gas stove is in a dry burning state, whether the gas stove is in a firepower adjusting state or not is determined based on firepower adjusting information of the gas stove; responding to the firepower adjusting state of the gas stove, and adjusting a dry burning judgment strategy of the gas stove; and controlling the gas stove to stop working in response to the situation that the gas stove is not in the firepower adjusting state. According to the control method provided by the invention, the judgment precision of the dry burning state can be improved.

The present invention provides a burner and a gas stove, relating to the technical field of gas stoves. The burner provided by the present invention has a secondary air passage and includes: a burner head, a gas distributor, and a fire cover assembly, the fire cover assembly including an inner fire cover and an outer fire cover; one end of the gas distributor is connected to the burner head, and the other end is connected to the inner fire cover and the outer fire cover, the inner fire cover being located inside the outer fire cover; the inner fire cover is provided with an inner fire cover fire hole and an inner fire cover oxygen supply hole, the inner fire cover oxygen supply hole being arranged adjacent to the inner fire cover fire hole, and the outer fire cover is provided with an outer fire cover fire hole and an outer fire cover oxygen supply hole, the outer fire cover oxygen supply hole being arranged adjacent to the outer fire cover fire hole, and both the inner fire cover oxygen supply hole and the outer fire cover oxygen supply hole are connected to the secondary air passage. The burner and gas stove provided by the present invention solve the problem of being unable to supply secondary air to the burner in a direction.

The utility model relates to the technical field of gas stoves, and discloses a gas stove burner which comprises an upper component, a lower component is detachably mounted below the upper component, and the lower component is limited through a limiting component; the upper assembly comprises a furnace end body, a base is fixedly installed below the furnace end body, and a connecting cylinder is fixedly installed on the base. A pull ring is pulled backwards, at the moment, the pull ring drives a connecting disc to move backwards, a connecting steel rope pulls a square end plate outwards, two limiting clamping plates are far away from each other, a reset spring shrinks and becomes short, the two limiting clamping plates move out of the interior of an inserting groove, and therefore a connecting protrusion is not limited any more; therefore, the lower component can be simply and conveniently detached from the upper component.

The utility model discloses a pot rack for a stove and the gas stove, and belongs to the technical field of kitchen appliances. The pot rack for the kitchen range comprises an annular surrounding plate and a supporting piece, the annular surrounding plate is arranged on the periphery of a combustor in a sleeving mode, a concave arc face is arranged on the annular surrounding plate, the concave arc face faces the combustor, and the concave arc face extends in the circumferential direction of the annular surrounding plate; the supporting piece is used for supporting cookware and arranged on the annular surrounding plate. High-temperature flue gas generated by combustion collides with the concave cambered surface when flowing to the concave cambered surface to form a rollback vortex, so that the retention of the high-temperature flue gas at the bottom of the pot is facilitated, the heat exchange time of the high-temperature flue gas is prolonged, the heat exchange intensity of the high-temperature flue gas and the bottom of the pot is enhanced, and the heat energy utilization rate is improved, thereby improving the overall combustion heat efficiency; and on the other hand, the flowing direction of the high-temperature flue gas can be changed through the concave cambered surface, recombustion of part of the high-temperature flue gas can be achieved, generation of combustion waste gas such as CO is reduced, secondary air can be preheated through the high-temperature flue gas, and the combustion heat efficiency is further improved.

The utility model discloses a gas stove and an integrated electric appliance, the gas stove comprises a combustor and an energy uniformizing disc, an energy gathering disc surrounds the combustor so as to define a combustion cavity with the combustor, a first air flow channel is arranged between the energy gathering disc and the combustor, and the first air flow channel is communicated with the combustion cavity and the external space. According to the technical scheme, the first air flow channel is formed between the energy gathering disc and the combustor and communicates with the combustion cavity and the external space, secondary air can enter the combustion cavity from the external space along the first air flow channel, and it is avoided that flowing of the secondary air is hindered when the energy gathering disc is arranged; in this way, supply of secondary air is optimized, combustion of fuel gas sprayed out of the combustor is more sufficient, and the combustion efficiency of the gas stove can be improved.

The invention discloses an infrared temperature measurement module with a smoke-stove linkage control function and a method, smoke-stove linkage control logic is integrated in the infrared temperature measurement module, the infrared temperature measurement module is used for accurately monitoring the temperature change above a stove in real time, and the set smoke-stove linkage control function logic is combined, so that the smoke-stove linkage control function is realized. The range hood is accurately controlled according to the actual lampblack generation condition, the use experience of a kitchen is improved, meanwhile, energy consumption is reduced, and the current concept is met. The infrared temperature measurement module and method with the range hood and stove linkage control function are suitable for various stoves including induction cookers, electromagnetic ranges and gas stoves, the application range of the range hood and stove linkage technology is widened, the dependence of the range hood and stove linkage function on products of specific manufacturers is broken through, and the range hood and stove linkage control function is achieved. And the universality and the compatibility of the linkage function of the range hood and the stove are improved.

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.

The utility model relates to the technical field of combustors, in particular to a combustor and a gas stove, the combustor comprises a furnace end assembly, a fire cover assembly, an air duct shell and a blast piece, and the furnace end assembly comprises an injection pipe; the fire cover assembly is mounted at the top of the furnace end assembly; the air duct shell is arranged on the outer side of the furnace end assembly, an air preheating cavity is defined between the air duct shell and the furnace end assembly, so that the furnace end assembly preheats air entering the air preheating cavity, and the air preheated by the furnace end assembly enters the injection pipe from an air inlet of the injection pipe; the air blowing piece communicates with an inlet of the air preheating cavity and is used for blowing air into the air preheating cavity. According to the combustor provided by the embodiment of the utility model, the preheated primary air can be provided for the combustor, and the preheated primary air and the fuel gas enter the injection pipe together, so that the energy of the air entering the combustor can be improved, and the energy efficiency of the gas stove is further improved.

The invention discloses a household gas cooker pipe joint welding device, and relates to the technical field of laser welding equipment. The laser welding device comprises a base, a support is mounted at the top of the base, and a laser welding head is mounted at the top of the support; a rotating assembly is arranged at the top of the base and comprises a rotating column movably connected into the base and a first gear installed on the surface of the rotating column. According to the rotating assembly, a gear transmission structure is adopted to drive the supporting barrel and the machining table to rotate, multi-angle adjustment is achieved in cooperation with a driving motor and a speed reducer, a laser welding head can conduct surrounding welding on a pipe joint, and the problem of heat affected zone concentration of traditional fixed-angle welding is solved; the clamping assembly pushes a moving column to move upwards through mechanical linkage of a guide ring and a second pulley, three sets of clamping plates are pushed to move synchronously and horizontally, the guide ring and a spring reset structure which are obliquely designed are utilized, rapid centering clamping of a connector workpiece is achieved, and the problem of center deviation caused by stroke difference of an electric push rod is solved.

The utility model relates to the technical field of household appliances, and discloses an anti-dry-burning sensor mounting structure and a gas stove, the anti-dry-burning sensor mounting structure comprises a furnace end and an anti-dry-burning sensor assembly, the furnace end is provided with a central channel; the dry-burning-resistant sensor assembly comprises a fixing frame and a temperature sensor. The center of the fixing frame is provided with a vertically-through through hole, and the temperature sensor is coaxially fixed in the through hole. The peripheral wall of the fixing frame is provided with at least one groove part extending in the axial direction of the fixing frame, the fixing frame is coaxially embedded, limited and fixed in the center channel, and the groove part and the side wall of the center channel jointly form a gas channel. According to the anti-dry burning sensor mounting structure, by means of the coaxial embedding mode, the coaxiality between the sensor and the burner can be enhanced, it is ensured that the sensor can be mounted perpendicular to the fire cover, meanwhile, the structure can be simplified, and the machining and mounting cost can be reduced.