Gas stove construction works and parts : First, the principle of pulse ignition gas stove ( with thermocouples , no thermocouple ) to open the gas valve , press the knob , the knob lever moves down , pushing the valve body moves down along the thimble , thimble pushes the valve body curved bar swing to promote the solenoid valve opens ; Meanwhile , knobs metal rod with pulse ignition switch wire in contact with the surface of the shell through the knob lever the formation of ground loops , pulse starts the ignition ; because the top of the knob lever flat head key , set in the gas valve keyway , if the knob counter-clockwise ( clockwise rotation by the valve body positioning device limitations , can not move ) , the positioning of the knob stopper rod tip will follow the spin- ladder play table, off valve positioning limits , the gas valve will rotate together with the rotary knob , gas inlet valve spool holes aligned with conduction At this point the gas pipeline will pass through holes   gas valve solenoid valve  ejector tube valve valves   nozzle ( once mixed with air )  burner  throttle  fire cover ( mixed with secondary air ) , after a fire burning. ejector phase at the burner tube and the adjustment of air into the gas means ( known damper ) , by adjusting the size of the damper (changing air flow cross-section ) can be changed once the air mixing factor , affecting the flame combustion to prevent generation of yellow flame . Since the beginning of combustion, heat the thermocouple electromotive force is generated by the wire into the solenoid coil produces a magnetic field causes the solenoid valve energized , thus maintaining the valve open, release the hand can be adjusted so that the flame size . when an accident flameout , the thermocouple leads the voltage quickly becomes zero , solenoid valve coil de-energized , the spring action , quickly cut off the gas passage , to prevent gas spills . To turn off the gas stove , you can turn the knob clockwise to the "OFF " position can, at this time , gas valve and solenoid valves has cut off the gas path , combustion stops , gas does not spill ; knob lever positioning stopper groove swing into position , the knob can not be rotated . two , pulsed gas stove part structure : 1 , thermocouple : is a pair ( two ) welding of different materials together with the alloy wire , when heated at one end , the other end of the cooling, the alloy wire can be generated between the two electromotive force ( voltage ) of the alloy wire size determines the electromotive force is generated in the alloy wire material properties and the heating temperature. it consists of a metal wire , protective cover , and transmission line components in the flame heating the thermocouple electromotive force generated at both ends to the solenoid valve , the solenoid valve is energized to maintain pull, maintaining gas conduction ; when an accident flameout , the use of two thermocouples side of the force disappears , the solenoid valve energized release , blocking the gas passage , to prevent gas spills . 2 , the solenoid valve : It is a pure iron folded into a U-shaped or U-shaped punching soft magnetic ferrite core column ( armature ) of electromagnet generates a magnetic field it is energized , the spool can pull rod , the gas inlet valve open , loss of power after a spring force on its own can automatically reset , shut the gas holes, gas is not guaranteed will spill. ignition gas stove knob is pressed , the first by the valve body thimble top open solenoid valve, when the burning is normal, thermocouple electromotive force generated at both ends ( voltage ) , the solenoid valve is energized to maintain pull, ensure the release hand after gas conduction ; when an accident flameout , the thermocouple emf generated Flameless without solenoid valve released, the gas path seal to ensure the safety of use . 3 , the valve assembly: gas is mainly used for gas Road, air traffic control and gas regulation . valve body from the gas valve , ejector pipe, knob lever positioning device , transmission and switching between functions needed accessories. gas valve is used to regulate the gas flow , the control apparatus of the gas path , it is because the gas vent valve and the valve body is provided between the inlet angle , when the lever is not pressed to rotate the knob , the air vent valve is not aligned with the inlet , the gas pathway is still sealed ; If at this time the ignition is successful, turn the knob , gas conduction , gas will be ignited ; if the ignition is not successful, the knob does not rotate , you can prevent the gas leak ; gas valve on the diameter of the pores of different limiting the gas flow , controlling the size of the gas stove flame . positioning means is a positioning block and the valve body by a positioning groove formed , "off" state , the positioning block is set in the positioning groove , the knob can rotate , press and turn the knob when positioning block starting rotation , from the positioning limits to ensure that the release after the hand knob within a certain range can be freely rotated to adjust the fire size 4, ignition pulse : it is composed of electronic components consisting of a pulse -frequency oscillator by a high frequency voltage generated by the oscillator through the step up transformer into a high voltage of 15KV , for point discharge , the discharge spark ignited gas burner this igniter is high , continuous discharge . press under knobs, pulse ignition start ignition ; loosen the knob , pulse stops firing . three piezoelectric ceramic gas stove works narrate open the gas valve , press the knob , the knob lever pressing the gas valve within the valve tip thimble moves down promote gas fire tube inner spool valve to open. because the knob lever tip is flat key , set in the gas valve keyway , press the knob ( clockwise rotation by the valve body positioning device constraints, can not rotate ) , the top of the knob lever will follow the positioning stopper play ladder rotary table, from the positioning of the valve body limits ; rotates counterclockwise , the gas valve will rotate together with the rotary knob , fork on the plug to drive the gas swinging fork promote ignition moving inside the hammer , the hammer return spring is compressed when the knob is rotated to 90 �, the fork from the hammer , the spring force of the hammer quickly reset , hit piezoelectric ceramic cathode , at the other end ( anode ) produces instantaneous pressure (15KV), connected by wires to the ignition tube discharge ignition in the knob , the needle discharge sparking fire , while the gas inlet valve spool holes aligned with conduction , gas will pass two way forward external output, the gas pipeline all the way to the body through holes    pyrophoric gas pipe valve spool valve   jet ejector nozzle tube ( air mixing )  fire tube , fire burning, fire cover to the jet. another way lose trachea   air spool valve hole ejector pipe    throttle  burner nozzle ( once mixed with air )  sub firearms ( mixed with secondary air )  gas conduction, after a fire burning. ejector phase at the burner tube and the adjustment of air into the gas devices ( commonly known as the throttle ) , by adjusting the damper size ( change the air flow cross-section ) can change the primary air mixing coefficients , affecting flame condition and prevent yellow flame produces . shut off the gas stove , simply turn the knob to the "OFF " button , then shut the gas valve inlet gas combustion stops , gas does not spill ; knob lever positioning stopper groove swing into position , the knob can not be rotated . Fourth, piezoelectric ceramic gas stove 1 the principle and function components , piezoelectric ignition: mainly by a piezoelectric effect of the ceramic element , the mechanical energy is converted into electrical energy , instantaneous discharge , spark ignition gas which is a high-voltage ignition pin, high pressure rubber wire , piezoelectric ceramics , the hammer , the return spring , the outer housing and other components of piezoelectric ceramics are mainly cobalt titanate as raw ceramic material, the molding, sintering, the upper electrode , polarization treatment is made and a series of the cylindrical ceramic . this ceramic lattice arrangement of positive and negative non- centrosymmetric , and therefore under the action of an external force , the ceramic electric potential difference generated between both ends (voltage ) . which produces a voltage level and the pressure force and suffered the height is proportional to the electric ceramics , ceramic cross-section is inversely proportional to the igniter is two different geometries pressed ceramic anode connected with the high pressure rubber multi-strand copper wire leads, accompanied by two copper anode end , the use of polycarbonate plastic solid seal , easy piezoelectric ceramic multiple impacts when pressed and turn the knob , the knob on the lever to drive the gas valve swinging fork , push the igniter inside the hammer moves , the hammer return spring is compressed , when the knob is rotated to 90 �, the fork from the hammer , the spring force of the hammer blows piezoelectric ceramic cathode , at the other end ( anode ) to generate instantaneous pressure (15KV), the ignition discharge ignition for the ground 2 , valve assembly : mainly used for gas gas , throttle, firearm trigger electron gas control and gas flow regulation . was by the valve body , valve core , ejector tube ( including nozzle ) , the knob lever positioning means for the return spring , gas valve , the transmission device and switching between functions required accessories. gas valve for regulating the gas flow , controlling the gas pathway , it is because the gas vent valve and the inlet valve body Room with a certain angle , when you press the knob lever without rotation , the gas valve inlet holes are not aligned with the gas passage is still sealed ; If at this time the ignition is successful, turn the knob , gas conduction , gas will be lit ; if the ignition is not successful, the knob does not rotate , you can prevent the gas leak ; addition, to ensure fire tube when the ignition gas injection and ignition point after the fire tube gas gas line is shut off valve is provided in the gas a gas valve , press the knob , the valve stem by pushing the knob , loosen the knob on its own valve spring force reset , shut off the gas path . damper is used to adjust the air into the gas device ( ie, a change in the air mixing coefficient ) the positioning device is a positioning block and the valve body positioning groove composition, "off" state, the positioning block sets in the positioning groove, the knob can not rotate ; pressing and turning the knob, the positioning block from the spin , from the positioning limits to ensure that the after releasing the hand knob is rotatably within a certain range in order to adjust the fire size . 3 , the burner parts: mainly by the stove, fire cover , center cover ( decorative cover ) , whose role is to achieve the combustible gas . burner is achieved with the gas jet nozzle joints and once air mixing ; primary air damper is adjustable mixing coefficient means ; fire cover is to make the diversion of gas and the air mixing and achieve secondary gas burner ; center cover is to achieve a small fire burning. double burner stove series has a variety of styles, interoperability between different models are not common ; around stove burners between sizes, can not be universal .