CN2502142Y

CN2502142Y - Gas range with re-ignition function

Info

Publication number: CN2502142Y
Application number: CN 01253095
Authority: CN
Inventors: 陈振农
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-15
Filing date: 2001-08-15
Publication date: 2002-07-24
Anticipated expiration: 2011-08-15

Abstract

The utility model discloses a gas range with re-ignition function, with the structural key points that the firing circuit of the gas range consists of a switch 1 which is coupled with a cooking utensils switch, a normally closed switch of a reed relay which is controlled by a thermocouple, a power supply, and a pulse lighter, which are conned in serial; a thermocouple solenoid valve used in flameout protection is arranged at the main burning fire-gas path of the gas range, and two main burning fire air outlets which are same as the air inlets and arranged at another ring surface completely staggering with the air inlets are arranged at the valve core of the cooking utensils switch valve of the gas range; and the valve is also provided with an eternal fire air outlet, the fire strike point of the pulse lighter is arranged at the eternal fire head. The utility model is capable of automatically igniting only need open the cooking utensils switch, and if having an accidental flameout, the gas range is capable of automatically protecting to close the main burning ire-gas path, and automatically reigniting, no need open the cooking utensils switch again.

Description

A kind of gas-cooker that has again ignition function

Invention field

The utility model belongs to a kind of household gas utensils, relates in particular to, a kind of gas-cooker that has again ignition function.

Prior art

Must press switch right and left in 5 second when using the gas-cooker with extinguish protection function all to be apprised of unlatching usually can loose one's grip, otherwise may cause igniting unsuccessful, can only heavily come.The kitchen range that do not have blowout protection, igniting gets nowhere during unlatching, also must open again behind the valve of pass.The structure of this gas-cooker as shown in Figure 1, a switch spool 11 is set in the valve body 8 of gas circuit, the switch-side of spool 11 is provided with a rotation by metallic gasket 10, little fiery gas outlet 1 and big fire gas outlet 2 are arranged on the spool 11, also has an air inlet 7 on the spool 11, central authorities in the close position of the switch of spool also are provided with an igniting valve rod 6, only when release knob is pressed in unlatching, combustion gas just can be emanated by igniting and mouthfuls 3 be mixed with air, after unclamping hand, under the effect of spring 12, igniting valve rod 6 resets, and closes the igniting gas circuit.Concrete open method is, when pressing and rotating counterclockwise, make air inlet 7 and gas outlet 2 be in aeration status, press and promote igniting valve rod 6 simultaneously, spring 12 compressions, the gas circuit of will lighting a fire is opened, by the igniting air-flow from igniting mouthfuls 3 ventilations of emanating,, lighted when running into pilot spark with after air mixes mutually from mouthful 3 combustion gas of coming out of emanating, the tongues of fire are lighted the large and small fire on the burner thus again, can loose one's grip this moment, in case the sparking spark runs into the unaccommodated gas of being lighted when occurring, open again after can only closing valve, up to successfully igniting.If pulse firing, just need press and allow impulse circuit work always up to lighting a fire successfully.

Summary of the invention

A goal of the invention of the present utility model is, only needs to open Range switch and just can finish igniting automatically, and as accident extinguishing, not only can close the master and fire the internal heat road, can also light a fire automatically, once more starting switch again.

The utility model is to realize like this; a kind of gas-cooker that has again ignition function; the firing circuit of described gas-cooker forms by connecting with reed relay normally closed switch K2, power supply and the pulse igniter of the K switch 1 of Range switch interlock, the control of first thermocouple; fire the magnetic valve that second thermocouple control that is used for blowout protection is set on the internal heat road the gas-cooker master, the sparking point of described pulse igniter is arranged on the height of anger kept burning day and night.

Description of drawings

Below in conjunction with accompanying drawing the part utility model is further specified, the person skilled in art can be to structure of the present utility model, the clearer understanding of feature and advantage according to following narration.

Fig. 1 is existing switch valve cross-sectional view;

Fig. 2 is a switch valve cross-sectional view of the present utility model;

Fig. 3 is that the Range switch valve rotates the front view by metallic gasket;

Fig. 4 is the firing circuit schematic diagram that has again the gas-cooker of ignition function;

Fig. 5 is the principle schematic of the reed relay normally closed switch K2 interlock of thermocouple magnetic valve and thermocouple control.

The specific embodiment

Fig. 2 is the schematic diagram of the switch valve of the utility model employing.Compare with the prior art structure of Fig. 1, removed the special-purpose air valve of igniting, comprise that igniting valve rod 6, igniting emanate mouthfuls 3, spring 12.Replace with the valve core structure 21 of an integral body; the utility model is arranged on duration and degree of heating kept burning day and night (being little duration and degree of heating) with pulse firing and locates; the ever-burning flame duration and degree of heating is given vent to anger as the igniting source of the gas; for safety; on main combustion fire (big fire) gas circuit, a magnetic valve 23 that is subjected to the control of second thermocouple is set; when the going fire accident is extinguished, play the protective effect of closing.Because this structure has ignition function again, still have the source of the gas on the ever-burning flame gas circuit to use behind the accident extinguishing for lighting a fire again.The magnetic valve 23 of second thermocouple control among Fig. 2 can directly adopt the thermocouple magnetic valve in the existing kitchen range; it is different that the position just is set; be arranged at before the switch valve large and small fire branch crossing in the existing kitchen range; and the utility model is arranged on main combustion fire (being big fire) gas circuit; like this; flame-out in case meet accident, in the main combustion of protection internal heat road, still have source of the gas to supply with the usefulness of igniting again on the ever-burning flame gas circuit.

As shown in Figure 3, rotation at the Range switch valve is offered a groove 33 in the appropriate location on metallic gasket 35 excircles, thereunder the appropriate location is provided with a K switch 1 that controlled by metallic gasket, it is the K switch 1 among Fig. 4, K switch 1 comprises fixed touching plate 31 and movable contact spring 32, and when switch valve was in closed condition, the insulation projection 34 on the movable contact spring 32 slided in the groove 33 of metallic gasket 35, this moment, K switch 1 was in off-state, state as shown in Figure 3.

When counterclockwise unlatching Range switch valve, when driving valve 180 and spending, the button 36 that ends of pad is blocked and can not reverse again by the projection on the valve seat 310 37, opening gas circuit while spool 38 rotation drive metallic gaskets 35 rotates equally, projection 34 is forced to leave the groove 33 of metallic gasket 35, driving movable contact spring 32 presses down, this moment, two contacts of two contacts contacted, K switch 1 closure after K switch 1 closure, can be recognized by the circuit as Fig. 4, impulse circuit is started working, directly light ever-burning flame, after several seconds, the magnetic valve 23 of second thermocouple control among Fig. 2 will move and open and lead combustion internal heat road, fuel gas buring, simultaneously, first thermocouple disconnects reed relay normally closed switch K2, and impulse circuit quits work.

When combustion gas fire accident is extinguished; the magnetic valve 23 of second thermocouple control recovers closed condition; close main combustion gas (blowout protection); the relay of first thermocouple control also recovers K switch 2 and is normally off; be K switch 2 closures; impulse circuit is reworked, and lights ever-burning flame once more, realizes ignition function again.

The reed relay normally closed switch K2 of the thermocouple control among Fig. 4 adopts normally closed reed relay, controlled by a thermocouple, and the inductive head of thermocouple is when hot, and K switch 2 disconnects, during cold conditions, and K switch 2 closures.

As from the foregoing,, just can realize successfully lighting a fire, not need repeatable operation or push gas stove switch several seconds as long as described gas-cooker is opened Range switch.

Simple in structure in order to make, the reed relay normally closed switch K2 of thermocouple magnetic valve 23 and thermocouple control can be merged interlock, structural principle is shown in Fig. 5 (a), the control iron core of thermocouple induction core 51 is fixed on the

control lever

52,2 liang of contacts of K switch just are arranged on the below of control lever 52, putting control lever 52 by suction controls simultaneously and is arranged at main combustion fire emanate outer spool 57 in hole 54 and the movable contact spring 58 of normally closed switch K2, design principle is, after the kitchen range ever-burning flame is lighted, the thermocouple induction head is heated, produce magnetic force when thermocouple produces induced-current by core 51 and hold iron core, drive on the control lever 52 and move, the mobile one side of control lever 52 drives spool 57 rotations makes the air inlet of passage 55 aim at fully with the mouth 54 of emanating on the main combustion internal heat road, and state is as shown in the figure opened master's combustion fire; On the other hand, the movable contact spring 58 of normally closed switch K2 is with moving on the control lever 52 and upspring, the contact of fixed touching plate 59 is left and cut-off switch K2 in the contact of movable contact spring 58, as Fig. 5 (b) state, when stove extinguishes, thermocouple core 51 loses magnetic force because of non-inductive electric current, decontrol control lever 52, under the effect of torque spring 53, control lever 52 moves down, drive on the one hand spool 57 and rotate the air inlet that makes passage 55 and mouthfuls 54 stagger fully and close main combustion gas with emanating, on the other hand, the movable contact spring 58 that control lever 52 moves down compressing K switch 2 makes 2 liang of contacts contacts of K switch, K switch 2 closures then, state shown in Fig. 5 (c) is realized the two controls of a valve, the mobile interaction that is controlled by hold-down screw 56 and stopper slot of spool 57.In this structure, it is little that spool opens and closes the gas circuit displacement, and speed is fast, more meets safety requirements.

More than all embodiment only for the explanation the utility model usefulness, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or variation, so all technical schemes that are equal to also should belong to category of the present utility model and should be limited by each claim.

Claims

1, a kind of gas-cooker that has again ignition function; the firing circuit of described gas-cooker forms by connecting with reed relay normally closed switch K2, power supply and the pulse igniter of the K switch 1 of Range switch interlock, the control of first thermocouple; fire the magnetic valve that second thermocouple control that is used for blowout protection is set on the internal heat road the gas-cooker master, the sparking point of described pulse igniter is arranged on the height of anger kept burning day and night.

2, the gas-cooker that has again ignition function according to claim 1 is characterized in that, described K switch 1 and Range switch interlock, and when Range switch is opened, K switch 1 closure, when Range switch was closed, K switch 1 disconnected.

3, the gas-cooker that has again ignition function according to claim 1 is characterized in that, described K switch 2 is for being subjected to the normally closed switch of thermocouple control, and when thermocouple is in when hot, K switch 2 is opened, and disconnects described firing circuit.

4, the gas-cooker that has again ignition function according to claim 1 is characterized in that, the described thermocouple magnetic valve that is used for blowout protection is arranged on main combustion internal heat road.

5, the gas-cooker that has again ignition function according to claim 1 is characterized in that, described K switch 2 can realize interlock with the thermocouple magnetic valve that is used for blowout protection.