A kind of gas stove
Technical field
The present invention relates to a kind of gas stove, relate in particular to a kind of better safety performance gas stove.
Background technology
Gas stove comprises gas-cooker and water heater stove etc.Existing general gas cooking stove comprises power circuit, ignition system and Gas Pipe.Have the ignition knob of general gas cooking stove now when the user presses and outwards winding, igniter produces the high voltage pulse spark and lights a fire.The power circuit of existing general gas cooking stove is supplied power by spare direct current battery; But the voltage that spare direct current battery produced only can produce of short duration high voltage pulse spark by the support level firearm; During this period of time; Igniter is if fail igniting, and then the user need light a fire again, and this general gas cooking stove exists very big inconvenience in the use.
More advanced, a kind of gas stove of directly being supplied power by civil power has appearred on the market.Use this gas stove, when the user presses and the ignition knob of the gas stove of outwarding winding, igniter produces the high voltage pulse spark that continues and lights a fire, until lighting a fire successfully.Therefore, use this gas stove very convenient, only otherwise have a power failure, just can guarantee point pyrogene merit.
Yet just because of easy to use, the user often will compare general idea in use, especially when being busy with housework, press sometimes and the ignition knob of outwarding winding after, do not wait flame to light, will leave.But as mentioned above, this gas stove is under situation about not having a power failure, could guarantee point pyrogene merit.Therefore, when the user pressed and outward winding ignition knob, if just meet power failure, so, igniter just can't produce the high voltage pulse spark, the success of also just can not lighting a fire.And this moment, ignition knob was in the state of outwarding winding always, and Gas Pipe discharges combustion gas continuously, is easy to take place accidents such as combustion gas leakage, especially when family stay-at-home be old man and child the time, be easy to take place to poison and event of fire.Therefore, this gas stove of directly being supplied power by civil power exists hidden danger on security performance.
Summary of the invention
The present invention is directed to deficiency of the prior art, provide a kind of security good gas stove.
In order to solve the problems of the technologies described above, the present invention is able to solve through following technical proposals:
A kind of gas stove comprises power circuit, ignition system and Gas Pipe, also comprises first magnetic valve, and said first magnetic valve is a normally closed solenoid valve, is installed on the Gas Pipe, links to each other with power circuit.When power circuit to first solenoid valve, first magnetic valve is opened, and opens Gas Pipe.Therefore, when running into the situation of power failure, power circuit can't be to first solenoid valve, and first magnetic valve is normally closed, and Gas Pipe is in closed condition all the time.The ignition knob even the user presses and outwards winding do not have combustion gas to be released yet, and stopped in the prior art that combustion gas is revealed and revealed the accident that causes by combustion gas.
In the technique scheme, said gas stove also comprises thermocouple that is connected to kitchen range and second magnetic valve that links to each other with thermocouple, and said second magnetic valve is installed on the Gas Pipe, is normally open solenoid valve.After reasons such as the flame that is burning on the kitchen range waters because of wind or water were extinguished, thermocouple detected temperature decrease, sends a control electric current to second magnetic valve, and second closed electromagnetic valve has further guaranteed the security performance of gas stove.
In the technique scheme; Said gas stove also comprises the thermocouple that is connected to kitchen range, and thermocouple is connected to first magnetic valve, and said first magnetic valve comprises first valve body and rotary first spool; Gas Pipe comprises first air inlet, first gas outlet; First air inlet, first gas outlet are passed first valve body respectively, link to each other with first spool, offer first through hole on said first spool and the corresponding cross section of Gas Pipe; The relative position relation of first through hole and first air inlet, first gas outlet is, during original state: be not communicated with; During normal operating conditions: angle of first spool rotation, first through hole is connected first air inlet and first gas outlet; During the blowout protection state: first spool rotates an angle once more, and first through hole and first air inlet, first gas outlet become not connected state once more; During outage: the first spool reverse rotation is to initial position, and first magnetic valve resets.
In the technique scheme; Said first through hole forms second air inlet, the 3rd air inlet, second gas outlet, the 3rd gas outlet; Said second air inlet, the 3rd air inlet, second gas outlet, the 3rd gas outlet are interconnected, and the position relation of said first through hole and Gas Pipe is, along with the rotation of spool; When second gas outlet and the connection of first gas outlet, second air inlet, the 3rd air inlet all do not link to each other with first air inlet; When the 3rd gas outlet and the connection of first gas outlet, second air inlet and first air inlet are connected; When the 3rd air inlet and the connection of first air inlet, second gas outlet, the 3rd gas outlet all do not link to each other with first gas outlet.
In the technique scheme; Said gas stove also comprises the thermocouple that is connected to kitchen range, and thermocouple is connected to first magnetic valve, and said first magnetic valve comprises second valve body and parallel-moving type second spool; Gas Pipe comprises the 4th air inlet, the 4th gas outlet; The 4th air inlet, the 4th gas outlet are passed second valve body respectively, link to each other with second spool, offer second through hole on said second spool; The relative position relation of second through hole and the 4th air inlet, the 4th gas outlet is, during original state: be not communicated with; During normal operating conditions: the second spool translation, one segment distance, second through hole is connected the 4th air inlet and the 4th gas outlet; During the blowout protection state: second spool is translation one segment distance once more, and second through hole and the 4th air inlet, the 4th gas outlet become not connected state once more; During outage, second spool oppositely moves to initial position, and first magnetic valve resets.
In the technique scheme; Said second through hole forms the 5th air inlet, the 5th gas outlet; The 5th air inlet, the 5th gas outlet are connected away from an end of Gas Pipe, and the width of the 5th air inlet, the 5th gas outlet is respectively greater than the width of the 4th air inlet, the 4th gas outlet, and the position of said second through hole and Gas Pipe relation is: during initial position; The 5th gas outlet and the 4th gas outlet are connected, and the 5th air inlet does not link to each other with the 4th air inlet; During normal operating conditions, the second spool translation, one segment distance, the 5th air inlet links to each other with the 4th air inlet, and the 5th gas outlet and the 4th gas outlet are connected; During the blowout protection state, second spool is translation one segment distance once more, and the 5th air inlet and the 4th air inlet are connected, and the 5th gas outlet does not link to each other with the 4th gas outlet; When resetting: second spool oppositely moves to initial position, and first magnetic valve resets.
Beneficial effect: the present invention compared with prior art has following beneficial effect:
(1) the present invention is equipped with normally closed first magnetic valve by power supply control on Gas Pipe, and when power circuit during to first solenoid valve, first magnetic valve is opened, and opens Gas Pipe.Therefore, when running into the situation of power failure, power circuit can't be to first solenoid valve, and first magnetic valve is normally closed, and Gas Pipe is in closed condition all the time.The ignition knob even the user presses and outwards winding do not have combustion gas to be released yet, and stopped in the prior art that combustion gas is revealed and revealed the accident that causes by combustion gas.Ensured the security performance of gas stove.
(2) the present invention also is equipped with flame-out protection device, and when burned flame extinguishes, thermocouple detects temperature decrease, and control first magnetic valve or the second closed electromagnetic valve Gas Pipe make it stop air feed rapidly, have further ensured the safety of products performance.
Description of drawings
Fig. 1 is the theory diagram of the embodiment of the invention one.
Fig. 2 is the structural representation of first magnetic valve of the embodiment of the invention two.
Fig. 3 is that the A-A of Fig. 2 under the access failure power supply status is to cutaway view.
Fig. 4 is that Fig. 2 A-A in normal operation is to cutaway view.
Fig. 5 is that the A-A of Fig. 2 under the blowout protection state is to cutaway view.
Fig. 6 is the structural representation of first magnetic valve of the embodiment of the invention three.
Fig. 7 is the cutaway view of Fig. 6 under the access failure power supply status.
Fig. 8 is Fig. 6 cutaway view in normal operation.
Fig. 9 is the cutaway view of Fig. 6 under the blowout protection state.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:
Referring to accompanying drawing 1, a kind of gas stove comprises power circuit, ignition system and Gas Pipe, also comprises first magnetic valve, and said first magnetic valve is a normally closed solenoid valve, is installed on the Gas Pipe, links to each other with power circuit.When power circuit to first solenoid valve, first magnetic valve is opened, and opens Gas Pipe.Therefore, when running into the situation of power failure, power circuit can't be to first solenoid valve, and first magnetic valve is normally closed, and Gas Pipe is in closed condition all the time.The ignition knob even the user presses and outwards winding do not have combustion gas to be released yet, and stopped in the prior art that combustion gas is revealed and revealed the accident that causes by combustion gas.
As a preferred embodiment of the present invention; Refer again to Fig. 1; Fig. 1 is the theory diagram of embodiment one: said gas stove also comprises thermocouple that is connected to kitchen range and second magnetic valve that links to each other with thermocouple, and said second magnetic valve is installed on the Gas Pipe, is normally open solenoid valve.After reasons such as the flame that is burning on the kitchen range waters because of wind or water were extinguished, thermocouple detected temperature decrease, sends a control electric current to second magnetic valve, and second closed electromagnetic valve has further guaranteed the security performance of gas stove.
During practical implementation, also can first magnetic valve be improved, make the function of its compatible second magnetic valve, make embodiment two or the structure of the embodiment three shown in Fig. 6~9 shown in Fig. 2~5.At this moment, electroheat pair also is connected to first magnetic valve, and first magnetic valve is controlled by power circuit and thermocouple jointly.
Embodiment two; Refer again to accompanying drawing 2~5: said first magnetic valve comprises first valve body 1 and rotary first spool 2; Gas Pipe comprises first air inlet 30, first gas outlet, 31, the first air inlets 30, first gas outlet 31 and passes first valve body 1 respectively, links to each other with first spool 2.Offer first through hole on said first spool 2 and the corresponding cross section of Gas Pipe, the original state of first through hole and first air inlet 30, first gas outlet 31 is connected state not.When power circuit begins power supply, angle of first spool 2 rotation, first through hole is connected first air inlet 30 and first gas outlet 31, and Gas Pipe begins air feed; When burned flame extinguishes; Thermocouple detects temperature decrease, sends a control electric current to first magnetic valve, and first spool 2 rotates an angle once more; First through hole and first air inlet 30, first gas outlet 31 become not connected state once more, and Gas Pipe stops air feed; During outage, 2 reverse rotations of first spool are to initial position, and first magnetic valve resets.
As preferably, said first through hole forms second air inlet 21, the 3rd air inlet 22, second gas outlet 23, the 3rd gas outlet 24, and said second air inlet 21, the 3rd air inlet 22, second gas outlet 23, the 3rd gas outlet 24 are interconnected.The position of said first through hole and Gas Pipe relation is, along with the rotation of first spool 2, when second gas outlet 23 during with 31 connections of first gas outlet, second air inlet 21, the 3rd air inlet 22 all do not link to each other with first air inlet 30; When the 3rd gas outlet 24 and 31 connections of first gas outlet, second air inlet 21 and first air inlet 30 are connected; When the 3rd air inlet 22 and first air inlet 30 were connected, second gas outlet 23, the 3rd gas outlet 24 did not all link to each other with first gas outlet 31.
During original state, the power supply access failure, as shown in Figure 3 at this moment, second gas outlet 23 and first gas outlet 31 are connected, and second air inlet 21, the 3rd air inlet 22 all do not link to each other with first air inlet 30, and air inlet pipe is in closed condition.At this moment, the ignition knob even the user presses and outwards winding does not have combustion gas to be released yet, and has stopped in the prior art that combustion gas is revealed and has been revealed the accident that causes by combustion gas.
Normal operating conditions, referring to Fig. 4: behind the power connection, first magnetic valve receives a signal, angle of first spool, 2 rotations, at this moment, the 3rd gas outlet 24 is connected with first gas outlet 31, second air inlet 21 and 30 connections of first air inlet.Cause the 3rd gas outlet 24 and second air inlet 21 are interconnected, so first air inlet 30 and first gas outlet 31 are connected, Gas Pipe begins air feed.At this moment,, can successfully light a fire, make the gas stove operate as normal when user's ignition knob of pressing and outward winding.
The blowout protection state; Referring to Fig. 5: after reasons such as the flame that is burning on the kitchen range waters because of wind or water were extinguished, thermocouple detected temperature decrease, sends a control electric current to first magnetic valve; First spool 2 rotates an angle once more; At this moment, the 3rd air inlet 22 and first air inlet 30 are connected, and second gas outlet 23, the 3rd gas outlet 24 all do not link to each other with first gas outlet 31.That is, Gas Pipe is closed, no longer air feed.Further ensured the safety of products performance.
Reset: finish using, behind the powered-down, 2 reverse rotations of first spool are to initial position, and first magnetic valve resets, and becomes state shown in Figure 3 once more.
Embodiment three; Referring to accompanying drawing 6~9: said first magnetic valve comprises second valve body 4 and parallel-moving type second spool 5; Gas Pipe comprises the 4th air inlet 60, the 4th gas outlet 61, the four air inlets 60, the 4th gas outlet 61 and passes second valve body 4 respectively, links to each other with second spool 5.Offer second through hole on said second spool 5, the original state of second through hole and the 4th air inlet 60, the 4th gas outlet 61 is connected state not.When power circuit begin the power supply, second spool, 5 translations, one segment distance, second through hole is connected the 4th air inlet 60 and the 4th gas outlet 61, Gas Pipe begins air feed; When burned flame extinguishes; Thermocouple detects temperature decrease, sends a control electric current to first magnetic valve, and second spool 5 is translation one segment distance once more; Second through hole and the 4th air inlet 60, the 4th gas outlet 61 become not connected state once more, and Gas Pipe stops air feed; During outage, second spool 5 oppositely moves to initial position, and first magnetic valve resets.
As preferably, said second through hole forms the 5th air inlet 50, the 5th gas outlet 51, the five air inlets 50, the 5th gas outlet 51 and is connected away from an end of Gas Pipe.The width of the 5th air inlet 50, the 5th gas outlet 51 is respectively greater than the width of the 4th air inlet 60, the 4th gas outlet 61.
The position relation of said second through hole and Gas Pipe is:
During initial position, as shown in Figure 7, the 5th gas outlet 51 and the 4th gas outlet 61 are connected, and the 5th air inlet 50 does not link to each other with the 4th air inlet 60.Therefore, Gas Pipe is closed, not air feed.
During normal operating conditions, referring to Fig. 8, behind the power connection; First magnetic valve receives a signal; Second spool, 5 translations, one segment distance, the 5th air inlet 50 links to each other with the 4th air inlet 60, because the width of the 5th gas outlet 51 is greater than the 4th gas outlet 61; At this moment, the 5th gas outlet 51 is still connected with the 4th gas outlet 61.The Gas Pipe air feed.
The blowout protection state is referring to Fig. 9, when the flame that is burning on the kitchen range waters because of wind or water etc. after reason extinguishes; Thermocouple detects temperature decrease; Send a control electric current to first magnetic valve, second spool 5 is translation one segment distance once more, at this moment; The 5th air inlet 50 and the 4th air inlet 60 are still connected, but the 5th gas outlet 51 does not link to each other with the 4th gas outlet 61.That is, Gas Pipe is closed, no longer air feed.Further ensured the safety of products performance.
Reset: finish using, behind the powered-down, second spool 5 oppositely moves to initial position, and first magnetic valve resets, and becomes state shown in Figure 7 once more.