CN2272110Y - Automatic ignition safety device for gas stove - Google Patents
Automatic ignition safety device for gas stove Download PDFInfo
- Publication number
- CN2272110Y CN2272110Y CN 95203184 CN95203184U CN2272110Y CN 2272110 Y CN2272110 Y CN 2272110Y CN 95203184 CN95203184 CN 95203184 CN 95203184 U CN95203184 U CN 95203184U CN 2272110 Y CN2272110 Y CN 2272110Y
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- igniting
- gas
- section
- burner
- resistance value
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Abstract
The utility model relates to an automatic ignition safety device for a gas stove, which comprises an electromagnetic valve, a press switch, a microswitch, an ignition induction needle, a control circuit and a power supply, wherein, the electromagnetic valve is arranged between a gas flow control valve and a gas conveying pipe; the press switch can be axially moved from an initial position to an end point position after pressed, and reversely returns to a middle position; when pressed again, the press switch returns to the initial position; when the press switch is at the middle position, the microswitch is switched on; when the press switch is at the initial position, the microswitch is switched off; the ignition induction needle is arranged near a gas stove head; the ignition induction needle is controlled by the control circuit to ignite, and the control circuit also detects resistance values between the ignition induction needle and the gas stove head; the power supply is used for supplying electric power for the utility model.
Description
The utility model is relevant with gas oven, and when particularly extinguishing about a kind of gas stove fire accident, the automatically igniting of can going ahead of the rest lights a fire not that Cheng Houzai cuts off gas supply automatically, puts fire safety devices automatically to prevent the gas oven that gas leaks outside.
The gas oven of tradition must have the people to look after on the side when fricassee for a long time, otherwise stove fire promptly causes gas to leak outside in case the soup juice that is put out or overflowed by wind waters when putting out, and not only food cooking does not become, and also may lead to the heavy casualties tragedy.In view of this, then have when gas oven cause of fire accident is extinguished, can cut off the gas oven of gas supply automatically and ask the city, it is that a thermocouple is established on ring fire flame next door in the gas burner, establish a magnetic valve at gas oven flow rate regulating valve end, utilize the thermocouple induction stove fire temperature to produce electric current, make the magnetic valve action be out (ON) state, gas keeps path, when the stove fire accident is extinguished, the non-inductive electric current of thermocouple, magnetic valve promptly are pass (OFF) state automatically, cut off gas supply.On take off thermojunction type gas oven safety device disappearance be: one, because thermocouple must continue heated for several can produce electric current second and make the magnet valve action, must continue to push the ignition switch several seconds when therefore lighting a fire, jet flames when utilizing igniting continues heating to thermocouple makes it produce electric current, its mode of operation is different with the traditional type gas oven, so user's paradoxical reaction gas oven is difficult for the some work.Though two, it can cut off gas supply automatically when the gas stove fire extinguishes, avoid unexpected and take place, cause also and boil the interruption of cooking a meal, be its a fly in the ointment.
The main purpose of the utility model is to provide a kind of gas oven to put fire safety devices automatically, when the stove fire accident was extinguished, its igniting automatically of can going ahead of the rest was after automatic igniting is unsuccessful, automatically cut off gas supply again, make that boiling cooks a meal unlikelyly is interrupted because of stove fire puts out when coming for the moment.
Another purpose of the utility model is to provide a kind of gas oven to put fire safety devices automatically, and its igniting action is very simple and easy.
For reaching above-mentioned purpose, automatically put fire safety devices according to a kind of gas oven that the utility model provided, include: a magnetic valve, be located between the gas flow control valve and gas inlet pipe of watt phase stove, be path (ON) or open circuit (OFF) in order to control gas inlet pipe road; One push switch, but pressurized is axially displaced along one from an initial position, earlier just arrive an endpoint location through a centre position, oppositely return and rest on this centre position again, when pressurized once more from this centre position involution to this initial position, when it arrives endpoint location, can back down magnetic valve and make the gas inlet pipe road be channel status; One microswitch, the control of the switch that is pressed is when push switch is path (ON) state during in the centre position, when push switch is (OFF) state that opens circuit during at initial position; One igniting inductive needle, contiguous gas burner in order to the igniting of gas burner, and can be used detecting gas burner and the resistance value of lighting a fire between inductive needle; One control circuit, be subjected to the control of this microswitch, can control of the igniting action of igniting inductive needle to burner, and the resistance value between detecting igniting inductive needle and burner, and the keying (ON of this magnetic valve of control, OFF), its inner tool one timing circuit, when this microswitch is channel status, this control circuit carries out automatic ignition procedure, timing circuit in it starts, and makes magnetic valve keep channel status in setting-up time, and the gas inlet pipe road is held open, and make the igniting inductive needle in setting-up time, continue the resistance value between igniting inductive needle and burner is detected in the burner igniting simultaneously; When resistance value less than when setting value, igniting is finished, it stops to the burner igniting igniting inductive needle, and timing circuit cuts out, magnetic valve still keeps channel status; When surpassing the setting-up time resistance value still greater than setting value, loss of ignition, it makes magnetic valve be off state, thereby cuts off the gas inlet pipe road automatically; After igniting was finished, it still continued the resistance value between detecting igniting inductive needle and burner, and when resistance value during less than setting value, stove fire is normal; When resistance value greater than when setting value, stove fire extinguishes, this control circuit promptly carries out another automatic ignition procedure that takes second place; When opening circuit (OFF) state when microswitch is, this control circuit makes magnetic valve be off state, cuts off the gas inlet pipe road, and stops to detect resistance value and igniting action; One power supply is in order to provide this device required electric power.
Now cooperate for an embodiment and be illustrated in the back:
Fig. 1 is the organigram of the utility model embodiment.
Fig. 2 is the floor map that the utility model push switch is watched by the bottom.
Fig. 3 is the front view of the housing of the utility model push switch.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the right view of Fig. 3.
Fig. 6 is the top view of Fig. 3.
Fig. 7 is the front view of the heart type cam depression bar of the utility model push switch.
Fig. 8 is the left view of Fig. 7.
Fig. 9 is the right view of Fig. 7.
Figure 10 is the schematic top view of Fig. 7.
Figure 11 system is along the cutaway view of 11-11 hatching line among Fig. 9.
Figure 12 is the plane zoomed-in view of Fig. 7 centre type cam path.
Figure 13 system is along the cutaway view of 13-13 hatching line among Figure 12.
Figure 14 system is along the cutaway view of 14-14 hatching line among Figure 12.
Figure 15 system is along the cutaway view of 15-15 hatching line among Figure 12.
Figure 16 is the action flow chart of the utility model control circuit.
Figure 17 is the schematic diagram that the utility model is adjusted the gas flow structure.
Figure 18 is that the utility model igniting inductive needle is housed in the interior schematic diagram of gas burner.
As shown in Figure 1, the utility model gas oven is put fire safety devices automatically and is included:
One magnetic valve 11 is located between the gas flow control valve 13 and gas inlet pipe 14 of gas table 12, is path (ON) or open circuit (OFF) in order to control gas inlet pipe road.The structure of this gas flow control valve 13 is identical substantially with the choke valve structure that traditional gas oven rotary switch is controlled, only the rigging position difference.This magnetic valve 11 also is a known structure, holds and does not give unnecessary details.
One push switch 15, but pressurized is axially displaced along one from an initial position, earlier just arrive an endpoint location through a centre position, oppositely return and rest on this centre position again, when pressurized once more, must return to this initial position from this centre position, when it arrives endpoint location, can back down magnetic valve 11 and make the gas inlet pipe road be channel status.The back explanation is held in detail structure and action about this push switch 15.
One microswitch 16, the control of the switch 15 that is pressed is when push switch 15 is path (ON) state during in the centre position, when push switch is (OFF) state that opens circuit during at initial position.
One igniting inductive needle 17 is located at gas burner 18 near side (ns)s, in order to gas burner 18 igniting, and can use the resistance value of detecting gas burner 18 and 17 of the inductive needles of lighting a fire.
One control circuit 19, the control of the switch 15 that is pressed is when push switch 15 is path (ON) state during in the centre position, when push switch is (OFF) state that opens circuit during at initial position.
One igniting inductive needle 17 is located at gas burner 18 near side (ns)s, in order to gas burner 18 igniting, and can use the resistance value of detecting gas burner 18 and 17 of the inductive needles of lighting a fire.
One control circuit 19 is subjected to the control of this microswitch 16, can control the igniting action of igniting inductive needle 17 pairs of burners 18, and the resistance value of detecting igniting inductive needle 17 and 18 of burners, reaches the keying (ON, OFF) of controlling this magnetic valve 11.
One power supply 20 is a dry cell batteries, in order to provide this device required electric power.
As shown in Figure 2, this push switch 15 includes:
One housing 21, its structure is shown in Fig. 3 to 6.
Type cam depression bar 22 wholeheartedly, its structure such as Fig. 7 are that capacity is in the guide groove 23 of housing 21 to shown in Figure 11.
One alignment pin 24, slightly be long rod type, the two ends bending, one end is plugged in the set trapezoidal groove 25 of housing 21 1 bottom walls, the other end stretches into the microscler cross-drilled hole 26 of housing 21 centres, and stretch in the set heart type cam path 27 in heart type cam depression bar 22 bottom surfaces, form a clamping end, in order to the stroke of control heart type cam depression bar 22.
One spring 28 is set in outside alignment pin 24 and the housing 21, and alignment pin 24 only can be deflected along microscler cross-drilled hole 26, and makes alignment pin 24 clamping ends prop up heart type cam path 27 diapires.
About the thin portion structure of this heart type cam path 27 shown in Figure 12 to 15.
This groove 27 has A, B, C, D, five groove sections of E, and around a middle bent type protuberance F, each groove Duan Jun has the different degree of depth, wherein the A section is the darkest, and B section and A section junction are contour or lower slightly, and height then then edges up, be the slope section, its other end is the highest, and the C section is high-end low than the B section, and its adjoiner forms a drop, the D section is low than the C section, the E section is low than the D section, and the A section is low than the E section again, and its adjoiner all forms a drop.These alignment pin 24 clamping end initial positions are to be arranged in Figure 12 A section right-hand member, when switch 15 by connecing when pressing, cam depression bar 22 right-hand displacement in the figure, alignment pin 24 clamping ends by the A section enter the B section (because of the E section high than the A section, alignment pin 24 clamping ends are blocked by the cliff that the drop section is formed, can't live section into E), enter the C section along the B section, and arrive the endpoint location of C section high order end among the figure; After user's relieving is pushed, spring 29 (the seeing also Fig. 1) elasticity that cam depression bar 22 is subjected to preset in the housing 21 return that the power of releasing returns back to top and in Figure 12 left side shifting, alignment pin 24 clamping ends by endpoint location along the relative motion of C section, enter the D section, and clip is in the recessed bent position of the curved protuberance of F, and this moment, push switch 15 mediated; When we pushed this switch 15 once more, alignment pin 24 clamping ends entered the E section by the D section, after we decontrol this switch 15, alignment pin 24 clamping ends promptly by the involution of E section to A section initial position, finish a circulation track.Above-mentioned action, in fact only intentionally type cam path 27 moves, and alignment pin 24 only is to cooperate cam path 27 to do to deflect.
See also shown in Figure 1ly again, the utility model is provided with an axostylus axostyle 30 at magnetic valve 11 and 15 of push switches, is arranged in a valve seat 31, these valve seat 31 perisporium hollow outs, the supplied gas break-through, axostylus axostyle 30 is located in a seal 32, one spring 33 is sheathed on axostylus axostyle 30, two ends and props up valve seat 31 and seal 32 respectively.
Manner of execution about the utility model is described as follows:
Please refer to Fig. 1, when not using, this push switch 15 is positioned at its initial position, and microswitch 16 was in and cut out (OFF) state this moment, and magnetic valve 11 closes (OFF), its valve end sealing ring 34 sealing gas channels, and axostylus axostyle 30 seal 34 are closed channel also.
When the user presses down push switch 15, the heart type cam depression bar 22 right-hand displacement in the figure that is ejection axostylus axostyle 30, axostylus axostyle 30 is that ejection magnetic valve 11 sealing rings 34 move to right, gas channel is opened (ON), gas can spray into burner 18 through flow control valve 13 by nozzle 35 via passage, mix with air, by the spray orifice outflow of burner top.At the same time, the microswitch control lever 36 shake-up microswitches 16 of cam depression bar 22 sides make and are the ON state, i.e. start-up control circuit 19 actions.These control circuit 19 transferring electric powers make generation suction to magnetic valve 11, and when push switch 15 was pressed down to endpoint location, sealing ring 34 was by nearly magnetic valve 11 bodies of right apical grafting, and was adsorbed, and make gas channel keep unimpeded.This control circuit 19 also produces high voltage, makes 18 igniting of 17 pairs of burners of igniting inductive needle.
When the user decontrols this push switch 15, this switch 15 promptly returns to the location, centre position, microswitch control lever 36 still props up microswitch 16 at this moment, microswitch 16 keeps the state of ON always, magnetic valve 11 continues to adsorb sealing ring 34, and that gas channel is kept is unimpeded, and gas channel is also sealed in the seal 32 of axostylus axostyle 30.
Be provided with a timing circuit in this control circuit 19, pick up counting when igniting, present embodiment is set at 5 seconds.The resistance value that this control circuit 19 and detecting igniting inductive needle 17 and burner are 18, when burner 18 is still unignited, its resistance value is high, yet after stove fire is lighted, carbon molecule of its generation and water vapour etc. will make resistance value significantly reduce, and the utility model promptly utilizes the variation of detecting igniting inductive needle 17 and 18 resistance values of burner to judge whether flame is lighted.
In setting-up time when resistance value less than when setting value, expression flame is lighted.Control circuit 19 17 pairs of burners of inductive needle 18 igniting that promptly stops to light a fire, timing circuit also stops, and only still keeps magnetic valve 11 to continue to hold sealing ring 34, and it is unimpeded that gas channel is kept, and continue igniting inductive needle 17 is sent detecting current, whether keep burning in order to the detecting stove fire.
When surpassing the setting-up time resistance value still greater than setting value, the expression loss of ignition, control circuit 19 promptly stops magnetic valve 11 output currents, magnetic valve 11 cuts out (OFF), sealing ring 34 is gone back to by the elasticity of spring 37 to release to try hard to recommend the top and automatically resets, and cuts off gas channel, prevents that gas from leaking outside.Detecting current and timing circuit are also closed in the lump.
When burner 18 flames extinguished because of wind or the soup juice that overflows in using, the resistance value that control circuit 19 detects burner 18 and 17 of igniting inductive needles became again greatly, i.e. the automatic ignition procedure of another time again: light a fire (in 5 seconds).
→ resistance value continues to boil and cooks a meal less than setting value (lighting a fire successfully).
→ resistance value is cut off gas supply greater than setting value (loss of ignition), prevents that gas from leaking.
When desiring the closed gas stove, the user only need push once this push switch 15 again, this switch 15 is promptly return initial position by the centre position, this moment, axostylus axostyle 30 and microswitch control lever 36 were all return original position, gas channel is sealed in sealing ring 34 and seal 32 once again, microswitch 16 is (OFF) state that opens circuit, and control circuit 19 is failure to actuate.
When loss of ignition, the user must push a push switch 15 earlier and make and switch to above-mentioned closed position, again push switch 15 igniting again.
Represent as shown in figure 16 about the flow process of this control circuit 19:
Is (1) microswitch opened?
(2) 17 pairs of burners of igniting inductive needle, 18 igniting, magnetic valve 11 leaves (ON).
(3) are detecting igniting inductive needle 17 and 18 resistance values of burner less than setting value?
(4) stop igniting, keep magnetic valve 11 to open (ON), continue the detecting resistance value.
(5) is resistance value less than setting value?
(6) whether surpass igniting timing setting-up time?
(7) magnetic valve 11 cuts out (OFF) and cuts off gas, stops igniting.
Is (8) the detecting cell voltage lower than setting value?
(9) alarming device action
(10) be failure to actuate
The utility model uses dry cell to be power supply, therefore establishes a cell voltage circuit for detecting in control circuit 19, if cell voltage is lower than when setting value, then warning lamp is bright, and the expression power shortage needs to change battery.
As Fig. 1 and shown in Figure 17, the utility model is provided with a traverse rod 38, one adjusting levers 39 and is hubbed on the traverse rod 38 in table 12, but left and right sides parallel slip, adjusting lever 39 tail ends are established an elongated slot 40, and driving lever 41 ends of flow control valve 13 then are contained in the elongated slot 40, adjust the gas flow size by this.
In addition, 12 tables of table are provided with a press button 42, and press button 42 is provided with guide groove slide block 43, and table 12 is provided with press button guide groove seat 44, and press button 42 can be pressed smoothly, in order to 15 actions of interlock push switch.
In addition, as shown in figure 18, this igniting inductive needle 17 also can be located at ring oven interior portion central authorities in the burner, and it is smooth and easy so can to guarantee to light a fire, and the inductive needle 17 of can avoiding lighting a fire is boiled the soup juice that overflows when cooking a meal and attaches.
The advantage of the utility model is that operation is very easy to, and only need depress press button 42, gas oven Be automatic ignition, igniting does not become and can automatically cut off gas supply, to prevent gas leakage. Use If in fray-out of flame, also automatic ignition again makes and boils the unlikely interruption of cooking a meal, if igniting does not become again, Then automatically cut off gas, guaranteeing safety, the user need not continue to press gas range switch until Flame ignition, and have automatically the effect of promoting of again igniting, its practicality, novelty and advance Step property is very clear and definite, and request your auditor and grasp in encouraging the constantly bring forth new ideas kindness of improvement of compatriots, Grant early quasi patent, the true feeling moral just.
Claims (4)
1. a gas oven is put fire safety devices automatically, includes:
One magnetic valve is located between the gas flow control valve and gas inlet pipe of gas oven, is path (ON) or open circuit (OFF) in order to control gas inlet pipe road;
One push switch, but pressurized is axially displaced along one from an initial position, earlier just arrive an endpoint location through a centre position, oppositely return and rest on this centre position again, when pressurized once more from this centre position involution to this initial position, when it arrives endpoint location, can back down magnetic valve and make the gas inlet pipe road be channel status;
One microswitch, the control of the switch that is pressed is when push switch is path (ON) state during in the centre position, when push switch is (OFF) state that opens circuit during at initial position;
One igniting inductive needle, contiguous gas burner in order to the igniting of gas burner, and can be used detecting gas burner and the resistance value of lighting a fire between inductive needle;
One control circuit, be subjected to the control of this microswitch, can control of the igniting action of igniting inductive needle to burner, and the resistance value between detecting igniting inductive needle and burner, and the keying (ON of this magnetic valve of control, OFF), its inner tool one timing circuit, when this microswitch is channel status, this control circuit carries out automatic ignition procedure, timing circuit in it starts, and makes magnetic valve keep channel status in setting-up time, and the gas inlet pipe road is held open, and make the igniting inductive needle in setting-up time, continue the resistance value between igniting inductive needle and burner is detected in the burner igniting simultaneously; When resistance value less than when setting value, igniting is finished, it stops to the burner igniting igniting inductive needle, and timing circuit cuts out, magnetic valve still keeps channel status; When surpassing the setting-up time resistance value still greater than setting value, loss of ignition, it makes magnetic valve be off state, thereby cuts off the gas inlet pipe road automatically; After igniting was finished, it still continued the resistance value between detecting igniting inductive needle and burner, and when resistance value during less than setting value, stove fire is normal; When resistance value greater than when setting value, stove fire extinguishes, this control circuit promptly carries out another automatic ignition procedure that takes second place; When opening circuit (OFF) state when microswitch is, this control circuit makes magnetic valve be off state, cuts off the gas inlet pipe road, and stops to detect resistance value and igniting action;
One power supply is in order to provide this device required electric power.
2. put fire safety devices automatically according to the described gas oven of claim 1, it is characterized in that being provided with between this magnetic valve and push switch an axostylus axostyle, be arranged in a valve seat, this valve seat perisporium hollow out, the supplied gas break-through, axostylus axostyle is located in one seal, and a spring housing is located at axostylus axostyle, and two ends prop up valve seat respectively and envelope is enclosed.
3. put fire safety devices automatically according to the described gas oven of claim 1, it is characterized in that this push switch includes: a housing; Wholeheartedly type cam depression bar is contained in the default guide groove of housing; One alignment pin, slightly be stock shape, the two ends bending, one end is plugged in the default trapezoidal groove of housing one bottom wall, the other end stretches into the middle default elongate slot of housing, and stretch in the default heart type cam path in heart type cam depression bar bottom surface, form a clamping end, in order to the stroke of control heart type cam depression bar; One spring is set in outside alignment pin and the housing, and alignment pin only can be deflected along elongate slot, and makes the alignment pin clamping end prop up heart type cam path diapire.
4. put fire safety devices automatically according to the described gas oven of claim 3, it is characterized in that this heart type cam path has A, B, C, D, five groove sections of E, around a middle bent type protuberance F, each groove Duan Jun has the different degree of depth, wherein the A section is the darkest, B section and A section junction are contour or lower slightly, then the height that edges up then is the slope section, and its other end is the highest, the C section is high-end low than the B section, its adjoiner forms a drop, and the D section is low than the C section, and the E section is low than the D section, the A section is low than the E section again, and its adjoiner all forms a drop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95203184 CN2272110Y (en) | 1995-02-16 | 1995-02-16 | Automatic ignition safety device for gas stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95203184 CN2272110Y (en) | 1995-02-16 | 1995-02-16 | Automatic ignition safety device for gas stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2272110Y true CN2272110Y (en) | 1998-01-07 |
Family
ID=33856110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95203184 Expired - Fee Related CN2272110Y (en) | 1995-02-16 | 1995-02-16 | Automatic ignition safety device for gas stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2272110Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1302228C (en) * | 2002-07-09 | 2007-02-28 | 林内株式会社 | Fuel gas control device |
-
1995
- 1995-02-16 CN CN 95203184 patent/CN2272110Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1302228C (en) * | 2002-07-09 | 2007-02-28 | 林内株式会社 | Fuel gas control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |