CN2662085Y

CN2662085Y - Automatic closing device for dry burning of gas stove cooker

Info

Publication number: CN2662085Y
Application number: CN 200320116791
Authority: CN
Inventors: 徐忠雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-11-25
Filing date: 2003-11-25
Publication date: 2004-12-08
Anticipated expiration: 2013-11-25

Abstract

The utility model relates to an automatic shutdown device for the gas stove vacant pot heating, comprising a gas masking device, a heat conduction device for gas valve open and close operation which controls the gas masking device. A base body of the gas masking device is arranged at a gas operated cavity between the air outlet of an air supply duct and the air inlet of a gas control switch. A valve which is driven by the spring action of thrust normally masks the air inlet of a gas control switch, and the valve is pivoted with a shaft lever on the base body. The heat conduction device comprises a sensible heat unit, a catheter and a telescopic unit. A sealing pipeline is formed between the sensible heat unit and the telescopic unit connected by the catheter, wherein the sealing pipeline is full of heat conduction solution. The sensible heat unit is arranged near the gas fire, touching the bottom surface of cooking utensils; the telescopic unit is fixed on the terminal of the base body on gas masking device. When in operation, the sensible heat unit detects the heat of pan bottom, thus the telescopic unit can stretch and move the shaft lever to close the gas valve when vacant combustion happens and safety is ensured by stopping heating the cooking utensils.

Description

Gas oven is cooked the empty self closing device that burns of tool

Technical field

The utility model is that relevant a kind of gas oven is cooked the empty self closing device that burns of tool, especially refer to a kind of switching running of cooking the empty burning state of tool and controlling the gas masking device that detects by a heat transfer device, make gas stove when cooking the situation of the empty burning of tool generation, get final product automatic closed gas flame, safe in utilization to keep gas.

Background technology

In the common culinary art operation, for example be to stew to endure food, boil soup or when boiling water, because of its culinary art heat time heating time long, cooker is the culinary art situation of omnidistance treatment on the scene during cooking usually, if especially cooker is because of forgetful or be busy with the thing that his thing is neglected culinary art, often allow stove fire continues for a long time to cooking the tool heating, cause the moisture in the pot to dryout the state that the empty burning of tool is cooked in formation, this result gently then causes cooking thing and burns and can't eat, the empty high heat of burning of severe patient; The article that boil that will ignite, even gas combustion gas cause fire and endanger public security.

Order is now cooked the danger that the empty burning of tool is caused for taking precautions against gas, be to have the same trade to propose multiple improvement project in advance, " the empty device that burns that prevents that is used for gas oven " of No. the 87215679th, Taiwan patent for example, it mainly is to establish an excess temperature perception circuit on the right tool of gas, borrow thermistor to be subjected to variation of temperature and then control the switch motion of a relay, and then the thermocouple that connects on the relay is dammed, thereby closed gas; " control method to boil water of gas oven " of No. the 90120805th, Taiwan patent and for example, also be to utilize a temperature detector that can detect the pan water temperature, the water temperature signal of arranging in pairs or groups contrast judging circuit when water temperature arrives (or surpassing) preset temperature range, borrows a control circuit to come closed gas; To sum up explanation as can be known, it almost completely is to utilize the running of temperature detector collocation electronic control circuit that aforementioned gas is cooked the empty scheme of burning of tool, when temperature detector predicts when cooking tool and being in empty burning state, this electronic control circuit impels gas valve to close, yet, as everyone knows, this high temperature in the kitchen, in the environment that moisture is heavy and heavy wool is dirty, the application of electronic circuit be very easy to damage or fault, so that can not normal operation, in addition, these electronic circuits normally can normal operation by the driven by power of dry cell, careless user is also often arranged because of being negligent of changing battery, cause the circuit can't normal operation, and lose the purpose that is provided with of safety device.

The utility model content

In view of this, the utility model is that a kind of non-" gas oven is cooked the empty self closing device that burns of tool " via electronic circuit control is provided, it mainly is the switching running of borrowing a heat transfer device to control the gas masking device, when cooking tool and produce empty situation of burning on the gas burner, get final product automatic closed gas flame, safe in utilization to safeguard gas.

According to the utility model, this heat transfer device is collocation one a gas masking device and operating, this heat transfer device then comprises a sensible heat unit, a conduit and a telescopic unit, make this conduit be linked between this sensible heat unit and the telescopic unit, and in the sealing pipeline of this heat transfer device, be full of and have the heat-transferring solution that is easy to the cold shrinkage and thermal expansion characteristic, wherein, this sensible heat unit is set near the gas stove fire, and touch in the cooking pot tool bottom surface, and this telescopic unit is installed in the gas masking device, borrows its flexible displacement action to control the keying of gas valve.

During running, utilize this sensible heat unit to predict the temperature in the bottom of a pan, and the effect of the heat-conducting medium cold shrinkage and thermal expansion principle of the heating power that this sensible heat unit is born in this heat transfer device and the binding of this conduit, impel this telescopic unit forward projection with the action shaft of ejection gas valve; Under normal culinary art situation, the swell increment of this heat-conducting medium is still not enough backs down this action shaft with the closed gas valve so that this telescopic unit is elongated to; And when cooking tool and be in empty burning state, this touches that sensible heat unit at the bottom of pot will bear higher heat and the swell increment that increases this heat-conducting medium, make this telescopic unit elongation and back down this action shaft, stop the gas stove fire and continue cooking the tool heating with the closed gas valve.

According to the utility model, can establish a spring in this telescopic unit front end, borrow this spring that the elongation displacement of this telescopic unit is produced retardance strength, the adjustable settings sky burns the relation between temperature and the gas valve closing in view of the above, for example, when selecting the spring of more weak elastic force, be subjected to less resistance during this telescopic unit elongation, so when burning temperature, get final product the closed gas valve than the low latitude, opposite, when the spring selected than strong elastic, be subjected to bigger resistance during this telescopic unit elongation, so can when higher sky burns temperature, just understand closed gas.

Relevant other features of the present utility model and function; after cooperating following graphic being further described; your juror phase can make more detailed understanding is arranged; only the following stated person only is in order to explain preferred embodiment of the present utility model; be not that attempt is done any pro forma restriction to the utility model according to this; be with, all have in that identical utility model spirit is following do relevant any modification of the present utility model or change, all must be included in the category of the utility model intention protection.

Description of drawings

Fig. 1 is the profile of gas masking device of the present utility model, shows that this gas valve is in closing state;

Fig. 2 is that schematic diagram is installed in the sensible heat unit of heat transfer device of the present utility model;

Fig. 3 is the profile of gas masking device of the present utility model, shows the operation chart that this gas valve initially is being unlocked; And

Fig. 4 is the profile of gas masking device of the present utility model, shows the state that this gas valve has been opened.

The specific embodiment

Shown in the accompanying drawing of back, the utility model embodiment mainly comprises one group and is arranged on the gas gauge tap 2 of gas stove and the gas masking device 1 between the gas gas supply pipeline 3, and one group of heat transfer device 6 that is used for controlling the gas valve opening and closing running of this gas masking device 1.

This heat transfer device 6 tools one sensible heat unit 61, a conduit 62 and a telescopic unit 63, make this conduit 62 be linked between this sensible heat unit 61 and the telescopic unit 63 and form a sealing pipeline, and in the sealing pipeline of this heat transfer device 6, be full of and have the heat-transferring solution that is easy to the cold shrinkage and thermal expansion characteristic; Wherein, as shown in Figure 2, this sensible heat unit 61 is to be set near gas burner 8 hot spots and to touch in cooking pot tool 9 bottom surfaces, best, this sensible heat unit 61 is installed in female flame rings 81 central parts of burner, to avoid being subjected to directly burning of stove fire, the empty accuracy that detects of burning of tool is cooked in influence; This telescopic unit 63 then is installed in the gas masking device 1, borrows its flexible displacement action to twist the keying of system gas valve.

And this gas masking device 1 is borrowed a pedestal 11 and is screwed togather in the air guide chamber 22 that is fixedly arranged on these gas gauge tap 2 rearward end, it has the valve 12 of a telescopic action, can be in order to the air inlet 21 that covers this gas gauge tap, this valve 12 pivots unification axostylus axostyle 13, and this axostylus axostyle 13 be with axial activity freely the earth's axis be combined on the sleeve 14, be arranged with a spring 15 on this axostylus axostyle 13 and between this valve 12 and sleeve 14 again, make this valve 12 must be subjected to the thrust of this spring 15 in view of the above, and the closure that is normality is in the state of this gas air inlet 21.

In addition, be provided with the telescopic unit 63 of a magnetic head 16, one group of electromagnet 17 and aforementioned heat transfer device in the inside cavity of this sleeve 14, wherein, this magnetic head 16 is on this axostylus axostyle 13 of fixed son, and this electromagnet 17 is fixedly arranged on this position, sleeve 14 stage casing, and twine the coil 18 that one group of controlled circuit of work (not being shown in drawing) is controlled, and establish a through hole in these electromagnet 17 axle center, with hold for aforementioned axostylus axostyle 13 stretch establish by and its tip end projects is gone out; And this telescopic unit 63 slightly is a snake belly type body, is the cavity distal portion that is fixedly arranged on aforementioned sleeve 14.

And with respect to the setting of aforementioned gas masking device 1, make the central shaft 23 of the spirally-controlled button of this gas gauge tap 2 can do axial displacement, and the sheathed spring 24 at the position, stage casing of this central shaft 23 makes this central shaft 23 be given as security the back and must borrow the elastic force effect of this spring 24 and the involution original position when discharging; In addition, this central shaft 23 has near an extensible tail end 231 that arrives at the aforementioned valve 12, and the pallet 25 that protrudes in these central shaft 23 front ends sheathed, and set firmly a microswitch 52 that is connected to aforementioned control circuit (not being shown in drawing) at this pallet side.

The utility model function mode explanation: as shown in Figure 3, when enabling Gas cooker, the user need give as security into and the rotation gas switch spirally-controlled button 29 so that light burner flame, go into action to the signature of gas switch spirally-controlled button 29 this moment, the tail end 231 that makes its central shaft 23 is the position Zhi Dingkai of this valve 12 from sealing air inlet 21, allows Device in Gas be entered the flow divider 28 of this gas gauge tap 2 and air feed to burner burns.And the spinning movement of the spirally-controlled button 29 that continues, make the pallet 25 of these central shaft 23 front ends touch this microswitch 52, make this coil 18 of this control circuit order excitatory, creation one electromagnetic field on this group electromagnet 17, and this is subjected to that this central shaft tail end 231 is replaced and seizes near magnetic head 16 stickings of this electromagnet 17, make this valve 12 remain on the state of unlatching together with ground, continue the supply Device in Gas to burner burning (as shown in Figure 4).

Under normal culinary art situation, touch the heat that is received in this sensible heat unit 61 of cooking pot tool bottom surface, though the heat-transferring solutions in this heat transfer device 6 are expanded, the swell increment of this heat-transferring solution is still not enough so that this telescopic unit 63 be elongated to back down this valve axostylus axostyle 13 with the closed gas valve; And when the situation of empty burning takes place cooking pot tool, the high heat in the bottom of a pan will make a large amount of rapidly expansions of the volume of the heat-transferring solution in this heat transfer device 6, this heat-transferring solution is by the water conservancy diversion of this conduit 62, this telescopic unit 63 is extended gradually, and with the end of this axostylus axostyle 13 of end face ejection, overcome the magnetic strength of this electromagnet 17 up to this thrust, the suction that makes this magnetic head 16 break away from this electromagnet 17 is pulled, and this valve 12 is sheathed on the restoring force effect of the spring 15 on this axostylus axostyle 13 and cover this gas air inlet 21, cut off Device in Gas in view of the above and advance to continue the supply burner, the harm of avoiding the empty burning of gas to be caused.Moreover after stove fire was closed, this heat transfer device 6 no longer was heated, and inner heat-transferring solution cooling will make this telescopic unit 63 original position of withdrawing gradually.

According to previous constructions of the present utility model, we also can establish a spring 68 between telescopic unit 63 in this gas masking device 1 and electromagnet 17, borrow this spring that the elongation displacement of this telescopic unit is produced retardance strength, with the setting between the sky burning degree of adjusting this gas valve closing.

Claims

1, a kind of gas oven is cooked the empty self closing device that burns of tool, mainly comprise the heat transfer device that one group of gas masking device and a group are used for controlling the gas valve opening and closing running of this gas masking device, this gas masking device is to connect in the air guide chamber between the air inlet of the gas outlet that is located at the gas air supply pipe and gas gauge tap with its base body, have that a valve is subjected to the thrust of spring and the air inlet that covers this gas gauge tap normally, and this valve pivot unification quilt axle closes the axostylus axostyle on aforementioned base body, and this fixed magnetic head in position, axostylus axostyle stage casing, be provided with one group of electromagnet that is fixed on the aforementioned base body in this magnetic head subtend position in addition, and one group of coil that is controlled by control circuit of winding work on this electromagnet, and establish a through hole in this electromagnet axle center, with hold for aforementioned axostylus axostyle stretch establish by and its end is gone out from this through hole projection, it is characterized in that: this heat transfer device is by a sensible heat unit, one conduit and a telescopic unit are formed jointly, make this conduit be linked to and form a sealing pipeline between this sensible heat unit and the telescopic unit, and in the sealing pipeline of this heat transfer device, be full of and have the heat-transferring solution that is easy to the cold shrinkage and thermal expansion characteristic, and this sensible heat unit is set near the gas stove fire and touches in the cooking pot tool bottom surface, this telescopic unit then is fixedly arranged on the base body distal portion of aforementioned gas masking device, borrows its telescopic displacement to replace aforementioned axostylus axostyle end to control the keying of this gas valve.

2, gas oven as claimed in claim 1 is cooked the empty self closing device that burns of tool, it is characterized in that, more comprises: establish a spring between telescopic unit in the base body of aforementioned gas masking device and the electromagnet.