CN207132385U - A kind of gas-cooker - Google Patents
A kind of gas-cooker Download PDFInfo
- Publication number
- CN207132385U CN207132385U CN201721012927.2U CN201721012927U CN207132385U CN 207132385 U CN207132385 U CN 207132385U CN 201721012927 U CN201721012927 U CN 201721012927U CN 207132385 U CN207132385 U CN 207132385U
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- China
- Prior art keywords
- thermocouple
- electromotive force
- operational amplifier
- resistance
- magnetic valve
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- 238000001514 detection method Methods 0.000 claims abstract description 45
- 239000000567 combustion gas Substances 0.000 claims abstract description 8
- 210000005069 ears Anatomy 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 10
- 238000007689 inspection Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims 1
- 230000005619 thermoelectricity Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000005381 potential energy Methods 0.000 abstract 1
- 238000010411 cooking Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000036982 action potential Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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Abstract
A kind of gas-cooker is the utility model is related to, including for opening or closing the magnetic valve of combustion gas, the burner connected with magnetic valve, the ignition electrode and thermocouple being arranged on by burner, it is characterised in that：Two output ends of thermocouple and two feeder ears of magnetic valve are connected, and two output ends of thermocouple also detect circuit by thermocouple electromotive force and connected, and the output end of thermocouple electromotive force detection circuit is connected with control module.Compared with prior art, the utility model has the advantage of：In scheme provided by the utility model, the electronic potential energy of thermocouple normally maintains magnetic valve to inhale energy needed for valve, the circuit of thermocouple electromotive force detection simultaneously can be acquired to thermocouple electromotive force again, judge that burner operation state provides foundation for control module, both the use value of thermocouple had been improved, has also reduced the cost of product.
Description
Technical field
It the utility model is related to a kind of gas-cooker.
Background technology
Existing gas-cooker is divided into two classes, and one kind is to use battery powered, and its function is relatively simple, and battery is mainly to point
Firearm power supply makes igniter realize igniting and zero second suction valve；Also one kind is for intelligent stove, and using mains-supplied, civil power is through turning
It is used for lighting a fire after changing, maintains firepower regulation and some other intelligent function.Thermocouple in gas-cooker, only provide normal maintain
Energy needed for magnetic valve suction valve, does not make other purposes.With pursuit of the people to quality of the life and the cost performance of gas-cooker,
One kind only general gas stove of igniting and zero second suction valve can not meet user's request；Second class uses the combustion gas of mains-supplied
Stove is because its solenoid valve control, operation and other functions use Electronic Control, and its cost is higher, and battery electric quantity can not meet more
The long-term power supply of individual electronic control module, while under function complex situations, security reliability also collides with each other, while anticipated in people
Combustion gas and civil power are combined in the presence of very big potential safety hazard in knowledge.
Therefore a kind of battery powered but the gas-cooker with the function such as some anti-dry, health prompt is that consumer is chased after
Ask.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of thermocouple electromotive force energy for above-mentioned prior art
The normal gas-cooker for maintaining energy needed for magnetic valve suction valve to be acquired again to thermocouple electromotive force.
Technical scheme is used by the utility model solves above-mentioned technical problem：A kind of gas-cooker, including for opening
Or close the magnetic valve of combustion gas, the burner connected with magnetic valve, the ignition electrode and thermocouple being arranged on by burner, its feature
It is：Two output ends of thermocouple and two feeder ears of magnetic valve connect, and two output ends of thermocouple are also electronic by thermocouple
Gesture detection circuit connection, the output end of thermocouple electromotive force detection circuit are connected with control module, and wherein thermocouple electromotive force is examined
Slowdown monitoring circuit includes the first operational amplifier, the second operational amplifier, first resistor, second resistance, 3rd resistor, the 4th resistance,
The negative pole of 5th resistance and the 3rd operational amplifier, wherein thermocouple is connected with the in-phase input end of the first operational amplifier, the
The inverting input of one operational amplifier is connected with the output end of the first operational amplifier, and the positive pole of thermocouple is put with the second computing
The in-phase input end connection of big device, the inverting input of the second operational amplifier are connected with the output end of the second operational amplifier,
The first end of the output end connection first resistor of first operational amplifier, the second end and the 3rd operational amplifier of first resistor
Inverting input connects, the first end of the output end of the second operational amplifier connection second resistance, the second end of second resistance with
The in-phase input end connection of 3rd operational amplifier, 3rd resistor are connected to inverting input and the output of the 3rd operational amplifier
Between end, the first end of the 4th resistance is connected with the in-phase input end of the 3rd operational amplifier, the second end ground connection of the 4th resistance；
The output end of 3rd operational amplifier connects the first end of the 5th resistance, and the second end of the 5th resistance is connected with control module, controls
Molding root tuber according to thermocouple electromotive force detect circuit output thermocouple electromotive force, judge burner be in have fire or without fire also
It is igniting or closes fire or accident extinguishing.
As an improvement, the first resistor is identical with second resistance resistance, 3rd resistor is identical with the 4th resistance, heat
The multiplication factor of galvanic couple electromotive force detection circuit is 3rd resistor divided by first resistor=100, when thermocouple electromotive force detects electricity
Road detects judges there is fire when thermocouple electromotive force is more than 1.5mV, when thermocouple electromotive force detects electric circuit inspection to thermocouple electricity
Judge that fire has extinguished when pressure is less than 1.5mV, when thermocouple electromotive force detection electric circuit inspection to thermocouple electromotive force is zero, Zhi Houjian
It is cumulative big and judge burner ignition and successfully more than 1.5mV；When thermocouple electromotive force detection electric circuit inspection is electronic to thermocouple
Gesture drops quickly to 1.5mV from much larger than 1.5mV, judges that burner closes fire or accident extinguishing.
Improve again, gas-cooker provided by the utility model also includes the display module being connected with control module.
Improve again, it is control module, display module and thermocouple electromotive force that gas-cooker provided by the utility model, which also includes,
The battery of circuit power supply is detected, the side of the magnetic valve is provided with what is disconnected when conducting, closed electromagnetic valve when magnetic valve is opened
Microswitch, the microswitch are connected on battery and detect circuit power supply for control module, display module and thermocouple electromotive force
On current supply circuit.
Compared with prior art, the utility model has the advantage of：In scheme provided by the utility model, the electricity of thermocouple
Action potential normally maintains magnetic valve to inhale energy needed for valve, while thermocouple electromotive force detection circuit again can be to thermocouple electromotive force
It is acquired, judges that burner operation state provides foundation for control module, both improved the use value of thermocouple, also lowered
The cost of product；In addition, in improvement project, using battery powered, when magnetic valve is opened, microswitch turns on, thermocouple
Electricity enters working condition on electromotive force detection circuit, control module and display module, and when closed electromagnetic valve, microswitch breaks
Open, thermocouple electromotive force detection circuit, control module and display module dead electricity are closed, and save battery electric quantity.
Brief description of the drawings
Fig. 1 is that the module of gas-cooker in the utility model embodiment connects block diagram；
Fig. 2 is the circuit theory diagrams that thermocouple and thermocouple electromotive force detect circuit in the utility model embodiment；
Fig. 3 is the control method flow chart of intelligent stove in the utility model embodiment.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
Intelligent stove as described in Figure 1, including for opening or closing the magnetic valve of combustion gas, the burning connected with magnetic valve
Device, the ignition electrode and thermocouple being arranged on by burner, function detection module, the control module being connected with function detection module,
The display module being connected with control module, it is the battery of function detection module, control module and display module power supply；Function detection
Module then includes flame detection modules, cooking bottom temperature detection module, pan detection module and battery electric quantity detection module；Magnetic valve
Side be provided with turned on when magnetic valve is opened, closed electromagnetic valve when the microswitch that disconnects, the microswitch is connected on battery
On the current supply circuit powered for function detection module, control module, display module.
The flame detection modules include thermocouple and thermocouple electromotive force detection circuit, shown in Figure 2, thermocouple electricity
EMF detection circuit includes the first operational amplifier U1A, the second operational amplifier U2A, first resistor R1, second resistance R2, the
Three resistance R3, the 4th resistance R4, the 5th resistance R5 and the 3rd operational amplifier U1B, the wherein negative pole of thermocouple and the first computing
Amplifier U1A in-phase input end connection, the first operational amplifier U1A inverting input and the first operational amplifier U1A's
Output end is connected, and the positive pole of thermocouple is connected with the second operational amplifier U2A in-phase input end, the second operational amplifier U2A
Inverting input be connected with the second operational amplifier U2A output end, the first operational amplifier U1A output end connection first
Resistance R1 first end, first resistor R2 the second end are connected with the 3rd operational amplifier U1B inverting input, the second computing
Amplifier U2A output end connection second resistance R2 first end, second resistance R2 the second end and the 3rd operational amplifier U1B
In-phase input end connection, 3rd resistor R3 is connected between inverting input and the output end of the 3rd operational amplifier, the 4th
Resistance R4 first end is connected with the 3rd operational amplifier U1B in-phase input end, the 4th resistance R4 the second end ground connection；3rd
Operational amplifier U1B output end connects the 5th resistance R5 first end, and the 5th resistance R5 the second end is connected with control module.
Two feeder ears of the both ends of thermocouple and magnetic valve connect simultaneously.
In the present embodiment, first resistor and second resistance can be using 2K Ω resistance, and 3rd resistor and the 4th resistance can
To use 200K Ω resistance, multiplication factor is 100 times, judges there is fire when detecting that thermocouple electromotive force is more than 1.5mV, works as heat
Judge that fire has extinguished when galvanic couple voltage is less than 1.5mV.When thermocouple electromotive force is zero, increases gradually afterwards and sentence more than 1.5mV
Disconnected kitchen range igniting and successfully.When thermocouple electromotive force drops quickly to 1.5mV from much larger than 1.5mV, judge kitchen range close fire or
Accident extinguishing；Control module is corresponding by having fire, being carried out without fire, igniting, the analysis for the every kind of state for closing fire and accident extinguishing
Intelligent control, so that it is guaranteed that control is accurate and reliable.
In the present embodiment, the electromotive force of thermocouple has the parallel output end of the identical electromotive force of two-way, and output end connects all the way
It is connected on the magnetic valve of control combustion gas conducting, another way output end is connected on thermocouple electromotive force detection circuit.Control combustion gas
The magnetic valve of conducting maintains the adhesive of magnetic valve, gas circuit circulation, in nothing using electromotive force caused by thermocouple in the case where there is fiery state
In the case of fire, thermocouple produces without electromotive force, and magnetic valve is opened gas circuit and closed.Thermocouple electromotive force detection circuit has " void is disconnected "
Characteristic, i.e. the electromotive force of thermocouple is equivalently employed without electric current when being connected to thermocouple electromotive force detection circuit and flows through, therefore completely
Valve is inhaled in the maintenance for not influenceing thermocouple electromotive force.
The control method of above-mentioned intelligent stove, comprises the following steps, shown in Figure 3：
Step 1: judge whether magnetic valve is opened, such as magnetic valve opening, microswitch conducting, function detection module, control
Module, display module start power up work, into step 2；Such as closed electromagnetic valve, microswitch disconnects, function detection module,
Control module, display module dead electricity are closed, and are then back to step 1；
Step 2: testing result of the control module by battery electric quantity detection module, judges whether battery electric quantity is less than threshold
Value, in this way, display module show that battery electric quantity is low, close flame detection modules, cooking bottom temperature detection module, pan detection mould
Block；Otherwise, into step 3；
Step 3: fire has been detected whether by flame detection modules, and it is in this way, such as no into step 4, it is functional to close institute
Detection module, control module and display module, return to step one；
Step 4: pan is determined whether by pan detection module, in this way, into step 5, if not being to start no pot
Timing, judges whether no pot timing time continues one minute, in this way, Guan Huo, close all function detection modules, control module and
Display module, return to step one, if not being, return to step three；
Step 5: gathering cooking bottom temperature by cooking bottom temperature detection module, judge whether that dry combustion method occurs, in this way, Guan Huo, close
All function detection modules, control module and display module, return to step one, if not being, return to step three.
Claims (4)
1. a kind of gas-cooker, including for opening or closing the magnetic valve of combustion gas, the burner that is connected with magnetic valve is arranged on combustion
Ignition electrode and thermocouple by burner, it is characterised in that：Two output ends of thermocouple and two feeder ears of magnetic valve connect, thermoelectricity
Two even output ends also detect circuit by thermocouple electromotive force and connected, the output end of thermocouple electromotive force detection circuit and control
Module connects, and wherein thermocouple electromotive force detection circuit includes the first operational amplifier, the second operational amplifier, first resistor,
Second resistance, 3rd resistor, the 4th resistance, the 5th resistance and the 3rd operational amplifier, the wherein negative pole of thermocouple and the first fortune
Calculate the output end company of the in-phase input end connection of amplifier, the inverting input of the first operational amplifier and the first operational amplifier
Connect, the positive pole of thermocouple is connected with the in-phase input end of the second operational amplifier, the inverting input of the second operational amplifier with
The output end connection of second operational amplifier, the first end of the output end connection first resistor of the first operational amplifier, the first electricity
Second end of resistance is connected with the inverting input of the 3rd operational amplifier, the output end connection second resistance of the second operational amplifier
First end, the second end of second resistance is connected with the in-phase input end of the 3rd operational amplifier, and 3rd resistor is connected to the 3rd
Between the inverting input and output end of operational amplifier, the first end of the 4th resistance and the homophase input of the 3rd operational amplifier
End connection, the second end ground connection of the 4th resistance；The output end of 3rd operational amplifier connects the first end of the 5th resistance, the 5th electricity
Second end of resistance is connected with control module, and control module detects the thermocouple electromotive force of circuit output according to thermocouple electromotive force,
Judge burner be in have fire or without fire or igniting or close fire or accident extinguishing.
2. gas-cooker according to claim 1, it is characterised in that：The first resistor is identical with second resistance resistance, the
Three resistance and the 4th resistance are identical, and the multiplication factor of thermocouple electromotive force detection circuit is 3rd resistor divided by first resistor
=100, judge there is fire when thermocouple electromotive force detection electric circuit inspection is more than 1.5mV to thermocouple electromotive force, when thermocouple electricity
EMF detection circuit, which detects, judges that fire has extinguished when thermocouple voltages are less than 1.5mV, when thermocouple electromotive force detection circuit inspection
It is zero to measure thermocouple electromotive force, increase and judges burner ignition and successfully more than 1.5mV gradually afterwards；When thermocouple is electronic
Gesture detection electric circuit inspection drops quickly to 1.5mV to thermocouple electromotive force from much larger than 1.5mV, judges that burner closes fire or meaning
It is outer flame-out.
3. gas-cooker according to claim 2, it is characterised in that：Also include the display module being connected with control module.
4. gas-cooker according to claim 3, it is characterised in that：It is control module, display module and thermocouple also to include
The battery of electromotive force detection circuit power supply, when the side of the magnetic valve is provided with conducting, closed electromagnetic valve when magnetic valve is opened
The microswitch of disconnection, the microswitch are connected on battery and detect circuit for control module, display module and thermocouple electromotive force
On the current supply circuit of power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721012927.2U CN207132385U (en) | 2017-08-14 | 2017-08-14 | A kind of gas-cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721012927.2U CN207132385U (en) | 2017-08-14 | 2017-08-14 | A kind of gas-cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207132385U true CN207132385U (en) | 2018-03-23 |
Family
ID=61634680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721012927.2U Withdrawn - After Issue CN207132385U (en) | 2017-08-14 | 2017-08-14 | A kind of gas-cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207132385U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386844A (en) * | 2017-08-14 | 2019-02-26 | 宁波方太厨具有限公司 | A kind of gas-cooker |
| CN111256172A (en) * | 2018-11-30 | 2020-06-09 | 宁波方太厨具有限公司 | Control method of gas stove and gas stove for realizing control method |
| WO2023180603A1 (en) | 2022-03-25 | 2023-09-28 | Orkli, S.Coop. | Thermoelectric safety device in the absence of flame for gas combustion systems |
-
2017
- 2017-08-14 CN CN201721012927.2U patent/CN207132385U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386844A (en) * | 2017-08-14 | 2019-02-26 | 宁波方太厨具有限公司 | A kind of gas-cooker |
| CN109386844B (en) * | 2017-08-14 | 2023-11-17 | 宁波方太厨具有限公司 | Gas stove |
| CN111256172A (en) * | 2018-11-30 | 2020-06-09 | 宁波方太厨具有限公司 | Control method of gas stove and gas stove for realizing control method |
| WO2023180603A1 (en) | 2022-03-25 | 2023-09-28 | Orkli, S.Coop. | Thermoelectric safety device in the absence of flame for gas combustion systems |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180323 Effective date of abandoning: 20231117 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180323 Effective date of abandoning: 20231117 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |