CN106979539A - Gas-cooker and its accident extinguishing detection and warning device - Google Patents
Gas-cooker and its accident extinguishing detection and warning device Download PDFInfo
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- CN106979539A CN106979539A CN201710278045.9A CN201710278045A CN106979539A CN 106979539 A CN106979539 A CN 106979539A CN 201710278045 A CN201710278045 A CN 201710278045A CN 106979539 A CN106979539 A CN 106979539A
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- cooker
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/126—Arrangement or mounting of control or safety devices on ranges
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Abstract
The invention discloses a kind of gas-cooker and its accident extinguishing detection and warning device, including accident extinguishing detection means, judge whether coal gas rotary valve (400) is in valve opening state by valve rod rotation angle detector (401), and judge whether burner (300) stops working by temperature-sensitive thermocouple (301), when judging that coal gas rotary valve is in valve opening state and flame-out burner, corresponding accident extinguishing signal is generated；And accident extinguishing warning device, accident extinguishing detection means is electrically connected, accident extinguishing alarm is sent when receiving accident extinguishing signal.In the gas-cooker of the present invention, accident extinguishing detection means by accident extinguishing warning device can send accident extinguishing audio alert etc. in accident extinguishing.By blunt, the propagation promptness of voice alarm, it can allow and know accident extinguishing event even if the person in middle and old age user also very first time, counter-measure can be so taken in time, it is to avoid the security incident such as culinary art failure or even gas leak occurs caused by reaction not in time.
Description
Technical field
The invention belongs to field of kitchen electric appliance, in particular it relates to a kind of gas-cooker and its accident extinguishing detection and alarm dress
Put.
Background technology
The development of gas kitchen ranges increasingly safety-sensitive the problem of, but many safety feedback functions are not very straight at present
See, particularly when gas-cooker user is generally the elderly in family.For example, common gas-cooker more be equipped with configuration buzzer with
The buzzing alarm of drop drop is produced in gas leakage, reminds user to occur in that the situation of gas alarm.Although this has certain gas leakage
Prompting effect, but feedback effects are not directly perceived, because gas leakage, which is not normal probability, occurs event, once occurring gas leakage, use
Family does not know what meaning drop drop sound represents, and has a certain degree of maloperation event and occurs, it is impossible to provides the user with accurately
Fault message is to instruct user to make next step operational motion, or even easily by user ignores buzzing alarm.
And the adjoint age increases, middle-aged and old visual impairments, amnesia is multiple, and reagency declines, individually visual
Change or the feedback effects of simple buzzer can not meet the demand of person in middle and old age user, and need multi-angle many-side to carry out more
Multi-functional increase is reminded, quicklook is reminded, to obtain immediate response.For example, being struck sparks by rotation process coal gas rotary valve
Or Guan Huoshi, user easily ignores success of whether lighting a fire, or whether normally closes fire success, or even have ignored improper pass fire
Deng.In addition, existing kitchen range electricity is typically shown without electricity, or increases a mark for display electricity on the panel of kitchen range, it is electric
Meeting bright light when measuring low, but feedback effects are also not directly perceived, are easily ignored by user, cause battery altering not in time.In addition,
If user is when using kitchen range Baoshang, people is not beside user, and that something unexpected happened is flame-out for kitchen range, but user does not know now
Kitchen range stopped work, and the time of culinary art has been have impact on when finding.
The content of the invention
For the drawbacks described above or deficiency of prior art, the invention provides a kind of gas-cooker and its accident extinguishing detection and
Alarm, voice reminder can be sent when gas-cooker produces accident extinguishing, and the very first time is direct, easily remind user, is easy to
User controls culinary art progress in real time.
To achieve the above object, the invention provides a kind of accident extinguishing detection for gas-cooker and warning device, bag
Include：
Accident extinguishing detection means, judges whether coal gas rotary valve is in valve opening shape by valve rod rotation angle detector
State, and judge whether burner stops working by temperature-sensitive thermocouple, judging the coal gas rotary valve in valve opening state and the stove
When head is flame-out, corresponding accident extinguishing signal is generated；And
Accident extinguishing warning device, electrically connects the accident extinguishing detection means, is receiving the accident extinguishing signal
When send accident extinguishing alarm.
Preferably, the accident extinguishing detection means includes：
The valve rod rotation angle detector, detects the rotary angle position of the valve rod of the coal gas rotary valve and sends rotation
Gyration position signalling；
The temperature-sensitive thermocouple, senses the temperature of the burner and sends electromotive force signal；
Controller, obtains the rotary angle position signal and the electromotive force signal in real time, and in the anglec of rotation
Position signalling is non-zero-degree rotary angle position signal and the electromotive force signal from the high level state more than upper predetermined threshold
When being decreased below the low level state of lower predetermined threshold, the corresponding accident extinguishing signal is generated.
Preferably, the lower predetermined threshold is 1mV.
Preferably, the valve rod rotation angle detector includes potentiometer, encoder or microswitch.
Preferably, the gas-cooker includes being provided with the MCU as the controller in pulse igniter, the pulse igniter
Chip.
Preferably, the accident extinguishing detection and warning device also include WIFI reception devices, and the controller also passes through
The WIFI reception devices externally send the accident extinguishing signal.
Preferably, the accident extinguishing warning device includes speech chip, loudspeaker and accident extinguishing indicator lamp, is receiving
During to the accident extinguishing signal, the speech chip drives the loudspeaker to send accident extinguishing audio alert, the accident
Flame-out indicator lamp is opened and reveals waming color.
Preferably, the accident extinguishing indicator lamp is set to close in the accident extinguishing detection means failure.
Preferably, gas detectors are provided with the speech chip.
In addition, present invention also offers a kind of gas-cooker, including pulse igniter, at least one burner, correspondingly
The main valve of at least one branch valve for controlling the fuel gas supply of the burner and the fuel gas supply for controlling all burners, institute
Gas-cooker is stated also to detect and warning device including the above-mentioned accident extinguishing for gas-cooker.
Preferably, the gas-cooker also includes switch module, and the switch module is receiving the accident extinguishing signal
When close the pulse igniter, the main valve and the branch valve.
In the gas-cooker of the present invention, accident extinguishing detection means can judge that coal gas revolves by valve rod rotation angle detector
Whether rotary valve is in valve opening state, and judge whether burner stops working by temperature-sensitive thermocouple, and correspondence is generated when two conditions are set up
Accident extinguishing signal and accident extinguishing audio alert etc. is sent by accident extinguishing warning device.Pass through the straight of voice alarm
In vain, promptness is propagated, can allow and know accident extinguishing event even if the person in middle and old age user also very first time, reply can be so taken in time
Measure, it is to avoid the security incident such as culinary art failure or even gas leak occurs caused by reaction not in time.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute a part for specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the front view of the gas-cooker according to the preferred embodiment of the present invention；
Fig. 2 is the assembling explosive view of the gas-cooker shown in Fig. 1；
Fig. 3 is the top view of the base section of the gas-cooker shown in Fig. 2；
Fig. 4 is the stereogram of speech prompting device；
Fig. 5 is the explosive view of Fig. 4 speech prompting device；
Fig. 6 is the stereogram of indicator lamp；
Fig. 7 is the functional block diagram between each funtion part in the gas-cooker according to the preferred embodiment of the present invention, its
In illustrate signal transitive relation between each funtion part；
Fig. 8 a~Fig. 8 f show that gas leakage detection and phonetic alarm device, low battery voice are carried with specific example respectively
Wake up device, accident extinguishing detection and warning device, normal close fiery speech prompting device, anti-dry speech prompting device and igniting and lose
Lose the workflow diagram of speech prompting device；And
Fig. 9 a~Fig. 9 h illustrate MCU chip, coal gas detection circuit module, voice output circuit module, low battery successively
Prompting module, potentiometer detection circuit, thermocouple detect the circuit of circuit, dry combustion method detection circuit and jogging switches measurement circuit
Figure.
Description of reference numerals
The loudspeaker of 1 speech chip 2
The gas detectors of 3 encapsulating housing 4
5 indicator lamps
The pulse igniter of 100 battery 200
The coal gas rotary valve of 300 burner 400
The housing of 500 speech prompting device 600
The switch module of 700 glass panel 800
The temperature-sensitive thermocouple of 201 controller 301
The valve rod rotation angle detector of 302 dry-burning preventing sensor 401
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
In the present invention, in the case where not making opposite explanation, the noun of locality used is typically pin such as " upper and lower, top, bottom "
For direction shown in the drawings either for each part mutual alignment relation on vertical, vertical or gravity direction
Word is described." inside and outside " is commonly referred to as the inside and outside mutual alignment relation word for gas-cooker cavity.
With reference to shown in Fig. 1~Fig. 3, the invention provides a kind of gas-cooker, including top section and base section, top
Dividing includes glass panel 700, and base section includes each function element of housing 600 and its interior installation.It is visible referring to Fig. 3, combustion gas
Battery 100, pulse igniter 200 are provided with stove, with the igniting for the pulse ignition device for controlling burner 300, coal gas rotary valve 400
For user's rotation process to control coal gas conducting, valve opening, sparking etc. manually.
Especially, gas-cooker of the invention is integrated with including gas leakage detection and phonetic alarm device, low battery voice
Alarm set, accident extinguishing detection and warning device, the fiery speech prompting device in normal pass, anti-dry speech prompting device and igniting
At least one of failure speech prompting device.By speech prompting device 500, extra phonetic function can be achieved and reminds.Language
The intuitive that sound is reminded is strong, and acceptance is high, and user can will immediately appreciate that where produced failure, problem.To such as gas leakage,
Low battery, anti-dry etc. carry out extra voice reminder, can allow the obtaining information of user's quicklook, and handle at once instantly.Separately
Outside, for accident extinguishing, normal pass fire, loss of ignition etc., existing gas-cooker all without related prompting or is warned, but is partly used
(especially person in middle and old age user) has demand to this at family, thus the present invention can provide more multi-functional voice reminder, greatly facilitate
User uses, and may also be combined with prompting, remote prompting of indicator lamp 5 explained below etc., even if allowing user to have left gas-cooker,
Also instant messages are resulted in, emergency processing is carried out.
Specifically, gas-cooker includes controller 201 and speech prompting device 500, and referring to Fig. 5, speech prompting device includes
Speech chip 1 and loudspeaker 2, speech chip 1 are receiving function alerting signal (such as gas leakage letter that controller 201 is sent
Number) drive loudspeaker 2 to send prompting voice corresponding with function alerting signal (such as corresponding to the combustion gas of gas leakage signal afterwards
Voice is reminded in leakage, such as " drop, drop, drop, gas leakage please close valve in time ").
Gas leakage detection and phonetic alarm device, low battery speech prompting device, accident extinguishing inspection are only schematically illustrated above
Survey and warning device, normal fiery speech prompting device, anti-dry speech prompting device and the loss of ignition speech prompting device of closing are total to
Six kinds of functional devices, but the invention is not restricted to this, other more functional devices can be included.Each functional device can share control
Device 201, specific in gas-cooker structure, the MCU chip (see Fig. 9 a) in pulse igniter 200 may act as the control of each functional device
Device 201 processed.
Fig. 4 is the stereogram of speech prompting device 500, is individual packages.Referring to Fig. 5, between the upper and lower covers of encapsulating housing 3
It is packaged with speech chip 1 and loudspeaker 2, encapsulating housing 3 and is covered with power interface, and sound outlet, thermovent etc..Combustion
The bottom of housing 600 of gas kitchen can open up insertion mounting hole, and the speech prompting device 500 of individual packages is installed on insertion mounting hole
In, in the inner chamber of housing 600 for stretching into gas-cooker.Specifically, Elastic buckle can be set in the periphery wall of encapsulating housing 3, is pacified with buckle
On housing 600.Because speech prompting device 500 is independently installed and stretches into gas-cooker inner chamber, thus especially, speech chip
The probe of gas detectors 4 is also integrated with 1, in order to detect the gas concentration in gas-cooker inner chamber, i.e. detection combustion gas in real time
Leakage, will also be specifically described below.
Fig. 6 is the stereogram of indicator lamp.Indicator lamp 5 can have a variety of, such as with a pair of above-mentioned six kinds of functional devices 1
The six kinds of indicator lamps answered, such as gas leakage indicator lamp, low battery indicator lamp.Indicator lamp 5 be usually bi-colour light, for example including
Normal work color (green) and alarm color (red), on lamp socket, the bottom surface of glass panel 700 is arranged on through support
On.Connecting line and plug are stretched out in the bottom of lamp socket, to connect power supply.So, when any one functional device starts, through voice
While prompting, prompting can be synchronized by corresponding indicator lamp 5, be more convenient user.In addition, when in each function alarm set
Any one produce failure when, its corresponding indicator lamp 5 should be closed, so that user discovers.
The gas-cooker of the present invention may also include WIFI reception device (not shown), and controller 201 can be connect by WIFI
Receiving apparatus sends the wireless alarm signal corresponding with above-mentioned functions alerting signal.So, even if user is away from gas-cooker,
Related prompting message can be obtained by the application program (i.e. mobile phone A PP) of other-end (such as mobile phone), find to conciliate in time
Certainly problem.Electrically connected in addition, can also be installed on gas-cooker with controller 201 and speech prompting device 500 and external coal gas report
Alert device (not shown), when there is gas leakage in the external space (such as kitchen) of gas-cooker, gas leak detector can also pass through
Speech prompting device 500, WIFI reception devices etc. send prompting.
Below with reference to Fig. 7, Fig. 8 a~Fig. 8 e and Fig. 9 a~Fig. 9 h, above-mentioned gas leakage inspection is illustrated with specific example
Survey and phonetic alarm device, low battery speech prompting device, accident extinguishing detection and warning device, the fiery voice reminder dress in normal pass
Put, the structure composition and its course of work of anti-dry speech prompting device and loss of ignition speech prompting device.
First, gas leakage detection and phonetic alarm device
Gas leakage is detected and phonetic alarm device includes：
Gas leakage detection means, in real time monitoring reveals gas concentration and judges whether leakage gas concentration value is more than setting
Concentration value, when revealing gas concentration value more than setting gas concentration value, generates corresponding gas leakage signal；
Speech prompting device 500, electrically connects gas leakage detection means, combustion gas is sent when receiving gas leakage signal
Reveal voice reminder.
Wherein, gas leakage detection means may include：
Gas detectors 4, reveal gas concentration and according to the leakage gas concentration value of monitoring in monitoring gas-cooker in real time
The corresponding detection signal of generation is sent to gas leakage comparator；
Gas leakage comparator, detection signal is compared with baseline threshold, comparative result is sent into controller 201；
And
Controller 201, judges whether leakage gas concentration value is more than setting gas concentration value, and letting out according to comparative result
When revealing gas concentration value more than setting concentration value, gas leakage signal is generated.
Referring to Fig. 7, gas leakage detection and audio alert are related to gas detectors 4, speech prompting device and controller 201
Between communication and data processing, or even including switch module 800.
Gas detectors 4 include gas detectors 4 and probe, in the probe internally provided speech prompting device 500 in encapsulation with
Combustible gas concentration value around real-time monitoring detector, the specific example of the coal gas detection circuit module of gas detectors 4 is as schemed
Shown in 9b, it is integrated in pulse igniter 200.Coal gas detection circuit module generates correspondence according to the leakage gas concentration value of monitoring
Detection signal, such as Fig. 9 b output voltage signal A.The pulse igniter 200 for being integrated with controller 201 and comparator is received
After output voltage signal A, by output voltage signal A compared with the baseline threshold (magnitude of voltage) corresponding to setting gas concentration value
Compared with, so that judge whether leakage gas concentration value is more than setting gas concentration value according to comparative result, and in leakage gas concentration
When value is more than setting concentration value, gas leakage signal is generated, i.e., is exported wherein by Fig. 9 c voice output circuit module correspondence
A kind of voltage signal B to speech chip 1, speech chip 1 is received and recognized after voltage signal B, driving loudspeaker (raise one's voice
Device) 2, play corresponding gas leakage voice reminder.
Referring to Fig. 8 a, to avoid erroneous judgement, when detecting combustion gas, it can first judge whether combustible gas concentration changes.Work as generation
Gas concentration change when, just further monitoring gas concentration whether reach setting gas concentration value, such as 10%~20% it is quick-fried
Fried lower limit gas concentration (LEL).
As it was previously stated, gas leakage speech prompting device may also include gas leakage indicator lamp, gas leakage indicator lamp exists
Opened when receiving gas leakage signal and reveal waming color.Moreover, gas leakage indicator lamp may be configured as examining in gas leakage
Closed when surveying plant failure.
While the voice reminder of gas leakage and/or light prompting is carried out, corresponding urgent automatic place should be also carried out
Reason.As shown in fig. 7, gas-cooker includes the gas valve and switch module 800 of control fuel gas supply, the gas valve may include one by one
Accordingly control at least one branch valve of the fuel gas supply of each burner 300 and control the fuel gas supply of all burners 300
Main valve, the electrical connection gas leakage detection of switch module 800 and phonetic alarm device and for receiving gas leakage signal
When cut off all gas valves, to ensure safety.
2nd, low battery speech prompting device
For the low battery speech prompting device of gas-cooker, including：
Battery electric quantity checking device, detects battery electric quantity and low battery signal is generated in low battery in real time；And
Speech prompting device 500, electrically connects battery electric quantity checking device, low battery is sent when receiving low battery signal
Voice reminder.
Wherein, speech prompting device 500 includes speech chip 1 and loudspeaker 2, and speech chip 1 and loudspeaker 2 are arranged on envelope
Fill in housing 3, encapsulating housing 3 is independently installed in the housing 600 of gas-cooker.Battery electric quantity checking device may also include battery electricity
Amount instruction lamp, battery electric quantity indicator lamp reveals waming color when receiving low battery signal.Battery electric quantity indicator lamp is also configured to
Failure color is shown in battery electric quantity checking device failure.
Wherein, battery electric quantity checking device may include：
Battery voltage detection circuit, detects that the magnitude of voltage at the two ends of battery 100 concurrently send voltage value signal to battery electricity in real time
Measure comparator；
Battery electric quantity comparator, receives the voltage value signal of detection and compared with setting voltage threshold, by comparative result
Send controller 201；
Controller 201, judges whether battery 100 is in low battery state, and judging at battery 100 according to comparative result
Low battery signal is generated when low battery state.
Referring to Fig. 7, low battery speech prompting device is related to battery 100 including the voice of speech chip 1 and loudspeaker 2 is carried
The communication and data processing waken up between device and controller 201.
Specifically, with reference to Fig. 8 b, pulse igniter 200 is electrically connected with battery 100, and MCU is integrated with pulse igniter 200
Chip and the low battery prompting module including battery voltage detection circuit, can gather battery in real time by battery voltage detection circuit
The magnitude of voltage at 100 two ends and by independent comparator or the comparison circuit being integrated in controller compared with setting voltage threshold
Compared with.Setting voltage threshold is, for example, 0.7 times of the load voltage value of battery 100, during less than setting voltage threshold, is considered as low electricity
Amount.
Now, the generation of controller 201 low battery signal, is exported by the amplifier of the low battery prompting module shown in Fig. 9 d
Corresponding voltage signal C, lights corresponding low battery indicator lamp.Meanwhile, pass through a kind of Fig. 9 c circuits correspondence output electricity therein
Press signal B1 (corresponding to low battery signal) to speech chip 1, speech chip 1 is received and recognized after voltage signal B1, and driving is expanded
Sound device (i.e. loudspeaker) 2, plays corresponding low battery voice reminder.
Similarly, low battery speech prompting device can also externally send low battery signal by WIFI reception devices.
3rd, accident extinguishing detection and warning device
Accident extinguishing detection and warning device, including：
Accident extinguishing detection means, passes through valve rod rotation angle detector 401 (such as potentiometer, encoder or microswitch
Deng) judge whether coal gas rotary valve 400 is in valve opening state, and judge whether burner 300 stops working by temperature-sensitive thermocouple 301,
When judgement coal gas rotary valve 400 is in valve opening state and burner 300 stops working, corresponding accident extinguishing signal is generated；And
Accident extinguishing warning device, electrically connects accident extinguishing detection means, meaning is sent when receiving accident extinguishing signal
Outer flame-out alarm.
Wherein, accident extinguishing detection means includes：
Valve rod rotation angle detector 401, the rotary angle position of the valve rod of detection coal gas rotary valve 400 simultaneously sends rotation
Angle position signal；
Temperature-sensitive thermocouple 301, senses the temperature of burner 300 and sends electromotive force signal；
Controller 201, obtains rotary angle position signal and electromotive force signal, and be in rotary angle position signal in real time
Non-zero-degree rotary angle position signal and electromotive force signal are decreased below lower pre- from the high level state more than upper predetermined threshold
When determining the low level state of threshold value, corresponding accident extinguishing signal is generated.
Referring to Fig. 7, accident extinguishing detection and warning device are related to valve rod rotation angle detector 401, temperature-sensitive thermocouple
301st, including communication and data processing between the speech prompting device and controller 201 of speech chip 1 and loudspeaker 2, very
To being related to switch module 800.
Generally, lower predetermined threshold is set as 1mV.Valve rod rotation angle detector 401 in present embodiment uses current potential
Device, therefore pulse igniter 200 is popped one's head in and be integrated in the potentiometer that valve rod rotation angle detector 401 includes being arranged at valve rod
In potentiometer detection circuit.
Understood with reference to Fig. 8 c, detect that circuit can obtain rotary angle position by the specific potentiometer shown in Fig. 9 e, send out
Go out rotary angle position signal (being converted to corresponding voltage signal D1) to export to controller.Likewise, temperature-sensitive thermocouple 301 is wrapped
The thermocouple detection circuit for including the thermocouple probe being arranged at burner 300 and being integrated in pulse igniter 200.Pass through Fig. 9 f
Shown specific thermocouple detection circuit can sense the temperature of burner 300 and send electromotive force signal (i.e. corresponding voltage letter
Number E).
Controller 201 obtains above-mentioned rotary angle position signal and electromotive force signal in real time, in rotary angle position signal
During for non-zero-degree rotary angle position signal, it is valve opening state to show coal gas rotary valve 400, in electromotive force signal from pre- more than upper
When the high level state for determining threshold value (such as 2mV) is decreased below the low level state of lower predetermined threshold, show that burner stops working, this
When the corresponding accident extinguishing signal of controller control generation, i.e., give voice core by the corresponding voltage signal B2 of Fig. 9 b circuit outputs
Piece 1, speech chip 1 is received and recognized after voltage signal B2, and driving loudspeaker 2 plays corresponding accident extinguishing voice reminder.
Similarly, accident extinguishing detection and warning device may also include WIFI reception devices, and unexpected put out externally is sent by it
Fiery signal, can be transmitted in such as mobile phone A PP, with remote monitoring.When receiving accident extinguishing signal, not only speech chip 1
Driving loudspeaker 2 sends accident extinguishing audio alert, and accident extinguishing indicator lamp is also opened and reveals waming color.Accident extinguishing is indicated
Lamp is also configured as closing in unexpected extinguishing detecting device failure.
, it is necessary to valve body after occurring accident extinguishing.As shown in fig. 7, switch module 800 is receiving accident extinguishing letter
Number when can close pulse igniter 200, main valve and branch valve etc., to prevent more gas leakages, it is to avoid generation is ignited blast
Deng.
4th, it is normal to close fiery speech prompting device
The normal fiery speech prompting device in pass, including：It is normal to close fire detection device, pass through valve rod rotation angle detector 401
Judge that coal gas rotary valve 400, whether in closing valve trend state and whether closing valve in place, is in judgement coal gas rotary valve 400
When closing valve trend state and closing valve in place, the corresponding fiery signal in normal pass is generated；And
Speech prompting device 500, electrical connection is normal to close fire detection device, sends normal when receiving and normally closing fiery signal
Close fiery voice reminder.
Wherein, the normal fire speech prompting device that closes may also include the fiery indicator lamp in normal pass, and the normal fiery indicator lamp in pass is in reception
Opened during signal fiery to normal pass and reveal normal work color.The normal fire indicator lamp that closes can be further arranged to close fire inspection normal
Warning color is switched to when surveying plant failure.
Wherein, normal fire detection device of closing may include：
Valve rod rotation angle detector 401 (such as potentiometer), the rotary angle position of the valve rod of detection coal gas rotary valve 400
And at least send the second rotary angle position signal behind the first rotary angle position signal of original state, setting time interval
And trigger signal in place is closed in triggering in zero degree rotary angle position；
Controller 201, becomes according to the change of the first rotary angle position signal to the second rotary angle position signal
Whether gesture judges coal gas rotary valve 400 in pass valve trend state, and is judging in pass valve trend state and receiving
When closing trigger signal in place, generation is normal to close fiery signal.
Referring to Fig. 7, the normal fire speech prompting device that closes only relates to valve rod rotation angle detector 401 with including speech chip
Communication and data processing between 1 and the speech prompting device and controller 201 of loudspeaker 2.
It is preferred that, setting time is at intervals of 0.1s~0.5s.One in front and one in back two valve rod rotary angle positions are obtained, can be sentenced
Disconnected whether be in closes valve trend state.Understood with reference to Fig. 8 d, for example, detect that circuit can by the specific potentiometer shown in Fig. 9 e
The first rotary angle position of previous moment and the second rotary angle position of later moment in time are obtained, the corresponding anglec of rotation is sent
Position signalling (i.e. corresponding voltage signal D2 and D3) gives controller.By first rotary angle position for representing previous moment
Voltage signal D2 would know that whether coal gas rotary valve 400 is in valve opening state, that is, whether judge the first rotary angle position is non-
Zero degree rotary angle position.Whether trend and trend are changed by voltage signal D2 to D3, be can determine that no in pass valve trend
State.For example, zero degree rotary angle position is close valve state, the second rotary angle position representated by voltage signal D3 is less than electricity
When pressing the first rotary angle position representated by signal D2, it can determine that to close valve trend state.
This judgement can be realized by single comparator, for example can be by judging former and later two voltage signals D2's and D3
Size, so as to judge no in pass valve trend state.Certainly, the logic circuit of the judgement of above-mentioned pass valve trend can be also integrated in
In controller.This is known to the skilled person technology, not described in detail herein.When in pass valve trend, controller is lasting
Trigger signal in place is closed in collection, and trigger signal in place is closed collecting (i.e. Fig. 9 e circuits send corresponding voltage signal D5)
When, show that coal gas rotary valve 400 is closed in place, the corresponding normal fiery signal in pass of now controller generation passes through Fig. 9 b circuits
Corresponding voltage signal B3 is exported to speech chip 1, speech chip 1 is received and recognized after voltage signal B3, driving loudspeaker 2 is broadcast
Put the corresponding fiery voice reminder in normal pass.
Especially, to prevent false triggering erroneous judgement etc., normal pass fire detection device of the invention is also configured to set
Triggering begins to shut off trigger signal when determining rotary angle position (i.e. Fig. 9 e circuits send corresponding voltage signal D4)；Setting rotation
Angle position is, for example, 20 ° of rotary angle positions, and now coal gas rotary valve 400 is begun to shut off, and has substantially shut off the combustion of burner 300
Gas is supplied.Therefore, controller 201 be additionally configured to judge in close valve trend state and continuously receive begin to shut off it is tactile
When signaling and closing trigger signal in place, generation is normal to close fiery signal.
Likewise, the normal fire speech prompting device that closes also can externally send the fiery signal in normal pass by WIFI reception devices.
5th, anti-dry speech prompting device
Anti-dry speech prompting device includes：
Anti-dry detection means, detects cooking bottom temperature and when judging that cooking bottom temperature reaches dry combustion method temperature, generation pair in real time
The dry combustion method signal answered；And
Speech prompting device 500, electrically connects anti-dry detection means, and sending dry combustion method voice when receiving dry combustion method signal carries
Wake up.
Wherein, speech prompting device 500 includes speech chip 1 and loudspeaker 2, and speech chip 1 and loudspeaker 2 are arranged on envelope
Fill in housing 3, encapsulating housing 3 is independently installed in the housing 600 of gas-cooker.When receiving dry combustion method signal, speech chip 1 drives
Dynamic loudspeaker 2 sends dry combustion method voice reminder.In addition, anti-dry speech prompting device may also include dry combustion method indicator lamp, dry combustion method is indicated
Lamp is opened when receiving dry combustion method signal and reveals waming color, is reminded with more multimode.Dry combustion method indicator lamp may be configured as
Closed during anti-dry detection means failure.
Wherein, anti-dry detection means further comprises：
Dry-burning preventing sensor 302, is arranged on the burner 300 of gas-cooker to detect cooking bottom temperature in real time, and send the bottom of a pan temperature
Degree detection signal；
Controller 201, receives the cooking bottom temperature detection signal, and detect that signal judges correspondence according to the cooking bottom temperature
The cooking bottom temperature whether reach the dry combustion method temperature of dry-fire condition, and generate when reaching the dry-fire condition dry combustion method signal.
With reference to Fig. 8 e, detect the temperature in the bottom of a pan in real time by dry-burning preventing sensor 302 and send cooking bottom temperature and detect signal.
Dry-burning preventing sensor 302 includes the dry combustion method inspection for being arranged on the sensor probe of burner 300 and being integrated in pulse igniter 200
Slowdown monitoring circuit.
Referring to Fig. 7, anti-dry speech prompting device is related to dry-burning preventing sensor 302 with including speech chip 1 and loudspeaker 2
Speech prompting device and controller 201 between communication and data processing.
Specifically, cooking bottom temperature change causes the temperature change of sensor probe, the change in resistance of sensor probe, dry combustion method
Detection circuit gathers the resistance of sensor probe in real time, by sensor RT characteristics, eventually through specific dry shown in Fig. 9 g
Burn detection circuit conversion and export corresponding voltage signal F (correspondence cooking bottom temperature detection signal) to the MCU in pulse igniter 200
Chip.MCU chip continuous collecting voltage signal F, until signal value reaches dry combustion method temperature (such as 290 degrees Celsius) according to RT characteristics
Corresponding dry combustion method voltage signal values, are considered as dry combustion method establishment.Now, MCU chip generates corresponding dry combustion method signal, and dry combustion method signal can
Including signal G, with positive closing gas valve, further dry combustion method is prevented, further includes and is believed by the corresponding voltage of Fig. 9 b circuit outputs
Number B4 is to speech chip 1, and speech chip 1 is received and recognized after voltage signal B4, and driving loudspeaker 2 plays corresponding dry combustion method voice
Remind.
Likewise, anti-dry speech prompting device also can externally send dry combustion method signal by WIFI reception devices, to transmit
To remote terminal, such as mobile phone A PP.
6th, loss of ignition speech prompting device
For the loss of ignition speech prompting device of gas-cooker, including：
Detector for ignition, judges whether igniting starts in ignition process, and judges burner by temperature-sensitive thermocouple 301
300 whether firing up, during 300 not firing up of burner, generate loss of ignition signal judging igniting to start；
Speech prompting device 500, electrically connects detector for ignition, loss of ignition is sent when receiving loss of ignition signal
Voice reminder.
Wherein, speech prompting device 500 includes speech chip 1 and loudspeaker 2, and speech chip 1 and loudspeaker 2 are arranged on envelope
Fill in housing 3, encapsulating housing 3 is independently installed in the housing 600 of gas-cooker.When receiving loss of ignition signal, voice core
The driving loudspeaker 2 of piece 1 sends loss of ignition voice reminder.Loss of ignition detection means may also include ignition light, and igniting refers to
Show that lamp is opened when receiving loss of ignition signal and reveals waming color.Ignition light may also be configured in detector for ignition
Closed during failure.
Wherein, detector for ignition may include：
The current value of battery current detection circuit, in real time detection battery 100 two ends；
Temperature-sensitive thermocouple 301, senses the temperature of burner 300 and sends electromotive force signal；And
Controller 201, is configured to：
The current value of detection is received, whether is fallen into setting initial firing current interval and judged according to the current value of detection
Whether igniting starts；
Electromotive force signal is obtained in real time, and in electromotive force not from the low level shape less than lower predetermined threshold (such as 1mV)
When state rises to the high level state more than upper predetermined threshold (such as 2mV), the not firing up of burner 300 is judged；
The loss of ignition signal is generated when judging igniting startup and 300 not firing up of burner.
Referring to Fig. 7, loss of ignition speech prompting device is related to battery 100, temperature-sensitive thermocouple 301 with including speech chip 1
Communication and data processing between the speech prompting device and controller 201 of loudspeaker 2.
Wherein, when pressing and twisting the preparation igniting of coal gas rotary valve 400, it need to judge whether igniting really starts.Referring to figure
8f, it is the initial firing current for gathering the two ends of battery 100 by the way of.During pulse firing, initial firing current is larger, usually 80mA
~120mA is interval, therefore setting initial firing current interval is preferably 80mA~120mA.The initial firing current of collection falls into this interval, then
It is considered as igniting to start.This judgement can be realized by independent comparators or the comparison circuit being integrated in controller etc., for example
The current value detected received is compared with the upper threshold value and lower threshold value in setting initial firing current interval respectively, to judge to be
It is no to fall into setting initial firing current interval.The circuit structure and its logic element of this comparator or comparison circuit are ability
It is not described in detail herein known to field technique personnel.
Selectively, microswitch is touched when can also press by coal gas rotary valve 400 to obtain trigger signal, decision-point
Fire starts, and now microswitch triggers igniting enabling signal when coal gas rotary valve 400 is pressed, i.e., by specific shown in Fig. 9 h
The jogging switches measurement circuit of example obtains signal H.Now controller 201 judges that igniting starts according to igniting enabling signal；
Temperature-sensitive thermocouple 301 includes being arranged on the thermocouple probe at burner 300 and is integrated in pulse igniter 200
Thermocouple detects circuit.Equally, obtain electromotive force signal in real time, i.e., by the specific thermocouple shown in Fig. 9 f detect circuit come
Sense the temperature of burner 300 and send electromotive force signal (i.e. corresponding voltage signal E), and in electromotive force not from pre- less than lower
When the low level state for determining threshold value rises to the high level state more than upper predetermined threshold, the not firing up of burner 300 is judged；
Loss of ignition signal is generated when judging igniting startup and 300 not firing up of burner.
Likewise, loss of ignition speech prompting device also can externally send loss of ignition signal by WIFI reception devices,
To be sent to remote terminal, such as mobile phone A PP so that the user away from gas-cooker can also obtain the real-time monitoring letter to gas-cooker
Breath.Further, transmitting-receiving medium can be also used as by WIFI reception devices, pulse igniter is manipulated by remote terminal
200, and then remote control gas-cooker, especially carry out safety and close valve operation or send various alarm signals.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, and these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (11)
1. a kind of accident extinguishing detection and warning device for gas-cooker, it is characterised in that described device includes：
Accident extinguishing detection means, judges whether coal gas rotary valve (400) is in by valve rod rotation angle detector (401) and opens
Valve state, and judge whether burner (300) stops working by temperature-sensitive thermocouple (301), judging coal gas rotary valve (400) place
When valve opening state and the flame-out burner (300), corresponding accident extinguishing signal is generated；And
Accident extinguishing warning device, electrically connects the accident extinguishing detection means, is sent out when receiving the accident extinguishing signal
The flame-out alarm of accidents happened to.
2. the accident extinguishing detection and warning device according to claim 1 for gas-cooker, it is characterised in that the meaning
Outer extinguishing detecting device includes：
The valve rod rotation angle detector (401), detects the rotary angle position of valve rod of the coal gas rotary valve (400) simultaneously
Send rotary angle position signal；
The temperature-sensitive thermocouple (301), senses the temperature of the burner (300) and sends electromotive force signal；
Controller (201), obtains the rotary angle position signal and the electromotive force signal in real time, and in the anglec of rotation
Position signalling is non-zero-degree rotary angle position signal and the electromotive force signal from the high level state more than upper predetermined threshold
When being decreased below the low level state of lower predetermined threshold, the corresponding accident extinguishing signal is generated.
3. the accident extinguishing detection and warning device according to claim 2 for gas-cooker, it is characterised in that under described
Predetermined threshold is 1mV.
4. the accident extinguishing detection and warning device according to claim 2 for gas-cooker, it is characterised in that the valve
Bar rotation angle detector (401) includes potentiometer, encoder or microswitch.
5. the accident extinguishing detection and warning device according to claim 2 for gas-cooker, it is characterised in that the combustion
Gas kitchen includes being provided with the MCU chip as the controller (201) in pulse igniter (200), the pulse igniter (200).
6. the accident extinguishing detection and warning device according to claim 2 for gas-cooker, it is characterised in that the meaning
Outer misfire detection and warning device also include WIFI reception devices, and the controller (201) also passes through the WIFI reception devices
Externally send the accident extinguishing signal.
7. the accident extinguishing for gas-cooker according to any one in claim 1~6 detects and warning device that it is special
Levy and be, the accident extinguishing warning device includes speech chip (1), loudspeaker (2) and accident extinguishing indicator lamp, is receiving
During the accident extinguishing signal, the speech chip (1) drives the loudspeaker (2) to send accident extinguishing audio alert, described
Accident extinguishing indicator lamp is opened and reveals waming color.
8. the accident extinguishing detection and warning device according to claim 7 for gas-cooker, it is characterised in that the meaning
Flame-out indicator lamp is set to close in the accident extinguishing detection means failure outside.
9. the accident extinguishing detection and warning device according to claim 7 for gas-cooker, it is characterised in that institute's predicate
Gas detectors (4) are provided with sound chip (1).
10. a kind of gas-cooker, including pulse igniter (200), at least one burner (300), the stove is controlled correspondingly
The main valve of at least one branch valve of the fuel gas supply of head (300) and the fuel gas supply of all burners (300) of control, its
It is characterised by, the gas-cooker also includes the accident extinguishing for gas-cooker according to any one in claim 1~9
Detection and warning device.
11. gas-cooker according to claim 10, it is characterised in that the gas-cooker also includes switch module (800), institute
State switch module (800) and the pulse igniter (200), the main valve and institute are closed when receiving the accident extinguishing signal
State branch valve.
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|---|---|---|---|
| CN201710278045.9A CN106979539A (en) | 2017-04-25 | 2017-04-25 | Gas-cooker and its accident extinguishing detection and warning device |
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| CN110906379A (en) * | 2019-11-22 | 2020-03-24 | 天钺电子(东莞)有限公司 | Automatic closing and counting system for gas stove |
| CN112255932A (en) * | 2019-07-22 | 2021-01-22 | 青岛海尔智慧厨房电器有限公司 | Control method of integrated cooker and integrated cooker |
| CN113432155A (en) * | 2021-06-25 | 2021-09-24 | 广东超人节能厨卫电器有限公司 | Firepower aperture display device and firepower aperture display method |
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