CN102767850A - Intelligent safety control device for household gas cooker - Google Patents
Intelligent safety control device for household gas cooker Download PDFInfo
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- CN102767850A CN102767850A CN2012102864837A CN201210286483A CN102767850A CN 102767850 A CN102767850 A CN 102767850A CN 2012102864837 A CN2012102864837 A CN 2012102864837A CN 201210286483 A CN201210286483 A CN 201210286483A CN 102767850 A CN102767850 A CN 102767850A
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Abstract
The invention relates to an intelligent safety control device for a household gas cooker. The intelligent safety control device comprises a digital control circuit and a control valve assembly. The control circuit is composed of a human body infrared induction module, a touch induction key circuit, a digital display and circuit, a voltage stabilizing circuit, a flame detection circuit, a motor driving circuit, an alarm circuit and a central processing unit (CPU) control circuit unit. Power is supplied to the digital control circuit through a battery pack. The control valve assembly is composed of a micro direct current deceleration motor, a gear assembly, a microswitch and a manual control valve body. The control valve assembly can serve as an executing mechanism controlled through a CPU as well as reserving a function of an existing gas cooker, and returning to an original zero position is achieved after instructions are finished and an air valve is closed. The intelligent safety control device is simple in structure and practical, intelligent control and electromechanical control are introduced, the shortcoming that the existing gas cooker cannot automatically close a fire is overcome, safety supportability for gas cooker use in kitchen operation is greatly improved, and fires caused by dry burning of a pot or gas leakage are avoided to the largest extent.
Description
Technical field
The present invention relates to a kind of gas-cooker safety control, particularly a kind of family gas-cooker intelligent and safe control device.
Background technology
At present, digitlization has got in the kitchen of vast family, like micro-wave oven, electromagnetic oven, numerical control pressure cooker etc.; But it should be noted that these apparatus all are as the energy with electric power; And another most economical, the most universal main energy sources " combustion gas " is a big vacancy in the application aspect the digitlization in numerous citizen kitchen, the few and function singleness of Related product.Though present most of gas-cooker all has electronic striking and automatic ignition device, manual mode is also being continued to use in main switch fire and time control.And to the people of modern fast pace life, work is main rhythm with amusement, can not be on duty before kitchen range, thereby pot, burnt pot phenomenon in use usually appear dryouting in gas-cooker, even can cause fire; Especially as the solitary family of middle old man, or owner is in and is engaged in writing, scientific research, is busy with business etc., and safety problem appears in the use of combustion gas more easily, and key is because the use of real family gas-cooker can not look like other electrical equipment pattern and be prone to realize intelligent control; Existing gas-cooker is the utensil that the most universal a kind of, most convenient, the most suitable Chinese cook custom, so the upgrading of gas-cooker, intelligentized raising are anxious to be solved.
Therefore, provide a kind of simple in structure, reasonable in design, performance is safe and reliable, the significant family of practical function gas-cooker intelligent and safe control device, becomes one of this those skilled in the art problem anxious to be addressed.
Summary of the invention
The object of the invention in solve existing family gas-cooker can not set time-delay close fire automatically, can not be identified in close stove fire under the various unsafe conditions automatically, do not have the Intelligent Recognition function, defective that left and right sides fire door can not independently be controlled automatically; Providing a kind of has identification and has or not before the kitchen range operator to judge whether to close automatically functions such as fiery function and warning, effectively to improve family's gas-cooker intelligent and safe control device of gas-cooker protection safe in utilization in the kitchen operation.
For realizing that the technical scheme that above-mentioned purpose the present invention is adopted is: a kind of family gas-cooker intelligent and safe control device is characterized in that this device comprises digital control circuit part and control valve assembly;
Said digital control circuit is by forming with lower unit: human body infrared induction module, touch sensible key circuit, nixie display and circuit, mu balanced circuit, flame detecting circuit, motor-drive circuit, warning circuit, cpu control circuit; Said cpu control circuit adopts single-chip microcomputer IC1, and said digital control circuit adopts battery-powered;
This device is that left and right sides fire door is independently controlled; Said control valve assembly is on the gas stove switch valve body, to add micro machine and mechanical driving part; Be a kind of new Electromechanical Control valve with electronic and manual combination, it also can accomplish fire instruction pass, the pass gas check valve that CPU sends except that can manually controlling.
Said human body infrared induction module is made up of human body infrared induction module MR, delay control switch K1; Human body infrared induction module MR is detected by the pyroelectricity human infrared sensor and converts signal of telecommunication output a behind internal amplifier, comparator, delay circuit after human body infrared into and keep electronegative potential; When sensor detects when human body infrared; Through time-delay output a, convert high potential into and be input to IC1 the 16th foot control system pass fire; Said delay control switch K1 is provided with two grades of time-delay 3 minutes and 5 minutes respectively.
Said touch sensible key circuit is by touch sensible button chip IC 2, IC3, LED 1, LED2, and capacitor C 8, C9, C10 and two induction pole plate SM1, SM2 form; Promptly form change direct-to-ground capacitance and electrical quantity when pressing the panel touch key-press with induction electrode; Output 1 pin becomes pulse of high potential output by electronegative potential after touch sensible button chip IC 2 or IC3 processing; Send into IC1 the 19th, 20 pin through resistance R 15, R16; 19,20 pin are controlled charactron position or ten respectively and are added one, and induction pole plate SM2, SM1 control a position, ten respectively, LED 1, LED2 be respectively ten with a position key position indicator lamp.
Said nixie display and circuit are by LED nixie display U1, switching tube VT1, VT2, and resistance R 10, R11, R12, R13, R17 form; IC1 the 3rd～10 pin is the drive output of digital section; Be connected to each section of nixie display through current-limiting resistance R17; It is luminous that IC1 the 11st and 14 pin make nixie display take turns ten of display digit controls and individual position through resistance R 13, R12 gauge tap pipe VT1, VT2, and CPU sent and closes the fire instruction when nixie display countdown finished.
Said mu balanced circuit adopts the small-sized mu balanced circuit of DC-DC, manages VT7, Zener diode D2 by adjustment in the said mu balanced circuit, filter capacitor C3, C5, C6, and dropping resistor R7 has formed series voltage regulator; Cell voltage 9V receives IC1 the 17th pin through resistance R 3, and CPU inside is provided with the voltage identification circuit and drops to 5V when following when cell voltage, and CPU sends instruction buzzer warning notice and changes battery.
Said flame detecting circuit is by thermocouple RT, multiple tube VT4, VT5, and resistance R 8, resistance R 9, resistance R 14, capacitor C 7 is formed; Said capacitor C 7, resistance R 8 are the delay time control element; Said thermocouple RT at high temperature produces voltage and inputs to the VT4 base stage, the multiple tube conducting that VT4, VT5 are formed, and collector voltage descends rapidly, receives IC1 the 21st pin through resistance R 4; IC1 the 21st pin is an electronegative potential during operate as normal; If accident extinguishing VT4 base voltage descends rapidly, multiple tube VT4, VT5 end, and VT4, the VT5 collector voltage raises rapidly but collector capacitance C7 voltage can not be suddenlyd change, and through time-delay in 10 seconds, IC1 the 21st pin became high potential, and CPU will send and close the fire instruction.
Said motor-drive circuit is made up of relay K 2, triode VT6, resistance R 6; CPU closes the fire instruction and gets into triode VT6 base stage by the output of 18 pin through resistance R 6; Make triode VT6 conducting drive relay K 2 adhesives; After relay K 2 adhesives 5V voltage directly is added to micro machine, makes micro machine rotation driven gear group and valve body main shaft get back to zero-bit and close stove fire.
Said warning circuit is made up of triode VT3, buzzer BZ, resistance R 5; After the different alarm that IC1 the 22nd human hair combing waste goes out, receive triode VT3 base stage through resistance R 5 and send alarm sound through amplifying rear drive buzzer BZ.
Said cpu control circuit adopts single-chip microcomputer IC1, and its model is P87LPC764, and its each pin connects as follows: the external divider resistance R1 of IC1 the 1st pin, R2 input analog voltage; IC1 the 2nd pin is clock oscillator external capacitor C4; The 3rd～10 pin is the drive output of each section of nixie display numeral, and the luminous of seven strokes of numerals formed in control; IC1 the 11st, 14 bipods are dynamically to show the switching signal output, make charactron take turns display digit through two switching tubes of resistance R 13, R12 control; IC1 the 12nd and 13 pin earth terminal and feeder ears; IC1 the 16th pin is human-induced signal's input; IC1 the 18th pin is to close the moving signal output part of fireflood; IC1 the 19th, 20 pin are inputs of ten on induced key switch and individual position driving display; IC1 the 21st pin connecting resistance R4 is a flame detecting security control input; IC1 the 22nd pin connecting resistance R5 is an alarm signal output ends; IC1 the 23rd, 24 pin are external concussion element X1, capacitor C 1, C2 of CPU need of work.
Micro machine that said control valve assembly inside is provided with and mechanical driving part are by DC speed-reducing (micro machine); The valve body main shaft; Cone pinion; Gear bush; Spur gear; Generator shaft gear; Igniting ground connection dish; Ground connection dish spring; The ignition switch connecting ring; Large bevel gear; Keyway; The main shaft key pin; Back-moving spring; Rotary spool; Power supply control microswitch; Zero-location control microswitch dial; The valve body escape pipe; The combustion gas input interface; The umbrella gear box loam cake; The bevel gear casing; Casing microswitch frame; Bevel gear casing bottom; Valve base and box flange connect to form; During said valve body main shaft manual manipulation; When the valve body main shaft is pressed downwards and is rotated; Drive that igniting ground connection dish is descending, rotary spool and zero-location control dial arm and rotate counterclockwise; This moment, combustion gas and control microswitch connecting power are lighted a fire, opened to ignition switch connecting ring ground connection, and hand-screw rotary valve body main shaft is regulated the firepower size, and the reverse rotation main shaft cuts out stove fire; When said valve body spindle machine is controlled; DC speed-reducing is installed on the gear housing flange and links to each other with generator shaft gear, generator shaft gear and spur gear engagement, and the straight-tooth wheel shaft is connected with cone pinion through gear bush; Cone pinion meshes with large bevel gear again; Valve body main shaft sliding fit is with it passed at the large bevel gear center, studs with the main shaft key pin on the valve body main shaft, embeds when the main shaft key pin is normal in the keyway of the large bevel gear back side; Must press the valve body main axis rotation owing to manually open fire; Back main shaft key pin has withdrawed from keyway and has had a certain degree (looking adjustment fire size) with key-way so open fire; Drive meshed gears and rotate when DC speed-reducing gets electric rotation, drive large bevel gear at last and rotate in a clockwise direction, when turn to keyway when parallel with the main shaft key pin effect lower main axis key pin at back-moving spring embed again in the keyway of the large bevel gear back side; The valve body main shaft is driven down by large bevel gear and also clockwise rotates; The valve body main shaft drives spool and the zero-location control microswitch is dialled the arm rotation, closes combustion gas, power cutoff up to zero-bit, accomplishes and closes stove fire automatically.
Said this device control left and right sides fire door is independently controlled; Do not disturb mutually during the work of two fire doors, timing controlled has partly adopted the LED charactron to show, and directly with the control circuit element with designing on a bar printing plate; Be fixed on control valve assembly next door below the gas-cooker panel, simple, intuitive.
The invention has the beneficial effects as follows: this family's gas-cooker intelligent and safe control device is on the basis of existing gas-cooker structure, to upgrade, and has both kept original simple structure, practicality, has introduced digital control again and mechanical transmissioning technology; Remedy existing capability and can not close fiery potential safety hazard automatically.This device main application is to change existing gas-cooker to lean on manual old model entirely, makes gas-cooker reach semi-automatic control through single-chip microcomputer, motor, mechanical adding; Like human body recognition function, flame identification function, preset time delay function, automatically close fiery function, force to close fiery function; Effectively stop to dryout the danger of pot and gas leakage; Avoid causing the possibility of fire to greatest extent, can effectively reduce the annual accident rate of family's gas-cooker; Control handle is got back to zero-bit after really having realized closing stove fire, to guarantee to close reset condition before gas-cooker recovers to use behind the stove fire, to have realized that the pass fire does not increase " electrically-controlled valve " in addition and realized that left and right sides fire door independently controls.Timing controlled has partly adopted the LED charactron to show, directly with the control circuit element with being located on the bar printing plate, be fixed on control valve assembly next door below the gas-cooker panel, simple, intuitive, the convenient adjustment; Reach energy-conservation, convenient, safe effect simultaneously.
In a word, the present invention is simple in structure reasonable in design, because direct current supply is safe and reliable, working service is convenient and energy-saving and cost-reducing, has effectively improved the security of gas-cooker between the operating period, and obvious application effect is the regeneration product of existing family gas-cooker.
Description of drawings
Fig. 1 is a gas-cooker intelligent and safe control device functional-block diagram of the present invention;
Fig. 2 is a digital control circuit schematic diagram of the present invention;
Fig. 3 is a control valve assembly internal structure sketch map of the present invention;
Fig. 4 is a control valve assembly external structure sketch map of the present invention;
Among the figure: 1 valve body main shaft, 2 cone pinions, 3 gear bush, 4 spur gears, 5 generator shaft gears; 6 DC speed-reducing, 7 ignition switch ground connection dish, 8 ground connection dish spring, 9 igniting connecting rings, 10 large bevel gears; 11 keyways, 12 main shaft key pins, 13 back-moving springs, 14 (control of zero-bit power supply) microswitch, 15 rotary spools; Arm, 17 valve body escape pipes, 18 combustion gas input interfaces, 19 gear-box loam cakes, 20 gear housings are dialled in 16 (controls of zero-bit power supply); 21 casing microswitch framves, 22 gear housing bottoms, 23 valve bases, 24 box flanges.
Fig. 5 is a gas-cooker panel construction sketch map of the present invention;
Among the figure: 1-1 gas-cooker panel, 1-2 kitchen range, 1-3 knob, 1-4 display screen.
Control circuit schematic diagram element detail list:
The specific embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to according to the specific embodiment provided by the invention, structure, details are as follows for characteristic:
Like Fig. 1, shown in Figure 2, a kind of family gas-cooker intelligent and safe control device, this device comprise digital control circuit part and control valve assembly part.
Said digital control circuit is made up of following element circuit: digital display and circuit, human body infrared induction module, touch sensible key circuit, mu balanced circuit, flame detecting circuit, motor-drive circuit, warning circuit and cpu control circuit, digital control circuit is battery-powered.
(1) human body infrared induction circuit
Form by human body infrared induction module MR, delay control switch K1; Human body infrared induction module MR is detected by the pyroelectricity human infrared sensor and converts signal of telecommunication output a behind internal amplifier, comparator, delay circuit after human body infrared into and keep electronegative potential; When sensor detects when human body infrared; Output a becomes high potential and is input to IC1 the 16th pin through R4 after time-delay; CPU receives that signal has two kinds of possibilities after treatment: 1. send instruction to drive circuit and close stove fire, 2. before CPU received signal, the stove fire delayer was set; The countdown human body infrared induction module MR output this moment high potential of working is also inoperative, because it will make way for " countdown " function; In order before the operator leaves kitchen range the short time, not close stove fire, be provided with the K1 delay switch, 1 connection, 3 minutes, 2 connections of can delaying time can be delayed time 5 minutes; Before the operator gets back to kitchen range again in time-delay; Induction module MR detects human body infrared again, and time-delay is interrupted, and output a continues to keep electronegative potential; No control signal is to CPU, and stove fire works on.
(2) touch sensible key control circuit
Because the environment that gas-cooker uses is abominable, the necessary waterproof, antifouling of gas-cooker panel is so button adopts touch-induction-type the safest, reliable; The touch sensible key control circuit is made up of IC2, IC3, LED1, LED2, C8, C9, C10 and two induction pole plates or spring-like induction electrode SM1 and SM2; IC2, IC3 are touch sensible button application-specific integrated circuits; When finger has changed direct-to-ground capacitance by to panel touch key-press position and induction electrode formation minimum distance the time and electrical quantity is handled through IC; Output 1 pin becomes pulse of high potential output by electronegative potential; Send into IC1 the 19th, 20 pin through R15, R16 and control a position, 10-bit digit Guan Jiayi respectively, countdown is simultaneously started working, ten of a SM2 control position, SM1 controls; LED1, LED2 are light emitting diodes, are ten and a position key position indicator lamp.
(3) digital display and circuit
Said nixie display and circuit are by LED nixie display U1, switching tube VT1, VT2, and resistance R 10, R11, R12, R13, R17 form; IC1 the 3rd～10 pin is the drive output of digital section; Be connected to each section of nixie display through current-limiting resistance R17; It is luminous that IC1 the 11st and 14 pin make nixie display take turns ten of display digit controls and individual position through resistance R 13, R12 gauge tap pipe VT1, VT2, and CPU sent and closes the fire instruction when nixie display countdown finished.
Because power consumption was bigger when the LED charactron ignited, adopt periodically and trigger sex work in order to prolong battery charactron in service life, periodically be: periodically ignite 1 time/second, each 0.5 second during work; Triggering property is: closed automatically as there not being triggering signal can not ignite in 5 minutes behind the light-emitting diode display periodic duty, triggering signal is sent by the human body infrared induction circuit again; Display U1 will ignite again before just the someone walked close to kitchen range, and the people leaves gas-cooker and can close automatically again after 5 minutes.
(4) mu balanced circuit
Control circuit of the present invention uses No. 1 powered battery of six joints; The long-time back voltage that uses can descend; For the small-sized mu balanced circuit of DC DC is adopted in the stable event of circuit working; VT7, D2, C3, C5, C6, R7 have formed series voltage regulator in the circuit, and VT7 is that adjustment pipe, D2 are that Zener diode, R7 are dropping resistors, adds that filter capacitor is stabilized on the 5V operating voltage VT7 emitter stage output; Cell voltage 9V receives IC1 the 17th pin through R3, CPU inside have the voltage identification circuit when cell voltage drop to 5V when following CPU can output alarm signal make buzzer send rapid continuous alarm sound notice to change battery.
(5) flame detecting circuit
This circuit is made up of RT, VT4, VT5, R8, R9, R4, C7; RT is that thermocouple at high temperature produces voltage and inputs to the VT4 base stage; The multiple tube conducting that VT4, VT5 are formed; Collector voltage descends rapidly, receives IC1 the 21st pin through resistance R 4, and operate as normal IC1 the 21st pin should be an electronegative potential; If the accident extinguishing VT4 base voltage multiple tube that descends rapidly ends, but capacitor C 7 voltage can not suddenly change, and become high potential through more than 10 seconds time-delay IC1 the 21st pin, and CPU will send and close the fire instruction, and C7, R8 are RC delay time control elements.
(6) actuating motor drive circuit
This circuit is made up of relay K 2, VT6, resistance R 6; Because the signal of CPU output is drive motors directly; So closing the fire instruction, CPU make the VT6 conducting drive relay K 2 adhesives through R6 entering VT6 base stage by the output of 18 pin; After the K2 adhesive 5V voltage directly is added to motor, makes motor rotation driven gear group and valve body main shaft get back to zero-bit and close stove fire.
(7) warning circuit
This circuit is made up of VT3, BZ, R5, after the different alarm that IC1 the 22nd human hair combing waste goes out, receives the VT3 base stage through resistance R 5, amplifies rear drive buzzer BZ through triode VT3 and sends different chimes of dooms.
(8) each pin of cpu control circuit single-chip microcomputer IC1 connects and function
IC1 is the CPU computer chip, adopts single-chip microcomputer model P87LPC764, the external divider resistance R1 of its 1 pin, R2 input analog voltage; 2 pin are clock oscillator external capacitor C4, and capacity is 2.7 μ F; The 3-10 pin is the drive output of charactron display segment, is controlling seven strokes of luminous R17 * 8 that connect respectively of numeral; 11st, 14 bipods are dynamically to show the switching signal output, make charactron take turns display digit through two switching tubes of resistance R 13, R12 control; The 12nd and 13 pin are earth terminal and feeder ear; The 16th pin is human body infrared induction module MR control signal input connecting resistance R4; The 17th pin is that the voltage identification input pin is received anode through resistance R 4; 18 pin are to close fiery command signal output, carry out through resistance R 6 control drive circuits and close fire; 19,20 pin connecting resistance R16, R15 are the inputs of a touch sensible button position and ten digit pulses, to reach the purpose of adjustment display delay time; 21 pin connecting resistance R14 are flame detecting security control inputs, and the protection accident extinguishing can close gas check valve automatically; 22 pin connecting resistance R5 are alarm signal output ends, the exportable three kinds of chimes of dooms of CPU: first kind, in ten of adjustment or individual position delay time while, buzzer also can be followed and send button sound; Second kind, supply voltage is reduced to 4.5V when following, can send very brief continuously chimes of doom notice and change battery; The third, CPU closes fiery first three second in each control automatically, and beginning to send continuously, very brief beeping sound closes apolipsis up to stove fire; IC1 the 23rd, 24 pin are external concussion element X1, C1, C2 of CPU need of work.
Intelligent control is one of leading indicator, and it has determined the height of Based Intelligent Control, the size of security and functionally selective and effect.
Nobody closes stove fire automatically: adopt human heat to release infrared ray sensing and answer module MR, the purpose of this method is nobody to be arranged in operation before will surveying gas-cooker, all can detect in the time of before operating personnel leave the gas-cooker certain hour or get into kitchen range again; The operator sets time-delay or does not need time-delay as forgetting in gas-cooker uses; With after forget and close stove fire and leave the kitchen range top that this moment, human body infrared induction module MR can not receive infrared ray, can start the internal delay time circuit; Send signal after three minutes or five minutes and give CPU; CPU sends instruction to motor-drive circuit, and the kitchen range air feed is cut off in the control of driven by motor machinery, accomplishes the function of closing stove fire automatically.This also is a mandatory control, does not need regularly to avoid the time of thinking to lack, and forgets the danger of closing fire! If module detects unmanned signal and delays time, before operating personnel got back to kitchen range again, module was received signal again, and module is closed delay circuit at once, and module just can not sent signal yet and give CPU, and stove fire can not be closed yet.
The LED numeral shows: adjustable timing is closed stove fire: manual setting-up time, and some culinary arts need the available hand setting-up time of long period, and SM2, SM1 are a position and ten adjustment induction spring buttons, and whenever clicking charactron can increase by 1 minute or ten minutes.For make the gas-cooker panel easily cleaning adjust button and adopted " touch induction type button " and be installed in it below the panel with attractive in appearance, it is ultrared to require panel material to be that glass can pass, panel will be pressed close in the installation site.For directly perceived and under the occasion of insufficient light, use, show and adopted light-emitting diode display that can be luminous, and adopt the timing of countdown method that fire is closed in CPU control when the display double figures all is zero.In setting-up time, by by the first time button just started timer, beginning countdown work.
The accident control of stopping burning: gas-cooker in use be easy to occur accident extinguishing like: wind, pot etc. boils; In case in the time of can not rekindling stove fire immediately for a certain reason; Thermocouple is equipped with at the place at fire door, and fire extinguishes the disappearance of after heat potential difference can export control signal to CPU control pass fire through amplifier, delayer.
CPU control: this controller has adopted the micro-control technology to use a slice single-chip microcomputer, has simplified circuit, has dwindled circuit board, has improved reliability.In order to increase gas-cooker " third dimension " in use; In programming, write the sounding content as: very brief button sound is arranged, continuous beeping sound is arranged before closing fire automatically, when needing to change battery chimes of doom etc. arranged at every turn when the input time, all sends the sound by buzzer.
Like Fig. 3, shown in Figure 4, said control valve assembly is on existing gas stove switch knob, to add micro machine and mechanical driving part.
Said control valve assembly comprises valve body main shaft 1 its inner composition with external structure; Cone pinion 2; Gear bush 3; Spur gear 4; Generator shaft gear 5; DC speed-reducing 6; Ground connection dish 7; Ground connection dish spring 8; Ignition switch connecting ring 9; Large bevel gear 10; Keyway 11; Main shaft key pin 12; Back-moving spring 13; (control of zero-bit power supply) microswitch 14; Rotary spool 15; (control of zero-bit power supply) is dialled arm 16; Valve body escape pipe 17; Combustion gas input interface 18; Gear-box loam cake 19; Gear housing 20; Casing microswitch frame 21; Gear housing bottom 22; Valve base 23 and box flange 24.
Said control valve assembly outside is made up of valve base 23, gear housing 20, casing microswitch frame 21, box flange 24, gear-box loam cake 19, valve body main shaft 1 and DC speed-reducing 6; Valve body main shaft 1 is positioned at top; It also is the main shaft of manual knob; It is passed by gear-box loam cake center; The rotary spool 15 at lower end and valve base 23 centers, U type fork connects, and studs with (control of zero-bit power supply) on the rotary spool 15 and dials arm 16; Rotary spool 15 is in " zero-bit " combustion gas closed position, dials arm 16 and be also referred to as " zero-bit " breaking off the microswitch position when normality; Locate vertical centre from 10 millimeters of valve body spindle ends and stud with a main shaft key pin 12 and below key pin, back-moving spring 13 is housed with dialling between the arm 16, ground connection dish 7 is housed on eight millimeters place's main shafts 1 of gear-box loam cake external distance, the ground connection dish coils spring 8 to ground connection is housed between the loam cake down; The center studs with ignition switch connecting ring 9 on gear-box loam cake 19; On a casing microswitch frame 21 is arranged at gear housing bottom 22, microswitch 14 is housed outwardly, above main shaft key pin 12, apply mechanically a large bevel gear 10 face up its back side when one keyway, 11 normalities are arranged main shaft key pin 12 crouch in wherein, be engaged with cone pinion 2 its other ends with large bevel gear and stud with spur gear 4; Gear bush 3 is housed in the middle of the axle is fixed on gear housing 20 on one side near box flange 24; Spur gear 4 and generator shaft gear 5 engagements, DC speed-reducing 6 are fixed on that electric machine main shaft cooperates with generator shaft gear 5 on the box flange 24, are that combustion gas input interface 18 opposites one side is a valve body escape pipe 17 in valve base 23 1 sides.
Said mechanical part is work when closing fire automatically only; " open fire " owing to kept existing method for using " manually " so mechanical part is not worked; It is following to make flow process from the automatic pass firer that opens fire:
Before gas-cooker used, the original state of panel and control valve assembly each several part: the knob on the gas-cooker panel referred to that in zero-bit this moment, control valve was in the closed position; Valve body main shaft 1 passes large bevel gear 10 and is slidingly matched with it; The large bevel gear back side has a keyway 11 through the center; But center two edge lengths are different two-to-one approximately, and vertical with shaft centre line in the main shaft front portion main shaft key pin 12, two edge lengths are housed also is that two-to-one this moment is just in time in the embedded groove; Main shaft is connected this moment valve foremost with spool 15 in the closed position, and microswitch 14 is mounted on the valve body, is in microswitch (SW1) at this moment open position;
When bringing into use gas-cooker knob connection domain on the main shaft 17 when pressing down to be joined with the igniting connecting ring 9 that is fixed on the gear box cover with hand, connected igniter, igniter head begins sparking; This moment, the main shaft key pin 12 on the main shaft was also descending with main shaft, had broken away from the keyway 11 below the large bevel gear 10; Continue to rotate counterclockwise main shaft, the spool 15 that links to each other with main shaft also rotates with dialling arm 16 simultaneously, and gas has been connected fire and lighted, and dials arm 16 and has also unclamped microswitch 14, and the SW1 closure has been connected circuit power; Continue to rotate to fire amount and unclamp knob after suitable, accomplish the process of opening fire; This moment the main shaft key pin angled in the outside of keyway with flute profile be 10 °～180 ° (it is big or small to look fire).
When CPU sends " closing fire " instruction; Drive circuit gives reducing motor 6 energisings (60 rev/mins of motor speeds); Motor (left side is looked) driven gear 5 counterclockwise rotates, and the gear 4 that is engaged with just rotates with coaxial cone pinion 2 in a clockwise direction, so because the same cone pinion rotating speed with 4 numbers of teeth of spur gear 5 also is 60 rev/mins; Because the rotation of cone pinion; Being engaged with large bevel gear 10 sees from above also to begin rotating velocity of rotation clockwise: cone pinion 13 teeth, large bevel gear 43 tooth ratio 3.3 need more than three seconds so large bevel gear whenever circles; Large bevel gear clockwise rotates under driven by motor, when back side keyway 11 is parallel with main shaft key pin 12 for the first time, can not goes into groove owing to key is different with groove both sides length and slip over; Bevel gear continues to rotate to parallel time slot and key both sides equal in length for the second time, and main shaft key pin 12 is because the effect of following back-moving spring 13 embeds in the bevel gear keyway 11, and main shaft 1 by the large bevel gear band at this moment and clockwise rotated; Certainly spool 15 is being with and is being dialled arm 16 and also follow main shaft to rotate together; Forward to microswitch 14 shutoffs when dialling arm, this moment, knob was just in time got back to zero-bit, and control circuit outage motor also stops operating at once; One switches back to reset condition, closes fiery function automatically thereby accomplish; DC speed-reducing 6 in the control valve assembly be critical component it directly have influence on dynamo-electric translation function; Because two fire doors all respectively are equipped with this device of cover, so left and right sides fire door can be independent of each other by independent operation.
The control valve assembly has two kinds of control methods;
(1) but the control valve manual manipulation: during use valve body main shaft 1 downwards by and when rotating; Driving ground connection coils 7 descending, rotary spool 15 and dials arm 16 and rotate; This moment ground connection dish 7 with ignition switch connecting ring 9 collide the ground connection igniting, combustion gas is opened and microswitch 14 energized; Gas-cooker is lighted, and hand-screw rotary valve body main shaft scalable firepower is big or small and close stove fire, accomplishes the function of hand switch gas-cooker.
(2) control valve also can electronicly be controlled: DC speed-reducing 6 is installed on the gear housing flange 24 and links to each other with generator shaft gear 5; Generator shaft gear and spur gear 4 engagements, the straight-tooth wheel shaft is connected with cone pinion 2 through gear bush 3, and cone pinion meshes with large bevel gear 10 again; Valve body main shaft sliding fit is with it passed at the large bevel gear center; Stud with main shaft key pin 12 on the valve body main shaft, main shaft key pin 12 just often embeds large bevel gear back side keyway 11, must press the valve body main axis rotation owing to manually open fire; So open fire back main shaft key pin 12 withdrawed from keyway 11 and with keyway 11 shapes have a certain degree (looking the size of opening fire); Drive meshed gears and rotate when DC speed-reducing gets electric rotation, last large bevel gear 10 rotates with (looking down) direction clockwise, when turn to for the second time keyway 11 and main shaft key pin 12 when parallel when the effect lower main axis key pin of back-moving spring 13 can embed in the keyway of the large bevel gear back side again; The valve body main shaft is driven down by large bevel gear and also clockwise rotates; The valve body main shaft drives spool 15 and dials arm 16 rotations with (control of zero-bit power supply), closes combustion gas, power cutoff up to zero-bit, accomplishes the program of closing stove fire automatically.
Control valve assembly profile and each several part are seen Fig. 4, and motor and gear combination internal structure relation are seen Fig. 3; Describe below:
(1) DC speed-reducing owing to close gas valve and do not need speed designs in 3-5 execution in second, so DC speed-reducing needs 60 rev/mins/5V, power of motor can select 0.5 watt miniature.
(2) gear combination, static relation is seen Fig. 4, and electric machine main shaft is installed a spur gear 5, is engaged with the gear 4 identical numbers of teeth, and cone pinion 2 and spur gear 4 coaxial tight fits are equipped with location axle sleeve 3 in the middle of the axle; Under cone pinion, be engaged with a large bevel gear 10,, be slidingly matched and vertically be provided with valve body main shaft 1, promptly passed large bevel gear 10 and be slidingly matched with it, seen Fig. 3 through the large bevel gear center; The jut at the large bevel gear back side, vertical centre have a keyway 11, and does not wait on the both sides, center is 2 to 1; From the terminal 1 centimeters vertical centre of main shaft main shaft key pin 12 is being housed, does not wait on the both sides, center also is 2 to 1.
(3) housing is installed, is mainly contained two parts, gear housing and box cover; Casing be an integral body in order to explain, divide three parts, see accompanying drawing 4 tops 20, bottom 22 and flange 24; Gear combination all is installed in top and flange is inner, and motor is installed on the flange, and motor shaft is connected with gear 5; Box cover all is sealed in gear combination in the casing; Be provided with microswitch frame 21 at lower box.
(4) valve body, this part adopt the supporting use in bottom of standard controlling valve for gas range body, but also independent design, middle rotary spool 15 is pitched with main shaft 1 and is connected, and the position is in the gear housing bottom; The valve body bottom has combustion gas to get into interface 18, escape pipe 17.
Operation principle of the present invention and operating process:
As shown in Figure 5; Before gas-cooker uses; The original state of gas-cooker panel and control valve assembly each several part: the knob 1-3 on the gas-cooker panel 1-1 refers in zero-bit; Knob 1-3 one side correspondence is provided with display screen 1-4 nil and shows, this moment, control valve all was in the closed position, and valve body main shaft 1 passes large bevel gear 10 sliding fit with it; The large bevel gear back side has a keyway 11 through the center but center two edge lengths are different, for two-to-one, with central vertical a key pin 12 is housed in the main shaft front portion; Two edge lengths also are two-to-one, and this moment is just in time in the embedded groove, because microswitch 14 (SW1) is mounted on the valve body; One group of arm 16 of fixed installation above the spool 15; This moment, just in time turn-offed microswitch the position, and microswitch is in open position, the circuit board outage.
When bringing into use gas-cooker that knob terminal pad on (stroke is 6 millimeters) main shaft 7 when pressing down is joined with the igniting connecting ring 9 that is fixed on the gear box cover; Connected igniter, kitchen range 1-2 igniter head begins sparking, and the main shaft key pin 12 on the main shaft is also descending with main shaft at this moment; Broken away from the keyway 11 below the large bevel gear; Continue to rotate counterclockwise main shaft, the spool that links to each other with main shaft 14 also rotates with dialling arm 16 simultaneously, and gas has led to fire to be lighted, dial arm and leave original position; Microswitch SW1 closure has been connected power supply, and nixie display U1 ignites; Unclamp knob after the fire size mixes up, this moment, the main shaft key pin was angled 10 °～180 ° (looking adjustment fire size) in the outside and the flute profile of keyway; Unclamp knob after fire is lighted, main shaft upwards resets about 2.5 millimeters under the effect of back-moving spring 13, and ground connection dish 7 has left igniting connecting ring 9 along with moving up under the effect of spring 8 at this moment, has broken off ignition switch.
When sending, CPU closes the fire instruction; Drive circuit gives motor 6 energisings (60 rev/mins of motor speeds); Motor driven gear 5 (left side is looked) rotates counterclockwise, and the gear 4 that is engaged with and coaxial cone pinion 2 are to clockwise rotate, so because gear 5 and the same cone pinion rotating speed of gear 4 numbers of teeth same motor revolution; Drive by cone pinion; Large bevel gear is seen from above to clockwise rotate velocity of rotation: cone pinion 13 tooth large bevel gears 43 tooth ratio 3.3 need more than three seconds so large bevel gear whenever circles; When keyway is for the first time parallel with the main shaft key pin, can not goes into groove owing to key is different with groove both sides length and slip over when large bevel gear clockwise rotates under driven by motor, large bevel gear continues rotation; To the second time parallel time slot and key both sides equal in length; Main shaft key embeds in the bevel gear keyway, and main shaft is being with to clockwise rotate this moment, and spool 14 is being with and is being dialled arm 16 and also follow main shaft to rotate together certainly; Forward to microswitch 14 shutoffs when dialling arm; Just in time be zero-bit this moment, and spool 15 shutoff sources of the gas, control circuit outage, motor also stop operating at once, and all return to reset condition.
This machinery control section is the important operating part of controller; It is vertical with main shaft and pass the center on the main shaft of valve body, to adopt sliding fit that one bevel gear is installed, and connects through " clutch ", adopts according to the handling characteristics clutch; " groove and key " formula clutch; At the bevel gear back side center grooved in the main shaft lower end 1 centimeters dress key, connect motor through gear, accomplish rotary main shaft and close stove fire.Because closing gas valve does not need speed; Design is in 3-5 execution in second; So DC speed-reducing need decelerate to 60 rev/mins, according to the dynamics of rotating spindle needs, power of motor selects 0.5 watt, 5V, 60 rev/mins minisize dc reducing motor as power.Microswitch SW1 is installed on the valve body, when main axis rotation arrives zero-bit, also just in time microswitch is turn-offed, cut off working power.
For the use present situation " switch stove fire and time control are also being continued to use manually " that thoroughly changes family's gas-cooker; Just must in the design of gas-cooker, add the digital intelligent notion; Consider the custom that gas-cooker uses for many years, kept original method for using of opening fire and adjusting firepower.Control device of the present invention is innovated on structure and principle; Design combines hand control valve, machinery and motor and forms the multi-functional control valve assembly in line with keeping principle that advantage remedies shortcoming; Gas-cooker is introduced in digital mechanical automation; Satisfied designing requirement; As increase the gas-cooker function and have, human body identification control, time control, close fire control system, accident stop burning control, warning etc. automatically; Through the variation of mentality of designing, make these several designs practical more with have hommization.
In a word, this device is introduced digital control and Electromechanical Control, makes existingly can only use manual single operation, becomes also to possess intelligent safer, the kitchen appliance of controlling more easily removing manually.
Above-mentioned with reference to embodiment to the detailed description that this family's gas-cooker intelligent and safe control device carries out, be illustrative rather than determinate; Therefore in the variation and the modification that do not break away under the general plotting of the present invention, should belong within protection scope of the present invention.
Claims (10)
1. family's gas-cooker intelligent and safe control device is characterized in that this device comprises digital control circuit part and control valve assembly;
Said digital control circuit is by forming with lower unit: human body infrared induction module, touch sensible key circuit, nixie display and circuit, mu balanced circuit, flame detecting circuit, motor-drive circuit, warning circuit, cpu control circuit; Said cpu control circuit adopts single-chip microcomputer IC1, and said digital control circuit adopts battery-powered;
Said control valve assembly is on the gas stove switch valve body, to add micro machine and mechanical driving part.
2. family according to claim 1 gas-cooker intelligent and safe control device is characterized in that said human body infrared induction module is made up of human body infrared induction module MR, delay control switch K1; Human body infrared induction module MR is detected by the pyroelectricity human infrared sensor and converts signal of telecommunication output a behind internal amplifier, comparator, delay circuit after human body infrared into and keep electronegative potential; When sensor detects when human body infrared; Through time-delay output a, convert high potential into and be input to IC1 the 16th foot control system pass fire; Said delay control switch K1 is provided with two grades of time-delay 3 minutes and 5 minutes respectively.
3. family according to claim 1 gas-cooker intelligent and safe control device; It is characterized in that said touch sensible key circuit is by touch sensible button chip IC 2, IC3; LED 1, LED2, capacitor C 8, C9, C10 and two induction pole plate SM1, SM2 form; Promptly form change direct-to-ground capacitance and electrical quantity when pressing the panel touch key-press with induction electrode; Output 1 pin becomes pulse of high potential output by electronegative potential after touch sensible button chip IC 2 or IC3 processing; Send into IC1 the 19th, 20 pin through resistance R 15, R16; IC1 the 19th, 20 pin are controlled charactron position or ten respectively and are added one, and induction pole plate SM2, SM1 control a position, ten respectively, LED 1, LED2 be respectively ten with a position key position indicator lamp.
4. family according to claim 1 gas-cooker intelligent and safe control device is characterized in that said nixie display and circuit by LED nixie display U1, switching tube VT1, VT2, and resistance R 10, R11, R12, R13, R17 form; IC1 the 3rd～10 pin is the drive output of digital section; Be connected to each section of nixie display through current-limiting resistance R17; IC1 the 11st and 14 pin make nixie display take turns display digit through resistance R 13, R12 gauge tap pipe VT1, VT2, and CPU sent and closes the fire instruction when nixie display countdown finished.
5. family according to claim 1 gas-cooker intelligent and safe control device; It is characterized in that said mu balanced circuit adopts the small-sized mu balanced circuit of DC-DC; Manage VT7, Zener diode D2 by adjustment in the said mu balanced circuit, filter capacitor C3, C5, C6, dropping resistor R7 has formed series voltage regulator; Cell voltage 9V receives IC1 the 17th pin through resistance R 3, and CPU inside is provided with the voltage identification circuit and drops to 5V when following when cell voltage, and CPU sends instruction buzzer warning notice and changes battery.
6. family according to claim 1 gas-cooker intelligent and safe control device is characterized in that said flame detecting circuit by thermocouple RT, multiple tube VT4, VT5, and resistance R 8, resistance R 9, resistance R 14, capacitor C 7 is formed; Said capacitor C 7, resistance R 8 are the delay time control element; Said thermocouple RT at high temperature produces voltage and inputs to the VT4 base stage, the multiple tube conducting that VT4, VT5 are formed, and collector voltage descends rapidly, receives IC1 the 21st pin through resistance R 4; The IC121 pin is an electronegative potential during operate as normal; If accident extinguishing VT4 base voltage descends rapidly, multiple tube VT4, VT5 end, and VT4, the VT5 collector voltage raises rapidly but capacitor C 7 voltage can not be suddenlyd change, and through time-delay in 10 seconds, IC1 the 21st pin became high potential, and CPU will send and close the fire instruction.
7. family according to claim 1 gas-cooker intelligent and safe control device is characterized in that said motor-drive circuit is made up of relay K 2, triode VT6, resistance R 6; CPU closes the fire instruction and gets into triode VT6 base stage by the output of 18 pin through resistance R 6; Make triode VT6 conducting drive relay K 2 adhesives; After relay K 2 adhesives 5V voltage directly is added to motor, makes motor rotation driven gear group and valve body main shaft get back to zero-bit and close stove fire.
8. family according to claim 1 gas-cooker intelligent and safe control device is characterized in that said warning circuit is made up of triode VT3, buzzer BZ, resistance R 5; After the different alarm that IC1 22 human hair combing wastes go out, receive triode VT3 base stage through resistance R 5 and send alarm sound through amplifying rear drive buzzer BZ.
9. family according to claim 1 gas-cooker intelligent and safe control device; It is characterized in that the single-chip microcomputer IC1 model that said cpu control circuit adopts is P87LPC764, its each pin connects as follows: the external divider resistance R1 of IC1 the 1st pin, R2 input analog voltage; IC1 the 2nd pin is clock oscillator external capacitor C4; The 3rd～10 pin is the drive output of each section of digital display numeral, and the luminous of seven strokes of numerals formed in control; IC1 the 11st, 14 bipods are dynamically to show the switching signal output, make charactron take turns display digit through two switching tubes of resistance R 13, R12 control; IC1 the 12nd and 13 pin earth terminal and feeder ears; IC1 the 16th pin is human-induced signal's input; IC1 the 18th pin is to close the moving signal output part of fireflood; IC1 the 19th, 20 pin are inputs of ten on induced key switch and individual position driving display; IC1 the 21st pin connecting resistance R4 is a flame detecting security control input; IC1 the 22nd pin connecting resistance R5 is an alarm signal output ends; IC1 the 23rd, 24 pin are external concussion element X1, capacitor C 1, C2 of CPU need of work.
10. family according to claim 1 gas-cooker intelligent and safe control device; It is characterized in that micro machine and mechanical driving part that said control valve assembly inside is provided with; Micro machine is to be by valve body main shaft, cone pinion, gear bush, spur gear, generator shaft gear, igniting ground connection dish, ground connection dish spring, ignition switch connecting ring, large bevel gear, keyway, main shaft key pin, back-moving spring, rotary spool, power supply control microswitch, zero-location control microswitch dial, valve body escape pipe, combustion gas input interface, umbrella gear box loam cake, bevel gear casing, casing microswitch frame, bevel gear casing bottom, valve base and box flange by DC speed-reducing, mechanical driving part, connects to form; During said valve body main shaft manual manipulation; The valve body main shaft downwards by and when rotating counterclockwise; Drive that igniting ground connection dish is descending, rotary spool and zero-location control dial arm in company with rotation; This moment, combustion gas and control microswitch connecting power are lighted a fire, opened to ignition switch connecting ring ground connection, and hand-screw rotary valve body main shaft is regulated the firepower size, and the reverse rotation main shaft cuts out stove fire; When said valve body spindle machine is controlled; DC speed-reducing is installed on the gear housing flange and links to each other with generator shaft gear, generator shaft gear and spur gear engagement, and the straight-tooth wheel shaft is connected with cone pinion through gear bush; Cone pinion meshes with large bevel gear again; Valve body main shaft sliding fit is with it passed at the large bevel gear center, studs with the main shaft key pin on the valve body main shaft, embeds when the main shaft key pin is normal in the keyway of the large bevel gear back side; Must press the valve body main axis rotation owing to manually open fire; Back main shaft key pin promptly withdraws from keyway so open fire; When getting electric rotation, DC speed-reducing drives the meshed gears rotation; Drive large bevel gear at last and rotate in a clockwise direction, when turn to keyway when parallel with the main shaft key pin effect lower main axis key pin at back-moving spring embed again in the keyway of the large bevel gear back side, the valve body main shaft is driven down by large bevel gear and is also clockwise rotated; The valve body main shaft drives spool and dials the arm rotation up to zero-bit with the zero-location control microswitch, closes combustion gas, stove fire is closed in the power cutoff completion automatically.
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| CN2012102864837A CN102767850A (en) | 2012-08-13 | 2012-08-13 | Intelligent safety control device for household gas cooker |
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| CN103982923A (en) * | 2014-06-03 | 2014-08-13 | 彭文俊 | Intelligent unmanned gas safety monitoring device and method |
| CN103994476A (en) * | 2014-06-04 | 2014-08-20 | 宁波杭州湾新区儿宝婴童用品有限公司 | Multi-functional gas stove |
| CN104006419A (en) * | 2014-06-20 | 2014-08-27 | 佛山市禅城区星火燃气具电子有限公司 | Ignition controller powered by battery and used for gas stove |
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| CN104698910A (en) * | 2013-12-10 | 2015-06-10 | 陈卫斌 | Touch key and LED display drive IC (integrated circuit) |
| CN103982923A (en) * | 2014-06-03 | 2014-08-13 | 彭文俊 | Intelligent unmanned gas safety monitoring device and method |
| CN103994476A (en) * | 2014-06-04 | 2014-08-20 | 宁波杭州湾新区儿宝婴童用品有限公司 | Multi-functional gas stove |
| CN103994476B (en) * | 2014-06-04 | 2016-08-24 | 宁波方太厨具有限公司 | Multifunction gas stove |
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| CN104266232A (en) * | 2014-10-09 | 2015-01-07 | 潘兆铿 | Ignition controller for gas stove powered by battery with power energy conservation |
| CN104654023A (en) * | 2014-12-30 | 2015-05-27 | 广东自助者管道科技有限公司 | Gas pipeline safety detection joint-control equipment convenient in user self-service control |
| CN106468907A (en) * | 2015-08-17 | 2017-03-01 | 佛山市顺德区美的电热电器制造有限公司 | The induction controller of household electrical appliance, method and household electrical appliance |
| CN105276635A (en) * | 2015-10-29 | 2016-01-27 | 苏东领 | Device and method for achieving dry burning-resistant protection through self-extinguishing protection of gas stove |
| CN105972646A (en) * | 2016-05-26 | 2016-09-28 | 江西师范大学 | Gas stove control circuit |
| CN105972646B (en) * | 2016-05-26 | 2017-11-07 | 江西师范大学 | A kind of gas-cooker controls circuit |
| WO2018116034A1 (en) * | 2016-12-20 | 2018-06-28 | Universidad De Medellin | System for identifying and controlling leaks in gas stoves |
| CN110529887A (en) * | 2019-09-30 | 2019-12-03 | 金贡电器科技(中山)有限公司 | A kind of electromagnetic oven and its control method |
| CN110594789A (en) * | 2019-10-14 | 2019-12-20 | 杨景亮 | Intelligent stove |
| CN111190360A (en) * | 2019-12-25 | 2020-05-22 | 珠海格力电器股份有限公司 | Control method and device of intelligent kitchen ware, server and storage medium |
| CN111190360B (en) * | 2019-12-25 | 2021-06-18 | 珠海格力电器股份有限公司 | Control method and device of intelligent kitchen ware, server and storage medium |
| CN111706884A (en) * | 2020-05-13 | 2020-09-25 | 宁波方太厨具有限公司 | Working method of intelligent kitchen |
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Application publication date: 20121107 |