CN105241518A - Intelligent gas meter for flameout prevention, leakage prevention and dry-burning prevention - Google Patents

Abstract

The invention discloses an intelligent gas meter for flameout prevention, leakage prevention and dry-burning prevention. In order to improve the use performance and safety of gas stoves and gas water heaters, the invention provides a technical solution for slightly improving a device like the existing IC prepayment intelligent gas meter with structures like a micro-controller, a control program, an electromagnetic valve, a sensor, an input port, an indicator and a power source. In the technical solution, judgments about gas leakage, accident flameout and dry burning and a subprogram for controlling the on and off of the electromagnetic value are added in the control program of devices like the intelligent gas meter provided herein; a timer subprogram is attached; a temperature sensor, a humidity sensor, an electrical resistance type switch and a timer function key are extra mounted on the outside; and the judgment about the flameout is made by a technical means that high temperature exists or not when the switch is switched on. By adopting the technical solution, on the whole, the safety on the current aspect of using gas is improved and the use performance of the gas stoves is strengthened.

Description

The intelligent gas meter of anti-stall leakproof anti-dry

Affiliated field: gas-fired equipment, has the electronic product of microprocessor.

Background technology:

Who does not commit excesses a minor error, such as forgets to turn off the light, and forgets to turn off the tap.Forgetting to turn off the light is exactly waste some electricity, and forget to turn off the tap, waste may be just larger, and also may cause unknown losses, such as, family floods.As for another sample in the life of house, coal gas, that just more can not forget to have closed.

Recently, Tianjin government performs actual deeds for the people, and start old building transforming engineering, therefore I sees a kind of prepayment IC-card intellectual water meter.This intellectual water meter developed along pre-paying kilowatt-hour meter thinking, your tap water turned off by its meeting solenoid valve.So, I just thinks, does the race that this intellectual water meter can be utilized to realize anti-tap water emit leakage close? 2013-7-18, I submits the patented claim of " intellectual water meter of leakage is emitted in anti-race " by name to Tianjin Department of Intellectual Property, then, I thinks again, life three major issues at home, water, electricity, coal gas, water, electricity all improve to some extent like this in safe handling, so, can be done some in coal gas use and improve?

I looks into, intelligent gas meter, and namely prepayment IC-card gas meter, flow meter Taian Shandong is on sale, but function is also be only limitted to numeration and valve-closing door.And at the secure context that combustion gas uses, although people have done a lot of effort already, such as, there is the anti-stall safety standard of gas-cooker in country, use the thermoelectricity gas-cooker that occasionally bimetallic strip is anti-stall and the anti-stall gas heater of ionic formula, coal gas leakage detection, alarm device, coal gas automatic safety valve, but practice shows, actual product is not do very well.

So, to this kind of use microprocessor, containing solenoid valve, indicator, power supply, card reading interface be placed in subscribers feeder enter end intelligent instrument, I feels to give their more missions.Especially, the anti-stall or anti-stall function of bimetallic strip of thermopair on some gas-cookers is also abnormal, and is opening by mistake switch, and anti-dry aspect is not then protected.At present, with this idea the most close be intelligent gas-burning stove, but its discord gas meter, flow meter combines, and is also difficult to take precautions against pipeline leakage before stove.

Summary of the invention: the invention, in order to improve gas kitchen ranges, the usability of gas heater and security, proposes one to this technical scheme doing a bit to improve containing microprocessor, control program, solenoid valve, inductor, input interface, indicator, the isostructural equipment of power supply of existing IC prepayment intelligent gas meter, flow meter.Whether the program proposes to increase in the control program of this kind equipment exists gas leakage, accident extinguishing, the judgement of dry-fire condition and the subroutine of Controlling solenoid valve shutoff, additional timing subroutine, outside reload temperature sensor, humidity sensor, resistance-type switch, timing function button, and the judgement that whether there is misfiring condition is by whether there being this technological means of high temperature during switch opens.This scheme can promote on the whole at present at the security used in combustion gas and the using function strengthening gas-cooker.

Accompanying drawing illustrates: Fig. 1 is the general structure schematic diagram of the intelligent gas meter of this kind of anti-stall leakproof anti-dry,

Fig. 2 is the logic diagram of the intelligent gas meter of this kind of anti-stall leakproof anti-dry.

In Fig. 1,1 intelligent gas meter, 2 gas-cookers, 3 high temperature sensors, 4 resistance-type switchs, 5 humidity sensors, 6 keypads, 7 big fire timings, 8 little fire timings, 9 abnormal red lights, 10 normal green lights, 11 gas sensors, 12 lampblack absorbers, 13 active igniter head.

Embodiment:

It will be argued that, use combustion gas to only have an object, that burns exactly, so if there is combustion gas to flow out, and burning do not detected, that just must closing valve.As Fig. 1, when any one resistance-type switch from closed become open time, national Specification time delay 60 seconds, the present invention sets 15 seconds, and high temperature sensor corresponding in 15 seconds does not detect high temperature, and intelligent gas meter closes air outlet valve.Like this, seem gas sensor here can, but as place improper article around gas-cooker in order to prevent, cause gas-fired insufficient, had better arrange.A just sensor, it judges to be completed by the microprocessor of intelligent gas meter inside.There is this situation, need to use IC-card to carry out important reset operation, the reason that intelligent gas meter closes valve before reset, should be made clear.

Arrange timing function, object mainly wishes the intelligence playing intelligent gas meter, and let us experiences the progress of Technology Times.How long you need big fire, press big fire button, and gas meter, flow meter can show minute, per secondly add 1, and the numeral of wishing to you, you unclamp.The timing of little fire is similar.If you change little fire after wishing big fire certain hour, first set big fire, the little fire of rear setting, if you wish that little fiery certain hour changes big fire, you just first set little fire, rear setting big fire.Operation is more easily, intelligent gas meter internal processes stored on several cooking book to cook program, you press big fire key and little fiery key 5 seconds simultaneously, the pre-set programs of gas meter, flow meter display display from program 1, within every 2 seconds, add 1, often kind of program of cooking can write in instructions.In order to prevent your misoperation, spy arranges humidity sensor 5, according to the operating process of general cooking processed food, if you still open fire when humidity is too low, estimates that you may make mistakes, and intelligent gas meter will active valve-off.Press big fire key and little fiery key 1-2 second, can realize general reset, general reset is exactly cancellation setting before this simultaneously.Big fire, little fire are comparatively speaking, and but, gas meter, flow meter inside can store general gas flow reference value.

Certainly, intelligent gas meter be made to realize additional function, just need corresponding subroutine is added on the basis of original program therein.The control program below providing a kind of intelligent gas meter adds anti-stall leakproof anti-dry subroutine Logic judgment flow process.

Initialization-arrange residue tolerance register mnz and 15 second time register bht and big fire, little fiery time register dht, xht.Start---do are st reading flow numerical quantity and velocity amplitude zero? have key-press input? have, enter default subroutine, do not have, return st.Flow value is not zero, the numerical value of mnz is deducted this numerical value and sends mnz back to, judge mnz=0? be, start and close valve subroutine, mnz is not equal to 0, then read switch, each mouth input of temperature, switch is had to open, the input that simultaneous temperature has? have, do there is there the timing subroutine request of setting? have, perform, no, does not is not it 0 that dht, xht have? have, perform this numeric counter, comparison operation, no, st is continued.Each mouth input does not have switch to open, but there is flow number to change?, be start and close valve subroutine, light abnormal pilot lamp red light simultaneously.Read each mouth input of switch, temperature, have switch to open, corresponding high temperature without state? have, start timing in 15 seconds, 15 seconds arrive, and equal the numerical value of bht, high temperature has had, and has, and returns st, does not have, and start and close valve subroutine.Read switch, each mouth input of temperature, gas sensor or humidity sensor have input value abnormal, have, and start and close valve subroutine, light abnormal pilot lamp red light, do not have, return st.

If add initiatively igniter head further, namely circuit has the output connecting gas combustion range ignition switch, intelligent gas meter internal processes increases timing routine, can also realize the predetermined timing automatic cooking.As used the big fire on keypad, little fiery two buttons, press 10 seconds simultaneously, enter clock setting program, big fire key pipe hour, little fiery key pipe minute, can realize with the standard time synchronous.When such as the time in midsummer, went to work in the morning, first mung bean is washed or fricassee is put condiments well and is placed on gas-cooker, and setting is opened fire at 3 in afternoon, turns on gas cooker valve.Here do not worry, according to program, after 15 seconds, intelligent gas meter closes the valve of oneself automatically.Afternoon 3 point, intelligent gas meter starts action, opens burnt gas valve, by gas-cooker automatic ignition, cooks the meat that the mung bean that soaked or condiments have been simmered, according to the program of internal preset, carries out rear valve-closing, cutoff.Evening 6 point, when you enter, sweet mung bean soup or fricassee are cool, just in time eat.Compared with the Internet of Things of the words of people at present, this is the facility being easy to just can realize, and certainly, if be ready, additional WIFI communication board by the circuit of intelligent gas meter, also can enter internet.Further, then present air-conditioning also synchronously with the standard time could carry out fixed cycle operator, and you can set afternoon 5:45 and divide and turn on the aircondition, and so, when you enter door, be also cool in room, food is also good to eat, whether very refreshing! Further, due to costs such as checking meter can be saved, estimate that such intelligent gas meter cost is installed very limited.

Technical scheme of the present invention, has two kinds of sensors in gas leakage preventing, employs life-span relatively good pyrostat and the highly sensitive microprocessor judges having sophisticated systems, increases and stores timing program.Promote the use of, can make up the gap of gas-cooker between the various product of secure context, promote using function and the management level of gas-cooker, people are enjoyed the facility of scientific-technical progress.

Claims (2)

1. the intelligent gas meter of an anti-stall leakproof anti-dry, the invention is in order to improve gas kitchen ranges, the usability of gas heater and security, propose one and contain microprocessor to existing IC prepayment intelligent gas meter, flow meter is this, control program, solenoid valve, inductor, input interface, indicator, the isostructural equipment of power supply makes the technical scheme a bit improved, it is characterized in that: in the Internal Control Procedure of this kind equipment, add whether there is gas leakage, accident extinguishing, the subroutine that the judgement of dry-fire condition and Controlling solenoid valve turn off, additional timing subroutine, there is the temperature sensor installed additional outside, humidity sensor, resistance-type switch, timing function button is connected with it, and the internal circuit that part need access this kind equipment of Internet of Things also adds WIFI communication board.

2. the intelligent gas meter of anti-stall leakproof anti-dry as claimed in claim 1, is characterized in that: the subroutine of this increase is adopt temperature sensor in the regulation delay time that judges whether to open at resistance-type switch to have high temperature signal to input this technological means for the judgement that whether there is misfiring condition.