CN101358743B - Gas sensing type anoxia protection arrangement - Google Patents
Gas sensing type anoxia protection arrangement Download PDFInfo
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- CN101358743B CN101358743B CN200710075345A CN200710075345A CN101358743B CN 101358743 B CN101358743 B CN 101358743B CN 200710075345 A CN200710075345 A CN 200710075345A CN 200710075345 A CN200710075345 A CN 200710075345A CN 101358743 B CN101358743 B CN 101358743B
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- oxygen
- anoxia protection
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Abstract
The present invention relates to the field of the oxygen-deficiency protection device that is applied to the civil fuel gas facility, and provides a gas-sensing oxygen-deficiency protection device anda testing method thereof. The gas-sensing oxygen-deficiency protection device comprises a spraying nozzle, an ignition pin, a gas introduction pipe, a combinational bracket and a gas sensor, wherein,the gas sensor is an electrochemistry gas sensor, an infrared-typed gas sensor or a spectrum-typed gas sensor. The gas-sensing oxygen-deficiency protection device can produce the electric signal by detecting the content of the oxygen, the carbon oxide gas or the carbon dioxide gas in the air, so as to control the supply of the fuel gas. The device has the advantages that the examination sensitivity is high; in addition, the gas-sensing oxygen-deficiency protection device examines the content of the oxygen, carbon oxide gas or the carbon dioxide gas respectively; once the content of one gas exceeds the safety range, an electric signal is produced, so that the fuel gas is cut off, thereby greatly strengthening the security performance.
Description
Technical field
The present invention relates to be applied to the anoxia protection arrangement field in the domestic gas tool, relate in particular to a kind of gas sensing type anoxia protection arrangement.
Background technology
Combustion gas tool safety system comprises flame-out protection device, anoxia protection arrangement, overtemperature protection system and gas leakage alarm protective device etc.Their effect is overheated in combustion instability, flame-out, anoxic, machine, gas leakage and service time when long, can close source of the gas automatically, guarantees that the combustion gas tool is safe in utilization.Wherein the anoxic anoxia protection arrangement is when oxygen is lower than setting in the air, and anoxia protection arrangement cuts off gas supply automatically, and Gas appliance is quit work, and prevents that indoor oxygen from continue reducing and have an accident.It is detection components that anoxia protection arrangement generally adopts thermocouple, and magnetic valve is the action executive module.Anoxia protection arrangement at present commonly used has two kinds of single thermocouple-magnetic valve and double-thermocouple-magnetic valves.The operation principle of magnetic valve anoxia protection arrangement is to utilize flame to make anoxia protection arrangement work because of oxygen content in gas component and the air changes the variation that causes.When flame combustion just often, but flame patch thermocouple head it is heated, make thermocouple produce thermoelectrical potential, give solenoid valve, magnetic valve is held open state, keeps the burning of combustion gas circulation and flame stabilization; When in the air during anoxic, the flame root leaves fire hole, random jump occurs, and flame elongates, flame temperature descends, fix because of thermocouple location, thermocouple does not reach flame, absorbs heat and reduces, thermoelectrical potential output reduces, the opening that can not keep magnetic valve, closed electromagnetic valve cuts off gas supply.
Chinese patent 90206084.8 discloses a kind of constant value type twin thermocouple water heater anoxia protection arrangement, and its operation principle is by thermocouple flame detection temperature at any time, and flame temperature reduces under the state that oxygen lacks, and cuts off gas supply, plays the security protection effect.China's utility model patent 00219258.6 relates to a kind of anoxia protection arrangement; it is by base plate; thermocouple; igniter head; induction tunnel; connecing gas head and nozzle forms; its operation principle is when oxygen content reduces to setting; the blue flame in induction tunnel exit can not be stable at its exit continuous burning; but burn and extinguish in the disengaging exit; at this moment cool off rapidly because of fireless heating on the thermocouple top; supply voltage numerical value in thermocouple also drops to below the lower limit of operating voltage very soon, and burnt gas valve is in closed condition in the gas appliance thereby make.
The combustion gas tool in use can constantly consume oxygen, produces poisonous and hazardous gases such as carbon monoxide, carbon dioxide, and existing safety device can only detect the content of oxygen, can not the perception carbon monoxide and the variation of carbon dioxide.Along with technological progress and humanization designing, also constantly perfect, product is upgraded step by step becomes trend of the times to safety precautions.
Summary of the invention
The object of the present invention is to provide a kind of gas sensing type anoxia protection arrangement; this device can be by monitoring airborne oxygen, CO gas or carbon dioxide gas body burden; control the on off state of burnt gas valve in the gas appliance, reach the purpose of safeguard protection.
For achieving the above object, technical scheme of the present invention is: a kind of gas sensing type anoxia protection arrangement, comprise nozzle, igniting pin, air entraining pipe and combined bay, and described combined bay sidewall is provided with installing hole;
Described nozzle is located in the nozzle holder, the nozzle below connects seal nipple, and the seal nipple other end is connected with air entraining pipe, and nozzle and seal nipple are by being bolted to nozzle holder inside, the nozzle holder top is provided with burner, and described nozzle holder is fixed on the combined bay;
Be provided with ignitor in the described igniting pin, the igniting pin is provided with bolt, and described bolt matches the igniting pin is fixed on the combined bay with the double-screw bolt that is connected on being fixed on combined bay;
Described anoxia protection arrangement also comprises gas sensor; Described gas sensor outer race is provided with positioning tube, and positioning tube below is provided with bolt, and described bolt matches positioning tube and gas sensor are fixed on the combined bay with the double-screw bolt that is connected on being fixed on combined bay.
Described gas sensor is an electrochemical gas sensor.
Described gas sensor is fixed electric potential electroanalysis formula gas sensor or galvanic cell formula gas sensor.
Described gas sensor is the infrared type gas sensor.
Described gas sensor is the chromatograph-type gas sensor.After the igniting pin was lighted ever-burning flame, ever-burning flame was lighted main burner again, and oxygen reduces, and carbon monoxide and carbon dioxide increase; Gas reaches the induction window of chromatograph-type gas sensor, utilize chromatographic column in the chromatograph-type gas sensor with oxygen, carbon monoxide, carbon dioxide separation, measure and the record The whole analytical process by detector and logger, calculate each components contents with area normalization then; When oxygen content is lower than 16% or carbon monoxide gas body burden when reaching 80ppm or carbon dioxide gas body burden and reaching 0.8%, signal by the gas sensing system transmissions to control system; Control system is closed combustion gas, and the combustion gas tool is quit work.
Described burner is arc.
Gas sensing type anoxia protection arrangement of the present invention, overcome existing anoxia protection arrangement and can only realize cutting off fuel gas supply by the variation that detects oxygen content minimizing back flame temperature, reach safeguard protection purpose limitation, gas sensing type anoxia protection arrangement of the present invention can be by detecting the content of oxygen, CO gas or carbon dioxide in the air, produce the signal of telecommunication, thereby the supply of control combustion gas, its advantage is the detection sensitivity height, reach at 0.8% o'clock in the carbon dioxide gas body burden and promptly produce the signal of telecommunication, cut off combustion gas; When carbon monoxide content reaches 80ppm, produce the signal of telecommunication, cut off combustion gas; Be lower than at 16% o'clock at oxygen content and promptly produce the signal of telecommunication, cut off combustion gas; Gas sensing type anoxia protection arrangement of the present invention in addition detects respectively the content of oxygen, CO gas or carbon dioxide; as long as wherein a kind of content of gas exceeds safe range; promptly produce the signal of telecommunication, cut off combustion gas, strengthened its security performance greatly.
Description of drawings
Fig. 1 is a gas sensing type anoxia protection arrangement vertical profile structural representation of the present invention.
Fig. 2 is gas sensing type anoxia protection arrangement multiple shot array figure of the present invention.
Fig. 3 is a gas sensing type anoxia protection arrangement user mode schematic diagram of the present invention.
The drawing reference numeral explanation:
1. burner 2. combined bays
3. nozzle holder 4. nozzles
5. seal nipple 6. bolt a
7. bolt b 8. igniting pins
9. bolt c 10. air entraining pipes
11. positioning tube 12. bolt d
13. ignitor 14. connects double-screw bolt a
15. connect double-screw bolt b 16. clamping screws
17. contact 18. gas sensors
19. sectional shelf-unit sidewall 20. installing holes
The specific embodiment
A kind of gas sensing type anoxia protection arrangement comprises nozzle 4, igniting pin 8, air entraining pipe 10, combined bay 2 and gas sensor 18;
Described nozzle 4 is located in the nozzle holder 3, nozzle 4 belows connect seal nipple 5, seal nipple 5 other ends are connected with air entraining pipe 10, nozzle 4 and seal nipple 5 are fixed on nozzle holder 3 inside by bolt a6, nozzle holder 3 tops are provided with burner 1, burner 1 is arc, and described nozzle holder 3 is fixed on the combined bay 2;
Be provided with ignitor 13 in the described igniting pin 8, igniting pin 8 is provided with bolt c9, and described bolt c9 matches igniting pin 8 is fixed on the combined bay 2 with the double-screw bolt a14 that is connected on being fixed on combined bay 2;
Described gas sensor 18 is a fixed electric potential electroanalysis formula gas sensor, its below is provided with positioning tube 11, positioning tube 11 belows are provided with bolt d12, and described bolt d12 matches positioning tube 11 and gas sensor 18 are fixed on the combined bay with the double-screw bolt b15 that is connected on being fixed on combined bay 2;
Described combined bay sidewall 19 is provided with installing hole 20.
During use, air entraining pipe is connected with feeder by bolt b7; Fixed electric potential electroanalysis formula gas sensor 18 is connected with control system by clamping screw 16, and the sensor below is provided with contact 17, is used for detected signal is transferred to control system.
The detection method of present embodiment gas sensing type safety guard: when fuel gas path was opened, the igniting pin was lighted ever-burning flame, and ever-burning flame is lighted main burner again.Along with flue gas in the ever-burning flame burning situation changes, promptly, oxygen progressively consumes, carbon monoxide and carbon dioxide progressively increase, gas reaches fixed electric potential electroanalysis formula gas sensor, working electrode generation oxidation or reduction reaction in electrolyte, and the equilibrium potential of electrode changes, changing value is directly proportional with gas concentration, but measure CO
2, CO, O
2Variation etc. gas concentration.When oxygen content is lower than 16% or carbon monoxide gas body burden when reaching 80ppm or carbon dioxide gas body burden and reaching 0.8%～1.5%; signal passes through the gas sensing system transmissions to control system; close fuel gas path, the combustion gas tool is quit work, thereby reach the effect of safeguard protection.
The described gas sensing type anoxia protection arrangement structure of present embodiment is described identical with embodiment 1, and difference is that described gas sensing device is a galvanic cell formula gas sensor.
The detection method of present embodiment gas sensing type safety guard: when fuel gas path was opened, the igniting pin was lighted ever-burning flame, and ever-burning flame is lighted main burner again.Along with flue gas in the ever-burning flame burning situation changes, promptly, oxygen progressively consumes, carbon monoxide and carbon dioxide progressively increase, and gas reaches galvanic cell formula gas sensor, gas when the electrolyte in anode and cathode generation redox reaction, make the anode metal ionization, discharge electronics, how many sizes of electric current is directly proportional with gas, but measure CO
2, CO, O
2Variation etc. gas concentration.When oxygen content is lower than 16% or carbon monoxide gas body burden when reaching 80ppm or carbon dioxide gas body burden and reaching 0.8%～1.5%; signal passes through the gas sensing system transmissions to control system; close fuel gas path, the combustion gas tool is quit work, thereby reach the effect of safeguard protection.
The described gas sensing type anoxia protection arrangement structure of present embodiment is described identical with embodiment 1, and difference is that described gas sensing device is the infrared type gas sensor.
The detection method of present embodiment gas sensing type safety guard: when fuel gas path was opened, the igniting pin was lighted ever-burning flame, and ever-burning flame is lighted main burner again.Along with flue gas in the ever-burning flame burning situation changes, promptly, oxygen progressively consumes, carbon monoxide and carbon dioxide progressively increase, gas reaches the infrared type gas sensor, gas has the characteristic that selectivity absorbs to the infrared radiation of different wave length, and its degree of absorption depends on the concentration of tested gas.For different molecular compounds, every kind of molecule can only absorb the infrared energy of a certain wave-length coverage, and promptly every kind of molecular compound all has one or several specific absorption frequency, is characteristic frequency, but measure CO
2, CO, O
2Variation etc. gas concentration.When oxygen content is lower than 16% or carbon monoxide gas body burden when reaching 80ppm or carbon dioxide gas body burden and reaching 0.8%～1.5%; signal passes through the gas sensing system transmissions to control system; close fuel gas path, the combustion gas tool is quit work, thereby reach the effect of safeguard protection.
Embodiment 4
The described gas sensing type anoxia protection arrangement structure of present embodiment is described identical with embodiment 1, and difference is that described gas sensing device is the chromatograph-type gas sensor.
The detection method of present embodiment gas sensing type safety guard: when fuel gas path was opened, the igniting pin was lighted ever-burning flame, and ever-burning flame is lighted main burner again.Along with flue gas in the ever-burning flame burning situation changes, promptly, oxygen progressively consumes, carbon monoxide and carbon dioxide progressively increase, gas reaches the chromatograph-type gas sensor, utilize chromatographic column that all components-oxygen, carbon monoxide, carbon dioxide separation in the flue gas are measured and the record The whole analytical process by detector and logger, calculate each components contents with area normalization then.When oxygen content is lower than 16% or carbon monoxide gas body burden when reaching 80ppm or carbon dioxide gas body burden and reaching 0.8%～1.5%; signal passes through the gas sensing system transmissions to control system; close fuel gas path, the combustion gas tool is quit work, thereby reach the effect of safeguard protection.
Claims (6)
1. gas sensing type anoxia protection arrangement, comprise nozzle, igniting pin, air entraining pipe and combined bay, described nozzle is located in the nozzle holder, the nozzle below connects seal nipple, the seal nipple other end is connected with air entraining pipe, nozzle and seal nipple are by being bolted to nozzle holder inside, and the nozzle holder top is provided with burner, and described nozzle holder is fixed on the combined bay; Be provided with ignitor in the described igniting pin, the igniting pin is provided with bolt, and described bolt matches the igniting pin is fixed on the combined bay with the double-screw bolt that is connected on being fixed on combined bay; Described combined bay sidewall is provided with installing hole; It is characterized in that: described anoxia protection arrangement also comprises gas sensor; Described gas sensor outer race is provided with positioning tube, and positioning tube below is provided with bolt, and described bolt matches positioning tube and gas sensor are fixed on the combined bay with the double-screw bolt that is connected on being fixed on combined bay.
2. gas sensing type anoxia protection arrangement according to claim 1 is characterized in that described gas sensor is an electrochemical gas sensor.
3. gas sensing type anoxia protection arrangement according to claim 1 and 2 is characterized in that described gas sensor is fixed electric potential electroanalysis formula gas sensor or galvanic cell formula gas sensor.
4. gas sensing type anoxia protection arrangement according to claim 1 is characterized in that described gas sensor is infrared type gas sensor or chromatograph-type gas sensor.
5. gas sensing type anoxia protection arrangement according to claim 4 is characterized in that described gas sensor is the chromatograph-type gas sensor; After the igniting pin was lighted ever-burning flame, ever-burning flame was lighted main burner again, and oxygen reduces, and carbon monoxide and carbon dioxide increase; Gas reaches the induction window of chromatograph-type gas sensor, utilize chromatographic column in the chromatograph-type gas sensor with oxygen, carbon monoxide, carbon dioxide separation, measure and the record The whole analytical process by detector and logger, calculate each components contents with area normalization then; When oxygen content is lower than 16% or carbon monoxide gas body burden when reaching 80ppm or carbon dioxide gas body burden and reaching 0.8%, signal by the gas sensing system transmissions to control system; Control system is closed combustion gas, and the combustion gas tool is quit work.
6. gas sensing type anoxia protection arrangement according to claim 1 is characterized in that described burner is arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710075345A CN101358743B (en) | 2007-07-31 | 2007-07-31 | Gas sensing type anoxia protection arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710075345A CN101358743B (en) | 2007-07-31 | 2007-07-31 | Gas sensing type anoxia protection arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101358743A CN101358743A (en) | 2009-02-04 |
| CN101358743B true CN101358743B (en) | 2010-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710075345A Expired - Fee Related CN101358743B (en) | 2007-07-31 | 2007-07-31 | Gas sensing type anoxia protection arrangement |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512056A (en) * | 2012-06-26 | 2014-01-15 | 宁波市比利仕燃器科技有限公司 | Performance control system of oxygen-deficit protection device suitable for various flue gas types and gas pressures |
| CN103512032B (en) * | 2012-06-26 | 2016-11-23 | 宁波市比利仕燃器科技有限公司 | A kind of oxygen deficit protective device structure being easily assembled |
| CN103323294B (en) * | 2013-07-05 | 2015-08-19 | 天津博益气动股份有限公司 | The protection system of gas sensor sampling outrange |
| CN105910141A (en) * | 2016-06-03 | 2016-08-31 | 孙永军 | Intelligent environment-friendly gas stove |
| CN106369638B (en) * | 2016-08-29 | 2019-01-22 | 珠海格力电器股份有限公司 | Gas-cooker and its control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2120283U (en) * | 1992-03-14 | 1992-10-28 | 陆华洋 | Safety automatic controller for gas range |
| CN1082179A (en) * | 1992-08-10 | 1994-02-16 | 张腾广 | Water heater anoxic protection method and device for automatically controlling |
| CN2283851Y (en) * | 1997-01-31 | 1998-06-10 | 北京市公用事业科学研究所 | Smoke reaction type content of oxygen detecting device |
| CN2421550Y (en) * | 2000-01-28 | 2001-02-28 | 南京斯奥欣电气具有限公司 | Anoxycausis protector |
| CN2484501Y (en) * | 2001-05-16 | 2002-04-03 | 南京斯奥欣电气具有限公司 | Light-operated oxygen-lack protection apparatus |
-
2007
- 2007-07-31 CN CN200710075345A patent/CN101358743B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2120283U (en) * | 1992-03-14 | 1992-10-28 | 陆华洋 | Safety automatic controller for gas range |
| CN1082179A (en) * | 1992-08-10 | 1994-02-16 | 张腾广 | Water heater anoxic protection method and device for automatically controlling |
| CN2283851Y (en) * | 1997-01-31 | 1998-06-10 | 北京市公用事业科学研究所 | Smoke reaction type content of oxygen detecting device |
| CN2421550Y (en) * | 2000-01-28 | 2001-02-28 | 南京斯奥欣电气具有限公司 | Anoxycausis protector |
| CN2484501Y (en) * | 2001-05-16 | 2002-04-03 | 南京斯奥欣电气具有限公司 | Light-operated oxygen-lack protection apparatus |
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| CN101358743A (en) | 2009-02-04 |
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Granted publication date: 20100526 Termination date: 20120731 |