CN103196235A - Automatic alarm method of domestic gas water heater - Google Patents
Automatic alarm method of domestic gas water heater Download PDFInfo
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- CN103196235A CN103196235A CN2013101313780A CN201310131378A CN103196235A CN 103196235 A CN103196235 A CN 103196235A CN 2013101313780 A CN2013101313780 A CN 2013101313780A CN 201310131378 A CN201310131378 A CN 201310131378A CN 103196235 A CN103196235 A CN 103196235A
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Abstract
The invention relates to an automatic alarm method of a domestic gas water heater. The method includes: a controller, a gas detector, a carbon monoxide concentration detection device and an infrared human body detection sensor are attached onto a main device of the domestic gas water heater, the controller is connected with the gas detector, the carbon monoxide concentration detection device and the infrared human body detection sensor and judges whether to perform gas alarm or not according to detection results of the gas detector, the carbon monoxide concentration detection device and the infrared human body detection sensor, and the main device comprises a shell, a burner, a water inlet pipe, a water outlet pipe, a draught flue and a heat exchanger. By the method, insufficiency of gas burning and gas concentration in indoor gas can be detected, gas alarm information is transmitted to residents timely to facilitate measure taking of the residents, potential safety hazards of gas explosion and carbon monoxide poisoning can be avoided, personal and property safety of people is guaranteed.
Description
Technical field
The present invention relates to a kind of domestic gas-fired water heater automatic alarm method, relate in particular to and a kind ofly can determine whether the domestic gas-fired water heater automatic alarm method of reporting to the police according to the gas leak situation for indoor, when the inhabitation people is not concerned about gas leak or inhabitation people not when indoor indoor, can analyze coal gas imperfect combustion situation and indoor gas concentration automatically, and actively seek solution, ensured the safety of house property and the person.
Background technology
The basic functional principle of gas heater is that cold water enters water heater; the aqueous vapor of flowing through linkage valve is under the certain pressure difference effect of circulating water; promote aqueous vapor interlock valve; and promote the dc source microswitch simultaneously with power connection and starting impulse igniter; meanwhile open combustion gas gas transmission electromagnetic valve; continue automatically igniting again by pulse igniter; till successfully entering normal operating conditions up to lighting a fire; this process is kept 5～10 second time approximately continuously; when gas heater lack of water or hydraulic pressure deficiency occur in the course of work or ignition process; short of electricity; lack combustion gas; the hot water temperature is too high; when accident is put out phenomena of the failure such as fire; pulse igniter will be by detecting the signal of inductive needle feedback; automatically cut off the electricity supply; reply original normally close valve state at once under the situation that the short of electricity of combustion gas gas transmission electromagnetic valve is supplied with; that is to say and cut off fuel gas path this moment, close gas heater and play the safeguard protection effect.A common qualified gas heater, refer to that every performance indications meet the gas heater that GB6932-2001 " domestic gas instantaneous water heater " national standard requires, be Automatic Control from fired state to the whole process that enters normal operating conditions, need not artificial the adjustment or additional the setting, as long as open cold water switch or connect cold water source, obtain the suitable water yield and water temperature by water-quantity regulating device and air volume regulating device adjusting, gas heater just entered normal operating conditions at once in 5～10 seconds short time, while output hot water, in case above chance failure occurs, gas heater will quit work in 10 seconds automatically, and cut off fuel gas path at once, prevent that combustion gas from continuing to flow out, and can not open again automatically, unless restart gas heater again after getting rid of above fault artificially, can normal operating conditions, therefore, its service behaviour is safer reliable.
But, the common blow-by in the combustion chamber of existing gas heater, water heater is used for indoor, needed oxygen is also taken from indoor during the water heater burning, the waste gas that produces of burning by flue discharged to outdoor, so water heater can not be installed in the bathroom, natural inflow during simultaneously because of burning, combustion gas and air mix not exclusively, have influenced the thermal efficiency, and imperfect combustion also can produce carbon monoxide, cause indoor inhabitation people to poison, or behind the gas leakage and oxygen mix, set off an explosion easily, bring hidden danger all can for the person and property safety.
Therefore, need a kind of for indoor domestic gas-fired water heater automatic alarm method, in time detect gas leakage situation and carbonomonoxide concentration in the indoor environment, determine whether and to report to the police to the inhabitation people, take measures, as window, die, the guarantee room air is fresh, stop potential safety hazard, simultaneously, whether determine whether passing through audible alarm indoor according to the inhabitation people, still by wireless network warning message is sent to not on indoor people's mobile phone, guarantee the timely transmission of warning message.
Summary of the invention
In order to address the above problem, the invention provides a kind of for indoor domestic gas-fired water heater automatic alarm method, make the user needn't guarantee the concern to room air constantly, need not oneself observe gas leakage and carbonomonoxide concentration problem in the room air, in time warn, thereby improve indoor environment, ensured the person and property safety.
According to an aspect of the present invention, provide a kind of for indoor domestic gas-fired water heater automatic alarm method, comprise controller and coal gas survey meter, the carbonomonoxide concentration checkout gear, the infrared human body acquisition sensor is attached on the agent set of domestic gas-fired water heater, controller connects the coal gas survey meter respectively, the carbonomonoxide concentration checkout gear, the infrared human body acquisition sensor, described controller is according to the coal gas survey meter, the carbonomonoxide concentration checkout gear, the testing result of infrared human body acquisition sensor judges whether to carry out gas alarm, wherein, described agent set comprises shell, burner, water inlet pipe, outlet pipe, exhaust uptake and heat exchanger.
More specifically, described domestic gas-fired water heater automatic alarm method further comprises: be installed in the coal gas survey meter on the burner, survey whether gas leak takes place when described domestic gas-fired water heater is worked; The use of carbonomonoxide concentration checkout gear carries asepwirator pump suction indoor gas and measures, with the carbonomonoxide concentration in the sensing chamber; The infrared human body acquisition sensor adopts passive type infrared human body detection mode, whether has human body in the detecting chamber; Controller receives the testing result of coal gas survey meter, carbonomonoxide concentration checkout gear and infrared human body acquisition sensor respectively, when the coal gas survey meter detects gas leak or the carbonomonoxide concentration checkout gear detects indoor carbonomonoxide concentration value greater than 20mg/m
3The time, send the gas alarm signal, and survey the result of indoor human body according to the infrared human body acquisition sensor, carry out the gas alarm operation, when the coal gas survey meter does not detect gas leak or the carbonomonoxide concentration checkout gear detects indoor carbonomonoxide concentration value less than 20mg/m
3The time, send the coal gas normal signal; Wherein, described domestic gas-fired water heater automatic alarm method also comprises, after the family expenses gas heater starts, uses the cell apparatus in the shell that is installed in described domestic gas-fired water heater, to each device power supply of described domestic gas-fired water heater; Wherein, the described result who surveys indoor human body according to the infrared human body acquisition sensor, carrying out the gas alarm operation comprises, when hot outer human body acquisition sensor detects indoor human body, use the speech play module from memory, to read the auditory tone cues file corresponding with gas alarm and play described auditory tone cues file, when hot outer human body acquisition sensor does not detect indoor human body, use the RFDC module by cordless communication network the gas alarm message to be sent to purpose network or purpose mobile phone; Wherein, carbonomonoxide concentration checkout gear, infrared human body acquisition sensor and RFDC module can be positioned on the shell of agent set, cell apparatus, controller, memory and speech play module can be positioned in the shell of agent set.
More specifically, described domestic gas-fired water heater automatic alarm method further comprises: described RFDC module can be GPRS data communication units or 3G data communication units, described purpose network is local safety management network, and described purpose mobile phone is house inhabitation people's mobile phone.
More specifically, described domestic gas-fired water heater automatic alarm method further comprises: when described water inlet pipe is intake, start gas heater, when described outlet pipe was closed, gas heater quit work.
More specifically, described domestic gas-fired water heater automatic alarm method further comprises: the side wall of outer shell at gas heater can be offered louver(-vre), can offer observation window with the burner corresponding position on described shell.
Description of drawings
Below with reference to accompanying drawing embodiment of the present invention are described, wherein:
The flow chart of the domestic gas-fired water heater automatic alarm method that Fig. 1 illustrates according to an embodiment of the present invention.
The specific embodiment
Embodiment to domestic gas-fired water heater automatic alarm method of the present invention is elaborated below with reference to accompanying drawings.
Fig. 1 illustrates the flow chart of the domestic gas-fired water heater automatic alarm method that illustrates according to an embodiment of the present invention.Wherein being used to indoor domestic gas-fired water heater automatic alarm method comprises: with controller and coal gas survey meter, the carbonomonoxide concentration checkout gear, the infrared human body acquisition sensor is attached on the agent set of domestic gas-fired water heater, controller connects the coal gas survey meter respectively, the carbonomonoxide concentration checkout gear, the infrared human body acquisition sensor, described controller is according to the coal gas survey meter, the carbonomonoxide concentration checkout gear, the testing result of infrared human body acquisition sensor judges whether to carry out gas alarm, wherein, described agent set comprises shell, burner, water inlet pipe, outlet pipe, exhaust uptake and heat exchanger.Described controller judges whether to carry out gas alarm according to the testing result of coal gas survey meter, carbonomonoxide concentration checkout gear, infrared human body acquisition sensor and specifically comprises, be installed in the coal gas survey meter on the burner, survey whether gas leak takes place when described domestic gas-fired water heater is worked; The use of carbonomonoxide concentration checkout gear carries asepwirator pump suction indoor gas and measures, with the carbonomonoxide concentration in the sensing chamber; The infrared human body acquisition sensor adopts passive type infrared human body detection mode, whether has human body in the detecting chamber; Controller receives the testing result of coal gas survey meter, carbonomonoxide concentration checkout gear and infrared human body acquisition sensor respectively, when the coal gas survey meter detects gas leak or the carbonomonoxide concentration checkout gear detects indoor carbonomonoxide concentration value greater than 20mg/m
3The time, send the gas alarm signal, and survey the result of indoor human body according to the infrared human body acquisition sensor, carry out the gas alarm operation, when the coal gas survey meter does not detect gas leak or the carbonomonoxide concentration checkout gear detects indoor carbonomonoxide concentration value less than 20mg/m
3The time, send the coal gas normal signal; Wherein, described domestic gas-fired water heater automatic alarm method also comprises, after the family expenses gas heater starts, uses the cell apparatus in the shell that is installed in described domestic gas-fired water heater, to each device power supply of described domestic gas-fired water heater; Wherein, the described result who surveys indoor human body according to the infrared human body acquisition sensor, carrying out the gas alarm operation comprises, when hot outer human body acquisition sensor detects indoor human body, use the speech play module from memory, to read the auditory tone cues file corresponding with gas alarm and play described auditory tone cues file, when hot outer human body acquisition sensor does not detect indoor human body, use the RFDC module by cordless communication network the gas alarm message to be sent to purpose network or purpose mobile phone; Wherein, carbonomonoxide concentration checkout gear, infrared human body acquisition sensor and RFDC module can be positioned on the shell of agent set, cell apparatus, controller, memory and speech play module can be positioned in the shell of agent set.
Wherein, the infrared human body acquisition sensor adopts passive type infrared human body detection mode, whether has human body in the detecting chamber.At occurring in nature, any when being higher than absolute temperature (273 degree) object all will produce infrared spectrum, the object of different temperatures, the wavelength of the infrared energy of its release is different, therefore, infrared wavelength is relevant with the height of temperature.According to this characteristic as can be known, human body also is a hot body, human body has constant body temperature, generally at 36 to 37 degree, thus the infrared ray of about 7 to 10 microns of specific wavelengths can be sent, according in a characteristic, the infrared sensor that can produce corresponding wave band sensitivity is surveyed the existence of human body, because gas heater itself is a heater, but its stable be not 36 to 37 constant degree, therefore can use infrared ray to determine the existence of human body.Described passive infrared sensor is to carry out work by about 10 microns infrared ray of human body emission.About 10 microns infrared ray of human body emission focuses on the infrared induction source after strengthening by your optical filter of luxuriant and rich with fragrance mud.The pyroelectricity element is adopted in the infrared induction source usually, and this element can lose charge balance when the human infrared radiation temperature changes receiving, and outwards discharges electric charge, and subsequent conditioning circuit is handled the back and just can be produced detection signal by detecting.
In addition, described domestic gas-fired water heater automatic alarm method further comprises: described RFDC module can be GPRS data communication units or 3G data communication units, described purpose network is local safety management network, and described purpose mobile phone is house inhabitation people's mobile phone.As in indoor carbonomonoxide concentration value greater than 20mg/m
3The time, since carbon monoxide be colorless and odorless non-irritating other, people are difficult to the very first time by the thoughts and feelings of self, at this moment by audible alarm prompting people, perhaps in the infrared sensor sensing chamber nobody the time, carbon monoxide is exceeded standard and concrete carbonomonoxide concentration sends on the inhabitation people mobile phone, be convenient to related personnel's Emergency Assistance, thereby ensured rescue time.
Wherein, (carbon monoxide, CO) pure product are colourless, odorless, non-irritating gas to carbon monoxide.Molecular weight 28.01, density 1.250g/l, freezing point is-207 ℃, boiling point-190 ℃.Solubility in water is very low, but is soluble in ammoniacal liquor.The air mixed explosion limit is 12.5%～74%.Carbon monoxide enter after the human body can and blood in the hemoglobin combination, and then make hemoglobin can not with combination with oxygen, thereby cause that anoxic appears in body tissue, cause human body death by suffocation.Therefore carbon monoxide has toxicity.Carbon monoxide is colourless, odorless, tasteless gas, causes poisoning so be easy to ignore.The maximum permissible concentration of carbon monoxide: 20mg/m
3The carbon monoxide acute poisoning, according to clinical manifestation can be divided into slightly, three grades of moderate and severes.Calomel poisoning shows as dizziness, dim eyesight, severe headache, tinnitus, temples constriction and pulsatory feeling, nauseating, vomiting, palpitaition, weakness of limbs is still arranged, but do not have stupor.It is on-the-spot break away to poison, and after sucking fresh air or suitably treating, symptom can rapidly disappear.Moderate intoxication also shows as initial stage hidrosis, agitation, instability of gait, skin and mucosal pallor except above-mentioned symptom, and along with poisoning increases the weight of and cherry-red occurs, the most obvious with cheek shirtfront and femoribus internus, haziness even stupor.If can in time rescue, can revive very soon, generally not have significant complications and supervention disease.Severe intoxication is except the symptom with part or all moderate intoxication, and the patient can enter comatose state in various degree rapidly, and the time can last for hours to round the clock several, teeth clenched, tetanic property whole body spasm, gatism and pathologic reflex often occur.Toxic encephalopathy, myocarditis, suction human nature pneumonia, pulmonary edema and electrolyte disturbance etc. often occur together.In addition, a series of signs of a brain damage can occur, as body temperature rising, perspiration, leukocytosis, blood sugar rising, glycosuria, albuminuria etc., can occur also in the blood that lactic acid increases and lactic acid dehydrogenase activity such as increases at biochemical change.Brain wave is unusual, shows as the wave amplitude step-down during severe.Pump suction type carbonmonoxide detector of the present invention is a kind of single gas or multiple gases detection alarm instrument of planting that can flexible configuration, and it can be equipped with oxygen sensor, combustible gas sensor and toxic gas sensor or optional four kinds of gas sensors or optional single gas sensor of planting.
In addition, described domestic gas-fired water heater automatic alarm method further comprises: when described water inlet pipe is intake, start gas heater, when described outlet pipe was closed, gas heater quit work.Wherein the basic structure of gas heater mainly is made up of valve body assembly, main burner, small fire burner, heat exchanger, safety device etc., and it also comprises the forced-ventilated device of Flue Gas Water Heater flue, forced-ventilated water heater.Valve body assembly is being controlled the working procedure of whole water heater, and it comprises water valve, air valve, microswitch and igniter etc.When water heater is installed, all should mounted valve on water inlet pipe, outlet pipe, the Gas Pipe.When using water heater, open gas valve and water intaking valve earlier.When opening outlet valve, little fire is lighted in igniter and microswitch control earlier, refires main fire.The water heater that has is not established little fire, can directly light main fire.Combustion gas is in the combustion chamber internal combustion, and heat heats water by heat exchanger, and hot water flows out continually from delivery port.Turn-off outlet valve, water heater quits work.
In addition, described domestic gas-fired water heater automatic alarm method further comprises: the side wall of outer shell at gas heater can be offered louver(-vre), on described shell, can offer observation window with the burner corresponding position, so that gas heater ventilation and convenient for maintaining personnel and user observe the gas heater inner case, in time take measures.
Adopt domestic gas-fired water heater automatic alarm method of the present invention, realized real-time detection and the warning of indoor gas, the specific targets in the described gas comprise coal gas and carbon monoxide.Under the too high situation of the appearance gas leakage of indoor environment or carbonomonoxide concentration, in time notify the related personnel to give first aid to, mode such as take to window or die keeps the unimpeded of indoor gas and upgrades.One convenience has made things convenient for the monitoring of indoor occupant to environment inside car, and another is convenient, also can be in time under indoor unmanned situation the warning message of coal gas and carbon monoxide be sent on the inhabitation people mobile phone, has avoided hazard to person and property loss.
Be understandable that though the present invention with the preferred embodiment disclosure as above, yet above-described embodiment is not in order to limit the present invention.For any those of ordinary skill in the art, do not breaking away under the technical solution of the present invention scope situation, all can utilize the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention according to any simple modification, equivalent variations and the modification that technical spirit of the present invention is done above embodiment, all still belongs in the scope of technical solution of the present invention protection.
Claims (5)
1. domestic gas-fired water heater automatic alarm method comprises:
Controller and coal gas survey meter, carbonomonoxide concentration checkout gear, infrared human body acquisition sensor are attached on the agent set of domestic gas-fired water heater, controller connects coal gas survey meter, carbonomonoxide concentration checkout gear, infrared human body acquisition sensor respectively, described controller judges whether to carry out gas alarm according to the testing result of coal gas survey meter, carbonomonoxide concentration checkout gear, infrared human body acquisition sensor, wherein, described agent set comprises shell, burner, water inlet pipe, outlet pipe, exhaust uptake and heat exchanger.
2. domestic gas-fired water heater automatic alarm method as claimed in claim 1 further comprises:
Be installed in the coal gas survey meter on the burner, survey whether gas leak takes place when described domestic gas-fired water heater is worked;
The use of carbonomonoxide concentration checkout gear carries asepwirator pump suction indoor gas and measures, with the carbonomonoxide concentration in the sensing chamber;
The infrared human body acquisition sensor adopts passive type infrared human body detection mode, whether has human body in the detecting chamber;
Controller receives the testing result of coal gas survey meter, carbonomonoxide concentration checkout gear and infrared human body acquisition sensor respectively, when the coal gas survey meter detects gas leak or the carbonomonoxide concentration checkout gear detects indoor carbonomonoxide concentration value greater than 20mg/m
3The time, send the gas alarm signal, and survey the result of indoor human body according to the infrared human body acquisition sensor, carry out the gas alarm operation, when the coal gas survey meter does not detect gas leak or the carbonomonoxide concentration checkout gear detects indoor carbonomonoxide concentration value less than 20mg/m
3The time, send the coal gas normal signal;
Wherein, described domestic gas-fired water heater automatic alarm method also comprises, after the family expenses gas heater starts, uses the cell apparatus in the shell that is installed in described domestic gas-fired water heater, to each device power supply of described domestic gas-fired water heater;
Wherein, the described result who surveys indoor human body according to the infrared human body acquisition sensor, carrying out the gas alarm operation comprises, when hot outer human body acquisition sensor detects indoor human body, use the speech play module from memory, to read the auditory tone cues file corresponding with gas alarm and play described auditory tone cues file, when hot outer human body acquisition sensor does not detect indoor human body, use the RFDC module by cordless communication network the gas alarm message to be sent to purpose network or purpose mobile phone;
Wherein, carbonomonoxide concentration checkout gear, infrared human body acquisition sensor and RFDC module are positioned on the shell of agent set, cell apparatus, controller, memory and speech play module are positioned in the shell of agent set.
3. domestic gas-fired water heater automatic alarm method as claimed in claim 2 further comprises:
Described RFDC module is GPRS data communication units or 3G data communication units, and described purpose network is local safety management network, and described purpose mobile phone is house inhabitation people's mobile phone.
4. domestic gas-fired water heater automatic alarm method as claimed in claim 3 further comprises:
When described water inlet pipe is intake, start gas heater, when described outlet pipe was closed, gas heater quit work.
5. domestic gas-fired water heater automatic alarm method as claimed in claim 1 further comprises:
Side wall of outer shell at gas heater is offered louver(-vre), offers observation window with the burner corresponding position on described shell.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310131378.0A CN103196235B (en) | 2013-04-17 | 2013-04-17 | Domestic gas-fired water heater automatic alarm method |
| CN201510137671.7A CN104748396B (en) | 2013-04-17 | 2013-04-17 | Domestic gas-fired water heater automatic alarm method |
| CN201510134092.7A CN104792016B (en) | 2013-04-17 | 2013-04-17 | Domestic gas-fired water heater automatic alarm method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310131378.0A CN103196235B (en) | 2013-04-17 | 2013-04-17 | Domestic gas-fired water heater automatic alarm method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510134092.7A Division CN104792016B (en) | 2013-04-17 | 2013-04-17 | Domestic gas-fired water heater automatic alarm method |
| CN201510137671.7A Division CN104748396B (en) | 2013-04-17 | 2013-04-17 | Domestic gas-fired water heater automatic alarm method |
Publications (2)
| Publication Number | Publication Date |
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| CN103196235A true CN103196235A (en) | 2013-07-10 |
| CN103196235B CN103196235B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310131378.0A Expired - Fee Related CN103196235B (en) | 2013-04-17 | 2013-04-17 | Domestic gas-fired water heater automatic alarm method |
| CN201510134092.7A Expired - Fee Related CN104792016B (en) | 2013-04-17 | 2013-04-17 | Domestic gas-fired water heater automatic alarm method |
| CN201510137671.7A Active CN104748396B (en) | 2013-04-17 | 2013-04-17 | Domestic gas-fired water heater automatic alarm method |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510134092.7A Expired - Fee Related CN104792016B (en) | 2013-04-17 | 2013-04-17 | Domestic gas-fired water heater automatic alarm method |
| CN201510137671.7A Active CN104748396B (en) | 2013-04-17 | 2013-04-17 | Domestic gas-fired water heater automatic alarm method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748394A (en) * | 2015-03-03 | 2015-07-01 | 芜湖美的厨卫电器制造有限公司 | Gas water heater safety protection system and gas water heater |
| CN111161510A (en) * | 2020-01-03 | 2020-05-15 | 上海安宏建设工程有限公司 | Automatic alarm device for household gas leakage |
| CN111397214A (en) * | 2019-01-03 | 2020-07-10 | 芜湖美的厨卫电器制造有限公司 | Gas water heater and control method thereof |
| CN112113342A (en) * | 2020-08-25 | 2020-12-22 | 芜湖美的厨卫电器制造有限公司 | Water heater and method, device and machine readable storage medium thereof |
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| CA2127804C (en) * | 1992-11-26 | 1999-09-28 | Toshinori Sugimoto | Antitheft system and antitheft apparatus |
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| CN201028634Y (en) * | 2007-03-19 | 2008-02-27 | 谢忠谚 | Bidirectional wireless radio controller used for gas water heater or gas fireplace |
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- 2013-04-17 CN CN201310131378.0A patent/CN103196235B/en not_active Expired - Fee Related
- 2013-04-17 CN CN201510134092.7A patent/CN104792016B/en not_active Expired - Fee Related
- 2013-04-17 CN CN201510137671.7A patent/CN104748396B/en active Active
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| US5807098A (en) * | 1996-04-26 | 1998-09-15 | Desa International, Inc. | Gas heater with alarm system |
| CN2420579Y (en) * | 2000-05-22 | 2001-02-21 | 申忠玉 | Human safety protector for water heater |
| CN201368594Y (en) * | 2009-01-20 | 2009-12-23 | 海尔集团公司 | Carbon monoxide alarm device for gas water heater |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748394A (en) * | 2015-03-03 | 2015-07-01 | 芜湖美的厨卫电器制造有限公司 | Gas water heater safety protection system and gas water heater |
| CN104748394B (en) * | 2015-03-03 | 2019-03-22 | 芜湖美的厨卫电器制造有限公司 | Gas heater safety system and gas heater |
| CN111397214A (en) * | 2019-01-03 | 2020-07-10 | 芜湖美的厨卫电器制造有限公司 | Gas water heater and control method thereof |
| CN111161510A (en) * | 2020-01-03 | 2020-05-15 | 上海安宏建设工程有限公司 | Automatic alarm device for household gas leakage |
| CN111161510B (en) * | 2020-01-03 | 2021-06-01 | 上海安宏建设工程有限公司 | Automatic alarm device for household gas leakage |
| CN112113342A (en) * | 2020-08-25 | 2020-12-22 | 芜湖美的厨卫电器制造有限公司 | Water heater and method, device and machine readable storage medium thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104792016A (en) | 2015-07-22 |
| CN104748396A (en) | 2015-07-01 |
| CN103196235B (en) | 2015-08-19 |
| CN104792016B (en) | 2016-04-20 |
| CN104748396B (en) | 2017-12-12 |
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