CN101203073A - Method for detecting boiler dry burning - Google Patents
Method for detecting boiler dry burning Download PDFInfo
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- CN101203073A CN101203073A CNA2006101576131A CN200610157613A CN101203073A CN 101203073 A CN101203073 A CN 101203073A CN A2006101576131 A CNA2006101576131 A CN A2006101576131A CN 200610157613 A CN200610157613 A CN 200610157613A CN 101203073 A CN101203073 A CN 101203073A
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Abstract
The invention discloses a method for detecting if an empty pot is heated. The pot is provided with a vessel in which a heating element connected with a power supply is arranged. A temperature sensor is also arranged in the vessel and connected with a micro processing unit. The micro processing unit reads data of the temperature sensor and compares the data with the normal data. If the data is a certain amount higher than the normal data, the micro processing unit sends out control signal to cut off the power switch. Through the real time detection of temperature in the vessel, if the temperature is over the normal temperature, then the empty pot is heated, the micro processing unit sends out control signal to cut off the power switch so as to avoid danger caused by continual heating.
Description
[technical field]
The present invention relates to utilize temperature sensing device to stop heater to heat under improper situation, to guarantee the correct use of electric boiler, for example, container heats under anhydrous state.
[background technology]
Under the normal operation, be full of water in the container.But from the health angle, container will empty one and avoid liquid contamination before packing, alleviate traffic load simultaneously.In addition, under the situation that the liquid of making a fault is revealed, the liquid in the container be not full state yet.Under the above-mentioned situation, if can not control heating-up temperature well, will be because of the burning breaking out of fire.There are several safety devices in prior art, such as, thermostat and thermo-fuse are set to prevent burning, still generally in the boiler device, heat is slow from the process that heater propagates into safety device, causes heater burning before cutting off the electricity supply thus.
[summary of the invention]
Technical problem to be solved by this invention is to provide a kind of method for detecting boiler dry burning, can deenergization under the heating under anhydrous state, and to guarantee the correct use of electric boiler.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of method for detecting boiler dry burning is provided, boiler has a container, one heating element that is connected in power supply is set in the container, also has a temperature sensor in the container, temperature sensor connects a microprocessing unit, microprocessing unit reading temperature sensor data also compare with normal data, and as surpassing the certain amount of normal data, microprocessing unit sends the control signal switch of cutting off the electricity supply.
Further improvement in the technical proposal is:
Contain normal heating following heating time of situation and temperature data at the microprocessing unit internal memory, microprocessing unit reading temperature sensor data and normal data that should the time compare, if this certain amount of time normal temperature data of surpassing then send the control signal switch of cutting off the electricity supply.Reduce the initial heating electric energy, contain normal heating following heating time of situation and temperature data at the microprocessing unit internal memory, microprocessing unit reading temperature sensor data and normal data that should the time compare, if this certain amount of time normal temperature data of surpassing then send the control signal switch of cutting off the electricity supply.
Contain temperature rising ratio data under the normal heating situation at the microprocessing unit internal memory, microprocessing unit reading temperature sensor data and accounting temperature rising ratio, compare with normal temperature rising ratio data then, if surpass the certain amount of normal temperature rising ratio data then send the control signal switch of cutting off the electricity supply.
The invention has the beneficial effects as follows: because the present invention is provided with temperature sensor in heating container, temperature sensor connects a microprocessing unit, microprocessing unit reading temperature sensor data also compare with normal data, as surpassing normal data, microprocessing unit sends the control signal switch of cutting off the electricity supply.By temperature in the real-time detection receptacle, when surpassing normal condition, temperature illustrates promptly and has dry combustion method that microprocessing unit sends the control signal switch of cutting off the electricity supply immediately immediately then, has avoided continuing heating and has caused danger.
[description of drawings]
Fig. 1 is boiler overall structure figure;
Fig. 2 is water temperature and time changing curve figure in the boiler;
Fig. 3 is for reducing water temperature and time changing curve figure in the heat energy boiler.
Below in conjunction with accompanying drawing the present invention is described further:
[embodiment]
Fig. 1 is boiler overall structure figure, boiler comprises a container that usefulness is housed, one heating element that is connected in power supply is set in the container, also has a temperature sensor in the container, temperature sensor connects a microprocessing unit, microprocessing unit reading temperature sensor data also compare with normal data, and as surpassing normal data, microprocessing unit sends the control signal switch of cutting off the electricity supply.Usually, temperature has fluctuation, so only exceeding under certain amount situation, can judge just to belong to dry combustion method that this certain amount can draw by experiment.
Under the full of liquid normal heating situation, the curve negotiating heat transfer element that temperature rises in time detects in boiler, curve a among Fig. 2.Under improper situation, such as dry combustion method, temperature curve can be different, curve b among Fig. 2.Temperature curve is different because the structure of container is different, such as the geometry of container, the position of heating element, the position of thermistor.
For the boiler of an ad hoc structure, temperature sensing device is measured temperature curve in real time, just can determine whether dry combustion method by the curve under relatively more normal and the dry-fire condition.As shown in Figure 2, for example, when be 30 seconds heating time, temperature rises about 22 degrees centigrade under the normal condition, but under dry-fire condition, temperature can rise about 45 degrees centigrade, just can determine whether dry combustion method by more real-time detected temperature data, if determine to belong to dry combustion method, the microprocessor switch of can cutting off the electricity supply is as relay or controllable silicon.
Dump more early, the temperature that boiler reaches is just low more, the safe space of burning is just big more.But the temperature rising difference under the normal and dry combustion method two states may can't accurately be judged too for a short time.For this reason, can solve the burning problem by the method that reduces the initial heating electric energy, such as power reduces 2/3rds heating at the beginning.The examine time learns that state is normal later, can reply total power.As shown in Figure 3, when heating 60 seconds, about 15 degrees centigrade (seeing curve c) of temperature rising under the normal condition, temperature can rise 22 degrees centigrade (seeing curve d) under dry-fire condition, and this temperature difference is enough to judge, but this moment, temperature was low to moderate 57 degrees centigrade.
According to Fig. 2 as can be known, heat 10 seconds at first after, therefore temperature variation curve can determine whether dry combustion method by the method for rate of temperature change near linear.For example, in the range of linearity of Fig. 2, the temperature per second raises 0.6 degree centigrade under the normal condition, and the temperature per second rises about 3 degrees centigrade under dry-fire condition.Microprocessor constantly detects and accounting temperature rising ratio, if rate of rise of temperature surpasses the ratio of presetting, for example per 10 seconds 10 degrees centigrade, power supply promptly is disconnected.If the user is interrupted heating, the data difference that initial temperature is got with experiment, the method for serviceability temperature rate of change is more suitable in this case.
The most preferred embodiment of the above is intended to specify thinking of the present invention.The present invention's enforcement is not limited to the disclosed mode of above most preferred embodiment, and is all based on above-mentioned mentality of designing, simply deduces and replace, and the hot-drink making machine of the concrete tool distributor gear that obtains all belongs to enforcement of the present invention.
Claims (4)
1. method for detecting boiler dry burning, boiler has a container, one heating element that is connected in power supply is set in the container, it is characterized in that: also have a temperature sensor in the container, temperature sensor connects a microprocessing unit, microprocessing unit reading temperature sensor data also compare with normal data, and as surpassing the certain amount of normal data, microprocessing unit sends the control signal switch of cutting off the electricity supply.
2. method for detecting boiler dry burning as claimed in claim 1, it is characterized in that: contain normal heating following heating time of situation and temperature data at the microprocessing unit internal memory, microprocessing unit reading temperature sensor data and normal data that should the time compare, if this certain amount of time normal temperature data of surpassing then send the control signal switch of cutting off the electricity supply.
3. method for detecting boiler dry burning as claimed in claim 1, it is characterized in that: reduce the initial heating electric energy, contain normal heating following heating time of situation and temperature data at the microprocessing unit internal memory, microprocessing unit reading temperature sensor data and normal data that should the time compare, if this certain amount of time normal temperature data of surpassing then send the control signal switch of cutting off the electricity supply.
4. method for detecting boiler dry burning as claimed in claim 1, it is characterized in that: contain temperature rising ratio data under the normal heating situation at the microprocessing unit internal memory, microprocessing unit reading temperature sensor data and accounting temperature rising ratio, compare with normal temperature rising ratio data then, if surpass the certain amount of normal temperature rising ratio data then send the control signal switch of cutting off the electricity supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101576131A CN101203073A (en) | 2006-12-14 | 2006-12-14 | Method for detecting boiler dry burning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101576131A CN101203073A (en) | 2006-12-14 | 2006-12-14 | Method for detecting boiler dry burning |
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| CN101203073A true CN101203073A (en) | 2008-06-18 |
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| CNA2006101576131A Pending CN101203073A (en) | 2006-12-14 | 2006-12-14 | Method for detecting boiler dry burning |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011136664A1 (en) * | 2010-04-27 | 2011-11-03 | Fisher & Paykel Healthcare Limited | Water out alarm |
| CN103391646A (en) * | 2012-05-11 | 2013-11-13 | 四川汇利实业有限公司 | Medical raw material heater easy and convenient to manufacture |
| CN105650881A (en) * | 2014-11-28 | 2016-06-08 | 青岛经济技术开发区海尔热水器有限公司 | Water replenishing judging method of water heater |
| CN105698395A (en) * | 2014-11-28 | 2016-06-22 | 青岛经济技术开发区海尔热水器有限公司 | Water replenishment judging method for water heater |
| CN108742100A (en) * | 2018-05-25 | 2018-11-06 | 九阳股份有限公司 | A kind of food processor |
| CN109999307A (en) * | 2019-03-11 | 2019-07-12 | 北京怡和嘉业医疗科技股份有限公司 | A kind of detection method and device of humidifier dry-fire condition |
| CN111026197A (en) * | 2019-12-30 | 2020-04-17 | 广州华优电器有限公司 | Control method, system and terminal of intelligent electric cooker |
| AU2021266202B2 (en) * | 2010-04-27 | 2023-10-26 | Fisher & Paykel Healthcare Limited | Water out alarm |
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2006
- 2006-12-14 CN CNA2006101576131A patent/CN101203073A/en active Pending
Cited By (22)
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|---|---|---|---|---|
| US10532178B2 (en) | 2010-04-27 | 2020-01-14 | Fisher & Paykel Healthcare Limited | Water out alarm |
| CN103037926B (en) * | 2010-04-27 | 2016-06-29 | 费雪派克医疗保健有限公司 | Water Out alarm |
| CN106039518A (en) * | 2010-04-27 | 2016-10-26 | 费雪派克医疗保健有限公司 | Water out alarm |
| WO2011136664A1 (en) * | 2010-04-27 | 2011-11-03 | Fisher & Paykel Healthcare Limited | Water out alarm |
| AU2011245770B2 (en) * | 2010-04-27 | 2015-01-22 | Fisher & Paykel Healthcare Limited | Water out alarm |
| AU2021266202B2 (en) * | 2010-04-27 | 2023-10-26 | Fisher & Paykel Healthcare Limited | Water out alarm |
| GB2492038A (en) * | 2010-04-27 | 2012-12-19 | Fisher & Paykel Healthcare Ltd | Water out alarm |
| CN106039518B (en) * | 2010-04-27 | 2020-01-10 | 费雪派克医疗保健有限公司 | Water shortage alarm |
| US11679227B2 (en) | 2010-04-27 | 2023-06-20 | Fisher & Paykel Healthcare Limited | Water out alarm |
| GB2492038B (en) * | 2010-04-27 | 2016-08-10 | Fisher & Paykel Healthcare Ltd | Water out alarm |
| US11957844B2 (en) | 2010-04-27 | 2024-04-16 | Fisher & Paykel Healthcare Limited | Water out alarm |
| CN103037926A (en) * | 2010-04-27 | 2013-04-10 | 费雪派克医疗保健有限公司 | Water Out alarm |
| US9393379B2 (en) | 2010-04-27 | 2016-07-19 | Fisher & Paykel Healthcare Limited | Water out alarm |
| CN103391646A (en) * | 2012-05-11 | 2013-11-13 | 四川汇利实业有限公司 | Medical raw material heater easy and convenient to manufacture |
| CN105698395A (en) * | 2014-11-28 | 2016-06-22 | 青岛经济技术开发区海尔热水器有限公司 | Water replenishment judging method for water heater |
| CN105698395B (en) * | 2014-11-28 | 2019-11-05 | 青岛经济技术开发区海尔热水器有限公司 | A kind of water heater moisturizing judgment method |
| CN105650881A (en) * | 2014-11-28 | 2016-06-08 | 青岛经济技术开发区海尔热水器有限公司 | Water replenishing judging method of water heater |
| CN108742100A (en) * | 2018-05-25 | 2018-11-06 | 九阳股份有限公司 | A kind of food processor |
| CN109999307B (en) * | 2019-03-11 | 2022-04-08 | 北京怡和嘉业医疗科技股份有限公司 | Method and device for detecting dry-burning state of humidifier |
| CN109999307A (en) * | 2019-03-11 | 2019-07-12 | 北京怡和嘉业医疗科技股份有限公司 | A kind of detection method and device of humidifier dry-fire condition |
| CN111026197A (en) * | 2019-12-30 | 2020-04-17 | 广州华优电器有限公司 | Control method, system and terminal of intelligent electric cooker |
| CN111026197B (en) * | 2019-12-30 | 2021-05-25 | 广州华优电器有限公司 | Control method, system and terminal of intelligent electric cooker |
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Open date: 20080618 |