CN105011752A - Electric kettle with automatically opening and closing lid based on rate of water temperature change - Google Patents

Electric kettle with automatically opening and closing lid based on rate of water temperature change Download PDF

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Publication number
CN105011752A
CN105011752A CN201510372566.1A CN201510372566A CN105011752A CN 105011752 A CN105011752 A CN 105011752A CN 201510372566 A CN201510372566 A CN 201510372566A CN 105011752 A CN105011752 A CN 105011752A
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CN
China
Prior art keywords
water
lid
automatic shutter
change
electric kettle
Prior art date
Application number
CN201510372566.1A
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Chinese (zh)
Inventor
黄继昌
Original Assignee
黄继昌
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Publication date
Application filed by 黄继昌 filed Critical 黄继昌
Priority to CN201510372566.1A priority Critical patent/CN105011752A/en
Publication of CN105011752A publication Critical patent/CN105011752A/en

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Abstract

The invention discloses an electric kettle with an automatically opening and closing lid based on rate of water temperature change, comprising a kettle body, an automatically opening and closing lid mechanism, a single chip microcomputer, an electronic switch, a power supply and a temperature sensor. The kettle body comprises a lid and a heating resistor. The single chip microcomputer comprises a temperature acquisition module, a boiling judging module and a control module. Boiling state of the water in the kettle is judged by the boiling judging module based on the rate of water temperature change. If the water is judged as in the boiling state by the boiling judging module, the lid will be opened by the automatically opening and closing lid mechanism controlled by the control module. After a preset period of time, the electronic switch is turned off and the lid is closed by the automatically opening and closing lid mechanism controlled by the control module. The invention proposes an effective method to judge the boiling state of water in an electric kettle. And by use of the automatically opening and closing lid mechanism, the lid is opened automatically after boiling and the water is kept heated for a preset period of time and then the lid is closed automatically. In this way, hazardous substance in water is fully volatilized and water quality is improved.

Description

Based on the automatic shutter lid electric kettle that water temperature rate of change controls
Technical field
The present invention relates to living electric apparatus electric kettle field, be specifically related to the automatic shutter lid electric kettle controlled based on water temperature rate of change.
Background technology
Electric kettle has slowly become the instrument boiled water of average family, electric kettle is simple to operate, safe and reliable, only running water need be connected in kettle body, then be placed in power source base by the kettle body that running water is housed, power switch of performing fighting, electric kettle just starts the water in heating kettle body, after water boiling, power supply disconnects automatically.Electric kettle is subject to general the liking of people.
Existing market has various electric kettle, the base that its most of electric kettle comprises kettle body and is arranged at bottom kettle body, kettle body is provided with handle, is provided with temperature detect switch (TDS) in the handle.Described temperature detect switch (TDS) adopts mechanical jet-propelled shell fragment principle of expanding with heat and contracting with cold mode and forming, and in use, if existing electric kettle poach opens the air pressure of rear kettle body or temperature because leaking, do not stop after easily causing temperature detect switch (TDS) not automatic trip or water to be opened for a long time.If temperature detect switch (TDS) remained on surface water or in wet condition in handle, makes 220 volts of High Level AC Voltages be delivered to handle by the temperature detect switch (TDS) of handle inner, electric leakage and chargedly to hurt sb.'s feelings when causing easily using.
Traditional electric kettle judges and controls that the method that water seethes with excitement is the steam cock utilizing bimetal leaf to make, enough water vapours to be had to make steam cock action and cut off heating power supply after water boiling, the weak point of this kind of method existence is: enter steam cock owing to will there be enough water vapours, add the mechanism of steam channel and motion, limit overall appearance shape-designing, and sensitive not during cut-out heating power supply after water boiling.The electric kettle of prior art judges that the another kind of method that water seethes with excitement adopts sensor measurement water temperature, and when the water temperature in electric kettle reaches the water temperature of water boiling of setting, control circuit cuts off heating power supply, realizes water boiling power-off and controls.The deficiency that this method exists is: in higher height above sea level, the water boiling temperature also not reaching setting even if water has seethed with excitement, and heating power supply continues heating, there is the hidden danger of security incident.In addition, generally owing to surveying the existence of error of the sensor of water temperature, very easily producing that water seethes with excitement can't the phenomenon of power-off or water not boiling and power-off.
In addition, if steam cock lost efficacy, the water in kettle can burn down always, until water is dryouied, temperature of heating elements sharply rises, and being positioned at has two bimetal leafs bottom heat-generating disc, can because conduction of heat temperature sharply rise, dilatancy, deenergization.Therefore existing electric kettle generally can play auto-breaking, does not reheat and prevent the triple safe of dry combustion method from protecting after power-off.
Existing electric kettle Problems existing is as follows: very short to the time of auto-breaking after water is boiled, and the pot lid of electric kettle is all closed state.Therefore water now is also in and does not have thoroughly boiled water.Research prove, halogenated hydrocarbons, chloroform content and water temperature change and duration length of seething with excitement closely related.When water temperature reaches 90 DEG C, halogenated hydrocarbons content rises to 191 micrograms by original often liter 53 micrograms, and chloroform rises to 177 micrograms by often liter of 43.8 micrograms, all exceedes national standard 2 times.When water temperature is raised to 100 DEG C, the content of halogenated hydrocarbons and chloroform drops to 110 micrograms and 99 micrograms respectively, still exceedes national standard.If continue boiling, continue after 3 minutes, halogenated hydrocarbons and chloroform content are down to 9.2 micrograms and 8.3 micrograms respectively, now just become safe drinking water.
For the above-mentioned defect existed in currently available technology, be necessary to study, to provide a kind of scheme, solve the defect that in prior art, steam cock exists, make electric kettle in the process of automatic water boiler, automatically can open pot lid when water seethes with excitement, and automatically close pot lid after pot lid continues to open a period of time.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of automatic shutter lid electric kettle controlled based on water temperature rate of change,
Comprise hot-water bottle body, automatic shutter lid mechanism, single-chip microcomputer, electronic switch, power supply and temperature sensor, described hot-water bottle body comprises pot lid and heating resistor, wherein,
One end of described electronic switch is for connecting external power supply, and the other end connects described heating resistor;
Described power supply connects described temperature sensor and single-chip microcomputer respectively;
Described single-chip microcomputer comprises temperature collect module, boiling judge module and control module, described temperature collect module is for gathering the temperature signal of described temperature sensor, the temperature that described boiling judge module is used for collecting according to temperature collect module counts the water temperature rate of change in predetermined amount of time, and judging whether the water in hot-water bottle reaches fluidized state according to described water temperature rate of change, described control module is used for controlling described automatic shutter lid mechanism when described boiling judge module is judged to be fluidized state and opens pot lid; And control described electronic switch disconnecting circuit after a predetermined time and control described automatic shutter lid mechanism to close pot lid.
Particularly, described automatic shutter lid mechanism comprise be fixedly installed on below pot lid with the seal box be connected bottom pot lid, support is fixed on the motor of described seal box inside, the driving gear that arrange concentric on motor output shaft, the driven gear engaged with driving gear, the connecting rod be connected with driven gear shaft, be arranged on first limit switch of driven gear one end, be arranged on the second limit switch of the driven gear other end, and the contact be arranged on seal box sidewall, wherein connecting rod is arranged in the body recess of pot lid.
Preferably, described driven gear is sector gear; Glass fibre thermal insulation layer is provided with in described seal box.
Further, the circuit between described single-chip microcomputer and described electronic switch is also provided with the driver module for driving described electronic switch.
Preferably, described temperature sensor is digital temperature sensor.
Preferably, described power supply is AC/DC power supply.
Preferably, described electronic switch is IGCT.
Alternatively, described electronic switch is relay.
Application the present invention, there is following beneficial effect: the present invention adopts boiling judge module, according to the water temperature rate of change in the temperature computation predetermined amount of time that temperature collect module collects, and judge whether the water in hot-water bottle reaches fluidized state according to described water temperature rate of change, this determination methods avoids the malfunctioning a series of boiling decision problems brought of steam cock, boiling is judged more accurate.In addition, the present invention, by arranging automatic shutter lid mechanism, can automatically open pot lid and continue heating, until automatically close pot lid after predetermined time, thus the harmful substance in water fully be volatilized, increase water quality after water boiling.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art and advantage, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structured flowchart of the automatic shutter lid electric kettle based on the control of water temperature rate of change that the embodiment of the present invention one, two provides;
Fig. 2 be the embodiment of the present invention one, two provide based on water temperature rate of change control automatic shutter lid electric kettle close lid state structural representation;
Fig. 3 is the uncapped state structural representation of the automatic shutter lid electric kettle based on the control of water temperature rate of change that the embodiment of the present invention one, two provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
Embodiment one:
Refer to Fig. 1, Fig. 2, Fig. 3, the invention provides a kind of automatic shutter lid electric kettle controlled based on water temperature rate of change,
Comprise hot-water bottle body, automatic shutter lid mechanism, single-chip microcomputer, electronic switch, power supply and temperature sensor, described hot-water bottle body comprises pot lid and heating resistor, wherein,
One end of described electronic switch is for connecting external power supply, and the other end connects described heating resistor;
Described power supply connects described temperature sensor and single-chip microcomputer respectively;
Described single-chip microcomputer comprises temperature collect module, boiling judge module and control module, described temperature collect module is for gathering the temperature signal of described temperature sensor, the temperature that described boiling judge module is used for collecting according to temperature collect module counts the water temperature rate of change in predetermined amount of time, and judging whether the water in hot-water bottle reaches fluidized state according to described water temperature rate of change, described control module is used for controlling described automatic shutter lid mechanism when described boiling judge module is judged to be fluidized state and opens pot lid; And control described electronic switch disconnecting circuit after a predetermined time and control described automatic shutter lid mechanism to close pot lid.
See Fig. 2 and Fig. 3, shown in be respectively the electric kettle automatic shutter lid mechanism of the embodiment of the present invention close lid and the structural representation of uncapped state, it is for carrying out automatic shutter lid to the pot lid 10 adopting articulated manner to arrange and kettle body 20, comprise be fixedly installed on below pot lid 10 with the seal box 301 be connected bottom pot lid, support is fixed on the motor 302 of seal box 301 inside, the driving gear 303 that arrange concentric on motor output shaft, the driven gear 304 engaged with driving gear 303, the connecting rod 308 be connected with driven gear shaft, be arranged on first limit switch 305 of driven gear one end, be arranged on the second limit switch 307 of the driven gear other end, and the contact 306 be arranged on seal box sidewall, wherein connecting rod 308 is arranged in the body recess of pot lid.
The course of work of the electric kettle automatic shutter lid mechanism that the embodiment of the present invention realizes is as follows:
(1) uncap
Single-chip microcomputer is after detecting that water reaches fluidized state, and input high level controls motor to start to rotate forward, and forwards contact probe to when encountering the position of the second limit switch, motor stalls.
(2) lid is closed
The scheduled time (as 3 minutes) triggers motor reversal afterwards, forwards contact probe to when encountering the position of the first limit switch, motor stalls.
Further, in other embody rule example, in order to reduce the spatial volume shared by electric kettle, arranging driven gear is sector gear.In order to block the fire damage of waste water heat to motor, preventing motor overheated in the course of the work, in seal box, being provided with glass fibre thermal insulation layer.
Further, the circuit between described single-chip microcomputer and described electronic switch is also provided with the driver module for driving described electronic switch.
Preferably, described temperature sensor is digital temperature sensor.
In order to accurate acquisition temperature, described temperature sensor is digital temperature sensor.
Digital temperature sensor is also digital thermometer, adopt temperature-sensing element (device) i.e. temperature sensor (as RTD, thermocouple, semiconductor, thermistor etc.), the change of temperature is converted to the change of the signal of telecommunication, as the change of voltage and current, the change of variations in temperature and the signal of telecommunication has certain relation, as linear relationship, certain curved line relation etc., this signal of telecommunication can use analog-to-digital circuit and A/D converter circuit that analog signal is converted to data signal, data signal gives processing unit again, as single-chip microcomputer or PC etc., processing unit calculates through inner software and this data signal and temperature is connected, become the Temperature numerical that can show, as 25.0 degrees Celsius, then display unit is passed through, as LED, LCD or computer screen etc. show to be observed to people.This completes the basic temp sensing function of digital thermometer.
Adopt temperature sensor temperature signal can be converted to the signal of telecommunication, thus realize the control of single-chip microcomputer based on temperature.
Described power supply is AC/DC power supply.
Described electronic switch is IGCT.
Application the present invention, there is following beneficial effect: the present invention adopts boiling judge module, according to the water temperature rate of change in the temperature computation predetermined amount of time that temperature collect module collects, and judge whether the water in hot-water bottle reaches fluidized state according to described water temperature rate of change, this determination methods avoids the malfunctioning a series of boiling decision problems brought of steam cock, boiling is judged more accurate.In addition, the present invention, by arranging automatic shutter lid mechanism, can automatically open pot lid and continue heating, until automatically close pot lid after predetermined time, thus the harmful substance in water fully be volatilized, increase water quality after water boiling.
Embodiment two:
Refer to Fig. 1, Fig. 2, Fig. 3, the invention provides a kind of automatic shutter lid electric kettle controlled based on water temperature rate of change,
Comprise hot-water bottle body, automatic shutter lid mechanism, single-chip microcomputer, electronic switch, power supply and temperature sensor, described hot-water bottle body comprises pot lid and heating resistor, wherein,
One end of described electronic switch is for connecting external power supply, and the other end connects described heating resistor;
Described power supply connects described temperature sensor and single-chip microcomputer respectively;
Described single-chip microcomputer comprises temperature collect module, boiling judge module and control module, described temperature collect module is for gathering the temperature signal of described temperature sensor, the temperature that described boiling judge module is used for collecting according to temperature collect module counts the water temperature rate of change in predetermined amount of time, and judging whether the water in hot-water bottle reaches fluidized state according to described water temperature rate of change, described control module is used for being judged to be that fluidized state controls described automatic shutter lid mechanism and opens pot lid at described boiling judge module; And control described electronic switch disconnecting circuit after a predetermined time and control described automatic shutter lid mechanism to close pot lid.
See Fig. 2 and Fig. 3, shown in be respectively the electric kettle automatic shutter lid mechanism of the embodiment of the present invention close lid and the structural representation of uncapped state, it is for carrying out automatic shutter lid to the pot lid 10 adopting articulated manner to arrange and kettle body 20, comprise be fixedly installed on below pot lid 10 with the seal box 301 be connected bottom pot lid, support is fixed on the motor 302 of seal box 301 inside, the driving gear 303 that arrange concentric on motor output shaft, the driven gear 304 engaged with driving gear 303, the connecting rod 308 be connected with driven gear shaft, be arranged on first limit switch 305 of driven gear one end, be arranged on the second limit switch 307 of the driven gear other end, and the contact 306 be arranged on seal box sidewall, wherein connecting rod 308 is arranged in the body recess of pot lid.
The course of work of the electric kettle automatic shutter lid mechanism that the embodiment of the present invention realizes is as follows:
(1) uncap
Single-chip microcomputer is after detecting that water reaches fluidized state, and input high level controls motor to start to rotate forward, and forwards contact probe to when encountering the position of the second limit switch, motor stalls.
(2) lid is closed
The scheduled time (as 3 minutes) triggers motor reversal afterwards, forwards contact probe to when encountering the position of the first limit switch, motor stalls.
Further, in other embody rule example, in order to reduce the spatial volume shared by electric kettle, arranging driven gear is sector gear.In order to block the fire damage of waste water heat to motor, preventing motor overheated in the course of the work, in seal box, being provided with glass fibre thermal insulation layer.
Further, the circuit between described single-chip microcomputer and described electronic switch is also provided with the driver module for driving described electronic switch.
Preferably, described temperature sensor is digital temperature sensor.
In order to accurate acquisition temperature, described temperature sensor is digital temperature sensor.
Digital temperature sensor is also digital thermometer, adopt temperature-sensing element (device) i.e. temperature sensor (as RTD, thermocouple, semiconductor, thermistor etc.), the change of temperature is converted to the change of the signal of telecommunication, as the change of voltage and current, the change of variations in temperature and the signal of telecommunication has certain relation, as linear relationship, certain curved line relation etc., this signal of telecommunication can use analog-to-digital circuit and A/D converter circuit that analog signal is converted to data signal, data signal gives processing unit again, as single-chip microcomputer or PC etc., processing unit calculates through inner software and this data signal and temperature is connected, become the Temperature numerical that can show, as 25.0 degrees Celsius, then display unit is passed through, as LED, LCD or computer screen etc. show to be observed to people.This completes the basic temp sensing function of digital thermometer.
Adopt temperature sensor temperature signal can be converted to the signal of telecommunication, thus realize the control of single-chip microcomputer based on temperature.
Preferably, described power supply is AC/DC power supply.
Described electronic switch is relay.
Application the present invention, there is following beneficial effect: the present invention adopts boiling judge module, according to the water temperature rate of change in the temperature computation predetermined amount of time that temperature collect module collects, and judge whether the water in hot-water bottle reaches fluidized state according to described water temperature rate of change, this determination methods avoids the malfunctioning a series of boiling decision problems brought of steam cock, boiling is judged more accurate.In addition, the present invention, by arranging automatic shutter lid mechanism, can automatically open pot lid and continue heating, until automatically close pot lid after predetermined time, thus the harmful substance in water fully be volatilized, increase water quality after water boiling.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.

Claims (8)

1., based on the automatic shutter lid electric kettle that water temperature rate of change controls, it is characterized in that, comprise hot-water bottle body, automatic shutter lid mechanism, single-chip microcomputer, electronic switch, power supply and temperature sensor, described hot-water bottle body comprises pot lid and heating resistor, wherein,
One end of described electronic switch is for connecting external power supply, and the other end connects described heating resistor;
Described power supply connects described temperature sensor and single-chip microcomputer respectively;
Described single-chip microcomputer comprises temperature collect module, boiling judge module and control module, described temperature collect module is for gathering the temperature signal of described temperature sensor, described boiling judge module is used for the water temperature rate of change in the temperature computation predetermined amount of time that collects according to temperature collect module, and judging whether the water in hot-water bottle reaches fluidized state according to described water temperature rate of change, described control module is used for controlling described automatic shutter lid mechanism when described boiling judge module is judged to be fluidized state and opens pot lid; And control described electronic switch disconnecting circuit after a predetermined time and control described automatic shutter lid mechanism to close pot lid.
2. the automatic shutter lid electric kettle controlled based on water temperature rate of change according to claim 1, it is characterized in that, described automatic shutter lid mechanism comprise be fixedly installed on below pot lid with the seal box be connected bottom pot lid, support is fixed on the motor of described seal box inside, the driving gear that arrange concentric on motor output shaft, the driven gear engaged with driving gear, the connecting rod be connected with driven gear shaft, be arranged on first limit switch of driven gear one end, be arranged on the second limit switch of the driven gear other end, and the contact be arranged on seal box sidewall, wherein connecting rod is arranged in the body recess of pot lid.
3. the automatic shutter lid electric kettle controlled based on water temperature rate of change according to claim 2, it is characterized in that, described driven gear is sector gear; Glass fibre thermal insulation layer is provided with in described seal box.
4. the automatic shutter lid electric kettle controlled based on water temperature rate of change according to claim 1 or 3, is characterized in that, the circuit between described single-chip microcomputer and described electronic switch being also provided with the driver module for driving described electronic switch.
5. the automatic shutter lid electric kettle controlled based on water temperature rate of change according to claim 4, it is characterized in that, described temperature sensor is digital temperature sensor.
6. the automatic shutter lid electric kettle controlled based on water temperature rate of change according to claim 1,2,3 or 5, it is characterized in that, described power supply is AC/DC power supply.
7. the automatic shutter lid electric kettle controlled based on water temperature rate of change according to claim 6, it is characterized in that, described electronic switch is IGCT.
8. the automatic shutter lid electric kettle controlled based on water temperature rate of change according to claim 6, it is characterized in that, described electronic switch is relay.
CN201510372566.1A 2015-06-29 2015-06-29 Electric kettle with automatically opening and closing lid based on rate of water temperature change CN105011752A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105326386A (en) * 2015-11-23 2016-02-17 珠海格力电器股份有限公司 Water temperature boiling point judging method and device and electric kettle
CN105942849A (en) * 2016-07-24 2016-09-21 邬晨燚 Temperature-sensing automatic cover removing kettle
CN106598102A (en) * 2016-12-07 2017-04-26 宁波方太厨具有限公司 Heating cooking equipment and coup cooking control method thereof
CN106618152A (en) * 2016-12-07 2017-05-10 宁波方太厨具有限公司 Heating cooking apparatus and its boiling water recognition method
CN107149402A (en) * 2016-03-03 2017-09-12 苏州升奥新能源有限公司 A kind of SCM Based preservation and controlling electric kettle
CN109527988A (en) * 2019-01-02 2019-03-29 华南理工大学 A kind of intelligent temperature control kettle and its control method
CN110074664A (en) * 2019-04-29 2019-08-02 英特卡机电(惠州)有限公司 The electric kettle and method of intelligent-induction water boiling temperature and delay cut-off

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CN1865957A (en) * 2006-05-23 2006-11-22 广东天际电器有限公司 Detection method for boiling state of food in cooking pot and detection device therefor
CN201356438Y (en) * 2009-02-25 2009-12-09 李伟凡 Time delay control device of electric kettle
CN203290755U (en) * 2013-04-18 2013-11-20 广州市拓璞电器发展有限公司 Automatic cover-opening type kettle
CN203873591U (en) * 2014-04-15 2014-10-15 浙江广厦建设职业技术学院 Automatic cover opening and closing mechanism for electric heating kettle

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CN1740929A (en) * 2005-09-08 2006-03-01 晶辉科技(深圳)有限公司 Method for estimating water boiling of electric heating kettle
CN1865957A (en) * 2006-05-23 2006-11-22 广东天际电器有限公司 Detection method for boiling state of food in cooking pot and detection device therefor
CN201356438Y (en) * 2009-02-25 2009-12-09 李伟凡 Time delay control device of electric kettle
CN203290755U (en) * 2013-04-18 2013-11-20 广州市拓璞电器发展有限公司 Automatic cover-opening type kettle
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105326386A (en) * 2015-11-23 2016-02-17 珠海格力电器股份有限公司 Water temperature boiling point judging method and device and electric kettle
CN105326386B (en) * 2015-11-23 2017-12-01 珠海格力电器股份有限公司 Water temperature boiling point determination methods and device and electric kettle
CN107149402A (en) * 2016-03-03 2017-09-12 苏州升奥新能源有限公司 A kind of SCM Based preservation and controlling electric kettle
CN105942849A (en) * 2016-07-24 2016-09-21 邬晨燚 Temperature-sensing automatic cover removing kettle
CN106598102A (en) * 2016-12-07 2017-04-26 宁波方太厨具有限公司 Heating cooking equipment and coup cooking control method thereof
CN106618152A (en) * 2016-12-07 2017-05-10 宁波方太厨具有限公司 Heating cooking apparatus and its boiling water recognition method
CN109527988A (en) * 2019-01-02 2019-03-29 华南理工大学 A kind of intelligent temperature control kettle and its control method
CN109527988B (en) * 2019-01-02 2020-07-28 华南理工大学 Intelligent temperature control kettle and control method thereof
CN110074664A (en) * 2019-04-29 2019-08-02 英特卡机电(惠州)有限公司 The electric kettle and method of intelligent-induction water boiling temperature and delay cut-off

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