CN113841937A - Electronic cigarette based on electromagnetic temperature control technology and control method thereof - Google Patents
Electronic cigarette based on electromagnetic temperature control technology and control method thereof Download PDFInfo
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- CN113841937A CN113841937A CN202111070915.6A CN202111070915A CN113841937A CN 113841937 A CN113841937 A CN 113841937A CN 202111070915 A CN202111070915 A CN 202111070915A CN 113841937 A CN113841937 A CN 113841937A
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- 239000003571 electronic cigarette Substances 0.000 title claims abstract description 32
- 238000005516 engineering process Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 116
- 230000006698 induction Effects 0.000 claims abstract description 99
- 229910052751 metal Inorganic materials 0.000 claims abstract description 81
- 239000002184 metal Substances 0.000 claims abstract description 81
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 65
- 235000019505 tobacco product Nutrition 0.000 claims abstract description 21
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 241000208125 Nicotiana Species 0.000 claims description 23
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 23
- 230000008859 change Effects 0.000 claims description 12
- 238000004146 energy storage Methods 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000004044 response Effects 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000779 smoke Substances 0.000 description 13
- 230000004907 flux Effects 0.000 description 10
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 6
- 230000000391 smoking effect Effects 0.000 description 5
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 4
- 239000003818 cinder Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229960002715 nicotine Drugs 0.000 description 4
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 4
- 208000005189 Embolism Diseases 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
- A24F40/465—Shape or structure of electric heating means specially adapted for induction heating
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/10—Devices using liquid inhalable precursors
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/20—Devices using solid inhalable precursors
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/50—Control or monitoring
- A24F40/57—Temperature control
Abstract
The application relates to an electronic cigarette based on an electromagnetic temperature control technology and a control method thereof, wherein the electronic cigarette comprises a cigarette rod, a power supply device and an atomizer, wherein the power supply device and the atomizer are arranged in the cigarette rod; the atomizer comprises an induction coil connected with the power supply device and a metal heating tube arranged in the induction coil in a penetrating way, and the metal heating tube is used for placing tobacco products; the power supply device is used for outputting variable current to the induction coil. This application has and makes tobacco products thermally equivalent, promotes the taste, promotes the effect of using experience.
Description
Technical Field
The application relates to the field of electronic cigarettes, in particular to an electronic cigarette based on an electromagnetic temperature control technology and a control method thereof.
Background
The electronic cigarette is a substitute of a cigarette, generates smoke in a mode of electronically atomizing tobacco tar, and can achieve similar effect with the smoke generated by burning the cigarette. The electronic cigarette mainly comprises an airflow monitor, a control module, an atomizing head, a lithium battery and the like, wherein the control chip can monitor airflow flowing during smoking, and controls the atomizing head to heat up at the moment so as to atomize tobacco tar and generate simulated smoke.
At present, the mode of controlling the temperature rise of the atomizing head mainly adopts IQOS, namely a heating and non-burning technology. Conventional cigarettes must burn to 600 ℃ or above and produce smoke and soot during combustion. iQOS means that the tobacco in the tobacco rod is heated to a temperature of no more than 350 ℃, so that the tobacco can release aerosol containing nicotine without generating smoke or ash, and part of harmful substances can be reduced. The iQOS electronic cigarette generally adopts a zirconia small tip sheet and an alumina small tip rod to heat one end of the cigarette, and when the iQOS electronic cigarette is used, the zirconia small tip sheet and the alumina small tip rod need to be inserted into cigarette tobacco, and the whole cigarette is finally baked through the principle of heat transfer.
In view of the above-mentioned related technologies, the inventor thinks that the current electronic cigarette can only heat a local part of a tobacco product, and the heating is not uniform, so that the taste of raw tobacco is mixed in the smoke smell, and the defect of poor use experience exists.
Disclosure of Invention
In order to improve the use experience, the electronic cigarette based on the electromagnetic temperature control technology is provided.
The application provides an electron cigarette based on electromagnetism accuse temperature technique adopts following technical scheme:
an electronic cigarette based on an electromagnetic temperature control technology comprises a cigarette rod, a power supply device and an atomizer, wherein the power supply device and the atomizer are arranged in the cigarette rod;
the atomizer comprises an induction coil connected with the power supply device and a metal heating tube arranged in the induction coil in a penetrating way, and the metal heating tube is used for placing tobacco products;
the power supply device is used for outputting variable current to the induction coil.
Through adopting above-mentioned technical scheme, power supply unit is to the electric current that induction coil output changed, and induction coil produces the magnetic field that the magnetic flux changes for produce eddy current in the metal heating tube that passes induction coil, with this make metal heating tube self heat production and heat tobacco products, because the eddy current principle can make the whole even heat production of metal heating tube, with this make tobacco products thermally equivalent, promote the taste, promote to use and experience.
Preferably, a heating needle is arranged in the metal heating tube in a penetrating manner, and the heating needle is used for being inserted into the tobacco product.
Through adopting above-mentioned technical scheme, because the heating pin distributes along metal heating tube axial, consequently can produce eddy current in the heating pin in step to this makes the heating pin heat production, heats with this from tobacco products's inside and outside, promotes the heating degree of consistency, promotes the taste, promotes to use and experiences.
Preferably, the power supply device comprises a trigger module, a control module and a switch module;
the trigger module is used for outputting a trigger signal;
the control module is used for receiving and responding to the trigger signal to output a control signal;
the switch module is used for receiving a control signal and controlling the induction coil to be electrified intermittently, and the induction coil is connected with an energy storage element in parallel.
Through adopting above-mentioned technical scheme, the user is when starting the electron cigarette, trigger module output trigger signal, and control module receives and responds trigger signal output control signal, and later switch module receives and responds control signal control induction coil intermittent type circular telegram, and the last parallel connection of induction coil has the energy storage spare, and the energy storage spare charges when induction coil charges, and the energy storage spare discharges when induction coil cuts off the power supply, and the charge-discharge through the energy storage spare makes the electric current produce the change for induction coil produces the change magnetic field.
Preferably, the energy storage element adopts a capacitor, and the capacitor corresponds to the induction coil one by one.
By adopting the technical scheme, the current is changed through the charge and discharge of the capacitor, so that the induction coil generates a changing magnetic field.
Preferably, the control signal includes a plurality of pulse signals, the switch module includes a plurality of switch elements, a control end of each switch element is respectively used for receiving the corresponding pulse signal, the induction coils correspond to the switch elements one to one, and an input end and an output end of each switch element are connected in series in a loop of the corresponding induction coil.
Through adopting above-mentioned technical scheme, pulse signal is used for controlling the switch spare that corresponds and switches on, and each induction coil is along axial interval distribution, and a plurality of induction coils divide into different sections with the metal heating tube, and when different switch spares received corresponding pulse signal, heat one section that corresponds on the metal heating tube to this carries out segmentation heating and preheats cigarette, prolongs the live time of cigarette, accurate control smoke volume, thereby promotes the taste.
Preferably, the switching element is a mos tube, a triode or an IGBT tube.
By adopting the technical scheme, the mos tube, the triode or the IGBT tube can be used for controlling the on-off of the induction coil.
Preferably, the metal heating tube is connected with an NTC sensor for detecting a temperature value of the metal heating tube, the control module is connected with the NTC sensor, and the control module stops outputting the control signal or adjusting a parameter of the control signal when the temperature value of the metal heating tube exceeds a preset threshold value.
By adopting the technical scheme, the NTC sensor can detect the temperature value of the metal heating tube, and when the tobacco is possibly influenced by overhigh temperature, the control module stops outputting the control signal to avoid the overheating of the metal heating tube; or adjusting parameters of the control signal, such as pulse frequency, so as to reduce the magnetic flux variation of the induction coil, reduce the heating power of the metal heating tube and further reduce the temperature value.
Preferably, the number of the NTC sensors is multiple, the induction ends of the NTC sensors are respectively contacted with the sections of the metal heating tube, and the control module outputs an adjusting signal for controlling the induction coils to be sequentially electrified according to the temperature value of each NTC sensor.
Through adopting above-mentioned technical scheme, NTC sensor monitors the temperature value of the metal heating tube of different sections respectively, and convenient segmentation heats and monitors tobacco products to this control smog volume promotes the taste, judges the nicotine surplus according to the temperature conditions of each section of tobacco products simultaneously, with this convenient control metal heating tube segmentation heating, extension tobacco products's live time.
Preferably, the triggering module comprises an airflow sensor for detecting the change of the gas in the cigarette rod, and when the airflow sensor detects that the flow rate of the gas exceeds a set value or the air pressure is lower than the set value, a triggering signal is output.
Through adopting above-mentioned technical scheme, detect the air current change in the tobacco rod through airflow sensor, when the user smoked the electron cigarette, can produce the atmospheric pressure change in the tobacco rod, export trigger signal when the gas flow rate exceeded the setting value or atmospheric pressure is less than the setting value to this control metal heating tube heating tobacco products, thereby reduce artifical part, promote to use and experience.
In a second aspect, in order to improve the use experience, the application provides a control method, which adopts the following technical scheme:
a control method for applying the electronic cigarette based on the electromagnetic temperature control technology comprises the following steps,
acquiring a trigger signal;
selecting an induction coil needing to be electrified according to the input condition of the trigger signal;
and outputting a control signal for controlling the power supply device to input the varying current to the selected induction coil in response to the trigger signal.
By adopting the technical scheme, the input of the trigger signal corresponds to the smoking action of the user, so that the input condition of the trigger signal can represent the smoking condition of the user, the induction coils are distributed in a segmented manner along the extension direction of the tobacco product, the induction coil which needs to be electrified is selected according to the smoking condition of the user, for example, when the user continuously smokes, the switching speed of switching to the next segment of the heated tobacco product can be increased, and the taste of the tobacco product is kept.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the magnetic field generated by the induction coil and changed by the magnetic flux enables the metal heating tube to generate heat and heat the tobacco product, and the metal heating tube can generate heat uniformly on the whole due to the eddy current principle, so that the tobacco product is heated uniformly, the taste is improved, and the use experience is improved;
2. because the heating needles are axially distributed along the metal heating tube, eddy current can be synchronously generated in the heating needles, so that the heating needles generate heat, and the heating needles are heated from the inside and the outside of the tobacco product, thereby improving the heating uniformity, the taste and the use experience;
3. when a user starts the electronic cigarette, the trigger module outputs a trigger signal, the control module receives and responds the trigger signal to output a control signal, the switch module receives and responds the control signal to control the induction coil to be electrified, the energy storage piece is connected to the induction coil in parallel, and current is changed through charging and discharging of the energy storage piece, so that the induction coil generates a changing magnetic field.
Drawings
Fig. 1 is a schematic view of the overall structure of an electronic cigarette in embodiment 1 of the present application.
Fig. 2 is a schematic diagram of an explosion structure of the electronic cigarette in embodiment 1 of the present application, mainly showing an induction coil.
Fig. 3 is a schematic partial structure diagram of an electronic cigarette according to embodiment 1 of the present application, which mainly shows an NTC sensor.
Fig. 4 is a schematic circuit diagram of a power supply device according to embodiment 1 of the present application.
Fig. 5 is a schematic view of the overall structure of an electronic cigarette according to embodiment 2 of the present application.
Fig. 6 is a schematic circuit diagram of a power supply device according to embodiment 3 of the present application.
Description of reference numerals: 1. a tobacco rod; 11. a cover body; 12. inserting a cigarette port; 2. a power supply device; 21. a triggering module; 211. an airflow sensor; 22. a control module; 23. a switch module; 24. a battery; 3. an atomizer; 31. an induction coil; 32. a metal heating tube; 33. an NTC sensor; 34. a heating pin; 4. a tobacco residue outlet; 41. plugging; 42. a circuit board.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
The tobacco product can be a traditional roll paper cigarette which is wrapped with tobacco and provided with a filter tip; or the smoke bomb can be provided, oil absorption cotton is placed in the smoke bomb, the oil absorption cotton adsorbs smoke oil, and the shell of the smoke bomb is made of heat-resistant materials such as metal and the like. The cartridge is treated in this embodiment in a similar manner to a conventional rolled paper cigarette, so this embodiment is only exemplified by a conventional rolled paper cigarette.
Both the zirconia small tip plate and the alumina small tip rod used by IQOS have disadvantages: the zirconium oxide small tip is easy to be inserted into tobacco shreds and broken, while the aluminum oxide small tip has high energy consumption and low heating speed.
Example 1:
the application discloses electron cigarette based on electromagnetism accuse temperature technique.
Referring to fig. 1 and 2, the electronic cigarette based on the electromagnetic temperature control technology includes a cigarette rod 1, wherein the cigarette rod 1 is cylindrical, and a power supply device 2 and an atomizer 3 are installed in the cigarette rod 1. The atomizer 3 includes an induction coil 31 and a metal heating tube 32 inserted into the induction coil 31. The power supply device 2 is used for outputting variable current to the induction coil 31, so that the induction coil 31 generates a magnetic field with variable magnetic flux, eddy current is generated on the metal heating tube 32, the metal heating tube 32 generates heat, cigarettes are stuffed in the metal heating tube 32 in advance, the cigarettes are heated, the cigarettes are maintained below 350 ℃, and part of harmful substances are reduced. The user can draw through the filter of the cigarette, and in other embodiments, the user can also draw through a suction nozzle (not shown) separately arranged on the cigarette rod 1 and communicated with one end of the metal heating tube 32.
The metal heating tube 32 is internally provided with a heating needle 34 in a penetrating way, the heating needle 34 is distributed along the central axis of the circular metal heating tube 32, and one end of the metal heating tube 32 is fixed with the heating needle 34. The heating needle 34 is made of metal, and one end of the heating needle is sharp, so that the heating needle 34 can be conveniently inserted into the cigarette when the cigarette is inserted into the metal heating tube 32. When the magnetic field that produces the magnetic flux change in induction coil 31, synchronous eddy current that produces in the heating needle 34 to this cooperation metal heating tube 32 heats simultaneously from cigarette inside and outside, promotes the degree of consistency of heating, promotes the taste and uses experience.
The metal heating tube 32 is located the one end opening of tobacco rod 1, and this opening upper cover of tobacco rod 1 is equipped with lid 11, and lid 11 is pegged graft the cooperation with 1 opening of tobacco rod, and the center of lid 11 offer with the interior cigarette inserting 12 of intercommunication of metal heating tube 32, the diameter of inserting cigarette inserting 12 is not more than the internal diameter of metal heating tube 32 to this avoids the user to touch metal heating tube 32 by mistake and leads to the scald.
Referring to fig. 2 and 3, the induction coil 31 has one or more induction coils 31, and if one induction coil 31 is used, the length of the induction coil 31 is the same as the length of the metal heating tube 32, and if a plurality of induction coils 31 are used, the induction coils 31 are distributed at intervals along the central axis of the metal heating tube 32, and the total length of all the induction coils 31 is the same as the length of the metal heating tube 32. In the embodiment, only two induction coils 31 are shown, and when the two induction coils 31 need to be heated simultaneously, the current input directions of the two induction coils 31 at the same time are the same, so that the metal heating tube 32 generates the same-direction eddy current.
Referring to fig. 2 and 4, the power supply device 2 includes a rod-shaped battery 24, a trigger module 21, a control module 22, and a switch module 23. The battery 24 is located at an end of the tobacco rod 1 remote from the metal heating tube 32 for providing electrical power. The triggering module 21 is configured to output a triggering signal, the control module 22 is configured to receive and respond to the triggering signal to output a control signal, and the switching module 23 is configured to receive and respond to the control signal to control the induction coil 31 to be intermittently energized, so that the induction coil 31 generates a magnetic field with a changing magnetic flux to generate an eddy current phenomenon.
The trigger module 21 comprises an airflow sensor 211, the airflow sensor 211 can adopt an air switch, can detect the change of the gas flow, and outputs a trigger signal when the gas flow rate reaches a set value; in another embodiment, the airflow sensor 211 may also adopt an air pressure sensing principle, for example, an SIN-P300 air pressure sensor, when a user sucks, a negative pressure is generated in the cigarette rod 1, and when the air pressure is lower than a set threshold, a trigger signal is output, so as to automatically trigger according to the smoking action of the user, thereby improving the use experience.
The control module 22 may adopt a single chip or an MCU, and the switch module 23 includes a plurality of switch elements, the number of the switch elements is the same as the number of the induction coils 31, and since the embodiment only shows the case of including two induction coils 31, the number of the switch elements is also two. For convenience of description, the two switching elements are respectively named as a first switching element and a second switching element, and the first switching element and the second switching element may be mos tubes, triodes or IGBT tubes, and in this embodiment, mos tubes are preferred, and the first switching element is a mos tube Q1 in fig. 4, and the second switching element is a mos tube Q2 in fig. 4.
The control signal comprises a plurality of groups of pulse signals, the pulse signals correspond to the switch pieces one by one, for convenience of understanding, the two groups of pulse signals of the embodiment are named as a first pulse signal and a second pulse signal respectively, the first pulse signal and the second pulse signal are both composed of a plurality of high level signals distributed at intervals, low level signals are distributed between every two adjacent high level signals, and the first pulse signal and the second pulse signal are separately and independently output.
The control end of the first switch piece is used for receiving the first pulse signal, and the control end of the second switch piece is used for receiving the second pulse signal. And the input end and the output end of the first switch piece are connected in series in the loop of one induction coil 31, the input end and the output end of the second switch piece are connected in series in the loop of the other induction coil 31, the induction coil 31 close to the filter or the suction nozzle corresponds to the first switch piece, and the other induction coil 31 corresponds to the second switch piece. The two ends of each induction coil 31 are connected in parallel with energy storage elements, the energy storage elements are capacitors, and the capacitors C1 correspond to the induction coils 31 one by one and are used for storing electric energy and releasing the electric energy when the induction coils 31 are powered off, so that an LC oscillating circuit is formed.
The single chip microcomputer outputs a first pulse signal in response to the trigger signal, so that the first switching element is turned on, at this time, the battery 24 is turned on with the induction coil 31, and since the induction coil 31 generates an induced electromotive force to block a current surge, a current of the induction coil 31 gradually increases, and meanwhile, the battery 24 charges the capacitor C1. When the first switching element is turned off, the capacitor C1 discharges to act as a freewheeling current, and the current continuously decreases, so that a repeatedly changing current is formed in the induction coil 31, and the induction coil 31 generates a magnetic field with a changing magnetic flux, thereby forming an eddy current in the metal heating tube 32.
Correspondingly, the condition for the single chip to output the second pulse signal needs to be set in advance, for example, a time delay mode is adopted, that is, the total time for the metal heating tube 32 to reach the set temperature value is set according to the output time of the first pulse signal. Specifically, when the output time of the first pulse signal exceeds a set value or the total time for the metal heating tube 32 to reach a set temperature value exceeds a set value, it indicates that the first segment of the cigarette is completely combusted and no reheating is needed. At this moment, the single chip microcomputer stops outputting the first pulse signal, the first pulse signal is converted into outputting the second pulse signal, meanwhile, the second switch part receives the second pulse signal and is conducted, so that a changing current is formed on the other induction coil 31 and a magnetic field with a changing magnetic flux is generated, an eddy current is formed on the second section of the metal heating tube 32, the other section of the cigarette is heated, the sectional baking of the cigarette is achieved, the using time of the cigarette is prolonged, the smoke amount is controlled, and the taste is improved.
The collection of the temperature value is realized by the NTC sensors 33 disposed on the metal heating tube 32, the number of the NTC sensors 33 is equal to the number of the induction coils 31, in this embodiment, two NTC sensors 33 are provided, and the induction ends of the NTC sensors 33 are respectively in contact with the sections of the metal heating tube 32. The single chip microcomputer is connected with the NTC sensor 33 and used for reading temperature values of all sections on the metal heating tube 32, when the temperature value of the first section of the metal heating tube 32 reaches a set value, the single chip microcomputer starts timing, and when the time length exceeds the set value, the single chip microcomputer converts the first pulse signal into a second pulse signal.
Meanwhile, the NTC sensor 33 monitors the temperature value of each section of the metal heating tube 32, and when the temperature value of any section of the metal heating tube 32 exceeds a preset threshold, the single chip stops outputting the control signal or adjusts the parameter of the control signal, where the control signal is the first pulse signal and the second pulse signal. When the singlechip stops outputting the control signal, the metal heating tube 32 stops heating; and adjusting the parameters of the control signal, i.e. adjusting the pulse frequency and duty ratio of the control signal, etc., the magnetic flux variation of the induction coil 31 can be adjusted, so as to change the eddy current, change the heating efficiency of the metal heating tube 32, finally reduce the temperature of the metal heating tube 32 to the normal range, and avoid the cigarette from being overheated to affect the taste.
The embodiment also provides a control method, which is applied to the electronic cigarette based on the electromagnetic temperature control technology, and the method comprises the following steps:
and S100, acquiring a trigger signal.
Specifically, the trigger signal refers to a signal output by the airflow sensor 211 when detecting that the flow rate of the gas in the cigarette rod 1 exceeds a set value or the pressure of the gas in the cigarette rod is lower than a set value.
S200, selecting the induction coil 31 needing to be electrified according to the input condition of the trigger signal.
Specifically, the input condition of the trigger signal may indicate the output frequency, frequency and output duration of the trigger signal within a set time. The set time refers to the time length from starting to dormancy and standby of the electronic cigarette, when the frequency or frequency reaches a preset value, the electronic cigarette is frequently smoked by a user, and the output duration can be used for evaluating the current usage of the cigarette, so that the current usage progress of the cigarette can be found.
And S300, responding to the trigger signal, outputting a control signal for controlling the power supply device 2 to input the changed current to the selected induction coil 31.
Specifically, the current position of the cigarette can be found according to the input condition of the trigger signal, and the nicotine allowance of the current baking section of the cigarette is estimated, so that the induction coil 31 corresponding to the next section of the metal heating tube 32 is controlled to be electrified when the nicotine allowance is exhausted or is about to be exhausted, and then each section of the cigarette is accurately heated and controlled, and the utilization rate of the cigarette is improved.
The implementation principle of the embodiment 1 of the application is as follows: during installation, a user inserts a conventional rolled paper cigarette into the metal heating tube 32 at one end of the tobacco rod 1, keeping the filter exposed, while the heating pin 34 is simultaneously inserted into the cigarette.
During the use, the user suction filter tip produces the negative pressure in the tobacco rod 1, and gaseous emergence flows simultaneously, triggers air current sensor 211, and air current sensor 211 output trigger signal, and the singlechip receives trigger signal and exports first pulse signal for first switch spare intermittent type switches on, makes the electric current that produces the change in the induction coil 31, makes in the metal heating tube 32 produce the eddy current and heat the first section of cigarette.
Then the singlechip stops outputting the first pulse signal, and converts the first pulse signal into the second pulse signal, so that the other induction coil 31 works, eddy current is formed on the second section of the metal heating tube 32, the other section of the cigarette is heated, the sectional baking of the cigarette is realized, the using time of the cigarette is prolonged, the smoke amount is controlled, and the taste is improved.
Example 2:
referring to fig. 5, the embodiment is different from embodiment 1 in that an accommodating cavity for accommodating the battery 24 is formed in one side of the metal heating tube 32 in the cigarette rod 1, the circuit board 42 is located in the accommodating cavity, devices such as mos tubes are distributed on the circuit board 42 and connected to the battery 24, a push switch extending out of the cigarette rod 1 is connected to the circuit board 42, and a user can start the heating functions of the induction coil 31 and the metal heating tube 32 by triggering the push switch.
The NTC sensor 33 is fixed with the inner wall of the cigarette rod 1 in an adhering manner, and has three induction coils 31 which are respectively corresponding to the three induction coils 31 which are uniformly distributed along the axial direction at intervals and used for respectively detecting the temperature of the three induction coils 31. And offer the cinder export 4 with the inside passageway intercommunication of metal heating tube 32 on tobacco rod 1, the cooperation of pegging graft has embolism 41 on the cinder export 4, and embolism 41 adopts heat-resisting metal material, and embolism 41 is used for plugging up cinder export 4, and convenience of customers clears up the cinder in the metal heating tube 32 after having taken out the cigarette simultaneously.
The implementation principle of embodiment 2 of the present application is as follows: during the use, the user inserts cigarette in the metal heating tube 32, presses down push switch and starts induction coil 31 for induction coil 31 produces the magnetic field of magnetic flux change, and first section metal heating tube 32 generates heat this moment, preheats the cigarette, detects the temperature of each section of metal heating tube 32 through NTC sensor 33, and when first section heating reached certain temperature, the second section began to preheat, and is all accomplished until the three-section heating, thereby promotes and uses experience.
Example 3:
referring to fig. 6, the difference between this embodiment and embodiment 1 is that the control module 22 includes an MCU and three switch sets, where the three switch sets respectively correspond to the three sets of induction coils 31, and include a third switch element and a fourth switch element. Taking one of the groups as an example, the third switching element includes the transistor Q3 in fig. 6, the fourth switching element includes the transistor Q4 in fig. 6, and both the transistor Q3 and the transistor Q4 employ NPN transistors.
The induction coil 31 is coupled with step-up transformers, i.e. T1, T2 and T3 in fig. 6, the high-voltage side coil of the step-up transformer is the induction coil 31, each step-up transformer has two groups of low-voltage side coils, one end of one group of low-voltage side coils is connected with the positive power supply VBAT end, the other end of the low-voltage side coil is grounded through a triode Q3, one end of the other group of low-voltage side coils is connected with the positive power supply VBAT end, the other end of the low-voltage side coils is grounded through a triode Q4, and the directions of the two groups of low-voltage side coils connected to the step-up transformer are opposite, so that the polarities of induced electromotive forces generated on the high-voltage side coils after the two groups of low-voltage side coils are respectively electrified are opposite. And the base electrodes of the triode Q3 and the triode Q4 are respectively connected with two output pins of the MCU, and the two pins of the MCU are used for alternately outputting high-level signals.
The NTC sensors 33 correspond to the induction coils 31 one by one, and the three groups of induction coils 31 are distributed at equal intervals along the axial direction of the metal heating tube 32, so that the 3 groups of NTC sensors 33 respectively detect three sections of the metal heating tube 32 (see fig. 2), when the airflow sensor 211 is triggered, the MCU controls two triodes, namely Q3 and Q4, in the first group of switch groups to alternately output high level signals, so that the high-voltage side coil of the step-up transformer alternately outputs current with opposite polarity, so that the first section of metal heating tube 32 is heated up due to the eddy current phenomenon, and then when the corresponding NTC sensors 33 detect that the temperature reaches the set temperature, the MCU controls the second group of switch groups to work until the temperature of the second section reaches the set temperature, and then the third group of switch groups are started, and so on, thereby heating the cigarette in sections, prolonging the service time of the cigarette, and simultaneously improving the taste.
The implementation principle of embodiment 3 of the application is as follows: two pins of the MCU alternately output high level signals to alternately switch on the transistor Q3 and the transistor Q4, so that when the transistor Q3 is switched on, the high-voltage side coil of the step-up transformer, i.e. the inductor 31, generates a forward current, and when the transistor Q4 is switched on, the high-voltage side coil of the step-up transformer, i.e. the inductor 31, generates a reverse current, thereby generating an alternating magnetic field in the inductor 31, and further heating the cigarette with the metal heating tube 32.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides an electron cigarette based on electromagnetism accuse temperature technique which characterized in that: comprises a tobacco rod (1), and also comprises a power supply device (2) and an atomizer (3) which are arranged in the tobacco rod (1);
the atomizer (3) comprises an induction coil (31) connected with the power supply device (2) and a metal heating tube (32) arranged in the induction coil (31) in a penetrating way, and tobacco products are placed in the metal heating tube (32);
the power supply device (2) is used for outputting a variable current to the induction coil (31).
2. The electronic cigarette based on the electromagnetic temperature control technology according to claim 1, wherein: a heating needle (34) penetrates through the metal heating tube (32), and the heating needle (34) is used for being inserted into a tobacco product.
3. The electronic cigarette based on the electromagnetic temperature control technology according to claim 1, wherein: the power supply device (2) comprises a trigger module (21), a control module (22) and a switch module (23);
the trigger module (21) is used for outputting a trigger signal;
the control module (22) is used for receiving and responding to a trigger signal to output a control signal;
the switch module (23) is used for receiving a control signal and controlling the induction coil (31) to be electrified intermittently, and the induction coil (31) is connected with an energy storage element in parallel.
4. The electronic cigarette based on the electromagnetic temperature control technology according to claim 3, wherein: the energy storage element adopts a capacitor, and the capacitor corresponds to the induction coils (31) one by one.
5. The electronic cigarette based on the electromagnetic temperature control technology according to claim 3, wherein: the control signal comprises a plurality of pulse signals, the switch module (23) comprises a plurality of switch pieces, the control end of each switch piece is respectively used for receiving the corresponding pulse signals, the induction coils (31) are in one-to-one correspondence with the switch pieces, and the input end and the output end of each switch piece are connected in series in the loop of the corresponding induction coil (31).
6. The electronic cigarette based on the electromagnetic temperature control technology according to claim 5, wherein: the switching element adopts mos tube, triode or IGBT tube.
7. The electronic cigarette based on the electromagnetic temperature control technology according to claim 5, wherein: the metal heating tube (32) is connected with an NTC sensor (33) used for detecting the temperature value of the metal heating tube, the control module (22) is connected with the NTC sensor (33), and when the temperature value of the metal heating tube (32) exceeds a preset threshold value, the control module (22) stops outputting the control signal or adjusting the parameter of the control signal.
8. The electronic cigarette based on the electromagnetic temperature control technology according to claim 7, wherein: the NTC sensors (33) are multiple, the induction ends of the NTC sensors (33) are respectively contacted with the sections of the metal heating tube (32), and the control module (22) outputs adjusting signals for controlling the induction coils (31) to be sequentially electrified according to the temperature values of the NTC sensors (33).
9. The electronic cigarette based on the electromagnetic temperature control technology according to claim 3, wherein: the trigger module (21) comprises an airflow sensor (211) for detecting the change of the gas in the cigarette rod (1), and when the airflow sensor (211) detects that the flow rate of the gas exceeds a set value or the air pressure is lower than the set value, a trigger signal is output.
10. A control method implemented by applying the electronic cigarette based on the electromagnetic temperature control technology according to any one of claims 1 to 9, comprising,
acquiring a trigger signal;
selecting an induction coil (31) to be electrified according to the input condition of the trigger signal;
a control signal for controlling the power supply device (2) to input a varying current to the selected induction coil (31) is output in response to the trigger signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111070915.6A CN113841937A (en) | 2021-09-13 | 2021-09-13 | Electronic cigarette based on electromagnetic temperature control technology and control method thereof |
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| CN202111070915.6A CN113841937A (en) | 2021-09-13 | 2021-09-13 | Electronic cigarette based on electromagnetic temperature control technology and control method thereof |
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