CN115067570A - Electronic cigarette adopting electromagnetic heating - Google Patents
Electronic cigarette adopting electromagnetic heating Download PDFInfo
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- CN115067570A CN115067570A CN202210675148.XA CN202210675148A CN115067570A CN 115067570 A CN115067570 A CN 115067570A CN 202210675148 A CN202210675148 A CN 202210675148A CN 115067570 A CN115067570 A CN 115067570A
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- heating
- cigarette
- metal composite
- induction coil
- composite magnetic
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- 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
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- 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
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- 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
-
- 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
- A24F40/53—Monitoring, e.g. fault detection
-
- 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
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- General Induction Heating (AREA)
- Resistance Heating (AREA)
Abstract
The invention relates to an electronic cigarette adopting electromagnetic heating, which comprises a filtering component, a heating component connected with the filtering component and a naked cigarette bomb, wherein the naked cigarette bomb is formed by extrusion molding of a porous carrier material, mixed powder, a tobacco extraction mixture, a particle aggregation inhibitor, an adhesive and metal composite magnetic conductor particles, and the metal composite magnetic conductor particles are uniformly distributed in the naked cigarette bomb; the control circuit board is used for controlling the electromagnetic induction coil to generate an alternating magnetic field according to a preset heating power formula, the metal composite magnetic conductor particles are used for cutting alternating magnetic lines of force of the alternating magnetic field in the alternating magnetic field and generating alternating current eddy currents inside the metal composite magnetic conductor particles, and the current eddy currents enable the metal composite magnetic conductor particles to generate heat so that the naked cigarette bomb releases smoke; the metal composite magnetic conductor particles are formed by mixing and sintering manganese-zinc ferrite doped with cerium oxide, ytterbium oxide and vanadium pentoxide and molybdenum disilicide powder doped with aluminum.
Description
Technical Field
The invention relates to the technical field of electronic smoking sets, in particular to an electronic cigarette adopting electromagnetic heating.
Background
At present, the global electronic cigarette market is rapidly growing, and the global electronic cigarette market is reported to be increased by about 34.2% in 2021, the global retail amount reaches 156.88 billion dollars, and the global electronic cigarette market is still growing, so that the electronic cigarette market has wide market potential.
Compared with the traditional cigarette, the electronic cigarette does not burn, only heats tobacco tar or herbal particles in the cartridge at a lower temperature (generally lower than 500 ℃) to atomize or generate aerosol, reduces the content of harmful substances such as carbon monoxide and tar because of not burning, and greatly reduces the harm of second-hand smoke. And because the tobacco tar or the herbaceous granule in the cigarette bullet are handled in advance, many harmful substance have all been processed the clearance in advance, and harmful substance reduces by a wide margin, does not have noxious material such as tar, carbon monoxide, nitrous acid in the smog that produces, also can not produce simultaneously and influence the second-hand cigarette of very big to surrounding crowd.
In the prior art, the electronic cigarette usually adopts the heating wire to heat the atomizer, but the heating efficiency of the heating wire is low, the heat loss is large, the heating effect is poor, the service life is short, and the heating uniformity is not good. In the prior art, electronic cigarettes adopting electromagnetic heating are also available, but the problems of high coercive force and magnetic loss, low magnetic permeability and the like still exist.
In addition, the heating control means of the electronic cigarette in the prior art is not reasonable enough, and either the electronic cigarette is heated by the same power all the time or PID control is adopted. Heating with the same power all the time can lead to the preheating time of about 20 seconds to 40 seconds being required to reach the target preheating temperature of the cartridge at the beginning, and along with the consumption of the tobacco material, if the same power is still used for heating, the use experience of the user can be influenced. And the PID control needs to adopt a temperature detection device to detect the temperature, so the equipment is complex, the control circuit is also complex, and the manufacturing cost is high.
Disclosure of Invention
The invention aims to provide a novel electronic cigarette adopting electromagnetic heating, and aims to solve the problems of low heating efficiency, high coercive force and magnetic loss, unreasonable heating control means and the like in the prior art.
The invention aims to solve the defects of the prior art and provides a novel electronic cigarette adopting electromagnetic heating, which comprises a filtering component, a heating component and a bare cigarette cartridge, wherein the heating component and the bare cigarette cartridge are connected to the filtering component; the heating assembly comprises: the heating device comprises a main body shell, a control circuit board and a heating mechanism, wherein the main body shell is internally provided with a cavity; the heat generating mechanism comprises: the cigarette box comprises a fixed seat, a heat insulation layer, an electromagnetic induction coil and a cigarette box, wherein the fixed seat is connected to the upper end part of a main body shell, a concave cavity is arranged in the fixed seat, the cigarette box is arranged in the concave cavity, the heat insulation layer is arranged between the inner wall of the concave cavity and the outer wall of the cigarette box, the electromagnetic induction coil is arranged between the heat insulation layer and the cigarette box, and the electromagnetic induction coil is electrically connected to the control circuit board; one part of the electromagnetic induction coil surrounds the outer wall of the cigarette cartridge bin, and the other part of the electromagnetic induction coil is positioned at the bottom of the cigarette cartridge bin and used for heating the cigarette cartridge bin so that the naked cigarette cartridges in the containing cavity are heated to release smoke; the heat insulation layer is used for insulating the cigarette magazine from the fixed seat and preventing the main body shell from overheating due to heat conduction; the naked cigarette bomb is formed by extrusion molding of a porous carrier material, mixed powder, a tobacco extraction mixture, a particle aggregation inhibitor, a binder and metal composite magnetic conductor particles, wherein the metal composite magnetic conductor particles are uniformly distributed in the naked cigarette bomb; the control circuit board is used for controlling the electromagnetic induction coil to generate an alternating magnetic field according to a preset heating power formula, the metal composite magnetic conductor particles are used for generating alternating current eddy currents in the metal composite magnetic conductor particles due to the fact that the surfaces of the metal composite magnetic conductor particles cut alternating magnetic lines of force of the alternating magnetic field in the alternating magnetic field, and the current eddy currents enable the metal composite magnetic conductor particles to generate heat so that the naked smoke bomb releases smoke; the metal composite magnetic conductor particles are formed by mixing and sintering manganese zinc ferrite doped with cerium oxide, ytterbium oxide and vanadium pentoxide and molybdenum disilicide powder doped with aluminum.
Preferably, the mass component ratio of the porous carrier material, the mixed powder, the tobacco extraction mixture, the particle aggregation inhibitor, the binder and the metal composite magnetic conductor particles is as follows: 20-30% of porous carrier material, 30-50% of mixed powder, 25-40% of tobacco extract mixture, 5-8% of particle aggregation inhibitor, 15-30% of binder and 5-25% of metal composite magnetic conductor particles.
Preferably, the average particle size of the metal composite magnetic conductor particles is between 30 and 65 microns.
Further preferably, the manganese-zinc ferrite is prepared by mixing iron sesquioxide, manganese dioxide and zinc oxide according to a molar ratio of 52.5: 32: 12.5 as a main ingredient for carrying out raw material proportioning, uniformly mixing the main ingredient, putting the mixture into a ball mill, and carrying out primary ball milling grinding and refining, wherein the mass ratio of balls to materials to water in the primary ball milling is 5:1:1.5, the primary ball milling is carried out for 2 hours, the rotating speed of the ball mill is 300r/min, and the ball mill rotates forwards and backwards alternately every 0.5 hour; after primary ball milling is finished, feeding the ball-milled slurry into a vacuum drying oven for heating and drying; after heating and drying, feeding the obtained powder into a pre-sintering furnace for pre-sintering, wherein the pre-sintering temperature is 950 ℃, the pre-sintering heat preservation time is 3 hours, and cooling the pre-sintered powder along with the furnace; adding cerium oxide, ytterbium oxide and vanadium pentoxide into the cooled powder material, mixing the cerium oxide, ytterbium oxide and vanadium pentoxide with mass percentages of 0.06-0.07-0.09% and aluminum-doped molybdenum disilicide powder with mass percentages of 0.2-0.6%, feeding the mixture into a ball mill for secondary ball milling, crushing and refining the powder material into a pre-sintered material, and exposing unreacted raw materials to complete reaction during sintering; the mass ratio of the balls to the materials to the water is 5:1:1.5 during secondary ball milling, the secondary ball milling is carried out for 3 hours, and then the mixture is sent into a vacuum drying oven to be dried; adding a PVA solution with the mass fraction of 15% into the dried powder as an adhesive, wherein the mass ratio of the powder to the PVA solution is 12:1, uniformly mixing the dried powder and the PVA solution, then carrying out spray granulation, sieving the obtained granules, screening out granules with the average particle size of 30-65 micrometers, sending the granules into a vacuum tube furnace, introducing a nitrogen-oxygen mixed gas with the oxygen partial pressure of 6%, carrying out heat preservation sintering at 1460 ℃ for 4.5 hours, introducing nitrogen into the vacuum tube furnace after the heat preservation is finished, and cooling the temperature of the granules to the room temperature to obtain the metal composite magnetic conductor granules.
Preferably, the matrix of the aluminum-doped molybdenum disilicide powder is Mo (Si) 0.7 Al 0.3 ) 2 。
Preferably, an inner heat insulation layer is further arranged between the electromagnetic induction coil and the outer wall and the bottom of the smoke magazine.
Preferably, the predetermined heating power formula is specifically:
wherein, P is the preset heating power output by the electromagnetic induction coil;
P max the maximum heating power which can be output by the electromagnetic induction coil;
t is the time counted from the start of the electronic cigarette adopting electromagnetic heating, and the unit is second;
when the heating power calculated according to the preset heating power formula is larger than the maximum heating power which can be output by the electromagnetic induction coil, the electromagnetic induction coil generates an alternating magnetic field with the maximum heating power which can be output.
Further preferably, the control circuit board further includes a circuit protection device, the circuit protection device is configured to detect a time when the electromagnetic induction coil generates the alternating magnetic field with the maximum heating power that can be output, and when the time when the electromagnetic induction coil generates the alternating magnetic field with the maximum heating power that can be output is longer than a predetermined time, the circuit protection device cuts off a power supply of the electromagnetic induction coil to stop heating.
Further preferably, the predetermined time is 4 seconds to 6 seconds.
The first time is 5 seconds to 7 seconds.
Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
the electronic cigarette adopting electromagnetic heating has the advantages of high heating efficiency, small heat loss, good heating effect, reasonable heating control means, no preheating time, capability of quickly reaching the target preheating temperature of the cigarette cartridge, dynamic adjustment of heating power along with consumption of cigarette materials and improvement of use experience of users. The temperature detection device is not needed to detect the temperature, the equipment structure is simple, and the manufacturing cost is reduced.
The naked cigarette bomb is formed by extrusion molding of a porous carrier material, mixed powder, a tobacco extraction mixture, a particle aggregation inhibitor, a binder and metal composite magnetic conductor particles, wherein the metal composite magnetic conductor particles are uniformly distributed in the naked cigarette bomb. The metal composite magnetic conductor particles are prepared by doping cerium oxide (Ce) 2 O 3 ) Ytterbium trioxide (Yb) 2 O 3 ) And vanadium pentoxide (V) 2 O 5 ) The manganese-zinc ferrite is formed by mixing and sintering aluminum-doped molybdenum disilicide powder and undoped cerium oxide (Ce) 2 O 3 ) Ytterbium trioxide (Yb) 2 O 3 ) And vanadium pentoxide (V) 2 O 5 ) Compared with the manganese-zinc ferrite sample of the molybdenum disilicide powder doped with aluminum, the grain size uniformity is improved by 35.7%, the average value of magnetic loss is reduced by 18.6%, the average amplitude permeability is improved by 20.6%, and the coercive force is reduced by 8.52% (under 100 kHz) and 7.83% (under 20 kHz).
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 and 2 are overall sectional views of an electronic cigarette using electromagnetic heating according to the present invention.
Figure 3 is a schematic diagram of a filter assembly of an electronic cigarette using electromagnetic heating according to the present invention.
Figure 4 is a partial structural schematic diagram of the heating component of the electronic cigarette adopting electromagnetic heating according to the invention.
Fig. 5 is an exploded view of an electronic cigarette using electromagnetic heating according to the present invention.
Figure 6 is a schematic diagram of the filter portion of the electronic cigarette using electromagnetic heating according to the present invention.
Fig. 7 is a schematic structural diagram of a filter element fixing seat portion of an electronic cigarette adopting electromagnetic heating according to the present invention.
Fig. 8 is a schematic view of a part of the structure of the cartridge of the electronic cigarette using electromagnetic heating according to the present invention.
Fig. 9 is a schematic perspective view of a filter element fixing seat portion of an electronic cigarette using electromagnetic heating according to the present invention.
Fig. 10 is a partially enlarged structural view of a portion a in fig. 4.
Fig. 11 is a curve fitted to the predetermined heating power formula.
Detailed Description
The present invention is described in more detail below to facilitate an understanding of the present invention.
As shown in fig. 1 to 10, the electronic cigarette using electromagnetic heating according to the present invention includes a filter assembly 100, a heating assembly 200 connected to the filter assembly 100, and a bare cartridge 300, wherein the heating assembly 200 is used for heating the bare cartridge 300, and the filter assembly 100 is used for filtering smoke emitted from the heated bare cartridge 300; the heating assembly 200 includes: the heating device comprises a main body shell 25 with a cavity inside, a control circuit board 26 and a heating mechanism 02 which are arranged in the cavity of the main body shell 25, wherein the heating mechanism 02 is provided with a containing cavity 224 for containing a naked cigarette cartridge 300, and the control circuit board 26 is electrically connected to the heating mechanism 02 to control a power supply to supply power to the heating mechanism 02; the heating mechanism 02 includes: fixing base 20, insulating layer 24, electromagnetic induction lineThe cigarette case comprises a ring 23 and a cigarette magazine 22, wherein the fixed seat 20 is connected to the upper end part of a main body shell 25, a concave cavity is arranged in the fixed seat 20, the cigarette magazine 22 is arranged in the concave cavity, a heat insulation layer 24 is arranged between the inner wall of the concave cavity and the outer wall of the cigarette magazine 22, the electromagnetic induction coil 23 is arranged between the heat insulation layer 24 and the cigarette magazine 22, and the electromagnetic induction coil 23 is electrically connected to a control circuit board 26; one part of the electromagnetic induction coil 23 surrounds the outer wall of the cigarette magazine 22, and the other part is positioned at the bottom of the cigarette magazine 22, and heats the cigarette magazine 22 so that the bare cigarette 300 in the cavity 224 is heated to release smoke; the heat insulation layer 24 is used for insulating the cigarette magazine 22 from the fixed seat 20 and preventing the main body shell 25 from overheating due to heat conduction; the bare cartridge 300 is formed by extrusion molding of a porous carrier material, mixed powder, a tobacco extraction mixture, a particle aggregation inhibitor, a binder and metal composite magnetic conductor particles, wherein the metal composite magnetic conductor particles are uniformly distributed in the bare cartridge; the control circuit board 26 is configured to control the electromagnetic induction coil 23 to generate an alternating magnetic field according to a predetermined heating power formula, and the metal composite magnetic conductor particles are configured to generate alternating current eddy currents inside the metal composite magnetic conductor particles in the alternating magnetic field due to the surfaces of the metal composite magnetic conductor particles cutting alternating magnetic lines of force of the alternating magnetic field, where the current eddy currents cause the metal composite magnetic conductor particles to generate heat, so that the bare smoke cartridge 300 releases smoke; wherein the metal composite magnetic conductor particles are doped with cerium oxide (Ce) 2 O 3 ) Ytterbium trioxide (Yb) 2 O 3 ) And vanadium pentoxide (V) 2 O 5 ) The manganese-zinc ferrite is formed by mixing and sintering aluminum-doped molybdenum disilicide powder.
Preferably, the mass component ratio of the porous carrier material, the mixed powder, the tobacco extraction mixture, the particle aggregation inhibitor, the binder and the metal composite magnetic conductor particles is as follows: 20-30% of porous carrier material, 30-50% of mixed powder, 25-40% of tobacco extract mixture, 5-8% of particle aggregation inhibitor, 15-30% of binder and 5-25% of metal composite magnetic conductor particles.
Preferably, the average particle size of the metal composite magnetic conductor particles is between 30 and 65 microns.
Further preferably, the manganese-zinc ferrite is prepared by mixing iron sesquioxide, manganese dioxide and zinc oxide according to a molar ratio of 52.5: 32: 12.5 as a main ingredient for carrying out raw material proportioning, uniformly mixing the main ingredient, putting the mixture into a ball mill, and carrying out primary ball milling grinding and refining, wherein the mass ratio of balls to materials to water in the primary ball milling is 5:1:1.5, the primary ball milling is carried out for 2 hours, the rotating speed of the ball mill is 300r/min, and the ball mill rotates forwards and backwards alternately every 0.5 hour; after primary ball milling is finished, feeding the ball-milled slurry into a vacuum drying oven for heating and drying; the obtained powder is sent into a pre-sintering furnace for pre-sintering after heating and drying, the pre-sintering temperature is 950 ℃, the pre-sintering heat preservation time is 3 hours, and the powder is cooled along with the furnace after pre-sintering (the pre-sintering can improve the activity of the powder and enable the powder to produce a part of manganese-zinc ferrite phase); adding cerium oxide (Ce) with the mass component ratio of 0.06% -0.08% into the cooled powder 2 O 3 ) 0.06% -0.07% of ytterbium trioxide (Yb) 2 O 3 ) And 0.07% to 0.09% vanadium pentoxide (V) 2 O 5 ) Mixing the powder with aluminum-doped molybdenum disilicide powder accounting for 0.2-0.6% of the mass component, feeding the mixture into a ball mill for secondary ball milling, crushing and refining the powder into pre-sintered material, and exposing unreacted raw materials to completely react during sintering; the mass ratio of the balls to the materials to the water is 5:1:1.5 during secondary ball milling, the secondary ball milling is carried out for 3 hours, and then the mixture is sent into a vacuum drying oven to be dried; adding a PVA solution with the mass fraction of 15% into the dried powder as a bonding agent, wherein the mass ratio of the powder to the PVA solution is 12:1, uniformly mixing the dried powder and the PVA solution, then carrying out spray granulation, sieving the obtained granules, screening out granules with the average particle size of 30-65 micrometers, sending the granules into a vacuum tube furnace, and introducing nitrogen-oxygen mixed gas with the oxygen partial pressure of 6%And (3) insulating and sintering at 1460 ℃ for 4.5 hours, and introducing nitrogen into the vacuum tube furnace after the insulation is finished to cool the temperature of the particles to room temperature to obtain the metal composite magnetic conductor particles.
Preferably, the matrix of the aluminum-doped molybdenum disilicide powder is Mo (Si) 0.7 Al 0.3 ) 2 。
In the crystal structure of the molybdenum disilicide, silicon atoms form a covalent bond chain, molybdenum atoms belong to metal bond combination, and molybdenum-silicon atoms are between the covalent bond chain and the metal bond, so that the molybdenum disilicide has the characteristic of coexistence of the metal bond and the covalent bond.
Observing the surface appearance of the metal composite magnetic conductor particles through a scanning electron microscope, and carrying out element quantitative analysis on micro-regions on the surface of a sample to find that the average crystal grain inside the metal composite magnetic conductor particles is between 5 and 15 micrometers and is not doped with cerium oxide (Ce) 2 O 3 ) Ytterbium trioxide (Yb) 2 O 3 ) And vanadium pentoxide (V) 2 O 5 ) And the grain size uniformity was improved by 35.7% compared to the manganese zinc ferrite sample of aluminum-doped molybdenum disilicide powder.
Under the test conditions of normal temperature, 100mT and 100kHz, the soft magnetic alternating current performance of the metal composite magnetic conductor particles is tested by using a soft magnetic alternating current measuring device, and the average value of the magnetic loss of the metal composite magnetic conductor particles is about 58.67 and is found to be compared with undoped cerium oxide (Ce) 2 O 3 ) Ytterbium trioxide (Yb) 2 O 3 ) And vanadium pentoxide (V) 2 O 5 ) And the average magnetic loss was reduced by 18.6% compared to the manganese zinc ferrite sample of aluminum-doped molybdenum disilicide powder.
The average amplitude permeability of the metal composite magnetic conductor particles at 100kHz is 4256, and the metal composite magnetic conductor particles are not doped with cerium oxide (Ce) under the same condition 2 O 3 ) Ytterbium trioxide (Yb) 2 O 3 ) And vanadium pentoxide (V) 2 O 5 ) Andcompared with the manganese zinc ferrite sample of the molybdenum disilicide powder doped with aluminum, the average amplitude permeability is improved by 20.6 percent.
The coercive force of the metal composite magnetic conductor particles at 100kHz is 9.67, and the metal composite magnetic conductor particles are not doped with cerium oxide (Ce) under the same condition 2 O 3 ) Ytterbium trioxide (Yb) 2 O 3 ) And vanadium pentoxide (V) 2 O 5 ) And the coercivity was reduced by 8.52% compared to the manganese zinc ferrite sample of aluminum-doped molybdenum disilicide powder.
The coercive force of the metal composite magnetic conductor particles at 20kHz is 7.86, and the metal composite magnetic conductor particles are not doped with cerium oxide (Ce) under the same condition 2 O 3 ) Ytterbium trioxide (Yb) 2 O 3 ) And vanadium pentoxide (V) 2 O 5 ) And the coercivity was reduced by 7.83% compared to the manganese zinc ferrite sample of aluminum-doped molybdenum disilicide powder.
Preferably, an inner heat insulation layer is further arranged between the electromagnetic induction coil 23 and the outer wall and the bottom of the cartridge 22.
Preferably, the predetermined heating power formula is specifically:
wherein, P is the preset heating power output by the electromagnetic induction coil, and the unit is watt;
P max the maximum heating power which can be output by the electromagnetic induction coil is in watt;
t is the time counted from the start of the electronic cigarette adopting electromagnetic heating, and the unit is second;
when the heating power calculated according to the preset heating power formula is larger than the maximum heating power which can be output by the electromagnetic induction coil, the electromagnetic induction coil generates an alternating magnetic field with the maximum heating power which can be output.
It is noted that the physical quantity (predetermined heating power P, maximum heating work) in the predetermined heating power formulaRate P max The unit (watt, second) of the time t) at which the timing is started is only used to indicate the magnitude of the numerical value and does not participate in the operation in the formula. This is because the predetermined heating power formula is a fitting formula obtained by fitting data, not a physical formula or a mathematical formula obtained by strict mathematical derivation. For example, if t is 60 seconds, if the unit is changed into minutes, t becomes 1 minute, and the unit of "seconds" is only used for representing the size of the value of "60" and does not participate in the operation in the formula. If the unit of "second" is not limited in the formula, the person skilled in the art may adopt the value of "1 minute" to be substituted into the formula calculation, and obtain a confused calculation result. The unit of "watt" is the same and does not participate in the operation in the formula.
Further preferably, the control circuit board further comprises a circuit protection device, the circuit protection device is configured to detect a time when the electromagnetic induction coil generates the alternating magnetic field with the maximum heating power that can be output, and when the time when the electromagnetic induction coil generates the alternating magnetic field with the maximum heating power that can be output is longer than a predetermined time, the circuit protection device cuts off a power supply of the electromagnetic induction coil, stops heating, and after stopping the first time, re-turns on the power supply of the electromagnetic induction coil, and restarts timing after t is cleared.
The predetermined heating power formula is obtained by fitting a large number of experimental data. In order to solve the technical problem that the preheating time of 20 seconds to about 40 seconds is needed to reach the target preheating temperature of the cigarette cartridge when starting, the electronic cigarette is started by a user within 2 seconds by adopting the electromagnetic heating mode, the maximum heating power P is adopted firstly max Heating, can reach the target preheating temperature of cigarette bullet in the shortest time like this, fundamentally has solved and has needed 20 seconds to 40 seconds or so preheating time, influences the problem that user's use experience.
The value of 2 seconds is experimentally determined by the applicant, taking into account the maximum heating power P max And targeted preheating of cartridgesThe temperature can be easily obtained, 2 seconds is an optimal value, namely, the requirement of quickly reaching the target preheating temperature of the smoke cartridge is met, and the maximum heating power P cannot be adopted for a long time max Which affects the service life of the electromagnetic coil.
After more than 2 seconds, the applicant designed a series of experiments in order to determine the appropriate heating power. Firstly, the applicant wishes to avoid the presence of temperature detection means in the electronic cigarette, thus excluding the possibility of using PID control. Secondly, the applicant wishes to obtain a single-valued function of the real-time heating power with respect to the heating time, which is more compact to control.
Based on the above objectives, applicants observed 0 to P max As a sample space of the heating power, a sample space of 0 to 3 minutes (i.e., 180 seconds, generally, the average time after smoking one cigarette is about 3 minutes) is taken as a time, the sample space of the time is taken as a horizontal axis, the sample space of the heating power is taken as a vertical axis, the heating power is gradually increased in an arithmetic progression manner, 200 volunteers are selected as sample spaces of experiencers, the electronic cigarettes manufactured by different heating power control manners are respectively scored by the 200 volunteers, data with the highest score is selected as fitting data, a curve and a corresponding function equation are fitted according to the fitting data, and a final heating power formula is determined.
Suppose P max The power is increased sequentially according to an arithmetic progression within 180 seconds at 36 watts, namely when t is 1 second and 2 seconds, the heating power output by the electromagnetic induction coil is P max Namely 36 watts; when t is 3 seconds, the heating power output by the electromagnetic induction coil is 0.6 watt, when t is 4 seconds, the heating power is 0.8 watt, when t is 5 seconds, the heating power is 1 watt, … …, and so on, and until t is 180 seconds, the heating power is 36 watt. The use experience of the electronic cigarette manufactured by the control method was scored by 200 volunteers, and the scoring results were recorded. The scoring was done every 5 seconds.
The tolerance of the arithmetic progression is changed to 0.1 watt, 0.3 watt, 0.4 watt and … …, and the scoring result is recorded once again after each change.
The power was sequentially decremented in an equal-ratio series within 180 seconds using the tolerance corresponding to the previous experiment, and the scoring results were also scored and recorded.
And sequentially increasing or decreasing the power in an equal ratio series manner within 180 seconds, and also scoring and recording scoring results. The common ratio of the geometric series is 0.1,0.2,0.3, … … and 2 respectively.
Sorting all the scoring results according to the size, selecting the data arranged in the front row to form a scoring data space, arranging the corresponding time value and the heating power in the data in the selected scoring data space into a rectangular coordinate system, and fitting by using SCLAB software to form a curve shown in fig. 11, wherein the corresponding equation is the preset heating power formula.
Further preferably, the predetermined time is 4 seconds to 6 seconds, and the first time is 5 seconds to 7 seconds.
The predetermined time is 4 seconds to 6 seconds, the first time is 5 seconds to 7 seconds, which is also the preferable result obtained by the experiment, the specific experimental process is similar to the experimental process for obtaining the fitting formula (the predetermined heating power formula), the same is that 200 volunteers respectively score for different predetermined time and first time, and the data with the score ranked in the front is selected as the preferable data corresponding to the predetermined time and the first time.
After obtaining a fitting formula (the predetermined heating power formula), it is found that the maximum heating power P is reached at 22 to 23 seconds in the experiment process when the electronic cigarette is controlled by the heating power formula max And when the time for maintaining the maximum heating power is longer than the preset time (4 seconds to 6 seconds), stopping heating, switching on the power supply again after the first time (5 seconds to 7) is stopped, resetting t and then restarting timing. After the timing is restarted, the control is still carried out according to the preset heating power formula, and the scoring score value is not influenced.
Further preferably, the porous carrier material is an inorganic porous carrier material or an organic porous carrier material, and the inorganic porous carrier material is at least one of a molecular sieve, zeolite powder, macroporous resin, porous ceramic powder, alumina powder, coral powder, porous silica gel, oak powder, foamed nickel, foamed aluminum, porous stainless steel, porous silicon carbide and foamed glass; the organic porous carrier material is at least one of expanded tobacco stem powder, flower stem powder, kudzu root powder, coffee powder and mint leaf powder.
The mixed powder comprises: the tobacco leaf, the tobacco stem and the fragrant plant comprise the following components in percentage by mass: 15-25% of tobacco leaves, 20-30% of tobacco stems and 30-50% of fragrant plants. Wherein, the tobacco leaf includes: at least one of tobacco leaf upper part powder, tobacco leaf middle part powder and tobacco leaf lower part powder. Wherein the fragrant plant comprises at least one of moxa stem, bitter orange, pseudo-ginseng flower stem, tea, honeysuckle, dandelion, mint leaf, lotus leaf, coconut shell, frangipani, mesona chinensis benth, gynostemma pentaphylla, pterodonta foetida, maca, antrodia camphorata, tea stem and solanaceae plant fruit.
The tobacco extraction mixture comprises: the tobacco extract and the food-grade alcohol solution comprise the following components in percentage by mass: 20-40% of tobacco extract and 60-80% of food grade alcohol solvent. Wherein the food grade alcohol solvent comprises: the edible ethanol, the glycerol and the propylene glycol comprise, by mass, 5-15% of the edible ethanol, 15-50% of the glycerol and 5-50% of the propylene glycol. Preferably, the concentration of the edible ethanol is 75 wt%.
The particle aggregation inhibitor comprises: glycerol triacrylate, glycerol trimethacrylate, pentaerythritol tetraacrylate, or combinations thereof.
The binder is at least one of polyvinylpyrrolidone, copolymer of vinylpyrrolidone and vinyl acetate, dextrin, starch, methylcellulose, ethyl cellulose, CMC, CMCNa, guar gum, xanthan gum and HPMC.
As shown in fig. 1 and 2, the filter assembly 100 includes: a top end shell 11 with a cavity 10 inside, a filter 12 arranged in the cavity 10 and a filter element 13 arranged in the filter 12, wherein the top end shell 11 is connected with the main body shell 25, and in the embodiment, the heating component 200 and the filter component 100 are connected in a magnetic attraction way. In other embodiments, the two may be clamped or screwed. The filter 12 is assembled with the filter element 13 in a plug-in mounting mode, and after the filter element is used for a period of time, a user can conveniently and quickly replace the filter element.
As shown in fig. 1 and 6, an output channel 122 is disposed in the filter 12, the filter element 13 is disposed in the output channel 122, and the output channel 122 is communicated with the cavity 224, so that the smoke released after the bare smoke cartridge 300 located in the cavity 224 is heated is output to a user along the output channel 122 for smoking. The output channel 122 has a smaller opening at the upper end and a larger opening at the lower end.
As shown in fig. 8 and 10, the cartridge 22 comprises: the pipe body 221 with the upper end opening is characterized in that the end cover portion 223 extends outwards from the edge of the upper end of the pipe body 221, the outer wall of the pipe body 221 is close to the end cover portion 223 and is provided with an external thread 222, the inner wall of the cavity is provided with an internal thread 201 corresponding to the external thread 222, and the pipe body cavity of the pipe body 221 forms the containing cavity 224. This appearance chamber 224 corresponds according to the appearance of naked cigarette bullet 300, and the preferred columnar cavity that adopts is convenient for process cigarette bullet storehouse, and gets to put and change naked cigarette bullet more convenient, and naked cigarette bullet is also more abundant with the lateral wall contact in cigarette bullet storehouse in the heating process, and the heating effect is better.
As shown in fig. 2, fig. 7 and fig. 10, the filter assembly 100 further includes a filter element fixing seat 14, the filter element fixing seat 14 is connected in the top end housing 11, a through cavity 142 is provided in the filter element fixing seat 14, an upper end of the through cavity 142 abuts against the filter element 13, and a lower end of the through cavity 142 is communicated with the accommodating cavity 224.
Specifically, the filter element fixing seat 14 includes: the seat body 141 is arranged in the through cavity 142 in the middle of the seat body 141, a stop ring part 148 radially extends out of the middle of the inner wall of the through cavity 142, a tubular part 147 axially extends out of the edge of the lower end of the stop ring part 148, and an annular groove 146 is formed between the tubular part 147 and the inner wall of the through cavity 142; the filter element 13 abuts against the stop ring portion 148, and the end cover portion 223 is inserted into the annular groove 146.
A sealing ring 144 is further disposed in the annular groove 146, and the sealing ring 144 is used for sealing and connecting the cartridge magazine 22 and the filter element fixing seat 14.
Further, the lower end portion of the filter element fixing seat 14 is further provided with at least one mounting hole 145, a first magnet 21 is arranged in the mounting hole 145, a mounting groove 202 is also arranged at one end, opposite to the filter element fixing seat 14, of the fixing seat 20, a second magnet 29 is arranged in the mounting groove 202, and the first magnet 21 and the second magnet 29 are magnetically attracted to enable the heating assembly 200 to be magnetically attracted to the filtering assembly 100. Connect heating element 200 and filtering component 100 through the mode of magnetism, can convenience of customers open the two and change naked cigarette bullet 300, during the use, the main part shell 25 and top casing 11 are held respectively to both hands, open from first magnet 21 and second magnet 29 department, and at this moment, the upper end opening in cigarette bullet storehouse 22 exposes to take out the naked cigarette bullet that has used up, change new naked cigarette bullet.
As shown in fig. 6 and 7, the filter 12 includes: the filter comprises a filter body 121, an end cap part 123 extending from the lower end of the filter body 121 transversely outwards and a tube part 124 extending from the bottom of the end cap part 123 vertically, wherein the tube part 124, the end cap part 123 and the filter body 121 are internally provided with the air delivery channel 122 which is communicated with each other. The outer wall of the tube body part 124 is also provided with a first thread 125, the inner wall of the upper part of the through cavity 142 is provided with a second thread 143, and the filter 12 and the filter element fixing seat 14 are in threaded connection through the first thread 125 and the second thread 143.
As shown in fig. 4, the heating assembly 200 further includes a battery 27 and an interface 28 for charging the battery 27, wherein the battery 27 is disposed in the cavity of the main body housing 25. In other embodiments, an external power source, such as a mobile phone or a mobile power source, may be used to supply power.
It should be noted that: the environment-friendly heating non-burning bare cigarette cartridge applied to the embodiment is different from the replacement of the cut tobacco of the traditional cigarette in the existing market, is directly pressed according to the latest cigarette cartridge formula to form the bare cigarette cartridge, and has no external filter tip, blocking piece and wrapping paper. The novel naked cigarette cartridge uses less materials and is more environment-friendly.
Compared with the prior art, this embodiment the electron cigarette that adopts electromagnetic heating through filter tip, filter core mechanism etc. that generates heat has constituteed simple structure jointly reliably, the heating smoking set of easy dismouting and change naked cigarette bullet and filter core, its heating that is applicable to the environment-friendly heating that can be fine and does not burn naked cigarette bullet.
The foregoing describes preferred embodiments of the present invention, but is not intended to limit the invention thereto. Modifications and variations of the embodiments disclosed herein may be made by those skilled in the art without departing from the scope and spirit of the invention.
Claims (10)
1. The electronic cigarette adopting electromagnetic heating is characterized by comprising a filtering component, a heating component and a bare cigarette cartridge, wherein the heating component and the bare cigarette cartridge are connected to the filtering component; the heating assembly comprises: the heating device comprises a main body shell, a control circuit board and a heating mechanism, wherein the main body shell is internally provided with a cavity; the heat generating mechanism comprises: the cigarette box comprises a fixed seat, a heat insulation layer, an electromagnetic induction coil and a cigarette box, wherein the fixed seat is connected to the upper end part of a main body shell, a concave cavity is arranged in the fixed seat, the cigarette box is arranged in the concave cavity, the heat insulation layer is arranged between the inner wall of the concave cavity and the outer wall of the cigarette box, the electromagnetic induction coil is arranged between the heat insulation layer and the cigarette box, and the electromagnetic induction coil is electrically connected to the control circuit board; one part of the electromagnetic induction coil surrounds the outer wall of the cigarette cartridge bin, and the other part of the electromagnetic induction coil is positioned at the bottom of the cigarette cartridge bin and used for heating the cigarette cartridge bin so that the naked cigarette cartridges in the containing cavity are heated to release smoke; the heat insulation layer is used for insulating the cigarette magazine from the fixed seat and preventing the main body shell from overheating due to heat conduction; the naked cigarette bomb is formed by extrusion molding of a porous carrier material, mixed powder, a tobacco extraction mixture, a particle aggregation inhibitor, a binder and metal composite magnetic conductor particles, wherein the metal composite magnetic conductor particles are uniformly distributed in the naked cigarette bomb; the control circuit board is used for controlling the electromagnetic induction coil to generate an alternating magnetic field according to a preset heating power formula, the metal composite magnetic conductor particles are used for generating alternating current eddy currents in the metal composite magnetic conductor particles due to the fact that the surfaces of the metal composite magnetic conductor particles cut alternating magnetic lines of force of the alternating magnetic field in the alternating magnetic field, and the current eddy currents enable the metal composite magnetic conductor particles to generate heat so that the naked smoke bomb releases smoke; the metal composite magnetic conductor particles are formed by mixing and sintering manganese-zinc ferrite doped with cerium oxide, ytterbium oxide and vanadium pentoxide and molybdenum disilicide powder doped with aluminum.
2. The electronic cigarette using electromagnetic heating according to claim 1, wherein the mass component ratio of the porous carrier material, the mixed powder, the tobacco extract mixture, the particle aggregation inhibitor, the binder and the metal composite magnetic conductor particles is: 20-30% of porous carrier material, 30-50% of mixed powder, 25-40% of tobacco extract mixture, 5-8% of particle aggregation inhibitor, 15-30% of binder and 5-25% of metal composite magnetic conductor particles.
3. The electronic cigarette using electromagnetic heating of claim 1, wherein the average particle size of the metal composite magnetic conductor particles is between 30 microns and 65 microns.
4. The electronic cigarette adopting electromagnetic heating of claim 1, wherein the manganese-zinc ferrite is prepared by mixing iron sesquioxide, manganese dioxide and zinc oxide according to a molar ratio of 52.5: 32: 12.5 as a main ingredient for carrying out raw material proportioning, uniformly mixing the main ingredient, putting the mixture into a ball mill, and carrying out primary ball milling grinding and refining, wherein the mass ratio of balls to materials to water in the primary ball milling is 5:1:1.5, the primary ball milling is carried out for 2 hours, the rotating speed of the ball mill is 300r/min, and the ball mill rotates forwards and backwards alternately every 0.5 hour; after primary ball milling is finished, feeding the ball-milled slurry into a vacuum drying oven for heating and drying; after heating and drying, the obtained powder is sent into a presintering furnace for presintering, the presintering temperature is 950 ℃, the presintering heat preservation time is 3 hours, and the presintering powder is cooled along with the furnace; adding cerium oxide, ytterbium oxide and vanadium pentoxide into the cooled powder material, mixing the cerium oxide, ytterbium oxide and vanadium pentoxide with mass percentages of 0.06-0.07-0.09% and aluminum-doped molybdenum disilicide powder with mass percentages of 0.2-0.6%, feeding the mixture into a ball mill for secondary ball milling, crushing and refining the powder material into a pre-sintered material, and exposing unreacted raw materials to complete reaction during sintering; the mass ratio of the balls to the materials to the water is 5:1:1.5 during secondary ball milling, the secondary ball milling is carried out for 3 hours, and then the mixture is sent into a vacuum drying oven to be dried; adding a PVA solution with the mass fraction of 15% into the dried powder as an adhesive, wherein the mass ratio of the powder to the PVA solution is 12:1, uniformly mixing the dried powder and the PVA solution, then carrying out spray granulation, sieving the obtained granules, screening out granules with the average particle size of 30-65 micrometers, sending the granules into a vacuum tube furnace, introducing a nitrogen-oxygen mixed gas with the oxygen partial pressure of 6%, carrying out heat preservation sintering at 1460 ℃ for 4.5 hours, introducing nitrogen into the vacuum tube furnace after the heat preservation is finished, and cooling the temperature of the granules to the room temperature to obtain the metal composite magnetic conductor granules.
5. The electronic cigarette of claim 4, wherein the matrix of the aluminum-doped molybdenum disilicide powder is Mo (Si) 0.7 Al 0.3 ) 2 。
6. The electronic cigarette adopting electromagnetic heating of claim 1, wherein an inner insulating layer is further arranged between the electromagnetic induction coil and the outer wall and the bottom of the cigarette magazine.
7. The electronic cigarette using electromagnetic heating according to claim 1, wherein the predetermined heating power formula is specifically:
wherein, P is the preset heating power output by the electromagnetic induction coil;
P max the maximum heating power which can be output by the electromagnetic induction coil;
t is the time counted from the start of the electronic cigarette adopting electromagnetic heating, and the unit is second;
when the heating power calculated according to the preset heating power formula is larger than the maximum heating power which can be output by the electromagnetic induction coil, the electromagnetic induction coil generates an alternating magnetic field with the maximum heating power which can be output.
8. The electronic cigarette according to claim 7, wherein a circuit protection device is further incorporated in the control circuit board, the circuit protection device is configured to detect a time when the electromagnetic induction coil generates the alternating magnetic field with the maximum heating power that can be output, and when the time when the electromagnetic induction coil generates the alternating magnetic field with the maximum heating power that can be output is longer than a predetermined time, the circuit protection device cuts off a power supply to the electromagnetic induction coil to stop heating.
9. The electronic cigarette using electromagnetic heating according to claim 8, wherein the predetermined time is 4 seconds to 6 seconds.
10. The electronic cigarette using electromagnetic heating according to claim 8, wherein the first time is 5 seconds to 7 seconds.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210675148.XA CN115067570A (en) | 2022-06-15 | 2022-06-15 | Electronic cigarette adopting electromagnetic heating |
| PCT/CN2023/100275 WO2023241635A1 (en) | 2022-06-15 | 2023-06-14 | Electromagnetic heating electronic cigarette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210675148.XA CN115067570A (en) | 2022-06-15 | 2022-06-15 | Electronic cigarette adopting electromagnetic heating |
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| Publication Number | Publication Date |
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| CN115067570A true CN115067570A (en) | 2022-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210675148.XA Pending CN115067570A (en) | 2022-06-15 | 2022-06-15 | Electronic cigarette adopting electromagnetic heating |
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| Country | Link |
|---|---|
| CN (1) | CN115067570A (en) |
| WO (1) | WO2023241635A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023241635A1 (en) * | 2022-06-15 | 2023-12-21 | 新火智造(深圳)有限公司 | Electromagnetic heating electronic cigarette |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107594634A (en) * | 2017-09-27 | 2018-01-19 | 武汉市腾宁新材料科技有限公司 | A kind of Electromagnetic Heating new type low temperature cigarette and preparation method and heating means |
| WO2019137235A1 (en) * | 2018-01-13 | 2019-07-18 | 深圳市新宜康科技股份有限公司 | Heat-not-burn device based on electromagnetic induction thermal field |
| CN108788127A (en) * | 2018-06-22 | 2018-11-13 | 深圳市新宜康科技股份有限公司 | The production method of powder Oil Guide atomization core based on electromagnetic induction |
| CN108634376B (en) * | 2018-07-23 | 2024-03-22 | 重庆中烟工业有限责任公司 | All-magnetic heating low-temperature baking smoking set |
| CN109553408A (en) * | 2018-12-31 | 2019-04-02 | 天长市中德电子有限公司 | A kind of preparation method of rear-earth-doped MnZn ferrite material |
| CN112369716A (en) * | 2020-06-24 | 2021-02-19 | 湖北中烟工业有限责任公司 | Cigarette without burning by heating and its preparing process |
| CN112205679A (en) * | 2020-10-10 | 2021-01-12 | 新火智造(深圳)有限公司 | Heating smoking set for environment-friendly heating non-burning naked cigarette bullet |
| CN214509408U (en) * | 2020-10-10 | 2021-10-29 | 新火智造(深圳)有限公司 | Heating assembly for naked cigarette cartridge and electronic smoking set thereof |
| CN112471590B (en) * | 2020-12-04 | 2021-11-02 | 新火智造(深圳)有限公司 | Environment-friendly wrapping-free heating non-combustion naked cigarette bomb |
| CN112515237B (en) * | 2020-12-04 | 2021-11-23 | 新火智造(深圳)有限公司 | Manufacturing method of environment-friendly wrapping-free heating non-combustion naked cigarette bomb |
| CN115067570A (en) * | 2022-06-15 | 2022-09-20 | 新火智造(深圳)有限公司 | Electronic cigarette adopting electromagnetic heating |
-
2022
- 2022-06-15 CN CN202210675148.XA patent/CN115067570A/en active Pending
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2023
- 2023-06-14 WO PCT/CN2023/100275 patent/WO2023241635A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023241635A1 (en) * | 2022-06-15 | 2023-12-21 | 新火智造(深圳)有限公司 | Electromagnetic heating electronic cigarette |
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| WO2023241635A1 (en) | 2023-12-21 |
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