CN210143835U - Coaxial heating chamber and electronic cigarette device with same - Google Patents
Coaxial heating chamber and electronic cigarette device with same Download PDFInfo
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- CN210143835U CN210143835U CN201920927606.8U CN201920927606U CN210143835U CN 210143835 U CN210143835 U CN 210143835U CN 201920927606 U CN201920927606 U CN 201920927606U CN 210143835 U CN210143835 U CN 210143835U
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Abstract
The utility model discloses a coaxial heating cavity and an electronic cigarette device with the same, which comprises a coaxial heating cavity formed by taking an outer conductor cavity as a cavity and taking an inner conductor column inserted into the outer conductor cavity from one end of the outer conductor cavity as an axis; the microwave source enters the coaxial heating cavity from one end of the inner conductor column inserted into the outer conductor cavity to carry out microwave transmission, so that the tobacco is heated by the microwaves. The coaxial transmitter and the coaxial heating cavity are used, and microwaves with frequencies of 915MHz and 2.45GHz can be transmitted in the coaxial transmitter and the coaxial heating cavity, so that a mature solid-state microwave device can be used, and particularly, the electricity conversion efficiency of 915MHz is higher; the size of the device can be effectively controlled; and because the microwave does not have the temperature, polar molecules in the tobacco directly move to generate heat through a high-frequency alternating electric field, the overall temperature of the tobacco is controlled to be 200-300 ℃, local high temperature does not exist, the whole coaxial heating cavity and the interior of the tobacco do not have higher temperature, cracking cannot occur, and aldehydes or other harmful substances cannot be generated.
Description
Technical Field
The utility model relates to an electron cigarette heating technology field especially relates to a coaxial heating chamber and have electron cigarette device in coaxial heating chamber.
Background
The temperature of the cigarette can reach 800-900 ℃ during combustion, 6000 chemical substances can be released due to chemical reactions of combustion, volatilization and thermal cracking of the tobacco, wherein only a smaller part of the chemical substances is originally contained in the tobacco and is volatilized by heating, and over 4000 chemical substances are newly generated after combustion and thermal cracking of the tobacco, such as polycyclic aromatic hydrocarbons, carbon monoxide, nitric oxide, olefin substances and the like, wherein over 400 carcinogenic substances exist, and the rest are basically harmful substances to human bodies. The harmful components are absorbed by human body along with the smoke gas, and then harm the health of smokers, and also cause the problem of second-hand smoke when released into the environment. Therefore, in order to prevent a large amount of harmful substances from being generated when the cigarette is burned, a low-temperature cigarette type electronic cigarette which is not burned by heating only is produced.
At present, two heating modes are available for the low-temperature cigarette type electronic cigarette, one mode is that a heating body heats a cigarette bullet through touch heat conduction, so that the cigarette bullet can be effectively heated only when the resistance temperature is increased to be higher due to the fact that a coking phenomenon appears on a resistor in the process of repeatedly heating the cigarette bullet, the resistance temperature can reach 400-500 ℃, and the problem that the temperature of the heating body is too high during working can be caused, so that the temperature of local tobacco contacting the heating body is too high, partial tobacco is cracked, and substances harmful to a human body are released.
One is heating by microwave, but the microwave cavity is formed by microwave, so that the size of the microwave cavity is difficult to meet due to microwave frequency limitation, the transmission loss of the formed microwave in the microwave cavity with the size is too large, the transmission distance is limited, tobacco cannot be uniformly heated, and sufficient tobacco volatile substance components cannot be released to meet the requirements of smokers, and the remote tobacco still can be heated only by conduction and loses the significance of microwave heating; if the diameter of the heating cavity is further increased, the portability is lost, and the microwave heating electronic cigarette technology is meaningless.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a coaxial heating chamber and have electron cigarette device in coaxial heating chamber, solved present defect that exists to low temperature cigarette formula electron cigarette heating method.
The purpose of the utility model is realized through the following technical scheme: a coaxial heating cavity comprises an outer conductor cavity and a coaxial heating cavity formed by taking an inner conductor column inserted into the outer conductor cavity from one end of the outer conductor cavity as a shaft; and a microwave source is inserted into the coaxial heating cavity from one end of the inner conductor column inserted into the outer conductor cavity to carry out microwave transmission, so that the tobacco is heated by microwaves.
The inner conductor column converts part of microwave high-frequency current into heat when microwave source enters the coaxial heating cavity to carry out microwave transmission to heat tobacco, so that auxiliary heating of tobacco is realized.
One end of the outer conductor cavity is a sealed end filled with insulating sealing materials, and the other end of the outer conductor cavity is an open end provided with an opening.
To prevent microwave leakage out of the open end from causing microwave damage to the smoker, the length of the inner conductor column is less than the length of the outer conductor cavity.
And the inner conductor column is inserted into the outer conductor cavity from the sealing end to form a microwave coaxial transmission structure.
And air inlet holes are formed in the upper side and the lower side of the sealing end and the outer conductor cavity and penetrate through the inner wall and the outer wall, and the air inlet holes are communicated with an air inlet channel for air inlet along the outer wall of the outer conductor cavity.
An electronic vaping device having a coaxial heating cavity, comprising:
a housing;
the coaxial heating cavity is arranged in the shell and used for containing tobacco with heating and realizing microwave and conductive heat composite heating of the tobacco;
a microwave transmitting module: a source for generating microwaves and emitting microwaves;
a coaxial transmitter: the microwave transmitting module is arranged between the microwave transmitting module and the coaxial heating cavity and is used for transmitting microwaves into the coaxial heating cavity;
a control module: the microwave emitting module is used for controlling the microwave power, the heating time and the start-stop interval output by the microwave emitting module.
The microwave transmitter comprises a control module and a microwave transmitting module, and is characterized by further comprising a battery module, wherein the battery module is electrically connected with the control module and the microwave transmitting module and supplies power to the control module and the microwave transmitting module.
The coaxial transmitter comprises an outer conductor and an inner conductor; the microwave heating cavity comprises an upper outer conductor and a lower outer conductor, wherein one end of the upper outer conductor and one end of the lower outer conductor are connected with the microwave emission module, and the other end of the upper outer conductor and the other end of the lower outer conductor are connected with the coaxial heating cavity; one end of the inner conductor is connected with the microwave transmitting module, and the other end of the inner conductor is connected with the inner conductor column.
The cigarette also comprises a low-temperature cigarette, wherein the low-temperature cigarette comprises tobacco and a cigarette holder; the tobacco is inserted into the coaxial heating cavity from the open end, and the mouthpiece is exposed outside the open end to facilitate smoking by a smoker.
The utility model has the advantages that: the utility model provides a coaxial heating chamber and have electron cigarette device in coaxial heating chamber has following advantage:
1. the coaxial heating cavity is adopted to smoothly guide microwave energy into the metal outer conductor cavity through the coaxial transmitter, so that the tobacco can be integrally and uniformly heated, and the condition of local high temperature cannot occur;
2. the microwave forms a relatively uniform high-frequency alternating electric field along the impedance inner conductor column, so that the tobacco in the coaxial heating cavity can be uniformly heated, and volatile substances in the tobacco are fully and uniformly volatilized; the impedance inner conductor column is a part of the coaxial heating cavity and is a microwave device, microwave high-frequency current is utilized to act on self resistance to heat, microwave damage is avoided, and heating can be realized without adding other devices and structures;
3. the impedance inner conductor column is made of metal or composite materials with high resistivity, can directly convert part of microwave high-frequency current into heat, enables the temperature of the impedance inner conductor column to rise to 100-300 ℃, can avoid adverse effects on tobacco heating caused by heat absorption due to large heat capacity and low temperature of a conventional inner conductor and self heat capacity, can assist microwave to heat tobacco simultaneously, enables the tobacco to rise to 200-300 ℃ rapidly, and enables volatile substances in the tobacco to be fully and uniformly volatilized;
4. because the coaxial transmitter and the coaxial heating cavity are used, microwaves with frequencies of 915MHz and 2.45GHz can be transmitted in the coaxial transmitter and the coaxial heating cavity, mature solid-state microwave devices can be used, and particularly, the electricity conversion efficiency of 915MHz is higher; accordingly, the size of the whole device can be effectively controlled;
5. because the microwave does not have temperature, polar molecules in the tobacco directly move to generate heat through a high-frequency alternating electric field, the overall temperature of the tobacco is controlled to be 200-300 ℃, local high temperature does not exist, the whole coaxial heating cavity and the interior of the tobacco do not have higher temperature, propylene glycol, glycerol and other components in the tobacco are not cracked due to high temperature, and aldehydes or other harmful substances are not generated;
6. in the coaxial heating cavity, the heating range can be easily controlled by changing the lengths of the inner conductor column and the outer conductor cavity, so that the heating requirements of tobaccos with different lengths can be met; meanwhile, the inner conductor column is shorter than the outer conductor cavity, because the diameter of the outer conductor cavity is far smaller than the diameter of the cut-off waveguide of the microwave frequency, and no section of the inner conductor column exists, the microwave cannot be transmitted and exists, and is shielded in the coaxial heater, so that the microwave cannot leak out from the opening for inserting the low-temperature cigarette, and the microwave cannot be damaged to a smoker;
7. the air inlet channel wraps the outside of the coaxial heating cavity, waste heat released by the coaxial heating cavity can be utilized to preheat gas, heat dissipation can be conducted on the outer side of the coaxial heating cavity, and the influence of overhigh temperature of the shell on user use experience is prevented.
Drawings
Fig. 1 is a block diagram of a coaxial heating chamber;
FIG. 2 is a block diagram of the apparatus;
FIG. 3 is a schematic diagram of the operation of the apparatus;
in the figure, 1-coaxial heating cavity, 11-outer conductor cavity, 12-inner conductor column, 13-sealed end, 14-insulating sealing material, 15-open end, 16-air inlet channel, 17-air inlet hole, 2-coaxial transmitter, 21-outer conductor, 22-inner conductor, 3-microwave emission module, 4-control module, 5-battery module, 6-shell, 7-low-temperature cigarette, 71-tobacco and 72-cigarette holder.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the utility model is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the term refers must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
The distribution and structure of the electromagnetic field in the microwave cavity are called modes, the larger the cavity is, the more complex the electromagnetic field is, the more the modes are, and conversely, the smaller the cavity is, the fewer the modes are. Therefore, the transmission and existence of the microwave in the microwave cavity are not unconditional, and at least one mode needs to be maintained in the cavity, so that the transmission of the microwave and the cross-sectional dimension of the microwave cavity have certain requirements, such as a circular tube-shaped cavity with the main mode of TE11 as an example, the calculation formula is as follows:
the microwave wavelength calculation formula 1 is: QUOTE
Wherein QUOTE
For speed of light, QUOTE
Is the microwave frequency;
cutoff wavelength calculation equation 2 is: QUOTE
Wherein QUOTE
The cut-off wavelength of the TE11 mode, and R is the radius of the circular tube type microwave cavity.
The microwave wavelength of each frequency is calculated according to equation 1 to be about:
the wavelength of the microwave with the frequency of 915MHz is about 327.87 mm, the wavelength of the microwave with the frequency of 2.45GHz is about 122.45mm, and the wavelength of the microwave with the frequency of 5.8GHz is about 51.72 mm
The cutoff wavelength for each frequency is calculated according to equation 2 to be about:
microwave cutoff of QUOTE at 915MHz
；
Microwave cut-off size QUOTE at a frequency of 2.45GHz
；
Microwave cut-off size QUOTE at a frequency of 5.8GHz
；
According to the above calculation, the main mold is a circular tube-shaped cavity of TE 11:
the diameter is more than or equal to 192mm, so that at least one microwave mode exists and microwaves are transmitted when the frequency is 915 MHz.
The diameter is more than or equal to phi 72mm, and at least one microwave mode exists and transmits microwaves at 2.45 GHz.
The diameter is more than or equal to phi 30.3mm, and at least one microwave mode exists and transmits microwaves at 5.8 GHz.
Therefore, the inventors have unexpectedly found that the apparatus for heating an electronic cigarette or a low temperature cigarette should be a portable microwave heating apparatus, and that it is not practical to have a microwave heating chamber that is too large. Although the minimum size of the cavity can be smaller as the microwave frequency is higher according to the calculation, in the industrial and civil heating fields, the mature and common microwave frequency is only 915MHz and 2.45GHz, while the technology of 5.8GHz is relatively immature, the high-power integration is difficult and the cost is high, so that the common microwave frequency of the small-size microwave heating device is 2.45G and 72mm, and even if the microwave frequency is 5.8GHz, the size of the circular tube cavity which is more than phi 30.3mm is unacceptable. Furthermore, according to the above theory, if a smaller size microwave entrance cavity is used, the microwaves are less transmitted and therefore cannot be transmitted.
Furthermore, the inventors have surprisingly found that if microwaves having a frequency of 2.45GHz are used, it is not considered that the microwave cavity needs at least 72mm directly, which leads to the problem of being not portable; the loss of 2.45GHz microwave in the cavity is also a problem, and in the case of a common low-temperature cigarette size, that is, the diameter of a cigarette cartridge is 7.5mm, assuming that the diameter of the heating cavity is twice that of a cigarette, that is, the diameter is 15mm, when the microwave frequency is 2.45GHz, after microwave energy is fed from one end, the microwave energy is transmitted by a TE11 mode, and theoretical calculation shows that the microwave energy is attenuated by 50% at 1.4 mm and 90% at 4.8 mm. That is, at such a size, the microwave can heat only one end of the cigarette by a length of 1 mm. Therefore, the tobacco cannot be heated uniformly and cannot release enough tobacco volatile substance components to meet the requirements of smokers, and the tobacco at a far position still can be heated only by conduction, so that the significance of microwave heating is lost.
As shown in fig. 1, a coaxial heating cavity includes an outer conductor cavity 11 as a cavity and an inner conductor column 12 inserted into the outer conductor cavity 11 from one end of the outer conductor cavity 11 as a shaft; the microwave source is inserted into the coaxial heating cavity from one end of the inner conductor column 12, which is inserted into the outer conductor cavity 11, and microwave transmission is carried out, so that the tobacco is heated by the microwaves.
Further, the outer conductor cavity 11 is a metal outer conductor cavity, and the outer shape structure thereof may include a circular tube, a square tube or a metal tube with other cross-sectional shapes, and the diameter and length thereof may be designed according to the diameter size and length of the electronic cigarette.
Furthermore, the diameter of the metal outer conductor cavity is phi 3-phi 20mm, and the length is phi 20-phi 100 mm.
The inner conductor column 12 converts part of microwave high-frequency current into heat when the microwave source enters the coaxial heating cavity for microwave transmission to heat the tobacco, so that auxiliary heating of the tobacco is realized.
To prevent microwave leakage from the open end from causing microwave damage to the smoker, the length of the inner conductor post 12 is smaller than the length of the outer conductor lumen 11.
Further, the inner conductor column 12 is a resistive inner conductor column made of metal or composite material with high resistivity, and the length thereof can be designed according to the length of the electronic cigarette.
Furthermore, the diameter of the impedance inner conductor column is phi 0.5-phi 5mm, the length is phi 3-phi 10mm, and the overall resistance is 5-200 ohms.
The inventor unexpectedly finds that the microwave cannot be transmitted in the cavity of the metal outer conductor with the diameter of phi 3-phi 20mm, and can be transmitted only by the heating cavity which is coaxially transmitted after the impedance inner conductor column is added, but because the mass of the heated object (tobacco) is very small and usually only 0.2-0.8g, the microwave has low loss after being heated, about 20-40% of microwave energy cannot be utilized, the energy is not wasted, and the solid microwave device can be damaged, the impedance inner conductor is made of a material with high resistivity, the residual microwave high-frequency current is directly converted into heat, the auxiliary heating of the tobacco is realized, so that the microwave energy can be fully utilized, the excessive temperature in the whole heating system is ensured, and the cracking of propylene glycol, glycerol and other components in the tobacco is avoided, without the formation of aldehydes or other harmful substances.
Part of microwave high-frequency current is converted into heat through a proper resistor of the impedance inner conductor column, and meanwhile, the microwave is transmitted into the metal outer conductor cavity of the coaxial heating cavity, so that the tobacco 71 of the low-temperature cigarette 7 inside the coaxial heating cavity is subjected to microwave and conduction heat composite heating at the same time, the whole body is uniformly heated to a proper temperature (200-300 ℃), and volatile substances in the tobacco 71 are fully and uniformly volatilized.
One end of the outer conductor cavity 11 is a sealed end 13 filled with an insulating sealing material 14, and the other end is an open end 15.
The insulation between the inner conductor column 12 and the coaxial heating cavity 1 and the coaxial transmitter 2 shell can be maintained by filling the sealing gasket 13 with the insulating sealing material 14, the air sealing between the coaxial heating cavity 1 and the microwave emission module 3 is realized, and smoke is prevented from entering the microwave emission module to damage the microwave emission module.
The inner conductor post 12 is inserted into the outer conductor cavity 11 from the sealed end 13 to form a microwave coaxial transmission structure.
Furthermore, after a small hole is formed in the center of the sealing end 13 and the small hole is filled with the insulating sealing material 14, the impedance inner conductor column penetrates into or is inserted into the metal outer conductor cavity from the center of the insulating sealing material 14, and forms a coaxial heating cavity with the metal outer conductor cavity, the low-temperature cigarette 7 is inserted from the opening end 15, and the impedance inner conductor column penetrates into the tobacco 71 part of the low-temperature cigarette 7.
Air inlet holes 17 are formed in the upper side and the lower side of the sealing end 13 and the outer conductor cavity 11 and penetrate through the inner wall and the outer wall, and the air inlet holes 17 are communicated with an air inlet channel 16 which admits air along the outer wall of the outer conductor cavity 11.
Further, the air inlet channel 16 is wrapped on the coaxial heating cavity 1, the channel size is 0.5-2mm, and the air inlet channel 16 also wraps the sealing end 13 of the coaxial heating cavity 1 and forms a seal; the air inlet channel 16 penetrates through the shell 1 at the opening end 15 of the coaxial heating cavity 1 to form an opening communicated with the outside; the tobacco 71 is heated, and the smoker sucks the tobacco with the mouth piece of the low-temperature cigarette 7, at the moment, the external air flow enters the coaxial heating cavity 1 through the air inlet channel 16 and the air inlet hole 17, and is mixed with volatile substances of the tobacco 71 and sucked out of the mouth piece 72 of the low-temperature cigarette 7 by the smoker.
As shown in fig. 2, an electronic vaping device with a coaxial heating cavity includes:
a housing 6;
the coaxial heating cavity 1 is arranged in the shell 6 and used for containing tobacco with heating and realizing microwave and conductive heat combined heating of the tobacco;
microwave transmitting module 3: a source for generating microwaves and emitting microwaves;
coaxial transmitter 2: the microwave transmitting module is arranged between the microwave transmitting module 3 and the coaxial heating cavity 1 and is used for transmitting microwaves into the coaxial heating cavity 1;
the control module 4: used for controlling the microwave power, the heating time and the start-stop interval output by the microwave transmitting module 3.
Further, the control module 4 includes a control circuit board, a switch control button, an indicator light or a display, etc.; the control circuit board is electrically connected with the switch control button and the indicator light or the display.
Because the coaxial transmitter and the coaxial heating cavity are used, microwaves with frequencies of 915MHz and 2.45GHz can be transmitted in the coaxial transmitter and the coaxial heating cavity, mature solid-state microwave devices can be used, and particularly, the electricity conversion efficiency of 915MHz is higher; accordingly, the size of the whole device can be effectively controlled.
Further, the microwave emitting module 3 may employ a solid-state microwave source.
The microwave transmitter further comprises a battery module 5, wherein the battery module 5 is electrically connected with the control module 4 and the microwave transmitting module 3, and supplies power to the control module 4 and the microwave transmitting module 3.
Further, the battery module 5 can be formed by connecting a plurality of button batteries in series.
The coaxial transmitter 2 comprises an outer conductor 21 and an inner conductor 22; the upper outer conductor and the lower outer conductor of the outer conductor 21 are connected, one ends of the upper outer conductor and the lower outer conductor are connected with the microwave emission module 3, and the other ends of the upper outer conductor and the lower outer conductor are connected with the coaxial heating cavity 1; one end of the inner conductor 22 is connected to the microwave radiation module 3, and the other end is connected to the inner conductor column 12.
The cigarette further comprises a low-temperature cigarette 7, wherein the low-temperature cigarette 7 comprises tobacco 71 and a cigarette holder 72; the tobacco 71 is inserted into the coaxial heating cavity 1 from the open end 15, and the cigarette holder 72 is exposed out of the open end 15 for the convenience of smoking by a smoker.
As shown in fig. 3, a smoker puts a low-temperature cigarette type electronic cigarette into the coaxial heating cavity 1 from the open end 15 of the coaxial heating cavity 1; meanwhile, a smoker controls to turn on a solid microwave source to generate microwaves through a switch control button, the microwaves are transmitted into a coaxial heating cavity 1 through a coaxial transmitter 2, the tobacco in the cavity is mainly heated through the microwaves, the remaining microwave high-frequency current is converted into heat through an impedance inner conductor column in the cavity, the tobacco in the cavity is heated in an auxiliary mode, and the microwave energy is fully utilized and the excessive temperature in the whole heating system is ensured at the same time through the composite heating of the microwaves and conductive heat, so that propylene glycol, glycerol and other components in the tobacco are prevented from cracking, and aldehydes or other harmful substances are not generated; a smoker ventilates through the air inlet channel 16 and the air inlet 17 in the smoking process, so that the waste heat released by the coaxial heating cavity can be used for preheating the gas, and the heat can be dissipated to the outer side of the coaxial heating cavity, so that the influence of overhigh temperature of the shell on the use experience of the user is prevented; in order to prevent microwave energy from overflowing to cause injury to smokers, the impedance inner conductor column is arranged to be shorter than the metal outer conductor cavity, and as the diameter of the metal outer conductor cavity is far smaller than the diameter of a cut-off waveguide of the microwave frequency, a section of microwave without the impedance inner conductor column cannot be transmitted and exists, the microwave is shielded in the coaxial heating cavity 1 and cannot leak out from an opening into which the low-temperature cigarette 7 is inserted, and microwave injury cannot be caused to the smokers.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A coaxial heating chamber, comprising: comprises a coaxial heating cavity which takes an outer conductor cavity (11) as a cavity and takes an inner conductor column (12) inserted into the outer conductor cavity (11) from one end of the outer conductor cavity (11) as an axis; a microwave source is inserted into the coaxial heating cavity from one end of the inner conductor column (12) of the outer conductor cavity (11) to transmit microwaves, so that the tobacco is heated by the microwaves.
2. The coaxial heating chamber of claim 1, wherein: the inner conductor column (12) converts part of microwave high-frequency current into heat when microwave source enters the coaxial heating cavity to carry out microwave transmission to heat tobacco, so as to realize auxiliary heating of tobacco.
3. The coaxial heating chamber of claim 1, wherein: one end of the outer conductor cavity (11) is a sealing end (13) filled with an insulating sealing material (14), and the other end is an opening end (15) provided with an opening.
4. The coaxial heating chamber of claim 3, wherein: in order to prevent microwave leakage from the open end to cause microwave damage to the smoker, the length of the inner conductor column (12) is less than the length of the outer conductor cavity (11).
5. The coaxial heating chamber of claim 4, wherein: the inner conductor column (12) is inserted into the outer conductor cavity (11) from the sealing end (13) to form a microwave coaxial transmission structure.
6. The coaxial heating chamber of claim 3, wherein: and air inlet holes (17) are formed in the upper side and the lower side of the sealing end (13) and the outer conductor cavity (11) and penetrate through the inner wall and the outer wall, and the air inlet holes (17) are communicated with an air inlet channel (16) for air inlet along the outer wall of the outer conductor cavity (11).
7. The utility model provides an electron cigarette device with coaxial heating chamber which characterized in that: the method comprises the following steps:
a housing (6);
the coaxial heating cavity (1) of any one of claims 1 to 6, which is arranged inside the housing (6) and is used for containing tobacco with heating and realizing microwave and conductive heat combined heating of the tobacco;
microwave transmitting module (3): a source for generating microwaves and emitting microwaves;
coaxial transmitter (2): the microwave transmitting module is arranged between the microwave transmitting module (3) and the coaxial heating cavity (1) and is used for transmitting microwaves into the coaxial heating cavity (1);
control module (4): the microwave heating device is used for controlling the microwave power, the heating time and the start-stop interval output by the microwave transmitting module (3).
8. An electronic vaping device with a coaxial heating cavity according to claim 7, wherein: the microwave oven is characterized by further comprising a battery module (5), wherein the battery module (5) is electrically connected with the control module (4) and the microwave transmitting module (3) and supplies power to the control module (4) and the microwave transmitting module (3).
9. An electronic vaping device with a coaxial heating cavity according to claim 7, wherein: the coaxial transmitter (2) comprises an outer conductor (21) and an inner conductor (22); the upper outer conductor and the lower outer conductor of the outer conductor (21), one end of the upper outer conductor and one end of the lower outer conductor are connected with the microwave emission module (3), and the other end of the upper outer conductor and the other end of the lower outer conductor are connected with the coaxial heating cavity (1); one end of the inner conductor (22) is connected with the microwave transmitting module (3), and the other end is connected with the inner conductor column (12).
10. An electronic vaping device having a coaxial heating cavity according to claim 7, wherein: the cigarette holder is characterized by also comprising a low-temperature cigarette (7), wherein the low-temperature cigarette (7) comprises tobacco (71) and a cigarette holder (72); the tobacco (71) is inserted into the coaxial heating cavity (1) from an open end (15), and the cigarette holder (72) is exposed out of the open end (15) so as to be convenient for a smoker to smoke.
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