CN211532783U

CN211532783U - Non-combustion smoking set and smoking article

Info

Publication number: CN211532783U
Application number: CN201921441869.4U
Authority: CN
Inventors: 林先其; 贾小翠; 刘东屹
Original assignee: Chengdu Yayan Technology Co ltd
Current assignee: Chengdu Yayan Technology Co ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-09-22
Anticipated expiration: 2029-09-02

Abstract

The embodiment of the application discloses a non-combustion smoking set and a smoking article, wherein the non-combustion smoking set is used for heating a smoking article substrate to be heated; the non-combustion smoking set comprises a transmission conductor, a transmission ground and a microwave feed-in port, wherein the transmission conductor, the transmission ground and the smoking article substrate to be heated form a microwave transmission line, the transmission ground is arranged around the transmission conductor to form a shielding cavity, and the transmission conductor is arranged in the shielding cavity; a shielding cover is arranged on the shielding cavity; the shielding cavity is used for placing the tobacco base body to be heated; the transmission conductor penetrates through the shielding cavity and is connected with the microwave feed-in port; the microwave feed-in port is used for accessing microwave signals. The non-burning smoking set of this application embodiment can the even heating smoking article, solves prior art smoking article heating and is heated the inequality and the inaccurate problem of heating temperature.

Description

Non-combustion smoking set and smoking article

Technical Field

The embodiment of the application relates to the technical field of microwave application, in particular to a non-combustion smoking set and a smoking article.

Background

With the transformation of the tobacco market, heated, non-combustible smoking regimes have gradually been developed, e.g., non-burning smoking articles.

In existing non-combustion smoking article constructions, a heating assembly is typically disposed within the interior of the non-combustion smoking article. The heating component is connected with the battery and is in direct or indirect contact with the tobacco tar. The battery supplies power and causes the heating assembly to heat, thereby heating the tobacco tar. However, the aerosol substrate is heated by battery-powered heat conduction. Most of the heating methods are from inside to outside or from outside to inside, and conduction heating is realized through the Joule effect, so that the defect of uneven heating exists.

SUMMERY OF THE UTILITY MODEL

Embodiments of the present application provide a non-combustion smoking article and smoking article to solve or mitigate one or more technical problems of the prior art.

As an aspect of embodiments of the present application, embodiments of the present application provide a non-combustion smoking article for heating a smoking article substrate to be heated; the non-combustion smoking set comprises a transmission conductor, a transmission ground and a microwave feed-in port, wherein the transmission conductor, the transmission ground and the smoking article substrate to be heated form a microwave transmission line, the transmission ground is arranged around the transmission conductor to form a shielding cavity, and the transmission conductor is arranged in the shielding cavity; a shielding cover is arranged on the shielding cavity; the shielding cavity is used for placing the tobacco base body to be heated; the transmission conductor comprises a first end, and the first end of the transmission conductor penetrates through the shielding cavity; the microwave feed-in port is connected with the first end; the microwave feed-in port is used for accessing microwave signals.

As an aspect of the embodiment of the present application, an embodiment of the present application provides a smoking article, including a smoking article body and a gas cooling cavity, where a first end of the gas cooling cavity is connected to the smoking article body, a second end of the gas cooling cavity is covered with a metal film, and a hole is disposed on the metal film, where the hole diameter is smaller than a wavelength of a microwave signal accessed by the microwave feed port; the smoking article body is used for being placed in a shielding cavity of a non-combustion smoking set, and the outer surface contact surface of the gas cooling cavity is in contact with the opening of the shielding cavity or the inner wall surface of the shielding cavity.

By adopting the technical scheme, the shielding cavity is formed in the transmission ground in the microwave transmission line, and the microwave signal energy transmitted by the microwave transmission line is absorbed and consumed by the tobacco base body to be heated in the process of being transmitted along the transmission conductor in the shielding cavity. The tobacco base body to be heated can be uniformly heated and generate smoke through energy absorption and consumption, and the problem that the tobacco is heated unevenly through heat conduction in the prior art is solved. Moreover, the heating temperature of the tobacco base body to be heated can be accurately controlled by controlling the power of the microwave signal.

The foregoing summary is provided for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will be readily apparent by reference to the drawings and following detailed description.

Drawings

In the drawings, like reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily to scale. It is appreciated that these drawings depict only some embodiments in accordance with the disclosure and are therefore not to be considered limiting of its scope.

Figure 1 shows a schematic structural view of a non-combustion smoking article according to an embodiment of the present application.

Figure 2 shows a schematic structural view of a non-combustion smoking article according to an embodiment of the present application.

Fig. 3 shows a schematic structural diagram of a shielding cavity according to an embodiment of the present application.

Figure 4 shows a schematic of the structure of a non-combustion smoking article according to an embodiment of the present application.

Fig. 5-7 show schematic diagrams of microwave transmission sections according to embodiments of the present application.

Figure 8 shows a schematic of a non-combustion smoking article according to an embodiment of the present application.

Fig. 9 shows a schematic structural diagram of a microwave waveform according to an embodiment of the present application.

Figure 10 shows a schematic diagram of an example structure of a non-combustion smoking article of an embodiment of the present application.

Figure 11 shows a schematic structural view of a smoking article according to an embodiment of the application.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present application. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

As an exemplary implementation, fig. 1 shows a schematic structural view of a non-combustion smoking article according to an embodiment of the present application. The non-burning smoking article is used to heat the smoking article substrate 30 to be heated. The form of the smoking article substrate 30 to be heated may include a solid or liquid form. Such as tobacco or tobacco tar. As shown in fig. 1, the non-combustion smoking article includes a transmission conductor 10, a transmission ground, and a microwave feed port. Disposed transmissively around the transmission conductor 10 forms a shielded cavity 40, with the transmission conductor 10 disposed within the shielded cavity 40. The smoking article substrate 30 to be heated can be placed in the shielding cavity 40, and the smoking article substrate 30 to be heated can be regarded as a medium in a microwave transmission line, and forms the microwave transmission line together with the transmission conductor 10 and the shielding cavity 40. The shield cavity 40 is provided with a shield cover 50. When the shielding cover 50 is opened, the tobacco base 30 to be heated can be put into the shielding cavity 40 or the inner chamber of the shielding cavity 40 can be cleaned. When the shielding cover 50 is closed, a sealed chamber is formed with the shielding cavity 40 to prevent leakage of microwave energy. One or more shield covers 50 may be provided.

The transmission conductor 10 penetrates through the shielding cavity 40 and is connected with the microwave feed-in port. The microwave feed-in port is used for accessing microwave signals. In some embodiments, the end surface of the transmission conductor 10 penetrating the shielding cavity 40 may be exposed to the outer surface of the shielding cavity 40, and coupled to the microwave signal source. Illustratively, the port may be a portion that protrudes from an outer surface of the shielded cavity 40 or may be flush with the shielded cavity 40. The energy of the microwave signal is absorbed and consumed by the smoking article substrate 30 to be heated during the transmission of the energy in the transmission line, so that microwave heating is realized and smoke is generated.

In some embodiments, as shown in fig. 2, the non-combustion smoking article may further comprise a secondary media 20. The auxiliary medium 20 is disposed in the shielding cavity 40 and is used for isolating the transmission conductor 10 from the smoking article substrate 30 to be heated so as to prevent the transmission conductor 10 and the smoking article substrate 30 to be heated from being in direct contact and causing damage to the transmission conductor 10. For example, rusting, corrosion, or leaving harmful substances on the transmission conductor 10 may occur on the transmission conductor 10. In some embodiments, the secondary media 20 may comprise one or more of air, plastic, PCB board, or ceramic.

As an exemplary embodiment, the smoking article substrate 30 to be heated has a loss tangent greater than the loss tangent of the secondary medium 20, i.e., the non-burning smoking article is used to heat a smoking article substrate 30 to be heated having a loss tangent greater than the loss tangent of the secondary medium 20. Since the loss tangent of the smoking article substrate 30 to be heated is greater than the loss tangent of the auxiliary medium 20, more energy is lost to the smoking article substrate 30 to be heated, which is highly energy-consuming, and heating of the smoking article substrate 30 to be heated is achieved.

Illustratively, the loss tangent of the auxiliary medium 20 is less than 0.02. The loss tangent of the auxiliary medium 20 is less than 0.02, so that the loss tangent of the auxiliary medium 20 can be ensured to be less than that of most of smoking articles with heating requirements, and the heating requirements of most of the current smoking articles are met. Further, by using the critical value of 0.02 rather than an excessively small loss tangent as the critical value, the degree of influence of the auxiliary medium 20 on the heating effect can be increased, and the adjustability of the heating effect can be improved.

The auxiliary medium 20 may be air or ceramic, for example. Air or ceramic is a common object with a small loss tangent, so that the heating effect is ensured, and meanwhile, the cost and the realization difficulty of the microwave heating device are reduced.

By way of example, the auxiliary medium 20 may be used to support the smoking article substrate 30 to be heated. The auxiliary medium 20 may be a substrate, which is disposed on the surface of the transmission conductor 10 and supports and isolates the smoking article substrate 30 to be heated.

As an exemplary embodiment, the non-combustion smoking article may further include an impedance match 60, as shown in fig. 3. The impedance matching member 60 and the auxiliary medium 20 cooperate with each other to form impedance matching for the transmission conductor 10. The transmission conductor 10 may be disposed between the impedance matching member 60 and the auxiliary medium 20.

Illustratively, as shown in fig. 3, the shielding cavity 40 includes an auxiliary medium 20, a transmission conductor 10, an impedance matching member 60, and an electromagnetic shield 70. The auxiliary medium 20 may be provided as a substrate of the transmission conductor 10 on one side surface of the transmission conductor 10. The other side surface of the transmission conductor 10 is connected to the fixing member 80 and fixed in the electromagnetic shield 70 by the fixing member 80. An impedance matching member 60 may be disposed between the transmission conductor 10 and the electromagnetic shield 70, the impedance matching member 60 and the auxiliary medium 20 cooperating to impedance match the transmission conductor 10. The non-combustion smoking article may include one or more shielded cavities 40. Where the non-combustion smoking article includes a plurality of shielded cavities 40, a plurality of smoking articles may be heated.

Illustratively, one or more shield covers 50 may be disposed on the shield cavity 40, and the material of the shield covers 50 has good electrical conductivity. The shield cover 50 may be magnetic and magnetically attracted to the electromagnetic shield 70 to facilitate closing the shielded cavity 40. And, the shield cover 50 may be adhered to the electromagnetic shield 70 after the shield cover 50 may be opened.

Illustratively, one or more openings are provided on the shield cavity 40 or on the shield cover 50. The shape of the opening may be hole-shaped, square-shaped or irregular. The openings may serve as inlets for air and also as outlets for smoke. The maximum aperture of the opening is smaller than the wavelength of the microwave signal of the microwave feed-in port.

In the above embodiment, the input characteristic impedance value of the shielding cavity 40 closing the shielding cover 50 may be standard 25 ohms, 50 ohms, 75 ohms, 100 ohms, or the like.

On the basis of any of the above embodiments, as an exemplary embodiment, as shown in fig. 4, the transmission conductor 10 may further include a first end 11 and a second end 13, the first end 11 is connected to the microwave feed port, the second end 13 is disposed in the shielding cavity 40, and the second end 13 is disposed in an open circuit or a short circuit with the shielding cavity 40. An open circuit may be where second end 13 is not in direct contact with shielded cavity 40 and a short circuit may be where second end 13 is in direct contact with shielded cavity 40.

Illustratively, as shown in fig. 4, the transmission conductor 10 further includes a microwave transmission section 12. The microwave transmission section 12 is disposed in the shielding cavity 40, and the microwave transmission end may be in a shape of a coil spring.

As shown in fig. 5 to 7, the microwave transmission section 12 may also be in a meander line shape. Or a plurality of parts can be bent to form a fishfork shape or a hollow column shape. For example, as shown in fig. 7, the microwave transmitting section of the transmitting conductor is surrounded to form a columnar structure having an internal cavity. The microwave transmission section may form the columnar structure around a central axis, and the inner cavity may contain an object to be heated or an auxiliary medium. Illustratively, the microwave transmission section may be formed by bending at a plurality of locations to form the sides of the columnar structure.

The transmission conductor 10 includes one or more bends or spirals in the shielded cavity 40 to increase the transmission path in a limited space and to increase the heating speed and efficiency.

As an exemplary embodiment, a schematic view of a non-burning smoking article is shown in fig. 8. The non-combustion smoking article of any of the above embodiments further comprises a microwave generator 201. The microwave output end of the microwave generator 201 is connected to the microwave feed-in port. Wherein, the number of the microwave generator 201 and the number of the electronic cigarette can be one or more respectively. The microwave generator 201 may include a semiconductor microwave generator or an electric vacuum microwave generator.

Illustratively, the microwave signal output by the microwave generator 201 may be pulsed microwaves or continuous microwaves. The pulse microwave is discontinuous wave, which can save the power consumption of the heating process while keeping the temperature stable. The output characteristic impedance value of the microwave generator 201 may be a standard 25 ohm, 50 ohm, 75 ohm, 100 ohm, etc.

Illustratively, the microwave generator 201 may further include a controller 202. The controller 202 may set one or more of a waveform, a frequency, an operating phase, a power, and a duty cycle of the microwave signal output by the microwave generator 201. For example, the controller 202 may set the microwave signal output by the microwave generator 201 to be a square wave, a sine wave, a triangular wave, or the like. The controller 202 may also set the microwave generator 201 to output a phase modulated or frequency modulated microwave signal. The free combination of various waveforms, frequencies, working phases, powers and duty ratios can correspond to various working modes. The embodiment of the application provides the microwave generator 201 with adjustable waveform, frequency, working phase, power and duty ratio, and the heating effect of the microwave transmission line can be flexibly adjusted.

Illustratively, the non-combustion smoking article may further comprise a microwave signal amplifier 203. A microwave signal amplifier 203 may be disposed between the microwave generator 201 and the microwave feed end of the non-combustion smoking article. The microwave signal amplifier 203 is used to amplify the microwave signal. The output characteristic impedance values of the microwave generator 201 and the microwave signal amplifier 203 may be standard 25 ohms, 50 ohms, 75 ohms, 100 ohms, etc.

Illustratively, the non-combustion smoking article may further comprise a power supply 204 connected to a power supply port of the microwave generator 201 for providing electrical power to the microwave generator 201. The power source may be a direct current power source and may include a battery, a DC-DC power source, or an AC-DC power source, among others. The power supply may also include a voltage boost, buck, or regulator circuit, among others. The controller 202 in the non-burning smoking article may also control the switching of the power supply, the output voltage, the output power, etc.

Illustratively, the non-combustion smoking article may also include a sensor 205. For example, the non-combustion smoking article includes a temperature sensor, which may be disposed in the shielded cavity 40 of the non-combustion smoking article, for monitoring the temperature in the microwave heating device in real time and feeding back to the controller 202, so that the controller 202 adjusts various operational attributes of the non-combustion smoking article according to the real-time temperature. For example, the non-burning smoking article includes a power sensor for detecting the emission power of the microwave generator 201 and feeding back to the controller 202, such that the controller 202 adjusts various operational attributes of the non-burning smoking article according to the emission power. The operational attributes may include the temperature or duration of heating, the concentration of particles that the generated smoke can contain, and the like.

Illustratively, the non-burning smoking article may further include a network module 206, and the network module 206 is configured to record status information and usage information of the non-burning smoking article, and transmit the status information and the usage information to a server via a network. The status information may include, for example, the temperature of the non-burning smoking article or the output power of the microwave generator 201. The usage information may be, for example, a heating target temperature, a heating time period, a heating pattern, or the like. The network module 206 may be disposed inside the microwave generator 201 or may be disposed outside the microwave generator 201.

Referring to fig. 9, the waveform of the microwaves transmitted by the transmission conductor is shown. The microwave energy forms a travelling wave state at the first end 11 of the transmission conductor 10. The traveling wave is absorbed by the medium (including the auxiliary medium 20 and/or the object to be heated) while being transmitted and converted into thermal energy. If transmitted to the second end 13 due to an open circuit condition, the traveling wave may reflect back to form a standing or traveling standing wave.

Referring to fig. 10, a practical configuration of a non-burning smoking article is shown. The e-cigarette further comprises a housing 44 provided with a first opening 41, the shielding cavity 40 being formed inside the housing 44. The opening of the shielding cavity 40 meets the first opening 41. The opening of the shielding cavity 40 is flush with the first opening 41 or slightly protrudes out of the first opening 41, and the other end corresponding to the opening of the shielding cavity 40 is provided with a microwave feed-in port, which is connected with the microwave output end of the microwave generator. Illustratively, 43 is a connection end between the microwave feed port and the microwave output end of the microwave generator, as shown in fig. 10. The shield cover 51 of the shield cavity 40 may cover the opening of the shield cavity 40 and also the first opening 41 of the housing 44.

In some embodiments, the housing 44 may also include a microwave generator disposed within the housing but outside of the shielded cavity, possibly adjacent to the shielded cavity. The microwave output end of the microwave generator is connected with the microwave feed-in port.

Illustratively, a filter (not shown) is disposed in the shielding cover 51 of the first opening 41, so as to filter large particulate matters and improve the use comfort of the user. After the use is finished, the shielding cover 51 of the first opening 41 can be opened, so that the shielding cover 51 can not cover the first opening 41 any more. The smoking article substrate 30 to be heated is then removed from the shielded cavity 40.

For example, the non-combustion smoking article may further include a second opening 42 in the housing 44, and the first opening 41 and the second opening 42 are disposed at two opposite ends or two opposite sides of the housing 44. The shielding chamber 40 is provided with two openings and meets with a first opening 41 and a second opening 42 of a housing 44, respectively. The shielding cavity 40 extends through the housing 44 from the first opening 41 to the second opening 42. Alternatively, the shielding cavity 40 extends through the housing 44 from the second opening 42 to the first opening 41. The shielding chamber 40 is provided with two shielding covers (51, 52) which cover the two openings of the shielding chamber 40, respectively, and which also cover the first opening 41 and the second opening 42. After removal of the smoking article substrate 30 to be heated, the shield cover 52 of the second opening 42 may be opened to clean the interior of the shielded cavity 40. In some embodiments, the shielding cavity 40 may be cylindrical, that is, hollow column, the inner surface of the shielding cavity 40 is provided with the auxiliary medium 20 for isolating the transmission conductor 10 from the smoking article substrate 30 to be heated, and the auxiliary medium 20 is uniformly distributed on the inner surface of the shielding cavity 40, so that the inner surface of the shielding cavity 40 is smooth, and the residual substance of the smoking article substrate 30 to be heated is convenient to clean.

Referring to fig. 11, fig. 11 shows a configuration of a smoking article for use with a non-burning smoking article. The smoking article 30 comprises a smoking article body 31 (a smoking article substrate to be heated) and a gas cooling cavity 32, wherein a first end of the gas cooling cavity 32 is connected with the smoking article substrate 31 to be heated, and the end surface of a second end of the gas cooling cavity 32 is covered with a metal film 321. The metal film 321 is provided with a hole 322, and the aperture of the hole 322 is smaller than the wavelength of the microwave signal accessed by the microwave feed-in port. The smoking article 30 is intended to be placed within the shielded cavity 40 of a non-burning smoking article, the shape of the smoking article 30 matching the cavity shape of the shielded cavity 40. For example, where the shielded cavity 40 is hollow and cylindrical, the smoking article 30 may be in the shape of a cylinder, the diameter of the cross-section of the smoking article 30 being smaller than the diameter of the inner cross-section of the shielded cavity 40. An end surface of the second end of the gas cooling cavity 32 is aligned with the opening of the shielding cavity 40 or slightly protrudes from the opening of the shielding cavity 40, and an outer contact surface of the gas cooling cavity 32 may contact the opening of the shielding cavity 40 or an inner wall surface of the shielding cavity 40, and for example, the outer contact surface of the gas cooling cavity 32 may be attached to the opening of the shielding cavity 40 or the inner wall surface of the shielding cavity 40. The metal film 321 may correspond to the shielding cover, and may be air permeable and may greatly reduce electromagnetic wave leakage.

In some embodiments, the metal film 321 extends to the outer contact surface of the gas cooling cavity 32, forming a metal contact surface 323. The metal contact surface 323 may be a stepped contact surface or a flat surface, and the metal contact surface may completely or partially cover the outer contact surface of the gas cooling cavity 32. The metal contact surface 323 contacts the opening of the shielding cavity 40 or the inner wall surface of the shielding cavity 40, which is beneficial to the good shielding effect formed by the contact of the metal contact surface and the shielding cavity when the tobacco product base 31 to be heated is placed in the shielding cavity 40, and the electromagnetic wave leakage is greatly reduced.

In some embodiments, the smoking article 30 further comprises a filter 34, the filter 34 being connected to the second end of the gas cooling cavity 32. The gas cooling cavity 32 can be sleeved in the filter 34 partially or completely, and particulate matters in the gas emitted from the gas cooling cavity 32 are filtered, so that the use comfort of a user is improved.

In some embodiments, the outer surface of the filter 34 may also be covered with a metal layer. The metal layer may cover all or part of the outer surface of the filter 34. However, the metal layer covers at least the connecting edges of the filter 34 and the gas cooling cavity 32. The metal layer may be in contact with the metal contact surface 323 or the metal film 321 on the surface of the gas cooling chamber 32, or may be integrally connected with the metal contact surface 323 or the metal film 321 on the surface of the gas cooling chamber 32.

It should be understood that the embodiments of the present application may also have other application manners, and are not limited to the above application examples. The technical features in the embodiments and application examples of the present application can be freely combined without contradiction.

In the description of the present specification, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The above disclosure provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various changes or substitutions within the technical scope of the present application, and these should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A non-combustion smoking article, wherein the non-combustion smoking article is for heating a smoking article substrate to be heated; the non-combustion smoking set comprises a transmission conductor, a transmission ground and a microwave feed-in port, wherein the transmission conductor, the transmission ground and the smoking article substrate to be heated form a microwave transmission line, the transmission ground is arranged around the transmission conductor to form a shielding cavity, and the transmission conductor is arranged in the shielding cavity; a shielding cover is arranged on the shielding cavity; the shielding cavity is used for placing the tobacco base body to be heated;

the transmission conductor penetrates through the shielding cavity and is connected with the microwave feed-in port; the microwave feed-in port is used for accessing microwave signals.

2. The non-combustion smoking article of claim 1, further comprising an auxiliary medium disposed within the shielded cavity, the auxiliary medium serving to isolate the transmission conductor from the smoking article substrate to be heated.

3. A non-combustion smoking article according to claim 2, wherein the loss tangent of the smoking article substrate to be heated is greater than the loss tangent of the secondary medium.

4. The non-combustion smoking article of claim 2, further comprising an impedance matching member, wherein the transmission conductor is disposed between the impedance matching member and the auxiliary media, and wherein the impedance matching member and the auxiliary media cooperate to form an impedance match to the transmission conductor.

5. The non-combustion smoking article of claim 2, wherein the shielded cavity is magnetically attracted to the shielded lid.

6. The non-combustion smoking article of claim 2, wherein the loss tangent of the secondary medium is less than 0.02.

7. The non-combustion smoking article of any one of claims 1 to 6, wherein the transmission conductor comprises a first end and a second end, the first end being connected to the microwave feed port, the second end being disposed within the shielded cavity, the second end being disposed in an open or short circuit arrangement with the shielded cavity.

8. The non-combustion smoking article of any one of claims 1-6, wherein the transmission conductor further comprises a microwave transmission section disposed within the shielded cavity, the microwave transmission section being in the form of a meander wire, a coil spring, a fishbone, or a hollow cylinder.

9. A non-combustion smoking article according to any one of claims 1 to 6, wherein said cavity or cover is provided with an aperture having a diameter smaller than the wavelength of the microwave signal received at said microwave feed port.

10. A non-combustion smoking article according to any one of claims 1 to 6, further comprising a microwave generator, the microwave output of which is connected to the microwave feed port.

11. The non-combustion smoking article of claim 10, wherein the non-combustion smoking article further comprises a controller; the controller is used for setting one or more of waveform, frequency, working phase, power and duty ratio of the microwave signal output by the microwave generator.

12. The non-combustion smoking article of claim 1, further comprising a housing having a first opening, wherein the shielded cavity is formed in the housing and the opening of the shielded cavity is engaged with the first opening of the housing, and wherein a shield cover of the shielded cavity covers the first opening to cover the opening of the shielded cavity.

13. The non-combustion smoking article of claim 12, wherein said housing further comprises a microwave generator disposed outside said shielded cavity but within said housing, a microwave output of said microwave generator being connected to said microwave feed port.

14. The non-combustion smoking article of claim 12, wherein said housing further defines a second opening, said shielded cavity extends through said housing from said first opening to said second opening, said shielded cavity includes two openings that respectively engage said first opening and said second opening, said shielded cavity defines two shield covers that respectively cover said first opening and said second opening to cover said shielded cavity openings.

15. The non-combustible smoking article of claim 12, wherein the shield cap comprises a filter.

16. The non-combustion smoking article of claim 12, wherein the shielded cavity is hollow cylindrical.

17. A smoking article, comprising: the cigarette comprises a cigarette body and a gas cooling cavity, wherein a first end of the gas cooling cavity is connected with the cigarette body, a second end of the gas cooling cavity is covered with a metal film, a hole is formed in the metal film, and the aperture of the hole is smaller than the wavelength of a microwave signal accessed from a microwave feed-in port of a non-combustion smoking set; the smoking article is used for being placed in a shielding cavity of the non-combustion smoking set, and the outer surface contact surface of the gas cooling cavity is in contact with the opening of the shielding cavity or the inner wall surface of the shielding cavity.

18. A smoking article according to claim 17, wherein the second end cap metal film extends to the exterior contact surface of the gas cooling cavity to form a metal contact surface.

19. A smoking article according to claim 17 or 18, further comprising a filter connected to the second end of the gas cooling cavity.

20. A smoking article according to claim 19, wherein the outer surface of the filter is covered with a metal layer, said metal layer covering at least the connecting edge of the filter to the gas cooling cavity.