Non-combustion smoking accessories and products

Abstract

The embodiment of the present application discloses a non-combustion smoking device and a tobacco product, wherein the non-combustion smoking device is used to heat a substrate of a tobacco product to be heated; the non-combustion smoking device comprises a transmission conductor, a transmission ground and a microwave feed port, wherein the transmission conductor, the transmission ground and the substrate of the tobacco product 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 to place the substrate of the tobacco product to be heated; the transmission conductor runs through the shielding cavity and is connected to the microwave feed port; the microwave feed port is used to access a microwave signal. The non-combustion smoking device of the embodiment of the present application can heat tobacco products evenly, solving the problems of uneven heating of tobacco products and inaccurate heating temperature in the prior art.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of microwave application technology, and in particular to a non-combustion smoking utensil and smoking product. Background Art

[0002] With the transformation of the tobacco market, heat-not-burn smoking methods are gradually being promoted, for example, non-combustion smoking devices.

[0003] In the existing non-combustion smoking device structure, a heating component is generally arranged inside the non-combustion smoking device. The heating component is connected to a battery, and the heating component is in direct or indirect contact with the smoke oil. The battery supplies power and causes the heating component to generate heat, thereby heating the smoke oil. However, the smoke matrix is ​​heated by heat conduction powered by a battery. Most of them are conducted from the inside to the outside or from the outside to the inside, and the heating is achieved through the Joule effect, which has the defect of uneven heating. Summary of the invention

[0004] The embodiments of the present application provide a non-combustion smoking device and a smoking product to solve or alleviate one or more technical problems in the prior art.

[0005] As one aspect of an embodiment of the present application, the embodiment of the present application provides a non-combustion smoking device, which is used to heat a tobacco product substrate to be heated; the non-combustion smoking device includes a transmission conductor, a transmission ground and a microwave feeding port, the transmission conductor, the transmission ground and the tobacco product 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 provided on the shielding cavity; the shielding cavity is used to place the tobacco product substrate to be heated; the transmission conductor includes a first end, and the first end of the transmission conductor passes through the shielding cavity; the microwave feeding port is connected to the first end; the microwave feeding port is used to access microwave signals.

[0006] As one aspect of an embodiment of the present application, the embodiment of the present application provides a tobacco product, including a tobacco product body and a gas cooling cavity, wherein the first end of the gas cooling cavity is connected to the tobacco product body, and the second end of the gas cooling cavity is covered with a metal film, wherein the metal film is provided with a hole, and the aperture of the hole is smaller than the wavelength of the microwave signal connected to the microwave feeding port; the tobacco product body is used to be placed in a shielding cavity of a non-combustion smoking device, and the outer contact surface of the gas cooling cavity contacts the opening of the shielding cavity or the inner wall of the shielding cavity.

[0007] The embodiment of the present application adopts the above technical solution, the transmission ground in the microwave transmission line forms a shielding cavity, and the microwave signal energy transmitted by the microwave transmission line is absorbed and consumed by the substrate of the tobacco product to be heated during the transmission along the transmission conductor in the shielding cavity. The substrate of the tobacco product to be heated can be evenly heated and produce smoke through energy absorption and consumption, solving the problem of uneven heating of tobacco products heated by heat conduction in the prior art. Moreover, the heating temperature of the substrate of the tobacco product to be heated can be accurately controlled by controlling the power of the microwave signal.

[0008] The above summary is for illustrative purposes 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 accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0010] Figure 1 A schematic structural diagram of a non-combustion smoking device according to an embodiment of the present application is shown.

[0011] Figure 2 A schematic structural diagram of a non-combustion smoking device according to an embodiment of the present application is shown.

[0012] Figure 3 A schematic structural diagram of a shielding cavity according to an embodiment of the present application is shown.

[0013] Figure 4 A schematic structural diagram of a non-combustion smoking device according to an embodiment of the present application is shown.

[0014] Figures 5 to 7 A schematic diagram of a microwave transmission section according to an embodiment of the present application is shown.

[0015] Figure 8 A schematic structural diagram of a non-combustion smoking device according to an embodiment of the present application is shown.

[0016] Fig. 9 A schematic structural diagram of a microwave waveform according to an embodiment of the present application is shown.

[0017] Fig.10 A schematic diagram showing an example structure of a non-combustion smoking article according to an embodiment of the present application.

[0018] Fig.11 A schematic structural diagram of a tobacco product according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0019] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0020] As an exemplary embodiment, Figure 1 The schematic diagram of the structure of the non-combustion smoking device according to the embodiment of the present application is shown. The non-combustion smoking device is used to heat the smoking product substrate 30 to be heated. The form of the smoking product substrate 30 to be heated may include solid or liquid. For example, tobacco or smoke oil. Figure 1 As shown, the non-combustion smoking device includes a transmission conductor 10, a transmission ground and a microwave feeding port. The transmission ground is arranged around the transmission conductor 10 to form a shielding cavity 40, and the transmission conductor 10 is arranged in the shielding cavity 40. The substrate 30 of the tobacco product to be heated can be placed in the shielding cavity 40. The substrate 30 of the tobacco product to be heated can be regarded as a medium in the microwave transmission line, and together with the transmission conductor 10 and the shielding cavity 40, it constitutes a microwave transmission line. A shielding cover 50 is arranged on the shielding cavity 40. When the shielding cover 50 is opened, the substrate 30 of the tobacco product to be heated can be placed in the shielding cavity 40, or the inner chamber of the shielding cavity 40 can be cleaned. When the shielding cover 50 is closed, it forms a sealed chamber with the shielding cavity 40 to prevent microwave energy leakage. One or more shielding covers 50 can be provided.

[0021] The transmission conductor 10 passes through the shielding cavity 40 and is connected to the microwave feed port. The microwave feed port is used to access the microwave signal. In some embodiments, the end face of the transmission conductor 10 passing through the shielding cavity 40 can be exposed to the outer surface of the shielding cavity 40 and coupled with the microwave signal source. Exemplarily, this port can be a part protruding relative to the outer surface of the shielding cavity 40, or it can be flush with the shielding cavity 40. During the process of microwave signal energy being transmitted in the transmission line, it is absorbed and consumed by the tobacco product substrate 30 to be heated, achieving microwave heating and generating smoke.

[0022] In some embodiments, Figure 2 As shown, the non-combustion smoking device may further include an auxiliary medium 20. The auxiliary medium 20 is disposed in the shielding cavity 40, and is used to isolate the transmission conductor 10 and the substrate 30 of the smoking article to be heated, so as to prevent the transmission conductor 10 from directly contacting the substrate 30 of the smoking article to be heated, thereby causing harm to the transmission conductor 10. For example, the transmission conductor 10 may be rusted or corroded, or harmful substances may be left on the transmission conductor 10. In some embodiments, the auxiliary medium 20 may include one or more of air, plastic, PCB board, or ceramic.

[0023] As an exemplary embodiment, the loss tangent of the tobacco article substrate 30 to be heated is greater than the loss tangent of the auxiliary medium 20, that is, the non-combustion smoking device is used to heat the tobacco article substrate 30 to be heated whose loss tangent is greater than the loss tangent of the auxiliary medium 20. Since the loss tangent of the tobacco article substrate 30 to be heated is greater than the loss tangent of the auxiliary medium 20, more energy is lost in the high-loss tobacco article substrate 30 to be heated, thereby achieving heating of the tobacco article substrate 30 to be heated.

[0024] For example, 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, which can ensure that the loss tangent of the auxiliary medium 20 is less than the loss tangent of most tobacco products with heating requirements, and meet the heating requirements of most types of tobacco products at present. In addition, using 0.02 as the critical value instead of using an excessively small loss tangent value as the critical value can increase the influence of the auxiliary medium 20 on the heating effect and improve the adjustability of the heating effect.

[0025] For example, the auxiliary medium 20 may be air or ceramics. Air or ceramics are common objects with a small loss tangent, which can reduce the cost and implementation difficulty of the microwave heating device while ensuring the heating effect.

[0026] Exemplarily, the auxiliary medium 20 can be used to support the tobacco article substrate 30 to be heated. The auxiliary medium 20 can be used as a substrate, disposed on the surface of the transmission conductor 10, to support and isolate the tobacco article substrate 30 to be heated.

[0027] As an exemplary embodiment, Figure 3 As shown, the non-combustion smoking article may further include an impedance matching member 60. 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.

[0028] For example, Figure 3 As shown, the shielding cavity 40 includes an auxiliary medium 20, a transmission conductor 10, an impedance matching member 60, and an electromagnetic shielding body 70. The auxiliary medium 20 can be used as a substrate for the transmission conductor 10 and is disposed on one side surface of the transmission conductor 10. The other side surface of the transmission conductor 10 is connected to a fixing member 80 and is fixed in the electromagnetic shielding body 70 through the fixing member 80. The impedance matching member 60 can be disposed between the transmission conductor 10 and the electromagnetic shielding body 70, and the impedance matching member 60 and the auxiliary medium 20 cooperate with each other to match the impedance of the transmission conductor 10. The non-combustion smoking device can include one or more shielding cavities 40. In the case where the non-combustion smoking device includes multiple shielding cavities 40, multiple smoking products can be heated.

[0029] Exemplarily, one or more shielding covers 50 may be provided on the shielding cavity 40, and the material of the shielding cover 50 has good conductivity. The shielding cover 50 may be magnetic and magnetically attracted to the electromagnetic shielding body 70, so as to facilitate closing the shielding cavity 40. Furthermore, after the shielding cover 50 is opened, the shielding cover 50 may be adhered to the electromagnetic shielding body 70.

[0030] Exemplarily, one or more openings are provided on the shielding cavity 40 or the shielding cover 50. The shape of the opening can be hole-shaped, square-shaped or irregular. The opening can serve as an inlet for air or an outlet for smoke. The maximum opening of the opening is smaller than the wavelength of the microwave signal of the microwave feeding port.

[0031] In the above embodiments, the input characteristic impedance value of the shielding cavity 40 with the shielding cover 50 closed can be a standard 25 ohms, 50 ohms, 75 ohms, 100 ohms, etc.

[0032] Based on any of the above embodiments, as an exemplary embodiment, Figure 4 As shown, 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 an open circuit or a short circuit is configured between the second end 13 and the shielding cavity 40. The open circuit may be that the second end 13 is not in direct contact with the shielding cavity 40, and the short circuit may be that the second end 13 is in direct contact with the shielding cavity 40.

[0033] For example, Figure 4 As shown, 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 the shape of a spiral spring.

[0034] like Figures 5 to 7 The microwave transmission section 12 can also be in the shape of a curved line. Alternatively, the microwave transmission section 12 can be bent at multiple locations to form a harpoon shape or a hollow column shape. For example, Figure 7 As shown, the microwave transmission section of the transmission conductor is surrounded to form a columnar structure with an internal cavity. The microwave transmission section can form the columnar structure around a central axis, and the internal cavity can accommodate an object to be heated or an auxiliary medium. Exemplarily, the microwave transmission section can be bent at multiple locations to form the side of the columnar structure.

[0035] The transmission conductor 10 includes one or more bends or spiral shapes in the shielding cavity 40, which can increase the transmission path in a limited space and improve the heating speed and effect.

[0036] As an exemplary embodiment, Figure 8The schematic diagram of the non-combustion smoking device is shown. The non-combustion smoking device of any of the above embodiments further includes a microwave generator 201. The microwave output end of the microwave generator 201 is connected to the microwave feed port. The number of microwave generators 201 and the electronic cigarette can be one or more. The microwave generator 201 can include a semiconductor microwave generator or an electric vacuum microwave generator.

[0037] Exemplarily, the microwave signal output by the microwave generator 201 may be a pulse microwave or a continuous microwave. Pulse microwave is a discontinuous wave, which can save power consumption in the heating process while maintaining temperature stability. The output characteristic impedance value of the microwave generator 201 may be a standard 25 ohms, 50 ohms, 75 ohms, 100 ohms, etc.

[0038] Exemplarily, the microwave generator 201 may further include a controller 202. The controller 202 may set one or more of the waveform, frequency, working phase, power and 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 or a triangle wave, etc. The controller 202 may also set the microwave generator 201 to output a phase-modulated or frequency-modulated microwave signal. A free combination of a variety of waveforms, frequencies, working phases, powers and duty cycles may correspond to a variety of operating modes. The embodiment of the present application provides a microwave generator 201 with adjustable waveform, frequency, working phase, power and duty cycle, which can flexibly adjust the heating effect of the microwave transmission line.

[0039] Exemplarily, the non-combustion smoking article may further include a microwave signal amplifier 203. The 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.

[0040] Exemplarily, the non-combustion smoking device may further include a power supply 204, which is connected to the power supply port of the microwave generator 201 to provide power to the microwave generator 201. The power supply may be a DC power supply, which may include a battery, a DC-DC power supply, or an AC-DC power supply, etc. The power supply may also include a boost, buck, or voltage stabilization circuit, etc. The controller 202 in the non-combustion smoking device may also control the switch, output voltage, output power, etc. of the power supply.

[0041] Exemplarily, the non-combustion smoking device may further include a sensor 205. For example, the non-combustion smoking device includes a temperature sensor, which may be disposed in the shielding cavity 40 of the non-combustion smoking device, for real-time monitoring of the temperature in the microwave heating device, and for feeding back to the controller 202, so that the controller 202 adjusts various working properties of the non-combustion smoking device according to the real-time temperature. For example, the non-combustion smoking device includes a power sensor, which is used to detect the transmission power of the microwave generator 201, and for feeding back to the controller 202, so that the controller 202 adjusts various working properties of the non-combustion smoking device according to the transmission power. Various working properties may include the temperature or duration of heating, the concentration of particles that the generated smoke can contain, etc.

[0042] Exemplarily, the non-combustion smoking device may further include a network module 206, which is used to record the state information and usage information of the non-combustion smoking device and send the state information and usage information to the server through the network. The state information may include, for example, the temperature of the non-combustion smoking device or the output power of the microwave generator 201. The usage information may include, for example, the heating target temperature, the heating time, the heating duration, or the heating mode. The network module 206 may be placed inside the microwave generator 201 or outside the microwave generator 201.

[0043] See also Fig. 9 , shows the microwave waveform transmitted by the transmission conductor. The microwave energy forms a traveling 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) during transmission and converted into heat energy. If it is in an open circuit state when transmitted to the second end 13, the traveling wave can be reflected back to form a standing wave or a traveling standing wave.

[0044] See also Fig.10 , showing the actual structure of a non-combustion smoking device. The electronic cigarette also includes a shell 44 provided with a first opening 41, and a shielding cavity 40 is formed inside the shell 44. The opening of the shielding cavity 40 is connected to the first opening 41. The opening of the shielding cavity 40 is flush with the first opening 41 or slightly protrudes from the first opening 41, and a microwave feeding port is provided at the other end corresponding to the opening of the shielding cavity 40, and the microwave feeding port is connected to the microwave output end of the microwave generator. For example, Fig.10 The reference numeral 43 is a connection end between the microwave feed port and the microwave output end of the microwave generator. The shielding cover 51 of the shielding cavity 40 can cover the opening of the shielding cavity 40 and also cover the first opening 41 of the housing 44 .

[0045] In some embodiments, the housing 44 may further include a microwave generator, which is disposed inside the housing but outside the shielding cavity and may be adjacent to the shielding cavity. The microwave output end of the microwave generator is connected to the microwave feeding port.

[0046] For example, a filter (not shown in the figure) is arranged in the shielding cover 51 of the first opening 41, which can filter large particles and improve the user's comfort. After use, the shielding cover 51 of the first opening 41 can be opened so that the shielding cover 51 no longer covers the first opening 41. Then, the tobacco substrate 30 to be heated is taken out of the shielding chamber 40.

[0047] Exemplarily, the non-combustion smoking device may also be provided with a second opening 42 in the shell 44, and the first opening 41 and the second opening 42 are respectively provided at opposite ends or sides of the shell 44. The shielding cavity 40 is provided with two openings, which are respectively connected to the first opening 41 and the second opening 42 of the shell 44. The shielding cavity 40 passes through the shell 44 from the first opening 41 to the second opening 42. Alternatively, the shielding cavity 40 passes through the shell 44 from the second opening 42 to the first opening 41. The shielding cavity 40 is provided with two shielding covers (51, 52), which respectively cover the two openings of the shielding cavity 40, and at the same time, they also cover the first opening 41 and the second opening 42. After taking out the substrate 30 of the smoking article to be heated, the shielding cover 52 of the second opening 42 can be opened to clean the inside of the shielding cavity 40. In some embodiments, the shielding cavity 40 can be cylindrical, that is, a hollow column. The inner surface of the shielding cavity 40 is provided with an auxiliary medium 20 for isolating the transmission conductor 10 and the tobacco product substrate 30 to be heated. The auxiliary medium 20 is evenly distributed on the inner surface of the shielding cavity 40, so that the inner surface of the shielding cavity 40 is smooth, which is convenient for cleaning the residual substances in the tobacco product substrate 30 to be heated.

[0048] See also Fig.11 , Fig.11 The structure of a tobacco product for non-combustion smoking utensil is shown. The tobacco product 30 includes a tobacco product body 31 (a tobacco product substrate to be heated) and a gas cooling chamber 32. The first end of the gas cooling chamber 32 is connected to the tobacco product substrate 31 to be heated, and the end surface of the second end of the gas cooling chamber 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 connected to the microwave feed port. The tobacco product 30 is used to be placed in the shielding cavity 40 of the non-combustion smoking utensil, and the shape of the tobacco product 30 matches the cavity shape of the shielding cavity 40. For example, the shielding cavity 40 is a hollow columnar shape, and the tobacco product 30 can be in the shape of a cylinder, and the cross-sectional diameter of the tobacco product 30 is smaller than the inner cross-sectional diameter of the shielding cavity 40. The 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. The outer contact surface of the gas cooling cavity 32 can contact the opening of the shielding cavity 40 or the inner wall surface of the shielding cavity 40. For example, the outer contact surface of the gas cooling cavity 32 can fit the opening of the shielding cavity 40 or the inner wall surface of the shielding cavity 40. The metal film 321 can be equivalent to the aforementioned shielding cover, which can greatly reduce electromagnetic wave leakage while being breathable.

[0049] In some embodiments, the metal film 321 extends to the outer contact surface of the gas cooling cavity 32 to form a metal contact surface 323. The metal contact surface 323 may be a step-type contact surface or a plane, 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 conducive to the metal contact surface contacting the shielding cavity to form a better shielding effect when the heated tobacco substrate 31 is placed in the shielding cavity 40, thereby greatly reducing electromagnetic wave leakage.

[0050] In some embodiments, the tobacco article 30 further includes a filter 34, which is connected to the second end of the gas cooling chamber 32. The filter 34 may be sleeved, and the gas cooling chamber 32 may be partially or completely sleeved into the filter 34 to filter particulate matter in the gas transmitted from the gas cooling chamber 32, thereby improving the user's comfort.

[0051] 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 at least covers the connection edge between the filter 34 and the gas cooling chamber 32. The metal layer may contact the metal contact surface 323 or the metal film 321 on the surface of the gas cooling chamber 32, or may be connected to the metal contact surface 323 or the metal film 321 on the surface of the gas cooling chamber 32 to form an integral body.

[0052] It should be understood that the embodiments of the present application may also have other application modes, not limited to the above application examples. Under the premise of not contradicting each other, the various technical features in the embodiments and application examples of the present application may be freely combined.

[0053] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0055] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0057] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numerals and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0058] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A non-combustion smoking device, characterized in that: The non-combustion smoking device is used to heat the substrate of the tobacco product to be heated; the non-combustion smoking device comprises a transmission conductor, a transmission ground and a microwave feeding port, the transmission conductor, the transmission ground and the substrate of the tobacco product to be heated form a microwave transmission line, the transmission ground is arranged around the transmission conductor to form a shielding cavity, the transmission conductor is arranged in the shielding cavity; a shielding cover is arranged on the shielding cavity; the shielding cavity is used to place the substrate of the tobacco product to be heated; The transmission conductor passes through the shielding cavity and is connected to the microwave feeding port; the microwave feeding port is used to access the microwave signal; The non-combustion smoking article further comprises an auxiliary medium, which is arranged in the shielding cavity and is used to isolate the transmission conductor and the substrate of the smoking article to be heated; The loss tangent of the heated tobacco article substrate is greater than the loss tangent of the auxiliary medium; the auxiliary medium comprises one or more of air, plastic, PCB board and ceramic; An opening is provided on the shielding cavity or the shielding cover, and the maximum diameter of the opening is smaller than the wavelength of the microwave signal received by the microwave feeding port.

2. The non-combustion smoking article according to claim 1, characterized in that: The non-combustion smoking article further comprises an impedance matching component, the transmission conductor is arranged between the impedance matching component and the auxiliary medium, and the impedance matching component and the auxiliary medium cooperate with each other to form impedance matching for the transmission conductor.

3. The non-combustion smoking article according to claim 1, characterized in that: The shielding cavity and the shielding cover are magnetically attracted to each other.

4. The non-combustion smoking article according to claim 1, characterized in that: The loss tangent of the auxiliary medium is less than 0.

02.

5. The non-combustion smoking article according to any one of claims 1 to 4, characterized in that: The transmission conductor includes a first end and a second end, the first end is connected to the microwave feeding port, the second end is arranged in the shielding cavity, and the second end and the shielding cavity are open-circuited or short-circuited.

6. The non-combustion smoking article according to any one of claims 1 to 4, characterized in that: The transmission conductor also includes a microwave transmission section, which is arranged in the shielding cavity and is in the shape of a bending line, a spiral spring, a harpoon or a hollow column.

7. The non-combustion smoking article according to any one of claims 1 to 4, characterized in that: The non-combustion smoking article further comprises a microwave generator, and a microwave output end of the microwave generator is connected to the microwave feeding port.

8. The non-combustion smoking article according to claim 7, characterized in that: The non-combustion smoking article further comprises a controller; the controller is used to set one or more of the waveform, frequency, working phase, power and duty cycle of the microwave signal output by the microwave generator.

9. The non-combustion smoking article according to claim 1, characterized in that: The non-combustion smoking device further comprises a shell provided with a first opening, the shielding cavity is formed in the shell, and the opening of the shielding cavity is connected to the first opening of the shell, and the shielding cover of the shielding cavity covers the first opening to cover the opening of the shielding cavity.

10. The non-combustion smoking article according to claim 9, characterized in that: The shell further includes a microwave generator, which is arranged outside the shielding cavity but inside the shell, and a microwave output end of the microwave generator is connected to the microwave feeding port.

11. The non-combustion smoking article according to claim 9, characterized in that: The shell is also provided with a second opening, and the shielding cavity passes through the shell from the first opening to the second opening. The shielding cavity includes two openings, which are respectively connected to the first opening and the second opening. The shielding cavity is provided with two shielding covers, which respectively cover the first opening and the second opening to cover the opening of the shielding cavity.

12. The non-combustion smoking article according to claim 9, characterized in that: The shielding cover includes a filter.

13. The non-combustion smoking article according to claim 9, characterized in that: The shielding cavity is in the shape of a hollow column.

14. A smoking product, characterized in that: include: A tobacco product body and a gas cooling cavity, wherein the first end of the gas cooling cavity is connected to the tobacco product body, and the second end of the gas cooling cavity is covered with a metal film, wherein the metal film is provided with a hole, and the aperture of the hole is smaller than the wavelength of the microwave signal connected to the microwave feeding port; the tobacco product is used to be placed in the shielding cavity of the non-combustion smoking device according to any one of claims 1 to 13, and the outer surface contact surface of the gas cooling cavity contacts the opening of the shielding cavity or the inner wall of the shielding cavity.

15. The smoking article according to claim 14, characterized in that The metal film covering the second end extends to the outer surface contact surface of the gas cooling cavity to form a metal contact surface.

16. The smoking article according to claim 14 or 15, characterized in that: A filter is also included, and the filter is connected to the second end of the gas cooling chamber.

17. The smoking article according to claim 16, characterized in that The outer surface of the filter tip is covered with a metal layer, and the metal layer at least covers the connecting edge between the filter tip and the gas cooling chamber.

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