Aerosol generating device and microwave heating assembly thereof

Abstract

The invention relates to an aerosol generating device and a microwave heating assembly thereof, the microwave heating assembly comprises an outer conductor unit and an accommodating area, and the outer conductor unit comprises an outer conductor cylinder and a microwave radiation element; the outer conductor cylinder is cylindrical and forms a cavity, and the microwave radiation element is located in the cavity and connected with the inner circumferential side face of the outer conductor cylinder. The containing area is used for containing an aerosol generating product, and at least part of the containing area is located in the cavity; at least part of the structure of the microwave radiation element is located on the peripheral side of the containing area and can rotate in the circumferential direction around the containing area. According to the invention, the aerosol generating product arranged in the accommodating area can be heated more uniformly, and the heating rate and the mist outlet speed can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of aerosol generation, and in particular to an aerosol generating device and a microwave heating component thereof. Background Art

[0002] The aerosol generating device can heat and atomize the aerosol generating product by microwave heating. Generally, the microwave heating type aerosol generating device includes a microwave heating component, which can form a microwave interaction zone and can transfer microwave energy to the aerosol generating product to achieve heating; in this process, the microwave energy distribution field determines the effect of microwave heating.

[0003] The microwave heating component of the related art adopts a central heating method, that is, a probe is inserted into the aerosol generating product to heat the internal medium of the aerosol generating product; however, this central heating method not only causes the surface of the aerosol generating product to fail to be completely heated, but also has slow mist output and a long preheating time (the preheating time of the related art requires more than 5 seconds), and high-temperature heating needs to be maintained between puffs to keep the medium at a higher temperature. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an improved aerosol generating device and a microwave heating component thereof.

[0005] The technical solution adopted by the present invention to solve the technical problem is: construct a microwave heating assembly for heating an aerosol generating product, comprising:

[0006] The outer conductor unit comprises an outer conductor tube and a microwave radiation element; the outer conductor tube is in a cylindrical shape and forms a cavity; the microwave radiation element is located in the cavity and connected to the inner circumferential side of the outer conductor tube;

[0007] a receiving area for receiving the aerosol generating product, at least a portion of the receiving area being located within the cavity;

[0008] Wherein, at least a part of the structure of the microwave radiation element is located on the outer peripheral side of the containing area and can rotate circumferentially around the containing area.

[0009] In some embodiments, a portion of the structure of the outer conductor tube can rotate around the central axis of the outer conductor tube; the microwave radiation element is fixedly connected to the rotatable portion of the structure of the outer conductor tube;

[0010] Alternatively, the microwave radiation element may be movably connected to the outer conductor cylinder, and the microwave radiation element may rotate around the central axis of the outer conductor cylinder.

[0011] In some embodiments, the outer conductor barrel comprises a first barrel section and a second barrel section which are axially assembled; a first rotating structure is provided between the first barrel section and the second barrel section so that the first barrel section rotates on the second barrel section;

[0012] The microwave radiation element is disposed in the first barrel section and fixedly connected to the first barrel section so as to rotate along with the first barrel section.

[0013] In some embodiments, the microwave radiating element is in electrical contact with the outer conductor tube;

[0014] Alternatively, the microwave radiation element is integrated with the outer conductor tube.

[0015] In some embodiments, the microwave heating assembly further comprises an inner conductor unit disposed in the cavity, wherein the inner conductor unit stands at the bottom of the outer conductor tube and is integrally combined with or electrically contacted with the outer conductor tube;

[0016] The microwave radiation element and the inner conductor unit are microwave-coupled in a magnetic coupling manner, and the microwave radiation element is rotatable relative to the inner conductor unit.

[0017] In some embodiments, at least a portion of the structure of the inner conductor unit and at least a portion of the structure of the microwave radiation element are located at the same height.

[0018] In some embodiments, the microwave radiation element includes a radiation portion and a connection portion;

[0019] One end of the connecting portion is connected to the outer conductor tube, and the other end thereof is connected to the radiating portion;

[0020] The radiation part is suspended in the cavity by means of the connection part and is located at the outer peripheral side of the receiving area.

[0021] In some embodiments, the microwave radiation element further comprises a first coupling portion connected to the radiation portion, wherein the first coupling portion and a partial structure of the inner conductor unit are located at the same height;

[0022] Alternatively, the inner conductor unit is disposed around the outer periphery of the receiving area, and the radiating portion is between the inner conductor unit and the receiving area, and maintains a distance from both the inner conductor unit and the receiving area.

[0023] The present invention also constructs an aerosol generating device, comprising a microwave generating component, a driving component and the above-mentioned microwave heating component;

[0024] The microwave generating component is used to generate microwaves, and is connected to the microwave heating component to feed the microwaves into the cavity;

[0025] The driving assembly is located outside the outer conductor tube and drives the microwave radiation element to rotate circumferentially around the receiving area.

[0026] In some embodiments, the microwave frequency range of the aerosol generating device is between 2400 MHz and 2500 MHz.

[0027] The implementation of the present invention has the following beneficial effects: the present invention fixes the microwave radiation element in the outer conductor and can rotate circumferentially around the receiving area, thereby performing circumferential segmented heating on the aerosol generating product arranged in the receiving area, so that the aerosol generating product can be heated more evenly, and the heating rate and the mist emission speed can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0029] Figure 1 1 is a schematic structural diagram of a microwave heating assembly in Embodiment 1 of the present invention in cooperation with a driving assembly and an aerosol generating product;

[0030] Figure 2 yes Figure 1 A longitudinal cross-sectional view of the microwave heating assembly after the receiving seat is disassembled;

[0031] Figure 3 yes Figure 2 The enlarged image of the content A in the middle frame;

[0032] Figure 4 is a top view of the structure of the microwave heating assembly in Embodiment 1 of the present invention after omitting the receiving seat;

[0033] Figure 5 1 is a schematic structural diagram of a microwave heating assembly in Embodiment 2 of the present invention in cooperation with a driving assembly and an aerosol generating product;

[0034] Figure 6 yes Figure 5 A longitudinal cross-sectional view of the microwave heating assembly shown;

[0035] Figure 7 1 is a top view of the structure of the microwave heating assembly in Example 2 of the present invention with the receiving seat omitted.

[0036] Reference numerals:

[0037] Microwave heating assembly 100;

[0038] Outer conductor unit 10; microwave radiation element 1; first radiation portion 11a; first coupling portion 12a; first connection portion 13a; second radiation portion 11b; second connection portion 13b; outer conductor tube 2; cavity 21; closed end 22; open end 23; first tube section 24; second peripheral groove 241; first rack 242; protrusion 243; second tube section 25; first cavity section 251; first peripheral groove 2511; second cavity section 252; first ball 26;

[0039] Microwave feeding unit 30; inner conductor 31;

[0040] Inner conductor unit 40; first conductor portion 41; first conductor post 41a; second conductor post 41b; third conductor post 41c; second conductor portion 42; conductor ring 42a; conductor cylinder 42b;

[0041] Accommodation seat 50; accommodation area 51; accommodation portion 52; fixing portion 53; air intake channel 54; embedding groove 55;

[0042] Driving assembly 200; driving member 201; gear 202;

[0043] Aerosol-generating article 300 . DETAILED DESCRIPTION

[0044] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. The following description is for the purpose of illustration, not for limitation, and specific details such as specific system structures and technologies are provided to facilitate a thorough understanding of the embodiments of the present invention.

[0045] The present invention constructs an aerosol generating device, which can be used to heat the aerosol generating product 300 by microwaves to generate aerosol by atomization, so as to be inhaled or inhaled by the user.

[0046] See also Figure 1 The aerosol generating device may include a microwave heating component 100, a driving component 200, a microwave generating component (not shown) and a power supply component (not shown); the power supply component is used to provide power to the microwave heating component 100, the microwave generating component and the driving component 200; the microwave generating component is used to generate microwave signals and feed microwaves into the microwave heating component 100; the microwave heating component 100 is used to insert the aerosol generating product 300, and use microwaves to heat and atomize the aerosol generating product 300, wherein reference may be made to Figure 2 A microwave radiation element 1 is provided in the microwave heating component 100. The microwave fed into the microwave heating component 100 can be coupled and conducted to the microwave radiation element 1, and the microwave radiation element 1 can be rotated with the central axis of the microwave heating component 100 as the central axis by relying on the driving component 200.

[0047] It can be understood that after the aerosol generating product 300 is inserted into the microwave heating assembly 100, the matrix section of the aerosol generating product 300 and the partial structure of the microwave radiation element 1 are arranged relative to each other in the radial direction of the aerosol generating product 300; secondly, when the aerosol generating device is working, a local focused strong microwave field can be formed at the circumferential position of the aerosol generating product 300 through the microwave radiation element 1, and the local structure (i.e., the matrix section) of the aerosol generating product 300 is heated. At the same time, the microwave radiation element 1 can rotate around the aerosol generating product 300 and hover on one side of the aerosol generating product 300 in the circumferential direction, thereby realizing the circumferential segmented heating of the aerosol generating product 300. It can be understood that after each puff, the microwave radiation element 1 rotates a preset angle, and completes a circle after a number of puffs. The preset angle can be adjusted according to actual conditions, and no specific restrictions are made here.

[0048] Of course, the driving assembly 200 is not an essential component of the present invention. In some embodiments, the microwave radiation element 1 can also be rotated around the aerosol generating product 300 by manual rotation.

[0049] See also Figure 2 In some embodiments, the microwave heating assembly 100 may include an outer conductor unit 10 , a microwave feeding unit 30 , an inner conductor unit 40 and a receiving seat 50 .

[0050] The outer conductor unit 10 includes an outer conductor tube 2 and the above-mentioned microwave radiation element 1. The outer conductor tube 2 may be in a cylindrical shape, which is used to define a cavity 21 and confine microwave energy in the cavity 21; the outer conductor tube 2 may have a closed end 22 and an open end 23 opposite to the closed end 22. The microwave radiation element 1 is disposed in the cavity 21, one end of which may be in electrical contact with the outer conductor tube 2 or integrally combined, and part of the structure of the microwave radiation element 1 is disposed on the outer peripheral side of the receiving area 51.

[0051] It should be noted that the following description uses the axial direction of the outer conductor tube 2 as a reference for the longitudinal direction, and the position close to the open end 23 is the top / upper, and the position close to the closed end 22 is the bottom / lower.

[0052] The microwave feeding unit 30 is disposed on the outer conductor tube 2 and is used to guide the microwave energy generated by the microwave generating assembly into the cavity 21 .

[0053] The inner conductor unit 40 is disposed in the cavity 21 and stands on the closed end 22 of the outer conductor tube 2. The inner conductor unit 40 is microwave-coupled with the microwave feeding unit 30 in an electrical coupling or magnetic coupling manner. Of course, the inner conductor unit 40 and the microwave feeding unit 30 can also be microwave-coupled through other structures that can achieve microwave matching, which is not specifically limited here.

[0054] The microwave radiation element 1 is coupled to the inner conductor unit 40 by magnetic coupling to form a locally focused strong field distribution at the outer peripheral side of the aerosol generating article 300. Secondly, at least part of the structure between the microwave radiation element 1 and the inner conductor unit 40 is at the same height to ensure that the microwave radiation element 1 can obtain sufficient microwave energy from the inner conductor unit 40.

[0055] The receiving seat 50 is used to define a receiving area 51. It can be understood that the position occupied by the receiving seat 50 belongs to the outside of the receiving area 51; the receiving seat 50 can be fixedly or detachably installed at the open end 23 of the outer conductor tube 2. It should be noted that the provision of the receiving seat 50 can help protect the cavity 21 and the structure located in the cavity 21 from being contaminated by the mist or as little as possible, but the receiving seat 50 is not a necessary component in the present invention. The aerosol generating article 300 can be directly inserted into the cavity 21 from the open end 23 of the outer conductor tube 2, wherein the space occupied by the aerosol generating article 300 in the cavity 21 can be considered as the receiving area 51.

[0056] In some embodiments, please refer to Figure 1 The driving assembly 200 is arranged outside the outer conductor tube 2 to save space in the cavity 21. The driving assembly 200 can indirectly / directly drive the microwave radiation element 1 to rotate, for example, Figure 2 The outer conductor tube 2 may be assembled from a first tube section 24 and a second tube section 25 arranged longitudinally, the first tube section 24 may rotate relative to the second tube section 25 with the axis of the outer conductor tube 2 as the center axis, and the first tube section 24 is fixedly connected to the microwave radiation element 1, and the first tube section 24 is driven to rotate by the driving assembly 200, which can simultaneously drive the microwave radiation element 1 to rotate; or the microwave radiation element 1 may be movably connected to the outer conductor tube 2, and it can rotate around the center axis of the outer conductor tube 2, and part of the structure of the microwave radiation element 1 is exposed outside the outer conductor tube 2 and connected to the driving assembly 200, so that the driving assembly 200 can directly drive the microwave radiation element 1 to rotate.

[0057] In summary, the present invention fixes the microwave radiation element 1 in the outer conductor tube 2 and can rotate circumferentially around the receiving area 51, thereby performing circumferential segmented heating on the aerosol generating product 300 arranged in the receiving area 51. Since the microwave radiation element 1 concentrates on heating one local structure of the aerosol generating product 300, the local structure can be completely heated, and then the next local structure is heated, so that the aerosol generating product 300 can be heated more evenly, and due to the concentrated heating of the local position, the heated area is relatively reduced, and the microwave energy field is concentrated, so that the heating rate and the mist output speed are improved; in addition, the circumferential segmented heating method can also ensure that sufficient flavor substances are heated every time you draw, and the taste will not become lighter as you draw, and the puffing taste is better.

[0058] Secondly, when the microwave-heated aerosol generating device is working, the complex dielectric constant of the aerosol generating product 300 disposed therein will be affected by temperature and material changes and will change continuously, and the change of the complex dielectric constant will in turn affect the field distribution of the microwave in the cavity 21 and the overall feeding efficiency, thereby resulting in unstable feeding efficiency and deviation of the field distribution.

[0059] The present invention can ensure efficient microwave feeding by circumferentially segmented heating of the aerosol generating product 300 and centralized design of the energy field, and effectively control the dielectric constant of the aerosol generating product 300, the field distribution of the microwave in the cavity 21, and the microwave feeding efficiency during the heating process within a certain range, thereby avoiding large fluctuations in the dielectric constant, microwave feeding efficiency, and microwave efficiency of the aerosol generating product 300 during the heating process, thereby obtaining a better heating effect. In some embodiments, the microwave frequency of the aerosol generating device of the present invention can be controlled between 2400MHz and 2500MHz.

[0060] In order to further illustrate the present invention, several specific embodiments are listed below for detailed description:

[0061] Example 1, please refer to Figure 1 The microwave heating component 100 has a roughly cylindrical appearance. Of course, the microwave heating component 100 is not limited to a cylindrical shape, and may also be in other shapes such as a square column, an elliptical column, etc.

[0062] See also Figure 2 The outer conductor tube 2 is cylindrical, and may include a first tube section 24 and a second tube section 25 arranged longitudinally. The first tube section 24 is located above the second tube section 25 and may be installed on the second tube section 25 to form a cavity 21 in combination.

[0063] like Figure 2As shown, the end of the first barrel section 24 away from the second barrel section 25 is open to form an open end 23 of the outer conductor barrel 2, and the first barrel section 24 can be rotatable relative to the second barrel section 25 with the axis of the outer conductor barrel 2 as the central axis. The driving assembly 200 can be connected to the first barrel section 24 and drive the first barrel section 24 to rotate.

[0064] One end of the second barrel section 25 away from the first barrel section 24 is of closed design, forming the closed end 22 of the outer conductor barrel 2. The second barrel section 25 includes a first cavity section 251 and a second cavity section 252, wherein the first cavity section 251 is located above the second cavity section 252, and the diameter of the first cavity section 251 is greater than the diameter of the second cavity section 252, so a step is formed between the first cavity section 251 and the second cavity section 252, and the bottom of the first barrel section 24 can stand on it.

[0065] A first rotating structure is provided between the first barrel section 24 and the second barrel section 25 , and the first rotating structure is used to realize the rotation of the first barrel section 24 on the second barrel section 25 .

[0066] See also Figure 3 The first rotating structure includes a first circumferential groove 2511 formed on the inner circumference of the first cavity section 251, a second circumferential groove 241 formed on the outer circumference of the first barrel section 24 opposite to the first circumferential groove 2511, and a plurality of first balls 26 installed between the first circumferential groove 2511 and the second circumferential groove 241. When the driving assembly 200 drives the first barrel section 24 to rotate, the plurality of first balls 26 roll between the first circumferential groove 2511 and the second circumferential groove 241 to reduce friction, thereby allowing the first barrel section 24 to rotate easily and improving the mechanical efficiency of the first barrel section 24.

[0067] Of course, the first rotating structure is not limited to the above-mentioned scheme. In other embodiments, the first rotating structure may include a slide rail formed on the inner circumference of the first cavity section 251, and one or more sliders formed on the outer circumference of the first barrel section 24. The slider is used to be inserted into the slide rail and can slide in the slide rail.

[0068] Please read back Figure 1 The driving assembly 200 may include a driving member 201 and a first transmission structure connected between the driving member 201 and the first barrel section 24 .

[0069] like Figure 1 As shown, the driving member 201 may be a motor.

[0070] The first transmission structure may include a gear 202 sleeved on the rotating shaft of the driving member 201, and a first rack 242 formed on the outer circumference of the first barrel section 24, and the gear 202 is meshed with the first rack 242. Of course, the transmission structure is not limited to driving the first barrel section 24 to rotate in a meshing transmission manner, and can also be realized by friction transmission, such as belt transmission.

[0071] See also Figure 2 The inner conductor unit 40 may include a first conductor portion 41 and a second conductor portion 42 .

[0072] like Figure 2 As shown, the first conductor part 41 may be a longitudinally long first conductor column 41a. In this embodiment, the first conductor column 41a is in a long column shape. The first conductor column 41a stands on the bottom of the second barrel section 25 and is arranged away from the central axis of the outer conductor barrel 2. The bottom end of the first conductor column 41a is electrically in contact with or integrally connected to the second barrel section 25 of the outer conductor barrel 2, and the top end thereof extends toward the direction of the opening end 23 of the outer conductor barrel 2.

[0073] The second conductor portion 42 may be an annular conductor ring 42a. In this embodiment, the conductor ring 42a is a circular ring structure, and its outer diameter may be greater than its thickness, and may be smaller than the inner diameter of the first barrel section 24. The conductor ring 42a is located above the first conductor post 41a, and the center of the conductor ring 42a may be located on the axis of the outer conductor barrel 2. In addition, the bottom surface of the conductor ring 42a may be fixed on the top of the first conductor post 41a, and is integrally connected to or electrically contacted with the first conductor post 41a.

[0074] Please continue reading Figure 2 The microwave radiation element 1 is fixedly connected in the first tube section 24 and relatively fixed to the first tube section 24 so as to be able to rotate around the axis of the outer conductor tube 2 of the first tube section 24 as the central axis.

[0075] like Figure 2 As shown, the microwave radiation element 1 may include a first radiation portion 11a and a first coupling portion 12a connected to the first radiation portion 11a. The first coupling portion 12a is used to cooperate with the inner conductor unit 40 to achieve microwave coupling in a magnetic coupling manner; the first radiation portion 11a deviates from the axis of the outer conductor cylinder 2 and is located outside the receiving area 51, and at least a part of the structure of the first radiation portion 11a is arranged relative to the outer peripheral wall of the receiving seat 50 in the radial direction of the outer conductor cylinder 2 to act on the aerosol generating product 300 inserted into the receiving seat 50. When the first barrel section 24 rotates, the first radiation portion 11a can move circumferentially around the outer periphery of the receiving seat 50 with the axis of the outer conductor cylinder 2 as the central axis, or can be suspended on one side of the outer periphery of the receiving seat 50; and the first coupling portion 12a and the first radiation portion 11a are relatively fixed to the inner conductor unit 40 in the longitudinal direction.

[0076] The first coupling portion 12a may be annular, coaxially disposed around the conductor ring 42a, and located at the same height as the conductor ring 42a. It should be noted that magnetic coupling generally does not require a direct physical connection. Figure 4 , the first coupling portion 12a does not contact the conductor loop 42a, and a distance is maintained between them.

[0077] Optionally, a notch is provided on the circumference of the first coupling portion 12 a , and the notch can facilitate the frequency design of the cavity 21 .

[0078] The first radiation portion 11a is longitudinally elongated and stands on the top of the first coupling portion 12a, wherein the bottom end of the first radiation portion 11a is fixedly connected to the top surface of the first coupling portion 12a, and the top end thereof extends longitudinally upward; the length of the first radiation portion 11a can be adapted to the position of the matrix segment of the aerosol generating product 300 in the receiving seat 50, and generally, the first radiation portion 11a can completely cover the matrix segment of the aerosol generating product 300 in the longitudinal direction.

[0079] A fixing structure is provided between the microwave radiation element 1 and the first tube section 24 to fix the microwave radiation element 1 in the first tube section 24 .

[0080] like Figure 2 As shown, the fixing structure may include a first connecting portion 13 a disposed on the first radiating portion 11 a , a protrusion 243 disposed on the outer conductor tube 2 , and a fixing member (not shown) for fixing the first connecting portion 13 a in the protrusion 243 .

[0081] The protrusion 243 is arranged to protrude outward along the outer wall surface of the first barrel section 24, and a slot (not shown) is provided in the protrusion 243 for the first connecting portion 13a to be inserted. The first connecting portion 13a can be in a longitudinal shape, which can be arranged on the outer side of the first coupling portion 12a, extending toward the protrusion 243, and inserted into the slot. The fixing member can be a bolt, a latch, etc. For example, the fixing member is a bolt, and its end can pass through the first connecting portion 13a and be screwed to the protrusion 243.

[0082] Please continue reading Figure 2 The microwave feeding unit 30 is inserted and installed at the bottom of the second barrel section 25. The microwave feeding unit 30 may include an outer conductor (not shown in the figure), an inner conductor 31 coaxially arranged in the outer conductor, and a dielectric layer (not shown in the figure) between the outer conductor and the inner conductor 31.

[0083] One end of the inner conductor 31 is used to connect to the microwave generating assembly, and the other end of the inner conductor 31 is located in the cavity 21 and extends in the direction of the conductor ring 42a to achieve microwave coupling with the inner conductor unit 40 in a magnetic coupling manner. It should be particularly noted here that magnetic coupling usually does not require a direct physical connection. In other words, there is no contact between the inner conductor 31 and the inner conductor unit 40, as long as the projections of the structures of the inner conductor 31 and the inner conductor unit 40 on the longitudinal plane at least partially overlap. Preferably, as Figure 2 or Figure 4 As shown, the end of the inner conductor 31 extending into the cavity 21 is located at the center of the conductor ring 42a.

[0084] Please continue reading Figure 2 The receiving seat 50 may include a fixing portion 53 installed at the open end 23 of the outer conductor tube 2 and a receiving portion 52 at least partially disposed in the cavity 21 .

[0085] like Figure 2 As shown, the receiving portion 52 may be cylindrical, with an open top for inserting the aerosol generating product 300, and a closed bottom. Of course, the shape of the receiving portion 52 is not limited to a cylindrical shape, and may also be other shapes such as a rectangular cylinder. The outer diameter of the receiving portion 52 is smaller than the inner diameter of the cavity 21, and the inner diameter of the receiving portion 52 is adapted to the outer diameter of the aerosol generating product 300.

[0086] The fixing portion 53 may be annular, with an inner diameter matching the inner diameter of the receiving portion 52, and is integrally connected to the top of the receiving portion 52. In this embodiment, the fixing portion 53 is clamped on the open end 23 of the outer conductor tube 2.

[0087] like Figure 2 As shown, an air inlet channel 54 is further formed in the receiving portion 52 and / or the fixing portion 53, and the air inlet channel 54 can introduce external air into the bottom of the aerosol generating article 300. In this embodiment, the air inlet channel 54 includes a first air channel formed on the inner side of the bottom of the receiving portion 52 and a second air channel formed on the inner peripheral side walls of the receiving portion 52 and the fixing portion 53, and the first air channel and the second air channel are connected.

[0088] It can be understood that when the aerosol generating product 300 is inserted into the receiving seat 50, the air inlet channel 54 and the interior of the aerosol generating product 300 together form an air flow channel, and the external air can flow from the air inlet channel 54 to the bottom of the aerosol generating product 300, and then flow longitudinally upward from the bottom of the aerosol generating product 300 into the interior thereof, and finally flow out from the top of the aerosol generating product 300.

[0089] Example 2, please refer to Figure 5 Compared with Example 1, the overall height of the microwave heating assembly 100 of this embodiment is reduced, which is conducive to miniaturization.

[0090] See also Figure 6 The structure of the outer conductor tube 2 of the second embodiment is basically the same as that of the first embodiment, and will not be described in detail here. Moreover, the driving assembly 200 and its driving method, and the structure of the receiving seat 50 are the same as those of the first embodiment, and will not be described in detail here. The main difference between the second embodiment and the first embodiment is that the structure of the inner conductor unit 40, the structure and connection method of the microwave radiation element 1, and the installation position and coupling method of the microwave feeding unit 30 are different.

[0091] like Figure 6 As shown, the inner conductor unit 40 of the second embodiment includes two first conductor portions 41 and a single second conductor portion 42 .

[0092] Any first conductor portion 41 may be a longitudinally long second conductor column 41 b, which stands on the closed end 22 of the outer conductor tube 2 and is arranged offset from the central axis of the outer conductor tube 2, wherein the bottom end of the first conductor column 41 b is electrically in contact with or integrally connected to the closed end 22 of the outer conductor tube 2, and the top end thereof extends toward the open end 23 of the outer conductor tube 2.

[0093] In this embodiment, reference may be made to Figure 7 The two first conductor parts 41 are symmetrically arranged on both sides of the central axis of the outer conductor tube 2. It can be understood that the number of the first conductor parts 41 can be more than three, and in this case, the more than three first conductor parts 41 can be arranged at intervals on the circumference of the circle whose center falls on the central axis of the outer conductor tube 2.

[0094] Continue reading Figure 6 The second conductor part 42 of the second embodiment is a cylindrical conductor tube 42b. In this embodiment, the conductor tube 42b is a cylindrical structure, coaxially sleeved on the outer peripheral side of the receiving seat 50, and the outer diameter of the conductor tube 42b is smaller than the diameter of the cavity 21; the two second conductor posts 41b are arranged on the opposite sides of the conductor tube 42b and combined on the corresponding outer peripheral side walls of the conductor tube 42b, and the combination method can be integrated or electrically connected. Secondly, the inner diameter of the conductor tube 42b is larger than the outer diameter of the receiving part 52 of the receiving seat 50, and the receiving part 52 is relatively located on the inner periphery of the conductor tube 42b.

[0095] like Figure 6 As shown, the microwave radiation element 1 of the second embodiment is combined on the inner peripheral side wall of the first tube section 24. In this embodiment, the microwave radiation element 1 may include a second radiation portion 11b and a second connection portion 13b connected to the second radiation portion 11b.

[0096] The second connecting portion 13 b may be longitudinally shaped and may be located above the conductor tube 42 b , extending from the inner peripheral side wall of the first tube section 24 toward the central axis of the outer conductor tube 2 to a position relative to the inner side of the conductor tube 42 b .

[0097] The second radiating portion 11b may be in a longitudinal shape, one end of which is connected to the second connecting portion 13b, and the other end of which extends longitudinally downward. The length direction of the second radiating portion 11b is parallel to the central axis of the outer conductor tube 2, and the length of the second radiating portion 11b is greater than the axial length of the conductor tube 42b. At least most of the structure of the second radiating portion 11b (at least most of the structure can be understood as the second radiating portion 11b is located on the inner periphery of the conductor tube 42b The structure accounts for more than 50%, 60%, 70%, 80% or 90%, etc.) is located on the inner periphery of the conductor tube 42b, between the conductor tube 42b and the receiving seat 50, and the second radiating portion 11b does not contact the conductor tube 42b, and realizes microwave coupling in a magnetic coupling manner, and does not contact the receiving seat 50 to avoid hindering the rotation of the second radiating portion 11b.

[0098] It can be understood that when the first barrel section 24 rotates, the second radiating portion 11b and the second connecting portion 13b are relatively fixed in the longitudinal direction with the inner conductor unit 40. The second radiating portion 11b is used for microwave coupling with the conductor barrel 42b and is also opposite to the outer peripheral wall of the receiving seat 50 to generate a microwave energy field.

[0099] Continue reading Figure 6 The microwave feeding unit 30 of the second embodiment is inserted into the side of the second barrel section 25, and microwave coupling is achieved between the inner conductor 31 and the inner conductor unit 40 of the embodiment in an electrically coupled manner.

[0100] In this embodiment, the end of the inner conductor 31 extending into the cavity 21 is electrically connected to one of the second conductor posts 41 b to achieve microwave coupling.

[0101] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A microwave heating assembly for heating an aerosol generating article (300), It is characterized in that include: An outer conductor unit (10) comprises a microwave radiation element (1) and an outer conductor tube (2); the outer conductor tube (2) is in a cylindrical shape and forms a cavity (21); the microwave radiation element (1) is located in the cavity (21) and is connected to the inner circumferential side surface of the outer conductor tube (2); a receiving area (51) for receiving the aerosol generating product (300), wherein at least a portion of the receiving area (51) is located within the cavity (21); Wherein, at least part of the structure of the microwave radiation element (1) is located on the outer peripheral side of the receiving area (51), and can rotate circumferentially around the receiving area (51).

2. The microwave heating assembly according to claim 1, It is characterized in that A partial structure of the outer conductor tube (2) can rotate around the central axis of the outer conductor tube (2); the microwave radiation element (1) is fixedly connected to the rotatable partial structure of the outer conductor tube (2); Alternatively, the microwave radiation element (1) is movably connected to the outer conductor tube (2), and the microwave radiation element (1) is rotatable around the central axis of the outer conductor tube (2).

3. The microwave heating assembly according to claim 1, It is characterized in that The outer conductor barrel (2) comprises a first barrel section (24) and a second barrel section (25) which are axially assembled; a first rotating structure is provided between the first barrel section (24) and the second barrel section (25) so that the first barrel section (24) rotates on the second barrel section (25); The microwave radiation element (1) is arranged in the first barrel section (24) and is fixedly connected to the first barrel section (24) so ​​as to rotate along with the first barrel section (24).

4. The microwave heating assembly according to claim 1, It is characterized in that The microwave radiation element (1) is in electrical contact with the outer conductor tube (2); Alternatively, the microwave radiation element (1) is integrated with the outer conductor tube (2).

5. The microwave heating assembly according to claim 1, It is characterized in that The microwave radiation element (1) comprises a radiation portion (11a, 11b) and a connection portion (13a, 13b); One end of the connecting portion (13a, 13b) is connected to the outer conductor tube (2), and the other end thereof is connected to the radiating portion (11a, 11b); The radiation part (11a, 11b) is suspended in the cavity (21) by means of the connection part (13a, 13b) and is located on the outer peripheral side of the receiving area (51).

6. The microwave heating assembly according to claim 5, It is characterized in that The microwave heating assembly further comprises an inner conductor unit (40) arranged in the cavity (21), wherein the inner conductor unit (40) stands at the bottom of the outer conductor tube (2) and is integrally combined with or electrically contacted with the outer conductor tube (2); The microwave radiation element (1) and the inner conductor unit (40) are microwave-coupled in a magnetic coupling manner, and the microwave radiation element (1) is rotatable relative to the inner conductor unit (40).

7. The microwave heating assembly according to claim 6, It is characterized in that At least part of the structure of the inner conductor unit (40) and at least part of the structure of the microwave radiation element (1) are located at the same height.

8. The microwave heating assembly according to claim 7, It is characterized in that The microwave radiation element (1) further comprises a first coupling portion (12a) connected to the radiation portion (11a, 11b), wherein the first coupling portion (12a) and a partial structure of the inner conductor unit (40) are located at the same height; Alternatively, the inner conductor unit (40) is arranged around the outer periphery of the containing area (51), and the radiating portion (11a, 11b) is between the inner conductor unit (40) and the containing area (51), and maintains a distance from both the inner conductor unit (40) and the containing area (51).

9. An aerosol generating device, It is characterized in that It comprises a microwave generating component, a driving component (200) and the microwave heating component according to any one of claims 1 to 8; The microwave generating component is used to generate microwaves, and is connected to the microwave heating component to feed the microwaves into the cavity (21); The driving assembly (200) is located outside the outer conductor tube (2), and drives the microwave radiation element (1) to rotate circumferentially around the receiving area (51).

10. The aerosol generating device according to claim 9, It is characterized in that The microwave frequency range of the aerosol generating device is between 2400 MHz and 2500 MHz.

Images