AEROSOL-GENERATING DEVICE AND MICROWAVE HEATING UNIT

Abstract

An aerosol generating device and a microwave heating component. The microwave heating component comprises an inner conductor unit (10) and an outer conductor unit (20); the outer conductor unit (20) comprises a closed end (10a), an open end (10b) opposite to the closed end (10a), and an accommodating cavity (11) formed between the closed end (10a) and the open end (10b), an accommodating area (310) being formed within the accommodating cavity (11); the accommodating cavity (11) comprises a first direction and a second direction, the first direction being perpendicular to the second direction; the inner surface of the outer conductor unit (10) is provided with two ridges (131) protruding toward the accommodating area (310), the ridges (131) extending from the closed end (10a) toward the open end (10b); the inner conductor unit (10) is at least partially mounted within the accommodating cavity (11), and comprises a microwave radiation structure (21) that is located on the same side of the accommodating area (310) as the ridges (131) in the first direction and located between the two ridges (131) in the second direction, the maximum distance of the two ridges (131) in the second direction being less than the length of the accommodating area in the second direction. The microwave heating component adjusts the energy field distribution of the accommodating cavity (11) by means of the two ridges (131), thereby optimizing an energy field.

Description

Aerosol generating device and microwave heating assembly Technical Field

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

[0002] Currently, most aerosol-generating device-related products on the market still rely on traditional heating methods such as conduction and radiation. However, microwaves, as a more efficient, three-dimensional heating method with less thermal inertia, offer significant potential for development in this area. Using microwaves to heat aerosol-generating products requires a small cavity and a high-density energy field. The energy field distribution within the cavity in related technologies is often poorly designed, which can easily lead to poor heating of the aerosol-generating product within the cavity, such as slow aerosol output or partial burning of the aerosol-generating product. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an improved aerosol generating device and microwave heating assembly.

[0004] The technical solution adopted by the present invention to solve the technical problem is as follows: the present invention constructs a microwave heating assembly, including an inner conductor unit and an outer conductor unit;

[0005] The outer conductor unit includes a closed end, an open end opposite to the closed end, and a receiving cavity formed between the closed end and the open end; a receiving area for receiving the aerosol generating article is formed in the receiving cavity; the receiving cavity includes a first direction and a second direction perpendicular to the assembly axis of the aerosol generating article; the first direction is perpendicular to the second direction;

[0006] The inner surface of the outer conductor unit is provided with two ridges protruding toward the accommodating area, and the ridges extend from the closed end toward the open end;

[0007] The inner conductor unit is at least partially installed in the accommodating cavity and includes a microwave radiating structure. In the first direction, the microwave radiating structure and the ridge are located on the same side of the accommodating area. In the second direction, the microwave radiating structure is located between two ridges, and the minimum distance between two ridges on two opposite sides of the microwave radiating structure in the second direction is less than the length of the accommodating area in the second direction.

[0008] In some embodiments, the ridge extends from the closed end toward the open end to a position opposite to the accommodating area; or extends from a position at a set distance from the closed end toward the open end to a position opposite to the accommodating area.

[0009] In some embodiments, the maximum distance between the two ridges in the second direction is less than or equal to the length of the accommodating area in the second direction;

[0010] The two ridges in the second direction are less than or equal to 80% of the length of the accommodating area in the second direction.

[0011] In some embodiments, the accommodating cavity includes a first cavity for accommodating the aerosol-generating article and a second cavity communicating with the first cavity;

[0012] The ridge is located on the inner surface of the first cavity.

[0013] In some embodiments, the outer conductor unit includes a first side wall and a second side wall axially connected to each other; the first side wall defines the first cavity; the second side wall defines the second cavity;

[0014] The inner conductor unit extends from the second cavity to the first cavity;

[0015] A microwave feeding hole is formed on the second side wall, and the microwave feeding hole is communicated with the second cavity of the accommodating cavity.

[0016] In some embodiments, the inner surface of the outer conductor unit is partially recessed to form a groove, and the groove has a notch arranged toward the inner conductor unit; two oppositely arranged edges of the notch form the two ridges.

[0017] In some embodiments, the outer conductor unit includes at least a first cylinder and a second cylinder that are spliced ​​together and penetrate each other; the cross-sectional dimension of the first cylinder is greater than or equal to the cross-sectional dimension of the second cylinder, and the axis of the first cylinder is parallel to the axis of the second cylinder;

[0018] The convex ridge is formed at the joint of the first cylinder and the second cylinder.

[0019] In some embodiments, the inner conductor unit includes a microwave matching structure;

[0020] The microwave matching structure is disposed in the accommodating cavity and is in ohmic contact with the closed end, and extends toward the direction of the open end;

[0021] The microwave radiation structure and the microwave matching structure are spaced apart and are in ohmic contact with the closed end;

[0022] Alternatively, the microwave matching structure is disposed in the accommodating cavity and is in ohmic contact with the closed end, and is coaxially connected to the microwave radiating structure and formed as an integral unit.

[0023] In some embodiments, a fixing member is further included, wherein the fixing member is disposed in the accommodating cavity and located at the open end;

[0024] The fixing member is cylindrical, and a receiving cavity for receiving the aerosol generating product is formed in the fixing member, and the accommodating area is formed in the receiving cavity;

[0025] The fixing member includes a cylindrical wall, a notch is provided on a side of the cylindrical wall facing the ridge, and an edge of the notch abuts against the inner surface of the outer conductor unit;

[0026] An accommodating groove for accommodating at least a portion of the microwave radiation structure is provided on the cylinder wall and located inside the notch.

[0027] An aerosol generating device is also constructed, comprising the microwave heating assembly of the present invention, a microwave feeding unit connected to the inner conductor unit of the microwave heating assembly, and a microwave generating unit connected to the microwave feeding unit.

[0028] The implementation of the aerosol generating device and microwave heating assembly of the present invention has the following beneficial effects: the microwave heating assembly is configured by providing two ridges protruding toward the accommodating area on the inner surface of the outer conductor unit, and each ridge extends from the closed end toward the open end, and in the first direction, the microwave radiation structure and the two ridges are located on the same side of the accommodating area, and in the second direction, the microwave radiation structure is located between the two ridges, and the minimum distance between the two ridges on two opposite sides of the microwave radiation structure in the second direction is less than the length of the accommodating area in the second direction, thereby adjusting the energy field distribution of the accommodating cavity through the two ridges, realizing the optimization of the energy field, ensuring the centralization of the overall energy field and the uniformity of the local field, and thereby optimizing the aerosol output speed while optimizing the aerosol amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0030] FIG1 is a schematic diagram of a partial structure of an aerosol generating device in a first embodiment of the present invention;

[0031] FIG2 is a schematic structural diagram of a local structure of the aerosol generating device shown in FIG1 from another angle;

[0032] FIG3 is a cross-sectional view of a partial structure of the aerosol generating device shown in FIG1 ;

[0033] FIG4 is a schematic structural diagram of a fixing member in the aerosol generating device shown in FIG1 ;

[0034] FIG5 is a diagram of the energy field distribution of the aerosol generating device shown in FIG1 ;

[0035] FIG6 is a partially enlarged schematic diagram of the energy field distribution of the aerosol generating device shown in FIG5 ;

[0036] 7 is a diagram of energy field distribution when the distance D1 between two ridges in the aerosol generating device is less than or equal to 80% of the length D2 of the accommodating area in the second direction;

[0037] FIG8 is a schematic structural diagram of an aerosol generating device in a second embodiment of the present invention;

[0038] FIG9 is a cross-sectional view of the aerosol generating device shown in FIG1 ;

[0039] FIG10 is a diagram showing the energy field distribution of the aerosol generating device shown in FIG1 ;

[0040] FIG11 is a partially enlarged schematic diagram of the energy field distribution of the aerosol generating device shown in FIG1 ;

[0041] FIG12 is a diagram showing the energy field distribution of a conventional aerosol generating device;

[0042] FIG13 is a partially enlarged schematic diagram of the energy field distribution of a conventional aerosol generating device;

[0043] FIG. 14 is a schematic structural diagram of an aerosol generating device in a third embodiment of the present invention. DETAILED DESCRIPTION

[0044] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the references to "upper," "lower," "inner," and "outer," and other references to orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are constructed and operated in specific orientations. These references are intended solely to facilitate the description of the present invention and do not necessarily require the device or component to have a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0045] It should also be noted that, unless otherwise expressly specified or limited, terms such as "connected", "connected", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium; they can be internal communication between two elements or an interactive relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or one or more intervening elements may exist. The terms "first", "second", etc. are used only to facilitate the description of the present technical solution and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of such features. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0046] Figure 1 illustrates a first embodiment of an aerosol-generating device according to the present invention. The aerosol-generating device can heat an aerosol-generating article 200 by feeding microwaves, thereby generating an aerosol for inhalation by a user. The aerosol-generating article 200 can be detachably disposed within the aerosol-generating device. In some embodiments, the aerosol-generating article 200 is columnar, specifically cylindrical, and can be a solid material in the form of strands, granules, or sheets made from plant leaves, flowers, and / or stems. A fragrance component can also be added to the solid material.

[0047] As shown in FIG1 , in this embodiment, the aerosol-generating device may include a housing (not shown), a microwave heating assembly, and a microwave generating unit (not shown). The microwave heating assembly is housed in the housing (not shown) and is configured to generate microwaves therein upon receiving microwaves to form an energy field, thereby heating the aerosol-generating article 200. The microwave generating unit (not shown) may be connected to the microwave heating assembly to feed microwaves.

[0048] In this embodiment, the microwave heating assembly may include an outer conductor unit 10 and an inner conductor unit 20. The inner conductor unit 20 is at least partially disposed in the outer conductor unit 10 and can receive microwaves into the outer conductor unit 10, so that microwaves can be generated in the outer conductor unit 10 to form an energy field.

[0049] As shown in Figures 1 to 3, in this embodiment, the outer conductor unit 10 is made of metal or other highly conductive materials and is used to confine microwave power. In some embodiments, the outer conductor unit 10 is a cylindrical structure and can have a regular shape, such as a rectangular parallelepiped or a cylindrical shape. In some embodiments, the outer conductor unit 10 can have an irregular shape. Specifically, in this embodiment, the outer conductor unit 10 has an irregular shape formed by partially convex or concave portions.

[0050] In this embodiment, the outer conductor unit 10 may include a closed end 10a and an open end 10b, wherein the closed end 10a and the open end 10b are arranged opposite to each other in the axial direction, wherein the open end 10b can be used to receive the aerosol generating article 200.

[0051] In this embodiment, the outer conductor unit 10 includes at least a first sidewall 101, a second sidewall 102, and a third sidewall 103. The first sidewall 101 and the second sidewall 102 are axially connected, non-coaxially arranged, and arranged in a stepped manner. The third sidewall 103 is disposed opposite both the first sidewall 101 and the second sidewall 102. In this embodiment, the outer conductor unit 10 may further include two oppositely disposed fourth sidewalls 104, two oppositely disposed fifth sidewalls 105, and two oppositely disposed sixth sidewalls 106. The two fourth sidewalls 104 are located on opposite sides of the first sidewall 101 and connected to the first sidewall 101. The two fifth sidewalls 105 are located on opposite sides of the second sidewall 102 and connected to the second sidewall 102. The two sixth sidewalls 106 are located on opposite sides of the fifth sidewall 105, each of which is bent to connect to the fifth sidewall 105 and connected to the fourth sidewall 104.

[0052] In this embodiment, the outer conductor unit 10 further includes a first cylindrical body 10c and a second cylindrical body 10d; the first cylindrical body 10c and the second cylindrical body 10d are joined and interpenetrating. The axes of the first cylindrical body 10c and the second cylindrical body 10d are arranged parallel to each other. The cross-sections of the first cylindrical body 10c and the second cylindrical body 10d can be approximately square. It is understood that in other embodiments, the cross-sections of the first cylindrical body 10c and the second cylindrical body 10d are not limited to square and can be circular, semicircular, or other shapes. The cross-sectional dimensions of the first cylindrical body 10c can be larger than the cross-sectional dimensions of the second cylindrical body 10d, and the depth of the first cylindrical body 10c can be smaller than the depth of the second cylindrical body 10d. In other embodiments, the cross-sectional dimensions of the first cylindrical body 10c can be equal to the cross-sectional dimensions of the second cylindrical body 10d. The first cylindrical body 10c can be interconnected and enclosed by a first sidewall 101, a fourth sidewall 104, and a sixth sidewall 106. The second cylinder 10d can be formed by connecting the second side wall 102, the third side wall 103, and the fifth side wall 105 to each other.

[0053] In this embodiment, the outer conductor unit 10 is hollowed out to form a housing chamber 11. Specifically, the first cylindrical body 10c and the second cylindrical body 10d are combined to define the housing chamber 11. The housing chamber 11 is located between the closed end 10a and the open end 10b and accommodates at least a portion of the inner conductor unit 20 for microwave feeding. A housing area 310 is formed within the housing chamber 11, which can be used to accommodate the aerosol-generating article 200. The closed end 10a and the open end 10b are formed axially with respect to the housing chamber 11. The outer conductor unit 10 further comprises an opening 12 and an end wall 14, which are arranged opposite to the end wall 14. In some embodiments, the opening 12 can be covered by a covering structure. The opening 12 corresponds to the open end 10b of the outer conductor unit 10b, and the end wall 14 corresponds to the closed end 10a of the outer conductor unit 10b.

[0054] In this embodiment, the accommodating chamber 11 further includes a first cavity 11a and a second cavity 11b; the first cavity 11a and the second cavity 11b are axially connected and interconnected. Specifically, the first cavity 11a is located at one end of the second cavity 11b, with the open end 10b formed at one end of the first cavity 11a, and the closed end 10a formed at one end of the second cavity 11b. The first cavity 11a is defined by a first sidewall 101, a fourth sidewall 104, a sixth sidewall 106, and a portion of the third sidewall 103. The second cavity 11b is defined by a second sidewall 102, a fifth sidewall 105, and a portion of the third sidewall 103.

[0055] In this embodiment, the accommodating chamber 11 has at least a first direction and a second direction. Both the first direction and the second direction are perpendicular to the assembly direction of the aerosol-generating article 200, and the first direction and the second direction are perpendicular. The first direction can be the X-axis direction, and the second direction can be the Y-axis direction. The first direction has two sides, such as a first side 11c and a second side 11d; the first side 11c and the second side 11d are disposed opposite each other.

[0056] In this embodiment, the inner surface of the outer conductor unit 10 is provided with at least two ridges 131. Specifically, there may be two ridges 131. In a first direction, the two ridges 131 are located on the same side of the accommodating area 310, and each ridge 131 protrudes toward the accommodating area 310. For example, the ridges 131 may protrude toward the accommodating area 310 on the first side 11c, or protrude toward the accommodating area 310 on the second side 11d. Thus, the ridges 131 protrude toward the heated aerosol-generating article 200. The inner surface of the outer conductor unit 10 is deformed by the at least two ridges 131. The provision of the at least two ridges 131 facilitates adjustment of the energy field distribution within the accommodating chamber 11 and compression of the energy field. Specifically, the matrix and local uniformity of the energy field distribution can be optimized, thereby ensuring overall field concentration and local field uniformity. This optimizes aerosol output while maintaining aerosol output rate, prevents local burning of the aerosol-generating article 200, and improves the mouthfeel of the generated aerosol.

[0057] In some embodiments, the ridge 131 can be a pointed structure and extend from the closed end 10a toward the open end 10b. Specifically, it can extend from the closed end 10a to the open end 10b to a position opposite to the accommodating area 310, specifically to the open end 10b. In other embodiments, the ridge 131 can extend from a position at a set distance from the closed end 10a toward the open end 10b to a position opposite to the accommodating area 310. The ridge 131 can be configured to adjust the energy field. Specifically, the ridge 131 can play a role in gathering charges, so that the electric field here is strengthened, so that the energy field is gathered along the axial direction of the accommodating cavity 11 and is relatively uniform.

[0058] Specifically, the inner surface of the outer conductor unit 10 is partially recessed to form a groove 132. Specifically, the third side wall 103 of the outer conductor unit 10, which is opposite to the first side wall 101, is recessed to form a second cylindrical body 10d, thereby forming a groove 132 defined by the second cylindrical body 10d. The groove 132 has a notch 1321 disposed toward the inner conductor unit 20. The notch 1321 is disposed toward the first cylindrical body 10c. Its two oppositely disposed edges are located at the junction of the first cylindrical body 10c and the second cylindrical body 10d, thereby correspondingly forming two ridges 131. That is, the ridge 131 can be formed at the bend between the fifth side wall 105 and the sixth side wall 106. It is understandable that in other embodiments, the ridge 131 is not limited to being formed by the inner portion of the outer conductor unit 10 being recessed.

[0059] In this embodiment, the inner conductor unit 20 is at least partially installed in the accommodating cavity 11 and can be connected to the outer conductor unit 10 to introduce microwaves generated by the microwave generating unit into the accommodating cavity 11. In this embodiment, the inner conductor unit 20 is located in the second cylindrical body 10d and can extend from the second cavity 11b to the first cavity 11a. It includes a microwave radiating structure 21 and a microwave matching structure 22. The microwave radiating structure 21 extends from the second cavity 11b to the first cavity 11a. One end of the microwave radiating structure 21 makes ohmic contact with the closed end 10a of the outer conductor unit 10, and the other end extends axially along the outer conductor unit 10 to form a free end. Specifically, in some embodiments, the microwave radiating structure 21 can be inserted into the end wall 14; in other embodiments, the microwave radiating structure 21 can directly abut the end wall 14. The microwave radiating structure 21 can be a solid columnar structure that can extend from the end wall 14 toward the opening 12. The microwave matching structure 22 is disposed within the outer conductor unit 10, specifically within the second cavity 11b, and is spaced apart from the microwave radiating structure 21. It can establish ohmic contact with the closed end 10a. Specifically, in this embodiment, one end of the microwave matching structure 22 is plugged into the end wall 14, while the other end extends axially along the second cavity 11b, forming a free end. In other embodiments, the microwave matching structure 22 can abut against the end wall 14. In some embodiments, the microwave matching structure 22 can be cylindrical or a combination of two other three-dimensional structures (e.g., a rectangular parallelepiped and a cylindrical shape). The microwave matching structure 22 can be a magnetic coupling, an electrical coupling, or other structure capable of microwave matching, and can be used to couple microwave energy into the accommodating cavity 11.

[0060] In this embodiment, in the first direction, the microwave radiating structure 21 and the two ribs 131 are located on the same side of the accommodating area 310. In the second direction, the microwave radiating structure 21 is located between two of the ribs 131. The minimum distance in the second direction between the two ribs 131 on opposite sides of the microwave radiating structure 21 is less than the length of the accommodating area 310 in the second direction, and the maximum distance D1 between the two ribs 131 in the second direction is less than or equal to the length D2 of the accommodating area 310 in the second direction. The shape and size of the accommodating area 310 can be adapted to the cross-sectional shape and size of the heated aerosol-generating article 200. If the aerosol-generating article 200 is cylindrical, the length D2 of the accommodating area 310 in the second direction is equal to the diameter of the heated aerosol-generating article 200. If the aerosol-generating article 200 is non-cylindrical, such as with a square or rectangular cross-section, the length D2 of the accommodating area 310 in the second direction is equal to the length or width of the aerosol-generating article 200 in the second direction. Alternatively, in some embodiments, the maximum distance D1 between the two ridges 131 is less than or equal to 80% of the length D2 of the accommodating area 310 in the second direction. Only at this ratio can the focused energy field be relatively uniform.

[0061] As shown in FIG4 , in this embodiment, the microwave heating assembly may include a fixing member 30 disposed within the accommodating cavity 11 and located at the open end 10b for securing the aerosol-generating article 200. In this embodiment, the outer conductor unit 10 further includes a support wall 15. The support wall 15 may be located between the first cavity 11a and the second cavity 11b and connected to the first side wall 101 and the second side wall 102. The fixing member 30 is located on the support wall 15. The support wall 15 is disposed parallel to the end wall 14, with a set distance between them. In other embodiments, the support wall 15 may be omitted, and the fixing member 30 may be placed directly on the end wall 14. In this embodiment, the fixing member 30 is generally cylindrical, a hollow structure with one end open. A receiving cavity 31 is formed within the fixing member 30. The receiving cavity 31 is located within the first cavity 11a, and a receiving area 310 is formed within the receiving cavity 31. The cross-sectional shape and dimensions of the receiving area 310 can be adapted to those of the receiving cavity 31. In other words, the receiving cavity 31 can be tightly fitted with the aerosol-generating article 200. The cross-sectional shape of the receiving cavity 31 can be generally circular. The receiving cavity 31 can be used to accommodate the aerosol-generating article 200. In this embodiment, the inner diameter of the receiving cavity 31 can be adapted to the outer diameter of the aerosol-generating article 200. In other embodiments, the cross-sectional dimensions of the receiving area 310 can be smaller than the cross-sectional dimensions of the receiving cavity 31. In some embodiments, the fixing member 30 may include a cylindrical wall 32, and a notch 321 may be defined on the side of the cylindrical wall 32 facing the ridge 131. Specifically, the notch 321 faces the first direction 11c and is disposed opposite the second side 11d. The edge of the notch 321 abuts against the inner surface of the outer conductor unit 10 and is located on the side opposite the ridge 131 and the groove 132. The microwave radiating structure 21 may be disposed on the outer side of the cylindrical wall 32 and may be at least partially disposed within the notch 321. The cylindrical wall 32 may include a receiving groove 3211, which may extend axially along the fixing member 32 and be located inside the notch 321. The groove 3211 may have a generally circular cross-section, allowing a portion of the microwave radiating structure 21 to be accommodated therein.

[0062] As shown in Figures 3 and 4 , in this embodiment, the aerosol generating device further includes a microwave feeding unit 40. The microwave feeding unit 40 is mounted on the outer conductor unit 10. Specifically, the microwave feeding unit 40 is embedded in the side wall of the outer conductor unit 10. Specifically, the side wall of the outer conductor unit 10 may have a feeding hole 16. The microwave feeding unit 40 may be mounted at the feeding hole 16 and partially inserted into the accommodating cavity 11, connecting to the inner conductor unit 20. The microwave feeding unit 40 is also connected to a microwave generating unit (not shown). In this embodiment, the microwave feeding unit 40 may be connected to the microwave matching structure 22 and to the microwave generating unit (not shown) via a coaxial connector or microstrip line, thereby feeding microwaves generated by the microwave generating unit (not shown) into the accommodating cavity 11 via the inner conductor unit 20. In some embodiments, the microwave feeding unit 40 may be made of a metal material, preferably aluminum or copper. Furthermore, its outer surface may be plated with silver or gold.

[0063] As shown in Figures 5, 6, 12 and 13, compared with conventional aerosol generating devices, the aerosol generating device in this embodiment can concentrate the energy field in the accommodating chamber 11 in a certain area by providing at least two ridges 131 on the inner surface of the accommodating chamber 11, and the energy in the area is more evenly distributed in the axial direction.

[0064] As shown in FIG2 and FIG7 , when the interval D1 between the two ridges in the aerosol generating device is set to be less than or equal to 80% of the diameter D2 of the aerosol generating article 200 , the energy field in the accommodating cavity 11 is concentrated in a certain area, and the energy in the area is more evenly distributed in the axial direction.

[0065] Figures 8 and 9 illustrate a second embodiment of the aerosol generating device according to the present invention. This embodiment differs from the first embodiment in that the outer conductor unit 10 can be composed of a first cylindrical body 10c and a second cylindrical body 11d, each having a circular cross-section. The microwave matching structure 22 and the microwave radiating structure 21 are coaxially connected and integrally formed.

[0066] As shown in Figures 10 to 13, compared with conventional aerosol generating devices, the aerosol generating device in this embodiment can concentrate the energy field of the accommodating cavity 11 in a certain area by providing at least two ridges 131 on the inner surface of the outer conductor unit 10, and the energy in the area is more evenly distributed in the axial direction.

[0067] Figure 14 shows a third embodiment of the aerosol generating device of the present invention, which differs from the first embodiment in that the cross-section of the outer conductor unit 10 can be a regular shape, such as a square, and the fixing member 30 can be directly accommodated in the accommodating cavity 11 and located on the end wall 14.

[0068] It is understandable that the above embodiments only express the preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. A microwave heating unit comprising an inner conductor block (20) and an outer conductor block (10), wherein the outer conductor unit (10) comprises a closed end (10a), an open end (10b) opposite the closed end (10a), and a containing cavity (11) formed between the closed end (10a) and the open end (10b); a containing region (310) for containing an aerosol-generating product (200) is formed inside the containing cavity (11); the containing cavity (11) comprises a first direction and a second direction perpendicular to an axial direction of the aerosol-generating product (200); the first direction is perpendicular to the second direction; two convex ribs (131) protruding toward the containing region (310) are located on the inner surface of the outer conductor block (10); the convex ribs (131) continue in the direction from the closed end (10a) to the open end (10b); the inner conductor block (20) is at least partially installed inside the containing cavity (11) and comprises a microwave emitting structure (21); in the first direction, the microwave emitting structure (21) is located on the same side of the containing region (310) as the two convex ribs (131); in the second direction, the microwave emitting structure (21) is located between the two convex ribs (131); and the minimum distance between the two convex ribs (131) on two opposite sides of the microwave emitting structure (21) in the second direction is less than the length of the containing region (310) in the second direction.

2. The microwave heating unit according to claim 1, in which the convex ribs (131) extend from the closed end (10a) to the open end (10b) to a position opposite the containing region (310), or extend from a position remote from the closed end (10a) a predetermined distance to the open end (10b) to a position opposite the containing region (310).

3. The microwave heating unit according to claim 1, wherein the maximum distance between the two convex ribs (131) in the second direction is less than or equal to the length of the containing region (310) in the second direction; the maximum distance between the two convex ribs (131) in the second direction is less than or equal to 80% of the length of the containing region (310) in the second direction.

4. The microwave heating unit according to claim 1, wherein the containing cavity (11) comprises a first chamber (11a) for containing the aerosol-generating product (200) and a second chamber (11b) communicating with the first chamber (11a); convex ribs (131) are located on the inner surface of the first chamber (11a).

5. The microwave heating unit according to claim 4, wherein the outer conductor block (10) comprises a first side wall (101) and a second side wall (102) that are axially connected to each other; the first side wall (101) forms a first chamber (11a); the second side wall (102) forms a second chamber (11b); the inner conductor block (20) continues from the second chamber (11b) to the first chamber (11a); in the second side wall (102) an opening (16) for feeding microwaves is formed; the opening (16) for feeding microwaves communicates with the second chamber (11b) of the containing cavity (11).

6. The microwave heating unit according to claim 2, wherein the inner surface of the outer conductor block (10) is partially recessed to form a recess (132); the recess (132) has a notch (1321) facing the inner conductor block (20); and two convex ribs (131) are formed on two opposite edges of the recess (1321).

7. The microwave heating unit according to claim 1, wherein the outer conductor unit (10) at least comprises a first cartridge (10c) and a second cartridge (10d), which are coupled and communicate with each other; the cross-sectional size of the first cartridge (10c) is greater than or equal to the cross-sectional size of the second cartridge (10d); the axis of the first cartridge (10c) is parallel to the axis of the second cartridge (10d); convex ribs (131) are formed at the mating points of the first cartridge (10c) and the second cartridge (10d).

8. The microwave heating assembly according to claim 1, wherein the inner conductor block (20) comprises a microwave matching structure (22); the microwave matching structure (22) is located inside the containing cavity (11), is in ohmic contact with the closed end (10a) and continues toward the open end (10b); the microwave radiation structure (21) is located at a distance from the microwave matching structure (22) and is in ohmic contact with the closed end (10a); Alternatively, the microwave matching structure (22) is located within the containing cavity (11), is in ohmic contact with the closed end (10a) and is coaxially connected and formed in one piece with the microwave emission structure (21).

9. The microwave heating unit according to claim 1, also comprising a fastening element (30), wherein the fastening element (30) is located inside the containing cavity (11) and is located at the open end (10b); the fastening element (30) has a barrel-shaped form; in the fastening element (30) a containing cavity (31) is formed for receiving the product (200) generating the aerosol; the containing region (310) is formed inside the receiving cavity (31); the fastening element (30) comprises a cylindrical wall (32); on one side of the cylindrical wall (32) facing the convex ribs (131), a gap (321) is provided; the edge of the gap (321) is opposed to the inner surface of the block (10) of the outer conductor; a containing slot (3211) is provided on the cylindrical wall (32) for containing at least a portion of the microwave radiation structure (21); and the containing slot (3211) is located on the inner side of the gap (321).

10. An aerosol generating device comprising a microwave heating unit according to any one of claims 1 to 9, a microwave supply unit (40) connected to an inner conductor unit (20) of the microwave heating unit, and a microwave generation unit connected to the microwave supply unit (40).