Aerosol generating device and microwave heating assembly thereof

Abstract

The utility model discloses an aerosol generating device and a microwave heating assembly thereof, and the microwave heating assembly comprises an outer conductor unit which is cylindrical and comprises an open end and a closed end which are opposite to each other, and a cavity located between the open end and the closed end; the inner conductor unit is arranged in the cavity; the microwave feed-in unit comprises an inner conductor structure, and the inner conductor structure is in elastic ohmic contact with the inner conductor unit; according to the utility model, the problem of poor contact caused by thermal expansion and cold contraction and the like can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of electronic atomization, and in particular to an aerosol generating device and its microwave heating component. Background Technology

[0002] Aerosol generating devices can generate aerosols by heating and atomizing aerosol-forming products using microwave heating. A microwave-heated aerosol generating device includes a microwave heating component, which includes a microwave feed structure for receiving microwaves. The microwave feed efficiency affects the microwave heating effect.

[0003] In related technologies, the feeding connection method of microwave feed structures is generally to directly contact the inner conductor unit located in the outer conductor unit. The pins of the microwave feed structure directly abut against the outer peripheral surface of the inner conductor unit. Since the outer peripheral surface of the inner conductor unit is generally curved, the contact area of ​​the pins is relatively small. Under prolonged use, the heat loss and heat conduction generated during microwave heating will cause slight deformation of the inner conductor unit and the microwave feed structure due to thermal expansion and contraction. This leads to poor electrical contact between the two, increased conduction resistance, and a series of problems such as unstable connection, decreased microwave feed efficiency, and performance degradation. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an improved aerosol generating device and its microwave heating component.

[0005] The technical solution adopted by this utility model to solve its technical problem is: to construct a microwave heating component, comprising:

[0006] The outer conductor unit is cylindrical and includes an open end and a closed end opposite to each other, as well as a cavity located between the open end and the closed end;

[0007] An inner conductor unit is disposed within the cavity; and

[0008] A microwave feed unit includes an inner conductor structure that is in elastic ohmic contact with the inner conductor unit.

[0009] In some embodiments, the inner conductor structure includes a conductive elastic structure, the ends of which are in elastic ohmic contact with the inner conductor unit.

[0010] In some embodiments, the microwave feed unit further includes an outer conductor that is in ohmic contact with the outer conductor unit;

[0011] The elastic structure includes an elastic pin structure partially disposed within the outer conductor; the pin tip of the elastic pin structure is exposed outside the outer conductor, and the elastic element of the elastic pin pushes the pin tip against the inner conductor unit.

[0012] In some embodiments, the microwave feed unit further includes a dielectric layer between the outer conductor and the inner conductor structure; the dielectric layer is bonded to the outer periphery of the syringe of the elastic pin structure.

[0013] In some embodiments, the inner conductor unit is provided with a first groove for the insertion of the needle of the resilient pin structure.

[0014] In some embodiments, a radially penetrating feed hole is provided on the outer peripheral wall of the outer conductor unit; the microwave feed unit is inserted into the feed hole in a direction perpendicular to the axial direction of the outer conductor unit;

[0015] The first groove is opposite to the feed hole.

[0016] In some embodiments, the elastic ejector pin structure includes a longitudinally elongated single-headed spring ejector pin structure or a double-headed elastic ejector pin structure.

[0017] In some embodiments, the outer conductor is cylindrical, and the elastic pin structure is coaxially disposed within the outer conductor.

[0018] In some embodiments, the surface of the resilient ejector pin structure is coated with a first conductive coating.

[0019] In some embodiments, the first conductive coating is a gold coating or a silver coating.

[0020] In some embodiments, the microwave feed unit further includes an outer conductor that is in ohmic contact with the outer conductor unit;

[0021] The inner conductor structure also includes a pin partially disposed in the outer conductor; one end of the pin is in ohmic contact with the inner conductor unit.

[0022] The elastic structure is sleeved on the pin and is used to elastically abut against the inner conductor unit and make ohmic contact with it, and to generate a limiting force that restricts the pin's deviation when the pin makes ohmic contact with the inner conductor unit.

[0023] In some embodiments, the outer conductor is cylindrical, and the elastic structure, the pin, and the outer conductor are coaxial.

[0024] In some embodiments, the insert includes a first needle segment and a second needle segment integrally formed therefrom;

[0025] The second needle segment is partially or completely disposed in the outer conductor; the first needle segment extends into and ohmically contacts the inner conductor unit, and the diameter of the first needle segment is smaller than the diameter of the second needle segment.

[0026] In some embodiments, the elastic structure includes a spring member sleeved on the first needle segment, and the axial length of the spring member is greater than the axial length of the first needle segment.

[0027] In some embodiments, the inner diameter of the spring is equal to or slightly larger than the diameter of the first needle segment.

[0028] In some embodiments, the surface of the spring element is coated with a second conductive coating.

[0029] In some embodiments, the second conductive coating is a gold coating or a silver coating.

[0030] In some embodiments, the inner conductor unit is provided with a second groove for the insertion of the first needle segment; the spring member elastically abuts against the wall surface of the inner conductor unit around the opening of the second groove.

[0031] In some embodiments, a radially penetrating feed hole is provided on the outer peripheral wall of the outer conductor unit; the microwave feed unit is inserted into the feed hole in a direction perpendicular to the axial direction of the outer conductor unit;

[0032] The second groove is opposite to the feed hole.

[0033] In some embodiments, the outer conductor unit is cylindrical, and the elastic structure extends in a direction perpendicular to the axial direction of the outer conductor unit.

[0034] In some embodiments, the inner conductor unit includes a conductor post, the conductor post including a fixed end and a free end; the fixed end is connected to the end wall of the closed end; the free end extends toward the open end;

[0035] The end of the elastic structure is in elastic ohmic contact with the conductor post.

[0036] In some embodiments, a radially penetrating feed hole is provided on the outer peripheral wall of the outer conductor unit; the microwave feed unit is inserted into the feed hole in a direction perpendicular to the axial direction of the outer conductor unit;

[0037] A third groove is provided on the outer peripheral wall of the conductor post, which is opposite to the feed hole;

[0038] The end of the elastic structure is inserted into the third groove and elastically abuts against the inner wall of the third groove, or the end of the elastic structure elastically abuts against the wall of the conductor post around the opening of the third groove.

[0039] In some embodiments, the conductor pillars are coaxially disposed within the outer conductor unit.

[0040] In some embodiments, the inner conductor unit further includes a conductor disk; the conductor disk is coupled to the free end, and the diameter of the conductor disk is larger than the diameter of the conductor post, and a gap is provided between the conductor disk and the inner wall surface of the outer conductor unit.

[0041] In some embodiments, the inner conductor unit further includes a longitudinally elongated probe device; one end of the probe device is inserted into the conductor disk and makes ohmic contact with the conductor disk, and the other end of the probe device extends toward the opening end.

[0042] In some embodiments, the microwave heating assembly further includes a receiving seat mounted on the open end; the receiving seat has an axially extending receiving cavity for receiving aerosol-generated articles; the receiving cavity is disposed within the cavity.

[0043] In some embodiments, the receiving seat further includes a plurality of longitudinally elongated positioning ribs and a plurality of longitudinally elongated support ribs; the positioning ribs are spaced apart on the circumferential surface of the wall of the receiving cavity; the support ribs are radially distributed on the bottom surface of the receiving cavity; a longitudinally extending first air intake channel is formed between at least a portion of adjacent positioning ribs, and a radially extending second air intake channel is formed between at least a portion of adjacent support ribs, and the second air intake channels are respectively connected to the first air intake channels.

[0044] This invention also constructs an aerosol generating device, including a microwave generating device and the aforementioned microwave heating component; the microwave heating component is connected to and in ohmic contact with the microwave generating device.

[0045] The present invention has the following advantages: by making the inner conductor structure of the microwave feed unit in elastic ohmic contact with the inner conductor unit, the problem of poor contact caused by thermal expansion and contraction can be effectively reduced. Attached Figure Description

[0046] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0047] Figure 1 This is a schematic diagram of the external structure of the microwave heating assembly in Embodiment 1 of this utility model;

[0048] Figure 2 yes Figure 1 A schematic diagram of the longitudinal cross-sectional structure of the microwave heating assembly shown.

[0049] Figure 3This is a longitudinal cross-sectional view of the microwave heating assembly in Embodiment 2 of this utility model;

[0050] Figure 4 This is a longitudinal cross-sectional structural diagram of the microwave heating component in Embodiment 3 of this utility model;

[0051] Figure 5 This is a schematic diagram of the inner conductor structure of the microwave feed unit in Embodiment 3 of this utility model;

[0052] Figure 6 This is a scattering parameter diagram obtained by the aerosol generating device according to Example 1 of this utility model;

[0053] Figure 7 This is a scattering parameter diagram obtained by the aerosol generating device according to Example 2 of this utility model;

[0054] Figure 8 This is a scattering parameter diagram obtained by the aerosol generating device according to Example 3 of this utility model.

[0055] Reference numerals: 1. Microwave heating assembly; 2. Aerosol generating product; 11. Outer conductor unit; 12. Inner conductor unit; 13. Receiving base; 14. Microwave feed unit; 111. Closed end; 112. Conductor sidewall; 113. Conductor endwall; 114. Feed hole; 115. Conductor post; 121. Conductor disk; 122. Probe device; 123. Groove; 1211. Receiving part; 131. Fixing part; 132. Positioning rib; 133. Receiving cavity; 1311. Through hole; 1321. Outer conductor; 141. Inner conductor structure; 142. Dielectric layer; 143. Spring pin structure; 144. Needle tip; 1441. Needle tube; 1442.

[0056] Second microwave feed unit 14a; second outer conductor 141a; second inner conductor structure 142a; second dielectric layer 143a; double-headed spring pin structure 144a; first needle 1441a; second needle 1441c; second syringe 1442a;

[0057] Third microwave feed unit 14b; third outer conductor 141b; third inner conductor structure 142b; third dielectric layer 143b; first pin segment 1441b; second pin segment 1442b; spring element 1443b. Detailed Implementation

[0058] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0059] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0060] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0061] This invention discloses an aerosol generating device that utilizes microwave heating of an aerosol generating product 2 to atomize and generate aerosols for inhalation or consumption by a user. The aerosol generating product 2 is a solid aerosol generating product 2, such as processed plant leaf products. It is understood that the aerosol generating product 2 can also be a liquid aerosol generating product 2.

[0062] See Figure 1In Embodiment 1, the aerosol generating device may include a microwave generator (not shown) and a microwave heating assembly 1. The microwave generator can generate microwaves; the microwave heating assembly 1 is connected to the microwave generator to receive microwaves and forms a microwave field within its own cavity. This microwave field can act on the aerosol-generated product 2 to microwave heat it.

[0063] like Figure 1 and Figure 2 As shown, the microwave heating component 1 is generally cylindrical in shape. However, the microwave heating component 1 is not limited to a cylindrical shape; it can also be square, elliptical, or other shapes. In embodiment 1, the microwave heating component 1 may include an outer conductor unit 11, an inner conductor unit 12, a housing 13, and a microwave feed unit 14. The outer conductor unit 11 is cylindrical, having a closed end 111 and an open end 112 opposite to the closed end 111, defining a semi-closed cavity, which is a straight cylinder. The inner conductor unit 12 is used to adjust the resonant frequency and microwave distribution within the cavity. It is disposed within the cavity of the outer conductor unit 11, with one end connected to the closed end 111 of the outer conductor unit 11, making ohmic contact with the end wall of the closed end 111, forming a short-circuit terminal of the microwave heating component 1. The other end of the inner conductor unit 12 extends towards the open end 112 of the outer conductor unit 11, without contacting the outer conductor unit 11, forming an open-circuit terminal of the microwave heating component 1. The receiving base 13 is fixedly or detachably mounted at the opening end 112 of the outer conductor unit 11. It is used to hold the aerosol generating article 2, so that when the aerosol generating article 2 is inserted into the receiving base 13, it can be located in the region where the microwave field is mainly formed. The microwave feed unit 14 is used to feed the microwaves generated by the microwave generator into the cavity (the feeding method may include electrical feeding or magnetic feeding; electrical feeding is preferred). The microwave feed unit 14 is detachably mounted on the outer peripheral wall of the outer conductor unit 11 and extends into the cavity to make elastic ohmic contact with the inner conductor unit 12.

[0064] Preferably, the axes of the inner conductor unit 12, the outer conductor unit 11, and the receiving base 13 coincide with each other.

[0065] like Figure 2As shown, the outer conductor unit 11 may include a conductive conductor sidewall 113 and a conductor endwall 114. The conductor sidewall 113 may be cylindrical, including two opposing ends. The conductor endwall 114 closes onto the first end of the conductor sidewall 113, forming the aforementioned closed end 111; the second end of the conductor sidewall 113 is an open structure, forming the aforementioned open end 112. Furthermore, the conductor sidewall 113 has a radially penetrating feed hole 115 near the conductor endwall 114, which is used for inserting the microwave feed unit 14 into the outer conductor unit 11. The diameter of the feed hole 115 is adapted to the outer diameter of the outer conductor 141 of the microwave feed unit 14.

[0066] The outer conductor unit 11 can be integrally made of a conductive metallic material, which may include at least one of aluminum, copper, gold, silver, and stainless steel; preferably aluminum alloy or copper. Understandably, the outer conductor unit 11 is not limited to being integrally made of a conductive material; it can also be achieved by depositing a third conductive coating on the inner wall surface of a non-conductive cylinder. The material for the third conductive coating may include gold, silver, copper, aluminum, conductive metal oxides, or conductive polymers; wherein the conductive metal oxide may include ITO, AZO, AGZO, and FTO materials. Preferably, the first conductive coating is a silver coating or a gold coating.

[0067] like Figure 2 As shown, the inner conductor unit 12 may include a conductor post 121, a conductor disk 122 disposed above the conductor post 121, and a probe device 123 embedded in the conductor disk 122. Preferably, the axes of the conductor post 121, the conductor disk 122, and the probe device 123 coincide with each other.

[0068] In this embodiment, the conductor post 121 serves as a microwave conductor. It can be cylindrical, with its bottom end (away from the opening 112 of the outer conductor unit 11) coaxially connected to the conductor end wall 114 of the outer conductor unit 11. Its top end (closer to the opening 112) extends towards the opening 112 of the outer conductor unit 11. The diameter of the conductor post 121 is smaller than the inner diameter of the outer conductor unit 11. Understandably, the conductor post 121 is not limited to a cylindrical shape; it can also be square, elliptical, stepped, irregular, or other shapes.

[0069] The conductor post 121 can be integrally made of a conductive metallic material, preferably aluminum alloy or copper. Understandably, the conductor post 121 is not limited to being integrally made of a conductive material; it can also be achieved by depositing a fourth conductive coating on the outer surface of a non-conductive material. The fourth conductive coating is preferably a silver or gold coating.

[0070] like Figure 2As shown, a groove 1211 is provided on the outer peripheral wall of the conductor post 121 opposite to the feed hole 115 of the outer conductor unit 11. This groove 1211 serves two purposes: firstly, it allows one end of the microwave feed unit 14 to be inserted to conduct microwaves; secondly, it reduces the risk of poor contact between the microwave feed unit 14 and the conductor post 121. The groove 1211 is generally a straight cylindrical channel, recessed into the conductor post 121 radially. Of course, the cross-sectional shape of the groove 1211 (the cross-section parallel to the axis of the conductor post 121) can be circular, square, elliptical, or other polygonal shapes, without specific limitations.

[0071] The conductor disk 122 is used for microwave conduction and can also increase its own inductance and capacitance, as well as reduce the resonant frequency, thereby facilitating further reduction in cavity size. The conductor disk 122 can be disc-shaped, with a diameter larger than that of the conductor post 121, and is disposed at the top of the conductor post 121. The conductor disk 122 can be integrally integrated with the conductor post 121, or it can be in ohmic contact with the conductor post 121. It is understood that the conductor disk 122 is not a necessary component of this microwave heating assembly 1, but is used as a preferred embodiment; microwave heating can also be achieved using the conductor post 121 and the probe device 123 without the conductor disk 122.

[0072] The probe device 123 is used to adjust the microwave field distribution and microwave feed frequency. As an independent structure, it can be extracted from the top of the conductor disk 122 / inserted into the conductor disk 122 and forms an ohmic contact with the conductor disk 122.

[0073] In embodiment 1, the probe device 123 may include an elongated probe; the lower end of the probe is inserted from the top of the conductor disk 122, coaxially embedded in the conductor disk 122, and forms good ohmic contact with the conductor disk 122; the upper end of the probe extends upward into the receiving base 13. Understandably, when microwaves are fed into the microwave heating assembly 1, a strong microwave field will be formed around the part of the structure in which the probe device 123 extends into the receiving base 13.

[0074] Optionally, the shape of the upper end of the probe may include one of the following: planar, spherical, ellipsoidal, conical, or frustum-shaped; frustum-shaped is preferred because it can enhance the local field strength, thereby accelerating the atomization speed of the aerosol generating medium.

[0075] The probe device 123 may also include a temperature sensing element (not shown) disposed within the probe, which is used to monitor the internal temperature of the aerosol-generating article 2 inserted into the receiving seat 13 for convenient temperature control. Understandably, the probe can be a solid structure when temperature measurement is not required, and a hollow probe when temperature measurement is required.

[0076] The probe can be integrally made of a conductive metallic material, preferably stainless steel, aluminum alloy, or copper. Understandably, the probe is not limited to being integrally made of a conductive material; it can also be achieved by depositing a fifth conductive coating on the outer surface of a non-conductive material. The fifth conductive coating may include gold, silver, copper, aluminum, conductive metal oxides, or conductive polymers; wherein, the conductive metal oxides include ITO, AZO, AGZO, and FTO materials. The fifth conductive coating is preferably a silver or gold coating.

[0077] like Figure 2 As shown, in Embodiment 1, the receiving base 13 may include a receiving portion 131 and a fixing portion 132 integrally connected to the receiving portion 131. The receiving portion 131 is used to receive the aerosol generating article 2; the fixing portion 132 is used to axially seal the opening end 112 of the outer conductor unit 11 and allow the receiving portion 131 to extend into the cavity, so that the probe device 123 passes through the receiving portion 131.

[0078] The receiving portion 131 may be cylindrical, and its outer diameter may be smaller than the inner diameter of the outer conductor unit 11. The receiving portion 131 includes an axial receiving cavity 1311 for receiving the aerosol generating article 2. The fixing portion 132 may be annular and coaxially connected to the receiving portion 131. The fixing portion 132 may coaxially seal the opening end 112 of the outer conductor unit 11 to coaxially position the receiving portion 131 within the cavity. The fixing portion 132 includes an axial through hole 1321 that connects the receiving cavity 1311 to the external environment, through which the aerosol generating article 2 can be inserted into the receiving cavity 1311.

[0079] like Figure 2 As shown, the receiving base 13 also includes several longitudinally elongated positioning ribs 133. These positioning ribs 133 are evenly spaced and arranged circumferentially on the walls of the receiving cavity 1311 and / or the through hole 1321. Each positioning rib 133 extends in a direction parallel to the axis of the receiving base 13. These positioning ribs 133 can be used to clamp the aerosol generating article 2 inserted into the receiving cavity 1311 and / or the through hole 1321, and in another aspect, a longitudinally extending first air inlet channel is formed between each two adjacent positioning ribs 133 to facilitate the intake of ambient air into the bottom of the aerosol generating article 2, and then into the aerosol generating article 2 to carry away the aerosol generated by microwave heating.

[0080] The receiving base 13 may also include several longitudinal support ribs (not shown); these support ribs are evenly spaced and radially distributed on the bottom surface of the receiving cavity 1311. Understandably, the support ribs serve to support the aerosol generating article 2 on one side, and form several radial second air inlet channels on the other. These second air inlet channels are respectively connected to the aforementioned first air inlet channels to facilitate the intake of ambient air into the bottom of the aerosol generating article 2, and then into the aerosol generating article 2 to carry away the aerosol generated by microwave heating.

[0081] The housing 13 can be made of polymer materials (such as polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), PPSU, PC, ABS, PP, etc.), ceramic materials (alumina, zirconium oxide, etc.), metal, or glass. Of course, in engineering applications, polymer materials are preferred (low cost, low thermal conductivity). The housing 13 can also be made of low-microwave-loss, high-temperature-resistant, and harmless materials such as PI, PEEK, and PTFE.

[0082] like Figure 2 As shown, the microwave feed unit 14 can be inserted through the feed hole 115 located on the periphery of the outer conductor unit 11 and mounted on the outer conductor unit 11. In Embodiment 1, the microwave feed unit 14 is a coaxial structure, which includes an outer conductor 141, an inner conductor structure 142 disposed within the outer conductor 141, and a dielectric layer 143 between the inner conductor structure 142 and the outer conductor 141.

[0083] In this embodiment, the outer conductor 141 is a straight cylindrical structure with open ends; when the microwave feed unit 14 is installed on the outer conductor unit 11, the sidewall of the outer conductor 141 is in ohmic contact with the inner wall surface of the feed hole 115 located on the outer conductor unit 11.

[0084] The inner conductor structure 142 may include a first conductive elastic structure, one end of which makes elastic ohmic contact with the inner conductor unit 12 to ensure electrical conductivity and stability between the inner conductor structure 142 and the inner conductor unit 12. In this embodiment, the elastic structure is a conductive spring-loaded pin structure 144; the spring-loaded pin structure 144 elastically abuts against the inner conductor unit 12. Preferably, the spring-loaded pin structure 144 is a single-ended spring-loaded pin structure, with its cylinder 1442 partially or completely disposed in the outer conductor 141; the pin tip 1441 of the spring-loaded pin structure 144 protrudes from the outer conductor 141 and is inserted into the groove 1211 on the conductor post 121, and is pressed against the inner wall of the groove 1211 by the elastic element of the spring-loaded pin structure. The diameter of the pin tip 1441 of the spring-loaded pin structure 144 is adapted to the diameter of the groove 1211.

[0085] Optionally, when microwaves are connected to the microwave feed unit 14, the microwave generator can conduct microwaves through the needle tube 1442 connected to the spring pin structure 144.

[0086] The dielectric layer 143 is an insulating layer made of insulating materials such as PTFE, which can be tightly bonded to the syringe 1442 of the spring ejector pin structure 144.

[0087] The spring-loaded pin structure 144 can be integrally made of a conductive metal material, preferably aluminum alloy or copper. Understandably, the spring-loaded pin structure 144 is not limited to being integrally made of a conductive material; it can also be achieved by plating a first conductive coating onto the outer surface of a non-conductive material. The first conductive coating is preferably a silver or gold coating; more preferably a gold coating. See also... Figure 3 As shown, Figure 3 The microwave heating component 1 in Embodiment 2 of the present invention is shown. The difference between it and the microwave heating component 1 in Embodiment 1 is that the microwave feed unit 14 in Embodiment 1 is replaced by a second microwave feed unit 14a.

[0088] In this embodiment, the second microwave feed unit 14 is also a coaxial structure, which includes a second outer conductor 141a, a second inner conductor structure 142a disposed within the second outer conductor 141a, and a second dielectric layer 143a between the second inner conductor structure 142a and the second outer conductor 141a.

[0089] The second outer conductor 141a is a straight cylindrical structure with open ends; when the second microwave feed unit 14a is installed in the outer conductor unit 11, the side wall of the second outer conductor 141a is in ohmic contact with the inner wall surface of the feed hole 115 located on the outer conductor unit 11.

[0090] The second inner conductor structure 142 may include a conductive second elastic structure, one end of which makes elastic ohmic contact with the inner conductor unit 12 to ensure electrical conductivity and stability between the second inner conductor structure 142 and the inner conductor unit 12. In this embodiment, the second elastic structure is a conductive double-ended spring-loaded pin structure 144a. The second syringe 1442a of the double-ended spring-loaded pin structure 144a is partially or completely disposed in the second outer conductor 141a; the first needle 1441a and the second needle 1441c of the double-ended spring-loaded pin structure 144a are respectively exposed at both ends of the outer conductor 141; wherein, the first needle 1441a is used to insert into the groove 1211 on the conductor post 121 and make close contact with the inner wall surface of the groove 1211 to form a good ohmic contact. The diameter of the first needle 1441a is adapted to the diameter of the groove 1211. The second needle 1441c is used to connect to a microwave generator to access microwaves.

[0091] The second dielectric layer 143a is an insulating layer made of insulating materials such as PTFE, which can be tightly bonded to the syringe of the spring-loaded pin structure 144.

[0092] The double-headed spring ejector pin structure 144a can be integrally made of a conductive metal material, preferably aluminum alloy or copper. Alternatively, a silver or gold coating can be plated onto the outer surface of a non-conductive material; a gold coating is preferred.

[0093] Please refer to them again. Figure 4 and Figure 5 As shown in the figure, the microwave heating component 1 in Embodiment 3 of this utility model is different from the microwave heating component 1 in Embodiment 1 above in that the microwave feed unit 14 in the microwave heating component 1 in Embodiment 1 above is replaced by a third microwave feed unit 14b.

[0094] In this embodiment, the third microwave feed unit 14b is also a coaxial structure, which includes a third outer conductor 141b, a third inner conductor structure 142b disposed within the third outer conductor 141b, and a third dielectric layer 143b between the third inner conductor structure 142b and the third outer conductor 141b.

[0095] The third outer conductor 141b is a straight cylindrical structure with open ends; when the third microwave feed unit 14b is installed in the outer conductor unit 11, the side wall of the third outer conductor 141b is in ohmic contact with the inner wall surface of the feed hole 115 located on the outer conductor unit 11.

[0096] The third inner conductor structure 142b includes a conductive pin and a conductive third elastic structure. The pin is used for ohmic contact with the inner conductor unit 12, while the third elastic structure, sleeved on the pin, further increases the contact area between the third inner conductor structure 142b and the conductor post 121. Simultaneously, when the pin makes ohmic contact with the inner conductor unit 12, the third elastic structure can elastically deform along the pin's axial direction, generating a limiting force to prevent pin misalignment and thus improve electrical conductivity and stability. The elastic structure, sleeved on the pin, elastically abuts against and makes ohmic contact with the inner conductor unit, and generates a limiting force to prevent pin misalignment when the pin makes ohmic contact with the inner conductor unit.

[0097] In this embodiment, the pin includes a first pin segment 1441b and a second pin segment 1442b integrally formed therefrom. The first pin segment 1441b is a longitudinally elongated cylinder for insertion into the groove 1211 of the inner conductor unit 12, and for close contact with the inner wall surface of the groove 1211 to form a good ohmic contact; the diameter of the first pin segment 1441b is adapted to the diameter of the groove 1211. The second pin segment 1442b is a longitudinally elongated cylinder, which is partially or completely disposed in the third outer conductor 141b, and its diameter is larger than the diameter of the first pin segment 1441b.

[0098] The third elastic structure is a cylindrical spring element 1443b, sleeved on the outer periphery of the first needle segment 1441b, capable of elastic deformation along the axial direction of the first needle segment 1441b. Simultaneously, as... Figure 5 As shown, the length of the spring 1443b is greater than the length of the first needle segment 1441b. When the first needle segment 1441b is inserted into the groove 1211, the end of the spring 1443b near the second needle segment 1442b abuts against the second needle segment 1442b (of course, this end near the second needle segment 1442b can also be directly fixed to the first needle segment 1441b), and the end of the spring 1443b away from the second needle segment 1442b abuts elastically against the wall surface of the conductor post 121 around the opening of the groove 1211, so that the spring 1443b generates a force to press against the second needle segment 1442b and the conductor post 121, thereby achieving the purpose of making the third inner conductor structure 142b in ohmic contact with the conductor post 121.

[0099] Optionally, the pin and / or spring 1443b may be integrally made of a conductive metal material, preferably aluminum alloy or copper. It is understood that the pin and / or spring pin structure 144 is not limited to being integrally made of a conductive material; it can also be achieved by plating a second conductive coating onto the outer surface of a non-conductive material. The second conductive coating is preferably a silver or gold coating; more preferably a gold coating.

[0100] Understandably, in addition to making the elastic structure as the inner conductor structure 142 in elastic ohmic contact with the rigid inner conductor unit 12, the elastic structure can also be provided on the inner conductor unit 12 to make elastic ohmic contact with the rigid inner conductor structure 142.

[0101] The following is based on experimental data and references. Figures 6 to 8 As shown, the function of the improved microwave feed unit 14 of this utility model is specifically demonstrated:

[0102] In Experiment 1, the microwave heating assembly 1 from Example 1 was used for testing. The test results showed that the microwave feed rate was >90%, and the resonant frequency was 2.435 GHz. Meanwhile, Figure 6The diagram shows scattering parameter graphs measured according to microwave heating assembly 1 of Embodiment 1. Figure 6 As can be seen, the scattering parameter S11 can reach -11.8dB.

[0103] In Experiment 2, the microwave heating assembly 1 from Example 2 was used for testing. The test results showed that the microwave feed rate was >90%, and the resonant frequency was 2.422 GHz. Meanwhile, Figure 7 The diagram shows the scattering parameters measured according to the microwave heating assembly 1 of Embodiment 2. Figure 7 As can be seen, the scattering parameter S11 can reach -10.8dB.

[0104] In Experiment 3, the microwave heating component 1 from Example 3 was used for testing. The test results showed that the microwave feed rate was >90%, and the resonant frequency was 2.422 GHz. Meanwhile, Figure 8 The diagram shows the scattering parameters measured according to the microwave heating assembly 1 of Embodiment 3. Figure 8 As can be seen, the scattering parameter S11 can reach -19.0dB.

[0105] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A microwave heating assembly, characterized in that, include: The outer conductor unit is cylindrical and includes an open end and a closed end opposite to each other, as well as a cavity located between the open end and the closed end; An inner conductor unit is disposed within the cavity; as well as A microwave feed unit includes an inner conductor structure that is in elastic ohmic contact with the inner conductor unit.

2. The microwave heating assembly according to claim 1, characterized in that, The inner conductor structure includes a conductive elastic structure, the ends of which are in elastic ohmic contact with the inner conductor unit.

3. The microwave heating assembly according to claim 2, characterized in that, The microwave feed unit also includes an outer conductor that is in ohmic contact with the outer conductor unit; The elastic structure includes an elastic pin structure partially disposed within the outer conductor; the pin tip of the elastic pin structure is exposed outside the outer conductor, and the elastic element of the elastic pin pushes the pin tip against the inner conductor unit.

4. The microwave heating assembly according to claim 3, characterized in that, The microwave feed unit further includes a dielectric layer between the outer conductor and the inner conductor structure; the dielectric layer is bonded to the outer periphery of the syringe of the elastic pin structure.

5. The microwave heating assembly according to claim 3, characterized in that, The inner conductor unit is provided with a first groove for the needle of the elastic pin structure to be inserted.

6. The microwave heating assembly according to claim 5, characterized in that, A radially penetrating feed hole is provided on the outer peripheral wall of the outer conductor unit; the microwave feed unit is inserted into the feed hole in a direction perpendicular to the axial direction of the outer conductor unit; The first groove is opposite to the feed hole.

7. The microwave heating assembly according to claim 3, characterized in that, The elastic ejector pin structure includes a longitudinally elongated single-headed spring ejector pin structure or a double-headed elastic ejector pin structure.

8. The microwave heating assembly according to claim 3, characterized in that, The outer conductor is cylindrical, and the elastic pin structure is coaxially disposed in the outer conductor.

9. The microwave heating assembly according to claim 3, characterized in that, The surface of the elastic ejector pin structure is coated with a first conductive coating.

10. The microwave heating assembly according to claim 9, characterized in that, The first conductive coating is a gold coating or a silver coating.

11. The microwave heating assembly according to claim 2, characterized in that, The microwave feed unit also includes an outer conductor that is in ohmic contact with the outer conductor unit; The inner conductor structure also includes a pin partially disposed in the outer conductor; one end of the pin is in ohmic contact with the inner conductor unit. The elastic structure is sleeved on the pin and is used to elastically abut against the inner conductor unit and make ohmic contact with it, and to generate a limiting force that restricts the pin's deviation when the pin makes ohmic contact with the inner conductor unit.

12. The microwave heating assembly according to claim 11, characterized in that, The outer conductor is cylindrical, and the elastic structure, the pin, and the outer conductor are coaxial.

13. The microwave heating assembly according to claim 11, characterized in that, The insertion pin includes a first needle segment and a second needle segment integrally formed with the first needle segment; The second needle segment is partially or completely disposed in the outer conductor; the first needle segment extends into and ohmically contacts the inner conductor unit, and the diameter of the first needle segment is smaller than the diameter of the second needle segment.

14. The microwave heating assembly according to claim 13, characterized in that, The elastic structure includes a spring element, which is sleeved on the first needle segment, and its axial length is greater than the axial length of the first needle segment.

15. The microwave heating assembly according to claim 14, characterized in that, The inner diameter of the spring element is equal to or slightly larger than the diameter of the first needle segment.

16. The microwave heating assembly according to claim 14, characterized in that, The surface of the spring is coated with a second conductive coating.

17. The microwave heating assembly according to claim 16, characterized in that, The second conductive coating is a gold coating or a silver coating.

18. The microwave heating assembly according to claim 14, characterized in that, The inner conductor unit is provided with a second groove for the insertion of the first needle segment; the spring element elastically abuts against the wall surface of the inner conductor unit around the opening of the second groove.

19. The microwave heating assembly according to claim 18, characterized in that, A radially penetrating feed hole is provided on the outer peripheral wall of the outer conductor unit; the microwave feed unit is inserted into the feed hole in a direction perpendicular to the axial direction of the outer conductor unit; The second groove is opposite to the feed hole.

20. The microwave heating assembly according to claim 2, characterized in that, The outer conductor unit is cylindrical, and the elastic structure extends in a direction perpendicular to the axial direction of the outer conductor unit.

21. The microwave heating assembly according to claim 2, characterized in that, The inner conductor unit includes a conductor post, which has a fixed end and a free end; the fixed end is connected to the end wall of the closed end; the free end extends toward the open end. The end of the elastic structure is in elastic ohmic contact with the conductor post.

22. The microwave heating assembly according to claim 21, characterized in that, A radially penetrating feed hole is provided on the outer peripheral wall of the outer conductor unit; the microwave feed unit is inserted into the feed hole in a direction perpendicular to the axial direction of the outer conductor unit; A third groove is provided on the outer peripheral wall of the conductor post, which is opposite to the feed hole; The end of the elastic structure is inserted into the third groove and elastically abuts against the inner wall of the third groove, or the end of the elastic structure elastically abuts against the wall of the conductor post around the opening of the third groove.

23. The microwave heating assembly according to claim 21, characterized in that, The conductor pillars are coaxially disposed within the outer conductor unit.

24. The microwave heating assembly according to claim 23, characterized in that, The inner conductor unit further includes a conductor disk; the conductor disk is attached to the free end, and the diameter of the conductor disk is larger than the diameter of the conductor post, and there is a gap between the conductor disk and the inner wall surface of the outer conductor unit.

25. The microwave heating assembly according to claim 24, characterized in that, The inner conductor unit also includes a longitudinally elongated probe device; one end of the probe device is inserted into the conductor disk and makes ohmic contact with the conductor disk, and the other end of the probe device extends toward the opening end.

26. The microwave heating assembly according to claim 1, characterized in that, The microwave heating assembly further includes a receiving seat installed at the open end; the receiving seat has an axially extending receiving cavity for receiving the aerosol-generated product; the receiving cavity is disposed in the cavity.

27. The microwave heating assembly according to claim 26, characterized in that, The receiving seat also includes several longitudinal positioning ribs and several longitudinal supporting ribs; these positioning ribs are spaced apart on the circumferential surface of the receiving cavity wall; these supporting ribs are radially distributed on the bottom surface of the receiving cavity; at least some adjacent positioning ribs form a longitudinally extending first air intake channel, and at least some adjacent supporting ribs form a radially extending second air intake channel, and these second air intake channels are respectively connected to these first air intake channels.

28. An aerosol generating device, comprising a microwave generating device, characterized in that, It also includes the microwave heating assembly as described in any one of claims 1 to 27; the microwave heating assembly is connected to and ohmically contacts the microwave generator.

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