WO2024093332A1 - 气溶胶产生装置及其微波加热组件 - Google Patents

气溶胶产生装置及其微波加热组件 Download PDF

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Publication number
WO2024093332A1
WO2024093332A1 PCT/CN2023/105254 CN2023105254W WO2024093332A1 WO 2024093332 A1 WO2024093332 A1 WO 2024093332A1 CN 2023105254 W CN2023105254 W CN 2023105254W WO 2024093332 A1 WO2024093332 A1 WO 2024093332A1
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WIPO (PCT)
Prior art keywords
microwave heating
unit
conductor
heating assembly
microwave
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Application number
PCT/CN2023/105254
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English (en)
French (fr)
Inventor
李东建
梁峰
杜靖
邓洋
蓝永海
卜桂华
Original Assignee
思摩尔国际控股有限公司
深圳麦克韦尔科技有限公司
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Application filed by 思摩尔国际控股有限公司, 深圳麦克韦尔科技有限公司 filed Critical 思摩尔国际控股有限公司
Publication of WO2024093332A1 publication Critical patent/WO2024093332A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means

Definitions

  • the present invention relates to the field of electronic atomization, and in particular to an aerosol generating device and a microwave heating component thereof.
  • the aerosol generating device can heat and atomize the aerosol generating product by microwave heating to generate an aerosol.
  • the microwave heating type aerosol generating device includes a microwave heating component, and the microwave heating component includes a microwave feeding structure for receiving microwaves. Among them, the microwave feeding efficiency affects the microwave heating effect.
  • the feeding connection method of the microwave feeding structure is generally to directly contact the inner conductor unit arranged in the outer conductor unit, and the pin of the microwave feeding structure directly abuts the outer peripheral side of the inner conductor unit. Since the outer peripheral side of the inner conductor unit is generally a curved surface, the area that the pin can contact is small. After long-term use, the heat loss and heat conduction generated by microwave heating will cause the inner conductor unit and the microwave feeding structure to produce slight deformation due to thermal expansion and contraction, resulting in poor electrical contact between the two, increased conduction resistance, and a series of problems such as unstable connection, poor microwave feeding efficiency, and reduced performance.
  • the technical problem to be solved by the present invention is to provide an improved aerosol generating device and a microwave heating component thereof.
  • a microwave heating component including:
  • the outer conductor unit is in a cylindrical shape and includes an open end and a closed end opposite to each other, and a cavity located between the open end and the closed end;
  • the microwave feeding unit comprises an inner conductor structure, wherein the inner conductor structure is in elastic ohmic contact with the inner conductor unit.
  • the inner conductor structure comprises a conductive elastic structure, and a terminal end of the elastic structure is in elastic ohmic contact with the inner conductor unit.
  • the microwave feeding unit further comprises an outer conductor in ohmic contact with the outer conductor unit;
  • the elastic structure includes an elastic ejector pin structure partially disposed in the outer conductor; the needle head of the elastic ejector pin structure is exposed outside the outer conductor, and the elastic member of the elastic ejector pin pushes the needle head to press against the inner conductor unit.
  • the microwave feeding 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 ejector pin structure.
  • the inner conductor unit is provided with a first groove for inserting the needle of the elastic ejector structure.
  • a radially penetrating feeding hole is provided on the outer peripheral wall surface of the outer conductor unit; the microwave feeding unit is inserted into the feeding hole along a direction perpendicular to the axial direction of the outer conductor unit;
  • the first groove is opposite to the feeding hole.
  • the elastic ejector pin structure includes a single-head spring ejector pin structure or a double-head elastic ejector pin structure in an elongated shape.
  • the outer conductor is cylindrical, and the elastic ejector structure is coaxially disposed in the outer conductor.
  • the surface of the elastic ejector pin structure is plated with a first conductive coating.
  • the first conductive coating is a gold coating or a silver coating.
  • the microwave feeding unit further comprises an outer conductor in ohmic contact with the outer conductor unit;
  • the inner conductor structure further comprises 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 plug pin and is used for elastically abutting against the inner conductor unit and making ohmic contact therewith, and generating a limiting force to limit the displacement of the plug pin when the plug pin makes ohmic contact with the inner conductor unit.
  • the outer conductor is cylindrical, and the elastic structure, the pin and the outer conductor are coaxial.
  • the insertion needle includes a first needle segment and a second needle segment integrally combined with the first needle segment;
  • the second needle segment is partially or completely disposed in the outer conductor; the first needle segment extends toward the inner conductor unit and is in ohmic contact therewith, and a diameter of the first needle segment is smaller than a diameter of the second needle segment.
  • the elastic structure includes a spring member, which is sleeved on the first needle segment and has an axial length greater than the axial length of the first needle segment.
  • the inner diameter of the spring member is equal to or slightly larger than the diameter of the first needle segment.
  • the surface of the spring member is plated with a second conductive coating.
  • the second conductive coating is a gold coating or a silver coating.
  • the inner conductor unit is provided with a second groove for inserting the first needle segment; the spring element elastically abuts against the wall surface of the inner conductor unit around the notch of the second groove.
  • a radially penetrating feeding hole is provided on the outer peripheral wall surface of the outer conductor unit; the microwave feeding unit is inserted into the feeding hole along a direction perpendicular to the axial direction of the outer conductor unit;
  • the second groove is opposite to the feeding hole.
  • the outer conductor unit is cylindrical, and the elastic structure extends in a direction perpendicular to the axial direction of the outer conductor unit.
  • the inner conductor unit includes a conductor column, and the conductor column includes 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.
  • a radially penetrating feeding hole is provided on the outer peripheral wall surface of the outer conductor unit; the microwave feeding unit is inserted into the feeding hole along a direction perpendicular to the axial direction of the outer conductor unit;
  • a third groove is provided on the outer peripheral wall surface of the conductor column, which is opposite to the feeding hole;
  • the end of the elastic structure is inserted into the third groove and elastically abuts against the inner wall surface of the third groove, or the end of the elastic structure elastically abuts against the wall surface of the conductor column around the notch of the third groove.
  • the conductor post is coaxially disposed in the outer conductor unit.
  • the inner conductor unit further includes a conductor disk; the conductor disk is coupled to the free end, and a diameter of the conductor disk is greater than a diameter of the conductor column, and a distance is provided between the conductor disk and an inner wall surface of the outer conductor unit.
  • the inner conductor unit further includes a probe device in a longitudinal shape; one end of the probe device is inserted into the conductor disk and is in ohmic contact with the conductor disk, and the other end of the probe device extends toward the open end.
  • the microwave heating assembly further comprises a receiving seat mounted on the open end; the receiving seat has an axially extending receiving cavity for receiving the aerosol generating product; the receiving cavity is disposed in the cavity.
  • the receiving seat also includes a plurality of longitudinal positioning ribs and a plurality of longitudinal supporting ribs; these positioning ribs are arranged at intervals on the circumference of the wall of the receiving cavity; these supporting ribs are radially distributed on the bottom surface of the receiving cavity; a first air inlet channel extending longitudinally is formed between at least some adjacent positioning ribs, and a second air inlet channel extending radially is formed between at least some adjacent supporting ribs, and these second air inlet channels are respectively connected to these first air inlet channels.
  • the present invention also constructs an aerosol generating device, which includes a microwave generating device and the above-mentioned microwave heating component; the microwave heating component is connected to the microwave generating device and is in ohmic contact with the microwave generating device.
  • the implementation of the present invention has the following beneficial effects: by making the inner conductor structure of the microwave feeding unit and the inner conductor unit in elastic ohmic contact, the problem of poor contact caused by thermal expansion and contraction can be effectively reduced.
  • FIG1 is a schematic diagram of the external structure of a microwave heating assembly in Example 1 of the present invention.
  • FIG2 is a schematic diagram of the longitudinal cross-sectional structure of the microwave heating assembly shown in FIG1 ;
  • FIG3 is a schematic diagram of the longitudinal cross-sectional structure of the microwave heating assembly in Example 2 of the present invention.
  • FIG4 is a schematic diagram of the longitudinal cross-sectional structure of the microwave heating assembly in Example 3 of the present invention.
  • FIG. 5 is a schematic structural diagram of the inner conductor structure of the microwave feeding unit in Embodiment 3 of the present invention.
  • FIG6 is a scattering parameter diagram measured by the aerosol generating device according to Example 1 of the present invention.
  • FIG7 is a scattering parameter diagram measured by the aerosol generating device according to Example 2 of the present invention.
  • FIG. 8 is a diagram of scattering parameters measured by the aerosol generating device according to Example 3 of the present invention.
  • microwave heating assembly 1 microwave heating assembly 1; aerosol generating product 2; outer conductor unit 11; inner conductor unit 12; receiving seat 13; microwave feeding unit 14; closed end 111; open end 112; conductor side wall 113; conductor end wall 114; feeding hole 115; conductor column 121; conductor disk 122; probe device 123; groove 1211; receiving portion 131; fixing portion 132; positioning rib 133; receiving cavity 1311; through hole 1321; outer conductor 141; inner conductor structure 142; dielectric layer 143; spring ejector structure 144; needle head 1441; needle tube 1442;
  • the terms such as “installed”, “connected”, “connected”, “fixed”, “set” and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
  • installed can be a fixed connection, a detachable connection, or an integral one
  • it can be a mechanical connection or an electrical connection
  • it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
  • an element 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 there may be one or more intermediate elements.
  • the present invention constructs an aerosol generating device, which can use microwaves to heat an aerosol generating product 2 to generate aerosols by atomization, so as to be inhaled or inhaled by a user.
  • the aerosol generating product 2 is a solid aerosol generating product 2 such as a processed plant leaf product. It can be understood that the aerosol generating product 2 can also be a liquid aerosol generating product 2.
  • the aerosol generating device in embodiment 1 may include a microwave generating device (not shown) and a microwave heating component 1.
  • the microwave generating device may generate microwaves; the microwave heating component 1 is connected to the microwave generating device to receive microwaves, and forms a microwave field in its own cavity, and the microwave field may act on the aerosol generating product 2 to achieve microwave heating thereof.
  • the microwave heating component 1 is roughly cylindrical.
  • the microwave heating component 1 is not limited to the cylindrical shape, and it can also be in other shapes such as a square column, an elliptical column, etc.
  • the microwave heating component 1 may include an outer conductor unit 11, an inner conductor unit 12, a receiving seat 13, and a microwave feeding unit 14.
  • the outer conductor unit 11 is cylindrical, and has a closed end 111 and an open end 112 opposite to the closed end 111, which is used to define a semi-closed cavity, and the cavity is in the shape of a straight cylinder.
  • the inner conductor unit 12 is used to adjust the resonant frequency and microwave distribution in the cavity.
  • the receiving seat 13 is fixedly or detachably mounted at the open end 112 of the outer conductor unit 11, and is used to load the aerosol generating product 2, so that when the aerosol generating product 2 is inserted into the receiving seat 13, it can be in the area where the microwave field is mainly formed.
  • the microwave feeding unit 14 is used to feed the microwave generated by the microwave generating device into the cavity (the feeding method may include an electrical feeding method or a magnetic feeding method; preferably an electrical feeding method), and the microwave feeding unit 14 is detachably mounted on the outer peripheral wall of the outer conductor unit 11, and at the same time extends into the cavity to make elastic ohmic contact with the inner conductor unit 12.
  • the feeding method may include an electrical feeding method or a magnetic feeding method; preferably an electrical feeding method
  • the microwave feeding unit 14 is detachably mounted on the outer peripheral wall of the outer conductor unit 11, and at the same time extends into the cavity to make elastic ohmic contact with the inner conductor unit 12.
  • the axes of the inner conductor unit 12 , the outer conductor unit 11 and the receiving seat 13 coincide with each other.
  • the outer conductor unit 11 may include a conductive conductor side wall 113 and a conductor end wall 114.
  • the conductor side wall 113 may be cylindrical and include two opposite ends.
  • the conductor end wall 114 is closed on the first end of the conductor side wall 113 to form the closed end 111 mentioned above; the second end of the conductor side wall 113 is an open structure to form the open end 112 mentioned above.
  • a radially through feeding hole 115 is provided on the conductor side wall 113 near the conductor end wall 114, and the feeding hole 115 is used for the microwave feeding unit 14 to be inserted into the outer conductor unit 11.
  • the aperture of the feeding hole 115 is adapted to the outer diameter of the outer conductor 141 of the microwave feeding unit 14.
  • the outer conductor unit 11 can be made of a conductive metal material, and its material may include at least one of aluminum, copper, gold, silver, and stainless steel; preferably aluminum alloy or copper. It can be understood that the outer conductor unit 11 is not limited to being made of a conductive material, and it can also be achieved by plating a third conductive coating on the inner wall of the non-conductive cylinder.
  • the material of 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.
  • the first conductive coating is a silver coating or a gold coating.
  • the inner conductor unit 12 may include a conductor column 121, a conductor disk 122 disposed above the conductor column 121, and a probe device 123 embedded in the conductor disk 122.
  • the axes of the conductor column 121, the conductor disk 122 and the probe device 123 coincide with each other.
  • the conductor column 121 plays a role in microwave conduction, and may be cylindrical, and one end (bottom end) of the conductor column 121 away from the open end 112 of the outer conductor unit 11 is coaxially connected to the conductor end wall 114 of the outer conductor unit 11, and one end (top end) of the conductor column 121 close to the open end 112 extends toward the open end 112 of the outer conductor unit 11.
  • the diameter of the conductor column 121 is smaller than the inner diameter of the outer conductor unit 11. It can be understood that the conductor column 121 is not limited to being cylindrical, and may also be in other shapes such as square column, elliptical column, stepped column, irregular column, etc.
  • the conductor column 121 can be made of a conductive metal material, preferably aluminum alloy or copper. It is understandable that the conductor column 121 is not limited to being made of a conductive material, and can also be achieved by plating a fourth conductive coating on the outer surface of a non-conductive body.
  • the fourth conductive coating is preferably plated with a silver coating or a gold coating.
  • a groove 1211 is further provided on the outer peripheral wall of the conductor column 121 opposite to the feeding hole 115 of the outer conductor unit 11.
  • the groove 1211 is used to insert one end of the microwave feeding unit 14 to achieve microwave conduction on the one hand; on the other hand, it can reduce the risk of poor contact between the microwave feeding unit 14 and the conductor column 121.
  • the groove 1211 is a straight cylindrical channel as a whole, and is recessed into the inside of the conductor column 121 along the radial direction of the conductor column 121.
  • the cross-section of the groove 1211 (the cross-section parallel to the axis of the conductor column 121) can be square, elliptical or other polygonal in addition to being circular, and no specific limitation is made here.
  • the conductor disc 122 is used for microwave conduction, and can also increase its own inductance and capacitance, and reduce the resonant frequency, thereby facilitating further reduction of the cavity size.
  • the conductor disc 122 can be in the shape of a disc, with a diameter greater than the diameter of the conductor post 121, and is disposed on the top of the conductor post 121.
  • the conductor disc 122 can be integrally combined with the conductor post 121, or can be in ohmic contact with the conductor post 121.
  • the conductor disc 122 is not a necessary component of the microwave heating assembly 1, and is applied in this embodiment as a preferred solution; in the absence of the conductor disc 122, microwave heating can also be achieved by relying on the conductor post 121 and the probe device 123.
  • the probe device 123 is used to adjust the microwave field distribution and the microwave feeding frequency. As an independent structure, the probe device 123 can be withdrawn from the top of the conductor disk 122 or inserted into the conductor disk 122 to form an ohmic contact with the conductor disk 122 .
  • the probe device 123 may include a longitudinal 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 a good ohmic contact with the conductor disk 122; the upper end of the probe extends upward into the receiving seat 13. It can be understood that when microwaves are fed into the microwave heating assembly 1, a strong microwave field will be formed around the portion of the probe device 123 extending into the receiving seat 13.
  • the shape of the upper end of the probe may include one of a plane, a sphere, an ellipsoid, a cone or a truncated cone; a truncated cone is preferred because it can enhance the local field strength and thereby accelerate the atomization speed of the aerosol generating medium.
  • the probe device 123 may also include a temperature measuring element (not shown) disposed inside the probe, which is used to monitor the internal temperature of the aerosol generating product 2 inserted into the receiving seat 13 to facilitate temperature control. It can be understood that when temperature measurement is not required, the probe may be a solid structure; and when temperature measurement is required, the probe may be a hollow probe.
  • the probe can be made of a conductive metal material, preferably stainless steel, aluminum alloy or copper. It is understandable that the probe is not limited to being made of a conductive material, and it can also be achieved by plating a fifth conductive coating on the outer surface of a non-conductive body.
  • the fifth conductive coating may include gold, silver, copper, aluminum, conductive metal oxides or conductive polymers; wherein the conductive metal oxide includes ITO, AZO, AGZO, FTO materials.
  • the fifth conductive coating is preferably plated with a silver coating or a gold coating.
  • the receiving seat 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 product 2;
  • the fixing portion 132 is used to axially block the open 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 is inserted into the receiving portion 131.
  • 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 product 2.
  • the fixing portion 132 may be annular and coaxially connected to the receiving portion 131.
  • the fixing portion 132 may be coaxially sealed at the open end 112 of the outer conductor unit 11 to coaxially arrange the receiving portion 131 in the cavity.
  • the fixing portion 132 includes an axial through hole 1321 that connects the receiving cavity 1311 with the external environment, and the aerosol generating product 2 can be inserted into the receiving cavity 1311 through the through hole 1321.
  • the receiving seat 13 further includes a plurality of longitudinal positioning ribs 133. These positioning ribs 133 are evenly spaced and arranged on the circumference of the wall 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 seat 13. In one aspect, these positioning ribs 133 can be used to clamp the aerosol generating product 2 inserted into the receiving cavity 1311 and/or the through hole 1321.
  • a longitudinally extending first air inlet channel is formed between each two adjacent positioning ribs 133 to facilitate the ambient air to be inhaled into the bottom of the aerosol generating product 2, and then enter the aerosol generating product 2 to take away the aerosol generated by microwave heating.
  • the receiving seat 13 may also include a plurality of longitudinal supporting ribs (not shown); these supporting ribs are evenly spaced and radially distributed on the bottom surface of the receiving cavity 1311. It can be understood that the supporting ribs are used to support the aerosol generating product 2 on one side, and form a plurality of radial second air inlet channels on the other side. These second air inlet channels are respectively connected to the first air inlet channels mentioned above, so as to facilitate the ambient air to be inhaled into the bottom of the aerosol generating product 2, and then enter the aerosol generating product 2 to take away the aerosol generated by microwave heating.
  • the receiving seat 13 can be made of polymer materials (such as polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), ppsu, pc, ABS, pp, etc.), or ceramic materials (alumina, zirconia, etc.).
  • the receiving seat 13 can also be made of metal or glass. Of course, in engineering applications, it is preferably made of polymer materials (low cost and low thermal conductivity).
  • the receiving seat 13 can also be made of low microwave loss, high temperature resistant and harmless materials such as PI, PEEK, and PTFE.
  • the microwave feeding unit 14 can be inserted from the feeding hole 115 located on the peripheral side of the outer conductor unit 11 and mounted on the outer conductor unit 11.
  • the microwave feeding unit 14 is a coaxial structure, which includes an outer conductor 141, an inner conductor structure 142 disposed in the outer conductor 141, and a dielectric layer 143 between the inner conductor structure 142 and the outer conductor 141.
  • the outer conductor 141 is a straight cylindrical structure with openings at both ends; when the microwave feeding unit 14 is installed on the outer conductor unit 11, the side wall of the outer conductor 141 is in ohmic contact with the inner wall surface of the feeding hole 115 located on the outer conductor unit 11.
  • the inner conductor structure 142 may include a conductive first elastic structure, one end of which is in elastic ohmic contact with the inner conductor unit 12 to ensure the electrical conductivity and stability between the inner conductor structure 142 and the inner conductor unit 12.
  • the elastic structure is a conductive spring ejector structure 144; the spring ejector structure 144 elastically abuts against the inner conductor unit 12.
  • the spring ejector structure 144 is a single-head spring ejector structure, and its needle barrel 1442 is partially or completely arranged in the outer conductor 141; the needle head 1441 of the spring ejector structure 144 is exposed outside the outer conductor 141, and is used to be inserted into the groove 1211 on the conductor column 121, and the elastic member of the spring ejector structure is pressed against the inner wall surface of the groove 1211.
  • the diameter of the needle head 1441 of the spring ejector structure 144 is adapted to the diameter of the groove 1211.
  • the microwave generating device can complete the conduction of the microwave through the needle tube 1442 connected to the spring ejector structure 144 .
  • the dielectric layer 143 is an insulating layer made of insulating materials such as PTFE material, and can be tightly bonded to the needle cylinder 1442 of the spring ejector structure 144 .
  • the spring ejector pin structure 144 can be made of a conductive metal material, preferably aluminum alloy or copper. It can be understood that the spring ejector pin structure 144 is not limited to being made of a conductive material, and can also be achieved by plating a first conductive coating on the outer surface of a non-conductive body.
  • the first conductive coating is preferably plated with a silver coating or a gold coating; more preferably a gold coating.
  • FIG. 3 shows a microwave heating component 1 in Example 2 of the present invention, which differs from the microwave heating component 1 in the above-mentioned Example 1 in that the microwave feeding unit 14 of the microwave heating component 1 in the above-mentioned Example 1 is replaced by a second microwave feeding unit 14a.
  • the second microwave feeding unit 14 is also a coaxial structure, which includes a second outer conductor 141a, a second inner conductor structure 142a disposed in the second outer conductor 141a, and a second dielectric layer 143a between the second inner conductor structure 142a and the second outer conductor 141a.
  • the second outer conductor 141a is a straight cylindrical structure with openings at both ends.
  • the side wall of the second outer conductor 141a is in ohmic contact with the inner wall surface of the feeding hole 115 located on the outer conductor unit 11.
  • the second inner conductor structure 142 may include a conductive second elastic structure, one end of which is in elastic ohmic contact with the inner conductor unit 12 to ensure the electrical conductivity and stability between the second inner conductor structure 142 and the inner conductor unit 12.
  • the second elastic structure is a conductive double-headed spring ejector structure 144a.
  • the second needle cylinder 1442a of the double-headed spring ejector structure 144a is partially or completely arranged in the second outer conductor 141a; the first needle 1441a and the second needle 1441c of the double-headed spring ejector structure 144a are respectively exposed outside the two ends of the outer conductor 141; wherein the first needle 1441a is used to be inserted into the groove 1211 on the conductor column 121, and is in 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 be connected to the microwave generating device to access the microwave.
  • the second dielectric layer 143 a is an insulating layer made of insulating materials such as PTFE, and can be tightly bonded to the needle cylinder of the spring ejector structure 144 .
  • the double-headed spring ejector pin structure 144a can be made of a conductive metal material, preferably aluminum alloy or copper.
  • the outer surface of the non-conductive body can also be plated with a silver coating or a gold coating, preferably a gold coating.
  • the microwave heating assembly 1 in Embodiment 3 of the present invention is shown, which differs from the microwave heating assembly 1 in Embodiment 1 in that the microwave feeding unit 14 of the microwave heating assembly 1 in Embodiment 1 is replaced by a third microwave feeding unit 14 b.
  • the third microwave feeding unit 14b is also a coaxial structure, which includes a third outer conductor 141b, a third inner conductor structure 142b disposed in the third outer conductor 141b, and a third dielectric layer 143b between the third inner conductor structure 142b and the third outer conductor 141b.
  • the third outer conductor 141b is a straight cylindrical structure with openings at both ends.
  • the side wall of the third outer conductor 141b is in ohmic contact with the inner wall surface of the feeding hole 115 located on the outer conductor unit 11.
  • the third inner conductor structure 142b includes a conductive pin and a conductive third elastic structure.
  • the pin is used to make ohmic contact with the inner conductor unit 12, and the third elastic structure is sleeved on the pin, which can further increase the contact area between the third inner conductor structure 142b and the conductor column 121.
  • the third elastic structure can be elastically deformed along the axial direction of the pin when the pin is in ohmic contact with the inner conductor unit 12, generating a limiting force that limits the pin's displacement to avoid poor contact with the inner conductor unit 12, thereby improving the electrical conduction performance and stability.
  • the elastic structure is sleeved on the pin, and is used to elastically abut the inner conductor unit and make ohmic contact with it, and generates a limiting force that limits the pin's displacement when the pin is in ohmic contact with the inner conductor unit.
  • the pin includes a first pin segment 1441b and a second pin segment 1442b integrated with the first pin segment 1441b.
  • the first pin segment 1441b is in the shape of a longitudinally long cylinder, and is used to be inserted into the groove 1211 of the inner conductor unit 12, and is in 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 in the shape of a longitudinally long cylinder, which is partially or completely disposed in the third outer conductor 141b, and its diameter is greater than the diameter of the first pin segment 1441b.
  • the third elastic structure is a cylindrical spring member 1443b, which is sleeved on the outer periphery of the first needle segment 1441b and can be elastically deformed along the axial direction of the first needle segment 1441b. At the same time, as shown in FIG5 , the length of the spring member 1443b is greater than the length of the first needle segment 1441b.
  • the end of the spring member 1443b close to the second needle segment 1442b abuts against the second needle segment 1442b (of course, the end close to the second needle segment 1442b can also be directly fixed on the first needle segment 1441b), and the end of the spring member 1443b away from the second needle segment 1442b abuts against the wall surface of the conductor column 121 around the notch of the groove 1211, so that the spring member 1443b generates a force to press against the second needle segment 1442b and the conductor column 121, thereby achieving the purpose of firmly contacting the third inner conductor structure 142b with the conductor column 121 in ohmic contact.
  • the pin and/or spring member 1443b may be made of a conductive metal material, preferably aluminum alloy or copper. It is understandable that the pin and/or spring pin structure 144 is not limited to being made of a conductive material, and may also be realized by plating a second conductive coating on the outer surface of a non-conductive body.
  • the second conductive coating is preferably plated with a silver coating or a gold coating; more preferably a gold coating.
  • an elastic structure may also be provided on the inner conductor unit 12 to form an elastic ohmic contact with the rigid inner conductor structure 142 .
  • Example 1 the microwave heating component 1 of Example 1 was used for testing. After testing, it can be obtained that the microwave feeding effect is greater than 90%, and the resonant frequency is 2.435 GHZ.
  • FIG6 shows a scattering parameter diagram measured according to the microwave heating component 1 of Example 1. It can be seen from FIG6 that the scattering parameter S11 can reach -11.8 dB.
  • Example 2 the microwave heating assembly 1 of Example 2 was used for testing. After testing, it can be obtained that the microwave feeding effect is greater than 90%, and the resonant frequency is 2.422 GHZ.
  • FIG7 shows a scattering parameter diagram measured according to the microwave heating assembly 1 of Example 2. It can be seen from FIG7 that the scattering parameter S11 can reach -10.8 dB.
  • Example 3 the microwave heating assembly 1 of Example 3 was used for testing. After testing, it can be obtained that the microwave feeding effect is greater than 90%, and the resonant frequency is 2.422 GHZ.
  • FIG8 shows a scattering parameter diagram measured according to the microwave heating assembly 1 of Example 3. It can be seen from FIG8 that the scattering parameter S11 can reach -19.0 dB.

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Abstract

一种微波加热组件（1），包括外导体单元（11），呈筒状，具有相对的封闭端（111）和开口端（112）及半封闭式的腔体；内导体单元(12)，用于调节腔体中的谐振频率及微波分布，设置在外导体单元（11）的腔体中，一端连接于外导体单元（11）的封闭端（111），与封闭端（111）的端壁欧姆接触，形成微波加热组件（1）的短路端；微波馈入单元(14)，用于将微波发生装置产生的微波馈入至腔体内，可拆卸地安装于外导体单元（11）的外周壁，伸入至腔体内与内导体单元（12）弹性欧姆接触，其内导体结构（142）包括可导电的第一弹性结构，第一弹性结构一末端通过与内导体单元（12）弹性欧姆接触，以确保内导体结构（142）与内导体单元（12）之间电导通性能和稳定性，弹性结构为可导电的弹簧顶针结构（144）；弹簧顶针结构（144）弹性抵接于内导体单元（12）。

Description

气溶胶产生装置及其微波加热组件 技术领域
本发明涉及电子雾化领域，尤其涉及气溶胶产生装置及其微波加热组件。
 背景技术
气溶胶产生装置可以通过微波加热的方式为气溶胶生成制品加热雾化，以产生气溶胶。微波加热式的气溶胶产生装置包括微波加热组件，该微波加热组件包括一个用于接入微波的微波馈入结构。其中，微波的馈入效率影响着微波加热效果。
在相关技术中，微波馈入结构的馈入连接方式一般是直接与设置于外导体单元中的内导体单元接触，微波馈入结构的插针直接抵接内导体单元的外周侧面，由于该内导体单元的外周侧面一般为曲面，插针所能接触的面积较小。在长时间使用下，微波加热时所产生的热损耗和热传导作用会令内导体单元与微波馈入结构因热胀冷缩而产生微小的变形，导致该两者之间电导通接触不良，导通电阻变大，产生连接导通不稳定、微波馈入效率变差、性能下降等一连串的问题。
 发明内容
本发明要解决的技术问题在于，提供一种改进后的气溶胶产生装置及其微波加热组件。
本发明解决其技术问题所采用的技术方案是：构造一种微波加热组件，包括：
外导体单元，呈筒状，其包括相对的一个开口端和一个封闭端，以及位于所述开口端与所述封闭端之间的腔体；
内导体单元，设置于所述腔体内；以及
微波馈入单元，包括内导体结构，所述内导体结构与所述内导体单元弹性欧姆接触。
在一些实施例中，所述内导体结构包括可导电的弹性结构，所述弹性结构的末端与所述内导体单元弹性欧姆接触。
在一些实施例中，所述微波馈入单元还包括与所述外导体单元欧姆接触的外导体；
所述弹性结构包括部分设置于所述外导体内的弹性顶针结构；所述弹性顶针结构的针头外露于所述外导体外，且所述弹性顶针的弹性件推动所述针头抵紧所述内导体单元。
在一些实施例中，所述微波馈入单元还包括介于所述外导体和所述内导体结构之间的介质层；所述介质层粘接于所述弹性顶针结构的针筒外周。
在一些实施例中，所述内导体单元上设有供所述弹性顶针结构的针头插入的第一凹槽。
在一些实施例中，所述外导体单元的外周壁面上设有一个径向贯穿的馈入孔；所述微波馈入单元沿垂直于所述外导体单元轴向的方向插入至所述馈入孔中；
所述第一凹槽与所述馈入孔相对。
在一些实施例中，所述弹性顶针结构包括呈纵长形的单头弹簧顶针结构或双头弹性顶针结构。
在一些实施例中，所述外导体呈筒状，所述弹性顶针结构共轴地设置在所述外导体中。
在一些实施例中，所述弹性顶针结构的表面镀覆有第一导电涂层。
在一些实施例中，所述第一导电涂层为金涂层或者银涂层。
在一些实施例中，所述微波馈入单元还包括与所述外导体单元欧姆接触的外导体；
所述内导体结构还包括部分设置于所述外导体中的插针；所述插针的一端与所述内导体单元欧姆接触；
所述弹性结构套设于所述插针上，用于弹性抵接所述内导体单元并与之欧姆接触，并且在所述插针与所述内导体单元欧姆接触时产生一个限制所述插针偏位的限制力。
在一些实施例中，所述外导体呈筒状，所述弹性结构、所述插针与所述外导体共轴。
在一些实施例中，所述插针包括第一针段和一体结合于所述第一针段的第二针段；
所述第二针段部分或者完全地设置在所述外导体中；所述第一针段向所述内导体单元延伸并与之欧姆接触，且所述第一针段的直径小于所述二针段的直径。
在一些实施例中，所述弹性结构包括弹簧件，所述弹簧件套设于所述第一针段上，且其轴向长度大于所述第一针段的轴向长度。
在一些实施例中，所述弹簧件的内径等于或者略大于所述第一针段的直径。
在一些实施例中，所述弹簧件的表面镀覆有第二导电涂层。
在一些实施例中，所述第二导电涂层为金涂层或者银涂层。
在一些实施例中，所述内导体单元上设有供所述第一针段插入的第二凹槽；所述弹簧件弹性抵接于所述内导体单元在所述第二凹槽槽口周边的壁面。
在一些实施例中，所述外导体单元的外周壁面上设有一个径向贯穿的馈入孔；所述微波馈入单元沿垂直于所述外导体单元轴向的方向插入至所述馈入孔中；
所述第二凹槽与所述馈入孔相对。
在一些实施例中，所述外导体单元呈筒状，所述弹性结构沿垂直于所述外导体单元轴向的方向延伸。
在一些实施例中，所述内导体单元包括导体柱，所述导体柱包括一个固定端和一个自由端；所述固定端连接于所述封闭端的端壁上；所述自由端向所述开口端延伸；
所述弹性结构的末端与所述导体柱弹性欧姆接触。
在一些实施例中，所述外导体单元的外周壁面上设有一个径向贯穿的馈入孔；所述微波馈入单元沿垂直于所述外导体单元轴向的方向插入至所述馈入孔中；
所述导体柱的外周壁面上设有一个与所述馈入孔相对的第三凹槽；
所述弹性结构的末端插入所述第三凹槽并弹性抵接所述第三凹槽的内壁面，或者所述弹性结构的末端弹性抵接于所述导体柱在所述第三凹槽槽口周边的壁面。
在一些实施例中，所述导体柱共轴地设置于所述外导体单元中。
在一些实施例中，所述内导体单元还包括导体盘；所述导体盘结合于所述自由端上，且所述导体盘的直径大于所述导体柱的直径，并与所述外导体单元的内壁面之间设有间距。
在一些实施例中，所述内导体单元还包括呈纵长形的探针装置；所述探针装置的一端插入至所述导体盘上，并与所述导体盘欧姆接触，所述探针装置的另一端向所述开口端延伸。
在一些实施例中，所述微波加热组件还包括安装在所述开口端的收容座；所述收容座具有一个轴向延伸、用于收容气溶胶生成制品的收容腔；所述收容腔设置在所述腔体中。
在一些实施例中，所述收容座还包括若干个纵长的定位筋和若干纵长的支撑筋；这些定位筋间隔地设置于所述收容腔的壁面周向上；这些支撑筋呈放射状分布于所述收容腔的底面上；至少部分相邻定位筋之间形成有纵向延伸的第一进气通道，至少部分相邻支撑筋形成有放射状延伸的第二进气通道，这些第二进气通道分别与这些第一进气通道相连通。
本发明还构造一种气溶胶产生装置，包括微波发生装置还包括上述的微波加热组件；所述微波加热组件与所述微波发生装置连接并与之欧姆接触。
实施本发明具有以下有益效果：通过将微波馈入单元的内导体结构与内导体单元弹性欧姆接触，可以有效降低热胀冷缩等原因带来的接触不良的问题。
 附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1是本发明实施例1中的微波加热组件的外部结构示意图；
图2是图1所示微波加热组件的纵向剖面结构示意图；
图3是本发明实施例2中的微波加热组件的纵向剖面结构示意图；
图4是本发明实施例3中的微波加热组件的纵向剖面结构示意图；
图5是本发明实施例3中的微波馈入单元的内导体结构的结构示意图；
图6是本发明根据实施例1的气溶胶产生装置测得的散射参数图；
图7是本发明根据实施例2的气溶胶产生装置测得的散射参数图；
图8是本发明根据实施例3的气溶胶产生装置测得的散射参数图。
附图标记：微波加热组件1；气溶胶生成制品2；外导体单元11；内导体单元12；收容座13；微波馈入单元14；封闭端111；开口端112；导体侧壁113；导体端壁114；馈入孔115；导体柱121；导体盘122；探针装置123；凹槽1211；收容部131；固定部132；定位筋133；收容腔1311；通孔1321；外导体141；内导体结构142；介质层143；弹簧顶针结构144；针头1441；针管1442；
第二微波馈入单元14a；第二外导体141a；第二内导体结构142a；第二介质层143a；双头型弹簧顶针结构144a；第一针头1441a；第二针头1441c；第二针筒1442a；
第三微波馈入单元14b；第三外导体141b；第三内导体结构142b；第三介质层143b；第一针段1441b；第二针段1442b；弹簧件1443b。
 具体实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图详细说明本发明的具体实施方式。以下描述中，需要理解的是，“前”、“后”、“上”、“下”、“左”、“右”、“纵”、“横”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“头”、“尾”等指示的方位或位置关系为基于附图所示的方位或位置关系、以特定的方位构造和操作，仅是为了便于描述本技术方案，而不是指示所指的装置或元件必须具有特定的方位，因此不能理解为对本发明的限制。
还需要说明的是，除非另有明确的规定和限定，“安装”、“相连”、“连接”、“固定”、“设置”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。当一个元件被称为在另一元件“上”或“下”时，该元件能够“直接地”或“间接地”位于另一元件之上，或者也可能存在一个或更多个居间元件。术语“第一”、“第二”、“第三”等仅是为了便于描述本技术方案，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量，由此，限定有“第一”、“第二”、“第三”等的特征可以明示或者隐含地包括一个或者更多个该特征。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
以下描述中，为了说明而不是为了限定，提出了诸如特定系统结构、技术之类的具体细节，以便透彻理解本发明实施例。然而，本领域的技术人员应当清楚，在没有这些具体细节的其它实施例中也可以实现本发明。在其它情况中，省略对众所周知的系统、装置、电路以及方法的详细说明，以免不必要的细节妨碍本发明的描述。
本发明构造了一种气溶胶产生装置，该气溶胶产生装置可利用微波加热气溶胶生成制品2，以雾化产生气溶胶，从而供使用者吸食或吸入。该气溶胶生成制品2为诸如经过处理的植物叶类制品等固态的气溶胶生成制品2。可以理解地，该气溶胶生成制品2还可以为液态气溶胶生成制品2。
参阅图1，该气溶胶产生装置在实施例1中可包括微波发生装置（未图示）和微波加热组件1。微波发生装置可产生微波；微波加热组件1通过与该微波发生装置连接以接入微波，在自身腔体内形成一个微波场，该微波场可作用于气溶胶生成制品2，对其实现微波加热。
如图1和图2所示，该微波加热组件1整体形状大致呈圆柱状，当然，微波加热组件1并不局限于圆柱状，其也可呈方柱、椭圆柱状等其他形状。在实施例1中，微波加热组件1可包括外导体单元11、内导体单元12、收容座13以及微波馈入单元14。该外导体单元11呈筒状，其具有一个封闭端111和与该封闭端111相对的开口端112，用于界定出一个半封闭式的腔体，该腔体呈直圆柱状。内导体单元12用于调节腔体中的谐振频率及微波分布，其设置在外导体单元11的腔体中，且一端连接于外导体单元11的封闭端111，与封闭端111的端壁欧姆接触，形成该微波加热组件1的短路端；该内导体单元12的另一端朝外导体单元11的开口端112延伸，并不与外导体单元11接触，形成该微波加热组件1的开路端。收容座13固定地或可拆卸地安装于外导体单元11的开口端112处，其用于装载气溶胶生成制品2，使得当气溶胶生成制品2插设于收容座13时可处于微波场主要形成的区域。微波馈入单元14用于将微波发生装置产生的微波馈入至腔体内（馈入的方式可包括电馈入方式或磁馈入方式；优选电馈入方式），该微波馈入单元14可拆卸地安装于外导体单元11的外周壁，同时伸入至腔体内与内导体单元12弹性欧姆接触。
优选地，内导体单元12、外导体单元11以及收容座13的轴线相互重合。
如图2所示，外导体单元11可包括导电的导体侧壁113和导体端壁114。其中，导体侧壁113可呈圆筒状，包括相对的两端。导体端壁114封闭于该导体侧壁113的第一端上，形成上述的封闭端111；导体侧壁113的第二端为开口结构，形成上述的开口端112。此外，该导体侧壁113靠近导体端壁114处设有一个径向贯通的馈入孔115，该馈入孔115用于供微波馈入单元14插设至外导体单元11内。该馈入孔115的孔径与微波馈入单元14的外导体141的外径相适配。
外导体单元11可采用可导电的金属材料一体制成，其材质可包括铝、铜、金、银、不锈钢中的至少一种；优选铝合金或铜。可以理解地，外导体单元11并不局限于采用导电材料一体制成，其也可以通过在非导电筒体的内壁面镀覆第三导电涂层的方式实现。制成第三导电涂层的材料可包括金、银、铜、铝、导电金属氧化物或者导电高分子；其中导电金属氧化物可包括ITO、AZO、AGZO和FTO材料。优选第一导电涂层为银涂层或者金涂层。
如图2所示，内导体单元12可包括导体柱121、设于导体柱121上方的导体盘122以及嵌置于导体盘122中的探针装置123。优选地，导体柱121、导体盘122和探针装置123的轴线相互重合。
在该实施例中，导体柱121起到微波传导作用，其可呈圆柱状，导体柱121远离外导体单元11的开口端112的一端（底端）共轴地连接在外导体单元11的导体端壁114上，其靠近开口端112的一端（顶端）向外导体单元11的开口端112延伸。导体柱121的直径小于外导体单元11的内径。可以理解地，导体柱121并不局限于呈圆柱状，其也可以呈方柱状、椭圆柱状、阶梯柱状、不规则柱状等其他形状。
导体柱121可采用导电的金属材料一体制成，优选铝合金或铜。可以理解地，导体柱121并不局限于采用导电材料一体制成，其也可以通过在非导电体的外表面镀覆第四导电涂层的方式实现。第四导电涂层优选镀覆银涂层或者金涂层。
如图2所示，在导体柱121与外导体单元11的馈入孔115相对的外周壁上还设有一个凹槽1211，该凹槽1211一方面用于供微波馈入单元14的一端插设，实现微波的传导；另一方面可以降低微波馈入单元14与导体柱121之间接触不良的风险。该凹槽1211整体呈直圆柱形通道，其沿导体柱121的径向向导体柱121的内部凹陷成形。当然，凹槽1211的截面（平行于导体柱121轴线的截面）形状除了呈圆形，还可以呈方形、椭圆形或者其他多边形，在这不做具体限定。
导体盘122用于微波传导，还可以增加自身电感和电容，以及降低谐振频率，从而利于腔体尺寸的进一步变小。该导体盘122可呈圆盘状，其直径大于导体柱121的直径，且设置在导体柱121的顶端上。该导体盘122可一体结合于导体柱121上，也可以与导体柱121欧姆接触。可以理解地，该导体盘122并非本微波加热组件1的必要部件，其作为一个优选方案应用于本实施例中；在没有导体盘122时，依靠导体柱121和探针装置123也可实现微波加热。
探针装置123用于调节微波场分布和微波馈入频率，其作为独立结构可从导体盘122的顶端抽离/插入于导体盘122内，且与导体盘122内形成欧姆接触。
在实施例1中，探针装置123可包括纵长的探针；探针的下端从导体盘122的顶端插入，共轴地嵌置于导体盘122中，与导体盘122形成良好的欧姆接触；探针的上端向上延伸至收容座13中。可以理解地，当有微波馈入微波加热组件1时，在探针装置123伸入收容座13的部分结构周边会形成强微波场。
可选地，探针上端端部的形状可包括平面、球形、椭球形、圆锥形或者圆台形中的一种；优选圆台形，因为该可起到增强局部场强的作用，继而加快气溶胶生成介质的雾化速度。
该探针装置123还可包括设于探针内的测温元件（未图示），该测温元件用于监测插入收容座13的气溶胶生成制品2的内部温度，以方便控制温度。可以理解地，当不需要测温时，探针可以是实心结构；而当需要测温时，探针可以是中空探针。
探针可采用导电的金属材料一体制成，优选不锈钢、铝合金或铜。可以理解地，探针并不局限于采用导电材料一体制成，其也可以通过在非导电体的外表面镀覆第五导电涂层的方式实现。第五导电涂层可包括金、银、铜、铝、导电金属氧化物或者导电高分子；其中，导电金属氧化物包括ITO、AZO、AGZO、FTO材料。第五导电涂层优选镀覆银涂层或者金涂层。
如图2所示，在实施例1中，收容座13可包括收容部131以及与该收容部131一体连接的固定部132。收容部131用于收容气溶胶生成制品2；固定部132用于轴向封堵于外导体单元11的开口端112上，并让收容部131伸入到腔体内，使得探针装置123穿设于收容部131中。
该收容部131可呈圆筒状，且其外径可小于外导体单元11的内径。收容部131包括一个轴向的、用于收容气溶胶生成制品2的收容腔1311。该固定部132可呈环形，与收容部131共轴地连接一起。固定部132可共轴地封堵于外导体单元11的开口端112处，以将收容部131共轴地设置于腔体中。其中，固定部132包括一个将收容腔1311与外部环境相连通的轴向的通孔1321，气溶胶生成制品2可以经由该通孔1321插入收容腔1311中。
如图2所示，收容座13还包括若干个纵长的定位筋133。这些定位筋133间隔均匀地设置于收容腔1311和/或通孔1321的壁面周向上。每一定位筋133均沿着平行于收容座13的轴线的方向延伸。该些定位筋133在一个方面可用于夹紧插入收容腔1311和/或通孔1321的气溶胶生成制品2，在另一个方面每相邻两定位筋133之间均形成一个纵向延伸的第一进气通道，以方便环境空气被吸入到气溶胶生成制品2的底部，再进入气溶胶生成制品2中带走被微波加热产生的气溶胶。
收容座13还可包括若干纵长的支撑筋（未图示）；这些支撑筋均匀间隔地呈放射状分布于收容腔1311的底面上。可以理解地，支撑筋一个方面用于支撑气溶胶生成制品2，另一个方向形成若干放射状第二进气通道。这些第二进气通道分别与上述那些第一进气通道相连通，以方便环境空气被吸入到气溶胶生成制品2的底部，再进入气溶胶生成制品2中带走被微波加热产生的气溶胶。
收容座13可采用高分子材料制成（如聚四氟乙烯（PTFE）、聚醚醚酮（PEEK）、ppsu、pc、ABS、pp等），也可以是陶瓷材料制成（氧化铝、氧化锆等），收容座13还可以是金属或者玻璃材质。当然，在工程应用中，优选采用高分子材料制成（成本低、导热系数低）。收容座13还可以使用PI、PEEK、PTFE等低微波损耗耐高温无害材料制成。
如图2所示，微波馈入单元14可从位于外导体单元11周侧的馈入孔115插入，并装于外导体单元11上。在实施例1中，该微波馈入单元14为同轴结构，其包括外导体141、设于外导体141内的内导体结构142以及介于内导体结构142和外导体141之间的介质层143。
在该实施例中，外导体141为两端为开口结构的直圆筒结构；在微波馈入单元14装于外导体单元11时，外导体141的侧壁与位于外导体单元11上的馈入孔115的内壁面欧姆接触。
内导体结构142可包括可导电的第一弹性结构，该第一弹性结构的一末端通过与内导体单元12弹性欧姆接触，以确保内导体结构142与内导体单元12之间电导通性能和稳定性。在该实施例中，弹性结构为可导电的弹簧顶针结构144；弹簧顶针结构144弹性抵接于内导体单元12。优选地，该弹簧顶针结构144为单头弹簧顶针结构，其针筒1442部分或者完全地设置在外导体141中；弹簧顶针结构144的针头1441外露于外导体141外，用于插入至导体柱121上的凹槽1211中，并借由弹簧顶针结构的弹性件抵紧凹槽1211的内壁面。该弹簧顶针结构144的针头1441的直径与凹槽1211的直径相适配。
可选地，在微波馈入单元14接入微波时，微波发生装置可通过连接于弹簧顶针结构144的针管1442，以完成微波的传导。
介质层143为采用PTFE材料等绝缘材料制成的绝缘层，其可紧密地粘接在弹簧顶针结构144的针筒1442上。
弹簧顶针结构144可采用导电的金属材料一体制成，优选铝合金或铜。可以理解地，弹簧顶针结构144并不局限于采用导电材料一体制成，其也可以通过在非导电体的外表面镀覆第一导电涂层的方式实现。第一导电涂层优选镀覆银涂层或者金涂层；更优选为金涂层。一并再参阅图3所示，图3示出了本发明实施例2中的微波加热组件1，其与上述实施例1中的微波加热组件1的区别在于：用第二微波馈入单元14a替代了上述实施例1中微波加热组件1的微波馈入单元14。
在该实施例中，第二微波馈入单元14亦为同轴结构，其包括第二外导体141a、设于第二外导体141a内的第二内导体结构142a以及介于第二内导体结构142a和第二外导体141a之间的第二介质层143a。
第二外导体141a为两端为开口结构的直圆筒结构；在第二微波馈入单元14a装于外导体单元11时，第二外导体141a的侧壁与位于外导体单元11上的馈入孔115的内壁面欧姆接触。
第二内导体结构142可包括可导电的第二弹性结构，该第二弹性结构的一末端通过与内导体单元12弹性欧姆接触，以确保第二内导体结构142与内导体单元12之间电导通性能和稳定性。在该实施例中，该第二弹性结构为可导电的双头型弹簧顶针结构144a。该双头型弹簧顶针结构144a的第二针筒1442a部分或者完全地设置在第二外导体141a中；双头型弹簧顶针结构144a的第一针头1441a和第二针头1441c分别外露于外导体141的两端外；其中，第一针头1441a用于插入至导体柱121上的凹槽1211中，并与凹槽1211的内壁面紧密接触，以形成良好的欧姆接触。该第一针头1441a的直径与凹槽1211的直径相适配。而该第二针头1441c用于与微波发生装置连接，以接入微波。
第二介质层143a为采用PTFE材料等绝缘材料制成的绝缘层，其可紧密地粘接在弹簧顶针结构144的针筒上。
双头型弹簧顶针结构144a可采用导电的金属材料一体制成，优选铝合金或铜。也可以在非导电体的外表面镀覆银涂层或者金涂层；优选为金涂层。
一并再参阅图4和图5所示，如图示出了本发明实施例3中的微波加热组件1，其与上述实施例1中的微波加热组件1的区别在于：用第三微波馈入单元14b替代了上述实施例1中微波加热组件1的微波馈入单元14。
在该实施例中，第三微波馈入单元14b亦为同轴结构，其包括第三外导体141b、设于第三外导体141b内的第三内导体结构142b以及介于第三内导体结构142b和第三外导体141b之间的第三介质层143b。
第三外导体141b为两端为开口结构的直圆筒结构；在第三微波馈入单元14b装于外导体单元11时，第三外导体141b的侧壁与位于外导体单元11上的馈入孔115的内壁面欧姆接触。
第三内导体结构142b包括可导电的插针以及可导电的第三弹性结构。该插针用于与内导体单元12欧姆接触，而第三弹性结构套设于插针上，可进一步增大第三内导体结构142b与导体柱121的接触面积，同时，第三弹性结构在插针与内导体单元12欧姆接触时可沿插针轴向发生弹性形变，产生一个限制插针偏位以避免与内导体单元12之间接触不良的限制力，从而提高电导通性能和稳定性。弹性结构套设于插针上，用于弹性抵接内导体单元并与之欧姆接触，并且在插针与内导体单元欧姆接触时产生一个限制插针偏位的限制力
在该实施例中，该插针包括第一针段1441b和一体结合于第一针段1441b的第二针段1442b。第一针段1441b呈纵长的圆柱形，用于插入至内导体单元12的凹槽1211，并与凹槽1211的内壁面紧密接触，以形成良好的欧姆接触；该第一针段1441b的直径与凹槽1211的直径相适配。第二针段1442b呈纵长的圆柱形，其部分或者完全地设置在第三外导体141b中，且其直径大于第一针段1441b的直径。
第三弹性结构为呈圆筒形的弹簧件1443b，套设在第一针段1441b的外周，可沿第一针段1441b的轴向发生弹性形变。同时，如图5所示，该弹簧件1443b的长度大于第一针段1441b的长度。在第一针段1441b插入凹槽1211时，弹簧件1443b靠近第二针段1442b的一端抵接于第二针段1442b（当然，该靠近第二针段1442b的一端也可以直接固定在第一针段1441b上），弹簧件1443b远离第二针段1442b的一端抵接弹性抵接于导体柱121在凹槽1211槽口周边的壁面上，使得弹簧件1443b产生抵紧第二针段1442b和导体柱121的作用力，从而实现将第三内导体结构142b稳固地与导体柱121欧姆接触的目的。
可选地，该插针和/或弹簧件1443b可采用导电的金属材料一体制成，优选铝合金或铜。可以理解地，插针和/或弹簧顶针结构144并不局限于采用导电材料一体制成，其也可以通过在非导电体的外表面镀覆第二导电涂层的方式实现。第二导电涂层优选镀覆银涂层或者金涂层；更优选为金涂层。
可以理解地，除了将弹性结构作为内导体结构142与刚性的内导体单元12弹性欧姆接触，还可以在内导体单元12上设置弹性结构与刚性的内导体结构142之间进行弹性欧姆接触。
以下结合实验数据，参考图6至图8所示，具体证明本发明改进后的微波馈入单元14所起到的作用：
在实验1中，采用实施例1的微波加热组件1进行测试。经测试后可以得到，微波馈入效果＞90%，谐振频率为2.435GHZ。同时，图6示出了根据实施例1的微波加热组件1测得的散射参数图，从图6可以看到，散射参数S11能够达到-11.8dB。
在实验2中，采用实施例2的微波加热组件1进行测试。经测试后可以得到，微波馈入效果＞90%，谐振频率为2.422GHZ。同时，图7示出了根据实施例2的微波加热组件1测得的散射参数图，从图7可以看到，散射参数S11能够达到-10.8dB。
在实验3中，采用实施例3的微波加热组件1进行测试。经测试后可以得到，微波馈入效果＞90%，谐振频率为2.422GHZ。同时，图8示出了根据实施例3的微波加热组件1测得的散射参数图，从图8可以看到，散射参数S11能够达到-19.0dB。
可以理解的，以上实施例仅表达了本发明的优选实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制；应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，可以对上述技术特点进行自由组合，还可以做出若干变形和改进，这些都属于本发明的保护范围；因此，凡跟本发明权利要求范围所做的等同变换与修饰，均应属于本发明权利要求的涵盖范围。

Claims (28)

  1. 一种微波加热组件，其特征在于，包括：
    外导体单元，呈筒状，其包括相对的一个开口端和一个封闭端，以及位于所述开口端与所述封闭端之间的腔体；
    内导体单元，设置于所述腔体内；以及
    微波馈入单元，包括内导体结构，所述内导体结构与所述内导体单元弹性欧姆接触。
  2. 根据权利要求1所述的微波加热组件，其特征在于，所述内导体结构包括可导电的弹性结构，所述弹性结构的末端与所述内导体单元弹性欧姆接触。
  3. 根据权利要求2所述的微波加热组件，其特征在于，所述微波馈入单元还包括与所述外导体单元欧姆接触的外导体；
    所述弹性结构包括部分设置于所述外导体内的弹性顶针结构；所述弹性顶针结构的针头外露于所述外导体外，且所述弹性顶针的弹性件推动所述针头抵紧所述内导体单元。
  4. 根据权利要求3所述的微波加热组件，其特征在于，所述微波馈入单元还包括介于所述外导体和所述内导体结构之间的介质层；所述介质层粘接于所述弹性顶针结构的针筒外周。
  5. 根据权利要求3所述的微波加热组件，其特征在于，所述内导体单元上设有供所述弹性顶针结构的针头插入的第一凹槽。
  6. 根据权利要求5所述的微波加热组件，其特征在于，所述外导体单元的外周壁面上设有一个径向贯穿的馈入孔；所述微波馈入单元沿垂直于所述外导体单元轴向的方向插入至所述馈入孔中；
    所述第一凹槽与所述馈入孔相对。
  7. 根据权利要求3所述的微波加热组件，其特征在于，所述弹性顶针结构包括呈纵长形的单头弹簧顶针结构或双头弹性顶针结构。
  8. 根据权利要求3所述的微波加热组件，其特征在于，所述外导体呈筒状，所述弹性顶针结构共轴地设置在所述外导体中。
  9. 根据权利要求3所述的微波加热组件，其特征在于，所述弹性顶针结构的表面镀覆有第一导电涂层。
  10. 根据权利要求9所述的微波加热组件，其特征在于，所述第一导电涂层为金涂层或者银涂层。
  11. 根据权利要求2所述的微波加热组件，其特征在于，所述微波馈入单元还包括与所述外导体单元欧姆接触的外导体；
    所述内导体结构还包括部分设置于所述外导体中的插针；所述插针的一端与所述内导体单元欧姆接触；
    所述弹性结构套设于所述插针上，用于弹性抵接所述内导体单元并与之欧姆接触，并且在所述插针与所述内导体单元欧姆接触时产生一个限制所述插针偏位的限制力。
  12. 根据权利要求11所述的微波加热组件，其特征在于，所述外导体呈筒状，所述弹性结构、所述插针与所述外导体共轴。
  13. 根据权利要求11所述的微波加热组件，其特征在于，所述插针包括第一针段和一体结合于所述第一针段的第二针段；
    所述第二针段部分或者完全地设置在所述外导体中；所述第一针段向所述内导体单元延伸并与之欧姆接触，且所述第一针段的直径小于所述二针段的直径。
  14. 根据权利要求13所述的微波加热组件，其特征在于，所述弹性结构包括弹簧件，所述弹簧件套设于所述第一针段上，且其轴向长度大于所述第一针段的轴向长度。
  15. 根据权利要求14所述的微波加热组件，其特征在于，所述弹簧件的内径等于或者略大于所述第一针段的直径。
  16. 根据权利要求14所述的微波加热组件，其特征在于，所述弹簧件的表面镀覆有第二导电涂层。
  17. 根据权利要求16所述的微波加热组件，其特征在于，所述第二导电涂层为金涂层或者银涂层。
  18. 根据权利要求14所述的微波加热组件，其特征在于，所述内导体单元上设有供所述第一针段插入的第二凹槽；所述弹簧件弹性抵接于所述内导体单元在所述第二凹槽槽口周边的壁面。
  19. 根据权利要求18所述的微波加热组件，其特征在于，所述外导体单元的外周壁面上设有一个径向贯穿的馈入孔；所述微波馈入单元沿垂直于所述外导体单元轴向的方向插入至所述馈入孔中；
    所述第二凹槽与所述馈入孔相对。
  20. 根据权利要求2所述的微波加热组件，其特征在于，所述外导体单元呈筒状，所述弹性结构沿垂直于所述外导体单元轴向的方向延伸。
  21. 根据权利要求2所述的微波加热组件，其特征在于，所述内导体单元包括导体柱，所述导体柱包括一个固定端和一个自由端；所述固定端连接于所述封闭端的端壁上；所述自由端向所述开口端延伸；
    所述弹性结构的末端与所述导体柱弹性欧姆接触。
  22. 根据权利要求21所述的微波加热组件，其特征在于，所述外导体单元的外周壁面上设有一个径向贯穿的馈入孔；所述微波馈入单元沿垂直于所述外导体单元轴向的方向插入至所述馈入孔中；
    所述导体柱的外周壁面上设有一个与所述馈入孔相对的第三凹槽；
    所述弹性结构的末端插入所述第三凹槽并弹性抵接所述第三凹槽的内壁面，或者所述弹性结构的末端弹性抵接于所述导体柱在所述第三凹槽槽口周边的壁面。
  23. 根据权利要求21所述的微波加热组件，其特征在于，所述导体柱共轴地设置于所述外导体单元中。
  24. 根据权利要求23所述的微波加热组件，其特征在于，所述内导体单元还包括导体盘；所述导体盘结合于所述自由端上，且所述导体盘的直径大于所述导体柱的直径，并与所述外导体单元的内壁面之间具有间距。
  25. 根据权利要求24所述的微波加热组件，其特征在于，所述内导体单元还包括呈纵长形的探针装置；所述探针装置的一端插入至所述导体盘上，并与所述导体盘欧姆接触，所述探针装置的另一端向所述开口端延伸。
  26. 根据权利要求1所述的微波加热组件，其特征在于，所述微波加热组件还包括安装在所述开口端的收容座；所述收容座具有一个轴向延伸、用于收容气溶胶生成制品的收容腔；所述收容腔设置在所述腔体中。
  27. 根据权利要求26所述的微波加热组件，其特征在于，所述收容座还包括若干个纵长的定位筋和若干纵长的支撑筋；这些定位筋间隔地设置于所述收容腔的壁面周向上；这些支撑筋呈放射状分布于所述收容腔的底面上；至少部分相邻定位筋之间形成有纵向延伸的第一进气通道，至少部分相邻支撑筋形成有放射状延伸的第二进气通道，这些第二进气通道分别与这些第一进气通道相连通。
  28. 一种气溶胶产生装置，包括微波发生装置，其特征在于，还包括权利要求1至权利要求27任一项所述的微波加热组件；所述微波加热组件与所述微波发生装置连接并与之欧姆接触。
PCT/CN2023/105254 2022-11-02 2023-06-30 气溶胶产生装置及其微波加热组件 WO2024093332A1 (zh)

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