WO2024113327A1 - Dispositif de génération d'aérosol et ensemble de chauffage par micro-ondes associé - Google Patents

Dispositif de génération d'aérosol et ensemble de chauffage par micro-ondes associé Download PDF

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Publication number
WO2024113327A1
WO2024113327A1 PCT/CN2022/136035 CN2022136035W WO2024113327A1 WO 2024113327 A1 WO2024113327 A1 WO 2024113327A1 CN 2022136035 W CN2022136035 W CN 2022136035W WO 2024113327 A1 WO2024113327 A1 WO 2024113327A1
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WIPO (PCT)
Prior art keywords
cavity section
microwave heating
heating assembly
assembly according
conductor
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PCT/CN2022/136035
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English (en)
Chinese (zh)
Inventor
杜靖
蓝永海
何建波
梁峰
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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Priority to PCT/CN2022/136035 priority Critical patent/WO2024113327A1/fr
Publication of WO2024113327A1 publication Critical patent/WO2024113327A1/fr

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  • the invention relates to the technical field of aerosol generation, and in particular to an aerosol generating device and a microwave heating component thereof.
  • an aerosol generating device forms a microwave interaction zone in a microwave heating component, and transmits microwave energy to an aerosol generating product.
  • the microwave energy distribution field determines the microwave heating effect.
  • the microwave field weakens from top to bottom along the probe structure. Therefore, during the microwave heating process, the bottom heating (carbonization) effect of the aerosol generating product is poor, making it difficult to increase the carbonization rate of the aerosol generating product.
  • the technical problem to be solved by the present invention is to provide an improved aerosol generating device and a microwave heating component thereof.
  • the technical solution adopted by the present invention to solve the technical problem is: construct a microwave heating component for an aerosol generating device, the microwave heating component comprising:
  • the outer conductor unit is in a cylindrical shape and includes an open end, a closed end, and a cavity between the open end and the closed end;
  • a receiving space disposed in the cavity, for receiving the aerosol generating product
  • the cavity includes a head cavity section, a neck cavity section and a tail cavity section which are connected to each other.
  • the head cavity section is adjacent to the open end, and its average inner diameter is larger than the average inner diameter of the neck cavity section;
  • the tail cavity section is adjacent to the closed end, and its average inner diameter is larger than the average inner diameter of the neck cavity section;
  • the neck cavity section is between the head cavity section and the tail cavity section, and is correspondingly arranged at the lower part of the containing space away from the open end.
  • the neck cavity section is a cylindrical channel with an inner diameter ranging from 7.2 mm to 9.2 mm.
  • the neck cavity section is a truncated cone-shaped channel, and its minimum inner diameter is between 7.2 mm and 9.2 mm.
  • an air intake gap is reserved below the receiving space to prevent the bottom end surface of the aerosol generating article from being completely covered.
  • the head cavity section is a truncated cone-shaped channel.
  • the maximum inner diameter of the head cavity segment is less than or equal to 20 mm.
  • the neck cavity section is connected to the head cavity section in a smooth transition.
  • the neck cavity section is a truncated cone-shaped channel, and the neck cavity section and the head cavity section form a truncated cone-shaped first channel, and the inner diameter of the first channel gradually decreases from the open end to the closed end.
  • the head cavity section is a cylindrical channel.
  • the inner diameter of the head cavity section is less than or equal to 20 mm.
  • the neck cavity section is a cylindrical channel, and the neck cavity section and the head cavity section form a stepped second channel.
  • inner wall surfaces of the head cavity section and the neck cavity section form the receiving space.
  • the tail cavity section is a cylindrical channel.
  • the head cavity segment, the neck cavity segment, and the tail cavity segment are coaxial.
  • the microwave heating assembly further comprises:
  • the inner conductor unit is arranged in the cavity; the inner conductor unit comprises a first fixed end and a first free end, the first fixed end is connected to the closed end, and the first free end extends toward the open end.
  • the inner conductor unit comprises:
  • a conductor column is arranged in the tail cavity section; the conductor column comprises a second fixed end and a second free end, the second fixed end is coaxially connected to the closed end, and the second free end extends toward the open end.
  • the inner conductor unit comprises:
  • a conductor disk is coaxially connected to the second free end, and a diameter of the conductor disk is larger than a diameter of the conductor column and smaller than an inner diameter of the tail cavity section.
  • the inner conductor unit comprises:
  • the probe device is in a longitudinal shape, one end of which is embedded in the conductor disk and the other end of which extends toward the opening end.
  • the microwave heating assembly further comprises:
  • the receiving seat is embedded in the opening end and comprises a receiving portion for defining the receiving space.
  • the receiving portion is cylindrical, and its outer diameter is between 8 mm and 9 mm.
  • the microwave heating assembly further comprises a microwave feeding unit
  • the microwave feeding unit comprises:
  • An inner conductor is disposed in the outer conductor; one end of the inner conductor extends into the cavity and makes ohmic contact with the inner side of the outer conductor unit or the inner conductor unit;
  • the dielectric layer is arranged between the outer conductor and the inner conductor.
  • the inner conductor is in a straight line shape and is in ohmic contact with the inner conductor unit along a direction perpendicular to the axis of the inner conductor unit.
  • the present invention also constructs an aerosol generating device, including a microwave generating device and the above-mentioned microwave heating component, wherein the microwave feeding unit is connected to the microwave generating device.
  • the present invention optimizes the heating effect on the bottom of the aerosol generating product by adjusting the cavity structure of the outer conductor unit of the microwave heating assembly.
  • FIG1 is a schematic diagram of the external structure of a microwave heating assembly in Example 1 of the present invention.
  • FIG2 is a longitudinal structural cross-sectional view of the microwave heating assembly shown in FIG1 ;
  • FIG3 is an electric field distribution diagram obtained by testing the microwave heating assembly according to Example 1 of the present invention.
  • FIG4 is an electric field distribution diagram obtained by testing a microwave heating assembly in the related art
  • FIG5 is a longitudinal structural cross-sectional view of a microwave heating assembly in Example 2 of the present invention.
  • FIG. 6 is a longitudinal structural cross-sectional view of a microwave heating assembly in Embodiment 3 of the present invention.
  • microwave heating assembly 100 aerosol generating product 200; first outer conductor unit 11; inner conductor unit 12; receiving seat 13; microwave feeding unit 14; closed end 111; open end 112; first conductor side wall 113; first conductor end wall 114; first cavity 115; feeding hole 116; first head cavity section 1151; first neck cavity section 1152; first tail cavity section 1153; conductor column 121; conductor disk 122; probe device 123; receiving portion 131; receiving space 1311; air inlet gap 1312; inner end surface 1313; outer conductor 141; inner conductor 142; dielectric layer 143;
  • 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 200 to generate aerosols by atomization, so as to be inhaled or inhaled by the user.
  • the aerosol generating product 200 is a solid aerosol generating product 200 such as a processed plant leaf product. It can be understood that in other embodiments, the aerosol generating product 200 can also be a liquid aerosol generating product 200.
  • the aerosol generating device may include a microwave generating device (not shown) and a microwave heating assembly 100.
  • the microwave generating device may generate microwaves; the microwave heating assembly 100 is connected to the microwave generating device to receive microwaves, thereby forming a microwave field in itself, and the microwave field may act on the aerosol generating product 200 to achieve microwave heating thereof.
  • the microwave heating assembly 100 may include a first outer conductor unit 11 , an inner conductor unit 12 , a receiving seat 13 and a microwave feeding unit 14 .
  • the first outer conductor unit 11 is cylindrical in shape as a whole, and has a closed end 111 and an open end 112 opposite to the closed end 111 , and can define a semi-closed first cavity 115 .
  • the inner conductor unit 12 is used to adjust the resonant frequency and microwave distribution in the first cavity 115.
  • the inner conductor unit 12 is coaxially arranged in the first cavity 115 of the first outer conductor unit 11, and one end (the first fixed end) is connected to the closed end 111 of the first outer conductor unit 11, and is in ohmic contact with the end wall of the closed end 111, forming a short-circuit end of the microwave heating component 100; the other end (the first free end) of the inner conductor unit 12 extends toward the open end 112 of the first outer conductor unit 11, and does not contact the first outer conductor unit 11, forming an open-circuit end of the microwave heating component 100.
  • the receiving seat 13 is detachably mounted on the open end 112 of the first outer conductor unit 11, and includes a receiving portion 131 disposed in the first cavity 115 for defining a receiving space 1311, and the receiving space 1311 can receive the lower structure of the aerosol generating product 200.
  • the lower structure of the aerosol generating product 200 is inserted into the receiving portion 131, it is in the area where the microwave field is mainly formed.
  • the microwave feeding unit 14 is used to feed the microwaves generated by the microwave generating device into the first cavity 115 (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 first outer conductor unit 11 .
  • the first outer conductor unit 11 can be made of a conductive metal material, preferably aluminum alloy or copper. It is understandable that the first outer conductor unit 11 is not limited to being made of a conductive material, and can also be achieved by plating a first conductive coating on the inner wall of a non-conductive cylinder.
  • the material of the first conductive coating may include gold, silver or conductive metal oxide, etc.
  • the first conductive coating is a silver coating or a gold coating.
  • the first outer conductor unit 11 may include a conductive first conductor side wall 113 and a first conductor end wall 114.
  • the first conductor side wall 113 may be cylindrical as a whole, and include two oppositely disposed ends.
  • the first conductor end wall 114 is closed on the first end of the first conductor side wall 113 to form the above-mentioned closed end 111; the second end of the first conductor side wall 113 is an open structure to form the above-mentioned open end 112, and the receiving seat 13 can be installed in the first cavity 115 from the open end 112.
  • the first conductor side wall 113 and the first conductor end wall 114 define a semi-enclosed first cavity 115, which includes a first head cavity section 1151, a first neck cavity section 1152 and a first tail cavity section 1153 connected to each other.
  • the three are arranged longitudinally and coaxially, the first head cavity section 1151 is adjacent to the open end 112, the first tail cavity section 1153 is adjacent to the closed end 111, the first neck cavity section 1152 is located between the first head cavity section 1151 and the first tail cavity section 1153, and its average inner diameter (the average inner diameter refers to the average value of the inner diameter corresponding to each position in the cavity section) is smaller than the average inner diameter of the first head cavity section 1151 and the first tail cavity section 1153, respectively, and the first neck cavity section 1152 is correspondingly located at the lower part of the receiving space 1311 away from the open end 112, so that the inner wall surface of the first neck cavity section 1152 is relatively close to the lower part of the receiving space 1311.
  • one end of the first neck cavity section 1152 away from the opening end 112 is flush with the bottom end of the aerosol generating article 200 arranged in the first cavity 115, and is located at the same height relative to the first cavity 115.
  • the inner wall surface of the first neck cavity section 1152 is relatively close to the lower part of the receiving space 1311, so that when the aerosol generating product 200 is inserted into the receiving space 1311, the inner wall surface of the first neck cavity section 1152 is as close as possible to the lower structure of the aerosol generating product 200.
  • the energy field distribution in the first cavity 115 is adjusted, the strong electric field area around the lower structure of the aerosol generating product 200 is expanded, the heating effect on the lower structure of the aerosol generating product 200 is improved, and the problem of insufficient carbonization of the lower part of the aerosol generating product 200 is improved, thereby increasing the total smoke volume of the entire aerosol generating product 200 heating process (the upper part, middle part and lower part of the aerosol generating product 200 are all effectively carbonized).
  • the first head cavity section 1151 is a truncated cone-shaped channel, and its inner diameter gradually decreases from the opening end 112 to the first neck cavity section 1152.
  • the first neck cavity section 1152 is a truncated cone-shaped channel, and its inner diameter gradually decreases from the first head cavity section 1151 to the first tail cavity section 1153.
  • the first head cavity section 1151 and the first neck cavity section 1152 are smoothly connected, and the minimum inner diameter of the first head cavity section 1151 is equal to the maximum inner diameter of the first neck cavity section 1152.
  • the first head cavity section 1151 and the first neck cavity section 1152 form a first truncated cone-shaped channel, and the inner diameter of the first channel gradually decreases from the opening end 112 to the first tail cavity section 1153.
  • the first tail cavity section 1153 is a cylindrical channel, and its inner diameter is larger than the minimum inner diameter of the first neck cavity section 1152.
  • the first conductor side wall 113 is provided with a radially penetrating feeding hole 116 near the first conductor end wall 114, and the feeding hole 116 allows the microwave feeding device 2 to be inserted into the first outer conductor unit 11.
  • the aperture of the feeding hole 116 is adapted to the outer diameter of the outer conductor of the microwave feeding device 2.
  • the inner conductor unit 12 in Embodiment 1 may include a conductor post 121, a conductor disk 122 disposed above the conductor post 121, and a probe device 123 with one end embedded in the conductor disk 122.
  • the axes of the conductor post 121, the conductor disk 122, the probe device 123 and the first outer conductor unit 11 coincide with each other.
  • the conductor post 121 may be cylindrical, including an opposite second fixed end (bottom end) and a second free end (top end), the second fixed end being coaxially fixed on the first conductor end wall 114 of the first outer conductor unit 11, and the second free end extending toward the open end 112 of the first outer conductor unit 11.
  • the conductor post 121 is located in the first tail cavity section 1153, and its diameter is smaller than the inner diameter of the first tail cavity section 1153. It can be understood that the conductor post 121 is not limited to being cylindrical, and it may also be in other shapes such as square column, elliptical column, stepped column, irregular column, etc.
  • the conductor post 121 can be made of a conductive metal material, preferably aluminum alloy or copper. It is understandable that the conductor post 121 is not limited to being made of a conductive material, and can also be achieved 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.
  • 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 in the size of the first cavity 115.
  • the conductor disc 122 is in the shape of a disc and is connected to the second free end of the conductor post 121.
  • the connection method can be that the conductor disc 122 is integrally combined with the conductor post 121, or it can be welded to the conductor post 121 and ohmically contacted with the conductor post 121.
  • the conductor disc 122 is located in the first tail cavity section 1153, and its diameter is smaller than the inner diameter of the first tail cavity section 1153, and larger than the diameter of the conductor post 121.
  • the conductor plate 122 can be made of a conductive metal material, preferably aluminum alloy or copper. It is understandable that the conductor plate 122 is not limited to being made of a conductive material, and can also be achieved by plating a third conductive coating on the outer surface of a non-conductive body. The third conductive coating is preferably plated with a silver coating or a gold coating.
  • the probe device 123 may include a probe for adjusting the microwave field distribution and the microwave feeding frequency.
  • the probe is in a longitudinal shape, and its lower end can be fixedly or detachably embedded in the conductor disk 122 to form a good ohmic contact with the conductor disk 122; the upper end of the probe extends upward and extends into the receiving portion 131.
  • the aerosol generating product 200 when it extends into the receiving seat 13, it can be sleeved on the outer periphery of the upper end of the probe; at this time, when microwaves are fed into the microwave heating assembly 100, a microwave field will be formed around the part of the structure where the probe extends into the receiving seat 13, thereby heating the aerosol generating product 200 with microwaves.
  • the shape of the upper end of the probe may include a plane, a sphere, an ellipsoid, a cone or a truncated cone; a truncated cone (not shown) is preferred because it can enhance the local field strength and thereby accelerate the atomization speed of the aerosol generating product 200.
  • 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 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.
  • 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 inserted into the receiving seat 13 to facilitate temperature control. It can be understood that when temperature measurement is not required, the probe can be a solid structure; and when temperature measurement is required, the probe can be a hollow probe.
  • the receiving seat 13 may include a receiving portion 131 and a fixing portion (not shown) integrally connected to the receiving portion 131 .
  • the receiving portion 131 is used to receive the aerosol generating product 200 ;
  • the fixing portion is used to axially block the open end 112 of the first outer conductor unit 11 and allow the receiving portion 131 to extend into the first cavity 115 .
  • the receiving portion 131 may be cylindrical, and its outer diameter may be smaller than the inner diameter of the first head cavity section 1151 and the cavity section.
  • the outer diameter of the receiving portion 131 is between 8 mm and 9 mm, preferably 9 mm.
  • the receiving portion 131 defines an axial receiving space 1311 for receiving the aerosol generating product 200.
  • the fixing portion may be annular and coaxially connected to the receiving portion 131.
  • the fixing portion may be coaxially sealed at the open end 112 of the first outer conductor unit 11 to coaxially arrange the receiving portion 131 in the first cavity 115.
  • the fixing portion includes an axial through hole that connects the receiving cavity with the external environment, and the aerosol generating product 200 can be inserted into the receiving cavity through the through hole.
  • the receiving seat 13 further includes a plurality of longitudinal positioning ribs (not shown). These positioning ribs are evenly spaced and arranged on the circumference of the wall surface of the receiving cavity and/or the through hole. Each positioning rib extends in a direction parallel to the axis of the receiving seat 13. In one aspect, these positioning ribs can be used to clamp the aerosol generating product 200 inserted into the receiving cavity and/or the through hole. In another aspect, a longitudinally extending air inlet channel is formed between each two adjacent positioning ribs to facilitate the ambient air to be sucked into the bottom of the aerosol generating product 200, and then enter the aerosol generating product 200 to take away the aerosol generated by microwave heating.
  • an air inlet gap 1312 may be left below the receiving space 1311 to prevent the bottom end surface of the aerosol generating product 200 from being completely covered, resulting in blocked airflow.
  • the receiving portion 131 includes an inner end surface 1313 that abuts against the bottom end surface of the aerosol generating product 200, and the inner end surface 1313 is provided with support ribs (not shown) that are evenly spaced and radially distributed.
  • the inner end surface 1313 supports the aerosol generating product by means of the support ribs, and on the other hand, the support ribs form a plurality of radial second air inlet channels (i.e., the air inlet gap 1312). These second air inlet channels are respectively connected to these first air inlet channels to facilitate the ambient air to be inhaled into the bottom of the aerosol generating product, and then enter the aerosol generating product to take away the aerosol generated by microwave heating.
  • the receiving seat 13 can be made of a high temperature resistant material with low dielectric loss, and the material can be a polymer material (such as polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), etc.), or a ceramic material (such as glass, quartz glass, alumina, zirconia, etc.).
  • a polymer material such as polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), etc.
  • PEEK polyetheretherketone
  • ceramic material such as glass, quartz glass, alumina, zirconia, etc.
  • the microwave feeding device 2 may be a coaxial connector, which is inserted from a feeding hole 116 located on the peripheral side of the first outer conductor unit 11 and mounted on the first outer conductor unit 11.
  • the microwave feeding device 2 includes an outer conductor 141, an inner conductor 142 disposed inside the outer conductor 141, and a dielectric layer 23 between the inner conductor 142 and the outer conductor 141.
  • the outer conductor 141 is a cylindrical structure with openings at both ends. When the microwave feeding device 2 is mounted on the first outer conductor unit 11 , the side wall of the outer conductor 141 is in ohmic contact with the inner wall of the feeding hole 116 on the first outer conductor unit 11 .
  • the inner conductor 142 is a straight needle structure, one end of which is a connection end, located inside the outer conductor 141; the other end of which is a feeding end, located outside the outer conductor 141.
  • the connection end is used to connect to the microwave generating device to access the microwave; the connection method can be a coaxial connection method or a microstrip line connection method.
  • the microwave feeding device 2 is installed on the first outer conductor unit 11, the feeding end is relatively adjacent to the inner conductor unit 12, and is used to be inserted into the jack located on the conductor column 121 to achieve electrical coupling or magnetic coupling, thereby guiding the microwave to the inner conductor unit 12.
  • the inner conductor 142 is not limited to being in a straight line shape.
  • the inner conductor 142 can also be in an L shape (not shown), which includes a first section perpendicular to the axis of the first outer conductor unit 11 and a second section parallel to the first outer conductor unit 11.
  • the first section is integrally connected to the second section, and one end of the first section away from the second section can be connected to the microwave generating device, while one end of the second section away from the first section is in ohmic contact with the inner wall of the first outer conductor unit 11 (such as the first conductor end wall 114).
  • the cavity of the outer conductor unit is a cylindrical channel, and the inner diameter of the cavity is relatively large.
  • FIG. 4 which is a diagram of the electric field distribution of the microwave heating assembly in the cavity of the related art, it can be seen from FIG. 4 that at the position of the lower structure of the aerosol generating article 200, the relatively strong related area 3 in the electric field is gathered toward the probe, and the electric field fails to act on more of the lower structure of the aerosol generating article 200.
  • this figure is an electric field distribution diagram obtained by testing the microwave heating assembly 100 according to Example 1 of the present invention.
  • the outer diameter of the receiving portion 131 is 9 mm; and the maximum inner diameter of the first channel formed by the first head cavity section 1151 and the first neck cavity section 1152 is 20 mm (i.e., the maximum inner diameter of the first head cavity section 1151 is 20 mm), and the inner diameter of the first channel gradually decreases downward longitudinally, and its minimum inner diameter is 9.2 mm (the minimum inner diameter of the first neck cavity section 1152 is 9.2 mm).
  • the relatively strong related area 3 in the electric field obviously expands laterally, and the electric field can act on relatively more of the lower structure of the aerosol generating article 200.
  • the inner wall surface of the first neck cavity section 1152 is relatively close to the lower part of the receiving space 1311, so that when the aerosol generating product 200 is inserted into the receiving space 1311, the inner wall surface of the first neck cavity section 1152 is as close to the lower structure of the aerosol generating product 200 as possible, which can expand the strong electric field area around the lower structure of the aerosol generating product 200, enhance the heating effect on the lower structure of the aerosol generating product 200, and improve the problem of insufficient carbonization of the lower part of the aerosol generating product 200, thereby increasing the total smoke volume of the entire aerosol generating product 200 heating process (the upper, middle and lower parts of the aerosol generating product 200 are effectively carbonized).
  • a microwave heating assembly 1001 in Embodiment 2 of the present invention is shown, which is an improvement made on the basis of the above-mentioned Embodiment 1.
  • the difference between the microwave heating assembly 1001 and the above-mentioned Embodiment 1 is that the first outer conductor unit 11 in the above-mentioned Embodiment 1 is replaced by a second outer conductor unit 11a.
  • the second outer conductor unit 11a may include a conductive second conductor side wall 113a and a second conductor end wall 114a.
  • the second conductor side wall 113a may be cylindrical as a whole, and include two oppositely disposed ends.
  • the second conductor end wall 114a is closed on the first end of the second conductor side wall 113a to form a closed end 111; the second end of the second conductor side wall 113a is an open structure to form an open end 112.
  • the second conductor side wall 113a and the second conductor end wall 114a define a semi-enclosed second cavity 115a, which includes a second head cavity section 1151a, a second neck cavity section 1152a and a second tail cavity section 1153a connected to each other.
  • the three are arranged longitudinally and coaxially, the second head cavity section 1151a is adjacent to the open end 112, the second tail cavity section 1153a is adjacent to the closed end 111, the second neck cavity section 1152a is located between the second head cavity section 1151a and the second tail cavity section 1153a, and the second neck cavity section 1152a is correspondingly arranged at the lower part of the receiving space 1311 away from the open end 112.
  • one end of the second neck cavity section 1152a away from the opening end 112 is flush with the bottom end of the aerosol generating article 200 arranged in the second cavity 115a, and is located at the same height relative to the second cavity 115a.
  • the second head cavity section 1151a is a cylindrical channel.
  • the second neck cavity section 1152a is a cylindrical channel, and its inner diameter is smaller than the inner diameter of the second head cavity section 1151a, and together with the second head cavity section 1151a, a stepped second channel is formed.
  • the inner wall surface of the second neck cavity section 1152a is relatively close to the lower part of the receiving space 1311, so that when the aerosol generating article 200 is inserted into the receiving space 1311, the inner wall surface of the second neck cavity section 1152a is relatively close to the lower structure of the aerosol generating article 200.
  • the inner diameter of the second head cavity section 1151a is 20 mm
  • the inner diameter of the second neck cavity section 1152a is 9.2 mm.
  • the second tail cavity section 1153a is a cylindrical channel, and its inner diameter is larger than the inner diameter of the second neck cavity section 1152a.
  • a microwave heating assembly 1001 in Embodiment 3 of the present invention is shown, which is an improvement made on the basis of the above-mentioned Embodiment 1.
  • the difference between the microwave heating assembly 1001 and the above-mentioned Embodiment 1 is that the receiving seat 13 is removed, and the first outer conductor unit 11 in the above-mentioned Embodiment 1 is replaced by a third outer conductor unit 11 b.
  • the microwave heating assembly 100 does not include the receiving seat 13.
  • the outer conductor unit may include a conductive third conductor side wall 113b and a third conductor end wall 114b.
  • the third conductor side wall 113b may be cylindrical as a whole, and includes two oppositely disposed ends.
  • the third conductor end wall 114b is closed on the first end of the third conductor side wall 113b to form a closed end 111; the second end of the third conductor side wall 113b is an open structure to form an open end 112.
  • the third conductor side wall 113b and the third conductor end wall 114b define a semi-enclosed third cavity 115b, which includes a third head cavity section 1151b, a third neck cavity section 1152b and a third tail cavity section 1153b connected to each other.
  • the three are arranged longitudinally and coaxially, the third head cavity section 1151b is adjacent to the open end 112, the third tail cavity section 1153b is adjacent to the closed end 111, the third neck cavity section 1152b is located between the third head cavity section 1151b and the third tail cavity section 1153b, and the third neck cavity section 1152b is correspondingly arranged at the lower part of the receiving space 1311 away from the open end 112.
  • one end of the third neck cavity section 1152b away from the opening end 112 is flush with the bottom end of the aerosol generating article 200 arranged in the third cavity 115b, and is located at the same height relative to the third cavity 115b.
  • the third head cavity section 1151b is a truncated cone-shaped channel, and its inner diameter gradually decreases from the opening end 112 to the third neck cavity section 1152b.
  • the third neck cavity section 1152b is a truncated cone-shaped channel, and its inner diameter gradually decreases from the third head cavity section 1151b to the third tail cavity section 1153b.
  • the third tail cavity section 1153b is a cylindrical channel, and its inner diameter is larger than the minimum inner diameter of the third neck cavity section 1152b.
  • the receiving space 1311 is directly formed between the third neck cavity section 1152b and the third head cavity section 1151b.
  • the receiving space 1311 is located above the conductor disk 122 of the inner conductor unit 12, and the upper end of the probe of the inner conductor unit 12 extends upward into the second receiving space 1311.
  • a protrusion (not shown) may be provided on the top surface of the conductor disk 122, and when the lower structure of the aerosol generating article 200 extends into the receiving space 1311, an air intake gap 1312 is formed between the bottom end surface of the aerosol generating article 200 and the top surface of the conductor disk 122.
  • the inner diameter of the third neck cavity segment 1152b is relatively smaller than the first neck cavity segment 1152 in Embodiment 1, so that the inner wall surface of the third neck cavity segment 1152b can be closer to the outer wall surface of the aerosol generating article 200 relative to the first neck cavity segment 1152.
  • the inner diameter of the third neck cavity segment 1152b can be reduced to 7.2 mm.
  • the receiving seat 13 is not a necessary technical feature of the present invention. It is an optional technical solution used in Example 1 to better fix the aerosol generating product 200.
  • the aerosol generating product 200 can be fixed on the probe when it is inserted, and the aerosol generating product 200 can still be normally heated by microwave.
  • the receiving seat 13 since the receiving seat 13 is eliminated, the cavity space is expanded, and then the inner diameter of the third neck cavity section 1152b can be further reduced, so that the inner wall surface of the third neck cavity section 1152b can be closer to the outer wall surface of the aerosol generating product 200, further improving the heating (carbonization) effect of the lower structure of the aerosol generating product 200.

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  • Constitution Of High-Frequency Heating (AREA)

Abstract

L'invention concerne un dispositif de génération d'aérosol et un ensemble de chauffage par micro-ondes (100) associé. L'ensemble de chauffage par micro-ondes (100) comprend : une unité conducteur externe cylindrique (11, 11a, 11b) comprenant une extrémité ouverte (112), une extrémité fermée (111), et une cavité (115, 115a, 115b) formée entre l'extrémité ouverte (112) et l'extrémité fermée (111) ; et un espace de réception (1311) disposé dans la cavité (115, 115a, 115b) et utilisé pour recevoir un produit de génération d'aérosol (200). La cavité (115, 115a, 115b) comprend un segment cavité de tête (1151, 1151a, 1151b), un segment cavité de col (1152, 1152a, 1152b), et un segment cavité de fond (1153, 1153a, 1153b) qui sont en communication les uns avec les autres ; le segment cavité de tête (1151, 1151a, 1151b) est adjacent à l'extrémité ouverte (112), et le diamètre interne moyen du segment cavité de tête (1151, 1151a, 1151b) est supérieur au diamètre interne moyen du segment cavité de col (1152, 1152a, 1152b) ; le segment cavité de fond (1153,1153a, 1153b) est adjacent à l'extrémité fermée (111), et le diamètre interne moyen du segment cavité de fond (1153,1153a, 1153b) est supérieur au diamètre interne moyen du segment de cavité de col (1152, 1152a, 1152b) ; le segment cavité de col (1152, 1152a, 1152b) est situé entre le segment cavité de tête (1151, 1151a, 1151b) et le segment cavité de fond (1153,1153a, 1153b), et est disposé de manière correspondante au niveau de la partie inférieure de l'espace de réception (1311) à distance de l'extrémité ouverte (112). L'effet de chauffage sur la partie inférieure du produit de génération d'aérosol (200) est optimisé par réglage de la structure de cavité de l'unité conducteur externe (11, 11a, 11b) de l'ensemble de chauffage par micro-ondes (100).
PCT/CN2022/136035 2022-12-01 2022-12-01 Dispositif de génération d'aérosol et ensemble de chauffage par micro-ondes associé WO2024113327A1 (fr)

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