Aerosol-generating device

Abstract

The utility model relates to an aerosol generating device, which comprises a heating tube, a first end, a second end, a first electrode, a second electrode, a third electrode and a fourth electrode, the leading-in pipe is matched with the first end, and a leading-in channel is formed in the leading-in pipe; the base is matched with the second end, and an accommodating cavity is formed in the base; the leading-in channel, the heating cavity and the containing cavity are sequentially communicated to form a containing channel used for containing at least part of the aerosol generating product. The containing cavity comprises a conical cavity, the inner diameter of the conical cavity is gradually reduced from the end close to the heating cavity to the end away from the heating cavity, and the guiding effect can be achieved when the aerosol generating product is inserted. In addition, the inner diameter of the end, close to the heating cavity, of the conical cavity is larger than or equal to the inner diameter of the second end of the heating pipe, so that the aerosol generating product cannot be blocked in the process of entering the base from the heating pipe.

Description

Technical Field

[0001] This utility model relates to the field of aerosol generation technology, and in particular to an aerosol generation device. Background Technology

[0002] For aerosol forming devices that use circumferential heating, the heating element is typically fixed at the top and bottom by two structural components. During the insertion of the aerosol-generated product, which passes through multiple parts, jamming can easily occur. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an improved aerosol generating device in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: An aerosol generating device is provided, comprising: a heating tube having a first end and a second end opposite to each other in the axial direction, and a heating cavity formed inside the heating tube; an inlet tube fitted to the first end, having an inlet channel formed therein; and a base fitted to the second end, having a receiving cavity formed therein.

[0005] The inlet channel, the heating chamber, and the receiving chamber are connected in sequence to form a receiving channel for accommodating at least a portion of the aerosol-generated product.

[0006] The receiving cavity includes a conical cavity, the inner diameter of which gradually decreases from one end near the heating cavity to the end away from the heating cavity, and the inner diameter of the conical cavity at the end near the heating cavity is greater than or equal to the inner diameter of the second end of the heating tube.

[0007] In some embodiments, the outer diameter of the second end of the heating tube is larger than the inner diameter of the end of the conical cavity near the heating cavity.

[0008] In some embodiments, the difference between the inner diameter of the end of the conical cavity away from the heating cavity and the outer diameter of the aerosol-generating article is between -0.15 mm and +0.15 mm.

[0009] In some embodiments, the receiving cavity further includes a cylindrical cavity, which is connected to the end of the conical cavity away from the heating cavity, and the inner diameter of the cylindrical cavity is equal to the inner diameter of the end of the conical cavity away from the heating cavity.

[0010] In some embodiments, the inlet channel has an inlet end and an outlet end that are axially opposite each other, the outlet end being connected to the heating cavity.

[0011] The inner diameter of the inlet end is larger than the outer diameter of the aerosol-generated product.

[0012] In some embodiments, the minimum inner diameter of the inlet channel is less than or equal to the inner diameter of the first end of the heating element.

[0013] In some embodiments, the inner diameter of the inlet channel decreases continuously or discontinuously from the inlet end to the position of the minimum inner diameter.

[0014] In some embodiments, the inner diameter of the outlet end is less than or equal to the inner diameter of the first end of the heating element.

[0015] In some embodiments, the inlet channel includes at least one tapered channel, the inner diameter of which gradually decreases in the direction from the inlet end to the outlet end.

[0016] In some embodiments, the first end of the heating element is formed with a flared portion, the inner diameter of which gradually decreases in the direction from the first end to the second end.

[0017] The present invention has at least the following beneficial effects: the receiving cavity of the base includes a conical cavity, which can guide the aerosol generating product when it is inserted. In addition, the inner diameter of the end of the conical cavity near the heating cavity is greater than or equal to the inner diameter of the second end of the heating tube, so that the aerosol generating product will not get stuck when it enters the base from the heating tube. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0019] Figure 1 This invention provides a schematic diagram of the longitudinal cross-sectional structure of the aerosol generation system in some embodiments of the present invention.

[0020] Figure 2 yes Figure 1 Schematic diagram of the longitudinal cross-sectional structure of the aerosol generation device;

[0021] Figure 3 yes Figure 2 A schematic diagram of the longitudinal cross-sectional structure of the heating element;

[0022] Figure 4 yes Figure 2 A schematic diagram of the longitudinal cross-sectional structure of the inlet tube;

[0023] Figure 5 yes Figure 2 A schematic diagram of the longitudinal cross-sectional structure of the central base. Detailed Implementation

[0024] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] The terms "longitudinal", "lateral", "up", "down", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, four, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] Figure 1An aerosol generation system 1 according to some embodiments of the present invention is shown. The aerosol generation system 1 may include an aerosol generation device 100 and an aerosol generation article 200. The aerosol generation article 200 is movably inserted into the aerosol generation device 100, facilitating removal and replacement with a new aerosol generation article 200 after heating is complete. The aerosol generation device 100 can heat the aerosol generation article 200 inserted therein after being powered on, to release the aerosol extract in the aerosol generation article 200 in a non-combustible state.

[0030] In some embodiments, the aerosol generating article 200 may be cylindrical. Of course, in other embodiments, the aerosol generating article 200 may also be elliptical, polygonal, or other cylindrical shapes. The aerosol generating article 200 includes an outer layer 210 and an aerosol generating medium 220 disposed within the outer layer 210. The aerosol generating medium 220 may include solid materials in the form of strips, flakes, or granules made from the leaves and / or stems of plants (e.g., tobacco or tea leaves), and aroma components may be further added to the solid material.

[0031] In some embodiments, the aerosol generating article 200 further includes a plug 230 disposed within the outer casing 210. The end of the aerosol generating article 200 inserted into the aerosol generating device 100 is sealed by the plug 230, thus preventing residue from the aerosol generating medium 220 from falling and contaminating the aerosol generating device 100. Of course, in other embodiments, the aerosol generating article 200 may not include the plug 230.

[0032] The plug 230 can be made of a porous material, allowing outside air to flow into the aerosol generating medium 220 through the plug 230, and carrying away the aerosol generated after the aerosol generating medium 220 is heated. Of course, in other embodiments, the plug 230 can also be made of a non-porous material, and air passages for air circulation can be formed on the non-porous material through micromachining or other methods.

[0033] The aerosol generating device 100 may include a heating element 120 and an inlet pipe 110 and a base 130 respectively disposed at both ends of the heating element 120. The aerosol generating article 200 can be inserted into the heating element 120 through the inlet pipe 110, and the heating element 120 heats the aerosol generating article 200 contained therein after being energized.

[0034] The heating method used by the heating element 120 is not limited. For example, it can use one or more of the following: resistance heating, electromagnetic heating, infrared heating, laser heating, microwave heating, etc.

[0035] Combination Figures 2 to 5As shown, the heating element 120 may be cylindrical, and the inner wall of the heating element 120 defines a heating cavity 123 for accommodating at least a portion of the aerosol generating article 200. Of course, in other embodiments, the heating element 120 may also be other shapes such as elliptical tube, racetrack-shaped tube, or polygonal tube.

[0036] The heating element 120 has a first end 120a and a second end 120b that are axially opposite each other. An inlet tube 110 is fitted onto the first end 120a of the heating element 120, and a base 130 is fitted onto the second end 120b of the heating element 120. The inlet tube 110 and the base 130 cooperate to fix the heating element 120.

[0037] The first end 120a of the heating element 120 may have a flared portion 121, the cross-sectional area of ​​which gradually decreases from the first end 120a to the second end 120b, allowing the aerosol generating article 200 to be smoothly inserted into the heating element 120 through the flared portion 121. Of course, in other embodiments, the first end 120a of the heating element 120 may not have a flared portion 121.

[0038] Specifically, the heating element 120 may include a main body 122 and a flared portion 121 disposed at one end of the main body 122. The flared portion 121 and the main body 122 are coaxially arranged from the first end 120a to the second end 120b.

[0039] The flared portion 121 has an open end 121a away from the main body 122 and a connecting end 121b connected to the main body 122. In some embodiments, the flared portion 121 may be trumpet-shaped, but is not limited to a trumpet shape. The inner diameter of the flared portion 121 gradually decreases from the open end 121a to the connecting end 121b, and the outer diameter of the flared portion 121 also gradually decreases from the open end 121a to the connecting end 121b. The inner and outer diameters of the connecting end 121b of the flared portion 121 may be equal to the inner and outer diameters of the main body 122, respectively.

[0040] The inner diameter d1 of the open end 121a of the flared portion 121 (that is, the inner diameter of the first end 120a of the heating tube 120) can be larger than the outer diameter of the aerosol generating product 200, so that the aerosol generating product 200 can be smoothly inserted into the heating tube 120 through the open end 121a. The inner diameter d2 of the connecting end 121b of the flared portion 121 is approximately equal to the outer diameter of the aerosol generating product 200. Specifically, the inner diameter d2 of the connecting end 121b of the flared portion 121 can be equal to, slightly larger than, or slightly smaller than the outer diameter of the aerosol generating product 200.

[0041] An inlet channel 111 is formed within the inlet tube 110, communicating with the heating chamber 123. The inlet channel 111 has an inlet end 111a and an outlet end 111b that are axially opposite each other, and the inlet channel 111 communicates with the heating chamber 123 at the outlet end 111b. The aerosol-generating article 200 can be inserted into the inlet channel 111 through the inlet end 111a and enter the heating chamber 123 through the outlet end 111b.

[0042] The inner diameter of the inlet end 111a is larger than the outer diameter of the aerosol generating article 200, which facilitates the insertion of the aerosol generating article 200.

[0043] The minimum inner diameter d3 of the inlet channel 111 is less than or equal to the inner diameter d1 of the opening end 121a of the flared part 121, ensuring that the aerosol generating product 200 can be smoothly inserted into the heating tube 120 through the inlet channel 111 without jamming.

[0044] The inner diameter d4 of the outlet end 111b of the inlet channel 111 can be greater than or equal to the minimum inner diameter d3 of the inlet channel 111. In other words, the minimum inner diameter of the inlet channel 111 can be located at the outlet end 111b of the inlet channel 111, or it can be located at the outlet end 111b of the inlet channel 111.

[0045] Preferably, the inner diameter d4 of the outlet end 111b of the inlet channel 111 is less than or equal to the inner diameter d1 of the opening end 121a of the flared part 121, ensuring that the aerosol generating product 200 can be smoothly inserted into the heating tube 120 through the outlet end 111b without jamming.

[0046] Meanwhile, the inner diameter d4 of the outlet end 111b of the inlet channel 111 is less than or equal to the inner diameter d1 of the opening end 121a of the flared portion 121, which can also form an abutment surface 1115 at the outlet end 111b of the inlet channel 111, against which the first end 120a of the heating tube 120 abuts.

[0047] The inner diameter of the inlet channel 111 from the inlet end 111a to the minimum inner diameter position can decrease continuously or discontinuously. In this embodiment, the inner diameter of the inlet channel 111 from the inlet end 111a to the minimum inner diameter position decreases discontinuously.

[0048] The inlet channel 111 may include at least two channel segments 1110 connected sequentially from the inlet end 111a to the outlet end 111b. At least one of the at least two channel segments 1110 is a conical channel. The inner diameter (or cross-sectional area) of the conical channel gradually decreases from the inlet end 111a to the outlet end 111b, serving as a guide when the aerosol-generated article 200 is inserted.

[0049] In some embodiments, the at least two channels 1110 may also include one or more columnar channels, the inner diameter (or cross-sectional area) of which remains constant in the axial direction. When the inlet channel 111 includes at least two conical channels, adjacent conical channels can be connected by columnar channels.

[0050] The minimum inner diameter of the inlet channel 111 can be formed in a columnar channel or in a conical channel.

[0051] Of course, in other embodiments, the inlet channel 111 may also have only a conical channel and not a columnar channel.

[0052] Specifically, in this embodiment, the inlet channel 111 may include a first channel 1111, a second channel 1112, and a third channel 1113, which are sequentially connected in the direction from the inlet end 111a to the outlet end 111b. The first channel 1111 may be a cylindrical channel (e.g., a cylindrical channel) with its inner diameter remaining constant in the axial direction, and its inner diameter is larger than the outer diameter of the aerosol-generating article 200. The second channel 1112 may be a conical channel (e.g., a conical or quasi-conical channel) with its inner diameter gradually decreasing from the end near the first channel 1111 to the end away from the first channel 1111. The third channel 1113 may be a cylindrical channel (e.g., a cylindrical channel), and its inner diameter defines the minimum inner diameter d3 of the inlet channel 111.

[0053] Of course, in other embodiments, the first channel 1111 may also be a cone or conical shape that gradually decreases in size from the end near the inlet end 111a to the end away from the inlet end 111a, and / or the second channel 1112 may also be a cylinder with a constant inner diameter, and / or the third channel 1113 may also be a cone or conical shape that gradually decreases in size from the end near the inlet end 111a to the end away from the inlet end 111a.

[0054] In some embodiments, the inlet channel 111 may further include a fourth channel 1114, which is connected to the end of the third channel 1113 away from the inlet end 111a. In this embodiment, the fourth channel 1114 is conical (e.g., conical or quasi-conical) with an inner diameter that gradually increases from the end near the inlet end 111a to the end away from the inlet end 111a. Of course, in other embodiments, the inlet channel 111 may not include the fourth channel 1114.

[0055] In addition, the channels 1110 of the inlet channel 111 are smoothly connected, that is, there are no steps at the connection between any two adjacent channels 1110, ensuring that the aerosol-generated product 200 will not get stuck during insertion.

[0056] The first end 120a of the heating element 120 can be inserted into the inlet tube 110. Specifically, the end of the inlet tube 110 away from the inlet end 111a has a insertion hole 112, and the first end 120a of the heating element 120 is disposed in the insertion hole 112. Since the inner diameter d4 of the outlet end 111b of the inlet channel 111 is less than or equal to the inner diameter d1 of the opening end 121a of the flared portion 121, the end face of the first end 120a of the heating element 120 can also abut against the end face of the outlet end 111b of the inlet channel 111.

[0057] A sealing material or heat insulation material may also be provided between the outer wall surface of the heating element 120 and the inner wall surface of the insertion hole 112. Of course, in other embodiments, the outer wall surface of the heating element 120 and the inner wall surface of the insertion hole 112 may also be in direct contact.

[0058] Of course, in other embodiments, the inlet tube 110 may not have a insertion hole 112, and the inlet tube 110 and the heating tube 120 may abut against each other at the end face, which can also achieve the fixation between the inlet tube 110 and the heating tube 120.

[0059] The second end 120b of the heating element 120 can be inserted into the base 130. Specifically, one end of the base 130 has a mounting hole 131, and the second end 120b of the heating element 120 is disposed in the mounting hole 131.

[0060] A sealing element 140 may be provided between the outer wall surface of the heating element 120 and the inner wall surface of the mounting hole 131. Of course, in other embodiments, the outer wall surface of the heating element 120 and the inner wall surface of the mounting hole 131 may also be in direct contact.

[0061] In other embodiments, the base 130 may not have mounting holes 131, and the base 130 and the heating element 120 may only abut against each other at their end faces.

[0062] In some embodiments, the base 130 may have a receiving cavity 132, and the inlet channel 111, the heating cavity 123, and the receiving cavity 132 are sequentially connected to form a receiving channel 150 for receiving at least a portion of the aerosol generating article 200. Specifically, the aerosol generating medium 220 of the aerosol generating article 200 is received in the heating cavity 123, and the plug 230 is received in the receiving cavity 132.

[0063] The bottom of the receiving cavity 132 has a support surface 1323, which can be used to support the aerosol generating article 200. When the aerosol generating article 200 is inserted into the receiving cavity 132, the bottom surface of the aerosol generating article 200 can abut against the support surface 1323.

[0064] The receiving cavity 132 includes a conical cavity 1321. The inner diameter of the conical cavity 1321 gradually decreases from the end near the heating cavity 123 to the end away from the heating cavity 123, which serves as a guide when the aerosol-generated product 200 is inserted.

[0065] The conical cavity 1321 is connected to the second end 120b of the heating cavity 123. The inner diameter d5 of the end of the conical cavity 1321 near the heating cavity 123 is greater than or equal to the inner diameter of the second end 120b of the heating tube 120. That is, the inner diameter d5 of the end of the conical cavity 1321 near the heating cavity 123 is greater than or equal to the inner diameter of the main body 122, so that the aerosol generating product 200 will not get stuck when it enters the base 130 from the heating tube 120.

[0066] In addition, the inner diameter d5 of the conical cavity 1321 near the heating cavity 123 is greater than or equal to the outer diameter of the aerosol generating article 200, ensuring that the aerosol generating article 200 can be smoothly inserted.

[0067] The outer diameter of the second end 120b of the heating tube 120 (that is, the outer diameter of the main body 122) is greater than the inner diameter d5 of the end of the conical cavity 1321 near the heating cavity 123, so that a support surface 1324 is formed at the top of the conical cavity 1321 to support the heating tube 120.

[0068] In some embodiments, the receiving cavity 132 may further include a cylindrical cavity 1322, which is connected to the end of the conical cavity 1321 away from the heating cavity 123. The cylindrical cavity 1322 can be cylindrical with a constant inner diameter. The inner diameter of the cylindrical cavity 1322 is equal to the inner diameter of the end of the conical cavity 1321 away from the heating cavity 123. No step is formed at the connection between the cylindrical cavity 1322 and the heating cavity 123, thereby ensuring that the aerosol generating article 200 will not jam during insertion.

[0069] The inner diameter d6 of the cylindrical cavity 1322 is approximately equal to the outer diameter of the aerosol generating product 200. Specifically, assuming the outer diameter of the aerosol generating product 200 is G, the value of the inner diameter d6 is within the range of G ± 0.15 mm. Thus, when the aerosol generating product 200 is inserted into the base 130, the interference fit or gap between the plug 230 and the base 130 can be maintained at a reasonable value. This ensures that the force on the aerosol generating product 200 when inserted into the base 130 is not excessive, and also minimizes the inflow of air from the side of the aerosol generating product 200, maintaining consistent suction resistance.

[0070] Understandably, in other embodiments, the receiving cavity 132 may also have only a conical cavity 1321 without a cylindrical cavity 1322.

[0071] In some embodiments, the base 130 may also have an air intake channel 133. During the suction process, outside air can enter through the air intake channel 133 and enter the aerosol generating medium 220 through the plug 230.

[0072] In some embodiments, the air intake channel 133 may extend in a straight line, and the air intake channel 133, the receiving cavity 132, and the heating cavity 123 may be coaxially arranged and sequentially connected. Of course, in other embodiments, the air intake channel 133 may also extend in a non-linear shape.

[0073] 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. An aerosol generating device, characterized in that, include: A heating element (120) having a first end (120a) and a second end (120b) opposite each other in the axial direction, and a heating cavity (123) is formed inside the heating element (120); An inlet tube (110) is fitted to the first end (120a), and an inlet channel (111) is formed therein; and The base (130) fits into the second end (120b) and has a receiving cavity (132) formed therein. The inlet channel (111), the heating chamber (123), and the receiving chamber (132) are connected in sequence to form a receiving channel (150) for accommodating at least a portion of the aerosol-generating article (200). The receiving cavity (132) includes a conical cavity (1321) whose inner diameter gradually decreases from one end near the heating cavity (123) to the end away from the heating cavity (123), and the inner diameter of the end of the conical cavity (1321) near the heating cavity (123) is greater than or equal to the inner diameter of the second end (120b) of the heating tube (120).

2. The aerosol generating apparatus according to claim 1, characterized in that, The outer diameter of the second end (120b) of the heating tube (120) is larger than the inner diameter of the end of the conical cavity (1321) near the heating cavity (123).

3. The aerosol generating apparatus according to claim 1, characterized in that, The difference between the inner diameter of the end of the conical cavity (1321) away from the heating cavity (123) and the outer diameter of the aerosol generating article (200) is between -0.15 mm and +0.15 mm.

4. The aerosol generating apparatus according to claim 1, characterized in that, The receiving cavity (132) further includes a cylindrical cavity (1322), which is connected to the end of the conical cavity (1321) away from the heating cavity (123), and the inner diameter of the cylindrical cavity (1322) is equal to the inner diameter of the end of the conical cavity (1321) away from the heating cavity (123).

5. The aerosol generating apparatus according to claim 1, characterized in that, The inlet channel (111) has an inlet end (111a) and an outlet end (111b) that are axially opposite each other, and the outlet end (111b) is connected to the heating chamber (123). The inner diameter of the inlet end (111a) is larger than the outer diameter of the aerosol generating article (200).

6. The aerosol generating apparatus according to claim 5, characterized in that, The minimum inner diameter of the inlet channel (111) is less than or equal to the inner diameter of the first end (120a) of the heating tube (120).

7. The aerosol generating apparatus according to claim 6, characterized in that, The inner diameter of the inlet channel (111) decreases continuously or discontinuously from the inlet end (111a) to the position of the minimum inner diameter.

8. The aerosol generating apparatus according to claim 5, characterized in that, The inner diameter of the outlet end (111b) is less than or equal to the inner diameter of the first end (120a) of the heating tube (120).

9. The aerosol generating apparatus according to claim 5, characterized in that, The inlet channel (111) includes at least one tapered channel, the inner diameter of which gradually decreases in the direction from the inlet end (111a) to the outlet end (111b).

10. The aerosol generating apparatus according to any one of claims 1-9, characterized in that, The first end (120a) of the heating tube (120) has a flared portion (121) formed therein, and the inner diameter of the flared portion (121) gradually decreases in the direction from the first end (120a) to the second end (120b).

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