Patent Application
20250031755
This application claims priority to Chinese Patent Application No. 202310937475.2 filed Jul. 27, 2023, the disclosure of which is incorporated herein by reference in its entirety.
The present disclosure relates to the field of electronic cigarette technology and, in particular, to a heat-not-burn cartridge.
Existing heat-not-burn cartridges typically consist of a plug portion, a smoke generating portion, a cooling portion, and a filter portion connected in series and wrapped by a paper sleeve. During usage, the heat-not-burn cartridge is inserted into a smoking device, allowing heating components such as a heating needle or a heating sheet within the smoking device to insert into the smoke generating portion. This heats the smoke generating portion to produce an aerosol. The aerosol is first cooled by the cooling portion, then filtered by the filter portion, and finally inhaled by the user. However, in the existing heat-not-burn cartridges, the cooling efficiency of the cooling portion is insufficient, affecting the filtering performance of the filter portion. This compromises the safety and reliability of structures of both the heat-not-burn cartridge and the smoking device, diminishing the user experience.
The present disclosure provides a heat-not-burn cartridge to perform cooling more efficiently.
The heat-not-burn cartridge includes a tandem assembly, a metal sleeve, and a paper sleeve.
The tandem assembly includes a plug portion, a smoke generating portion, a cooling portion, and a filter portion that sequentially abut against one another in a first direction. The cooling portion includes a cooling cylinder and a throttle plate. The outer wall of the cooling cylinder is formed with a flow slot. The flow slot penetrates to both ends of the cooling cylinder in the axial direction of the cooling cylinder. The throttle plate is disposed in an inner channel of the cooling cylinder. The throttle plate is formed with a flow hole.
The metal sleeve sleeves outside the plug portion, the smoke generating portion, and the cooling portion.
The paper sleeve sleeves outside the filter portion and part of the metal sleeve.
In some embodiments, the outer wall of the cooling cylinder is uniformly formed with multiple flow slots in the circumferential direction of the cooling cylinder.
In some embodiments, the outer wall of the cooling cylinder is provided with multiple ribs. Each flow slot is formed between two adjacent ribs.
In some embodiments, each rib extends linearly in the first direction.
In some embodiments, each rib spirals around the axis of the cooling cylinder.
In some embodiments, the width of each flow slot gradually increases from the slot bottom of the each flow slot to the notch of the each flow slot.
In some embodiments, the throttle plate is located at a midpoint of the cooling cylinder in the axial direction of the cooling cylinder.
In some embodiments, the axial length of the metal sleeve is equal to the sum of the length of the plug portion, the length of the smoke generating portion, and the length of the cooling portion.
In some embodiments, the axial length of the paper sleeve is equal to the sum of the length of the filter portion and the length of the cooling portion.
In some embodiments, the diameter of the filter portion is equal to the outer diameter of the metal sleeve. The filter portion abuts against an end of the metal sleeve.
Embodiments of the present disclosure are described in detail below. Examples of the embodiments are illustrated in the drawings, where the same or similar reference numerals indicate the same or similar elements or components having the same or similar functions. The embodiments described hereinafter with reference to the drawings are merely exemplary. The embodiments are intended to explain the present disclosure and are not to be construed as limiting the present disclosure.
In the description of the present disclosure, unless otherwise expressly specified and limited, the term “connected to each other”, “connected” or “secured” is to be construed in a broad sense, for example, as securely connected or detachably connected; mechanically connected or electrically connected; directly connected to each other or indirectly connected to each other via an intermediary; or internally connected between two elements or interactional relations between two elements. For those of ordinary skilled in the art, the preceding terms may be construed according to specific circumstances in the present disclosure.
In the description of the present disclosure, unless otherwise expressly specified and limited, when a first feature is described as “on” or “below” a second feature, the first feature and the second feature may be in direct contact or be in contact via another feature between the two features instead of being in direct contact. Moreover, when the first feature is described as “on”, “above” or “over” the second feature, the first feature is right on, above or over the second feature or the first feature is obliquely on, above or over the second feature, or the first feature is simply at a higher level than the second feature. When the first feature is described as “under”, “below”, or “underneath” the second feature, the first feature is right under, below, or underneath the second feature or the first feature is obliquely under, below, or underneath the second feature, or the first feature is simply at a lower level than the second feature.
Technical solutions of the present disclosure are further described hereinafter in conjunction with the drawings and the embodiments.
As shown in
In the present disclosure, the metal sleeve 2 sleeves outside the cooling portion 13, the smoke generating portion 12, and the plug portion 11. Compared with the existing cartridge sleeved by a paper sleeve, the metal sleeve 2 can conduct the heat from the cooling portion 13 more efficiently and has a stronger heat conduction performance. Additionally, the metal sleeve 2 can dissipate heat from both the smoke generating portion 12 and the plug portion 11 simultaneously, ensuring the smoke generating portion 12 is heated in a safer and more reliable manner. Since the amount of elastic deformation of the metal sleeve 2 is smaller than the amount of elastic deformation of the paper sleeve, when the smoke generating portion 12 is squeezed, the smoke generating portion 12 can deform only in the direction toward the plug portion 11 and the direction toward the cooling portion 13. The inner channel of the cooling cylinder 131 can accommodate the deformed and convex smoke generating portion 12. This design prevents the internal air gap from reducing and the suction resistance from increasing due to the compaction of the smoke generating portion 12, and the throttle plate 132 in the cooling cylinder 131 plays the role of throttling and increases the contact area with airflow. Thus, the cooling and heat dissipation effect of the cooling portion 13 is prevented from being affected by an excessive airflow flux and flow rate. Moreover, the flow slot 1311 on the outer wall of the cooling cylinder 131 plays the role of flow guiding, thereby further increasing the contact area with the airflow and improving the cooling and heat dissipation effect.
Specifically, the plug portion 11 is obtained by compacting herbs and has a leak proof and breathable effect. The plug portion 11 plugs an end of the metal sleeve 2 to prevent the smoke generating portion 12 from coming out of the metal sleeve 2.
More specifically, the smoke generating portion 12 is obtained by compacting herbs. The density of the smoke generating portion 12 is smaller than the density of the plug portion 11. When heated, the smoke generating portion 12 can produce aerosol.
In this embodiment, the plug portion 11 and the smoke generating portion 12 are cylindrical. The axial length of the plug portion 11 is smaller than the axial length of the smoke generating portion 12. The plug portion 11 and the smoke generating portion 12 are prepared from a blend of cut tobacco, alcohol reagent, ester reagent, and essence. The preparation process and material selection are conventional settings in the art, and the details are not elaborated here.
Specifically, the cooling portion 13 is prepared from high-temperature-resistant, odorless, and food-grade plastic. The filter portion 14 is prepared from filter cotton. The preparation process and material selection are conventional settings in the art, and the details are not elaborated here.
More specifically, the metal sleeve 2 is prepared from a high-temperature-resistant, highly ductile, tough, and thin-body metalloid calendered material, such as aluminum foil, copper foil, and other high thermal conductivity materials. The paper sleeve 3 is prepared from a high-temperature-resistant and conductive paper material. The preparation process and material selection are conventional settings in the art, and the details are not elaborated here.
Specifically, the outer wall of the cooling cylinder 131 is uniformly formed with multiple flow slots 1311 in the circumferential direction of the cooling cylinder 131. The multiple flow slots 1311 are uniformly disposed, so that airflow circulation is more dispersed and balanced. Thus, the contact area between airflow and the cooling cylinder 131 is further increased, and the cooling and heat dissipation effect is improved.
More specifically, the outer wall of the cooling cylinder 131 is provided with multiple ribs 1312. Each flow slot 1311 is formed between two adjacent ribs 1312. The preceding structure is simple to form and convenient to process.
In an embodiment, each rib 1312 extends linearly in the first direction, so that airflow circulation is smoother. In another embodiment, the rib 1312 spirals around the axis of the cooling cylinder 131. Thus, the contact area between the airflow and the cooling cylinder 131 is increased. In the practical setting, the extending form of the ribs 1312 may be set according to different suction resistance requirements.
In this embodiment, the width of each flow slot 1311 gradually increases from the slot bottom of the each flow slot 1311 to the notch of the each flow slot 1311. The sectional shape of a rib 1312 is rectangular. With the preceding settings, the flow slot 1311 is simpler to form and more convenient to process.
Specifically, the throttle plate 132 is located at the midpoint of the cooling cylinder 131 in the axial direction of the cooling cylinder 131, so that it is simpler to assemble. An end of the smoke generating portion 12, the ends of the cooling portion 13, and an end of the filter portion 14 directly abut against one another without considering the orientation of the cooling portion 13.
In an embodiment, a flow hole 1321 is disposed at the center of the throttle plate 132. The size of the diameter of the flow hole 1321 may be determined according to design requirements. In another embodiment, the throttle plate 132 is uniformly formed with multiple flow holes 1321, so that the airflow in circulation is more dispersed and smooth. In an embodiment, one throttle plate 132 is disposed. In another embodiment, multiple throttle plates 132 may also be disposed at intervals. The flow holes 1321 on different throttle plates 132 are disposed in staggered positions.
In this embodiment, the cooling cylinder 131 and the throttle plate 132 are integrally formed. The cross-sectional shape of the inner channel of the cooling cylinder 131 is circular. The throttle plate 132 is a circular plate structure.
Specifically, the axial length of the metal sleeve 2 is equal to the sum of the length of the plug portion 11, the length of the smoke generating portion 12, and the length of the cooling portion 13. With the preceding settings, the plug portion 11, the smoke generating portion 12, and the cooling portion 13 are completely wrapped by the metal sleeve 2, so that the structure is safer.
More specifically, the axial length of the paper sleeve 3 is equal to the sum of the length of the filter portion 14 and the length of the cooling portion 13. With the preceding settings, the filter portion 14 is completely wrapped by the paper sleeve 3, so that the structure is safer. On this basis, the paper sleeve 3 is outside the metal sleeve 2 and extends to completely cover the cooling portion 13, so that the paper sleeve 3 is more reliably connected to the metal sleeve 2. In this manner, the plug portion 11, the smoke generating portion 12, the cooling portion 13, and the filter portion 14 can be more safely connected in series.
In this embodiment, the diameter of the filter portion 14 is equal to the outer diameter of the metal sleeve 2. The filter portion 14 abuts against an end of the metal sleeve 2. With the preceding settings, the positioning of the metal sleeve 2 is more accurate, and the outer wall of the paper sleeve 3 is smoother.
The metal sleeve sleeves outside the cooling portion, the smoke generating portion, and the plug portion. Compared with the existing cartridge sleeved by a paper sleeve, the metal sleeve can conduct the heat from the cooling portion more efficiently and has a stronger heat conduction performance. Additionally, the metal sleeve can dissipate heat from both the smoke generating portion and the plug portion simultaneously, ensuring the smoke generating portion is heated in a safer and more reliable manner. Since the amount of elastic deformation of the metal sleeve is smaller than the amount of elastic deformation of the paper sleeve, when the smoke generating portion is squeezed, the smoke generating portion can deform only in the direction toward the plug portion and the direction toward the cooling portion. The inner channel of the cooling cylinder can accommodate the deformed and convex smoke generating portion. This design prevents the internal air gap from reducing and the suction resistance from increasing due to the compaction of the smoke generating portion, and the throttle plate in the cooling cylinder plays the role of throttling and increases the contact area with airflow. Thus, the cooling and heat dissipation effect of the cooling portion is prevented from being affected by an excessive airflow flux and flow rate. Moreover, the flow slot on the outer wall of the cooling cylinder plays the role of flow guiding, thereby further increasing the contact area with the airflow and improving the cooling and heat dissipation effect.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202310937475.2 | Jul 2023 | CN | national |
