A heating assembly and an aerosol-generating device

Abstract

This utility model relates to the technical field of aerosol generating devices, and in particular discloses a heating component and an aerosol generating device, including a heating tube, a first end cap, and a first sealing member. The heating tube is used to accommodate at least a portion of an aerosol generating article and to heat the aerosol generating article to generate aerosol. The first end cap is used to provide support for the aerosol generating article. The first sealing member is supported by the first end cap and is provided with a first receiving groove. The first receiving groove accommodates a portion of the heating tube, the bottom of the first receiving groove seals the end face of the heating tube, and the sidewall of the first receiving groove seals the outer sidewall of the heating tube. Through the above method, this utility model embodiment can avoid the risk of aerosol leakage, thereby not affecting the heating efficiency of the heating tube.

Description

Technical Field

[0001] This utility model relates to the technical field of aerosol generating devices, and in particular to a heating component and an aerosol generating device. Background Technology

[0002] Aerosol generating devices heat aerosol-generating products using heating components to produce aerosols for users to inhale. Existing heating components include a heating element, an end cap, and a seal. The seal is located between the heating element and the end cap and is used to seal the gap between them.

[0003] However, in the process of implementing the embodiments of this utility model, the inventors discovered that: currently, the end face of the heating tube is held against the surface of the sealing element to achieve end face sealing. However, with the increasing demand for small heat capacity of the heating element due to rapid aerosol discharge, the wall thickness of the heating tube is becoming thinner and thinner. The end face sealing method may pose a risk of aerosol leakage, affecting the heating efficiency of the heating tube. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a heating component and an aerosol generating device, which aims to solve the problem that the end-face sealing method may have the risk of aerosol leakage, which affects the heating efficiency of the heating tube.

[0005] To solve the above-mentioned technical problems, the present invention provides a heating assembly, including a heating tube, a first end cap, and a first sealing member. The heating tube is used to contain at least a portion of an aerosol generating article and to heat the aerosol generating article to generate aerosol. The first end cap is used to provide support for the aerosol generating article. The first sealing member is supported on the first end cap and has a first receiving groove. The first receiving groove contains a portion of the heating tube, the bottom of the first receiving groove seals the end face of the heating tube, and the sidewall of the first receiving groove seals the outer sidewall of the heating tube.

[0006] Optionally, the bottom of the first receiving groove is provided with an opening, and the first end cap is provided with a second receiving groove. The opening connects the heating tube and the second receiving groove, and the opening and the second receiving groove are used for the insertion of the aerosol generating product.

[0007] Optionally, the heating assembly includes a clamping member connected to the end of the heating tube away from the first end cap. The clamping member is provided with a first claw, and the first end cap is provided with a second claw. The first claw and the second claw are used to clamp the aerosol-generating product.

[0008] Optionally, the heating element has a wall thickness of no more than 0.8 mm.

[0009] Optionally, along the direction from the heating tube to the first end cap, the cross-sectional area of ​​the opening gradually increases, and the diameter of the end of the opening facing the heating tube is larger than the inner diameter of the heating tube.

[0010] Optionally, the diameter of the end of the opening facing the heating tube is 0.05-0.5 mm larger than the inner diameter of the heating tube.

[0011] Optionally, the first end cap is provided with a support rib for supporting the aerosol-generating product, the support rib and the second claw are staggered and disposed on the side wall of the second receiving groove, and a first airflow channel is defined between the support rib and the second claw.

[0012] Optionally, the first sealing member is supported on the end face of the first end cap facing the heating tube, the first sealing member is provided with a fixing groove, the first end cap is provided with a fixing part, and the fixing part is inserted into the fixing groove.

[0013] Optionally, the first seal is provided with at least one partition that separates the fixing groove, the partition having a first wire passage hole for the electrode wire of the heating element to pass through, and / or, the heating assembly includes a temperature sensor for detecting the temperature of the heating element, the partition having a second wire passage hole for the electrode lead of the temperature sensor to pass through.

[0014] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is to provide an aerosol generating device, including the heating component mentioned above.

[0015] In this embodiment of the invention, the end face of the heating tube is sealed by the bottom of the first receiving groove of the first sealing member, and the outer wall of the heating tube is sealed by the side wall of the first receiving groove, so as to achieve a reliable seal on the end of the heating tube facing the first end cap, avoid the risk of aerosol leakage, and thus not affect the heating efficiency of the heating tube. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0017] Figure 1 This is a schematic cross-sectional view of the heating assembly for generating articles by inserting aerosols according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of the heating assembly according to an embodiment of the present invention;

[0019] Figure 3 This is an exploded view of the heating assembly according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic cross-sectional view of the structure of the first sealing element of the heating assembly according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the first sealing element of the heating assembly according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic cross-sectional view of the first end cap of the heating assembly according to an embodiment of the present invention;

[0023] Figure 7 This is a cross-sectional schematic diagram of the clamping component of the heating assembly according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Heating components;

[0026] 11. Heating element;

[0027] 12. First end cap; 121. Second receiving groove; 122. Second claw; 1221. Second claw portion; 123. Support rib; 1231. Rib portion; 124. First airflow channel; 125. Fixing portion; 1251. First notch;

[0028] 13. First sealing element; 131. First receiving groove; 132. Opening; 133. Fixing groove; 134. Separator; 1341. First wire passage hole; 1342. Second wire passage hole;

[0029] 14. Clamping component; 141. First gripper; 1411. First gripper portion; 142. Second airflow channel;

[0030] 15. Temperature sensor;

[0031] 16. Second end cap;

[0032] 17. Second sealing element;

[0033] 18. Insulation pipe;

[0034] 19. Receptacle cavity;

[0035] 1a. Thermal insulation components;

[0036] 1b. Fasteners;

[0037] 2. Aerosol-generated products. Detailed Implementation

[0038] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "locked" to another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0039] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0040] Please see Figures 1-4 This utility model provides a heating assembly 1, which includes a heating tube 11, a first end cap 12, and a first sealing member 13. The heating tube 11 is hollow to accommodate at least a portion of an aerosol generating article 2 and to heat the aerosol generating article 2 to generate aerosol. The first end cap 12 provides support for the aerosol generating article 2. The first sealing member 13 is supported on the first end cap 12 and has a first receiving groove 131. The first receiving groove 131 accommodates a portion of the heating tube 11, and the bottom of the first receiving groove 131 seals the end face of the heating tube 11, which is the end face of the heating tube 11 facing the first end cap 12. The sidewall of the first receiving groove 131 seals the outer sidewall of the heating tube 11. The end face of the heating tube 11 is sealed by the bottom of the first receiving groove 131 of the first sealing member 13, and the outer wall of the heating tube 11 is sealed by the side wall of the first receiving groove 131, so as to achieve a reliable seal on the end of the heating tube 11 facing the first end cap 12, avoid the risk of aerosol leakage, and thus not affect the heating efficiency of the heating tube 11.

[0041] In some embodiments, a heating element (not shown) is disposed on the outer wall of the heating tube 11. The heating element can be a resistive heating mesh or a thick-film heating material, thereby allowing the heating element to be attached to the outer wall of the heating tube 11. The heating tube 11 is made of a material with high thermal conductivity, which can be a metal or a ceramic material. The ceramic material can be any one of oxides, nitrides, carbides, borides, etc. The heat generated by the heating element is then transferred to the aerosol generating product 2 through the heating tube 11, thereby heating the aerosol generating product 2.

[0042] Alternatively, in some embodiments, the heating element may be an infrared electrothermal coating attached to the outer wall of the heating tube 11. After the infrared electrothermal coating is energized, it heats up and generates infrared rays. The infrared rays radiate into the heating tube 11 and are then absorbed by the aerosol generating product 2, thereby generating heat in the aerosol generating product 2.

[0043] Alternatively, in some embodiments, the heating element 11 is made of a conductive material and is surrounded by an induction coil (not shown). The controller controls the battery to pass an alternating current into the induction coil. The induction coil generates a changing magnetic field under the action of the alternating current. This changing magnetic field penetrates the heating element 11 and induces eddy currents in the heating element 11. The heating element 11 generates heat under the action of the eddy current effect and the hysteresis effect, which can then heat the aerosol generating product 2 in the heating element 11.

[0044] The suitable material for the heating element 11 can be any one of graphite, molybdenum, silicon carbide, stainless steel, niobium, aluminum, nickel, iron, copper, nickel-containing compounds, titanium, and metal composites. In some embodiments, to better induce eddy currents and improve heating efficiency, the heating element 10 is preferably made of ferromagnetic materials or composed of ferromagnetic materials, such as ferritic iron, ferromagnetic alloys (e.g., ferromagnetic steel or stainless steel), ferromagnetic particles, and ferrite.

[0045] In some embodiments, the heating element 11 has a wall thickness of no more than 0.8 mm.

[0046] In some embodiments, please refer to Figures 4-6 The first receiving groove 131 has an opening 132 at its bottom, and the first end cap 12 has a second receiving groove 121. The opening 132 connects the heating element 11 and the second receiving groove 121. The opening 132 and the second receiving groove 121 are used for inserting the aerosol generating product 2, so that part of the aerosol generating product 2 is contained in the second receiving groove 121. It should be noted that when the aerosol generating product 2 has a filter section at its tail end, the filter section at the tail end of the aerosol generating product 2 will be contained in the second receiving groove 121, thereby reducing the length of the heating element 11, increasing the heating rate of the heating element 11, and reducing the power consumption of the heating element 11. In addition, since the filter section of the aerosol generating product 2 is contained in the second receiving groove 121, the filter section of the aerosol generating product 2 is far away from the heating element 11, preventing the filter section of the aerosol generating product 2 from melting and producing a burnt taste due to excessive heating temperature, thereby avoiding affecting the inhalation experience.

[0047] In some embodiments, please refer to Figure 4 and Figure 5Along the direction from the heating tube 11 to the first end cap 12, the cross-sectional area of ​​the opening 132 gradually increases, and the diameter of the end of the opening 132 facing the heating tube 11 is larger than the inner diameter of the heating tube 11. This causes the first sealing member 13 to be deformed by the heating tube 11 and the first end cap 12, and when the aerosol generating product 2 is inserted into the heating tube 11, the opening 132 and the second receiving groove 121, a first gap is maintained between the side wall and the outer side wall of one end of the opening 132. The first gap connects to the outside, so that the outside airflow can smoothly enter the aerosol generating product 2 through the first gap, avoiding the user's feeling of suffocation when inhaling.

[0048] In some embodiments, the diameter of the end of the opening 132 facing the heating tube 11 is 0.05-0.5 mm larger than the inner diameter of the heating tube 11.

[0049] In some embodiments, please refer to Figure 2 , Figure 3 , Figure 6 and Figure 7 The heating assembly 1 also includes a clamping member 14, which is connected to the end of the heating tube 11 away from the first end cap 12. The clamping member 14 is provided with a first claw 141, and the first end cap 12 is provided with a second claw 122. The first claw 141 and the second claw 122 are used to clamp the aerosol generating product 2, thereby clamping both ends of the aerosol generating product 2 so that the central axis of the aerosol generating product 2 coincides with the central axis of the heating tube 11. This allows the heating tube 11 to uniformly heat the aerosol generating product 2 and maintain a good suction feel. In addition, the clamping of the aerosol generating product 2 by the first claw 141 and the second claw 122 helps to disperse the clamping force on the aerosol generating product 2, reduce the deformation of the outer surface of the aerosol generating product 2, and reduce the risk of debris and breakage when pulling out the aerosol generating product 2. This reduces the frequency of cleaning the heating assembly 1 and improves the user experience.

[0050] In some embodiments, please refer to Figure 6 The first end cap 12 is provided with a support rib 123 for supporting the aerosol generating product 2. The support rib 123 and the second claw 122 are offset and placed on the side wall of the second receiving groove 121. A first airflow channel 124 is defined between the support rib 123 and the second claw 122. The first airflow channel 124 is connected to the first gap. The support rib 123 is used to support the aerosol generating product 2 to separate the bottom of the second receiving groove 121 and the bottom of the aerosol generating product 2, thereby forming a second gap between the bottom of the second receiving groove 121 and the bottom of the aerosol generating product 2, so that the external airflow flows through the first gap and the first airflow channel 124 to the bottom of the aerosol generating product 2, thereby entering the aerosol generating product 2.

[0051] In some embodiments, please refer to Figure 6 and Figure 7 The clamping member 14 is generally hollow cylindrical in shape. The first claw 141 includes multiple first claw portions 1411, which are spaced apart and arranged around the inner wall of the clamping member 14. A second airflow channel 142 is defined between two adjacent first claw portions 1411. The second claw 122 includes multiple second claw portions 1221, and the support rib 123 includes multiple rib portions 1231. The multiple second claw portions 1221 and the multiple rib portions 1231 are all spaced apart and arranged around the inner wall of the clamping member 14. The second claw portion 1221 and the rib portion 1231 are staggered. The first airflow channel 124 is defined by the adjacent second claw portion 1221 and rib portion 1231. When the aerosol generating product 2 is inserted into the heating tube 11, the opening 132 and the second receiving groove 121, there is a third gap between the inner side wall of the heating tube 11 and the outer side wall of the aerosol generating product 2. The third gap connects the second airflow channel 142 and the first gap, so that the external airflow flows through the second airflow channel 142 and the third gap to the first gap.

[0052] In some embodiments, the rib 1231 is disposed on the second claw portion 1221, and the first airflow channel 124 is defined by two adjacent second claw portions 1221.

[0053] In some embodiments, please refer to Figures 4-6 The first sealing element 13 is supported on the end face of the first end cap 12 facing the heating element 11. The first sealing element 13 is provided with a fixing groove 133, and the first end cap 12 is provided with a fixing part 125, which is inserted into the fixing groove 133. By the fixing part 125 being inserted into the fixing groove 133, the surface of the first sealing element 13 facing the first end cap 12 abuts against the end face of the first end cap 12 facing the heating element 11, thereby making the first sealing element 13 stably supported on the first end cap 12.

[0054] In some embodiments, please refer to Figures 3-5 The first sealing member 13 is provided with at least one partition 134, which divides the fixing groove 133 into multiple grooves. The partition 134 is provided with a first wire hole 1341 through which the electrode lead of the heating tube 11 passes. And / or, the heating assembly 1 includes a temperature sensor 15 for detecting the temperature of the heating tube 11, and the partition 134 is provided with a second wire hole 1342 through which the electrode lead of the temperature sensor 15 passes.

[0055] In some embodiments, the fixing part 125 is provided with a first notch 1251 through which the electrode lead of the heating tube 11 passes, and / or, the fixing part 125 is provided with a second notch through which the electrode lead of the temperature sensor 15 passes.

[0056] In some embodiments, the heating assembly 1 further includes a second end cap 16, a second seal 17, and a heat insulation tube 18. The second end cap 16 is generally hollow cylindrical in shape and supports the clamping member 14. The second seal 17 is supported on the end of the heating tube 11 away from the first end cap 12 and seals the gap between the second end cap 16 and the heating tube 11. The heat insulation tube 18 is sleeved on the first end cap 12, the first seal 13, the heating tube 11, the second seal 17, and the second end cap 16. The heat insulation tube 18, the first seal 13, the second seal 17, the second end cap 16, and the heating tube 11 define a receiving cavity 19. The receiving cavity 19 is connected to the first wire hole 1341 and / or the receiving cavity 19 is connected to the second wire hole 1342.

[0057] In some embodiments, along the direction from the heating tube 11 to the first end cap 12, the cross-sectional area of ​​the first wire hole 1341 is larger than the cross-sectional area of ​​the electrode lead of the heating tube 11, and / or the cross-sectional area of ​​the second wire hole 1342 is larger than the cross-sectional area of ​​the electrode lead of the temperature sensor 15, so that the accommodating cavity 19 is connected to the outside through the first wire hole 1341 and / or the second wire hole 1342, preventing the air pressure in the accommodating cavity 19 from changing drastically, thereby preventing aerosols and condensates from being drawn into the accommodating cavity 19.

[0058] In some embodiments, please refer to Figure 2 and Figure 3 The heating assembly 1 also includes a heat insulation component 1a and a fixing component 1b. The heat insulation component 1a is sleeved on the heating tube 11 and the temperature sensor 15, and the fixing component 1b surrounds the heat insulation component 1a to fix the heat insulation component 1a on the heating tube 11.

[0059] This utility model also provides an embodiment of an aerosol generating device, which includes the heating component 1 described above. The structure and function of the heating component 1 can be found in the above embodiments, and will not be repeated here.

[0060] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A heating assembly, characterized in that, include: A heating element is used to contain at least a portion of an aerosol-generating article and to heat the aerosol-generating article to generate an aerosol. The first end cap is used to provide support for the aerosol-generated article; A first sealing element is supported on the first end cap. The first sealing element is provided with a first receiving groove, which receives a portion of the heating element. The bottom of the first receiving groove seals the end face of the heating element, and the side wall of the first receiving groove seals the outer side wall of the heating element.

2. The heating assembly according to claim 1, characterized in that, The bottom of the first receiving groove is provided with an opening, and the first end cap is provided with a second receiving groove. The opening connects the heating tube and the second receiving groove, and the opening and the second receiving groove are used for the insertion of the aerosol generating product.

3. The heating assembly according to claim 2, characterized in that, The heating assembly includes a clamping member connected to the end of the heating tube away from the first end cap. The clamping member is provided with a first claw, and the first end cap is provided with a second claw. The first claw and the second claw are used to clamp the aerosol-generating product.

4. The heating assembly according to claim 1, characterized in that, The heating element has a wall thickness of no more than 0.8 mm.

5. The heating assembly according to claim 2, characterized in that, Along the direction from the heating tube toward the first end cap, the cross-sectional area of ​​the opening gradually increases, and the diameter of the end of the opening facing the heating tube is larger than the inner diameter of the heating tube.

6. The heating assembly according to claim 5, characterized in that, The diameter of the end of the opening facing the heating element is 0.05-0.5 mm greater than the inner diameter of the heating element.

7. The heating assembly according to claim 3, characterized in that, The first end cap is provided with a support rib for supporting the aerosol generating product. The support rib and the second claw are staggered and disposed on the side wall of the second receiving groove. A first airflow channel is defined between the support rib and the second claw.

8. The heating assembly according to claim 3, characterized in that, The first sealing member is supported on the end face of the first end cap facing the heating tube. The first sealing member is provided with a fixing groove, and the first end cap is provided with a fixing part, which is inserted into the fixing groove.

9. The heating assembly according to claim 8, characterized in that, The first sealing element is provided with at least one partition portion that separates the fixing groove. The partition portion is provided with a first wire passage hole for the electrode lead of the heating element to pass through. And / or, the heating assembly includes a temperature sensor for detecting the temperature of the heating element, and the partition portion is provided with a second wire passage hole for the electrode lead of the temperature sensor to pass through.

10. An aerosol generating device, characterized in that, Includes the heating component as described in any one of claims 1-9.

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