Aerosol generating device and aerosol generating rod heating assembly

Abstract

The utility model relates to the technical field of aerosol generating devices, in particular to an aerosol generating device capable of carrying out airflow heating on the center of an aerosol generating rod and an aerosol generating rod heating assembly. The first heating pipe of the heating assembly heats the outer wall of the aerosol generating rod, the inner hole of the second heating pipe allows the airflow to pass through, the airflow enters the aerosol generating rod to be heated after being heated, the hot airflow is heated more evenly after entering the aerosol generating rod, and the problem that at present, aerosol is heated unevenly during heating can be solved. The generation rod abutting end of the second heating pipe directly abuts against the end of the aerosol generation rod, heated airflow can directly enter the aerosol generation rod, airflow leakage is reduced, and meanwhile heat loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of aerosol generating devices, in particular to an aerosol generating device capable of performing airflow heating on the center of an aerosol generating rod and an aerosol generating rod heating component. Background Art

[0002] The aerosol generating device is used to heat the aerosol generating rod. The aerosol generating rod is heated to generate aerosol for the user to inhale. The aerosol generating rod is inserted into the heating tube of the aerosol generating device. The inner surface of the heating tube is in contact with the outer surface of the aerosol generating rod, and the aerosol generating rod is heated by heat conduction. Since the thermal conductivity of the aerosol generating rod itself is low, when the aerosol generating rod is heated by the current heating method, the central part cannot be fully heated, the aerosol generating rod is heated unevenly, and the aerosol generated by the aerosol generating rod has poor aroma consistency. Utility Model Content

[0003] The utility model provides an aerosol generating rod heating component, which is used to improve the current technical problem of poor aroma consistency caused by uneven heating when the aerosol generating rod is heated.

[0004] In addition, the utility model also provides an aerosol generating device using the aerosol generating rod heating assembly.

[0005] In a first aspect, an embodiment provides an aerosol generating rod heating assembly, wherein the aerosol generating rod heating assembly has a receiving cavity for inserting the aerosol generating rod, and the aerosol generating rod heating assembly includes a first heating tube and a second heating tube;

[0006] The first heating tube surrounds at least a portion of the receiving cavity, and the first heating tube is used for thermally contacting the side wall of the aerosol generating rod;

[0007] The tube hole of the second heating tube is used for air flow to pass through so as to heat the air flow entering the aerosol generating rod; one end of the second heating tube is the generating rod abutting end, and the generating rod abutting end is used to abut against the air inlet end of the aerosol generating rod, and the generating rod abutting end is communicated with the accommodating cavity so that the air flow heated by the second heating tube can enter the aerosol generating rod from the generating rod abutting end.

[0008] Furthermore, in one embodiment, the second heating tube extends into the first heating tube, the second heating tube includes an extending section, and the generating rod abutting end is located at the end of the extending section.

[0009] Furthermore, in one embodiment, there is an annular gap between the extending section and the inner wall of the first heating tube.

[0010] Furthermore, in one embodiment, the aerosol generating rod heating assembly includes a mounting seat, one end of the second heating tube is a mounting end inserted into the mounting seat, and the other end is the generating rod contact end, one end of the second heating tube is inserted into the mounting seat, and the mounting end is outside the second heating tube.

[0011] Furthermore, in one embodiment, the second heating tube includes a second tube body and a second resistance heating element exposed in the second tube body, and the second resistance heating element is used to heat the airflow entering the second heating tube.

[0012] Furthermore, in one embodiment, the second resistive heating element is a spiral heating wire or a heating tube disposed in the second tube body.

[0013] Furthermore, in one embodiment, the first heating tube and the second heating tube are coaxially arranged.

[0014] Furthermore, in one embodiment, the aerosol generating rod heating assembly includes a component circuit, and the first heating tube and the second heating tube are both connected to the component circuit, and the component circuit can supply power to any one of the first heating tube and the second heating tube separately, so that the first heating tube and the second heating tube can generate heat independently.

[0015] Furthermore, in one embodiment, the aerosol generating rod heating component includes a suction sensing element and a component circuit, the first heating tube and the second heating tube are both connected to the component circuit, the suction sensing element can sense whether the aerosol generating rod is sucked, the suction sensing element is connected to the component circuit, and the component circuit supplies power to the first heating tube and / or the second heating tube in response to the sensing result of the suction sensing element.

[0016] In a second aspect, an embodiment provides an aerosol generating device, comprising a housing and an aerosol generating rod heating assembly, wherein the aerosol generating rod heating assembly is disposed in the housing;

[0017] The aerosol generating rod heating assembly has a receiving cavity for inserting the aerosol generating rod, and the aerosol generating rod heating assembly includes a first heating tube and a second heating tube;

[0018] The first heating tube surrounds at least a portion of the receiving cavity, and the first heating tube is used for thermally contacting the side wall of the aerosol generating rod;

[0019] The tube hole of the second heating tube is used for air flow to pass through so as to heat the air flow entering the aerosol generating rod; one end of the second heating tube is the generating rod abutting end, and the generating rod abutting end is used to abut against the air inlet end of the aerosol generating rod, and the generating rod abutting end is communicated with the accommodating cavity so that the air flow heated by the second heating tube can enter the aerosol generating rod from the generating rod abutting end.

[0020] Furthermore, in one embodiment, the second heating tube extends into the first heating tube, the second heating tube includes an extending section, and the generating rod abutting end is located at the end of the extending section.

[0021] Furthermore, in one embodiment, there is an annular gap between the extending section and the inner wall of the first heating tube.

[0022] Furthermore, in one embodiment, the aerosol generating rod heating assembly includes a mounting seat, one end of the second heating tube is a mounting end inserted into the mounting seat, and the other end is the generating rod contact end, one end of the second heating tube is inserted into the mounting seat, and the mounting end is outside the second heating tube.

[0023] Furthermore, in one embodiment, the second heating tube includes a second tube body and a second resistance heating element exposed in the second tube body, and the second resistance heating element is used to heat the airflow entering the second heating tube.

[0024] Furthermore, in one embodiment, the second resistive heating element is a spiral heating wire or a heating tube disposed in the second tube body.

[0025] Furthermore, in one embodiment, the first heating tube and the second heating tube are coaxially arranged.

[0026] Furthermore, in one embodiment, the aerosol generating rod heating assembly includes a component circuit, and the first heating tube and the second heating tube are both connected to the component circuit, and the component circuit can supply power to any one of the first heating tube and the second heating tube separately, so that the first heating tube and the second heating tube can generate heat independently.

[0027] Furthermore, in one embodiment, the aerosol generating rod heating component includes a suction sensing element and a component circuit, the first heating tube and the second heating tube are both connected to the component circuit, the suction sensing element can sense whether the aerosol generating rod is sucked, the suction sensing element is connected to the component circuit, and the component circuit supplies power to the first heating tube and / or the second heating tube in response to the sensing result of the suction sensing element.

[0028] According to the aerosol generating rod heating assembly of the above embodiment, the first heating tube of the heating assembly heats the outer wall of the aerosol generating rod, and the inner hole of the second heating tube allows airflow to pass through, so that the airflow is heated and then enters the interior of the aerosol generating rod for heating. After the hot airflow enters the aerosol generating rod, the heating is more uniform, which can improve the current problem of uneven heating during aerosol heating. The generating rod contact end of the second heating tube directly contacts the end of the aerosol generating rod, so that the heated airflow can directly enter the aerosol generating rod, reducing airflow leakage and heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of an aerosol generating device in an embodiment;

[0030] Figure 2 is a cross-sectional view of an aerosol generating device in one embodiment;

[0031] Figure 3 is a cross-sectional view of an aerosol generating rod heating assembly in one embodiment;

[0032] Figure 4 This is a schematic diagram of the structure of a first heating tube in an embodiment;

[0033] Figure 5 Schematic diagram of the structure of the second heating tube in an embodiment.

[0034] List of feature names corresponding to the figure marks in the figure: 1. aerosol generating rod; 11. nozzle end; 12. air inlet end; 2. shell; 3. aerosol generating rod heating component; 31. accommodating chamber; 32. first heating tube; 321. heat conducting tube; 322. heating film; 33. second heating tube; 331. generating rod contact end; 332. second tube body; 333. second resistive heating element; 334. insertion section; 335. mounting end; 34. annular spacer; 35. mounting seat; 351. seat hole; 36. first sealing ring; 37. heating tube bracket; 371. bracket hole; 372. protective cover; 373. annular insulation spacer; 374. aluminum foil tube; 38. second sealing ring; 39. third sealing ring; 301. cover; 302. suction sensor; 4. power supply; 5. airway bracket; 51. airway; 6. oil-absorbing cotton; 7. circuit board; 8. button. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0036] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0037] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0038] Please refer to Figure 1 and Figure 2 Before introducing the heating component in detail, the heating object of the aerosol generating rod heating component, i.e., the aerosol generating rod 1, is first explained. One end of the aerosol generating rod 1 is a nozzle end 11, and the other end is an air inlet end 12. The nozzle end 11 has a nozzle for suction, and the air inlet end 12 is used to supply gas to enter the aerosol generating rod 1 when the aerosol generating rod 1 is sucked. The aerosol generating rod 1 contains an aerosol generating matrix, and the nozzle contains a filter element (not shown in the figure). The filter element (not shown in the figure) can adopt various existing or future feasible methods, such as sponge, filter paper, etc. The aerosol generating matrix is ​​an aerosol filament or aerosol sheet for generating aerosol.

[0039] The aerosol generating rod 1 is a heat-not-burn rod. The aerosol generating rod 1 is heated by an aerosol generating device without burning the aerosol generating rod 1. The aerosol generating rod 1 can generate aerosol after being heated.

[0040] In one embodiment, please refer to Figures 1 to 3The aerosol generating device comprises a housing 2 and an aerosol generating rod heating assembly 3, wherein the aerosol generating rod heating assembly 3 is disposed in the housing 2. A power source 4 for supplying power to the aerosol generating rod heating assembly 3 is provided in the housing 2. Specifically, in one embodiment, the power source 4 comprises a battery for supplying power to the aerosol generating rod heating assembly 3.

[0041] In one embodiment, please refer to Figures 1 to 5 The aerosol generating rod heating assembly has a receiving cavity 31 for inserting the aerosol generating rod. The air inlet end 12 of the aerosol generating rod 1 is inserted into the receiving cavity 31, and the mouthpiece end 11 is exposed outside the receiving cavity 31 for the user to inhale.

[0042] The aerosol generating rod heating assembly 3 comprises a first heating tube 32 and a second heating tube 33 , wherein the first heating tube 32 encloses at least a portion of the accommodating cavity 31 , and the first heating tube 32 is used for thermally contacting the side wall of the aerosol generating rod 1 .

[0043] The tube hole of the second heating tube 33 allows airflow to pass through, so as to heat the airflow entering the aerosol generating rod 1. One end of the second heating tube 33 is a generating rod abutting end 331, which is used to abut against the air inlet end of the aerosol generating rod 1, and the generating rod abutting end 331 is communicated with the receiving cavity 31, so that the airflow heated by the second heating tube 33 enters the aerosol generating rod 1 from the generating rod abutting end 331.

[0044] In the present application, the first heating tube 32 of the aerosol generating rod heating assembly 3 is used for thermal contact with the outer wall of the aerosol generating rod 1, and can heat the outer wall of the aerosol generating rod 1. The inner hole of the second heating tube 33 is used for airflow to pass through, and can heat the airflow to enter the inside of the aerosol generating rod 1, so that the heated hot airflow enters the aerosol generating rod 1, so that the inside and outside of the aerosol generating rod 1 can be heated, and the overall heating is more uniform, which can improve the current problem of uneven heating during aerosol heating. The generating rod abutting end 331 of the second heating tube 33 directly abuts against the end of the aerosol generating rod 1, so that the heated airflow can directly enter the aerosol generating rod 1, reducing the leakage of the airflow, and also reducing the loss of heat.

[0045] The first heating tube 32 may adopt any feasible heating method. For example, in one embodiment, please refer to Figure 4, the first heating tube 32 includes a heat-conducting tube 321 and a heating film 322 covering the outer wall of the heat-conducting tube 321. The heating film 322 generates heat after being energized, and the heat-conducting tube 321 can transfer the heat to the aerosol generating rod 1 after being heated up. For another example, in one embodiment, a heating wire can also be surrounded outside the heat-conducting tube 321, and the heating wire generates heat after being energized. For another example, in one embodiment, in addition to surrounding the heating wire outside the heat-conducting tube 321, a heating wire can also be embedded in the heat-conducting tube 321. For another example, in one embodiment, a heating wire or a heating film can also be covered on the inner wall of the heat-conducting tube 321. For another example, in one embodiment, in addition to the combination of the above-mentioned heat-conducting tube 321 and the heating element, the first heating tube 32 can also adopt an integrally formed resistance heating element, such as a conductive ceramic tube, a carbon tube, etc. For another example, in one embodiment, the first heating tube 32 can also adopt a magnetic induction heating tube.

[0046] Regarding the second heating tube 33, in one embodiment, please refer to Figure 2 and Figure 5 The second heating tube 33 includes a second tube body 332 and a second resistance heating element 333 exposed in the second tube body 332, and the second resistance heating element 333 is used to heat the airflow entering the second heating tube 33. The second resistance heating element 333 is arranged in the second tube body 332, and can directly heat the airflow, and the heating efficiency is higher. Furthermore, in one embodiment, the second resistance heating element 333 is a spiral heating wire arranged in the second tube body 332. The spiral heating wire occupies a small space in the tube and has a good effect on heating the airflow. During installation, the spiral heating wire can be installed in the second tube body 332 as a whole, and the installation is also more convenient. In one embodiment, the second resistance heating element 333 is a heating tube, and the heating tube is rolled into a tube shape by a heating net or a heating plate and then inserted into the tube hole of the second tube body 332.

[0047] In some other embodiments, the second heating tube 33 may also adopt the same structure as the first heating tube 32 in the above embodiment.

[0048] Furthermore, in one embodiment, in order to improve the heating effect, the second tube body 332 is made of a heat insulating material, such as a ceramic tube. Of course, in one embodiment, it is also feasible for the second tube body 332 to use a heat conducting tube 321 .

[0049] In one embodiment, please refer to Figure 2 and Figure 3In order to improve the heating effect of the airflow, the second heating tube 33 extends into the first heating tube 32, and the second heating tube 33 includes an extending section 334, and the generating rod contact end 331 is located at the end of the extending section 334. Since the extending section 334 is located in the first heating tube 32, the heat dissipation of the outer periphery of the extending section 334 is slow, so that the temperature in the extending section 334 can be higher. The temperature of the airflow gradually increases from entering the second heating tube 33 to flowing out of the second heating tube 33. The higher temperature of the extending section 334 can increase the temperature difference between the second heating tube 33 and the airflow, thereby improving the heating speed of the airflow.

[0050] Further, in one embodiment, please refer to Figure 2 and Figure 3 There is an annular spacer 34 between the extending section 334 and the inner wall of the first heating tube 32. Compared with the direct contact between the extending section 334 and the first heating tube 32, the annular spacer 34 can reduce the heat transfer speed between the first heating tube 32 and the second heating tube 33, thereby increasing the temperature of the extending section 334 and improving the heating efficiency of the airflow.

[0051] In some other embodiments, in addition to extending into the first heating tube 32 , the second heating tube 33 may also be spaced apart from or connected to the first heating tube 32 in the length direction of the first heating tube 32 .

[0052] In one embodiment, please refer to Figure 2 and Figure 3 In order to facilitate the installation of the first heating tube 32 and the second heating tube 33, the aerosol generating rod heating assembly 3 includes a mounting seat 35, one end of the second heating tube 33 is a mounting end 335 inserted on the mounting seat 35, and the other end is a generating rod contact end 331, one end of the second heating tube 33 is inserted on the mounting seat 35, and the mounting end 335 is outside the second heating tube 33. In this way, the first heating tube 32 and the second heating tube 33 are both inserted on the mounting seat 35, with a unified installation reference, which makes it easier to ensure the relative position of the two during installation, and facilitates installation. In some other embodiments, according to actual needs, the first heating tube 32 and the second heating tube 33 can also be installed using different installation references.

[0053] Specifically, in one embodiment, please refer to Figure 2 and Figure 3 A first sealing ring 36 is provided between the first heating tube 32 and the mounting seat 35, and the second heating tube 33 is interference-fitted on the mounting seat 35. The mounting seat 35 has a seat hole 351 connected to the inner hole of the second heating tube 33, and the seat hole 351 is for airflow to pass through.

[0054] In one embodiment, the aerosol generating rod heating assembly 3 includes a heating tube support 37, and the first heating tube 32 is clamped between the heating tube support 37 and the mounting seat 35. The heating tube support 37 has a support hole 371, and the support hole 371 forms a part of the receiving cavity 31. When the aerosol generating rod 1 is inserted into the receiving cavity 31, it enters the first heating tube 32 after being inserted into the support hole 371. The heating tube support 37 includes a protective sleeve 372 located at the outer periphery of the first heating tube 32, and the protective sleeve 372 is arranged at intervals with the first heating tube 32 to form an annular heat insulation interval 373, and the annular heat insulation interval 373 can slow down the heat spillover of the first heating tube 32. In order to further slow down the heat loss of the first heating tube 32, an aluminum foil tube 374 is provided on the inner side of the protective sleeve 372, and the aluminum foil tube 374 can reduce the heat radiation of the first heating tube 32 to the outside. The mounting seat 35 is plug-fitted with the protective sleeve 372, and a second sealing ring 38 is provided between the mounting seat 35 and the protective sleeve 372.

[0055] In one embodiment, please refer to Figure 2 and Figure 3 A third sealing ring 39 is provided at one end of the bracket hole 371 for inserting the aerosol generating rod 1, and the third sealing ring 39 is in sealing contact with the outer wall surface of the aerosol generating rod 1. In order to maintain the stability of the third sealing ring 39, a cover 301 is installed on the heating tube bracket 37. In one embodiment, an airway bracket 5 is provided in the outer shell 2, and an airway 51 for airflow is provided in the airway bracket 5, and the airway 51 is communicated with the seat hole 351. In one embodiment, the bottom of the outer shell 2 has an outer shell hole that conducts the outside world and the airway 51, and an oil-absorbing cotton 6 is provided at the outer shell hole. The oil-absorbing cotton 6 is used to absorb the oil after the aerosol is condensed, and can prevent foreign matter such as dust from entering the airway 51 from the bottom of the outer shell 2.

[0056] In one embodiment, please refer to Figure 2 and Figure 3 In order to further facilitate the installation of the first heating tube 32 and the second heating tube 33, the first heating tube 32 and the second heating tube 33 are coaxially arranged. This also facilitates the tube hole of the second heating tube 33 to face the center of the aerosol generating rod 1, thereby achieving more uniform heating of the aerosol generating rod 1. In some other embodiments, the first heating tube 32 and the second heating tube 33 can also be eccentrically arranged.

[0057] In order to be applicable to more usage scenarios, in one embodiment, the aerosol generating rod heating component 3 includes a component circuit (not shown in the figure), the first heating tube 32 and the second heating tube 33 are both connected to the component circuit, and the component circuit can supply power to any one of the first heating tube 32 and the second heating tube 33 separately. Specifically, in one embodiment, the component circuit includes a conduction circuit and a control circuit, the first heating tube 32 and the second heating tube 33 are connected to the power supply 4 through the conduction circuit, and the control circuit controls the on-off of the circuit between the first heating tube 32 and the power supply 4, and also controls the on-off of the circuit between the second heating tube 33 and the power supply 4.

[0058] Regarding the control of the power supply of the component circuit, in one embodiment, the aerosol generating rod heating component 3 includes a suction sensing member 302, which can sense whether the aerosol generating rod 1 is being sucked, and the suction sensing member 302 is connected to the component circuit, and the component circuit supplies power to the first heating tube 32 and / or the second heating tube 33 in response to the sensing result of the suction sensing member 302. In one embodiment, the suction sensing member 302 can be a sensor, and the sensing result of the suction sensing member 302 can be an electrical signal emitted after the target data is detected. In another embodiment, the suction sensing member 302 can also be an induction switch, which directly disconnects or connects the operation of the component circuit in response to the suction result of the aerosol generating device.

[0059] In one embodiment, the suction sensing element 302 is an air pressure sensor, which can sense the change of gas pressure in the second heating tube 33. The air pressure sensor is connected to the component circuit. After the gas pressure in the second heating tube 33 is reduced to the target value, the air pressure sensor sends a connection signal, and the component circuit responds to the connection signal to connect the power supply circuit of the second heating tube 33. When the gas pressure in the second heating tube 33 is not reduced to the target value, the component circuit responds to the air pressure sensor to keep the power supply circuit of the second heating tube 33 disconnected. Specifically, in one embodiment, the suction sensing element 302 is an air pressure sensor. There is a circuit board 7 in the housing 2, and the suction sensing element 302 is mounted on the circuit board 7.

[0060] Specifically, the component circuit can adopt any feasible response mode, for example, the component circuit includes a circuit switch and a controller, the controller is connected to the suction sensing member 302, and after the sensing signal of the suction sensing member 302 is transmitted to the controller, the controller can control the on and off of the circuit switch, thereby controlling the component circuit to supply power to the first heating tube 32 and / or the second heating tube 33. In one embodiment, the number of the circuit switch can be one, in which case the circuit switch controls the supply of power to both the first heating tube 32 and the second heating tube 33, or controls the supply of power to one of the first heating tube 32 and the second heating tube 33.

[0061] In one embodiment, the number of circuit switches can also be two, and the two circuit switches correspond one to one with the first heating tube 32 and the second heating tube 33. When the controller controls the circuit switch corresponding to the first heating tube 32 to be turned on, the second heating tube 33 starts to work. When the controller controls the circuit switch corresponding to the second heating tube 33 to be turned on, the second heating tube 33 starts to work. At this time, the first heating tube 32 and the second heating tube 33 can work independently to generate heat.

[0062] In one embodiment, the heating component also includes a temperature sensor for detecting the temperature of the aerosol generating rod 1. The temperature sensor is connected to the controller to send a signal to the controller. When the aerosol generating rod 1 is inserted into the receiving cavity 31 and the temperature has not reached the set temperature, the controller receives the signal from the temperature sensor to control the circuit switch corresponding to the first heating tube 32 to be turned on, thereby preheating the aerosol generating rod 1 through the first heating tube 32.

[0063] The working principle of an aerosol generating device is described as follows: Figures 1 to 3 , the user presses the button 8 to make the first heating tube 32 preheat the aerosol generating rod 1. After preheating to a certain temperature (about 150° to 200°), the first heating tube 32 stops heating, and the aerosol generating device prompts the user to inhale (through light or motor vibration). When the suction sensing element 302 senses that the user inhales the aerosol generating rod 1, the component circuit controls the second heating tube 33 to heat up, and the airflow heated by the second heating tube 33 bakes the aerosol generating rod 1 (the hot airflow temperature is about 200° to 400°) and forms smoke. When the user stops inhaling, the second heating tube 33 stops heating according to the sensing result of the suction sensing element 302. When the second heating tube 33 heats up, the control logic can be set as needed to make the first heating tube 32 and the second heating tube 33 heat up at the same time, or the first heating tube 32 does not heat up, and only the second heating tube 33 heats up.

[0064] In an embodiment of an aerosol generating rod heating assembly, the structure of the aerosol generating rod heating assembly is the same as the structure of the aerosol generating rod heating assembly 3 in any of the above embodiments, and will not be described in detail.

[0065] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. An aerosol generating rod heating assembly, characterized in that: The aerosol generating rod heating assembly has a receiving cavity for inserting the aerosol generating rod, and the aerosol generating rod heating assembly includes a first heating tube and a second heating tube; The first heating tube surrounds at least a portion of the receiving cavity, and the first heating tube is used for thermally contacting the side wall of the aerosol generating rod; The tube hole of the second heating tube is used for air flow to pass through so as to heat the air flow entering the aerosol generating rod; one end of the second heating tube is the generating rod abutting end, and the generating rod abutting end is used to abut against the air inlet end of the aerosol generating rod, and the generating rod abutting end is communicated with the accommodating cavity so that the air flow heated by the second heating tube can enter the aerosol generating rod from the generating rod abutting end.

2. The aerosol generating rod heating assembly according to claim 1, characterized in that The second heating tube extends into the first heating tube, the second heating tube comprises an extending section, and the generating rod abutting end is located at the end of the extending section.

3. The aerosol generating rod heating assembly according to claim 2, characterized in that: An annular gap is provided between the extending section and the inner wall of the first heating tube.

4. The aerosol generating rod heating assembly according to claim 2, characterized in that: The aerosol generating rod heating assembly includes a mounting seat, one end of the second heating tube is a mounting end inserted on the mounting seat, and the other end is the generating rod abutment end, one end of the second heating tube is inserted on the mounting seat, and the mounting end is outside the second heating tube.

5. The aerosol generating rod heating assembly according to any one of claims 1 to 4, characterized in that: The second heating tube includes a second tube body and a second resistance heating element exposed in the second tube body, and the second resistance heating element is used for heating the airflow entering the second heating tube.

6. The aerosol generating rod heating assembly according to claim 5, characterized in that The second resistance heating element is a spiral heating wire or a heating tube arranged in the second tube body.

7. The aerosol generating rod heating assembly according to any one of claims 1 to 4, characterized in that: The first heating tube and the second heating tube are coaxially arranged.

8. The aerosol generating rod heating assembly according to any one of claims 1 to 4, characterized in that: The aerosol generating rod heating component includes a component circuit, and the first heating tube and the second heating tube are both connected to the component circuit. The component circuit can supply power to any one of the first heating tube and the second heating tube separately so that the first heating tube and the second heating tube can generate heat independently.

9. The aerosol generating rod heating assembly according to any one of claims 1 to 4, characterized in that: The aerosol generating rod heating component includes a suction sensing element and a component circuit. The first heating tube and the second heating tube are both connected to the component circuit. The suction sensing element can sense whether the aerosol generating rod is sucked. The suction sensing element is connected to the component circuit. The component circuit supplies power to the first heating tube and / or the second heating tube in response to the sensing result of the suction sensing element.

10. An aerosol generating device, characterized in that: It comprises a housing and an aerosol generating rod heating assembly as claimed in any one of claims 1 to 9, wherein the aerosol generating rod heating assembly is arranged in the housing.

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