Aerosol generating assembly and heat-not-burn device

Abstract

The utility model relates to the technical field of aerosol generating equipment, in particular to an aerosol generating assembly and a heat-not-burn device, the aerosol generating assembly comprises a heating section, the heating section is provided with a heating cavity, and the heating cavity is used for containing and heating an aerosol matrix to generate aerosol; the suction nozzle section is provided with a suction air channel, the suction air channel is communicated with the heating cavity, the suction air channel comprises a first air channel section and a second air channel section, the first air channel section is operably communicated with the heating cavity so as to collect aerosol generated in the heating cavity, and the second air channel section is communicated with the heating cavity through the first air channel section so as to collect aerosol generated in the heating cavity; the inner diameter of the second air channel section is smaller than that of the first air channel section. During suction, aerosol generated in the heating cavity is firstly collected and cooled by the first air passage section and then sucked out in an accelerated manner through the second air passage section, and the accelerated suction contributes to collision of aerosol particles, so that cooling is accelerated, and the problem that the temperature of the sucked-out aerosol is relatively high is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aerosol generating equipment, in particular to an aerosol generating assembly and a heat-not-burn device. BACKGROUND

[0002] The heat-not-burn device generates aerosol by heating an aerosol generating article, which usually has a smoking section, a cooling section and a filter section. The smoking section is heated to generate aerosol, and the generated aerosol is cooled by the space of the cooling section.

[0003] The cooling section of the aerosol generating article often adopts a regular hollow paper tube. Since the cross-sectional shape of the paper tube is regular and the area is large, the flow rate of the aerosol passing through the cooling section is reduced, and the cooling effect is not obvious, so there is still a risk of scalding when smoking. CONTENT OF THE UTILITY MODEL

[0004] The present application mainly aims to improve the problem of high temperature of the inhaled aerosol, and provides an aerosol generating assembly and a heat-not-burn device.

[0005] According to a first aspect, an aerosol generating assembly is provided in an embodiment, comprising:

[0006] a heating section having a heating cavity for accommodating and heating an aerosol substrate to generate aerosol;

[0007] and a mouthpiece section having a suction air channel, the suction air channel being in communication with the heating cavity, the suction air channel comprising a first air channel section and a second air channel section, the first air channel section being operable in communication with the heating cavity to collect the aerosol generated in the heating cavity, the second air channel section being in communication with the heating cavity through the first air channel section, the inner diameter of the second air channel section being smaller than the inner diameter of the first air channel section.

[0008] In an embodiment, a side wall air supply port is provided on the air channel side wall of the first air channel section, the side wall air supply port being used for supplying gas outside the mouthpiece section into the first air channel to mix with the aerosol sucked into the first air channel.

[0009] In an embodiment, the mouthpiece section comprises a gas supply cavity provided outside the air channel side wall of the suction air channel and extending in the same direction as the axial direction of the suction air channel, and an air inlet is provided on the outer wall surface of the mouthpiece section, the air inlet and the side wall air supply port being in communication with the gas supply cavity.

[0010] In an embodiment, the side wall air supply port is arranged on the side of the first air channel section close to the heating cavity.

[0011] In one embodiment, the suction air passage further comprises a third air passage section connected to the second air passage section at an end away from the first air passage section, and the air inlet is arranged on the periphery of the third air passage section.

[0012] In one embodiment, the suction nozzle section is in a cylindrical structure, the air supply cavity is a sandwiched space arranged along the circumference of the suction nozzle section, and the side wall air supply port is arranged at least two spaced apart along the circumference of the sandwiched space.

[0013] In one embodiment, the air supply cavity is arranged around the suction air passage, the air inlet is arranged at least two spaced apart along the circumference of the outer wall of the suction nozzle section, and the number of air inlets is not less than the number of side wall air supply ports.

[0014] In one embodiment, the side wall air supply port is configured to have a flow rate of 17.5ml / s-30ml / s when suctioning through the side wall air supply port.

[0015] In one embodiment, a one-way air inlet structure is arranged on the air supply passage corresponding to the side wall air supply port, and the one-way air inlet structure is used for the gas outside the suction nozzle section to flow into the first air passage section unidirectionally.

[0016] According to the second aspect, in one embodiment, a heating non-combustion device is provided, comprising:

[0017] a host;

[0018] and the aerosol generating assembly of any one of the above embodiments is arranged in the host.

[0019] According to the aerosol generating assembly and the heating non-combustion device of the above embodiments, the aerosol generating assembly comprises a heating section and a suction nozzle section, the suction nozzle section has a suction air passage comprising a first air passage section and a second air passage section, the second air passage section is in communication with the heating cavity of the heating section through the first air passage section, and the inner diameter of the second air passage section is smaller than the inner diameter of the first air passage section; when suctioning, the aerosol generated in the heating cavity is first collected and cooled by the first air passage section, and then is accelerated to be sucked out through the second air passage section, which helps to accelerate the collision of aerosol particles to accelerate the cooling and improve the uniformity of aerosol particle agglomeration, and through the cooperation of the first air passage section and the second air passage section, it helps to improve the problem of high temperature of the sucked out aerosol. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of an aerosol generating assembly of one embodiment;

[0021] Figure 2 is a partial structural schematic diagram of a heating non-combustion device of one embodiment.

[0022] In the figure, 100, heating section; 110, heating cavity; 120, air guide sandwich; 121, air outlet;

[0023] 200, mouthpiece section; 210, suction airway; 211, first airway section; 2111, first variable diameter part; 212, second airway section; 213, third airway section; 2131, second variable diameter part; 220, side wall air supply port; 230, air supply cavity; 240, air inlet; 250, suction port; 260, one-way air inlet structure;

[0024] 300, shell. DETAILED DESCRIPTION

[0025] The application will be further described in details through specific embodiments and the accompanying drawings. In different embodiments, similar elements are marked with similar element reference numbers. In the following embodiments, many details are described in order to make the application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different cases, or can be replaced by other elements, materials, methods. In some cases, some operations related to the application are not shown or described in the specification, in order to avoid the core part of the application being overwhelmed by too much description, and it is not necessary to describe these related operations in detail for those skilled in the art according to the description in the specification and general technical knowledge in the art.

[0026] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate way to form various embodiments. At the same time, the steps or actions in the method description can also be sequentially adjusted or adjusted in a manner that those skilled in the art can easily see. Therefore, the various sequences in the specification and drawings are only for the purpose of clearly describing a certain embodiment, and do not mean that the sequence is necessary, unless otherwise stated that a certain sequence must be followed.

[0027] The serial numbers of the components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. Unless otherwise specified, "connection" and "coupling" in this application include direct and indirect connection (coupling).

[0028] The aerosol product matched with the heat-not-burn device generally has a smoking section, a cooling section and a filter section, and the aerosol generated by the smoking section can be cooled by the cooling section. At present, the cooling section mostly adopts a regular hollow paper tube. Since the cross-sectional shape of the regular hollow paper tube is regular and the area is large, the flow rate of the aerosol is reduced when the aerosol passes through the cooling section, which reduces the collision frequency between the aerosol particles and between the aerosol particles and the side wall of the cooling section, resulting in a decrease in heat transfer efficiency and a problem of poor cooling effect.

[0029] In the embodiments of the present application, the aerosol generating assembly includes a heating section 100 and a mouthpiece section 200. The mouthpiece section 200 is provided with a first air passage section 211 and a second air passage section 212. The inner diameter of the second air passage section 212 is smaller than that of the first air passage section 211, and the second air passage section 212 is in communication with the heating cavity 110 through the first air passage section 211. During suction, the aerosol is first collected and preliminarily cooled in the first air passage section 211, and then flows out through the second air passage section 212 with a smaller inner diameter. The acceleration process can promote the collision of aerosol particles, help to improve the heat exchange efficiency, accelerate the cooling, and improve the uniformity of aerosol clustering. That is, through the cooperation of the first air passage section 211 and the second air passage section 212, the cooling effect can be enhanced, and the user experience can be improved.

[0030] Embodiments of the aerosol generating assembly in the present application:

[0031] In one embodiment, an aerosol generating assembly is provided, as shown in Figure 1 The aerosol generating assembly includes a heating section 100 and a mouthpiece section 200. The heating section 100 has a heating cavity 110 for accommodating and heating an aerosol substrate to generate an aerosol. The mouthpiece section 200 has a suction air passage 210 for transmitting the aerosol generated in the heating cavity 110 for suction.

[0032] As understood by those skilled in the art, the heating section 100 and the mouthpiece section 200 can be integrally arranged or separately arranged, as long as the heating cavity 110 and the suction air passage 210 can be kept in communication during suction.

[0033] In one embodiment, as shown in Figure 1 The suction air passage 210 includes a first air passage section 211 and a second air passage section 212. The first air passage section 211 is in operable communication with the heating cavity 110 to collect the aerosol generated in the heating cavity 110. The second air passage section 212 is in communication with the heating cavity 110 through the first air passage section 211, and the inner diameter of the second air passage section 212 is smaller than that of the first air passage section 211.

[0034] During use, the aerosol generated in the heating cavity 110 can be collected by the first air passage section 211 to be temporarily stored and cooled in the first air passage section 211. When suction occurs, the aerosol in the first air passage section 211 is sucked into the second air passage section 212. According to the continuity equation and Bernoulli's principle in fluid mechanics, since the inner diameter of the second air passage section 212 is smaller than that of the first air passage section 211, the flow rate of the aerosol sucked into the first air passage section 211 will increase to intensify the movement and collision of aerosol particles, improve the heat exchange efficiency of the aerosol particles, and further cool the aerosol, thereby improving the problem of high temperature of the aerosol being sucked out and improving the suction experience of the user.

[0035] In one embodiment, as shown inFigure 1 A first variable-diameter portion 2111 can be arranged at one end of the first air channel section 211 close to the second air channel section 212. The inner diameter of the first variable-diameter portion 2111 gradually decreases from the one end away from the second air channel section 212 to the one end connected to the first air channel section 211, i.e., the inner diameter of the connection between the first air channel section 211 and the second air channel section 212 gradually decreases, so that the aerosol in the first air channel section 211 is fully inhaled into the second air channel section 212, which helps to reduce the accumulation and condensation of the aerosol in the first air channel section 211. In some embodiments, the air channel wall of the first variable-diameter portion 2111 can be arranged as an arc surface with an arc angle of not more than 90°, so as to enhance the disorder of aerosol particle movement, thereby increasing the collision probability of aerosol particles, improving the heat exchange efficiency, and strengthening the cooling effect.

[0036] In some embodiments, please refer to Figure 1 The suction air channel 210 can further include a third air channel section 213 connected to the second air channel section 212 on the side away from the first air channel section 211, so as to communicate with the first air channel section 211 through the second air channel section 212.

[0037] In some embodiments, the inner diameter of the third air channel section 213 can be greater than that of the second air channel section 212, so that the aerosol in the second air channel section 212 can be diffused and cooled after entering the third air channel section 213, further improving the cooling effect.

[0038] In some embodiments, please refer to Figure 1 A second variable-diameter portion 2131 can also be arranged at one end of the third air channel section 213 close to the second air channel section 212. The inner diameter of the second variable-diameter portion 2131 gradually increases from the one end connected to the second air channel section 212 to the one end away from the second air channel section 212, so that the aerosol particles collide and conduct heat during the diffusion process. The air channel wall of the second variable-diameter portion 2131 can also be arranged as an arc surface with an arc angle of not more than 90°, as described above for the first variable-diameter portion 2111.

[0039] In order to further improve the cooling efficiency and cooling effect of the aerosol, in some embodiments, please refer to Figure 1 The sidewall of the first air channel section 211 is provided with a sidewall air supply port 220 for supplying gas outside the suction nozzle section 200 into the first air channel section 211, so as to mix with the aerosol inhaled into the first air channel section 211, thereby improving the cooling efficiency and cooling effect of the aerosol.

[0040] In some further embodiments, please refer to Figure 1The suction nozzle section 200 includes a gas supply cavity 230 arranged outside the air channel side wall of the suction air channel 210 and extending in the same direction as the axial direction of the suction air channel 210. The outer wall surface of the suction nozzle section 200 is provided with an air inlet 240. The air inlet 240 and the side wall gas supply port 220 are both in communication with the gas supply cavity 230, so that external gas can enter the gas supply cavity 230 through the air inlet 240 and then enter the first air channel section 211 through the side wall gas supply port 220.

[0041] In one embodiment, the suction nozzle section 200 can be a cylindrical structure, and the gas supply cavity 230 can be a sandwiched space arranged along the circumference of the suction nozzle section 200. Those skilled in the art can understand that the sandwiched space is a plurality of air inlet channels that are not connected to each other, or can be an annular cavity or other forms of arrangement.

[0042] The side wall gas supply port 220 can be arranged on the side of the first air channel section 211 close to the heating cavity 110, so that the aerosol and the gas continue to mix during the process of passing through the first air channel section 211 and the second air channel section 212, which helps to prolong the mixing time, improve the mixing uniformity, and thus enhance the consistency of the smoking taste.

[0043] The air inlet 240 can be arranged on the periphery of the third air channel section 213, so that the external gas can carry away part of the heat of the aerosol in the third air channel section 213, the second air channel section 212 and the first air channel section 211 during the air inlet process, which helps to improve the cooling effect. Moreover, the gas flow directions in the suction air channel 210 and the gas supply cavity 230 are opposite, which helps to maintain a large temperature difference between the aerosol in the suction air channel 210 and the gas in the gas supply cavity 230, and thus helps to improve the heat exchange efficiency and further enhance the cooling effect.

[0044] Those skilled in the art can understand that the air inlet 240 and the side wall gas supply port 220 can be arranged at other positions, and the gas supply cavity 230 can also be a sandwiched air channel arranged in the air channel side wall of the suction air channel 210. In short, the positions and forms of arrangement of the air inlet 240, the side wall gas supply port 220 and the gas supply cavity 230 are not limited, as long as the gas outside the suction nozzle section 200 can enter the first air channel section 211.

[0045] In one embodiment, please refer to Figure 1 The gas supply cavity 230 surrounds the suction air channel 210, and the side wall gas supply port 220 is arranged in at least two positions along the circumference of the sandwiched space, so that the external gas can enter the first air channel section 211 from multiple directions, which helps to uniformly intake the air and improve the mixing and cooling effect, and avoids local overheating or local overcooling of the aerosol in the first air channel section 211.

[0046] In one embodiment, please refer to Figure 1The at least two air inlets 240 are circumferentially spaced along the outer peripheral wall of the mouthpiece section 200, and the number of air inlets 240 is not less than the number of side wall air supply ports 220. Those skilled in the art can understand that when the air inlets 240 are provided in multiple numbers, the number of side wall air supply ports 220 can be adjusted according to the situation to adjust the ratio of gas to aerosol during suction, which helps to achieve the adjustment of the concentration dilution and the effects of suction resistance and temperature reduction. For example, by adjusting the number of side wall air supply ports 220, the gas flow rate entering the side wall air supply ports 220 can be 10%-50% of the total flow rate of the aerosol sucked out.

[0047] In some embodiments, the side wall air supply ports 220 can be configured to have a gas flow rate of 17.5ml / s-30ml / s when suctioned, so as to provide a good suction experience for the user. Those skilled in the art can understand that the number of side wall air supply ports 220 can be adjusted to make the gas flow rate through the side wall air supply ports 220 within the required range during suction; or the size and shape of the side wall air supply ports 220 can be adjusted to accelerate or decelerate the gas flow as needed during the process of passing through the side wall air supply ports 220, so as to achieve the required flow rate range. Of course, in other embodiments, the gas flow through the side wall air supply ports 220 can also be configured to have other flow rates.

[0048] For example, referring to Figure 1 , the mouthpiece section 200 is provided with a suction port 250 at one end away from the heating section 100, the suction air channel 210 communicates the heating cavity 110 and the suction port 250, and the air supply cavity 230 is an annular cavity arranged around the entire suction air channel 210. The side wall air supply ports 220 are arranged on the air channel side wall at the end of the first air channel section 211 abutting the heating cavity 110, and are arranged in an array of four around the first air channel section 211. The air inlets 240 are arranged on the outer peripheral wall of the mouthpiece section 200 close to the suction port 250, and are located at one end of the annular cavity close to the suction port 250, and are arranged in four corresponding to the side wall air supply ports 220.

[0049] Those skilled in the art can understand that in order to facilitate the air inlet 240 to introduce air into the air supply cavity 230, the corner opposite to the air inlet 240 of the air supply cavity 230 can be arranged in an arc shape to form an airflow guiding arc surface for guiding the gas sucked in by the air inlet 240 to flow towards the side wall air supply ports 220.

[0050] In one embodiment, referring to Figure 1 , the air supply channel corresponding to the side wall air supply ports 220 is provided with a one-way air inlet structure 260, which is used for one-way flow of the gas outside the mouthpiece section 200 into the first air channel section 211, so as to limit the aerosol from being discharged through the side wall air supply ports 220 and the air supply channel, and reduce the loss of aerosol.

[0051] Those skilled in the art can understand that the air supply airway corresponding to the side wall air supply port 220 can include the side wall air supply port 220, the air supply cavity 230, and the air inlet 240, that is, the one-way air inlet structure 260 can be arranged at the side wall air supply port 220, or in the air supply cavity 230, or at the air inlet 240, and the arrangement position and form of the one-way air inlet structure 260 are not limited, as long as the one-way air inlet structure 260 can supply the gas outside the mouthpiece section 200 to flow into the first airway section 211. Exemplarily, the one-way air inlet structure 260 is a Tesla valve arranged in the side wall air inlet 240, to limit the aerosol in the first airway section 211 from flowing back into the air supply airway.

[0052] In an embodiment, referring to Figure 1 In addition, the air guide layer 120 can be arranged in the cavity wall of the heating cavity 110 and can be connected and communicated with the air supply cavity 230, and the air outlet 121 is arranged at the end of the heating cavity 110 away from the suction airway 210, and the air outlet 121 is connected and communicated with the air guide layer 120, so that the air supply cavity 230 can also supply air to the heating cavity 110 through the air guide layer 120.

[0053] Those skilled in the art should know that the side wall air supply port 220 can also be arranged on the cavity side wall at the end of the heating cavity 110 and the first airway section 211, or referring to Figure 1 Part of the side wall air supply port 220 is arranged on the cavity side wall of the first airway section 211, and the remaining part is arranged on the cavity side wall of the heating cavity 110. The Tesla valve arranged in the side wall air supply port 220 can be composed of two valve bodies, one of which is arranged in the part of the side wall air supply port 220 on the side wall of the first airway section 211, and the other is arranged in the part of the side wall air supply port 220 on the side wall of the heating cavity 110.

[0054] Embodiments of the heat-not-burn device in the present application:

[0055] In an embodiment, referring to Figure 2 The heat-not-burn device includes a host and the aerosol generating assembly of any of the above embodiments, and the aerosol generating assembly is arranged in the host. The host can include a shell 300, and the aerosol generating assembly is arranged in the shell 300. In some embodiments, the host can further include a heating circuit, a battery, etc. arranged in the shell 300.

[0056] The above application of specific examples is used to illustrate the present application, and is not used to limit the present application. Those skilled in the art can make some simple deductions, deformations, or substitutions according to the idea of the present application.

Claims

1. An aerosol generating assembly, characterised in that, The aerosol generating assembly comprises: a heating section having a heating cavity for accommodating and heating an aerosol substrate to generate an aerosol; and a mouthpiece section having a suction air channel, the suction air channel comprising a first air channel section operatively communicating with the heating cavity to collect the aerosol generated in the heating cavity, and a second air channel section communicating with the heating cavity through the first air channel section, the second air channel section having an inner diameter smaller than that of the first air channel section.

2. An aerosol generating assembly according to claim 1, wherein, A side wall of the first air channel section is provided with a side wall air supply port for allowing gas outside the mouthpiece section to enter the first air channel section to mix with the aerosol drawn into the first air channel section.

3. An aerosol-generating assembly according to claim 2, wherein the aerosol- generating assembly comprises a heating element arranged to heat the aerosol-forming substrate. The mouthpiece section comprises a gas supply cavity arranged outside the air channel side wall of the suction air channel and extending in the same direction as the axial direction of the suction air channel, and an air inlet arranged on the outer wall surface of the mouthpiece section, the air inlet and the side wall air supply port both communicating with the gas supply cavity.

4. An aerosol generating assembly according to claim 3, wherein, The side wall air supply port is arranged on the side of the first air channel section close to the heating cavity.

5. The aerosol-generating assembly of claim 3, wherein, The suction air channel further comprises a third air channel section connected to the end of the second air channel section away from the first air channel section, and the air inlet is arranged on the periphery of the third air channel section.

6. The aerosol-generating assembly of claim 3, wherein, The mouthpiece section has a cylindrical structure, the gas supply cavity is a sandwiched space arranged along the circumference of the mouthpiece section, and the side wall air supply port is arranged at least twice along the circumference of the sandwiched space.

7. The aerosol-generating assembly of claim 3, wherein, The gas supply cavity surrounds the suction air channel, the air inlet is arranged at least twice along the circumferential wall of the mouthpiece section, and the number of air inlets is not less than the number of side wall air supply ports.

8. An aerosol generating assembly according to claim 7, wherein, The side wall air supply port is configured to have a gas flow rate of 17.5ml / s-30ml / s through the side wall air supply port during suction.

9. An aerosol-generating assembly according to any one of claims 2 to 8, wherein, The air supply channel corresponding to the side wall air supply port is provided with a one-way air inlet structure for allowing gas outside the mouthpiece section to flow into the first air channel section in one direction.

10. A heat-not-burn device, characterized in that The aerosol generating assembly comprises: a host; and the aerosol generating assembly of any one of claims 1 to 9 is arranged in the host.

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