Heat-not-burn device and aerosol generating system

Abstract

The utility model discloses a heat-not-burn device and an aerosol generating system, the heat-not-burn device comprises a heating assembly, the heating assembly comprises a cup body, the cup body is internally provided with a heating cavity and a containing cavity used for containing an aerosol matrix, and the downstream end of the heating cavity is communicated with the containing cavity; the suction nozzle is provided with an air outlet channel, the suction nozzle is in butt joint with the end, close to one side of the containing cavity, of the cup body in an openable and closable mode, and the air outlet channel is communicated with the containing cavity; the heating non-combustion device is provided with an air inlet channel, the air inlet channel comprises a main channel communicated with the outside, a first branch channel and a second branch channel, the first branch channel and the second branch channel are communicated with the downstream end of the main channel, the first branch channel is communicated with the air outlet channel, and the second branch channel is communicated with the heating cavity. The first branch channel is communicated with the air outlet channel of the suction nozzle, so that the temperature of aerosol sucked by a user is appropriate, and the use comfort of the user is improved.

Description

TECHNICAL FIELD

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

[0002] The heat-not-burn device is a device for heating an aerosol product to generate an aerosol, which is provided with a heating cavity. The aerosol product has a filter and a smoking segment. The heating cavity is used for heating the smoking segment inserted into the heating device. The aerosol generated after the smoking segment is heated can be drawn out through the filter. The temperature of the aerosol generated after heating is relatively high, and if directly supplied to the user for drawing, there is generally a sense of discomfort. In the related art, a way of setting a cooling channel between the filter and the smoking segment is adopted to reduce the temperature of the aerosol. Due to the smoking habit of the user, the length of the aerosol product is often basically consistent with that of a traditional cigarette, which leads to a limited design space of the aerosol product. The way of using the aerosol product to achieve cooling is generally difficult to well meet the use demand of the user. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a heat-not-burn device and an aerosol generating system, which are used to solve the cooling problem of the aerosol in the device.

[0004] According to a first aspect of the present application, a heat-not-burn device is provided in an embodiment, comprising:

[0005] a heating assembly, comprising a cup body, wherein a heating cavity and a containing cavity for containing an aerosol substrate are arranged in the cup body, and a downstream end of the heating cavity is in communication with the containing cavity;

[0006] a nozzle having an air outlet channel, wherein the nozzle is openably and closably connected to an end of the cup body close to the containing cavity, and the air outlet channel is in communication with the containing cavity;

[0007] The heat-not-burn device has an air inlet channel, wherein the air inlet channel comprises a main channel in communication with the outside, and a first branch channel and a second branch channel in communication with a downstream end of the main channel respectively, the first branch channel is in communication with the air outlet channel, and the second branch channel is in communication with the heating cavity.

[0008] In an embodiment, the nozzle comprises an integrated outer body and an inner body, the inner side of the inner body defines the air outlet channel, the main channel is defined between the outer body and the inner body, and the first branch channel is in communication with the air outlet channel through the bottom of the side wall of the inner body.

[0009] In an embodiment, a plurality of air outlet holes are arranged at the bottom of the side of the nozzle close to the cup body, and the main channel is in communication with the first branch channel and the second branch channel through the air outlet holes respectively.

[0010] In one embodiment, the second branch channel is arranged on the cup body, and the second branch channel comprises a first section extending in the same direction as the axis of the cup body and a second section connecting the first section and the upstream end of the heating cavity, the first section is arranged in the side wall of the cup body, and the first section is in communication with the main channel when the nozzle is in abutment with the cup body, and the second section is arranged in the inner side of the bottom wall of the cup body.

[0011] In one embodiment, the inner side of the bottom wall of the cup body is provided with a groove, the middle of the groove bottom is provided with a raised flow guide platform, the side wall of the groove and the side wall of the flow guide platform are both inclined or arc-shaped, the width of the groove near the end of the heating cavity is greater than the width of the groove away from the end of the heating cavity, the width of the flow guide platform near the end of the heating cavity is less than the width of the flow guide platform away from the end of the heating cavity, and the side wall of the groove and the side wall of the flow guide platform define the second section; the heating assembly further comprises a heating body having a plurality of airflow channels, the heating body is arranged in the heating cavity, and the heating body has a gap with the flow guide platform.

[0012] In one embodiment, the heating assembly further comprises a gas collecting plate arranged at the end of the heating body away from the bottom wall of the cup body for carrying the aerosol substrate; the gas collecting plate comprises a first side and a second side arranged opposite to each other, and the first side faces the heating body; a plurality of flow guide channels in communication with the airflow channels are arranged through the gas collecting plate from the first side to the second side; the cross-sectional area of the flow guide channels gradually decreases from the first side to the second side.

[0013] In one embodiment, the heat-not-burn device further comprises a main body and a cover body, the heating assembly is mounted on the main body, and the nozzle is mounted on the cover body; the cover body is connected to the main body in an openable and closable manner to form the communication between the accommodating cavity and the air outlet channel, so that the accommodating cavity is switched between a closed state and an open state; when the accommodating cavity is in the closed state, the nozzle is in abutment with the cup body of the heating assembly, and the heating assembly can heat the aerosol substrate in the accommodating cavity to generate aerosol; when the accommodating cavity is in the open state, the opening of the accommodating cavity is exposed, and the aerosol substrate can enter and exit the heating cavity through the opening.

[0014] In one embodiment, a one-way valve is arranged between the nozzle and the cup body, and the one-way valve is fixedly connected with the nozzle and / or the cup body to allow gas to flow out from the first branch channel to the air outlet channel in one direction.

[0015] In an embodiment, the air outlet channel comprises a cooling section and an acceleration section which are connected in series, the cooling section is arranged close to the accommodating cavity and communicates with the accommodating cavity when the mouthpiece is in abutting connection with the cup body, the acceleration section is arranged away from the accommodating cavity, and the cross-sectional area of the acceleration section in a direction perpendicular to the axial direction of the mouthpiece is smaller than the cross-sectional area of the cooling section in a direction perpendicular to the axial direction of the mouthpiece; and the first branch channel communicates with the cooling section.

[0016] In an embodiment, the air outlet channel further comprises a buffer section, and the acceleration section communicates with the buffer section at an end away from the cooling section, and the cross-sectional area of the acceleration section in a direction perpendicular to the axial direction is smaller than the cross-sectional area of the buffer section in a direction perpendicular to the axial direction.

[0017] In an embodiment, the heat-not-burn device further comprises a switch assembly, the switch assembly is configured to control the opening and closing of the second branch channel; and / or, the heat-not-burn device further comprises a bottom air inlet channel which communicates the heating cavity with the outside, and the switch assembly is configured to control the opening and closing of the bottom air inlet channel.

[0018] According to a second aspect of the present application, in an embodiment, an aerosol generating system is provided, comprising an aerosol substrate and a heat-not-burn device as described above, and the aerosol substrate is accommodated in the accommodating cavity.

[0019] According to the heat-not-burn device and the aerosol generating system of the above-mentioned embodiments, a part of the air entering from the main channel can enter the heating cavity through the second branch channel and then be carried to the air outlet channel of the mouthpiece together with the aerosol, and the first branch channel communicates with the air outlet channel of the mouthpiece, so that another part of the air entering from the main channel can enter the air outlet channel through the first branch channel and mix with the aerosol in the air outlet channel which has a higher temperature. The temperature of the air in the first branch channel is lower, and after mixing, the temperature of the aerosol in the air outlet channel can be reduced, thereby solving many problems caused by the use of aerosol products to achieve temperature reduction, and the temperature of the aerosol taken by the user is appropriate, thereby improving the comfort of the user. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a structural schematic diagram of an aerosol generating system in a closed state according to an embodiment of the present application;

[0021] Figure 2 FIG. 2 is a structural schematic diagram of an aerosol generating system in an open state according to an embodiment of the present application;

[0022] Figure 3 FIG. 3 is a sectional view of an aerosol generating system according to an embodiment of the present application;

[0023] Figure 4A sectional view of the mouthpiece and the cup body in abutment in one embodiment;

[0024] Figure 5 A structure schematic view of the aerosol substrate contained in the accommodating cavity in one embodiment;

[0025] Figure 6 A structure schematic view of the cup body in one embodiment;

[0026] Figure 7 A structure schematic view of the mouthpiece in one embodiment;

[0027] Figure 8 A structure schematic view of the heating body in one embodiment;

[0028] Figure 9 A structure schematic view of the gas collecting plate in one embodiment;

[0029] Wherein the reference signs are as follows:

[0030] 100 - a heat-not-burn device; 10 - a first part; 11 - a mouthpiece; 111 - an air outlet passage; 1111 - a cooling section; 1112 - an acceleration section; 1113 - a buffer section; 112 - a main passage; 1121 - an air inlet; 113 - a variable-diameter element; 114 - an outer body; 115 - an inner body; 116 - an air outlet hole; 116a - a first air outlet hole; 116b - a second air outlet hole; 117 - a first branch passage; 12 - a cover body; 13 - a one-way valve; 20 - a second part; 21 - a heating assembly; 211 - a heating cavity; 212 - an opening; 213 - a second branch passage; 2131 - a first section; 2132 - a second section; 214 - a cup body; 2141 - a bottom wall; 2142 - a side wall; 215 - a heating body; 2151 - an airflow passage; 2152 - a heat exchange core; 2153 - a heating element; 216 - a gap; 217 - a flow guide table; 218 - a gas collecting plate; 2181 - a first side; 2182 - a second side; 2183 - a flow guide passage; 219 - an accommodating cavity; 220 - a groove; 22 - a main body; 200 - an aerosol substrate. DETAILED DESCRIPTION

[0031] The utility model will be further described in detail below with the specific embodiments combined with the drawings. Similar elements in different embodiments adopt the associated similar element labels. In the following embodiments, many details are described in order to make the present application better understood. However, the person skilled in the art can easily recognize that part of the features can be omitted in different cases, or can be replaced by other elements, materials or 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 it is not necessary to describe these related operations in detail for the person skilled in the art according to the description in the specification and the general technical knowledge in the art.

[0032] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner 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 is obvious to the person skilled in the art. 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.

[0033] The serial numbers of the components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and have no order or technical meaning. Unless otherwise specified, the "connection" and "coupling" in this application include direct and indirect connections (couplings).

[0034] In the related art, the way of setting a temperature reduction channel between the filter and the smoking segment is used to reduce the temperature of the aerosol. Due to the smoking habits of users, the length of the aerosol product is often basically the same as that of traditional cigarettes, resulting in limited design space for the aerosol product. The way of using the aerosol product to achieve temperature reduction is usually difficult to meet the user's use demand well.

[0035] Therefore, the present application provides a heating non-combustion device, which has a first branch channel. Part of the air entering through the main channel can enter the air outlet channel through the first branch channel and mix with the aerosol with higher temperature in the air outlet channel to achieve temperature reduction. The problems caused by using the aerosol product to achieve temperature reduction are solved.

[0036] Please refer to Figures 1 to 9 In an embodiment, a heating non-combustion device is provided, mainly including a heating assembly 21, a suction nozzle 11 and other functional components as needed, which will be described in detail below.

[0037] In this embodiment, as Figures 2-5As shown, the heating assembly 21 comprises a cup body 214, the cup body 214 is internally provided with a heating cavity 211 and a containing cavity 219 for accommodating the aerosol substrate 200, a downstream end of the heating cavity 211 is communicated with the containing cavity 219; the suction nozzle 11 has an air outlet passage 111, the suction nozzle 11 is openably and closably butted against an end of the cup body 214 close to the containing cavity 219, the air outlet passage 111 is communicated with the containing cavity 219; the heating non-combustion device 100 has an air inlet passage, the air inlet passage comprises a main passage 112 communicated with the outside, and a first branch passage 117 and a second branch passage 213 respectively communicated with a downstream end of the main passage 112, the first branch passage 117 is communicated with the air outlet passage 111, and the second branch passage 213 is communicated with the heating cavity 211.

[0038] It can be understood that the suction nozzle 11 in the embodiment is a component for a user to suck the aerosol in the device, and specifically, the generated aerosol can be sucked out through the air outlet passage 111 of the suction nozzle 11. The cup body 214 in the embodiment has the heating cavity 211 and the containing cavity 219, and the heating assembly 21 simultaneously has the functions of heating and accommodating the aerosol substrate 200. In the embodiment, the upstream end is an end close to the air inlet 1121 in the flow direction of the gas, and the downstream end is an end close to the air outlet in the flow direction of the gas, and the gas flows from the upstream end to the downstream end. In the embodiment, the first branch passage 117 is communicated with the air outlet passage 111, and the second branch passage 213 is communicated with the heating cavity 211, so that part of the air entering from the main passage 112 can enter the heating cavity 211 through the second branch passage 213 to carry the aerosol to the air outlet passage 111 of the suction nozzle 11, and the first branch passage 117 is communicated with the air outlet passage 111 of the suction nozzle 11, so that another part of the air entering through the main passage 112 can enter the air outlet passage 111 through the first branch passage 117, and mix with the aerosol in the air outlet passage 111 which has a higher temperature, and the temperature of the air in the first branch passage 117 is lower, so that after mixing, the temperature of the aerosol in the air outlet passage 111 can be reduced, and many problems caused by the use of the aerosol product to achieve cooling are solved, the temperature of the aerosol sucked by the user is appropriate, and the comfort of the user in use is improved.

[0039] The suction nozzle 11 in the embodiment can be opened and closed to abut against the end of the cup body 214 near the accommodation cavity 219, so that the accommodation cavity 219 can be switched between the closed state and the open state. When the accommodation cavity 219 is in the closed state, the suction nozzle 11 is folded and abutted against the cup body 214, the opening 212 of the cup body 214 is in communication with the air outlet channel 111, and the heating assembly 21 can heat the aerosol substrate 200 in the accommodation cavity 219 to generate an aerosol; when the accommodation cavity 219 is in the open state, the suction nozzle 11 is separated from the cup body 214 to be half-separated or completely separated, so that the opening 212 of the cup body 214 is exposed, and the aerosol substrate 200 can enter and exit the accommodation cavity 219 through the opening 212. That is, when the accommodation cavity 219 is in the closed state, the heating non-combustion device 100 can work, and the user can use it for smoking; when the accommodation cavity 219 is in the open state, the user can replace the aerosol substrate 200 in the accommodation cavity 219 or clean the accommodation cavity 219. Through the openable and closable abutment between the suction nozzle 11 and the cup body 214, only the aerosol substrate 200 needs to be replaced after the aerosol substrate 200 is used up, and the suction nozzle 11 can continue to be used, thereby avoiding waste and reducing the use cost of the user.

[0040] As an implementation manner, the main channel 112 can be arranged around the periphery of the air outlet channel 111. In this way, the space of the main channel 112 can be increased, and the gas flow can be accelerated. In some embodiments, the main channel 112 and the air outlet channel 111 can also be arranged side by side, and the arrangement can be set according to the needs.

[0041] As an implementation manner, the main channel 112 can be arranged around the periphery of the air outlet channel 111. In this way, the space of the main channel 112 can be increased, and the gas flow can be accelerated. In some embodiments, the main channel 112 and the air outlet channel 111 can also be arranged side by side, and the arrangement can be set according to the needs. Figure 4 Figure 5 As an implementation manner, the main channel 112 can be arranged around the periphery of the air outlet channel 111. In this way, the space of the main channel 112 can be increased, and the gas flow can be accelerated. In some embodiments, the main channel 112 and the air outlet channel 111 can also be arranged side by side, and the arrangement can be set according to the needs. Figure 4 Figure 5 As an implementation manner, the main channel 112 can be arranged around the periphery of the air outlet channel 111. In this way, the space of the main channel 112 can be increased, and the gas flow can be accelerated. In some embodiments, the main channel 112 and the air outlet channel 111 can also be arranged side by side, and the arrangement can be set according to the needs. Figure 4 Figure 5 As an implementation manner, the main channel 112 can be arranged around the periphery of the air outlet channel 111. In this way, the space of the main channel 112 can be increased, and the gas flow can be accelerated. In some embodiments, the main channel 112 and the air outlet channel 111 can also be arranged side by side, and the arrangement can be set according to the needs.

[0042] In an embodiment, the air inlet 1121 is provided on the suction nozzle 11, and one or more air inlets 1121 can be provided in the embodiment. The air inlet 1121 penetrates the outer body 114, so that external air can enter the main passage 112 through the air inlet 1121. When multiple air inlets 1121 are provided, the air inlets 1121 can be arranged at intervals around the circumference of the outer body 114, so as to accelerate the entering speed of air. In actual design, the air resistance can also be adjusted to a suitable parameter range by adjusting the number of air inlets 1121. In some embodiments, in order to achieve faster air intake and improve air intake flow rate, the side wall of the air inlet 1121 and the side wall of the main passage 112 can form an included angle greater than 90 degrees, so that the air can enter in a direction closer to the air flow direction in the main passage 112, and the influence of air flow turning on the air flow rate can be reduced.

[0043] In an embodiment, the bottom of the suction nozzle 11 near the cup body 214 is provided with multiple air outlets 116, and the main passage 112 is in communication with the first branch passage 117 and the second branch passage 213 through the air outlets 116. In the embodiment, the bottom of the suction nozzle 11 can have an annular bottom wall, and the air outlets 116 can be arranged on the bottom wall or part of the air outlets 116 can be arranged on the bottom wall and part of the air outlets 116 can be arranged on other components installed on the bottom of the suction nozzle 11. Each air outlet 116 is arranged in an axial penetrating manner. In the embodiment, the air outlets 116 can be configured to communicate the main passage 112 and the first branch passage 117, or can be configured to communicate the main passage 112 and the second branch passage 213, or can be configured to communicate both the main passage 112 and the first branch passage 117 and the main passage 112 and the second branch passage 213. As shown in the figure, in the embodiment, the suction nozzle 11 can be provided with multiple air outlets 116, and part of the air outlets 116 communicate the main passage 112 and the second branch passage 213, and part of the air outlets 116 communicate both the main passage 112 and the first branch passage 117 and the main passage 112 and the second branch passage 213. In order to facilitate description, the air outlets 116 that communicate both the main passage 112 and the first branch passage 117 and the main passage 112 and the second branch passage 213 are defined as first air outlets 116a, and the air outlets 116 that communicate the main passage 112 and the first branch passage 117 are defined as second air outlets 116b. Figures 4-7

[0044] ​In one embodiment, by setting the number and cross-sectional area of the first air outlet holes 116a and the second air outlet holes 116b, the flow distribution ratio of the main passage 112 to the first branch passage 117 and the second branch passage 213 can be adjusted to meet the requirements of proper aerosol cooling and aerosol outflow speed and fullness. Exemplarily, the gas flow entering the first branch passage 117 is 10%-50% of the gas flow in the main passage 112, and the gas flow entering the second branch passage 213 is 50%-90% of the gas flow in the main passage 112. In some application scenarios, such as Figure 7 As shown in the figure, the first air outlet holes 116a can be provided with four, and the four first air outlet holes 116a are arranged at equal intervals around the circumference of the mouthpiece 11. Between any two adjacent first air outlet holes 116a, a plurality of second air outlet holes 116b are provided.

[0045] In one embodiment, as shown in Figure 4 、 Figure 5 The cup body 214 includes a bottom wall and a side wall. The bottom wall 2141 of the cup body 214 is connected to one end of the side wall 2142 of the cup body 214, and together with the side wall 2142 of the cup body 214 forms a heating cavity 211 and a containing cavity 219. The opening 212 is located at one end of the containing cavity 219 away from the bottom wall 2141 of the cup body 214. The second branch passage 213 is provided on the cup body 214. The second branch passage 213 includes a first section 2131 extending in the same direction as the axis of the cup body 214, and a second section 2132 communicating the first section 2131 with the upstream end of the heating cavity 211. The first section 2131 is arranged in the side wall 2142 of the cup body 214, and is in communication with the main passage 112 when the mouthpiece 11 is folded and connected to the cup body 214. The second section 2132 is arranged inside the bottom wall 2141 of the cup body 214. The first section 2131 is arranged axially to achieve rapid air intake. The first section 2131 is arranged in the side wall 2142 of the cup body 214, so that the heating assembly 21 can preheat the first section 2131. The preheated air can be heated better when entering the heating cavity 211. In this embodiment, the first section 2131 can be provided with a plurality of first sections 2131, which are arranged independently of each other. The first section 2131 can correspond one-to-one to the air outlet holes 116 at the bottom of the mouthpiece 11. The independent arrangement of the first sections 2131 can reduce the lateral flow of air and increase the air intake speed. The shape of the first section 2131 is not limited in this embodiment. For example, it can be a circular hole, a square hole or a triangular hole. When it is a triangular hole, as shown in Figure 6As shown, one side of the triangle is arranged close to the inner side of the cup body 214, and one corner of the triangle is arranged close to the outer side of the cup body 214, that is, the first section 2131 has a structure of being wider close to the inner side of the cup body 214 and narrower close to the outer side of the cup body 214. The wider close to the inner side of the cup body 214 can improve the heating effect of the air in the first section 2131, and the narrower close to the outer side of the cup body 214 can reduce heat loss.

[0046] In an embodiment, the inner side of the bottom wall 2141 of the cup body 214 is provided with a groove 220, the middle of the groove bottom of the groove 220 is provided with a raised flow guide platform 217, the side wall of the groove 220 and the side wall of the flow guide platform 217 are both inclined or arc-shaped, the width of the groove 220 close to one end of the heating cavity 211 is greater than the width of the groove 220 away from the other end of the heating cavity 211, the width of the flow guide platform 217 close to one end of the heating cavity 211 is less than the width of the flow guide platform 217 away from the other end of the heating cavity 211, and the side wall of the groove 220 and the side wall of the flow guide platform 217 define a second section 2132. The heating assembly 21 further includes a heating body 215 having a plurality of airflow channels 2151, the heating body 215 is arranged in the heating cavity 211, and the heating body 215 has a gap 216 with the flow guide platform 217. When the side wall of the groove 220 is inclined or arc-shaped, it can form air guidance, so that the air in the first section 2131 can be smoothly diverted, reducing the influence of diversion on the flow rate of the gas. When the side wall of the flow guide platform 217 is inclined or arc-shaped, it can form airflow guidance, so that the air in the second section 2132 can be more smoothly diverted to flow into the heating cavity 211, further reducing the influence of diversion on the flow rate of the gas, and the flow guide platform 217 can divide and rectify the gas from the first section 2131.

[0047] The heating body 215 in the embodiment can generate heat after being powered on. The heating body 215 can have airflow channels 2151, and the airflow enters the heating cavity 211 in sequence through the main channel 112, the first section 2131, and the second section 2132, and then enters the airflow channels 2151. The heating body 215 generates heat after being powered on, heats the airflow in the airflow channels 2151 to generate hot airflow, and the hot airflow flows into the aerosol substrate 200 accommodated in the accommodation cavity 219 to heat the aerosol substrate 200 to generate aerosol. In some embodiments, as shown in FIG. 2B, the heating body 215 has a plurality of airflow channels 2151 arranged in parallel, and the airflow channels 2151 are arranged in parallel with the main channel 112. Figure 8As shown, the heating body 215 can include a heat exchange core 2152 fixedly arranged in the heating cavity 211 and a heating body 2153 annularly arranged around the heat exchange core 2152 for generating heat after being electrified, and the airflow passage 2151 is arranged on the heat exchange core 2152. Specifically, the heating body 2153 can generate heat after being electrified, and the heat is transferred to the heat exchange core 2152, thereby heating the airflow in the airflow passage 2151. In an embodiment, the heating body 215 can have a gap 216 between the heating body 215 and the flow guide table 217, the gap 216 is in communication with the airflow passage 2151 of the heating body 215, and the gap 216 can improve the rectification effect of the flow guide table 217. The airflow flowing out of the second section 2132 can pass through the gap 216 into the heating cavity 211, thereby improving the uniformity of the airflow. In some application scenarios, the heating assembly 21 of the present embodiment can also not be provided with the heat exchange core 2152, and the heating body 2153 can be directly arranged on the bottom wall 2141 of the cup body 214 and / or the side wall 2142 of the cup body 214 to generate heat after being electrified, and the heat is transferred to the cup body 214, and the cup body 214 heats the aerosol substrate 200 in it to generate an aerosol.

[0048] It should be noted that, as Figure 5 shown, when the aerosol substrate 200 is accommodated in the accommodation cavity 219, the aerosol substrate 200 can not exceed the top end of the side wall 2142 of the cup body 214 (i.e. the end of the side wall 2142 of the cup body 214 away from the bottom wall 2141 of the cup body 214), and preferably, the aerosol substrate 200 can be lower than the top end of the side wall 2142 of the cup body 214. In this way, the part of the cup body 214 above the aerosol substrate 200 and the air outlet passage 111 of the mouthpiece 11 can all serve as an aerosol cooling and buffering space, which can increase the aerosol cooling space and improve the cooling effect.

[0049] An embodiment, as Figure 9 shown, the heating assembly 21 can further include a gas collecting plate 218 arranged at the end of the heating body 215 away from the bottom wall 2141 of the cup body 214 for carrying the aerosol substrate 200. The gas collecting plate 218 includes oppositely arranged first and second sides 2181 and 2182, the first side 2181 faces the heating body 215, and a plurality of flow guide channels 2183 communicating with the airflow passages 2151 are arranged through the gas collecting plate 218 from the first side 2181 to the second side 2182, and the cross-sectional area of the flow guide channels 2183 gradually decreases from the first side 2181 to the second side 2182. In this way, by changing the cross-sectional area of the flow guide channels 2183, the flow rate of the gas can be accelerated.

[0050] In an embodiment, the ratio of the cross-sectional area of the flow guide channels 2183 at the second side 2182 to the cross-sectional area of the flow guide channels 2183 at the first side 2181 can be 1:25-1:4.

[0051] In an embodiment, the cross section of the flow guide passage 2183 is circular. It can be appreciated that in other embodiments, the cross section can be elliptical, triangular or polygonal.

[0052] In an embodiment, the flow guide passage 2183 corresponds to the airflow passage 2151 one-to-one. In this way, the gas in the airflow passage 2151 can quickly pass through the flow guide passage 2183 into the aerosol substrate 200.

[0053] In an embodiment, the heat-not-burn device 100 further comprises a main body 22, a cover 12, the heating assembly 21 is mounted on the main body 22, and the suction nozzle 11 is mounted on the cover 12; the cover 12 is connected to the main body 22 in an openable and closable manner to form a communication between the accommodation cavity 219 and the air outlet passage 111. The cover 12 is connected to the main body 22 in an openable and closable manner, realizing the openable and closable butt joint between the suction nozzle 11 and the cup body 214. In the heat-not-burn device 100, as shown in FIGS. 1 and 2, the suction nozzle 11 and the cover 12 are located in the first part 10, and the heating assembly 21 and the main body 22 are located in the second part 20, and the first part 10 is connected to the second part 20 in an openable and closable manner. In specific implementation, the cover 12 can move relative to the main body 22 to drive the suction nozzle 11 to move relative to the main body 22, i.e., the suction nozzle 11 moves relative to the heating assembly 21, so as to realize the butt joint and communication between the air outlet passage 111 and the opening 212 of the accommodation cavity 219, or to expose the opening 212 of the accommodation cavity 219. Figure 1 、 Figure 2

[0054] As an embodiment, the cover 12 is rotationally connected to the main body 22. By rotating the cover 12 relative to the main body 22, the air outlet passage 111 and the opening 212 of the accommodation cavity 219 are butt jointed and communicated, or the opening 212 of the accommodation cavity 219 is exposed. This operation mode is simple, and it is not easy for the opening 212 of the accommodation cavity 219 to be exposed to cause the cover 12 to be lost. Of course, in specific applications, as an alternative embodiment, the cover 12 can be slidably connected to the main body 22. As another alternative embodiment, the cover 12 can be detachably connected to the main body 22.

[0055] In an embodiment, a one-way valve 13 is arranged between the suction nozzle 11 and the cup body 214, and the one-way valve 13 is fixedly connected with the suction nozzle 11 and / or the cup body 214 to allow the gas to flow out from the first branch passage 117 to the air outlet passage 111 in one direction. In this way, the problem that the aerosol flows back to the main passage 112 and condenses in the main passage 112 to cause the blockage or pollution of the main passage 112 and the inconvenience of cleaning can be solved. The one-way valve 13 in this embodiment can be, but is not limited to, a Tesla valve.

[0056] ​In one embodiment, such as Figure 7 As shown, the first vent 116a can be installed on the check valve 13. The first vent 116a axially penetrates the check valve 13. The first vent 116a connects the main channel 112 and the first branch channel 117, as well as the vent 116 of the main channel 112 and the second branch channel 213. The check valve 13 also functions as a three-way flow valve. The inlet end of the check valve 13 is the first vent 116a, which connects to the downstream end of the main channel 112. One of the outlet ends of the check valve 13 is connected to the first branch channel 117, or one of the outlet ends of the check valve 13 is the first branch channel 117, which connects to the upstream end of the vent channel 111, and the other outlet end connects to the upstream end of the second branch channel 213. Specifically, the one-way valve 13 is configured such that the gas flow rate entering the first branch channel 117 through the one-way valve 13 can be 10%-50% of the gas flow rate in the main channel 112, and the gas flow rate entering the second branch channel 213 through the one-way valve 13 can be 50%-90% of the gas flow rate in the main channel 112. This configuration ensures that there is air pressure in the nozzle 11 to draw out aerosols; in addition, since hot air itself has a certain expansion, even without differentiated flow splitting, there is a certain negative pressure in the space enclosed by the outlet channel 111 and the heating chamber 211, ensuring that aerosols can be drawn out.

[0057] In one embodiment, such as Figure 6 , Figure 7 As shown, the one-way valve 13 can be formed by two parts, one fixed to the nozzle 11 and the other fixed to the cup body 214. When the nozzle 11 and the cup body 214 are connected, the two parts of the one-way valve 13 are closed. When the nozzle 11 and the cup body 214 are in contact and disconnected, the two parts of the one-way valve 13 also separate. During separation, the channel inside the one-way valve 13 can be cleaned, making cleaning more convenient. In some applications, the one-way valve 13 can also be set as an integral structure, which can be fixed to the nozzle 11 or the cup body 214.

[0058] In one embodiment, the air outlet channel 111 comprises a cooling section 1111 and an accelerating section 1112 connected in series, the cooling section 1111 is arranged close to the accommodating cavity 219 and communicates with the accommodating cavity 219 when the mouthpiece 11 is in abutting connection with the cup body 214, the accelerating section 1112 is arranged away from the accommodating cavity 219, and the cross-sectional area of the accelerating section 1112 in the direction perpendicular to the axial direction of the mouthpiece 11 is smaller than the cross-sectional area of the cooling section 1111 in the direction perpendicular to the axial direction of the mouthpiece 11; the first branch channel 117 communicates with the cooling section 1111. The cooling section 1111 is located at the upstream end of the air outlet channel 111, the cooling air enters the cooling section 1111 from the main channel 112 through the first branch channel 117, and the aerosol generated by heating of the aerosol substrate 200 enters the cooling section 1111 through the opening 212 of the accommodating cavity 219, the hot aerosol mixes with the cooling air in the cooling section 1111, and after being diluted and cooled by the cooling air, the aerosol is discharged through the accelerating section 1112. The accelerating section 1112 is arranged such that the cross-sectional area of the accelerating section 1112 in the direction perpendicular to the axial direction of the mouthpiece 11 is smaller than the cross-sectional area of the cooling section 1111 in the direction perpendicular to the axial direction, i.e., the channel diameter of the air outlet channel 111 at the accelerating section 1112 is smaller than the channel diameter of the cooling section 1111. In this way, the transmission of the aerosol and the air can be accelerated by changing the channel diameter.

[0059] In one embodiment, the air outlet channel 111 further comprises a buffer section 1113, the accelerating section 1112 communicates with the buffer section 1113 at the end away from the cooling section 1111, and the cross-sectional area of the accelerating section 1112 in the direction perpendicular to the axial direction is smaller than the cross-sectional area of the buffer section 1113 in the direction perpendicular to the axial direction. The buffer section 1113 can be used to buffer the aerosol and the air, so that the aerosol and the air can be fully mixed, the aerosol can be fully diffused and cooled in the buffer section 1113, and a plurality of particle clusters can be formed. After the single aerosol particles are clustered, the concentration of the aerosol entering the user's mouth will become more full and thick.

[0060] In one embodiment, the ratio of the cross-sectional area of the accelerating section 1112 in the direction perpendicular to the axial direction of the mouthpiece 11 to the cross-sectional area of the cooling section 1111 in the direction perpendicular to the axial direction can be 1:64-1:16. The ratio of the cross-sectional area of the accelerating section 1112 in the direction perpendicular to the axial direction of the mouthpiece 11 to the cross-sectional area of the buffer section 1113 in the direction perpendicular to the axial direction can be 1:64-1:16.

[0061] In one embodiment, the transition between the cooling section 1111 and the accelerating section 1112 is an arc surface, and the transition between the buffer section 1113 and the accelerating section 1112 is an arc surface. In this way, the different air outlet sections can gradually transition to each other, so as to avoid condensation of the aerosol when the aerosol enters from one air outlet section to another air outlet section, and also reduce the resistance of suction.

[0062] In one embodiment, as shown in FIG. 1, the air outlet channel 111 comprises a cooling section 1111 and an accelerating section 1112 connected in series, the cooling section 1111 is arranged close to the accommodating cavity 219 and communicates with the accommodating cavity 219 when the mouthpiece 11 is in abutting connection with the cup body 214, the accelerating section 1112 is arranged away from the accommodating cavity 219, and the cross-sectional area of the accelerating section 1112 in the direction perpendicular to the axial direction of the mouthpiece 11 is smaller than the cross-sectional area of the cooling section 1111 in the direction perpendicular to the axial direction of the mouthpiece 11; the first branch channel 117 communicates with the cooling section 1111. The cooling section 1111 is located at the upstream end of the air outlet channel 111, the cooling air enters the cooling section 1111 from the main channel 112 through the first branch channel 117, and the aerosol generated by heating of the aerosol substrate 200 enters the cooling section 1111 through the opening 212 of the accommodating cavity 219, the hot aerosol mixes with the cooling air in the cooling section 1111, and after being diluted and cooled by the cooling air, the aerosol is discharged through the accelerating section 1112. The accelerating section 1112 is arranged such that the cross-sectional area of the accelerating section 1112 in the direction perpendicular to the axial direction of the mouthpiece 11 is smaller than the cross-sectional area of the cooling section 1111 in the direction perpendicular to the axial direction, i.e., the channel diameter of the air outlet channel 111 at the accelerating section 1112 is smaller than the channel diameter of the cooling section 1111. In this way, the transmission of the aerosol and the air can be accelerated by changing the channel diameter. Figure 4 ,Figure 5 As shown, the inner wall of the inner layer body 115 can be provided with a variable-diameter element 113, which can be an integral structure with the inner layer body 115, or can be fixed on the inner wall of the inner layer body 115 by a connecting manner. In this way, the air outlet passage 111 can be provided with different shapes as needed, and the inner wall of the variable-diameter element 113 encloses the air outlet passage 111, facilitating the arrangement of the cooling section 1111, the acceleration section 1112, and the buffer section 1113.

[0063] In an embodiment, the heat-not-burn device 100 further comprises a switch assembly for controlling the opening and closing of the second branch passage 213; and / or, the heat-not-burn device 100 further comprises a bottom air inlet passage (not shown in the figure) for communicating the heating cavity 211 with the outside, and the switch assembly is used to control the opening and closing of the bottom air inlet passage. The bottom air inlet passage in this embodiment is a different passage from the air inlet passage on the mouthpiece 11, and the bottom air inlet passage can make the outside air directly enter the heating cavity 211. In some embodiments, the bottom air inlet passage can not be provided, and the air can enter the heating cavity 211 through the second branch passage 213, and the opening and closing of the second branch passage 213 is controlled by the switch assembly to realize the switching between aerobic heating and anaerobic heating; in some embodiments, the bottom air inlet passage can also be provided at the same time, and the air can enter the heating cavity 211 through the second branch passage 213 and the bottom air inlet passage. The switch assembly in this embodiment can be provided only on the second branch passage 213, and the opening and closing of the second branch passage 213 is controlled by the switch assembly to realize the flow regulation of the air entering the heating cavity 211, or can be provided only on the bottom air inlet passage, and the opening and closing of the bottom air inlet passage is controlled by the switch assembly to realize the flow regulation of the air entering the heating cavity 211, or can be provided on the second branch passage 213 and the bottom air inlet passage at the same time, and the switch assemblies on the second branch passage 213 and the bottom air inlet passage are simultaneously opened or closed to realize the switching between aerobic heating and anaerobic heating.

[0064] When the switch assembly controls the second branch passage 213 and / or the bottom air inlet passage to be disconnected, air flows into the main passage 112 from the outside under the negative pressure generated by the user sucking the suction nozzle 11, and flows into the air outlet passage 111 through the first branch passage 117. A pressure difference between the air outlet passage 111 and the heating cavity 211 forms a negative pressure, under the action of which the aerosol generated by heating the aerosol substrate 200 is accelerated into the air outlet passage 111 through the opening 212, mixed with cold air in the air outlet passage 111, and cooled. In this way, the air flow does not pass through the aerosol substrate 200, and the purpose of heating without burning is achieved by reducing the oxygen content, and oxygen-free heating is performed. When the switch assembly controls the second branch passage 213 and / or the bottom air inlet passage to be connected, part of the air flows into the first branch passage 117, and then flows into the air outlet passage 111. Part of the air flows into the heating cavity 211 from the second branch passage 213 and / or the bottom air inlet passage, and the high-temperature air generated after being heated flows into the containing cavity 219 to heat the aerosol substrate 200. The aerosol generated by heating the aerosol substrate 200 is mixed with the air in the air outlet passage 111 and cooled, and then flows out through the suction nozzle 11, realizing oxygen-containing heating. By setting the switch assembly to control the connection and disconnection of the second branch passage 213 and / or the bottom air inlet passage, the heating without burning device 100 has two heating modes of oxygen-containing heating and oxygen-free heating, the use of the heating without burning device 100 is more flexible, and the user experience is improved.

[0065] In an embodiment, the switch assembly includes a switch valve for controlling the connection and disconnection of the second branch passage 213 and / or the bottom air inlet passage. In a specific implementation, the switch valve can be arranged at any position of the second branch passage 213 and / or the bottom air inlet passage according to design requirements.

[0066] In an embodiment, the switch assembly further includes an operation button (not marked in the figure) or a key (not marked in the figure), which controls the opening and closing of the switch valve by operation, thereby realizing the switching of oxygen-containing and oxygen-free heating.

[0067] In the heating without burning device 100 of the above embodiment, part of the air entering from the main passage 112 can enter the heating cavity 211 through the second branch passage 213 to carry the aerosol to the air outlet passage 111 of the suction nozzle 11, and the other part of the air entering from the main passage 112 can enter the air outlet passage 111 through the first branch passage 117, and mix with the aerosol with a higher temperature in the air outlet passage 111. The temperature of the air in the first branch passage 117 is lower, and after mixing, the temperature of the aerosol in the air outlet passage 111 is lowered, solving many problems caused by using the aerosol product to achieve cooling, the temperature of the aerosol sucked by the user is appropriate, and the comfort of the user in use is improved.

[0068] Please refer to Figures 1 to 3The aerosol generating system of the above-mentioned embodiments comprises the heat-not-burn device 100, and a portion of the air entering the main passage 112 can enter the heating cavity 211 through the second branch passage 213 to carry the aerosol to the air outlet passage 111 of the mouthpiece 11, and the first branch passage 117 is in communication with the air outlet passage 111 of the mouthpiece 11, so that another portion of the air entering the main passage 112 can enter the air outlet passage 111 through the first branch passage 117 and mix with the aerosol with a higher temperature in the air outlet passage 111. The temperature of the air in the first branch passage 117 is lower, and the temperature of the aerosol in the air outlet passage 111 can be lowered after mixing, which solves many problems caused by the use of aerosol products to achieve temperature reduction, the temperature of the aerosol taken by the user is appropriate, and the comfort of the user is improved.

[0069] In one embodiment, the aerosol generating substrate 200 is a shaped body with micropores formed inside, i.e., a tobacco rod. For example, the aerosol generating substrate 200 is made of tobacco or non-tobacco smoking material and smoking agents, flavorings, etc. For example, the aerosol generating substrate 200 can first be formed by mixing tobacco powder or other plant powder with a certain proportion of polyhydric alcohol, flavorings, adhesives, etc., to form an aerosol generating substrate precursor polymer. Then, a certain volume or weight of the polymer is poured into a mold, and the volume ratio of the aerosol generating substrate precursor polymer before and after compression is 10:3-6:1 under the action of pressure. After demolding, a one-piece tobacco rod is formed, and micropores for aerosol passage are formed inside the tobacco rod. Further, the mold structure can be designed such that, after the demolding to form the tobacco rod, the inside of the tobacco rod is formed with airway holes penetrating through both axial ends thereof for the collection and transmission of aerosol. When the tobacco rod is heated, aerosol is formed in the micropores, and under the suction of the user, the aerosol is gathered into the airway holes and then sucked out along the airway holes. In other embodiments, the tobacco rod can also be formed by extrusion.

[0070] In one embodiment, the wall material of the tobacco rod has a microstructure of micropores distributed in a radial interlayer disorder manner, and the micropores are irregular polygons. For example, the porosity of the micropores of the tobacco rod is 20%-80%, and the pore size of the micropores is 50 nm-20 μm.

[0071] The aerosol generating system of the above-mentioned embodiments comprises the heat-not-burn device 100, and a portion of the air entering the main passage 112 can enter the heating cavity 211 through the second branch passage 213 to carry the aerosol to the air outlet passage 111 of the mouthpiece 11, and the first branch passage 117 is in communication with the air outlet passage 111 of the mouthpiece 11, so that another portion of the air entering the main passage 112 can enter the air outlet passage 111 through the first branch passage 117 and mix with the aerosol with a higher temperature in the air outlet passage 111. The temperature of the air in the first branch passage 117 is lower, and the temperature of the aerosol in the air outlet passage 111 can be lowered after mixing, which solves many problems caused by the use of aerosol products to achieve temperature reduction, the temperature of the aerosol taken by the user is appropriate, and the comfort of the user is improved.

[0072] The utility model is described above with specific examples, which is only used for helping to understand the utility model and does not limit the utility model. For the skilled in the art to which the utility model belongs, according to the idea of the utility model, a number of simple deductions, deformations or substitutions can be made.

Claims

1. A heat-not-burn device, characterized in that, The application relates to a heating non-combustion device. The heating non-combustion device comprises a heating assembly, a cup body, a nozzle and a main body. The heating assembly comprises a cup body, a heating cavity and a containing cavity for containing aerosol substrate. The nozzle comprises an outer layer body and an inner layer body.

2. The heat-not-burn device of claim 1, wherein The nozzle is provided with a plurality of air outlet holes at the bottom of the side close to the cup body.

3. The heat-not-burn device of claim 2, wherein, The second branch channel is arranged on the cup body.

4. The heat-not-burn device of claim 1, wherein, The cup body is provided with a groove on the inner side of the bottom wall.

5. The heat-not-burn device of claim 4, wherein The heating non-combustion device further comprises a main body and a cover.

6. A heat-not-burn device according to any one of claims 1 to 5, wherein, The nozzle and the cup body are provided with a one-way valve.

7. A heat-not-burn device according to any one of claims 1 to 5, wherein The air outlet channel comprises a cooling section and an acceleration section.

8. A heat-not-burn device according to any one of claims 1 to 5, wherein The first branch channel is communicated with the cooling section.

9. A heat-not-burn device according to any one of claims 1 to 5, wherein The heat-not-burn device further comprises a switch assembly for controlling the on-off of the second branch passage; and / or, the heat-not-burn device further comprises a bottom air inlet passage connecting the heating cavity with the outside, and the switch assembly is used for controlling the on-off of the bottom air inlet passage.

10. An aerosol-generating system comprising, An aerosol substrate and a heat-not-burn device as claimed in any one of claims 1 to 9, the aerosol substrate being housed in the housing cavity.

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