Aerosol generating device and airflow detection assembly

Abstract

The utility model relates to the technical field of aerosol generation devices, in particular to an aerosol generation device with an air pressure sensor and an airflow detection assembly. The air pressure sensor is located on the outer side of the air channel and communicated with the air channel through the air pressure induction opening. As the protective tongue is arranged at the air pressure sensing port, the tongue root of the protective tongue is positioned on one side of the downstream of the air pressure sensing port and the tongue tip is positioned on the upstream of the tongue root in the airflow direction in the air channel when the aerosol is sucked, the protective tongue can play a role in protecting the air pressure sensing port when the aerosol is not sucked; aerosol in the gas channel is not easy to enter the air pressure sensing port, so that the air pressure sensor is not easy to damage.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generating devices, and in particular to an aerosol generating device with an air pressure sensor and an airflow detection component. Background Art

[0002] The aerosol generating device can heat and atomize the aerosol generating matrix to form an aerosol for the user to inhale. When the aerosol generating device is working, the aerosol generating matrix is ​​heated by the electric heating element to generate an aerosol. In order to synchronize the opening and closing of the electric heating element of the aerosol generating device with the user's inhalation, an air pressure sensor is usually set in the aerosol generating device to sense the air pressure change. When the user performs the inhalation action, the air pressure sensor detects that the inhalation is being performed, and the electric heating element starts the heating work in response to the detection result of the air pressure sensor. When the user stops the inhalation action, the air pressure sensor detects that the inhalation is stopped, and the electric heating element stops the heating work in response to the detection result of the air pressure sensor. Since the aerosol cannot usually be inhaled cleanly, especially when a rod-shaped aerosol generating matrix is ​​used, even if no inhalation is performed, the aerosol generating rod will still generate aerosol under the action of residual heat. After the inhalation stops, the aerosol in the atomization chamber will diffuse into the gas channel. The current air pressure sensor is usually located in a gas channel. The aerosol in the gas channel and the oil after the aerosol condenses can easily enter the air pressure sensor, making the air pressure sensor easily damaged. Utility Model Content

[0003] The purpose of the present application is to provide an airflow detection component to improve the technical problem that the air pressure sensor in the current aerosol generating device is easily damaged.

[0004] In addition, the object of the present application is to provide an aerosol generating device using the above-mentioned airflow detection component.

[0005] In a first aspect, an embodiment provides an airflow detection component, wherein the airflow detection component has a gas channel, wherein the gas channel is used to connect the outside with the atomization chamber of the aerosol generating device; and an air pressure sensing port is provided on a channel wall of the gas channel;

[0006] The airflow detection component includes an air pressure sensor, which is arranged on the outside of the gas channel and connected to the gas channel through the air pressure sensing port; a protective tongue protruding into the gas channel is provided on the channel wall of the gas channel, and the protective tongue includes a tongue tip and a tongue root connected to the channel wall; the protective tongue is located at the air pressure sensing port; in the airflow direction in the gas channel when the aerosol in the atomization chamber is inhaled, the tongue root is located on the downstream side of the air pressure sensing port, and the tongue root is located downstream of the tongue tip, so that the protective tongue protects the air pressure sensing port.

[0007] Furthermore, in one embodiment, the protective tongue covers the air pressure sensing port.

[0008] Furthermore, in one embodiment, the tongue root and the sides of the protective tongue are connected to the channel wall of the gas channel, the tongue tip and the channel wall of the gas channel form a connecting opening, and the air pressure sensing port is connected to the gas channel through the connecting opening.

[0009] Further, in one embodiment, the airflow detection component includes an airway tube, the channel in the airway tube forms at least a portion of the gas channel, the airflow detection component includes a sealing seat configured on the airway tube, the air pressure sensor is installed on the sealing seat, and the protective tongue is located on the sealing seat.

[0010] Furthermore, in one embodiment, the sealing seat includes an airway sealing tube located in the airway tube and a sensor mounting portion extending out of the airway tube, the airway tube and the airway sealing tube are sleeved together and sealed, the sensor mounting portion has a mounting groove, and the air pressure sensor is mounted in the mounting groove.

[0011] Furthermore, in one embodiment, the airflow detection component includes an airway tube, the channel in the airway tube forms at least a part of the gas channel, the airflow detection component includes a first base and a second base, the first base and the second base are aligned and enclose a part of the gas channel, and the airway tube is inserted on the first base.

[0012] Furthermore, in one embodiment, the gas channel has at least one corner air channel; when the aerosol in the atomization chamber is inhaled, in the direction of the air flow in the gas channel, the air pressure sensing port is located upstream of at least one of the corner air channels.

[0013] Furthermore, in one embodiment, the gas channel includes a first airway segment, a second airway segment and a third airway segment, and the first airway segment, the second airway segment and the third airway segment are arranged in sequence, the first airway segment is used to communicate with the bottom of the atomization chamber, and the connection between the second airway segment and the first airway segment and the connection between the second airway segment and the third airway segment both form the corner airway; the first airway segment and the third airway segment have the same extension direction; the air pressure sensing port is on the third airway segment, and when the aerosol in the atomization chamber is inhaled, the airflow direction in the first airway segment is opposite to the airflow direction in the third airway segment.

[0014] Furthermore, in one embodiment, one end of the second airway segment is the first end, and the other end is the second end, the first end is connected to the first airway segment, the second end is connected to the third airway segment, and the second airway segment gradually tilts away from the atomization chamber in a direction from the first end to the second end.

[0015] In a second aspect, an embodiment provides an aerosol generating device, comprising a device shell, an electric heating element, a device circuit and an airflow detection component; the device shell has an atomizing chamber, and the electric heating element is used to heat an aerosol generating substrate in the atomizing chamber to generate an aerosol;

[0016] The airflow detection component has a gas channel, and the gas channel is used to connect the outside world with the atomization chamber of the aerosol generating device; a gas pressure sensing port is provided on the channel wall of the gas channel;

[0017] The airflow detection component includes an air pressure sensor, which is arranged on the outside of the gas channel and communicates with the gas channel through the air pressure sensing port; a protective tongue protruding into the gas channel is provided on the channel wall of the gas channel, and the protective tongue includes a tongue tip and a tongue root connected to the channel wall; the protective tongue is located at the air pressure sensing port; in the airflow direction of the gas channel when the aerosol in the atomization chamber is inhaled, the tongue root is located on the downstream side of the air pressure sensing port, and the tongue root is located downstream of the tongue tip, so that the protective tongue protects the air pressure sensing port;

[0018] The device circuit controls the operation of the electric heating element in response to the detection result of the air pressure sensor.

[0019] Furthermore, in one embodiment, the protective tongue covers the air pressure sensing port.

[0020] Furthermore, in one embodiment, the tongue root and the sides of the protective tongue are connected to the channel wall of the gas channel, the tongue tip and the channel wall of the gas channel form a connecting opening, and the air pressure sensing port is connected to the gas channel through the connecting opening.

[0021] Further, in one embodiment, the airflow detection component includes an airway tube, the channel in the airway tube forms at least a portion of the gas channel, the airflow detection component includes a sealing seat configured on the airway tube, the air pressure sensor is installed on the sealing seat, and the protective tongue is located on the sealing seat.

[0022] Furthermore, in one embodiment, the sealing seat includes an airway sealing tube located in the airway tube and a sensor mounting portion extending out of the airway tube, the airway tube and the airway sealing tube are sleeved together and sealed, the sensor mounting portion has a mounting groove, and the air pressure sensor is mounted in the mounting groove.

[0023] Furthermore, in one embodiment, the airflow detection component includes an airway tube, the channel in the airway tube forms at least a part of the gas channel, the airflow detection component includes a first base and a second base, the first base and the second base are aligned and enclose a part of the gas channel, and the airway tube is inserted on the first base.

[0024] Furthermore, in one embodiment, the gas channel has at least one corner air channel; when the aerosol in the atomization chamber is inhaled, in the direction of the air flow in the gas channel, the air pressure sensing port is located upstream of at least one of the corner air channels.

[0025] Furthermore, in one embodiment, the gas channel includes a first airway segment, a second airway segment and a third airway segment, and the first airway segment, the second airway segment and the third airway segment are arranged in sequence, the first airway segment is used to communicate with the bottom of the atomization chamber, and the connection between the second airway segment and the first airway segment and the connection between the second airway segment and the third airway segment both form the corner airway; the first airway segment and the third airway segment have the same extension direction; the air pressure sensing port is on the third airway segment, and when the aerosol in the atomization chamber is inhaled, the airflow direction in the first airway segment is opposite to the airflow direction in the third airway segment.

[0026] Furthermore, in one embodiment, one end of the second airway segment is the first end, and the other end is the second end, the first end is connected to the first airway segment, the second end is connected to the third airway segment, and the second airway segment gradually tilts away from the atomization chamber in a direction from the first end to the second end.

[0027] According to the airflow detection assembly of the above embodiment, the gas channel has an air pressure sensing port, the air pressure sensor is located outside the gas channel, and is connected to the gas channel through the air pressure sensing port. Since a protective tongue is provided at the air pressure sensing port, in the airflow direction in the gas channel when the aerosol is inhaled, the tongue root of the protective tongue is located on the downstream side of the air pressure sensing port, and the tongue tip is located upstream of the tongue root, so that when the aerosol is not inhaled, the protective tongue can protect the air pressure sensing port, and the aerosol in the gas channel is not easy to enter the air pressure sensing port, and it is not easy to cause damage to the air pressure sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1A schematic diagram of a portion of the structure of an aerosol generating device in one embodiment;

[0029] Figure 2 is a cross-sectional view of a portion of the structure of an aerosol generating device in one embodiment;

[0030] Figure 3 For along Figure 2 Sectional view of AA in the middle;

[0031] Figure 4 For along Figure 3 Cross-sectional view of the middle BB;

[0032] Figure 5 Schematic diagram of the structure of a seal of an airflow detection assembly in an embodiment.

[0033] List of feature names corresponding to the figure marks in the figure: 1. atomization chamber; 2. gas channel; 21. air pressure sensing port; 22. protective tongue; 221. tongue tip; 222. tongue root; 223. side; 23. connecting port; 24. corner airway; 25. first airway section; 26. second airway section; 27. third airway section; 3. aerosol generating matrix; 30. aerosol generating rod; 31. nozzle end; 32. air inlet end; 4. electric heating element; 5. air pressure sensor; 6. airway tube; 61. mounting port; 7. sealing seat; 71. airway sealing tube; 711. sealing tube hole; 72. sensor mounting part; 721. mounting groove; 81. first base; 82. second base; 9. heating element seat; 10. heating element cover; 101. cover hole; 11. insulation sleeve; 12. annular insulation chamber.

[0034] Explanation on the reference numerals in brackets in the drawings: In the reference numerals in brackets in the drawings, the features referred to by the reference numerals are both the features represented by the numbers in the brackets and the features represented by the numbers outside the brackets. DETAILED DESCRIPTION

[0035] The present application 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] It should be noted that the conduction, communication and interconnection described in the present application are not limited to empty channels through which aerosol generating oil can pass, but also include channels filled with porous materials through which aerosol generating oil can pass.

[0039] In view of the problem that the air pressure sensor in the current aerosol generating device is easily damaged, the present application arranges the air pressure sensor outside the gas channel, and configures the air pressure sensor at the air pressure sensing port so as not to affect the pressure in the atomizing chamber. In order to reduce the aerosol entering the air pressure sensor, a protective tongue is provided at the air pressure sensing port, and the air pressure sensing port is covered by the protective tongue to prevent the aerosol from entering the air pressure sensing port.

[0040] In one embodiment, please refer to Figures 1 to 5 The aerosol generating device comprises a device shell, an electric heating element 4, a device circuit and an airflow detection component. The device shell has an atomizing chamber 1. Please refer to Figure 2 and Figure 3 The airflow detection component has a gas channel 2 for communicating with the atomizing chamber 1, and a pressure sensing port 21 is provided on the channel wall of the gas channel 2. The atomizing chamber 1 is used to accommodate an aerosol generating substrate 3, and the electric heating element 4 is used to heat the aerosol generating substrate in the atomizing chamber 1 to generate an aerosol.

[0041] Please refer to Figures 2 to 4 The airflow detection assembly includes an air pressure sensor 5. The air pressure sensor 5 is arranged outside the air channel 2 and communicates with the air channel 2 through the air pressure sensing port 21. The device circuit controls the electric heating element 4 to work in response to the detection result of the air pressure sensor 5.

[0042] A protective tongue 22 protruding into the gas channel 2 is provided on the channel wall of the gas channel 2, and the protective tongue 22 includes a tongue tip 221 and a tongue root 222 connected to the channel wall; the protective tongue 22 is located at the air pressure sensing port 21. In the airflow direction in the gas channel 2 when the aerosol in the atomization chamber 1 is sucked, the tongue root 222 is located on the downstream side of the air pressure sensing port 21, and the tongue root 222 is located downstream of the tongue tip 221, so that the protective tongue 22 protects the air pressure sensing port 21.

[0043] Since a protective tongue 22 is provided at the air pressure sensing port 21, in the direction of the air flow in the gas channel when the aerosol is inhaled, the tongue root 222 of the protective tongue 22 is located on the downstream side of the air pressure sensing port 21, and the tongue tip 221 is located upstream of the tongue root 222. In this way, when the aerosol is not inhaled, the protective tongue 22 can protect the air pressure sensing port 21, and the aerosol in the gas channel 2 is not easy to enter the air pressure sensing port 21, and it is not easy to cause damage to the air pressure sensor 5.

[0044] In one embodiment, please refer to Figure 2 and Figure 3 , the protective tongue 22 covers the air pressure sensing port 21. In this way, the protective tongue 22 has a better protective effect on the air pressure sensing port 21.

[0045] The term "masking" in the present application means that the air pressure sensing port 21 is not directly exposed to the gas channel 2, and the covering effect of the protective tongue 22 can prevent at least part of the aerosol from entering the air pressure sensing port.

[0046] In one embodiment, please refer to Figures 3 to 5 The tongue root 222 and the two side edges 223 of the protective tongue 22 are connected to the channel wall of the gas channel 2, the tongue tip 221 and the channel wall of the gas channel 2 form a connecting port 23, the air pressure sensing port 21 is connected to the gas channel 2 through the connecting port 23, and the gas in the gas channel 2 needs to pass through the connecting port 23 before reaching the air pressure sensing port 21. In one embodiment, when the aerosol in the atomization chamber 1 is sucked, the airflow direction at the position of the protective tongue 22 in the gas channel 2 is opposite to the direction of the connecting port 23.

[0047] In one embodiment, please refer to Figure 2 and Figure 3 The air pressure sensing port 21 is located on one side of the protective tongue 22 , and the other side of the protective tongue 22 is for the gas in the gas channel 2 to pass through.

[0048] In one embodiment, please refer to Figure 1 and Figure 2 The aerosol generating substrate 3 is an aerosol generating rod 30. The aerosol generating rod 30 has a nozzle end 31 at one end and an air inlet end 32 at the other end. The nozzle end 31 has a nozzle for suction, and the air inlet end 32 is used to supply gas into the aerosol generating rod 30 when the aerosol generating rod 30 is sucked.

[0049] In one embodiment, the electric heating element 4 is a heating tube for inserting the aerosol generating rod 30, and the heating tube includes a heat-conducting tube and a heating element installed on the outer wall of the heat-conducting tube or embedded in the heat-conducting tube. Specifically, the heating element and the heat-conducting tube can adopt any feasible scheme, for example, the heating element can be a resistance wire embedded in the heat-conducting tube, in which case the heat-conducting tube is suitable to be made of insulating heat-conducting materials. Of course, an insulating layer can also be coated on the outer periphery of the resistance wire, in which case the heat-conducting tube can also be made of conductive materials; for another example, the heating element can also be a heating film printed on the outer periphery of the heat-conducting tube, in which case the heating element and the heat-conducting tube jointly form a thick film tube, and there is an insulating layer outside the heating film, in which case the heat-conducting tube can be made of a metal tube with good thermal conductivity; for another example, the heating element can also be a resistance wire wound on the outer wall of the heat-conducting tube. The heating element can also adopt the method of electromagnetic induction heating, for example, an inductor coil is arranged outside the heat-conducting tube, and the heat-conducting tube itself is made of magnetic induction material, which means that the heat-conducting tube itself is a heating element; or a heating element made of magnetic induction material is arranged on the heat-conducting tube, and the heating element generates heat through electromagnetic induction heating.

[0050] For further information, please refer to Figure 2 In one embodiment, the gas channel 2 has at least one corner air channel 24, and the air pressure sensing port 21 is located upstream of at least one corner air channel 24. It should be noted that, unless otherwise specified, the upstream and downstream in this application are based on the flow direction of the airflow when the atomizing chamber 1 is inhaled, that is, when inhaling aerosol, please refer to Figure 2 and Figure 3 , the corner airway 24 is located downstream of the air pressure sensing port 21. When the aerosol is not inhaled, the aerosol in the atomizing chamber 1 flows outward from the atomizing chamber 1 along the gas channel 2. At this time, in the flow direction of the aerosol in the gas channel 2, the corner airway 24 is located upstream of the air pressure sensing port 21. Since the corner airway 24 is more likely to contact with the aerosol to condense the aerosol, the air pressure sensing port 21 being located upstream of the corner airway 24 can better reduce the aerosol from entering the air pressure sensing port 21.

[0051] In some other embodiments, the gas channel 2 may also be a straight channel, for example, the gas channel 2 and the atomization chamber 1 are arranged along a straight line.

[0052] Further, in one embodiment, please refer to Figure 2 and Figure 3The gas channel 2 includes a first airway section 25, a second airway section 26 and a third airway section 27, which are arranged in sequence. The first airway section 25 is used to communicate with the bottom of the atomizing chamber 1, and the two ends of the second airway section 26 are respectively communicated with the first airway section 25 and the third airway section 27, and the air pressure sensing port 21 is located on the third airway section 27. The second airway section 26 forms a corner airway 24 at the connection between the first airway section 25 and the second airway section 26 and the third airway section 27. The first airway section 25 and the third airway section 27 extend in the same direction. When the aerosol in the atomizing chamber 1 is inhaled, the airflow direction in the first airway section 25 is opposite to the airflow direction in the third airway section 27. The corner airways 24 at the two ends of the second airway section 26 have a better blocking effect on the aerosol.

[0053] It should be noted that the corner airway 24 refers to an airway in an angle shape, and the corner airway 24 can be in an acute angle shape, an obtuse angle shape, or a right angle shape. The corner airway 24 can be in an arc angle shape, or a chamfered angle shape.

[0054] Further, in one embodiment, please refer to Figure 2 , one end of the second airway segment 26 is the first end, and the other end is the second end. The first end is connected to the first airway segment 25, and the second end is connected to the third airway segment 27. The second airway segment 26 gradually tilts away from the atomization chamber 1 in the direction from the first end to the second end. After the second airway segment 26 is tilted, when the aerosol flows to the third airway segment 27, it is easier to contact the corner airway 24 between the second airway segment 26 and the third airway segment 27 and be condensed, and the aerosol blocking effect is better. In some other embodiments, the second airway segment 26 may not be tilted, for example, the second airway segment 26 is perpendicular to the third airway segment 27. In some other embodiments, the second airway segment 26 gradually tilts away from the atomization chamber 1 in the direction from the second end to the first end.

[0055] Specifically, in one embodiment, please refer to Figure 2 and Figure 3 The atomizing chamber 1 is in the shape of an elongated strip. The atomizing chamber 1 and the third airway segment 27 are arranged in parallel and spaced apart. The first airway segment 25 is shorter. The first airway segment 25 and the atomizing chamber 1 are arranged in a straight line.

[0056] In some other embodiments, the first airway segment 25, the second airway segment 26 and the third airway segment 27 may be curved, such as wavy, in addition to being straight. It should be noted that the airflow direction of a certain segment in the gas channel 2 in the present application refers to the overall flow direction of the airflow. For example, when a wavy airway segment is used, the airflow direction of the airway segment is from one end of the airway segment to the other end.

[0057] Regarding the structure of the gas channel 2, in one embodiment, please refer to Figure 2 and Figure 3 The airflow detection assembly includes an airway tube 6, and the channel in the airway tube 6 forms at least a part of the gas channel 2. The airway tube 6 has a simple structure and lower processing cost.

[0058] Further, in one embodiment, please refer to Figure 3 and Figure 5 The airflow detection assembly includes a sealing seat 7, an air pressure sensor 5 is mounted on the sealing seat 7, and a protective tongue 22 is located on the sealing seat 7. The sealing seat 7 facilitates the sealing between the air pressure sensor 5 and the airway tube 6, and can also be mounted with the air pressure sensor, which is convenient for installation.

[0059] Specifically, in one embodiment, at least a portion of the sealing seat 7 is disposed in the airway tube 6, see Figures 3 to 5 The sealing seat 7 includes an airway sealing tube 71 in the airway tube 6 and a sensor mounting portion 72 extending out of the airway tube 6. The airway tube 6 and the airway sealing tube 71 are sleeved together and sealed. The airway tube 6 is sleeved on the periphery of the airway sealing tube 71, and the inner wall surface of the airway tube 6 is in sealing contact with the outer wall surface of the airway sealing tube 71. In one embodiment, the sensor mounting portion 72 has a mounting groove 721, and the air pressure sensor 5 is mounted in the mounting groove 721. In one embodiment, the airway sealing tube 71 is inserted into the airway tube 6, and the airway sealing tube 71 has a sealing tube hole 711, which is a through hole to keep the airway tube 6 connected. The protective tongue 22 is in the sealing tube hole 711. The sealing tube hole 711 forms a part of the gas channel 2.

[0060] In one embodiment, for easy installation, please refer to Figure 1 and Figure 3 The airway tube 6 has a mounting opening 61, and the sealing seat 7 is a flexible seat. The airway sealing tube 71 of the sealing seat 7 can be installed in the airway tube 6 through the mounting opening 61. Please refer to Figure 3 The airway sealing tube 71 is sheathed together with the airway tube 6, and the airway sealing tube 71 is inside the airway tube 6. Both ends of the airway sealing tube 71 extend to both sides of the installation opening 61 in the extension direction of the airway tube 6, so that a better seal of the installation opening 61 can be achieved. In one embodiment, the sealing seat 7 is made of silicone. The sealing seat 7 and the airway tube 6 can be connected together by any feasible method such as clamping, bonding, etc.

[0061] Further, in one embodiment, please refer to Figure 2 and Figure 3The airflow detection assembly includes a first base 81 and a second base 82, the first base 81 and the second base 82 are aligned and enclose a part of the gas channel 2, and the airway tube 6 is inserted on the first base 81. In one embodiment, the second airway section 26 is surrounded by the first base 81 and the second base 82. In this way, the second airway section 26 is more convenient to process. In order to facilitate the sealing of the airway tube 6 and the first base 81, in one embodiment, the first base 81 is made of a sealant material, such as silicone, rubber, etc.

[0062] Further, in one embodiment, please refer to Figure 2 The airflow detection component includes a heater seat 9, which is inserted and fixed to the first base 81, and the electric heater 4 is arranged on the heater seat 9. In this way, the heater seat 9 and the airway tube 6 are both inserted and installed on the first base 81, which is convenient for assembly and improves assembly efficiency. In some other embodiments, in addition to being fixed to the first base 81 by insertion, the heater seat 9 can also be connected by bonding, welding, clamping or fasteners. In one embodiment, the heater seat 9 has a seat hole, and the seat hole forms a part of the first airway section 25.

[0063] Regarding the gas channel 2, in one embodiment, the gas channel includes a channel surrounded by the airway tube 6, a channel surrounded by the airway sealing tube, a seat hole of the heating element seat 9, and a channel surrounded by the first base and the second base. Correspondingly, the channel wall of the gas channel also includes multiple parts, and the tube wall of the airway tube 6, the tube wall of the airway sealing tube 71, the hole wall of the seat hole in the heating element seat 9, and the hole wall in the first base 81 and the second base 82 all form a part of the channel wall of the gas channel 2. In addition to the above forms, the gas channel can be any other feasible form, such as in one embodiment, an air pipe is used to connect to the atomization chamber, and the air pipe extends to the outer shell of the aerosol generating device and communicates with the outside world.

[0064] Furthermore, in one embodiment, the aerosol generating device includes a heating element cover 10, the electric heating element 4 is sandwiched between the heating element seat 9 and the heating element cover 10, the electric heating element 4 is a heating tube, the heating tube surrounds the atomizing chamber 1, the heating element cover 10 has a cover hole 101 connected to the atomizing chamber 1, the cover hole 101 is for inserting the aerosol generating matrix 3, the gas channel 2 is connected to the bottom of the atomizing chamber 1, and extends to the heating element cover 10 and is connected to the cover hole 101. In this way, there is no need to open a special hole on the shell of the aerosol generating device to communicate with the gas channel 2, which can reduce the number of holes on the shell of the aerosol generating device.

[0065] In one embodiment, a heat insulating sleeve 11 is provided between the heating element seat 9 and the heating element cover 10 , and an annular heat insulating cavity 12 is formed between the heat insulating sleeve 11 and the electric heating element 4 .

[0066] In some other embodiments, the aerosol generating device can also generate aerosol by heating the aerosol generating liquid. In this case, the aerosol generating device includes an oil guide member in contact with the electric heating member 4, and the oil guide member is used to guide the aerosol generating liquid to the electric heating member 4. At least part of the oil guide member and the electric heating member 4 is in the atomizing chamber 1. The aerosol generating device has an oil storage chamber, and oil is supplied to the atomizing chamber 1 through the oil storage chamber.

[0067] In one embodiment, when the air pressure sensor 5 senses that the aerosol generating device is being puffed, the device circuit connects the electric heating element 4 to the power supply in response to the sensing result of the air pressure sensor 5, so that the electric heating element 4 starts to heat up. When the air pressure sensor 5 senses that the aerosol generating device is not being puffed, the device circuit disconnects the electric heating element 4 from the power supply in response to the sensing result of the air pressure sensor 5, and the electric heating element 4 cannot heat up. The sensing result of the air pressure sensor 5 can be an electrical signal sent after detecting the target data, or it can be an operation of directly disconnecting or connecting the device circuit in response to the puffing result of the aerosol generating device.

[0068] In one embodiment, the air pressure sensor 5 is used to sense the gas pressure in the atomization chamber 1. The air pressure sensor 5 is connected to the device circuit. After the gas pressure in the atomization chamber 1 drops to a target value, the air pressure sensor 5 sends a connection signal, and the device circuit connects the circuit in response to the connection signal. When the gas pressure in the atomization chamber 1 does not drop to the target value, the device circuit keeps the electric heating element 4 disconnected from the power supply in response to the air pressure sensor 5.

[0069] In one embodiment, the airflow detection assembly may also only include the sealing seat 7 and the air pressure sensor 5 fixed on the sealing seat 7 .

[0070] In an embodiment of an airflow detection component, the airflow detection component may be the airflow detection component described in any one of the above embodiments, and details are not repeated here.

[0071] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. An airflow detection component, characterized in that: The airflow detection component has a gas channel, and the gas channel is used to connect the outside world with the atomization chamber of the aerosol generating device; a gas pressure sensing port is provided on the channel wall of the gas channel; The airflow detection component includes an air pressure sensor, which is arranged on the outside of the gas channel and connected to the gas channel through the air pressure sensing port; a protective tongue protruding into the gas channel is provided on the channel wall of the gas channel, and the protective tongue includes a tongue tip and a tongue root connected to the channel wall; the protective tongue is located at the air pressure sensing port; in the airflow direction in the gas channel when the aerosol in the atomization chamber is inhaled, the tongue root is located on the downstream side of the air pressure sensing port, and the tongue root is located downstream of the tongue tip, so that the protective tongue protects the air pressure sensing port.

2. The airflow detection assembly according to claim 1, characterized in that: The protective tongue covers the air pressure sensing port.

3. The airflow detection assembly according to claim 2, characterized in that: The tongue root and the side edges of the protective tongue are connected to the channel wall of the gas channel, the tongue tip and the channel wall of the gas channel form a connecting opening, and the air pressure sensing port is connected to the gas channel through the connecting opening.

4. The airflow detection assembly according to claim 1, 2 or 3, characterized in that: The airflow detection component includes an airway tube, the channel in the airway tube forms at least a part of the gas channel, the airflow detection component includes a sealing seat configured on the airway tube, the air pressure sensor is installed on the sealing seat, and the protective tongue is located on the sealing seat.

5. The airflow detection assembly according to claim 4, characterized in that: The sealing seat includes an airway sealing tube in the airway tube and a sensor mounting portion extending out of the airway tube. The airway tube and the airway sealing tube are sleeved together and sealed. The sensor mounting portion has a mounting groove, and the air pressure sensor is mounted in the mounting groove.

6. The airflow detection assembly according to claim 1, 2 or 3, characterized in that: The airflow detection component includes an airway tube, the channel in the airway tube forms at least a part of the gas channel, the airflow detection component includes a first base and a second base, the first base and the second base are aligned and enclose a part of the gas channel, and the airway tube is inserted on the first base.

7. The airflow detection assembly according to claim 1, 2 or 3, characterized in that: The gas channel has at least one corner air channel; when the aerosol in the atomization chamber is inhaled, in the air flow direction of the gas channel, the air pressure sensing port is located upstream of at least one corner air channel.

8. The airflow detection assembly according to claim 7, characterized in that: The gas channel includes a first airway segment, a second airway segment and a third airway segment, and the first airway segment, the second airway segment and the third airway segment are arranged in sequence, the first airway segment is used to communicate with the bottom of the atomization chamber, and the connection between the second airway segment and the first airway segment and the connection between the second airway segment and the third airway segment both form the corner airway; the first airway segment and the third airway segment extend in the same direction; the air pressure sensing port is located on the third airway segment, and when the aerosol in the atomization chamber is inhaled, the airflow direction in the first airway segment is opposite to the airflow direction in the third airway segment.

9. The airflow detection assembly according to claim 8, characterized in that: One end of the second airway segment is the first end, and the other end is the second end. The first end is connected to the first airway segment, and the second end is connected to the third airway segment. The second airway segment gradually tilts away from the atomization chamber in a direction from the first end to the second end.

10. An aerosol generating device, characterized in that: The device comprises a device shell, an electric heater, a device circuit and an airflow detection component as described in any one of claims 1 to 9, wherein the device shell has an atomization chamber, the electric heater is used to heat an aerosol-generating matrix in the atomization chamber to generate an aerosol, and the device circuit controls the operation of the electric heater in response to the detection result of the air pressure sensor.

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