CN216723136U - Heating assembly and aerosol generating device - Google Patents

Abstract

The utility model relates to a heating assembly and an aerosol generating device, wherein the heating assembly comprises a heating pipe, a heating cavity for accommodating and heating aerosol forming substrate is formed on the inner wall surface of the heating pipe, and at least two air passage convex strips are formed on the inner surface of the cavity wall of the heating cavity in a protruding manner. When the aerosol-forming substrate is received in the heating chamber, an air passage is formed between the outer surface of the aerosol-forming substrate and the inner surface of the wall of the heating chamber between at least one set of two air passage ribs, thereby ensuring smooth air flow during suction.

Description

Heating element and aerosol generating device

technical field

The utility model relates to the field of atomization, in particular to a heating assembly and an aerosol generating device.

Background technique

The heat-not-burn atomization device is an aerosol generating device that heats the atomized material by a low-temperature heat-not-burn method to form a smokeable mist. The heating assembly of the heat-not-burn atomizing device generally includes a heating tube for accommodating the aerosol-forming substrate and a heating element extending into the heating tube and inserting into the aerosol-forming substrate for heating. When the traditional heating assembly accommodates the aerosol-forming substrate, the outer peripheral surface of the aerosol-forming substrate is in contact with the inner peripheral surface of the heating tube, which is likely to cause problems such as unsmooth airflow and laborious suction.

Utility model content

The technical problem to be solved by the present invention is to provide an improved heating assembly and an aerosol generating device having the heating assembly in view of the above-mentioned defects of the prior art.

The technical solution adopted by the present invention to solve the technical problem is as follows: constructing a heating assembly, including a heating tube, the inner wall surface of the heating tube is formed with a heating cavity for accommodating and heating the aerosol-forming matrix, and the heating cavity is At least two airway protruding strips are formed on the inner surface of the cavity wall; when the aerosol-forming substrate is accommodated in the heating chamber, the outer surface of the aerosol-forming substrate and at least one set of two An air passage is formed between the inner surfaces of the cavity walls of the heating cavity between the air passage protruding strips.

In some embodiments, there are a plurality of the air passage protruding strips, and the plurality of the air passage protruding strips are evenly distributed along the circumference of the heating cavity.

In some embodiments, the inner contours of the same horizontal section of the at least two airway ridges are located on the same circumference.

In some embodiments, the heating chamber has a first end for inserting the aerosol-forming substrate and a second end disposed opposite the first end, the heating chamber having a cavity at the first end The diameter of the circle enclosed by the inner contour of the same horizontal cross-section in the direction from the first end to the second end of the at least two airway protruding strips gradually decreases.

In some embodiments, each of the airway ridges includes at least two sections of ridges, and the at least two sections of ridges have different slope angles.

In some embodiments, the at least two sections of ridges include a first section of ridges close to the first end and a second section of ridges close to the second end, the first section of ridges, the second section of ridges The two-stage ridges have different slope angles.

In some embodiments, the inclination angle of the inclined plane of the first section of ridges is greater than or equal to the inclination angle of the inclined plane of the second section of ridges.

In some embodiments, the inclination angle of the inclined plane of the first section of ridges is 10-40 degrees.

In some embodiments, the inclination angle of the inclined plane of the second section of ridges is 1-10 degrees.

In some embodiments, each of the airway ridges extends along an axial direction of the heating cavity.

In some embodiments, the heating assembly further includes a heating element extending into the heating cavity.

In some embodiments, the heating element is in the shape of a column or a sheet.

In some embodiments, the heating element is cylindrical.

In some embodiments, the heating assembly further includes a base, and the heating element is fixed on the base and accommodated in the heating cavity.

In some embodiments, the surface of the heating component facing away from the heating body is provided with an electrical contact point that is electrically connected to the heating body.

The present invention also provides an aerosol generating device, which includes a casing and the heating assembly according to any one of the above, which is arranged on the casing.

In some embodiments, the heating assembly is removably disposed in the housing.

In some embodiments, the heating assembly is slidably disposed in the housing.

In some embodiments, the aerosol generating device further includes an upper cover assembly disposed at one end of the housing, the upper cover assembly is formed with an insertion hole into which the aerosol-forming substrate is inserted.

In some embodiments, the upper cover assembly is slidably and detachably accommodated in the accommodating cavity.

The implementation of the present utility model has at least the following beneficial effects: when the aerosol-forming matrix is accommodated in the heating cavity, an airway is formed between the outer surface of the aerosol-forming matrix and every two adjacent airway protruding strips, so as to ensure the suction during suction. Air flow is smooth.

In addition, the diameter of the circle enclosed by the inner contour of the same horizontal section of the at least two airway protruding strips from the first end to the second end gradually decreases, which can also form a guiding effect when the aerosol-forming substrate is inserted.

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings and embodiments, in the accompanying drawings:

1 is a schematic three-dimensional structure diagram of an aerosol generating device in some embodiments of the present invention when the dust cover is closed;

FIG. 2 is a schematic three-dimensional structure diagram of the aerosol generating device shown in FIG. 1 when the dust cover is opened and an aerosol-forming substrate is inserted;

Fig. 3 is the exploded structure schematic diagram of the aerosol generating device shown in Fig. 2;

Fig. 4 is the exploded structure schematic diagram of the heating assembly in Fig. 2;

Fig. 5 is the cross-sectional structure schematic diagram of the heating assembly in Fig. 2;

Fig. 6 is the exploded structure schematic diagram of the elastic mechanism in Fig. 2;

Fig. 7 is the A-A longitudinal cross-sectional schematic diagram of the aerosol generating device shown in Fig. 2;

Fig. 8 is the A-A longitudinal sectional schematic diagram when the aerosol generating device shown in Fig. 2 is moved up to the second position after unlocking;

Figure 9 is a schematic cross-sectional view of the aerosol generating device shown in Figure 2;

FIG. 10 is a schematic diagram of a longitudinal cross-sectional view along B-B of the aerosol generating device shown in FIG. 2;

FIG. 11 is a B-B longitudinal cross-sectional schematic diagram of the aerosol generating device shown in FIG. 2 when it is unlocked and moved upward to a second position.

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

In the description of the present invention, it should be understood that the terms "front", "rear", "upper", "lower", "left", "right", "top", "bottom", "inside", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings or the orientation or positional relationship that is usually placed when the product of the present invention is used, and is only for the convenience of describing the technical solution, not for indicating Or imply that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "vertical", "horizontal", "longitudinal", "horizontal" and similar expressions used in the present invention are for illustrative purposes only and do not represent the only embodiment.

It should also be noted that, unless otherwise expressly specified and limited, terms such as "installation", "connection", "connection", "fixation" and "setup" should be understood in a broad sense, for example, it may be a fixed connection, or a It can be a detachable connection or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two elements or the interaction relationship between the two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element, or one or more intervening elements may also be present. The terms "first", "second", "third", etc. are only for the convenience of describing the technical solution, and should not be understood as indicating or implying relative importance or implying the number of indicated technical features, thus, Features defined as "first", "second", "third" etc. may expressly or implicitly include one or more of that feature. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

FIGS. 1-11 show an aerosol generating device 1 in some embodiments of the present invention, and the aerosol generating device 1 can be used for low-temperature baking and heating of the aerosol-forming substrate 9 inserted therein, so as to prevent combustion without burning. The aerosol extract in the aerosol-forming matrix 9 is released in the state of . The aerosol-generating device 1 may be approximately in the shape of an elliptical cylinder, and the aerosol-forming substrate 9 may be in the shape of a cylinder and may include a solid substrate of plant leaves. It can be understood that, in other embodiments, the aerosol generating device 1 is not limited to be in the shape of an elliptical column, and it can also be in other shapes such as a column shape, a square column shape, and the like.

As shown in FIGS. 1-3 and 7 , the aerosol generating device 1 may include a cylindrical casing 10 , an upper cover assembly 20 , a heating assembly 30 , a battery 70 and a circuit board 80 accommodated in the casing 10 . A battery 70 may be disposed at the lower portion of the housing 10 for providing energy to the heating assembly 30 . The circuit board 80 can be disposed in the middle of the casing 10 , and a related control circuit is arranged on the circuit board 80 . A switch 13 and a display screen 12 can also be provided on the housing 10 . The switch 13 is used to receive the user's operation to activate the circuit board 80 to control the battery 70 to supply power to the heating assembly 30 . The display screen 12 can be used to display the status of the aerosol generating device 1 or to prompt the user.

A receiving cavity 100 is formed on the upper end of the casing 10 , and an opening 101 is formed at the top of the receiving cavity 100 . An insertion hole 210 for inserting the aerosol-forming substrate 9 is formed on the upper cover assembly 20 , a heating cavity 310 for receiving and heating the aerosol-forming substrate 9 is formed in the heating assembly 30 , and the aerosol-forming substrate 9 can be inserted through the insertion hole 210 into the heating chamber 310. After the heating assembly 30 is electrified to generate heat, the heat can be transferred to the aerosol-forming substrate 9 , so as to realize the baking and heating of the aerosol-forming substrate 9 . The heating method of the heating element 30 is not limited, for example, it may be resistance heating, electromagnetic heating, infrared radiation heating or composite heating.

The upper cover assembly 20 is detachably installed in the receiving cavity 100 and can slide back and forth between the first position and the second position. The upper cover assembly 20 includes an upper cover 21 which is slidably arranged on the receiving cavity 100 up and down, and a dust cover 22 which is slidably arranged on the upper side of the upper cover 21 . An insertion hole 210 is formed through the upper cover 21 in the longitudinal direction, and the shape and size of the insertion hole 210 can be adapted to the aerosol-forming substrate 9 . When the upper cover assembly 20 is in the first position, the upper cover 21 is accommodated in the receiving cavity 100 . When the upper cover assembly 20 is in the second position, the upper cover 21 is at least partially exposed from the accommodating cavity 100 , and at this time, the upper cover assembly 20 can be pulled out from the accommodating cavity 100 .

The dust cover 22 is used to cover or expose the jack 210 . When the aerosol generating device 1 is not needed, the dust cover 22 can be pushed to cover the jack 210 to prevent dust from entering the jack 210 . When needed, the dust cover 22 can be pushed to expose the socket 210 so that the aerosol-forming substrate 9 can be inserted from the socket 210 .

As shown in FIGS. 5 , 7 and 8 , the heating assembly 30 is detachably installed in the receiving cavity 100 and can slide back and forth between the first position and the second position. In some embodiments, the heating assembly 30 and the upper cover assembly 20 can be disposed separately, the upper end of the heating assembly 30 can be inserted into the insertion hole 210 , and a positioning portion 211 can be formed in the insertion hole 210 , and the positioning portion 211 is connected to the heating element 210 . The upper ends of the components 30 are matched together, so that the upper cover component 20 can press down the heating component 30 to lock the position. The positioning portion 211 can be formed by extending inward from the inner wall of the insertion hole 210 . In this embodiment, there are two positioning portions 211 , and the two positioning portions 211 are respectively located on both sides of the insertion hole 210 in the circumferential direction. In other embodiments, there may also be multiple positioning portions 211 . In other embodiments, the positioning portion 211 may also have one and be annular. It can be understood that, in other embodiments, the heating assembly 30 and the upper cover assembly 20 are not limited to be assembled together in a separable manner, for example, the heating assembly 30 and the upper cover assembly 20 may also be integrated into one body.

The heating assembly 30 may include a heating pipe 31 , a base 33 disposed on the bottom of the heating pipe 31 , and a heating element 32 disposed on the base 33 . The heating tube 31 is tubular, and its inner wall defines a heating cavity 310 for accommodating the aerosol-forming substrate 9 . The inner wall surface of the heating tube 31 may protrude inwardly to form an annular protrusion 315. When the aerosol-forming substrate 9 is accommodated in the heating chamber 310, the lower end surface of the aerosol-forming substrate 9 may abut against the upper end surface of the annular protrusion 315. superior. A limiting flange 313 matched with the positioning portion 211 may be formed on the outer wall of the upper end of the heating tube 31 . The limiting flange 313 can push the heating assembly 30 to move down under the pressing force of the positioning portion 211 , and can slide on the sliding member 40 . Push the heating assembly 30 to move up. In some embodiments, the limiting flange 313 may be annular and formed by the outer wall surface of the upper end of the heating tube 31 protruding radially outward. The lower end surface of the positioning portion 211 can abut on the limiting flange 313 , and the upper cover assembly 20 can be pressed downward to push the heating assembly 30 to move downward in a direction away from the opening 101 of the receiving cavity 100 . In other embodiments, the positioning portion 211 may also abut against the upper end surface of the heating tube 31 , so that the heating tube 31 may not be provided with the limiting flange 313 .

In some embodiments, the inner surface of the cavity wall of the heating cavity 310 may further protrude with at least two air passage protruding strips 311 , and each air passage protruding strip 311 extends along the axial direction of the heating cavity 310 . After the aerosol-forming substrate 9 is accommodated in the heating chamber 310, the outer surface of the aerosol-forming substrate 9 can abut against at least one set of two airway protruding strips 311, and the outer surface of the aerosol-forming substrate 9 is in contact with the at least one An air passage 312 for gas circulation is formed between the two air passage protruding strips 311 . Specifically, a gap is formed between the outer surface of the aerosol-forming substrate 9 and the inner surface of the cavity wall of the heating cavity 310 between the at least one group of two airway ridges 311 , and the gap forms the airway 312 . In this way, the airflow can be guaranteed to flow smoothly during suction. Preferably, there are a plurality of air passage protruding strips 311 , and the plurality of air passage protruding strips 311 can be evenly distributed along the circumferential direction of the heating cavity 310 . In some embodiments, the number of airway ribs 311 is 6-12. An air channel 312 is respectively formed between the outer surface of the aerosol-forming substrate 9 and every two adjacent air channel protruding strips 311 , so that the airflow can be more smoothly circulated during suction.

In some embodiments, the inner contours of the same horizontal section of the plurality of airway protruding strips 311 are located on the same circumference. The heating chamber 310 has a first end and a second end oppositely disposed along the axial direction, the first end has a cavity opening 3101 and is used for inserting the aerosol-forming substrate 9, that is, the first end is the end close to the upper cover assembly 20 , the second end is the end close to the base 33 . The diameter of the circle enclosed by the inner contour of the same horizontal cross-section from the first end to the second end of the plurality of airway protruding strips 311 can be gradually reduced, so that the guiding effect when the aerosol-forming substrate 9 is inserted can be formed. . In this embodiment, each airway ridge 311 may include a first-section ridge 3111 and a second-section ridge 3112 axially connected to the lower end of the first-section ridge 3111 . The first section of ridges 3111 and the second section of ridges 3112 may have different slope angles, wherein the slope angle α of the first section of ridges 3111 may be greater than or equal to the slope angle β of the second section of ridges 3112 . In some embodiments, the inclination angle α of the inclined plane of the first section of the ridges 3111 may be 10-40 degrees, and the inclination angle β of the inclined plane of the second section of the ridges 3112 may be 1-10 degrees. The inclination angle of the inclined plane of the first-section convex strip 3111 located above is relatively large, which can facilitate the rapid introduction of the aerosol-forming matrix 9 . The inclination angle of the inclined plane of the second section of convex strips 3112 located below is relatively small, which can realize the circumferential positioning of the aerosol-forming substrate 9 and form an air channel 312 for gas circulation. In other embodiments, each airway ridge 311 may also be formed by connecting at least three sections of ridges in sequence along the axial direction, and the at least three sections of ridges may have different slope angles, wherein the slope angle of the upper section of the ridges It can be greater than or equal to the inclination angle of the inclined plane of a section of protruding strip located below it.

As shown in FIG. 4 , the base 33 can be embedded in the bottom opening of the heating pipe 31 and can be snap-connected to the heating pipe 31 . Specifically, at least one buckle portion 332 may be formed on the outer peripheral surface of the base 33 to protrude outward, and at least one snap groove 314 is formed on the heating tube 31 corresponding to the at least one buckle portion 332 . A card slot 314 is fastened to each other, so that the heating tube 31 and the base 33 are fastened and fixed to each other. In this embodiment, there are two clamping slots 314 and can be respectively disposed on both sides of the heating tube 31 in the circumferential direction. Correspondingly, two buckles are formed on the two circumferential sides of the base 33 corresponding to the two clamping slots 314 respectively. Section 332. In other embodiments, the heating tube 31 and the base 33 can also be integrally formed.

The heating body 32 can be in the shape of a sheet or a column, the lower end of the heating body 32 can be inserted into the base 33 to be fixed, and the upper end of the heating body 32 is accommodated in the heating cavity 310 and can be inserted into the aerosol forming matrix 9 to form the aerosol. Substrate 9 is heated. In this embodiment, the heating element 32 may be cylindrical and may have a conical head 321 , and the conical head 321 may facilitate insertion into the aerosol-forming substrate 9 . Since the heating element 32 is cylindrical, after the aerosol-forming substrate 9 is heated, the aerosol-forming substrate 9 can be manually rotated to separate the aerosol-forming substrate 9 from the heated bonding portion of the heating element 32, and then the aerosol-forming substrate 9 is pulled out. The sol forms the matrix 9 .

As shown in FIGS. 4 , 7 and 8 , in some embodiments, the aerosol generating device 1 may further include at least two elastic electrodes 81 disposed in the housing 10 and electrically connected to the circuit board 80 . The surface of the base 33 opposite to the heating cavity 310 , that is, the bottom surface of the base 33 may be provided with at least two electrical contact points 34 electrically connected to the heating body 32 . The heating body 32 can be connected to or disconnected from the at least two elastic electrodes 81 via the at least two electrical contact points 34 . Further, there may be multiple electrical contact points 34 and elastic electrodes 81 , and the multiple electrical contact points 34 and multiple elastic electrodes 81 may also be used for electrical connection with electronic components such as temperature detection elements provided on the heating body 32 .

As shown in FIG. 5 , in some embodiments, the heating assembly 30 may further include a sealing ring 35 , and the sealing ring 35 may be made of an elastic material such as silica gel. The sealing ring 35 can be tightly sleeved outside the heating body 32 and clamped between the lower end surface of the annular protrusion 315 and the upper end surface of the base 33 .

As shown in FIGS. 3 , 6 , 9 , 10 and 11 , the aerosol generating device 1 may further include an elastic mechanism 50 disposed in the casing 10 , a bracket assembly 60 disposed in the casing 10 and slidably disposed in the casing 10 . the slider 40. The elastic mechanism 50 has a locking position and a releasing position, wherein when the elastic mechanism 50 is switched from the locking position to the releasing position, the elastic mechanism 50 can push the upper cover assembly 20 and the heating assembly 30 to move upward toward the opening 101 of the receiving cavity 100 .

In some embodiments, the elastic mechanism 50 may include a first elastic component 51 and a second elastic component 52 that cooperate with each other. The first elastic component 51 is supported under the sliding member 40 and can push the sliding member 40 to move upward, and can move downward under the pressing of the sliding member 40 . The first elastic component 51 may include a push rod 511 vertically movable in the housing 10 and a first elastic member 512 connected with the push rod 511 . The second elastic component 52 is used for locking or releasing the first elastic component 51 , and may include a locking piece 521 which is laterally movably disposed in the housing 10 and a second elastic piece 523 connected with the locking piece 521 . The push rod 511 and the locking member 521 may be respectively formed with a first engaging portion 5114 and a second engaging portion 5213 that are snap-fitted with each other. The first engaging portion 5114 and the second engaging portion 5213 are engaged with or disengaged from each other. , to lock or release the first elastic component 51 . When the push rod 511 and the locking member 521 are engaged with each other, the upper end surface of the first engaging portion 5114 is pressed against the lower portion of the second engaging portion 5213 under the elastic force of the first elastic member 512 and the second elastic member 523 the end surface, thereby locking the first elastic component 51 . When the locking member 521 moves inward in the lateral direction under the action of the external force, the second engaging portion 5213 moves inward in the lateral direction to disengage from the first engaging portion 5114, thereby releasing the locking of the first elastic component 51, and the push rod 511 moves upward under the action of the elastic force of the first elastic member 512 , pushes the sliding member 40 to move, and then pushes the upper cover assembly 20 and the heating assembly 30 to move.

Specifically, the first elastic component 51 and the second elastic component 52 can be installed in the bracket component 60 . The bracket assembly 60 may include a first bracket 61 and a second bracket 62 installed in cooperation with each other. Both the battery 70 and the circuit board 80 can be accommodated between the first bracket 61 and the second bracket 62 . A support member 66 can also be fixedly installed in the bracket assembly 60 for supporting the push rod 511 and the first elastic member 512 . The push rod 511 is vertically slidably disposed in the bracket assembly 60 , and may include a first rod section 5111 , a second rod section 5112 and a third rod section 5113 which are connected in sequence from top to bottom in the axial direction. Wherein, the outer cross-sectional size of the second rod segment 5112 is larger than the outer cross-sectional size of the first rod segment 5111 and the third rod segment 5113 . The bracket assembly 60 has a top wall 63, and the top wall 63 is provided with a through hole 64 through which the first rod segment 5111 can slide. size fits. The first rod segment 5111 passes through the through hole 64 and abuts against the bottom wall of the sliding member 40 , so as to push the sliding member 40 to move upward.

The third rod segment 5113 can be cylindrical, and the lower end of the third rod segment 5113 can be vertically slidably inserted into the support member 66 . The first elastic member 512 can be a cylindrical spring and is sleeved on the third rod segment 5113, the upper end of the first elastic member 512 can abut against the lower end surface of the second rod segment 5112, and the lower end of the first elastic member 512 can abut against the upper end face of the support member 66 . The first elastic member 512 has a compressed state and a released state, wherein when the elastic mechanism 50 is in the locking position, the first elastic member 512 is in a compressed state. When the elastic mechanism 50 is switched from the locking position to the releasing position, the length of the first elastic member 512 increases to generate an elastic restoring force, which acts on the push rod 511 to move upward. In other embodiments, the first elastic member 512 may also be a disc spring, a shrapnel, a torsion spring, or other structures capable of elastic deformation. The elastic deformation generates an elastic restoring force, and the elastic restoring force acts on the push rod 511 to make It moves up.

The first engaging portion 5114 may be formed on the second rod segment 5112 . The second rod section 5112 may be substantially square and cylindrical, and a side of the second rod section 5112 facing the locking member 521 may be recessed inwardly to form a slot 5115 to avoid interference between the second rod section 5112 and the locking member 521 . The inner wall of the slot 5115 faces inward and protrudes to form the first clamping portion 5114 .

A push button 11 may be disposed on the casing 10 corresponding to the second elastic component 52 , and the push button 11 and the display screen 12 may be disposed on both sides of the casing 10 respectively. When the pressing key 11 is pressed by an external force, the locking member 521 can be pushed to move inward in the lateral direction. After releasing the pressing, the locking member 521 and the pressing key 11 can be moved and reset laterally outward under the elastic force of the two elastic members 523 . The locking member 521 may include a main body portion 5211 and a second engaging portion 5213 formed by extending outward from one side of the main body portion 5211 . The main body portion 5211 may be in the shape of a square cylinder, and a side of the main body portion 5211 facing the pressing key 11 extends inward in the lateral direction to form an installation hole 5212 for installing the second elastic member 523 . The lower end surface of the first engaging portion 5114 and the upper end surface of the second engaging portion 5213 may also be respectively formed with a first guiding inclined surface 5116 and a second guiding inclined surface 5214 . When the push rod 511 is pressed down, the locking member 521 can be pushed to move inward in the lateral direction through the cooperation of the first guiding inclined surface 5116 and the second guiding inclined surface 5214, so that the first engaging portion 5114 can move down to the second engaging portion. The lower part of the part 5213 is engaged with the second engaging part 5213 .

The second elastic component 52 may further include a mounting member 52 fixedly mounted in the bracket component 60 . The mounting 52 can be in the shape of a sheet for limiting the second elastic member 523 . The second elastic member 523 can be a spring and can be disposed in the installation hole 5212 .

The sliding member 40 may have a substantially elliptical cylindrical shape, and the sliding member 40 is slidably installed in the housing 10 and can slide back and forth between the first position and the second position. A receiving hole 41 can also be formed through the sliding member 40 in the longitudinal direction, and the heating element 30 is inserted through the receiving hole 41 . A limiting structure may also be provided in the sliding member 40 to limit the maximum upward movement position of the sliding member 40 and prevent the sliding member 40 from coming out of the housing 10 . The limiting structure can be fixedly connected with the bracket assembly 60 , and can include a limiting column 65 slidably disposed in the sliding member 40 along the longitudinal direction and a limiting member 45 extending laterally from the limiting column 65 . The limiting post 65 can be formed by extending upward from the top wall 63 of the bracket assembly 60 . The limiting member 45 can be generally in the shape of a laterally arranged sheet, and can be fixedly installed on the top side of the limiting column 65 .

The sliding member 40 can be installed against the bottom of the upper cover 21 , and can be magnetically connected with the upper cover 21 . When the sliding member 40 and the upper cover assembly 20 are in the second position, the upper cover assembly 20 is only partially exposed outside the accommodating cavity 100 of the housing 10 , and the upper cover assembly 20 and the sliding member 40 are magnetically attracted without jumping from the accommodating cavity 100 . out. The upper cover 21 may also be provided with a first magnetic attraction member 23 for magnetically connecting with the sliding member 40 , and/or, the sliding member 40 may further be provided with a second magnetic attraction member for magnetically connecting with the upper cover 21 . 43. The first magnetic element 23 can be a magnet and can be embedded in the bottom of the upper cover 21 . The second magnetic attraction member 43 can be a magnet and can be suspended in the sliding member 40 , and can be fixedly installed on the lower side of the limiting member 45 . The limiting member 45 can be made of a magnetic material that can be attracted by the second magnetic attraction member 43 , for example, it can be made of iron material.

As shown in FIG. 2 , FIG. 7 , FIG. 9 and FIG. 10 , when the aerosol generating device 1 is normally used, the elastic mechanism 50 is in the locked position, and the first engaging portion 5114 of the push rod 511 is engaged with the second engaging portion of the locking member 521 . The connecting portions 5213 are engaged with each other. The upper cover assembly 20 , the heating assembly 30 , and the sliding member 40 are all in the first position, and the upper cover assembly 20 and the sliding member 40 are attracted to each other by magnetic force. The heating element 30 is located in the opening 101 of the receiving cavity 100 , the electrical contact point 34 at the bottom of the heating element 30 is connected to the elastic electrode 81 provided in the casing 10 , and the upper end surface of the limiting flange 313 on the outer edge of the heating pipe 31 abuts against On the lower end surface of the positioning portion 211 in the insertion hole 210 , a gap may be formed between the lower end surface of the limiting flange 313 and the upper end surface of the sliding member 40 . In other embodiments, the lower end surface of the limiting flange 313 may also abut against the upper end surface of the sliding member 40 . The upper cover 21 can be completely accommodated in the accommodating cavity 100 , and the top of the upper cover 21 can be located in the opening 101 of the accommodating cavity 100 or can be flush with the opening 101 of the accommodating cavity 100 . In other embodiments, the upper cover 21 may also be partially exposed outside the opening 101 of the receiving cavity 100 . The dust cover 22 can be exposed outside the casing 10 to facilitate user operation.

As shown in FIGS. 8 and 11 , when the heating element 30 needs to be cleaned after the aerosol generating device 1 has been used for a period of time, the pressing button 11 on the surface of the housing 10 can be pressed inward to push the locking member 521 to move inward in the lateral direction. , the second engaging portion 5213 of the locking member 521 and the first engaging portion 5114 of the push rod 511 are disengaged from each other, and the push rod 511 moves upward under the elastic force of the first elastic member 512, pushing the sliding member 40, The cover assembly 20 and the heating assembly 30 move upward to the second position. At this time, both the upper cover assembly 20 and the heating assembly 30 are partially exposed outside the opening 101 of the receiving cavity 100 . After the cleaning is completed, put the heating assembly 30 and the upper cover assembly 20 into the receiving cavity 100 in turn, and then press down the upper cover assembly 20, push the heating assembly 30 and the sliding member 40 to move down to the first position again, and pass the sliding member 40 Push the push rod 511 to move down, so that the first engaging portion 5114 of the push rod 511 and the second engaging portion 5213 of the locking member 521 are re-engaged together.

It can be understood that the above technical features can be used in any combination without limitation.

The above examples only represent the preferred embodiments of the present invention, and their descriptions are more specific and detailed, but should not be construed as limiting the scope of the present invention; it should be pointed out that for those of ordinary skill in the art , under the premise of not departing from the concept of the present utility model, the above-mentioned technical characteristics can be freely combined, and some deformations and improvements can also be made, and these all belong to the protection scope of the present utility model; All equivalent transformations and modifications made shall fall within the scope of the claims of the present invention.

Claims (20)

1. A heating assembly, characterized in that it comprises a heating tube (31), the inner wall of the heating tube (31) is formed with a heating cavity (310) for accommodating and heating an aerosol-forming substrate (9), the At least two airway protruding strips (311) are formed on the inner surface of the cavity wall of the heating cavity (310); when the aerosol-forming substrate (9) is accommodated in the heating cavity (310), the An airway (312) is formed between the outer surface of the aerosol-forming substrate (9) and the inner surface of the cavity wall of the heating cavity (310) between at least one set of two airway ridges (311) . 2. The heating assembly according to claim 1, characterized in that there are a plurality of said airway protruding strips (311), and a plurality of said airway protruding strips (311) are along the circumference of the heating cavity (310) distributed at even intervals. 3 . The heating assembly according to claim 1 , wherein the inner contours of the same horizontal section of the at least two airway protruding strips ( 311 ) are located on the same circumference. 4 . 4. The heating assembly according to claim 1, wherein the heating chamber (310) has a first end for inserting the aerosol-forming substrate (9) and a first end disposed opposite to the first end The second end, the heating cavity (310) has a cavity opening (3101) at the first end, and the at least two airway protruding strips (311) are in the direction from the first end to the second end The diameter of the circle enclosed by the inner contour of the same horizontal section gradually becomes smaller. 5 . The heating assembly according to claim 4 , wherein each of the airway ridges ( 311 ) comprises at least two sections of ridges, and the at least two sections of ridges have different slope angles. 6 . 6 . The heating assembly according to claim 5 , wherein the at least two sections of ridges comprise a first section of ridges ( 3111 ) close to the first end and a second section of ridges close to the second end. 7 . A strip (3112), the first section of the convex strip (3111) and the second section of the convex strip (3112) have different slope angles. 7 . The heating assembly according to claim 6 , wherein the inclination angle of the inclined plane of the first-stage convex strip ( 3111 ) is greater than or equal to the inclined surface inclination angle of the second-section convex strip ( 3112 ). 8 . 8 . The heating assembly according to claim 6 , wherein the inclination angle of the inclined plane of the first-stage convex strip ( 3111 ) is 10-40 degrees. 9 . 9 . The heating assembly according to claim 6 , wherein the inclination angle of the inclined plane of the second section of protruding strips ( 3112 ) is 1-10 degrees. 10 . 10. The heating assembly according to claim 1, wherein each of the air passage protruding strips (311) extends along the axial direction of the heating cavity (310). 11. The heating assembly according to any one of claims 1-10, characterized in that, the heating assembly further comprises a heating body (32) extending into the heating cavity (310). 12 . The heating assembly according to claim 11 , wherein the heating element ( 32 ) is in the shape of a column or a sheet. 13 . 13. The heating assembly according to claim 11, wherein the heating element (32) is cylindrical. 14. The heating assembly according to claim 11, characterized in that, the heating assembly further comprises a base (33), and the heating element (32) is fixed on the base (33) and accommodated in the base (33) in the heating chamber (310). 15. The heating assembly according to claim 11, characterized in that, a surface of the heating assembly (30) facing away from the heating body (32) is provided with an electrical contact point that is electrically connected to the heating body (32) (34). 16. An aerosol generating device, characterized in that it comprises a casing (10) and the heating assembly according to any one of claims 1-15, which is arranged in the casing (10). 17. The aerosol generating device according to claim 16, wherein the heating assembly is detachably arranged in the housing (10). 18. The aerosol generating device according to claim 16, wherein the heating assembly is slidably arranged in the housing (10). 19. The aerosol generating device according to claim 16, characterized in that, the aerosol generating device further comprises an upper cover assembly (20) disposed at one end of the housing (10), the upper cover assembly (20) ) is formed with an insertion hole (210) into which the aerosol-forming substrate (9) is inserted. 20. The aerosol generating device according to claim 19, wherein the upper cover assembly (20) is slidably and detachably accommodated in the accommodating cavity (100).

Images