EP4129094A1

EP4129094A1 - Heating device and aerosol forming device

Info

Publication number: EP4129094A1
Application number: EP20927880.3A
Authority: EP
Inventors: Yancheng LIAO; Yongbao YUAN
Original assignee: Shenzhen Merit Technology Co Ltd
Current assignee: Shenzhen Maishi Technology Co Ltd
Priority date: 2020-03-25
Filing date: 2020-12-24
Publication date: 2023-02-08
Also published as: KR20220118523A; CN111387566B; CN111387566A; JP2023511919A; WO2021190011A1; EP4129094A4; JP7431985B2

Abstract

A heating device (100) includes: a cover (110) including a proximal end (11) provided with an air inlet (1110) and a distal end (12) distant from the proximal end (11); a receiving cavity (121), the proximal end (11) being provided with a feed port (1111), the receiving cavity (121) being disposed in the cover (110) and communicated with the feed port (1111); a heating element disposed in the cover (110) and extending into the receiving cavity (121); an air inlet passage (130) located in the cover (110) and extending from the air inlet (1110) to the distal end (12); and air outlet passage (131) merges with the end of the air inlet passage (130) close to the distal end (12), and extends to the proximal end (11) through the receiving cavity (121), the air inlet passage (130) being disposed around the outside of the receiving cavity (121).

Description

FIELD

The present disclosure relates to the field of electronic atomization, and particularly to a heating device and an aerosol-generating apparatus.

BACKGROUND

An aerosol-generating apparatus may receive an aerosol-generating article, such as a cigarette. The aerosol-generating article may be heated and atomized to generate aerosol to be inhaled by a user.
The aerosol-generating apparatus typically includes a heating device and a battery assembly removably connected to the heating device. When the aerosol-generating article is heated and the user is inhaling the aerosol through the aerosol-generating apparatus, external air enters an air channel of the heating device from an air inlet of the aerosol-generating apparatus and passes through an aerosol-generating substrate to bring the generated aerosol to the user's mouth. However, in the structure, heat generated by the heating device may be transmitted to a portion of the apparatus held by the user's hand. When a temperature of the portion is excessively high, the user may be uncomfortable.

SUMMARY

The present disclosure provides a heating device and an aerosol-generating apparatus to solve a technical problem that excessive heat, which is generated while the heating device heats the aerosol-generating substrate, is transferred to a portion of the apparatus held by the user's hand.
According to a first aspect, a heating device is provided and includes: a cover, a receiving chamber, a heater, an air inlet channel, and an air outlet channel. The cover includes a proximal end, which is provided with an air inlet port, and a distal end away from the proximal end. The proximal end is provided with a substrate inlet port, the receiving chamber is provided in the cover and communicated with the substrate inlet port, the receiving chamber is configured to receive an aerosol-generating product. The heater is arranged inside the cover and extending from the distal end into the receiving chamber. The air inlet channel is provided in the cover and extending from the air inlet port to the distal end. The air outlet channel is provided in the cover, converging with an end of the air inlet channel near the distal end and extending towards the proximal end along the receiving chamber, wherein the air inlet channel is arranged to surround the exterior of the receiving chamber to absorb heat from the receiving chamber.
In some embodiments, the heating device further includes a receiving tube, arranged inside the cover. The receiving chamber is provided in the receiving tube, and the cover includes: an upper cover, wherein a top of the upper cover is provided with an air inlet port and a substrate inlet port; and a lower cover, arranged inside the upper cover, wherein the receiving tube is disposed between the upper cover and the lower cover, and external air is capable of entering the air inlet channel through the air inlet port and being directed to the air outlet channel via the lower cover.
In some embodiments, the heating device further includes a protective cover, slidably engaged with the lower cover and surrounding the exterior of the receiving tube, and arranged inside the cover. A gap defined between the protective cover and the receiving tube serves as the air inlet channel.
In some embodiments, the protective cover is hollow and comprises a bottom wall near the distal end; the receiving tube is hollow and cylindrical, and opens respectively at its two ends; the upper cover is slidably engaged with the protective cover and the lower cover, one of the two ends of the receiving tube near the distal end abuts against the bottom wall; the lower cover and the bottom wall define a through hole for the heater to extend through; a seal is provided in the through hole of the lower cover; the external air is capable of entering the air inlet channel through the air inlet port, entering a gap between the bottom wall and the lower cover, and being directed by the lower cover and the seal to flow into the through hole of the bottom wall to enter the air outlet channel.
In some embodiments, a gap between the cover and the protective cover serves as a thermal insulation cavity, at least a portion of the thermal insulation cavity is arranged to surround the exterior of the air inlet channel, and the bottom wall is provided with an air hole communicating with the gap between the bottom wall and the lower cover.
In some embodiments, the heating device further includes a fixation seat, arranged inside the cover; and a heater body, wherein an end of the heater body is removably mounted in the fixation seat, and the other end of the heater body is inserted in the receiving chamber.
In some embodiments, the heater body includes an engaging portion, protruding outwardly, and the fixation seat includes: a first fixation seat, arranged with a first step face facing the receiving chamber; a second fixation seat, removably arranged inside the first fixation seat and arranged with a second step face facing the first step face, wherein a receiving cavity is defined between the first step face and the second step face to couple with the engaging portion.
In some embodiments, a portion of the heater body inserted in the receiving chamber is cylindrical, and an end of the portion has a sharp portion.
In some embodiments, the heating device further includes a sliding cover assembly. The sliding cover assembly includes: a sliding cover, slidably arranged on a top of the upper cover and configured to slide to cover or expose the substrate inlet port; a fixing member, arranged inside the upper cover and fixed with the sliding cover, wherein the top of the upper cover is provided with a sliding slot, and the sliding cover and the fixing member which are fixed with each other are slidable along the sliding slot.
In some embodiments, the sliding cover assembly includes: a mounting sheet, disposed between the sliding cover and the top of the upper cover; and a mounting portion, arranged on a top of the receiving tube and provided with an air inlet hole, for the external air, which enters the upper cover from the air inlet port, to enter the air inlet channel.
In some embodiments, the heating device further includes a control device, arranged inside the cover and configured to control the start of the heating device; and a light-emitting member, arranged inside the cover and electrically connected to the control device, wherein a light-emitting state of the light-emitting member corresponds to a working state of the control device.
In some embodiments, the heating device further includes a control member, arranged on an outer surface of the cover and electrically connected to the control device to obtain an operation of the user; and a vibrating member, arranged inside the cover and electrically connected to the control device to feed back control on the control device generated by the control member.
According to a second aspect, an aerosol-generating apparatus is provided and includes a battery tube and the heating device according to any one of above embodiments. The battery tube is configured to supply power for the heating device, enabling the heating device to atomize the aerosol-generating article into smoke
According to the present disclosure, an air inlet channel extends around an outside of a receiving tube. External air may absorb heat of the receiving tube while passing through the air inlet channel to reduce a temperature of a cover body, providing a better user experience. In addition, the external air may be preheated when passing through the air inlet channel, and the preheated external air may improve a heating efficiency when entering the aerosol-generating product, saving energy.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to illustrate technical solutions of embodiments of the present disclosure more clearly, the accompanying drawings for the embodiments are described in brief in the following. Apparently, the following drawings are only some of the embodiments of the present disclosure. Other drawings may be obtained by any ordinary skilled person in the art based on these drawings without any creative work.

FIG. 1 is a perspective view of a heating device according to an embodiment of the present disclosure.
FIG. 2 is a structural schematic view of a cross section of a heating device according to an embodiment of the present disclosure.
FIG. 3 is an enlarged view of a portion A shown in FIG. 2.
FIG. 4 is an enlarged view of a portion B shown in FIG. 2.
FIG. 5 is an enlarged view of a portion of a heating device according to an embodiment of the present disclosure, showing air flowing directions.
FIG. 6 is an exploded view of a portion of a heating device according to an embodiment of the present disclosure.
FIG. 7 is a perspective view of an aerosol-generating apparatus according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

The technical solutions in embodiments of the present disclosure will be clearly and completely described below by referring to the drawings of the embodiments. Apparently, the described embodiments are only a part of, but not all of, the embodiments of the present disclosure. All other embodiments obtained by any ordinary skilled person in the art based on the embodiments of the present disclosure without creative work shall fall within the scope of the present disclosure.
As shown in FIGS. 1-6, FIG. 1 is a perspective view of a heating device according to an embodiment of the present disclosure, FIG. 2 is a structural schematic view of a cross section of a heating device according to an embodiment of the present disclosure, FIG. 3 is an enlarged view of a portion A shown in FIG. 2, FIG. 4 is an enlarged view of a portion B shown in FIG. 2, FIG. 5 is an enlarged view of a portion of a heating device according to an embodiment of the present disclosure, showing air flowing directions, and FIG. 6 is an exploded view of a portion of a heating device according to an embodiment of the present disclosure.
The present disclosure provides a heating device 100, as shown in FIGs. 1-5, the heating device 100 may include a cover 110, a receiving chamber 121, a heater, an air inlet channel 130 and an air outlet channel 131. The cover 110 may include a proximal end 11, which is provided with, an air inlet port 1110 and a distal end 12 away from the proximal end 11. The proximal end 11 may be provided with a substrate inlet port 1111. The air inlet port 1111 may be configured to allow external air to enter the device. The receiving chamber 121 may be provided in the cover 110 and communicated with the substrate inlet port 1111. An aerosol-generating article 300 may be placed into the apparatus through the substrate inlet port 1111 and may be received in the receiving chamber 121. The aerosol-generating article 300 may include an aerosol-generating substrate and a mouthpiece for the user to inhale. The heater may be disposed inside the cover 110 and received into the receiving chamber 121 by extending through the distal end 12. The air inlet channel 130 may be provided in the cover 110 and extend from the air inlet port 1110 towards the distal end 12. The air outlet channel 131 may be provided in the cover 110 and converge with an end of the air inlet channel 130 near the distal end 12. The converged channel may further extend towards the proximal end 11 along the receiving chamber 121. The air inlet channel 130 may extend to surround the exterior of the receiving chamber 121 to absorb heat generated while the heater inside the receiving chamber 121 is heating.
In this way, when the user is inhaling, the aerosol-generating article 300 may be heated, and the external air in a low temperature may enter through the inlet channel 130, absorbing heat of the receiving chamber 120 and subsequently entering the aerosol-generating article 300. On one hand, the external air may absorb the heat of the receiving chamber 120 to reduce a temperature of the cover 110, providing better user experience. On the other hand, the external air may be preheated when passing through the air inlet channel 130. The preheated external air may improve a heating efficiency when entering the aerosol-generating article 300, saving energy. The aerosol-generating article 300 may be for instance a cigarette.
In an embodiment, the heating device 100 may further be provided with a thermal insulation cavity 140. At least a portion of the thermal insulation cavity 140 may surround the exterior of the air inlet channel 130, further providing thermal insulation and reducing the amount of heat transferred from the air inlet channel 130 to the cover 110, further improving the user experience.
In an embodiment, as shown in FIG. 2, FIG. 3 and FIG. 6, the heating device 100 may include a receiving tube 120. The receiving tube 120 may be disposed inside the cover 110. The receiving chamber 121 may be provided in the receiving tube 120. The cover 110 may include an upper cover 111 and a lower cover 112. A top of the upper cover 111 may be provided with the air inlet port 1110 and the substrate inlet port 1111. The lower cover 112 may be disposed inside the upper cover 111. The lower cover 112 and the upper cover 111 may cooperatively define a space to receive the receiving tube 120. The external air may enter the air inlet channel 130 through the air inlet port 1110 and may be directed to the air outlet channel 130 through the lower cover 112. The air inlet port 1110 may be configured to surround the exterior of the substrate inlet port 1111. Alternatively, in another embodiment, the air inlet port 1110 may be independent from the substrate inlet port 1111. The present disclosure does not limit relative positions between the air inlet port 1110 and the substrate inlet port 1111.
In an embodiment, as shown in FIG. 3, the heating device 100 may further include a protective cover 150. The protective cover 150 may be engaged with the lower cover 112, arranged out of and surrounding the receiving tube 120, and arranged inside the cover 110. A gap may be defined between the protective cover 150 and the receiving tube 120 to serve as the air inlet channel 130. A gap may be defined between the cover 110 and the protective cover 150 to serve as the thermal insulation cavity 140. Disposing the protective cover 150 between the cover 110 and the receiving tube 120 may define the air inlet channel 130 and the thermal insulation cavity 140, enabling the heating device 100 to have a compact structure and a reasonable configuration.
In detail, as shown in FIG. 2 and FIG. 5, the protective cover 150 may be hollow and include a bottom wall 151 near the distal end 12. The receiving tube 120 may be hollow and cylindrical, and opens respectively at its two ends. The upper cover 111 is slidably engaged with the protective cover 150 and the lower cover 112. One of the two ends of the receiving tube 120 near the distal end may abut against the bottom wall 151. The lower cover 112 and the bottom wall 151 of the protective cover 150 may define an air opening 1511 for the heater to extend through. A seal 1122 may be provided in a through hole 1121 of the lower cover 112. The external air may enter the air inlet channel 130 through the air inlet port 1110, and enter a gap between the bottom wall 151 of the protective cover 150 and the lower cover 112, and may further be directed through a gap between the lower cover 112 and the seal 1122 to flow towards the air opening 1511 to enter the air outlet channel 131.
Further, the gap between the cover 110 and the protective cover 150 may serve as the thermal insulation cavity 140. At least a portion of the thermal insulation cavity 140 may be surrounded and provided out of the air inlet channel 131. The bottom wall 151 may be provided with the air opening 1511 communicating with the gap between the bottom wall 151 and the lower cover 112.
In an embodiment, as shown in FIG. 2 and FIG. 4, the heater may include a fixation seat 160 and a heater body 170. The fixation seat 160 may be disposed inside the cover 110. An end of the heater body 170 may be removably mounted in the fixation seat 160, and the other end of the heater body 170 may be inserted in the receiving tube 120. In this way, one end of the heater body 170 may be mounted in the fixation seat 160, and the other end of the heater body 170 may be inserted in the aerosol-generating article 300 in the receiving tube 120 to heat the aerosol-generating article 300. Since the heater body 170 can be removably mounted, the heater body 170 may be replaced easily.
Further, as shown in FIG. 4, an end of the heater body 170 may include an engaging portion 171 protruding outwardly. The fixation seat 160 may include a first fixation seat 161 and a second fixation seat 162. The first fixation seat 161 is arranged with a first step face 1611 facing the receiving tube 120. The second fixation seat 162 may be removably arranged inside the first fixation seat 161. The second fixation seat 162 may be arranged with a second step face 1621 facing the first step face 1611. A receiving cavity may be defined between the first step face 1611 and the second step face 1621 to couple with the engaging portion 171. While mounting the heater body 170, the engaging portion 171 of the heater body 170 may be placed on the first step face 1611 of the first fixing base 161, and the second fixing base 162 may be snapped with the first fixing base 161. In this way, the heater body 170 may be mounted. While removing the heater body 170, the second fixation seat 162 may be separated from the first fixation seat 161, and the heater body 170 may be removed from the fixation seat 160. The heater body 170 may be mounted quickly, allowing the heater body 170 to be replaced easily.
Further, a part of the heater body 170 inserted in the receiving chamber 121 may be cylindrical, and the aerosol-generating article 300 may be cylindrical. Therefore, when the aerosol-generating article 300 needs to be removed after use, the aerosol-generating article 300 may be rotated to allow a part of the aerosol-generating article 300 adhered to the heater body 170 to be rotated and separated from the heater body 170. In this way, the aerosol-generating article 300 may be pulled out, and other parts may not be removed, the operation may be easy. When the aerosol-generating article 300 is heated, debris may fall. After the aerosol-generating article 300 is used for a certain period of time, the receiving tube 120 may need to be cleaned. The upper cover 111 may be removed and the receiving tube 120 may be pulled out along with the top cover 111. In this way, the protective cover 150 and the bottom wall 151 may be cleaned, and the debris may not be accumulated to affect placement of the aerosol-generating article 300.
Further, the end of the heater body 170 may have a sharp portion. The sharp portion may allow the heater body 170 to be inserted into the aerosol-generating article 300 easily.
Further, as shown in FIG. 2 and FIG. 4, the lower cover 112 may be provided with the through hole 1121 corresponding to the heater body 170. The fixation seat 160 of the heater body 170 may be disposed under the lower cover 112. The heater body 170 may be inserted into the receiving tube 120 through the through hole 1121. The seal 1122 may be provided in the through hole 1121. The seal 1122 may be configured for sealing, preventing the external air from flowing through the through hole 1121. The seal 1122 may be a sealing silicone.
In an embodiment, as shown in FIG. 6, the heating device 100 may further include a sliding cover assembly 190. The sliding cover assembly 190 may include a sliding cover 192 and a fixing member 194. The sliding cover 192 may be slidably arranged on a top of the top cover 111. The sliding cover 192 may slide to cover or expose the substrate inlet port 1111. The fixing member 194 may be arranged inside the upper cover 111 and fixed with the sliding cover 192, such that the sliding cover 192 and the fixing member 194 may be clamped on the top of the top cover 111. The top of the upper cover 111 may be provided with a sliding slot 1112. The fixing member 194 and the sliding cover 192, which are fixed with each other, may slide along the sliding slot 1112. In more detail, a connection portion between the fixing member 194 and the sliding cover 192 may slide in the sliding slot 1112. In this way, the fixing member 194 and the sliding cover 192 as a whole may slide along the sliding slot 1112. In detail, the fixing member 194 and the sliding cover 192 may be provided with corresponding thread holes. The fixing member 194 and the sliding cover 192 may be secured by a screw.
Further, as shown in FIG. 6, the sliding cover assembly 190 may further include a mounting sheet 191. The mounting sheet may be arranged between the sliding cover 192 and the top of the upper cover 111 to reduce wear of the top of the upper cover 111 caused by the sliding cover 192.
Further, the sliding cover assembly 190 may further include an adhesive body 195. The adhesive body 195 may be arranged between the mounting sheet 191 and the top of the upper cover 192. The adhesive body 195 may be configured to secure the mounting sheet 191 to the top of the upper cover 192.
Further, as shown in FIG. 6, The sliding cover assembly 190 may further include a mounting portion 193. The mounting portion 193 may be integrally formed on a top of the receiving tube 120. The mounting portion 193 may be provided with an air inlet hole 1931. The external air that enters the upper cover 111 from the air inlet port 1110 of the upper cover 111 may enter the air inlet channel 130 through the air inlet hole 1931.
Further, the mounting portion 193 may be fixedly arranged inside the upper cover 111 through a fasten structure. The mounting portion 193 may include a flat portion. The air inlet hole 1931 and a top opening in the top of the receiving tube 120 may both extend through the flat portion. A side of the flat portion away from the top opening of the receiving tube 120 may be arranged with a recessed portion 1933. The recessed portion 1933 may receive an iron sheet 1932. An inner wall of a top of the lower cover 112 may be arranged with a magnet 1121. The upper cover 111 may be arranged outside the lower cover 112 by an attraction between the magnet 1121 and the iron sheet 1932.
In an embodiment, the cover 110 may further include a lower housing 113. The lower housing may be arranged to cover a bottom of the upper cover 111. The lower housing 113 may be fixed with the lower cover 112 through a fasten structure. In this way, the lower housing 113 may cover the bottom of the upper cover 111.
In an embodiment, as shown in FIG. 2, the heating device 100 may further include a control device (not shown in the drawing) and a light-emitting member 182. The control device may be arranged inside the cover 110 and controls the start of the heating device 100. The light-emitting member 182 may be arranged with the cover 110 and electrically connected to the control device. A light emitting state of the light-emitting member 182 may correspond to a working state of the control device. For example, the light-emitting member 182 emitting light may indicate that the control device controls the start of the heating device 100. The light-emitting member 182 not emitting light may indicate that the control device controls the heating device 100 to be in an off state. In this way, user may acknowledge the working state of the heating device 100 easily. In detail, the light-emitting member 182 may be embedded in the cover 110, and a portion of the light-emitting member 182 may be disposed out of the heating device 100. Alternatively, the light-emitting member 182 may be arranged inside the cover 110. A position of the cover 110 corresponding to the light-emitting member 182 may be translucent. The light-emitting member 182 may be an LED lamp.
Further, as shown in FIG. 2, the heating device 100 may further include a control member 183 and a vibrating member 184. The control member 183 may be arranged on an outer surface of the cover 110 and electrically connected to the control device to obtain an operation of the user. In detail, the control member 183 may be a control button. The control device may be controlled by pressing the control button. The vibration member 184 may be arranged inside the cover 110 and electrically connected to the control device to feed back control on the control device generated by the control member 183. When the control device is activated by the control member 183, the vibrating member 184 may vibrate to inform the user that the control device is operating. In addition, after the control device completes operations, the vibrating member 184 may vibrate again to inform the user. in detail, the vibrating member 184 may be a vibrating motor.
In detail, the light-emitting member 182 may be mounted inside the lower cover 112. The upper cover 111 may be provided with an opening corresponding to the light-emitting member 182 to indicate a control status of the control device. The control member 183 may be arranged out of the lower housing 113 to be pressed by the user.
As shown in FIG. 7, FIG. 7 is a perspective view of an aerosol-generating apparatus according to an embodiment of the present disclosure.
The present disclosure further provides an aerosol-generating apparatus 200, as shown in FIG. 7. The aerosol-generating apparatus 200 may include a battery tube 210 and the heating device 100. The heating device 100 may be the heating device 100 in any of the above embodiments. The battery tube 210 may be configured to supply power to the heating device 100 to enable the heating device 100 to atomize the aerosol-generating article 300 to generate smoke. The battery tube 210 may include the lower housing 113 as described above. In the aerosol-generating apparatus 200 of the present disclosure, the external air may pass through the air inlet channel 130 to absorb the heat of the receiving tube 120 to reduce the temperature of the cover 110 to improve the user experience. At the same time, the external air may be preheated when passing through the air inlet channel 130, and the preheated external air may improve the heating efficiency when entering the aerosol-generating article 300, saving energy.
The above shows only examples of the present disclosure and shall not be interpreted as limiting the scope of the present disclosure. Any equivalent structure or equivalent process transformation based on the specification and the accompanying drawings of the present disclosure, directly or indirectly applied in other related fields, shall be equivalently covered by the scope of the present disclosure.

Claims

A heating device, comprising:
a cover, comprising a proximal end provided with an air inlet port and a distal end away from the proximal end;

a receiving chamber, wherein the proximal end is provided with a substrate inlet port, the receiving chamber is provided in the cover and communicated with the substrate inlet port, the receiving chamber is configured to receive an aerosol-generating article;

a heater, arranged inside the cover and extending from the distal end into the receiving chamber;

an air inlet channel, provided in the cover and extending from the air inlet port to the distal end; and

an air outlet channel, provided in the cover, converging with the end of the air inlet channel near the distal end and extending towards the proximal end along the receiving chamber, wherein the air inlet channel is arranged to surround the exterior of the receiving chamber to absorb the heat from the receiving chamber.
The heating device according to claim 1, further comprising a receiving tube, arranged inside the cover, wherein the receiving chamber is provided in the receiving tube, and the cover comprises:
an upper cover, wherein the top of the upper cover is provided with an air inlet port and a substrate inlet port; and

a lower cover, arranged inside the upper cover, wherein the receiving tube is disposed between the upper cover and the lower cover, and external air is capable of entering the air inlet channel through the air inlet port and being directed to the air outlet channel via the lower cover.
The heating device according to claim 2, further comprising:
a protective cover, slidably engaged with the lower cover and surrounding the exterior of the receiving tube, and arranged inside the cover, wherein the gap between the protective cover and the receiving tube serves as the air inlet channel.
The heating device according to claim 3, wherein,
the protective cover is hollow and comprises a bottom wall near the distal end;

the receiving tube is hollow and cylindrical, and opens respectively at its two ends;

the upper cover is slidably engaged with the protective cover and the lower cover;

one of the two ends of the receiving tube near the distal end abuts against the bottom wall;

the lower cover and the bottom wall define a through hole for the heater to extend through;

a seal is provided in the through hole of the lower cover;

the external air is capable of entering the air inlet channel through the air inlet port, entering the gap between the bottom wall and the lower cover, and being directed by the lower cover and the seal to flow into the through hole of the bottom wall to enter the air outlet channel.
The heating device according to claim 4, wherein the gap between the cover and the protective cover serves as a thermal insulation cavity, at least a portion of the thermal insulation cavity is arranged to surround the exterior of the air inlet channel, and the bottom wall is provided an air hole communicating with the gap between the bottom wall and the lower cover.
The heating device according to any one of claims 1-4, wherein the heater comprises:
a fixation seat, arranged inside the cover; and

a heater body, wherein an end of the heater body is removably mounted in the fixation seat, and the other end of the heater body is inserted in the receiving chamber.
The heating device according to claim 6, wherein the heater body comprises an engaging portion, protruding outwardly, and the fixation seat comprises:
a first fixation seat, arranged with a first step face facing the receiving chamber;

a second fixation seat, removably arranged inside the first fixation seat and arranged with a second step face facing the first step face, wherein a receiving cavity is defined between the first step face and the second step face to couple with the engaging portion.
The heating device according to claim 7, wherein the portion of the heater body inserted in the receiving chamber is cylindrical, and the end of the portion has a sharp portion.
The heating device according to claim 2, further comprising a sliding cover assembly, the sliding cover assembly comprising:
a sliding cover, slidably arranged on a top of the upper cover and configured to slide to cover or expose the substrate inlet port;

a fixing member, arranged inside the upper cover and fixed with the sliding cover, wherein the top of the upper cover is provided with a sliding slot, and the sliding cover and the fixing member which are fixed with each other are slidable along the sliding slot.
The heating device according to claim 9, wherein the sliding cover assembly comprises:
a mounting sheet, disposed between the sliding cover and the top of the upper cover;

a mounting portion, arranged on the top of the receiving tube and provided with an air inlet hole, for the external air, which enters the upper cover from the air inlet port, to enter the air inlet channel.
The heating device according to claim 1, comprising:
a control device, arranged inside the cover and configured to control the start of heating device;

a light-emitting member, arranged inside the cover and electrically connected to the control device, wherein the light-emitting state of the light-emitting member corresponds to the working state of the control device.
The heating device according to claim 11, comprising:
a control member, arranged on the outer surface of the cover and electrically connected to the control device to obtain an operation of the user; and

a vibrating member, arranged inside the cover and electrically connected to the control device to feed back the control on the control device generated by the control member.
An aerosol-generating apparatus, comprising a battery tube and the heating device according to any one of claims 1-12, wherein the battery tube is configured to supply power for the heating device, enabling the heating device to atomize the aerosol-generating article into smoke.