CN219762489U

CN219762489U - Aerosol generating device and heating structure and heating body thereof

Info

Publication number: CN219762489U
Application number: CN202223118987.6U
Authority: CN
Inventors: 马磊; 周宏明; 李日红; 杜贤武; 张国; 王煜
Original assignee: Seymour International Holdings Ltd
Current assignee: Seymour International Holdings Ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-09-29
Anticipated expiration: 2032-11-17

Abstract

The utility model relates to an aerosol generating device, a heating structure and a heating body thereof, wherein the heating structure comprises a heating body and a tube body, the heating body comprises a heating matrix and an infrared radiation layer arranged on the outer surface of the heating matrix, the heating matrix is electrified and heated and is used for exciting the infrared radiation layer to radiate infrared light waves, the heating body and at least part of the tube wall of the tube body are arranged at intervals, and the tube wall of the tube body is used for allowing the infrared light waves to penetrate and heat the aerosol to form a matrix. The heating structure has the advantages of simple structure, high atomization efficiency, strong atomization stability, long service life and remarkable taste improvement.

Description

Aerosol generating device and heating structure and heating body thereof

Technical Field

The utility model relates to the field of heating non-combustion atomization, in particular to an aerosol generating device, a heating structure thereof and a heating body.

Background

In the HNB (heating non-combustion) atomizing field, a heating system such as a central heating element heating system or a peripheral heating element heating system is generally adopted, and it is common practice that the heating element generates heat and then the heat is directly transferred to a medium such as an aerosol-forming substrate by heat conduction, and the medium is atomized at a temperature of generally 350 ℃. The heating mode has the defects that the heating body directly or indirectly conducts heat to media such as aerosol forming matrix and the like through solid materials, the working temperature of the heating body is required not to be too high, otherwise, the media are over-burned or the solid materials generate peculiar smell to influence the sucking taste of the electronic cigarette. In addition, the existing electronic cigarette needs longer preheating time before being sucked, and the preheating time of products in the current market is basically more than 15 seconds, so that the experience of consumers is greatly influenced.

Disclosure of Invention

The utility model aims to provide an improved heating structure and an aerosol generating device, and further improved heating bodies.

The technical scheme adopted for solving the technical problems is as follows: the heating body comprises a heating body and an infrared radiation layer arranged on the outer surface of the heating body, the heating body is electrified and heated and used for exciting the infrared radiation layer to radiate infrared light waves, the heating body and the pipe wall of the pipe body are arranged at least partially at intervals, the pipe wall of the pipe body is used for allowing the infrared light waves to penetrate, and the infrared light waves are used for heating the aerosol to form a matrix.

In some embodiments, the tube is infrared-transparent glass, transparent ceramic, or diamond.

In some embodiments, the maximum operating temperature of the heat-generating body is 500 ℃ to 1300 ℃.

In some embodiments, the working temperature interval of the heating element at least comprises a first working temperature interval and a second working temperature interval, the highest temperature of the first working temperature interval is 700 ℃ to 1300 ℃, and the highest temperature of the second working temperature interval is 500 ℃ to 800 ℃.

In some embodiments, the heating elements are all arranged at intervals between the heating elements and the pipe wall of the pipe body.

In some embodiments, the heater is disposed in no direct contact with the tube.

In some embodiments, the thickness of the tube wall is 0.15mm-0.6mm.

In some embodiments, the distance between the tube wall and the heating element is 0.05mm-1mm.

In some embodiments, the heating substrate is strip-shaped with a circular cross section, and the radial dimension of the heating substrate is 0.15mm-0.8mm.

In some embodiments, the heating matrix is strip-shaped with a flat cross section, and the thickness of the heating matrix is 0.15mm-0.8mm.

In some embodiments, the heat-generating substrate is in the form of a sheet, mesh or film, and the thickness of the heat-generating substrate is 10um-500um.

In some embodiments, the infrared radiation layer has a thickness of 10um to 300um.

In some embodiments, an oxidation resistant layer disposed between the heat generating substrate and the infrared radiation layer is also included.

In some embodiments, the thickness of the oxidation resistant layer is 1um to 150um.

In some embodiments, a bonding layer disposed between the oxidation resistant layer and the infrared radiation layer is also included.

In some embodiments, the bonding layer has a thickness of 10um to 70um.

In some embodiments, the infrared radiation layer includes an infrared layer and/or a composite infrared layer formed by compositing an infrared layer forming matrix with a binder for binding with the antioxidant layer.

In some embodiments, the heat-generating substrate comprises a metal substrate; the metal matrix comprises a nichrome matrix or an iron-chromium-aluminum alloy matrix.

In some embodiments, the tube body is hollow and tubular, and a first accommodating cavity for accommodating the heating element is formed inside the tube body.

In some embodiments, the heat-generating body is disposed lengthwise.

In some embodiments, the heater is columnar, strip-shaped, sheet-shaped, spiral-shaped, or mesh-shaped.

In some embodiments, the heater is at least partially folded.

In some embodiments, the heating element forms a heating portion having at least one bending section after bending; the heating part is columnar, spiral or net-shaped.

In some embodiments, the heating elements are arranged at intervals on the periphery of the tube body, and the interior of the tube body is hollow and forms a second accommodating cavity for accommodating aerosol media.

In some embodiments, the tube body comprises a first tube body for light wave transmission and a second tube body sleeved on the periphery of the first tube body;

a space is reserved between the second pipe body and the first pipe body, and a first accommodating cavity for accommodating the heating element is formed in the space;

the heating body is arranged on the periphery of the first pipe body and is arranged at intervals with the first pipe body.

The utility model also constructs an aerosol generating device which comprises the heating structure and a power supply component for supplying power to the heating structure.

The utility model also constructs a heating body, which comprises a heating matrix and an infrared radiation layer arranged on the outer surface of the heating matrix; the heating matrix is electrified and heated and used for exciting the infrared radiation layer to radiate infrared light waves to heat the aerosol forming matrix arranged in the accommodating cavity of the aerosol generating device, and the heating matrix is arranged at intervals with the cavity wall of the accommodating cavity.

In some embodiments, the heat-generating substrate is sheet-like, and the thickness of the heat-generating substrate is 0.15mm-0.8mm.

In some embodiments, the bonding layer has a thickness of 10um to 70um.

In some embodiments, the working temperature of the heating element at least comprises a first working temperature interval and a second working temperature interval, the highest temperature of the first working temperature interval is 700 ℃ to 1300 ℃, and the highest temperature of the second working temperature interval is 500 ℃ to 800 ℃.

In some embodiments, the heat-generating body is disposed lengthwise.

In some embodiments, the heater is in the form of a strip, sheet, spiral or mesh.

The aerosol generating device, the heating structure and the heating body thereof have the following beneficial effects: according to the heating structure, the infrared radiation layer is arranged on the outer surface of the heating substrate, when the heating substrate generates heat in an electrified state, the heat can excite the infrared radiation layer to radiate infrared light waves, the infrared light waves can penetrate through the pipe body to the aerosol forming substrate and heat the aerosol forming substrate, and as the heating body and the pipe body are arranged at intervals, the highest working temperature of the heating body is higher than 500 ℃ and even higher than 1000 ℃ in a short time (the working temperature of the heating body of the traditional HNB generally does not exceed 400 ℃), the overburning of the aerosol forming substrate is not caused, and the sucking taste can be greatly improved; meanwhile, the preheating time is greatly reduced, even the aerosol forming substrate is inserted for sucking, and the experience of consumers is greatly improved.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic structural view of an aerosol-generating device according to a first embodiment of the present utility model;

FIG. 2 is a schematic view of a heat generating structure of the aerosol generating device of FIG. 1;

FIG. 3 is a cross-sectional view of the heat generating structure shown in FIG. 2;

FIG. 4 is an exploded schematic view of the heat generating structure of FIG. 2;

FIG. 5 is a schematic diagram of a heat-generating body of the heat-generating structure shown in FIG. 4;

FIG. 6 is a transverse cross-sectional view of the heat-generating body shown in FIG. 5;

FIG. 7 is a graph showing a temperature change in the operation of the heat-generating body shown in FIG. 1;

fig. 8 is a transverse sectional view of a heat generating body of an aerosol-generating device in a second embodiment of the utility model;

fig. 9 is a transverse sectional view of a heat generating body of an aerosol-generating device in a third embodiment of the utility model;

fig. 10 is a schematic structural view of a heat generating structure of an aerosol generating device according to a fourth embodiment of the present utility model;

FIG. 11 is a schematic view of another angular configuration of the heat generating structure of FIG. 10;

FIG. 12 is a cross-sectional view of the heat generating structure shown in FIG. 10;

FIG. 13 is an exploded schematic view of the heat generating structure of FIG. 10;

fig. 14 is a schematic structural view of a heat generating body of an aerosol-generating device in a fifth embodiment of the utility model;

FIG. 15 is a transverse cross-sectional view of the heat-generating body shown in FIG. 14;

FIG. 16 is a transverse sectional view of a heat generating body of an aerosol-generating device in a sixth embodiment of the utility model;

fig. 17 is a schematic structural view of a heat generating body of an aerosol-generating device in a seventh embodiment of the utility model;

fig. 18 is a schematic structural view of a heat generating body of an aerosol-generating device in an eighth embodiment of the utility model;

fig. 19 is a schematic structural view of a heat generating body of an aerosol-generating device in a tenth embodiment of the utility model;

fig. 20 is a schematic structural view of a heat generating body of an aerosol-generating device in an eleventh embodiment of the utility model;

fig. 21 is a schematic structural view of a heat generating body of an aerosol-generating device in a twelfth embodiment of the utility model;

FIG. 22 is a schematic exploded view of the heat-generating body shown in FIG. 21;

fig. 23 is a schematic structural view of a heat generating body of an aerosol-generating device in a thirteenth embodiment of the utility model;

fig. 24 is a sectional view of a heat generating structure of an aerosol generating device in a fourteenth embodiment of the present utility model;

fig. 25 is a schematic exploded view of the heat generating structure of the aerosol generating device of fig. 24;

fig. 26 is a sectional view of a heat generating structure of an aerosol generating device in a fifteenth embodiment of the present utility model;

fig. 27 is a schematic exploded view of the heat generating structure of the aerosol generating device shown in fig. 26.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings.

Fig. 1 shows a first embodiment of the aerosol-generating device of the utility model. The aerosol generating device 100 can heat the aerosol forming substrate 200 by adopting a low-temperature heating non-combustion mode, and has good atomization stability and good atomization taste. In some embodiments, the aerosol-forming substrate 200 may be removably disposed on the aerosol-generating device 100, the aerosol-forming substrate 200 may be cylindrical, in particular, the aerosol-forming substrate 200 may be a strip-shaped or sheet-shaped solid material made of leaves and/or stems of plants, and aroma components may be further added to the solid material.

As shown in fig. 2 and 3, further, in the present embodiment, the aerosol-generating device 100 includes a heat-generating structure 11 and a power supply assembly 20, wherein the heat-generating structure 11 may be partially inserted into the aerosol-forming substrate 200, specifically, a portion thereof may be inserted into a medium section of the aerosol-forming substrate 200, and in an energized state, infrared light waves are generated to heat the medium section of the aerosol-forming substrate 200, so as to atomize the aerosol. The heating structure 11 has the advantages of simple structure, high atomization efficiency, strong stability and long service life. The power supply assembly 20 is used for supplying power to the heat generating structure 11. Specifically, in some embodiments, the heat generating structure 11 is removably mounted in the housing of the power supply assembly 20 and can be mechanically and/or electrically connected to a power source in the power supply assembly 20. The heating structure 11 can be detachably arranged in the shell of the power supply assembly 20, so that the heating structure 11 can be replaced conveniently.

As shown in fig. 3 and 4, in the present embodiment, the heat generating structure 11 includes a tube 111, a heat generating body 112, and a base 113. The tube 111 is covered on at least part of the heating element 112 and is capable of allowing light waves to penetrate into the aerosol-forming substrate 200, and in this embodiment, the tube 111 is capable of allowing infrared light waves to penetrate therethrough, so that the heating element 112 can radiate infrared light waves to heat the aerosol-forming substrate 200. The base 113 is disposed at the opening 1110 of the tube 111, and is used for fixing the tube 111 or sealing the opening 1110 of the tube 111.

In this embodiment, the tube 111 may be a quartz glass tube. Of course, it will be appreciated that in other embodiments, the tube 111 is not limited to a quartz tube, and may be other window materials transparent to light waves, such as infrared-transparent glass, transparent ceramics, diamond, and the like.

In this embodiment, the tube 111 is hollow and tubular, and has two ends distributed in the axial direction. Specifically, the tube 111 includes a tubular body 1111 having a circular cross section, and a peak structure 1112 provided at one end of the tubular body 1111. Of course, it will be appreciated that in other embodiments, the cross-section of the tubular body 111 is not limited to being circular. The tubular body 1111 has a hollow structure with an opening 1110 at one end. The pointed structure 1112 is disposed at an end of the tubular body 1111 away from the opening 1110, and at least a portion of the heating structure 111 is conveniently inserted into the aerosol-forming substrate 200 by disposing the pointed structure 1112. In this embodiment, a first accommodating cavity 1113 is formed inside the tube 111, and the first accommodating cavity 1113 is a cylindrical cavity. In other embodiments, the heating element 112 may be disposed at intervals on the outer periphery of the tube 111, and the inner side of the tube 111 may form a second accommodating cavity for accommodating the aerosol-forming substrate 200.

In this embodiment, the wall of the tube 111 is spaced from the entire heating element 112, for example, a gap 1114 is left between the tube 111 and the heating element 112, and the gap 1114 can be filled with air, however, it will be understood that in other embodiments, the gap 1114 can be filled with a reducing gas or an inert gas. By providing the gap 1114, direct contact between the tube 111 and the heating element 112 can be prevented. In some embodiments, the heating element 112 may be partially spaced from the wall of the tube 111, specifically, the radial dimension of a portion of the heating element 1120 may be greater than the radial dimension of another portion, the radial dimension of a portion of the heating element 1120 may be equal to the inner diameter of the tube 111, so as to perform a limiting function, and of course, it is understood that, in some embodiments, the inner side of the tube wall 111 may partially protrude toward the heating element 112 to contact the heating element 112, so as to perform a limiting function. Of course, it will be appreciated that in other embodiments, the heat generating body 112 or the pipe wall of the pipe body 111 may be provided with an isolation positioning structure, so that the heat generating body 112 and the pipe wall of the pipe body 111 may not be in direct contact, such as sleeving a ceramic ring on a part of the heat generating body 112. The above gap may be a gap into which air may enter, and does not necessarily mean that air or other gas exists, and the vacuum state is a form of a gap. In order to obtain better suction taste and prolong the service life of the heating element, the tube body 111 can also be arranged in a vacuum or open end sealing way.

The temperature at which the entire heat-generating structure 11 heats the aerosol-forming substrate 200 can be further configured by configuring the wall thickness and the distance between the heat-generating body 112 and the wall. At the same temperature, the overall irradiance may be in a decreasing trend as the thickness of the tube wall increases. Alternatively, in some embodiments, the thickness of the tube wall of the tube 111 is 0.15mm-0.6mm. In some embodiments, the temperature of the heat-generating structure 11 may gradually decrease as the distance between the heat-generating body 112 and the tube wall increases, and preferably, in some embodiments, the distance between the tube wall of the tube body 111 and the heat-generating body 12 may be 0.05mm-1mm.

As shown in fig. 5 and 6, in the present embodiment, the heating element 112 may be one heating element and may be disposed lengthwise, and has a first free end 112d and a second free end 112e. In this embodiment, the heat generating body 112 is a strip having a circular cross section. The heat generating body 112 is provided at least partially in a bent state, and integrally forms a columnar heat generating portion 1120, and specifically, it may be bent to form a spiral columnar heat generating portion 1120. It will be appreciated that in other embodiments, the heater 112 is not limited to being strip-shaped, and may be in the form of a longitudinal sheet or mesh. The heat generating portion 1120 is not limited to be columnar, and may be plate-like, mesh-like, or strip-like. In some embodiments, the heater 112 may be wound to form a single spiral, double spiral, M-shaped, N-shaped, or other shaped heater portion 1120. Of course, it is understood that in other embodiments, the heating element 112 is not limited to one, and may be two, or more than two. In other embodiments, the heating element may be a metal sheet or a metal needle.

In the present embodiment, the heat generating portion 1120 includes a first heat generating portion 112a and a second heat generating portion 112b; one end of the first heat generating portion 112a and one end of the second heat generating portion 112b are connected. In the present embodiment, the first heat generating portion 112a and the second heat generating portion 112b are integrally formed, and may be formed by bending one heat generating portion 112. It is understood that in other embodiments, the first heat generating portion 112a and the second heat generating portion 112b may be separate structures, and the first heat generating portion 112a and the second heat generating portion 112b may be two heat generating bodies 112 respectively. It will be appreciated that in other embodiments, the second heat generating portion 112b may be omitted and a conductive rod that does not generate heat may be used instead.

In the present embodiment, an electrically conductive portion 1121 is provided at one end of the heat generating portion 1120, and the electrically conductive portion 1121 is connected to the heat generating portion 1120, can be led out from one end of the tube 111, and is electrically connected to the power supply assembly 20 by being led out from the base 113. In this embodiment, the number of the conductive parts 1121 may be two, and the two conductive parts 1121 may be disposed at intervals, connected to the heat generating parts 1120, and disposed through the pipe 111 from the same end of the pipe 111. In the present embodiment, the conductive portion 1121 may be fixed to the heat generating portion 1120 by welding. Of course, it can be appreciated that, in other embodiments, the heat generating portion 1120 can be integrally formed with the conductive portion 1121, and the first free end 112d and the second free end 112e of the heat generating body 112 can respectively form two conductive portions 1121, i.e. the first free end 112d of the first heat generating portion 112a forms one of the conductive portions 1121; the second free end 112e of the second heat generating portion 112b forms another conductive portion 1121. In other embodiments, the conductive portion 1121 may be a wire that may be soldered with the heat generating portion 1120. Of course, it is understood that in other embodiments, the conductive portion 1121 is not limited to be a lead, and may be other conductive structures.

In this embodiment, the heat generating body 112 includes a heat generating base 1122 and an infrared radiation layer 1124. The heat generating body 1122 can generate heat in an energized state. The infrared radiation layer 1124 is disposed on the outer surface of the heat generating substrate 1122. The heat generating substrate 1122 can excite the infrared radiation layer 1124 to generate infrared light waves and radiate the infrared light waves in an energized and heated state. In the present embodiment, the heat generating body 1122 and the infrared radiation layer 1124 are concentrically arranged in the cross section of the heat generating portion 1120.

In this embodiment, the heat generating body 1122 may be in a strip shape as a whole, and the cross section may be circular, specifically, the heat generating body 1122 may be a heating wire. Of course, it is understood that in other embodiments, the heat generating substrate 1122 may be sheet-shaped, i.e., the heat generating substrate 1122 may be a heat generating sheet. The heat generating substrate 1122 includes a metal substrate, which may be a wire, having high temperature oxidation resistance. Specifically, the heating matrix 1122 may be a metal material with good high-temperature oxidation resistance, high stability, and difficult deformation, such as a nichrome matrix (e.g., nichrome wire) or an iron-chromium-aluminum alloy matrix (e.g., iron-chromium-aluminum alloy wire). In this embodiment, the radial dimension of the heat generating substrate 1122 may be 0.15mm to 0.8mm. The metal wire can be bent or wound into various shapes, such as spiral, net, M-shape or N-shape, and the whole body of the bent or wound heating body is in column shape, spiral section, net shape and other three-dimensional or plane shape with bending.

In the present embodiment, the heat-generating body 112 further includes an oxidation resistant layer 1123, the oxidation resistant layer 1123 being formed between the heat-generating base 1122 and the infrared radiation layer 1124. Specifically, the oxidation resistant layer 1123 may be an oxide film, and the heat generating substrate 1122 is subjected to a high temperature heat treatment to form a dense oxide film on its own surface, and the oxide film forms the oxidation resistant layer 1123. Of course, it is understood that in other embodiments, the oxidation resistant layer 1123 is not limited to include a self-formed oxide film, and in other embodiments, it may be an oxidation resistant coating applied to the outer surface of the heat-generating substrate 1122. By forming the antioxidation layer 1123, the heating substrate 1122 is prevented from being heated or rarely oxidized in the air environment, the stability of the heating substrate 1122 is improved, and further, the first accommodating cavity 1113 is not required to be vacuumized or filled with reducing gas, so that the assembly process of the whole heating structure 11 is simplified, and the manufacturing cost is saved. In this embodiment, the thickness of the oxidation resistant layer 1123 may be selected to be 1um to 150um. When the thickness of the oxidation preventing layer 1123 is less than 1um, the heat generating substrate 1122 is easily oxidized. When the thickness of the oxidation resistant layer 1123 is greater than 150um, heat conduction between the heat generating substrate 1122 and the infrared radiation layer 1124 is seriously affected.

In this embodiment, the infrared radiation layer 1124 may be an infrared layer. The infrared layer may be an infrared layer forming substrate formed on a side of the oxidation resistant layer 1123 remote from the heat generating substrate 1122 under high temperature heat treatment. In this embodiment, the infrared layer forming matrix may be a silicon carbide, spinel or composite type matrix thereof. Of course, it is to be understood that in other embodiments, the infrared radiation layer 1124 is not limited to being an infrared layer. In other embodiments, the infrared radiation layer 1124 can be a composite infrared layer. In this embodiment, the infrared layer may be formed on the side of the antioxidant layer 1123 away from the heat generating substrate 1122 by dip coating, spray coating, brush coating, or the like. The thickness of the infrared radiation layer 1124 can be 10um-300um, and when the thickness of the infrared radiation layer 1124 is 10um-300um, the infrared radiation effect is better, so that the atomization efficiency and the atomization taste of the aerosol-forming substrate 200 are better. Of course, it is understood that in other embodiments, the thickness of the infrared radiation layer 1124 is not limited to 10um-300um.

In this embodiment, unlike the heating element of the existing electronic cigarette, the highest working temperature interval of the heating element 112 may be 500-1300 ℃, i.e. the highest working temperature of the heating element 112 may be any one of 500-1300 ℃ during the whole working period, and may be specifically determined according to the temperature control requirement. The highest working temperature of the heating element in the prior art is only 400 ℃. Specifically, in the present embodiment, the operating temperature of the heating element 112 includes a first operating temperature section and a second operating temperature section; the first working temperature interval may be a working temperature interval during preheating, and the highest temperature thereof may be 700-1300 ℃, at which the aerosol-forming substrate 200 may be preheated by infrared heat in a very short time, so as to ensure the smoke amount and taste of the aerosol around the first 3 openings during user suction. Specifically, in the energized state, the heating element 112 can rapidly increase in temperature from room temperature to about 1000 ℃ within 1 to 3 seconds, and the second operating temperature interval may be an operating temperature interval in which aerosol is normally generated after the aerosol-forming substrate is preheated and is sucked by a user, and the maximum temperature may be 500 ℃ to 800 ℃. Of course, it is understood that in other embodiments, the dividing interval of the operating temperature of the heating element 112 is not limited to two, and for example, the cooling stage of the second operating temperature later stage is also included. Because of the gap 1114, the surface temperature of the tube 111 can be controlled below 350 ℃, and the atomization temperature of the whole aerosol-forming substrate is controlled between 300 and 350 ℃, so that the aerosol-forming substrate 200 is accurately atomized mainly in the 2-5um infrared band.

As shown in fig. 7, fig. 7 is a graph showing a temperature curve when the heating element 112 of the present embodiment works, wherein the ordinate is temperature, the abscissa corresponds to the number of times of taking points, about 15 points correspond to 1 second, the peak section belongs to the preheating time, and the time is about 1-5 seconds (it should be noted that, the output power can be controlled as required, so that the preheating time is far lower than the existing 15 seconds), and the preheating time in the present embodiment is preferably 2-3 seconds. As shown in fig. 7, after the aerosol generating device is started, the heating element can be heated to more than 1000 ℃ in about 2 seconds, namely, the first suction can be performed in about 1 second, the temperature is quickly raised, the medium is quickly heated, the waiting time is reduced, the condition that cigarettes can be inserted and sucked can be basically realized, and the experience of consumers is greatly improved; in addition, the temperature is raised rapidly, and the temperature is up to more than 1000 ℃, but the medium does not burn to influence the taste, but the taste is improved, and the contradiction between the scorching of aerosol generating matrixes and the improvement of the sucking taste caused by the high-temperature work of the heater is solved; in one embodiment, when the temperature reaches about 1200 ℃, the output power (which may be a voltage) is reduced, the temperature of the heating element is reduced to about 600 ℃, the temperature or a small-amplitude temperature pulse is maintained for about 5 minutes, and then the power is turned off to complete the pumping. The main heating mode and the infrared light wave are different from the infrared light wave band corresponding to the stable output temperature in the high temperature stage, but are all the wave bands which are easy to be absorbed by the medium.

The preparation method of the heating element 112 comprises the following steps: a heating substrate forming substrate is selected to form the heating substrate 1122, specifically, a wire (such as nichrome wire or iron-chromium-aluminum alloy wire) for infrared light wave is selected to form the heating substrate 1122, and the wire is wound to have a single spiral heating portion 1120. Of course, it is understood that in other embodiments, the heat generating element 112 is not limited to the heat generating portion 1120 wound in a single spiral, and the heat generating element 112 may be wound in a different manner such as a double spiral, an M-shape, an N-shape, etc.

Next, an oxidation resistant layer 1123 is provided on the outer surface of the heat generating body 1122, specifically, the wound heat generating portion 1120 is put into a heating furnace (such as a muffle furnace) to be heat treated, and then cooled to room temperature with the furnace, thereby forming an oxide film having a thickness of 1um to 150um on the outer surface of the heat generating body 1122, and further forming a heat generating body preform having the oxidation resistant layer 1123.

Then, the infrared radiation layer forming substrate is subjected to heat treatment on the side of the oxidation resistant layer 1123 far away from the heating substrate 1122, so that the infrared radiation layer 1124 is formed on the outer surface of the heating substrate 1122, specifically, the infrared layer forming substrate (such as silicon carbide or spinel) may be coated on the side of the oxidation resistant layer 1123 far away from the heating substrate 1122 by dip coating, spray coating, brush coating, or the like, and the coating thickness of the infrared layer forming substrate is controlled to be 10um to 300um, the heating body preform coated with the infrared layer forming substrate is subjected to heat treatment in a tunnel furnace, and then is put into a heating furnace (such as a muffle furnace) to be subjected to heat treatment at a temperature higher than that treated in the tunnel furnace, and then cooled to room temperature with the furnace. In another embodiment, the infrared radiation layer 1124 may be directly formed on the outer surface of the heat generating substrate 1122 without forming an oxide film in advance.

Fig. 8 shows a second embodiment of the aerosol-generating device of the utility model, which differs from the first embodiment in that the infrared radiation layer 1124 is a composite infrared layer, which may be formed by compositing an infrared layer-forming substrate with a binder for bonding with the oxidation-resistant layer 1123, in particular, the binder may be glass frit, and the composite infrared layer may be a glass frit composite infrared layer. The glass powder is adopted, so that the glass powder can be melted at high temperature, the antioxidation layer 1123 is combined with the infrared layer forming matrix, and gaps of the infrared layer forming matrix can be blocked, so that the breakdown resistance function is further improved. The glass frit composite infrared layer can be manufactured by adding glass frit to an infrared layer forming substrate (such as silicon carbide or spinel) and compounding, then coating the side of the oxidation resistant layer 1123 far away from the heating substrate 1122 by dipping, spraying, brushing, etc., heat treating, then placing into a heating furnace, heat treating at a temperature higher than that in a tunnel furnace, and then cooling to room temperature with the furnace.

Fig. 9 shows a third embodiment of the aerosol-generating device of the present utility model, which differs from the first embodiment in that the heat-generating body 112 further comprises a bonding layer 1125 disposed between the antioxidation layer 1123 and the infrared radiation layer 1124, the bonding layer 1125 being operable to prevent local breakdown of the heat-generating substrate 1122, further improving the bonding force of the antioxidation layer 1123 and the infrared radiation layer 1124. In some embodiments, the bond in the bond layer 1125 may be a glass frit, i.e., the bond layer 1125 may be a glass frit layer.

In some embodiments, a bond may also be incorporated into the infrared radiation layer 1124, and the bonding layer 1125 may be a glass frit that has a melting point greater than the melting point of the glass frit in the infrared radiation layer 1124.

Fig. 10 to 13 show a fourth embodiment of the aerosol-generating device according to the utility model, which differs from the first embodiment in that the heat generating structure 11 is not limited to being partially inserted into the aerosol-forming substrate 200 to heat the aerosol-forming substrate 200, and in this embodiment, the heat generating structure 11 may be sleeved on the outer periphery of the medium section of the aerosol-forming substrate 200 to heat the aerosol-forming substrate 200 by circumferential heating. In the present embodiment, the tube 111 includes a first tube 111a and a second tube 111b; the first tube 111a has a hollow structure with both ends penetrating. The first tube 111a may have a cylindrical shape and an inner diameter slightly larger than an outer diameter of the aerosol-forming substrate 200. The first tube 111a may have a second accommodating cavity 1115 formed inside for accommodating the aerosol-forming substrate 200 and forming a heating space for heating the medium section of the aerosol-forming substrate 200. The axial length of the first tube 111a may be greater than the axial length of the second tube 111 b. The second tube 111b may be sleeved on the outer periphery of the first tube 111a, the second tube 111b may be cylindrical, the radial dimension of the second tube 111b may be greater than the radial dimension of the first tube 111a, that is, a space is reserved between the second tube 111b and the first tube 111a, the space may form a first accommodating cavity 1113, and the first accommodating cavity 1113 is used for accommodating the heating element 112. In some embodiments, the heating element 112 is wound around the outer periphery of the first tube 111a, and a gap 1114 is formed between the whole and the inner wall of the second tube 111b and the outer wall of the first tube 111a, so that a certain temperature difference is formed between the inner wall of the first accommodating cavity 1113 and the heating element 112, and a heat insulation effect is achieved. In some embodiments, the inner wall of the second tube 111b may be provided with a reflective layer for reflecting heat of the heating body 112 and radiating to the aerosol-forming substrate 200, enhancing heating energy efficiency.

In other embodiments, the heating element 112 is not limited to be disposed entirely at a distance from the first tube 111a or the second tube 111 b. In other embodiments, the heating element 112 may be partially spaced from the first tube 111a, and the radial dimension of the partial section of the heating portion 1120 may be equal to the outer diameter of the first tube 111a, which may serve as a limiting function. In some embodiments, the heating element 112 may also be partially spaced from the second tube 111b, and the radial dimension of the partial section of the heating portion 1120 may be comparable to the radial dimension of the second tube 111 b.

Fig. 14 to 15 show a fifth embodiment of the aerosol-generating device of the present utility model, which is different from the first embodiment in that the heat generating body 112 may be sheet-shaped and may be wound to form a columnar heat generating portion 1120. The heat generating substrate 1122, the oxidation resistant layer 1123, and the infrared radiation layer 1124 may be stacked to form a "sandwich-like" structure.

Fig. 16 shows a sixth embodiment of the aerosol-generating device according to the utility model, which differs from the fifth embodiment in that a bonding layer 1125 is provided between the infrared radiation layer 1124 and the oxidation-resistant layer 1123.

Fig. 17 shows a seventh embodiment of the aerosol-generating device of the present utility model, which differs from the fifth embodiment in that the heat-generating body 112 is bendable to form a heat-generating portion 1120 in the shape of a snap spring.

Fig. 18 shows an eighth embodiment of the aerosol-generating device according to the present utility model, which differs from the fifth embodiment in that the heat generating body 112 is bendable, and the heat generating portion 1120 may be entirely sheet-shaped.

Fig. 19 shows a ninth embodiment of the aerosol-generating device of the present utility model, which differs from the first embodiment in that the first heat generating portion 112a and the second heat generating portion 112b may be of a separate structure. The first heat generating portion 112a and the second heat generating portion 112b are two independent heat generating bodies 112, respectively. Of course, it is understood that the second heat generating portion 112b may be replaced by a conductive rod that does not generate heat.

Fig. 20 shows a tenth embodiment of the aerosol-generating device according to the present utility model, which is different from the first embodiment in that the heating element 112 may be wound in a double-spiral winding manner to form a heating portion 1120 having a double-spiral structure, and the heating portion 1120 has a hollow structure, however, it will be understood that in other embodiments, a support rod may be disposed at the center of the heating portion 1120.

Fig. 21 and 22 show an eleventh embodiment of the aerosol-generating device according to the present utility model, which is different from the first embodiment in that the heat generating body 112 may be formed into a heat generating portion 1120 by an M-wire winding method. Specifically, the heating structure 11 may include two bobbins 114, the two bobbins 114 may be disposed at intervals, and the heating body 112 may be wound on the two bobbins 114. The two bobbins 114 have the same structure and radial dimensions, so that the dimension of the entire heat generating part 1120 in the radial direction of the bobbins 114 is uniformly distributed in the axial direction of the heat generating part 1120. In this embodiment, the heating structure 11 further includes a supporting rod 115, and the supporting rod 115 can be disposed between the two winding wires 114 for supporting.

Fig. 23 shows a twelfth embodiment of the aerosol generating device according to the present utility model, which is different from the second embodiment in that one of the bobbins 114 has a smaller radial dimension than the other bobbin 114, so that the entire heat generating part 1120 may be tapered, and the conductive part 1121 may pass out of the bobbin 114 having a larger radial dimension.

Fig. 24 to 25 show a thirteenth embodiment of an aerosol-generating device according to the present utility model, which differs from the fourth embodiment in that the heat-generating body 112 is formed with a double-spiral winding manner as the heat-generating portion 1120.

Fig. 26 to 27 show a fourteenth embodiment of an aerosol-generating device according to the present utility model, which differs from the fourteenth embodiment in that the heat generating body 112 is formed with a heat generating portion 1120 by an M-wire winding method.

It is to be understood that the above examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the utility model; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The utility model provides a heating structure, its characterized in that includes heat-generating body (112) and body (111), heat-generating body (112) are in including heating base member (1122) and setting infrared radiation layer (1124) of heating base member (1122) surface, heating base member (1122) circular telegram adds heat and is used for arousing infrared radiation layer (1124) radiation infrared wave, heat-generating body (112) with the pipe wall of body (111) is at least partly spaced apart to set up, the pipe wall of body (111) supplies infrared wave is sees through, infrared wave is used for heating the aerosol formation matrix.

2. The heat generating structure according to claim 1, wherein the tube body (111) is an infrared-transparent glass, a transparent ceramic or diamond.

3. The heat generating structure as recited in claim 1, wherein a maximum temperature of an operation temperature of the heat generating body (112) is 500 ℃ to 1300 ℃.

4. The heat generating structure according to claim 1, wherein the operation temperature section of the heat generating body (112) includes at least a first operation temperature section having a maximum temperature of 700 ℃ to 1300 ℃ and a second operation temperature section having a maximum temperature of 500 ℃ to 800 ℃.

5. The heat generating structure according to claim 1, wherein the heat generating body (112) is disposed at all intervals from the wall of the tube body (111).

6. The heat generating structure according to claim 1, wherein the heat generating body (112) is provided without direct contact with the tube body (111).

7. A heat generating structure as claimed in claim 1, characterized in that the thickness of the tube wall of the tube body (111) is 0.15mm-0.6mm.

8. A heating structure according to claim 1, wherein a distance between a wall of the tube body (111) and the heating element (112) is 0.05mm to 1mm.

9. The heat generating structure as recited in claim 1, wherein the heat generating substrate (1122) is a strip having a circular cross section, and the radial dimension of the heat generating substrate (1122) is 0.15mm to 0.8mm.

10. The heat generating structure as recited in claim 1, wherein the heat generating substrate (1122) is a strip shape having a flat cross section, and the thickness of the heat generating substrate (1122) is 0.15mm to 0.8mm.

11. The heat generating structure as recited in claim 1, wherein the heat generating substrate (1122) is in a form of a sheet, a net or a film, and the thickness of the heat generating substrate (1122) is 10um to 500um.

12. The heat generating structure as recited in claim 1, characterized in that the thickness of the infrared radiation layer (1124) is 10um-300um.

13. The heat generating structure of claim 1, further comprising an oxidation resistant layer (1123) disposed between the heat generating substrate (1122) and the infrared radiation layer (1124).

14. The heat generating structure as recited in claim 13, characterized in that the thickness of the antioxidation layer (1123) is 1um-150um.

15. The heat generating structure as recited in claim 13, further comprising a bonding layer (1125) disposed between the oxidation resistant layer (1123) and the infrared radiation layer (1124).

16. The heat generating structure as recited in claim 15, characterized in that the thickness of the bonding layer (1125) is 10um-70um.

17. The heat generating structure as recited in claim 13, characterized in that the infrared radiation layer (1124) includes an infrared layer and/or a composite infrared layer formed by compositing an infrared layer forming matrix with a bonding body for bonding with the antioxidant layer (1123).

18. The heat generating structure as recited in claim 1, wherein the heat generating substrate (1122) comprises a metal substrate; the metal matrix comprises a nichrome matrix or an iron-chromium-aluminum alloy matrix.

19. The heat generating structure as recited in claim 1, characterized in that the heat generating body (112) is arranged lengthwise.

20. The heating structure according to claim 1, wherein the heating body is columnar, strip-like, sheet-like, spiral or mesh-like.

21. The heat generating structure as recited in claim 1, characterized in that the heat generating body (112) is at least partially folded.

22. The heat generating structure as recited in claim 21, wherein the heat generating body (112) forms a heat generating portion (1120) having at least one bending section after bending; the heating part (1120) is columnar, spiral or net-shaped.

23. The heat generating structure according to claim 1, wherein the tube body (111) has a hollow tubular shape, and a first accommodating chamber (1113) for accommodating the heat generating body (112) is formed inside.

24. The heating structure according to claim 1, wherein the heating bodies (112) are arranged at intervals on the outer periphery of the tube body (111), and the interior of the tube body (111) is hollow and forms a second accommodating cavity (1115) for accommodating aerosol media.

25. The heat generating structure according to claim 1, wherein the tube body (111) comprises a first tube body (111 a) through which light waves pass and a second tube body (111 b) sleeved on the outer periphery of the first tube body (111 a);

a space is reserved between the second pipe body (111 b) and the first pipe body (111 a), and a first accommodating cavity (1113) for accommodating the heating element (112) is formed at the space;

the heating element (112) is arranged on the periphery of the first pipe body (111 a) and is arranged at intervals with the first pipe body (111 a).

26. An aerosol-generating device, characterized by comprising a heat generating structure (11) as claimed in any of claims 1 to 25 and a power supply assembly for supplying power to the heat generating structure (11).

27. A heat generating body characterized by comprising a heat generating body (1122) and an infrared radiation layer (1124) provided on an outer surface of the heat generating body (1122); the heating matrix (1122) is electrified and heated and is used for exciting the infrared radiation layer (1124) to radiate infrared light waves to heat the aerosol forming matrix arranged in the accommodating cavity of the aerosol generating device, and the heating matrix is used for being arranged at intervals with the cavity wall of the accommodating cavity.

28. A heat-generating body as claimed in claim 27, wherein the heat-generating base (1122) is in the form of a strip having a circular cross section, and the radial dimension of the heat-generating base (1122) is 0.15mm to 0.8mm.

29. A heat-generating body as described in claim 27, wherein said heat-generating base (1122) is sheet-shaped, and a thickness of said heat-generating base (1122) is 0.15mm to 0.8mm.

30. A heating element according to claim 27, characterized in that the thickness of the infrared radiation layer (1124) is 10-300 um.

31. A heat-generating body as recited in claim 27, further comprising an antioxidation layer (1123) provided between said heat-generating substrate (1122) and said infrared radiation layer (1124).

32. A heat-generating body as claimed in claim 31, characterized in that the thickness of the antioxidation layer (1123) is 1um to 150um.

33. A heat-generating body as recited in claim 32, further comprising a bonding layer (1125) provided between said oxidation-resistant layer (1123) and said infrared radiation layer (1124).

34. A heat-generating body as claimed in claim 33, characterized in that the thickness of the bonding layer (1125) is 10um-70um.

35. A heat-generating body as claimed in claim 33, characterized in that the infrared radiation layer (1124) includes an infrared layer and/or a composite infrared layer formed by compositing an infrared layer forming base with a binder for binding with the oxidation resistant layer (1123).

36. The heat-generating body as recited in claim 27, wherein the heat-generating substrate (1122) includes a metal substrate; the metal matrix comprises a nichrome matrix or an iron-chromium-aluminum alloy matrix.

37. A heat-generating body as claimed in claim 27, characterized in that the highest operating temperature of the heat-generating body (112) is 500 ℃ to 1300 ℃.

38. The heat-generating body as recited in claim 27, characterized in that an operation temperature of the heat-generating body (112) includes at least a first operation temperature section having a maximum temperature of 700 ℃ to 1300 ℃ and a second operation temperature section having a maximum temperature of 500 ℃ to 800 ℃.

39. The heat-generating body as recited in claim 27, characterized in that the heat-generating body (112) is disposed lengthwise.

40. A heat-generating body as described in claim 27, wherein the heat-generating body is in a shape of a bar, a sheet, a spiral or a mesh.