CN213908505U - Heating element and aerosol forming device - Google Patents

Abstract

The application provides a heating element and aerosol-forming device. The heating component comprises a heating body, a first electrode and a second electrode; the heating element is used for inserting and heating the aerosol-forming substrate and is provided with a first connecting end and a second connecting end opposite to the first connecting end; the first electrode is arranged at the first connecting end of the heating body and is electrically connected with the first connecting end; one end of the second electrode is electrically connected with the second connecting end, the other end of the second electrode extends towards the first connecting end of the heating body, and the first electrode and the second electrode are arranged in an insulating mode. The heating component can avoid the problem that the heating body falls off from the substrate to cause failure when the heating body generates heat through high temperature, and greatly improves the stability of the heating component.

Description

Heating element and aerosol forming device

Technical Field

The utility model relates to a heating incombustible equipment technical field of being fuming especially relates to a heating element and aerosol forming device.

Background

Electronic cigarettes are used as cigarette substitutes, and are more and more concerned and favored by people due to the advantages of safe, convenient, healthy, environment-friendly and the like; for example, the electronic cigarette is not heated to burn, which is also called a heating non-combustion aerosol forming apparatus.

The heating mode of the existing heating non-combustible aerosol forming device is generally tubular peripheral heating or central embedded heating; tubular peripheral heating means that a heating tube is wrapped around the outside of an aerosol-forming substrate (e.g. tobacco) to heat the aerosol-forming substrate, and central embedded heating is the insertion of a heating element into the aerosol-forming substrate to heat the aerosol-forming substrate. Wherein, the heating component is widely applied due to the characteristics of simple manufacture, convenient use and the like; the existing heating component is mainly formed by adopting ceramic or metal subjected to insulation treatment as a substrate, then printing or coating a resistance heating circuit on the substrate, and fixing the resistance heating circuit on the substrate after high-temperature treatment.

However, since the resistive heating circuit on the conventional heating element is a thin film that is post-printed or plated on the substrate, the resistive heating circuit is easily detached from the substrate and has poor stability when heated at high temperature due to bending deformation of the substrate during use of inserting the heating element into the aerosol-forming substrate many times, and the resistive heating circuit is in contact with only the aerosol-forming substrate on the side of the substrate where the resistive heating circuit is provided and is not in contact with the aerosol-forming substrate on the back of the substrate during heating, resulting in poor heating uniformity of the aerosol-forming substrate.

SUMMERY OF THE UTILITY MODEL

The application provides a heating element and aerosol forming device, this heating element can solve the resistance heating circuit on the current heating element and when high temperature generates heat, drops from the basement easily, and stability is relatively poor, and at the in-process that generates heat, the relatively poor problem of heating homogeneity of resistance heating circuit to aerosol formation matrix.

In order to solve the technical problem, the application adopts a technical scheme that: a heat generating component is provided. The heating component comprises a heating body, a first electrode and a second electrode; the heating element is used for inserting and heating the aerosol-forming substrate and is provided with a first connecting end and a second connecting end opposite to the first connecting end; the first electrode is arranged at the first connecting end of the heating body and is electrically connected with the first connecting end; one end of the second electrode is electrically connected with the second connecting end, the other end of the second electrode extends towards the first connecting end of the heating body, and the first electrode and the second electrode are arranged in an insulating mode.

In order to solve the above technical problem, another technical solution adopted by the present application is: an aerosol-forming device is provided comprising a housing and a heat generating component and a power supply component disposed within the housing; the power supply assembly is connected with the heating assembly and used for supplying power to the heating assembly, and the heating assembly is the heating assembly.

According to the heating component provided by the application, the heating body is arranged so that the aerosol-forming substrate is heated by the heating body after the aerosol-forming substrate is inserted; compared with the resistance heating circuit formed on the substrate by silk-screen printing or film coating, the heating element can be directly and independently inserted into the aerosol forming substrate, the problem of failure caused by the falling of the heating element from the substrate during high-temperature heating is avoided, and the stability of the heating component is greatly improved; meanwhile, the first electrode and the second electrode which is insulated from the first electrode are arranged, the first electrode is arranged at the first connecting end of the heating body and is electrically connected with the first connecting end, one end of the second electrode is electrically connected with the second connecting end, so that a current loop is formed between the first connecting end and the second connecting end of the heating body, the problem of short circuit can be avoided, the processing technology is simpler, and the strength of the heating assembly is effectively improved.

Drawings

Fig. 1a is a schematic structural diagram of a heat generating component according to a first embodiment of the present application;

figure 1b is a schematic illustration of a heat generating component inserted into an aerosol-forming substrate according to an embodiment of the present application;

FIG. 2 is a disassembled schematic view of the structure shown in FIG. 1a according to an embodiment of the present disclosure;

FIG. 3 is a disassembled schematic view of the structure shown in FIG. 1a according to another embodiment of the present application;

FIG. 4 is a sectional view showing heating elements provided in parallel according to an embodiment of the present application;

FIG. 5 is a sectional view showing heating elements arranged in parallel according to another embodiment of the present application;

fig. 6 is a schematic structural diagram of a heat generating component according to a second embodiment of the present application;

FIG. 7 is a disassembled schematic view of the structure shown in FIG. 6 according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural view of a heat-generating component in which a protective layer is coated on the entire surface of a heat-generating rod according to an embodiment of the present application;

figure 9 is a schematic structural view of an aerosol-forming device according to an embodiment of the present application;

fig. 10 is a front view of a mounting base and a heat generating component according to an embodiment of the present application after assembly.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. All directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The present application will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1a to fig. 2, in which, fig. 1a is a schematic structural diagram of a heating element according to a first embodiment of the present application; figure 1b is a schematic illustration of a heat generating component inserted into an aerosol-forming substrate according to an embodiment of the present application; FIG. 2 is a disassembled schematic view of the structure shown in FIG. 1a according to an embodiment of the present disclosure; in the present embodiment, a heat generating component 90 is provided, the heat generating component 90 being particularly adapted to insert and heat an aerosol-forming substrate 98, for example, in one embodiment, the heat generating component 90 being particularly adapted to insert tobacco to heat tobacco, as exemplified in the following embodiments; it will be appreciated that in this embodiment, the aerosol-forming substrate 98 may specifically be tobacco; a schematic of the insertion of the heat generating component 90 into the aerosol-forming substrate 98 may be seen in figure 1 b.

Specifically, the heater assembly 90 includes a heater 91, a first electrode 92a, and a second electrode 92 b.

Wherein the heating element 91 is used to insert and heat the aerosol-forming substrate 98; compared with the existing resistance heating circuit formed by silk-screen printing or coating on the substrate, the heating element 91 can be directly and independently inserted into the aerosol forming substrate 98, the problem of failure caused by the fact that the heating element 91 falls off from the substrate when heated at high temperature is avoided, and the stability of the heating assembly 90 is greatly improved; specifically, the heating element 91 is provided with a first connecting end E and a second connecting end F, and when the heating element 91 is inserted into tobacco, the second connecting end F of the heating element 91 is inserted into the tobacco first, so that the second connecting end F of the heating element 91 can be specifically set to be pointed, that is, to be in a triangular structure, so as to form a pointed end D; and the included angle formed by two adjacent sides of the tip can be 45 degrees to 90 degrees, such as 60 degrees. Specifically, the first electrode 92a and the second electrode 92b are specifically arranged at the first connection end E of the heating element 91, the first electrode 92a is electrically connected with the first connection end E of the heating element 91, and the second electrode 92b is arranged in an insulated manner with the first connection end E of the heating element 91 to avoid short circuit; and the second electrode 92b extends from the first connection end E to the second connection end F of the heating element 91 and is electrically connected to the second connection end F, so that a current loop is formed between the first connection end E and the second connection end F of the heating element 91. Not only processing technology is simpler like this, and has effectively improved heating element 90's bulk strength, has reduced the adhesion to the tobacco and to the adhesion of tobacco tar after the atomizing in the use simultaneously.

Specifically, the shape and size of the heating element 91 are not limited, and may be designed as needed. In one embodiment, the heating element 91 is a bar shape, such as a rectangle, and one end of the rectangle forms a tip.

Specifically, referring to fig. 1a, the heating element 91 includes a first heating area a and a second heating area B connected to the first heating area a, wherein the first heating area a is a main atomization area into which the aerosol-forming substrate 98 is inserted for heating, the atomization temperature thereon is concentrated at 280 ℃ to 350 ℃ and occupies more than 75% of the area of the atomization area, and the second heating area B is a main matching section of the heating element 91 and has a temperature below 150 ℃. Specifically, the ratio of the heating temperature of the first heating area a to the heating temperature of the second heating area B of the heating element 91 may be greater than 2; in the specific embodiment, the first electrode 92a is specifically disposed in the second heat generation region B of the heat generating body 91 to lower the atomization temperature of the ceramic heat generating body 91 located in the second heat generation region B; it can be understood that the first connection end E of the heat generating body 91 is located at the position of the second heat generating area B of the heat generating body 91, and the second connection end F is located at the position of the first heat generating area a of the heat generating body 91.

In a specific embodiment, the resistivity of the material of the part of the heating element 91 located in the second heating area B is smaller than the resistivity of the material of the part of the heating element 91 located in the first heating area a, so that the temperature of the first heating area a of the heating element 91 is higher than the temperature of the second heating area B; meanwhile, materials with different resistivities are arranged in different heating areas, so that the temperatures of the different heating areas are regulated and controlled through resistivity differences; specifically, the ceramic material of the part of the heating element 91 located in the first heating area a and the ceramic material of the part of the heating element 91 located in the second heating area B have substantially the same main component and are integrally molded, but the ceramic material of the part of the heating element 91 located in the first heating area a and the ceramic material of the part of the heating element 91 located in the second heating area B have different proportions or other components, so that the resistivity of the part of the heating element 91 located in the first heating area a is different from that of the part of the heating element 91 located in the second heating area B. Compared with the prior art, the scheme that the first heating area A and the second heating area B are made of different conductive materials, such as an aluminum film and a gold film, and the two different conductive materials are spliced can effectively avoid the problem that the conductors of the first heating area A and the second heating area B of the heating body 91 are broken.

In a particular embodiment, only a majority of the first heat-generating zone a and the second heat-generating zone B of the heat-generating body 91 are inserted into the aerosol-forming substrate 98, while a minority of the first heat-generating zone a and the second heat-generating zone B stay outside the aerosol-forming substrate 98; or the first heat generating zone a is fully inserted into the aerosol-forming substrate 98 and the second heat generating zone B remains outside the aerosol-forming substrate 98; or the first heat generating zone a is wholly inserted into the aerosol-forming substrate 98 and a small portion of the second heat generating zone B is also inserted into the aerosol-forming substrate 98, only a large portion of the second heat generating zone B remaining outside the aerosol-forming substrate 98.

The heating element 91 may be a self-supporting structure, that is, the heating element 91 may exist independently without being attached to another carrier; compared with the existing resistance heating circuit formed by silk-screen printing or coating on the substrate, the heating element 91 with the self-supporting structure can effectively avoid the problem of falling off from the substrate when heating at high temperature, and greatly improves the stability of the heating component 90; and because this heat-generating body 91 is from bearing structure, need not to cooperate the base plate, two relative surfaces of heat-generating body 91 all can with tobacco direct contact, not only energy utilization is high, and the heating to the tobacco is comparatively even, and the temperature field border of predetermineeing is clear, especially low pressure starts power instant control and design of being convenient for.

Wherein, the material of heat-generating body 91 specifically can be conductive ceramic, compares in current metal material, and this ceramic material's heat-generating body 91 conduction efficiency is higher, and the temperature that the heating produced is comparatively even: the heating element 91 made of the ceramic can be adjusted and designed at 3-4W, and the conductivity can reach 1 x 10^-4Ohm-1 x 10^-6Ohm, bending strength is more than 40MPa, and fire resistance is higher than 1200 ℃; meanwhile, the heating element 91 made of ceramics has a characteristic of full-stroke starting voltage. Specifically, the heating element 91 made of ceramics includes a main component and a crystal component; the main component can be one or more of manganese, strontium, lanthanum, tin, antimony, zinc, bismuth, silicon and titanium, and the crystal component can be one or more of lanthanum manganate, lanthanum strontium manganate, tin oxide, zinc oxide, antimony oxide, bismuth oxide, silicon oxide and yttrium oxide. In another embodiment, the heating element 91 may be made of a metal alloy or a ceramic alloy made of an iron-silicon-aluminum alloy.

Specifically, the electromagnetic heating wavelength of the material of the heating element 91 made of the ceramic is the mid-infrared wavelength, which is beneficial to atomizing the tobacco tar and improving the taste; in addition, the crystal phase structure of the ceramic heating element 91 is high-temperature stable oxide ceramic, and the oxide ceramic has good fatigue resistance, high strength and high density, so that the problems of volatilization and dust of harmful heavy metals can be effectively avoided, and the service life of the heating element 91 is greatly prolonged.

It can be understood that, the ceramic integral heating element 91 can reduce the area of the highest temperature hot spot, eliminate the risks of fatigue cracking and fatigue resistance increase, and have better consistency; and because of the high strength of the ceramic heating material and the smoothness brought by the microcrystalline structure, the surface of the heating element 91 is easy to clean and not easy to adhere; in addition, the heating element 91 made of ceramic materials is manufactured by adopting a ceramic production process, so that the process is simple and convenient to control, the cost is low, and the popularization of production and the improvement of economic benefits are facilitated. Further, the conductive ceramic may be a material having TCR characteristics, that is, the temperature and the resistance have a corresponding relationship, so that a temperature value may be obtained by detecting the resistance in the using process to control the temperature of the heating element 91.

Wherein the first electrode 92a and the second electrode 92b may be disposed on the surface of the heating element 91 in a coating manner to improve the bonding force between the first electrode 92a and the second electrode 92b and the heating element 91, thereby improving the connection stability between the electrode lead 95 connected to the first electrode 92a and the second electrode 92b and the heating element 91; it can be understood that the ceramic has a microporous structure, and the microporous structure of the ceramic enables the bonding force between the first and second electrodes 92a and 92b and the heating body 91 to be formed to be strong even if the coating thickness is large, thereby greatly improving the bonding force between the first and second electrodes 92a and 92b and the heating body 91. Specifically, the coating material may be silver paste. It is understood that the first electrode 92a and at least a portion of the second electrode 92b may also be formed by depositing a metal film, such as gold, platinum, copper, or the like, in an amount greater than 1 x 10^-6An ohmic metallic material.

In one embodiment, see fig. 2 and 3, wherein fig. 3 is a disassembled schematic view of the structure shown in fig. 1a according to another embodiment of the present application; the heating element 91 may be plate-shaped and includes a main body C and a tip D connected to one end of the main body C; wherein, the second connection end F of the heating element 91 is the tip end D, and the first connection end E of the heating element 92 is the end of the main body part C away from the tip end D; one end of the second electrode 92b remote from the second connection end F is provided at the first connection end E of the heating element 92. The main body C may be rectangular, and the tip D may be triangular, arc-shaped, or isosceles trapezoid.

Specifically, the heating element 91 may be a strip-shaped heating plate.

In a specific embodiment, referring to fig. 2, a first electrode 92a and a second electrode 92b are oppositely disposed on both sides of the heat generating plate; specifically, the first electrode 92a is coated on the first surface M of the heating plate and electrically connected to the first connection end E of the heating plate, the second surface N of the heating plate, which is opposite to the first surface M, is provided with an insulating layer 93, the insulating layer 93 extends from the first connection end E of the heating plate to a position close to the second connection end F, and the heating body 91 is exposed out of the insulating layer 93 on the second surface N of the second connection end F; the second electrode 92b is specifically provided on a surface of the insulating layer 93 remote from the heat generating plate and extends toward the second connection terminal F of the heat generating body 91, and a portion of the second electrode 92b extends outside the insulating layer 93 to be in contact with and electrically connected to the second connection terminal F of the heat generating plate. It is understood that the first electrode 92a may also be coated on the first surface M, the second surface N and the side surfaces of the heat generating plate, i.e., form a ring shape. Wherein, the portion of the first electrode 92a coated on the second surface N of the heating plate is disposed between the insulating layer 93 and the heating plate.

Specifically, the first electrode 92a may have a rectangular structure, and the insulating layer 93 may have a T-shape; specifically, the second electrode 92b includes a first coating portion 921, a second coating portion 922, and a third coating portion 923; the first coating portion 921 is coated on a side surface of the insulating layer 93 far away from the heating element 91 and is disposed opposite to the first electrode 92a, and a shape of the first coating portion 921 is the same as a shape of the first electrode 92a, the second coating portion 922 is connected to the first coating portion 921, the first coating portion 93 is coated on a side surface of the insulating layer 93 far away from the heating element 91 and is the same as an extension portion of the insulating layer 93, the third coating portion 923 is connected to the second coating portion 922, is directly coated on the second surface N of the heating element 91 and is electrically connected to the second connection end F of the heating element 91, and the third coating portion 923 is perpendicular to the second coating portion 922, and may be specifically in a rectangular structure in a long strip shape; specifically, the first, second, and third coating portions 921, 922, and 923 are formed in an i-shaped structure. It is to be understood that the insulating layer 93 and the second electrode 92b are not limited to the above-described shapes, and may be designed as needed; in a specific embodiment, the sizes of the first, second, and third coating portions 921, 922, 923 are smaller than the size of the insulating layer 93 at the respective positions.

In one embodiment, at least one surface of the heating element 91 is further coated with a protective layer 94, and the protective layer 94 covers at least the first electrode 92a and the second electrode 92b to prevent the tobacco tar formed when the tobacco is heated from damaging the first electrode 92a and the second electrode 92 b; of course, the protective layer 94 may cover the entire surface of the heat-generating body 91 (see fig. 2) so as to allow the entire heat-generating body 91 to have a smooth surface while protecting the first electrode 92a, the second electrode 92b, and the heat-generating body 91. Specifically, the protective layer 94 may be a glass glaze layer.

In another embodiment, referring to fig. 3, fig. 3 is a disassembled schematic view of the structure shown in fig. 1a according to another embodiment of the present application; unlike the first embodiment described above, the first electrode 92a and the second electrode 92b are disposed on the same side of the heat-generating body 91. Specifically, the first electrode 92a is coated on the first surface M of the heating element 91 and electrically connected to the first connection end E of the heating plate; specifically, the surface of the first electrode 92a away from the heat generating plate is provided with an insulating layer 93, the insulating layer 93 covers the first electrode 92a and extends from the first connection end E of the heat generating plate to a position close to the second connection end F, the second electrode 92b is specifically provided on the surface of the insulating layer 93 away from the first electrode 92a and extends toward the second connection end F of the heat generating body 91, and a portion of the second electrode 92b extends outside the insulating layer 93 to be in contact with and electrically connected to the second connection end F of the heat generating plate.

Specifically, the first electrode 92a may have a rectangular structure, and the insulating layer 93 may have a T-shape, and specifically, a portion of the insulating layer 93 covering the first electrode 92a has the same shape as the first electrode 92a, and is slightly larger than the first electrode 92a or has the same size as the first electrode 92 a. It is to be understood that the shape and size of the portion of the insulating layer 93 covering the first electrode 92a are not limited as long as the first electrode 92a can be insulated from the second electrode 92b, for example, the insulating layer 93 covers the entire first electrode 92a, or the insulating layer 93 covers a portion of the first electrode 92a but the size of the insulating layer 93 is larger than that of the second electrode 92 b.

In a specific embodiment, a first electrode 92a may be further disposed at a position where the second surface N of the heating element 91 is opposite to the first electrode 92a, and a second electrode 92b may be further disposed at a position where the second surface N of the heating element 91 is opposite to the second electrode 92b through an insulating layer 93, that is, the number of the first electrode 92a and the second electrode 92b is two, so that the conductive component of the conductive ceramic close to both surfaces of the conductive ceramic may have a shorter current path, and the temperature fields of both surfaces of the heating element 91 are more uniform.

In the heating unit 90 provided in the present embodiment, the heating element 91 is provided to heat the aerosol-forming substrate 98 by the heating element 91 after the aerosol-forming substrate 98 is inserted; compared with the existing resistance heating circuit of silk-screen printing or film coating on the substrate, the heating element 91 can be directly and independently inserted into the aerosol formation substrate 98, the problem of failure caused by the fact that the heating element 91 falls off from the substrate when the heating element is heated at high temperature is avoided, and the stability of the heating component 90 is greatly improved; meanwhile, the heating element 91 is arranged in a plate shape, so that the contact area between the aerosol forming substrate 98 and the heating element 91 is effectively increased, and the energy utilization rate and the heating efficiency are improved; in addition, the first electrode 92a and the second electrode 92b insulated from the first electrode 92a are provided, the first electrode 92a is provided at the first connection end E of the heating element 91 and electrically connected to the first connection end E, and one end of the second electrode 92b is electrically connected to the second connection end F, so that a current loop is formed between the first connection end E and the second connection end F of the heating element 91, which not only can avoid the short circuit problem, but also has a simpler processing process and a higher strength of the heating element 90.

Of course, in other embodiments, refer to fig. 4 and 5, wherein fig. 4 is a cross-sectional view of the parallel arrangement of the heating units provided in one embodiment of the present application; FIG. 5 is a sectional view showing heating elements arranged in parallel according to another embodiment of the present application; the heating member 90 includes at least two heating elements 91, and the at least two heating elements 90 are arranged in parallel. In one embodiment, the number of the heating elements 91 may be two, and the two heating elements 91 are disposed opposite to each other with an insulating layer 93 disposed therebetween.

In a specific embodiment, referring to fig. 4, the first electrodes 92a are disposed on the opposite side surfaces of the two heating elements 91, and the first electrodes 92a are disposed at the first connection ends E of the two heating elements 91; in this embodiment, the second electrode 92b is provided on the insulating layer 93, extends from the first connection end E of the heating element 91 to a position close to the second connection end F, and is electrically connected to the second connection ends F of the two heating elements 91, respectively, so that the two heating elements 91 form a current loop between the first electrode 92a and the second electrode 92b and are arranged in parallel.

In another embodiment, referring to fig. 5, the first electrode 92a is disposed at a position of the insulating layer 93 corresponding to the first connection ends E of the heat-generating bodies 91 and electrically connected to the first connection ends E of the two heat-generating bodies 91; in this embodiment, the second connection terminals F of the two heating elements 91 are respectively connected to the corresponding second electrodes 92b, so that the two heating elements 91 are arranged in parallel through the first electrodes 92a and the corresponding second electrodes 92 b; specifically, the opposite side surfaces of the two heating elements 91 are coated with the insulating layer 93, and the second electrode 92b on each heating element 91 is disposed on the side surface of the insulating layer 93 away from the heating element 91 and extends from the first connection end E of the heating element 91 to a position close to the second connection end F to be connected with the second connection end F of the heating element 91.

In another embodiment, referring to fig. 6, fig. 6 is a schematic structural diagram of a heat generating component according to a second embodiment of the present application; different from the first embodiment, the heating element 91 may be a columnar body and includes a main body C and a tip D connected to one end of the main body C, the second connection end F of the heating element 91 is the tip D, and the first connection end E of the heating element 91 is the end of the main body C away from the tip D; in one embodiment, the main body portion C may be cylindrical, and the tip portion D may be conical or frustoconical; specifically, the heating element 91 may be a heating rod as shown in fig. 6, and the second connecting end F of the heating rod is a tip end for being inserted into tobacco conveniently.

Specifically, referring to fig. 7, fig. 7 is a disassembled schematic view of the structure shown in fig. 6 according to an embodiment of the present disclosure; the first electrode 92a is disposed on at least a part of the surface of the first connection end E of the heat generating rod; an insulating layer 93 is arranged on the outer side wall of the main body part C of the heating rod, the insulating layer 93 extends from the first connecting end E of the heating rod to a position close to the second connecting end F, and the position of the main body part C close to the tip end D is exposed out of the insulating layer 93, the second electrode 92b is arranged on the surface of the insulating layer 93 far away from the heating rod, and part of the second electrode 92b extends out of the insulating layer 93 and is arranged in contact with the second connecting end F of the heating rod, namely, part of the second electrode 92b extends out of the insulating layer 93 and is arranged in contact with the second connecting end F of the main body part C of the heating body 91 close to the tip end D and is exposed out of the insulating layer 93.

Further, in one embodiment, the first electrode 92a is disposed around the outer sidewall of the heating rod, which may be an arc-shaped structure; in this embodiment, the insulating layer 93 is wound by one turn around the circumferential direction of the heating rod, and a gap is formed between the insulating layer 93 and the position of the heating rod corresponding to the position where the first electrode 92a is disposed, so that the first electrode 92a is at least partially exposed through the gap, thereby facilitating connection of the electrode lead 95; in an embodiment, the portion of the second electrode 92b extending out of the insulating layer 93 may be disposed around the main body C of the heat generating rod, which may be in a ring structure, so as to maintain the effective connection between the second electrode 92b and the second connection end F of the heat generating rod. Of course, in other embodiments, the first electrode 92a may further include a bottom surface extending to the heat generating rod near the first connection end E to increase the overall bonding force and electrical reliability.

In another embodiment, the first electrode 92a may also be disposed around the outer sidewall of the heating rod and have a ring structure, and the insulating layer 93 may specifically cover the first electrode 92a completely and be disposed around the outer sidewall of the heating rod for one turn, which is not limited in this embodiment as long as the insulating layer 93 can prevent the first electrode 92a and the second electrode 92b from being shorted.

In one embodiment, at least one surface of the heat generating rod is further coated with a protective layer 94, and the protective layer 94 covers at least the first electrode 92a and the second electrode 92b to prevent the first electrode 92a and the second electrode 92b from being damaged by smoke generated when the tobacco is heated; of course, in other embodiments, referring to fig. 8, fig. 8 is a schematic structural diagram of a heat generating component in which a protective layer is provided to coat the entire surface of a heat generating rod according to an embodiment of the present application. The protective layer 94 may also cover the entire surface of the heat generating rod, thereby allowing the entire heat generating rod to have a smooth surface while protecting the first electrode 92a, the second electrode 92b, and the heat generating rod. Specifically, the protective layer 94 may be a glass glaze layer.

In one embodiment, the resistance of the heating rod may be 0.3-1 ohm, such as 0.6 ohm, and the resistivity may be 1 x 10^-4Ohm-4 x 10^-4Ohm, specifically 2 x 10^-4Ohm, the power used may be 2 watts to 5 watts, and may specifically be 3.5W. Specifically, referring to FIG. 8, the total length L41 of the heating rod can be 18-20 mm, the length L42 for inserting into tobacco can be 14-15 mm, and the diameter of the heating rod

In particular, it may be 2.0 to 3.0 mm, for example 3 mm.

It should be noted that, in the specific processing process, the heating rod is coated with the silver electrode to form an electrode, then the other positions on the surface of the heating rod are coated with the insulating medium layer, and then the electrode lead 95 is welded to prevent the electrode lead 95 from contacting the heating rod.

Specifically, the heating element 91 is arranged to be columnar, so that the heating element 91 is conveniently inserted into tobacco, the columnar heating element 91 is easy to process, and the processing difficulty coefficient is effectively reduced.

The heating component 90 provided by the embodiment of the application can directly adopt a self-supporting heating plate (or heating rod) made of conductive ceramic materials, and the heating body 91 can be arranged into a single or multiple series connection type or multiple parallel connection type according to the electrode arrangement position and resistance value requirements; meanwhile, the heating body 91 is made of ceramic materials, compared with the existing resistance heating circuit formed by coating metal heating materials on the substrate, the resistance heating circuit can contact tobacco on two sides and heat the tobacco, and heating is more uniform and stable.

Referring to fig. 9, fig. 9 is a schematic structural diagram of an aerosol-forming device according to an embodiment of the present disclosure; in the present embodiment, an aerosol-forming device 900 is provided, the aerosol-forming device 900 including a housing 901, and a heat generating component 90, a mount 96, and a power supply component 97 provided in the housing 901.

The heating element 90 may be the heating element 90 provided in any of the above embodiments, and the specific structure and function thereof may be described in the above related text, which is not described herein again; specifically, the heating element 90 is disposed on the mounting seat 96, and is fixedly mounted on the inner wall surface of the casing 901 through the mounting seat 96; the power supply unit 97 is connected to the heating unit 90, and supplies power to the heating unit 90; and in one embodiment, the power supply assembly 97 may be embodied as a rechargeable lithium ion battery.

Specifically, the specific structure of the heat generating component 90 mounted on the mounting seat 96 can be seen in fig. 1a and 8; specifically, referring to fig. 8, the mount 96 includes a mount body 961 and a mount hole 962, and the heat generating component 90 is specifically inserted into the mount hole 962 of the mount 96 to be fixed with the mount 96; specifically, the second heat generating region B of the heat generating component 90 is inserted into the mounting hole 962 of the mounting seat 96 to be fixed with the mounting seat 96; and the bottom end of the aerosol-forming substrate 98 abuts the upper surface of the mounting seat 96 after insertion of the aerosol-forming substrate 98. Specifically, an avoiding groove is provided on a side wall of the mounting hole 962, and the electrode lead 95 specifically extends into the mounting seat 96 through the avoiding groove to be connected to the electrode on the heating element 91. Further, the mounting body 961 is further provided with at least two clamping portions 963, and the mounting base 96 is fixed to the housing 901 of the aerosol-forming device 900 through the clamping portions 963.

Specifically, referring to fig. 9, fig. 9 is a front view of the mounting base and the heat generating component provided in an embodiment of the present application after being assembled; the heating element 91 is engaged in the mounting hole 962 of the mounting base 96; in a specific embodiment, a portion of the surface of the heat-generating body 91 for being inserted into the mounting base 96 has a first fixing structure 964, a second fixing structure 965 is disposed in a position corresponding to the first fixing structure 964 in the mounting hole 962 of the mounting base 96, and the mounting base 96 and the heat-generating body 91 are fixed by the first fixing structure 964 and the second fixing structure 965, so as to improve the connection stability of the two. The first fastening structure 964 may be a plurality of protrusions (or recesses), and the second fastening structure 965 may be a recess (or protrusion) matching the first fastening structure 964.

Further, referring to fig. 1a, one side of the mounting body 961 may be further provided with an extension groove 966 communicating with the mounting hole 962, the extension groove 966 may be particularly provided at a side surface facing away from the second connection end F of the heating body 91, and the extension groove 966 conforms to the shape of a portion of the heating element 90 for insertion into the mounting seat 96, so as to reinforce the portion of the heating element 90 inserted into the mounting seat 96 by the extension groove 966 against breakage. In one embodiment, two extension slots 966 are disposed on the mounting base 96, and the two extension slots 966 are disposed perpendicularly and crosswise.

Specifically, the material of the mounting seat 96 may be organic or inorganic material with a melting point higher than 160 degrees, for example, PEEK material; the mounting seat 96 may be fixed to the heat generating component 90 by an adhesive, which may be high temperature glue.

In the aerosol-forming device 900 according to the present embodiment, by providing the heat generating component 90, the heat generating component 90 is provided to include the heat generating body 91 so as to heat the aerosol-forming substrate 98 by the heat generating body 91 after the aerosol-forming substrate 98 is inserted; compared with the existing resistance heating circuit of silk-screen printing or film coating on the substrate, the heating element 91 can be directly and independently inserted into the aerosol formation substrate 98, the problem that the heating element 98 falls off from the substrate to cause failure when heated at high temperature is avoided, and the stability of the heating component 90 is greatly improved; meanwhile, the first electrode 92a and the second electrode 92b insulated from the first electrode 92a are arranged, the first electrode 92a is arranged at the first connection end E of the heating element 91 and electrically connected with the first connection end E, and one end of the second electrode 92b is electrically connected with the second connection end F, so that a current loop is formed between the first connection end E and the second connection end F of the heating element 91, the short circuit problem can be avoided, the process is simple, and the strength of the heating assembly 90 is high.

The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.

Claims (16)

1. A heat generating component, comprising:

a heating element for inserting and heating an aerosol-forming substrate, the heating element having a first connection end and a second connection end opposite to the first connection end;

the first electrode is arranged at the first connecting end of the heating body and is electrically connected with the first connecting end;

and one end of the second electrode is electrically connected with the second connecting end, the other end of the second electrode extends towards the first connecting end of the heating body, and the first electrode and the second electrode are arranged in an insulating manner.

2. The heating element as claimed in claim 1, wherein the heating element is plate-shaped and includes a main body portion and a tip portion connected to one end of the main body portion, the second connection end of the heating element is the tip portion, and the first connection end of the heating element is an end of the main body portion away from the tip portion; one end of the second electrode, which is far away from the second connecting end, is arranged at the first connecting end of the heating body.

3. The heat generating component as claimed in claim 2, wherein the first electrode is provided on the first surface of the heat generating body;

the second surface of the heating element is provided with an insulating layer, the insulating layer extends from the first connecting end of the heating element to a position close to the second connecting end, the heating element is exposed out of the insulating layer on the second surface of the second connecting end, the second electrode is arranged on the surface of the insulating layer far away from the heating element, and part of the second electrode extends out of the insulating layer and is arranged in contact with the second connecting end of the heating element; wherein the first surface is disposed opposite the second surface.

4. The heat generating component as claimed in claim 2, wherein the first electrode is provided on the first surface of the heat generating body;

the surface of the first electrode, which is far away from the heating element, is provided with an insulating layer, the insulating layer extends from the first connecting end of the heating element to a position close to the second connecting end, the second electrode is arranged on the surface of the insulating layer, which is far away from the first electrode, and part of the second electrode extends out of the insulating layer and is in contact with the second connecting end of the heating element.

5. The heating element as claimed in claim 3 or 4, wherein the first electrode has a rectangular structure, the second electrode has an I-shaped structure, and the insulating layer has a T-shape.

6. The heating element as claimed in claim 2, wherein the main body portion is rectangular and the tip portion is triangular, arc-shaped or isosceles trapezoid.

7. The heating element as claimed in claim 1, wherein the heating element has a columnar shape and includes a main body portion and a tip portion connected to one end of the main body portion, the second connection end of the heating element is the tip portion, and the first connection end of the heating element is an end of the main body portion away from the tip portion.

8. The heat generating component as claimed in claim 7, wherein the first electrode is provided on at least a part of a surface of the first connection end of the heat generating body;

the outer side wall of the main body part of the heating body is provided with an insulating layer, the insulating layer extends from the first connecting end of the heating body to a position close to the second connecting end and enables the position of the main body part close to the tip part to be exposed out of the insulating layer, the second electrode is arranged on the surface of the insulating layer far away from the heating body, and part of the second electrode extends out of the insulating layer and is arranged in contact with the second connecting end of the main body part of the heating body close to the tip part and exposed out of the insulating layer.

9. The heat generating component as claimed in claim 8, wherein the insulating layer is disposed around an outer sidewall of the heat generating body and has a notch at a position corresponding to the first electrode so that the first electrode is at least partially exposed.

10. The heating element as claimed in claim 8, wherein the first electrode is provided around the heating body, and a portion of the second electrode extending to the outside of the insulating layer is provided around the main body portion of the heating body.

11. The heat generating component of claim 1, further comprising a protective layer coated on the surface of the heat generating body and covering the first electrode and the second electrode.

12. The heat generating component as claimed in claim 11, wherein the protective layer is a glass glaze layer and covers the entire surface of the heat generating body.

13. The heating assembly of claim 7 wherein the body portion is cylindrical and the tip portion is conical or frustoconical.

14. The heat generating assembly according to claim 1, wherein the heat generating body includes a first heat generating region and a second heat generating region, and a ratio of a heat generating temperature of the first heat generating region to a heat generating temperature of the second heat generating region is greater than two.

15. The heating element as claimed in claim 1, wherein the heating element is made of conductive ceramic.

16. An aerosol-forming device, comprising: the heating module and the power supply module are arranged in the shell; wherein the power supply component is connected with the heating component for supplying power to the heating component, and the heating component is the heating component as claimed in any one of claims 1 to 15.

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