KR20230012628A - Heating assembly and aerosol forming device - Google Patents

Abstract

In the heating assembly and the aerosol forming device, the heating assembly 10 includes a heating element 11, the heating element 11 is inserted into the aerosol-forming substrate 102 for heating, and the heating element 11 is spaced apart from each other. It includes a first extension part 111 and a second extension part 112 connected to one end of the first extension part 111, and both the first extension part 111 and the second extension part 112 are at least partially It is inserted into the aerosol-forming substrate 102 and heats the aerosol-forming substrate 102 by generating heat when energized. The heating element 11 in the heating assembly 10 can be directly inserted into the aerosol-forming substrate 102 and has excellent stability; Heating uniformity to the aerosol-forming substrate 102 is greatly improved.

Description

Heating assembly and aerosol forming device

The present invention relates to the field of heated non-combustion smoking devices, and more particularly to heating assemblies and aerosol forming devices.

As an alternative to cigarettes, electronic cigarettes are gaining more and more people's attention and love because of the advantages of safety, convenience, health and environmental protection. there is

In the conventional heated non-combustible aerosol forming apparatus, the heating method is generally tubular peripheral heating or center insertion heating; Tubular peripheral heating is where the heating tube surrounds the outside of the aerosol-forming substrate (eg cigarettes) and heats the aerosol-forming substrate, and center insertion heating is where the heating tube is inserted into the aerosol-forming substrate to heat the aerosol-forming substrate. Here, the heating assembly is widely applied due to features such as simple manufacturing and convenient use. Current heating assemblies are mainly formed by using ceramics or insulated metal as a base, printing or coating a resistive heating circuit on the base, and then fixing the resistive heating circuit to the base through high-temperature treatment.

However, since the resistance heating circuit on the conventional heating assembly is a one-layer thin film that is later printed or coated on the base, the resistance heating circuit due to the curved shape of the substrate in the process of inserting and using the heating assembly several times into the aerosol-forming substrate. When subjected to high-temperature heating, it is easy to be separated from the base and has poor stability, and during the heating process, the resistance heating circuit only contacts the aerosol-forming substrate on one side of the base where the resistance heating circuit is installed, and does not contact the aerosol-forming substrate on the back of the base. Poor heating uniformity for aerosol-forming substrates.

The present invention is easy to separate from the base when the resistance heating circuit on the conventional heating assembly undergoes high temperature heating, and the resistance heating circuit has poor heating uniformity for the aerosol-forming substrate during the heating process. Solve the problem A heating assembly and an aerosol forming device are provided.

In order to solve the above technical problem, one solution to the problem adopted by the present invention is to provide a heating assembly, the heating assembly includes a heating element, the heating element is inserted into the aerosol-forming substrate for heating, the heating element A spaced apart first extension portion and a second extension portion connected to one end of the first extension portion, wherein both the first extension portion and the second extension portion are at least partially inserted into the aerosol-forming substrate and generate heat when energized to generate an aerosol-forming substrate. heat up

In order to solve the above technical problem, another means for solving the problem adopted by the present invention provides an aerosol forming device, wherein the aerosol forming device includes a case, a heating assembly installed in the case, and a power supply assembly; The power assembly is connected to the heating assembly to supply power to the heating assembly, and the heating assembly is the aforementioned heating assembly.

In the heating assembly and aerosol-forming device provided in the present invention, the heating assembly includes a heating element inserted into and heating the aerosol-forming substrate, and the heating element is connected to a spaced apart first extension and one end of the first extension and a second extension, wherein both the first extension and the second extension are at least partially inserted into the aerosol-forming substrate and generate heat when energized to heat the aerosol-forming substrate. Compared with conventional heating elements silk-printed on a ceramic base, the heating element of the present invention can be directly and independently inserted into an aerosol-forming substrate and does not cause defects caused by separation from the ceramic base when subjected to high-temperature heating, The stability of the heating assembly is greatly improved. In addition, since the heating element is directly inserted into the aerosol-forming substrate for heating, heating uniformity of the aerosol-forming substrate is greatly improved.

1A is a structural schematic diagram of a heating assembly provided in a first embodiment of the present invention.
1B is a structural schematic diagram of a heating assembly provided in a second embodiment of the present invention.
1C is a schematic diagram in which a heating assembly provided in an embodiment of the present invention is inserted into an aerosol-forming substrate.
Figure 2 is an exploded schematic diagram of the structure shown in Figure 1b.
3A is a structural schematic diagram of a heating assembly provided in a third embodiment of the present invention.
3B is a schematic diagram in which a heating assembly provided in another embodiment of the present invention is inserted into an aerosol-forming substrate.
Figure 4 is an exploded schematic diagram of the structure shown in Figure 3a.
5 is a schematic plan view of a heating assembly provided in one specific embodiment of the present invention.
6 is a schematic plan view of a heating assembly provided in another specific embodiment of the present invention.
7 is a schematic plan view of a heating assembly provided in another specific embodiment of the present invention.
8 is a schematic size diagram of a heating plate provided in one embodiment of the present invention.
9 is a schematic size diagram of a heating rod provided in an embodiment of the present invention.
10A is a structural schematic diagram of electrodes provided in one embodiment of the present invention installed on two opposing surfaces of a heating element.
10B is a structural schematic diagram of a heating rod provided in an embodiment of the present invention.
10C is an E-direction view of a heating assembly provided in one embodiment of the present invention.
11 is a side view of a heating assembly provided in one embodiment of the present invention.
12 is a schematic view of the positions of a first heating region and a second heating region on a heating plate provided in an embodiment of the present invention.
13 is a schematic diagram showing the locations of a first heating region and a second heating region on a heating rod provided in an embodiment of the present invention.
14 is a structural schematic diagram after assembling a heating element and a mounting sheet provided in one embodiment of the present invention.
15 is a structural schematic diagram of a fixed jacket provided in one embodiment of the present invention.
16 is a structural schematic diagram of a fixed jacket provided in another embodiment of the present invention.
17 is a structural schematic diagram of a heating assembly provided in one embodiment of the present invention including a fixed jacket.
FIG. 18 is a structural schematic view of the structure shown in FIG. 17 before being assembled.
19 is a structural schematic diagram of a heating assembly provided in another embodiment of the present invention including a fixed jacket.
FIG. 20 is a structural schematic view of the structure shown in FIG. 19 before being assembled.
21 is a structural schematic diagram of a mounting sheet provided in one embodiment of the present invention.
22 is a structural schematic view after assembling a mounting sheet and a heating plate provided in one embodiment of the present invention.
23 is a structural schematic view after assembling a mounting sheet and a heating rod provided in one embodiment of the present invention.
24 is a structural schematic diagram after assembling a mounting sheet and a heating rod provided in another embodiment of the present invention.
25 is a front view after assembling a mounting sheet and a heating assembly provided in one embodiment of the present invention.
26 is a schematic structural diagram of an aerosol forming device provided in an embodiment of the present invention.

Hereinafter, the solutions to the problems of the embodiments of the present invention will be clearly and completely described with reference to the drawings of the embodiments of the present invention. Do. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

In the present invention, terms such as "first", "second", and "third" are used only for descriptive purposes and should not be understood as implicitly indicating, implying, or implicitly indicating the number of technical features shown. . Accordingly, features defined as "first", "second", and "third" may explicitly or implicitly include at least one corresponding feature. Unless otherwise clearly and specifically limited, "plurality" means at least two, for example two, three, etc. In the embodiment of the present invention, all direction signs (e.g., up, down, left, right, front, back...) analyze the relative positional relationship, motion situation, etc. of each member in a specific posture (e.g., refer to the accompanying drawings). This is to do, and when the specific posture is changed, the corresponding direction display is also changed correspondingly. Additionally, the terms “comprising” and “having” and any variations thereof are intended to include a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units and optionally further includes unlisted steps or units or optionally such a process, method, product or unit. or other steps or units inherent in the device.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described with reference to the embodiment may be included in at least one embodiment of the present invention. The appearances of such phrases 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 expressly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and embodiments.

Referring to Figs. 1A to 4, where Fig. 1A is a schematic structural diagram of a heating assembly provided in a first embodiment of the present invention; 1B is a schematic structural diagram of a heating assembly provided in a second embodiment of the present invention; 1C is a schematic diagram of a heating assembly provided in an embodiment of the present invention inserted into an aerosol-forming substrate; Fig. 2 is an exploded schematic diagram of the structure shown in Fig. 1B; 3A is a schematic structural diagram of a heating assembly provided in a third embodiment of the present invention; Fig. 3b is a schematic view of a heating assembly provided in another embodiment of the present invention being inserted into an aerosol-forming substrate; Figure 4 is an exploded schematic diagram of the structure shown in Figure 3a. In this embodiment, a heating assembly 10 is provided, and the heating assembly 10 is specifically inserted into the aerosol-forming substrate 102 for heating; For example, in one specific embodiment, the heating assembly 10 may be specifically inserted into a cigarette to heat the cigarette, and the following embodiments all take this as an example; In the above embodiments, it will be appreciated that the aerosol-forming substrate 102 may specifically be tobacco.

Specifically, the heating assembly 10 includes a heating element 11; In one specific embodiment, the heating element 11 may have a self-supporting structure, that is, the heating element 11 may exist independently without being attached to another carrier. Compared to a heating assembly formed by silk-printing or coating a conventional resistive heating element on a base, the self-supporting heating element 11 can be directly and independently inserted into the aerosol-forming substrate 102 and undergoes high-temperature heating. A problem of separation from the ceramic base or the metal base does not occur, and the stability of the heating assembly 10 is greatly improved. Since the heating element 11 is a self-supporting structure that does not require the cooperation of a substrate, the two opposing surfaces of the heating element 11 are in direct contact with the cigarette, so that not only the energy utilization rate is high, but also the heating of the cigarette is relatively uniform, and the predetermined The temperature field boundary is clear, and especially the low-voltage start-up is convenient for instant control and design of power factor.

Here, the material of the heating element 11 may be specifically conductive ceramic, and compared to a conventional metal material, the ceramic heating element 11 has high conduction efficiency and a relatively uniform temperature generated by heating. The power factor of the ceramic heating element 11 can be adjusted and designed between 3-4W, the conductivity can reach 1*10 ^-4 Ω-1*10 ^-6 Ω, the flexural strength is greater than 40MPa, and the fire resistance performance ( fire resistance) is higher than 1200 ° C; At the same time, the ceramic heating element 11 has the characteristics of the entire starting voltage range.

Specifically, the electromagnetic heating wavelength of the material of the ceramic heating element 11 is a mid-infrared wavelength, which helps to atomize tobacco tar and improve taste; In addition, the crystalline structure of the ceramic heating element 11 is an oxide ceramic that is stable at high temperatures, and the oxide ceramic has excellent fatigue resistance, excellent strength, and high density, so it can effectively prevent volatilization and dust problems of harmful heavy metals, and the heating element (11), the service life is greatly improved.

It can be understood that the heating element 11 using the ceramic whole piece can reduce the highest temperature hot spot area, eliminate the risk of fatigue cracking and fatigue resistance increase, and have better consistency; Due to the high strength of the ceramic heating material and the smoothness due to the fine crystal structure, the surface of the heating element 11 is easy to clean and does not easily stick; In addition, the ceramic heating element 11 manufactured by the ceramic production process has a relatively simple process, convenient control, low cost, and popularization of production, mainly including raw material mixing, molding and sintering, and cutting processes in the ceramic production process. and to improve economic benefits.

Specifically, the conductive ceramic heating element 11 specifically includes a main component and a crystal component; Here, the main component is to make the heating element 11 of electrically conductive and conductive ceramic form a certain resistance; The main component may specifically be one or more of manganese, strontium, lanthanum, tin, antimony, zinc, bismuth, silicon, and titanium; The crystal component, that is, the crystal component that is the main material of the ceramic material, may be specifically one or more of lanthanum manganate, strontium lanthanum manganate, tin oxide, zinc oxide, antimony oxide, bismuth oxide, silicon oxide, and yttrium oxide. In other embodiments, the heating element 11 may be made of a metal alloy, or a ceramic alloy made of an iron-silicon alloy or an iron-silicon-aluminum alloy.

Specifically, referring to FIG. 1A , in one embodiment, the heating assembly 10 specifically includes a first extension part 111 and a second extension part 112 connected to the first extension part 111. and, in a specific embodiment, both the first extension 111 and the second extension 112 are at least partially inserted into the aerosol-forming substrate 102 and generate heat when energized to heat the aerosol-forming substrate 102. do. It can be understood that the first extension 111 and the second extension 112 can be independently and directly inserted into the aerosol-forming substrate 102, and a heating element silk-printed or coated on a conventional ceramic substrate. can be inserted into the aerosol-forming substrate 102 only through a ceramic substrate, and cannot itself be directly inserted into the aerosol-forming device, and the first extension 111 and the second extension 112 provided in the present invention When subjected to high-temperature heat generation, a defect problem caused by separation from the ceramic base does not occur, and the stability of the heating assembly 10 is greatly improved.

Specifically, the two surfaces of the first extension 111 and the second extension 112 which are inserted into the aerosol-forming substrate 102 both back from each other are in contact with the aerosol-forming substrate 102 . It can be understood that since the heating element 11 of the present invention is directly inserted into the aerosol-forming substrate 102 without going through a substrate, the first extension 111 and the second extension 112 of the heating element 11 Since at least two opposing surfaces of the can both contact the aerosol-forming substrate 102, the utilization rate of heat and the heating efficiency are greatly improved.

In another embodiment, referring to FIGS. 1B and 3A , the heating assembly 10 further includes a third extension 113 for fully inserting and heating the aerosol-forming substrate 102; Specifically, in the above embodiment, the first extension 111 and the second extension 112 are spaced apart in parallel, and ends close to each other of the first extension 111 and the second extension 112 are connected through the third extension part 113; Here, ends close to each other of the first extension portion 111 and the second extension portion 112 refer specifically to the ends to be first contacted and inserted into the aerosol-forming substrate 102 . It can be understood that the first extension 111, the second extension 112 and the third extension 113 form an approximately U-shaped structure; In a specific embodiment, the first extension 111, the second extension 112, and the third extension 113 are integrally molded and sintered by conductive ceramic; Specifically, the heating element 11 having the first extension part 111, the second extension part 112, and the third extension part 113 by forming the slit 114 by cutting the heating element substrate through a laser cutting method. ) can be obtained. Understandably, the heating element 11 can also be directly sintered.

Specifically, the shapes of the first extension 111, the second extension 112, and the third extension 113 are not limited and may be designed according to actual needs. Specifically, the first extension part 111 and the second extension part 112 are long strip-shaped, and the width of the third extension part 113 is the first extension part at one end close to the first extension part 111 ( 111), it is convenient to insert the heating element 11 into the cigarette by forming a tip that gradually narrows toward one end farther away from the cigarette. In this embodiment, the first extension part 111 and the second extension part 112 have a rectangular parallelepiped shape, and the third extension part 113 has a V shape. In other embodiments, the third extension 113 may be U-shaped or isosceles trapezoidal, or the first extension 111 at one end close to the first extension 111 and the second extension 112 in width. ) and other shapes that gradually decrease in the direction away from the second extension part 112. In this embodiment, the slits 114 are rectangular with the same width or form a convex guide arc at one end close to the rectangular third extension 113; Specifically, the slit 114 has an axially symmetrical structure, its longitudinal direction is parallel to the direction of its central axis, and the first extension 111 and the second extension 112 are spaced apart, parallel, and installed in parallel. The direction is parallel to the central axis of the slit 114, and the width directions of the first extension 111, the second extension 112, and the third extension 113 are in the direction of the central axis of the slit 114. be vertical The heating element 11 has a structure symmetrical with respect to the central axis of the slit 114, that is, the first extension 111, the second extension 112, and the third extension 113 are all of the slit 114. It is a structure symmetrical about the central axis, and this structure is the temperature of the position corresponding to the width direction of the first extension part 111, the second extension part 112, and the third extension part 113 on both sides of the slit 114. is the same so that the smoke tastes better.

Referring to FIG. 5 in another embodiment, FIG. 6 is a schematic plan view of a heating assembly provided in one specific embodiment of the present invention. The first extension part 111 and the second extension part 112 are similarly installed in parallel, but the width of the slit 114 is from one end far from the third extension part 113 to close to the third extension part 113. It may be a centrally symmetrical structure that gradually becomes smaller as one end goes, and the outer sides of the corresponding first extension part 111 and the second extension part 112 are parallel, and the width is one end far from the third extension part 113. It gradually increases toward one end of the third extension part 113. As a result, the resistance of the end farthest from the third extension portion 113 slightly increases, balancing the resistance between the third extension portions 113 (the resistance of the third extension portion 113 is greater), thereby reducing the overall heat generation. This is relatively balanced.

In another embodiment, referring to FIG. 6, FIG. 6 is a schematic plan view of a heating assembly provided in another specific embodiment of the present invention. The slit 114 may have a centrally symmetrical structure gradually increasing from one end away from the third extension 113 to one end of the third extension 113, and the corresponding first extension 111 and the second extension The outer sides of the portion 112 are parallel, and the widths of the first extension portion 111 and the second extension portion 112 go from one end away from the third extension portion 113 to one end of the third extension portion 113. The resistance gradually decreases as the temperature increases, so that the resistance close to the top of the heating element 11 is greater, so that the heating element 11 meets the design requirements of a heating method in which high temperatures are relatively concentrated in the middle and top.

In another embodiment, referring to FIG. 7 , FIG. 7 is a schematic plan view of a heating assembly provided in another specific embodiment of the present invention. Although the first extension part 111 and the second extension part 112 are rectangular, they are not installed in parallel or in parallel, but are installed at a predetermined angle of 3-10 degrees, for example. In this case, the width of the slit 114 may have a centrally symmetrical structure in which the width gradually decreases from one end away from the third extension part 113 to one end of the third extension part 113 .

In one specific embodiment, referring to FIG. 8 , FIG. 8 is a schematic size diagram of a heating plate provided in one embodiment of the present invention. The heating element 11 may be in the shape of a plate shown in FIG. 8 , which may be specifically a heating plate made of conductive ceramic, and in the above embodiment, between the first extension part 111 and the second extension part 112 The interval is smaller than 1/10 of the width of the entire heating element 11, and the interval L1 between the first extension 111 and the second extension 112 may be specifically 0.25-0.35 mm, whereby the heating element ( 11) effectively guarantees the strength and at the same time avoids the short-circuit problem.

Specifically, the resistivity of the ceramic used in the heating plate may be 5*10 ^-5 Ω, the design power factor may be 2W, and the resistance may be 0.71Ω; Specifically, the heating plate may be a single series connection method (slit 114 is installed in the middle), that is, the first extension part 111, the third extension part 113, and the second extension part 112 are sequentially connected. connected in series, the plate thickness H1 may be 0.5 mm, and the overall length L2 may be 18 mm; The length L3 of the first extension 111 and the second extension 112 may be 16 mm, understandably, the single effective length of the heating element 11 may be 32.0 mm; The length of the third extension 113 of the heating element 11 may be 2 mm; Specifically, the width W1 of the heating plate may be 4.0 mm; Specifically, the error range of each size of the heating plate does not exceed 0.05 mm. Both surfaces of the plate-shaped heating element 11 facing away from each other can contact and heat the aerosol-forming substrate 102 .

Referring to FIGS. 4 and 9 as another specific embodiment, FIG. 9 is a schematic size diagram of a heating rod provided in an embodiment of the present invention. The heating element 11 may be rod-shaped, which may be specifically a heating rod made of conductive ceramic, and in the above embodiment, the distance L4 between the first extension part 111 and the second extension part 112 is the entire Less than one-third of the diameter of the heating rod φ, the distance L4 may be specifically greater than 0 and less than 1 mm, preferably L4 may be 0.3 or 0.4 mm. Specifically, in the above embodiment, a support ceramic 14 is further installed between the first extension part 111 and the second extension part 112 to increase the strength of the heating element 11 so that the heating element 11 is attached to the cigarette. During the insertion process, the heating element 11 can be more smoothly inserted into the cigarette, thereby effectively reducing the probability that the heating element 11 is bent under force. Specifically, the support ceramic 14 may improve bonding strength between the glass ceramic 15 and the first extension 111 and the second extension 112 through adhesion. In this embodiment, a ceramic material such as zirconia, zirconia-reinforced material, or alumina material may be used as the support ceramic 14 .

Specifically, the resistivity of the ceramic material used in the heating rod may be 3*10 ^-5 Ω, the design power may be 3-4W, for example, specifically 3.3W, and the resistance may be 0.3-1Ω. may be, for example, 0.5 Ω; Specifically, the heating rod may be a single series connection method, that is, the first extension 111, the third extension 113, and the second extension 112 are sequentially connected in series, and the diameter φ is specifically 2 -5 mm, specifically 3 mm, length L5 may be 18-22 mm, specifically 19.7 mm; Here, the length L6 of the first extension 111 and the second extension 112 may be 12-18 mm, specifically 16 mm, which can be understood as a single effective length of the heating element 11 may be 30-35 mm, specifically 32.0 mm; The length of the third extension part 113 may be 2-5 mm, specifically 3.7 mm; Specifically, the length L7 of the support ceramic 14 installed between the first extension part 111 and the second extension part 112 may be 12-18 mm, specifically 17 mm, and the width W2 may generate heat. It may be equal to the diameter φ of the rod, specifically 2-5 mm, specifically 3 mm, and the thickness H2 is slightly smaller than the distance between the first extension 111 and the second extension 112. Specifically, the thickness H2 may be 0.8-1.2 mm, for example, 0.9 mm, whereby the installation of the glass ceramic 15 is convenient.

In a specific embodiment, referring to FIGS. 1B to 4 , the heating assembly 10 further includes two electrodes 12, and one electrode 12 of the two electrodes 12 is a first extension part. 111, and the other electrode 12 is installed on the second extension part 112. In a specific use process, each of the two electrodes 12 is electrically connected to the power assembly through an electrode lead to electrically connect the heating element 11 and the power assembly. Specifically, referring to FIGS. 1B and 2 , the two electrodes 12 are the same side of one end far from the third extension 113 of the first extension 111 and the second extension 112, respectively. installed on The two electrodes 12 are formed by coating conductive silver paste on the outer surface of the bottom of the conductive ceramic. Specifically, the two electrodes 12 have a semicircular column shape and both ends of the cross section of the heating element 11 are slits ( 114), the contact area with the conductive ceramic is increased as much as possible to reduce the contact resistance, the area is larger for convenient welding of electrode leads, and the heating circuit formed by silk printing or coating in the prior art is very small in size Compared to, the contact resistance between the electrode 12 and the heating circuit is large, and the heating element 11 of the present invention can greatly increase the contact area with the electrode 12, thereby reducing the contact resistance, thereby reducing the heating element 11 The stability of use is better.

In one specific embodiment, referring to FIG. 10A, FIG. 10A is a structural schematic diagram of electrodes provided in one embodiment of the present invention installed on two opposite surfaces of a heating element. When the heating element 11 is a heating plate, the electrode 12 may be installed on two opposite surfaces of the first extension 111 and the second extension 112, that is, the end of the first extension 111. One electrode 12 is installed on both the first surface C and the second surface D installed at a distance from the first surface C, and the first surface C of the end of the second extension part 112 ) and the second surface (D) installed opposite to the first surface (C), another electrode (12) is installed, and when connecting two electrode leads, one of them is extended to the first Y-shaped electrode lead. Connect to the two electrodes 12 on the two surfaces on the part 111, and connect the other Y-shaped electrode lead to the electrode 12 on the second extension part 112. When the heating element 11 is a heating rod, referring to FIG. 10B, FIG. 10B is a structural schematic diagram of a heating rod provided in an embodiment of the present invention. The two electrodes 12 each extend to the inner wall surface corresponding to the slit 114; Specifically, the first extension part 111 of the heating rod has a first inner surface 111a and a first outer surface 111b, and the second extension part 112 has a second inner surface 112a and a second outer surface 111b. It has an outer surface 112b, the electrode 12 on the first extension 111 extends from the first outer surface 111b to the first inner surface 111a, and the electrode on the second extension 112 (12) extends from the second outer surface 112b to the second inner surface 112a. If the electrodes 12 are installed on the two surfaces of the heating element 11, welding is convenient and the resistance is low, so heat generated during energization is small, so damage can be effectively prevented. In addition, the two surfaces of the conductive ceramic are simultaneously energized to form the same potential, so that the electric field of the conductive component between the two surfaces is uniform, and the heating effect is better.

In this embodiment, the slit 114 penetrates the first surface C and the second surface D. Also, referring to FIG. 10C , FIG. 10C is an E-direction view of the heating assembly provided in one embodiment of the present invention. Specifically, in the heating element 11, the edges of the first extension part 111, the second extension part 112, and the third extension part 113 in the thickness direction are the first surface C and the second surface D A guide surface 118 is formed from the parallel surface in the middle toward the first surface C and the second surface D, respectively, and the guide surface 118 may specifically be a guide inclined surface (see FIG. 10C) or an arc shape. Thereby, it is not only convenient to insert into the cigarette, but also can better protect the heating element 11 by reducing resistance.

In a specific embodiment, the electrode 12 is formed at two ends of the first extension part 111 and the second extension part 112 using a coating method to increase the bonding force between the electrode 12 and the heating element 11. By improving the connection stability between the electrode lead connected on the electrode 12 and the heating element 11 can be improved. What can be understood is that the ceramic has a microporous structure, and the microporous structure of the ceramic allows the bonding force between the formed electrode 12 and the heating element 11 to be strong even in the case of a large coating thickness, so that the electrode 12 and The bonding force between the heating elements 11 is greatly improved. Specifically, silver paste may be selected as the coating material. As can be understood, the electrode 12 can also be formed through a metal deposited film method, for example depositing a metal material higher than 1*10 ^-6 Ω such as gold, platinum, or copper.

In a specific embodiment, referring to FIG. 11, FIG. 11 is a side view of a heating assembly provided in one embodiment of the present invention. A protective layer 115 may be further coated on the surface of the heating element 11, and the protective layer 115 covers the two electrodes 12 to form cigarette tar when heating the cigarette. The electrode 12 and the heating element 11 to prevent damage or contamination; Specifically, the protective layer 115 may be a glass glaze layer.

Specifically, referring to FIGS. 12 and 13 , FIG. 12 is a schematic view of locations of a first heating region and a second heating region on a heating element provided in an embodiment of the present invention; 13 is a schematic diagram showing the locations of a first heating region and a second heating region on a heating rod provided in an embodiment of the present invention. The heating element 11 includes a first heating region (A) and a second heating region (B) connected to the first heating region (A), wherein the first heating region (A) is inserted into a cigarette and heated. It is the main atomization area, and the atomization temperature thereon is concentrated at 280 ° C to 350 ° C, occupying more than 75% of the area of the atomization region. The second heating region (B) is a main mixing section of the heating element 11, and has a temperature of 150° C. or lower; In one specific embodiment, the length of the first heating region (A) of the heating rod may be 14.5 mm, and the length of the second heating region (B) may be 5.2 mm.

In a specific embodiment, among the first heating region A and the second heating region B of the first extension 111 and the second extension 112, most of the first heating region A forms an aerosol. inserted into the substrate 102 and a small portion of the first heating region (A) and the second heating region (B) remain outside the aerosol-forming substrate 102; or the first exothermic region (A) is entirely inserted into the aerosol-forming substrate 102 and the second exothermic region (B) remains outside the aerosol-forming substrate 102; Alternatively, the entire first heating region (A) is inserted into the aerosol-forming substrate 102, and a small portion of the second heating region (B) is also inserted into the aerosol-forming substrate 102, and only most of the second heating region (B) is aerosol-forming. It remains outside the forming substrate 102 .

In a specific embodiment, the two electrodes 12 are specifically installed in the second heating region (B) of the heating element 11 to reduce the atomization temperature of the ceramic heating element 11 located in the second heating region (B). In this embodiment, the ratio of the heating temperature of the first heating region (A) and the heating temperature of the second heating region (B) of the heating element 11 is greater than 2.

In one specific embodiment, the resistivity of the material of the portion located in the second heating region (B) of the heating element 11 is smaller than the resistivity of the material of the portion located in the first heating region (A) of the heating element 11. , the temperature of the first heating region (A) of the heating element 11 is greater than the temperature of the second heating region (B); At the same time, materials having different resistivities are installed in different heating regions, and the temperature of the different heating regions is adjusted and controlled by the difference in resistivity. Specifically, the main components of the ceramic material of the portion located in the first heating region (A) of the heating element 11 and the portion located in the second heating region (B) of the heating element 11 are basically the same and integrally molded, but , Since the portion located in the first heating region (A) of the heating element 11 and the portion located in the second heating region (B) of the heating element 11 have different ratios of ceramic materials or different components, the heating element The resistivity of the portion located in the first heating region (A) of (11) and the portion located in the second heating region (B) of the heating element 11 are different. Compared to the prior art, the first heating region (A) and the second heating region (B) use different conductive materials, for example, an aluminum film and a gold film are used to bond the two different conductive materials. The means can effectively avoid the problem that the conductors of the first heating region (A) and the second heating region (B) of the heating element 11 are broken.

In another specific embodiment, referring to FIG. 12 , the width and/or thickness of the first extension 111 and the second extension 112 of the heating element 11 located in the second heating region B. is larger than the width and/or thickness of the first extension part 111 and the second extension part 112 of the heating element 11 located in the first heating region A, and the first extension part 112 of the heating element 11 The temperature of the heating region (A) is higher than the temperature of the second heating region (B). In the above embodiment, the widened portion of the second heating region B of the heating element 11 is caught in the mounting sheet 20 and acts as a limit to the mounting sheet 20 through the widened portion of the heating element 11, It is prevented that relative displacement occurs between the heating element 11 and the mounting sheet 20 during insertion and withdrawal, which affects the connection stability between the electrode lead and the electrode 12.

Of course, in other embodiments, referring to FIG. 14, FIG. 14 is a structural schematic view after assembling the heating element and the mounting sheet provided in one embodiment of the present invention. Through the control of the material, the temperature of the first heating region (A) of the heating element 11 may be higher than the temperature of the second heating region (B); For example, by adding a conductive component to the lower half of the heating element 11, the resistance of the lower half is reduced and the temperature during heat generation is lowered. Therefore, in the above embodiment, the width and/or thickness of the portion located in the second heating region B of the first extension part 111 and the second extension part 112 is the first extension part 111 and the second extension part 112. It is the same as the width and / or thickness of the part located in the first heating region (A) of the extension part 112, so that processing is convenient and the problem of tobacco or tobacco tar sticking to the widened part is prevented. can do.

In a specific use process, after the heating assembly 10 is inserted into the cigarette and energized, the heating assembly 10 starts to operate to heat the cigarette and generate smoke.

In the heating assembly 10 provided in this embodiment, the heating assembly 10 includes a heating element 11, and the heating element 11 includes a first extension part 111 spaced apart from each other and a first extension part ( 111) and a second extension 112 spaced apart from each other, both of which are at least partially inserted into the aerosol-forming substrate 102 and dissipate heat when energized. generated to heat the aerosol-forming substrate 102. Compared with conventional heating elements silk-printed or coated on a base, the heating element 11 of the present invention can be directly and independently inserted into the aerosol-forming substrate 102, and is separated from the ceramic base when subjected to high-temperature heating, resulting in The defect problem does not occur, and the stability of the heating assembly 10 is greatly improved. In addition, since the heating element 11 is a self-supporting structure that does not require the cooperation of a substrate, both opposing surfaces of the heating element 11 can directly contact the aerosol-forming substrate 102, so that the heating assembly 10 can generate an aerosol Heating uniformity for the forming substrate 102 is effectively improved.

In an embodiment, refer to FIGS. 15 to 20 , wherein FIG. 15 is a schematic structural diagram of a fixed jacket provided in an embodiment of the present invention; 16 is a schematic structural diagram of a fixed jacket provided in another embodiment of the present invention; 17 is a schematic structural diagram of a heating assembly provided in an embodiment of the present invention including a fixed jacket; Fig. 18 is a structural schematic diagram of the structure shown in Fig. 17 before assembling; 19 is a schematic structural diagram of a heating assembly provided in another embodiment of the present invention including a fixed jacket; FIG. 20 is a structural schematic view of the structure shown in FIG. 19 before being assembled.

That is, the heating assembly 10 further includes a fixed jacket 13, and the fixed jacket 13 is installed to cover the outside of the heating element 11 to increase the fatigue strength of the heating element 11 and to use the heating assembly 10 increase lifespan Specifically, the material of the fixing jacket 13 may be specifically metal, for example steel; The wall thickness of the fixing jacket 13 may be 0.1-0.5 mm.

Specifically, when the heating element 11 is a heating plate, the specific structure of the fixed jacket 13 may refer to FIG. 15, and the product structure after the fixed jacket 13 and the plate heating element 11 are covered and installed is shown in FIG. Reference can be made, and the exploded schematic diagram can refer to FIG. 18. Specifically, the fixed jacket 13 may also have a plate shape, one end being open and one end closed. The closed end of the fixed jacket 13 forms a tip, the two opposite side walls of the open end have a notch 131, and the two electrodes 12 have a first extension 111 and a second extension, respectively. It can be installed on the side far from the slit 114 of the part 112, and is exposed through two notches 131, so it is convenient to connect the electrode lead 23.

When the heating element 11 is a heating rod, the specific structure of the fixed jacket 13 may refer to FIG. 16, and the product structure after the fixed jacket 13 and the rod-shaped heating element 11 are covered and installed may refer to FIG. 19 20 may be referred to for a schematic diagram of the disassembly. Specifically, the fixing jacket 13 may also be rod-shaped, with one end open and one end closed. The closed end of the fixed jacket 13 forms a tip, the two opposite side walls of the open end have a notch 131, and the two electrodes 12 have a first extension 111 and a second extension, respectively. It can be installed on the side far from the slit 114 of the part 112, and is exposed through two notches 131, so it is convenient to connect the electrode lead 23.

Specifically, referring to FIG. 20 , an insulating dielectric layer 24 is installed between the heating element 11 and the fixed jacket 13 to increase the bonding force between the fixed jacket 13 and the heating element 11 and prevent a short circuit. Specifically, the insulating dielectric layer 24 may be coated on the outer surface of the heating element 11 or the inner surface of the fixed jacket 13 depending on the process, and the coating thickness may be specifically 0.05-0.1 mm. In one specific embodiment, the insulating dielectric layer 24 is coated on the surface of the heating element 11 and exposes the slit 114 and the electrode 12 .

Specifically, the length of the fixed jacket 13 is equal to or smaller than the length of the heating element 11 . Understandably, since the fixing jacket 13 has a tip, the third extension 113 may also have no tip, which is convenient for processing. In other embodiments, the longitudinal length of the fixed jacket 13 is smaller than the length of the heating element 11, that is, the portion where the electrode 12 is located is not covered by the fixed jacket 13, so the heating element 11 The two surfaces can be directly fixed to the mounting sheet 20, and the portions inserted into the cigarettes of the first extension 111 and the second extension 112 are reinforced so that deformation or cutting does not occur.

21 to 24, where FIG. 21 is a schematic structural diagram of a mounting sheet provided in an embodiment of the present invention; 22 is a structural schematic diagram after assembling a mounting sheet and a heating plate provided in an embodiment of the present invention; 23 is a structural schematic view after assembling a mounting sheet and a heating rod provided in one embodiment of the present invention; 24 is a structural schematic view after assembling a mounting sheet and a heating rod provided in another embodiment of the present invention. That is, in a specific embodiment, the heating assembly 10 is installed on the mounting sheet 20 during use to form a heating means, and the mounting sheet 20 and the heating assembly 10 are clamped and installed, so that the mounting sheet 20 ) through which the heating assembly 10 is mounted in the body of the aerosol forming device. Specifically, when the heating element 11 is a heating plate, the product structure after the mounting sheet 20 and the heating element 11 are assembled may refer to FIG. When the fixed jacket 13 is not covered and installed, the product structure after the mounting sheet 20 and the heating element 11 are assembled may refer to FIG. 23; When the fixed jacket 13 is installed outside the heating element 11, the mounting sheet 20 may be selectively mounted on the heating element 11 or the fixed jacket 13 according to actual conditions. For example, when the length of the fixed jacket 13 is the same as the length of the heating element 11, the mounting sheet 20 may be installed over the fixed jacket 13, specifically referring to FIG. 24, When the length of the fixed jacket 13 is shorter than the length of the heating element 11, one end coated with the electrode 12 of the heating element 11 is exposed to the outside of the fixed jacket 13, and the mounting sheet 20 is the heating element ( 11) is fixed to one end exposed to the outside of the fixed jacket 13, that is, fixed to the second heating region B of the heating element 11, and the mounting sheet 20 is the mounting sheet 20 of the fixed jacket 13 ) is adjacent to one end close to . Preferably, when one end coated with the electrode 12 of the heating element 11 is exposed to the outside of the fixed jacket 13, the mounting sheet 20 is fixed to the open end of the fixed jacket 13, that is, the fixed jacket ( 13) is inserted into the mounting sheet 20, and one end coated with the electrode 12 of the heating element 11 penetrates the mounting sheet 20.

Specifically, the material of the mounting sheet 20 may be an organic or inorganic material having a melting point of 160 degrees or more, and may be, for example, a PEEK material; The mounting sheet 20 is specifically adhered to the heating assembly 10 through an adhesive, and the adhesive may be a high-temperature resistant glue.

In one embodiment, referring to FIGS. 21 and 22, the mounting sheet 20 includes a mounting body 21, a through hole 22 is installed on the mounting body 21, and the heating element 11 is specifically It is inserted into the through hole 22 and mounted with the mounting sheet 20 . In a specific embodiment, a portion corresponding to the second heating region (B) of the heating element 11 is inserted into and connected to the through hole 22; Specifically, an avoidance groove 211 is installed on the sidewall of the through hole 22, and the electrode lead 23 is specifically inserted into the mounting sheet 20 through the avoidance groove 211, and the electrode on the heating element 11 ( 12) is connected to In addition, at least two snap parts 24 are further installed on the mounting body 21, and the mounting sheet 20 is specifically fixed to the case of the aerosol forming device through the snap parts 24.

In one specific embodiment, referring to FIG. 25 , FIG. 25 is a front view after assembling a mounting sheet and a heating assembly provided in one embodiment of the present invention. When the heating assembly 10 is fixed to the mounting sheet 20 through the heating element 11 (see FIG. 25 ), the mounting sheet of the first extension part 111 and the second extension part 112 of the heating element 11 The surface of the portion inserted into (20) has a first clamping structure 116, and a position corresponding to the first clamping structure 116 in the through hole 22 of the mounting sheet 20 is a second clamping structure ( 117), the mounting sheet 20 and the heating element 11 realize fixation of the two through engaging coupling of the first clamping structure 116 and the second clamping structure 117 and improve the stability of the connection between the two. . When the fixing jacket 13 of the heating assembly 10 and the mounting sheet 20 are fixed, the first clamping structure 116 is installed on the surface of the portion of the fixing jacket 13 inserted into the mounting sheet 20, It can be combined with the second clamping structure 117 in the mounting seat 20 to realize fixation between the two. Here, the first clamping structure 116 may be specifically a plurality of protrusions (or depressions), and the second clamping structure 117 may be a depression (or protrusion) engaged with the first clamping structure 116. there is.

The heating method of the heating assembly 10 provided in this embodiment directly uses a self-supporting ceramic heating plate (or heating rod), and the heating element 11 is connected in a single series according to the requirements for the control position and resistance value of the electrode 12 can be arranged in a manner; At the same time, since the heating element 11 uses a ceramic material, compared to a heating element structure formed by coating a metal heating material on a conventional ceramic substrate, the cigarette can be heated by contacting the cigarette at the same time on both sides, so that the heating is more uniform and stable. .

Referring to FIG. 26, FIG. 26 is a structural schematic diagram of an aerosol forming device provided in an embodiment of the present invention. In this embodiment, an aerosol forming device 100 is provided, and the aerosol forming device 100 includes a case 101, a heating assembly 10 installed in the case 101, a mounting sheet 20, and a power assembly 30 ).

Here, the heating assembly 10 is installed on the mounting sheet 20, and is fixedly mounted on the inner wall surface of the case 101 through the mounting sheet 20; Specifically, the specific structures and functions of the heating assembly 10 and the mounting sheet 20 may refer to textual descriptions of related embodiments of the heating assembly 10 provided in the above embodiments, and are not repeated here. The power assembly 30 is connected to the heating assembly 10 to supply power to the heating assembly 10; In one embodiment, the power assembly 30 may specifically be a rechargeable lithium-ion battery.

The aerosol-forming device 100 provided in this embodiment heats and atomizes the cigarette after being inserted into the cigarette, through the installation of the heating assembly 10; Here, the heating assembly 10 includes a heating element 11, and the heating element 11 includes a first extension part 111 spaced apart and a second extension part 112 spaced apart from the first extension part 111. wherein both the first extension (111) and the second extension (112) are at least partially inserted into the aerosol-forming substrate (102) and are installed to heat the aerosol-forming substrate (102) by generating heat when energized. . Compared to a heating element silk-printed on a conventional ceramic base, the heating element 11 of the present invention can be directly and independently inserted into the aerosol-forming substrate 102, and is separated from the ceramic base when subjected to high-temperature heating, resulting in No defect problem occurs, and the stability of the heating assembly 10 is greatly improved. In addition, since the heating element 11 is a self-supporting structure that does not require the cooperation of a substrate, the surface of the entire heating element 11 can directly contact the aerosol-forming substrate 102, so that the heating assembly 10 is aerosol-forming substrate ( 102) is effectively improved.

The above is merely an embodiment of the present invention, and is not intended to limit the patent scope of the present invention. Equivalent structures or equivalent flow transformations using the contents of the description and drawings of the present invention, or anything directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims (20)

In the heating assembly,
A heating element is inserted into the aerosol-forming substrate for heating, the heating element includes a first extension part spaced apart from each other and a second extension part connected to one end of the first extension part, and the first extension part and wherein both of the second extensions are at least partially inserted into the aerosol-forming substrate and generate heat when energized to heat the aerosol-forming substrate.
According to claim 1,
The heating assembly of claim 1 , wherein two surfaces of the first extension portion and the second extension portion inserted into the aerosol-forming substrate and facing away from each other are both in contact with the aerosol-forming substrate.
According to claim 1,
The first extension and the second extension are spaced apart in parallel, the heating connection further includes a third extension for completely inserting into and heating the aerosol-forming substrate, and the first extension and the second extension are connected to each other. A heat generating assembly having a close end connected through the third extension part.
According to claim 3,
The heating assembly further includes two electrodes, one electrode of which is installed at one end far from the third extension of the first extension, and the other electrode is the third extension of the second extension. Heating assembly installed at one end remote from
According to claim 4,
The heating element is a heating plate made of conductive ceramic, and a distance between the first extension part and the second extension part on the heating plate is 0.25-0.35 mm.
According to claim 4,
The heating element is a heating rod made of conductive ceramic, and a distance between the first extension part and the second extension part on the heating rod is 0-1 mm.
According to claim 6,
A support ceramic is installed between the first extension and the second extension, and the support ceramic is bonded to the first extension and the second extension through glass ceramic.
According to claim 1,
The heating element includes a main component and a crystal component; The main component is at least one of manganese, strontium, lanthanum, tin, antimony, zinc, bismuth, silicon, and titanium, and the crystal component is lanthanum manganate, lanthanum strontium manganate, tin oxide, zinc oxide, antimony oxide, bismuth oxide, An exothermic assembly that is one or more of silicon oxide or yttrium oxide.
According to claim 1,
The heating assembly further comprises a fixing jacket covering the outside of the heating element.
According to claim 9,
The material of the fixed jacket is metal, and an insulating dielectric layer is installed between the fixed jacket and the heating element.
According to claim 9,
A surface of the portion inserted into the mounting sheet of the first extension and the second extension has a first clamping structure, or a surface of the portion inserted into the mounting sheet of the fixing jacket has a first clamping structure. assembly.
According to claim 4,
The heating assembly further includes a protective layer coated on a surface of the heating element to cover the two electrodes.
According to claim 12,
The heat generating assembly wherein the protective layer is a glass glaze layer.
According to claim 5,
The electrodes are installed on both the first surface of the first extension part and the second surface opposite to the first surface, and the electrodes are installed on both the first surface of the second extension part and the second surface opposite to the first surface. The heating assembly to be installed.
According to claim 6,
The first extension has a first inner surface and a first outer surface, the second extension has a second inner surface and a second outer surface, and the electrode on the first extension has the first outer surface. to the first inner surface, and the electrode on the second extension part extends from the second outer surface to the second inner surface.
According to claim 4,
The heating element includes a first heating region and a second heating region connected to the first heating region, and a ratio of a heating temperature of the first heating region and a heating temperature of the second heating region of the heating element is greater than 2, The two electrodes are installed in the second heating region of the heating element.
According to claim 16,
The width and/or thickness of the portion located in the second heating region in the first extension and the second extension is the width and/or thickness of the portion located in the first heating region in the first extension and the second extension. A heating assembly equal to the width and/or thickness.
According to claim 16,
The width and/or thickness of the portion located in the second heating region in the first extension and the second extension is the width and/or thickness of the portion located in the first heating region in the first extension and the second extension. A heating assembly that is greater than the width and/or thickness so that the temperature of the first heating region of the heating element is greater than the temperature of the second heating region of the heating element.
According to claim 16,
The heating element is integrally molded, and a part located in the second heating area in the first extension part and the second extension part and a part located in the first heating area in the first extension part and the second extension part The heating assembly uses materials having different resistivities so that the temperature of the first heating region of the heating element is greater than the temperature of the second heating region of the heating element.
In the aerosol forming device,
It includes a case, a heat generating assembly and a power supply assembly installed in the case; The power assembly is connected to the heating assembly to supply power to the heating assembly, wherein the heating assembly is the heating assembly according to claim 1.

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