Heating structure for electronic cigarette and electronic cigarette
By designing a heating layer structure with a width of the first resistance region greater than the third resistance region in the electronic cigarette heating structure, the problem of local overheating of the heating layer is solved, and more balanced heat conduction and a longer service life of the electronic cigarette are achieved.
Patent Information
- Application Number
- CN202420661349.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-03-29
AI Technical Summary
Due to the unbalanced temperature of the existing electronic cigarette heating structure, the heating layer is locally overheated and the tobacco is burnt, affecting the user experience and the life of the electronic cigarette.
A heating structure for electronic cigarettes is designed, wherein the width of the first resistance region of the heating layer is greater than the width of the third resistance region, through which local overheating is avoided and heat conduction is more balanced.
It effectively avoids local overheating of the heating layer, improves heating efficiency and heat conduction balance, extends the service life of electronic cigarettes and improves the user experience.
Smart Images
Figure CN222722426U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electronic cigarettes, and more specifically to a heating structure for electronic cigarettes and an electronic cigarette. Background Art
[0002] In recent years, as consumers' health awareness has increased, e-cigarettes are being accepted by consumers instead of cigarettes. E-cigarettes are electronic products that turn nicotine-containing e-liquid into vapor through heating and atomization.
[0003] The heating wire in the existing electronic cigarette products includes a first resistance area (i.e., a welding area for connecting to an external circuit) and a second resistance area (i.e., a tip area) located at both ends, wherein a heating area with a uniform line width is between the first resistance area and the second resistance area. Due to the characteristic of temperature transfer from high temperature to low temperature, the temperature of the first resistance area is the lowest, so the temperature of some heating areas close to the first resistance area is also low, which reduces the area of the third resistance area in the heating layer, affecting the heating efficiency. In addition, the heat conduction is uneven and easily accumulated locally. Local overheating causes the tobacco to burn, affecting the user experience and the life of the electronic cigarette. Utility Model Content
[0004] The utility model is proposed to solve the above problems. According to the first aspect of the present application, a heating structure for an electronic cigarette is provided, comprising: a carrier; an insulating layer covering the first surface of the carrier; a heating layer arranged on the insulating layer, wherein the heating layer comprises two axially symmetrical wire bodies, each of which extends along the first direction, each of which comprises a first resistance region at the first end, a second resistance region at the second end, and a third resistance region between the first resistance region and the second resistance region, along the second direction, the width of the first resistance region is greater than the width of the third resistance region, and the second direction is perpendicular to the first direction and parallel to the first surface.
[0005] Exemplarily, each of the line bodies also includes a fourth resistance region, which is arranged between the third resistance region and the first resistance region and connected to the first resistance region, wherein along the second direction, the width of the fourth resistance region is smaller than the width of the first resistance region.
[0006] Exemplarily, each of the line bodies also includes a fifth resistance region, which is arranged between the third resistance region and the fourth resistance region, and one end of the fifth resistance region is connected to the fourth resistance region, and the other end is connected to the third resistance region, wherein along the second direction, the width of the fifth resistance region is smaller than the width of the fourth resistance region.
[0007] Exemplarily, along the second direction, the width of the fifth resistance region is smaller than the width of the third resistance region.
[0008] Exemplarily, the width of the first resistance region is in the range of 2.5-5 mm, the width of the third resistance region is in the range of 1-2.0 mm, the width of the fourth resistance region is in the range of 1-2.5 mm, and the width of the fifth resistance region is in the range of 0.4-1.4 mm.
[0009] Exemplarily, the first resistance regions of the two line bodies are spaced apart by a first interval, and the third resistance regions of the two line bodies are spaced apart by a second interval, wherein the first interval is smaller than the second interval.
[0010] Exemplarily, the distance between the side edge of the heating layer and the edge of the carrier adjacent thereto is in the range of 0.2-5 mm; and / or
[0011] Along the second direction, the width of each of the wires is in the range of 0.1-5 mm.
[0012] Exemplarily, the thickness of the heating layer is in the range of 0.01-1 mm; and / or the total length of each wire body is in the range of 1-20 mm.
[0013] Exemplarily, the heating structure further includes a protective layer, wherein the protective layer covers the heating layer.
[0014] Exemplarily, the angle between the second resistance regions of the two wire bodies ranges from 80° to 100°.
[0015] Exemplarily, the second resistance regions of the two wire bodies are inclined to intersect to form an angle, and the angle is 80°-100°.
[0016] According to another aspect of the present application, an electronic cigarette is further provided, comprising: the heating structure for the electronic cigarette as described above.
[0017] Exemplarily, the electronic cigarette further includes a shell and a flange for connecting to the shell, and part of the heating structure is arranged in the flange, wherein the heating layer includes a fourth resistance area, and the fourth resistance area is located in the flange.
[0018] According to the heating structure for electronic cigarettes in the embodiment of the present application, by making the width of the first resistance area of the heating layer greater than the width of the third resistance area, the problem of local overheating of the heating layer causing the tobacco to burn can be avoided, and the area of the high-temperature area of the heating layer is increased, and the heat conduction is made more balanced to avoid excessively rapid temperature rise that reduces the service life of the electronic cigarette, thereby improving the user experience and the practicality and reliability of the electronic cigarette product. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 A side view of a heating structure for an electronic cigarette according to an embodiment of the present application is shown;
[0021] Figure 2 A schematic diagram showing a heating layer of a heating structure for an electronic cigarette according to an embodiment of the present application is shown;
[0022] Figure 3 A schematic diagram of a heating structure for an electronic cigarette according to an embodiment of the present application is shown;
[0023] Figure 4 A side view of a heating structure for an electronic cigarette according to another embodiment of the present application is shown;
[0024] Figure 5A A heating simulation diagram of the heating structure according to the present application is shown;
[0025] Figure 5B A heating simulation diagram of a conventional heating structure according to the present application is shown;
[0026] Figure 6 A schematic diagram of an electronic cigarette according to an embodiment of the present application is shown. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solution and advantages of the utility model more obvious, the exemplary embodiments according to the utility model will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments of the utility model, and it should be understood that the utility model is not limited to the exemplary embodiments described here. Based on the embodiments of the utility model described in the utility model, all other embodiments obtained by those skilled in the art without creative work should fall within the protection scope of the utility model.
[0028] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.
[0029] It should be understood that the utility model can be implemented in different forms and should not be interpreted as being limited to the embodiments proposed herein. On the contrary, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
[0030] In order to thoroughly understand the present invention, a detailed structure will be presented in the following description to illustrate the technical solution proposed by the present invention. The optional embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.
[0031] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0032] like Figure 1 and Figure 2 As shown, the heating structure 100 for an electronic cigarette according to an embodiment of the present application includes: a carrier 101; an insulating layer 102, covering a first surface of the carrier 101; a heating layer 103, arranged on the insulating layer 102, wherein the heating layer 103 is curved, and the heating layer 103 includes two axially symmetrical wire bodies, each of which extends along a first direction D1, and each of which includes a first resistance area 1031 located at a first end (i.e., a welding area for electrical connection with an external circuit), a second resistance area 1032 located at a second end (i.e., a tip area), and a third resistance area 1033 located between the first resistance area 1031 and the second resistance area 1032. Along the second direction D2, the width of the first resistance area 1031 is greater than the width of the third resistance area 1033. The second direction D2 is perpendicular to the first direction D1 and parallel to the first surface, the second resistance areas 1032 of the two wire bodies are connected, and the first resistance areas 1031 of the two wire bodies are arranged at intervals.
[0033] By making the width of the first resistance area of the heating layer greater than the width of the third resistance area, local overheating of the heating layer causing the tobacco to burn can be avoided, and heat conduction can be made more balanced to avoid excessive temperature rise that will reduce the service life of the electronic cigarette, thereby improving user experience and the practicality and reliability of electronic cigarette products.
[0034] In one example, the carrier 101 is a metal substrate, for example, a metal and / or alloy material such as copper, aluminum, etc. An insulating layer 102 is provided on the carrier 101, for example, the insulating layer 102 is a base glaze, and a heating layer 103 (i.e., a resistance heating layer) is provided on the insulating layer 102. In one example, the heating layer 103 is a series structure. In one example, a protective layer 104 is provided on the heating layer 103 to protect the heating layer 103 from oxidation.
[0035] Exemplarily, each line body further includes a fourth resistance region, which is disposed between the third resistance region and the first resistance region and connected to the first resistance region, wherein along the second direction, a width of the fourth resistance region is smaller than a width of the first resistance region. Figure 2 As shown in, in one example, each line of the heating layer 103 further includes a fourth resistance region 1034, which is disposed between the third resistance region 1033 and the first resistance region 1031 and connected to the first resistance region 1031, wherein along the second direction D2, the width of the fourth resistance region 1034 is less than the width of the first resistance region 1031. In one example, the width of the first resistance region 1031 ranges from 2.5 to 5 mm, for example, the width may be 3 mm, 3.35 mm, 3.5 mm, 4.5 mm, etc.; the width of the third resistance region 1033 ranges from 1 to 2.0 mm, for example, 1.0 mm, 1.3 mm, 1.5 mm, 1.8 mm, etc., and the width of the fourth resistance region 1034 ranges from 1 to 2.5 mm, for example, 1.25 mm, 1.55 mm, 2.0 mm, 2.5 mm, etc.
[0036] Exemplarily, each line body also includes a fifth resistance region, which is arranged between the third resistance region and the fourth resistance region, and one end of the fifth resistance region is connected to the fourth resistance region, and the other end is connected to the third resistance region, wherein, along the second direction, the width of the fifth resistance region is smaller than the width of the fourth resistance region.
[0037] like Figure 2 As shown in, in one example, each line of the heating layer 103 further includes a fifth resistance region 1035, the fifth resistance region 1035 is disposed between the third resistance region 1033 and the fourth resistance region 1034, and one end of the fifth resistance region 1035 is connected to the fourth resistance region 1034, and the other end is connected to the third resistance region 1033, wherein, along the second direction D2, the width of the fifth resistance region 1035 is less than the width of the fourth resistance region 1034. For example, the width of the fifth resistance region ranges from 0.4 to 1.4 mm, such as 0.5 mm, 0.7 mm, 0.9 mm, 1.1 mm, 1.3 mm, etc.
[0038] Exemplarily, along the second direction, the width of the fifth resistance region is smaller than the width of the third resistance region.
[0039] In one example, since the fifth resistance region 1035 is close to the fourth resistance region 1034, to ensure uniform temperature, the width of the fifth resistance region 1035 along the D2 direction is smaller than the width of the third resistance region 1033 along the D2 direction. In one example, the width of the fifth resistance region 1035 along the D2 direction is 0.9 mm, and the resistance is relatively large.
[0040] According to the second law of thermodynamics, wherever there is a temperature difference, heat is always transferred from the high-temperature part to the low-temperature part. If the heating wires are of equal width, under the same power, the area of the third resistance area will be reduced due to the heat transfer from the third resistance area to the low-temperature first resistance area. In the heating structure of the present application, a fifth resistance area is set between the low-temperature first resistance area and the high-temperature third resistance area. The fifth resistance area has the smallest width, the largest resistance, and the largest heat per unit area among all areas of the heating layer except the second resistance area. It can compensate for the significant temperature drop caused by the proximity to the low-temperature first resistance area, thereby increasing the heating area of the entire high-temperature area.
[0041] Exemplarily, the first resistance regions of the two wire bodies are spaced apart by a first interval, and the third resistance regions of the two wire bodies are spaced apart by a second interval, wherein the first interval is smaller than the second interval. By making the first interval smaller than the second interval, the width of the first resistance region can be increased as much as possible, while the width of the third resistance region can be reduced, so that the resistance of the third resistance region is increased, and its heat is increased, while the resistance of the first resistance region is reduced, and its heat is reduced, so that the first resistance region has a lower temperature.
[0042] like Figure 2 As shown, in one example, at the first resistance region 1031, the two wire bodies are spaced apart by a first interval d1, and at the third resistance region 1033, the two wire bodies are spaced apart by a second interval d2, wherein the first interval d1 is smaller than the second interval d2. In one example, since the heating temperature of the heating layer 103 at the third resistance region 1033 is relatively high, in order to evenly diffuse the heat into the surrounding environment, the distance between the two wire bodies at the third resistance region 1033 is set to be relatively large.
[0043] Exemplarily, the distance between the side edge of the heating layer and the edge of the adjacent carrier is in the range of 0.2-5 mm; and / or along the second direction, the width of each line is in the range of 0.1-5 mm.
[0044] In one example, if Figure 3 As shown in , the distance between the side of the heating layer 103 and the edge of the carrier 101 adjacent thereto ranges from 0.2 to 5 mm. In one example, the width of each line of the heating layer 103 along the second direction ranges from 0.1 to 5 mm.
[0045] For example, the thickness of the heating layer ranges from 0.01 to 1 mm, the total resistance of the heating layer can be adjusted by changing the thickness of the heating conductive layer, and its power can be adjusted by controlling the circuit board to make the atomization effect of the e-liquid more stable. In some embodiments, the total length of each wire body is in the range of 1 to 20 mm.
[0046] In one example, the length of the heating conductive layer is designed according to the power density. In a heating structure with a power of about 16 watts, the maximum temperature reaches about 400 degrees within 6 seconds. The temperature of the first resistance area is below 200 degrees, the maximum temperature of the heating area is about 400 degrees, the temperature of the heating surface is uniform, and the total length of the sum of the lengths of the individual wires in the heating layer is in the range of 1-20 mm.
[0047] Exemplarily, the heating structure further comprises a protective layer, and the protective layer covers the heating layer. Figure 4 As shown, the heating structure 100 further includes a protective layer 104, and the protective layer 104 covers the heating layer 103. In one example, the protective layer 104 is a glaze layer.
[0048] Exemplarily, the projection shape of the second resistance regions of the two wire bodies on the first surface is a triangle. Figure 2 As shown, the two wire bodies are connected at the second resistance area 1032, and the second resistance areas of the two wire bodies are inclined to intersect to form an angle (that is, the outer edges of the second resistance areas of the two wire bodies form an angle), and the angle range is 80°-100°, for example, 90°, or other suitable angles. In one example, since the second resistance area 1032 needs to be inserted into tobacco and / or tobacco oil, its shape is designed to be a sharp angle, and the width of the second resistance area 1032 along the second direction D2 gradually decreases. When heated, the temperature at the tip position is lower, which prevents the heating structure from transmitting heat to the tobacco leaves / tobacco oil too quickly, causing burning or damaging other components in the electronic cigarette, resulting in a decrease in service life.
[0049] By performing heating simulation on the heating structure of the present application, a simulation diagram (such as Figure 5A As shown in FIG. 1 ), and a conventional heating structure with uniform line width is subjected to a heating simulation under the same conditions to obtain a simulation diagram (as shown in FIG. Figure 5B As shown), the two thermal analysis simulation results are compared to find that the heating structure of the present application reaches a maximum temperature of about 400 degrees within 6 seconds at a power of 16W and a voltage of 3.54V. In addition, the temperature of the first resistance area is below 200 degrees, the maximum temperature of the heating area is about 400 degrees, and the temperature of the heating layer is uniform. The conventional heating structure also has a power of 16W and a voltage of 3.54V, and although the maximum temperature can reach 400 degrees or more within 6 seconds, it has an obvious local overheating area, and its temperature distribution is uneven, and the area of the third resistance region domain is also significantly smaller than the area of the third resistance region domain of the heating structure of the present application.
[0050] According to the heating structure for electronic cigarettes in the embodiment of the present application, by reasonably arranging the widths of various areas of the heating layer, the occurrence of local hot spots and local heat zones can be effectively prevented, greatly reducing the possibility of generating a burnt smell; heat can also be effectively conducted to prevent the heating layer or the atomization core from shortening its life due to excessively rapid temperature rise, thereby improving the user experience and the practicality and reliability of electronic cigarette products.
[0051] According to another aspect of the present application, an electronic cigarette is further provided, comprising the above-mentioned heating structure for the electronic cigarette.
[0052] Exemplarily, the electronic cigarette further comprises a housing and a flange for connecting to the housing, and part of the heating structure is arranged in the flange, wherein the heating layer comprises a fourth resistance area, and the fourth resistance area is located in the flange. Figure 6 As shown, the electronic cigarette 500 also includes a housing 501 and a flange 502 for connecting to the housing 501, wherein the heating layer 503 includes a fourth resistance area, and the fourth resistance area is located in the flange 502. During heating, in the heating layer 503, the fourth resistance area is located at both ends of the fifth resistance area and the first resistance area, the temperature difference between the fifth resistance area and the first resistance area is large, the temperature of the fifth resistance area is high, and most of the heat at the fifth resistance area is transferred to the flange 502, so that the temperature of the first resistance area is low.
[0053] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the utility model is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of protection claimed by the utility model. The protection scope of the utility model is defined by the attached claims and their equivalents.
Claims
1. A heating structure for an electronic cigarette, characterized in that: include: Carrier; an insulating layer, covering the first surface of the carrier; A heating layer is arranged on the insulating layer, wherein the heating layer includes two axially symmetrical wire bodies, each of the wire bodies extends along a first direction, each of the wire bodies includes a first resistance region located at a first end, a second resistance region located at a second end, and a third resistance region located between the first resistance region and the second resistance region, along the second direction, the width of the first resistance region is greater than the width of the third resistance region, and the second direction is perpendicular to the first direction and parallel to the first surface.
2. The heating structure according to claim 1, characterized in that: Each of the line bodies further includes a fourth resistance region, which is disposed between the third resistance region and the first resistance region and connected to the first resistance region, wherein along the second direction, a width of the fourth resistance region is smaller than a width of the first resistance region.
3. The heating structure according to claim 2, characterized in that: Each of the line bodies also includes a fifth resistance region, which is arranged between the third resistance region and the fourth resistance region, and one end of the fifth resistance region is connected to the fourth resistance region, and the other end is connected to the third resistance region, wherein along the second direction, the width of the fifth resistance region is smaller than the width of the fourth resistance region.
4. The heating structure according to claim 3, characterized in that: Along the second direction, a width of the fifth resistance region is smaller than a width of the third resistance region.
5. The heating structure according to claim 4, characterized in that: The width of the first resistance region is in the range of 2.5-5 mm, the width of the third resistance region is in the range of 1-2.0 mm, the width of the fourth resistance region is in the range of 1-2.5 mm, and the width of the fifth resistance region is in the range of 0.4-1.4 mm.
6. The heating structure according to claim 1, characterized in that: The first resistance regions of the two line bodies are spaced apart by a first interval, and the third resistance regions of the two line bodies are spaced apart by a second interval, wherein the first interval is smaller than the second interval.
7. The heating structure according to claim 1, characterized in that: The distance between the side edge of the heating layer and the edge of the carrier adjacent to the heating layer is in the range of 0.2-5 mm; and / or Along the second direction, the width of each of the wires is in the range of 0.1-5 mm.
8. The heating structure according to claim 1, characterized in that: The thickness of the heating layer is in the range of 0.01-1 mm; and / or The total length of each wire body is in the range of 1-20 mm.
9. The heating structure according to claim 1, characterized in that: The heating structure further includes a protective layer, wherein the protective layer covers the heating layer.
10. The heating structure according to claim 1, characterized in that: The second resistance areas of the two wire bodies are inclined to intersect each other to form an angle, and the angle is 80°-100°.
11. An electronic cigarette, characterized in that: include: A heating structure for an electronic cigarette according to any one of claims 1 to 10.
12. The electronic cigarette according to claim 11, characterized in that The electronic cigarette further comprises a shell and a flange for connecting to the shell, and part of the heating structure is arranged in the flange, wherein the heating layer comprises a fourth resistance area, and the fourth resistance area is located in the flange.