Atomizing core and atomizer

Abstract

The utility model provides an atomizing core and an atomizer, the atomizing core comprises a base body and a heating body, the base body is provided with an atomizing surface, the heating body is arranged on the atomizing surface and comprises a heating area, the heating area comprises a first heating section, a second heating section and a third heating section which are sequentially connected in series, and the second heating section comprises at least two heating subsections which are connected in parallel; the plurality of heating subsections are arranged side by side in the first direction, and in the first direction, the second heating section is located between the first heating section and the third heating section; therefore, the distribution of the high-temperature heating section of the atomizing core can be optimized, so that the temperature distribution of the atomizing core is more uniform, the separation of the base body and the heating body caused by larger temperature difference is avoided, and the atomizing efficiency is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of atomization devices, and particularly relates to an atomization core and an atomizer. Background Art

[0002] As the core component of atomization technology, the main function of the atomization core is to convert liquid into tiny mist particles through heating or other means.

[0003] The atomization core mainly includes a substrate and a heating element, and uses the heating element to generate heat to achieve atomization. However, in related technologies, most of the heating elements are designed with a single-line trajectory. When working, a voltage is applied across both ends of the single-line heating element, and heat is generated using Joule's law. Since the heat dissipation in the middle area of the circuit is slow, the temperature distribution of the heating trajectory is usually high in the middle area and low at both ends of the heating trajectory, forming a large temperature gradient, which poses a great challenge to the bonding of the thick film in the middle area of the heating circuit and the substrate, and restricts the atomization life of the entire atomization core. Utility Model Content

[0004] In view of this, the present application is committed to providing an atomization core to improve the uniformity of temperature distribution and the atomization efficiency. In addition, the present application also provides an atomizer including the above atomization core.

[0005] To achieve the above object, the present application provides the following technical solutions:

[0006] An atomization core, comprising:

[0007] A substrate having an atomization surface;

[0008] A heating element disposed on the atomization surface, including a heating area, and the heating area includes a first heating section, a second heating section, and a third heating section connected in series in sequence;

[0009] Wherein, the second heating section includes at least two parallel heating sub-sections, and the plurality of heating sub-sections are arranged side by side in a first direction, and in the first direction, the second heating section is located between the first heating section and the third heating section.

[0010] Preferably, the first heating section, the second heating section, and the third heating section are connected in series in sequence in the first direction and extend in a second direction intersecting the first direction.

[0011] Preferably, both the first heating section and the third heating section extend in the first direction and the second direction and define an enclosed area, and the second heating section is located within the enclosed area defined by the first heating section and the third heating section.

[0012] Preferably, both the first heating section and the third heating section include a first straight section extending in the first direction, a second straight section extending in the second direction, and a curved section connecting the first straight section and the second straight section.

[0013] Preferably, the heating element has a centrosymmetric structure, and the second heating section is located in the central region of the heating element.

[0014] Preferably, the resistance per unit length of the first heating section is R1, the resistance per unit length of the second heating section is R2, and the resistance per unit length of the third heating section is R3;

[0015] wherein, R2 ≥ R3, and R2 ≥ R1.

[0016] Preferably, the width of the heating segment is less than the width of the first heating section, and the width of the heating segment is less than the width of the third heating section.

[0017] Preferably, the sum of the widths of all the heating segments is less than or equal to the width of the first heating section, and the sum of the widths of all the heating segments is less than or equal to the width of the third heating section.

[0018] Preferably, the heating element further includes electrode contact areas, and both ends of the heating area are connected to the electrode contact areas.

[0019] Preferably, the distance between adjacent heating sections and between adjacent heating segments is greater than the width of any one of the first heating section, the heating segment, and the third heating section; and / or,

[0020] The distance between adjacent heating sections and between adjacent heating segments is consistent.

[0021] Preferably, the atomization surface includes:

[0022] A first region, which is the region of the heating area for installing the heating element;

[0023] A second region, surrounding the first region;

[0024] wherein, in the direction parallel to the atomization surface, the size ratio of the first region to the atomization surface is less than or equal to 0.7.

[0025] An atomizer, the atomizer includes a liquid storage part and the above-mentioned atomization core, wherein,

[0026] The liquid storage part is provided with a liquid storage cavity and an air flow channel, and the liquid storage cavity has a liquid outlet;

[0027] At least a part of the atomizing core is disposed at the liquid outlet and is in liquid communication with the liquid storage cavity, and the atomizing surface of the atomizing core faces away from the liquid outlet and is exposed in the air flow channel.

[0028] It can be seen from the above technical solution that after the atomizing core provided in this application is powered on, the first heating section, the second heating section, and the third heating section generate heat by using Joule's law. Since the second heating section is located between the first heating section and the third heating section, the heat generated by the segmented heating is not easily dissipated. Therefore, it can quickly generate high temperature, thereby improving the atomizing efficiency. Further, a plurality of heating segments are connected in parallel, optimizing the distribution of the high-temperature heating section of the atomizing core, making the temperature distribution of the atomizing core more uniform, avoiding the separation of the substrate and the heating element due to a large temperature difference, and further improving the atomizing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure shows a schematic structural diagram of an atomizing core provided in an embodiment of the present application;

[0030] Figure 2 The figure shows a schematic structural diagram of another atomizing core provided in an embodiment of the present application;

[0031] Figure 3 Shown as Figure 2 a top view of the atomizing core shown in;

[0032] Figure 4 The figure shows a cross-sectional view of an atomizer provided in an embodiment of the present application.

[0033] In Figures 1-4 :

[0034] 1 - Substrate, 11 - Atomizing surface, 12 - Protrusion, 111 - First region, 112 - Second region;

[0035] 2 - Heating element, 21 - Heating area, 22 - Electrode contact area, 211 - First heating section, 212 - Second heating section, 213 - Third heating section, 2121 - Heating segment;

[0036] 3 - Liquid storage part, 31 - Liquid storage cavity, 32 - Air flow channel, 311 - Liquid outlet;

[0037] 4 - Power supply part, 41 - Battery;

[0038] 5 - Mouthpiece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] First of all, it should be noted that the atomizer core in the present application is suitable for scenarios where liquid is converted into tiny mist particles by heating, for example: in the field of electronic cigarettes, the e-liquid is atomized to form smoke by heating, and for example: in the medical field, some medical atomizers heat the drug to evaporate it and produce tiny drug particles.

[0041] The atomizer core in the present application includes a substrate 1 and a heating element 2, wherein the substrate 1 has an atomization surface 11, the heating element 2 is arranged on the atomization surface 11, and the heating element 2 includes a heating area 21 (i.e., an area in the heating element 2 that generates heat), and the heating area 21 includes a first heating segment 211, a second heating segment 212, and a third heating segment 213 that are sequentially connected in series; when the atomizer core is in use, two ends of the heating element 2 are respectively connected to the positive electrode and the negative electrode of the power supply, so that current flows through the first heating segment 211, the second heating segment 212, and the third heating segment 213, thereby generating heat using Joule's law.

[0042] like Figures 2-4 As shown, the second heating section 212 includes at least two parallel heating segments 2121; the plurality of heating segments 2121 are arranged along a first direction (the first direction is as shown in FIG. Figure 1 ) are arranged side by side, and in the first direction, the plurality of heating segments 2121 are located between the first heating segment 211 and the third heating segment 213. In other words, in the first direction, the second heating segment 212 is sandwiched between the first heating segment 211 and the third heating segment 213, and the adjacent heating segments in the first direction are arranged at intervals to avoid short circuits; for example, as Figure 2 and Figure 3 As shown, the extension direction of part of the first heating segment 211 and the extension direction of part of the third heating segment 213 are consistent with the extension direction of the heating segment 2121, and both extend along the second direction. In the first direction, there is a spacing between adjacent heating segments (i.e., between the first heating segment 211 and the second heating segment 212 and between the second heating segment 212 and the third heating segment 213, the same below) and between adjacent heating segments 2121, and the first direction and the second direction intersect. It should be pointed out here that the angle between the above-mentioned first direction and the second direction is not specifically limited in this application, for example, it can be 90°, 60° or 45°.

[0043] After the above atomization core is powered on, the first heating section 211, the second heating section 212, and the third heating section 213 generate heat by using Joule's law. Since the second heating section 212 is located between the first heating section 211 and the third heating section 213, the heat generated by the heating sub-section 2121 is not easily dissipated. Therefore, it can quickly generate high temperature, thereby improving the atomization efficiency. Further, multiple heating sub-sections 2121 are arranged in parallel, optimizing the distribution of the high-temperature heating section of the atomization core, making the temperature distribution of the atomization core more uniform, avoiding the separation of the substrate 1 and the heating element 2 due to a large temperature difference, and further improving the atomization efficiency.

[0044] It should be noted that the number of the set heating sub-sections 2121 can be two, three or more, and specific adaptive design can be carried out according to needs. The present application does not make specific limitations in this regard. Further preferably, the shape and size of all the heating sub-sections 2121 are exactly the same. In this way, it is more beneficial to the uniformity of temperature distribution.

[0045] In addition, as Figure 1 shown, the first heating section 211, the second heating section 212, and the third heating section 213 are connected in series in the first direction and extend in a second direction intersecting the first direction. In an exemplary embodiment, both the first heating section 211 and the third heating section 213 are linear, and the serially connected first heating section 211, second heating section 212, and third heating section 213 are distributed in a snake shape, so that in the first direction, the second heating section 212 is located between the first heating section 211 and the third heating section 213.

[0046] Further, as Figure 2 shown, both the first heating section 211 and the third heating section 213 extend in the first direction and the second direction and define an enclosed area, and the second heating section 212 is located within the enclosed area defined by the first heating section 211 and the third heating section 213. Exemplarily:

[0047] In a specific embodiment, both the first heating section 211 and the third heating section 213 are L-shaped, and the second heating section 212 is located within the area enclosed by the first heating section 211 and the third heating section 213, so that in the first direction, the second heating section 212 is located between the first heating section 211 and the third heating section 213. In addition, in this setting mode, the heat dissipation speed of the heat generated by the second heating section 212 is lower, so the atomization efficiency can be further improved. It should be understood that the above is only an example of the shape of the first heating section 211 and the third heating section 213 in the present application by taking the first heating section 211 and the third heating section 213 as linear or L-shaped, but the present application is not limited thereto. For example, the first heating section 211 and the third heating section 213 can also be J-shaped, or special shapes formed by multiple straight line segments and curve segments, etc.

[0048] In another specific embodiment, both the first heating section 211 and the third heating section 213 include a first straight section extending along the first direction, a second straight section extending along the second direction, and a curved section connecting the first straight section and the second straight section. In this way, it is possible to avoid excessive current accumulation at the inflection points of the first heating section 211 and the third heating section 213, resulting in local high temperatures at the inflection points of the first heating section 211 and the third heating section 213, and further avoiding the separation of the heating element 2 from the substrate 1 caused thereby; at the same time, the above arrangement can also improve the uniformity of heat distribution and improve the atomization efficiency.

[0049] In addition, it should be noted that the shape of the substrate 1 can be adaptively designed according to needs. For example, it can be set as a rectangle as shown in Figure 2 or a structure with a protrusion 12 as shown in Figure 3 shown.

[0050] In some preferred embodiments, the heating element 2 has a centrosymmetric structure, and the second heating section 212 is located in the central region of the heating element 2; thus, after the heating element 2 is powered on, the temperature in the central region of the heating element 2 is the highest, and the temperature gradually decreases along the direction away from the central region of the heating element 2. This setting method is more conducive to optimizing the temperature distribution of the atomization surface 11, and thus is conducive to improving the atomization effect.

[0051] Of course, when it is not necessary to consider the influence of the first heating section 211 and the third heating section 213 on the temperature distribution of the heating element 2, the heating element 2 can also be set as a non-centrosymmetric structure. For example, the first heating section 211 and the third heating section 213 of the heating element 2 can be set to different shapes or sizes. More specifically, the first heating section 211 can be set as an L shape, while the third heating section 213 is a straight shape; or, the shape of the first heating section 211 is the same as that of the third heating section 213, while the size of the first heating section 211 is larger than that of the third heating section 213.

[0052] Furthermore, the resistance per unit length of the first heating section 211 is R1, the resistance per unit length of the second heating section 212 is R2, and the resistance per unit length of the third heating section 213 is R3; wherein, R2≥R3 and R2≥R1. As described above, the heating element 2 in the present application generates heat using Joule's law, that is, the greater the resistance value of the resistance per unit length of the heating section, the higher the efficiency of generating heat. Thus, setting R2≥R3 and R2≥R1 is beneficial to improving the atomization efficiency on the one hand; on the other hand, it is beneficial to optimizing the temperature distribution and thus improving the atomization effect.

[0053] In some embodiments, the width of the heat - generating segment 2121 is less than the width of the first heat - generating segment 211 and less than the width of the third heat - generating segment 213. By reducing the width of the heat - generating segment 2121, the resistance of the heat - generating segment 2121 is increased to avoid affecting the atomization efficiency due to the relatively low resistance value of the heat - generating segment 2121. Further preferably, the sum of the widths of the multiple heat - generating segments 2121 is less than or equal to the width of the first heat - generating segment 211 and less than or equal to the width of the third heat - generating segment 213. In this way, R2≥R3 and R2≥R1 are achieved. Exemplarily:

[0054] In some embodiments, the second heat - generating segment 212 includes 2 parallel - connected heat - generating segments 2121. The width of any one of the heat - generating segments 2121 is less than 1 / 2 of the width of the first heat - generating segment 211 and less than 1 / 2 of the width of the third heat - generating segment 213.

[0055] In some other embodiments, the second heat - generating segment 212 includes 3 parallel - connected heat - generating segments 2121. The width of any one of the heat - generating segments 2121 is less than 1 / 3 of the width of the first heat - generating segment 211 and less than 1 / 3 of the width of the third heat - generating segment 213.

[0056] It should be noted that: the width of the first heat - generating segment 211 refers to the dimension of the side parallel to the atomization surface 11 in the cross - section of the first heat - generating segment 211 perpendicular to the current - flowing direction, such as Figure 4 L2 in. Similarly, the width of the heat - generating segment 2121 refers to the dimension of the side parallel to the atomization surface 11 in the cross - section of the corresponding heat - generating segment 2121 perpendicular to the current - flowing direction; the width of the third heat - generating segment 213 refers to the dimension of the side parallel to the atomization surface 11 in the cross - section of the third heat - generating segment 213 perpendicular to the current - flowing direction.

[0057] In addition, it should also be noted that the above - mentioned method of taking the reduction of the width of the heat - generating segment 2121 as an example is only an exemplary way to achieve R2≥R3 and R2≥R1. However, the present application is not limited thereto. Exemplarily, R2≥R3 and R2≥R1 can also be achieved by changing the material of the heat - generating segment 2121.

[0058] In addition, the heating element 2 further includes a plurality of electrode contact areas 22, and electrode contact areas 22 are connected to both ends of the heating area 21. Specifically, as Figures 2-4As shown, one end of the first heating section 211 connected to the second heating section 212 is the first series connection end, and one end of the third heating section 213 connected to the second heating section 212 is the second series connection end. Electrodes contact areas 22 are connected to the ends of the first heating section 211 far from the first series connection end and the ends of the third heating section 213 far from the second series connection end. In this way, it is convenient for both ends of the heating element 2 to be connected to the positive and negative electrodes of the power supply, and then it is convenient for the heating element 2 to be energized and generate heat.

[0059] In addition, as mentioned above, in order to avoid short circuits, a gap is formed between adjacent heating sections and adjacent heating sub-sections 2121; in some preferred embodiments, the distance between adjacent heating sections and adjacent heating sub-sections 2121 is greater than the width of any one of the first heating section 211, the heating sub-section 2121, and the third heating section 213.

[0060] Further preferably, the distance between adjacent heating sections and adjacent heating sub-sections 2121 is consistent. To further optimize the distribution of the heating structure, improve the uniformity of temperature distribution, and improve the atomization efficiency.

[0061] In addition, both the substrate 1 and the heating element 2 are porous structures, and the porosity of the substrate 1 is greater than that of the heating element 2. In this way, it is ensured that the entire atomization core can be supplied with sufficient liquid (such as e-liquid) during the atomization process, improving the stability of the atomization process and thus improving the atomization effect. In an exemplary embodiment, the porosity of the substrate 1 is greater than 50%, and the porosity of the heating element 2 is less than 50%.

[0062] In addition, as Figure 4 shown, the atomization surface 11 of the substrate 1 includes a first region 111 and a second region 112. Among them, the first region 111 is the region for installing the heating area 21 of the heating element 2; the second region 112 surrounds the first region 111; in the direction parallel to the atomization surface 11 (such as the first direction and the second direction), the size ratio of the first region 111 to the atomization surface 11 is less than or equal to 0.7. To facilitate the atomization area of the atomization core to be set near the central area of the atomization surface 11, which is conducive to improving the atomization effect. Exemplarily, continuing as Figure 4 shown, in the second direction, the size of the second region 112 is L3, the size of the atomization surface 11 is L4, and the ratio of L3 to L4 is 0.7.

[0063] In addition, regarding the formation method of the heating element 2, in some embodiments, the heating element 2 is a conductive film layer integrally formed on the atomization surface 11; in some other embodiments, the heating element 2 is an etched metal sheet integrally formed on the atomization surface 11.

[0064] The embodiment of the present application further provides an atomizer, which includes a liquid storage part 3 and the atomization core of the above embodiment. Among them, the liquid storage part 3 is provided with a liquid storage cavity 31 and an air flow channel 32. The liquid storage cavity 31 has a liquid outlet 311. At least part of the atomization core is arranged at the liquid outlet 311 and is in liquid communication with the liquid storage cavity 31. The atomization surface 11 of the atomization core faces away from the liquid outlet 311 and is exposed in the air flow channel 32.

[0065] In some specific embodiments, the atomizer has opposite proximal and distal ends. The atomizer includes a mouthpiece 5 provided at the proximal end of the atomization part and communicating with the air flow channel 32. The liquid outlet 311 is located at the distal end of the liquid storage cavity 31. Among them, the air flow channel 32 is located on one side of the liquid storage cavity 31 and extends from the distal end to the proximal end to the mouthpiece 5.

[0066] In some specific embodiments, a protrusion 12 is provided on one side of the base body 1 of the atomization core facing away from the heating element 2. The protrusion 12 penetrates through the liquid outlet 311 to increase the contact area with the liquid in the liquid storage cavity 31. At the same time, it can guide air bubbles into the liquid storage cavity 31 to avoid air bubbles blocking in the liquid outlet 311. Specifically, the protrusion 12 can extend into the liquid storage cavity 31, or the end surface of the protrusion 12 away from the atomization surface 11 is flush with the inner end wall of the liquid outlet 311 of the liquid storage cavity 31.

[0067] In some specific embodiments, the atomizer further includes a power supply part 4. The power supply part 4 has a battery 41 electrically connected to the atomization core. The power supply part 4 and the atomization part can adopt a split structure that can be detachably connected by means such as magnetic attraction, snap connection, screw connection, etc., or can also adopt a non-detachable integrated structure. The present application does not make specific limitations on this.

[0068] The basic principle of the present application has been described above in combination with specific embodiments. However, it should be noted that the advantages, advantages, effects, etc. mentioned in the present application are only examples and not limitations. It cannot be considered that these advantages, advantages, effects, etc. are essential for each embodiment of the present application. In addition, the above-disclosed specific details are only for the purpose of illustration and easy understanding, rather than limitations. These details are not limited to the present application must adopt the above specific details to implement.

[0069] It should also be noted that in the devices, equipment and methods of the present application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of the present application.

[0070] The foregoing description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Thus, the present application is not intended to be limited to the aspects shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0071] It should be understood that the ordinal numbers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only for more clearly elaborating the technical solutions and cannot be used to limit the protection scope of the present application.

[0072] The foregoing description has been given for purposes of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although several example aspects and embodiments have been discussed above, those skilled in the art will recognize some of their variations, modifications, alterations, additions, and subcombinations.

Claims

1. An atomizer core, characterized in that: include: a substrate having an atomized surface; A heating element is arranged on the atomizing surface, and includes a heating area, wherein the heating area includes a first heating section, a second heating section and a third heating section connected in series in sequence; The second heating section includes at least two parallel heating segments, and the plurality of heating segments are arranged side by side along a first direction. In the first direction, the second heating section is located between the first heating section and the third heating section.

2. The atomizer core according to claim 1, characterized in that: The first heating segment, the second heating segment and the third heating segment are sequentially connected in series in the first direction, and extend in a second direction intersecting the first direction.

3. The atomizer core according to claim 2, characterized in that: The first heating segment and the third heating segment both extend in the first direction and the second direction and define an enclosed area, and the second heating segment is located in the enclosed area defined by the first heating segment and the third heating segment.

4. The atomizer core according to claim 3, characterized in that: The first heating segment and the third heating segment each include a first straight line segment extending along a first direction, a second straight line segment extending along the second direction, and a curved line segment connecting the first straight line segment and the second straight line segment.

5. The atomizer core according to claim 1, characterized in that: The heating element is a centrally symmetrical structure, and the second heating section is located in the central area of ​​the heating element.

6. The atomizer core according to claim 1, characterized in that: The resistance per unit length of the first heating segment is R1, the resistance per unit length of the second heating segment is R2, and the resistance per unit length of the third heating segment is R3; Among them, R2≥R3, and R2≥R1.

7. The atomizer core according to claim 6, characterized in that: The width of the heating segment is smaller than the width of the first heating segment, and the width of the heating segment is smaller than the width of the third heating segment.

8. The atomizer core according to claim 7, characterized in that: The sum of the widths of all the heating segments is less than or equal to the width of the first heating segment, and the sum of the widths of all the heating segments is less than or equal to the width of the third heating segment.

9. The atomizer core according to claim 1, characterized in that: The distances between adjacent heating sections and adjacent heating sub-sections are greater than the width of any one of the first heating section, the heating sub-section and the third heating section; and / or, The distances between adjacent heating sections and adjacent heating sub-segments are consistent.

10. The atomizer core according to claim 1, characterized in that: The atomized surface comprises: The first area is an area for installing the heating area of ​​the heating element; a second area surrounding the first area; Wherein, in a direction parallel to the atomizing surface, a size ratio of the first region to the atomizing surface is less than or equal to 0.

7.

11. An atomizer, characterized in that: The atomizer comprises a liquid storage portion and an atomizing core as claimed in any one of claims 1 to 10, wherein: The liquid storage part is provided with a liquid storage cavity and an air flow channel, and the liquid storage cavity has a liquid outlet; At least a portion of the atomizer core is disposed at the liquid outlet and is in liquid communication with the liquid storage chamber, and an atomizing surface of the atomizer core is away from the liquid outlet and exposed in the air flow channel.

Images