Heating components, atomizers and electronic cigarettes

Abstract

The present invention relates to a heating component, an atomizer and an electronic cigarette. The heating component is used to atomize tobacco oil, and includes a substrate, which is a porous ceramic, and has a liquid guide surface and an atomization surface. The tobacco oil enters the substrate from the liquid guide surface, and a through hole is provided on the substrate, and the through hole extends from the liquid guide surface to the atomization surface. By providing a through hole on the substrate, the heating component is used as a heating component of the atomizer, so that the oil storage chamber is not easy to form a negative pressure as the tobacco oil is consumed, and the tobacco oil in the oil storage chamber can continuously reach the atomization surface of the substrate, so that the atomizer is not easy to produce a burnt smell due to dry burning, thereby improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of smoking device technology, and in particular to a heating element, atomizer, and electronic cigarette. Background Technology

[0002] Electronic cigarettes are electronic products that mimic traditional cigarettes. They primarily use atomization and other methods to turn e-liquid into vapor for users to inhale.

[0003] Current e-cigarettes mainly consist of two parts: an atomizer and a battery. The atomizer is the component that atomizes e-liquid into vapor. It includes a reservoir for storing e-liquid and a heating element for atomizing the e-liquid into vapor. However, as the e-liquid is consumed, the atomizer is prone to poor liquid delivery, resulting in a burnt taste and a poor vaping experience for the user. Summary of the Invention

[0004] Therefore, it is necessary to provide an atomizer that facilitates smooth liquid delivery.

[0005] In addition, a heating element that allows for smooth liquid delivery to the atomizer and an electronic cigarette that is less likely to produce a burnt taste are also provided.

[0006] A heating element for atomizing e-liquid includes a substrate, the substrate being a porous ceramic, the substrate having a liquid guiding surface through which the e-liquid enters the substrate, and the substrate having through holes arranged along the flow direction of the e-liquid.

[0007] The aforementioned heating element, by creating through holes in the substrate, prevents the oil reservoir from developing negative pressure as the e-liquid is consumed when used as the heating component of the atomizer. This allows the e-liquid in the reservoir to continuously reach the atomization surface of the substrate, making the atomizer less prone to producing a burnt taste due to dry burning and improving the user experience.

[0008] In one embodiment, the diameter of the through hole is 0.1 mm to 0.8 mm.

[0009] In one embodiment, there are multiple through holes, which are spaced apart on the substrate.

[0010] In one embodiment, the number of through holes is two.

[0011] In one embodiment, the liquid guiding surface is opposite to the atomizing surface, and the heating component further includes a heating element disposed on the atomizing surface. The heating element includes a contact electrode and a heating circuit electrically connected to the contact electrode, and the through hole is close to the connection between the contact electrode and the heating circuit.

[0012] In one embodiment, the contact electrode is strip-shaped, and there are two contact electrodes arranged in parallel and spaced apart. The heating circuit is S-shaped and is disposed between the two contact electrodes. The two ends of the heating circuit are electrically connected to the two contact electrodes respectively.

[0013] In one embodiment, the width of the contact electrode is 1 mm to 2 mm, and the thickness of the contact electrode is 10 μm to 50 μm; and / or

[0014] The width of the heating circuit is 0.3mm to 0.5mm, and the thickness of the heating circuit is 40μm to 80μm.

[0015] In one embodiment, the thickness of the substrate is 1.5 mm to 3.0 mm; and / or

[0016] The porosity of the matrix is ​​48% to 60%.

[0017] An atomizer, comprising:

[0018] An oil storage chamber for storing e-liquid, the oil storage chamber having an oil outlet;

[0019] A heating element is used to atomize the e-liquid. The heating element includes a substrate and a heating element. The substrate is a porous ceramic and has a liquid guiding surface and an atomizing surface. The heating element is disposed on the atomizing surface. The liquid guiding surface is close to the oil outlet. The e-liquid in the oil storage chamber enters the substrate through the liquid guiding surface. A through hole is provided on the substrate, which extends from the liquid guiding surface and penetrates through the atomizing surface.

[0020] A liquid guiding component is disposed on the liquid guiding surface and covers the oil outlet. The e-liquid in the oil storage cavity flows through the liquid guiding component to the liquid guiding surface.

[0021] In one embodiment, the diameter of the through hole is 0.1 mm to 0.8 mm.

[0022] In one embodiment, the number of through holes is two.

[0023] In one embodiment, the liquid guiding element is liquid guiding cotton.

[0024] In one embodiment, the atomizer further includes a seal disposed between the wall of the oil reservoir and the side wall of the substrate to seal the gap between the oil reservoir and the substrate.

[0025] A method for preparing a heating element, comprising:

[0026] A plate-shaped substrate is prepared, wherein the substrate is a porous ceramic.

[0027] A plurality of spaced heating elements are fabricated on the substrate; and

[0028] After opening multiple through holes in the substrate, the substrate is cut to obtain multiple heating components, each of which includes the heating element and the through hole.

[0029] In one embodiment, the cutting is laser cutting.

[0030] An electronic cigarette includes the above-described heating component, a heating component prepared by the above-described method for preparing the heating component, or the above-described atomizer. Attached Figure Description

[0031] Figure 1 A partial view of an atomizer according to one embodiment;

[0032] Figure 2 for Figure 1 A top view of the heating element of the atomizer shown;

[0033] Figure 3 The heating components are arranged in an array on a substrate and are to be cut. Detailed Implementation

[0034] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Some embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be thorough and complete.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0036] Please see Figure 1 and Figure 2 One embodiment of the atomizer 10 includes an oil storage chamber 110 and a heating element 120.

[0037] The oil storage chamber 110 is used to store e-liquid and has an oil outlet 111.

[0038] The heating element 120 is used to atomize e-liquid. The heating element 120 includes a substrate 121 and a heating element 123. The substrate 121 is a porous ceramic and has a liquid guiding surface 121a and an atomizing surface 121b opposite to the liquid guiding surface 121a. The liquid guiding surface 121a is located near the oil outlet 111. E-liquid in the oil storage chamber 110 enters the substrate 121 through the liquid guiding surface 121a and flows to the atomizing surface 121b, where it is atomized. A through hole 121c is formed on the substrate 121, extending from the liquid guiding surface 121a through the atomizing surface 121b. In this embodiment, the through hole 121c is perpendicular to both the liquid guiding surface 121a and the atomizing surface 121b.

[0039] Specifically, the material of the substrate 121 is at least one selected from diatomaceous earth, quartz, alumina, silicon carbide, and cordierite. Of course, in other embodiments, the material of the substrate 121 is not limited to the above description, as long as it can be used to prepare porous ceramics. The porosity of the substrate 121 is 48%–60%; the thickness of the substrate 121 is 1.5 mm–3.0 mm. Of course, the thickness of the substrate 121 is not limited to the above description and can be adjusted according to requirements.

[0040] Furthermore, the diameter of the through hole 121c is 0.1mm to 0.8mm. Even further, the diameter of the through hole 121c is 0.3mm to 0.5mm. Setting the diameter of the through hole 121c as described above ensures smooth liquid flow and prevents leakage. If the diameter of the through hole 121c is too small, the ventilation effect and liquid guiding effect will be insignificant.

[0041] Specifically, the number of through holes 121c is at least one. When there are multiple through holes 121c, the multiple through holes 121c are spaced apart on the substrate 121, and all the multiple through holes 121c are arranged along the flow direction of the e-liquid. Further, the number of through holes 121c is two. Setting the number of through holes 121c to two can make the overall downward flow speed of the e-liquid more uniform. Of course, the shape of the through holes 121c is not particularly limited, as long as it penetrates the substrate 121.

[0042] In one embodiment, the thickness of the substrate 121 is 1.5 mm to 3.0 mm, the diameter of the through hole 121c is 0.1 mm to 0.8 mm, and there are two through holes 121c, which are spaced apart on the substrate 121.

[0043] A heating element 123 is disposed on the atomizing surface 121b and is used to provide a heat source to atomize the e-liquid. Specifically, the heating element 123 includes a heating circuit 123a and a contact electrode 123b. The contact electrode 123b is disposed at both ends of the heating circuit 123a and is used to connect the power supply and the heating circuit 123a. Further, the heating circuit 123a has a width of 0.3mm to 0.5mm and a thickness of 40μm to 80μm. The contact electrode 123b has a width of 1mm to 2mm, a thickness of 10μm to 50μm, and a length of 2mm to 4mm.

[0044] In one embodiment, the contact electrode 123b is strip-shaped, and there are two contact electrodes 123b, which are spaced apart. The heating circuit 123a is arranged in an S-shape between the two contact electrodes 123b, and the two ends of the heating circuit 123a are electrically connected to one end of each of the two contact electrodes 123b. The through hole 121c is located near the connection between the contact electrode 123b and the heating circuit 123a.

[0045] In the illustrated embodiment, the contact electrode 123b is rectangular, and two contact electrodes 123b are arranged parallel and spaced apart; the heating circuit 123a is S-shaped and located between the two contact electrodes 123b; two through holes 121c are disposed inside the two contact electrodes 123b and on both sides of the heating circuit 123a. Of course, in some other embodiments, the thickness, shape, and size of the contact electrode 123b are not limited to the above description, and the thickness, shape, and size of the heating circuit 123a are also not limited to the above description, and can all be adjusted according to actual needs.

[0046] In one embodiment, the atomizer 10 further includes a liquid guiding element 130. The liquid guiding element 130 is disposed on the liquid guiding surface 121a and is used to absorb e-liquid. Typically, the liquid guiding element 130 is kept moist to ensure continuous atomization of the e-liquid, thereby preventing burning due to insufficient e-liquid when the e-liquid is in direct contact with the substrate 121. Furthermore, when the aperture of the through-hole 121c is larger and less prone to poor liquid guiding, the liquid guiding element 130 also makes it less likely for e-liquid to flow directly out of the through-hole 121c without atomization, thus improving e-liquid utilization and enhancing the safety of the electronic cigarette. Further, the liquid guiding element 130 is made of liquid guiding cotton; the thickness of the liquid guiding element 130 is 0.4mm to 0.8mm. Of course, in other embodiments, the liquid guiding element 130 is not limited to liquid guiding cotton, and other materials with liquid guiding functions commonly used in the art can also be used. The thickness of the liquid guiding element 130 is also not limited to the above description and can be adjusted according to actual needs.

[0047] In the illustrated embodiment, the liquid guiding element 130 completely covers the liquid guiding surface 121a. Of course, in some other embodiments, the liquid guiding element 130 may cover part of the liquid guiding surface 121a, as long as the liquid guiding element 130 completely blocks the through hole 121c.

[0048] In one embodiment, the atomizer 10 further includes a sealing element 150. The sealing element 150 is disposed between the cavity wall of the oil reservoir 110 and the side wall of the base 121 to seal the gap between the oil reservoir 110 and the base 121. Specifically, the sealing element 150 has a receiving cavity communicating with the oil reservoir 110, the outer wall of the sealing element 150 is sealed to the side wall of the oil reservoir 110, and the base 121 is housed within the receiving cavity and sealed to the side wall of the receiving cavity. Further, the sealing element 150 is formed by connecting a hollow thick portion 151 and a hollow thin portion 153, the thick portion 151 and the thin portion 153 having the same central axis, a groove being formed at the connection between the thick portion 151 and the thin portion 153, and the base 121 abutting against the groove. Even further, the thickness of the thick portion 151 is 1.3 mm to 1.5 mm, and the thickness of the thin portion 153 is 0.4 mm to 0.8 mm.

[0049] In the illustrated embodiment, the liquid guide 130 covers the oil outlet 111, the sidewall of the liquid guide 130 and part of the surface near the oil outlet 111 are in contact with the seal 150, and the liquid guide 130 covers the through hole 121c.

[0050] When the atomizer 10 is in use, the e-liquid in the reservoir 110 flows out of the outlet 111, then through the liquid guiding surface 121a of the substrate 121 to the atomizing surface 121b of the substrate 121. It is then heated by the heating element 123 on the atomizing surface 121b of the substrate 121 and atomized to form vapor. By creating a through-hole 121c in the substrate 121 in the same direction as the e-liquid flow, the atomizer 10 makes it easier for the reservoir 110 to connect with the outside environment and prevents negative pressure from forming as the e-liquid is consumed. This ensures that the e-liquid in the reservoir 110 continuously reaches the atomizing surface 121b of the substrate 121, reducing the likelihood of a burnt taste due to dry burning and improving the user experience.

[0051] An electronic cigarette according to one embodiment includes the atomizer 10 or the heating element 120 described above.

[0052] The aforementioned electronic cigarette, including the aforementioned atomizer 10 or the aforementioned heating element 120, is less likely to produce a burnt taste due to poor liquid delivery, thus improving the user experience.

[0053] Please see Figures 2-3 One embodiment of the method for preparing the heating element 120 includes the steps of forming a through hole 121c on a substrate 121 and preparing a heating element 123. Specifically, the method includes steps S110 to S140.

[0054] Step S110: Prepare substrate 121.

[0055] Specifically, after the preform is shaped, it is sintered to obtain the matrix 121. The material of the matrix 121 is at least one of diatomaceous earth, quartz, alumina, silicon carbide, and cordierite. Of course, in some other embodiments, the material of the matrix 121 is not limited to the above description, as long as it can prepare porous ceramics. Further, the sintering temperature is 1000℃~1180℃; the porosity of the matrix 121 is 48%~60%.

[0056] In this embodiment, the preform is plate-shaped, and the thickness of the substrate 121 is 1.5 mm to 3.0 mm. Of course, in other embodiments, the shape, thickness, and size of the preform can be designed according to specific needs. When preparing multiple substrates 121 in an array manner, the thickness of the substrate 121 should not be too thick, otherwise the deformation during sintering will be large.

[0057] Step S120: Prepare heating element 123 on substrate 121.

[0058] Specifically, the step of fabricating the heating element 123 on the substrate 121 includes fabricating the heating circuit 123a and fabricating the contact electrode 123b.

[0059] In one embodiment, the step of fabricating the heating element 123 on the substrate 121 includes: first, using one surface of the substrate 121 as an atomizing surface 121b, forming a circuit pattern on the atomizing surface 121b by printing, and then sintering to obtain a heating circuit 123a; next, forming an electrode pattern on the substrate 121 with the heating circuit 123a formed, wherein the electrode pattern is connected to the heating circuit 123a, and then sintering to obtain a contact electrode 123b. Further, in the step of fabricating the heating circuit 123a, the sintering temperature is 950℃~1100℃. In the step of fabricating the contact electrode 123b, the sintering temperature is 950℃~1100℃, which is lower than the sintering temperature in the step of fabricating the heating circuit 123a.

[0060] In this embodiment, the step of preparing the heating element 123 on the substrate 121 includes: providing a first template, placing the first template on the atomizing surface 121b, printing multiple spaced circuit patterns (e.g., arrayed) on the first template to form the atomizing surface 121b, and then sintering to obtain multiple heating circuits 123a; then providing a second template, placing the second template on the atomizing surface 121b, printing multiple electrode patterns on the second template to form the atomizing surface 121b, each electrolytic pattern being connected to both ends of the corresponding heating circuit 123a, and then sintering to form multiple spaced heating elements 123.

[0061] In one embodiment, the heating circuit 123a has a width of 0.3 mm to 0.5 mm and a thickness of 40 μm to 80 μm. The contact electrode 123b has a width of 1 mm to 2 mm, a thickness of 10 μm to 50 μm, and a length of 2 mm to 4 mm.

[0062] In the illustrated embodiment, the contact electrode 123b is rectangular, and two contact electrodes 123b are arranged in parallel and spaced apart; the heating circuit 123a is S-shaped and located between the two contact electrodes 123b. Of course, in some other embodiments, the thickness, shape, and size of the contact electrode 123b are not limited to the above description, and the thickness, shape, and size of the heating circuit 123a are also not limited to the above description, and can all be adjusted according to actual needs.

[0063] Of course, there is no strict order between the steps of fabricating the heating circuit 123a and the steps of fabricating the contact electrode 123b. In some other embodiments, the contact electrode 123b can be fabricated first, and then the heating circuit 123a can be fabricated. In other other embodiments, the circuit pattern and electrode pattern can be fabricated first, and then the circuit pattern and electrode pattern can be sintered simultaneously to obtain the heating element 123.

[0064] Step S130: Open a through hole 121c on the substrate 121.

[0065] Specifically, a laser is used to create through holes 121c on the substrate 121. Further, the diameter of the through hole 121c is 0.1mm to 0.8mm. Even further, the diameter of the through hole 121c is 0.3mm to 0.5mm. Of course, in other embodiments, other commonly used methods in the art can also be used to create the through holes 121c, with the extension direction of the through hole 121c being the same as the flow direction of the e-liquid. In the illustrated embodiment, each heating element 123 has two through holes 121c, which are spaced apart and disposed inside the two contact electrodes 123b, and located on both sides of the heating circuit 123a.

[0066] In this embodiment, the heating element 123 is prepared first, and then a through hole 121c is formed in the substrate 121. Of course, in other embodiments, the through hole 121c can be formed in the substrate 121 first, and then the heating element 123 is prepared.

[0067] Step S140: Cutting to obtain heating component 120.

[0068] Specifically, a substrate 121 with multiple heating elements 123 is laser-cut to obtain multiple heating components 120. Each heating component 122 has a heating element 123 and a corresponding through hole 121c. In this embodiment, the laser power is 500W to 1000W. Laser cutting allows the laser energy to sinter the cut edges, preventing powder from falling off after cutting. Of course, in other embodiments, other cutting methods commonly used in the art can also be used to cut the substrate 121 with multiple heating elements 123.

[0069] The above-mentioned method for preparing the heating element 120 involves first preparing a substrate 121, then preparing multiple heating elements 123 and through holes 121c on the substrate 121, and finally cutting to obtain multiple heating elements 120, thereby improving production efficiency. Furthermore, in the above-mentioned method for preparing the heating element 120, since the dimensional change of the substrate 121 before and after sintering can be determined (i.e., the thickness of the substrate 121 after sintering is a constant), the deformation of the substrate 121 and the heating circuit 123a during simultaneous sintering is avoided. Moreover, the deformation of the heating circuit 123a during subsequent sintering is also very small. Therefore, the above-mentioned method for preparing the heating element 120 also avoids the problem of large discrepancies between the actual and designed dimensions caused by sintering the substrate 121 together with the heating circuit 123a and contact electrode 123b, allowing for precise control of the dimensions of each heating element.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A heating component for atomizing cigarette oil, characterized in that: The substrate comprises a porous ceramic, the substrate has a liquid guide surface and an atomization surface, the smoke oil enters the substrate from the liquid guide surface, and a through hole is provided on the substrate, the through hole extends from the liquid guide surface to the atomization surface; Wherein, the aperture of the through hole is 0.3 mm to 0.8 mm.

2. The heating component according to claim 1, characterized in that: The through hole has a diameter of 0.3 mm to 0.5 mm.

3. The heating component according to any one of claims 1 to 2, characterized in that: There are multiple through holes, and the multiple through holes are arranged on the base body at intervals.

4. The heating component according to claim 3, characterized in that: The number of the through holes is two.

5. The heating component according to claim 1, characterized in that: The liquid guiding surface is opposite to the atomizing surface. The heating component also includes a heating element. The heating element is arranged on the atomizing surface. The heating element includes a contact electrode and a heating circuit electrically connected to the contact electrode. The through hole is close to the connection between the contact electrode and the heating circuit.

6. The heating component according to claim 5, characterized in that: The contact electrode is strip-shaped, there are two contact electrodes, the two contact electrodes are arranged in parallel and spaced apart, the heating circuit is S-shaped, the heating circuit is arranged between the two contact electrodes, and the two ends of the heating circuit are electrically connected to the two contact electrodes respectively.

7. The heating component according to claim 5, characterized in that: The width of the contact electrode is 1 mm to 2 mm, and the thickness of the contact electrode is 10 μm to 50 μm; and / or The width of the heating circuit is 0.3 mm to 0.5 mm, and the thickness of the heating circuit is 40 μm to 80 μm.

8. The heating component according to claim 5, characterized in that: The thickness of the substrate is 1.5 mm to 3.0 mm; and / or The porosity of the matrix is ​​48% to 60%.

9. An atomizer, characterized in that: include: An oil storage chamber, used for storing tobacco oil, wherein the oil storage chamber has an oil outlet; A heating component, used for atomizing the e-liquid, the heating component comprising a substrate and a heating element, the substrate being a porous ceramic, the substrate having a liquid guide surface and an atomizing surface, the heating element being arranged on the atomizing surface, the liquid guide surface being close to the oil outlet, the e-liquid in the oil storage cavity entering the substrate from the liquid guide surface, a through hole being provided on the substrate, the through hole extending from the liquid guide surface to the atomizing surface, the aperture of the through hole being 0.3 mm to 0.8 mm; A liquid guide member is arranged on the liquid guide surface and covers the oil outlet, and the tobacco oil in the oil storage cavity flows to the liquid guide surface through the liquid guide member.

10. The atomizer according to claim 9, characterized in that The through hole has a diameter of 0.3 mm to 0.5 mm.

11. The atomizer according to claim 9, characterized in that The number of the through holes is two.

12. The atomizer according to any one of claims 9 to 11, characterized in that: The liquid-conducting member is liquid-conducting cotton.

13. The atomizer according to claim 12, characterized in that The atomizer further comprises a sealing member, which is arranged between a cavity wall of the oil storage cavity and a side wall of the base body to seal a gap between the oil storage cavity and the base body.

14. A method for preparing a heating component, characterized in that: include: preparing a plate-shaped substrate, wherein the substrate is porous ceramic; Preparing a plurality of heating elements spaced apart from each other on the substrate; and After a plurality of through holes are formed on the substrate, the substrate is cut to obtain a plurality of heating components, each of which includes the heating element and the through hole; Wherein, the aperture of the through hole is 0.3 mm to 0.8 mm.

15. The method for preparing a heating component according to claim 14, characterized in that: The cutting is laser cutting.

16. An electronic cigarette, characterized in that: It comprises the heating component according to any one of claims 1 to 8, the heating component prepared by the preparation method of the heating component according to any one of claims 14 to 15, or the atomizer according to any one of claims 9 to 13.

Images