Heater and heating atomizer

Abstract

The heater (10) is a heating assembly including a central tube (100), a first electrode (200), and a second electrode (300), the central tube (100) being made of an insulating material and having a cavity (150), the first electrode (200) and the second electrode (300) both being provided on the central tube (100), a heating assembly (11) capable of generating a plasma arc between the first electrode (200) and the second electrode (300) within the cavity (150) of the central tube (100), and an outer sleeve (12) fitted around the heating assembly (11) and configured to contact the atomization medium.

Description

[Technical field]

[0001] The present application relates to the technical field of heating atomization devices, and in particular to a heater and a heating atomization device including the heater. [Background technology]

[0002] A heating atomizer is typically used to heat a solid atomizing medium and atomize the atomizing medium in a heated, non-combustion manner to generate an aerosol for inhalation by a user. The heater of a conventional heating atomizer typically heats and atomizes the atomizing medium in a resistance heating or electromagnetic induction heating mode. However, the above heating modes usually have the disadvantage of a long pre-heating waiting time, which affects the heating speed of the atomizing medium. Summary of the Invention [Problem to be solved by the invention]

[0003] The technical problem that the present application aims to solve is how to improve the heating speed of a heater. [Means for solving the problem]

[0004] The heater is a heating assembly including a central tube, a first electrode, and a second electrode, the central tube being made of an insulating material and having a cavity, the first electrode and the second electrode both being mounted on the central tube, and capable of generating a plasma arc between the first electrode and the second electrode within the cavity of the central tube; and an outer sleeve fitted over the heating assembly and configured to contact the atomization medium.

[0005] The heating atomization device includes any one of the heaters described above.

[0006] The details of one or more embodiments of the invention are set forth in the drawings and description which follow. Other features, objects, and advantages of the invention will become apparent from the description, drawings, and claims. [Brief description of the drawings]

[0007] To better depict and explain the embodiments and / or examples of those inventions disclosed herein, reference may be made to one or more drawings, in which additional details or examples used to depict the drawings should not be construed as limiting the scope of any of the disclosed inventions, the currently depicted embodiments and / or examples, and the best modes of those inventions as currently understood.

[0008] [Figure 1] FIG. 1 is a perspective view of a heater according to a first embodiment. [Diagram 2] FIG. 2 is a plan sectional view of the heater shown in FIG. [Diagram 3] FIG. 2 is an exploded perspective cross-sectional view of the heater shown in FIG. [Figure 4] FIG. 1 is a perspective view of a heater according to a first embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] In order to facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings, in which there is shown a preferred embodiment of the present application. However, the present application may be embodied in many different forms and is not limited to the embodiments set forth herein. On the contrary, the purpose of providing these embodiments is to provide a more complete and thorough understanding of the present disclosure.

[0010] It should be noted that when an element is referred to as "fixed" to another element, the element may be directly on the other element, but there may also be intervening elements between them. When an element is referred to as "connected" to another element, the element may be directly connected to the other element, but there may also be intervening elements between them. As used herein, the terms "inner", "outer", "left", "right" and similar terms are merely for descriptive purposes and do not represent the only embodiments.

[0011] As shown in Figures 1, 2 and 3, a heating atomization device according to an embodiment of the present application includes a power source and a heater 10. The heater 10 is inserted into the atomization medium, and the power source supplies power to the heater 10 so that the heater 10 converts electrical energy into thermal energy. Finally, the atomization medium absorbs the heat of the heater 10 and is atomized to generate an aerosol. The heater 10 includes a heating assembly 11 and an outer sleeve 12. The outer sleeve 12 is fitted onto the heating assembly 11. When the heater 10 is inserted into the atomization medium, the outer sleeve 12 directly contacts the atomization medium. The heating assembly 11 includes a central tube 100, a first electrode 200 and a second electrode 300. When both poles of the power source supply power to the first electrode 200 and the second electrode 300, respectively, a plasma arc is generated between the first electrode 200 and the second electrode 300, and the plasma arc is located in the central tube 100, and the heat generated by the plasma arc is transferred to the atomization medium by radiation.

[0012] In some embodiments, the central tube 100 may be substantially circular, and the cross section of the central tube 100 may be circular. Of course, the cross section of the central tube 100 may be elliptical or regular polygonal. The central tube 100 has a top surface 120, a bottom surface 130, and a side surface 110, and the top surface 120 and the bottom surface 130 may be horizontally planar surfaces extending perpendicular to the axial direction of the central tube 100, and the side surface 110 is a vertical surface extending in the axial direction of the central tube 100. The top surface 120 and the bottom surface 130 may be understood as two end surfaces in the axial direction of the central tube 100, and the top surface 120 and the bottom surface 130 are connected to the opposite ends of the side surface 110, respectively, and the side surface 110 is provided to surround the edges of the top surface 120 and the bottom surface 130. The central tube 100 has a cavity 150 extending along its axial direction, the cavity 150 penetrating the top surface 120 and the bottom surface 130 at the same time, obviously, the cavity 150 has openings 140 on both the top surface 120 and the bottom surface 130. The central tube 100 is made of an insulating material and has high heat resistance, for example, the central tube 100 is made of a dense ceramic material containing sodium oxide and / or zirconium oxide, so that the central tube 100 has high insulating properties and structural strength. The wall thickness of the central tube 100 is 0.4mm-1mm, for example, the wall thickness may be 0.4mm-0.6mm, the specific value of the wall thickness may be 0.4mm, 0.5mm, or 0.6mm, etc., and this installation can effectively prevent the plasma arc from destroying the wall of the central tube 100. The inner diameter of the central tube 100 is 0.3 mm to 0.8 mm, and the specific value of the inner diameter of the central tube 100 may be 0.3 mm, 0.6 mm, 0.8 mm, etc., thereby making it possible to reasonably reduce the outer diameter of the entire central tube 100 and the heater 10, and to realize the miniaturization of the heater 10.

[0013] In some embodiments, the second electrode 300 has a generally columnar structure, and a portion of the second electrode 300 is inserted into the cavity 150 through the opening 140 in the bottom surface 130 of the central tube 100, so that the second electrode 300 penetrates into the cavity 150. The second electrode 300 may be made of a heat-resistant conductive material, for example, the material used for the second electrode 300 may be copper, tungsten and its alloy, carbon fiber, etc. The outer diameter of the portion of the second electrode 300 located in the cavity 150 may be 0.2 mm to 0.5 mm, for example, the outer diameter may be 0.2 mm, 0.3 mm, or 0.5 mm, etc.

[0014] 2 and 3, in some embodiments, the first electrode 200 includes a first covering portion 210 and a second covering portion 220, which may be made of the same material, for example, made of an infrared semiconductor material such as silicon carbide, so that the first covering portion 210 and the second covering portion 220 have an infrared radiation attribute, and further, the heat of the first covering portion 210 and the second covering portion 220 is radiated to the outside by infrared rays. The first covering portion 210 and the second covering portion 220 may be attached to the central tube 100 by painting, the first covering portion 210 is attached to the side peripheral surface 110, the second covering portion 220 is coated on the top surface 120, and the second covering portion 220 may cover the entire top surface 120 so as to cover the opening 140 of the top surface 120. When the power source is energized to the first covering portion 210 and the second electrode 300, the second covering portion 220 and the first covering portion 210 are electrically connected to each other, so that a plasma arc is generated between the second covering portion 220 and the second electrode 300 located in the cavity 150 of the central tube 100. The power source applied to the first electrode 200 and the second electrode 300 may be 10KV to 20KV, for example, the specific value of the voltage may be 10KV, 15KV, or 20KV, etc., so that the length of the plasma arc can be 4mm to 6mm. In order to ensure the effective generation of the plasma arc, the distance A between the second covering portion 220 and the second electrode 300 in the cavity 150 can be greater than the length of the plasma arc. The thickness of the second covering portion 220 may be greater than the thickness of the first covering portion 210, and the thickness of the second covering portion 220 may be understood as the length that the second covering portion 220 occupies in the axial direction of the central tube 100. For example, the thickness of the second covering portion 220 may be 0.1 mm to 1 mm, and the specific value of the thickness may be 0.1 mm, 0.5 mm, 1 mm, etc., thereby effectively preventing the plasma arc in the cavity 150 from destroying the second covering portion 220 and avoiding the plasma arc from leaking out of the cavity 150.

[0015] The first electrode 200 may further include a filling portion 230, and the material used for the filling portion 230 may be the same as that of the first covering portion 210 and the second covering portion 220. The filling portion 230 is generally columnar and connected to the second covering portion 220, and the filling portion 230 is accommodated in the cavity 150. In practice, when the second covering portion 220 is formed by coating, a part of the slurry is injected into the opening 140 close to the top surface 120 of the cavity 150, and then a layer of the slurry is coated on the top surface 120, and the filling portion 230 is formed after the slurry located in the cavity 150 is solidified, and the second covering portion 220 is formed after the slurry located on the top surface 120 is solidified. By providing the filling portion 230, it is possible to better prevent the ion arc from destroying the second covering portion 220. Of course, the distance A between the filling portion 230 and the second electrode 300 in the cavity 150 is also greater than the length of the plasma arc, ensuring the effective formation of the plasma arc. Since the first covering portion 210 and the second covering portion 220 are formed by applying a slurry, in order to ensure uniformity and continuity of the first covering portion 210 and the second covering portion 220, a rounded portion 160 or a chamfered portion is provided at the end of the central tube 100, and the rounded portion 160 or the chamfered portion is located between the side surface 110 and the top surface 120.

[0016] As shown in FIG. 4, in some embodiments, the first covering portion 210 and the second covering portion 220 may be made of different materials, the first covering portion 210 may be attached to the side peripheral surface 110 by painting, and the second covering portion 220 may be pre-processed and molded as a structural member, and then fixed to the top surface 120 by adhesion or the like, so that the second covering portion 220 covers the opening 140 of the top surface 120. It can be easily understood that the length of the second covering portion 220 in the axial direction of the central tube 100 is greater than the thickness of the first covering portion 210, and the axial length of the second covering portion 220 is greater than the thickness of the first covering portion 210, which prevents the plasma arc from destroying the second covering portion 220. Of course, such a second covering portion 220 may be connected to a columnar filling portion 230, and the filling portion 230 may be accommodated in the cavity 150.

[0017] A plasma arc is formed between the second covering part 220 and the second electrode 300, or between the filling part 230 and the second electrode 300, and the second covering part 220 is located on the top surface 120 of the central tube 100, and the filling part 230 is located in the cavity 150, so that the second covering part 220 and the second electrode 300 can be effectively prevented from occupying extra space in the radial direction of the central tube 10, and the outer diameter of the entire heater 10 can be reasonably reduced, and the miniaturized design of the heater 10 can be realized. At the same time, it is favorable to keep the temperature of each point in the circumferential direction of the heater 10 uniform, which improves the uniformity of the temperature of the entire heater 10 and realizes the uniform heating of the atomization medium.

[0018] In some embodiments, the first covering portion 210 includes an internal segment 212 and an external segment 211, and an end of the internal segment 212 and an end of the external segment 211 are connected to each other. The internal segment 212 is located inside the outer sleeve 12, and the external segment 211 is located outside the outer sleeve 12, which can be understood as the internal segment 212 being covered by the outer sleeve 12 and being located between the outer sleeve 12 and the central tube 100, and the external segment 211 being exposed outside the outer sleeve 12 without being covered by the outer sleeve 12. The part of the side surface 110 of the central tube 100 that is located inside the outer sleeve 12 is covered by the internal segment 212, thus ensuring the uniformity of the temperature at each point in the circumferential direction of the heater 10 and improving the uniformity of the temperature of the entire heater 10. The part of the side surface 110 located outside the outer sleeve 12 is partially covered by the external segment 211, and the thickness of the external segment 211 is smaller than that of the built-in segment 212, so that the external segment 211 can form an openwork structure, which reduces the probability that the heat of the central tube 100 is transferred to the external segment 211, ensures that the heat of the heater 10 is transferred to the atomization medium as much as possible, and improves the energy utilization rate of the heater 10. Meanwhile, by providing different openwork structures, the resistivity of the entire first electrode 200 can be changed in a wide range, and the openwork structure can also be connected in series with other resistors, thereby changing the discharge characteristics of the first electrode 200, effectively controlling the intensity and shape of the plasma arc, and finally adjusting the heating performance of the heater 10. In addition, the external segment 211 is advantageous in forming an electrical connection with the power source, which improves the assembly efficiency of the heater 10.

[0019] During operation, when the first electrode 200 and the second electrode 300 are energized, the first electrode 200 and the second electrode 300 generate a plasma arc located in the cavity 150, and the temperature of the plasma arc is high. When the central tube 100 absorbs the heat of the plasma arc, the temperature of the central tube 100 can reach 400°C to 800°C. The heat generated by the plasma arc is radiated to the atomization medium through the outer sleeve 12, and since the temperature of the plasma arc is high, the preheating time of the atomization medium can be significantly shortened to within 20 seconds, for example, within 10 seconds, ensuring that the atomization medium is atomized to generate an aerosol within a short time of inhalation by the user, and ultimately improving the heating speed of the entire heater 10.

[0020] As shown in FIG. 2, in some embodiments, the heating assembly 11 further includes an infrared radiation film 400, which may cover the first covering portion 210 and the second covering portion 220 at the same time, or may cover only the first covering portion 210. When the infrared radiation film 400 absorbs heat, the heat is radiated to the atomization medium by infrared rays. If the direction perpendicular to the axial direction of the central tube 100 is taken as the reference direction, the reference direction may be understood as the radial direction of the central tube 100, and the outer sleeve 12 and the entire heating assembly 11 have a gap B in the radial direction of the central tube 100, and the width of the gap B may be 0.05 mm to 0.3 mm. For example, the specific value of the gap B may be 0.05 mm, 0.1 mm, or 0.3 mm, etc. By providing the gap B, a non-contact relationship is formed between the outer sleeve 12 and the heating assembly 11, effectively preventing the heat of the heating assembly 11 from being directly transferred to the outer sleeve 12 by contact conduction, and ensuring that the temperature of the outer sleeve 12 is lower than that of the heating assembly 11. The tube wall thickness of the outer sleeve 12 is 0.3mm-0.5mm, and the outer diameter of the outer sleeve 12 is 2.2mm-3.5mm, so that the outer diameter of the outer sleeve 12 can be reasonably small and the miniaturized design of the heater 10 can be realized. The outer sleeve 12 may be made of quartz material, which has small absorptivity and reflectivity to infrared rays, so that the outer sleeve 12 has strong transmittance to infrared rays, which reduces the heat of infrared rays absorbed by the outer sleeve 12, and ensures that the temperature of the outer sleeve 12 does not exceed 350°C, and ensures that most of the heat generated by the heating assembly 11 is radiated to the atomization medium by infrared rays. Since the atomizing medium has a high absorptivity for infrared rays, the atomizing medium absorbs heat and atomizes in a short time, and further increases the heating speed of the heater 10.

[0021] The technical features of the above embodiments can be combined in any combination. For the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but all such combinations should be considered to fall within the scope of the present specification.

[0022] The above examples only describe some embodiments of the present application, and although the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent of the present application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements belong to the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application should be based on the scope of the attached claims.

Claims

1. a heating assembly including a central tube, a first electrode, and a second electrode, the central tube being made of an insulating material and having a cavity, the first electrode and the second electrode both being disposed on the central tube, the heating assembly being capable of generating a plasma arc between the first electrode and the second electrode within the cavity of the central tube; and an outer sleeve fitted over the heating assembly and configured to contact an atomization medium.

2. 2. The heater of claim 1, wherein the first electrode includes a first covering portion and a second covering portion connected to each other, the central tube has a side circumferential surface and a top surface, the side circumferential surface extends along the axial direction of the central tube and surrounds the top surface, the cavity has an opening on the top surface, the first covering portion is attached to the side circumferential surface, and the second covering portion is attached to the top surface and covers the opening.

3. 3. The heater of claim 2, wherein the first electrode further includes a filler portion, the filler portion being connected to the second cover portion and housed within the cavity.

4. The heater of claim 3 , wherein the filling portion and the second covering portion are made of the same material.

5. The heater of claim 2, characterized in that both the first covering portion and the second covering portion are made of the same or different materials, and the length of the second covering portion in the axial direction of the central tube is greater than the thickness of the first covering portion.

6. 3. The heater of claim 2, wherein the first coating portion and the second coating portion are both made of an infrared semiconductor material.

7. 3. The heater of claim 2, wherein the first covering portion includes an internal segment and an external segment connected to each other, the internal segment being located within the outer sleeve, the external segment being located outside the outer sleeve, a portion of the side surface located within the outer sleeve being entirely covered by the internal segment, a portion of the side surface located outside the outer sleeve being partially covered by the external segment, and a thickness of the external segment being smaller than a thickness of the internal segment.

8. The heater according to claim 7, characterized in that the external segments are provided with an openwork structure.

9. 3. The heater according to claim 2, further comprising an infrared emitting film, the infrared emitting film covering the first covering portion or covering the first covering portion and the second covering portion.

10. The heater according to claim 1 , wherein the second electrode is columnar and extends through the cavity.

11. 11. The heater of claim 10, wherein the second electrode is made of copper, tungsten, or carbon fiber material.

12. 11. The heater according to claim 10, wherein the outer diameter of the portion of the second electrode located within the cavity is 0.2 mm to 0.5 mm.

13. 2. The heater of claim 1, wherein the central tube has a circular cross section and is made of a dense ceramic material including sodium oxide or zirconium oxide.

14. The heater of claim 1, characterized in that a direction perpendicular to the axial direction of the central tube is taken as a reference direction, and there is a gap between the outer sleeve and the heating assembly in the reference direction, and the width of the gap is 0.05 mm to 0.3 mm.

15. 2. The heater according to claim 1, wherein the outer sleeve is made of quartz material, the thickness of the tube wall of the outer sleeve is 0.3 mm to 0.5 mm, and the outer diameter of the outer sleeve is 2.2 mm to 3.5 mm.

16. 2. The heater according to claim 1, wherein the central tube has a wall thickness of 0.4 mm to 1 mm, and an inner diameter of the central tube is 0.3 mm to 0.8 mm.

17. 2. The heater of claim 1, wherein the voltage applied to the first electrode and the second electrode is 10 KV to 20 KV.

18. 2. The heater of claim 1, wherein the length of the plasma arc is 4 mm to 6 mm, and the distance between the first electrode and the second electrode within the cavity is greater than the length of the plasma arc.

19. 2. The heater according to claim 1, wherein an end of the central tube connected to the first electrode is provided with a chamfered or rounded portion.

20. A heating atomization device comprising the heater according to any one of claims 1 to 19.

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