Atomization structure and electronic atomization device

Abstract

The utility model provides an atomization structure and an electronic atomization device.The atomization structure comprises a preheating cylinder, a liquid inlet channel, a liquid outlet pipe, a liquid inlet pipe, a liquid outlet pipe, a liquid outlet pipe, a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet pipe penetrates through the liquid inlet pipe in the axial direction of the preheating cylinder; the periphery of the preheating cylinder is sleeved with the liquid guide cylinder, and a communication path communicating the circumferential inner surface and the circumferential outer surface of the liquid guide cylinder is formed; the heating element is arranged on the periphery of the liquid guide cylinder, so that the atomizing medium is heated and atomized on the periphery of the liquid guide cylinder to form aerosol; the preheating cylinder can preheat the atomizing medium flowing into the liquid inlet channel, so that the viscosity of the atomizing medium is reduced, and the flow rate of the atomizing medium along the communicating path is increased. In this way, preheating of the atomizing medium is achieved, and the problem of core pasting caused by excessive heating of the atomizing medium due to poor liquidity of the atomizing medium in the liquid guide cylinder is solved; the liquid guide cylinder only locally preheats the atomization medium which is sucked instantly, so that the atomization medium stored in the liquid storage cavity can be prevented from being continuously and repeatedly heated, and the taste attenuation of the atomization medium is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of atomization, in particular to an atomization structure, and further relates to an electronic atomization device comprising the atomization structure. BACKGROUND

[0002] The viscosity of atomization media on the market is very wide, ranging from tens to hundreds of thousands of cp or mPa.s at room temperature; the viscosity of the atomization medium decreases with increasing temperature, and the lower the viscosity of the atomization medium, the stronger its fluidity.

[0003] Most of the atomization structures on the market for atomizing high-viscosity atomization media use porous ceramic atomization cores, which use a cylindrical ceramic provided with a heating element, the cylindrical ceramic is coated with cotton fibers, and then the three are integrally built into a steel pipe; as above, the heat of the heating element is transferred to the steel pipe, which preheats the high-viscosity atomization medium in the entire oil tank to enhance its fluidity and prevent the core from being pasted.

[0004] However, during use of the electronic atomization device, the above atomization structure always preheats the atomization medium in the oil tank as a whole, rather than only preheating the part of the atomization medium that is immediately being puffed, so it is easy to adversely affect the taste of the atomization medium. CONTENT OF THE INVENTION

[0005] Therefore, the purpose of the present application is to provide an atomization structure that prevents the core from being pasted while not adversely affecting the taste of the atomization medium.

[0006] Another purpose of the present application is to provide an electronic atomization device comprising the above atomization structure.

[0007] In order to achieve the above purpose, the present application provides the following technical solution:

[0008] An atomization structure comprising:

[0009] A preheating cylinder having a liquid inlet passage passing through in the axial direction thereof, a circumferential wall of the preheating cylinder being provided with a liquid outlet hole communicating with the liquid inlet passage;

[0010] A liquid guide cylinder being sleeved on the outer periphery of the preheating cylinder, the liquid guide cylinder being formed with a communication path communicating between the inner and outer circumferential surfaces thereof, the communication path communicating with the liquid outlet hole;

[0011] A heating element being arranged on the outer periphery of the liquid guide cylinder to heat and atomize the atomization medium on the outer periphery of the liquid guide cylinder to form an aerosol;

[0012] Wherein, the preheating cylinder can preheat the atomization medium flowing into the liquid inlet passage.

[0013] Optionally, in the atomization structure,

[0014] The preheating cylinder is a heat conduction member to receive heat from the heat generating member through conduction of the liquid guiding cylinder;

[0015] Or,

[0016] The preheating cylinder is a self-heating member.

[0017] Optionally, in the atomization structure, the flow area at both ends of the liquid inlet channel is greater than the flow area in the middle of the liquid inlet channel.

[0018] Optionally, in the atomization structure, the preheating cylinder includes a first section at both ends, a second section in the middle, and an intermediate section in the middle along the axial direction thereof;

[0019] The outer diameter of the first section and the outer diameter of the second section are both greater than the outer diameter of the intermediate section and are both greater than or equal to the outer diameter of the liquid guiding cylinder, and the liquid guiding cylinder is sleeved on the intermediate section and is limited between the first section and the second section.

[0020] Optionally, in the atomization structure, a first transition section with a gradually decreasing outer diameter is connected between the first section and the intermediate section; and a second transition section with a gradually decreasing outer diameter is connected between the second section and the intermediate section;

[0021] The liquid guiding cylinder is sleeved on the outer periphery of the first transition section, the intermediate section, and the second transition section, and the inner diameters of both ends of the liquid guiding cylinder are adapted to the outer diameters of the first transition section and the second transition section, respectively.

[0022] Optionally, in the atomization structure, an inner surface of the circumferential wall of the liquid guiding cylinder is formed with an extension extending in the radial direction thereof, the extension extending into the liquid outlet hole to fix the liquid guiding cylinder to the preheating cylinder.

[0023] Optionally, in the atomization structure,

[0024] The extension is flush with the inner surface of the circumferential wall of the preheating cylinder;

[0025] And / or,

[0026] The liquid guiding cylinder has a thin-walled region, and the wall thickness of the thin-walled region is 0.5-1.5 mm.

[0027] Optionally, in the atomization structure,

[0028] The thermal conductivity coefficient of the preheating cylinder is greater than the thermal conductivity coefficient of the liquid guiding cylinder;

[0029] And / or,

[0030] The thermal conductivity of the preheating cylinder is greater than 0.5 W / (m.k), or the thermal conductivity of the preheating cylinder is 10 W / (m.k)-500 W / (m.k);

[0031] and / or,

[0032] The preheating cylinder is a heat-conducting metal cylinder, or the preheating cylinder is a heat-conducting dense non-metal cylinder;

[0033] and / or,

[0034] The liquid outlet hole is arranged in the middle section of the preheating cylinder;

[0035] and / or,

[0036] The aperture of the liquid outlet hole is greater than or equal to 1 mm;

[0037] and / or,

[0038] The liquid outlet hole is arranged in the middle section of the preheating cylinder;

[0039] Optionally, in the above atomization structure, the liquid guide cylinder is a porous material cylinder, and the pores of the porous material cylinder form the communication path; wherein:

[0040] The porosity of the porous material cylinder is 10%-90%;

[0041] and / or,

[0042] The pore size of the porous material cylinder is 5-50 μm;

[0043] and / or,

[0044] The porous material cylinder is a porous ceramic cylinder or a porous glass cylinder.

[0045] Optionally, in the above atomization structure,

[0046] The heating element is wholly externally arranged on the outer periphery of the liquid guide cylinder, or the heating element is partially embedded in the outer periphery of the liquid guide cylinder;

[0047] and / or,

[0048] The heating element is a spiral resistance heating wire wound on the outer periphery of the liquid guide cylinder, or the heating element is a heating film, a heating coating or a heating sheet wrapped on at least part of the outer periphery of the liquid guide cylinder;

[0049] and / or,

[0050] The preheating cylinder, the liquid guide cylinder and the heating element are a sintered integrated structure.

[0051] An electronic atomization device comprises a housing and an atomization structure as described above; the housing is provided with a gas flow channel and a liquid storage cavity, and the atomization structure is arranged in the gas flow channel;

[0052] The liquid inlet of the liquid inlet passage of the atomization structure is communicated with the liquid storage cavity, and the extension direction of the liquid inlet passage intersects with the extension direction of the gas flow channel.

[0053] Optionally, in the electronic atomization device, the heating element of the atomization structure is wrapped around the part of the liquid guide cylinder, and the heating element is located on the side of the liquid guide cylinder close to the gas inlet of the gas flow channel.

[0054] In the atomization structure and the electronic atomization device of the present application, the preheating cylinder is sleeved in the inside of the liquid guide cylinder, and the preheating cylinder has a relatively high temperature; the atomized medium sucked at the moment flows into the liquid inlet passage, and exchanges heat with the preheating cylinder with high temperature in the liquid inlet passage, so as to preliminarily raise the temperature of the atomized medium and complete preheating; the atomized medium after preheating has reduced viscosity and enhanced flowability, so as to quickly flow to the outer surface of the liquid guide cylinder through the communication path, and is atomized to form aerosol under the heating of the heating element. As described above, the preheating of the atomized medium is realized, and the problem of burnt core caused by excessive heating of the atomized medium due to poor flowability in the liquid guide cylinder is prevented; at the same time, the liquid guide cylinder only locally preheats the atomized medium sucked at the moment, and the heat generated by the atomization structure will not spread to the liquid storage cavity of the atomization device, so as to avoid repeatedly heating the atomized medium remaining in the liquid storage cavity, and further avoid the adverse effect on the taste of the atomized medium and the attenuation of the taste of the atomized medium. BRIEF DESCRIPTION OF DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0056] Figure 1 It is a side view of the atomization structure of Embodiment 1 of the present application;

[0057] Figure 2 It is a front view of the atomization structure of Embodiment 1 of the present application;

[0058] Figure 3 It is a front view of the atomization structure of Embodiment 1 of the present application; Figure 1 It is a A-A sectional view of

[0059] Figure 4 It is a perspective view of the preheating cylinder of Embodiment 1 of the present application;

[0060] Figure 5This is a side view of the preheating cylinder of Embodiment 1 of this application;

[0061] Figure 6 This is a front view of the preheating cylinder of Embodiment 1 of this application;

[0062] Figure 7 This is a perspective view of the preheating cylinder of Embodiment 2 of this application;

[0063] Figure 8 This is a front view of the preheating cylinder of Embodiment 2 of this application;

[0064] Figure 9 This is a side view of the atomization structure of Embodiment 3 of this application;

[0065] Figure 10 This is a front view of the atomization structure of Embodiment 3 of this application;

[0066] Figure 11 for Figure 9 BB section view;

[0067] Figure 12 This is a perspective view of the atomization structure of Embodiment 4 of this application;

[0068] Figure 13 This is a front view of the atomization structure of Embodiment 4 of this application;

[0069] Figure 14 This is a front view of the atomization structure of Embodiment 5 of this application;

[0070] Figure 15 This is a cross-sectional view of the atomization structure of Embodiment 5 of this application;

[0071] Figure 16 This is a cross-sectional view of an electronic atomizing device according to an embodiment of this application;

[0072] Figure 17 for Figure 16 A magnified view of a portion of C.

[0073] superior Figures 1-17 middle:

[0074] 1. Preheating cylinder; 2. Liquid guiding cylinder; 3. Heating element; 4. Atomizing structure; 5. Liquid storage chamber; 6. Gas flow channel;

[0075] 11. Liquid inlet channel; 12. Liquid inlet; 13. Liquid outlet; 14. First section; 15. Second section; 16. Intermediate section; 17. First transition section; 18. Second transition section;

[0076] 21. Extension section;

[0077] 61. Air intake. Detailed Implementation

[0078] The application provides an atomization structure and an electronic atomization device.

[0079] The technical solutions in the embodiments of the application will be apparently and completely described in the embodiments of the application combined with the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all the other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the application.

[0080] As shown in the drawings, Figures 1-15 The application provides an atomization structure, which comprises a preheating cylinder 1, a liquid guiding cylinder 2 and a heating element 3. The preheating cylinder 1 has a liquid inlet channel 11 penetrating through the axial direction thereof, and the circumferential wall of the preheating cylinder 1 is provided with a liquid outlet hole 13 communicating with the liquid inlet channel 11. The liquid guiding cylinder 2 is sleeved on the outer periphery of the preheating cylinder 1, and the liquid guiding cylinder 2 is formed with a communication path communicating between the inner and outer circumferential surfaces thereof, and the communication path communicates with the liquid outlet hole 13. The heating element 3 is arranged on the outer periphery of the liquid guiding cylinder 2, so that the atomization medium is heated and atomized to form aerosol on the outer periphery of the liquid guiding cylinder 2. The preheating cylinder 1 can preheat the atomization medium flowing into the liquid inlet channel 11, so as to reduce the viscosity of the atomization medium and increase the flow rate of the atomization medium along the communication path.

[0081] It should be noted that the external shape and the internal shape of the preheating cylinder 1 are not specifically limited, as long as a hollow space penetrating through the inside of the preheating cylinder 1 is formed, and the hollow space forms the liquid inlet channel 11. As an example, the preheating cylinder 1 is a hollow cylinder, and the preheating cylinder 1 can be a variable-diameter hollow cylinder or a constant-diameter hollow cylinder. Along the axial direction of the liquid inlet channel 11, the two ends of the liquid inlet channel 11 are open as liquid inlet ports 12. The axis of the preheating cylinder 1 coincides with the axial direction of the liquid inlet channel 11; both ends of the preheating cylinder 1 appearing in the description are the two ends of the preheating cylinder 1 along the axial direction thereof; both ends of the liquid inlet channel 11 appearing in the description are the two ends of the liquid inlet channel 11 along the axial direction thereof.

[0082] The external shape and the internal shape of the liquid guiding cylinder 2 are not specifically limited, as long as a hollow accommodating space penetrating through the inside of the liquid guiding cylinder 2 is formed, and the hollow accommodating space accommodates the preheating cylinder 1; the internal shape of the liquid guiding cylinder 2 matches the external shape of the preheating cylinder 1. The axial direction of the liquid guiding cylinder 2 is parallel to the axial direction of the preheating cylinder 1; both ends of the liquid guiding cylinder 2 appearing in the description are the two ends of the liquid guiding cylinder 2 along the axial direction thereof.

[0083] The preheating cylinder 1 only comprises a circumferential wall surrounding the liquid inlet channel 11, so the inner surface and the outer surface of the circumferential wall of the preheating cylinder 1 are the inner surface and the outer surface of the preheating cylinder 1, and the outer periphery of the preheating cylinder 1 is the outer surface of the preheating cylinder 1. The liquid guide cylinder 2 only comprises a circumferential wall, so the inner surface and the outer surface of the circumferential wall of the liquid guide cylinder 2 are the inner surface and the outer surface of the liquid guide cylinder 2, and the outer periphery of the liquid guide cylinder 2 is the outer surface of the liquid guide cylinder 2.

[0084] The communication path of the liquid guide cylinder 2 penetrates the inner surface and the outer surface of the liquid guide cylinder 2; the inner surface of the liquid guide cylinder 2 is a liquid suction surface, and the outer surface of the liquid guide cylinder 2 (the outer surface of the liquid guide cylinder 2 is the outer periphery of the liquid guide cylinder 2) is an atomization surface.

[0085] It should be further noted that the atomization structure 4 of the present application is used in an electronic atomization device, and the atomization medium is stored in a liquid storage cavity 5 of the electronic atomization device. The atomization medium in the liquid storage cavity 5 flows into the liquid inlet channel 11 through the liquid inlet 12. When the electronic atomization device is an electronic cigarette, the atomization medium is tobacco tar.

[0086] The preheating cylinder 1 is sleeved in the interior of the liquid guide cylinder 2, and the preheating cylinder 1 has a relatively high temperature. The atomization medium that is just being sucked flows into the liquid inlet channel 11 through the liquid inlet 12 and exchanges heat with the high-temperature preheating cylinder 1 in the liquid inlet channel 11, so as to preliminarily raise the temperature of the atomization medium and complete preheating. The preheated atomization medium has a reduced viscosity and an enhanced flowability, so as to quickly flow to the outer surface of the liquid guide cylinder 2 through the communication path and be heated by the heating element 3 to form an aerosol by atomization. As described above, the preheating of the atomization medium is realized, and the problem of a burnt core caused by excessive heating of the atomization medium due to poor flowability in the liquid guide cylinder 2 is prevented. At the same time, the liquid guide cylinder 2 only locally preheats the atomization medium that is just being sucked, and the heat generated by the atomization structure 4 will not spread to the liquid storage cavity 5 of the atomization device, so as to avoid repeated heating of the atomization medium stored in the liquid storage cavity 5, and further avoid the adverse effect on the taste of the atomization medium and the attenuation of the taste of the atomization medium.

[0087] Further, the atomization medium flowing into the liquid inlet channel 11 cannot directly flow to the liquid guide cylinder 2 along the radial direction of the preheating cylinder 1 under the constraint of the circumferential wall of the preheating cylinder 1 which is not provided with the liquid outlet hole 13, but will move a distance along the axial direction of the preheating cylinder 1 to the liquid outlet hole 13, and then flow to the outer periphery of the liquid guide cylinder 2 through the liquid outlet hole 13. As described above, the flow trajectory of the atomization medium along the axial direction of the preheating cylinder 1 before flowing into the preheating cylinder 1 is relatively lengthened, so as to relatively increase the heat exchange time between the preheating cylinder 1 and the atomization medium and ensure the sufficient preheating effect of the atomization medium.

[0088] Further, the heating element 3 is located at the outer periphery of the atomization structure 4, which is beneficial to temperature measurement and quality detection.

[0089] In some embodiments of the present application, the liquid guide cylinder 2 can conduct heat to transfer the heat generated by the heating element 3 to the preheating cylinder 1. The preheating cylinder 1 is a heat conducting element, which can receive the heat from the heating element 3 conducted through the liquid guide cylinder 2, and the preheating cylinder 1 is heated to a high temperature, and the high-temperature preheating cylinder 1 exchanges heat with the atomization medium flowing into the liquid inlet channel 11 to preliminarily raise the temperature of the atomization medium to complete preheating.

[0090] It should be noted that the heating element 3 and the preheating cylinder 1 are completely separated by the liquid guide cylinder 2 and are electrically insulated from each other.

[0091] As described above, the heat of the preheating cylinder 1 comes from the heating element 3, which effectively utilizes the heat of the heating element 3 and realizes comprehensive utilization of energy. One heating power supply can realize the heating of two components, and the preheating cylinder 1 does not need to be configured with a heating power supply, thereby saving the wiring line for electrical connection and achieving simple and neat structure.

[0092] In some parallel embodiments, the preheating cylinder 1 is a self-heating element to preheat the atomization medium flowing into the liquid inlet channel 11. It should be noted that the self-heating element refers to a structure that is externally connected to a heating power supply and is powered to generate heat through the connected heating power supply. The preheating cylinder 1 can be selected from a heating tube and the like.

[0093] As described above, the temperature of the preheating cylinder 1 is no longer dependent on the heating element 3, and the temperature of the preheating cylinder 1 can be flexibly and conveniently automatically adjusted to accurately control the preheating temperature of the atomization medium.

[0094] Please refer to the accompanying drawings Figures 3-4 In some embodiments of the present application, the flow area of the liquid inlet channel 11 at both ends is greater than the flow area of the liquid inlet channel 11 in the middle.

[0095] It should be noted that the inner diameter of the liquid inlet channel 11 at both ends is enlarged, so that the inner diameter of the liquid inlet channel 11 at both ends is greater than the inner diameter of the liquid inlet channel 11 in the middle, thereby ensuring that the flow area of the liquid inlet channel 11 at both ends is greater than the flow area of the liquid inlet channel 11 in the middle.

[0096] When the atomization medium in the liquid storage cavity 5 continuously enters the atomization structure and is gradually consumed, the pressure in the liquid storage cavity 5 becomes smaller, and under the action of the pressure difference, the air in the gas flow channel 6 of the electronic atomization device enters the liquid inlet channel 11 through the communication path of the liquid guide cylinder 2 and forms air bubbles; the air bubbles will float upward due to the surface tension adhering to the inner wall of the liquid inlet channel 11 and moving in the direction of the liquid storage cavity 5 under the action of the pressure difference; because the inner diameter of the liquid inlet channel 11 at both ends is large, the air bubbles will accelerate to exit the liquid inlet channel 11 from both ends of the liquid inlet channel 11 and enter the liquid storage cavity 5, thereby avoiding the air bubbles from blocking the liquid inlet channel 11 and ensuring the smooth and rapid liquid supply effect of the atomization medium from the liquid storage cavity 5 to the liquid inlet channel 11.

[0097] Please refer to the attached Figure 3 In some embodiments of the present application, the preheating cylinder 1 comprises a first section 14, a second section 15 and an intermediate section 16 along the axial direction. The outer diameter of the first section 14 and the outer diameter of the second section 15 are both greater than the outer diameter of the intermediate section 16 and are both greater than or equal to the outer diameter of the liquid guide cylinder 2. The liquid guide cylinder 2 is sleeved on the intermediate section 16 and is limited between the first section 14 and the second section 15.

[0098] As described above, the first section 14 and the second section 15 with larger outer diameters form a limiting barrier for limiting the liquid guide cylinder 2, and the liquid guide cylinder 2 is limited between the first section 14 and the second section 15, avoiding the dislocation movement of the liquid guide cylinder 2 along the axial direction relative to the preheating cylinder 1, thereby ensuring the reliable limiting and fixing effect of the liquid guide cylinder 2 on the preheating cylinder 1.

[0099] Please refer to the attached Figure 3 , 4 ,6In some embodiments of the present application, a first transition section 17 with gradually decreasing outer diameter is connected between the first section 14 and the intermediate section 16; and a second transition section 18 with gradually decreasing outer diameter is connected between the second section 15 and the intermediate section 16.

[0100] As described above, the radial size is smoothly changed from the first section 14 to the intermediate section 16 through the first transition section 17, and the radial size is smoothly changed from the second section 15 to the intermediate section 16 through the second transition section 18, which on the one hand avoids the stress concentration caused by the sudden change of the radial size, thereby avoiding the local fracture caused by the stress concentration and ensuring the structural strength of the preheating cylinder 1; and on the other hand ensures the smooth flow effect of the atomized medium in the preheating cylinder 1.

[0101] Please refer to the attached Figure 3 Further, the liquid guide cylinder 2 is sleeved on the outer periphery of the first transition section 17, the intermediate section 16 and the second transition section 18, and the inner diameters of the two ends of the liquid guide cylinder 2 are respectively adapted to the outer diameter of the first transition section 17 and the outer diameter of the second transition section 18.

[0102] As described above, the inner diameter of the liquid guide cylinder 2 gradually decreases from the two ends to the middle of the liquid guide cylinder 2. Since the outer diameter of the liquid guide cylinder 2 is equal everywhere, the wall thickness of the liquid guide cylinder 2 gradually increases from the two ends to the middle of the liquid guide cylinder 2. Optionally, the wall thickness of the liquid guide cylinder 2 gradually increases in a stepped manner from the two ends to the middle of the liquid guide cylinder 2.

[0103] The inner diameter of the liquid guide cylinder 2 is adapted to the outer diameter of the first transition section 17 and the outer diameter of the second transition section 18 of the preheating cylinder 1, realizing the close setting of the liquid guide cylinder 2 on the outer periphery of the preheating cylinder 1 and ensuring the reliability of the assembly and fixation of the liquid guide cylinder 2 and the preheating cylinder 1.

[0104] Further, the outer diameter of the first section 14 is equal to the outer diameter of the second section 15; the outer diameter of the liquid guide cylinder 2 is equal everywhere and is equal to the outer diameter of the first section 14. As above, it is ensured that the outer diameter of the combination of the sleeve jointly arranged preheating cylinder 1 and the liquid guide cylinder 2 is equal everywhere, there is no section with sudden change of the outer diameter, there is no stress concentration area, and the outer surface is smooth and fluent.

[0105] Still further, the wall thickness of the preheating cylinder 1 is equal everywhere. The "equal" appearing above includes complete equality or there is a certain error within the allowable range.

[0106] Please refer to the accompanying drawings Figure 11 In some embodiments of the present application, the inner surface of the circumferential wall of the liquid guide cylinder 2 is formed with an extension 21 extending radially therefrom, the extension 21 extending into the liquid outlet hole 13 so as to fix the liquid guide cylinder 2 to the preheating cylinder 1.

[0107] The dashed line in the accompanying drawings Figure 11 is not a structural line of the preheating cylinder 1, but is an auxiliary line to define the edge profile of the liquid outlet hole 13. The extension 21 of the liquid guide cylinder 2 is a limiting insertion structure matched with the liquid outlet hole 13 of the preheating cylinder 1, the extension 21 extending into the liquid outlet hole 13, avoiding the axial misplacement of the liquid guide cylinder 2 relative to the preheating cylinder 1, and further ensuring the reliable limiting and fixing effect of the liquid guide cylinder 2 on the preheating cylinder 1.

[0108] Please refer to the accompanying drawings Figure 11 In some embodiments of the present application, the extension 21 is flush with the inner surface of the circumferential wall of the preheating cylinder 1.

[0109] As above, the maximum size of the extension 21 extending into the liquid outlet hole 13 is limited without blocking the liquid inlet channel 11, and the reliable limiting and fixing effect of the liquid guide cylinder 2 on the preheating cylinder 1 is maximized.

[0110] In some parallel embodiments, the extension 21 can be located between the inner surface and the outer surface of the circumferential wall of the preheating cylinder 1; the extension 21 can also extend out of the inner surface of the circumferential wall of the preheating cylinder 1 and into the liquid inlet channel 11.

[0111] In some embodiments, the liquid guide cylinder 2 has a thin-walled area, and the wall thickness of the thin-walled area is 0.5mm-1.5mm; for example, the thickness of the thin-walled area is any one of 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm, etc.

[0112] It should be noted that the liquid guide cylinder 2 includes a liquid guide cylinder intermediate section opposite the intermediate section 16 of the preheating cylinder 1, and the area of the liquid guide cylinder intermediate section except the area formed with the extension 21 is a thin-walled area. As above, the wall thickness of the liquid guide cylinder 2 is limited, and the liquid guide cylinder 2 has sufficient structural strength under the premise of avoiding excessive size of the outer diameter of the liquid guide cylinder 2.

[0113] In some embodiments of the present application, the thermal conductivity of the preheating cylinder 1 is greater than that of the liquid guiding cylinder 2. Preferably, the preheating cylinder 1 is a high thermal conductivity member, and the thermal conductivity of the preheating cylinder 1 is greater than that of the liquid guiding cylinder 2.

[0114] As described above, the preheating cylinder 1 with high thermal conductivity can quickly receive heat from the heat generating member 3, and quickly increase the temperature of the preheating cylinder 1 to a high temperature. The temperature of the preheating cylinder 1 is significantly higher than that of the liquid guiding cylinder 2, and the heat is quickly conducted to the atomizing medium flowing into the liquid inlet channel 11, thereby ensuring good and sufficient preheating effect of the atomizing medium.

[0115] In some embodiments, the thermal conductivity of the preheating cylinder 1 is greater than 0.5 W / (m.k).

[0116] Further, the thermal conductivity of the preheating cylinder 1 is at least 0.5 W / (m.k)-1 W / (m.k); for example, the thermal conductivity of the preheating cylinder 1 is at least any one of 0.5 W / (m.k), 0.6 W / (m.k), 0.7 W / (m.k), 0.8 W / (m.k), 0.9 W / (m.k), 1 W / (m.k), etc.

[0117] Still further, the thermal conductivity of the preheating cylinder 1 is 10 W / (m.k)-500 W / (m.k); for example, the thermal conductivity of the preheating cylinder 1 is any one of 10 W / (m.k), 50 W / (m.k), 100 W / (m.k), 200 W / (m.k), 300 W / (m.k), 400 W / (m.k), 500 W / (m.k), etc.

[0118] As described above, the high thermal conductivity of the preheating cylinder 1 can ensure that the preheating cylinder 1 can sufficiently receive heat from the heat generating member 3 to maintain a high temperature state, and conduct sufficient heat to the atomizing medium to complete sufficient preheating of the atomizing medium, reduce the viscosity of the atomizing medium, and increase the flow rate of the atomizing medium in the liquid guiding cylinder 2.

[0119] In some embodiments, the preheating cylinder 1 is a thermal conducting metal cylinder made of thermal conducting metal, or the preheating cylinder 1 is a thermal conducting dense non-metal cylinder made of thermal conducting dense non-metal.

[0120] It should be noted that the thermal conducting metal can be selected from copper, aluminum, silver, nickel, titanium or alloy, etc.; the alloy can be selected from nickel-chromium alloy, iron-chromium alloy, stainless steel, etc. Optionally, the thermal conducting dense non-metal can be selected from glass, dense ceramic, etc.

[0121] As described above, the preheating cylinder 1 is convenient and fast to process and form, effectively enriches the types of the preheating cylinder 1, and can select a specific type of preheating cylinder 1 according to actual needs, thereby having strong flexibility and applicability.

[0122] Please refer to the drawingsFigure 3 、 4 , 6, in some embodiments, the liquid outlet hole 13 is arranged in the middle section 16 of the preheating cylinder 1.

[0123] As described above, the length of the flow path of the atomized medium flowing into the liquid inlet channel 11 from the liquid inlet 12 at both ends is ensured to be the same or substantially the same before entering the liquid guide cylinder 2, thereby ensuring that the preheating time and preheating effect of the atomized medium flowing from the liquid inlet 12 at both ends are the same or substantially the same in the preheating cylinder 1, thereby ensuring uniform preheating effect on the atomized medium.

[0124] In some embodiments, the diameter of the liquid outlet hole 13 is ≥1mm. As described above, it can be ensured that the atomized medium flowing into the liquid inlet channel 11 can smoothly flow to the communication path of the liquid guide cylinder 2 through the liquid outlet hole 13.

[0125] In some embodiments, the liquid outlet hole 13 is arranged in multiple, and the cross-sectional shape of the liquid outlet hole 13 includes at least one of a circular shape, a rectangular shape, and a waist shape. The shape of the liquid outlet hole 13 can be selected according to actual needs, and has strong flexibility and applicability.

[0126] It should be noted that in addition to regular shapes, the cross-sectional shape of the liquid outlet hole 13 can also be any irregular shape, as long as it can ensure that the liquid outlet hole 13 penetrates along the wall thickness direction of the circumferential wall of the preheating cylinder 1.

[0127] Embodiment 1 (see attached Figures 1-6 )

[0128] The preheating cylinder 1 is a heat-conducting metal cylinder; the material of the heat-conducting metal cylinder is stainless steel. Along the circumference of the preheating cylinder 1, the liquid outlet hole 13 is provided with 4, and the cross-sectional shape of the liquid outlet hole is a waist shape.

[0129] Embodiment 2 (see attached Figures 7-8 )

[0130] Along the circumference of the preheating cylinder 1, the liquid outlet hole 13 is provided with 4 groups; along the axial direction of the preheating cylinder 1, the number of liquid outlet holes 13 in each group is 3, and the cross-sectional shape of the liquid outlet hole 13 is a circular shape.

[0131] Embodiment 3 (see attached Figures 9-11 )

[0132] The preheating cylinder 1 is a heat-conducting metal cylinder, which is a heat-conducting dense non-metal cylinder; the material of the heat-conducting dense non-metal cylinder is dense ceramic; the dense ceramic is composed of multiple sections of variable diameter structure, which presents the trend of small inner diameter in the middle and large inner diameter at both ends.

[0133] In some embodiments of the present application, the liquid guide 2 is a porous material cylinder made of a porous material, and the pores of the porous material cylinder form a communication path connecting the inner surface and the outer surface of the circumferential wall of the liquid guide 2; the atomized medium entering the inner surface of the circumferential wall of the liquid guide 2 flows to the outer surface of the circumferential wall of the liquid guide 2 through the communication path.

[0134] The porosity of the porous material cylinder is 10%-90%; for example, the porosity of the porous material cylinder is any one of 10%, 30%, 50%, 70%, 90%, etc.

[0135] Further, the pore size of the porous material cylinder is 5 μm-50 μm; for example, the pore size of the porous material cylinder is any one of 5 μm, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, etc.

[0136] As described above, the formation of the communication path can be constrained, and the wicking effect of the liquid guide 2 on the atomized medium is ensured, so that the atomized medium can smoothly flow from the inner surface of the circumferential wall of the liquid guide 2 to the outer surface of the circumferential wall of the liquid guide 2.

[0137] In some embodiments, the liquid guide 2 is a porous ceramic cylinder made of porous ceramic, or a porous glass cylinder made of porous glass.

[0138] Both the porous ceramic and the porous glass are porous materials, which are easy to obtain and low in cost, and the porosity and pore size thereof are easy to control, so that the porous ceramic cylinder or the porous glass cylinder meeting the use requirements can be conveniently and quickly obtained. The type of the liquid guide 2 is various, and the porous ceramic cylinder or the porous glass cylinder can be selected and used according to actual requirements, so that the flexibility and applicability are high.

[0139] In some embodiments of the present application, the heating element 3 is entirely arranged outside the outer periphery of the liquid guide 2.

[0140] As described above, the heating element 3 is located at the outer periphery of the liquid guide 2, so that the installation and arrangement of the heating element 3 are facilitated.

[0141] In some parallel embodiments, the heating element 3 is partially embedded in the outer periphery of the liquid guide 2. It should be noted that, in the thickness direction of the wall of the liquid guide 2, the heating element 3 is partially embedded in the outer periphery of the liquid guide 2.

[0142] As described above, the secure fixing effect of the heating element 3 on the liquid guide 2 can be ensured, and the heating element 3 will not be disconnected from the liquid guide 2 during use, so that the reliable use of the atomization structure is increased.

[0143] In some embodiments of the present application, the heating element 3 is a spiral resistance heating wire wound around the outer periphery of the liquid guide 2. The material of the spiral resistance heating wire is one of high-resistivity materials such as nickel-chromium, iron-chromium-aluminum or stainless steel.

[0144] Please refer to the drawingsFigures 7-8 In some parallel embodiments, the heating element 3 is a heating film or a heating coating or a heating sheet wrapped around the outer periphery of the liquid guide cylinder 2.

[0145] In some embodiments, the heating element is wrapped around the entire outer periphery of the liquid guide cylinder 2. In some parallel embodiments, the heating element is wrapped around part of the arc surface of the outer periphery of the liquid guide cylinder 2.

[0146] As described above, the structure type and arrangement form of the heating element 3 can be selected according to actual needs, and the flexible applicability is strong.

[0147] Embodiment 1 (see attached Figures 1-6 )

[0148] The heating element 3 is partially embedded in the outer periphery of the liquid guide cylinder 2, and the heating element 3 is a spiral resistance heating wire.

[0149] Embodiment 4 (see attached Figures 12-13 )

[0150] The heating element 3 is a heating film, and the heating film is wrapped around the entire outer periphery of the liquid guide cylinder 2.

[0151] Embodiment 5 (see attached Figures 14-15 )

[0152] The heating element 3 is a heating film, and the heating film is wrapped around part of the arc surface of the outer periphery of the liquid guide cylinder 2.

[0153] In some embodiments of the present application, the preheating cylinder 1, the liquid guide cylinder 2, and the heating element 3 are a sintered integrated structure.

[0154] It should be noted that the liquid guide cylinder 2 is taken as a porous ceramic cylinder for introduction; the preheating cylinder 1 and the heating element 3 are placed in the appropriate position of the sintering film tool; the ceramic material powder is filled into the sintering tool, and pressure is applied to make it into shape; pre-sintering is carried out at a lower temperature, and finally the sintered integrated structure of the liquid guide cylinder 2, the preheating cylinder 1, and the heating element 3 is obtained.

[0155] As described above, the preheating cylinder 1, the liquid guide cylinder 2, and the heating element 3 can be firmly and integrally connected, and they will not be separated from each other during use, which ensures the reliable use of the atomization structure; further, the above-mentioned sintered integrated atomization structure eliminates the components such as cotton fibers and external steel pipes, eliminates the complex assembly process, reduces the assembly cost, and reliably ensures the consistency of product performance.

[0156] Please refer to the attached Figures 16-17In summary, the application further provides an electronic atomization device, which comprises a shell and the atomization structure 4 as described above. The shell is provided with a gas flow channel 6 and a liquid storage cavity 5; the atomization structure 4 is arranged in the gas flow channel 6; the liquid inlet 12 of the liquid inlet channel 11 of the atomization structure 4 is communicated with the liquid storage cavity 5, and the extension direction of the liquid inlet channel 11 intersects with the extension direction of the gas flow channel 6.

[0157] Optionally, the extension direction of the gas flow channel 6 is a vertical direction, and the extension direction of the liquid inlet channel 11 is a horizontal direction, i.e., the extension direction of the gas flow channel 6 is perpendicular to the extension direction of the liquid inlet channel 11; as described above, the atomization structure 4 is arranged horizontally in the shell.

[0158] The liquid inlets 12 at both ends of the liquid inlet channel 11 are communicated with the liquid storage cavity 5, which realizes the effect of liquid inlet from both ends of the liquid inlet channel 11 at the same time, and guarantees the smooth and rapid liquid supply effect of the atomization medium in the atomization structure 4.

[0159] Since the electronic atomization device of the application comprises the atomization structure 4 as described above, the beneficial effects of the electronic atomization device brought by the atomization structure 4 are described above, and will not be described here.

[0160] In some embodiments of the application, the heating element 3 of the atomization structure 4 is wrapped around part of the outer periphery of the liquid guide cylinder 2. The heating element 3 is located at the side of the liquid guide cylinder 2 close to the gas inlet 61 of the gas flow channel 6.

[0161] It should be noted that the gas inlet 61 is located below the atomization structure 4. The heating element 3 is located on the arc surface of the liquid guide cylinder 2 close to the gas inlet 61.

[0162] The atomization medium is heated by the heating element 3 to form steam, and at the same time, contacts with the air in the gas flow channel 6 to form an aerosol, and is finally inhaled by the human body. By arranging the heating element 3 at the side of the liquid guide cylinder 2 close to the gas inlet 61, the atomization medium heated to form steam can be fully contacted with the air, and the aerosol can be reliably formed.

[0163] The basic principles of the application are described above in combination with specific embodiments, but it should be pointed out that the advantages, advantages, effects and the like mentioned in the application are only examples and not limitations, and these advantages, advantages, effects and the like cannot be considered as the must-have of each embodiment of the application. In addition, the above specific details are only for the purpose of example and understanding, and are not limited to the application which must be realized by the above specific details.

[0164] The block diagrams of the devices, apparatuses, equipment, systems involved in the present application are only illustrative examples and are not intended to require or imply that the connection, arrangement, configuration must be as shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, systems can be connected, arranged, configured in any manner. Words such as "include", "contain", "have", and the like are open-ended words, mean "including but not limited to", and can be used interchangeably. The words "or" and "and" used herein mean the word "and / or", and can be used interchangeably, unless the context clearly indicates otherwise. The word "such as" used herein means the phrase "such as but not limited to", and can be used interchangeably.

[0165] It should also be noted that in the devices, apparatuses and methods of the present application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the present application.

[0166] The above 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 generic principles defined herein can 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.

[0167] It should be understood that the adjectives "first", "second", "third", "fourth", "fifth" and "sixth" used in the embodiments of the present application are only used for more clearly describing the technical solutions, and cannot be used to limit the protection scope of the present application.

[0168] The above description has been given for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. An atomizing structure, characterized by, The structure comprises: a preheating cylinder (1) having a liquid inlet channel (11) extending through the cylinder along an axial direction, a circumferential wall of the preheating cylinder (1) being provided with liquid outlet holes (13) communicating with the liquid inlet channel (11); a liquid guide cylinder (2) sleeved on an outer periphery of the preheating cylinder (1), the liquid guide cylinder (2) being formed with a communication path communicating between an inner surface and an outer surface of the liquid guide cylinder (2), the communication path communicating with the liquid outlet holes (13); and a heating element (3) arranged on an outer periphery of the liquid guide cylinder (2) to heat and atomize a medium into aerosol on the outer periphery of the liquid guide cylinder (2). The preheating cylinder (1) is capable of preheating the medium flowing into the liquid inlet channel (11).

2. The atomization structure according to claim 1, wherein the preheating cylinder (1) is a heat conduction element to receive heat from the heating element (3) through conduction of the liquid guide cylinder (2); or the preheating cylinder (1) is a self-heating element. The liquid inlet channel (11) has a larger flow area at both ends than a flow area in a middle portion of the liquid inlet channel (11).

3. The atomizing structure of claim 1, wherein The preheating cylinder (1) includes a first section (14) and a second section (15) at both ends and a middle section (16) in a middle portion along an axial direction of the preheating cylinder (1).

4. The atomizing structure of claim 1, wherein The preheating cylinder (1) includes a first section (14) and a second section (15) at both ends and a middle section (16) in a middle portion along an axial direction of the preheating cylinder (1). The first section (14) and the second section (15) each have an outer diameter larger than an outer diameter of the middle section (16) and larger than or equal to an outer diameter of the liquid guide cylinder (2), the liquid guide cylinder (2) being sleeved on the middle section (16) and limited between the first section (14) and the second section (15).

5. The atomizing structure of claim 4, wherein The first section (14) and the middle section (16) are connected by a first transition section (17) having a gradually decreasing outer diameter, and the second section (15) and the middle section (16) are connected by a second transition section (18) having a gradually decreasing outer diameter. The liquid guide cylinder (2) is sleeved on an outer periphery of the first transition section (17), the middle section (16) and the second transition section (18), and inner diameters of both ends of the liquid guide cylinder (2) are adapted to an outer diameter of the first transition section (17) and an outer diameter of the second transition section (18), respectively.

6. The atomizing structure of claim 1, wherein An inner surface of a circumferential wall of the liquid guide cylinder (2) is formed with an extension (21) extending in a radial direction of the liquid guide cylinder (2) into the liquid outlet holes (13) to fix the liquid guide cylinder (2) to the preheating cylinder (1).

7. The atomization structure according to claim 6, wherein the extension (21) is flush with an inner surface of a circumferential wall of the preheating cylinder (1); and / or the liquid guide cylinder (2) has a thin-walled region with a wall thickness of 0.5 mm to 1.5 mm.

8. The atomization structure according to any one of claims 1 to 7, wherein a thermal conductivity of the preheating cylinder (1) is greater than a thermal conductivity of the liquid guide cylinder (2); and / or the thermal conductivity of the preheating cylinder (1) is greater than 0.5 W / (m.k), or the thermal conductivity of the preheating cylinder (1) is 10 W / (m.k) to 500 W / (m.k); and / or ​ ​ ​ The preheating cylinder (1) is a heat-conducting metal cylinder, or the preheating cylinder (1) is a heat-conducting dense non-metal cylinder. And / or, The liquid outlet hole (13) is arranged in the middle section (16) of the preheating cylinder (1). And / or, The diameter of the liquid outlet hole (13) is greater than or equal to 1 mm. And / or, The liquid outlet hole (13) is arranged in the middle section (16) of the preheating cylinder (1).

9. The atomizing structure according to any one of claims 1-7, wherein, The liquid guide cylinder (2) is a porous material cylinder, and the pores of the porous material cylinder form the communication path. The porosity of the porous material cylinder is 10%-90%. And / or, The pore diameter of the porous material cylinder is 5-50 μm. And / or, The porous material cylinder is a porous ceramic cylinder or a porous glass cylinder.

10. The atomization structure according to any one of claims 1-7, wherein, The heating element (3) is wholly arranged outside the outer periphery of the liquid guide cylinder (2), or the heating element (3) is partially embedded in the outer periphery of the liquid guide cylinder (2). And / or, The heating element (3) is a spiral resistance heating wire wound around the outer periphery of the liquid guide cylinder (2), or the heating element (3) is a heating film, a heating coating or a heating sheet wrapped around at least part of the outer periphery of the liquid guide cylinder (2). And / or, The preheating cylinder (1), the liquid guide cylinder (2) and the heating element (3) are a sintered integrated structure.

11. An electronic atomizing device, characterized by, The atomization structure according to any one of claims 1-10 is arranged in the gas flow channel (6). The liquid inlet (12) of the liquid inlet channel (11) of the atomization structure is communicated with the liquid storage cavity (5), and the extension direction of the liquid inlet channel (11) is crossed with the extension direction of the gas flow channel (6).

12. The electronic atomizing device of claim 11, wherein, The heating element (3) of the atomization structure is wrapped around part of the outer periphery of the liquid guide cylinder (2), and the heating element (3) is located on the side of the liquid guide cylinder (2) close to the gas inlet (61) of the gas flow channel (6).

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