Electronic atomization device

Abstract

The present application relates to an electronic atomization device, comprising: a shell, the shell is provided with an atomization cavity, and an atomization core is arranged in the atomization cavity and detachably connected with the shell, the atomization core is used for buffering liquid and can absorb microwaves in the atomization cavity to generate heat, the atomization core is provided with a gas guide hole penetrating through the atomization core along the thickness direction and communicating with the atomization cavity. The atomization core absorbs microwaves in the atomization cavity to generate heat, so that the heat distribution of each region of the atomization core is uniform, that is, the temperature of each region of the atomization core is equal, which ensures that the atomization core uniformly heats the liquid, prevents the liquid from producing a burnt taste due to too high atomization temperature or failing to effectively atomize due to failing to reach the atomization temperature, and ensures that the liquid in each region of the atomization core is uniformly heated to form uniform atomization. And the atomization core is detachably connected with the shell, which is conducive to the rapid disassembly and installation of the atomization core, thereby facilitating the convenience of replacing the atomization core.

Description

TECHNICAL FIELD

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

[0002] The electronic atomization device generally comprises a ceramic substrate for storing liquid and a heating resistor arranged on the ceramic substrate. The heating resistor converts electrical energy into heat energy, which is conducted to the liquid through the ceramic substrate. The liquid absorbs the heat and is atomized to form an aerosol for smoking. However, the part of the ceramic substrate close to the heating resistor has a high temperature and forms a high-temperature area, while the part of the ceramic substrate far from the heating resistor has a low temperature and forms a low-temperature area, so that the temperature field on the ceramic substrate presents a certain gradient, i.e. the heat is not uniformly distributed on the ceramic substrate, which finally leads to the failure of the ceramic substrate and the entire electronic atomization device to achieve uniform heating. SUMMARY

[0003] One of the technical problems solved by the present application is how to achieve uniform heating of the electronic atomization device.

[0004] An electronic atomization device, comprising:

[0005] a housing, the housing being provided with an atomization cavity; and

[0006] an atomization core, the atomization core being arranged in the atomization cavity and detachably connected with the housing, the atomization core being used for storing liquid and capable of absorbing microwaves in the atomization cavity to generate heat, the atomization core being provided with a gas guide hole penetrating through the atomization core in a thickness direction and communicating with the atomization cavity.

[0007] In one of the embodiments, the atomization cavity is a cylindrical cavity.

[0008] In one of the embodiments, the electronic atomization device further comprises a heat insulation member located in the atomization cavity, the heat insulation member being arranged between the atomization core and the housing, and the heat insulation member being made of quartz glass material.

[0009] In one of the embodiments, the heat insulation member is made of quartz glass material; and / or, the heat insulation member further comprises a vacuum region surrounding the atomization core.

[0010] In one of the embodiments, the electronic atomization device further comprises an inner conductor and an outer conductor arranged coaxially, one end of the outer conductor being connected with the housing, the inner conductor being accommodated in the outer conductor, and a gap between the inner conductor and the outer conductor forming a transmission cavity, the transmission cavity communicating with the atomization cavity and being used for transmitting microwaves.

[0011] In one of the embodiments, the outer conductor forms an outer cylindrical cavity and an outer conical cavity, the outer conical cavity is communicated between the atomization cavity and the outer cylindrical cavity, the outer cylindrical cavity has a constant caliber, and the outer conical cavity has a caliber which increases in a direction of the atomization cavity along the outer conical cavity; the inner conductor comprises a cylindrical segment and a conical segment, the cylindrical segment has a constant cross-sectional dimension and is located in the outer cylindrical cavity, and the conical segment has a cross-sectional dimension which increases in a direction of the atomization cavity along the conical segment, and the conical segment is located in the outer conical cavity.

[0012] In one of the embodiments, the cylindrical segment is provided with an inner cylindrical cavity having a constant caliber, the inner cylindrical cavity is coaxially arranged with the outer cylindrical cavity, the conical segment is provided with an inner conical cavity communicated with the atomization cavity, the inner conical cavity has a caliber which increases in a direction of the atomization cavity along the inner conical cavity, and the inner conical cavity is coaxially arranged with the outer conical cavity.

[0013] In one of the embodiments, the orthographic projection of the atomization core on the outer conductor is located within the coverage range of the outer conical cavity.

[0014] In one of the embodiments, the device further comprises a microwave generator, a coaxial cable and a coupling ring, the microwave generator and the coaxial cable are located outside the outer conductor, the coupling ring is located in the transmission cavity, the coaxial cable is electrically connected between the microwave generator and the coupling ring, and the microwave generator generates microwaves with a frequency of 2450MHz, 5800MHz or 915MHz.

[0015] In one of the embodiments, the device further comprises a liquid supply device and a liquid delivery pipe which are connected with each other, and the liquid supply device quantitatively delivers liquid to the atomization core through the liquid delivery pipe.

[0016] In one of the embodiments, the device further comprises a suction nozzle and a metal plate, the metal plate is provided with a plurality of meshes which penetrate the metal plate in a thickness direction, the housing is provided with a mounting hole communicated with the atomization cavity, and the metal plate is connected with the suction nozzle and seals the mounting hole.

[0017] One of the technical effects of one of the embodiments is that the atomization core absorbs microwaves in the atomization cavity to generate heat, so that the heat distribution of each region of the atomization core is uniform, i.e. the temperature of each region of the atomization core is equal, which ensures that the atomization core uniformly heats the liquid, prevents the liquid from producing a burnt taste due to a too high atomization temperature or failing to effectively atomize due to a failure to reach the atomization temperature, and ensures that the liquid in each region of the atomization core is uniformly heated to form uniform atomization. In addition, the atomization core and the housing are detachably connected, which is conducive to the quick disassembly and installation of the atomization core, thereby facilitating the convenience of replacing the atomization core. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1A schematic diagram of a planar cross-sectional structure of an electronic atomization device according to an embodiment. DETAILED DESCRIPTION

[0019] For the purpose of promoting an understanding of the principles of the application, reference will now be made to the embodiments illustrated in the drawings. There is shown in the drawings, several embodiments of the application. It is readily apparent to those skilled in the art that the application can be practiced without departing from the scope of the application. The following detailed description is presented in order to describe the preferred embodiments of the application. It should be noted that the detailed description is presented largely for purposes of enabling those skilled in the art to practice the application.

[0020] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "inner," "outer," "left," "right," and the like as used herein are used for illustration only and are not intended to be limiting.

[0021] Referring to Figure 1 An electronic atomization device 10 according to an embodiment includes a housing 100, a mouthpiece 210, a metal plate 220, an atomization core 230, a heat insulating member 240, an outer conductor 300, an inner conductor 400, a microwave generator 510, a coaxial cable 520, a coupling ring 530, a liquid supply 610, and a liquid delivery tube 620.

[0022] In some embodiments, the housing 100 is provided with an atomization cavity 110, which can serve as a microwave resonant cavity. The atomization cavity 110 can be a cylindrical cavity, i.e., the cross section of the atomization cavity 110 is circular. The atomization cavity 110 is provided with a mounting hole 120, which is in communication with the atomization cavity 110 and the outside when the housing 100 is alone. The suction nozzle 210 is used for user suction. The metal plate 220 can be a thin plate structure, and a plurality of mesh holes are provided on the metal plate 220 and arranged in a matrix on the metal plate 220. The metal plate 220 can be arranged at the end of the suction nozzle 210, and the metal plate 220 is connected with the housing 100 and closes the mounting hole 120. By arranging the metal plate 220, on the one hand, the microwave in the atomization cavity 110 can be shielded to prevent the microwave from leaking out of the atomization cavity 110 through the relatively large mounting hole 120, thereby improving the utilization rate of the microwave. Of course, since the mesh holes on the metal plate 220 have relatively small diameters, the microwave in the atomization cavity 110 can be effectively prevented from leaking through the mesh holes, thereby ensuring the shielding function of the metal plate 220 to the microwave. On the other hand, the gas can flow through the mesh holes on the metal plate 220, so that the gas flows from one side of the metal plate 220 to the other side of the metal plate 220 through the mesh holes. When the user sucks through the suction nozzle 210, the gas in the atomization cavity 110 can smoothly enter the suction nozzle 210 through the mesh holes in the metal plate 220, thereby effectively eliminating the hindering effect of the metal plate 220 on user suction.

[0023] In some embodiments, the atomization core 230 is arranged in the atomization cavity 110, and the atomization core 230 is detachably connected with the housing 100. Therefore, the atomization core 230 is a relatively independent structure, so that the atomization core 230 can be replaced relative to the housing 100. The atomization core 230 can be made of porous microwave-absorbing ceramic and used for buffering liquid. The porous microwave-absorbing ceramic can be silicon carbide material or a composite ceramic material of silicon carbide and titanium carbide. The atomization core 230 can be made by flow casting, injection molding or dry pressing process. The atomization core 230 made of porous microwave-absorbing ceramic has the function of absorbing microwaves to generate heat. Of course, the liquid buffered in the atomization core 230 also has the function of absorbing microwaves to generate heat. When the liquid absorbs heat and rises to the atomization temperature, the liquid will be atomized to form an aerosol for user suction. The aerosol is first discharged into the atomization cavity 110, and then enters the suction nozzle 210 through the mesh holes of the metal plate 220 to be inhaled by the user. Therefore, when the atomization core 230 buffering the liquid is placed in the atomization cavity 110 with microwaves, the atomization core 230 absorbs heat while the microwaves themselves absorb microwaves to generate heat. Under the joint action of the two kinds of heat, the liquid can rapidly rise to the atomization temperature in a short time, thereby improving the atomization speed of the liquid.

[0024] The atomization core 230 has good chemical stability, the melting point of the atomization core 230 can reach 1000 DEG C or above, can resist high temperature, and will not react with the liquid in a high temperature environment, avoiding the additional loss of the liquid due to participating in the chemical reaction, ensuring that the liquid is used for atomization, thereby improving the utilization rate of the liquid. At the same time, it can avoid the generation of odor gas due to the participation of the chemical reaction, preventing the odor gas from affecting the user's smoking experience. The atomization core 230 also has a high thermal conductivity, so that the atomization core 230 has good heat conduction performance, so that the heat is more evenly distributed throughout the atomization core 230.

[0025] The atomization core 230 made of porous wave-absorbing ceramic material contains a large number of micropores and has a certain porosity. The porosity is defined as the percentage of the volume of the pores in the object to the total volume of the material in the natural state. The porosity of the substrate 100 can be 50% to 60%, for example, the porosity can be 50%, 55%, 58% or 60%, etc. The cross-sectional size of the micropore is 1 μm to 100 μm, for example, the cross-sectional size of the micropore can be 1 μm, 10 μm, 50 μm or 100 μm, etc. When the micropore is a circular hole, the cross-sectional size of the micropore is the diameter of the micropore. Because the atomization core 230 has a certain porosity, the atomization core 230 can form a capillary effect. Under the above capillary effect, the liquid in contact with the atomization core 230 penetrates from the surface of the atomization core 230 into the atomization core 230 and is transported in the atomization core 230, so the atomization core 230 has a certain buffering and transmission function for the liquid.

[0026] The atomization core 230 is provided with a gas guide hole 231, which penetrates the entire atomization core 230 along the thickness direction, so that the gas guide hole 231 has openings on the two outer surfaces in the thickness direction of the atomization core 230. Obviously, the gas guide hole 231 communicates with the atomization chamber 110 through the opening. The part of the atomization chamber 110 located on the upper side of the atomization core 230 is denoted as the upper cavity 111, and the part of the atomization chamber 110 located on the lower side of the atomization core 230 is denoted as the lower cavity 112. The opening of the gas guide hole 231 at the upper end communicates with the upper cavity 111, and the opening of the gas guide hole 231 at the lower end communicates with the lower cavity 112. For the aerosol discharged into the lower cavity 112, the aerosol can enter the upper cavity 111 through the gas guide hole 231, and then enter the suction nozzle 210 through the mesh in the metal plate 220 for the user to suck.

[0027] In some embodiments, the thermal insulation 240 is made of quartz glass material, and the thermal insulation 240 made of quartz glass material has a lower thermal conductivity, so that the thermal insulation 240 has higher thermal insulation performance. Of course, the thermal insulation 240 can also be made of polytetrafluoroethylene material. The thermal insulation 240 is located in the atomization cavity 110, so that the shell 100 is sleeved outside the thermal insulation 240, and the thermal insulation 240 is sleeved outside the atomization core 230; in other words, the thermal insulation 240 is sleeved between the atomization core 230 and the shell 100. By arranging the thermal insulation 240, heat generated on the atomization core 230 can be prevented from being conducted to the outside through the shell 100. On the one hand, this can avoid the loss of heat on the atomization core 230 due to the heat being conducted to the outside through the shell 100, thereby improving the utilization rate of heat of the atomization core 230, so that the entire electronic atomization device 10 has good energy-saving effect. On the other hand, it can prevent the shell 100 from being heated by the heat of the atomization core 230, and in the case of contacting the shell 100, prevent the temperature of the shell 100 from causing the user to feel uncomfortable due to the scalding heat. To further improve the thermal insulation performance of the thermal insulation 240, a closed cavity can be arranged in the thermal insulation 240. Before being closed, the cavity can be subjected to vacuumizing treatment, and after the vacuumizing treatment is completed, the cavity is completely closed to ensure that the cavity is in a vacuum state. Since the thermal insulation 240 is provided with a cavity forming a vacuum state, the probability of heat being transferred to the shell 100 by heat conduction can be reduced, thereby further improving the thermal insulation performance of the thermal insulation 240. The thermal insulation 240 surrounds the vacuum region of the atomization core 230.

[0028] In some embodiments, the outer conductor 300 and the inner conductor 400 are coaxially arranged, the outer conductor 300 is substantially in a cylindrical structure, and the upper end of the outer conductor 300 is connected with the shell 100, so that the atomization cavity 110 is in communication with the cavity inside the outer conductor 300. The inner conductor 400 is accommodated in the cavity of the outer conductor 300, and the gap between the inner conductor 400 and the outer conductor 300 forms a transmission cavity 330, which is in communication with the atomization cavity 110 and is used for transmitting microwaves. The microwaves can be effectively transmitted to the atomization cavity 110 through the transmission cavity 330, so as to be absorbed by the atomization core 230 and the liquid to generate heat.

[0029] The outer conductor 300 is provided with an outer cylindrical cavity 310 and an outer conical cavity 320, both of which are in communication with each other, and the outer conical cavity 320 is located above the outer cylindrical cavity 310 and is in communication with the atomization cavity 110, in other words, the outer conical cavity 320 is in communication between the outer cylindrical cavity 310 and the atomization cavity 110. The caliber of the outer cylindrical cavity 310 remains constant along the axial direction of itself, and the caliber of the outer conical cavity 320 gradually increases along the direction of the outer conical cavity 320 pointing to the atomization cavity 110, that is, from bottom to top. For example, the outer cylindrical cavity 310 can be a cylindrical cavity, and the outer conical cavity 320 can be a circular truncated cone cavity. The inner conductor 400 includes a cylindrical segment 410 and a conical segment 420, the cross-sectional dimension of the cylindrical segment 410 remains constant along the axial direction, and the cross-sectional dimension of the conical segment 420 gradually increases along the direction of the conical segment 420 pointing to the atomization cavity 110, that is, from bottom to top. For example, the cylindrical segment 410 can be a cylinder, and the conical segment 420 can be a circular truncated cone. The cylindrical segment 410 is located in the outer cylindrical cavity 310, and the conical segment 420 is located in the outer conical cavity 320. The space in the outer cylindrical cavity 310 and the outer conical cavity 320 that is not filled by the inner conductor 400 forms the transmission cavity 330 described above.

[0030] An inner cylindrical cavity 411 can be provided in the cylindrical segment 410, the caliber of the inner cylindrical cavity 411 remains constant along the axial direction of the cylindrical segment 410, and the inner cylindrical cavity 411 is coaxially arranged with the outer cylindrical cavity 310. An inner conical cavity 421 is provided in the conical segment 420, the lower end of the inner conical cavity 421 is in communication with the inner cylindrical cavity 411, and the upper end of the inner conical cavity 421 is in communication with the atomization cavity 110, that is, the inner conical cavity 421 is in communication between the atomization cavity 110 and the inner cylindrical cavity 411. The inner conical cavity 421 is coaxially arranged with the outer conical cavity 320, and the caliber of the inner conical cavity 421 gradually increases along the direction of the inner conical cavity 421 pointing to the atomization cavity 110, that is, from bottom to top. For example, the inner cylindrical cavity 411 can be a cylindrical cavity, and the inner conical cavity 421 can be a circular truncated cone cavity. Of course, the entire inner conductor 400 can be provided with a cylindrical cavity, and the caliber of the cylindrical cavity remains constant along the axial direction.

[0031] By providing the outer conical cavity 320, the upward radiation area of the microwaves can be increased, and it is ensured that the microwaves cover all areas of the atomization core 230. This makes the radiation of the microwaves more uniform, effectively ensures the uniformity of the temperature of the atomization core 230, and ensures that the atomization core 230 can uniformly heat the liquid. In the actual manufacturing process, the conical cavity can be matched and set according to the cross-sectional dimension of the atomization core 230. The orthographic projection of the atomization core 230 on the outer conductor 300 is located within the coverage range of the outer conical cavity 320, so that the full coverage effect of the microwaves on the atomization core 230 can be further ensured.

[0032] In other embodiments, the outer conductor 300 encloses a cylindrical cavity with a constant cross section along the axial direction, and the inner conductor 400 is a cylindrical body with a constant cross section along the axial direction, or a solid structure without a cavity.

[0033] In some embodiments, the microwave generator 510 can be a solid-state microwave source, and the coaxial cable 520 and the microwave generator 510 are both located outside the outer conductor 300, and the coupling loop 530 is located in the transmission cavity 330. One end of the coaxial cable 520 is electrically connected to the microwave generator 510, and the other end of the coaxial cable 520 is electrically connected to the coupling loop 530, i.e., the coaxial cable 520 is electrically connected between the microwave generator 510 and the coupling loop 530. When the microwave generator 510 generates microwaves, the microwaves are effectively fed into the transmission cavity 330 through the coaxial cable 520 and the coupling loop 530, and then radiated from the transmission cavity 330 into the atomization cavity 110. The microwaves in the atomization cavity 110 will cover the entire atomization wick 230, i.e., each region of the atomization wick 230 is uniformly covered by microwaves, so that the atomization wick 230 and the liquid absorb microwaves and generate heat. The frequency of the microwaves generated by the microwave generator 510 can be 2450 MHZ, and in other embodiments, the frequency of the microwaves generated by the microwave generator 510 can be 5800 MHZ or 915 MHZ.

[0034] In some embodiments, the liquid supply device 610 includes a liquid storage tank 611 and a liquid delivery pump 612, and the liquid storage tank 611 and the liquid delivery pump 612 are both located outside the outer conductor 300. The liquid storage tank 611 is used to store liquid, and the liquid delivery pipe 620 can be arranged in the inner conductor 400 and the atomization wick 230 at the same time. When the liquid delivery pump 612 works, the liquid in the liquid storage tank 611 enters the atomization wick 230 through the liquid delivery pipe 620, so that the liquid storage tank 611 supplies liquid to the atomization wick 230 through the liquid delivery pipe 620. The pumping amount of the liquid delivery pump 612 can be adjusted, so that the liquid delivery pump 612 supplies a certain amount of liquid to the atomization wick 230 at a time through the liquid delivery pipe 620, thereby realizing accurate quantitative supply of liquid to the atomization wick 230, so that the atomization wick 230 can meet the individual needs of users, and finally improve the user experience.

[0035] In operation, firstly, the liquid in the liquid storage tank 611 is quantitatively supplied to the atomizing core 230 by the liquid pump 612 through the liquid supply pipe 620. Then, the microwave generator 510 generates microwaves which are fed into the transmission cavity 330 through the coaxial cable 520 and the coupling ring 530, and the microwaves in the transmission cavity 330 are further radiated into the atomizing cavity 110, so that the atomizing core 230 and the liquid can absorb the microwaves and generate heat, and then the liquid is atomized to form aerosol. The aerosol discharged into the upper cavity body 111 can enter the suction nozzle 210 through the mesh holes of the metal plate 220 to be inhaled by the user, while the aerosol discharged into the lower cavity body 112 enters the upper cavity body 111 through the air guide hole 231, and then enters the suction nozzle 210 through the mesh holes of the metal plate 220 to be inhaled by the user.

[0036] If the mode of directly attaching the heating resistor to the ceramic base body is adopted, at least the following defects exist: firstly, the area of the ceramic base body close to the heating resistor absorbs more heat, thereby forming a high-temperature area with a higher temperature, while the area of the ceramic base body far from the heating resistor absorbs less heat, thereby forming a low-temperature area with a lower temperature, so that the temperature distribution of each area of the ceramic base body has a certain gradient, i.e. the temperature distribution is uneven. Therefore, the liquid in the high-temperature area will produce a burnt taste due to too high atomizing temperature, and the liquid in the low-temperature area cannot be effectively atomized due to failure to reach the atomizing temperature, ultimately resulting in uneven atomization of the liquid in each area of the ceramic base body. Secondly, the heating resistor is prone to dry burning due to too high heating temperature and insufficient liquid immersion, which will affect the service life of the heating resistor, make the heating resistor easily fall off the ceramic base body, and make the liquid form high-temperature cracking and produce harmful substances. Moreover, a large amount of carbide will gradually accumulate on the heating resistor to form carbon deposition, and the carbide will produce peculiar smell gas under the action of heat, thereby affecting the user's smoking experience. Thirdly, the heating resistor is in direct contact with the liquid, thereby polluting the liquid to some extent, and even causing heavy metal elements to enter the aerosol formed by atomizing the liquid, which will affect the safety of the electronic atomizing device. Fourthly, when the heating resistor is damaged, it is difficult or even impossible to disassemble the ceramic base body, so that a new ceramic base body or heating resistor cannot be effectively replaced. Fifthly, it takes a long time for the heating resistor to rise to the atomizing temperature, and in addition, the heat conduction of the heating resistor to the liquid through the ceramic base body also needs time, so as to further prolong the time for the liquid to reach the atomizing temperature, thereby affecting the atomizing efficiency.

[0037] And for the electronic atomization device 10 in the above embodiment, there will be at least the following beneficial effects: first, the atomization core 230 absorbs microwaves to generate heat, that is, the polar molecules in the atomization core 230 that can absorb microwaves generate mutual friction under the action of microwaves, thereby converting into heat energy. Since the contact opportunities of each region of the atomization core 230 with microwaves are equal, the heat distribution of each region of the atomization core 230 is uniform, that is, the temperature of each region of the atomization core 230 is equal, so that the atomization core 230 forms a uniform heating mode for the liquid, prevents the liquid from producing a burnt taste due to too high atomization temperature or failing to effectively atomize due to not reaching the atomization temperature, and ensures that the liquid in each region of the atomization core 230 is uniformly heated to form uniform atomization. Second, the atomization core 230 directly generates heat to heat the liquid, thereby eliminating the presence of a heating resistor, which can avoid the odor generated by carbon deposition on the heating resistor, and at the same time avoid the high-temperature cracking of the liquid caused by dry burning of the heating resistor, thereby improving the user's smoking experience. Third, it can avoid the pollution of the liquid caused by the heating resistor, thereby improving the safety of the electronic atomization device 10. Fourth, the atomization core 230 is detachably connected with the shell 100, which is conducive to the quick disassembly and installation of the atomization core 230, thereby facilitating the convenience of replacing the atomization core 230. Fifth, the microwave heating efficiency is high, so that the atomization core 230 rapidly heats up to the atomization temperature in a short time, and the atomization core 230 directly conducts heat to the liquid without other intermediate medium, further eliminating the heat conduction time on the intermediate medium, so that the liquid reaches the atomization temperature in a short time and atomizes. Furthermore, in the case that the liquid itself can also absorb microwaves and generate heat, the time required for the liquid to reach the atomization temperature can be further shortened, thereby further improving the atomization efficiency.

[0038] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0039] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. An electronic atomizing device, characterized by, The utility model relates to a microwave atomizer, comprising: a shell, which is provided with an atomizing cavity; and an atomizing core, which is arranged in the atomizing cavity and detachably connected with the shell, is used for buffering liquid, can absorb microwaves in the atomizing cavity to generate heat, and is provided with a gas guide hole penetrating through the atomizing core along a thickness direction and communicating with the atomizing cavity; further comprising an inner conductor and an outer conductor arranged coaxially, one end of the outer conductor is connected with the shell, the inner conductor is accommodated in the outer conductor, a gap between the inner conductor and the outer conductor forms a transmission cavity, the transmission cavity communicates with the atomizing cavity and is used for transmitting microwaves; the outer conductor surrounds an outer cylindrical cavity and an outer conical cavity, the outer conical cavity communicates between the atomizing cavity and the outer cylindrical cavity, the outer cylindrical cavity has a constant caliber, the caliber of the outer conical cavity increases along a direction of the outer conical cavity pointing to the atomizing cavity, the inner conductor comprises a cylindrical segment and a conical segment, the cylindrical segment has a constant cross-sectional dimension and is located in the outer cylindrical cavity, the cross-sectional dimension of the conical segment increases along a direction of the conical segment pointing to the atomizing cavity, and the conical segment is located in the outer conical cavity; further comprising a liquid supply device and a liquid delivery pipe connected with each other, the liquid supply device quantitatively delivers liquid to the atomizing core through the liquid delivery pipe.

2. The electronic atomizing device of claim 1, wherein, The atomizing core is made of porous wave-absorbing ceramic.

3. The electronic atomizing device of claim 2, wherein, The atomizing core comprises a base body, and the porosity of the base body is 50% to 60%.

4. The electronic atomizing device of claim 1, wherein, The cylindrical segment is provided with an inner cylindrical cavity having a constant caliber, the inner cylindrical cavity is coaxially arranged with the outer cylindrical cavity, the conical segment is provided with an inner conical cavity communicating with the atomizing cavity, the caliber of the inner conical cavity increases along a direction of the inner conical cavity pointing to the atomizing cavity, and the inner conical cavity is coaxially arranged with the outer conical cavity.

5. The electronic atomizing device of claim 1, wherein, A normal projection of the atomizing core on the outer conductor is located within a coverage range of the outer conical cavity.

6. The electronic atomizing device of claim 1, wherein, Further comprising a microwave generator, a coaxial cable and a coupling ring, the microwave generator and the coaxial cable are located outside the outer conductor, the coupling ring is located in the transmission cavity, the coaxial cable is electrically connected between the microwave generator and the coupling ring, and the microwave generator generates microwaves with a frequency of 2450 MHz, 5800 MHz or 915 MHz.

7. The electronic atomizing device of claim 1, wherein, The atomizing cavity is a cylindrical cavity.

8. The electronic atomizing device of claim 1, wherein, Further comprising a heat insulation member located in the atomizing cavity, the heat insulation member is sleeved between the atomizing core and the shell.

9. The electronic atomizing device of claim 8, wherein, The heat insulation member is made of quartz glass material.

10. The electronic atomizing device of claim 8, wherein, The heat insulation member further comprises a vacuum region surrounding the atomizing core.

11. The electronic atomizing device of claim 1, wherein, Further comprising a suction nozzle and a metal plate, the metal plate is distributed with a plurality of meshes penetrating through the metal plate along a thickness direction, the shell is provided with a mounting hole communicating with the atomizing cavity, and the metal plate is connected with the suction nozzle and closes the mounting hole.

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