Oil return prevention atomization device and electronic cigarette thereof

Abstract

The utility model relates to the technical field of electronic atomization, in particular to an anti-oil-return atomization device and an electronic cigarette thereof.The atomization device comprises a body, an atomization core, an oil storage cavity and an oil adding cavity are arranged in the body, the oil storage cavity supplies oil to the atomization core, and the oil adding cavity communicates with the oil storage cavity; the body is provided with a first bottom wall corresponding to the bottom end of the oil adding cavity, the first bottom wall is provided with an oil inlet through hole, and an annular flange protruding upwards relative to the first bottom wall is arranged in the oil adding cavity along the oil inlet through hole. The atomizer has the advantages that the annular flange is arranged, tobacco tar in the tar storage cavity is prevented from completely flowing into the tar bottle, and the atomizing core is prevented from being damaged due to dry burning; 2, the connecting piece is arranged, so that oil bottles with different calibers can be adapted, and the compatibility is higher; and 3, the vent hole is formed in the side wall of the tar bin and is matched with the tar absorbing cotton in the tar receiving cavity, so that residual atomized or condensed tobacco tar in the atomizing core cannot flow out from the air inlet hole after dripping, and the problem that the tobacco tar is easy to leak due to air entering from the bottom of a conventional electronic cigarette is solved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic atomization, and particularly relates to an atomization device for preventing oil backflow and an electronic cigarette thereof. Background Art

[0002] An electronic cigarette (also known as an "e-cigarette") is an electronic delivery system for generating an aerosol from an atomization matrix for a user to inhale. The atomization matrix can be a liquid (e.g., e-liquid, etc.) or a solid or gel (e.g., tobacco paste).

[0003] Generally, a traditional electronic cigarette mainly includes a cartridge storing an atomization matrix and a power supply device. The cartridge has a heating or evaporation device, such as an atomizer including an atomization core. The power supply device powers the atomization core to convert the atomization matrix in the cartridge into an aerosol for the user to inhale. In many electronic cigarettes, the user's inhalation activates the atomization core, vaporizing the liquid-form atomization matrix in the cartridge, and then the user inhales the generated aerosol through the mouthpiece.

[0004] In the existing refillable electronic cigarette, an oil bottle is provided to refill the oil tank. However, in actual use, the e-liquid in the oil tank is likely to all flow back into the oil bottle, resulting in dry burning and damage of the atomization core, and there is room for improvement. Summary of the Invention

[0005] To overcome the technical defect of easy oil backflow in the prior art, on the one hand, the present application provides an atomization device for preventing oil backflow, including a body. An atomization core, an oil storage cavity, and an oil filling cavity are provided in the body. The oil storage cavity supplies oil to the atomization core. The oil filling cavity is communicated with the oil storage cavity. The body is provided with a first bottom wall corresponding to the bottom end of the oil filling cavity. The first bottom wall is provided with an oil inlet through hole. An annular flange protruding upward relative to the first bottom wall is provided in the oil filling cavity along the oil inlet through hole.

[0006] As one implementation manner, the annular flange is connected to or integrally formed with the body.

[0007] As one implementation manner, an oil bottle is detachably installed at the oil inlet through hole of the body. The oil bottle has an opening. One end of the oil bottle with the opening extends into the oil filling cavity from the oil inlet through hole. One end of the oil bottle with the opening protrudes relative to the first bottom wall as the annular flange.

[0008] As one implementation manner, a partition wall is provided between the oil storage cavity and the oil filling cavity of the body. The partition wall is provided with an oil through hole. The body has a top wall corresponding to the top end of the oil filling cavity. There is a distance between one end of the annular flange facing the inside of the oil filling cavity and the top wall. One end of the annular flange facing the inside of the oil filling cavity is higher than at least part of the area of the oil through hole.

[0009] As one embodiment, the main body is provided with a second bottom wall corresponding to the bottom end of the oil storage cavity, the first bottom wall is not lower than the second bottom wall, and the oil hole extends to the adjacent junction of the first bottom wall and the second bottom wall.

[0010] As one embodiment, the first bottom wall has a guide slope for guiding the tobacco oil to the oil through hole.

[0011] As one embodiment, the main body includes an oil tank and a sealing member, one end of the oil tank has a smoking nozzle, the other end of the oil tank is open and the sealing member is installed at the opening, the sealing member includes a first sealing plug and a second sealing plug for sealing the oil filling chamber and the oil storage chamber respectively, the first bottom wall and the second bottom wall are formed on the end faces of the first sealing plug and the second sealing plug, and the oil inlet hole is opened on the first sealing plug.

[0012] As one of the embodiments, the atomization core is arranged in the oil bin, the oil storage cavity surrounds the outer circumference of the atomization core, the atomization core has an atomization channel, the smoking nozzle has a smoking port, the atomization channel is connected to the smoking port, the side of the oil bin is provided with an air inlet hole, the oil bin is provided with an air inlet channel connected to the air inlet hole, and the air inlet channel is connected to the atomization channel.

[0013] As one of the implementation modes, a base is installed on the side of the seal away from the oil tank, and an oil receiving chamber is provided in the base. The oil receiving chamber is located below the atomization channel and connects the atomization channel with the air intake channel, and oil absorbent cotton is provided in the oil receiving chamber.

[0014] As one of the implementation modes, the main body is provided with a mounting hole communicating with the oil inlet through hole, a connecting piece is detachably mounted in the mounting hole, and the oil bottle is detachably connected to the connecting piece.

[0015] As one embodiment, the connecting piece is an annular structure, the connecting piece is interference fit with the mounting hole, and the oil bottle is threadedly connected to the connecting piece.

[0016] As one embodiment, one end of the connecting member extends into the oil filling chamber and serves as the annular flange, or the annular flange is connected to the base and extends into the oil filling chamber.

[0017] As one of the implementation modes, a vent hole is provided at a position of the sealing member opposite to the air inlet passage, and a pressure relief hole connecting the liquid storage chamber and the outside air is also provided on the sealing member, and oil-blocking cotton is provided at the pressure relief hole.

[0018] As one of the embodiments, the base is provided with a conductive electrode and a magnetic attraction member, and the conductive electrode is electrically connected to the atomizing core through a wire.

[0019] On the other hand, the present application provides an electronic cigarette, which includes an atomizing device for preventing oil backflow and a power supply component for supplying power to the atomizing device.

[0020] In summary, the beneficial effects of the present application are as follows: 1. A ring-shaped flange is provided to prevent all the e-liquid in the oil storage cavity from flowing into the oil bottle, preventing the atomizing core from being damaged by dry burning; 2. A connecting member is provided, which can be adapted to oil bottles with different diameters, with higher compatibility; 3. The ventilation holes are arranged on the side wall of the oil storage chamber. Cooperating with the oil absorption cotton in the oil receiving cavity, the e-liquid droplets remaining or condensed in the atomizing core will not flow out from the air inlet holes after dripping, avoiding the problem of easy oil leakage at the bottom air inlet of conventional electronic cigarettes; 4. A pressure relief hole and oil blocking cotton are provided to prevent negative pressure from affecting the oil supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the electronic cigarette of the present application.

[0022] Figure 2 It is a schematic structural diagram of an atomizing device for preventing oil backflow according to the present application.

[0023] Figure 3 It is an exploded view of an atomizing device for preventing oil backflow according to the present application.

[0024] Figure 4 It is a schematic structural diagram of the oil storage chamber in an atomizing device for preventing oil backflow according to the present application.

[0025] Figure 5 It is a schematic structural diagram of the seal in an atomizing device for preventing oil backflow according to the present application.

[0026] Figure 6 It is a front view of the seal in an atomizing device for preventing oil backflow according to the present application.

[0027] Figure 7 It is a schematic structural diagram of the base in an atomizing device for preventing oil backflow according to the present application (without installing oil absorption cotton).

[0028] Figure 8 It is a schematic structural diagram of the base in an atomizing device for preventing oil backflow according to the present application (installed with oil absorption cotton).

[0029] Figure 9 It is a cross-sectional view of an atomizing device for preventing oil backflow according to the present application.

[0030] Description of the reference numerals:

[0031] 100. Body; 10. Oil tank; 11. Atomization core; 111. Atomization channel; 12. Oil storage cavity; 13. Refueling cavity; 14. Smoking mouthpiece; 141. Smoking port; 15. Air inlet hole; 16. Air inlet channel; 17. Partition wall; 18. Oil through hole;

[0032] 20. Sealing member; 21. Flow guiding inclined surface; 22. Ventilation hole; 23. Pressure relief hole; 24. Oil blocking cotton; 25. First sealing plug; 251. First bottom wall; 252. Oil inlet through hole; 26. Second seal; 261. Second bottom wall;

[0033] 30. Base; 31. Oil receiving cavity; 32. Oil absorbing cotton; 33. Annular flange;

[0034] 40. Mounting hole; 41. Connecting member; 42. Oil bottle; 43. Sealing ring; 50. Conductive electrode; 60. Magnetic attracting member;

[0035] 200. Power supply assembly. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present disclosure.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present disclosure are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0038] In the present disclosure, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, they can be directly connected, or indirectly connected through an intermediate medium. They can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

[0039] In this article, "communication" refers to fluid communication, that is, a fluid (including liquid and / or gas) can flow from one component to another component. In addition, in this article, the communication between two components can refer to the direct communication between two components. For example, at least part of two holes are aligned, or through an intermediate medium.

[0040] In this disclosure, unless otherwise specified, all numbers representing component parameters, technical effects, etc. used in this specification and claims shall be understood to be modified by the term "about" or "substantially" in any case. Therefore, unless otherwise indicated, the numerical parameters listed in the following specification and appended claims are approximate values. For those skilled in the art, they can vary according to the desired properties and effects sought through this disclosure and should be interpreted according to the number of significant digits and conventional rounding methods or the manner understood by those skilled in the art for each numerical parameter.

[0041] In this disclosure, the terms used in the description of various examples are only for the purpose of describing specific examples and are not intended to be restrictive. Unless the context clearly indicates otherwise, if the number of elements is not specifically defined, the element can be one or more. In addition, the term "and / or" used in this disclosure covers any one of the listed items and all possible combinations.

[0042] "Atomization matrix" refers to a mixture or auxiliary substance that can be fully or partially atomized into an aerosol by an electronic device or a similar device. The atomization matrix can be media such as e-liquid for e-cigarettes, medical drugs, skin care lotions, etc. in liquid form. By atomizing these media, an aerosol that can be inhaled or absorbed can be delivered to the user.

[0043] "Aerosol" refers to a colloidal dispersion system formed by solid or liquid small particles dispersed and suspended in a gas medium.

[0044] "Atomizer" refers to a device that forms an aerosol by heating or ultrasonic means the stored atomizable matrix, i.e., the atomization matrix. The atomization core is one of the main components of the atomizer.

[0045] "E-cigarette" refers to a system that generates an aerosol (i.e., smoke) by atomizing an atomization matrix, such as e-liquid, for people to inhale, suck, chew, or nasal inhale, etc. In some examples, the e-cigarette may include an oil storage cavity for storing e-liquid and an atomization core for adsorbing and atomizing the e-liquid to form smoke.

[0046] In the related technology of e-cigarettes, the atomization core includes a heating element and a wicking member. The heating element is used to heat the e-liquid to form smoke, and the wicking member is used to guide the e-liquid in the oil storage chamber around the atomization core to the heating element. The heating element can be made of a metal wire that conducts heat when electrified, and the wicking member is made of cotton or fiber materials, etc. The heating element is wrapped by the wicking member. The heating element can also be made of a metal sheet that conducts heat when electrified, and the wicking member is made of materials such as ceramics and can be formed into a hollow sheet-like wicking member. The heating element can be partially embedded on the inner wall of the wicking member.

[0047] The present application will be further described below in conjunction with the accompanying drawings:

[0048] As Figures 1-9 shown, this embodiment provides an electronic cigarette, which includes an atomization device for preventing oil backflow and a power supply component 200 for powering the atomization device. The power supply component 200 is magnetically connected to the atomization device through a magnetic component 60.

[0049] In some embodiments, the atomization device for preventing oil backflow includes a main body 100, the main body 100 includes an oil storage chamber 10, a sealing member 20 and a base 30. An atomization core 11, an oil storage cavity 12 and an oil filling cavity 13 are provided inside the main body 100. The oil storage cavity 12 supplies oil to the atomization core 11. The oil filling cavity 13 is communicated with the oil storage cavity 12. A first bottom wall 251 is provided at a position corresponding to the bottom end of the oil filling cavity 13 of the main body 100. A second bottom wall 261 is provided at a position corresponding to the bottom end of the oil storage cavity 12 of the main body 100. An oil inlet through hole 252 is provided on the first bottom wall 251. A ring-shaped flange 33 protruding upward relative to the first bottom wall 251 is provided along the oil inlet through hole 252 in the oil filling cavity 13. During use, e-liquid is added to the oil filling cavity 13 through the oil inlet through hole 252. The e-liquid in the oil filling cavity 13 can flow into the oil storage cavity 12. The oil storage cavity 12 supplies oil to the atomization core 11. The atomization core 11 atomizes the e-liquid for the user to inhale. The provision of the ring-shaped flange 33 can prevent all the e-liquid in the oil storage cavity 12 and the oil filling cavity 13 from flowing back out through the oil inlet through hole 252, avoiding dry burning of the atomization core 11. It should be noted that the atomization core 11 adopts the prior art, and its specific structure will not be described again here. Modifying the atomization core 11 on the basis of the present application is still within the protection scope of the present application. For example, the atomization core 11 includes an electric heating element and an oil guiding member. The electric heating element is made of a conductive metal, graphene or a carbon nanotube conductive material. The oil guiding member is made of porous ceramic, cotton or oil-absorbing fiber. The electric heating element is coated or embedded in the oil guiding member, or the electric heating element is coated or wound outside the oil guiding member. The atomization core may further include an atomization tube, and an oil inlet hole is provided on the atomization tube. The electric heating element and the oil guiding member are installed inside the atomization tube.

[0050] Referring to Figure 3 and Figure 4In some embodiments, one end of the oil bin 10 has a smoking nozzle 14, and the other end of the oil bin 10 is open and the sealing member 20 is installed at the opening. Specifically, an oil storage chamber 12 and an oil adding chamber 13 are formed inside the oil bin 10, and the atomizer core 11 is installed in the oil bin 10, and the oil storage chamber 12 surrounds the outer circumference of the atomizer core 11 to supply oil for it; a partition wall 17 is provided between the oil storage chamber 12 and the oil adding chamber 13 of the main body 100, and an oil through hole 18 is opened in the partition wall 17, and the main body 100 has a top wall corresponding to the top end of the oil adding chamber 13, and a distance is left between the end of the annular flange 33 facing the inside of the oil adding chamber 13 and the top wall, and the end of the annular flange 33 facing the inside of the oil adding chamber 13 is higher than at least a part of the oil through hole 18. The seal 20 prevents oil leakage from the oil storage chamber 12 and the oil filling chamber 13. The oil filling chamber 13 adds oil to the oil storage chamber 12 through the oil through hole 18. The upper end of the annular flange 33 is higher than at least part of the oil through hole 18, which can ensure that the oil in the oil filling chamber 13 flows smoothly into the oil storage chamber 12 and does not flow back out of the oil through hole 252. The seal 20 is made of silicone, plastic or rubber. It should be noted that the upper end of the annular flange 33 is higher than at least part of the oil through hole 18, which means that the upper end of the annular flange 33 is at least higher than the lowest end of the oil through hole 18.

[0051] Reference Figure 5 , 6 9, in some embodiments, the sealing member 20 includes a first sealing plug 25 and a second sealing plug 26 for sealing the oil filling chamber 13 and the oil storage chamber 12 respectively, and the first sealing plug 25 and the second sealing plug 26 are arranged in parallel, and the first sealing plug 25 and the second sealing plug 26 are an integral structure made of rubber, silicone or plastic material. In some other embodiments, the first sealing plug 25 and the second sealing plug 26 can be set as two separate sealing plugs. The first bottom wall 251 and the second bottom wall 261 are formed on the end faces of the first sealing plug 25 and the second sealing plug 26, and the oil inlet through hole 252 is opened on the first sealing plug 25; refer to Figure 9 The first bottom wall 251 is not lower than the second bottom wall 261 , the oil through hole 18 extends to the adjacent joint of the first bottom wall 251 and the second bottom wall 261 , and the first bottom wall 251 has a guide slope 21 for guiding the smoke oil to the oil through hole 18 .

[0052] In some embodiments, the base 30 is disposed on a side of the seal 20 away from the oil tank 10, wherein, in some instances, the annular flange 33 is disposed on the base 30 of the main body 100 and is integrally formed with the base 30; in other instances, the annular flange 33 may also be disposed on the oil tank 10 and is integrally formed with the oil tank 10, in which case the oil storage chamber 12 is composed of the upper and lower parts of the oil tank 10 and the base 30, and the oil filling chamber 13 is formed by the oil tank 10 as a whole.

[0053] In some embodiments, an oil bottle 42 is detachably mounted at the oil inlet through hole 252 of the body 100. The oil bottle 42 has an opening, and one end of the oil bottle 42 with the opening extends into the oil filling cavity 13 from the oil inlet through hole 252. One end of the oil bottle 42 with the opening protrudes relative to the first bottom wall 251 as the annular flange 33. The interior of the oil bottle 42 communicates with the oil filling cavity 13. When the electronic cigarette is inverted, the e-liquid contained in the oil bottle 42 can flow into the oil filling cavity 13, and then the oil storage cavity 12 can be supplied with oil. According to Figure 1 and Figure 9 After the electronic cigarette is placed upright, under the block of the annular flange 33, the e-liquid will not all flow into the oil bottle 42.

[0054] As another optimization solution, in order to make the oil tank 10 adapt to oil bottles 42 with different bottle mouth sizes, an installation hole 40 communicating with the oil inlet through hole 252 is provided on the base 30 of the body 100. In some other embodiments, the installation hole 40 can be opened on the oil tank 10; a connector 41 is detachably installed in the installation hole 40, and a sealing ring 43 is provided at the connection between the connector 41 and the base 30 or the oil tank 10 to prevent oil leakage. The oil bottle 42 is detachably connected to the connector 41. When it is necessary to install an oil bottle 42 with a different bottle mouth size, only the corresponding connector 41 needs to be replaced.

[0055] In some embodiments, the connector 41 is of an annular structure, and the connector 41 is in interference fit with the installation hole 40, and the oil bottle 42 is threadedly connected to the connector 41. In some other embodiments, any one of the connection methods of threaded connection, snap connection, magnetic attraction connection, adhesive connection, and plug-in connection can be adopted between the connector 41 and the installation hole 40 or between the connector 41 and the oil bottle 42.

[0056] In some embodiments, one end of the connector 41 extends into the oil filling cavity 13 and serves as the annular flange 33, or the annular flange 33 is connected to the base 30 and extends into the oil filling cavity 13.

[0057] In some embodiments, an atomization channel 111 is provided in the atomization core 11. For example, the atomization core 11 includes an atomization tube with an oil inlet hole formed therein. An oil guiding member is installed in the atomization tube, and a through atomization channel is provided in the oil guiding member. The electro-heating element is embedded on the inner wall of the oil guiding member. The smoking mouthpiece 14 has a smoking port 141. The atomization channel 111 communicates with the smoking port 141. An air inlet hole 15 is provided on the side of the oil storage chamber 10. An air inlet channel 16 communicating with the air inlet hole 15 is provided in the oil storage chamber 10. The air inlet channel 16 communicates with the atomization channel 111. External air enters the main body 100 through the air inlet hole 15, passes through the air inlet channel 16 and the atomization channel 111, and then is discharged from the smoking port 141 together with the aerosol formed by atomizing the e-liquid for the user to inhale. By arranging the air inlet hole 15 on the side of the oil storage chamber 10, the e-liquid droplets remaining or condensed in the atomization in the atomization core 11 will not flow out from the air inlet hole 15, thus avoiding the problem of oil leakage.

[0058] In some embodiments, an oil receiving cavity 31 is provided in the base 30. The oil receiving cavity 31 is located below the atomization channel 111 and communicates the atomization channel 111 with the air inlet channel 16. An oil absorbing cotton 32 is provided in the oil receiving cavity 31. The e-liquid dripping from the atomization core 11 is collected in the oil receiving cavity 31 and then absorbed by the oil absorbing cotton 32, preventing the e-liquid in the oil receiving cavity 31 from flowing out through the air inlet hole 15.

[0059] In some embodiments, a ventilation hole 22 is provided at a position of the sealing member 20 opposite to the air inlet channel 16. A pressure relief hole 23 communicating the liquid storage cavity and the external air is further provided on the sealing member 20. An oil blocking cotton 24 is provided at the pressure relief hole 23. The pressure relief hole 23 is used to balance the air pressure inside and outside the oil storage chamber 10 to prevent the negative pressure from affecting the oil supply. The porosity of the oil blocking cotton 24 is relatively low and its oil absorption performance is poor, which can prevent the e-liquid from leaking out through the pressure relief hole 23. The oil blocking cotton 24 contacts the oil absorbing cotton 32, and the e-liquid on the oil blocking cotton 24 will be absorbed by the oil absorbing cotton 32, avoiding oil leakage.

[0060] In some embodiments, the base 30 is provided with a conductive electrode 50 and a magnetic attracting member 60. The power supply assembly 200 is magnetically connected to the atomization device through the magnetic attracting member 60. One end of the conductive electrode 50 is electrically connected to the atomization core 11 through a wire, and the other end of the conductive electrode 50 is electrically connected to the power supply assembly 200. Among them, the power supply assembly 200 includes a housing. A battery is installed in the housing. Some other conductive electrodes electrically connected to the two electrodes of the battery are also provided at one end of the housing. Some other magnetic attracting members are further provided on the housing. Among them, the magnetic attracting member can be iron or a magnet, etc.

[0061] Working principle: In this application, the internal space of the oil storage chamber 10 is divided into an oil storage cavity 12 and an oil filling cavity 13. By connecting an oil bottle 42 to the oil filling cavity 13, oil supply to the oil storage cavity 12 is achieved. When the electronic cigarette is inverted, the e-liquid contained in the oil bottle 42 can flow into the oil filling cavity 13. By providing an annular flange 33, it can effectively prevent all the e-liquid in the oil storage cavity 12 from flowing into the oil bottle 42, thus avoiding dry burning and damage of the atomization core 11. The annular flange 33 of this application can be provided on the oil storage chamber 10 or the base 30, or can be formed by the end of the oil bottle 42 or the connector 41 protruding relative to the first bottom wall 251. Secondly, in order to adapt to oil bottles 42 of different calibers, connectors 41 of corresponding specifications are provided, with higher compatibility. Finally, the ventilation hole 22 is provided on the side wall of the oil storage chamber 10, so that the e-liquid droplets remaining or condensed after atomization in the atomization core 11 will not flow out from the air inlet hole 15, avoiding the problem of easy oil leakage at the bottom air inlet of conventional electronic cigarettes.

[0062] The above are only embodiments or examples of the present disclosure, and do not limit the patent scope of the present disclosure accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present disclosure under the concept of the present disclosure, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present disclosure. Various elements in the embodiments or examples can be omitted or replaced by their equivalent elements. In addition, the steps can be executed in an order different from that described in the present disclosure. Further, the various elements in the embodiments or examples can be combined in various ways. Importantly, with the evolution of technology, many of the elements described herein can be replaced by equivalent elements that appear after the present disclosure.

Claims

1. An atomization device for preventing oil backflow, characterized in that, It includes a main body (100), inside which there are an atomizing core (11), an oil storage chamber (12) and an oil filling chamber (13). The oil storage chamber (12) supplies oil to the atomizing core (11). The oil filling chamber (13) is communicated with the oil storage chamber (12). The main body (100) is provided with a first bottom wall (251) corresponding to the bottom end of the oil filling chamber (13). The first bottom wall (251) is provided with an oil inlet through hole (252). Inside the oil filling chamber (13), along the oil inlet through hole (252), there is an annular flange (33) protruding upward relative to the first bottom wall (251).

2. The atomization device for preventing oil backflow according to claim 1, characterized in that, The annular flange (33) is connected to or integrally formed with the main body (100).

3. The atomization device for preventing oil backflow according to claim 1, characterized in that, At the oil inlet through hole (252) of the main body (100), an oil bottle (42) is detachably installed. The oil bottle (42) has an opening. The end of the oil bottle (42) with the opening extends into the oil filling chamber (13) from the oil inlet through hole (252). The end of the oil bottle (42) with the opening protrudes relative to the first bottom wall (251) as the annular flange (33).

4. The atomization device for preventing oil backflow according to claim 1, characterized in that, A partition wall (17) is provided between the oil storage chamber (12) and the oil filling chamber (13) of the main body (100). The partition wall (17) is provided with an oil through hole (18). The main body (100) has a top wall corresponding to the top end of the oil filling chamber (13). There is a distance between the end of the annular flange (33) facing the inside of the oil filling chamber (13) and the top wall. The end of the annular flange (33) facing the inside of the oil filling chamber (13) is higher than at least part of the area of the oil through hole (18).

5. The atomization device for preventing oil backflow according to claim 4, characterized in that, The main body (100) is provided with a second bottom wall (261) corresponding to the bottom end of the oil storage chamber (12). The first bottom wall (251) is not lower than the second bottom wall (261). The oil through hole (18) extends to the adjacent junction of the first bottom wall (251) and the second bottom wall (261).

6. The atomization device for preventing oil backflow according to claim 5, characterized in that, The first bottom wall (251) has a diversion inclined surface (21) for guiding the e-liquid to the oil through hole (18).

7. The atomization device for preventing oil backflow according to claim 5, characterized in that, The main body (100) includes an oil tank (10) and a seal (20). One end of the oil tank (10) has a smoking mouthpiece (14). The other end of the oil tank (10) is open and the seal (20) is installed at the opening. The seal (20) includes a first seal plug (25) and a second seal plug (26) for respectively sealing the oil filling chamber (13) and the oil storage chamber (12). The first bottom wall (251) and the second bottom wall (261) are formed on the end faces of the first seal plug (25) and the second seal plug (26). The oil inlet through hole (252) is opened on the first seal plug (25).

8. The atomization device for preventing oil backflow according to claim 7, wherein, The atomizing core (11) is disposed within the oil reservoir (10). The oil storage cavity (12) surrounds the outer periphery of the atomizing core (11). The atomizing core (11) has an atomizing channel (111). The mouthpiece (14) has a smoking port (141). The atomizing channel (111) is in communication with the smoking port (141). An air inlet hole (15) is provided on the side of the oil reservoir (10). An air inlet channel (16) communicating with the air inlet hole (15) is provided within the oil reservoir (10). The air inlet channel (16) communicates with the atomizing channel (111).

9. The atomization device for preventing oil backflow according to claim 8, characterized in that, A base (30) is installed on the side of the sealing member (20) facing away from the oil reservoir (10). An oil receiving cavity (31) is provided within the base (30). The oil receiving cavity (31) is located below the atomizing channel (111) and enables the atomizing channel (111) to communicate with the air inlet channel (16). An oil absorbing cotton (32) is provided within the oil receiving cavity (31).

10. The atomizing device for preventing oil backflow according to claim 9, characterized in that, The main body (100) is provided with a mounting hole (40) communicating with the oil inlet through hole (252). A connecting member (41) is detachably installed within the mounting hole (40). The oil bottle (42) is detachably connected to the connecting member (41).

11. The atomizing device for preventing oil backflow according to claim 10, wherein, The connecting member (41) is of an annular structure. The connecting member (41) has an interference fit with the mounting hole (40). The oil bottle (42) is threadedly connected to the connecting member (41).

12. The atomization device for preventing oil backflow according to claim 11, characterized in that, One end of the connecting member (41) extends into the oil filling cavity (13) and serves as the annular flange (33), or the annular flange (33) is connected to the base (30) and extends into the oil filling cavity (13).

13. The atomization device for preventing oil backflow according to claim 8, characterized in that, A ventilation hole (22) is provided at the position of the sealing member (20) opposite to the air inlet channel (16). A pressure relief hole (23) communicating the liquid storage cavity and the outside air is further provided on the sealing member (20). An oil blocking cotton (24) is provided at the pressure relief hole (23).

14. The atomization device for preventing oil backflow according to claim 9, characterized in that, The base (30) is provided with a conductive electrode (50) and a magnetic attracting member (60). The conductive electrode (50) is electrically connected to the atomizing core (11) through a wire.

15. An electronic cigarette, characterized in that, It includes an anti-backflow atomizing device as described in any one of claims 1-14 and a power supply assembly (200) for supplying power to the atomizing device.

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