An electronic cigarette

Abstract

The present invention discloses an electronic cigarette, comprising: a shell, the two ends of the shell are open, and the side wall of the shell has a first air inlet; a suction nozzle, the suction nozzle is arranged at one end of the shell, and the suction nozzle has a smoke outlet; a smoke oil bin; a mounting base, the mounting base is arranged at the other end of the shell, and one end of the smoke oil bin is connected to the mounting base; a micro pump, the micro pump is fixed on the mounting base, the micro pump has a fluid inlet and a fluid outlet connected to the pump chamber, the fluid inlet is connected to the oil inlet, and the fluid outlet is connected to the oil outlet; an atomizer core assembly for atomizing the smoke oil, the atomizer core assembly is arranged in the atomizer chamber, and the atomizer core assembly is fixed on the mounting base. According to the electronic cigarette of the present invention, the oil distribution is matched with the heat distribution through the oil delivery pipe, so as to solve the problems of oil leakage and dry burning of the electronic cigarette.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic cigarettes, and in particular to an electronic cigarette. Background Art

[0002] At present, most electronic cigarettes use microporous ceramic atomization cores and oil-conducting cotton cores wrapped around metal heating wires. When supplying oil, the microporous ceramic atomization core has sufficient oil supply at the oil port position but insufficient oil supply at the peripheral position, resulting in dry burning and oil leakage caused by the mismatch between oil distribution and heat distribution; the atomizer in the form of an oil-conducting cotton core wrapped around a metal heating wire uses capillary phenomenon to guide oil. As the oil level in the oil storage device changes, the mismatch between the oil supply distribution and the heat distribution causes dry burning and oil leakage, which is extremely harmful to the health of smokers.

[0003] For example, a Chinese application with publication number CN109805459A discloses an active oil supply atomization structure, in which the atomizer used is a ceramic atomizer. Even if the oil supply is actively supplied by a micro liquid pump, the oil introduced into the atomizer enters the atomizer from the center, which will cause the central part of the atomizer to be fully supplied with oil while the peripheral part is relatively insufficiently supplied with oil, resulting in a mismatch between heat and oil distribution, causing a local dry burning phenomenon.

[0004] For another example, a Chinese application with publication number CN109259325A discloses the structure of an electronic cigarette atomizer, and specifically discloses a structure in which a bundle of thin tubes fixed together is inserted into a smoke oil chamber, and the oil is guided by the formed capillary gap. The structure will cause the consumption of smoke oil to affect the change of the oil guiding speed. When the liquid level is low, the untimely oil guiding will cause dry burning. Summary of the invention

[0005] The present invention provides an electronic cigarette, wherein the electronic cigarette matches the oil distribution with the heat distribution through an oil delivery pipe, thereby solving the problems of oil leakage and dry burning of the electronic cigarette.

[0006] The electronic cigarette according to the embodiment of the present invention comprises: a shell, wherein both ends of the shell are open, and a first air inlet is formed on the side wall of the shell; a suction nozzle, wherein the suction nozzle is arranged at one end of the shell, and the suction nozzle has a smoke outlet; a smoke oil bin, wherein the smoke oil bin is arranged in the shell, the smoke oil bin has a smoke duct and an oil storage cavity separated from each other, one end of the smoke duct is connected with the smoke outlet, the bottom of the smoke oil bin has a first oil delivery hole connected with the oil storage cavity, the top of the smoke oil bin has an oil filling hole connected with the oil storage cavity, and the oil storage cavity has an open opening on a side opposite to the first air inlet; a flexible membrane, wherein the flexible membrane blocks the open opening, and the flexible membrane and the oil storage bin define a flexible oil bag; a mounting base, wherein the mounting base is arranged at the other end of the shell, one end of the smoke oil bin is connected to the mounting base, and the mounting base is connected to the shell, the suction nozzle and the smoke oil bin to define The atomization chamber connected with the smoke duct is provided with an oil inlet passage, one end of the oil inlet passage has a second oil delivery hole opposite to the first oil delivery hole, the second oil delivery hole is connected with the first oil delivery hole, the other end of the oil inlet passage has an oil inlet hole, and the mounting base is also provided with an oil outlet passage, the oil outlet passage is spaced apart from the oil inlet passage, one end of the oil outlet passage has an oil outlet hole, the other end of the oil outlet passage has an oil guide hole, and the bottom wall of the mounting base is provided with a second air inlet hole connected with the atomization chamber; a micro pump, the micro pump is fixed on the mounting base, the micro pump has a fluid inlet and a fluid outlet connected with a pump chamber, the fluid inlet is connected with the oil inlet hole, and the fluid outlet is connected with the oil outlet hole; an atomization core assembly for atomizing the smoke oil, the atomization core assembly is arranged in the atomization chamber, and the atomization core assembly is fixed on the mounting base.

[0007] The electronic cigarette according to the embodiment of the present invention uses an oil pipe to match the oil distribution with the heat distribution, thereby solving the problems of oil leakage and dry burning of the electronic cigarette. In addition, the flue and the flexible oil bag are arranged on a smoke oil bin, and the flue and the flexible oil bag are isolated to achieve the separation of the smoke oil and the flue, further preventing the smoke oil from being sucked into the mouth during the suction process, thereby improving the user experience.

[0008] According to some embodiments of the present invention, when the flexible oil bag is not filled with tobacco oil, the flexible membrane fits against the bottom wall of the oil storage cavity, and when the flexible oil bag is filled with tobacco oil, the flexible oil bag abuts against the inner wall of the shell.

[0009] According to some embodiments of the present invention, two spaced-apart electrodes are provided on the side wall of the micro pump, two spaced-apart electrode column holes are provided on the bottom wall of the mounting base, an electrode column is provided in each of the electrode column holes, and the electronic cigarette also includes two metal conductive foils, and the two metal conductive foils correspond to the two electrodes and the two electrode columns in a one-to-one manner, and the metal conductive foil includes: a first connecting section, one side of the first connecting section abuts against the electrode, and the other side of the first connecting section abuts against the inner wall of the shell; a second connecting section, the second connecting section is connected to the first connecting section, one side of the second connecting section abuts against the electrode column, and the extension direction of the second connecting section is perpendicular to the extension direction of the first connecting section.

[0010] According to some embodiments of the present invention, the atomization core assembly includes: an oil pipe, one end of the oil pipe having a third oil hole connected to the oil guide hole, the other end of the oil pipe is closed, and the peripheral wall of the oil pipe has an opening that penetrates the oil pipe in the thickness direction of the oil pipe, and the opening extends along the axial direction of the oil pipe; an oil guide sleeve, the oil guide sleeve is sleeved on the oil pipe, and the oil guide sleeve wraps the opening; a heating wire, the heating wire is wound around the outer peripheral wall of the oil guide sleeve.

[0011] According to some embodiments of the present invention, the opening on the oil pipeline is slit-shaped, and the slit width is 0.01-2.1 mm.

[0012] According to some embodiments of the present invention, the number of the opening is one or more, and the plurality of openings are spaced apart in the circumferential direction of the oil pipeline.

[0013] According to some embodiments of the present invention, the closed end of the oil pipeline is provided with an exhaust port communicating with the opening.

[0014] According to some embodiments of the present invention, a semipermeable membrane is provided on the end surface of the oil delivery pipe facing the exhaust port, the semipermeable membrane covers the exhaust port, and the semipermeable membrane allows gas to pass through but does not allow liquid to pass through.

[0015] According to some embodiments of the present invention, there are multiple exhaust ports, the shape of the semipermeable membrane is the same as the cross-sectional shape of the oil pipeline, and the outer periphery of the semipermeable membrane is connected to the outer periphery of the end face of the oil pipeline.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an electronic cigarette according to an embodiment of the present invention;

[0018] Figure 2 is a cross-sectional view of an electronic cigarette according to an embodiment of the present invention;

[0019] Figure 3 is a schematic structural diagram of a mouthpiece of an electronic cigarette according to an embodiment of the present invention;

[0020] Figure 4 is a three-dimensional diagram of a liquid tank of an electronic cigarette according to an embodiment of the present invention;

[0021] Figure 5 is a three-dimensional view of the e-cigarette oil tank in another direction according to an embodiment of the present invention;

[0022] Figure 6 is a cross-sectional view of a smoke oil bin of an electronic cigarette according to an embodiment of the present invention, wherein the flexible oil bag is in a non-oil-filled state;

[0023] Figure 7 is a cross-sectional view of a smoke oil bin of an electronic cigarette according to an embodiment of the present invention, wherein the flexible oil bag is in a state of being filled with oil;

[0024] Figure 8 is a schematic structural diagram of a shell of an electronic cigarette according to an embodiment of the present invention;

[0025] Fig. 9 is a schematic structural diagram of a mounting base of an electronic cigarette according to an embodiment of the present invention;

[0026] Fig.10 is a cross-sectional view of a mounting base of an electronic cigarette according to an embodiment of the present invention;

[0027] Fig.11 is a schematic structural diagram of a mounting base and a micro pump of an electronic cigarette according to an embodiment of the present invention;

[0028] Fig.12 is a schematic structural diagram of a metal conductive foil of an electronic cigarette according to an embodiment of the present invention;

[0029] Fig.13 is a schematic structural diagram of an atomizing core assembly of an electronic cigarette according to an embodiment of the present invention;

[0030] Fig.14 is a schematic structural diagram of an oil delivery pipe of an electronic cigarette according to an embodiment of the present invention;

[0031] Fig.15 is a diagram of the suction flow state of a micro pump of an electronic cigarette according to an embodiment of the present invention;

[0032] Fig.16 is a flow discharge state diagram of a micro pump of an electronic cigarette according to an embodiment of the present invention;

[0033] Fig.17is a schematic structural diagram of an oil pipeline according to another embodiment of the present invention;

[0034] Fig.18 yes Fig.17 A cross-sectional view of the structure;

[0035] Fig.19 is along Fig.18 Sectional view along line AA;

[0036] Fig. 20 is a schematic structural diagram of an oil pipeline according to yet another embodiment of the present invention;

[0037] Fig.21 yes Fig. 20 Cross-sectional view of the structure.

[0038] Reference numerals:

[0039] 1000: Electronic cigarettes,

[0040] 100: nozzle, 101: smoke outlet,

[0041] 200: smoke oil bin, 201: smoke duct, 202: oil filling hole, 203: first oil delivery hole,

[0042] 210: flexible oil bag, 211: oil storage chamber, 212: flexible membrane,

[0043] 220: limit connection groove, 230: first sealing groove, 231: first sealing ring,

[0044] 240: second sealing groove, 241: second sealing ring, 250: sealing plug,

[0045] 300: housing, 301: first air inlet,

[0046] 400: Mounting base, 410: Micro liquid pump mounting surface, 411: Oil inlet hole,

[0047] 412: oil outlet hole, 413: annular groove, 414: positioning flange, 415: lower limit surface notch,

[0048] 420: atomizer core mounting surface, 421: oil guide hole, 430: positioning boss, 431: second oil delivery hole,

[0049] 440: electrode column hole, 450: second air inlet hole, 460: oil inlet passage, 470: oil outlet passage,

[0050] 480: third sealing groove, 481: bottom sealing ring, 490: third sealing ring,

[0051] 500: micro pump, 501: fluid inlet, 502: fluid outlet, 503: vibrator,

[0052] 504: pump chamber, 505: metal conductive foil, 5051: first connecting section,

[0053] 5052: second connecting section, 5053: pressing surface,

[0054] 506: electrode column, 600: atomization chamber,

[0055] 700: atomization core assembly, 710: oil delivery pipe, 711: third oil delivery hole,

[0056] 712: sealing end, 713: opening, 720: oil guide sleeve, 730: heating wire, 740: type II electrode column; 750: exhaust port, 760: semi-permeable membrane. DETAILED DESCRIPTION

[0057] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0058] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific processes and examples of materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0059] Reference below Figure 1-Figure 21 An electronic cigarette 1000 according to an embodiment of the present invention is described.

[0060] like Figure 1 , Figure 2 , Figure 4 , Fig. 9 and Fig.13 As shown, the electronic cigarette 1000 according to an embodiment of the present invention includes: a housing 300, a mouthpiece 100, a smoke oil tank 200, a flexible membrane 212, a mounting base 400, a micro pump 500 and an atomizing core assembly 700 for atomizing the smoke oil.

[0061] Specifically, Figure 8As shown, both ends of the housing 300 are open, a first air inlet 301 is provided on the side wall of the housing 300, and the suction nozzle 100 is provided at one end of the housing 300, and the suction nozzle 100 has a smoke outlet 101. It is understandable that when the user smokes through the smoke outlet 101, the external air can enter the housing 300 through the first air inlet 301, so that the smoke oil can be discharged smoothly. In this way, it can be avoided that the pressure difference between the inside and the outside is too large, causing the cigarette butts to be unable to flow out.

[0062] like Figure 2-Figure 7 As shown, the smoke oil bin 200 is arranged in the shell 300, and the smoke oil bin 200 has a spaced-apart smoke duct 201 and an oil storage chamber 211, one end of the smoke duct 201 is connected to the smoke outlet 101, the bottom of the smoke oil bin 200 has a first oil delivery hole 203 connected to the oil storage chamber 211, the top of the smoke oil bin 200 has an oil injection hole 202 connected to the oil storage chamber 211, the oil storage chamber 211 has an open mouth on the side opposite to the first air inlet hole 301, the flexible membrane 212 blocks the open mouth, and the flexible membrane 212 and the oil storage bin define a flexible oil bag 210.

[0063] It can be understood that the flue 201 and the flexible oil capsule 210 are arranged on a smoke oil bin 200, and the flue 201 and the flexible oil capsule 210 are isolated, which realizes the separation of the smoke oil and the flue 201 while ensuring the compact structure, further preventing the smoke oil from being sucked into the mouth during the suction process, thereby improving the user experience.

[0064] like Figure 2 and Figure 9-11 As shown, the mounting base 400 is arranged at the other end of the housing 300, one end of the smoke oil bin 200 is connected to the mounting base 400, and the mounting base 400, the housing 300, the suction nozzle 100 and the smoke oil bin 200 define an atomization chamber 600 connected to the smoke duct 201, and the mounting base 400 has an oil inlet passage 460, one end of the oil inlet passage 460 has a second oil delivery hole 431 opposite to the first oil delivery hole 203, the second oil delivery hole 431 and the first oil delivery hole 203 are connected to the oil inlet passage 460, the other end of the oil inlet passage 460 has an oil inlet hole 411, and the mounting base 400 also has an oil outlet passage 470, and the oil outlet passage 470 is connected to the second oil delivery hole 431. 0 is separated from the oil inlet channel 460, one end of the oil outlet channel 470 has an oil outlet hole 412, and the other end of the oil outlet channel 470 has an oil guide hole 421. The bottom wall of the mounting base 400 is provided with a second air inlet hole 450 connected with the atomization chamber 600. The micro pump 500 is fixed on the mounting base 400. The micro pump 500 has a fluid inlet port 501 and a fluid outlet port 502 connected with the pump cavity 504. The fluid inlet port 501 is connected with the oil inlet hole 411, and the fluid outlet port 502 is connected with the oil outlet hole 412. The atomization core assembly 700 is arranged in the atomization chamber 600, and the atomization core assembly 700 is fixed on the mounting base 400.

[0065] It can be understood that when external air enters the housing 300 through the first air inlet hole 301 and squeezes the flexible mold, the flexible membrane 212 squeezes the tobacco oil in the flexible oil bag 210 to flow out of the flexible oil bag 210 from the first oil delivery hole 203, and enters the oil inlet channel 460 through the second oil delivery hole 431, and under the control of the micro pump 500, enters the pump chamber 504 through the oil inlet hole 411 and the fluid inlet port 501 in sequence, and then enters the oil outlet channel 470 through the fluid outlet port 502 and the oil outlet hole 412, and finally is discharged through the oil guide hole 421.

[0066] Among them, the oil inlet channel 460 and the oil outlet channel 470 are both arranged on the mounting base 400, which can increase and reduce the distance between the micro pump 500 and the atomization core assembly 700, thereby shortening the length of the flow channel, further improving the compactness of the internal structure of the electronic cigarette 1000, which is conducive to reducing the external dimensions of the electronic cigarette 1000, and there are fewer parts and components, which makes processing and manufacturing more difficult, thereby reducing the processing cost of the electronic cigarette 1000.

[0067] According to the electronic cigarette 1000 of the embodiment of the present invention, by arranging the oil tank 200, the micro pump 500, the atomizing core assembly 700, the oil inlet channel 460 and the oil outlet channel 470 on the mounting base 400, the compactness of the internal structure of the electronic cigarette 1000 can be improved, which is conducive to reducing the external dimensions of the electronic cigarette 1000, and there are fewer parts and the difficulty of processing and manufacturing, thereby reducing the processing cost of the electronic cigarette 1000. In addition, the flue 201 and the flexible oil capsule 210 are arranged on a oil tank 200, and the flue 201 and the flexible oil capsule 210 are isolated to achieve the separation of the oil and the flue 201, further preventing the oil from being sucked into the mouth during the suction process, thereby improving the user experience.

[0068] According to some embodiments of the present invention, Figure 2 and Figure 4 As shown, the end of the smoke oil bin 200 close to the suction nozzle 100 has a first sealing groove 230, and a first sealing ring 231 is arranged in the first sealing groove 230, and the smoke oil bin 200 and the suction nozzle 100 are sealed and connected via the first sealing ring 231. Thus, the seal between the smoke oil bin 200 and the suction nozzle 100 can be achieved, thereby preventing the airflow entering the housing 300 from the first air inlet 301 from leaking toward the suction nozzle 100, thereby ensuring that the user inhales smoke from the smoke outlet 101.

[0069] According to some embodiments of the present invention, Figure 2 and Figure 4As shown, the end of the smoke oil bin 200 close to the mounting base 400 has a second sealing groove 240 , a second sealing ring 241 is arranged in the second sealing groove 240 , and the smoke oil bin 200 and the housing 300 are sealed and connected via the second sealing ring 241 . It can be understood that the first air inlet 301 is connected to the external air and the smoke oil bin 200 to form a first airway, the micro pump 500 is connected to the flexible oil bag 210 and the atomizer core assembly 700, the second air inlet 450 is connected to the atomizer chamber 600, the flue 201 and the smoke outlet 101 to form a second airway, and the second sealing ring 241 isolates the first airway and the second airway. The first airway always maintains a balance between the air pressure in the smoke oil bin 200 and the external air pressure, ensuring that the smoke oil can continuously and stably enter the pump chamber 504 when the electronic cigarette 1000 is in use, and the electronic cigarette 1000 will not leak due to changes in external air pressure when it is not in use. During the suction process, the smoke oil in the flexible oil bag 210 is pressure-transported to the atomizer core assembly 700 by the micro pump 500 for heating and atomization, and negative pressure is formed in the atomizer chamber 600. Air enters the atomizer chamber 600 under the action of the negative pressure, and the aerosol generated by the atomization of the smoke oil is sent to the mouth along the second airway.

[0070] According to some embodiments of the present invention, Figure 5 and Fig. 9 As shown, a positioning boss 430 is provided on the top wall of the mounting base 400, and a limiting connection groove 220 corresponding to the positioning boss 430 is provided on the bottom wall of the smoke oil bin 200. It can be understood that the positioning boss 430 and the limiting connection groove 220 have a limiting effect on the connection between the mounting base 400 and the smoke oil bin 200, thereby not only improving the assembly efficiency of the mounting base 400 and the smoke oil bin 200, but also improving the installation accuracy of the mounting base 400 and the smoke oil bin 200.

[0071] According to some embodiments of the present invention, Figure 6 and Figure 7 As shown, when the flexible oil capsule 210 is not filled with smoke oil, the flexible film 212 is attached to the bottom wall of the oil storage chamber 211, and when the flexible oil capsule 210 is filled with smoke oil, the flexible oil capsule 210 is stopped against the inner wall of the shell 300. It can be understood that when the flexible oil capsule 210 is in an oil-free state, the flexible film 212 is attached to the bottom wall of the oil storage chamber 211, and when the flexible oil capsule 210 is full of oil, the flexible film 212 is squeezed by the smoke oil and accumulates toward the side away from the bottom wall of the oil storage chamber 211, and is limited by the shell 300 that is fitted with the smoke oil bin 200. During the use of the electronic cigarette 1000, as the smoke oil in the flexible oil capsule 210 is continuously consumed, in order to balance the external gas pressure, the flexible film 212 will gradually return to the initial state when there is no oil in the flexible oil capsule 210, that is, it is attached to the bottom wall of the oil storage chamber 211, ensuring that there is no smoke oil residue in the flexible oil capsule 210.

[0072] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the electronic cigarette 1000 further includes a sealing plug 250, which is detachably mounted in the oil filling hole 202. It is understandable that when the oil needs to be added to the flexible oil bag 210, the sealing plug 250 can be removed from the oil filling hole 202; when the oil is fully added, the sealing plug 250 can be installed in the oil filling hole 202, which can prevent the oil from leaking out of the oil filling hole 202 on the one hand, and maintain the air pressure in the flexible oil bag 210 on the other hand.

[0073] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the electronic cigarette 1000 further includes a third sealing ring 490, and the first oil delivery hole 203 and the second oil delivery hole 431 are sealed and communicated through the third sealing ring 490. Therefore, when the smoke oil flows from the first oil delivery hole 203 to the second oil delivery hole 431, no leakage occurs, thereby ensuring the reliability of the process of the smoke oil transitioning from the first oil delivery hole 203 to the second oil delivery hole 431.

[0074] According to some embodiments of the present invention, Figure 2 , Fig. 9 , Fig.11 and Fig.12 As shown, two spaced electrodes are provided on the side wall of the micro pump 500, and two spaced electrode column holes 440 are provided on the bottom wall of the mounting base 400, and an electrode column 506 is provided in each electrode column hole 440. The electronic cigarette 1000 also includes two metal conductive foils 505, and the two metal conductive foils 505 are matched with the two electrodes and the two electrode columns 506 in a one-to-one manner. The metal conductive foil 505 includes: a first connecting section 5051 and a second connecting section 5052, one side of the first connecting section 5051 is stopped against the electrode, and the other side of the first connecting section 5051 is stopped against the inner wall of the shell 300, the second connecting section 5052 is connected to the first connecting section 5051, one side of the second connecting section 5052 is stopped against the electrode column 506, and the extension direction of the second connecting section 5052 is perpendicular to the extension direction of the first connecting section 5051.

[0075] It is understandable that when installing the metal conductive foil 505 used to connect the electrodes of the micro pump 500 and the electrode column 506, the metal conductive foil 505 can be pressed to a position where it contacts the electrodes at both ends of the micro pump 500 by using the housing 300 to press the metal conductive foil 505 against the housing 300, thereby eliminating the need for welding and making installation easier. In one example of the present invention, the metal conductive foil 505 is formed into an L shape.

[0076] In some embodiments of the present invention, Fig.12As shown, the first connecting section 5051 has an arc section at one end away from the second connecting section 5052, and the arc section has a pressing surface 5053 protruding toward the electrode. It can be understood that the pressing surface 5053 facilitates the connection between the mounting base 400 and the housing 300, and facilitates the housing 300 to press the metal conductive foil 505 against the electrodes at both ends of the micro pump 500.

[0077] According to some embodiments of the present invention, Fig.13 and Fig.14 As shown, the atomizer core assembly 700 includes: an oil delivery pipe 710, an oil guide sleeve 720 and a heating wire 730. One end of the oil delivery pipe 710 has a third oil delivery hole 711 connected to the oil guide hole 421, and the other end of the oil delivery pipe 710 is closed. The peripheral wall of the oil delivery pipe 710 has an opening 713 that penetrates the oil delivery pipe 710 in the thickness direction of the oil delivery pipe 710, and the opening 713 extends along the axial direction of the oil delivery pipe 710. The oil guide sleeve 720 is sleeved on the oil delivery pipe 710, and the oil guide sleeve 720 wraps the opening 713. The heating wire 730 is wound on the outer peripheral wall of the oil guide sleeve 720, and there are multiple openings 713, and the multiple openings 713 are spaced apart in the circumferential direction of the oil delivery pipe 710.

[0078] In the related art, the electronic cigarette adopts the form of oil-conducting cotton core wrapped with metal heating wire. The oil-conducting cotton core wrapped with metal heating wire atomizer cannot get rid of the nature of passive oil conduction. When used with a micro pump, the oil storage and oil conduction characteristics of the cotton core itself reduce the reaction speed of the oil supply control system, making it difficult for the oil supply control system to accurately adjust and control the oil supply amount and oil supply rate to achieve the effect of immediate supply and consumption. According to the electronic cigarette of the present invention, the oil distribution is matched with the heat distribution through the oil delivery pipe 710, solving the problems of oil leakage and dry burning of the electronic cigarette.

[0079] In the present application, the atomizer core assembly 700 reacts quickly and is used in conjunction with the micro pump 500. The e-liquid can quickly reach the heating area, and the micro pump 500 can give full play to the pumping pressure of the oil and the regulation and control of the oil supply volume and oil supply rate. A feedback mechanism is introduced to achieve a dynamic balance between the supply and consumption of the e-liquid.

[0080] like Figure 17-19 As shown, in some embodiments of the present invention, the opening 713 on the oil delivery pipe 710 is slit-shaped, and the slit width is 0.01-2.1 mm.

[0081] When the smoke oil flows into the oil delivery pipe 710 and encounters a slit, the oil will first fill the slit under the action of the contact surface tension. The pressure required for the oil to continue to flow out of the slit is Δp1, and the pressure required for the oil to continue to flow forward without flowing out of the slit is Δp2.

[0082] generally

[0083] generally

[0084] λ1 is the resistance coefficient along the slit, e is the slit depth, h is the slit width, b is the slit length, λ2 is the resistance coefficient along the oil pipeline, d is the hydraulic diameter of the oil pipeline, ρ is the smoke oil density, v is the smoke oil flow rate, and Re is the Rayleigh number.

[0085] When Δp1>Δp2, the flow resistance out of the slit is greater than the resistance of flowing through the portion of the oil pipe 710 where the slit is located, and the smoke oil will flow along the oil pipe 710 toward the closed end of the oil pipe until it reaches the edge of the slit close to the closed end of the oil pipe 710. The fluid will compress the air between the edge of the slit close to the closed end of the oil pipe 710 and the closed end of the oil pipe 710, and the air pressure in the space will continue to rise, and the smoke oil will be forced to flow out of the slit. At this time, except for a very thin layer of smoke oil in contact with the inner wall of the slit, the flow velocity is evenly distributed in the slit, and the oil can be evenly discharged over a long axial distance of the oil pipe 710. When the heating wire 730 stops working, the micro pump 500 immediately stops supplying oil, and the temperature of the heating wire 730 does not drop immediately. The heating wire 730 has the problem of instant dry burning. This structure can avoid this problem. After the micro pump 500 stops working, the air compressed between the edge of the slit close to the closed end of the oil pipe 710 and the closed end of the oil pipe 710 presses some of the remaining oil out of the slit, so that some oil exists around the heating wire to avoid instant dry burning.

[0086] When the slit width is too small or the depth is too large, too little air will flow out of the slit and the heating wire will burn dry.

[0087] Based on the above discussion, the requirements are as follows: there is a distance between the closed end of the oil pipeline 710 and the open end close to the closed end of the oil pipeline, and the distance is between 0-50mm; the slit width is between 0.01mm-2.1mm, the slit depth is between 0.05mm-1.7mm, the slit length is greater than 0.1mm, and the slit length is less than the length of the oil pipeline; the inner diameter / hydraulic diameter of the oil pipeline is between 0.1mm-7mm.

[0088] In some embodiments of the present invention, there are one or more openings 713 , and the plurality of openings 713 are spaced apart in the circumferential direction of the oil delivery pipe 710 .

[0089] The opening 713 is slit-shaped, and the winding pitch of the spiral heating wire 730 varies according to the distribution density of the slits. Where the slits are densely distributed, the winding pitch of the heating wire 730 is small, that is, densely wound. Conversely, where the slits are sparsely distributed, the winding pitch of the heating wire 730 is large, that is, sparsely wound.

[0090] The area with more slit-shaped openings 713 has a larger flow rate of smoke oil, and more heat is needed to atomize it to avoid insufficient combustion. The density distribution of the heating wire matches the distribution of the slits. In principle, the heating wire is densely wound in the area with large flow rate (i.e., more slit-shaped openings 713 are distributed), and the heating wire is sparsely wound in the area with small flow rate (i.e., fewer slits are distributed).

[0091] like Fig. 20 and 21 As shown, according to some specific embodiments of the present invention, the closed end of the oil pipeline 710 is provided with an exhaust port 750 connected to the opening 713, and the end surface of the oil pipeline 710 facing the exhaust port 750 is provided with a semipermeable membrane 760, which covers the exhaust port 750 and allows gas to pass through but does not allow liquid to pass through. There are multiple exhaust ports 750, the shape of the semipermeable membrane 760 is the same as the cross-sectional shape of the oil pipeline, and the outer periphery of the semipermeable membrane 760 is connected to the outer periphery of the end surface of the oil pipeline.

[0092] That is to say, a plurality of exhaust ports 750 communicating with the slit-shaped opening 713 are provided at one closed end of the oil pipeline 710, and a semipermeable membrane 760 is provided at one closed end of the oil pipeline. The outer contour of the semipermeable membrane 760 is fixed to the oil pipeline, and the middle area is in close contact with the oil pipeline, so that gas can pass through the semipermeable membrane 760 but liquid cannot.

[0093] The semipermeable membrane 760 covers all the exhaust ports 750, and the air between the edge of the opening 713 close to the closed end of the oil pipe and the closed end of the oil pipe will be discharged through the semipermeable membrane 760, and the smoke oil will fill the entire oil pipe 710. The semipermeable membrane 760 will produce elastic deformation under the action of pressure. The semipermeable membrane 760 has elastic potential energy storage. When the heating wire 730 stops working, the micro pump 500 immediately stops supplying oil, and the semipermeable membrane 760 resumes deformation, releasing the elastic potential energy, and part of the smoke oil will flow out through the opening 713 and fill the area around the heating wire 730.

[0094] Specifically, the working principle of the present invention is: oil is injected into the flexible oil capsule 210 through the oil injection hole 202. After the oil is fully injected, the oil injection port 202 is sealed with a sealing plug 250. During the oil injection process, the oil must be ensured to fill the pump chamber 504 of the micro pump 500, so that the micro pump 500 can continuously and stably pump the oil. During operation, the oil in the flexible oil capsule 210 enters the pump chamber 504 through the first oil delivery hole 203, the second oil delivery hole 431, the oil inlet channel 460, the oil inlet hole 411, and the fluid inlet 501, and then reaches the heating area of ​​the heating wire 730 through the fluid outlet 502, the oil outlet 412, the oil outlet channel 470, the oil guide hole 421, the third oil delivery hole 711, the oblong hole 713 on the oil delivery pipe 710, and the oil guide sleeve 720 to generate heat and atomize. During inhalation, external air enters the atomizing chamber 700 through the second air inlet 450 and the air inlet pipe 451, and blows the aerosol formed by the atomization of the tobacco oil in the atomizing chamber 700 to the flue 201, and enters the mouth through the smoke outlet 101. It should be noted that when the tobacco oil enters the pump chamber 504 from the fluid inlet 501, the vibrator 503 protrudes outward, and when the tobacco oil is discharged from the pump chamber 504 from the fluid outlet 502, the vibrator 503 is concave inward.

[0095] Reference below Figure 1-Figure 16 An electronic cigarette 1000 according to a specific embodiment of the present invention is described. It is worth noting that the following description is only exemplary and intended to be used to explain the present invention, and cannot be understood as limiting the present invention.

[0096] The electronic cigarette 1000 includes a mouthpiece 100 and a smoke oil tank 200 , a housing 300 and a mounting base 400 that cooperate to form an atomization chamber 600 . The smoke oil tank 200 is integrally formed with a smoke duct 201 and a smoke storage cavity 211 .

[0097] A first sealing groove 230 is opened at the upper part of the smoke oil bin 200, and a first sealing ring 231 is arranged in the first sealing groove 230. The smoke oil bin 200 is tightly fitted and snap-fitted with the suction nozzle 100 and sealed by the first sealing ring 231. A second sealing groove 240 is opened at the lower part of the smoke oil bin 200, and a second sealing ring 241 is arranged in the second sealing groove 240. The smoke oil bin 200 is fitted with the outer shell 300 and sealed by the second sealing ring 241.

[0098] A flexible membrane 212 is attached to the open end surface of the oil storage chamber 211. The flexible membrane 212 can be combined with the oil storage chamber 211 by welding, pressing or other technical means to form a flexible oil bag 210. A limit connecting groove 220 and a first oil delivery hole 203 are opened at the bottom of the oil storage chamber 211. The first oil delivery hole 203 communicates with the flexible oil bag 210 and the limit connecting groove 220. A positioning boss 430 and a second oil delivery hole 431 are set on the mounting base 400. The positioning boss 430 is adapted to engage with the limit connecting groove 420. A third sealing ring 490 with a hole is set between the positioning boss 430 and the limit connecting groove 420, so that the second oil delivery hole 431 is sealed and connected with the first oil delivery hole 203 through the third sealing ring 490 and then connected to the flexible oil bag 210.

[0099] A first air inlet hole 301 is opened on the shell 300, and the first air inlet hole 301 can be composed of a single hole or multiple holes. The first air inlet hole 301 connects the external air and the smoke oil tank 200 to form a first air duct. A third sealing groove 480 is opened at the lower part of the mounting base 400, and a bottom sealing ring 481 is arranged in the third sealing groove 480. The lower part of the shell 300 is adapted to fit with the lower part of the mounting base 400 and is sealed by the bottom sealing ring 481.

[0100] A micro pump 500 is installed on one side of the mounting base 400, and an atomization core assembly 700 is installed on the other side. A second air inlet hole 450 and an electrode column hole 440 are opened on the lower bottom surface. An air inlet pipe 451 is arranged in the second air inlet hole 450. The lower part of the air inlet pipe 451 is limited, and the upper part extends to the atomization chamber 600 to prevent smoke oil or condensate from entering the battery assembly used in conjunction with the electronic cigarette 1000 through the second air inlet hole 450 and damaging the electronic components.

[0101] The micro pump 500 is connected to the flexible oil bag 210 and the atomizer core assembly 700, the second air inlet 450 is connected to the atomizer chamber 600, the flue 201 and the smoke outlet 101, forming a second airway, and the second sealing ring 241 isolates the first airway from the second airway. The first airway always maintains a balance between the air pressure in the oil tank 200 and the external air pressure, ensuring that the oil can continuously and stably enter the pump chamber when the electronic cigarette 1000 is in use. When the electronic cigarette 1000 is not in use, oil leakage will not occur due to changes in external air pressure. During the suction process, the oil in the flexible oil bag 210 is pressure-transported to the atomizer core assembly 700 by the micro pump 500 for heating and atomization, and negative pressure is formed in the atomizer chamber 600. Air enters the atomizer chamber 600 under the action of the negative pressure, and the aerosol generated by the atomization of the oil is delivered to the mouth along the second airway.

[0102] Specifically, Figures 4 to 7As shown, a flexible membrane 212 is attached to the entire outside of an open surface of the oil storage chamber 211, and the flexible membrane 212 cooperates with the oil storage chamber 211 to form a flexible oil bag 210. An oil filling hole 202 is opened on the upper non-open surface of the oil storage chamber 211, and a limiting connecting groove 220 and a first oil delivery hole 203 are opened on the lower non-open surface. A sealing plug 250 is provided to cooperate with the oil filling hole 202, and the first oil delivery hole 203 is connected to the flexible oil bag 210 and the limiting connecting groove 220.

[0103] When the flexible oil capsule 210 is in the oil-free state, the flexible membrane 212 is in contact with the bottom wall of the oil storage chamber 211. When the flexible oil capsule 210 is full of oil, the flexible membrane 212 is squeezed by the smoke oil and accumulates in the direction away from the bottom wall of the oil storage chamber 211, and is limited by the housing 300 that fits with the smoke oil bin 200. When the oil is full, the oil filling hole 202 is blocked with the sealing plug 250. During the use of the electronic cigarette 1000, as the smoke oil in the flexible oil capsule 210 is continuously consumed, in order to balance the external gas pressure, the flexible membrane 212 will gradually return to the initial state when there is no oil in the flexible oil capsule 210, that is, in contact with the bottom wall of the oil storage chamber 211, to ensure that there is no smoke oil residue in the flexible oil capsule 210.

[0104] like Fig. 9 and Fig.10 As shown, one side of the mounting base 400 is provided with a micro pump mounting surface 410, one side is provided with an atomizer core mounting surface 420, one side is provided with a positioning boss 430 and a second oil delivery hole 431, one side is provided with four electrode column holes 440 and a second air inlet hole 450, an oil inlet channel 460 and an oil outlet channel 470 are provided inside, the positioning boss 430 is adapted to fit with the limiting connecting groove 220, a third sealing ring 490 with a hole is provided between the two, and the second oil delivery hole 431 is sealed and connected to the first oil delivery hole 203 and then connected to the flexible oil bag 210.

[0105] An oil inlet hole 411, an oil outlet hole 412 and a positioning flange 414 are provided on the micro pump mounting surface 410. The micro pump 500 has a positioning hole corresponding to the positioning flange 414 and is adapted to be engaged with the micro pump mounting surface 410. The fluid inlet 501 of the micro pump 500 is communicated with the oil inlet hole 411. The second oil delivery hole 431 is also communicated with the oil inlet hole 411 through the oil inlet passage 460. The fluid outlet 502 of the micro pump 500 is communicated with the oil outlet hole 412. The atomizer core mounting surface 420 has an oil guide hole 421, which is communicated with the oil outlet hole 412 through the oil outlet passage 470. Concentric annular grooves 413 are respectively provided on the outer edges of the oil inlet hole 411 and the oil outlet hole 412. Sealing rings are installed in the grooves. The sealing rings can isolate the oil inlet hole 411 and the oil outlet hole 412 to prevent oil leakage.

[0106] The electrodes at both ends of the micro pump 500 are respectively led to the lower limit surface notch 415 of the micro pump mounting surface 410 of the mounting base 400 through two "L"-shaped metal conductive foils 505. After the micro pump 500 is installed on the micro pump mounting surface 410, the second connecting sections 5052 of the two "L"-shaped metal conductive foils 505 are respectively inserted into the lower limit surface notch 415 of the micro pump mounting surface 410, and the first connecting section 5051 is close to the electrodes at both ends of the micro pump 500. When the electronic cigarette 1000 is assembled, the housing 300 presses the first connecting section 5051 against the electrodes at both ends of the micro pump 500 to form an electrical connection.

[0107] An arc pressing surface 5053 is provided at the contact point between the first connecting section 5051 of the two "L"-shaped metal conductive foils 505 and the electrode of the micro pump 500, so as to facilitate the connection between the mounting base 400 and the housing 300, and to facilitate the housing 300 to press the two "L"-shaped metal conductive foils 505 against the electrodes at both ends of the micro pump 500.

[0108] The atomization core assembly 700 is composed of an oil delivery pipe 710, an oil guide sleeve 720 and a heating wire 730. The oil delivery pipe 710 can be a metal pipe, a hard heat-resistant plastic pipe or other heat-resistant hard material pipe. The oil guide sleeve 720 is a glass fiber braided tube, an oil-conducting cotton yarn braided tube or other heat-resistant material pipe with oil-conducting and oil-permeable properties. The oil guide sleeve 720 is tightly fitted on the outer edge of the oil delivery pipe 710, and the heating wire 730 is tightly wound on the outer edge of the oil guide sleeve 720. A third oil delivery hole 711 is opened at one end of the oil delivery pipe 710, and the third oil delivery hole 711 is sealed and connected with the oil guide hole 421. The other end of the oil delivery pipe 710 is blocked, and a plurality of openings 713 are opened on the wall of the oil delivery pipe 710 corresponding to the winding area of ​​the heating wire 730 along the axial direction of the oil delivery pipe 710.

[0109] Electrode columns are sealed and installed in the electrode column holes 440, of which two Type I electrode columns 506 are pressed against the second connecting sections 5052 of the two "L"-shaped metal conductive foils 505 to form an electrical connection, and the other two Type II electrode columns 760 are electrically connected to the electrodes at both ends of the heating wire 730 of the atomizer core assembly 700.

[0110] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0111] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0112] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electronic cigarette, characterized in that: include: A shell, wherein both ends of the shell are open and a first air inlet hole is provided on a side wall of the shell; A suction nozzle, the suction nozzle is arranged at one end of the shell, and the suction nozzle has a smoke outlet; A smoke oil bin, the smoke oil bin is arranged in the shell, the smoke oil bin has a smoke duct and an oil storage cavity separated from each other, one end of the smoke duct is connected to the smoke outlet, the bottom of the smoke oil bin has a first oil delivery hole connected to the oil storage cavity, the top of the smoke oil bin has an oil injection hole connected to the oil storage cavity, and the oil storage cavity has an open opening on a side opposite to the first air inlet hole; A flexible membrane, the flexible membrane blocks the open port, and the flexible membrane and the oil storage tank define a flexible oil bag; A mounting base, wherein the mounting base is arranged at the other end of the shell, one end of the smoke oil bin is connected to the mounting base, the mounting base and the shell, the suction nozzle and the smoke oil bin define an atomization chamber connected to the smoke duct, the mounting base has an oil inlet passage, one end of the oil inlet passage has a second oil delivery hole opposite to the first oil delivery hole, the second oil delivery hole is connected to the first oil delivery hole, the other end of the oil inlet passage has an oil inlet hole, the mounting base also has an oil outlet passage, the oil outlet passage is spaced apart from the oil inlet passage, one end of the oil outlet passage has an oil outlet hole, the other end of the oil outlet passage has an oil guide hole, and a second air inlet hole connected to the atomization chamber is provided on the bottom wall of the mounting base; A micro pump, the micro pump is fixed on the mounting base, the micro pump has a fluid inlet and a fluid outlet connected to the pump chamber, the fluid inlet is connected to the oil inlet, and the fluid outlet is connected to the oil outlet; An atomizer core assembly for atomizing the e-liquid, the atomizer core assembly being arranged in the atomizer chamber and fixed on the mounting base, and the atomizer core assembly comprising: An oil delivery pipe, one end of the oil delivery pipe has a third oil delivery hole connected to the oil guide hole, the other end of the oil delivery pipe is closed, the peripheral wall of the oil delivery pipe has an opening penetrating the oil delivery pipe in the thickness direction of the oil delivery pipe, the opening extends along the axial direction of the oil delivery pipe, and the opening on the oil delivery pipe is slit-shaped; or, the closed end of the oil delivery pipe is provided with an exhaust port connected to the opening, a semipermeable membrane is provided on the end surface of the oil delivery pipe facing the exhaust port, the semipermeable membrane covers the exhaust port, and the semipermeable membrane allows gas to pass through but does not allow liquid to pass through; An oil guide sleeve, wherein the oil guide sleeve is sleeved on the oil delivery pipe and the oil guide sleeve wraps the opening; A heating wire is wound around the outer peripheral wall of the oil guide sleeve.

2. The electronic cigarette according to claim 1, characterized in that: When the flexible oil bag is not filled with tobacco oil, the flexible film is in contact with the bottom wall of the oil storage cavity, and when the flexible oil bag is filled with tobacco oil, the flexible oil bag abuts against the inner wall of the shell.

3. The electronic cigarette according to claim 1, characterized in that: The side wall of the micro pump is provided with two spaced electrodes, the bottom wall of the mounting base is provided with two spaced electrode column holes, each of the electrode column holes is provided with an electrode column, the electronic cigarette further includes two metal conductive foils, the two metal conductive foils are matched with the two electrodes and the two electrode columns in a one-to-one correspondence, and the metal conductive foils include: a first connecting section, wherein one side of the first connecting section abuts against the electrode, and the other side of the first connecting section abuts against the inner wall of the housing; The second connecting segment is connected to the first connecting segment, one side of the second connecting segment abuts against the electrode column, and an extending direction of the second connecting segment is perpendicular to an extending direction of the first connecting segment.

4. The electronic cigarette according to claim 1, characterized in that: The slit width is 0.01-2.1 mm.

5. The electronic cigarette according to claim 1, characterized in that: There are one or more openings, and the plurality of openings are arranged at intervals in the circumferential direction of the oil pipeline.

6. The electronic cigarette according to claim 1, characterized in that: There are multiple exhaust ports, the shape of the semipermeable membrane is the same as the cross-sectional shape of the oil pipeline, and the outer peripheral edge of the semipermeable membrane is connected to the outer peripheral edge of the end face of the oil pipeline.

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