Cigarette cartridge with closed oil bin oil pressure balance structure and electronic cigarette

Abstract

The invention provides a smoke cartridge with a closed oil bin oil pressure balance structure and an electronic cigarette. The smoke cartridge comprises an upper sealing piece and a lower sealing piece which are arranged in an inner cavity of a shell and are integrally made of elastic materials; the upper sealing element sleeves the upper end of the atomization assembly and is in sealed abutting connection with the atomization assembly; the outer side surface of the upper sealing element is in sealed abutting connection with the inner wall surface of the inner cavity of the shell; the outer side face of the lower sealing piece abuts against the inner wall face of the inner cavity of the shell in a sealed mode. The upper sealing piece, the lower sealing piece, the outer side face of the outer steel pipe and the inner wall face of the inner cavity jointly define a completely-closed oil storage bin. Atomized liquid is injected into the oil storage bin after the lower sealing piece is punctured through oil injection equipment, air is squeezed out and discharged to the atomization center hole through the oil guide cotton, the punctured position is blocked by the lower sealing piece through elastic recovery after oil injection, the oil storage bin is in a negative oil pressure state, and the oil guide cotton is in an oil lubricating state. According to the totally-enclosed oil storage bin, air is exhausted through oil pressure to form air pressure balance, the purpose of preventing oil leakage is achieved through atmospheric pressure, and tests such as negative pressure and cold and hot impact are met.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic atomization devices, and more specifically, relates to a cigarette cartridge and an electronic cigarette with a closed oil tank oil pressure balance structure. Background Art

[0002] E-cigarettes, a new electronic product that mimics cigarettes, are becoming increasingly popular among consumers, especially young people. A common type of e-cigarette on the market currently uses cartridges. These cartridges typically consist of a hollow oil reservoir and an atomizer assembly. The atomizer assembly typically includes a cotton pad for storing the atomized liquid (e.g., e-liquid) and an atomizer core for heating the atomized liquid. The cartridges are also typically equipped with an inlet port for oil injection. Before shipment, e-cigarettes undergo a series of tests, such as high-altitude negative pressure, thermal shock, and simulated transportation. However, with existing cartridge designs, after oil is injected through the inlet port, during negative pressure and thermal shock tests, environmental changes can cause the air pressure in the oil reservoir to increase, squeezing the atomized liquid out of the oil-conducting cotton pads of the atomizer core, resulting in oil leakage. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a cigarette cartridge with a closed oil tank oil pressure balance structure to solve the above-mentioned technical problems existing in the prior art.

[0004] To achieve the above-mentioned purpose, the technical solution adopted in this application is to provide a cigarette cartridge with a closed oil tank oil pressure balance structure for electronic cigarettes, the cigarette cartridge with a closed oil tank oil pressure balance structure comprising:

[0005] The shell has a hollow inner cavity with an opening at the bottom and an air passage in the middle of the shell, and the air passage is isolated from the inner cavity;

[0006] The atomizer assembly includes an atomizer core, oil-storage cotton, and an outer steel tube, all of which are arranged in a cylindrical shape from top to bottom. The atomizer core, oil-storage cotton, and outer steel tube are sequentially arranged from the inside to the outside. The atomizer core includes a heating mesh and oil-guide cotton. The inner side of the atomizer core forms an atomization center hole connected to the airway; and

[0007] A sealing assembly is built into the inner cavity of the housing and includes an upper sealing member and a lower sealing member integrally made of elastic material; the upper sealing member is sleeved on the upper end of the atomizer assembly and is in sealing contact with the atomizer assembly, and the outer side surface of the upper sealing member is in sealing contact with the inner wall surface of the inner cavity of the housing; the lower sealing member is in sealing contact with the lower end of the atomizer assembly, and the outer side surface of the lower sealing member is in sealing contact with the inner wall surface of the inner cavity of the housing;

[0008] Among them, the cigarette cartridge includes an unfilled state and an oiled state; in the unfilled state, the upper seal, the lower seal, the outer side surface of the outer steel pipe and the inner wall surface of the inner cavity together form a completely enclosed oil storage tank; the atomized liquid of the electronic cigarette is injected into the oil storage tank after piercing the lower seal through the oil filling device, and the air in the oil storage tank is displaced by the atomized liquid and discharged from the oil guide cotton to the atomization center hole through the atomization component. After the oil filling device is withdrawn, the lower seal blocks the puncture through elastic recovery, so that the cigarette cartridge is in the oil-filled state, and the oil storage tank is in a negative oil pressure state, and the oil guide cotton is in an oil-lubricated state.

[0009] Optionally, the cigarette cartridge with a closed oil tank oil pressure balance structure also includes a bottom cover, which is detachably connected to the bottom end of the shell and covers the lower opening of the inner cavity of the shell; the lower sealing member is sleeved on the upper end of the bottom cover; an oil filling hole is provided on the bottom cover, and when the cigarette cartridge is in an un-oiled state, the lower sealing member seals and covers the oil filling hole toward the upper opening of the upper sealing member.

[0010] Optionally, a first accommodating groove with an upper opening and a second accommodating groove with a lower opening are formed on the lower sealing member; the lower end of the atomizing core assembly is adapted to be inserted into the first accommodating groove; the second accommodating groove is arranged around the periphery of the first accommodating groove, and a bottom cover convex portion corresponding to the shape of the second accommodating groove is convexly provided on the top surface of the bottom cover, and the bottom cover convex portion is adapted to be inserted into the second accommodating groove; the oil filling hole is arranged on the bottom cover convex portion and is arranged to be through-through from top to bottom.

[0011] Optionally, a plurality of annular first sealing ribs are convexly provided on the outer annular surface of the lower sealing member, and the plurality of first sealing ribs are arranged at intervals in the vertical direction, and the lower sealing member is elastically sealed against the inner wall surface of the inner cavity of the housing through the first sealing ribs;

[0012] A plurality of annular second sealing ribs are protruding from the inner wall surface of the first accommodating groove, and the plurality of second sealing ribs are arranged at intervals in the up and down directions. The lower sealing member is elastically sealed against the outer side surface of the lower end of the outer steel pipe through the second sealing ribs.

[0013] Optionally, the top surface of the upper seal is elastically fitted with the inner wall surface of the inner cavity of the shell, and a third accommodating groove with a lower opening is provided on the bottom surface of the upper seal, and the upper end of the atomizer assembly is adapted to be inserted into the third accommodating groove; the top surface of the upper seal is provided with a first through hole located below the airway, and the airway, the first through hole, the third accommodating groove and the atomizer center hole are connected in sequence in the up and down directions.

[0014] Optionally, a plurality of annular third sealing ribs are convexly provided on the outer annular surface of the upper sealing member, and the plurality of third sealing ribs are arranged at intervals in the vertical direction, and the upper sealing member is elastically sealed against the inner wall surface of the inner cavity of the housing through the third sealing ribs;

[0015] A plurality of annular fourth sealing ribs are convexly provided on the inner wall surface of the third accommodating groove, and the plurality of fourth sealing ribs are arranged at intervals in the up and down directions. The upper sealing member realizes elastic sealing contact with the outer side surface of the upper end of the outer steel pipe through the fourth sealing ribs.

[0016] Optionally, the cigarette cartridge with a closed oil tank oil pressure balance structure also includes oil-absorbing cotton and an isolating member both located inside the outer steel tube. The oil-absorbing cotton is located above the oil-storing cotton, and the isolating member is clamped between the oil-absorbing cotton and the oil-storing cotton to isolate the oil-storing cotton and the oil-absorbing cotton.

[0017] Optionally, 6 to 8 oil inlet holes are evenly spaced along the circumference of the outer steel pipe.

[0018] Optionally, the density of the oil storage cotton is 0.09-0.15g / cm3.

[0019] The present application also proposes an electronic cigarette, which includes a cigarette cartridge with a closed oil tank oil pressure balance structure as described above.

[0020] The beneficial effect of the cigarette cartridge with a closed oil tank oil pressure balance structure provided by the present application is that: since the upper seal can achieve a sealed connection with the upper end of the atomizer assembly and the inner cavity of the shell, the lower seal can achieve a sealed connection with the lower end of the atomizer assembly and the inner cavity of the shell, thereby forming a completely sealed oil storage tank. In this way, the pressure difference balance inside and outside the oil tank can be maintained by completely sealing the oil storage tank; when filling oil, the atomized liquid, i.e., the smoke oil, can be forced into the oil storage tank by piercing the lower seal with an oil filling device, and then the air inside the oil storage tank is discharged from the oil guide cotton of the atomizer core to the atomizer center hole by oil pressure to achieve external discharge; in addition, when filling oil, a negative oil pressure is formed in the oil storage tank and the oil guide cotton is ensured to be in an oil-lubricated state, thereby achieving a balance between oil guide and oil sealing, thereby maintaining the oil pressure balance of the atomizer core. This sealed oil-filled oil storage tank forms a negative oil pressure, so that the external air pressure cannot directly act on the oil storage tank, forming an air pressure balance. During the negative pressure and hot and cold shock tests, the electronic cigarette can avoid the increase in air pressure in the oil storage tank due to environmental changes, which may cause the atomized liquid to squeeze out the oil guide cotton and cause oil leakage. That is, the present application can achieve the purpose of preventing oil leakage by utilizing atmospheric pressure through the sealed oil filling method of the completely sealed oil storage tank, thereby enabling the electronic cigarette with the cigarette cartridge to smoothly pass the negative pressure and hot and cold shock tests, enhancing the anti-leakage performance of the electronic cigarette in various environments, especially high-altitude negative pressure, high temperature, low temperature, high and low temperature, and transportation environments, which is conducive to improving the overall safety of the electronic cigarette. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1A schematic diagram of the structure of a cigarette cartridge with a closed oil tank oil pressure balance structure provided in one embodiment of the present application;

[0023] Figure 2 A top view of a cigarette cartridge with a closed oil tank and oil pressure balancing structure provided in one embodiment of the present application;

[0024] Figure 3 for Figure 2 A cross-sectional view along the S1-S1 direction;

[0025] Figure 4 An exploded view of a cigarette cartridge with a closed oil tank and oil pressure balance structure provided in one embodiment of the present application.

[0026] Description of Figure Numbers:

[0027] Label name Label name 100 shell 110 airway 210 Atomizer core 220 Oil storage cotton 230 Outer steel pipe 211 Heating mesh 212 Oil-conducting cotton 240 Atomization center hole 310 Upper seal 320 Lower seal 400 nozzle 250 electrode 231 Oil inlet 260 bottom cover 261 Oil filling hole 321 Second through hole 262 The third through hole 270 retaining ring 264 Air trough 322 First accommodating groove 323 Second accommodating groove 265 Bottom cover convex part 324 First sealing rib 325 Second sealing rib 311 The third accommodating groove 312 First through hole 313 Fourth annular groove 314 Bump 315 The third sealing rib 316 Fourth sealing rib 317 Fourth accommodating groove 221 Oil-absorbing cotton 222 Isolators 120 Oil storage tank DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0029] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0030] It should also be noted that the directional terms such as left, right, up and down in the embodiments of the present application are merely relative concepts or are based on the normal use status of the product, and should not be considered as restrictive.

[0031] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0033] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0034] The following describes in detail embodiments of the present application, 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 application, and should not be construed as limiting the present application.

[0035] The embodiment of the present application provides a cigarette cartridge with a closed oil tank and oil pressure balance structure.

[0036] See also Figures 1 to 4In one embodiment, the cigarette cartridge with a closed oil tank oil pressure balancing structure is used for an electronic cigarette. The cigarette cartridge with a closed oil tank oil pressure balancing structure includes a shell 100, an atomizer assembly, and a sealing assembly. The shell 100 is internally formed with a hollow inner cavity with an opening at the bottom and an airway 110 located in the middle of the shell 100, and the airway 110 is isolated from the inner cavity. The atomizer assembly includes an atomizer core 210, an oil storage cotton 220, and an outer steel pipe 230, all of which are cylindrical and pass through from top to bottom. The atomizer core 210, the oil storage cotton 220, and the outer steel pipe 230 are sequentially arranged from the inside to the outside; the atomizer core 210 includes a heating mesh 211 and an oil guide cotton 212, and the inner side surface of the atomizer core 210 forms an atomizer center hole 240 connected to the airway 110. The sealing assembly is built into the inner cavity of the shell 100, and includes an upper seal 310 and a lower seal 320 made of an elastic material in one piece; the upper seal 310 is mounted on the upper end of the atomizer assembly and is sealed against the atomizer assembly, and the outer side surface of the upper seal 310 is sealed against the inner wall surface of the inner cavity of the shell 100; the lower seal 320 is sealed against the lower end of the atomizer assembly, and the outer side surface of the lower seal 320 is sealed against the inner wall surface of the inner cavity of the shell 100. Here, the cigarette cartridge includes two states: an unfilled state and an oil-filled state. In the unfilled state, that is, when no atomized liquid is stored in the oil storage tank 120 or the atomized liquid is exhausted, the upper seal 310, the lower seal 320, the outer side surface of the outer steel pipe 230 and the inner wall surface of the inner cavity together form a completely enclosed oil storage tank 120. When the cigarette cartridge needs to be filled with oil, the atomized liquid of the electronic cigarette is injected into the oil storage tank 120 after piercing the lower seal 320 through the oil filling device. The air in the oil storage tank 120 is displaced by the atomized liquid and discharged from the oil guide cotton 212 to the atomization center hole 240 through the atomization component. After the oil filling device is withdrawn, the lower seal 320 elastically recovers to block the puncture point, so that the cigarette cartridge is in an oil-filled state, and the oil storage tank 120 is in a negative oil pressure state, and the oil guide cotton 212 is in an oil-lubricated state.

[0037] Based on this design, in this embodiment, the upper seal 310 can achieve a sealed connection with the upper end of the atomizer assembly and the inner cavity of the housing 100, while the lower seal 320 can achieve a sealed connection with the lower end of the atomizer assembly and the inner cavity of the housing 100, thereby forming a completely sealed oil storage tank 120. Thus, by completely sealing the oil storage tank 120, a pressure balance between the inside and outside of the oil storage tank is maintained. During oil filling, the atomized liquid, i.e., e-liquid, can be forcibly squeezed into the oil storage tank 120 by piercing the lower seal 320 with an oil filling device. The air inside the oil storage tank 120 is then expelled through the oil guide cotton 212 of the atomizer core 210 to the atomizer center hole 240 for external discharge. Furthermore, during oil filling, a negative oil pressure is generated within the oil storage tank 120, ensuring that the oil guide cotton 212 is lubricated, thereby achieving a balance between oil guiding and oil sealing, thereby maintaining oil pressure balance in the atomizer core 210. The sealed oil-filled oil storage tank 120 forms a negative oil pressure, so that the external air pressure cannot directly act on the oil storage tank 120, forming an air pressure balance. During the negative pressure and thermal shock tests, the electronic cigarette can avoid the increase in air pressure in the oil storage tank 120 due to environmental changes, which may cause the atomized liquid to squeeze out the oil guide cotton 212 and cause oil leakage. That is, the present application can achieve the purpose of preventing oil leakage by utilizing atmospheric pressure through the sealed oil filling method of the completely sealed oil storage tank 120, thereby enabling the electronic cigarette with the cigarette cartridge to successfully pass the negative pressure and thermal shock tests, thereby enhancing the anti-leakage performance of the electronic cigarette in various environments, especially high-altitude negative pressure, high temperature, low temperature, high and low temperature, and transportation environments, and is conducive to improving the overall safety of the electronic cigarette.

[0038] It should be noted here that the cigarette cartridge with a closed oil tank oil pressure balance structure is mainly suitable for pre-filled oil (clear oil type) electronic cigarettes. Electronic cigarettes with this cigarette cartridge are more likely to pass tests such as negative pressure and hot and cold shock. In addition, a suction nozzle 400 is provided at the top of the cigarette cartridge, and the opening of the suction nozzle 400 is integrally connected to the airway 110 located below it. The electronic cigarette also includes key components such as batteries, and the atomization assembly also includes an electrode 250, etc., wherein one end of the lead of the electrode 250 is connected to the heating mesh 211 of the atomization core 210. When the cigarette cartridge is installed on the electronic cigarette, the other end of the lead of the electrode 250 is electrically connected to the battery through a conductive connecting component.

[0039] Furthermore, if Figure 4As shown, the outer steel tube 230 is provided with a plurality of oil inlet holes 231. These oil inlet holes 231 are arranged at intervals along the circumference of the lower portion of the outer steel tube 230, and their positions are as close as possible to the bottom of the oil reservoir, so that as much atomized liquid as possible can enter the oil storage cotton 220 through the oil inlet holes 231. The outer steel tube 230 is provided with 6 to 8 oil inlet holes evenly spaced along the circumference, and the density of the oil storage cotton 220 is preferably 0.09-0.15g / cm3. Here, by controlling the size and number of the oil inlet holes 231 on the outer steel tube 230, combined with controlling the density of the oil storage cotton 220, a balance between oil intake and oil retention can be achieved. Of course, by controlling the density of the oil storage cotton 220 and the viscosity of the atomized liquid, it is possible to prevent the atomized liquid from leaking due to gravity in the oil storage cotton 220 and the oil guide cotton 212, thereby further improving the anti-leakage performance of the electronic cigarette.

[0040] See also Figure 3 and Figure 4 In this embodiment, the cigarette cartridge with a closed oil tank oil pressure balance structure further includes a bottom cover 260, which is detachably connected to the bottom end of the shell 100 and covers the lower opening of the inner cavity of the shell 100; the lower sealing member 320 is sleeved on the upper end of the bottom cover 260; an oil filling hole 261 is provided on the bottom cover 260, and when the cigarette cartridge is in an unfilled state, the lower sealing member 320 seals the oil filling hole 261 toward the upper opening of the upper sealing member 310, so that the oil storage bin 120 can be ensured to be completely filled. Sealed state; when oil needs to be injected, the oil injection device can be used to pierce the lower seal 320 from the oil injection hole 261. At this time, since the lower seal 320 is made of an elastic material, the lower seal 320 can tightly wrap the needle of the oil injection device at the piercing point. After oil injection, the oil injection device is withdrawn from the oil injection hole 261, and the lower seal 320 will be re-sealed at the piercing point due to the elastic recovery effect of the elastic material, thereby achieving a completely sealed oil storage tank 120 oil injection process. In addition, a second through hole 321 is provided in the middle of the lower seal 320, which runs vertically through it. A third through hole 262 is also provided on the bottom cover 260 at a position corresponding to the second through hole 321. In the direction from top to bottom, the suction nozzle 400, the airway 110, the atomization center hole 240, the second through hole 321 and the third through hole 262 are connected in sequence. The bottom surface of the bottom cover 260 is also provided with a wire inlet and a clearance groove 264. The lead wires of the electrode 250 pass through the lower seal 320, are routed through the clearance groove 264, and then extend out of the bottom cover 260 through the wire inlet. Of course, because the lower seal 320 is made of an elastic material, when the lead wires of the electrode 250 pass through the lower seal 320, the connection between the two can also be effectively sealed.

[0041] Furthermore, if Figure 3 and Figure 4As shown, in this embodiment, the lower seal 320 is formed with a first accommodating groove 322 with an upper opening and a second accommodating groove 323 with a lower opening. The lower end of the atomizer core 210 assembly fits into the first accommodating groove 322. The second accommodating groove 323 is arranged around the periphery of the first accommodating groove 322. The top surface of the bottom cover 260 is provided with a bottom cover protrusion 265 corresponding in shape to the second accommodating groove 323, which fits into the second accommodating groove 323. The oil filling hole 261 is provided on the bottom cover protrusion 265 and extends vertically through it. It can be understood that the provision of the first accommodating groove 322 facilitates the positioning and assembly of the lower end of the atomizer assembly. By fitting the lower end of the atomizer assembly into the first accommodating groove 322, the sealing of the lower seal 320 against the lower end of the atomizer assembly is further ensured. Of course, the cooperation between the first receiving groove 322 and the bottom cover protrusion 265 and the provision of the second receiving groove 323 can also enable the lower sealing member 320 to be more firmly sleeved on the bottom cover 260 .

[0042] Furthermore, if Figure 3 and Figure 4 As shown, in this embodiment, the outer annular surface of the lower seal 320 is provided with multiple annular first sealing ribs 324, which are arranged at intervals in the vertical direction. These first sealing ribs 324 enable the lower seal 320 to elastically seal against the inner wall of the inner cavity of the housing 100. This ensures an effective seal between the lower seal 320 and the inner wall of the lower portion of the housing 100 via the annular first sealing ribs 324, thereby ensuring complete sealing of the oil storage tank 120 and smooth oil filling. The vertically spaced arrangement of the multiple first sealing ribs 324 significantly enhances sealing performance. Similarly, the inner wall of the first accommodating groove 322 is provided with multiple annular second sealing ribs 325, which are arranged at intervals in the vertical direction. These second sealing ribs 325 enable the lower seal 320 to elastically seal against the outer side surface of the lower end of the outer steel pipe 230. This effectively seals the lower seal and the lower end of the outer steel tube 230. The arrangement of multiple second sealing ribs 325 spaced apart vertically also effectively improves the sealing performance, ensuring that oil leakage does not occur at the connection between the lower seal 320 and the lower end of the atomizer assembly. Furthermore, a retaining ring 270 is provided within the first accommodating groove 322 at the lower end of the oil-storing cotton 220. This retaining ring 270, through its outer and inner ring surfaces riveted to the lower end of the outer steel tube 230 and the lower end of the atomizer core 210, respectively, effectively secures the outer steel tube 230 and the atomizer core 210.

[0043] Furthermore, if Figure 3 and Figure 4As shown, in this embodiment, the top surface of the upper seal 310 is elastically fitted with the inner wall surface of the inner cavity of the housing 100, and a third accommodating groove 311 with a lower opening is provided on the bottom surface of the upper seal 310. The upper end of the atomizer assembly is adapted to be inserted into the third accommodating groove 311. Here, the provision of the third accommodating groove 311 is not only conducive to the assembly convenience of the upper end of the atomizer assembly, but also can further improve the sealing performance here by the adaptation and insertion of the upper end of the atomizer assembly and the third accommodating groove 311. The top surface of the upper seal 310 is provided with a first through hole 312 located below the airway 110. The airway 110, the first through hole 312, the third accommodating groove 311 and the atomizer center hole 240 are sequentially connected in the up and down directions, so that the smoke mixed with the outside air can be smoothly sucked out along this channel. Specifically, for the sake of convenience in holding and beautiful appearance, the connection between the upper part of the shell 100 and the suction nozzle 400 is designed in an arc-shaped design. Correspondingly, the top surface of the upper seal 310, that is, the surface that elastically fits with the inner wall of the inner cavity at that location, is also designed in an arc-shaped design. Of course, in other embodiments, the top surface of the upper seal 310 may not be adapted to the shape of the corresponding inner wall of the inner cavity, and only a partial area needs to be in contact with it. However, in this embodiment, the sealing performance of the upper seal 310 can be further improved by adapting and elastically fitting the top surface of the upper seal 310 to the shape of the corresponding inner wall of the inner cavity.

[0044] Furthermore, if Figure 3 and Figure 4 As shown, in this embodiment, a plurality of annular third sealing ribs 315 are convexly provided on the outer annular surface of the upper seal 310, and the plurality of third sealing ribs 315 are arranged at intervals in the vertical direction. The upper seal 310 realizes elastic sealing contact with the inner wall surface of the inner cavity of the shell 100 through the third sealing ribs 315. A plurality of annular fourth sealing ribs 316 are convexly provided on the inner wall surface of the third accommodating groove 311, and the plurality of fourth sealing ribs 316 are arranged at intervals in the vertical direction. The upper seal 310 realizes elastic sealing contact with the outer side surface of the upper end of the outer steel pipe 230 through the fourth sealing ribs 316. It can be understood that, similar to the first sealing rib 324 and the second sealing rib 325, the third sealing rib 315 and the fourth sealing rib 316 also have the function of realizing elastic sealing between the lower seal 320 and the inner wall of the shell 100 and the upper end of the atomizer assembly, and can further effectively improve the sealing performance. In addition, a fourth accommodating groove 317 is provided in the middle of the top surface of the upper sealing member 310. The first through hole 312 is provided at the bottom of the fourth accommodating groove 317. The lower end of the pipe forming the airway 110 in the inner cavity of the housing 100 is adapted to be inserted into the fourth accommodating groove 317. The fourth accommodating groove 317 is also provided with a plurality of annular sealing ribs spaced apart vertically. It can be understood that this arrangement not only facilitates the positioning and assembly between the upper sealing member 310 and the airway 110, but also enhances the seal between the lower end of the pipe forming the airway 110 and the upper sealing member 310, thereby preventing smoke from escaping through this gap.

[0045] It should also be noted that if Figure 3 and Figure 4 As shown, in this embodiment, the smoke cartridge with a closed oil tank oil pressure balance structure also includes an oil-absorbing cotton 221 and an isolating member 222, both located inside the outer steel tube 230. The oil-absorbing cotton 221 is located above the oil-storing cotton 220, and the isolating member 222 is sandwiched between the oil-absorbing cotton 221 and the oil-storing cotton 220 to isolate the oil-storing cotton 220 from the oil-absorbing cotton 221. Here, when the smoke cartridge with a closed oil tank oil pressure balance structure is in an inverted state, a very small amount of atomized liquid overflowing from the oil-storing cotton 220 under the action of gravity can be absorbed by the oil-absorbing cotton 221, thereby effectively preventing oil leakage when the smoke cartridge is inverted. The isolating member 222 is preferably, but not limited to, made of silicone material. Its main function is to isolate the oil-storing cotton 220 and the oil-absorbing cotton 221 when the smoke cartridge is in a normal, non-inverted state to prevent the atomized liquid in the oil-storing cotton 220 from entering the oil-absorbing cotton 221. To further enhance the isolation performance of the isolation member 222, multiple annular sealing ribs are provided on both the outer and inner surfaces of the isolation member 222. Furthermore, in the actual design of the atomizer core 210, to strengthen the outer steel tube 230's support for the oil-storing cotton 220 and reserve a certain amount of oil storage space, its upper end is higher than the oil-absorbing cotton 221. Accordingly, a fourth annular groove 313 is recessed at the outer edge of the bottom surface of the third accommodating groove 311. This fourth annular groove 313 allows the top end of the outer steel tube 230 to be inserted and positioned, thereby facilitating assembly of the outer steel tube 230. The bottom surface of the third accommodating groove 311 also features multiple downwardly projecting bumps 314. These bumps 314 provide clearance from the top end surface of the oil-absorbing cotton 221, thereby providing a certain upward positioning effect on the oil-absorbing cotton 221 without causing downward compression. Of course, this also reserves as much oil storage space as possible.

[0046] The present application also proposes an electronic cigarette, which includes the aforementioned cartridge with a closed oil tank oil pressure balance structure. The specific structure of the cartridge with a closed oil tank oil pressure balance structure refers to the above embodiments. Since the present electronic cigarette adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0047] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A cigarette cartridge with a closed oil tank and oil pressure balance structure, used for electronic cigarettes, characterized in that: The cigarette cartridge with a closed oil tank oil pressure balance structure includes: An outer shell is formed with an inner cavity with a hollow bottom opening and an air passage located in the middle of the outer shell, wherein the air passage is isolated from the inner cavity; The atomizer assembly includes an atomizer core, an oil-storing cotton, and an outer steel tube, all of which are arranged in a cylindrical shape from top to bottom. The atomizer core, the oil-storing cotton, and the outer steel tube are sequentially arranged from the inside to the outside. The atomizer core includes a heating mesh and oil-conducting cotton. The inner side of the atomizer core forms an atomization center hole connected to the airway. And, A sealing assembly is built into the inner cavity of the housing and includes an upper sealing member and a lower sealing member integrally made of elastic material; the upper sealing member is sleeved on the upper end of the atomizer assembly and is in sealing contact with the atomizer assembly, and the outer side surface of the upper sealing member is in sealing contact with the inner wall surface of the inner cavity of the housing; the lower sealing member is in sealing contact with the lower end of the atomizer assembly, and the outer side surface of the lower sealing member is in sealing contact with the inner wall surface of the inner cavity of the housing; Among them, the cigarette cartridge includes an unfilled state and an oil-filled state; in the unfilled state, the upper seal, the lower seal, the outer side surface of the outer steel pipe and the inner wall surface of the inner cavity together form a completely closed oil storage bin; the atomized liquid of the electronic cigarette is injected into the oil storage bin after piercing the lower seal through the oil filling device, and the air in the oil storage bin is displaced by the atomized liquid and discharged from the oil-conducting cotton to the atomization center hole through the atomization component. After the oil filling device is withdrawn, the lower seal blocks the puncture point through elastic recovery, so that the cigarette cartridge is in the oil-filled state, and the oil storage bin is in a negative oil pressure state, and the oil-conducting cotton is in an oil-lubricated state.

2. The cigarette cartridge with a closed oil tank oil pressure balance structure according to claim 1, characterized in that: The cigarette cartridge with a closed oil tank oil pressure balance structure also includes a bottom cover, which is detachably connected to the bottom end of the shell and covers the lower opening of the inner cavity of the shell; the lower sealing member is sleeved on the upper end of the bottom cover; an oil filling hole is provided on the bottom cover, and when the cigarette cartridge is in the un-oiled state, the lower sealing member sealingly covers the oil filling hole toward the upper opening of the upper sealing member.

3. The cigarette cartridge with a closed oil tank oil pressure balance structure according to claim 2, characterized in that: The lower sealing member is formed with a first receiving groove with an upper opening and a second receiving groove with a lower opening; the lower end of the atomizing core assembly is adapted to be inserted into the first receiving groove; the second receiving groove is arranged around the periphery of the first receiving groove, and a bottom cover protrusion corresponding to the shape of the second receiving groove is convexly provided on the top surface of the bottom cover, and the bottom cover protrusion is adapted to be inserted into the second receiving groove; the oil filling hole is provided on the bottom cover protrusion and is arranged to pass through from top to bottom.

4. The cigarette cartridge with a closed oil tank oil pressure balance structure according to claim 3, characterized in that: A plurality of annular first sealing ribs are convexly provided on the outer annular surface of the lower sealing member. The plurality of first sealing ribs are arranged at intervals in the vertical direction. The lower sealing member is elastically sealed against the inner wall surface of the inner cavity of the housing through the first sealing ribs. A plurality of annular second sealing ribs are protruding from the inner wall surface of the first accommodating groove, and the plurality of second sealing ribs are arranged at intervals in the up and down directions. The lower sealing member is elastically sealed against the outer side surface of the lower end of the outer steel pipe through the second sealing ribs.

5. The cigarette cartridge with a closed oil tank oil pressure balance structure according to claim 1, characterized in that: The top surface of the upper seal is elastically fitted with the inner wall surface of the inner cavity of the shell, and a third accommodating groove with a lower opening is provided on the bottom surface of the upper seal, and the upper end of the atomizer assembly is adapted to be inserted into the third accommodating groove; the top surface of the upper seal is provided with a first through hole located below the air duct, and the air duct, the first through hole, the third accommodating groove and the atomizer center hole are connected in sequence along the up and down directions.

6. The cigarette cartridge with a closed oil tank oil pressure balance structure according to claim 5, characterized in that: A plurality of annular third sealing ribs are convexly provided on the outer annular surface of the upper sealing member, and the plurality of third sealing ribs are arranged at intervals in the vertical direction, and the upper sealing member is elastically sealed against the inner wall surface of the inner cavity of the housing through the third sealing ribs; A plurality of annular fourth sealing ribs are protruding from the inner wall surface of the third accommodating groove, and the plurality of fourth sealing ribs are arranged at intervals in the up-down direction. The upper sealing member is elastically sealed against the outer side surface of the upper end of the outer steel pipe through the fourth sealing ribs.

7. The cigarette cartridge with a closed oil tank oil pressure balance structure according to claim 6, characterized in that: The cigarette cartridge with a closed oil tank oil pressure balance structure also includes oil-absorbing cotton and an isolating member both located inside the outer steel tube. The oil-absorbing cotton is located above the oil-storing cotton, and the isolating member is clamped between the oil-absorbing cotton and the oil-storing cotton to isolate the oil-storing cotton from the oil-absorbing cotton.

8. The cigarette cartridge with a closed oil tank oil pressure balance structure according to any one of claims 1 to 7, characterized in that: The outer steel pipe is provided with 6 to 8 oil inlet holes at even intervals along the circumference.

9. The cigarette cartridge with a closed oil tank oil pressure balance structure according to claim 8, characterized in that: The density of the oil storage cotton is 0.09-0.15g / cm 3 .

10. An electronic cigarette, characterized in that: It comprises a cigarette cartridge with a closed oil tank oil pressure balance structure as described in any one of claims 1 to 9.

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