Smoke cartridge capable of separating oil core and provided with dry burning prevention structure
By controlling the isolation and connection between the heating element and the oil storage tank through the lifting base, and combined with the circuit switch component, the problem of dry burning of the electronic cigarette heating element is solved, thereby improving safety and cost-effectiveness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-03-31
AI Technical Summary
Existing electronic cigarettes are prone to dry burning of the heating element when the oil channel is not fully activated, leading to oxidation loss and safety hazards. Existing anti-dry burning solutions are complex, costly, or have insufficient sealing.
Design a cigarette cartridge with an oil core separation and anti-dry burning structure. The heating core and the oil storage tank are isolated and connected by a lifting base. Combined with a circuit switch component, the heating core is automatically powered off and powered on to avoid dry burning.
It effectively prevents the heating element from burning dry, improves safety, avoids e-liquid leakage, extends the life of the heating element, simplifies circuit design, and reduces costs.
Smart Images
Figure CN224055347U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic cigarette technology, and in particular to a cartridge with oil-core separation and an anti-dry-burning structure. Background Technology
[0002] In the field of e-cigarette technology, the application of a coil-separation structure aims to solve the problems of e-liquid leakage and aging caused by long-term immersion of the heating element. Existing technologies achieve coil-separation by setting up a movable heating component; specifically, when the cartridge is not in use, a sealing structure closes the wicking hole, physically isolating the heating element from the e-liquid reservoir. However, this design reveals significant flaws in practical use: when the user vapes without fully activating the wicking channel, the heating element continues to operate without e-liquid supply, easily leading to dry burning. Prolonged dry burning not only accelerates the oxidation and wear of the heating element, resulting in decreased atomization efficiency, but may also produce harmful substances, posing serious safety hazards.
[0003] Furthermore, existing anti-dry-burn solutions mostly employ electronic sensors to monitor e-liquid levels or temperature feedback control, such as cutting off the circuit by detecting changes in e-liquid conductivity through electrodes. However, such solutions suffer from drawbacks including complex circuitry, high cost, and susceptibility to e-liquid composition. Other mechanical anti-dry-burn structures, while achieving circuit switching through physical linkage, generally suffer from insufficient sealing leading to leakage, or structural wear caused by excessive operating force. Therefore, this paper presents a cartridge with a separate oil core and an anti-dry-burn structure to solve the aforementioned technical problems. Utility Model Content
[0004] The purpose of this invention is to provide a cartridge with oil-core separation and an anti-dry-burning structure to address the shortcomings of existing technologies, thereby solving the technical problem that existing oil-core separated electronic cigarettes are prone to dry-burning of the heating element during smoking.
[0005] To achieve the above objectives, the technical solution of this utility model is as follows:
[0006] A cartridge with oil core separation and anti-dry burning structure includes an oil cup and a sealing seat installed inside the oil cup. The top of the sealing seat and the inner wall of the oil cup form an oil storage chamber for storing e-liquid. The bottom of the oil cup is equipped with a lifting base that can move up and down, and the lifting base is equipped with a heating wire assembly for heating and atomizing the e-liquid. The heating wire assembly passes through the sealing seat and is partially placed in the oil storage chamber.
[0007] The heating wire assembly includes a support cylinder, inside which is a storage cotton for absorbing e-liquid, and inside the storage cotton is a heating core for heating the e-liquid. The outer wall of the support cylinder is formed with several oil guiding holes for guiding the e-liquid to the storage cotton.
[0008] A switch is provided between the oil cup and the lifting base to control the on / off state of the heating element circuit; when the lifting base is at the bottom, the sealing seat blocks the oil guide hole, and the switch controls the heating element to disconnect from the circuit; when the lifting base moves to the top, the oil guide hole disengages from the sealing seat and connects to the oil storage tank, and the switch controls the heating element to connect to the circuit.
[0009] Furthermore, the top of the oil cup is formed with a mouthpiece, and a smoke guide channel is provided inside the mouthpiece. The top of the heating wire assembly is movably disposed in the smoke guide channel, and the heating wire assembly is connected to the smoke guide channel. A sealing sleeve for preventing e-liquid leakage is provided between the outer wall of the top of the heating wire assembly and the inner wall of the smoke guide channel.
[0010] Furthermore, the heating element is electrically connected to a first heating element pin and a second heating element pin.
[0011] Furthermore, the switching component includes a positive electrode pin and a negative electrode pin installed at the bottom of the lifting base. The end of the second heating core pin is electrically connected to the positive electrode pin, and the top of the negative electrode pin extends into the lifting base. The bottom of the sealing seat is equipped with a conductive part for electrically connecting the negative electrode pin and the first heating core pin. When the lifting base moves to its highest point, the conductive part simultaneously contacts the top of the negative electrode pin and the end of the first heating core pin to conduct electricity.
[0012] Furthermore, an installation cylinder is formed inside the lifting base, with the positive electrode nail portion placed inside the installation cylinder, and the end of the second heating core pin extending into the installation cylinder and contacting the positive electrode nail.
[0013] Furthermore, the lifting base is equipped with an insulating sleeve, and the end of the first heating core pin extends into the insulating sleeve; the conductive part includes a conductive plate, and the conductive plate is equipped with a vertically extending conductive needle; when the lifting base moves to its highest point, the conductive needle inserts into the insulating sleeve and contacts the first heating core pin, and the top of the negative electrode nail contacts the conductive plate.
[0014] Furthermore, the bottom inner side of the support cylinder is equipped with oil-absorbing cotton for absorbing e-liquid that has not been fully atomized.
[0015] Furthermore, the lifting base is formed with air holes that communicate with the heating wire assembly.
[0016] Furthermore, a positioning plate is provided on the top of the sealing seat, and the positioning plate is fixedly installed on the inner side wall of the oil cup.
[0017] Furthermore, the bottom side wall of the oil cup is formed with an upper and a lower slot arranged vertically, and the side wall of the lifting base is formed with a buckle that can be inserted into the upper or lower slot; when the lifting base is at the bottom point, the buckle is inserted into the lower slot, and when the lifting base is at the top point, the buckle is inserted into the upper slot.
[0018] The beneficial effects of this utility model are as follows: When the lifting base is at its lowest point, the sealing seat blocks the oil guide hole, causing the heating element inside the support cylinder to separate from the e-liquid in the oil storage tank (oil-element separation). This allows the e-liquid to be stored in an independently sealed oil storage tank, preventing the heating element from being immersed in the e-liquid for a long time and also preventing e-liquid leakage. When an upward thrust is applied to the lifting base, the lifting base drives the heating wire assembly to move upward. When the lifting base reaches its highest point, the oil guide hole disengages from the sealing seat, allowing the oil guide hole to connect with the oil storage tank. The e-liquid in the oil storage tank automatically flows into the heating wire assembly through the oil guide hole for absorption by the oil storage cotton. The heating element inside the oil storage cotton then heats and atomizes the e-liquid for the user to inhale.
[0019] Furthermore, when the lifting base is at its lowest point, the sealing seat not only blocks the oil guide hole, but the switching component also disconnects the heating element from the circuit, keeping the heating element in a power-off state. This prevents the user from smoking without connecting the oil guide hole to the oil reservoir, which could cause the heating element to burn dry and damage it, thus improving the safety of the cartridge. When the lifting base reaches its highest point, the oil guide hole disengages from the sealing seat and connects to the oil reservoir. Simultaneously, the switching component connects the heating element to the circuit, keeping it powered on. When smoking, the heating element heats up to produce smoke. Attached Figure Description
[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0021] Figure 2 This is a schematic diagram of the internal structure of this utility model.
[0022] Figure 3 This is a schematic diagram of the heating wire assembly of this utility model.
[0023] The reference numerals in the figures include:
[0024] 1. Oil cup; 2. Sealing seat; 3. Oil reservoir; 4. Mouthpiece; 5. Smoke guide channel; 6. Lifting base; 7. Heating wire assembly; 71. Support cylinder; 72. Oil storage cotton; 73. Oil guide hole; 74. Heating core; 75. Oil absorbent cotton; 8. Sealing sleeve; 9. First heating core pin; 10. Second heating core pin; 11. Mounting cylinder; 12. Positive electrode nail; 13. Insulating sleeve; 14. Negative electrode nail; 15. Conductive plate; 16. Conductive needle; 17. Lower slot; 18. Upper slot; 19. Buckle; 20. Air hole; 21. Positioning plate. Detailed Implementation
[0025] The following is a detailed description of a smoke cartridge with oil core separation and anti-dry burning structure according to the present invention, with reference to the accompanying drawings.
[0026] like Figure 1-3As shown, an embodiment of the e-liquid cartridge with oil-core separation and anti-dry-burning structure of this utility model includes an oil cup 1 and a sealing seat 2 installed inside the oil cup 1. The top of the sealing seat 2 and the inner wall of the oil cup 1 form an oil storage chamber 3 for storing e-liquid. A movable lifting base 6 is installed at the bottom of the oil cup 1, positioned below the sealing seat 2, and equipped with a heating wire assembly 7 for heating and atomizing the e-liquid. When the lifting base 6 moves up and down at the bottom of the oil cup 1, it moves up and down along with the heating wire assembly 7. The heating wire assembly 7 passes through the sealing seat 2 and is partially placed inside the oil storage chamber 3. The sealing seat 2 is made of silicone, allowing it to deform. When the heating wire assembly 7 moves up and down, the sealing seat 2 remains close to the outer wall of the heating wire assembly 7, preventing e-liquid in the oil storage chamber 3 from leaking out from the gap between them.
[0027] Furthermore, the top of the oil cup 1 is formed with a mouthpiece 4, and a smoke guide channel 5 is provided inside the mouthpiece 4. The top of the heating wire assembly 7 is movably disposed within the smoke guide channel 5, and the heating wire assembly 7 is connected to the smoke guide channel 5. A sealing sleeve 8 is provided between the outer wall of the top of the heating wire assembly 7 and the inner wall of the smoke guide channel 5 to prevent e-liquid leakage. The sealing sleeve 8 is also made of silicone. When the lifting base 6 moves upward with the heating wire assembly 7, it can drive the sealing sleeve 8 to move upward within the smoke guide channel 5. Alternatively, the sealing sleeve 8 can remain stationary while the top of the heating wire assembly 7 moves upward within the sealing sleeve 8. When the heating wire assembly 7 moves up and down, the sealing sleeve 8 always fills the gap between the outer wall of the top of the heating wire assembly 7 and the inner wall of the smoke guide channel 5. Under the deformation of the sealing sleeve 8 itself, the gap is filled, achieving the effect of preventing e-liquid leakage.
[0028] The lifting base 6 has an air hole 20 that communicates with the heating wire assembly 7. When the user smokes through the mouthpiece 4, outside air enters the heating wire assembly 7 through the air hole 20. At this time, the heating wire assembly 7 is activated, heating the e-liquid inside the heating wire assembly 7 to atomize it. The air carries the smoke out and guides it through the smoke guide channel 5 for the user to inhale.
[0029] A positioning plate 21 is provided on the top of the sealing seat 2. The sealing seat 2 can be a rigid plate such as a plastic plate or a metal plate, and the positioning plate 21 is fixedly installed on the inner side wall of the oil cup 1. By setting the positioning plate 21, the sealing seat 2 can be placed more stably in the oil cup 1, preventing the sealing seat 2 from deviating in the oil cup 1 when the heating wire assembly 7 moves up and down, thus preventing e-liquid leakage.
[0030] In the initial state of this e-cigarette cartridge, the heating coil assembly 7 is separated from the e-liquid in the oil storage tank 3. The lifting base 6 moves the heating coil assembly 7 upward to connect the heating coil assembly 7 with the oil storage tank 3. After connection, the e-liquid in the oil storage tank 3 automatically flows into the heating coil assembly 7. Specifically, the heating coil assembly 7 includes a support cylinder 71, a sealing sleeve 8 is set on the top of the support cylinder 71, an oil storage cotton 72 for absorbing e-liquid is provided inside the support cylinder 71, a heating core 74 for heating the e-liquid is provided inside the oil storage cotton 72, and several oil guide holes 73 are formed on the outer wall of the support cylinder 71 to guide the e-liquid to the oil storage cotton 72. When the lifting base 6 is at its lowest point, the sealing seat 2 blocks the oil guide hole 73, separating the heating element 74 inside the support cylinder 71 from the e-liquid in the oil storage tank 3 (oil-element separation). This allows the e-liquid to be stored in the independently sealed oil storage tank 3, preventing the heating element 74 from being immersed in the e-liquid for a long time and also preventing e-liquid leakage. When an upward thrust is applied to the lifting base 6, the lifting base 6 drives the heating wire assembly 7 to move upward. When the lifting base 6 reaches its highest point, the oil guide hole 73 disengages from the sealing seat 2, allowing the oil guide hole 73 to connect with the oil storage tank 3. The e-liquid in the oil storage tank 3 automatically flows into the heating wire assembly 7 through the oil guide hole 73 for absorption by the oil storage cotton 72. The heating element 74, located inside the oil storage cotton 72, heats and atomizes the e-liquid for the user to inhale.
[0031] In this embodiment, the bottom inner side of the support cylinder 71 is provided with oil-absorbing cotton 75 for absorbing e-liquid that has not been completely atomized; when the user smokes, the e-liquid that has not been completely atomized flows down inside the support cylinder 71 and is absorbed by the oil-absorbing cotton 75, preventing the e-liquid from leaking out from the air hole 20.
[0032] When the oil guide hole 73 is not connected to the oil reservoir 3 (oil core separation), smoking by the user will cause the heating core 74 to burn dry. Prolonged dry burning will damage the heating core 74. To prevent the heating core 74 from burning dry when the oil core is separated, the heating core 74 is electrically connected with a first heating core pin 9 and a second heating core pin 10. The lifting base 6 has a mounting cylinder 11 formed inside, and the bottom of the lifting base 6 is equipped with a positive electrode nail 12 for contacting the positive terminal of the power supply. Part of the positive electrode nail 12 is placed inside the mounting cylinder 11, and the end of the second heating core pin 10 extends into the mounting cylinder 11 and contacts the positive electrode nail 12. When the positive electrode nail 12 contacts the positive terminal of the power supply, the second heating core pin 10 is connected to the positive terminal of the power supply (electrical connection). An insulating sleeve 13 is installed inside the lifting base 6. The end of the first heating core pin 9 extends into the insulating sleeve 13. A negative electrode nail 14 for contacting the negative terminal of the power supply is installed at the bottom of the lifting base 6. The top of the negative electrode nail 14 extends into the lifting base 6. A conductive plate 15 is installed at the bottom of the sealing seat 2. A vertically extending conductive needle 16 is welded onto the conductive plate 15.
[0033] When the lifting base 6 reaches its highest point, the conductive pin 16 inserts into the insulating sleeve 13 and contacts the first heating core pin 9. Simultaneously, the top of the negative electrode pin 14 contacts the conductive plate 15. Under the conductive action of the conductive plate 15 and the conductive pin 16, the first heating core pin 9 is connected to the negative terminal of the power supply (electrical connection), thus forming a closed circuit and energizing the heating core 74. At the same time, the oil guide hole 73 is connected to the oil storage tank 3. When the user smokes, the heating core 74 operates to heat the e-liquid. When the lifting base 6 is at its lowest point, the conductive pin 16 disengages from the insulating sleeve 13, and the top of the negative electrode pin 14 separates from the conductive plate 15. This prevents the first heating core pin 9 from connecting to the negative terminal of the power supply, keeping the heating core 74 in a de-energized state. This prevents the user from smoking without connecting the oil guide hole 73 to the oil storage tank 3, thus avoiding dry burning of the heating core 74 and preventing damage to the heating core 74, thereby improving the safety of the cartridge.
[0034] When the cartridge is not in use and the cartridge is separated from the oil core, in order to prevent the lifting base 6 from moving upward after accidental contact, an upper slot 18 and a lower slot 17 are formed on the bottom side wall of the oil cup 1, and a buckle 19 is formed on the side wall of the lifting base 6 that can be inserted into the upper slot 18 or the lower slot 17.
[0035] When the lifting base 6 is at its lowest point, the latch 19 engages with the lower latch 17, securing the lifting base 6 to the bottom of the oil cup 1. Simultaneously, the sealing seat 2 blocks the oil guide hole 73. When sufficient force is applied to the lifting base 6, it moves upward, and the latch 19 automatically disengages from the lower latch 17. When the lifting base 6 reaches its highest point, the latch 19 engages with the upper latch 18. At the same time, the oil guide hole 73 connects to the oil reservoir 3. By setting the upper and lower latches 18 and 17, which are arranged vertically and cooperate with the latch 19, the lifting base 6 is effectively limited in its lowest or highest position. When the cartridge needs to be inserted into the e-cigarette, pressing the oil cup 1 applies an upward force to the lifting base 6. When the oil cup 1 is pressed down to the point where it can no longer move, it indicates that the oil guide hole 73 is connected to the oil reservoir 3, and the latch 19 engages with the upper latch 18.
[0036] In summary, this utility model possesses the aforementioned excellent characteristics, enabling it to achieve unprecedented efficiency in use and thus become a highly practical product.
[0037] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of this utility model. The content of this specification should not be construed as a limitation of this utility model.
Claims
1. A cigarette cartridge with oil-core separation and an anti-dry-burning structure, characterized in that: The oil cup (1) and the sealing seat (2) installed in the oil cup (1) are included, the top of the sealing seat (2) and the inner wall of the oil cup (1) form the oil storage warehouse (3) for storing tobacco tar, the bottom of the oil cup (1) is provided with the lifting base (6) which can move up and down, and the lifting base (6) is provided with the heating wire assembly (7) for heating and atomizing tobacco tar, the heating wire assembly (7) passes through the sealing seat (2) and is partially arranged in the oil storage warehouse (3); The heating wire assembly (7) includes the supporting cylinder (71), the oil storage cotton (72) for absorbing tobacco tar is arranged in the supporting cylinder (71), the heating core (74) for heating tobacco tar is arranged in the oil storage cotton (72), and a plurality of oil guiding holes (73) for guiding tobacco tar to the oil storage cotton (72) are formed in the outer side wall of the supporting cylinder (71); The switch component for controlling the circuit on-off of the heating core (74) is arranged between the oil cup (1) and the lifting base (6); when the lifting base (6) is arranged at the bottom point, the sealing seat (2) blocks the oil guiding hole (73), the switch component controls the heating core (74) to be disconnected with the circuit; when the lifting base (6) is moved to the top point, the oil guiding hole (73) is separated from the sealing seat (2) and communicates with the oil storage warehouse (3), and the switch component controls the heating core (74) to be connected with the circuit.
2. The cartridge according to claim 1, wherein: The top of the oil cup (1) is formed with the cigarette holder (4), the cigarette holder (4) is provided with the smoke guiding channel (5), the top of the heating wire assembly (7) is movably arranged in the smoke guiding channel (5), the heating wire assembly (7) is arranged in communication with the smoke guiding channel (5), and the outer side wall of the top of the heating wire assembly (7) and the inner side wall of the smoke guiding channel (5) are provided with the sealing sleeve (8) for preventing tobacco tar from leaking.
3. The cartridge according to claim 1, wherein: The heating core (74) is electrically connected with the first heating core pin (9) and the second heating core pin (10).
4. The cartridge according to claim 3, wherein: The switch component includes the positive electrode nail (12) and the negative electrode nail (14) arranged at the bottom of the lifting base (6), the tail end of the second heating core pin (10) is electrically connected with the positive electrode nail (12), the top of the negative electrode nail (14) extends into the lifting base (6), and the bottom of the sealing seat (2) is provided with the conductive part for electrically connecting the negative electrode nail (14) with the first heating core pin (9); When the lifting base (6) is moved to the top point, the conductive part simultaneously contacts the top of the negative electrode nail (14) and the tail end of the first heating core pin (9) to conduct electricity.
5. The cartridge according to claim 4, wherein: The mounting cylinder (11) is formed in the lifting base (6), part of the positive electrode nail (12) is arranged in the mounting cylinder (11), and the tail end of the second heating core pin (10) extends into the mounting cylinder (11) and contacts the positive electrode nail (12).
6. The cartridge according to claim 4, wherein: The insulating sleeve (13) is arranged in the lifting base (6), and the tail end of the first heating core pin (9) extends into the insulating sleeve (13); the conductive part includes the conductive plate (15) provided with the vertically extending conductive needle (16); when the lifting base (6) is moved to the top point, the conductive needle (16) is inserted into the insulating sleeve (13) and contacts the first heating core pin (9), and the top of the negative electrode nail (14) contacts the conductive plate (15).
7. The cartridge according to claim 1, wherein: The bottom inner side of the supporting cylinder (71) is provided with oil absorption cotton (75) for absorbing the tobacco oil that is not completely atomized.
8. The cartridge according to claim 1, wherein: The lifting base (6) is formed with air holes (20) in communication with the heating wire assembly (7).
9. The cartridge according to claim 1, wherein: The top of the sealing seat (2) is provided with a positioning plate (21), and the positioning plate (21) is fixedly arranged with the inner side wall of the oil cup (1).
10. The cartridge according to claim 1, wherein: The bottom side wall of the oil cup (1) is formed with an upper clamping groove (18) and a lower clamping groove (17) arranged in an up-down manner, and the side wall of the lifting base (6) is formed with a buckle (19) capable of being clamped into the upper clamping groove (18) or the lower clamping groove (17); when the lifting base (6) is at the bottom point, the buckle (19) is clamped into the lower clamping groove (17), and when the lifting base (6) is at the top point, the buckle (19) is clamped into the upper clamping groove (18).