A test device and method for the sealing performance of an oil-filled cigarette cartridge atomizer core

Abstract

The present invention discloses a device and a method for testing the airtightness performance of an atomizer core of an oil-filled cigarette cartridge. The device comprises a glass tube, a lower sealing member, an upper sealing member, a pressure monitoring member and an air pressure regulating member. The glass tube is a transparent member. The lower sealing member is arranged horizontally. An embedding hole penetrating up and down is provided in the middle of the lower sealing member. The embedding hole is used for sealing and embedding the lower end of the atomizer core to be tested. The glass tube is arranged vertically, and the lower sealing member is used for sealing and embedding the lower end of the glass tube. The atomizer core is located in the glass tube, and the glass tube is used for containing cigarette oil. The upper sealing member is used for sealing and blocking the upper end of the glass tube. The pressure monitoring member is used for monitoring the pressure in the glass tube. The air pressure regulating member is used for regulating the pressure in the glass tube. The structure is simple, and positive pressure test experiments and negative pressure test experiments can be performed on the atomizer core respectively.

Description

Technical Field

[0001] The present invention belongs to the technical field of electronic cigarette cartridges, and in particular relates to a device and a method for testing the sealing performance of an atomizing core of an oil-filled cartridge. Background Art

[0002] Disposable e-cigarette cartridges are generally categorized as liquid storage and refillable. Refillable cartridges incorporate a reservoir, which uses the capillary structure of the reservoir to shape the liquid from a liquid state into a nearly solid form. This allows for larger refill volumes and more complex structural designs. Refillable cartridges, on the other hand, rely on the barrier created by the wetting of the cartridge's atomizer core (liquid-conducting cotton or porous ceramic) and the negative pressure generated by the cartridge's consumption process to maintain stable liquid storage. However, to ensure consistent flavor and liquid delivery, the materials and technologies used in existing commercially available cartridges offer limited barrier and negative pressure effects. These two effects are intertwined, and there is currently no suitable method to quantitatively test their interrelationship and their combined effects to provide data support for cartridge design. Consequently, the design of refillable cartridge oil volumes typically requires extensive lifecycle testing or empirically selected safety values, with designs generally limited to less than 2ml. A smaller oil filling volume means a shorter life cycle of the cartridge, accompanied by the discharge of a large number of discarded cartridges into the environment. A larger oil filling volume causes the oil pressure of the oil to exceed the barrier limit of the atomizer core and seep out, eventually leading to oil leakage from the cartridge. However, there are currently no methods and equipment on the market that can test the airtightness of the atomizer core. It is impossible to accurately evaluate key parameters such as the material matching of the atomizer core oil guide cotton, the design of the oil guide cotton seam position, the tightness of the heating mesh assembly, and the oil supply matching speed. This leads to a series of problems such as long design and verification cycles of e-cigarette products and unclear troubleshooting. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide an oil-filled cigarette cartridge atomizer core sealing performance testing device with a simple structure and convenient positive pressure testing and negative pressure testing of the atomizer core sealing performance.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: A device for testing the sealing performance of an atomizing core of an oil-filled cigarette cartridge, comprising a glass tube, a lower sealing member, an upper sealing member, a pressure monitoring member and an air pressure regulating member, wherein the glass tube is a transparent member, the lower sealing member is arranged horizontally, and the middle part of the lower sealing member is provided with an embedding hole running through the upper and lower parts, and the embedding hole is used for sealing and embedding the lower end of the atomizing core to be tested, the glass tube is arranged vertically, and the lower sealing member is used for sealing and installing the lower end of the glass tube, and the atomizing core is located in the glass tube, and the glass tube is used to hold the cigarette oil, the upper sealing member is used to seal and block the upper end of the glass tube, the pressure monitoring member is used to monitor the pressure in the glass tube, and the air pressure regulating member is used to adjust the pressure in the glass tube.

[0005] The beneficial effect of the above technical solution is that: in this way, the atomizer core can be sealed and embedded in the embedding hole of the lower sealing member, and the oil-filled cigarette cartridge atomizer core sealing performance test equipment is assembled, and then the cigarette oil is added to the glass tube, and then the glass tube is pressurized or vacuumed through the air pressure regulating member to perform positive pressure test experiments and negative pressure test experiments respectively.

[0006] In the above technical solution, a silicone piece is embedded in the middle of the lower blocking piece, and the embedding hole is provided in the middle of the silicone piece.

[0007] The beneficial effect of the above technical solution is that the atomizer core has good sealing performance when it is embedded in the embedding hole.

[0008] In the above technical solution, the lower end of the glass tube is a threaded interface, the lower blocking member is a groove-shaped cover, the groove of which is provided with an internal thread, and the center is provided with a mounting hole, and the silicone member is fixedly installed at the mounting hole.

[0009] The beneficial effect of the above technical solution is that it makes it more convenient to connect the lower sealing member with the lower end of the glass tube.

[0010] The glass tube in the above technical solution is provided with a height scale.

[0011] The beneficial effect of the above technical solution is that it can conveniently know the height of the e-liquid in the glass tube.

[0012] The upper sealing part in the above technical solution is a three-way glass part, the upper end of the glass tube has a frosted interface, the upper sealing part has two interfaces and a frosted socket located at its lower end, the frosted socket is sealed and docked with the frosted interface, one of the interfaces is connected to the air pressure regulating part, and the other interface is connected to the air port of the pressure monitoring part.

[0013] The beneficial effects of the above technical solution are: its structure is simple, and it makes the arrangement of the air pressure regulating component and the pressure monitoring component more convenient.

[0014] In the above technical solution, a heat exchange coil is further provided in the glass tube, and both ends of the heat exchange coil extend to pass through the outside of the glass tube and respectively constitute a liquid inlet and a liquid outlet. The heat exchange coil is used to pass hot fluid or cooling fluid to regulate the temperature inside the glass tube.

[0015] The beneficial effect of the above technical solution is that the temperature inside the glass tube can be adjusted by the heat exchange coil to adjust the temperature during the positive pressure test experiment and the negative pressure test experiment, thereby simulating the storage and transportation of the cigarette cartridge atomizer core at different temperatures.

[0016] In the above technical solution, the upper end of the glass tube is further provided with a temperature measuring component for measuring the temperature inside the glass tube.

[0017] The beneficial effect of the above technical solution is that the temperature inside the glass tube can be measured in real time by the temperature measuring element.

[0018] A second object of the present invention is to provide a method for testing the sealing performance of an atomizer core using the above-mentioned oil-filled cigarette cartridge atomizer core sealing performance testing equipment.

[0019] In order to achieve the above-mentioned purpose, another technical solution of the present invention is as follows: a method for testing the sealing performance of an oil-filled cigarette cartridge atomizer core, using the above-mentioned oil-filled cigarette cartridge atomizer core sealing performance testing equipment for testing, and the testing steps are as follows:

[0020] Step 1: Seal the mist outlet of the atomizer core to be tested, and seal its lower end in the embedding hole, and then seal the lower sealing member 2 at the lower end of the glass tube;

[0021] Step 2: Adding e-liquid into the glass tube, the depth of the e-liquid in the glass tube being consistent with the designed filling height of the e-liquid in the e-cigarette cartridge;

[0022] Step 3: Seal the upper sealing member at the upper end of the glass tube and complete the installation of the pressure monitoring member and the air pressure regulating member;

[0023] Step 4: pressurize or vacuum the glass tube through the air pressure regulating member to perform positive pressure test experiments and negative pressure test experiments respectively.

[0024] The beneficial effects of the above technical solution are: it is easy to operate and has multiple functions, and can perform both positive pressure test experiments and negative pressure test experiments.

[0025] The specific operation of the positive pressure test experiment in the steps described in the above technical solution is: gradually increase the pressure in the glass tube by adjusting the air pressure regulating member, and record the pressure change curve in the glass tube over time until the oil stain appears at the lower end of the atomizer core, and record the pressure value in the glass tube at this time.

[0026] The beneficial effect of the above technical solution is that: it is easy to test, and the glass tube is pressurized by the air pressure regulating member. After the pressure in the glass tube squeezes the e-liquid to penetrate the atomizer core, the e-liquid will seep out from the lower end of the atomizer. At this time, the maximum pressure of the atomizer core can be known.

[0027] The specific operation of the negative pressure test experiment in the steps described in the above technical solution is: the air pressure regulating component is used to adjust the vacuum treatment in the glass tube so that the pressure therein is gradually reduced, and the pressure change curve in the glass tube is recorded at the same time until bubbles appear at the edge of the atomizer core. The operation of the air pressure regulating component can be stopped and the pressure in the glass tube is maintained. The pressure in the glass tube at this time is determined to be the dynamic negative pressure limit of the atomizer core. After the pressure is maintained, the pressure change in the glass tube is continued to be observed, and the pressure change curve in the glass tube is continuously recorded until the pressure in the glass tube rises to a normal pressure state. The equilibrium negative pressure range of the atomizer core is determined based on the pressure change curve.

[0028] The beneficial effect of the above technical solution is that negative pressure can be drawn into the glass tube through the air pressure regulating member until bubbles appear around the atomizer core, indicating that the outside air has passed through the lower end of the atomizer core and penetrated the atomizer core. Then, vacuum drawing is stopped and the pressure is maintained. At this time, since the outside air still penetrates into the glass tube through the atomizer core, the pressure in the glass tube will slowly rise. After rising to a certain level, the pressure in the glass tube remains unchanged for a period of time. This period of time and the pressure correspond to the equilibrium negative pressure range of the atomizer core. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A cross-sectional view of the atomizer core of an existing oil-filled cigarette cartridge;

[0030] Figure 2 This is a cross-sectional view of the equipment for testing the sealing performance of the atomizer core of the oil-filled cigarette cartridge described in Example 1 of the present invention;

[0031] Figure 3 is a cross-sectional view of the glass tube and the lower sealing member when separated in Example 1 of the present invention;

[0032] Figure 4 This is a simplified structural diagram of the equipment for testing the sealing performance of the atomizer core of an oil-filled cigarette cartridge according to Example 2 of the present invention;

[0033] Figure 5This is a simplified structural diagram of the equipment for testing the airtightness of the atomizer core of a refillable cigarette cartridge, as described in Example 3 of the present invention. The diagram includes: 1. Glass tube; 11. Threaded interface; 12. Frosted interface; 13. Altitude scale; 14. Heat exchange coil; 141. Liquid inlet; 142. Liquid outlet; 2. Lower sealing member; 21. Silicone member; 211. Mounting hole; 22. Mounting hole; 3. Upper sealing member; 31. Interface; 32. Frosted socket; 4. Pressure monitoring member; 5. Air pressure regulating member; 51. Valve; 6. Atomizer core; 61. Cartridge shell; 611. Oil hole; 62. Atomizer core; 63. Heating wire; 7. Temperature measuring member. DETAILED DESCRIPTION

[0034] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in exact proportions. They are only used to facilitate and clearly illustrate the purpose of the embodiments of the present invention.

[0035] The structure of the atomizer core in the current oil-filled cigarette cartridge is as follows: Figure 1 As shown, it has a vertically arranged cylindrical shell 61 with two ends passing through it, and a plurality of oil holes 611 are circumferentially spaced on the side wall of the cylindrical shell 61, and a vertically arranged cylindrical atomizer core 62 is provided in the cylindrical shell 61. The atomizer core 62 blocks the plurality of oil holes 611 in the cylindrical shell 61, and a heating wire 63 is provided in the atomizer core 62. The smoke oil outside the atomizer core passes through the oil holes and slowly seeps through the atomizer core into the inner hole of the atomizer core to be atomized in contact with the heating wire. At this time, the upper end of the cylindrical shell constitutes the mist outlet, and the atomized smoke oil overflows through the mist outlet. Among them, the material of the atomizer core is an oil-conducting cotton material or a porous ceramic part. Since the atomizer core needs to have a certain penetration resistance, the main purpose is to test the sealing performance of the atomizer core, and digitize the correlation between the barrier effect of the atomizer core and the negative pressure effect in the cigarette cartridge, which can provide guidance for the development of atomizer core materials and the design of cigarette cartridge oil storage safety.

[0036] Example 1

[0037] like Figure 2 and Figure 3As shown, this embodiment provides a device for testing the sealing performance of an atomizer core of an oil-filled cigarette cartridge, comprising a glass tube 1, a lower blocking member 2, an upper blocking member 3, a pressure monitoring member 4, and an air pressure regulating member 5. The glass tube 1 is a transparent member, the lower blocking member 2 is arranged horizontally, and a mounting hole 211 is provided in the middle of the lower blocking member 2, which runs through the upper and lower parts. The mounting hole 211 is used for sealing and mounting the lower end of the atomizer core 6 to be tested. The glass tube 1 is arranged vertically, and the lower blocking member 2 is used for sealing and mounting the lower end of the glass tube 1, and the atomizer core 6 is located in the glass tube 1. The glass tube 1 is used to contain e-liquid, the upper sealing member 3 is used to seal and block the upper end of the glass tube 1, the pressure monitoring member 4 is used to monitor the pressure in the glass tube 1, and the air pressure regulating member 5 is used to regulate the pressure in the glass tube 1. In this way, the atomizer core can be sealed and embedded in the embedding hole of the lower sealing member, and the oil-filled cigarette cartridge atomizer core sealing performance test equipment is assembled. Then, e-liquid is added to the glass tube, and the glass tube is pressurized or vacuumed through the air pressure regulating member to perform positive pressure test experiments and negative pressure test experiments respectively.

[0038] In the above technical solution, the middle of the lower blocking member 2 is embedded with a silicone member 21 , and the embedding hole 211 is provided in the middle of the silicone member 21 , so that the atomizer core has good sealing performance when embedded in the embedding hole.

[0039] In the above technical solution, the lower end of the glass tube 1 is a threaded interface 11, and the lower sealing member 2 is a groove-shaped cover with an internal thread at the notch and a mounting hole 22 at the center. The silicone member 21 is fixedly installed at the mounting hole 22, which makes it more convenient to connect the lower sealing member with the lower end of the glass tube.

[0040] In the above technical solution, the glass tube 1 is provided with a height scale 13, so that the height of the e-liquid in the glass tube can be easily known.

[0041] Wherein, a valve 51 may be provided at the connection point between the air pressure regulating member and the upper blocking member.

[0042] The upper end of the glass tube 1 has a frosted interface 12 .

[0043] In this embodiment, the upper sealing member can be directly sealed with a rubber plug at the frosted interface. At this time, the two ends of the glass riser are respectively sealed by the upper sealing member and the lower seam member, and the embedding hole is used for the sealed embedding of the atomizer core. The pressure monitoring member 4 (which can be a pressure sensor or a digital pressure gauge) and the air pressure regulating member 5 (which can be an air supply pump or a vacuum pump) are both connected to the glass tube by passing through the upper sealing member.

[0044] Of course, the lower sealing member in this embodiment can also be directly a silicone pad, and the lower end of the glass tube is flat, and the lower end of the glass tube can be directly pressed against the lower sealing member (at this time, the lower end of the glass tube can be sealed).

[0045] Example 2

[0046] Same as Example 1, except that Figure 4 As shown, the upper sealing member 3 in the above technical solution is a three-way glass member. The upper sealing member 3 has two interfaces 31 and a frosted socket 32 ​​at its lower end. The frosted socket 32 ​​is sealed and docked with the frosted interface 12. One of the interfaces 31 is located at the upper end of the upper sealing member and communicates with the air pressure regulating member 5. The other interface 31 is located on the side wall of the upper sealing member and communicates with the air port of the pressure monitoring member 4. The frosted socket is located at the lower end of the upper sealing member. This simplifies the structure and makes the installation of the air pressure regulating member and the pressure monitoring member 4 more convenient. Preferably, the vertical height difference between the two interfaces in this embodiment should not be less than 5 cm. This can prevent the air pressure regulating member from affecting the monitoring sensitivity of the pressure monitoring member 4 during inflation or deflating.

[0047] Example 3

[0048] Same as Example 1 or Example 2, except that Figure 5 As shown, in the above technical solution, a heat exchange coil 14 is further provided in the glass tube 1, and both ends of the heat exchange coil 14 extend to pass through the outside of the glass tube 1 and respectively constitute a liquid inlet 141 and a liquid outlet 142. The heat exchange coil 14 is used to pass a hot fluid (such as warm water with a temperature of 40-50°C) or a cooling fluid (such as cooling water) to adjust the temperature in the glass tube 1. In this way, the temperature in the glass tube can be adjusted by the heat exchange coil, so as to adjust the temperature during the positive pressure test experiment and the negative pressure test experiment, thereby simulating the storage and transportation of the atomizer core of the cigarette cartridge at different temperatures.

[0049] In the above technical solution, the upper end of the glass tube 1 is further provided with a temperature measuring element 7 (which can be a temperature sensor, thermometer, or digital thermometer) for measuring the temperature inside the glass tube 1. In this way, the temperature inside the glass tube can be measured in real time through the temperature measuring element. The structure of the temperature regulating coil described in this embodiment is an existing structure. Specifically, it regulates the temperature inside the glass tube to a desired temperature and maintains it relatively constant, so as to conduct a sealing performance test of the atomizer core at the corresponding temperature.

[0050] Example 4

[0051] This embodiment provides a method for testing the sealing performance of an atomizer core of an oil-filled cigarette cartridge, characterized in that the test is performed using the oil-filled cigarette cartridge atomizer core sealing performance testing device described in Example 1, Example 2, or Example 3, and the test steps are as follows:

[0052] Step 1: Seal the mist outlet of the atomizer core 6 to be tested (this can be done with a rubber plug and glue, i.e., apply glue to the rubber plug and filter it into the mist outlet to seal it), and seal its lower end into the mounting hole 211. Then, seal the lower sealing member 2 at the lower end of the glass tube 1.

[0053] Step 2: Add the e-liquid into the glass tube 1 (the viscosity and surface tension of the e-liquid must be known in advance, which can be obtained from the product manual or measured separately). The depth of the e-liquid added to the glass tube 1 is consistent with the designed filling height of the e-liquid in the e-cigarette cartridge.

[0054] Step 3: Seal the upper sealing member 3 on the upper end of the glass tube 1 and complete the installation of the pressure monitoring member 4 and the air pressure regulating member 5;

[0055] Step 4: The glass tube 1 is pressurized or vacuumed by the air pressure regulating member 5 to perform positive pressure test experiments and negative pressure test experiments respectively. The operation is simple and the functions are diverse, and both positive pressure test experiments and negative pressure test experiments can be performed.

[0056] The specific operation of the positive pressure test experiment in step 4 of the above technical solution is: gradually increase the pressure in the glass tube 1 by adjusting the air pressure regulating member 5, and record the pressure change curve in the glass tube 1 over time until oil stains appear at the lower end of the atomizer core 6, and record the pressure value in the glass tube 1 at this time. The test is simple, and the air pressure regulating member is used to pressurize the glass tube. After the pressure in the glass tube squeezes the oil to penetrate the atomizer core, the oil will seep out from the lower end of the atomizer. At this time, the maximum pressure bearing capacity of the atomizer core can be known (during the positive pressure test experiment, a piece of absorbent paper can be attached to the lower end of the lower sealing member in advance, and whether oil stains appear on the absorbent paper can be observed to determine whether the oil has seeped out from the lower end of the atomizer. Furthermore, a CCD camera can be set at the lower end of the lower sealing member to take real-time photos of the absorbent paper to determine whether there are oil stains on the absorbent paper).

[0057] When a positive pressure test experiment is performed, the air pressure regulating component may be an air supply pump, which applies pressure to the glass tube.

[0058] The specific operation of the negative pressure test experiment in step 4 of the above technical solution is: the air pressure regulating member 5 is used to adjust the vacuum treatment in the glass tube 1 so that the pressure therein is gradually reduced, and the pressure change curve in the glass tube 1 and time is recorded at the same time until bubbles appear at the edge of the atomizer core 6. The operation of the air pressure regulating member 5 can be stopped and the pressure in the glass tube 1 can be maintained (the valve can be closed during pressure maintenance), and the pressure in the glass tube 1 at this time is determined to be the dynamic negative pressure limit of the atomizer core 6. After pressure maintenance, the pressure change in the glass tube 1 is continued to be observed, and the pressure change curve in the glass tube 1 and time is continuously recorded until the pressure in the glass tube 1 rises to a normal value. The pressure state is determined, and the equilibrium negative pressure range of the atomizer core 6 is obtained based on the pressure-time variation curve. In this way, the glass tube can be pumped with negative pressure through the air pressure regulating component until bubbles appear around the atomizer core, indicating that the outside air has passed through the lower end of the atomizer core and penetrated the atomizer core. Then, the vacuum pumping is stopped and the pressure is maintained. At this time, since the outside air still penetrates into the glass tube through the atomizer core, the pressure in the glass tube will slowly rise. After rising to a certain level, the glass tube remains unchanged for a period of time. This period of time and the pressure correspond to the equilibrium negative pressure range of the atomizer core. When conducting a negative pressure test experiment, the air pressure regulating component can be a vacuum pump.

[0059] The reason why the viscosity and surface tension of the e-liquid need to be known in advance before the test in this embodiment is that both the viscosity and surface tension of the e-liquid affect its ability to penetrate the atomizer core. This embodiment can test the sealing performance of e-liquids with different viscosities and surface tensions on the atomizer core to provide guidance on the refill amount of the corresponding e-liquid product.

[0060] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A device for testing the sealing performance of an oil-filled cigarette cartridge atomizer core, characterized in that: The invention comprises a glass tube (1), a lower sealing member (2), an upper sealing member (3), a pressure monitoring member (4) and an air pressure regulating member (5), wherein the glass tube (1) is a transparent member, the lower sealing member (2) is arranged horizontally, and a mounting hole (211) is provided in the middle of the lower sealing member (2) and is passed through from top to bottom, and the mounting hole (211) is used for sealing and mounting the lower end of the atomizing core (6) to be tested, the glass tube (1) is arranged vertically, and the lower sealing member (2) is used for sealing and mounting at the lower end of the glass tube (1), and the atomizing core (6) is located in the glass tube (1). The glass tube (1) is used to contain tobacco oil, the upper sealing member (3) is used to seal and block the upper end of the glass tube (1), the pressure monitoring member (4) is used to monitor the pressure in the glass tube (1), and the air pressure regulating member (5) is used to regulate the pressure in the glass tube (1); the oil-filled cigarette cartridge atomizer core sealing performance testing equipment is used to perform positive pressure testing and negative pressure testing on the sealing performance of the atomizer core, the positive pressure test is to obtain the maximum bearing pressure of the atomizer core, and the negative pressure test is to obtain the equilibrium negative pressure range of the atomizer core based on the pressure and time change curve under the pressure maintaining state.

2. The oil-filled cigarette cartridge atomizer core sealing performance testing device according to claim 1, characterized in that: A silicone piece (21) is embedded in the middle of the lower blocking piece (2), and the embedding hole (211) is provided in the middle of the silicone piece (21).

3. The equipment for testing the sealing performance of the atomizer core of the oil-filled cigarette cartridge according to claim 2, characterized in that: The lower end of the glass tube (1) is a threaded interface (11), the lower blocking member (2) is a groove-shaped cover, the groove of which is provided with an internal thread, and the center of which is provided with a mounting hole (22), and the silicone member (21) is fixedly mounted at the mounting hole (22).

4. The equipment for testing the sealing performance of the atomizer core of the oil-filled cigarette cartridge according to claim 1, characterized in that: The glass tube (1) is provided with a height scale (13).

5. The device for testing the sealing performance of the atomizer core of the oil-filled cigarette cartridge according to any one of claims 1 to 4, characterized in that: The upper sealing member (3) is a three-way glass member, the upper end of the glass tube (1) has a frosted interface (12), the upper sealing member (3) has two interfaces (31) and a frosted socket (32) located at its lower end, the frosted socket (32) being sealed and docked with the frosted interface (12), one of the interfaces (31) being in communication with the air pressure regulating member (5), and the other interface (31) being in communication with the air port of the pressure monitoring member (4).

6. The equipment for testing the sealing performance of the atomizer core of the oil-filled cigarette cartridge according to claim 5, characterized in that: A heat exchange coil (14) is also provided in the glass tube (1), and both ends of the heat exchange coil (14) extend to pass through the outside of the glass tube (1) and respectively form a liquid inlet (141) and a liquid outlet (142). The heat exchange coil (14) is used to pass a hot fluid or a cooling fluid into the glass tube (1) to adjust the temperature of the glass tube (1).

7. The equipment for testing the sealing performance of the atomizer core of the oil-filled cigarette cartridge according to claim 6, characterized in that: The upper end of the glass tube (1) is also provided with a temperature measuring component (7) for measuring the temperature inside the glass tube (1).

8. A method for testing the sealing performance of an oil-filled cigarette cartridge atomizer core, characterized in that: The test is performed using the oil-filled cigarette cartridge atomizer core sealing performance test equipment as described in any one of claims 1 to 7, and the test steps are as follows: Step 1: Seal the mist outlet of the atomizing core (6) to be tested, and seal the lower end thereof in the embedding hole (211), and then seal the lower sealing member (2) on the lower end of the glass tube (1); Step 2: Adding tobacco oil into the glass tube (1), wherein the depth of tobacco oil added into the glass tube (1) is consistent with the designed filling height of tobacco oil in the tobacco cartridge; Step 3: Seal the upper sealing member (3) at the upper end of the glass tube (1), and complete the installation of the pressure monitoring member (4) and the air pressure regulating member (5); Step 4: pressurizing or vacuuming the glass tube (1) through the air pressure regulating member (5) to perform positive pressure test experiments and negative pressure test experiments respectively.

9. The method for testing the sealing performance of the atomizer core of the oil-filled cigarette cartridge according to claim 8, characterized in that: The specific operation of the positive pressure test experiment in step 4 is: gradually increase the pressure in the glass tube (1) by adjusting the air pressure regulating member (5), and record the pressure change curve of the glass tube (1) over time until oil stains appear at the lower end of the atomizing core (6), and record the pressure value in the glass tube (1) at this time.

10. The method for testing the sealing performance of the atomizer core of the oil-filled cigarette cartridge according to claim 8, characterized in that: The specific operation of the negative pressure test experiment in step 4 is: the vacuum treatment in the glass tube (1) is adjusted by the air pressure regulating member (5) so that the pressure therein is gradually reduced, and the pressure and time change curve in the glass tube (1) are recorded at the same time until bubbles appear at the edge of the atomizing core (6). The operation of the air pressure regulating member (5) can be stopped and the pressure in the glass tube (1) is maintained, and the pressure in the glass tube (1) at this time is determined to be the dynamic negative pressure limit of the atomizing core (6). After maintaining the pressure, the pressure change in the glass tube (1) is continued to be observed, and the pressure and time change curve in the glass tube (1) is continuously recorded until the pressure in the glass tube (1) rises to the normal pressure state, and the equilibrium negative pressure range of the atomizing core (6) is known based on the pressure and time change curve.

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