High-capacity electromagnetic atomization smoke cartridge and electronic cigarette

Abstract

The utility model relates to the field of electronic cigarette atomization, and provides a large-capacity electromagnetic atomization smoke cartridge and an electronic cigarette, the large-capacity electromagnetic atomization smoke cartridge comprises a shell and a suction nozzle arranged at one end of the shell, and an inner cavity of the shell extends along the length direction and is provided with an air passage communicated with the suction nozzle; the inner cavity further comprises an oil storage bin surrounding the air channel and an electromagnetic atomization core fixedly arranged between the oil storage bin and the air channel, the part, close to the suction nozzle, of the oil storage bin is provided with a large-volume cavity, the part, close to the bottom, of the oil storage bin is provided with a small-volume cavity, the volume of the large-volume cavity is larger than that of the small-volume cavity, and the large-volume cavity and the small-volume cavity are communicated. By means of the high-frequency electromagnetic heating electronic cigarette provided with the oil cup protruding in the middle, the large-volume oil storage requirement is met, meanwhile, the size of the coil winding is effectively reduced, and the high-frequency electromagnetic heating electronic cigarette is more suitable for the scene that high-frequency electromagnetic heating and large-mouth-number application are conducted at the same time.

Description

Technical Field

[0001] The utility model relates to the field of electronic cigarette atomization, in particular to a large-capacity electromagnetic atomization cigarette cartridge and an electronic cigarette. Background Art

[0002] In the existing electronic cigarette atomization field, the main mechanism for heating atomized liquid e-liquid is based on the resistance heating mode of the ceramic atomizer core or metal mesh core. The atomization principle is that the heating element is connected to the circuit board assembly (PCBA) through a lead, and heat is generated when the positive and negative electrodes are energized. After the liquid e-liquid is introduced into the atomizer core and contacts the heating element, it is quickly heated and atomized.

[0003] Among the existing technologies, some manufacturers have proposed electromagnetic heating technology, which has gradually attracted attention for its advantages such as rapid heating, precise temperature control and cleaner operation. Studies have shown that after optimized design, electromagnetic heating technology is expected to be applied to the atomization of liquid e-liquid to further improve the atomization effect. In order to achieve concentrated and localized heating to optimize the atomization effect, high-frequency alternating electromagnetic fields are considered to be an effective solution. High-frequency electromagnetic fields can improve energy conversion efficiency and generate heat in strong magnetic metal receptors through eddy current effects. However, in order to improve energy conversion efficiency and reduce losses caused by large magnetic resistance in the air gap, electromagnetic heating technology usually requires coils to be tightly wound into a compact configuration. This results in limited space inside the coil, which cannot meet the large-puff design requirements of atomizing electronic cigarettes. Therefore, how to optimize the design of electromagnetic atomizing cartridges is an important challenge for the application of electromagnetic heating technology to atomizing electronic cigarettes. Utility Model Content

[0004] In order to solve the aforementioned problems of the prior art, the utility model provides a large-capacity electromagnetic atomization cigarette cartridge, comprising an outer shell and a suction nozzle arranged at one end of the outer shell, the inner cavity of the outer shell extends along the length direction and is provided with an airway connected to the suction nozzle, the inner cavity also includes an oil storage bin wound around the airway and an electromagnetic atomization core fixed between the oil storage bin and the airway, the electromagnetic atomization core comprising: a supporting base, the supporting base having an oil outlet hole passing through the supporting base; oil-conducting cotton, the oil-conducting cotton abutting the oil outlet hole and abutting and communicating with the oil storage bin; a magnetic receptor, the oil-conducting cotton is wound around the magnetic receptor and forms a part of the airway; wherein the oil storage bin is configured as a large-volume chamber near the suction nozzle, and the oil storage bin is configured as a small-volume chamber near the bottom, the large-volume chamber has a larger volume than the small-volume chamber and the two are connected.

[0005] Furthermore, the magnetic receptor and the small volume chamber at least partially overlap in the airway direction.

[0006] Furthermore, the large volume chamber is configured to be in the shape of a hollow ring.

[0007] Furthermore, the small volume chamber is configured to be a cylindrical shape with a hollow interior.

[0008] Furthermore, the cross-sectional area of ​​the large-volume chamber is larger than the cross-sectional area of ​​the small-volume chamber.

[0009] Furthermore, the longitudinal cross-sections of the large-volume chamber and the small-volume chamber are T-shaped.

[0010] The utility model provides an electronic cigarette, comprising a cigarette shell and a concave cigarette chamber, wherein the cigarette chamber is provided with a magnetic coil, and the cigarette chamber receives any of the above-mentioned large-capacity electromagnetic atomization cigarette cartridges.

[0011] Furthermore, the small-volume chamber is contained in the cigarette bin, and the large-volume chamber is at least partially located outside the cigarette bin.

[0012] Furthermore, the heating circuit of the magnetic coil adopts a class E or class F inverter circuit, and the operating frequency is in the range of 1-10 MHz.

[0013] Compared with the prior art, the utility model has the following beneficial effects: by equipping the high-frequency electromagnetic heating electronic cigarette with a central raised oil cup, the oil cup is divided into three chambers, the upper chamber is a small suction nozzle, the middle chamber is a large-volume oil storage tank, and the lower chamber is a small-volume atomization tank. The heating section of the electromagnetic atomization core is located in the atomization tank and is surrounded by a spiral tubular three-dimensional coil. While meeting the large-volume oil storage requirements, the volume of the coil winding is effectively reduced, which is more suitable for the scenario where high-frequency electromagnetic heating and a large number of puffs are used at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the composition structure of a large-capacity electromagnetic atomization cartridge;

[0015] Figure 2 This is an exploded view of the components of a large-capacity electromagnetic atomizer cartridge;

[0016] Figure 3 Expand the plan view for the magnetic receptor;

[0017] Figure 4 It is the distribution diagram of the magnetic flux density value along the radial direction of the coil. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Embodiment 1

[0020] Reference Figure 1 and Figure 2 , the large-capacity electromagnetic atomization cartridge includes a shell 101, a suction nozzle 102, a supporting base 103, an oil storage tank 104, an oil guide cotton 105, a magnetic receptor 106, a sealing ring 107, a bottom airway 110, a heating airway 111, a middle airway 112, and a top airway 113. In addition, according to the position relationship diagram, the oil storage tank 104 is divided into a large volume chamber located in the middle MIDDLE and a small volume chamber located at the bottom BOTTOM, and a suction nozzle 102 located at the top TOP, the large volume chamber is arranged near the suction nozzle, the small volume chamber is arranged near the bottom, the large volume chamber has a larger volume than the small volume chamber, and the two are internally connected, and the smoke oil will flow between the two due to different placement angles. The large volume chamber is set as an internally hollow annular shape, which has a first cross-sectional area; the small volume chamber is set as an internally hollow cylindrical shape, which has a second cross-sectional area; the first cross-sectional area is larger than the second cross-sectional area. Therefore, based on the above description, the large volume chamber and the small volume chamber are roughly T-shaped in the longitudinal cross-section (along the airway direction), that is, they are larger at the top and smaller at the bottom.

[0021] Among them, the bottom air channel 110 is made of an annular protrusion reserved when the outer shell 101 is formed, the heating air channel 111 is formed by winding the oil-conducting cotton 105 around the magnetic receptor 106, the middle air channel 112 is formed by the hollow part of the supporting base 103, and the top air channel 113 is formed by the suction nozzle 102.

[0022] Among them, the support substrate 103, the oil-conducting cotton 105, and the magnetic receptor 106 together constitute the electromagnetic atomization core. The support substrate 103 is made of, for example, high borosilicate glass to form a support tube, the outer diameter of the support tube is 6 mm, the wall thickness is 1 mm, the inner diameter is 4 mm, and the axial length of the tube is 20 mm. In the glass tube material, the content of silicon dioxide is greater than 78wt%, the content of boron oxide is greater than 10wt%, and the softening point is 820°C. The glass tube has excellent temperature resistance and will not break during repeated atomization heating and cooling. A first oil outlet hole is opened on the support substrate 103, and the oil-conducting cotton 105 is squeezed to fill the first oil outlet hole.

[0023] The nozzle 102 is fixedly mounted at one end of the outer shell 101. The hollow inner cavity of the outer shell 101 is provided with an air passage connected to the nozzle 102 extending along the length direction. A top air passage 113 is provided in the nozzle 102. The inner cavity also includes an oil storage bin 104 arranged around the middle air passage 112 and an electromagnetic atomization core fixedly mounted between the oil storage bin 104 and the middle air passage 112. The oil storage bin 104 is provided with a second oil outlet hole (not shown in the figure). When the electromagnetic atomization core is assembled, the oil-guiding cotton 105 abuts against the second oil outlet hole to receive and connect the smoke oil in the oil storage bin 104 to achieve rapid atomization, such as Figure 1As shown, the magnetic receptor 106 is located in the lower half. To facilitate efficient atomization, the magnetic receptor and the small volume chamber at least partially overlap in the airway direction, so that the e-liquid in the large volume chamber can be supplied continuously.

[0024] like Figure 3 As shown, the magnetic receptor 106 is in the form of a thin sheet in the initial unwound state, and is in the form of a barrel or a partial barrel after being wound and assembled. It is made of a soft magnetic alloy, such as 1J36. The thickness of the substrate is 0.07 mm, the height is 6 mm, and the width is 7.2 mm. 14 strip-shaped air holes 1061 are prepared by chemical etching, and then the substrate is wound and pressed into a cylindrical hollow structure to form a physical state that can be inductively heated, and its inner diameter is about 2.5 mm. The 1J36 alloy is mainly composed of iron and nickel elements. It has a high relative magnetic permeability and low coercive force. It can also generate a high magnetic induction intensity in a weaker magnetic field, and achieve rapid heating through the eddy current effect. In this electromagnetic atomization core design, the magnetic receptor 106 is heated in air, and there is no need to electrically connect the heating element to the PCBA by welding like the mesh core of the prior art; and the magnetic receptor 106 itself does not distinguish between positive and negative electrodes, and can be pressed into a larger curvature, such as an angle of more than 300°, or a closed cylindrical surface, without the concern of resistance change caused by short circuit or deformation in the mesh core, and the heating is more stable, and the contact area with the oil-conducting cotton 105 is larger, and the atomization is better. Among them, chromium is an important added element, which makes it have excellent corrosion resistance and oxidation resistance, and can maintain stable performance during contact with liquid smoke oil and heating.

[0025] The large-capacity electromagnetic atomization cigarette cartridge of this embodiment has obvious characteristics, namely, the combination of a large oil storage bin (large volume chamber) and a small atomization bin (small volume chamber). In one embodiment, a large oil storage bin (diameter 24mm, height 20mm) and a small atomization bin (diameter 16mm, height 20mm) are selected. On the one hand, the atomization bin adopts a small cylindrical shape, which reduces the volume and facilitates the insertion of a spiral tubular coil with a small internal space, so that the sensor and the coil produce close-range electromagnetic induction coupling to achieve local and concentrated heating. This compact design reduces the volume of the coil winding, enhances the magnetic field power density generated by the coil, and thus improves the working efficiency of the coil. On the other hand, the oil storage bin adopts a thick cylindrical shape, which increases the volume, facilitates the storage of more oil cotton, and then stores more smoke oil, providing a large number of suction functions. In addition, the cylindrical design allows the oil cup to be easily assembled into the cigarette rod, and the operation is not affected by the angle, and it will not affect the symmetrical distribution configuration of the heating element and the coil in the atomization core. In practice, using a small atomization chamber (small volume chamber) with a smaller cross-section will bring better technical results.

[0026] Embodiment 2

[0027] A large-capacity electronic cigarette includes a cigarette housing and a concave cigarette chamber, wherein the cigarette chamber is provided with a coil 108 for accommodating the large-capacity electromagnetic atomization cigarette cartridge in the first embodiment. The periphery of the coil 108 also includes a magnetic ring 109 for constraining magnetic flux. The heating circuit of the coil 108 adopts an E-class or F-class inverter circuit, and its operating frequency is within the range of 1-10MHz. Figure 3 The coil 108 is fixed by a winding type coil 1081 and a forming base 1081 . When fixed, the forming base 1081 accommodates the winding type coil 1081 to prevent unnecessary sliding. The magnetic ring 109 is sleeved on the outside of the forming base 1081 .

[0028] like Figure 1 As shown, when contained, the coil 108 surrounds the small volume chamber for inductively heating the electromagnetic atomizer core. In this case, the small volume chamber is contained in the cigarette bin, and the large volume chamber is located outside the cigarette bin. Further, in some solutions, the large volume chamber is partially contained in the cigarette bin and partially located outside the cigarette bin. Further, in some solutions, the large volume chamber is located outside the cigarette bin.

[0029] This embodiment uses COMSOL software to analyze the effect of the outer diameter of the solenoid (coil) on the magnetic flux density inside it, so as to intuitively display the corresponding magnetic effect through images. In the model setting, 4 strands of Litz wire are used as one turn, the wire diameter of each strand is 0.4mm, the turn spacing is 2.1mm, and the coil height is 21.5mm; the outer side uses a magnetic conductive ring close to the outside of the coil, the thickness of the magnetic conductive ring is 1mm, the height is 21.5mm, and the relative magnetic permeability is 50,000; the input conditions of the coil are 2A current and 5MHz frequency.

[0030] Model A is a small coil with an inner diameter of 8.5 mm, while Model B is a large coil with an inner diameter of 25 mm. The results show that the magnetic flux distribution inside the coil in Model A is relatively concentrated, and its average magnetic field intensity is significantly higher than that inside the coil in Model B.

[0031] The simulation results also obtained the magnetic flux data along the plane perpendicular to the axis at the center of the coil. The results are as follows: Figure 4 As shown. Comparing models A and B, it can be found that starting from point 0, the distribution of magnetic flux along the diameter direction has obvious differences. The magnetic flux in model A is relatively stable, mostly concentrated at the level of 0.0007 Tesla; while the magnetic flux in model B fluctuates greatly, dropping to the level of 0.0004 Tesla at the axis.

[0032] From the above experimental simulation, it can be seen that the diameter of the solenoid coil will have a significant impact on the heating efficiency, such as the difference in magnetic field strength generated by diameters of 25mm and 8.5mm. This is manifested in the following aspects: (1) The smaller the diameter, the stronger the magnetic field strength generated under the same current, because the magnetic field strength is proportional to the current and the number of coil turns, and inversely proportional to the coil radius. A stronger magnetic field can more effectively penetrate the receptor, generate more eddy currents, and improve heating efficiency; (2) The smaller the diameter, the smaller the coil inductance. Smaller inductance can make the current easier to change, making it easier to generate a high-frequency alternating magnetic field, which is suitable for Class E or Class F circuit applications; (3) Matching the size and shape of the heated object, here it is necessary to match the shape of the electronic cigarette chamber, and to have strong coupling with the receptor at a close distance; (4) If the diameter is too large, the magnetic path in the air gap is longer, the magnetic resistance is larger, and energy waste may result.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A large-capacity electromagnetic atomization cartridge, comprising a shell and a nozzle arranged at one end of the shell, wherein the inner cavity of the shell extends along the length direction and is provided with an airway connected to the nozzle, and the inner cavity further comprises an oil storage bin arranged around the airway and an electromagnetic atomization core fixedly arranged between the oil storage bin and the airway, characterized in that: The electromagnetic atomizer core comprises: a supporting substrate, an oil outlet hole is formed through the supporting substrate; oil-conducting cotton, the oil-conducting cotton abuts against the oil outlet hole and abuts against and communicates with the oil storage bin; a magnetic receptor, the oil-conducting cotton is wound around the magnetic receptor and forms a part of the airway; Among them, the oil storage tank is configured as a large-volume chamber near the suction nozzle, and the oil storage tank is configured as a small-volume chamber near the bottom. The large-volume chamber has a larger volume than the small-volume chamber and the two are connected.

2. The large-capacity electromagnetic atomization cartridge according to claim 1 is characterized in that: The magnetic receptor at least partially overlaps with the small volume chamber in the direction of the airway.

3. The large-capacity electromagnetic atomization cartridge according to claim 1, characterized in that: The large volume chamber is configured to be in the shape of a hollow ring.

4. The large-capacity electromagnetic atomization cartridge according to claim 1, characterized in that: The small volume chamber is configured to be in a cylindrical shape with a hollow interior.

5. The large-capacity electromagnetic atomization cartridge according to claim 1, characterized in that: The cross-sectional area of ​​the large-volume chamber is larger than the cross-sectional area of ​​the small-volume chamber.

6. The large-capacity electromagnetic atomization cartridge according to claim 1, characterized in that: The longitudinal cross-sections of the large-volume chamber and the small-volume chamber are T-shaped.

7. An electronic cigarette, comprising a cigarette housing and a concave cigarette chamber, wherein the cigarette chamber is provided with a magnetic coil, characterized in that: The cigarette chamber receives the large-capacity electromagnetic atomization cigarette cartridge as described in any one of claims 1 to 6.

8. The electronic cigarette according to claim 7, characterized in that: The small volume chamber is contained in the cigarette bin, and the large volume chamber is at least partially located outside the cigarette bin.

9. The electronic cigarette according to claim 7, characterized in that: The heating circuit of the magnetic coil adopts an E-type or F-type inverter circuit.

10. The electronic cigarette according to claim 7, characterized in that: The heating circuit operating frequency of the magnetic coil is in the range of 1-10 MHz.

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