Electromagnetic heating atomization smoke cartridge and electronic cigarette

Abstract

The utility model relates to the field of electronic cigarette atomization, and provides an electromagnetic heating atomization cigarette cartridge and an electronic cigarette, the electromagnetic heating atomization cigarette cartridge comprises a shell, a suction nozzle and an atomization core module, an inner cavity of the shell is provided with an air passage communicated with the suction nozzle in an extending mode in the length direction, and the high-frequency electromagnetic atomization cigarette cartridge adopts an electromagnetic heating non-contact energy conversion mode. The cigarette cartridge avoids the risk of short circuit in the cigarette cartridge, has a larger heating area and a higher temperature rising speed, and is suitable for atomization of oily, water-based and mixed tobacco tar. According to the electromagnetic heating atomization electronic cigarette, the large-area light and thin receptor is matched with the high-frequency alternating electromagnetic field generated by the E-class / F-class efficient inverter circuit for coupling, liquid tobacco tar atomization can be efficiently achieved, and a new direction is developed for design and application of the electromagnetic heating electronic cigarette.

Description

Technical Field

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

[0002] In the existing field of electronic cigarette atomization, the main mechanism for heating atomized liquid e-liquid is based on the resistance heating mode of the ceramic atomizer core or the 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 after the positive and negative electrodes are energized. After the liquid e-liquid is introduced into the atomizer core, it contacts the heating element and is quickly heated and atomized. However, in order to avoid short circuits in the prior art, the e-liquid must be made of non-conductive oily substances. At the same time, in order to ensure power output, the resistance of the heating element is usually less than 1.8 ohms, which limits the increase in its area.

[0003] The characteristics of the resistance heating mode of the existing technology restrict the design of the heating element shape, the position of the positive and negative electrodes, and the heating area, which in turn limits the diversified development of liquid e-liquid categories and flavors, and is not conducive to the innovation of electronic cigarette atomization technology. With the blowout of the electronic cigarette consumer market, the bottleneck of the existing technology is particularly significant. It is necessary to propose new solutions to this technical limitation and provide valuable new solutions for the future development of electronic cigarette atomization technology. Utility Model Content

[0004] The utility model provides an electromagnetic heating atomizing cigarette cartridge and an electronic cigarette, which solve the above-mentioned prior art problems through electromagnetic heating atomization.

[0005] The electromagnetic heating atomizing cigarette cartridge comprises 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 with the suction nozzle, the inner cavity also comprises an oil storage bin arranged around the airway and an electromagnetic atomizing core fixedly arranged between the oil storage bin and the airway, the electromagnetic atomizing core comprises: a support tube, the support tube is fixed to the inner cavity and has a positioning notch concavely arranged toward the suction nozzle side; oil-conducting cotton, the oil-conducting cotton is arranged in the positioning notch and is connected with the oil storage bin in abutment; the oil-conducting cotton is extended along the length direction of the inner cavity and is provided with a gap for accommodating the passage of airflow; a magnetic receptor, the magnetic receptor is fixedly arranged in the oil-conducting cotton.

[0006] Furthermore, the inner cavity is also provided with a glass fiber tube, and the glass fiber tube is sleeved on the support tube.

[0007] Furthermore, two positioning notches are symmetrically arranged.

[0008] Furthermore, the magnetic receptor is arranged in the middle of the oil-conducting cotton.

[0009] Furthermore, the thickness of the magnetic receptor is not greater than 0.1 mm.

[0010] Furthermore, the heating area of ​​the magnetic sensor is not less than 16 mm 2 .

[0011] The electronic cigarette comprises a cigarette shell and a concave cigarette chamber, and also comprises a heating coil arranged around the cigarette chamber, wherein the magnetic excitation frequency of the heating coil is 1-10 MHz and is used to heat the aforementioned electromagnetic heating atomizing cigarette cartridge.

[0012] Furthermore, the heating circuit of the heating coil includes an E-type inverter circuit or a F-type inverter circuit.

[0013] Furthermore, the heating coil is in the shape of a spiral tube.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the high-frequency electromagnetic heating atomizing cartridge adopts a non-contact energy conversion mode of electromagnetic heating, which avoids the risk of short circuit inside the cartridge, and has a larger heating area and a faster heating speed, which is suitable for the atomization of oily, water-based and mixed tobacco oils. The high-frequency electromagnetic heating atomizing electronic cigarette can efficiently realize the atomization of liquid tobacco oil through the coupling of the high-frequency alternating electromagnetic field generated by the large-area, lightweight sensor and the E / F class high-efficiency inverter circuit, which opens up a new direction for the design and application of electromagnetic heating electronic cigarettes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the longitudinal cross-section of a high-frequency electromagnetic atomization cartridge;

[0016] Figure 2 This is a schematic diagram of the transverse cross-section of a high-frequency electromagnetic atomization cartridge;

[0017] Figure 3 This is a schematic diagram of the coordination between the high-frequency electromagnetic atomization cartridge and the heating 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] like Figure 1 As shown, the high-frequency electromagnetic atomization cartridge includes a nozzle 101, a shell 102, an oil storage tank 105 and an electromagnetic atomization core module, and the electromagnetic atomization core module includes a support tube 103, oil-conducting cotton 106 and a magnetic receptor 108. The inner cavity of the shell 102 is along the length direction ( Figure 1The air passage 103 is provided in the inner cavity (vertically) and connected to the suction nozzle 101, including the first air passage 109, the second air passage 110, and the third air passage 111 in sequence. The electromagnetic atomization core module is fixed in the inner cavity, between the oil storage bin 105 and the air passage, the bottom of the support tube 103 is clamped on the annular protrusion of the outer shell 102, and a silicone sealing ring 104 is squeezed between the annular protrusion and the support tube 103. Two symmetrically arranged positioning notches 1031 are recessed at one end of the top of the support tube 103 facing the suction nozzle 101, and the two sides of the oil guide cotton 106 are respectively squeezed in the two positioning notches 1031 and abut against the oil storage bin 105. The oil storage bin 105 is provided with an oil outlet hole corresponding to the positioning notch 1031, which is used to connect the oil guide cotton 106 to the liquid smoke oil in the oil storage bin 105. The wrapped part of the oil guide cotton 106 is relatively thin, which is conducive to the atomization and release of the smoke oil. The support tube 103 only needs to have an opening at the upper section to hold the oil-conducting cotton to ensure that the oil is infiltrated and replenished, and there is no need to open a window on the tube wall (reducing processing costs).

[0021] like Figure 2 As shown, the annular support tube 103 is not completely filled with the oil-conducting cotton 106, and a gap is reserved to accommodate airflow to form a second airway 110, and the magnetic receptor 108 is fixedly arranged at the upper middle position of the oil-conducting cotton 106. In this embodiment, the cross-section of the high-frequency electromagnetic atomization cartridge is set to be similar to a rectangle.

[0022] In order to facilitate processing and assembly, a hollow glass fiber tube 107 is also included, which is sleeved on the outside of the support tube 103 to form an extension effect, which is conducive to reducing the high cost and low efficiency caused by opening a window in the middle of the support tube 103. The glass fiber tube 107 is also abutted between the oil storage tank 105 and the airway, and is located above the support tube 103.

[0023] In this embodiment, a variety of types of e-liquids can be used in the oil storage bin 105. By adding liquid substances such as water, alcohol, or other polar solvents to the e-liquid, the atomization temperature range of the e-liquid can be expanded, and the initial atomization temperature can be lowered, thereby enriching the atomization level and expanding the category of e-liquids, such as oily, water-based, and mixed types, to meet the needs of different users. Adding wine or beverages can increase the diversity of flavors, bringing users richer tastes and more personalized choices. Since this patent uses induction magnetic heating, the electromagnetic atomization core module has no distinction between positive and negative poles, and there are no safety hazards such as short circuits, arc discharges, and leakage. It also eliminates problems such as core sticking, corrosion, and oil leakage caused by local overheating.

[0024] The electromagnetic atomization core module of this embodiment adopts a high-efficiency, large-area, lightweight sensor to increase the atomization efficiency. In electromagnetic heating, the eddy current effect is generated on the surface of the heating element (sensor), and its heating efficiency has nothing to do with the resistance value of the heating element, but is mainly affected by its surface area and heat capacity. In order to achieve fast and efficient atomization, this patent optimizes the structure of the sensor: on the one hand, by increasing the heating area, by increasing the surface area of ​​the sensor, the contact area with the oil-conducting cotton 106 can be increased, thereby improving the heat transfer efficiency. The heating area of ​​the sensor in this patent is designed to be no less than 16mm 2 , which is significantly higher than the heating area of ​​the metal mesh core in commercially available products. On the other hand, by reducing the thickness, by reducing the thickness of the receptor, its specific heat capacity can be reduced, its own heat absorption consumption can be reduced, and more energy can be used to heat the atomized substance. This patent sets the thickness of the receptor in the range of 0.04-0.1mm, which minimizes heat loss while ensuring structural strength. Traditional mesh cores are limited by resistance and volume factors, and it is difficult to achieve large area and thin design at the same time. This design utilizes the characteristics of electromagnetic heating and breaks through this limitation through optimized design, achieving a large area and thinness of the heating element, thereby significantly improving the atomization efficiency.

[0025] After many tests, considering that the heating temperature can be raised to 230°C, resulting in hot and cold cycles, the support tube 103 uses heat-resistant glass, including high borosilicate glass, silica glass, and modified derivatives based on these glasses. These glasses have a low thermal expansion coefficient, high chemical stability and high transparency, and are suitable for the application needs of this embodiment. In addition, at least three effects can be achieved: (1) replacing the metal tubular structure to eliminate the electromagnetic shielding effect; (2) used to carry and fix the oil-conducting cotton and the sensor, and no deformation occurs during use; (3) used to isolate most of the oil storage cotton to prevent leakage.

[0026] In other embodiments, in order to achieve more optimized performance and withstand more than 10,000 hot and cold cycles, the support tube 103 uses oxide-modified high borosilicate glass, that is, zirconium oxide (ZrO2) is added to high borosilicate glass to improve its thermal shock resistance, which makes it less likely to break under thermal shock. A specific composition ratio is: silicon dioxide (SiO2) 75%, diboron trioxide (B2O3) 16%, zirconium oxide (ZrO2) 3%, aluminum oxide (Al2O3) 1%, sodium oxide (Na2O) 3%, potassium oxide (K2O) 2%.

[0027] Embodiment 2

[0028] The electronic cigarette using the high-frequency electromagnetic atomization cartridge described in the first embodiment includes a cigarette housing and a concave cigarette chamber, such as Figure 2, and also includes a heating coil 2 arranged around the cigarette bin. The heating coil 2 adopts a flat solenoid coil with a cross-section that is approximately rectangular. The magnetic receptor 108 is designed to be a thinner sheet with a base thickness of 0.09 mm. It is placed in the center of the solenoid and parallel to the outer wall of the coil.

[0029] The magnetic excitation frequency of the heating coil is 1-10 MHz. In one implementation, the heating circuit of the heating coil 2 includes a class E inverter circuit. Class E power amplifiers are generally known, such as described in the article "Class-E RF Power Amplifiers" written by Nathan O.Sokal and published in the bimonthly magazine OEX of the American Radio Relay League (ARRL) in Newington, CT, USA, January / February 2001, pages 9-20. Class E power amplifiers are advantageous in operating at high frequencies and have a simple circuit structure with a minimum number of components (for example, only one transistor switch is required, which is advantageous compared to a class D power amplifier including two transistor switches, and the control method of the two transistor switches must ensure that one of them is cut off while the other is turned on at high frequencies). In addition, class E power amplifiers are known for the minimum power dissipation in the switching transistor. Preferably, the class E power amplifier is a single-ended first-order class E power amplifier having only a single transistor switch. The transistor switch of the class E power amplifier can be any type of transistor and can be implemented as a bipolar transistor (BJT). However, more preferably, the transistor switch is embodied as a field effect transistor (FET), such as a metal oxide semiconductor field effect transistor (MOSFET) or a metal semiconductor field effect transistor (MESFET).

[0030] In another implementation, the heating circuit of the heating coil 2 includes a class F inverter circuit, and the class F power amplifier based on harmonic control includes a transistor, the drain and gate of the transistor are respectively connected to a bias network, the input matching network is connected to the gate of the transistor, the drain of the transistor is connected in series with a capacitor for maintaining circuit stability and a harmonic control network, and then connected to the load, and a resonant structure is connected in parallel at both ends of the load. The class F amplifier can approach the theoretical 100% drain efficiency by adjusting the drain voltage and current waveforms.

[0031] When the performance of class E and F power amplifiers is compared, one significant advantage of the E amplifier over the class F amplifier is its circuit topology, which incorporates the transistor switching device output parasitic capacitance as part of its circuit. Therefore, due to this, the output parasitic capacitance can appear in circuits such as class F and F. -1The Class E amplifier does not consume power, does not consider the effect of this capacitor, and does not require an elaborate resonant circuit to reduce the effect of this capacitance. In addition, as seen above, the Class E structure is relatively simple, consisting of only a few components (at least one filter that is smaller than in the Class F structure). -1 The E class structure receives all the benefits of its operating class with this simple circuit, whereas the F and F -1 Methods must combine increasing numbers of circuit elements in order to approximate this ideal Class F performance. On the other hand, because of their positive (i.e., transistor drain or collector) voltage and current waveform formatting, Class F amplifiers deliver higher power and promise higher efficiency than Class E amplifiers when using the same transistors under the same power supply conditions. To achieve this advantage, F and F -1 Class A circuits can be very complex and may use more components than Class E devices.

[0032] The magnetic induction intensity of the flat solenoid coil shows a trend of attenuation with the distance from the center of the coil, and reaches a peak at the center of the coil. The change in the magnetic field gradient inside the coil is closely related to the magnetic induction intensity, and is manifested as a gradual decrease with the increase in the distance from the center of the coil. The flat design adopted in this embodiment has two advantages: first, it can concentrate the magnetic flux density, thereby achieving strong coupling with the sheet-like receptor located in the center of the coil; second, the flat structure is conducive to the design of the oil cup into a flat shape, thereby increasing the capacity of the smoke oil, increasing the number of puffs available for inhalation, and giving greater flexibility in spatial configuration and diversity in the appearance of the smoking device.

[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. An electromagnetic heating atomizing cigarette 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, the inner cavity further comprises an oil storage bin arranged around the airway and an electromagnetic atomizing core fixedly arranged between the oil storage bin and the airway, characterized in that: The electromagnetic atomization core comprises: A support tube, the support tube is fixed to the inner cavity and has a positioning notch concavely formed toward the nozzle side; Oil-conducting cotton, which is arranged in the positioning notch and is in contact with the oil storage bin; the oil-conducting cotton is provided with a gap extending along the length direction of the inner cavity to accommodate airflow; A magnetic receptor is fixedly arranged in the oil-conducting cotton.

2. The electromagnetic heating atomizing cartridge according to claim 1, characterized in that: The inner cavity is also provided with a glass fiber tube, and the glass fiber tube is sleeved on the support tube.

3. The electromagnetic heating atomizing cartridge according to claim 2, characterized in that: The number of positioning notches is symmetrical.

4. The electromagnetic heating atomizing cartridge according to claim 3, characterized in that: The magnetic sensor is arranged in the middle of the oil-conducting cotton.

5. The electromagnetic heating atomizing cartridge according to claim 4, characterized in that: The thickness of the magnetic susceptor is not greater than 0.1 mm.

6. The electromagnetic heating atomizing cartridge according to claim 5, characterized in that: The heating area of ​​the magnetic sensor is not less than 16 mm 2 .

7. An electronic cigarette, comprising a cigarette housing and a concave cigarette chamber, characterized in that: It also includes a heating coil arranged around the cigarette bin, the magnetic excitation frequency of the heating coil is 1-10 MHz, and is used to heat the electromagnetic heating atomizing cigarette cartridge as described in any one of claims 1 to 6.

8. The electronic cigarette according to claim 7, characterized in that: The heating circuit of the heating coil includes an E-class inverter circuit.

9. The electronic cigarette according to claim 7, characterized in that: The heating circuit of the heating coil includes a class F inverter circuit.

10. The electronic cigarette according to claim 7, characterized in that: The heating coil is in the shape of a spiral tube.

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