Cartridge replacement type electromagnetic atomization smoke cartridge and atomization system

Abstract

The invention provides a cartridge changing type electromagnetic atomization cartridge atomization system which comprises a cartridge shell and a tobacco tar cavity formed in the cartridge shell, the cartridge shell is provided with a cigarette holder and a heating end on the opposite side, and the heating end extends out of the cartridge shell; the cigarette cartridge further comprises an air channel penetrating through the cigarette cartridge shell from the heating end to the cigarette holder, and the tobacco tar cavity is arranged around the air channel. The heating end part is provided with liquid guide cotton and a magnetic heating receptor which are located in the cartridge shell, the magnetic heating receptor is provided with a hollow cavity communicated with the air channel so as to allow air flow to pass through, the liquid guide cotton is wound on the magnetic heating receptor and abuts against the cartridge shell, and the two ends of the magnetic heating receptor are connected with the cartridge shell through sealing rings; a liquid guide groove is formed between the tobacco tar cavity and the liquid guide cotton and is formed by a sealing ring and the cigarette cartridge shell. And the heating body has the advantages of no temperature sensor, fast heating body temperature rise, real-time and accurate temperature measurement and control, higher safety and the like.

Description

Technical Field

[0001] The present invention relates to the field of electromagnetic atomization of electronic cigarettes, and in particular to a cartridge-changing electromagnetic atomization cigarette cartridge and a cartridge-changing electromagnetic atomization system. Background Art

[0002] In the field of electronic cigarette atomization, the main mechanism for heating and atomizing 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 ceramic atomizer core or metal mesh core is placed in the oil cup containing liquid e-liquid as a heating element, and is electrically connected to the circuit board assembly (PCBA) through magnetic electrodes or lead welding. The pressure switch (such as a microphone) is triggered by the change in the airflow action of the smoker, or the instantaneous heating is started by a key switch, and the liquid e-liquid is quickly heated and atomized to produce an aerosol, thereby providing the user with nicotine intake in the e-liquid.

[0003] The existing ceramic atomizer core solution involves complex processes, including porous ceramic base molding, thick film circuit printing and sintering. In the assembly process of electronic cigarettes containing ceramic atomizer cores, it is necessary to design electrode structures to achieve electrical connection and minimize contact resistance, and the raw material and assembly costs are high. The existing metal mesh core solution usually uses a slender stainless steel base tube to carry the resistive heating wire or heating mesh and weld the leads to form an assembly. The stainless steel base tube requires multiple openings and multiple machining and polishing passivation, resulting in high material and processing costs. In addition, repeated heating will produce a thin layer of oxide on its surface, which will chemically react with the liquid smoke oil and affect the atomization performance.

[0004] The present invention proposes a cartridge-changing electromagnetic atomizing electronic cigarette, which aims to solve the above-mentioned problems and achieve efficient and accurate temperature control through non-contact electromagnetic induction heating to improve user experience. Summary of the invention

[0005] In order to solve the above-mentioned problems of the prior art, the present invention provides a replaceable electromagnetic atomizing cigarette cartridge, including a cigarette cartridge shell and an internal smoke oil chamber, the cigarette cartridge shell having a mouthpiece and a heating end on the opposite side, the heating end extending out of the cigarette cartridge shell; it also includes an airway that runs through the cigarette cartridge shell from the heating end to the mouthpiece, and the smoke oil chamber is arranged around the airway; the heating end is provided with liquid guiding cotton and a magnetic heating receptor located in the cigarette cartridge shell, the magnetic heating receptor has a hollow cavity connected to the airway to allow airflow to pass through, the liquid guiding cotton is arranged around the magnetic heating receptor and abuts against the cigarette cartridge shell, and the two ends of the magnetic heating receptor are connected to the cigarette cartridge shell through a sealing ring; a liquid guiding groove is provided between the smoke oil chamber and the liquid guiding cotton, and the liquid guiding groove is formed by the sealing ring and the cigarette cartridge shell.

[0006] Furthermore, the magnetic heating receptor is configured as an annular or arc-shaped cylinder, and is hollow inside to form an air flow channel.

[0007] Furthermore, the annular or arc-shaped cylindrical side has an opening, and the liquid-conducting cotton covers the opening.

[0008] Furthermore, an air hole connected to the air flow channel is formed on the magnetic heating receptor.

[0009] Furthermore, the sealing ring is respectively in contact with the cigarette cartridge housing, the magnetic heating receptor and the liquid-conducting cotton to form a liquid-conducting groove.

[0010] Furthermore, the liquid-conducting cotton quilt is squeezed between the cigarette cartridge shell and the magnetic heating receptor, and the degree of squeezing is adjusted by the magnetic heating receptor to achieve smoke volume regulation.

[0011] The present invention also provides a cartridge-changeable electromagnetic atomization system, comprising the aforementioned cartridge-changeable electromagnetic atomization cigarette cartridge, and also comprising a cigarette rod with a recessed receiving portion, a coil is wound around the peripheral wall of the receiving portion, and the cartridge-changeable electromagnetic atomization cigarette cartridge is inserted into the receiving portion.

[0012] Further, the coil starts heating when it senses suction.

[0013] Furthermore, magnetic magnets are provided at the bottom of the replaceable electromagnetic atomizing cartridge and the bottom of the cigarette rod receiving portion.

[0014] Furthermore, the airflow enters the airway through the joint gap between the cigarette cartridge housing and the cigarette rod receiving portion or the air gap reserved inside the cigarette rod.

[0015] Compared with the prior art, the invention has the following beneficial effects: the electromagnetic atomization cartridge and atomization system with cartridge replacement function are used, which are activated after sensing the inhalation, and the magnetic heating sensor in the cartridge is coupled with the middle ring of the cigarette rod to generate eddy current heating, thereby atomizing the tobacco oil in the liquid-guiding cotton. This design changes the traditional resistance or contact heating method, and thus has the advantages of no temperature sensor, fast heating of the heating element, real-time accurate temperature measurement and temperature control, and greater safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the cartridge-changing electromagnetic atomization system;

[0017] Figure 2 This is a schematic diagram of the structure of the replaceable electromagnetic atomizer cartridge;

[0018] Figure 3 It is a structural schematic diagram of the magnetic heating susceptor of Example 1;

[0019] Figure 4 This is a schematic diagram of the processing of the magnetic heating susceptor of Example 1;

[0020] Figure 5 This is a schematic diagram of the structure of a magnetic heating sensor according to Embodiment 2;

[0021] Figure 6 is a magnetization curve diagram of the magnetic heating susceptor of Example 2;

[0022] Figure 7 This is the manufacturing method of the magnetic heating susceptor of Example 2. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] like Figure 1 The cartridge-changing electronic cigarette atomization system shown in the figure comprises a cigarette rod 1 and a cartridge-changing electromagnetic atomization cigarette cartridge 2 (referred to as "cartridge"). A receiving portion 101 is recessed on the upper part of the cigarette rod 1 to receive the replaced cigarette cartridge, a coil 102 is wound around the peripheral wall of the receiving portion 101, and the cartridge-changing electromagnetic atomization cigarette cartridge 2 is inserted into the receiving portion 101. A magnetic magnet is provided at the bottom of the receiving portion 101 in the cigarette rod 1 to absorb and fix the cigarette cartridge.

[0025] The cigarette cartridge 2 includes a cigarette cartridge housing and an internal cigarette oil chamber, Figure 1 and Figure 2 . The shell of the cigarette cartridge is divided into a lower shell 206 and an upper shell 208, which are combined together by physical bonding methods such as buckling, bonding, ultrasound, etc. In order to minimize the leakage of smoke oil, the middle of the joint is sealed by a first silicone ring 207. A heating end is provided on the other side of one end of the cigarette cartridge mouthpiece, and its specific function is set to extend the heating end out of the cigarette cartridge shell to form an outwardly protruding structure. The upper shell 208 is used as a mouthpiece for the user to smoke, and a smoke oil chamber 209 with a volume is provided in the lower shell 206. An airway 210 is reserved in the longitudinal direction inside the cigarette cartridge shell, and the airway 210 is connected to the suction port 212 in the mouthpiece. The airway 210 runs through the entire cigarette cartridge so that the airflow can flow from the bottom to the top. The cross-sectional shape of the airway 210 can be circular, elliptical, triangular, square or other shapes, and the smoke oil chamber 209 arranged around the periphery of the airway 210 is set to be similar to a ring shape to increase the volume and facilitate atomization.

[0026] In the aforementioned heating end, it includes a ring-shaped magnetic heating receptor 202 and a liquid-conducting cotton 203. The magnetic heating receptor 202 is wound to form a hollow cylinder, and has a hollow cavity connected to the airway 210 to allow airflow to heat and flow through. The liquid-conducting cotton 203 is wound around the magnetic heating receptor 202 to form a full or partial covering, and when assembled into the cartridge shell, it also abuts against the cartridge shell to form a lateral fixation.

[0027] It should be noted that the liquid-conducting cotton 203 is usually squeezed between the lower shell 206 of the cartridge shell and the magnetic heating receptor 202, and the degree of squeezing is adjusted by the magnetic heating receptor 202 to achieve smoke volume regulation. Specifically, if a large amount of smoke and a large amount of smoke oil penetration are required, the equivalent outer diameter of the magnetic heating receptor 202 is made larger to severely squeeze the liquid-conducting cotton 203, forming a permeation channel with a smaller porosity; if a small amount of smoke and a small amount of smoke oil penetration are required, the equivalent outer diameter of the magnetic heating receptor 202 is made smaller to release the liquid-conducting cotton 203 or try not to pile up, forming a permeation channel with a larger porosity.

[0028] In accordance with the above, the magnetic heating receptor 202 is sealed and longitudinally fixed with the lower shell 206 through the second silicone ring 205 and the third silicone ring 204. Specifically, the second silicone ring 205 is sleeved on the first end of the magnetic heating receptor 202 to prevent it from falling off, and the other end of the second silicone ring 205 is fixed to the shell (surrounding the airway 210) near the smoke oil chamber 209. The second silicone ring 205 is a customized special shape and is arranged in the channel structure in a contour. A liquid guide groove 211 leading to the heating end is also provided at the junction of the smoke oil chamber 209 and the second silicone ring 205. Further, the second silicone ring 205 is respectively in contact with the lower shell 206, the magnetic heating receptor 202 and the liquid guide cotton 203 to form a liquid guide groove 211. Under the action of gravity, the smoke oil in the smoke oil chamber 209 is continuously deposited on the liquid guide cotton 203 through the liquid guide groove 211.

[0029] The third silicone ring 204 is sleeved on the second end of the magnetic heating receptor 202, and is basically arranged flush with the end position of the heating end, similar to the installation method of the second silicone ring 205, so as to fix it on the one hand and prevent the leakage of smoke oil on the other hand.

[0030] The longitudinal axes of the cigarette rod 1 and the cigarette cartridge 2 are basically coincident, the hollow cavity of the magnetic heating receptor 202 and the airway 210 are basically on the same axis, and the aerosol formed by heating flows toward the smoker along the arrows in the figure. Corresponding to the magnet 201 in the cigarette rod 1, a plurality of magnets 103 are provided at the bottom of the cigarette cartridge to complete the adsorption and fixation to prevent involuntary shedding during use.

[0031] In the specific atomization process, the general process is that when inhaling, the air pressure change in the airway causes the airflow sensor (microphone) or switch to trigger the control circuit module, and the control circuit module drives the coil to generate a high-frequency alternating electromagnetic field. That is, the coil starts heating when it senses suction, and the electromagnetic field couples with the magnetic receptor in the cigarette cartridge, inducing eddy currents in the receptor. The Joule heat generated by the eddy current causes the receptor to heat up rapidly, and transfers the heat to the nearby tobacco oil to quickly atomize it. The external airflow enters the airway through the joint gap between the cigarette cartridge shell and the cigarette rod receiving part, or the air gap reserved inside the cigarette rod, and the generated aerosol enters the user's mouth as shown by the dotted arrow in the figure.

[0032] Embodiment 1

[0033] The atomization system for the aforementioned cigarette cartridge, in this embodiment, the coil 102 is a spiral tubular coil wound with a copper strip, the thickness of the copper strip is 0.1mm, the width is 1.6mm, the winding pitch is 1.6mm, the number of winding turns is 5, the outer diameter of the coil is 12mm, and the frequency of the class E power amplifier resonant inverter circuit is fixed at 5MHz; this compact coil winding and high-frequency setting can make the circuit system work more efficiently, for example, up to 85%. In general, the smaller the volume surrounded by the coil, the higher the system resonant frequency, the higher its working efficiency, and the better the heating effect. Therefore, the present invention sets the internal volume surrounded by the coil to 600-20,000mm 3 Within the range, the operating frequency is set within the range of 100K-10MHz.

[0034] like Figure 3 As shown, the magnetic heating receptor 202 is a slender magnetic metal tube (cylindrical, annular, elliptical, etc.) with closed sides, and the liquid-conducting cotton 203 is completely or partially wound around the periphery. The inner diameter of the tube is 2.6mm, the length is 15mm, and the wall thickness is 0.1mm. Its structural schematic diagram shows that the tube wall 202a is made of a single alloy material of ferrite magnetic stainless steel SUS430, and its main chemical components include: chromium content of 17%, carbon content of 0.1%, silicon content of 0.5%, manganese content of 0.6%, nickel content of 0.03%, phosphorus content of 0.03%, iron as the balance, and its Curie temperature is about 770°C. A plurality of rectangular air holes 202b prepared by laser cutting are provided on the side for the introduction of smoke oil and the circulation of aerosol; the material of the liquid-conducting cotton 203 is preferably a high-temperature resistant cotton non-woven fabric, and its internal high-opening rate three-dimensional mesh cross-linked structure has strong adsorption and flame retardancy, meeting the functional requirements of the embodiment of the present invention.

[0035] Under the excitation of high-frequency alternating magnetic field, skin effect will be generated, that is, eddy current electrons mainly move within a few microns of the surface thickness of magnetic heating receptor 202. On the one hand, the thinner the wall thickness of magnetic heating receptor 202, the better, which can reduce its occupied volume and specific heat capacity, and reduce material costs; on the other hand, in terms of manufacturability, the forming processes such as rolling and tube drawing below 0.04mm are difficult. Therefore, the average wall thickness of magnetic heating receptor 202 is preferably set within the range of 0.04-0.2mm, which can achieve better practical results.

[0036] like Figure 4 As shown, the processing process of the magnetic heating susceptor 202 of this embodiment is as follows:

[0037] S1: Processing the metal sheet into a strip with a thickness of 0.15 mm and a width of 15 mm;

[0038] S2: bend the strip so that the curved ends are in contact and welded into a thick tube;

[0039] S3: multiple annealing and drawing to prepare a thin tube with a smaller inner diameter and thinner wall thickness;

[0040] S4: using a laser cutting method to prepare a plurality of air holes 202b on the tube wall;

[0041] S5: Cut the elongated tube transversely into metal tubes of desired length.

[0042] Embodiment 2

[0043] This embodiment proposes a Figure 5 The tubular magnetic receptor 202 with the non-closed side characteristic shown has an equivalent inner diameter of 3 mm and a length of 12 mm. The tube wall 202a has a thickness of 0.08 mm and is provided with a plurality of circular air holes 202b prepared by chemical etching, with a diameter of 1 mm. The tube wall 202a is provided with a long strip opening 202c, forming a non-closed structure. This configuration has a simple preparation process and low precision requirements and is suitable for batch and large-scale production. In actual use, it is still necessary to cover the gap or opening with a liquid-guiding cotton 203 to prevent leakage of smoke oil.

[0044] In one embodiment, the substrate 202a is made of an iron-nickel-based soft magnetic alloy 4J42 soft material, and its main chemical components include: 42% nickel content, 1% cobalt content, 0.05% carbon content, 0.30% silicon content, 0.80% manganese content, 0.1% aluminum content, and iron as the balance. The alloy has strong magnetism. Under the condition of 4,000A / m, the residual magnetic induction intensity Br is 0.99T, the coercive force Hc is 28.8A / m, and fast and strong eddy current heating can be achieved in a high-frequency alternating magnetic field. Moreover, the thermal conductivity of the material is 14.6W / (m·K), which can quickly transfer eddy current Joule heat to the liquid-conducting core 203 in contact with it.

[0045] It is further explained that the magnetization curve (MT, i.e. the relationship between the intensity emu / g and the absolute temperature K) of the 4J42 sensor alloy is as follows Figure 6As shown. This alloy is a strong magnetic metal, which always maintains strong and stable magnetism before 300°C, and can maintain strong and stable coupling with the high-frequency alternating magnetic field generated by the coil in the cigarette rod, and can work continuously. According to the peak-to-valley characteristics in the relationship between the magnetization intensity and the temperature change rate dM / dT and the temperature T, it can be obtained that its Curie temperature Tc is about 400°C. This lower Curie temperature can be used as a temperature control parameter of an electronic circuit system. Referring to the method mentioned by the inventor in patent application CN116491712A, the magnetic permeability of the soft magnetic alloy material will have an inflection point at about 100°C away from the Curie temperature Tc (i.e., the above-mentioned 300°C), and the magnetic permeability begins to decrease until it completely loses its magnetism at 400°C. This peak change characteristic is fed back by the coil as a signal, and is finally mapped into the current peak change characteristic of the circuit system, and is used as a reference for real-time temperature measurement and precise temperature control. Therefore, the temperature of the magnetic receptor 202 can be controlled at a consistent temperature value level during each puff, for example, to the left or right of this inflection point temperature of 300°C. Based on this, an accurate value can be set within the range of 200-350°C, which is just suitable for the atomization of common e-liquids.

[0046] Based on this method, the Curie point characteristics of the magnetic material and the change in coil impedance can be used to achieve precise temperature control. When the temperature of the sensor is close to its Curie temperature, the magnetic permeability drops sharply, the eddy current effect weakens, and the heat generation decreases, thereby achieving passive temperature control and preventing overheating. On the other hand, changes in sensor temperature will cause changes in coil impedance. The control circuit module indirectly measures the sensor temperature by monitoring the changes in coil impedance in real time, and dynamically adjusts the frequency, duty cycle and other parameters of the driving current to achieve active temperature control and maintain the atomization temperature within the optimal range.

[0047] like Figure 7 As shown, the processing process of the magnetic heating susceptor 202 of this embodiment is as follows:

[0048] S1: etching the metal plate through processes such as film coating, exposure, chemical etching and cleaning to form a predetermined large number of vent holes 202b;

[0049] S2: cutting into substrate units of a preset size;

[0050] S3: The strip is bent into a tube (with an open or incompletely closed gap).

[0051] 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.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cartridge-changing electromagnetic atomizing cigarette cartridge, comprising a cigarette cartridge housing and an internal cigarette oil chamber, characterized in that: The cartridge housing has a mouthpiece and a heating end on an opposite side, the heating end extending out of the cartridge housing; and also includes an airway running through the cartridge housing from the heating end to the mouthpiece, the oil chamber being arranged around the airway; The heating end is provided with a liquid-conducting cotton and a magnetic heating receptor in the shell of the cigarette cartridge. The magnetic heating receptor has a hollow cavity connected to the airway to allow airflow to pass through. The liquid-conducting cotton is wound around the magnetic heating receptor and abuts against the shell of the cigarette cartridge. Both ends of the magnetic heating receptor are connected to the shell of the cigarette cartridge through a sealing ring. A liquid guide groove is arranged between the smoke oil chamber and the liquid guide cotton, and the liquid guide groove is formed by a sealing ring and a smoke cartridge shell.

2. The replaceable electromagnetic atomizing cartridge according to claim 1, characterized in that: The magnetic heating receptor is configured as an annular or arc-shaped cylinder, and the interior is hollow to form an air flow channel.

3. The replaceable electromagnetic atomizing cigarette cartridge according to claim 2, characterized in that: The annular or arc-shaped cylindrical side has an opening, and the liquid-conducting cotton covers the opening.

4. The replaceable electromagnetic atomizing cigarette cartridge according to claim 1, characterized in that: The magnetic heating receptor is formed with an air hole which is connected with the air flow channel.

5. The replaceable electromagnetic atomizing cigarette cartridge according to claim 1, characterized in that: The sealing ring is respectively in contact with the cigarette cartridge housing, the magnetic heating receptor and the liquid guiding cotton to form a liquid guiding groove.

6. The cartridge-changing electromagnetic atomizing cigarette cartridge according to claim 1, characterized in that: The liquid-conducting cotton quilt is squeezed and arranged between the cigarette cartridge shell and the magnetic heating receptor, and the squeezing degree thereof is adjusted by the magnetic heating receptor to achieve smoke volume regulation.

7. A cartridge-changing electromagnetic atomization system, characterized in that: It comprises the replaceable electromagnetic atomizing cigarette cartridge as claimed in any one of claims 1 to 6, and also comprises a cigarette rod with a recessed receiving portion, a coil is wound around the peripheral wall of the receiving portion, and the replaceable electromagnetic atomizing cigarette cartridge is inserted into the receiving portion.

8. The cartridge-changing electromagnetic atomization system according to claim 7, characterized in that: The coil initiates heating when it senses a puff.

9. The cartridge-changing electromagnetic atomization system according to claim 7, characterized in that: Magnetic magnets are provided at the bottom of the cartridge-changing electromagnetic atomizing cigarette cartridge and the bottom of the cigarette rod receiving part.

10. The cartridge-changing electromagnetic atomization system according to claim 7, characterized in that: The airflow enters the airway through the joint gap between the cigarette cartridge housing and the cigarette rod receiving portion or the air gap reserved inside the cigarette rod.

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