An electromagnetic induction heating electronic cigarette with continuous supply of gel-state tobacco oil strips

Abstract

The invention relates to an electromagnetic induction heating electronic cigarette for continuously supplying gel-state tobacco oil strips, comprising: a tobacco device housing (1); a control circuit board (7), a battery (8), and a smoke channel (9) are arranged therein; a placement reel (2) on which a roll of gel-state tobacco oil strip (3) is wound, the gel-state tobacco oil strip (3) is unwound from the placement reel (2), and is rewound by an active reel (4) after being turned by a driven reel (6); an electromagnetic coil (5) located at any position of the gel-state tobacco oil strip from unwinding to rewinding, and the gel-state tobacco oil strip (2) passes through the interior of the electromagnetic coil; the gel-state tobacco oil strip (3) comprises a base strip (31), a magnetic receptor particle layer (34) spread on the base strip (31), and a gel-state tobacco oil layer (32) spread on the magnetic receptor particle layer (34). The magnetic receptor particle layer improves the adhesion strength of the gel-state tobacco oil layer and can be used as an electromagnetic induction receptor to generate electromagnetic heat.

Description

Technical Field

[0001] The invention belongs to the field of electronic cigarettes, and in particular relates to an electromagnetic induction heating electronic cigarette which continuously supplies gel-state cigarette oil strips. Background Art

[0002] People's demand for tobacco harm reduction has driven the birth and rapid development of electronic cigarettes. Electronic cigarettes are made by dissolving nicotine and flavors in polyol solvents such as glycerin or propylene glycol to make smoke oil, which is then filled into electronic cigarette smoking devices. The smoke oil is transferred to the atomizer in the smoking device through conductive elements such as oil-conducting cotton, where the smoke oil is atomized by electric heating elements to form smoke similar to traditional cigarettes for users to inhale.

[0003] However, since the e-liquid is in liquid form, the e-liquid container, e-liquid guide cotton and electric heating element of the electronic cigarette smoking device are inevitably not well sealed during the actual assembly due to the inaccurate and consistent processing dimensions of the parts, or although they are assembled with sealing at the factory, the sealing is destroyed due to vibration and bumps during subsequent storage and use, so there will be more or less leakage, affecting the customer experience. For this reason, some people have proposed to use gel-state e-liquid instead of liquid e-liquid as a smoking material to solve the leakage problem. In the gel-state e-liquid that has been reported, a gelling agent is often used to solidify the liquid e-liquid into a gel (jelly or solid). The gel can usually undergo a thermally reversible phase change, that is, it solidifies into a gel at low temperature, and can be liquefied after being heated, and solidified into a gel again after cooling.

[0004] However, gel-state e-liquid has a new problem in actual use: if only a small amount of disposable gel-state e-liquid block is used, it will be heated and melted into liquid once and then completely heated and atomized, so each time it is only enough for the user to take a few consecutive puffs (for example, 7-8 puffs), which cannot meet the user's long-term and anytime puffing needs (usually, electronic cigarettes using liquid e-liquid can provide users with hundreds to thousands of puffs, depending on the amount of liquid e-liquid stored in it, and users can power on and heat it at any time). Moreover, installing a new gel-state e-liquid block each time will also bring operational troubles, and also lose the original intention of using gel-state e-liquid to replace liquid e-liquid to prevent leakage. However, if a large block of gel-state e-liquid is used, although it is completely melted enough for users to take hundreds to thousands of puffs, there are several problems as follows:

[0005] 1) In order to continuously supply e-liquid to the heating element like conventional liquid e-cigarettes, large chunks of gel e-liquid have to be heated and melted in full or in large part each time, so as to be converted into sufficient fluid liquid e-liquid (since it is not known in advance how many puffs the user will take, the amount of liquid e-liquid stored must at least exceed the amount of liquid e-liquid required for the user to take 7-8 puffs in one round), to ensure that it is sufficient to be continuously supplied to the heating element. However, after the user stops puffing in this round, the stored liquid e-liquid has to be condensed back into the gel state and re-converted in the next round of puffing. After being heated and melted into liquid, the next round of standby liquid oil has to condense back to a gel state after the next round of puffing stops, and is heated and melted again in the next round of puffing... In this repeated heating, melting, cooling and condensing process, the electric energy of the electric heating element is wasted, and a sense of delay is caused when the user draws for the first time (because a large amount of oil must be heated and melted during the first puff to ensure that enough oil is supplied to the heating element through the oil-conducting cotton quilt). What's more, certain chemical substances in the oil, such as flavors and fragrances, may also be pyrolyzed and deteriorated due to repeated heating, causing unpleasant odor when drawing.

[0006] 2) Although there are many gelling agents that can gel liquid e-liquid, there are not many gelling agents with thermally reversible phase change characteristics, which also seriously limits the selection of gelling agents.

[0007] 3) If only the required amount of gel-state e-liquid is heated and liquefied each time instead of heating and liquefying almost all of the gel-state e-liquid each time, then how to continuously and quantitatively supply the gel-state e-liquid to the heater becomes a technical problem that needs to be solved urgently, that is, how to supply the next quantitative amount of gel-state e-liquid to the heating element after the previous amount of gel-state e-liquid is heated and atomized. When liquid e-liquid is used as a smoking material, continuous supply is not a problem due to the fluidity of the e-liquid. However, the gel-state e-liquid is in a jelly or solid form and does not have fluidity, so how to quantitatively and continuously supply it becomes a big problem. If the gel-state e-liquid itself is heated and melted into liquid and then flows to the heating element through the oil guide cotton, then only the gel-state e-liquid near the heating element can be melted, while the gel-state e-liquid far away from the heating element cannot be heated and melted, and naturally will not be supplied to the heating element, and cannot be atomized, causing the interruption of suction, which seriously affects the user experience.

[0008] 4) Gel-state e-liquid may dry out or be oxidized by oxygen during long-term storage, which will shorten the shelf life and affect the smoking taste. In addition, if the gelling agent used is a non-gasifying gelling agent, then after the e-liquid is heated and gasified, the gelling agent component residue will remain, which may contaminate the internal parts of the smoking device.

[0009] In order to solve the above problems, the inventor has applied for a patent "An electronic cigarette smoking set capable of continuously supplying gel-state e-liquid", see application number CN2020115050988 for details, wherein a gel-state e-liquid layer is spread on a polymer base tape to form a gel-state e-liquid strip, and then the e-liquid strip is rolled into a roll and installed on the placement reel of the smoking device, and the end of the strip is pulled out and fixed to the active reel after being turned by the driven reel. When the user inhales, the micromotor starts, the active reel rotates and winds the strip, and the driven reel rotates passively, pulling the strip out from the placement reel, passing through the planar heater, the gel-state e-liquid is heated and liquefied and releases smoke. However, it is found in practice that, because polymer base tapes such as polypropylene, polyvinyl chloride or polytetrafluoroethylene are usually hydrophobic and have smooth surfaces, while gel-state oil is hydrophilic, the surface properties of the two are very different, resulting in the gel-state oil layer usually not being firmly applied to the polymer base tape, which is manifested as the gel-state oil layer easily falling off or failing to move synchronously with the polymer base tape during the unwinding, turning or winding of the tape, causing operational failure. Applying an adhesive layer to the polymer base tape may solve the above problems, but the adhesive will produce additional odor when heated, which may affect the taste of the smoke, and it is not easy to find an adhesive that is hydrophobic on one side and hydrophilic on the other side, and even if it is found, its cost may not be low.

[0010] Therefore, it is necessary to find new ways to solve the above-mentioned new problems. Summary of the invention

[0011] The first aspect of the present invention provides an electromagnetic induction heating electronic cigarette that continuously supplies gel-state tobacco oil strips, comprising:

[0012] A smoking device housing (1) is provided with a control circuit board (7), a battery (8), and a smoke passage (9);

[0013] A placement reel (2) is provided on which a gel-state tobacco oil strip (3) is wound. The gel-state tobacco oil strip (3) is unwound from the placement reel (2), and is rewound by the active reel (4) after being turned by the driven reel (6);

[0014] an electromagnetic coil (5), which is located at any position of the gel-state tobacco oil strip from unwinding to winding, and the gel-state tobacco oil strip (2) passes through the inside thereof;

[0015] The gel-state tobacco oil strip (3) comprises a base strip (31), a magnetic receptor particle layer (34) spread on the base strip (31), and a gel-state tobacco oil layer (32) spread on the magnetic receptor particle layer (34).

[0016] The base tape 31 can be any tape that can withstand the atomization temperature of the e-liquid (e.g., 180-220°C), such as a paper tape, a polymer tape, etc., which has a certain flexibility and can be unwound and rewound. The optional polymer is polyethylene terephthalate, polyamide, polysulfone, polyvinyl chloride, polytetrafluoroethylene, etc. A preferred tape is a polytetrafluoroethylene tape, which can withstand high temperatures above 250°C and can maintain strong flexibility even at high temperatures without releasing any odor, and can withstand various chemical components in the e-liquid.

[0017] The magnetic receptor particle layer 34 is a layer of very dense and fine magnetic receptor particles, such as the fine magnetic receptor powder used on the surface of the plastic strip on the traditional magnetic tape for recording sound. The magnetic receptor powder can be firmly attached to the polymer base tape by the same or similar process as the production of magnetic tape. This is a very mature process and will not be described in detail.

[0018] Due to the hydrophilicity of the magnetic receptor particle layer, when the gel-state tobacco oil layer is spread thereon, the latter can be easily and firmly attached to the surface of the former, and its bonding strength is far greater than when the gel-state tobacco oil layer is directly spread on the polymer base tape.

[0019] The electromagnetic coil (5) is used to generate an alternating magnetic field under an alternating current. When the gel-state tobacco oil strip 3 passes through the inside thereof, the magnetic receptor particle layer 34 in the strip generates heat due to the electromagnetic eddy current effect induced by the alternating magnetic field. This is a conventional electromagnetic induction heating principle and will not be described in detail. The cross section of the electromagnetic coil can be a conventional circle, and more preferably a flat rectangle, so as to adapt to the strip-like magnetic receptor particle layer of the present invention.

[0020] Preferably, the end of the smoking device housing 1 further has a mouthpiece 10, which is in airflow communication with the smoke channel 9. The shapes of the smoke channel 9 and the mouthpiece 10 are not limited, and condensation materials or filter materials can be arranged therein as required.

[0021] The driven reel 6 and / or the active reel may be a toothless reel (the gel-state e-liquid strip is driven to move purely by the friction of the reel surface) or a gear-type reel. Preferably, the driven reel 6 and / or the active reel 4 are gear-type reels, and accordingly, the gel-state e-liquid strip 3 has a plurality of parallel rows of holes 33, the positions of the holes correspond to the gear teeth of the gear-type reel, so that the gear-type reel drives the gel-state e-liquid strip to move and unwind and rewind smoothly.

[0022] The gel-state e-liquid layer 32 may be a reversible phase-change gel-state e-liquid layer or an irreversible phase-change gel-state e-liquid layer.

[0023] The holes 33 at least penetrate the base band 31 and serve as the rotation force application point of the gear teeth of the gear-type scroll. Preferably, the holes penetrate the entire thickness direction of the gel-state e-liquid strip, so that the holes can not only serve as the rotation force application point of the gear teeth of the gear-type scroll, but also promote the release of internal smoke after the gel-state e-liquid layer is heated. There is no additional restriction on the shape and distribution density of the holes.

[0024] Among them, the electronic cigarette smoking set of the present invention also includes a micromotor (not shown in the figure) placed inside the smoking set housing, and the micromotor drives the active reel 4 to rotate, and the speed can be independently determined according to the length of the gel-state tobacco oil strip required for each puff. Such a micromotor and its speed control method are conventional choices for those skilled in the art, so they are not repeated here. Preferably, the electronic cigarette is also provided with a suction sensor, which senses the user's puffing action, sends a power-on signal to the micromotor and the electric heater when the user puffs, and sends a power-off signal to the micromotor and the electric heater when the user is puffing or stops puffing.

[0025] The second aspect of the present invention relates to an electromagnetic induction smoking method for continuously supplying gel-state tobacco oil strips, the method comprising the following steps:

[0026] The active reel (4) rotates and drives the driven reel (6) to continuously unwind the gel-state oil strip (3) from the placement reel (2). When the unwound gel-state oil strip (3) passes through the electromagnetic coil (5), the magnetic receptor particle layer (34) therein generates heat under the action of the alternating magnetic field, heating the gel-state oil layer (32) and releasing smoke. The heated gel-state oil strip (3) is rolled onto the active reel (4). The released smoke is sucked into the user's mouth through the smoke channel 9 and the suction nozzle 10.

[0027] Beneficial effects of the present invention:

[0028] 1. The present invention makes the traditional block or stick gel-state tobacco oil into strip rolls, and cooperates with the unwinding and winding devices in the tobacco utensil to quantitatively and continuously supply the gel-state tobacco oil strips to the flat surface for heating.

[0029] 2. Electromagnetic induction heating, high heating efficiency, timely and sufficient atomization.

[0030] 3. The gel-state e-liquid strip is heated only once and does not need to undergo repeated melting and solidification. This not only maximizes the use of the electrical energy of the heating element, but also allows for atomization with almost no delay, avoiding the user's feeling of lag in suction, and preventing the chemical substances in the gel-state e-liquid from deteriorating due to repeated heating, reducing the possibility of producing odor.

[0031] 4. Also, because the gel-state e-liquid strip is only heated once and does not need to undergo repeated melting and solidification, it is not necessary to require the obtained gel-state e-liquid to have a thermally reversible solid-liquid phase change property. This greatly expands the range of choices for usable gelling agents, allowing some gelling agents that do not have a thermally reversible solid-liquid phase change property to be used.

[0032] 5. When not in use, the gel-like oil layer is rolled into a roll, which protects it inside the roll and prevents it from drying or oxidizing, thus extending its shelf life. Correspondingly, the non-gasified gel residue after heating is still on the base tape and is rolled into a roll, which is discarded after use, so as not to be scattered everywhere and contaminate the smoking device.

[0033] 6. The present invention adds a magnetic receptor particle layer 34 between the polymer base band 31 of the gel-state oil strip and the gel-state oil layer 32, thereby improving the adhesion strength of the gel-state oil layer. The magnetic receptor particle layer also generates heat as a magnetic induction receptor of the subsequent electromagnetic coil 5. Since the magnetic receptor particle layer is in direct contact with the gel-state oil layer 32, the heating efficiency is higher than that of the original method of using a planar heater to heat the gel-state oil layer through the polymer base band. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic structural diagram of the electromagnetic induction heating electronic cigarette that continuously supplies gel-state tobacco oil strips according to the present invention.

[0035] Figure 2 It is a schematic diagram of the structure of the gel-state e-liquid strip of the present invention.

[0036] The meanings of the reference numerals in the figures are as follows:

[0037] 1-smoking device shell; 2-reel placement; 3-gel-state tobacco oil strip; 4-active reel; 5-electromagnetic coil; 6-driven reel; 7-control circuit board; 8-battery; 9-smoke channel; 10-mouthpiece; 31-base band; 32-gel-state tobacco oil layer; 33-holes; 34-magnetic receptor particle layer. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0039] Example 1

[0040] Use of the present invention Figure 1 The electromagnetic induction heating electronic cigarette for continuously supplying gel-state tobacco oil strips as shown in the above invention content, wherein the active reel 4 and the driven reel 6 are both gear-type reels.

[0041] The basic formula of liquid e-liquid is as follows: glycerin is used as the main component of the aerosol, 1.5wt% of nicotine and 2.4wt% of mint flavor are added thereto, and conventional additives in the preparation of liquid e-liquid such as flavoring agents, anti-sweetness agents, food-grade preservatives, food-grade colorants, etc. can be added to the liquid e-liquid as needed.

[0042] Add a gelling agent to the liquid e-liquid under the condition of heating to 80°C and stir, the gelling agent is agarose, and the amount added is 9.5wt% of the liquid e-liquid, stir evenly, and then apply it to a pre-punched glass fiber reinforced polyamide base tape with a thickness of 0.1mm, a width of 3mm, and a length of 1000m, with a coating thickness of 0.1mm, condense to room temperature, and obtain a gel e-liquid strip 3. The gel e-liquid has a thermally reversible solid-liquid phase change property. The gel e-liquid strip 3 is rolled into a roll and installed on the Figure 1 The end of the strip is drawn out from the roll and fixed to the driving roll 4 after being turned by the driven roll 6. The above work can be installed before the smoking device leaves the factory, and can be replaced and installed by the customer.

[0043] When the user needs to smoke, the power is turned on, and the active reel 4 rotates under the drive of the micromotor, thereby driving the driven reel 6 to continuously unwind the gel-state oil strip 3 from the placement reel 2. When the unwound gel-state oil strip 3 passes through the inside of the electromagnetic coil 5, the iron oxide powder therein heats to about 190°C due to the eddy current effect under the action of the alternating magnetic field, and the gel-state oil layer is heated from solid to liquid, and the liquid oil is heated and volatilized to release smoke. Several micromotor speed control options and heating power control options are provided for users to choose, so that users can independently control the amount of smoke released. The heated gel-state oil strip 3 is rolled onto the active reel 4, and the released smoke is sucked into the user's mouth through the smoke channel 9 and the suction nozzle 10. The smoking device can respond to the user's operation in real time, start and continuously and quantitatively supply and heat the gel-state oil strip at any time, and can also stop supplying and heating at any time, with almost no time delay in response time. After the user takes hundreds of puffs, the current roll of gel-state tobacco oil strip 3 is used up, and the user can open the smoking device shell 1 and replace it with the next roll of gel-state tobacco oil strip.

[0044] It was found during use that even under the extreme condition of strong rolling force when the active reel rotates at the highest speed, the gelled tobacco layer did not fall off from the base belt or the two did not move synchronously.

[0045] Example 2

[0046] Use of the present invention Figure 1 The electromagnetic induction heating electronic cigarette for continuously supplying gel-state tobacco oil strips as shown in the above invention content, wherein the active reel 4 and the driven reel 6 are both gear-type reels.

[0047] The basic formula of liquid e-liquid is as follows: glycerin is used as the main component of the aerosol, 1.5wt% of nicotine and 2.4wt% of mint flavor are added thereto, and conventional additives in the preparation of liquid e-liquid such as flavoring agents, anti-sweetness agents, food-grade preservatives, food-grade colorants, etc. can be added to the liquid e-liquid as needed.

[0048] Add a gelling agent to the liquid e-liquid under the condition of heating to 80°C and stirring. The gelling agent is gellan gum (also known as gellan gum), and the amount added is 7.6wt% of the liquid e-liquid. After stirring evenly, apply it to a pre-punched polytetrafluoroethylene tape with a thickness of 0.1mm, a width of 3mm, and a length of 1500mm, which has been firmly coated with iron oxide powder, by a cast coating method. The coating thickness is 0.1mm, and condensed to room temperature to obtain a gel-state e-liquid strip 3. The gel-state e-liquid also has a thermally reversible solid-liquid phase change property. The gel-state e-liquid strip 3 is rolled into a roll and installed on the Figure 1 The end of the strip is drawn out from the roll and fixed to the driving roll 4 after being turned by the driven roll 6. The above work can be installed before the smoking device leaves the factory, and can be replaced and installed by the customer.

[0049] When the user needs to smoke, the power is turned on, and the active reel 4 rotates under the drive of the micromotor, thereby driving the driven reel 6 to continuously unwind the gel-state oil strip 3 from the placement reel 2. When the unwound gel-state oil strip 3 passes through the inside of the electromagnetic coil 5, the iron oxide powder therein heats to about 190°C due to the eddy current effect under the action of the alternating magnetic field, and the gel-state oil is heated from solid to liquid, and the liquid oil is heated and volatilized to release smoke. Several micromotor speed control options and heating power control options are provided for users to choose, so that users can independently control the amount of smoke released. The heated gel-state oil strip 3 is rolled onto the active reel 4, and the released smoke is sucked into the user's mouth through the smoke channel 9 and the suction nozzle 10. The smoking device can respond to the user's operation in real time, start and continuously and quantitatively supply and heat the gel-state oil strip at any time, and can also stop supplying and heating at any time, with almost no time delay in response time. After the user takes hundreds of puffs, the current roll of gel-state tobacco oil strip 3 is used up, and the user can open the smoking device shell 1 and replace it with the next roll of gel-state tobacco oil strip.

[0050] It was found during use that even under the extreme condition of strong rolling force when the active reel rotates at the highest speed, the gelled tobacco layer did not fall off from the base belt or the two did not move synchronously.

Claims

1. An electromagnetic induction heating electronic cigarette that continuously supplies gel-state tobacco oil strips, characterized in that: It includes: A smoking device housing (1) is provided with a control circuit board (7), a battery (8), and a smoke passage (9); A placement reel (2) is provided on which a gel-state tobacco oil strip (3) is wound. The gel-state tobacco oil strip (3) is unwound from the placement reel (2), and is rewound by the active reel (4) after being turned by the driven reel (6); The driven reel (6) and / or the active reel (4) are gear-type reels, and accordingly, the gel-state e-liquid strip (3) has a plurality of rows of holes (33) parallel to each other, and the positions of the holes correspond to the gear teeth of the gear-type reel, so that the gear-type reel drives the gel-state e-liquid strip to move; an electromagnetic coil (5), which is located at any position of the gel-state tobacco oil strip from unwinding to winding, and the gel-state tobacco oil strip (3) passes through the inside thereof; The gel-state tobacco oil strip (3) comprises a base strip (31), a magnetic receptor particle layer (34) spread on the base strip (31), and a gel-state tobacco oil layer (32) spread on the magnetic receptor particle layer (34), wherein the magnetic receptor particle layer (34) is a layer of very dense and fine magnetic receptor particles; The gel-state cigarette oil layer (32) is a reversible phase-change gel-state cigarette oil layer or an irreversible phase-change gel-state cigarette oil layer; The gel-state tobacco oil layer (32) is distributed on the base tape (31) in the form of a continuous layer or discrete dots.

2. The electromagnetic induction heating electronic cigarette with continuous supply of gel-state tobacco oil strips according to claim 1, characterized in that: The end of the smoking device shell (1) is also provided with a suction nozzle (10), which is in airflow communication with the smoke channel (9).

3. The electromagnetic induction heating electronic cigarette with continuous supply of gel-state tobacco oil strips according to claim 1, characterized in that: The hole (33) at least penetrates the base band (31), or penetrates the entire gel-state tobacco oil strip.

4. The electromagnetic induction heating electronic cigarette with continuous supply of gel-state tobacco oil strips according to claim 1, characterized in that: The cross section of the electromagnetic coil (5) is a flat rectangle.

5. An electromagnetic induction smoking method for continuously supplying gel-state tobacco oil strips, the method using the electronic cigarette according to any one of claims 1 to 4, the method comprising the following steps: The active reel (4) rotates and drives the driven reel (6) to continuously unwind the gel-state oil strip (3) from the placement reel (2). When the unwound gel-state oil strip (3) passes through the electromagnetic coil (5), the magnetic receptor particle layer (34) therein generates heat under the action of the alternating magnetic field, thereby heating the gel-state oil layer (32) and releasing smoke. The heated gel-state oil strip (3) is rolled onto the active reel (4).

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