Preparation method of colored smoke of electronic cigarette and electronic cigarette
By employing a dual-path independent atomization design and a microcapsule-triggered color development mechanism, the problems of monotonous e-cigarette smoke color and environmental pollution have been solved, achieving stable and uniform generation of colored smoke and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- INHERE DONGGUAN TECH CO LTD
- Filing Date
- 2026-03-17
- Publication Date
- 2026-05-12
AI Technical Summary
Existing e-cigarette vapor has a single color and suffers from problems such as pigment deposition, layering, uneven color development, poor safety, and environmental pollution.
It adopts a dual-path independent atomization design and a microcapsule-triggered color development mechanism. Through food-grade materials and microencapsulated pigments, it achieves physical isolation and precise quantity control of basic smoke and colorant, and uses turbulent mixing to form uniform colored smoke.
It achieves stable and uniform generation of colored smoke, improves visual effects and safety, meets food-grade standards, and reduces the risk of environmental pollution.
Smart Images
Figure CN122004531A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of electronic cigarette technology, specifically to a method for preparing colored smoke from an electronic cigarette and an electronic cigarette. Background Technology
[0002] As a substitute for traditional cigarettes, e-cigarettes have gradually become mainstream in the market due to their features such as no open flame and low tar content. With the upgrading of consumer demands, users are not only concerned about the taste and safety of e-cigarettes, but also have higher requirements for their visual experience. Currently, the vapor from most e-cigarettes is white or pale yellow, with a limited color range, failing to meet the personalized needs of entertainment scenarios.
[0003] Currently, some technologies attempt to achieve colored vapor by directly adding pigments to e-liquids, but this approach has many drawbacks. For example, in existing technologies, pigments are directly dissolved in propylene glycol and glycerin-based e-liquids, which leads to long-term staining of the e-liquid. This not only affects the aesthetic appearance of e-cigarette products but also causes pigment deposition and stratification over time, severely shortening the product's shelf life. Furthermore, pigments are prone to physicochemical reactions with flavorings, nicotine, and other components in e-liquids, altering the original flavor and physicochemical properties of the e-liquid, resulting in a decline in vaping experience and even the production of off-flavors. Furthermore, when ordinary pigment molecules are atomized in the high-temperature environment of the e-cigarette atomizing core, the resulting particles are relatively large in diameter and prone to aggregation. This leads to uneven color rendering, dull colors, poor layering, and a blurry visual effect after exhalation, failing to meet users' demand for vibrant and uniformly colored smoke. Moreover, the color rendering effect is easily affected by ambient humidity and inhalation force, resulting in poor stability. At the same time, most synthetic pigments are prone to thermal decomposition reactions in the high-temperature environment (200℃-300℃) of the e-cigarette atomizing core, producing harmful gases such as formaldehyde and benzene, which violates the core design principle of "harm reduction" in e-cigarettes. In addition, pigments dissolved in e-liquid may come into direct contact with the user's oral mucosa through the mouthpiece, posing potential biosafety risks with long-term use and failing to meet food-grade usage standards. Furthermore, most of the pigments used in existing technologies are non-degradable synthetic materials. After the colored smoke exhaled by users settles, it will adhere to carriers such as walls, clothes, and floors, making it difficult to degrade naturally and causing pigment pollution in the surrounding environment. The dyed e-liquid remaining in discarded e-cigarette cartridges will also cause secondary pollution to soil and water bodies, which is not in line with the development trend of green environmental protection. Summary of the Invention
[0004] The primary objective of this invention is to provide a method for preparing colored smoke from electronic cigarettes. By employing a dual-path independent atomization design and a microcapsule hydrophilic triggering color development mechanism, this method fundamentally solves the problems of e-liquid staining, uneven color development, significant safety hazards, and environmental pollution in existing technologies, thereby achieving the safe, uniform, and stable generation of colored smoke.
[0005] Another objective of this invention is to provide an electronic cigarette that implements the above-described preparation method. Through modular structural design, a detachable shell, and a convenient e-liquid filling structure, it achieves physical isolation between the basic vapor and the colorant, precise quantity control, multiple color switching, and convenient e-liquid replenishment, thus adapting to industrial production and personalized consumer needs and improving the user experience.
[0006] To achieve the above-mentioned objectives, the present invention adopts the following core technical solutions: On one hand, the present invention provides a method for preparing colored smoke from an electronic cigarette, comprising the following steps: Step 1, Basic Smoke Generation: When the coloring atomization module detects the suction airflow, the coloring atomization module is triggered to work, atomizing the food-grade propylene glycol, glycerin, and nicotine stored in the basic atomization unit to form colorless glycerin or propylene glycol smoke droplets, thus obtaining colorless basic smoke. The diameter of the smoke droplets is 3-8μm. Step 2, colorant suspension atomization: When the color atomization module detects the suction airflow, the color atomization module is triggered to work, atomizing the microcapsule pigment suspension stored in the independent colorant unit into extremely fine droplets. The diameter of the extremely fine droplets is 1-3 μm, which is smaller than the diameter of the smoke droplets in Step 1. Step 3, aerosol mixing: The colorless base smoke from Step 1 and the atomized microcapsule pigment suspension from Step 2 are thoroughly mixed in the mixing chamber, causing them to adhere to each other. Step 4, Color Development and Shaping: The moisture formed by the hygroscopic action of glycerol and propylene glycol in the smoke droplets causes the microcapsule pigments to open or adhere to the surface of the smoke droplets, achieving surface coloring of the smoke droplets and forming bright and uniform colored smoke, which presents a visible colored smoke effect after exhalation.
[0007] Furthermore, the microcapsule pigment suspension in step 2 is prepared by dispersing microencapsulated pigment powder in a safe carrier liquid, wherein the safe carrier liquid is one or more of glycerol, propylene glycol, and polyethylene glycol. The preparation process of the microencapsulated pigment powder is as follows: edible, insoluble pigment powder is microencapsulated using edible polysaccharides to form microcapsule pigment powder.
[0008] Furthermore, the edible, insoluble pigment powder includes natural pigment powder and food-grade mineral-derived pigment powder. The natural pigment powder is selected from one or more of spirulina blue protein, curcumin, betaine, and sodium copper chlorophyllin. The food-grade mineral-derived pigment powder is selected from one or more of food-grade titanium dioxide, food-grade iron oxide red, food-grade iron oxide yellow, and food-grade iron oxide black, wherein food-grade titanium dioxide is used to adjust brightness and as a pigment carrier.
[0009] Furthermore, the edible polysaccharide is one or both of gum arabic and modified starch.
[0010] Furthermore, the coloring atomization module mentioned in step 2 is a low-pressure piezoelectric atomizer or a precise electrostatic spray device, and the coloring atomization module is set on the airflow channel after the basic atomization unit.
[0011] Furthermore, in step 4, by precisely controlling the thickness and hydrophilicity of the microcapsule wall material, the microcapsule pigments are precisely opened or adhered to the surface of the smoke droplets, and the pigments are only attached to the surface of the smoke droplets and are insoluble in the e-liquid.
[0012] On the other hand, the present invention also provides an electronic cigarette that implements the above-mentioned preparation method, including a shell, and a cartridge, an airflow channel, a coloring atomization module, and a battery arranged sequentially from front to back within the shell. A circuit board is arranged on one side of the battery. The cartridge also includes a mouthpiece, a mixing chamber, and a basic atomization unit connected sequentially from front to back. An independent colorant unit is arranged on the same side of the circuit board in the basic atomization unit. The basic atomization unit, the independent colorant unit, and the circuit board are electrically connected to the coloring atomization module. The basic atomization unit is used to store food-grade propylene glycol, glycerin, and nicotine. The independent colorant unit is used to store microcapsule pigment suspension. The coloring atomization module is used to atomize food-grade propylene glycol, glycerin, and nicotine to form colorless basic smoke and atomize the microcapsule pigment suspension into extremely fine droplets. The mixing chamber is used to fully mix and adhere the colorless basic smoke with the atomized microcapsule pigment suspension.
[0013] Furthermore, the coloring atomization module is a low-pressure piezoelectric atomizer or a precise electrostatic spraying device, and the coloring atomization module is equipped with an independent switching component, which is used to control the opening or closing of the coloring atomization module and the selection of pigment color.
[0014] Furthermore, in the microencapsulated pigment suspension within the independent colorant unit, the amount of microencapsulated pigment powder used per application is 0.1 mg to 5 mg, and a smoke filter is also provided on the inner wall of the outlet end of the mouthpiece, with an oleophobic coating covering the surface of the smoke filter.
[0015] Furthermore, the outer shell includes an upper shell and a lower shell assembled together. The front side of the upper shell and the lower shell has a smoking hole for the mouthpiece to be exposed. An oil filling hole is also provided on one side of the upper shell and the lower shell. The inner wall of the oil filling hole is plugged with a cap. The oil filling hole is connected to the basic atomizing unit and the independent colorant unit. A vent hole is also provided on one side of the upper shell and the lower shell.
[0016] Compared with the prior art, the present invention has the following significant advantages and benefits: This invention employs a physical isolation design between the independent colorant unit and the basic atomization unit. The pigment exists in the form of microcapsules and does not come into direct contact with the e-liquid, fundamentally avoiding the defects of e-liquid staining, shortened shelf life, and altered taste. At the same time, it facilitates the individual replenishment and replacement of e-liquid, extending the product's lifespan.
[0017] This invention achieves uniform color development of colored smoke by strictly controlling the diameter of the colorant droplets to be smaller than that of the basic smoke droplets, combined with the turbulent mixing design of the mixing chamber. The color vibrancy is improved by more than 50%, and the visual effect after exhalation is clear and long-lasting. Moreover, the color development effect is not significantly affected by the ambient humidity or the suction force, and the stability is strong.
[0018] This invention uses food-grade materials throughout. The microcapsule wall material is edible polysaccharides such as gum arabic and modified starch. The pigments are natural pigments or food-grade mineral pigments. They only adhere to the surface of the smoke and do not enter the e-liquid system. There is no risk of high-temperature decomposition producing harmful substances, nor is there any risk of direct contact between the pigments and the oral mucosa. It meets food-grade usage standards and its safety is significantly better than existing technologies.
[0019] The microcapsule wall material and pigment of this invention are both biodegradable materials. After the colored smoke exhaled by the user settles, it can be rapidly degraded in the natural environment without causing environmental pollution. The residual amount of colorant in the waste e-cigarette cartridges is extremely small and can be separated from the e-liquid, which greatly reduces the risk of secondary pollution and is in line with the development trend of green environmental protection.
[0020] The outer shell of this invention adopts a split upper and lower shell design, which facilitates the maintenance of internal components; the oil filling hole allows for convenient replenishment of e-liquid without disassembling the cartridge; the independent switch component supports multiple color switching, is simple to operate, adapts to different consumption scenarios, and enhances the user experience. Attached Figure Description
[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0022] Figure 1 This is a schematic flowchart of a method for preparing colored smoke from an electronic cigarette according to the present invention. Figure 2 This is a schematic diagram of the overall structure of an electronic cigarette that implements the preparation method of the present invention; Figure 3 This is a partial structural exploded view of an electronic cigarette that implements the preparation method of the present invention; Figure 4 This is a cross-sectional schematic diagram of an electronic cigarette that implements the preparation method of the present invention; Figure 5 This is a schematic diagram illustrating the process by which colorant droplets of the present invention adhere to basic smoke microdroplets.
[0023] Reference numerals: 1. Outer shell; 11. Upper shell; 12. Lower shell; 13. Smoke hole; 14. Oil filling hole; 15. Plug cap; 2. Airflow channel; 3. Coloring atomizing module; 4. Battery; 5. Circuit board; 6. Mouthpiece; 7. Mixing chamber; 8. Basic atomizing unit; 9. Independent coloring agent unit; 10. Vent hole; 101. Basic smoke droplets; 102. Coloring agent droplets; 103. Smoke filter. Detailed Implementation
[0024] Through the description of specific embodiments, the technical means and effects adopted by the present invention to achieve the intended purpose can be understood more deeply and specifically. However, the accompanying drawings are only for reference and illustration and are not intended to limit the technical solutions of the present invention.
[0025] It should be noted that in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.
[0026] Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that an article or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes said element.
[0027] Words like "connect" or "link" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up," "down," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the object being described changes, the relative positional relationship also changes accordingly.
[0028] Example 1: Please refer to Figures 1-5 This embodiment provides a method for preparing colored smoke from electronic cigarettes, including the following steps: Step 1, Basic Smoke Generation: When the coloring atomization module 3 detects the suction airflow, the coloring atomization module 3 is triggered to work, atomizing the food-grade propylene glycol, glycerin, and nicotine stored in the basic atomization unit 8 to form colorless glycerin or propylene glycol smoke droplets, resulting in uniform and stable colorless basic smoke. The diameter of the smoke droplets is 3-8μm. Among them, propylene glycol and glycerin, as food-grade vapor generators that meet the industry standards for e-cigarettes, not only have excellent atomization performance and can quickly form fine vapor, but also have extremely strong hygroscopic properties, which can quickly absorb trace amounts of moisture from the air, providing key hydrophilic triggering conditions for the subsequent color development of microcapsule pigments.
[0029] Step 2, colorant suspension atomization: Synchronized with the basic smoke generation, when the color atomization module 3 detects the suction airflow, the color atomization module 3 is triggered to work, atomizing the microcapsule pigment suspension stored in the independent colorant unit 9 into extremely fine droplets. The diameter of the extremely fine droplets is 1-3μm, which is smaller than the diameter of the smoke droplets in step 1. Please refer to Figure 5 The particle size difference design is the core of achieving uniform color development of smoke: smaller colorant droplets 102 can quickly and evenly adhere to the surface of larger base smoke droplets 101, forming a composite aerosol particle with a "core-shell" structure, which completely avoids the problem of uneven color development and dull color caused by pigment particle agglomeration, and ensures that each smoke droplet can be uniformly colored.
[0030] Step 3, aerosol mixing: The colorless base smoke from Step 1 and the atomized microcapsule pigment suspension from Step 2 are thoroughly mixed in mixing chamber 7, causing them to adhere to each other. Specifically, colorless base smoke and microcapsule pigment droplets converge in a sealed mixing chamber 7. Through the turbulent disturbance of the suction airflow, the two aerosols are fully and uniformly mixed, so that the microcapsule pigment droplets and base smoke droplets 101 adhere tightly to each other, forming a preliminary colored aerosol precursor.
[0031] The mixing chamber 7 ensures sufficient mixing time for the two types of aerosols, guaranteeing uniform coloring and preventing situations where there are areas without color or where the color depth is uneven.
[0032] Step 4, Color Development and Shaping: The moisture formed by the hygroscopic action of glycerol and propylene glycol in the smoke droplets causes the microcapsule pigments to open or adhere to the surface of the smoke droplets, achieving surface coloring of the smoke droplets and forming bright and uniform colored smoke, which presents a visible colored smoke effect after exhalation.
[0033] The composite aerosol precursor flows from the mixing chamber 7 through the mouthpiece 6. After contacting the outside air, the propylene glycol and glycerol in the basic aerosol droplets 101 quickly absorb moisture and form a very thin water molecule film on the surface of the droplets.
[0034] The water molecule membrane acts as a hydrophilic trigger, causing the wall material (edible polysaccharide) of the microcapsule to swell, rupture, or adhere. The pigment powder encapsulated inside the microcapsule is then exposed and fixed on the surface of the smoke droplets, achieving precise surface coloring of the smoke droplets.
[0035] Because the pigment only adheres to the surface of the vapor droplets and does not enter the e-liquid system, it avoids contamination of the e-liquid by the pigment, ensures that the colored vapor is bright and uniform after exhalation, and the visual effect can last for more than 10 seconds. In addition, the pigment is not easy to fall off and settles slowly.
[0036] In this embodiment, the microcapsule pigment suspension in step 2 is made by dispersing microencapsulated pigment powder in a safe carrier liquid. The safe carrier liquid is one or more of glycerol, propylene glycol, and polyethylene glycol. The preparation process of the microencapsulated pigment powder is as follows: edible, insoluble pigment powder is microencapsulated using edible polysaccharides to form microcapsule pigment powder.
[0037] In this embodiment, the edible, insoluble pigment powder includes natural pigment powder and food-grade mineral-derived pigment powder. The natural pigment powder is selected from one or more of spirulina blue protein, curcumin, betaine, and sodium copper chlorophyllin. The food-grade mineral-derived pigment powder is selected from one or more of food-grade titanium dioxide, food-grade iron oxide red, food-grade iron oxide yellow, and food-grade iron oxide black. Among them, food-grade titanium dioxide is used to adjust the brightness and serve as a pigment carrier.
[0038] In this embodiment, the edible polysaccharide is one or both of gum arabic and modified starch.
[0039] In this embodiment, the coloring atomization module 3 in step 2 is a low-pressure piezoelectric atomizer or a precise electrostatic spraying device, and the coloring atomization module 3 is set on the airflow channel 2 after the basic atomization unit 8, so that it is equipped with two independent atomization channels, corresponding to the basic atomization unit 8 and the independent colorant unit 9 respectively, which can realize the synchronous atomization and control of the basic smoke and the colorant suspension.
[0040] In this embodiment, step 4 achieves the opening or adhesion of microcapsule pigments on the surface of smoke droplets by precisely controlling the thickness and hydrophilicity of the microcapsule wall material, and the pigments only adhere to the surface of the smoke droplets and are insoluble in e-liquid.
[0041] Example 2: Please refer to Figures 2-4 This embodiment provides an electronic cigarette for implementing the preparation method of Example 1, which includes a shell 1, and a cartridge, an airflow channel 2, a coloring atomization module 3, and a battery 4 arranged sequentially from front to back within the shell 1. A circuit board 5 is arranged on one side of the battery 4. The cartridge also includes a mouthpiece 6, a mixing chamber 7, and a basic atomization unit 8 connected sequentially from front to back. An independent colorant unit 9 is arranged on the same side of the circuit board 5 in the basic atomization unit 8, which achieves complete physical isolation between the basic e-liquid (propylene glycol, glycerin, and optional nicotine) and the colorant (microcapsule pigment suspension), thereby eliminating the problems of e-liquid staining and pigment reaction with e-liquid from the root. The mouthpiece 6 is made of food-grade silicone, providing a comfortable feel and effectively blocking microparticles in the smoke, thus improving vaping safety.
[0042] The basic atomization unit 8, the independent colorant unit 9, and the circuit board 5 are electrically connected to the coloring atomization module 3, respectively; the basic atomization unit 8 is used to store food-grade propylene glycol, glycerin, and nicotine; The independent colorant unit 9 is used to store the microcapsule pigment suspension; the coloring atomization module 3 is used to atomize food-grade propylene glycol, glycerin and nicotine to form colorless basic smoke and atomize the microcapsule pigment suspension into extremely fine droplets. The mixing chamber 7 is used to fully mix and adhere the colorless base smoke with the atomized microcapsule pigment suspension; the airflow channel 2 and the mixing chamber 7 constitute a color development and stabilization unit, which is used to realize the opening or adhesion of microcapsule pigments on the surface of smoke droplets and stabilize the color. Composed of airflow channel 2 and mixing chamber 7, the airflow channel 2 and mixing chamber 7 achieve full mixing of the two types of aerosols. At the same time, the mixing chamber 7 provides space for the color development of the composite aerosol and can slow down the airflow speed to ensure that the microcapsule pigments are fully opened and adhered on the surface of the smoke droplets, so as to achieve stable formation of colored smoke and avoid color loss and unstable color development during the transmission of smoke.
[0043] In this embodiment, the coloring atomization module 3 is a low-voltage piezoelectric atomizer or a precise electrostatic spraying device, and the coloring atomization module 3 is provided with an independent switch assembly (not shown in the figure). The switch assembly is used to control the opening or closing of the coloring atomization module 3 and the selection of pigment color. The switch assembly is exposed on the surface of the housing 1, which makes it convenient for users to control the opening / closing of the coloring atomization module 3 and the selection of pigment color, adapting to the personalized needs of single color and mixed color.
[0044] In this embodiment, the amount of microencapsulated pigment powder used at one time in the microencapsulated pigment suspension in the independent colorant unit 9 is 0.1mg to 5mg. The inner wall of the outlet end of the mouthpiece 6 is also provided with a smoke filter 103. The surface of the smoke filter 103 is covered with an oleophobic coating. The oleophobic coating can prevent the smoke and pigments drawn out from adhering to the surface of the smoke filter 103. The colored smoke passing through the smoke filter 103 will pass through the mesh of the smoke filter 103 evenly, so that the colored smoke will spread evenly and slowly, making the colored smoke effect better.
[0045] In this embodiment, the outer shell 1 is made of food-grade ABS or aluminum alloy and consists of an upper shell 11 and a lower shell 12 that are assembled together. It can be fixed by buckles or screws, making assembly and disassembly convenient and facilitating the maintenance and replacement of internal components. The upper shell 11 and the lower shell 12 have smoking holes 13 on the front side for the mouthpiece 6 to be exposed. The upper shell 11 and the lower shell 12 also have oil filling holes 14 on one side. The inner wall of the oil filling hole 14 is plugged with a cap 15. The cap 15 is made of silicone material and is used to seal the oil filling hole 14 to prevent oil from overflowing. The oil filling hole 14 is connected to the basic atomizing unit 8 and the independent colorant unit 9. Users can conveniently replenish e-liquid through the oil filling hole 14 without disassembling the entire cartridge, which improves the convenience of use. At the same time, the cap 15 can effectively prevent e-liquid leakage and ensure the product's airtightness.
[0046] It should be noted that the oil filling hole 14 consists of two semi-circular through holes, one of which connects to the basic atomizing unit 8, and the other semi-circular through hole connects to the independent colorant unit 9.
[0047] Ventilation holes 10 are also provided on one side of the upper shell 11 and the lower shell 12. The ventilation holes 10 are located on one side of the coloring atomization module 3 and are used to allow air to enter during suction, while also bringing external moisture into the airflow channel 2 to achieve moisture absorption of glycerol and propylene glycol.
[0048] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.
Claims
1. A method for preparing colored vapor from an electronic cigarette, characterized in that, Includes the following steps: Step 1, Basic Smoke Generation: When the coloring atomization module detects the suction airflow, the coloring atomization module is triggered to work, atomizing the food-grade propylene glycol, glycerin, and nicotine stored in the basic atomization unit to form colorless glycerin or propylene glycol smoke droplets, thus obtaining colorless basic smoke. The diameter of the smoke droplets is 3-8μm. Step 2, colorant suspension atomization: When the color atomization module detects the suction airflow, the color atomization module is triggered to work, atomizing the microcapsule pigment suspension stored in the independent colorant unit into extremely fine droplets. The diameter of the extremely fine droplets is 1-3 μm, which is smaller than the diameter of the smoke droplets in Step 1. Step 3, aerosol mixing: The colorless base smoke from Step 1 and the atomized microcapsule pigment suspension from Step 2 are thoroughly mixed in the mixing chamber, causing them to adhere to each other. Step 4, Color Development and Shaping: The moisture formed by the hygroscopic action of glycerol and propylene glycol in the smoke droplets causes the microcapsule pigments to open or adhere to the surface of the smoke droplets, achieving surface coloring of the smoke droplets and forming bright and uniform colored smoke, which presents a visible colored smoke effect after exhalation.
2. The method for preparing colored smoke from electronic cigarettes according to claim 1, characterized in that, The microcapsule pigment suspension in step 2 is made by dispersing microencapsulated pigment powder in a safe carrier liquid. The safe carrier liquid is one or more of glycerol, propylene glycol, and polyethylene glycol. The preparation process of the microencapsulated pigment powder is as follows: edible, insoluble pigment powder is microencapsulated using edible polysaccharides to form microcapsule pigment powder.
3. The method for preparing colored smoke from electronic cigarettes according to claim 2, characterized in that, The edible, insoluble pigment powder includes natural pigment powder and food-grade mineral-derived pigment powder. The natural pigment powder is selected from one or more of spirulina blue protein, curcumin, betaine, and sodium copper chlorophyll. The food-grade mineral-derived pigment powder is selected from one or more of food-grade titanium dioxide, food-grade iron oxide red, food-grade iron oxide yellow, and food-grade iron oxide black.
4. The method for preparing colored smoke from electronic cigarettes according to claim 2, characterized in that, The edible polysaccharide is one or two of gum arabic and modified starch.
5. The method for preparing colored smoke from electronic cigarettes according to claim 1, characterized in that, The coloring atomization module mentioned in step 2 is a low-pressure piezoelectric atomizer or a precise electrostatic spray device, and the coloring atomization module is set on the airflow channel after the basic atomization unit.
6. The method for preparing colored smoke from an electronic cigarette according to claim 1, characterized in that, In step 4, by precisely controlling the thickness and hydrophilicity of the microcapsule wall material, the microcapsule pigments are opened or adhered to the surface of the smoke droplets, and the pigments only adhere to the surface of the smoke droplets and are insoluble in the e-liquid.
7. An electronic cigarette implementing the preparation method of any one of claims 1-6, characterized in that, The device includes a casing, and, from front to back, a cartridge, an airflow channel, a coloring atomization module, and a battery, all arranged sequentially within the casing. A circuit board is located on one side of the battery. The cartridge also includes a mouthpiece, a mixing chamber, and a basic atomization unit, all connected sequentially from front to back. An independent coloring agent unit is located on the same side of the circuit board as the basic atomization unit. The basic atomization unit, the independent coloring agent unit, and the circuit board are electrically connected to the coloring atomization module. The basic atomization unit stores food-grade propylene glycol, glycerin, and nicotine. The independent coloring agent unit stores a microcapsule pigment suspension. The coloring atomization module atomizes the food-grade propylene glycol, glycerin, and nicotine to form colorless basic smoke and atomizes the microcapsule pigment suspension into extremely fine droplets. The mixing chamber is used to fully mix and adhere the colorless base smoke with the atomized microcapsule pigment suspension.
8. The electronic cigarette according to claim 7, characterized in that, The coloring atomization module is a low-pressure piezoelectric atomizer or a precise electrostatic spraying device, and the coloring atomization module is equipped with an independent switching component, which is used to control the opening or closing of the coloring atomization module and the selection of pigment color.
9. The electronic cigarette according to claim 7, characterized in that, In the microencapsulated pigment suspension within the independent colorant unit, the amount of microencapsulated pigment powder used per application is 0.1 mg to 5 mg. The inner wall of the outlet end of the mouthpiece is also provided with a smoke filter, and the surface of the smoke filter is covered with an oleophobic coating.
10. The electronic cigarette according to claim 7, characterized in that, The outer shell includes an upper shell and a lower shell that are assembled together. The front side of the upper shell and the lower shell has a smoking hole for the mouthpiece to be exposed. The upper shell and the lower shell also have an oil filling hole on one side. The inner wall of the oil filling hole is plugged with a cap. The oil filling hole is connected to the basic atomizing unit and the independent colorant unit. The upper shell and the lower shell also have a vent hole on one side.