Heating cigarette smoking set, heating cigarette, heating cigarette system and method for improving release efficiency of granular aerosol product

Abstract

The invention belongs to the field of heating non-combustion tobacco products, and particularly relates to a heating cigarette smoking set, a heating cigarette, a heating cigarette system and a method for improving the release efficiency of particle type aerosol products. The heating cigarette smoking set comprises a cigarette containing cavity and a magnetic attraction element. Wherein the magnetic attraction element is located in the cigarette containing cavity, or the periphery of the cigarette containing cavity is surrounded by the magnetic attraction element; the magnetic attraction element is a permanent magnet or a coil which generates a magnetic field when powered on. Due to the attraction characteristic of the magnetic attraction element, a gear piece in a traditional particle type heating cigarette does not need to be arranged in the cigarette, the technological process of cigarette manufacturing is simplified, aerosol interception caused by the existence of the gear piece is reduced, and the release efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the field of heat-not-burn tobacco products, and in particular relates to a heated cigarette smoking device, a heated cigarette, a heated cigarette system and a method for improving the release efficiency of a particle-type aerosol product. Background Art

[0002] Heat-not-burn cigarettes are an emerging development direction in the tobacco industry in recent years. They generate and release smoke aerosols by heating smoke-releasing materials at low temperatures. The filling state of smoke-releasing materials in cigarettes can have a significant impact on the generation and transfer of aerosols. Particle-shaped smoke-releasing materials are a type of smoke-releasing material commonly used in heated cigarettes. They have the advantages of clean smoke and simple production process. However, the point contact characteristics between smoke-releasing particles determine that their filling state in cigarettes is relatively loose, which is not conducive to the transfer of heat and the generation of aerosols during the heating process.

[0003] In addition, the loose filling state and good fluidity of the particles determine that they will be violently disturbed by the airflow during the suction process. Therefore, the existing granular heated cigarettes all use multi-through-hole firmware segments to block the particles to prevent the particles from flowing out of the heating area during the suction process. The Chinese patent application (application number CN202210306722.4) gives a detailed introduction to the multi-through-hole firmware segments (commonly known as "gear parts"). However, the "gear part" structure is arranged in the key position of aerosol formation and evolution-the hollow section, which intercepts a large amount of aerosol while blocking the flow of particles, seriously affecting the smoking effect, and thus affecting the sensory experience. In addition, the "gear part" also brings many inconveniences to the industrialized manufacturing of granular heated cigarettes, increases production costs, and reduces production efficiency.

[0004] Therefore, in order to change the loose filling state between particles, solve the pain point of "gear parts", and ultimately improve the release efficiency of particulate aerosol products, this method is proposed. Summary of the invention

[0005] A first aspect of the present invention provides a heated cigarette smoking device, the heated cigarette smoking device comprising: a cigarette accommodating cavity, a magnetic attraction element;

[0006] Wherein, the magnetic attraction element is located in the cigarette receiving cavity, or the magnetic attraction element is surrounded by the outer periphery of the cigarette receiving cavity;

[0007] The magnetic attraction element is a permanent magnet or a coil that generates a magnetic field when powered on.

[0008] Preferably, when the magnetic element is located in the cigarette receiving chamber:

[0009] The cigarette accommodating cavity is provided with a long strip structure arranged along the axial direction of the cigarette accommodating cavity;

[0010] The long strip structure is a magnetic element; or the long strip structure includes a magnetic element, and the magnetic element is located on the surface or inside of the long strip structure.

[0011] The magnetic material may be a permanent magnetic material layer embedded / coated in the center of the long strip structure or arranged along the axial direction. Alternatively, the interior of the long strip structure is a hollow structure, and the magnetic material is an energized spiral coil located in the hollow structure.

[0012] Preferably, the elongated structure or tubular element is made of a magnetic field transparent material, such as ceramic.

[0013] Preferably, the heated cigarette smoking article comprises: a tubular element;

[0014] The cigarette accommodating cavity is the inner hollow part of the tubular element;

[0015] The tubular element is a magnetic element; or the tubular element includes a magnetic element, and the magnetic element is located on the surface or inside of the tubular element.

[0016] Of course, when the magnetic attraction element is located on the inner surface of the long strip structure or the tubular element, the long strip structure or the tubular element may also be made of a material that is not permeable to the magnetic field, such as iron.

[0017] The magnetic attraction material may be a permanent magnetic material layer embedded / coated on the inner wall of the tubular element and arranged along the axial direction, or the magnetic attraction material may be an energized spiral coil surrounding the inner wall or outer wall of the tubular element.

[0018] Preferably, the long strip structure has a heating function;

[0019] Alternatively, the long strip structure does not have a heating function, and the heated cigarette smoking device has a heating element.

[0020] When the long strip structure has a heating function, a central heating needle / heating sheet can be selected.

[0021] Preferably, the tubular element has a heating function;

[0022] Alternatively, the tubular element does not have a heating function, and the heated cigarette smoking article has a heating element.

[0023] When the tubular element has a heating function, a circumferential heating ring may be selected.

[0024] When the strip-shaped structure or tubular element does not have a heating function, the heated cigarette smoking device has a separate heating element, which may be a resistance heating element, such as a circumferential heating element located around the cigarette receiving cavity, an end heating element located at the end of the cigarette receiving cavity, or an air heating element located in the airflow channel of the heated cigarette smoking device.

[0025] A second aspect of the present application provides a heated cigarette system, the heated cigarette system comprising: the heated cigarette smoking article and the heated cigarette according to any one of the first aspects;

[0026] The heated cigarette comprises a smoking section, wherein the smoking section contains magnetic smoking particles;

[0027] The smoking section is located in the cigarette accommodating chamber of the heated cigarette, and a plurality of the magnetic smoking particles are attracted by the magnetic attraction element to the periphery of the magnetic attraction element and are kept as a whole.

[0028] Preferably, the magnetic smoke-generating particles include a smoke-generating substance and a magnetic substance.

[0029] Preferably, the distal lip end of the smoking segment has a blocking piece to block the magnetic smoking particles. The proximal lip end of the smoking segment has no particle blocking element, such as a gear part or the like.

[0030] Preferably, the blocking piece is a pierceable blocking piece, and the elongated structure has a pointed end.

[0031] The magnetic tobacco particles refer to tobacco particles mixed with magnetically attracted components, such as iron, nickel, cobalt or their alloys. These magnetic substances are mixed with smoking substances in the form of micropowders or nanoparticles, or embedded in smoking substances through a special composite process. This design ensures that the particles can respond to magnetic force under the action of a magnetic field, thereby achieving a close fit with the magnetic attraction element.

[0032] Preferably, when the magnetic attraction element is a coil that generates a magnetic field when energized, the coil is connected to a DC power supply instead of an AC power supply to avoid generating eddy currents in the magnetic tobacco particles and thus preventing the magnetic tobacco particles from being attracted.

[0033] Preferably, when the magnetic attraction element is a coil that generates a magnetic field when energized, the coil is insulated from the long strip structure or tubular element.

[0034] Preferably, the magnetically attractable components are evenly distributed inside a single magnetic tobacco particle and are tightly wrapped by the smoking substance.

[0035] A third aspect of the present application provides a heated cigarette, the heated cigarette comprising a smoking segment, wherein the smoking segment contains magnetic smoking particles;

[0036] The distal lip end of the smoking segment is provided with a blocking piece to block the magnetic smoking particles, and the proximal lip end of the smoking segment is not provided with a particle blocking element.

[0037] The fourth aspect of the present application provides a method for improving the release efficiency of a particulate aerosol product, wherein the method adopts the heated cigarette system described in the first aspect.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. Simplified cigarette structure: Due to the attraction characteristics of the magnetic element, there is no need to set up the "gear parts" in traditional granular heated cigarettes in the cigarette, which simplifies the cigarette manufacturing process, reduces the aerosol retention caused by the existence of "gear parts", and improves the release efficiency.

[0040] 2. Uniform heating: In the preferred technical solution, the long strip structure or tubular element where the magnetic element is located has a heating function and also acts as a heating element. During the smoking process of the heated cigarette, although the flow of airflow in the cigarette may cause certain disturbances to the magnetic tobacco particles, due to the effect of magnetic attraction, the magnetic tobacco particles can remain tightly attached to the surface of the heating element, ensuring that the particles will not be displaced or detached due to the airflow during the entire smoking process, effectively avoiding local overheating or cold spots, achieving a more uniform heating effect, and maintaining heating stability.

[0041] 3. Optimized user experience: Through more stable heating and uniform smoke release, users can get a more consistent and comfortable smoking experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 Schematic diagram of the structure of magnetic tobacco particles.

[0043] Figure 2 A is a schematic structural diagram of a spiral coil 2 disposed in the hollow portion of the heating needle 1 .

[0044] Figure 2 B is with Figure 2 A schematic diagram of the heating smoking device structure of the heating needle 1.

[0045] Figure 3 The diagram is a cross-sectional schematic diagram (3A) and an overall structural schematic diagram (3B) of a heating smoking device with a circumferential heating element 3. A coil 4 is arranged on the circumferential heating element 3.

[0046] Figure 4 It is a cross-sectional structural schematic diagram (4A) and an overall structural schematic diagram (4B) of a heating cigarette system with a heating needle.

[0047] Figure 5It is a cross-sectional structural schematic diagram (4A) and an overall structural schematic diagram (4B) of a heating cigarette system with a circumferential heating element.

[0048] List of reference numerals:

[0049] 1. Heating needle, 2. Spiral coil, 3. Circumferential heating element, 4. Coil, 5. Magnetic material; 6. Tobacco matrix. DETAILED DESCRIPTION

[0050] The present invention is further described in detail below in conjunction with embodiments.

[0051] Those skilled in the art will appreciate that the following examples are only used to illustrate the present invention and should not be considered to limit the scope of the present invention. If no specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the art or the product specifications are used. If the manufacturer of the materials or equipment used is not specified, they are all conventional products that can be purchased.

[0052] Those skilled in the art will appreciate that, unless expressly stated otherwise, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" to another element, it may be directly connected to the other element, or there may be intermediate elements. In addition, the "connection" used herein may include wireless connections.

[0053] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two. The terms "inside", "upper", "lower", etc., indicating positions or state relationships, are based on the positions or state relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operate in a specific position, and therefore cannot be understood as limiting the present invention.

[0054] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0055] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0056] The present application provides a device for heating tobacco particles without burning them using magnetic effects. The device is combined with a permanent magnetic or electromagnetic heating element to ensure that the tobacco particles are tightly attached to the magnetic attraction element during the heating process, thereby achieving uniform heating and improving the aerosol release efficiency.

[0057] When the long strip structure or tubular element has a heating function, the principle of the present application is as follows:

[0058] The heated cigarette smoking device achieves permanent magnetism through the following scheme:

[0059] The core design of the permanent magnetic heating device is to combine permanent magnetic materials (such as NdFeB, ferrite, etc.) with heating elements to form a heating element with magnetic force. The permanent magnetic material can be embedded in the structure of the heating element or used as a coating material on the surface of the heating element.

[0060] The advantage of permanent magnetic heating devices is that they do not require additional power supply to generate a magnetic field. This design is relatively simple and is suitable for portable heating devices that require low energy consumption or lightweight structures. The selection of permanent magnetic materials also needs to consider their thermal stability to ensure that they can maintain their magnetism in a high-temperature heating environment and avoid demagnetization.

[0061] The heated cigarette smoking device realizes electromagnetic properties through the following scheme:

[0062] Electromagnetism is to generate an electromagnetic field through a powered coil, and use the principle of electromagnetic induction to attract tobacco particles containing magnetic components. In this scheme, a coil is arranged outside or inside the heating element. When the device is powered on, current flows through the coil, generating a magnetic field. This magnetic field attracts the magnetic particles in the cigarette, making it stick to the surface of the heating element.

[0063] For example, a central heating needle can be designed as a hollow structure with a built-in energized coil. When the coil is energized, a magnetic field is formed outside the heating needle, attracting tobacco particles to adhere to the needle body. For a circumferential heating ring, a spiral coil can be arranged inside the outer shell of the heating ring. When energized, a uniform annular magnetic field is generated to ensure that tobacco particles are distributed on the entire inner surface of the heating ring.

[0064] The electromagnetic heating device has the characteristics of strong controllability. By adjusting the current or the number of coil turns, the magnetic field strength can be flexibly controlled to adapt to different types of tobacco particles or different heating requirements. At the same time, this design is also suitable for achieving magnetic field attraction in a larger range and is applicable to a variety of heating element shapes.

[0065] The material selection of the magnetic heating device follows the following principles:

[0066] Permanent magnet material selection: Permanent magnet materials need to have high magnetism and good heat resistance. Commonly used permanent magnet materials include neodymium iron boron, ferrite and aluminum nickel cobalt alloy. These materials have high magnetic strength and can generate sufficient magnetic force at a small size to attract tobacco particles.

[0067] Neodymium iron boron: It has a high magnetic energy product and can generate a strong magnetic field in a small volume, making it very suitable for small heating components in portable devices.

[0068] Ferrite: Although it has weak magnetic force, it has good thermal stability and is suitable for heating scenarios with higher temperatures.

[0069] AlNiCo: Excellent high temperature resistance, suitable for heating devices that work at high temperatures for a long time.

[0070] Solenoid coil material selection: Solenoid coils are usually made of copper or aluminum wire, which have good electrical conductivity and can maintain stable current conduction during the heating process.

[0071] Copper wire: Due to its excellent conductivity and low resistance, copper wire can effectively generate magnetic fields and is suitable for heating element designs that require strong magnetic fields.

[0072] Aluminum wire: Although its conductivity is slightly lower than copper, it is lighter and suitable for situations where weight needs to be reduced in portable devices.

[0073] The process design of the magnetic heating device follows the following principles:

[0074] The heating element needs to be made of high temperature resistant materials, such as stainless steel or ceramic materials. These materials can not only withstand high temperatures, but also have good thermal conductivity to ensure that the tobacco particles are heated evenly. The design of the heating element should also be coordinated with the magnetic element to ensure stability when the cigarette is inserted and to ensure full contact between the tobacco particles and the heating element.

[0075] In addition, stainless steel materials that have been specially treated should be used to minimize their shielding effect on the magnetic field: the treatment includes but is not limited to: 1. Adjusting the content of its alloy elements, such as adding elements such as manganese, cadmium, indium, etc. to change its magnetic field performance, thereby reducing the shielding effect on the magnetic field; 2. Appropriate heat treatment to change its microstructure to reduce shielding; 3. Demagnetization treatment.

[0076] When the particle-type heated cigarette is inserted into the heated tobacco device, the magnetic tobacco particles are immediately attracted by the magnetic force and automatically and tightly adhere to the surface of the heating element. This fitting design ensures that each particle can receive uniform and sufficient heat transfer, avoiding local overheating or insufficient heating in traditional heating methods.

[0077] Figure 1 It is a schematic diagram of the structure of magnetic tobacco particles, which include magnetic material 5 and tobacco matrix 6.

[0078] Figure 2 A is a schematic structural diagram of a spiral coil 2 disposed in the hollow portion of the heating needle 1 .

[0079] Figure 2 B is with Figure 2 A schematic diagram of the heating smoking device structure of the heating needle 1.

[0080] Figure 3 The diagram is a cross-sectional schematic diagram (3A) and an overall structural schematic diagram (3B) of a heating smoking device with a circumferential heating element 3. A coil 4 is arranged on the circumferential heating element 3.

[0081] Figure 4 It is a cross-sectional structural schematic diagram (4A) and an overall structural schematic diagram (4B) of a heating cigarette system with a heating needle.

[0082] Figure 5 It is a cross-sectional structural schematic diagram (4A) and an overall structural schematic diagram (4B) of a heating cigarette system with a circumferential heating element.

[0083] Example 1

[0084] 1. Preparation of tobacco particles

[0085] First, prepare tobacco particles containing magnetic components. The specific method is to evenly add a trace amount of magnetic materials, such as iron powder, nickel powder or cobalt powder, into tobacco products. These magnetic particles are evenly distributed in the tobacco matrix through nanoparticle technology, and the magnetic component of each tobacco particle accounts for 0.1% to 2% to ensure that the particles have sufficient responsiveness in the magnetic field without affecting the taste or burning characteristics of the tobacco. The diameter of tobacco particles usually ranges from 0.5 mm to 2 mm, which ensures that the particles are evenly distributed inside the cigarette and can be effectively attracted by the magnetic field.

[0086] 2. Design of heating device in heated smoking device

[0087] This embodiment adopts a permanent magnetic central heating needle design. The heating needle is made of a high thermal conductivity material (such as nickel-chromium alloy), and the outer surface is coated with a thin layer of permanent magnetic material (such as neodymium iron boron). The heating needle is about 50 mm long and about 2 mm in diameter, and can be inserted into the center of the granular heated cigarette.

[0088] The core design of the heating needle is to have a permanent magnetic material layer on its surface, which can adsorb tobacco particles to the outer wall of the heating needle through magnetic attraction. The magnetic energy product of the permanent magnetic material is about 45MGOe (magnetic energy product unit) of neodymium iron boron, which can generate enough magnetic force to attract tobacco particles, but will not be too strong to make it difficult for the particles to move.

[0089] 3. Heating and suction process

[0090] When the user inserts a granular cigarette filled with magnetic tobacco particles into the heating device, the heating needle is inserted into the inside of the cigarette through the center of the cigarette. Since the heating needle is embedded with permanent magnetic material on the outside, the magnetic tobacco particles in the cigarette are quickly attracted and adhere to the outer wall of the heating needle under the action of magnetic force. The magnetic effect ensures that the particles can be closely arranged on the surface of the heating element without the need for an additional clamping device, thereby achieving uniform distribution of the particles.

[0091] After starting the heating device, the heating needle begins to heat up rapidly, and the heat is transferred to the attached tobacco particles through the surface of the heating needle. Since the particles are tightly attached to the surface of the heating needle, the heat can be evenly transferred to each particle, ensuring effective heating inside the particles. During the heating process, the smoke components in the particles are fully released, producing a consistent and uniform smoke effect. At the same time, since the "gear parts" in the cigarette are eliminated, the interception effect of the "gear parts" on the aerosol is significantly reduced, and the aerosol release efficiency is increased.

Claims

1. A heated cigarette smoking device, characterized in that: The heated cigarette smoking device comprises: a cigarette accommodating chamber and a magnetic attraction element; Wherein, the magnetic attraction element is located in the cigarette receiving cavity, or the magnetic attraction element is surrounded by the outer periphery of the cigarette receiving cavity; The magnetic attraction element is a permanent magnet or a coil that generates a magnetic field when powered on.

2. The heated cigarette smoking device according to claim 1, characterized in that: When the magnetic element is located in the cigarette receiving chamber: The cigarette accommodating cavity is provided with a long strip structure arranged along the axial direction of the cigarette accommodating cavity; The long strip structure is the magnetic element; or the long strip structure includes the magnetic element, and the magnetic element is located on the surface or inside of the long strip structure.

3. The heated cigarette smoking device according to claim 1, characterized in that: The heated cigarette smoking device comprises: a tubular element; The cigarette accommodating cavity is the inner hollow part of the tubular element; The tubular element is a magnetic element; or the tubular element includes a magnetic element, and the magnetic element is located on the surface or inside of the tubular element.

4. The heated cigarette smoking device according to claim 2, characterized in that: The long strip structure has a heating function; Alternatively, the long strip structure does not have a heating function, and the heated cigarette smoking device has a heating element.

5. The heated cigarette smoking device according to claim 3, characterized in that: The tubular element has a heating function; Alternatively, the tubular element does not have a heating function, and the heated cigarette smoking article has a heating element.

6. A heated cigarette, characterized in that: The heated cigarette comprises a smoking section, wherein the smoking section contains magnetic smoking particles; The distal lip end of the smoking segment is provided with a blocking piece to block the magnetic smoking particles, and the proximal lip end of the smoking segment is not provided with a particle blocking element.

7. A heating cigarette system, characterized in that: The heated cigarette system comprises: the heated cigarette smoking device and the heated cigarette according to any one of claims 1 to 5; The heated cigarette comprises a smoking section, wherein the smoking section contains magnetic smoking particles; The smoking section is located in the cigarette accommodating chamber of the heated cigarette, and a plurality of the magnetic smoking particles are attracted by the magnetic attraction element to the periphery of the magnetic attraction element and are kept as a whole.

8. The heated cigarette system according to claim 6, characterized in that: The distal lip end of the smoking segment is provided with a blocking piece to block the magnetic smoking particles, and the proximal lip end of the smoking segment is not provided with a particle blocking element.

9. The heated cigarette system according to claim 8, characterized in that: The blocking piece is a puncturable blocking piece, and the long strip structure has a pointed end.

10. A method for improving the release efficiency of a particle aerosol product, characterized in that: The method adopts the heating cigarette system according to claim 6.

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