Granular heating cigarette product capable of being inductively heated, and preparation method therefor

Abstract

A granular heating cigarette product capable of being inductively heated, comprising a hollow cigarette outer pipe (1), wherein the two ends of an internal channel of the cigarette outer pipe (1) are respectively provided with an induction heating unit (2) and a filtering unit (3); the middle section of the internal channel of the cigarette outer pipe (1) is provided with a vapor release particle unit (4) and a blocking and cooling unit (5); the two ends of the vapor release particle unit (4) are respectively blocked by the induction heating unit (2) and the blocking and cooling unit (5); the induction heating unit (2) comprises an inductor base body (7) and an induction heater (8) that are connected to each other; the induction heater (8) is embedded into the vapor release particle unit (4).

Description

Induction-heated granular heated cigarette product and preparation method thereof Technical Field

[0001] The present invention relates to the technical field of tobacco-heated cigarette products, and in particular to a particle-type heated cigarette product capable of induction heating and a preparation method thereof. Background Art

[0002] The primary advantage of heated tobacco products is their ability to effectively reduce known harmful smoke components produced by the combustion and pyrolysis of traditional cigarettes. Electric heated tobacco products are a rapidly developing new tobacco product category, categorized by heating technology, including resistance, electromagnetic, infrared, and microwave. Electromagnetic heated tobacco products, due to their high energy conversion efficiency, rapid heating, and contactless energy transmission, have become a hot research area for tobacco companies. Currently, most electromagnetic heated tobacco products under research and development incorporate heating elements within the heated smoking device. To smoke these electromagnetic heated tobacco products, the heating element must be inserted into the heated cigarette's smoke-releasing medium and then separated after puffing. This poses challenges such as the heating element adhering to the smoke-releasing medium, requiring cleaning, and can easily lead to excessive heating of the heated smoking device's housing.

[0003] Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a granular heated cigarette product that can be induction heated and a preparation method thereof, so as to achieve the goals of sufficient smoke release, uniform smoke from puff to puff, no falling tobacco particles, direct pulling out of the cigarette, and simple manufacturing process.

[0005] The present invention is achieved through the following technical solutions:

[0006] A particle-type heated cigarette product capable of induction heating comprises a hollow cigarette outer tube, wherein an induction heating unit and a filtering unit are respectively provided at both ends of an internal channel of the cigarette outer tube, a smoke-releasing particle unit and a barrier cooling unit are respectively provided in the middle section of the internal channel of the cigarette outer tube, and both ends of the smoke-releasing particle unit are respectively blocked by the induction heating unit and the barrier cooling unit, and the induction heating unit comprises an interconnected inductor base and an induction heater, and the induction heater is embedded in the smoke-releasing particle unit.

[0007] As a preferred solution for the above-mentioned heated cigarette product, a plurality of smoke channels are opened on the sensor base, the periphery of the sensor base coincides with the inner wall of the outer tube of the cigarette, and one end of the smoke-releasing particle unit is blocked by the sensor base.

[0008] As a preferred solution for the above-mentioned heated tobacco product, the induction heater is made of electromagnetic induction heating material.

[0009] As a preferred solution of the above-mentioned heated cigarette product, a gap is left between the barrier cooling unit and the filter unit, and a functional unit is arranged in the gap.

[0010] As a preferred embodiment of the above-mentioned heated cigarette product, the functional unit is made by mixing at least one of popping beads, slow-release phase change material, fragrance thread, fragrance sachet, cooling particles and filter material.

[0011] As a preferred embodiment of the above-mentioned heated cigarette product, a plurality of air ducts are arranged inside the barrier and cooling unit, and the pore size of the air ducts is smaller than the particle size of the smoke-releasing particles in the smoke-releasing particle unit. The barrier and cooling unit is made of one or a mixture of at least two of ceramics, glass, high-polymer environmentally friendly plastics, activated carbon, starch-based materials, tobacco materials, and herbal plant materials.

[0012] As a preferred embodiment of the above-mentioned heated cigarette product, the outer tube of the cigarette is made of any one of pulp fibers, non-tobacco plant fibers, wood pulp fibers, bamboo pulp fibers, and tobacco materials, or a mixture of at least two of them.

[0013] As a preferred embodiment of the above-mentioned heated cigarette product, the filter unit is made of filter material alone or a mixture of at least one of popping beads, slow-release phase change material, fragrance thread, fragrance sachet, cooling particles and filter material.

[0014] As a preferred embodiment of the above-mentioned heated cigarette product, the length of the sensor substrate is 2-6 mm, the length of the induction heater is 6-12 mm, the length of the smoke-releasing particle unit is 8-20 mm, the length of the barrier cooling unit is 5-18 mm, and the length of the filter unit is 4-12 mm.

[0015] The present invention also discloses a method for preparing the above-mentioned induction-heatable granular heated cigarette product, comprising the following steps:

[0016] Step 1: Prepare the outer tube of the cigarette:

[0017] The outer tube of the cigarette is made of any one of pulp fiber, non-tobacco plant fiber, wood pulp fiber, bamboo pulp fiber, and tobacco material, or a mixture of at least two of them;

[0018] Step 2: Prepare the induction heating unit:

[0019] The sensor substrate is prepared by using any one of ceramics, clay, glass, non-inductively heated metals and alloys, heat-resistant plastic materials, pulp fibers, tobacco materials, and non-tobacco plant materials, and the induction heater is prepared by using electromagnetic induction heating materials. The induction heater is then fixed on the sensor substrate to form an induction heating unit.

[0020] Step 3: Prepare smoke-releasing particle units:

[0021] Pure tobacco particles or mixed particles of tobacco and plant flavorings are formed into quantitative smoke-releasing particle units in a fixed volume or fixed mass manner;

[0022] Step 4: Prepare the barrier cooling unit:

[0023] The barrier cooling unit is prepared by mixing one or at least two of ceramics, glass, high polymer environmentally friendly plastic, activated carbon, starch-based materials, tobacco materials, and herbal plant materials;

[0024] Step 5: Prepare the filter unit:

[0025] The filter unit having a porous structure is formed by mixing at least one of cellulose, raw materials of smoke-releasing particles, and plant materials, or at least two of them;

[0026] Step 6: Cigarette forming:

[0027] The outer tube of the cigarette, the barrier cooling unit, and the filter unit are cut into specified lengths, and then the induction heating unit, the smoke-releasing particle unit, the barrier cooling unit, and the filter unit are installed into the outer tube of the cigarette. The two ends of the smoke-releasing particle unit are sealed by the induction heating unit and the barrier cooling unit, and the induction heater is embedded in the smoke-releasing particle unit to obtain a cigarette product.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] 1. The present invention provides an induction-heated, particle-type heated tobacco product. By integrating an induction heating unit into the heated tobacco product and using it in conjunction with a matching electromagnetic heating device, most of the heat generated by the induction heating unit during the puffing process is used to heat the smoke-releasing particle unit. This results in high heat utilization, effectively improving the heating efficiency of the heated tobacco product, allowing the heated tobacco product to produce sufficient and uniform smoke, with minimal heat diffusion outward. This significantly reduces the shell temperature of the electromagnetic heating device and the thermally induced impurities in the smoke. After the puffing is completed, the heated tobacco product can be directly removed from the electromagnetic heating device without the need for an auxiliary extraction device or cleaning the device, and the appearance of the cigarette remains unchanged. Furthermore, the induction heating unit within the heated tobacco product serves as both a heating component for heating the smoke-releasing particle unit and a sealing component for sealing one end of the smoke-releasing particle unit. This prevents tobacco particles from falling during the puffing process. Furthermore, the induction heating unit is located at the distal end of the filter unit, further away from the filter unit, further reducing the filter unit temperature and preventing burns during the puffing process.

[0030] 2. The present invention provides a method for preparing a particle-type heated cigarette product capable of induction heating, which has a simple preparation process, high production efficiency and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG1 is a schematic structural diagram of the present invention.

[0032] FIG2 is a perspective view of the induction heating unit of the present invention.

[0033] FIG3 is a graph showing the change in smoke release over puffing time for the samples of the present invention and the control example.

[0034] FIG4 is a graph showing the change in smoke temperature over puffing time for the samples of the present invention and the control example.

[0035] Numbers in the figure: 1 smoke support outer tube, 2 induction heating unit, 3 filtering unit, 4 smoke particle release unit, 5 barrier cooling unit, 6 air duct, 7 sensor base, 8 induction heater, 9 smoke channel, 10 gap. DETAILED DESCRIPTION

[0036] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process. However, the protection scope of the present invention is not limited to the following embodiment.

[0037] Referring to Figures 1 to 4, this embodiment discloses an inductively heated granular heated cigarette product, comprising a hollow outer tube 1 made of any one of pulp fibers, non-tobacco plant fibers, wood pulp fibers, bamboo pulp fibers, and tobacco materials, or a mixture of at least two thereof. An induction heating unit 2 and a filter unit 3 are provided at each end of the internal channel of the outer tube 1. A smoke-releasing particle unit 4 and a barrier cooling unit 5 are provided in the middle section of the internal channel of the outer tube 1. The smoke-releasing particle unit 4 is blocked at both ends by the induction heating unit 2 and the barrier cooling unit 5, respectively. The barrier cooling unit 5 is internally provided with multiple airways 6, the aperture of which is smaller than the particle size of the smoke-releasing particles in the smoke-releasing particle unit 4. The induction heating unit 2 comprises an interconnected inductor base 7 and an induction heater 8, which is embedded within the smoke-releasing particle unit 4.

[0038] The sensor base 7 is formed with multiple smoke channels 9. The outer periphery of the sensor base 7 conforms to the inner wall of the cigarette holder outer tube 1, thereby sealing one end of the smoke-releasing particle unit 4. The induction heater 8 is made of electromagnetic induction heating material. The shape of the induction heater 8 is not limited and can be designed to suit different needs. The induction heater 8 extends along the longitudinal axis of the smoke-releasing particle unit 4.

[0039] A gap 10 is left between the barrier cooling unit 5 and the filter unit 3. A functional unit can be optionally provided in the gap 10. The functional unit can be made of at least one of explosive beads, slow-release phase change material, fragrance thread, fragrance sachet, cooling particles mixed with filter material, and has cooling and fragrance-enhancing functions.

[0040] The barrier cooling unit 5 is made of one or a mixture of at least two of ceramics, glass, high polymer environmentally friendly plastic, activated carbon, starch-based materials, tobacco materials, and herbal plant materials.

[0041] The filter unit 3 is made of filter material alone or is made of a mixture of at least one of explosive beads, slow-release phase change materials, fragrance threads, fragrance sachets, and cooling particles with filter material.

[0042] The sensor base 7 is 2-6 mm long, the induction heater 8 is 6-12 mm long, the smoke-releasing particle unit 4 is 8-20 mm long, the barrier and cooling unit 5 is 5-18 mm long, the functional unit is 4-12 mm long, and the filter unit 3 is 4-12 mm long. The outer walls of the sensor base 7, smoke-releasing particle unit 4, barrier and cooling unit 5, functional unit, and filter unit 3 are tightly fitted to the inner wall of the channel inside the cigarette outer tube 1.

[0043] This embodiment also provides a method for preparing the above-mentioned induction-heatable granular heated cigarette product, comprising the following steps:

[0044] Step 1: Prepare the outer tube of the cigarette:

[0045] The cigarette outer tube 1 with a hollow structure is made of any one of pulp fiber, non-tobacco plant fiber, wood pulp fiber, bamboo pulp fiber and tobacco material or a mixture of at least two of them.

[0046] Step 2: Prepare the induction heating unit 2:

[0047] The sensor base 7 is prepared by using any one of ceramics, clay, glass, non-inductively heated metals and alloys, heat-resistant plastic materials, pulp fibers, tobacco materials and non-tobacco plant materials, and the induction heater 8 is prepared by using electromagnetic induction heating materials. Then, the induction heater 8 is fixed on the sensor base 7 to form an induction heating unit 2.

[0048] Among them, materials such as ceramics, clay, glass, and non-inductively heated metals and alloys can be molded into the sensor substrate 7 using a casting process. Materials such as heat-resistant plastics can be injection molded into the sensor substrate 7. Materials such as pulp fibers, tobacco materials, and non-tobacco plant materials can be screw extruded into the sensor substrate 7. Electromagnetic induction heating materials include ferrite, martensite, stainless steel, neodymium iron boron, and their alloys. Induction heater 8 can be made using any one or at least two of these materials through metal molding or CNC machine tools. The induction heater 8 can be fixedly connected to the sensor substrate 7 using high-temperature adhesive bonding or threaded connections.

[0049] Step 3: Prepare smoke-releasing particle unit 4:

[0050] Pure tobacco particles or mixed particles of tobacco and plant flavorings are formed into a fixed volume or fixed mass method to form a fixed quantity of smoke-releasing particle units 4. The mixed particles of tobacco and plant flavorings can be formed into spherical particles or granular particles with a circular cross section by a granulation process of tobacco and plant flavorings.

[0051] Step 4: Prepare the barrier cooling unit 5:

[0052] The barrier cooling unit 5 is prepared by mixing one or at least two of ceramics, glass, high-polymer environmentally friendly plastics, activated carbon, starch-based materials, tobacco materials, and herbal plant materials; among them, ceramics and glass materials can be made into the barrier cooling unit 5 by a casting process, high-polymer environmentally friendly plastic materials can be made into the barrier cooling unit 5 by an injection molding process, and activated carbon, starch-based materials, tobacco materials, and herbal plant materials can be made into the barrier cooling unit 5 by a screw extrusion process.

[0053] Step 5: Prepare the filtration unit 3:

[0054] The filter unit 3 having a porous structure is formed by at least one of cellulose, raw materials of smoke-releasing particles, and plant raw materials, or by mixing at least two of them.

[0055] Step 6: Cigarette forming:

[0056] The cigarette outer tube 1, the barrier cooling unit 5, and the filter unit 3 are cut into specified lengths, and then the induction heating unit 2, the smoke-releasing particle unit 4, the barrier cooling unit 5, and the filter unit 3 are installed into the cigarette outer tube 1. The two ends of the smoke-releasing particle unit 4 are sealed by the induction heating unit 2 and the barrier cooling unit 5, and the induction heater 8 is embedded in the smoke-releasing particle unit 4 to obtain a cigarette product.

[0057] To verify the effectiveness of the inductively heated granular heated cigarette product provided in this embodiment, the applicant used the granular heated cigarette product provided in this embodiment containing the inductively heated unit 2 as a sample and a granular heated cigarette product not containing the inductively heated unit 2 as a control. The two were compared to obtain graphs showing the smoke emission and smoke temperature of the two products as a function of puffing time. The graphs showing the smoke emission as a function of puffing time are shown in FIG3 , and the graphs showing the smoke temperature as a function of puffing time are shown in FIG4 . As can be seen from FIG3 and FIG4 , under the same conditions, the granular heated cigarette product containing the inductively heated unit 2 has a more sufficient smoke emission and a lower smoke temperature than the granular heated cigarette product not containing the inductively heated unit 2. The granular heated cigarette product containing the inductively heated unit 2 has a significant advantage in both smoke emission and smoke temperature.

[0058] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heat - sensitive particulate heated tobacco product, comprising a hollow outer cigarette tube, characterized in that: An induction heating unit and a filtering unit are respectively provided at two ends of the inner channel of the cigarette outer tube. A smoke-releasing particle unit and a blocking and cooling unit are arranged in the middle section of the inner channel of the cigarette outer tube. The two ends of the smoke-releasing particle unit are respectively blocked by the induction heating unit and the blocking and cooling unit. The induction heating unit includes an inductor base body and an induction heater which are connected to each other, and the induction heater is embedded inside the smoke-releasing particle unit.

2. The particulate heated tobacco product capable of inductive heating according to claim 1, wherein: A plurality of flue gas channels are formed on the inductor base body. The periphery of the inductor base body fits with the inner wall of the cigarette outer tube, and one end of the smoke-releasing particle unit is blocked by the inductor base body.

3. A particulate heated cigarette product capable of inductive heating according to claim 2, characterized in that: The induction heater is made of an electromagnetic induction heating material.

4. A particulate heat-not-burn tobacco product capable of inductive heating as claimed in claim 1, wherein: A gap is left between the blocking and cooling unit and the filtering unit, and a functional unit is arranged in the gap.

5. A particulate heated cigarette product capable of inductive heating according to claim 4, characterized in that: The functional unit is made by mixing at least one of bursting beads, slow-release phase change materials, perfume threads, perfume sachets, cooling particles with a filtering material.

6. The particulate heated tobacco product capable of inductive heating according to claim 1, wherein: A plurality of air channels are arranged inside the blocking and cooling unit. The aperture of the air channels is smaller than the particle size of the smoke-releasing particles in the smoke-releasing particle unit. The blocking and cooling unit is made of one or at least two mixtures of ceramics, glass, high-polymer environmental protection plastics, activated carbon, starch-based materials, tobacco materials, and herbal plant materials.

7. A particulate heated cigarette product capable of inductive heating according to claim 1, wherein: The cigarette outer tube is made of any one or at least two mixtures of pulp fibers, non-tobacco plant fibers, wood pulp fibers, bamboo pulp fibers, and tobacco materials.

8. A particulate heated tobacco product capable of inductive heating according to claim 1, characterized in that: The filtering unit is made of a filtering material alone or made by mixing at least one of bursting beads, slow-release phase change materials, perfume threads, perfume sachets, cooling particles with a filtering material.

9. A particulate heated cigarette product capable of inductive heating as claimed in claim 1, characterized in that: The length of the inductor base body is 2-6 mm, the length of the induction heater is 6-12 mm, the length of the smoke-releasing particle unit is 8-20 mm, the length of the blocking and cooling unit is 5-18 mm, and the length of the filtering unit is 4-12 mm.

10. A method for preparing an inductively heatable particulate heated cigarette product according to any one of claims 1 to 9, characterized in that, It includes the following steps: Step 1, preparing the cigarette outer tube: Any one or at least two of pulp fibers, non-tobacco plant fibers, wood pulp fibers, bamboo pulp fibers, and tobacco materials are mixed to make the cigarette outer tube; Step 2, preparing the induction heating unit: An inductor base body is prepared by using any one of ceramics, clay, glass, non-inductive heating metals and alloys, heat-resistant plastic materials, pulp fibers, tobacco materials, and non-tobacco plant materials. An induction heater is prepared by using an electromagnetic induction heating material, and then the induction heater is fixed on the inductor base body to form the induction heating unit; Step 3, preparing the smoke-releasing particle unit: Pure tobacco particles or mixed particles of tobacco and plant spices are formed into a quantitative smoke-releasing particle unit by a fixed volume or fixed mass method; Step 4, preparing the blocking and cooling unit: The blocking and cooling unit is prepared by mixing one or at least two of ceramics, glass, high-polymer environmental protection plastics, activated carbon, starch-based materials, tobacco materials, and herbal plant materials; Step 5, preparing the filtering unit: At least one or at least two of cellulose, raw materials of smoke-releasing particles, and plant raw materials are mixed to form a filtering unit with a porous structure; Step 6, cigarette forming: Cut the cigarette outer tube, the barrier cooling unit, and the filtering unit into specified lengths, and then load the induction heating unit, the smoke-releasing particle unit, the barrier cooling unit, and the filtering unit into the cigarette outer tube. Rely on the induction heating unit and the barrier cooling unit to seal both ends of the smoke-releasing particle unit, and embed the induction heater into the interior of the smoke-releasing particle unit to obtain a cigarette product.

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