A coil-inlay type heating smoking set

Abstract

The application discloses a coil-embedded heating smoking set, which comprises a tobacco substance accommodating cavity (5) and an airflow heating assembly (6); the airflow heating assembly (6) comprises a heating body (603) and an induction coil (602); the induction coil (602) is embeddedly arranged in the heating body (603); a plurality of airflow heating holes (601) are formed in the heating body (603) in an axial direction; the tobacco substance accommodating cavity (5) and the airflow heating assembly (9) are axially aligned along the smoking set; the bottom end of the tobacco substance accommodating cavity (5) corresponds to the airflow heating holes (601) of the heating body (603). The coil-embedded heating smoking set has the advantages of high heat utilization rate, low energy consumption, simplified structure, reduced cost, uniform heating and good smoking stability.

Description

Technical Field

[0001] This invention belongs to the field of tobacco machinery technology, specifically relating to a coil-embedded heating tobacco appliance. Background Technology

[0002] Heated tobacco products, as a new type of tobacco product, use a smoking device to heat the tobacco matrix to 200–350°C, releasing an aerosol containing nicotine and flavoring substances in a non-combustible state. Compared with traditional combustible cigarettes, they can significantly reduce the release of harmful substances such as tar and carbon monoxide, which is in line with the trend of tobacco harm reduction and has become an important research and development direction in the industry.

[0003] Existing heated tobacco products are mainly divided into three categories: center heating, circumferential heating, and airflow heating. Center heating uses a heating needle or heating plate inserted into the cigarette, which is simple in structure and low in cost, but suffers from uneven heating, local overheating and carbonization, and poor stability per puff, affecting taste and lifespan. Circumferential heating uses a cavity to wrap the cigarette, which improves heating uniformity, but has high thermal inertia, slow heating and cooling, and high energy consumption, and the temperature difference between the edge and the center is still difficult to control precisely. Airflow heating technology uses air as a medium, using resistance or electromagnetic heating of the air, which then heats the tobacco material. Existing electromagnetic induction airflow heating technology generally uses an external coil solution, which has high energy consumption, most of the heat generated by the coil cannot be effectively utilized, and it also requires the design of complex heat insulation and magnetic shielding systems, resulting in a large size and affecting the consumer experience.

[0004] Patent CN114515027A employs a circumferential heating scheme with an external coil and an internal heat receiver; however, an insulation layer is required to ensure a good consumer experience. Patent CN212520790U employs an axial heating scheme with an external coil. This invention proposes embedding the coil inside the heat receiver to improve heat utilization efficiency.

[0005] This invention is proposed for this purpose. Summary of the Invention

[0006] This invention discloses a heated non-combustible cigarette (HNB) smoking device, and more particularly relates to a coil-embedded heated smoking device. The coil-embedded heated smoking device of this invention has high heat utilization rate, low energy consumption, simplified structure, low manufacturing cost, uniform heating, and good smoking stability.

[0007] The technical solution of the present invention is as follows:

[0008] A coil-embedded heating smoking device, the smoking device comprising: a tobacco material receiving cavity 5 and an airflow heating component 6;

[0009] The airflow heating assembly 6 includes a heating element 603 and an induction coil 602; the induction coil 602 is embedded inside the heating element 603, and the heating element 603 has several through airflow heating holes 601 along the axial direction; the tobacco material receiving cavity 5 and the airflow heating assembly 9 are aligned along the axial direction of the smoking device, and the bottom end of the tobacco material receiving cavity 5 corresponds to the airflow heating holes 601 of the heating element 603; external airflow can pass through the airflow heating holes 601 along the axial direction to complete heat exchange; the size of the tobacco material receiving cavity 5 is adapted to the size of the heating section of the tobacco material 2, and it has a certain airtightness after the tobacco material 2 is inserted; the heated airflow directly acts on the tobacco material 2, and ensures good sealing.

[0010] Preferably, the heated body 603 has a cylindrical structure, and the induction coil 602 is arranged around the inner side of the heated body 603; the induction coil 602 is made of magnetic material and can accept magnetic field signals to generate eddy currents.

[0011] Preferably, the heated body 603 is a cylindrical heated cylinder 6032 with a cylinder wall hole 60321.

[0012] Preferably, the heat-receiving body 603 consists of multiple ring-shaped heat-receiving rings 6031 arranged parallel to each other along the axial direction; each heat-receiving ring 6031 is provided with multiple holes 60311.

[0013] Preferably, the heated body 603 is a ferromagnetic material; the ferromagnetic material is a ferromagnetic material with thermosensitive properties or a ferromagnetic material with magnetostrictive properties, and the pore size can change when the temperature or magnetic field changes, thereby changing the airflow heating effect.

[0014] Preferably, a heat insulation cylinder 610 is provided around the heated body 603.

[0015] Preferably, a heating element 612 is provided on the inner or outer side of the induction coil 602; and air holes are provided on the side wall of the heating element 612.

[0016] Preferably, the smoking device further includes: a housing 1, an indicator light 3, a button 4, a control board 7, and a power supply 8; the indicator light 3 and the button 4 are fixedly installed on the outer wall of the housing 1; the tobacco material receiving cavity 5, the airflow heating component 6, the control board 7, and the power supply 8 are all located inside the housing 1; the control board 7 is electrically connected to the button 4, the indicator light 3, the airflow heating component 6, and the power supply 8 respectively; an air inlet is provided on the wall of the housing 1 to ensure a stable airflow path during inhalation; the button 4 is a function touch key or a physical button, which at least has the function of starting and stopping the device, and can also be expanded to include temperature adjustment and mode switching functions; the indicator light 3 can distinguish different working states of the smoking device such as standby, heating, low battery, and fault; when the control board 7 receives the start signal, it provides a certain frequency of AC power to the induction coil 602, so that the heated body 603 quickly generates eddy currents to heat the passing airflow.

[0017] Preferably, the control board 7 includes a temperature acquisition module, a timing module, and a circuit control module. The control board 7 controls the heating temperature and heating duration of the airflow heating component 6, and provides feedback on the operating status, power consumption, and heating progress of the smoke appliance via indicator lights 3. The temperature acquisition module collects real-time data on the temperature of the heated body 603 and the airflow, and adjusts it in real-time to prevent overheating.

[0018] The beneficial effects of this invention are:

[0019] 1. The coil-embedded heating smoke hood of the present invention has high heat utilization rate and low energy consumption. The smoke hood of the present invention abandons the traditional external induction coil structure, and embeds the induction coil inside the heating body. The heat generated by the operation of the induction coil can be directly transferred to the heating body and the air flowing through the airflow heating hole. The heat is fully utilized, which greatly reduces the overall energy consumption of the equipment and solves the problem of serious heat loss when the induction coil is external.

[0020] 2. The coil-embedded heating appliance of the present invention has a simplified structure and reduced cost. The built-in coil layout of the present invention significantly reduces excess heat radiated outwards, eliminates the need for complex multi-layer heat insulation structures, simplifies the internal assembly structure of the appliance, reduces equipment size, and lowers production and assembly costs.

[0021] 3. The coil-embedded heating device of the present invention provides uniform heating and good suction stability. Axial airflow heating holes are uniformly opened on the heating body, and the airflow flows along a fixed axis for heat exchange. The high-temperature airflow is evenly distributed, heating the tobacco matrix throughout, avoiding local overheating and carbonization, improving the stability of aerosol release per puff, and optimizing the smoking experience. The heating effect can be adjusted by changing the hole diameter and number. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the smoking device structure of the present invention.

[0023] Figure 2A schematic diagram of a smoking device with tobacco material inserted.

[0024] Figure 3 This is a schematic diagram of the airflow heating assembly in Example 1.

[0025] Figure 4 This is a cross-sectional view of the airflow heating assembly in Example 2.

[0026] Figure 5 This is a schematic diagram of the heating element in Example 2.

[0027] Figure 6 This is a schematic diagram of the heating network in Example 2.

[0028] Figure 7 This is a cross-sectional view of the airflow heating assembly in Example 3.

[0029] Figure 8 This is a schematic diagram of the heating element in Example 3.

[0030] Figure 9 This is a schematic diagram of the heating element in Example 3.

[0031] The attached figures are labeled as follows: 1-Outer shell; 2-Tobacco material; 3-Indicator light; 4-Button; 5-Tobacco material receiving cavity; 6-Airflow heating assembly; 601-Airflow heating hole; 602-Induction coil; 603-Heated body; 6031-Heated ring plate; 60311-Plate hole; 6032-Heated cylinder; 60321-Cylinder wall hole; 610-Insulation cylinder; 612-Heating element; 7-Control panel; 8-Power supply. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] Furthermore, the terms “first”, “second”, etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," "adhesion," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this specification, the illustrative expressions of the terms used above should not be construed as necessarily referring to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0037] The present invention provides a coil-embedded heating smoking device, the smoking device comprising: a tobacco material receiving cavity 5 and an airflow heating component 6;

[0038] The airflow heating assembly 6 includes a heating element 603 and an induction coil 602; the induction coil 602 is embedded inside the heating element 603, and the heating element 603 has several through airflow heating holes 601 along the axial direction; the tobacco material receiving cavity 5 and the airflow heating assembly 9 are aligned along the axial direction of the smoking device, and the bottom end of the tobacco material receiving cavity 5 corresponds to the airflow heating holes 601 of the heating element 603; external airflow can pass through the airflow heating holes 601 along the axial direction to complete heat exchange; the size of the tobacco material receiving cavity 5 is adapted to the size of the heating section of the tobacco material 2, and it has a certain airtightness after the tobacco material 2 is inserted; the heated airflow directly acts on the tobacco material 2, and ensures good sealing.

[0039] The heated body 603 has a cylindrical structure, and the induction coil 602 is arranged around the inner side of the heated body 603. The induction coil 602 is made of magnetic material and can accept magnetic field signals to generate eddy currents.

[0040] Preferably, the heated body 603 is a cylindrical heated cylinder 6032 with a cylinder wall hole 60321.

[0041] Preferably, the heat-receiving body 603 is a plurality of ring-shaped heat-receiving rings 6031 arranged parallel to each other along the axial direction; each heat-receiving ring 6031 is provided with a plurality of plate holes 60311.

[0042] The heated body 603 is a ferromagnetic material; the ferromagnetic material is a ferromagnetic material with thermosensitive properties or a ferromagnetic material with magnetostrictive properties. When the temperature or magnetic field changes, the pore size can change, thereby changing the airflow heating effect.

[0043] The heat-receiving body 603 is surrounded by a heat insulation cylinder 610.

[0044] A heating element 612 is provided on the inner or outer side of the induction coil 602; air holes are provided on the side wall of the heating element 612.

[0045] The smoking device further includes: a housing 1, an indicator light 3, a button 4, a control board 7, and a power supply 8; the indicator light 3 and the button 4 are fixedly installed on the outer wall of the housing 1; the tobacco material receiving cavity 5, the airflow heating component 6, the control board 7, and the power supply 8 are all located inside the housing 1; the control board 7 is electrically connected to the button 4, the indicator light 3, the airflow heating component 6, and the power supply 8 respectively; an air inlet is provided on the wall of the housing 1 to ensure a stable airflow path during inhalation; the button 4 is a function touch key or physical button, which at least has the function of starting and stopping the device, and can also be expanded to set temperature adjustment and mode switching functions; the indicator light 3 can distinguish different working states of the smoking device such as standby, heating, low battery, and fault; when the control board 7 receives the start signal, it provides a certain frequency of AC power to the induction coil 602, so that the heated body 603 quickly generates eddy currents to heat the passing airflow.

[0046] The control board 7 includes a temperature acquisition module, a timing module, and a circuit control module. The control board 7 controls the heating temperature and heating duration of the airflow heating component 6, and provides feedback on the operating status, power consumption, and heating progress of the smoke hood via indicator lights 3. The temperature acquisition module collects real-time data on the temperature of the heated body 603 and the airflow, and adjusts the temperature accordingly to prevent overheating.

[0047] Example 1

[0048] like Figure 1 As shown in Example 2, the smoking device in this embodiment consists of a shell 1, an indicator light 3, a button 4, and a tobacco material receiving cavity 5. Figure 2 It consists of eight major components: tobacco substances (2), airflow heating assembly (6), control board (7), and power supply (8).

[0049] A circular cigarette holder is provided at the top of the outer casing 1, which is connected to the tobacco material receiving cavity 5; two mounting slots are provided on the upper part of the side wall of the outer casing, which respectively embed the indicator light 3 and the button 4; a charging interface through hole is provided at the bottom of the outer casing for power charging; an integrated positioning bracket and annular slot are provided inside the outer casing 1 to limit the tobacco material receiving cavity 5, the airflow heating component 6, the control board 7, and the battery 8 axially and radially, preventing the components from loosening during use;

[0050] The tobacco material receiving cavity 5 is a hollow cylindrical cavity with its upper end connected to the outer shell's cigarette insertion port and its lower end being a flat annular end face. The lower end face of the cavity is sealed and pressed tightly against the upper end face of the heat-receiving body of the airflow heating component 6 below. A high-temperature resistant silicone sealing ring is set at the joint between the two to prevent side leakage of high-temperature airflow. The interior is used to place the tobacco material 2 (heated non-combustible cigarette). After the cigarette is inserted, the tobacco section is directly facing the airflow heating hole 601 to ensure direct heating by high-temperature airflow. The airflow heating component consists of the heat-receiving body 603, the induction coil 602, and the airflow heating hole 601, and is the core of the entire heating system.

[0051] When the control board 7 receives the start signal, it provides a certain frequency of alternating current to the induction coil 602, so that the heated body 603 quickly generates eddy currents and heats up the airflow. The heated body 903 is a thermistor ferromagnetic material. When the induction coil 602 is completely embedded in the heated body 603 with no exposed part, the heated body completely wraps the coil.

[0052] like Figure 3 As shown, the airflow heating hole 601 is a circular through hole, and the heated body 603 is made of magnetostrictive material. When the heated body 603 is heated in a magnetic field, the diameter of the airflow heating hole 601 decreases, making the airflow heating more uniform. Multiple airflow heating holes 601 are provided and are evenly arranged in a ring around the circumference of the heated body. The axis of all airflow heating holes 601 is parallel to the central axis of the smoking device, forming multiple independent axial airflow channels. The airflow heating hole 601 penetrates the heated body from top to bottom, with the upper end connected to the tobacco material receiving cavity 5 and the lower end connected to the internal air passage of the whole machine. The sucked airflow passes through the heating hole along the entire axial direction to complete the heat exchange.

[0053] The control board 7 integrates a temperature acquisition module, a timing module, and a circuit control module. The temperature acquisition module collects the temperature of the heated body 603 and the airflow in real time and makes real-time adjustments to prevent the temperature from getting too high.

[0054] In this embodiment, the axially distributed airflow heating holes ensure uniform airflow velocity and consistent heating of the tobacco matrix, preventing localized high-temperature carbonization and ensuring a stable flavor with each puff. The heating element 603 is made of magnetostrictive material, which can reduce the diameter of the air holes when the magnetic field changes, improving heating uniformity and compensating for insufficient machining. The induction coil 602 is completely wrapped by the heating element 603, radiating very little heat outward, eliminating the need for additional complex insulation layers. The whole machine has a compact structure and small size.

[0055] Example 2

[0056] The heating appliance in this embodiment is the same as in Embodiment 1.

[0057] The airflow heating assembly 6 includes a heat insulation cylinder 610, a heating body 612, and a heating cylinder 6032. The heating body 612 is equipped with an induction coil 602 and circumferential airflow heating holes 601 and a central airflow heating hole 601. The heating body 612 is a heat transfer material, and the airflow can be heated when it passes through the air holes. The heat insulation cylinder 610 is provided on the outside, which serves two purposes: to seal and form an air passage, and to reduce the outward transfer of heat.

[0058] like Figure 4 and Figure 6 As shown, the heating cylinder 6032 is installed outside the heating body 612 and fits tightly to ensure that the generated heat can be transferred to the heating body 612. The heating cylinder 6032 is provided with a cylinder wall hole 60321 to increase the contact area with air and improve the air heating efficiency.

[0059] Button 4 has at least the function of starting and stopping the device, and can also be expanded to include temperature adjustment and mode switching functions.

[0060] Indicator light 3 can distinguish different working states of the smoking appliance, such as standby, heating, low battery, and malfunction.

[0061] When the control board 7 receives the start signal, it provides a certain frequency of alternating current to the induction coil 602, causing the heating cylinder 6032 to quickly generate eddy currents and heat the passing airflow.

[0062] The control board 7 integrates a temperature acquisition module, a timing module, and a circuit control module. The temperature acquisition module collects the temperature of the heated cylinder 6032 and the airflow in real time and makes real-time adjustments to prevent the temperature from getting too high.

[0063] In this embodiment, the axially distributed airflow heating hole 601 ensures uniform airflow velocity, and the tobacco material 2 is heated evenly as a whole, without local high-temperature carbonization, resulting in a stable taste with each puff; the induction coil 602 is completely wrapped by the heating cylinder 6032, radiating very little heat outward, and the whole machine has a compact structure and small size.

[0064] Example 3

[0065] The heating appliance in this embodiment is the same as in Embodiment 1.

[0066] like Figure 7 and Figure 9 As shown, the airflow heating assembly 6 includes a heat insulation cylinder 610, a heating element 612, and multiple heated ring plates 6031. An induction coil 602 is provided inside, and a circumferential airflow heating hole 601 is also provided. The heating element 612 is a heat transfer material, and the airflow can be heated when it passes through the air hole. The heat insulation cylinder 610 is provided outside, one function of which is to seal and form an air passage, and the other is to reduce the heat transfer to the outside.

[0067] Multiple heating ring plates 6031 (four in this embodiment) are installed on the outside of the heating element 612. Multiple small holes (plate holes 60311, such as...) are provided on the heating ring plates 6031. Figure 9 As shown, the airflow is heated when it passes through the plate hole 60311. Multiple heated ring plates 6031 cause the air to be heated multiple times, improving the air heating efficiency and heating uniformity.

[0068] There is a certain distance between the multiple heated ring plates 6031 and the heat insulation cylinder 610 to reduce the heat transfer to the heat insulation cylinder 610.

[0069] Button 4 has at least the function of starting and stopping the device, and can also be expanded to include temperature adjustment and mode switching functions.

[0070] Indicator light 3 can distinguish different working states of the smoking appliance, such as standby, heating, low battery, and malfunction.

[0071] When the control board 7 receives the start signal, it provides a certain frequency of alternating current to the induction coil 602, causing the heating cylinder 6032 to quickly generate eddy currents and heat the passing airflow.

[0072] The control board 7 integrates a temperature acquisition module, a timing module, and a circuit control module. The temperature acquisition module collects the temperature of the heated cylinder 6032 and the airflow in real time and makes real-time adjustments to prevent the temperature from getting too high.

[0073] In this embodiment, the axially distributed airflow heating holes 601 and plate holes 60311 ensure uniform airflow velocity, consistent heating of the tobacco material 2 as a whole, no local high-temperature carbonization, and stable taste with each puff; the induction coil 602 is completely wrapped by multiple heating ring plates 6031, radiating very little heat outward, and the whole machine has a compact structure and small size.

[0074] The above embodiments are not intended to limit the present invention, nor is the present invention limited to the examples described above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the present invention are also within the protection scope of the present invention.

Claims

1. A coil-embedded heating smoke appliance, characterized in that, The smoking device includes: a tobacco material receiving cavity (5) and an airflow heating component (6); The airflow heating assembly (6) includes a heating body (603) and an induction coil (602); the induction coil (602) is embedded in the interior of the heating body (603), and the heating body (603) has a plurality of through airflow heating holes (601) along the axial direction; the tobacco material receiving cavity (5) and the airflow heating assembly (9) are aligned along the axial direction of the smoking device, and the bottom end of the tobacco material receiving cavity (5) corresponds to the airflow heating hole (601) of the heating body (603).

2. The coil-embedded heating smoke appliance according to claim 1, characterized in that, The heated body (603) has a cylindrical structure, and the induction coil (602) is arranged around the inner side of the heated body (603).

3. The coil-embedded heating smoke appliance according to claim 2, characterized in that, The heat-receiving body (603) is a cylindrical heat-receiving cylinder (6032) with a cylinder wall hole (60321).

4. The coil-embedded heating smoke appliance according to claim 2, characterized in that, The heat-receiving body (603) consists of multiple ring-shaped heat-receiving rings (6031) arranged parallel to each other along the axial direction; each heat-receiving ring (6031) is provided with multiple holes (60311).

5. The coil-embedded heating smoke appliance according to claim 2, characterized in that, The heated body (603) is a ferromagnetic material; the ferromagnetic material is a ferromagnetic material with thermosensitive properties or a ferromagnetic material with magnetostrictive properties.

6. The coil-embedded heating smoke appliance according to claim 2, characterized in that, The heat-receiving body (603) is surrounded by a heat insulation cylinder (610).

7. The coil-embedded heating smoke appliance according to claim 1, characterized in that, A heating element (612) is provided on the inner or outer side of the induction coil (602); air holes are provided on the side wall of the heating element (612).

8. The coil-embedded heating smoke appliance according to claim 1, characterized in that, The smoking device also includes: a shell (1), an indicator light (3), a button (4), a control board (7), and a power supply (8); the indicator light (3) and the button (4) are fixedly installed on the outer wall of the shell (1); the tobacco material receiving cavity (5), the airflow heating component (6), the control board (7), and the power supply (8) are all located inside the shell (1); the control board (7) is electrically connected to the button (4), the indicator light (3), the airflow heating component (6), and the power supply (8) respectively; an air inlet is provided on the wall of the shell (1).

9. The coil-embedded heating smoke appliance according to claim 1, characterized in that: The control board (7) includes a temperature acquisition module, a timing module, and a circuit control module.

Images