Smoking set heating device

Abstract

The application relates to the field of new tobacco heating technology, in particular to a smoking set heating device which comprises a shell, a laser module and a heated body, a smoke cavity is formed in the shell, the smoke cavity is used for loading a smoke cartridge; the laser module is arranged in the shell and is used for generating heat; the heated body is arranged in the smoke cavity, extends along the axial direction of the smoke cavity, is embedded in the inside of the smoke cartridge and is used for absorbing the heat generated by the laser module so as to heat the smoke cartridge from the inside to the outside along the radial direction. The application adopts a vertical cavity surface emitting laser (VCSEL) as a heating source, the laser energy conversion rate is high, the energy is gathered by cooperating with a light collector, the heated body can reach a preset heating temperature within 5s, the problem of long preheating time of traditional resistance heating and electromagnetic heating is solved, and the user experience is improved.

Description

Technical Field

[0001] This application relates to the field of novel tobacco heating technology, and in particular to a smoking device heating apparatus. Background Technology

[0002] In the emerging tobacco industry, heated tobacco products (HNB) and e-cigarettes are gradually becoming important alternatives to traditional cigarettes due to their low harm and low pollution characteristics. The core technology of these products lies in heating the tobacco raw materials or aerosol within the cartridge using a heating device. This causes the tobacco raw materials to release nicotine and aroma substances, or the e-liquid to atomize and form an aerosol. The heating temperature must be strictly controlled between 200-350℃ (250-350℃ for HNB products, 200-250℃ for e-cigarettes) to prevent the combustion of tobacco raw materials from producing harmful substances.

[0003] Currently, the mainstream heating technologies for cigarette devices on the market mainly include three types: resistance heating, electromagnetic heating, and infrared heating. Among them, resistance heating technology is mature and low-cost, but it has the problems of long preheating time (usually more than 25 seconds) and the need for continuous heating to maintain the temperature; electromagnetic heating, although cleaning-free and with high thermal energy utilization, requires the cartridge to have a non-degradable metal magnet inside, which not only affects the smoking experience but also causes resource waste and environmental pollution. In addition, the heating is uneven, and the heat radiates from the outside to the inside, causing the outer cigarette paper to burn easily, which seriously affects the taste; infrared heating technology has better heating efficiency and heating speed, but it is still in the research and development stage and has not yet been widely promoted. Summary of the Invention

[0004] This application provides a smoking device to solve the problems of long preheating time, uneven heating, easy scorching of cigarette paper, poor taste consistency and insufficient adaptability in the prior art. It realizes rapid heating, uniform heating and dynamic heat replenishment of tobacco cartridges, and improves the smoking experience and product practicality.

[0005] This application provides a smoking appliance heating device, comprising: The casing has a smoke chamber inside, which is used to hold the cigarette cartridge. The laser module, housed within the casing, is used to generate heat. The heat-receiving body is located in the smoke chamber, extends along the axial direction of the smoke chamber, and is embedded inside the smoke cartridge. It is used to absorb the heat emitted by the laser module, thereby heating the smoke cartridge radially from the inside out.

[0006] In one possible design, the laser module includes: substrate; A first vertical cavity surface-emitting laser is integrated on a substrate and is located below the heated body. It is used to emit a laser beam of a specific wavelength toward the end face of the heated body. A concentrator, integrated on a substrate, is located between the first vertical cavity surface-emitting laser and the heated body, and is used to focus the laser beam onto the end face of the heated body.

[0007] In one possible design, the first vertical cavity surface-emitting laser includes multiple first vertical cavity surface-emitting lasers, which are uniformly distributed circumferentially. The multiple first vertical cavity surface-emitting lasers are focused by a concentrator to form multiple first high energy density light spots distributed circumferentially around the central axis of the heated body.

[0008] In one possible design, a second vertical-cavity surface-emitting laser (VCSEL) is also included. The second VCSEL comprises multiple lasers that are uniformly distributed circumferentially. Each laser beam is focused by a concentrator into multiple second high-energy-density laser spots that are circumferentially distributed around the central axis of the heated body. The circumferential diameter of the circle enclosed by the second high-energy-density laser spots is larger than the circumferential diameter of the circle enclosed by the first high-energy-density laser spot and smaller than the end face diameter of the heated body. The second high-energy-density laser spots are intersected with the first high-energy-density laser spots in the circumferential direction.

[0009] In one possible design, the distance between the laser emitting ends of the first vertical cavity surface-emitting laser and the second vertical cavity surface-emitting laser and the end face of the heated body is less than 30 mm.

[0010] In one possible design, a heat sink is also included, which is disposed on the substrate and located around the first vertical cavity surface-emitting laser and the second vertical cavity surface-emitting laser.

[0011] In one possible design, the heat sink has honeycomb-shaped heat-conducting holes inside, and the outer surface of the heat sink has heat dissipation fins extending out of the housing.

[0012] In one possible design, the heating element is a columnar structure, and the diameter of the heating element matches the diameter of the reserved groove at the bottom of the cartridge, so that the heating element can be inserted into the reserved groove at the bottom of the cartridge.

[0013] In one possible design, the inner wall of the smoke chamber is equipped with a temperature and humidity sensor and an infrared spectroscopy sensor. The temperature and humidity sensor is used to collect the temperature of the tobacco cartridge and the humidity of the tobacco raw material, while the infrared spectroscopy sensor is used to collect the concentration of aerosol generation.

[0014] In one possible design, the substrate is a copper-clad substrate, and the heat-receiving element is made of a high thermal conductivity material.

[0015] The beneficial effects of this application are as follows: The smoking device of this application uses a vertical cavity surface-emitting laser (VCSEL) as a heating source. The laser has a high energy conversion rate and, together with a concentrator, concentrates the energy. The heated body can reach the preset heating temperature within 5 seconds, which solves the problem of long preheating time of traditional resistance heating and electromagnetic heating, and improves the user experience.

[0016] By uniformly distributing multiple sets of first vertical cavity surface-emitting lasers and second vertical cavity surface-emitting lasers around the circumference, complementary light spot coverage areas are formed, ensuring that the heated body is heated evenly from the center to the edge; at the same time, the heated body is embedded inside the cigarette cartridge to achieve heating from the inside out, avoiding the outer cigarette paper from being heated and scorched first, thus maximizing the restoration of the original flavor of the cigarette and improving the smoking experience.

[0017] Temperature and humidity sensors and infrared spectroscopy sensors installed on the inner wall of the smoke chamber collect data in real time. The control system dynamically activates the second vertical cavity surface-emitting laser to supplement heat based on the data, effectively solving the problem of "strong at the beginning and weak at the end" during smoking and ensuring consistent taste throughout the smoking process.

[0018] The heat sink adopts a design that combines honeycomb heat conduction holes with heat dissipation fins, which has high heat dissipation efficiency, can effectively protect the laser module, and extend the service life of the device; the heat receiving body has a columnar structure that precisely matches the reserved slot of the smoke cartridge, ensuring stable installation and reducing heat transfer loss. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the smoking appliance heating device provided in the embodiments of this application; Figure 2 A diagram illustrating the usage state of the smoking appliance heating device provided in the embodiments of this application; Figure 3 A diagram showing the positions of the first vertical cavity surface-emitting laser and the second vertical cavity surface-emitting laser in the smoking device provided in the embodiments of this application.

[0021] Figure 4 The location diagram of the first high energy density light spot and the second high energy density light spot formed by the smoking device heating device provided in the embodiment of this application.

[0022] Figure label: 1. Housing; 11. Smoke chamber; 2. Smoke cartridge; 3. Laser module; 31. Substrate; 32. First vertical cavity surface-emitting laser; 33. Second vertical cavity surface-emitting laser; 4. Heat receiver; 5. Heat sink; 61. First high energy density spot; 62. Second high energy density spot; 7. Temperature and humidity sensor; 8. Infrared spectral sensor. Detailed Implementation

[0023] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] The following is combined Figures 1-4 This describes the smoking appliance heating device provided in the embodiments of this application.

[0025] Reference Figure 1 , Figure 2 As shown, the smoking device heating device provided in this application embodiment includes a housing 1, a laser module 3, and a heating element 4.

[0026] A smoke chamber 11 is formed inside the shell 1. The smoke chamber 11 is used to load the tobacco cartridge 2 and provides a stable heating space for the tobacco cartridge 2. Its size is compatible with the common tobacco cartridge 2 specifications to ensure that the tobacco cartridge 2 is fixed in position after being loaded and to avoid displacement during the heating process, which would affect the heating effect.

[0027] The laser module 3 is housed within the casing 1 and generates heat to provide an energy source for heating the tobacco cartridge 2. Specifically, the laser module 3 includes a substrate 31, a first vertical-cavity surface-emitting laser 32, a second vertical-cavity surface-emitting laser 33, a concentrator, and a heating element 4. The substrate 31 is a copper-clad substrate, possessing good thermal conductivity and electrical connection performance, providing a stable mounting carrier for the laser device and other components. The first vertical-cavity surface-emitting laser 32 is integrated on the substrate 31 and located below the heating element 4, used to emit a laser beam of a specific wavelength towards the end face of the heating element 4. Preferably, the first vertical-cavity surface-emitting laser 32 emits an infrared laser with a wavelength of 850nm towards the end face of the heating element 4, matching the absorption wavelength of the tobacco raw material and the heating element 4, achieving an energy absorption rate of over 80%. The second vertical-cavity surface-emitting laser 33, as a heat supplement component, is integrated on the substrate 31 and works in conjunction with the first vertical-cavity surface-emitting laser 32 to achieve precise temperature control. Both the first vertical cavity surface-emitting laser 32 and the second vertical cavity surface-emitting laser 33 are VCSEL chips with a wavelength of 850nm.

[0028] The concentrator is integrated on the substrate 31 and located between the first vertical cavity surface-emitting laser 32, the second vertical cavity surface-emitting laser 33 and the heated body 4. It is used to focus the laser beam onto the end face of the heated body 4 to form a high energy density spot and ensure that the heat is concentrated on the heated body 4.

[0029] The heat receiver 4 is disposed in the smoke chamber 11 and extends along the axial direction of the smoke chamber 11. During use, it is embedded inside the smoke cartridge 2 to absorb the heat emitted by the laser module 3, thereby heating the smoke cartridge 2 radially from the inside out. Specifically, the heat receiver 4 has a columnar structure and is made of a high thermal conductivity material, such as copper, stainless steel, or aluminum nitride ceramic, with a thermal conductivity ≥20 W / (m²). K). The diameter of the heated body 4 matches the diameter of the reserved groove at the lower end of the cigarette cartridge 2, so that the heated body 4 can be tightly inserted into the reserved groove at the lower end of the cigarette cartridge 2, reducing heat loss during the heat transfer process and ensuring heating uniformity.

[0030] Reference Figure 3 , Figure 4 As shown, in some specific embodiments, the first vertical-cavity surface-emitting laser 32 includes multiple lasers, which are uniformly distributed circumferentially. Each of the multiple lasers 32 uses a concentrator to focus its laser beam into multiple first high-energy-density laser spots 61 distributed circumferentially around the central axis of the heated body 4. This uniform circumferential distribution of multiple lasers ensures that the end face of the heated body 4 receives laser energy uniformly, preventing localized overheating and ensuring a balanced overall temperature. The second vertical-cavity surface-emitting laser 33 includes multiple lasers, which are uniformly distributed circumferentially. Each of the multiple lasers 33 uses a concentrator to focus its laser beam into multiple second high-energy-density laser spots 62 distributed circumferentially around the central axis of the heated body 4. The circumferential diameter of the circle enclosed by the second high-energy-density laser spots 62 is larger than the circumferential diameter of the circle enclosed by the first high-energy-density laser spots 61 but smaller than the diameter of the end face of the heated body 4. The beam distribution of the second vertical cavity surface-emitting laser 33 covers the edge region of the end face of the heated body 4, complementing the beam of the first vertical cavity surface-emitting laser 32, ensuring the temperature uniformity of the heated body 4 from the center to the edge, and providing support for dynamic heat replenishment.

[0031] For example, six first vertical-cavity surface-emitting lasers (VCSELs) 32 are uniformly distributed circumferentially along the center of the substrate 31, with adjacent lasers at an angle of 60°. Their corresponding concentrators focus the laser beams into a first high-energy-density spot 61, with a circumferential diameter of 4 mm enclosed by the six first spots. Similarly, six second VCSELs 33 are also uniformly distributed circumferentially, located outside the first VCSELs 32. Their corresponding concentrators focus the laser beams into a second high-energy-density spot 62, with a circumferential diameter of 6 mm enclosed by the six second spots, smaller than the end face diameter of the heated body 4 (8 mm). Furthermore, along the circumference, the six first spots and six second spots are spaced and interleaved, forming complementary spot coverage areas to ensure uniform heating of the heated body 4 from the center to the edge.

[0032] In some specific embodiments, the distance between the laser emitting ends of the first vertical cavity surface-emitting laser 32 and the second vertical cavity surface-emitting laser 33 and the end face of the heated body 4 is less than 30mm. This distance setting can reduce the energy attenuation of the laser in the air, ensure that the energy density on the surface of the heated body 4 is stable at 20-50W / cm², and ensure rapid heating effect.

[0033] In some specific embodiments, the smoking device heating apparatus further includes a heat sink 5, which is disposed on the substrate 31 and located around the first vertical cavity surface-emitting laser 32 and the second vertical cavity surface-emitting laser 33. The heat sink 5 has honeycomb-shaped heat-conducting holes inside, and the honeycomb structure maximizes the heat dissipation surface area of ​​the heat sink 5, improving heat conduction efficiency. The outer surface of the heat sink 5 is provided with heat dissipation fins extending outside the housing 1, further enhancing the heat dissipation effect and quickly dissipating the Joule heat generated during the operation of the laser module 3, ensuring that the laser operating temperature is controlled below 60°C, avoiding laser wavelength drift or power attenuation, and extending the device's lifespan.

[0034] In some specific embodiments, the inner wall of the smoke chamber 11 is equipped with a temperature and humidity sensor 7 and an infrared spectral sensor 8. The temperature and humidity sensor 7 is used to collect the temperature of the tobacco cartridge 2 and the humidity of the tobacco raw material in real time, and the infrared spectral sensor 8 is used to collect the aerosol generation concentration in real time. When the sensor detects that the temperature of the tobacco cartridge 2 is low, the humidity of the tobacco raw material is high, or the aerosol generation is lower than a preset value, the control system automatically activates the second vertical cavity surface-emitting laser 33 to perform precise heat replenishment, ensuring consistent taste during smoking and avoiding the problem of "strong at the beginning and weak at the end".

[0035] The working process of the smoking appliance heating device in this application is as follows: During the initial heating stage, the user inserts the cartridge 2 into the smoke chamber 11 of the housing 1. The pre-reserved groove at the lower end of the cartridge 2 fits tightly with the heating element 4, which is embedded inside the cartridge 2. After the device is started, the control system inputs a driving current to the first vertical cavity surface laser 32. The first vertical cavity surface laser 32 generates infrared laser of a specific wavelength. The laser beam is focused by a concentrator into multiple first high-energy-density light spots 61, which are uniformly irradiated on the end face of the heating element 4. After absorbing the laser energy, the heating element 4 heats up rapidly. Through heat conduction, heat is transferred radially from the inside to the outside, so that the tobacco raw material or e-liquid in the inner layer of the cartridge 2 first reaches the preset temperature (250-350℃ for HNB products, 200-250℃ for atomized electronic cigarettes), and then gradually diffuses outward to the outer layer. This avoids the outer cigarette paper being heated first and producing a burnt taste. The entire preheating process only takes about 5 seconds, significantly reducing the user's waiting time.

[0036] During the dynamic heating phase, the temperature and humidity sensor 7 and the infrared spectroscopy sensor 8 on the inner wall of the smoke chamber 11 collect real-time data on the temperature of the tobacco cartridge 2, the humidity of the tobacco raw material, and the concentration of aerosol generation, and transmit the data to the control system. When the temperature of the tobacco cartridge 2 is detected to be lower than the preset threshold, the humidity of the tobacco raw material is too high, resulting in insufficient heating, or the amount of aerosol generation is lower than the preset value, the control system automatically activates the second vertical cavity surface-emitting laser 33. The laser beam generated by it is focused by a concentrator into a second high-energy-density light spot 62, which irradiates the edge area of ​​the end face of the heated body 4 for precise heating, ensuring that the temperature of each area of ​​the tobacco cartridge 2 is uniform and the amount of aerosol generation is stable, avoiding the problem of "strong at the beginning and weak at the end" during smoking.

[0037] When the laser module 3 is working, a small amount of Joule heat is generated and transferred to the heat sink 5 through the substrate 31. The honeycomb heat conduction holes inside the heat sink 5 quickly conduct heat, and then the heat is dissipated to the outside of the housing 1 through the heat dissipation fins on the outer surface, forming an efficient heat dissipation cycle to ensure that the laser module 3 continues to work stably.

[0038] The heating device of this application achieves rapid and uniform heating of the tobacco cartridge 2 by combining laser heating and dynamic heat replenishment. The preheating time is only 5 seconds, and the temperature difference between different areas of the tobacco cartridge 2 is controlled within ±3℃, which effectively avoids the burnt taste of cigarette paper and improves the consistency of the smoking experience.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0040] Furthermore, the terms "first" and "second" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A heating device for smoking appliances, characterized in that, include: A housing having a smoke chamber inside, the smoke chamber being used to insert a cigarette cartridge; A laser module, housed within the housing, is used to generate heat; A heat-receiving body is disposed in the smoke chamber, extends along the axial direction of the smoke chamber, and is embedded inside the smoke cartridge. It is used to absorb the heat emitted by the laser module, thereby heating the smoke cartridge radially from the inside out.

2. The smoking appliance heating device according to claim 1, characterized in that, The laser module includes: substrate; A first vertical cavity surface-emitting laser is integrated on the substrate. The first vertical cavity surface-emitting laser is located below the heated body and is used to emit a laser beam of a specific wavelength toward the end face of the heated body. A concentrator, integrated on the substrate, is located between the first vertical cavity surface-emitting laser and the heated body, and is used to focus the laser beam onto the end face of the heated body.

3. The smoking appliance heating device according to claim 2, characterized in that, The first vertical cavity surface-emitting laser includes multiple lasers, which are uniformly distributed circumferentially. The laser beams of the multiple lasers are focused by a concentrator into multiple first high-energy-density laser spots distributed circumferentially around the central axis of the heated body.

4. The smoking appliance heating device according to claim 3, characterized in that, It also includes a second vertical cavity surface-emitting laser, which comprises multiple second vertical cavity surface-emitting lasers. These multiple second vertical cavity surface-emitting lasers are uniformly distributed circumferentially. The laser beams of the multiple second vertical cavity surface-emitting lasers are focused by a concentrator into multiple second high-energy-density light spots distributed circumferentially around the central axis of the heated body. The circumferential diameter of the circle enclosed by the second high-energy-density light spots is larger than the circumferential diameter of the circle enclosed by the first high-energy-density light spots and smaller than the end face diameter of the heated body. The second high-energy-density light spots are intersected with the first high-energy-density light spots in the circumferential direction.

5. The smoking appliance heating device according to claim 4, characterized in that, The distance between the laser emitting end of the first vertical cavity surface-emitting laser and the second vertical cavity surface-emitting laser and the end face of the heated body is less than 30 mm.

6. The smoking appliance heating device according to claim 5, characterized in that, It also includes a heat sink disposed on the substrate and located around the first vertical cavity surface-emitting laser and the second vertical cavity surface-emitting laser.

7. The smoking appliance heating device according to claim 6, characterized in that, The heat sink has honeycomb-shaped heat-conducting holes inside, and the outer surface of the heat sink is provided with heat dissipation fins extending out of the shell.

8. The smoking appliance heating device according to any one of claims 1-7, characterized in that, The heating element is a columnar structure, and its diameter matches the diameter of the pre-reserved groove at the lower end of the cartridge, so that the heating element can be inserted into the pre-reserved groove at the lower end of the cartridge.

9. The smoking appliance heating device according to any one of claims 1-7, characterized in that, The inner wall of the smoke chamber is equipped with a temperature and humidity sensor and an infrared spectral sensor. The temperature and humidity sensor is used to collect the temperature of the tobacco cartridge and the humidity of the tobacco raw material, and the infrared spectral sensor is used to collect the concentration of aerosol generation.

10. The smoking appliance heating device according to claim 2, characterized in that, The substrate is a copper-clad substrate, and the heat-receiving body is made of a high thermal conductivity material.

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