Line laser heating equipment and control method

Abstract

The invention relates to the technical field of heat-not-burn cigarettes, in particular to a line laser heating device which comprises a cigarette containing frame used for containing cigarette cartridges. The laser module is arranged on the outer side of the cigarette placing frame and used for generating line laser to heat the cigarette cartridges; the reflection module is arranged on a light emitting path of the laser module and is used for converging the line laser to the surface of the smoke cartridge; the driving module is arranged at the bottom of the cigarette placing frame and used for driving the cigarette cartridges to rotate at intervals; and the control assembly is electrically connected with the laser module and the driving module and is used for controlling the output power of the laser module and the rotation action of the smoke cartridge. Through the convergence effect of the optimally designed Vcsel line laser module and the small-angle reflector, the utilization rate of laser energy is improved, the electric power of the whole machine can be controlled within 40 W, the overall power consumption is reduced, the heat dissipation pressure is reduced, and a foundation is laid for the miniaturization and lightweight design of equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat-not-burn cigarettes, and in particular to a linear laser heating device and a control method. BACKGROUND

[0002] As a core component of new tobacco products, the heating method of an electronic cigarette heating device directly affects user experience and product performance. Current mainstream heating technologies include resistance heating, electromagnetic heating, and infrared heating. Resistance heating technology is mature and low in cost, but has problems such as poor heating uniformity, easy breakage of the heating body, and the need for regular cleaning; electromagnetic heating is free of cleaning and has high thermal efficiency, but the heating uniformity is still not ideal; as an emerging technology, infrared heating has potential in heating efficiency and heating speed, but has not been widely promoted, and has problems such as high overall power consumption, high heat dissipation demand, and difficulty in miniaturization.

[0003] In addition, existing heating devices generally have long preheating times, high overall power consumption when powered, high power supply pressure, high heat dissipation demand, and other problems that are not conducive to device miniaturization, making it difficult to meet the comprehensive needs of consumer-grade electronic cigarettes for fast response, uniform heating, and portability.

[0004] Therefore, there is an urgent need for a new heating scheme that can balance heating efficiency, uniformity, low power consumption, and portability. SUMMARY

[0005] The present application provides a linear laser heating device and a control method to solve the problems of high overall power consumption when powered, high power supply pressure, and high heat dissipation demand of existing linear laser heating devices.

[0006] The present application provides a linear laser heating device, comprising: a cartridge holder for accommodating a cartridge; a laser module arranged on the outside of the cartridge holder for generating linear laser light to heat the cartridge; a reflection module arranged on the light output path of the laser module for converging the linear laser light to the surface of the cartridge; a drive module arranged at the bottom of the cartridge holder for driving the cartridge to rotate in an interval manner; a control assembly electrically connected with the laser module and the drive module for controlling the output power of the laser module and the rotating action of the cartridge.

[0007] Preferably, the reflection module comprises at least one mirror group, and the mirror group is arranged around the outer periphery of the laser module; The mirror group comprises two small-angle mirrors arranged symmetrically on both sides of the light output direction of the laser module, and the inclination angle of the small-angle mirrors is 5-15° for shaping and converging the laser beam.

[0008] Preferably, the drive module includes a rotary motor and a transmission component, and the output end of the rotary motor is connected to the bottom of the cigarette holder through the transmission component; The rotary motor is a servo / stepper motor, and the control component can control the servo / stepper motor to drive the cigarette cartridge to rotate at fixed angular intervals.

[0009] Preferably, the control component includes a pressure sensor, and the control component can control the servo / stepper motor to operate when it senses a suction action.

[0010] Preferably, the servo / stepper motor rotates by 15-20° each time.

[0011] Preferably, the cigarette rack includes a cigarette holder and a cigarette base, and the cigarette base is connected to the output end of the servo / stepper motor through the transmission component; The smoke-holding tube is sleeved on the outer periphery of the smoke-holding seat. The smoke-holding tube is a hollow cylindrical structure, and the circumference of the smoke-holding tube is also provided with several grids that allow lasers to pass through.

[0012] Preferably, it also includes a plurality of cartridge fixing components, wherein the plurality of cartridge fixing components are fixedly disposed on one side of the transmission component; The cigarette holder is connected to the transmission component via the cigarette cartridge fixing member, and the cigarette cartridge fixing member extends through to the other side of the cigarette holder for connection with the cigarette cartridge.

[0013] Preferably, the laser module is a VCSEL line laser module, including a VCSEL laser chip and a ceramic substrate. The VCSEL laser chip and the small-angle reflector are jointly packaged on the ceramic substrate, and the number of VCSEL laser chips is not less than five.

[0014] Preferably, the control component further includes a temperature detector for real-time monitoring of the temperature of the heating area on the surface of the cigarette cartridge, and adjusting the output power of the laser module according to the detection result; When the temperature detector detects that the surface temperature of the cartridge is lower than a first set threshold, the output power of the laser module can be increased by controlling the increase of the number of Vcsel laser chips turned on and / or the output power of the laser module. When the temperature detector detects that the surface temperature of the cartridge is higher than the second set threshold, the output of the laser module can be reduced or turned off by reducing the number of Vcsel laser chips turned on and / or the output power of the laser module.

[0015] This application also provides a control method for a line laser heating device based on any one of the above, comprising: Start the laser module to emit line laser; The laser beam is focused onto the surface of the object being heated via a reflection module; The control component controls the drive module to drive the object to be heated to rotate at intervals, thereby achieving circumferential heating; The control component adjusts the output power of the laser module based on the real-time temperature of the cartridge surface.

[0016] The beneficial effects of this application are as follows: The linear laser heating device of this application uses a linear laser generated by a VCSEL linear laser module as a heat source. By opening corresponding grids at the cigarette holder, it achieves localized heating of the cigarette cartridge in the circumferential direction. The drive module drives the cigarette cartridge to rotate at intervals of 15°-20°, achieving uniform coverage of the cigarette cartridge in the circumferential direction. This ensures uniform heating of the cigarette cartridge in the circumferential direction, avoids scorching caused by local overheating, and improves product quality. Through the optimized design of the VCSEL linear laser module and the converging effect of the small-angle reflector, the utilization rate of laser energy is improved, and the power consumption of the whole machine can be controlled within 40W, reducing its overall power consumption and heat dissipation pressure. This lays the foundation for the miniaturization and lightweight design of the equipment.

[0017] Furthermore, by utilizing the instantaneous response characteristics of lasers, millisecond-level heating can be achieved, completely eliminating the 5-20 second preheating waiting time of traditional resistance or electromagnetic heating, allowing users to draw and use immediately, resulting in a better experience; In particular, by integrating a temperature detector and a pressure sensor, the control components can dynamically adjust the laser output power according to the real-time temperature, ensuring that the heating temperature is always stable within the optimal range. It can also trigger a rotation action when it senses the user's suction, realizing on-demand heating, further saving energy and ensuring safety in use. Furthermore, laser heating is a non-contact heating method, which avoids the physical wear and breakage problems of traditional heating elements and cartridges. At the same time, low power consumption and precise temperature control also reduce the workload of various components and effectively extend the service life of the whole machine. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the overall structure of the line laser heating device provided in the embodiments of this application; Figure 2 This is a cross-sectional view of the laser heating device in this application; Figure 3 This is a schematic diagram of the overall structure of the cigarette rack in this application. Figure 4 This is a schematic diagram showing the installation location of the reflective module in this application; Figure 5 A flowchart illustrating the control method for a line laser heating device provided in an embodiment of this application.

[0020] Figure label: 100. Outer shell; 200. Cigarette holder; 210. Suction port; 220. Cigarette tube; 221. Grille; 222. First locking slot; 230. Cigarette holder; 231. Locking seat; 232. Locking sleeve; 233. First wedge-shaped buckle; 234. Second wedge-shaped buckle; 235. Second locking slot; 300. Laser module; 310. VCSEL laser chip; 320. Ceramic substrate; 400. Small-angle reflector; 500. Drive module; 510. Rotary motor; 520. Transmission component; 600. Control component; 610. Temperature detector; 700. Cigarette cartridge holder; 800. Power distribution component. Detailed Implementation

[0021] 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.

[0022] The following is combined with Figures 1-4 This describes the line laser heating device provided in the embodiments of this application.

[0023] Reference Figure 1 and 2 As shown, the linear laser heating device provided in this application embodiment mainly includes a housing 100. Inside the housing 100, there is a smoke holder 200, a laser module 300, a reflection module, a drive module 500, and a control component 600. The housing 100 covers each component to provide support and protection. Its overall shape is that of a portable smoking device. One end of the smoke holder 200 protrudes from the outside of the housing to form a suction port 210 for the user to inhale. The drive module 500 is located at the bottom of the smoke holder 200, and the laser module 300 and the reflection module are located on the side of the smoke holder 200. A power distribution component 800 is also provided. The power distribution component 800 contains a battery and a circuit board for supplying power to the drive module 500 and the laser module 300.

[0024] By optimizing the VCSEL line laser module and the focusing effect of the small-angle reflector, the utilization rate of laser energy is improved, and the power consumption of the whole machine can be controlled within 40W, reducing its overall power consumption and heat dissipation pressure. This lays the foundation for the miniaturization and lightweight design of the equipment. Utilizing the instantaneous response characteristics of laser, millisecond-level heating can be achieved, completely eliminating the 5-20 second preheating waiting time of traditional resistance or electromagnetic heating. Users can use it immediately after extraction, resulting in a better experience.

[0025] Please continue reading. Figure 3 ,like Figure 3 As shown, it is a schematic diagram of the overall structure of the cigarette rack in this application; In some specific embodiments, the cigarette holder 200 includes a cigarette holder 220 and a cigarette holder 230. The cigarette holder 220 is a hollow cylindrical structure that is fitted around the outer periphery of the cigarette holder 230. The cigarette holder 220 and the cigarette holder 230 form a cigarette chamber for accommodating cigarette cartridges. The cigarette holder 220 is provided with a plurality of grids 221 around its periphery. The grids 221 allow lasers to pass through. Preferably, the cigarette holder 220 is made of stainless steel, and the occupancy ratio of the grids 221 is greater than or equal to 70% to ensure that the laser can fully pass through and heat the cigarette cartridges evenly.

[0026] In some specific embodiments, the drive module 500 includes a rotary motor 510 and a transmission component 520. The rotary motor 510 is a stepper motor or a servo motor, and its output end is connected to the smoke holder 230 through the transmission component 520. The transmission component 520 can be fixedly connected to the output end of the rotary motor 510 through a coupling.

[0027] The control component 600 can control the drive module 500 to perform two operation modes. One mode involves the rotary motor 510 simultaneously driving the tobacco cartridge to rotate while the linear laser heats it. The linear laser scans and heats the surface of the tobacco cartridge in real time. In this mode, the rotary motor can be a servo motor for smoother rotation. The other mode involves the stepper motor driving the tobacco cartridge to rotate rapidly at a certain angle when or after a puff is detected, thereby changing the heating area. When the control component 600 controls the stepper motor to drive the tobacco holder 230 to rotate at fixed angle intervals, the stepper motor rotates 15-20° each time, for example, 18°. After 20 rotations, 360° heating is completed, corresponding to 20 puff cycles, ensuring that the surface of the tobacco cartridge is heated evenly.

[0028] Specifically, the rotating mechanism includes a rotary motor 510, the output end of which is fixedly connected to a transmission component 520 via a coupling or other connecting structure. A support frame is also provided in the housing 100. The transmission component 520 is rotatably disposed in the support frame. The other end of the transmission component 520 passes through the support frame and is connected to the cigarette holder. A fixed disc is provided on one side of the transmission component 520 that passes through the support frame. Several locking teeth are provided on the fixed disc. The smoke holder 230 includes a snap-fit ​​base 231 and a snap-fit ​​sleeve 232. The bottom of the snap-fit ​​sleeve 232 has several snap-fit ​​grooves. The snap-fit ​​sleeve 232 is connected to the surface of the fixed disc by several snap-fit ​​teeth. The bottom of the snap-fit ​​sleeve 232 is provided with several snap-fit ​​blocks, and the bottom of the smoke holder has several corresponding snap-fit ​​grooves. At least two first wedge-shaped buckles 233 for snapping the smoke holder 220 are also provided on the outer side of the snap-fit ​​sleeve 232. The smoke holder 220 is provided with corresponding first locking grooves 222. The smoke holder 220 can be snapped onto the outer periphery of the snap-fit ​​sleeve 232 by the first wedge-shaped buckles 233 cooperating with the first locking grooves 222. The top outer side of the snap-fit ​​base 231 is also provided with a first... The second wedge-shaped buckle 234 has a wedge-shaped surface opposite to that of the first wedge-shaped buckle 233. The snap sleeve 232 is also provided with a second snap groove 235 at the position corresponding to the second wedge-shaped buckle 234. The snap seat 231 is snapped into the inside of the snap sleeve 232 through the second wedge-shaped buckle 234. At this time, the rotary motor 510 can drive the cigarette holder 230 and the cigarette tube 220 to rotate simultaneously through the transmission component 520. At this time, the drive module 500 needs to drive after sensing that the suction action has stopped. The side of the cigarette tube 220 near the suction port 210 is also engraved with a strip-shaped reference strip to help the user to check the current rotation angle so that he can replace the cigarette cartridge in time. On the other hand, the second wedge-shaped buckle 234 located on the outer side of the top of the snap-fit ​​seat 231 and the second snap-fit ​​groove 235 opened at the snap-fit ​​sleeve 232 can be removed to fix the cigarette holder 220 to the outer shell 100, and the snap-fit ​​block at the bottom of the snap-fit ​​sleeve 232 can be removed. At this time, the rotary motor 510 can drive the snap-fit ​​seat 231 in the cigarette holder 230 and the cigarette cartridge on it to rotate through the transmission component 520, while the cigarette holder 220 does not rotate. At this time, the drive module 500 can drive the cigarette cartridge to rotate at the same time as it senses the suction action.

[0029] Please continue reading. Figure 4 ,like Figure 4 As shown, this is a schematic diagram of the installation position of the reflection module in this application; In some specific embodiments, the laser module 300 is a VCSEL line laser module, including a VCSEL laser chip 310 and a ceramic substrate 320. The number of VCSEL laser chips 310 is not less than five to provide sufficient laser power. The VCSEL laser chips 310 and the small-angle reflector 400 of the reflection module are jointly packaged on the ceramic substrate 320 to achieve a compact design while focusing the laser and improving its utilization.

[0030] In some specific embodiments, the reflection module includes at least one set of reflectors surrounding the outer periphery of the laser module 300. Each set of reflectors includes two symmetrically arranged small-angle reflectors 400 with an inclination angle of 5°-15°, which are used to shape and converge the laser beam, so as to better focus the laser on the surface of the cartridge and improve the laser utilization rate.

[0031] In some specific embodiments, the control component 600 includes a pressure sensor and a temperature detector 610. The pressure sensor is used to detect the user's inhalation action. When inhalation is detected, the control component 600 activates the laser module 300 and the drive module 500. The temperature detector 610 monitors the temperature of the heating area on the surface of the tobacco cartridge in real time. The control component 600 can adjust the output power of the laser module 300 according to the temperature detection result. When the temperature is lower than a first set threshold, the number of laser chips turned on or the output power is increased. When the temperature is higher than a second set threshold, the laser output is reduced or turned off to prevent overheating. The first and second set thresholds can be selected according to the suitable heating temperature of the tobacco cartridge to be heated. For example, the suitable heating temperature of common HNB heated tobacco cartridges is generally 300-350℃. At this time, the first set threshold can be set to 300℃ and the second set threshold to 350℃.

[0032] By integrating a temperature detector 610 and a pressure sensor, the control components can achieve dual intelligent regulation. On the one hand, the integrated temperature detector 610 allows the device to dynamically adjust the laser output power according to the real-time temperature, ensuring that the heating temperature is always stable within the optimal range, such as 300-350℃ for HNB or 200-250℃ for atomized electronic cigarettes. On the other hand, the integrated pressure sensor can trigger rotational heating when it senses the user's inhalation, realizing on-demand heating, further saving energy and ensuring safe use.

[0033] It also includes several cartridge fixing parts 700, which are fixedly installed on one side of the transmission part 520. The cigarette holder 230 is connected to the transmission part 520 through the cartridge fixing parts 700. The cartridge fixing parts 700 pass through the cigarette holder 230 and extend to the other side of the locking seat 231 to lock the cartridge and ensure that the cartridge is placed stably.

[0034] Please continue reading. Figure 5 ,like Figure 5 The diagram shown is a flowchart of a control method for a line laser heating device provided in an embodiment of this application. Specifically, this application also provides a control method for a line laser heating device based on any one of the above, comprising: Step S1: Start the laser module to emit line laser; Step S2: Focus the laser onto the surface of the cigarette cartridge through the reflection module.

[0035] Step S3: Control the drive module to drive the object to be heated to rotate at intervals through the control component to achieve circumferential heating.

[0036] Step S4: The output power of the laser module is adjusted by the control component according to the real-time temperature of the cigarette cartridge surface.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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 line laser heating device, characterized in that, include: A cigarette holder for holding cigarette cartridges; A laser module, located on the outside of the cigarette holder, is used to generate a line laser to heat the cigarette cartridge; A reflective module is disposed on the light output path of the laser module to focus the line laser onto the surface of the cartridge; A drive module, located at the bottom of the cigarette holder, is used to drive the cigarette cartridge to rotate intermittently; A control component, electrically connected to the laser module and the drive module, is used to control the output power of the laser module and the rotation of the smoke cartridge.

2. The line laser heating device according to claim 1, characterized in that, The reflection module includes at least one set of reflectors, which surrounds the outer periphery of the laser module; The reflector group includes two small-angle reflectors symmetrically arranged on both sides of the laser module's light output direction. The tilt angle of the small-angle reflectors is 5-15°, which are used to shape and focus the laser beam.

3. The line laser heating device according to claim 2, characterized in that, The drive module includes a rotary motor and a transmission component, and the output end of the rotary motor is connected to the bottom of the cigarette holder through the transmission component. The rotary motor is a servo / stepper motor, and the control component can control the servo / stepper motor to drive the cigarette cartridge to rotate at fixed angular intervals.

4. The line laser heating device according to claim 3, characterized in that, The control component includes a pressure sensor, which can control the servo / stepper motor to operate when / after sensing a suction action.

5. The line laser heating device according to claim 4, characterized in that, The servo / stepper motor rotates 15-20° each time.

6. The line laser heating device according to claim 5, characterized in that, The cigarette rack includes a cigarette holder and a cigarette base, and the cigarette base is connected to the output end of the stepper motor through the transmission component; The smoke-holding tube is sleeved on the outer periphery of the smoke-holding seat. The smoke-holding tube is a hollow cylindrical structure, and the circumference of the smoke-holding tube is also provided with several grids that allow lasers to pass through.

7. The line laser heating device according to claim 6, characterized in that, It also includes several cartridge fixing components, which are fixedly disposed on one side of the transmission component; The cigarette holder is connected to the transmission component via the cigarette cartridge fixing member, and the cigarette cartridge fixing member extends through to the other side of the cigarette holder for connection with the cigarette cartridge.

8. The line laser heating device according to claim 7, characterized in that, The laser module is a Vcsel line laser module, which includes a Vcsel laser chip and a ceramic substrate. The Vcsel laser chip and the small-angle reflector are jointly packaged on the ceramic substrate, and the number of Vcsel laser chips is not less than five.

9. The line laser heating device according to claim 8, characterized in that, The control component also includes a temperature detector for real-time monitoring of the temperature of the heating area on the surface of the cigarette cartridge, and for adjusting the output power of the laser module based on the detection results; When the temperature detector detects that the surface temperature of the cartridge is lower than a first set threshold, the output power of the laser module can be increased by controlling the increase of the number of Vcsel laser chips turned on and / or the output power of the laser module. When the temperature detector detects that the surface temperature of the cartridge is higher than the second set threshold, the output of the laser module can be reduced or turned off by reducing the number of Vcsel laser chips turned on and / or the output power of the laser module.

10. A control method for a line laser heating device according to any one of claims 1-9, characterized in that, include: Start the laser module to emit line laser; The laser beam is focused onto the surface of the object being heated via a reflection module; The control component controls the drive module to drive the object to be heated to rotate at intervals, thereby achieving circumferential heating; The control component adjusts the output power of the laser module based on the real-time temperature of the cartridge surface.

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