WO2019214131A1 - 一种烤烟器 - Google Patents

一种烤烟器 Download PDF

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WO2019214131A1
WO2019214131A1 PCT/CN2018/106606 CN2018106606W WO2019214131A1 WO 2019214131 A1 WO2019214131 A1 WO 2019214131A1 CN 2018106606 W CN2018106606 W CN 2018106606W WO 2019214131 A1 WO2019214131 A1 WO 2019214131A1
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heating
circuit
heat
tobacco
current
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PCT/CN2018/106606
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English (en)
French (fr)
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卢集伟
王立国
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深圳市华远新材料有限公司
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Publication of WO2019214131A1 publication Critical patent/WO2019214131A1/zh

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    • A24F47/008—

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  • the present application relates to the field of electronic cigarette technology, and in particular to a cigarette smoker for an electronic cigarette.
  • the electronic cigarettes on the market mainly have two heating technologies: a heating rod type and a heating coil type.
  • the main structure of the heating rod type electronic cigarette includes a battery, an auxiliary circuit, a flue-cured tobacco, a heating rod and the like, and the heating principle is that the high-frequency current generates Joule heat through the electric resistance.
  • Philip Morris International's IQOS heating rod type electronic cigarette as an example.
  • the heating temperature can reach 300 degrees Celsius
  • the battery voltage is DC3.7V-DC5V, and it can be used for 5-6 minutes after charging for 10 minutes.
  • British American Tobacco's heating coil type electronic cigarette as an example, its structure mainly includes battery, auxiliary circuit, flue-cured tobacco, heating coil, etc.
  • the heating principle is that high-frequency current is induced and heated by heating coil, and its heating temperature It can also reach 300 degrees Celsius.
  • the heating rod type electronic cigarette needs to be cleaned frequently, time-consuming and labor-intensive, and the uneven heat and cold caused by the incorrect suction method during smoking may damage the heating rod.
  • the heating coil type electronic cigarette is complicated to process, high in production cost, and the maximum heating temperature is limited by the paper burning point. Avoiding the above defects of the electronic cigarette heating technology and satisfying the heating requirements has become an improvement trend of the current electronic cigarette heating technology.
  • the purpose of the present application is to provide a novel flue-curing device that avoids the defects of the existing heating technology while satisfying the heating effect of the electronic cigarette.
  • a flue-cured tobacco device comprising a casing and a battery disposed in the casing, a heating control module, a heating assembly, and a heating chamber for placing the tobacco body;
  • the heating control module is electrically Connecting the battery and the heating assembly to supply a heating current to the heating assembly;
  • the heating chamber is formed by enclosing the side wall and the bottom surface, and the bottom surface is provided with an opening for the cigarette body;
  • the heating assembly comprises a heating sheet and a heat collecting tube;
  • the heating piece is disposed on the bottom surface of the heating chamber;
  • the heat tracing tube is tubular and disposed on the inner surface of the side wall of the heating chamber.
  • the heating piece is fixed at one end to the bottom surface of the heating chamber, and one end extends into the heating chamber.
  • the direction of the heater chip is parallel to the axis of the heat trace.
  • the outer wall of the heat tracing tube is provided with a heat insulation layer.
  • the heating control module comprises an MCU and a PWM driving circuit, a high frequency inverter circuit and a heating circuit which are electrically connected in sequence; the heating circuit is electrically connected to the heating component; the MCU passes the PWM driving circuit and the high frequency inverter circuit Regulating the heating circuit to generate an AC heating current.
  • the heating control module further includes a pressure sensor, a temperature sensor, and a signal conditioning circuit disposed between the sensor and the MCU; the signal conditioning circuit is configured to convert an analog signal from the pressure sensor and the temperature sensor into an MCU. The digital signal is recognized; the MCU receives the temperature and pressure signals fed back by the signal conditioning circuit, and regulates the heating current according to the temperature and pressure signals.
  • the heating current is 1.5-2.0 A, 1-20 kHz.
  • the battery is a DC3.7V-DC5V lithium battery.
  • the flue-cured tobacco device of the present application is provided with a heating piece and a heating component matched with the heat-treating tube. Based on the skin effect, the heat of the heating piece is radiated radially outward by the heating piece along the flue-curing device, and the heat direction of the heat-treating tube is directed from the inner wall of the heat-treating tube to the axis of the electronic cigarette. Radiation greatly increases the efficiency of heating.
  • the technical solution of the present application makes the flue-cured tobacco device meet the requirements of the current market for the heating temperature and heating efficiency of the flue-curing device, and avoids the disadvantages of the complicated process and high cost of the existing flue-curing device.
  • FIG. 1 is a schematic view showing the heating principle of a tobacco cooker in a specific embodiment of the present application
  • FIG. 2 is a schematic diagram of a heating control module of a flue-curing device in a specific embodiment of the present application
  • Figure 3 is a diagram showing the heating effect of the tobacco cooker in the specific embodiment of the present application.
  • the flue-cured tobacco device of the present scheme is used for heating the electronic cigarette, and the rechargeable DC3.7V-DC5V lithium battery is installed in the outer casing of the flue-cured tobacco device, and the user can pass the charging treasure. Wait for the battery to charge.
  • the cigarette lighter can be used for 6 minutes after charging for 10 minutes, which meets the time requirement of normally smoking one cigarette.
  • the flue-cured tobacco device is further provided with a heating control module and a heating chamber and a heating assembly installed in the heating chamber. The size of the heating chamber is matched with the size of the electronic cigarette, and has an opening disposed on the casing.
  • the heating assembly is composed of a heating sheet and a heat-treating tube.
  • the heating sheet is a sheet-shaped body. One end is mounted on the bottom surface of the heating chamber, and one end extends into the heating chamber.
  • the heating tube is tubular and is mounted on the inner surface of the heating chamber side wall. The direction of the heating sheet is parallel to the axis of the heat tracing tube, which is beneficial to the realization of the skin effect.
  • the heating control module electrically connects the battery and the heating assembly, and its main function is to convert the DC current supplied by the battery into a suitable AC current to be supplied to the heating assembly.
  • the heating control module includes an electrically connected pressure sensor, a temperature sensor, a signal conditioning circuit, an MCU, a PWM driving circuit, a high frequency inverter circuit, and a skin effect heating circuit, and the skin effect circuit electrically connects the heating assembly.
  • the signal conditioning circuit converts the analog signal from the pressure sensor and the temperature sensor into a digital signal recognizable by the MCU, and the MCU controls the heating temperature of the electronic cigarette according to the temperature signal, and controls the heating efficiency of the electronic cigarette according to the pressure signal.
  • the PWM drive circuit realizes the control of the analog circuit by the MCU output signal by changing the pulse width; the high frequency inverter circuit inverts the low voltage direct current into the high frequency low voltage alternating current.
  • the MCU controls the heating circuit to generate an AC heating current according to the temperature and pressure signals through a PWM driving circuit and a high frequency inverter circuit.
  • the heating current is 1.5-2.0A, 1-20 kHz, and the heat generated by the heating sheet and the heating tube is controlled to reach 100 ° C - 300 ° C within 20 s, which satisfies the user's demand for the use of the tobacco hood.
  • the casing of the present invention has an approximately tubular shape, and has a battery, a heating control module and a heating chamber as described above in the lower order, and the opening of the heating chamber is opened at the top of the flue-cured casing.
  • the heating piece is disposed at the bottom of the heating chamber, and the heating tube is installed on the inner wall of the heating chamber.
  • the electronic cigarette is inserted into the heating chamber from the opening of the heating chamber.
  • An insulation layer is arranged outside the heat tracing tube to reduce the heat generated by the heating sheet and the heating tube from being radiated to the outer wall of the flue-curing device, thereby effectively reducing the loss of heat and preventing the user from being burnt at a high temperature.
  • the electronic cigarette when the tobacco smoker of the present invention is used in combination with the electronic cigarette, the electronic cigarette is inserted into the heating chamber of the flue-cured tobacco device, and the electronic cigarette is placed in the heating chamber except for the suction nozzle, and the front end abuts the heating piece.
  • the heating function of the flue-curing device is started, and the electronic cigarette is heated, and the heat generated by the heating sheet radiates outward in the radial direction of the electronic cigarette, which accounts for 1/4-1/3 of the total heat; the inner wall of the heat-treating tube generates a vortex heat source, and the heat direction is The inner wall of the heat tracing tube radiates toward the axis of the electronic cigarette, accounting for 2/3 - 3/4 of the total heating amount.
  • the Joule heat generated by the eddy current is proportional to the square of the frequency of the alternating current.
  • the purpose of high frequency heating is that the higher the frequency of the current of the same size by the heating sheet, the better the heating effect produced by the heating sheet.
  • the heating principle of the heat tracing tube is the eddy current effect. Specifically, when the heating piece passes into the sinusoidal alternating current, an alternating electromagnetic field is generated around the axis of the heating piece. At this time, the pipe is in a changing electromagnetic field, and the magnetic flux in the pipe changes. The induced electromotive force is generated to induce an electric current in the tube wall. This current is an eddy current. The current is exponentially distributed from the inner wall to the outer wall (the skin depth) along the normal direction of the tube wall, and the eddy current effect on the inner wall of the heating tube is The main heat source for electronic cigarette heating from the outside to the inside.
  • the correspondence between the core power supply voltage u, the supply voltage frequency f, the heating temperature T up , the pipe diameter D, the pipe thickness ⁇ and the pipe length l is as follows:
  • the alternating electric field and magnetic field are generated at the same time, and the electric field and the magnetic field have respective skin effect and proximity effect.
  • Both the electric field and the magnetic field are densely distributed on the inner surface of the heat tracing tube, and there is almost no electric field strength and magnetic induction intensity distribution on the outer surface of the heat tracing tube, which is represented by zero voltage and current on the outer surface of the outer wall of the heating chamber of the flue-cured tobacco.
  • the higher the current frequency of the heat-treating tube resistance wire the higher the current density generated by the electric field and the magnetic field on the inner surface of the pipe, and the better the heating effect. Therefore, the heating temperature of the toaster can be controlled by controlling the amplitude and frequency of the heating current.
  • the heating control module generates a heating current that controls the heating sheet and the heat tracing tube to generate heat.
  • the heating current is 1.5-2.0A, 1-20kHz, and the heat generated by the heating sheet and the heating tube reaches 100°C-300°C within 20s, which satisfies the time requirement of normally smoking one cigarette.
  • the test results of the heating test of the flue-cured tobacco can be seen that the heating temperature of about 50s reaches 100 ° C, which can meet the heating demand of the current electronic cigarette on the market; the heating temperature can reach 300 ° C in about 140s.
  • the heat of the heating sheet is radiated outward from the heating sheet in the radial direction of the electronic cigarette, and the heat direction of the heat-treating tube is radiated from the inner wall of the heating tube to the axial direction of the heating chamber, thereby greatly improving the heating efficiency.
  • the heating temperature of the flue-cured tobacco device of the present application can reach 300 degrees Celsius, and reaches the indexes of similar products at home and abroad to meet the user's use requirements.
  • the heating sheet is used in place of the heating rod, and the cleaning rod does not need to be cleaned frequently; and since the internal heating of the heating sheet is simultaneously performed with the heating of the inner wall of the heat tracing tube, the cold and heat caused by the incorrect suction method during smoking is avoided. All.
  • the present invention eliminates the heating coil outside the heat tracing tube, and the process is simple, and the design cost is reduced. At the same time, since the internal and external heating are simultaneously performed, the heating temperature is basically not limited by the burning point of the paper.

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  • Central Heating Systems (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

一种烤烟器，包括壳体和设置于壳体内的电池、加热控制模块、加热组件以及用于放置烟体的加热腔。加热控制模块电连接电池和加热组件，向加热组件提供加热电流。加热腔由侧壁和底面围合形成，对应底面设置有一供烟体进入的开口；加热组件包括加热片和伴热管，伴热管为管状、设置于加热腔侧壁内面，加热片设置于加热腔底面。该烤烟器基于集肤效应，加热片热量由加热片沿烤烟器径向向外辐射、伴热管热量方向由伴热管内壁向电子烟轴心方向辐射，大大提高了加热的效率。该烤烟器满足加热温度和加热效率的要求，同时避免了工艺复杂、成本高等缺点。

Description

一种烤烟器
本申请是以申请号为201810442001.X、申请日为2018年5月10日的中国专利申请为基础，并主张其优先权，该申请的全部内容在此作为整体引入本申请中。
技术领域
本申请涉及电子烟技术领域，尤其涉及一种电子烟的烤烟器。
背景技术
目前市面上的电子烟主要有加热棒式与加热线圈式两种加热技术。加热棒式电子烟的主要结构包括电池、辅助电路、烤烟器、加热棒等等，其加热原理是高频电流通过电阻产生焦耳热。以菲莫国际(Philip Morris International)的IQOS加热棒式电子烟为例，其加热温度可达300摄氏度，电池电压为DC3.7V-DC5V，充电10分钟即可使用5-6分钟。以英美烟草(British American Tobacco)的加热线圈式电子烟为例，其结构主要包括电池、辅助电路、烤烟器、加热线圈等等，其加热原理是高频电流通过加热线圈感应加热，其加热温度同样可达300摄氏度。然而加热棒式电子烟需要经常清洗、耗时耗力，并且吸烟时不正确的吸入方式所引起的冷热不均会对加热棒有伤害。而加热线圈式电子烟加工复杂、生产成本高，并且最高加热温度受盘纸燃点限制。避免上述电子烟加热技术的缺陷，同时又满足加热要求，成为当前电子烟加热技术的改进趋势。
申请内容
本申请的目的在于提供新型的烤烟器，在满足电子烟加热效果的同时避免现有加热技术的缺陷。
为了实现上述目的，本申请提供如下技术方案：一种烤烟器，包括壳体 和设置于壳体内的电池、加热控制模块、加热组件以及用于放置烟体的加热腔；所述加热控制模块电连接电池和加热组件，向加热组件提供加热电流；所述加热腔由侧壁和底面围合形成，对应底面设置有一供烟体放入的开口；所述加热组件包括加热片和伴热管；所述加热片设置于加热腔底面；所述伴热管为管状，设置于加热腔侧壁内面。
优选地，所述加热片一端固定于加热腔底面，一端向加热腔内延伸。
优选地，所述加热片的方向与伴热管的轴线平行。
优选地，所述伴热管外壁设置有隔热层。
优选地，所述加热控制模块包括依次电连接的MCU以及PWM驱动电路、高频逆变电路、加热电路；所述加热电路电连接加热组件；所述MCU通过PWM驱动电路、高频逆变电路调控加热电路的产生AC加热电流。
优选地，所述加热控制模块还包括压力传感器、温度传感器以及设置于传感器和MCU之间的信号调理电路；所述信号调理电路，用于将来自压力传感器、温度传感器的模拟信号转化为MCU可识别的数字信号；所述MCU接受信号调理电路反馈的温度、压力信号，根据温度、压力信号调控所述加热电流。
优选地，所述加热电流为1.5-2.0A，1-20kHz。
优选地，所述电池为DC3.7V-DC5V锂电池。
本申请的烤烟器设置加热片和伴热管配套的加热组件，基于集肤效应，加热片热量由加热片沿烤烟器径向向外辐射、伴热管热量方向由伴热管内壁向电子烟轴心方向辐射，大大提高了加热的效率。本申请的技术方案，使得烤烟器满足当前市场对烤烟器加热温度和加热效率的要求，同时避免了现有烤烟器工艺复杂、成本高等缺点。
附图说明
图1是本申请具体实施例中烤烟器加热原理示意图；
图2是本申请具体实施例中烤烟器加热控制模块示意图；
图3是本申请具体实施例中烤烟器加热效果图。
具体实施方式
为使技术人员更好地理解本申请，下面参照附图对本申请的实施例进行清楚、详细的说明，但不作为对本申请的限定。显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。本申请公开一种新型的烤烟器，基于集肤效应对电子烟进行加热，具体的技术方案见下文实施例。
实施例1
如图1、图2所示，在具体实施例中，本方案的烤烟器用于电子烟的加热，本烤烟器的外壳内安装有的可充电DC3.7V-DC5V锂电池，用户可通过充电宝等方式给该电池充电。本烤烟器充电10分钟可使用6分钟，满足正常吸1根烟的时间需求。烤烟器还设置有加热控制模块和加热腔以及安装于加热腔内的加热组件。加热腔大小与电子烟大小契合，有一设置在壳体上的开口，使用时电子烟放入加热腔后启动烤烟器的加热功能。加热组件由加热片和伴热管组成，加热片为片状体，一端安装加热腔底面、一端向加热腔内延伸；伴热管为管状，安装在加热腔侧壁内面。加热片的方向与伴热管的轴线平行，有利于集肤效应的实现。
加热控制模块，电连接电池和加热组件，其主要功能在于将电池提供的DC电流转换为合适的AC电流提供给加热组件。具体地，加热控制模块包括电连接的压力传感器、温度传感器、信号调理电路、MCU、PWM驱动电路、高频逆变电路以及集肤效应加热电路，集肤效应电路电连接加热组件。信号调理电路将来自压力传感器、温度传感的模拟信号转化为MCU可识别的数字信号，MCU依据温度信号控制电子烟的加热温度，依据压力信号控制电子烟的加热效率。PWM驱动电路，通过改变脉冲宽度的方式，实现MCU输出的信号对模拟电路的控制；高频逆变电路将低压直流电逆变为高频低压交流电。MCU根据温度、 压力信号，通过PWM驱动电路和高频逆变电路，控制加热电路产生AC加热电流。在具体实施例中，该加热电流为1.5-2.0A、1-20kHz，控制加热片与加热管发出的热量在20s内达到100℃-300℃，满足用户对烤烟器的使用需求。
实施例2
在具体实施例中，本申请烤烟器壳体为近似管状，其内有下至上依次设置有前文所述的电池、加热控制模块和加热腔，加热腔的开口开设于烤烟器壳体顶部。加热片设置在加热腔底部，伴热管安装于加热腔内壁，使用时，电子烟从加热腔开口插入加热腔中。伴热管外设置有隔热层，用于减少加热片与加热管发出的热量因辐射传导到烤烟器外壁，有效降低了热量的损耗、并且防止高温烫伤用户。
实施例3
在具体实施例中，本方案烤烟器配合电子烟使用时，电子烟插入烤烟器的加热腔内，电子烟除了吸嘴外全部放入加热腔内，其前端抵接加热片。启动烤烟器的加热功能，对电子烟进行加热，加热片产生的热量沿电子烟径向向外辐射，占总热量的1/4-1/3；伴热管的内壁产生涡流热源，热量方向由伴热管内壁向电子烟轴心方向辐射，占总加热量的2/3-3/4。具体地，加热片的工作原理如下：加热片的阻值控制在R≤1Ω以内，流过加热片的电流i产生的焦耳热可表示为Q＝i 2R。加热片通入正弦交变电流的频率越高，其周围交变电磁场的变化速度就越快，Q就越大；同时加热片产生的涡流电流就越大，则所产生的焦耳热越多。由涡流产生的焦耳热与交变电流的频率的平方成正比。高频加热的目的就在于，对于通过加热片同样大小的电流，其频率越高，在加热片产生的加热效果就越好。
伴热管的加热原理为涡流效应，具体地，当加热片通入正弦交变电流时，围绕加热片轴线就产生了交变电磁场，此时管道处于变化的电磁场中，管道内磁通量发生变化因而产生了感应电动势，从而在管壁中产生感应电流，这个电流就是涡流，此电流沿管壁法线方向由内壁向外壁(集肤深度)呈指数 分布，其在加热管内壁产生的涡流效应是为电子烟由外向内加热的主要热源。其最核心的供电电压u、供电电压频率f、加热温度T up、管道直径D、管道厚度δ及管道长度l的对应关系如下式所示：
Figure PCTCN2018106606-appb-000001
另外高频加热电流从伴热管电阻丝流过时，同时产生交变的电场与磁场，电场与磁场都具有各自的集肤效应与邻近效应。电场与磁场都在伴热管的内表面分布密集，而在伴热管外表面几乎没有电场强度与磁感应强度分布，表现为烤烟器加热腔外壁外表面电压、电流为零。伴热管电阻丝电流频率越高，电场与磁场在管道内表面产生的电流密度越大，加热效果越好，因此通过控制加热电流的幅值与频率可以控制烤烟器的加热温度。
实施例4
在具体实施例中，加热控制模块产生加热电流，控制加热片和伴热管产生热量。加热电流为1.5-2.0A、1-20kHz，加热片与加热管发出的热量在20s内达到100℃-300℃，满足正常吸1根烟的时间需求。如图3所示，烤烟器加热实验测试结果，可见在50s左右加热温度即达到了100℃，此温度即可满足目前市面上电子烟的加热需求；在140s左右加热温度可达到300℃。
本申请所公开的烤烟器，加热片热量由加热片沿电子烟径向向外辐射、伴热管热量方向由伴热管内壁向加热腔轴心方向辐射，大大提高了加热的效率。本申请烤烟器的加热温度可达300摄氏度，达到国内外同类产品的指标，满足用户的使用需求。相对于加热棒式电子烟，本申请用加热片代替加热棒，不需要经常清洁；并且由于加热片内部加热与伴热管内壁加热同时进行，避免了吸烟时不正确的吸入方式引起的冷热不均。相对于加热线圈式电子烟，本申请省去了伴热管外的加热线圈，工艺简单，降低了设计成本；同时由于内外加热同时进行，因此加热温度基本不受盘纸燃点的限制。
以上所述仅为本申请的优选实施例，并非因此限制本申请的专利范围， 凡是在本申请的申请构思下，利用本申请说明及附图内容所作的技术延伸或再创造均包括在本申请的专利保护范围内。

Claims (8)

  1. 一种烤烟器，其特征在于，包括壳体和设置于壳体内的电池、加热控制模块、加热组件以及用于放置烟体的加热腔；
    所述加热控制模块电连接电池和加热组件，向加热组件提供加热电流；
    所述加热腔由侧壁和底面围合形成，对应底面设置有一供烟体放入的开口；所述加热组件包括加热片和伴热管；所述加热片设置于加热腔底面；所述伴热管为管状，设置于加热腔侧壁内面。
  2. 根据权利要求1所述烤烟器，其特征在于，所述加热片一端固定于加热腔底面，一端向加热腔内延伸。
  3. 根据权利要求2所述烤烟器，其特征在于，所述加热片的方向与伴热管的轴线平行。
  4. 根据权利要求3所述烤烟器，其特征在于，所述伴热管外壁设置有隔热层。
  5. 根据权利要求1所述烤烟器，其特征在于，所述加热控制模块包括依次电连接的MCU以及PWM驱动电路、高频逆变电路、加热电路；所述加热电路电连接加热组件；所述MCU通过PWM驱动电路、高频逆变电路调控加热电路的产生AC加热电流。
  6. 根据权利要求5所述烤烟器，其特征在于，所述加热控制模块还包括压力传感器、温度传感器以及设置于传感器和MCU之间的信号调理电路；所述信号调理电路，用于将来自压力传感器、温度传感器的模拟信号转化为MCU可识别的数字信号；所述MCU接受信号调理电路反馈的温度、压力信号，根据温度、压力信号调控所述加热电流。
  7. 根据权利要求5所述烤烟器，其特征在于，所述加热电流为1.5-2.0A，1-20kHz。
  8. 根据权利要求1所述烤烟器，其特征在于，所述电池为DC3.7V-DC5V 锂电池。
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