CN108402527B - Tobacco flue-curing device - Google Patents
Tobacco flue-curing device Download PDFInfo
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- CN108402527B CN108402527B CN201810442001.XA CN201810442001A CN108402527B CN 108402527 B CN108402527 B CN 108402527B CN 201810442001 A CN201810442001 A CN 201810442001A CN 108402527 B CN108402527 B CN 108402527B
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Abstract
The invention discloses a tobacco curing device, which relates to the technical field of electronic cigarettes and comprises a shell, a battery, a heating control module, a heating assembly and a heating cavity, wherein the battery, the heating control module, the heating assembly and the heating cavity are arranged in the shell. The heating control module is electrically connected with the battery and the heating assembly and provides heating current for the heating assembly. The heating cavity is formed by enclosing a side wall and a bottom surface, and an opening for allowing the smoke body to enter is arranged corresponding to the bottom surface; the heating assembly comprises a heating sheet and a heat tracing pipe, the heat tracing pipe is tubular and is arranged on the inner surface of the side wall of the heating cavity, and the heating sheet is arranged on the bottom surface of the heating cavity. The tobacco curing device is based on the skin effect, the heat of the heating sheet is radiated outwards from the heating sheet along the radial direction of the tobacco curing device, and the heat of the heat tracing pipe is radiated from the inner wall of the heat tracing pipe to the axis direction of the electronic cigarette, so that the heating efficiency is greatly improved. According to the technical scheme, the tobacco curing device meets the requirements of the current market on the heating temperature and the heating efficiency of the tobacco curing device, and meanwhile, the defects of complex process, high cost and the like of the existing tobacco curing device are overcome.
Description
Technical Field
The invention relates to the technical field of electronic cigarettes, in particular to a tobacco curing device of an electronic cigarette.
Background
At present, electronic cigarettes on the market mainly have two heating technologies, namely a heating rod type heating technology and a heating coil type heating technology. The heating rod type electronic cigarette mainly comprises a battery, an auxiliary circuit, a cigarette roaster, a heating rod and the like, and the heating principle is that high-frequency current generates joule heat through a resistor. Taking an IQOS heating rod type electronic cigarette in philips Morris International as an example, the heating temperature can reach 300 ℃, the battery voltage is DC3.7V-DC5V, and the electronic cigarette can be used for 5-6 minutes after being charged for 10 minutes. Taking a heating coil type electronic cigarette of British American Tobacco (British American Tobacco) as an example, the structure of the electronic cigarette mainly comprises a battery, an auxiliary circuit, a Tobacco baking device, a heating coil and the like, the heating principle is that high-frequency current is heated by induction heating of the heating coil, and the heating temperature can reach 300 ℃. However, the heating rod type electronic cigarette needs to be cleaned frequently, is time-consuming and labor-consuming, and is damaged due to uneven heating and cooling caused by incorrect smoking. The heating coil type electronic cigarette is complex to process and high in production cost, and the maximum heating temperature is limited by the burning point of the coil paper. The defects of the electronic cigarette heating technology are avoided, the heating requirement is met, and the electronic cigarette heating technology is an improvement trend of the current electronic cigarette heating technology.
Disclosure of Invention
The invention aims to provide a novel tobacco curing device, which can meet the heating effect of an electronic cigarette and avoid the defects of the prior heating technology. In order to achieve the above purpose, the invention provides the following technical scheme: a tobacco flue-curing device comprises a shell, a battery, a heating control module, a heating assembly and a heating cavity, wherein the battery, the heating control module, the heating assembly and the heating cavity are arranged in the shell; the heating control module is electrically connected with the battery and the heating assembly and provides heating current for the heating assembly; the heating cavity is formed by enclosing a side wall and a bottom surface, and an opening for putting the tobacco body is arranged corresponding to the bottom surface; the heating assembly comprises a heating sheet and a heat tracing pipe; the heating sheet is arranged on the bottom surface of the heating cavity; the heat tracing pipe is tubular and is arranged on the inner surface of the side wall of the heating cavity.
Preferably, one end of the heating sheet is fixed on the bottom surface of the heating cavity, and the other end of the heating sheet extends into the heating cavity.
Preferably, the direction of the heating sheet is parallel to the axis of the heat trace pipe.
Preferably, the outer wall of the heat trace pipe is provided with a heat insulation layer.
Preferably, the heating control module comprises an MCU, 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 with the heating component; and the MCU regulates and controls the generated AC heating current of the heating circuit through the PWM driving circuit and the high-frequency inverter circuit.
Preferably, the heating control module further comprises a pressure sensor, a temperature sensor and a signal conditioning circuit arranged between the sensor and the MCU; the signal conditioning circuit is used for converting analog signals from the pressure sensor and the temperature sensor into digital signals which can be identified by the MCU; and the MCU receives the temperature and pressure signals fed back by the signal conditioning circuit and regulates and controls the heating current according to the temperature and pressure signals.
Preferably, the heating current is 1.5-2.0A, 1-20 kHz.
Preferably, the battery is an DC3.7V-DC5V lithium battery.
The heating sheet and the heating component matched with the heat tracing pipe are arranged on the tobacco curing device, and based on the skin effect, the heat of the heating sheet is radiated outwards from the heating sheet along the radial direction of the tobacco curing device, and the heat of the heat tracing pipe is radiated from the inner wall of the heat tracing pipe to the axis direction of the electronic cigarette, so that the heating efficiency is greatly improved. According to the technical scheme, the tobacco curing device meets the requirements of the current market on the heating temperature and the heating efficiency of the tobacco curing device, and meanwhile, the defects of complex process, high cost and the like of the existing tobacco curing device are overcome.
Drawings
FIG. 1 is a schematic diagram of the heating principle of a tobacco flue-curing device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a tobacco flue-curing oven heating control module according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating the heating effect of the tobacco flue-curing device in the embodiment of the present invention.
Detailed Description
In order to make the technical staff understand the invention better, the following embodiment of the invention is explained in detail with reference to the attached drawings, but the invention is not limited. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The invention discloses a novel tobacco flue-curing device which heats an electronic cigarette based on a skin effect.
Example 1
In a specific embodiment, as shown in fig. 1 and fig. 2, the cigarette roaster of the present invention is used for heating an electronic cigarette, and a rechargeable DC3.7V-DC5V lithium battery is installed in a housing of the cigarette roaster, and a user can charge the battery by means of a charger or the like. The tobacco flue-curing device can be used for 6 minutes after being charged for 10 minutes, and the time requirement of normally smoking 1 cigarette is met. The tobacco flue-curing device is also provided with a heating control module, a heating cavity and a heating component arranged in the heating cavity. The size of the heating cavity is matched with the size of the electronic cigarette, an opening is formed in the shell, and the electronic cigarette is placed in the heating cavity and then the heating function of the tobacco curing device is started during use. The heating assembly consists of a heating sheet and a heat tracing pipe, the heating sheet is a sheet-shaped body, one end of the heating sheet is arranged on the bottom surface of the heating cavity, and the other end of the heating sheet extends into the heating cavity; the heat tracing pipe is tubular and is arranged on the inner surface of the side wall of the heating cavity. The direction of the heating sheet is parallel to the axis of the heat tracing pipe, which is beneficial to realizing the skin effect.
And the heating control module is electrically connected with the battery and the heating assembly, and the main function of the heating control module is to convert DC current provided by the battery into proper AC current to be provided for the heating assembly. Specifically, the heating control module comprises a 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 which are electrically connected, and the skin effect heating circuit is electrically connected with the heating component. The signal conditioning circuit converts analog signals from the pressure sensor and the temperature sensor into digital signals which can be identified by the MCU, the MCU controls the heating temperature of the electronic cigarette according to the temperature signals, and controls the heating efficiency of the electronic cigarette according to the pressure signals. The PWM driving circuit realizes the control of the signal output by the MCU on the analog circuit by changing the pulse width; the high-frequency inverter circuit inverts the low-voltage direct current into high-frequency low-voltage alternating current. The MCU controls the heating circuit to generate AC heating current through the PWM driving circuit and the high-frequency inverter circuit according to temperature and pressure signals. In the specific embodiment, the heating current is 1.5-2.0A and 1-20kHz, and the heat emitted by the heating sheet and the heating pipe is controlled to reach 100-300 ℃ within 20s, so that the use requirement of a user on the tobacco flue-curing device is met.
Example 2
In a specific embodiment, the housing of the present invention is approximately tubular, and the battery, the heating control module and the heating cavity are sequentially disposed from bottom to top in the housing, and the opening of the heating cavity is opened at the top of the housing of the present invention. The heating plate sets up in heating chamber bottom, and the heat tracing pipe is installed in heating intracavity wall, and during the use, the electron cigarette inserts in the heating chamber from the heating chamber opening. The heat tracing pipe is externally provided with a heat insulation layer for reducing the heat transmitted by the heating sheet and the heating pipe to the outer wall of the tobacco curing device due to radiation, effectively reducing the heat loss and preventing a user from being scalded by high temperature.
Example 3
In a specific embodiment, the present scheme is bakingWhen the cigarette ware cooperation electron cigarette was used, the electron cigarette inserted the heating intracavity of tobacco flue-curing device, and the heating intracavity is all put into except that the suction nozzle to the electron cigarette, and its front end butt heating plate. Starting the heating function of the tobacco curing device to heat the electronic cigarette, wherein the heat generated by the heating sheet is radiated outwards along the radial direction of the electronic cigarette and accounts for 1/4-1/3 of the total heat; the inner wall of the heat tracing pipe generates a vortex heat source, and the heat direction is radiated from the inner wall of the heat tracing pipe to the axis direction of the electronic cigarette, which accounts for 2/3-3/4 of the total heating quantity. Specifically, the working principle of the heating sheet is as follows: the resistance value of the heating plate is controlled within R ≤ 1 Ω, and joule heat generated by current i flowing through the heating plate can be represented as Q ═ i2And R is shown in the specification. The higher the frequency of the sine alternating current introduced into the heating sheet is, the faster the change speed of the alternating electromagnetic field around the heating sheet is, and the larger Q is; meanwhile, the larger the eddy current generated by the heating plate, the more joule heat is generated. Joule heat generated by eddy currents is proportional to the square of the frequency of the alternating current. The high-frequency heating is intended to provide a heating effect to the heating sheet as high as possible with respect to the same magnitude of current passing through the heating sheet as high as the frequency of the current.
The heating principle of the heat tracing pipe is an eddy current effect, specifically, when a sine alternating current is introduced into a heating sheet, an alternating electromagnetic field is generated around the axis of the heating sheet, at the moment, a pipeline is in a changing electromagnetic field, the magnetic flux in the pipeline changes, so that induced electromotive force is generated, induced current is generated in the pipe wall, the current is eddy current, the current is exponentially distributed from the inner wall to the outer wall (skin depth) along the normal direction of the pipe wall, and the eddy current effect generated on the inner wall of the heating pipe is a main heat source for heating electronic cigarettes from outside to inside. The most core of the system is power supply voltage u, power supply voltage frequency f and heating temperature TupThe corresponding relationship among the diameter D of the pipeline, the thickness delta of the pipeline and the length l of the pipeline is shown as the following formula:
in addition, when the high-frequency heating current flows through the heat tracing pipe resistance wire, an alternating electric field and a magnetic field are generated simultaneously, and both the electric field and the magnetic field have respective skin effect and proximity effect. The electric field and the magnetic field are densely distributed on the inner surface of the heat tracing pipe, and the electric field intensity and the magnetic induction intensity are hardly distributed on the outer surface of the heat tracing pipe, which shows that the voltage and the current on the outer surface of the heating cavity outer wall of the tobacco roaster are zero. The higher the current frequency of the resistance wire of the heat tracing pipe is, the higher the current density generated by the electric field and the magnetic field on the inner surface of the pipeline is, and the better the heating effect is, so that the heating temperature of the tobacco curing device can be controlled by controlling the amplitude and the frequency of the heating current.
Example 4
In a specific embodiment, the heating control module generates heating current to control the heating sheet and the heat tracing pipe to generate heat. The heating current is 1.5-2.0A and 1-20kHz, the heat generated by the heating sheet and the heating pipe reaches 100-300 ℃ within 20s, and the time requirement of normally smoking 1 cigarette is met. As shown in fig. 3, the heating experiment test result of the tobacco flue-curing device shows that the heating temperature reaches 100 ℃ in about 50s, and the heating temperature can meet the heating requirement of the electronic cigarette on the market at present; the heating temperature can reach 300 ℃ in about 140 s.
According to the tobacco curing device disclosed by the invention, the heat of the heating sheet is radiated outwards from the heating sheet along the radial direction of the electronic cigarette, and the heat of the heat tracing pipe is radiated from the inner wall of the heat tracing pipe to the axis direction of the heating cavity, so that the heating efficiency is greatly improved. The heating temperature of the tobacco flue-curing device can reach 300 ℃, thereby reaching the indexes of similar products at home and abroad and meeting the use requirements of users. Compared with a heating rod type electronic cigarette, the heating rod is replaced by the heating sheet, and frequent cleaning is not needed; and because the heating inside the heating sheet and the heating of the inner wall of the heat tracing pipe are carried out simultaneously, the uneven cold and heat caused by incorrect suction mode during smoking is avoided. Compared with a heating coil type electronic cigarette, the invention omits a heating coil outside the heat tracing pipe, has simple process and reduces the design cost; meanwhile, because the internal heating and the external heating are simultaneously carried out, the heating temperature is basically not limited by the ignition point of the coil paper.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all technical extensions or innovations made by using the contents of the present specification and drawings are included in the scope of the present invention.
Claims (5)
1. A tobacco flue-curing device is characterized by comprising a shell, a battery, a heating control module, a heating assembly and a heating cavity, wherein the battery, the heating control module, the heating assembly and the heating cavity are arranged in the shell;
the heating control module is electrically connected with the battery and the heating assembly and provides heating current for the heating assembly;
the heating cavity is formed by enclosing a side wall and a bottom surface, and an opening for putting the tobacco body is arranged corresponding to the bottom surface; the heating assembly comprises a heating sheet and a heat tracing pipe; the heating sheet is arranged on the bottom surface of the heating cavity; the heat tracing pipe is tubular and is arranged on the inner surface of the side wall of the heating cavity; one end of the heating sheet is fixed on the bottom surface of the heating cavity, and the other end of the heating sheet extends into the heating cavity; the direction of the heating sheet is parallel to the axis of the heat tracing pipe;
the heating control module comprises an MCU, a PWM (pulse-width modulation) driving circuit, a high-frequency inverter circuit and a heating circuit which are sequentially and electrically connected; the MCU regulates and controls the heating circuit to generate AC heating current through the PWM driving circuit and the high-frequency inverter circuit; the heating circuit is electrically connected with the heating sheet, and the heating sheet which is introduced with AC heating current enables the pipe wall of the heat tracing pipe to generate induced current for heating the inner wall of the heat tracing pipe.
2. The tobacco flue-curing machine of claim 1, wherein the outer wall of the heat tracing pipe is provided with a heat insulation layer.
3. The smoker according to claim 2, wherein the heating control module further comprises a pressure sensor, a temperature sensor and a signal conditioning circuit disposed between the sensor and the MCU; the signal conditioning circuit is used for converting analog signals from the pressure sensor and the temperature sensor into digital signals which can be identified by the MCU; and the MCU receives the temperature and pressure signals fed back by the signal conditioning circuit and regulates and controls the heating current according to the temperature and pressure signals.
4. The smoke generator as claimed in claim 2, wherein said heating current is 1.5-2.0A, 1-20 kHz.
5. The smoker box according to claim 1, wherein said battery is DC3.7V-DC5V lithium battery.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810442001.XA CN108402527B (en) | 2018-05-10 | 2018-05-10 | Tobacco flue-curing device |
| PCT/CN2018/106606 WO2019214131A1 (en) | 2018-05-10 | 2018-09-20 | Cigarette roaster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810442001.XA CN108402527B (en) | 2018-05-10 | 2018-05-10 | Tobacco flue-curing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108402527A CN108402527A (en) | 2018-08-17 |
| CN108402527B true CN108402527B (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810442001.XA Active CN108402527B (en) | 2018-05-10 | 2018-05-10 | Tobacco flue-curing device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108402527B (en) |
| WO (1) | WO2019214131A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108402527B (en) * | 2018-05-10 | 2020-05-05 | 深圳市华远新材料有限公司 | Tobacco flue-curing device |
| CN109588780A (en) * | 2018-09-30 | 2019-04-09 | 广西中烟工业有限责任公司 | A kind of electromagnetic induction heater using lithium battery power supply |
| KR102350596B1 (en) * | 2020-01-16 | 2022-01-14 | 주식회사 케이티앤지 | Aerosol generating device |
| CN111418907A (en) * | 2020-03-31 | 2020-07-17 | 台湾立讯精密有限公司 | Gas mist generating device and method for controlling gas mist generating device |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150122278A1 (en) * | 2013-11-07 | 2015-05-07 | Victory Electronic Cigarettes, Inc. | Eco micro-electric thermal device |
| CN204969474U (en) * | 2015-08-18 | 2016-01-20 | 河南中烟工业有限责任公司 | Novel cigarette heating device of electromagnetic heating type heating incombustible |
| US20170055584A1 (en) * | 2015-08-31 | 2017-03-02 | British American Tobacco (Investments) Limited | Article for use with apparatus for heating smokable material |
| US20170055580A1 (en) * | 2015-08-31 | 2017-03-02 | British American Tobacco (Investments) Limited | Apparatus for heating smokable material |
| US20170055582A1 (en) * | 2015-08-31 | 2017-03-02 | British American Tobacco (Investments) Limited | Article for use with apparatus for heating smokable material |
| WO2017058922A1 (en) * | 2015-09-28 | 2017-04-06 | Lubby Holdings Llc | Vaporizer and detachable power source |
| CN206227716U (en) * | 2016-09-14 | 2017-06-09 | 深圳市合元科技有限公司 | The atomizer and electronic cigarette of electronic cigarette |
| CN206808660U (en) * | 2016-10-31 | 2017-12-29 | 深圳市合元科技有限公司 | Electronic cigarette |
| CN207040896U (en) * | 2017-06-29 | 2018-02-27 | 深圳市合元科技有限公司 | Dual heating type electronic smoking set and heater element |
| CN108402527B (en) * | 2018-05-10 | 2020-05-05 | 深圳市华远新材料有限公司 | Tobacco flue-curing device |
| CN208354596U (en) * | 2018-05-10 | 2019-01-11 | 深圳市华远新材料有限公司 | A kind of device for flue-cured tobacco |
-
2018
- 2018-05-10 CN CN201810442001.XA patent/CN108402527B/en active Active
- 2018-09-20 WO PCT/CN2018/106606 patent/WO2019214131A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| CN108402527A (en) | 2018-08-17 |
| WO2019214131A1 (en) | 2019-11-14 |
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