CN106942791A - Electrical smoking device and its temprature control method - Google Patents
Electrical smoking device and its temprature control method Download PDFInfo
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- CN106942791A CN106942791A CN201710177538.3A CN201710177538A CN106942791A CN 106942791 A CN106942791 A CN 106942791A CN 201710177538 A CN201710177538 A CN 201710177538A CN 106942791 A CN106942791 A CN 106942791A
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- 230000000391 smoking effect Effects 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 186
- 238000001514 detection method Methods 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 238000005070 sampling Methods 0.000 claims description 23
- 230000005611 electricity Effects 0.000 claims description 18
- 235000019504 cigarettes Nutrition 0.000 claims description 13
- 238000013461 design Methods 0.000 claims description 10
- 238000004832 voltammetry Methods 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 6
- 230000000052 comparative effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000003670 easy-to-clean Effects 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- 241000208125 Nicotiana Species 0.000 description 4
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000003571 electronic cigarette Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229960002715 nicotine Drugs 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- A24F47/008—
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- Control Of Resistance Heating (AREA)
Abstract
The present invention relates to a kind of electrical smoking device and temprature control method, wherein, the METAL HEATING PROCESS piece that electrical smoking device includes the holding end of hollow form and is connected with described holding end one end, control device is provided with the cavity of the holding end, the control device adjusts the temperature of the heating plate by gathering the real time resistance value of the heating plate；Battery is additionally provided with the cavity of the holding end, and the control device includes power drive unit, AD conversion unit, control unit and real time resistance detection unit；The real time resistance detection unit is used for the real time resistance for detecting the heating plate, and described control unit adjusts the power output of the power drive unit according to the real time resistance value of heating plate；There is accurate, easy to clean, the easy to use advantage of temperature control using the electrical smoking device of said structure.
Description
Technical field
The present invention relates to cigarette heating, incombustible electrical smoking utensil, more particularly to one kind can keep temperature constant state
Use METAL HEATING PROCESS piece electrical smoking device and its temprature control method.
Background technology
Although Smoking is harmful to your health as you know, at present, global smoker's quantity also accounts for total number of people
As many as 1/5th of amount.Because people have formd a kind of custom to smoking, and it is mutually corresponding, it is difficult to give up.
For such case, a kind of smoking apparatus of electric heating type, electrical smoking utensil is born, and this electrical smoking utensil is to pass through
The mode heated without burning tobacco provides the consumer with nicotine and tobacco characteristic perfume, meets the smoking demand of smoker, together
When the burst size of tar and harmful substance in main flume can be greatly lowered again.Using this electrical smoking utensil between smoking
Off period cigarette core is in not heated condition, thus does not have flow measurement flue gas substantially, greatly reduces the harm of second-hand-cigarette, is following tobacco
The main trend of market development.
The heating plate of current electrical smoking utensil is typically all to use ceramic making, and trip temperature is entered by temperature sensor
Detection, so as to realize temperature control.But in electrical smoking utensil, the temperature and potsherd that temperature sensor is detected are in itself
Temperature have certain error, because temperature adjustment is not accurate enough, influence consumer mouthfeel.Secondly, ceramic heating flake hardness
It is not big enough, it has not been convenient to clean tobacco leaf unnecessary on heating plate.
Therefore, market needs one kind badly and can accurately carry out temperature control and keep constant temperature, and the easy cleaned electricity of heating plate
Sub- smoking apparatus, to make up the deficiency of above mentioned problem.
The content of the invention
It is an object of the invention to provide a kind of achievable precise control of temperature, the working condition of constant temperature, Er Qieyi are maintained at
The electrical smoking device of the use METAL HEATING PROCESS piece of cleaning.
It is a further object of the present invention to provide a kind of electrical smoking of use METAL HEATING PROCESS piece for accurately controlling temperature dress
The temprature control method put.
To achieve these goals, the invention discloses a kind of electrical smoking device, including hollow form holding end and with
The METAL HEATING PROCESS piece of holding end one end connection, is provided with control device, the control device in the cavity of the holding end
The temperature of the heating plate is adjusted by gathering the real time resistance value of the heating plate.
Compared with prior art, electrical smoking device disclosed by the invention uses the heating plate that metal material makes, due to
The resistivity of metal material has good linear ratio relation with temperature, therefore by detecting the resistance value of METAL HEATING PROCESS piece just
The actual temperature of heating plate, rather than the environment temperature around the heating plate measured by temperature sensor in the prior art can be obtained
Degree.It is accurate with temperature after the actual temperature for obtaining heating plate, so that it may realize and carry out precise control to the operating temperature of heating plate
Really, the high advantage of the stability and reliability of product is (different so as to carry out accurate adjustment according to the different mouthfeels of consumer
The different mouthfeels of temperature correspondence).Secondly as the heat conductivility of metal is better than ceramics more, so the use of the present invention
The electrical smoking device of METAL HEATING PROCESS piece from start reach needed for temperature stand-by period it is very short, can control 5s with
It is interior.Moreover, do heating plate using metal material, with simple in construction, easy to make, hardness is strong, environmentally-friendly sanitary, cost etc. is saved
Feature.
It is preferred that battery is additionally provided with the cavity of the holding end, and the control device includes power drive unit, mould
Number converting unit, control unit and real time resistance detection unit.
The power drive unit is electrically connected with the battery and the heating plate respectively, described control unit respectively with
The power drive unit and the real time resistance detection unit are electrically connected with, and the AD conversion unit is used for described real-time
The analog signal that resistance detection unit is exported is converted into digital data transmission to described control unit.
The real time resistance detection unit is used for the real time resistance for detecting the heating plate, and described control unit is according to heating
The real time resistance value of piece adjusts the power output of the power drive unit.
The energy of battery is converted into heating plate institute by the power drive unit as needed under the control of the control unit
The energy needed, realizes accurate temperature controlling, and protect METAL HEATING PROCESS piece not to be burned out.
Driven it is preferred that described control unit adjusts the power by exporting the pulse width modulation wave of different duty
The power output of moving cell.Control unit is modulated using PWM ripples to power drive unit, and harmonic wave is small, dynamic response is fast, electricity
Active power factor is high, relatively easy control circuit, low cost and strong to the resistivity of noise.
It is preferred that the real time resistance detection unit detects the real time resistance of heating plate using voltage comparison method.
It is preferred that the first voltage comparison circuit and second voltage that the real time resistance detection unit includes series connection are more electric
Road, the first voltage comparison circuit is used to detect heating plate voltage, and the second voltage comparison circuit is used to produce one and institute
State the comparison voltage that heating plate voltage is compared.
It is preferred that the first voltage comparison circuit includes the first divider resistance and the second divider resistance being in series, institute
State the first divider resistance and second divider resistance is connected in series latter end ground connection, the positive pole of the other end and the heating plate connects
Connect, the heating plate voltage is exported from the connection junction of first divider resistance and the second divider resistance, is turned via modulus
Change unit and be output to control unit.
It is preferred that the second voltage comparison circuit includes the first sampling resistor, the first current-limiting resistance and the second current limliting electricity
Resistance；First sampling resistor is connected in series between battery-end and first voltage comparison circuit, from first sampling resistor two
Hold the comparison voltage of output defeated via AD conversion unit by first current-limiting resistance and second current-limiting resistance respectively
Go out to described control unit.
The circuit of the real time resistance of heating plate is detected using the use voltage comparison method of said structure, it is simple in construction, accurately
Degree is high, low cost, fast response time.
It is preferred that the real time resistance detection unit also includes and the first voltage comparison circuit and the second voltage
The switch module of comparison circuit series connection, the switch module is electrically connected with described control unit, according to the control of control unit
Signal changes the working condition of switch module, is unlikely to make heating plate always work at heated condition, realizes the guarantor to heating plate
Shield.
It is preferred that the switch module is switch triode, with long lifespan, safe and reliable, no mechanical wear, switch
Speed is fast, small volume the advantages of.
It is preferred that the real time resistance detection unit detects the real time resistance of heating plate using voltammetry.
Further, the real time resistance detection unit includes voltage detection unit and the collection of collection heating plate voltage
The current detecting unit of heating plate loop current.
Further, the voltage detection unit includes the 5th divider resistance and the 6th divider resistance of series connection, series connection
The 5th divider resistance and the 6th divider resistance afterwards is connected in parallel on the two ends of heating plate, and heating plate voltage is from the described 5th
The tie point output of divider resistance and the 6th divider resistance, and via AD conversion unit to control unit.
Further, the current detecting unit include the second sampling resistor for being connected with the heating plate and with this
The electric current of the second sampling resistor is passed through in the current sample module of two sampling resistors series connection, the current sample module collection, and passes through
Control unit is output to by AD conversion unit.
The real time resistance detection unit of the real time resistance of heating plate is detected using the use voltammetry of said mechanism, with knot
Structure is simple, easy-maintaining, the advantage of fast response time.
It is preferred that the battery is rechargeable battery, it is additionally provided with the cavity of the holding end and the chargeable electricity
The charging module of pond connection, it is easy to use and carry.
It is preferred that being provided with the display device being connected with described control unit on the surface of the holding end, it can be used to show
The contents such as electricity, heat time and temperature, so as to obtain more preferable Consumer's Experience.
It is preferred that the display device is OLED, definition is high, long service life, it is easy to minimize.
It is preferred that the key-press module being connected with described control unit is additionally provided with the holding end, for adjusting heating
The design temperature of piece.Using the key-press module, consumer can according to demand, and the operating temperature of convenient regulation heating plate makes
With conveniently.
It is preferred that the heating plate is the hollow frame-shaped construction of middle setting, current carrying area is reduced, when reducing wait
Between, effectively increase the efficiency of heating plate；On the head of the heating plate provided with tip, convenient fixed cigarette.
It is preferred that the electrical smoking device of the present invention, also including heating plate set is used to wherein to aid in fixing cigarette
The sleeve of branch, the axis of the sleeve is overlapped with the axis of the heating plate.It can make what cigarette was consolidated using the sleeve
It is inserted on heating plate, limited raising using effect.
It is preferred that the sleeve is detachably connected with holding end formation, heating plate convenient for cleaning.
It is preferred that the operating temperature range of the heating plate is 100 DEG C -600 DEG C.
Invention additionally discloses a kind of temprature control method of electrical smoking device, comprise the following steps：
S11：Real time resistance detection unit detects the real time resistance of METAL HEATING PROCESS piece；
S12：The real time temperature of the heating plate is calculated according to formula t=(R-R0)/(R0* α)；Wherein, R is heating plate
Real time resistance, R0 is the cold-state resistance (resistance value under normal temperature) of heating plate, and α is the temperature coefficient of heating sheet resistivity；
S13：Compare the real time temperature and design temperature, and export comparative result；
S14：According to the comparative result come the power output of regulation power supply.
Compared with prior art, the temprature control method of electrical smoking device of the present invention, the temperature collected is heating
The self-temperature of piece, rather than in the prior art using around the heating plate measured by temperature sensor the problem of, control is accurate,
Sensitivity is high, working stability.
It is preferred that the step S14 is specifically included：If the real time temperature is more than the design temperature, reduce described
The power output of power supply, to reduce the temperature of heating plate, until reaching preset temperature；If the real time temperature is less than the setting
Temperature, then raise the power output of the power supply, to raise the temperature of heating plate, until reaching preset temperature.
It is preferred that in the step S11, the detection unit detects the real-time electricity of heating plate by voltage comparison method
Resistance.
It is preferred that in the step S11, the detection unit detects the real time resistance of heating plate by voltammetry.
It is preferred that in step S14, by exporting the pulse width modulation wave of different duty come the output of regulation power supply
Power.
It is preferred that the operating temperature range of the heating plate is 100 DEG C -600 DEG C.
Brief description of the drawings
Fig. 1 show the explosive view of electrical smoking device of the present invention.
Fig. 2 show the enlarged diagram of the heating plate in Fig. 1.
Fig. 3 show the control planning structural representation of electrical smoking device of the present invention.
Fig. 4 show the real-time electricity for detecting heating plate in the embodiment of electrical smoking device of the present invention using voltage comparison method
The circuit connection structure figure of resistance.
Fig. 5 show in the embodiment of electrical smoking device of the present invention and detects the real time resistance of heating plate using voltammetry
Circuit connection structure figure.
Embodiment
To describe technology contents, architectural feature, realization principle and the objects and the effects of the present invention in detail, tie below
Close embodiment and coordinate accompanying drawing to be explained in detail.
A kind of electrical smoking device of use METAL HEATING PROCESS piece, as shown in figure 1, the holding end 10 including hollow form and with institute
The heating plate 20 of the one end of holding end 10 connection is stated, the holding end 10 is used to fix heating plate 20, and facilitates the operation of consumer,
Can be cylindrical shape, or square or other shapes, as long as its due function is realized, so technical scheme
The concrete shape of holding end 10 is not restricted.
The heating plate 20 is that metal material is made, provided with the electricity for providing power supply supply in the cavity of the holding end 20
Pond 30 and control device 40, the control device 40 control the heating by gathering the real time resistance value of the heating plate 20
The temperature of piece 20.
There is simple in construction, simple processing, hardness strong using the made heating plate of metal material, it is environmentally-friendly sanitary, easy to clean
The features such as.Based on the heating plate 20 made by the metal material, the present invention is using without work of the temperature sensor technology to heating plate 20
Make temperature and carry out precise control.Using metal material in heating, then the minor variations of resistivity pass through vector control algorithm
Power output is controlled, the purpose of accurate temperature controlling is finally reached.This method hardware is simple, and temperature is accurate, the stability of product and
Reliability is high.Concrete principle is as follows：
The conductor for the cross-sectional uniformity being made up of certain material, if it is S that length, which is L, cross-sectional area, this section of conductor
Resistance is：ρ is resistivity in R=ρ L/S, formula, and S is cross-sectional area, and R is resistance value, and L is the length of wire.The electricity of conductor material
Resistance rate is decided by the self property of material.The resistivity of various materials is all changed with temperature.In the range of typical temperature, metal
The resistivity of material makees linear change with temperature, and variation relation can be expressed as：ρ and ρ 0 is t respectively in ρ=ρ 0 (1+ α t), formula
DEG C and resistivity at 0 DEG C；α is the temperature coefficient of resistivity, relevant with material.
To relational expression ρ=ρ 0 (1+ α t) both sides with L/S is multiplied by, metallic conductor resistance variation with temperature relation is just obtained：R
Resistance value when R and R0 is t DEG C and 0 DEG C respectively in=R0 (1+ α t), formula；α is the temperature coefficient of resistivity.By fortran one
Under, you can show that the relation between temperature and resistance is：T=(R-R0)/(R0* α).So only it is to be understood that metal material adstante febre
Resistance value, it is possible to calculate the temperature value of metal material, and in this way measure come temperature for material in itself
Temperature, accuracy is high.
Which kind of specifically do heating plate 20 using the metal material of model to be not specifically limited in the present invention, the present embodiment is excellent
The model of several stainless steel materials of choosing：SS304、SS316、SS317.Due to doing heating plate 20 using metal material, compare
The materials such as ceramic heating flake, this material hardness is very high, is hardly damaged, therefore unnecessary cigarette can be directly removed on heating plate
Leaf.
The control device 40 of the present invention is according to above-mentioned temperature-measurement principle, by the real time resistance for detecting METAL HEATING PROCESS piece 20
Value detects the real time temperature of METAL HEATING PROCESS piece 20, so as to reach the purpose to the precise control of temperature, is specially：
As shown in figure 3, the control device 40 include power drive unit, control unit, AD conversion unit (ADC) with
And real time resistance detection unit.
The power drive unit is electrically connected with the battery and the heating plate 20 respectively, for the energy battery 30
Amount is converted into energy needed for heating plate 20, and described control unit is electrical with power drive unit and real time resistance detection unit respectively
Connection, in the present embodiment, described control unit use ARM Cortex-M3 core microcontrollers, certainly, and the present invention is not also to control
The concrete model of device processed is made to limit, and those skilled in the art can be from other according to hobby or other special considerations
The controller of row or model.The ADC is arranged between described control unit and real time resistance detection unit, for electricity in real time
The analog signal that resistance detection unit is exported is converted into the data signal that control unit can be recognized.
The real time resistance detection unit is used for the real time resistance for detecting heating plate 20, detected value after analog-to-digital conversion
Control unit is transferred to, described control unit calculates heating plate according to the real time resistance value of heating plate according to above-mentioned computing formula
20 current temperature, adjust the power output of the power drive unit.
In the present embodiment, control unit adjusts the power drive unit by exporting the PWM ripples of different duty
Power output, with harmonic wave is small, dynamic response is fast, electrical source power factor is high, relatively easy control circuit, low cost and right
The strong advantage of the resistivity of noise.
Real time resistance detection unit can go to realize in detection resistance by various achievable circuits, of the invention to use
Following two specific embodiments, the real time resistance and voltammetry of voltage comparison method detection heating plate detect the real-time of heating plate
Resistance, it is specific as follows：
The voltage comparison method detects that the circuit structure of the real time resistance of heating plate is：Fig. 4 is refer to, includes the of series connection
One voltage ratio more electric 100 and second voltage comparison circuit 200, the first voltage comparison circuit 100 are used to detect heating plate electricity
Pressure, the second voltage comparison circuit 200 is used to produce a comparison voltage being compared with the heating plate voltage.By adding
The ratio of backing voltage and comparison voltage, and produce the resistance of comparison voltage and draw the real time resistance value of heating plate 20.
The first voltage comparison circuit 100 includes the first divider resistance R1 being connected in series and the second partial pressure electricity
Resistance R2, the first divider resistance R1 and the second divider resistance R2 are connected in series latter end ground connection, the positive pole of the other end and heating plate 20
Connection, the heating plate voltage is exported at the first divider resistance R1 and the second divider resistance R2 tie point G1, via
ADC is output to control unit.
The second voltage comparison circuit 200 includes the first sampling resistor R101, the first current-limiting resistance R3 and the second current limliting
Resistance R4；The first sampling resistor R101 is connected in series between anode end and first voltage comparison circuit 100, from this
The comparison voltage of first sampling resistor R101 two ends output passes through the first current-limiting resistance R3 and the second current-limiting resistance R4 respectively
Described control unit is output to via ADC.
Above-mentioned voltage comparison method detects that the specific work process of the circuit of the real time resistance of heating plate 20 is：Power on
Afterwards, voltage division signal that is to say that comparison voltage signal transmission, to ADC, is entered by the first current-limiting resistance R3 and the second current-limiting resistance R4
Row analog-to-digital conversion, by ADC the comparing voltage value signal transmission measured to control unit；Pass through the first divider resistance R1, second
The voltage signal of heating plate 20 is transferred to ADC after divider resistance R2 partial pressures, analog-to-digital conversion is carried out, by ADC the heating plate measured
20 voltage value signal is transferred to control unit；Then formula is passed through：R=U*R1/U1 calculates the resistance of METAL HEATING PROCESS piece 20,
Wherein R is the real time resistance of heating plate, and U is the heating plate voltage, and U1 is comparison voltage, and R1 is sampling resistor resistance.
Heating can be drawn according to formula t=(R-R0)/(R0* α) by measuring control unit after the real time resistance of heating plate 20
The real time temperature of piece, and realtime power, when METAL HEATING PROCESS piece temperature is more than or less than setting value, control unit is automatically adjusted
The power output of power drive unit, that is, adjust the dutycycle of PWM ripples, so that steady temperature.
The circuit of the real time resistance of heating plate is detected using above-mentioned voltage comparison method, also including being compared with the first voltage
The switch module 300 that circuit 100 and second voltage comparison circuit 200 are connected, the switch module 300 and described control unit electricity
Property connection.In the present embodiment, the switch module 300 be switch triode, the triode by a current-limiting resistance R7 with
Control unit is connected, after power on, and control unit exports high level, triode ON by the current-limiting resistance R7.
Fig. 5 is refer to, the present invention uses the principle of the real time resistance of voltammetry detection heating plate for by detecting heating plate
20 loop current and the output voltage of heating plate calculate the real time resistance of heating plate, and specific circuit structure includes collection
The voltage detection unit 400 of heating plate voltage and the current detecting unit 500 of collection heating plate loop current.
The voltage detection unit 400 includes the 5th divider resistance R5 and six divider resistance R6 being connected in series, the string
The 5th divider resistance R5 and the 6th divider resistance R6 for joining connection are connected in parallel on the two ends of heating plate 20, and heating plate voltage is from described the
Five divider resistance R5 and the 6th divider resistance R6 tie point G2 outputs, and via ADC to control unit.
The current detecting unit 500 includes the second sampling resistor R201 for being connected with the heating plate 20, and with this
The current sample module 600 of two sampling resistor R201 two ends connection, the collection of current sample module 600 is by the second sampling electricity
R201 electric current is hindered, and control unit is output to via AD conversion unit.Current sample module 600 in the present embodiment is used
Current sample IC, builds circuit simply, easy to maintenance.
Above-mentioned sampling voltammetry is to the circuit course of work that is detected of heating sheet resistance in good time：Pass through the 5th partial pressure electricity
After resistance R5 and the 6th divider resistance R6 partial pressures ADC progress analog-to-digital conversions, Ran Houchuan are given the output voltage signal of heating plate 20
It is defeated to arrive control unit, obtain the magnitude of voltage of heating plate 20；Detected by the sampling resistor R201 of current sample module 600 and second
The loop current signals of heating plate 20, and control unit is transferred to after ADC progress analog-to-digital conversions, obtain the loop electricity of heating plate
Flow valuve.Then formula is passed through：R=U/I calculates the resistance of METAL HEATING PROCESS piece 20.Wherein U is METAL HEATING PROCESS piece voltage, and I is stream
Cross the electric current of METAL HEATING PROCESS piece.
The temperature control to heating plate 20, specific principle of control temperature can be implemented after the real time resistance value for detecting heating plate 20
Process is existing in the embodiment that resistance detection is carried out using voltage comparison method to be explained in detail, is not repeated herein.
In order to improve the precision of resistance used in circuit in control accuracy, the present invention within ± 1%, that is to say, that
First divider resistance R1, the second divider resistance R2, the first current-limiting resistance R3, the second current-limiting resistance R4, the 5th divider resistance R5,
Six divider resistance R6, the first sampling resistor R101 and the second sampling resistor R201 precision are controlled within ± 1%.
The carrying of consumer and use for convenience, the battery 30 of electrical smoking device of the present invention uses rechargeable battery,
The charging module being connected with the rechargeable battery is additionally provided with the cavity of the holding end 10, for being filled to rechargeable battery
Electricity.
In order to which user obtains more preferable Consumer's Experience, it is provided with and connects with described control unit on the surface of the holding end 10
The display device 60 connect, the display device 60 of the present embodiment uses OLED, come show battery electric quantity, the heat time, design temperature,
The contents such as real time temperature.In addition, can also set LED to carry out the working condition of display device on holding end 10.
In addition, the temperature of heating plate 20 is adjusted for convenience, so as to obtain different mouthfeels, on the holding end 10 also
Provided with the key-press module 50 being connected with described control unit, the design temperature for adjusting heating plate 20 is easy to use.The present invention
Described in heating plate 20 operating temperature range be 100 DEG C -600 DEG C.
Fig. 2 is refer to, because the heating plate 20 of electrical smoking device of the present invention is made using metal material, is added to improve
The efficiency of backing, shortens the stand-by period, and the heating plate 20 is the hollow frame-shaped construction of middle setting, and in the heating plate
20 head is provided with tip 21, and cigarette 80 is inserted on tip when using, convenient to fix.
In addition, please referring back to Fig. 1, because cigarette 80 is long, and heating plate 20 is typically shorter and smaller, so in order to increase
The steadiness of cigarette 80, the electrical smoking device of use METAL HEATING PROCESS piece of the invention also includes the heating plate 20 to be enclosed within it
In be used to fix the sleeve 70 of cigarette 80, the axis of the sleeve 70 is overlapped with the axis of the heating plate 20.According to one
As cigarette 80 diameter, being dimensioned to of sleeve 70 have interference to be advisable between cigarette 80.And for convenience to heating plate
20 are cleaned, and the formation of holding end 10 described in the sleeve 70 is detachably connected, for example, for threaded connection or can snap connection.
The invention also discloses a kind of temprature control method of the electrical smoking device of use METAL HEATING PROCESS piece, the electronic cigarette
Device includes holding end 10 and the heating plate 20 being connected with the holding end 10, and the heating plate 20 is that metal is made, described
Battery 30 and control device 40 are provided with the cavity of holding end 10, temperature controlled method is carried out to the heating plate 20 to be included such as
Lower step：
S11：Real time resistance detection unit detects the real time resistance of heating plate；
The real time resistance of heating plate can be detected by voltage comparison method, the real-time of voltammetry detection heating plate can be also crossed all
Resistance, or the preferred other method of those skilled in the art；
S12：The real time temperature and power output of heating plate are calculated by formula t=(R-R0)/(R0* α)；Wherein, R is
The real time resistance value of heating plate, R0 is the cold-state resistance (resistance value under normal temperature) of heating plate, and α is METAL HEATING PROCESS sheet resistivity
Temperature coefficient；
S13：Temperature compares；Control device is compared the real time temperature of the heating plate calculated in S12 with design temperature
Compared with；
S14：Temperature adjustment；Temperature comparative result and electrical smoking device of the control device in S13 it is specified
The power output of power supply is adjusted power, and control device is by exporting the PWM ripples of different duty in the present embodiment
Carry out the power output of regulation power supply, when the real time temperature of heating plate is more than setting value, reduce the power output of power supply, so as to drop
Low temperature, is consistent until with setting value；When the real time temperature of heating plate is less than setting value, the power output of boost source, from
And temperature is raised, it is consistent until with setting value.In the present embodiment, the temperature range of heating plate is controlled at 100 DEG C -600 DEG C, with
The mouthfeel obtained.
Claims (28)
1. a kind of electrical smoking device, it is characterised in that holding end including hollow form and be connected with described holding end one end
METAL HEATING PROCESS piece, is provided with control device, the control device is by gathering the heating plate in the cavity of the holding end
Real time resistance value adjusts the temperature of the heating plate.
2. electrical smoking device according to claim 1, it is characterised in that be additionally provided with electricity in the cavity of the holding end
Pond, and the control device includes power drive unit, AD conversion unit, control unit and real time resistance detection unit；
The power drive unit is electrically connected with the battery and the heating plate respectively, described control unit respectively with it is described
Power drive unit and the real time resistance detection unit are electrically connected with, and the AD conversion unit is used for the real time resistance
The analog signal that detection unit is exported is converted into digital data transmission to described control unit；
The real time resistance detection unit is used for the real time resistance for detecting the heating plate, and described control unit is according to heating plate
Real time resistance value adjusts the power output of the power drive unit.
3. electrical smoking device according to claim 2, it is characterised in that described control unit is by exporting different duties
The pulse width modulation wave of ratio adjusts the power output of the power drive unit.
4. electrical smoking device according to claim 2, it is characterised in that the real time resistance detection unit uses voltage
Comparison method detects the real time resistance of the heating plate.
5. electrical smoking device according to claim 4, it is characterised in that the real time resistance detection unit includes series connection
First voltage comparison circuit and second voltage comparison circuit, the first voltage comparison circuit be used for detect heating plate voltage,
The second voltage comparison circuit is used to produce a comparison voltage being compared with the heating plate voltage.
6. electrical smoking device according to claim 5, it is characterised in that the first voltage comparison circuit includes mutually going here and there
The first divider resistance and the second divider resistance of connection, first divider resistance and second divider resistance are connected in series latter
End ground connection, the other end is connected with the positive pole of the heating plate, and the heating plate voltage is from first divider resistance and described the
The connection junction output of two divider resistances, described control unit is output to via the AD conversion unit.
7. electrical smoking device according to claim 5, it is characterised in that the second voltage comparison circuit includes first
Sampling resistor, the first current-limiting resistance and the second current-limiting resistance；First sampling resistor is connected in series in anode end and institute
State between first voltage comparison circuit, the comparison voltage exported from the first sampling resistor two ends passes through described first respectively
Current-limiting resistance and second current-limiting resistance are output to described control unit via the AD conversion unit.
8. electrical smoking device according to claim 5, it is characterised in that the real time resistance detection unit also include with
The first voltage comparison circuit and the switch module of second voltage comparison circuit series connection, the switch module and the control
Unit processed is electrically connected with.
9. electrical smoking device according to claim 8, it is characterised in that the switch module is switch triode.
10. electrical smoking device according to claim 2, it is characterised in that the real time resistance detection unit is using volt
Peace method detects the real time resistance of the heating plate.
11. electrical smoking device according to claim 10, it is characterised in that the real time resistance detection unit includes adopting
Collect the voltage detection unit of heating plate voltage and the current detecting unit of collection heating plate loop current.
12. electrical smoking device according to claim 11, it is characterised in that the voltage detection unit includes series connection
5th divider resistance and the 6th divider resistance, the 5th divider resistance and the 6th divider resistance after series connection are connected in parallel on institute
The two ends of heating plate are stated, the tie point of the heating plate voltage from the 5th divider resistance and the 6th divider resistance is defeated
Go out, and described control unit is output to via the AD conversion unit.
13. electrical smoking device according to claim 11, it is characterised in that the current detecting unit include with it is described
Second sampling resistor of heating plate series connection and the current sample module connected with second sampling resistor, the current sample module
The electric current of second sampling resistor is passed through in collection, and is output to described control unit via the AD conversion unit.
14. electrical smoking device according to claim 2, it is characterised in that the battery is rechargeable battery.
15. electrical smoking device according to claim 14, it is characterised in that be additionally provided with the cavity of the holding end
The charging module being connected with the rechargeable battery.
16. electrical smoking device according to claim 2, it is characterised in that be provided with and institute on the surface of the holding end
State the display device of control unit connection.
17. electrical smoking device according to claim 16, it is characterised in that the display device is OLED.
18. electrical smoking device according to claim 2, it is characterised in that be additionally provided with the holding end with it is described
The key-press module of control unit connection, the design temperature for adjusting the heating plate.
19. electrical smoking device according to claim 1, it is characterised in that the heating plate is that middle setting is hollow
Frame-shaped construction, on the head of the heating plate provided with tip.
20. electrical smoking device according to claim 1, it is characterised in that also including being sheathed on the heating plate external application
In the sleeve of fixed cigarette, the axis of the sleeve is overlapped with the axis of the heating plate.
21. electrical smoking device according to claim 20, it is characterised in that the sleeve and the holding end are detachable
Connection.
22. electrical smoking device according to claim 1, it is characterised in that the operating temperature range of the heating plate is
100℃-600℃。
23. a kind of temprature control method of electrical smoking device, it is characterised in that comprise the following steps：
S11：Real time resistance detection unit detects the real time resistance of METAL HEATING PROCESS piece；
S12：The real time temperature of the heating plate is calculated according to formula t=(R-R0)/(R0* α)；Wherein, R is the real-time of heating plate
Resistance, R0 is the cold-state resistance (resistance value under normal temperature) of heating plate, and α is the temperature coefficient of heating sheet resistivity；
S13：Compare the real time temperature and design temperature, and export comparative result；
S14：According to the comparative result come the power output of regulation power supply.
24. the temprature control method of electrical smoking device according to claim 23, it is characterised in that the step S14
Specifically include：If the real time temperature is more than the design temperature, reduce the power output of the power supply, to reduce heating plate
Temperature, until reach preset temperature；If the real time temperature is less than the design temperature, the output work of the power supply is raised
Rate, to raise the temperature of heating plate, until reaching preset temperature.
25. the temprature control method of electrical smoking device according to claim 23, it is characterised in that in the step
In S11, the detection unit detects the real time resistance of heating plate by voltage comparison method.
26. the temprature control method of electrical smoking device according to claim 23, it is characterised in that in the step
In S11, the detection unit detects the real time resistance of heating plate by voltammetry.
27. the temprature control method of electrical smoking device according to claim 24, it is characterised in that in step S14,
By exporting the pulse width modulation wave of different duty come the power output of regulation power supply.
28. the temprature control method of electrical smoking device according to claim 23, it is characterised in that the heating plate
Operating temperature range is 100 DEG C -600 DEG C.
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