CN115778006A - Aerosol generating device and temperature control method and device thereof - Google Patents
Aerosol generating device and temperature control method and device thereof Download PDFInfo
- Publication number
- CN115778006A CN115778006A CN202211454965.9A CN202211454965A CN115778006A CN 115778006 A CN115778006 A CN 115778006A CN 202211454965 A CN202211454965 A CN 202211454965A CN 115778006 A CN115778006 A CN 115778006A
- Authority
- CN
- China
- Prior art keywords
- heating element
- electromagnetic heating
- capacitor
- aerosol
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000000443 aerosol Substances 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 270
- 238000001514 detection method Methods 0.000 claims abstract description 50
- 230000008859 change Effects 0.000 claims abstract description 25
- 239000003990 capacitor Substances 0.000 claims description 93
- 238000001914 filtration Methods 0.000 claims description 9
- 230000001939 inductive effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000004590 computer program Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/50—Control or monitoring
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/50—Control or monitoring
- A24F40/57—Temperature control
Landscapes
- Control Of Temperature (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The present application relates to an aerosol-generating device and a method and device for controlling the temperature of an aerosol-generating device. The aerosol-generating device comprises: the device comprises a power supply module, a control module, a heating circuit and a detection circuit; the power supply module is used for supplying energy to the heating circuit; the control module is used for obtaining an electric signal of an electromagnetic heating element in the heating circuit through the detection circuit; and after the sudden change of the electric signal of the electromagnetic heating element is detected, controlling the working time of the heating circuit according to a preset corresponding relation so as to control the temperature of the electromagnetic heating element, wherein the preset corresponding relation is the corresponding relation between an electric signal variable and a temperature variable. The aerosol generating device can improve the accuracy of temperature control.
Description
Technical Field
The present disclosure relates to the field of atomization devices, and more particularly, to an aerosol generating device and a temperature control method and apparatus thereof.
Background
The working principle of the aerosol generating device is that an atomizing means is used for heating and evaporating an atomizing medium into aerosol in an electromagnetic induction heating mode, and then the aerosol is inhaled by a consumer, so that the smoking experience is achieved. The electromagnetic heating has the advantages of fast temperature rise, energy conservation and the like, and is more favorable for fast control of the aerosol generating device.
The conventional temperature control technology mainly measures the direct current of a power supply end in a heating circuit, and controls the temperature of a heating element according to the direct current. For the aerosol generating device adopting the electromagnetic heating mode, the heating module is made of a magnetic material, and the magnetic material has Curie temperature, namely when the heating module reaches the Curie temperature, magnetic permeability and electric conductivity can change suddenly, so that inductance and resistance can change suddenly, the corresponding relation between direct current and the temperature of the heating element is not clear, and the traditional technology controls the temperature inaccurately by measuring the direct current in a circuit.
Disclosure of Invention
In view of the above, it is necessary to provide an aerosol generating device, a temperature control method thereof, and a device capable of improving accuracy of temperature control.
In a first aspect, the present application provides an aerosol-generating device. The aerosol-generating device comprises:
the device comprises a power supply module, a control module, a heating circuit and a detection circuit;
the power supply module is used for supplying energy to the heating circuit;
the control module is used for obtaining an electric signal of an electromagnetic heating element in the heating circuit through the detection circuit; and after the sudden change of the electric signal of the electromagnetic heating element is detected, controlling the working time of the heating circuit according to a preset corresponding relation so as to control the temperature of the electromagnetic heating element, wherein the preset corresponding relation is the corresponding relation between an electric signal variable and a temperature variable.
In one embodiment, the heating circuit comprises:
the device comprises a first capacitor, a second capacitor, an electromagnetic heating element and a first switch;
the first switch is connected with the first capacitor in parallel;
the first end of the second capacitor is connected with the first end of the first capacitor, and the second end of the second capacitor is connected with the first end of the electromagnetic heating element; the first end of the second capacitor is also connected with the power supply module;
the second end of the electromagnetic heating element is respectively connected with the second end of the first capacitor and the ground;
the detection circuit is connected with the electromagnetic heating element in parallel and is used for detecting the electric signal of the electromagnetic heating element.
In one embodiment, the heating circuit comprises:
the first capacitor, the second capacitor, the electromagnetic heating element, the first switch and the second resistor are connected in series;
the second switch is connected with the third capacitor in parallel;
the first end of the fourth capacitor is connected with the first end of the third capacitor, and the second end of the fourth capacitor is connected with the first end of the electromagnetic heating element; the first end of the fourth capacitor is also connected with the power supply module;
the second end of the electromagnetic heating element is respectively connected with the second end of the third capacitor and the ground through the first resistor;
the detection circuit is connected with the first resistor in parallel and is used for detecting an electric signal of the first resistor;
the control module is further used for obtaining an electric signal of the electromagnetic heating element according to the electric signal of the first resistor.
In one embodiment, the heating circuit comprises:
a fifth capacitor, a sixth capacitor, an electromagnetic heating element and a third switch;
the third switch is connected with the sixth capacitor in parallel and then connected with the electromagnetic heating element in series;
the first end of the fifth capacitor is connected with one end, far away from the sixth capacitor, of the electromagnetic heating element, and the second end of the fifth capacitor is respectively connected with one end, far away from the electromagnetic heating element, of the sixth capacitor and the ground;
the detection circuit is used for detecting the electric signal of the electromagnetic heating element.
In one embodiment, the heating circuit further comprises:
the mutual inductor and the second resistor are connected in parallel;
the mutual inductor is used for inducing the electric signal of the electromagnetic heating element,
the detection circuit is used for detecting the electric signal of the second resistor.
In one embodiment, the detection circuit comprises:
the rectifying module, the following module and the filtering module are sequentially connected in series;
the input end of the rectifying module is connected with the electromagnetic heating element, and the output end of the filtering module is connected with the control module.
In one embodiment, the detection circuit further comprises:
and the voltage division module is connected between the rectification module and the following module.
In a second aspect, the present application also provides a method of temperature control of an aerosol-generating device, the method comprising:
obtaining an electrical signal of an electromagnetic heating element in the aerosol-generating device;
and after the sudden change of the electric signal of the electromagnetic heating element is detected, controlling the working time of the heating circuit according to a preset corresponding relation so as to control the temperature of the electromagnetic heating element, wherein the preset corresponding relation is the corresponding relation between an electric signal variable and a temperature variable.
In one embodiment, the controlling the operating time of the heating circuit according to the preset corresponding relationship to control the temperature of the electromagnetic heating element includes:
and controlling the on or off of a switch in the aerosol generating device according to a preset corresponding relation so as to control the working time of the heating circuit.
In a third aspect, the present application also provides a temperature control device for an aerosol-generating device, the device comprising:
an obtaining module for obtaining an electrical signal of an electromagnetic heating element in the aerosol-generating device;
and the processing module is used for controlling the working time of the heating circuit according to a preset corresponding relation after the sudden change of the electric signal of the electromagnetic heating element is detected so as to control the temperature of the electromagnetic heating element, wherein the preset corresponding relation is the corresponding relation between an electric signal variable and a temperature variable.
The aerosol-generating device, and the temperature control method and device therefor, the aerosol-generating device includes: the device comprises a power supply module, a control module, a heating circuit and a detection circuit; the power supply module is used for supplying energy to the heating circuit; the control module is used for obtaining an electric signal of an electromagnetic heating element in the heating circuit through the detection circuit; and after the sudden change of the electric signal of the electromagnetic heating element is detected, controlling the working time of the heating circuit according to a preset corresponding relation so as to control the temperature of the electromagnetic heating element, wherein the preset corresponding relation is the corresponding relation between an electric signal variable and a temperature variable. In this way, this application detects the electric signal of electromagnetic heating element in the aerosol generating device through detection circuitry, utilizes electromagnetic heating element to have this characteristic of curie temperature, can be definitely when the sudden change appears in the electric signal that detects, and electromagnetic heating element reaches curie temperature, avoids the influence of various other factors of aerosol generating device in the use. After the sudden change of the electric signal of the electromagnetic heating element is detected, the working time of the heating circuit is controlled according to the corresponding relation between the electric signal variable and the temperature variable, so that the temperature of the electromagnetic heating element is controlled, and the temperature can be accurately controlled.
Drawings
Figure 1 is a schematic block diagram of an aerosol-generating device according to an embodiment;
figure 2 is a schematic diagram of the electrical circuit arrangement of the aerosol-generating device of the first embodiment;
FIG. 3 is a graph illustrating the electrical signal and the envelope of the electromagnetic heating element according to the first embodiment;
figure 4 is a schematic diagram of the electrical circuit arrangement of an aerosol-generating device according to a second embodiment;
FIG. 5 is a graph illustrating the electrical signal and the envelope of the electromagnetic heating element in the second embodiment;
figure 6 is a schematic diagram of the electrical circuit arrangement of an aerosol-generating device according to a third embodiment;
FIG. 7 is a graph illustrating the electrical signal and the envelope of the electromagnetic heating element according to the third embodiment;
figure 8 is a schematic diagram of the electrical circuit arrangement of an aerosol-generating device according to a fourth embodiment;
FIG. 9 is a graph illustrating the electrical signal and the envelope of the electromagnetic heating element in the fourth embodiment;
FIG. 10 is a graph illustrating a temperature profile of an electromagnetic heating element according to an embodiment;
FIG. 11 is a block diagram of an embodiment of a detection circuit;
FIG. 12 is a schematic circuit diagram of an embodiment of a detection circuit;
figure 13 is a schematic block diagram of a temperature control device of an aerosol-generating device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, there is provided an aerosol-generating device, as shown in fig. 1, comprising:
a power module 110, a control module 120, a heating circuit 130, and a detection circuit 140; the power module 110 is connected to the control module 120 and the heating circuit 130, respectively, the control module 120 is further connected to the heating circuit 130, and the heating circuit 130 is connected to the detection circuit 140.
A power module 110 for providing power to the heating circuit 130; the same power module 110 also provides power to the control module 120 so that the heating circuit 130, the control module 120, works properly. The heating circuit 130 includes an electromagnetic heating element. The electromagnetic heating element is heated with energy provided by the power module 110 to atomize the substrate within the aerosol-generating device. The control module 120 can control the operation time of the heating circuit 130 in a unit operation period, so as to adjust the power of the heating circuit 130 and control the temperature of the electromagnetic heating element.
A control module 120 for obtaining an electrical signal of the electromagnetic heating element in the heating circuit 120 through the detection circuit 140; after detecting that the electrical signal of the electromagnetic heating element changes suddenly, the operating time of the heating circuit 120 is controlled according to a preset corresponding relationship to control the temperature of the electromagnetic heating element, wherein the preset corresponding relationship is a corresponding relationship between an electrical signal variable and a temperature variable.
Specifically, first, briefly describing the principle of the present application, since the magnetic heating material has the characteristic of curie temperature, after the heating temperature reaches the distance temperature of the magnetic heating element, the magnetic permeability and the electric conductivity thereof may change abruptly, thereby causing the inductance and the resistance to change abruptly. This application utilizes this characteristic, when confirming magnetic heating material and reaching curie temperature, the not corresponding problem of temperature and the signal of telecommunication of magnetic heating material is leaded to because influences such as operational environment or operating condition to aerosol generation device because of the signal of telecommunication of corresponding magnetic heating material, and wherein, the signal of telecommunication includes voltage or electric current. Meanwhile, after the magnetic heating material reaches the curie temperature, the temperature variation of the magnetic heating material and the variation of the electric signal thereof are in a corresponding relationship. The correspondence is stored in advance in the aerosol-generating device. It should be noted that different magnetic heating elements have different curie temperatures.
By utilizing the above characteristics, the control module 120 obtains the electrical signal of the electromagnetic heating element in the heating circuit 120 through the detection circuit 140, then detects/identifies the obtained electrical signal, and when it is detected that the electrical signal of the electromagnetic heating element changes suddenly, it indicates that the temperature of the electromagnetic heating element reaches the curie temperature. The duty time of the heating circuit 120 in a unit period can then be controlled according to the pre-stored correspondence, thus achieving the magnitude of the electrical signal applied to the magnetic heating element in the unit period, and thus achieving the control of the temperature of the electromagnetic heating element.
The aerosol-generating device comprises: the device comprises a power supply module, a control module, a heating circuit and a detection circuit; the power supply module is used for supplying energy to the heating circuit; the control module is used for obtaining an electric signal of an electromagnetic heating element in the heating circuit through the detection circuit; and after the sudden change of the electric signal of the electromagnetic heating element is detected, controlling the working time of the heating circuit according to a preset corresponding relation so as to control the temperature of the electromagnetic heating element, wherein the preset corresponding relation is the corresponding relation between an electric signal variable and a temperature variable. In this way, this application detects the electric signal of electromagnetic heating element in the aerosol generating device through detection circuitry, utilizes electromagnetic heating element to have this characteristic of curie temperature, can be definitely when the sudden change appears in the electric signal that detects, and electromagnetic heating element reaches curie temperature, avoids the influence of various other factors of aerosol generating device in the use. After the sudden change of the electric signal of the electromagnetic heating element is detected, the working time of the heating circuit is controlled according to the corresponding relation between the electric signal variable and the temperature variable, so that the temperature of the electromagnetic heating element is controlled, and the temperature can be accurately controlled.
As an example, referring to fig. 2, the heating circuit 130 includes:
a first capacitor 131, a second capacitor 132, an electromagnetic heating element 133 and a first switch 134.
Wherein, the first switch 134 is connected in parallel with the first capacitor 131; a first end of the second capacitor 132 is connected with a first end of the first capacitor 131, and a second end of the second capacitor 132 is connected with a first end of the electromagnetic heating element 133; the first end of the second capacitor 132 is further connected to the power module 110; a second terminal of the electromagnetic heating element 133 is connected to a second terminal of the first capacitor 131 and ground, respectively.
The detection circuit 140 is connected in parallel with the electromagnetic heating element 133, and the detection circuit 140 is used for detecting an electric signal of the electromagnetic heating element 133.
In this embodiment, the first switch 134 is a MOS transistor, and may be implemented as another type of switch. The control module 120 is connected to the enable end of the MOS transistor, and the control module 120 can control the MOS transistor to be turned on or off, so as to control the electromagnetic heating element 133.
Specifically, when the MOS transistor is controlled to be turned on by the control module 120, the current output by the power module 110 and the alternating current on the electromagnetic heating element 133 and the second capacitor 132 flow through the first switch 134, the voltage across the first capacitor 131 is 0, when the MOS transistor is controlled to be turned off by the control module 120, the current output by the power module 110 and the alternating current on the electromagnetic heating element 133 and the second capacitor 132 charge the first capacitor 131 in a first-to-first manner, the first capacitor 131 starts to discharge as the alternating current enters a negative half cycle until the instantaneous absolute value of the alternating current is greater than the current output by the power module 110, and after the first capacitor 131 finishes discharging, the voltage across the first capacitor 131 is 0, that is, the voltage across the MOS transistor is 0. Then entering the next period, the MOS tube is conducted.
The heating circuit 130 belongs to class E, and in a period, the MOS transistor is turned on, the voltage on the MOS transistor is 0, and the current is not 0; the MOS tube is disconnected, the voltage on the MOS tube is not 0, and the current is 0, so that the MOS tube does not consume electric energy. Under the working state, the electromagnetic heating element 133 and the second capacitor 132 are always in the resonance state, the alternating-current voltage at the two ends of the electromagnetic heating element 133 is converted into a direct-current voltage signal suitable for being collected by the control module 120 through the detection circuit 140, and the control module 120 performs sampling through the detection circuit 140 to obtain the direct-current voltage signal of the electromagnetic heating element 133.
In the using process, the control module 120 determines whether the electromagnetic heating element 1312 reaches the curie temperature point according to the sampled voltage signal, and when the electromagnetic heating element 1312 reaches the curie temperature point, the equivalent inductance and the equivalent resistance of the electromagnetic heating element 133 are significantly changed, and the voltage across the corresponding electromagnetic heating element 133 is significantly changed.
Referring to fig. 3, fig. 3 is a graph illustrating the electric signal and the envelope acquired during the test process of the circuit shown in fig. 2. In fig. 3, the abscissa represents time, and the ordinate represents voltage (in a specific implementation, current), wherein each envelope represents a detected voltage or current waveform, and then a maximum value of each envelope is used to form a corresponding electrical signal (a direct current signal), where the electrical signal is a voltage signal. Fig. 3 shows that at the curie temperature point, the voltage signal has a inflection point (the time when the left trough is located), and the control module 120 determines the inflection point, which indicates that the electromagnetic heating element 1312 reaches the curie temperature point. It is concluded that the voltage value at this point corresponds to the curie temperature of the electromagnetic heating element 1312. When the electromagnetic heating element 1312 reaches the curie temperature, the control module 120 controls the magnitude of the voltage signal applied to the two ends of the electromagnetic heating element 133 by controlling the on-time (duty ratio) of the MOS transistor, and simultaneously tests the temperature of the electromagnetic heating element 1312 through a temperature measuring instrument to find a corresponding curve of the temperature and the voltage. Finally, the control module 120 controls the temperature of the electromagnetic heating element 1312 by controlling the magnitude of the voltage signal applied across the electromagnetic heating element 133 according to the temperature/voltage curve.
Because alternating current signals are larger than direct current signals, the anti-interference capability is strong. Therefore, the present embodiment obtains more accurate data by detecting the ac signal of the electromagnetic heating element 137 compared with the dc signal in the detection circuit in the prior art, and at the same time, directly detecting the electromagnetic heating element 137 can avoid the influence caused by other devices or wires, and the detection result is reliable.
As an example, referring to fig. 4, the heating circuit 130 includes:
a third capacitor 135, a fourth capacitor 136, an electromagnetic heating element 137, a second switch 138 and a first resistor 139.
The second switch 138 is connected in parallel with the third capacitor 135; a first end of the fourth capacitor 136 is connected with a first end of the third capacitor 135, and a second end of the fourth capacitor 136 is connected with a first end of the electromagnetic heating element 137; the first end of the fourth capacitor 136 is further connected to the power module 110; a second terminal of the electromagnetic heating element 137 is connected to a second terminal of the third capacitor 135 and ground via a first resistor 139, respectively.
And a detection circuit 140 connected in parallel with the first resistor 139, wherein the detection circuit 140 is used for detecting the electric signal of the first resistor 139.
The control module 120 is further configured to obtain an electrical signal of the electromagnetic heating element 137 according to the electrical signal of the first resistor 139.
In this embodiment, the second switch 138 is a MOS transistor, and may be implemented by other types of switches. The control module 120 is connected to the enable end of the MOS transistor, and the control module 120 can control the MOS transistor to be turned on or off, so as to control the electromagnetic heating element 137.
Specifically, when the MOS transistor is controlled to be turned on by the control module 120, the current output by the power module 110 and the alternating current on the electromagnetic heating element 137 and the fourth capacitor 136 flow through the second switch 138, the voltage at two ends of the third capacitor 135 is 0, when the MOS transistor is controlled to be turned off by the control module 120, the current output by the power module 110 and the alternating current on the electromagnetic heating element 137 and the fourth capacitor 136 charge the third capacitor 135 in a first-order manner, the third capacitor 135 starts to discharge as the alternating current enters a negative half cycle until the instantaneous absolute value of the alternating current value is greater than the current output by the power module 110, and after the discharge of the third capacitor 135 is completed, the voltage at two ends of the third capacitor 135 is 0, that is, the voltage at two ends of the MOS transistor is 0. And then entering the next period, and conducting the MOS tube.
The heating circuit 130 belongs to class E, and in a period, the MOS transistor is turned on, the voltage on the MOS transistor is 0, and the current is not 0; the MOS tube is disconnected, the voltage on the MOS tube is not 0, and the current is 0, so that the MOS tube does not consume electric energy. In the working state, the electromagnetic heating element 137 and the fourth capacitor 136 are always in the resonance state.
Since the first resistor 139 is connected in series with the electromagnetic heating element 137 in the same circuit, the current passing through the electromagnetic heating element 137 is the same as the current passing through the first resistor 139. In this embodiment, the alternating current of the first resistor 139 is converted into an alternating voltage, the alternating voltage is converted into a direct voltage signal suitable for being collected by the control module 120 through the detection circuit 140, the control module 120 performs sampling through the detection circuit 140, and the control module 120 can perform conversion to obtain the direct voltage signal of the electromagnetic heating element 137.
In the using process, the control module 120 determines whether the electromagnetic heating element 1312 reaches the curie temperature point according to the sampled voltage signal, and when the electromagnetic heating element 1312 reaches the curie temperature point, the equivalent inductance and the equivalent resistance of the electromagnetic heating element 137 are significantly changed, and the voltage across the corresponding electromagnetic heating element 137 is significantly changed.
Referring to fig. 5, fig. 5 is a graph illustrating the electrical signal and envelope acquired during the test of the circuit shown in fig. 4. In fig. 5, the abscissa is time, and the ordinate is voltage (in an implementation, current may be collected), where each envelope is a detected voltage waveform, and then a maximum value of each envelope is used to form a corresponding electrical signal (dc signal), where the electrical signal is a voltage signal. Fig. 5 shows that at the curie temperature point, a voltage signal may have an inflection point (the time of the left trough may be low according to the variation trend, for example, the detected electrical signal first decreases and then increases, and at this time, it is considered that a discontinuity point/inflection point occurs), and the control module 120 determines the inflection point, which indicates that the electromagnetic heating element 1312 reaches the curie temperature point. It is concluded that the voltage value at this time corresponds to the curie temperature of electromagnetic heating element 1312. When the electromagnetic heating element 1312 reaches the curie temperature, the control module 120 controls the magnitude of the voltage signal applied to the two ends of the electromagnetic heating element 137 by controlling the on-time (duty ratio) of the MOS transistor, and simultaneously tests the temperature of the electromagnetic heating element 1312 through a temperature measuring instrument to find a corresponding curve of the temperature and the voltage. Finally, the control module 120 controls the temperature of the electromagnetic heating element 1312 by controlling the magnitude of the voltage signal applied across the electromagnetic heating element 137 according to the temperature/voltage curve.
According to the above description, the present embodiment is different from the previous embodiment in that: the present embodiment indirectly obtains the voltage of the electromagnetic heating element 137 by detecting the voltage of the resistance connected in series with the electromagnetic heating element 137. The others are substantially the same.
As an example, referring to fig. 6, the heating circuit 130 includes:
a fifth capacitor 1310, a sixth capacitor 1311, an electromagnetic heating element 1312, and a third switch 1313.
The third switch 1313 is connected in parallel with the sixth capacitor 1311 and then connected in series with the electromagnetic heating element 1312; a first end of the fifth capacitor 1310 is connected to one end of the electromagnetic heating element 1312 far from the sixth capacitor 1311, and a second end of the fifth capacitor 1310 is respectively connected to one end of the sixth capacitor 1311 far from the electromagnetic heating element 1312 and ground.
And a detection circuit 140 for detecting an electrical signal of the electromagnetic heating element 1312.
The third switch 1313 may be a MOS transistor. When the control module 120 controls the third switch 1313 to be turned on, the dc current of the power module 110 and the ac current of the electromagnetic heating element 1312 and the fifth capacitor 1310 flow through the third switch 1313, the voltage across the sixth capacitor 1311 is 0, when the mcu controls the third switch 1313 to be turned off, the dc current of the power module 110 and the ac current of the electromagnetic heating element 1312 and the fifth capacitor 1310 charge the sixth capacitor 1311 first, and the sixth capacitor 1311 starts to discharge as the ac current enters a negative half cycle until the instantaneous value of the ac current is greater than the dc current of the power module 110, and when the sixth capacitor 1311 finishes discharging, the voltage across the sixth capacitor 1311 is 0, that is, the voltage across the third switch 1313 is 0. Then, the next period is entered, and the third switch 1313 is turned on.
The heating circuit 130 belongs to inverse class E, in one period, the third switch 1313 is turned on, the voltage on the third switch 1313 is 0, and the current is not 0; the third switch 1313 is turned off, the voltage across the third switch 1313 is not 0, and the current is 0, so no power is consumed across the third switch 1313. When the electromagnetic heating element 1312 and the fifth capacitor 1310 are always in a resonance state in an operating state, after the alternating voltage across the electromagnetic heating element 1312 passes through the detection power 140, the control module 120 may detect to obtain the alternating voltage across the electromagnetic heating element 1312 (in a specific implementation, the detection may also be performed by detecting a current).
Then, the control module 120 determines whether the electromagnetic heating element 1312 reaches the curie temperature point according to the sampled voltage signal, and when the electromagnetic heating element 1312 reaches the curie temperature point, the equivalent inductance and the equivalent resistance of the coil of the electromagnetic heating element 1312 may change significantly, and the voltage across the electromagnetic heating element 1312 may change significantly (the time when the left trough is located).
As shown in fig. 7, it is shown that an inflection point (abrupt change point) occurs in the voltage signal at the curie temperature point, and the control module 120 determines the inflection point, which indicates that the electromagnetic heating element 1312 reaches the curie temperature point. It is concluded that the voltage value at this time corresponds to the curie temperature of electromagnetic heating element 1312. After the electromagnetic heating element 1312 reaches the curie temperature point, the control module 120 controls the magnitude of the voltage signal applied to the two ends of the electromagnetic heating element 1312 by controlling the on-time (duty ratio) of the third switch 1313, and simultaneously tests the temperature of the electromagnetic heating element 1312 through a temperature measuring instrument to find a corresponding curve of the temperature and the voltage. Finally, the control module 120 controls the temperature of the electromagnetic heating element 1312 by controlling the magnitude of the voltage signal applied across the electromagnetic heating element 1312 according to the temperature/voltage curve.
As an embodiment, referring to fig. 8, based on the circuit shown in fig. 7, the heating circuit 130 further includes:
a transformer 1314 and a second resistor 1315 connected in parallel; a transformer 1314 for inducing an electrical signal of the electromagnetic heating element 1312, and a detection circuit 140 for detecting an electrical signal of the second resistor 1315.
In this embodiment, compared with the embodiment described in fig. 7, in this embodiment, a transformer 1314 and a second resistor 1315 are additionally provided, the alternating current signal on the electromagnetic heating element 1312 is converted into an alternating current voltage signal through the transformer 1314 and the second resistor 1315, then the control module 120 detects the direct current voltage signal of the second resistor 1315 through the detection circuit 140, and a detection graph is shown in fig. 9, and whether an inflection point (an abrupt change point, that is, a position corresponding to a time at which a left trough is located) appears is determined according to the direct current voltage signal, which indicates that the electromagnetic heating element 1312 reaches the curie temperature point at this time. It is concluded that the voltage value at this point corresponds to the curie temperature of the electromagnetic heating element 1312. After the electromagnetic heating element 1312 reaches the curie temperature point, the control module 120 controls the magnitude of the voltage signal applied to the two ends of the electromagnetic heating element 1312 by controlling the on-time (duty ratio) of the third switch 1313, and simultaneously tests the temperature of the electromagnetic heating element 1312 through a temperature measuring instrument to find a corresponding curve of the temperature and the voltage. Finally, the control module 120 controls the temperature of the electromagnetic heating element 1312 by controlling the magnitude of the voltage signal applied across the electromagnetic heating element 1312 according to the temperature/voltage curve.
Referring to fig. 10, fig. 10 is a schematic view of a variation curve of temperature with time according to an embodiment, and referring to fig. 3, 5, 7, and 9, it can be known from the comparison that after an inflection point (a catastrophe point) occurs in the detected electrical signal, the trend of the electrical signal is substantially synchronous with the trend of the temperature, and the variation of the two has a corresponding relationship. The present application thus provides for adjusting the temperature of the magnetic heating element in response to a variation in the electrical signal provided after it is determined that the magnetic heating element has reached its curie temperature. The aerosol-generating device employing the techniques of the present application may also not require the installation of a temperature sensor.
As an embodiment, based on the above-described embodiment, referring to fig. 11, the detection circuit 140 includes:
the rectifying module 141, the voltage dividing module 144, the following module 142 and the filtering module 143 are sequentially connected in series; the input end of the rectifying module 141 is connected to the electromagnetic heating element, the first resistor or the second resistor, and the output end of the filtering module 143 is connected to the control module 120. As another embodiment, the detection circuit 140 may also include: the rectifying module 141, the following module 142 and the filtering module 143 are sequentially connected in series; the input end of the rectifying module 141 is connected with the electromagnetic heating element, the first resistor or the second resistor, and the output end of the filtering module 143 is connected with the control module 120. Other detection circuits may also be used in the implementation, and are not limited herein.
The rectifying module 141 converts the ac signal into a dc signal, and the following module 142 is used for isolating the signal input to the following module 142 from the signal output by the following module 142, thereby avoiding the influence of the input signal. The filtering module 143 is configured to filter the noise in the signal output by the following module 142.
Based on the same inventive concept, the embodiment of the present application further provides a temperature control method for an aerosol-generating device implementing the aerosol-generating device. The solution to the problem provided by this method is similar to the solution described in the aerosol-generating device, so the specific limitations in the embodiments of the temperature control method for one or more aerosol-generating devices provided below can be referred to the limitations of the aerosol-generating device above, and are not described herein again.
In one embodiment, as shown in fig. 12, based on the above embodiment, the method includes:
Specifically, the present application may be applied to the control module described in any of the above embodiments, where the control module may directly or indirectly obtain an electrical signal of an electromagnetic heating element in the aerosol-generating device, then detect/identify the obtained electrical signal, and when it is detected that an electrical signal of the electromagnetic heating element has a sudden change, it indicates that the temperature of the electromagnetic heating element reaches the curie temperature. And then, the working time of the heating circuit in the unit period can be controlled according to the pre-stored corresponding relation, so that the magnitude of the electric signal applied to the magnetic heating element in the unit period is realized, and the temperature of the electromagnetic heating element is controlled.
Specifically, the controlling the operating time of the heating circuit according to the preset corresponding relationship to control the temperature of the electromagnetic heating element includes:
and controlling the on or off of a switch in the aerosol generating device according to a preset corresponding relation so as to control the working time of the heating circuit.
In this embodiment, the control module controls the on/off of a switch in the aerosol generating device according to a preset corresponding relationship, so as to control the operating time of the heating circuit. The specific implementation can also be controlled by other modes, for example, controlling the power module to be turned on or off to realize the same function.
According to the temperature control method of the aerosol generating device, the electric signal of the electromagnetic heating element in the aerosol generating device is detected through the detection circuit, and the characteristic that the electromagnetic heating element has the Curie temperature is utilized, so that the electromagnetic heating element can reach the Curie temperature when the detected electric signal changes suddenly, and the influence of various other factors in the using process of the aerosol generating device is avoided. After the sudden change of the electric signal of the electromagnetic heating element is detected, the working time of the heating circuit is controlled according to the corresponding relation between the electric signal variable and the temperature variable, so that the temperature of the electromagnetic heating element is controlled, and the temperature can be accurately controlled.
It should be understood that, although the steps in the flowcharts related to the embodiments as described above are sequentially displayed as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be rotated or alternated with other steps or at least a part of the steps or stages in other steps.
Based on the same inventive concept, the embodiment of the present application further provides a temperature control device of an aerosol generating device for implementing the temperature control method of the aerosol generating device. The solution to the problem provided by the device is similar to the solution described in the above-mentioned method for controlling the temperature of the aerosol-generating device, so the specific limitations in the following embodiments of one or more temperature control devices of the aerosol-generating device may refer to the limitations in the above-mentioned method for controlling the temperature of the aerosol-generating device, and are not described herein again.
In one embodiment, as shown in fig. 13, there is provided a temperature control device of an aerosol-generating device comprising:
an obtaining module 1310 for obtaining an electrical signal of an electromagnetic heating element in the aerosol-generating device;
the processing module 1320 is configured to control the operating time of the heating circuit according to a preset corresponding relationship after detecting that an electrical signal of the electromagnetic heating element changes suddenly, so as to control the temperature of the electromagnetic heating element, where the preset corresponding relationship is a corresponding relationship between an electrical signal variable and a temperature variable.
In an embodiment, the processing module 1320 is further configured to control on or off of a switch in the aerosol generating device according to a preset corresponding relationship, so as to control an operating time of the heating circuit.
The various modules in the temperature control means of the aerosol-generating device described above may be implemented in whole or in part by software, hardware and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In an embodiment, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the embodiments of the method of temperature control of any of the aerosol-generating devices described above.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high-density embedded nonvolatile Memory, resistive Random Access Memory (ReRAM), magnetic Random Access Memory (MRAM), ferroelectric Random Access Memory (FRAM), phase Change Memory (PCM), graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others. The databases referred to in various embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing based data processing logic devices, etc., without limitation.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (10)
1. An aerosol-generating device, comprising:
the device comprises a power supply module, a control module, a heating circuit and a detection circuit;
the power supply module is used for supplying energy to the heating circuit;
the control module is used for obtaining an electric signal of an electromagnetic heating element in the heating circuit through the detection circuit; and after the sudden change of the electric signal of the electromagnetic heating element is detected, controlling the working time of the heating circuit according to a preset corresponding relation so as to control the temperature of the electromagnetic heating element, wherein the preset corresponding relation is the corresponding relation between an electric signal variable and a temperature variable.
2. An aerosol-generating device according to claim 1, wherein the heating circuit comprises:
the first capacitor, the second capacitor, the electromagnetic heating element and the first switch;
the first switch is connected with the first capacitor in parallel;
the first end of the second capacitor is connected with the first end of the first capacitor, and the second end of the second capacitor is connected with the first end of the electromagnetic heating element; the first end of the second capacitor is also connected with the power supply module;
the second end of the electromagnetic heating element is respectively connected with the second end of the first capacitor and the ground;
the detection circuit is connected with the electromagnetic heating element in parallel and is used for detecting the electric signal of the electromagnetic heating element.
3. An aerosol-generating device according to claim 1, wherein the heating circuit comprises:
the first capacitor, the second capacitor, the electromagnetic heating element, the first switch and the second resistor are connected in series;
the second switch is connected with the third capacitor in parallel;
the first end of the fourth capacitor is connected with the first end of the third capacitor, and the second end of the fourth capacitor is connected with the first end of the electromagnetic heating element; the first end of the fourth capacitor is also connected with the power supply module;
the second end of the electromagnetic heating element is respectively connected with the second end of the third capacitor and the ground through the first resistor;
the detection circuit is connected with the first resistor in parallel and is used for detecting an electric signal of the first resistor;
the control module is further used for obtaining an electric signal of the electromagnetic heating element according to the electric signal of the first resistor.
4. An aerosol-generating device according to claim 1, wherein the heating circuit comprises:
a fifth capacitor, a sixth capacitor, an electromagnetic heating element and a third switch;
the third switch is connected with the sixth capacitor in parallel and then connected with the electromagnetic heating element in series;
a first end of the fifth capacitor is connected with one end, far away from the sixth capacitor, of the electromagnetic heating element, and a second end of the fifth capacitor is respectively connected with one end, far away from the electromagnetic heating element, of the sixth capacitor and the ground;
the detection circuit is used for detecting the electric signal of the electromagnetic heating element.
5. An aerosol-generating device according to claim 4, wherein the heating circuit further comprises:
the mutual inductor and the second resistor are connected in parallel;
the mutual inductor is used for inducing the electric signal of the electromagnetic heating element,
the detection circuit is used for detecting the electric signal of the second resistor.
6. An aerosol-generating device according to claim 1, wherein the detection circuit comprises:
the rectifying module, the following module and the filtering module are sequentially connected in series;
the input end of the rectifying module is connected with the electromagnetic heating element, and the output end of the filtering module is connected with the control module.
7. An aerosol-generating device according to claim 6, wherein the detection circuit further comprises:
and the voltage division module is connected between the rectification module and the following module.
8. A method of temperature control of an aerosol-generating device, the method comprising:
obtaining an electrical signal of an electromagnetic heating element in the aerosol-generating device;
and after the sudden change of the electric signal of the electromagnetic heating element is detected, controlling the working time of the heating circuit according to a preset corresponding relation so as to control the temperature of the electromagnetic heating element, wherein the preset corresponding relation is the corresponding relation between an electric signal variable and a temperature variable.
9. The method according to claim 8, wherein the controlling the operation time of the heating circuit according to the preset corresponding relationship to control the temperature of the electromagnetic heating element comprises:
and controlling the on or off of a switch in the aerosol generating device according to a preset corresponding relation so as to control the working time of the heating circuit.
10. A temperature control device for an aerosol-generating device, the device comprising:
an obtaining module for obtaining an electrical signal of an electromagnetic heating element in the aerosol-generating device;
and the processing module is used for controlling the working time of the heating circuit according to a preset corresponding relation after the sudden change of the electric signal of the electromagnetic heating element is detected so as to control the temperature of the electromagnetic heating element, wherein the preset corresponding relation is the corresponding relation between an electric signal variable and a temperature variable.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211454965.9A CN115778006A (en) | 2022-11-21 | 2022-11-21 | Aerosol generating device and temperature control method and device thereof |
| PCT/CN2023/117925 WO2024109264A1 (en) | 2022-11-21 | 2023-09-11 | Aerosol generating device, and temperature control method and device therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211454965.9A CN115778006A (en) | 2022-11-21 | 2022-11-21 | Aerosol generating device and temperature control method and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115778006A true CN115778006A (en) | 2023-03-14 |
Family
ID=85439337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211454965.9A Pending CN115778006A (en) | 2022-11-21 | 2022-11-21 | Aerosol generating device and temperature control method and device thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115778006A (en) |
| WO (1) | WO2024109264A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024109264A1 (en) * | 2022-11-21 | 2024-05-30 | 思摩尔国际控股有限公司 | Aerosol generating device, and temperature control method and device therefor |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI697289B (en) * | 2014-05-21 | 2020-07-01 | 瑞士商菲利浦莫里斯製品股份有限公司 | Aerosol-forming article, electrically heated aerosol-generating device and system and method of operating said system |
| JP2024501667A (en) * | 2020-12-23 | 2024-01-15 | フィリップ・モーリス・プロダクツ・ソシエテ・アノニム | Aerosol generator and system with induction heating device and method of operation thereof |
| CN113925223A (en) * | 2021-09-06 | 2022-01-14 | 深圳麦时科技有限公司 | Aerosol generating device and control method thereof |
| CN113907424A (en) * | 2021-09-07 | 2022-01-11 | 深圳麦时科技有限公司 | Aerosol generating device and control method thereof |
| CN114027565B (en) * | 2021-12-02 | 2023-11-17 | 湖北中烟工业有限责任公司 | Temperature control method and device for magnetic heating element and electronic equipment |
| CN114376275A (en) * | 2022-01-14 | 2022-04-22 | 深圳麦时科技有限公司 | Aerosol generating device, control method and control device thereof, and storage medium |
| CN114794592A (en) * | 2022-03-30 | 2022-07-29 | 深圳市飞雾科技有限公司 | Temperature measurement and control technology of electromagnetic smoking set |
| CN114766740A (en) * | 2022-04-28 | 2022-07-22 | 深圳麦时科技有限公司 | Temperature measuring device and method |
| CN115778006A (en) * | 2022-11-21 | 2023-03-14 | 思摩尔国际控股有限公司 | Aerosol generating device and temperature control method and device thereof |
-
2022
- 2022-11-21 CN CN202211454965.9A patent/CN115778006A/en active Pending
-
2023
- 2023-09-11 WO PCT/CN2023/117925 patent/WO2024109264A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024109264A1 (en) * | 2022-11-21 | 2024-05-30 | 思摩尔国际控股有限公司 | Aerosol generating device, and temperature control method and device therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024109264A1 (en) | 2024-05-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101795073B (en) | Method for controlling output current of flyback converter and its relative power inverter | |
| KR100930813B1 (en) | Active type constant power supplier | |
| US20150001929A1 (en) | Power transformation system | |
| CN105356729B (en) | A kind of control circuit and control method in Switching Power Supply | |
| CN103151910A (en) | Undervoltage protection circuit, under-voltage protection method and switching power supply | |
| CN103940507B (en) | Bias voltage compensating circuit | |
| WO2015010612A1 (en) | System and method for online testing of temperature of distribution transformer heat run test winding | |
| CN115778006A (en) | Aerosol generating device and temperature control method and device thereof | |
| US9425685B2 (en) | DC-DC voltage converter and conversion method | |
| CN114487563B (en) | Phase difference-based non-invasive voltage measurement method and device and voltage sensor | |
| US11668762B2 (en) | Leakage current detection circuit, method and leakage current detector | |
| CN108415500A (en) | Low voltage locking circuit and device for integrating reference voltage generating circuit | |
| US20100181967A1 (en) | Battery Charger and Associated Method | |
| CN114376275A (en) | Aerosol generating device, control method and control device thereof, and storage medium | |
| TWI550379B (en) | Switching regulator with ripple-based control and method for switching regulator with ripple-based control | |
| CN101044679B (en) | High-precision zero crossing detector and method thereof | |
| CN103630735B (en) | A kind of voltage slope change detection circuit and method | |
| JP6184436B2 (en) | Power circuit for driving creeping discharge elements | |
| JP6862877B2 (en) | Battery level measurement circuit, electronic devices and battery level measurement method | |
| CN111181152B (en) | System and method for dynamically switching loads of a current transformer circuit | |
| Li et al. | An accurate lossless current sensing approach for a DC-DC converter with online calibration | |
| CN108713286A (en) | Realize the buck-boost type controller of High Power Factor and trough switching | |
| Sun et al. | Phase/RMS maximum power point tracking for inductive energy harvesting system | |
| EP4397198A1 (en) | Control device, storage medium, computer program product, and aerosol generating device and control method therefor | |
| Vinko et al. | Soft-Start Circuit in Wireless Power Transmission System |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |