CN113080516A - Aerosol generating device, susceptor, and control method - Google Patents
Aerosol generating device, susceptor, and control method Download PDFInfo
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- CN113080516A CN113080516A CN202010016971.0A CN202010016971A CN113080516A CN 113080516 A CN113080516 A CN 113080516A CN 202010016971 A CN202010016971 A CN 202010016971A CN 113080516 A CN113080516 A CN 113080516A
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- generating device
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000443 aerosol Substances 0.000 title claims abstract description 18
- 230000005291 magnetic effect Effects 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims description 36
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 12
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- 238000007373 indentation Methods 0.000 claims description 9
- 229910052697 platinum Inorganic materials 0.000 claims description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 6
- 239000010937 tungsten Substances 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- XRBURMNBUVEAKD-UHFFFAOYSA-N chromium copper nickel Chemical compound [Cr].[Ni].[Cu] XRBURMNBUVEAKD-UHFFFAOYSA-N 0.000 claims description 5
- GOECOOJIPSGIIV-UHFFFAOYSA-N copper iron nickel Chemical compound [Fe].[Ni].[Cu] GOECOOJIPSGIIV-UHFFFAOYSA-N 0.000 claims description 5
- -1 nickel-chromium-aluminum Chemical compound 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
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- 230000000694 effects Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 9
- 241000208125 Nicotiana Species 0.000 description 4
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000391 smoking effect Effects 0.000 description 4
- 239000010965 430 stainless steel Substances 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
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- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- 229910000984 420 stainless steel Inorganic materials 0.000 description 1
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- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 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
- 229910000889 permalloy Inorganic materials 0.000 description 1
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Abstract
An embodiment of the invention provides an aerosol generating device, a susceptor and a control method, wherein the aerosol generating device comprises: a magnetic field generator; a susceptor which is penetrable by a varying magnetic field to generate heat and thereby heat the smokable material; a circuit electrically connected to the susceptor and configured to determine a temperature of the susceptor by detecting a resistance value of the susceptor and from the resistance value. According to the aerosol generating device, the sensor and the control method, the temperature of the sensor is determined by detecting the resistance of the sensor, and compared with a temperature measuring mode of a temperature sensor, the aerosol generating device, the sensor and the control method are more convenient to produce and prepare and more accurate in temperature measuring effect.
Description
Technical Field
The embodiment of the invention relates to the technical field of heating non-combustion smoking sets, in particular to an aerosol generating device, a receptor and a control method.
Background
Smoking articles (e.g., cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. Attempts have been made to replace these tobacco-burning products by making products that release compounds without burning.
An example of such a product is a heating device that releases a compound by heating rather than burning the material. For example, the material may be tobacco or other non-tobacco products, which may or may not include nicotine. In the known devices, temperature detection during heating of the tobacco products is required; examples of such products are attached to the heating member by a temperature sensor, so as to obtain the temperature of the heating member.
Disclosure of Invention
In order to solve the problem of temperature detection of a smoking article heating device in the prior art, the embodiment of the invention provides an electromagnetic induction type aerosol generating device which is convenient to produce and accurately detect temperature and a control method.
Based on the above, an embodiment of the invention provides an aerosol-generating device configured to heat smokable material to generate an aerosol, comprising:
a chamber for receiving smokable material;
a magnetic field generator configured to generate a varying magnetic field;
a susceptor configured to be penetrated by the varying magnetic field to generate heat to thereby heat smokable material received within the chamber;
a circuit, comprising:
a first power supply module configured to provide an alternating current to the magnetic field generator to cause the magnetic field generator to generate a changing magnetic field;
a second power supply module configured to provide a direct current detection voltage to the susceptor;
a detection module configured to determine a temperature of the susceptor by detecting a resistance value of the susceptor at the detection voltage and from the resistance value.
In a preferred implementation, the susceptor comprises:
a susceptor portion configured to be penetrated by the varying magnetic field to generate heat to heat smokable material received within the chamber;
an electrical connection portion disposed on the sensing portion and configured to be electrically connected to the electrical circuit.
In a preferred implementation, the electrical connection portion has a positive temperature coefficient of resistance;
the detection module is configured to determine the temperature of the susceptor by detecting a combined resistance value of the susceptor portion and the electrical connection portion and from the combined resistance value.
In a preferred implementation, the electrical connection portion comprises at least one of nickel-iron-copper alloy, nickel-chromium-aluminum alloy, nickel-chromium-copper alloy, platinum, or tungsten.
In a preferred implementation, the electrical connection portion comprises a first section and a second section arranged in sequence, and the temperature coefficient of resistance of the first section is higher than that of the second section; wherein,
a first section of the electrical connection portion is connected to the sensing portion;
the second section of the electrical connection portion is electrically connected to the circuit.
In a preferred implementation, the first portion comprises at least one of nickel-iron-copper alloy, nickel-chromium-aluminum alloy, nickel-chromium-copper alloy, platinum, or tungsten;
the second portion includes at least one of gold, silver, or copper.
In a preferred embodiment, the sensing portion is provided with at least one notch extending in the length direction.
In a preferred embodiment, the sensing portion is in the form of a pin or blade extending axially along the chamber and having first and second lengthwise opposed ends; wherein,
the first end is configured to be inserted into a smokable material;
the notch is arranged by extending from the second end to the first end.
In a preferred implementation, the sensing portion comprises a first portion and a second portion respectively located on two sides of the notch along the width direction;
the electrical connection portion includes a first electrical connection portion and a second electrical connection portion; wherein the first electrical connection portion is connected to the first portion and the second electrical connection portion is connected to the second portion.
In a preferred implementation, the susceptor is tubular extending axially along and surrounding the chamber and has first and second lengthwise opposed ends;
the notches comprise a first notch and a second notch, and the first notch and the second notch are both configured to extend from the first end to the second end or from the second end to the first end, so that the sensing part is divided into a first part and a second part which are positioned between the first notch and the second notch and are sequentially arranged along the circumferential direction;
the electrical connection portion includes a first electrical connection portion and a second electrical connection portion; wherein the first electrical connection portion is connected to the first portion and the second electrical connection portion is connected to the second portion.
In a preferred implementation, the first electrical connection portion is connected to the first portion at a location proximate to the open end of the first gap;
the second electrical connection section is connected to the second section at a location proximate the open end of the second notch.
In a preferred embodiment, the susceptor portion is tubular extending axially along and around the chamber and has first and second lengthwise opposite ends;
the notches include at least one first notch extending from the first end toward the second end and at least one second notch extending from the second end toward the first end.
In a preferred implementation, the first and second indentations are configured to be alternately arranged in a circumferential direction of the susceptor portion.
In a preferred implementation, the electrical connection portion comprises a first electrical connection portion and a second electrical connection portion; wherein,
the first electric connection part is connected with the sensing part at the position close to the opening of the first notch, and the second electric connection part is connected with the sensing part at the position close to the opening of the second notch.
In a preferred embodiment, the sensing portion is in the form of a pin or blade extending axially along the chamber and having first and second lengthwise opposed ends; wherein,
the first end is configured to be inserted into a smokable material;
the electrical connection portion is connected to the sensing portion through the second end.
In a preferred embodiment, the susceptor portion is tubular extending axially along and around the chamber and has first and second lengthwise opposite ends;
the electrical connection portion includes a first electrical connection portion and a second electrical connection portion; wherein the first electrical connection part is connected to the sensing part at the position of the first end and the second electrical connection part is connected to the sensing part at the position of the second end.
In a preferred implementation, the detection module comprises:
and the sampling input end of the operational amplifier is coupled with the sensor, and the voltage value of the sensor is received through the sampling input end.
In a preferred implementation, the battery further comprises a direct current cell for supplying power; the reference input end of the operational amplifier is connected with the voltage output end of the battery cell; or, the reference input end of the operational amplifier is grounded.
An embodiment of the present invention further provides a method of controlling aerosol generation by an aerosol-generating device, the aerosol-generating device including:
a chamber for receiving at least a portion of the smokable material;
a magnetic field generator configured to generate a varying magnetic field;
a susceptor configured to be penetrated by the varying magnetic field to generate heat to thereby heat at least a portion of smokable material received within the chamber;
the method comprises the following steps:
providing a dc detection voltage to the susceptor;
measuring a resistance value of the susceptor at the detection voltage and determining a temperature of the susceptor from the resistance value;
based on the temperature of the susceptor, the alternating current provided to the magnetic field generator is adjusted to cause the magnetic field generator to generate a changing magnetic field.
In a preferred implementation, the adjusting the alternating current provided to the magnetic field generator comprises:
adjusting at least one of a power, a frequency, or a duty cycle of an alternating current provided to the magnetic field generator.
An embodiment of the invention also provides a susceptor for an aerosol-generating device, comprising:
a sensing portion configured to be penetrable by the varying magnetic field to generate heat;
and an electrical connection portion provided on the sensing portion so that a direct current detection voltage can be supplied to the sensing portion through the electrical connection portion, thereby measuring a resistance value of the sensing portion at the direct current detection voltage and determining a temperature of the susceptor from the resistance value.
The electrical connection portion has a forward temperature coefficient of resistance.
In a preferred implementation, the electrical connection portion comprises a first portion and a second portion, and the first portion has a higher temperature coefficient of resistance than the second portion; wherein,
the first part of the electrical connection portion is connected to the sensing portion.
In a preferred embodiment, the sensing portion is provided with at least one notch extending in the length direction.
In a preferred embodiment, the sensing portion is in the form of a pin or blade having first and second opposite ends; wherein,
the second end is configured to connect with the aerosol-generating device;
the notch is arranged by extending from the second end to the first end.
In a preferred implementation, the sensing portion comprises a first portion and a second portion respectively located on two sides of the notch along the width direction;
the electrical connection portion includes a first electrical connection portion and a second electrical connection portion; wherein the first electrical connection portion is connected to the first portion and the second electrical connection portion is connected to the second portion.
In a preferred embodiment, the susceptor is tubular in shape extending in a length direction and having opposite first and second ends;
the notches comprise a first notch and a second notch, and the first notch and the second notch are both configured to extend from the first end to the second end or from the second end to the first end, so that the sensing part is divided into a first part and a second part which are positioned between the first notch and the second notch and are sequentially arranged along the circumferential direction;
the electrical connection portion includes a first electrical connection portion and a second electrical connection portion; wherein the first electrical connection portion is connected to the first portion and the second electrical connection portion is connected to the second portion.
In a preferred implementation, the first electrical connection portion is connected to the first portion at a location proximate to the open end of the first gap;
the second electrical connection section is connected to the second section at a location proximate the open end of the second notch.
In a preferred embodiment, the susceptor portion is tubular in shape extending lengthwise and having opposite first and second ends;
the notches include at least one first notch extending from the first end toward the second end and at least one second notch extending from the second end toward the first end.
In a preferred implementation, the first and second indentations are configured to be alternately arranged in a circumferential direction of the susceptor portion.
In a preferred implementation, the electrical connection portion comprises a first electrical connection portion and a second electrical connection portion; wherein,
the first electric connection part is connected with the sensing part at the position close to the opening of the first notch, and the second electric connection part is connected with the sensing part at the position close to the opening of the second notch.
In a preferred embodiment, the sensing portion is provided in the form of a pin or blade having first and second lengthwise opposed ends; wherein,
the second end is configured to connect with the aerosol-generating device;
the electrical connection portion is connected to the sensing portion through the second end.
In a preferred embodiment, the susceptor portion is tubular in shape extending lengthwise and having opposite first and second ends;
the electrical connection portion includes a first electrical connection portion and a second electrical connection portion; wherein the first electrical connection part is connected to the sensing part at the position of the first end and the second electrical connection part is connected to the sensing part at the position of the second end.
According to the aerosol generating device, the sensor and the control method, the temperature of the sensor is determined by detecting the resistance of the sensor, and compared with a temperature measuring mode of a temperature sensor, the aerosol generating device, the sensor and the control method are more convenient to produce and prepare and more accurate in temperature measuring effect.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Figure 1 is a schematic diagram of an aerosol-generating device provided by an embodiment;
FIG. 2 is a schematic view of one embodiment of the susceptor of FIG. 1;
figure 3 is a schematic view of a susceptor provided in yet another embodiment;
FIG. 4 is a block diagram of circuitry provided by one embodiment;
FIG. 5 is a schematic diagram of a second power supply module and a detection module of the circuit of FIG. 4;
figure 6 is a schematic view of a susceptor provided in yet another embodiment;
figure 7 is a schematic view of a susceptor provided in accordance with yet another embodiment;
figure 8 is a schematic view of a susceptor provided in yet another embodiment;
fig. 9 is a schematic diagram of a first conductive pin according to yet another embodiment;
figure 10 is a schematic illustration of a method of detecting susceptor temperature according to one embodiment.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and detailed description.
An embodiment of the present invention provides an aerosol-generating device, the structure of which can be seen in fig. 1, including:
a chamber within which smokable material a is removably received;
an inductance coil L for generating a varying magnetic field under an alternating current;
a susceptor 30, at least a portion of which extends within the chamber and is configured to inductively couple with the inductor L to generate heat when penetrated by the varying magnetic field to heat the smokable material a, such as a tobacco rod, to volatilise at least one component of the smokable material a to form an aerosol for smoking;
the battery cell 10 is a rechargeable direct current battery cell and can output direct current;
the circuit 20, which is electrically connected to the rechargeable battery cell 10 by a suitable electrical connection, is used to convert the direct current output from the battery cell 10 into an alternating current with a suitable frequency, and then supply the alternating current to the inductance coil L.
The inductor L may comprise a helically wound cylindrical inductor coil, as shown in fig. 1, depending on the arrangement in use of the product. The helically wound cylindrical inductor L may have a radius r in the range of about 5mm to about 10mm, and in particular the radius r may be about 7 mm. The length of the helically wound cylindrical inductor L may be in the range of about 8mm to about 14mm, with the number of turns of the inductor L being in the range of about 8 to 15 turns. Accordingly, the internal volume may be about 0.15cm3To about 1.10cm3Within the range of (1).
According to the preferred embodiment shown in fig. 1, the inductor coil L is a helical coil extending in the axial direction of the chamber and arranged around the chamber.
In a more preferred implementation, the frequency of the alternating current supplied by the circuit 20 to the inductor L is between 80KHz and 400 KHz; more specifically, the frequency may be in the range of approximately 200KHz to 300 KHz.
In a preferred embodiment, the battery cell 10 provides a dc supply voltage in a range from about 2.5V to about 9.0V, and the battery cell 10 provides a dc current with an amperage in a range from about 2.5A to about 20A.
In the preferred embodiment shown in fig. 1 and 2, the susceptor 30 is in the form of a sheet extending in the axial direction of the chamber, and may have a length of about 12 millimeters, a width of about 4 millimeters, and a thickness of about 50 micrometers, and may be made of grade 430 stainless steel (SS 430). As an alternative embodiment, the susceptor 30 may have a length of about 12 millimeters, a width of about 5 millimeters, and a thickness of about 50 micrometers, and may be made of grade 430 stainless steel (SS 430). Correspondingly, the susceptor 30 may also be in a pin or needle-like configuration.
Or in yet another preferred embodiment, the susceptor 30a may also be configured in a cylindrical shape, as shown in fig. 3; the inner space is arranged, in use, to receive smokable material a and to generate an aerosol for inhalation by means of heating the outer periphery of the smokable material a. These susceptors may also be made from grade 420 stainless steel (SS420), as well as iron-nickel containing alloy materials such as permalloy.
With further reference to the preferred embodiment shown in fig. 2, the susceptor 30 is provided at both ends with electrically conductive pins, in particular a first pin 31 and a second pin 32, respectively, for connecting the susceptor 30 to the circuit 20. In operation, susceptor 30 is fabricated to have a positive temperature resistivity based on the use of a material having excellent magnetic permeability as described above for susceptor 30, and the temperature of susceptor 30 can be determined by calculating its effective resistance upon application of a sensed electrical signal to susceptor 30 after it is coupled to electrical circuit 20 in use.
In particular, to enable detection of the effective resistance of the above susceptor 30, the configuration of the circuit 20 may be seen in one embodiment in fig. 4-5; the method comprises the following steps:
an MCU controller 21 as a controller for controlling the operation of each functional module;
the first power supply module 22 may be implemented by using a commonly used DC/AC inverter or LC oscillator, and the like, and is configured to convert a direct current of the battery cell 10 into an alternating current and supply the alternating current to the inductance coil L, so that the inductance coil L generates an alternating magnetic field;
a second power supply module 23 for supplying a dc detection voltage to the susceptor 30;
the detection module 24 is used for detecting the resistance value of the receptor 30 under the direct current detection voltage and determining the temperature of the receptor 30 through the resistance value.
Specifically, as shown in fig. 5, an embodiment of the second power supply module 23 and the detection module 24 may be implemented, where the second power supply module 23 forms a voltage dividing circuit by a standard voltage dividing resistor R1 connected in series with the susceptor 30, and is respectively connected to the voltage output end of the battery cell 10 and the ground, so as to provide a suitable detection voltage for the susceptor 30;
the detection module 24 further collects the voltage of the sensor 30 through a sampling terminal in + of an operational amplifier U, and obtains the voltage of the sensor 30 through comparison calculation with the reference voltage of the reference terminal in-. The calculation result is fed back to the MCU controller 21, and the effective resistance of the susceptor 30 can be calculated by the MCU controller 21 according to the proportional relationship of the standard voltage dividing resistor R1. The actual temperature of the susceptor 30 may further be determined based on the temperature coefficient of resistance.
In a variant implementation, the mode of the operational amplifier U reference terminal in-provided by the output terminal of the battery cell 20 in fig. 4 may be changed to a mode of direct grounding, and then the grounded voltage is used as a reference voltage for comparison calculation.
In a further preferred embodiment, in order to increase the resistance value detectable by the susceptor 30, as shown in fig. 6, the blade-like susceptor 30b is provided with at least one notch 33b extending in the longitudinal direction; during the detection process, when the susceptor 30b is detected through the first and second leads 31b and 32b, the current passing through the susceptor 30b is in the form of an arrow shown in fig. 6. By providing the notches 33b in a row, the cross-sectional area of the current of the susceptor 30b is reduced, and the path distance of the current is increased, so that the resistance detected by the susceptor 30 can be increased. Meanwhile, as can be seen from fig. 6, in order to facilitate smooth insertion of the upper end portion of the blade-shaped susceptor 30b into the smokable material a for heating without affecting the upper end portion, the first pins 31b and the second pins 32b are connected to the susceptor 30b through the lower end portion of the susceptor 30b shown in fig. 5.
Or in the preferred embodiment shown in fig. 7, the tubular susceptor 30c is likewise provided with at least one notch 33c extending in the axial direction; furthermore, the notch 33c is used to guide the current path during the detection process, so that the susceptor 30c can have a higher detectable resistance value when measuring the temperature through the first pin 31c and the second pin 32c, thereby improving the accuracy of the temperature detection result. And as can be seen from fig. 7, for the resistance value of the susceptor 30c in a tubular shape for easy lift detection, the first leg 31c and the second leg 32c are connected to the susceptor 30c at positions at both ends of the susceptor 30c in the length direction, respectively.
It can of course be seen further from fig. 7 that when there are a plurality of indentations 33c, the arrangement of these indentations 33c is different, in particular a first indentation 331c extending lengthwise from the upper end of the susceptor 30c and a second indentation 332c extending lengthwise from the upper end of the susceptor 30c, so as to have different opening orientations; and when there are a plurality of the notches 33c, the first notches 331c and the second notches 332c are alternately arranged in the circumferential direction of the susceptor 30c, so that the current passing through the susceptor 30c during the sensing has a winding current path as shown by arrows in fig. 7, thereby increasing the magnitude of the sensed resistance value.
Or in a further variant, as shown in fig. 8, the susceptor 30d has a tubular shape and has two identical indentations 33d extending from the lower end towards the upper end, so as to divide the susceptor 30d into two parts, namely a left half 310d and a right half 320d in fig. 7, located between the two indentations 33d in the circumferential direction; while connecting the first and second leads 31d and 32d to the left and right halves 310d and 320d, respectively, at positions near or at the lower ends thereof, thereby forming a circuitous current path as shown by arrows in fig. 7.
In yet another preferred embodiment, the first pins 31/31a/31b/31c and the second pins 32/32a/32b/32c are made of a material having a temperature coefficient of resistance, such as common thermocouple wires including nickel-iron-copper alloy, nickel-chromium-aluminum alloy, nickel-chromium-copper alloy, platinum, tungsten, etc.; then during testing, the combined resistance values of the susceptors 30/30a/30b/30c and the first pins 31/31a/31b/31c and the second pins 32/32a/32b/32c are tested, which enables the resistance and temperature sensing results to be improved by amplifying the resistance of the susceptors 30/30a/30b/30c during testing. In practice, since the first pins 31/31a/31b/31c and/or the second pins 32/32a/32b/32c with temperature coefficient of resistance are used to amplify the resistance of the susceptors 30/30a/30b/30c, it is necessary that the first pins 31/31a/31b/31c and/or the second pins 32/32a/32b/32c are of the same type; for example, the susceptor 30/30a/30b/30c having the above ferromagnetic material has a positive temperature coefficient of resistance, and the resistance increases when the temperature increases, and the first lead 31/31a/31b/31c and/or the second lead 32/32a/32b/32c also has a positive temperature coefficient of resistance.
In a more preferred embodiment, in order to avoid the temperature difference between the first leads 31/31a/31b/31c and the second leads 32/32a/32b/32c and the susceptors 30/30a/30b/30c, the first leads 31/31a/31b/31c and the second leads 32/32a/32b/32c are welded to the susceptors 30/30a/30b/30c by an ultrasonic butt welding process during the preparation process, so that the difference is eliminated as much as possible.
Or in a more preferred implementation, the first lead 31 is made of two sections of materials, specifically, as shown in fig. 9, and includes a first portion 311 and a second portion 312 sequentially arranged along the length direction; the first portion 311 is made of a material with a relatively high temperature coefficient of resistance, for example, the common thermocouple wires include nickel-iron-copper alloy, nickel-chromium-aluminum alloy, nickel-chromium-copper alloy, platinum, tungsten, and the like, and are used for amplifying the resistance of the susceptor 30/30a/30b/30c during detection, so as to improve the resistance and the temperature detection result; the second portion 312 is made of a material with low resistivity, so that the temperature of the second portion 312 is lower than that of the first portion 311 in use, thereby preventing thermal damage to the subsequent bonding circuit 20 and the like caused by high temperature; further, the second portion 312 is required to have high electrical conductivity and soldering properties, to facilitate good soldering with the circuit 20, and suitable materials such as gold, silver, copper, etc.
An embodiment of the present invention also proposes a method of controlling aerosol-generating device having the above susceptor 30/30a/30b/30c to generate aerosol, as shown in fig. 10, comprising the steps of:
s10, providing an alternating current to the inductor L through the first power supply module 22, and exciting the inductor L as a magnetic field generator to generate a changing magnetic field, so that the susceptor 30 generates heat to heat the smokable material a;
s20, supplying the direct current detection voltage to the susceptor 30 through the second power supply module 23;
s30 measuring the resistance value of the susceptor 30 at the dc detection voltage and determining the temperature of the susceptor 30 from the resistance value;
s40, based on the temperature of the susceptor 30 determined above, at least one of the power, frequency or duty cycle of the alternating current supplied to the inductor L is adjusted, thereby adjusting the generated alternating magnetic field to maintain the susceptor 30 at a preset target temperature.
The aerosol generating device and the susceptor have the characteristic that the susceptor has the resistance temperature coefficient, so that the temperature of the susceptor can be determined by detecting the resistance of the susceptor in work; compared with a temperature measurement mode of a temperature sensor, the production and the preparation are more convenient, and the temperature measurement effect is more accurate.
It should be noted that the preferred embodiments of the present invention are shown in the specification and the drawings, but the present invention is not limited to the embodiments described in the specification, and further, it will be apparent to those skilled in the art that modifications and changes can be made in the above description, and all such modifications and changes should fall within the protection scope of the appended claims.
Claims (21)
1. An aerosol-generating device configured to heat smokable material to generate an aerosol, comprising:
a chamber for receiving smokable material;
a magnetic field generator configured to generate a varying magnetic field;
a susceptor configured to be penetrable by the varying magnetic field to heat smokable material received within the chamber;
a circuit, comprising:
a first power supply module configured to provide an alternating current to the magnetic field generator to cause the magnetic field generator to generate a changing magnetic field;
a second power supply module configured to provide a direct current detection voltage to the susceptor;
a detection module configured to determine a temperature of the susceptor by detecting a resistance value of the susceptor at the detection voltage and from the resistance value.
2. An aerosol-generating device according to claim 1, wherein the susceptor comprises:
a susceptor portion configured to be penetrated by the varying magnetic field to generate heat to heat smokable material received within the chamber;
an electrical connection portion disposed on the sensing portion and configured to be electrically connected to the electrical circuit.
3. The aerosol-generating device of claim 2, wherein the electrical connection portion has a positive temperature coefficient of resistance;
the detection module is configured to determine the temperature of the susceptor by detecting a combined resistance value of the susceptor portion and the electrical connection portion and from the combined resistance value.
4. An aerosol-generating device according to claim 3, wherein the electrical connection comprises at least one of NiFeCu, NiCrAl, NiCrCu, platinum, or tungsten.
5. The aerosol-generating device of claim 2, wherein the electrical connection comprises a first section and a second section arranged in series, and wherein the first section has a higher temperature coefficient of resistance than the second section; wherein,
a first section of the electrical connection portion is connected to the sensing portion;
the second section of the electrical connection portion is electrically connected to the circuit.
6. The aerosol-generating device of claim 5, wherein the first portion comprises at least one of a nickel-iron-copper alloy, a nickel-chromium-aluminum alloy, a nickel-chromium-copper alloy, platinum, or tungsten;
the second portion includes at least one of gold, silver, or copper.
7. An aerosol-generating device according to any one of claims 2 to 6, wherein the sensing portion is provided with at least one notch extending in the length direction.
8. An aerosol-generating device according to claim 7 in which the sensing portion is in the form of a pin or blade extending axially of the chamber and having first and second lengthwise opposed ends; wherein,
the first end is configured to be inserted into a smokable material;
the notch is arranged by extending from the second end to the first end.
9. An aerosol-generating device according to claim 8, wherein the sensing portion comprises first and second portions which are respectively located on either side of the gap in the width direction;
the electrical connection portion includes a first electrical connection portion and a second electrical connection portion; wherein the first electrical connection portion is connected to the first portion and the second electrical connection portion is connected to the second portion.
10. An aerosol-generating device according to claim 7 in which the susceptor is tubular extending axially along and around the chamber and has first and second lengthwise opposed ends;
the notches comprise a first notch and a second notch, and the first notch and the second notch are both configured to extend from the first end to the second end or from the second end to the first end, so that the sensing part is divided into a first part and a second part which are positioned between the first notch and the second notch and are sequentially arranged along the circumferential direction;
the electrical connection portion includes a first electrical connection portion and a second electrical connection portion; wherein the first electrical connection portion is connected to the first portion and the second electrical connection portion is connected to the second portion.
11. The aerosol-generating device of claim 10, wherein the first electrical connection portion connects to the first portion at a location proximate to the open end of the first notch;
the second electrical connection section is connected to the second section at a location proximate the open end of the second notch.
12. An aerosol-generating device according to claim 7, wherein the sensing portion is tubular extending axially along and around the chamber and has first and second lengthwise opposed ends;
the notches include at least one first notch extending from the first end toward the second end and at least one second notch extending from the second end toward the first end.
13. The aerosol-generating device of claim 12, wherein the first and second indentations are configured to alternate in a circumferential direction of the feel portion.
14. The aerosol-generating device of claim 13, wherein the electrical connection portion comprises a first electrical connection portion and a second electrical connection portion; wherein,
the first electric connection part is connected with the sensing part at the position close to the opening of the first notch, and the second electric connection part is connected with the sensing part at the position close to the opening of the second notch.
15. An aerosol-generating device according to any one of claims 2 to 6 in which the sensing portion is in the form of a pin or blade extending axially of the chamber and having first and second lengthwise opposed ends; wherein,
the first end is configured to be inserted into a smokable material;
the electrical connection portion is connected to the sensing portion through the second end.
16. An aerosol-generating device according to any one of claims 2 to 6, wherein the sensing portion is tubular extending axially along and around the chamber and has first and second lengthwise opposed ends;
the electrical connection portion includes a first electrical connection portion and a second electrical connection portion; wherein the first electrical connection part is connected to the sensing part at the position of the first end and the second electrical connection part is connected to the sensing part at the position of the second end.
17. An aerosol-generating device according to any one of claims 1 to 6, wherein the detection module comprises:
and the sampling input end of the operational amplifier is coupled with the sensor, and the voltage value of the sensor is received through the sampling input end.
18. The aerosol-generating device of claim 17, further comprising a dc electrical core for supplying power; the reference input end of the operational amplifier is connected with the voltage output end of the battery cell; or, the reference input end of the operational amplifier is grounded.
19. A method of controlling aerosol-generating device production of an aerosol, the aerosol-generating device comprising:
a chamber for receiving the smokable material;
a magnetic field generator configured to generate a varying magnetic field;
a susceptor configured to be penetrated by the varying magnetic field to generate heat to thereby heat smokable material received within the chamber;
characterized in that the method comprises the following steps:
providing a dc detection voltage to the susceptor;
measuring a resistance value of the susceptor at the detection voltage and determining a temperature of the susceptor from the resistance value;
based on the temperature of the susceptor, the alternating current provided to the magnetic field generator is adjusted to cause the magnetic field generator to generate a changing magnetic field.
20. The method of claim 19, wherein the adjusting the alternating current provided to the magnetic field generator comprises:
adjusting at least one of a power, a frequency, or a duty cycle of an alternating current provided to the magnetic field generator.
21. A susceptor for an aerosol-generating device, comprising:
a sensing portion configured to be penetrable by the varying magnetic field to generate heat;
and an electrical connection portion provided on the sensing portion so that a direct current detection voltage can be supplied to the sensing portion through the electrical connection portion, thereby measuring a resistance value of the sensing portion at the direct current detection voltage and determining a temperature of the susceptor from the resistance value.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010016971.0A CN113080516A (en) | 2020-01-08 | 2020-01-08 | Aerosol generating device, susceptor, and control method |
| US17/754,803 US20240023620A1 (en) | 2019-10-16 | 2020-10-16 | Aerosol generation device and susceptor |
| PCT/CN2020/121617 WO2021073617A1 (en) | 2019-10-16 | 2020-10-16 | Gas mist generation device and receptor |
| EP20875927.4A EP4046509A4 (en) | 2019-10-16 | 2020-10-16 | Gas mist generation device and receptor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010016971.0A CN113080516A (en) | 2020-01-08 | 2020-01-08 | Aerosol generating device, susceptor, and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113080516A true CN113080516A (en) | 2021-07-09 |
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ID=76663359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010016971.0A Pending CN113080516A (en) | 2019-10-16 | 2020-01-08 | Aerosol generating device, susceptor, and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113080516A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114223963A (en) * | 2021-12-24 | 2022-03-25 | 重庆江陶科技有限公司 | Resistance heater for aerosol-generating device and aerosol-generating device |
| WO2023051729A1 (en) * | 2021-09-29 | 2023-04-06 | 深圳市合元科技有限公司 | Aerosol generating device and heater for aerosol generating device |
-
2020
- 2020-01-08 CN CN202010016971.0A patent/CN113080516A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023051729A1 (en) * | 2021-09-29 | 2023-04-06 | 深圳市合元科技有限公司 | Aerosol generating device and heater for aerosol generating device |
| CN114223963A (en) * | 2021-12-24 | 2022-03-25 | 重庆江陶科技有限公司 | Resistance heater for aerosol-generating device and aerosol-generating device |
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