CN111165907B - Method of controlling heating of an aerosol-generating article by an aerosol-generating device - Google Patents
Method of controlling heating of an aerosol-generating article by an aerosol-generating device Download PDFInfo
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- CN111165907B CN111165907B CN202010110405.6A CN202010110405A CN111165907B CN 111165907 B CN111165907 B CN 111165907B CN 202010110405 A CN202010110405 A CN 202010110405A CN 111165907 B CN111165907 B CN 111165907B
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- 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
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- 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
Abstract
The invention relates to a method for controlling and heating an aerosol generating product by an aerosol generating device, which utilizes a first resistance heating element and a second resistance heating element to detect the temperature of the other side correspondingly, so that the temperature of a heat conductor can be finally and accurately stabilized at the required temperature, the problem of inaccurate temperature measurement is solved, and the phenomenon of temperature drift of the heat conductor 1 is avoided.
Description
Technical Field
The present invention relates to an aerosol-generating device for controlling a method of heating an aerosol-generating article.
Background
The traditional cigarette needs to be ignited and combusted by open fire to generate tobacco smoke, and thousands of mixed substances harmful to human bodies can be released by tobacco in the high-temperature and cracking processes. And the low-temperature heating smoking set can effectively reduce the generation of harmful substances and is healthier. When the low-temperature cigarette is used, a cigarette body is inserted into a heating pipe of a smoking set or a heating sheet is inserted into the cigarette body, then a power supply is electrified to enable the heating pipe/the heating sheet to generate heat, and the cigarette body is heated to generate smoke.
In the prior art, a heating pipe or a heating sheet of a low-temperature heating non-combustion smoking set realizes detection and control of the temperature by using a thermistor or a temperature control sensor so as to avoid release of harmful substances at high temperature. However, this method is prone to cause inaccurate temperature measurement, and the temperature of the heating tube or the heating sheet is prone to drift.
Disclosure of Invention
Based on this, there is a need to provide an aerosol-generating device with a method of controlling heating of an aerosol-generating article.
A method of controlling heating of an aerosol-generating device comprising a power source and a thermally conductive body for conducting heat to an aerosol-generating article, the body being overlaid by at least a first and a second resistive heating element, the method of controlling heating of an aerosol-generating device comprising the steps of controlling the power source to supply power to at least one of the second resistive heating elements for a first predetermined time and controlling the power source to supply power to at least one of the first resistive heating elements for a second predetermined time, wherein,
the step of controlling the power supply to at least one of said second resistive heating elements at a first predetermined time further comprises:
measuring at least once a first resistivity of at least one of said first resistive heating elements;
deriving a first temperature value from the measured first resistivity after each measurement, the first temperature value being used to indicate an actual temperature of a second resistive heating element to be controlled for power supply;
comparing the first temperature value with a preset temperature after deriving the first temperature value each time;
after each comparison, adjusting the electric energy supplied by the power supply to the second resistance heating element controlled to supply power so as to enable the first temperature value to be lower than the preset temperature;
controlling the power supply to supply power to at least one of the first resistive heating elements at a second predetermined time further comprises:
measuring at least once a second resistivity of at least one of said second resistive heating elements;
deriving a second temperature value from the measured second resistivity after each measurement, the second temperature value being used to mark an actual temperature of the first resistive heating element being controlled to supply power;
comparing the second temperature value with a preset temperature after deriving the second temperature value each time;
after each comparison, the power supplied by the power supply to the first resistance heating element to be powered is adjusted so that the second temperature value is below the preset temperature.
In one embodiment, the step of comparing the first temperature value with the preset temperature each time the first temperature value is derived further includes: calculating a difference value between the first temperature value and a preset temperature and setting the difference value as a first difference value;
the step of comparing the second temperature value with a preset temperature after deriving the second temperature value each time further comprises: and calculating the difference value between the second temperature value and the preset temperature and setting the difference value as a second difference value.
In one embodiment, the step of adjusting the power supplied by the power source to the second resistance heating element to be powered by the power source after each comparison so that the first temperature value is below the preset temperature further comprises:
when the first temperature value is larger than or equal to the preset temperature, stopping or reducing the electric energy supplied to the second resistance heating element controlled to supply power by the power supply;
when the first temperature value is less than the preset temperature, a first difference value between the first temperature value and the preset temperature is in the following condition: if the first preset difference is smaller than or equal to the first difference and smaller than or equal to the second preset difference, keeping the electric energy supplied by the power supply to the second resistance heating element controlled to supply power unchanged; if the first difference is larger than the second preset difference, increasing the electric energy supplied by the power supply to the second resistance heating element controlled to supply power; if the first difference is less than the first preset difference, reducing the electric energy supplied by the power supply to the second resistance heating element controlled to supply power;
the step of adjusting the power supplied by the power source to the first resistive heating element to be powered after each comparison to bring the second temperature value below the predetermined temperature further comprises:
when the second temperature value is larger than or equal to the preset temperature, stopping or reducing the electric energy supplied to the first resistance heating element controlled to supply power by the power supply;
when the second temperature value is less than the preset temperature, a second difference value between the second temperature value and the preset temperature is in the following condition: if the first preset difference is smaller than or equal to the second difference and smaller than or equal to the second preset difference, keeping the electric energy supplied by the power supply to the first resistance heating element which is controlled to supply power unchanged; if the second difference is larger than the second preset difference, increasing the electric energy supplied by the power supply to the first resistance heating element controlled to supply power; and if the second difference is less than the first preset difference, reducing the electric energy supplied by the power supply to the first resistance heating element controlled to supply power.
In one embodiment, the step of controlling the power supply to supply power to at least one of the second resistive heating elements at a first predetermined time alternates with the step of controlling the power supply to supply power to at least one of the first resistive heating elements at a second predetermined time.
In one embodiment, the second preset time is when the first temperature value reaches a value close to the preset temperature, and the first preset time is when the second temperature value reaches a value close to the preset temperature.
In one embodiment, the second preset time is when a first difference between the first temperature value and the preset temperature reaches below 10 ℃; the first preset time is when a second difference between the second temperature value and the preset temperature is less than 10 ℃.
In one embodiment, the step of measuring at least once a first resistivity of at least one of the first resistive heating elements further comprises: when the number of times of measuring the first resistivity of the first resistive heating member is plural, setting an interval time between a next measurement of the first resistivity of the first resistive heating member and a previous measurement of the first resistivity of the first resistive heating member as a first interval time, the first interval time being constant, or the larger the first difference value is, the longer the first interval time is;
the step of measuring at least once a second resistivity of at least one of said second resistive heating elements further comprises: when the number of times of measuring the second resistivity of the second resistance heating member is plural times, an interval time between the next measurement of the second resistivity of the second resistance heating member and the previous measurement of the second resistivity of the second resistance heating member is set as a second interval time, and the second interval time is fixed and does not change, or the second interval time is longer as the second difference value is larger.
In one embodiment, the aerosol-generating article comprises a plurality of volatile compounds, and the predetermined temperature satisfies at least one of the following two conditions: the predetermined temperature is equal to or less than the minimum release temperature of at least one of the volatile compounds in the aerosol-generating article, and the predetermined temperature is equal to or less than the temperature at which heating of the aerosol-generating article generates an aerosol but does not cause a combustion event.
In one embodiment, the step of adjusting the power supplied by the power supply to the controlled second resistive heating element after each comparison to bring the first temperature value below the predetermined temperature comprises adjusting the power supplied by the power supply to the controlled second resistive heating element after each comparison to bring the first temperature value within a predetermined range below the predetermined temperature;
the step of adjusting the power supplied by the power supply to the controlled powered first resistive heating element after each comparison to bring the second temperature value below the predetermined temperature comprises adjusting the power supplied by the power supply to the controlled powered first resistive heating element after each comparison to bring the second temperature value within a predetermined range below the predetermined temperature.
In one embodiment, each of the first resistive heating elements and each of the second resistive heating elements respectively overlie an outer wall of the heat conductor; or, the heat conductor is in a hollow tubular shape, and each first resistance heating element and each second resistance heating element are respectively covered on the inner wall of the heat conductor; or, the heat conductor is in a hollow tubular shape, each first resistance heating element is arranged on the outer wall of the heat conductor in a covering mode, and each second resistance heating element is arranged on the inner wall of the heat conductor in a covering mode.
According to the method for controlling the heating of the aerosol generating product by the aerosol generating device, the first resistance heating element and the second resistance heating element are used for correspondingly detecting the temperature of the other side, so that the temperature of the heat conductor can be accurately stabilized at the required temperature finally, the problem of inaccurate temperature measurement is solved, and the phenomenon that the temperature of the heat conductor drifts is avoided.
Drawings
Fig. 1 is a partial structural schematic diagram of an aerosol-generating device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention 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 invention and are not intended to limit the invention.
In the present invention, when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present, unless otherwise specifically limited to "directly. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, unless expressly stated otherwise. In contrast, when an element is referred to as being "directly connected" or "directly secured," there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only. The various objects of the drawings are drawn to scale for ease of illustration and not to scale for actual components.
An "aerosol-generating device" as described in embodiments of the present invention refers to a device for providing thermal or electrical energy to an aerosol-generating article, such as a smoking article. The aerosol-generating device may provide thermal energy directly to heat the aerosol-generating article or, preferably, to provide electrical energy to an aerosol-generating article which converts the electrical energy to thermal energy to heat the smoking material.
An "aerosol-generating article" as described in embodiments of the present invention refers to a product, such as an aerosol-generating article, cartridge or cigarette, preferably a disposable article, containing a smoking material, capable of generating an aerosol, such as smoke or a mist, upon heating. The aerosol-generating article is not capable of providing electrical energy by itself.
The "smoking material" in the embodiments of the present invention refers to a smoking material, which is a material that can generate odor and/or nicotine and/or smoke upon heating or combustion, i.e., a material that can be atomized, i.e., an aerosol generating material. The tobacco material can be solid, semi-solid and liquid. Solid tobacco materials are often processed into sheet-like products due to considerations such as breathability, assembly, and manufacture, and are also commonly referred to as sheet, and filamentary sheet is also referred to as sheet filament. The tobacco material discussed in the embodiments of the present invention may be natural or synthetic tobacco liquid, tobacco oil, tobacco gum, tobacco paste, tobacco shred, tobacco leaf, etc., for example, the synthetic tobacco material contains glycerin, propylene glycol, nicotine, etc. The tobacco liquid is liquid, the tobacco tar is oily, the tobacco gel is gelatinous, the tobacco paste is pasty, the tobacco shreds comprise natural or artificial or extracted tobacco shreds, and the tobacco leaves comprise natural or artificial or extracted tobacco leaves. The smoking material may be heated in the form of an enclosure with other materials, such as in a heat-degradable package, for example a microcapsule, from which the desired volatile material is derived after heating.
The tobacco material of the embodiment of the invention may or may not contain nicotine. The tobacco material containing nicotine may include at least one of natural tobacco leaf product, tobacco liquid, tobacco oil, tobacco glue, tobacco paste, tobacco shred, tobacco leaf, etc. prepared from nicotine. The tobacco liquid is in water state, the tobacco tar is in oil state, the tobacco gum is in gel state, the tobacco paste is in paste state, the tobacco shred comprises natural or artificial or extracted tobacco shred, and the tobacco leaf comprises natural or artificial or extracted tobacco leaf. The nicotine-free tobacco material mainly contains fragrant substances, such as spices, and can be atomized to simulate smoking process and quit smoking. In one embodiment, the flavoring comprises peppermint oil. The smoking material may also include other additives such as glycerin and/or propylene glycol.
Embodiments of the present invention provide a method of controlling heating of an aerosol-generating article by an aerosol-generating device.
Referring to figure 1, an aerosol-generating device comprises a power source and a heat conductor 1 for conducting heat to an aerosol-generating article, the heat conductor 1 being at least partially inserted into or wrapped around the aerosol-generating article for conducting heat to heat the aerosol-generating article, such as a prior art heating sheet, heating rod or heating tube wrapped around the aerosol-generating article.
At least one first resistive heating element 2 and at least one second resistive heating element 3 are arranged on the heat conductor 1, each first resistive heating element 2 and each second resistive heating element 3 being connectable to a power supply. The first resistance heating member 2 and the second resistance heating member 3 are respectively made of a resistance material. Resistive materials include, but are not limited to: semiconductors such as doped ceramics, "conductive" ceramics (e.g., molybdenum disilicide), carbon, graphite, metals, metal alloys, and composites made of ceramic and metallic materials. The composite material may comprise doped or undoped ceramics. Examples of suitable doped ceramics include doped silicon carbide. Examples of suitable metals include titanium, zirconium, tantalum, and platinum group metals. Examples of suitable metal alloys include stainless steel, alloys containing nickel, cobalt, chromium, aluminum, titanium, zirconium, hafnium, niobium, molybdenum, tantalum, tungsten, tin, gallium, manganese, and iron, and superalloys based on nickel, iron, cobalt, stainless steel, and iron-manganese-aluminum based alloys. In a composite material, the resistive material may optionally be embedded within the insulating material, encapsulated or coated with the insulating material, or vice versa, depending on the kinetics of energy transfer and the desired external physicochemical properties. The material of the heat conductor 1 includes one or more of glass, ceramic, anodized metal, coated metal, polyimide, and the like, and the ceramic may include mica, alumina (Al2O3), or zirconia (ZrO 2).
Each of the first resistive heating elements 2 and each of the second resistive heating elements 3 is respectively provided on the outer wall of the heat conductor 1; alternatively, the heat conductor 1 is hollow tubular, and each of the first resistance heating members 2 and each of the second resistance heating members 3 is respectively provided on the inner wall of the heat conductor 1; alternatively, the heat conductor 1 is hollow tubular, and each of the first resistance heating members 2 is provided on the outer wall of the heat conductor 1, and each of the second resistance heating members 3 is provided on the inner wall of the heat conductor 1.
Wherein the first resistive heating element 2 and the second resistive heating element 3 are deposited on the heat conductor 1 using any suitable technique such as evaporation, plating, printing, etc. The aerosol-generating device further comprises a controller connected to the power supply and to each of the first resistive heating elements 2 and each of the second resistive heating elements 3. The method of controlling heating of the aerosol-generating article is in particular controlled by a controller.
In particular, the method for controlled heating of an aerosol-generating device comprises the steps of controlling the power supply to the at least one second resistive heating element 3 at a first predetermined time and controlling the power supply to the at least one first resistive heating element 2 at a second predetermined time, the steps of controlling the power supply to the at least one second resistive heating element 3 at the first predetermined time and controlling the power supply to the at least one first resistive heating element 2 at the second predetermined time preferably being alternated, allowing a more accurate and more temperature controlled measurement to be taken with respect to each other. That is, the first preset time and the second preset time are alternate times, such as the first preset time is a time of 0s, 10s, 20s, 24s, 28s, the second preset time is a time of 5s, 15s, 22s, 26s, 30s, and so on. The specific time of the first preset time and the second preset time is determined according to the requirement, and preferably, in the initial heating stage, the first preset time and the second preset time are separated by a longer time, such as alternating by 5s-20 s. When the temperatures of the first resistance heating element 2 and the second resistance heating element 3 approach the predetermined temperature, the approach may be slightly lower, slightly higher or equal, and the first predetermined time and the second predetermined time are separated by a shorter time, for example, alternating by 0.5s to 3 s. Preferably, the second preset time is when the first temperature value reaches a value close to the preset temperature, that is, the step of controlling the power supply to the at least one first resistive heating element 2 at the second preset time is entered; the first predetermined time is when the second temperature value reaches a value close to the predetermined temperature, which may be slightly lower, slightly higher or equal, that is to say, the step of controlling the power supply to the at least one first resistive heating element 2 at the first predetermined time is then carried out.
Wherein the step of controlling the power supply to the at least one second resistive heating element 3 at a first predetermined time further comprises:
measuring at least once a first resistivity of at least one first resistive heating element 2; that is, the number of times the first resistivity of the first resistive heating element 2 is measured may be one or more times, as required, each time the step of controlling the power supply to the at least one second resistive heating element 3 at the first preset time is entered;
deriving a first temperature value from the measured first resistivity after each measurement, the first temperature value being used to mark the actual temperature of the controlled powered second resistive heating element 3; that is, the temperature of the second resistance heating member 3 is inductively detected by the first resistance heating member 2;
comparing the first temperature value with a preset temperature after the first temperature value is derived every time;
after each comparison, the electric energy supplied by the power supply to the controlled second resistive heating element 3 is adjusted to keep the first temperature value below the predetermined temperature, i.e. the actual temperature of the second resistive heating element 3 below the predetermined temperature, so as to prevent the aerosol-generating article from being heated above the predetermined temperature and generating harmful substances.
The step of controlling the power supply to the at least one first resistive heating element 2 at a second predetermined time further comprises:
measuring at least once a second resistivity of the at least one second resistive heating element 3; that is, the number of times of measuring the second resistivity of the second resistive heating member 3 may be one or more times, as needed, each time the step of controlling the power supply to the at least one first resistive heating member 2 at the second preset time is entered;
deriving a second temperature value from the measured second resistivity after each measurement, wherein the second temperature value is used for marking the actual temperature of the first resistance heating element 2 which is controlled to supply power; that is, the temperature of the first resistance heating member 2 is inductively detected by the second resistance heating member 3;
comparing the second temperature value with a preset temperature after the second temperature value is derived every time;
after each comparison, the electric energy supplied by the power supply to the first resistance heating element 2 to be powered is adjusted so as to enable the second temperature value to be below the preset temperature, namely, the actual temperature of the first resistance heating element 2 is below the preset temperature, thereby avoiding harmful substances generated when the aerosol generating product is heated to be above the preset temperature.
It is noted that it has been reported in the prior art that the resistivity p increases with increasing temperature. Resistance R is V/I; where V is the voltage across the first resistive heating element 2 or the second resistive heating element 3 and I is the current through the first resistive heating element 2 or the second resistive heating element 3. The resistance R depends on the configuration and the temperature of the first resistance heating member 2 or the second resistance heating member 3, and is represented by the following relationship: where ρ (T) is the temperature-dependent resistivity, L is the length of the first or second resistive heating element 2, 3, and S is the cross-sectional area of the first or second resistive heating element 2, 3. For a given configuration of the first resistance heating element 2 or the second resistance heating element 3, L and S are fixed and can be measured. Thus, for a given design of the first or second resistive heating element 2, 3, R is proportional to ρ (T). The resistivity ρ (T) of the first or second resistive heating member 2 or 3 can be expressed in the form of a polynomial equation as follows: ρ (T) × (1+ α 1T + α 2T2) where ρ o is the resistivity at the reference temperature To and α 1 and α 2 are coefficients of a polynomial. Thus, knowing the length and cross section of the first resistive heating element 2 or the second resistive heating element 3, the resistance R can be determined and from this the resistivity p at a given temperature can be determined by measuring the voltage V and the current I of the first resistive heating element 2 or the second resistive heating element 3. The temperature can be obtained simply from a lookup table of the characteristic resistivity versus temperature of the first or second resistive heating member 2 or 3 used or by evaluating a polynomial of the above formula. Preferably, the treatment may be simplified by representing the curve of resistivity p versus temperature in one or more (preferably two) linear approximations in the temperature range applicable to tobacco. This simplifies the desired evaluation of the temperature in a controller with limited computational resources. A look-up table of the characteristic resistivity versus temperature of the first or second resistive heating elements 2, 3 may be stored in the controller.
In addition, the method of controlling heating of an aerosol-generating article by an aerosol-generating device prior to the step of controlling the supply of power to the at least one second resistive heating element 3 at a first preset time and the step of controlling the supply of power to the at least one first resistive heating element 2 at a second preset time further comprises: a preset temperature is selected. The aerosol-generating article contains a plurality of volatile compounds, the selection being based on the release temperature of the volatile compounds that should be released and that should not be released, the preset temperature being ≦ a minimum release temperature for at least one of the volatile compounds in the aerosol-generating article, the preset temperature may be pre-stored in the controller. The preset temperature may also be an acceptable range, such as a range within 5% of the preset temperature. In other embodiments, the predetermined temperature ≦ a temperature at which the heated aerosol-generating article generates aerosol but does not cause a combustion event, i.e., the predetermined temperature is used to achieve the effect of heating but not combusting.
In some embodiments, the step of comparing the first temperature value with the preset temperature each time the first temperature value is derived further comprises: calculating a first difference value between the first temperature value and a preset temperature; similarly, the step of comparing the second temperature value with the preset temperature each time the second temperature value is derived further includes: and calculating a second difference value between the second temperature value and the preset temperature. The second preset time is when the first difference between the first temperature value and the preset temperature reaches below 10 ℃, and further preferably, the second preset time is when the first difference between the first temperature value and the preset temperature reaches below 5 ℃. The first preset time is when a second difference between the second temperature value and the preset temperature is less than 10 ℃, and further preferably, the first preset time is when a second difference between the second temperature value and the preset temperature is less than 5 ℃. It should be noted that the first difference may be a difference calculated when the first temperature value is lower than a preset temperature, or may be a difference calculated when the first temperature value is higher than the preset temperature; the second difference may be a difference calculated when the second temperature value is lower than the preset temperature, or may be a difference calculated when the second temperature value is higher than the preset temperature.
Further, the step of adjusting the power supplied by the power supply to the second resistance heating element 3 controlled to supply power after each comparison so as to make the first temperature value below the preset temperature further comprises:
when the first temperature value is larger than or equal to the preset temperature, stopping or reducing the electric energy supplied to the second resistance heating element 3 controlled to supply power by the power supply;
when the first temperature value is less than the preset temperature, and a first difference value between the first temperature value and the preset temperature is in the following condition: if the first preset difference is less than or equal to the second preset difference, keeping the electric energy supplied by the power supply to the second resistance heating element 3 which is controlled to supply power unchanged; if the first difference is larger than the second preset difference, namely the temperature difference is larger, the electric energy supplied by the power supply to the second resistance heating element 3 which is controlled to supply power is increased; if the first difference value < the first predetermined difference value, that is, if the temperature difference is small, the electric power supplied from the power supply to the second resistance heating member 3 to be supplied with electric power is reduced. Wherein the first predetermined difference can be selected from the range of 50-100 deg.C, such as 50 deg.C, 80 deg.C, 100 deg.C, etc., and the second predetermined difference can be selected from the range of 150 deg.C, 250 deg.C, such as 150 deg.C, 200 deg.C, 250 deg.C, etc.
The step of adjusting the power supplied by the power supply to the first resistive heating element 2 to be powered after each comparison so that the second temperature value is below the predetermined temperature further comprises:
when the second temperature value is larger than or equal to the preset temperature, stopping or reducing the electric energy supplied to the first resistance heating element 2 controlled to supply power by the power supply;
when the second temperature value is less than the preset temperature, a second difference between the second temperature value and the preset temperature is as follows: if the first preset difference is less than or equal to the second difference and less than or equal to the second preset difference, keeping the electric energy supplied by the power supply to the first resistance heating element 2 which is controlled to supply power unchanged; if the second difference is greater than the second preset difference, that is, if the temperature difference is large, the electric energy supplied by the power supply to the first resistance heating element 2 to be controlled to supply power is increased; if the second difference is less than the first predetermined difference, i.e. the temperature difference is small, the electrical energy supplied by the power supply to the first resistance heating element 2 to be supplied with electrical energy is reduced. Wherein the first predetermined difference can be selected from the range of 50-100 deg.C, such as 50 deg.C, 80 deg.C, 100 deg.C, etc., and the second predetermined difference can be selected from the range of 150 deg.C, 250 deg.C, such as 150 deg.C, 200 deg.C, 250 deg.C, etc. In other embodiments, the step of measuring at least once the first resistivity of at least one of the first resistive heating elements 2 further comprises: when the number of times of measuring the first resistivity of the first resistance heating member 2 is plural times, a first interval time between next measuring the first resistivity of the first resistance heating member 2 and previous measuring the first resistivity of the first resistance heating member 2 is fixed, or the larger the first difference is, the longer the first interval time is. For example, when the first difference value between the first temperature value and the preset temperature is more than 200 ℃, the first interval time is 10s-20 s; when the first difference value between the first temperature value and the preset temperature is between 100 ℃ and 200 ℃, the first interval time is 5-10 s; when the first difference value between the first temperature value and the preset temperature is below 100, the first interval time is 0.5s-5 s. When first interval time is fixed unchangeable, can increase the electric energy, increase power promptly, can reach the temperature of predetermineeing fast, consequently can carry out the detection temperature at every turn at fixed unchangeable interval time.
Likewise, the step of measuring at least once a second resistivity of at least one of said second resistive heating elements 3 further comprises: when the number of times of measuring the second resistivity of the second resistance heating member 3 is plural times, a second interval time between next measuring the second resistivity of the second resistance heating member 3 and previous measuring the second resistivity of the second resistance heating member 3 is constant, or the larger the second difference is, the longer the second interval time is. For example, when the second difference value between the second temperature value and the preset temperature is more than 200 ℃, the second interval time is 10s-20 s; when the second difference value between the second temperature value and the preset temperature is between 100 ℃ and 200 ℃, the second interval time is 5-10 s; and when the second difference value between the second temperature value and the preset temperature is less than 100 ℃, the second interval time is 0.5s-5 s. When the second interval time is fixed and unchangeable, the electric energy can be increased, namely, the power is increased, the preset temperature can be quickly reached, and therefore the temperature can be detected every time at the fixed and unchangeable interval time.
In other embodiments, the step of controlling the power supply to the at least one second resistive heating element 3 at the first predetermined time further comprises: the first resistance heating element 2 with the first resistivity to be detected is supplied with a preset micro-current by a power supply, and the current magnitude of the preset micro-current hardly enables the first resistance heating element 2 to generate heat when the preset micro-current passes through the first resistance heating element 2 while meeting the requirement of detecting the first resistivity; the step of controlling the power supply to the at least one first resistive heating element 2 at a second predetermined time further comprises: the second resistance heating member 3 of the second resistivity to be measured is supplied with a preset micro-current by a power supply, or may be supplied with a preset micro-current by another power supply, and the preset micro-current hardly causes the second resistance heating member 3 to generate heat when passing through the second resistance heating member 3 while satisfying the demand for detecting the second resistivity. The current amount of the preset micro current is preferably less than or equal to 100 mA.
In further exemplary embodiments, the step of adjusting the power supplied by the power supply to the controlled power supply of the second resistive heating element 3 after each comparison to bring said first temperature value below said predetermined temperature comprises adjusting the power supplied by the power supply to the controlled power supply of the second resistive heating element 3 after each comparison to bring said first temperature value within a predetermined range below said predetermined temperature, for example within-5% of the predetermined temperature, i.e. within a range of the predetermined temperature minus 5% to the predetermined temperature. Likewise, the step of adjusting the power supplied by the power supply to the first resistance heating element 2 to be powered by the power supply to be controlled to be below the preset temperature after each comparison comprises adjusting the power supplied by the power supply to the first resistance heating element 2 to be powered by the power supply to be controlled to be within a preset range below the preset temperature, for example within-5% of the preset temperature, i.e. within a range of the preset temperature minus 5% to the preset temperature, after each comparison.
The invention utilizes the first resistance heating element 2 and the second resistance heating element 3 to detect the temperature of the other side correspondingly, so that the temperature of the heat conductor 1 can be finally and accurately stabilized at the required temperature, the problem of inaccurate temperature measurement is solved, and the phenomenon of temperature drift of the heat conductor 1 is avoided.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within 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 invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of controlling heating of an aerosol-generating device by an aerosol-generating device, the aerosol-generating device comprising a power source and a thermally conductive body for conducting heat to an aerosol-generating article, at least a first resistive heating element and at least a second resistive heating element overlying the thermally conductive body, the method of controlling heating of an aerosol-generating device comprising the steps of controlling the power source to supply power to at least one of the second resistive heating elements for a first predetermined time and controlling the power source to supply power to at least one of the first resistive heating elements for a second predetermined time, wherein,
the step of controlling the power supply to at least one of said second resistive heating elements at a first predetermined time further comprises:
measuring at least once a first resistivity of at least one of said first resistive heating elements;
deriving a first temperature value from the measured first resistivity after each measurement, the first temperature value being used to indicate an actual temperature of a second resistive heating element to be controlled for power supply;
comparing the first temperature value with a preset temperature after deriving the first temperature value each time;
after each comparison, adjusting the electric energy supplied by the power supply to the second resistance heating element controlled to supply power so as to enable the first temperature value to be lower than the preset temperature;
controlling the power supply to supply power to at least one of the first resistive heating elements at a second predetermined time further comprises:
measuring at least once a second resistivity of at least one of said second resistive heating elements;
deriving a second temperature value from the measured second resistivity after each measurement, the second temperature value being used to mark an actual temperature of the first resistive heating element being controlled to supply power;
comparing the second temperature value with a preset temperature after each time of deriving the second temperature value;
after each comparison, the power supplied by the power supply to the first resistance heating element to be powered is adjusted so that the second temperature value is below the preset temperature.
2. A method of controlling a heated aerosol-generating article according to claim 1, wherein the step of comparing the first temperature value with a preset temperature each time the first temperature value is derived further comprises: calculating a difference value between the first temperature value and a preset temperature and setting the difference value as a first difference value;
the step of comparing the second temperature value with a preset temperature after deriving the second temperature value each time further comprises: and calculating the difference value between the second temperature value and the preset temperature and setting the difference value as a second difference value.
3. A method of controlling heating of an aerosol-generating article according to claim 2, wherein the step of adjusting the power supplied by the power supply to the second resistive heating element to be powered controlled to bring the first temperature value below the preset temperature after each comparison further comprises:
when the first temperature value is larger than or equal to the preset temperature, stopping or reducing the electric energy supplied to the second resistance heating element controlled to supply power by the power supply;
when the first temperature value is less than the preset temperature, and a first difference value between the first temperature value and the preset temperature is in the following condition: if the first preset difference is smaller than or equal to the first difference and smaller than or equal to the second preset difference, keeping the electric energy supplied by the power supply to the second resistance heating element controlled to supply power unchanged; if the first difference is larger than a second preset difference, increasing the electric energy supplied by the power supply to the second resistance heating element controlled to supply power; if the first difference is less than the first preset difference, reducing the electric energy supplied by the power supply to the second resistance heating element controlled to supply power;
the step of adjusting the power supplied by the power source to the first resistive heating element to be powered after each comparison to bring the second temperature value below the predetermined temperature further comprises:
when the second temperature value is larger than or equal to the preset temperature, stopping or reducing the electric energy supplied to the first resistance heating element controlled to supply power by the power supply;
when the second temperature value is less than the preset temperature, a second difference value between the second temperature value and the preset temperature is in the following condition: if the first preset difference is smaller than or equal to the second difference and smaller than or equal to the second preset difference, keeping the electric energy supplied by the power supply to the first resistance heating element controlled to supply power unchanged; if the second difference is larger than the second preset difference, increasing the electric energy supplied by the power supply to the first resistance heating element controlled to supply power; and if the second difference is less than the first preset difference, reducing the electric energy supplied by the power supply to the first resistance heating element controlled to supply power.
4. A method of controlling heating of an aerosol-generating device according to claim 2, wherein the step of controlling the power supply to at least one of the second resistive heating elements at a first predetermined time alternates with the step of controlling the power supply to at least one of the first resistive heating elements at a second predetermined time.
5. An aerosol-generating device controlling a method of heating an aerosol-generating article according to claim 4, wherein the second preset time is when the first temperature value reaches approximately the preset temperature, and the first preset time is when the second temperature value reaches approximately the preset temperature.
6. A method of controlling heating of an aerosol-generating device according to claim 5, wherein the second predetermined time is when the first temperature value differs from the predetermined temperature by a first difference of less than 10 ℃; the first preset time is when a second difference value between the second temperature value and the preset temperature reaches below 10 ℃.
7. A method of controlling heating of an aerosol-generating article according to claim 2, wherein the step of at least one measurement of the first resistivity of at least one of the first resistive heating elements further comprises: when the number of times of measuring the first resistivity of the first resistance heating member is plural times, an interval time between next measuring the first resistivity of the first resistance heating member and previous measuring the first resistivity of the first resistance heating member is set as a first interval time, and the first interval time is fixed or the first interval time is longer as the first difference value is larger;
the step of measuring at least once a second resistivity of at least one of said second resistive heating elements further comprises: when the number of times of measuring the second resistivity of the second resistance heating member is plural times, an interval time between the next measurement of the second resistivity of the second resistance heating member and the previous measurement of the second resistivity of the second resistance heating member is set as a second interval time, and the second interval time is fixed and does not change, or the second interval time is longer as the second difference value is larger.
8. A method of controlling heating of an aerosol-generating article according to claim 1, wherein the aerosol-generating article contains a plurality of volatile compounds and the predetermined temperature satisfies at least one of the following two conditions: the predetermined temperature is less than or equal to the minimum release temperature of at least one of the volatile compounds in the aerosol-generating article, and the predetermined temperature is less than or equal to the temperature at which heating of the aerosol-generating article generates aerosol but does not cause a combustion event.
9. A method of controlling heating of an aerosol-generating device according to claim 8, wherein the step of adjusting the power supplied by the power supply to the controlled powered second resistive heating element after each comparison to bring the first temperature value below the predetermined temperature comprises adjusting the power supplied by the power supply to the controlled powered second resistive heating element after each comparison to bring the first temperature value within a predetermined range below the predetermined temperature;
the step of adjusting the power supplied by the power supply to the controlled powered first resistive heating element after each comparison to bring the second temperature value below the predetermined temperature comprises adjusting the power supplied by the power supply to the controlled powered first resistive heating element after each comparison to bring the second temperature value within a predetermined range below the predetermined temperature.
10. A method of controlling heating of an aerosol-generating device according to claim 1, wherein each of the first resistive heating elements and each of the second resistive heating elements overlie a respective outer wall of the heat-conducting body; or, the heat conductor is in a hollow tubular shape, and each first resistance heating element and each second resistance heating element are respectively covered on the inner wall of the heat conductor; or, the heat conductor is in a hollow tubular shape, each first resistance heating element is arranged on the outer wall of the heat conductor in a covering mode, and each second resistance heating element is arranged on the inner wall of the heat conductor in a covering mode.
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| PCT/CN2021/071350 WO2021143697A1 (en) | 2020-01-17 | 2021-01-13 | Method for controlling heating of aerosol generation article by using aerosol generation device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104116138A (en) * | 2014-06-24 | 2014-10-29 | 深圳市麦克韦尔科技有限公司 | Electronic cigarette and control method thereof |
| CN106028857A (en) * | 2014-06-24 | 2016-10-12 | 深圳麦克韦尔股份有限公司 | Electronic cigarette and control method therefor |
| CN107407941A (en) * | 2015-04-15 | 2017-11-28 | 菲利普莫里斯生产公司 | Electric heater is controlled with the apparatus and method of limit temperature with time distribution curve according to desired temperature |
| CN109105959A (en) * | 2018-09-05 | 2019-01-01 | 深圳瀚星翔科技有限公司 | A kind of temperature controlled method of fire-cured tobacco type electronic cigarette and fire-cured tobacco type electronic cigarette |
| CN109645571A (en) * | 2019-01-04 | 2019-04-19 | 深圳麦克韦尔股份有限公司 | Heat not burner and its heating component, scaling method |
| CN209788480U (en) * | 2019-01-26 | 2019-12-17 | 深圳市合元科技有限公司 | Cigarette heating assembly and electric heating smoking device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019104027A1 (en) * | 2017-11-22 | 2019-05-31 | Jim Connolly | Multi-zoned, fixed potential test sensor heating system |
| CN207518878U (en) * | 2017-11-30 | 2018-06-19 | 深圳市合元科技有限公司 | A kind of temperature control ceramic heating plate and smoking set |
| CN108576948A (en) * | 2018-08-10 | 2018-09-28 | 普维思信（北京）科技有限公司 | It is a kind of to be used to heat the not heating device of burning cigarette and Segmented heating method |
| CN208863605U (en) * | 2018-09-17 | 2019-05-17 | 湖南中烟工业有限责任公司 | Heat smoking set heater, smoking set and the fume extraction system of not burning |
| CN111165907B (en) * | 2020-01-17 | 2022-09-27 | 深圳御烟实业有限公司 | Method of controlling heating of an aerosol-generating article by an aerosol-generating device |
-
2020
- 2020-02-24 CN CN202010110405.6A patent/CN111165907B/en active Active
-
2021
- 2021-01-13 WO PCT/CN2021/071350 patent/WO2021143697A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104116138A (en) * | 2014-06-24 | 2014-10-29 | 深圳市麦克韦尔科技有限公司 | Electronic cigarette and control method thereof |
| CN106028857A (en) * | 2014-06-24 | 2016-10-12 | 深圳麦克韦尔股份有限公司 | Electronic cigarette and control method therefor |
| CN107407941A (en) * | 2015-04-15 | 2017-11-28 | 菲利普莫里斯生产公司 | Electric heater is controlled with the apparatus and method of limit temperature with time distribution curve according to desired temperature |
| CN109105959A (en) * | 2018-09-05 | 2019-01-01 | 深圳瀚星翔科技有限公司 | A kind of temperature controlled method of fire-cured tobacco type electronic cigarette and fire-cured tobacco type electronic cigarette |
| CN109645571A (en) * | 2019-01-04 | 2019-04-19 | 深圳麦克韦尔股份有限公司 | Heat not burner and its heating component, scaling method |
| CN209788480U (en) * | 2019-01-26 | 2019-12-17 | 深圳市合元科技有限公司 | Cigarette heating assembly and electric heating smoking device |
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| CN111165907A (en) | 2020-05-19 |
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