An electric heating cigarette preheating method

Abstract

The present invention discloses a preheating method for an electrically heated cigarette, comprising the following steps: presetting a temperature detection point in a heating smoking device and preheating a damp cigarette; setting a preheating time and obtaining the actual temperature at the temperature monitoring point; obtaining an actual heating rate according to the actual temperature and the preheating time; obtaining the moisture content of the damp cigarette according to the actual heating rate and the heating rate of a normal cigarette; and reducing the moisture content of the damp cigarette to within the range of the moisture content of a normal cigarette according to a preset method. By means of preheating treatment, the present invention increases the atomization amount and aerosol concentration, so that the smoking experience of the damp cigarette after preheating treatment is similar to that of a newly opened normal cigarette, effectively solving the problems of insufficient smoke amount at the initial stage of smoking and hot smoke hurting the mouth caused by cigarette dampness.

Description

Technical Field

[0001] The invention relates to the technical field of cigarette processing, in particular to a method for preheating electrically heated cigarettes. Background Art

[0002] As a mainstream new tobacco product, electric-heated cigarettes are inhaled by electrically heating the aerosol of tobacco component products. Depending on the heating method, the maximum heating temperature of the heating element is generally around 250℃ to 350℃. When inhaling, the heating element usually quickly reaches the maximum heating temperature within 30 seconds to preheat the tobacco matrix. After reaching the working temperature, it prompts consumers to inhale, and the tobacco matrix and the atomizers and water added to it, such as glycerin and propylene glycol, evaporate and form an aerosol together with the inhaled air.

[0003] Since the atomizer in the tobacco matrix of heated cigarettes, such as glycerin, propylene glycol and other polyols, is a hydrophilic additive, it is usually used as a humidifier. In a high humidity environment, it is very easy to absorb water, increasing the moisture content of the tobacco matrix. The specific heat and vaporization heat of water are relatively large. When the moisture content of the tobacco matrix increases significantly (for example, from about 14% to 16%), on the one hand, under the heating mode of the fixed design of the heating device, the first two puffs of the puff will lose a large amount of heat due to the high proportion of water vaporization, the entire atomization amount is insufficient, and the aerosol concentration is reduced; on the other hand, due to the increase in the water content in the aerosol, the condensation heat release energy is relatively high when the inhalation is inhaled, causing discomfort such as burning the mouth.

[0004] Therefore, providing a method for preheating an electrically heated cigarette before smoking the cigarette is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a method for preheating electrically heated cigarettes, which has clear logic and simple operation, can effectively discharge moisture from damp cigarettes in a timely manner, increase the atomization amount and aerosol concentration, and avoid the undesirable experience of burning the mouth.

[0006] Based on the above objectives, the technical solution provided by the present invention is as follows:

[0007] A method for preheating an electrically heated cigarette comprises the following steps:

[0008] Preset temperature detection points in the heated smoking device and preheat damp cigarettes;

[0009] Set the preheating time and obtain the actual temperature at the temperature monitoring point;

[0010] Obtaining an actual heating rate according to the actual temperature and the preheating time;

[0011] Obtain the moisture content of the damp cigarette based on the actual heating rate and the normal heating rate of the cigarette.

[0012] Reduce the moisture content of the damp cigarette to within the range of the moisture content of the normal cigarette according to a preset method.

[0013] Preferably, before obtaining the moisture content of the damp cigarette based on the actual heating rate and the normal heating rate of the cigarette, it further includes: establishing a correspondence relationship between the moisture content of the cigarette and the heating rate.

[0014] Preferably, establishing the correspondence relationship between the moisture content of the cigarette and the heating rate includes the following steps:

[0015] Set the preheating time and preset the standard value of the moisture content of the normal cigarette.

[0016] Increment the standard value of the moisture content to obtain a number of different categories of damp cigarettes.

[0017] Keep the preheating time unchanged, traverse a number of different categories of damp cigarettes to obtain the actual temperatures of a number of different categories of damp cigarettes.

[0018] Fit the actual temperatures of a number of different categories of damp cigarettes and the preheating time to obtain a number of heating rates of the damp cigarettes.

[0019] Establish a correspondence relationship between the moisture content of the cigarette and the heating rate according to a number of different categories of damp cigarettes and a number of heating rates of the damp cigarettes.

[0020] Preferably, obtaining the moisture content of the damp cigarette based on the actual heating rate and the normal heating rate of the cigarette specifically is: query the correspondence relationship between the moisture content of the cigarette and the heating rate according to the actual heating rate to obtain the moisture content of the damp cigarette.

[0021] Preferably, the preset method includes: a flowing air control method and a heating control method.

[0022] Preferably, the flowing air method specifically is: preset an air path in the heating smoking device to discharge excess moisture.

[0023] Preferably, the heating control method specifically is: when the actual temperature is equal to the preset temperature threshold, continue heating.

[0024] Preferably, there are multiple temperature detection points.

[0025] The preheating method of the electric heating cigarette disclosed by the present invention is a method for preprocessing the damp cigarette sticks before suction. In this method, temperature monitoring points are preset in the heating smoking device. After clamping the damp cigarette sticks, the damp cigarette sticks are preheated. A preheating time is set, and when the preheating time is reached, the actual temperature at the temperature detection point is measured and obtained. According to the obtained actual temperature and the set preheating time, the actual heating rate is calculated and obtained. According to the known heating rate of normal cigarette sticks and the actual heating rate, the moisture content of the damp cigarette sticks is calculated and obtained. According to the preset method, the moisture content of the damp cigarette sticks is reduced to within the range of the moisture content of normal cigarette sticks. By preprocessing the damp cigarette sticks before suction, the present invention effectively judges and obtains the moisture content of the damp cigarette sticks, and reduces it to within the range of the moisture content of normal cigarette sticks according to the amount of moisture content of the damp cigarette sticks according to the preset method. By preheating treatment, the atomization amount and aerosol concentration are increased, so that the suction experience of the preheated damp cigarette sticks is similar to that of the newly opened normal cigarette sticks, and the problems of insufficient smoke volume at the initial stage of suction and hot smoke on the mouth caused by the dampness of the cigarette sticks can be effectively solved. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0027] Figure 1 It is a flowchart of a preheating method for an electric heating cigarette provided by an embodiment of the present invention;

[0028] Figure 2 It is a flowchart between step S3 and step S4 of a preheating method for an electric heating cigarette provided by an embodiment of the present invention. Detailed Embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0030] The embodiments of the present invention are written in a progressive manner.

[0031] The embodiment of the present invention provides a method for preheating an electrically heated cigarette. The method mainly solves the technical problems in the prior art that, on the one hand, a damp cigarette, when heated by a fixedly designed heating device, loses a large amount of heat due to high proportion of water vaporization in the first two puffs of the cigarette, resulting in insufficient atomization and reduced aerosol concentration; on the other hand, due to the increased proportion of water in the aerosol, the condensation heat release energy is high when the cigarette is inhaled, causing discomfort such as burning the mouth.

[0032] A method for preheating an electrically heated cigarette comprises the following steps:

[0033] S1. Preset the temperature detection point in the heating device and preheat the damp cigarettes;

[0034] S2. Set the preheating time and obtain the actual temperature at the temperature monitoring point;

[0035] S3. Obtain the actual heating rate according to the actual temperature and preheating time;

[0036] S4. Obtain the moisture content of the damp cigarette according to the actual heating rate and the normal heating rate of the cigarette;

[0037] S5. Reduce the moisture content of damp cigarettes to within the range of normal moisture content of cigarettes according to the preset method.

[0038] In step S1, a damp cigarette is inserted into the heating device, and then a temperature detection point is preset in the heating device. The temperature detection point is generally set at the damp cigarette. After the temperature detection point is set, the damp cigarette is preheated;

[0039] In step S2, a corresponding preheating time is set, and the damp cigarette is continued to be preheated. After reaching the corresponding preheating time, the actual temperature at the temperature detection point is measured. In actual use, the preheating time can be selected according to actual needs;

[0040] In step S3, the heating rate can be calculated based on the actual temperature and preheating time obtained, that is, the actual temperature divided by the preheating time;

[0041] In step S4, according to the normal cigarette temperature rise rate, that is, the cigarettes with a moisture content of less than 12% are defined as normal cigarettes. The temperature of the normal cigarette can be measured by the preheating time. The normal cigarette temperature and the preheating time can be used to calculate the normal cigarette temperature rise rate. Combined with the actual temperature rise rate of the damp cigarette, the moisture content of the damp cigarette is calculated.

[0042] In step S5, the moisture content of the damp cigarette is compared with the moisture content of the normal cigarette, and the moisture content of the damp cigarette is reduced to below 12% by a preset method.

[0043] Preferably, before obtaining the moisture content of the damp cigarette based on the actual heating rate and the normal heating rate of the cigarette, it further includes: establishing a corresponding relationship between the moisture content of the cigarette and the heating rate.

[0044] In the actual application process, between step S3 and step S4, there is also an intermediate step, specifically: establishing a corresponding relationship between the moisture content of the cigarette and the heating rate. Heat the atomizing agent in the tobacco matrix of the heated cigarette. Polyhydric alcohols such as glycerol and propylene glycol are hydrophilic additives and are usually used as humectants. In a humid environment, they are extremely likely to absorb water, increasing the moisture content of the tobacco matrix. And with the increase in the moisture content of the tobacco matrix, an obvious manifestation is the decrease in the heating rate. By establishing a corresponding relationship between the moisture content of the cigarette and the heating rate, the moisture content of the damp cigarette can be obtained quickly and effectively. In this embodiment, the formula for the corresponding relationship between the moisture content of the cigarette and the heating rate is specifically: f(heating power)*f(ΔT / t) = f(moisture content), where ΔT is the actual temperature of the damp cigarette and t is the preheating time.

[0045] Preferably, establishing a corresponding relationship between the moisture content of the cigarette and the heating rate includes the following steps:

[0046] A1. Set the preheating time and preset the standard value of the moisture content of the normal cigarette.

[0047] A2. Increase the standard value of the moisture content to obtain several different categories of damp cigarettes.

[0048] A3. Keep the preheating time unchanged, traverse several different categories of damp cigarettes to obtain the actual temperatures of several different categories of damp cigarettes.

[0049] A4. Fit the actual temperatures and preheating times of several different categories of damp cigarettes to obtain the heating rates of several damp cigarettes.

[0050] A5. Establish a corresponding relationship between the moisture content of the cigarette and the heating rate based on several different categories of damp cigarettes and the heating rates of several damp cigarettes.

[0051] In step A1, preset the standard value of the moisture content of the normal cigarette and the preheating time. Among them, the preheating time can be the same as or different from the preheating time in step S2; the standard value of the moisture content of the normal cigarette set by those skilled in the art is 12%, that is, cigarettes with a moisture content lower than this standard value belong to normal cigarettes, and those higher than this standard value belong to damp cigarettes.

[0052] In step A2, the standard value of moisture content is incremented. For the convenience of calculation, it is incremented by 1% each time. In this embodiment, by incrementing the standard value of moisture content, multiple different categories of damp cigarettes can be obtained, namely L1: 13%, L2: 14%, L3: 15%, L4: 16%, L5: 17%, L6: 18%, and so on. Among them, L represents the type of cigarette. In this embodiment, 6 different categories of damp cigarettes are selected.

[0053] In step A3, the preheating time is fixed and unchanged, and multiple different categories of damp cigarettes are traversed to obtain multiple actual temperatures, namely T1; T2; T3; T4; T5; T6; and so on, corresponding one by one to the cigarettes of each category;

[0054] In step A4, the preheating time and the actual temperatures of multiple different categories of damp cigarettes, namely T1; T2; T3; T4; T5; T6; T7, are fitted to obtain the heating rates V1; V2; V3; V4; V5; V6 of multiple damp cigarettes;

[0055] In step A5, according to multiple different categories of damp cigarettes L1; L2; L3; L4; L5; L6; L7 and the heating rates V1; V2; V3; V4; V5; V6 of multiple damp cigarettes, a corresponding relationship between the cigarette moisture content and the heating rate is established.

[0056] Preferably, the specific moisture content of the damp cigarette is obtained according to the actual heating rate and the heating rate of a normal cigarette: the corresponding relationship between the cigarette moisture content and the heating rate is queried according to the actual heating rate to obtain the moisture content of the damp cigarette.

[0057] In the actual application process, according to the obtained actual heating rate, the corresponding relationship table between the cigarette moisture content and the heating rate is queried to obtain the moisture content of the damp cigarette.

[0058] Preferably, the preset methods include: the flowing air control method and the heating control method.

[0059] Preferably, the flowing air method is specifically: a gas path is preset in the heating smoking device to discharge the excess moisture.

[0060] Preferably, the heating control method is specifically: when the actual temperature is equal to the preset temperature threshold, continue to heat up.

[0061] In the actual application process, the preset methods for reducing the moisture content include the flowing air control method and the heating control method. Briefly speaking, that is, an air passage is set in the heating smoking device, and by maintaining a relatively high temperature for a period of time, the evaporated water vapor is discharged from the air passage to achieve the effect of reducing the moisture content of the cigarette; or when the actual temperature is equal to the preset temperature threshold, the temperature is continuously increased to bake the cigarette at a higher temperature, so that the moisture in it gradually vaporizes at high temperature, thereby achieving the effect of reducing the moisture content of the cigarette.

[0062] Preferably, there are multiple temperature detection points.

[0063] In the actual application process, to ensure that the measured temperature is more accurate, multiple temperature detection points can be set, and after measuring the temperatures at multiple temperature detection points, the average temperature is taken.

[0064] In the embodiments provided by the present application, it should be understood that the disclosed methods and devices can be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of modules is only a logical function division. In actual implementation, there may be other division methods, such as: multiple modules or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or modules can be electrical, mechanical, or other forms.

[0065] In addition, in each embodiment of the present invention, each functional module can be all integrated in one processor, or each module can be separately used as a device alone, or two or more modules can be integrated in one device; each functional module in each embodiment of the present invention can be implemented in the form of hardware, or in the form of a combination of hardware and software functional units.

[0066] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed through program instructions and related hardware. The foregoing program instructions can be stored in a computer-readable storage medium. When the program instructions are executed, the steps including the above method embodiments are executed; and the foregoing storage media include: mobile storage devices, read-only memories (ROMs), magnetic disks, or optical disks, etc., which can store program codes.

[0067] As shown in this application and the claims, unless the context clearly indicates otherwise, words such as "a", "an", "one", and / or "the" are not specifically singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. A method or device may also include other steps or elements. An element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article, or device that includes the element.

[0068] If a flowchart is used in this application, the flowchart is used to illustrate the operations performed by the system according to the embodiments of this application. It should be understood that the operations before or after may not be executed precisely in sequence. On the contrary, the steps can be processed in reverse order or simultaneously. At the same time, other operations can also be added to these processes, or one or several steps can be removed from these processes.

[0069] The above has introduced in detail a method for preheating an electric heating cigarette provided by the present invention. The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electric heating cigarette preheating method, characterized in that, It includes the following steps: Preset a temperature detection point in the heating smoking device and preheat the damp cigarette; Set the preheating time and obtain the actual temperature at the temperature detection point; Obtain the actual heating rate according to the actual temperature and the preheating time; Obtain the moisture content of the damp cigarette according to the actual heating rate and the heating rate of a normal cigarette; Reduce the moisture content of the damp cigarette to within the range of the moisture content of a normal cigarette according to a preset method; Before obtaining the moisture content of the damp cigarette according to the actual heating rate and the heating rate of a normal cigarette, it further includes: establishing a correspondence relationship between the moisture content of the cigarette and the heating rate; The establishing of the correspondence relationship between the moisture content of the cigarette and the heating rate includes the following steps: Set the preheating time and preset a standard value for the moisture content of a normal cigarette; Increment the standard value of the moisture content to obtain several different categories of damp cigarettes; Keep the preheating time unchanged, traverse several different categories of damp cigarettes to obtain the actual temperatures of several different categories of damp cigarettes; Fit the actual temperatures of several different categories of damp cigarettes and the preheating time to obtain the heating rates of several damp cigarettes; Establish a correspondence relationship between the moisture content of the cigarette and the heating rate according to several different categories of damp cigarettes and the heating rates of several damp cigarettes; The obtaining of the moisture content of the damp cigarette according to the actual heating rate and the heating rate of a normal cigarette is specifically: query the correspondence relationship between the moisture content of the cigarette and the heating rate according to the actual heating rate to obtain the moisture content of the damp cigarette; Wherein, a cigarette with a moisture content less than 12% is defined as the normal cigarette.

2. The preheating method of the electrically heated cigarette according to claim 1, wherein, The preset method includes: a flowing air control method and a heating control method.

3. The electric heating cigarette preheating method according to claim 2, wherein The flowing air control method is specifically: preset an air path in the heating smoking device to discharge excess moisture.

4. The electric heating cigarette preheating method according to claim 2, characterized in that, The heating control method is specifically: when the actual temperature is equal to a preset temperature threshold, continue heating.

5. The preheating method of the electrically heated cigarette according to claim 1, characterized in that, There are multiple temperature detection points.

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