CN111329130A - Heat not burn cigarettes based on non-uniform heating control - Google Patents

Abstract

The invention discloses a non-uniform heating control-based non-combustible heating cigarette, which comprises a cigarette shell body, a heating assembly, a heating control system and a battery assembly, wherein the cigarette shell body is provided with a heating cavity; wherein, a heater is arranged in the cigarette case body; the heating assembly is arranged in the heater, a heating space for penetrating cigarettes is arranged in the heating assembly, and two or more heating parts are arranged on the heating assembly at intervals; the heating control system is arranged in the cigarette case body, is connected with the heating assembly and is used for controlling the heating part to independently supply heat in a partial area and/or a time-sharing period; the battery pack is arranged in the cigarette case body and is connected with the heating control system. The non-uniform heating control-based non-combustible cigarette provided by the invention realizes non-uniform heating of different areas of cigarettes, and avoids harmful substances generated by excessive heating of the cigarettes in the early stage, and the influence on smoking taste due to non-uniform smoke release.

Description

Heat not burn cigarettes based on non-uniform heating control

technical field

The present invention relates to the technical field of heat-not-burn cigarettes, in particular to a heat-not-burn cigarette based on non-uniform heating control.

Background technique

Heat not burn cigarette is a new type of tobacco product that realizes smoking by heating cigarettes. In the prior art, there is still a big gap between the taste of heat-not-burn cigarettes and traditional cigarettes. Different from traditional cigarettes, HNB cigarettes designed with the idea of heat not burn can heat the tobacco material just enough to emit smoke without igniting the tobacco material. Under normal circumstances, traditional cigarettes will produce many harmful substances at a high temperature of more than 800°C when lit and smoked, while heat-not-burn cigarettes are generally heated below 350°C, and the harmful substances will be significantly reduced. However, the current curing cigarette sets cannot effectively control the curing temperature during the heating process, which easily overheats the cigarettes prematurely, destroys the taste of the cigarettes and causes smokers to inhale more harmful substances. In view of this, it is very important to design and manufacture a heat-not-burn cigarette system with good temperature control effect in the production of heat-not-burn cigarettes.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a heat-not-burn cigarette based on non-uniform heating control, so as to solve the above-mentioned problems in the prior art, realize non-uniform heating of cigarettes, and reasonably adjust the accumulation of tobacco materials in the whole working stage. The heating process avoids the increase of harmful substances and the poor consistency of smoke caused by premature overheating of cigarettes, and non-uniform heating control can also improve energy utilization and reduce heat dissipation.

The present invention provides a heat-not-burn cigarette based on non-uniform heating control, comprising:

a cigarette case body, a heater is arranged in the cigarette case body;

a heating assembly, which is arranged in the heater, the heating assembly is provided with a heating space for passing cigarettes, and the heating assembly is provided with one or two or more heating parts at intervals;

a heating control system, arranged in the cigarette case body, the heating control system is connected with the heating assembly, and is used for controlling the heating part of the area and/or independently supplying heat in different time periods;

A battery assembly is arranged in the cigarette case body, and the battery assembly is connected with the heating control system.

The non-uniform heating control-based heat-not-burn cigarette as described above, wherein, preferably, the heating assembly includes a heat pipe, a first heating sheet and a second heating sheet, the first heating sheet and the second heating sheet Heating sheets are arranged on the outer side wall of the heat-conducting pipe at intervals, the heat-receiving space is formed in the heat-conducting pipe, and the setting positions of the first heating sheet and the second heating sheet on the heat-conducting pipe form the heat-receiving space. heating section.

The non-uniform heating control-based heat-not-burn cigarette as described above, preferably, further comprises a heat insulating assembly, and the heat insulating assembly is disposed outside the heating assembly.

The non-uniform heating control-based heat-not-burn cigarette as described above, wherein, preferably, the heat insulating assembly sequentially includes a vacuum tube layer, a heat insulating cotton layer and a heat insulating tube layer from the inside to the outside, and the vacuum tube layer covers The first heat generating sheet and the second heat generating sheet are provided outside the heat conducting pipe, and the first heat generating sheet and the second heat generating sheet are placed between the vacuum tube layer and the heat conducting pipe.

The non-uniform heating control-based heat-not-burn cigarette as described above, wherein, preferably, the cigarette shell body is provided with an air inlet and an air outlet, and the air inlet and the air outlet are respectively arranged in the cigarette case. both ends of the heater.

The non-uniform heating control-based heat-not-burn cigarette as described above, wherein, preferably, the heater includes a support assembly, and one end of the heating assembly away from the gas outlet is fixedly connected to the support assembly, so An air flow channel is arranged in the support assembly, and two ends of the air flow channel are respectively communicated with the heated space and the air inlet.

The non-uniform heating control-based heat-not-burn cigarette as described above, preferably, further comprises an air intake plug, the air intake plug being detachably arranged in the air intake port.

The non-uniform heating control-based heat-not-burn cigarette as described above, wherein, preferably, the heating control system includes a timing unit and a controller;

The timing unit is used to judge whether the heating duration of the first heating sheet reaches or exceeds the first duration, and if so, sends a first time signal; the controller controls the first heating according to the first time signal The tablet stops heating;

The timing unit is also used to judge whether the heating duration of the second heating element reaches or exceeds the preset duration of the first stage, and if so, sends out a second time signal; the controller controls according to the second time signal. the second heating unit stops heating;

The timing unit is also used to determine whether the heating duration of the second heating element reaches or exceeds the second duration, and if so, sends a third time signal; the controller controls the second heating element according to the third time signal. Stop heating, and control the first heating sheet to heat the cigarette;

The timing unit is also used to judge whether the heating duration of the first heating element reaches or exceeds the preset duration of the second stage, and if so, sends a fourth time signal; the controller controls the first heating element according to the fourth time signal. A heating element stops heating.

The non-uniform heating control-based heat-not-burn cigarette as described above, wherein, preferably, the heating control system further includes an intake air temperature detection module and an outlet air temperature detection module, and the intake air temperature detection module is provided in the On the air inlet, the outlet temperature detection module is arranged on the air outlet;

Before the heater works, the intake air temperature detection module is used to detect whether the temperature at the intake port reaches or exceeds the preparatory intake air temperature value, and if so, sends a first intake air temperature signal; air temperature signal;

The controller is configured to set the first stage preset duration as the first preset duration of the first stage according to the first intake air temperature signal;

The controller is further configured to set the first stage preset duration as the second preset duration of the first stage according to the second intake air temperature signal, and the second preset duration is greater than or equal to the first stage. a preset duration;

During the heater operation, the intake air temperature detection module is used to detect whether the temperature at the intake port reaches or exceeds the working intake air temperature value, and if so, sends a third intake air temperature signal;

The controller stops heating of the first heat generating sheet and the second heat generating sheet according to the third intake air temperature signal.

The outlet temperature detection module is used to detect whether the temperature at the outlet reaches or exceeds a preset outlet temperature value, and if so, sends an outlet temperature signal;

The controller stops the heating of the first heating plate and the second heating plate according to the outlet air temperature signal.

The above non-uniform heating control based heat not burn cigarette, wherein, preferably, the heating control system further includes a first temperature detection module and a second temperature detection module, the first temperature detection module and the The first heating sheet is connected, and the second temperature detection module is connected with the second heating sheet.

The heat-not-burn cigarette based on non-uniform heating control provided by the present invention realizes non-uniform heating of different areas of the cigarette in different stages of the smoking process, reasonably adjusts the cumulative heating process of the tobacco material in the entire working stage, and effectively It avoids problems such as the increase of harmful substances and poor consistency of smoke production caused by premature overheating of cigarettes, which affects the taste of smoking; and non-uniform heating control can also improve energy utilization and reduce heat dissipation.

Description of drawings

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

1 is a schematic structural diagram of a heat-not-burn cigarette based on non-uniform heating control provided by an embodiment of the present invention;

Figure 2 is a schematic structural diagram of a heating assembly;

3 is a schematic diagram of the cooperation of the heating assembly and the heat insulation assembly;

FIG. 4 is a schematic diagram of the heating temperature changes of the first heating element and the second heating element during operation.

Description of reference numbers:

100-Smoke shell body 110-Air outlet 120-Air inlet

121-Intake plug 130-Rotating cover 140-Cigarette clip

200-Heating component 210-Heat pipe 211-Heating space

220-First heating element 230-Second heating element 300-Heating control system

400-battery assembly 500-support assembly 510-connector

520-Protection piece 530-Air flow channel 600-Insulation component

610-Vacuum tube layer 620-Insulation cotton layer 630-Insulation tube layer

Detailed ways

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and in no way limits the disclosure, its application or uses in any way. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that unless specifically stated otherwise, the relative arrangements of parts and steps, compositions of materials, numerical expressions and numerical values set forth in these embodiments are to be interpreted as illustrative only and not as limiting.

As used in this disclosure, "first", "second": and similar terms do not denote any order, quantity, or importance, but are merely used to distinguish the different parts. "Comprising" or "comprising" and similar words mean that the element preceding the word covers the elements listed after the word, and does not exclude the possibility that other elements are also covered. "Up", "down", etc. are only used to indicate the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

In the present disclosure, when a specific component is described as being between a first component and a second component, there may or may not be an intervening component between the specific component and the first component or the second component. When it is described that a specific component is connected to other components, the specific component may be directly connected to the other components without intervening components, or may not be directly connected to the other components but have intervening components.

All terms (including technical or scientific terms) used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, general-purpose dictionaries should be construed to have meanings consistent with their meanings in the context of the related art, and not to be construed in an idealized or highly formalized sense, unless explicitly stated herein. Defined like this.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification.

As shown in FIGS. 1 to 4 , an embodiment of the present invention provides a heat-not-burn cigarette based on non-uniform heating control, which includes a cigarette shell body 100 , a heating assembly 200 , a heating control system 300 and a battery assembly 400 ; wherein, The cigarette case body 100 is provided with a heater; the heating component 200 is provided in the heater, the heating component 200 is provided with a heating space 211 for passing cigarettes, and the heating component 200 may be provided with one or two and The above heating parts are preferably provided with two heating parts in this embodiment; the heating control system 300 is arranged in the cigarette case body 100, and the heating control system 300 is connected with the heating assembly 200, and is used to control the heating part of the region and/or the time period Independent heating; the battery assembly 400 is arranged in the cigarette case body 100 , and the battery assembly 400 is connected with the heating control system 300 .

Wherein, sub-region means that different regions on the cigarette can be heated respectively, and sub-period refers to heating a certain region or a plurality of different regions on the cigarette in different time periods.

When using the heat not burn cigarette, the cigarette can be inserted into the heating space 211 of the heating assembly 200. Since the heating assembly 200 is provided with two or more heating parts at intervals, the cigarette has two or more mutual Heating areas at intervals, each heating area corresponds to a heating part; then the heating control system 300 can be activated to independently control the heating of each heating part, and control them according to different time periods, so as to realize the control of the cigarettes on the cigarettes. The non-uniform heating of different heating areas in different periods of time effectively avoids the increase of harmful substances and the poor consistency of smoke production caused by premature overheating of cigarettes, which affects the taste of smoking; and the above non-uniform heating control also Can improve energy utilization and reduce heat dissipation.

Among them, when there are multiple heating parts, only a part of the heating parts can be engaged in the work, and the rest of the heating parts can never participate in the work, so that the non-uniform heating of the cigarettes can also be achieved, and the purpose of avoiding excessive heating of the cigarettes can be achieved. .

Specifically, the heating assembly 200 includes a heat pipe 210 , a first heating sheet 220 and a second heating sheet 230 . The first heating sheet 220 and the second heating sheet 230 are arranged on the outer side wall of the heat pipe 210 at intervals. The heat-receiving space 211 , the positions of the first heating element 220 and the second heating element 230 on the heat transfer pipe 210 form the heating portion.

The heating control system 300 can respectively control the first heating sheet 220 or the second heating sheet 230 for independent heating, and the heat transfer pipe 210 can conduct heat to the cigarettes in the heating space 211, thereby realizing the heating of the cigarettes.

It should be noted that the heat pipe 210 can be a hard aluminum tube, and the first heating element 220 and the second heating element 230 can both be MEMS micro-heater heating elements, and can also be ceramic heating elements or polyimide film heating elements. , HIC metal thick film heating sheet, etc. In this embodiment, it is preferably a MEMS micro-heater heating sheet, and the two heating sheets can be symmetrically arranged on the outer wall of the heat transfer pipe 210, and can be bonded to the heat transfer pipe 210 by thermally conductive glue. . Among them, the heating sheet can raise the temperature of the hard aluminum tube, achieve the purpose of not burning at a low temperature, and can effectively control the temperature of the curing cigarette. In addition, the rigid aluminum tube has a high thermal conductivity, which can quickly conduct heat to the cigarettes in the heating space 211, so as to bake and heat the cigarettes and volatilize the smoke. The resistance of the heating sheet may be 0.5-1.1 ohm, and the wall thickness of the heat pipe 210 may be 0.05mm-0.5mm. In this embodiment, the wall thickness of the heat pipe 210 is preferably 0.1mm-0.2mm.

In addition, the heating piece can be a cuboid sheet-like structure, and has a radian that matches the surface of the heat pipe 210 , and the ratio of the length of the heating piece to the length of the heat pipe 210 can be 0.5-1.5; The diameter is preferably 0.3 to 0.6 times the outer diameter of the heat transfer pipe 210 .

Further, in order to prevent most of the heat from being transferred to the casing and causing unpleasant feeling for the user, the heat not burn cigarette further includes a heat insulating assembly 600 disposed outside the heating assembly 200 .

Specifically, the heat insulation assembly 600 may be a vacuum heat insulation assembly 600, that is, the heat insulation assembly 600 sequentially includes a vacuum tube layer 610, a heat insulation cotton layer 620 and a heat insulation tube layer 630 from the inside to the outside, and the vacuum tube layer 610 covers The first heating sheet 220 and the second heating sheet 230 are arranged outside the heat transfer pipe 210 , and the first heating sheet 220 and the second heating sheet 230 are arranged between the vacuum tube layer 610 and the heat transfer pipe 210 .

Wherein, when the inner wall temperature of the vacuum tube layer 610 reaches 220°C, the outer wall temperature of the vacuum tube layer 610 is about 90°C to 100°C, and when the inner temperature of the insulating cotton layer 620 reaches 220°C, the outer wall temperature of the heat insulating surface layer is about 90°C to 100°C. In addition, the thermal insulation cotton is aluminum foil thermal insulation cotton, and the thermal insulation tube is a plastic thermal insulation tube, so that the vacuum tube layer 610, the thermal insulation cotton layer 620 and the thermal insulation tube layer 630 can be effectively combined. Insulate and ensure that the temperature of the heated space 211 is maintained in a suitable temperature range.

Further, the cigarette case body 100 is provided with an air inlet 120 and an air outlet 110, and the air inlet 120 and the air outlet 110 are respectively arranged at both ends of the heater.

The heater includes a support assembly 500. One end of the heating assembly 200 away from the air outlet 110 is fixedly connected to the support assembly 500. The support assembly 500 is provided with an air flow channel 530. The ends communicate with the heated space 211 and the air inlet 120 respectively.

Among them, the aerosol generated by the thermal decomposition of the cigarette will flow out from the air outlet 110. If the air inlet 120 is closed, the heated space 211 will accumulate a lot of heat due to the lack of gas circulation, which is easy to cause the cigarette to be overheated and generate harmful gas. Therefore, during the suction process, the air inlet 120 can be opened and conducted, and the air can enter the heated space 211 from the outside of the cigarette case body 100 through the air inlet 120, so as to avoid excessive heat accumulation, and combined with the heating control system 300 It can effectively adjust and control the heating of cigarettes and prevent the generation of harmful substances.

In addition, the airflow channel 530 is also provided with a one-way valve function, the one-way valve can control the air to flow from the air inlet 120 to the heater during suction, and the heated air in the heater cannot flow reversely to the air intake mouth 120.

Specifically, the support assembly 500 includes a connecting piece 510 and a protecting piece 520, one end of the connecting piece 510 is fixedly embedded on the protecting piece 520, and the other end of the connecting piece 510 is fixedly sleeved with the heat pipe 210, so that the connecting piece 510, the protection member 520 and the heating assembly 200 can be pre-assembled into an integral structure and integrally installed in the heater of the cigarette case body 100; at the same time, since the outer wall of the heat pipe 210 is fixed with a heating sheet, the protection member 520 can The end of the heating plate and the hard aluminum tube are protected to prevent bumps.

Further, the heat-not-burn cigarette further includes an intake plug 121 , and the intake plug 121 is detachably arranged in the intake port 120 .

When the HNB cigarette is not used, the air inlet plug 121 can be inserted into the air inlet 120 to prevent the entry of impurities, dust, etc., and to ensure the cleanliness of the air flow passage 530 . In addition, the airflow channel 530 can also be cleaned after the lower intake plug 121 is removed, which facilitates the cleaning operation. Wherein, the air inlet plug 121 may be provided with a hole, so that during the suction process, air can enter the heater through the hole in the air inlet plug 121 . In addition, a filter screen may be provided at the hole on the air inlet plug 121 to avoid the entry of impurities during the suction process.

Further, the heating control system 300 includes a timing unit and a controller.

Specifically, the timing unit is used to judge whether the heating duration of the first heating plate 220 reaches or exceeds the first duration, and if so, sends a first time signal; the controller controls the control according to the first time signal The first heating element 220 stops heating.

The timing unit is also used to judge whether the heating duration of the second heating sheet 230 reaches or exceeds the preset duration of the first stage, and if so, sends a second time signal; the controller according to the second time signal The second heating unit is controlled to stop heating.

The timing unit is also used to judge whether the heating duration of the second heating sheet 230 reaches or exceeds the second duration, and if so, sends a third time signal; the controller controls the second heating according to the third time signal. The sheet 230 stops heating, and controls the first heating sheet 220 to heat the cigarettes.

The timing unit is also used for judging whether the duration of heating the first heating sheet 220 reaches or exceeds the preset duration of the second stage, and if so, sends out a fourth time signal; the controller controls all the heating elements according to the fourth time signal. The first heating element 220 stops heating.

The above non-uniform heating control based heat not burn cigarette, wherein, preferably, the heating control system further includes a first temperature detection module and a second temperature detection module, the first temperature detection module and the The first heating sheet is connected, and the second temperature detection module is connected with the second heating sheet. The temperature detection of the heating element by the temperature detection module is continuous detection.

In a specific embodiment, as shown in FIG. 4 , the heating control system 300 can control the temperature of the heat-not-burn cigarette according to the following control method:

Step S1, the controller controls the first heating plate 220 and the second heating plate 230 to heat the cigarettes in the first stage.

Step S2: Determine whether the heating duration of the first heating element 220 reaches or exceeds the first duration t ₁ through the timing unit; if so, go to Step S3.

In step S3, the controller stops the heating of the first heating element 220 and keeps the heating of the second heating element 230.

Step S4, determine whether the heating duration of the second heating sheet 230 reaches or exceeds the preset duration of the first stage; if yes, go to step S5; if not, keep the second heating sheet 230 to continue heating.

Step S5 , stopping the heating of the second heating plate 230 .

In this way, the first heating sheet 220 and the second heating sheet 230 respectively heat the cigarettes in different time periods independently, completing the preheating of the cigarettes before smoking, and at the same time preventing the cigarettes from being overheated and producing harmful substances, affecting the subsequent Suck the taste.

Step S6, the second heating plate 230 is activated by the controller to perform the second-stage heating.

Among them, the first stage is the cigarette preheating stage, and the second stage is the user's smoking stage.

Step S7, check whether the temperature of the first heat generating sheet is lower than the third temperature value T3; if yes, go to step S8; if not, go to step S9.

Wherein, the third temperature value may be 170°C to 230°C, preferably 210°C in this embodiment.

In step S8, the first heating element 220 is controlled to be heated, and step S7 is performed again.

Step S9, stop the heating of the first heat generating sheet 220, and perform step S7 again.

Among them, since the second heating area corresponding to the second heating sheet 230 on the cigarette is continuously heated, part of the heat will be transferred to the first heating area corresponding to the first heating sheet 220. At this time, even if the first heating area is not Appropriate temperature can still be maintained after being heated externally, thereby ensuring that the tobacco material in the first heating zone can quickly reach a sufficient temperature to be decomposed normally when heated in the next stage, thereby ensuring the user's smoking taste.

It should be noted that the above steps S7-S9 may not be executed, that is, the first heat generating sheet 220 is in an inactive control state during the period t ₁ -t ₂ , and the process proceeds from step S6 to step S10 .

Step S10, determine whether the heating duration of the second heating sheet 230 reaches or exceeds the second duration t ₂ ; if yes, go to step S11 ; if not, keep the second heating sheet 230 to continue heating.

Step S11 , stopping the heating of the second heating element 230 , and starting and maintaining the heating of the first heating element 220 .

At this time, because the second heating area on the cigarette has been continuously heated for a long time, the tobacco material located in the second heating area has the risk of excessive decomposition to produce harmful substances. After two time periods t ₂ , the heating of the second heating zone is stopped, and the heating of the first heating zone is switched to improve the decomposition efficiency of the tobacco material in the first heating zone. While avoiding excessive heating of the cigarette, Ensure that the cigarettes can provide uniform smoke and ensure the taste of smoking.

Step S12, judging whether the heating duration of the first heating sheet 220 reaches or exceeds the preset duration t _II in the second stage; if so, go to step S13; if not, keep the first heating sheet 220 to continue heating.

Step S13 , stopping the heating of the first heat generating sheet 220 .

Further, the heating control system 300 further includes a first temperature detection module and a second temperature detection module, the first temperature detection module is connected with the first heating plate 220, and the second temperature detection module is connected with the second temperature detection module The heat generating sheet 230 is connected.

Further, before step S2, the method further includes:

In step S201, the first temperature detection module detects whether the temperature of the first heating element 220 reaches or exceeds the first temperature value T1; if so, go to step S202.

Wherein, the first temperature value may be 150°C to 200°C, preferably 180°C in this embodiment. As shown in FIG. 4 , the time corresponding to the intersection of the heating temperature change curve of the first heating element 220 and the heating temperature changing curve of the second heating element 230 is t ₁ , and the temperature is 180° C. The heating element 220 stops heating, while the second heating element 230 continues to heat.

In addition, as shown in FIG. 4 , during the time period from _t1 to _t1-1 , the first heating plate 220 stops heating, while the second heating plate 230 continues to heat, so that part of the heat in the second heating area on the cigarette will be heated. Conducted to the first heat receiving area, and then the temperature of the first heat receiving area will increase slightly.

In step S202 , the heating of the first heating sheet 220 is stopped, and the heating of the second heating sheet 230 is kept continuously.

Further, before step S4, the method further includes:

In step S401, the second temperature detection module detects whether the heating temperature of the second heating plate 230 reaches or exceeds the second temperature value T2; if so, go to step S402.

The second temperature value may be 180°C to 230°C, and in this embodiment, the second temperature value is 210°C.

Step S402 , stopping the heating of the second heating plate 230 .

As shown in FIG. 4 , the temperature corresponding to the second heat generating sheet 230 at time tI _-1 is the above-mentioned second temperature value, that is, 210°C. At this time tI _-1 , the first heated area on the cigarette is subjected to heat transfer from the second heated area, and its temperature value is higher than the first temperature value by 180°C, but lower than the second temperature value by 210°C.

Further, in the above step S7, whether the temperature of the first heating plate 220 is lower than the third temperature value T3 may be detected by the first temperature detection module. In this embodiment, the third temperature value T3 may be the same as the second temperature value T2, both being 210°C.

Further, before step S10, the method further includes:

In step S101, the second temperature detection module detects whether the heating temperature of the second heating element 230 reaches or exceeds the fourth temperature value T4; if not, the second heating element keeps heating; if so, go to step S102.

Wherein, the fourth temperature value may be 200°C to 250°C; in this embodiment, it is preferably 230°C.

In step S102, the heating of the second heating plate 230 is stopped, and the process returns to step S101.

As shown in FIG. 4 , between the time _t1-1 and _t2 , since the second heating element 230 continuously maintains the temperature through a controllable heating process, the time corresponding to when the temperature reaches 230° C. is _t2 . In order to avoid The second heating area on the cigarette decomposes harmful substances due to excessive heating. When the time of the second heating sheet reaches or exceeds the second duration t ₂ , the heating of the second heating sheet 230 can be stopped at this time, and the first heating sheet can be started. Heating of sheet 220.

Further, in step S11, the second heat generating sheet 230 may be in an inactive control state during the period t ₂ -t _II . The inactive control state means that the controller controls whether to heat the second heating plate 230 according to the time signal, rather than the temperature signal.

It should be noted that the second heating sheet 230 can also be controlled in the following manner:

Step S1101: Detect whether the temperature of the second heating plate 230 is lower than the fifth temperature value T5 during the period t ₂ -t _II ; if yes, go to step S1102; if not, go to step S1103.

In step S1102, the second heating plate 230 is controlled to be heated, and step S1101 is repeated.

In step S1103, the heating of the second heat generating sheet 230 is stopped, and step S1101 is repeated. Wherein, the fifth temperature value may be 150°C to 250°C, and is preferably 210°C in this embodiment.

Further, before step S12, the method may further include:

In step S1201, the first temperature detection module detects whether the heating temperature of the first heating plate 220 reaches or exceeds the sixth temperature value T6; if not, the first heating plate 220 keeps heating; if so, go to step S1202.

Wherein, the sixth temperature value may be 200°C to 250°C; in this embodiment, it is preferably 230°C.

In step S1202, the heating of the first heating plate 220 is stopped, and the process returns to step S1201.

Further, the heating control system 300 further includes an intake air temperature detection module and an exhaust air temperature detection module, the intake air temperature detection module is arranged on the air inlet 120 , and the outlet air temperature detection module is arranged on the air outlet 110 .

Before the heater works, the intake air temperature detection module is used to detect whether the temperature at the intake port 120 reaches or exceeds the preparatory intake air temperature value, wherein the preparatory intake air temperature value may be 12°C to 25°C, In this embodiment, it is preferably 15°C; if yes, send out a first intake air temperature signal; if not, send out a second intake air temperature signal; the controller is used to set the first intake air temperature signal according to the first intake air temperature signal The preset duration of one stage is the first preset duration _t1-1 of the first stage; the controller is further configured to set the preset duration of the first stage to be the first stage according to the second intake air temperature signal The second preset duration t _{I -2} is greater than or equal to the first preset duration t _I-1 .

It should be noted that the preset duration of the first stage represents the total duration of the cigarette preheating stage before smoking. Among them, the temperature detection on the intake side can be the detection of the ambient temperature. If the detected temperature on the intake side reaches or exceeds 15°C, such as in a hot summer, it means that the smoking environment is high, and the cigarettes do not need to be pre-heated. Heat for a longer time to reach the suction temperature. However, if the detected intake air temperature value is less than 15°C, such as in cold winter, it means that the ambient temperature for smoking is low, and the cigarettes need a long time of preheating to reach the smoking temperature; When the intake air temperature value is less than 15°C, the _t1 time can also be extended, that is, the working time of the first heating element can be increased, so as to increase the heat generated by the heater and thus achieve the suction condition. Therefore, no matter under the condition of too high or too low ambient temperature, the cigarette can be preheated to the standard smoking temperature, which ensures the normal thermal decomposition of the tobacco material, and avoids setting a fixed preheating time that cannot compensate for the environment. The effect of temperature conditions on the decomposition of tobacco material.

For the convenience of description, this embodiment only takes the smoking of cigarettes in an environment above 15°C as an example for description, that is, the preset duration of the first stage is t _I-1 , as shown in FIG. 4 .

The outlet temperature detection module is used to detect whether the temperature at the outlet 110 reaches or exceeds a preset outlet temperature value, and if so, sends an outlet temperature signal; the controller stops the first heating according to the outlet temperature signal. The sheet 220 and the second heat generating sheet 230 are heated.

Wherein, the preset gas outlet temperature value may be 40°C to 120°C, which may be specifically set according to actual conditions. For example, when the filter tip of the heat-not-burn cigarette has a large suction resistance, the preset air outlet temperature value may be 60°C to 120°C, and when the filter tip is a filter tip with low suction resistance, the preset air outlet temperature value may be It is 40 ℃～100 ℃.

During the smoking process, when the temperature of the outlet side exceeds the above-mentioned preset outlet temperature value, the user will have a bad feeling of "scalding the mouth". At this time, the heating of the first heating zone and the second heating zone can be stopped to avoid The temperature rises excessively to ensure the user's smoking experience.

Further, during the heating operation, that is, during the heating process of the first stage and the second stage, the intake air temperature detection module detects whether the temperature of the intake air side of the heat-not-burn cigarette reaches or exceeds the working intake air temperature value; If so, a third intake air temperature signal is issued. Wherein, the working intake air temperature value may be 50°C.

The controller stops the heating of the first heating element 220 and the second heating element 230 according to the third intake air temperature signal.

It can be understood that during the smoking process, the high temperature heat when the tobacco material is thermally decomposed will affect the temperature of the intake side of the heat-not-burn cigarette, resulting in the detected temperature value on the intake side being appropriately higher than the ambient temperature. However, When the temperature value of the intake side during puffing exceeds the above-mentioned working intake air temperature value of 50°C, it indicates that the ambient temperature is too high or the internal temperature of the smoking device is too high. At this time, the first heating element 220 and the second heating element 230 can be stopped. heating to avoid unforeseen risks.

In addition, between the air outlet 110 and the heating assembly 200, a cigarette holder 140 is also arranged. The cigarette holder 140 can be a cylindrical structure, and the middle part of the cigarette holder 140 is recessed inwardly into an arc shape, so that the cigarette holder 140 is inwardly curved. The inner diameter of the middle part of the cigarette holder 140 is smaller than the inner diameter of the two ends. As shown in FIG. 1 , when the cigarette is inserted into the cigarette holder 140 , the part with the smaller inner diameter on the cigarette holder 140 is slightly elastic when squeezed by the cigarette holder. deformation, so that the cigarette can be clamped and fixed.

Wherein, in order to achieve slight elastic deformation of the cigarette holder 140, the material of the cigarette holder 140 may be ABS or PEEK. Of course, the cigarette holder 140 can also be made of other materials that can realize the elastic deformation of the cigarette holder 140 , which is not limited in this embodiment.

In addition, the cigarette holder 140 can also be an elastic body such as an O-ring, the inner diameter of which is not greater than the outer diameter of the cigarette, so that the cigarette can be squeezed and fixed.

The cigarette case body 100 is also rotatably provided with a rotating cover 130, which can close or open the air outlet 110 through its own rotation. Specifically, the rotating cover 130 can rotate around a point outside the air outlet 110 as the center, and the projection of the rotating cover 130 to the upper cover (not shown in the figure) direction of the smoking device at any time during the rotation falls within the range of the upper cover. During the rotation process, the included angle formed by any point on the rotating cover 130 except the point coincident with the rotation center and the line connecting the rotation center is not greater than 180°.

Wherein, the shape of the rotating cover 130 may be, but not limited to, an oval shape, a circle shape, and a gear shape.

The heat-not-burn cigarette based on the non-uniform heating control provided by the embodiment of the present invention realizes non-uniform heating of different areas of the cigarette in different stages of the smoking process, and reasonably adjusts the cumulative heating process of the tobacco material in the entire working stage. It effectively avoids the increase of harmful substances and poor consistency of smoke caused by premature overheating of cigarettes, which affects the taste of smoking; and non-uniform heating control can also improve energy utilization and reduce heat dissipation.

So far, the various embodiments of the present disclosure have been described in detail. Some details that are well known in the art are not described in order to avoid obscuring the concept of the present disclosure. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

While some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art will appreciate that the above examples are provided for illustration only, and are not intended to limit the scope of the present disclosure. Those skilled in the art should understand that, without departing from the scope and spirit of the present disclosure, the above embodiments can be modified or some technical features can be equivalently replaced. The scope of the present disclosure is defined by the appended claims.

Claims (10)

1. A non-combustible heated cigarette based on non-uniform heating control, comprising:

the cigarette case comprises a cigarette case body (100), wherein a heater is arranged in the cigarette case body (100);

the heating assembly (200) is arranged in the heater, a heating space (211) for penetrating cigarettes is arranged in the heating assembly (200), and one or more than two heating parts are arranged on the heating assembly (200) at intervals;

the heating control system (300) is arranged in the cigarette case body (100), and the heating control system (300) is connected with the heating assembly (200) and is used for controlling the heating part area and/or time-interval independent heat supply;

a battery assembly (400) disposed in the smoke housing body (100), and the battery assembly (400) is connected with the heating control system (300).

2. A non-uniform heating control-based non-combustible cigarette according to claim 1, wherein the heating assembly (200) comprises a heat pipe (210), a first heat generating fin (220) and a second heat generating fin (230), the first heat generating fin (220) and the second heat generating fin (230) are arranged on an outer side wall of the heat pipe (210) at intervals, the heat receiving space (211) is formed in the heat pipe (210), and the arrangement positions of the first heat generating fin (220) and the second heat generating fin (230) on the heat pipe (210) form the heating portion.

3. A heated non-combustible cigarette based on non-uniform heating control according to claim 2, further comprising an insulation assembly (600), the insulation assembly (600) being disposed outside the heating assembly (200).

4. A non-uniform heating control-based non-combustible cigarette according to claim 3, wherein the heat insulation assembly (600) comprises a vacuum tube layer (610), a heat insulation cotton layer (620) and a heat insulation tube layer (630) from inside to outside in sequence, the vacuum tube layer (610) is sleeved outside the heat conduction tube (210), and the first heat generating sheet (220) and the second heat generating sheet (230) are arranged between the vacuum tube layer (610) and the heat conduction tube (210).

5. A non-combustible cigarette based on non-uniform heating control according to claim 2, wherein the cigarette case body (100) is provided with an air inlet (120) and an air outlet (110), and the air inlet (120) and the air outlet (110) are respectively provided at both ends of the heater.

6. A non-combustible cigarette based on non-uniform heating control according to claim 5, wherein the heater further comprises a support assembly (500), one end of the heating assembly (200) far away from the air outlet (110) is fixedly connected with the support assembly (500), an air flow channel (530) is arranged in the support assembly (500), and two ends of the air flow channel (530) are respectively communicated with the heated space (211) and the air inlet (120).

7. A heated non-combustible cigarette based on non-uniform heating control according to claim 5 further comprising an air inlet plug (121), the air inlet plug (121) being removably arranged in the air inlet (120).

8. A heated non-combustible cigarette based on non-uniform heating control according to claim 5, characterized in that the heating control system (300) comprises a timing unit and a controller;

the timing unit is used for judging whether the heating time of the first heating piece (220) reaches or exceeds a first time, and if so, sending a first time signal; the controller controls the first heating sheet (220) to stop heating according to the first time signal;

the timing unit is also used for judging whether the heating time length of the second heating sheet (230) reaches or exceeds the preset time length of the first stage, and if so, a second time signal is sent out; the controller controls the second heating unit to stop heating according to the second time signal;

the timing unit is also used for judging whether the heating time length of the second heating sheet (230) reaches or exceeds a second time length, and if so, a third time signal is sent out; the controller controls the second heating sheet (230) to stop heating according to the third time signal and controls the first heating sheet (220) to heat the cigarettes;

the timing unit is also used for judging whether the heating time length of the first heating sheet (220) reaches or exceeds the preset time length of the second stage, and if so, a fourth time signal is sent out; the controller controls the first heating sheet (220) to stop heating according to the fourth time signal.

9. A non-uniform heating control-based non-combustible heated cigarette according to claim 8, wherein the heating control system (300) further comprises an inlet air temperature detection module disposed on the air inlet (120) and an outlet air temperature detection module disposed on the air outlet (110);

before the heater works, the air inlet temperature detection module is used for detecting whether the temperature at the air inlet (120) reaches or exceeds a prepared air inlet temperature value, and if so, a first air inlet temperature signal is sent out; if not, sending a second air inlet temperature signal;

the controller is used for setting the first-stage preset time length as a first preset time length of a first stage according to the first inlet air temperature signal;

the controller is further used for setting the first-stage preset time length as a second preset time length of the first stage according to the second inlet air temperature signal, wherein the second preset time length is greater than or equal to the first preset time length;

during the working period of the heater, the air inlet temperature detection module is used for detecting whether the temperature at the air inlet reaches or exceeds a working air inlet temperature value, and if so, a third air inlet temperature signal is sent out;

the controller stops heating the first heating sheet and the second heating sheet according to the third air inlet temperature signal;

the air outlet temperature detection module is used for detecting whether the temperature at the air outlet (110) reaches or exceeds a preset air outlet temperature value, and if so, sending an air outlet temperature signal;

the controller stops the first heating sheet (220) and the second heating sheet (230) from heating according to the air outlet temperature signal.

10. A non-uniform heating control-based non-combustible cigarette according to claim 8, wherein the heating control system (300) further comprises a first temperature detection module and a second temperature detection module, the first temperature detection module is connected with the first heat generating sheet (220), and the second temperature detection module is connected with the second heat generating sheet (230).

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