Heating cigarette smoking set and air inlet control method thereof

Abstract

The invention belongs to the technical field of heating cigarette smoking sets, and discloses a heating cigarette smoking set and an air inlet control method thereof.In the heating cigarette smoking set, a shell is provided with a containing cavity used for containing a cigarette, an airflow channel communicated with the containing cavity and an air inlet communicated with the airflow channel, and external air enters the air inlet; the heating element can generate heat and is provided with a first end arranged in the containing cavity and a second end arranged in the airflow channel, the first end is used for heating a cigarette arranged in the containing cavity, and the airflow generator is arranged in the airflow channel and used for blowing air to the containing cavity. The heat conduction structure is arranged in the airflow channel and at least partially makes contact with the heating element, and the heat conduction structure can conduct heat exchange with gas in the airflow channel, so that heat of the heating element can be conducted to the gas in the airflow channel through the heat conduction structure, the gas is preheated, and the temperature of the gas entering the containing cavity is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of heated cigarette smoking articles, and in particular to a heated cigarette smoking article and an air intake control method thereof. Background Art

[0002] Heated cigarettes are a type of new tobacco product. The principle is to bake cigarettes at low temperature through electric heating, so that the cigarettes produce smoke without burning. Among them, heated cigarettes usually have a accommodating cavity for placing cigarettes and an air flow channel for gas to enter. The heating element used to heat the cigarettes is usually partially arranged in the accommodating cavity for heating the cigarettes, and the other part is arranged outside the accommodating cavity for connecting other structural parts. The heat of the part of the heating element arranged outside the accommodating cavity is easily dissipated through the structural parts, resulting in energy waste. Summary of the invention

[0003] According to one aspect of the present invention, the present invention provides a smoking device for heating cigarettes to solve the problem in the prior art that the heat of a part of the heating element arranged outside the accommodating cavity is easily dissipated through the structural member, resulting in energy waste.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] Heat-to-roll smoking articles, including:

[0006] The housing has a housing cavity for accommodating cigarettes, an air flow channel connected to the housing cavity, and an air inlet connected to the air flow channel, wherein the air inlet is used for external air to enter;

[0007] a heating element capable of generating heat and having a first end disposed in the accommodating cavity and a second end disposed in the airflow channel, wherein the first end is used to heat the cigarette disposed in the accommodating cavity;

[0008] an air flow generator, disposed in the air flow channel and used to blow gas toward the accommodating cavity;

[0009] The heat-conducting structure is arranged in the air flow channel and is in at least partial contact with the heating element. The heat-conducting structure can perform heat exchange with the gas in the air flow channel.

[0010] As a preferred solution for heating cigarette smoking articles, the heat-conducting structure is a foam material filled in the airflow channel.

[0011] As a preferred solution for heating cigarette smoking articles, the heat-conducting structure is provided with ventilation holes.

[0012] As a preferred solution for heating cigarette smoking articles, the heat-conducting structure is in the shape of a hollow tube, the airflow channel is connected to the inner cavity of the heat-conducting structure, and the heating element is arranged inside the heat-conducting structure.

[0013] As a preferred solution for heating cigarette smoking utensils, the heat-conducting structure is in the shape of a hollow tube, the airflow channel is connected to the inner cavity of the heat-conducting structure, the heating element is arranged outside the heat-conducting structure, an insulating layer is arranged between the heating element and the heat-conducting structure, and the air vents pass through the heat-conducting structure, the insulating layer and the heating element in sequence.

[0014] According to another aspect of the present invention, a method for controlling air intake of a heated cigarette smoking article is provided, which is implemented by the heated cigarette smoking article. The method for controlling air intake of a heated cigarette smoking article includes a start-up control method, and the start-up control method includes:

[0015] S100: confirming that the heated cigarette smoking device is turned on, and supplying power to the heating element;

[0016] S200: Control the switch or power of the airflow generator so that the gas flow inside the accommodating chamber is, as the operation time of the heated cigarette smoking device increases, an early gas flow, a mid-term gas flow and a late gas flow, respectively, and the early gas flow is greater than the mid-term gas flow, and the late gas flow is greater than the mid-term gas flow.

[0017] As a preferred solution of the method for controlling air intake of heated cigarette smoking articles, step S200 includes:

[0018] S2011: Turn on the airflow generator;

[0019] S2012: Determine that the airflow generator has been operating for a first duration;

[0020] S2013: reducing the power of the airflow generator;

[0021] S2014: Determine that the airflow generator has been operating for a second duration, and the second duration is greater than the first duration;

[0022] S2015: Increase the power of the airflow generator.

[0023] As a preferred solution of the air intake control method of the heated cigarette smoking device, the controller of the heated cigarette smoking device has a built-in target curve of the gas flow rate inside the accommodating cavity changing with the operation time of the heated cigarette smoking device, and the early gas flow rate of the gas decreases with the increase of time, and the late gas flow rate of the gas increases with the increase of time;

[0024] Step S200 includes:

[0025] S2021: Turn on the airflow generator;

[0026] S2022: Acquire the actual gas flow rate inside the accommodating cavity and the current operating time of the heated cigarette smoking device;

[0027] S2023: Compare the actual gas flow rate with the target gas flow rate corresponding to the current running time in the target curve;

[0028] If the actual gas flow rate is greater than the target gas flow rate corresponding to the current running time in the target curve, step S2024 is executed; if the actual gas flow rate is less than the target gas flow rate corresponding to the current running time in the target curve, step S2025 is executed;

[0029] S2024: reducing the power of the airflow generator;

[0030] S2025: Increase the power of the airflow generator.

[0031] As a preferred solution of the air intake control method of the heated cigarette smoking article, the controller of the heated cigarette smoking article has a built-in temperature target curve of the temperature inside the accommodating cavity changing with the operation time of the heated cigarette smoking article;

[0032] Step S200 includes:

[0033] S2031: Turn on the airflow generator;

[0034] S2032: Acquire the actual temperature inside the accommodating cavity and the current operation time of the heated cigarette smoking device;

[0035] S2033: Compare the actual temperature with the target temperature corresponding to the current operating time in the temperature target curve;

[0036] If the actual temperature is greater than the target temperature corresponding to the current operating time in the temperature target curve, step S2034 is executed; if the actual temperature is less than the target temperature corresponding to the current operating time in the temperature target curve, step S2035 is executed;

[0037] S2034: increasing the power of the airflow generator;

[0038] S2035: Reduce the power of the airflow generator.

[0039] As a preferred solution of the air intake control method for heated cigarette smoking articles, the startup control method further includes the following steps, which are located after step S100 and are executed synchronously with step S200:

[0040] S300: Obtaining the air pressure inside the accommodation chamber, and comparing the air pressure with a set pressure;

[0041] If the air pressure is less than the set pressure, executing step S400;

[0042] S400: increasing the power of the airflow generator, and reducing the power of the airflow generator after a set time has passed.

[0043] As a preferred solution of the method for controlling air intake of heated cigarette smoking articles, step S200 includes:

[0044] S2041: Turn on the airflow generator;

[0045] S2042: Determine that the airflow generator has been operating for a first duration;

[0046] S2043: Turn off the airflow generator;

[0047] S2044: Determine that the airflow generator has been operating for a second duration, and the second duration is greater than the first duration;

[0048] S2045: Reopen the airflow generator.

[0049] As a preferred solution of the air intake control method of the heated cigarette smoking article, the controller of the heated cigarette smoking article has a built-in temperature target curve of the temperature inside the accommodating cavity changing with the operation time of the heated cigarette smoking article;

[0050] Step S200 includes:

[0051] S2051: Turn on the airflow generator;

[0052] S2052: Acquire the actual temperature inside the accommodating cavity and the current operation time of the heated cigarette smoking device;

[0053] S2053: Compare the actual temperature with the target temperature corresponding to the current operating time in the temperature target curve;

[0054] If the actual temperature is greater than the target temperature corresponding to the current operating time in the temperature target curve, step S2054 is executed; if the actual temperature is less than the target temperature corresponding to the current operating time in the temperature target curve, step S2055 is executed;

[0055] S2054: confirming that the airflow generator is turned on;

[0056] S2055: Confirm that the airflow generator is turned off.

[0057] As a preferred embodiment of the air intake control method for heated cigarette smoking articles, the air intake control method for heated cigarette smoking articles further includes a closing control method, and the closing control method includes:

[0058] S500: confirming that the heated cigarette smoking device is turned off, and turning off the heating element;

[0059] S600: Confirm that the airflow generator is turned on with a preset power, and turn off the airflow generator after the airflow generator runs for a preset time.

[0060] The beneficial effects of the present invention are:

[0061] The present invention provides a smoking device for heating cigarettes, including a shell, a heating element, an airflow generator and a heat-conducting structure. The shell has a receiving cavity for receiving cigarettes, an airflow channel connected to the receiving cavity and an air inlet connected to the airflow channel, and the air inlet is used for external gas to enter. The heating element can generate heat and has a first end arranged in the receiving cavity and a second end arranged in the airflow channel. The first end is used to heat the cigarettes arranged in the receiving cavity so that the cigarettes are heated to generate smoke. The user inhales the gas in the receiving cavity into the body by inhaling. The airflow generator is arranged in the airflow channel and is used to blow gas to the receiving cavity, so that the high-temperature gas and aerosol in the receiving cavity can be blown out before the user inhales. In addition, during the inhalation process, fresh air can be blown into the receiving cavity through the airflow generator to circulate the gas and avoid the generation of undesirable substances caused by excessive local temperature. The heat-conducting structure is arranged in the airflow channel and is in at least partial contact with the heating element. The heat-conducting structure can exchange heat with the gas in the airflow channel, so that the heat of the heating element can be transferred to the gas in the airflow channel through the heat-conducting structure. On the one hand, the gas can be preheated to increase the temperature of the gas entering the accommodating cavity. On the other hand, the temperature of the second end of the heating element can be fully utilized to avoid energy waste.

[0062] The present invention also provides a method for controlling the air intake of a heated cigarette smoking device, which is implemented by the above-mentioned heated cigarette smoking device. The method for controlling the air intake of a heated cigarette smoking device includes a start-up control method. In the start-up control method, it is confirmed that the heated cigarette smoking device is turned on, and power is supplied to the heating element so that the heating element starts to work to heat the cigarette. Subsequently, the switch or power size of the airflow generator is controlled so that the gas flow inside the accommodating cavity is the early gas flow, the mid-term gas flow and the late gas flow in sequence as the running time of the heated cigarette smoking device increases, and the early gas flow is greater than the mid-term gas flow, and the late gas flow is greater than the mid-term gas flow, thereby controlling the gas flow inside the accommodating cavity. Since the aerosol generation matrix is ​​heated unevenly in the early stage of the startup of the heated cigarette smoking device, the smoke output is small. In addition, as the cigarette is baked, its effective substances are gradually consumed, and the amount of smoke generated by the cigarette in the late stage of the startup of the heated cigarette smoking device will also decrease. By controlling the gas flow rate inside the accommodating chamber to increase the gas flow rate inside the accommodating chamber in the early stage of starting the heated cigarette device, the cigarettes can be heated evenly and the smoke output can be increased. In the middle stage of starting the heated cigarette device, after the cigarettes are heated evenly, the gas flow rate inside the accommodating chamber is reduced. In addition, in the late stage of starting the heated cigarette device, the gas flow rate inside the accommodating chamber is increased again to avoid a reduction in smoke volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 is a schematic structural diagram of a heated cigarette smoking device in an embodiment of the present invention;

[0064] Figure 2 is a cross-sectional view of a heated cigarette smoking device according to an embodiment of the present invention;

[0065] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0066] Figure 4 is a first structural schematic diagram of a heating element and a heat-conducting structure in an embodiment of the present invention;

[0067] Figure 5 is a second structural schematic diagram of a heating element and a heat-conducting structure in an embodiment of the present invention;

[0068] Figure 6 is a third structural schematic diagram of a heating element and a heat-conducting structure in an embodiment of the present invention;

[0069] Figure 7 is a first flow chart of the startup control method in an embodiment of the present invention;

[0070] Figure 8 is a second flow chart of the startup control method in an embodiment of the present invention;

[0071] Fig. 9is a first relationship diagram of the flow rate at the output end of the airflow generator according to an embodiment of the present invention changing with time;

[0072] Fig.10 is a third flow chart of the startup control method in an embodiment of the present invention;

[0073] Fig.11 is a fourth flow chart of the startup control method in an embodiment of the present invention;

[0074] Fig.12 is a second relationship diagram of the flow rate at the output end of the airflow generator according to the embodiment of the present invention changing with time;

[0075] Fig.13 is a fifth flow chart of the startup control method in an embodiment of the present invention;

[0076] Fig.14 is a sixth flow chart of the startup control method in an embodiment of the present invention;

[0077] Fig.15 is a third relationship diagram of the flow rate at the output end of the airflow generator according to the embodiment of the present invention changing with time;

[0078] Fig.16 is a seventh flow chart of the startup control method in an embodiment of the present invention;

[0079] Fig.17 4 is a flow chart of a shutdown control method in an embodiment of the present invention.

[0080] In the figure:

[0081] 100, cigarettes;

[0082] 1. Shell; 11. Accommodating cavity; 12. Air flow channel; 121. Cavity; 13. Air inlet; 14. Top wall; 15. Bottom wall; 16. Side wall;

[0083] 2. Heating element;

[0084] 3. Airflow generator;

[0085] 4. Power supply;

[0086] 5. Controller;

[0087] 6. Power button;

[0088] 7. Heat conducting structure; 71. Air vent; 72. Connector;

[0089] 8. Insulation layer; 81. Glaze layer. DETAILED DESCRIPTION

[0090] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0091] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0092] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0093] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0094] Embodiment 1

[0095] Heated cigarettes are a type of new tobacco product. The principle is to bake cigarettes at low temperature through electric heating, so that the cigarettes produce smoke without burning. Among them, heated cigarettes usually have a accommodating cavity for placing cigarettes and an air flow channel for gas to enter. The heating element used to heat the cigarettes is usually partially arranged in the accommodating cavity for heating the cigarettes, and the other part is arranged outside the accommodating cavity for connecting other structural parts. The heat of the part of the heating element arranged outside the accommodating cavity is easily dissipated through the structural parts, resulting in energy waste.

[0096] In this regard, the present embodiment provides a heating cigarette smoking device to solve the problem in the prior art that the heat of a part of the heating element arranged outside the accommodating cavity is easily dissipated through the structural parts, resulting in energy waste.

[0097] Reference Figure 1-Figure 3 The heating cigarette smoking device comprises a housing 1, a heating element 2, an airflow generator 3 and a heat-conducting structure. The housing 1 has a receiving chamber 11 for receiving a cigarette 100, an airflow channel 12 connected to the receiving chamber 11 and an air inlet 13 connected to the airflow channel 12. The air inlet 13 is used for external gas to enter. The heating element 2 can generate heat and has a first end arranged in the receiving chamber 11 and a second end arranged in the airflow channel 12. The first end is used to heat the cigarette 100 arranged in the receiving chamber 11 so that the cigarette 100 is heated to generate smoke. The user inhales the gas in the receiving chamber 11 into the body through inhalation. The airflow generator 3 is arranged in the airflow channel 12 and is used to blow gas to the receiving chamber 11, so that the high-temperature gas and aerosol in the receiving chamber 11 can be blown out before the user inhales. In addition, during the inhalation process, fresh air can be blown into the receiving chamber 11 through the airflow generator 3 to circulate the gas and avoid the generation of undesirable substances caused by excessive local temperature. The heat-conducting structure 7 is arranged in the airflow channel 12 and is in at least partial contact with the heating element 2. The heat-conducting structure 7 can exchange heat with the gas in the airflow channel 12, so that the heat of the heating element 2 can be transferred to the gas in the airflow channel 12 through the heat-conducting structure 7. On the one hand, the gas can be preheated to increase the temperature of the gas entering the accommodating cavity 11. On the other hand, the temperature of the second end of the heating element 2 can be fully utilized to avoid energy waste.

[0098] Optionally, the airflow channel 12 includes a cavity 121 located between the accommodating cavity 11 and the outlet end of the airflow generator 3 , and the heat-conducting structure 7 may be disposed in the cavity 121 .

[0099] Among them, the specific structures of the heat conducting structure 7 are as follows:

[0100] One of the structures is Figure 4As shown, the heat-conducting structure 7 is a foam material filled in the air flow channel 12, and the foam material plays a role in heat exchange and ventilation. Specifically, holes are arranged inside the foam material, and the holes are connected to the air flow channel 12. The air flow can pass through the holes and simultaneously exchange heat with the side walls of the holes, thereby heating the gas flowing through the holes. Optionally, the foam material is specifically an inorganic non-metallic material, such as graphite, diamond, carbon nanotubes, carbon fiber, graphene, boron nitride, aluminum nitride, silicon carbide, aluminum oxide and zinc oxide, or other polymer materials and composite materials, and the above materials are all porous materials to form holes. In addition, in the present embodiment, the heat-conducting structure 7 fills the cavity 121 so that all gases flowing therethrough will enter the holes and exchange heat with the heat-conducting structure 7. In other embodiments, the heat-conducting structure 7 may be arranged only in a part of the cavity 121, part of the gas will flow into the holes and exchange heat with the heat-conducting structure 7, while the other part of the gas will not flow through the heat-conducting structure 7 but will flow directly to the accommodating cavity 11. With such an arrangement, although the heating effect on the gas is weakened, the flow resistance of the gas can be reduced to ensure that sufficient gas always flows into the accommodating cavity 11.

[0101] Another structure such as Figure 5 As shown, the heat-conducting structure 7 is provided with an air hole 71, the heat-conducting structure 7 is in the shape of a hollow tube, the air flow channel 12 is connected to the inner cavity of the heat-conducting structure 7, and the heating element 2 is arranged inside the heat-conducting structure 7. Optionally, a plurality of air holes 71 are provided, and the plurality of air holes 71 are evenly provided on the outer wall of the heat-conducting structure 7, so that the gas flows through the inner cavity of the heat-conducting structure 7 and exchanges heat with the heating element 2. In addition, when the gas passes through the air holes 71 of the heat-conducting structure 7, it can also exchange heat with the heat-conducting structure 7 to further increase the temperature of the gas. Optionally, the heat-conducting structure 7 and the heating element 2 can be connected by a connector 72 made of a heat-conducting material to achieve the effect of connection and heat conduction, wherein a plurality of connectors 72 are provided, and the plurality of connectors 72 are arranged at intervals along the length direction of the heat-conducting structure 7.

[0102] Another structure such as Figure 6 As shown, the heat-conducting structure 7 is provided with an air vent 71, the heat-conducting structure 7 is in the shape of a hollow tube, the air flow channel 12 is connected to the inner cavity of the heat-conducting structure 7, and the heating element 2 is arranged outside the heat-conducting structure 7. An insulating layer 8 is arranged between the heating element 2 and the heat-conducting structure 7, and the air vent 71 passes through the heat-conducting structure 7, the insulating layer 8 and the heating element 2 in sequence. When the gas passes through the inner cavity of the heat-conducting structure 7 and the air vent 71, it can exchange heat with the heat-conducting structure 7 to increase the temperature of the gas. Optionally, the insulating layer 8 is arranged on the outer wall of the heat-conducting structure 7, and the heating element 2 is arranged on the outer wall of the insulating layer 8. The outer wall of the heating element 2 is also provided with a glaze layer 81 to prevent the heating element 2 from directly contacting the cigarette 100.

[0103] In addition, in some other embodiments, the heat-conducting structure 7 can also be made of a metal structure, such as nickel, iron, copper, stainless steel, alloy, etc. Optionally, the heat-conducting structure 7 is in a sheet shape and has a plurality of air holes 71, and the gas can also exchange heat with the heat-conducting structure 7 when passing through the air holes 71.

[0104] Optionally, the shell 1 includes a top wall 14 and a bottom wall 15 that are arranged opposite to each other, and a side wall 16 that is arranged between the top wall 14 and the bottom wall 15. The opening of the accommodating cavity 11 is located on the top wall 14, and the air inlet 13 is arranged in the middle part of the side wall 16, so that the air flow channel 12 can be arranged only on one side of the air inlet 13 close to the top wall 14, thereby reducing the length of the air flow channel 12, which occupies less space inside the shell 1, and can reserve more installation space for the installation of structures such as batteries.

[0105] Optionally, the gas from the air inlet 13 can only enter the accommodating chamber 11 through the airflow generator 3, so that only one airflow channel 12 is provided, and the gas can only flow through the airflow channel 12 and the airflow generator 3 to simplify the overall structure of the heated cigarette smoking device.

[0106] Optionally, the airflow generator 3 is one of a fan, a blower, a compressor and a vacuum pump, and the above structures can all play a role in blowing external air into the accommodating chamber 11.

[0107] Optionally, the heated cigarette smoking device further comprises a power source 4 arranged on the shell 1 , the power source 4 is used to supply power to the heating element 2 and the airflow generator 3 . In this embodiment, the power source 4 is a battery and is arranged in the space between the air inlet 13 and the bottom wall 15 of the shell 1 .

[0108] Optionally, the heated cigarette smoking device also includes a controller 5, which is electrically connected to a power source 4. The heating element 2 and the airflow generator 3 are both communicatively connected to the controller 5. The controller 5 can be powered by the power source 4, and the power source 4 can be controlled by the controller 5 to connect or disconnect the heating element 2 to turn on or off the heating element 2, so that the heating element 2 heats or turns off the heating of the cigarette 100 in the accommodating cavity 11. The airflow generator 3 can also be controlled to turn on or off by the controller 5, so that the airflow generator 3 blows external gas into the accommodating cavity 11 or stops blowing.

[0109] Optionally, the heated cigarette smoking device further comprises a power button 6 arranged on the housing 1 , the power button 6 is electrically connected to the controller 5 , and the user can control the heated cigarette smoking device to start or shut down by pressing the power button 6 .

[0110] Embodiment 2

[0111] In the traditional scheme of heating cigarette smoking devices, the aerosol generation matrix is ​​heated unevenly in the early stage of startup, and the smoke output is small; in addition, as the cigarette is baked, its effective substances are gradually consumed, and the amount of smoke generated by the cigarette in the later stage of startup of the heating cigarette smoking device will also decrease.

[0112] In this regard, this embodiment provides a method for controlling the air intake of a heated cigarette smoking device. The method for controlling the air intake of a heated cigarette smoking device is implemented by the above-mentioned heated cigarette smoking device. The method includes a start-up control method. Figure 7 , the startup control method includes the following steps.

[0113] S100: confirm that the heated cigarette smoking device is turned on, and supply power to the heating element 2.

[0114] Wherein, when the heated cigarette smoking device is in the closed state, the user presses the power button 6 to confirm that the heated cigarette smoking device is turned on.

[0115] S200: Control the switch or power of the airflow generator 3 so that the gas flow inside the accommodating chamber 11 is the early gas flow, the middle gas flow and the late gas flow in sequence as the operation time of the heated cigarette smoking device increases, and the early gas flow is greater than the middle gas flow, and the late gas flow is greater than the middle gas flow.

[0116] The gas flow rate inside the accommodating chamber 11 can be changed by controlling the switch or power of the airflow generator 3. Specifically, when the airflow generator 3 is turned on from off, or the power of the airflow generator 3 is increased, the gas flow rate at the output end of the airflow generator 3 increases, and the gas flow rate inside the accommodating chamber 11 can be increased. When the airflow generator 3 is turned off from on, or the power of the airflow generator 3 is reduced, the gas flow rate at the output end of the airflow generator 3 decreases, and the gas flow rate inside the accommodating chamber 11 can be reduced.

[0117] Through step S200, the gas flow rate inside the accommodating chamber 11 can be controlled. Since the aerosol generating matrix is ​​heated unevenly in the early stage of the heating cigarette device, the smoke output is small. By controlling the gas flow rate inside the accommodating chamber 11 to increase the gas flow rate inside the accommodating chamber 11 in the early stage of the heating cigarette device, the cigarette 100 can be heated evenly and the smoke output can be increased. In the middle stage of the heating cigarette device, after the cigarette 100 is heated evenly, the gas flow rate inside the accommodating chamber 11 is reduced. In addition, as the cigarette 100 is baked, its effective substances are gradually consumed, and the amount of smoke generated by the cigarette 100 in the late stage of the heating cigarette device will also decrease. In the late stage of the heating cigarette device, the gas flow rate inside the accommodating chamber 11 is increased again to avoid the reduction of smoke. Experiments show that increasing the gas flow rate inside the accommodating chamber 11 in the early and late stages of the heating cigarette device can make the cigarette 100 heated evenly, the smoke output is more stable, and it is not easy to produce undesirable substances.

[0118] Reference Figure 8 In this embodiment, step S200 includes the following steps.

[0119] S2011: Turn on the airflow generator 3.

[0120] S2012: Determine that the airflow generator 3 has been operating for a first duration.

[0121] The first duration can be considered as the time before the heating cigarette smoking device is started. During the first duration, the cigarette 100 is heated unevenly.

[0122] Specifically, the first duration can be pre-set and stored in the controller 5. When the airflow generator 3 is turned on, the timer is turned on. When the first duration is reached, it can be confirmed that the airflow generator 3 has worked for the first duration.

[0123] In addition, since there may be certain differences in the start-up time of the airflow generator 3 and the heating element 2 in some heated cigarette smoking devices, the first duration can also be obtained based on the working time of the heating element 2. Specifically, when the heating element 2 has worked for the first preset time, it can be considered that the airflow generator 3 has worked for the first duration.

[0124] S2013: Reduce the power of the airflow generator 3.

[0125] Reducing the power of the airflow generator 3 can reduce the gas flow at its output end, and can reduce the gas flow inside the accommodating chamber 11 to adapt it to the characteristics of heating the cigarette smoking article to start the mid-term cigarette 100.

[0126] S2014: Determine that the airflow generator 3 has been operating for a second duration, and the second duration is greater than the first duration.

[0127] The second duration can be considered as the early and middle time of starting the heated cigarette smoking device. During the first duration to the second duration, the heating condition of the cigarette 100 is better, and after the second duration, the effective substance of the cigarette 100 is consumed and the smoke output is affected.

[0128] Specifically, the second duration can be pre-set and stored in the controller 5. When the airflow generator 3 is turned on, the timer is turned on. When the second duration is reached, it can be confirmed that the airflow generator 3 has worked for the second duration.

[0129] In addition, since there may be certain differences in the start-up time of the airflow generator 3 and the heating element 2 in some heated cigarette smoking devices, the second duration can also be obtained based on the working time of the heating element 2. Specifically, when the heating element 2 has worked for the second preset time, it can be considered that the airflow generator 3 has worked for the second duration.

[0130] S2015: Increase the power of the airflow generator 3.

[0131] Increasing the power of the airflow generator 3 can increase the gas flow at its output end, and can increase the gas flow inside the accommodating chamber 11, so as to adapt it to the characteristics of the cigarette 100 in the late stage of heating the cigarette smoking device. In this embodiment, the flow size of the output end of the airflow generator 3 changes with time as shown in FIG. Fig. 9 shown.

[0132] Optionally, refer to Fig.10 The startup control method further includes the following steps which are located after step S100 and are executed synchronously with step S200.

[0133] S300: Obtain the air pressure inside the accommodating chamber 11, and compare the air pressure with the set pressure.

[0134] If the air pressure is less than the set pressure, step S400 is executed.

[0135] The air pressure inside the accommodating chamber 11 can be obtained by a pressure sensor disposed in the accommodating chamber 11 .

[0136] S400: increasing the power of the airflow generator 3, and reducing the power of the airflow generator 3 after a set time has passed.

[0137] Due to the continuous inhalation of the user, the air pressure inside the accommodating chamber 11 will decrease. In this regard, in the present embodiment, if it is detected that the air pressure is less than the set pressure, the power of the airflow generator 3 is increased, and the power of the airflow generator 3 is reduced after a set time, so as to blow a certain amount of gas into the accommodating chamber 11 to increase the air pressure inside the accommodating chamber 11.

[0138] Embodiment 3

[0139] This embodiment provides another method for controlling air intake of heated cigarette smoking articles. The difference between this method for controlling air intake of heated cigarette smoking articles and the start-up control method in the second embodiment is that the specific steps of step S200 in the start-up control method of the method for controlling air intake of heated cigarette smoking articles are different.

[0140] In this embodiment, the controller 5 of the heated cigarette smoking device has a built-in target curve of the gas flow inside the accommodating chamber 11 changing with the operation time of the heated cigarette smoking device, and the early gas flow of the gas decreases with time, and the late gas flow of the gas increases with time.

[0141] In this embodiment, the flow rate at the output end of the airflow generator 3 changes with time as shown in Fig.11 shown.

[0142] Reference Fig.12 In this embodiment, step S200 specifically includes the following steps.

[0143] S2021: Turn on the airflow generator 3.

[0144] S2022: Acquire the actual gas flow rate inside the accommodating chamber 11 and the current operating time of the heated cigarette smoking device.

[0145] The actual gas flow rate inside the accommodating chamber 11 can be obtained by a gas flow rate sensor disposed in the accommodating chamber 11 .

[0146] S2023: Compare the actual gas flow rate with the target gas flow rate corresponding to the current operating time in the target curve.

[0147] If the actual gas flow is greater than the target gas flow corresponding to the current operating time in the target curve, step S2024 is executed; if the actual gas flow is less than the target gas flow corresponding to the current operating time in the target curve, step S2025 is executed.

[0148] S2024: Reduce the power of the airflow generator 3.

[0149] If the actual gas flow is greater than the target gas flow corresponding to the current operating time in the target curve, it indicates that the actual gas flow inside the accommodating chamber 11 is too large at this time. Therefore, reducing the power of the airflow generator 3 can reduce the gas flow inside the accommodating chamber 11.

[0150] Optionally, after completing step S2024, return to step S2022 to obtain the actual gas flow inside the accommodating chamber 11 and the current operating time of the heated cigarette smoking device again, and determine how to adjust the power of the airflow generator 3 at this time.

[0151] S2025: Increase the power of the airflow generator 3.

[0152] If the actual gas flow rate is less than the target gas flow rate corresponding to the current operating time in the target curve, it indicates that the actual gas flow rate inside the accommodating chamber 11 is too small at this time. Therefore, increasing the power of the airflow generator 3 can increase the gas flow rate inside the accommodating chamber 11.

[0153] Optionally, after completing step S2025, return to step S2022 to obtain the actual gas flow inside the accommodating chamber 11 and the current operating time of the heated cigarette smoking device again, and determine how to adjust the power of the airflow generator 3 at this time.

[0154] Embodiment 4

[0155] This embodiment provides another method for controlling air intake of a heated cigarette smoking article. The difference between this method for controlling air intake of a heated cigarette smoking article and the start-up control method in the second embodiment is that the specific steps of step S200 in the start-up control method of the method for controlling air intake of a heated cigarette smoking article are different.

[0156] Since the change of gas flow rate will inevitably cause the change of temperature inside the heated cigarette smoking device, in this embodiment, the temperature inside the accommodating chamber 11 is used as the basis for adjusting the power of the airflow generator 3. Specifically, the controller 5 of the heated cigarette smoking device has a built-in temperature target curve of the temperature inside the accommodating chamber 11 changing with the operation time of the heated cigarette smoking device.

[0157] Reference Fig.13 , step S200 specifically includes the following steps.

[0158] S2031: Turn on airflow generator 3.

[0159] S2032: Acquire the actual temperature inside the accommodating chamber 11 and the current operation time of the heating cigarette smoking device.

[0160] Among them, the actual temperature inside the accommodating cavity 11 can be obtained through a temperature sensor set in the accommodating cavity 11; or, a thermistor is set at a position close to the accommodating cavity 11 of the heating cigarette smoking device, and the actual temperature inside the accommodating cavity 11 is indirectly obtained by detecting the resistance value of the thermistor.

[0161] S2033: Compare the actual temperature with the target temperature corresponding to the current operating time in the temperature target curve.

[0162] If the actual temperature is greater than the target temperature corresponding to the current operating time in the temperature target curve, step S2034 is executed; if the actual temperature is less than the target temperature corresponding to the current operating time in the temperature target curve, step S2035 is executed.

[0163] S2034: Increase the power of the airflow generator 3.

[0164] If the actual temperature is greater than the target temperature corresponding to the current operating time in the temperature target curve, it indicates that the actual temperature inside the accommodating chamber 11 is too high. Therefore, the power of the airflow generator 3 is increased to blow more fresh air into the accommodating chamber 11 to reduce the temperature inside the accommodating chamber 11.

[0165] Optionally, after completing step S2034, return to step S2032 to obtain the actual temperature inside the accommodating cavity 11 and the current operating time of the cigarette heating device again, and determine how to adjust the power of the airflow generator 3 at this time.

[0166] S2035: Reduce the power of the airflow generator 3.

[0167] If the actual temperature is lower than the target temperature corresponding to the current operating time in the temperature target curve, it indicates that the actual temperature inside the accommodating chamber 11 is too low. Therefore, reducing the power of the airflow generator 3 can reduce the amount of air blown into the accommodating chamber 11 to increase the temperature inside the accommodating chamber 11.

[0168] Optionally, after completing step S2035, the process returns to step S2032 to obtain the actual temperature inside the accommodating cavity 11 and the current operating time of the cigarette heating device again, and determine how to adjust the power of the airflow generator 3 at this time.

[0169] Embodiment 5

[0170] This embodiment provides another method for controlling air intake of a heated cigarette smoking article. The difference between this method for controlling air intake of a heated cigarette smoking article and the start-up control method in the second embodiment is that the specific steps of step S200 in the start-up control method of the method for controlling air intake of a heated cigarette smoking article are different.

[0171] Reference Fig.14 In this embodiment, step S200 specifically includes the following steps.

[0172] S2041: Turn on airflow generator 3.

[0173] S2042: Determine that the airflow generator 3 has been operating for a first duration.

[0174] The first duration can be considered as the time before the heating cigarette smoking device is started. During the first duration, the cigarette 100 is heated unevenly.

[0175] Specifically, the first duration can be pre-set and stored in the controller 5. When the airflow generator 3 is turned on, the timer is turned on. When the first duration is reached, it can be confirmed that the airflow generator 3 has worked for the first duration.

[0176] In addition, since there may be certain differences in the start-up time of the airflow generator 3 and the heating element 2 in some heated cigarette smoking devices, the first duration can also be obtained based on the working time of the heating element 2. Specifically, when the heating element 2 has worked for the first preset time, it can be considered that the airflow generator 3 has worked for the first duration.

[0177] S2043: Turn off airflow generator 3.

[0178] Turning off the airflow generator 3 can also reduce the gas flow inside the accommodating chamber 11 so as to adapt it to the characteristics of heating the cigarette smoking article to start the mid-stage cigarette 100.

[0179] S2044: Determine that the airflow generator 3 has been operating for a second duration, and the second duration is greater than the first duration.

[0180] The second duration can be considered as the early and middle time of starting the heated cigarette smoking device. During the first duration to the second duration, the heating condition of the cigarette 100 is better, and after the second duration, the effective substance of the cigarette 100 is consumed and the smoke output is affected.

[0181] Specifically, the second duration can be pre-set and stored in the controller 5. When the airflow generator 3 is turned on, the timer is turned on. When the second duration is reached, it can be confirmed that the airflow generator 3 has worked for the second duration.

[0182] In addition, since there may be certain differences in the start-up time of the airflow generator 3 and the heating element 2 in some heated cigarette smoking devices, the second duration can also be obtained based on the working time of the heating element 2. Specifically, when the heating element 2 has worked for the second preset time, it can be considered that the airflow generator 3 has worked for the second duration.

[0183] S2045: Restart the airflow generator 3.

[0184] Turning on the airflow generator 3 can also increase the gas flow rate inside the accommodating chamber 11 so as to adapt it to the characteristics of the late-stage cigarette 100 of the heating cigarette smoking device. In this embodiment, the flow rate at the output end of the airflow generator 3 changes with time as shown in FIG. Fig.15 shown.

[0185] Embodiment 6

[0186] This embodiment provides another method for controlling air intake of a heated cigarette smoking article. The difference between this method for controlling air intake of a heated cigarette smoking article and the start-up control method in the second embodiment is that the specific steps of step S200 in the start-up control method of the method for controlling air intake of a heated cigarette smoking article are different.

[0187] Since the change of gas flow rate will inevitably cause the change of temperature inside the heated cigarette smoking device, in this embodiment, the temperature inside the accommodating chamber 11 is used as the basis for controlling the opening or closing of the airflow generator 3. Specifically, the controller 5 of the heated cigarette smoking device has a built-in temperature target curve of the temperature inside the accommodating chamber 11 changing with the operation time of the heated cigarette smoking device.

[0188] Reference Fig.16 In this embodiment, step S200 specifically includes the following steps.

[0189] S2051: Turn on airflow generator 3.

[0190] S2052: Acquire the actual temperature inside the accommodating chamber 11 and the current operation time of the heating cigarette smoking device.

[0191] Among them, the actual temperature inside the accommodating cavity 11 can be obtained through a temperature sensor set in the accommodating cavity 11; or, a thermistor is set at a position close to the accommodating cavity 11 of the heating cigarette smoking device, and the actual temperature inside the accommodating cavity 11 is indirectly obtained by detecting the resistance value of the thermistor.

[0192] S2053: Compare the actual temperature with the target temperature corresponding to the current operating time in the temperature target curve.

[0193] If the actual temperature is greater than the target temperature corresponding to the current operating time in the temperature target curve, step S2054 is executed; if the actual temperature is less than the target temperature corresponding to the current operating time in the temperature target curve, step S2055 is executed.

[0194] S2054: Confirm that the airflow generator 3 is turned on.

[0195] If the actual temperature is greater than the target temperature corresponding to the current operating time in the temperature target curve, it indicates that the actual temperature inside the accommodating chamber 11 is too high. Therefore, the airflow generator 3 is turned on to continuously blow fresh air into the accommodating chamber 11 to reduce the temperature inside the accommodating chamber 11.

[0196] Optionally, after completing step S2054, return to step S2052 to obtain the actual temperature inside the accommodating chamber 11 and the current operating time of the heated cigarette smoking device again, and determine how to adjust the switch state of the airflow generator 3 at this time.

[0197] S2055: Confirm that the airflow generator 3 is turned off.

[0198] If the actual temperature is lower than the target temperature corresponding to the current operating time in the temperature target curve, it indicates that the actual temperature inside the accommodating chamber 11 is too low. Therefore, the airflow generator 3 is turned off and the blowing of air into the accommodating chamber 11 is stopped to increase the temperature inside the accommodating chamber 11.

[0199] Optionally, after completing the execution of step S2055, return to step S2052 to obtain the actual temperature inside the accommodating chamber 11 and the current operating time of the heated cigarette smoking device again, and determine how to adjust the switch state of the airflow generator 3 at this time.

[0200] Embodiment 7

[0201] This embodiment provides another method for controlling air intake of a heated cigarette smoking device. The method for controlling air intake of a heated cigarette smoking device also includes a closing control method. Fig.17 , the closing control method includes the following steps.

[0202] S500: Confirm that the heated cigarette smoking device is turned off, and turn off the heating element 2.

[0203] Wherein, when the heated cigarette smoking device is in the on state, the user presses the power button 6 to confirm that the heated cigarette smoking device is turned off.

[0204] S600: Confirm that the airflow generator 3 is turned on with a preset power, and turn off the airflow generator 3 after the airflow generator 3 runs for a preset time.

[0205] Through step S600, after the heating element 2 is turned off, the airflow generator 3 can still be controlled to blow gas into the interior of the accommodating chamber 11 to discharge the residual aerosol in the accommodating chamber 11 and reduce the gas temperature in the accommodating chamber 11, thereby preventing the user from having a smoking experience inconsistent with the previous one when continuously inhaling multiple cigarettes 100.

[0206] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A heated cigarette smoking device, characterized in that: include: A housing (1) comprising a receiving chamber (11) for receiving a cigarette (100), an air flow channel (12) communicating with the receiving chamber (11), and an air inlet (13) communicating with the air flow channel (12), wherein the air inlet (13) is used for external air to enter; a heating element (2) capable of generating heat and having a first end disposed in the accommodating cavity (11) and a second end disposed in the airflow channel (12), wherein the first end is used for heating the cigarette (100) disposed in the accommodating cavity (11); An air flow generator (3) is arranged in the air flow channel (12) and is used to blow gas toward the accommodating chamber (11); A heat-conducting structure (7) is arranged in the air flow channel (12) and is in at least partial contact with the heating element (2); the heat-conducting structure (7) is capable of performing heat exchange with the gas in the air flow channel (12).

2. The heated cigarette smoking device according to claim 1, characterized in that: The heat-conducting structure is a foam material filled in the air flow channel (12).

3. The heated cigarette smoking device according to claim 1, characterized in that: The heat-conducting structure (7) is provided with a vent hole (71).

4. The heated cigarette smoking device according to claim 3, characterized in that: The heat-conducting structure (7) is in the shape of a hollow tube, the airflow channel (12) is connected to the inner cavity of the heat-conducting structure (7), and the heating element (2) is arranged inside the heat-conducting structure (7).

5. The heated cigarette smoking device according to claim 3, characterized in that: The heat-conducting structure (7) is in the shape of a hollow tube, the air flow channel (12) is connected to the inner cavity of the heat-conducting structure (7), the heating element (2) is arranged outside the heat-conducting structure (7), an insulating layer (8) is arranged between the heating element (2) and the heat-conducting structure (7), and the air vents (71) pass through the heat-conducting structure (7), the insulating layer (8) and the heating element (2) in sequence.

6. A method for controlling air intake of a heated cigarette smoking device, characterized in that: By implementing the heated cigarette smoking article according to any one of claims 1 to 5, the heated cigarette smoking article air intake control method includes a start-up control method, and the start-up control method includes: S100: confirming that the heated cigarette smoking device is turned on, and supplying power to the heating element (2); S200: Control the switch or power of the airflow generator (3) so that the gas flow inside the accommodating chamber (11) is, as the operation time of the heated cigarette smoking device increases, an early gas flow, a mid-term gas flow and a late gas flow, respectively, and the early gas flow is greater than the mid-term gas flow, and the late gas flow is greater than the mid-term gas flow.

7. The method for controlling air intake of a heated cigarette smoking device according to claim 6, wherein step S200 comprises: S2011: Turn on the airflow generator (3); S2012: Determining that the airflow generator (3) has been operating for a first duration; S2013: reducing the power of the airflow generator (3); S2014: Determining that the airflow generator (3) has been operating for a second duration, wherein the second duration is greater than the first duration; S2015: Increasing the power of the airflow generator (3).

8. The method for controlling air intake of a heated cigarette smoking device according to claim 6, characterized in that: The controller of the heated cigarette smoking device has a built-in target curve of the gas flow rate inside the accommodating cavity (11) changing with the operation time of the heated cigarette smoking device, and the early gas flow rate of the gas decreases with the increase of time, and the late gas flow rate of the gas increases with the increase of time; Step S200 includes: S2021: Turn on the airflow generator (3); S2022: Acquiring the actual gas flow rate inside the accommodating chamber (11) and the current operating time of the heated cigarette smoking device; S2023: Compare the actual gas flow rate with the target gas flow rate corresponding to the current running time in the target curve; If the actual gas flow rate is greater than the target gas flow rate corresponding to the current running time in the target curve, step S2024 is executed; if the actual gas flow rate is less than the target gas flow rate corresponding to the current running time in the target curve, step S2025 is executed; S2024: reducing the power of the airflow generator (3); S2025: Increasing the power of the airflow generator (3).

9. The method for controlling air intake of a heated cigarette smoking device according to claim 6, characterized in that: The controller of the heated cigarette smoking device has a built-in temperature target curve showing how the temperature inside the accommodating cavity (11) changes with the operating time of the heated cigarette smoking device; Step S200 includes: S2031: Turn on the airflow generator (3); S2032: Acquiring the actual temperature inside the accommodating cavity (11) and the current operating time of the heated cigarette smoking device; S2033: Compare the actual temperature with the target temperature corresponding to the current operating time in the temperature target curve; If the actual temperature is greater than the target temperature corresponding to the current operating time in the temperature target curve, step S2034 is executed; if the actual temperature is less than the target temperature corresponding to the current operating time in the temperature target curve, step S2035 is executed; S2034: increasing the power of the airflow generator (3); S2035: reducing the power of the airflow generator (3).

10. The method for controlling air intake of a heated cigarette smoking device according to any one of claims 7 to 9, characterized in that: The startup control method further includes the following steps which are performed after step S100 and synchronously with step S200: S300: obtaining the air pressure inside the accommodating chamber (11), and comparing the air pressure with a set pressure; If the air pressure is less than the set pressure, executing step S400; S400: increasing the power of the airflow generator (3), and reducing the power of the airflow generator (3) after a set time has passed.

11. The method for controlling air intake of a heated cigarette smoking device according to claim 6, characterized in that: Step S200 includes: S2041: Turn on the airflow generator (3); S2042: Determine that the airflow generator (3) has been operating for a first duration; S2043: Turning off the airflow generator (3); S2044: Determine that the airflow generator (3) has been operating for a second duration, and the second duration is greater than the first duration; S2045: Reopen the airflow generator (3).

12. The method for controlling air intake of a heated cigarette smoking device according to claim 6, characterized in that: The controller of the heated cigarette smoking device has a built-in temperature target curve showing how the temperature inside the accommodating cavity (11) changes with the operating time of the heated cigarette smoking device; Step S200 includes: S2051: Turn on the airflow generator (3); S2052: Acquiring the actual temperature inside the accommodating cavity (11) and the current operating time of the heated cigarette smoking device; S2053: Compare the actual temperature with the target temperature corresponding to the current operating time in the temperature target curve; If the actual temperature is greater than the target temperature corresponding to the current operating time in the temperature target curve, step S2054 is executed; if the actual temperature is less than the target temperature corresponding to the current operating time in the temperature target curve, step S2055 is executed; S2054: confirming that the airflow generator (3) is turned on; S2055: Confirm that the airflow generator (3) is turned off.

13. The method for controlling air intake of a heated cigarette smoking device according to any one of claims 6-9, 11-12, characterized in that: The heated cigarette smoking article air intake control method further includes a closing control method, and the closing control method includes: S500: confirming that the heated cigarette smoking device is turned off, and turning off the heating element (2); S600: Confirm that the airflow generator (3) is turned on at a preset power, and turn off the airflow generator (3) after the airflow generator (3) runs for a preset time.

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