A heated cigarette smoking device with variable airway pressure and a method of using the same

Abstract

The present invention belongs to the technical field of heated cigarette smoking utensils, and particularly relates to a heated cigarette smoking utensils with variable airway pressure and a method of using the same. The smoking utensils include: a mouthpiece (1), a heating chamber (3), a first one-way control valve (5), a piston (6), and a main airflow channel (9); the mouthpiece (1) is arranged above the heating chamber (3) and is in airflow communication with the main airflow channel (9); the main airflow channel (9) has a section (9‑1) with a variable channel cross section, and a movable piston (6) is arranged on one side of the variable channel cross section section (9‑1). The present invention is the first to achieve sealing of the tobacco section in the heating chamber and extraction of smoke by changing the cross section of a specific position of the airway of the smoking utensils, causing a Venturi effect, controlling the air pressure change, and cooperating with a one-way control valve.

Description

Technical Field

[0001] The present invention belongs to the technical field of heated cigarette smoking articles, and in particular relates to a heated cigarette smoking article with variable airway pressure and a use method thereof. Background Art

[0002] Traditional cigarettes release nicotine and flavor components in tobacco by burning to meet the needs of consumers. Heated cigarettes heat tobacco products to atomization temperature through an external heat source to achieve the effect of producing smoke. And the heating temperature is lower than the combustion temperature of tobacco, which can significantly reduce the large amount of harmful substances produced by cigarette combustion and reduce the harm of secondhand smoke to non-smoking people. Since the heating temperature of heated cigarettes is lower than the combustion temperature, compared with traditional cigarettes, the tobacco aroma components of heated cigarettes are difficult to be completely released, and the smoke volume is insufficient, so this type of cigarette is difficult to be accepted by traditional smokers. If the bottom of the cigarette is sealed, the oxygen content will decrease with the heating process (this is due to the replacement effect of the newly formed fresh smoke on the internal gas of the cigarette). At this time, even if the heating temperature is increased, combustion will not occur, and the release of tobacco aroma components can be increased. However, sealing the bottom of the cigarette during cigarette preparation will cause a large change in the existing cigarette production process, and the equipment cost is too high.

[0003] At the same time, the existing sealing method only seals the bottom of the cigarette. When the cigarette is heated for a long time, part of the smoke will diffuse into the air as the heating time goes by, affecting the smoking taste.

[0004] The present invention is proposed to solve the above-mentioned problems. Summary of the invention

[0005] The first aspect of the present invention provides a heated cigarette smoking device with variable airway pressure, the smoking device comprising: a mouthpiece 1, a heating chamber 3, a first one-way control valve 5, a piston 6, and a main airflow channel 9;

[0006] The suction nozzle 1 is arranged above the heating chamber 3 and is in airflow communication with the main airflow channel 9;

[0007] The main airflow channel 9 has a variable channel cross-section section 9-1, and a movable piston 6 is provided on one side of the variable channel cross-section section 9-1. When the piston 6 moves, it can change the cross-section of the variable channel cross-section section 9-1, so that the cross-section of the variable channel cross-section section 9-1 is larger or smaller than the cross-section of other parts of the main airflow channel 9.

[0008] The heating chamber 3 is arranged on the other side of the variable channel cross-section section 9-1 of the main airflow channel 9, and has a smoke outlet 3-1. A first one-way control valve 5 is arranged between the smoke outlet 3-1 and the variable channel cross-section section 9-1. The first one-way control valve 5 has a one-way opening and closing function, and can only be opened in the direction away from the smoke outlet 3-1.

[0009] The piston 6 and the main air flow channel 9 are always kept relatively sealed.

[0010] Preferably, the piston 6 reciprocates in the horizontal direction in its motion channel, and the motion channel of the piston 6 and the variable channel section 9-1 at least partially overlap. This allows the piston 6 to change the section of the variable channel section 9-1 when it moves, so that the section of the variable channel section 9-1 is larger or smaller than the section of other parts of the main airflow channel 9.

[0011] When the piston 6 is at an initial position away from the main air flow channel 9 , the cross section of the variable channel cross section section 9 - 1 is larger than the cross sections of other parts of the main air flow channel 9 .

[0012] When the piston 6 moves closer to the main air flow channel 9, the cross-section of the variable channel cross-section section 9-1 becomes smaller.

[0013] When a portion of the piston 6 moves into the variable channel section 9 - 1 , the cross section of the variable channel section 9 - 1 is smaller than the cross sections of other portions of the main air flow channel 9 .

[0014] Preferably, the smoking article further comprises a control module 11 which controls the movement of the piston 6 .

[0015] Preferably, the center line of the movement channel of the piston 6 coincides with the center line of the smoke outlet 3 - 1 , that is, the piston 6 and the heating chamber are distributed at the same height on both sides of the main air flow channel 9 .

[0016] Preferably, the smoking device further comprises a second one-way control valve 10 , which is located at the upstream end of the main airflow channel 9 . The second one-way control valve 10 has a one-way opening and closing function, and can only be opened in a direction close to the suction nozzle 1 .

[0017] Preferably, the smoking device further comprises a sealing sleeve 4, which is located outside the heating chamber 3 and seals at least the bottom of the heating chamber 3. The heating chamber 3 is sealed on all sides and is only provided with the smoke outlet 3-1.

[0018] Preferably, the smoking device further comprises an air pressure sensor 8, which is arranged in the main air flow channel 9, can sense the air pressure change in the main air flow channel 9, and output a signal to the control module 11, and the control module 11 controls the movement of the piston 6 according to the signal.

[0019] Preferably, the smoking device further comprises a shell 2, and the sealing sleeve 4 is detachably connected to the shell 2, and the connection method may be magnetic attraction, snap-on connection, or threaded connection.

[0020] When it is necessary to add tobacco segments into the heating chamber, the sealing sleeve 4 can be removed and then added.

[0021] Preferably, the control module 11 controls the movement of the piston 6 by controlling the rotation of the motor 7 .

[0022] Preferably, the control module 11 also controls the heating process of the heating chamber 3 .

[0023] The present invention defines the flow direction of airflow in the main airflow channel 9 as from upstream to downstream.

[0024] The second aspect of the present invention provides a method for using the heated cigarette smoking device of the first aspect, comprising the following steps:

[0025] (1) placing a tobacco segment in the heating chamber, starting the smoking device, and after preheating is completed, the user inhales through the suction nozzle 1;

[0026] (2) The user generates negative pressure in the main air flow channel 9 by suction, and the second one-way control valve 10 opens. At the same time, the air pressure sensor 8 senses the air pressure change and generates a signal;

[0027] (3) The air pressure sensor 8 outputs a signal to the control module 11, and the control module 11 controls the motor 7 to rotate;

[0028] (4) The motor 7 controls the piston 6 to move toward the direction of the variable channel section 9-1. At this time, the cross section of the variable channel section 9-1 becomes smaller. According to the Venturi effect, negative pressure is formed here, so that the first one-way control valve 5 opens, and the smoke in the heating chamber flows into the main air flow channel 9 and mixes with the air, and finally flows out of the smoking device through the suction nozzle 1;

[0029] (5) When the single-puff puff is completed, the air pressure sensor 8 senses the air pressure change in the main air flow channel 9 again, generates a signal, and transmits the signal to the control module 11, and the control module 11 controls the motor 7 to rotate;

[0030] (6) The motor 7 controls the piston 6 to move in a direction away from the variable channel section 9-1. At this time, the cross-section of the variable channel section 9-1 becomes larger. According to the Venturi effect, positive pressure is formed here, so that the first one-way control valve 5 is closed, and the heating chamber is sealed again.

[0031] The above technical solutions can be freely combined under the premise of no contradiction.

[0032] The present invention has the following beneficial effects:

[0033] 1. The present invention designs a heating chamber with a sealed bottom. After tobacco segments are added therein, oxygen-deficient heating of the tobacco segments can be achieved. Even if the heating temperature is increased, combustion will not occur, and the release of tobacco aroma components can be increased.

[0034] 2. The present invention is the first to change the cross section of a specific position of the airway of the smoking device, change the gas flow rate, generate the Venturi effect, control the air pressure change, and cooperate with a one-way control valve to achieve the sealing of the tobacco segment in the heating chamber and the extraction of smoke. This solves the problem of smoke overflow when there is no fresh air circulating through the tobacco segment.

[0035] 3. The present invention is the first to use the movement of the piston to change the cross section of the airflow channel in a smoking device, and the movement of the piston can be controlled by a control module and coordinated with the user's puffing behavior. This allows the tobacco segment to be in a sealed state at all times except when the sealing state is released during puffing, which not only ensures the taste of the smoke, but also improves the utilization rate of heat energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the heated cigarette smoking device with variable airway pressure in Example 1 in the unsmoked state.

[0037] Figure 2 This is a schematic diagram of the smoking state of the heated cigarette smoking device with variable airway pressure in Example 1.

[0038] List of reference numerals:

[0039] 1. Suction nozzle, 2. Shell, 3. Heating chamber, 4. Sealing sleeve, 5. First one-way control valve, 6. Piston, 7. Motor, 8. Air pressure sensor, 9. Main air flow channel, 10. Second one-way control valve, 11. Control module, 12. Power module, 13. Charging module, 14. Tobacco section. DETAILED DESCRIPTION

[0040] The content of the present invention is further explained below through specific implementation examples.

[0041] Example 1

[0042] like Figure 1-2A heated cigarette smoking device with variable airway pressure, the smoking device comprising a mouthpiece 1, a shell 2, a heating chamber 3, a sealing sleeve 4, a first one-way control valve 55, a piston 6, a motor 7, an air pressure sensor 8, a main airflow channel 9, a second one-way control valve 510, a control module 11, a power module 12, a charging module 13, and a tobacco segment 14.

[0043] The sealing sleeve 4 is located outside the heating chamber 3 and is used to seal the tobacco segment 14. The sealing sleeve 4 is snap-fitted to the housing 2. The heating chamber 3 is sealed on all sides and is only provided with a smoke outlet 3-1.

[0044] The main air flow channel 9 has a variable channel cross-section section 9 - 1 .

[0045] The suction nozzle 1 is located above the smoking device and is closely connected to the main air flow channel 9;

[0046] The heating chamber 3 is located on one side of the variable section 9-1 of the main airflow channel 9 and is in the shape of a hollow cylindrical structure, and is used to place the tobacco segment 14 therein for heating and generating smoke;

[0047] The output end of the heating chamber 3 is connected to the input end of the control module 11 . That is, the pin of the heating chamber 3 is connected to the control module, and the heating process of the heating chamber 3 is controlled by the control module 11 .

[0048] The airflow outflow direction of the heating chamber 3 is vertically connected to the airflow outflow direction of the variable channel section 9-1, and a first one-way control valve 5 is provided at the connection between the airflow outflow direction of the heating chamber 3 and the airflow outflow direction of the variable channel section 9-1.

[0049] The first one-way control valve 5 has a one-way opening and closing function, and can only be opened in a direction away from the sealing sleeve 4;

[0050] The piston 6 is located on the other side of the variable channel section 9-1 and can reciprocate in the horizontal direction in its movement channel. The movement channel of the piston 6 and the variable channel section 9-1 at least partially overlap.

[0051] Therefore, through the reciprocating motion of the piston 6, the variable channel section 9-1 is transformed into a structure with an adjustable cross-section, so that the cross-section of the variable channel section 9-1 is larger or smaller than the cross-section of other parts of the main airflow channel 9, producing different Venturi effects.

[0052] The center line of the piston 6 movement channel coincides with the center line of the smoke outlet 3-1 of the heating chamber 3.

[0053] The motor 7 is located below the piston 6 and is connected to the control module 11 .

[0054] The air pressure sensor 8 is connected to the control module 11;

[0055] The air pressure sensor 8 is arranged in the main air flow channel 9, and can sense the air pressure changes in the main air flow channel 9 and transmit an air pressure change signal to the control module 11. The control module 11 controls the movement distance or frequency of the piston 6 by controlling the rotation of the motor 7 according to the air pressure change signal.

[0056] The second one-way control valve 10 is located at the upstream end of the main air flow channel 9 . The second one-way control valve 10 has a one-way opening and closing function and can only be opened in a direction close to the suction nozzle 1 .

[0057] The tobacco segment 14 can be a tobacco portion cut from a cigarette stick, or can be designed as an independent tobacco segment.

[0058] Example 2

[0059] The method of using the smoking device in Example 1 is as follows:

[0060] The following steps are involved:

[0061] (1) placing a tobacco segment in the heating chamber, starting the smoking device, and after preheating is completed, the user inhales through the suction nozzle 1;

[0062] (2) The user generates negative pressure in the main air flow channel 9 by suction, and the second one-way control valve 10 opens. At the same time, the air pressure sensor 8 senses the air pressure change and generates a signal;

[0063] (3) The air pressure sensor 8 outputs a signal to the control module 11, and the control module 11 controls the motor 7 to rotate;

[0064] (4) The motor 7 controls the piston 6 to move toward the direction of the variable channel section 9-1. At this time, the cross-section of the variable channel section 9-1 becomes smaller. When it is smaller than the cross-section of other parts of the main airflow channel 9, a negative pressure is formed here according to the Venturi effect, so that the first one-way control valve 5 opens, and the smoke in the heating chamber flows into the main airflow channel 9 and mixes with the air, and finally flows out of the smoking device through the suction nozzle 1;

[0065] (5) When the single-puff puff is completed, the air pressure sensor 8 senses the air pressure change in the main air flow channel 9 again, generates a signal, and transmits the signal to the control module 11, and the control module 11 controls the motor 7 to rotate;

[0066] (6) The motor 7 controls the piston 6 to move in a direction away from the variable channel section 9-1. At this time, the cross-section of the variable channel section 9-1 becomes larger. When it is larger than the cross-section of other parts of the main airflow channel 9, a positive pressure is formed here according to the Venturi effect, so that the first one-way control valve 5 is closed and the heating chamber is sealed again. Since the air pressure in the main airflow channel 9 is no longer greater than the atmospheric pressure, the second one-way control valve 10 is also closed.

[0067] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A heated cigarette smoking device with variable airway pressure, characterized in that: The smoking device comprises: a suction nozzle (1), a heating chamber (3), a first one-way control valve (5), a piston (6), and a main air flow channel (9); The suction nozzle (1) is arranged above the heating chamber (3) and is in airflow communication with the main airflow channel (9); The main airflow channel (9) has a variable channel section (9-1), and a movable piston (6) is provided on one side of the variable channel section (9-1). When the piston (6) moves, it can change the section of the variable channel section (9-1), so that the section of the variable channel section (9-1) is larger or smaller than the section of other parts of the main airflow channel (9); The heating chamber (3) is arranged on the other side of the variable channel section (9-1) of the main air flow channel (9), and has a smoke outlet (3-1). A first one-way control valve (5) is arranged between the smoke outlet (3-1) and the variable channel section (9-1). The first one-way control valve (5) has a one-way opening and closing function and can only be opened in a direction away from the smoke outlet (3-1). The piston (6) reciprocates in a horizontal direction in its motion channel, and the motion channel of the piston (6) and the variable channel cross-section section (9-1) at least partially overlap; The smoking device further comprises a control module (11) which controls the movement of the piston (6); The center line of the movement channel of the piston (6) coincides with the center line of the smoke outlet (3-1); The smoking device further comprises a second one-way control valve (10), which is located at the upstream end of the main airflow channel (9), and the second one-way control valve (10) has a one-way opening and closing function, and can only be opened in a direction close to the suction nozzle (1); The smoking device further comprises a sealing sleeve (4), which is located outside the heating chamber (3) and seals at least the bottom of the heating chamber (3); the heating chamber (3) is sealed on all sides and is only provided with the smoke outlet (3-1); The smoking device also includes an air pressure sensor (8), which is arranged in the main air flow channel (9) and can sense the air pressure change in the main air flow channel (9) and transmit an air pressure change signal to the control module (11). The control module (11) controls the movement distance or frequency of the piston (6) according to the air pressure change signal.

2. The heated cigarette smoking device according to claim 1, characterized in that: The smoking device further comprises a shell (2), and the sealing sleeve (4) is detachably connected to the shell (2), and the connection method may be magnetic attraction, snap-on connection, or threaded connection.

3. The heated cigarette smoking device according to claim 1, characterized in that: The control module (11) controls the movement of the piston (6) by controlling the rotation of the motor (7).

4. The method for using the heated cigarette smoking device according to any one of claims 1 to 3, characterized in that: The following steps are involved: (1) placing a tobacco segment in the heating chamber, starting the smoking device, and after preheating is completed, the user inhales through the suction nozzle (1); (2) The user generates negative pressure in the main air flow channel (9) by suction, and the second one-way control valve (10) opens. At the same time, the air pressure sensor (8) senses the air pressure change and generates a signal; (3) The air pressure sensor (8) outputs a signal to the control module (11), and the control module (11) controls the rotation of the motor (7); (4) The motor (7) controls the piston (6) to move in a direction close to the variable channel section (9-1). At this time, the cross section of the variable channel section (9-1) becomes smaller. According to the Venturi effect, negative pressure is formed here, so that the first one-way control valve (5) opens, and the smoke in the heating chamber flows into the main air flow channel (9) and mixes with the air, and finally flows out of the smoking device through the suction nozzle (1); (5) When the single-puff puff is completed, the air pressure sensor (8) senses the air pressure change in the main air flow channel (9) again, generates a signal, and transmits the signal to the control module (11), and the control module (11) controls the motor (7) to rotate; (6) The motor (7) controls the piston (6) to move in a direction away from the variable channel section (9-1). At this time, the cross-section of the variable channel section (9-1) becomes larger. Due to the Venturi effect, a positive pressure is formed here, causing the first one-way control valve (5) to close, thereby sealing the heating chamber again.

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