An aerosol generation device with variable flue gas concentration

Abstract

This application discloses an aerosol generating device with variable smoke concentration, comprising an apparatus unit for heating non-combustible cigarettes and a suction unit mounted on the apparatus unit. The apparatus unit contains a tobacco unit connected to the suction unit. The apparatus unit also includes a buffer chamber positioned between the tobacco unit and the suction unit. The buffer chamber further includes an adjustment unit for regulating smoke concentration and a pressure sensor for monitoring the pressure within the buffer chamber. The adjustment unit and the pressure sensor are electrically connected. This invention, by incorporating the adjustment unit and pressure sensor within the buffer chamber, coordinates and controls the smoke concentration within the buffer chamber, ensuring that the smoke concentration remains at a set value and guaranteeing high uniformity and consistency in the amount of smoke released during inhalation.

Description

Technical Field

[0001] This application relates to the field of heated non-combustible cigarette technology, and in particular to an aerosol generating device with variable smoke concentration. Background Technology

[0002] During the smoking process of heated tobacco products, the state of the tobacco base material changes continuously with the increase of smoking time. The state of the generated aerosol is inconsistent before and after the smoking process. The substances in the tobacco base material cannot be released evenly, and the amount, concentration and temperature of the smoke generated by the aerosol will change, resulting in a poor consumer experience.

[0003] Existing technologies include methods for balancing smoke concentration by setting up a buffer chamber. For example, CN113100481A discloses a smoking device with a smoke buffer chamber and a one-way valve. The buffer chamber balances the amount of smoke volatilized from heated non-combustible cigarettes and controls the amount of smoke in a single inhale. The buffer chamber also includes a temperature sensor, a temperature control module, and an electric heating device (which can achieve secondary heating). However, the volume of the buffer chamber in this patent remains unchanged. As the smoke in the buffer chamber is consumed by inhalation, the smoke concentration in the buffer chamber continuously decreases, resulting in poor uniformity and consistency of the amount of smoke released during inhalation.

[0004] Improving the uniformity and consistency of smoke gas release remains a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides an aerosol generating device with variable flue gas concentration. It is equipped with an adjustment unit and a pressure sensor in a buffer chamber. The adjustment unit and the pressure sensor can coordinate and control the concentration of flue gas in the buffer chamber, so that the concentration of flue gas in the buffer chamber is always at the set value, which can ensure that the uniformity and consistency of the amount of smoked gas released are high.

[0006] The technical solution provided by this invention is as follows:

[0007] A variable-concentration aerosol generating device includes an apparatus unit for heating non-combustible cigarettes and a suction unit mounted on the apparatus unit. The apparatus unit contains a tobacco unit connected to the suction unit. The apparatus unit also contains a buffer chamber located between the tobacco unit and the suction unit. The buffer chamber further contains an adjustment unit for adjusting the concentration of the smoke and a pressure sensor for monitoring the pressure inside the buffer chamber. The adjustment unit and the pressure sensor are electrically connected.

[0008] Preferably, the adjustment unit includes a piston, a drive mechanism for driving the piston to reciprocate within the buffer cavity, a slide rail for sliding the piston, and limiting mechanisms located at both ends of the slide rail. The drive mechanism is effectively electrically connected to the piston and is disposed on one side of the limiting mechanism.

[0009] Preferably, the limiting mechanism includes a first limiting member located near the tobacco unit and a second limiting member located near the suction unit, wherein the second limiting member has a hollow structure.

[0010] Preferably, the drive mechanism includes a micro motor.

[0011] Preferably, the buffer cavity is further provided with a heating unit and a temperature sensor, and the heating unit and the temperature sensor are effectively electrically connected.

[0012] Preferably, the suction unit includes a suction pump located at the smoke outlet of the tobacco unit, a mouthpiece located at the end of the device unit, a suction valve located at the smoke inlet of the mouthpiece, and a suction valve control switch located on the outer surface of the device unit.

[0013] Preferably, the appliance unit includes a housing, a heating component located inside the housing for heating the tobacco unit, and a start switch for activating the heating component.

[0014] Preferably, the tobacco unit includes tobacco and a container for holding or wrapping the tobacco.

[0015] The variable smoke concentration aerosol generating device of the present invention includes two processes: buffering smoke and inhaling the pre-buried smoke. The specific process of buffering smoke is as follows: Pressing the start switch in the device unit activates the heating component. After the tobacco unit is heated to the set temperature, the suction pump in the suction unit starts. The aerosol generated in the tobacco unit enters the buffer chamber through the suction pump. The piston can be moved back and forth by setting the pressure inside the buffer chamber, changing the volume of the buffer chamber and indirectly controlling the smoke concentration inside. After the suction pump draws smoke from the tobacco unit until the smoke pressure inside the buffer chamber reaches the set value, suction continues. The drive mechanism drives the piston to move from the second limit member to the first limit member on the slide rail, increasing the volume inside the buffer chamber to maintain a constant pressure. After the tobacco unit has completed the preset suction program, the piston is usually located between the second and first limit members. The device can buffer the smoke volume of multiple tobacco units according to user needs. When the piston moves to the position of the first limit piece, the device's protection function is triggered, the suction pump stops suction, and the buffer volume in the buffer chamber reaches its maximum under the condition of preset smoke concentration. The specific process of sucking the pre-buffered smoke is as follows: A suction valve is set at the smoke inlet of the mouthpiece. The suction valve is a one-way valve, which allows smoke to flow only from inside the chamber to the filter. When the consumer sucks, he presses the suction valve control switch. Under the combined action of the suction action of the human mouth and the piston pushing to maintain a constant pressure in the buffer chamber, the smoke in the buffer chamber enters the human mouth.

[0016] The present invention has the following advantages over the prior art:

[0017] The variable-concentration aerosol generating device of the present invention is equipped with an adjustment unit and a pressure sensor in the buffer chamber. The pressure sensor monitors the pressure in the buffer chamber, and the adjustment unit adjusts the pressure in the buffer chamber to keep it constant. Thus, the adjustment unit and the pressure sensor can coordinate and control the concentration of the flue gas in the buffer chamber, so that the concentration of the flue gas in the buffer chamber is always at the set value, which can ensure that the uniformity and consistency of the amount of smoked gas released are high. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the aerosol generation device with variable flue gas concentration in an embodiment of the present invention;

[0020] Figure 2This is a schematic diagram of the structure in which the piston moves from the second limiting member to the first limiting member in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure in which the piston moves from the first limiting member to the second limiting member in an embodiment of the present invention.

[0022] Figure label:

[0023] 1. Appliance unit; 11. Housing; 12. Start switch; 2. Suction unit; 21. Suction pump; 22. Nozzle; 23. Suction valve; 24. Suction valve control switch; 3. Tobacco unit; 4. Buffer chamber; 41. Heating unit; 42. Temperature sensor; 5. Adjustment unit; 51. Piston; 52. Drive mechanism; 53. Slide rail; 54. Limiting mechanism; 541. First limiting element; 542. Second limiting element; 6. Pressure sensor. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] like Figures 1 to 3 As shown, this embodiment of the invention provides an aerosol generating device with variable smoke concentration, including an apparatus unit 1 for heating non-combustible cigarettes and a suction unit 2 installed on the apparatus unit 1. The apparatus unit 1 is provided with a tobacco unit 3, which is connected to the suction unit 2. The apparatus unit 3 is also provided with a buffer chamber 4, which is located between the tobacco unit 3 and the suction unit 2. The buffer chamber 4 is also provided with an adjustment unit 5 for adjusting the smoke concentration and a pressure sensor 6 for monitoring the pressure inside the buffer chamber 4. The adjustment unit 5 and the pressure sensor 6 are effectively electrically connected.

[0026] The variable-concentration aerosol generating device of this invention has an adjustment unit 5 and a pressure sensor 6 installed in the buffer chamber 4. The pressure sensor 6 monitors the pressure inside the buffer chamber 4, and the adjustment unit 5 adjusts the pressure inside the buffer chamber 4 to keep it constant. Thus, the adjustment unit 5 and the pressure sensor 6 can coordinately control the concentration of the smoke in the buffer chamber 4, so that the concentration of the smoke in the buffer chamber 4 is always at the set value, which can ensure that the uniformity and consistency of the smoke release is high.

[0027] In this embodiment, the adjustment unit 5 includes a piston 51, a drive mechanism 52 for driving the piston 51 to reciprocate within the buffer chamber 4, a slide rail 53 for sliding the piston 51, and limiting mechanisms 54 located at both ends of the slide rail 53. The drive mechanism 52 is effectively electrically connected to the piston 51 and is disposed on one side of the limiting mechanism 54. The limiting mechanism 54 includes a first limiting member 541 located near the tobacco unit 3 and a second limiting member 542 located near the suction unit 2. The second limiting member 542 has a hollow structure, allowing smoke to pass through it and ensuring that the presence of the second limiting member 542 does not affect the vaping experience. The drive mechanism 52 includes a micro motor, which can be any existing motor model or structure suitable for installation in heated non-combustible cigarette appliances. The micro motor is started and stopped by the drive chip. When the appliance's start switch is turned on, the micro motor and its components are immediately powered on and put into standby mode. The suction unit 2 draws the smoke into the buffer chamber 4, and the pressure in the buffer chamber 4 increases. When the pressure sensor 6 exceeds the pressure set value, it feeds back to the drive chip of the micro motor, and the drive chip control program drives the micro motor.

[0028] In this embodiment, the buffer chamber 4 is also equipped with a heating unit 41 and a temperature sensor 42, which are effectively electrically connected. The heating unit 41 in the buffer chamber 4 can heat the air in the buffer chamber 4, so that the temperature in the buffer chamber 4 reaches and is maintained at the set temperature, ensuring that the flue gas in the buffer chamber 4 does not liquefy excessively.

[0029] In this embodiment, the suction unit 2 includes a suction pump 21 located at the smoke outlet of the tobacco unit 3, a mouthpiece 22 located at the end of the device unit 1, a suction valve 23 located at the smoke inlet of the mouthpiece 22, and a suction valve control switch 24 located on the outer surface of the device unit 1.

[0030] In this embodiment, the appliance unit 1 includes a housing 11, a heating component (not shown in the figure) located inside the housing 11 for heating the tobacco unit 3, and a start switch 12 for activating the heating component. The heating component can be a combination of one or more of the following: center heating, peripheral heating, electromagnetic heating, infrared heating, etc.

[0031] In this embodiment, the tobacco unit 3 includes tobacco and a container for holding or wrapping the tobacco. The tobacco unit 3 can be a tobacco capsule or other structural forms containing tobacco.

[0032] The working process of the variable flue gas concentration aerosol generating device in this embodiment of the invention includes two processes: buffering flue gas and extracting pre-buffered flue gas.

[0033] The specific process of buffering the smoke is as follows: Pressing the start switch 13 in appliance unit 1 activates the heating component 12. After the tobacco unit 3 is heated to the set temperature, the suction pump 21 in the suction unit 2 starts. The aerosol generated in the tobacco unit 3 enters the buffer chamber 4 through the suction pump. The piston 51 can be moved back and forth by setting the pressure inside the buffer chamber 4, changing the volume of the buffer chamber 4 and indirectly controlling the concentration of smoke inside it. After the suction pump 21 draws smoke from the tobacco unit 3 until the smoke pressure inside the buffer chamber 4 reaches the set value, it continues to draw smoke. The drive mechanism 52 drives the piston 51 to move from the second limit member 542 to the first limit member 541 on the slide rail 53, increasing the volume inside the buffer chamber 4 to maintain a constant pressure. After the tobacco unit 3 has completed the preset drawing process, the piston 51 is usually located between the second limit member 542 and the first limit member 541. The device can buffer the smoke from multiple tobacco units 3 according to user needs. When the piston 51 moves to the position of the first limit member 541, the device's protection function is triggered, and the suction pump 21 stops sucking (after the piston moves to the first limit member 541, it continues to suck a small amount of buffered gas. The pressure sensor 6 detects that the pressure in the buffer chamber 4 is slightly higher than the set pressure value, and feeds back to the central control program, which can then control the suction pump 21 to stop sucking). The amount of smoke in the buffer chamber 4 reaches its maximum buffer volume under the condition of the preset smoke concentration. The automatic protection function of the micro motor is as follows: after the piston moves to the first limit member 541, when it continues to buffer a small amount of gas, the pressure in the buffer chamber 4 is slightly higher than the set pressure, and the control program of the drive chip stops driving the micro motor; after the piston moves to the second limit member 542, it continues to suck and consume the gas in the buffer chamber 4. Even if the pressure in the buffer chamber 4 is lower than the set pressure, the micro motor will not continue to drive the piston 51 to move to the right.

[0034] The specific process of inhaling pre-buffered smoke is as follows: A suction valve 23 is provided at the smoke inlet of the mouthpiece 22. The suction valve 23 is a one-way valve, which allows the smoke to flow only from the cavity to the filter. When the consumer inhales, he / she presses the suction valve control switch 24. Under the combined action of the suction action of the human mouth and the piston 51 pushing to keep the pressure in the buffer cavity 4 constant, the smoke in the buffer cavity 4 enters the human mouth. The uniformity and consistency of the smoke release are high, ensuring a good inhalation experience for the user.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A smoke concentration variable aerosol generating device, comprising a utensil unit (1) for heating non-combustion cigarettes and a suction unit (2) mounted on the utensil unit (1), wherein a tobacco unit (3) is arranged in the utensil unit (1), the tobacco unit (3) is connected with the suction unit (2), and a buffer cavity (4) is further arranged in the utensil unit (1), the buffer cavity (4) is arranged between the tobacco unit (3) and the suction unit (2), characterized in that: The buffer chamber (4) is also provided with an adjustment unit (5) for adjusting the concentration of flue gas and a pressure sensor (6) for monitoring the pressure inside the buffer chamber (4). The adjustment unit (5) is effectively electrically connected to the pressure sensor (6). The pressure sensor (6) monitors the pressure inside the buffer chamber (4). The adjustment unit (5) adjusts the pressure inside the buffer chamber (4) to remain constant. Thus, the adjustment unit (5) and the pressure sensor (6) can coordinate and control the concentration of flue gas in the buffer chamber (4) so ​​that the concentration of flue gas in the buffer chamber (4) is always at the set value. The adjustment unit (5) includes a piston (51), a drive mechanism (52) for driving the piston (51) to reciprocate in the buffer chamber (4), a slide rail (53) for sliding the piston (51), and a limiting mechanism (54) located at both ends of the slide rail (53). The drive mechanism (52) is effectively electrically connected to the piston (51). The drive mechanism (52) is located on one side of the limiting mechanism (54). ​ 2. The aerosol generating device with variable flue gas concentration according to claim 1, characterized in that: The limiting mechanism (54) includes a first limiting member (541) located near the tobacco unit (3) and a second limiting member (542) located near the suction unit (2), the second limiting member (542) being a hollow structure.

3. The aerosol generating device with variable flue gas concentration according to claim 1, characterized in that: The drive mechanism (52) includes a micro motor.

4. The aerosol generating apparatus with variable flue gas concentration according to any one of claims 1-3, characterized in that: The buffer cavity (4) is also provided with a heating unit (41) and a temperature sensor (42), and the heating unit (41) and the temperature sensor (42) are effectively electrically connected.

5. The aerosol generating apparatus with variable flue gas concentration according to any one of claims 1-3, characterized in that: The suction unit (2) includes a suction pump (21) located at the smoke outlet of the tobacco unit (3), a mouthpiece (22) located at the end of the appliance unit (1), a suction valve (23) located at the smoke inlet of the mouthpiece (22), and a suction valve control switch (24) located on the outer surface of the appliance unit (1).

6. The aerosol generating apparatus with variable flue gas concentration according to any one of claims 1-3, characterized in that: The appliance unit (1) includes a housing (11), a heating component located inside the housing (11) for heating the tobacco unit (3), and a start switch (12) for starting the heating component.

7. The aerosol generating apparatus with variable flue gas concentration according to any one of claims 1-3, characterized in that: The tobacco unit (3) includes tobacco and a container for holding or wrapping the tobacco.

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