An aerosol-generating device

Abstract

The application discloses an aerosol generating device, which comprises a tool unit for heating non-combustion cigarettes and a suction unit mounted on the tool unit, wherein a tobacco unit is arranged in the tool unit and connected with the suction unit, a buffer cavity is further arranged in the tool unit and located between the tobacco unit and the suction unit, a supply unit for supplementing smoke concentration and a pressure sensor for monitoring the smoke pressure in the buffer cavity are further arranged in the buffer cavity, and the supply unit is effectively connected with the pressure sensor. The aerosol generating device provided by the application can keep the total smoke concentration in the buffer cavity unchanged during each suction by arranging the buffer cavity and controlling the supply unit to generate "supply aerosol" according to the size of the buffer cavity pressure.

Description

Technical Field

[0001] This application relates to the field of heated non-combustible cigarette technology, and in particular to an aerosol generating device. 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, which sets up a buffer chamber and controls the supply unit to generate "supply aerosol" according to the pressure of the buffer chamber, thereby keeping the total concentration of flue gas in the buffer chamber constant during each suction.

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

[0007] An 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 also contains a supply unit for replenishing the smoke concentration and a pressure sensor for monitoring the smoke pressure within the buffer chamber. The supply unit and the pressure sensor are electrically connected.

[0008] Preferably, the replenishment unit includes an atomizer replenishment chamber, a siphon mechanism, and a first heating mechanism connected in sequence. The atomizer replenishment chamber is located at the smoke inlet of the buffer chamber, and the first heating mechanism is located inside the buffer chamber. The first heating mechanism is provided with a plurality of air outlets.

[0009] Preferably, the siphon mechanism includes siphon cotton, and a portion of the siphon cotton is located inside the first heating mechanism.

[0010] Preferably, a temperature sensor is also provided inside the buffer cavity, and the temperature sensor is located inside the smoke outlet of the buffer cavity.

[0011] Preferably, the buffer cavity is further provided with a second heating mechanism, which is located away from the first heating mechanism and close to the temperature sensor, and the second heating mechanism is effectively electrically connected to the temperature sensor.

[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 third heating mechanism located inside the housing for heating the tobacco unit, and a buffer switch for activating the third heating mechanism.

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

[0015] The aerosol generating apparatus of the present invention has the following advantages over the prior art:

[0016] The aerosol generating device of the present invention sets up a replenishment unit in the buffer chamber, monitors the pressure in the buffer chamber through a pressure sensor, and controls the replenishment unit to generate "replenishment aerosol" through a feedback program, thereby keeping the smoke concentration in the buffer chamber constant and significantly improving the uniformity and consistency of the amount of smoke released. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the aerosol generation device in an embodiment of the present invention.

[0019] Figure label:

[0020] 1. Device unit; 11. Housing; 12. Buffer switch; 2. Suction unit; 21. Suction pump; 22. Nozzle; 23. Suction valve; 24. Suction valve control switch; 3. Tobacco unit; 4. Buffer chamber; 5. Supply unit; 51. Atomizing agent supply chamber; 52. Siphon mechanism; 53. First heating mechanism; 6. Pressure sensor; 7. Temperature sensor; 8. Second heating mechanism. Detailed Implementation

[0021] 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.

[0022] like Figure 1 As shown, this embodiment of the invention provides an aerosol generating device, 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 contains tobacco units 3 connected to the suction unit 2. The apparatus unit 1 also contains a buffer chamber 4 located between the tobacco units 3 and the suction unit 2. The buffer chamber 4 can buffer aerosols generated by multiple tobacco units 3. The tobacco units 3 can be heated individually to generate aerosols containing nicotine and flavor components, which then enter the buffer chamber 4. The buffer chamber 4 also contains a supply unit 5 for replenishing the smoke concentration and a pressure sensor 6 for monitoring the smoke pressure inside the buffer chamber 4. The supply unit 5 and the pressure sensor 6 are effectively electrically connected. The pressure sensor 6 can monitor the smoke pressure inside the buffer chamber 4 in real time and can control the supply unit 6 to generate aerosols for supplying according to the set pressure inside the buffer chamber 4, thereby maintaining the smoke pressure inside the buffer chamber 4 at a set value and improving the uniformity and consistency of the smoke release.

[0023] In this embodiment, the tobacco unit 3 and the buffer chamber 4 can be set separately. The buffer chamber 4 can buffer the aerosols generated by multiple tobacco units 2, thereby increasing the concentration of aroma components and other substances in the buffer chamber 4 according to the user's needs, and improving the consumer's smoking satisfaction. Before smoking, the pressure of the buffer chamber 4 can be set to control the generation of "replenishment aerosol" by the replenishment unit 5, thereby keeping the total concentration of smoke in the buffer chamber 4 constant during each smoking session.

[0024] In this embodiment, the replenishment unit 5 includes an atomizer replenishment chamber 51, a siphon mechanism 52, and a first heating mechanism 53 connected in sequence. The atomizer replenishment chamber 51 is located at the smoke inlet of the buffer chamber 4, and the first heating mechanism 53 is located inside the buffer chamber, with several air outlets. The siphon mechanism 52 includes siphon cotton, a portion of which is located inside the first heating mechanism 53, facilitating the rapid evaporation of the atomizer liquid in the siphon cotton into the buffer chamber 4 during the heating process of the first heating mechanism 53. According to the gas state equation pV = nRT, at a fixed temperature and volume, the concentration of smoke is positively correlated with pressure. When the pressure sensor 6 detects a decrease in the smoke pressure in the buffer chamber 4, the siphon mechanism 52 transports the atomizer liquid in the atomizer replenishment chamber to the first heating mechanism 53 through siphon action. Then, the first heating mechanism 53 is controlled to heat and generate a "replenishment aerosol," which is released into the buffer chamber 4, replenishing the smoke until the set pressure is reached, thereby ensuring that the concentration of smoke in the buffer chamber 4 remains constant before each puff. The liquid atomizer in the atomizer supply chamber 51 can be supplemented with ingredients such as tobacco essential oil.

[0025] In this embodiment, a temperature sensor 7 is also provided inside the buffer cavity 4. The temperature sensor 7 can monitor the temperature inside the buffer cavity 4 in real time. The temperature sensor 7 is located inside the smoke outlet of the buffer cavity 4. The temperature inside the smoke outlet of the buffer cavity 4 is the lowest temperature inside the buffer cavity 4. If the temperature here meets the requirements, then the temperature in other places inside the buffer cavity 4 will definitely meet the requirements.

[0026] In this embodiment, a second heating mechanism 8 is also provided in the buffer cavity 4. The second heating mechanism 8 can heat the flue gas in the buffer cavity 4 to a set temperature so that the flue gas in the buffer cavity 4 will not liquefy. The second heating mechanism 8 is set away from the first heating mechanism 53 and close to the temperature sensor 7. The second heating mechanism 8 is effectively electrically connected to the temperature sensor 7.

[0027] 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.

[0028] In this embodiment, the appliance unit 1 includes a housing 11, a third heating mechanism (not shown in the figure) located inside the housing 11 for heating the tobacco unit, and a buffer switch 12 for activating the third heating mechanism.

[0029] In this embodiment, the tobacco unit 3 includes tobacco and a container for holding or wrapping the tobacco.

[0030] The working process of the aerosol generating device in this embodiment is as follows:

[0031] 1. Buffering smoke: Press the buffer switch 12 to start the appliance. After the tobacco unit 3 is heated to the set temperature, the suction pump 21 starts. The aerosol generated in the tobacco unit 3 enters the buffer chamber 4 through the suction pump 21. The heating and buffering of the tobacco unit 3 can be controlled independently. Multiple tobacco units 3 can be manually replaced. Buffer the aerosol generated by multiple tobacco units 3 first. After buffering is complete, press the buffer switch 12 again to stop buffering.

[0032] 2. Suctioning pre-buffered smoke: A suction valve 23 (one-way valve) is provided at the suction port of the mouthpiece 22. The suction valve 23 allows smoke to flow only from the buffer chamber 4 to the mouthpiece 22. When the consumer sucks, he presses the suction valve control switch 24. Under the negative pressure of suction in the human mouth, the smoke in the buffer chamber 4 enters the human mouth. During suction, the pressure sensor 6 monitors the smoke pressure in the buffer chamber 4 in real time and feeds it back to the control program. The control program controls the first heating mechanism 53 to heat and generate "replenishment aerosol" to maintain the smoke concentration in the buffer chamber 4.

[0033] 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. An aerosol generating device, comprising an apparatus unit (1) for heating non-combustible cigarettes and a suction unit (2) mounted on the apparatus unit (1), wherein the apparatus unit (1) contains a tobacco unit (3) connected to the suction unit (2), and the apparatus unit (1) further contains a buffer chamber (4) disposed between the tobacco unit (3) and the suction unit (2), characterized in that: The buffer chamber (4) is also provided with a replenishment unit (5) for replenishing the smoke concentration and a pressure sensor (6) for monitoring the smoke pressure inside the buffer chamber (4). The replenishment unit (5) is effectively electrically connected to the pressure sensor (6) and is used to control the operation of the replenishment unit (5) to generate replenishment aerosol to compensate for the smoke concentration inside the buffer chamber (4) according to the change of pressure inside the buffer chamber (4). The replenishment unit (5) includes an atomizer replenishment chamber (51), a siphon mechanism (52) and a first heating mechanism (53) connected in sequence. The atomizer replenishment chamber (51) is located at the smoke inlet of the buffer chamber (4), and the first heating mechanism (53) is located inside the buffer chamber (4). The first heating mechanism (53) is provided with several air outlets.

2. The aerosol generating apparatus according to claim 1, characterized in that: The siphon mechanism (52) includes siphon cotton, a portion of which is located inside the first heating mechanism (53).

3. The aerosol generating apparatus according to any one of claims 1-2, characterized in that: The buffer chamber (4) is also equipped with a temperature sensor (7), which is located inside the smoke outlet of the buffer chamber (4).

4. The aerosol generating apparatus according to claim 3, characterized in that: The buffer cavity (4) is also provided with a second heating mechanism (8). The second heating mechanism (8) is located away from the first heating mechanism (53) and close to the temperature sensor (7). The second heating mechanism (8) is effectively electrically connected to the temperature sensor (7).

5. The aerosol generating apparatus according to any one of claims 1-2, 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 according to any one of claims 1-2, characterized in that: The appliance unit (1) includes a housing (11), a third heating mechanism located inside the housing (11) for heating the tobacco unit (3), and a buffer switch (12) for activating the third heating mechanism.

7. The aerosol generating apparatus according to any one of claims 1-2, characterized in that: The tobacco unit (3) includes tobacco and a container for holding or wrapping the tobacco.

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