An aerosol-forming device

Abstract

The application relates to the technical field of aerosol forming devices, in particular to an aerosol forming device, which comprises a liquid storage component provided with an exhaust passage; a heating body which surrounds a liquid storage cavity together with the liquid storage component; and a base on which the liquid storage component and the heating body are mounted; wherein the base is provided with a collection cavity, a gas cavity, an airflow passage and a recovery passage, the collection cavity is located below the exhaust passage, and the liquid to be recovered generated in the exhaust passage can enter the collection cavity; the cross-sectional area of the airflow passage is smaller than that of the gas cavity, the gas cavity is in communication with the outside, so that the liquid to be recovered in the collection cavity can be sucked through the recovery passage and heated by the heating body. The aerosol forming device provided by the application can collect the liquid to be recovered and re-atomize it until the liquid to be recovered is completely eliminated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aerosol forming devices, in particular to an aerosol forming device. BACKGROUND

[0002] The principle of the aerosol forming device is that liquid in the liquid storage compartment is transmitted to the porous heating element to generate liquid aerosol by atomization, and the porous heating element is electrically connected with the battery rod component, so that the porous heating element is heated. However, liquid aerosol particles are extremely easy to deposit in the airway to form liquid to be recovered, and too much liquid to be recovered will enter the battery rod component; at the same time, there may be a situation that the oil compartment is not sealed well, causing liquid in the oil compartment to leak to the battery rod component. The liquid to be recovered and the leaked oil entering the battery rod component are easy to cause the electronic components of the battery rod component to fail or even be damaged, resulting in that the aerosol forming device cannot work normally, and causing the user to have an uncomfortable experience. SUMMARY

[0003] The present application provides an aerosol forming device which can eliminate the liquid to be recovered and the leaked oil in the aerosol forming device.

[0004] The present application provides an aerosol forming device, comprising:

[0005] a liquid storage component, the liquid storage component being provided with an exhaust passage;

[0006] a heating element, the heating element and the liquid storage component surrounding a liquid storage cavity;

[0007] a base, the liquid storage component and the heating element being mounted on the base;

[0008] wherein the base is provided with a collection cavity, a gas cavity, an airflow passage and a recovery passage, the collection cavity being located below the exhaust passage, and the liquid to be recovered generated in the exhaust passage being capable of entering the collection cavity;

[0009] the cross-sectional area of the airflow passage being smaller than the cross-sectional area of the gas cavity, the gas cavity being in communication with the outside, so that the liquid to be recovered in the collection cavity can be sucked through the recovery passage and heated by the heating element.

[0010] wherein the outlet of the airflow passage is close to the recovery passage, and the outlet of the recovery passage is higher than the outlet of the airflow passage.

[0011] wherein the airflow passage surrounds the recovery passage.

[0012] wherein the airflow passage at least comprises a first airflow passage and a second airflow passage which are in communication in sequence, and the first airflow passage is in communication with the outside through the gas cavity;

[0013] The cross-sectional area of the first airflow passage is greater than that of the second airflow passage in the direction of gas entry.

[0014] The aerosol forming device further comprises a recovery member mounted to the base.

[0015] The recovery passage and at least part of the airflow passage are provided in the recovery member.

[0016] The base and the recovery member have a gap therebetween, and the gap forms the second airflow passage.

[0017] The recovery member is provided with at least one groove, and the groove and the base enclose the second airflow passage.

[0018] The recovery passage extends downward from the bottom wall of the groove.

[0019] The base has an integrally formed recovery portion, and the recovery portion is provided with at least one notch, and the notch forms the second airflow passage.

[0020] The recovery passage is arranged close to the notch.

[0021] The aerosol forming device further comprises an aerosol passage in communication with the exhaust passage, and the aerosol passage is used to allow the heated liquid to be recovered to enter the exhaust passage.

[0022] The aerosol passage is further used to allow the liquid to be recovered in the exhaust passage to enter the collection cavity.

[0023] The aerosol forming device is provided with one aerosol passage, and the aerosol passage is located on one side of the heating element.

[0024] The recovery passage is away from the aerosol passage.

[0025] The aerosol forming device is provided with at least two aerosol passages, and the heating element is located between the aerosol passages.

[0026] The recovery passage is located between the aerosol passages.

[0027] The aerosol forming device further comprises an isolation member mounted to the heating element, and the isolation member is used to isolate the liquid storage cavity and the aerosol passage.

[0028] The aerosol forming device provided by the application, the base is provided with a collection cavity, a gas cavity, an airflow channel and a recovery channel, the collection cavity is located below the exhaust channel, the liquid to be recovered in the exhaust channel can enter the collection cavity, so that the collection cavity collects the liquid to be recovered, preventing the liquid to be recovered from remaining in other parts. At the same time, the gas cavity is in communication with the outside world, when the user inhales the aerosol forming device, the outside air enters the gas cavity, after the air enters the airflow channel from the gas cavity, due to the fact that the cross-sectional area of the airflow channel is smaller than that of the gas cavity, the speed of the air flowing through the airflow channel increases, a negative pressure is generated at the outlet of the airflow channel, that is, a pressure difference is generated between the outlet of the airflow channel and other parts, under the action of the pressure difference, a siphon effect is generated, and then the liquid to be recovered in the collection cavity is sucked and heated through the heating body, so that the liquid to be recovered is re-atomized to form an aerosol, the aerosol is discharged outside the aerosol forming device through the exhaust channel, and the liquid to be recovered is completely eliminated.

[0029] It should be understood that the above general description and the following detailed description are only exemplary and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The structure schematic diagram of the aerosol forming device provided by the application in a specific embodiment;

[0031] Figure 2 The cross-sectional view of the aerosol forming device provided by the application in a specific embodiment;

[0032] Figure 3 The cross-sectional view of the aerosol forming device provided by the application in a specific embodiment from another angle;

[0033] Figure 4 The exploded view of part of the liquid storage component and the base of the aerosol forming device provided by the application in a specific embodiment;

[0034] Figure 5 The top view of the base of the aerosol forming device provided by the application in a specific embodiment;

[0035] Figure 6 The cross-sectional view of the aerosol forming device in another specific embodiment;

[0036] Figure 7 The exploded view of part of the liquid storage component and the base of the aerosol forming device provided by the application in another specific embodiment;

[0037] Figure 8 The cross-sectional view of the aerosol forming device in another specific embodiment;

[0038] Figure 9 Structure diagram of a recovery member of an aerosol forming device provided in another embodiment of the present application;

[0039] Figure 10 Cross-sectional view of an aerosol forming device provided in another embodiment of the present application;

[0040] Figure 11 Structure diagram of a recovery portion of an aerosol forming device provided in another embodiment of the present application.

[0041] Reference Signs:

[0042] 1 - liquid storage member;

[0043] 11 - air discharge passage;

[0044] 2 - heating element;

[0045] 3 - liquid storage cavity;

[0046] 4 - base;

[0047] 41 - collection cavity;

[0048] 42 - gas cavity;

[0049] 43 - air flow passage;

[0050] 431 - first air flow passage;

[0051] 432 - second air flow passage;

[0052] 44 - recovery passage;

[0053] 45 - merging passage;

[0054] 5 - recovery member;

[0055] 51 - recess;

[0056] 6 - recovery portion;

[0057] 61 - notch;

[0058] 7 - aerosol passage;

[0059] 8 - isolation member;

[0060] 9 - atmospheric air communication hole;

[0061] 10 - liquid absorbing cotton.

[0062] The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application. DETAILED DESCRIPTION

[0063] In order to better understand the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the drawings.

[0064] It should be clear that the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0065] As shown in Figure 1 , the present application provides an aerosol forming device which can be used for atomizing liquid matrix such as tobacco liquid, medicine liquid, etc., and then forming aerosol for users to smoke, etc. The present application specifically introduces the aerosol forming device through the following embodiments.

[0066] As shown in Figures 1-3 , the present embodiment provides an aerosol forming device for atomizing liquid matrix such as tobacco liquid, medicine liquid, etc., which can be used in different fields such as electronic cigarettes, medical treatment, etc. The aerosol generating device comprises a liquid storage component 1, a heating body 2, and a base 4, wherein the liquid storage component 1 is provided with an exhaust passage 11; the heating body 2 and the liquid storage component 1 enclose a liquid storage cavity 3; the liquid storage component 1 and the heating body 2 are installed on the base 4. When the aerosol forming device works, the heating body 2 generates heat and atomizes the liquid in the liquid storage cavity 3 to generate aerosol (the direction of the thick arrow in Figure 2 is the direction of the oil in the liquid storage cavity 3 flowing to the heating body 2), and the aerosol is discharged outside the aerosol forming device through the exhaust passage 11 (the direction of the thin arrow in Figures 2-3 is the direction of the aerosol discharge), for users to use. When the high-temperature aerosol encounters parts with lower temperature such as the exhaust passage 11, it will be liquefied to generate liquid to be recovered, or there is a risk of liquid leakage when the liquid storage cavity 3 is poorly sealed, and the condensed liquid and the leaked liquid affect the user experience of the aerosol generating device.

[0067] In order to solve the technical problem, as shown in Figures 2-5 , the base 4 of the aerosol generating device is provided with a collection cavity 41, a gas cavity 42, an airflow passage 43, and a recovery passage 44, the collection cavity 41 is located below the exhaust passage 11, and the liquid to be recovered in the exhaust passage 11 can enter the collection cavity 41; the cross-sectional area of the airflow passage 43 is smaller than that of the gas cavity 42, and the gas cavity 42 is in communication with the outside, so that the liquid to be recovered in the collection cavity 41 can be sucked through the recovery passage 44 and heated by the heating body 2. Wherein, the liquid to be recovered can include condensed liquid generated in the exhaust passage 11 or liquid leaked from the liquid storage cavity 3 into the collection cavity 41, etc.

[0068] In this embodiment, the base 4 is provided with a collection cavity 41, a gas cavity 42, an airflow passage 43 and a recovery passage 44. The collection cavity 41 is located below the exhaust passage 11, and the liquid to be recovered in the exhaust passage 11 can enter the collection cavity 41. Figure 3 The direction of the medium arrow is the direction of the liquid to be recovered into the collection cavity 41, so that the collection cavity 41 collects the liquid to be recovered, preventing the liquid to be recovered from remaining in other parts. At the same time, the gas cavity 42 is in communication with the outside world, and when the user sucks the aerosol forming device, Figure 4 The direction of the medium arrow is the direction of the air flow in the aerosol forming device, and the outside air enters the gas cavity 42. After the air from the gas cavity 42 enters the airflow passage 43, the speed of the air flowing through the airflow passage 43 increases due to the smaller cross-sectional area of the airflow passage 43 than that of the gas cavity 42. A negative pressure is generated at the outlet of the airflow passage 43, i.e. a pressure difference is generated between the outlet of the airflow passage 43 and other parts. Under the action of the pressure difference, a siphon effect is generated, and then the liquid to be recovered in the collection cavity 41 is sucked through the recovery passage 44 and heated by the heating body 2, so that the liquid to be recovered is re-atomized to form an aerosol. The aerosol is discharged outside the aerosol forming device through the exhaust passage 11, until the liquid to be recovered is completely eliminated, avoiding the liquid to be recovered entering the electrical components of the aerosol forming device, causing the electrical components to fail or even be damaged.

[0069] In a specific embodiment, as shown in Figures 4-5 The outlet of the airflow passage 43 is close to the recovery passage 44.

[0070] In this embodiment, the outlet of the airflow passage 43 is close to the recovery passage 44, so that when the air flows out of the outlet of the airflow passage 43, Figure 4 The direction of the medium arrow is the direction of the air flow, and the liquid to be recovered in the collection cavity 41 is adsorbed to the recovery passage 44 and sprayed out of the outlet of the recovery passage 44.

[0071] Specifically, as shown in Figure 4 To enhance the adsorption force generated by the recovery passage 44, the airflow passage 43 surrounds the recovery passage 44.

[0072] In this embodiment, the airflow passage 43 is provided as two, and the recovery passage 44 is provided as one. The two airflow passages 43 are arranged on both sides of the recovery passage 44, so that when the air flows out of the outlets of the two airflow passages 43, adsorption forces are generated at the outlets of the two airflow passages 43, thereby enhancing the adsorption force at the outlet of the recovery passage 44. In other embodiments, the number of airflow passages 43 can be set to three, four or more, and the number of recovery passages 44 can be set to two, three or more. This embodiment does not make specific limitations.

[0073] Specifically, such as Figure 5 As shown, the cross-sectional area of ​​the recovery channel 44 is smaller than that of the airflow channel 43, so that the liquid to be recovered can be ejected from the recovery channel 44 at high speed, ensuring that the ejected liquid to be recovered is sprayed onto the heating element 2 for heating.

[0074] In another specific embodiment, such as Figure 8 As shown, the airflow channel 43 includes at least a first airflow channel 431 and a second airflow channel 432 connected in sequence. The first airflow channel 431 is connected to the outside through the gas chamber 42. Along the direction of gas entry, the cross-sectional area of ​​the first airflow channel 431 is larger than the cross-sectional area of ​​the second airflow channel 432.

[0075] In this embodiment, the airflow channel 43 includes a first airflow channel 431 and a second airflow channel 432 connected in sequence. The first airflow channel 431 is connected to the outside through the gas chamber 42. Since the cross-sectional area of ​​the first airflow channel 431 is smaller than the cross-sectional area of ​​the gas chamber 42, the air is accelerated once when it flows through the first airflow channel 431. Figure 8 The direction of the middle arrow indicates the direction of air flow in the aerosol device. Along the direction of gas entry, the cross-sectional area of ​​the first airflow channel 431 is larger than that of the second airflow channel 432. When the air passes through the first airflow channel 431 and then through the second airflow channel 432, the air velocity is accelerated twice, which increases the adsorption force at the outlet of the second airflow channel 432. This increases the adsorption effect on the liquid to be recovered in the collection chamber 41, ensuring that the liquid to be recovered in the collection chamber 41 is completely and quickly sprayed onto the heating element 2 through the recovery channel 44 for re-atomization.

[0076] Specifically, such as Figures 8-9 As shown, the aerosol forming apparatus also includes a recovery component 5, which is mounted on the base 4; a recovery channel 44 and at least a portion of the airflow channel 43 are disposed on the recovery component 5.

[0077] In this embodiment, the aerosol forming apparatus further includes a recovery component 5, which is installed on the base 4; the recovery channel 44 and at least part of the airflow channel 43 are disposed on the recovery component 5, making the structure of the base 4 simple and easy to process.

[0078] More specifically, such as Figure 8 As shown, there is a gap between the base 4 and the recycling component 5, and the gap forms a second airflow channel 432.

[0079] In this embodiment, there is a gap between the base 4 and the recovery component 5, forming a second airflow channel 432. The structure is simple, allowing the recovery component 5 to be installed on the base 4 to form the second airflow channel 432, eliminating the need for additional structures on the base 4 or the recovery component 5 to form the second airflow channel 432. When outside air enters the aerosol forming device in this embodiment (…Figure 8 The air flows through the gas cavity 42, the first airflow passage 431 and the second airflow passage 432 in sequence. When the air flows through the second airflow passage 432, i.e. the gap between the base 4 and the recovery member 5, adsorption occurs at the gap. The recovery passage 44 is close to the gap, so that the liquid to be recovered in the collection cavity 41 is sprayed out through the recovery passage 44 and flows to the heating body 2 along the air flow for heating.

[0080] Alternatively, as shown in Figure 9 , the recovery member 5 is provided with at least one groove 51, and the groove 51 and the base 4 enclose the second airflow passage 432. The recovery passage 44 extends downward from the bottom wall of the groove 51.

[0081] In this embodiment, the recovery member 5 is provided with two grooves 51, and the two grooves 51 and the base 4 enclose two second airflow passages 432. The second airflow passage 432 can be enclosed by providing the groove 51 on the recovery member 5, which is simple in structure and convenient to process.

[0082] Alternatively, as shown in Figures 10-11 , the base 4 has an integral recovery portion 6, the recovery portion 6 is provided with at least one gap 61, and the gap 61 forms the second airflow passage 432. The recovery passage 44 is close to the gap 61.

[0083] In this embodiment, the base has an integral recovery portion 6, and the recovery portion 6 is provided with two opposite gaps 61, each of which forms a second airflow passage 432. The second airflow passage 432 can be formed by providing the gap 61 on the recovery portion 6, which is simple in structure and convenient to process the recovery portion 6. When the external air enters the aerosol forming device in this embodiment Figure 10 , the air flows through the gas cavity 42, the first airflow passage 431 and the second airflow passage 432 in sequence. When the air flows through the second airflow passage 432, i.e. the gap 61, adsorption occurs at the gap 61. The recovery passage 44 is close to the gap 61, so that the liquid to be recovered in the collection cavity 41 is sprayed out through the recovery passage 44 and flows to the heating body 2 along the air flow for heating.

[0084] As shown in Figure 2 , 8 , 10, the sidewall of the aerosol forming device is provided with an atmosphere communication hole 9 to communicate the gas cavity 42 with the outside, so that the external air directly enters the gas cavity 42 from the atmosphere communication hole 9. Alternatively, as shown in Figure 6As shown, the atmospheric communication hole 9 is arranged on the bottom wall of the aerosol forming device. The arrangement position of the atmospheric communication hole 9 can be selected according to actual needs, as long as the external atmosphere only enters the gas cavity 42.

[0085] In the above embodiments, as shown, Figure 3 The aerosol forming device further comprises an aerosol channel 7 in communication with the exhaust channel 11, the aerosol channel 7 being configured to allow the heated liquid to be recycled to enter the exhaust channel 11; the aerosol channel 7 is further configured to allow the liquid to be recycled in the exhaust channel 11 to enter the collection cavity 41.

[0086] In this embodiment, the aerosol channel 7 is in communication with the exhaust channel 11, the heating body 2 heats and atomizes the liquid in the liquid storage cavity 3 to form an aerosol, the aerosol enters the exhaust channel 11 through the aerosol channel 7, and the aerosol is discharged outside the aerosol forming device through the exhaust channel 11; the liquid to be recycled generated in the exhaust channel 11 can flow into the aerosol channel 7 and then flow into the collection cavity 41, thereby completing the collection of the liquid to be recycled, preventing the liquid to be recycled from flowing through the exhaust channel 11 and not being able to directly enter the collection cavity 41, thereby causing the liquid to be recycled to remain in other parts.

[0087] Specifically, as shown, Figures 3-5 The base 4 is provided with a collection channel 45 in communication with the collection cavity 41, and the collection channel 45 is in communication with the aerosol channel 7, the liquid to be recycled enters the collection channel 45 through the aerosol recycling channel 44, and finally flows into the collection cavity 41. In this embodiment, the collection channel 45 can be cylindrical, so that the liquid to be recycled can quickly flow through the collection channel 45; moreover, the collection channel 45 is provided with two, and the two collection channels 45 are respectively arranged on opposite sides of the base 4, thereby improving the efficiency of collecting the liquid to be recycled into the collection cavity 41. In other embodiments, the shape of the collection channel 45 and the number of the collection channel 45 can be selected according to actual needs, and this embodiment does not make specific limitations.

[0088] In a specific embodiment, in order to ensure that the liquid adsorbed from the collection cavity 41 can be sprayed onto the heating surface of the heating body 2 through the recycling channel 44, as shown, Figures 6-7 The aerosol forming device is provided with one aerosol channel 7, and the aerosol channel 7 is located on one side of the heating body 2; the recycling channel 44 is away from the aerosol channel 7.

[0089] In this embodiment, when the user uses the aerosol forming device for suction, the external air flows into the aerosol channel 7 from the gas cavity 42 through the airflow channel 43, Figure 7the arrow direction in the figure is the air flow direction), because the aerosol forming device is provided with an aerosol passage 7, and the aerosol passage 7 is located at one side of the heating body 2, so that the air enters the aerosol passage 7 from one side of the heating body 2, and the recovery passage 44 is far away from the aerosol passage 7, so that the liquid adsorbed from the collection cavity 41 can be sprayed to the heating body 2 through the recovery passage 44 for heating, preventing the liquid sprayed from the recovery passage 44 from directly entering the aerosol passage 7 with the air flow Figure 6 the thick arrow direction in the figure is the condensate flow direction, and the thin arrow direction is the aerosol discharge direction), without being heated by the heating body 2. In other embodiments, the number of aerosol passages 7 can be selected according to actual needs, as long as the liquid sprayed from the recovery passage 44 can be heated by the heating body 2.

[0090] Alternatively, as shown in Figure 3 , the aerosol forming device is provided with at least two aerosol passages 7, and the heating body 2 is located between the aerosol passages 7; the recovery passage 44 is located between the aerosol passages 7.

[0091] In this embodiment, when the user uses the aerosol forming device for suction, the external air flows into the aerosol passage 7 from the air flow passage 43 of the gas cavity 42, because the aerosol forming device is provided with two opposite aerosol passages 7, and the heating body 2 is located between the two opposite aerosol passages 7, so that the air enters the two opposite aerosol passages 7 from both sides of the heating body 2, and the recovery passage 44 is located between the aerosol passages 7, so that the liquid adsorbed from the collection cavity 41 can be sprayed to the heating surface of the heating body 2 through the recovery passage 44, preventing the liquid sprayed from the recovery passage 44 from directly entering the aerosol passage 7 with the air flow, without being heated by the heating body 2.

[0092] Specifically, as shown in Figure 2 , Figure 4 , the outlet of the recovery passage 44 is higher than the outlet of the air flow passage 43, so that the outlet of the recovery passage 44 is close to the heating body 2, and then the liquid to be recovered is sprayed from the outlet of the recovery passage 44 to the heating body 2 for heating, preventing the liquid to be recovered from being sprayed from the outlet of the recovery passage 44 without being heated by the heating body 2, but flowing to the aerosol passage 7 with the air flow at the outlet of the air flow passage 43, and then directly discharged to the outside through the exhaust passage 11.

[0093] In order to prevent the liquid in the liquid storage cavity 3 from leaking to the outside of the aerosol forming device through the aerosol passage 7, specifically, as shown in Figures 3-4 , 6-7, the aerosol forming device further comprises a separation piece 8 installed on the heating body 2, and the separation piece 8 is used to separate the liquid storage cavity 3 and the aerosol passage 7.

[0094] In the above embodiments, asFigure 8 As shown, the aerosol forming device can also be provided with liquid absorbing cotton 10, the heating body 2 is sleeved in the liquid absorbing cotton 10, the liquid outlet is arranged in the liquid storage component 1, the oil liquid in the liquid storage cavity 3 is adsorbed by the liquid absorbing cotton 10 through the liquid outlet, the heating body 2 heats the liquid absorbing cotton 10, the liquid in the liquid absorbing cotton 10 is atomized to form an aerosol, and the aerosol is sequentially discharged out of the aerosol forming device through the aerosol channel 7 and the exhaust channel 11.

[0095] The preferred embodiments of the present application have been described above, but the present application is not limited to the above. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An aerosol forming device, characterised in that, The aerosol forming device comprises: a liquid storage component (1) provided with an exhaust passage (11); a heating body (2) surrounding the liquid storage component (1) to form a liquid storage cavity (3); a base (4) on which the liquid storage component (1) and the heating body (2) are installed; wherein the base (4) is provided with a collection cavity (41), a gas cavity (42), an airflow passage (43) and a recovery passage (44), the collection cavity (41) is located below the exhaust passage (11), and the liquid to be recovered generated in the exhaust passage (11) can enter the collection cavity (41); the cross-sectional area of the airflow passage (43) is smaller than that of the gas cavity (42), the gas cavity (42) is in communication with the outside, so that the liquid to be recovered in the collection cavity (41) can be sucked through the recovery passage (44) and heated by the heating body (2); the outlet of the airflow passage (43) is close to the recovery passage (44).

2. An aerosol-forming device according to claim 1, characterised in that, The airflow passage (43) surrounds the recovery passage (44).

3. An aerosol-forming device according to claim 1, characterised in that, The airflow passage (43) at least comprises a first airflow passage (431) and a second airflow passage (432) which are in communication in sequence, and the first airflow passage (431) is in communication with the outside through the gas cavity (42); in the direction of gas entering, the cross-sectional area of the first airflow passage (431) is greater than that of the second airflow passage (432).

4. An aerosol-forming device according to claim 3, characterised in that, The aerosol forming device further comprises a recovery member (5) installed on the base (4); the recovery passage (44) and at least part of the airflow passage (43) are arranged in the recovery member (5).

5. An aerosol-forming device according to claim 4, wherein, There is a gap between the base (4) and the recovery member (5), and the gap forms the second airflow passage (432).

6. An aerosol-forming device according to claim 4, characterised in that, The recovery member (5) is provided with at least one groove (51), and the groove (51) surrounds the second airflow passage (432) with the base (4); the recovery passage (44) extends downward from the bottom wall of the groove (51).

7. An aerosol-forming device according to claim 3, characterised in that, The base (4) has an integral recovery part (6) provided with at least one notch (61), and the notch (61) forms the second airflow passage (432); the recovery passage (44) is arranged close to the notch (61).

8. An aerosol forming device according to any of claims 1 to 7, wherein, The aerosol forming device further comprises an aerosol passage (7) in communication with the exhaust passage (11), and the aerosol passage (7) is used for allowing the heated liquid to be recovered to enter the exhaust passage (11); the aerosol passage (7) is also used for allowing the liquid to be recovered in the exhaust passage (11) to enter the collection cavity (41).

9. An aerosol-forming device according to claim 8, characterised in that, The aerosol forming device is provided with one aerosol passage (7), and the aerosol passage (7) is located on one side of the heating body (2); the recovery passage (44) is away from the aerosol passage (7).

10. An aerosol-forming device according to claim 8, characterised in that, The aerosol forming device is provided with at least two aerosol passages (7), and the heating body (2) is located between the aerosol passages (7); The recovery channels (44) are located between the aerosol channels (7).

11. An aerosol-forming device according to claim 8, characterised in that, The aerosol forming device further comprises an isolating member (8) mounted on the heating body (2), and the isolating member (8) is used for isolating the liquid storage cavity (3) from the aerosol channels (7).

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