CROSS-REFERENCE TO RELATED APPLICATION
This application claims priority to and the benefit of Chinese Patent Application No. 202322183564.0, filed on Aug. 11, 2023, the disclosure of which is incorporated herein by reference in its entirety.
TECHNICAL FIELD
The present application relates to an aerosol generating device.
BACKGROUND
For an aerosol generating device, its air intake structure is closely related to its atomizing function, and the air intake structure may directly affect the performance of the aerosol generating device. Generally, in the aerosol generating device, a pressure relief hole of a breath detector is directly exposed to an air port at the bottom of a housing. That is, there is no shielding between the pressure relief hole and the outside. Thus, an air inlet of the breath detector is very easily affected by the external airflow, which may result in self-start of the breath detector and poor overall reliability of the aerosol generating device.
SUMMARY
According to embodiments of the present application, it is provided an aerosol generating device including: a housing including a first air port at a bottom end thereof; and a sealing base fitted to an inner wall of the bottom end of the housing, wherein a side of the sealing base which faces toward the bottom end of the housing is provided with a breath-detector pressure relief hole and an air guide groove, the breath-detector pressure relief hole is adjacent to the air guide groove and communicates with the air guide groove, and the air guide groove communicates with the first air port.
BRIEF DESCRIPTION OF THE DRAWINGS
In order that the technical solution of the embodiments of the present application may be more clearly described, references will now be made briefly to the accompanying drawings required for the description of the embodiments. It will be apparent that the accompanying drawings in the following description illustrate some embodiments of the present application, and that other drawings may be made to those skilled in the art without involving any inventive effort.
FIG. 1 is a schematic diagram of an internal structure of an aerosol generating device according to embodiments of the present application;
FIG. 2 is a bottom view of an aerosol generating device according to embodiments of the present application;
FIG. 3 is an exploded view of an aerosol generating device according to embodiments of the present application; and
FIG. 4 is a sectional view of an aerosol generating device according to embodiments of the present application;
LIST OF REFERENCE SIGNS
10, housing; 101, first air port; 102, second air port; 11, convex platform; 12, USB interface; 20, sealing base; 21, main air inlet; 22, breath-detector pressure relief hole; 23, air guide groove; 24, first pressure relief groove; 25, first negative pressure groove; 250, first groove section; 251, second groove section; 30, inner support; 31, battery; 32, PCB; and 33, atomizing device.
DETAILED DESCRIPTION
Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments are described for illustrative purposes only and are not intended to limit the present application.
Referring to FIGS. 1 to 4, and specifically to FIGS. 1 and 2, an aerosol generating device according to embodiments of the present application is shown. The structure and the working principle of the device will be described in detail with reference to the accompanying drawings. The aerosol generating device includes a housing 10 and a sealing base 20. A bottom end of the housing 10 is provided with a first air port 101. The sealing base 20 is disposed to fit an inner wall of the bottom end of the housing 10, and a side of the sealing base 20 which faces towards the bottom end of the housing 10 is provided with a breath-detector pressure relief hole 22 and an air guide groove 23. The breath-detector pressure relief hole 22 is adjacent to the air guide groove 23 and communicates with the air guide groove 23. The air guide groove 23 communicates with the first air port 101.
In the present embodiments, referring to FIG. 3 and FIG. 4, the sealing base 20 is provided at a bottommost end of the housing 10, and has a shape matched with an inner shape of the bottom end of the housing 10. A side of the sealing base 20 is fitted to an inner wall of the bottom end of the housing 10; and the other side of the sealing base 20 is mounted on an inner support 30 inside the housing 10. The inner support 30 is a frame for a partial inner assembly inside the housing 10 and is used to support the mounting of the inner assembly. A plurality of assemblies of an aerosol generating device, such as a Printed Circuit Board (PCB) board 32, a battery 31, and a breath detector, are mounted in the inner support 30. The sealing base 20 is mounted on a side of the inner support 30 which faces towards the bottom end of the housing 10, and is positioned between the inner wall of the bottom end of the housing 10 and the inner support 30. The bottom end of the housing 10 is spaced apart from the inner support 30 and an assembly above the inner support 30. The bottom end of the housing 10 is sealed, and the sealing base 20 is generally made of a good sealing material, such as silica gel. The external airflow from the bottom end of the housing 10 must firstly pass through the sealing base 20 to reach the inner support 30 and the assembly above the inner support 30.
In the present embodiments, the first air port 101 is an opening or a through hole in the bottom end of the housing 10, and the outside of the housing 10 communicates with the inside of the housing 10. At the time of suction, an airflow may flow from the first air port 101 into the inside of the housing 10. The air guide groove 23 is of a groove structure provided on the side of the sealing base 20 which faces towards the bottom end of the housing 10, and has a certain depth and an arbitrary shape. The air guide groove 23 may be designed according to actual requirements. For example, the air guide groove 23 may be provided to be a groove structure in the form of an annular air guide groove, a circular air guide groove, a strip-shaped air guide groove, or the like. The air guide groove 23 communicates with the first air port 101 at the bottom end of the housing 10. The air guide groove 23 may be positioned below the first air port 101, and may be exposed in the first air port 101. The air guide groove 23 and the first air port 101 may be staggered in the vertical direction, as long as the air guide groove 23 and the first air port 101 may maintain in communication with each other.
In the present embodiments, the breath-detector pressure relief hole 22 is provided on the sealing base 20, and in particular, is a through hole in the sealing base 20. The breath-detector pressure relief hole 22 is located adjacent to the air guide groove 23 and is in communication with the air guide groove 23. The breath-detector pressure relief hole 22 serves as a passage for the breath detector to release the negative pressure, which extends through both the inner and outer sides of the sealing base 20. The breath detector for controlling the atomization of the atomizing device 33 is provided at the inner side of the sealing base 20, and the negative pressure generated by suction is discharged through the breath-detector pressure relief hole 22. The breath-detector pressure relief hole 22 is covered in the axial direction of the breath-detector pressure relief hole by the inner wall of the bottom end of the housing 10, so that moisture or dust outside the housing 10 may be prevented from directly entering the breath-detector pressure relief hole 22 to damage the breath detector. During the suction, the negative pressure generated by the breath detector is released through an air path that is in order of the breath-detector pressure relief hole 22, the air guide groove 23, and the first air port 101.
By implementing the present embodiments, the breath-detector pressure relief hole 22 indirectly communicates with the outside of the housing 10 through the air guide groove 23, and the external air may enter the breath-detector pressure relief hole 22 only through the air guide groove 23. In this way, the direct contact between the breath-detector pressure relief hole 22 and the outside atmosphere is effectively avoided, thereby preventing the self-starting of the breath detector caused by the influence of the change of the external airflow on the breath detector, and thus improving the reliability of the actual usage.
In embodiments, referring to FIG. 1, the sealing base 20 is provided with a first negative pressure groove 25 between the breath-detector pressure relief hole 22 and the air guide groove 23. Two ends of the first negative pressure groove 25 communicate with the breath-detector pressure relief hole 22 and the air guide groove 23, respectively. More specifically, the first negative pressure groove 25 is a groove provided in the side of the sealing base 20 which faces toward the bottom end of the housing 10, and is located between the breath-detector pressure relief hole 22 and the air guide groove 23. One end of the first negative pressure groove 25 communicates with the air guide groove 23, and the other end of the first negative pressure groove 25 communicate with the breath-detector pressure relief hole 22. The first negative pressure groove 25 is covered by the inner wall of the bottom end of the housing 10. Thus, a channel is formed in the sealing base 20 under the covering of the inner wall of the bottom end of the housing 10. The first negative pressure groove 25 may have an arbitrary shape, or may be of a groove structure with a strip shape, an L shape, an S shape, a U shape, or other irregular shape. The distance range between the walls of two sides of the first negative pressure groove 25 is 0.2 mm-0.9 mm. In this range, it is ensured that the negative pressure of the breath-detector pressure relief hole 22 is in a proper state. It should be noted that the distance range of 0.2 mm-0.9 mm is only a reference value. There may be a small deviation in the width value in the actual design. At the time of suction, after the airflow flows into the air guide groove 23 through the first air port 101 at the bottom end of the housing 10, the airflow flows into the breath-detector pressure relief hole 22 through the first negative pressure groove 25, so that the flow distance of the airflow from the outside of the housing 10 to the breath-detector pressure relief hole 22 is prolonged, thereby effectively avoiding the phenomenon of self-starting of the breath detector caused by the influence of the external airflow on the breath detector.
Further, referring to FIG. 1, the first negative pressure groove 25 includes a first groove section 250 and a second groove section 251. The first groove section 250 and the second groove section 251 are in communication with the air guide groove 23 and the breath-detector pressure relief hole 22, respectively. The first groove section 250 is connected to the second groove section 251. Specifically, the first groove section 250 is a partial groove that communicates with the air guide groove 23, and the second groove section 251 is another partial groove that communicates with the breath-detector pressure relief hole 22. The two partial grooves are vertically connected and communicate with each other. After the airflow flows into the air guide groove 23 via the first air port 101, the airflow may follow into the breath-detector pressure relief hole 22 through the first groove section 250 and then through the second groove section 251, so that an L-shaped air intake mode is formed. In this way, the incoming airflows may be effectively buffered, thereby further preventing the change of the external airflow from influencing the breath-detector to self-start the breath detector.
In embodiments, referring to FIGS. 1 and 2, the aerosol generating device further includes a universal serial bus (USB) interface 12 inserted through the sealing base 20 and exposed below the first air port 101. The air guide groove 23 is disposed around an periphery of the USB interface 12. Specifically, the USB interface 12 is fixed to the PCB 32 inside the housing 10. The USB interface 12 is used to charge or debug the device. The USB interface 12 is exposed directly below the first air port 101 through the opening reserved on the sealing base 20. The air guide groove 23 is provided around the periphery of the opening reserved on the sealing base 20 for the USB interface 12. The air guide groove 23 is provided as an arc-shaped air guide groove to surround a part of the periphery of the opening, or may be designed as an annular air guide groove to surround the entire periphery of the opening. The first air port 101 serves as both an opening for USB plug-in operation and an opening for communication of both the breath-detector pressure relief hole 22 and the air guide groove 23 with the atmosphere outside the housing 10, thereby effectively saving the design space at the bottom of the housing 10.
In embodiments, referring to FIGS. 1 and 2, the sealing base 20 is further provided with a main air inlet 21. The bottom end of the housing 10 is further provided with a second air port 102, and the main air inlet 21 communicates with the second air port 102 and the air guide groove 23. Specifically, the first air port 101 is an opening or a through-hole provided at the bottom end of the housing 10, and communicates the outside of the housing 10 with the inside of the housing 10. When suction is performed, the airflow may flow from the second air port 102 into the inside of the housing 10. The main air inlet 21 is a through-hole provided in the sealing base 20, and extended through both the inside and outside sides of the sealing base 20. The outer side of the sealing base 20 communicates with the second air port 102 and is exposed to the second air port 102. The inner side of the sealing base 20 communicates with the air intake passage of the atomizing device 33 at the top of the housing 10 and the air passage at the inner side of the breath detector. When suction is performed, the airflow enters into the main air inlet 21 through the second air port 102. After the airflow enters into the inner side of the main air inlet 21 through the main air inlet 21, a part of the airflow enters the atomizing device 33 at the top of the housing 10 to provide a gas condition for the atomization reaction, and another part of the airflow enters the air passage of the breath detector. So, the breath detector is activated by sensing changes in the airflow in the air passage of the breath detector to effect atomization actuation. The main air inlet 21 is in communication with the air guide groove 23 at the same time. When suction is performed, a part of the airflow entering the air guide groove 23 from the first air port 101 also flows into the main air inlet 21 from the air guide groove 23. After the suction is stopped, since the breath-detector pressure relief hole 22 still has a certain negative pressure, the main air inlet 21 may release a part of the air pressure to the atmosphere, thereby increasing the releasing speed of the negative pressure of the breath detector.
Further, referring to FIG. 1, the sealing base 20 is provided with a first pressure relief groove 24 between the main air inlet 21 and the air guide groove 23. Two ends of the first pressure relief groove 24 communicate with the main air inlet 21 and the air guide groove 23, respectively. Specifically, the first pressure relief groove 24 is a groove provided in the side of the sealing base 20 which faces toward the bottom end of the housing 10, and is located between the main air inlet 21 and the air guide groove 23. One end of the first pressure relief groove 24 communicates with the main air inlet 21, and the other end of the first pressure relief groove 24 communicates with the air guide groove 23. The first pressure relief groove 24 is covered by the inner wall of the bottom end of the housing 10. So, a passage is formed in the sealing base 20 under the covering of the inner wall of the bottom end of the housing 10. The first pressure relief groove 24 may be arbitrarily shaped or may be of a straight groove structure. The pressure relief resistance is relatively small. The range of the air intake area of the first pressure relief groove 24 is 0.15-0.2 mm2. This range of the air intake area ensures that the time required for the complete pressure relief is minimized, and the flow distribution is in an equilibrium state. It should be noted that the range of the air intake area of 0.15-0.2 mm2 is only a reference value. Minor deviations may occur in actual design.
In embodiments, the air guide groove 23 is disposed adjacent to the breath-detector pressure relief hole 22, and the air guide groove 23 is totally staggered from the first air port 101 in the vertical direction. The first air port 101 is disposed in a sealed state. The housing 10 communicates the sealing base 20, the second air port 102, the main air inlet 21, the first pressure relief groove 24, the air guide groove 23, the first negative pressure groove 25, and the breath-detector pressure relief hole 22 in sequence. Under the covering of the inner wall of the bottom end of the housing 10, an independent airflow channel is formed through which the negative pressure generated by the breath detector is released to the atmosphere. Multiple barriers are formed between the second air port 102 and the breath-detector pressure relief hole 22. So, the interference of external factors such as water vapor and dust to the breath detector may be avoided to the maximum extent to damage the breath detector.
In embodiments, referring to FIG. 1, the sealing base 20 is provided with a convex platform 11 protruding toward the bottom end of the housing 10. The convex platform 11 is higher than the periphery of the sealing base 20 and abutted against the bottom end of the housing 10. The main air inlet 21, the air guide groove 23 and the breath-detector pressure relief hole 22 are all provided on the convex platform 11. Specifically, the sealing base 20 is in the shape of a central bulge. The convex platform 11 is a platform structure of the sealing base 20, which is protruded toward the bottom end of the housing 10. The convex platform 11 is higher than the periphery of the sealing base 20 by a certain distance. The main air inlet 21, the breath-detector pressure relief hole 22 and the air guide groove 23 are all provided on the convex platform 11. The inner wall of the bottom end of the housing 10 is shaped to match with the convex platform 11, and the convex platform 11 abuts against the inner wall of the bottom end of the housing 10, which represents the tightly fit. So, the sealing base 20 and the bottom of the housing 10 are kept more airtight.
Some embodiments of the present application have been described in detail above. The description of the above embodiments merely aims to help to understand the present application. Many modifications or equivalent substitutions with respect to the embodiments may occur to those skilled in the art based on the disclosure of the present application. Thus, such modifications or equivalent substitutions shall fall within the scope of the present application as defined by the appended claims.
Patent Application
20250049135
