Atomizer and electronic atomization device

Abstract

The application relates to an atomizer and an electronic atomization device. The atomizer comprises a liquid storage cavity and a ventilation channel connecting the liquid storage cavity with the outside. The ventilation channel comprises an outlet section close to the liquid storage cavity, an inlet section far from the liquid storage cavity, and a buffer section connecting the inlet section and the outlet section. The buffer section comprises a bottom channel and a buffer cavity arranged from inside to outside along the depth direction of the buffer section, and the buffer cavity protrudes from the outlet section in the depth direction. The buffer cavity can store air bubbles, and when the outside air pushes the liquid in the ventilation channel to flow to the liquid storage cavity, the air bubbles in the buffer cavity can be pressed into the liquid storage cavity by the liquid entering the buffer cavity before the outside air, so as to balance the pressure in the liquid storage cavity more quickly. In addition, the cross-section mutation of the buffer cavity can cause the flow rate and pressure to be reduced, prevent too much and too fast air from entering the liquid storage cavity and causing the pressure in the liquid storage cavity to be too large, and avoid liquid leakage caused by the high pressure in the liquid storage cavity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of atomization, in particular to an atomizer and an electronic atomization device. BACKGROUND

[0002] The electronic atomization device generally comprises an atomizer and a power supply device. The power supply device is used to supply power to the atomizer. The atomizer comprises a liquid storage cavity and an atomization assembly. The liquid storage cavity is used to store a liquid substrate, and the atomization assembly is used to heat and atomize the liquid substrate after being powered on to generate aerosol for inhalation.

[0003] In order to balance the pressure in the liquid storage cavity, the atomizer is generally provided with an air exchange channel. A common problem with existing atomizers is that air exchange is slow after the air exchange channel is completely filled with the liquid substrate; and a large amount of air enters the liquid storage cavity at the moment when the air exchange channel is filled with air, resulting in excessively high pressure in the liquid storage cavity and more likely to cause liquid leakage. SUMMARY

[0004] The technical problem to be solved by the present application is to provide an improved atomizer and an electronic atomization device with the atomizer to solve the above-mentioned defects of the prior art, which can accelerate the air exchange speed of the liquid storage cavity and avoid liquid leakage caused by excessively high pressure in the liquid storage cavity due to excessive air entering during air exchange.

[0005] The technical solution adopted by the present application to solve the technical problem is to construct an atomizer comprising a liquid storage cavity and an air exchange channel connecting the liquid storage cavity with the outside, wherein the air exchange channel comprises an outlet section close to the liquid storage cavity, an inlet section away from the liquid storage cavity, and a buffer section connecting the inlet section and the outlet section,

[0006] The buffer section comprises a bottom channel and a buffer cavity arranged from inside to outside along the depth direction thereof, and the buffer cavity protrudes from the outlet section in the depth direction.

[0007] In some embodiments, the cross-sectional area of the bottom channel is the same as that of the outlet section.

[0008] In some embodiments, the depth of the buffer section is equal to the depth of the inlet section and greater than the depth of the outlet section.

[0009] In some embodiments, the bottom surfaces of the inlet section, the buffer section, and the outlet section are located on the same plane or curved surface.

[0010] In some embodiments, the cross-sectional area of the buffer cavity is greater than or equal to 1.5 times the cross-sectional area of the outlet section.

[0011] In some embodiments, the width of the buffer cavity is greater than the width of the inlet section and / or the outlet section and / or the bottom channel.

[0012] In some embodiments, the equivalent diameter of the inlet section is less than 2mm.

[0013] In some embodiments, the cross section of the inlet section near one end of the liquid storage cavity is completely covered by the cross section of the buffer section away from the one end of the liquid storage cavity.

[0014] In some embodiments, the cross section of the buffer cavity near one end of the liquid storage cavity does not coincide with the cross section of the outlet section away from the one end of the liquid storage cavity.

[0015] In some embodiments, the ventilation channel is a straight channel.

[0016] In some embodiments, the cross sectional area of each of the inlet section, the bottom channel, the buffer cavity and the outlet section remains unchanged along the length direction thereof.

[0017] In some embodiments, the atomizer comprises a housing, a mounting seat at least partially accommodated in the housing, and an atomizing core at least partially accommodated in the mounting seat,

[0018] The mounting seat and the atomizing core cooperatively form an atomizing cavity,

[0019] The ventilation channel is formed between the housing and the mounting seat, and / or in the mounting seat.

[0020] In some embodiments, an air inlet channel is formed in the mounting seat and communicates with the external atmosphere, and the inlet section communicates with the atomizing cavity or the air inlet channel or the external atmosphere.

[0021] In some embodiments, the mounting seat comprises a heating seat, and the outer surface of the heating seat is recessed to form a first groove, a second groove and a third groove in sequence, the bottom surface of the first groove forms the bottom surface of the inlet section, the bottom surface of the second groove forms the bottom surface of the buffer section, and the bottom surface of the third groove forms the bottom surface of the outlet section.

[0022] In some embodiments, the mounting seat further comprises a sealing sleeve sleeved on the heating seat, and the sealing sleeve is formed with a gap exposing the second groove, and the gap is covered by the inner wall surface of the housing to form the buffer cavity.

[0023] The present application also provides an electronic atomization device comprising the above-mentioned atomizer and a control circuit electrically connected with the atomizer.

[0024] The present application has at least the following advantages: the buffer cavity protrudes from the outlet section in the depth direction, so that the liquid in the buffer cavity is not discharged when the liquid in the storage cavity overflows; when the outside air pushes the liquid in the air exchange channel to flow in the direction of the storage cavity, the air bubbles in the buffer cavity are pressed by the liquid entering the buffer cavity before the outside air, so that the air bubbles enter the storage cavity through the outlet section, thereby balancing the pressure in the storage cavity faster and accelerating the air exchange speed; in addition, the cross-section of the buffer cavity is suddenly changed, which can reduce the flow rate and pressure, thereby preventing too much air from entering the storage cavity too quickly and causing the pressure in the storage cavity to be too high, and avoiding the leakage caused by the high pressure in the storage cavity. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be further described below with reference to the accompanying drawings and examples, in which:

[0026] Figure 1 is a schematic diagram of the electronic atomization device in some embodiments of the present application;

[0027] Figure 2 is Figure 1 is a schematic diagram of the exploded structure of the electronic atomization device shown in FIG. 1;

[0028] Figure 3 is Figure 2 is a schematic diagram of the J-J longitudinal section of the atomizer in FIG. 1;

[0029] Figure 4 is Figure 2 is a schematic diagram of the K-K longitudinal section of the atomizer in FIG. 1;

[0030] Figure 5 is Figure 4 is a schematic diagram of the enlarged structure at M in FIG. 1;

[0031] Figure 6 is Figure 3 is a schematic diagram of the three-dimensional structure of the atomization assembly in FIG. 1;

[0032] Figure 7 is Figure 6 is a schematic diagram of the exploded structure of the atomization assembly shown in FIG. 1;

[0033] Figure 8-a is Figure 4 is a schematic diagram of the three-dimensional structure of the air exchange channel in FIG. 1;

[0034] Figure 8-b is Figure 8-a is a front view of the air exchange channel shown in FIG. 1;

[0035] Figure 8-c is Figure 8-a is a side view of the air exchange channel shown in FIG. 1;

[0036] Figure 9 is Figure 8-aA schematic diagram of the ventilation process after liquid accumulation in the ventilation channel is shown.

[0037] Figure 10 Is adopted Figure 8-a The diagram shows the pressure change in the liquid storage chamber during the ventilation channel as a function of suction time.

[0038] Figure 11 Is adopted Figure 8-a The diagram shows the pressure change in the storage chamber during the full suction process in the ventilation channel shown.

[0039] Figure 12 This is a three-dimensional structural diagram of the ventilation channel in an embodiment of the prior art;

[0040] Figure 13 Is adopted Figure 12 The diagram shows the pressure change in the liquid storage chamber during the ventilation channel as a function of suction time. Detailed Implementation

[0041] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments are now described in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the invention. However, the invention can be practiced in many ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0042] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In the present application, unless specifically defined otherwise, the terms "mount", "connected", "connecting", "fixed", "unfixed", and the like are to be construed broadly, for example, can be fixed connection, can be detachable connection, or integral; can be mechanical connection, can be electrical connection; can be direct connection, can be indirect connection through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements, unless specifically defined otherwise. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature can be above the second feature, which can be directly above or obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height. The first feature can be below the second feature, which can be directly below or obliquely below the second feature, or only means that the first feature is lower than the second feature in horizontal height.

[0046] Figures 1-2 An electronic atomization device 1 in some embodiments of the present application is shown, which includes an atomizer 100 and a power supply device 200 connected with the atomizer 100. The power supply device 200 generally includes a battery for supplying power to the atomizer 100 and a control circuit for controlling the heating of the atomizer 100. The atomizer 100 is used to contain a liquid substrate and heat and atomize the liquid substrate to generate an aerosol after being powered on. The liquid substrate includes, but is not limited to, materials for medical, health, health, beauty purposes.

[0047] In some embodiments, the atomizer 100 and the power supply device 200 can be substantially elliptical cylindrical, and the two can be mechanically and electrically connected together in the axial direction. Further, the atomizer 100 and the power supply device 200 can be connected together in a detachable manner such as magnetic attraction connection, threaded connection, buckle connection, etc. It can be understood that in other embodiments, the atomizer 100 and the power supply device 200 can also be connected together in a non-detachable manner. In addition, the cross-sectional shape of the atomizer 100 and / or the power supply device 200 is not limited to being elliptical, but can also be circular, track-shaped, or rectangular, or other shapes.

[0048] As Figures 3-7As shown, the atomizer 100 can include a housing 10 and an atomization assembly 20 at least partially received in a lower portion of the housing 10. The housing 10 can have a liquid storage cavity 110 for receiving a liquid substrate and an air outlet passage 120 for outputting aerosol, which is isolated from the liquid storage cavity 110. The atomization assembly 20 can include a mounting base 30 and an atomization core 40 at least partially received in the mounting base 30. The atomization core 40 is in liquid communication with the liquid storage cavity 110 and in air communication with the air outlet passage 120, and is configured to heat and atomize the liquid substrate in the liquid storage cavity 110 to form aerosol after being powered, which is then output through the air outlet passage 120 for being inhaled by a user.

[0049] Specifically, the housing 10 can include a cylindrical shell 11 and an air passage tube 12 longitudinally arranged in the cylindrical shell 11. The air passage tube 12 can be integrally connected with a top wall of the cylindrical shell 11, and in some embodiments, the air passage tube 12 and the cylindrical shell 11 can be integrally formed by injection molding or the like. An outer wall surface of the air passage tube 12 and an inner wall surface of the cylindrical shell 11 define the liquid storage cavity 110. An inner wall surface of the air passage tube 12 defines the air outlet passage 120, and a central axis of the air outlet passage 120 can be parallel to or coincident with a central axis of the housing 10. The atomization assembly 20 is arranged at a lower end opening of the cylindrical shell 11 to seal the liquid storage cavity 110.

[0050] The atomization core 40 can include a liquid absorbing body 41 and a heating element 42 in contact with the liquid absorbing body 41. In some embodiments, the liquid absorbing body 41 can be made of porous ceramic, liquid absorbing cotton or other porous materials, so that a large number of micropores are formed in the interior of the liquid absorbing body 41 and have a certain porosity. Through the capillary action of the micropores, the liquid absorbing body 41 can absorb and store the liquid substrate. The liquid absorbing body 41 has an atomization surface 411 and a liquid absorbing surface 412, the liquid absorbing surface 412 is in communication with the liquid storage cavity 110, and the atomization surface 411 is in contact with the heating element 42. The liquid absorbing body 41 absorbs the liquid substrate from the liquid storage cavity 110 through the liquid absorbing surface 412 and conducts the liquid substrate to the atomization surface 411, and the heating element 42 heats and atomizes the liquid substrate absorbed by the liquid absorbing body 41 after being powered.

[0051] In the present embodiment, the liquid absorbing body 41 can be substantially rectangular plate-shaped and arranged in a vertical direction. The atomization surface 411 and the liquid absorbing surface 412 are both arranged in the vertical direction, which can be two surfaces of the liquid absorbing body 41 arranged opposite in the thickness direction. In other embodiments, the liquid absorbing body 41 is not limited to be rectangular plate-shaped, and can also be columnar, cylindrical or bowl-shaped or other shapes. In addition, the atomization surface 411 and / or the liquid absorbing surface 412 can also be arranged horizontally, or can also be arranged at an angle to the vertical direction or the horizontal direction.

[0052] In some embodiments, the atomizing core 40 can further include a liquid guide 43 and an insulating sleeve 44. The insulating sleeve 44 can be made of an insulating and elastic high-temperature-resistant material such as silica gel, and the liquid absorbing body 41 is clamped in the mounting seat 30 via the insulating sleeve 44. The insulating sleeve 44 can prevent liquid leakage and protect the liquid absorbing body 41 from being crushed during installation.

[0053] The liquid guide 43 is in contact with the liquid absorbing surface 412, and can quickly and uniformly conduct the liquid matrix from the liquid storage cavity 110 to the liquid absorbing surface 412. In some embodiments, the liquid guide 43 can be made of a porous material such as liquid guiding cotton or porous ceramic. The insulating sleeve 44 can be in the shape of a frame, and the four edges of the liquid absorbing surface 412 of the liquid absorbing body 41 can be clamped on the insulating sleeve 44 via the liquid guide 43. It can be understood that in other embodiments, the atomizing core 40 can also not include the liquid guide 43 and / or the insulating sleeve 44.

[0054] The mounting seat 30 is formed with a liquid inlet passage 36, an air inlet passage 310, and an atomizing cavity 320. The liquid inlet passage 36 connects the liquid absorbing surface 412 of the liquid absorbing body 41 with the liquid storage cavity 110, and the atomizing cavity 320 is connected with the air inlet passage 310 and the air outlet passage 120, respectively. The atomizing surface 411 is exposed in the atomizing cavity 320, and can define part of the boundary of the atomizing cavity 320. When the heating body 42 generates heat, the liquid matrix on the atomizing surface 411 and the liquid matrix infiltrated on the heating body 42 will absorb heat and be atomized to form an aerosol, which is discharged in the atomizing cavity 320. When a user inhales, the external air input from the air inlet passage 310 into the atomizing cavity 320 carries the aerosol and is output through the air outlet passage 120.

[0055] The shell 10 is further formed with an air exchange passage 50, which connects the liquid storage cavity 110 with the external atmosphere, and is used to balance the pressure in the liquid storage cavity 110 and solve the problem of unstable liquid inlet due to excessive negative pressure in the liquid storage cavity 110. In some embodiments, the air exchange passage 50 can be formed between the inner wall surface of the shell 10 and the outer wall surface of the mounting seat 30, and / or in the interior of the mounting seat 30.

[0056] One end of the ventilation passage 50 is in communication with the liquid storage cavity 110, and the other end is in communication with the atomization cavity 320 or the air inlet passage 310 and further in communication with the external atmosphere. The ventilation passage 50 can include an inlet section 51 in communication with the external atmosphere, an outlet section 53 in communication with the liquid storage cavity 110, and a buffer section 52 connecting the inlet section 51 and the outlet section 53. The top surface 524 of the buffer section 52 protrudes from the top surface 514 of the inlet section 51 and / or the top surface 534 of the outlet section 53. The buffer section 52 includes a bottom passage 521 and a buffer cavity 522 arranged from inside to outside along the depth direction thereof. The inlet section 51 and the outlet section 53 are in communication through the bottom passage 521. Here, the "depth direction" is perpendicular to the extension direction of the ventilation passage 50, and "from inside to outside" refers to the side close to the central axis of the atomizer 100 to the side close to the shell 10; the "bottom surface" and the "top surface" are oppositely arranged in the depth direction, and the "bottom surface" is the side close to the central axis of the atomizer 100.

[0057] The buffer cavity 522 is the part of the buffer section 52 protruding from the inlet section 51 and / or the outlet section 53 in the depth direction. The buffer cavity 522 can store air bubbles, and the air bubbles in the buffer cavity 522 can be squeezed by the liquid entering the buffer cavity 522 before the external air, so as to enter the liquid storage cavity 110 through the outlet section 53, thereby balancing the pressure in the liquid storage cavity 110 more quickly. In addition, the cross-sectional mutation of the buffer cavity 522 can cause a decrease in flow rate and pressure, thereby preventing excessive and rapid entry of air into the liquid storage cavity 110, resulting in excessive pressure in the liquid storage cavity 110, and avoiding excessive pressure in the liquid storage cavity 110 leading to liquid leakage.

[0058] The end of each section of the ventilation passage 50 close to the liquid storage cavity 110 is defined as the proximal end, and the end away from the liquid storage cavity 110 is defined as the distal end. The proximal end of the inlet section 51 is connected to the distal end of the buffer section 52, and the cross section of the proximal end of the inlet section 51 is completely covered by the cross section of the distal end of the buffer section 52, so that the liquid in the inlet section 51 can smoothly enter the buffer cavity 522 when flowing in the direction of the liquid storage cavity 110. The proximal end of the buffer section 52 is connected to the distal end of the outlet section 53, and the cross section of the proximal end of the buffer cavity 522 of the buffer section 52 does not coincide with the cross section of the distal end of the outlet section 53, so that when the liquid in the outlet section 53 flows in the direction of the inlet section 51, the liquid can flow in the bottom passage 521 of the buffer section 52 under the action of surface tension, avoiding entering the buffer cavity 522.

[0059] The cross-sectional area of the buffer section 52 is greater than that of the inlet section 51 and / or the outlet section 53. In some embodiments, the cross-sectional area of the bottom channel 521 can be the same as that of the inlet section 51 or the outlet section 53, the cross-sectional area of the buffer cavity 522 is greater than or equal to 1.5 times that of the inlet section 51 or the outlet section 53, and the cross-sectional area of the buffer section 52 is greater than 2.5 times that of the inlet section 51 and / or the outlet section 53. The equivalent diameter of the inlet section 51 can be less than 2 mm, so that it has a certain capillary force.

[0060] In some embodiments, the ventilation channel 50 can extend in the vertical direction, and the cross-sectional shape of the inlet section 51, the bottom channel 521, the buffer cavity 522, and the outlet section 53 can be rectangular or rectangular-like. The width of the buffer cavity 522 is greater than that of the inlet section 51 and / or the outlet section 53 and / or the bottom channel 521, so that the cross-sectional area of the buffer cavity 522 is larger. The bottom channel 521 is in communication with the outlet section 53 and has the same size (including length, width, depth, and cross-sectional area). It can be understood that in other embodiments, the cross-sectional shape of each section in the ventilation channel 50 is not limited to rectangular or rectangular-like, and can be designed to be any shape.

[0061] As shown in 8-a, 8-b, and 8-c, in the present embodiment, the inlet section 51, the bottom channel 521, the buffer cavity 522, and the outlet section 53 are straight channels with rectangular cross-sections, and the width, depth, and cross-sectional area of each of the inlet section 51, the bottom channel 521, the buffer cavity 522, and the outlet section 53 remain unchanged in the length direction. The bottom surface 513 of the inlet section 51, the bottom surface 523 of the buffer section 52, and the bottom surface 533 of the outlet section 53 are located on the same plane, the top surface 524 of the buffer section 52 is higher than the top surface 534 of the outlet section 53 and is flush with the top surface 514 of the inlet section 51, i.e., the depth of the buffer section 52 is the same as that of the inlet section 51 and greater than that of the outlet section 53. The width of the buffer cavity 522 is greater than that of the inlet section 51, the outlet section 53, and the bottom channel 521. The width and depth of the bottom channel 521 are equal to those of the outlet section 53.

[0062] In Figure 8-b and Figure 8-c , the dimensions a, b, and c are the width dimensions of the outlet section 53, the buffer cavity 522, and the inlet section 51, respectively, the dimensions d, e, and f are the length dimensions of the outlet section 53, the buffer section 52, and the inlet section 51, respectively, the dimension h is the depth dimension of the outlet section 53, and the dimension g is the depth dimension of the buffer cavity 522. Then, the depth of the bottom channel 521 = the depth of the outlet section 53 = h, the depth of the buffer section 52 = the depth of the bottom channel 521 + the depth of the buffer cavity 522 = h + g, and the depth of the inlet section 51 = the depth of the buffer section 52 = h + g.

[0063] Because the depths of the buffer section 52 and the outlet section 53 are different, and the buffer cavity 522 is arranged at a position higher than h, when the liquid in the liquid storage cavity 110 overflows, the air bubbles in the buffer cavity 522 will not be discharged, that is, the buffer cavity 522 can store air bubbles. Because the depths of the buffer section 52 and the inlet section 51 are the same, when the liquid in the inlet section 51 is pushed by external air to flow in the direction of the liquid storage cavity 110, the liquid will push the air bubbles in the buffer cavity 522 to move forward, which can accelerate the speed of air exchange.

[0064] It can be understood that in other embodiments, the structure of the air exchange channel 50 is not limited to the specific structure described above. For example, the air exchange channel 50 can also be a curved channel. For another example, the bottom surfaces of the inlet section 51, the buffer section 52, and the outlet section 53 can also be located on the same curved surface (for example, a circular arc surface).

[0065] Figure 9 The air exchange process after liquid accumulation in the air exchange channel 50 is shown, where the dark part is liquid and the blank part is air. Air exchange stage ①: Assuming that the air exchange channel 50 is filled with liquid, when the air exchange function is performed, the liquid in the air exchange channel 50 will be discharged under the action of pressure difference and enter the liquid storage cavity 110. When the liquid passes through the buffer cavity 522, the cross-sectional area changes, causing an additional pressure drop, which reduces the flow rate of the liquid. Air exchange stage ②: The liquid in the air exchange channel 50 is gradually completely discharged, and the air passing through the buffer cavity 522 also has the same pressure drop effect, thereby preventing the air flow rate from being too fast and causing too much air to enter the liquid storage cavity 110. Air exchange stage ③: After air exchange, the liquid in the liquid storage cavity 110 will enter the air exchange channel 50 under the action of gravity and capillary force. Due to the surface tension of the liquid itself, the liquid will flow at the bottom of the air exchange channel 50 and will not enter the buffer cavity 522 above the channel. When the liquid flows to the inlet section 51, the outlets on both sides of the buffer cavity 522 will form a liquid seal, and a stable buffer air bubble will be formed in the buffer cavity 522. Stage ④: In the subsequent air exchange process, because the buffer air bubble is closer to the liquid storage cavity 110 than the external air, when the liquid is pushed back to the inlet of the buffer section 52, because the depth of the inlet section 51 is equal to the depth of the buffer section 52, the liquid in the inlet section 51 will enter the buffer cavity 522 and the bottom channel 521 of the buffer section 52 at the same time. The buffer air bubble in the buffer cavity 522 will be squeezed by the liquid entering the buffer cavity 522, so that the buffer air bubble enters the liquid storage cavity 110 in a gas-liquid mixed form before the external air. Because the flow resistance of the gas in the channel is much smaller than that of the liquid, the pressure balance in the liquid storage cavity 110 can be established more quickly.

[0066] Figure 12 An air exchange channel 50a in an embodiment of the prior art is shown, which is not provided with a buffer cavity 522, that is, the air exchange channel 50a only includes an inlet section 51a, a bottom channel 521a, and an outlet section 53a.

[0067] Figure 10 , Figure 13 The pressure changes in the liquid storage chamber 110 with the suction time are shown when ventilation channel 50 and ventilation channel 50a are used, respectively. Figure 11 The diagram shows the pressure changes within the liquid storage chamber 110 during the full suction process when using the ventilation channel 50. In the ventilation channel 50, a = c = 0.3 mm, h = 0.4 mm, b = 0.7 mm, d = 1.8 mm, e = 2.9 mm, f = 5.3 mm, and g = 0.7 mm. For comparison, in the ventilation channel 50a, the length, width, and depth dimensions of the inlet section 51a, bottom channel 521a, and outlet section 53a are the same as those of the inlet section 51, bottom channel 521, and outlet section 53a in the ventilation channel 50.

[0068] exist Figure 13 In the diagram, the dashed box represents the drainage process. During the ventilation process, due to the accumulation of liquid in the ventilation channel 50a, the flow resistance is high, requiring more than 1 second after the suction is completed before ventilation can occur. This results in an excessively low negative pressure in the liquid storage chamber 110 before ventilation, affecting the drainage. The ventilation channel 50 can achieve ventilation during or after suction, ensuring a high negative pressure in the liquid storage chamber 110, thus achieving good drainage.

[0069] After ventilation, because ventilation channel 50a cannot buffer the airflow, the pressure in the liquid storage chamber 110 will return to around -100 Pa or even exceed 0 Pa, posing a high risk of leakage. However, in ventilation channel 50, the residual air in buffer chamber 522, due to the pressure difference and the difference in gas-liquid flow resistance, enters the liquid storage chamber 110 before the outside air to balance the negative pressure, and slows down the airflow within buffer chamber 522. Therefore, excessively fast airflow will not rush into the liquid storage chamber 110, preventing excessive pressure in the liquid storage chamber 110 and thus avoiding leakage. Figure 11 It can be seen that the ventilation channel 50 can ensure that the pressure in the liquid storage chamber 110 is at a low level after ventilation during the entire suction process, thus preventing leakage during suction.

[0070] For example Figures 3-7 As shown, the ventilation channel 50 can be formed by a recess in the outer surface of the mounting base 30. In this embodiment, there is only one ventilation channel 50. In other embodiments, there may be multiple ventilation channels 50.

[0071] The mounting seat 30 can include a base 31, a heating seat 32 matched with the base 31, and a sealing sleeve 33 sleeved on the heating seat 32. The base 31 is arranged at the lower end opening of the shell 10 to block the opening. An air inlet channel 310 can be formed on the base 31 in the longitudinal direction, and the central axis of the air inlet channel 310 can be parallel to or coincide with the central axis of the air outlet channel 120. The heating seat 32 is matched with the base 31 to accommodate and fix the atomizing core 40. The sealing sleeve 33 can be made of elastic materials such as silica gel, and the sealing sleeve 33 can be sealed between the inner wall surface of the shell 10 and the outer wall surface of the heating seat 32 to prevent the liquid matrix in the liquid storage cavity 110 from leaking.

[0072] The outer surface of the heating seat 32 includes a first surface 321 and a second surface 322 arranged opposite in the transverse direction. The first surface 321 is concave to form an air exchange groove 35, and the upper end of the air exchange groove 35 is in communication with the liquid storage cavity 110, and the lower end is in communication with the atomizing cavity 320. When the atomizing assembly 20 is installed in the shell 10, the shell 10 covers and seals the opening of the air exchange groove 35, so that the air exchange groove 35 forms the air exchange channel 50. The second surface 322 is concave to accommodate a receiving cavity 3220, and the atomizing core 40 can be installed into the receiving cavity 3220 through the opening of the receiving cavity 3220.

[0073] The heating seat 32 can include a main body part 323 at the lower part and a sleeve part 324 at the upper part. Correspondingly, the first surface 321 includes a lower surface 3213 on the main body part 323 and an upper surface 3214 on the sleeve part 324. The lower surface 3213 is higher than the upper surface 3214, that is, the lower surface 3213 is farther away from the central axis of the heating seat 32 than the upper surface 3214.

[0074] The air exchange groove 35 extends linearly downward from the upper end of the sleeve part 324 to the lower end of the main body part 323, and it can include a first groove 351 formed on the main body part 323 and a second groove 352 and a third groove 353 formed on the sleeve part 324. The first groove 351, the second groove 352, and the third groove 353 are sequentially communicated from bottom to top. The first groove 351 is formed by the lower surface 3213 being concave inward by a certain depth, and the top surface of the first groove 351 is open and flush with the lower surface 3213. The second groove 352 and the third groove 353 are both formed by the upper surface 3214 being concave inward by a certain depth, and the top surfaces of the second groove 352 and the third groove 353 are open and flush with the upper surface 3214. The bottom surface 3511 of the first groove 351, the bottom surface 3521 of the second groove 352, and the bottom surface 3531 of the third groove 353 are on the same plane, so that the depth of the second groove 352 is equal to the depth of the third groove 353, and less than the depth of the first groove 351.

[0075] The sealing sleeve 33 is sleeved on the sleeve joint 324, and can include a top wall 332 and an annular side wall 331 extending downward from the periphery of the top wall 332. The top wall 332 is provided with an air exchange opening 333, and the upper end of the third channel 353 is connected with the liquid storage cavity 110 through the air exchange opening 333. The annular side wall 331 is sealingly arranged between the inner wall surface of the shell 10 and the outer wall surface of the sleeve joint 324, and can cover the third channel 353. The third channel 353 is covered by the annular side wall 331 to form the outlet section 53 of the air exchange passage 50, and part of the inner wall surface of the annular side wall 331 forms the top surface 534 of the outlet section 53, and the bottom surface 3531 of the third channel 353 forms the bottom surface 533 of the outlet section 53.

[0076] The annular side wall 331 is provided with an opening 330 exposing the second channel 352. When the atomization assembly 20 is installed in the shell 10, the opening of the opening 330 is covered and sealed by the shell 10, so that the opening 330 forms the buffer cavity 522 of the buffer section 52, the second channel 352 forms the bottom passage 521 of the buffer section 52, the bottom surface 3521 of the second channel 352 forms the bottom surface 523 of the buffer section 52, and part of the inner wall surface of the shell 10 forms the top surface 524 of the buffer section 52. At the same time, the opening of the first channel 351 is also covered and sealed by the shell 10, so as to form the inlet section 51 of the air exchange passage 50, the bottom surface 3511 of the first channel 351 forms the bottom surface 513 of the inlet section 51, and the inner wall surface of the shell 10 forms the top surface 514 of the inlet section 51.

[0077] It can be understood that in other embodiments, the forming structure of the air exchange passage 50 is not limited to the specific embodiments described above. For example, part or all of the air exchange passage 50 can also be recessed by the inner wall surface of the shell 10, or can also be recessed by the inner wall surface of the shell 10 and the outer wall surface of the mounting seat 30. For another example, the air exchange groove 35 can also be recessed by the outer surface of the base 31.

[0078] In some embodiments, the atomization assembly 20 can further include two electrode assemblies 34 arranged on the base 31, and the two electrode assemblies 34 are respectively electrically connected with the two poles of the heating body 42. Each electrode assembly 34 can include an electrode column and / or an electrode connecting piece. One end of the electrode assembly 34 can abut against and conduct with the heating body 42, and the other end of the electrode assembly 34 is at least partially exposed to the bottom surface of the base 31, so as to be conveniently connected and conducted with the power supply device 200.

[0079] It can be understood that the above technical features can be used in any combination without limitation.

[0080] The above examples only express the specific implementation of the present application, which is described in more detail and in detail, but cannot be understood as a limitation on the scope of the patent of the present application; it should be pointed out that for ordinary skilled in the art, the above technical features can be freely combined without departing from the concept of the present application, and several modifications and improvements can be made, which belong to the protection scope of the present application; therefore, any equivalent transformation and modification within the scope of the claims of the present application shall belong to the scope of the claims of the present application.

Claims

1. An atomizer characterized by, The air exchange channel (50) includes an outlet section (53) close to the liquid storage cavity (110), an inlet section (51) away from the liquid storage cavity (110), and a buffer section (52) connecting the inlet section (51) and the outlet section (53), The buffer section (52) includes a bottom channel (521) and a buffer cavity (522) arranged from inside to outside along the depth direction of the buffer section (52), and the buffer cavity (522) protrudes from the outlet section (53) in the depth direction, The cross-sectional area of the buffer section (52) is greater than the cross-sectional area of the inlet section (51) and the outlet section (53).

2. The atomizer of claim 1, wherein, The cross-sectional area of the bottom channel (521) is the same as the cross-sectional area of the outlet section (53).

3. The atomizer of claim 1, wherein, The depth of the buffer section (52) is equal to the depth of the inlet section (51) and greater than the depth of the outlet section (53).

4. The atomizer of claim 1, wherein, The bottom surface (513) of the inlet section (51), the bottom surface (523) of the buffer section (52), and the bottom surface (533) of the outlet section (53) are located on the same plane or curved surface.

5. The atomizer of claim 1, wherein, The cross-sectional area of the buffer cavity (522) is greater than or equal to 1.5 times the cross-sectional area of the outlet section (53).

6. The atomizer of claim 1, wherein, The width of the buffer cavity (522) is greater than the width of the inlet section (51) and / or the outlet section (53) and / or the bottom channel (521).

7. The atomizer of claim 1, wherein, The equivalent diameter of the inlet section (51) is less than 2 mm.

8. The atomizer of claim 1, wherein, The cross-section of one end of the inlet section (51) close to the liquid storage cavity (110) is completely covered by the cross-section of one end of the buffer section (52) away from the liquid storage cavity (110).

9. The atomizer of claim 1, wherein, The cross-section of one end of the buffer cavity (522) close to the liquid storage cavity (110) does not coincide with the cross-section of one end of the outlet section (53) away from the liquid storage cavity (110).

10. The atomizer of claim 1, wherein, The air exchange channel (50) is a straight channel.

11. The atomizer of claim 1, wherein, The cross-sectional area of each of the inlet section (51), the bottom channel (521), the buffer cavity (522), and the outlet section (53) remains unchanged in the length direction.

12. The atomizer of any of claims 1-11, wherein, The atomizer (100) includes a housing (10), a mounting seat (30) at least partially accommodated in the housing (10), and an atomizing core (40) at least partially accommodated in the mounting seat (30), The mounting seat (30) and the atomizing core (40) cooperate to form an atomizing cavity (320), The air exchange channel (50) is formed between the housing (10) and the mounting seat (30), and / or formed in the mounting seat (30).

13. The atomizer of claim 12, wherein, An air inlet channel (310) is formed in the mounting seat (30) and communicates with the outside atmosphere, and the inlet section (51) communicates with the atomizing cavity (320), the air inlet channel (310), or the outside atmosphere.

14. The atomizer of claim 12, wherein, The mounting base (30) comprises a heat generating base (32), an outer surface of the heat generating base (32) is concave and forms a first channel (351), a second channel (352) and a third channel (353) which are sequentially communicated, a bottom surface (3511) of the first channel (351) forms a bottom surface (513) of the inlet section (51), a bottom surface (3521) of the second channel (352) forms a bottom surface (523) of the buffer section (52), and a bottom surface (3531) of the third channel (353) forms a bottom surface (533) of the outlet section (53).

15. The atomizer of claim 14, wherein, The mounting base (30) further comprises a sealing sleeve (33) which is sleeved on the heat generating base (32), the sealing sleeve (33) is formed with a gap (330) which exposes the second channel (352), and the gap (330) is covered by an inner wall surface of the shell (10) to form the buffer cavity (522).

16. An electronic atomizing device, characterized by, The control circuit is electrically connected with the atomizer (100).

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