Atomizer and aerosol generating device

Abstract

This application provides an atomizer. The atomizer includes a housing assembly and an atomization base. At least part of the atomization base is arranged in the housing assembly, and an atomization cavity and a liquid inlet channel are formed in the atomization base. The atomization base further includes a separator. The separator extends along a liquid inlet direction of the liquid inlet channel. The separator separates the liquid inlet channel into a first channel and a second channel. One ends of the first channel and the second channel are both in communication with the liquid storage cavity, and other ends of the first channel and the second channel are both in communication with an atomization core. A flow cross-sectional area of the first channel in at least a partial region of the liquid inlet channel is different from a flow cross-sectional area of the second channel.

Description

TECHNICAL FIELD

[0001] This application relates to the field of atomizer technologies, and in particular, to an atomizer and an aerosol generating device.BACKGROUND

[0002] An aerosol generating device usually includes an atomizer and a power supply component electrically connected to the atomizer. The atomizer can atomize an aerosol generating substrate stored in a liquid storage cavity under the electric drive of the power supply component to form an aerosol for a user to use.

[0003] In the related art, when the aerosol generating device is inverted and normally used, a bubble may block a liquid inlet channel, resulting in poor liquid flow in the liquid inlet channel, and affecting user experience. Therefore, how to improve a situation of poor liquid inflow in the liquid inlet channel is an issue that cannot be ignored.SUMMARY

[0004] In view of this, this application is expected to provide an atomizer and an aerosol generating device, to improve a situation of poor liquid inflow in a liquid inlet channel, thereby improving user experience.

[0005] To achieve the foregoing purpose, a first aspect of embodiments of this application provides an atomizer. The atomizer includes: a housing assembly, where an interior of the housing assembly is provided with a liquid storage cavity, and the liquid storage cavity is configured to store an aerosol generating substrate; and an atomization base, where at least part of the atomization base is arranged in the housing assembly, and an atomization cavity and a liquid inlet channel are formed in the atomization base; and the atomization base further includes a separator, the separator extends along a liquid inlet direction of the liquid inlet channel, the separator separates the liquid inlet channel into a first channel and a second channel, one ends of the first channel and the second channel are both in communication with the liquid storage cavity, and other ends of the first channel and the second channel are both in communication with an atomization core; and a flow cross-sectional area of the first channel in at least a partial region of the liquid inlet channel is different from a flow cross-sectional area of the second channel.

[0006] In an implementation, the liquid inlet channel includes a first liquid inlet section extending along a height direction of the atomizer; and / or a second liquid inlet section extending along a horizontal direction of the atomizer.

[0007] In an implementation, the flow cross-sectional area of the at least a partial region of the first channel is different along the liquid inlet direction; and / or the flow cross-sectional area of the at least a partial region of the second channel is different along the liquid inlet direction.

[0008] In an implementation, the flow cross-sectional area of the at least a partial region of the first channel increases along the liquid inlet direction; and / or the flow cross-sectional area in the at least a partial region of the second channel decreases along the liquid inlet direction.

[0009] In an implementation, the central axis of the liquid inlet channel is arranged at an angle to at least a partial region of the separator.

[0010] In an implementation, the separator includes a first separation section and a second separation section that are distributed along the liquid inlet direction, the first separation section is arranged on an end of the second separation section away from the liquid storage cavity, and a flow cross-sectional area of the first channel at the first separation section is greater than a flow cross-sectional area of the second channel at the first separation section.

[0011] In an implementation, the first separation section and the second separation section are smoothly connected; and / or a flow cross-sectional area of the first channel at the second separation section is equal to a flow cross-sectional area of the second channel at the second separation section.

[0012] In an implementation, an end surface of the separator away from the liquid storage cavity is an inclined surface.

[0013] In an implementation, an end of the separator away from the liquid storage cavity is spaced apart from the wall surface of the liquid inlet channel, and the spacing distance is not less than 0.3 mm and not greater than 5 mm.

[0014] A second aspect of the embodiments of this application provides an aerosol generating device, including a power supply component and the atomizer of any one of the foregoing implementations. The power supply component is electrically connected to the atomizer.

[0015] The atomizer provided in the embodiment of this application separates, through a separator, a part of the liquid inlet channel into two channels with different flow cross-sectional areas. The first channel and the second channel have different flow cross-sectional areas, which may enable an aerosol generating substrate to produce a flow velocity difference during flow of the two channels. The flow velocity difference may cause a pressure in the two channels to be in an unbalanced state, pushing the aerosol generating substrate from a high-pressure region to a low-pressure region, driving movement of the aerosol generating substrate, and thus driving movement of the bubbles in the aerosol generating substrate, breaking a static balanced state of the bubbles, and preventing the bubbles from stopping movement after being in the balanced state in the liquid inlet channel, causing blockage of the liquid inlet channel, and resulting in poor liquid inflow in the liquid inlet channel. Based on the above, the structural design of the liquid inlet channel of the atomizer is beneficial to reduce a probability of bubbles blocking the liquid inlet channel, improve operating stability and reliability of the atomizer, and improve user experience.BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG. 1 is a schematic structural diagram of an atomizer according to an embodiment of this application. FIG. 2 is a schematic structural diagram of a base body according to an embodiment of this application. FIG. 3 is a schematic structural diagram of a base body according to an embodiment of this application. FIG. 4 is a schematic structural diagram of an atomization base according to an embodiment of this application. FIG. 5 is a schematic structural diagram of a liquid inlet channel according to an embodiment of this application. DESCRIPTIONS OF REFERENCE NUMERALS

[0017] 100. Atomizer; 10. Atomization base; 11. Base body; 111. Atomization cavity; 112. Liquid inlet channel; 1121. Opening; 1122. Liquid inlet cavity; 113. Separator; 1131. First separation section; 1132: Second separation section; 1133. Inclined surface; 114. First channel; 115. Second channel; 116. First liquid inlet section; 117. Second liquid inlet section; 12. Seal member; 20. Housing assembly; 21. Liquid storage cavity.DETAILED DESCRIPTION

[0018] It should be noted that in the case of no conflict, embodiments in this application and the technical features in the embodiments may be combined with each other, and the detailed description in a specific implementation should be understood as an explanation of the purpose of this application and should not be regarded as an improper limitation on this application.

[0019] Unless otherwise defined, meanings of all technical and scientific terms used herein are the same as those usually understood by a person skilled in the art. Terms used herein are merely used to describe the specific embodiments, and are not intended to limit this application. Terms "include", "have", and any variant thereof in this application are intended to cover a non-exclusive inclusion.

[0020] In the description of the embodiments of this application, the technical terms "first", "second", "third", and the like are merely used to distinguish between different objects, and should not be understood as indicating or implying relative importance or implying a number, specific order, or primary-secondary relationship of indicated technical features. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise explicitly and specifically defined.

[0021] The "embodiment" mentioned in this specification means that particular features, structures, or characteristics described with reference to the embodiments may be included in at least one embodiment of this application. The phrase appearing at various locations in this specification does not necessarily refer to a same embodiment, and is not an independent or alternative embodiment mutually exclusive of another embodiment. A person skilled in the art explicitly or implicitly understands that the embodiments described in the specification may be combined with other embodiments.

[0022] In the description of the embodiments of this application, the term "and / or" is merely an association relationship describing related objects, which means that three relationships may exist. For example, A and / or B may represent the following three cases: only A exists, both A and B exist, and only B exists. In addition, the character " / " in this specification generally indicates an "or" relationship between a preceding associated object and a succeeding associated object.

[0023] In the description of the embodiments of this specification, it should be understood that orientation or position relationships indicated by the technical terms such as "length", "width", "thickness", "on", "below", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "circumferential direction", "height direction", "first direction", and "second direction" are based on orientation or position relationships shown in the accompanying drawings, and are used only for ease and brevity of description of the embodiments of this application, rather than indicating or implying that the mentioned device or element needs to have a particular orientation or be constructed, operated, or used in a particular orientation. Therefore, such terms should not be construed as a limitation on the embodiments of this specification.

[0024] In the description of the embodiments of this specification, unless otherwise specified and defined explicitly, terms such as "mount", "connect", "connection", and "fix" shall be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; or may be a mechanical connection, or an electrical connection; or may be a direct connection, an indirect connection through an intermediary, or internal communication between two elements or interaction between two elements. A person of ordinary skill in the art may understand specific meanings of the foregoing terms in the embodiments of this application based on a specific situation.

[0025] In the description of the embodiments of this application, unless otherwise specified and defined explicitly, the technical term "contact" should be understood in a broad sense, and may be direct contact, or may be contact through an intermediate layer, may be contact with no substantial interaction force between the two that are in contact, or may be contact with interaction force between the two that are in contact.

[0026] This application provides an aerosol generating device. The device includes a power supply component and the atomizer of any one of embodiments of this application. The power supply component is electrically connected to the atomizer.

[0027] The aerosol generating device is configured to atomize an aerosol generating substrate to generate an aerosol for a user to use. The aerosol generating substrate includes, but is not limited to, a drug, a nicotine-containing material, a nicotine-free material, or the like. In the embodiment of the application, the aerosol generating substrate may be a liquid material with plants (such as tobacco) as main raw materials and corresponding aerosol forming agents and aroma materials added.

[0028] The power supply component is electrically connected to the atomizer. The power supply component is mainly configured to supply power to the atomizer and control an operation such as turning on or off the entire aerosol generating device.

[0029] A person skilled in the art should understand that a type of the aerosol generating device is not specifically limited in the embodiment of this application. For example, the aerosol generating device may be a medical atomization device, an air humidifier, an electronic cigarette, or the like that requires an atomizer.

[0030] This application provides an atomizer 100. Referring to FIG. 1 to FIG. 4, the atomizer 100 includes a housing assembly 20 and an atomization base 10. An interior of the housing assembly 20 is provided with a liquid storage cavity 21. The liquid storage cavity 21 is configured to store an aerosol generating substrate. At least part of the atomization base 10 is arranged in the housing assembly 20, and an atomization cavity 111 and a liquid inlet channel 112 are formed in the atomization base 10. The atomization base 10 further includes a separator 113. The separator 113 extends along a liquid inlet direction of the liquid inlet channel 112. The separator separates the liquid inlet channel 112 into a first channel 114 and a second channel 115. One ends of the first channel 114 and the second channel 115 are both in communication with the liquid storage cavity 21, and other ends of the first channel 114 and the second channel 115 are both in communication with an atomization core. A flow cross-sectional area of the first channel 114 in at least a partial region of the liquid inlet channel 112 is different from a flow cross-sectional area of the second channel 115.

[0031] The interior of the housing assembly 20 is provided with the liquid storage cavity 21, which may mean that the housing assembly 20 defines the liquid storage cavity 21, or the housing assembly 20 and the atomization base 10 jointly define the liquid storage cavity 21.

[0032] The housing assembly 20 is an external housing of the atomizer 100, and has an air outlet channel formed therein. At least part of the atomization base 10 is arranged in the housing assembly 20.

[0033] The air outlet channel may be located in a middle region of the housing assembly 20, or may be located on a side surface of the middle region of the housing assembly 20.

[0034] In some embodiments, a top portion of the atomization base 10 and an inner side wall of the housing assembly 20 define the liquid storage cavity 21 configured to store the aerosol generating substrate, and the liquid storage cavity 21 is arranged around the air outlet channel.

[0035] In some other embodiments, it may further mean that the liquid storage cavity 21 is formed inside the housing assembly 20.

[0036] The atomization base 10 has an atomization core, where the atomization core is a structure in the atomizer 100 that has an atomization function. The atomization core is at least partially arranged in the atomization base 10. The aerosol generating substrate generates an aerosol through the atomization core.

[0037] Exemplarily, the at least part of the atomization base 10 being arranged in the housing assembly 20 may mean that a partial structure of the atomization base 10 is arranged in the housing assembly 20, or may mean that an entire structure of the atomization base is arranged in the housing assembly 20.

[0038] Exemplarily, an air inlet channel is formed in the atomization base 10. The air inlet channel brings outside into communication with the atomization cavity 111.

[0039] Exemplarily, the atomization cavity 111 and the liquid inlet channel 112 are formed in the atomization base 10. The liquid inlet channel 112 brings the liquid storage cavity 21 into communication with the atomization cavity 111. The atomization cavity 111 is in communication with the air outlet channel. The aerosol generating substrate in the liquid storage cavity 21 enters the atomization core for atomization through the liquid inlet channel 112. The aerosol formed after atomization flows through the air outlet channel along with air flowing into the air inlet channel and is discharged to the outside through the air outlet for the user to use.

[0040] A specific structure of the atomization base 10 is not limited herein, which may be for example an integrally formed structure, or may be assembled by a plurality of parts and components.

[0041] The atomization cavity 111 is a space in the atomization base 10. The atomization cavity 111 is connected to the air outlet channel, and is a place where the aerosol generating substrate is atomized into fine particles. During the atomization, the atomization cavity 111 provides a necessary space, so that the aerosol generating substrate may be dispersed into tiny aerosol particles through the atomization core.

[0042] A specific structure of the atomization cavity 111 is determined based on an actual situation, which is not limited herein.

[0043] The liquid inlet direction refers to a direction in which the aerosol generating substrate flows, from a side of the liquid inlet channel 112 close to the liquid storage cavity 21 along an extension path of the liquid inlet channel to the atomization core, in the liquid inlet channel 112 when the atomizer 100 is in normal use.

[0044] The separator 113 is configured to separate a part of the liquid inlet channel 112 into different parts, and functions to adjust a structure and a function of the liquid inlet channel 112. The separator 113 extends along the liquid inlet direction, and separates the liquid inlet channel 112 into two channels extending along the liquid inlet direction. The first channel 114 is one of the channels formed after the separator 113 separates the liquid inlet channel 112. The second channel 115 is the other channel formed after the separator 113 separates the liquid inlet channel 112.

[0045] An arrangement form of the separator 113 is not limited herein, which may be for example a structure integrally formed with the atomization base 10, or may be a structure detachably arranged in the liquid inlet channel 112.

[0046] It may be understood that the liquid inlet channel 112 is separated into two channels. Compared with a single channel, when a bubble blocks one of the channels, the other channel may further be normal for liquid feeding. In an actual test, there is a very low probability that two channels are simultaneously blocked by the bubble. This has a better liquid flow effect than the single channel.

[0047] The first channel 114 and the second channel 115 are in communication with each other on a bottom portion of the liquid inlet channel 112. In other words, the first channel 114 and the second channel 115 both have a function of guiding the aerosol generating substrate in the liquid storage cavity 21 to the atomization core.

[0048] A specific form of separation into the first channel 114 and the second channel 115 by the separator 113 is not limited herein. The first channel 114 and the second channel 115 formed through separation by the separator 113 need to be in a cross section perpendicular to the liquid inlet direction. A flow cross-sectional area of at least a partial region of the first channel 114 is different from a flow cross-sectional area of the second channel 115.

[0049] It should be noted that the flow cross-sectional area specifically refers to a cross-sectional area of a channel perpendicular to a flow direction of a fluid (that is, the aerosol generating substrate) involved in the embodiment of this application during flow of the fluid in the channel. The first channel 114 is used as an example. The flow cross-sectional area of the first channel 114 refers to an area corresponding to a cross section of the first channel 114 perpendicular to the flow direction of the aerosol generating substrate when the aerosol generating substrate flows in the first channel 114.

[0050] Herein, the flow cross-sectional areas of the first channels 114 and the flow cross-sectional areas of the second channels 115 may be all different in all regions of the first channel 114 and the second channel 115. Alternatively, a flow cross-sectional area of a part of the first channel 114 is different from the flow cross-sectional area of the second channel 115, and a situation where the flow cross-sectional area of the part of the first channel 114 is the same as the flow cross-sectional area of the second channel 115.

[0051] A manner in which the flow cross-sectional area of the first channel 114 in the at least a partial region of the liquid inlet channel 112 is different from the flow cross-sectional area of the second channel 115 is not limited herein, which may be for example achieved by changing a shape of the liquid inlet channel 112 or changing a shape of the separator 113, or may be achieved by changing a position of the separator 113 in the liquid inlet channel 112.

[0052] Exemplarily, the liquid inlet channel 112 has an irregular shape. A separation plate separates the liquid inlet channel 112 into a first channel 114 and second channel 115 that are asymmetric. On a cross section perpendicular to a liquid inlet direction, the flow cross-sectional area of the first channel 114 in a partial region is different from the flow cross-sectional area of the second channel 115.

[0053] Exemplarily, the separation plate is an adjustable structure, which may be adjusted to a cross section perpendicular to the liquid inlet direction by changing an arrangement position and angle, and the like of the separation plate in the liquid inlet channel 112. The flow cross-sectional area of the first channel 114 in a partial region is different from the flow cross-sectional area of the second channel 115.

[0054] The atomizer 100 provided in the embodiment of this application separates, through a separator 113, the liquid inlet channel 112 into two channels with different flow cross-sectional areas. The first channel 114 and the second channel 115 have different flow cross-sectional areas, which may enable an aerosol generating substrate to produce a flow velocity difference during flow of the two channels. The flow velocity difference may cause a pressure in the two channels to be in an unbalanced state, pushing the aerosol generating substrate from a high-pressure region to a low-pressure region, driving movement of the aerosol generating substrate, and thus driving movement of the bubbles in the aerosol generating substrate, breaking a static balanced state of the bubbles, and preventing the bubbles from stopping movement after being in the balanced state in the liquid inlet channel 112, causing blockage of the liquid inlet channel 112, and resulting in poor liquid inflow in the liquid inlet channel 112. Based on the above, the structural design of the liquid inlet channel 112 of the atomizer 100 is beneficial to reduce a probability of bubbles blocking the liquid inlet channel 112, improve operating stability and reliability of the atomizer 100, and improve user experience.

[0055] In some embodiments, referring to FIG. 5, the liquid inlet channel 112 includes a first liquid inlet section 116 extending along a height direction of the atomizer 100.

[0056] The first liquid inlet section 116 is a portion of the liquid inlet channel 112 extending along the height direction (which is usually parallel or approximately parallel to the direction of gravity) of the atomizer 100. This design enables the liquid to flow into a relevant region inside the atomizer 100 along a vertical direction under the action of gravity or driven by a certain pressure.

[0057] Exemplarily, the separator 113 may be arranged in the first liquid inlet section 116, to reduce a possibility of large bubbles forming in a single channel and blocking the channel, so that the liquid flows more smoothly, which helps resolve a problem of bubble trapping in the first liquid inlet section 116.

[0058] In some embodiments, referring to FIG. 5, the liquid inlet channel 112 includes a second liquid inlet section 117 extending along a horizontal direction of the atomizer 100.

[0059] The second liquid inlet section 117 is a portion of the liquid inlet channel 112 extending along the horizontal direction (perpendicular to the direction of gravity), which enables the liquid to be transported in the horizontal direction. In the structural design of some special atomizers 100, the second liquid inlet section is configured to adjust a flow path of the liquid or cooperate with other components to achieve a specific liquid inlet function. For example, in the case of a ceramic atomization core with a capillary structure that adopts lower-side liquid absorption, the structural design of the second liquid inlet section 117 can guide the aerosol generating substrate to the bottom of the ceramic atomization core.

[0060] Exemplarily, the separator 113 may be arranged in the second liquid inlet section 117. After the horizontal channel is separated, phenomena of retention and accumulation of bubbles in the channel are alleviated, thereby reducing liquid transmission blockage caused by the bubbles, and helping resolve the problem of bubble trapping in the second liquid inlet section 117.

[0061] In some embodiments, the liquid inlet channel 112 has both a first liquid inlet section 116 and a second liquid inlet section 117. A separator 113 may be arranged in the first liquid inlet section 116 or the second liquid inlet section 117. Certainly, a separator 113 may be arranged in both the liquid inlet sections, to more comprehensively deal with a problem of bubbles trapping that may occur during liquid inflow in different directions, thereby improving stability and reliability of liquid inflow. In addition, an arrangement position and manner of the separator may be flexibly selected based on a specific structure and an operating requirement of the atomizer, to optimize a liquid inflow effect.

[0062] In some embodiments, referring to FIG. 1 to FIG. 4, the flow cross-sectional area of the at least a partial region of the first channel 114 is different along the liquid inlet direction.

[0063] The flow cross-sectional area of the at least a partial region of the first channel 114 is different along the liquid inlet direction, which may be for example that the flow cross-sectional areas of all regions of the first channel 114 are different, or may be that the flow cross-sectional area of a partial region of the first channel 114 is different, which is not limited herein.

[0064] In some embodiments, referring to FIG. 1 to FIG. 4, a flow cross-sectional area of at least a partial region of the second channel 115 is different along the liquid inlet direction.

[0065] The flow cross-sectional area of at least a partial region of the second channel 115 is different along the liquid inlet direction, which may be for example that the flow cross-sectional areas of all regions of the second channel 115 are different, or may be that the flow cross-sectional area of a partial region of the second channel 115 is different, which is not limited herein.

[0066] Since the first channel 114 and the second channel 115 are formed by separating the liquid inlet channel 112 by the separator 113, a structure of the separator 113 and the liquid inlet channel 112 that are separated directly affects a structure of the first channel 114 and the second channel 115.

[0067] A manner of forming flow cross-sectional areas of at least partial regions of the first channel 114 and the second channel 115 is not limited herein. For example, the flow cross-sectional area may be formed by controlling the separator 113 and a structure that separates the liquid inlet channel 112, or may be formed by arranging an adjustable separation plate inside the first channel 114 and the second channel 115.

[0068] The first channel 114 and the second channel 115 are enabled to have different flow cross-sectional areas in regions of different heights, so that in the liquid inlet channel 112 of the atomizer 100, regardless of the first channel 114 or the second channel 115, cross-sectional areas through which a fluid passes may vary at different positions along the liquid inlet direction. In this way, resistance experienced by bubbles during movement of the first channel 114 and the second channel 115 constantly changes, and it is difficult to maintain a balanced state. This helps reduce occurrence of bubbles getting stuck in the balanced state in the first channel 114 and the second channel 115, thereby reducing impact on liquid flow in the liquid inlet channel 112.

[0069] In some embodiments, referring to FIG. 1 to FIG. 4, the flow cross-sectional area of the at least a partial region of the first channel 114 increases along the liquid inlet direction. The flow cross-sectional area of the at least a partial region of the first channel 114 increases along the liquid inlet direction. For example, the flow cross-sectional areas of all regions of the first channel 114 may increase. In this case, the first channel 114 is entirely in a funnel-shaped structure; or the flow cross-sectional area of a partial region of the first channel 114 increases, that is, a partial structure of the first channel 114 is in a funnel-shaped structure. The specific structure is not limited herein.

[0070] In some embodiments, referring to FIG. 1 to FIG. 4, a flow cross-sectional area of at least a partial region of the second channel 115 decreases along the liquid inlet direction.

[0071] The flow cross-sectional area of the at least a partial region of the second channel 115 decreases along the liquid inlet direction. For example, the flow cross-sectional areas of all regions of the second channel 115 may decrease. In this case, the second channel 115 is entirely in a funnel-shaped structure; or the flow cross-sectional area of a partial region of the second channel 115 decreases, that is, a partial structure of the second channel 115 is in a funnel-shaped structure. The specific structure is not limited herein.

[0072] Herein, for ease of description, a position relationship between the first channel 114 and the second channel 115 in the embodiments of this application is a position relationship shown in FIG. 2 to FIG. 4. It should be noted that the position relationship between the first channel 114 and the second channel 115 is not limited in the embodiments.

[0073] FIG. 3 is used as an example. The first channel 114 is located on a left side of the second channel 115. In some other embodiments, the first channel 114 may be located on a right side of the second channel 115.

[0074] Exemplarily, along the liquid inlet direction, the flow cross-sectional area of at least a partial region of the first channel 114 increases, while the flow cross-sectional area of at least a partial region of the second channel 115 decreases. Certainly, along the liquid inlet direction, the flow cross-sectional area of the at least a partial region of the first channel 114 increases, and the flow cross-sectional area of the second channel 115 remains unchanged. Correspondingly, the flow cross-sectional area of the at least a partial region of the second channel 115 may decrease along the liquid inlet direction, and the flow cross-sectional area of the first channel 114 remains unchanged.

[0075] The first channel 114 is used as an example. In some embodiments, a plurality of gradient regions are arranged in the first channel 114, so that the increase of the flow cross-sectional area is smoother and more continuous. For example, a channel is divided into several small regions, and along the liquid inlet direction, a flow cross-sectional area of each region is greater than that of a previous region, so as to form a gradually increasing gradient. Similarly, the second channel 115 may undergo an opposite structural change along the liquid inlet direction, and details are not described herein again.

[0076] The first channel 114 and / or the second channel 115 is designed such that the flow cross-sectional area of at least a partial region along the liquid inlet direction shows a changing trend, the flow cross-sectional area of the bubbles changes during the movement of the first channel 114 and / or the second channel 115, thereby changing the resistance encountered by the bubbles during the movement of the first channel 114 and / or the second channel 115, and the structure is simple.

[0077] In some embodiments, referring to FIG. 1 to FIG. 4, a central axis of the liquid inlet channel 112 is arranged at an angle to at least a partial region of the separator 113.

[0078] Herein, at least a partial region of the separator 113 is arranged at an angle. In other words, in the liquid inlet channel 112, a portion of the separator 113 is obliquely arranged. Since a volume of the liquid inlet channel 112 is fixed, the obliquely arranged portion of the separator 113 is separated to form the first channel 114 and the second channel 115, and may be formed on a cross section perpendicular to the liquid inlet direction in an inclined region. The flow cross-sectional area of the first channel 114 of the at least a partial region of the liquid inlet channel 112 is different from the flow cross-sectional area of the second channel 115.

[0079] The angle at which the central axis of the liquid inlet channel 112 and the at least a partial region of the separator 113 are arranged is not limited herein, which is specifically determined based on an actual situation.

[0080] In some embodiments, the separator 113 is in a plate-shaped structure. The separator 113 is entirely arranged at an angle to the central axis of the liquid inlet channel 112. The separator 113 is entirely obliquely arranged in the liquid inlet channel 112. In this way, on a cross section perpendicular to the liquid inlet direction, the flow cross-sectional area of the first channel 114 of the liquid inlet channel 112 is different from the flow cross-sectional area of the second channel 115.

[0081] The central axis of the liquid inlet channel 112 is arranged at an angle to the at least a partial region of the separator 113, so that an included angle between the separator 113 and the central axis may be changed to form a structure in which the flow cross-sectional area of the first channel 114 of the liquid inlet channel 112 is different from the flow cross-sectional area of the second channel 115 on a cross section perpendicular to a liquid feeding direction. The foregoing structure may be formed without changing a shape of the separator 113 or a shape of the liquid inlet channel 112. The arrangement method is simple, which helps reduce production costs.

[0082] In some embodiments, referring to FIG. 1 to FIG. 4, the separator 113 includes a first separation section 1131 and a second separation section 1132 that are distributed along the liquid inlet direction. The first separation section 1131 is arranged on an end of the second separation section 1132 away from the liquid storage cavity 21, and a flow cross-sectional area of the first channel 114 at the first separation section 1131 is greater than a flow cross-sectional area of the second channel 115 at the first separation section 1131.

[0083] The second separation section 1132 is a portion of the separator 113 and is located close to the liquid storage cavity 21. The aerosol generating substrate in the liquid storage cavity 21 is separated into two parts through the second separation section 1132, which respectively enter the first channel 114 and the second channel 115.

[0084] The first separation section 1131 is another portion of the separator 113 and is located on an end close to the atomization cavity 111 or away from the liquid storage cavity 21. The liquid inlet channel 112 is further divided into a first channel 114 and a second channel 115 with different structures.

[0085] Herein, a structure of the first separation section 1131 is changed, so that the flow cross-sectional area of the first channel 114 at the first separation section 1131 is greater than the flow cross-sectional area of the second channel 115 at the first separation section 1131.

[0086] A specific form in which the first separation section 1131 causes the flow cross-sectional area of the first channel 114 at the first separation section 1131 to be greater than the flow cross-sectional area of the second channel 115 at the first separation section 1131 is not limited herein, which may be for example implemented by changing a surface shape of the first separation section 1131 that forms each of the first channel 114 and the second channel 115, or may be implemented by controlling distances between the first separation section 1131 and walls of the liquid inlet channels 112 on two opposite sides.

[0087] The separator 113 may be connected to the atomization base 10 through the first separation section 1131, or may be connected to the atomization base 10 through the second separation section 1132. This is not limited herein.

[0088] Herein, it should be noted that the flow cross-sectional area of the first channel 114 at the first separation section 1131 is greater than the flow cross-sectional area of the second channel 115 at the first separation section 1131, which is named only for ease of distinction and explanation. A person skilled in the art should understand that there is no distinction in order, importance, or the like herein.

[0089] Through arrangement of the first separation section 1131 and the second separation section 1132, the first channel 114 and the second channel 115 with different structures are formed through control of the structure of the first separation section 1131, which facilitates formation of the first channel 114 and the second channel 115 and reduction in the production costs.

[0090] In some embodiments, referring to FIG. 1 to FIG. 4, the first separation section 1131 and the second separation section 1132 are smoothly connected.

[0091] The smooth connection means that a connection position between the first separation section 1131 and the second separation has no obvious edges and corners, protrusions, or discontinuities, and a connection transition is natural and smooth. This connection manner means that no uneven region exists at a junction of the two separation sections that may hinder liquid flow or cause a local pressure change. The smooth connection may ensure that the aerosol generating substrate can smoothly flow when passing through different parts of the separator 113. In this way, smoothness of bubbles when moving in the first channel 114 or the second channel 115 can be increased, and a probability that the bubbles are stuck by a structure of the separator 113 can be reduced.

[0092] In some embodiments, referring to FIG. 1 to FIG. 4, the flow cross-sectional area of the first channel 114 at the second separation section 1132 is equal to the flow cross-sectional area of the second channel 115 at the second separation section 1132.

[0093] Exemplarily, the liquid inlet channel 112 is in a symmetrical structure. The flow cross-sectional area of the first channel 114 at the second separation section 1132 is equal to the flow cross-sectional area of the second channel 115 at the second separation section 1132. In other words, the second separation section 1132 is located in a middle position of the liquid inlet channel 112. The liquid inlet channel 112 is divided, at the second separation section, by the separator 113 1132 equally into the first channel 114 and the second channel 115 with the same flow cross-sectional area.

[0094] The flow cross-sectional areas of the first channel 114 and the second channel 115 are made equal at the second separation section 1132, so that the design is more concise. This helps simplify mold arrangement in an integral formation process, and reduce the difficulty in production and maintenance.

[0095] In some embodiments, referring to FIG. 1 to FIG. 4, an end surface of the separator 113 away from the liquid storage cavity 21 is an inclined surface 1133.

[0096] An angle of inclination of the inclined surface 1133 is not limited herein, which is specifically determined based on an actual situation.

[0097] In some embodiments, special textures and structures may also be arranged on the inclined surface 1133, to change a flow characteristic of the aerosol generating substrate on the inclined surface 1133. For example, a sharp protruding structure may further be arranged on the inclined surface 1133, to facilitate separation of large bubbles into smaller bubbles.

[0098] In some embodiments, the inclined surface 1133 is further coated with a hydrophobic material, to reduce adhesion of the aerosol generating substrate on the inclined surface 1133, and affect a separation effect of the inclined surface 1133 on the bubbles.

[0099] Through the arrangement of the inclined surface 1133, large bubbles that easily get stuck and float upward from the bottom portion of the liquid inlet channel 112 may be separated into small bubbles that easily flow, which separately float upward from the first channel 114 and the second channel 115, helping to resolve the problem of the bubbles being stuck in the liquid inlet channel 112.

[0100] In some embodiments, an end of the separator 113 away from the liquid storage cavity 21 is spaced apart from a wall surface of the liquid inlet channel 112.

[0101] Herein, an end of the separator 113 away from the liquid storage cavity 21 and the wall surface of the liquid inlet channel 112 are not in direct contact with, but are spaced apart from each other by a certain distance. This design enables the separator 113 to be not completely connected to the wall surface of the liquid inlet channel 112 in the liquid inlet channel 112, so that a gap is formed between the end of the separator 113 away from the liquid storage cavity 21 and the wall surface of the liquid inlet channel 112.

[0102] The gap is formed between the end of the separator 113 away from the liquid storage cavity 21 and the wall surface of the liquid inlet channel 112 that are spaced apart from each other. In this way, resistance of a liquid in a flow process is reduced. When the liquid passes through the liquid inlet channel 112, local turbulence or blockage caused by the direct connection between the separator 113 and the wall surface of the liquid inlet channel 112 may not occur. In this way, the liquid can flow more smoothly, thereby improving liquid inflow efficiency. This avoids blockage caused by impurities or sediments that may accumulate between the end of the separator 113 away from the liquid storage cavity 21 and the wall surface of the liquid inlet channel 112. The spacing arrangement enables these impurities to have more space to be carried away by the liquid, thereby reducing a risk of blockage. In this case, the spacing arrangement also enables the first channel 114 and the second channel 115 to be brought into communication with each other on the end away from the liquid storage cavity 21, and the aerosol generating substrate may flow from one channel to another channel on a bottom, to promote floating of the bubbles in a channel where the bubbles exist.

[0103] In some embodiments, referring to FIG. 1 to FIG. 4, an end of the separator 113 away from the liquid storage cavity 21 is spaced apart from the wall surface of the liquid inlet channel 112. A spacing distance is not less than 0.3 mm and not greater than 5 mm.

[0104] The spacing distance is not less than 0.3 mm and not greater than 5 mm, which may be for example 0.3 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, or 5 mm.

[0105] A gap distance between a bottom end of the separator 113 and a bottom wall of a liquid channel is set to be within the foregoing range, which also facilitates the flowing of the aerosol generating substrate between the two channels through the gap, while not affecting a flow division effect of the first channel 114 and the second channel 115.

[0106] In some embodiments, referring to FIG. 1 to FIG. 4, the atomization base 10 includes a base body 11 and a seal member 12. An inner portion of the base body 11 is provided with a liquid inlet cavity 1122 and an opening 1121 in communication with the liquid inlet cavity 1122. The opening 1121 extends through a circumferential side wall of the base body 11. At least part of the seal member 12 is arranged on the circumferential side wall of the base body 11, and seals the opening 1121. The seal member 12 and the liquid inlet cavity 1122 define a liquid inlet channel 112.

[0107] The liquid inlet cavity 1122 is a space formed on the base body 11. One end of the liquid inlet cavity 1122 is in communication with the liquid storage cavity 21, and an other end is in communication with the atomization cavity 111.

[0108] A specific structure of the liquid inlet cavity 1122 is not limited herein, which is specifically determined based on an actual situation.

[0109] The opening 1121 is a structure that brings the liquid inlet cavity 1122 into communication with an exterior of the base body 11. The opening 1121 is provided, so that the liquid inlet cavity 1122 is in an open structure. In this way, this helps demolding of the base body 11 during formation.

[0110] At least part of the seal member 12 is arranged in a circumferential direction of the base body 11 and seals the opening 1121. In this way, the seal member 12 and the liquid inlet cavity 1122 may jointly form the sealed liquid inlet channel 112. The sealing of the opening 1121 by the seal member 12 helps reduce a possibility of leakage of the aerosol generating substrate in the liquid inlet channel 112.

[0111] Herein, the liquid inlet channel 112 is formed jointly by the liquid inlet cavity 1122 and the seal member 12. The liquid inlet cavity 1122 has an opening 1121 that extends to the exterior of the base body 11 along a radial direction of the atomization cavity 111. On the one hand, it is beneficial to the formation and demolding of the liquid inlet channel 112, and on the other hand, it is also beneficial to integral formation of the separator 113 and the base body 11 and the demolding after molding, thereby reducing a quantity of parts and lowering production costs.

[0112] In the descriptions of this specification, the description of the reference term such as "in an embodiment," "in some embodiments," "in some other embodiments," "in still some other embodiments," or "for example" means that a specific feature, structure, material, or characteristic that is described with reference to the embodiment or the example is included in at least one embodiment or example of the embodiments of this application. In this application, schematic descriptions of the foregoing terms are not necessarily directed at the same embodiment or example. Moreover, the specific feature, structure, material, or characteristic described may be combined in a proper manner in any one or more embodiments or examples. In addition, a person skilled in the art may combine different embodiments or examples described in this application with features of the different embodiments or examples without mutual contradiction.

[0113] The foregoing descriptions are merely preferred embodiments of this application and are not intended to limit this application. For a person skilled in the art, this application may have various modifications and changes.

Claims

1. An atomizer (100), comprising: a housing assembly (20), wherein an interior of the housing assembly (20) is provided with a liquid storage cavity (21), and the liquid storage cavity (21) is configured to store an aerosol generating substrate; and an atomization base (10), wherein at least part of the atomization base (10) is arranged in the housing assembly (20), and an atomization cavity (111) and a liquid inlet channel (112) are formed in the atomization base (10); and the atomization base (10) further comprises a separator (113), the separator (113) extends along a liquid inlet direction of the liquid inlet channel (112), the separator (113) separates the liquid inlet channel (112) into a first channel (114) and a second channel (115), one ends of the first channel (114) and the second channel (115) are both in communication with the liquid storage cavity (21), and other ends of the first channel (114) and the second channel (115) are both in communication with an atomization core; and a flow cross-sectional area of the first channel (114) in at least a partial region of the liquid inlet channel (112) is different from a flow cross-sectional area of the second channel (115).

2. The atomizer (100) of claim 1, wherein the liquid inlet channel (112) comprises a first liquid inlet section (116) extending along a height direction of the atomizer (100); and / or a second liquid inlet section (117) extending along a horizontal direction of the atomizer (100).

3. The atomizer (100) of claim 2, wherein the flow cross-sectional area of the at least a partial region of the first channel (114) is different along the liquid inlet direction; and / or the flow cross-sectional area of the at least a partial region of the second channel (115) is different along the liquid inlet direction.

4. The atomizer (100) of claim 3, wherein the flow cross-sectional area in the at least a partial region of the first channel (114) increases along the liquid inlet direction; and / or the flow cross-sectional area in the at least a partial region of the second channel (115) decreases along the liquid inlet direction.

5. The atomizer (100) of claim 1, wherein the central axis of the liquid inlet channel (112) is arranged at an angle to at least a partial region of the separator (113).

6. The atomizer (100) of claim 1, wherein the separator (113) comprises a first separation section (1131) and a second separation section (1132) that are distributed along the liquid inlet direction, the first separation section (1131) is arranged on an end of the second separation section (1132) away from the liquid storage cavity (21), and a flow cross-sectional area of the first channel (114) at the first separation section (1131) is greater than a flow cross-sectional area of the second channel (115) at the first separation section (1131).

7. The atomizer (100) of claim 6, wherein the first separation section (1131) and the second separation section (1132) are smoothly connected; and / or a flow cross-sectional area of the first channel (114) at the second separation section (1132) is equal to a flow cross-sectional area of the second channel (115) at the second separation section (1132).

8. The atomizer (100) of any one of claims 1 to 7, wherein an end surface of the separator (113) away from the liquid storage cavity (21) is an inclined surface (1133).

9. The atomizer (100) of any one of claims 1 to 7, wherein an end of the separator (113) away from the liquid storage cavity (21) is spaced apart from the wall surface of the liquid inlet channel (112), and the spacing distance is not less than 0.3 mm and not greater than 5 mm.

10. An aerosol generating device, comprising a power supply component and the atomizer (100) of any one of claims 1 to 9, wherein the power supply component is electrically connected to the atomizer (100).

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