Device body and electronic atomization device

Abstract

A device body and an electronic atomization device are provided, including a first housing with a first liquid storage cavity; an atomization core disposed in the first housing; and a second housing, independent of the first housing and with a second liquid storage cavity for storing a liquid substrate. The second housing is connectable to the first housing, establishing a connection channel between the two cavities for flow of liquid substrate and / or air. The connection channel includes a first section adjacent to and in communication with the second cavity and at least one second section in communication with the first section. The second section is adjacent to and in communication with the first cavity. The cross-sectional area of the first section is greater than that of the second section. This design allows air bubbles in the connection channel to be easily removed, preventing from blockage and ensuring timely liquid supply.

Description

TECHNICAL FIELD

[0001] This application relates to the field of electronic atomization technologies, and in particular, to a device body and an electronic atomization device.BACKGROUND

[0002] Restricted by various factors, such as costs and laws and regulations, generally, the amount of liquid substrate stored inside an electronic atomization device is relatively small. When the liquid substrates are completely consumed, the electronic atomization device may continue to be used in manners such as liquid injection or replacement of an atomizer, or may be directly discarded. The foregoing manner brings inconvenience to a user and deteriorates user experience, and also increases use costs of the user.

[0003] A solution is to supplement the liquid substrates to a device body of the electronic atomization device through a liquid storage component with a relatively large capacity, to reduce the use costs of the user and improve the user experience. However, a problem of this solution is that, when the device body is horizontally placed, air bubbles easily accumulate in a liquid channel between the liquid storage component and the device body. Therefore, when the device body is rotated from being horizontally placed to being vertically placed, the liquid channel is easily blocked by the air bubbles, and as a result, the liquid substrates in the liquid storage component cannot be supplemented to the device body.SUMMARY

[0004] This application aims to provide a device body and an electronic atomization device, to resolve a problem that a liquid channel between a liquid storage component and the device body is easily blocked by air bubbles.

[0005] An aspect of this application provides an electronic atomization device, including: a first housing, where a first liquid storage cavity configured to store a liquid substrate is formed in the first housing; an atomization core, disposed in the first housing, where the atomization core is configured to atomize the liquid substrate to generate an aerosol; and a second housing, independent of the first housing, where a second liquid storage cavity configured to store the liquid substrate is formed in the second housing; the second housing is configured to be connected to the first housing, and a connection channel for the liquid substrate and / or air to flow is established between the first liquid storage cavity and the second liquid storage cavity, where the connection channel includes a first section that is adjacent to and is in communication with the second liquid storage cavity and at least one second section that is in communication with the first section, the second section is adjacent to and is in communication with the first liquid storage cavity, and a cross-sectional area of the first section is greater than a cross-sectional area of the second section.

[0006] In an example, a length of the second section is less than a length of the first section.

[0007] In an example, the length of the second section ranges from 0.5 mm to 1.2 mm; and / or the length of the first section ranges from 8 mm to 10 mm.

[0008] In an example, one of the first housing and the second housing is provided with a connector, and the other of the first housing and the second housing is provided with a plug hole. The connector is plugged in the plug hole to establish the connection channel.

[0009] A merging cavity and a first through hole are defined in the connector, where the merging cavity forms the first section of the connection channel, and the first through hole forms the second section of the connection channel.

[0010] In an example, the connector is disposed on the first housing, one end of the first through hole is in communication with the first liquid storage cavity, the other end of the first through hole is in communication with the merging cavity, and the merging cavity is further in external communication with the first housing; and / or the plug hole is provided on the second housing, one end of the plug hole is in communication with the second liquid storage cavity, and the other end of the plug hole is in external communication with the second housing.

[0011] In an example, a second through hole spaced apart from the first through hole is further defined in the connector, and the second through hole forms another second section in the connection channel.

[0012] In an example, the first through hole is configured to introduce the liquid substrate into the first liquid storage cavity, and the second through hole is configured to discharge air from the first liquid storage cavity.

[0013] In an example, in a length direction of the electronic atomization device, there is a height difference between the second through hole and the first through hole.

[0014] In an example, an extending length of the connector is greater than or equal to an extending length of the plug hole, so that an end of the connector is close to or enters the second liquid storage cavity.

[0015] Another aspect of this application provides a device body, including: a first housing, where a first liquid storage cavity configured to store a liquid substrate is formed in the first housing; an atomization core, disposed in the first housing, where the atomization core is configured to atomize the liquid substrate to generate an aerosol; and a connector, disposed on the first housing, where a connection channel is defined in the connector, the connection channel includes a first section that is adjacent to and is in communication with the outside and at least one second section that is in communication with the first section, the second section is adjacent to and is in communication with the first liquid storage cavity, and a cross-sectional area of the first section is greater than a cross-sectional area of the second section.

[0016] In the foregoing device body and electronic atomization device, air bubbles accumulating in the connection channel are easily removed. In this way, the connection channel is prevented from being blocked, so that the liquid storage component can supplement, in a timely manner, a liquid substrate to the device body in which the liquid substrate is consumed, and inhaling experience of a user is improved.BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily described with reference to corresponding figures in the accompanying drawings, and these exemplary descriptions are not to be construed as limiting the embodiments. Components in the accompanying drawings that have same reference numerals are represented as similar elements, and unless otherwise particularly stated, the figures in the accompanying drawings are not drawn to scale. FIG. 1 is a schematic diagram of an electronic atomization device of a device body and a liquid storage component after assembly according to an implementation of this application; FIG. 2 is a schematic diagram of a device body and a liquid storage component before assembly according to an implementation of this application; FIG. 3 is a schematic cross-sectional view of FIG. 1; FIG. 4 is a schematic cross-sectional view of FIG. 2; FIG. 5 is a schematic diagram of a device body from another perspective according to an implementation of this application; FIG. 6 is a partially enlarged schematic diagram of a device body according to an implementation of this application; FIG. 7 is a schematic diagram of a liquid storage medium according to an implementation of this application; FIG. 8 is a schematic diagram of an atomization core according to an implementation of this application; FIG. 9 is a schematic diagram of a connection tube according to an implementation of this application; FIG. 10 is a schematic diagram of a liquid guide element according to an implementation of this application; FIG. 11 is a schematic diagram of a liquid storage component from another perspective according to an implementation of this application; FIG. 12 is a schematic exploded view of a liquid storage component according to an implementation of this application; and FIG. 13 is another schematic cross-sectional view of a liquid storage component according to an implementation of this application. DETAILED DESCRIPTION

[0018] For ease of understanding of this application, this application is described in further detail below with reference to accompanying drawings and specific implementations. Unless otherwise defined, meanings of all technical and scientific terms used in this specification are the same as that usually understood by a person skilled in the technical field to which this application belongs. In this specification, the terms used in this specification of this application are merely intended to describe objectives of the specific implementations, and are not intended to limit this application.

[0019] As used herein, the term "and / or" includes any and all combinations of one or more related listed items.

[0020] As used herein, when an element is expressed as "being fixed to" another element, the element may be directly on the another element, or one or more intermediate elements may exist between the element and the another element. When an element is expressed as "being connected to" another element, the element may be directly connected to the another element, or one or more intermediate elements may exist between the element and the another element.

[0021] As used herein, the terms "upper", "lower", "left", "right", "inside", "outside" and similar expressions are merely used for an illustrative purpose.

[0022] As used herein, the terms such as "first" and "second" are used to distinguish different objects, and shall not be understood as an indication or implication of relative importance or implicit indication of a quantity of indicated technical features, a specific sequence or a primary and secondary relation.

[0023] As shown in FIG. 1 to FIG. 6, an electronic atomization device provided in an embodiment of this application includes a device body 100 and a liquid storage component 200. The number of liquid storage component 200 may be one or more.

[0024] The device body 100 includes a first housing 101. The first housing 101 may be formed by a plurality of components, for example, a main housing 101a and a top cover 101b disposed at a top end of the main housing 101a. The first housing 101 may alternatively be integrally formed.

[0025] A suction nozzle 102 is disposed at a top end of the first housing 101. The suction nozzle 102 and the first housing 101 may be integrally formed or may be separately formed. The suction nozzle 102 is configured for a user to inhale an aerosol generated by atomizing the liquid substrate.

[0026] A liquid storage cavity 103 configured to store a first liquid substrate is formed in the first housing 101. The first liquid substrate may be a liquid that includes a tobacco-containing substance having a volatile tobacco-flavor component, and may also be a liquid that includes a non-tobacco substance. For example, a liquid substrate may include water, a solvent, ethanol, a plant extract, a spice, a fragrance, or a vitamin mixture. The spice may include menthol, peppermint, green mint oil, and various fruit flavor ingredients, but is not limited thereto. The fragrance may include ingredients that can provide a plurality of smells or flavors for a user. The vitamin mixture may be a substance mixed with at least one of vitamin A, vitamin B, vitamin C, and vitamin E, but is not limited thereto. In addition, the first liquid substrate may include an aerosol forming agent, such as glycerol and propylene glycol.

[0027] The liquid storage cavity 103 is provided with a liquid storage medium103a, a sealing member 103b is disposed at an upper end of the liquid storage cavity 103, a sealing member 103c is disposed at a lower end of the liquid storage cavity 103, and the upper end and the lower end of the liquid storage cavity 103 are sealed through the sealing member 103b and the sealing member 103c.

[0028] The liquid storage medium103a is made of, for example, a fiber material or a porous material. As shown in FIG. 7, the liquid storage medium103a is substantially in a tube-shaped structure. The liquid storage medium103a may adsorb and hold the first liquid substrate and provide the first liquid substrate for an atomization core 104. When the liquid storage medium103a reaches a saturation state after liquid injection is performed, a content of a liquid substrate in the liquid storage medium103a ranges from 0.1 ml to 2 ml, for example, 0.5 ml, 0.8 ml, 1 ml, 1.5 ml, or 2 ml. A part of space between an end surface at an upper end of the liquid storage medium103a and the sealing member 103b defines and forms an air part.

[0029] The atomization core 104 is disposed in the first housing 101, and the atomization core 104 is configured to atomize the liquid substrate to generate an aerosol.

[0030] As shown in FIG. 8, the atomization core 104 includes a liquid guide element 104a and a heating element 104b. The liquid guide element 104a can absorb the liquid substrate in the liquid storage medium103a and transmit the liquid substrate to the heating element 104b. The heating element 104b may be heated by a current supply, and transfers heat to the liquid substrate that is in contact with the heating element 104b to heat the liquid substrate, so that the aerosol is further generated.

[0031] The liquid guide element 104a is configured to be in a tube-shaped structure. It may be understood that, the liquid guide element 104a may also be in a plate-shaped structure or of an another regular or irregular shape. The liquid guide element 104a may be made of a flexible fiber material, for example, the liquid guide element 104a is made of a cotton fiber, a nonwoven fabric, or a sponge. Alternatively, in another example, the liquid guide element 104a may alternatively be a rigid porous body, for example, a porous ceramic, or a porous glass. An outer side surface of the liquid guide element 104a has a protruding part 104a1 that protrudes outward in a radial direction.

[0032] The heating element 104b is disposed close to an inner side surface of the liquid guide element 104a, and the heating element 104b may be tightly attached to the inner side surface of the liquid guide element 104a, or the heating element 104b is partially or completely embedded in the liquid guide element 104a. The heating element 104b may be a resistive heating mesh, a resistive heating coil, or the like. The heating element 104b may be made of a material with an appropriate resistance temperature coefficient characteristic, such as stainless steel 316, titanium, nickel, or a nickel-chromium alloy. In an example, the heating element 104b may be formed by winding by a sheet-shaped or mesh-shaped substrate, and the winding heating element 104b is in a non-closed tube-shaped structure in a circumferential direction, that is, the heating element 104b is in a tube-shaped structure having a side opening that extends in a length direction of a device body 100. A conductive pin 104c and a conductive pin 104d are welded or disposed at two ends of the heating element 104b, to guide a current on the heating element 104b. In another example, the heating element 104b may be disposed as a structure wound on the liquid guide element 104a.

[0033] An airflow channel 105 is further provided in the first housing 101, to transmit the aerosol generated by the atomization core 104 to a suction nozzle 102, so that the aerosol is inhaled by a user. A lower end of the airflow channel 105 is in communication with an air inlet, and the air inlet may be provided on a bottom wall of the first housing 101. An upper end of the airflow channel 105 is connected to the suction nozzle 102, that is, the upper end of the airflow channel 105 is in communication with an air outlet (for details, refer to a dashed arrow S1 shown in the figure).

[0034] As shown in FIG. 9, a connection tube 105a is disposed in the first housing 101, and a hollow part inside the connection tube 105a defines and forms a part of the airflow channel 105. The connection tube 105a extends in an axial direction of the liquid storage cavity 103. An upper end of the connection tube 105a is connected to the sealing member 103b, and a lower end of the connection tube 105a is connected to the sealing member 103c. The connection tube 105a is preferably made of a relatively thin rigid material, such as a glass fiber material or stainless steel.

[0035] In a preferred implementation, the liquid storage medium103a is sleeved on the connection tube 105a. An inner diameter of the liquid storage medium103a is slightly less than an outer diameter of the connection tube 105a, so that the liquid storage medium103a is tightly sleeved on the connection tube 105a. The atomization core 104 is disposed in the connection tube 105a. The atomization core 104 is disposed coaxially with the connection tube 105a. A side wall of the connection tube 105a is further provided with a liquid guide port 105a1 provided close to the lower end of the connection tube 105a, the liquid storage medium103a covers the liquid guide port 105a1, and a part of the liquid guide element 104a is exposed in the liquid storage cavity 103 through the liquid guide port 105a1. In this way, the part of liquid guide element 104a is disposed close to the liquid storage medium103a and keeps contact with the liquid storage medium103a, so that a liquid substrate in the liquid storage cavity 103 flows to the atomization core 104 through the liquid guide port 105a1, that is, the liquid substrate is absorbed by the liquid guide element 104a, and is atomized by the heating element 104b to generate the inhalable aerosol.

[0036] The side wall of the connection tube 105a is further provided with a notch groove 105a2, and the notch groove 105a2 extends from the lower end of the connection tube 105a to the upper end of the connection tube 105a. The protruding part 104a1 of the liquid guide element 104a extends into the notch groove 105a2, to be exposed in the liquid storage cavity 103. After being assembled, the liquid storage medium103a keeps contact with a part of the protruding part 104a1, which is conducive to absorption of the liquid substrate by the liquid guide element 104a.

[0037] A circuit 106 is further disposed in the first housing 101, and the circuit 106 may control an overall operation of the device body 100. To be specific, the circuit 106 not only controls an operation of a battery core 107 and an operation of the atomization core 104, but also controls operations of other elements in the device body 100. In addition, the circuit 106 can determine whether the device body 100 is operable by checking states of the components of the device body 100.

[0038] The circuit 106 includes at least one control unit. The control unit may include a logic gate array or may include a combination of a general-purpose microprocessor and a memory configured to store programs executable in the microprocessor. In addition, a person skilled in the art should understand that, the circuit 106 may include another type of hardware.

[0039] The battery core 107 provides electric power for operating the device body 100. For example, the battery core 107 can provide the electric power to heat the heating element, and can provide the electric power required for operating the circuit 106. In addition, the battery core 107 can provide the electric power for operating other components provided in the device body 100.

[0040] The battery core 107 may be a rechargeable battery or a disposable battery. The battery core 107 may be, but is not limited to, a lithium iron phosphate (LiFePO4) battery. For example, the battery core 107 may be a lithium cobaltate (LiCoO2) battery or a lithium titanate battery.

[0041] It should be noted that, figures merely show components related to this embodiment. A person of ordinary skill in the art should understand that, the device body 100 may further include other general components other than those shown in FIG. 1 to FIG. 6. For example, an inhalation detector is further disposed in the first housing 101. The inhalation detector is configured to detect an inhalation action of the user and generate a corresponding electrical signal, that is, the inhalation detector is configured to detect whether the device body 100 is inhaled. In this way, the circuit 106, for example, the control unit, controls operations of the battery core 107 and the heating element 104b according to the electrical signal. For example, the control unit controls the battery core 107 to provide the electric power for the heating element 104b, so that the heating element 104b heats and atomizes the liquid substrate. The inhalation detector may be a common pressure sensor, a differential pressure sensor, an airflow sensor, or the like. The inhalation detector is in communication with the airflow channel 105, so that a change of an inhalation flow can be sensed when the user performs inhalation.

[0042] It should be further noted that, in the examples in FIG. 1 to FIG. 6, the foregoing components are integrally formed, and the device body 100 is a common integral device. In another example, the device body 100 includes an atomizer, and a power supply assembly that is detachably connected to the atomizer. Generally, the atomizer is also referred to as a cartridge, and generally, the power supply assembly is also referred to as a tobacco stem. The circuit 106, the battery core 107, and the inhalation detector are located in the power supply assembly. That the suction nozzle 102, the liquid storage cavity 103, and the atomization core 104 are located in the atomizer is also feasible.

[0043] It should be understood with reference to FIG. 11 to FIG. 13 that, the liquid storage component 200 includes a second housing 201. The second housing 201 may be formed by a plurality of components, for example, a main housing 201a, a bottom cover 201b, a sealing member 201c, and a sealing member 201d.

[0044] The main housing 201a is connected to the bottom cover 201b. In a preferred implementation, the main housing 201a is detachably connected to the bottom cover 201b, for example, the main housing 201a is in a snap-fit connection with the bottom cover 201b. A part of the bottom cover 201b extends into the main housing 201a. The main housing 201a and the bottom cover 201b jointly define and form a liquid storage cavity 202 configured to store a second liquid substrate. In a further implementation, a liquid injection port 201b1 is provided on the bottom cover 201b, and the second liquid substrate can be injected into the liquid storage cavity 202 through the liquid injection port 201b1. The liquid injection port 201b1 may be sealed through the sealing member, or may be sealed in another manner. This is not limited herein. The sealing member 201c is disposed between the bottom cover 201b and the main housing 201a, to prevent the second liquid substrate from leaking through a gap between the bottom cover 201b and the main housing 201a. In a preferred implementation, an outer surface of the bottom cover 201b is provided with a groove 201b2. The sealing member 201c is in an annular shape and at least a part of the sealing member 201c is accommodated in the groove 201b2, so that sealing between the bottom cover 201b and the main housing 201a is implemented.

[0045] Similar to the first liquid substrate, the second liquid substrate may be a liquid that includes a tobacco-containing substance having a volatile tobacco-flavor component, and may also be a liquid that includes a non-tobacco substance. For example, the liquid substrate may include water, a solvent, ethanol, a plant extract, a spice, a fragrance, or a vitamin mixture. The spice may include menthol, peppermint, green mint oil, and various fruit flavor ingredients, but is not limited thereto. The fragrance may include ingredients that can provide a plurality of smells or flavors for a user. The vitamin mixture may be a substance mixed with at least one of vitamin A, vitamin B, vitamin C, and vitamin E, but is not limited thereto. In addition, the second liquid substrate may include an aerosol forming agent, such as glycerol and propylene glycol.

[0046] It should be noted that, composition or properties of the second liquid substrate and the first liquid substrate may be different or may be the same. For example, in some examples, the composition of the second liquid substrate is different from the composition of the first liquid substrate, or a concentration of the second liquid substrate is different from a concentration of the first liquid substrate. For example, in some other examples, the composition of the second liquid substrate is totally the same as the composition of the first liquid substrate. The second liquid substrate may be a part of a liquid formula, and the first liquid substrate may be another part of the liquid formula. The second liquid substrate may be introduced into the liquid storage cavity 103 as a supplementary source of the first liquid substrate, so that the number of inhalations that can be performed on an electronic atomization device is increased.

[0047] A volume of the liquid storage cavity 202 is greater than a volume of the liquid storage cavity 103. Generally, a capacity of the second liquid substrate stored in the liquid storage cavity 202 ranges from 2 ml to 10 ml, for example, 2 ml, 4 ml, 5 ml, 6 ml, 8 ml, or 10 ml. It may be understood that, the volume of the liquid storage cavity 202 is slightly greater than the capacity of the stored second liquid substrate. In this way, after the second liquid substrate is stored in the liquid storage cavity 202, the second liquid substrate may be divided into two parts. One part is an air part, and the other part is a liquid substrate part. Generally, a liquid storage medium is not disposed in the liquid storage cavity 202.

[0048] The liquid storage component 200 is independent of the device body 100. For example, when a product is in a packaging state or an unused state, the liquid storage component 200 is separated from the device body 100, and the user may assemble the liquid storage component 200 on the device body 100 before use. In an example, the liquid storage component 200 may be detachably connected to the device body 100, that is, the second housing 201 may be detachably connected to the first housing 101. For example, the second housing 201 is in a buckle connection or a magnetic connection with the first housing 101. In an example, once the liquid storage component 200 is connected to the device body 100, the liquid storage component 200 is not detachable again.

[0049] The first housing 101 is further provided with an accommodating cavity 108. The accommodating cavity 108 is configured to accommodate or receive at least a part of the second housing 201. Specifically, a shape of the accommodating cavity 108 is applicable to a shape of the second housing 201. The accommodating cavity 108 is a notch groove that runs through a part of a left side wall and a part of a top wall of the first housing 101. The second housing 201 may be assembled on the first housing 101 from a left side of the first housing 101. An inner wall of the accommodating cavity 108 is provided with a snap-fit joint 108a, an outer wall of the second housing 201 is provided with a snap-fit hole 201a1. Through cooperation between the snap-fit joint 108a and the snap-fit hole 201a1, a snap-fit connection between the second housing 201 and the first housing 101 is formed. It should be noted that, a quantity of pairings of the snap-fit joint 108a and the snap-fit hole 201a1 is not limited herein, and a disposition position of the snap-fit joint 108a and a disposition position of the snap-fit hole 201a1 may be adjusted according to a requirement. After being connected, the second housing 201 and the first housing 101 jointly define and form a housing of the device body 100. It may be understood that, a connection manner of the second housing 201 and the first housing 101 is not limited to the foregoing case.

[0050] In an example, a guide mechanism may be disposed between the device body 100 and the liquid storage component 200, which is conducive to assembling the second housing 201 to the first housing 101 in a direction from the left side of the first housing 101 to a right side of the first housing 101. For example, a slider 108b is disposed on the inner wall of the accommodating cavity 108, a sliding groove 201a2 is provided on the second housing 201 of the liquid storage component 200, and the slider 108b can slide in the sliding groove 201a2, so that the second housing 201 is assembled on the first housing 101.

[0051] When the second housing 201 is connected to the first housing 101, the liquid storage cavity 103 and the liquid storage cavity 202 are sequentially substantially disposed in a width direction of the electronic atomization device. The liquid storage cavity 103 is provided close to a right side of the electronic atomization device, and the liquid storage cavity 202 is provided close to a left side of the electronic atomization device. It may be understood that, disposition of the liquid storage cavity 103 and disposition of the liquid storage cavity 202 are not limited to the foregoing case.

[0052] In an example, when the second housing 201 is connected to the first housing 101, a connection channel for the liquid substrate and / or air to flow is established between the first liquid storage cavity 103 and the second liquid storage cavity 202. The connection channel includes a first section that is adjacent to and is in communication with the second liquid storage cavity 202 and at least one second section that is in communication with the first section. The second section is adjacent to and is in communication with the first liquid storage cavity 103. A cross-sectional area of the first section is greater than a cross-sectional area of the second section.

[0053] Specifically, the first housing 101 is provided with a connector 109, and the second housing 201 is provided with a plug hole 201b3.

[0054] The connector 109 is located in the accommodating cavity 108 and one end of the connector 109 protrudes from a cavity wall of the accommodating cavity 108, for example, one end of the connector 109 protrudes from a right cavity wall of the accommodating cavity 108. The connector 109 substantially extends in a width direction of the first housing 101 toward a direction away from the right cavity wall of the accommodating cavity 108. A merging cavity 109a, a second through hole 109b, and a first through hole 109c are formed in the connector 109. The second through hole 109b is spaced apart from the first through hole 109c in a length direction of the first housing 101, that is, there is a height difference between the second through hole 109b and the first through hole 109c. For example, the second through hole 109b and the first through hole 109c are spaced apart through a separating plate 109d. The second through hole 109b and the first through hole 109c are provided close to the first liquid storage cavity 103, and the merging cavity 109a is provided away from the first liquid storage cavity 103 relative to the second through hole 109b or the first through hole 109c, or the merging cavity 109a is provided close to the outside of the first housing 101. One end of the second through hole 109b is in communication with the first liquid storage cavity 103, and the other end of the second through hole 109b is in communication with the merging cavity 109a. One end of the first through hole 109c is also in communication with the first liquid storage cavity 103, and the other end of the first through hole 109c is also in communication with the merging cavity 109a. The merging cavity 109a is further in external communication with the first housing 101.

[0055] One end of the plug hole 201b3 is provided close to a bottom part of the second liquid storage cavity 202 and is in communication with the second liquid storage cavity 202, and the other end of the plug hole 201b3 is in external communication with the second housing 201.

[0056] When the second housing 201 is connected to the first housing 101, the connector 109 is plugged in the plug hole 201b3, so that the first liquid storage cavity 103 is in communication with the second liquid storage cavity 202, and the connection channel for the liquid substrate and / or the air to flow between the first liquid storage cavity 103 and the second liquid storage cavity 202 is established. The merging cavity 109a defines and forms the first section in the connection channel, the first through hole 109c defines and forms the second section in the connection channel, and the second through hole 109b defines and forms another second section in the connection channel.

[0057] In this way, the liquid substrate in the second liquid storage cavity 202 can flow to the merging cavity 109a, to introduce a liquid substrate into the first liquid storage cavity 103 or supplement a liquid substrate to the first liquid storage cavity 103 in which the liquid substrate is consumed through the first through hole 109c. However, when the liquid substrate in the second liquid storage cavity 202 is reduced, air in the first liquid storage cavity 103 can be discharged through the second through hole 109b and the merging cavity 109a in sequence or can flow to the second liquid storage cavity 202. In this way, an air pressure difference between the first liquid storage cavity 103 and the second liquid storage cavity 202 is balanced, so that the second liquid substrate stored in the second liquid storage cavity 202 can smoothly flow to the first liquid storage cavity 103, to supplement, in a timely manner, a liquid substrate to the first liquid storage cavity 103 in which the liquid substrate is consumed.

[0058] It can be learnt from the above that, the first through hole 109c defines and forms a liquid channel, and the second through hole 109b defines and forms an air channel. It may be understood that, the first through hole 109c and other components may jointly define and form the liquid channel. Similarly, the second through hole 109b and other components or the merging cavity 109a and other components may also jointly define and form the liquid channel.

[0059] A length of the liquid channel (a distance through which the liquid substrate flows in the liquid channel), for example, an extending length of the first through hole 109c in the width direction of the first housing 101 is relatively short. Generally, a length of the liquid channel ranges from 0.5 mm to 1.2 mm, or ranges from 0.6 mm to 1.2 mm, or ranges from 0.7 mm to 1.2 mm, or ranges from 0.7 mm to 1 mm, or ranges from 0.7 mm to 0.9 mm. The length of the liquid channel is set to be relatively short, which is conducive to supplementing the liquid substrate in the second liquid storage cavity 202 to the first liquid storage cavity 103. A length of the air channel, for example, an extending length of the second through hole 109b in the width direction of the first housing 101 is also set to be relatively short. The length of the air channel can be set with reference to the length of the foregoing liquid channel.

[0060] A length of the first section or the merging cavity 109a (a distance through which the liquid substrate flows in the merging cavity or the merging cavity 109a), for example, an extending length of the merging cavity 109a in the width direction of the first housing 101 is far greater than the length of the liquid channel or the length of the air channel, that is, a length of the second section is less than the length of the first section. Generally, the length of the first section or the merging cavity 109a ranges from 8 mm to 10 mm, or ranges from 8 mm to 9 mm, or ranges from 8 mm to 8.5 mm. A cross-sectional area (a cross-sectional area that intersects with a plane extending in a length direction and a thickness direction of the electronic atomization device) of the merging cavity 109a is also far greater than a cross-sectional area of the liquid channel or the air channel.

[0061] The merging cavity 109a is provided to, facilitate the liquid substrate in the second liquid storage cavity 202 to flow to the connector 109, and further the liquid substrate is supplemented to the first liquid storage cavity 103 through the first through hole 109c. In addition, when the electronic atomization device is horizontally placed, air bubbles easily accumulate in the first through hole 109c. Therefore, when the electronic atomization device is rotated from being horizontally placed to being vertically placed, the air bubbles accumulating in the first through hole 109c are easily removed through the merging cavity 109a, so that the liquid channel is prevented from being blocked. In addition, it can be learnt from the figure that, an extending length of the connector 109 is greater than or equal to an extending length of the plug hole 201b3, so that an end of the connector 109 can be close to or enter the second liquid storage cavity 202, thereby shortening a length of a flow path of the liquid or the air.

[0062] At least a part of the sealing member 201d is accommodated in the plug hole 201b3. The sealing member 201d has a through hole 201d1, and a sealing film 201d2 that is pierceable is disposed in the through hole 201d1. When the second housing 201 is connected to the first housing 101, the connector 109 may extend into the through hole 201d1 and pierce the sealing film 201d2, so that the first liquid storage cavity 103 is in communication with the second liquid storage cavity 202. After the second housing 201 is connected to the first housing 101, the sealing member 201d is located between an outer wall of the connector 109 and an inner wall of the plug hole 201b3, so that sealing is formed.

[0063] In a further implementation, a liquid guide element 110 is further disposed in the liquid storage cavity 103. As shown in FIG. 10, the liquid guide element 110 is substantially in a tube-shaped structure. The liquid guide element 110 and the liquid storage medium103a are sequentially disposed in the axial direction of the liquid storage cavity 103. The liquid storage medium103a is disposed close to a second through hole 109b, and the liquid guide element 110 is disposed close to the first through hole 109c, that is, the liquid guide element 110 is in communication with the liquid channel. The first through hole 109c is covered by the liquid guide element 110. An upper surface of the liquid guide element 110 keeps contact with a lower surface of the liquid storage medium103a, a lower surface of the liquid guide element 110 is in contact with a bottom part of the liquid storage cavity 103, and an outer side surface of the liquid guide element 110 keeps contact with a wall of the liquid storage cavity 103 that is defined and formed. In this way, when the second liquid substrate in the liquid storage cavity 202 flows to the liquid storage cavity 103 through the liquid channel, the second liquid substrate can be absorbed by the liquid guide element 110 and transmitted to the liquid storage medium103a, and is further indirectly transferred to the liquid guide element 104a in the atomization core 104, that is, the second liquid substrate is absorbed by the liquid guide element 104a in the atomization core 104. Such disposition enables the second liquid substrate stored in the liquid storage cavity 202 to smoothly flow to the atomization core 104, to avoid a problem that due to a relatively fast liquid supply rate, abnormal noise is generated when the user performs inhalation, and the liquid substrate is easily inhaled by the user.

[0064] In the foregoing implementation, a material of the liquid guide element 110 may be the same as or different from a material of the liquid storage medium103a. A density of the liquid guide element 110 is greater than a density of the liquid storage medium103a. In this way, it is ensured that the liquid guide element 110 can vigorously absorb the liquid substrate in the liquid channel, so that the liquid substrate in the liquid guide element 110 is smoothly transmitted to the liquid storage medium103a. In addition, oversaturation of the liquid storage medium103a can be relieved through the liquid guide element 110, and a probability of leakage of the liquid substrate is reduced.

[0065] In the foregoing embodiment, there may be a specific gap between a wall of the liquid storage cavity 103 that is defined and formed and an outer side surface of the liquid storage medium103a, so that air can be in communication with an air part of the liquid storage cavity 103 through the gap between the wall of the liquid storage cavity 103 that is defined and formed and the outer side surface of the liquid storage medium103a, to implement air exchange.

[0066] In the foregoing implementations, the liquid guide element 110 is sleeved on the connection tube 105a, that is, the liquid guide element 110 is disposed around the connection tube 105a. The liquid guide element 110 is located between the liquid channel and the atomization core 104. An inner diameter of the liquid guide element 110 is greater than an outer diameter of the connection tube 105a, so that an interval space is formed between an inner side surface of the liquid guide element 110 and an outer side surface of the connection tube 105a. In this way, the liquid guide element 110 is not in direct contact with the atomization core 104, and the liquid storage medium103a is only in contact with a part of the atomization core 104, to avoid a case in which an amount of the liquid absorbed by the atomization core 104 is excessively saturated, and a risk that the liquid substrate leaks from the liquid storage cavity 103 to the outside is reduced.

[0067] In the foregoing implementation, because the protruding part 104a1 of the liquid guide element 104a extends into the notch groove 105a2 of the connection tube 105a, the protruding part 104a1 is exposed in the interval space between the inner side surface of the liquid guide element 110 and the outer side surface of the connection tube 105a, and the liquid substrate in the interval space can be absorbed by the liquid guide element 104a, so that the risk that the liquid substrate leaks from the liquid storage cavity 103 to the outside is reduced.

[0068] It should be noted that, the device body 100 and the liquid storage component 200 are independent of each other. Before the device body 100 is connected to the liquid storage component 200 (that is, before the first housing 101 is connected to the second housing 201), the device body 100 may be used alone and be inhaled, and the atomization core 104 only atomizes the first liquid substrate. After the device body 100 is connected to the liquid storage component 200 (that is, after the first housing 101 is connected to the second housing 201), the atomization core 104 can atomize both the first liquid substrate and the second liquid substrate. In another example, after an atomizer or a cartridge is first combined with a power supply assembly (or a tobacco stem) for use, the atomizer or the cartridge is then connected to the liquid storage component 200 for use.

[0069] It should be noted that, that the foregoing connector is disposed on the second housing 201, and the plug hole is provided on the first housing 101 is also feasible.

[0070] It should be noted that, in another example, before the second housing 201 is connected to the first housing 101, that the electronic atomization device cannot be used and be inhaled is also feasible. In other words, only after the second housing 201 is connected to the first housing 101, the electronic atomization device can be used and be inhaled. In this case, the atomization core 104 can atomize both the first liquid substrate and the second liquid substrate.

[0071] It should be noted that, the specification of this application and the accompanying drawings thereof illustrate preferred embodiments of this application. However, this application may be implemented in various different forms, and is not limited to the embodiments described in this specification. These embodiments are not intended to be an additional limitation on the content of this application, and are described for a purpose of providing a more thorough and comprehensive understanding of the content disclosed in this application. Moreover, the foregoing technical features may continue to be combined to form various embodiments not listed above, and all such embodiments shall be construed as falling within a scope of the specification of this application. Further, a person of ordinary skill in the art may make improvements and variations according to the foregoing descriptions, and such improvements and variations shall all fall within the protection scope of the appended claims of this application.

Claims

1. An electronic atomization device, comprising: a first housing (101), wherein a first liquid storage cavity (103) for storing a liquid substrate is formed in the first housing (101); an atomization core (104), disposed in the first housing (101) and configured to atomize the liquid substrate to generate an aerosol; and a second housing (201), independent of the first housing (101), wherein a second liquid storage cavity (202) for storing the liquid substrate is formed in the second housing (201); the second housing (201) is configured to be connected to the first housing (101), and a connection channel for the liquid substrate and / or air to flow is established between the first liquid storage cavity (103) and the second liquid storage cavity (202), wherein the connection channel comprises a first section adjacent to and in communication with the second liquid storage cavity (202) and at least one second section in communication with the first section, the second section being adjacent to and in communication with the first liquid storage cavity (103), wherein a cross-sectional area of the first section is greater than a cross-sectional area of the second section.

2. The electronic atomization device according to claim 1, wherein a length of the second section is less than a length of the first section.

3. The electronic atomization device according to claim 1, wherein a length of the second section ranges from 0.5 mm to 1.2 mm; and / or a length of the first section ranges from 8 mm to 10 mm.

4. The electronic atomization device according to claim 1, wherein one of the first housing (101) and the second housing (201) is provided with a connector (109), and the other of the first housing (101) and the second housing (201) is provided with a plug hole (201b3); and the connector (109) is plugged in the plug hole (201b3) to establish the connection channel; and a merging cavity (109a) and a first through hole (109c) are defined in the connector (109), wherein the merging cavity (109a) forms the first section of the connection channel, and the first through hole (109c) forms the second section of the connection channel.

5. The electronic atomization device according to claim 4, wherein the connector (109) is disposed on the first housing (101), one end of the first through hole (109c) is in communication with the first liquid storage cavity (103), the other end of the first through hole (109c) is in communication with the merging cavity (109a), and the merging cavity (109a) is further in communication with an exterior of the first housing (101); and / or the plug hole (201b3) is provided on the second housing (201), one end of the plug hole (201b3) is in communication with the second liquid storage cavity (202), and the other end of the plug hole (201b3) is in communication with an exterior of the second housing (201).

6. The electronic atomization device according to claim 5, wherein a second through hole (109b) spaced apart from the first through hole (109c) is further defined in the connector (109), and the second through hole (109b) forms another second section of the connection channel.

7. The electronic atomization device according to claim 6, wherein the first through hole (109c) is configured to introduce the liquid substrate into the first liquid storage cavity (103), and the second through hole (109b) is configured to discharge air from the first liquid storage cavity (103).

8. The electronic atomization device according to claim 6, wherein in a length direction of the electronic atomization device, there is a height difference between the second through hole (109b) and the first through hole (109c).

9. The electronic atomization device according to claim 5, wherein an extending length of the connector (109) is greater than or equal to an extending length of the plug hole (201b3), so that an end of the connector (109) is close to or enters the second liquid storage cavity (202).

10. A device body (100), comprising: a first housing (101), wherein a first liquid storage cavity (103) for storing a liquid substrate is formed in the first housing (101); an atomization core (104), disposed in the first housing (101) and configured to atomize the liquid substrate to generate an aerosol; and a connector (109), disposed on the first housing (101), wherein a connection channel is defined in the connector (109), the connection channel comprises a first section adjacent to and in communication with an exterior and at least one second section in communication with the first section, the second section being adjacent to and in communication with the first liquid storage cavity (103), wherein a cross-sectional area of the first section is greater than a cross-sectional area of the second section.

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