Patent Description:
An aerosol is a colloidal dispersion system formed by solid or liquid small particles dispersed and suspended in a gas medium. Because the aerosol may be absorbed by a human body through the respiratory system, a new alternative absorption method is provided for users. For example, an atomization device that can bake and heat an herb or ointment aerosol-generation substrate to generate aerosols is applied to different fields to deliver inhalable aerosols to the users to replace conventional product forms and absorption methods.

An electronic atomization device usually uses an atomizer to heat and vaporize an aerosol-generation substrate. In the related art, a cotton core atomization core is plugged in a sleeve, and when the aerosol-generation substrate in a liquid storage cavity flows continuously to the atomization core through a liquid inlet hole on the sleeve, a negative pressure will be formed in the liquid storage cavity, which will cause obstructed liquid feeding of the aerosol-generation substrate An example of an electronic atomization device can be seen in document <CIT>.

Based on this, it is necessary to provide an atomizer and an electronic atomization device to address the problem of obstructed liquid feeding of the aerosol-generation substrate in the related art.

In the foregoing atomizer, an aerosol-generation substrate in the liquid storage cavity can directly flow to the atomization core through the liquid inlet hole, so as to supply liquid to the atomization core. In addition, the atomizer further includes the vent tube, which is sleeved between the sleeve and the atomization core, and spaced apart from at least one of the sleeve or the atomization core to form the vent channel, and the vent channel is configured to be in communication with the liquid inlet hole and the outside. In this way, by arranging the vent tube between the atomization core and the sleeve, a gap formed between the vent tube and at least one of the atomization core or the sleeve forms the vent channel. When the aerosol-generation substrate flows from the liquid storage cavity to the atomization core, external air can flow to the liquid inlet hole and the liquid storage cavity through the vent channel, so as to prevent formation of a negative pressure in the liquid storage cavity, and maintain the air pressure balance between the liquid storage cavity <NUM> and the outside atmospheric pressure, thereby ensuring smooth liquid feeding.

In an embodiment, a size of the vent channel ranges from <NUM> to <NUM>.

In an embodiment, the atomization core includes a base body and a core body, the base body is sleeved in the sleeve, and the core body is at least partially mounted on the base body, where a through hole communicating the liquid inlet hole and the core body is provided on the base body; and the vent tube is sleeved between the base body and the sleeve, and the vent tube is spaced apart from at least one of the base body or the sleeve to form the vent channel.

In an embodiment, the vent tube is fixedly sleeved on the base body, and a gap is formed between the vent tube and the sleeve in a radial direction so as to define the vent channel.

In an embodiment, the vent tube is fixedly sleeved on an inner wall of the sleeve, and a gap is formed between the vent tube and the base body in a radial direction so as to define the vent channel.

In an embodiment, a gap is formed between the vent tube and each of the sleeve and the base body in a radial direction so as to define the vent channel.

In an embodiment, a vent groove extending and provided in an axial direction of the vent tube is provided on the base body, one part of the vent groove is located inside the vent tube, and the other part of the vent groove extends to be in communication with the through hole, and the vent groove comprises the vent channel.

In an embodiment, the sleeve includes a first tube section and a second tube section connected to each other, a diameter of the first tube section is greater than that of the second tube section, and both the atomization core and the vent tube are sleeved in the first tube section, where the core body is internally provided with a run-through hole, the run-through hole is in communication with an interior of the second tube section, and the run-through hole and the second tube section are combined to form an airflow channel; the second tube section has a transition connection portion connected to the first tube section, an air passing gap is formed between the transition connection portion and the atomization core, and the air passing gap is in communication with the airflow channel and the vent channel.

In an embodiment, a protruding boss is formed on an outer circumferential surface of the base body, and the vent tube is sleeved outside the base body and located between the transition connection portion and the protruding boss.

In an embodiment, one end of the vent tube in the axial direction is supported on the protruding boss, and a gap is formed between the other end of the vent tube in the axial direction and the transition connection portion; and a gap is formed between the vent tube and each of the base body and the sleeve in the radial direction, or the vent tube is fixedly sleeved on the base body, and a gap is formed between the vent tube and the sleeve in the radial direction.

In an embodiment, the vent tube is fixedly sleeved on the inner wall of the sleeve, and a gap is formed between the vent tube and each of the outer circumferential surface of the base body and the protruding boss.

In an embodiment, the vent tube is a fiberglass tube.

An electronic atomization device is provided, including the foregoing atomizer.

Reference numerals: <NUM>. atomizer; <NUM>. housing; <NUM>. liquid storage cavity; <NUM>. sleeve; <NUM>. liquid inlet hole; <NUM>. first tube section; <NUM>. second tube section; <NUM>. transition connection portion; <NUM>. atomization core; <NUM>. base body; <NUM>. through hole; <NUM>. vent groove; <NUM>. protruding boss; <NUM>. core body; <NUM>. vent tube; <NUM>. vent channel.

To make the foregoing objects, features and advantages of the invention more comprehensible, detailed description is made to specific implementations of the invention below with reference to the accompanying drawings. In the following description, many specific details are described for thorough understanding of the invention. However, the invention can be implemented in many other manners different from those described herein. A person skilled in the art may make similar improvements without departing from the connotation of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

In the description of the invention, it should be understood that, orientation or position relationships indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are orientation or position relationship shown based on the accompanying drawings, and are merely used for describing the invention and simplifying the description, rather than indicating or implying that the mentioned apparatus or element should have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be construed as a limitation to the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the quantity of technical features indicated. Therefore, a feature restricted by "first" or "second" may explicitly indicate or implicitly include at least one of such features. In the description of the invention, unless otherwise explicitly defined, "a plurality of" means at least two, for example, two, three, and the like.

In the invention, unless otherwise expressly specified and limited, the terms such as "installation", "link", "connection" and "fixation" should be understood in a broad sense, for example, it may be fixed connection or detachable connection, or integration; and it may be mechanical connection or electrical connection; and it may be direct link or indirect link through an intermediary, and it may be internal communication of two elements or interaction between two elements, unless specifically limited otherwise. A person of ordinary skill in the art may understand the specific meanings of the foregoing terms in the invention according to specific situations.

In the invention, unless otherwise explicitly specified and defined, a first feature "on" or "below" a second feature may mean that the first feature and the second feature are in direct contact, or the first feature and the second feature are in indirect contact through an intermediary. In addition, that the first feature is "above", "over", or "on" the second feature may indicate that the first feature is directly above or obliquely above the second feature, or may merely indicate that a horizontal height of the first feature is higher than that of the second feature. That the first feature is "below", "under", and "beneath" the second feature may indicate that the first feature is directly below or obliquely below the second feature, or may merely indicate that the horizontal height of the first feature is lower than that of the second feature.

It should be noted that, when a component is referred to as "being fixed to" or "being arranged on" another component, the component may be directly on another component, or there may be an intermediate component. When an element is considered to be "connected to" another element, the element may be directly connected to another element, or an intermediate element may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used in this specification are only for purposes of illustration but not indicate a unique implementation.

Referring to <FIG>, according to an embodiment of the present invention, an atomizer <NUM> is provided, which includes a housing <NUM> and an atomization assembly. The atomization assembly includes a sleeve <NUM> and an atomization core <NUM>. The sleeve <NUM> is arranged in the housing <NUM>. A liquid storage cavity <NUM> is defined between the housing <NUM> and the sleeve <NUM>. The atomization core <NUM> is assembled in the sleeve <NUM>. A liquid inlet hole <NUM> communicating the atomization core <NUM> and the liquid storage cavity <NUM> is provided on the sleeve <NUM>. An aerosol-generation substrate in the liquid storage cavity <NUM> can directly flow to the atomization core <NUM> through the liquid inlet hole <NUM>, so as to supply liquid to the atomization core <NUM>.

In addition, the atomizer <NUM> further includes a vent tube <NUM>. The vent tube <NUM> is sleeved between the sleeve <NUM> and the atomization core <NUM>, and is spaced apart from at least one of the sleeve <NUM> or the atomization core <NUM> to form a vent channel <NUM>. The vent channel <NUM> is configured to be in communication with the liquid inlet hole <NUM> and an outside. In this way, by arranging the vent tube <NUM> between the atomization core <NUM> and the sleeve <NUM>, a gap between the vent tube <NUM> and at least one of the atomization core <NUM> or the sleeve <NUM> forms the vent channel <NUM>. When the aerosol-generation substrate flows from the liquid storage cavity <NUM> to the atomization core <NUM>, external air can flow to the liquid inlet hole <NUM> and the liquid storage cavity <NUM> through the vent channel <NUM>, so as to prevent formation of a negative pressure in the liquid storage cavity <NUM>, and maintain the air pressure balance between the liquid storage cavity <NUM> and the outside atmosphere, thereby ensuring smooth liquid feeding.

In some embodiments, a size of the vent channel <NUM> ranges from <NUM> to <NUM>, and the relatively narrow size of the vent channel <NUM> can form a capillary effect. Specifically, the vent channel <NUM> can have a ventilation state and a closed state. In the closed state, the air pressure in the liquid storage cavity <NUM> is in balance with the outside atmosphere, and an interior of the vent channel <NUM> is sealed by a liquid film formed by the capillary effect. In other words, the vent tube <NUM> is arranged between the sleeve <NUM> and the atomization core <NUM>, and the space between the sleeve <NUM> and the atomization core <NUM> is divided by the vent tube <NUM>, so that both a gap between the vent tube <NUM> and the sleeve <NUM> and a gap between the vent tube <NUM> and the atomization core <NUM> are very small, and then when pressure difference between the inside and outside is balanced, the aerosol-generation substrate in the liquid storage cavity <NUM> can enter the vent channel <NUM> by the capillary effect, and a liquid film blocking the vent channel <NUM> is formed, so as to close the vent channel <NUM> and prevent the aerosol-generation substrate in the liquid storage cavity <NUM> from leaking through the vent channel <NUM>.

Moreover, when in the ventilation state, a negative pressure is generated in the liquid storage cavity <NUM>, the liquid film ruptures under the action of the outside atmosphere, and the vent channel <NUM> communicates the liquid inlet hole <NUM> with the outside, so that an external airflow can enter the liquid storage cavity <NUM> through the vent channel <NUM>, so as to maintain the air pressure balance between the liquid storage cavity <NUM> and the outside atmosphere during liquid feeding, thereby preventing obstructed liquid feeding.

In some embodiments, the atomization core <NUM> includes a base body <NUM> and a core body <NUM>. The base body <NUM> is sleeved in the sleeve <NUM>, and the core body <NUM> is sleeved in the base body <NUM>. A through hole <NUM> communicating the liquid inlet hole <NUM> and the core body <NUM> is provided on the base body <NUM>, and the aerosol-generation substrate in the liquid storage cavity <NUM> passes through the liquid inlet hole <NUM> and then flows to the core body <NUM> through the through hole <NUM> on the base body <NUM>, so as to directly supply liquid to the core body <NUM> in the base body <NUM>. In addition, the vent tube <NUM> is sleeved between the base body <NUM> and the sleeve <NUM>, and is spaced apart from at least one of the base body <NUM> or the sleeve <NUM> to form the vent channel <NUM>, so that the gap between the vent tube <NUM> and at least one of the base body <NUM> or the sleeve <NUM> forms the vent channel <NUM> to ensure smooth liquid feeding; and when the atomizer <NUM> is not in use, the liquid film in the vent channel <NUM> is used for sealing to prevent liquid leakage.

Further, the core body <NUM> is constructed as inner cotton wrapping heating wires, so that in the assembly process, it is only necessary to insert the inner cotton wrapping the heating wires into the base body <NUM>, and then place the base body <NUM> into the sleeve <NUM>. Outer cotton wound around the base body <NUM> in a conventional cotton core body <NUM> is eliminated to improve the convenience of assembly. In addition, the vent channel <NUM> is defined by the vent tube <NUM>, so as to prevent obstructed liquid feeding.

In some embodiments, the sleeve <NUM> includes a first tube section <NUM> and a second tube section <NUM> connected to each other, and a diameter of the first tube section <NUM> is greater than that of the second tube section <NUM>. Both the atomization core <NUM> and the vent tube <NUM> are sleeved in the first tube section <NUM>. The core body <NUM> is internally provided with a run-through hole, the run-through hole is in communication with the interior of the second tube section <NUM>, and the run-through hole and the second tube section are combined to form an airflow channel. When flowing through the airflow channel, the external airflow can carry the aerosol-generation substrate vaporized by the core body <NUM> to flow outward for the user to inhale. In addition, the second tube section <NUM> has a transition connection portion <NUM> connected to the first tube section33, and an air passing gap is formed between the transition connection portion <NUM> and the atomization core <NUM>. The air passing gap communicates the airflow channel with the vent channel <NUM>, so that during liquid feeding, the external air can flow through the airflow channel to the vent channel <NUM> through the air passing gap, and finally flow to the liquid storage cavity <NUM>, so as to balance the air pressure in the liquid storage cavity <NUM> with the outside atmosphere, thereby ensuring smooth liquid feeding.

Further, a protruding boss <NUM> is formed on an outer circumferential surface of the base body <NUM>. The vent tube <NUM> is sleeved outside the base body <NUM> and located between the transition connection portion <NUM> and the protruding boss <NUM>. In this way, the vent tube <NUM> can be limited by the protruding boss <NUM> to a position close to the transition connection portion <NUM>, thereby facilitating the communication between the vent channel <NUM> and the air passing gap at the transition connection portion <NUM>.

In some embodiments, the vent tube <NUM> is fixedly sleeved on the base body <NUM>, that is, the vent tube <NUM> is in a zero clearance fit or interference fit with the base body <NUM>. A gap defining the vent channel <NUM> is formed between the vent tube <NUM> and the sleeve <NUM> in a radial direction. In this way, the vent tube <NUM> is fixedly assembled on the base body <NUM>, and the gap between the vent tube <NUM> and the sleeve <NUM> in the radial direction is configured to form the vent channel <NUM>.

Specifically, one end of the vent tube <NUM> in the axial direction is supported on the protruding boss <NUM>, and a gap is formed between the other end of the vent tube <NUM> in the axial direction and the transition connection portion <NUM>, so that the vent tube <NUM> is limitedly fixed on the protruding boss <NUM> of the base body <NUM>, and the gap is formed between the vent tube <NUM> and the transition connection portion <NUM> of the sleeve <NUM>, which allows the airflow flowing in from the air passing gap to flow to the vent channel <NUM> between the vent tube <NUM> and the sleeve <NUM> after passing through the gap between the vent tube <NUM> and the transition connection portion <NUM>, thereby ensuring smooth liquid feeding.

In some other embodiments, the vent tube <NUM> is fixedly sleeved on an inner wall of the sleeve <NUM>, and a gap defining the vent channel <NUM> is formed between the vent tube <NUM> and the base body <NUM> in a radial direction. In this way, the vent tube <NUM> is mounted and fixed through the sleeve <NUM>, and the vent channel <NUM> is formed by the gap between the vent tube <NUM> and the base body <NUM> in the radial direction, so as to ensure effective liquid feeding.

Specifically, a gap is formed between the vent tube <NUM> and each of the outer circumferential surface of the base body <NUM> and the protruding boss <NUM>, and the protruding boss <NUM> will not be completely in contact with the vent tube <NUM> to block the vent channel <NUM>. In addition, the protruding boss <NUM> may be configured to reduce the diameter of the vent channel <NUM>, so as to facilitate forming the capillary effect when no liquid is fed.

In some other embodiments, a gap defining the vent channel <NUM> is formed between the vent tube <NUM> and each of the sleeve <NUM> and the base body <NUM> in a radial direction. In this way, the vent channels <NUM> can be formed on both an inner side and an outer side of the vent tube <NUM>, and the diameter of the vent channel <NUM> is relatively small, which is more convenient to use the capillary effect to form a liquid film, thereby achieving better sealing effects when no liquid is fed.

Specifically, one end of the vent tube <NUM> in the axial direction is supported on the protruding boss <NUM>, and a gap is formed between the other end of the vent tube <NUM> in the axial direction and the transition connection portion <NUM>, so that when an external airflow flows to the vent tube <NUM>, the external airflow is divided into two parts, one part of external airflow flows into the vent channel <NUM> between the vent tube <NUM> and the sleeve <NUM>, and the other part of external airflow flows into the vent channel <NUM> between the vent tube <NUM> and the base body <NUM>. In addition, because a gap is formed between the vent tube <NUM> and the transition connection portion <NUM>, this part of airflow can still flow out between the protruding boss <NUM> and the vent tube <NUM>, which is equivalent to that the vent tube <NUM> is movably supported on the protruding boss <NUM>, and a flow space can be formed when the airflow flows through, which will not affect flowing of the airflow, thereby ensuring smooth liquid feeding.

Referring to <FIG> and <FIG>, in still some other embodiments, a vent groove <NUM> extending in an axial direction of the vent tube <NUM> is provided on the base body <NUM>. One part of the vent groove <NUM> is located inside the vent tube <NUM>, and the other part of the vent groove <NUM> extends to be in communication with the through hole <NUM>. The vent groove <NUM> is constructed to be the vent channel <NUM>, so as to guide the external airflow to flow to the liquid inlet hole <NUM> through the through hole <NUM>, thereby ensuring smooth liquid feeding. In other words, a part of the base body <NUM> is removed, and when the vent tube <NUM> is sleeved outside the base body <NUM>, the vent channel <NUM> is directly defined between the vent tube <NUM> and the core body <NUM> inside the base body <NUM>.

Specifically, one end of the vent groove <NUM> away from the through hole <NUM> is opened, which allows the external airflow to flow into the vent tube <NUM> and then directly enter the vent groove <NUM>, thereby ensuring that the external airflow flows to the vent groove <NUM> smoothly.

Further, the vent tube <NUM> is sleeved on the base body <NUM> with zero gap or the vent tube <NUM> is in interference fit with the base body <NUM>, and the vent tube <NUM> is sleeved on the sleeve <NUM> with zero gap or the vent tube <NUM> is in interference fit with the sleeve <NUM>. The manner of mounting the vent tube <NUM>, the base body <NUM>, and the sleeve <NUM> is not limited herein.

In any one of the embodiments, the vent tube <NUM> is a fiberglass tube, so that it is very convenient to remove the outside wrapping process and use a fiberglass tube to assemble the atomization assembly. Moreover, the fiberglass tube can make the consistency of ventilation more stable. In addition, the aerosol-generation substrate in the liquid storage cavity <NUM> can be directly in contact with the atomization core <NUM> through the liquid inlet hole <NUM> on the sleeve <NUM>, thereby improving the liquid guiding speed and stability. Further, optionally, the housing <NUM> has a suction nozzle, and the vent tube <NUM> is located at one end of the sleeve <NUM> adjacent to the suction nozzle, so as to form the vent channel <NUM> between the suction nozzle and the liquid inlet hole <NUM>, which allows the external airflow to enter the vent channel <NUM> through the suction nozzle, thereby ensuring smoothness of liquid feeding.

Based on the same concept, according to an embodiment of the present invention, an electronic atomization device is provided, which includes the foregoing atomizer <NUM>. The atomizer <NUM> includes a housing <NUM>, a sleeve <NUM>, and an atomization core <NUM>. The sleeve <NUM> is arranged in the housing <NUM>, a liquid storage cavity <NUM> is defined between the housing <NUM> and the sleeve <NUM>, the atomization core <NUM> is assembled in the sleeve <NUM>, and a liquid inlet hole <NUM> communicating the atomization core <NUM> and the liquid storage cavity <NUM> is provided on the sleeve <NUM>. An aerosol-generation substrate in the liquid storage cavity <NUM> can directly flow to the atomization core <NUM> through the liquid inlet hole <NUM>, so as to supply liquid to the atomization core <NUM>.

Claim 1:
An atomizer (<NUM>), comprising:
a housing (<NUM>);
an atomization assembly comprising a sleeve (<NUM>) and an atomization core (<NUM>), wherein the sleeve (<NUM>) is arranged in the housing (<NUM>), a liquid storage cavity (<NUM>) is defined between the housing (<NUM>) and the sleeve (<NUM>), the atomization core (<NUM>) is arranged in the sleeve (<NUM>), and a liquid inlet hole (<NUM>) communicating the atomization core (<NUM>) and the liquid storage cavity (<NUM>) is provided on the sleeve (<NUM>); characterized in that the atomizer comprises
a vent tube (<NUM>) sleeved between the sleeve (<NUM>) and the atomization core (<NUM>), the vent tube (<NUM>) being spaced apart from at least one of the sleeve (<NUM>) or the atomization core (<NUM>) to form a vent channel (<NUM>), wherein the vent channel (<NUM>) is configured to be in communication with the liquid inlet hole (<NUM>) and an outside.