CN220756584U

CN220756584U - Atomizer and atomizing device

Info

Publication number: CN220756584U
Application number: CN202322111112.1U
Authority: CN
Inventors: 黄福国
Original assignee: Shenzhen Smoore Technology Ltd
Current assignee: Shenzhen Smoore Technology Ltd
Priority date: 2023-08-07
Filing date: 2023-08-07
Publication date: 2024-04-12
Anticipated expiration: 2033-08-07

Abstract

The utility model provides an atomizer and an atomization device. The shell is provided with a liquid storage cavity for containing aerosol atomization matrix; the top cover is arranged in the shell; the atomization assembly is arranged in the top cover and is used for atomizing the aerosol atomization matrix to generate aerosol; the top cover is provided with a ventilation channel communicated with the liquid storage cavity and the external atmosphere and a fluid channel communicated with the liquid storage cavity and the atomization assembly, and the ventilation channel is provided with a valve piece for controlling the communication and closing of the liquid storage cavity and the external atmosphere; the cross-sectional area of the portion of the ventilation channel upstream of the valve member decreases in a direction toward the end of the ventilation channel. The embodiment of the utility model can enlarge the acceptable tolerance range of product production, improve the ventilation stability of the valve member and improve the performance consistency of the product.

Description

Atomizer and atomizing device

Technical Field

The utility model belongs to the technical field of atomization, and particularly relates to an atomizer and an atomization device.

Background

The atomizer may be used to atomize an aerosol atomizing substrate into an aerosol. A ventilation channel which enables the liquid storage cavity to keep air pressure balance with the outside atmosphere is arranged in the related atomizer so as to ensure that aerosol atomization substrates in the liquid storage cavity can stably discharge liquid. The air exchanging channel is provided with a valve piece to control the communication and closing of the liquid storage cavity and the external atmosphere, when a user uses the atomizer, air flow enters from the air exchanging channel and opens the valve piece, so that the liquid storage cavity is communicated with the external atmosphere to exchange air; when the atomizer is not used by a user, the valve piece controls the liquid storage cavity and the outside atmosphere to be closed, so that the leakage of aerosol atomized matrixes in the liquid storage cavity to the outside through the ventilation channel can be reduced.

However, in order to ensure the stability of the air flow entering from the ventilation channel and opening the valve member, the related valve member has high dependence on tolerance ranges such as hardness, thickness, width, sectional area, etc., and the existing production process of the valve member cannot meet the requirement of mass production, resulting in poor consistency of product mass, and thus cannot realize stable mass production.

Disclosure of Invention

In view of the above, the present utility model provides an atomizer and an atomizing device to solve the technical problem of how to improve the stability of the air flow entering from the ventilation channel and opening the valve member.

The technical scheme of the utility model is realized as follows:

an embodiment of the present utility model provides an atomizer, including: a shell provided with a liquid storage cavity for accommodating aerosol atomization matrixes; the top cover is arranged in the shell; the atomization assembly is arranged in the top cover and used for atomizing the aerosol atomization matrix to generate aerosol; a valve member; the top cover is provided with a ventilation channel communicated with the liquid storage cavity and the external atmosphere and a fluid channel communicated with the liquid storage cavity and the atomization assembly, and the ventilation channel is provided with a valve piece for controlling the communication and closing of the liquid storage cavity and the external atmosphere; the cross-sectional area of the portion of the ventilation channel upstream of the valve member decreases in a direction toward the end of the ventilation channel.

In some embodiments, the ventilation channel includes a guide slot at the end of the airflow, the guide slot being disposed at the top of the top cover, the valve member closing the guide slot; the cross-sectional area of the guide groove gradually decreases toward the end of the ventilation channel.

In some embodiments, the extending direction of the two side walls of the guide groove is at an oblique angle of 1-10 degrees; and/or, towards the direction of approaching the tail end of the ventilation channel, the bottom wall of the guide groove is inclined towards the direction of the liquid storage cavity.

In some embodiments, the slope of the bottom wall of the guide slot increases and then decreases in a direction toward the end of the ventilation channel.

In some embodiments, the guide slot has a depth ranging from 0.01mm to 0.5mm; and/or the width of the guide groove ranges from 0.1mm to 1.0mm.

In some embodiments, further comprising: the top cover sealing piece is arranged on the outer surface of the top cover to seal the liquid storage cavity; wherein, the top wall of the top cover sealing piece adjacent to the liquid storage cavity is provided with a through hole which is communicated with the liquid storage cavity and the fluid channel; the ventilation channel is provided between the cap seal and the cap.

In some embodiments, the cap seal comprises: a surrounding part surrounding a side wall of the top cover to seal a gap between the side wall of the top cover and the housing; the ventilation channel part is formed between the side wall of the top cover and the surrounding part; a cover part connected to one end of the surrounding part and covering the top of the top cover; the cover part is provided with the through hole, one end of the valve part is connected with the surrounding part, the other end of the valve part is a free end, the valve part is covered above the guide groove, and the other end of the valve part can open and close the ventilation channel along with the gas introduced by the ventilation channel.

In some embodiments, the cross-sectional area of the valve member decreases progressively toward the end of the ventilation channel.

In some embodiments, the cap has an atomization chamber therein; the atomizing assembly includes: the heating piece is arranged in the atomizing cavity and is used for heating the aerosol atomizing substrate and atomizing to generate aerosol; a heating element seal disposed on top of the heating element to isolate the fluid passage from the atomizing chamber; the atomizer is further provided with an air outlet channel for outflow of aerosol, and the atomizing cavity is communicated with the air outlet channel.

An embodiment of the present utility model provides an atomizing apparatus, including: a nebulizer as claimed in any one of the preceding claims; and the power supply is used for supplying power to the atomizer.

The embodiment of the utility model provides an atomizer, which comprises a shell, a top cover, an atomizing assembly and a valve piece. The shell is provided with a liquid storage cavity for containing aerosol atomization matrix; the top cover is arranged in the shell; the atomization assembly is arranged in the top cover and is used for atomizing the aerosol atomization matrix to generate aerosol; the top cover is provided with a ventilation channel communicated with the liquid storage cavity and the external atmosphere and a fluid channel communicated with the liquid storage cavity and the atomization assembly, and the ventilation channel is provided with a valve piece for controlling the communication and closing of the liquid storage cavity and the external atmosphere; the cross-sectional area of the portion of the ventilation channel upstream of the valve member decreases in a direction toward the end of the ventilation channel. In the embodiment of the utility model, the cross-sectional area of the portion of the ventilation channel upstream of the valve member decreases in the direction toward the end of the ventilation channel, and when the air flow is taken in from the ventilation channel, the air flow first flows through the portion of the ventilation channel upstream of the valve member, and the air flow velocity becomes faster due to the decrease in the cross-sectional area of the ventilation channel, and then flows to the portion of the ventilation channel where the valve member is provided to impinge on the valve member. The air inlet speed of the impact valve piece is increased, so that larger acting force can be effectively applied to the end part of the valve piece, and the valve piece is easier to open and puncture a liquid film formed by aerosol atomization matrix to realize ventilation. And the acting force applied by the air flow to the valve member is increased, so that the valve member is easier to open under the impact of the air flow, and the required range of the hardness, thickness, width, sectional area and the like of the valve member is reduced in actual production, so that the acceptable tolerance range of product production can be enlarged, the ventilation stability of the valve member is improved, and the product performance consistency is improved.

Drawings

Fig. 1 is a schematic perspective view of an atomizer according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of an atomizer according to an embodiment of the utility model in one direction;

FIG. 3 is a schematic perspective view of a top cover according to an embodiment of the present utility model;

FIG. 4 is a schematic perspective view of a cap seal according to an embodiment of the present utility model;

FIG. 5 is a top view of a top cover according to an embodiment of the present utility model;

FIG. 6 is a cross-sectional view of a top cover of an embodiment of the present utility model;

FIG. 7 is a top view of a cap and cap seal of an embodiment of the present utility model;

FIG. 8 is a cross-sectional view of a cap and cap seal of an embodiment of the present utility model;

FIG. 9 is a cross-sectional view of an alternative orientation of the atomizer according to an embodiment of the present utility model;

fig. 10 is a schematic perspective view of an atomization device according to an embodiment of the present utility model;

fig. 11 is a schematic view of an atomizing device according to an embodiment of the present disclosure.

Reference numerals illustrate:

10. an atomizer; 1. a housing; 11. a liquid storage cavity; 12. a suction nozzle; 2. a top cover; 21. a ventilation channel; 22. a fluid channel; 23. a guide groove; 24. an atomizing chamber; 25. a groove; 3. an atomizing assembly; 31. a heating member; 32. a heating element seal; 33. a heating wire; 4. a valve member; 5. a cap seal; 51. a through hole; 52. a surrounding portion; 53. a cover part; 6. an air outlet channel; 7. an atomizing device; 71. and a power supply.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The individual features described in the specific embodiments can be combined in any suitable manner, without contradiction, for example by combination of different specific features, to form different embodiments and solutions. Various combinations of the specific features of the utility model are not described in detail in order to avoid unnecessary repetition.

In the following description, references to the term "first\second\ …" are merely to distinguish between different objects and do not indicate that the objects have the same or a relationship therebetween. It should be understood that references to orientation descriptions "above", "below", "outside", "inside", "left" and "right" refer to the left and right directions as illustrated in the particular corresponding schematic drawings, which may or may not be the left and right directions in normal use.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. "plurality" means greater than or equal to two.

The embodiment of the utility model provides an atomizer and an atomization device. The atomizing device includes an atomizer operable to atomize an aerosol atomizing substrate into an aerosol. The atomizer can be applied to various atomization scenes, for example, the atomizer can be applied to medical cosmetology, nicotine delivery, daily life and other atomization scenes, and the aerosol atomization substrate can be medicinal powder, spice, nicotine preparation, aerosol substrate capable of generating special odor and the like. Those skilled in the art can understand that the application scenario of the atomizer may be multiple, and the embodiment of the present utility model does not limit the application scenario of the atomizer.

As shown in fig. 1 and 2, an embodiment of the present utility model provides an atomizer 10, and the atomizer 10 includes a housing 1, a top cover 2, an atomizing assembly 3, and a valve member 4. Wherein, the shell 1 is provided with a liquid storage cavity 11 for containing aerosol atomized matrixes, the top of the shell 1 in the length direction of the atomizer 10 is provided with a suction nozzle 12, and a user can suck the aerosol generated after atomization through the suction nozzle 12; the top cover 2 is arranged in the shell 1; the atomizing assembly 3 is disposed in the top cover 2, and is used for atomizing the aerosol atomizing substrate to generate aerosol, and a user can absorb the aerosol generated by atomizing the atomizing assembly 3 of the atomizer 10 through the suction nozzle 12. For example, the atomizing assembly 3 may include a heating element for heating and atomizing an aerosol atomizing substrate to generate aerosol, and/or an atomizing nozzle for atomizing the aerosol atomizing substrate to form atomized liquid droplet particles and spraying the atomized liquid droplet particles outwards, such as a gas-liquid two-phase flow atomizing nozzle, in which a gas flow channel and a fluid channel are provided, and into which the gas and the aerosol atomizing substrate enter, and the gas impinges on the aerosol atomizing substrate, i.e., atomizes the aerosol atomizing substrate, so as to form atomized liquid droplet particles and spray the atomized liquid droplet particles to a cavity outside the atomizing nozzle for the user to suck.

As shown in fig. 2 and 3, the top cover 2 is provided with a ventilation channel 21 communicating the liquid storage cavity 11 with the external atmosphere and a fluid channel 22 communicating the liquid storage cavity 11 with the atomization assembly 3, when the aerosol atomization matrix in the liquid storage cavity 11 enters the atomization assembly 3 through the fluid channel 22 for atomization, negative pressure is generated in the liquid storage cavity 11 due to outflow of liquid, and at the moment, the external air flow can enter the liquid storage cavity 11 through the ventilation channel 21 for ventilation so as to reduce the negative pressure, so that the air pressure balance between the liquid storage cavity 11 and the external atmosphere is maintained, and the aerosol atomization matrix in the liquid storage cavity 11 can smoothly enter the atomization assembly 3.

As shown in fig. 4-6, the ventilation channel 21 is provided with a valve member 4 to control the communication and closing between the liquid storage cavity 11 and the external atmosphere, when the negative pressure in the liquid storage cavity 11 is small, the valve member 4 closes the ventilation channel 21 under the gravity action of the aerosol atomized substrate in the liquid storage cavity 11 to control the liquid storage cavity 11 and the external atmosphere to be closed, so that the aerosol atomized substrate in the liquid storage cavity 11 can be reduced from leaking outwards through the ventilation channel 21. When the valve member 4 controls the liquid storage cavity 11 to be communicated with the external atmosphere, the external air flow can enter the liquid storage cavity 11 through the air exchange channel 21 to exchange air so as to reduce negative pressure, and the liquid storage cavity 11 is kept in air pressure balance with the external atmosphere. For example, the valve member 4 may be made of a flexible material, so that the valve member 4 may be deformed under the action of an external force, for example, the valve member 4 may be opened by the impact of an air flow, so that the liquid storage cavity 11 is communicated with the external atmosphere; when no air passes through the ventilation channel 21, the valve member 4 is overlapped on the ventilation channel 21, so that the liquid storage cavity 11 and the external atmosphere are closed.

As shown in fig. 5, the ventilation channel 21 has two ends, and if the ventilation function is combined, because ventilation is directional, the air inlet end is the initial end of the ventilation channel 21, and the air outlet end is the end of the ventilation channel 21. The cross-sectional area of the portion of the ventilation channel 21 upstream of the valve member 4 decreases in a direction toward the end of the ventilation channel 21, and it is understood that the magnitude of the decrease in the cross-sectional area of the ventilation channel 21 may be uniform or nonuniform, as long as the cross-sectional area of the ventilation channel 21 as a whole exhibits a tendency to decrease; upstream refers herein to closer proximity to the source of the gas stream. The valve member 4 may be disposed at the end of the ventilation channel 21 or may be disposed in the middle of the ventilation channel 21, but the air flow first flows through the ventilation channel 21 upstream of the valve member 4 and then flows to the ventilation channel 21 where the valve member 4 is disposed, so that when the air flow is taken in from the ventilation channel 21, the flow rate of the air flow flowing through the ventilation channel 21 having a reduced sectional area becomes faster as it flows toward the end near the ventilation channel 21, that is, the flow rate of the air flow flowing through the ventilation channel 21 upstream of the valve member 4 becomes faster and then flows to the ventilation channel 21 where the valve member 4 is disposed at a higher speed to impinge on the valve member 4 thereat.

By the lift formula l=c ₁ *Ρv ² * S knows the aerodynamic speed and the resultingThe force is square, and by increasing the air inlet speed, more effective force can be applied to the end of the valve member 4, so that the liquid film formed by aerosol atomization matrix is more easily pierced to realize ventilation. The increasing of the acting force reduces the required range of the hardness, thickness, width, sectional area and the like of the valve member 4, for example, the thickness of the related valve member 4 is 0.2+0.02mm to enable normal ventilation, and the thickness of the valve member 4 adopting the scheme of the embodiment of the utility model can be 0.25+0.1/0.05mm, so that the production acceptable tolerance range of the valve member 4 is enlarged, the ventilation stability of the valve member 4 is improved, and the product performance consistency is improved.

In the embodiment of the utility model, the cross-sectional area of the portion of the ventilation channel upstream of the valve member decreases in the direction toward the end of the ventilation channel, and when the air flow is taken in from the ventilation channel, the air flow first flows through the portion of the ventilation channel upstream of the valve member, and the air flow velocity becomes faster due to the decrease in the cross-sectional area of the ventilation channel, and then flows to the portion of the ventilation channel where the valve member is provided to impinge on the valve member. The air inlet speed of the impact valve piece is increased, so that larger acting force can be effectively applied to the end part of the valve piece, and the valve piece is easier to open and puncture a liquid film formed by aerosol atomization matrix to realize ventilation. And the acting force exerted by the air flow on the valve member is increased, so that the valve member is easier to open under the impact of the air flow, and the required range of the hardness, thickness, width, sectional area and the like of the valve member is reduced in actual production, so that the acceptable tolerance range of product production can be enlarged, the ventilation stability of the valve member 4 is improved, and the uniformity of product performance is improved.

In some embodiments, as shown in fig. 3 and 5, the ventilation channel 21 includes a guiding groove 23 at the end of the airflow, and the ventilation channel 21 further includes other parts, for example, a groove 25 formed on the side wall of the top cover 2, where the groove 25 communicates with the guiding groove 23 and the external atmosphere, that is, the groove 25 is disposed near the initial end of the airflow to communicate with the external atmosphere; the guide groove 23 is provided near the end of the airflow to communicate with the liquid storage chamber 11. The grooves 25 may be formed in a uniform cross section or may be formed in a reduced cross section. The guide groove 23 is arranged at the top of the top cover 2, the valve member 4 seals the guide groove 23, and the top of the top cover 2 is close to the liquid storage cavity 11 as shown in fig. 2, so that the guide groove 23 is close to the liquid storage cavity 11, and when air flows in the guide groove 23, ventilation with the liquid storage cavity 11 is more direct and convenient; the sectional area of the guide groove 23 gradually decreases toward the end of the ventilation channel 21, and then the magnitude of the decrease in the sectional area of the guide groove 23 is uniform.

The ventilation channel of the embodiment of the utility model comprises the guide groove at the tail end of the air flow, and the sectional area of the guide groove gradually decreases towards the direction close to the tail end of the ventilation channel, namely the decreasing amplitude of the sectional area of the guide groove is uniform, when the air flow flows in the guide groove, the flow speed of the air flow can be uniformly increased, and then the flow speed of the air flow is steadily increased, so that the energy loss of the air flow can be effectively reduced, and the valve piece can be opened more steadily.

In some embodiments, as shown in fig. 3 and 5, the extending directions of the two side walls of the guide groove 23 are at an oblique angle ranging from 1 ° to 10 ° and the oblique angle is θ as shown in fig. 5, since the extending directions of the two side walls of the guide groove 23 have a certain oblique angle, the closer to the airflow end, the closer the two side walls of the guide groove 23 are, so that the cross-sectional area of the guide groove 23 near the airflow end is reduced in the horizontal direction. As shown in fig. 3, one side wall of the guide groove 23, which is close to the groove 25, is inclined toward the groove 25, so that the air flow in the groove 25 can flow into the guide groove 23 under the guiding action of the inclined side wall, and the air flow can flow more smoothly; and/or, in connection with fig. 6, the bottom wall of the guide groove 23 is smoothly transited in a direction approaching the end of the ventilation channel 21 and inclined in a direction toward the liquid storage chamber 11, it being understood that the bottom wall of the guide groove 23 is linearly extended or is smoothly transited in a curve, and the bottom wall of the guide groove 23 is at least partially sloped so as to be inclined in a direction toward the liquid storage chamber 11, thereby reducing the sectional area of the guide groove 23 approaching the end of the air flow in the vertical direction.

In the embodiment of the utility model, when the air flow is close to the tail end of the air flow, the oblique angles of the extending directions of the two side walls of the guide groove are smaller, and/or the bottom wall of the guide groove is inclined towards the direction close to the tail end of the air exchange channel, so that when the air flow flows to the tail end of the air flow in the guide groove, the air flow tends to be in a point or a smaller plane, that is, a large amount of air flow is compressed and accelerated to impact the tail end, so that the acting force formed by the air flow can open the valve member more easily, and the liquid film formed by the aerosol atomization substrate is punctured to realize the air exchange between the external atmosphere and the liquid storage cavity.

In some embodiments, as shown in fig. 3 and 6, the slope of the bottom wall of the guiding groove 23 is changed toward the end of the ventilation channel 21, and the slope of the bottom wall of the guiding groove 23 is increased and then decreased, it can be understood that the slope of the bottom wall of the guiding groove 23 is smaller when the air flow in the groove 25 just enters the guiding groove 23, so that the air flow in the groove 25 can enter the guiding groove 23 more smoothly; as the flow is made in a direction toward the end of the ventilation passage 21, the slope of the bottom wall of the guide groove 23 increases first, so that the sectional area of the guide groove 23 decreases in the vertical direction, the air flow is compressed and the flow is accelerated; as shown in fig. 7 and 8, the slope of the bottom wall of the guide groove 23 is reduced again so that the air flow hits the valve member 4 at the end of the air flow at a relatively high speed and can flow into the liquid storage chamber 11 relatively smoothly, and the slope of the bottom wall of the guide groove 23 at the end of the air flow is relatively small so that the valve member 4 can be stably overlapped over the guide groove 23 when the valve member 4 is positioned over the guide groove 23, thereby separating the guide groove 23 from the liquid storage chamber 11 when the atomizer 10 is not in use.

In the embodiment of the utility model, the gradient of the bottom wall of the guide groove is firstly increased and then decreased towards the direction close to the tail end of the ventilation channel, namely, the gradient of the bottom wall of the guide groove is in a small, big and small mode, so that the air flow in the groove can smoothly enter the guide groove, and the air flow is accelerated to flow at the part with the larger gradient, and when the air flow flows to the tail end of the air flow, the gradient of the bottom wall of the guide groove is smaller, so that the air flow impacts the valve piece positioned at the tail end of the air flow at a larger speed and can smoothly flow into the liquid storage cavity, and the valve piece can be stably lapped above the guide groove, thereby separating the guide groove and the liquid storage cavity when the atomizer is not used, and reducing outward leakage of the liquid in the liquid storage cavity.

In some embodiments, as shown in fig. 5 and 6, the cross-sectional area of the guide groove 23 decreases toward the end of the ventilation channel 21, so that the depth of the guide groove 23 is variable, and the depth of the guide groove 23 ranges from 0.01mm to 0.5mm; and/or the width of the guide groove 23 may be variable, the width of the guide groove 23 ranging from 0.1mm to 1.0mm. In the embodiment of the utility model, the depth of the guide groove is changeable, and/or the width of the guide groove is changeable, and the depth and the width range of the guide groove are respectively limited, so that the sectional area of the tail end of the guide groove is smaller, the acting force of air flow is not dispersed, the acting force is concentrated at the end part of the valve member, the ventilation position is ensured to be fixed, and the consistency of products is improved.

In some embodiments, as shown in fig. 2 and 4, the atomizer 10 further includes a cap seal 5, where the cap seal 5 is disposed on the outer surface of the cap 2 to seal the liquid storage chamber 11, and the cap seal 5 may be made of a material with better sealing performance, for example, silica gel; wherein, the top wall of the top cover sealing piece 5 adjacent to the liquid storage cavity 11 is provided with a through hole 51 for communicating the liquid storage cavity 11 with the fluid channel 22, so that aerosol atomized matrix in the liquid storage cavity 11 enters the fluid channel 22 through the through hole 51; a ventilation channel 21 is arranged between the top cover sealing member 5 and the top cover 2, the ventilation channel 21 is communicated with the outside atmosphere and the liquid storage cavity 11, and the top cover sealing member 5 does not seal the two ends of the inlet and outlet of the ventilation channel 21. The ventilation channel 21 is provided with a valve element 4, which valve element 4 may be a separate component or may be part of the cap seal 5 to serve as valve element 4. The atomizer provided by the embodiment of the utility model further comprises the top cover sealing piece, and the top cover sealing piece is arranged on the outer surface of the top cover to seal the liquid storage cavity, so that leakage of aerosol atomization matrix in the liquid storage cavity through a gap between the top cover and the shell can be reduced, and the use experience of a user is improved.

In some embodiments, as shown in fig. 4 and 7, the top cover seal 5 includes a surrounding portion 52 and a covering portion 53. Wherein the surrounding portion 52 surrounds the side wall of the top cover 2 to seal the gap between the side wall of the top cover 2 and the housing 1, so as to reduce leakage of the aerosol atomized substrate in the liquid storage cavity 11 through the gap between the side wall of the top cover 2 and the housing 1; the ventilation passage 21 portion (groove 25) is formed between the side wall of the top cover 2 and the surrounding portion 52; the cover 53 is connected to one end of the surrounding portion 52 and covers the top of the top cover 2; wherein, the guide groove 23 is arranged at the top of the top cover 2, the cover part 53 is provided with a through hole 51, the guide groove 23 is communicated with the liquid storage cavity 11 through the through hole 51, one end of the valve member 4 is connected with the surrounding part 52, the other end of the valve member 4 is a free end, the valve member 4 is covered above the guide groove 23, the other end (free end) of the valve member 4 can open and close the ventilation channel 21 along with the gas introduced by the ventilation channel 21, when the gas flow flows in the guide groove 23, the acting force exerted by the gas flow on the valve member 4 is increased along with the increase of the flow velocity of the gas flow, so that the valve member 4 is opened under the impact of the gas flow to perform ventilation; when the atomizer 10 is not in use, no air flow flows in the guide groove 23, and the valve member 4 covers the upper side of the guide groove 23 to close the ventilation channel 21, so that leakage of aerosol atomization matrix in the liquid storage cavity 11 in the state that the atomizer 10 is not in use is reduced.

The top cover sealing piece comprises a surrounding part and a covering part, wherein the surrounding part is arranged on the side wall of the top cover in a surrounding mode, and the covering part covers the top of the top cover, so that leakage of aerosol atomization matrix in the liquid storage cavity through a gap between the side wall of the top cover and the shell and a gap of the top cover can be reduced; one end of the valve member is connected with the surrounding part, and then the valve member and the surrounding part can be used as a whole in actual design and production, so that actual production and installation are convenient, and the valve member is used as a part of the top cover sealing member, so that the top cover sealing member not only plays a role in sealing the liquid storage cavity, but also is used as the valve member for opening and closing the ventilation channel, and the functions are diversified.

In some embodiments, as shown in fig. 5 and 7, the cross-sectional area of the valve member 4 gradually decreases toward the end of the ventilation channel 21, that is, as the cross-sectional area of the guide groove 23 gradually decreases, the cross-sectional area of the valve member 4 correspondingly gradually decreases. In the embodiment of the utility model, the sectional area of the valve member gradually decreases towards the end of the ventilation channel, so that the acting force required by the air flow to open the valve member is smaller, and the air flow is easier to impact and open the valve member, thereby realizing ventilation between the external atmosphere and the liquid storage cavity.

In some embodiments, as shown in fig. 2 and 9, the cross-sections shown in fig. 2 and 9 are two perpendicular cross-sections of the atomizer, and the arrow directions shown in fig. 2 and 9 refer to the gas-liquid flow direction of the atomizer 10. The top cover 2 is internally provided with an atomization cavity 24; the atomizing assembly 3 includes a heater 31 and a heater seal 32. Wherein the aerosol-atomizing substrate in the liquid storage chamber 11 flows to the heating member 31 through the fluid passage 22, for example, the heating member 31 may be a porous ceramic heating member so that the aerosol-atomizing substrate can be absorbed and stored; the heating element 31 is disposed in the atomizing chamber 24 and is used for heating the aerosol to atomize the substrate and generate aerosol; the heating element sealing element 32 is arranged on the top of the heating element 31 to isolate the fluid channel 22 from the atomizing cavity 24, so that aerosol atomizing matrixes in the liquid storage cavity 11 are not easy to leak into the atomizing cavity 24 directly when flowing into the heating element 31 through the fluid channel 22, and the heating element sealing element 32 can be made of materials with good sealing performance such as silica gel; the atomizing chamber 24 is not directly connected to the fluid passage 22, but indirectly connected to the fluid passage 22 through the heating member 31, and the heating member 31 absorbs and stores the aerosol atomized substrate flowing from the fluid passage 22, heats and atomizes the aerosol atomized substrate into aerosol, and emits the aerosol into the atomizing chamber 24. The heating wires 33 of the heating element 31 are distributed on one side of the heating element 31 far away from the fluid channel 22, namely, on the bottom of the heating element 31, so that the liquid absorbing surface and the heating surface of the heating element 31 can be separated to a certain extent, and most aerosol atomization matrixes are atomized and emitted into the atomization cavity 24 on one side of the bottom of the heating element 31, so that the atomization effect is good; the atomizer 10 further has an air outlet channel 6 through which the aerosol flows out, the atomization cavity 24 is communicated with the air outlet channel 6, and the aerosol is dispersed into the atomization cavity 24 and flows out through the air outlet channel 6 for being absorbed by a user.

The atomization assembly comprises the heating element and the heating element sealing element, and the aerosol atomization substrate is heated and atomized into aerosol through the suction of the heating element, so that the generation of harmful substances such as tar, suspended particles and the like is reduced to a certain extent because combustion is not needed; the heating element seals the fluid channel and the atomizing cavity, aerosol atomized substrate flowing in the fluid channel needs to be atomized into aerosol through heating element heating, and then the aerosol is dispersed into the atomizing cavity, so that gas-liquid separation is realized, and therefore, when a user sucks, the aerosol is fine and smooth, and the user experience is good.

As shown in fig. 10 and 11, an embodiment of the present utility model provides an atomizing device 7, and the atomizing device 7 includes an atomizer 10 and a power supply 71. Wherein the power source 71 is used for supplying power to the atomizer 10, for example, the power source 71 is electrically connected with the heating element 31 of the atomizer 10, so that when the power source 71 is turned on, the heating element 31 of the atomizer 10 is electrified to generate heat, and the aerosol atomized substrate is heated and atomized to generate aerosol. The atomizing device comprises the atomizer and the power supply, wherein the power supply is used for supplying power to the atomizer, and the opening and closing of the atomizer can be controlled by controlling the power supply, for example, the power supply can be a visual button for a user, so that the user can control the opening and closing of the atomizer through controlling the button, and the use of the atomizer is convenient for the user.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model.

Claims

1. An atomizer, comprising:

a shell provided with a liquid storage cavity for accommodating aerosol atomization matrixes;

the top cover is arranged in the shell;

the atomization assembly is arranged in the top cover and used for atomizing the aerosol atomization matrix to generate aerosol; and

A valve member;

the top cover is provided with a ventilation channel communicated with the liquid storage cavity and the external atmosphere and a fluid channel communicated with the liquid storage cavity and the atomization assembly, and the ventilation channel is provided with a valve piece for controlling the communication and closing of the liquid storage cavity and the external atmosphere; the cross-sectional area of the portion of the ventilation channel upstream of the valve member decreases in a direction toward the end of the ventilation channel.

2. The atomizer of claim 1 wherein said ventilation passageway includes a guide slot at the end of the air flow, said guide slot being disposed on top of said top cover, said valve member closing said guide slot; the cross-sectional area of the guide groove gradually decreases toward the end of the ventilation channel.

3. The atomizer of claim 2, wherein the extending direction of the two side walls of the guide groove is at an oblique angle of 1-10 degrees; and/or, towards the direction of approaching the tail end of the ventilation channel, the bottom wall of the guide groove is inclined towards the direction of the liquid storage cavity.

4. A nebulizer as claimed in claim 3, wherein the slope of the bottom wall of the guide groove increases and decreases in a direction toward the end of the ventilation channel.

5. The atomizer according to claim 2, wherein the depth of the guide groove ranges from 0.01mm to 0.5mm; and/or the width of the guide groove ranges from 0.1mm to 1.0mm.

6. The nebulizer of claim 2, further comprising:

the top cover sealing piece is arranged on the outer surface of the top cover to seal the liquid storage cavity;

wherein, the top wall of the top cover sealing piece adjacent to the liquid storage cavity is provided with a through hole which is communicated with the liquid storage cavity and the fluid channel; the ventilation channel is provided between the cap seal and the cap.

7. The nebulizer of claim 6, wherein the cap seal comprises:

a surrounding part surrounding a side wall of the top cover to seal a gap between the side wall of the top cover and the housing; the ventilation channel part is formed between the side wall of the top cover and the surrounding part;

a cover part connected to one end of the surrounding part and covering the top of the top cover;

the cover part is provided with the through hole, one end of the valve part is connected with the surrounding part, the other end of the valve part is a free end, the valve part is covered above the guide groove, and the other end of the valve part can open and close the ventilation channel along with the gas introduced by the ventilation channel.

8. The atomizer of claim 7 wherein said valve member has a cross-sectional area that gradually decreases toward a direction toward an end of said ventilation passageway.

9. The atomizer of claim 1 wherein said cap has an atomization chamber therein; the atomizing assembly includes:

the heating piece is arranged in the atomizing cavity and is used for heating the aerosol atomizing substrate and atomizing to generate aerosol;

a heating element seal disposed on top of the heating element to isolate the fluid passage from the atomizing chamber;

the atomizer is further provided with an air outlet channel for outflow of aerosol, and the atomizing cavity is communicated with the air outlet channel.

10. An atomizing device, comprising:

the nebulizer of any one of claims 1-9;

and the power supply is used for supplying power to the atomizer.