WO2022089336A1

WO2022089336A1 - Atomizer and electronic atomization device

Info

Publication number: WO2022089336A1
Application number: PCT/CN2021/125940
Authority: WO
Inventors: 李鹏
Original assignee: 深圳麦克韦尔科技有限公司
Priority date: 2020-10-28
Filing date: 2021-10-25
Publication date: 2022-05-05
Also published as: CN112369680A

Abstract

The present application relates to an atomizer and an electronic atomization device. The atomizer is provided with a liquid storage cavity and a ventilation channel. The ventilation channel comprises a first sub-channel and a second sub-channel, the first sub-channel comprises a throttling channel and a storage channel, the liquid storage cavity is communicated with the throttling channel, and the second sub-channel is communicated with the storage channel and the outside; the storage channel comprises an expansion section and a storage section, the two ends of the expansion section are respectively directly communicated with the throttling channel and the storage section, the minimum cross section size of the expansion section is larger than or equal to the cross section size of the throttling channel, and the storage section can store leaked liquid from the throttling channel; external gas can enter the liquid storage cavity through the second sub-channel, the storage channel and the throttling channel in sequence. Therefore, the manufacturing cost can be reduced and liquid leakage can be prevented on the basis of ensuring smooth ventilation of the atomizer.

Description

Atomizers and Electronic Atomizers

This application claims the priority of the Chinese patent application filed on October 28, 2020 with the application number 2020111732456 and the application name is "Atomizer and Electronic Atomizer", the entire contents of which are incorporated herein by reference middle.

technical field

The present application relates to the technical field of atomization, and in particular, to an atomizer and an electronic atomization device including the atomizer.

Background technique

There are dozens of carcinogens in the smoke of tobacco burning, such as tar, which will cause great harm to human health, and the smoke fills the air to form second-hand smoke, which will also cause harm to the body after inhalation by the surrounding people. Smoking is explicitly prohibited in most public places. Electronic atomization devices have similar appearance and taste to ordinary cigarettes, but usually do not contain other harmful components such as tar and suspended particles in cigarettes. Therefore, electronic atomization devices are generally used as substitutes for cigarettes.

Electronic atomizing devices include an atomizer for atomizing a liquid into a puffable aerosol. Generally, when the liquid in the liquid storage chamber of the atomizer is consumed by the atomizing core, a negative pressure will gradually be generated in the liquid storage chamber, which will affect the speed of supplying liquid to the atomizing core, that is, "slippery liquid" will occur. phenomenon, so that the atomizing core will cause dry burning due to the liquid consumption rate being greater than the supply rate. In order to avoid dry burning of the atomizing core, a ventilation channel connecting the outside and the atomization cavity is usually opened on the atomizer. When the liquid in the liquid storage cavity decreases, the external gas will enter the liquid storage cavity through the ventilation channel and enter the liquid storage cavity. Fill the space vacated by the consumed liquid to prevent the liquid storage chamber from being blocked and dry-burning caused by negative pressure.

However, for the conventional atomizer, either there are defects of high cost due to complicated structure and difficult assembly, or there are defects such as poor ventilation or leakage of liquid outside the atomizer.

SUMMARY OF THE INVENTION

A technical problem solved by the present application is how to reduce the manufacturing cost and prevent liquid leakage on the basis of ensuring smooth ventilation of the atomizer.

An atomizer, the atomizer is provided with a liquid storage cavity and a ventilation channel, the ventilation channel includes a first sub-channel and a second sub-channel, and the first sub-channel includes a throttle channel and a buffer channel , the liquid storage chamber communicates with the throttling channel, the second sub-channel communicates with the buffer channel and the outside world, the buffer channel includes an expansion section and a buffer section, and both ends of the expansion section are connected to the section respectively. The flow channel is in direct communication with the buffer section, the minimum cross-sectional size of the expansion section is greater than or equal to the cross-sectional size of the throttling channel, and the buffer section can store the leakage liquid from the throttling channel, ambient air The liquid storage chamber can be entered through the second sub-channel, the buffer channel and the throttling channel in sequence.

In one embodiment, the buffer segment is partially bounded by a first inner sidewall surface and a second inner sidewall surface, the first inner sidewall surface includes a low-lying unit surface directly connected to the second inner sidewall surface, and the first inner sidewall surface includes a low-lying unit surface directly connected to the second inner sidewall surface. The second inner sidewall surface is closer to the throttle channel than the low-lying unit surface, the second sub-channel penetrates the second inner sidewall surface and communicates with the buffer section, and the leakage liquid is stored in the buffer section by the Within the space bounded by the low-lying element faces. In this way, the buffer segment can have a certain storage capacity for the liquid.

In one embodiment, the expansion section is partially bounded by a downstream surface, the first inner sidewall surface further includes a flow guiding unit surface, and the flow guiding unit surface is connected to the downstream surface and the low-lying unit surface and the surface of the flow guiding unit is bent away from the expansion section, so that the maximum cross-sectional dimension of the buffer section is larger than the cross-sectional dimension of the expansion section. In this way, the time for the liquid to reach the low-lying unit surface can be prolonged, and the resistance along the path when the liquid is flowing can also be improved, thereby reducing the entry into the space defined by the low-lying unit surface in the buffer section per unit time.

In one embodiment, the flow guiding unit surface and the low-lying unit surface are on the same arc surface. In this way, the first inner side wall surface can be made more regular and easier to process, thereby reducing the manufacturing cost.

In one embodiment, the buffer channel is partially bounded by two first inner sidewall surfaces and two downstream surfaces, and the first inner sidewall surface and the downstream surface are connected to each other on one side of the second inner sidewall surface. It is recorded as the first whole, and the first inner wall surface and the downstream surface which are located on the other side of the second inner wall surface and connected to each other are recorded as the second whole, and the first whole and the second whole are related to the second inner side. The wall is symmetrically arranged. In this way, the entire buffer channel can be in a "full heart shape", which improves the storage capacity of the buffer channel for liquid.

In one embodiment, the number of the first sub-channels is multiple, and the throttling channel of the first sub-channel adjacent to the liquid storage chamber communicates with the liquid storage chamber; for two adjacent first sub-channels a sub-channel, wherein the throttling channel in one of the first sub-channels penetrates the second inner sidewall surface that defines the boundary of the other first sub-channel part; the second sub-channel penetrates the second sub-channel that defines the boundary of the adjacent first sub-channel part The second inner side wall surface. The plurality of first sub-channels can increase the liquid storage capacity of the ventilation channel.

In one of the embodiments, along the direction away from the throttling channel, the cross-sectional size of the expansion section gradually increases. This can reduce manufacturing costs.

In one embodiment, the throttle channel is partially bounded by the throttle inner bottom wall, the buffer channel is partially bounded by the buffer inner bottom wall, the buffer inner bottom wall and the throttle inner bottom The walls are spaced apart so that the depth of the buffer passage is greater than the depth of the throttle passage. On the one hand, the smoothness of the gas flow can be improved, and on the other hand, the storage capacity of the liquid in the buffer channel can be improved.

In one of the embodiments, the depth range of the throttle channel is 0.1 mm to 0.5 mm, and the depth range of the buffer channel is greater than or equal to 1 mm.

In one of the embodiments, the throttling channel is a straight channel. In this way, the throttling channel can be easily processed and the manufacturing cost can be reduced.

In one of the embodiments, the depth of the second sub-channel is smaller than the depth of the buffer channel. In this way, the liquid storage capacity in the buffer channel adjacent to the second sub-channel can be increased.

In one of the embodiments, the atomizer includes a housing assembly and an atomizing assembly housed in the housing assembly and used for atomizing liquid, and a ventilation groove is recessed on the outer surface of the atomizing assembly, The ventilation groove is covered by the housing assembly to form the ventilation passage. This can facilitate processing and reduce manufacturing costs.

In one embodiment, an air inlet channel directly communicated with the outside is opened on the housing assembly, and an atomization cavity and a shunt hole are also opened on the atomization assembly, and the atomization cavity is connected with the shunt hole and the shunt hole. The air inlet channel is directly communicated, and the outer surface of the atomization assembly includes a first surface and a second surface that are located in the thickness direction of the atomization assembly and face oppositely, and the first surface is provided with the flow divider. One end of the hole communicates with the ventilation groove, the second surface is provided with the ventilation groove communicated with the other end of the shunt hole, and the shunt hole is covered by the shell component to form a shunt channel, and the outside air It enters the ventilation channel through the air intake channel, the atomization chamber and the shunt channel in sequence. The number of ventilation channels can be increased to improve the smoothness of ventilation, and the storage capacity of the leakage liquid from the liquid storage chamber can be increased to avoid leakage of the leakage liquid to the outside of the atomizer.

In one embodiment, the number of the distribution holes is two, and the two distribution holes are located on opposite sides of the atomization chamber.

An electronic atomization device includes a power supply and the atomizer described in any one of the above, wherein the power supply is connected to the atomizer and provides electrical energy to the atomizer. By arranging the atomizer, the service life and use safety of the electronic atomizer device can be improved.

One technical effect of an embodiment of the present application is that, given that the minimum cross-sectional dimension of the expansion section is greater than or equal to the cross-sectional dimension of the throttling channel, under the action of the internal tension (cohesion) of the liquid itself, it is difficult for the liquid to change from the cross-sectional dimension The smaller throttling channel enters the expansion section with larger cross-sectional size, thereby slowing the flow rate of the liquid in the throttling channel, preventing the liquid in the throttling channel from entering the buffer channel quickly, thereby reducing the total amount of liquid in the liquid storage chamber per unit time. The amount of leakage can prevent the ventilation channel from leaking out of the entire atomizer due to the oversaturation of the stored liquid in a short time. At the same time, the flow rate of the gas entering the throttling channel with a smaller cross-sectional dimension from the expansion section with a larger cross-sectional dimension will increase significantly. Under the action of high-speed airflow, the liquid in the throttling channel will be quickly squeezed into the buffer. Therefore, the obstruction effect of the leakage liquid in the throttling channel on the airflow is eliminated, the resistance along the flow of the gas in the ventilation channel is reduced, and the smoothness of the ventilation of the atomizer is improved. Moreover, the structure of the entire ventilation channel is relatively simple, which can reduce the manufacturing cost of the entire atomizer.

Description of drawings

1 is a schematic three-dimensional structure diagram of an atomizer provided by an embodiment;

FIG. 2 is a schematic three-dimensional structure diagram of the atomizer shown in FIG. 1 from another viewing angle;

Fig. 3 is the partial three-dimensional sectional structure schematic diagram of the atomizer shown in Fig. 1;

Fig. 4 is the structural representation of atomization assembly in the atomizer shown in Fig. 1;

Fig. 5 is a three-dimensional cross-sectional structural schematic diagram of the atomizing assembly described in Fig. 4;

FIG. 6 is a schematic plan view of the sectional structure of the atomizing assembly described in FIG. 4;

Fig. 7 is the front view structure schematic diagram of the atomizing assembly described in Fig. 4;

8 is a schematic diagram of the flow trajectory of the gas entering the liquid storage chamber from the outside when it flows through the atomizing assembly;

9 is a schematic diagram of the flow trajectory of the liquid entering the ventilation channel from the liquid storage cavity;

FIG. 10 is a partial front structural schematic diagram of the atomizing assembly shown in FIG. 4 .

Detailed ways

In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the related drawings. The preferred embodiments of the present application are shown in the accompanying drawings. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the disclosure of this application is provided.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "inner", "outer", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Referring to FIGS. 1 , 2 and 3 , an embodiment of the present application provides an atomizer 10 including a housing assembly 400 and an atomization assembly 500 . The atomization assembly 500 is used to atomize an aerosol-generating substrate such as a liquid into a form that can be pumped by a user. For inhaling smoke, the atomizing assembly 500 is disposed inside the housing assembly 400 . The housing assembly 400 is provided with an air inlet passage 80 and a liquid storage chamber 20 , and the air inlet passage 80 is in direct communication with the outside world. The liquid storage chamber 20 is used to store the liquid that can be supplied to the atomizing assembly 500 .

4 and 5 , the outer surface of the atomizing assembly 500 includes a first surface 510 and a second surface 520 facing oppositely, and both the first surface 510 and the second surface 520 are spaced along the thickness direction of the atomizing assembly 500, The atomization assembly 500 is provided with a shunt hole 61 and an atomization cavity 70. The shunt hole 61 penetrates the first surface 510 and the second surface 520 at the same time. The first surface 510 is recessed along the thickness direction of the atomization assembly 500 to form a ventilation groove. 31. The ventilation groove 31 is communicated with the end of the shunt hole 61 close to the first surface 510; the ventilation groove 31 is also recessed on the second surface 520 along the thickness direction of the atomizing assembly 500, and the ventilation groove 31 is connected to the shunt. One end of the hole 61 close to the second surface 520 is connected, so one shunt hole 61 corresponds to two ventilation grooves 31 .

When the atomization assembly 500 is installed in the casing assembly 400, the casing assembly 400 covers and seals the openings of the ventilation groove 31 and the diversion hole 61, so that the ventilation groove 31 forms the ventilation channel 30, and the diversion The holes 61 form the shunt channel 60 . The outside air can enter the liquid storage chamber 20 through the air inlet channel 80 , the atomization chamber 70 , the distribution channel 60 and the ventilation channel 30 in sequence. When the liquid in the liquid storage chamber 20 is consumed and reduced by the atomizing assembly 500, the outside air will enter the liquid storage chamber 20 to fill the space vacated by the liquid consumption, thereby preventing the negative pressure of the liquid storage chamber 20 from affecting the fogging effect. The liquid supply speed of the atomizing assembly 500 can be prevented to prevent the dry burning phenomenon of the atomizing assembly 500 caused by the liquid consumption speed being higher than the supply speed.

Since one shunt hole 61 corresponds to two ventilation grooves 31 , one shunt channel 60 also corresponds to two ventilation channels 30 . The number of the distribution holes 61 may be two, and the two distribution holes 61 are located on opposite sides of the atomization chamber 70 . Therefore, when the number of the distribution passages 60 (the distribution holes 61 ) is two, the number of the ventilation passages 30 (the ventilation grooves 31 ) is four. Of course, the number of the distribution holes 61 may be one, and one distribution hole 61 may only correspond to one ventilation slot 31 .

In other embodiments, the ventilation groove 31 may be formed by only the inner surface of the housing assembly 400 being recessed, and may also be formed by simultaneously recessing the inner surface of the housing assembly 400 and the outer surface of the atomizer assembly 500 . The distribution hole 61 may be formed by only the inner surface of the housing assembly 400 being recessed, and may also be formed by simultaneously recessing the inner surface of the housing assembly 400 and the outer surface of the atomizing assembly 500 .

Referring to FIG. 3 , FIG. 4 and FIG. 5 , in some embodiments, the ventilation channel 30 includes a first sub-channel 40 and a second sub-channel 50 , and the first sub-channel 40 includes a throttle channel 200 and a buffer channel 300 . The channel 200 communicates with the liquid storage chamber 20 . The throttling channel 200 is formed by a part of the outer surface of the atomization assembly 500 which is recessed to a set depth. In other words, a part of the outer surface is recessed to form the throttling inner side wall surface 210 and the throttling inner bottom wall surface 220, and the throttling inner side wall surface 210 and the throttling inner wall surface 210. The bottom wall surface 220 defines part of the boundary of the throttle passage 200 . The number of the throttle inner side wall surface 210 is two, and the two throttle inner side wall surfaces 210 are oppositely arranged on both ends of the throttle inner bottom wall surface 220. The throttle channel 200 can be a linear channel, so that the throttle inner side wall surface 210 and the throttle body The inner bottom wall surfaces 220 are all flat surfaces, and the distance between the two throttle inner wall surfaces 210 can be defined as the cross-sectional dimension h of the throttle channel 200 (as shown in FIG. 10 ), and the cross-sectional dimension h of the throttle channel 200 can be equal everywhere.

The buffer channel 300 is formed by a part of the outer surface of the atomizing assembly 500 which is recessed to a set depth. In other words, a part of the outer surface is recessed to form the downstream surface 311 , the first inner side wall surface 321 , the second inner side wall surface 322 and the buffer inner bottom wall surface 323 . The edge of the buffer inner bottom wall surface 323 is connected and located on the same side of the buffer inner bottom wall surface 323. At this time, the downstream surface 311, the first inner wall surface 321, the second inner wall surface 322 and the buffer inner bottom wall surface 323 together define the buffer buffer. Part of the boundary of channel 300 . The buffer channel 300 includes an expansion section 310 and a buffer section 320 . The downstream surface 311 and the buffer inner bottom wall surface 323 define a part of the boundary of the expansion section 310 , and the first inner side wall surface 321 , the second inner side wall surface 322 and the buffer inner bottom wall surface 323 define the buffer section. 320 part border.

The downstream surface 311 may be a plane and the number is two, one of the downstream surface 311 intersects with the throttle inner side wall surface 210 at a predetermined angle, and the other downstream surface 311 intersects with the other throttle inner side wall surface 210 at a predetermined angle. angle. At this time, the distance between the two downstream surfaces 311 can be defined as the cross-sectional dimension H of the expansion section 310 (as shown in FIG. 10 ), and the minimum cross-sectional dimension H of the expansion section 310 is greater than or equal to the transverse dimension of the throttle passage 200 Section dimension h. For example, along the direction away from the throttling channel 200, the cross-sectional dimension H of the expansion section 310 gradually increases, and for the expansion section 310 and the throttling channel 200, the cross-sectional dimensions of the expansion section 310 and the throttling channel 200 are only equal at the point where they communicate with each other, and the expansion section The cross-sectional dimension H of other parts of 310 is larger than the cross-sectional dimension h of the throttle passage 200 . Of course, the cross-sectional dimension H of the expansion section 310 may be equal everywhere and larger than the cross-sectional dimension h of the throttle passage 200 .

The number of the first inner sidewall surfaces 321 may be two, the two first inner sidewall surfaces 321 are respectively connected with both ends of the second inner sidewall surface 322 , and the first inner sidewall surface 321 is connected between the downstream surface 311 and the second inner sidewall. The first inner sidewall surface 321 and the downstream surface 311 located on one side of the second inner sidewall surface 322 and connected to each other are recorded as a first whole, and the first inner sidewall surface 321 and the downstream surface 311 located on the other side of the second inner sidewall surface 322 and connected to each other Denoted as the second whole, the first and second wholes are spatially symmetrically distributed with respect to the second inner side wall surface 322 . Specifically, the first inner side wall surface 321 includes a diversion unit surface 321a and a low-lying unit surface 321b, the low-lying unit surface 321b is directly connected with the second inner side wall surface 322, and two ends of the diversion unit surface 321a are respectively connected to the low-lying unit surface 321b and downstream face 311 connection. The second inner sidewall surface 322 may be a plane, the low-lying unit surface 321b may be a curved surface, and the second inner sidewall surface 322 is closer to the throttle channel 200 than the low-lying unit surface 321b. The distance between the inner side wall surface 322 and the throttle channel 200 is smaller, and it can also be generally understood that the second inner side wall surface 322 is located above the low-lying unit surface 321b.

The diversion unit surface 321a may be a curved surface, and the diversion unit surface 321a is curved in a direction away from the expansion section 310, so that the maximum cross-sectional dimension of the buffer section 320 is larger than that of the expansion section 310, and the cross-sectional dimension of the buffer section 320 can be defined is the distance between the two first inner sidewall surfaces 321 . The flow guiding unit surface 321a and the low-lying unit surface 321b are on the same arc surface, in other words, the entire first inner side wall surface 321 is an arc surface.

Therefore, by arranging the flow guiding unit surface 321a and the low-lying unit surface 321b, and making the first and second wholes to be spatially symmetrically distributed with respect to the second inner side wall surface 322, the entire buffer channel 300 can be approximately in a "full heart shape".

In other embodiments, the downstream surface 311 may be a plane and the number is two, wherein one downstream surface 311 intersects with one of the throttle inner sidewall surfaces 210 at a set angle, and the other downstream surface 311 and the other throttle The inner sidewall surfaces 210 are coplanar, and the number of the first inner sidewall surfaces 321 is one. At this time, the entire buffer channel 300 is roughly in a "semi-heart shape".

4, 5 and 6 at the same time, in the thickness direction of the entire atomization assembly 500, the buffer inner bottom wall 323 and the throttle inner bottom wall 220 are arranged at intervals, and there is a certain distance D between them, so that the throttle The inner bottom wall surface 220 is closer to the outer surface of the atomizing assembly 500 than the buffer inner bottom wall surface 323 . In other words, the concave depth of the throttle inner bottom wall surface 220 is smaller than the concave depth of the buffer inner bottom wall surface 323 , so that the depth A of the buffer channel 300 is greater than the depth a of the throttle channel 200 . The depth a of the throttling channel 200 may range from 0.1 mm to 0.5 mm, for example, its specific value may be 0.1 mm, 0.3 mm, or 0.4 mm. The range of the depth A of the buffer channel 300 is greater than or equal to 1 mm, for example, the specific value may be 1 mm, 1.5 mm, or 2 mm.

Referring to FIG. 7 , for the same ventilation channel 30, when there are multiple first sub-channels 40, the multiple buffer channels 300 can be arranged in a straight line spaced along the vertical direction, and the throttle channels 200 can be located on the same straight line. Specifically, the throttle channel 200 in the first sub-channel 40 adjacent to the liquid storage chamber 20 communicates with the liquid storage chamber 20 . For two adjacent first sub-channels 40 , the throttle channel 200 in one of the first sub-channels 40 penetrates the second inner sidewall surface 322 , and the second inner sidewall surface 322 defines a part of the boundary of the other first sub-channel 40 . The second sub-channel 50 penetrates through the second inner sidewall surface 322 , and the second inner sidewall surface 322 defines a part of the boundary of the first sub-channel 40 adjacent to the second sub-channel 50 . Therefore, through the series connection of the throttle channels 200 , the buffer channels 300 arranged at intervals can be communicated with each other.

In some embodiments, the outer surface of the atomizing assembly 500 is recessed to a predetermined depth to form a zigzag groove, and the zigzag groove is covered by the housing assembly 400 to form the second sub-channel 50 , and the depth of the second sub-channel 50 may be the same as that of the throttle channel. The depths of 200 are equal, so that the depth of the second sub-channel 50 is smaller than the depth of the buffer channel 300 . For example, the depth of the second sub-channel 50 may range from 0.1 mm to 0.5 mm, for example, its specific value may be 0.1 mm, 0.3 mm, or 0.4 mm.

Referring to FIG. 8 , when the atomizer 10 is working, the liquid in the liquid storage chamber 20 is consumed by the atomizing assembly 500 and gradually decreases. At this time, the outside air can pass through the air inlet channel 80 , the atomizing chamber 70 and the shunt channel 60 in sequence. , the second sub-channel 50 and the first sub-channel 40 enter the liquid storage chamber 20 , so as to avoid the dry burning phenomenon caused by the negative pressure of the liquid storage chamber 20 .

Referring to FIG. 9 , when the atomizer 10 is resting and working, the liquid in the liquid storage chamber 20 will first enter the throttling channel 200 of the first first sub-channel 40 disposed adjacent to the liquid storage chamber 20 , Since the minimum cross-sectional dimension of the expansion section 310 is greater than or equal to the cross-sectional dimension of the throttling channel 200, under the action of the internal tension (cohesion) of the liquid itself, it is difficult for the liquid to enter the cross-section from the throttling channel 200 with a smaller cross-sectional dimension. The expansion section 310 with a larger size can slow down the flow rate of the liquid in the throttling channel 200 and prevent the liquid in the throttling channel 200 from entering the buffer channel 300 quickly, thereby reducing the total leakage of the liquid in the liquid storage chamber 20 per unit time. . In addition, when the liquid flows out of the throttle channel 200, the liquid will enter the low-lying unit surface 321b along the downstream surface 311 and the diversion unit surface 321a in sequence. Since the low-lying unit surface 321b is located below the second inner side wall surface 322, the buffer section 320 The space defined by the low-lying unit face 321b will serve as a buffer for the liquid. Considering that the diversion unit surface 321a is curved in the direction away from the expansion section 310, this increases the path for the liquid to enter the low-lying unit surface 321b from the downstream surface 311, thereby prolonging the time for the liquid to reach the low-lying unit surface 321b. Therefore, for the buffer segment 320 is a space defined by the low-lying cell face 321b, and the time required for the liquid stored in the space to reach a saturated state is prolonged.

When the liquid in the space defined by the low-lying unit surface 321b of the buffer section 320 is saturated, the liquid level in the space will be flush with the second inner side wall surface 322 . When the liquid continues to enter the space, the liquid in the space will enter the throttling channel 200 of the second first sub-channel 40 adjacent to the above-mentioned first first sub-channel 40 . Then it is stored in the space defined by the low-lying unit surface 321b of the second first sub-channel 40. When the supersaturated liquid in the space will enter the third first sub-channel 40 adjacent to the second first sub-channel 40 In the sub-channel 40 , and so on, when there is enough leakage liquid, the excess leakage liquid can flow into the last first sub-channel 40 adjacent to the second sub-channel 50 . If the liquid in the last first sub-channel 40 is still in a supersaturated state, the excess liquid can also flow into the second sub-channel 50 , the shunt channel 60 and the atomizing chamber 70 in sequence.

Generally, for a single-use atomizer 10, when the number of the first sub-channels 40 is large enough, the capacity of the plurality of buffer channels 300 will be large enough, and the large enough capacity will accommodate all the leakage liquid and prevent the leakage liquid from entering in the second sub-channel 50 , the shunt channel 60 or the atomization cavity 70 . When the leakage liquid from the liquid storage chamber 20 is too much and finally enters the atomization chamber 70 through the second sub-channel 50 and the shunt channel 60, considering that the atomization chamber 70 also has a considerable capacity to store the leakage liquid, the leakage can be avoided. The liquid overflows from the atomizing chamber 70 to the air inlet passage 80 and leaks out of the atomizer 10 , which ultimately prevents the atomizer 10 from leaking liquid. At the same time, in addition to the obstruction of the throttling channel 200 to the flow of the leakage liquid, during the entire process that the liquid in the atomizer 10 is consumed, the liquid in the liquid storage chamber 20 will be difficult to enter into the ventilation channel 30, that is, The amount of liquid leakage entering the buffer channel 300 is very small, so that the liquid leakage buffered in the buffer channel 300 is in an unsaturated state, and even the liquid leakage in the buffer channel 300 in the first sub-channel 40 is still in a non-saturated state In this way, another reliable line of defense is added for the leakage of liquid leakage from the air inlet channel 80 to the outside of the atomizer 10 .

Of course, when the atomizer 10 has a large proportion of the liquid to be atomized and the resting time is short, the leakage of liquid from the liquid storage chamber 20 will be significantly reduced, ensuring that the capacity of the buffer channel 300 is sufficient to accommodate the leakage liquid , to prevent leakage of liquid from the air intake passage 80 to the outside of the atomizer 10 . In fact, when the number of ventilation channels 30 is constant, that is, on the basis that the total number of buffer channels 300 is constant, the depth of the buffer channel 300 can be increased, and the depth of the throttle channel 200 and the second sub-channel 50 can be reduced. Therefore, the total capacity of the buffer channel 300 for leakage liquid is increased, and the leakage of the leakage liquid from the intake channel 80 to the outside of the atomizer 10 is further prevented.

When the atomizer 10 is working, when the outside air enters the liquid storage chamber 20 through the ventilation channel 30, since the second inner side wall surface 322 is higher than the liquid level of the leakage liquid stored in the buffer channel 300, the second The gas in the sub-channel 50 can directly enter the buffer channel 300 without the obstruction of liquid leakage. Next, since the cross-sectional dimension of the expansion section 310 is larger than that of the throttle passage 200, the flow velocity of the gas entering the throttle passage 200 from the expansion section 310 will increase significantly. The liquid will be quickly squeezed into the buffer channel 300 , thereby eliminating the obstruction of liquid leakage in the throttling channel 200 to the airflow, so that the gas can smoothly pass through each first sub-channel 40 and enter the liquid storage cavity 20 . It is ensured that the gas reaches the liquid storage chamber 20 quickly, and the smoothness of the ventilation of the atomizer 10 is improved.

In fact, when the depth of the throttling channel 200 is smaller, the frictional force generated by the leakage liquid in the throttling channel 200 is smaller, so that the leakage liquid is more likely to flow out of the throttling channel 200 under the action of the high-speed air flow, thereby reducing the amount of gas in the ventilation The resistance along the flow in the channel 30 improves the smoothness of the ventilation of the atomizer 10 . Therefore, increasing the depth of the buffer channel 300 and reducing the depth of the throttling channel 200 can not only increase the total capacity of the buffer channel 300 to leak liquid, prevent the leakage liquid from leaking outside the atomizer 10, but also reduce the amount of gas in the gas exchange. The resistance along the path in the air passage 30 can improve the smoothness of the ventilation of the atomizer 10 .

In addition, the structure of the entire ventilation channel 30 is relatively simple, which can reduce the manufacturing cost of the entire atomizer 10. Therefore, the ventilation channel 30 is set using the technical solutions of the above embodiments, which can ensure that the atomizer 10 is ventilated smoothly. On the basis of reducing manufacturing costs and preventing liquid leakage.

The present application also provides an electronic atomization device, the electronic atomization device includes an atomizer 10 and a power supply, and the atomizer 10 and the power supply are in a detachable connection relationship or an integral connection relationship. The power supply provides power to the atomizer 10 . Due to the arrangement of the above-mentioned atomizer 10, smooth ventilation can be ensured and manufacturing costs can be reduced, and at the same time, leakage of liquid outside the atomizer 10 can be prevented from entering the power supply and eroding it, thereby improving the service life of the power supply and the electronic atomization device. It can also eliminate the risk of explosion of the power supply due to erosion, and improve the safety of the power supply and the use of the electronic atomization device.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present application, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the appended claims.

Claims

An atomizer is provided with a liquid storage chamber and a ventilation channel, the ventilation channel includes a first sub-channel and a second sub-channel, the first sub-channel includes a throttle channel and a buffer channel, and the liquid storage channel The cavity communicates with the throttle channel, the second sub-channel communicates with the buffer channel and the outside world, the buffer channel includes an expansion section and a buffer section, and both ends of the expansion section are connected to the throttle channel and the buffer section respectively. The buffer section is directly connected, the minimum cross-sectional dimension of the expansion section is greater than or equal to the cross-sectional dimension of the throttling channel, the buffer section can store the leakage liquid from the throttling channel, and the outside air can pass through the The second sub-channel, the buffer channel and the throttling channel enter the liquid storage chamber.
The atomizer of claim 1, wherein the buffer segment is partially bounded by a first inner sidewall surface and a second inner sidewall surface, the first inner sidewall surface comprising a depression directly connected to the second inner sidewall surface The unit surface, the second inner side wall surface is closer to the throttling channel than the low-lying unit surface, the second sub-channel penetrates the second inner side wall surface and communicates with the buffer section, and the leakage liquid is stored in the within the space bounded by the low-lying cell face in the cache segment.
The atomizer according to claim 2, wherein the expansion section is partially bounded by a downstream surface, and the first inner side wall surface further comprises a flow guiding unit surface, and the flow guiding unit surface is connected to the downstream surface and the low-lying unit surface, and the flow guiding unit surface is bent away from the expansion section, so that the maximum cross-sectional dimension of the buffer section is larger than the cross-sectional dimension of the expansion section.
The atomizer according to claim 3, wherein the surface of the flow guiding unit and the surface of the low-lying unit are on the same arc surface.
The atomizer according to claim 3, wherein the buffer channel is partially bounded by two first inner sidewall surfaces and two downstream surfaces, and the first inner sidewall surface is located on one side of the second inner sidewall surface and is connected to each other. An inner side wall surface and a downstream surface are recorded as a first whole, and the first inner side wall surface and a downstream surface that are connected to each other on the other side of the second inner side wall surface are recorded as a second whole, the first whole and the second whole Symmetrically arranged with respect to the second inner side wall plane.
The atomizer according to claim 2, wherein the number of the first sub-channels is multiple, and the throttling channel of the first sub-channel adjacent to the liquid storage chamber communicates with the liquid storage chamber; Two adjacent first sub-channels, wherein the throttling channel in one of the first sub-channels penetrates the second inner side wall that defines the boundary of the other first sub-channel; the second sub-channel penetrates and defines the adjacent first sub-channel. A second inner sidewall surface bounding the subchannel portion.
The nebulizer of claim 1, wherein a cross-sectional dimension of the expansion section gradually increases in a direction away from the throttling passage.
The atomizer according to claim 1, wherein the throttle passage is partially bounded by the throttle inner bottom wall, the buffer passage is partially bounded by the buffer inner bottom wall, and the buffer inner bottom wall and The inner bottom walls of the throttle are arranged at intervals so that the depth of the buffer channel is greater than the depth of the throttle channel.
The atomizer according to claim 8, wherein a depth range of the throttle channel is 0.1 mm to 0.5 mm, and a depth range of the buffer channel is greater than or equal to 1 mm.
The atomizer according to claim 1, wherein the throttle channel is a straight channel.
The atomizer of claim 1, wherein the depth of the second sub-channel is less than the depth of the buffer channel.
The atomizer according to claim 1, comprising a housing component and an atomizing component housed in the housing component and used for atomizing liquid, wherein a ventilation groove is recessed on the outer surface of the atomizing component, so The ventilation groove is covered by the housing assembly to form the ventilation channel.
The atomizer according to claim 12, wherein an air inlet channel directly communicated with the outside is opened on the housing component, and an atomization cavity and a shunt hole are also opened on the atomization component, and the atomization cavity In direct communication with the flow distribution hole and the air inlet channel, the outer surface of the atomization assembly includes a first surface and a second surface that are located in the thickness direction of the atomization assembly and face oppositely, and the first surface is on the first surface. The ventilation groove communicated with one end of the shunt hole is opened, the ventilation groove communicated with the other end of the shunt hole is opened on the second surface, and the shunt hole is covered by the casing assembly. A shunt channel is formed, and the outside air enters the ventilation channel through the air inlet channel, the atomization cavity and the shunt channel in sequence.
The atomizer according to claim 13, wherein the number of the distribution holes is two, and the two distribution holes are located on opposite sides of the atomization cavity.
An electronic atomization device, comprising a power source and the atomizer according to any one of claims 1 to 14, the power source being connected to the atomizer and providing electrical energy to the atomizer.