CN117617588A - Atomizer and electronic atomization device - Google Patents

Abstract

The embodiment of the application provides an atomizer and electron atomizing device, wherein, the atomizer includes jet, housing assembly and atomizing core. The shell component is provided with an installation cavity; at least part of the structure of the atomizing core is arranged in the mounting cavity, the atomizing core is provided with an airflow channel and a negative pressure suction port, fluid in the airflow channel is sprayed out through the spray orifice, the airflow channel comprises a throat part, the negative pressure suction port is positioned at the downstream of the throat part along the flow direction of airflow in the airflow channel, and the airflow flowing along the airflow channel can be accelerated to at least sonic velocity after flowing through the throat part; the lateral wall of atomizing core and the lateral wall of installation cavity prescribe a limit to the accommodation space who is used for holding atomizing medium, accommodation space and negative pressure suction inlet intercommunication. The embodiment of the application provides an atomizer and electron atomizing device that atomization effect is good.

Description

Atomizer and electronic atomization device

Technical Field

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

Background

The atomization technology has wide application field and is applied to almost all industrial fields such as transportation, agricultural production, fuel combustion and the like. The atomizers in the related art mainly include a mechanical atomizing nozzle and a medium atomizing nozzle. The mechanical atomizing nozzle has higher pressure and difficult flow adjustment, the medium atomizing nozzle mainly comprises two types of gas-phase auxiliary atomization, namely, bubble atomization and pneumatic atomization, the bubble atomization utilizes the pressure difference between the inside and outside of the nozzle outlet, so that tiny bubbles rapidly expand and burst after leaving the outlet, a liquid film is crushed into liquid mist, the required gas-phase pressure is higher, but the gas consumption is smaller, the pneumatic atomization utilizes high-speed airflow to impact the liquid, the liquid is atomized, the gas consumption is larger, and the atomization quality is low and the energy consumption is high.

Disclosure of Invention

In view of this, it is desirable to provide an atomizer and an electronic atomization device with good atomization effect.

To achieve the above object, an embodiment of the present application provides an atomizer, including:

an ejection port;

a housing assembly provided with a mounting cavity;

the atomization core is at least partially structurally arranged in the installation cavity, the atomization core is provided with an airflow channel and a negative pressure suction port, fluid in the airflow channel is sprayed out through the spray opening, the airflow channel comprises a throat, the negative pressure suction port is positioned at the downstream of the throat along the flowing direction of the airflow in the airflow channel, and the airflow flowing along the airflow channel can be accelerated to at least sonic velocity after flowing through the throat;

the outer side wall of the atomizing core and the side wall of the mounting cavity define an accommodating space for accommodating atomizing media, and the accommodating space is communicated with the negative pressure suction port.

In one embodiment, the airflow passage includes a constriction, a first end of the constriction having a larger flow cross-sectional area than a second end of the constriction in the direction of flow of the airflow, the second end of the constriction being in communication with the throat.

In one embodiment, the airflow passage includes an expansion section having a first end with a smaller flow cross-sectional area than a second end of the expansion section along a flow direction of the airflow, the first end of the expansion section communicating to the throat.

In one embodiment, the airflow channel comprises an equal-diameter section, a first end of the equal-diameter section is communicated with a second end of the expansion section, a second end of the equal-diameter section is communicated with the injection port, the flow cross-sectional area of the equal-diameter section is larger than or equal to the flow cross-sectional area of the second end of the expansion section, and the negative pressure suction port is arranged on the equal-diameter section or the expansion section.

In one embodiment, the atomizer comprises a flow guide plug arranged on the constant diameter section, at least one first flow through groove is arranged on the outer side wall of the flow guide plug, the first flow through groove and the side wall of the airflow channel define an airflow channel, and the negative pressure suction port is positioned at the downstream of the air outlet of the airflow channel along the airflow direction.

In one embodiment, the atomizing core is formed with a mist outlet in communication with the air flow channel, the atomizer comprises a nozzle having the injection port, the nozzle is disposed at the mist outlet, the injection port is in communication with the mist outlet, and the nozzle, the deflector plug and the side wall of the air flow channel together define an atomizing cavity.

In one embodiment, the number of the through-flow channels is plural, and the plural through-flow channels are arranged at intervals along the circumferential direction of the flow guiding plug.

In one embodiment, the first overflow groove is obliquely arranged on the outer side wall of the flow guiding plug.

In one embodiment, the deflector plug includes a body and a deflector portion extending toward the throat, the deflector portion having a cross-sectional area that decreases in a direction toward the throat, the first flow-through groove being disposed in an outer sidewall of the body.

In one embodiment, the flow cross-sectional area of the constant diameter section is larger than the flow cross-sectional area of the second end of the expansion section, the air flow channel comprises a positioning surface for connecting the expansion section and the constant diameter section, and the flow guiding part is abutted to the positioning surface.

In one embodiment, the atomizer comprises a positioning piece, the atomization core is provided with a positioning hole along the radial direction, one end of the positioning piece is arranged in the positioning hole in a penetrating mode, and the other end of the positioning piece extends out of the airflow channel and is in butt joint with one end of the body, which is far away from the flow guiding part.

In one embodiment, the negative pressure suction opening is located at the air outlet of the flow passage.

In one embodiment, the number of the negative pressure suction openings is plural, and the plural negative pressure suction openings are arranged at intervals along the circumferential direction of the airflow passage side wall.

In one embodiment, the throat has a pore size of 0.3mm to 0.5mm.

In one embodiment, the housing assembly includes a housing formed with a mounting slot having a first opening at a bottom thereof and a bottom cover detachably disposed in the first opening and defining the mounting cavity with the housing.

In one embodiment, the atomizer comprises a liquid inlet channel, and the accommodating space is communicated with the negative pressure suction port through the liquid inlet channel.

In one embodiment, at least part of the liquid inlet channel is arranged on the atomizing core, the atomizing core comprises a main body with the air flow channel and at least one connecting rib arranged on the outer side wall of the main body, one end, away from the main body, of the connecting rib is abutted to the groove wall of the mounting groove, and the air flow channel and the connecting rib extend along the axial direction.

In one embodiment, the liquid inlet channel comprises a first sub-channel extending along the radial direction and a second sub-channel extending along the axial direction, the first sub-channel is arranged on the atomizing core, a first end of the first sub-channel is communicated with the negative pressure suction port, and a second end of the first sub-channel is communicated with the accommodating space through the second sub-channel.

In one embodiment, a second flow-through groove is arranged at one end of the connecting rib, which is far away from the main body, and the second flow-through groove and the groove wall of the mounting groove define the second sub-channel; alternatively, the connection rib forms the second sub-channel inside.

In one embodiment, the atomizer comprises a nozzle with the jet orifice, a second opening is formed in the top of the mounting cavity, the atomizing core is provided with a mist outlet communicated with the airflow channel, one end of the atomizing core, which is close to the mist outlet, extends out of the second opening and is connected with the nozzle, and the jet orifice is communicated with the mist outlet.

In one embodiment, the atomizer comprises a first sealing ring, a positioning ring table is arranged on the circumferential outer surface of one end, close to the mist outlet, of the atomizing core, and the first sealing ring is clamped between the positioning ring table and the top wall of the mounting groove in a sealing mode.

In one embodiment, the outer surface of the positioning ring table is provided with an air supplementing groove, the first sealing ring and the groove wall of the mounting groove jointly define an air supplementing channel, and the accommodating space is communicated with the outside through the air supplementing channel.

In one embodiment, the atomizer comprises a second sealing ring, an air supply port is formed in the bottom cover, an air inlet communicated with the air flow channel is formed in the atomizing core, the air inlet is in butt joint communication with the air supply port, and the second sealing ring is sealed and clamped between the surrounding part of the air supply port and the surrounding part of the air inlet.

In one embodiment, the bottom cover is formed with a protrusion, the second sealing ring is formed with a ring groove, the protrusion is clamped into the ring groove, the inner ring side wall of the second sealing ring is clamped between the protrusion and the atomizing core in a sealing manner, and the outer ring side wall of the second sealing ring is clamped between the protrusion and the wall of the mounting groove in a sealing manner.

The embodiment of the application provides an electronic atomization device, which comprises the atomizer disclosed in any embodiment of the application.

According to the atomizer provided by the embodiment of the application, negative pressure is generated through the flow of air flow in the air flow channel, so that an atomization medium enters the air flow channel through the negative pressure suction port under the action of the negative pressure. I.e. to create a negative pressure to draw in the nebulized medium by using the laval effect of the air flow channel. The airflow channel is provided with a throat part so that high-speed high-pressure airflow can be accelerated to sonic velocity after flowing through the throat part, and the atomization medium enters the airflow channel through the negative pressure suction port under the action of negative pressure because the negative pressure suction port is positioned at the downstream of the throat part along the flowing direction of airflow in the airflow channel, so that the atomization medium is accelerated to sonic velocity at the negative pressure suction port to impact and cut, and is atomized and dispersed into atomized liquid drops. In this way, by arranging the air flow channel with the throat, the air flow is accelerated to the sonic velocity after flowing through the throat, and then the atomized medium is impacted and cut, so that the atomization effect of the liquid is improved.

Drawings

FIG. 1 is a cross-sectional view of an atomizer according to an embodiment of the present application;

FIG. 2 is another perspective cross-sectional view of the atomizer shown in FIG. 1;

FIG. 3 is a cross-sectional view of the atomizing core of FIG. 2;

FIG. 4 is a schematic view of the atomizing core of FIG. 2;

FIG. 5 is a schematic view of a flow plug according to an embodiment of the present disclosure;

fig. 6 is a cross-sectional view of a housing assembly according to an embodiment of the present application.

Description of the reference numerals

10. An atomizing core; 10a, a fog outlet; 10b, an atomization cavity; 10c, positioning holes; 10d, an air inlet; 11. a main body; 11a, an air flow channel; 11b, negative pressure suction openings; 11c, throat; 11d, a contraction section; 11e, an expansion section; 11f, an equal diameter section; 11g, positioning surface; 12. a connection rib; 12a, a second overflow groove; 13. positioning a ring table; 13a, an air supplementing groove; 20. a housing assembly; 20a, a mounting cavity; 21. a housing; 21a, mounting slots; 21b, a first opening; 21c, a second opening; 22. a bottom cover; 22a, an air supply port; 22b, protrusions; 30. a deflector plug; 31. a body; 31a, a first overflow groove; 32. a flow guiding part; 40. a nozzle; 40a, jet ports; 50. a positioning piece; 60. a first seal ring; 70. a second seal ring; 70a, ring grooves; 100. an atomizer; 100a, an accommodating space; 100b, a flow-through channel; 100c, a liquid inlet channel; 100d, first sub-channel; 100e, a second sub-channel; 100f, an air supplementing channel.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and technical features in the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present application and should not be construed as undue limitation to the present application.

In the description of the embodiments of the present application, it should be noted that the terms "top," "bottom," and the like indicate an orientation or a positional relationship based on the orientation or positional relationship shown in fig. 1 and 2, where these orientation terms are merely for convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The present application will now be described in further detail with reference to the accompanying drawings and specific examples.

An embodiment of the present application provides an atomizer, referring to fig. 1 to 4, comprising an injection port 40a, a housing assembly 20, and an atomizing core 10.

Referring to fig. 1, 2 and 6, the housing assembly 20 is provided with a mounting cavity 20a, and at least a part of the structure of the atomizing core 10 is disposed in the mounting cavity 20a, that is, the atomizing core 10 may be disposed in the mounting cavity 20a of the housing assembly 20 or may be disposed entirely in the mounting cavity 20 a.

Referring to fig. 1 and 2, the outer side wall of the atomizing core 10 and the side wall of the mounting chamber 20a define an accommodating space 100a for accommodating an atomizing medium, and the accommodating space 100a communicates with the negative pressure suction port 11 b. That is, an accommodating space 100a is defined by the outer side wall of the atomizing core 10 and the side wall of the mounting chamber 20a, the atomizing medium is stored in the accommodating space 100a, and the accommodating space 100a communicates with the negative pressure suction port 11b, so that the atomizing medium enters the air flow channel 11a through the negative pressure suction port 11b under the negative pressure.

The fluid of the air flow passage 11a is ejected through the ejection port 40 a. That is, the air flow entering through the air inlet 10d of the air flow passage 11a, the atomized medium entering the air flow passage 11a through the negative pressure suction port 11b under the negative pressure, are converged in the air flow passage 11a and are ejected from the ejection port 40a together.

Referring to fig. 1 and 2, the atomizing core 10 has an airflow passage 11a and a negative pressure suction port 11b, the fluid of the airflow passage 11a is ejected through the ejection port 40a, the airflow passage 11a includes a throat portion 11c, the negative pressure suction port 11b is located downstream of the throat portion 11c in the flow direction of the airflow in the airflow passage 11a, and the airflow flowing along the airflow passage 11a can be accelerated to at least sonic velocity after flowing through the throat portion 11 c.

Referring to fig. 1 to 3, the negative pressure suction port 11b is located downstream of the throat portion 11c in the flow direction of the airflow in the airflow passage 11a, and thus the flow velocity of the throat portion 11c downstream in the flow direction of the airflow is relatively faster, the air pressure is smaller, so that a larger negative pressure is generated at the negative pressure suction port 11 b.

For example, in the course of the air flow flowing through the air flow passage 11a, a negative pressure is generated at the negative pressure suction port 11b based on the laval effect, and the atomized medium is sucked into the air flow passage 11a from the negative pressure suction port 11b under the negative pressure, so that the atomized medium is impacted and cut by the air flow accelerated to a sonic velocity at the negative pressure suction port 11b, so that the atomized medium is atomized and dispersed into atomized droplets, which are ejected from the ejection port 40 a.

The throat portion 11c is a portion of the airflow passage 11a where the cross section is smallest.

The air flow flowing along the air flow channel 11a can be accelerated at least to the sonic velocity after flowing through the throat 11c, that is, the air flow flowing along the air flow channel 11a can be accelerated to the sonic velocity or to the supersonic velocity after flowing through the throat 11 c.

Embodiments of the present application provide an electronic atomization device including an atomizer 100 of any of the embodiments of the present application.

The specific type of the electronic atomizing device is not limited herein, and the electronic atomizing device may be, for example, an electronic cigarette, a medical electronic atomizing device, or a cosmetic electronic atomizing device.

The particular type of nebulizing medium is not limited herein, and in one embodiment, the nebulizing medium may be, for example, an aerosol generating substrate when the nebulizer 100 is used in an electronic cigarette. In other embodiments, when nebulizer 100 is used in a medical electronic nebulization device, the nebulization medium may be, for example, saline, dexamethasone, terbutaline, or sardine, among others.

In the atomizer provided by the embodiment of the application, negative pressure is generated through the flow of air flow in the air flow channel 11a, so that an atomization medium enters the air flow channel 11a through the negative pressure suction port 11b under the action of the negative pressure. I.e. to create a negative pressure for inhalation of the nebulized medium by means of the laval effect of the air flow channel 11a. The airflow passage 11a is provided with a throat portion 11c so that high-speed high-pressure airflow can be accelerated to sonic velocity after flowing through the throat portion 11c, and since the negative pressure suction port 11b is located downstream of the throat portion 11c in the flow direction of the airflow in the airflow passage 11a, the atomizing medium enters the airflow passage 11a through the negative pressure suction port 11b under the action of negative pressure, and thus the atomizing medium is impacted and cut by the airflow accelerated to sonic velocity at the negative pressure suction port 11b, so that the atomizing medium is atomized and dispersed into atomized droplets. Thus, by providing the air flow passage 11a having the throat portion 11c, the air flow is accelerated to the sonic velocity through the throat portion 11c and then impinges on and cuts the atomized medium, improving the atomization effect of the liquid.

Mist droplets are understood to mean droplets of liquid in the form of particles. Illustratively, the diameter of the mist droplets may be no greater than 50 μm. This is just one example diameter of a mist of droplets.

It is to be understood that the high-speed and high-pressure air flow entering the air flow passage 11a from the air inlet 10d of the air flow passage 11a is subsonic.

It will be appreciated that the structural parameters of the throat 11c determine the flow rate, air pressure etc. of the air flow through the throat 11c, whereby the aperture of the throat 11c needs to be small enough, for example 0.2mm to 0.6mm, for example 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, in order to ensure that the air flow can be accelerated to at least sonic velocity after passing through the throat 11c.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the following description will briefly describe the laval effect, which proves: subsonic air flow is accelerated in the contracted section 11d and decelerated in the expanded section 11 e; whereas the supersonic flow is conversely decelerated in the constriction 11d and accelerated in the expansion 11 e. In the normal operation state, the subsonic air flow accelerates in the contraction section 11d, reaches the sonic velocity after flowing through the throat 11c, enters the expansion section 11e to become supersonic, and then continues to accelerate.

In one embodiment, referring to fig. 3, the airflow channel 11a includes a constriction 11d, and along the airflow direction, the flow cross-sectional area of a first end of the constriction 11d is larger than the flow cross-sectional area of a second end of the constriction 11d, and the second end of the constriction 11d is connected to the throat 11c. Illustratively, the flow cross-sectional area of the second end of the converging section 11d is greater than or equal to the flow cross-sectional area of the throat 11c.

Here, the air flow first flows through the constriction 11d and then through the throat 11c. Specifically, the air flow first flows through the first end of the constriction 11d and then enters the throat 11c through the second end of the constriction 11 d. Since the flow cross-sectional area of the first end of the constricted section 11d is larger than the flow cross-sectional area of the second end of the constricted section 11d, the airflow is accelerated and depressurized through the constricted section 11d and then enters the throat 11c, the flow velocity of the airflow in the throat 11c is larger than that of the airflow at the first end of the constricted section 11d, that is, the airflow is accelerated to a sonic velocity after flowing through the throat 11c, the air pressure of the airflow in the throat 11c is smaller than that of the airflow in the constricted section 11d, and the air pressure around the negative pressure suction port 11b is smaller, so that the atomized medium enters the airflow channel 11a through the negative pressure suction port 11b under the action of the negative pressure.

The flow cross section refers to a cross section orthogonal to all flow lines of the elementary stream or the total stream, that is, a plane perpendicular to a flow velocity cluster such as a gas stream or a liquid stream. When the streamline clusters are not parallel to each other, the flow section is a curved surface; when the flow clusters are straight lines parallel to each other, the flow cross section is a plane.

In one embodiment, referring to fig. 1 to 3, the flow cross-sectional area of the constriction 11d gradually decreases from the first end to the second end in the airflow direction. In this way, the airflow gradually increases in flow velocity and gradually decreases in air pressure in the contraction section 11d, and the air pressure is continuously variable, so that the turbulence of the airflow can be reduced.

In one embodiment, referring to fig. 1 to 3, the airflow channel 11a includes an expansion section 11e, and along the airflow direction, the flow cross-sectional area of a first end of the expansion section 11e is smaller than the flow cross-sectional area of a second end of the expansion section 11e, and the first end of the expansion section 11e is connected to the throat 11c. That is, the subsonic air flow is accelerated in the constricted section 11d, reaches sonic velocity after flowing through the throat 11c, and the air flow accelerated to sonic velocity enters the first end of the diverging section 11e from the throat 11c, enters the diverging section 11e, and is further accelerated to supersonic velocity.

Referring to fig. 1 to 3, the flow cross-sectional area of the expansion section 11e increases gradually from the first end to the second end in the airflow direction. In this way, the air flow in the expansion section 11e can be accelerated more stably, and the turbulence of the air flow can be reduced.

In one embodiment, referring to fig. 1 to 3, the air flow channel 11a includes a constant diameter section 11f, a first end of the constant diameter section 11f is communicated with a second end of the expansion section 11e, a second end of the constant diameter section 11f is communicated with the injection port 40a, and a flow cross-sectional area of the constant diameter section 11f is greater than or equal to a flow cross-sectional area of the second end of the expansion section 11 e. The air flow accelerated to the sonic velocity flows into the constant diameter section 11f from the second end of the expansion section 11e through the first end of the constant diameter section 11f, and the constant diameter section 11f can perform a rectifying function, so that the air flow keeps a higher flow velocity and a lower air pressure to flow smoothly.

In one embodiment, referring to fig. 1 to 3, the negative pressure suction port 11b is disposed on the constant diameter section 11f, and the airflow velocity of the constant diameter section 11f is relatively faster and the air pressure is smaller, so as to generate a larger negative pressure, so that the atomized medium enters the airflow channel 11a through the negative pressure suction port 11b under the negative pressure, and is impacted and cut by the airflow accelerated to the sonic velocity at the negative pressure suction port 11 b.

In other embodiments, the negative pressure suction port 11b is disposed in the expansion section 11e, and the airflow velocity of the expansion section 11e is relatively high, and the air pressure is low, so that a large negative pressure is generated, and therefore, the atomized medium enters the airflow channel 11a through the negative pressure suction port 11b under the negative pressure effect, and is impacted and cut by the airflow accelerated to the sonic velocity at the negative pressure suction port 11 b.

In an embodiment, referring to fig. 1, 2 and 5, the atomizer 100 includes a flow guide plug 30 disposed on the constant diameter section 11f, at least one first through-flow groove 31a is disposed on an outer side wall of the flow guide plug 30, the first through-flow groove 31a and a side wall of the airflow channel 11a define an airflow channel 100b, and the negative pressure suction port 11b is located downstream of an air outlet of the airflow channel 100b along the airflow direction. That is, the air flow in the air flow passage 11a on the side of the deflector plug 30 near the throat portion 11c flows through the first flow-through groove 31a and the flow passage 100b defined by the side wall of the air flow passage 11a to the air flow passage 11a on the side of the deflector plug 30 far from the throat portion 11 c.

Since the negative pressure suction port 11b is formed at the side wall of the airflow passage 11a, by providing the first flow-passing groove 31a at the outer side wall of the deflector plug 30, the first flow-passing groove 31a and the side wall of the airflow passage 11a define the flow-passing passage 100b, that is, the airflow can flow through the flow-passing passage 100b along the side wall of the airflow passage 11a, so that the atomized medium entering through the negative pressure suction port 11b can be directly impacted and cut, and in addition, the air pressure is increased after the airflow flows through the flow-passing passage 100b, thereby improving the atomization effect and atomization efficiency. In addition, the air flow is accelerated to supersonic speed after flowing through the contraction section 11d, the throat 11c and the expansion section 11e, and thus the air flow accelerated to supersonic speed can flow to the negative pressure suction port 11b to reach sonic speed, and the atomization effect and the atomization efficiency are further improved.

The number of the through-flow channels 100b is not limited, and may be one or a plurality, for example.

In one embodiment, the number of the through-flow channels 100b is plural, and the plural through-flow channels 100b are arranged at intervals along the circumferential direction of the deflector plug 30. For example, referring to fig. 5, the number of the through-flow passages 100b is 6, and the 6 through-flow passages 100b are uniformly arranged at intervals along the circumferential direction of the deflector plug 30. In this way, the plurality of through-flow channels 100b not only facilitate the airflow in the airflow channel 11a on the side of the deflector plug 30 close to the throat portion 11c to flow into the airflow channel 11a on the side of the deflector plug 30 away from the throat portion 11c in a larger amount, so as to increase the airflow rate and the spraying amount, but also avoid the situation that any one of the through-flow channels 100b is blocked to cause the airflow channel 11a to be blocked and unable to spray.

In the embodiment of the present application, the plurality of index numbers includes two and more than two.

Referring to fig. 5, the first flow-through groove 31a is disposed on the outer sidewall of the flow-guiding plug 30 in an inclined manner, and the flow-guiding plug 30 is illustratively a cyclone plug, that is, the flow-through channel 100b defined by the first flow-through groove 31a and the sidewall of the airflow channel 11a is an inclined flow channel, and the airflow forms a rotating airflow after flowing through the flow-through channel 100b of the cyclone plug, forming a gas-liquid two-phase annular flow with a certain pressure.

In one embodiment, referring to fig. 1 and 2, the atomizing core 10 is formed with a mist outlet 10a communicating with the air flow channel 11a, the atomizer 100 includes a nozzle 40 having an injection port 40a, the nozzle 40 is disposed at the mist outlet 10a, the injection port 40a communicates with the mist outlet 10a, and the nozzle 40, the deflector plug 30 and a sidewall of the air flow channel 11a together define an atomizing chamber 10b.

That is, the air flow can flow through the flow channel 100b along the side wall of the air flow channel 11a, that is, through the flow channel 100b, and enter the atomizing cavity 10b, so that the atomized medium entering through the negative pressure suction port 11b can be directly impacted and cut, so as to perform first atomization on the atomized medium and form atomized liquid drops, the atomized liquid drops after the first atomization form a gas-liquid two-phase annular flow in the atomizing cavity 10b, and the gas-liquid two-phase annular flow in the atomizing cavity 10b is sprayed out from the spraying port 40a of the nozzle 40, and the sprayed atomized liquid drops expand and break due to lower external air pressure, so that the second atomization on the atomized medium is realized, and the atomization effect is improved.

It can be appreciated that the second bubble atomization utilizes the remaining energy of the high-speed air flow after the first atomization of the atomized medium, thereby improving the atomization energy consumption ratio and saving the energy consumption. That is, the atomizer 100 of the embodiment of the application can realize airflow atomization and bubble atomization on an atomization medium, and after the first atomization (pneumatic atomization) is performed on the atomization medium, the second atomization (bubble atomization) on the atomization medium is realized under the condition that more energy is not increased, the pneumatic atomization and bubble atomization technology is efficiently combined through the atomizer 100 combining pneumatic atomization and bubble atomization, so that the particle size is more uniform, the atomization quality and the atomization efficiency are improved, the problems of low atomization quality, sensitivity to viscosity, excessive residual energy and more energy are solved.

In an embodiment, referring to fig. 1, 2 and 5, the deflector plug 30 includes a body 31 and a deflector portion 32 extending toward the throat 11c, the cross-sectional area of the deflector portion 32 decreases toward the throat 11c, and the first flow-through groove 31a is disposed on the outer side wall of the body 31. Wherein the cross-sectional area of the flow guide portion 32 decreases toward the direction approaching the throat portion 11c for guiding the flow of the air entering the flow passage 100b, so that turbulence of the air can be reduced.

The cross-sectional shape of the flow guiding portion 32 is not limited herein, and for example, the cross-sectional shape of the flow guiding portion 32 is triangular.

In an embodiment, referring to fig. 3, the flow cross-sectional area of the constant diameter section 11f is larger than the flow cross-sectional area of the second end of the expansion section 11e, the airflow channel 11a includes a positioning surface 11g connecting the expansion section 11e and the constant diameter section 11f, and the flow guiding portion 32 abuts against the positioning surface 11 g.

During assembly, the deflector plug 30 is inserted into the air flow channel 11a from the mist outlet 10a, and when the deflector portion 32 of the deflector plug 30 abuts against the positioning surface 11g, the deflector plug 30 is assembled in place, that is, the flow cross-sectional area of the constant diameter section 11f is larger than the flow cross-sectional area of the second end of the expansion section 11e, so that the positioning surface 11g is formed between the expansion section 11e and the constant diameter section 11f, assembly of the deflector plug 30 is facilitated, and meanwhile, reliability of the atomizer 100 is improved.

In an embodiment, referring to fig. 1 and 2, the atomizer 100 includes a positioning member 50, the atomizing core 10 is radially provided with a positioning hole 10c, one end of the positioning member 50 is disposed through the positioning hole 10c, and the other end extends out of the airflow channel 11a and abuts against one end of the body 31 away from the flow guiding portion 32. It will be appreciated that the positioning hole 10c is disposed along the radial direction of the atomizing core 10, and when the positioning member 50 is inserted into the positioning hole 10c, the other end of the positioning member 50 extends out of the positioning hole 10c and is exposed to the air flow channel 11a.

In this embodiment, the positioning member 50 has a better positioning effect on the deflector plug 30, prevents the deflector plug 30 from moving on any side of the air flow channel 11a in the length direction, and enables the deflector plug 30 to be accurately inserted into a correct position during the assembly process.

In one embodiment, referring to FIG. 1, the negative pressure suction port 11b is located at the air outlet of the flow passage 100 b. That is, the atomizing medium at the negative pressure suction port 11b can be directly impacted and cut while the air flow is flowing out through the air outlet of the flow channel 100b, improving the atomizing effect.

The number of the negative pressure suction ports 11b is not limited, and may be one or a plurality, for example.

In one embodiment, the number of negative pressure suction openings 11b is plural, and the plural negative pressure suction openings 11b are arranged at intervals in the circumferential direction of the side wall of the airflow passage 11 a. Illustratively, the number of negative pressure suction openings 11b is 3, and the 3 negative pressure suction openings 11b are uniformly arranged along the circumferential direction of the side wall of the airflow passage 11 a. In this way, the plurality of negative pressure suction ports 11b not only facilitate a larger amount of atomized medium to enter the airflow passage 11a to increase the amount of atomization, but also prevent the situation that any one of the negative pressure suction ports 11b is blocked to cause non-atomization.

In one embodiment, referring to fig. 1, 2 and 6, the housing assembly 20 includes a housing 21 and a bottom cover 22, the housing 21 is formed with a mounting groove 21a, a bottom of the mounting groove 21a is provided with a first opening 21b, and the bottom cover 22 is detachably disposed in the first opening 21b and defines a mounting cavity 20a together with the housing 21. That is, the bottom cover 22 is detachable from the housing 21.

The atomizing core 10 is detachably disposed in the mounting chamber 20a, that is, the atomizing core 10 can be removed after being placed in the mounting chamber 20 a.

That is, the housing 21 and the bottom cover 22 are two separate parts, and the housing 21 and the atomizing core 10 are two separate parts.

In some embodiments, the housing 21 and the bottom cover 22 are of unitary construction, e.g., integrally injection molded. The integrated shell 21 and bottom cover 22 can reduce the number of parts, reduce assembly time and improve assembly efficiency.

In one embodiment, referring to fig. 1, the atomizer 100 includes a liquid inlet passage 100c, and the accommodating space 100a communicates with the negative pressure suction port 11b through the liquid inlet passage 100 c. The atomized medium in the accommodating space 100a is sucked into the airflow passage 11a from the negative pressure suction port 11b via the liquid inlet passage 100c under the negative pressure.

That is, in the course of the air flow flowing through the air flow passage 11a, a negative pressure is generated at the negative pressure suction port 11b based on the laval effect, and the atomized medium is sucked into the air flow passage 11a from the negative pressure suction port 11b through the liquid inlet passage 100c under the negative pressure, so that the atomized medium is impacted and cut by the air flow accelerated to a sonic velocity at the negative pressure suction port 11b, so that the atomized medium is atomized and dispersed into atomized liquid droplets, which are ejected from the ejection port 40 a.

In one embodiment, at least a portion of the liquid inlet channel 100c is disposed on the atomizing core 10, that is, a portion of the liquid inlet channel 100c may be disposed on the atomizing core 10, or all of the liquid inlet channel 100c may be disposed on the atomizing core 10.

Referring to fig. 1, 2 and 4, the atomizing core 10 includes a main body 11 having an air flow channel 11a and at least one connecting rib 12 disposed on an outer sidewall of the main body 11, wherein an end of the connecting rib 12 away from the main body 11 is abutted against a groove wall of the mounting groove 21a, and the air flow channel 11a and the connecting rib 12 both extend in an axial direction, that is, the connecting rib 12 is disposed on the outer sidewall of the main body 11 and extends in the axial direction of the main body 11, and the connecting rib 12 is abutted against the groove wall of the mounting groove 21a, so that the connection stability of the main body 11 can be improved, that is, the stability of the air flow channel 11a can be improved, and radial play during use can be prevented.

The number of the connection ribs 12 is not limited, and may be one or a plurality, for example.

In one embodiment, the number of the connection ribs 12 is plural, and the plural connection ribs 12 are arranged at intervals along the circumferential direction of the side wall of the main body 11. For example, referring to fig. 4, the number of the connection ribs 12 is 3, and the 3 connection ribs 12 are uniformly arranged along the circumference of the sidewall of the body 11. In this way, the plurality of connection ribs 12 are abutted against the groove wall of the mounting groove 21a, further improving the stability of the air flow passage 11 a.

Illustratively, the atomizing core 10 is of unitary construction, i.e., the body 11 is of unitary construction with the connecting ribs 12. Of course, the main body 11 and the connection rib 12 may be of a separate structure.

In one embodiment, referring to fig. 1, the liquid inlet channel 100c includes a first sub-channel 100d extending along a radial direction and a second sub-channel 100e extending along an axial direction, the first sub-channel 100d is disposed on the atomizing core 10, a first end of the first sub-channel 100d is in communication with the negative pressure suction port 11b, and a second end of the first sub-channel 100d is in communication with the accommodating space 100a through the second sub-channel 100 e. It will be appreciated that since the air flow passage 11a extends in the axial direction, i.e., the air flow passage 11a extends in the longitudinal direction, and the outer side wall of the atomizing core 10 and the side wall of the mounting chamber 20a define the accommodating space 100a for accommodating the atomizing medium, i.e., the accommodating space 100a also extends in the longitudinal direction, the second sub-passage 100e extends in the axial direction for communicating the second end of the first sub-passage 100d with the accommodating space 100a in order to facilitate the extraction of the atomizing medium at the bottom of the accommodating space 100a. That is, by providing the second sub-passage 100e to extend in the axial direction, the atomized medium in the accommodating space 100a can be extracted as completely as possible, and the utilization rate of the atomized medium can be improved.

The first sub-passage 100d extends in a radial direction, and the first sub-passage 100d is disposed on the atomizing core 10. Referring to fig. 1, for example, the first sub-passage 100d extends in a radial direction and penetrates the main body 11 and the connection rib 12 such that a first end of the first sub-passage 100d communicates with the negative pressure suction port 11b and a second end of the first sub-passage 100d communicates with the second sub-passage 100e.

In an embodiment, referring to fig. 1 and 4, a second through-flow groove 12a is disposed at an end of the connecting rib 12 away from the main body 11, and the second through-flow groove 12a and a groove wall of the mounting groove 21a define a second sub-channel 100e. That is, the second sub-channel 100e is formed between the second flow-through groove 12a and the groove wall of the installation groove 21a, and the atomized medium can flow from the second sub-channel 100e between the second flow-through groove 12a and the groove wall of the installation groove 21a to the first sub-channel 100d under the action of the negative pressure.

The second flow-through groove 12a disposed at one end of the connecting rib 12 far from the main body 11 is a micro groove, so that a second sub-channel 100e formed by surrounding between the second flow-through groove 12a and the groove wall of the mounting groove 21a is a capillary liquid supply channel, that is, the liquid inlet channel 100c is a capillary liquid supply channel, so as to ensure that the atomized medium can flow from the second sub-channel 100e between the second flow-through groove 12a and the groove wall of the mounting groove 21a to the first sub-channel 100d under the action of negative pressure.

In other embodiments, the connecting rib 12 internally forms a second sub-channel 100e. That is, the second sub-channel 100e is directly formed inside the connection rib 12, and the second through-flow groove 12a does not need to be formed.

In one embodiment, referring to fig. 1 to 4, the top of the mounting cavity 20a has a second opening 21c, and one end of the atomizing core 10 near the mist outlet 10a extends from the second opening 21c and is connected to the nozzle 40.

That is, the nozzle 40 and the atomizing core 10 described above are two separate components.

In other embodiments, the nozzle 40 and the atomizing core 10 are of unitary construction, such as, for example, integrally injection molded. The integrated nozzle 40 and atomizing core 10 can reduce the number of parts, reduce the assembly time, improve the assembly efficiency, and in addition, can integrate the injection port 40a on the atomizing core 10. In this way, the atomizer 100 is more compact.

In still other embodiments, the nozzle 40 and the housing 21 are of unitary construction, such as, for example, integrally injection molded. The integrated nozzle 40 and housing 21 can reduce the number of parts, reduce the assembly time, and improve the assembly efficiency.

In an embodiment, referring to fig. 1 to 4, the atomizer 100 includes a first sealing ring 60, a positioning ring table 13 is disposed on a circumferential outer surface of one end of the atomizing core 10 near the mist outlet 10a, and the first sealing ring 60 is sealed and clamped between the positioning ring table 13 and a top wall of the mounting groove 21 a. When the first seal ring 60 is assembled, the first seal ring 60 is assembled on the positioning ring table 13, or the first seal ring 60 is assembled on the top wall of the mounting groove 21a, the atomization core 10 is inserted into the mounting groove 21a from the first opening 21b, and when the positioning ring table 13 or the first seal ring 60 is abutted against the top wall of the mounting groove 21a, the first seal ring 60 is assembled in place.

The first sealing ring 60 is clamped between the positioning ring table 13 and the top wall of the mounting groove 21a in a sealing manner, the sealing performance of the atomizing core 10 and the groove wall of the mounting groove 21a can be enhanced by the first sealing ring 60, and the probability that fluid in the accommodating space 100a flows out along a gap between the atomizing core 10 and the groove wall of the mounting groove 21a is reduced.

In one embodiment, the end of the connecting rib 12 is connected with the positioning ring table 13, further improving the structural strength of the atomizing core 10.

Referring to fig. 1 and 4, the outer surface of the positioning ring table 13 is provided with an air supplementing groove 13a, the first sealing ring 60 and the groove wall of the mounting groove 21a together define an air supplementing channel 100f, and the accommodating space 100a is communicated with the outside through the air supplementing channel 100 f. Specifically, the air supply passage 100f communicates the accommodating space 100a with the outside atmosphere for supplying air in the accommodating space 100a, maintaining the air pressure balance inside the accommodating space 100a, and the air of the outside atmosphere can enter the accommodating space 100a through the air supply passage 100f, so that atomization of the atomizing medium in the accommodating space 100a is continuously achieved.

It is understood that the external air can enter the accommodating space 100a through the air supplementing passage 100f, and the atomized medium in the accommodating space 100a cannot flow out to the outside through the air supplementing passage 100 f. Specifically, the atomized medium in the accommodating space 100a cannot flow out to the outside under the surface tension of the liquid substance.

In one embodiment, referring to fig. 1, 2 and 6, the atomizer 100 includes a second sealing ring 70, the bottom cover 22 is formed with an air supply port 22a, the atomizing core 10 is formed with an air inlet 10d communicating with the air flow channel 11a, the air inlet 10d is in butt-joint communication with the air supply port 22a, and the second sealing ring 70 is sealed and clamped between the surrounding part of the air supply port 22a and the surrounding part of the air inlet 10 d. Since the air pressure of the air flow from the air supply port 22a is relatively high, the high-pressure air flow is liable to leak from the fitting gap between the peripheral portion of the air supply port 22a and the peripheral portion of the air intake port 10d, so that the negative pressure is hard to generate in the air flow passage 11a, and therefore the fitting gap between the peripheral portion of the air supply port 22a and the peripheral portion of the air intake port 10d is sealed by the second seal ring 70, avoiding air leakage therefrom.

The second seal ring 70 is sealed and clamped between the surrounding part of the air supply port 22a and the surrounding part of the air inlet 10d, the second seal ring 70 can strengthen the sealing performance of the atomizing core 10 and the bottom cover 22, reduce the probability that the fluid in the accommodating space 100a flows out along the gap between the atomizing core 10 and the bottom cover 22, and reduce the probability that the air flow in the air flow channel 11a flows out through the assembly gap between the surrounding part of the air supply port 22a and the surrounding part of the air inlet 10 d.

In an embodiment, referring to fig. 1, 2 and 6, the bottom cover 22 is formed with a protrusion 22b, the second seal ring 70 is formed with a ring groove 70a, the protrusion 22b is clamped into the ring groove 70a, the inner side wall of the second seal ring 70 is clamped between the protrusion 22b and the atomizing core 10, and the outer side wall of the first seal ring 60 is clamped between the protrusion 22b and the wall of the mounting groove 21 a. The second sealing ring 70 is formed with a ring groove 70a, so that the protrusion 22b of the bottom cover 22 is clamped into the ring groove 70a, thereby facilitating positioning and mounting of the second sealing ring 70 and avoiding displacement of the second sealing ring 70. The inner ring side wall of the second sealing ring 70 is clamped between the protrusion 22b and the atomization core 10, and meanwhile, the outer ring side wall of the second sealing ring 70 is clamped between the protrusion 22b and the groove wall of the mounting groove 21a, so that the probability that fluid in the accommodating space 100a flows out along the gap between the outer shell 21 and the bottom cover 22 is reduced. Namely, the second seal ring 70 can simultaneously increase the sealability between the bottom cover 22 and the housing 21 and between the bottom cover 22 and the atomizing core 10.

During assembly, the first sealing ring 60 is assembled to the outer ring of the atomizing core 10, then the atomizing core 10 assembled with the first sealing ring 60 is inserted into the mounting groove 21a of the housing 21, an atomizing medium is injected, then the second sealing ring 70 is assembled to the bottom cover 22, a bottom cover 22 assembly is formed, the bottom cover 22 assembly is covered at the first opening 21b, and then the nozzle 40 is assembled, so that the assembly of the atomizer 100 is completed.

In the description of the present application, reference to the terms "one embodiment," "some embodiments," "other embodiments," "still other embodiments," or "exemplary" and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present application. In this application, the schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples described herein, as well as the features of the various embodiments or examples, may be combined by those skilled in the art without contradiction.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application are included in the protection scope of the present application.

Claims (23)

1. An atomizer, the atomizer comprising:

an injection port (40 a);

-a housing assembly (20), the housing assembly (20) being provided with a mounting cavity (20 a);

an atomizing core (10) at least partially structured in the installation cavity (20 a), the atomizing core (10) having an airflow passage (11 a) and a negative pressure suction port (11 b), the fluid of the airflow passage (11 a) being ejected through the ejection port (40 a), the airflow passage (11 a) including a throat portion (11 c), the negative pressure suction port (11 b) being located downstream of the throat portion (11 c) in the flow direction of the airflow in the airflow passage (11 a), the airflow flowing along the airflow passage (11 a) being able to be accelerated at least to a sonic velocity after flowing through the throat portion (11 c);

wherein, the outer side wall of the atomizing core (10) and the side wall of the mounting cavity (20 a) define a containing space (100 a) for containing atomizing media, and the containing space (100 a) is communicated with the negative pressure suction port (11 b).

2. The atomizer according to claim 1, characterized in that the air flow channel (11 a) comprises a constriction (11 d), the flow cross-sectional area of a first end of the constriction (11 d) being larger than the flow cross-sectional area of a second end of the constriction (11 d) in the flow direction of the air flow, the second end of the constriction (11 d) being connected to the throat (11 c).

3. The atomizer according to claim 2, wherein the air flow channel (11 a) comprises an expansion section (11 e), the flow cross-sectional area of a first end of the expansion section (11 e) being smaller than the flow cross-sectional area of a second end of the expansion section (11 e) in the flow direction of the air flow, the first end of the expansion section (11 e) being in communication with the throat (11 c).

4. A nebulizer according to claim 3, characterized in that the air flow passage (11 a) comprises a constant diameter section (11 f), a first end of the constant diameter section (11 f) being in communication with a second end of the expansion section (11 e), a second end of the constant diameter section (11 f) being in communication with the injection orifice (40 a), a flow cross-sectional area of the constant diameter section (11 f) being greater than or equal to a flow cross-sectional area of the second end of the expansion section (11 e), the negative pressure suction opening (11 b) being provided in the constant diameter section (11 f) or the expansion section (11 e).

5. The atomizer according to claim 4, characterized in that it comprises a deflector plug (30) provided to the constant diameter section (11 f), the outer lateral wall of the deflector plug (30) being provided with at least one first flow-through groove (31 a), the first flow-through groove (31 a) defining with the lateral wall of the air flow channel (11 a) an air flow channel (100 b), the negative pressure suction opening (11 b) being located downstream of the air outlet of the air flow channel (100 b) in the air flow direction.

6. The atomizer according to claim 5, wherein the atomizing core (10) is formed with a mist outlet (10 a) communicating with the air flow passage (11 a), the atomizer comprising a nozzle (40) having the spray opening (40 a), the nozzle (40) being provided at the mist outlet (10 a), the spray opening (40 a) communicating with the mist outlet (10 a), the nozzle (40) defining an atomizing chamber (10 b) together with the deflector plug (30) and a side wall of the air flow passage (11 a).

7. The atomizer according to claim 5, wherein the number of the through-flow passages (100 b) is plural, and the plurality of through-flow passages (100 b) are arranged at intervals along the circumference of the deflector plug (30); and/or the number of the groups of groups,

the first overflow groove (31 a) is obliquely arranged on the outer side wall of the flow guide plug (30).

8. The atomizer according to claim 5, wherein the deflector plug (30) comprises a body (31) and a deflector (32) extending towards the throat (11 c), the deflector (32) decreasing in cross-sectional area towards the throat (11 c), the first flow-through groove (31 a) being provided in an outer side wall of the body (31).

9. The atomizer according to claim 8, wherein the constant diameter section (11 f) has a larger flow cross-sectional area than the second end of the expansion section (11 e), the air flow passage (11 a) comprises a positioning surface (11 g) connecting the expansion section (11 e) and the constant diameter section (11 f), and the flow guide (32) abuts the positioning surface (11 g).

10. The atomizer according to claim 8, characterized in that the atomizer comprises a positioning member (50), wherein the atomizing core (10) is radially provided with a positioning hole (10 c), one end of the positioning member (50) is arranged in the positioning hole (10 c) in a penetrating manner, and the other end of the positioning member extends out of the air flow channel (11 a) and is abutted with one end of the body (31) away from the flow guiding part (32).

11. Nebulizer according to claim 5, characterized in that the negative pressure suction opening (11 b) is located at the air outlet of the flow-through channel (100 b).

12. The atomizer according to claim 1, wherein the number of negative pressure suction openings (11 b) is plural, and a plurality of the negative pressure suction openings (11 b) are arranged at intervals along the circumferential direction of the side wall of the airflow passage (11 a); and/or the number of the groups of groups,

the aperture of the throat (11 c) is 0.3mm-0.5mm.

13. The nebulizer of any one of claims 1 to 12, wherein the housing assembly (20) comprises a housing (21) and a bottom cover (22), the housing (21) being formed with a mounting groove (21 a), a bottom of the mounting groove (21 a) having a first opening (21 b), the bottom cover (22) being detachably arranged to the first opening (21 b) and defining the mounting cavity (20 a) together with the housing (21).

14. The nebulizer of claim 13, comprising a liquid inlet channel (100 c), the accommodation space (100 a) being in communication with the negative pressure suction opening (11 b) via the liquid inlet channel (100 c).

15. The atomizer according to claim 14, wherein at least part of the liquid inlet channel (100 c) is provided on the atomizing core (10), the atomizing core (10) comprising a main body (11) having the air flow channel (11 a) and at least one connecting rib (12) provided on an outer side wall of the main body (11), an end of the connecting rib (12) remote from the main body (11) being in abutment with a groove wall of the mounting groove (21 a), the air flow channel (11 a) and the connecting rib (12) each extending in an axial direction.

16. The atomizer according to claim 15, wherein the liquid inlet channel (100 c) comprises a first sub-channel (100 d) extending in a radial direction and a second sub-channel (100 e) extending in an axial direction, the first sub-channel (100 d) being arranged on the atomizing core (10), a first end of the first sub-channel (100 d) being in communication with the negative pressure suction opening (11 b), a second end of the first sub-channel (100 d) being in communication with the receiving space (100 a) via the second sub-channel (100 e).

17. The atomizer according to claim 16, wherein the end of the connecting rib (12) remote from the main body (11) is provided with a second flow channel (12 a), the second flow channel (12 a) defining the second sub-channel (100 e) with the wall of the mounting channel (21 a); alternatively, the connection rib (12) internally forms the second sub-channel (100 e).

18. The atomizer according to claim 13, characterized in that the atomizer comprises a nozzle (40) having the spray opening (40 a), the top of the mounting cavity (20 a) has a second opening (21 c), the atomizing core (10) is formed with a mist outlet (10 a) communicating with the air flow channel (11 a), the atomizing core (10) protrudes from the second opening (21 c) near one end of the mist outlet (10 a) and is connected with the nozzle (40), the spray opening (40 a) communicates with the mist outlet (10 a).

19. The atomizer according to claim 18, characterized in that the atomizer comprises a first sealing ring (60), a positioning ring table (13) is arranged on the circumferential outer surface of the atomizing core (10) near one end of the atomizing outlet (10 a), and the first sealing ring (60) is sealed and clamped between the positioning ring table (13) and the top wall of the mounting groove (21 a).

20. The atomizer according to claim 19, wherein the outer surface of the positioning ring (13) is provided with a gas-filling groove (13 a), the gas-filling groove (13 a) and the first sealing ring (60) and the groove wall of the mounting groove (21 a) together define a gas-filling channel (100 f), and the accommodation space (100 a) communicates with the outside through the gas-filling channel (100 f).

21. The atomizer according to claim 13, characterized in that the atomizer comprises a second sealing ring (70), the bottom cover (22) is formed with an air supply port (22 a), the atomizing core (10) is formed with an air inlet (10 d) communicated with the air flow channel (11 a), the air inlet (10 d) and the air supply port (22 a) are in butt joint communication, and the second sealing ring (70) is sealed and clamped between the surrounding part of the air supply port (22 a) and the surrounding part of the air inlet (10 d).

22. The atomizer according to claim 21, wherein the bottom cover (22) is formed with a protrusion (22 b), the second sealing ring (70) is formed with a ring groove (70 a), the protrusion (22 b) is clamped into the ring groove (70 a), an inner ring side wall of the second sealing ring (70) is sealingly clamped between the protrusion (22 b) and the atomizing core (10), and an outer ring side wall of the second sealing ring (70) is sealingly clamped between the protrusion (22 b) and a wall of the mounting groove (21 a).

23. An electronic atomising device comprising an atomiser according to any one of claims 1 to 22.