An atomizer and an electronic atomization device

Abstract

The present application discloses an atomizer and an electronic atomization device. The atomizer includes: a housing having a liquid storage cavity for storing liquid therein; an atomization base with a liquid supply channel formed therein and communicating with the liquid storage cavity; a heating element fixed on the atomization base and having a liquid absorption surface communicating with the liquid supply channel; a liquid locking member having a liquid locking opening communicating with the liquid supply channel and a liquid locking space communicating with the liquid absorption surface; the liquid locking opening and the liquid locking space are in communication. By providing a liquid locking member with a liquid locking space above the liquid absorption surface of the heating element and providing a liquid locking opening communicating with the liquid supply channel on the liquid locking member, when the atomizer is inverted, the size of the liquid locking opening is adapted to cut off the liquid connection at the liquid locking opening, thereby locking the liquid in the liquid locking space, and the liquid absorption surface of the heating element can absorb the liquid in the liquid locking space, avoiding the problems of the heating element dry burning to produce a burnt smell or even burning out the heating element on the heating element.

Description

Technical Field

[0001] This application relates to the technical field of atomization devices, and particularly relates to an atomizer and an electronic atomization device. Background Art

[0002] An electronic atomization device generally includes an atomizer, a battery, and a control circuit. The atomizer includes a liquid storage chamber, a heating element, an atomization base, etc. The heating element is fixed on the atomization base, and the atomization base is provided with a liquid inlet channel. The liquid in the liquid storage chamber reaches the heating element through the liquid inlet channel. The heating element is generally arranged below the liquid storage chamber. During normal suction, the liquid flows to the heating element under the action of gravity. However, if the user lies down or raises their head to suck, the heating element is located above the liquid storage chamber, and the liquid cannot be supplied, resulting in dry burning of the heating element, generating a burnt smell, and even burning out the heating element on the heating element. Therefore, improvement is needed.

[0003] Content of the Application

[0004] Therefore, the technical problem to be solved by this application is to overcome the defect that the atomizer in the prior art is prone to generate a burnt smell or even burn out the heating element on the heating element due to insufficient liquid supply during inverted suction, so as to provide an atomizer.

[0005] To solve the above technical problem, the technical solution of this application is as follows:

[0006] An atomizer, comprising:

[0007] A housing having a liquid storage cavity inside;

[0008] An atomization base having a liquid supply channel communicated with the liquid storage cavity inside;

[0009] A heating element fixed on the atomization base and having a liquid suction surface communicated with the liquid supply channel;

[0010] A liquid locking member located between the liquid supply channel and the liquid suction surface of the heating element, having a liquid locking opening communicated with the liquid supply channel and a liquid locking space communicated with the liquid suction surface; the liquid locking opening and the liquid locking space are communicated.

[0011] Further, the size of the liquid locking opening is adapted to cut off the liquid connection in the liquid locking opening when the housing is tilted or inverted.

[0012] Further, the width range of the liquid locking opening is 0.4 - 1.5 mm.

[0013] Further, the liquid locking member includes two long side walls and two short side walls that enclose a frame shape. An upper top wall is connected between the two long side walls. There is a gap between the upper top wall and the liquid absorption surface of the heating element. The opening formed by enclosing between the upper top wall, the short side walls, and the two long side walls is the liquid locking opening. The distance between the upper top wall and the short side walls is the width of the liquid locking opening. The space formed between the upper top wall and the liquid absorption surface of the heating element is the liquid locking space.

[0014] Further, an exhaust hole communicating with the liquid locking space is formed on the upper top wall.

[0015] Further, the diameter of the exhaust hole is 0.8 - 1.5 mm.

[0016] Further, the distance between the inner top surface of the upper top wall and the liquid absorption surface is 0.5 - 1.5 mm.

[0017] Further, a flow blocking groove is provided on the inner top surface of the upper top wall. The flow blocking groove has a top opening and an end opening. The top opening faces the liquid absorption surface of the heating element, and the end opening communicates with the liquid locking opening.

[0018] Further, the groove width of the flow blocking groove is 0.2 - 0.5 mm, and the groove depth of the flow blocking groove is 0.1 - 0.5 mm.

[0019] Further, the liquid locking member is fixedly connected to the atomizing seat through a snap structure.

[0020] Further, the heating element includes a sheet-shaped substrate and a heating element provided on the surface of the substrate. The thickness of the substrate is 0.1 - 3.0 mm.

[0021] Further, the heating element is provided on the atomizing surface of the substrate. The liquid absorption surface is the other surface of the substrate facing away from the atomizing surface. The substrate is provided with a liquid absorption channel that penetrates the liquid absorption surface and the atomizing surface.

[0022] Further, the liquid absorption channel is a pore channel, and the pore diameter of the pore channel is 1 - 100 μm.

[0023] Further, the atomizing seat includes an upper atomizing seat and a lower atomizing seat. The lower atomizing seat is hermetically connected to the open end of the housing. The upper atomizing seat is connected to the side of the lower atomizing seat facing the liquid storage cavity. The liquid supply channel is provided on the lower atomizing seat. The inside of the lower atomizing seat has an atomizing cavity. The lower atomizing seat is provided with an air inlet for external gas to enter the atomizing cavity. The heating element is located between the upper atomizing seat and the lower atomizing seat, and the atomizing surface of the heating element communicates with the atomizing cavity.

[0024] Further, a gas guide tube extending into the liquid storage cavity and connected to the upper atomization seat is connected to the closed end of the housing, and an atomizing gas passage communicating the gas guide tube and the atomization cavity is provided on the upper atomization seat.

[0025] Further, the heating element is hermetically connected to the upper atomization seat through a first sealing member, and the liquid locking member is hermetically connected to the first sealing member.

[0026] Further, the upper atomization seat is hermetically connected to the housing through a second sealing seat.

[0027] The present application also provides an electronic atomization device, including a power source and the atomizer as described above, and the power source is electrically connected to the atomizer.

[0028] The technical solution of the present application has the following advantages:

[0029] 1. In the atomizer provided by the present application, a liquid locking member is arranged between the liquid supply channel of the atomization seat and the liquid absorption surface of the heating element. A liquid locking opening communicating with the liquid supply channel and a liquid locking space communicating with the liquid absorption surface are arranged on the liquid locking member, and the liquid locking opening and the liquid locking space are communicated. When the atomizer is placed upright, the liquid in the liquid storage cavity flows through the liquid supply channel on the atomization seat and the liquid locking opening on the liquid locking member to the liquid absorption surface of the heating element under the action of gravity, and remains in the liquid locking space between the upper part of the liquid absorption surface and the liquid locking member. When the atomizer is tilted or inverted, the liquid retained in the liquid locking space has sufficient pulling force on the liquid in the liquid supply channel, and the liquid in the liquid supply channel is not easy to flow back to the liquid storage cavity and is thus locked in the liquid locking space. Even if most of the liquid in the liquid storage cavity pulls away the liquid in the liquid supply channel, due to the pulling force of the liquid in the liquid locking space on the liquid in the liquid locking opening and the pulling force of the liquid in the liquid storage cavity + liquid supply channel on the liquid in the liquid locking opening being in opposite directions, the liquid will be broken at the liquid locking opening, cutting off the liquid connection at the liquid locking opening. At this time, although the liquid in the liquid storage cavity cannot flow to the liquid absorption surface of the heating element, the liquid absorption surface of the heating element can still absorb the liquid retained in the liquid locking space, thus avoiding the problems of the heating element burning dry and generating a burnt smell or even burning out the heating element on the heating element.

[0030] 2. In the atomizer provided by the present application, when the width of the liquid locking opening is less than 0.4 mm, it will affect the aerosol generation amount during the forward suction of the atomizer. When the width of the liquid locking opening is greater than 1.5 mm, the liquid connection at the liquid locking opening cannot be cut off. The width of the liquid locking opening is set between 0.4 - 1.5 mm, which can not only achieve the liquid locking effect but also avoid affecting the aerosol generation amount during the forward suction of the atomizer.

[0031] 3. In the atomizer provided by the present application, an exhaust hole is arranged on the upper top wall of the liquid locking member, which can make the bubbles generated on the liquid absorption surface of the heating element grow upward, avoiding the lateral growth of bubbles and blocking the liquid absorption surface of the heating element.

[0032] 4. For the atomizer provided in this application, when the distance between the inner top surface of the upper top wall and the liquid suction surface of the heating element is less than 0.5 mm, the problem of bubble blockage of the liquid suction surface of the heating element is likely to occur; when the distance between the inner top surface of the upper top wall and the liquid suction surface of the heating element is greater than 1.5 mm, there is more liquid remaining in the liquid locking space, and the liquid connection film on the exhaust hole is easily damaged due to excessive liquid gravity when the atomizer is inverted, thus the liquid locking cannot be achieved. The distance between the inner top surface of the upper top wall and the liquid suction surface of the heating element is set between 0.5 - 1.5 mm, which can both lock the liquid and avoid bubble blockage of the liquid suction surface of the heating element.

[0033] 5. For the atomizer provided in this application, a flow blocking groove is provided on the inner top surface of the upper top wall. When the atomizer is inverted, it can increase the flow resistance of the liquid, cooperate with the liquid locking gap to cut off the liquid connection, and achieve the purpose of better liquid locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of this application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0035] Figure 1 It is a schematic diagram of the overall structure of the atomizer provided in the embodiment of this application;

[0036] Figure 2 It is a cross-sectional view of the atomizer provided in the embodiment of this application;

[0037] Figure 3 It is a schematic diagram of the overall structure of the atomizing seat provided in the embodiment of this application;

[0038] Figure 4 is Figure 3 an exploded view of;

[0039] Figure 5 It is a schematic diagram of the positional relationship between the heating element and the lower atomizing seat in the embodiment of this application;

[0040] Figure 6 It is a schematic diagram of the structure of the first surface of the liquid locking member in the embodiment of this application;

[0041] Figure 7 It is a schematic diagram of the structure of the second surface of the liquid locking member in the embodiment of this application;

[0042] Figure 8 It is a schematic diagram of the atomizing surface of the heating element in this application.

[0043] Description of reference numerals: 10, atomizer; 1, housing; 101, liquid storage chamber; 102, air duct; 103, aerosol outlet; 20, atomization base; 2, upper atomization base; 201, liquid supply channel; 202, atomization air channel; 3, lower atomization base; 301, atomization chamber; 302, air inlet hole; 4, heating element; 401, liquid absorption surface; 402, atomization surface; 403, liquid absorption channel; 404, heating film; 5, liquid locking member; 501, liquid locking opening; 502, liquid locking space; 503, interval; 51, side wall; 52, upper top wall; 53, exhaust hole; 54, flow blocking groove; 541, top opening; 542, end opening; 55, buckle; 56, boss; 57, short side wall; 58, limiting structure; 6, first seal; 601, flange; 7, second seal. Detailed implementation manners

[0044] The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0045] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0046] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0047] In addition, the technical features involved in different implementation manners of the present application described below can be combined with each other as long as they do not conflict with each other.

[0048] The present application provides an atomizer. The atomizer 10 can be used for atomizing liquid matrices such as flavor liquids and medicaments. The atomizer 10 is used to store the liquid matrix and atomize the liquid matrix to form an aerosol for the user to inhale.

[0049] As Figure 1 shown in FIG. -4, the atomizer 10 includes a housing 1, an atomization base 20, and a heating element 4. The atomization base 20 includes an upper atomization base 2 and a lower atomization base 3. Among them, the housing 1 is a housing structure with an open end at one end and a liquid storage cavity 101 inside. The liquid storage cavity 101 is used to store the liquid matrix. The lower atomization base 3 is sealingly connected to the open end of the housing 1 and blocks the liquid storage cavity 101. The upper atomization base 2 is connected to the side of the lower atomization base 3 facing the liquid storage cavity 101, and a second seal 7 is provided between the upper atomization base 2 and the inner wall of the housing 1; a liquid supply channel 201 communicating with the liquid storage cavity 101 is provided inside the upper atomization base 2. The inside of the lower atomization base 3 has an atomization cavity 301, and an air inlet for external gas to enter the atomization cavity 301 is provided at the bottom of the lower atomization base 3; a gas guide tube 102 extending into the liquid storage cavity 101 and connected to the upper atomization base 2 is connected to the closed end of the housing 1, and an atomization gas channel 202 communicating the gas guide tube 102 and the atomization cavity 301 is provided on the upper atomization base 2. The heating element 4 is located between the upper atomization base 2 and the lower atomization base 3, and the atomization surface 402 of the heating element 4 communicates with the atomization cavity 301. The atomization surface 402 of the heating element 4 generates an aerosol in the atomization cavity 301, and the aerosol is introduced into the gas guide tube 102 through the atomization gas channel 202. The gas guide tube 102 is used to guide the aerosol to the user's mouth through the aerosol outlet 103 on the housing 1.

[0050] As Figure 2 shown in FIG. -4 and Figure 8As shown, the heating element 4 is in the shape of a thin sheet, and the heating element 4 is hermetically connected to the bottom of the upper atomizing seat 2 through the first seal 6. The heating element 4 includes a thin sheet-shaped substrate and a heating element provided on the substrate. The thickness of the substrate is 0.1 - 3.0 mm; the atomizing surface 402 is one surface of the substrate. The heating element is specifically a heating film 404 provided on the atomizing surface of the substrate, and the heating film 404 is in an S shape in the middle part of the atomizing surface 402 of the substrate. The substrate also has a liquid absorption surface 401 communicating with the liquid supply channel 201 in the upper atomizing seat 2. The liquid absorption surface 401 and the atomizing surface 402 are respectively two opposite surfaces of the substrate; the substrate is provided with a liquid absorption channel 403 penetrating through the liquid absorption surface 401 and the atomizing surface 402. The liquid in the liquid storage cavity 101 can flow through the liquid supply channel 201 to the liquid absorption surface 401 of the substrate to be absorbed by the substrate, and then flow through the liquid absorption channel 403 to the atomizing surface 402 of the substrate. The liquid absorption channel 403 can be a microporous channel provided on the substrate, and the pore diameter range of the microporous channel is between 1 - 100 μm; the substrate can be a dense substrate such as glass or ceramic, and the liquid absorption channel 403 is a straight-through microporous array penetrating through the liquid absorption surface 401 and the atomizing surface 402; or the substrate itself is a porous structure such as porous ceramic, fiber cotton, etc., and the liquid can flow into the atomizing surface 402 of the substrate through the voids on the porous structure. During the working process, the heating film 404 heats and atomizes the liquid on the atomizing surface 402 to form an aerosol.

[0051] A liquid locking member 5 is further provided between the liquid supply channel 201 and the liquid absorption surface 401 of the heating element 4. The liquid locking member 5 is located directly above the liquid absorption surface 401 and is hermetically connected to the first seal 6. The liquid locking member 5 has a liquid locking opening 501 communicating with the liquid supply channel 201 and a liquid locking space 502 communicating with the liquid absorption surface 401; the liquid locking opening 501 and the liquid locking space 502 communicate through the gap between the liquid locking member 5 and the liquid absorption surface 401.

[0052] This atomizer 10 is configured such that a liquid locking member 5 is provided above the liquid absorption surface 401 of the heating element 4. A liquid locking opening 501 communicating with the liquid supply channel 201 and a liquid locking space 502 communicating with the liquid absorption surface 401 are provided on the liquid locking member 5, and the liquid locking opening 501 communicates with the liquid locking space 502. When the atomizer 10 is placed upright, the liquid in the liquid storage cavity 101 flows through the liquid supply channel 201 on the upper atomization base 2 and the liquid locking opening 501 on the liquid locking member 5 under the action of gravity to the liquid absorption surface 401 of the heating element 4, and remains in the liquid locking space 502 above the heating element 4. When the atomizer 10 is tilted or inverted, the liquid retained in the liquid locking space 502 exerts sufficient pulling force on the liquid in the liquid supply channel 201, and the liquid in the liquid supply channel 201 is not easily refluxed to the liquid storage cavity 101 and is thus locked in the liquid locking opening 501. Even if the liquid in the liquid supply channel 201 is pulled away by most of the liquid in the liquid storage cavity 101, due to the pulling force of the liquid in the liquid locking space 502 on the liquid in the liquid locking opening 501 and the pulling force of the liquid in the liquid storage cavity 101 + liquid supply channel 201 on the liquid in the liquid locking opening 501 being in opposite directions, the liquid will be broken at the liquid locking opening 501, cutting off the liquid connection at the liquid locking opening 501, thereby locking the liquid in the liquid locking space 502. At this time, although the liquid in the liquid storage cavity 101 cannot flow to the liquid absorption surface 401 of the heating element 4, the liquid absorption surface 401 of the heating element 4 can still absorb the liquid retained in the liquid locking space 502, thus avoiding the problems of the heating element 4 burning dry and generating a burnt smell or even burning out the heating element on the heating element 4.

[0053] The size of the liquid locking opening 501 is adapted to cut off the liquid connection in the liquid locking opening 501 when the housing 1 is tilted or inverted. Specifically, the width of the liquid locking opening 501 is 0.4 - 1.5 mm; preferably 0.6 - 1.0 mm. When the width of the liquid locking opening 501 is less than 0.4 mm, it will affect the aerosol generation amount during the forward suction of the atomizer 10. When the width of the liquid locking opening 501 is greater than 1.5 mm, the liquid connection at the liquid locking opening 501 cannot be cut off. When the width of the liquid locking opening 501 is set between 0.6 - 1.0 mm, the liquid locking effect can be achieved and the influence on the aerosol generation amount during the forward suction of the atomizer 10 can be avoided.

[0054] Specifically, the first sealing member 6 is annular, and a flange 601 extending towards the outer wall of the heating element 4 to limit the heating element 4 is provided on the outer side edge of the first sealing member 6.

[0055] As Figure 5As shown in FIGS. -7, in some embodiments, the liquid locking member 5 is generally square, including two long side walls 51 and two short side walls 57 that enclose a rectangular frame structure, and an upper top wall 52 integrally formed above the two long side walls 51; there is a gap 503 between the upper top wall 52 and the liquid absorption surface 401 of the heating element 4. The opening enclosed by the upper top wall 52, the short side walls 57 and the two long side walls 51 is the liquid locking opening 501, and the distance between the upper top wall 52 and the short side walls 57 is the width of the liquid locking opening 501. The space formed between the upper top wall 52 and the liquid absorption surface 401 of the heating element 4 is the liquid locking space 502. A limiting structure 58 is provided above the upper top wall 52 and the two short side walls 57, and the top of the limiting structure 58 abuts against the lower bottom surface of the upper atomization seat 2 to prevent the up and down movement of the liquid locking member 5.

[0056] In some embodiments, an exhaust hole 53 communicating with the liquid locking space 502 is formed on the upper top wall 52, and the diameter of the exhaust hole 53 is 0.8 - 1.5 mm. Since the heating element 4 is in the shape of a thin sheet, the gas in the atomization chamber 301 may enter from the atomization surface 402 side to the liquid absorption surface 401 side through the micropores on the heating element 4. By providing the exhaust hole 53 on the upper top wall 52 of the liquid locking member 5, the bubbles generated on the liquid absorption surface 401 of the heating element 4 can grow upward, avoiding the lateral growth of bubbles and blocking the liquid absorption surface 401 of the heating element 4. Further, the distance between the inner top surface of the upper top wall 52 and the liquid absorption surface 401 is 0.5 - 1.5 mm, preferably 0.8 - 1.3 mm. When the distance between the inner top surface of the upper top wall 52 and the liquid absorption surface 401 of the heating element 4 is less than 0.5 mm, it is easy to have the problem of bubble blockage of the liquid absorption surface 401 of the heating element 4; when the distance between the inner top surface of the upper top wall 52 and the liquid absorption surface 401 of the heating element 4 is greater than 1.5 mm, there is more liquid remaining in the liquid locking space 502, and the liquid connection film on the exhaust hole 53 is easily damaged due to excessive liquid gravity when the atomizer 10 is inverted, thus unable to achieve liquid locking. The distance between the inner top surface of the upper top wall 52 and the liquid absorption surface 401 of the heating element 4 is set between 0.8 - 1.3 mm, which can both lock the liquid and avoid bubble blockage of the liquid absorption surface 401 of the heating element 4. In some other embodiments, when the thickness of the heating element 4 is relatively large, the gas in the atomization chamber 301 is less likely to pass through the heating element 4, and there is no problem of bubble generation on the liquid absorption surface 401 of the heating element 4. At this time, the exhaust hole 53 may not be provided on the upper top wall 52.

[0057] In some embodiments, a flow blocking groove 54 is provided on the inner top surface of the upper top wall 52; the flow blocking groove 54 has a top opening 541 and an end opening 542, the top opening 541 faces the liquid absorption surface 401 of the heating element 4, and the end opening 542 communicates with the liquid locking opening 501. Specifically, the groove width of the flow blocking groove 54 is 0.2 - 0.5 mm, and the groove depth of the flow blocking groove 54 is 0.1 - 0.5 mm. When the atomizer 10 is inverted, the flow blocking groove 54 can increase the flow resistance of the liquid, cooperate with the liquid locking gap 503 to cut off the liquid connection, and achieve the purpose of better liquid locking.

[0058] In some embodiments, outwardly protruding buckles 55 are provided on the outer sides of the two long side walls 51 of the liquid locking member 5, and the buckles 55 are provided with inclined guide surfaces. The liquid locking member 5 is buckled and matched with the upper atomization seat 2 through the inclined guide surfaces on the buckles 55.

[0059] In some embodiments, bosses 56 extending towards the heating element 4 are integrally formed on the two long side walls 51 of the liquid locking member 5. There is a gap between the lower bottom surface of the boss 56 and the liquid absorption surface 401 of the heating element 4. The boss 56 can block the inner side edge of the first sealing member 6 to limit the position of the liquid locking member 5 on the first sealing member 6.

[0060] The present application also provides an electronic atomization device, including a power source and an atomizer 10 connected to each other. The power source is used to supply power to the atomizer 10 so that the atomizer 10 can atomize the liquid matrix to form an aerosol.

[0061] In summary, for the atomizer and the electronic atomization device provided by the present application, by providing a liquid locking member 5 with a liquid locking space 502 above the liquid absorption surface 401 of the heating element 4, and providing a liquid locking opening 501 communicating with the liquid supply channel 201 on the liquid locking member 5, when the atomizer 10 is inverted, the liquid is cut off in the liquid locking opening 501, so that the liquid is locked in the liquid locking space 502. The liquid absorption surface 401 of the heating element 4 can absorb the liquid in the liquid locking space 502, avoiding the problems that the heating element 4 dries out and generates a burnt smell, or even burns out the heating element on the heating element 4.

[0062] Obviously, the above-mentioned embodiments are only examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. An atomizer, characterized in that, it comprises: a housing (1) having a liquid storage chamber (101) inside for storing liquid; an atomization base (20) with a liquid supply channel (201) provided inside and communicating with the liquid storage chamber (101); a heating element (4) fixed on the atomization base (20) and having a liquid absorption surface (401) communicating with the liquid supply channel (201); a liquid locking member (5) located between the liquid supply channel (201) and the liquid absorption surface (401) of the heating element (4), having a liquid locking opening (501) communicating with the liquid supply channel (201) and a liquid locking space (502) communicating with the liquid absorption surface (401); the liquid locking opening (501) and the liquid locking space (502) communicate with each other; the liquid locking member (5) includes an upper top wall (52), there is a gap (503) between the upper top wall (52) and the liquid absorption surface (401) of the heating element (4), and the space formed between the upper top wall (52) and the liquid absorption surface (401) of the heating element (4) is the liquid locking space (502); an exhaust hole (53) communicating with the liquid locking space (502) is provided on the upper top wall (52); the diameter of the exhaust hole (53) is 0.8 - 1.5 mm; the distance between the inner top surface of the upper top wall (52) and the liquid absorption surface (401) is 0.5 - 1.5 mm.

2. The atomizer according to claim 1, characterized in that, the size of the liquid locking opening (501) is adapted to cut off the liquid connection at the liquid locking opening (501) when the housing (1) is tilted or inverted.

3. The atomizer according to claim 2, characterized in that, the width range of the liquid locking opening (501) is 0.4 - 1.5 mm.

4. The atomizer according to claim 1, characterized in that, the liquid locking member (5) includes two long side walls (51) and two short side walls (57) enclosing a frame shape, and the upper top wall (52) is connected between the two long side walls (51); the opening formed by enclosing between the upper top wall (52), the short side walls (57) and the two long side walls (51) is the liquid locking opening (501), and the distance between the upper top wall (52) and the short side walls (57) is the width of the liquid locking opening (501).

5. The atomizer according to claim 4, characterized in that, a flow blocking groove (54) is provided on the inner top surface of the upper top wall (52), the flow blocking groove (54) has a top opening (541) and an end opening (542), the top opening (541) faces the liquid absorption surface (401) of the heating element (4), and the end opening (542) communicates with the liquid locking opening (501).

6. The atomizer according to claim 5, characterized in that, the groove width of the flow blocking groove (54) is 0.2 - 0.5 mm, and the groove depth of the flow blocking groove (54) is 0.1 - 0.5 mm.

7. The atomizer according to claim 1, characterized in that, The liquid-locking member (5) is fixedly connected to the atomizing base (20) through a snap structure.

8. The atomizer according to claim 1, wherein, the heating element (4) includes a sheet-shaped substrate and a heating element provided on the surface of the substrate; the thickness of the substrate is 0.1-3.0 mm.

9. The atomizer according to claim 8, wherein, the heating element is provided on the atomizing surface (402) of the substrate, the liquid absorption surface (401) is the other surface of the substrate facing away from the atomizing surface (402), and the substrate is provided with a liquid absorption channel (403) penetrating through the liquid absorption surface (401) and the atomizing surface (402).

10. The atomizer according to claim 9, wherein, the liquid absorption channel (403) is a straight hole, and the aperture size of the straight hole is 1-100 μm.

11. The atomizer according to any one of claims 1-10, wherein, the atomizing base (20) includes an upper atomizing base (2) and a lower atomizing base (3), the lower atomizing base (3) is sealingly connected to the open end of the housing (1), the upper atomizing base (2) is connected to the side of the lower atomizing base (3) facing the liquid storage cavity (101), and the liquid supply channel (201) is provided on the lower atomizing base (3); the inside of the lower atomizing base (3) has an atomizing cavity (301), and the lower atomizing base (3) is provided with an air inlet for external gas to enter the atomizing cavity (301); the heating element (4) is located between the upper atomizing base (2) and the lower atomizing base (3), and the atomizing surface (402) of the heating element (4) communicates with the atomizing cavity (301).

12. The atomizer according to claim 11, wherein, a gas guide pipe (102) extending into the liquid storage cavity (101) and connected to the upper atomizing base (2) is connected to the closed end of the housing (1), and an atomizing gas channel (202) communicating the gas guide pipe (102) and the atomizing cavity (301) is provided on the upper atomizing base (2).

13. The atomizer according to claim 11, wherein, the heating element (4) is sealingly connected to the upper atomizing base (2) through a first sealing member (6), and the liquid-locking member (5) is sealingly connected to the first sealing member (6).

14. The atomizer according to claim 12, wherein, the upper atomizing base (2) is sealingly connected to the housing (1) through a second sealing seat.

15. An electronic atomization device, wherein, it includes a power source and the atomizer (10) according to any one of claims 1-14 above, and the power source is electrically connected to the atomizer (10).

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