Atomizer and electronic atomization device

Abstract

The present invention relates to an atomizer and an electronic atomization device. The atomizer is applied to an electronic atomization device for users to inhale. The atomizer comprises: an air flow channel, including an air inlet and an air outlet. An atomizer core, at least a part of which is located in the air flow channel. A base, through which the air inlet passes. And a one-way valve, comprising a baffle elastically connected to the base; the baffle has a closed state and an open state; under normal circumstances, the baffle is in a closed state, and the baffle covers the air inlet; when a suction action occurs at the air outlet, the baffle is in an open state, allowing airflow to pass through. The base has an upper surface, and the baffle has a lower surface. When the baffle is in a closed state, the upper surface is opposite to the lower surface; the upper surface and / or the lower surface reduce the contact area between the baffle and the base by partially protruding or partially recessed. This can improve the response sensitivity of the atomizer to the user's inhalation.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic atomization, and in particular to an atomizer and an electronic atomization device comprising the atomizer. Background Art

[0002] There are dozens of carcinogens in tobacco smoke, such as tar, which is very harmful to human health. The smoke fills the air and forms secondhand smoke, which can also cause harm to the body when inhaled by people around. Therefore, smoking is prohibited in most public places. Electronic atomizers have a similar appearance and taste to ordinary cigarettes, but usually do not contain tar, suspended particles and other harmful ingredients in cigarettes. Therefore, electronic atomizers are widely used as substitutes for cigarettes.

[0003] The electronic atomization device includes an atomizer and a power supply assembly. The power supply assembly is used to provide electrical energy to the atomizer. The atomizer converts the electrical energy into heat energy. The oil in the atomizer absorbs the heat and then atomizes to form smoke that can be inhaled by the user. However, for traditional electronic atomization devices, in order to prevent the oil in the atomizer storage chamber and the condensate formed after the smoke is cooled from leaking from the atomizer, and to prevent the leaked oil and condensate from corroding the power supply assembly, a valve is usually set in the atomizer to prevent the leakage of oil and condensate. However, the resistance to opening the valve is large, resulting in a poor user experience of difficulty in inhaling. Summary of the invention

[0004] A technical problem solved by the present invention is how to improve the response sensitivity of the atomizer to the user's inhalation.

[0005] An atomizer is used in an electronic atomization device for a user to inhale, and the atomizer comprises:

[0006] an air flow channel, including an air inlet and an air outlet;

[0007] an atomizing core, at least a portion of which is located in the air flow channel;

[0008] a base through which the air inlet passes; and

[0009] A one-way valve, comprising a baffle elastically connected to the base; the baffle has a closed state and an open state; under normal circumstances, the baffle is in a closed state, and the baffle covers the air inlet; when a suction action occurs at the air outlet, the baffle is in an open state, allowing airflow to pass through;

[0010] The base has an upper surface, and the baffle has a lower surface. When the baffle is in a closed state, the upper surface is opposite to the lower surface; the upper surface and / or the lower surface reduces the contact area between the baffle and the base by partially protruding or partially recessing.

[0011] In one of the embodiments, the upper surface is recessed to form an annular groove, and the annular groove enables a portion of the base to form a support tube, and the air inlet hole passes through the support tube, and the blocking piece can be pressed against the support tube to cover the air inlet hole.

[0012] In one embodiment, the support tube has a contact surface, a first spacing surface and a second spacing surface, the contact surface is connected between the first and second spacing surfaces, the first and second spacing surfaces form a set cone angle and are both located on the side of the contact surface away from the baffle; when the baffle covers the air inlet hole, the contact surface is pressed against the lower surface of the baffle, and the first and second spacing surfaces are both spaced apart from the lower surface.

[0013] In one of the embodiments, the cone angle ranges from 20° to 135°, and the contact surface width ranges from 0.2 mm to 1 mm.

[0014] In one embodiment, a concave cavity is formed on the contact surface, the first spacing surface defines a portion of the boundary of the air inlet hole, and the concave cavity penetrates the first spacing surface and is connected with the air inlet hole.

[0015] In one embodiment, the concave cavity passes through the second spacing surface and is communicated with the annular groove.

[0016] In one embodiment, the depth of the cavity is 0.01 mm to 0.5 mm.

[0017] In one embodiment, the base includes a boss, which is arranged on the upper surface and protrudes relative to the upper surface. When the baffle covers the air inlet hole, the surface of the boss facing the atomizer core is a contact surface pressed against the lower surface of the baffle, and the lower surface is spaced apart from a portion of the upper surface where the boss is not arranged.

[0018] In one embodiment, the baffle includes a convex strip, which is arranged on the lower surface and protrudes relative to the lower surface. When the baffle covers the air inlet, a portion of the upper surface is a contact surface pressed against the convex strip, and another portion of the upper surface is spaced apart from the lower surface.

[0019] In one embodiment, the surfaces of the base and the blocking piece that press against each other are both contact surfaces, and a countersunk hole is formed in a depression on the contact surface.

[0020] In one of the embodiments, the surfaces of the base and the baffle that press against each other are both contact surfaces, and the contact surfaces are rough surfaces with a roughness Ra≥1.6 μm.

[0021] In one embodiment, the one-way valve further includes a fixed end and an elastic arm, wherein the elastic arm is connected between the fixed end and the baffle, the fixed end is fixedly connected to the base, and the baffle can swing relative to the fixed end following the elastic arm.

[0022] In one embodiment, the elastic arm has a first curved surface and a second curved surface with opposite bending directions, and the distance between the first curved surface and the second curved surface decreases from the edge portion to the middle portion of the elastic arm.

[0023] In one embodiment, the elastic arm has the smallest thickness relative to the fixed end and the blocking piece.

[0024] In one embodiment, the thickness of the elastic arm is 0.1 mm to 0.8 mm, the length of the elastic arm is 0.02 mm to 2 mm, and the width of the elastic arm is 0.5 mm to 3 mm.

[0025] In one of the embodiments, along the width direction of the elastic arm, the edge of the elastic arm maintains a set distance from the edge of the fixed end and the edge of the blocking piece respectively.

[0026] In one of the embodiments, a through hole extending along the thickness direction of the fixed end is formed on the fixed end, and the through hole is used for installing the fixed end.

[0027] In one of the embodiments, when the baffle opens the air inlet, the maximum distance between the portion of the base that can press against the baffle and the baffle is 0.3 mm to 1.5 mm.

[0028] In one embodiment, the base and / or the baffle are provided with a concave cavity. When the baffle is in a closed state, the surfaces of the base and the baffle that are pressed against each other are contact surfaces. At least a portion of the concave cavity is located on the contact surface of the base and / or the contact surface of the baffle, and the concave cavity is connected to the air inlet hole to form a stress weak point.

[0029] In one of the embodiments, the concave cavity cuts off the contact surface of the base and / or the contact surface of the baffle, preventing the contact surfaces from closing along the circumference of the air inlet hole to form a continuous ring.

[0030] In one of the embodiments, when the air pressure difference formed by the suction action on the two opposite sides of the baffle is greater than a threshold pressure, the baffle is in an open state, and the threshold pressure is 10 Pa to 100 Pa.

[0031] In one embodiment, the threshold pressure is 30 Pa to 70 Pa.

[0032] An electronic atomization device comprises a power supply assembly and any one of the above-mentioned atomizers, wherein the power supply assembly is provided with a receiving cavity capable of accommodating the atomizer.

[0033] In one embodiment, the atomizer is detachably connected to the power supply assembly.

[0034] A technical effect of an embodiment of the present invention is: since the contact area between the baffle and the base is reduced by partially protruding or partially recessing the upper surface and / or the lower surface, the adhesion force between the base and the baffle caused by condensate and overflowed oil is reduced, and at the same time, the resistance when the baffle leaves the base to open the air inlet is reduced, so that the user can open the baffle through a small air pressure difference generated by a small suction force, thereby opening the air inlet to draw out smoke, preventing the baffle from being unable to separate from the base due to too small a suction force. The response sensitivity of the atomizer to the user's suction is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the three-dimensional structure of an atomizer provided in an embodiment;

[0036] Figure 2 for Figure 1 A schematic diagram of a three-dimensional cross-sectional structure of the atomizer shown;

[0037] Figure 3 for Figure 1 The schematic diagram of the planar cross-sectional structure of the atomizer shown is when the baffle covers the air inlet hole;

[0038] Figure 4 for Figure 1 The schematic diagram of the planar cross-sectional structure of the atomizer shown is when the baffle opens the air inlet hole;

[0039] Figure 5 for Figure 1 A partial three-dimensional cross-sectional structural schematic diagram of a first exemplary base in the atomizer shown;

[0040] Figure 6 for Figure 1 A schematic diagram of a partial planar cross-sectional structure of a first example base in the atomizer shown;

[0041] Figure 7 for Figure 1 A partial cross-sectional schematic diagram of a second example base and a baffle in the atomizer shown;

[0042] Figure 8 for Figure 1 A partial cross-sectional schematic diagram of a second exemplary base and a blocking piece in the atomizer shown;

[0043] Fig. 9 for Figure 1A partial cross-sectional schematic diagram of a third example base and a baffle in the atomizer shown;

[0044] Fig.10 for Figure 1 A partial top view of the structure of a fourth example base in the atomizer shown;

[0045] Fig.11 for Figure 1 A schematic diagram of the three-dimensional structure of a baffle in the atomizer shown;

[0046] Fig.12 for Fig.11 A schematic diagram of the three-dimensional cross-sectional structure of the baffle shown. DETAILED DESCRIPTION

[0047] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0048] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "inside", "outside", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0049] See also Figure 1 and Figure 2 The electronic atomization device provided by one embodiment of the present invention includes an atomizer 10 and a power supply assembly. The power supply assembly is used to provide electrical energy to the atomizer 10. The atomizer 10 converts the electrical energy into heat energy. The oil stored in the liquid storage chamber 500 of the atomizer 10 absorbs the heat and then atomizes to form smoke that can be inhaled by the user. A receiving chamber is provided on the power supply assembly, and a part of the atomizer 10 is inserted and accommodated in the receiving chamber. The atomizer 10 is detachably connected to the power supply assembly. Of course, the atomizer 10 and the power supply assembly can also form a non-detachable connection relationship.

[0050] In some embodiments, an air flow channel 400 is provided in the atomizer 10, and the air flow channel 400 runs through the bottom surface and the top surface of the atomizer 10, and the opening of the air flow channel 400 on the top surface is an air outlet 420. When the user takes a puff at the air outlet 420, the outside air is input into the atomizer 10 from the bottom of the air flow channel 400, and the smoke generated by atomization in the atomizer 10 is carried by the outside air and output from the air outlet 420 for the user to inhale. The atomizer 10 includes an atomizer core 100, a base 200, and a one-way valve 300.

[0051] See also Figure 2 and Figure 3 , the atomizer core 100 is electrically connected to the power supply assembly through the electrode. The atomizer core 100 may include a porous ceramic body 110 and a heating wire 120. The porous ceramic body 110 is roughly columnar and arranged horizontally. The two ends of the porous ceramic body 110 can absorb oil from the liquid storage chamber 500 of the atomizer 10. The middle part of the porous ceramic body 110 is located in the air flow channel 400, and the heating wire 120 is wound around the middle part of the porous ceramic body 110. Obviously, the heating wire 120 is also located in the air flow channel 400. When the oil is transported from the end of the porous ceramic body 110 to the middle part through capillary action, the heating wire 120 generates heat and atomizes the oil to form smoke that can be inhaled by the user.

[0052] See also Figure 3 and Figure 4 The base 200 is located at the bottom of the atomizer 10, and the air flow channel 400 includes an air inlet 410 located at the lower end thereof. The air inlet 410 is opened on the base 200, and external gas can be input into the atomizer 10 through the air inlet 410. The base 200 has an upper surface 210, and the upper surface 210 is arranged toward the atomizer core 100. The one-way valve 300 includes a baffle 310, and the baffle 310 is elastically connected to the base 200. The baffle 310 has a lower surface 311. Along the extension direction of the air flow channel 400, the baffle 310 is located between the base 200 and the atomizer core 100, that is, the baffle 310 is located below the atomizer core 100 and above the base 200.

[0053] Under normal conditions such as transportation and storage, the baffle 310 is in a closed state due to various resistances such as the elastic force of the baffle 310 itself and gravity, and the baffle 310 covers the air inlet 410. When the user inhales at the air outlet 420, an air pressure difference is formed between the upper and lower sides of the baffle 310, and the air pressure difference overcomes the resistance of the baffle 310 and moves away from the air inlet 410, and the baffle 310 is in an open state, allowing the airflow in the air inlet 410 to enter the air outlet 420 through other parts of the air flow channel 400. When the baffle 310 is in a closed state, the upper surface 210 of the base 200 and the lower surface 311 of the baffle 310 are arranged opposite to each other, and at the same time, the upper surface 210 and / or the lower surface 311 reduce the contact area between the baffle 310 and the base 200 by partially protruding or partially recessing.

[0054] See also Figure 3 and Figure 4 , in the extension direction of the air flow channel 400, when the air pressure difference between the upper and lower sides of the baffle 310 is less than the threshold pressure, the baffle 310 covers the air inlet 410. When the air pressure difference between the opposite sides of the baffle 310 is greater than the threshold pressure, the baffle 310 opens the air inlet 410. For example, when the user inhales at the air outlet 420, the air pressure in the air flow channel 400 above the baffle 310 is less than the air pressure in the air flow channel 400 (air inlet 410) below the baffle 310. The gas pressure formed by the air pressure difference can overcome the resistance such as gravity and elastic force of the baffle 310 and drive the baffle 310 to move upward, so that the baffle 310 leaves the base 200 and opens the air inlet 410, ensuring that the gas in the air inlet 410 can enter the air flow channel 400 above the baffle 310 to carry smoke for the user to inhale. When the user stops inhaling at the air outlet 420, the air pressure in the air flow channel 400 above the baffle 310 and the air pressure in the air flow channel 400 (air inlet 410) below the baffle 310 are both atmospheric pressure, thereby eliminating the air pressure difference acting on the baffle 310. The baffle 310 is re-supported on the base 200 under the action of gravity and elastic force to cover the air inlet 410.

[0055] When the baffle 310 covers the air inlet 410, on the one hand, the smoke can not flow back to the power supply assembly through the air inlet 410, so as to prevent the condensate formed by the cooling of the smoke from corroding the power supply assembly. On the other hand, it can block the oil overflowing from the atomizer core 100, preventing the oil from leaking from the air inlet 410 to the power supply assembly and corroding it. Of course, the lower surface 311 of the baffle 310 will inevitably adhere to the condensate formed by the smoke and the oil overflowing from the atomizer core 100. When the baffle 310 is in contact with the base 200, the condensate and the overflowed oil will have a bonding effect on the baffle 310 and the base 200. If the contact area between the baffle 310 and the base 200 is large, the condensate and the overflowed oil adhering to the baffle 310 and the base 200 will increase, thereby making the bonding force between the baffle 310 and the base 200 larger. When the user's suction force is relatively small, the air pressure difference formed on both sides of the baffle 310 will not be able to overcome gravity, elastic force and adhesive force to make the baffle 310 open the air inlet 410, resulting in the user being unable to inhale the smoke. Therefore, the user must inhale vigorously to form a larger air pressure difference, so that the baffle 310 opens the air inlet 410 to smoothly inhale the smoke. Therefore, when the contact area between the baffle 310 and the base 200 is relatively large, the response sensitivity of the atomizer 10 to the user's inhalation will be affected.

[0056] In some embodiments, for example, see Figure 4 , Figure 5 and Figure 6 The upper surface 210 of the base 200 is concave to form an annular groove 222. Through the cutting effect of the annular groove 222, a part of the base 200 forms a support tube 202. The air inlet 410 passes through the support tube 202. The baffle 310 can press against the support tube 202 to cover the air inlet 410. When the baffle 310 covers the air inlet 410, the surfaces of the base 200 and the baffle 310 that press against each other are both contact surfaces, that is, the contact surface of the base 200 and the contact surface of the baffle 310 are attached to each other. The contact surface of the base 200 is recorded as a first contact surface 212, and the first contact surface 212 is located on the support tube 202.

[0057] Specifically, the support cylinder 202 has a first contact surface 212, a first spacing surface 211a and a second spacing surface 211b, and the first spacing surface 211a defines a part of the boundary of the air inlet 410. The first contact surface 212 can be in the shape of a runway, and of course, the first contact surface 212 can also be in the shape of a ring or a rectangle. The first contact surface 212 is arranged horizontally, and the first spacing surface 211a and the second spacing surface 211b are both inclined to form a certain angle with the first contact surface 212. The first contact surface 212 is connected between the upper ends of the first spacing surface 211a and the second spacing surface 211b. The first spacing surface 211a and the second spacing surface 211b are both located on the side of the first contact surface 212 away from the baffle 310 (i.e., the lower side), so that the first spacing surface 211a, the second spacing surface 211b and the first contact surface 212 form a conical structure. The angle between the first spacing surface 211a and the second spacing surface 211b is the cone angle α of the cone structure, and the value range of the cone angle α is 20° to 135°, for example, the specific value of the cone angle α can be 20°, 100° or 135°, etc. The value range of the width W of the first contact surface 212 is 0.2 mm to 1 mm, for example, the specific value of the width W can be 0.2 mm, 0.5 mm or 1 mm, etc.

[0058] See also Figure 3 and Figure 4 When the baffle 310 is carried on the base 200 and covers the air inlet 410, the baffle 310 is pressed against the first contact surface 212, that is, the lower surface 311 of the baffle 310 is attached to the first contact surface 212. There is a gap 230 between the first spacing surface 211a and the lower surface 311 of the baffle 310, and there is also a gap 230 between the second spacing surface 211b and the lower surface 311 of the baffle 310, so that neither the first spacing surface 211a nor the second spacing surface 211b forms an attached relationship with the lower surface 311 of the baffle 310. When the baffle 310 leaves the base 200 under the action of the air pressure difference and opens the air inlet 410, the lower surface 311 of the baffle 310 leaves the first contact surface 212 and releases the attached relationship with the first contact surface 212.

[0059] In fact, if the upper surface 210 of the base 200 is not sunken downward to form an annular groove 222, the baffle 310 will inevitably have a larger contact area with the base 200. By providing the annular groove 222 on the upper surface 210, the baffle 310 is attached to the surface of the support tube 202 facing the atomizer core 100, and the surface of the support tube 202 facing the atomizer core 100 can be regarded as a part of the upper surface 210. Therefore, even if the surface of the support tube 202 facing the atomizer core 100 is a horizontal plane, the contact area between the baffle 310 and the base 200 can be reduced by attaching the baffle 310 to the surface of the support tube 202 facing the atomizer core 100. Furthermore, if the two end portions of the horizontal plane are recessed downward, the first spacing surface 211a and the second spacing surface 211b can be regarded as formed by the two end portions of the horizontal plane being recessed downward, while the middle portion of the horizontal plane is not recessed downward but remains horizontally arranged, that is, the first contact surface 212 can be regarded as formed by the middle portion of the horizontal plane. When the baffle 310 covers the air inlet 410, neither the first spacing surface 211a nor the second spacing surface 211b forms an attached relationship with the lower surface 311 of the baffle 310, and the lower surface 311 of the baffle 310 is only attached to the first contact surface 212, thereby further reducing the contact area between the baffle 310 and the base 200, so that there is a smaller adhesion force between the baffle 310 and the base 200, ensuring that a smaller air pressure difference is formed on both sides of the baffle 310 to overcome gravity, elastic force and adhesion force to make the baffle 310 open the air inlet 410, so that the user can inhale smoke with a smaller suction force, preventing the blocking or disconnection caused by the difficulty in separating the baffle 310 from the base 200 due to too small suction force, and finally improving the response sensitivity of the atomizer 10 to the user's suction.

[0060] For example, see Figure 7 and Figure 8, the area of ​​the upper surface 210 of the base 200 is relatively large, and the upper surface 210 is arranged horizontally. The base 200 includes a boss 201, which is arranged on the upper surface 210 and protrudes toward the atomizer core 100 relative to the upper surface 210 by a set height. When the baffle 310 covers the air inlet hole 410, the baffle 310 is attached to the surface of the boss 201 facing the atomizer core 100, so the surface of the boss 201 facing the atomizer core 100 is the contact surface 212. The portion of the upper surface 210 where the boss 201 is not arranged is the spacing surface 211, and a gap 230 is formed between the spacing surface 211 and the baffle 310, so that the baffle 310 cannot be attached to the spacing surface 211. Therefore, when the boss 201 is provided on the upper surface 210, the entire upper surface 210 can be effectively prevented from being attached to the baffle 310, so that the baffle 310 is only attached to the relatively small contact surface 212 on the boss 201. Similarly, the attachment area and the adhesive force between the baffle 310 and the base 200 can be reduced, so that the user can inhale the smoke with a smaller suction force, thereby improving the response sensitivity of the atomizer 10 to the user's suction.

[0061] For example, see Fig. 9 The upper surface 210 of the base 200 has a relatively large area and is arranged horizontally. The baffle 310 includes a convex strip 312, which is arranged on the lower surface 311 and protrudes toward the base 200 relative to the lower surface 311 by a set length. When the baffle 310 covers the air inlet 410, the portion of the upper surface 210 that is attached to the convex strip 312 is the contact surface 212, and the portion of the upper surface 210 that is not pressed against the convex strip 312 is the spacing surface 211, and a gap 230 is formed between the spacing surface 211 and the portion of the lower surface 311 that is not provided with the convex strip 312. Therefore, when the lower surface 311 of the baffle 310 has a convex strip 312, the entire upper surface 210 can also be prevented from being attached to the baffle 310, so that the baffle 310 is only attached to the contact surface 212 with a relatively small area, thereby reducing the attachment area and adhesion force between the baffle 310 and the base 200, so that the user can inhale smoke with a smaller suction force, thereby improving the response sensitivity of the atomizer 10 to the user's suction.

[0062] In some embodiments, see Fig.10The upper surface 210 of the base 200 is a horizontal plane, and a part of the upper surface 210 is sunken downward to form a countersunk hole 221. There are multiple countersunk holes 221 and they can be evenly spaced along the circumference of the air inlet 410. When the baffle 310 is pressed against the base 200, the un-sunk part of the upper surface 210 is attached to the baffle 310, ensuring that only a part of the upper surface 210 eventually forms an actual attachment relationship with the baffle 310. This can also reduce the attachment area and adhesive force between the baffle 310 and the base 200, so that the user can inhale the smoke with a smaller suction force, thereby improving the response sensitivity of the atomizer 10 to the user's suction. Of course, the countersunk hole 221 can also be opened on the lower surface 311 of the baffle 310.

[0063] In some embodiments, see Fig.11 and Fig.12 In addition to the baffle 310, the one-way valve 300 may further include a fixed end 330 and an elastic arm 320. The fixed end 330 is provided with a through hole 331 extending in the thickness direction thereof, and the fixed end 330 may be mounted on the base 200 through the through hole 331. The elastic arm 320 is connected between the fixed end 330 and the baffle 310, and the baffle 310 may swing up and down relative to the fixed end 330 following the elastic arm 320. The entire one-way valve 300 may be integrally formed, and the one-way valve 300 may be made of an elastic plastic material.

[0064] Compared with the baffle 310 and the fixed end 330, the thickness D of the elastic arm 320 is the smallest, and the thickness D of the elastic arm 320 is 0.1 mm to 0.8 mm, for example, the specific value of the thickness can be 0.1 mm, 0.5 mm or 0.8 mm. The length C of the elastic arm 320 is 0.02 mm to 2 mm, for example, the specific value of the length C can be 0.02 mm, 1 mm or 2 mm. The width B of the elastic arm 320 is 0.5 mm to 3 mm, for example, the specific value of the width B can be 0.5 mm, 2 mm or 3 mm. The elastic arm 320 has a first curved surface 321 and a second curved surface 322 with opposite bending directions. The first curved surface 321 is the upper surface of the elastic arm 320 and the bending direction is upward, and the second curved surface 322 is the lower surface of the elastic arm 320 and the bending direction is downward. From the edge portion of the elastic arm 320 to the middle portion thereof, the distance between the first curved surface 321 and the second curved surface 322 decreases. Along the width direction of the elastic arm 320 , the edge of the elastic arm 320 maintains a set distance A with the edges of the fixed end 330 and the baffle 310 , so that two structures similar to U-shaped grooves are formed on the entire one-way valve 300 .

[0065] Through the above-mentioned arrangement of the one-way valve 300, when the pressure difference acts on the baffle 310, the elastic arm 320 can be easily elastically deformed, that is, the elastic force generated in the process of the baffle 310 opening the air inlet hole 410 is reduced, so that the baffle 310 can be separated from the base 200 under a smaller pressure difference to open the air inlet hole 410, ultimately reducing the user's suction force and improving the response sensitivity of the atomizer 10 to the user's suction.

[0066] In some embodiments, see Figure 3 , Figure 4 and Figure 5 , since the entire first contact surface 212 can be attached to the baffle 310, at this time, a cavity 250 can also be provided on the contact surface of the baffle 310 and / or the first contact surface 212 of the base 200, and the cavity 250 is covered between the base 200 and the baffle 310 and communicates with the air inlet 410. Of course, when the cavity 250 is provided on the baffle 310, at least a part of the positive projection of the cavity 250 relative to the base 200 falls on the first contact surface 212. The depth dimension h of the cavity 250 is 0.01 mm to 0.5 mm, for example, the depth dimension h can be 0.01 mm, 0.4 mm or 0.5 mm, etc. The cross-sectional profile of the cavity 250 is circular, polygonal or elliptical, etc.

[0067] When the concave cavity 250 connected to the air inlet 410 is further provided on the first contact surface 212, the concave cavity 250 acts as a notch. At the notch formed by the concave cavity 250, the portion of the baffle 310 corresponding to the concave cavity 250 does not form an actual attachment relationship with the base 200, and thus the portion of the baffle 310 adhered with condensate and overflowed oil does not form an adhesive force with the base 200. Therefore, under the action of the pressure difference, since the resistance of the baffle 310 to open the air inlet is roughly composed of gravity, elastic force and adhesive force, when the gravity and elastic force are the same, when the adhesive force is reduced or eliminated, the baffle 310 is more likely to detach from the base 200.

[0068] In view of the fact that no adhesive force is formed between the portion of the baffle 310 corresponding to the concave cavity 250 and the base 200, and the fact that the concave cavity 250 is connected to the air inlet 410, the pressure difference will directly act on the portion of the baffle 310. For the entire baffle 310, the portion of the baffle 310 corresponding to the concave cavity 250 is easier to detach from the base 200 than other portions of the baffle 310 actually attached to the base 200, so that the portion of the baffle 310 forms a stress weak point, and then the entire baffle 310 first detaches from the base 200 near the stress weak point and forms a "tear gap" between the baffle 310 and the base 200. When external gas enters the "tear gap" from the air inlet 410, the adhesion between the condensate and the overflowed oil can be further greatly weakened, so that the "tear gap" can quickly expand to correspond to other parts of the baffle 310, and finally reduce the resistance of the entire baffle 310 to leave the base 200, ensuring that the baffle 310 can quickly detach from the base 200 under a smaller pressure difference, preventing the baffle 310 from detaching from the base 200 due to too small a suction force, thereby further improving the response sensitivity of the atomizer 10 to the user's suction.

[0069] Of course, when the concave cavity 250 is simultaneously provided on the contact surface of the baffle 310 and the first contact surface 212 of the base 200, referring to the above case of providing the concave cavity 250 on the first contact surface 212 of the base 200, a stress weak point can also be formed, thereby eliminating the sense of jamming or breaking, and improving the response sensitivity of the atomizer 10 to the user's inhalation. In order to form multiple stress weak points and further reduce the resistance of the baffle 310 to leave the base 200, the number of the concave cavities 250 can be multiple, and the multiple concave cavities 250 are arranged at intervals along the circumference of the air inlet 410.

[0070] For the embodiment in which the support cylinder 202 has the first contact surface 212, the first spacing surface 211a and the second spacing surface 211b, two concave cavities 250 are provided on the first contact surface 212, and the concave cavity 250 can only penetrate the first spacing surface 211a and communicate with the air inlet 410. While reducing the contact area between the baffle 310 and the base 200, a stress weak point can be formed between the baffle 310 and the base 200, further reducing the resistance of the baffle 310 leaving the base 200. Of course, the concave cavity 250 can further penetrate the second spacing surface 211b and communicate with the annular groove 222, that is, the concave cavity 250 is connected to the air inlet 410 and the annular groove 222 at the same time, so that the concave cavity 250 forms a cutting effect on the first contact surface 212, preventing the first contact surface 212 from closing along the circumference of the air inlet 410 to form a continuous ring, which can further reduce the contact area between the baffle 310 and the base 200, and further reduce the adhesive force at the stress weak point.

[0071] In some embodiments, the contact surface of the baffle 310 and / or the contact surface of the base 200 is a non-smooth rough surface, and the roughness of the contact surface Ra ≥ 1.6 μm. Since uneven micropores or texture structures are formed on the rough contact surface, the attachment area between the baffle 310 and the base 200 can be further reduced, and a stress weak point can be formed between the baffle 310 and the base 200, thereby minimizing the resistance of the baffle 310 leaving the base 200.

[0072] In some embodiments, by reducing the contact area between the baffle 310 and the base 200, and opening a concave cavity 250 on the contact surface 212 to form a stress weak point, and by designing the structure of the one-way valve 300 to reduce the elastic force generated when the baffle 310 leaves the base 200, the above-mentioned measures can reduce the resistance of the baffle 310 to open the air inlet 410, and finally reduce the threshold pressure corresponding to the baffle 310 opening the air inlet 410. For example, the range of the threshold pressure is 10 Pa to 100 Pa, and the range of the threshold pressure is preferably 30 Pa to 70 Pa, and the specific value of the threshold pressure can be 30 Pa, 40 Pa or 70 Pa, etc. When the threshold pressure is set to 30 Pa to 70 Pa, the baffle 310 can quickly open the air inlet 410 when the pressure difference is only about 70 Pa. There is no need for the user to draw a strong suction to form a higher air pressure difference, thereby preventing the baffle 310 from being separated from the base 200 due to insufficient suction force, thereby improving the response sensitivity of the atomizer 10 to the user's suction.

[0073] After the baffle 310 fully opens the air inlet 410, the maximum distance H between the baffle 310 and the contact surface 212 is 0.3 mm to 1.5 mm, and the specific value of the maximum distance H can be 0.3 mm, 1 mm or 1.5 mm, etc. By setting the above maximum distance H, the gas from the air inlet 410 can enter the air flow channel 400 above the baffle 310 through the space corresponding to the maximum distance H, ensuring that there is enough external gas to carry smoke for the user to inhale, meeting the user's requirements for different suction amounts.

[0074] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An atomizer, used in an electronic atomization device for users to inhale, characterized in that: The atomizer comprises: an air flow channel, including an air inlet and an air outlet; an atomizing core, at least a portion of which is located in the air flow channel; a base through which the air inlet passes; and A one-way valve, comprising a baffle elastically connected to the base; the baffle has a closed state and an open state; under normal circumstances, the baffle is in a closed state, and the baffle covers the air inlet; when a suction action occurs at the air outlet, the baffle is in an open state, allowing airflow to pass through; The base has an upper surface, and the baffle has a lower surface. When the baffle is in a closed state, the upper surface is opposite to the lower surface; the upper surface and / or the lower surface is partially convex or partially concave to reduce the contact area between the baffle and the base; The base and / or the baffle are provided with a concave cavity, and when the baffle is in a closed state, the surfaces of the base and the baffle that press against each other are both contact surfaces, at least a portion of the concave cavity is located on the contact surface of the base and / or the contact surface of the baffle, and the concave cavity is connected to the air inlet to form a stress weak point; The concave cavity cuts off the contact surface of the base and / or the contact surface of the baffle, preventing the contact surface from closing along the circumference of the air inlet hole to form a continuous ring; the one-way valve is made of elastic plastic material.

2. The atomizer according to claim 1, characterized in that The upper surface is concave to form an annular groove, and the annular groove enables a part of the base to form a support tube, and the air inlet hole passes through the support tube. The blocking piece can be pressed against the support tube to cover the air inlet hole.

3. The atomizer according to claim 2, characterized in that The support tube has a contact surface, a first spacing surface and a second spacing surface, the contact surface is connected between the first and second spacing surfaces, the first and second spacing surfaces form a set cone angle and are both located on the side of the contact surface away from the baffle; when the baffle covers the air inlet hole, the contact surface is pressed against the lower surface of the baffle, and the first and second spacing surfaces are both spaced apart from the lower surface.

4. The atomizer according to claim 3, characterized in that The value range of the cone angle is 20° to 135°, and the value range of the contact surface width is 0.2 mm to 1 mm.

5. The atomizer according to claim 3, characterized in that The contact surface is recessed to form a cavity, the first spacing surface defines a portion of the boundary of the air inlet hole, and the cavity penetrates the first spacing surface and is communicated with the air inlet hole.

6. The atomizer according to claim 5, characterized in that The concave cavity passes through the second spacing surface and is communicated with the annular groove.

7. The atomizer according to claim 5, characterized in that The depth of the cavity is 0.01 mm to 0.5 mm.

8. The atomizer according to claim 1, characterized in that The base includes a boss, which is arranged on the upper surface and protrudes relative to the upper surface. When the baffle covers the air inlet, the surface of the boss facing the atomizer core is a contact surface pressed against the lower surface of the baffle, and the lower surface is spaced apart from a portion of the upper surface where the boss is not arranged.

9. The atomizer according to claim 1, characterized in that The baffle includes a convex strip, which is arranged on the lower surface and protrudes relative to the lower surface. When the baffle covers the air inlet, a portion of the upper surface is a contact surface pressed against the convex strip, and another portion of the upper surface is spaced apart from the lower surface.

10. The atomizer according to claim 1, characterized in that The surfaces of the base and the blocking sheet that press against each other are both contact surfaces, and a countersunk hole is formed in a depression on the contact surface.

11. The atomizer according to claim 1, characterized in that The surfaces of the base and the baffle that press against each other are both contact surfaces, and the contact surfaces are rough surfaces with a roughness Ra≥1.6 μm.

12. The atomizer according to claim 1, characterized in that The one-way valve further comprises a fixed end and an elastic arm, wherein the elastic arm is connected between the fixed end and the baffle, the fixed end is fixedly connected to the base, and the baffle can swing relative to the fixed end following the elastic arm.

13. The atomizer according to claim 12, characterized in that The elastic arm has a first curved surface and a second curved surface with opposite bending directions, and the distance between the first curved surface and the second curved surface decreases from the edge portion to the middle portion of the elastic arm.

14. The atomizer according to claim 12, characterized in that Relative to the fixed end and the blocking piece, the elastic arm has the smallest thickness.

15. The atomizer according to claim 12, characterized in that The thickness of the elastic arm is 0.1 mm to 0.8 mm, the length of the elastic arm is 0.02 mm to 2 mm, and the width of the elastic arm is 0.5 mm to 3 mm.

16. The atomizer according to claim 12, characterized in that Along the width direction of the elastic arm, the edge of the elastic arm maintains a set distance from the edge of the fixed end and the edge of the blocking piece respectively.

17. The atomizer according to claim 12, characterized in that The fixed end is provided with a through hole extending along the thickness direction thereof, and the through hole is used for installing the fixed end.

18. The atomizer according to claim 1, characterized in that When the baffle opens the air inlet, the maximum distance between the portion of the base that can press against the baffle and the baffle is 0.3 mm to 1.5 mm.

19. The atomizer according to claim 1, characterized in that When the air pressure difference formed by the suction action on the two opposite sides of the baffle is greater than a threshold pressure, the baffle is in an open state, and the threshold pressure is 10Pa-100Pa.

20. The atomizer according to claim 19, characterized in that The threshold pressure is 30 Pa to 70 Pa.

21. An electronic atomization device, characterized in that: The invention comprises a power supply assembly and the atomizer according to any one of claims 1 to 20, wherein the power supply assembly is provided with a receiving cavity capable of accommodating the atomizer.

22. The electronic atomization device according to claim 21, characterized in that: The atomizer is detachably connected to the power supply assembly.

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