Electronic atomization device and its atomizer

Abstract

The present invention relates to an electronic atomization device and its atomizer. The atomizer includes a liquid storage shell with a liquid storage cavity formed therein and a heating base disposed in the liquid storage shell. An air exchange channel, a liquid suction slot opening, a liquid storage tank, and an air exchange inlet are formed on the outer surface of the heating base. One end of the air exchange channel is communicated with the liquid storage cavity, and the other end of the air exchange channel is respectively communicated with the liquid suction slot opening and the air exchange inlet; the liquid storage tank is communicated with the liquid suction slot opening to suck the liquid matrix to the liquid storage tank through capillary action. The air exchange channel is provided with an air exchange inlet and a liquid suction slot opening. Among them, the air exchange inlet is used to introduce external air, and the liquid suction slot opening is used to suck the liquid matrix to the liquid storage tank through capillary action, so as to separate air exchange from liquid storage and prevent the liquid matrix from blocking the air exchange channel.

Description

Technical Field

[0001] The present invention relates to the field of atomization, and more particularly to an electronic atomization device and an atomizer thereof. Background Art

[0002] An electronic atomization device mainly consists of an atomizer and a power supply device. Usually, an air exchange groove is provided in the atomizer to balance the air pressure in the liquid storage cavity. However, the amount of condensate stored in the air exchange groove is limited. When the air exchange groove is full of liquid, it will be sucked back into the liquid storage cavity, causing pressure fluctuations in the liquid storage cavity during the suction process and affecting the liquid supply. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an improved atomizer and an electronic atomization device having the atomizer in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the present invention to solve its technical problems is to construct an atomizer, which includes a liquid storage shell with a liquid storage cavity formed inside and a heating base arranged in the liquid storage shell; an air exchange channel, a liquid suction groove opening, a liquid storage groove and an air exchange inlet are formed on the outer surface of the heating base, one end of the air exchange channel is communicated with the liquid storage cavity, and the other end of the air exchange channel is respectively communicated with the liquid suction groove opening and the air exchange inlet; the liquid storage groove is communicated with the liquid suction groove opening to suck the liquid matrix to the liquid storage groove through capillary action.

[0005] In some embodiments, the width of the air exchange inlet is greater than the width of the liquid suction groove opening.

[0006] In some embodiments, the width of the liquid suction groove opening is 0.3 - 0.6 mm.

[0007] In some embodiments, the depth of the liquid suction groove opening is 0.3 - 0.6 mm.

[0008] In some embodiments, the width of the air exchange inlet is 0.6 - 1.5 mm.

[0009] In some embodiments, the depth of the air exchange inlet is 0.3 - 0.6 mm.

[0010] In some embodiments, the air exchange channel is formed at one end of the heating base close to the liquid storage cavity, and the liquid storage groove is formed at one end of the heating base away from the liquid storage cavity.

[0011] In some embodiments, the air exchange channel includes a plurality of air exchange grooves extending along the circumferential direction of the heating base.

[0012] In some embodiments, the air exchange inlet and the liquid suction groove opening are respectively located on the circumferential two sides of the plurality of air exchange grooves.

[0013] In some embodiments, the ventilation inlet is in communication with one of the plurality of ventilation grooves, and the liquid suction tank opening is in communication with another one of the plurality of ventilation grooves; or,

[0014] The ventilation inlet and the liquid suction tank opening are respectively communicated with two opposite ends in the circumferential direction of one of the ventilation grooves.

[0015] In some embodiments, the liquid suction tank opening is in communication with one of the plurality of ventilation grooves closest to the liquid storage tank.

[0016] In some embodiments, the width of each ventilation groove is 0.3 - 0.6 mm, and the depth is 0.3 - 0.6 mm.

[0017] In some embodiments, a tension partition groove communicating with the ventilation inlet is further formed on the outer surface of the heating base.

[0018] In some embodiments, the liquid storage tank includes a plurality of sub - liquid storage tanks extending along the circumferential direction of the heating base.

[0019] In some embodiments, the plurality of sub - liquid storage tanks are communicated with each other through the tension partition groove.

[0020] In some embodiments, at least one opening is formed on the side wall of the heating base, and each sub - liquid storage tank is in communication with the at least one opening.

[0021] In some embodiments, the width of the tension partition groove is greater than the widths of the ventilation channel and the liquid storage tank.

[0022] In some embodiments, the width of the tension partition groove is greater than the width of the ventilation inlet.

[0023] In some embodiments, the atomizer further includes a liquid suction body disposed in the liquid storage housing and in liquid - guiding communication with the liquid storage cavity, and at least a part of the liquid suction body is received in the heating base.

[0024] In some embodiments, the liquid storage tank is in communication with the liquid suction body.

[0025] In some embodiments, the atomizer further includes a base disposed at one end of the liquid storage housing and cooperatively connected with the heating base, and the liquid suction body is received between the heating base and the base.

[0026] The present invention also provides an electronic atomization device, including the atomizer according to any one of the above and a power supply device electrically connected to the atomizer.

[0027] Implementing the present invention has at least the following beneficial effects: The ventilation channel is provided with a ventilation inlet and a liquid suction groove opening. Among them, the ventilation inlet is used to introduce external air, and the liquid suction groove opening is used to suck the liquid matrix into the liquid storage tank through capillary action, so as to separate ventilation from liquid storage and prevent the liquid matrix from blocking the ventilation channel. Description of the Drawings

[0028] The present invention will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0029] Figure 1 is a three-dimensional structural schematic diagram of an electronic atomization device in some embodiments of the present invention;

[0030] Figure 2 is a longitudinal sectional structural schematic diagram of an atomizer in the first embodiment of the present invention;

[0031] Figure 3 is Figure 2 a three-dimensional structural schematic diagram of the heating component in;

[0032] Figure 4 is Figure 3 the A-A sectional structural schematic diagram of the heating component shown;

[0033] Figure 5 is Figure 3 the B-B sectional structural schematic diagram of the heating component shown;

[0034] Figure 6 is Figure 3 the exploded structural schematic diagram of the heating component shown;

[0035] Figure 7 is Figure 6 a three-dimensional structural schematic diagram of the base in;

[0036] Figure 8 is Figure 7 the simulation noise distribution cloud map of the base shown;

[0037] Figure 9 is Figure 6 a three-dimensional structural schematic diagram of the seal in;

[0038] Figure 10 is Figure 6 a three-dimensional structural schematic diagram of the heating base in;

[0039] Figure 11 is Figure 10 the side view of the heating base shown;

[0040] Figure 12 Shows Figure 3 the gas-liquid two-phase distribution diagram of the liquid storage and ventilation structure when the suction stops during the simulation analysis of the heating component shown;

[0041] Figure 13 shows Figure 3 the ventilation pressure curve graph of the shown heating component;

[0042] Figure 14 shows the schematic perspective view of the heating component in some embodiments of the prior art;

[0043] Figure 15 shows Figure 14 the ventilation pressure curve graph of the shown heating component;

[0044] Figure 16 shows the top view of the base in the first alternative of the present invention;

[0045] Figure 17 is Figure 16 the simulation noise distribution contour map of the shown base;

[0046] Figure 18 shows the top view of the base in some embodiments of the prior art;

[0047] Figure 19 is Figure 18 the simulation noise distribution contour map of the shown base;

[0048] Figure 20 shows the schematic perspective view of the base in the second alternative of the present invention;

[0049] Figure 21 is Figure 20 the longitudinal structure schematic diagram of the shown base;

[0050] Figure 22 shows Figure 21 the condensate flow schematic diagram of the shown base;

[0051] Figure 23 shows the schematic perspective view of the seal in the third alternative of the present invention;

[0052] Figure 24 shows the schematic perspective view of the seal in the fourth alternative of the present invention. Detailed Embodiments

[0053] For a clearer understanding of the technical features, objectives, and effects of the present invention, the detailed embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Many specific details are set forth in the following description in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0054] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the products of the present invention are customarily placed during use. It is only for the convenience of describing the present invention 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 therefore should not be construed as a limitation to the present invention.

[0055] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0056] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention may be understood according to specific circumstances.

[0057] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0058] Figure 1The electronic atomization device 1 in some embodiments of the present invention is shown. The electronic atomization device 1 can be used to inhale aerosol, and may include an atomizer 100 and a power supply device 200 electrically connected to the atomizer 100. The power supply device 200 is used to supply power to the atomizer 100, and the atomizer 100 is used to accommodate a liquid matrix and heat and atomize the liquid matrix after being powered on to generate aerosol. The atomizer 100 is longitudinally disposed above the power supply device 200, and it can be connected to the power supply device 200 in a detachable or non-detachable manner.

[0059] As Figure 2 shown, the atomizer 100 in the first embodiment of the present invention may include a liquid storage shell 10 and a heating component 20 accommodated in the liquid storage shell 10. A liquid storage cavity 110 for storing a liquid matrix and an air outlet channel 120 for outputting aerosol are formed in the liquid storage shell 10. The heating component 20 includes a base component 30, an atomization core 40, and a heating seat component 50. Among them, the atomization core 40 is accommodated in the space formed between the base component 30 and the heating seat component 50. The atomization core 40 is in liquid conduction communication with the liquid storage cavity 110 and in gas conduction communication with the air outlet channel 120, and is used to heat and atomize the liquid matrix adsorbed from the liquid storage cavity 110 to generate aerosol. An atomization cavity 420 is formed between the base component 30 and the atomization core 40, which is used to realize the mixing of aerosol and air.

[0060] Specifically, the liquid storage shell 10 may include a shell 11 with an open lower end and an air outlet pipe 12 longitudinally disposed in the shell 11. The shell 11 is cylindrical, and its cross-section may be generally in the shape of a narrow and long ellipse or a racetrack shape. An annular liquid storage cavity 110 is defined between the inner wall surface of the shell 11 and the outer wall surface of the air outlet pipe 12.

[0061] The air outlet pipe 12 is connected to the inner side of the top wall of the shell 11 and can be coaxially arranged with the shell 11. The inner wall surface of the air outlet pipe 12 defines the air outlet channel 120. In this embodiment, the air outlet pipe 12 and the shell 11 are integrally formed, for example, they can be integrally formed by injection molding. In other embodiments, the air outlet pipe 12 and the shell 11 can also be formed separately and then assembled together.

[0062] As Figure 2-7 shown, the atomization core 40 includes a liquid absorbent 41 and a heating element 42 disposed on the liquid absorbent 41. The liquid absorbent 41 is in liquid conduction communication with the liquid storage cavity 110, and is used to absorb the liquid matrix from the liquid storage cavity 110 and conduct the liquid matrix to the heating element 42. The heating element 42 is electrically connected to the power supply device 200, and is used to heat and atomize the liquid matrix adsorbed in the liquid absorbent 41 to generate aerosol after being powered on and heated.

[0063] The absorbing liquid 41 can be made of a material having a porous capillary structure, such as porous absorbing ceramics and absorbing cotton. The absorbing liquid 41 has a absorbing surface 411 and a heating surface 412. The heating surface 412 is used to set the heating element 42, and the absorbing surface 411 is used to absorb the liquid matrix from the liquid storage chamber 110 and conduct the liquid matrix to the heating surface 412 through the porous capillary structure inside the absorbing liquid 41. Specifically, in the present embodiment, the absorbing liquid 41 is a bowl-shaped porous absorbing ceramic. The absorbing surface 411 is located on the side of the absorbing liquid 41 facing the liquid storage chamber 110, and the heating surface 412 is located on the side of the absorbing liquid 41 facing away from the liquid storage chamber 110. The heating element 42 is arranged on the heating surface 412, that is, the heating element 42 is arranged on the side of the absorbing liquid 41 facing the base assembly 30.

[0064] The base assembly 30 may include a base 31 and an electrode column 33 longitudinally extending through the base 31. The base 31 is embedded in the lower end opening of the shell 11 to seal and cover the lower end opening of the shell 11. The base 31 may include a plate-shaped main body 311, a cylindrical side wall 312 extending upward from the outer periphery of the main body 311, and two spaced support arms 314 extending upward from the upper end surface of the main body 311. The two support arms 314 may be respectively located at two opposite sides of the main body 311 along the length direction, and may be used to engage with the heating seat 52. The upper end surface of the main body 311 and the inner wall surface of the cylindrical side wall 312 define a liquid storage space 3120, which can store a certain amount of condensate, thereby further reducing leakage.

[0065] Further, the base 31 also includes an air intake boss 313 extending upward from the upper end surface of the main body 311. The air intake boss 313 is arranged in the cylindrical side wall 312, and its outer wall surfaces on both sides along the width direction can be respectively combined with the inner wall surfaces on both sides along the width direction of the cylindrical side wall 312 into one. The top surface of the air intake boss 313 is concave and formed with a plurality of air intake holes 3130 so that external air can enter the atomizing chamber 420. The plurality of air intake holes 3130 can be distributed in an array, and while ensuring sufficient air intake, the surface tension film formed on the plurality of air intake holes 3130 can also play a role in reducing liquid leakage. In addition, since the air intake holes 3130 are formed on the air intake boss 313, the upper end surface of the air intake holes 3130 is higher than the bottom surface of the liquid storage space 3120, thereby further reducing the risk of liquid leakage from the air intake holes 3130.

[0066] Furthermore, the plurality of intake small holes 3130 may include a plurality of first intake small holes 3131 and a plurality of second intake small holes 3132 surrounding the plurality of first intake small holes 3131. The plurality of first intake small holes 3131 and the plurality of second intake small holes 3132 may be respectively arranged in an annular (such as circular, elliptical, square, or polygonal) array and evenly spaced. The number of the first intake small holes 3131 may be less than the number of the second intake small holes 3132. In some embodiments, the number of the first intake small holes 3131 may be 3 to 6, and the number of the second intake small holes 3132 may be 6 to 15. In this embodiment, there are four first intake small holes 3131, and the four first intake small holes 3131 are evenly and symmetrically distributed along the center of the intake boss 313; there are ten second intake small holes 3132, and the ten second intake small holes 3132 are evenly and symmetrically distributed along the center of the intake boss 313.

[0067] The first intake small holes 3131 and the second intake small holes 3132 have different intake cross-sectional areas. By setting the plurality of intake small holes 3130 in a form of unequal cross-sections, the pneumatic noise can be reduced. Further, in this embodiment, the intake cross-sectional area of the first intake small holes 3131 is smaller than that of the second intake small holes 3132, and the plurality of first intake small holes 3131 and the plurality of second intake small holes 3132 are both arranged in an annular array, that is, the structural form of the intake small holes 3130 in this embodiment is a form of "large holes on the outer periphery and small holes in the middle". The plurality of first intake small holes 3131 located in the inner circle have a smaller intake cross-sectional area, which can effectively reduce the leakage of condensate; the plurality of second intake small holes 3132 located in the outer circle have a larger intake cross-sectional area, which can balance the intake resistance and noise to ensure sufficient intake area and appropriate intake resistance.

[0068] The lower end surface of the main body portion 311 may also be concave upward to form an intake hole 3110. The intake hole 3110 extends longitudinally, and the upper end of the intake hole 3110 is connected to the lower ends of the plurality of intake small holes 3130, thereby forming an intake passage 315 through which outside air can enter the atomization chamber 420. Further, the intake cross-sectional area of the intake hole 3110 is larger than the sum of the intake cross-sectional areas of the plurality of intake small holes 3130.

[0069] An electrode through-hole 3111 through which a power supply electrode post 33 passes is further provided on the main body portion 311. There are usually two electrode posts 33, and the two electrode posts 33 are respectively electrically connected to the two poles of the heating element 42. The upper end face of the electrode post 33 is in contact conduction with the heating element 42. In addition, the electrode post 33 also functions to support the atomization core 40. Correspondingly, there are two electrode through-holes 3111, and the two electrode posts 33 are respectively disposed longitudinally in the two electrode through-holes 3111. In this embodiment, the two electrode through-holes 3111 are located in the cylindrical side wall 312 and can be respectively located on both sides of the air intake boss 313 in the length direction. Further, the upper end face of each electrode through-hole 3111 can be higher than the bottom surface of the liquid storage space 3120, so as to reduce the risk of liquid leakage from the electrode through-hole 3111.

[0070] In some embodiments, the atomizer 100 may further include a fixing cover 60. The fixing cover 60 is sleeved outside the base 31 and the lower end of the housing 11 to fix the base 31. Further, the fixing cover 60 can be snap-connected to the housing 11, so as to realize the fixation between the fixing cover 60 and the housing 11. The fixing cover 60 can be made of a metal material. The metal material has a smaller thermal expansion and contraction deformation when the temperature changes, making the fixation between the various components of the atomizer 100 more stable and reliable, and the sealing performance better. In addition, the fixing cover 60 made of a metal material can also be used for magnetic attraction connection with the power supply device 200. It can be understood that in other embodiments, the fixing cover 60 may not be provided, and the base 31 and the housing 11 can also be fixed to each other by means of snap connection, screw connection, interference fit connection, etc.

[0071] Further, as Figure 3-6 and Figure 9 shown, the base assembly 30 further includes a sealing member 32 sleeved outside the base 31. The sealing member 32 is sealingly disposed between the inner wall surface of the housing 11 and the outer wall surface of the base 31, and it can be integrally formed of an elastic material such as silica gel. The sealing member 32 may include a body portion 321, two socket portions 322 respectively extending upward from two opposite sides of the body portion 321, and a boss portion 323 disposed between the other two opposite sides of the body portion 321. The body portion 321 is annular and is sealingly sleeved between the outer wall surface of the cylindrical side wall 312 and the inner wall surface of the housing 11. The outer peripheral surface of the body portion 321 can be in interference fit with the inner peripheral surface of the bottom end of the housing 11 to further improve the sealing performance.

[0072] The two socket parts 322 are respectively formed by extending upward from the outer edges on both sides of the body part 321 along the long side direction (length direction). The two socket parts 322 are respectively sleeved on the two sides of the heating base 52, and can limit the long side direction of the seal 32 to prevent the long side direction of the seal 32 from being assembled skew. Since the two socket parts 322 only occupy the space inside the housing 11 along the long side direction and do not occupy the space inside the housing 11 along the short side direction, this structure is conducive to realizing the thin and light design of the atomizer 100.

[0073] The outer wall surfaces on both sides of the boss part 323 are integrally combined with the inner wall surfaces on both sides of the body part 321 along the short side direction (width direction). The boss part 323 can be embedded into the bottom of the heating base 52, so as to limit the short side direction of the seal 32 and prevent the short side direction of the seal 32 from being assembled skew.

[0074] At least one air inlet through hole 3230 communicating with a plurality of air inlet small holes 3130 and the atomization chamber 420 is formed longitudinally on the boss part 323. In this embodiment, there is one air inlet through hole 3230, and the one air inlet through hole 3230 is coaxially arranged with the boss part 323 and the body part 321. It can be understood that in other embodiments, the number of the air inlet through holes 3230 is not limited to one, and it may not be coaxially arranged with the boss part 323 and / or the body part 321. The boss part 323 is located above the plurality of air inlet small holes 3130. When liquid explosion occurs on the heating surface 412 of the liquid absorbent 41, the boss part 323 can block part of the liquid explosion droplets from directly exploding onto the surface of the air inlet small holes 3130, thereby reducing liquid leakage. In addition, when the suction stops, the flue gas flows back under the action of negative pressure. The flowing-back flue gas will be affected by the boss part 323, and most of the flowing-back flue gas does not directly contact the air inlet small holes 3130, thereby reducing the formation of condensate at the air inlet small holes 3130 and reducing the risk of liquid leakage.

[0075] The air inlet through hole 3230 may include an air inlet section 3231 communicating with a plurality of air inlet small holes 3130 and an air outlet section 3232 communicating with the atomization chamber 420. In this embodiment, the air inlet through hole 3230 is in a contracted shape, that is, the cross-sectional area of the air inlet section 3231 is larger than the cross-sectional area of the air outlet section 3232. The contracted-shaped air inlet through hole 3230 can converge the air flow during air inlet, improve the flow rate, and enable the aerosol in the atomization chamber 420 to be quickly carried out by the air flow. When the suction stops, the flue gas flows back under the action of negative pressure. The flow rate of the flue gas decreases when flowing from the air outlet section 3232 to the air inlet section 3231, so that the flue gas reflux can be reduced. In addition, the cross-sectional area of the upper air outlet section 3232 is small, and the condensate is not easy to leak out, so that the liquid leakage can be reduced. Further, the cross-sectional area of the air outlet at the upper end (the end far from the air inlet section 3231) of the air outlet section 3232 can be smaller than the cross-sectional area of the air inlet boss 313.

[0076] To further reduce liquid leakage, the upper end face of the air outlet section 3232 (the end face facing the atomization chamber 420) can be higher than the upper end face of the surrounding boss portion 323. Further, a curved surface can be used for smooth transition connection between the air inlet section 3231 and the air outlet section 3232, so as to reduce the air flow resistance at the connection between the air inlet section 3231 and the air outlet section 3232, avoid generating eddy currents at this connection, and thus effectively reduce the air flow noise.

[0077] The cross-sectional shapes of the air inlet section 3231 and the air outlet section 3232 can be the same or different. In this embodiment, the cross-sectional shape of the air inlet section 3231 is circular, and the aperture of the air inlet section 3231 gradually decreases from bottom to top (from the end far from the air outlet section 3232 to the end close to the air outlet section 3232). The air outlet section 3232 is a straight through-hole with a racetrack circular cross-sectional shape, that is, the major axis length and the minor axis length of the air outlet section 3232 remain unchanged in the longitudinal direction. The air inlet section 3231 and the air outlet section 3232 are smoothly transitionally connected through a connection section 3233. The connection section 3233 has a first end communicating with the air inlet section 3231 and a second end communicating with the air outlet section 3232. The cross-sectional shape and size of the first end are consistent with the cross-sectional shape and size of the upper end of the air inlet section 3231, and the cross-sectional shape and size of the second end are consistent with the cross-sectional shape and size of the lower end of the air outlet section 3232. The cross-sectional shape of the connection section 3233 gradually changes from a circle at the first end to a racetrack circle at the second end. It can be understood that in other embodiments, the cross-sectional shapes of the air inlet section 3231 and the air outlet section 3232 can also be other shapes such as circular, elliptical, square, etc.

[0078] Two electrode holes 3233 are also provided on the boss portion 323 for two electrode posts 33 to pass through respectively. The two electrode holes 3233 can be located on both sides of the air inlet through-hole 3230 along the length direction. Two avoidance holes 3210 are respectively formed on the seal 32 corresponding to the two support arms 314. The two support arms 314 can respectively pass through the two avoidance holes 3210 and then be engaged with the heating base 52. Specifically, the extension length of the boss portion 323 along the length direction is less than the extension length of the main body portion 321 along the length direction. The two avoidance holes 3210 are respectively formed between the outer wall surfaces on both sides of the boss portion 323 along the length direction and the inner wall surfaces on both sides of the main body portion 321 along the length direction.

[0079] Further, a plurality of diversion grooves 3234 are formed by the concave top surface of the boss portion 323 and / or the concave bottom surface of the boss portion 323. The plurality of diversion grooves 3234 connect the intake through hole 3230 and the two electrode holes 3233 to the avoidance hole 3210. The diversion grooves 3234 are in the structure of tiny grooves, which can have a strong capillary force on the liquid matrix, adsorb the liquid leakage at the intake through hole 3230 and the two electrode holes 3233 under the action of the capillary force, and guide the liquid leakage to the avoidance hole 3210, so as to drop into the liquid storage space 3120 through the avoidance hole 3210, thereby further reducing the liquid leakage.

[0080] As Figure 3-6 and Figure 10-11 shown, the heating base assembly 50 includes a heating base 52, and the heating base 52 is cooperatively connected with the base 31 to fix the atomization core 40. In this embodiment, both the heating base 52 and the base 31 are made of plastic material, and the heating base 52 and the base 31 are buckled together.

[0081] At least one liquid inlet hole 520 communicating the liquid absorber 41 with the liquid storage cavity 110 is formed on the heating base 52. The liquid matrix in the liquid storage cavity 110 can supply liquid to the liquid absorption surface 411 of the liquid absorber 41 through the at least one liquid inlet hole 520. The atomization core 40 can be received in the heating base 52, and at least one opening 527 is further formed on the side wall of the heating base 52 to expose at least part of the side surface of the liquid absorber 41. In this embodiment, there are two liquid inlet holes 520, and the two liquid inlet holes 520 are respectively located on both sides of the heating base 52 along the length direction. There are two openings 527, and the two openings 527 are respectively located on both sides of the heating base 52 along the width direction.

[0082] Further, at least one liquid storage and ventilation structure 521 is formed on the outer surface of the heating base 52. The at least one liquid storage and ventilation structure 521 is communicated with the liquid storage cavity 110 and can be used to balance the air pressure in the liquid storage cavity 110. When the air pressure in the liquid storage cavity 110 is too low, the outside air can enter the liquid storage cavity 110 through the liquid storage and ventilation structure 521 to avoid the situation of poor liquid supply caused by too low air pressure in the liquid storage cavity 110 and prevent dry burning.

[0083] Specifically, in this embodiment, there are two liquid storage and ventilation structures 521, and the two liquid storage and ventilation structures 521 are respectively formed on both sides of the heating base 52 along the length direction, and the two liquid storage and ventilation structures 521 can be rotationally symmetrically arranged with respect to the central axis of the heating base 52.

[0084] Each liquid storage and ventilation structure 521 includes a ventilation channel 522 formed at one end of the heating base 52 close to the liquid storage cavity 110, a liquid storage tank 524 and a tension partition groove 526 formed at one end of the heating base 52 away from the liquid storage cavity 110, a liquid suction groove opening 523 connecting the ventilation channel 522 and the liquid storage tank 524, and a ventilation inlet 525 connecting the ventilation channel 522 and the tension partition groove 526. One end of the ventilation channel 522 is connected to the liquid storage cavity 110, and the other end is respectively connected to the liquid storage tank 524 and the tension partition groove 526 through the liquid suction groove opening 523 and the ventilation inlet 525. Among them, the ventilation inlet 525 is used to introduce external air into the ventilation channel 522, and the liquid suction groove opening 523 is used to suck the liquid matrix (such as the condensate or leakage in the ventilation channel 522, the condensate or leakage formed on the atomization core 40, or the condensate or leakage formed at other parts) into the liquid storage tank 524 through capillary action, so as to separate ventilation from liquid storage and prevent the liquid matrix from blocking the ventilation channel 522. In addition, the width of the ventilation inlet 525 is greater than the width of the liquid suction groove opening 523, so that the liquid suction groove opening 523 forms a greater capillary force, so as to suck the liquid matrix in the ventilation channel 522 into the liquid storage tank 524 through the liquid suction groove opening 523, realizing gas-liquid separation.

[0085] Specifically, the ventilation channel 522 includes a plurality of ventilation grooves 5221 extending along the circumferential direction of the heating base 52, a gas guiding groove 5222 connected to the plurality of ventilation grooves 5221 and extending longitudinally, and a gas return groove 5223 connected to the gas guiding groove 5222 and extending transversely. Among them, the plurality of ventilation grooves 5221 can be formed by the inner concave of the outer peripheral surface of one end of the heating base 52 close to the liquid storage cavity 110, and the plurality of ventilation grooves 5221 can be arranged in parallel at intervals. The gas guiding groove 5222 is formed by the inner concave of the side surface of the heating base 52. One end of the gas guiding groove 5222 is connected to the uppermost ventilation groove 5221, and the other end extends upward to the top surface of the heating base 52. The gas return groove 5223 is formed by the inner concave of the top surface of the heating base 52. One end of the gas return groove 5223 is connected to the gas guiding groove 5222, and the other end is connected to the liquid inlet hole 520 on the corresponding side.

[0086] The ventilation grooves 5221, the gas guiding grooves 5222, and the gas return grooves 5223 are all tiny groove structures, which can not hinder the flow of gas, but hinder the flow of liquid matrix, ensuring that the ventilation channel 522 has the function of ventilation and liquid blocking, and reducing the possibility of the liquid matrix in the liquid storage cavity 110 leaking through the ventilation channel 522. In some embodiments, the width of the ventilation grooves 5221, the gas guiding grooves 5222, and the gas return grooves 5223 can be 0.3-0.6 mm, and the depth can be 0.3-0.6 mm.

[0087] The liquid storage tank 524 includes a plurality of sub-liquid storage tanks 5241 extending along the circumferential direction of the heating base 52. The plurality of sub-liquid storage tanks 5241 can be formed by the inner concave of the outer peripheral surface of the end of the heating base 52 away from the liquid storage cavity 110, and the plurality of sub-liquid storage tanks 5241 can be arranged in parallel at intervals. Further, the circumferential two ends of each sub-liquid storage tank 5241 can extend to two openings 527 respectively and are respectively communicated with the two openings 527, so that the sub-liquid storage tank 5241 is communicated with the liquid absorber 41. When the liquid storage tank 524 stores condensate (or liquid matrix leaks from the ventilation channel 522 to the liquid storage tank 524), the capillary force between the liquid absorber 41 and the liquid storage tank 524 will suck the condensate (or liquid matrix) onto the liquid absorber 41, reducing the risk of the condensate being sucked back from the ventilation channel 522 to the liquid storage cavity 110 and leaking into the power supply device 200.

[0088] The sub-liquid storage tank 5241 is a tiny groove structure, which has a strong capillary force on the liquid matrix and can adsorb the condensate in the ventilation groove 5221 under the action of the capillary force. In some embodiments, the width of the sub-liquid storage tank 5241 can be 0.3 - 0.6 mm, and the depth can be 0.3 - 0.6 mm.

[0089] The tension isolation groove 526 has a wider width relative to the ventilation channel 522 and the liquid storage tank 524, and is used to prevent the condensate in the liquid storage tank 524 from being sucked back into the liquid storage cavity 110, thus causing pressure fluctuations in the liquid storage cavity 110 and affecting the liquid supply, making the ventilation pressure more stable. The tension isolation groove 526 can extend longitudinally, its lower end can be communicated with the lowermost sub-liquid storage tank 5241, and its upper end is communicated with the uppermost sub-liquid storage tank 5241, so that the plurality of sub-liquid storage tanks 5241 are communicated with each other through the tension isolation groove 526. The width of the tension isolation groove 526 can be greater than the width of the ventilation inlet 525. In some embodiments, the width of the tension isolation groove 526 can be 1 - 3 mm, and the depth can be 0.5 - 1.2 mm.

[0090] The liquid suction slot opening 523 and the ventilation inlet 525 can be respectively communicated with the two circumferential sides of the end of the ventilation channel 522 far from the liquid storage cavity 110. In some embodiments, the ventilation inlet 525 can be communicated with one of a plurality of ventilation slots 5221, and the liquid suction slot opening 523 can be communicated with another one of the plurality of ventilation slots 5221. Specifically, in this embodiment, the plurality of ventilation slots 5221 can include a first ventilation slot 5224 located at the bottommost and a second ventilation slot 5225 located above the first ventilation slot 5224 and adjacent to the first ventilation slot 5224. The upper end of the liquid suction slot opening 523 can be communicated with one circumferential side of the first ventilation slot 5224, and the lower end can extend vertically downward to a sub-liquid storage tank 5241 located at the uppermost and be communicated with the sub-liquid storage tank 5241. The upper end of the ventilation inlet 525 can be communicated with the other circumferential side of the second ventilation slot 5225, and the lower end extends vertically downward to be communicated with the upper end of the tension partition slot 526. As Figure 11 shown by the arrow in, air enters the second ventilation slot 5225 from the ventilation inlet 525, then flows through a plurality of ventilation slots 5221 located above the second ventilation slot 5225 in sequence to the air guide slot 5222, and finally enters the liquid storage cavity 110 through the air return slot 5223, so as to balance the air pressure in the liquid storage cavity 110. In some embodiments, the width of the liquid suction slot opening 523 can be 0.3 - 0.6 mm, and the depth can be 0.3 - 0.6 mm. The width of the ventilation inlet 525 can be 0.6 - 1.5 mm, and the depth can be 0.3 - 0.6 mm.

[0091] It can be understood that in other embodiments, the ventilation inlet 525 and the liquid suction slot opening 523 can also be communicated with the same ventilation slot 5221, and the ventilation inlet 525 and the liquid suction slot opening 523 can be respectively communicated with the two circumferential ends of the one ventilation slot 5221 (such as the first ventilation slot 5224).

[0092] During the suction process, the liquid matrix is sucked from the liquid storage cavity 110 to the ventilation channel 522. When the liquid matrix is sucked to the ventilation inlet 525, the surface tension needs to be overcome. At this time, the ventilation inlet 525 plays a role in preventing the liquid matrix from being pumped out of the ventilation channel 522, and at the same time, a circle of the first ventilation slot 5224 at the bottom will absorb a part of the liquid matrix. Figure 12 The gas-liquid two-phase distribution diagram in the liquid storage and ventilation structure 521 at the moment of stopping suction is shown. Among them, the test conditions are suction for 3 s and stop for 27 s, and the liquid volume fraction in the liquid storage and ventilation structure 521 at the moment of stopping after suction for 3 s is tested. It can be seen from the gas-liquid two-phase distribution diagram that at the moment of stopping suction, the liquid phase (mainly from the leakage from the liquid storage cavity 110 during the suction process) is mainly distributed in the ventilation channel 522, and the liquid phase distribution in the liquid storage tank 524 is very little or basically no liquid phase distribution, so as to well prevent the liquid matrix from flowing out of the ventilation channel 522.

[0093] Further, for another example Figure 4-6 As shown, the heating base assembly 50 further includes a sealing sleeve 53 sleeved above the heating base 52 and a gasket 51 received in the heating base 52 and disposed between the heating base 52 and the liquid absorbing body 41. Both the sealing sleeve 53 and the gasket 51 can be made of elastic materials such as silica gel. The gasket 51 can be in the shape of an annular sheet, and the gasket 51 is sealingly abutted between the heating base 52 and the liquid absorbing body 41, which can play a role in buffering, ensuring tightness and preventing liquid leakage. The sealing sleeve 53 is sleeved on the upper part of the heating base 52, and is used for sealing the lower end of the liquid storage cavity 110 and sealingly isolating the atomization cavity 420 from the liquid storage cavity 110. The outer peripheral surface of the sealing sleeve 53 can be in interference fit with the inner peripheral surface of the housing 11 to further improve the sealing performance. The top surface of the sealing sleeve 53 can be recessed to form a vent hole 530, and the lower end of the air outlet pipe 12 can be embedded in the vent hole 530, and the outer peripheral surface of the lower end of the air outlet pipe 12 is sealingly fitted with the hole wall of the vent hole 530, thereby sealingly isolating the air outlet channel 120 from the liquid storage cavity 110.

[0094] Figure 14 Some embodiments of the prior art heat generating assemblies are shown. The heat generating assembly includes an atomization top seat 115, an atomization core 12 and an atomization base 116. Among them, a ventilation groove 112 is provided on the outer surface of the atomization top seat 115, and the ventilation groove 112 includes a first sub-ventilation groove 1121 and a second sub-ventilation groove 1122. A drainage groove 114 and a liquid storage groove 113 are provided on the outer surface of the atomization base 116. One end of the drainage groove 114 is communicated with the ventilation groove 112, and the other end of the drainage groove 114 is communicated with the liquid storage groove 113. The liquid storage groove 113 includes a plurality of sub-liquid storage grooves 1131.

[0095] Figure 13 、 Figure 15 respectively show Figure 3 、 Figure 14 The ventilation pressure curve graphs of the heat generating assembly shown, where the horizontal axis is the suction time and the vertical axis is the pressure in the liquid storage cavity. In this test experiment, the test conditions are sucking for 3 s and stopping for 27 s, and the power is 6 W; Figure 3 In the heat generating assembly shown, there are four ventilation grooves 5221, the width of each ventilation groove 5221 is 0.35 mm, the depth is 0.4 mm, the width of the ventilation inlet 525 is 1 mm, the depth is 0.4 mm, and the width of the tension partition groove 526 is 2 mm, the depth is 0.8 mm; Figure 14 In the heat generating assembly, there are four first sub-ventilation grooves 1121, the width of each first sub-ventilation groove 1121 is 0.35 mm, the depth is 0.4 mm, and the width of the inlet at the end where the drainage groove 114 is communicated with the first sub-ventilation groove 1121 is 0.6 mm, the depth is 0.4 mm. From Figure 13 、 Figure 15 it can be seen that Figure 3The ventilation pressure fluctuation range of the shown heating component is smaller, and most of them change the air once per breath (i.e., the ventilation time is shorter and the ventilation speed is faster). Figure 14 The ventilation pressure fluctuation range of the shown heating component is larger, and most of them change the air once every two breaths (i.e., the ventilation time is longer and the ventilation speed is slower). In comparison, Figure 3 The shown heating component has higher ventilation stability. In addition, since it does not pass through the first ventilation slots 5224 at the bottom during ventilation, it has a shorter ventilation path, thus having a smaller ventilation pressure and a faster ventilation speed, and can effectively avoid the situation of burnt smell and reduced smoke volume due to poor ventilation.

[0096] Figure 16 The base 31 in the first alternative of the present invention is shown. The main difference from the above first embodiment is that in this embodiment, the intake cross-sectional area of the first intake small holes 3131 is larger than that of the second intake small holes 3132, that is, the structural form of the intake small holes 3130 is in the form of "small holes on the outer periphery and a large hole in the middle".

[0097] Figure 18 The base 31 in some embodiments of the prior art is shown. In this base 31, the intake cross-sectional area of the first intake small holes 3131 is equal to that of the second intake small holes 3132.

[0098] Figure 8 、 Figure 17 、 Figure 19 respectively show Figure 7 、 Figure 16 、 Figure 18 the simulation noise distribution nephograms of the shown bases. In the test experiment, Figure 7 、 Figure 16 、 Figure 18 the shown bases all include four first intake small holes 3131 and ten second intake small holes 3132; Figure 7 In, the aperture of the first intake small holes 3131 is 3.5 mm, the aperture of the second intake small holes 3132 is 4.5 mm, and its maximum aerodynamic noise is 61.37 dB; Figure 16 In, the aperture of the first intake small holes 3131 is 4.5 mm, the aperture of the second intake small holes 3132 is 3.5 mm, and its maximum aerodynamic noise is 66.52 dB; Figure 18 In, the apertures of the first intake small holes 3131 and the second intake small holes 3132 are both 3.5 mm, and its maximum aerodynamic noise is 70.83 dB. From Figure 8 、 Figure 17 、 Figure 19 it can be seen that Figure 7 、 Figure 16 the intake small hole structures with staggered large and small holes shown can significantly reduce the aerodynamic noise during suction, whileFigure 18 The shown intake small hole structure has relatively large pneumatic noise. In addition, Figure 7 The intake small hole structure shown in the form of "large holes on the outer periphery and small holes in the middle" has the lowest pneumatic noise during suction and the best uniform air flow diversion effect. Therefore, during design, the intake cross-sectional area of the first intake small hole 3131 can be made smaller than that of the second intake small hole 3132. By selecting appropriate numbers and sizes (such as hole diameter or intake cross-sectional area, etc.) of the first intake small hole 3131 and the second intake small hole 3132, the pneumatic noise during the operation of the atomizer 100 can be made less than 61.4 dB.

[0099] Figure 20-21 Figure 7 shows the base 31 in the second alternative of the present invention. The main difference from the above-mentioned first embodiment is that, in this embodiment, the upper surface 3133 of the intake boss 313 is in a convex shape. Specifically, the upper surface 3133 can be a spherical surface. The multiple intake small holes 3130 on the intake boss 313 extend downward from the upper surface 3133. In other embodiments, the upper surface 3133 can also be in other shapes such as a frustum shape. The second intake small holes 3132 located on the periphery can be arranged close to the outer edge of the upper surface 3133.

[0100] Combined with Figure 22 As shown in Figure 12, by designing the intake boss 313 into a convex shape with small holes on the inner side and large holes on the outer side, the condensate film boundary 35 formed at the second intake small holes 3132 on the periphery can have a substantially spherical shape and be connected to the condensate stored in the liquid storage space 3120, so that the condensate has a tendency to flow to the outside of the intake small holes 3130, and its condensate flow direction is as shown by the arrow in Figure 22 Figure 14. When the intake small holes 3130 are covered with condensate, since the aperture of the first intake small hole 3131 in the middle is small, it is difficult for the condensate to flow out; while the condensate of the second intake small holes 3132 on the periphery is connected to the condensate stored in the base 31 and is easily drained away by the condensate stored in the base 31, so that it can be diffused in the liquid storage space 3120 of the base 31 in time, so that the intake small holes 3130 are not easily blocked.

[0101] Figure 23 Figure 18 shows the seal 32 in the third alternative of the present invention. The main difference from the above-mentioned first embodiment is that, in this embodiment, no electrode hole 3233 is provided on the boss portion 323. In addition, on both side surfaces of the boss portion 323 along the length direction, concave portions are respectively formed to form avoidance grooves 3235 communicating with the avoidance holes 3210. This structure can reduce the influence on the shape and size during the design of the intake through holes 3230.

[0102] Figure 24The seal 32 in the fourth alternative of the present invention is shown. The main difference from the above-mentioned first embodiment is that in this embodiment, there is no electrode hole 3233 provided on the boss portion 323, and this structure can reduce the influence on the shape and size during the design of the intake through hole 3230.

[0103] It can be understood that the above technical features can be used in any combination without limitation.

[0104] The above embodiments only represent the preferred embodiments of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention should fall within the scope covered by the claims of the present invention.

Claims

1. An atomizer, characterized in that, it includes a liquid storage shell (10) with a liquid storage cavity (110) formed inside and a heating base (52) arranged in the liquid storage shell (10); an air exchange channel (522), a liquid suction groove opening (523), a liquid storage tank (524) and an air exchange inlet (525) are formed on the outer surface of the heating base (52), the air exchange channel (522) is formed at one end of the heating base (52) close to the liquid storage cavity (110), the liquid storage tank (524) is formed at one end of the heating base (52) far from the liquid storage cavity (110), one end of the air exchange channel (522) is communicated with the liquid storage cavity (110), the other end of the air exchange channel (522) is respectively communicated with the liquid suction groove opening (523) and the air exchange inlet (525), and the capillary force of the liquid suction groove opening (523) is greater than the capillary force of the air exchange inlet (525); the liquid storage tank (524) is communicated with the liquid suction groove opening (523) and is communicated with the air exchange channel (522) through the liquid suction groove opening (523) to suck the liquid matrix into the liquid storage tank (524) by capillary force.

2. The atomizer according to claim 1, characterized in that, the width of the air exchange inlet (525) is greater than the width of the liquid suction groove opening (523).

3. The atomizer according to claim 1, characterized in that, the width of the liquid suction groove opening (523) is 0.3 - 0.6 mm.

4. The atomizer according to claim 1, characterized in that, the depth of the liquid suction groove opening (523) is 0.3 - 0.6 mm.

5. The atomizer according to claim 1, characterized in that, the width of the air exchange inlet (525) is 0.6 - 1.5 mm.

6. The atomizer according to claim 1, characterized in that, the depth of the air exchange inlet (525) is 0.3 - 0.6 mm.

7. The atomizer according to claim 1, characterized in that, the air exchange channel (522) includes a plurality of air exchange grooves (5221) extending along the circumferential direction of the heating base (52).

8. The atomizer according to claim 7, characterized in that, the air exchange inlet (525) and the liquid suction groove opening (523) are respectively located on the circumferential two sides of the plurality of air exchange grooves (5221).

9. The atomizer according to claim 7, characterized in that, the air exchange inlet (525) is communicated with one of the plurality of air exchange grooves (5221), and the liquid suction groove opening (523) is communicated with another one of the plurality of air exchange grooves (5221); or, the air exchange inlet (525) and the liquid suction groove opening (523) are respectively communicated with the two opposite circumferential ends of one of the air exchange grooves (5221).

10. The atomizer according to claim 7, characterized in that, the liquid suction groove opening (523) is communicated with the one of the plurality of air exchange grooves (5221) closest to the liquid storage tank (524).

11. The atomizer according to claim 7, characterized in that, Each of the ventilation grooves (5221) has a width of 0.3-0.6 mm and a depth of 0.3-0.6 mm.

12. The atomizer according to claim 1, It is characterized in that The outer surface of the heating seat (52) is also formed with a tension isolation groove (526) which is connected to the ventilation inlet (525).

13. The atomizer according to claim 12, It is characterized in that The liquid storage tank (524) comprises a plurality of sub-liquid storage tanks (5241) extending along the circumferential direction of the heating seat (52).

14. The atomizer according to claim 13, It is characterized in that The multiple sub-liquid storage tanks (5241) are connected via the tension isolation groove (526).

15. The atomizer according to claim 13, It is characterized in that At least one opening (527) is formed on the side wall of the heating seat (52), and each of the sub-liquid storage tanks (5241) is connected to the at least one opening (527).

16. The atomizer according to claim 12, It is characterized in that The width of the tension isolation groove (526) is greater than the width of the ventilation channel (522) and the liquid storage groove (524).

17. The atomizer according to claim 12, It is characterized in that The width of the tension isolation groove (526) is greater than the width of the ventilation inlet (525).

18. The atomizer according to claim 1, It is characterized in that The atomizer further comprises a liquid absorbing liquid (41) disposed in the liquid storage shell (10) and in liquid-conducting communication with the liquid storage chamber (110); the liquid absorbing liquid (41) is at least partially accommodated in the heating seat (52).

19. The atomizer according to claim 18, It is characterized in that The liquid storage tank (524) is in communication with the liquid suction chamber (41).

20. The atomizer according to claim 18, It is characterized in that The atomizer further comprises a base (31) arranged at one end of the liquid storage shell (10) and connected to the heating seat (52), and the liquid absorption liquid (41) is accommodated between the heating seat (52) and the base (31).

21. An electronic atomization device, It is characterized in that It comprises the atomizer according to any one of claims 1 to 20 and a power supply device electrically connected to the atomizer.

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