Patent Publication Number: US-2022218038-A1

Title: Electronic atomization device and atomizer thereof

Description:
CROSS REFERENCE 
     The present application is a continuation-application of International (PCT) Patent Application No. PCT/CN2019/109705, filed on Sep. 30, 2019, the entire contents of which are hereby incorporated by reference in its entirety. 
    
    
     TECHNICAL FIELD 
     The present disclosure relates to the field of electronic atomization device technologies, and in particular to an electronic atomization device and an atomizer thereof. 
     BACKGROUND 
     In the related art, an electronic atomization device is usually configured to heat and atomize cigarette liquid stored therein, and form atomized gas for a user to inhale. The user generally inhales the atomized gas through an air outlet channel in an air flow channel of the electronic atomization device. When the atomized air enters the air outlet channel, the atomized gas will partially condense when it meets a side wall of the air outlet channel to form a condensate. The condensate will easily enter an atomization cavity by gravity and leak out from a bottom of the atomization cavity to an outside of a housing. In addition, the cigarette liquid in an atomization element in the atomization cavity may also leak from the bottom of the atomization cavity to the outside of the housing, resulting in a poor user experience. 
     SUMMARY OF THE DISCLOSURE 
     The technical problem to be solved by the present disclosure is to provide an improved atomizer, and further to provide an improved electronic atomization device. 
     A technical solution used in the present disclosure to solve its technical problems is: to propose a nebulizer, defining an atomization cavity and an air outlet channel communicated with the atomization cavity; wherein a bottom of the atomization cavity is arranged with a liquid storage structure; the liquid storage structure is communicated with the atomization cavity and comprises at least one second liquid absorbing groove facing the atomization cavity; the at least one second liquid absorbing groove is configured to suck a liquid medium leaking from the atomization cavity and/or the air outlet channel by capillary forces. 
     In some embodiments, each second liquid absorbing groove extends along a lateral direction of the atomization cavity. 
     In some embodiments, the number of the at least one second liquid absorbing groove is more than one, and the plurality of second liquid absorbing grooves are arranged side by side and spaced apart. 
     In some embodiments, the liquid storage structure further comprises at least one branch groove; the at least one branch groove is crossed and connected to the plurality of second liquid absorbing grooves. 
     In some embodiments, a width of each branch groove is greater than a width of each second liquid absorbing groove. 
     In some embodiments, the atomizer further comprises a base; wherein the base comprises the liquid storage structure, and the atomization cavity is arranged on the base; the plurality of second liquid absorbing grooves and the at least one branch groove are arranged on a side of the base facing the atomization cavity. 
     In some embodiments, the side of the base facing the atomization cavity defines a groove; the plurality of second liquid absorbing grooves and the at least one branch groove are arranged on a bottom of the groove. 
     In some embodiments, the atomizer further comprises: a first sealing member, sleeved on the base; an atomization element; and an atomization shell sleeved on the base and configured to install the atomization element; wherein an inside of the atomization shell defines the atomization cavity; the first sealing member is sleeved on a periphery of the atomization shell. 
     In some embodiments, the liquid storage structure further comprises a plurality of guide grooves; wherein each guide groove is communicated with a corresponding second liquid absorbing groove and a corresponding branch groove; the plurality of guide grooves are arranged on a side wall of the groove and extends along a longitudinal direction of the base; an opening of each guide groove away from the corresponding second liquid absorbing groove and the corresponding branch groove is arranged facing a connection of the atomization shell and the first sealing member; the plurality of guide grooves are configured to suck the liquid medium leaking from the connection by capillary forces. 
     In some embodiments, an inner side wall of the groove is arranged with a step for assembly with the atomization shell. 
     In some embodiments, a width of each second liquid absorbing groove is 0.05-1 mm. 
     In some embodiments, a depth of each second liquid absorbing groove is greater than or equal to 0.1 mm. 
     In some embodiments, a width of each guide groove is 0.05-1 mm. 
     The present disclosure further proposes an electronic atomization device, defining an atomization cavity and an air outlet channel communicated with the atomization cavity; wherein a bottom of the atomization cavity is arranged with a liquid storage structure; the liquid storage structure is communicated with the atomization cavity and comprises at least one second liquid absorbing groove facing the atomization cavity; the at least one second liquid absorbing groove is configured to suck a liquid medium leaking from the atomization cavity and/or the air outlet channel by capillary forces. 
     In some embodiments, each second liquid absorbing groove extends along a lateral direction of the atomization cavity. 
     In some embodiments, the liquid storage structure further comprises at least one branch groove; the at least one branch groove is crossed and connected to the at least one second liquid absorbing groove. 
     In some embodiments, the electronic atomization device further comprises a base; wherein the base comprises the liquid storage structure, and the atomization cavity is arranged on the base; the at least one second liquid absorbing groove and the at least one branch groove are arranged on a side of the base facing the atomization cavity. 
     In some embodiments, the side of the base facing the atomization cavity defines a groove; the at least one second liquid absorbing groove and the at least one branch groove are arranged on a bottom of the groove. 
     In some embodiments, the electronic atomization device further comprises: a first sealing member, sleeved on the base; an atomization element; and an atomization shell sleeved on the base and configured to install the atomization element; wherein an inside of the atomization shell defines the atomization cavity; the first sealing member is sleeved on a periphery of the atomization shell. 
     In some embodiments, the liquid storage structure further comprises a plurality of guide grooves; wherein each guide groove is communicated with a corresponding second liquid absorbing groove and a corresponding branch groove; the plurality of guide grooves are arranged on a side wall of the groove and extends along a longitudinal direction of the base; an opening of each guide groove away from the corresponding second liquid absorbing groove and the corresponding branch groove is arranged facing a connection of the atomization shell and the first sealing member; the plurality of guide grooves are configured to suck the liquid medium leaking from the connection by capillary forces. 
     The electronic atomization device and its atomizer of the present disclosure have the following beneficial effects: the atomizer is arranged with the liquid storage structure communicated to the atomization cavity at the bottom of the atomization cavity, and at least one second liquid absorbing groove of the liquid storage structure with capillary effect is defined opposite to the atomization cavity, so as to suck and store the liquid leaking out from the bottom of the atomization cavity, and then prevent the liquid from leaking outside the shell, thus improving the user experience. 
     The electronic atomization device has the advantages of high user experience and low production cost. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments. 
         FIG. 1  is a perspective structural schematic view of an electronic atomization device according to an embodiment of the present disclosure. 
         FIG. 2  is a perspective structural schematic view of an atomizer of the electronic atomization device as shown in  FIG. 1 . 
         FIG. 3  is a partial exploded schematic view of the atomizer as shown in  FIG. 2 . 
         FIG. 4  is a cross-sectional view of the atomizer as shown in  FIG. 2 . 
         FIG. 5  is a partial enlarged schematic view of the atomizer as shown in  FIG. 4 . 
         FIG. 6  is a perspective structural schematic view of a housing of the atomizer as shown in FIG.  4 . 
         FIG. 7  is another perspective structural schematic view of the housing of the atomizer as shown in  FIG. 6 . 
         FIG. 8  is a perspective structural schematic view of a base of the atomizer as shown in  FIG. 4 . 
         FIG. 9  is a structural schematic view of an atomizer according to an embodiment of the present disclosure. 
         FIG. 10  is an exploded schematic view of the atomizer as shown in  FIG. 9 . 
         FIG. 11  is a schematic sectional view of the atomizer of the atomizer as shown in  FIG. 9 . 
         FIG. 12  is a structural schematic view of an atomization assembly, a sleeve, a liquid absorbing structure, and a seal according to an embodiment of the present disclosure. 
         FIG. 13  is a structural schematic view of an air outlet tube according to an embodiment of the present disclosure. 
         FIG. 14  is another structural schematic view of the air outlet tube as shown in  FIG. 13 . 
         FIG. 15  is a structural schematic view of an atomization assembly, a sleeve, a transverse liquid storage groove, and a seal according to an embodiment of the present disclosure. 
         FIG. 16  is a structural schematic view of a longitudinal liquid storage groove according to an embodiment of the present disclosure. 
         FIG. 17  is another structural schematic view of the longitudinal liquid storage groove as shown in  FIG. 16 . 
     
    
    
     DETAILED DESCRIPTION 
     In order to have a clearer understanding of the technical features, objectives and effects of the present disclosure, the specific embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. 
     Position limitations of “upper”, “lower”, “top”, and “bottom” shown in the drawings are “upper”, “lower”, “top”, and “bottom” indicated by the present disclosure. It should be understood that the orientation or positional relationship indicated by “upper”, “lower”, etc., is based on the orientation or positional relationship shown in the drawings, constructed and operated in a specific orientation, and is only for the convenience of describing the technical solution, but not indicate that the corresponding device or element shall have a specific orientation. Therefore, the orientation or positional relationship cannot be understood as a limitation of the present disclosure. 
       FIGS. 1 to 4  show a first embodiment of the electronic atomization device of the present disclosure. The electronic atomization device is applied to an atomization of liquid medium such as atomization cigarette liquid and medicine. The electronic atomization device includes an atomizer and a power supply device mechanically and electrically connected to the atomizer. The atomizer is configured for heating and atomizing the liquid medium, and the power supply device is configured for powering the atomizer. In some embodiments, the atomizer and the power supply device are detachably connected. The power supply device includes a power supply case; a battery arranged in the power supply case; a conductive contact arranged in the power supply case, connected to the battery, and connected to the atomizer; and a control circuit arranged in the power supply case and electrically connected to the battery and the atomizer. 
     As shown in  FIGS. 3 to 7 , in the embodiments, the atomizer includes a housing  10 , a base  20 , an atomization assembly  30 , a first sealing member  40 , an air-liquid balancing element  50 , and a liquid guiding element  60 . The housing  10  is sleeved on a periphery of the atomization assembly  30 , and an inner side of the housing  10  is configured to define a liquid storage cavity  111  for accommodating the liquid medium. In the embodiments, the liquid medium is cigarette liquid. The base  20  is configured for an installation of the atomization assembly  30 , and the housing  10  is sleeved on the base  20 . The atomization assembly  30  is arranged in the housing  10  and on the base  20 . The first sealing member  40  is arranged on the base  20  and is configured to seal a connection between the atomization assembly  30  and the base  20 . The air-liquid balancing element  50  is arranged in a main body  11  at a lower part of the liquid storage cavity  111 , is sleeved on the periphery of the atomization assembly  30 , and is arranged on the base  20 . The air-liquid balancing element  50  connects the liquid storage cavity  111  with the outside, so as to balance the air pressure in the liquid storage cavity  111 . The number of the liquid guiding elements  60  may be two. It can be understood that in other embodiments, the number of the liquid guiding elements  60  may be one or more. The liquid guiding element  60  is inserted through the air-liquid balancing element  50 , and is configured to connect the liquid storage cavity  111  with the atomization assembly  30  for providing liquid medium to the atomization assembly  30 . It can be understood that in other embodiments, both the air-liquid balancing element  50  and the liquid guiding element  60  may be omitted. 
     Further, in the embodiment, the housing  10  includes a main body  11  and an air outlet tube  12 . The main body  11  and the air outlet tube  12  are integrally formed by injection molding. It can be understood that in other embodiments, the air outlet tube  12  and the main body  11  are separate structures. The main body  11  is sleeved on the base  20  and the atomization assembly  30 , and a space is defined within the main body  11  above the atomization assembly  30 . The space is configured to define the liquid storage cavity  111 . The air outlet tube  12  is longitudinally arranged in the main body  11  and is connected to the atomization assembly  30 . The air outlet tube  12  is arranged at a central axis of the body  11 . It can be understood that in other embodiments, the air outlet tube  12  is arranged on a side of the main body  11  and is not limited to the central axis. The air outlet tube  12  may also be arranged obliquely. An air outlet channel  121  is defined on an inner side of the air outlet tube  12 , and the air outlet channel  121  is arranged along an axial direction of the air outlet tube  12 . A side wall of the air outlet channel  121  is integrally formed with the housing  10 . When a user inhales, an atomized gas may reach the mouth of the user through the air outlet channel  121 . A second end  1212  of the air outlet channel  121  forms a cigarette holder for the user to inhale the atomized gas, and a first end  1211  of the air outlet channel  121  is inserted into the atomization assembly  30 . At least one first liquid absorbing groove  122  is defined on an inner side wall of the air outlet channel  121 . In the embodiments, the number of the at least one first liquid absorbing groove  122  may be more than one. In some embodiments, the number of the first liquid absorbing grooves  122  is not limited to multiple, and it may also be one. The first liquid absorbing groove  122  has a capillary function, which is configured to suck the condensate formed by condensation on the side wall of the air outlet channel  121 . The condensate flows to the atomization assembly  30  under the action of gravity. The atomization assembly  30  atomizes the condensate flowing down from the first liquid absorbing groove  122  again, thereby improving the utilization rate of the liquid medium. 
     Further, in the embodiments, the plurality of first liquid absorbing grooves  122  are arranged on an inner side wall of the air outlet tube  12  and are arranged at intervals along the air outlet channel  121  in a circumferential direction. When the atomized gas reaches an air outlet through the air outlet channel  121 , airflow around the air outlet channel  121  meets the inner side wall of the air outlet tube  12  to condense to form the condensate. At this time, the first liquid absorbing groove  122  may suck the condensate in by capillary function. In the embodiment, the first liquid absorbing groove  122  is arranged along a longitudinal direction of the air outlet channel  121 , and extends from the second end  1212  of the air outlet channel  121  toward the first end  1211  of the air outlet channel  121 . The first liquid absorbing groove  122  is parallel to the central axis of the air outlet channel  121  and is connected to the atomization assembly  30  in a liquid conducting manner, such that the condensate flows to the top of the atomization assembly  30  in the direction of the first liquid absorbing groove  122  under the action of gravity and drops on the atomization assembly  30  to be atomized again, thereby improving the utilization rate of the liquid medium, and preventing the liquid medium from being inhaled into the user&#39;s mouth, thus improving the user experience. In the embodiments, the first liquid absorbing groove  122  is not limited to being arranged longitudinally, and it may be arranged spirally or inclined. 
     In the embodiments, an outlet  1221  is defined on an end surface of the first end  1211  of the air outlet channel  121 . The outlet  1221  is in communication with the first liquid absorbing groove  122  and is in communication with the atomization assembly  30 . The liquid in the first liquid absorbing groove  122  may drop onto the atomization assembly  30  through the outlet  1221 . 
     In the embodiments, the depth of the first liquid absorbing groove  122  is gradually reduced along the direction away from the outlet  1221 . A bottom surface of the first liquid absorbing groove  122  is a slope inclined toward the direction of the outlet  1221 . In this way, an upper part of the first liquid absorbing groove  122  stores less liquid, and a lower part of the first liquid absorbing groove  122  stores more liquid, thereby preventing the liquid in the upper part of the first liquid absorbing groove  122  from being inhaled into the user&#39;s mouth. The bottom surface of the first liquid absorbing groove  122  is set as an inclined surface inclined toward the direction of the outlet  1221 , thereby increasing the resistance of the lower liquid to be sucked out, further preventing the liquid from being inhaled into the user&#39;s mouth. Specifically, in the embodiments, the depth of each first liquid absorbing groove  122  may be greater than or equal to 0.1 mm. In the embodiments, the width of each first liquid absorbing groove  122  is gradually increased along an opening direction of the first liquid absorbing groove  122 , such that the first liquid absorbing groove  122  has a narrow inside and a wide opening. This feature further facilitates the flow of liquid to the atomization assembly  30  along the first liquid absorbing groove  122 . In the embodiments, the width of each liquid absorbing groove  122  may be 0.05-1 mm. It is to be understood that the opening direction is perpendicular to and directed to the central axis of the air outlet channel  121 . 
     As shown in  FIGS. 4 to 8 , in the embodiments, the base  20  includes a base body  21 , a support assembly  22  arranged on the base body  21 , and a liquid storage structure  23 . The shape and size of a cross-section of the base body  21  are adapted to the shape and size of an opening end of the housing  10 . The base body  21  is configured to block the opening of the housing  10 . The base  20  defines a groove  211 . Specifically, the groove  211  is defined on a side of the base body  21  opposite to an atomization cavity  311  of the atomization assembly  30 , thereby forming the liquid storage structure  23  at the bottom of the atomization cavity  311 . The support assembly  22  includes two sets of support pillars arranged at intervals. The two sets of support pillars are arranged on two opposite sides of the groove  211 , which are configured to support an atomization element  32  of the atomization assembly  30 . The liquid storage structure  23  is arranged in the groove  211  and communicates with the atomization cavity  311  of the atomization assembly  30 . The liquid storage structure  23  is configured to store the liquid medium and prevent the liquid medium from leaking. 
     Further, in the embodiments, the liquid storage structure  23  includes a plurality of second liquid absorbing grooves  231 , a branch groove  232 , and a plurality of guide grooves  233 . The plurality of second liquid absorbing grooves  231  are arranged side by side and spaced at a bottom of the groove  211 . The plurality of second liquid absorbing grooves  231  are arranged opposite to the atomization cavity  311 , which have a capillary function and can suck from the liquid medium dropping from the atomization cavity  311  or the air outlet channel  121 . The number of the second liquid absorbing grooves  231  is not limited to multiple, and it may be one. The branch groove  232  is arranged on the bottom surface of the groove  211  and is intersected with the plurality of second liquid absorbing grooves  231 . The branch groove  232  crosses and communicates with the second liquid absorbing grooves  231 , thereby achieving diversion and enabling faster suction of the liquid medium. The plurality of guide grooves  233  are arranged on a side wall of the groove  211  at intervals, are arranged corresponding to the second liquid absorbing grooves  231  and the branch groove  232 , and are connected to the second liquid absorbing grooves  231  and the branch groove  232 . The plurality of guide grooves  233  have a capillary function and are configured to pour liquid into the second liquid absorbing grooves  231 . 
     Further, in the embodiments, each second liquid absorbing groove  231  extends laterally along the bottom surface of the groove  211 , that is, extends laterally along the atomization cavity  311 . In this way, the flow direction of the liquid medium may be controlled, thereby effectively preventing liquid leakage. In the embodiments, the width of each second liquid absorbing groove  231  is 0.05-1 mm, and the depth of each second liquid absorbing groove  231  is greater than 0.1 mm. It can be understood that in other embodiments, the depth of each second liquid absorbing groove  231  may be equal to 0.1 mm. 
     Further, in the embodiments, the branch groove  232  is perpendicular to each second liquid absorbing groove  231  and divides each second liquid absorbing groove  231  into two sections. The width of the branch groove  232  is greater than the width of each second liquid absorbing groove  231 , thereby increasing the liquid suction rate and preventing the liquid medium from penetrating to the outside from an electrode pore. 
     Further, in the embodiments, the guide grooves  233  are arranged on the side wall of the groove  211  and extend along the longitudinal direction of the base  20 . Each guide groove  233  communicates with a corresponding second liquid absorbing groove  231  and the branch groove  232 . The guide grooves  233  are configured to guide the liquid medium to the second liquid absorbing grooves  231  and the branch groove  232 . In the embodiments, an opening at an end of each guide groove  233  away from the corresponding second liquid absorbing groove  231  and the branch groove  232  is arranged outside the atomization cavity  311 , which is configured to suck liquid leakage from the outside of the atomization cavity  311 . In the embodiments, a step  2111  is arranged on the inner side wall of the groove  211 , and the step is configured for mating and assembling with an atomization shell  31  of the atomization assembly  30  to improve the compactness of the assembly. In the embodiments, the guide grooves  233  have a capillary function, which is configured to suck the leakage and cause the leakage to the second absorbing grooves  231 . In the embodiments, the width of each guide groove  233  may be 0.05-1 mm. It can be understood that in other embodiments, the width of each guide groove  233  is not limited to 0.05-1 mm. 
     Further, in the embodiments, the atomization assembly  30  includes an atomization shell  31  and an atomization element  32 . The atomization shell  31  is sleeved on the base  20  and inserted into the groove  211 . The atomization shell  31  is configured for arranging and fixing the atomization element  32 . An inner side of the atomization shell  31  defines an atomization cavity  311 . The atomization cavity  311  is arranged on the upper part of the base  20  and is directly connected to the first liquid absorbing groove  122 . Liquid leakage is prone to occurring at the position at which the atomization shell  31  contacts the atomization element  32 , and the liquid medium is easy to leak from the connection between a first sealing member  40  and the atomization shell  31 . The opening at the end of each guide groove  233  away from the corresponding second liquid absorbing groove  231  and the branch groove  232  is arranged opposite to the connection between the atomization shell  31  and the first sealing member  40 . Specifically, the opening directly faces the connection, which can suck the leakage by capillary force. The atomization element  32  passes through the atomization shell  31  in a transverse direction. The atomization element  32  includes an atomization core  321  passing through the atomization shell  31  and a heating element  322  surrounding the atomization core  321 . The atomization core  321  may be a cotton core. Two ends of the atomization core  321  are arranged on the two sets of support pillars on the base body  21  and are connected to the liquid guiding element  60  for liquid guiding. A conductive connection part of the heating element  322  penetrates the base  20  and is connected to an electrode  90 . In the embodiments, the heating element  322  may be a heating wire. 
     Further, in the embodiments, the first sealing member  40  is sleeved on the base  20  and is sleeved on a periphery of the atomization shell  31 . Specifically, the first sealing member  40  may be a sealing sleeve. The sealing sleeve may be a silicone sleeve or a rubber sleeve. It can be understood that in other embodiments, the sealing sleeve is not limited to a silicone sleeve or a rubber sleeve. 
     Further, in the embodiments, the air-liquid balancing element  50  is cylindrical, specifically, it is in a cylindrical shape with an oval or rectangular cross-section. An outer circumference of the air-liquid balancing element  50  is combined with the inner wall surface of the housing  10  by means of interference fit to seal the liquid storage cavity  111 . In the embodiments, the air-liquid balancing element  50  includes two through holes  51 , a liquid storage and air exchange structure  52  arranged on a periphery of each through hole  51 , and an air flow channel  53  arranged between the two through holes  51 . The liquid guiding elements  60  are inserted into the through holes  51 . The liquid storage and air exchange structure  52  is configured to communicate the liquid storage cavity  111  with the outside to balance the air pressure in the liquid storage cavity  111 . The liquid storage and air exchange structure  52  includes a plurality of liquid storage grooves  521  arranged side-by-side to generate capillary force on the liquid medium and two air return grooves. The air return groove are configured to store liquid to prevent leakage. The air return grooves are arranged in the longitudinal direction, transversely cut the liquid storage grooves  521 , and communicate with the liquid storage grooves  521  and the liquid storage cavity  111 , thereby supplying gas into the liquid storage cavity  111 . The air flow channel  53  communicates with the air outlet channel  121  to facilitate the communication between the air outlet channel  121  and the atomization cavity  311 . With the air-liquid balancing element  50 , a temperature ventilation process is formed, which prevents frying oil and burnt odor caused by long-term non-ventilation (insufficient liquid supply), and prevents large-particle droplets and liquid leakage phenomenon caused by sudden large-scale ventilation (excessive liquid supply). Further, by forming an independent ventilation channel and sealing the structural gap, the liquid leakage caused by capillary force of the gap and environmental changes may be prevented, and leakage and condensate may be prevented from being inhaled, thereby improving product yield. 
     Further, in the embodiments, each liquid guiding element  60  is arranged corresponding to the through hole  51  on the air-liquid balancing element  50 . The liquid guiding elements  60  are inserted into the through holes  51  and are arranged at both ends of the atomization core  321 . The liquid guiding elements  60  are connected to the atomization core  321  in a liquid conducting manner. The liquid guiding element  60  may be a cotton core. It is understood that in other embodiments, the liquid guiding element  60  is not limited to a cotton core. 
     Further, in the embodiments, the atomizer further includes a fixing sleeve  70  configured for fixing the conductive connection part of the heating element  322  and for positioning the conductive connection part of the heating element  322 . The conductive connecting part of the heating element  322  penetrates the fixing sleeve  70 . The fixing sleeve  70  defines a through hole  71  communicating with the atomization cavity  311 . The through hole  71  is arranged in the longitudinal direction and communicates with the air outlet channel  121  to facilitate gas circulation. In the embodiments, the fixing sleeve  70  may be a silicone sleeve. It can be understood that in other embodiments, the fixing sleeve  70  may be omitted. 
     Further, in the embodiments, the atomizer further includes a second sealing member  80 . The second sealing member  80  may be a sealing sleeve, which is sleeved on the air-liquid balancing element  50 . The second sealing member  80  defines relief holes facing the liquid guiding element  60  and the air outlet channel  121 . The second sealing member  80  may be a silicone sleeve or a rubber sleeve. 
     Further, in the embodiments, the atomizer further includes an electrode  90 . The electrode  90  includes two electrode columns. The two electrode columns are a positive electrode column and a negative electrode column, which are arranged side by side on the base body  211 . For each electrode column, an end is connected to the conductive connection part of the heating element  322  by a lead wire, and the other end is conductively connected to the power supply device. 
       FIGS. 9-12  show a second embodiment of the atomizer of the present disclosure. The present disclosure provides an atomizer, including: a base  20 ; a housing  10  sleeved on the base  20 , and sealed and connected to the base  20  to define a liquid storage cavity  111 ; an electrode  90  arranged on a bottom of the base  20 ; a liquid injection assembly  109  arranged on and penetrating the base  20  for filling the liquid storage cavity  111 ; an atomizer body arranged on the base  20 ; an air flow channel running through the entire atomizer; and a liquid absorbing structure  101 . Among them, the base includes a liquid storage structure, and the liquid storage structure refers to the first embodiment, which will not be repeated here. The atomizer body includes an atomization assembly  30 , and the air flow channel includes an air inlet channel  131 , an atomization cavity  311  and an air outlet channel  121 . The liquid absorbing structure  101  is arranged in the air outlet channel  121 , and the liquid absorbing structure  101  defines a plurality of liquid storage grooves  105  in a circumferential direction. The liquid storage groove  105  sucks a condensate in the air outlet channel  121  and/or an incomplete atomized cigarette liquid carried out during an inhaling process by capillary forces. In the embodiments, the material of the liquid absorbing structure  101  is one or more of PETG, PCTG, and PC. 
     Specifically, the liquid absorbing structure  101  includes a plurality of fins  104 . The fins  104  are arranged at intervals in parallel along a longitudinal direction, and a liquid storage groove  105  is defined between every two adjacent fins  104 . The width of the liquid storage groove  105  is small enough to generate a capillary force on the condensate, such that in the smoke generated during the inhaling process, the liquid droplets brought out by passing through the fin  104  structure will be trapped in the liquid storage groove  105 , and a liquid film is formed in the liquid storage groove  105 . In this way, the liquid droplets may be stored in the liquid storage groove  105  to prevent the leakage of liquid from being inhaled. 
     The atomization assembly  30  includes a cylindrical atomization core  321 , a liquid guiding cotton  323  surrounding the atomization core  321 , and a heating element  322  wound on the atomization core  321 . A conductive connection part of the heating element  322  penetrates the base  20  and is connected to the electrode  90 . In some embodiments, the heating element  322  may be a heating wire. When in use, the atomization core  321  sucks the cigarette liquid in the liquid storage cavity  111 , and the heating element  322  is energized to generate heat, such that the cigarette liquid in the atomization core  321  is atomized. The user inhales through an inhaling port of a top cover of the atomizer. Air enters the atomization core  321  from the air inlet channel  131  under the inhaling action, is mixed with the atomized cigarette liquid in the atomization core  321 , and is discharged from the inhaling port of the top cover of the atomizer after passing through the air outlet channel  121 . 
     In the embodiments, the liquid absorbing structure  101  includes a plurality of fins  104 . The fins  104  are arranged in parallel or non-parallel at intervals along the longitudinal direction, and a liquid storage groove  105  is defined between every two adjacent fins  104 . The width of the liquid storage groove  105  is small enough to generate a capillary force on the condensate, such that in the smoke generated during the inhaling process, the liquid droplets brought out by passing through the fin  104  structure will be trapped in the liquid storage groove  105 , and a liquid film is formed in the liquid storage groove  105 . In this way, the liquid droplets may be stored in the liquid storage groove  105  to prevent the leakage of liquid from being inhaled. The thickness of the fin  104  and the width of the liquid storage groove  105  are 0.1-0.5 mm, and in some embodiments 0.15-0.3 mm. 
     In order to prevent that too much cigarette liquid accumulated in the liquid storage groove  105  in the liquid absorbing structure  101  will be taken out along with the inhaling, in the embodiments, the liquid absorbing structure  101  includes: at least one return groove  106  extending in the longitudinal direction. At least one return groove  106  longitudinally intersects with at least part of the liquid storage groove  105 . When the liquid storage groove  105  accumulates too much cigarette liquid, the cigarette liquid may flow back to the atomization core  321  along the return groove  106  to be atomized again. Specifically, two return grooves  106  with the same diameter are defined on the inner wall of the liquid absorbing structure  101 . The return grooves  106  longitudinally extend from the next fin  104  of the top fin  104  of the liquid absorbing structure  101  to the bottom fin.  104 . The top fin  104  of the liquid absorbing structure  101  is configured to block the condensate in the return groove  106  from flowing to the air outlet channel  121 . 
     Further, as shown in  FIG. 12 , in order to make the refluxed cigarette liquid better be sucked by the atomization core  321  and re-atomized, the length of the bottom fin  104  of the liquid absorbing structure  101  extending to the central axis of the absorbing structure  101  is shorter than the length of an adjacent fin  104  extending to the central axis. 
     In some embodiments, the air outlet channel  121  and the atomization assembly  30  are arranged next to each other up and down. The liquid absorbing structure  101  and the air outlet channel  121  are an integral structure. The liquid storage groove  105  is defined on the inner wall surface of the air outlet channel  121 . In the embodiments, as shown in  FIG. 12 , the liquid absorbing structure  101  and the air outlet channel  121  are separate structures. The liquid absorbing structure  101  includes a cylindrical body, which is arranged directly above the atomization assembly  30 . The housing  10  includes a main body and an air outlet tube  12  longitudinally arranged in an internal cavity of the main body. The air inlet channel  131 , the atomization cavity  311 , the inner cavity of the liquid absorbing structure  101 , and the air outlet tube  12  form a complete air flow channel. 
     The liquid absorbing structure  101  is arranged directly above the atomization core  321  and is arranged next to the atomization core  321 . The reason of this arrangement is: when the electronic cigarette is heated, due to an oil film in the atomization process, bubbles generated during the atomization process may easily bring out the incompletely atomized cigarette liquid. When the smoke rises, the liquid absorbing structure directly above the atomization core  321  sucks and stores the liquid droplets carried in the smoke in the liquid storage groove, which greatly reduces the possibility of leakage being inhaled. 
     The plurality of fins  104  are arranged on the inner wall surface of the cylindrical body. As shown in  FIG. 12 , the cylindrical body includes a first part  102  and a second part (not shown) that are detachably enclosed together. The inner wall surface of the first part  102  is arranged with a plurality of first fins, and the inner wall surface of the second part is arranged with a plurality of second fins. Specifically, the liquid absorbing structure is cylindrical and may be formed by a combination of two half-cylinders, and the fins are fan-ring shaped. 
     The atomization assembly  30  and the liquid absorbing structure  101  may also be arranged in a same sleeve  107 , and the liquid absorbing structure  101  is arranged next to the atomization assembly  30 . A position of the sleeve  107  corresponding to the atomization assembly  30  defines at least one liquid inlet  110 , which is configured to allow the cigarette liquid in the liquid storage cavity  111  to enter the atomization core  321 . 
     In addition, in order to fix the atomization assembly  30  and the liquid absorbing structure  101  and make the installation more convenient, the outer side wall of the liquid absorbing structure  101  and the inner side wall of the sleeve  107  are closely arranged. In some embodiments, the liquid absorbing structure  101  and the sleeve  107  may be an integral structure. 
     In order to seal a connection between the sleeve  107  and the air outlet channel  121 , the sleeve  107  corresponding to the top of the liquid absorbing structure  101  is arranged with a sealing member  108  that is sealed and connected to the air outlet channel  121 . The seal member may be a silicone sleeve or a rubber sleeve. It can be understood that in other embodiments, the sealing member  108  is not limited to a silicone sleeve or a rubber sleeve. 
     The present disclosure also provides an electronic atomization device, as shown in  FIGS. 9-12 , which includes: a base  20 ; a housing  10  sleeved on the base  20 , and sealed and connected to the base  20  to define a liquid storage cavity  111 ; an electrode  90  arranged on a bottom of the base  20 ; a liquid injection assembly  109  arranged on and penetrating the base  20  for filling the liquid storage cavity  111 ; an atomizer body arranged on the base  20 ; an air flow channel running through the entire atomizer; and a liquid absorbing structure  101 . Among them, the atomizer body includes an atomization assembly  30 , and the air flow channel includes an air inlet channel  131 , an atomization cavity  311 , and an air outlet channel  121 . The liquid absorbing structure  101  is arranged in the air outlet channel  121 , and the liquid absorbing structure  101  defines a plurality of liquid storage grooves  105  in a circumferential direction. The liquid storage groove  105  sucks a condensate in the air outlet channel  121  and/or an incomplete atomized cigarette liquid carried out during an inhaling process by capillary forces. In the embodiments, the material of the liquid absorbing structure  101  is one or more of PETG, PCTG, and PC. The electronic atomization device may be a disposable atomization device with the base, housing, and atomizer body in an integrated structure, and may also be an atomization device with the base, housing, and atomizer body in a separate structure. 
     Specifically, the liquid absorbing structure  101  includes a plurality of fins  104 . The fins  104  are arranged at intervals in parallel along a longitudinal direction, and a liquid storage groove  105  is defined between every two adjacent fins  104 . The width of the liquid storage groove  105  is small enough to generate a capillary force on the condensate, such that in the smoke generated during the inhaling process, the liquid droplets brought out by the fin  104  structure will be trapped in the liquid storage groove  105 , and a liquid film is formed in the liquid storage groove  105 . In this way, the liquid droplets may be stored in the liquid storage groove  105  to prevent the leakage of liquid from being inhaled. 
     The atomization assembly  30  includes a cylindrical atomization core  321 , a liquid guiding cotton  323  surrounding the atomization core  321 , and a heating element  322  wound on the atomization core  321 . A conductive connection part of the heating element  322  penetrates the base  20  and is connected to the electrode  90 . In some embodiments, the heating element  322  may be a heating wire. When in use, the atomization core  321  sucks the cigarette liquid in the liquid storage cavity  111 , and the heating element  322  is energized to generate heat, such that the cigarette liquid in the atomization core  321  is atomized. The user inhales through an inhaling port of a top cover of the atomizer. Air enters the atomization core  321  from the air inlet channel  131  under the inhaling action, is mixed with the atomized cigarette liquid in the atomization core  321 , and is discharged from the inhaling port of the top cover of the atomizer after passing through the air outlet channel  121 . 
     In the embodiments, the liquid absorbing structure  101  includes a plurality of fins  104 . The fins  104  are arranged in parallel or non-parallel at intervals along the longitudinal direction, and a liquid storage groove  105  is defined between every two adjacent fins  104 . The width of the liquid storage groove  105  is small enough to generate a capillary force on the condensate, such that in the smoke generated during the inhaling process, the liquid droplets brought out by passing through the fin  104  structure will be trapped in the liquid storage groove  105 , and a liquid film is formed in the liquid storage groove  105 . In this way, the liquid droplets may be stored in the liquid storage groove  105  to prevent the leakage of liquid from being inhaled. The thickness of the fin  104  and the width of the liquid storage groove  105  are 0.1-0.5 mm, and in some embodiments 0.15-0.3 mm. 
     In order to prevent that too much cigarette liquid accumulated in the liquid storage groove  105  in the liquid absorbing structure  101  will be taken out along with the inhaling, in the embodiments, the liquid absorbing structure  101  includes: at least one return groove  106  extending in the longitudinal direction. At least one return groove  106  longitudinally intersects with at least part of the liquid storage groove  105 . When the liquid storage groove  105  accumulates too much cigarette liquid, the cigarette liquid may flow back to the atomization core  321  along the return groove  106  to be atomized again. Specifically, two return grooves  106  with the same diameter are defined on the inner wall of the liquid absorbing structure  101 . The return grooves  106  longitudinally extend from the next fin  104  of the top fin  104  of the liquid absorbing structure  101  to the bottom fin.  104 . The top fin  104  of the liquid absorbing structure  101  is configured to block the condensate in the return groove  106  from flowing to the air outlet channel  121 . 
     Further, as shown in  FIG. 12 , in order to make the refluxed cigarette liquid better be sucked by the atomization core  321  and re-atomized, the length of the bottom fin  104  of the liquid absorbing structure  101  extending to the central axis of the liquid absorbing structure  101  is shorter than the length of an adjacent fin  104  extending to the central axis. 
     In some embodiments, the air outlet channel  121  and the atomization assembly  30  are arranged next to each other up and down. The liquid absorbing structure  101  and the air outlet channel  121  are an integral structure. The liquid storage groove  105  is defined on the inner wall surface of the air outlet channel  121 . In the embodiments, as shown in  FIG. 12 , the liquid absorbing structure  101  and the air outlet channel  121  are separate structures. The liquid absorbing structure  101  includes a cylindrical body, which is arranged directly above the atomization assembly  30 . The housing  10  includes a main body and an air outlet tube  12  longitudinally arranged in an internal cavity of the main body. The air inlet channel  131 , the atomization cavity  311 , the inner cavity of the liquid absorbing structure  101 , and the air outlet tube  12  form a complete air flow channel. 
     The liquid absorbing structure  101  is arranged directly above the atomization core  321  and is arranged next to the atomization core  321 . The reason of this arrangement is: when the electronic cigarette is heated, due to an oil film in the atomization process, bubbles generated during the atomization process may easily bring out the incompletely atomized cigarette liquid. When the smoke rises, the liquid absorbing structure directly above the atomization core  321  sucks and stores the liquid droplets carried in the smoke in the liquid storage groove, which greatly reduces the possibility of leakage being inhaled. 
     The plurality of fins  104  are arranged on the inner wall surface of the cylindrical body. As shown in  FIG. 12 , the cylindrical body includes a first part  102  and a second part (not shown) that are detachably enclosed together. The inner wall surface of the first part  102  is arranged with a plurality of first fins, and the inner wall surface of the second part is arranged with a plurality of second fins. Specifically, the liquid absorbing structure is cylindrical and may be formed by a combination of two half-cylinders, and the fins are fan-ring shaped. 
     The atomization assembly  30  and the liquid absorbing structure  101  may also be arranged in a same sleeve  107 , and the liquid absorbing structure  101  is arranged next to the atomization assembly  30 . The sleeve  107  corresponding to the atomization assembly  30  defines at least one liquid inlet  110 , which is configured to allow the cigarette liquid in the liquid storage cavity  111  to enter the atomization core  321 . 
     In addition, in order to fix the atomization assembly  30  and the liquid absorbing structure  101  and make the installation more convenient, the outer side wall of the liquid absorbing structure  101  and the inner side wall of the sleeve  107  are closely arranged. In some embodiments, the liquid absorbing structure  101  and the sleeve  107  may be an integral structure. 
     In order to seal a connection between the sleeve  107  and the air outlet channel  121 , a position of the sleeve  107  corresponding to the top of the liquid absorbing structure  101  is arranged with a sealing member  108  that is sealed and connected to the air outlet channel  121 . The seal member may be a silicone sleeve or a rubber sleeve. It can be understood that in other embodiments, the sealing member  108  is not limited to a silicone sleeve or a rubber sleeve. 
     By implementing the second embodiment, the following beneficial effects may be achieved: 
     In the present disclosure, the liquid absorbing structure is arranged in the air outlet channel, and the plurality of liquid storage grooves are defined in the circumferential direction of the liquid absorbing structure. The liquid storage groove sucks the condensate in the air outlet channel by capillary force, such that the condensate generated in the inhaling process and/or the cigarette liquid that is not completely atomized stays in the liquid storage groove and is stored in the liquid storage groove with a liquid film formed in the liquid storage groove, thereby preventing the user from inhaling the leaking liquid during the inhaling process and improving the user&#39;s experience. 
     In addition, the liquid absorbing structure includes the plurality of fins, the fins are arranged in parallel and spaced along the longitudinal direction, and the liquid storage groove is defined between each two adjacent fins. In the smoke generated during the inhaling process, the liquid droplets brought out by passing through the fin will be trapped in the liquid storage groove. 
     In order to further prevent that too much cigarette liquid accumulated in the liquid storage groove in the liquid absorbing structure will be carried out with suction, the liquid absorbing structure of the present disclosure includes at least one return groove extending in the longitudinal direction, and at least one return groove longitudinally intersects with at least part of the liquid storage groove. When the liquid storage groove accumulates too much cigarette liquid, the cigarette liquid may flow back to the atomization core along the return groove to be atomized again. 
     In order to better suck and re-atomize the refluxed cigarette liquid, the length of the bottom fin of the liquid absorbing structure extending to the central axis of the liquid absorbing structure is shorter than the length of the adjacent fin extending to the central axis. 
     In addition, when the electronic cigarette is heated, due to an oil film in the atomization process, bubbles generated during the atomization process may easily bring out the incompletely atomized cigarette liquid. When the smoke rises, the liquid absorbing structure directly above the atomization core sucks and stores the liquid droplets carried in the smoke in the liquid storage groove, which greatly reduces the possibility of leakage being inhaled. 
       FIGS. 9, 10, 11, 13-17  show a third embodiment of the atomizer of the present disclosure. As shown in  FIGS. 9, 10 and 11 , the present disclosure provides an atomizer, a base  20 ; a housing  10  sleeved on the base  20 , and sealed and connected to the base  20  to define a liquid storage cavity  111 ; an electrode  90  arranged on a bottom of the base  20 ; a liquid injection assembly  109  arranged on and penetrating the base  20  for filling the liquid storage cavity  111 ; an atomizer body arranged on the base  20 ; an air flow channel running through the entire atomizer; and a first liquid absorbing structure and a second liquid absorbing structure. Among them, the base includes a liquid storage structure, and the liquid storage structure refers to the first embodiment, which will not be repeated here. The atomizer body includes an atomization assembly  30 , and the air flow channel includes an air inlet channel  131 , an atomization cavity  311 , and an air outlet channel  121 . The first liquid absorbing structure and the second liquid absorbing structure are connected to the air outlet channel  121  in a liquid conducting manner. The first liquid absorbing structure and the second liquid absorbing structure suck the condensate formed on the air outlet channel  121  by capillary force. The second liquid absorbing structure is arranged between the atomization assembly  30  and the first liquid absorbing structure, and the capillary force of the second liquid absorbing structure is greater than that of the first liquid absorbing structure. The second liquid absorbing structure defines a liquid storage groove  105  that sucks and stores condensate by capillary force. The condensate in the first liquid absorbing structure reaches the second liquid absorbing structure under the capillary force of the liquid storage groove  105  to be sucked and stored. 
     In the embodiments, the second liquid absorbing structure has an inner wall, the inner wall is recessed to define the liquid storage groove  105 , and the inner wall of the second liquid absorbing structure encloses a part of the air outlet channel  121 . The first liquid absorbing structure is a liquid absorbing groove  122  extending along the longitudinal direction of the inner wall of the air outlet channel  121 , and an end of the liquid absorbing groove  122  is butted with the liquid storage groove  105 . 
     In the embodiments, the air outlet channel  121  includes a detachable first airway wall and a second airway wall. The first liquid absorbing structure is formed on the first airway wall, and the second airway wall is the inner wall of the second liquid absorbing structure. As shown in  FIG. 11 , the housing  10  includes a main body and an air outlet tube  12  longitudinally arranged in the internal cavity of the main body. The second liquid absorbing structure is arranged below the air outlet tube  12 , and the first airway wall is the air outlet tube  12 . The second airway wall is the inner wall of the second liquid absorbing structure, and a complete air outlet channel  121  is formed by the air outlet tube  12  and the inner cavity of the second liquid absorbing structure. 
     In other embodiments, the second liquid absorbing structure may be formed on an integrally formed single element. For example, the air outlet tube  12  and the atomization assembly  30  are arranged next to each other up and down, and the second liquid absorbing structure and the air outlet tube  12  may be an integrated structure. The liquid storage groove  105  is defined on the inner wall surface of the air outlet tube  12 . While in the embodiments, the second liquid absorbing structure and the air outlet tube  12  are separate structures, and the second liquid absorbing structure includes a cylindrical body, which is arranged directly above the atomization assembly  30 . The air inlet channel  131 , the atomization cavity  311 , the inner cavity of the second liquid absorbing structure, and the air outlet tube  12  form a complete air flow channel. 
     As shown in  FIGS. 13 and 14 , the air outlet tube  12  includes a first end  1211  close to the atomization assembly  30  and a second end  1212  far away from the atomization assembly  30 . The liquid absorbing groove  122  extends longitudinally from the first end  1211  of the air outlet tube  12  toward the second end  1212  of the air outlet tube  12 . The number of liquid absorbing grooves  122  is more than one, and the liquid absorbing grooves  122  are evenly distributed along the peripheral wall of the air outlet channel  121 . The liquid absorbing grooves  122  are parallel to the central axis of the air outlet channel  121 . The first liquid absorbing structure is detachably connected or fixedly connected to the inner side wall of the air outlet tube  12 . In the embodiments, the first liquid absorbing structure is fixedly connected to the inner side wall of the air outlet tube  12 , that is, the first liquid absorbing structure and the air outlet tube  12  are an integral structure. At least one longitudinally extending liquid absorbing groove  122  is defined on the inner side wall of the air outlet tube  12 . The liquid absorbing groove  122  is not limited to being arranged in the longitudinal direction, and it can be arranged spirally, or inclinedly, or the inner side wall surface is arranged with a rough surface texture to increase the wettability of the surface to the condensate. In other embodiments, the leakage guide, as an implementation of the first liquid absorbing structure, is detachably connected to the inner side wall of the air outlet tube  12  by pasting, snapping, or the like. 
     As shown in  FIG. 11 , the atomization assembly  30  includes a cylindrical atomization core  321 , a liquid guiding cotton  323  surrounding the atomization core  321 , and a heating element  322  wound around the atomization core  321 . A conductive connecting part of the heating element  322  penetrates the base  20  and is connected to the electrode  90 . In some embodiments, the heating element  322  may be a heating wire. When in use, the liquid guiding cotton  323  sucks the cigarette liquid in the liquid storage cavity  111 , and the heating element  322  is energized to generate heat, such that the cigarette liquid in the atomization core  321  is atomized. The user inhales through an inhaling port of a top cover of the atomizer. Air enters the atomization core  321  from the air inlet channel under the inhaling action, is mixed with the atomized cigarette liquid in the atomization core  321 , and is discharged from the inhaling port of the top cover of the atomizer after passing through the air outlet channel  121 . 
     When the atomized gas reaches the air outlet through the air outlet channel  121 , airflow around the air outlet channel  121  meets the inner side wall of the air outlet tube  12  to condense to form smoke oil condensate. At this time, the liquid absorbing groove  122  sucks the condensate by capillary action. Since the capillary force of the liquid storage groove  105  is greater than the capillary force of the liquid absorbing groove  122 , the condensate in the liquid absorbing groove  122  reaches the second liquid absorbing structure under the capillary force of the liquid storage groove  105  to be sucked and stored. 
     In order to make the condensate sucked into the liquid absorbing groove  122  better flow back to the second liquid absorbing structure under the capillary force of the liquid storage groove  105 , and be sucked and stored by the second liquid absorbing structure, the depth of the liquid absorbing groove  122  gradually increases along a direction toward the liquid storage groove  105 , that is, gradually increasing from the second end  1212  to the first end  1211 . In some embodiments, the depth of the liquid absorbing groove  122  is greater than or equal to 0.1 mm. 
     It may also be arranged by setting the width of the liquid absorbing groove  122  to gradually increase along the direction toward the liquid storage groove  105 , that is, gradually increasing from the second end  1212  to the first end  1211 . Or, it may be arranged by setting the width of the liquid absorbing groove  122  to gradually increase along a direction from a bottom to an opening. In some embodiments, the width of the liquid absorbing groove  122  is 0.05-1 mm. 
     Based on the above embodiments of the first liquid absorbing structure, the bottom of the second liquid absorbing structure abuts against the liquid guiding cotton  323  of the atomization assembly  30 , and the bottom of the second liquid absorbing structure is arranged with a reflux structure to connect the liquid storage groove  105  and the liquid guiding cotton  323  in a liquid conducting manner, such that the condensate in the liquid storage groove  105  is returned to the liquid guiding cotton  323  to be sucked and reused. The reflux structure may be a return groove or a liquid outlet or a stepped structure. 
     As shown in  FIG. 15 , in some embodiments, the liquid storage groove  105  is a horizontal liquid storage groove. Specifically, a plurality of first fins  104  are arranged on the inner wall of the second liquid absorbing structure, and the first fins  104  are arranged in parallel and spaced apart along the longitudinal direction. Each two adjacently arranged first fins  104  define a transverse liquid storage groove therebetween. The width of the liquid storage groove  105  is small enough to generate capillary force on the condensate, such that in the smoke generated during the inhaling process, the liquid droplets brought out by passing through the fin  104  structure will be trapped in the liquid storage groove  105 , and a liquid film is formed in the liquid storage groove  105 . In this way, the liquid droplets may be stored in the liquid storage groove  105  to prevent the leakage of liquid from being inhaled. 
     In order to prevent excessive cigarette liquid accumulated in the liquid storage groove  105  in the second liquid absorbing structure, which will be carried out with inhaling, and to achieve reuse of the condensate, in the embodiments, the second absorbing structure includes: at least one return groove  106  extending in the longitudinal direction. At least one return groove  106  longitudinally intersects with at least part of the liquid storage groove  105 . When the liquid storage groove  105  accumulates too much cigarette liquid, the cigarette liquid may flow back to the atomization core  321  along the return groove  106  to be atomized again. Specifically, two return grooves  106  with the same diameter are defined on the inner wall of the liquid absorbing structure  101 . The return grooves  106  longitudinally extend from the next fin  104  of the top fin  104  of the liquid absorbing structure  101  to the bottom fin.  104 . The top fin  104  of the liquid absorbing structure  101  is configured to block the condensate in the return groove  106  from flowing to the air outlet channel  121 . 
     In order to make the refluxed cigarette liquid better be sucked by the atomization core  321  and re-atomized, the length of the bottom fin  104  of the liquid absorbing structure  101  extending to the central axis of the absorbing structure  101  is shorter than the length of an adjacent fin  104  extending to the central axis. 
     Since the condensate in the liquid absorbing groove  122  will reach the second liquid absorbing structure under the capillary force of the liquid storage groove  105  to be sucked and stored, the first fin  104  on the top of the second liquid absorbing structure defines a first liquid guiding port  117  facing the liquid absorbing groove  122 . The first liquid guiding port  117  is configured to divert the condensate in the liquid absorbing groove  122  to the liquid storage groove  105 , so as to be better sucked and stored by the second liquid absorbing structure. Specifically, in the embodiments, the second liquid absorbing structure is cylindrical, the top first fin  104  is circular, and the other fins are fan ring shaped. The first liquid guiding port  117  is a notch defined on the inner circular edge of the top first fin  104 . 
     The plurality of first fins  104  are arranged on the inner wall surface of the cylindrical body. As shown in  FIG. 15 , the cylindrical body includes a first part  102  and a second part (not shown) that are detachably enclosed together. The inner wall surfaces of the first part  102  and the second part are arranged with the plurality of first fins. Specifically, the liquid absorbing structure is cylindrical and may be formed by a combination of two half-cylinders. The top first fin  104  has a semicircular ring shape, and the other fins have a fan ring shape. 
     As shown in  FIGS. 16 and 17 , in some embodiments, the liquid storage groove  105  is a longitudinal liquid storage groove. Specifically, the second liquid absorbing structure is a hollow structure with a top wall  113  on the top, a plurality of liquid storage plates  114  are arranged from the top wall  113  longitudinally to the bottom, with the liquid storage plates  114  spaced apart. A liquid storage groove  105  is defined between each adjacent two liquid storage plates  114 . 
     In order to achieve better diversion and liquid suction, in the embodiments, the second liquid absorbing structure further includes at least one liquid guide groove  115  for diverting condensate connected to a part of the liquid storage groove  105 . The liquid guide groove  115  transversely intersects with the middle of at least some of the liquid storage plates  114 . In some embodiments, the liquid guide groove  115  and the liquid storage groove  114  are not limited to be parallel or perpendicular, as long as the cross flow can be achieved. 
     In order to achieve diversion at the bottom of the second liquid absorbing structure, the second liquid absorbing structure further includes at least one first stepped platform  116  for diverting condensate. The first stepped platform  116  transversely intersects with the bottom of some of the liquid storage plates  114 . In the embodiments, the first stepped platform  116  transversely intersects with the bottom of all the liquid storage plates  114 . 
     In order to allow the divided condensate to better flow back to the atomization core and be re-atomized, the at least one first stepped platform  116  is arranged with a second stepped platform  125 . In the embodiments, second stepped platforms  125  are arranged on two first stepped platforms  116 . The first stepped platforms  116 , the second stepped platforms  125  and the liquid storage groove  105  form a stepped structure. 
     Similarly, since the condensate in the liquid absorbing groove  122  will reach the second liquid absorbing structure under the capillary force of the liquid storage groove  105  to be sucked and stored, the top wall  113  of the second liquid absorbing structure defines a second liquid guiding port  118  facing the liquid absorbing groove  122 . Specifically, in the embodiments, the second liquid absorbing structure is cylindrical, the top wall  113  is circular, and the second liquid guiding port  118  is a notch defined on the inner circular edge of the top wall  113 . 
     A plurality of liquid storage plates  114  are arranged on the inner wall of the cylindrical body. The cylindrical body includes a first part and a second part that are detachably enclosed together. The inner wall surfaces of the first part and the second part are arranged with a plurality of liquid storage plates  114 . Specifically, the second liquid absorbing structure is cylindrical, and may be formed by combining two semi-cylindricals. 
     In some embodiments, the liquid storage groove  105  is a threaded liquid storage groove, and includes: a second fin arranged in a spiral on the inner wall to form the liquid storage groove  105  with a threaded structure. 
     In order to allow the condensate in the liquid storage groove  105  to flow back to the atomization core and be re-atomized, the second liquid absorbing structure includes at least one liquid outlet, which longitudinally cuts the second fin at the bottom part. 
     A plurality of second fins are arranged on the inner wall of the cylindrical body. The cylindrical body includes a first part and a second part that are detachably enclosed together. The inner wall surfaces of the first part and the second part are arranged with the plurality of second fins. Specifically, the second liquid absorbing structure is cylindrical, and may be formed by combining two semi-cylindricals. 
     In the above embodiments, the reason why the second liquid absorbing structure is arranged directly above the atomization core  321  and adjacent to the atomization core  321  is that: when the electronic cigarette is heated and atomized, the smoke passes through the air outlet channel and condensate is easily formed on the airway wall. The second liquid absorbing structure of the present disclosure arranged directly above the atomization assembly can suck and store the liquid droplets carried in the smoke in the liquid storage groove, which greatly reduces the possibility of inhaling leakage. 
     In some embodiments, the depth of the liquid storage groove  105  is greater than or equal to 0.1 mm, and the width of the liquid storage groove  105  is 0.05-1 mm. The material of the second liquid absorbing structure may also be one or more of PETG, PCTG and PC. 
     Moreover, in the embodiments, as shown in  FIG. 11 , the atomization assembly  30  and the second liquid absorbing structure are also arranged in a same sleeve  107 , and the second liquid absorbing structure is arranged next to the atomization assembly  30 . A position of the sleeve  107  corresponding to the atomization assembly  30  defines at least one liquid inlet  110 , which is configured to allow the cigarette liquid in the liquid storage cavity  111  to be sucked by the liquid guiding cotton  323 . 
     In order to fix the atomization assembly  30  and the second liquid absorbing structure and make the installation more convenient, the outer side wall of the second liquid absorbing structure and the inner side wall of the sleeve  107  are closely arranged. In some embodiments, the second liquid absorbing structure and the sleeve  107  may be an integral structure. 
     In order to seal the connection between the sleeve  107  and the air outlet channel  121 , a position of the sleeve  107  corresponding to the top of the second liquid absorbing structure is arranged with a sealing member  108  that is sealed and connected to the air outlet channel  121 . The seal member may be a silicone sleeve or a rubber sleeve. It can be understood that in other embodiments, the sealing member  108  is not limited to a silicone sleeve or a rubber sleeve. 
     The present disclosure also proposes an electronic atomization device, as shown in  FIGS. 9, 10 and 11 , including a base  20 , a housing  10  sleeved on the base  20 , and sealed and connected to the base  20  to define a liquid storage cavity  111 ; an electrode  90  arranged on a bottom  20  of the base  20 ; a liquid injection assembly  109  arranged on and penetrating the base  20  for filling the liquid storage cavity  111 ; an atomizer body arranged on the base  20 ; an air flow channel running through the entire atomizer; and a first liquid absorbing structure and a second liquid absorbing structure. Among them, the atomizer body includes an atomization assembly  30 , and the air flow channel includes an air inlet channel  131 , an atomization cavity  311 , and an air outlet channel  121 . The first liquid absorbing structure and the second liquid absorbing structure are connected to the air outlet channel  121  in a liquid conducting manner. The first liquid absorbing structure and the second liquid absorbing structure suck the condensate formed on the air outlet channel  121  by capillary force. The second liquid absorbing structure is arranged between the atomization assembly  30  and the first liquid absorbing structure, and the capillary force of the second liquid absorbing structure is greater than that of the first liquid absorbing structure. The second liquid absorbing structure defines a liquid storage groove  105  that sucks and stores condensate by capillary force. The condensate in the first liquid absorbing structure reaches the second liquid absorbing structure under the capillary force of the liquid storage groove  105  to be sucked and stored. In the embodiment, the electronic atomization device is a disposable atomization device with the base, the housing, and the atomizer body in an integrated structure, or a disposable atomization device with the base, the housing, and the atomizer body in a separated structure. 
     In the embodiments, the second liquid absorbing structure has an inner wall, the inner wall is recessed to define the liquid storage groove  105 , and the inner wall of the second liquid absorbing structure encloses a part of the air outlet channel  121 . The first liquid absorbing structure is a liquid absorbing groove  122  extending along the longitudinal direction of the inner wall of the air outlet channel  121 , and an end of the liquid absorbing groove  122  is butted with the liquid storage groove  105 . 
     In the embodiments, the air outlet channel  121  includes a detachable first airway wall and a second airway wall. The first liquid absorbing structure is formed on the first airway wall, and the second airway wall is the inner wall of the second liquid absorbing structure. As shown in  FIG. 11 , the housing  10  includes a main body and an air outlet tube  12  longitudinally arranged in the internal cavity of the main body. The second liquid absorbing structure is arranged below the air outlet tube  12 , and the first airway wall is the air outlet tube  12 . The second airway wall is the inner wall of the second liquid absorbing structure, and a complete air outlet channel  121  is formed by the air outlet tube  12  and the inner cavity of the second liquid absorbing structure. 
     In other embodiments, the second liquid absorbing structure may be formed on an integrally formed single element. For example, the air outlet tube  12  and the atomization assembly  30  are arranged next to each other up and down, and the second liquid absorbing structure and the air outlet tube  12  may be an integrated structure. The liquid storage groove  105  is defined on the inner wall surface of the air outlet tube  12 . While in the embodiments, the second liquid absorbing structure and the air outlet tube  12  are separate structures, and the second liquid absorbing structure includes a cylindrical body, which is arranged directly above the atomization assembly  30 . The air inlet channel  131 , the atomization cavity  311 , the inner cavity of the second liquid absorbing structure, and the air outlet tube  12  form a complete air flow channel. 
     As shown in  FIGS. 13 and 14 , the air outlet tube  12  includes a first end  1211  close to the atomization assembly  30  and a second end  1212  far away from the atomization assembly  30 . The liquid absorbing groove  122  extends longitudinally from the first end  1211  of the air outlet tube  12  toward the second end  1212  of the air outlet tube  12 . The number of liquid absorbing grooves  122  is more than one, and the liquid absorbing grooves  122  are evenly distributed along the peripheral wall of the air outlet channel  121 . The liquid absorbing grooves  122  are parallel to the central axis of the air outlet channel  121 . The first liquid absorbing structure is detachably connected or fixedly connected to the inner side wall of the air outlet tube  12 . In the embodiments, the first liquid absorbing structure is fixedly connected to the inner side wall of the air outlet tube  12 , that is, the first liquid absorbing structure and the air outlet tube  12  are an integral structure. At least one longitudinally extending liquid absorbing groove  122  is defined on the inner side wall of the air outlet tube  12 . The liquid absorbing groove  122  is not limited to being arranged in the longitudinal direction, and it can be arranged spirally, or inclinedly, or the inner side wall surface is arranged with a rough surface texture to increase the wettability of the surface to the condensate. In other embodiments, the leakage guide is detachably connected to the inner side wall of the air outlet tube  12  by pasting, snapping, or the like. 
     As shown in  FIG. 11 , the atomization assembly  30  includes a cylindrical atomization core  321 , a liquid guiding cotton  323  surrounding the atomization core  321 , and a heating element  322  wound around the atomization core  321 . A conductive connecting part of the heating element  322  penetrates the base  20  and is connected to the electrode  90 . In some embodiments, the heating element  322  may be a heating wire. When in use, the liquid guiding cotton  323  sucks the cigarette liquid in the liquid storage cavity  111 , and the heating element  322  is energized to generate heat, such that the cigarette liquid in the atomization core  321  is atomized. The user inhales through an inhaling port of a top cover of the atomizer. Air enters the atomization core  321  from the air inlet channel under the inhaling action, is mixed with the atomized cigarette liquid in the atomization core  321 , and is discharged from the inhaling port of the top cover of the atomizer after passing through the air outlet channel  121 . 
     When the atomized gas reaches the air outlet through the air outlet channel  121 , airflow around the air outlet channel  121  meets the inner side wall of the air outlet tube  12  to condense to form smoke oil condensate. At this time, the liquid absorbing groove  122  sucks the condensate by capillary action. Since the capillary force of the liquid storage groove  105  is greater than the capillary force of the liquid absorbing groove  122 , the condensate in the liquid absorbing groove  122  reaches the second liquid absorbing structure under the capillary force of the liquid storage groove  105  to be sucked and stored. 
     In order to make the condensate sucked into the liquid absorbing groove  122  better flow back to the second liquid absorbing structure under the capillary force of the liquid storage groove  105 , and be sucked and stored by the second liquid absorbing structure, the depth of the liquid absorbing groove  122  gradually increases along a direction toward the liquid storage groove  105 , that is, gradually increasing from the second end  1212  to the first end  1211 . In some embodiments, the depth of the liquid absorbing groove  122  is greater than or equal to 0.1 mm. 
     It may also be arranged by setting the width of the liquid absorbing groove  122  to gradually increase along the direction toward the liquid storage groove  105 , that is, gradually increasing from the second end  1212  to the first end  1211 . Or, it may be arranged by setting the width of the liquid absorbing groove  122  to gradually increase along a direction from a bottom to an opening. In some embodiments, the width of the liquid absorbing groove  122  is 0.05-1 mm. 
     Based on the above embodiments of the first liquid absorbing structure, the bottom of the second liquid absorbing structure abuts against the liquid guiding cotton  323  of the atomization assembly  30 , and the bottom of the second liquid absorbing structure is arranged with a reflux structure to connect the liquid storage groove  105  and the liquid guiding cotton  323  in a liquid conducting manner, such that the condensate in the liquid storage groove  105  is returned to the liquid guiding cotton  323  to be sucked and reused. The reflux structure may be a return groove or a liquid outlet or a stepped structure. 
     As shown in  FIG. 15 , in some embodiments, the liquid storage groove  105  is a horizontal liquid storage groove. Specifically, a plurality of first fins  104  are arranged on the inner wall of the second liquid absorbing structure, and the first fins  104  are arranged in parallel and spaced apart along the longitudinal direction. Each two adjacently arranged first fins  104  define a transverse liquid storage groove therebetween. The width of the liquid storage groove  105  is small enough to generate capillary force on the condensate, such that in the smoke generated during the inhaling process, the liquid droplets brought out by passing through the fin  104  structure will be trapped in the liquid storage groove  105 , and a liquid film is formed in the liquid storage groove  105 . In this way, the liquid droplets may be stored in the liquid storage groove  105  to prevent the leakage of liquid from being inhaled. 
     In order to prevent excessive cigarette liquid accumulated in the liquid storage groove  105  in the second liquid absorbing structure, which will be carried out with inhaling, and to achieve reuse of the condensate, in the embodiments, the second absorbing structure includes: at least one return groove  106  extending in the longitudinal direction. At least one return groove  106  longitudinally intersects with at least part of the liquid storage groove  105 . When the liquid storage groove  105  accumulates too much cigarette liquid, the cigarette liquid may flow back to the atomization core  321  along the return groove  106  to be atomized again. Specifically, two return grooves  106  with the same diameter are defined on the inner wall of the liquid absorbing structure  101 . The return grooves  106  longitudinally extend from the next fin  104  of the top fin  104  of the liquid absorbing structure  101  to the bottom fin.  104 . The top fin  104  of the liquid absorbing structure  101  is configured to block the condensate in the return groove  106  from flowing to the air outlet channel  121 . 
     In order to make the refluxed cigarette liquid better be sucked by the atomization core  321  and re-atomized, the length of the bottom fin  104  of the liquid absorbing structure  101  extending to the central axis of the absorbing structure  101  is shorter than the length of an adjacent fin  104  extending to the central axis. 
     Since the condensate in the liquid absorbing groove  122  will reach the second liquid absorbing structure under the capillary force of the liquid storage groove  105  to be sucked and stored, the first fin  104  on the top of the second liquid absorbing structure defines a first liquid guiding port  117  facing the liquid absorbing groove  122 . The first liquid guiding port  117  is configured to divert the condensate in the liquid absorbing groove  122  to the liquid storage groove  105 , so as to be better sucked and stored by the second liquid absorbing structure. Specifically, in the embodiments, the second liquid absorbing structure is cylindrical, the top first fin  104  is circular, and the other fins are fan ring shaped. The first liquid guiding port  117  is a notch defined on the inner circular edge of the top first fin  104 . 
     The plurality of first fins  104  are arranged on the inner wall surface of the cylindrical body. As shown in  FIG. 15 , the cylindrical body includes a first part  102  and a second part (not shown) that are detachably enclosed together. The inner wall surfaces of the first part  102  and the second part are arranged with the plurality of first fins. Specifically, the liquid absorbing structure is cylindrical and may be formed by a combination of two half-cylinders. The top first fin  104  has a semicircular ring shape, and the other fins have a fan ring shape. 
     As shown in  FIGS. 16 and 17 , in some embodiments, the liquid storage groove  105  is a longitudinal liquid storage groove. Specifically, the second liquid absorbing structure is a hollow structure with a top wall  113  on the top, a plurality of liquid storage plates  114  are arranged from the top wall  113  longitudinally to the bottom, with the liquid storage plates  114  spaced apart. A liquid storage groove  105  is defined between each adjacent two liquid storage plates  114 . 
     In order to achieve better diversion and liquid suction, in the embodiments, the second liquid absorbing structure further includes at least one liquid guide groove  115  for diverting condensate connected to a part of the liquid storage groove  105 . The liquid guide groove  115  transversely intersects with the middle of at least some of the liquid storage plates  114 . In some embodiments, the liquid guide groove  115  and the liquid storage plate  114  are not limited to be parallel or perpendicular, as long as the cross flow can be achieved. 
     In order to achieve diversion at the bottom of the second liquid absorbing structure, the second liquid absorbing structure further includes at least one first stepped platform  116  for diverting condensate. The first stepped platform  116  transversely intersects with the bottom of some of the liquid storage plates  114 . In the embodiments, the first stepped platform  116  transversely intersects with the bottom of all the liquid storage plates  114 . 
     In order to allow the divided condensate to better flow back to the atomization core and be re-atomized, the at least one first stepped platform  116  is arranged with a second stepped platform  125 . In the embodiments, second stepped platforms  125  are arranged on two first stepped platforms  116 . The first stepped platforms  116 , the second stepped platforms  125  and the liquid storage groove  105  form a stepped structure. 
     Similarly, since the condensate in the liquid absorbing groove  122  will reach the second liquid absorbing structure under the capillary force of the liquid storage groove  105  to be sucked and stored, the top wall  113  of the second liquid absorbing structure defines a second liquid guiding port  118  facing the liquid absorbing groove  122 . Specifically, in the embodiments, the second liquid absorbing structure is cylindrical, the top wall  113  is circular, and the second liquid guiding port  118  is a notch defined on the inner circular edge of the top wall  113 . 
     A plurality of liquid storage plates  114  are arranged on the inner wall of the cylindrical body. The cylindrical body includes a first part and a second part that are detachably enclosed together. The inner wall surfaces of the first part and the second part are arranged with a plurality of liquid storage plates  114 . Specifically, the second liquid absorbing structure is cylindrical, and may be formed by combining two semi-cylindricals. 
     In some embodiments, the liquid storage groove  105  is a threaded liquid storage groove, and includes: a second fin arranged in a spiral on the inner wall to form the liquid storage groove  105  with a threaded structure. 
     In order to allow the condensate in the liquid storage groove  105  to flow back to the atomization core and be re-atomized, the second liquid absorbing structure includes at least one liquid outlet, which longitudinally cuts the second fin at the bottom part. 
     A plurality of second fins are arranged on the inner wall of the cylindrical body. The cylindrical body includes a first part and a second part that are detachably enclosed together. The inner wall surfaces of the first part and the second part are arranged with the plurality of second fins. Specifically, the second liquid absorbing structure is cylindrical, and may be formed by combining two semi-cylindricals. 
     In the above embodiments, the reason why the second liquid absorbing structure is arranged directly above the atomization core  321  and adjacent to the atomization core  321  is that: when the electronic cigarette is heated and atomized, the smoke passes through the air outlet channel and condensate is easily formed on the airway wall. The second liquid absorbing structure of the present disclosure arranged directly above the atomization assembly can suck and store the liquid droplets carried in the smoke in the liquid storage groove, which greatly reduces the possibility of inhaling leakage. 
     In some embodiments, the depth of the liquid storage groove  105  is greater than or equal to 0.1 mm, and the width of the liquid storage groove  105  is 0.05-1 mm. The material of the second liquid absorbing structure may also be one or more of PETG, PCTG and PC. 
     Moreover, in the embodiments, as shown in  FIG. 11 , the atomization assembly  30  and the second liquid absorbing structure are also arranged in a same sleeve  107 , and the second liquid absorbing structure is arranged next to the atomization assembly  30 . A position of the sleeve  107  corresponding to the atomization assembly  30  defines at least one liquid inlet  110 , which is configured to allow the cigarette liquid in the liquid storage cavity  111  to be sucked by the liquid guiding cotton  323 . 
     In order to fix the atomization assembly  30  and the second liquid absorbing structure and make the installation more convenient, the outer side wall of the second liquid absorbing structure and the inner side wall of the sleeve  107  are closely arranged. In some embodiments, the second liquid absorbing structure and the sleeve  107  may be an integral structure. 
     In order to seal the connection between the sleeve  107  and the air outlet channel  121 , a position of the sleeve  107  corresponding to the top of the second liquid absorbing structure is arranged with a sealing member  108  that is sealed and connected to the air outlet channel  121 . The seal member may be a silicone sleeve or a rubber sleeve. It can be understood that in other embodiments, the sealing member  108  is not limited to a silicone sleeve or a rubber sleeve. 
     By implementing the third embodiment, the following beneficial effects are achieved: 
     In the present disclosure, the first liquid absorbing structure and the second liquid absorbing structure connected in a liquid conducting manner are arranged on the air outlet channel. The first liquid absorbing structure and the second liquid absorbing structure suck the condensate formed on the air outlet channel by capillary force. The second liquid absorbing structure is arranged between the atomization assembly and the first liquid absorbing structure, and the capillary force of the second liquid absorbing structure is greater than that of the first liquid absorbing structure. The second liquid absorbing structure defines a liquid storage groove that sucks and stores condensate by capillary force. The condensate in the first liquid absorbing structure reaches the second liquid absorbing structure under the capillary force of the liquid storage groove to be sucked and stored, which makes smoke oil not fully atomized in the inhaling process and condensate generated on the outlet channel to be absorbed and stored, preventing users from inhaling leakage during the inhaling process, and improving the user experience. 
     In addition, the bottom of the second liquid absorbing structure of the present disclosure abuts against the liquid guiding cotton  323 , and the bottom of the second liquid absorbing structure is arranged with a backflow structure to allow the liquid storage groove and the liquid guiding cotton  323  to communicate with each other. The condensate in the liquid reservoir is recovered to the liquid guiding cotton  323  to be re-atomized to improve the utilization rate of the cigarette oil. 
     When the electronic cigarette is heated and atomized, the smoke passes through the air outlet channel and condensate is easily formed on the airway wall. The second liquid absorbing structure of the present disclosure arranged directly above the atomization assembly can suck and store the liquid droplets carried in the smoke in the liquid storage groove, which greatly reduces the possibility of inhaling leakage. 
     It is to be understood that the above examples only present some embodiments of the present disclosure, and the description is more specific and detailed, but it should not be construed as a limitation on the scope of the present disclosure. It should be noted that for those skilled in the art, the above technical features can be freely combined and several deformations and improvements can be made without departing from the conception of the present disclosure, all of which fall within the scope of the present disclosure. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present disclosure shall fall within the scope of coverage of the claims of the present disclosure.