Patent Publication Number: US-2023157368-A1

Title: Vaporizer and electronic vaporization device

Description:
CROSS-REFERENCE TO PRIOR APPLICATION 
     Priority is claimed to Chinese Patent Application No. 202122862028.4, filed on Nov. 19, 2021, the entire disclosure of which is hereby incorporated by reference herein. 
     FIELD 
     The present disclosure relates to the field of vaporization, and more specifically, to a vaporizer and an electronic vaporization device. 
     BACKGROUND 
     An electronic vaporization device is generally used to heat and vaporize a to-be-vaporized liquid stored therein to form vapor for a user to inhale. The user generally inhales the vapor via an inhalation channel in the gas delivery channel of the electronic vaporization device. In the process of inhalation, a part of vapor is condensed on the side wall of the gas delivery channel to form a condensate, which, if not treated, will be easily inhaled by the user, affecting user experience. 
     SUMMARY 
     In an embodiment, the present invention provides a vaporizer, comprising: a liquid storage shell, a liquid storage space and an airflow channel being formed within the liquid storage shell; an end cap covering one end of the liquid storage space, a vent hole in communication with the airflow channel being formed on the end cap; and a liquid absorbing member arranged on the end cap, an air outlet hole in communication with the vent hole being formed on the liquid absorbing member, wherein the end cap comprises a supporting surface configured for contact with the liquid absorbing member, wherein at least one first liquid guide groove is provided on the supporting surface, and wherein each of the at least one first liquid guide groove comprises a first end in communication with the vent hole and a second end away from the vent hole. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Subject matter of the present disclosure will be described in even greater detail below based on the exemplary figures. All features described and/or illustrated herein can be used alone or combined in different combinations. The features and advantages of various embodiments will become apparent by reading the following detailed description with reference to the attached drawings, which illustrate the following: 
         FIG.  1    is a schematic three-dimensional structural diagram of an electronic vaporization device according to a first embodiment of the present disclosure; 
         FIG.  2    is a schematic structural exploded view of the electronic vaporization device shown in  FIG.  1   ; 
         FIG.  3    is a schematic structural cross-sectional view of the electronic vaporization device shown in  FIG.  1    taken along a longitudinal direction; 
         FIG.  4    is a schematic structural exploded view of a vaporizer in  FIG.  2   ; 
         FIG.  5    is a schematic structural cross-sectional view of a vaporizer in  FIG.  2    taken along a transverse direction; 
         FIG.  6    is a schematic structural exploded view of a heating component in  FIG.  4   ; 
         FIG.  7    is a schematic structural top view of an end cap in  FIG.  4   ; 
         FIG.  8    is a schematic structural cross-sectional view of a vaporizer taken along a longitudinal direction according to a second embodiment of the present disclosure; 
         FIG.  9    is a schematic partial structural view of the vaporizer shown in  FIG.  8   ; 
         FIG.  10    is a schematic partial structural cross-sectional view of a vaporizer according to a third embodiment of the present disclosure; 
         FIG.  11    is a schematic partial structural cross-sectional view of a vaporizer according to a fourth embodiment of the present disclosure; and 
         FIG.  12    is a schematic partial structural cross-sectional view of a vaporizer according to a fifth embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     In an embodiment, the present invention provides an improved vaporizer and an electronic vaporization device with the improved vaporized for the defects in the related art. 
     In an embodiment, the present invention provides a vaporizer, including: 
     a liquid storage shell, where a liquid storage space and an airflow channel are formed within the liquid storage shell; 
     an end cap covering one end of the liquid storage space, where a vent hole in communication with the airflow channel is formed on the end cap; and 
     a liquid absorbing member arranged on the end cap, where an air outlet hole in communication with the vent hole is formed on the liquid absorbing member; 
     where, the end cap includes a supporting surface configured for contact with the liquid absorbing member, at least one first liquid guide groove is provided on the supporting surface, and each of the at least one first liquid guide groove includes a first end in communication with the vent hole and a second end away from the vent hole. 
     In some embodiments, the second end of the first liquid guide groove extends at least to communicate with an outer edge of the liquid absorbing member. 
     In some embodiments, two or more first liquid guide grooves are provided on the supporting surface. 
     In some embodiments, the two or more first liquid guide grooves are distributed evenly along a circumferential direction of the supporting surface. 
     In some embodiments, the first liquid guide groove is a linear groove or a curved groove. 
     In some embodiments, the first liquid guide groove is a linear groove and extends along a radial direction of the supporting surface. 
     In some embodiments, a maximum length of the first liquid guide groove is greater than or equal to a radius of the liquid absorbing member. 
     In some embodiments, a number of the first liquid guide grooves is proportional to a cross-sectional area of the vent hole. 
     In some embodiments, at least one second liquid guide groove in communication with the at least one first liquid guide groove is further provided on the supporting surface. 
     In some embodiments, the second liquid guide groove is in an annular shape. 
     In some embodiments, at least two second liquid guide grooves are provided on the supporting surface. 
     In some embodiments, a plurality of the second liquid guide grooves are provided on the supporting surface, and a distance between every two adjacent second liquid guide grooves in the plurality of second liquid guide grooves gradually decreases in a direction away from the vent hole. 
     In some embodiments, the first liquid absorbing member is a liquid absorbing cotton. 
     In some embodiments, the end cap includes a cylindrical nesting portion extending into the airflow channel. In some embodiments, a length by which the nesting portion extends into the airflow channel is less than or equal to 6.5 mm. 
     In some embodiments, a material of the end cap includes silica gel. 
     In some embodiments, the vaporizer further includes a vent tube inserted into the liquid storage shell, where the airflow channel is defined by an inner wall surface of the vent tube, and the liquid storage space is defined between an outer wall surface of the vent tube and an inner wall surface of the liquid storage shell. 
     In some embodiments, the vaporizer further includes the liquid storage member arranged in the liquid storage space, where the vent tube is inserted into the liquid storage member. 
     In some embodiments, the vaporizer further includes a suction nozzle arranged on one end of the liquid storage shell, where an inhalation channel in communication with the air outlet hole is formed on the suction nozzle. 
     The present disclosure further provides an electronic vaporization device, including a vaporizer according to any one of the foregoing embodiments. 
     Implementation of the present disclosure has at least the following beneficial effects: Condensate at the vent hole may be guided by the first liquid guide groove, and then absorbed by the liquid absorbing member in contact with the first liquid guide groove, thereby increasing the liquid absorption speed of the liquid absorbing member. 
     In order to have a clearer understanding of the technical features, the objectives, and the effects of the present disclosure, specific implementations of the present disclosure are now illustrated in detail with reference to the accompanying drawings. Many specific details are set forth in the following description in order to facilitate a full understanding of the present disclosure. However, the present disclosure can be implemented in many other ways than those described herein, and a person skilled in the art may make similar improvements without contradicting the intent of the present disclosure, so that the present disclosure is not limited by the specific embodiments disclosed below. 
     In the description of the present disclosure, it should be understood that, orientation or position relationships indicated by terms such as “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “axial”, “radial”, and “circumferential” are orientation or position relationships shown based on the accompanying drawings, or orientation or position relationships that usually placed for the use of the present disclosure product, and are merely used for describing the present disclosure and simplifying the description, rather than indicating or implying that the mentioned apparatus or element should have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be construed as a limitation to the present disclosure. 
     In addition, the terms “first” and “second” are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature restricted by “first” or “second” may explicitly indicate or implicitly include at least one of such features. In the description of the present disclosure, unless otherwise explicitly defined, “a plurality of” means at least two, for example, two, three, and the like. 
     In the present disclosure, unless otherwise explicitly specified and defined, terms such as “mounted”, “connected”, “connection”, and “fixed” should be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; or the connection may be a mechanical connection or an electrical connection; or the connection may be a direct connection, an indirect connection through an intermediate medium, or internal communication between two elements or mutual action relationship between two elements, unless otherwise explicitly specified. A person of ordinary skill in the art may understand the specific meanings of the foregoing terms in this present disclosure according to specific situations. 
     In the present disclosure, unless otherwise explicitly specified and defined, a first feature is “on” or “below” a second feature may indicate that the first feature and the second feature are in direct contact, or the first feature and the second feature are in indirect contact through an intermediate medium. In addition, the first feature is “above”, “over”, and “on” the second feature may indicate that the first feature is directly above or obliquely above the second feature, or may merely indicate that the horizontal position of the first feature is higher than that of the second feature. The first feature is “below”, “under”, and “beneath” the second feature may indicate that the first feature is directly below or obliquely below the second feature, or may merely indicate that the horizontal position of the first feature is lower than that of the second feature. 
       FIG.  1    to  FIG.  3    show an electronic vaporization device  1  in a first embodiment of the present disclosure. In some embodiments, the electronic vaporization device  1  may be substantially in a shape of a cylinder and may include a power supply device  200  and a vaporizer  100  arranged above the power supply device  200  along a longitudinal direction. The vaporizer  100  is configured to accommodate a to-be-vaporized liquid and heat the to-be-vaporized liquid to generate an aerosol, and the power supply device  200  is configured to supply power to the vaporizer  100 . It may be understood that, in some other embodiments, the electronic vaporization device  1  is not limited to be the shape of a cylinder, and may be in other shapes such as an oval cylinder, a square cylinder, a flat cylinder, and the like. 
     The power supply device  200  may include a housing  80  and a battery  90  accommodated in the housing  80 . The battery  90  is electrically connected to a heating component  30  of the vaporizer  100 , and is configured to supply power to the heating component  30 . The housing  80  may be substantially cylindrical in shape. The battery  90  may be accommodated in a lower part of the housing  80 . An accommodating space  81  for accommodating the vaporizer  100  is formed on an upper part of the housing  80 . 
     As shown in  FIG.  3    and  FIG.  4   , in some embodiments, the vaporizer  100  may include a liquid storage container  10 , a base  20 , a heating component  30 , a vent tube  40 , an end cap  50 , a liquid absorbing member  60 , and a suction nozzle assembly  70 . 
     The liquid storage container  10  is configured to store the to-be-vaporized liquid, and may include a liquid storage shell  11 . In this embodiment, the liquid storage shell  11  is in a shape of a cylinder with openings on two ends. The vent tube  40  is inserted into the liquid storage shell  11  along the longitudinal direction and may be arranged coaxially with the liquid storage shell  11 . A liquid storage space  110  in an annular shape is formed between an outer wall surface of the vent tube  40  and an inner wall surface of the liquid storage shell  11 . An airflow channel  41  is defined by an inner wall surface of the vent tube  40 . In some embodiments, the vent tube  40  may be a fiberglass tube to reduce cost. In some other embodiments, the vent tube  40  may also be made of other materials such as plastic, metal, or the like. 
     In some embodiments, the liquid storage container  10  may further include a liquid storage member  12  arranged in the liquid storage space  110  for absorbing and storing a certain amount of the to-be-vaporized liquid. The liquid storage member  12  is in the shape of an annular column, and a through hole  120  for insertion of the vent tube  40  is formed on the liquid storage member  12  along the longitudinal direction. The liquid storage member  12  may generally be a liquid storage cotton, so as to absorb and store a large amount of the to-be-vaporized liquid. In some embodiments, a fastening opening  121  is formed on a side wall of the liquid storage member  12 , to render the liquid storage member  12  in the shape of a C-shaped cylinder, so that the liquid storage member  12  can be easily clamped on a periphery of the vent tube  40 . 
     The heating component  30  is arranged in the liquid storage shell  11  and is in contact with the liquid storage member  12 , and is configured to heat and vaporize the to-be-vaporized liquid stored in the liquid storage member  12  after being electrified. A vaporization cavity  330  may be formed on the heating component  30  along the longitudinal direction, and the vaporization cavity  330  may be communicated with a lower end of the airflow channel  41 . The heating component  30  may include a composite liquid guide cotton  31  that is in contact with the liquid storage member  12  for absorbing the to-be-vaporized liquid from the liquid storage member  12 , a heating body  33  arranged in the composite liquid guide cotton  31  for heating and vaporizing the to-be-vaporized liquid after being electrified, and a heating base  32  for supporting the composite liquid guide cotton  31 . 
     As shown in  FIG.  5    to  FIG.  6   , in some embodiments, the composite liquid guide cotton  31  may include at least one heat-resistant layer  311 , at least one first isolation layer  312 , at least one fast liquid guide layer  313 , and at least one second isolation layer  314  laminated in sequence. 
     The at least one heat-resistant layer  311  may be in contact with the liquid storage member  12  and the heating body  33  respectively, and may be made of a material with fast liquid absorption and high temperature resistance, to prevent the production of a burning smell during heating. In this embodiment, one heat-resistant layer  311  made of linen cotton is provided, which has the advantages of fast liquid absorption, fast absorption and drying, high temperature resistance, being not likely to cause a burning smell, and antibacterial properties. The linen cotton may have a weight per square meter of 45 grams±10% before being soaked with a liquid. The linen cotton soaked with the to-be-vaporized liquid has a temperature resistance value of 200° C. or above, preferably, 300° C. or above. The fast liquid guide layer  313  has a high liquid conduction rate, which is higher than those of the heat-resistant layer  311 , the first isolation layer  312 , and the second isolation layer  314 . In this embodiment, two fast liquid guide layers  313  made of wood pulp cotton may be provided. The wood pulp cotton may have a weight per square meter of 50 grams±10% before being soaked with a liquid. The arrangement of the two layers of wood pulp cotton stacked together can further increase the liquid conduction speed. In some other embodiments, one or more than two fast liquid guide layers  313  may be provided. 
     The first isolation layer  312  and the second isolation layer  314  may be made of a material capable of isolating unpleasant smell, providing fast liquid conduction and having high liquid storage capacity. The materials of the first isolation layer  312  and the second isolation layer  314  may be the same or different. The first isolation layer  312  and the second isolation layer  314  are respectively arranged on two opposing sides of the fast liquid guide layer  313 , and can isolate an unpleasant smell that may be generated by the material of the fast liquid guide layer  313 , allowing for the selection of the material of the fast liquid guide layer  313  from a broader range of materials. In this way, the material of the fast liquid guide layer  313  may be selected by considering only the liquid conduction rate, without worrying about whether the selected material generates an unpleasant smell. In addition, the liquid storage capacities of the first isolation layer  312  and the second isolation layer  314  are higher than that of the fast liquid guide layer  313 , that is, the amounts of liquid absorbed per unit volume of the first isolation layer  312  and the second isolation layer  314  at saturation are greater than that of the fast liquid guide layer  313 . 
     In some embodiments, the liquid storage capacities of the first isolation layer  312  and the second isolation layer  314  are higher than that of the heat-resistant layer  311 , and the liquid storage capacity of the heat-resistant layer  311  is higher than that of the fast liquid guide layer  313 . The first isolation layer  312  and the second isolation layer  314  can store a large amount of the to-be-vaporized liquid, thereby further avoiding the occurrence of dry burning. In this embodiment, one first isolation layer  312  and one second isolation layer  314  which are made of a non-woven fabric are provided. The non-woven fabric may have a weight per square meter of 75 grams±10% and a thickness of 0.3-0.4 mm before being soaked with a liquid. Using the non-woven fabric which is 75 grams per square meter can increase the liquid storage capacity of the composite liquid guide cotton  31 . In some other embodiments, the first isolation layer  312  and the second isolation layer  314  may also be made of blended cotton (a blend of linen cotton and a non-woven fabric), a black-spotted (cottonseed) non-woven fabric, tea fibers, or other materials. 
     The composite liquid guide cotton  31  may include a first liquid guide portion  315 , a second liquid guide portion  316 , a first extension portion  317 , and a second extension portion  318 . 
     The first liquid guide portion  315  is in an annular shape with an opening on a cross-section thereof, and includes a first end  3151  and a second end  3152  opposite to the first end  3151  along a circumferential direction. The first liquid guide portion  315  includes a heat-resistant layer  311 , a first isolation layer  312 , a fast liquid guide layer  313 , and a second isolation layer  314  from inside to outside. A first cavity  3150  is defined by an inner wall surface of the first liquid guide portion  315 , and the first cavity  3150  forms the vaporization cavity  330 . 
     The heating body  33  may be arranged on the inner wall surface of the first liquid guide portion  315 , that is, the heating body  33  is arranged on the heat-resistant layer  311  of the first liquid guide portion  315 . In this embodiment, the heating body  33  may be a cylindrical heating sheet. In some other embodiments, the heating body  33  may be a helical heating wire, a heating film, or other structures. 
     The second liquid guide portion  316  is in an annular shape and is arranged on a periphery of the first liquid guide portion  315 , and may be arranged coaxially with the first liquid guide portion  315 . The second liquid guide portion  316  includes a heat-resistant layer  311 , a first isolation layer  312 , a fast liquid guide layer  313 , and a second isolation layer  314  from outside to inside. An inner diameter of the second liquid guide portion  316  is larger than an outer diameter of the first liquid guide portion  315 . A second cavity  3160  in an annular shape is formed between an inner wall surface of the second liquid guide portion  316  and an outer wall surface of the first liquid guide portion  315 . The second cavity  3160  is configured for insertion of the heating base  32  therein. That is, an inner wall surface of the heating base  32  is in contact with the second isolation layer  314  which is the outermost layer of the first liquid guide portion  315 , and an outer wall surface of the heating base  32  is in contact with the second isolation layer  314  which is the innermost layer of the second liquid guide portion  316 . 
     The heating base  32  may be in a shape of a circular tube, and may include a base body  321  and an extension portion  322  extending upward from an upper end of the base body  321 . Inner diameters of the base body  321  and the extension portion  322  are equal, and an outer diameter of the base body  321  may be larger than that of the extension portion  322 , so that a step surface  323  is formed at the junction of the base body  321  and the extension portion  322 . A lower end of the vent tube  40  may be sleeved outside the extension portion  322 . An end surface of a lower end of the vent tube  40  may abut against the step surface  323 . An outer diameter of the vent tube  40  may be equal to that of the base body  321 . 
     The first liquid guide portion  315  may be accommodated in the base body  321 . At least one liquid inlet hole  3210  is further formed on a side wall of the base body  321 , so that the to-be-vaporized liquid in the liquid storage member  12  can enter the base body  321  through the at least one liquid inlet hole  3210  and be absorbed by the first liquid guide portion  315 . In this embodiment, two liquid inlet holes  3210  are provided, and the two liquid inlet holes  3210  may be arranged symmetrically along a circumferential direction of the base body  321 . 
     At least one slot  3211  may further be arranged on the side wall of the heating base  32 . The at least one slot  3211  may extend downward along an axial direction from an end surface of an upper end of the extension portion  322 . The first end  3151  and the second end  3152  of the first liquid guide portion  315  may run out through the at least one slot  3211 . In addition, the at least one slot  3211  also has a function of communicating the liquid storage member  12  with the first liquid guide portion  315 . In this embodiment, two slots  3211  are provided, the two slots  3211  may be arranged symmetrically along a circumferential direction of the heating base  32 , and the slots  3211  may be arranged at an angle of 90 degrees relative to the liquid inlet holes  3210  along the circumferential direction of the heating base  32 . 
     The first end  3151  of the first liquid guide portion  315  runs out through the slot  3211  and is connected to a circumferential end of the second liquid guide portion  316 . The second end  3152  of the first liquid guide portion  315  runs out through the slot  3211  and then extends outward along a radial direction to form the first extension portion  317 . An other circumferential end of the second liquid guide portion  316  is connected to the second extension portion  318 . An extension direction of the second extension portion  318  may be the same as that of the first extension portion  317 . The second extension  318  and the first extension  317  may converge and be engaged in the fastening opening  121  of the liquid storage member  12 . 
     During assembly of the heating component  30 , first, a sheet-like composite liquid guide cotton material may be wrapped around the heating component  33  to form the first liquid guide portion  315 . Then, the first liquid guide portion  315  wrapping the heating component  33  is inserted downward into the heating base  32  through an opening at an upper end of the heating base  32 , so that the second end  3152  of the first liquid guide portion  315  runs out through the slot  3211  in the radial direction to form the first extension portion  317 , and the first end  3151  of the first liquid guide portion  315  runs out through the slot  3211  and is wound around the heating base  32  to form the second liquid guide portion  316 . Then the other end of the second liquid guide portion  316  is bonded to the first extension portion  317  to form the second extension portion  318 . Finally, the liquid storage member  12  is wrapped around the heating component  30 , and the first extension  317  and the second extension  318  which are bonded together are engaged in the fastening opening  121  of the liquid storage member  12 . 
     In this embodiment, the second liquid guide portion  316 , the first extension portion  317 , and the second extension portion  318  of the composite liquid guide cotton  31  are all in contact with the liquid storage member  12 , thereby greatly increasing the contact area between the composite liquid guide cotton  31  and the liquid storage member  12  and greatly increasing the liquid absorption speed of the composite liquid guide cotton  31 . 
     As shown in  FIG.  3    to  FIG.  4   , the base  20  and the end cap  50  cover two ends of the liquid storage space  110  respectively, and may be respectively made of an elastic material such as silica gel, so as to sealedly block the two ends of the liquid storage space  110  to reduce liquid leakage. Specifically, the base  20  may be embedded in an opening at a lower end of the liquid storage shell  11 , that is, in an opening at the end of the liquid storage shell  11  close to the battery  90 . The base  20  may be configured to support the liquid storage member  12  and the heating component  30 . An air guide hole  21  in communication with the vaporization cavity  330  may be formed on the base  20  along the longitudinal direction. The end cap  50  may be embedded in an opening at an upper end of the liquid storage shell  11 , that is, in an opening at the end of the liquid storage shell  11  close to the suction nozzle assembly  70 . A vent hole  51  in communication with an upper end of the airflow channel  41  may be formed on the end cap  50  along the longitudinal direction. 
     In some embodiments, the end cap  50  may include an end cap body  52  and a nesting portion  53  extending downward from a lower end surface of the end cap body  52 . The end cap body  52  and the nesting portion  53  may be coaxially arranged. The end cap body  52  is embedded in the opening at the upper end of the liquid storage shell  11 , and an outer wall surface of the end cap body  52  may be in a sealed fit with the inner wall surface of the liquid storage shell  11  to prevent liquid leakage. An upper end surface of the end cap body  52  forms a supporting surface  520  for supporting the liquid absorbing member  60 . An annular cavity  122  may be formed between the lower end surface of the end cap body  52  and an upper end surface of the liquid storage member  12 , to prevent the end cap body  52  from squeezing the liquid storage member  12  to cause liquid leakage. In some other embodiments, the lower end surface of the end cap body  52  may also be in contact with the upper end surface of the liquid storage member  12 . 
     The nesting portion  53  is inserted downward into the airflow channel  41  for assembly. In this embodiment, an outer wall surface of the nesting portion  53  is in a sealed fit with the inner wall surface of the vent tube  40 , and the lower end surface of the end cap body  52  is in a sealed fit with an upper end surface of the vent tube  40 . An outer diameter of a lower end of the nesting portion  53  may gradually increase from bottom to top to form a guide chamfer to facilitate the insertion of the nesting portion  53  into the airflow channel  41 . By reducing a length by which the nesting portion  53  extends into the airflow channel  41 , the length of a wall of the vent hole  51  that adsorbs vapor can be reduced, thereby reducing the loss of aroma and sweetness of the vapor and reducing the accumulation of condensate in the vent hole  51 . In some embodiments, the length by which the nesting portion  53  extends into the airflow channel  41  is less than or equal to 6.5 mm. 
     The liquid absorbing member  60  is supported on the supporting surface  520  of the end cap  50  and in contact with the supporting surface  520 , and is configured to absorb the condensate accumulated in the vent hole  51 , thereby preventing the condensate accumulated in the vent hole  51  from being inhaled into a user&#39;s mouth. An air outlet hole  61  in communication with the vent hole  51  may be formed on the liquid absorbing member  60  along the longitudinal direction. The liquid absorbing member  60  is generally a liquid absorbing cotton, so as to absorb and store a large amount of condensate. 
     As shown in  FIG.  7   , at least one first liquid guide groove  521  may be provided on the supporting surface  520 . Each of the at least one first liquid guide groove  521  includes a first end  5211  and a second end  5212  opposite to the first end  5211 . The first end  5211  of the first liquid guide groove  521  is communicated with the vent hole  51 , and the second end  5212  of the first liquid guide groove  521  extends in a direction away from the vent hole  51 . The condensate at the vent hole  51  may be guided by the first liquid guide groove  521 , and then absorbed by the liquid absorbing member  60  in contact with the first liquid guide groove  521 , thereby increasing the liquid absorption speed of the liquid absorbing member  60 . Preferably, the number of the first liquid guide grooves  521  is two or more, and the second end  5212  of the first liquid guide groove  521  extends at least to communicate with an outer edge of a bottom surface of the liquid absorbing member  60 , thereby guiding the condensate at the vent hole  51  to the entire bottom surface of the liquid absorbing member  60 . 
     The shape of the first liquid guide groove  521  is not limited herein, and may be, for example, a linear groove or a curved groove. 
     In this embodiment, the first liquid guide groove  521  is a linear groove and may extend along a radial direction of the supporting surface  520 , and a maximum length of the first liquid guide groove  521  is greater than or equal to a radius of the liquid absorbing member  60 . 
     Preferably, the number of the first liquid guide grooves  521  is proportional to a cross-sectional area of the vent hole  51 , that is, a larger cross-sectional area of the vent hole  51  requires a larger number of first liquid guide grooves  521 , and provides a better guiding effect. The two or more first liquid guide grooves  521  may be distributed evenly along a circumferential direction of the supporting surface  520 , so that the condensate at the vent hole  51  can be evenly and quickly guided to the entire bottom surface of the liquid absorbing member  60 . 
     Further, at least one second liquid guide groove  522  in communication with the at least the one first liquid guide groove  521  may further be provided on the supporting surface  520 . The condensate at the vent hole  51  is guided to the at least one first liquid guide groove  521  and the at least one second liquid guide groove  522  in communication with the at least one first liquid guide groove  521 , and then absorbed by the liquid absorbing member  60  in contact with the at least one first liquid guide groove  521  and the at least one second liquid guide groove  522 . In this embodiment, the at least one second liquid guide groove  522  is in an annular shape and each of the at least one second liquid guide groove  522  in the annular shape is communicated with the two or more first liquid guide grooves  521 . Preferably, the number of the second liquid guide grooves  522  may be two or more. When a plurality of the second liquid guide grooves  522  are provided, a distance between every two adjacent second liquid guide grooves  522  in the plurality of second liquid guide grooves  522  gradually decreases in the direction away from the vent hole  51 , so that the condensate at the vent hole  51  can be more quickly diffused outward to the periphery and absorbed by the liquid absorbing member  60 . In this embodiment, a maximum radius of the at least two second liquid guide grooves  522  is equal to the maximum length of the first liquid guide groove  521 . It may be understood that, in some other embodiments, the supporting surface  520  may be provided with only the at least one first liquid guide groove  521 , and not the at least one second liquid guide groove  522 . 
     As shown in  FIG.  3   , the suction nozzle assembly  70  includes a suction nozzle  71 . The suction nozzle is arranged on an upper end of the liquid storage shell  11 . An inhalation channel  710  in communication with the air outlet hole  61  is formed on the suction nozzle  71  along the longitudinal direction. An upper portion of the liquid storage shell  11 , the end cap  50 , and the liquid absorbing member  60  may all be accommodated in a lower portion of the suction nozzle  71 . 
     The air guide hole  21 , the vaporization cavity  330 , the airflow channel  41 , the vent hole  51 , the air outlet hole  61 , and the inhalation channel  710  are communicated in sequence from bottom to top to form a vapor conveying channel  130 . The air guide hole  21  forms an air intake channel of the vapor conveying channel  130  to introduce outside air. The airflow channel  41 , the vent hole  51 , the air outlet hole  61 , and the air intake channel  710  together form an air outlet channel of the vapor conveying channel  130  to output vapor. When the outside air enters from the air intake channel and flows upward to the vaporization cavity  330 , the outside air is mixed with the aerosol generated from the to-be-vaporized liquid heated by the heating component  30 , and vapor generated after the mixing is output through the outlet channel for the user to inhale. 
     In some embodiments, the suction nozzle assembly  70  may further include a sealing plug  72 . The sealing plug  72  may be made of an elastic material such as silica gel. The sealing plug  72  may be removably plugged at an upper end of the air intake channel  710  and may be configured to sealedly block the air intake channel  710  when the vaporizer  100  is not in use, to prevent dust or the like from entering the air intake channel  710 . 
       FIG.  8    to  FIG.  9    show the vaporizer  100  in a second embodiment of the present disclosure. The second embodiment differs from the first embodiment mainly in that, in this embodiment, the liquid storage member  12  is communicated with the outside through a pressure balance channel  54 . When an ambient temperature rises, heated and expanded air inside the vaporizer  100  may be discharged to the outside of the vaporizer  100  through the pressure balance channel  54 , to avoid unduly large on the to-be-vaporized liquid, thereby solving the problem of liquid leakage at a high temperature. 
     As described above, in this embodiment, the air guide hole  21 , the vaporization cavity  330 , the airflow channel  41 , the vent hole  51 , the air outlet hole  61 , and the inhalation channel  710  are communicated in sequence from bottom to top to form the vapor conveying channel  130 . The pressure balance channel  54  may be communicated with the vapor conveying channel  130 , and is therefore communicated with the outside. Preferably, the pressure balance channel  54  may be formed by a clearance fit between the end cap  50  and the vent tube  40 , so that the liquid storage member  12  is communicated with the airflow channel  41  and the vent hole  51  through the pressure balance channel  54 , and is therefore communicated with the outside. The formation of the pressure balance channel  54  by reserving a clearance fit between the end cap  50  and the vent tube  40  is simple in design and can avoid operations such as forming a hole or groove in parts. In some embodiments, the fit clearance between the end cap  50  and the vent tube  40  may be 0-0.1 mm. 
     Specifically, in this embodiment, the end cap  50  may include an end cap body  52  and a nesting portion  53  extending downward from the end cap body  52  into the airflow channel  41 . The vent hole  51  runs through the end cap body  52  and the nesting portion  53  along the longitudinal direction, and may be arranged coaxially with the end cap body  52  and the nesting portion  53 . An annular cavity  122  may be formed between a lower end surface of the end cap body  52  and an upper end surface of the liquid storage member  12 . A groove  523  is formed on a bottom surface of the end cap body  52 . The groove  523  may be provided coaxially with the end cap body  52 . The nesting portion  53  may extend downward from a bottom surface of the groove  523 . 
     The upper end of the vent tube  40  may be accommodated in the groove  523 . A first fit clearance is formed between an inner wall surface of the groove  523  and the outer wall surface of the vent tube  40 . The first fit clearance forms a first channel  541  in communication with the cavity  122 . A second fit clearance is formed between the bottom surface of the groove  523  and an upper end surface of the vent tube  40 . The second fit clearance forms a second channel  542  in communication with the first channel  541 . A third fit clearance is formed between the outer wall surface of the nesting portion  53  and the inner wall surface of the vent tube  40 . The third fit clearance forms a third channel  543  in communication with the second channel  542 . The first channel  541 , the second channel  542 , and the third channel  543  are communicated in sequence to form the pressure balance channel  54  that communicates the cavity  122  with the airflow channel  41 . When the ambient temperature rises, heated and expanded air in the cavity  122  and heated and expanded air in the liquid storage member  12  are discharged into the airflow channel  41  through the first channel  541 , the second channel  542 , and the third channel  543  in sequence, and then discharged to the outside of the vaporizer  100  through the vapor conveying channel  130 . 
       FIG.  10    shows a vaporizer  100  in a third embodiment of the present disclosure. The third embodiment differs from the second embodiment mainly in that, in this embodiment, the end cap  50  includes only an end cap body  52 . Specifically, the vent hole  51  runs through the end cap body  52  along the longitudinal direction, and the upper end of the vent tube  40  extends into and is communicated with the vent hole  51 . A fit clearance is formed between the outer wall surface of the vent tube  40  and the wall of the vent hole  51 . The fit clearance forms the pressure balance channel  54  that communicates the cavity  122  with the vent hole  51 . 
       FIG.  11    shows a vaporizer  100  in a fourth embodiment of the present disclosure. The fourth embodiment differs from the second embodiment mainly in that, in this embodiment, the end cap  50  includes only an end cap body  52 . Specifically, the vent hole  51  extends downward from an upper end surface of the end cap body  52 . A groove  523  in communication with the vent hole  51  is formed on a bottom surface of the end cap body  52 . An outer diameter of the groove  523  is larger than that of the vent hole  51 . The upper end of the vent tube  40  may be accommodated in the groove  523 . A first fit clearance is formed between an inner wall surface  5231  of the groove  523  and the outer wall surface of the vent tube  40 . The first fit clearance forms a first channel  541  in communication with the cavity  122 . A second fit clearance is formed between a bottom surface  5232  of the groove  523  and the upper end surface of the vent tube  40 . The second fit clearance forms a second channel  542  in communication with the first channel  541 . The first channel  541  and the second channel  542  are communicated in sequence to form the pressure balance channel  54  that communicates the cavity  122  with the airflow channel  41  and the vent hole  51 . 
       FIG.  12    shows a vaporizer  100  in a fifth embodiment of the present disclosure. The fifth embodiment differs from the second embodiment mainly in that, in this embodiment, the lower end surface of the end cap body  52  is in contact with the upper end surface of the liquid storage member  12 , that is, no cavity  122  is formed between the lower end surface of the end cap body  52  and the upper end surface of the liquid storage member  12 . Correspondingly, in this embodiment, the first channel  541  of the pressure balance channel  54  is communicated with the liquid storage member  12 . When the ambient temperature rises, heated and expanded air in the liquid storage member  12  is discharged into the airflow channel  41  through the first channel  541 , the second channel  542 , and the third channel  543  in sequence, and then discharged to the outside of the vaporizer  100  through the vapor conveying channel  130 . 
     It may be understood that, the technical features may be used in any combination without limitation. 
     While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. It will be understood that changes and modifications may be made by those of ordinary skill within the scope of the following claims. In particular, the present invention covers further embodiments with any combination of features from different embodiments described above and below. Additionally, statements made herein characterizing the invention refer to an embodiment of the invention and not necessarily all embodiments. 
     The terms used in the claims should be construed to have the broadest reasonable interpretation consistent with the foregoing description. For example, the use of the article “a” or “the” in introducing an element should not be interpreted as being exclusive of a plurality of elements. Likewise, the recitation of “or” should be interpreted as being inclusive, such that the recitation of “A or B” is not exclusive of “A and B,” unless it is clear from the context or the foregoing description that only one of A and B is intended. Further, the recitation of “at least one of A, B and C” should be interpreted as one or more of a group of elements consisting of A, B and C, and should not be interpreted as requiring at least one of each of the listed elements A, B and C, regardless of whether A, B and C are related as categories or otherwise. Moreover, the recitation of “A, B and/or C” or “at least one of A, B or C” should be interpreted as including any singular entity from the listed elements, e.g., A, any subset from the listed elements, e.g., A and B, or the entire list of elements A, B and C.