Patent Publication Number: US-2023157361-A1

Title: Composite liquid guide cotton, heating assembly, vaporizer, and electronic vaporization device

Description:
CROSS-REFERENCE TO PRIOR APPLICATION 
     Priority is claimed to Chinese Patent Application No. 202111408312.2, filed on Nov. 19, 2021, the entire disclosure of which is hereby incorporated by reference herein. 
     FIELD 
     The invention relates to the field of vaporization, and more particularly, to a composite liquid guide cotton, a heating assembly, a vaporizer and an electronic vaporization device. 
     BACKGROUND 
     An electronic vaporization device is mainly composed of a vaporizer and a power supply device. The power supply device is used to supply power to the vaporizer, and the vaporizer can heat and vaporize vaporization liquid stored in the vaporizer after being powered on. In general, the vaporizer includes a liquid guide cotton and a heating member in contact with the liquid guide cotton. The vaporization liquid stored in the vaporizer is adsorbed by the liquid guide cotton, and the heating member heats the vaporization liquid absorbed by the liquid guide cotton after being powered on. The liquid guide cotton is prone to burning if its temperature resistance is not enough. Since it takes some time for the absorption and conduction of the vaporization liquid in the liquid guide cotton, if the liquid absorbing speed and liquid guiding speed of the liquid guide cotton are too slow, the vaporized gas generated after vaporization will be dry and light, the fragrance release is not sufficient, and in severe cases, dry burning may even occur and results in burning smell. 
     SUMMARY 
     In an embodiment, the present invention provides a composite liquid guide cotton for a vaporizer, the composite liquid guide cotton comprising: at least one heat resistant layer, at least one first isolation layer, at least one rapid liquid guide layer, and at least one second isolation layer that are stacked in sequence, wherein the heat resistant layer is configured to contact a heating body and comprises a high-temperature resistant material, and wherein a liquid guide rate of the rapid liquid guide layer is higher than a liquid guide rate of the first isolation layer and the second isolation layer. 
    
    
     
       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 view of an electronic vaporization device in Embodiment 1 of the invention. 
         FIG.  2    is a schematic exploded structural view of the electronic vaporization device in  FIG.  1   . 
         FIG.  3    is a schematic longitudinal section structural view of the electronic vaporization device in  FIG.  1   . 
         FIG.  4    is a schematic exploded structural view of a vaporizer in  FIG.  2   . 
         FIG.  5    is a schematic transversal section structural view of the vaporizer in  FIG.  2   . 
         FIG.  6    is a schematic exploded structural view of a heating assembly in  FIG.  4   . 
         FIG.  7    is a schematic top view of an end cap in  FIG.  4   . 
         FIG.  8    is a schematic longitudinal section structural view of a vaporizer in Embodiment 2 of the invention. 
         FIG.  9    is a schematic partial structural view of the vaporizer in  FIG.  8   . 
         FIG.  10    is a schematic partial sectional structural view of a vaporizer in Embodiment 3 of the invention. 
         FIG.  11    is a schematic partial sectional structural view of a vaporizer in Embodiment 4 of the invention. 
         FIG.  12    is a schematic partial sectional structural view of a vaporizer in Embodiment 5 of the invention. 
     
    
    
     DETAILED DESCRIPTION 
     In an embodiment, the present invention provides an improved composite liquid guide cotton, and a heating assembly, vaporizer and electronic vaporization device having the composite liquid guide cotton. 
     In an embodiment, the present invention provides a composite liquid guide cotton for a vaporizer. The composite liquid guide cotton includes at least one heat resistant layer, at least one first isolation layer, at least one rapid liquid guide layer and at least one second isolation layer that are stacked in sequence. The heat resistant layer is used to contact with a heating body and is made of a high-temperature resistant material, and the liquid guide rate of the rapid liquid guide layer is higher than that of the first isolation layer and the second isolation layer. 
     In some embodiments, the number of layers of the rapid liquid guide layers is two. 
     In some embodiments, the number of layers of each of the heat resistant layer, the first isolation layer, and the second isolation layer is one. 
     In some embodiments, the rapid liquid guide layer is wood pulp cotton. 
     In some embodiments, the wood pulp cotton has a weight of 50 g±10% per square meter before soaking. 
     In some embodiments, the heat resistant layer when soaked with vaporization liquid has a temperature resistance of 300° C. or above. 
     In some embodiments, the heat resistant layer is linen cotton. 
     In some embodiments, the linen cotton has a weight of 45 g±10% per square meter before soaking. 
     In some embodiments, both the first isolation layer and the second isolation layer are made of materials capable of isolating odors. 
     In some embodiments, both the liquid storage capacity of the first isolation layer and the liquid storage capacity of the second isolation layer are higher than that of the rapid liquid guide layer. 
     In some embodiments, both the first isolation layer and the second isolation layer are non-woven fabrics. 
     In some embodiments, the non-woven fabric has a weight of 75 g±10% per square meter before soaking. 
     In some embodiments, the non-woven fabric has a thickness of 0.3 mm-0.4 mm before soaking. 
     In some embodiments, the composite liquid guide cotton includes one heat resistant layer, one first isolation layer, two rapid liquid guide layers and one second isolation layer that are stacked in sequence. 
     The heat resistant layer is linen cotton, both the first isolation layer and the second isolation layer are non-woven fabrics, and the rapid liquid guide layer is wood pulp cotton. 
     The invention also provides a heating assembly, including the composite liquid guide cotton according to any one of the above and a heating body in contact with the heat resistant layer. 
     In some embodiments, the composite liquid guide cotton includes an annular first liquid guide portion, the first liquid guide portion wrapping the outside of the heating body. 
     In some embodiments, the heating assembly also includes a tubular heating base, the heating base sleeving the outside of the first liquid guide portion. 
     In some embodiments, the first liquid guide portion has a first end and a second end opposite to the first end in the circumferential direction, and the side wall of the heating base is provided with a slot through which the first end and the second end can pass. 
     In some embodiments, the composite liquid guide cotton also includes an annular second liquid guide portion wrapping the outside of the heating base, and one circumferential end of the second liquid guide portion is connected to the first end of the first liquid guide portion. 
     In some embodiments, the composite liquid guide cotton also includes a first extension portion connected to the second end of the first liquid guide portion and extending out of the slot, and a second extension portion connected to the other circumferential end of the second liquid guide portion. 
     In some embodiments, the first extension portion and the second extension portion are the same in extension direction, and the first extension portion and the second extension portion are fit to each other. 
     The invention also provides a vaporizer, including the heating assembly according to any one of the above. 
     In some embodiments, the vaporizer includes a liquid storage shell and a liquid storage member disposed in the liquid storage shell, and the liquid storage member is annular and wraps the outside of the heating assembly. 
     The invention also provides an electronic vaporization device, including the vaporizer according to any one of the above. 
     With the implementation of the invention, at least the following beneficial effects are obtained: the invention forms the composite liquid guide cotton by stacking the heat resistant layer, the first isolation layer, the rapid liquid guide layer, and the second isolation layer in sequence, and the heat resistant layer in contact with the heating body is made of the high-temperature resistant material, which can prevent the burning smell when heated; and the rapid liquid guide layer located at the middle layer has a higher liquid guide rate, which can speed up the liquid absorption and guiding of the composite liquid guide cotton, and alleviate the dryness and lightness of the vaporized gas and insufficient fragrance release, thus improving the user experience. 
     In order to understand the technical features, objects and effects of the invention clearer, the specific implementations of the invention will now be described in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, the invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below. 
     In the description of the invention, it should be understood that the orientation or positional relationship indicated by the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “axial”, “radial”, “circumferential”, and the like is based on the orientation or positional relationship shown in the accompanying drawings or the orientation or positional relationship that the product of the invention is usually placed in use, and is only used for describing the invention and simplifying the description, rather than indicating or implying a device or an element specified needs to have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limit to the invention. 
     In addition, the terms “first” and “second” are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, the feature defined with “first” or “second” may explicitly or implicitly include at least one that feature. In the description of the invention, “a plurality of” means at least two, such as two or three, unless expressly specifically limited otherwise. 
     In the invention, unless otherwise expressly specified and limited, the terms such as “installation”, “link”, “connection” and “fixation” should be understood in a broad sense, for example, it may be fixed connection or detachable connection, or integration; and it may be mechanical connection or electrical connection; and it may be direct link or indirect link through an intermediary, and it may be internal communication of two elements or interaction between two elements, unless specifically limited otherwise. For a person of ordinary skill in the art, the specific meanings of the above-mentioned terms in the invention can be understood according specific situations. 
     In the invention, unless otherwise expressly specified and limited, the first feature being “on” or “under” the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Moreover, the first feature being “above”, “over” and “onto” the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being “under”, “below” and “underneath” the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature. 
       FIGS.  1 - 3    show an electronic vaporization device  1  in Embodiment 1 of the invention. In some embodiments, the electronic vaporization device  1  may be substantially columniform, and may include a power supply device  200  and a vaporizer  100  disposed above the power supply device  200  in the longitudinal direction. The vaporizer  100  is used to accommodate vaporization liquid and heating and vaporizing the vaporization liquid to generate an aerosol, and the power supply device  200  is used to supply power to the vaporizer  100 . It can be understood that, in other embodiments, the electronic vaporization device  1  is not limited to a columniform shape, and it may also have other shapes such as an oval columnar shape, a square columnar shape, and a flat columnar shape. 
     The power supply device  200  may include a shell  80  and a battery  90  accommodated in the shell  80 . The battery  90  is electrically connected to the heating assembly  30  of the vaporizer  100  for supplying power to the heating assembly  30 . The shell  80  may be substantially cylindrical, the battery  90  may be accommodated in the lower part of the shell  80 , and an accommodating space  81  for accommodating the vaporizer  100  is formed on the upper part of the shell  80 . 
     As shown in  FIGS.  3 - 4   , in some embodiments, the vaporizer  100  may include a liquid reservoir  10 , a base  20 , a heating assembly  30 , a vent tube  40 , an end cap  50 , a liquid absorbing member  60  and a suction nozzle assembly  70 . 
     The liquid reservoir  10  is used to store the vaporization liquid, and may include a liquid storage shell  11 . In this embodiment, the liquid storage shell  11  is in a cylinder shape with both ends open. The vent tube  40  penetrates into the liquid storage shell  11  in the longitudinal direction and may be coaxially provided with the liquid storage shell  11 . An annular liquid storage space  110  is formed between the outer wall surface of the vent tube  40  and the inner wall surface of the liquid storage shell  11 . The inner wall surface of the vent tube  40  defines an airflow channel  41 . In some embodiments, the vent tube  40  may be a fiberglass tube to reduce cost. In other embodiments, the vent tube  40  may also be made of other materials such as plastic and metal. 
     In some embodiments, the liquid reservoir  10  may also include a liquid storage member  12  disposed in the liquid storage space  110  for absorbing and storing a certain amount of vaporization liquid. The liquid storage member  12  is in an annular column shape, and a through hole  120  for the vent tube  40  to pass through is formed therein in the longitudinal direction. The liquid storage member  12  may generally be a liquid storage cotton, so as to absorb and store more vaporization liquid. In some embodiments, a bayonet  121  is formed in the side wall of the liquid storage member  12 , such that the liquid storage member  12  is in a C-shaped cylindrical shape, which can facilitate the clamping of the liquid storage member  12  on the periphery of the vent tube  40 . 
     The heating assembly  30  is disposed in the liquid storage shell  11  and in contact with the liquid storage member  12 , and is used to heat and vaporize the vaporization liquid stored in the liquid storage member  12  after being powered on. A vaporization cavity  330  may be formed on the heating assembly  30  in the longitudinal direction, and the vaporization cavity  330  may be communicated with the lower end of the airflow channel  41 . The heating assembly  30  may include a composite liquid guide cotton  31  that is in contact with the liquid storage member  12  for absorbing the vaporization liquid from the liquid storage member  12 , a heating body  33  disposed on the composite liquid guide cotton  31  for heating and vaporizing the vaporization liquid after being powered on, and a heating base  32  for supporting the composite liquid guide cotton  31 . 
     As shown in  FIGS.  5 - 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 rapid liquid guide layers  313  and at least one second isolation layer  314  that are stacked in sequence. 
     The 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 that absorbs liquid quickly and is high-temperature resistant, so as to prevent burning smell during heating. In this embodiment, there is one heat resistant layer  311  and the heat resistant layer is made of linen cotton which has the advantages of fast liquid absorption, fast absorption and fast drying, high temperature resistance, less possibility of burning smell, and antibacterial property. The linen cotton may have a weight of 45 g±10% per square meter before soaking. The linen cotton when soaked with the vaporization liquid has a temperature resistance of 200° C. or above, preferably, 300° C. or above. 
     The rapid liquid guide layer  313  has a high liquid guide rate, which is better than that of the heat resistant layer  311 , the first isolation layer  312  and the second isolation layer  314 . In this embodiment, there are two rapid liquid guide layers  313  and the rapid liquid guide layer may be made of wood pulp cotton. The wood pulp cotton has a weight of 50 g±10% per square meter before soaking. By stacking two layers of wood pulp cotton, the liquid can be guided faster. In other embodiments, there may be one or more rapid liquid guide layers  313 . 
     The first isolation layer  312  and the second isolation layer  314  may be made of materials capable of isolating odors and guiding liquid quickly 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 disposed on two opposite sides of the rapid liquid guide layer  313 , and can isolate odors that may be generated by the material of the rapid liquid guide layer  313 , such that the rapid liquid guide layer  313  can have a wider selection range of materials, and thus when selecting the material of the rapid liquid guide layer  313 , only the liquid guide rate thereof needs to be considered, without considering odors. In addition, the liquid storage capacity of the first isolation layer  312  and the liquid storage capacity of the second isolation layer  314  are higher than that of the rapid liquid guide layer  313 . That is, the saturated liquid absorption per unit volume of the first isolation layer  312  and the saturated liquid absorption per unit volume of the second isolation layer  314  are greater than that of the rapid liquid guide layer  313 . In some embodiments, the liquid storage capacity of the first isolation layer  312  and the liquid storage capacity of the second isolation layer  314  are higher than that of the heat resistant layer  311 . The liquid storage capacity of the heat resistant layer  311  is higher than that of the rapid liquid guide layer  313 . The first isolation layer  312  and the second isolation layer  314  can store a larger amount of vaporization liquid, thereby further avoiding dry burning. In this embodiment, there are one first isolation layer  312  and one second isolation layer  314  and both are made of non-woven fabrics. The non-woven fabric may have a weight of 75 g±10% per square meter before soaking, and may have a thickness of 0.3 mm-0.4 mm before soaking. With the use of 75 g of non-woven fabrics, the liquid storage capacity of the composite liquid guide cotton  31  can be increased. In other embodiments, the first isolation layer  312  and the second isolation layer  314  may also be made of other materials such as mixed cotton (a mixture of linen cotton and non-woven fabric), non-woven fabric with black spots (cotton seeds), and tea fiber. 
     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  has a cross section that is in an annular shape with an opening, and has a first end  3151  and a second end  3152  opposite to the first end  3151  in the circumferential direction. From the inner layer to the outer layer, the first liquid guide portion  315  includes the heat resistant layer  311 , the first isolation layer  312 , the rapid liquid guide layer  313  and the second isolation layer  314  in sequence. The inner wall surface of the first liquid guide portion  315  defines a first cavity  3150 , and the first cavity  3150  forms the vaporization cavity  330 . The heating body  33  may be disposed on the inner wall surface of the first liquid guide portion  315 . That is, the heating body  33  is disposed 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, and in other embodiments, the heating body  33  may also be of other structures such as a spiral heating wire and a heating film. 
     The second liquid guide portion  316  is annular and disposed on the periphery of the first liquid guide portion  315 , and may be disposed coaxially with the first liquid guide portion  315 . From the inner layer to the outer layer, the second liquid guide portion  316  includes the heat resistant layer  311 , the first isolation layer  312 , the rapid liquid guide layer  313  and the second isolation layer  314  in sequence. The inner diameter of the second liquid guide portion  316  is larger than the outer diameter of the first liquid guide portion  315 . An annular second cavity  3160  is formed between the inner wall surface of the second liquid guide portion  316  and the outer wall surface of the first liquid guide portion  315 . The second cavity  3160  can be used for the heating base  32  to penetrate into. That is, the inner wall surface of the heating base  32  is in contact with the outermost second isolation layer  314  of the first liquid guide portion  315 . The outer wall surface of the heating base  32  is in contact with the innermost second isolation layer  314  of the second liquid guide portion  316 . 
     The heating base  32  may be in a round tube shape, and may include a base body  321  and an extension portion  322  extending upward from the upper end of the base body  321 . The inner diameter of the base body  321  is equal to that of the extension portion  322 , and the outer diameter of the base body  321  may be larger than that of the extension portion  322 , such that a stepped surface  323  is formed at the junction of the base body  321  and the extension portion  322 . The lower end of the vent tube  40  may sleeve the outside of the extension portion  322 , the lower end surface of the vent tube  40  may abut against the stepped surface  323 , and the 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 . The side wall of the base body  321  is also provided with at least one liquid inlet hole  3210 , such that the vaporization liquid in the liquid storage member  12  can pass through the at least one liquid inlet hole  3210 , enter the base body  321  and be absorbed by the first liquid guide portion  315 . In this embodiment, there are two liquid inlet holes  3210 , and the two liquid inlet holes  3210  may be symmetrically arranged along the circumferential direction of the base body  321 . 
     The side wall of the heating base  32  may also be provided with at least one slot  3211 . The slot  3211  may extend downward in the axial direction from the upper end surface of the extension portion  322 . The first end  3151  and the second end  3152  of the first liquid guide portion  315  can pass through the slot  3211 . In addition, the slot  3211  also has the function of communicating the liquid storage member  12  with the first liquid guide portion  315 . In this embodiment, there are two slots  3211 , the two slots  3211  may be symmetrically arranged along the circumferential direction of the heating base  32 , and the slots  3211  and the liquid inlet holes  3210  may be disposed at included angles of 90 degrees along the circumferential direction of the heating base  32 . 
     The first end  3151  of the first liquid guide portion  315  passes through the slot  3211  and is connected to one circumferential end of the second liquid guide portion  316 . The second end  3152  of the first liquid guide portion  315  passes through the slot  3211  and then extends outward in the radial direction to form the first extension portion  317 . The other circumferential end of the second liquid guide portion  316  is connected to the second extension portion  318 , and the second extension portion  318  and the first extension portion  317  may be the same in the extension direction. The second extension portion  318  and the first extension portion  317  may be assembled together and then clamped into the bayonet  121  of the liquid storage member  12 . 
     When the heating assembly  30  is assembled, a sheet-like composite liquid guide cotton material may wrap the outside of the heating body  33  first to form the first liquid guide portion  315 . Then, the first liquid guide portion  315  wrapped with the heating body  33  is inserted into the heating base  32  through the upper end opening of the heating base  32 . The second end  3152  of the first liquid guide portion  315  extends out of the slot  3211  in the radial direction to form the first extension portion  317 . The first end  3151  of the first liquid guide portion  315  passes through the slot  3211  and is wound around the heating base  32  to form the second liquid guide portion  316 . Then other end of the second liquid guide portion  316  is fit to the first extension portion  317  to form the second extension portion  318 . Finally, the liquid storage member  12  wraps the outside of the heating assembly  30 , and the first extension portion  317  and the second extension portion  318  that are fit to each other are clamped in the bayonet  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 , such that the contact area of the composite liquid guide cotton  31  and the liquid storage member  12  is greatly increased, thereby greatly increasing the liquid absorption speed of the composite liquid guide cotton  31 . 
     With reference to  FIGS.  3 - 4    again, the base  20  and the end cap  50  respectively cover two ends of the liquid storage space  110 , and may be made of elastic materials such as silica gel respectively, so as to facilitate the sealing and blocking of the two ends of the liquid storage space  110  to reduce leakage. Specifically, the base  20  may be embedded in the lower end opening of the liquid storage shell  11 , i.e., the opening of the end of the liquid storage shell  11  close to the battery  90 . The base  20  can be used to support the liquid storage member  12  and the heating assembly  30 , and an air guide hole  21  that communicates with the vaporization cavity  330  may be formed on the base  20  in the longitudinal direction. The end cap  50  may be embedded in the upper end opening of the liquid storage shell  11 , i.e., the opening of the end of the liquid storage shell  11  close to the suction nozzle assembly  70 . The end cap  50  may be provided with a vent hole  51  that communicates with the upper end of the airflow channel  41  in 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 the lower end surface of the end cap body  52 . The end cap body  52  and the nesting portion  53  may be coaxially disposed. The end cap body  52  is embedded in the upper end opening of the liquid storage shell  11 , and the outer wall surface of the end cap body  52  may be in sealing fit with the inner wall surface of the liquid storage shell  11  to avoid liquid leakage. The upper end surface of the end cap body  52  forms a support 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 the upper end surface of the liquid storage member  12  to avoid liquid leakage caused by the end cap body  52  being squeezed against the liquid storage member  12 . In 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, the outer wall surface of the nesting portion  53  is in sealing fit with the inner wall surface of the vent tube  40 , and the lower end surface of the end cap body  52  is in sealing fit with the upper end surface of the vent tube  40 . The outer diameter of the lower end of the nesting portion  53  may be gradually increased from the bottom to top, so as to form a guide slope, facilitating the insertion into the airflow channel  41 . By reducing the length of the nesting portion  53  extending into the airflow channel  41 , the length of the hole wall of the vent hole  51  for adsorbing the vaporized gas can be reduced, the loss of the aroma and sweetness of the vaporized gas can be reduced, and the accumulation of condensates in the vent hole  51  can be reduced. In some embodiments, the length of the airflow channel  41  extending into the airflow channel  41  is less than or equal to 6.5 mm. 
     The liquid absorbing member  60  is supported on the support surface  520  of the end cap  50  and is in contact with the support surface  520  for absorbing the condensates accumulated in the vent hole  51 , thereby preventing the condensates accumulated in the vent hole  51  from being sucked into the mouth of a user. The liquid absorbing member  60  may be provided with an air outlet hole  61  that communicates with the vent hole  51  in the longitudinal direction. The liquid absorbing member  60  is usually a liquid absorbing cotton to absorb and store more condensates. 
     As shown in  FIG.  7   , at least one first guide groove  521  may be disposed on the support surface  520 , and the first guide groove  521  has a first end  5211  and a second end  5212  opposite to the first end  5211 . The first end  5211  of the first guide groove  521  communicates with the vent hole  51 , and the second end  5212  of the first guide groove  521  extends in a direction away from the vent hole  51 . The condensate at the vent hole  51  may be drained through the first guide groove  521  and then absorbed by the liquid absorbing member  60  in contact with the first guide groove  521 , thereby speeding up the liquid absorbing of the liquid absorbing member  60 . Preferably, the number of the first guide grooves  521  is two or more, and the second end  5212  of the first guide groove  521  extends at least to communicate with the outer edge of the bottom surface of the liquid absorbing member  60 , so as to drain the condensate at the vent hole  51  to the entire bottom surface of the liquid absorbing member  60 . 
     There is no limitation to the shape of the first guide groove  521 , for example, it may be a straight groove or a curved groove. In this embodiment, the first guide groove  521  is a straight groove, and the first guide groove  521  may extend along the radial direction of the support surface  520 . The maximum length of the first guide groove  521  is greater than or equal to the radius of the liquid absorbing member  60 . Preferably, the number of the first guide grooves  521  is proportional to the cross-sectional area of the vent hole  51 . That is, the larger the cross-sectional area of the vent hole  51  is, the more the first guide grooves  521  are required, and the better the drainage effect is. The two or more first guide grooves  521  may be evenly distributed along the circumferential direction of the support surface  520 , so as to drain the condensate at the vent hole  51  to the entire bottom surface of the liquid absorbing member  60  uniformly and quickly. 
     Further, the support surface  520  may also be provided with at least one second guide groove  522  that communicates with the at least one first guide groove  521 . The condensate at the vent hole  51  is drained to the first guide groove  521  and the second guide groove  522  that communicates with the first guide groove  521 , and is then absorbed by the liquid absorbing member  60  in contact with the first guide groove  521  and the second guide groove  522 . In this embodiment, the second guide grooves  522  are annular, and each annular second guide groove  522  communicates with the two or more first guide grooves  521 . Preferably, the number of the second guide grooves  522  may be two or more. When the number of the second guide grooves  522  is plural, the distance between every two adjacent second guide grooves  522  in the plurality of second guide grooves  522  gradually decreases in the direction away from the vent hole  51 , which can facilitate the faster spreading of the condensate at the vent hole  51  out to the periphery more quickly to be absorbed by the liquid absorbing member  60 . In this embodiment, the maximum radius of the at least two second guide grooves  522  is equal to the maximum length of the first guide groove  521 . It can be understood that, in other embodiments, the support surface  520  may also only be provided with the first guide groove  521  without the second guide groove  522 . 
     As shown in  FIG.  3   , the suction nozzle assembly  70  includes a suction nozzle  71 . The suction nozzle  71  is disposed on the upper end of the liquid storage shell  11 , and an inhalation channel  710  that communicates with the air outlet hole  61  is formed on the suction nozzle in the longitudinal direction. The upper part of the liquid storage shell  11 , the end cap  50  and the liquid absorbing member  60  may all be accommodated in the lower part 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 connected in sequence from the bottom to top to form a vapor conveying channel  130 . The air guide hole  21  forms an air inlet channel of the vapor conveying channel  130  for introducing outside air. The airflow channel  41 , the vent hole  51 , the air outlet hole  61  and the inhalation channel  710  form an air outlet channel of the vapor conveying channel  130  together for outputting the vaporized gas. The outside air enters from the air inlet channel and is mixed with, when flows upward to the vaporization cavity  330 , aerosol that is generated by heating the vaporization liquid by the heating assembly  30 . The vaporized gas generated after mixing is then output through the air outlet channel and sucked by the user. 
     In some embodiments, the suction nozzle assembly  70  may also include a sealing plug  72 . The sealing plug  72  may be made of an elastic material such as silica gel. The sealing plug  72  is detachably plugged into the upper end of the inhalation channel  710 , and can be used to seal and block the inhalation channel  710  when the vaporizer  100  is not in use, avoiding the dust and the like from entering the inhalation channel  710 . 
       FIGS.  8 - 9    show a vaporizer  100  in Embodiment 2 of the invention. The main difference from Embodiment 1 lies in that the liquid storage member  12  in this embodiment communicates with the outside through an air pressure balance channel  54 . When the ambient temperature rises, the heated and expanded air inside the vaporizer  100  can be discharged to the outside of the vaporizer  100  through the air pressure balance channel  54  to avoid the excessive squeezing against the vaporization liquid, thereby solving the problem of liquid leakage at high temperature. 
     As mentioned 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 connected in sequence from the bottom to top to form the vapor conveying channel  130 . The air pressure balancing channel  54  may be communicated with the vapor conveying channel  130  and further communicated with the outside. Preferably, the air pressure balance channel  54  may be formed between the end cap  50  and the vent tube  40  by clearance fit, such that the liquid storage member  12  communicates with the airflow channel  41  and the vent hole  51  through the air pressure balance channel  54 , and then the liquid storage member  12  communicates with the outside. The air pressure balancing channel  54  is formed between the end cap  50  and the vent tube  40  by reserving a fitting clearance therebetween. The design is simple, and operations such as forming holes and slots in parts can be avoided. In some embodiments, the fitting clearance between the end cap  50  and the vent tube  40  may be 0 mm-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  and extending into the airflow channel  41 . The vent hole  51  runs through the end cap body  52  and the nesting portion  53  in the longitudinal direction, and may be coaxially provided with the end cap body  52  and the nesting portion  53 . An annular cavity  122  may be formed between the lower end surface of the end cap body  52  and the upper end surface of the liquid storage member  12 . A recess  523  is concavely formed in the bottom surface of the end cap body  52 , and the recess  523  may be coaxially provided with the end cap body  52 . The nesting portion  53  may be formed by extending downward from the recess bottom surface of the recess  523 . 
     The upper end of the vent tube  40  may be accommodated in the recess  523 . There is a first fitting clearance between the inner wall surface of the recess  523  and the outer wall surface of the vent tube  40 . The first fitting clearance forms a first channel  541  that communicates with the cavity  122 . There is a second fitting clearance between the recess bottom surface of the recess  523  and the upper end surface of the vent tube  40 . The second fitting clearance forms a second channel  542  that communicates with the first channel  541 . There is a third fitting clearance between the outer wall surface of the nesting portion  53  and the inner wall surface of the vent tube  40 . The third fitting clearance forms a third channel  543  that communicates 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 air pressure balance channel  54  that communicates the cavity  122  with the airflow channel  41 . When the ambient temperature rises, the heated and expanded air in the cavity  122  and the 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  sequentially, and is then discharged to the outside of the vaporizer  100  through the vapor conveying channel  130 . 
       FIG.  10    show a vaporizer  100  in Embodiment 3 of the invention. The main difference from Embodiment 2 lies in that in this embodiment, the end cap  50  includes only the end cap body  52 . Specifically, the vent hole  51  runs through the end cap body  52  in the longitudinal direction, and the upper end of the vent tube  40  extends into the vent hole  51  and communicates with the vent hole  51 . There is a fitting clearance between the outer wall surface of the vent tube  40  and the hole wall of the vent hole  51 . The fitting clearance forms the air pressure balance channel  54  that communicates the cavity  122  with the vent hole  51 . 
       FIG.  11    show a vaporizer  100  in Embodiment 4 of the invention. The main difference from Embodiment 2 lies in that in this embodiment, the end cap  50  includes only the end cap body  52 . Specifically, the vent hole  51  extends downward from the upper end surface of the end cap body  52 , and the recess  523  that communicates with the vent hole  51  is concavely formed in the bottom surface of the end cap body  52 . The outer diameter of the recess  523  is larger than that of the vent hole  51 . The upper end of the vent tube  40  may be accommodated in the recess  523 . There is a first fitting clearance between the inner wall surface  5231  of the recess  523  and the outer wall surface of the vent tube  40 . The first fitting clearance forms a first channel  541  that communicates with the cavity  122 . There is a second fitting clearance between the recess bottom surface  5232  of the recess  523  and the upper end surface of the vent tube  40 . The second fitting clearance forms a second channel  542  that communicates with the first channel  541 . The first channel  541  and the second and the channel  542  are communicated in sequence to form the air 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 Embodiment 5 of the invention. The main difference from Embodiment 2 lies in that in this embodiment, the lower end face of the end cap body  52  is in contact with the upper end face of the liquid storage member  12 , i.e., 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 . Accordingly, in this embodiment, the first channel  541  of the air pressure balance channel  54  communicates with the liquid storage member  12 . When the ambient temperature rises, the heated and expanded air in the liquid storage member  12  passes through the first channel  541 , the second channel  542  and the third channel  543  in sequence, is discharged into the airflow channel  41 , and is then discharged to the outside of the vaporizer  100  through the vapor conveying channel  130 . 
     It can be understood that the technical features above can 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.