Patent Publication Number: US-2023148668-A1

Title: Atomization core, atomizer, and atomization device

Description:
CROSS-REFERENCE TO PRIOR APPLICATION 
     This application is a continuation of International Patent Application No. PCT/CN2020/105001, filed on Jul. 28, 2020. The entire disclosure is hereby incorporated by reference herein. 
    
    
     FIELD 
     The present invention relates to the technical field of vaporization, and in particular, to a vaporization core, a vaporizer, and an electronic vaporization device. 
     BACKGROUND 
     Dozens of carcinogens existing in the burning smoke of tobacco, such as tar, will do great harm to human health. Moreover, the smoke diffuses into the air to form second-hand smoke, which will also cause harm to people around you after inhaling the second-hand smoke. Therefore, smoking is forbidden in most public places. However, the electronic vaporization device has similar appearance and taste to ordinary cigarettes, but usually does not contain other harmful components such as tar and suspended particles in cigarettes. Therefore, the electronic vaporization device is widely used as a substitute for cigarettes. 
     The electronic vaporization device usually uses a vaporization core to vaporize liquid, thereby forming aerosol (smoke) for a user to inhale. The vaporization core is electrically connected to the power supply through a lead or an ejector pin. However, in order to ensure the stability and reliability of the connection between the lead or the ejector pin and the vaporization core, the total area of the entire heating surface may be compressed, resulting in the low utilization of the heating surface, which is not conducive to the layout of the heating body on the heating surface, and ultimately affects the vaporization effect of the entire vaporization core. 
     SUMMARY 
     In an embodiment, the present invention provides a vaporization core of an electronic vaporization device, comprising: a heating body configured to generate heat; an electrode body electrically connected to the heating body; and a substrate configured to buffer liquid and having a mounting surface and a heating surface spaced apart from the mounting surface, wherein the electrode body is arranged on the mounting surface, wherein the heating body is arranged on the heating surface, and wherein the heating surface is configured to absorb heat generated by the heating body and vaporize the liquid. 
    
    
     
       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 diagram of a cross-sectional structure of a vaporizer according to an embodiment. 
         FIG.  2    is a schematic three-dimensional structural diagram of a first example vaporization core of the vaporizer shown in  FIG.  1   . 
         FIG.  3    is a partial schematic three-dimensional structural diagram of the vaporizer shown in  FIG.  2    with a substrate being removed. 
         FIG.  4    is a schematic three-dimensional structural diagram of the substrate in the vaporizer shown in  FIG.  2   . 
         FIG.  5    is a schematic three-dimensional structural diagram of a second example vaporization core of the vaporizer shown in  FIG.  1   . 
         FIG.  6    is a partial schematic three-dimensional structural diagram of the vaporizer shown in  FIG.  5    with a substrate being removed. 
         FIG.  7    is a schematic three-dimensional structural diagram of the substrate in the vaporizer shown in  FIG.  5   . 
         FIG.  8    is a schematic three-dimensional structural diagram of a third example vaporization core of the vaporizer shown in  FIG.  1   . 
         FIG.  9    is a schematic three-dimensional structural diagram of a fourth example vaporization core of the vaporizer shown in  FIG.  1   . 
         FIG.  10    is a schematic three-dimensional structural diagram of the vaporizer shown in  FIG.  9    from another perspective. 
     
    
    
     DETAILED DESCRIPTION 
     In an embodiment, the present invention improves the vaporization effect of a vaporization core. 
     In an embodiment, the present invention provides a vaporization core of an electronic vaporization device, including: 
     a heating body, configured to generate heat; 
     an electrode body, electrically connected to the heating body; and 
     a substrate, configured to buffer liquid and having a mounting surface and a heating surface spaced apart from the mounting surface, where the electrode body is arranged on the mounting surface, the heating body is arranged on the heating surface, and the heating surface is configured to absorb the heat generated by the heating body and vaporize the liquid. 
     A vaporizer is provided, including a suction nozzle and the vaporization core of any of the above. An airflow channel is formed in the suction nozzle. The vaporization core is located in the airflow channel. The airflow channel extends through a surface of the suction nozzle to form a suction nozzle opening for inhaling smoke. The heating surface is arranged facing the suction nozzle opening, and the mounting surface is arranged facing away from the suction nozzle opening. 
     An electronic vaporization device includes a power supply and the above vaporizer. The power supply includes a conductor configured to be electrically connected to the electrode body, and the conductor is located on a side where the mounting surface is located. 
     Details of one or more embodiments of the present invention are described in the following accompanying drawings and description. Other features, objects, and advantages of the present invention will be apparent from the specification, accompanying drawings, and claims. 
     In order to facilitate the understanding of the present invention, the present invention will be more fully described below with reference to the relevant accompanying drawings. 
     A preferred implementation of the present invention is shown in the accompanying drawings. However, the present invention may be implemented in many different forms and is not limited to the implementations described herein. On the contrary, these implementations are provided for a more thorough and comprehensive understanding of the disclosed content of the present invention. 
     It should be noted that when an element is considered to be “fixed” to an other element, the element may be directly on the other element or an intermediate element may exist. When an element is considered to be “connected” to an other element, the element may be directly connected to the other element or an intermediate element may exist. The terms “inside”, “outside”, “left”, “right”, and similar expressions used herein are for illustrative purposes only, and are not meant to be the only implementation. 
     Referring to  FIG.  1   , an electronic vaporization device provided in an embodiment of the present invention includes a vaporizer  10  and a power supply. The vaporizer  10  includes a suction nozzle  20  and a vaporization core  30 . A liquid storage cavity  21  and an airflow channel  22  isolated from each other are formed in the suction nozzle  20 , and the liquid storage cavity  21  is used for storing liquid. The vaporization core  30  is located in the airflow channel  22 , and the vaporization core  30  absorbs and buffers the liquid in the liquid storage cavity  21 , and vaporizes the liquid to form inhalable smoke. The smoke is essentially an aerosol. The airflow channel  22  extends through a surface (an upper end face) of the suction nozzle  20  to form a suction nozzle opening  22   c.  When the liquid is vaporized by the vaporization core  30  to form smoke discharged into the airflow channel  22 , a user may contact the suction nozzle opening  22   c  to inhale the smoke in the airflow channel  22 . The power supply includes a conductor  40 . The conductor  40  may be a conductive pillar with a columnar structure. The conductor  40  is electrically connected to the vaporization core  30 , so that the power supply supplies power to the entire vaporization core  30  through the conductor  40 , and the vaporization core  30  converts electric energy to heat energy required for liquid vaporization. 
     Referring to  FIG.  2   ,  FIG.  3   , and  FIG.  4    together, in some embodiments, the vaporization core  30  includes a substrate  100 , a heating body  200 , an electrode body  300 , and a connecting body  400 . The substrate may be made of porous glass, porous ceramics, honeycomb ceramics, and the like. In this embodiment, the substrate  100  is a porous ceramic body, that is, the substrate  100  is made of the porous ceramic material. For example, the substrate  100  may be made of aluminum oxide, silicon oxide, silicon nitride, silicate, silicon carbide, or the like, so that a large number of micro-pores exist in the substrate  100  to form a certain porosity. The porosity is defined as a ratio of the volume of pores in an object to the total volume of the material in the natural state. The porosity of the substrate  100  may range from 20% to 80%. For example, a specific value of the porosity may be 20%, 40%, 50%, or 80%. An average pore diameter of the micro-pores in the substrate  100  may range from 20 μm to 55 μm. For example, a specific value of the pore diameter is 20 μm, 30 μm, 45 μm, or 55 μm. 
     The substrate  100  may be formed by injection molding or powder pressing molding, and the shape of the substrate  100  may be a cylindrical shape or a prismatic shape. Referring to  FIG.  5   ,  FIG.  6   , and  FIG.  7    together, when the substrate  100  is prismatic, the substrate  100  may be cuboid. 
     When the substrate  100  contacts the liquid in the liquid storage cavity  21 , the substrate  100  forms capillary action due to the existence of the micro-pores, and the liquid may gradually permeate into the substrate  100  through the capillary action, so that the substrate  100  has a certain buffering function for the liquid. The flow resistance of the liquid when permeating into the substrate  100  is inversely proportional to the porosity and the average pore size of the micro-pores. A larger porosity and a larger average pore size of the substrate  100  lead to a smaller flow resistance of the liquid in the substrate  100 . In addition, the substrate  100  made of the porous ceramic material has good high temperature resistance, which prevents the liquid buffered in the substrate  100  from producing a chemical reaction with the substrate  100  at a high temperature, causing a waste of the liquid due to nonparticipation in an unnecessary chemical reaction, and avoiding various harmful substances produced by the chemical reaction. 
     Referring to  FIG.  1   ,  FIG.  2   , and  FIG.  5   , in some embodiments, the substrate  100  has a heating surface  110  and a mounting surface  120 . The heating surface  110  can absorb heat and heat up to vaporize the liquid, and the mounting surface  120  cannot vaporize the liquid. Therefore, the heating surface  110  and the mounting surface  120  are two different surfaces. The heating surface  110  and the mounting surface  120  are spaced apart in an extending direction (that is, a vertical direction) of the airflow channel  22 , and the heating surface  110  and the mounting surface  120  are oriented in just opposite directions. In this case, the heating surface  110  is arranged facing the suction nozzle opening  22   c  and facing away from the power supply, that is, the heating surface  110  is arranged facing upward. The mounting surface  120  is arranged facing away from the suction nozzle opening  22   c  and facing the power supply, that is, the mounting surface  120  is arranged facing downward. Generally speaking, the heating surface  110  is an upper surface of the substrate  100 , and the mounting surface  120  is a lower surface of the substrate  100 . In other embodiments, for example, referring to  FIG.  8   , the heating surface  110  is still arranged facing upward, the mounting surface  120  is located below the heating surface  110 , and the mounting surface  120  and the heating surface  110  are both arranged facing upward. Certainly, the mounting surface and the heating surface may be further both arranged facing downward. 
     The heating body  200  may be a metal heating body or an alloy heating body, that is, the heating body  200  may be made of a metal material or an alloy material. The alloy material may be selected from Fe—Cr alloy, Fe—Cr—Al alloy, Fe—Cr—Ni alloy, Cr—Ni alloy, titanium alloy, stainless steel alloy, Kama alloy, or the like. The heating body  200  may be formed through processes such as die stamping, casting, mechanical weaving, chemical etching, or screen printing. The substrate  100  and the heating body  200  may be integrally formed. For example, the substrate and the heating body are integrally formed by glue discharging and sintering. Certainly, the substrate  100  and the heating body  200  may also be formed separately. For example, the substrate  100  is formed first, and then the heating body  200  is connected to the substrate  100  through screen printing, glue discharging, and sintering. 
     The heating body  200  may be a strip-shaped sheet structure, and the heating body  200  may be bent to form various regular or irregular patterns. For example, the heating body  200  is S-shaped. The heating body  200  is arranged on the heating surface  110 , for example, the heating body  200  is directly attached to the heating surface  110 , so that the heating body  200  protrudes from the heating surface  110  by a certain height. For another example, a groove may be formed on the heating surface  110 . The groove is formed by recessing a part of the heating surface  110  by a set depth, and the heating body  200  is embedded in a groove  111 , so that an upper surface of the heating body  200  protrudes from the heating surface  110  by a certain height, or the upper surface of the heating body  200  is just flush with the heating surface  110 . The thickness of the heating body  200  may range from 0.01 mm to 2.00 mm, for example, a specific value of the thickness may be 0.01 mm, 0.03 mm, 0.1 mm, 2.00 mm, or the like. The width of the heating body  200  ranges from 0.05 mm to 3 mm. For example, a specific value of the width may be 0.05 mm, 0.06 mm, 0.25 mm, 30 mm, or the like. 
     The electrode body  300  is electrically connected to the heating body  200 , and the electrode body  300  is also electrically connected to the conductor  40 . The power supply successively supplies power to the heating body  200  through the conductor  40  and the electrode body  300 . The resistivity of the electrode body  300  is significantly less than the resistivity of the heating body  200 , so that the electrode body  300  has excellent conductivity. The electrode body  300  may be a sheet structure. The electrode body  300  is arranged on the mounting surface  120 . For example, the heating body  200  is directly attached to the heating surface  110 , so that the heating body  200  protrudes from the heating surface  110  by a certain height. For another example, a groove may be formed on the mounting surface  120 . The groove is formed by recessing a part of the mounting surface  120  by a set depth, and the electrode body  300  is embedded in a groove  111 , so that an upper surface of the electrode body  300  protrudes from the mounting surface  120  by a certain height, or the upper surface of the electrode body  300  is just flush with the mounting surface  120 . Two electrode bodies  300  are arranged. One electrode body  300  serves as a positive electrode and the other electrode body  300  serves as a negative electrode. 
     Since the heating body  200  is connected in series with the electrode body  300 , the resistivity of the electrode body  300  is significantly less than the resistivity of the heating body  200 . When the power supply supplies power to the heating body  200 , the heating body  200  generates a large amount of heat, and the heating surface  110  absorbs the heat generated by the heating body  200  and heats up. The temperature is enough to vaporize the liquid. However, the heat generated by the electrode body  300  may be neglected, and therefore the mounting surface  120  cannot generate a high temperature that can vaporize the liquid. 
     If the heating body  200  and the electrode body  300  are both arranged on the heating surface  110 , on the one hand, the electrode body  300  occupies part of an area of the heating surface  110 , which leads to the reduction of the effective vaporization area on the heating surface  110 , that is, the effective vaporization area is compressed, thereby reducing the vaporization amount of the liquid by the heating surface  110  per unit time and the concentration of smoke, and which also leads to a slower speed of generating smoke by the heating surface  110 , thereby affecting the sensitivity of the vaporization core  30  to an inhalation response. On the other hand, the electrode body  300  and the conductive pillar can absorb the heat on the heating surface  110 , which causes the connection failure between the electrode body  300  and the conductor  40  as a result of high temperature, thereby affecting the service life of the vaporization core  30 , and which also causes a large amount of heat loss in the heating surface  110 , thereby affecting the thermal efficiency of the heating surface  110 . 
     In the above embodiment, the heating body  200  is arranged on the heating surface  110 , and the electrode body  300  is arranged on the mounting surface  120 , that is, the heating body  200  and the electrode body  300  are arranged on different surfaces of the substrate  100 , so as to prevent the electrode body  300  and the heating body  200  from being both located on the same heating surface  110 . In this way, the electrode body  300  can be prevented from occupying the part of the area of the heating surface  110 , thereby ensuring that the heating surface  110  maintains the effective vaporization area sufficient to vaporize liquid, increasing the vaporization amount of liquid by the heating surface  110  per unit time, and increasing the concentration of smoke. The speed of generating smoke by the heating surface  110  is also increased, thereby improving the sensitivity of the vaporization core  30  to the inhalation response. In addition, the connection failure between the electrode body  300  and the conductive pillar due to the absorption of heat from the heating surface  110  may be further prevented, thereby prolonging the service life of the vaporization core  30  and reducing the heat loss of the heating surface  110  to improve the thermal efficiency of the heating surface  110 . 
     Referring to  FIG.  4    and  FIG.  7   , in some embodiments, the substrate  100  further includes a liquid absorbing surface  131 . The liquid absorbing surface  131  is connected between the heating surface  110  and the mounting surface  120 . When the heating surface  110  is an upper surface of the substrate  100  and the mounting surface  120  is a lower surface of the substrate  100 , the liquid absorbing surface  131  is actually a part of a side surface  130  of the substrate  100 . Referring to  FIG.  1   , the liquid absorbing surface  131  is configured to contact the liquid in the liquid storage cavity  21 , and the liquid contacting the liquid absorbing surface  131  may permeate into the substrate  100  under capillary action. 
     Referring to  FIG.  2   ,  FIG.  3   , and  FIG.  4   , the connecting body  400  is connected between the electrode body  300  and the heating body  200 . Two connecting bodies  400  are arranged. An upper end of one of the connecting bodies  400  is electrically connected to one end of the heating body  200  and a lower end thereof is electrically connected to one of the electrode bodies  300 , and an upper end of the other of the connecting bodies  400  is electrically connected to an other end of the heating body  200  and a lower end thereof is electrically connected to the other of the electrode bodies  300 . The connecting body  400  may be made of the same material as the heating body  200 , and the connecting body and the heating body may further be integrally formed. A through hole  101  is further formed on the substrate  100 . The through hole  101  extends in an arrangement direction and extends through both the heating surface  110  and the mounting surface  120 . The connecting body  400  is engaged with the mounting through hole  101 , so that the entire connecting body  400  extends through the inside of the substrate  100 . 
     Because the connecting body  400  extends through the inside of the substrate  100 , on the one hand, the mounting stability of the connecting body  400  can be improved, and the heating body  200  can be firmly fixed to the heating surface  110 . The connection strength between the connecting body  400  and the electrode body  300  can also be improved, so as to ensure the stability and reliability of both the connecting body  400  and the electrode body  300  in terms of mechanical connection and electrical connection. On the other hand, when the connecting body  400  is energized, the connecting body  400  generates a certain amount of heat, to preheat the substrate  100  to a certain extent. The viscosity of the liquid buffered in the substrate  100  decreases due to the absorption of heat, thereby improving the fluidity of the liquid inside the substrate  100 , that is, reducing the flow resistance of the liquid. In this way, the liquid can quickly reach the heating surface  110  from the liquid absorbing surface  131  through the inside of the substrate  100  for vaporization, thereby avoiding the dry burning phenomenon, and ensuring that the entire vaporization core  30  can meet the vaporization requirement of the high viscosity liquid. 
     Further, the spacing between the connecting body  400  and the liquid absorbing surface  131  is less than the spacing between the connecting body  400  and the geometric center of the substrate  100 . Generally speaking, the connecting body  400  is arranged closer to the liquid absorbing surface  131 . In this case, the area of the substrate  100  close to the liquid absorbing surface  131  can quickly absorb heat to improve the fluidity of the liquid, so as to ensure that the liquid quickly enters the substrate  100  from the liquid storage cavity  21  through the liquid absorbing surface  131 . 
     In other embodiments, the connecting body  400  and the heating body  200  may also be made of different materials respectively. As shown in  FIG.  8   , the connecting body  400  may be further directly attached to the outer surface of the substrate  100  without extending through the inside of the substrate  100 . 
     Referring to  FIG.  1   , if the heating surface  110  is arranged facing away from the suction nozzle opening  22   c  toward the power supply, in this case, the entire vaporization core  30  partitions the airflow channel  22  into two parts. A part of the airflow channel  22  above the vaporization core  30  is denoted as an upper channel  22   a,  and a part of the airflow channel  22  below the vaporization core  30  is denoted as a lower channel  22   b.  In addition, the conductor  40  is also located in the lower channel  22   b.  When the heating body  200  is in operation, the smoke generated on the heating surface  110  will first enter the lower channel  22   b,  then pass through the part of the airflow channel  22  between the vaporization core  30  and the suction nozzle  20  and enter the upper channel  22   a,  and finally the smoke is absorbed by the user through the suction nozzle opening  22   c.  The design mode may be referred to as “a downward vaporization mode” for short. 
     The above “downward vaporization mode” has at least the following four defects. First, because the smoke is first discharged into the lower channel  22   b,  and the conductor  40  occupies part of the space in the lower channel  22   b,  the total space of the lower channel  22   b  is compressed and reduced, which is not conducive to the full vaporization of the liquid. Second, the smoke discharged into the lower channel  22   b  contacts the conductor  40 , and the conductor  40  hinders the circulation and transmission of smoke, which affects the transmission speed of smoke in the airflow channel  22 . Third, the smoke generated on the heating surface  110  passes through a long path and reaches the suction nozzle opening  22   c,  which increases the probability that the smoke will condense in the airflow channel  22  to form large-particle droplets, thereby reducing the concentration due to smoke loss, and also causing the large-particle droplets to block the airflow channel  22  or leak to the power supply to erode the power supply. If it is necessary to reduce smoke solidification, higher requirements are to be imposed on the structural design of the entire airflow channel  22 , which may increase the design and manufacturing costs of the entire electronic vaporization device. Fourth, the liquid tends to gather on the heating surface  110  under the action of gravity. In a case that the viscosity of the liquid itself is low, the liquid gathered on the heating surface  110  drops from the vaporization core  30 , thereby causing liquid leakage. 
     Referring to  FIG.  1   , in the above embodiment, the heating surface  110  is arranged facing the suction nozzle opening  22   c  (that is, arranged facing upward), and the mounting surface  120  is arranged facing away from the suction nozzle opening  22   c  and facing the power supply (that is, arranged facing downward), so that the conductor  40  is located on a side where the mounting surface  120  is located. That is to say, the conductor  40  is located in the lower channel  22   b.  When the heating body  200  is in operation, the smoke generated on the heating surface  110  directly enters the upper channel  22   a  instead of being discharged to the lower channel  22   b.  The design mode may be referred to as “an upward vaporization mode” for short. The above “upward vaporization mode” has at least the following four beneficial effects. First, smoke is directly discharged into the upper channel  22   a,  and the conductor  40  in the lower channel  22   b  does not occupy the space of the upper channel  22   a,  so that the space of the upper channel  22   a  is large enough to facilitate the full vaporization of liquid. Second, the smoke is directly discharged into the upper channel  22   a,  and the conductor  40  in the lower channel  22   b  does not contact the smoke in the upper channel  22   a,  thereby effectively avoiding the obstruction of the smoke by the conductor  40  and improving the circulation speed of the smoke in the airflow channel  22 . Third, the smoke generated on the heating surface  110  directly reaches the suction nozzle opening  22   c  through the upper channel  22   a  to be absorbed by the user, thereby eliminating the flow path of smoke from the lower channel  22   b  to the upper channel  22   a,  and reducing the path length through which the smoke reaches the suction nozzle opening  22   c,  so that the probability that the smoke condenses in the airflow channel  22  to form large-particle droplets is reduced, which prevents the reduction of the concentration due to smoke loss, and also effectively prevents the large-particle droplets from blocking the airflow channel  22  or leaking to the power supply to erode the power supply. In addition, the requirements of the airflow channel  22  in structural design can be appropriately reduced, thereby reducing the design and manufacturing costs of the entire electronic vaporization device. Fourth, the liquid is aggregated against gravity upward to the heating surface  110 , thereby reducing the possibility of liquid dropping from the vaporization core  30  and causing leakage. 
     Referring to  FIG.  1    and  FIG.  2   , in some embodiments, an air guide hole  102  is further formed on the substrate  100 . The air guide hole  102  extends through both the mounting surface  120  and the heating surface  110 . When the user inhales at the suction nozzle opening  22   c,  gas may enter the upper channel  22   a  from the lower channel  22   b  through the air guide hole  102 , so that the gas carries smoke to the suction nozzle opening  22   c.  The caliber of the air guide hole  102  ranges from 0.05 mm to 5.00 mm. For example, a specific value of the caliber of the air guide hole  102  may be 0.05 mm, 1 mm, 4 mm, 5 mm, or the like. One or more air guide holes  102  may be arranged. The air guide hole  102  may be a round hole, an elliptical hole, a regular polygonal hole, or the like. The mounting surface  120  and the heating surface  110  may be two planes parallel to each other. Certainly, the mounting surface  120  and the heating surface  110  may further be curved surfaces. 
     In some embodiments, a groove  111  is formed on the mounting surface  120 . The groove  111  is recessed toward the heating surface  110  by a set depth. By arranging the groove  111 , the total weight of the vaporization core  30  can be reduced, and the flow resistance of the liquid in the substrate  100  can be reduced, so that the liquid can quickly reach the heating surface  110  from the liquid absorbing surface  131 . 
     Referring to  FIG.  9    and  FIG.  10    together, the substrate  100  may further include a base portion  140  and a boss portion  150 . The base portion  140  has a step surface  141 , and the mounting surface  120  is located on the base portion  140 . The mounting surface  120  and the step surface  141  are oriented in opposite directions, that is, the step surface  141  is arranged facing upward and the mounting surface  120  is arranged facing downward. 
     The boss portion  150  is connected to the step surface  141 , and the boss portion  150  protrudes from the step surface  141  by a certain height. The heating surface  110  is located on the boss portion  150 , so that the heating surface  110  is arranged upward. When the substrate  100  is mounted on the suction nozzle  20 , the step surface  141  and the boss portion  150  can provide a good limiting function for the whole substrate  100 , thereby improving the stability and reliability of the mounting of the vaporization core  30 . 
     In some embodiments, the vaporizer  10  and the power supply are detachably connected. When the vaporizer  10  is a disposable consumable, the used vaporizer  10  can be conveniently unloaded from the power supply and discarded separately, and the power supply may be used with a new vaporizer  10  to realize recycling. 
     The technical features of the above embodiments can be arbitrarily combined. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as no contradiction exists in the combinations of these technical features, the technical features should be considered as the scope of this specification. 
     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.