Electronic cigarette atomizer

Abstract

The disclosure discloses an electronic cigarette vaporizer, comprising a hollow housing, a vaporizing support, a porous ceramic heating element, and a vaporizing base; The vaporizing support comprises a first housing and a second housing, the first housing comprises the tubular body having a bottom portion provided on left and right sides with a flat flange extending laterally, a lower portion of the flat flange is connected in middle with a frame, and inside the tubular body and the frame, a first cavity allowing for vertical communication is defined, the second housing is tunnel-shaped and extends laterally in the first cavity. The second housing is connected at left and right ends with the first housing and is provided at the joint with a liquid guiding through hole extending there-through, gaps are provided between front and rear ends of the second housing and the first housing, and a bottom portion of the second housing is open; The porous ceramic heating element is nested in a lower half portion of the second housing, the inner wall of an upper half portion of the second housing and an upper surface of the porous ceramic heating element enclose a second cavity which is not in communication with the first cavity, and the second cavity and the liquid guiding through hole form a liquid guiding channel running through both left and right sides.

Description

TECHNICAL FIELD

[0001] The disclosure relates to the field of the electronic cigarette vaporizing technology, and more particularly, the disclosure relates to an electronic cigarette vaporizer.BACKGROUND

[0002] An existing electronic cigarette, as an electronic vaporizing device, generally includes a battery part and a vaporizer. The battery part may be mounted with a battery for supplying power to the vaporizer. The vaporizer comprises a heating element disposed in a vaporizing device. The heating element can heat and atomize the to-be-vaporized solution, i.e., the vaporizing liquid, into vapor fog or aerosol when powered on. The vaporizing liquid is namely the cigarette liquid stored in the liquid storage chamber of the vaporizer.

[0003] For electronic cigarette vaporizers available in the market, porous ceramic heating elements, which are known in the art, have been widely used as the heating elements of vaporizers. Such porous ceramic heating elements are usually provided inside with liquid guiding grooves, liquid guiding holes, or airflow through-holes. However, such grooves and holes may increase the difficulty of the manufacturing process of the porous ceramic heating elements and may lead to cracking during high-temperature operation, thereby making the vaporizer prone to malfunction and liquid leakage. In addition, due to the design of such grooves and holes in the porous ceramic heating elements, the airflow channel and the liquid guiding channel are very close to each other. When a negative pressure is generated in the vaporizing chamber, the cigarette liquid in the liquid guiding channel may be suctioned into the airflow channel, resulting in the leakage of cigarette liquid.

[0004] Moreover, during the operation of the vaporizer, when a user vapes and inhales the vapor of the electronic cigarette, a certain negative pressure will be generated in the vaporizing chamber and the vaporizing channel to facilitate the suction of vapor or airflow. As the cigarette liquid in the liquid storage chamber is consumed, a certain negative pressure may be generated in the liquid storage chamber. Such negative pressure is difficult to eliminate due to the seal performance of the liquid storage chamber. Thus, after a certain period of accumulation, the negative pressure in the liquid storage chamber may gradually increase. When the negative pressure in the liquid storage chamber accumulates to a certain extent, the vaporizing liquid stored inside may be suctioned back due to the negative pressure and will be difficult to permeate through the porous ceramic body, thereby causing a lack of vaporizing liquid during the operation of the heating element, leading to a continuous reduction in the amount of vaporization, and even easily resulting in erosion and damage of the porous ceramic heating element caused by dry-heating.SUMMARYTechnical problems

[0005] Aiming at the disadvantages of the prior art, an objective of the disclosure is to provide an electronic cigarette vaporizer which avoids leakage of the vaporizing liquid and reduces negative pressure in the liquid storage chamber.Technical solutions

[0006] In order to achieve the above mentioned objective of the disclosure, a technical solution of the disclosure is provided as follows. An electronic cigarette vaporizer comprises a hollow housing, in which a vaporizing device is disposed, and the vaporizing device comprises a vaporizing support, a porous ceramic heating element disposed in the vaporizing support, and a vaporizing base connected with a lower portion of the vaporizing support;

[0007] The vaporizing support comprises a hollow first housing and a hollow second housing, the first housing comprises a tubular body, a bottom portion of the tubular body is provided on left and right sides thereof with a flat flange extending laterally, a lower portion of the flat flange is connected in a middle with a frame, and inside the tubular body and the frame, a first cavity allowing for vertical communication is defined, the second housing is tunnel-shaped and extends laterally in the first cavity, the second housing is connected at left and right ends thereof with the first housing and is provided, at a position in connection with the tubular body, with a liquid guiding through hole extending there-through, gaps are provided between front and rear ends of the second housing and the first housing, and a bottom portion of the second housing is open;

[0008] The porous ceramic heating element is nested in a lower half portion of the second housing, an inner wall of an upper half portion of the second housing and an upper surface of the porous ceramic heating element enclose and define a second cavity, the second cavity and the first cavity are not in communication with each other, and the second cavity and the liquid guiding through hole form a liquid guiding channel running through both left and right sides.

[0009] Preferably, the vaporizing base may have a same cross-section shape as that of the flat flange, an upper portion of the vaporizing base may be concaved downwardly to define a cavity, the cavity may be provided at a bottom center with an air intake through hole, the cavity may be provided at an outer side with an annular groove, the frame of the vaporizing support may be inserted and connected within the annular groove, and upper plane surfaces of the vaporizing base on both left and right sides may fit to a lower plane surface of the flat flange; a bottom portion of the porous ceramic heating element may be fully exposed in the cavity, the cavity may form a vaporizing chamber, two sides of the cavity may communicate upwardly with the first cavity, and the air intake through hole, the cavity, and the first cavity may be in communication to form an airflow channel.

[0010] Preferably, a top portion of the second housing may gradually extend upwards from a middle to left and right sides along the liquid guiding through hole, to facilitate discharging of bubbles in the liquid guiding channel.

[0011] Preferably, the vaporizing base may be made of a material having a seal performance, and the vaporizing base may be provided on an outer wall with an annular ridge.

[0012] Preferably, the porous ceramic heating element is designed as cuboid-shaped, and an outer sidewall of the porous ceramic heating element may be further enclosed by a sealing sleeve.

[0013] Preferably, an outer sidewall of the frame of the vaporizing support may be provided with a curved-shaped air return groove, a bottom end of the air return groove may be in communication with a bottom portion of the first cavity, and an upper end of the air return groove may be in communication with an outer wall of the flat flange, whereby the air return groove and the vaporizing base may enclose and define an air return channel.

[0014] Preferably, the porous ceramic heating element may comprise a porous ceramic body and a heating resistor disposed at a bottom portion of the porous ceramic body, the heating resistor may be composed of a heating wire, or a heating sheet, or a heating film, and both ends of the heating resistor may be arranged with electrode terminals.

[0015] Preferably, the housing may have an upper end provided with a mouthpiece and a lower end provided with an opening, the mouthpiece may extend inward the housing and may be formed with a vapor outlet tube, the vaporizing device may be inserted into the housing through the opening, an upper end of the tubular body of the vaporizing support may be connected with the vapor outlet tube, and an outer wall of the vaporizing base may tightly abut against an inner wall of the housing, a liquid storage chamber for storing a vaporizing liquid may be defined by a cavity space between the inner wall of the housing, the vapor outlet tube, and the vaporizing support, and the vaporizing liquid inside the liquid storage chamber may flow to an upper surface of the porous ceramic heating element through the liquid guiding channel.

[0016] Preferably, the upper end of the tubular body of the vaporizing support may be connected with the vapor outlet tube via a liquid separating base having a seal performance.

[0017] Preferably, the vaporizing device may further comprise a base, the base may be connected with a bottom portion of the vaporizing base and may be nested in the opening of the housing, the base may be arranged with two electrode columns, top portions of the electrode columns may pass through the vaporizing base and abut against two electrode terminals of the heating resistor located at the bottom portion of the porous ceramic heating elementAdvantages

[0018] The particular structural design of the vaporizing support of the electronic cigarette vaporizer makes it easy to install the porous ceramic heating element which is cuboid-shaped. It ensures non-communication between the liquid guiding channel and the airflow channel, to prevent leakage of the vaporizing liquid. Furthermore, the tunnel-shaped liquid guiding channel has a larger conduction area to ensure sufficient liquid supply. As the porous ceramic heating element is designed to have a cuboid structure without any liquid guiding groove, liquid guiding hole, or airflow through-hole and the like, the device has simplified manufacturing process and reduced production costs, achieves elimination of the risk of cracking during production or high-temperature operation, and avoids the problem of the vaporizer of being prone to malfunction and liquid leakage. The sealing sleeve sleeved on the outer sidewall of the porous ceramic heating element prevents the vaporizing liquid from permeating through the outer sidewall around the porous ceramic body to leak out, thereby increasing the efficiency of the vaporizing liquid conducting from top to bottom within the porous ceramic body. Thus, it improves the conversion efficiency of the vaporizing liquid and increases the vaporization amount. The structure of the air return groove provided on the outer sidewall of the frame of the vaporizing support functions to achieve air returning, to reduce the negative pressure in the liquid storage chamber. It avoids the lack of vaporizing liquid, the continuous reduction in the amount of vaporization, and the erosion and damage of the porous ceramic heating element caused by dry-heating, which may occur due to the negative pressure accumulated in the liquid storage chamber, during the operation of the porous ceramic heating element. In this way, it ensures the normal stable operation of the vaporizer.BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG.1 is an exploded perspective view of a vaporizer according to embodiment 1; FIG.2 is a side cross-sectional view of a vaporizing support mounted with a porous ceramic heating element according to embodiment 1; FIG.3 is a front cross-sectional view of a vaporizing support mounted with a porous ceramic heating element according to embodiment 1; FIG.4 is a first perspective view of a vaporizing support according to embodiment 1; FIG.5 is a second perspective view of a vaporizing support according to embodiment 1; FIG.6 is a top view of a vaporizing support according to embodiment 1; FIG.7 is a bottom view of a vaporizing support according to embodiment 1; FIG.8 is a perspective view illustrating a porous ceramic heating element and a sealing sleeve according to embodiment 1, in a disassembled state; FIG.9 is a perspective view of a vaporizing base according to embodiment 1 of the disclosure; FIG.10 is a side cross-sectional view of a vaporizer according to embodiment 1 of the disclosure; FIG.11 is a front cross-sectional view of a vaporizer according to embodiment 1 of the disclosure; FIG.12 is a side cross-sectional view of a vaporizing support according to embodiment 2; FIG.13 is a front cross-sectional view of a vaporizing support according to embodiment 2; FIG.14 is a front cross-sectional view of a vaporizer according to embodiment 2. DETAILED DESCRIPTION OF ILLUSTRATED EMBODIMENTS

[0020] The electronic cigarette vaporizer of the disclosure may be connected with a battery part to constitute an electronic cigarette. For convenience of description, the electronic cigarette vaporizer is disposed in such a manner that it faces forward and the mouthpiece 10 is vertically disposed to face upward, as shown in FIG.11. The terms, such as "upper", "lower", "upper portion", "lower portion", "upper end", "lower end", "upper surface", "lower surface", "upwards", "downwards", "front and rear", and "left and right" as used herein for illustrating the components, refer to up and down and left and right position and orientation relationships when the vaporizer is disposed as shown in FIG.11.Embodiments of the disclosure

[0021] The disclosure will be further explained in detail with reference to particular embodiments and the drawings.Embodiment 1

[0022] Referring to FIG.1, the electronic cigarette vaporizer in the embodiment has an approximately elliptical shaped cross-section, and has a flatter shape at the upper end where the mouthpiece is located. In the embodiment, the electronic cigarette vaporizer comprises a hollow housing 1 and a vaporizing device disposed in the housing 1. Herein, the vaporizing device comprises a liquid separating base 2, a vaporizing support 3, a porous ceramic heating element 4, a sealing sleeve 5, a vaporizing base 6, electrodes 7, and a base 8. The bottom portion of the base 8 is further provided with magnets 9 for facilitate a magnetic connection between the electronic cigarette vaporizer and the battery part.

[0023] Referring to FIGs.2-7, the vaporizing support 3 comprises a hollow first housing 31 and a hollow second housing 32. The first housing 31 comprises a tubular body 311 which approximates a square. The bottom portion of the tubular body 311 is provided on the left and right sides with a flat flange 312 extending laterally. The lower portion of the flat flange 312 is connected, in the middle along a direction coaxial with the tubular body 311, with a rectangular frame 313. A first cavity 310 allowing for vertical communication is defined inside the tubular body 311 and the rectangular frame 313. The second housing 32 is tunnel-shaped and extends laterally between the left and right sides, inside the first cavity 310. The upper half portion of the second housing 32 is located within the tubular body, and the lower half portion is located within the frame. The top portion of the second housing 32 has the shape of a tunnel dome. The left and right ends of the second housing 32 are connected with the first housing 31, and are provided with a liquid guiding through hole 314 extending there-through, at the position connected with the tubular body 311. The front and rear ends of the second housing 32 and the first housing 31 are not connected, but instead, are provided with gaps therebetween. The gaps ensure communication of the first cavity from top to bottom and facilitate upward flow of the air or vapor fog. The bottom portion of the second housing 32 is open to allow the porous ceramic heating element 4 to be mounted upward. The flat flange 312 is further provided with liquid filling holes 316 which allow filling of vaporizing liquid the liquid filling holes 316 during production and manufacturing.

[0024] The porous ceramic heating element 4 may be inserted upward into the lower half portion of the second housing 32 from bottom. The inner wall of the upper half portion of the second housing 32 and the upper surface of the porous ceramic heating element 4 enclose and define a second cavity 320. The second cavity 320 and the first cavity 310 are not in communication with each other. The liquid guiding through hole 314 and the second cavity 320 are in communication with each other, to form a liquid guiding channel 320 running through both left and right sides. The aforementioned second housing 32, which is tunnel-shaped and designed with the open bottom portion, allows the porous ceramic heating element 4 to be inserted upward into the second housing 32. Furthermore, the tunnel-shaped liquid guiding channel 320 achieves a larger conduction area, thereby enabling the vaporizing liquid to easily pass through the liquid guiding channel and arrive at the upper surface of the porous ceramic heating element 4. In such a case, sufficient liquid supply may be ensured.

[0025] Referring to FIGs.4 and 5, the outer sidewall of the frame 313 of the vaporizing support 3 may be provided with a zigzag, curved-shaped air return groove 315. The bottom end of the air return groove 315 may be in communication with the bottom portion of the first cavity 310, and the upper end of the air return groove 315 may be in communication with the outer wall of the flat flange 313, whereby the air return groove 315 and the vaporizing base 6 enclose and define an air return channel.

[0026] Referring to FIG.8, the porous ceramic heating element 4 may be designed as a cuboid, with the outer sidewall of the porous ceramic heating element 4 being further surrounded by a sealing sleeve 5. The porous ceramic heating element 4 may comprise a porous ceramic body 4 and a heating resistor (not shown in the drawings) disposed at the bottom portion of the porous ceramic body 4. The heating resistor may be composed of a heating film, with electrode terminals provided at both ends. In further embodiments, the heating resistor may be composed of a heating wire, a heating sheet, or the heating film. As the porous ceramic heating element 4 is designed as a cuboid without any liquid guiding groove, liquid guiding hole, or airflow through-hole and the like, the device has simplified manufacturing process and reduced production costs, achieves elimination of the risk of cracking during production or high-temperature operation, and avoids the problem of the vaporizer of being prone to malfunction and liquid leakage.

[0027] Referring to FIG. 9, the vaporizing base 6 may have a same cross-section shape as that of the flat flange 312. The upper portion of the vaporizing base 6 may be concaved downwardly to define a cavity 60. The cavity 60 may be provided at its bottom center with an air intake through hole 61. The cavity 60 may be provided at its outer side with an annular groove 62, and the frame 313 of the vaporizing support may be inserted and connected within the annular groove 62. The upper plane surfaces of the vaporizing base 6 on both left and right sides may fit onto the lower plane surface of the flat flange 312. To facilitate a tight connection with the vaporizing support and prevent leakage of the vaporizing liquid, the vaporizing base 6 may be made of materials, such as soft silicone, which have a seal performance. To achieve an improved seal performance, the vaporizing base 6 may be provided on its outer wall with annular ridges 63 for facilitating tight fitting on the inner wall of the housing 1. Furthermore, the vaporizing base 6 may be further provided with liquid filling holes 64, at positions corresponding to the liquid filling holes 316 of the flat flange. The liquid filling holes 316 and the liquid filling holes 64 are respectively vertically aligned and in communication with each other, to facilitate the filling of vaporizing liquid through the liquid filling holes 316 and the liquid filling holes 64 during production and manufacturing.

[0028] The bottom portion of the porous ceramic heating element 4 is fully exposed in the cavity 60, and the cavity 60 forms the vaporizing chamber 60. The two sides of the vaporizing chamber 60 communicate upwardly with the first cavity 310. The air intake through hole 61, the vaporizing chamber 60, the first cavity 310, and the vapor outlet tube 11 described below, and the mouthpiece 10, are in communication to form the airflow channel.

[0029] Referring to FIGs.10 and 11, the housing 1 has the upper end provided with the mouthpiece 10 and the lower end provided with an opening 12. The mouthpiece 10 extends inward the housing and is formed with a vapor outlet tube 11. The vaporizing device may be inserted into the housing 1 through the opening 12. The upper end of the tubular body 311 of the vaporizing support 3 is connected with the vapor outlet tube 11, and the outer wall of the vaporizing base 5 tightly abuts against the inner wall of the housing 1.

[0030] The liquid storage chamber 100 for storing the vaporizing liquid is defined by the cavity space between the inner wall of the housing 1, the vapor outlet tube 11, and the vaporizing support 3. The vaporizing liquid inside the liquid storage chamber 100 can flow to the upper surface of the porous ceramic heating element 4 through the liquid guiding channel 320.

[0031] The upper end of the tubular body 311 of the vaporizing support 3 is connected with the vapor outlet tube 311 via the liquid separating base 2 which has a seal performance.

[0032] The vaporizing device may further comprise a base 8. The base 8 may be connected with the bottom portion of the vaporizing base 5 and may be nested in the opening 12 of the housing 1. The base 8 may be arranged with two electrode columns 7. The top portions of the electrode columns 7 may pass through the vaporizing base 5 and then abut against the two electrode terminals of the heating resistor located at the bottom portion of the porous ceramic heating element 4.

[0033] On the left and right sides of the base 8, plungers 81 which protrude upwards are provided, to block the liquid filling holes 316 and the liquid filling holes 64. During manufacturing and production, after the filling of the vaporizing liquid into the liquid storage chamber 100 through the liquid filling holes 316 and the liquid filling holes 64, the base 8 may be mounted upward. At this moment, the plungers 81 provided on the base 8 may plug and seal the liquid filling holes 316 and the liquid filling holes 64 upwards to prevent liquid leakage.

[0034] The series of arrows A-A as shown in FIG.10 indicate the direction of the airflow. That is, during the operation of the vaporizer, the user may inhale from the mouthpiece 10, such that a negative pressure may be generated in the vapor outlet tube 11 and the vaporizing chamber 60, and outside air may flow into the vaporizing chamber 60 through the air inlets of the base 7 and the air intake through hole 61 of the vaporizing base 6. In such a case, the vaporizing liquid may be heated and vaporized at the bottom portion of the porous ceramic heating element 4, to produce the electronic cigarette vapor in the vaporizing chamber 60. The electronic cigarette vapor may be carried by the entered outside air, and continue to flow upwards through both sides of the porous ceramic body 4, the first cavity 310, the vapor outlet tube 11, and the mouthpiece 10, and then inhaled by the user.

[0035] The series of arrows B as shown in FIG.11 indicate the flow direction of the vaporizing liquid during the operation of the vaporizer. That is, during the operation of the vaporizer, the vaporizing liquid stored in the liquid storage chamber 100 may enter the second cavity 320 through the liquid guiding through hole 314, and then, by means of the porous ceramic body 4 located at the bottom portion of the second cavity 320, may penetrate and conduct downward from the upper surface to the lower surface of the porous ceramic body 4. The heating resistor, located on the lower surface, may begin to generate heat upon energization. The vaporizing liquid which is in contact with the heating resistor may be continuously heated and vaporized into vaporous aerosol, namely the electronic cigarette vapor fog. The electronic cigarette vapor fog may distribute downward in the vaporizing chamber 60 and then inhaled by the user. In the embodiment, the outer sidewall of the porous ceramic heating element 4, namely the porous ceramic body 4, may be further enclosed by the sealing sleeve 5. It ensures that the vaporizing liquid absorbed within the porous ceramic body 4 can only penetrate and conduct from its upper surface to its lower surface, preventing penetration and leakage through the outer sidewalls around the porous ceramic body 4. This prevents the vaporizing liquid from being suctioned out through the outer sidewalls around the porous ceramic body 4 to cause leakage due to the negative pressure generated in the vaporizing chamber 60 when a user vapes. Meanwhile, it enhances the conduction efficiency of the vaporizing liquid from top to bottom within the porous ceramic body 4, improves the conversion efficiency of the vaporizing liquid, and increases the vaporization amount.

[0036] As the air return groove 315 provided on the outer sidewall of the frame 313 of the vaporizing support 3 has the bottom end in communication with the bottom portion of the first cavity 310 (i.e., in communication with the vaporizing chamber 60) and the upper end in communication with the outer wall of the flat flange 313 (i.e., in communication with the liquid storage chamber 100), the air return groove 315 and the vaporizing base 6 enclose and define the air return channel. The air return channel has effects as follows. When the vaporizer stops operation, the pressure within the vaporizing chamber 60 returns from negative pressure to atmospheric pressure. In such a case, if the negative pressure accumulates in the liquid storage chamber 100, the pressure in the vaporizing chamber 60 will be greater than that in the liquid storage chamber 100. Consequently, the air inside the vaporizing chamber 60 can enter the air return channel from the bottom end of the air return groove 315, pass through the zigzag and curved air return channel, and flow from the upper end of the air return groove 315, through the gap between the outer wall of the flat flange 313 and the inner wall of the housing 1, and into the liquid storage chamber 100. Consequently, the negative pressure in the liquid storage chamber 100 can be eliminated. Thus, during the operation of the vaporizer, the negative pressure in the liquid storage chamber 100 can be eliminated, and thus the vaporizing liquid can be easily guided from the liquid storage chamber to the porous ceramic body 4 and permeate out through its bottom, thereby ensuring prompt and timely liquid supply during vaporization. Hence, it avoids the lack of vaporizing liquid, the continuous reduction in the amount of vaporization, and the erosion and damage of the porous ceramic heating element caused by dry-heating, which may occur due to the negative pressure accumulated in the liquid storage chamber 100, during the operation of the porous ceramic heating element 4. In this way, it ensures the normal stable operation of the vaporizer. Moreover, due to the zigzag and curved shape of the air return groove 315 from top to bottom, the air return channel is elongated and narrow, and thus can offer a relatively great resistance to the liquid flow. Consequently, the vaporizing liquid in the liquid storage chamber 100 can be prevented from being suctioned back into the vaporizing chamber 60 through the air return channel, even when the negative pressure is generated in the vaporizing chamber 60.Embodiment 2

[0037] Referring to FIGs.12-14, in addition to other unchanged structures in Embodiment 1, the top portion of the second housing 32 of the vaporizing support 3 may be shaped to gradually extend upwards from the middle to the left and right sides along the liquid guiding through hole 314, to facilitate discharging of the bubbles in the liquid guiding channel 320.

[0038] Since the vaporizing liquid in the liquid storage chamber 100 gradually permeates and conducts to the bottom portion of the porous ceramic heating element 4 to be heated and vaporization as the operation of the vaporizer, the vaporizing liquid continuously decreases. After the negative pressure is generated in the liquid storage chamber 100, the air in the vaporizing chamber 60 can gradually permeate upwards from the bottom through the gaps in the porous ceramic body 4 and then may be evolved from its upper surface to form bubbles which may accumulate at the top portion of the second housing 32. If the bubbles cannot be smoothly discharged, the sufficient supply of the vaporizing liquid from the liquid storage chamber 100 to the liquid guiding channel 320 may be affected. In the embodiment, as the top portion of the second housing 32 gradually extends upwards from the middle to the left and right sides along the liquid guiding through hole 314, the accumulated bubbles can be smoothly discharged upwards along the top portion of the second housing which gradually extends upwards towards the two sides. This allows for prompt discharge of the bubbles from the liquid guiding channel 320, thereby facilitating sufficient supply of the vaporizing liquid. In the embodiment, the top portion of the second housing 32 which extends upwards from the middle towards the left and right sides may be arc-shaped. However, in other embodiments, it may be straight-lined or of other shapes.Industrial applicability

[0039] All the above are merely preferred embodiments of the disclosure. The present invention is intended to cover all equivalent arrangements and modifications derived from the claims of the present invention.

Claims

1. An electronic cigarette vaporizer, characterized by: comprising a hollow housing (1), in which a vaporizing device is disposed, wherein the vaporizing device comprises a vaporizing support (3), a porous ceramic heating element (4) disposed in the vaporizing support (3), and a vaporizing base (6) connected with a lower portion of the vaporizing support (3); the vaporizing support (3) comprises a hollow first housing (31) and a hollow second housing (32), the first housing (31) comprises a tubular body (311), a bottom portion of the tubular body (311) is provided on left and right sides thereof with a flat flange (312) extending laterally, a lower portion of the flat flange (312) is connected in a middle with a frame (313), and inside the tubular body (311) and the frame (313), a first cavity (310) allowing for vertical communication is defined, the second housing (32) is tunnel-shaped and extends laterally in the first cavity (310), the second housing (32) is connected at left and right ends thereof with the first housing (31) and is provided, at a position in connection with the tubular body (311), with a liquid guiding through hole (314) extending there-through, gaps are provided between front and rear ends of the second housing (32) and the first housing (31), and a bottom portion of the second housing (32) is open; and the porous ceramic heating element (4) is nested in a lower half portion of the second housing (32), an inner wall of an upper half portion of the second housing (32) and an upper surface of the porous ceramic heating element (4) enclose and define a second cavity (320), the second cavity (320) and the first cavity (310) are not in communication with each other, and the second cavity (320) and the liquid guiding through hole (314) form a liquid guiding channel running through both left and right sides.

2. The electronic cigarette vaporizer according to claim 1, wherein the vaporizing base (6) has a same cross-section shape as that of the flat flange (312), an upper portion of the vaporizing base (6) is concaved downwardly to define a cavity (60), the cavity (60) is provided at a bottom center with an air intake through hole (61), the cavity (60) is provided at an outer side with an annular groove (62), the frame (313) of the vaporizing support is inserted and connected within the annular groove (62), and upper plane surfaces of the vaporizing base (6) on both left and right sides fit onto a lower plane surface of the flat flange (312); a bottom portion of the porous ceramic heating element (4) is fully exposed in the cavity (60), the cavity (60) forms a vaporizing chamber, two sides of the cavity (60) communicate upwardly with the first cavity (310), and the air intake through hole (61), the cavity (60), and the first cavity (310) are in communication to form an airflow channel.

3. The electronic cigarette vaporizer according to claim 1, wherein a top portion of the second housing (32) gradually extends upwards from a middle to left and right sides along the liquid guiding through hole (314), to facilitate discharging of bubbles in the liquid guiding channel.

4. The electronic cigarette vaporizer according to claim 1, wherein the vaporizing base (6) is made of a material having a seal performance, and the vaporizing base (6) is provided on an outer wall with an annular ridge (63).

5. The electronic cigarette vaporizer according to claim 1, wherein the porous ceramic heating element (4) is designed as cuboid-shaped, and an outer sidewall of the porous ceramic heating element (4) is further enclosed by a sealing sleeve (5).

6. The electronic cigarette vaporizer according to claim 1, wherein an outer sidewall of the frame (313) of the vaporizing support (3) is provided with a curved-shaped air return groove (315), a bottom end of the air return groove (315) is in communication with a bottom portion of the first cavity (310), and an upper end of the air return groove (315) is in communication with an outer wall of the flat flange (312), whereby the air return groove (315) and the vaporizing base (6) enclose and define an air return channel.

7. The electronic cigarette vaporizer according to claim 1, wherein the porous ceramic heating element (4) comprises a porous ceramic body and a heating resistor disposed at a bottom portion of the porous ceramic body, the heating resistor is composed of a heating wire, or a heating sheet, or a heating film, and both ends of the heating resistor are arranged with electrode terminals.

8. The electronic cigarette vaporizer according to claim 1, wherein the housing (1) has an upper end provided with a mouthpiece (10) and a lower end provided with an opening (12), the mouthpiece (10) extends inward the housing (1) and is formed with a vapor outlet tube (11), the vaporizing device is fitted to be inserted into the housing (1) through the opening (12), an upper end of the tubular body (311) of the vaporizing support (3) is connected with the vapor outlet tube (11), and an outer wall of the vaporizing base (5) tightly abuts against an inner wall of the housing (1), a liquid storage chamber (100) for storing a vaporizing liquid is defined by a cavity space between the inner wall of the housing (1), the vapor outlet tube (11), and the vaporizing support (3), and the vaporizing liquid inside the liquid storage chamber (100) is allowed to flow to an upper surface of the porous ceramic heating element (4) through the liquid guiding channel (320).

9. The electronic cigarette vaporizer according to claim 8, wherein the upper end of the tubular body (311) of the vaporizing support (3) is connected with the vapor outlet tube (11) via a liquid separating base (2) having a seal performance.

10. The electronic cigarette vaporizer according to claim 8, wherein the vaporizing device further comprises a base (8), the base (8) is connected with a bottom portion of the vaporizing base (5) and is nested in the opening (12) of the housing (1), the base (8) is arranged with two electrode columns (7), top portions of the electrode columns (7) pass through the vaporizing base (5) and abut against two electrode terminals of the heating resistor located at the bottom portion of the porous ceramic heating element (4).

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