VAPORIZER AND VAPORIZATION DEVICE

CROSS-REFERENCE TO PRIOR APPLICATION

Priority is claimed to Chinese Patent Application No. 202222248110.2, filed on Aug. 25, 2022, the entire disclosure of which is hereby incorporated by reference herein.

FIELD

The present application relates to the field of vaporization, and in particular, to a vaporizer and a vaporization device.

BACKGROUND

In the related art, a vaporization device generates heat through a heating element, and a liquid medium is vaporized at a high temperature of the heating element. The vaporized aerosol flows through an airway in a vent tube through a central through hole of the heating element, and is finally outputted through a mouthpiece.

Usually, during inhalation, some aerosols in the vent tube are not completely inhaled out and form condensates. These condensates are adhered to an inner wall surface of the vent tube, and flow down and gather along the inner wall surface of the vent tube due to the gravity, according to the formation mechanism of condensate, small droplets are formed at an upper portion of the vent tube, and droplets with increasing diameters are formed as the condensates descend. Therefore, large droplets are formed downstream of the condensates and at a bottom of the vent tube with the minimum cross-sectional area. Since the inner diameter of the vent tube is constant, a funnel-shaped airway will be formed over time, followed by a conical airway, and finally a blockage region is formed at the bottom of the vent tube with the minimum cross-sectional area.

SUMMARY

In an embodiment, the present invention provides a vaporizer for vaporizing an aerosol-forming substrate, comprising: a vent tube comprising a first tube section and a second tube section in communication with the first tube section, the first tube section being adjacent to an air outlet of the vaporizer, wherein an inner wall surface of the second tube section forms an expanding channel, and wherein the expanding channel gradually expands away from the first tube section.

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 an external structure of a vaporizer according to some embodiments of the present application.

FIG. 2 is a longitudinal cross-sectional view of the vaporizer shown in FIG. 1.

FIG. 3 is a longitudinal cross-sectional view of the vaporizer shown in FIG. 2 after a mouthpiece assembly is disassembled.

FIG. 4 is a longitudinal cross-sectional view of the vaporizer of the present application after a vent tube, a housing, and a base are disassembled.

FIG. 5 is a schematic diagram of an external structure of the vent tube of the vaporizer according to some embodiments of the present application.

FIG. 6 is a longitudinal cross-sectional view of the vent tube shown in FIG. 5.

FIG. 7 is a longitudinal cross-sectional view of an external structure of a vaporizer according to some other embodiments of the present application.

FIG. 8 is a schematic diagram of an external structure of a vent tube of the vaporizer according to some other embodiments of the present application.

FIG. 9 is a longitudinal cross-sectional view of the vent tube shown in FIG. 8.

DETAILED DESCRIPTION

In an embodiment, the present invention provides a vaporizer and a vaporization device.

In an embodiment, the present invention provides a vaporizer for vaporizing an aerosol-forming substrate. The vaporizer includes a vent tube.

The vent tube includes a first tube section and a second tube section in communication with the first tube section, the first tube section is adjacent to an air outlet of the vaporizer, an inner wall surface of the second tube section forms an expanding channel, and the expanding channel gradually expands away from the first tube section.

Preferably, the inner wall surface of the second tube section is a streamline arcuate surface.

Preferably, the arcuate surface is uniformly transitioned.

Preferably, the vent tube further includes a third tube section connected to an end of the second tube section away from the first tube section, and the third tube section is in communication with the second tube section.

Preferably, a smooth transition is realized between the first tube section and the second tube section and/or between the second tube section and the third tube section.

Preferably, the first tube section, the second tube section, and the third tube section are connected as one piece.

Preferably, the first tube section, the second tube section, and the third tube section are coaxial with each other.

Preferably, the inner diameter of the second tube section is greater than the inner diameter of the first tube section, and the inner diameter of the first tube section is less than or equal to the minimum inner diameter of the second tube section.

Preferably, the inner diameter of the third tube section is greater than or equal to the maximum inner diameter of the second tube section.

Preferably, the minimum inner diameter of the second tube section is in a range of 2.5-3.5 mm.

Preferably, the maximum inner diameter of the second tube section is in a range of 4-6 mm.

Preferably, the height of the second tube section is in a range of 5-25 mm.

Preferably, the wall thickness of the vent tube is uniform.

Preferably, a vaporization assembly arranged in the third tube section.

Preferably, the vaporization assembly includes a cylindrical heating element, an outer surface of the heating element is attached to an inner wall surface of the third tube section, and a central through hole of the heating element is in communication with the second tube section.

Preferably, the vaporization assembly includes a heating element and a liquid guide member.

The liquid guide member is cylindrical, and an outer surface of the liquid guide member is attached to an inner wall surface of the third tube section.

The heating element is cylindrical, an outer surface of the heating element is attached to an inner wall surface of the liquid guide member, and a central through hole of the heating element is in communication with the second tube section.

Preferably, the vaporizer further includes a housing, the vent tube is arranged in the housing, and a liquid storage cavity is formed between an outer wall surface of the vent tube and an inner wall surface of the housing.

Preferably, a capacity of the liquid storage cavity is in a range of 0.5-1.5 ml.

Preferably, a mouthpiece assembly hermetically blocking an upper opening of the liquid storage cavity, where the mouthpiece assembly includes an air outlet channel, an upper end of the first tube section is embedded in the mouthpiece assembly and in communication with the air outlet channel, and the air outlet is arranged on the air outlet channel.

The present application further constructs a vaporization device, including the above vaporizer.

Implementing the present application brings at the following beneficial effects: By arranging the expanding channel in the vent tube, even a large droplet is formed during flowing of a condensate downward along an inner wall of the vent tube, the airway is not blocked, which effectively resolves the problem of blockage caused by condensate accumulation in the vent tube.

In the figures: Vaporizer 100; Large droplet 200; Base 1; Housing 2; Vent tube 3; Vaporization assembly 4; Mouthpiece assembly 5; Body portion 11; Engagement portion 12; Electrode pole 13; Insulating sleeve 14; Through hole 131; Liquid storage cavity 21; Neck portion 22; Seal cylinder 23; First tube section 31; Second tube section 32; Third tube section 33; Seal ring 34; Seal sleeve 35; Fitting tube section 311; Connecting tube section 312; First boss 313; Limiting portion 314; Expanding channel 321; Liquid inlet hole 331; Second boss 332; Electrode lead 41; Heating element 42; Liquid guide member 43; Mouthpiece 51; Connecting member 52; Air outlet channel 53; Seal member 54; First seal portion 541; Second seal portion 542; Liquid blocking portion 543;

Another vaporizer 100a; Another housing 2a; Another vent tube 3a; Vaporization assembly 4a; Another liquid storage cavity 21a; Another first tube section 31a; Another second tube section 32a; Another third tube section 33a; Another seal sleeve 35a; Another fitting tube section 311a; Another connecting tube section 312a; Another first boss 313a; Another limiting portion 314a; Another expanding channel 321a; Another liquid inlet hole 331a; Another second boss 332a; Another heating element 42a; Another liquid guide member 43a.

For a clearer understanding of the technical features, objectives, and effects of the present application, specific implementations of the present application are described in detail with reference to the drawings. In the following description, it should be understood that orientation or position relationships indicated by “front”, “back”, “up”, “down”, “left”, “right”, “longitudinal”, “transverse”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “head”, “tail”, and the like are constructed and operated in specific directions based on the orientation or position relationships shown in the drawings, and are used only for ease of describing the technical solutions, rather than indicating that the devices or elements need to have a specific orientation. Therefore, the terms should not be construed as a limitation on the present application.

It should be further noted that, unless otherwise explicitly specified or defined, the terms such as “mount”, “connect”, “connection”, “fix”, and “arrange” should be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; or may be a mechanical connection or an electrical connection; or may be a direct connection, an indirect connection through an intermediate medium, internal communication between two elements, or an interaction relationship between two elements. When an element is referred to as being “above” or “below” another element, the element may be “directly” or “indirectly” located above the another element, or one or more intermediate elements may exist. The terms such as “first”, “second”, and “third” are merely used for describing the technical solutions, and should not be understood as indicating or implying relative importance or implying a number of indicated technical features. Therefore, features defined by “first” and “second” may explicitly or implicitly include one or more such features. A person of ordinary skill in the art can understand specific meanings of the terms in the present application according to specific situations.

FIG. 1 shows a vaporization device according to some embodiments of the present application. The vaporization device may be configured to heat and vaporize a liquid substrate to generate aerosols. The aerosols are edible or inhalable by a user. The liquid substrate may include tobacco oil, medicinal liquid, or the like.

As shown in FIG. 1, in some embodiments, the vaporization device is substantially in the shape of a round column, which may include a vaporizer 100 in the shape of a round column and a power supply device in the shape of a round column axially and detachably connected to the vaporizer 100. The vaporizer 100 is configured to receive a liquid substrate, heat and vaporize the liquid substrate, and transport aerosols. The power supply device is configured to supply electrical energy to the vaporizer 100 and control opening or closing of the whole vaporization device. It may be understood that the shape of the vaporization device is not limited to the shape of a round column. In other embodiments, the vaporization device may be in other shapes such as the shape of an elliptical column, the shape of a flat column, or the shape of a square column.

As shown in FIG. 1 and FIG. 2, in some embodiments, the vaporizer 100 may include a base 1 configured to be detachably connected to the power supply device, a housing 2 longitudinally mounted to an upper end of the base 1, a vent tube 3 longitudinally mounted in the housing 2, a vaporization assembly 4 longitudinally mounted in the vent tube 3, and a mouthpiece assembly 5 longitudinally mounted to an upper end of the housing 2. Preferably, the base 1, the housing 2, the vent tube 3, the vaporization assembly 4, and the mouthpiece assembly 5 are coaxially assembled together.

The base 1 can provide conductivity and may be made of metal materials, such as stainless steel, preferably, medical grade stainless steel without heavy metals. As shown in FIG. 4, in some embodiments, the base 1 may include a cylindrical body portion 11 and a cylindrical engagement portion 12 longitudinally integrally engaged with a lower part of the body portion 11. The outer diameter of the body portion 11 may be equivalent to the outer diameter of the housing 2, or may be slightly greater than the outer diameter of the engagement portion 12. External threads may be formed on an outer wall surface of the engagement portion 12 for screw connection to the power supply device.

In some embodiments, the vaporizer 100 may further include an electrode pole 13 longitudinally and insulatively arranged in the base 1. The electrode pole 13 and the base 1 may be electrically connected to a negative electrode and a positive electrode (or a positive electrode and a negative electrode) of the power supply device respectively.

In some embodiments, the electrode pole 13 may be cylindrical, has an opening structure at a bottom, and is provided with at least one through hole 131 on a peripheral wall adjacent to a top wall thereof for communication with the vent tube 3. The electrode pole 13 may be longitudinally and insulatively arranged in the engagement portion 12. Preferably, an insulating sleeve 14 is further arranged between an outer periphery of the electrode pole 13 and an inner periphery of the engagement portion 12 for insulation.

Referring to FIG. 2 and FIG. 4, in some embodiments, the housing 2 may be in the shape of a round column, and has an inner wall surface forming a chamber configured for fitting with an outer wall surface of the vent tube 3 to define a liquid storage cavity 21.

A lower inner ring of the housing 2 extends radially inward to form a neck portion 22. The housing 2 is hermetically pressed against a top of the body portion 11 through the neck portion 22. Usually, a seal cylinder 23 may be mounted between a bottom of the neck portion 22 and the top of the body portion 11 to improve the sealing, thereby preventing liquid leakage. In some embodiments, the seal cylinder 23 may be made of a flexible material, such as silicone, which helps improve the sealing effect.

In some embodiments, the vent tube 3 may longitudinally extend through the housing 2, and the liquid storage cavity 21 is defined between the outer wall surface of the vent tube 3 and an inner wall surface of the housing 2. In some embodiments, a capacity of the liquid storage cavity 21 is 0.5 ml. The vaporization assembly 4 is arranged in the vent tube 3 and is in communication with the liquid storage cavity 21 for liquid guide. At least one liquid inlet hole 331 that communicates the vaporization assembly 4 with the liquid storage cavity 21 for liquid guide may be formed on a side wall of the vent tube 3. Preferably, the vent tube 3 may be made of a metal material, such as stainless steel, preferably, medical stainless steel. The vent tube 3 may alternatively be made of a ceramic material.

Two electrode leads 41 of the vaporization assembly 4 are electrically connected to the base 1 and the electrode pole 13 respectively. A certain gap is formed between a bottom wall of the vaporization assembly 4 and a top wall of electrode pole 13 to prevent direct heat conduction as a result of contact.

In some embodiments, the vaporization assembly 4 is arranged in a third tube section 33 of the vent tube 3, which includes a heating element 42 and a liquid guide member 43 coaxially sleeved on an outer periphery of the heating element 42.

In some embodiments, the heating element 42 is cylindrical, and is defined with the outer diameter matching the inner diameter of the liquid guide member 43, so that an outer wall surface of the heating element 42 is attached to an inner wall surface of the liquid guide member 43. A central through hole of the heating element 42 is in communication with the electrode pole 13 and an air outlet channel 53 of the mouthpiece assembly 5.

Preferably, the heating element 42 includes a porous substrate and a heating portion attached to the porous substrate. The porous substrate is used as a carrier for the heating portion. In some embodiments, the porous substrate is cylindrical, and has an outer peripheral surface (a surface facing away from the heating portion) attached to the inner wall surface of the liquid guide member 43 to provide liquid guide and liquid storage. The heating portion is attached to an inner peripheral surface of the porous substrate and electrically connected to the two electrode leads 41. Optionally, the heating portion may include a heating wire or a heating film, and the porous substrate may include porous ceramics.

In some embodiments, the liquid guide member 43 is cylindrical, and is defined with the inner diameter matching the outer diameter of the heating element 42. The inner wall surface of the liquid guide member 43 is attached to an outer peripheral surface of the heating element 42 to wrap the heating element 42, thereby providing fastening. The outer diameter of the liquid guide member 43 may match the inner diameter of the third tube section 33 in the vent tube 3, so that an outer wall surface of the liquid guide member 43 is attached to an inner wall surface of the third tube section 33 and opposite to the liquid inlet hole 331 of the vent tube 3, thereby providing liquid guide. Preferably, the liquid guide member 43 may be made of cotton.

It should be noted that, the liquid guide member 43 is not an essential component in the vaporizer 100, and the liquid guide member 43 applied as a preferred solution in this embodiment. In some other embodiments where no liquid guide member 43 is arranged, the outer peripheral surface of the heating element 42 is attached to the inner wall surface of the third tube section 33.

Referring to FIG. 4 to FIG. 6, in some embodiments, the vent tube 3 may include a first tube section 31, a second tube section 32, and the third tube section 33 connected in sequence. The first tube section 31, the second tube section 32, and the third tube section 33 are coaxially and longitudinally arranged from top to bottom, and are in communication with each other. Preferably, the first tube section 31, the second tube section 32, and the third tube section 33 are connected smoothly.

The third tube section 33 is adjacent to the base 1, and in some embodiments, may be cylindrical, and is defined with the inner diameter and the outer diameter respectively greater than the inner diameter and the outer diameter of the first tube section 31. The vaporization assembly 4 is coaxially arranged in the third tube section 33, and has a central through hole in communication with the third tube section 33. At least two (four in this embodiment) liquid inlet holes 331 are evenly spaced apart on a side wall of the third tube section 33 in a circumferential direction, and the liquid substrate may flow to the vaporization assembly 4 through these liquid inlet holes 331. The vaporization assembly 4 may be defined with the outer diameter matching the inner diameter of the third tube section 33, so as to be snugly embedded in the third tube section 33.

A lower end of the third tube section 33 extends out from the housing 2 and is embedded in the body portion 11 of the base 1, thereby realizing fixing among the base 1, the housing 2, and the vent tube 3. The third tube section 33 may be defined with the outer diameter matching the inner diameter of the body portion 11, to pass through the neck portion 22 of the housing 2 and be snugly embedded in the body portion 11. An annular second boss 332 is arranged on an outer periphery of the third tube section 33. The second boss 332 may be integrally formed on the outer periphery of the third tube section 33 through stretching, and may have a bottom pressed against a top of the neck portion 22 facing the liquid storage cavity 21 to snugly hold the neck portion 22 between the second boss 332 and the body portion 11. In some embodiments, an O-shaped seal ring 34 may be further arranged between the bottom of the second boss 332 and the top of the neck portion 22 to improve the sealing, thereby preventing liquid leakage. In some embodiments, the seal ring 34 may be made of a flexible material, such as silicone, which helps improve the sealing effect.

In some embodiments, the first tube section 31 may include a fitting tube section 311 and a connecting tube section 312 integrally engaged below the fitting tube section 311. The fitting tube section 311 and the connecting tube section 312 are in the shape of a round column and have varying sizes. The outer diameter and the inner diameter of the fitting tube section 311 are respectively greater than the outer diameter and the inner diameter of the connecting tube section 312, and the outer diameter of the fitting tube section matches the inner diameter of a connecting member 52 in the mouthpiece assembly 5. Moreover, external threads are formed on an outer wall surface of the fitting tube section 311 for fitting with the connecting member 52.

The outer diameter of the connecting tube section 312 is less than the inner diameter of the connecting member 52 in the mouthpiece assembly 5, so that a gap is formed between an outer wall surface of the connecting tube section 312 and an inner wall surface of the connecting member 52. An annular first boss 313 is arranged on a lower portion of the connecting tube section 312 away from the fitting tube section 311. The first boss 313 may be integrally formed on an outer periphery of the connecting tube section 312 through stretching. The first boss 313 and a stepped surface between the connecting tube section 312 and the fitting tube section 311 form a limiting portion 314. Preferably, a seal sleeve 35 may be arranged on the limiting portion 314, which is sleeved on the outer periphery of the connecting tube section 312. The seal sleeve 35 may be defined with the maximum outer diameter slightly greater than the inner diameter of the connecting portion 52, to block the gap between the inner wall surface of the connecting portion 52 and the outer wall surface of the connecting tube section 312, thereby improving the sealing. In some embodiments, the seal sleeve 35 may be made of a flexible material, such as silicone, which helps improve the sealing effect.

The second tube section 32 is located between the first tube section 31 and the third tube section 33. The aerosol generated at the vaporization assembly 4 flows through the second tube section 32 to the first tube section 31, and finally flows out through the air outlet channel 53 of the mouthpiece assembly 5. In some embodiments, the inner wall surface of the second tube section 32 is a streamline arcuate surface, which forms an expanding channel 321. The expanding channel 321 gradually expands downward from a bottom of the first tube section 31 and extends to a top of the third tube section 33.

It may be understood that, usually, during inhalation, some aerosols in the vent tube 3 are not completely inhaled out and form condensates. These condensates are adhered to the inner wall surface of the vent tube 3 (the inner wall surfaces of the first tube section 31 and the second tube section 32), and flow down and gather along the inner wall surface of the vent tube 3 due to the gravity, which form large droplets 200 downstream of the condensates and at a bottom of the vent tube 3 with the minimum cross-sectional area. When sufficient droplets gather at the bottom, a blockage region will be formed in the vent tube 3. However, in this embodiment, referring to FIG. 6, by arranging the second tube section 32 as the expanding channel 321 that expands downward, the accumulation of the large droplets 200 at the bottom of the second tube section 32 will not completely block the airway, and the flowing droplets can flow back to the vaporization assembly 4 and be reheated by the vaporization assembly 4.

In some embodiments, the minimum inner diameter of the second tube section 32 is in a range of 2.5-3.5 mm.

In some embodiments, the maximum inner diameter of the second tube section 32 is in a range of 4-6 mm.

In some embodiments, the height of the second tube section 32 is in a range of 5-25 mm.

Optionally, the maximum inner diameter of the second tube section 32 may be less than or equal to the inner diameter of a top end of the third tube section 33, and the minimum inner diameter of the second tube section 32 may be less than or equal to the inner diameter of a bottom end of the first tube section 31. A slope of the inner wall surface of the second tube section 32 may be adjusted according to a distance between the first tube section 31 and the third tube section 33.

Referring to FIG. 3, the mouthpiece assembly 5 may detachably and hermetically block the upper opening of the liquid storage cavity 21. After the mouthpiece assembly 5 is removed, a liquid substrate may be added/replenished to the liquid storage cavity 21. In some embodiments, the mouthpiece assembly 5 may include a flat mouthpiece 51, the connecting member 52 longitudinally embedded in the mouthpiece 51, and the air outlet channel 53 longitudinally extending through the mouthpiece 51 and the connecting member 52. Internal threads are formed on an inner wall surface of connecting member 52, which may be sleeved (threaded) at an upper end of the first tube section 31. In this case, the air outlet channel 53 is communicated with the upper end of the first tube section 31, and a top of the air outlet channel is used as the air outlet of the vaporizer 100.

In some embodiments, the connecting member 52 may be cylindrical, and the connecting member 52 is made of a metal material, such as stainless steel, preferably, medical grade stainless steel without heavy metals. The connecting member 52 can strengthen the connection between the mouthpiece 51 and the vent tube 3, thereby preventing a decrease of the reliability of the connection as a result of deformation of the plastic mouthpiece 51. The connecting member 52 may be in interference fit with the mouthpiece 51 to be snugly embedded in the mouthpiece 51. Alternatively, the connecting member 52 may be integrally formed with the mouthpiece 51 through injection molding.

In some embodiments, the vaporizer 100 may further include a seal member 54. The seal member 54 is arranged between an outer wall surface of the connecting member 52 and inner wall surfaces of the mouthpiece 51 and the housing 2, to provide sealing. Preferably, the seal member 54 is made of a flexible material, such as silicone, which helps improve the sealing effect.

In some embodiments, the seal member 54 may include a first seal portion 541 arranged between the outer wall surface of the connecting member 52 and the inner wall surface of the mouthpiece 51, a second seal portion 542 arranged between a bottom wall of the mouthpiece 51 and a top wall of the housing 2, and a liquid blocking portion 543 extending from an outer wall surface of the first seal portion 541 facing the liquid storage cavity 21 toward the inner wall surface of the housing 2. A guide portion is arranged around a side of the liquid blocking portion 543 facing the liquid storage cavity 21. The guide portion may transition with a chamfer, a curved surface, or a fillet. Preferably, a small end of the guide portion faces downward, that is, an end with a smaller outer diameter faces the liquid storage cavity 21, and a large end of the guide portion faces upward, that is, an end with a larger outer diameter faces away from the liquid storage cavity 21. The liquid blocking portion 543 is snugly fitted to the inner wall surface of the housing 2, which can block as much liquid substrates as possible into the liquid storage cavity 21, thereby avoiding liquid leakage as a result of the liquid substrates adhering to the second seal portion 542.

A dimensional relationship between the liquid storage cavity 21, the second tube section 32, and the vaporization assembly 4 of the vaporizer 100 in some preferred embodiments is shown below:

In Embodiment 1, a capacity of the liquid storage cavity 21 is 0.5 ml. A top inner diameter of the second tube section 32 is 2.76 mm, a bottom inner diameter of the second tube section 32 is 4.8 mm, and the height (an axial length) of the second tube section 32 is 9 mm. Adapted to the second tube section 32, the outer diameter of the heating element 42 is 3.8 mm, and the thickness of the liquid guide member 43 is 0.5 mm.

In Embodiment 2, a capacity of the liquid storage cavity 21 is 0.5 ml. A top inner diameter of the second tube section 32 is 2.76 mm, a bottom inner diameter of the second tube section 32 is 5.6 mmm, and the height (an axial length) of the second tube section 32 is 9 mm. Adapted to the second tube section 32, the outer diameter of the heating element 42 is 4.6 mmm, and the thickness of the liquid guide member 43 is 0.5 mm.

FIG. 7 shows another vaporizer 100a according to some other embodiments of the present application. Different from the vaporizer 100, another housing 2a, another vent tube 3a, and another vaporization assembly 4a are used to replace the housing 2, the vent tube 3, and the vaporization assembly 4 of the vaporizer 100. In this embodiment, the lengths of the another housing 2a and the another vent tube 3a are respectively greater than those of the housing 2 and the vent tube 3 in the above vaporizer 100. For specific structures of the base 1 and the mouthpiece assembly 5 as well as the connection therebetween, refer to the above vaporizer 100, and the dimensions may be adjusted properly. The details are not described herein.

Referring to FIG. 7, in this embodiment, the another housing 2a is cylindrical, and has an inner wall surface forming a chamber. The another vent tube 3a longitudinally extends through the another housing 2a, and another liquid storage cavity 21a is defined between an outer wall surface of the another vent tube 3a and an inner wall surface of the another housing 2a. In this embodiment, a capacity of the another liquid storage cavity 21a is 1 ml.

In this embodiment, the another vaporization assembly 4a is arranged in another third tube section 33a of the another vent tube 3a, which includes another heating element 42a and another liquid guide member 43a coaxially sleeved on an outer periphery of the another heating element 42a.

The another heating element 42a may be cylindrical, and is defined with the outer diameter matching the inner diameter of the another liquid guide member 43a, so that an outer wall surface of the another heating element 42a is attached to an inner wall surface of the another liquid guide member 43a. A central through hole of the another heating element 42a is in communication with the electrode pole 13 and an air outlet channel 53 of the mouthpiece assembly 5.

The another liquid guide member 43a may be cylindrical, and is defined with the inner diameter matching the outer diameter of the another heating element 42a. The inner wall surface of the another liquid guide member 43a is attached to an outer peripheral surface of the another heating element 42a to wrap the another heating element 42a. The outer diameter of the another liquid guide member 43a may match the inner diameter of the another third tube section 33a, so that an outer wall surface of the another liquid guide member 43a is attached to an inner wall surface of the another third tube section 33a and opposite to a plurality of other liquid inlet holes 331 of the another vent tube 3a. Preferably, the another liquid guide member 43a may be made of cotton.

Referring to FIG. 7 to FIG. 9, the another vent tube 3 may include another first tube section 31a, another second tube section 32a, and the another third tube section 33a connected in sequence. The another first tube section 31a, the another second tube section 32a, and the another third tube section 33a are coaxially and longitudinally arranged from top to bottom, and are in communication with each other. Preferably, the another first tube section 31a, the another second tube section 32a, and the another third tube section 33a are connected smoothly.

The another third tube section 33a may be in the shape of a round column, and has the inner diameter and the outer diameter respectively greater than the inner diameter and the outer diameter of the another first tube section 31a. The another vaporization assembly 4a is coaxially arranged in the another third tube section 33a, and the another vaporization assembly 4a has a central through hole in communication with the another third tube section 33a. The plurality of other liquid inlet holes 331a evenly spaced apart on a side wall of the another third tube section 33a in a circumferential direction. The another vaporization assembly 4a may be defined with the outer diameter matching the inner diameter of the another third tube section 33a, so as to be snugly embedded in the another third tube section 33a. In this embodiment, another annular second boss 332a is arranged on an outer periphery of the another third tube section 33a, which is configured to be fitted to a bottom of the another housing 2a.

The another first tube section 31a includes another fitting tube section 311a and another connecting tube section 312a integrally engaged below the another fitting tube section 311a. The another fitting tube section 311a and the another connecting tube section 312a are in the shape of a round column and have varying sizes. The outer diameter and the inner diameter of the another fitting tube section 311a are respectively greater than the outer diameter and the inner diameter of the another connecting tube section 312a, and the outer diameter of the another fitting tube section matches the inner diameter of a connecting member 52 in the mouthpiece assembly 5. Moreover, external threads are formed on an outer wall surface of the another fitting tube section 311a.

The outer diameter of the another connecting tube section 312a is less than the inner diameter of the connecting member 52 in the mouthpiece assembly 5, so that a gap is formed between an outer wall surface of the another connecting tube section 312a and an inner wall surface of the connecting member 52. Another annular first boss 313a is arranged on a lower portion of the another connecting tube section 312a away from the another fitting tube section 311a. The another first boss 313a may be integrally formed on an outer periphery of the another connecting tube section 312a through stretching. The another first boss 313a and a stepped surface between the another connecting tube section 312a and the another fitting tube section 311a form another limiting portion 314a. Preferably, another seal sleeve 35a may be arranged on the another limiting portion 314a, to block the gap between the inner wall surface of the connecting portion 52 and the outer wall surface of the another connecting tube section 312a.

The inner wall surface of the another second tube section 32a is a streamline arcuate surface, which forms another expanding channel 321a. The another expanding channel 321a gradually expands downward from a bottom of the another first tube section 31a and extends to a top of the another third tube section 33a.

Compared to the above vaporizer 100, in this embodiment, a distance between the another first tube section 31a and the another third tube section 33a is greater than the distance between the first tube section 31 and the third tube section 33 in the above embodiment, that is, the height of the another second tube section 32a is greater than the height of the above second tube section 32. The minimum inner diameter of the another second tube section 32a is the same as the minimum inner diameter of the above second tube section 32, and the maximum inner diameter thereof is the same as the maximum inner diameter of the above second tube section 32. A slope of the inner wall surface of the another expanding channel 321a is less than the slope of the inner wall surface of the above expanding channel 321.

A dimensional relationship between the another liquid storage cavity 21a, the another second tube section 32a, and the another vaporization assembly 4 of the another vaporizer 100a in some other preferred embodiments is shown below:

In Embodiment 3, a capacity of the another liquid storage cavity 21a is 1 ml. The top inner diameter of the another second tube section 32a is 2.76 mm, a bottom inner diameter of the another second tube section 32a is 4.8 mm, and the height (an axial length) of the another second tube section 32 is 19 mm. Adapted to the another second tube section 32a, the outer diameter of the another heating element 42a is 3.8 mm, and the thickness of the another liquid guide member 43a is 0.5 mm.

In Embodiment 4, a capacity of the another liquid storage cavity 21a is 1 ml. The top inner diameter of the another second tube section 32a is 2.76 mm, a bottom inner diameter of the another second tube section 32a is 5.6 mmm, and the height (an axial length) of the another second tube section 32 is 19 mm. Adapted to the another second tube section 32a, the outer diameter of the another heating element 42a is 4.6 mmm, and the thickness of the another liquid guide member 43a is 0.5 mm.

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.

VAPORIZER AND VAPORIZATION DEVICE

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