CN113455709A

CN113455709A - Atomizer of many tastes

Info

Publication number: CN113455709A
Application number: CN202110894448.2A
Authority: CN
Inventors: 刘团芳
Original assignee: Shenzhen Eigate Technology Co Ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2021-10-01

Abstract

The invention discloses a multi-flavor atomizer which comprises a shell, wherein an atomizing air passage and a plurality of oil storage cavities are formed in the shell, each oil storage cavity is provided with a heating component for heating tobacco tar in the corresponding oil storage cavity, and the smoke generated after the heating components heat the tobacco tar is converged in the atomizing air passage and flows out. According to the multi-flavor atomizer, the plurality of oil storage cavities are designed, tobacco tar with different flavors can be injected into each oil storage cavity, the tobacco tar in each oil storage cavity can enter each heating component respectively to heat and atomize the tobacco tar, and the purposes of multiple flavors of smoke, large amount of smoke, good taste and good user experience can be achieved.

Description

Atomizer of many tastes

Technical Field

The invention relates to the technical field of electronic cigarettes, in particular to a multi-flavor atomizer.

Background

At present, only be equipped with an oil storage chamber and a heating element that correspond in the conventional atomizer, the tobacco tar of a taste can only be injected into in the oil storage chamber and utilize a heating element that corresponds to the tobacco tar heating atomization, lead to the problem that the smog taste is few, smog volume is little, the taste is not good, user experience is poor.

Disclosure of Invention

The invention aims to provide a multi-flavor atomizer, which is used for solving the problems that in the prior art, tobacco tar with various flavors cannot be injected into the atomizer at the same time, and the smoke flavor is less, the smoke amount is small, the taste is poor and the user experience is poor in the smoking process.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an atomizer of many tastes, includes the casing, be formed with atomizing air flue and a plurality of oil storage chamber in the casing, each the oil storage chamber is furnished with the heating element who is used for heating corresponding oil storage intracavity tobacco tar, each the smog that produces behind the heating element heating tobacco tar is in atomizing air flue gathers and flows out.

In the multi-flavor atomizer, the heating assembly comprises an electric heating element and an oil guide member for transmitting the tobacco tar in the corresponding oil storage cavity to the electric heating element, and the oil guide member absorbs the tobacco tar in the corresponding oil storage cavity through the oil inlet.

In the multi-flavor atomizer, the shell is provided with a smoke suction port, the shell is internally provided with an air guide pipe for guiding air and discharging smoke, the air guide pipe is connected with the smoke suction port, the air guide pipe forms the atomizing air passage, and each oil storage cavity surrounds the periphery of the air guide pipe;

at least one partition part is connected between the outer wall of the air duct and the inner wall of the shell, and the oil storage cavities are mutually isolated through each partition part.

In the multi-flavor atomizer, a sealing plug used for sealing each oil storage cavity is arranged in a shell, an air passage is formed in the sealing plug in a hollow mode, the air guide pipe is communicated with the air passage, the oil storage cavities are located at the upper end of the sealing plug, an air guide base is arranged at the lower end of the sealing plug, the upper end of the air guide base is connected with the lower end of the sealing plug in a sealing mode, a heating cavity is formed after the air guide base and the sealing plug are combined, the heating component is arranged in the heating cavity, the heating cavity is communicated with the air passage, and the oil inlet hole is formed in the position, corresponding to the oil guide piece, of the sealing plug.

In the multi-flavor atomizer, an oil absorption piece for absorbing leaked oil is arranged in the heating cavity, and the oil absorption piece is positioned below the heating assembly.

In the multi-flavor atomizer, the sealing plug comprises a sealing main body and a convex extension body which are connected with each other, the air passage penetrates through the convex extension body, a heating cavity is formed in the sealing main body, the air passage penetrates into the heating cavity, the sealing main body expands in diameter relative to the convex extension body to form a step, one end of each partition part is abutted against the end of the convex extension body, and each oil inlet is formed in the wall of the step.

In the multi-flavor atomizer, the upper end of the air guide base is convexly provided with a support for supporting and installing the heating component, the heating component is arranged at the top end of the support, the heating component extends into the heating cavity along with the support, and the upper parts of the two ends of each oil guide piece are respectively provided with an oil inlet hole correspondingly.

In the multi-flavor atomizer, each heating component is provided with two brackets, the two brackets are oppositely arranged, each bracket is provided with a first groove, two ends of the oil guide piece are respectively arranged in the two corresponding first grooves, the oil absorption piece is laid below the heating component, and the oil absorption piece is provided with a through hole for air flow to enter.

In the multi-flavor atomizer of the present invention, a second groove corresponding to each of the heat generating components is formed on the top wall of the heating chamber in the sealed main body.

In the multi-flavor atomizer, the air guide base is inserted into one end of the shell, a concave part is formed in the peripheral wall of the air guide base in a concave manner, an air guide space is formed between the inner wall of the shell and the peripheral wall of the air guide base at the concave part, a first air vent hole and a second air guide hole are formed in the concave part, an air inlet channel is formed at the lower end of the air guide base and communicated with the first air vent hole, the first air vent hole is communicated with the second air guide hole through the air guide space, and the second air guide hole is communicated with the heating cavity;

the lower end of the air guide base is provided with a first electrode and a second electrode, and the electric heating element of each heating component is electrically connected with the first electrode and the second electrode respectively; the electric heating element is wound or coated on the periphery of the oil guide piece or arranged in the oil guide piece.

It should be noted that a great number of technical features are described in the specification of the present application, and are distributed in various technical solutions, so that the specification is excessively long if all possible combinations of the technical features (i.e., technical solutions) in the present application are listed. In order to avoid this problem, the respective technical features disclosed in the above summary of the invention of the present application, the respective technical features disclosed in the following embodiments and examples, and the respective technical features disclosed in the drawings may be freely combined with each other to constitute various new technical solutions (which are considered to have been described in the present specification) unless such a combination of the technical features is technically infeasible. For example, in one example, the feature a + B + C is disclosed, in another example, the feature a + B + D + E is disclosed, and the features C and D are equivalent technical means for the same purpose, and technically only one feature is used, but not simultaneously employed, and the feature E can be technically combined with the feature C, so that the solution of a + B + C + D should not be considered as being described because the technology is not feasible, and the solution of a + B + C + E should be considered as being described.

The multi-flavor atomizer has the following beneficial effects: according to the multi-flavor atomizer, the plurality of oil storage cavities are designed, tobacco tar with different flavors can be injected into each oil storage cavity, the tobacco tar in each oil storage cavity respectively enters each heating component to heat and atomize the tobacco tar, and the purposes of multiple flavors of smoke, large amount of smoke, good taste and good user experience can be achieved.

Drawings

The present invention will be described in detail below with reference to the accompanying drawings so that the above advantages of the present invention will be more apparent. Wherein the content of the first and second substances,

FIG. 1 is an exploded view of the multi-flavor nebulizer of the invention;

FIG. 2 is a perspective view of the multi-flavor atomizer of the present invention;

FIG. 3 is a schematic cross-sectional front view of the multi-flavor atomizer of the present invention;

FIG. 4 is a schematic side cross-sectional view of the multi-flavor atomizer of the present invention;

FIG. 5 is a schematic view of the inner wall of the oil storage bin body of the multi-flavor atomizer of the present invention;

FIG. 6 is a schematic top view of the sealing plug of the multi-flavor atomizer of the present invention;

FIG. 7 is a schematic bottom view of the sealing plug of the multi-flavor atomizer of the present invention;

FIG. 8 is a schematic view of an oil feed of the multi-flavor atomizer of the present invention;

fig. 9 is an air flow diagram of the multi-flavor atomizer of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.

The invention provides a multi-taste atomizer which comprises a shell 1, wherein an atomizing air passage 105 and a plurality of oil storage cavities 104 are formed in the shell 1, each oil storage cavity 104 is provided with a heating component for heating smoke oil in the corresponding oil storage cavity 104, and smoke generated after the smoke oil is heated by each heating component is converged and flows out of the atomizing air passage 105. Wherein, the number of the oil storage chamber 104 can be two, three or more, according to the requirement. It should be noted that, by designing the plurality of oil storage cavities 104, tobacco tar with different tastes can be injected into each oil storage cavity 104, and the tobacco tar in each oil storage cavity 104 can enter each heating component respectively to heat and atomize the tobacco tar, so that the purposes of more smoke tastes, large smoke amount, good taste and good user experience can be achieved.

The heating assembly comprises an electric heating element 3 and an oil guide 301 for transmitting the smoke oil in the corresponding oil storage cavity 104 to the electric heating element 3, and the oil guide 301 absorbs the smoke oil in the corresponding oil storage cavity 104 through the oil inlet 203. It should be noted that, after the smoke in the oil storage chamber 104 comes out from the oil inlet 203, the smoke can be directly absorbed by the oil guide 301. Wherein, the oil-guiding member 301 is made of cotton, porous fiber, ceramic, mica, and the cotton includes but is not limited to sanitary cotton, inert cotton, organic cotton, composite cotton, flax cotton, asbestos, fiber cotton, etc. The electrical heating elements are made of electrically conductive metal or carbon-containing electrically conductive materials including, but not limited to, carbon nanomembranes, carbon nanotubes, graphene, and the like. The heating assembly may have an electric heating wire wound around the periphery of the oil guide cotton, or the oil guide member may be cylindrical and sleeved around the periphery of the electric heating element, but not limited thereto.

The shell 1 is provided with a smoking port 101, the shell 1 is internally provided with an air duct 102 for guiding air and discharging smoke, the air duct 102 is connected with the smoking port 101, the air duct 102 forms an atomization air duct 105, and each oil storage cavity 104 surrounds the periphery of the air duct 102. Each oil storage chamber 104 is arranged around the periphery of the air duct 102, so that the smoke generated after the smoke in each oil storage chamber 104 is heated can be directly discharged from the air duct 102 through the shortest path. In other examples, the reservoir 104 may not be designed around the periphery of the airway tube 102.

At least one partition 103 is connected between the outer wall of the air duct 102 and the inner wall of the housing 1, and the plurality of oil chambers 104 are isolated from each other by each partition 103. The partition 103 may be a plate extending radially outward from the outer wall of the air duct 102, and the plate is connected between the outer wall of the air duct 102 and the inner wall of the housing 1. Or the connection body of the outer wall of the air duct 102, a part of which is linear along the axial direction, and the inner wall of the housing 1, a part of which is linear along the axial direction, forms the partition part. Wherein, be connected with at least a partition 103 between the outer wall of air duct 102 and the inner wall of casing 1, the preferred two partitions 103 of this embodiment, two partitions 103 divide oil storage chamber 104 into two and can inject two kinds of tobacco tar and atomize respectively, both convenient production can realize smog again and mix, and the taste after the smog of two kinds of tastes mixes is best, and user experience degree is the best.

A sealing plug 2 for sealing each oil chamber 104 is provided in the housing 1, i.e. the sealing plug 2 can seal all oil chambers 104. The interior of the sealing plug 2 is hollow to form an air passage 202, the air guide tube 102 is communicated with the air passage 202, the oil storage cavity 104 is positioned at the upper end of the sealing plug 2, the lower end of the sealing plug 2 is provided with an air guide base 5, the upper end of the air guide base 5 is hermetically connected with the lower end of the sealing plug 2, the air guide base 5 and the sealing plug 2 are combined to form a heating cavity 204, the heating component is arranged in the heating cavity 204, the heating cavity 204 is communicated with the air passage 202, and the oil inlet 203 is arranged at the position of the sealing plug 2 corresponding to the oil guide member 301. Wherein, the sealing plug is made of soft colloid, such as rubber, latex, silica gel, plastic cement, etc.

An oil absorption piece 4 for absorbing leaked oil is arranged in the heating cavity 204, and the oil absorption piece 4 is positioned below the heating component. It should be noted that when the oil guiding member 301 on the heating element in the heating cavity 204 absorbs too much oil, oil will drip, and the oil absorbing member 4 can absorb the dripping smoke oil. The oil absorbing member 4 may be made of cotton or porous fiber including, but not limited to, sanitary napkin, inert napkin, organic napkin, composite napkin, flax, asbestos, fiber cotton, etc. The oil absorbing piece 4 can be in any shape, such as a sheet shape, a column shape, a triangle shape and the like, preferably the sheet shape, and is paved in the air guide base to achieve the aim of preventing oil leakage in all directions.

The sealing plug 2 comprises a sealing body 206 and a convex extending body 201 which are connected with each other, wherein the sealing body 206 and the convex extending body 201 are integrally formed or connected in a welding mode, etc. The air channel 202 penetrates through the convex extension body 201, a heating cavity 204 is formed in the sealing main body 206, the air channel 202 penetrates into the heating cavity 204, the sealing main body 206 expands in diameter relative to the convex extension body 201 to form a step 207, one end of each partition 103 abuts against the end of the convex extension body 201, and each oil inlet 203 is formed in the wall of the step 207. The end of each partition 103 is abutted against the end of one end of the convex extension 201, so that a plurality of oil storage chambers 104 separated by sealing are realized, and the phenomenon of oil mixing is avoided. Wherein, the air duct 102 is inserted into the air duct 202 and fixed, or one end of the air duct 102 is sleeved on the periphery of the protruding body 201 and fixed relatively.

The upper end of the air guide base 5 is convexly provided with a support 501 for supporting and installing a heating component, the heating component is arranged at the top end of the support 501, and the heating component extends into the heating cavity 204 along with the support 501. The oil inlet holes 203 are respectively arranged above the two ends of each oil guide 301.

Each heating element is equipped with two supports 501, and two supports 501 set up relatively, and seted up first recess 502 on each support 501, lead in the both ends of oil piece 201 are arranged in corresponding every first recess 502 respectively, inhale oil piece 4 and lay in heating element's below, inhale and offer the through-hole 401 that is used for the air current to get into on oil piece 4. It should be noted that, the first groove 502 is used to fix and position the heat generating component, so that two ends of the oil guiding member 301 are opposite to the oil inlet 203.

A second recess 205 is formed in the top wall of the heating cavity 204 in the sealing body 206 corresponding to each heating element. It should be noted that the second grooves 205 are respectively aligned to each heating element, and the second grooves 205 are used to collect oil leakage when the atomizer is tilted down, so as to prevent the oil leakage from directly flowing out of the atomizer through the air duct 102 when the atomizer is tilted down.

The air guide base 5 is inserted into one end part of the shell 1, a concave part 504 is formed in the inner concave part of the outer peripheral wall of the air guide base 5, an air guide space 507 is formed between the inner wall of the shell 1 and the outer peripheral wall of the air guide base 5 at the position of the concave part 504, a first vent hole 503 and a second vent hole 505 are formed in the concave part 504, an air inlet channel 506 is formed at the lower end of the air guide base 5, the air inlet channel 506 is communicated with the first vent hole 503, the first vent hole 503 is communicated with the second vent hole 505 through the air guide space 507, and the second vent hole 505 is communicated with the heating cavity 204; it should be noted that the airflow can enter from the air intake channel 506, then enter into the air guiding space 507 through the first air guiding hole 503, then enter into the heating cavity 204 through the second air guiding hole 505, and drive the smoke generated by heating the tobacco tar by each electric heating element to be discharged from the heating cavity 204 into the air guiding pipe 102, and finally be sucked from the smoking port 101. Through the tortuous airflow circulation channel, the tobacco tar can be prevented from leaking outwards as much as possible.

The lower end of the air guide base 5 is provided with a first electrode 7 and a second electrode 8, and the electric heating element 3 of each heating component is respectively and electrically connected with the first electrode 7 and the second electrode 8; the electric heating element 3 is wound or coated on the periphery of the oil guide 301 or is embedded in the oil guide 301.

The preferred embodiment of two oil chambers is taken as an example, but the structure of more oil chambers is also within the scope of the present invention. As shown in fig. 1 to 7, the multi-flavor atomizer of the present embodiment includes a housing 1, a sealing plug 2, a heating element (i.e., an electric heating element 3 and an oil guiding member 301)3, an oil absorbing member 4, an air guiding base 5, an air guiding base sealing ring 6, a first electrode 7, and a second electrode 8. Wherein the top of the shell 1 is provided with a smoking port 101 for smoking, the shell 1 protrudes inwards from the smoking port 101 to form an air duct 102, the smoking port 101 is communicated with the air duct 102, two separating parts 103 are formed between two sides of the outer wall of the air duct 102 and the inner wall of the shell 1, and the separating parts 103 divide the interior of the shell 1 into two oil storage cavities 104 for storing oil. The sealing plug 2 is arranged in the shell 1 and used for sealing the two oil storage cavities 104, the interior of the sealing plug 2 is hollow to form an air passage 202 for air guiding, and the lower end of the air guiding pipe 102 is inserted into the air passage 202 and communicated with the air passage 202. The oil storage cavity 104 is located at the upper end of the sealing plug 2, the sealing plug 2 is formed by a sealing main body 206 and an extension body 201 which are integrally formed, the air channel 202 penetrates through the extension body 201, a heating cavity 204 is formed in the sealing main body 206, and the air channel 202 penetrates into the heating cavity 204. The sealing main body 206 expands relative to the convex extension body 201 to form a step 207, the bottoms of the two separating parts 103 are abutted against the top of the convex extension body 201 to seal and isolate the two oil storage cavities 104 from each other, the wall of the step 207 is provided with four corresponding oil inlet holes 203, a heating cavity 204 is formed in the sealing main body 206 and used for containing smoke generated by heating of a heating component for heating smoke, the heating cavity 204 is communicated with the air passage 202, the heating component is composed of an electric heating element 3 and an oil guide member 301, and the electric heating element 3 is wound on the outer peripheral wall of the oil guide member 301 and used for heating and absorbing the smoke in the oil guide member 301. An air guide base 5 is mounted in the bottom of the housing 1 for guiding air and positioning the sealing plug 2. Two groups of supports 501 are formed at two ends of the top of the air guide base 5, a first groove 502 is formed on each support 501, each group of supports 501 extends into the heating cavity 204, two ends of the oil guide member 301 of each heating component are installed and fixed in the first grooves 502 formed on the supports 501, two ends of the oil guide member 301 are opposite to the oil inlet hole 203 for facilitating oil inlet, two concave second grooves 205 for preventing oil leakage are formed on the top wall of the cavity corresponding to the heating cavity 204, each second groove 205 corresponds to each heating component 3 and the first groove 502 formed on the support 501, the two second grooves 205 are respectively opposite to each heating component 3, when the atomizer is prevented from being placed upside down, the second groove 205 is not used for collecting the smoke oil, so that the smoke oil directly flows out of the atomizer from the air guide tube 102, the air inlet channel 506 for air inlet is formed at the bottom of the air guide base 5, and the first electrode 7 and the second electrode 8 are isolated from each other and are arranged at the bottom of the air guide base 5 for being electrically connected with the electric heating element 3 of the heating component. The oil suction piece 4 is arranged between the top of the air guide base 5 and the heating cavity 204 and is used for absorbing leaked oil. Wherein the oil guide member 301 on the heating element in the heating chamber 204 can drip oil when excessive oil is absorbed, the oil absorption member 4 can absorb the dripping smoke oil to prevent the leaked smoke oil from directly flowing out of the atomizer to cause pollution without installing the oil absorption member 4, the outer peripheral wall of the air guide base 5 is concavely provided with a concave part 504, an air guide space 507 is formed between the inner wall of the housing 1 and the outer peripheral wall of the air guide base 5 at the concave part 504, the concave part 504 is internally provided with a first air vent 503 and a second air vent 505, the lower end of the air guide base 5 is provided with an air inlet channel 506, the air inlet channel 506 is communicated with the first air vent 503, the first air vent 503 is communicated with the second air vent 505 through an air guide space 507, the second air vent 505 is communicated with the heating chamber 204, an air guide base sealing ring 6 is installed between the outer peripheral wall of the air guide base 5 and the inner peripheral wall of the housing 1 to seal the air guide space 507, and air flow can enter from the air inlet channel 506, then enters the air guide space 507 through the first air guide hole 503, then enters the heating cavity 204 through the second air guide hole 505, and drives the smoke generated by heating the tobacco tar by each heating component 3 to be discharged from the heating cavity 204 into the air guide pipe 102, and finally is sucked from the smoking port 101.

Fig. 8 is an illustration of the oil feeding principle of the multi-flavor atomizer of the present invention, wherein the tobacco smoke in the two oil storage chambers 104 enters through the oil inlet 203 on the step 207 of the sealing plug 2, and then passes through the oil suction member 301 of the heating assembly to suck oil from both ends of the oil suction member to power the heating element 3, and the heating assembly is heated and atomized until the generated smoke is stored in the heating chamber 204.

Fig. 9 is a schematic illustration of the air flow direction of the multi-flavor atomizer of the present invention, during smoking, the air flow can enter from the air inlet channel 506 at the bottom of the air guide base 5, then enter into the air guide space 507 through the first air vent 503, then enter into the heating cavity 204 of the sealing plug 2 through the second air vent 505, and drive the smoke generated by the oil smoke on the oil guide 301 heated by the electric heating element 3 of each heating element to enter into the air passage 202 from the heating cavity 204, then be discharged into the air duct 102 from the air passage 202, and finally be smoked from the smoking port 101.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an atomizer of many tastes, its characterized in that, which comprises a housin, be formed with atomizing air flue and a plurality of oil storage chamber in the casing, each the oil storage chamber is furnished with the heating element who is used for heating corresponding oil storage intracavity tobacco tar, each the smog that produces behind the heating element heating tobacco tar is in atomizing air flue gathers and flows out.

2. The multi-flavor atomizer according to claim 1, wherein said heat generating assembly comprises an electric heating element and an oil guiding member for guiding the smoke oil in the corresponding oil storage chamber to said electric heating element, said oil guiding member absorbing the smoke oil in the corresponding oil storage chamber through an oil inlet.

3. The multi-flavor atomizer according to claim 2, wherein the housing has a smoke suction opening, an air duct for guiding air and discharging smoke is provided in the housing, the air duct is connected to the smoke suction opening, the air duct forms the atomizing air duct, and each of the oil storage chambers surrounds the air duct;

4. The multi-flavor atomizer according to claim 3, wherein a sealing plug for sealing each oil storage cavity is arranged in the housing, the sealing plug is hollow to form an air passage, the air guide tube is communicated with the air passage, the oil storage cavity is located at the upper end of the sealing plug, an air guide base is arranged at the lower end of the sealing plug, the upper end of the air guide base is connected with the lower end of the sealing plug in a sealing manner, a heating cavity is formed after the air guide base and the sealing plug are combined, the heating component is arranged in the heating cavity, the heating cavity is communicated with the air passage, and the oil inlet is formed in the position, corresponding to the oil guide piece, of the sealing plug.

5. The multi-flavor atomizer of claim 4, wherein an oil absorbing member is disposed within said heating chamber for absorbing leaked oil, said oil absorbing member being disposed below said heat generating assembly.

6. The multi-flavor atomizer according to claim 4, wherein the sealing plug comprises a sealing body and a protruding body connected to each other, the air passage extends through the protruding body, a heating cavity is formed in the sealing body, the air passage extends into the heating cavity, the sealing body expands in diameter relative to the protruding body to form a step, one end of each partition abuts against one end of the protruding body, and each oil inlet is formed in a wall of the step.

7. The multi-flavor atomizer according to claim 6, wherein a support for supporting and mounting the heating element is formed at the upper end of the air guide base in a protruding manner, the heating element is arranged at the top end of the support, the heating element extends into the heating cavity along with the support, and oil inlets are respectively and correspondingly formed above two ends of each oil guide member.

8. The multi-flavor atomizer according to claim 7, wherein each of the heat generating components has two brackets, the two brackets are disposed opposite to each other, each of the brackets has a first groove, two ends of the oil guiding member are disposed in the two corresponding first grooves, respectively, the oil absorbing member is disposed under the heat generating components, and the oil absorbing member has a through hole for air to enter.

9. A multi-flavor atomizer according to claim 6, wherein a second recess is formed in a top wall of said heating chamber within said sealed body corresponding to each of said heat generating components.

10. The multi-flavor atomizer according to claim 4, wherein the air guide base is inserted into one end of the housing, a concave portion is formed in the outer peripheral wall of the air guide base, an air guide space is formed between the inner wall of the housing and the outer peripheral wall of the air guide base at the concave portion, a first vent hole and a second vent hole are formed in the concave portion, an air inlet channel is formed at the lower end of the air guide base, the air inlet channel is communicated with the first vent hole, the first vent hole is communicated with the second vent hole through the air guide space, and the second vent hole is communicated with the heating chamber;