CN210809292U - Electronic cigarette - Google Patents

Abstract

The utility model discloses an electronic cigarette, which relates to the technical field of electronic cigarettes, and comprises a shell, an oil bin, a heating wire, an air passage and a loop channel, wherein the oil bin, the heating wire, the air passage and the loop channel are arranged in the shell, the shell is provided with an air inlet and an air outlet, the heating wire is horizontally arranged in the oil bin and used for atomizing oil in the oil bin, the air passage is arranged in the oil bin, the air passage comprises a first port and a second port, the first port is communicated with the air inlet, the second port is positioned above the heating wire and corresponds to the middle position of the heating wire, and external air is flushed into the heating wire through the air inlet and the first port and the second port of the air passage; the circuit channel is arranged in the oil bin and comprises a third port and a fourth port, the heating wire is located between the third port and the second port, the fourth port is communicated with the air outlet, and gas atomized by the heating wire is discharged from the air outlet through the third port and the fourth port of the circuit channel. So set up, abundant atomizing oil, smog is more strong, avoids the taste variation, promotes the taste degree of restitution.

Description

Electronic cigarette

Technical Field

The utility model relates to an electron cigarette technical field, more specifically say, relate to an electron cigarette.

Background

The electronic cigarette is an electronic device which atomizes the tobacco tar in an electric heating manner so as to provide the user with the tobacco tar, and generally comprises a shell, a battery arranged in the shell, a tobacco tar cavity, an atomizer or a heating wire for atomizing the tobacco tar, and the like.

As shown in fig. 1, in the existing electronic cigarette, an air inlet 101 is disposed at a side portion of a housing 1, an atomizer or a heating wire 102 is disposed in the housing, an air passage 103 is disposed between the air inlet 101 and the heating wire 102, an air outlet 104 is disposed at a top portion of the housing, and the air outlet 104 is located right above the heating wire 102. The external gas enters from the air inlet hole 101, contacts the side of the electric heating wire 102 through the air passage 103, so that the oil is atomized, the atomized gas flows out from the upper part of the electric heating wire 102 and is finally discharged from the air outlet hole 104, the external gas enters from the side of the shell 1 in the whole process, and the air is discharged from the middle of the shell 1. And the heater 102 of atomizing function is the heliciform itself, according to the relevant knowledge that heat-conduction and heat gived off, the temperature of the both sides of heater 102 is obviously lower than the temperature of heater intermediate position, the difference in temperature of whole heater 102 is big, and the outside air that gets into from inlet port 101 can meet the lateral part that triggers the heater, the minimum temperature that the heater was compared to the outside gas is also obviously low a lot, still contact with the lateral part of heater, can make oil atomization insufficient like this, the smog of production is also not enough strong, the taste reduction degree of gas from the venthole combustion gas is also not good enough at last.

Therefore, how to solve the problems of insufficient atomization of the electronic cigarette, insufficient rich smoke and poor mouthfeel reduction degree in the prior art becomes an important technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electron cigarette is insufficient in order to solve the atomizing that electron cigarette exists among the prior art, smog is not strong enough, the poor technical problem of taste reduction degree. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

The utility model provides an electronic cigarette, include:

the air inlet and the air outlet are arranged on the shell;

the oil bin is arranged in the shell;

the heating wire is horizontally arranged in the oil bin and is used for atomizing oil in the oil bin;

the air passage is arranged in the oil bin and comprises a first port and a second port which are communicated, the first port is communicated with the air inlet hole, the second port corresponds to the middle position of the heating wire, and external air sequentially passes through the air inlet hole, the first port and the second port of the air passage and is flushed into the heating wire for atomization;

the circuit channel is arranged in the oil bin and comprises a third port and a fourth port which are communicated, the heating wire is located between the third port and the second port, the fourth port is communicated with the air outlet hole, and gas atomized by the heating wire sequentially passes through the third port and the fourth port of the circuit channel and is discharged from the air outlet hole.

Preferably, the air passage is of a tubular structure and is vertically arranged in the oil bin, the lower port of the tubular structure is the second port, the upper port of the tubular structure corresponds to the air outlet, a sealing piece for sealing an opening of the oil bin is arranged at the upper end of the oil bin, an annular bulge is arranged on the sealing piece, the upper end of the tubular structure is nested in the annular bulge, a through hole is arranged on the side wall of the annular bulge, and the first port is arranged at a position, corresponding to the through hole, of the tubular structure; the shell is also internally provided with a plugging piece for plugging the upper port of the tubular structure, and the plugging piece is in contact with the inner wall of the shell to prevent external gas entering from the gas inlet hole from diffusing to the gas outlet hole.

Preferably, the air inlet holes, the through holes and the first ports are arranged in two and symmetrically arranged on the shell, the annular protrusion and two sides of the tubular structure respectively, and the air inlet holes, the through holes and the first ports correspond to each other.

Preferably, an annular body is arranged in the oil bin, the annular body is sleeved on the periphery of the air passage and connected with the heating wire, the position of the second port is higher than that of the heating wire, the loop passage is formed between the annular body and the air passage, the upper end of the annular body and the upper end of the air passage form the fourth port, the sealing piece is provided with a hole for communicating the air outlet, and the fourth port is communicated with the hole.

Preferably, the periphery of the air passage is further provided with a support frame for supporting the heating wire, the support frame is of an annular structure, the upper end of the support frame is connected with the annular body, the lower end of the support frame is connected with the heating wire, the lower end of the support frame and the lower end of the air passage form the third port, and the annular body, the support frame and the air passage form the loop channel together.

Preferably, an air path communicated with the air outlet hole, a microphone pneumatic switch arranged in the air path and a controller are further arranged in the oil bin, the microphone pneumatic switch and the heating wire are electrically connected with the controller, when air is sucked from the air outlet hole, negative pressure is generated in the air path, the microphone pneumatic switch is started, and the controller controls the heating wire to be electrified and heated; when the air outlet stops sucking air, the air pressure in the air path is in a balanced state, the microphone pneumatic switch is turned off, and the controller controls the heating wire to stop heating.

Preferably, a power supply device for supplying power to the heating wire is further arranged in the shell, and the power supply device is electrically connected with the heating wire.

Preferably, the shell is further provided with an oil filling hole for communicating the oil bin, and the oil filling hole is provided with a seal plug.

Preferably, the oil bin and the position corresponding to the air inlet hole are made of transparent materials, and the liquid level of oil in the oil bin can be observed through the air inlet hole.

Preferably, the material of shutoff piece is silica gel.

In the technical scheme provided by the utility model, the electronic cigarette comprises a shell, an oil bin, a heating wire, an air passage and a loop channel, wherein the shell is provided with an air inlet and an air outlet; the air passage is arranged in the oil bin and comprises a first port and a second port, the first port is communicated with the air inlet hole, the second port corresponds to the middle position of the heating wire, and external air sequentially passes through the air inlet hole, the first port and the second port of the air passage to be flushed into the heating wire and atomized; the circuit channel is arranged in the oil bin and comprises a third port and a fourth port, the heating wire is located between the third port and the second port, the fourth port is communicated with the air outlet, and gas atomized by the heating wire is discharged from the exhaust hole through the third port and the fourth port of the circuit channel in sequence. So set up, the outside gas that gets into can be followed the second port impact heating wire's of air flue intermediate position rather than the lateral part position of heating wire, and the intermediate position temperature of heating wire is higher, can reduce the temperature of heating wire intermediate position to a certain extent after the intermediate position contact with the heating wire, make the temperature of whole heating wire more balanced, when the intermediate position of air current process heating wire stretches to the partial side position, the bulk temperature of air current also can rise, oil in the oil bunker just can be atomized more fully, thereby make production smog more strong, the taste reduction degree has been promoted simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Figure 1 is a cross-sectional view of a prior art e-cigarette;

fig. 2 is a schematic view of an appearance structure of an electronic cigarette according to an embodiment of the present invention;

fig. 3 is a sectional view of an electronic cigarette according to an embodiment of the present invention;

fig. 4 is a B-direction cross-sectional view of the electronic cigarette in the embodiment of the present invention;

fig. 5 is an exploded schematic view of the oil sump and the plugging member in the embodiment of the present invention.

In FIGS. 1-5:

1-shell, 2-air inlet hole, 3-air outlet hole, 4-oil bin, 5-heating wire, 6-air flue, 601-first port, 602-second port, 7-loop channel, 701-third port, 702-fourth port, 8-sealing piece, 81-annular bulge, 811-through hole, 82-open hole, 9-blocking piece, 10-annular body, 11-support frame, 12-air channel, 13-controller, 14-power supply device, 15-oil injection hole and 16-blocking.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

An object of this embodiment is to provide an electronic cigarette, which solves the problems of insufficient atomization, insufficient smoke and poor mouthfeel restoration degree of an electronic cigarette in the prior art.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

Referring to fig. 2-5, in the present embodiment, the electronic cigarette includes a housing 1, an oil bin 4, a heater 5 disposed in the oil bin 4, an air passage 6, and a loop channel 7, as shown in fig. 2, the housing 1 is provided with an air inlet 2 and an air outlet 3, as shown in fig. 3 and 4, the heater 5 is used for atomizing oil in the oil bin 4, and the heater 5 is horizontally disposed in the oil bin 4; the air duct 6 comprises a first port 601 and a second port 602 which are communicated with each other, wherein the first port 601 is communicated with the air inlet hole 2, and the second port 602 corresponds to the middle position of the heating wire 5, so that under the suction action of the air outlet hole 3, external air can enter the housing 1 from the air inlet, then flow in a gap between the oil bin 4 and the housing 1, and then sequentially pass through the first port 601 and the second port 602 of the air duct 6 to rush into the middle position of the heating wire 5. The heating wire 5 is directly arranged in the oil bin 4, equivalently the heating wire 5 is soaked in the oil bin 4, the heating wire 5 is contacted with the oil in the oil bin 4 in a high-temperature state, and the external air is contacted with the heating wire 5 with high temperature and the oil, so that the oil in the oil bin 4 is atomized. The circuit channel 7 comprises a third port 701 and a fourth port 702 which are communicated with each other, and the heating wire 5 is located between the third port 701 and the second port 602, so that the gas atomized by the heating wire 5 enters from the third port 701 of the circuit channel 7 and is discharged from the fourth port 702, and the fourth port 702 is communicated with the air outlet 3, so that the gas atomized by the heating wire 5 is finally discharged from the air outlet 3.

With the arrangement, the entering external air can impact the middle position of the heating wire 5 but not the side position of the heating wire 5, the temperature of the middle position of the heating wire 5 is higher, and the temperature of the middle position of the heating wire 5 can be reduced to a certain extent after the external air contacts the middle position of the heating wire 5, so that the temperature of the whole heating wire 5 is more balanced, when the air flow extends to the side position through the middle position of the heating wire 5, the overall temperature of the air flow can also rise, the oil in the oil bin 4 can be more fully atomized, and the generated smoke is stronger; and outside gas self is obviously lower than heating wire 5 temperature, can effectively reduce heating wire 5's temperature when assaulting heating wire 5, avoids the taste variation that high temperature caused, promotes the taste degree of restitution.

As an alternative embodiment, the air duct 6 is a tubular structure and is vertically arranged in the oil bin 4, as shown in fig. 2 and 3, the lower port of the tubular structure is the second port 602, the upper port corresponds to the air outlet 3, the upper port of the tubular structure is blocked by the blocking piece 9, specifically, the upper end of the oil bin 4 is provided with the sealing piece 8, the sealing piece 8 is used for closing the opening of the oil bin 4 to form a closed space in the oil bin 4, as shown in fig. 5, the sealing piece 8 of the oil bin 4 is provided with the annular protrusion 81, the upper end of the tubular structure is nested in the annular protrusion 81, the side wall of the annular protrusion 81 is provided with the through hole 811, the tubular structure is provided with the first port 601, the first port 601 corresponds to the position of the through hole 811, thus, the through hole 811 is communicated with the air inlet hole 2, the air duct 6 is nested so that the outer wall of the upper end of the tubular structure is sealed by the annular protrusion 81, and the situation that the air passing through hole 811, namely, the air leakage problem, the external air entering from the air inlet hole 2 must pass through the through hole 811 of the annular protrusion 81 and the first port 601 in sequence to enter the air duct 6. Specifically, the housing 1 is further provided with a blocking piece 9 for blocking the upper port of the tubular structure, so as to prevent the gas entering the gas passage 6 from escaping from the upper port, so that the gas entering the gas passage 6 from the first port 601 can only flow to the second port 602, and the blocking piece 9 contacts with the inner wall of the housing 1, so as to separate the gas inlet hole 2 from the gas outlet hole 3, so that the external gas entering from the gas inlet hole 2 can only enter the through hole 811 of the annular protrusion 81, and prevent the external gas entering from the gas inlet hole 2 from diffusing to the gas outlet hole 3 through the gap between the blocking piece 9 and the housing 1.

As an alternative embodiment, the air intake holes 2, the through holes 811 and the first ports 601 are all provided in two, the two air intake holes 2 are symmetrically provided on two sides of the housing 1, the two through holes 811 are symmetrically provided on two sides of the annular protrusion 81, the first ports 601 are symmetrically provided on two sides of the tubular structure, the air intake holes 2, the through holes 811 and the first ports 601 on one side of the housing 1 correspond to each other, the air intake holes 2, the through holes 811 and the first ports 601 on the other side of the housing 1 correspond to each other, the air intake holes 2, the through holes 811 and the first ports 601 on one side of the housing 1 are set as one set of air intake devices, and the air intake holes 2, the through holes 811 and the first ports 601 on the other side of the housing.

So set up, when breathing in from venthole 3, have two sets of air inlet unit to admit air simultaneously, can guarantee the effective of admitting air better and go on, avoid one of them set of air inlet unit's inlet port 2 or through-hole 811 or first port 601 to block up the condition that leads to whole casing 1 can't admit air.

As an alternative embodiment, an annular body 10 is disposed in the oil bin 4, the annular body 10 is sleeved on the periphery of the air passage 6, the annular body 10 can be fixed relative to the sealing member 8, that is, the annular body 10 is fixed relative to the oil bin 4, the annular body 10 can be integrated with the oil bin 4, the lower end of the annular body 10 is connected with the heating wire 5, as shown in fig. 1, so that a loop channel 7 is formed between the annular body 10 and the air passage 6, and the second port 602 of the air passage 6 is higher than the heating wire 5, so that the loop channel 7 is communicated with the air passage 6, so that the atomized gas flows from the air passage 6 to the loop channel 7 better, furthermore, the upper end of the annular body 10 and the upper end of the air passage 6 form a fourth port 702, the sealing member 8 is provided with an opening 82 for communicating the air outlet 3, and the fourth port 702 is communicated with the opening 82, so that the fourth port 702 is communicated with the air outlet 3, so that, The opening 82 in the closure 8 is finally vented through the vent 3. In the preferred embodiment, the annular body 10 and the air duct 6 form an annular return channel 7, and as shown in fig. 5, two openings 82 are provided on the sealing member 8 of the oil sump 4 and are symmetrically located on two sides of the air duct 6, so that the annular return channel 7 communicates with the two openings 82. In other embodiments, other structures may be disposed in the oil bin 4 to form the circuit channel 7, so that the atomized gas can be discharged from the circuit channel 7 through the opening 82 and finally out of the gas outlet 3.

So set up, the annular body 10 simple structure constitutes return circuit passageway 7 with the cooperation of air flue 6 and realizes easily, and the annular return circuit passageway 7 of constitution provides sufficient flow space for the gas after the atomizing, though the annular body 10 sets up in oil storehouse 4 in addition, keeps apart oil and gas in the oil storehouse 4, avoids the two to influence each other.

As an alternative embodiment, the periphery of the air duct 6 is provided with a support frame 11, as shown in fig. 3, the support frame 11 is in a ring structure and is used for supporting the heating wire 5, and the upper end of the support frame 11 is connected with the annular body 10, and the lower end of the support frame 11 is connected with the heating wire 5, that is, the support frame 11 is disposed between the annular body 10 and the heating wire 5, the lower end of the support frame 11 and the lower end of the air duct 6 form a third port 701, and the annular body 10, the support frame 11 and the air duct 6 together form the.

So set up, support heater 5 and fixed heater 5 better through setting up support frame 11, and support frame 11 thoroughly keeps apart the return circuit passageway 7 of oil in the oil bin 4 and gas, avoids mutual influence.

As an optional implementation manner, an air path 12, a microphone pneumatic switch, and a controller 13 are further disposed in the oil bin 4, as shown in fig. 3, wherein the air path 12 is communicated with the air outlet 3, the microphone pneumatic switch is disposed in the air path 12, and the microphone pneumatic switch and the heater 5 are both electrically connected to the controller 13. The microphone pneumatic switch comprises an airflow sensor and an airflow sensing switch, and is placed in the air passage 12 in the oil bin 4. When a user sucks air, namely air is sucked from the air outlet 3, negative pressure is generated in the air passage 12, the airflow sensor of the microphone pneumatic switch senses negative pressure airflow, so that the airflow sensing switch is triggered to be turned on, the controller 13 receives the information and then the heating wire 5 is electrified and heated, and the electronic cigarette enters a working state; when the air outlet 3 stops sucking air, the air pressure in the air path 12 is in a balanced state, the air flow in the air path 12 disappears, the air flow sensing switch is turned off, the microphone pneumatic switch is turned off, and the controller 13 controls the heating wire 5 to stop heating after receiving the information.

So set up, when the user smoked the electron cigarette, the work was started promptly to the electron cigarette, and when the user stopped the suction, the electron cigarette then stop work, and whole process need not to set up other switch for the use of electron cigarette is very convenient, and prevents the tobacco tar loss.

As an optional embodiment, a power supply device 14 for supplying power to the heating wire 5 is further disposed in the housing 1, the power supply device 14 is electrically connected to the heating wire 5, the power supply device 14 may be, but is not limited to, a battery, and the controller 13 controls connection and disconnection between the battery and the heating wire 5.

With the arrangement, the power supply device 14 ensures effective heating of the heating wire 5, so that normal use of the electronic cigarette is ensured.

As an optional embodiment, the housing 1 is further provided with an oil filling hole 15, the oil filling hole 15 is provided with a sealing plug 16, when oil needs to be added into the oil bin 4, the sealing plug 16 is opened, so that an external machine special for oil filling is enabled to fill oil into the oil bin 4 through the oil filling hole 15, after the oil filling is completed, the oil filling machine is withdrawn from the electronic cigarette, and then the sealing plug 16 is directly sealed and plugged into the oil filling hole 15.

So set up, the oiling process is simple and convenient, can not cause any influence to the inside part of shells 1 such as oil storehouse 4 and gas circuit 12 circulation process moreover.

As an optional embodiment, the position of the side wall of the oil bin 4 corresponding to the air inlet 2 is made of a transparent material, so that the liquid level of the oil in the oil bin 4 can be observed through the air inlet 2 and the side wall of the oil bin 4.

So set up, through the oil level of visual observation oil bin 4 to whether accurate judgement need refuel in to oil bin 4, avoid lacking the condition that oil leads to the atomizing can not effectively go on in the oil bin 4, guarantee the normal use of electron cigarette.

In a preferred embodiment, the material of the blocking member 9 is silicone.

So set up, the silica gel material has fine elasticity, can contact better with the pipe wall of the last port of air flue 6 to seal the last port of air flue 6 closely, equally can also contact with 1 inner wall of casing better, thereby thoroughly keep apart between inlet port 2 and the venthole 3, do not keep the gap, can not have the gas leakage condition.

The electronic cigarette is specifically described with reference to the above embodiments, in this embodiment, the electronic cigarette includes a housing 1, an oil bin 4, a heating wire 5 disposed in the oil bin 4, an air passage 6, and a loop channel 7, an air inlet 2 and an air outlet 3 are respectively disposed on a side portion and a top portion of the housing 1, and the heating wire 5 is horizontally disposed in the oil bin 4 and is used for atomizing oil in the oil bin 4; the air passage 6 is vertically arranged in the oil bin 4, the upper end of the oil bin 4 is provided with a sealing piece 8 for sealing an opening of the oil bin 4, the lower port of the air passage 6 corresponds to the middle position of the heating wire 5, the upper port of the air passage 6 corresponds to the air outlet hole 3, an annular bulge 81 is arranged on the sealing piece 8, the upper end of the air passage 6 is nested in the annular bulge 81, the side wall of the annular bulge 81 is provided with a through hole 811, a first port 601 is arranged on the air passage 6 corresponding to the through hole 811, and the first port 601 is communicated with the air inlet hole 2; still be equipped with the shutoff piece 9 that is used for the upper port of shutoff tubular structure in the casing 1, shutoff piece 9 contacts with the inner wall of casing 1, and the material of shutoff piece 9 is silica gel. Be provided with the ring body 10 in the oil storehouse 4, the periphery at air flue 6 is established to ring body 10 cover, the periphery of air flue 6 still is equipped with the support frame 11 that is used for supporting heater 5, support frame 11 is the loop configuration, the upper end of support frame 11 is connected with ring body 10, the lower extreme is connected with heater 5, the lower port of air flue 6 is higher than heater 5's position, ring body 10, support frame 11 and air flue 6 constitute return circuit passageway 7 jointly, be equipped with trompil 82 that is used for communicateing venthole 3 on the sealing member 8, and return circuit passageway 7's last port is linked together with trompil 82, gas after 5 atomizing of heater is discharged by venthole 3 through return circuit passageway 7 in proper order. Still be equipped with the gas circuit 12 that is linked together with venthole 3 in the oil bunker 4, the miaow head pneumatic switch of setting in gas circuit 12, and controller 13, still be equipped with the power supply unit 14 that is used for providing electric power to heater 5 in the casing 1 and be used for communicateing oil bunker 4's oil filler point 15, oil filler point 15 department is equipped with to seal up and blocks up 16, power supply unit 14 is connected with heater 5 electricity, the position that oil bunker 4 and inlet port 2 correspond is transparent material, can observe the liquid level of the interior oil of oil bunker 4 through inlet port 2.

So set up, the outside gas of entering can strike the intermediate position of heater 5 rather than the lateral part position of heater 5, and the intermediate position temperature of heater 5 is higher, can reduce the temperature of heater 5 intermediate position to a certain extent after contacting with the intermediate position of heater 5, make the temperature of whole heater 5 more balanced, when the intermediate position of air current process heater 5 stretchs to the skew lateral part position, the bulk temperature of air current also can rise, can abundant atomized oil, it is more strong to make smog.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The utility model provides a plurality of schemes contain the basic scheme of itself, mutual independence to restrict each other, but it also can combine each other under the condition of not conflicting, reaches a plurality of effects and realizes jointly.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An electronic cigarette, comprising:

the air purifier comprises a shell (1), wherein an air inlet (2) and an air outlet (3) are formed in the shell (1);

an oil bin (4) arranged in the housing (1);

the heating wire (5) is horizontally arranged in the oil bin (4) and is used for atomizing oil in the oil bin (4);

the air passage (6) is arranged in the oil bin (4), the air passage (6) comprises a first port (601) and a second port (602) which are communicated with each other, the first port (601) is communicated with the air inlet hole (2), the second port (602) corresponds to the middle position of the heating wire (5), and external air sequentially passes through the air inlet hole (2), the first port (601) and the second port (602) of the air passage (6) to be flushed into the heating wire (5) and atomized;

the oil sump is characterized in that a loop channel (7) is arranged in the oil sump (4), the loop channel (7) comprises a third port (701) and a fourth port (702) which are communicated with each other, the heating wire (5) is located between the third port (701) and the second port (602), the fourth port (702) is communicated with the air outlet hole (3), and gas atomized by the heating wire (5) sequentially passes through the third port (701) and the fourth port (702) of the loop channel (7) and is discharged from the air outlet hole (3).

2. The electronic cigarette according to claim 1, wherein the air duct (6) is of a tubular structure and is vertically disposed in the oil bin (4), the lower port of the tubular structure is the second port (602), the upper port of the tubular structure corresponds to the air outlet hole (3), the upper end of the oil bin (4) is provided with a sealing member (8) for sealing the opening of the oil bin (4), the sealing member (8) is provided with an annular protrusion (81), the upper end of the tubular structure is nested in the annular protrusion (81), the side wall of the annular protrusion (81) is provided with a through hole (811), and the tubular structure is provided with the first port (601) at a position corresponding to the through hole (811); the shell (1) is also internally provided with a plugging piece (9) for plugging the upper port of the tubular structure, and the plugging piece (9) is in contact with the inner wall of the shell (1) to prevent external gas entering from the gas inlet hole (2) from diffusing to the gas outlet hole (3).

3. The electronic cigarette according to claim 2, wherein the air inlet hole (2), the through hole (811) and the first port (601) are disposed in two and symmetrically disposed on two sides of the housing (1), the annular protrusion (81) and the tubular structure, respectively, and the air inlet hole (2), the through hole (811) and the first port (601) correspond to each other.

4. The electronic cigarette according to claim 2, wherein an annular body (10) is disposed in the oil bin (4), the annular body (10) is sleeved on the periphery of the air passage (6), the annular body (10) is connected with the heating wire (5), the position of the second port (602) is higher than the position of the heating wire (5), the loop channel (7) is formed between the annular body (10) and the air passage (6), the upper end of the annular body (10) and the upper end of the air passage (6) form the fourth port (702), the sealing member (8) is provided with an opening (82) for communicating the air outlet hole (3), and the fourth port (702) is communicated with the opening (82).

5. The electronic cigarette according to claim 4, wherein a support frame (11) for supporting the heater (5) is further disposed on the periphery of the air duct (6), the support frame (11) is in a ring structure, the upper end of the support frame (11) is connected to the annular body (10), the lower end of the support frame (11) is connected to the heater (5), the lower end of the support frame (11) and the lower end of the air duct (6) form the third port (701), and the annular body (10), the support frame (11) and the air duct (6) together form the loop channel (7).

6. The electronic cigarette according to claim 1, wherein the oil bin (4) is further provided with an air passage (12) communicated with the air outlet (3), a microphone pneumatic switch arranged in the air passage (12), and a controller (13), the microphone pneumatic switch and the heater (5) are both electrically connected to the controller (13), when air is sucked from the air outlet (3), negative pressure is generated in the air passage (12), the microphone pneumatic switch is activated, and the controller (13) controls the heater (5) to be electrified and heated; when the air outlet (3) stops sucking air, the air pressure in the air path (12) is in a balanced state, the microphone pneumatic switch is turned off, and the controller (13) controls the heating wire (5) to stop heating.

7. The electronic cigarette according to claim 1, wherein a power supply device (14) for supplying power to the heating wire (5) is further provided in the housing (1), and the power supply device (14) is electrically connected to the heating wire (5).

8. The electronic cigarette according to claim 1, wherein an oil filling hole (15) for communicating the oil sump (4) is further formed in the housing (1), and a sealing plug (16) is arranged at the oil filling hole (15).

9. The electronic cigarette according to claim 1, wherein the oil bin (4) is made of a transparent material at a position corresponding to the air inlet hole (2), and the liquid level of the oil in the oil bin (4) can be observed through the air inlet hole (2).

10. The electronic cigarette according to claim 2, wherein the material of the blocking piece (9) is silica gel.

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