CN207821109U - A kind of electronic cigarette atomizing core and the electronic cigarette - Google Patents

Abstract

The utility model discloses a kind of electronic cigarette atomizing core and the electronic cigarettes, wherein electronic cigarette atomizing core include atomization cotton for being connected with electronic cigarette bunker inner cavity, on heating atomization cotton tobacco tar to generate the heat generating member of smog, the heat generating member is not directly contacted with atomization cotton, and the heat that heat generating member generates is transferred to atomization cotton by way of heat radiation；The heat generating member is sheathed in atomization cotton, has heat radiation gap between heat generating member side wall and atomization cotton side wall.The utility model has the following advantages：Atomization cotton is not easy to be burnt, and heat generating member surface, which will not condense, tobacco tar slag, and heat generating member power is smaller, and smog is in good taste, not entail dangers to health, and battery is long, and security performance is high, and electronic cigarette service life is long.

Description

An electronic cigarette core and the electronic cigarette

technical field

The utility model belongs to the technical field of electronic cigarettes, in particular to an electronic smoke core and the electronic cigarette.

Background technique

At present, in the electronic cigarette core that uses heating elements to heat the oil on the atomized cotton to generate smoke for the user to inhale, the heating element is in direct contact with the atomized cotton, and the atomized cotton is connected to the inner cavity of the electronic oil chamber. The heat generated by the heating element is directly transferred to the atomized cotton, heating the e-liquid on the atomized cotton to produce smoke.

The existing method of heating e-liquid to generate smoke by direct heat transfer has the following disadvantages:

First, because the heating element is in direct contact with the atomized cotton, the atomized cotton is easily burned by the heating element, which affects the taste of the smoke and affects the service life of the electronic cigarette.

Second, when the electronic cigarette is left standing, the heating element is soaked in the e-liquid for a long time, and a layer of e-liquid residue will condense on the surface of the heating element. When the heating element works again, the e-liquid residue condensed on its surface will be burnt or carbonized And produce peculiar smell, have a strong impact on smog mouthfeel and can endanger human body health.

Third, in order to prevent the atomized cotton from being partially burned by the heating element, the atomized cotton is generally designed to be thicker so that it can absorb more smoke oil and heat. At the same time, it is very likely that the atomized cotton will be oversaturated with oil leakage, and a higher output power is required to atomize into smoke. Therefore, the greater the output power, the shorter the service life of the battery and the lower the safety performance.

Contents of the invention

In the existing electronic cigarette cartridges, the heating element is in direct contact with the atomized cotton, and the heat generated by the heating element is directly transferred to the e-liquid on the atomized cotton, heating the e-liquid to generate smoke, this heating method is easy to burn, and the resulting The taste of the smoke is poor, which endangers human health. At the same time, the output power of the atomization is high, the service life of the battery is short, the service life of the electronic cigarette is short, and the safety performance is low. The purpose of this utility model is to provide an improved electronic cigarette core and the electronic cigarette in view of the above-mentioned deficiencies in the prior art. The power of the device is small, the taste of the smoke is good, it will not endanger human health, the service life of the battery is long, the safety performance is high, and the service life of the electronic cigarette is long.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

An electronic cigarette core, including atomized cotton used to communicate with the inner cavity of the electronic cigarette oil tank, and a heating element used to heat the smoke oil on the atomized cotton to generate smoke. The atomized cotton is not in direct contact, and the heat generated by the heating element is transferred to the atomized cotton through thermal radiation.

With the above structure, the heating element is not in direct contact with the atomized cotton. When the heating element is working, the e-liquid locked on the atomized cotton is heated and atomized into smoke by means of heat radiation for the user to inhale. Since the heating element is not in contact with the atomized cotton, the atomized cotton is not easily burned by the heat generated by the heating element; since the heating element is not in contact with the atomized cotton, the heating element is not in contact with the e-liquid or there is no e-liquid on the surface of the heating element. Therefore, the surface of the heating element will not condense and have smoke oil residue, so there will be no phenomenon of carbonizing the smoke oil on the surface of the heating element during the working process of the heating element, which will make the smoke have a peculiar smell, so the smoke tastes better and will not endanger human health. , The electronic cigarette has a long service life.

As a preferred manner, the heating element is sheathed in the atomized cotton, and there is a heat radiation gap between the side wall of the heating element and the side wall of the atomized cotton.

With the above structure, since the atomized cotton is covered on the outer surface of the heating element, when the heating element is working, the heat generated by the heating element is fully utilized to help the e-liquid be atomized to generate smoke, so that the smoke The speed at which the oil is atomized to produce smoke is faster; in this atomization process, most of the heat heats and atomizes the smoke oil locked on the atomized cotton into smoke through the thermal radiation gap in the form of heat radiation, so as to avoid the atomized cotton from being burned The carbonization of coke and e-liquid improves the taste of smoke.

As a preferred method, it also includes an atomization sleeve, in which both the heating element and the atomization cotton are located, and the atomization sleeve is provided with a first oil hole for communicating with the inner cavity of the oil tank and the atomization cotton.

Further, the atomization sleeve is also provided with a heat insulation tube, which is sleeved on the atomization cotton, and a second oil hole connecting the first oil hole and the atomization cotton is opened on the heat insulation tube.

Furthermore, a fixing frame is provided between the atomized cotton and the heating element, and the tension of the fixed frame makes the side wall of the atomized cotton abut against the inner wall of the heat insulating tube.

With the above structure, the atomizing cotton is fixed in the atomizing sleeve through the fixing frame, so that one side of the atomizing cotton is close to the second oil hole, and the supply of smoke oil is smoother; so that the other side of the atomizing cotton The lint of the atomized cotton will not come into contact with the heating element, avoid being burned, and avoid the phenomenon of blocking the airflow passing through the heat radiation gap.

Furthermore, the air inlet passage is arranged at the central axis of the heating element, and an airflow reflection chamber connected to the outlet of the airflow passage and perpendicular to it is provided in the atomization sleeve; the airflow reflection chamber communicates with the airflow passage and the heat radiation gap.

With the above structure, the air intake passage is arranged in the middle of the heating element. When smoking, the airflow enters the atomization sleeve from the air intake channel, and then the airflow reflection cavity at the outlet of the air intake channel disperses the air reflection, so that the airflow can be evenly dispersed to the heat radiation gap, and then the airflow flows out from the heat radiation gap and The smoke generated in the thermal radiation gap that has been heated and atomized is fully brought out, and finally inhaled by the user.

Further, a heat insulation cavity is provided between the heat insulation pipe and the atomizing sleeve.

With the above structure, the heat insulation tube can not only fix the atomized cotton, but also isolate the heat from the atomized cotton from being transferred to the outer surface of the electronic cigarette. Since there is a heat insulation cavity between the heat insulation tube and the atomizing sleeve, the double heat insulation can prevent the temperature of the outer surface of the electronic cigarette from being too high, and at the same time prevent the heat loss generated during the working process of the heating element, thereby achieving the effect of heat preservation. Improve the utilization rate of heat.

As another preferred manner, it also includes an atomization sleeve, the atomization cotton is fixed in the atomization sleeve through the protrusion on the atomization sleeve, and the heating element is sleeved outside the protrusion.

Further, a heat insulation tube is provided outside the atomization jacket, and a heat insulation cavity is provided between the heat insulation pipe and the atomization jacket.

Further, the heat insulation tube is provided with an air inlet inclined hole communicating with the heat radiation gap, and the atomization sleeve is provided with an air outlet inclined hole communicated with the heat radiation gap; The gap is a spiral flow, and flows out through the air outlet oblique hole.

With the above structure, when the outside air enters the heat radiation gap, it enters the heat radiation gap through the air inlet slant hole on the heat insulation tube, and the air forms a spiral airflow in the heat radiation gap, and finally passes through the air outlet slant hole on the atomization sleeve. Exhaust, bringing the smoke into the user's mouth. Both the air inlet slant hole and the air outlet slant hole are set along the tangential direction of the inner wall of the air inlet channel to ensure that the airflow in the heat radiation gap forms a spiral airflow. During this process, the smoke can be screened due to the centrifugal effect of the spiral airflow, so that The taste of the smoke brought out is more delicate. The convex part on the atomizing sleeve can not only fix the atomizing cotton but also change the size of the heat radiation gap, so as to ensure that the air flow is close to the atomizing cotton, that is, the air flow can better pass through the heat radiation gap, and then the smoke is brought out more fully, and the smoke tastes better. Better, so that the satisfaction of the user in the smoking process is stronger.

As a preferred manner, the heat radiation gap is 0.6-5 mm, preferably 1.2-3.5 mm.

The smaller the thermal radiation gap, the easier the radiant heat of the heating element is absorbed and atomized by the atomized cotton, and the lower the energy loss, so the required atomization power is smaller, so the thermal radiation gap is preferably 0.6~5.0mm, more It is preferably 1.2~3.5mm, which effectively solves the problem of cotton burning while ensuring that the amount of smoke can meet the needs of users, and requires low atomization power, and can prolong the service life of the battery.

As a preferred manner, the atomized cotton has a thickness of 0.5-3 mm, preferably 0.8-2.1 mm.

The thicker the atomized cotton is, the more e-liquid is stored, that is to say, more power is needed to atomize the e-liquid into smoke, so its thickness is preferably 0.5~3.0mm, more preferably 0.8~2.1mm. When the thickness of the atomized cotton is 0.5-3.0mm, the atomization power P=6-18W is required to atomize the e-liquid into smoke; preferably, when the thickness of the atomized cotton is 0.8-2.1mm, the atomization power is required to be 8 ~15W can be atomized to produce smoke, the lower the power, the better the safety performance of the battery and the longer the battery life.

When the heating element is working, a small part of the heat radiation energy absorbed by the atomized cotton is absorbed and preheated by the e-liquid, while most of the energy is used to atomize the e-liquid and emit it in the air and smoke. The thickness is relatively thin, and the stored e-liquid is limited, so when the heating element is working, the e-liquid can be atomized to form smoke within 0.1 seconds to 2 seconds, that is, the speed of smoke output is fast, and the energy utilization rate is high, thereby reducing the power. Extend battery life.

Based on the same inventive concept, the utility model also provides an electronic cigarette, including an oil tank and a battery assembly, and also includes the atomizing core, the atomizing cotton communicates with the inner cavity of the oil tank, and the battery assembly and the heating electrical connections.

Further, it also includes an outer sleeve, the atomizing core and the oil tank are placed in the outer sleeve, the outer wall of the oil tank is provided with a groove, and an air outlet channel is formed between the groove and the side wall of the outer sleeve.

The air outlet channel is set on the outer wall of the oil tank, making full use of the structural space, making the structure of the electronic cigarette simpler and lower in use cost.

Compared with the prior art, the utility model has the following advantages: the atomized cotton is not easy to be burnt, the surface of the heating element will not condense with smoke oil residue, the power of the heating element is small, the taste of the smoke is good, and it will not endanger human health. Long service life, high safety performance, and long service life of electronic cigarettes.

Description of drawings

Fig. 1 is a schematic structural diagram of Embodiment 1 of the atomizing core of the present invention.

Fig. 2 is a schematic structural diagram of Embodiment 2 of the atomizing core of the present invention.

Fig. 3 is a schematic structural diagram of Embodiment 1 of the electronic cigarette of the present invention.

FIG. 4 is an exploded view of the assembly in FIG. 3 after the battery assembly is removed.

FIG. 5 is an exploded view of FIG. 4 .

Fig. 6 is a schematic structural diagram of Embodiment 2 of the electronic cigarette of the present invention.

FIG. 7 is an exploded view of the assembly in FIG. 6 after the battery assembly is removed.

FIG. 8 is an exploded view of FIG. 7 .

Among them, 1 is the oil tank, 101 is the groove, 2 is the atomized cotton, 3 is the heating element, 4 is the heat radiation gap, 5 is the atomization sleeve, 501 is the first oil hole, 502 is the convex part, 503 is the Air outlet slanted hole, 6 is the heat insulation pipe, 601 is the second oil hole, 602 is the air intake slant hole, 7 is the fixed frame, 8 is the air intake channel, 9 is the airflow reflection cavity, 10 is the heat insulation cavity, 11 is the The battery assembly, 12 is the outer casing, 13 is the air outlet channel, 14 is the air intake pipe, 15 is the connector, 16 is the fixing seat, 17 is the lead wire, 18 is the inner electrode, 19 is the insulating ring, and 20 is the atomizing core.

Detailed ways

Embodiment 1 of atomizing core

As shown in FIG. 1 , the electronic cigarette core 20 includes an atomized cotton 2 for communicating with the inner cavity of the electronic cigarette oil chamber 1, and a heating element 3 for heating the oil on the atomized cotton 2 to generate smoke. The heating element 3 is not in direct contact with the atomized cotton 2, and the heat generated by the heating element 3 is transferred to the atomized cotton 2 by way of thermal radiation for heating the atomized e-liquid.

The heating element 3 is sleeved in the atomized cotton 2, and there is a heat radiation gap 4 between the side wall of the heating element 3 and the side wall of the atomized cotton 2. It can also be understood in this way: the outer surface of the heating element 3 is surrounded by the atomized cotton 2 , but the heating element 3 is not in contact with the atomized cotton 2, so the surface of the heating element 3 is not bonded with e-liquid; so when the heating element 3 is working, the heat generated by the heating element 3 heats the atomized mist through thermal radiation. The smoke produced by the e-liquid on Huamian 2 has a purer taste and no peculiar smell.

Since the energy of thermal radiation decreases with the increase of the distance from the radiant heat source, the size b of the thermal radiation gap 4 in this embodiment is 0.6-5 mm, preferably 1.2-3.5 mm.

In order to ensure that the heating element 3 is not in contact with the atomized cotton 2 and atomize the e-liquid to form smoke within 0.1 seconds to 2 seconds, the thickness a of the atomized cotton 2 in this embodiment is 0.5 to 3 mm, preferably 0.8~2.1mm.

The electronic cigarette atomizing core 20 also includes an atomizing sleeve 5, the heating element 3 and the atomizing cotton 2 are located in the atomizing sleeve 5, and the atomizing sleeve 5 is provided with a first opening for connecting the inner cavity of the oil tank 1 and the atomizing cotton 2. Oil hole 501 .

The atomization sleeve 5 is also provided with a heat insulation pipe 6, which is sleeved outside the atomized cotton 2, and the heat insulation pipe 6 is provided with a second passage connecting the first oil hole 501 and the atomized cotton 2. Oil hole 601.

A fixing frame 7 is provided between the atomized cotton 2 and the heating element 3 , and the tension of the fixed frame 7 makes the side wall of the atomized cotton 2 abut against the inner side wall of the heat insulating tube 6 .

The air intake channel 8 is arranged at the central axis of the heating element 3 , and the outer wall of the air intake channel 8 is not in contact with the heating element 3 . The atomizing sleeve 5 is provided with an airflow reflection chamber 9 which is connected to the outlet of the air inlet channel 8 and is vertical; the airflow reflection chamber 9 communicates with the air inlet passage 8 and the heat radiation gap 4 .

A heat insulation cavity 10 is provided between the heat insulation pipe 6 and the atomization sleeve 5 .

An air inlet pipe 14 is arranged at the center hole of the heating element 3 , and the air inlet passage 8 is formed in the center hole of the air inlet pipe 14 .

The bottom of the atomizing sleeve 5 is connected with the connecting piece 15 . The connecting piece 15 is provided with a fixing seat 16, and the connecting piece 15 is fixedly connected to the fixing seat 16 through the flange (not numbered) at the bottom of the atomizing sleeve 5, and the heating element 3 is connected with two lead wires 17 by means of welding or the like. Lead wire 17 is used as the two electrode wires of heating element 3; the strength of lead wire 17 can at least support heating element 3 so that heating element 3 neither contacts with atomized cotton 2 nor contacts with air intake pipe 14, such as lead wire 17 can use piano wire , stainless steel wire, etc.; the lead wire 17 of the heating element 3 and the intake pipe 14 are fixed by the fixing seat 16, so the heating element 3 is suspended and fixed between the atomized cotton 2 and the intake pipe 14 through the lead wire 17, so that the heating element 3. It does not contact the atomized cotton 2 or the air intake pipe 14, so that the air intake pipe 14 can reduce a part of the heat away and affect the atomization effect.

An inner electrode 18 is provided at the bottom of the intake pipe 14 , and the inner electrode 18 is insulated and connected to the connector 15 through an insulating ring 19 .

Embodiment 2 of the atomizing core

As shown in FIG. 2 , the vaporization core 20 of the electronic cigarette includes an atomized cotton 2 for communicating with the inner cavity of the electronic cigarette oil chamber 1, and a heating element 3 for heating the oil on the atomized cotton 2 to generate smoke. The heating element 3 is not in direct contact with the atomized cotton 2, and the heat generated by the heating element 3 is transferred to the atomized cotton 2 by way of thermal radiation for heating the atomized e-liquid.

The heating element 3 is sleeved in the atomized cotton 2, and there is a heat radiation gap 4 between the side wall of the heating element 3 and the side wall of the atomized cotton 2. It can also be understood in this way: the heating element 3 is surrounded by the atomized cotton 2, But the heating element 3 is not in contact with the atomized cotton 2, so there is no smoke oil on the surface of the heating element 3; so when the heating element 3 is working, the heat generated by the heating element 3 heats the atomized atomized cotton through thermal radiation The smoke produced by the e-liquid on 2 is purer and has no peculiar smell.

Since the energy of thermal radiation decreases with the increase of the distance from the radiant heat source, the size b of the thermal radiation gap 4 in this embodiment is 0.6-5 mm, preferably 1.2-3.5 mm.

In order to ensure that the heating element 3 is not in contact with the atomized cotton 2 and atomize the e-liquid to form smoke within 0.1 seconds to 2 seconds, the thickness a of the atomized cotton 2 in this embodiment is 0.5 to 3 mm, preferably 0.8~2.1mm.

The electronic cigarette core 20 also includes an atomizing sleeve 5, the atomizing cotton 2 is fixed in the atomizing sleeve 5 through the protrusion 502 on the atomizing sleeve 5 and one end of the atomizing cotton 2 extends into the oil tank, and 3 sets of heating elements It is provided outside the convex portion 502 .

The atomization sleeve 5 is provided with a heat insulation tube 6 outside, and a heat insulation cavity 10 is provided between the heat insulation tube 6 and the atomization sleeve 5 .

The heat insulation tube 6 is provided with an air inlet inclined hole 602 communicating with the heat radiation gap 4, and the atomization sleeve 5 is provided with an air outlet inclined hole 503 communicated with the heat radiation gap 4; , in a spiral flow in the heat radiation gap 4, and flows out through the inclined air outlet hole 503.

A fixing frame 7 is provided between the atomized cotton 2 and the heating element 3 , and the tension of the fixed frame 7 makes the side wall of the atomized cotton 2 abut against the inner side wall of the atomizing sleeve 5 .

The bottom of the heat insulating tube 6 is connected to the connector 15, and the fixing seat 16 is clamped on the bottom of the heat insulating tube 6. Two lead wires 17 are connected to the heating element 3 by means of welding, etc., and these two lead wires 17 are used as two electrodes of the heating element 3 Wire; the strength of the lead wire 17 can at least support its heating element 3 so that the heating element 3 is not in contact with the atomized cotton 2 nor with the convex portion 502. For example, the lead wire 17 is made of piano wire, stainless steel wire, etc. The connecting piece 15 is provided with a fixing seat 16, and the lead wire 17 of the heating element 3 is fixed through the fixing seat 16, so the heating element 3 is suspended and fixed between the atomized cotton 2 and the convex part 502 through the lead wire 17, so that the heating element 3 does not Contacting the atomized cotton 2 and not contacting the convex portion 502 prevents the convex portion 502 from taking away part of the heat and affecting the atomization effect.

The electronic cigarette atomizing core 20 also includes an internal electrode 18 , and the internal electrode 18 is insulated and connected to the connecting member 15 through an insulating ring 19 .

Electronic cigarette embodiment one

As shown in Figures 3 to 5, the electronic cigarette includes an oil tank 1 and a battery assembly 11, and also includes the first embodiment of the atomizing core 20. Piece 3 is electrically connected.

The electronic cigarette also includes an outer sleeve 12. The atomizing core 20 and the oil tank 1 are placed in the outer sleeve 12. The outer wall of the oil tank 1 is provided with a groove 101, and an air outlet is formed between the groove 101 and the side wall of the outer sleeve 12. Channel 13.

The atomizing sleeve 5 extends into the inner cavity of the oil tank 1 , and the e-liquid in the inner cavity of the oil tank 1 is guided to the atomizing cotton 2 through the first oil passing hole 501 and the second oil passing hole 601 this time. The atomizing core 20 is fixedly connected with the outer casing 12 through the connecting piece 15 and seals the bottom of the outer casing 12 . The flow direction of the e-liquid and the airflow direction are shown by the arrows in FIG. 3 .

Electronic cigarette embodiment two

As shown in Figures 6 to 8, the electronic cigarette includes an oil tank 1 and a battery assembly 11, and also includes the second embodiment of the atomizing core 20. Piece 3 is electrically connected.

The electronic cigarette also includes an outer sleeve 12. The atomizing core 20 and the oil tank 1 are placed in the outer sleeve 12. The outer wall of the oil tank 1 is provided with a groove 101, and an air outlet is formed between the groove 101 and the side wall of the outer sleeve 12. Channel 13. Wherein, the flow direction of the e-liquid and the airflow direction are shown by the arrows in FIG. 6 .

The atomizing sleeve 5 seals the bottom of the inner cavity of the oil tank 1 , and the e-liquid in the inner cavity of the oil tank 1 is guided to the atomizing cotton 2 . The atomizing core 20 is fixedly connected with the outer casing 12 through the connecting piece 15 and seals the bottom of the outer casing 12 .

The method for generating smog from an electronic cigarette of the present invention includes using a heating element 3 to heat the smoke oil on the atomized cotton 2 to generate smog, the heating element 3 is coated with the atomized cotton 2, and the heating element 3 and the atomized cotton 2 without direct contact, during the working process of the heating element 3, the heat generated by the heating element 3 is transferred to the atomizing cotton 2 by means of thermal radiation for heating the atomized e-liquid. The heating element 3 is suspended by the lead wire 17, and the heating element 3 is neither in contact with the atomized cotton 2 nor in contact with any other components inside the heating element 3, so as to avoid heat loss.

In one embodiment, the heating element 3 is sleeved in the atomized cotton 2, and the airflow enters from one end of the central hole of the heating element 3, and is reflected into the heating element 3 and the atomization through the airflow reflection cavity 9 at the other end of the central hole of the heating element 3. The heat between the cotton 2 radiates through the gap 4 and flows out.

In another embodiment, the heating element 3 is sleeved in the atomized cotton 2, and there is a heat radiation gap 4 between the side wall of the heating element 3 and the side wall of the atomized cotton 2, and the airflow enters from one end of the heat radiation gap 4, It flows spirally in the heat radiation gap 4 and finally flows out from the other end of the heat radiation gap 4 .

Embodiments of the present utility model have been described above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned specific implementation, and the above-mentioned specific implementation is only illustrative, rather than limiting, and those of ordinary skill in the art Under the enlightenment of the utility model, personnel can also make many forms without departing from the purpose of the utility model and the scope protected by the claims, and these all belong to the protection scope of the utility model.

Claims (10)

1. An electronic cigarette core, including atomized cotton (2) used to communicate with the inner cavity of the electronic cigarette oil tank (1), and a heating element used to heat the oil on the atomized cotton (2) to generate smoke (3), characterized in that the heating element (3) is not in direct contact with the atomized cotton (2), and the heat generated by the heating element (3) is transferred to the atomized cotton (2) through thermal radiation. 2. The electronic cigarette core according to claim 1, characterized in that, the heating element (3) is sheathed in the atomized cotton (2), and the side wall of the heating element (3) is in contact with the atomized cotton (2) There is a heat radiation gap (4) between the side walls. 3. The atomizing core of electronic cigarette according to claim 2, characterized in that it also includes an atomizing sleeve (5), the heating element (3) and the atomizing cotton (2) are located in the atomizing sleeve (5), and the atomizing A first oil hole (501) for communicating with the inner cavity of the oil tank (1) and the atomized cotton (2) is opened on the chemical sleeve (5). 4. The electronic cigarette core according to claim 3, characterized in that, the atomization sleeve (5) is also provided with a heat insulation tube (6), and the heat insulation tube (6) is sleeved on the atomization cotton ( 2) Outside, a second oil hole (601) connecting the first oil hole (501) and the atomized cotton (2) is opened on the heat insulation pipe (6). 5. The electronic cigarette atomizing core according to claim 3 or 4, characterized in that, the air inlet passage (8) is set at the central axis of the heating element (3), and the atomization sleeve (5) is provided with a The outlet of the channel (8) is connected to the vertical airflow reflection chamber (9); the airflow reflection chamber (9) communicates with the air intake passage (8) and the heat radiation gap (4). 6. The atomizing core of the electronic cigarette according to claim 2, characterized in that it also includes an atomizing sleeve (5), and the atomizing cotton (2) is fixed on the atomizer through the protrusion (502) on the atomizing sleeve (5). Inside the casing (5), the heating element (3) is sleeved outside the convex portion (502). 7. The electronic cigarette atomizing core according to claim 6, characterized in that, the atomization sleeve (5) is provided with a heat insulation tube (6), and the heat insulation tube (6) and the atomization sleeve (5) There is a heat insulation cavity (10) between them. 8. The electronic cigarette atomizing core according to claim 7, characterized in that, the heat insulation tube (6) is provided with an air intake slant hole (602) communicating with the heat radiation gap (4), and the atomization sleeve (5) There is an air outlet inclined hole (503) connected to the heat radiation gap (4); after the air enters from the air inlet inclined hole (602), it flows in a spiral in the heat radiation gap (4), and passes through the air outlet inclined hole ( 503) outflow. 9. The electronic cigarette wick according to any one of claims 2-4 and any one of 6-8, characterized in that, the heat radiation gap (4) is 0.6-5 mm, preferably 1.2-3.5 mm. 10. An electronic cigarette, comprising an oil tank (1) and a battery assembly (11), characterized in that it further comprises the atomizing core (20) according to any one of claims 1 to 9, the atomizing cotton (2) It communicates with the inner cavity of the oil tank (1), and the battery assembly (11) is electrically connected with the heating element (3).