Inverted-smoking dry-burning-resistant electronic cigarette

Abstract

The utility model relates to a reversely-pumping dry-burning-resistant electronic cigarette which comprises a cigarette cartridge, an atomization cavity and an oil cavity are formed in the cigarette cartridge, an atomization assembly is arranged in the atomization cavity, the oil cavity and the atomization cavity are separated through an atomization cover, an air channel communicated with a suction nozzle and the atomization cavity is formed in the atomization cover, and a liquid inlet hole communicated with the oil cavity and the atomization cavity is formed in the atomization cover. The tar cavity is provided with a liquid inlet groove communicated with the liquid inlet hole in the outer circumferential direction of the atomization cover, the liquid inlet groove is formed in the side, away from the suction nozzle, of the tar cavity, a plurality of liquid storage grooves are formed in the outer circumferential direction of the liquid inlet groove, the liquid storage grooves are communicated with the liquid inlet groove, and the liquid storage grooves are attached to the tobacco tar through the capillary action to form a second liquid bag; the tobacco tar in the second liquid bag permeates into the tar guide cotton of the atomization assembly through the liquid inlet groove and the liquid inlet hole. According to the electronic cigarette, tobacco tar is attached to the liquid storage grooves through the capillary action to form the second liquid bag, the tobacco tar can be continuously supplied to the atomizing core through the second liquid bag and the liquid inlet groove when the electronic cigarette is used in a semi-inverted mode or in an inverted mode, and core burning caused by dry burning is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic cigarette technical field, especially a kind of inverted suction dry burning prevention electronic cigarette. BACKGROUND

[0002] Electronic cigarette is by atomizing core to be heated atomized into smoke for people to smoke, and the oil of electronic cigarette is mostly stored in the oil cavity of oil cup, and in the use process of electronic cigarette, the oil in oil cavity needs to be continuously supplied to atomizing core for heating atomization, with the continuous use of electronic cigarette, the oil in oil cavity will gradually reduce to 1 / 2, 1 / 3, 1 / 4, 1 / 5 of capacity, and when electronic cigarette is inclined, the oil in oil cavity cannot be supplied to atomizing core, for example, when consumer uses electronic cigarette in the scene of watching TV, office, meeting, etc., the consumer often appears to be inadvertently backward, and the electronic cigarette for suction is in the state of inclination, half-inverted or even inverted, the oil will flow to the other end of oil cavity and be disconnected with atomizing core, and the atomizing core will be dry-burned due to lack of oil, which seriously affects the smoking experience of consumer, and also easily leads to atomizing core burnout.

[0003] Therefore, it is necessary to design an electronic cigarette structure, which can prevent dry burning of atomizing core when electronic cigarette is used in half-inverted or inverted state. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problems in the prior art, the utility model provides an inverted suction dry burning prevention electronic cigarette.

[0005] The utility model provides an inverted suction dry burning prevention electronic cigarette, which comprises a cartridge, a vaporization cavity and an oil cavity are arranged in the cartridge, an atomizing assembly is arranged in the vaporization cavity, the oil cavity and the vaporization cavity are separated by an atomizing cover, an air passage is arranged in the atomizing cover and connects the suction nozzle and the vaporization cavity, the atomizing cover is provided with a liquid inlet hole which connects the oil cavity and the vaporization cavity, an oil inlet groove is arranged on the outer circumference of the atomizing cover and communicates with the liquid inlet hole, the oil inlet groove is arranged on the side of the oil cavity away from the suction nozzle, a plurality of liquid storage grooves are arranged on the outer circumference of the oil inlet groove, the liquid storage grooves communicate with the oil inlet groove, the oil in the liquid storage grooves is attached to the oil inlet groove by capillary action to form a second liquid pocket, and the oil in the second liquid pocket penetrates into the oil guide cotton of the atomizing assembly through the oil inlet groove and the liquid inlet hole.

[0006] In some embodiments, the inner side wall of the oil inlet groove is concavely provided with a plurality of capillary grooves, the oil between the oil inlet groove and the atomizing cover and the capillary grooves generates capillary action to form a liquid locking structure between the oil cavity and the vaporization cavity, the groove bottom of the capillary groove is divided into a first slope surface and a second slope surface, the first slope surface and the second slope surface form a V-shaped groove bottom of the capillary groove, the first slope surface is parallel to the outer side wall of the atomizing cover at the oil inlet groove, and the second slope surface is inclinedly arranged towards the liquid inlet hole.

[0007] In some embodiments, the liquid inlet groove is trumpet-shaped.

[0008] In some embodiments, the liquid storage groove extends radially outward from the liquid inlet groove, and the bottom of the liquid storage groove is inclined toward the liquid inlet groove.

[0009] In some embodiments, the liquid storage groove is divided into a first liquid storage groove and a second liquid storage groove, the capillary groove is divided into a first capillary groove and a second capillary groove, the first liquid storage groove is connected to the liquid inlet groove through the oil guide groove, the second liquid storage groove and the second capillary groove are separated by a block, the block is provided with an overflow groove on one side, and the second liquid storage groove and the second capillary groove are connected through the overflow groove.

[0010] In some embodiments, the cartridge comprises an oil cup, a support, and oil sealing silica gel, the support is provided with oil sealing silica gel between the inner side wall of the oil cup and the atomization cover, the oil sealing silica gel, the atomization cover, and the inner side wall of the oil cup form an oil cavity, the oil sealing silica gel is located at the bottom of the oil cavity, the liquid inlet groove is arranged between the atomization cover and the oil sealing silica gel, and the liquid storage groove is arranged on the oil sealing silica gel.

[0011] In some embodiments, the cartridge comprises an oil cup, a support, and oil sealing silica gel, the support is provided with oil sealing silica gel between the inner side wall of the oil cup and the atomization cover, the support, the oil sealing silica gel, and the atomization cover form an oil cavity, the support is located at the bottom of the oil cavity, the liquid inlet groove is arranged between the support and the atomization cover, and the liquid storage groove is arranged on the support.

[0012] In some embodiments, the support comprises a first support and a second support, the first support and the second support are provided with oil absorbing cotton therebetween, the second support is provided with an air inlet hole, and the air inlet hole is connected to the atomization cavity.

[0013] In some embodiments, the atomization assembly comprises oil guide cotton and an atomization core, the oil guide cotton is sleeved on the atomization core, the atomization core is electrically connected with an electrode, the electrode is fixed on the second support and extends toward the first support, and the electrode is exposed with an electrical connection surface on the end face of the second support.

[0014] In some embodiments, a host is further provided, the host is provided with a clamping groove connected with the cartridge, the bottom of the clamping groove is provided with a spring needle matched with the electrode, the contact of the spring needle is in contact with the electrical connection surface of the electrode for conduction, two pairs of magnets are arranged between the bottom of the clamping groove and the second support, and the cartridge is positioned in the clamping groove through the magnetic attraction of the two pairs of magnets.

[0015] Compared with the prior art, the utility model has the beneficial effects that: multiple liquid storage grooves are attached with tobacco tar to form second liquid capsules through capillary action, the second liquid capsules surround the liquid inlet groove, the second liquid capsules are attached with the tobacco tar near the liquid inlet hole through capillary action and viscosity of the tobacco tar, and the tobacco tar does not flow back and separate when the electronic cigarette is inverted, so that the second liquid capsules can continuously supply the tobacco tar to the atomizing core through the liquid inlet groove when the electronic cigarette is inclined, half-inverted or inverted, the atomizing core is prevented from being burnt out and the product service life is prolonged, and the consumer has a good smoking experience. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the exploded structure schematic view of the cartridge of the embodiment of the application.

[0017] Figure 2 is the cross-sectional structure schematic view of the cartridge of the embodiment of the application.

[0018] Figure 3 is the three-dimensional structure schematic view of the liquid inlet groove, the liquid storage groove and the liquid inlet hole of the embodiment of the application.

[0019] Figure 4 is the three-dimensional structure schematic view of the capillary groove and the liquid storage groove of the embodiment of the application.

[0020] Figure 5 is the three-dimensional structure schematic view of the electronic cigarette of the embodiment of the application.

[0021] Figure 6 is the three-dimensional structure schematic view of the main machine of the embodiment of the application.

[0022] Reference signs: 101, oil cavity; 102, atomization cavity; 103, air channel; 104, suction nozzle; 105, air inlet hole;

[0023] 1, cartridge;

[0024] 2, oil cup;

[0025] 3, atomization cover; 31, liquid inlet hole; 32, first sealing ring;

[0026] 4, atomization assembly; 41, atomizing core; 42, oil guide cotton;

[0027] 5, oil sealing silica gel;

[0028] 6, support; 61, first support; 62, second support; 63, buckle; 64, oil absorption cotton; 65, magnet; 66, electrode; 67, electricity connection surface; 68, second sealing ring;

[0029] 7, liquid inlet groove; 71, first capillary groove; 72, second capillary groove; 73, first slope surface; 74, second slope surface;

[0030] 8, liquid storage groove; 81, first liquid storage groove; 82, second liquid storage groove; 83, oil guide groove; 84, stop block; 85, overflow groove;

[0031] 9, host computer; 91, card slot; 92, spring needle. DETAILED DESCRIPTION

[0032] The specific implementation of the present application will be described with reference to the accompanying drawings.

[0033] Reference Figure 1 , the exploded structural schematic view of the cartridge 1, the cartridge 1 is provided with a liquid storage groove 8 between the oil cavity 101 and the atomizing cover 3, the second liquid bag is formed by the capillary action of the liquid storage groove 8 to adhere to the tobacco tar, in the inclined, semi-inverted, inverted state of the electronic cigarette, the tobacco tar in the second liquid bag can continuously penetrate into the oil guide cotton 42 of the atomizing assembly 4 through the liquid inlet groove 7, preventing the dry burning of the atomizing core 41.

[0034] Reference Figures 1 to 6 An inverted dry burning prevention electronic cigarette, comprising a cartridge 1, the cartridge 1 is provided with an atomizing cavity 102 and an oil cavity 101, the atomizing cavity 102 is provided with an atomizing assembly 4, the oil cavity 101 and the atomizing cavity 102 are separated by an atomizing cover 3, the atomizing cover 3 is provided with an air channel 103 which is communicated with the atomizing cavity 102 and the suction nozzle 104, the atomizing cover 3 is provided with a liquid inlet hole 31 which is communicated with the oil cavity 101 and the atomizing cavity 102, the oil cavity 101 is provided with a liquid inlet groove 7 which is communicated with the liquid inlet hole 31 in the circumferential direction of the atomizing cover 3, the liquid inlet groove 7 is arranged on the side of the oil cavity 101 away from the suction nozzle 104, a plurality of liquid storage grooves 8 are arranged in the circumferential direction of the liquid inlet groove 7, the liquid storage grooves 8 are communicated with the liquid inlet groove 7, the plurality of liquid storage grooves 8 adhere to the tobacco tar to form a second liquid bag by capillary action, the tobacco tar in the second liquid bag penetrates into the oil guide cotton 42 of the atomizing assembly 4 through the liquid inlet groove 7 and the liquid inlet hole 31.

[0035] The inverted dry burning prevention electronic cigarette of the present application, the plurality of liquid storage grooves 8 with a large number and a dense arrangement form a large contact area, increase the adhesion to the tobacco tar, so that the plurality of liquid storage grooves 8 adhere to the tobacco tar to form a second liquid bag by capillary action, the second liquid bag surrounds the liquid inlet groove 7, the second liquid bag adheres to the liquid inlet hole 31 by capillary action and the viscosity of the tobacco tar, so that the tobacco tar does not flow back and separate in the inverted electronic cigarette, ensuring that the second liquid bag can continuously supply the tobacco tar to the atomizing core 41 through the liquid inlet groove 7 in the inclined, semi-inverted, inverted use of the electronic cigarette, avoiding the dry burning of the atomizing core 41 to cause the atomizing core 41 to be burnt out, improving the service life of the product, and ensuring that the consumer has a good smoking experience.

[0036] In order to ensure that the second liquid bag can stably penetrate into the atomizing core 41 through the liquid inlet groove 7, in the present embodiment, reference Figure 3 and Figure 4The inner side wall of the liquid inlet groove 7 is concavely provided with a plurality of capillary grooves. The tobacco tar between the liquid inlet groove 7 and the atomizing cover 3 and the capillary grooves produces capillary action to form a liquid locking structure between the oil cavity 101 and the atomizing cavity 102. The groove bottom of the capillary groove is divided into a first slope surface 73 and a second slope surface 74, which form a V-shaped groove bottom of the capillary groove. The first slope surface 73 is parallel to the outer side wall of the atomizing cover 3 at the liquid inlet groove 7 part. The second slope surface 74 is obliquely arranged towards the liquid inlet hole 31.

[0037] It can be understood that, in this way, the liquid inlet groove 7 has more contact area with the tobacco tar through the capillary grooves, thereby increasing the adhesion of the liquid inlet groove 7 to the tobacco tar. The liquid inlet groove 7 forms a first liquid bag by adhering the tobacco tar through capillary action, thereby forming a liquid locking structure between the oil cavity 101 and the atomizing cavity 102. The first liquid bag always seals the liquid inlet groove 7. During suction, the tobacco tar is guided to flow to the liquid inlet hole 31 through the second slope surface 74. The bubbles generated during suction are guided to enter the oil cavity 101 through the first slope surface 73, thereby maintaining the stability of the air pressure inside and outside the oil cavity 101. The first liquid bag of the liquid inlet groove 7 supplies the tobacco tar to the atomizing core 41 through the liquid inlet hole 31. The second liquid bag supplies the tobacco tar to the first liquid bag. The tobacco tar in the first liquid bag and the second liquid bag can be stably adhered near the liquid inlet hole 31, thereby ensuring that the amount of tobacco tar in the oil cavity 101 is small, and there is enough amount of tobacco tar for the user to smoke when the electronic cigarette is used in a semi-inverted or inverted manner.

[0038] In order to facilitate the tobacco tar in the oil cavity 101 to enter the liquid inlet groove 7, in the embodiment, with reference to Figure 2 , the opening of the liquid inlet groove 7 towards the oil cavity 101 is trumpet-shaped.

[0039] It can be understood that, in this way, the opening gradually increases, which can ensure that the bubbles generated during suction smoothly enter the oil cavity 101 from the liquid inlet groove 7, avoid the bubbles to be retained in the liquid inlet groove 7, and ensure that the tobacco tar smoothly enters the liquid inlet groove 7.

[0040] In order to guide the tobacco tar to the liquid inlet groove 7, in the embodiment, with reference to Figure 2 , the liquid storage groove 8 extends radially outward from the liquid inlet groove 7. The groove bottom of the liquid storage groove 8 is obliquely arranged towards the liquid inlet groove 7.

[0041] It can be understood that, in this way, when the amount of tobacco tar in the oil cavity 101 gradually decreases to be about to be exhausted, the tobacco tar in the liquid storage groove 8 can flow to the liquid inlet groove 7 as much as possible through the oblique groove bottom, thereby avoiding too much tobacco tar to be retained in the liquid storage groove 8 and causing waste of the tobacco tar.

[0042] In order to ensure that the liquid storage groove 8 can smoothly supply the tobacco tar to the liquid inlet groove 7, in the embodiment, with reference to Figure 3 and Figure 4, the liquid storage groove 8 is divided into a first liquid storage groove 81 and a second liquid storage groove 82, the capillary groove is divided into a first capillary groove 71 and a second capillary groove 72, the first liquid storage groove 81 is communicated with the liquid inlet groove 7 through an oil guide groove 83, wherein the first capillary groove 71 is communicated with the corresponding first capillary groove 71 through the oil guide groove 83, the second liquid storage groove 82 and the second capillary groove 72 are separated by a blocking piece 84, one side of the blocking piece 84 is provided with an overflow groove 85, and the second liquid storage groove 82 and the second capillary groove 72 are communicated through the overflow groove 85.

[0043] It can be understood that, in this way, the bottom of the first liquid storage groove 81 is flush with the bottom of the oil guide groove 83, ensuring that all the e-liquid in the first liquid storage groove 81 can flow into the first capillary groove 71 of the liquid inlet groove 7 along the oil guide groove 83, and then be guided into the liquid inlet hole 31 through the first capillary groove 71. The blocking piece 84 between the second liquid storage groove 82 and the second capillary groove 72 blocks the flow of e-liquid from the second liquid storage groove 82 to the second capillary groove 72, so that the flow rate of e-liquid in the second capillary groove 72 is slower. When the electronic cigarette is smoked, the flow rate and flow of e-liquid in the first capillary groove 71 and the second capillary groove 72 are different, and the bubbles generated by smoking can enter the oil cavity 101 along the second capillary groove 72 after entering the liquid inlet hole 31 into the liquid inlet groove 7, ensuring that the bubbles enter the oil cavity 101 smoothly and avoiding the bubbles being retained in the oil inlet groove. Therefore, the oil guide groove 83 and the first capillary groove 71 can smoothly guide the e-liquid into the liquid inlet groove 7. When the amount of e-liquid is not too small, the e-liquid in the liquid storage groove 8 flows into the liquid inlet groove 7 through the overflow groove 85 to supplement the e-liquid to the atomizing core 41.

[0044] In order to set the liquid storage groove 8 and the liquid inlet groove 7, in the embodiment, reference is made to Figures 1 to 4 The cartridge 1 comprises an oil cup 2, a support 6 and an oil sealing silica gel 5. The oil sealing silica gel 5 is arranged between the support 6 and the inner side wall of the oil cup 2 and the atomizing cover 3. The oil sealing silica gel 5, the atomizing cover 3 and the inner side wall of the oil cup 2 form an oil cavity 101. The oil sealing silica gel 5 is located at the bottom of the oil cavity 101. The liquid inlet groove 7 is arranged between the atomizing cover 3 and the oil sealing silica gel 5. The liquid storage groove 8 is arranged on the oil sealing silica gel 5.

[0045] It can be understood that, in this way, the oil sealing silica gel 5 can well seal the connection between the support 6, the oil cup 2 and the atomizing cover 3, ensuring the sealing of the oil cavity 101. The capillary groove of the liquid storage groove 8 and the liquid inlet groove 7 integrally formed on the oil sealing silica gel 5 realizes the anti-dry burning of the reverse pumping.

[0046] In another embodiment, the liquid storage groove 8 and the liquid inlet groove 7 are arranged on the support 6 (not shown in the figure), the cartridge 1 comprises the oil cup 2, the support 6 and the oil sealing silica gel 5, the support 6 is arranged with the oil sealing silica gel 5 between the inner side wall of the oil cup 2 and the atomization cover 3, the support 6, the oil sealing silica gel 5 and the atomization cover 3 and the inner side wall of the oil cup 2 form an oil cavity 101, the support 6 is located at the bottom of the oil cavity 101, the liquid inlet groove 7 is arranged between the support 6 and the atomization cover 3, and the liquid storage groove 8 is arranged on the support 6.

[0047] It can be understood that, in this way, as long as the liquid storage groove 8 and the liquid inlet groove 7 are arranged between the bottom of the oil cavity 101 and the liquid inlet hole 31 of the atomization cover 3, they can play the corresponding roles. In addition to arranging the liquid storage groove 8 and the liquid inlet groove 7 on the oil sealing silica gel 5, the liquid storage groove 8 and the liquid inlet groove 7 can also be arranged on the support 6, the difference being that the oil sealing silica gel 5 and the support 6 are used as the bottom of the oil cavity 101. Of course, in order to ensure the sealing of the oil cavity 101, the oil sealing silica gel 5 is also needed to seal between the support 6, the atomization cover 3 and the inner side wall of the oil cup 2, except that the structure of the oil sealing silica gel 5 is less than the liquid storage groove 8 and the liquid inlet groove 7.

[0048] In order to facilitate assembly, in the embodiment, referring to Figure 1 and Figure 2 , the support 6 comprises a first support 61 and a second support 62, the first support 61 and the second support 62 are arranged with an oil absorbing cotton 64, and the second support 62 is arranged with an air inlet hole 105 which communicates with the atomization cavity 102.

[0049] It should be further pointed out that the oil absorbing cotton 64 is two, one on the side of the first support 61 and one on the side of the second support 62, and the liquid drops of the tobacco tar condensed in the atomization cavity 102 are absorbed through the two oil absorbing cottons 64, so as to avoid flowing out of the electronic cigarette from the air inlet hole 105 and the suction nozzle 104, and to avoid the problem of liquid leakage of the condensed tobacco tar in the atomization cavity 102 when the electronic cigarette is placed.

[0050] It can be understood that, in this way, the support 6 is divided into the first support 61 and the second support 62, and after being processed separately, the first support 61 and the second support 62 are clamped together through the buckle 63, so that two oil absorbing cottons 64 can be clamped between the first support 61 and the second support 62, and the air inlet hole 105 is conveniently formed on the second support 62, thereby reducing the difficulty of injection molding of the support 6.

[0051] In order to realize atomization, in the embodiment, referring to Figure 1 and Figure 2 , the atomization assembly 4 comprises a guide oil cotton 42 and an atomization core 41, the guide oil cotton 42 is sleeved on the atomization core 41, the atomization core 41 is electrically connected with an electrode 66, the electrode 66 is fixed on the second support 62 and extends to the first support 61, and the electrode 66 is exposed with an electric connection surface 67 on the end face of the second support 62.

[0052] It needs to be further explained that two O-shaped first sealing rings 32 are arranged between the atomizing cover 3 and the air channel 103 on the side of the suction nozzle 104, so as to ensure the sealing of the oil cavity 101, and a second sealing ring 68 with a C-shaped cross section is arranged between the second support 62 and the inner wall of the oil cup 2, so as to ensure the air tightness of the atomizing cavity 102 and the air channel 103.

[0053] It can be understood that in this way, the atomizing core 41 is a ceramic atomizing core 41, the oil guiding cotton 42 absorbs the tobacco tar permeating from the liquid inlet hole 31, the oil guiding cotton 42 carries the tobacco tar through the capillary action inside, the atomizing core 41 is electrically connected to the battery of the main machine 9 through the two electrodes 66, and after being heated by electricity, the tobacco tar on the oil guiding cotton 42 is heated and atomized.

[0054] In order to supply power to the atomizing assembly 4, in the embodiment, referring to Figure 5 and Figure 6 , the reverse-pumping dry-burning-preventing electronic cigarette further comprises a main machine 9, the main machine 9 is provided with a clamping groove 91 connected with the cartridge 1, the groove bottom of the clamping groove 91 is provided with a spring needle 92 matched with the electrode 66, the contact of the spring needle 92 is in contact and conduction with the electrically connected surface 67 of the electrode 66, two pairs of magnets 65 are arranged between the groove bottom of the clamping groove 91 and the second support 62, and the cartridge 1 is positioned in the clamping groove 91 by magnetic attraction through the two pairs of magnets 65.

[0055] It can be understood that in this way, the shape of the clamping groove 91 is matched with the lower part of the cartridge 1, the lower part of the cartridge 1 is clamped into the clamping groove 91 and is fixed by magnetic attraction through the two pairs of magnets 65, the suction nozzle 104 part of the cartridge 1 is exposed outside the main machine 9, the spring needle 92 of the main machine 9 is in contact and conduction with the electrode 66, and power is supplied to the working of the atomizing core 41.

[0056] The anti-dry burning electronic cigarette of the embodiment of the application is divided into a cartridge 1 and a main machine 9, the oil cavity 101 of the cartridge 1 stores tobacco tar, the cartridge 1 and the main machine 9 are fixed by magnetic attraction, the main machine 9 supplies power to the cartridge 1, in the use of the electronic cigarette, the atomizing core 41 is powered to heat, the tobacco tar on the oil guide cotton 42 in the atomizing cavity 102 is heated and atomized into smoke, the smoke enters the user's mouth through the airway 103 and the suction nozzle 104, the suction of the electronic cigarette is completed, the liquid inlet groove 7 forms a first liquid capsule by attaching the tobacco tar through the capillary groove, the liquid storage groove 8 forms a second liquid capsule by attaching the tobacco tar through the capillary effect, the second liquid capsule supplies the tobacco tar to the first liquid capsule, the first liquid capsule supplies the tobacco tar to the atomizing core 41, the first liquid capsule and the second liquid capsule will not flow back and be out of contact with the liquid inlet hole 31 when the electronic cigarette is inverted, so that when the tobacco tar of the electronic cigarette is reduced to 1 / 2, 1 / 3, 1 / 4, 1 / 5, even if the electronic cigarette is in an inverted state, enough tobacco tar can be supplied to the atomizing core 41 to continuously suck and use for consumers, and the dry burning and core burning are avoided; the first liquid capsule always seals the liquid inlet groove 7, the gas communication between the oil cavity 101 and the airway 103 is avoided to prevent liquid leakage, at the same time, the force of the oil cavity 101 on the tobacco tar due to the change of the air pressure inside and outside the oil cavity 101 is overcome, and the liquid leakage is further prevented; the bubbles generated during the suction are introduced into the oil cavity 101 through the second capillary groove 72, the bubbles are prevented from being retained in the liquid inlet groove 7, and the tobacco tar is ensured to smoothly enter the liquid inlet hole 31 and the oil guide cotton 42 from the liquid inlet groove 7.

[0057] The above is not intended to limit the technical scope of the application in any way, and any modification, equivalent change and modification made to the above embodiments according to the technical essence of the application still belong to the scope of the technical scheme of the application.

Claims

1. A reverse-pumping dry-burn-preventing electronic cigarette, characterized in that, The cartridge comprises an atomizing cavity and an oil cavity, the atomizing cavity is provided with an atomizing assembly, the oil cavity is separated from the atomizing cavity by an atomizing cover, the atomizing cover is internally provided with an air channel communicating with the atomizing cavity and the suction nozzle, the atomizing cover is provided with a liquid inlet hole communicating with the oil cavity and the atomizing cavity, the oil cavity is provided with a liquid inlet groove in the outer circumferential direction of the atomizing cover and communicating with the liquid inlet hole, the liquid inlet groove is arranged on the side of the oil cavity away from the suction nozzle, a plurality of liquid storage grooves are arranged in the outer circumferential direction of the liquid inlet groove, the liquid storage grooves communicate with the liquid inlet groove, the liquid storage grooves are attached with tobacco tar by capillary action to form a second liquid pocket, and the tobacco tar in the second liquid pocket penetrates into the oil guide cotton of the atomizing assembly through the liquid inlet groove and the liquid inlet hole.

2. The reverse draw anti-burn electronic cigarette of claim 1, wherein, The inner side wall of the liquid inlet groove is concavely provided with a plurality of capillary grooves, the tobacco tar between the liquid inlet groove and the atomizing cover and the capillary grooves generates capillary action to form a liquid locking structure between the oil cavity and the atomizing cavity, the groove bottom of the capillary groove is divided into a first slope and a second slope, the first slope and the second slope form a V-shaped groove bottom of the capillary groove, the first slope is parallel to the outer side wall of the atomizing cover at the liquid inlet groove part, and the second slope is arranged to be inclined to the liquid inlet hole.

3. The reverse draw anti-burn electronic cigarette of claim 1, wherein, The opening of the liquid inlet groove towards the oil cavity is trumpet-shaped.

4. The reverse-draft dry-burn-preventing electronic cigarette according to claim 1, characterized by The liquid storage groove extends radially outward from the liquid inlet groove, and the groove bottom of the liquid storage groove is inclined to the liquid inlet groove.

5. The reverse draw anti-burn electronic cigarette of claim 2, wherein, The liquid storage groove is divided into a first liquid storage groove and a second liquid storage groove, the capillary groove is divided into a first capillary groove and a second capillary groove, the first liquid storage groove communicates with the liquid inlet groove through an oil guide groove, the second liquid storage groove and the second capillary groove are separated by a stop block, one side of the stop block is provided with an overflow groove, and the second liquid storage groove and the second capillary groove communicate through the overflow groove.

6. The reverse-draft dry-burn-preventing electronic cigarette according to claim 1, characterized by The cartridge comprises an oil cup, a support and oil sealing silica gel, the support and the oil sealing silica gel are arranged between the inner side wall of the oil cup and the atomizing cover, the oil sealing silica gel, the atomizing cover and the inner side wall of the oil cup form the oil cavity, the oil sealing silica gel is located at the bottom of the oil cavity, the liquid inlet groove is arranged between the atomizing cover and the oil sealing silica gel, and the liquid storage groove is arranged on the oil sealing silica gel.

7. The reverse-draft dry-burn-preventing electronic cigarette according to claim 1, characterized by, The cartridge comprises an oil cup, a support and oil sealing silica gel, the support and the oil sealing silica gel are arranged between the inner side wall of the oil cup and the atomizing cover, the oil sealing silica gel, the atomizing cover and the inner side wall of the oil cup form the oil cavity, the oil sealing silica gel is located at the bottom of the oil cavity, the liquid inlet groove is arranged between the atomizing cover and the oil sealing silica gel, and the liquid storage groove is arranged on the oil sealing silica gel.

8. The reverse draw anti-burn electronic cigarette of claim 6 or 7, wherein, The support comprises a first support and a second support, the first support and the second support are provided with oil absorbing cotton, and the second support is provided with an air inlet hole communicating with the atomizing cavity.

9. The reverse draw anti-burn electronic cigarette of claim 8, wherein, The atomizing assembly comprises oil guide cotton and an atomizing core, the oil guide cotton is sleeved on the atomizing core, the atomizing core is electrically connected with an electrode, the electrode is fixed on the second support and extends to the first support, and the electrode is exposed with an electrical connection surface on the end face of the second support.

10. The reverse draw anti-burn electronic cigarette of claim 9, wherein, Also include a host, the host is provided with a card slot connected with the smoke bullet, the bottom of the card slot is provided with a spring needle matched with the electrode, the contact of the spring needle is in contact with the electrically connected surface of the electrode, two pairs of magnets are arranged between the bottom of the card slot and the second support, the smoke bullet is positioned in the card slot through the magnetic attraction of the two pairs of magnets.

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