An anti-dry-burning electronic atomization device and an anti-dry-burning method

Abstract

The present invention belongs to the field of new cigarette smoking devices, and particularly relates to an anti-dry-burning electronic atomization device and an anti-dry-burning method. The electronic atomization device includes: an e-liquid storage chamber and an e-liquid amount sensing device; wherein, the e-liquid amount sensing device includes: at least two pairs of sensing electrodes, each pair of sensing electrodes includes two electrodes oppositely arranged on the inner sidewall of the e-liquid storage chamber, and all the electrodes can contact the e-liquid, but all the electrodes do not contact each other; when the e-liquid storage chamber is in a cuboid shape, the at least two pairs of sensing electrodes are arranged on the four sidewalls of the e-liquid storage chamber in the form of planar sensing electrodes. During the process of a user sucking on the electronic atomization device, the smoking device is basically in an inclined state. In this case, the electronic atomization device and the determination method designed by the present invention will not make misjudgments, improving the user experience.

Description

Technical Field

[0001] The invention belongs to the field of novel cigarette smoking articles, and particularly relates to an anti-dry-burning electronic atomization device and an anti-dry-burning method. Background Art

[0002] In recent years, with the development of science and technology and society, people have gradually realized the harm of smoking traditional tobacco to the body, and in some occasions, they have gradually restricted and banned tobacco smoking to avoid certain health risks to the public. However, due to the emergence of e-cigarettes, consumers can meet certain psychological and physiological needs by inhaling atomized smoke, while reducing dependence on traditional tobacco to achieve health goals.

[0003] Currently, electronic cigarette products on the market mainly use electric heating to heat the oil in the atomization chamber and atomize it using heating wires to produce smoke, which enters the consumer's mouth to achieve a smoking experience. Since the oil undergoes a physical change from liquid to gas in this process without chemical changes, the components of the smoke are basically harmless to the human body, so electronic cigarettes are a better smoking cessation substitute on the market.

[0004] However, during the atomization process of the e-liquid, once the amount of e-liquid is reduced to a level that it cannot be absorbed by the atomizer core or the oil-conducting cotton, or the e-liquid is exhausted, the electronic cigarette will experience dry burning, which will seriously reduce the consumer's smoking taste. At the same time, due to the exhaustion of the e-liquid, the temperature of the atomizer core or the oil-conducting cotton will rise rapidly due to the continuous heating of the heating type. When it exceeds a certain temperature point, the material inside the atomizer core or the oil-conducting cotton will undergo a chemical reaction and produce harmful gases, which will inevitably affect the consumer's smoking health. Therefore, anti-dry burning electronic cigarettes have appeared on the market.

[0005] In the process of implementing the present invention, the inventors found that the prior art has at least the following problems:

[0006] 1. Most of the anti-dry burning electronic cigarettes on the market determine whether there is a dry burning phenomenon by detecting abnormal fluctuations in the resistance of the heating wire. There are many reasons for abnormal fluctuations in the resistance of the heating wire, such as changes in the external temperature and changes in the composition of the atomized liquid. Therefore, the misjudgment rate of this detection method is high, and the electronic cigarette will perform anti-dry burning protection multiple times, which will inevitably reduce the consumer's smoking experience.

[0007] 2. Some anti-dry-burning electronic cigarettes perform anti-dry-burning operations by detecting the depletion of e-liquid in the atomization chamber. One method is to suspend a metal sheet in the atomization chamber. The metal sheet and the bottom surface of the atomization chamber serve as two electrodes respectively. By utilizing the conductive effect when the e-liquid contacts both electrodes simultaneously, the resistance value between the two electrodes is detected to judge the change in the e-liquid level in the atomization chamber. When it is detected that the two electrodes are disconnected, it is considered that the e-liquid is exhausted, and the anti-dry-burning protection is activated. Another method is to design two strip-shaped electrodes on the inner walls on both sides of the atomization chamber. Similarly, the resistance value between the two electrodes is detected to judge the change in the e-liquid level in the atomization chamber. When it is detected that the two electrodes are disconnected, it is considered that the e-liquid is exhausted, and the anti-dry-burning protection is activated. These two detection methods can be normally detected when the atomization chamber is placed upright perpendicular to the ground. However, when a user uses an electronic cigarette, the electronic cigarette is usually held in an inclined state by the user's fingers for the user to suck at the mouth end, and the inclination direction is random. In the above two detection methods, when the e-liquid volume is small and the electronic cigarette is in an inclined state, it is very likely that the e-liquid cannot contact both electrodes simultaneously, and the two electrodes are disconnected, which is the same as the resistance state when the e-liquid is exhausted, and the resistance value is infinite. Then the electronic cigarette will perform the anti-dry-burning operation, but this is completely a misjudgment, resulting in the user being unable to perform normal sucking operations. Summary of the Invention

[0008] To solve at least one of the above problems, the present invention is proposed.

[0009] In a first aspect of the present invention, an anti-dry-burning electronic atomization device is provided, and the electronic atomization device includes: an e-liquid storage chamber and an e-liquid amount sensing device;

[0010] Wherein the e-liquid amount sensing device includes: at least two pairs of sensing electrodes, each pair of sensing electrodes includes two electrodes oppositely arranged on the inner side wall of the e-liquid storage chamber, and all electrodes can contact the e-liquid, but all electrodes do not contact each other;

[0011] When the e-liquid storage chamber is in the shape of a cuboid, the at least two pairs of sensing electrodes are arranged on the four side walls of the e-liquid storage chamber in the form of planar sensing electrodes; or,

[0012] When the e-liquid storage chamber is in the shape of a cylinder, the at least two pairs of sensing electrodes are evenly distributed on the four 1 / 4 circumferential side walls of the e-liquid storage chamber in the form of planar sensing electrodes, and the central angle corresponding to each sensing electrode is less than 90°.

[0013] Preferably, a vaporization core for e-liquid is further included in the middle of the e-liquid storage chamber, and the anti-dry-burning electronic atomization device further includes a pair of annular sensing electrodes arranged on the bottom surface of the e-liquid storage chamber, wherein the first annular sensing electrode surrounds the atomization core, and the second annular sensing electrode is arranged on the outer periphery of the first annular sensing electrode.

[0014] When there is no e-liquid atomization core in the e-liquid storage chamber, the first annular induction electrode can also be a planar electrode or a dot electrode.

[0015] Preferably, the anti-dry-burning electronic atomization device further includes a detection circuit configured to detect the electrical parameters of the e-liquid between each pair of induction electrodes.

[0016] Preferably, the electrical parameters of the e-liquid include but are not limited to: the voltage of the e-liquid, the current of the e-liquid, the capacitance of the e-liquid, and the inductance of the e-liquid.

[0017] When each pair of induction electrodes cannot be electrically connected, for example, there is no e-liquid between the electrodes, or the amount of e-liquid is too small for the e-liquid to contact both induction electrodes simultaneously, the electrical parameters such as the voltage, current, capacitance, and inductance of the e-liquid between each pair of induction electrodes will change. For example, the resistance of the e-liquid between each pair of induction electrodes is infinite, and the voltage and current of the e-liquid between each pair of induction electrodes are zero. The specific changes in capacitance and inductance can be obtained by those skilled in the art through actual tests of the specific circuit.

[0018] Preferably, the e-liquid storage chamber further includes an e-liquid atomization core. The bottom of the e-liquid atomization core is provided with an oil inlet hole that is in fluid communication with the e-liquid storage chamber. The bottom ends of the at least two pairs of induction electrodes are at a distance from the bottom surface of the e-liquid storage chamber that is higher than the distance from the lower edge of the oil inlet hole to the bottom surface of the e-liquid storage chamber. Purpose: To determine that the state when the e-liquid is exhausted is the state when the amount of e-liquid decreases to the point where the e-liquid cannot enter the e-liquid atomization core through the oil inlet hole.

[0019] As a preferred technical solution of the present invention, at least one of the planar induction electrodes is replaced by a series of dot induction electrodes distributed at intervals.

[0020] As a preferred technical solution of the present invention, at least one of the planar induction electrodes is replaced by an L-shaped strip-shaped induction electrode or an L-shaped rod-shaped induction electrode. The L-shaped strip-shaped induction electrode has a horizontally connected section and a vertically connected section. The end of the horizontal section contacts the bottom of the inner wall of the e-liquid storage chamber, and the vertical section does not contact the inner wall of the e-liquid storage chamber.

[0021] Preferably, the horizontal section is perpendicular to the inner wall of the e-liquid storage chamber, and the vertical section is parallel to the inner wall of the e-liquid storage chamber.

[0022] Preferably, the middle of the e-liquid storage chamber further includes an e-liquid atomization core. The anti-dry-burning electronic atomization device further includes a pair of annular induction electrodes provided on the bottom surface of the e-liquid storage chamber. The first annular induction electrode surrounds the atomization core, and the second annular induction electrode is provided on the outer periphery of the first annular induction electrode.

[0023] When there is no e - liquid atomization core in the e - liquid storage chamber, the first annular induction electrode can also be a planar electrode or a dot - shaped electrode.

[0024] Preferably, the middle of the e - liquid storage chamber further includes an e - liquid atomization core. An oil inlet hole is provided at the bottom of the e - liquid atomization core and is in fluid communication with the e - liquid storage chamber. The distance from the bottom ends of the at least two pairs of induction electrodes to the bottom surface of the e - liquid storage chamber is higher than the distance from the lower edge of the oil inlet hole to the bottom surface of the e - liquid storage chamber.

[0025] The second aspect of the present invention provides a method for preventing dry burning of an electronic atomization device, which uses the anti - dry - burning electronic atomization device described in the first aspect of the present invention. The method includes the following judgment steps:

[0026] Detect the electrical parameters between the at least two pairs of induction electrodes. According to the change of the electrical parameters of the at least two pairs of induction electrodes, judge whether the e - liquid is exhausted and determine whether to start the anti - dry - burning protection measure.

[0027] Preferably, when it is detected that the resistance between the at least two pairs of induction electrodes is infinite, or when it is detected that the voltage between the at least two pairs of induction electrodes is zero, it is determined that the e - liquid is exhausted and the anti - dry - burning protection measure is started.

[0028] The third aspect of the present invention provides a method for preventing dry burning of an electronic atomization device, which uses the electronic atomization device in the preferred technical solution with dot - shaped induction electrodes described in the first aspect of the present invention. The method includes the following judgment steps:

[0029] As the e - liquid is consumed, detect the electrical parameters of the e - liquid between each pair of oppositely arranged dot - shaped induction electrodes or between a dot - shaped electrode and its opposite planar electrode. According to the change of the electrical parameters between the two pairs of dot - shaped induction electrodes closest to the bottom of the e - liquid storage chamber or between the dot - shaped electrode closest to the bottom of the e - liquid storage chamber and its opposite planar electrode, judge whether the e - liquid is exhausted and determine whether to start the anti - dry - burning protection measure.

[0030] Preferably, as the e - liquid is consumed, detect the resistance or voltage of the e - liquid between each pair of oppositely arranged dot - shaped induction electrodes or between a dot - shaped electrode and its opposite planar electrode;

[0031] When it is detected that the resistance between the two pairs of dot - shaped induction electrodes closest to the bottom of the e - liquid storage chamber or the resistance between the dot - shaped electrode closest to the bottom of the e - liquid storage chamber and its opposite planar electrode is infinite, or when it is detected that the voltage between the two pairs of dot - shaped induction electrodes closest to the bottom of the e - liquid storage chamber or the voltage between the dot - shaped electrode closest to the bottom of the e - liquid storage chamber and its opposite planar electrode is zero, it is determined that the e - liquid is exhausted and the anti - dry - burning protection measure is started.

[0032] The fourth aspect of the present invention provides a method for preventing dry burning of an electronic atomization device, which uses the electronic atomization device in the preferred technical solution including a planar induction electrode and a ring-shaped induction electrode described in the first aspect of the present invention. The method includes the following judgment steps:

[0033] Detect the electrical parameters between at least two pairs of planar induction electrodes and the electrical parameters between a pair of ring-shaped induction electrodes at the bottom of the e-liquid storage chamber. According to the changes in all electrical parameters, judge whether the e-liquid is exhausted and determine whether to activate the dry-burning prevention protection measure.

[0034] Preferably, when the resistance between at least two pairs of planar induction electrodes and the resistance between a pair of ring-shaped induction electrodes at the bottom of the e-liquid storage chamber are all infinite, or when the voltage between at least two pairs of planar induction electrodes and the voltage between a pair of ring-shaped induction electrodes at the bottom of the e-liquid storage chamber are all zero, it is determined that the e-liquid is exhausted and the dry-burning prevention protection measure is activated.

[0035] The design of the ring-shaped induction electrode at the bottom of the e-liquid storage chamber can more accurately reflect the situation where the e-liquid at the bottom of the e-liquid storage chamber is less, the planar induction electrodes on the inner side wall are not submerged, but the ring-shaped induction electrodes at the bottom of the e-liquid storage chamber are already submerged. Because in this case, the e-liquid is not yet exhausted and there is no need to activate the dry-burning prevention protection measure.

[0036] The fourth aspect of the present invention provides a method for preventing dry burning of an electronic atomization device, which uses the electronic atomization device in the preferred technical solution including a dot-shaped induction electrode and a ring-shaped induction electrode described in the first aspect of the present invention. The method includes the following judgment steps:

[0037] As the e-liquid is consumed, detect the electrical parameters of the e-liquid between each pair of dot-shaped induction electrodes arranged opposite to each other. According to the changes in the electrical parameters between the two pairs of dot-shaped induction electrodes closest to the bottom of the e-liquid storage chamber and the electrical parameters between a pair of ring-shaped induction electrodes at the bottom of the e-liquid storage chamber, judge whether the e-liquid is exhausted and determine whether to activate the dry-burning prevention protection measure.

[0038] Preferably, as the e-liquid is consumed, detect the resistance or voltage of the e-liquid between each pair of dot-shaped induction electrodes arranged opposite to each other. When the resistance between the two pairs of dot-shaped induction electrodes closest to the bottom of the e-liquid storage chamber and the resistance between a pair of ring-shaped induction electrodes at the bottom of the e-liquid storage chamber are all infinite, or when the voltage between the two pairs of dot-shaped induction electrodes closest to the bottom of the e-liquid storage chamber and the voltage between a pair of ring-shaped induction electrodes at the bottom of the e-liquid storage chamber are all zero, it is determined that the e-liquid is exhausted and the dry-burning prevention protection measure is activated.

[0039] The e-liquid storage chamber of the present invention can also have other shapes, and its electrode type and setting method are similar to those of the cuboid-shaped and cylindrical e-liquid storage chambers of the present invention. When the e-liquid storage chamber is in the shape of a polyhedron, the at least two pairs of induction electrodes are arranged on all the side walls of the e-liquid storage chamber in the form of planar induction electrodes. When the e-liquid storage chamber is of a special shape, the at least two pairs of induction electrodes only need to be spaced apart and distributed on all the side walls of the e-liquid storage chamber in the form of several planar induction electrodes.

[0040] At least one of the planar induction electrodes on the inner side wall of the e-liquid storage chamber can be replaced with a series of spaced-apart dot-shaped induction electrodes, or can be replaced with a series of spaced-apart vertical strip electrodes.

[0041] The planar induction electrodes on the inner side wall of the e-liquid storage chamber can also be replaced with L-shaped strip induction electrodes or L-shaped rod induction electrodes, etc., that is, to ensure that a part of the induction electrode is in contact with the inner side wall of the e-liquid storage chamber, and the other part is not in contact with the inner side wall of the e-liquid storage chamber.

[0042] Pairs of annular induction electrodes, or pairs of dot-shaped induction electrodes, can be further arranged on the inner bottom surface of the e-liquid storage chamber.

[0043] The setting method of the induction electrodes on the inner side wall of the e-liquid storage chamber is such that: when the e-liquid storage chamber is tilted at any angle less than 90 degrees in any direction, the e-liquid in the e-liquid storage chamber can simultaneously contact at least 1 pair of induction electrodes.

[0044] All the induction electrodes of the present invention are exposed at least partially facing the inner side wall of the e-liquid storage chamber to contact the e-liquid.

[0045] Preferably, the wire diameter of the annular induction electrode can be adjusted, but the preferred wire diameter size is 1 mm. Preferably, the annular induction electrode has a certain thickness, and the preferred thickness is 1 mm.

[0046] Preferably, the voltage applied across the induction electrodes is lower than the human body safety voltage, and there is no safety hazard for consumers during the suction process.

[0047] Preferably, the detection circuit is designed by combining traditional resistors and capacitors, including but not limited to the series and parallel connection methods of multiple resistors, and at the same time, the parallel connection of capacitors is used to ensure the voltage stability of the circuit.

[0048] Due to the different levels of the e-liquid surface and the different placement angles of the smoking device, the contact state between the e-liquid and the induction electrodes is different, which in turn leads to changes in the resistance value of the detection circuit. Through the voltage stabilization characteristics of the capacitor, the stability of the sampled voltage data is maintained. Finally, through data analysis and processing, the amount of e-liquid is calculated, whether the e-liquid is exhausted is judged, and dry-burning protection of the electronic atomization device is carried out according to the result. The dry-burning protection operations include but are not limited to operations such as not being able to start working, vibration reminder, sound reminder, light reminder, etc.

[0049] The specific configuration of the detection circuit is common knowledge or conventional technical means for those skilled in the field of circuit design. The present invention does not provide a specific circuit diagram.

[0050] The above technical solutions can be freely combined on the premise of not being contradictory.

[0051] The present invention has the following beneficial effects:

[0052] The present invention designs an automatic dry-burning protection electronic atomization device for the first time. The e-liquid amount sensing device includes: at least two pairs of induction electrodes. Each pair of induction electrodes includes two electrodes that are arranged opposite to each other on the inner side wall of the e-liquid storage chamber, and all the electrodes can contact the e-liquid, but the electrodes do not contact each other. The arrangement of the induction electrodes on the inner side wall of the e-liquid storage chamber is such that: when the e-liquid storage chamber is tilted at any angle less than 90 degrees in any direction, the e-liquid in the e-liquid storage chamber can simultaneously contact at least one pair of induction electrodes.

[0053] The detection method of the electronic atomization device is: when it is detected that the resistance between at least two pairs of induction electrodes is infinite, it is determined that the e-liquid is exhausted, and the dry-burning protection measures are started. In this way, even when the electronic atomization device is in a randomly tilted state, the e-liquid in the e-liquid storage chamber can simultaneously contact at least one pair of side wall induction electrodes or at least one pair of bottom surface induction electrodes, and the resistance of the e-liquid between at least one pair of side wall induction electrodes or at least one pair of bottom surface induction electrodes is not infinite. Therefore, the electronic atomization device will not perform dry-burning protection operations.

[0054] Only when the e-liquid is actually exhausted in practice, the smoking device of the present invention will be determined to be in the state of e-liquid exhaustion. Compared with the existing smoking devices, the present invention notices for the first time that when the smoking device is tilted, the existing dry-burning protection is very likely to misjudge, and a solution is proposed. During the process of the user sucking the electronic atomization device, the smoking device is basically in a randomly tilted state. In this case, the electronic atomization device and the determination method designed by the present invention will not misjudge, improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a three-dimensional view of the e-liquid storage chamber in Embodiment 1 containing e-liquid (the upper cover of the e-liquid storage chamber is not shown).

[0056] Figure 2 It is a plan view of the bottom surface of the e-liquid storage chamber of Example 2.

[0057] Figure 3 It is a sectional view of the e-liquid storage chamber of Example 3 (the upper cover of the e-liquid storage chamber is not shown).

[0058] Figure 4 It is a perspective view of the e-liquid storage chamber of Example 4 (the upper cover of the e-liquid storage chamber is not shown).

[0059] Figure 5 It is a sectional view of the e-liquid storage chamber of Example 5 (the upper cover of the e-liquid storage chamber is not shown).

[0060] Figure 6 It is a partial sectional view of the e-liquid storage chamber of Example 6 (the upper cover of the e-liquid storage chamber is not shown).

[0061] Figure 7 It is a perspective view of the e-liquid storage chamber of Example 7 (the upper cover of the e-liquid storage chamber is not shown).

[0062] Reference numerals:

[0063] 1. E-liquid storage chamber, 1-1. E-liquid atomization core, 1-2. Oil inlet hole, 2-1. Front side wall electrode, 2-2. Left side wall electrode, 2-3. Rear side wall electrode, 2-4. Right side wall electrode, 2-5. First ring-shaped induction electrode, 2-6. Second ring-shaped induction electrode, 21. First side wall induction electrode, 22. Second side wall induction electrode, 23. Third side wall induction electrode, 24. Fourth side wall induction electrode, 25. Dot-shaped induction electrode, 26. L-shaped strip-shaped induction electrode, 3. E-liquid. Detailed implementation manners

[0064] The content of the present invention will be further described below through specific implementation manners.

[0065] Example 1

[0066] Such as Figure 1 , an anti-dry-burning electronic atomization device, the electronic atomization device includes: an e-liquid storage chamber 1 and an e-liquid amount sensing device;

[0067] The fuel oil amount sensing device includes: two pairs of sensing electrodes. Each pair of sensing electrodes consists of two electrodes oppositely arranged on the inner sidewall of the fuel oil storage chamber 1, and all the electrodes can contact the fuel oil 3, but do not contact each other. The fuel oil storage chamber 1 is in the shape of a cuboid. The two pairs of sensing electrodes are arranged in the form of planar sensing electrodes on the four sidewalls of the fuel oil storage chamber 1, namely the front sidewall electrode 2-1, the left sidewall electrode 2-2, the rear sidewall electrode 2-3, and the right sidewall electrode 2-4. The anti-dry burning electronic atomization device further includes a detection circuit, and the configuration of the detection circuit enables it to detect the resistance of the fuel oil 3 between each pair of sensing electrodes. The specific configuration of the detection circuit is common knowledge or conventional technical means in the field of circuit design. The present invention does not provide a specific circuit diagram.

[0068] A method for preventing an electronic atomization device from dry burning, which uses the anti-dry burning electronic atomization device described in Embodiment 1. When it is detected that the resistances between the two pairs of sensing electrodes are all infinite, it is determined that the fuel oil 3 is exhausted, and the anti-dry burning protection measure is started.

[0069] When the fuel oil storage chamber 1 is placed obliquely, for example, the fuel oil 3 does not contact the left sidewall electrode 2-2 of the fuel oil storage chamber 1, but the fuel oil 3 can still contact the front sidewall electrode 2-1 and the rear sidewall electrode 2-3. The resistance between the left sidewall electrode 2-2 and the right sidewall electrode 2-4 is in an infinite state, but the resistance between the front sidewall electrode 2-1 and the rear sidewall electrode 2-3 is not in an infinite state. At this time, the electronic atomization device of the present invention will not be determined to be in a state of exhausted fuel oil and will not start the anti-dry burning protection measure. Therefore, the electronic atomization device and the method for preventing the electronic atomization device from dry burning of the present invention can prevent misjudgment.

[0070] Embodiment 2

[0071] As Figure 2 , compared with Embodiment 1, the anti-dry burning electronic atomization device further includes a pair of annular sensing electrodes arranged on the bottom surface of the fuel oil storage chamber 1. The first annular sensing electrode 2-5 is a planar sensing electrode with a rectangular bottom surface, and the second annular sensing electrode 2-6 is arranged on the outer periphery of the first annular sensing electrode.

[0072] A method for preventing an electronic atomization device from dry burning, which uses the anti-dry burning electronic atomization device described in Embodiment 2. When it is detected that the resistances between the two pairs of planar sensing electrodes and the resistance between a pair of annular sensing electrodes at the bottom of the fuel oil storage chamber 1 are all infinite, it is determined that the fuel oil is exhausted, and the anti-dry burning protection measure is started.

[0073] The design of the annular induction electrode at the bottom of the e-liquid storage chamber 1 can more accurately reflect the situation where when the amount of e-liquid at the bottom of the e-liquid storage chamber 1 is small, the planar induction electrode on the inner side wall is not submerged, but the annular induction electrode at the bottom of the e-liquid storage chamber 1 is submerged. Because in this case, the e-liquid has not really run out and there is no need to activate the dry-burning prevention protection measure. At this time, the bottom of the e-liquid storage chamber 1 can have an opening, and the e-liquid enters the atomizing component through the opening for atomization.

[0074] Embodiment 3

[0075] As Figure 3 , compared with Embodiment 1, an e-liquid atomization core 1-1 is provided at the center of the e-liquid storage chamber 1. An oil inlet hole 1-2 is provided at the bottom of the e-liquid atomization core 1-1 and is in fluid communication with the e-liquid storage chamber 1. The distance from the bottom ends of the two pairs of induction electrodes to the bottom surface of the e-liquid storage chamber 1 is higher than the distance from the lower edge of the oil inlet hole 1-2 to the bottom surface of the e-liquid storage chamber 1.

[0076] A method for preventing dry burning of an electronic atomization device, which uses the dry-burning prevention electronic atomization device described in Embodiment 3. When it is detected that the resistance between the two pairs of induction electrodes is infinite, it is determined that the e-liquid has run out and the dry-burning prevention protection measure is activated. At this time, the state when it is determined that the e-liquid has run out is the state when the amount of e-liquid decreases to the point where the e-liquid cannot enter the e-liquid atomization core 1-1 through the oil inlet hole 1-2.

[0077] Embodiment 4

[0078] As Figure 4 , a dry-burning prevention electronic atomization device, the electronic atomization device includes: an e-liquid storage chamber 1 and an e-liquid amount sensing device;

[0079] Wherein the e-liquid amount sensing device includes: two pairs of induction electrodes, each pair of induction electrodes includes two electrodes arranged opposite to each other on the inner side wall of the e-liquid storage chamber 1, and all the electrodes can contact the e-liquid, but all the electrodes do not contact each other. The e-liquid storage chamber 1 is in a cylindrical shape. The two pairs of induction electrodes are uniformly distributed on the four 1 / 4 circumferential side walls of the e-liquid storage chamber 1 in the form of planar induction electrodes, namely the first side wall induction electrode 21, the second side wall induction electrode 22, the third side wall induction electrode 23, and the fourth side wall induction electrode 24. And the central angle corresponding to each induction electrode is less than 90°, for example, the central angle corresponding to each induction electrode is 80°.

[0080] An e-liquid atomization core 1-1 is provided at the center of the e-liquid storage chamber 1. An oil inlet hole 1-2 is provided at the bottom of the e-liquid atomization core 1-1 and is in fluid communication with the e-liquid storage chamber 1. The distance from the bottom ends of the two pairs of induction electrodes to the bottom surface of the e-liquid storage chamber 1 is higher than the distance from the lower edge of the oil inlet hole 1-2 to the bottom surface of the e-liquid storage chamber 1.

[0081] A method for preventing dry burning of an electronic atomization device, which uses the anti-dry-burning electronic atomization device described in Embodiment 4. When it is detected that the resistance between the two pairs of induction electrodes is infinite, it is determined that the e-liquid is exhausted, and the anti-dry-burning protection measure is started.

[0082] Embodiment 5

[0083] As Figure 5 , the difference from Embodiment 1 is that each of the planar induction electrodes is replaced by three dot-shaped induction electrodes 25 spaced apart from top to bottom.

[0084] A method for preventing dry burning of an electronic atomization device, which uses the anti-dry-burning electronic atomization device described in Embodiment 5. As the e-liquid is consumed, the resistance of the e-liquid between each pair of relatively arranged dot-shaped induction electrodes is detected. When it is detected that the two resistances between the two pairs of dot-shaped induction electrodes closest to the bottom of the e-liquid storage chamber 1 are infinite, it is determined that the e-liquid is exhausted, and the anti-dry-burning protection measure is started.

[0085] Embodiment 6

[0086] As Figure 6 , the difference from Embodiment 4 is that:

[0087] There is no e-liquid atomization core 1-1 in the center of the e-liquid storage chamber 1.

[0088] Each of the planar induction electrodes is replaced by three dot-shaped induction electrodes 25 spaced apart from top to bottom. The anti-dry-burning electronic atomization device further includes a pair of annular induction electrodes arranged on the bottom surface of the e-liquid storage chamber 1, and the second annular induction electrode 2-6 is arranged on the outer periphery of the first annular induction electrode 2-5. The annular induction electrodes are embedded in the bottom surface of the e-liquid storage chamber 1. The annular induction electrodes can be parallel to the bottom surface of the e-liquid storage chamber 1 or protrude relative to the bottom surface of the e-liquid storage chamber 1.

[0089] A method for preventing dry burning of an electronic atomization device, which uses the anti-dry-burning electronic atomization device described in Embodiment 6. The method includes the following judgment steps:

[0090] As the e-liquid is consumed, the resistance of the e-liquid between each pair of relatively arranged dot-shaped induction electrodes is detected. When it is detected that the resistance between the two pairs of dot-shaped induction electrodes closest to the bottom of the e-liquid storage chamber 1 and the resistance between the pair of annular induction electrodes at the bottom of the e-liquid storage chamber 1 are all infinite, it is determined that the e-liquid is exhausted, and the anti-dry-burning protection measure is started.

[0091] Embodiment 7

[0092] As Figure 7 , an anti-dry-burning electronic atomization device, the electronic atomization device includes: an e-liquid storage chamber 1 and an e-liquid amount sensing device;

[0093] The e-liquid amount sensing device includes: two pairs of sensing electrodes, each pair of sensing electrodes being two electrodes oppositely arranged on the inner sidewall of the e-liquid storage chamber 1, and all the electrodes can contact the e-liquid 3, but all the electrodes do not contact each other.

[0094] The e-liquid storage chamber 1 is in the shape of a cylinder, and the two pairs of sensing electrodes are uniformly distributed on the four 1 / 4 circumferential sidewalls of the e-liquid storage chamber 1 in the form of L-shaped strip sensing electrodes 26. The L-shaped strip sensing electrode 26 has a horizontally arranged section and a vertically arranged section integrally connected. The end of the horizontally arranged section contacts the bottom of the inner sidewall of the e-liquid storage chamber, and the vertically arranged section does not contact the inner wall of the e-liquid storage chamber. The horizontally arranged section is perpendicular to the inner wall of the e-liquid storage chamber, and the vertically arranged section is parallel to the inner wall of the e-liquid storage chamber.

[0095] The L-shaped strip sensing electrode 26 has a certain width, so that when the e-liquid storage chamber is tilted at any angle less than 90 degrees in any direction, the e-liquid in the e-liquid storage chamber can contact at least one pair of sensing electrodes simultaneously.

[0096] The dry-burning prevention electronic atomization device further includes a detection circuit, and the detection circuit is configured to be able to detect the voltage of the e-liquid 3 between each pair of sensing electrodes. The specific configuration of the detection circuit is common knowledge or conventional technical means in the field of circuit design. The present invention does not provide a specific circuit diagram.

[0097] A method for preventing dry burning of an electronic atomization device, which uses the dry-burning prevention electronic atomization device described in Embodiment 7, the method includes the following judgment steps:

[0098] As the e-liquid is consumed, detect the voltage of the e-liquid between each pair of oppositely arranged L-shaped strip sensing electrodes 26. When it is detected that the voltages of the e-liquid 3 between the two pairs of L-shaped strip sensing electrodes 26 are both zero, it is determined that the e-liquid is exhausted, and the dry-burning prevention protection measure is started.

[0099] As described above, the above are only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An anti-dry-burning electronic cigarette, characterized in that, The electronic cigarette includes: an e-liquid storage chamber and an e-liquid amount sensing device; Wherein, the e-liquid amount sensing device includes: at least two pairs of sensing electrodes, each pair of sensing electrodes includes two electrodes oppositely arranged on the inner sidewall of the e-liquid storage chamber, and all the electrodes can contact the e-liquid, but all the electrodes do not contact each other; When the e-liquid storage chamber is in the shape of a cuboid, the at least two pairs of sensing electrodes are arranged on the four sidewalls of the e-liquid storage chamber in the form of planar sensing electrodes; or, When the e-liquid storage chamber is in the shape of a cylinder, the at least two pairs of sensing electrodes are evenly distributed on the four 1 / 4 circumferential sidewalls of the e-liquid storage chamber in the form of planar sensing electrodes, and the central angle corresponding to each sensing electrode is less than 90°; The middle of the e-liquid storage chamber further includes an e-liquid atomization core, and the anti-dry-burning electronic cigarette further includes a pair of annular sensing electrodes arranged on the bottom surface of the e-liquid storage chamber, wherein the first annular sensing electrode surrounds the atomization core, and the second annular sensing electrode is arranged on the outer periphery of the first annular sensing electrode; The bottom of the e-liquid atomization core is provided with an oil inlet hole in fluid communication with the e-liquid storage chamber, and the distance from the bottom ends of the at least two pairs of sensing electrodes to the bottom surface of the e-liquid storage chamber is higher than the distance from the lower edge of the oil inlet hole to the bottom surface of the e-liquid storage chamber.

2. The anti-dry-burning electronic cigarette according to claim 1, wherein Wherein at least one of the planar sensing electrodes is replaced by a series of dot-shaped sensing electrodes distributed at intervals.

3. The dry-burning prevention electronic cigarette according to claim 1, wherein Wherein at least one of the planar sensing electrodes is replaced by an L-shaped strip-shaped sensing electrode or an L-shaped rod-shaped sensing electrode, the L-shaped strip-shaped sensing electrode has a horizontally arranged section and a vertically arranged section integrally connected, the end of the horizontally arranged section contacts the bottom of the inner sidewall of the e-liquid storage chamber, and the vertically arranged section does not contact the inner wall of the e-liquid storage chamber.

4. The dry-burning prevention electronic cigarette according to any one of claims 1-3, characterized in that, The anti-dry-burning electronic cigarette further includes a detection circuit, and the detection circuit is configured to be able to detect the electrical parameters of the e-liquid between each pair of sensing electrodes.

5. The dry-burning prevention electronic cigarette according to claim 4, characterized in that, The electrical parameters of the e-liquid include: the voltage of the e-liquid, the current of the e-liquid, the capacitance of the e-liquid or the inductance of the e-liquid.

6. The dry-burning prevention electronic cigarette according to claim 3, characterized in that, The distance from the lowest end of the L-shaped strip-shaped sensing electrode to the bottom surface of the e-liquid storage chamber is higher than the distance from the lower edge of the oil inlet hole to the bottom surface of the e-liquid storage chamber.

7. A method for preventing dry burning of an electronic cigarette, which uses the anti-dry-burning electronic cigarette according to claim 1, characterized in that the method includes the following judgment steps: Detect the electrical parameters between the at least two pairs of planar sensing electrodes and the electrical parameters between a pair of annular sensing electrodes at the bottom of the e-liquid storage chamber, and judge whether the e-liquid is exhausted according to the changes of all the electrical parameters, and determine whether to start the anti-dry-burning protection measure.

8. The method for preventing dry burning of an electronic cigarette according to claim 7, wherein When it is detected that the resistances between the at least two pairs of planar sensing electrodes and the resistance between a pair of annular sensing electrodes at the bottom of the e-liquid storage chamber are all infinite, or when it is detected that the voltages between the at least two pairs of planar sensing electrodes and the voltage between a pair of annular sensing electrodes at the bottom of the e-liquid storage chamber are all zero, then it is judged that the e-liquid is exhausted and the anti-dry-burning protection measure is started.

9. A method for preventing dry burning of an electronic cigarette, which uses the anti-dry-burning electronic cigarette described in claim 2, characterized in that the method includes the following judgment steps: as the e-liquid is consumed, detect the electrical parameters of the e-liquid between each pair of dot-shaped induction electrodes arranged opposite to each other, and judge whether the e-liquid is exhausted according to the changes in the electrical parameters between the two pairs of dot-shaped induction electrodes closest to the bottom of the e-liquid storage chamber and the electrical parameters between a pair of ring-shaped induction electrodes at the bottom of the e-liquid storage chamber, and determine whether to activate the anti-dry-burning protection measure.

10. The method for preventing dry burning of an electronic cigarette according to claim 9, characterized in that, As the e-liquid is consumed, detect the resistance or voltage of the e-liquid between each pair of dot-shaped induction electrodes arranged opposite to each other. When the resistances of the two pairs of dot-shaped induction electrodes closest to the bottom of the e-liquid storage chamber and the resistance of a pair of ring-shaped induction electrodes at the bottom of the e-liquid storage chamber are all infinite, or when the voltages of the two pairs of dot-shaped induction electrodes closest to the bottom of the e-liquid storage chamber and the voltage of a pair of ring-shaped induction electrodes at the bottom of the e-liquid storage chamber are all zero, then judge that the e-liquid is exhausted and activate the anti-dry-burning protection measure.

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