Electronic cigarette tar control method, atomizing core and electronic cigarette

Abstract

The invention discloses an electronic cigarette oil control method. The method comprises the following steps that the threshold temperature of a measuring wire is set to be T1, and the resistance R1 of the measuring wire is monitored; calculating the temperature T2 of the measuring wire through the R1; when T2 is smaller than T1, the second heating wire is controlled to heat at the first heating power; when T2 is greater than or equal to T1, controlling the second heating wire to heat at second heating power; wherein the first heating power is greater than the second heating power. According to the oil control method for the electronic cigarette, the resistance of the measuring wire is monitored in real time, the temperature of the measuring wire is calculated, the temperature of the second heating wire is calculated, the smoke concentration at the first opening or the low temperature is increased, the smoke concentration of the electronic cigarette is uniform, meanwhile, oil leakage can be avoided, and the taste of the electronic cigarette is improved. The atomizing core is of a double-layer structure, oil can be controlled, and oil leakage can be prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to an electronic cigarette device, in particular to an electronic cigarette oil control method, an atomizing core and an electronic cigarette. BACKGROUND

[0002] The atomizing core in the electronic cigarette is the core component of the electronic cigarette, and the atomizing core usually changes the tobacco tar into smoke by heating the tobacco tar. However, the existing electronic cigarette has various problems, for example, the atomizing core often has the problem of oil leakage due to various reasons, which causes the tobacco tar to be wasted, and even the electronic cigarette is damaged. Some atomizing cores do not have the problem of oil leakage, but the smoke output efficiency is very low, especially the first puff has almost no strong taste. Therefore, how to solve the problem of oil leakage of the electronic cigarette and ensure the taste of the electronic cigarette has been a problem that the technical personnel in the industry have been thinking about. SUMMARY

[0003] One of the purposes of the present application is to provide an electronic cigarette oil control method to solve the technical problems of oil leakage and poor taste of the electronic cigarette.

[0004] To solve the above problems, the technical scheme provided by the present application is to provide an electronic cigarette oil control method, and an atomizing core is provided, which includes a first oil control layer and a second oil control layer, and a second heating wire and a measuring wire are arranged on the second oil control layer. The threshold temperature of the measuring wire is set to T1, and the steps include: monitoring the resistance R1 of the measuring wire; calculating the temperature T2 of the measuring wire through R1; when T2 is less than T1, the second heating wire is controlled to heat at a first heating power; when T2 is greater than or equal to T1, the second heating wire is controlled to heat at a second heating power; wherein the first heating power is greater than the second heating power; wherein the atomizing core is made of glass.

[0005] The oil control method of the electronic cigarette of the present application calculates the temperature of the measuring wire to estimate the temperature of the second heating wire by monitoring the resistance of the measuring wire in real time, so that when the second heating wire is at a lower temperature due to the external environment, the tobacco oil is less likely to enter the inside of the atomizing core, at which time the first heating power is used for rapid heating to enable the tobacco oil above the second oil control layer to quickly pass through the second oil control layer and enter the inside of the atomizing core, thereby improving the smoke density of the first puff or at a low temperature and improving the taste of the electronic cigarette; when the temperature of the second heating wire is raised after heating, the tobacco oil quickly enters the inside of the atomizing core, at which time the second heating power is used for work, that is, the original heating power is reduced to control the oil passing speed of the second oil control layer and prevent the tobacco oil from entering the atomizing core too quickly to cause oil leakage. It is worth noting that the first heating power and the second heating power can be a fixed value or a series of changing values. In some cases, the second heating power can be 0, that is, heating is stopped. The oil control method of the electronic cigarette of the present application monitors the temperature of the second oil control layer itself, which can effectively avoid the problem of inaccurate or lagging temperature measurement of other parts or positions; in addition, the temperature is determined by using the resistance change of the measuring wire at different temperatures, which can effectively avoid the temperature measurement error of other temperature measurement components. The second heating wire and the measuring wire of the present application can be two independent metal wires or the same heating wire. The atomizing core of the present application is made of glass, and the pore size of the glass is uniformly controllable and has good consistency, which cannot be achieved by other materials.

[0006] Preferably, after calculating T2, the following steps are further included: calculating the value t of T2-T1, and adjusting the heating power of the second heating wire based on t. According to the difference t between T2 and T1, the heating power of the second heating wire is adjusted to effectively improve the oil control accuracy of the second oil control layer and avoid the problems of oil leakage or smoke not coming out due to too low temperature.

[0007] More preferably, a controller is provided, which is electrically connected to the atomizing core, and the adjustment of the heating power of the second heating wire based on t is performed by adjusting the output duty cycle of the controller. By adjusting the output duty cycle, the heating power of the second heating wire can be quickly adjusted without interfering with the real-time monitoring of the resistance R1 of the second heating wire.

[0008] More preferably, the value of t is inversely proportional to the heating power of the second heating wire. The greater the value of t, the lower the heating power of the second heating wire, until it is 0. The inverse proportion can be linear or nonlinear. The inverse proportion of the two can accurately control the oil control accuracy of the second oil control layer, control the smoke density to improve the consistency of the taste, and also control the oil intake to prevent oil leakage.

[0009] Preferably, the upper threshold temperature of the measuring wire is set as T3, and the second heating power is 0 when T2 is greater than or equal to T3. By setting the upper threshold temperature T3 of the second heating wire, T2 does not need to be compared with T1 or calculated, and when T2 reaches T3, the second heating wire is directly controlled to stop heating, preventing calculation and other steps from causing control delay, reducing control accuracy, and increasing the risk of oil leakage.

[0010] Preferably, the value of T1 is 20-30℃. Setting T1 to a certain value in the normal temperature range helps to adjust the heating power of the second heating wire according to different power output rules when judging T2. T1 serves as an adjustment threshold for the power output rule, so that when T2 exceeds the normal temperature, the heating power of the second heating wire is timely reduced, and when T2 is lower than the normal temperature by a certain value, the heating power of the second heating wire is increased.

[0011] More preferably, the value of T3 is 300-500℃. When T3 is set below 300℃, the heating temperature is not enough because the e-liquid is stopped from heating before the e-liquid is completely heated to generate smoke, and when T3 is set above 500℃, the e-liquid enters too quickly, and a large amount of e-liquid enters after the heating is stopped, which is very prone to oil leakage.

[0012] Another object of the present application is to provide an atomizing core to solve the technical problems of oil leakage and poor taste of the electronic cigarette.

[0013] To solve the above problems, the technical solution of the present application is to provide an atomizing core comprising a second oil control layer, the second oil control layer being provided with a second heating wire and a measuring wire.

[0014] The atomizing core of the present application controls the amount of heated e-liquid by setting a second oil control layer on the atomizing cavity and controlling the oil feeding speed of the second oil control layer with the heating power of the second heating wire, which can effectively and accurately control the concentration of atomized smoke and avoid excessive e-liquid feeding and oil leakage.

[0015] Preferably, the atomizing core further comprises a first oil control layer provided with a first heating wire, the first oil control layer being in close proximity to the second oil control layer, and the first oil control layer being located above the second oil control layer. The first oil control layer can prevent e-liquid from entering the atomizing core before the electronic cigarette is started, and when the electronic cigarette is started, the first heating wire heats and breaks the oil film, allowing the first oil control layer to feed oil, which can effectively prevent e-liquid from seeping into the atomizing core before the electronic cigarette is started, thereby preventing oil leakage.

[0016] Another object of the present application is to provide an electronic cigarette to solve the technical problems of oil leakage and poor taste of the electronic cigarette.

[0017] To achieve the above object, the technical scheme of the present application is: to provide an electronic cigarette applying any one of the above electronic cigarette oil control methods and the above atomizing core.

[0018] The electronic cigarette of the present application, by applying the above atomizing core and the above electronic cigarette oil control method, makes the atomizing core free of tobacco tar before starting, avoiding the situation of oil leakage of the electronic cigarette when not starting; in addition, by controlling the speed of tobacco tar entering through the second oil control layer, the concentration of the first puff of smoke can be effectively improved, and the taste can be improved; it can also avoid the situation of too much or too fast tobacco tar entering in the subsequent puffing process, resulting in inconsistent smoke concentration and oil leakage. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is an exploded schematic view of the atomizing core 1000 of the first embodiment of the present application; Figure 2 is an exploded schematic view of the atomizing core 1000 of the first embodiment of the present application from another angle; Figure 3 is a front view schematic view of the atomizing core 1000 of the first embodiment of the present application; Figure 4 is an exploded schematic view of the atomizing core 2000 of the second embodiment of the present application; Figure 5 is an exploded schematic view of the electronic cigarette 10 of the third embodiment of the present application; Figure 6 is a logic step schematic view of the electronic cigarette oil control method of the fourth embodiment of the present application; LEGEND: 1000, 2000-atomizing core; 1100, 2100-first oil control layer; 1110, 2110-first heating wire; 1120, 2120-first oil passing hole; 1200, 2200-second oil control layer; 1210, 2210-second heating wire; 2211-measuring wire; 1220, 2220-second oil passing hole; 1230-conductive column; 1300-base layer; 1310-third heating wire; 1320-atomizing cavity; 10-electronic cigarette; 11-muffler; 12-tobacco tar storage; 13-air inlet. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] It should be noted that if the embodiments of the present application involve directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directionality indication also changes accordingly.

[0022] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0023] Embodiment one: As shown in the figure, wherein Figures 1-3 is an exploded schematic view of the atomizing core 1000 of the embodiment one of the present application; Figure 1 is another angle of the exploded schematic view of the atomizing core 1000 of the embodiment one of the present application; Figure 2 is a front view schematic view of the atomizing core 1000 of the embodiment one of the present application. Figure 3

[0024] The embodiment of the present application proposes an atomizing core 1000, which comprises a first oil control layer 1100, a second oil control layer 1200 and a base layer 1300. The first oil control layer 1100 is located at the uppermost layer and will first contact the tobacco tar, and the second oil control layer 1200 is located below the first oil control layer 1100 and abuts against the first oil control layer 1100. The second oil control layer 1200 is mainly used for heating the tobacco tar. The base layer 1300 is located below the second oil control layer 1200 and is mainly used for heating and atomizing the residual tobacco tar to prevent oil leakage.

[0025] ​The lower surface of the first oil control layer 1100 is paved with the first heating wire 1110, which is a titanium wire. In other embodiments, the first heating wire can also be other heating wires. The first oil control layer 1100 is provided with the first oil passing hole 1120, which is used to let the tobacco tar pass through the first oil control layer 1100. When the first heating wire 1110 does not heat, the tobacco tar will be blocked above the first oil control layer 1100 due to the surface tension of the tobacco tar. The first oil passing hole 1120 has a diameter of 10 μm. In other embodiments, the diameter of the first oil passing hole can also be 15 μm or 20 μm to adapt to the surface tension of the tobacco tar.

[0026] The lower surface of the second oil control layer 1200 is paved with the second heating wire 1210, which is the measuring wire in this embodiment. The second heating wire 1210 is a titanium wire. In other embodiments, the second heating wire can also be other heating wires. The second oil control layer 1200 is provided with the second oil passing hole 1220, which is used to let the tobacco tar pass through the second oil control layer 1200. The second oil passing hole 1220 has a tapered hole with a diameter of 30 μm at the upper end and 20 μm at the lower end, so as to sufficiently control the flow rate and sufficiently heat the tobacco tar when passing through. The second oil control layer 1200 is provided with the conductive column 1230, which passes through the second oil control layer 1200 and is electrically connected with the first heating wire 1110.

[0027] The lower surface of the base layer 1300 is provided with the third heating wire 1310. The base layer 1300 and the second oil control layer 1200 form the atomization cavity 1320. The third heating wire 1310 is used to sufficiently atomize the residual tobacco tar in the atomization cavity 1320.

[0028] The atomization core 1000 in this embodiment atomizes the tobacco tar through three layers of heating, which controls the entry of the tobacco tar and prevents the excessive entry and leakage of the tobacco tar. The resistance of the second heating wire 1210 is measured to calculate the ambient temperature, and the heating power of the second heating wire 1210 is controlled, so as to effectively control the atomization amount of the tobacco tar, ensure the purity of each puff, and prevent the leakage of the tobacco tar.

[0029] Embodiment Two As shown in FIG. 2, it is an exploded structural schematic view of the atomization core 2000 in the second embodiment of the present application. Figure 4

[0030] ​The atomizing core 2000 of the embodiment comprises a first oil control layer 2100 and a second oil control layer 2200. The first oil control layer 2100 is located above the second oil control layer 2200, and the second oil control layer 2200 is close to the first oil control layer 2100. The first oil control layer 2100 will first contact the tobacco tar. The first oil control layer 2100 is used to block the tobacco tar in a non-heating state, and allow the tobacco tar to pass through the first oil control layer 2100 when heated. The second oil control layer 2200 is used to heat and atomize the tobacco tar.

[0031] A first heating wire 2110 is arranged on the lower surface of the first oil control layer 2100. A first oil passing hole 2120 is arranged on the first oil control layer 2100, which is used to allow the tobacco tar to pass through the first oil control layer 2100 when the oil film is broken by the heating of the first heating wire 2110. The aperture of the first oil passing hole 2120 is 12 μm. The resistance of the first heating wire 2110 is 5 Ω.

[0032] A second heating wire 2210 and a measurement wire 2211 are arranged on the lower surface of the second oil control layer 2200. The measurement wire 2211 is arranged on one side of the second heating wire 2210. A plurality of second oil passing holes 2220 are arranged on the second oil control layer 2200. The second oil passing holes 2220 are inverted conical, the upper part of the second oil passing holes 2220 has a diameter of 30 μm, and the lower part has a diameter of 20 μm. The resistance of the second heating wire 2210 is 0.8 Ω. In other embodiments, the resistance of the second heating wire can also be 1 Ω or 1.2 Ω.

[0033] The atomizing core 2000 of the embodiment has the same effect as the atomizing core 1000 of the first embodiment of the application, and the structure is simplified. By controlling the heating power of the second heating wire 2210, oil leakage can be prevented, and the tobacco tar can be fully atomized.

[0034] Embodiment three: As shown in Figure 5 , it is an exploded structural schematic view of the electronic cigarette 10 of the third embodiment of the application.

[0035] The electronic cigarette 10 of the application comprises a mouthpiece 11, a tobacco tar storage 12, and an air inlet 13. The tobacco tar storage 12 is provided below with the atomizing core 2000 of the second embodiment of the application. The mouthpiece 11 is connected to the lower surface of the atomizing core 2000 and is also connected to the air inlet 13. The electronic cigarette 10 further comprises a controller (not shown) which is electrically connected to the atomizing core 2000 and is used to control the heating power of the atomizing core 2000.

[0036] The electronic cigarette 10 of the embodiment can control the oil leakage speed of the tobacco tar by using the atomizing core 2000, so as to ensure the concentration of the smoke of each puff and prevent the tobacco tar from leaking out of the air inlet 13.

[0037] Embodiment four: As shown in Figure 6Fig. 1 shows a schematic diagram of the logic steps of the method for controlling the oil of the electronic cigarette according to an embodiment of the present application.

[0038] Provided herein is the electronic cigarette 10 according to the third embodiment of the present application and the atomizing core 2000 according to the second embodiment of the present application. The threshold temperature T1 of the measuring wire 2211 is set to be 25 degrees Celsius and the upper threshold temperature T3 is set to be 300 degrees Celsius in the electronic cigarette 10. In other embodiments, T1 can also be 20 degrees Celsius or 30 degrees Celsius and T3 can also be 400 degrees Celsius or 500 degrees Celsius.

[0039] The method for controlling the oil of the electronic cigarette according to the present application comprises the following steps: 101. Monitor the resistance R1 of the measuring wire 2211.

[0040] The resistance R1 of the measuring wire 2211 can be monitored in various ways. In the embodiment of the present application, a constant current source is provided to the measuring wire 2211, and then the voltage across the measuring wire 2211 is measured, and the resistance R1 can be calculated according to the formula R=U / I.

[0041] Suppose the resistance R1 of the measuring wire 2211 is measured to be 0.972 ohms for the first time. The following steps are performed.

[0042] 102. Calculate the temperature T2 of the measuring wire 2211 according to R1.

[0043] The resistance of the titanium wire at T0=25 degrees Celsius is R0=1Ω, and the resistance temperature coefficient TCR of the titanium wire between -50℃ and 300℃ is 4×10 3 ppm / ℃, wherein TCR=[(R1-R0) / (R1×(T2-T0)]×10 6 .

[0044] Therefore, T2=[(R1-R0) / TCR*R0]×10 6 +T0.

[0045] The specific numerical values are substituted into the formula to calculate that when R1 is 0.972 ohms, T2 is 18 degrees Celsius.

[0046] 103. Determine whether T2 is less than T1.

[0047] In this embodiment, T2 is determined to be 18 degrees Celsius, which is less than T1 of 25 degrees Celsius. Therefore, step 104 is performed.

[0048] 104. The second heating wire 2210 is heated at the first heating power.

[0049] The first heating power in this embodiment is full power, i.e. 15W. The first heating wire 2110 is heated at a constant power of 15W.

[0050] Meanwhile, the resistance R1 of the measuring wire 2211 is monitored and measured. That is, step 101 is executed in a loop. As the temperature of the second heating wire 2210 increases, the resistance of the measuring wire 2211 also increases, and finally increases to 1 ohm, T2=T1, and then step 105 is executed.

[0051] 105. Determine whether T2 is greater than or equal to T3.

[0052] At the beginning, T2 is certainly less than T3, and then step 107 is executed. 107. Calculate the value t of T2-T1.

[0053] The initial value of t is 0, and then step 108 is executed.

[0054] 108. Adjust the second heating power of the second heating wire 2210 based on t.

[0055] The second heating wire 2210 is heated at the second heating power 2W, and as the value of t increases, the duty cycle output by the controller is adjusted to continuously reduce the second heating power.

[0056] In the loop process, when T2 is greater than or equal to T3 determined in step 105, step 106 is started.

[0057] 106. The heating power of the first heating wire 2110 and the second heating wire 2210 is adjusted to 0.

[0058] That is, the heating of the first heating wire 2110 and the second heating wire 2210 is stopped, the temperature is gradually reduced by the first oil control layer 2100 to reduce the oil intake, and finally the oil intake is sealed. When the temperature of T2 decreases, the above process is repeated again to continuously adjust the oil intake to control the smoke concentration.

[0059] In other embodiments, when the set temperature range exceeds the linear change range of the resistance temperature coefficient of the measuring wire, a compensation coefficient needs to be introduced to compensate for the calculated temperature value.

[0060] The electronic cigarette oil control method of the present application calculates the temperature of the measuring wire 2211 by monitoring and measuring the resistance of the measuring wire 2211 in real time, and then controls the heating power of the second heating wire 2210 by measuring the temperature of the measuring wire 2211, accurately controls the oil intake and smoke concentration of the tobacco tar, ensures the uniformity of the smoke concentration of each puff, especially the first puff, and effectively prevents the industry problem of oil leakage.

[0061] The above description is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A method for controlling oil in electronic cigarettes, characterized in that, Atomizing core is provided, the atomizing core including a first oil-controlling layer and a second oil-controlling layer, the second oil-controlling layer being provided with a second heating wire and a measuring wire, and the threshold temperature of the measuring wire being set to T1, comprising the following steps: Monitor the resistance R1 of the measuring wire; The temperature T2 of the measuring wire is calculated using R1; When T2 is less than T1, the second heating wire is controlled to heat with the first heating power; When T2 is greater than or equal to T1, the second heating wire is controlled to heat with the second heating power; The first heating power is greater than the second heating power; The atomizing core is made of glass.

2. The electronic cigarette oil control method as described in claim 1, characterized in that, After calculating T2, the following steps are also included: calculating the value t of T2-T1, and adjusting the heating power of the second heating wire based on t.

3. The electronic cigarette oil control method as described in claim 2, characterized in that, A controller is provided, which is electrically connected to the atomizing core, and the heating power of the second heating wire is adjusted based on t by adjusting the output duty cycle of the controller.

4. The electronic cigarette oil control method as described in claim 2, characterized in that, The value of t is inversely proportional to the heating power of the second heating wire.

5. The electronic cigarette oil control method as described in claim 1, characterized in that, The upper limit threshold temperature of the measuring wire is set to T3. When T2 is greater than or equal to T3, the second heating power is zero.

6. The electronic cigarette oil control method as described in claim 1, characterized in that, The value of T1 is 20℃-30℃.

7. The electronic cigarette oil control method as described in claim 5, characterized in that, The value of T3 is 300℃-500℃.

8. An atomizing core, characterized in that, It includes a second oil control layer, on which a second heating wire and a measuring wire are provided.

9. The atomizing core as described in claim 8, characterized in that, It also includes a first oil-controlling layer, on which a first heating wire is disposed, the first oil-controlling layer is close to the second oil-controlling layer, and the first oil-controlling layer is located above the second oil-controlling layer.

10. An electronic cigarette, characterized in that, The method for controlling oil in electronic cigarettes as described in any of claims 1-7 and any of the atomizing cores as described in claim 8 or 9 are applied.

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