Atomizer and aerosol generating device

Abstract

The utility model provides an atomizer and an aerosol generating device, the aerosol generating device comprises a power supply assembly, a suction nozzle and an atomizer, the power supply assembly is used for supplying power to the atomizer, and the suction nozzle is communicated with the atomizer. The atomizer is provided with a liquid storage cavity, an atomizing cavity, a pressure relief channel and a heating body; the liquid storage cavity comprises at least two sub liquid storage cavities which are sequentially arranged at intervals, and the bottoms of every two adjacent sub liquid storage cavities are communicated through a connecting groove; an inlet of the pressure relief channel is communicated with one of the sub liquid storage cavities, and an outlet of the pressure relief channel is communicated with the atomization cavity; the liquid inlet face of the heating body is communicated with the sub liquid storage cavities, and the atomization face of the heating body is communicated with the atomization cavity. The liquid storage cavity is divided into at least two sub-liquid storage cavities, so that the capacity of the sub-liquid storage cavities is reduced relative to that of the liquid storage cavity, and the situation that the sub-liquid storage cavities are blocked due to liquid leakage in the using process is reduced; meanwhile, air exchange and pressure relief of the sub liquid storage cavities can be achieved through the pressure relief channels, and liquid leakage and blockage are further reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of aerosol generation, and more particularly relates to an atomizer and an aerosol generating device. BACKGROUND

[0002] The aerosol generating device is a device for heating and atomizing an atomization medium to form an aerosol. The atomizer is an important component of the aerosol generating device. When the liquid storage cavity is filled with oil, the atomization medium is generally locked by the heating body absorbing the atomization medium to generate a certain negative pressure in the liquid storage cavity. However, when the gas pressure in the liquid storage cavity fluctuates greatly due to temperature, a large positive pressure difference between the liquid storage cavity and the heating body will cause the atomization medium in the liquid storage cavity to be squeezed out through the heating body, resulting in liquid leakage and even blockage. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiments of the present application is to provide an atomizer and an aerosol generating device to solve the technical problem of liquid leakage of the atomizer in the prior art.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is to provide an atomizer, which has a liquid storage cavity, an atomization cavity, a pressure relief channel and a heating body. The liquid storage cavity includes at least two sub-liquid storage cavities arranged in sequence and spaced apart, and the bottoms of two adjacent sub-liquid storage cavities are communicated through a connecting groove. The inlet of the pressure relief channel is communicated with one of the sub-liquid storage cavities, and the outlet of the pressure relief channel is communicated with the atomization cavity. The liquid inlet surface of the heating body is communicated with each of the sub-liquid storage cavities, and the atomization surface of the heating body is communicated with the atomization cavity.

[0005] In some embodiments, the cross-sectional dimension of the connecting groove is less than or equal to 4mm x 4mm.

[0006] In some embodiments, the at least two sub-liquid storage cavities are distributed in sequence along the circumference of the atomization cavity. For the sub-liquid storage cavity communicated with the pressure relief channel, the pressure relief channel and the connecting groove are respectively arranged close to both sides of the sub-liquid storage cavity along the circumference of the atomization cavity.

[0007] In some embodiments, the atomizer further comprises a liquid storage groove, and the outlet of the pressure relief channel is communicated with the liquid storage groove. The liquid storage groove is formed in the bottom of the atomization cavity.

[0008] In some embodiments, the atomizer further comprises a liquid guide cotton, and the liquid guide cotton is wrapped around the liquid inlet surface of the heating body. The liquid guide cotton is attached to the inner circumferential wall of the atomization cavity.

[0009] In some embodiments, the liquid guide cotton extends into the liquid storage groove.

[0010] Alternatively, the liquid storage tank is further provided with a back absorption cotton abutting against the liquid guide cotton.

[0011] In some embodiments, the atomizer comprises a liquid storage bin, an atomizing tube and a sealing member; the liquid storage bin and the atomizing tube jointly enclose the liquid storage cavity, the atomizing cavity is formed in the atomizing tube, the sealing member covers the bottom of the liquid storage cavity and the atomizing cavity, and the pressure relief channel is formed in the sealing member; the sealing member is further provided with an air inlet channel communicating with the atomizing cavity.

[0012] In some embodiments, the sealing member is concavely provided with an annular groove having a first inner circumferential wall and a second inner circumferential wall oppositely arranged along the radial direction, the pressure relief channel is formed in the first inner circumferential wall, and the bottom end of the atomizing tube is inserted into the annular groove and covers the pressure relief channel; the third inner circumferential wall of the atomizing tube, the bottom of the first inner circumferential wall, the bottom wall of the annular groove and the second inner circumferential wall jointly enclose the liquid storage tank.

[0013] In some embodiments, the pressure relief channel is arranged around the atomizing cavity, and the pressure relief channel comprises a plurality of sub-channels sequentially and spacedly arranged along the axial direction of the atomizing cavity, the sub-channels extend along the circumferential direction of the atomizing cavity, and adjacent sub-channels are communicated through a connecting channel.

[0014] Alternatively, the pressure relief channel spirally extends along the axial direction of the atomizing cavity.

[0015] In another aspect, the present application further provides an aerosol generating device comprising a power supply assembly, a mouthpiece and the above-mentioned atomizer, wherein the power supply assembly is used for supplying power to the atomizer, and the mouthpiece communicates with the atomizer.

[0016] The atomizer and the aerosol generating device provided by the present application have the following beneficial effects: by separating the liquid storage cavity into at least two sub-liquid storage cavities arranged sequentially and spacedly, the capacity of each sub-liquid storage cavity is reduced relative to the capacity of the liquid storage cavity, thereby reducing the risk of leakage and blockage of the sub-liquid storage cavity during use. Meanwhile, one of the sub-liquid storage cavities communicates with the inlet of the pressure relief channel, so that when the pressure in the sub-liquid storage cavity changes greatly, the pressure relief channel can lock the atomizing medium squeezed out of the sub-liquid storage cavity, thereby reducing the risk of leakage and blockage due to the fact that the heating element cannot lock more atomizing medium. In addition, the bottoms of two adjacent sub-liquid storage cavities are communicated through a connecting groove, so that when the atomizing medium in the sub-liquid storage cavity communicating with the pressure relief channel is consumed, the sub-liquid storage cavity can act as a pressure relief space for other sub-liquid storage cavities, thereby further reducing the risk of leakage and blockage of other sub-liquid storage cavities during use. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0018] Figure 1 A perspective structural schematic diagram of an aerosol generating device provided by an embodiment of the present application is shown in the figure.

[0019] Figure 2 A cross-sectional schematic diagram of the aerosol generating device provided by an embodiment of the present application is shown in the figure.

[0020] Figure 3 A partial enlarged structural schematic diagram of the aerosol generating device provided by an embodiment of the present application is shown in the figure. Figure 2 A partial enlarged structural schematic diagram of the aerosol generating device provided by an embodiment of the present application is shown in the figure.

[0021] Figure 4 A cross-sectional schematic diagram of the aerosol generating device provided by an embodiment of the present application is shown in the figure.

[0022] Figure 5 A partial enlarged structural schematic diagram of the aerosol generating device provided by an embodiment of the present application is shown in the figure. Figure 4 A partial enlarged structural schematic diagram of the aerosol generating device provided by an embodiment of the present application is shown in the figure.

[0023] Figure 6 A structural schematic diagram of the aerosol generating device provided by an embodiment of the present application is shown in the figure.

[0024] Figure 7 A structural schematic diagram of the aerosol generating device provided by an embodiment of the present application is shown in the figure.

[0025] Figure 8 A structural schematic diagram of the aerosol generating device provided by an embodiment of the present application is shown in the figure.

[0026] Figure 9 A cross-sectional structural schematic diagram of the aerosol generating device provided by an embodiment of the present application is shown in the figure.

[0027] In the figure, various reference signs are as follows:

[0028] 1. An atomizer; 101, a liquid storage cavity; 1011, a sub-liquid storage cavity; 102, an atomization cavity; 103, a pressure relief channel; 1031, a sub-channel; 1032, a connecting channel; 1033, an inlet channel; 1034, an outlet channel; 104, a liquid storage groove; 105, a gas guide channel; 100, a liquid storage bin; 110, a peripheral plate; 120, an inner peripheral plate; 130, a partition plate; 131, a connecting groove; 200, an atomization tube; 210, a liquid inlet; 300, a sealing member; 310, an air inlet channel; 320, an annular groove; 321, a first inner peripheral wall; 3211, an upper wall segment; 3212, a lower wall segment; 3213, a step surface; 322, a second inner peripheral wall; 400, a heating body; 410, a liquid inlet surface; 420, an atomization surface; 500, a liquid guide cotton; 600, a sealing cover; 2, a power supply assembly; 201, a battery; 202, an air flow sensor; 203, a battery holder; 204, a main housing; 205, a circuit board; 3, a suction nozzle. DETAILED DESCRIPTION

[0029] In order to make the technical problems to be solved, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, and not to limit the present application.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] It should be understood that the terms "first direction", "second direction", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0033] As described in the background, in order to ensure the structural sealing, when the oil is filled in the liquid storage cavity, the heating body is generally used to absorb the atomization medium to generate a certain negative pressure in the liquid storage cavity to lock the atomization medium. However, when the gas pressure in the liquid storage cavity fluctuates greatly due to temperature influence, a large positive pressure difference between the liquid storage cavity and the heating body will be generated, which will cause the atomization medium in the liquid storage cavity to be squeezed out through the heating body, resulting in liquid leakage and even blockage.

[0034] The ideal gas state equation is PV = nRT, wherein P represents the pressure of the ideal gas, V represents the volume of the ideal gas, n represents the amount of gas substance, T represents the thermodynamic temperature of the ideal gas, and R represents the ideal gas constant. It can be seen from the above formula that the temperature and the pressure are proportional, and when the temperature decreases, the gas pressure in the liquid storage cavity will decrease; when the temperature increases, the gas pressure in the liquid storage cavity increases.

[0035] In addition, when the capacity of the liquid storage cavity is large, for example, more than 2ml, when a part of the atomization medium in the liquid storage cavity is consumed, the larger the gas volume in the liquid storage cavity, the greater the risk of leakage of the atomization medium in the liquid storage cavity when the temperature difference changes.

[0036] In order to solve the above problems, the present application provides a kind of atomizer and aerosol generating device, by separating at least two sub liquid storage cavities from liquid storage cavity, the capacity of single sub liquid storage cavity is relatively small, when the atomization medium in the sub liquid storage cavity is consumed most, the gas volume in the sub liquid storage cavity will not be too large, and when the gas pressure in the sub liquid storage cavity changes suddenly, the pressure release and ventilation of sub liquid storage cavity can be realized through pressure relief channel, the atomization medium in the sub liquid storage cavity can be released to pressure relief channel, reduce liquid leakage, and when the pressure in the sub liquid storage cavity recovers, the atomization medium in the pressure relief channel can also be sucked back into the sub liquid storage cavity.

[0037] Please refer to Figures 1 to 6 Now the atomizer 1 provided by the embodiment of the application will be described.

[0038] The atomizer 1 has a liquid storage cavity 101, an atomization cavity 102, a pressure relief channel 103 and a heating body 400; the liquid storage cavity 101 includes at least two sub liquid storage cavities 1011 arranged in sequence and spaced apart, the bottoms of two adjacent sub liquid storage cavities 1011 are communicated through a connecting groove 131; the inlet of the pressure relief channel 103 is communicated with one of the sub liquid storage cavities 1011, and the outlet of the pressure relief channel 103 is communicated with the atomization cavity 102; the liquid inlet surface 410 of the heating body 400 is communicated with each sub liquid storage cavity 1011 respectively, and the atomization surface 420 of the heating body 400 is communicated with the atomization cavity 102.

[0039] The number of the sub-liquid storage cavities 1011 can be two or more. The capacity of a single sub-liquid storage cavity 1011 can be 1 ml, 1.5 ml, or 2 ml, etc. The number of the sub-liquid storage cavities 1011 can be obtained according to the ratio of the total capacity of the liquid storage cavity 101 to the capacity of a single sub-liquid storage cavity 1011. For example, when the total capacity of the liquid storage cavity 101 is 3 ml, two sub-liquid storage cavities 1011 can be designed; for example, when the total capacity of the liquid storage cavity 101 is 5 ml, three sub-liquid storage cavities 1011 can be designed.

[0040] The pressure relief channel 103 can be in communication with the sub-liquid storage cavity 1011 at the leading end, the pressure relief channel 103 can also be in communication with the sub-liquid storage cavity 1011 at the trailing end, and the pressure relief channel 103 can also be in communication with the sub-liquid storage cavity 1011 at the middle. The sub-liquid storage cavity 1011 in communication with the pressure relief channel 103 is the first sub-liquid storage cavity 1011, and the sub-liquid storage cavities 1011 in communication with the first sub-liquid storage cavity 1011 in turn are the second sub-liquid storage cavity 1011, the third sub-liquid storage cavity 1011, etc.

[0041] When the suction nozzle 3 is used, the first sub-liquid storage cavity 1011 can exchange air through the pressure relief channel 103, so that the atomized medium in the first sub-liquid storage cavity 1011 is preferentially heated and atomized by the heating body 400 and forms aerosol in the atomization cavity 102. Due to the arrangement of the pressure relief channel 103, even if the first sub-liquid storage cavity 1011 faces a sudden pressure change, the atomized medium can be released to the pressure relief channel 103 and stored. In addition, the volume of the first sub-liquid storage cavity 1011 is relatively reduced compared to the total volume of the liquid storage cavity 101, so that the gas volume in the first sub-liquid storage cavity 1011 is small, and too much atomized medium will not flow to the pressure relief channel 103 and the heating body 400, and the phenomenon of oil leakage due to the inability of the pressure relief channel 103 to hold will not occur.

[0042] When the atomized medium in the first sub-liquid storage cavity 1011 is used up, since the second sub-liquid storage cavity 1011 is in communication with the first sub-liquid storage cavity 1011 through the connecting groove 131, the second sub-liquid storage cavity 1011 can exchange air and relieve pressure through the first sub-liquid storage cavity 1011 and the pressure relief channel 103, that is, the first sub-liquid storage cavity 1011 can act as a larger-volume pressure relief space for the second sub-liquid storage cavity 1011, thereby avoiding the leakage of the second sub-liquid storage cavity 1011 when in use. By analogy, when the third sub-liquid storage cavity 1011 is used, the first sub-liquid storage cavity 1011 and the second sub-liquid storage cavity 1011 can both act as pressure relief spaces for the third sub-liquid storage cavity 1011 to avoid the leakage.

[0043] The atomizer 1 in the embodiment of the present application, by separating the liquid storage cavity 101 into at least two sub-liquid storage cavities 1011 arranged in sequence, the capacity of each sub-liquid storage cavity 1011 is reduced relative to the capacity of the liquid storage cavity 101, thereby reducing the leakage and blockage of the sub-liquid storage cavity 1011 during use. At the same time, one of the sub-liquid storage cavities 1011 is in communication with the inlet of the pressure relief channel 103, so that when the pressure in the sub-liquid storage cavity 1011 changes greatly, the pressure relief channel 103 can lock the atomizing medium squeezed out of the sub-liquid storage cavity 1011, reducing the oil leakage and blockage caused by the heating body 400 being unable to lock more atomizing medium. In addition, the bottoms of two adjacent sub-liquid storage cavities 1011 are communicated through the connecting groove 131, so that when the atomizing medium in the sub-liquid storage cavity 1011 communicated with the pressure relief channel 103 is consumed, the sub-liquid storage cavity 1011 can act as a pressure relief space for other sub-liquid storage cavities 1011, further reducing the oil leakage and blockage of other sub-liquid storage cavities 1011 during use.

[0044] In some embodiments, referring to Figure 3 and Figure 5 , the cross-sectional dimension of the connecting groove 131 is less than or equal to 4mmx4mm. Among them, the cross section of the connecting groove 131 refers to the face perpendicular to the depth extension direction of the connecting groove 131, that is, the face perpendicular to the flow direction of the fluid in the connecting groove 131, that is, the face perpendicular to the thickness direction of the partition plate 130. The cross-sectional dimension of the connecting groove 131 is less than or equal to 4mmx4mm, that is, the first direction dimension of the connecting groove 131 is less than or equal to 4mm, and the second direction dimension of the connecting groove 131 is also less than or equal to 4mm, for example, the first direction dimension of the connecting groove 131 can be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm or 4mm, and the second direction dimension of the connecting groove 131 can be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm or 4mm. Among them, the first direction and the second direction are any two directions perpendicular to each other in the cross section of the connecting groove 131.

[0045] In the embodiment, by limiting the maximum dimension of the cross section of the connecting groove 131, the size of the connecting groove 131 is small enough, so that when the first sub-liquid storage cavity 1011 is in use, the atomizing medium in the second sub-liquid storage cavity 1011 will not enter the first sub-liquid storage cavity 1011 through the connecting groove 131, that is, it will not cause the two sub-liquid storage cavities 1011 to be filled at the same time. In addition, the connecting groove 131 can also release the pressure of the atomizing medium in the second sub-liquid storage cavity 1011 to the first sub-liquid storage cavity 1011 after the atomizing medium in the first sub-liquid storage cavity 1011 is consumed, to prevent liquid leakage.

[0046] Optionally, the cross section of the connecting groove 131 is square, circular, elliptical or other combined shape, wherein the combined shape refers to a closed shape enclosed by straight lines and / or curves.

[0047] In some embodiments, referring to Figure 4 , the atomization cavity 102 is circular, and the at least two sub-liquid storage cavities 1011 are sequentially distributed along the circumference of the atomization cavity 102; for the sub-liquid storage cavity 1011 (i.e., the first sub-liquid storage cavity 1011) in communication with the pressure relief channel 103, the pressure relief channel 103 and the connecting groove 131 are respectively arranged close to two sides of the first sub-liquid storage cavity 1011 along the circumference of the atomization cavity 102. That is, the pressure relief channel 103 and the connecting groove 131 in communication with the first sub-liquid storage cavity 1011 are respectively arranged close to two sides of the first sub-liquid storage cavity 1011 along the circumference of the atomization cavity 102, and the connecting groove 131 is relatively far away from the pressure relief channel 103 along the circumference. In this way, when the atomization medium in the first sub-liquid storage cavity 1011 is pushed towards the pressure relief channel 103, the liquid in the second sub-liquid storage cavity 1011 will not flow from the connecting groove 131 to the first sub-liquid storage cavity 1011, avoiding the situation that the atomization medium in the first sub-liquid storage cavity 1011 and the second sub-liquid storage cavity 1011 is synchronized to flow out, that is, avoiding the situation that the combination of the first sub-liquid storage cavity 1011 and the second sub-liquid storage cavity 1011 is equivalent to a larger volume of the liquid storage cavity 101. Of course, in other embodiments, the atomization cavity 102 can also be elliptical or other shapes, as long as the pressure relief channel 103 and the connecting groove 131 are as far away from each other as possible.

[0048] In some embodiments, the connecting groove 131 and the pressure relief channel 103 are arranged close to the heating body 400, so that the heat of the heating body 400 can be transmitted to the connecting groove 131 and the pressure relief channel 103, thereby promoting the flow of liquid in the pressure relief channel 103 and the connecting groove 131, and achieving air exchange.

[0049] In some embodiments, each sub-liquid storage cavity 1011 is arranged around one circumference of the atomization cavity 102. In other embodiments of the present application, each sub-liquid storage cavity 1011 is arranged around part of the circumference of the atomization cavity 102, that is, each sub-liquid storage cavity 1011 is not arranged around the entire circumference of the atomization cavity 102.

[0050] In some embodiments, the volumes of each sub-liquid storage cavity 1011 are equal. It can be understood that in other embodiments of the present application, the volumes of each sub-liquid storage cavity 1011 can also be unequal.

[0051] In a specific embodiment, referring to Figure 6The liquid storage cavity 101 includes two sub-liquid storage cavities 1011 covering the partial circumferential position of the atomization cavity 102, and the two sub-liquid storage cavities 1011 are symmetrically arranged and separated by a partition plate 130. The bottom of the partition plate 130 is provided with a connecting groove 131. It can be understood that in other embodiments of the present application, the two sub-liquid storage cavities 1011 can also be asymmetrically arranged.

[0052] In some embodiments, referring to Figure 3 and Figure 5 , the atomizer 1 further comprises a liquid storage groove 104, and the outlet of the pressure relief channel 103 communicates with the liquid storage groove 104; the liquid storage groove 104 is formed in the bottom of the atomization cavity 102. The liquid storage groove 104 is arranged so that when the atomization medium in the sub-liquid storage cavity 1011 leaks more, the atomization medium overflowing from the pressure relief channel 103 can flow to the liquid storage groove 104 and be stored, and the atomization medium overflowing from the heating body 400 can also flow to the liquid storage groove 104 at the bottom of the atomization cavity 102 under the action of gravity and be stored to prevent liquid leakage and blockage. In addition, when the pressure in the sub-liquid storage cavity 1011 returns to normal, the atomization medium in the liquid storage groove 104 can be sucked back into the sub-liquid storage cavity 1011 for reuse, or can be sucked back into the heating body 400 through the inner wall of the atomization cavity 102 for heating and atomization of the heating body 400.

[0053] In some embodiments, referring to Figure 3 and Figure 5 , the atomizer 1 further comprises a liquid guiding cotton 500, the liquid guiding cotton 500 is wrapped around the liquid inlet surface 410 of the heating body 400, and the liquid guiding cotton 500 is attached to the inner circumferential wall of the atomization cavity 102. The liquid guiding cotton 500 is arranged to lock the atomization medium flowing from the sub-liquid storage cavity 1011 to the heating body 400, prevent the atomization medium from leaking from the heating body 400, and also guide the overflowing atomization medium to flow to the liquid storage groove 104 through the inner circumferential wall of the liquid storage cavity 101 for storage. In addition, after the pressure in the sub-liquid storage cavity 1011 returns to normal, the atomization medium in the liquid storage groove 104 can also be sucked back for heating and atomization of the heating body 400.

[0054] In some embodiments, referring to Figure 5 , the liquid guiding cotton 500 extends into the liquid storage groove 104. That is, the axial length of the liquid guiding cotton 500 is lengthened so that the liquid guiding cotton 500 can extend into the liquid storage groove 104. In this way, the overflowing atomization medium in the liquid guiding cotton 500 can directly flow to the liquid storage groove 104, and the atomization medium in the liquid storage groove 104 can also be directly sucked by the liquid guiding cotton 500 for heating and atomization of the heating body 400.

[0055] Optionally, the liquid guide cotton 500 can extend to a preset depth in the liquid storage groove 104 to realize the communication between the liquid guide cotton 500 and the liquid storage groove 104. In other embodiments, the liquid guide cotton 500 can also be directly extended to the bottom of the liquid storage groove 104.

[0056] In some embodiments, the flow resistance of the fluid in the pressure relief channel 103 is lower than the flow resistance of the fluid in the liquid guide cotton 500.

[0057] It should be noted here that the flow resistance of the fluid in the pressure relief channel 103 is lower than the flow resistance of the fluid in the liquid guide cotton 500, which means that when the same fluid flows through the pressure relief channel 103 and the liquid guide cotton 500 respectively, the fluid receives a smaller resistance in the pressure relief channel 103 than in the liquid guide cotton 500, that is, when the fluid needs to choose the liquid guide cotton 500 and the pressure relief channel 103 to flow through, it will prefer the pressure relief channel 103.

[0058] With the above arrangement, when the user sucks the suction nozzle 3 under the normal pressure state of the sub-liquid storage cavity 1011, the external gas enters the sub-liquid storage cavity 1011 through the pressure relief channel 103 to realize the air exchange, the atomized medium in the sub-liquid storage cavity 1011 flows to the liquid guide cotton 500, and the liquid guide cotton 500 heats and atomizes the atomized medium to form an aerosol. When the atomized medium in the sub-liquid storage cavity 1011 is consumed by more than half, and the air pressure in the sub-liquid storage cavity 1011 suddenly increases, due to the action of the air pressure, the atomized medium will be preferentially squeezed from the pressure relief channel 103 and the liquid storage groove 104, so that the atomized medium can be stored through the liquid storage groove 104, avoiding the atomized medium being squeezed to the liquid guide cotton 500 and causing oil leakage.

[0059] In some embodiments, please refer to Figures 2 to 4 , the atomizer 1 comprises a liquid storage bin 100, an atomization pipe 200 and a sealing piece 300; the liquid storage bin 100 and the atomization pipe 200 jointly enclose a liquid storage cavity 101, an atomization cavity 102 is formed in the atomization pipe 200, the sealing piece 300 covers the bottom of the liquid storage cavity 101 and the atomization cavity 102, and a pressure relief channel 103 is formed in the sealing piece 300; the sealing piece 300 also has an air inlet channel 310 in communication with the atomization cavity 102. Through the arrangement of the sealing piece 300, on the one hand, the sealing of the liquid storage cavity 101 can be formed, and on the other hand, the formation of the pressure relief channel 103, the liquid storage groove 104 and the air inlet channel 310 can be facilitated, and the structure of the liquid storage bin 100 is simplified. It can be understood that in other embodiments of the present application, the sealing piece 300 can also not be arranged, but the pressure relief channel 103, the liquid storage groove 104 and the air inlet channel 310 are all directly formed in the liquid storage bin 100, which is not limited here.

[0060] In some embodiments, please refer to Figure 3 , Figure 5 , Figure 8 andFigure 9 The sealing member 300 is concavely provided with an annular groove 320, the annular groove 320 has a first inner circumferential wall 321 and a second inner circumferential wall 322 oppositely arranged in the radial direction, the pressure relief channel 103 is formed in the first inner circumferential wall 321, and the bottom end of the atomization pipe 200 is inserted into the annular groove 320 and covers the pressure relief channel 103; the third inner circumferential wall of the atomization pipe 200, the bottom of the first inner circumferential wall 321, the bottom wall of the annular groove 320 and the second inner circumferential wall 322 jointly enclose the liquid storage groove 104. The above arrangement enables the pressure relief channel 103 to be arranged in close contact with the atomization pipe 200, and the heat generated by the heating body 400 can be transmitted to the pressure relief channel 103 as much as possible to promote the fluid flow in the pressure relief channel 103, which is beneficial to the air exchange and pressure relief; at the same time, the bottom surface of the liquid storage groove 104 can be lower than the pressure relief channel 103, and the atomization medium in the pressure relief channel 103 can flow into the liquid storage groove 104 for storage. The inner diameter of the second inner circumferential wall 322 is smaller than the inner diameter of the first inner circumferential wall 321.

[0061] Specifically, please refer to Figure 9 The first inner circumferential wall 321 includes an upper wall section 3211 and a lower wall section 3212, the inner diameter of the upper wall section 3211 is greater than the inner diameter of the lower wall section 3212, a stepped surface 3213 is formed at the position where the upper wall section 3211 is connected with the lower wall section 3212, the pressure relief channel 103 is formed in the upper wall section 3211, the outer circumferential wall of the atomization pipe 200 is attached to the upper wall section 3211, the bottom end surface of the atomization pipe 200 abuts against the stepped surface 3213, that is, the atomization pipe 200 is axially limited by the stepped surface 3213, and the third inner circumferential wall of the atomization pipe 200, the lower wall section 3212, the bottom wall of the annular groove 320 and the second inner circumferential wall 322 jointly enclose the above-mentioned liquid storage groove 104. In addition, in the embodiment in which the liquid guiding cotton 500 extends into the liquid storage groove 104, the bottom end surface of the liquid guiding cotton 500 can also abut against the stepped surface 3213 to achieve axial limitation.

[0062] In the embodiment with the sealing member 300, the air inlet channel 310 penetrates the sealing member 300 in the axial direction, and the second inner circumferential wall 322 is arranged around the air inlet channel 310.

[0063] In some embodiments, please refer to Figure 3 , Figure 5 , Figure 8 and Figure 9 The pressure relief channel 103 includes a plurality of sub-channels 1031 arranged in sequence along the axial direction of the atomization cavity 102, the sub-channels 1031 extend along the circumferential direction of the atomization cavity 102, and adjacent sub-channels 1031 are communicated by a connecting channel 1032. Such an arrangement enables each sub-channel 1031 to extend along the circumferential direction of the atomization cavity 102, which can reduce the processing difficulty of each sub-channel 1031 and also enhance the locking ability of the sub-channels 1031 to the atomization medium, thereby reducing liquid leakage.

[0064] In some embodiments, referring to Figure 8 , the head and tail of each sub-channel 1031 are sequentially communicated, specifically, the head of a certain sub-channel 1031 is communicated with the previous sub-channel 1031 through the connecting channel 1032, and the tail of the sub-channel 1031 is communicated with the next sub-channel 1031 through the connecting channel 1032, so that the atomization medium flows along each sub-channel 1031 in turn, for example, the inlet of the pressure relief channel 103 flows to the outlet of the pressure relief channel 103 through each sub-channel 1031 in turn.

[0065] In some embodiments, referring to Figure 8 , the pressure relief channel 103 further includes an inlet channel 1033 and an outlet channel 1034. In the embodiment with the sealing member 300, each sub-channel 1031 is formed on the first inner circumferential wall 321 and extends along the circumference of the first inner circumferential wall 321, the inlet channel 1033 extends from the sealing member 300 to the upper surface of the liquid storage cavity 101 to the uppermost sub-channel 1031, and the outlet channel 1034 extends from the lowermost sub-channel 1031 to the stepped surface 3213. Each connecting channel 1032, inlet channel 1033, and outlet channel 1034 extend along the axial direction of the annular groove 320, thereby reducing the processing difficulty of the pressure relief channel 103.

[0066] In some embodiments, referring to Figure 6 and Figure 7 , the liquid storage bin 100 includes a peripheral plate 110 and an inner peripheral plate 120, part of the outer side wall of the inner peripheral plate 120 is integrally connected with the inner side wall of the peripheral plate 110, the opposite ends of the atomization tube 200 are respectively inserted into the inner peripheral plate 120 and the sealing member 300, the peripheral plate 110 and the inner peripheral plate 120 are connected with a partition plate 130, and a connecting groove 131 is formed in the bottom of the partition plate 130. The peripheral plate 110, the inner peripheral plate 120, and the atomization tube 200 together enclose the liquid storage cavity 101, the partition plate 130 divides the liquid storage cavity 101 into sub-liquid storage cavities 1011, and the inner peripheral plate 120 encloses the gas guide channel 105 communicated with the atomization cavity 102. The sub-channel 1031 does not penetrate the circumference of the first inner circumferential wall 321, specifically, the sub-channel 1031 avoids the connecting part of the peripheral plate 110 and the inner peripheral plate 120.

[0067] In this embodiment, the gas guide channel 105 is formed by the inner peripheral plate 120, without the need to install an additional gas guide tube to form the gas guide channel 105, and without the need to lengthen the atomization tube 200 to form the gas guide channel 105, so that the length of the atomization tube 200 only needs to cover the heating body 400 and the liquid guide cotton 500, and the length of the atomization tube 200 is sufficient, thereby reducing the cost of the atomization tube 200.

[0068] In some embodiments, referring to Figure 5The heating body 400 is in a cylindrical shape, the heating body 400 is a ceramic heating body 400, and the liquid guiding cotton 500 is wrapped around the outer periphery of the heating body 400. The circumferential wall of the atomization pipe 200 has a plurality of liquid inlets 210, each of the liquid inlets 210 is in communication with each of the sub-liquid storage cavities 1011, and the liquid inlets 210 are used to guide the atomization medium in the sub-liquid storage cavities 1011 to the liquid guiding cotton 500 and the heating body 400.

[0069] In some other embodiments of the present application, the pressure relief channel 103 can also extend spirally along the axial direction of the atomization cavity 102.

[0070] In some other embodiments of the present application, the liquid guiding cotton can also not be lengthened, but an additional back-suction cotton can be additionally arranged. Specifically, the back-suction cotton is arranged in abutment with the liquid guiding cotton 500 in the liquid storage groove 104, the back-suction cotton forms the communication between the liquid storage groove 104 and the liquid guiding cotton 500, the back-suction cotton transmits the atomization medium overflowing from the liquid guiding cotton 500 to the liquid storage groove 104, and the back-suction cotton back-suctions the atomization medium in the liquid storage groove 104 to the liquid guiding cotton 500. Specifically, the material of the back-suction cotton is the same as that of the liquid guiding cotton 500, and the back-suction cotton and the liquid guiding cotton 500 are both enclosed to form a circular shape.

[0071] In some embodiments, referring to Figure 2 and Figure 4 , the atomizer 1 further comprises a sealing cover 600, and the sealing cover 600 is arranged on the top of the liquid storage cavity 101.

[0072] On the other hand, the present application also provides an aerosol generating device, which comprises a power supply assembly 2, a suction nozzle 3 and the above-mentioned atomizer 1. The power supply assembly 2 is used to supply power to the atomizer 1, and the suction nozzle 3 is in communication with the atomizer 1. The atomizer 1 heats and atomizes the atomization medium to form an aerosol after being powered on, and the suction nozzle 3 is used to guide the aerosol out for the user to smoke.

[0073] Referring to Figure 2 and Figure 4 , the power supply assembly 2 comprises a battery 201, a circuit board 205, an airflow sensor 202, a battery holder 203 and a main housing 204. The battery 201 is electrically connected with the circuit board 205, the airflow sensor 202 is electrically connected with the circuit board 205, and the circuit board 205 is electrically connected with the heating body 400 through a wire. When the user sucks the suction nozzle 3, the airflow sensor 202 detects the airflow and feeds back to the circuit board 205, the circuit board 205 supplies power to the heating body 400, and the heating body 400 generates heat to heat and atomize the atomization medium to form an aerosol. External gas enters the atomization cavity 102 through the air inlet channel 310, carries the aerosol, and is guided out through the air guiding channel 105 and the suction nozzle 3 for the user to smoke.

[0074] Specifically, the battery 201 is installed in the liquid storage bin 100, and the battery 201 is arranged transversely apart from the liquid storage cavity 101. The battery rack 203 is installed below the liquid storage bin 100, the circuit board 205 and the airflow sensor 202 are installed on the battery rack 203, the main shell 204 is sleeved outside the liquid storage bin 100 and the battery rack 203, the suction nozzle 3 is installed on the top of the liquid storage bin 100, and the sealing cover 600 abuts between the suction nozzle 3 and the liquid storage bin 100.

[0075] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An atomizer, characterized in that, The atomizer has a liquid storage chamber, an atomizing chamber, a pressure relief channel, and a heating element; the liquid storage chamber includes at least two sub-liquid storage chambers arranged sequentially at intervals, and the bottoms of two adjacent sub-liquid storage chambers are connected by a connecting groove; the inlet of the pressure relief channel is connected to one of the sub-liquid storage chambers, and the outlet of the pressure relief channel is connected to the atomizing chamber; the liquid inlet surface of the heating element is connected to each of the sub-liquid storage chambers, and the atomizing surface of the heating element is connected to the atomizing chamber.

2. The atomizer as described in claim 1, characterized in that, The cross-sectional dimensions of the connecting groove are less than or equal to 4mm × 4mm.

3. The atomizer as described in claim 1, characterized in that, At least two of the sub-liquid storage chambers are sequentially distributed along the circumference of the atomizing chamber; for the sub-liquid storage chamber that communicates with the pressure relief channel, the pressure relief channel and the connecting groove are respectively arranged close to the two sides of the sub-liquid storage chamber along the circumference of the atomizing chamber.

4. The atomizer according to any one of claims 1 to 3, characterized in that, The atomizer also includes a liquid storage tank, and the outlet of the pressure relief channel is connected to the liquid storage tank; the liquid storage tank is formed at the bottom of the atomization chamber.

5. The atomizer as described in claim 4, characterized in that, The atomizer also includes a liquid-guiding cotton, which covers the liquid inlet surface of the heating element and is attached to the inner peripheral wall of the atomization chamber.

6. The atomizer as described in claim 5, characterized in that, The liquid-guiding cotton extends into the liquid storage tank; Alternatively, the liquid storage tank may also be provided with a back-absorbing cotton that abuts against the liquid-guiding cotton.

7. The atomizer as described in claim 4, characterized in that, The atomizer includes a liquid storage chamber, an atomizing tube, and a sealing element; the liquid storage chamber and the atomizing tube together form the liquid storage cavity, the atomizing cavity is formed in the atomizing tube, the sealing element covers the bottom of the liquid storage cavity and the atomizing cavity, and the pressure relief channel is formed in the sealing element; the sealing element also has an air inlet channel communicating with the atomizing cavity.

8. The atomizer as described in claim 7, characterized in that, The sealing element is recessed with an annular groove, the annular groove having a first inner peripheral wall and a second inner peripheral wall arranged radially opposite each other, the pressure relief channel is formed in the first inner peripheral wall, the bottom end of the atomizing tube is inserted into the annular groove and covers the pressure relief channel; the third inner peripheral wall of the atomizing tube, the bottom of the first inner peripheral wall, the bottom wall of the annular groove and the second inner peripheral wall together form the liquid storage tank.

9. The atomizer according to any one of claims 1 to 3, characterized in that, The pressure relief channel is arranged around the atomizing chamber, and the pressure relief channel includes multiple sub-channels arranged at intervals along the axial direction of the atomizing chamber. The sub-channels extend circumferentially along the atomizing chamber, and adjacent sub-channels are connected by connecting channels. Alternatively, the pressure relief channel extends spirally along the axial direction of the atomizing chamber.

10. An aerosol generating apparatus, characterized in that, The device includes a power supply assembly, a mouthpiece, and an atomizer as described in any one of claims 1 to 9, wherein the power supply assembly is used to supply power to the atomizer, and the mouthpiece is in communication with the atomizer.

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