atomizer

Abstract

To solve a problem that when an atomizer requires a high atomization speed, local overheating of a substance to be atomized is easily caused.SOLUTION: In the present application, an atomizer is provided. The atomizer comprises a plurality of heating assemblies. Each heating assembly includes a heating sleeve, a magnetic conduction member, and an excitation coil. The magnetic conduction member includes an induction portion and two output portions. The two output portions are provided separately at both ends of the induction portion. The magnet exciting coil is provided on the induction portion. One end away from the induction portion, of the output portions is provided facing the heating sleeve in a radial direction of the heating sleeve. The heating sleeves of the plurality of heating assemblies are sequentially arranged in an axial direction of the heating sleeve. At least two induction portions of the plurality of induction portions have different widths in the axial direction of the heating sleeve.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present application is in the technical field of atomizers, and more particularly relates to atomizers. [Background technology]

[0002] Atomizers are used to generate gas by vaporizing a liquid or sublimating a solid. The process of generating gas requires heating the material to be atomized. When heating the material to be atomized, uniform heating is required to avoid the following problem: localized overheating can cause chemical reactions such as decomposition or oxidation of the heated material, resulting in denaturation of the material, resulting in the final generated mist losing its original properties and failing to achieve the expected effect. In conventional technologies, a single heat source is typically used to heat the material to be atomized. When a high atomization rate is required, localized overheating can easily occur, resulting in denaturation of the atomized material. Summary of the Invention [Problem to be solved by the invention]

[0003] The embodiments of the present application provide an atomizer that solves the problem that conventional atomizers tend to cause localized overheating of the substance being atomized when a high atomization rate is required. [Means for solving the problem]

[0004] An embodiment of the present application provides an atomizer. The atomizer includes a plurality of heating assemblies, each including a heating sleeve, a magnetically conductive member, and an excitation coil. The magnetically conductive member includes an induction section and two output sections, the two output sections being provided at opposite ends of the induction section, respectively. The induction section is provided with an excitation coil, and one end of the output section remote from the induction section faces the heating sleeve in the radial direction of the heating sleeve. The heating sleeves of the plurality of heating assemblies are sequentially arranged in the axial direction of the heating sleeve, and at least two of the plurality of induction sections have different widths in the axial direction of the heating sleeve.

[0005] In some embodiments, multiple excitation coils are connected in series in series.

[0006] In some embodiments, the atomizer further comprises a printed circuit board (PCB), and the coupling portions of adjacent excitation coils are welded to the PCB.

[0007] In some embodiments, the heating assembly has a steam discharge direction along the axial direction of the heating sleeve, and the widths of the multiple induction portions in the steam discharge direction decrease one by one along the steam discharge direction.

[0008] In some embodiments, adjacent magnetic conductive members are spaced apart from one another.

[0009] In some embodiments, the end face of the output portion at one end facing the heating sleeve matches the surface of the heating sleeve.

[0010] In some embodiments, the coil turns density of the multiple excitation coils is the same.

[0011] In some embodiments, the atomizer further comprises an insulating ring, the insulating ring being disposed between adjacent heating sleeves.

[0012] In some embodiments, the heating sleeve is cylindrical.

[0013] In some embodiments, the heating sleeves are provided with a cylindrical wall having the same thickness. [Effects of the Invention]

[0014] In the atomizer according to the embodiment of the present application, at least two of the induction sections of the multiple magnetically conductive members have different widths in the axial direction of the heating sleeve. Therefore, when the same current flows through the excitation coil, the magnetic flux of the induced magnetic field generated by the induction sections with different widths also differs. According to Lenz's law, the induced electromotive force is equal to the rate of change of magnetic flux over time. Therefore, an induction section with a small magnetic flux outputs a small induced electromotive force to the heating sleeve, and the thermal efficiency of the eddy current generated in the heating sleeve is also low. Therefore, induction sections with different widths have different thermal efficiencies. When different heating assemblies heat the heated material, different parts of the heated material will have different temperatures due to thermal convection, so different parts of the heated material cannot be heated with the same thermal efficiency. Otherwise, the hotter parts will overheat. In the atomizer according to the embodiment of the present application, at least two heating assemblies can provide heating with different powers, thereby avoiding local overheating. Furthermore, the use of multiple heating assemblies ensures high heating efficiency. As described above, the atomizer provided in the present embodiment can avoid local overheating of the atomized material when achieving a high atomization rate. [Brief explanation of the drawings]

[0015] In order to more clearly describe the technical solutions in the embodiments of the present application, the following briefly introduces the drawings used in the description of the embodiments. Obviously, the drawings used in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

[0016] For a more complete understanding of the present invention and its beneficial advantages, reference should be made to the following drawings, in which like reference numerals refer to like parts and in which: [Figure 1]1 is a schematic diagram showing a cross-sectional structure of an atomizer according to an embodiment of the present application. [Figure 2] 2 is a schematic diagram showing the structure of multiple heating assemblies in the embodiment of FIG. 1. [Figure 3] 2 is a schematic diagram showing the structure of a plurality of magnetic conductive members in the embodiment of FIG. 1. [Figure 4] 2 is a schematic diagram showing a structure in which a plurality of excitation coils are connected in series in the embodiment of FIG. 1. FIG. [Figure 5] 2 is a schematic diagram showing the structure of a plurality of heating sleeves and heat insulating rings in the embodiment of FIG. 1. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, the technical solutions of the embodiments of the present application will be described clearly and completely with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all embodiments. Based on the embodiments of the present application, all other embodiments that can be obtained by those skilled in the art without creative efforts belong to the protection scope of the present application.

[0018] The present invention provides an atomizer for solving the problem that, in the case of conventional atomizers, when a high atomization rate is required, localized overheating of the material to be atomized is likely to occur. The present invention will be described below with reference to the drawings.

[0019] Referring to Fig. 1, an embodiment of the present application provides an atomizer. Fig. 1 is a schematic diagram showing a cross-sectional structure of the atomizer according to the embodiment of the present application. Referring to Fig. 2, Fig. 2 is a schematic diagram showing the structure of multiple heating assemblies in the embodiment of Fig. 1. Exemplarily, in one embodiment of the atomizer according to the present application, the atomizer comprises multiple heating modules 10, each of which includes a heating sleeve 11, a magnetic conductive member 12, and an excitation coil 13.

[0020] The magnetically conductive member 12 includes an induction portion 12b and two output portions 12a. The two output portions 12a are provided separately at both ends of the induction portion 12b. An exciting coil 13 is provided in the induction portion 12b. One end of the output portion 12a remote from the induction portion 12b is provided facing the heating sleeve 11 in the radial direction of the heating sleeve 11.

[0021] The heating sleeves 11 of the multiple heating assemblies 10 are arranged sequentially in the axial direction of the heating sleeve 11. At least two of the multiple induction portions 12b have different widths in the axial direction of the heating sleeve 11.

[0022] To generate a magnetic field within the coil whose strength varies over time, a current whose strength varies is typically input to the excitation coil 13, which can serve as the excitation magnetic field. Because the material of the magnetic-conductive member 12 is typically a ferromagnetic medium, the excitation magnetic field can excite the induction section 12b of the magnetic-conductive member 12 to generate an induced magnetic field. Because the material of the magnetic-conductive member 12 is typically a ferromagnetic medium, the induced magnetic field and the excitation magnetic field are conducted by the magnetic-conductive member 12 and output to the heating sleeve 11 through one end of the output section 12a, which is far from the induction section 12b. Because the strength of the excitation magnetic field varies over time, both the induced magnetic field and the excitation magnetic field vary over time. When the varying magnetic field is input to the heating sleeve 11, an eddy field is generated on the sidewall of the heating sleeve 11, generating eddy currents, which in turn generate a thermal effect of the current, thereby starting to heat the object 40.

[0023] The magnitude of the induced electromotive force generated by the eddy electric field can be calculated using Lenz's law, i.e., the magnitude of the induced electromotive force is equal to the rate of change of the excitation magnetic field and the induced magnetic field over time. As can be seen from this, the rate of change of the magnetic flux over time ultimately determines the thermal efficiency. Furthermore, according to the principles of electromagnetism, when the same current flows through the coil and the same winding density of the excitation coil 13, the strength of the excitation magnetic field is the same. If the width of the induction portion 12b in the axial direction of the heating sleeve 11 changes, the cross-sectional area of ​​the induction portion 12b in the winding direction changes. Therefore, when the winding density of the excitation coil 13 is the same and the current flows, the magnetic flux output from the magnetic-conductive member 12 corresponding to the induction portion 12b of different widths to the heating sleeve 11 will differ, resulting in different thermal efficiencies of the corresponding heating assembly 10. In other words, by controlling the width of the induction portion 12b in the axial direction of the heating sleeve 11, the thermal efficiency of the corresponding heating assembly 10 can be controlled. As can be seen from the above, the atomizer embodiments of the present application can provide different thermal efficiencies to achieve uniform heating and prevent local temperatures of the object 40 from becoming too high.

[0024] Furthermore, by controlling the thermal efficiency by the width of the induction portion 12b, it is no longer necessary to provide a power supply and a controller for each coil, which simplifies the thermal efficiency control and reduces costs.

[0025] 2 or 3, the output section 12a may be an arm on which the excitation coil 13 is not wound as shown in Fig. 2 or 3, but in other embodiments of the present application, it is not excluded that the output section 12a may still be wound with the excitation coil 13. A magnetically conductive medium is usually also ferromagnetic, and therefore can be used to generate an induction magnetic field.

[0026] 2, in some embodiments of the present application, one end of the output section 12a remote from the induction section 12b is provided facing the heating sleeve 11 in the radial direction of the heating sleeve 11. This allows as much of the induction magnetic field and the excitation magnetic field to be conducted to the heating sleeve 11 as possible, and prevents loss of magnetic field energy.

[0027] 1, the object to be heated 40 is placed in the heating sleeve 11 and heated, and the object to be heated 40 may be solid or liquid. If the object to be heated 40 is solid, the object to be heated 40 can be in direct contact with the heating sleeve 11. If the object to be heated 40 is liquid, a sealing sleeve can be provided inside each heating sleeve 11 to accommodate the liquid object to be heated 40, and the heating sleeves 11 can also be directly sealed to form a liquid storage chamber.

[0028] Referring to FIG. 4, multiple excitation coils 13 are connected in series. The impedance of each excitation coil 13 acts to drop AC current to a certain extent (similar to the voltage drop caused by resistance on DC current). The excitation coils 13 are connected in series, and when a current of varying intensity flows, the voltage drops to a certain extent each time it passes through a coil. Meanwhile, the magnitude of the impedance of each excitation coil 13 is positively correlated with the back electromotive force of its excitation magnetic field and induced magnetic field in the excitation coil 13. Furthermore, the back electromotive force can also be calculated using Lenz's law. Therefore, by connecting the coils in series, a higher voltage can be assigned to the excitation coil 13 corresponding to the wider induction portion 12b, thereby increasing thermal efficiency. Therefore, higher thermal efficiency can be achieved at locations where high thermal efficiency is required (i.e., locations corresponding to the heating sleeve 11 of the heating assembly 10, including the wider induction portion 12b), which is advantageous for controlling thermal efficiency.

[0029] Referring to FIG. 1 , in some embodiments of the present application, the atomizer further includes a printed circuit board (PCB) 20, with the joints between adjacent excitation coils 13 welded to the PCB 20. The printed circuit board (PCB) 20 allows for more diverse electrical connection methods for the excitation coils 13. The PCB 20 has multiple circuit structures, allowing for switching between parallel and series connections between the excitation coils 13. When a parallel connection is adopted, the magnitude of the voltage assigned to each excitation coil 13 can be adjusted using a variable resistor circuit, thereby enabling more precise control of thermal efficiency. Of course, welding the excitation coils 13 to the PCB 20 is merely for fixing and positioning purposes, and embodiments without electrical connection are not excluded. Furthermore, the atomizer may include a battery 30 electrically connected to the PCB 20 to supply power to the excitation coils. The PCB 20 may also include an AC generator 60 for converting direct current from the battery 30 into alternating current and supplying the AC current to the excitation coils 13. By installing the battery 30, the atomizer does not require a fixed power source, making it convenient for travel and portability.

[0030] Referring to FIG. 1 , in some embodiments of the present application, the heating assembly 10 has a vapor discharge direction along the axial direction of the heating sleeve 11, and the widths of the multiple induction sections 12b in the vapor discharge direction decrease one by one along the vapor discharge direction. These embodiments are highly effective when the object 40 to be heated is a solid. When the object 40 to be heated is a solid, the gas generated by heating mixes with the object 40, thereby heating the object 40 downstream of the gas. As the gas moves along the vapor discharge direction, the temperature of the object 40 gradually increases after being heated by the gas in the vapor discharge direction. When a hotter object 40 is heated, less heating power is required. This allows the object 40 to be atomized while avoiding overheating and denaturing the object 40. Additionally, this configuration is equally effective for liquids, although the reasons are different. Unless boiling occurs, vaporization of a liquid often occurs at the gas-liquid interface. However, thermal convection also occurs within the liquid (of course, gases also have thermal convection, and convection also occurs in the gas generated when a solid is heated. Under certain conditions, the object 40 in the vapor release direction is heated by the gas). Therefore, it is still necessary to reduce the thermal efficiency in the vapor release direction. However, reducing the thermal efficiency in the vapor release direction alone is not considered an embodiment of the present invention. It is also possible to increase the thermal efficiency in the vapor release direction. For example, if the heat does not easily reach the center of the object 40 due to the large radial size of the heating sleeve 11 of the object 40, it is impossible to vaporize the object 40 in one go at the bottom of the heating assembly 10 opposite the vapor release direction. As a result, heat cannot reach the center of the object 40 through heat transfer. At the same time, the outer part of the object 40 vaporizes and absorbs a large amount of heat, preventing the center from vaporizing. In this case, in order to heat uniformly, a heating assembly 10 with a small heating power is installed at the bottom opposite the steam release direction, and the heating efficiency is gradually increased in the steam release direction, thereby adapting to the gradually rising temperature of the heated object 40 and achieving the effect of uniform heating.

[0031] The vapor emission direction will be described with reference to FIG. 1 or FIG. 2. The vapor emission direction of an atomizer that naturally produces mist is usually opposite to the direction of gravity and along the axial direction of the heated sleeve 11. Examples include some air humidifiers. However, there are also atomizers with negative pressure, such as atomizers for inhalation therapy used in hospitals. In this case, the vapor emission direction is along the direction of decreasing pressure, regardless of the direction of gravity. Of course, the atomization direction of an atomizer with negative pressure is often also along the axial direction of the heated sleeve 11.

[0032] 1 or 2, in some embodiments of the present application, adjacent magnetic conductive members 12 are spaced apart from each other. The heatedest position on the heating sleeve 11 is the position directly opposite the output portion 12a of the magnetic conductive member 12, so by spaced apart from each other, heat from one heating sleeve 11 is less likely to be transferred to an adjacent heating sleeve 11, thereby improving the accuracy of thermal efficiency control.

[0033] 2, in some embodiments of the present application, the end face of the output part 12a at one end facing the heating sleeve 11 matches the surface of the heating sleeve 11. This reduces the volume of the air gap formed between the end face of the output part 12a facing the heating sleeve 11 and the heating sleeve 11, preventing magnetic flux leakage therein and increasing the utilization rate of magnetic energy, thereby making the atomizer more energy-efficient.

[0034] 4, in some embodiments of the present application, the coil winding density of the multiple excitation coils 13 is the same. According to the principles of electromagnetism, the strength of the magnetic field generated inside the excitation coil 13, i.e., the strength of the excitation magnetic field, is directly proportional to the product of the winding density and the strength of the current in the coil. Therefore, when different excitation coils 13 have the same winding density and the same current flows, the strength of the excitation magnetic field is equal, and the heating efficiency is related only to the width of the induction portion 12b in the axial direction of the heating sleeve 11, making it easy to control the thermal efficiency.

[0035] 1 and 5, in some embodiments of the present application, the atomizer further includes a heat insulating ring 50, which is disposed between adjacent heating sleeves 11. This prevents heat transfer between the heating sleeves 11, and allows for more precise control of heating efficiency.

[0036] 5, in some embodiments of the present application, the heating sleeve 11 is cylindrical. Because the cylindrical heating sleeve 11 has axial rotational symmetry, the distance from any point on the central axis of the object to be heated 40 to the inner wall of the heating sleeve 11 is equal, which is advantageous for uniformly transferring heat to the center of the object to be heated 40, making the heating more uniform.

[0037] Referring to Figure 5, optionally, the thickness of the walls of the heating sleeves 11 may be the same. Because eddy currents flow along the extension direction of the walls of the heating sleeves 11, the thicker the walls, the larger the cross-sectional area of ​​the walls perpendicular to the flow of eddy currents, and the smaller the resistance of the walls to the eddy currents. As can be seen from this, the thermal efficiency varies depending on the thickness of the walls. Therefore, by making the thicknesses of the walls of the heating sleeves 11 the same, the influence of the walls on the heating efficiency can be eliminated, making it easier to control the heating efficiency.

[0038] In the above embodiments, the description of each embodiment has its own emphasis, and for the parts not described in detail in one embodiment, reference can be made to the relevant descriptions of other embodiments.

[0039] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and are not understood to indicate or imply relative importance or the number of the designated technical features. Thus, a feature qualified by "first" or "second" may explicitly or implicitly include one or more features.

[0040] The atomizer according to the embodiment of the present application has been introduced in detail above. In this specification, the principles and embodiments of the present application are explained using specific examples. The above description of the embodiments is intended to help understand the method and core idea of ​​the present application. Furthermore, those skilled in the art may make changes to the specific embodiments and application scope based on the idea of ​​the present application. In summary, this specification should not be construed as limiting the present application. [Explanation of symbols]

[0041] 10...heating assembly, 11...heating sleeve, 12...magnetic conductive member, 12a...output section, 12b...induction section, 13...excitation coil, 20...printed circuit board (PCB), 30...battery, 40...object to be heated, 50...insulating ring, 60...AC generator

Claims

1. An atomizer, The atomizer includes a plurality of heating assemblies, each of which includes a heating sleeve, a magnetic conductive member, and an excitation coil; the magnetically conductive member includes an induction portion and two output portions, the two output portions being separately provided at both ends of the induction portion, the induction portion being provided with the excitation coil, and one end of the output portion farther from the induction portion being provided opposite the heating sleeve in the radial direction of the heating sleeve, The heating sleeves of the plurality of heating assemblies are sequentially arranged in an axial direction of the heating sleeve, and at least two of the plurality of induction portions have different widths in the axial direction of the heating sleeve. An atomizer characterized by:

2. A plurality of the excitation coils are connected in series in sequence.

2. The atomizer of claim 1.

3. The atomizer further includes a printed circuit board (PCB), and coupling portions of adjacent excitation coils are welded to the PCB.

3. The atomizer according to claim 2.

4. The heating assembly has a steam discharge direction along an axial direction of the heating sleeve, and widths of the plurality of induction portions in the steam discharge direction decrease one by one along the steam discharge direction.

2. The atomizer of claim 1.

5. Adjacent magnetic conductive members are spaced apart from each other.

2. The atomizer of claim 1.

6. an end surface of the output portion facing the heating sleeve matches the surface of the heating sleeve; 2. The atomizer of claim 1.

7. The coil winding density of the plurality of excitation coils is the same.

2. The atomizer of claim 1.

8. The atomizer further includes an insulating ring, the insulating ring being disposed between adjacent heating sleeves.

2. The atomizer of claim 1.

9. The heating sleeve is cylindrical.

2. The atomizer of claim 1.

10. The thickness of the cylindrical walls of the plurality of heating sleeves is the same.

10. The atomizer of claim 9.

11. the atomizer further comprises a battery electrically connected to the PCB for powering the excitation coil; 4. The atomizer according to claim 3.

12. the PCB is further provided with an AC generator for converting DC current from the battery into AC current; 12. The atomizer of claim 11.

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