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 liquids or sublimating solids. In the process of generating gas, the material to be atomized needs to be heated. When heating the material to be atomized, it is necessary to ensure uniform heating, so as to avoid the following problem: local overheating may cause chemical reactions such as decomposition or oxidation of the heated material, resulting in denaturation of the material, and as a result, the final generated mist may lose its original properties and fail to achieve the expected effect. In the prior art, a single heat source is usually used to heat the material to be atomized. When a high atomization speed is required, it is easy to cause local overheating, resulting in denaturation of the material to be atomized. Summary of the Invention [Problem to be solved by the invention]

[0003] The embodiments of the present application provide an atomizer for solving the problem that conventional atomizers are prone to localized overheating of the material 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 of which includes a heating sleeve, a magnetic conductive member, and an excitation coil. The magnetic conductive member includes an induction section and two output sections, the two output sections being provided at both ends of the induction section separately, the induction section being provided with an excitation coil, and one end of the output section farther from the induction section being provided facing 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 joints of adjacent excitation coils are welded to the PCB.

[0007] In some embodiments, the heating assembly has a steam emission direction along the axial direction of the heating sleeve, and the widths of the multiple induction portions in the steam emission direction decrease one by one along the steam emission 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 thickness that is the same. Effect of the Invention

[0014] In the atomizer according to the embodiment of the present application, at least two of the induction parts of the multiple magnetic conductive members have different widths in the axial direction of the heating sleeve, so that when the same current flows through the excitation coil, the magnetic flux of the induced magnetic field generated by the induction parts with different widths is also different. According to Lenz's law, the induced electromotive force is equal to the rate of change of the magnetic flux according to time, so the induced electromotive force output to the heating sleeve by the induction part with a small magnetic flux is also small, and the thermal efficiency of the eddy current generated in the heating sleeve is also low. Therefore, the thermal efficiency of the corresponding heating assemblies is different due to the induction parts with different widths. When the different heating assemblies heat the heated material, the temperature of different parts of the heated material is different due to the thermal convection effect, so that the heated material in different parts cannot be heated with the same thermal efficiency. Otherwise, the part with the higher temperature will overheat. In the atomizer according to the embodiment of the present application, at least two heating assemblies can provide heating with different powers, so that local overheating can be avoided. In addition, since multiple heating assemblies are adopted, a large heating efficiency can be guaranteed. As described above, the atomizer provided in the embodiment of the present application can avoid local overheating of the substance to be atomized when achieving a high atomization speed. [Brief description 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 advantageous 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. [Diagram 2] FIG. 2 is a schematic diagram showing the structure of multiple heating assemblies in the embodiment of FIG. 1. [Diagram 3] 2 is a schematic diagram showing a 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. [Diagram 5] 2 is a schematic diagram showing the structure of a plurality of heating sleeves and insulating rings in the embodiment of FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[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 a person skilled in the art can obtain without creative efforts belong to the protection scope of the present application.

[0018] The present invention provides an atomizer for solving the problem that a material to be atomized is easily overheated locally when a high atomization rate is required in the case of a conventional atomizer. Hereinafter, the present invention will be described 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 an atomizer according to an 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 magnetic conductive member 12 includes an induction portion 12b and two output portions 12a. The two output portions 12a are provided separately on 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 sequentially arranged 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] In order to form a magnetic field in the coil whose strength changes with time, a current whose strength changes is usually input to the excitation coil 13, and this magnetic field can be an excitation magnetic field. Since the material of the magnetic conductive member 12 is usually a ferromagnetic medium, the excitation magnetic field can excite the induction part 12b of the magnetic conductive member 12 to generate an induced magnetic field. Also, since the material of the magnetic conductive member 12 is usually a ferromagnetic medium, the induced magnetic field and the excitation magnetic field can be conducted by the magnetic conductive member 12 and output to the heating sleeve 11 through one end of the output part 12a far from the induction part 12b. Since the strength of the excitation magnetic field changes with time, both the induced magnetic field and the excitation magnetic field change with time. When the changing magnetic field is input to the heating sleeve 11, an eddy electric field is generated on the side wall of the heating sleeve 11, so that an eddy current is generated, and further, a thermal effect of the current occurs, and the heated object 40 starts to be heated.

[0023] The magnitude of the induced electromotive force that generates the eddy electric field can be calculated by Lenz's law, that is, the magnitude of the induced electromotive force is equal to the rate of change of the excitation magnetic field and the induced magnetic field with respect to time. As can be seen from this, it is the rate of change of the magnetic flux with time that ultimately determines the thermal efficiency. Also, as can be seen from the principle of electromagnetism, when the same intensity of current flows through the coil and the winding density of the excitation coil 13 is the same, the intensity of the excitation magnetic field is the same. If the width of the induction part 12b in the axial direction of the heating sleeve 11 changes, the cross-sectional area of ​​the induction part 12b in the winding direction changes, so when the winding density of the excitation coil 13 is the same and the current flowing is the same, the magnetic flux output from the magnetic conductive member 12 corresponding to the induction part 12b of different widths to the heating sleeve 11 is different, and as a result, the thermal efficiency of the corresponding heating assembly 10 is different. In other words, by controlling the width of the induction part 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 the local temperature of the object to be heated 40 from becoming too high.

[0024] Furthermore, by controlling the thermal efficiency by the width of the induction portion 12b, it becomes unnecessary to provide a power source and a controller for each coil, which simplifies the thermal efficiency control and reduces the cost.

[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 the induction magnetic field and the excitation magnetic field to be conducted to the heating sleeve 11 as much as possible, and prevents the loss of magnetic field energy.

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

[0028] Referring to FIG. 4, a plurality of excitation coils 13 are connected in series in sequence. The impedance of the excitation coils 13 has a certain degree of step-down effect on AC current (similar to the step-down effect of resistance on DC current). The excitation coils 13 are connected in series with each other, and when a current of varying current intensity flows, the voltage drops to a certain degree each time it passes through the coil. On the other hand, the magnitude of the impedance of the excitation coil 13 and the back electromotive force of the excitation magnetic field and the induced magnetic field at the excitation coil 13 are positively correlated, and the back electromotive force can also be calculated by Lenz's law. Therefore, by connecting the coils in series, a higher voltage can be assigned to the excitation coil 13 corresponding to the induction portion 12b having a larger width, thereby increasing the thermal efficiency. Therefore, a higher thermal efficiency can be obtained at a position where a high thermal efficiency is required (i.e., a position corresponding to the heating sleeve 11 of the heating assembly 10 including the induction portion 12b having a larger width), which is advantageous for controlling the thermal efficiency.

[0029] Referring to FIG. 1, in some embodiments of the present application, the atomizer further includes a printed circuit board (PCB) 20, and the joints of adjacent excitation coils 13 are welded to the PCB 20. The printed circuit board (PCB) 20 can provide more diversified electrical connection methods for the excitation coils 13. Since the PCB 20 has many circuit structures, it can realize switching between parallel connection and series connection between the excitation coils 13. When adopting parallel connection, the magnitude of the voltage allocated to the different excitation coils 13 can be arranged by a variable resistance circuit, so that the thermal efficiency can be more precisely controlled. Of course, the welding between the excitation coils 13 and the PCB plate 20 is only for fixing and positional restriction, and an embodiment in which no electrical connection is realized is not excluded. In addition, the atomizer can also include a battery 30 electrically connected to the PCB 20 to supply power to the excitation coils. The PCB 20 can also be provided with an AC generator 60 for converting a direct current from the battery 30 into an alternating current and supplying the alternating current to the excitation coils 13. By installing the battery 30, the atomizer does not require a fixed power source, making it convenient for movement and portability.

[0030] Referring to FIG. 1, in some embodiments of the present application, the heating assembly 10 has a steam discharge direction along the axial direction of the heating sleeve 11, and the width of the multiple induction parts 12b in the steam discharge direction decreases one by one along the steam discharge direction. These embodiments are very effective when the heated object 40 is a solid. When the heated object 40 is a solid, the gas generated by heating mixes with the heated object 40, and thus heats the heated object 40 downstream of the gas, and the gas moves along the steam discharge direction, so that the temperature of the heated object 40 gradually increases after the heated object 40 is heated by the gas in the steam discharge direction. When a heated object 40 with a higher temperature is heated, a smaller heating power is required. This allows the heated object 40 to be atomized, while at the same time avoiding the heated object 40 from being overheated and denatured. In addition, such an installation is equally effective for liquids, but the cause is different. Unless boiling, vaporization of liquid often occurs at the gas-liquid interface, but there is thermal convection inside the liquid (of course, gas also has thermal convection, so convection also occurs in the gas generated when heating a solid, and under some conditions, the heated object 40 in the vapor emission direction is heated by the gas), so it is still necessary to reduce the thermal efficiency in the vapor emission direction. However, it cannot be considered that only reducing the thermal efficiency in the vapor emission direction is an embodiment of the present application. Because it is also possible to increase the thermal efficiency in the vapor emission direction. For example, if the heat is difficult to enter the center position of the heated object 40 due to the large radial size of the heating sleeve 11 of the heated object 40, it is impossible to vaporize the heated object 40 at the bottom of the heating assembly 10 opposite to the vapor emission direction in one go, and as a result, the heat cannot reach the center position of the heated object 40 by heat transfer, and at the same time, the outside of the heated object 40 vaporizes and absorbs a large amount of heat, so the center position cannot be vaporized. 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 emission direction, and the heating efficiency is gradually increased in the steam emission direction, thereby adapting to the heated object 40, which gradually rises in temperature, and achieving the effect of uniform heating.

[0031] The steam emission direction will be described with reference to FIG. 1 or FIG. 2. The steam emission direction of an atomizer that naturally produces mist is usually opposite to the direction of gravity and along the axial direction of the heating sleeve 11. For example, some air humidifiers can be mentioned. However, of course, there are atomizers with negative pressure, such as atomizers for inhalation therapy used in hospitals. In this case, the steam 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 heating sleeve 11.

[0032] 1 or 2, in some embodiments of the present application, adjacent magnetic conductive members 12 are spaced apart from each other. Since the most heated position on the heating sleeve 11 is the position directly opposed to the output portion 12a of the magnetic conductive member 12, by spaced apart from each other, heat from the heating sleeve 11 is less likely to be transmitted to the adjacent heating sleeve 11, and the accuracy of thermal efficiency control can be improved.

[0033] 2, in some embodiments of the present application, the end face of one end of the output part 12a 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, thereby avoiding magnetic flux leakage therein, improving the utilization rate of magnetic energy, and thus 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 principle 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, so when the winding densities of the different excitation coils 13 are the same and the same current flows, the strength of the excitation magnetic field is equal, and the heating efficiency is only related to the width of the induction portion 12b in the axial direction of the heating sleeve 11, which makes 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 avoids 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 provided in a cylindrical shape. Since the cylindrical heating sleeve 11 has axial rotational symmetry, the distance from any point on the central axis of the heated object 40 to the inner wall of the heating sleeve 11 is equal, which is advantageous for the heat to be uniformly transferred to the center of the heated object 40, and can make the heating more uniform.

[0037] Referring to Fig. 5, optionally, the thickness of the cylinder walls of the heating sleeves 11 is set to be the same. Since eddy currents flow along the extension direction of the cylinder walls of the heating sleeves 11, the thicker the cylinder walls, the larger the cross-sectional area of ​​the cylinder walls in the cross section perpendicular to the flow of eddy currents, and the smaller the resistance of the cylinder walls to the eddy currents. As can be seen from this, the thermal efficiency varies depending on the thickness of the cylinder walls, so by setting the cylinder walls of the heating sleeves 11 to have the same thickness, the effect of the cylinder walls on the heating efficiency can be eliminated, and the heating efficiency can be more conveniently controlled.

[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 present description, the terms "first" and "second" are used for descriptive purposes only and are not understood to indicate or imply a relative importance or number of the technical features referred to. Thus, a feature qualified with "first" or "second" may explicitly or implicitly include one or more features.

[0040] Above, the atomizer according to the embodiment of the present application has been introduced in detail. In this specification, the principle and embodiment of the present application are described using specific examples. The above description of the embodiment is for understanding the method of the present application and its core idea. In addition, those skilled in the art may make changes to the specific embodiment and application scope based on the idea of ​​the present application. In summary, this specification should not be understood as limiting the present application. [Explanation of symbols]

[0041] 10...heating assembly, 11...heating sleeve, 12...magnetic conductive member, 12a...output section, 12b...inductive 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 magnetic 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 adjacent coupling portions of the 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 are reduced one by one along the steam discharge direction.

2. The atomizer of claim 1.

5. The adjacent magnetic conductive members are spaced apart from each other.

2. The atomizer of claim 1.

6. An end surface of one end of the output portion facing the heating sleeve matches a 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 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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