WO2025001384A1 - Heater and atomization device - Google Patents

Abstract

A heater (100) and an atomization device. The heater (100) for the atomization device comprises a winding layer (10), the winding layer (10) comprising spiral coils (11), and the spiral coils (11) generating magnetic fields after being energized; and a heating member (20), the heating member (20) being arranged on one side of the winding layer (10), the heating member (20) being an elongated member, and some of magnetic force lines of the magnetic fields being perpendicular to and passing through the longitudinal section of the heating member (20).

Description

Heater and atomizer

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based on the Chinese patent application with application number 202310781034.8 and application date June 28, 2023, and claims the priority of the above-mentioned Chinese patent application. The entire content of the above-mentioned Chinese patent application is hereby introduced into this application as a reference.

Technical Field

The present application belongs to the technical field of electronic cigarettes, and specifically, the present application relates to a heater and an atomization device.

Background Art

The main heating methods used in the current heat-not-burn e-cigarette market include resistance heating and electromagnetic heating. Among them, the electromagnetic heating system includes electromagnetic heaters and electromagnetic induction heating coils.

The existing coil winding method usually adopts the method of circular straight winding of the coil, and the magnetic lines of force generated spread outward from the center of the coil to form a closed loop. The length direction of the metal heating tube or metal heating needle located in the center of the induction heating coil is parallel to the magnetic lines of force formed. Since the magnetic lines of force are parallel to the length direction of the heating body, the magnetic lines of force that penetrate the cross section of the heating body are limited, and its heating efficiency is low.

Summary of the invention

The present application aims to solve one of the technical problems in the related art at least to some extent.

To this end, one purpose of the present application is to propose a new technical solution for a heater for an atomization device, which can solve the technical problem of low heating efficiency caused by the direct winding method of the coil used in the prior art.

Another object of the present application is to provide an atomization device.

According to a first aspect of the present application, a heater for an atomization device is provided, comprising: a winding layer, the winding layer comprising a solenoid coil, the solenoid coil generating a magnetic field when energized; a heating element, the heating element being arranged on one side of the winding layer, the heating element being a long strip, a portion of the magnetic field lines of force of the magnetic field being vertical and passing through a longitudinal section of the heating element.

The heater for the atomization device according to the present application is mainly composed of a winding layer and a heating element. The direction of the magnetic lines of force formed by the winding layer is perpendicular to the longitudinal section of the heating element, thereby increasing the effective area of the magnetic lines of force penetrating the heating element and improving the heating efficiency.

According to a second aspect of the present application, an atomization device is provided, comprising the above-mentioned heater for an atomization device.

The atomizing device according to the present application has the advantage of high heating efficiency.

Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a partial expanded view of a heater provided in an embodiment of the present application;

FIG2 is a schematic structural diagram of a winding layer of a heater provided in an embodiment of the present application;

FIG3 is a schematic diagram of the coordination of a winding layer and a heating element of a heater provided in an embodiment of the present application;

FIG4 is a magnetic field distribution diagram generated by a winding layer provided in an embodiment of the present application;

FIG5 is a distribution diagram of magnetic lines of force generated by a winding layer provided in an embodiment of the present application;

FIG6 is a schematic diagram of a winding layer provided in an embodiment of the present application;

FIG7 is a schematic diagram of another winding layer provided in an embodiment of the present application;

FIG. 8 is a schematic diagram of another winding layer provided in an embodiment of the present application.

DETAILED DESCRIPTION

Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

The following first describes in detail the heater 100 for an atomization device according to an embodiment of the present application with reference to the accompanying drawings.

As shown in FIGS. 1 to 8 , a heater 100 for an atomization device according to an embodiment of the present application includes a winding layer 10 and a heating element 20 .

Specifically, the winding layer 10 includes a solenoid coil 11 , which generates a magnetic field when energized. The heating element 20 is disposed on one side of the winding layer 10 . The heating element 20 is a long strip, and a portion of the magnetic field lines are vertical and pass through the longitudinal section of the heating element 20 .

In other words, the heater 100 for the atomization device according to the embodiment of the present application is mainly composed of a winding layer 10 and a heating element 20. The winding layer 10 includes a solenoid coil 11 that can generate a magnetic field after being energized. The solenoid coil 11 is a multi-ring coil formed by winding. The solenoid coil 11 and the heating element 20 can cooperate with each other to realize electromagnetic induction heating.

It should be noted that the heating element 20 is located on one side of the winding layer 10. The heating element 20 is a long strip with a central axis direction. For example, the heating element 20 is a conductor extending in the up-down direction. Since more magnetic lines of force of the magnetic field generated by the solenoid coil 11 after power-on are perpendicular to the longitudinal section of the heating element 20, and since the heating element 20 is a long strip with a longitudinal section larger than the cross section, the magnetic lines of force penetrate a larger effective area of the heating element 20, and the heating efficiency is higher. Among them, the longitudinal section of the heating element 20 is a section obtained along a plane passing through the axial direction of the heating element 20, and the cross section of the heating element 20 is a section obtained along a plane passing through the axial direction of the heating element 20, and the cross section of the heating element 20 is a section obtained along a plane perpendicular to the axial direction of the heating element 20.

Compared with the existing heating coil wound around the cylindrical heating body, the direction of the magnetic field lines of the existing heating coil is just parallel to the heating body, the number of magnetic field lines penetrating the metal heating body is limited, and the energy generated is also limited. Some heating coils have a low heating efficiency. In comparison, as shown in FIG4 and FIG5, the direction of the magnetic force lines generated by the spiral coil 11 of the embodiment of the present application is just perpendicular to the heating element 20. The more the magnetic force lines penetrate the heating element 20, the larger the eddy currents generated, the larger the effective area of the magnetic force lines penetrating the heating element 20, the better the heating effect, and the higher the heating efficiency.

Therefore, according to the embodiment of the present application, the heater 100 for the atomization device is mainly composed of a winding layer 10 and a heating element 20. By making the direction of the magnetic lines of force formed by the winding layer 10 perpendicular to the longitudinal section of the heating element 20, the effective area of the magnetic lines of force penetrating the heating element is increased, thereby improving the heating efficiency.

According to one embodiment of the present application, the winding layer 10 includes a plurality of spiral coils 11, which cooperate to form a receiving space, and the heating element 20 is located in the receiving space. By using a plurality of spiral coils 11 to cooperate with each other, not only a stronger magnetic field strength can be generated near the heating element 20.

In some specific embodiments of the present application, as shown in FIGS. 6 to 8 , the winding layer 10 includes an even number of spiral coils 11, for example, the winding layer 10 includes 2, 4, etc. spiral coils 11. For example, by limiting the even number of spiral coils 11, when the winding layer 10 is wrapped into a cylindrical shape, at least one spiral coil 11 can generate magnetic lines of force in a semi-cylindrical three-dimensional space, and the magnetic field lines of force generated in each semi-cylindrical space are stronger and more numerous. It can be seen that in this embodiment, by using an even number of spiral coils 11, it is possible to avoid the mutual cancellation of magnetic lines of force, so that the heating element 20 absorbs more energy and has higher efficiency.

According to one embodiment of the present application, the winding layer 10 includes a first spiral coil and a second spiral coil, the first spiral coil and the second spiral coil are arranged opposite to each other, and the magnetic fields are superimposed when they are turned on. In other words, a synergistic effect can be generated by the first spiral coil and the second spiral coil, thereby increasing the magnetic field strength and the heating uniformity. For example, the heating element 20 is a cylindrical element extending in the up-down direction, the first spiral coil is arranged on the left side of the heating element 20, and the second spiral coil is arranged on the right side of the heating element 20, so that the two oppositely arranged sides of the heating element 20 can be heated simultaneously.

In some specific embodiments of the present application, the central axes of the first spiral coil and the second spiral coil overlap with each other, which is beneficial to improving the winding efficiency and improving the heating uniformity of different areas on the heating element 20.

According to an embodiment of the present application, the central axis of the first spiral coil or the second spiral coil passes through the longitudinal section of the heating element, which can increase the number of magnetic lines of force passing through the longitudinal section of the heating element, thereby further improving the heating efficiency.

In some specific embodiments of the present application, as shown in FIG. 6 to FIG. 8 , a plurality of solenoid coils 11 are interconnected to improve the winding efficiency, and the direction of the magnetic lines of force can be controlled simply by changing the winding direction.

According to an embodiment of the present application, a plurality of spiral coils 11 are connected in series to facilitate forming a plurality of spiral coils 11 by winding one coil, thereby improving the efficiency of processing and manufacturing.

According to an embodiment of the present application, as shown in FIGS. 6 to 8 , the winding directions of two adjacent solenoid coils 11 are opposite. For example, the first solenoid coil and the second solenoid coil are connected in series and have opposite winding directions, so that when the solenoid coils 11 are turned on, the magnetic fields can be superimposed. In this embodiment, when the solenoid coils 11 generate magnetic fields, the currents on the adjacent solenoid coils 11 are kept in the same direction to avoid When the currents are in different directions, the magnetic fields generated by adjacent coils will cancel each other out, which will reduce the magnetic field strength and variation and affect the heating efficiency. In this embodiment, the currents of adjacent spiral coils 11 are kept in the same direction by limiting the winding direction, for example, starting from the starting point, winding half counterclockwise, and then winding the other half clockwise until returning to the end point.

In some specific embodiments of the present application, as shown in Figures 6 to 8, the shape of the spiral coil 11 is quasi-circular, quasi-rectangular or quasi-polygonal, etc. That is to say, the design pattern of the spiral coil 11 is not limited to the runway shape, but can also be a rectangle, mosquito coil shape, diamond shape and other similar shapes. For example, when the winding layer 10 is unfolded, the winding layer 10 is a parallel line formed by a runway line of copper foil with a certain width and thickness, and two vertical lines extend downward from the starting point of the center of the runway, and the two vertical lines can be connected to the control mainboard as the two poles of the coil.

In some specific embodiments of the present application, as shown in Figures 2 and 3, at least a portion of the winding layer 10 is a curved surface. That is, in this embodiment, the winding form of the spiral coil 11 is different from the traditional circular straight winding method, and a plane winding is used to form a curved surface shape, so that it can be three-dimensionally wrapped around the outside of at least a portion of the heating element 20.

For example, a planar spiral coil 11 is wound around a cylindrical heating element 20 to form a cylindrical U-shaped element, and two oppositely disposed spiral coils 11 cooperate to form a hollow cylindrical space, and the winding layer 10 can completely wrap the heating element 20. After being wrapped into a cylindrical structure, the current directions of the two spiral coils 11 at the joint are consistent.

According to one embodiment of the present application, as shown in FIGS. 2 and 3 , at least a portion of the winding layer 10 is a U-shaped member bent toward the location of the heater 20 , so as to form a three-dimensional shape and correspond to more locations on the heater 20 .

In some specific embodiments of the present application, the central axis direction of the spiral coil 11 is perpendicular to the central axis direction of the heating element 20. For example, the central axis direction of the spiral coil 11 is horizontal, and the axial direction of the heating element 20 is vertical, so as to control more magnetic lines of force to be vertical and pass through the longitudinal section of the heating element 20.

According to an embodiment of the present application, as shown in FIG. 1 , the heater 100 for the atomization device further includes a substrate 30 , on which a winding layer 10 is disposed. The substrate 30 can support and limit the winding layer 10 .

In some specific embodiments of the present application, the substrate 30 is a flexible part, for example, the substrate 30 is a flexible circuit board (FPC), etc. The flexible circuit board and the winding layer 10 can form an FPC coil. The FPC coil can withstand a higher temperature than the multi-strand wire of the prior art, and the FPC coil is very thin. For the winding coil, the FPC coil can minimize the capacitance energy loss formed by the relative cross-sectional area between adjacent coils. In addition, the entire coil of the FPC coil is very thin and occupies a small space. For the stacked structure along the radial direction of the heating element 20, the diameter of the atomizing device can be made relatively small, so that the atomizing device product itself can be made small and beautiful.

Among them, the flexible circuit board is a printed circuit made of polyester film or polyimide as a substrate with high reliability and excellent flexibility. It can be bent at will and has the advantages of light weight, small size, good heat dissipation and easy installation. In this embodiment, the substrate 30 is prepared by using a flexible material piece, and the flat substrate 30 can be The winding layer 10 is arranged on the substrate 30, and the winding layer 10 can also be in a planar shape. Then, the substrate 30 can be deformed, and the winding layer 10 can be deformed together with the bent substrate 30, so as to guide the direction of the magnetic lines of force. For example, the substrate 30 is bent so that the winding layer 10 is formed into a U-shaped part with an opening facing the heating element 20, which has the advantage of simple assembly process.

Optionally, the substrate 30 is made of an insulating film, such as polyester material and polyimide. The substrate 30 formed of such material needs to be non-stable, have stable geometric dimensions, have high tear strength, and be able to withstand high temperatures above 250°C.

According to one embodiment of the present application, the heating element 20 is needle-shaped or sheet-shaped, etc. During installation, the winding layer 10 can be arranged outside the needle-shaped or sheet-shaped heating element 20. The needle-shaped heating element 20 is conducive to making a smaller atomizing device, and the sheet-shaped heating needle 20 is conducive to making a flat atomizing device.

In some specific embodiments of the present application, the large surface of the sheet-shaped heating element 20 is perpendicular to the magnetic field lines generated by the spiral coil, wherein the sheet-shaped heating element 20 means that the heating element 20 can be formed into a sheet structure, and the heating element 20 can have a long side, a wide side and a thick side. The large surface can be defined as a surface formed by the long side and the wide side, and has a large area. In this embodiment, by limiting the large surface of the sheet-shaped heating element 20 to be perpendicular to the magnetic field lines generated by the spiral coil, the area where the magnetic field lines pass through the sheet-shaped heating element 20 can be increased.

According to one embodiment of the present application, the heating element 20 is a tubular element, which is convenient for cooperation with the spiral coil 11 to improve the uniformity of the magnetic field, thereby heating different positions on the heating element 20 more evenly.

That is to say, the heating element 20 can be a long strip such as a heating tube, a heating needle or a heating plate.

According to one embodiment of the present application, the spiral coil 11 includes a conductor, and the conductor on the FPC coil can be made of metal materials such as silver foil, copper foil, 304 stainless steel, 430, etc. When copper foil is used as a conductor, the cost can be reduced. Among them, copper foil can be divided into two types: electrolytic copper and rolled copper. It can be formed by electrodeposition (ED for short) or plating. It is a flexible material that can be made into many thicknesses and widths. In addition to flexibility, this type of copper foil also has the characteristics of hardness and smoothness, which is convenient for deformation with the substrate 30.

In some specific embodiments of the present application, the spiral coil 11 can be bonded to the substrate 30 by an adhesive, for example, bonding an insulating film to a conductive copper foil. In addition, the adhesive can also be used as a covering layer, as a protective coating, and as a covering coating.

According to an embodiment of the present application, the copper foil width and thickness of the FPC coil can be designed according to specific design requirements, and the number of layers can be two or more.

In some specific embodiments of the present application, when an FPC circuit board is used as the substrate 30, the substrate 30 and the winding layer 10 can be combined to form an FPC coil. Since the FPC coil has the characteristic of a very thin structure, it occupies very little space. The FPC coil can be attached to a thermal insulation material layer, and then a magnetic shielding material layer can be covered on the outside of the FPC coil for shielding. Optionally, another thermal insulation material layer can be covered on the outside of the magnetic shielding material layer. Although the thermal insulation material layer and the magnetic shielding material layer are provided, since the FPC coil occupies a small space, the diameter of the resulting chimney is still relatively small. The obtained atomizing device has the advantages of being small and beautiful.

In addition, in order to ensure the stability of the winding pitch, number of turns and the inductance formed by the existing coil wound by copper wire, it is necessary to add an additional coil bracket, make a fixed thread groove on the bracket, and the copper wire is wound in the manner of the groove. However, the FPC coil of the embodiment of the present application does not require a coil bracket, which is very helpful for saving costs and simplifying the assembly process. In addition, because the coil circuit is composed of copper foil formed by etching, the precision is relatively high, so the inductance of the coil formed by it is consistent, so the efficiency of each product is consistent when heated.

The present application also provides an atomizing device, which includes the heater 100 for the atomizing device of any of the above embodiments. Since the heater 100 of the embodiment of the present application has the advantage of high heating efficiency, the atomizing device of the embodiment of the present application also has the same advantage, which will not be described in detail here.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means the specific features, structures, materials or characteristics described in conjunction with the embodiment or example. Included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims (19)

A heater (100) for an atomizing device, comprising: A winding layer (10), the winding layer (10) comprising a solenoid coil (11), the solenoid coil (11) generating a magnetic field when energized; A heating element (20), the heating element (20) is arranged on one side of the winding layer (10), the heating element (20) is a long strip, and a part of the magnetic field lines of the magnetic field is vertical and passes through the longitudinal section of the heating element (20). The heater (100) for an atomizing device according to claim 1, wherein the winding layer (10) comprises a plurality of the spiral coils (11), the plurality of the spiral coils (11) cooperate to form a receiving space, and the heating element (20) is located in the receiving space. The heater (100) for an atomizing device according to claim 2, wherein the winding layer (10) comprises an even number of the spiral coils (11). The heater (100) for an atomizing device according to claim 3, wherein the winding layer (10) comprises a first solenoid coil and a second solenoid coil, the first solenoid coil and the second solenoid coil are arranged opposite to each other, and the magnetic fields are superimposed when they are turned on. The heater (100) for an atomization device according to claim 4, wherein central axes of the first spiral coil and the second spiral coil coincide with each other. The heater (100) for an atomization device according to claim 4, wherein a central axis of the first spiral coil or the second spiral coil passes through a longitudinal section of the heating element (20). The heater (100) for an atomizing device according to claim 2, wherein a plurality of the spiral coils (11) are connected to each other. The heater (100) for an atomizing device according to claim 7, wherein a plurality of the solenoid coils (11) are connected in series. The heater (100) for an atomizing device according to claim 2, wherein the winding directions of two adjacent spiral coils (11) are opposite. The heater (100) for an atomization device according to any one of claims 1 to 9, wherein the shape of the spiral coil (11) is circular, rectangular or polygonal. The heater (100) for an atomizing device according to any one of claims 1 to 10, wherein at least a portion of the winding layer (10) is a curved surface-shaped piece. The heater (100) for an atomizing device according to claim 11, wherein at least a portion of the winding layer (10) is a U-shaped piece bent toward the location of the heating element (20). The heater (100) for an atomizing device according to claim 12, wherein the spiral coil (11) The central axis direction is perpendicular to the central axis direction of the heating element (20). The heater (100) for an atomizing device according to claim 1, further comprising: A substrate (30), wherein the winding layer (10) is provided on the substrate (30). The heater (100) for an atomization device according to claim 14, wherein the substrate (30) is a flexible member. The heater (100) for an atomization device according to any one of claims 1 to 15, wherein the heating element (20) is needle-shaped or sheet-shaped. The heater (100) for an atomizing device according to claim 16, wherein a large surface of the sheet-shaped heating element (20) is perpendicular to the magnetic lines of force generated by the spiral coil (11). The heater (100) for an atomizing device according to any one of claims 1 to 17, wherein the heating element (20) is a tubular element. An atomizing device, comprising the heater (100) for an atomizing device as described in any one of claims 1-18.