Heater and atomization device

Abstract

The utility model provides a heater and an atomization device, the heater comprises a coil layer, the coil layer comprises at least two sub-coils arranged in parallel, and the coil layer generates a magnetic field after being electrified; the heating piece is arranged on one side of the coil layer, and magnetic lines of force of the magnetic field pass through the heating piece. According to the utility model, the coil layer of the heater comprises the at least two sub-coils which are arranged in parallel, so that the occupied space of the heater can be reduced, the design of miniaturized products is facilitated, and the heating efficiency is also improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electronic cigarettes. Specifically, the utility model relates to a heater and an atomization device. Background Art

[0002] For the current heat-not-burn electronic cigarette market, the main heating methods include resistance heating and electromagnetic heating. And the electromagnetic heating system includes an electromagnetic heater and an electromagnetic induction heating coil.

[0003] The existing electromagnetic induction heating coils generally adopt the method of directly winding circular copper wires, and the existing copper wires have low heating efficiency. Summary of the Utility Model

[0004] An object of the utility model is to provide a new technical solution for a heater and an atomization device, which can solve the technical problem of low heating efficiency of the existing copper wires.

[0005] According to the first aspect of the utility model, a heater is provided, including: a coil layer, the coil layer includes at least two sub-coils arranged in parallel, and the coil layer generates a magnetic field after being energized; a heating element, the heating element is arranged on one side of the coil layer, and the magnetic force lines of the magnetic field pass through the heating element.

[0006] Optionally, the shape of the coil layer is spiral.

[0007] Optionally, the coil layer includes a plurality of coil units, each coil unit includes at least two of the sub-coils arranged in parallel, and the plurality of coil units are spaced apart along a first direction. In the first direction, one end of the previous coil unit is connected to one end of the next coil unit.

[0008] Optionally, the coil layer encloses a cylindrical receiving space, the heating element is located in the receiving space, and the first direction is the axial direction of the receiving space.

[0009] Optionally, the sub-coil includes: multiple layers of conductors, the multiple layers of conductors are stacked, and adjacent two conductors are bonded.

[0010] Optionally, the width of each sub-coil is less than the dimension in the thickness direction of the sub-coil.

[0011] Optionally, the heater further includes: a substrate, and the coil layer is arranged on the substrate.

[0012] Optionally, the coil layer is arranged on the inner side surface of the substrate.

[0013] Optionally, the substrate is a flexible member.

[0014] Optionally, the coil layer is bonded to the substrate.

[0015] Optionally, the heater further includes a temperature measurement circuit disposed on the substrate for obtaining the temperature of the heating element.

[0016] Optionally, the temperature measurement circuit is disposed on the inner side surface of the substrate.

[0017] Optionally, the heater further includes a heat insulation layer located on the inner side surface and / or the outer side surface of the substrate.

[0018] Optionally, the heater further includes a magnetic shielding layer disposed outside the coil layer.

[0019] According to a second aspect of the present invention, there is provided an atomizing device including a heater and an atomizer cartridge, wherein the heater is any one of the heaters described above.

[0020] Optionally, the atomizing device further includes a tubular member having a cavity for receiving the atomizer cartridge.

[0021] The heater according to an embodiment of the present invention mainly includes a coil layer and a heating element. The coil layer includes at least two sub-coils connected in parallel, which can not only reduce the space occupied by the heater and is beneficial to the design of miniaturized products, but also improve the heating efficiency.

[0022] Other features and advantages of the present invention will become clear from the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0024] Figure 1 is a partial structural schematic diagram of an atomizing device provided by an embodiment of the present invention;

[0025] Figure 2 is a partial unfolded schematic diagram of a heater provided by an embodiment of the present invention;

[0026] Figure 3 is Figure 2 an enlarged view of the area circled in;

[0027] Figure 4 is a three-dimensional structural schematic diagram of a heater provided by an embodiment of the present invention;

[0028] Figure 5Cross-sectional schematic view of a coil layer of a heater provided by an embodiment of the present utility model;

[0029] Figure 6 Cross-sectional schematic view of a sub-coil of a heater provided by an embodiment of the present utility model.

[0030] Reference numerals:

[0031] Heater 100;

[0032] Coil layer 10; Coil unit 11; Sub-coil 111; Conductor 1111;

[0033] Heating element 20;

[0034] Receiving space 30;

[0035] Substrate 40. Detailed implementation manners

[0036] Now, various exemplary embodiments of the present utility model will be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present utility model.

[0037] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present utility model or its application or use.

[0038] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification.

[0039] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0040] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0041] First, the heater 100 according to an embodiment of the present utility model will be specifically described below with reference to the accompanying drawings.

[0042] As Figures 1 to 6 shown, the heater 100 according to an embodiment of the present utility model includes a coil layer 10 and a heating element 20.

[0043] Specifically, the coil layer 10 includes at least two sub-coils 111 arranged in parallel. The coil layer 10 generates a magnetic field after being energized. The heating element 20 is disposed on one side of the coil layer 10, and the magnetic force lines of the magnetic field pass through the heating element 20.

[0044] In other words, the heater 100 according to the embodiment of the present invention mainly consists of a coil layer 10 and a heating element 20. Among them, the coil layer 10 generates a magnetic field after being energized, and the magnetic force lines of the magnetic field pass through the heating element 20. The coil layer 10 and the heating element 20 can cooperate with each other to achieve electromagnetic heating.

[0045] Among them, by adopting the coil layer 10, it has the advantages of being able to withstand a relatively high temperature, having a simple assembly process, and being relatively thin. And for winding the coil, the coil layer 10 can minimize the capacitive energy loss formed by the relative cross-sectional area between adjacent coils to the greatest extent. In addition, the coil layer 10 also has the advantages of being relatively thin as a whole and occupying a small space. For the heater 100, the diameter size of the heater 100 can be made relatively small, so that the heater 100 product itself can be more compact and beautiful.

[0046] It should be noted that the coil layer 10 includes at least two sub-coils 111 arranged in parallel. For example, the coil layer includes five sub-coils 111, and the five sub-coils 111 are connected in parallel. By adopting at least two sub-coils 111 connected in parallel, the internal resistance of the coil can be effectively reduced, the probability of the problem of serious self-heating of the coil can be reduced, the power loss can be effectively reduced, and the heating efficiency can be improved. In addition, by changing the original single coil into more sub-coils 111, the skin effect can be utilized to reduce the loss.

[0047] Thus, the heater 100 according to the embodiment of the present invention mainly consists of a coil layer 10 and a heating element 20. The coil layer 10 includes at least two sub-coils 111 arranged in parallel, which can not only reduce the space occupied by the heater 100, facilitate the design of miniaturized products, but also improve the heating efficiency.

[0048] According to an embodiment of the present invention, as Figure 4 shown, the shape of the coil layer 10 is spiral, so that the coil layer 10 can cover more space and heat a larger range of space.

[0049] In some specific embodiments of the present invention, such as Figure 2As shown, the coil layer 10 includes a plurality of coil units 11. Each coil unit 11 includes at least two sub-coils 111 arranged in parallel. The plurality of coil units 11 are distributed at intervals in the first direction. In the first direction, one end of the previous coil unit 11 is connected to one end of the next coil unit 11. Among them, the first direction can be the up-down direction, and the lower end of the upper coil unit 11 is connected to the upper end of the lower coil unit 11, which is convenient for connecting the plurality of coil units 11 together to form a three-dimensional structure.

[0050] According to an embodiment of the present invention, as Figure 4 shown, the coil layer 10 encloses a cylindrical receiving space 30. The heating element 20 is located in the receiving space 30. The first direction is the axial direction of the receiving space 30, which is convenient for the cooperation between the coil layer 10 and the heating element 20, improving the heating uniformity and efficiency. In addition, the object to be heated can also be installed in the receiving space 30, and the object to be heated is heated through the mutual cooperation of the coil layer 10 and the heating element 20.

[0051] In some specific embodiments of the present invention, as Figure 5 shown, the sub-coil 111 includes multiple layers of conductors 1111. The multiple layers of conductors 1111 are stacked, and adjacent two conductors 1111 are bonded. That is to say, the conductors 1111 of the sub-coil 111 can be one layer or multiple layers. Among them, the stacking direction of the multiple layers of conductors 1111 can be the radial direction of the cylindrical heating element.

[0052] According to an embodiment of the present invention, as Figure 6 shown, the width of each sub-coil 111 is less than the dimension in the thickness direction of the sub-coil 111. For example, the width of the sub-coil 111 is defined as X, and the thickness is defined as Y, and Y is greater than X. In this embodiment, by limiting the thickness of the sub-coil 111 to be greater than its width, as the thickness increases, it is beneficial to increase the current-carrying capacity, and it can ensure that the sub-coil 111 is not easily broken when increasing the number of dividable sub-coils 111 in the width direction of the coil layer 10. Among them, the width direction of the sub-coil 111 can be the direction parallel to the axial direction of the cylindrical heating element 20, and the thickness direction can be the direction along the radial direction of the cylindrical heating element 20.

[0053] In some specific embodiments of the present invention, as Figure 2 and Figure 4As shown, the heater 100 further includes a substrate 40. A coil layer 10 is disposed on the substrate 40. For example, the substrate 40 is a hollow cylindrical member that encloses a receiving space 30. The coil layer 10 is disposed on the substrate 40, and a heating element 20 can be installed in the receiving space 30. In this embodiment, by providing the substrate 40, the substrate 40 can support and position the coil layer 10 and the like. Among them, when the coil layer 10 is a spiral coil, the coil layer 10 can also be disposed around the substrate 40, capable of covering more of the substrate 40 and increasing the magnetic field strength.

[0054] According to an embodiment of the present invention, as Figure 4 shown, the coil layer 10 is disposed on the inner side surface of the substrate 40, capable of shortening the distance from it to the heating element to be heated in the receiving space 30, so as to heat the heating element to be heated in the receiving space 30 with higher efficiency. For example, the spiral coil layer 10 is disposed around the inner side surface of the substrate 40, which is beneficial for more areas on the coil layer 10 to cooperate with the heating element 20.

[0055] In some specific embodiments of the present invention, as Figure 2 and Figure 4 shown, the substrate 40 is a flexible member, which can be unfolded or wound to form the receiving space 30. For example, the coil layer 10 is disposed on the currently unfolded substrate 40, and then the substrate 40 drives the coil layer 10 to be wound together. Among them, the substrate 40 can adopt an insulating film. There are many materials for the insulating film, and the most commonly used are polyester materials and polyimide. Such a substrate needs to have non-volatility, stable geometric dimensions, a relatively high tear strength, and can withstand a high temperature of more than 250 °C.

[0056] For example, the substrate 40 and the coil layer 10 cooperate to form a flexible circuit (FPC) coil. Among them, a flexible printed circuit board (FPC) is a printed circuit made of a polyester film or polyimide as a substrate, which has high reliability and excellent flexibility. Such a circuit can be bent and folded arbitrarily, with light weight, small volume, good heat dissipation, and convenient installation. For the FPC coil, the conductor 1111 can adopt copper foil, etc. The copper foil can be basically divided into electrolytic copper and rolled copper. It can be electro-deposited (abbreviated as ED) or plated. It is a flexible material and can be made into many thicknesses and widths. In addition to flexibility, such copper foil also has the characteristics of hard smoothness.

[0057] When the rectangular substrate 40 is unfolded, multiple coil units 11 can be parallel to each other along the first direction. By arranging them in parallel, the total number of coil units 11 can be increased. When setting, copper foils with a certain width and thickness can be formed into parallel lines at an angle on the substrate 40. The left and right sides can be a row of connecting pads or connecting holes, and the following two are pads or connecting holes for connecting to the main board control. Each line is divided into multiple parallel lines in the middle of the left and right pads, that is, multiple parallel sub-coils 111.

[0058] When the substrate 40 is wound around the central axis into a cylindrical shape, there is a connecting seam in the middle of the cylinder. On each parallel copper foil line on the FPC, the leftmost first solder joint and the rightmost first solder joint can be connected, and the pads or connecting holes on the left and right sides can be connected in this way in sequence. The connection method can be welding, riveting, bonding and other connection methods to make the connection impedance small and stable. In this way, the copper foil lines on the formed cylindrical FPC reach from the top of the cylinder to the bottom of the cylinder in a spiral winding manner, thus forming a spiral coil, and finally forming a spiral FPC coil.

[0059] In addition, when the coil circuit is composed of etched copper foil, the accuracy is relatively high, and the inductance of the formed coils is consistent, so the heating efficiency of each product is the same.

[0060] According to an embodiment of the present invention, the coil layer 10 is bonded to the substrate 40. That is to say, an adhesive can be used to bond the conductor 1111 and the substrate 40, or to bond two adjacent conductors 1111. It should be noted that in addition to being used to bond the insulating film to the conductive copper foil, the adhesive can also be used as a covering layer, a protective coating, and a covering coating. The width and thickness of the copper foil of the FPC coil can be designed according to specific design requirements, and the number of layers can be two or more.

[0061] In some specific embodiments of the present invention, the heater 100 further includes a temperature measurement circuit provided on the substrate 40 for obtaining the temperature of the heating element 20. That is to say, a circuit for temperature measurement can be provided on the substrate 40, which can be used to achieve safety protection. During heating, the temperature near the heating element 20 is likely to be too high, and safety accidents are likely to occur. For example, when the heater 100 is used in an atomization device, when the atomization device system is heating, the temperature near the heating element 20 will reach about 250°C. However, when the system crashes and other situations occur, the coil layer 10 cannot stop working in time. At this time, the temperature of the heating element 20 is likely to reach 500°C or even higher out of control, which will burn out the smoking device and even scald the user. In this embodiment, safety protection can be achieved by setting the temperature measurement circuit.

[0062] In some specific embodiments of the present utility model, the temperature measurement circuit is arranged on the inner side of the substrate 40, facilitating accurate acquisition of the temperature near the heating element 20.

[0063] According to an embodiment of the present utility model, the heater 100 further includes a heat insulation layer, which is located on the inner side and / or the outer side of the substrate 40. That is to say, the heat insulation layer can be provided on at least one of the inner side and the outer side of the substrate 40. It should be noted that since the structure formed by the substrate 40 and the coil layer 10 in the embodiment of the present utility model is very thin and occupies little space, in this embodiment, there is sufficient space to satisfy the setting of the heat insulation layer on the substrate 40, avoiding the heater 100 from being too large in size. In this embodiment, by setting the heat insulation layer, the degree of heat dissipation can be reduced.

[0064] In some specific embodiments of the present utility model, the heater 100 further includes a magnetic shielding layer, which is arranged outside the coil layer 10. For example, a magnetic shielding material is coated outside the FPC coil for shielding, that is, a magnetic shielding layer is set. Optionally, a heat insulation layer can be further arranged outside the magnetic shielding layer.

[0065] The present utility model also provides an atomizing device, which includes the heater 100 and a cartridge. The heater 100 is the heater 100 in any of the above embodiments. At least a part of the cartridge can extend into the receiving space 30, and through the cooperation of the heating element 20 and the coil layer 10, the heating of the cartridge can be realized. Since the atomizing device in the embodiment of the present utility model includes the above-mentioned heater 100, and the heater 100 can effectively reduce the impedance of the coil by dividing the existing single coil into multiple mutually parallel sub-coils 111, while satisfying the over-current capacity of the coil, greatly reducing the energy loss caused by the self-heating of the coil, and effectively improving the heating efficiency. Therefore, the atomizing device in the embodiment of the present utility model has the same advantages and will not be elaborated here.

[0066] According to an embodiment of the present utility model, the atomizing device further includes a tubular member, which has a cavity for receiving the cartridge, and the tubular member can play a role in installing the cartridge.

[0067] In some specific embodiments of the present utility model, the outer surface of the tubular member is attached to the outer wall surface of the substrate 40, and the coil layer 10 is located between the substrate 40 and the tubular member. Optionally, a heat insulation layer can be attached to the outer surface of the tubular member, and then the FPC coil formed by the substrate 40 and the coil layer 10 is attached to the heat insulation layer. Then, a magnetic shielding layer is coated outside the FPC coil for shielding, and then a heat insulation layer is wound around the periphery of the magnetic shielding layer, and a heating chimney can be formed. The chimney prepared by this method has a small diameter, so that the diameter of the obtained atomizing device can be made relatively small and beautiful.

[0068] In addition, it should be noted that for the coils wound with existing copper wires in the prior art, in order to ensure the stability of the winding pitch, the number of turns, and the inductance formed thereby, it is necessary to additionally add a coil bracket, and make a wire groove with a fixed thread on the bracket, and the copper wire is wound in the manner of the wire groove. In contrast, the structure formed by the cooperation of the substrate 40 and the coil layer 10 in the embodiment of the present invention does not require the addition of a coil bracket, which is very helpful for cost saving and simplifying the assembly process.

[0069] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A heater, characterized in that, Comprising: A substrate; A coil layer disposed on the substrate, the coil layer and the substrate cooperating to form a flexible circuit coil, the coil layer including at least two sub-coils arranged in parallel, the coil layer generating a magnetic field after being energized; A heating element disposed on one side of the coil layer, the magnetic field lines of the magnetic field passing through the heating element.

2. The heater according to claim 1, characterized in that, The shape of the coil layer is spiral.

3. The heater according to claim 2, characterized in that, The coil layer includes a plurality of coil units, each coil unit including at least two of the sub-coils arranged in parallel, the plurality of coil units being spaced apart along a first direction, and in the first direction, one end of the previous coil unit is connected to one end of the subsequent coil unit.

4. The heater according to claim 3, characterized in that, The coil layer encloses a cylindrical accommodation space, the heating element is located in the accommodation space, and the first direction is the axial direction of the accommodation space.

5. The heater according to claim 1, characterized in that, The sub-coil includes: Multiple layers of conductors, the multiple layers of conductors being stacked, and adjacent two of the conductors being bonded.

6. The heater according to claim 1, characterized in that, The width of each sub-coil is less than the dimension in the thickness direction of the sub-coil.

7. The heater according to claim 1, characterized in that, The coil layer is disposed on the inner side surface of the substrate.

8. The heater according to claim 1, characterized in that, The substrate is a flexible member.

9. The heater according to claim 1, characterized in that, The coil layer is bonded to the substrate.

10. The heater according to claim 1, characterized in that, Further comprising: A temperature measurement circuit disposed on the substrate for obtaining the temperature of the heating element.

11. The heater according to claim 10, characterized in that, The temperature measurement circuit is disposed on the inner side surface of the substrate.

12. The heater according to claim 1, characterized in that, Further comprising: A heat insulation layer located on the inner side surface and / or the outer side surface of the substrate.

13. The heater according to claim 1, characterized in that, Further comprising: A magnetic shielding layer disposed outside the coil layer.

14. An atomizing device, characterized in that, Comprising: A heater and an atomizer cartridge, the heater being the heater according to any one of claims 1-13.

15. The atomizing device according to claim 14, characterized in that, Further comprising: A tubular member having a cavity for accommodating the atomizer cartridge.

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