CN109309977B

CN109309977B - Coil panel for electromagnetic cooking appliance, manufacturing method of coil panel and electromagnetic cooking appliance

Info

Publication number: CN109309977B
Application number: CN201710631909.0A
Authority: CN
Inventors: 杨玲; 曹达华; 屈雪平; 李康; 李洪伟; 李兴航; 黄维; 龚弦
Original assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Priority date: 2017-07-28
Filing date: 2017-07-28
Publication date: 2021-10-26
Anticipated expiration: 2037-07-28
Also published as: CN109309977A

Abstract

The invention discloses a coil panel for an electromagnetic cooking appliance, a manufacturing method thereof and the electromagnetic cooking appliance, wherein the coil panel comprises: a support; a coil including a body layer formed by laser engraving of a printed metal layer printed on a side surface of the support. The coil panel according to the embodiment of the invention has the advantages of reduced manufacturing cost, simpler process, easier manufacturing, realization of thinning, contribution to realizing the miniaturization of the coil panel, and easier realization of various shapes of the coil.

Description

Coil panel for electromagnetic cooking appliance, manufacturing method of coil panel and electromagnetic cooking appliance

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to a coil panel for an electromagnetic cooking appliance, a manufacturing method of the coil panel and the electromagnetic cooking appliance with the coil panel.

Background

In the related art, a coil of a small household appliance heated by an IH method is generally manufactured by winding an enamel wire. The winding process is complex, the poor processing procedures such as wire jumping, scratching, short wire and the like are easy to occur, and the form of the coil is very single. In order to match with the winding of the coil, a plurality of wire grooves are required to be arranged on the plastic base material carrying the coil, the design is complex, the die opening and die changing period is long, and the cost is high. The multi-section IH heating control coil panel is formed by combining a plurality of components, and the whole coil panel component is thick, heavy and quite complex in structure, which is unfavorable for the miniaturization and light weight of small household appliances.

In addition, the coil panel is manufactured by LDS (laser direct structuring) technology, but special materials are required, the manufacturing process is complicated, the product quality is not easy to control, and the structure of the coil panel still needs to be improved.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. To this end, the present invention proposes a coil disk for an electromagnetic cooking appliance, which is easier to manufacture and has a reduced cost.

The invention also provides an electromagnetic cooking appliance with the coil panel.

The invention also provides a manufacturing method of the coil panel.

A coil disk for an electromagnetic cooking appliance according to an embodiment of a first aspect of the present invention includes: a support; a coil comprising a body layer formed by laser engraving of a printed metal layer printed on a side surface of the support.

The coil panel according to the embodiment of the invention has the advantages of reduced manufacturing cost, simpler process, easier manufacturing, realization of thinning, contribution to realizing the miniaturization of the coil panel, and easier realization of various shapes of the coil.

In addition, the coil panel for the electromagnetic cooking appliance according to the above embodiment of the present invention may further have the following additional technical features:

optionally, the printed metal layer is a printed copper layer, a printed silver layer or a printed gold layer.

According to some embodiments of the invention, the coil further comprises: the protective layer is coated on the outer surface of the body layer.

Further, the protective layer is an electroplated nickel layer, a silicone layer or an insulating paint layer.

Optionally, the protective layer has a thickness of 5-10 microns.

According to some embodiments of the invention, the thickness of the body layer is 300-400 microns.

In some embodiments of the invention, the body layer is formed in a spiral shape and has a line width of 1 mm to 3 mm, a pitch of 0.2 mm to 1 mm, and a number of turns of 25 to 35.

Optionally, the support is a plastic support, a ceramic support or a glass support.

Further, the bracket is injection molded by at least one of polycarbonate, acrylonitrile-butadiene-styrene copolymer, polybutylene terephthalate, polypropylene, polycarbonate and polyphenylene sulfide.

An electromagnetic cooking appliance according to an embodiment of the second aspect of the present invention includes the coil panel for an electromagnetic cooking appliance according to an embodiment of the first aspect of the present invention.

A method of manufacturing a coil disk for an electromagnetic cooking appliance according to an embodiment of a third aspect of the present invention includes the steps of: obtaining the bracket; printing the surface of the support to form the printing metal layer; and carrying out laser etching treatment on the printing metal layer to form the body layer.

Optionally, the surface of the support is cleaned with alcohol prior to the printing process.

Alternatively, at the time of the printing process, screen printing is employed a plurality of times, and the baking process is performed after the printing is completed.

Further, at the time of the printing process, screen printing is employed a plurality of times, and a baking process is performed after the printing is completed.

Specifically, screen printing of 100 mesh to 250 mesh was used twice.

Optionally, baking at 130-150 degrees Celsius for 60-90 minutes.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a coil disk according to an embodiment of the present invention;

fig. 2 is a sectional view of a coil disk according to an embodiment of the present invention.

Fig. 3 is a flowchart of a method of manufacturing a coil disk according to an embodiment of the present invention.

Reference numerals:

a coil panel 100;

a support 10;

a coil 20; a body layer 210; printing a metal layer 211; a protective layer 220.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below are exemplary embodiments for explaining the present invention with reference to the drawings and should not be construed as limiting the present invention, and those skilled in the art can make various changes, modifications, substitutions and alterations to the embodiments without departing from the principle and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

In the description of the present invention, it is to be understood that the terms "thickness," "upper," "lower," "front," "back," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present invention.

A coil panel 100 for an electromagnetic cooking appliance according to an embodiment of the present invention is described below with reference to the accompanying drawings.

Referring to fig. 1 to 2, a coil disk 100 according to one embodiment of the present invention may include a support 10 and a coil 20, the coil 20 including a body layer 210, the body layer 210 being laser-engraved by a printed metal layer 211 printed on one side surface of the support 10. That is, the body layer 210 may include a printed metal layer 211, the printed metal layer 211 is provided on one side surface of the support 10, and the printed metal layer 211 may be formed in the shape of the body layer 210 corresponding to a desired coil pattern by laser etching.

Here, the coil pattern is a shape assumed by the coil pattern. The side surface of the support 10 provided with the printed metal layer 211 may be a side surface of the support 10 facing the pot body of the electromagnetic cooking appliance, or a side surface of the support 10 facing away from the pot body. The printed metal layer 211 is disposed on one side surface of the support 10, which not only facilitates the printing operation, but also facilitates the installation of the support 10.

Specifically, at the time of manufacturing, the printed metal layer 211 may be printed on the support 10. The printing process reduces the material requirements for the stent 10 and also reduces the manufacturing time. After the printing process is completed, the coil patterns can be flexibly designed according to actual requirements of the whole product such as size, shape and power, the preset shape required by the body layer 210 can be manufactured by controlling the laser engraving (also called laser or laser engraving) processing procedure, not only can the simple shape be manufactured, but also the more complex shape can be easily manufactured, the coil patterns can be formed at one time, the dislocation problem of the spliced patterns can not be generated, the attractive effect can be improved, and the conductive performance can be ensured.

From this, make coil panel 100 through printing with the mode of radium carving, can replace the mode of traditional coiling enameled wire, need not to set up recess or fixed knot structure that is used for installing the enameled wire on support 10, support 10 structure is simpler, easily makes, effectively solves the problem that current structure and processing procedure are complicated to coil panel 100 that forms is lighter and thinner than traditional coil panel, and coil 20 shape design is more nimble, can realize the flexibility of design and preparation moreover.

Compared with an LDS (laser direct structuring) mode in the related art, the method has the advantages that the requirement on the material of the support 10 is lower, the designed coil patterns can be formed at one time, the problem of splicing dislocation is avoided, the precision is high, the product consistency is good, coils 20 in various shapes can be easily realized, the manufacturing time can be greatly shortened, the method is suitable for production line operation, and mass production is realized.

According to the coil disc 100 of the embodiment of the invention, the body layer 210 of the coil 20 is formed by laser engraving of the printed metal layer 211 printed on the support 10, so that the manufacturing cost can be reduced, the process is simpler, the flexibility of design, trial production and mass production is easy to realize, the product quality is higher, the miniaturization, the light weight and the flexibility of manufacturing of the coil disc 100 can be further realized, the production period is shortened, and the large-scale production can be carried out. This coil panel 100 can be applied to all products that use IH heating methods on, like electric rice cooker, electromagnetism stove, electric pressure cooker, electric stewpan, bread machine, broken wall machine etc. realize cooking food through the electromagnetic induction principle, the culinary art performance is good.

According to some embodiments of the present invention, the printed metal layer 211 may be a printed copper layer, a printed silver layer, a printed gold layer, or the like, that is, the printed metal layer 211 may be formed by printing copper, silver, or gold, and the formed printed metal layer 211 has a good conductive effect and a firm structure. Of course, other metal materials with conductive capability can be flexibly selected to be printed according to actual conditions, and the invention does not make special requirements for the printing.

Alternatively, the thickness of the body layer 210 may be 300 microns-400 microns. Therefore, the electromagnetic cooker is more convenient to manufacture, can ensure excellent electromagnetic performance and improves cooking effect. For example, in some specific examples of the present invention, the body layer 210 is composed of the printed metal layer 211, and the thickness of the body layer 210 is 320 micrometers, 340 micrometers, 360 micrometers, 380 micrometers, and the like.

It should be noted that the thickness of the body layer 210 is included in a range including two endpoints, namely 300 microns and 400 microns. Also, in the following description, reference to a range of values is understood to include the case where two endpoints are available.

The present invention is not particularly limited in the shape of the coil 20, and alternatively, according to some embodiments of the present invention, the body layer 210 may be formed in a spiral shape, whereby the coil 20 may be formed in a substantially spiral structure, which is excellent in electromagnetic performance, can improve cooking effect, and is more adaptive to the structure of the support 10. Further, the specific structural parameters of the spiral shape can be set as follows: the line width is 1 mm-3 mm, the interval is 0.2 mm-1 mm, and the number of turns is 25-35. A large number of tests prove that the coil panel 100 with the structural parameters has excellent electromagnetic performance, moderate electrical parameter values such as inductive reactance and impedance, good structural stability, good heat dissipation performance and longer service life of the coil panel 100.

For example, in one specific example of the present invention, the body layer 210 has a line width of 2 mm, a pitch of 0.6 mm, and a number of turns of 30. For another example, in another specific example of the present invention, the width of the body layer 210 is 1 mm, the spacing is 0.4 mm, and the number of turns is 35.

In order to improve the reliability of the coil disc 100, optionally, the coil 20 of the coil disc 100 according to an embodiment of the present invention may further include a protective layer 220, as shown in fig. 2, the protective layer 220 may be coated on an outer surface of the body layer 210 to protect the body layer 210 from being damaged. The material of the protection layer 220 is not particularly limited, and the protection layer 220 may be an electroplated nickel layer, a silicone layer, or an insulating paint layer. The electroplated nickel layer can improve the conductivity of the coil 20, and the silicon resin layer and the insulating paint layer can perform insulation protection on the body layer 210, so that the body layer 210 is prevented from being short-circuited with other conductive parts, external electromagnetic interference can be shielded, and the electromagnetic performance is improved.

For example, in one specific example of the present invention, the protective layer 220 is an electroplated nickel layer, and the electroplating may be performed at 55 ℃ to 60 ℃ to improve the electroplating effect. For another example, in another specific example of the present invention, the protective layer 220 is a high temperature resistant insulating paint layer, and the insulating paint layer is formed by coating an insulating paint on the body layer 210, wherein the insulating paint is composed of a base material, a flame retardant, a curing agent, pigments, fillers, a solvent, and the like, and the base material is composed of a resin such as polyester resin, epoxy resin, and the like, which is known to those skilled in the art and will not be described in detail herein. For another example, in still another specific example of the present invention, the protective layer 220 is a high temperature-resistant silicone layer formed by coating silicone on the body layer 210.

The thickness of the protection layer 220 may be flexibly set according to protection requirements, equipment requirements, and the like, and optionally, the thickness of the protection layer 220 may be 5 micrometers to 10 micrometers. Therefore, not only can a good protection effect be achieved, but also the overall structure of the protection layer 220 is firmer. For example, in one specific example of the present invention, the protective layer 220 is an electroplated nickel layer having a thickness of 6 microns. For another example, in another specific example of the present invention, the protective layer 220 is a silicone layer with a thickness of 7 μm.

The material of the support 10 is not particularly limited in the present invention, and optionally, the support 10 may be a plastic support, a ceramic support, or a glass support, and these supports 10 may have good printing performance, which is beneficial to the arrangement of the printed metal layer 211. According to some embodiments of the present invention, the stent 10 may be injection molded from at least one of PC-ABS (polycarbonate and acrylonitrile butadiene styrene), PBT (polybutylene terephthalate), PP (polypropylene), PC (polycarbonate), PPs (polyphenylene sulfide). The resulting stent 10 has high structural strength and good shape retention, facilitating subsequent printing operations.

The present invention also provides an electromagnetic cooking appliance, an electromagnetic cooking appliance according to an embodiment of the present invention may include the coil panel 100 according to an embodiment of the present invention, and the installation of the coil panel 100 in the electromagnetic cooking appliance and the like may be understood and easily implemented by those skilled in the art, and will not be described in detail herein. Since the coil panel 100 according to the embodiment of the present invention has the above-mentioned advantageous technical effects, the electromagnetic cooking appliance according to the embodiment of the present invention is more convenient to manufacture, lower in cost, and good in cooking effect.

Alternatively, the electromagnetic cooking appliance according to the embodiment of the present invention may be an electric cooker, an induction cooker, an electric pressure cooker, an electric stewpan, a bread maker, a wall breaking machine, or the like, and other configurations and operations of the electromagnetic cooking appliance and the coil panel 100 will be known to those skilled in the art and will not be described in detail herein.

A method of manufacturing a coil disk according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. As shown in fig. 3, a manufacturing method according to an embodiment of the present invention may include the steps of:

s1: and (5) obtaining the bracket.

S2: and printing the surface of the support to form a printed metal layer.

S3: and carrying out laser etching treatment on the printing metal layer to form a body layer.

According to the manufacturing method provided by the embodiment of the invention, the coil is manufactured in a printing and laser etching mode, and the manufacturing method has the advantages of short manufacturing time, high quality of manufactured products, low cost, low requirement on equipment and the like.

Taking the coil disc 100 as an example, in step S1, the bracket 10 may be manufactured by injection molding or the like, or may be purchased directly as a finished product, which is not limited in the present invention.

In step S2, before the printing process, the surface of the support 10 may be cleaned with alcohol to improve the surface cleanliness of the support 10, facilitating the printing operation, and the printed metal layer 211 may be more closely attached to the support 10, improving the reliability of the coil disk 100.

Alternatively, in the printing process, screen printing may be used several times, and after the printing is completed, a baking process may be performed. Thus, not only the printing quality but also the production efficiency can be improved. The mesh number and the printing frequency of the screen can be flexibly selected according to the requirement, and optionally, the screen printing of 100 meshes-250 meshes, for example, 100 meshes, 150 meshes or 200 meshes, can be adopted for twice, so that the printing effect is better.

After printing, the printing paper can be baked at 130-150 ℃ for 60-90 minutes, thereby improving the printing quality. The baking time can be adjusted appropriately according to the printing area and thickness. For example, in one specific example of the present invention, 200 mesh screen printing was used twice, and baked at 140 degrees celsius for 75 minutes after printing. In actual manufacturing, the number of printing times n is related to the power P, where P/t is equal to n, t is the thickness of the printed metal layer 211 formed by printing once, and when t is 150um to 200um and P is 1200W, printing is only required to be performed twice.

In addition, for the coil disk 100 having the protective layer 220, the protective layer 220 may be provided after the manufacturing of the body layer 210 is completed. The method for disposing the protection layer 220 is various, and may be flexibly selected according to different materials, for example, by electroplating or coating.

Other constructions and operations of the electromagnetic cooking appliance and the coil panel 100 according to the embodiment of the present invention will be known to those skilled in the art and will not be described in detail herein.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the terms "embodiment," "example," "specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples.

Claims

1. A coil disk for an electromagnetic cooking appliance, comprising:

a support;

the coil comprises a body layer and a protective layer, the body layer is formed by printing a metal layer on the surface of one side of the support through laser etching, and the protective layer is coated on the outer surface of the body layer;

the thickness of the body layer is 300-400 microns;

the body layer is formed into a spiral shape, the line width is 1 mm-3 mm, the interval is 0.2 mm-1 mm, and the number of turns is 25-35.

2. Coil disk for an electromagnetic cooking appliance according to claim 1, characterized in that the printed metal layer is a printed copper layer, a printed silver layer or a printed gold layer.

3. Coil disk for an electromagnetic cooking appliance according to claim 2, characterized in that the protective layer is an electroplated nickel layer, a silicone layer or an insulating paint layer.

4. Coil disk for an electromagnetic cooking appliance according to claim 2, characterized in that the thickness of the protective layer is between 5 and 10 microns.

5. Coil disk for an electromagnetic cooking appliance according to claim 1, characterized in that the support is a plastic support, a ceramic support or a glass support.

6. The coil panel for an electromagnetic cooking appliance according to claim 5, wherein the support is injection molded from at least one of polycarbonate and acrylonitrile butadiene styrene, polybutylene terephthalate, polypropylene, polycarbonate, polyphenylene sulfide.

7. An electromagnetic cooking appliance, characterized in that it comprises a coil disk for an electromagnetic cooking appliance according to any one of claims 1 to 6.

8. A method of manufacturing a coil disk for an electromagnetic cooking appliance according to any one of claims 1 to 6, comprising the steps of:

obtaining the bracket;

printing the surface of the support to form the printing metal layer;

and carrying out laser etching treatment on the printing metal layer to form the body layer.

9. The manufacturing method according to claim 8, wherein the surface of the holder is cleaned with alcohol before the printing process.

10. The manufacturing method according to claim 8, wherein at the time of the printing process, screen printing is employed a plurality of times, and a baking process is performed after the printing is completed.

11. The method of manufacturing of claim 10, wherein screen printing of 100 mesh to 250 mesh is used twice.

12. The method of manufacturing according to claim 10, wherein the baking is performed at 130 degrees celsius to 150 degrees celsius for 60 minutes to 90 minutes.