CN114794841A - Composite layer for pot, preparation method of composite layer, pot and cooking utensil - Google Patents
Composite layer for pot, preparation method of composite layer, pot and cooking utensil Download PDFInfo
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- CN114794841A CN114794841A CN202111630986.7A CN202111630986A CN114794841A CN 114794841 A CN114794841 A CN 114794841A CN 202111630986 A CN202111630986 A CN 202111630986A CN 114794841 A CN114794841 A CN 114794841A
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Cookers (AREA)
Abstract
The application provides a composite layer for a pot, a preparation method of the composite layer, the pot and a cooking utensil, relates to the technical field of household appliances, and aims to solve the technical problem that the existing pot is high in noise when heated. The preparation method of the composite layer for the cookware comprises the following steps: roughening the outer wall surface of the pot wall of the pot; forming a noise reduction layer on the outer wall surface of the pot wall; wherein the noise reduction layer material comprises a magnetic isolation metal material; and forming a hole sealing layer on the surface of the noise reduction layer far away from the pot wall. On one hand, the electromagnetic noise reduction device can absorb part of high-frequency electromagnetic waves, so that the electromagnetic noise is effectively improved, and the purpose of reducing the electromagnetic noise is achieved, and the user experience is improved; on the other hand can prevent that outside liquid from entering into the hole of making an uproar layer of falling, prevents to fall to make an uproar layer and produce the crackle and damage, prolongs and fall layer and pan life of making an uproar.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a composite layer for a pot, a preparation method of the composite layer, the pot and a cooking utensil.
Background
The electromagnetic cooking utensil has the advantages of rapid heating, no open fire, safety, convenience and the like, and is favored and approved by more and more consumers. The electromagnetic cooking appliances commonly used in daily life of people comprise an Induction cooker, an Induction Heat (IH) electric cooker, an IH electric pressure cooker and the like.
Electromagnetic cooking utensil includes electromagnetic heating utensil and pan, and the pan is placed on electromagnetic heating utensil's heating surface, heats the edible material in the pan through electromagnetic heating utensil. Wherein, because the peculiar electromagnetic induction heating mode of this kind of product, must use the pan of magnetic conduction material, for example stainless steel.
However, the cookware is easy to generate large noise in the using process, and influences the user experience.
Disclosure of Invention
In order to solve at least one technical problem mentioned in the background art, embodiments of the present application provide a composite layer for a cookware, a method for manufacturing the composite layer, the cookware and a cooking utensil, which can absorb part of high-frequency electromagnetic waves, thereby effectively improving electromagnetic noise, achieving the purpose of reducing electromagnetic noise, and improving user experience; on the other hand can prevent that outside liquid from entering into the hole of making an uproar layer of falling, prevents to fall to make an uproar layer and produce the crackle and damage, prolongs and fall layer and pan life of making an uproar.
In order to achieve the above object, a first aspect of embodiments of the present application provides a method of manufacturing a composite layer for a pot, including:
the outer wall surface of the pot wall of the pot is roughened.
And forming a noise reduction layer on the outer wall surface of the pot wall. Wherein the noise reduction layer material comprises a magnetic isolation metal material.
And forming a hole sealing layer on the surface of the noise reduction layer far away from the pot wall.
According to the preparation method of the composite layer for the pot, provided by the embodiment of the application, the connection tightness of the noise reduction layer and the pot wall can be improved by roughening the outer wall surface of the pot wall. Through adopting magnetism isolating metal material to form the layer of making an uproar that falls in the outer wall of pot wall, can absorb the high frequency electromagnetic wave that electromagnetic heating utensil sent through the layer of making an uproar that falls to reduce the electromagnetic noise of pan, promote user experience comfort level. Through the surface at the layer of making an uproar that falls forms the hole sealing layer, can make the hole on hole sealing layer shutoff noise reduction layer surface, prevent to cook in-process oil drop and water droplet enter into the hole of making an uproar layer of making an uproar, avoided liquid thermal expansion in the hole, lead to making an uproar layer of making an uproar to produce the crackle and damage, improved the life of making an uproar layer of making an uproar.
In one possible implementation, the noise reduction layer is prepared by any one of arc spraying, flame spraying, and plasma spraying.
Therefore, the preparation process of the noise reduction layer is richer, and the preparation difficulty of the noise reduction layer is reduced.
In one possible implementation, the meltallizing air pressure of the electric arc spraying is between 1.0 and 2.5Mpa during the process of preparing the noise reduction layer by the electric arc spraying process.
Therefore, the magnetism isolating metal can be in contact with the pot wall in a semi-molten state, and can be compressed tightly, so that the combination tightness of the noise reduction layer and the pot wall is improved, and the surface roughness and the porosity of the noise reduction layer are reduced.
In one possible implementation, the spray voltage of the electric arc spraying is between 250-350V, the spray current is between 180-220A, the spray distance is between 30-50cm, the spray angle is between 30-90 degrees, and the wire feeding voltage is between 20-25V.
Thus, the noise reduction layer can be made denser and less porous.
In one possible implementation, the magnetic-isolating metal material is a wire having a diameter of 1.0-1.8 mm.
Therefore, the magnetic-isolating metal material can be better melted, the noise reduction layer has better compactness and smaller surface roughness.
In a possible implementation manner, the step of roughening the outer wall surface of the pot wall of the pot specifically includes:
carrying out sand blasting treatment on the outer wall surface of the pot wall;
the surface roughness of the outer wall surface of the pot wall after the sand blasting treatment is between 5 and 9 mu m.
Thus, on the one hand, the roughening treatment process can be made simpler; on the other hand, the pot wall and the noise reduction layer have better combination tightness.
In a possible implementation manner, in the sand blasting treatment process, the injection air pressure is between 2.5 and 4Mpa, and the sand grain number of the sand blasting machine is between 24 and 60 meshes.
Therefore, the roughness of the outer wall surface of the pot wall can be more quickly polished to meet the required parameters.
In a possible implementation manner, before the step of forming the hole sealing layer on the surface of the noise reduction layer far from the pot wall and after the step of forming the noise reduction layer on the outer wall surface of the pot wall, the method further includes:
and carrying out flattening treatment on the surface of the noise reduction layer far away from the pot wall.
And the surface roughness of the noise reduction layer after the flattening treatment is not more than 5 mu m.
Therefore, the sharp-pointed protrusions on the surface of the noise reduction layer can be ground off, and the composite layer is prevented from being worn in the using process.
In a possible implementation manner, the step of planarizing the surface of the noise reduction layer away from the pot wall specifically includes:
processing the surface of the noise reduction layer, which is far away from the pot wall, by adopting a sanding process;
wherein, the rotating speed range of the rotating tool of the sanding process is 100-3000 r/min; and/or the mesh number of the grinding piece in the sanding process is not less than 36 meshes.
In this way, the roughness of the surface of the noise reduction layer can be more quickly polished to the desired parameters.
In a possible implementation manner, the step of forming an orifice sealing layer on the surface of the noise reduction layer far from the pot wall specifically includes:
placing the pot wall with the noise reduction layer on a rotary tool;
sponge or cotton cloth is adopted to adsorb the hole sealing agent, and the hole sealing agent is uniformly coated on the surface of the noise reduction layer;
the rotating speed range of the rotating tool is 50-300 revolutions per minute; and/or the hole sealing agent is sol-like silane resin; and/or the thickness of the hole sealing layer is between 1 and 50 mu m.
Thus, the preparation process of the hole sealing layer can be more convenient.
In a possible implementation manner, after the step of uniformly applying the sealing agent on the surface of the noise reduction layer by using sponge or cotton cloth to adsorb the sealing agent, the method further includes:
drying the pot wall coated with the hole sealing agent;
wherein the drying temperature is between 100 ℃ and 200 ℃, and the drying time is between 5 and 20 minutes.
Therefore, the hole sealing layer and the noise reduction layer can be combined more tightly, and the hole sealing layer is prevented from flowing on the surface of the noise reduction layer.
In one possible implementation, the thickness of the noise reduction layer is between 0.05-0.25 mm; and/or, the porosity of the noise reduction layer is not more than 2%; and/or the resistivity of the noise reduction layer is not more than 1-10 -7 Ω·m。
Thus, the noise reduction effect of the noise reduction layer can be better.
In a second aspect of the embodiments of the present application, there is provided a composite layer for cookware, the composite layer is prepared by the above preparation method for a composite layer for cookware.
The composite layer comprises a noise reduction layer and a hole sealing layer, the noise reduction layer is made of a magnetic isolation metal material, and the hole sealing layer is attached to at least part of the outer surface of the noise reduction layer.
The composite bed for pan that this application embodiment provided forms the layer of making an uproar of falling at the outer wall of pot wall through adopting magnetism isolating metal material, can absorb the high frequency electromagnetic wave that electromagnetic heating utensil sent through the layer of making an uproar of falling to reduce the electromagnetic noise of pan, promote user experience comfort level. Through the surface at the layer of making an uproar that falls forms the hole sealing layer, can make the hole on hole sealing layer shutoff noise reduction layer surface, prevent to cook in-process oil drop and water droplet enter into the hole of making an uproar layer of making an uproar, avoided liquid thermal expansion in the hole, lead to making an uproar layer of making an uproar to produce the crackle and damage, improved the life of making an uproar layer of making an uproar.
The third aspect of the embodiment of the application provides a pot, and this pot includes pot wall and foretell composite bed that is used for the pot, the layer of making an uproar that falls of composite bed pastes and attaches to fall on the outer wall surface of pot wall, the hole sealing layer of composite bed pastes and attaches to fall keeping away from of the layer of making an uproar one side of pot wall.
The pan that this application embodiment provided, through adopting to separate magnetic metal material and form the layer of making an uproar of falling at the outer wall of pot wall, can absorb the high frequency electromagnetic wave that electromagnetic heating utensil sent through the layer of making an uproar of falling to reduce the electromagnetic noise of pan, promote user experience comfort level. Through the surface at the layer of making an uproar that falls forms the hole sealing layer, can make the hole on hole sealing layer shutoff noise reduction layer surface, prevent to cook in-process oil drop and water droplet enter into the hole of making an uproar layer of making an uproar, avoided liquid thermal expansion in the hole, lead to making an uproar layer of making an uproar to produce the crackle and damage, improved the life of making an uproar layer of making an uproar.
A fourth aspect of the embodiments of the present application provides a cooking appliance, which includes the above-mentioned pot.
The cooking utensil that this application embodiment provided, through adopting to separate magnetic metal material and form the layer of making an uproar that falls at the outer wall of pot wall, can absorb the high frequency electromagnetic wave that electromagnetic heating utensil sent through the layer of making an uproar that falls to reduce cooking utensil's electromagnetic noise, promote user experience comfort level. Through the surface at the layer of making an uproar that falls forms the hole sealing layer, can make the hole on hole sealing layer shutoff noise reduction layer surface, prevent to cook in-process oil drop and water droplet enter into the hole of making an uproar that falls, avoided liquid thermal expansion in the hole, lead to making an uproar that falls to produce the crackle and damage, improved cooking utensil's life.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a method for manufacturing a composite layer for a pot tool according to an embodiment of the present disclosure;
fig. 2 is a schematic flow chart of a method for preparing a hole sealing layer according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a composite layer for a pot tool provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a pot provided in the embodiment of the present application.
Description of reference numerals:
100-a pot; 110-pot wall; 111-a heating section;
112-non-heating section; 120-composite layer; 121-a noise reduction layer;
122-a seal bore layer; 130-pot cover; 140-handle.
Detailed Description
As described in the background art, the electromagnetic cooking apparatus must use a pot made of magnetic conductive material, such as stainless steel, which not only has strong chemical stability, but also has sufficient strength and plasticity, and has stable mechanical properties and corrosion resistance at a certain high temperature or low temperature. However, the stainless steel cooker is prone to generate large electromagnetic noise in the electromagnetic heating process.
Based on the technical problems, the composite layer for the pot, the preparation method of the composite layer, the pot and the cooking utensil are provided, and the connection tightness of the noise reduction layer and the pot wall can be improved by roughening the outer wall surface of the pot wall. Through adopting magnetism isolating metal material to form the layer of making an uproar that falls in the outer wall of pot wall, can absorb the high frequency electromagnetic wave that electromagnetic heating utensil sent through the layer of making an uproar that falls to reduce the electromagnetic noise of pan, promote user experience comfort level. Through the surface at the layer of making an uproar that falls forms the hole sealing layer, can make the hole on hole sealing layer shutoff noise reduction layer surface, prevent to cook in-process oil drop and water droplet enter into the hole of making an uproar layer of making an uproar, avoided liquid thermal expansion in the hole, lead to making an uproar layer of making an uproar to produce the crackle and damage, improved the life of making an uproar layer of making an uproar.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first aspect of the embodiment of the application provides a preparation method of a composite layer for a cookware.
As shown in fig. 1, the method for preparing the composite layer for the pot includes:
s1: the outer wall surface of the pot wall of the pot is roughened.
It is understood that the pot wall 110 may include a non-heating portion 112 and a heating portion 111, and the non-heating portion 112 may be positioned at the periphery of the heating portion 111. If the composite layer 120 covers only the outer wall surface of the heating portion 111, only the outer wall surface of the heating portion 111 needs to be roughened. If the composite layer 120 covers not only the outer wall surfaces of the heating portions 111 but also the outer wall surfaces of the non-heating portions 112, it is necessary to perform roughening treatment not only on the outer wall surfaces of the heating portions 111 but also on portions of the outer wall surfaces of the non-heating portions 112. The heating portion 111 may be made of a magnetic material, such as a ferromagnetic material, which may include stainless steel or other ferrous alloys. The heating part 111 may be a part of the pot wall 110, that is, the material of the pot wall 110 is the same as that of the heating part 111; the heating part 111 may be a composite plate laid on the outer surface of the pot wall 110, and in this case, the material of the pot wall 110 may be a non-magnetic material, such as ceramic, aluminum, or glass.
It should be noted that the outer wall surface of the pot wall 110 is roughened to increase the roughness of the outer wall surface of the pot wall 110, to increase the contact area between the outer wall surface of the pot wall 110 and the composite layer 120, and to increase the bonding tightness between the composite layer 120 and the pot wall 110.
S2: and forming a noise reduction layer on the outer wall surface of the pot wall. Wherein, the noise reduction layer 121 material comprises a magnetic isolation metal material. For example, the noise reduction layer 121 may include any one metal layer or multiple metal composite layers of copper, copper alloy, aluminum alloy, and the like.
According to the research of the inventor, the high frequency electromagnetic wave generated by the electromagnetic heating device is likely to cause the noise of the cooker 100. It can be understood that the above materials are all non-ferromagnetic metal materials, and the noise reduction layer 121 is made of the above materials, which is helpful for the noise reduction layer 121 to absorb high-frequency electromagnetic waves, and reduce the amount of radiation of the high-frequency electromagnetic waves to the cookware 100, so as to reduce the noise of the cookware 100. In addition, since stainless steel is a material having a lattice structure, when an eddy current is generated by electromagnetic induction, a current passing through the lattice may be blocked, resulting in generation of noise. The noise reduction layer 121 is made of the material, so that current in the pot 100 can be guided to the noise reduction layer 121 to be transmitted, and the material does not have crystal lattices and has free electrons, so that the current can be smoothly transmitted in the noise reduction layer 121, and noise is prevented from being generated.
S3: and forming a hole sealing layer on the surface of the noise reduction layer far away from the pot wall.
Note that, the noise reduction layer 121 has pores after being prepared, wherein the openings of some of the pores are located on the surface of the noise reduction layer 121 on the side away from the pot wall 110. The hole sealing layer 122 is formed on the surface of the noise reduction layer 121 on the side far away from the pot wall 110. Therefore, the hole sealing layer 122 can seal the holes of the holes in the noise reduction layer 121, so that oil drops and water drops in the cooking process are prevented from entering the holes of the noise reduction layer 121, on one hand, the phenomenon that the noise reduction layer 121 is cracked and damaged due to the fact that liquid expands in the holes when heated is avoided, and the service life of the noise reduction layer 121 is prolonged; on the other hand, oil drops and water drops are prevented from remaining in the noise reduction layer 121, so that spots of the noise reduction layer 121 on the appearance are prevented, and the appearance attractiveness of the cooker 100 is improved.
In one possible implementation, the noise reduction layer 121 may be prepared by any one of thermal spraying processes of arc spraying, flame spraying, and plasma spraying. Therefore, the preparation process of the noise reduction layer 121 is richer, and the preparation difficulty of the noise reduction layer 121 is reduced.
It should be noted that the spraying method can be divided into a combustion method and an electric heating method to provide different heat sources. The combustion method includes flame spraying and explosion spraying, and the electric heating method includes electric arc spraying and plasma spraying. The flame spraying is to use the mixed combustion of fuel gas acetylene, propane, methyl acetylene-propadiene, hydrogen or natural gas and combustion-supporting gas oxygen as a heat source, and the spraying material enters the flame in a certain transmission mode, is heated to a molten or softened state, and then is sprayed onto a substrate in an accelerating way by depending on the gas or the flame. According to different spraying materials, the method can be divided into wire flame spraying and powder flame spraying. Arc spraying is a technique of melting metal by burning an electric arc between two continuously fed wires, atomizing the molten metal with a high-speed gas flow, and accelerating the atomized metal particles to spray them toward a workpiece to form a coating layer. Plasma spraying is a method of heating a material such as ceramics, alloys, metals, etc. to a molten or semi-molten state using a plasma arc driven by a direct current as a heat source, and spraying the material at a high speed onto the surface of a pretreated workpiece to form a firmly adhered surface layer. The embodiments of the present application mainly use an arc spraying process as an example for illustration.
In one possible implementation, the meltblowing air pressure of the arc spraying is in the range of 1.0Mpa to 2.5Mpa during the arc spraying process to produce the noise reduction layer.
It should be noted that in the conventional arc spraying process, the meltallizing air pressure is generally in the range of 0.5Mpa to 0.8Mpa, however, in the embodiment of the present application, the meltallizing air pressure is higher than the conventional meltallizing air pressure. The molten magnetism isolating metal can be rapidly sprayed to the surface of the pot wall 110 by increasing the meltallizing air pressure, so that the magnetism isolating metal is in contact with the pot wall 110 in a semi-molten state, and a larger acting force can be applied to the magnetism isolating metal on the surface of the pot wall 110 to compress the magnetism isolating metal, so that the porosity and the surface roughness of the noise reduction layer 121 can be reduced, and the combination tightness of the noise reduction layer 121 and the pot wall 110 can be increased.
Specifically, in the electric arc spraying process, the spray voltage of electric arc spraying is in the range of 250V-350V, the spray current is in the range of 180A-220A, the spray distance is in the range of 30cm-50cm, the spray angle is in the range of 30-90 degrees, and the wire feeding voltage is in the range of 20V-25V. Before the arc spraying, the shielding tool can be used for shielding the outer surface of the pot wall 110, on which the noise reduction layer 121 is not required to be formed, so as to prevent the droplets of the magnetic insulating metal which are melted at high temperature from being sprayed onto the surface, on which the noise reduction layer 121 is not required to be formed. It can be understood that the noise reduction layer 121 prepared by selecting the above process parameters has higher compactness and smaller porosity, so that the noise reduction layer 121 has better absorption effect on high-frequency electromagnetic waves.
In one possible implementation, in the arc spraying process, the magnetically isolating metallic material is selected from a wire having a diameter in the range of 1.0mm to 1.8 mm. The diameter of the wire is within the range, so that the surface of the noise reduction layer 121 is smooth and has good polishing performance; on the other hand, the magnetic-isolating metal material can be better melted, and the noise reduction layer 121 has better compactness and smaller roughness.
In a possible implementation manner, in the step of roughening the outer wall surface of the pot wall of the pot, the method specifically includes:
and carrying out sand blasting treatment on the outer wall surface of the pot wall. The surface roughness of the outer wall surface of the sandblasted pot wall 110 is between 5 and 9 μm. Thus, the contact area between the outer wall surface of the pot wall 110 and the composite layer 120 can be increased, and the pot wall 110 and the noise reduction layer 121 can be bonded more closely.
It should be noted that the sand blasting is a process of cleaning and roughening the surface of the substrate by the impact action of a high-speed sand flow. Compressed air is used as power to form a high-speed spray beam to spray sand grains to the surface of a workpiece to be processed at a high speed, so that the appearance or the shape of the outer surface of the workpiece is changed, and the surface of the workpiece obtains certain cleanliness and different roughness due to the impact and cutting action of the sand grains on the surface of the workpiece. The sand blasting machine is a product with the most wide sand jet application, the sand blasting machine is generally divided into a dry sand blasting machine and a liquid sand blasting machine, the dry sand blasting machine can be divided into a suction type sand blasting machine and a press-in type sand blasting machine, and the embodiment of the application mainly takes the suction type sand blasting machine as an example for explanation.
In one possible implementation, in the sand blasting process, the injection air pressure is in the range of 2.5MPa-4MPa, the sand grain number of the sand blasting machine is in the range of 24 meshes-60 meshes, and the sand grains can be white corundum, brown corundum or carborundum.
In a possible implementation manner, before the step of forming the hole sealing layer on the surface of the noise reduction layer far from the pot wall and after the step of forming the noise reduction layer on the outer wall surface of the pot wall, the method further includes:
and carrying out flattening treatment on the surface of the noise reduction layer far away from the pot wall. The surface roughness of the noise reduction layer 121 after the planarization treatment is not more than 5 μm.
The flattening treatment can polish the sharp-pointed protrusions on the surface of the noise reduction layer 121, so that the surface of the noise reduction layer 121 is smoother, and the noise reduction layer 121 is prevented from being worn in the use process to the maximum extent.
In a possible implementation manner, the step of performing planarization processing on the surface of the noise reduction layer away from the pot wall specifically includes:
and (3) processing the surface of the noise reduction layer far away from the pot wall by adopting a sanding process. Wherein, the rotating speed range of the rotating tool of the sanding process is 100-3000 r/min. The mesh number of the grinding piece in the sanding process is not less than 36 meshes. The abrading article may be sandpaper or scouring pad.
In one possible implementation, the thickness of the noise reduction layer 121 is between 0.05mm and 0.25mm, wherein the thickness may be 0.05mm, 0.1mm, 0.2mm, or 0.25 mm. If the thickness of the noise reduction layer 121 is less than 0.05mm, the noise reduction layer 121 is too thin, the ability of the noise reduction layer 121 to absorb high-frequency electromagnetic waves is limited, and the effect of reducing noise is not obvious. If the thickness of the noise reduction layer 121 is greater than 0.25mm, the noise reduction layer 121 is too thick, and the noise reduction layer 121 easily absorbs or blocks more electromagnetic waves, which affects the heating effect of the pot 100. The thickness of the noise reduction layer 121 is located above-mentioned within range, and the noise reduction effect that can guarantee the noise reduction layer 121 on the one hand is better, and on the other hand can reduce the influence of noise reduction layer 121 to pan 100 heating effect.
In one possible implementation, the porosity of the noise reduction layer 121 is no greater than 2%. In this embodiment, because the noise reduction layer 121 is prepared by a meltallizing process, the pores in the noise reduction layer 121 cannot be avoided, but according to the meltallizing process parameters in this embodiment, the porosity of the noise reduction layer 121 can be as small as possible, that is, the density of the noise reduction layer 121 is higher, so that the noise reduction layer 121 has a better absorption effect on high-frequency electromagnetic waves, and thus the noise reduction effect of the noise reduction layer 121 is better.
In one possible implementation, the noise reduction layer 121 has a resistivity of no greater than 1 · 10 -7 Ω·m。
It can be understood that the smaller the resistivity of the noise reduction layer 121 is, the better the conductivity of the noise reduction layer 121 is, so that the current of the pan wall 110 can be more easily conducted to the noise reduction layer 121, and the current is prevented from being conducted in the pan wall 110, which results in the noise generated by the pan wall 110.
In a possible implementation manner, in the step of forming the hole sealing layer on the surface of the noise reduction layer far from the pot wall, as shown in fig. 2, the method specifically includes:
s31: and placing the pot wall with the noise reduction layer on a rotary tool.
S32: sponge or cotton cloth is adopted to adsorb the hole sealing agent, and the hole sealing agent is uniformly smeared on the surface of the noise reduction layer. Wherein, the rotating speed range of the rotating tool is 50-300 r/min. The sealant can be silica sol, titanium sol or zirconium sol, and can also be sol-like silane resin.
Specifically, the thickness of the hole sealing layer 122 is between 1 μm and 50 μm, wherein the thickness may be 1 μm, 3 μm, 10 μm, 30 μm or 50 μm. If the thickness of the hole sealing layer 122 is smaller than 1 μm, the hole sealing layer 122 is too thin, and the hole sealing layer 122 is easily worn away after the pot 100 is worn. If the thickness of the hole sealing layer 122 is greater than 50 μm, the hole sealing layer 122 is too thick, and the hole sealing layer 122 is easy to absorb and filter more electromagnetic waves, thereby reducing the heating performance of the cookware 100. The thickness of the hole sealing layer 122 is within the above range, on one hand, the hole sealing layer 122 can be ensured to have certain structural strength, and the hole sealing layer 122 is prevented from being damaged; on the other hand, the influence of the hole sealing layer 122 on the heating effect of the pot 100 is reduced to the maximum extent.
It should be noted that the numerical values and numerical ranges related to the embodiments of the present application are approximate values, and there may be a certain range of errors depending on the manufacturing process, and those skilled in the art may consider these errors to be negligible.
In a possible implementation manner, after the step of uniformly coating the sealing agent on the surface of the noise reduction layer by using sponge or cotton cloth to adsorb the sealing agent, the method further includes:
s33: and drying the pot wall coated with the hole sealing agent. Wherein the drying temperature is within the range of 100-200 ℃, and the drying time is within the range of 5-20 minutes.
It should be noted that the conventional drying temperature is in the range of 240-300 ℃, and the drying temperature of 100-200 ℃ is adopted, so that the hole sealing agent can better enter pores, the production process can be simplified, and the production cost can be reduced.
The embodiment of the present application also provides noise experimental data of a pot 100 and a general pot (without a composite layer) in which the composite layer 120 is formed on the pot wall 110 by using the preparation method of the composite layer for a pot, and particularly refers to the following table 1.
Table 1: the influence of the presence or absence of a composite layer on electromagnetic noise and sharpness
As can be seen from table 1, when the composite layer 120 is not provided, the generated electromagnetic noise and the sharpness of the noise are the largest, and when the composite layer 120 is provided and the composite layer 120 entirely covers the heating portion 111, the generated electromagnetic noise and the sharpness of the noise are the smallest, and it is seen that the noise reduction effect of the composite layer 120 is significant.
In a second aspect of the embodiment of the present application, a composite layer for a pot tool is provided, and the composite layer 120 is manufactured by the above method for manufacturing a composite layer for a pot tool.
As shown in fig. 3, the composite layer 120 includes a noise reduction layer 121 and a hole sealing layer 122, the noise reduction layer 121 is made of a magnetic isolation metal material, and the hole sealing layer 122 is attached to at least a portion of an outer surface of the noise reduction layer 121.
In a third aspect of the present embodiment, as shown in fig. 4, the pot 100 includes a pot wall 110 and the composite layer 120, the noise reduction layer 121 of the composite layer 120 is attached to the outer wall surface of the pot wall 110, and the hole sealing layer 122 of the composite layer 120 is attached to a side of the noise reduction layer 121 away from the pot wall 110. The pot 100 further comprises a pot cover 130 and a handle 140, the pot cover 130 covers the opening of the pot wall 110, and the handle 140 is arranged on the outer wall surface of the pot wall 110.
A fourth aspect of the embodiments of the present application provides a cooking appliance, which includes an electromagnetic heating appliance and the above-mentioned pot 100. The electromagnetic cooking appliance may be an electric rice cooker, an electric pressure cooker or an induction cooker with a pot 100.
If the electromagnetic cooking appliance is an electric cooker or an electric pressure cooker, the electric cooker or the electric pressure cooker 100 is provided with an accommodating cavity, a heating surface is arranged in the accommodating cavity, and the cooker 100 is placed in the accommodating cavity. If the electromagnetic cooking appliance is an electromagnetic oven with a pot 100, a heating surface is arranged on the panel of the electromagnetic oven, and the pot 100 is placed on the heating surface.
The composite layer 120 for pan 100, pan 100 and cooking utensil that this application embodiment provided form the layer 121 of making an uproar that falls at the outer wall of pot wall 110 through adopting magnetism isolating metal material, can absorb the high frequency electromagnetic wave that electromagnetic heating utensil sent through the layer 121 of making an uproar that falls to reduce cooking utensil's electromagnetic noise, promote user experience comfort level. Through forming hole sealing layer 122 on the surface of noise reduction layer 121, can make hole sealing layer 122 shutoff noise reduction layer 121 surperficial hole, prevent that oil droplet and water droplet in the culinary art process from entering into noise reduction layer 121's hole in, avoided liquid to be heated the inflation in the hole, lead to noise reduction layer 121 to produce the crackle and damage, improved cooking utensil's life.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral to; either directly or indirectly through intervening media, may be used in either the internal or the external relationship of the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (15)
1. A preparation method of a composite layer for a pot tool is characterized by comprising the following steps:
roughening the outer wall surface of the pot wall of the pot;
forming a noise reduction layer on the outer wall surface of the pot wall; wherein the noise reduction layer material comprises a magnetic isolation metal material;
and forming a hole sealing layer on the surface of the noise reduction layer far away from the pot wall.
2. The method of manufacturing a composite layer for a pot according to claim 1, wherein the noise reduction layer is manufactured by any one of thermal spraying processes of arc spraying, flame spraying, and plasma spraying.
3. The method of claim 2, wherein the pressure of the molten jet gas of the arc spraying is 1.0-2.5Mpa during the arc spraying process to form the noise reduction layer.
4. The method as claimed in claim 3, wherein the spraying voltage of the electric arc spraying is 250-350V, the spraying current is 180-220A, the spraying distance is 30-50cm, the spraying angle is 30-90 °, and the wire feeding voltage is 20-25V.
5. The method for preparing a composite layer for a pot as claimed in claim 2, wherein the magnetic isolating metal material is a wire having a diameter of 1.0-1.8 mm.
6. The method for preparing a composite layer for a pot according to any one of claims 1 to 5, wherein the step of roughening the outer wall surface of the pot wall of the pot specifically comprises:
carrying out sand blasting treatment on the outer wall surface of the pot wall;
the surface roughness of the outer wall surface of the pot wall after the sand blasting treatment is between 5 and 9 mu m.
7. The method for preparing a composite layer for a pot as claimed in claim 6, wherein the blasting process is performed under a pressure of 2.5-4Mpa, and the sand blasting machine has a sand mesh of 24-60 mesh.
8. The method for manufacturing a composite layer for a pot according to any one of claims 1 to 5, wherein before the step of forming a hole sealing layer on the surface of the noise reduction layer away from the pot wall and after the step of forming a noise reduction layer on the outer wall surface of the pot wall, further comprising:
carrying out flattening treatment on the surface of the noise reduction layer far away from the pot wall;
and the surface roughness of the noise reduction layer after the flattening treatment is not more than 5 mu m.
9. The method for preparing a composite layer for a pot as claimed in claim 8, wherein the step of planarizing the surface of the noise reduction layer away from the pot wall comprises:
processing the surface of the noise reduction layer, which is far away from the pot wall, by adopting a sanding process;
wherein, the rotating speed range of the rotating tool of the sanding process is 100-3000 r/min; and/or the mesh number of the grinding piece in the sanding process is not less than 36 meshes.
10. The method for preparing a composite layer for a pot according to any one of claims 1 to 5, wherein the step of forming a hole sealing layer on the surface of the noise reduction layer away from the pot wall specifically comprises:
placing the pot wall with the noise reduction layer on a rotary tool;
sponge or cotton cloth is adopted to adsorb the hole sealing agent, and the hole sealing agent is uniformly coated on the surface of the noise reduction layer;
the rotating speed range of the rotating tool is 50-300 revolutions per minute; and/or the sealant is sol-like silane resin; and/or the thickness of the hole sealing layer is between 1 and 50 mu m.
11. The method for preparing a composite layer for a pot as claimed in claim 10, wherein the step of using sponge or cotton cloth to absorb the sealing agent and uniformly applying the sealing agent on the surface of the noise reduction layer further comprises:
drying the pot wall coated with the hole sealing agent;
wherein the drying temperature is between 100 ℃ and 200 ℃, and the drying time is between 5 and 20 minutes.
12. A method of making a composite layer for a cookware according to any of the claims 1 to 5 wherein the thickness of said noise reduction layer is comprised between 0.05-0.25 mm; and/or, the porosity of the noise reduction layer is not more than 2%; and/or the resistivity of the noise reduction layer is not more than 1-10 -7 Ω·m。
13. A composite layer for a pot, characterized in that it is prepared by the method of any one of claims 1 to 12;
the composite layer comprises a noise reduction layer and a hole sealing layer, the noise reduction layer is made of a magnetic isolation metal material, and the hole sealing layer is attached to at least part of the outer surface of the noise reduction layer.
14. A cookware, comprising a pot wall and the composite layer of claim 13, wherein the noise reduction layer of the composite layer is attached to the outer wall surface of the pot wall, and the hole sealing layer of the composite layer is attached to the side of the noise reduction layer away from the pot wall.
15. A cooking appliance comprising the pot of claim 14.
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