CN110338628B - Inner pot and cooking utensil - Google Patents
Inner pot and cooking utensil Download PDFInfo
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- CN110338628B CN110338628B CN201810286081.4A CN201810286081A CN110338628B CN 110338628 B CN110338628 B CN 110338628B CN 201810286081 A CN201810286081 A CN 201810286081A CN 110338628 B CN110338628 B CN 110338628B
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- metal layer
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- coating
- sealing coating
- pot body
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- 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
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- 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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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D181/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon only; Coating compositions based on polysulfones; Coating compositions based on derivatives of such polymers
- C09D181/06—Polysulfones; Polyethersulfones
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention discloses an inner pot and a cooking utensil, wherein the inner pot comprises a pot body, an annular edge wrapping ring made of metal and a sealing coating, an annular flanging is formed at the edge of an upper port of the pot body, the pot body comprises an outer surface metal layer and an inner surface metal layer, an annular mounting groove is formed on the inner side of the annular edge wrapping ring and matched with the annular flanging, the outer surface metal layer and/or the inner surface metal layer are/is an easily-corroded metal layer capable of performing galvanic reaction with the annular edge wrapping ring, and the sealing coating is at least arranged between the easily-corroded metal layer and the inner wall surface of the annular mounting groove so as to block the annular edge wrapping ring from the easily-corroded metal layer. According to the technical scheme provided by the invention, a compact and insulating sealing coating is formed between the annular mounting groove of the annular edge-wrapping ring and the metal layer easy to corrode, and the sealing coating can prevent the permeation of salt water and reduce the flow of electrons, so that the phenomenon that the pot body is corroded can be slowed down or eliminated.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to an inner pot and a cooking utensil.
Background
In order to facilitate a user to hold an inner pot of the electric cooker, to prevent an upper port edge of the inner pot from being damaged due to collision, and to improve the appearance of the inner pot, in the prior art, an annular outward flange is often arranged at the upper port edge of a pot body of the inner pot, and an annular edge wrapping ring is arranged on the annular outward flange. In actual use, performance requirements (such as heat conductivity requirements, rigidity requirements and the like) of the inner pan body and the annular edge covering ring are different, and in the prior art, the inner pan body and the annular edge covering ring are usually made of different metal materials. The annular edge wrapping ring is generally installed in a mode that the annular edge wrapping ring is clamped and fixed on two sides of an annular flanging of the pot body, a gap usually exists between the annular edge wrapping ring and the annular flanging, so that once electrolytes such as saline water or steam enter the gap in the cooking process, galvanic corrosion (generally, the potential of the annular edge wrapping ring is higher than that of the annular flanging) occurs between the annular edge wrapping ring and the annular flanging, and the inner pot is corroded, so that the use of the inner pot is influenced. In addition, gas generated by reaction in the galvanic corrosion process can easily cause bubbles of the non-stick coating of the inner pot, so that the non-stick coating falls off.
Disclosure of Invention
The invention mainly aims to provide an inner pot and a cooking utensil, and aims to solve the problem that the inner pot is corroded due to galvanic reaction between an existing annular edge covering ring and an annular outward flanging of the inner pot.
In order to achieve the above object, the present invention provides an inner pot, comprising:
the pot body is provided with an annular flanging at the edge of an upper port of the pot body and comprises an outer surface metal layer and an inner surface metal layer;
the metal material annular edge-covering ring, the inside of the annular edge-covering ring forms the annular mounting groove, the annular mounting groove and the annular flanging cooperate, the outer surface layer metal layer and/or the inner surface layer metal layer is the metal layer which can be easily corroded and can react with the annular edge-covering ring; and the number of the first and second groups,
and the sealing coating is at least arranged between the corrosion-prone metal layer and the inner wall surface of the annular mounting groove so as to separate the annular edge-wrapping ring from the corrosion-prone metal layer.
Preferably, the seal coat is a resin coat.
Preferably, the material of the seal coat layer includes a molding resin, a fluororesin, and a pigment filler.
Preferably, the molding resin includes at least one of PAI, PI, PES, PEEK, and PPS; and/or the presence of a gas in the gas,
the fluororesin includes at least one of PTFE, FEP, and PFA; and/or the presence of a gas in the gas,
the pigment filler comprises alumina or sericite.
Preferably, the mass of the molding resin accounts for 50-90% of the mass of the seal coating layer;
the mass of the fluororesin accounts for 10-30% of the mass of the sealing coating;
the mass of the pigment and the filler accounts for 0-20% of the mass of the sealing coating.
Preferably, the sealing coating comprises the following components by mass specific gravity: 57% PES, 8% PAI, 28% FEP and 7% alumina.
Preferably, the pot body is formed by laminating a plurality of metal layers, and the inner surface metal layer is the metal layer easy to corrode.
Preferably, the annular flanging comprises a clamping section and an arc transition section which is connected with the clamping section and the lower end of the pot body, and the annular edge-covering ring is clamped on the clamping section;
the sealing coating is at least arranged on the upper surface of the clamping section so as to separate the upper side wall of the annular mounting groove from the inner surface metal layer.
Preferably, sealing coating covers wholly the upper surface of annular flanging, just sealing coating has and is located the inside inner of annular mounting groove and is located the outside outer end of annular mounting groove, wherein, certainly the outer end court the inner direction, sealing coating's outer end is the thickening setting gradually.
Preferably, the material of the metal layer easy to corrode is aluminum; and/or the presence of a gas in the gas,
the annular edge covering ring is made of stainless steel or titanium alloy; and/or the presence of a gas in the gas,
the outer surface metal layer is made of carbon steel or cast iron.
Preferably, the inner surface metal layer is covered with a non-stick coating, and the non-stick coating is arranged to cover the sealing coating; and/or the presence of a gas in the gas,
and an outer spraying layer is coated on the outer surface metal layer.
The invention also proposes a cooking appliance comprising an inner pan, said inner pan comprising:
the pot body is provided with an annular flanging at the edge of an upper port of the pot body and comprises an outer surface metal layer and an inner surface metal layer;
the metal material annular edge-covering ring, the inside of the annular edge-covering ring forms the annular mounting groove, the annular mounting groove and the annular flanging cooperate, the outer surface layer metal layer and/or the inner surface layer metal layer is the metal layer which can be easily corroded and can react with the annular edge-covering ring; and the number of the first and second groups,
and the sealing coating is at least arranged between the corrosion-prone metal layer and the inner wall surface of the annular mounting groove so as to separate the annular edge-wrapping ring from the corrosion-prone metal layer.
In the technical scheme provided by the invention, a dense and insulating sealing coating is formed between the inner wall surface of the annular mounting groove of the annular edge-covering ring and the metal layer easy to corrode so as to separate the annular edge-covering ring from the metal layer easy to corrode, the sealing coating can prevent the permeation of saline water and reduce the flow of electrons, thereby slowing or eliminating the phenomenon that the pot body is corroded.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of an inner pot provided in the present invention;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The present invention provides a cooking appliance, which may be an electric cooker or a pressure cooker, etc., and will be described below by taking an electric cooker as an example, the cooking appliance includes an inner pot, and fig. 1 and 2 are embodiments of the inner pot provided by the present invention.
Referring to fig. 1 and 2, in this embodiment, the inner pot 100 includes a pot body 1, an annular rim 2 made of a metal material, and a sealing coating 3, an annular outward flange 11 is formed at an upper port edge of the pot body 1, the pot body 1 includes an outer surface metal layer 12 and an inner surface metal layer 13, an annular mounting groove 21 is formed at an inner side of the annular rim 2, the annular mounting groove 21 is matched with the annular outward flange 11, the outer surface metal layer 12 and/or the inner surface metal layer 13 is an easily-corroded metal layer capable of performing an original battery reaction with the annular rim 2, and the sealing coating 3 is at least disposed between the easily-corroded metal layer and an inner wall surface of the annular mounting groove 21 to block the annular rim 2 from the easily-corroded metal layer.
In the technical scheme provided by the invention, the sealing coating 3 is arranged between the inner wall surface of the annular mounting groove 21 of the annular edge covering ring 2 and the metal layer easy to corrode, and the sealing coating 3 is compact and insulating (generally, a resin coating is selected as the sealing coating 3, so that the obtained sealing coating 3 has good compactness and good insulating property), and thus the annular edge covering ring 2 is separated from the metal layer easy to corrode through the sealing coating 3, the sealing coating 3 can prevent the permeation of saline water and reduce the flow of electrons, and the phenomenon that the pot body 1 is corroded can be reduced or eliminated.
The outer surface metal layer 12 and/or the inner surface metal layer 13 of the pot body 1 are corrosion-prone metal layers, the total number of layers of the pot body 1 may not be specifically limited, for example, the number of layers of the pot body 1 may be one, at this time, the outer surface metal layer 12 and the inner surface metal layer 13 are the same layer, of course, the pot body 1 may also be two or more than two layers, and generally, the outer surface metal layer 12 and the inner surface metal layer 13 are made of different materials, for example, please refer to fig. 2, in this embodiment, the pot body 1 is formed by layering multiple metal layers, and the inner surface metal layer 13 is the corrosion-prone metal layer. The sealing coating 3 is arranged between the metal layer easy to corrode and the inner wall surface of the annular mounting groove 21, the sealing coating 3 can be arranged on the pot body 1 or on the annular edge covering ring 2, and compared with the arrangement of the sealing coating 3 on the annular edge covering ring 2, the sealing coating 3 is required to be arranged on the inner wall surface of the annular mounting groove 21, the pot body 1 is provided with the sealing coating 3, so that the sealing coating 3 is usually arranged on the pot body 1.
Specifically, referring to fig. 2, in this embodiment, the annular flanging 11 includes a clamping section 111 and an arc-shaped transition section 112 connecting the clamping section 111 and the lower end of the pot body 1, the annular edge covering ring 2 is clamped on the clamping section 111, and the sealing coating 3 is at least disposed on the upper surface of the clamping section 111 to block the upper sidewall of the annular mounting groove 21 from the inner surface metal layer 13, so as to slow down or eliminate the corrosion of the inner surface metal layer 13.
The sealing coating 3 may be partially disposed on the upper surface of the annular flanging 11, and referring to fig. 2, in this embodiment, the sealing coating 3 covers the entire upper surface of the annular flanging 11, so that the process is simple, and is suitable for large-scale mass production of products, and compared with the local disposition of the sealing coating 3, it can prevent a large amount of liquid accumulated on the annular flanging 11 as an electrolyte during the cooking process, and connect the upper surface of the annular flanging 11, on which the sealing coating 3 is not disposed, with the annular edge-surrounding ring 2, thereby causing the corrosion-prone metal layer to be corroded.
In order to avoid sealing coating 3 with the department of junction boundary line is comparatively obvious for the pot body 1, leads to influencing the problem of the whole outward appearance of product, in this embodiment, sealing coating 3 has and is located the inside inner of annular mounting groove 21 and is located the outside outer end of annular mounting groove 21, certainly the outer end court the inner direction, sealing coating 3's outer end is the thickening setting gradually, so, sealing coating 3's outer end with comparatively level and smooth transition has been formed between the pot body 1, and the boundary line can not comparatively obvious, and, can also avoid sealing coating 3's the easy problem that drops that is worn and torn at the edge.
The galvanic reaction between the metal layer easy to corrode of the pot body 1 and the annular surrounding ring 2 can occur, generally because the two materials have different potentials, and the potential of the material of the annular surrounding ring 2 is higher than that of the metal layer easy to corrode, so that the metal layer easy to corrode can be corroded. In order to avoid the annular flanging 11 of the pot body 1 being easily damaged by collision and to achieve overall aesthetic appearance of the product, generally, the annular edge covering ring 2 is made of stainless steel or titanium alloy, specifically, in this embodiment, the annular edge covering ring 2 is made of 304 stainless steel, so that the cost performance is high. However, in order to improve the heat-conducting performance of the whole body of the pot body 1 and to facilitate various processes on the inner side surface of the pot body 1, the inner surface metal layer 13 (i.e., the metal layer prone to corrosion) is made of aluminum.
The sealing coating 3 can protect the corrosion-prone metal layer from corrosion because the sealing coating 3 has a low porosity and is a dense insulating layer that can prevent brine from penetrating the sealing coating 3 and can reduce the flow of electrons, thereby reducing or eliminating the corrosion of the corrosion-prone metal layer. As described above, in the present embodiment, the seal coat layer 3 is a resin coat layer, and the seal coat layer 3 having a low porosity can be formed by controlling the chemical composition of the seal coat layer 3.
Specifically, in the present embodiment, the material of the seal coat 3 includes a molding resin, a fluororesin, and a pigment and filler, the molding resin may function to bond other chemical components, the fluororesin may function to bond other chemical components and block the penetration of water, and the pigment and filler may function to facilitate the molding of the seal coat 3 and prevent the seal coat 3 from cracking.
Further, in this embodiment, the molding resin may be one or a mixture of several resins selected from PAI, PI, PES, PEEK and PPS, so that the molding resin may be well bonded to other chemical molding, and PAI, PI, PES, PEEK and PPS are food contact grade resins that can be stably maintained at two hundred degrees celsius or more, and do not generate substances harmful to human body during long-term use of the product.
The fluororesin can be one or a mixture of PTFE, FEP, PFA and other resins, so that the fluororesin not only has better hydrophobicity, but also does not generate substances harmful to human bodies in the long-term use process of products.
The pigment and filler comprise non-conductive inorganic materials such as alumina or sericite, so that the pigment and filler can better prevent the sealing coating 3 from cracking, and the pigment and filler are made of insulating materials, so that the flow of electrons in the sealing coating 3 can be reduced, and the protection effect of the sealing coating 3 on the metal layer easy to corrode is improved.
The protective effect of the seal coat 3 on the corrosion-prone metal layer is related to not only the chemical components of the seal coat 3, but also the mixture ratio of the components, in this embodiment, the mass of the fluororesin accounts for 10% to 30% of the mass of the seal coat 3, because if the content of the fluororesin is too low, the hydrophobicity of the seal coat 3 will be reduced, and the blocking effect on brine is poor, and if the content of the fluororesin is too high, the porosity of the seal coat 3 will also be increased, and brine will also easily permeate the seal coat 3, and by setting a proper range for the content of the fluororesin, the blocking effect of the seal coat 3 on brine is better.
Similarly, the mass of the molding resin accounts for 50-90% of the mass of the seal coating 3, the content of the molding resin is too low, and the seal coating 3 is not easy to be bonded and molded; too high a content also affects the content of other ingredients.
As above, in this embodiment, the mass of the pigment and filler accounts for 0% to 20% of the mass of the seal coating 3, and too high content of the pigment and filler also affects the content of other components, thereby affecting the dense insulation performance of the seal coating 3.
Specifically, in the present embodiment, the seal coat 3 includes the following components in specific gravity by mass: 57% PES, 8% PAI, 28% FEP and 7% alumina, so that the sealing coating 3 has a good protection effect on the corrosion-prone metal layer, and the sealing coating 3 is easy to form and durable.
As described above, in this embodiment, the pot body 1 is formed by laminating a plurality of metal layers, the inner surface metal layer 13 of the pot body 1 is a corrosion-prone metal layer, and the corrosion-prone metal layer is made of aluminum. Similarly, in this embodiment, the material of the outer surface metal layer 12 is limited to be carbon steel or cast iron, and the outer layer of the pot body 1 is made of carbon steel or cast iron, so that not only can the overall strength of the pot body 1 be ensured and the problem of easy collision and damage be avoided, but also the pot body 1 can be applied to electromagnetic heating and electric heating, and the universality of the pot body 1 is improved.
Specifically, in this embodiment, the thickness of the pot body 1 is 1 ~ 5mm, because the pot body 1 thickness is too thin not easily machine-shaping, and intensity is relatively poor, and thickness is too thick, also can cause the waste of cost, so set up, through selecting suitable thickness scope the pot body 1 not only easily processes and the cost is moderate.
Because various functional coatings are generally made on the inner side surface of the pot body 1, before the coating is formed on the inner side surface of the pot body 1, the inner side surface of the pot body 1 needs to be polished, so that the inner surface metal layer 13 of the pot body 1 is not easy to be arranged too thin, specifically, in the embodiment, the thickness of the inner surface metal layer 13 accounts for 10% -50% of the thickness of the pot body 1, the problem that the inner surface metal layer 13 is too thin and is easy to be polished off can be avoided, the heat conduction performance of the pot body 1 is improved, and the problems that the cost is wasted and the overall strength of the pot body 1 is influenced due to the fact that the inner surface metal layer 13 is too thick are also avoided.
In order to meet various requirements of users on product performance, referring to fig. 2, a non-stick coating 4 may be coated on the inner surface metal layer 13 to prevent food from sticking to a pan, specifically, in this embodiment, the non-stick coating 4 is a fluororesin coating or a ceramic non-stick coating, and thus, the non-stick coating 4 has good performance and a stable structure, and no substances harmful to a human body are generated in a heating process. Similarly, an outer spray coating 5 such as an antirust coating or an abrasion resistant coating may be applied to the outer surface metal layer 12.
Further, in order to prevent the non-stick coating 4 from being peeled off from the edge, in this embodiment, the non-stick coating 4 is extended to the upper surface of the annular outward flange 11, so that the edge of the non-stick coating 4 is located in the annular mounting groove 21, and thus the non-stick coating 4 is not easily peeled off from the edge, and in this embodiment, the seal coating 3 is firstly disposed on the upper surface of the annular outward flange 11, and then the non-stick coating 4 is disposed, that is, the non-stick coating 4 is disposed to cover the seal coating 3, because the non-stick coating 4 can play a role in protecting the seal coating 3, and the problem that the seal coating 3 is worn by the annular edge covering ring 2 due to direct contact between the seal coating 3 and the annular edge covering ring 2 is avoided.
Similarly, in order to prevent the outer sprayed layer 5 from peeling off from the edge, in the present embodiment, the outer sprayed layer 5 is provided to extend to the lower surface of the annular flange 11.
In order to verify that the sealing coating 3 can protect the metal layer susceptible to corrosion, the present invention provides an experiment, specifically as follows:
1. coating a special double-layer water-based non-stick coating (hereinafter referred to as a pot 1) for a commercial electric cooker on an inner pot (made of an iron-aluminum composite plate, the inner layer is an aluminum layer, and the aluminum layer is a metal layer easy to corrode) of the existing electric cooker, and then wrapping the pot 1 with a stainless steel wrapping ring;
2. firstly coating a sealing coating (the sealing coating comprises PES, PAI, FEP and aluminum oxide, and the mass ratio of the PES, PAI, FEP and aluminum oxide is 57%: 8%: 28%: 7%) on the edge of an inner pot of the existing electric cooker, then coating a special double-layer waterborne non-stick coating (hereinafter referred to as a pot 2) for the commercial electric cooker, and finally using a stainless steel edge wrapping ring to wrap the pot 2;
3. respectively adopting a first test scheme and a second test scheme to test the pan 1 and the pan 2;
3.1, test scheme one: respectively placing 1.25% of 2/3 saline water with the maximum scale in pan 1 and pan 2, respectively placing electrodes into the saline water and the surface of stainless steel edge wrapping ring, applying 10V voltage between the two electrodes, and measuring the electrified current;
3.2, test protocol two: respectively filling salt water with 5% of full scale in a pot 1 and a pot 2, cooking for 8 hours by full-open fire of the electric cooker, adding water every half hour, ensuring that the water level is under the full scale, adjusting the electric cooker to a heat preservation state after finishing cooking for 8 hours, preserving heat for 16 hours, completing a cycle from cooking to heat preservation, pouring the salt water after completing each cycle, checking whether the non-stick coating is foamed, falls off and the like, and recording the number of corroded cycles, wherein no corrosion phenomenon exists in four cycles.
The measured data are shown in Table 1 below.
TABLE 1
| Test scheme one | Test scheme two | |
| Pan 1 | 3.45mA | 0.008 |
| Pan | ||
| 2 | The foaming phenomenon occurs around the edge covering ring after 1 cycle | After 4 cycles, no significant corrosion was observed |
As can be seen from the data in table 1, the sealing coating 3 can protect the corrosion-prone metal layer of the inner pan 100.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (11)
1. An inner pan, comprising:
the pot body is provided with an annular flanging at the edge of an upper port of the pot body and comprises an outer surface metal layer and an inner surface metal layer;
the metal material annular edge-covering ring, the inside of the annular edge-covering ring forms the annular mounting groove, the annular mounting groove and the annular flanging cooperate, the outer surface layer metal layer and/or the inner surface layer metal layer is the metal layer which can be easily corroded and can react with the annular edge-covering ring; and the number of the first and second groups,
the sealing coating is at least arranged between the metal layer easy to corrode and the inner wall surface of the annular mounting groove so as to isolate the annular edge wrapping ring from the metal layer easy to corrode;
the pot body is formed by connecting a plurality of metal layers in layers, and the inner surface metal layer is the metal layer easy to corrode;
the annular flanging comprises a clamping section and an arc transition section which connects the clamping section and the lower end of the pot body, and the annular edge-covering ring is clamped on the clamping section;
the inner surface metal layer is covered with a non-stick coating, and the non-stick coating covers the sealing coating and extends to the upper surface of the annular flanging.
2. The inner pan of claim 1, wherein the seal coating is a resin coating.
3. The inner pan of claim 2, wherein the material of the sealing coating comprises molding resin, fluorine resin and pigment.
4. The inner pan of claim 3, wherein the molding resin comprises at least one of PAI, PI, PES, PEEK, and PPS; and/or the presence of a gas in the gas,
the fluororesin includes at least one of PTFE, FEP, and PFA; and/or the presence of a gas in the gas,
the pigment filler comprises alumina or sericite.
5. The inner pan of claim 3, wherein the mass of the mold resin comprises 50% to 90% of the mass of the seal coat;
the mass of the fluororesin accounts for 10-30% of the mass of the sealing coating;
the mass of the pigment and the filler accounts for 0-20% of the mass of the sealing coating.
6. The inner pan of claim 5, wherein the seal coating comprises the following components by mass: 57% PES, 8% PAI, 28% FEP and 7% alumina.
7. The inner pan of claim 1, wherein the annular flanging comprises a clamping section and an arc-shaped transition section connecting the clamping section and the lower end of the pan body, and the annular edge-covering ring is clamped on the clamping section;
the sealing coating is at least arranged on the upper surface of the clamping section so as to separate the upper side wall of the annular mounting groove from the inner surface metal layer.
8. The inner pan of claim 7, wherein the sealing coating covers the entire upper surface of the annular flange and has an inner end located inside the annular mounting groove and an outer end located outside the annular mounting groove, wherein the outer end of the sealing coating is gradually thickened from the outer end toward the inner end.
9. The inner pan of claim 1, wherein the corrosion-prone metal layer is aluminum; and/or the presence of a gas in the gas,
the annular edge covering ring is made of stainless steel or titanium alloy; and/or the presence of a gas in the gas,
the outer surface metal layer is made of carbon steel or cast iron.
10. The inner pan of claim 1, wherein the outer surface metal layer is coated with an outer sprayed coating.
11. A cooking appliance comprising an inner pan as claimed in any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810286081.4A CN110338628B (en) | 2018-04-02 | 2018-04-02 | Inner pot and cooking utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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