CN108158387B - Enamel inner container for cooking utensil - Google Patents
Enamel inner container for cooking utensil Download PDFInfo
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- CN108158387B CN108158387B CN201810132880.6A CN201810132880A CN108158387B CN 108158387 B CN108158387 B CN 108158387B CN 201810132880 A CN201810132880 A CN 201810132880A CN 108158387 B CN108158387 B CN 108158387B
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- glaze layer
- stick coating
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- 210000003298 dental enamel Anatomy 0.000 title claims abstract description 172
- 238000010411 cooking Methods 0.000 title claims abstract description 35
- 239000011248 coating agent Substances 0.000 claims abstract description 74
- 238000000576 coating method Methods 0.000 claims abstract description 74
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 72
- 239000010410 layer Substances 0.000 claims description 170
- 238000005245 sintering Methods 0.000 claims description 20
- 239000011247 coating layer Substances 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 241000209094 Oryza Species 0.000 description 8
- 235000007164 Oryza sativa Nutrition 0.000 description 8
- 229910052573 porcelain Inorganic materials 0.000 description 8
- 235000009566 rice Nutrition 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 235000013305 food Nutrition 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 210000000232 gallbladder Anatomy 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005338 heat storage Methods 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 235000021055 solid food Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 235000013547 stew Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
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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
-
- 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
-
- 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
- A47J36/025—Vessels with non-stick features, e.g. coatings
-
- 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
- A47J36/04—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay the materials being non-metallic
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Cookers (AREA)
Abstract
The invention provides an enamel liner for a cooking utensil, which comprises a cast iron liner body, wherein an enamel glaze layer is sintered on the outer surface of the cast iron liner body, a non-stick coating is sprayed on the inner surface of the cast iron liner body, a flanging which is outward in the radial direction is arranged at the liner opening of the cast iron liner body, the enamel glaze layer and the non-stick coating both extend to the flanging, corners are respectively arranged between the outer end surface of the flanging and the top surface and the bottom surface of the flanging, and the joint of the enamel glaze layer and the non-stick coating is positioned at one corner. The inner surface and the outer surface of the liner disclosed by the invention are respectively provided with the non-stick coating and the enamel glaze layer, and the liner has the characteristics of few defects, attractive appearance and good hand feeling.
Description
Technical Field
The invention relates to the technical field of kitchen appliances, in particular to an enamel liner for a cooking utensil.
Background
The iron inner container has good heat storage performance, and has a rice cooking effect superior to that of inner containers made of other materials, so that the iron inner container is widely applied to cooking appliances such as electric cookers, electric pressure cookers and the like in the existing market. The optimal liner material is cast iron, and the cast iron surface is difficult to level and smooth due to the casting process of the cast iron, so that the iron liner adopted in the current market is formed by stretching a thick iron plate, and the cost is reduced.
The coating that cast iron was used is mostly enamel, and the combination of enamel glaze layer and the rough surface of cast iron just does benefit to the two. The cast iron enamel pot is popular with consumers due to the thick and heavy feeling, beautiful and elegant appearance, strong corrosion resistance and good hand feeling. However, the existing cast iron enamel pots are mostly used as stews because the enamel is poor in non-stick property and not ideal in effect of cooking solid food, otherwise, the enamel layer at the end of the enamel glaze layer is easy to have defects, and the appearance of the enamel is influenced if gaps at the end are obvious. Although the prior art carelessly leaks the cast iron enamel inner container, the disclosure of the prior art only considers the functional aspects such as the inner and outer multi-layer angles, and the like, does not relate to the specific connection problem, and the prior market does not see the inner container really provided with the enamel glaze layer, so how to really use the inner container as the inner container of an electric rice cooker, an electric pressure cooker and the like, and the solution thereof needs to be solved.
Disclosure of Invention
The invention aims to provide an enamel liner for a cooking utensil, which has the characteristics of less defects, attractive appearance and good hand feeling, wherein the inner surface and the outer surface of the enamel liner are respectively provided with a non-stick coating and an enamel glaze layer.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a cooking utensil is with enamel inner bag, includes the cast iron courage body, the surface sintering of the cast iron courage body has enamel glaze layer, and the internal surface of the cast iron courage body is then sprayed and is had non-stick coating, the courage mouth department of the cast iron courage body has radial outside turn-ups, enamel glaze layer and non-stick coating all extend to the turn-ups, turn-ups outer terminal surface respectively with turn-ups top surface and bottom surface between have the turning, enamel glaze layer with non-stick coating's junction is located a corner wherein.
The non-stick coating is sprayed on the inner surface of the cast iron liner body, so that the non-stick property of the liner during cooking is ensured. The enamel glaze layer is sintered on the outer surface of the cast iron liner body to improve the corrosion resistance of the cast iron liner body and the appearance of the liner. Because the enamel glaze layer needs high-temperature sintering, the manufacturing sequence is prior to the non-stick coating, wherein, the enamel glaze layer and the non-stick coating both extend to the flanging, the joint of the enamel glaze layer and the non-stick coating is positioned at the corner of the outer end face of the flanging, namely, the enamel glaze layer ends at the corner of the flanging, and the unevenness at the end of the enamel glaze layer is limited in a small height area because the height of the outer end face of the flanging is smaller, namely, the defect area is limited in a small area, the generation of defects is reduced, and the unevenness at the corner is not easy to be perceived by a user, so the appearance is not influenced. Moreover, the enamel glaze layer ends in the corner of the flanging, the bottom surface of the flanging is covered by the enamel glaze layer, and a user can feel better when holding the flanging by hand. In addition, the joint of the enamel glaze layer and the non-stick coating is positioned at the corner of the outer end face of the flanging, is not positioned on the top face of the flanging, is not covered by the cover body of the cooking utensil, and steam and the like are difficult to contact and permeate into the joint during cooking, so that the corrosion resistance of the liner is improved.
In some embodiments of the present invention, the corner between the outer end face and the top face of the flange is a first corner, and the location where the enamel layer and the non-stick coating are connected is located at the first corner. The enamel glaze layer extends to the first corner, so that the outer end face and the bottom face of the whole flanging are covered by the enamel glaze layer, the non-stick coating is prevented from extending to the outer side of the outer end face of the flanging, the phenomenon that the non-stick coating is scraped when the outer end face is scraped can be avoided, and the enamel glaze layer is high in hardness and strong in scraping resistance and is difficult to damage when being scraped. On the other hand, the enamel glaze layer has thick hand feeling, attractive appearance and good visual experience of users; when the user holds the flanging by hand, part of fingers touch the outer end face of the flanging, so that the hand feeling is better.
In some embodiments of the invention, the corner between the outer end face and the bottom face of the flange is a second corner, and the position where the enamel layer and the non-stick coating are connected is located at the second corner. Because the enamel glaze layer and the non-stick coating are connected at the second corner, the connection part of the enamel glaze layer and the non-stick coating faces downwards, even if air leakage conduction refrigeration condensation water slides from the flanging part during cooking, the condensation water cannot permeate into the cast iron liner body from the connection part, and the corrosion resistance of the liner is further improved.
In some embodiments of the present invention, the corner where the enamel glaze layer and the non-stick coating layer are connected is a chamfer or a fillet. The corner is designed into a structure with a smooth surface, such as a chamfer or a fillet, so that the problem that the enamel glaze layer and the non-stick coating are easily scraped off due to the fact that the joint of the enamel glaze layer and the non-stick coating is positioned at a sharp corner is solved; in addition, the enamel glaze layer and the non-stick coating layer both extend to the chamfer or the fillet, and a superposition area can be arranged at the joint of the enamel glaze layer and the non-stick coating layer during manufacturing, so that the bonding strength and the layering sense of the enamel glaze layer and the non-stick coating layer are improved. Moreover, because the surface of the chamfer or the fillet has a certain length distance, in the manufacturing inspection process, whether the sintering of the enamel glaze layer is qualified or not can be judged by observing whether the sintered enamel glaze layer extends to the upper chamfer or the fillet, and whether the non-stick coating extends to the upper chamfer or the fillet or not can be observed, so that whether the spraying of the non-stick coating is qualified or not can be judged.
In some embodiments of the invention, the height of the corner where the enamel layer and the non-stick coating are joined is 0.3-1.0 mm. The defect is controlled within the range of 0.3-1.0mm height, and the area of the connecting area of the enamel layer and the non-stick coating layer under the size is not too small, so that the problem of poor connection exists.
In some embodiments of the invention, the non-stick coating covers the enamel layer at the corners. Because the enamel glaze layer is formed by sintering, the smoothness of the section at the end is poor, the non-stick coating covers the enamel glaze layer, the section with poor smoothness is prevented from being exposed, and therefore the infiltration of water and the like is avoided. On the other hand, when the liner is collided or dropped, the most likely collision area is the corner of the flanging, the enamel glaze layer is high in hardness but crisp in texture, good in scratch resistance but not impact resistant, and the impact resistance of the non-stick coating is superior to that of the enamel glaze layer, so that the non-stick coating covers the enamel glaze layer at the corner, the ceramic collapse prevention capability of the corner can be improved when the liner is dropped or collided, and the service life of the liner is prolonged.
In some embodiments of the invention, the non-stick coating is coated on the enamel glaze layer with a thickness smaller than that of the enamel glaze layer coated on the inner wall of the cast iron container body, and the enamel glaze layer is coated on the corner of the junction with a thickness smaller than that of the enamel glaze layer coated on the outer wall of the cast iron container body. Because the area of influence of collapsing porcelain is relevant with its thickness, and the less its area of influence of thickness is less, wherein enamel glaze layer cover in thickness on the junction corner is less than the thickness of covering on the cast iron courage body outer wall the less enamel glaze layer of thickness is adopted in the corner, when the unexpected collision that takes place, can reduce its area of collapsing porcelain, has effectively avoided the large tracts of land to bump porcelain. In addition, the thickness of the non-stick coating covering the enamel glaze layer is smaller than that of the non-stick coating covering the inner wall of the cast iron liner body, so that obvious step traces at the joint of the enamel glaze layer and the cast iron liner body are avoided, and smoother transition is realized.
In some embodiments of the invention, the wall thickness of the upper part of the side wall of the cast iron liner body and the flanging is larger than that of the lower part of the side wall of the cast iron liner body. The inner bag is because need use with the cooking utensil cooperation, the planarization to the turn-ups top surface has the requirement, otherwise easily sealed badly, however the enamel inner bag is different from current other inner bags, enamel glaze layer need just can combine with the cast iron courage body through high-temperature sintering, and the temperature of high-temperature sintering is about 800 degrees, the cast iron courage body easily takes place deformation after the sintering, adopt thick courage body lateral wall upper portion and turn-ups and adopt the design of thin courage body lateral wall lower part in this scheme, in sintering and cooling process, courage body upper portion and turn-ups self deflection are little, the ascending influence of deformation at courage body lower part and courage bottom then can be weakened by courage body upper portion, little to the influence of turn-ups, therefore the planarization of turn-ups top surface can obtain guaranteeing.
In some embodiments of the invention, the position of the bottom of the cast iron liner body is recessed towards the inside of the liner body to form a temperature measuring area with reduced thickness. The cast iron obtains better heat storage capacity due to the thickness, however, the temperature measurement of the current inner container is carried out, the temperature of the bottom surface of the inner container is detected, the measured temperature and the temperature of food in the inner container have certain delay due to the time difference of heat transfer at the thicker bottom, and the temperature of the food in the inner container cannot be reflected in time. In addition, when the enamel glaze layer is sintered, the liner bottom can deform, the temperature measuring area is designed to be concave towards the inner part of the liner body, the area of the placing area of the liner is reduced, the deformation of the temperature measuring area cannot influence the flatness of the placing surface of the liner bottom, and the liner placing is facilitated.
In some embodiments of the invention, an aluminum layer is fused between the cast iron liner body and the non-stick coating. After the aluminum layer is sprayed, the bonding strength of the non-stick coating is increased, in addition, the heat transfer performance of the aluminum is superior to that of iron, and the heat of cast iron can be rapidly transferred out, so that the heating efficiency is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a structure according to a first embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a portion of a cuff and its vicinity according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a rice cooker according to an embodiment of the present invention.
FIG. 4 is a schematic sectional view of a partial structure of a second flange and its vicinity according to an embodiment of the present invention;
FIG. 5 is a schematic sectional view of a partial structure of a third flange and its vicinity according to an embodiment of the present invention;
FIG. 6 is a schematic sectional view of the structure of the fourth embodiment of the present invention;
fig. 7 is a schematic perspective view of a fourth embodiment of the present invention.
Reference numerals:
the enamel glaze layer comprises a cast iron liner body 10, an inner wall 101, an outer wall 102, a side wall upper portion 103, a side wall lower portion 104, a liner bottom 105, a temperature measuring area 106, a placing surface 107, a cooker cover 20, a flanging 1, an outer end face 11, a top face 12, a bottom face 13, a first corner 14, a second corner 15, an enamel glaze layer 2, a covered glaze layer section 21, a non-stick coating 3, a covered non-stick section 31 and an aluminum layer 4.
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.
Example one
Referring to fig. 1 to 3, it is shown a related view of an enamel liner for a cooking utensil according to a first embodiment of the present invention.
Referring to fig. 1, the enamel liner for the cooking utensil comprises a cast iron liner body 10, wherein an enamel glaze layer 2 is sintered on the outer surface of the cast iron liner body 10, a non-stick coating 3 is sprayed on the inner surface of the cast iron liner body 10, and the non-stick coating 3 is preferably made of teflon. The non-stick coating 3 is sprayed on the inner surface of the cast iron liner body 10, so that the non-stick property of the liner during cooking is ensured. The enamel glaze layer 2 is sintered on the outer surface of the cast iron liner body 10, so that the corrosion resistance of the cast iron liner body 10 and the appearance of the liner are improved.
Referring to fig. 2 again, a radially outward flange 1 is arranged at the mouth of the cast iron container body 10, the enamel glaze layer 2 and the non-stick coating 3 both extend to the flange 1, corners are respectively arranged between the outer end surface 11 of the flange 1 and the top surface 12 and the bottom surface 13 of the flange 1, and the joint of the enamel glaze layer 2 and the non-stick coating 3 is located at one corner.
The enamel layer 2 is ended at the corner of the flanging 1, and the height of the corner is smaller because the outer end surface 11 of the flanging 1 is lower, so that the unevenness of the end of the enamel layer 2 is limited in a small height area, namely, the defect area is limited in a small area, and the generation of defects is reduced.
In addition, unevenness at the corners is not easily perceived by the user, and thus the appearance is not affected. Furthermore, the enamel glaze layer 2 ends at the corner of the flange 1, and the bottom surface 13 of the flange 1 is covered by the enamel glaze layer 2, so that the user feels better when holding the flange 1 by hand.
The joint of the enamel glaze layer 2 and the non-stick coating 3 is positioned at the corner of the flanging 1, which means that the joint is not positioned on the top surface 12 of the flanging 1 and is not covered by the cover body of the cooking utensil, and steam and the like are difficult to contact and permeate into the joint of the enamel glaze layer 2 and the non-stick coating 3 during cooking, so that the corrosion resistance of the liner is improved, and the antirust effect is good.
With continued reference to fig. 2, the corner between the outer end face 11 of the flange 1 and the top face 12 of the flange 1 is a first corner 14, this embodiment preferably having this first corner 14 as the connection point for the enamel layer 2 and the non-stick coating 3.
The enamel glaze layer 2 extends to the first corner 14, so that the outer end surface 11 and the bottom surface 13 of the whole flanging 1 are covered by the enamel glaze layer 2, when a user holds the flanging 1, part of fingers touch the outer end surface 11, the hand feeling is good, the enamel glaze layer 2 is thick in hand feeling, attractive in appearance and good in user experience.
In the normal use process of the liner, the outer end surface 11 of the flanging 1 is easy to scrape against the wall of a kitchen or the wall of a water tank, the non-stick coating 3 of the embodiment extends to the first corner 14 without touching the outer end surface 11 of the flanging 1, so that the non-stick coating 3 can be prevented from being scraped when the outer end surface 11 is scraped, and the enamel glaze layer 2 is high in hardness and strong in scraping resistance and is difficult to damage when being scraped.
Preferably, the height of the first corner 14 is 0.3-1.0mm, and the height of the corner is controlled to be in the range of 0.3-1.0, so as to limit the defect within a small range, and the area of the joint region between the enamel layer 2 and the non-stick layer 3 is not too small to cause the problem of poor joint. Wherein the height refers to: and in a normal use state, the opening of the liner of the inner container faces upwards and is horizontally placed, and the distance in the vertical direction is increased.
Wherein, the corner at the joint of enamel glaze layer 2 and non-stick coating layer 3, namely first corner 14, is a chamfer or a fillet. The first corner 14 is provided with a structure with a smooth surface, such as a chamfer or a fillet, so that the problem that the joint of the enamel glaze layer 2 and the non-stick coating 3 is positioned at a sharp corner and is easily scraped off is solved. In addition, the enamel glaze layer 2 and the non-stick coating layer 3 both extend to a chamfer or a fillet, and a certain length overlapping area is allowed to be arranged at the joint of the enamel glaze layer and the non-stick coating layer during manufacturing, so that the bonding strength and the layering sense of the enamel glaze layer and the non-stick coating layer are improved. Moreover, because the surface of the chamfer or the fillet has a certain length distance, in the manufacturing inspection process, whether the sintering of the enamel glaze layer 2 is qualified or not can be judged by observing whether the sintered enamel glaze layer 2 extends to the chamfer or the fillet, and whether the non-stick coating 3 extends to the chamfer or the fillet or not can be observed, so that whether the spraying of the non-stick coating 3 is qualified or not can be judged.
At present, a sand mold is adopted for casting cast iron, the surface smoothness of the sand mold is poor, and therefore machining is needed for parts with size requirements on an inner container. The liner is used for cooking utensils in pressure cookers, rice cookers and the like, and as shown in fig. 3 by taking a rice cooker as an example, after a cooker cover 20 of the rice cooker is covered, the cooker cover 20 is in sealing fit with the top surface 12 of the flange 1, so that the requirement on the flatness of the top surface 12 of the flange 1 is high, and after the cast iron liner body 10 is molded, the top surface 12 of the flange 1 needs to be machined. In the present embodiment, the first corner 14 is designed as a chamfer or a fillet, and can be directly formed during machining of the top surface 12, and in addition, the first corner 14 with a smaller size in the present embodiment is difficult to directly cast.
Wherein, the thickness of the flanging 1 is selected to be 3-5mm, and the size of the thicker flanging 1 can reduce the deformation of the flanging 1 and the defective rate when casting and sintering the enamel glaze layer at high temperature.
Referring again to fig. 2, non-stick coating 3 covers enamel layer 2 at first corner 14, this covered portion of non-stick coating 3 being referred to for ease of understanding as covering non-stick segment 31. Because the enamel glaze layer 2 is formed by sintering, the smoothness of the section at the end is poor (similar to the saw-tooth shape with irregular tooth shape, tooth pitch and tooth height), the enamel glaze layer 2 is covered by the covering non-stick section 31, the section with poor smoothness is prevented from being exposed, and the penetration of water and the like is avoided. On the other hand, when the liner is collided or dropped, the most likely collision area is the corner of the flanging 1, the enamel glaze layer 2 is high in hardness but crisp in texture, good in scratch resistance but not resistant to impact, and the impact resistance of the non-stick coating 3 is superior to that of the enamel glaze layer 2, so that the non-stick coating 3 covers the enamel glaze layer 2 at the corner, the ceramic collapse prevention capability of the corner can be improved when the liner is dropped or collided, and the service life of the liner is prolonged.
Preferably, the thickness of the covering non-stick section 31 is smaller than that of the non-stick coating 3 covering the inner wall 101 of the cast iron liner body 10, and the thickness value of the covering non-stick section 31 can be selected from 50-200 micrometers and is 50-150 micrometers smaller than that of other positions; the thickness of the enamel layer 2 covering the first corner 14 is smaller than that of the outer wall 102 of the cast iron container body 10, for the convenience of understanding, the part of the enamel layer 2 covering the corner at the junction is called an covered enamel layer section 21, and the thickness value of the covered enamel layer section 21 can be selected to be 50-200 microns and is 50-150 microns smaller than that of other positions.
When falling or other accidental collisions, the part that is strikeed is mostly the corner, and enamel is because the characteristics of intolerance to impact, and the easy emergence of receiving the collision and strikeing porcelain. Although the thicker the enamel glaze layer 2, the more difficult the enamel chipping, the smaller the dimension at the corner, the less the possibility of the enamel layer at the corner being cracked, since the thickness is unlikely to be very thick, and the thickness of the cast iron liner is heavy, in general, when falling and colliding with the corner, the possibility of the enamel layer at the corner being cracked is high, therefore, based on the premise of the occurrence of the enamel chipping, experiments show that the area of the impact of the enamel chipping is related to the thickness, and the area of the impact of the force generated by the enamel chipping is smaller as the thickness is smaller, in this embodiment, the covered layer section glaze 21 with a smaller thickness is adopted at the first corner 14, so that when falling or other accidental collisions occur, the area of the impact of the enamel chipping can be reduced, and the large area of the enamel collision can be effectively avoided. In addition, since the bonding strength between the covered glaze segment 21 having a small thickness and the cast iron container 10 is lower than that of the enamel glaze layer 2 at other positions, the covered glaze segment 21 collapses porcelain to offset the acting force at the time of collision, thereby weakening the force transmitted to the enamel glaze layer 2 at other positions and protecting the enamel glaze layer 2 at other positions.
The thickness of the non-stick section 31 is smaller than that of the non-stick coating 3 covering the inner wall 101 of the cast iron container 10, so that obvious step traces at the joint of the enamel glaze layer 2 can be avoided, and smoother transition can be realized. Preferably, at the joint, the covered non-stick segment 31 and the covered glaze segment 21 smoothly transition.
In general, enamel layer 2 is divided into three layers, from the inside to the outside, a first reinforcing layer, a second reinforcing layer and a highlighted surface layer, each layer being between 50 and 150 microns thick, preferably 75 microns, 100 microns and 125 microns thick. For the covered glaze layer segment 21 described above, it may be only the first underlayer and/or the second underlayer, and the top layer may not be sintered; or the first base layer, the second base layer and the highlight face layer are sintered, but the thickness is thinner than other positions.
For the non-stick coating 3, two layers, a bottom layer and a top layer respectively, are generally sprayed from the inside to the outside, each layer being between 50 and 150 microns thick, preferably 75 microns, 100 microns and 125 microns thick. The thickness of the base and face layers is thinner than elsewhere for the overlying non-stick zone 31 described above.
Example two
Please refer to fig. 4, which is a second illustration of an enamel liner for a cooking utensil according to an embodiment of the present invention. The difference from the first embodiment is that the position where the enamel layer 2 and the non-stick coating layer 3 are connected is different, specifically, as follows.
The corner between the outer end surface 11 of the turned-over edge 1 and the bottom surface 13 of the turned-over edge 1 is a second corner 15, and the position where the enamel glaze layer 2 and the non-stick coating layer 3 are connected is located at the second corner 15.
In this embodiment, since the connection position of the enamel layer 2 and the non-stick coating 3 is located at the second corner 15, so that the connection position of the enamel layer 2 and the non-stick coating 3 faces downward, even if the gas leakage conduction cooling water slides from the flange 1 during cooking, the gas leakage conduction cooling water will not penetrate into the cast iron container 10 from the connection position, thereby obtaining good corrosion resistance.
Preferably, the height of the second corner 15 is 0.3-1.0mm, and the height of the corner is controlled within the range of 0.3-1.0, so as to limit the defects within a small range, and the area of the joint region between the enamel layer 2 and the non-stick layer 3 is not too small to cause the problem of poor joint. Wherein the height refers to: and in a normal use state, the opening of the liner of the inner container faces upwards and is horizontally placed, and the distance in the vertical direction is increased.
At present, a sand mold is adopted for casting cast iron, the surface smoothness of the sand mold is poor, and therefore machining is needed for parts with size requirements on an inner container. Taking a rice cooker as an example, referring to fig. 3 in the first embodiment, after a cooker cover 20 of the rice cooker is closed, the cooker cover 20 is hermetically engaged with the top surface 12 of the flange 1, so that the flatness of the top surface 12 of the flange 1 is required to be high, and after the cast iron liner 10 is molded, the top surface 12 of the flange 1 needs to be machined. In addition, the diameter of the outer end face 11 of the flange 1 also has certain requirements, otherwise the cooker cover 20 is easy to interfere and the cooker cover 20 cannot be closed, so the machining also extends to the outer end face 11 of the flange 1. Returning to fig. 4, in the present embodiment, the second corner 15 is designed to be a chamfer or a fillet and is formed directly when the outer end surface 11 is machined, and in addition, the second corner 15 of the smaller size in the present embodiment is difficult to be directly cast.
With continued reference to fig. 4, the non-stick coating 3 covers said enamel layer 2 at the second corners 15, this covered portion of non-stick coating 3 being referred to as covering non-stick segment 31 for the sake of understanding. Because the enamel glaze layer 2 is formed by sintering, the smoothness of the section at the end is poor (similar to the saw-tooth shape with irregular tooth shape, tooth pitch and tooth height), the enamel glaze layer 2 is covered by the covering non-stick section 31, the section with poor smoothness is prevented from being exposed, and the penetration of water and the like is avoided. On the other hand, when the liner is collided or dropped, the most likely collision area is the corner of the flanging 1, the enamel glaze layer 2 is high in hardness but crisp in texture, good in scratch resistance but not resistant to impact, and the impact resistance of the non-stick coating 3 is superior to that of the enamel glaze layer 2, so that the non-stick coating 3 covers the enamel glaze layer 2 at the corner, the ceramic collapse prevention capability of the corner can be improved when the liner is dropped or collided, and the service life of the liner is prolonged.
Preferably, the thickness of the covering non-stick section 31 is smaller than that of the non-stick coating 3 covering the inner wall 101 of the cast iron liner body 10, and the thickness value of the covering non-stick section 31 can be 50-200 micrometers and is 50-150 micrometers smaller than that of other positions; the thickness of the enamel layer 2 covering the second corner 15 is smaller than that of the outer wall 102 of the cast iron container body 10, for the convenience of understanding, the part of the enamel layer 2 covering the second corner 15 is called an covered enamel layer section 21, and the thickness value of the covered enamel layer section 21 can be selected to be 50-200 microns and is 50-150 microns smaller than that of other positions.
In the case of falling or other accidental collisions, the impacted part is mostly at the corner, while the enamel is likely to break down when impacted by collision due to the characteristic of intolerance to impact, and the thicker the enamel glaze layer 2, the less likely it will break up, however, since the corner of the embodiment has a smaller size, it is difficult to spray the enamel layer with an excessively thick thickness, since the thickness is unlikely to be very thick, while the thickness of the cast iron liner of the embodiment is heavier, in general, when falling and impacting the second corner 15, the enamel layer at the second corner 15 is likely to break up, so on the premise of breaking up, experiments show that the area of impact of breaking up is related to the thickness, the smaller the area of impact of force generated by breaking up on the periphery, and the covered glaze layer segment 21 with a smaller thickness is adopted at the second corner 15, so when falling or other accidental collisions occur, the influence area of the broken porcelain can be reduced, and the large-area porcelain collision is effectively avoided. In addition, since the bonding strength between the covered glaze segment 21 having a small thickness and the cast iron container 10 is lower than that of the enamel glaze layer 2 at other positions, the covered glaze segment 21 collapses porcelain to offset the acting force at the time of collision, thereby weakening the force transmitted to the enamel glaze layer 2 at other positions and protecting the enamel glaze layer 2 at other positions.
The thickness of the non-stick section 31 is smaller than that of the non-stick coating 3 covering the inner wall 101 of the cast iron container 10, so that obvious step traces at the joint of the enamel glaze layer 2 can be avoided, and smoother transition can be realized. Preferably, at the joint, the covered non-stick segment 31 and the covered glaze segment 21 smoothly transition.
In general, enamel layer 2 is divided into three layers, from the inside to the outside, a first reinforcing layer, a second reinforcing layer and a highlighted surface layer, each layer being between 50 and 150 microns thick, preferably 75 microns, 100 microns and 125 microns thick. For the covered glaze layer segment 21 of the present embodiment, it may be only the first underlayer and/or the second underlayer, without sintering the top layer; or the thicknesses of the first underlayer, the second underlayer, and the highlight face layer are thinner than those at other positions.
For the non-stick coating 3, two layers, a bottom layer and a top layer respectively, are generally sprayed from the inside to the outside, each layer being between 50 and 150 microns thick, preferably 75 microns, 100 microns and 125 microns thick. For the overlying non-stick section 31 of this embodiment, the thickness of the bottom and top layers is thinner than elsewhere.
EXAMPLE III
Please refer to fig. 5, which is a third illustration of an enamel liner for a cooking utensil according to an embodiment of the present invention. It differs from the previous embodiment in that an aluminium layer 4 is fused between the cast iron liner 10 and the non-stick coating 3.
After the aluminum layer 4 is sprayed, the bonding strength of the non-stick coating 3 is increased, and in addition, the heat transfer performance of aluminum is superior to that of iron, so that the heat of cast iron can be rapidly transferred out, and the heating efficiency is improved.
Wherein the thickness of the aluminium layer 4 is between 50 and 150 microns, preferably 75 microns, 100 microns and 125 microns.
Example four
Please refer to fig. 6-7, which are four illustrations of an enamel liner for a cooking utensil according to an embodiment of the present invention. Which is different from the above-described embodiment in the following points.
First, referring to fig. 6, the side wall of the cast iron liner 10 is divided into an upper side wall part 103 and a lower side wall part 104, and the upper side wall part 103 and the flange 1 have a larger wall thickness than the lower side wall part 104. Preferably, the thickness of the lower portion 104 of the sidewall is 2.5-3.5mm, preferably 3 mm; the thickness of the upper part 103 of the side wall is 3.2-4.2mm, preferably 3.7 mm; the thickness of the flanging 1 is 3-5mm, preferably 3.5-4.5mm, and preferably 4.0 mm.
The liner needs to be matched with a cooking utensil for use, the smoothness of the top surface 12 of the flanging 1 is required, otherwise, the liner is easy to be sealed badly, however, the enamel liner is different from other existing liners, the enamel glaze layer 2 can be combined with the cast iron liner 10 only through high-temperature sintering, the high-temperature sintering temperature is about 800 degrees, the cast iron liner 10 is easy to deform after sintering, the thicker liner side wall upper portion 103 and the flanging 1 are adopted in the scheme, the thinner liner side wall lower portion 104 is adopted, the deformation of the liner side wall upper portion 103 and the flanging 1 is small during sintering and cooling, the upward influence generated by the deformation of the liner side wall lower portion 104 and the liner bottom 105 can be weakened by the liner side wall upper portion 103, the influence on the flanging 1 is small, and the smoothness of the top surface 12 of the flanging 1 during sintering can be guaranteed.
Referring to fig. 7 again, the position of the gallbladder bottom 105 is recessed into the gallbladder to form a temperature measuring region 106 with a reduced thickness. Preferably, the temperature measuring area 106 is located at the middle position of the gallbladder bottom 105, and the preferred size is that the thickness of the temperature measuring area 106 is 1.5-2.5mm, preferably 2.0 mm; the thickness of the gallbladder bottom 105 of the non-temperature measuring area 106 is 2.5-3.5mm, preferably 3.0 mm.
The cast iron obtains better heat storage capacity due to the thickness, however, the temperature of the inner container bottom is detected by the temperature measurement of the current inner container, the measured temperature and the temperature of food in the inner container have certain delay due to the time difference of heat transfer at the thicker inner container bottom 105, and the temperature of the food in the inner container cannot be reflected in time, and the temperature measuring area 106 with the reduced thickness is arranged in the scheme, so that the consistency with the temperature of the food in the inner container is improved by detecting the temperature of the temperature measuring area 106, and better cooking control is provided.
In addition, when the enamel glaze layer 2 is sintered, the liner bottom 105 is deformed, and the temperature measuring region 106 is designed to be concave towards the inner part of the liner body, so that the area of the placing region of the liner is reduced, and the influence of sintering deformation is reduced. Moreover, the temperature measuring region 106 has a small thickness, so that the deformation amount of the temperature measuring region 106 is larger than that of other positions of the liner bottom 105, and the deformation of the temperature measuring region 106 does not affect the flatness of the placing surface 107 of the liner bottom 105 due to the concave design, thereby being beneficial to placing the liner.
The structural features of the above embodiments can be combined with each other to obtain other embodiments and new embodiments without departing from the spirit of the present invention, and shall also belong to the protection of the present invention.
Unless otherwise expressly stated or limited herein, the terms "central," "lateral," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "radial," "circumferential," and the like, as indicating an orientation or positional relationship are based on the orientation or positional relationship as shown in the figures, and are therefore not to be construed as limiting the invention as it is understood to facilitate the description of the invention and to simplify the description, but to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation.
Furthermore, the terms "first," "second," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to any number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. If there are "a plurality," then the meaning is two or more unless the context clearly dictates otherwise.
Unless otherwise expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are used broadly and encompass, for example, fixed and removable connections or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Unless the context clearly dictates otherwise, if there is a description of a first feature "on" or "under" a second feature, it is to be understood that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a cooking utensil enamel inner bag, includes the cast iron courage body, the surface sintering of the cast iron courage body has enamel glaze layer, and the internal surface of the cast iron courage body is then sprayed and is had non-stick coating, the courage mouth department of the cast iron courage body has radial outside turn-ups, its characterized in that: the enamel glaze layer and the non-stick coating layer both extend to the flanging, corners are arranged between the outer end face of the flanging and the top face and the bottom face of the flanging respectively, the joint of the enamel glaze layer and the non-stick coating layer is located at one corner, and the enamel glaze layer is covered by the non-stick coating layer at the corner.
2. An enamel liner for a cooking utensil as claimed in claim 1, wherein: the corner between the outer end face and the top face of the flanging is a first corner, and the position where the enamel glaze layer is connected with the non-stick coating is located at the first corner.
3. An enamel liner for a cooking utensil as claimed in claim 1, wherein: the corner between the outer end face and the bottom face of the turned edge is a second corner, and the position where the enamel glaze layer is connected with the non-stick coating is located at the second corner.
4. An enamel liner for a cooking utensil as claimed in claim 1, wherein: the corner at the joint of the enamel glaze layer and the non-stick coating is a chamfer or a fillet.
5. An enamel liner for a cooking utensil as claimed in claim 1, wherein: the height of the corner at the joint of the enamel glaze layer and the non-stick coating is 0.3-1.0 mm.
6. An enamel liner for a cooking utensil as claimed in claim 1, wherein: the thickness of the non-stick coating covering on the enamel glaze layer is smaller than that of the non-stick coating covering on the inner wall of the cast iron container body, and the thickness of the enamel glaze layer covering on the corner of the joint is smaller than that of the enamel glaze layer covering on the outer wall of the cast iron container body.
7. An enamel liner for a cooking utensil as claimed in claim 1, wherein: the wall thickness of the upper part of the side wall of the cast iron liner body and the wall thickness of the turned edge are larger than that of the lower part of the side wall of the cast iron liner body.
8. An enamel liner for a cooking utensil as claimed in claim 1, wherein: the bottom of the cast iron liner is recessed towards the inside of the liner to form a temperature measuring area with reduced thickness.
9. An enamel liner for a cooking utensil as claimed in claim 1, wherein: an aluminum layer is sprayed between the cast iron liner body and the non-stick coating in a melting way.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810132880.6A CN108158387B (en) | 2018-02-09 | 2018-02-09 | Enamel inner container for cooking utensil |
| PCT/CN2019/073307 WO2019154141A1 (en) | 2018-02-09 | 2019-01-28 | Enamel liner for use in cooking appliance and cooking appliance |
| TW108103821A TW201934060A (en) | 2018-02-09 | 2019-01-31 | Enamel liner for cooking utensil and cooking utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810132880.6A CN108158387B (en) | 2018-02-09 | 2018-02-09 | Enamel inner container for cooking utensil |
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| CN108158387A CN108158387A (en) | 2018-06-15 |
| CN108158387B true CN108158387B (en) | 2022-04-05 |
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| CN201810132880.6A Active CN108158387B (en) | 2018-02-09 | 2018-02-09 | Enamel inner container for cooking utensil |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019154141A1 (en) * | 2018-02-09 | 2019-08-15 | 九阳股份有限公司 | Enamel liner for use in cooking appliance and cooking appliance |
| CN110859518B (en) * | 2018-08-27 | 2022-11-04 | 佛山市顺德区美的电热电器制造有限公司 | Pot and have its cooking utensil |
| CN110419953B (en) * | 2019-08-30 | 2021-04-30 | 武汉安在厨具有限公司 | Enamel pot enamel layer and electroplated layer treatment process |
| CN116458776A (en) * | 2023-04-07 | 2023-07-21 | 九阳股份有限公司 | Inner container of cooking utensil and cooking utensil |
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