A heating cooking pot
By employing a vertically arranged three-layer composite folded structure on the electric heating cooking pot to protect the edge of the inner pot, the problem of easy corrosion of the inner pot in the existing technology is solved, and the aesthetics and stability are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGMEN JINYI HARDWARE PROD
- Filing Date
- 2025-08-31
- Publication Date
- 2026-07-31
AI Technical Summary
The existing electric heating multi-functional cooking pot has an unsightly and easily corroded outer edge design for the inner pot, which affects its service life and reliability.
The pot features a vertically oriented edge design, with a folded structure dividing the pot's edge into three composite layers. These layers are composed of highly stable, thermally conductive, and corrosion-resistant metal materials, and the folded structure protects the edge from liquid contact and corrosion.
It improves the aesthetics and stability of the inner pot, reduces the risk of corrosion, extends its service life, and saves space.
Smart Images
Figure CN224572543U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric rice cookers, and more specifically, to a heating and cooking pot. Background Technology
[0002] Electric multi-functional cooking pots have become common equipment in home and commercial kitchens. The structure of their core component, the inner pot, directly affects the user experience and product durability. Currently, most mainstream cooking pot inner pots adopt a horizontally extended edge design, where the upper edge of the inner pot extends horizontally to form a wide edge, adapting to the lid's sealing structure or increasing the grip space. However, while this extended edge meets functional requirements, it poses a risk of corrosion and is not aesthetically pleasing. In terms of appearance, when using or storing the inner pot, the horizontally extended edge is prone to bumping against surrounding cookware, affecting not only ease of operation but also potentially causing edge wear due to long-term friction, reducing the product's aesthetics. Furthermore, the horizontally extended design is often accompanied by a thicker edge structure, making the inner pot's center of gravity higher, reducing stability when pouring food or moving cookware, increasing the risk of accidental spills. Regarding material durability, the sides of the inner pot, especially the extended parts, are most susceptible to liquid contact during use. During cooking, broth, condensation, water, or cleaning agents may splash or adhere to the side surfaces. Since the sides of the pot are usually made of metal, prolonged contact with liquids can lead to the following problems: First, if the liquid contains electrolytes or corrosive components, the metal sides are prone to electrochemical corrosion or chemical erosion, manifesting as surface discoloration, pitting, or peeling. Second, the laterally extending edge structure often has gaps or grooves, which easily accumulate liquid and are difficult to dry, forming liquid stagnation zones that further accelerate the localized corrosion process. Side corrosion not only affects the appearance of the pot but may also penetrate the metal layer, leading to a decrease in structural strength and even causing metal ion migration that contaminates food, threatening the user's health.
[0003] Existing technologies mitigate corrosion by applying anti-corrosion coatings or improving manufacturing materials, such as using 304 stainless steel. However, they lack measures for the lateral extension edges: the spraying process struggles to evenly cover complex side structures, such as edge creases and grooves, and the coating is prone to peeling off due to cleaning and friction; upgrading materials would increase production costs, making it difficult to popularize in consumer products. The lateral extension edge design of existing electric heating multi-functional cooking pots neither meets modern users' aesthetic and practical needs, nor does it reduce product lifespan and reliability due to side corrosion problems.
[0004] Therefore, there is an urgent need for a new type of heating cooker with a new edge design that can meet users' needs for aesthetics and practicality, while also preventing side corrosion and improving the product's lifespan and reliability. Utility Model Content
[0005] The present invention aims to overcome at least one of the defects of the prior art and provide a heating cooking pot to solve the problems that the inner rim of the existing heating cooking pot is unsightly, impractical and easily corroded.
[0006] The present invention employs a heating and cooking pot, comprising: a pot body, and a pot inner liner disposed within the pot body. The pot inner liner has a vertical edge extending from the side wall of the pot inner liner on its open side. The vertical edge is in contact with the outer surface of the side wall. The vertical edge is vertically arranged. The vertical edge includes: a first composite layer connected to the food contact surface of the pot inner liner, a second composite layer connected to the heating contact surface of the pot inner liner, and at least one intermediate composite layer disposed between the first composite layer and the second composite layer. The vertical edge is folded to form a wrapping of the first exposed end of the first composite layer and the second exposed end of the second composite layer.
[0007] The inner pot is used to hold food, the vertical edge is for gripping, the first composite layer is made of a highly stable and safe metal, the second composite layer is made of a metal with good thermal conductivity and high strength, and the middle composite layer is made of a corrosion-resistant metal.
[0008] To protect the vertical edge, the vertical edge includes:
[0009] The first folding structure is connected to the side wall and forms a first folding cavity with the side wall;
[0010] The second folding structure is connected to the first folding structure and forms a second folding cavity with the first folding structure for wrapping the second exposed end;
[0011] The third folding structure is connected to the second folding structure and abuts against the sidewall. The third folding structure and the second folding structure form a third folding cavity for wrapping the first exposed end.
[0012] The first fold structure is used to connect the vertical edge to the sidewall, the second fold structure is used to collect water droplets and close the second exposed end, and the third fold structure is used to close the first exposed end.
[0013] To save space, the second folding cavity is located inside the first folding cavity, and the second folding cavity is connected to the third folding cavity.
[0014] This design has a simple structure and saves space occupied by the vertical edges.
[0015] To protect the vertical edge, the first folding cavity includes: a first bending section and a first extension section;
[0016] The first bent section and the first extended section are formed by the first composite layer, the second composite layer and the intermediate composite layer.
[0017] The first bending section and the first extension section are in contact with the outside and are used to protect the structure inside the first bending cavity.
[0018] To protect the second composite layer, the second folded cavity includes: a second bent section and a second extension section;
[0019] The second bending segment and the second extension segment are formed by the first composite layer and the intermediate composite layer.
[0020] The second bending section and the second extension section are used to seal and protect the second composite layer.
[0021] To protect the first composite layer, the third folded cavity includes: a third bending section and a third extension section;
[0022] The third bending section and the third extension section are formed by the intermediate composite layer.
[0023] The third bend and the third extension are used to seal and protect the second composite layer.
[0024] To ensure structural stability, the first folded cavity includes a first bent section and a first extension section, the second folded cavity includes a second bent section and a second extension section, and the third folded cavity includes a third bent section and a third extension section; the lengths of the first extension section, the second extension section, and the third extension section are equal.
[0025] Equal-length extensions ensure balanced stress distribution in the bent structure, making it more stable.
[0026] To protect the exposed end of the intermediate layer, the first extension, the second extension, and the third extension are parallel to each other, and the second bending section is located below the third extension.
[0027] The end of the third extension is the exposed end of the intermediate layer, which is protected by the second bending section.
[0028] To reduce the thickness of the vertical edge, the vertical edge includes: a first epitaxial segment formed by extending a first composite layer, a second epitaxial segment formed by extending a second composite layer, and a third epitaxial segment formed by extending an intermediate composite layer; the first exposed end is disposed on the first epitaxial segment, and the second exposed end is disposed on the second epitaxial segment; the length of the third epitaxial segment is greater than the length of the first epitaxial segment, which is greater than the length of the second epitaxial segment.
[0029] Bending the extension segments of different lengths is used to reduce the thickness of the vertical edge.
[0030] To ensure the stability of the vertical edge, the thickness of the intermediate composite layer is greater than the thickness of the first composite layer and the second composite layer.
[0031] Compared with the prior art, the beneficial effects of this utility model are mainly reflected in the following aspects:
[0032] 1. Avoid liquid corrosion
[0033] The exposed end of the first composite layer is sealed by bending the intermediate composite layer, and the exposed end of the second composite layer is sealed by bending the intermediate composite layer and the first composite layer. The second bending section is lower than the third extension section and the exposed end of the intermediate composite layer, so as to prevent the exposed ends of the first composite layer, the second composite layer and the intermediate composite layer from being corroded by liquid.
[0034] 2. Simple structure
[0035] By cutting the lengths of the first composite layer, the second composite layer, and the intermediate composite layer, the second composite layer is made the shortest, followed by the first composite layer, and the intermediate composite layer is made the longest. This allows the intermediate composite layer to be bent to wrap around the first composite layer, and the intermediate composite layer and the first composite layer to be bent to wrap around the second composite layer. Then, they are bent again to make the vertical edge vertical. No additional protective layer is needed; this can be achieved simply by cutting and bending the composite layers. Attached Figure Description
[0036] Figure 1 This is a perspective view of the assembly of this utility model.
[0037] Figure 2 This is a structural diagram of the present invention.
[0038] Figure 3 This is a structural diagram of the inner pot of this utility model.
[0039] Figure 4 This is a structural diagram of the composite layer of this utility model.
[0040] Figure 5 The vertical side structure of this utility model Figure 1 .
[0041] Figure 6 The vertical side structure of this utility model Figure 2 .
[0042] Figure 7 This is a structural diagram of the first folding structure, the second folding structure, and the third folding structure of this utility model.
[0043] Figure 8 This is a structural diagram of the first folding structure of this utility model.
[0044] Figure 9 This is a structural diagram of the second folding structure of this utility model.
[0045] Figure 10 This is a structural diagram of the third fold structure of this utility model.
[0046] Figure 11This is a structural diagram of the pot body of this utility model.
[0047] Figure label:
[0048] Pot liner 100: Sidewall 110, Vertical edge 120: First composite layer 121: First exposed end 1211, First extension 1212; Second composite layer 122: Second exposed end 1221, Second extension 1222; Intermediate composite layer 123: Third extension 1232, Exposed end 1231 of intermediate composite layer; First folding structure 130: First bending section 131, First extension 132, First folding cavity 133; Second folding structure 140: Second bending section 141, Second extension 142, Second folding cavity 143; Third folding structure 150: Third bending section 151, Third extension 152, Third folding cavity 153;
[0049] Pot body 200: clearance section 210, receiving end 220; top cover 300. Detailed Implementation
[0050] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0051] Example 1
[0052] like Figure 2-4 As shown in Figure 6, this embodiment provides a heating cooking pot, including: a pot body 200, and a pot inner 100 disposed in the pot body. The pot inner 100 has a vertical edge 120 extending outward from the side wall 110 of the pot inner 100 on its open side. The vertical edge 120 is in contact with the outer surface of the side wall 110. The vertical edge 120 is vertically disposed. The vertical edge 120 includes: a first composite layer 121 connected to the food contact surface of the pot inner 100, a second composite layer 122 connected to the heating contact surface of the pot inner 100, and at least one intermediate composite layer 123 disposed between the first composite layer 121 and the second composite layer 122. The vertical edge 120 is folded to form a wrapping of the first exposed end 1211 of the first composite layer 121 and the second exposed end 1221 of the second composite layer 122.
[0053] The vertical edge 120 is formed by extending the side wall 110 outward, which is more aesthetically pleasing than the traditional horizontal edge. The vertical edge 120 is connected to the side wall 110, occupying less external space and making it less likely to collide with other kitchen utensils. Furthermore, by folding and wrapping the first exposed end 1211 of the first composite layer 121 and the second exposed end 1221 of the second composite layer 122, the exposed ends are prevented from contacting external liquids and causing corrosion. It also isolates the air and prevents the first exposed end 1211 and the second exposed end 1221 from being oxidized.
[0054] like Figure 3 and 6 As shown in Figure -10, the vertical side 120 includes:
[0055] The first folding structure 130 is connected to the side wall 110 and forms a first folding cavity 133 with the side wall 110;
[0056] The second folding structure 140 is connected to the first folding structure 130 and forms a second folding cavity 143 with the first folding structure 130 for wrapping the second exposed end 1221.
[0057] The third folding structure 150 is connected to the second folding structure 140 and abuts against the side wall 110. The third folding structure 150 and the second folding structure 140 form a third folding cavity 153 for wrapping the first exposed end 1211.
[0058] The integrally formed first folding structure 130, second folding structure 140, and third folding structure 150 better protect the edges. The width of the first folding structure 130 is larger than the width of the lateral edge, which can disperse the impact force and reduce the damage to the vertical edge 120 when it is hit. The folding cavity formed by the first folding structure 130 and the side wall 110 is used to wrap the second folding structure 140 and the third folding structure 150, protecting them. The second folding cavity 143 formed by the second folding structure 140 wraps the second exposed end 1221 of the second composite layer 122 to prevent it from being corroded by liquid. The third folding cavity 153 formed by the third folding structure 150 wraps the first exposed end 1211 of the first composite layer 121 to prevent it from being corroded by liquid. In addition, the second folding structure 140 is a downwardly curved semi-circle, which can also play a role in collecting liquid. The collected liquid drips outward under the action of gravity, preventing the liquid from seeping in along the gaps between the layers and corroding the metal.
[0059] like Figure 3-4 As shown in Figures 7-10, the second folding cavity 143 is disposed within the first folding cavity 133, and the second folding cavity 143 is connected to the third folding cavity 153.
[0060] The second folding cavity 143 and the third folding cavity 153 are arranged inside the first folding cavity 133, so that the space occupied by the vertical edge 120 is the same as the space occupied by the first folding cavity 133. This structure only requires folding the middle composite layer 123 along the first composite layer 121 to form the third folding structure 150, then folding the third folding structure 150 and the first composite layer 121 along the second composite layer 122 to form the second folding structure 140, and then folding the third folding structure 150, the second folding structure 140 and the second composite layer 122 along the side wall 110 so that the middle composite layer 123 abuts against the side wall 110. This design structure is simple and saves space.
[0061] like Figure 3-4 As shown in Figures 7-8, the first folding cavity 133 includes: a first bending section 131 and a first extension section 132;
[0062] The first bent section 131 and the first extended section 132 are formed by the first composite layer 121, the second composite layer 122 and the intermediate composite layer 123.
[0063] By folding the first composite layer 121, the second composite layer 122 and the intermediate composite layer 123 to form the first bending section 131 and the first extension section 132, protection is formed for the vertical edge 120, and external overall protection is formed with minimal folding.
[0064] like Figure 4 , 7 As shown in Figure 9, the second folding cavity 143 includes: a second bending section 141 and a second extension section 142;
[0065] The second bent section 141 and the second extended section 142 are formed by the first composite layer 121 and the intermediate composite layer 123.
[0066] By bending the first composite layer 121 and the intermediate composite layer 123 to seal and protect the second composite layer 122, the second composite layer 122 can be protected with less and simpler processing, which not only ensures the protection and sealing effect, but also reduces the processing difficulty.
[0067] like Figure 4 , 7 As shown in Figure 10, the third folding cavity 153 includes: a third bending section 151 and a third extension section 152;
[0068] The third bending segment 151 and the third extension segment 152 are formed by the intermediate composite layer 123.
[0069] Since the second folding structure 140 occupies part of the space of the first folding cavity 133, in order to protect the first composite layer 121 in the remaining space, the third bending section 151 and the third extension section 152 are formed by bending the middle composite layer 123 to achieve the sealing and protection of the first composite layer 121.
[0070] like Figure 7-10 As shown, the first folding cavity 133 includes a first bending section 131 and a first extension section 132; the second folding cavity 143 includes a second bending section 141 and a second extension section 142; and the third folding cavity 153 includes a third bending section 151 and a third extension section 152. The lengths of the first extension section 132, the second extension section 142, and the third extension section 152 are equal.
[0071] The equal lengths of the first extension segment 132, the second extension segment 142, and the third extension segment 152 ensure that the bending structure is subjected to uniform stress and the structure is more stable.
[0072] like Figure 3-10 As shown, the first extension segment 132, the second extension segment 142 and the third extension segment 152 are parallel to each other, and the second bending segment 141 is located below the third extension segment 152.
[0073] The first extension segment 132, the second extension segment 142, and the third extension segment 152 extend vertically, reducing the space occupied by the vertical edge 120 in the lateral direction and limiting the thickness of the edge, making it less likely for the vertical edge 120 to collide with the outside world. Furthermore, the second bending segment 141 is located below the third extension segment 152. When a collision occurs, the second bending segment 141 is impacted, and when liquid flows down from the first extension segment 132, it will converge in the second bending segment 141, preventing the liquid from contacting the exposed end 1231 of the intermediate composite layer 123 and corroding the exposed end 1231 of the intermediate composite layer.
[0074] like Figure 3-6 As shown, the vertical edge 120 includes: a first extension segment 1212 formed by extending a first composite layer 121, a second extension segment 1222 formed by extending a second composite layer 122, and a third extension segment 1232 formed by extending an intermediate composite layer 123; the first exposed end 1211 is disposed on the first extension segment 1212, and the second exposed end 1221 is disposed on the second extension segment 1222; the length of the third extension segment 1232 is greater than the length of the first extension segment 1212, which is greater than the length of the second extension segment 1222.
[0075] By cutting the first composite layer 121 and the second composite layer 122, the second composite layer 122 is made the shortest, followed by the first composite layer 121, and the middle composite layer 123 is the longest. This allows composite layers of different lengths to bend together, which can reduce the thickness of the vertical edge 120 while providing protection. This reduces costs while ensuring the protective effect.
[0076] like Figure 3-4 As shown, the thickness of the intermediate composite layer 123 is greater than the thickness of the first composite layer 121 and the second composite layer 122.
[0077] The thickest intermediate layer forms the main clamping, making the formed vertical edge 120 less prone to deformation. It also acts as a barrier when the first composite layer 121 and the second composite layer 122 deform and spring back, which helps to ensure the strength and stability of the bending process.
[0078] Example 2
[0079] like Figure 2-10 As shown, this embodiment is a heating pot 100 of the cooking pot described in Embodiment 1, which is made of a multi-layer composite layer formed by a first composite layer 121, a second composite layer 122 and one or more intermediate composite layers 123. Taking one intermediate layer as an example, the pot 100 is a circular container, and the side wall 110 extends to form a vertical edge 120, which can be used for gripping and fixing.
[0080] The vertical edge 120 is formed by three folds of a first composite layer 121, a second composite layer 122, and an intermediate composite layer 123 of varying lengths. The second composite layer 122 is the shortest, followed by the first composite layer 121, and the intermediate composite layer 123 is the longest. First, the intermediate composite layer 123 is bent along the first composite layer 121 to form a third fold structure 150. The third fold cavity 153 formed by the intermediate composite layer 123 encloses the first exposed end 1211 of the first composite layer 121. Then, the first composite layer... 121. The intermediate composite layer 123, together with the third fold structure 150, forms a second fold structure 140 along the second composite layer 122. The second fold cavity 143, formed by the third fold structure 150, the first composite layer 121, and the intermediate composite layer 123, encloses the second exposed end 1221 of the second composite layer 122. At this time, the vertical edge 120 is horizontal. The horizontal vertical edge 120 is bent towards the side wall 110, so that the third bent structure is tightly attached to the side wall 110, forming a vertical vertical edge 120. The vertical vertical edge 120 can effectively disperse pressure when subjected to impact, thus protecting the vertical edge 120. In addition, the vertical vertical edge 120 can also guide the liquid on the vertical edge 120 to drip downwards along the direction of the vertical edge 120, preventing the exposed end from being corroded by the liquid. By setting the lengths of the first composite layer 121, the second composite layer 122, and the intermediate composite layer 123, the second exposed end 1221 of the second composite layer 122 can be bent and wrapped by the second composite layer 122 and the intermediate composite layer 123, and the first exposed end 1211 of the first composite layer 121 can be bent and wrapped by the intermediate composite layer 123. While ensuring the sealing and protection effect, the thickness of the vertical edge 120 is also reduced.
[0081] The first bending structure includes a first bending section 131 and a first extension section 132; the second bending structure includes a second bending section 141 and a second extension section 142; and the third bending structure includes a third bending section 151 and a third extension section 152. The first bending section 131 is connected to the sidewall 110, forming a transition between the vertical edge 120 and the sidewall 110. The first bending section 131 and the first extension section 132 also serve to protect the second bending structure 140 and the third bending structure 150. The second bending section 141 is connected to the first extension section 132 and located below it, serving to collect liquid, allowing the liquid to collect and drip under gravity, preventing the liquid from flowing into the gaps between the metal layers and corroding the metal. The third bending section 151 and the third extension section 152 are closely attached to the side wall 110, and the end of the third extension section 152 and the exposed end of the intermediate composite layer 123 are located above the second bending section 141. This design allows the second bending section 141 to protect the exposed end of the intermediate composite layer 123 from direct impact when the lower part of the vertical edge 120 is subjected to an upward impact. In addition, the lengths of the first extension section 132, the second extension section 142 and the third extension section 152 are equal, so that the extension section bears a balanced force on the corresponding bending section, which is not easy to deform and the structure is more stable.
[0082] Example 3
[0083] like Figure 1-3 As shown in Figures 7-9 and 11, this embodiment provides a heating and cooking pot, including a pot body 200 for holding the inner pot 200 of the heating and cooking pot described in Embodiments 1 and 2, and a top cover 300 for sealing the pot body 200. A recessed clearance structure 210 is formed at a position corresponding to the vertical edge 120 of the inner pot 100, for holding and fixing the inner pot. The clearance structure includes a clearance section 210 and a receiving end 220. The length of the clearance end 210 is the sum of the radius of the first bending section 131, the radius of the first extension section 132, and the radius of the second bending section 141. The receiving end 220 is a combination of an arc surface and a plane. The width of the arc surface is the radius of the second bending section 141. The arc surface portion matches the portion of the second bending section 141 that connects to the first extension section 132. The arc surface portion starts from the second bending section 141 and ends at the lowest point of the second bending section 141, while the plane extends to the side wall 110 of the inner pot 100.
[0084] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A heating cooker comprising: The pot body, and the inner pot provided inside the pot body, wherein the opening side of the inner pot is provided with a vertical edge extending from the side wall of the inner pot. The vertical edge is in contact with the outer surface of the sidewall; the vertical edge is vertically arranged; characterized in that the vertical edge includes: a first composite layer connected to the food contact surface of the pot, a second composite layer connected to the heating contact surface of the pot, and at least one intermediate composite layer disposed between the first composite layer and the second composite layer, the vertical edge being folded to form a wrapping of the first exposed end of the first composite layer and the second exposed end of the second composite layer.
2. A heating cooker according to claim 1, wherein The vertical side includes: The first folding structure is connected to the side wall and forms a first folding cavity with the side wall; The second folding structure is connected to the first folding structure and forms a second folding cavity with the first folding structure for wrapping the second exposed end; The third folding structure is connected to the second folding structure and abuts against the sidewall. The third folding structure and the second folding structure form a third folding cavity for wrapping the first exposed end.
3. A heating boiler according to claim 2, characterized in that The second folded cavity is located inside the first folded cavity, and the second folded cavity is connected to the third folded cavity.
4. A heating cooker according to claim 2, wherein The first folded cavity includes: a first bent section and a first extended section; The first bent section and the first extended section are formed by the first composite layer, the second composite layer and the intermediate composite layer.
5. A heating cooker according to claim 2, wherein The second folded cavity includes: a second bent section and a second extended section; The second bending segment and the second extension segment are formed by the first composite layer and the intermediate composite layer.
6. A heating cooker according to claim 2, wherein The third folding cavity includes: a third bending section and a third extension section; The third bending section and the third extension section are formed by the intermediate composite layer.
7. A heating cooker according to claim 2, wherein The first folding cavity includes a first bending section and a first extension section; the second folding cavity includes a second bending section and a second extension section; and the third folding cavity includes a third bending section and a third extension section; the lengths of the first extension section, the second extension section, and the third extension section are equal.
8. A heating boiler according to claim 7, characterized in that The first extension segment, the second extension segment, and the third extension segment are parallel to each other, and the second bending segment is located below the third extension segment.
9. A cooking pot according to any one of claims 1-8, characterized in that The vertical edge includes: a first epitaxial segment formed by extending a first composite layer, a second epitaxial segment formed by extending a second composite layer, and a third epitaxial segment formed by extending an intermediate composite layer; the first exposed end is disposed on the first epitaxial segment, and the second exposed end is disposed on the second epitaxial segment; the length of the third epitaxial segment is greater than the length of the first epitaxial segment, which is greater than the length of the second epitaxial segment.
10. A cooking pot according to any one of claims 1 to 8, wherein The thickness of the intermediate composite layer is greater than the thickness of the first composite layer and the second composite layer.