Ceramic pots and electric saucepans

Abstract

The utility model relates to a kind of pottery and electric stew pot, pottery has side wall and bottom wall, side wall and bottom wall form cooking cavity, bottom wall is equipped with avoidance and heat conduction part, heat conduction part is located in the periphery of avoidance, and avoidance is recessed from heat conduction part towards cooking cavity, the outer diameter D3 of heat conduction part and the outer diameter D4 of avoidance satisfy:1.3≤D3 / D4≤1.7.Prevent the area of heat conduction part from being too small to cause the contact area between it and the disc surface of heating disc to be insufficient, and heat conduction efficiency is not good;At the same time, prevent the area of heat conduction part from being too large to cause its flatness to be low, and the thickness H3 of avoidance is less than the thickness H4 of heat conduction part, when firing pottery, the shrinkage of bottom wall will preferentially concentrate in the avoidance of relatively thin thickness, so that the influence on the flatness of heat conduction part can also be reduced, ensure that heat conduction part and the disc surface of heating disc are closely combined, improve heat conduction efficiency and heat conduction effect, avoid heat conduction part local overheating and the overall temperature difference is relatively large to cause cracking.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a ceramic pot and an electric slow cooker. Background Technology

[0002] The inner pot of a stew pot is generally made of earthenware. Earthenware is typically porous and has poor impact resistance. Furthermore, to improve heating efficiency, the bottom of existing earthenware pots is in direct contact with the heating plate. However, due to limitations in the material and manufacturing process, the bottom of the earthenware pot shrinks and concaves after firing, resulting in poor flatness. This means the bottom of the earthenware pot can only form line or point contact with the heating plate, leading to poor contact, low heat conduction efficiency, and a tendency for localized overheating and large overall temperature differences, causing cracking. Utility Model Content

[0003] Therefore, it is necessary to provide a ceramic pot and an electric slow cooker to address the above problems, so as to reduce the risk of cracking while ensuring the heat conduction efficiency of the ceramic pot.

[0004] This utility model first provides a ceramic pot, which has a side wall and a bottom wall, the side wall and the bottom wall forming a cooking cavity. The bottom wall is provided with a relief part and a heat-conducting part. The heat-conducting part is located on the periphery of the relief part, and the relief part is recessed from the heat-conducting part toward the cooking cavity. The outer diameter D3 of the heat-conducting part and the outer diameter D4 of the relief part satisfy: 1.3≤D3 / D4≤1.7.

[0005] In the aforementioned ceramic pot, the heat-conducting part is used to contact the surface of the heating plate and transfer heat to the entire pot. The avoidance part is recessed from the heat-conducting part toward the cooking cavity, so that the avoidance part does not contact the surface of the heating plate, thereby reducing the thermal shock to the avoidance part when the heating plate heats up and reducing the risk of cracking of the avoidance part. D3 / D4≥1.3 can prevent the area of ​​the heat-conducting part from being too small, resulting in insufficient contact area between it and the surface of the heating plate and poor heat conduction efficiency. At the same time, D3 / D4≤1.7 can prevent the area of ​​the heat-conducting part from being too large, resulting in low flatness. Furthermore, the thickness H3 of the avoidance part is less than the thickness H4 of the heat-conducting part. During the firing of the ceramic pot, the shrinkage of the bottom wall will preferentially concentrate on the thinner avoidance part, thereby reducing the impact on the flatness of the heat-conducting part. This ensures that the heat-conducting part and the surface of the heating plate are in close contact, improving heat conduction efficiency and effect, and avoiding local overheating of the heat-conducting part and large overall temperature difference that could cause cracking.

[0006] In one embodiment, the plane where the clearance part is located has a height difference H1 with the plane where the heat-conducting part is located, and satisfies: 2mm≤H1≤6mm.

[0007] This design prevents the distance between the clearance part and the heating plate from being too small, which would cause a large thermal shock to the clearance part when the heating plate is heating; at the same time, it prevents the clearance part from being too far concave towards the cooking cavity, which would result in the clearance part being too thin and thus having low strength and being prone to cracking.

[0008] In one embodiment, a transition section is provided between the avoidance part and the heat conduction part, and the transition section has an angle α with the horizontal plane, satisfying 45°≤α<90°.

[0009] This design reduces the stretching effect of the relief section on the heat-conducting section during the firing shrinkage process, reduces the risk of deformation of the heat-conducting section, and ensures the flatness of the heat-conducting section.

[0010] In one embodiment, the bottom wall is further provided with a reinforcing portion, which protrudes from the periphery of the heat-conducting portion.

[0011] This design allows the reinforcing section to improve the overall strength of the bottom wall and reduce the risk of cracking; furthermore, the pottery pot is supported on the external plane through the reinforcing section.

[0012] In one embodiment, the reinforcing portion is in the form of a continuous ring.

[0013] This design ensures consistent circumferential strength of the bottom wall, eliminating weak points and reducing the risk of cracking due to external impact or thermal shock. It also reduces the stretching effect on the heat-conducting parts during the firing shrinkage of the bottom wall.

[0014] In one embodiment, the reinforcing portion is located at the edge of the bottom wall.

[0015] This design improves the stability of the ceramic pot when it is supported on an external plane by the reinforcing part, and also increases the strength of the connection between the bottom wall and the side wall, preventing cracking at the connection.

[0016] In one embodiment, the width W of the reinforcing part satisfies: 5mm ≤ W ≤ 15mm.

[0017] This design prevents the width W of the reinforcing part from being too small, which would reduce the stability of the ceramic pot when it is supported on the external plane by the reinforcing part, and also avoids the bottom wall from being too weak and prone to cracking; at the same time, it prevents the width W of the reinforcing part from being too large, which would cause the reinforcing part to stick to the sintering table during the production and processing process.

[0018] In one embodiment, the plane where the reinforcing part is located has a height difference H2 with the plane where the heat-conducting part is located, wherein H2 satisfies 2mm≤H2≤6mm.

[0019] This design ensures the strength of the bottom wall and guarantees that only the heat-conducting part can contact the surface of the heating plate; at the same time, it prevents excessive H2 from causing the overall thickness of the ceramic pot to be too large.

[0020] This utility model also provides an electric slow cooker, including: a pot body; a heat-conducting component disposed on the pot body; and a ceramic pot as described above, wherein the heat-conducting part can be attached to the heat-conducting component.

[0021] In one embodiment, the heat-conducting component includes a heat-conducting disk and a heating tube located within the heat-conducting disk, the heat-conducting part being able to abut against the heat-conducting disk, and the projection of the heating tube on the upper surface of the heat-conducting disk being located within the projection of the clearance part on the upper surface of the heat-conducting disk.

[0022] This design reduces the thermal shock of the heating element to the heat-conducting part, thus lowering the risk of cracking in the heat-conducting part.

[0023] In one embodiment, the bottom wall is further provided with a reinforcing portion, which protrudes from the periphery of the heat-conducting portion, and the inner diameter D1 of the reinforcing portion is larger than the outer diameter D2 of the heat-conducting plate.

[0024] This configuration ensures that only the heat-conducting part can contact the upper surface of the heat-conducting plate. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional structural diagram of a ceramic pot according to one embodiment of the present invention.

[0027] Figure 2 for Figure 1 A cross-sectional view of the earthenware pot;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This is an exploded view of an electric slow cooker according to one embodiment of the present invention;

[0030] Figure 5 for Figure 4 A cross-sectional view of an electric slow cooker.

[0031] Reference numerals: 10, pot body; 20, heat-conducting component; 21, heat-conducting plate; 22, heating element; 30, ceramic pot; 31, side wall; 32, bottom wall; 321, clearance section; 322, heat-conducting section; 323, reinforcing section; 324, transition section; 33, cooking cavity; 40, lid. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0037] The inner pot of a stew pot is generally made of earthenware. Earthenware is typically porous and has poor impact resistance. Furthermore, to improve heating efficiency, the bottom of existing earthenware pots is in direct contact with the heating plate. However, due to limitations in the material and manufacturing process, the bottom of the earthenware pot shrinks and concaves after firing, resulting in poor flatness. This means the bottom of the earthenware pot can only form line or point contact with the heating plate, leading to poor contact, low heat conduction efficiency, and a tendency for localized overheating and large overall temperature differences, causing cracking.

[0038] To solve the above problems, such as Figures 1 to 5 As shown, this utility model provides a ceramic pot and an electric slow cooker to reduce the risk of cracking while ensuring the heat conduction efficiency of the ceramic pot.

[0039] like Figures 1 to 3 As shown, specifically, the ceramic pot 30 has a side wall 31 and a bottom wall 32, which together form a cooking cavity 33. The bottom wall 32 has a clearance portion 321 and a heat-conducting portion 322. The heat-conducting portion 322 is located around the clearance portion 321, and the clearance portion 321 is recessed from the heat-conducting portion 322 toward the cooking cavity 33. The outer diameter D3 of the heat-conducting portion 322 and the outer diameter D4 of the clearance portion 321 satisfy: 1.3 ≤ D3 / D4 ≤ 1.67. The ratio of D3 to D4 can be any value within the range of 1.3 to 1.7, such as 1.3, 1.4, 1.5, 1.6, or 1.7.

[0040] In the ceramic pot 30 provided in this embodiment of the invention, the heat-conducting part 322 is used to contact the surface of the heating plate and transfer heat to the entire ceramic pot 30. The avoidance part 321 is recessed from the heat-conducting part 322 toward the cooking cavity 33, so that the avoidance part 321 does not contact the surface of the heating plate, thereby reducing the thermal shock to the avoidance part 321 when the heating plate is heated and reducing the risk of cracking of the avoidance part 321; D3 / D4≥1.3 can prevent the area of ​​the heat-conducting part 322 from being too small, resulting in insufficient contact area between it and the surface of the heating plate and poor heat conduction efficiency; at the same time, D3 / D4≤1.7 This design prevents the heat-conducting part 322 from having an excessively large area, which could lead to low flatness due to firing shrinkage. Furthermore, since the inner surface of the bottom wall 32 is typically a continuous plane, the thickness H3 of the clearance part 321 is less than the thickness H4 of the heat-conducting part 322. During the firing of the ceramic pot 30, the shrinkage of the bottom wall 32 will preferentially concentrate on the thinner clearance part 321, thereby reducing the impact on the flatness of the heat-conducting part 322. This ensures that the heat-conducting part 322 is in close contact with the surface of the heating plate, improving heat conduction efficiency and effect, and preventing local overheating of the heat-conducting part 322 and large overall temperature difference that could cause cracking.

[0041] like Figure 3 As shown, in one embodiment, the plane where the clearance part 321 is located and the plane where the heat-conducting part 322 is located have a height difference H1, and satisfy: 2mm ≤ H1 ≤ 6mm. It should be noted that the plane where the clearance part 321 is located refers to the side of the clearance part 321 facing away from the cooking cavity 33, and the plane where the heat-conducting part 322 is located refers to the side of the heat-conducting part 322 facing away from the cooking cavity 33 and used to contact the surface of the heating plate. H1 can be any value within the range of 2mm to 6mm, such as 2mm, 3mm, 4mm, 5mm, or 6mm. H1 ≥ 2mm prevents the distance between the clearance part 321 and the surface of the heating plate from being too small, which would cause a large thermal shock to the clearance part 321 when the heating plate is heating. Simultaneously, H1 ≤ 6mm prevents the distance of the clearance part 321 recessed towards the cooking cavity 33 from being too large, which would result in an insufficient thickness H3 of the clearance part 321, leading to low strength and easy cracking. Of course, in other embodiments, H1 can also be set to less than 2mm or greater than 6mm depending on factors such as the size of the ceramic pot 30 and processing requirements. This embodiment of the present invention does not impose specific limitations here.

[0042] like Figure 3As shown, in one embodiment, a transition section 324 is provided between the clearance portion 321 and the heat-conducting portion 322. The transition section 324 has an angle α with the horizontal plane, satisfying 45°≤α<90°. Here, α can be any angle within the range of 45° or greater than or equal to 45° and less than 90°, such as 45°, 50°, 60°, 70°, or 80°. That is, the draft angle of the transition section 324 satisfies greater than 0° and less than or equal to 45°. This reduces the stretching effect of the clearance portion 321 on the heat-conducting portion 322 during firing shrinkage, reduces the risk of deformation of the heat-conducting portion 322, ensures the flatness of the heat-conducting portion 322, and allows the heat-conducting portion 322 to maintain a tighter fit with the surface of the heating plate, further improving heat conduction efficiency and effect. Of course, in other embodiments, α can also be set to less than 45° depending on the size of the ceramic pot 30 and processing requirements; this embodiment of the present invention does not impose specific limitations.

[0043] like Figures 1 to 3 As shown, the bottom wall 32 is also provided with a reinforcing part 323, which protrudes from the periphery of the heat-conducting part 322. The reinforcing part 323 can improve the overall strength of the bottom wall 32 and reduce the risk of cracking. In addition, the reinforcing part 323 can serve as a support, allowing the ceramic pot 30 to be supported on external surfaces such as work surfaces and sintering surfaces via the reinforcing part 323.

[0044] like Figure 1 As shown, in one embodiment, the reinforcing portion 323 is a continuous ring. This ring-shaped reinforcing portion 323 ensures consistent circumferential strength of the bottom wall 32, eliminating weak points and reducing the risk of cracking due to external impact or thermal shock. It also reduces the tensile impact on the heat-conducting portion 322 during the shrinkage process of the bottom wall 32 during firing. In other embodiments, the reinforcing portion 323 can also be a multi-segment arc-shaped structure, with the segments spaced apart circumferentially along the bottom wall 32; or, the reinforcing portion 323 can be a ring-shaped structure with multiple openings. The gaps between the multi-segment arc-shaped structures and the openings on the ring-shaped structure can be used for heat dissipation.

[0045] like Figures 1 to 2 As shown, in one embodiment, the reinforcing part 323 is provided at the edge of the bottom wall 32. This improves the stability of the ceramic pot 30 when it is supported on an external plane such as an operating table or sintering table via the reinforcing part 323, and also increases the strength of the connection between the bottom wall 32 and the side wall 31, preventing cracking at the connection. Of course, in other embodiments, a connecting part can be provided around the reinforcing part 323, with both ends of the connecting part connected to the side wall 31 and the reinforcing part 323, respectively.

[0046] like Figure 3As shown, in one embodiment, the width W of the reinforcing part 323 satisfies: 5mm ≤ W ≤ 15mm. Wherein, W can be any value within the range of 5mm to 15mm, such as 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, etc. W ≥ 5mm prevents the width W of the reinforcing part 323 from being too small, which would reduce the stability of the ceramic pot 30 when it is supported on an external plane such as an operating table or sintering table via the reinforcing part 323, and also prevents the bottom wall 32 from being too weak and prone to cracking. Simultaneously, W ≤ 15mm prevents the width W of the reinforcing part 323 from being too large, which would cause the reinforcing part 323 to easily stick to the sintering table when the ceramic pot 30 is supported by the reinforcing part 323 during production and processing. Of course, in other embodiments, W can also be set to less than 5mm or greater than 15mm depending on the size of the ceramic pot 30 and processing requirements; this embodiment of the present invention does not impose specific limitations.

[0047] like Figure 3 As shown, in one embodiment, the plane containing the reinforcing part 323 and the plane containing the heat-conducting part 322 have a height difference H2, where H2 satisfies 2mm ≤ H2 ≤ 6mm. It should be noted that the plane containing the reinforcing part 323 refers to the side of the reinforcing part 323 that faces away from the cooking cavity 33 and is used to support the work surface, sintering surface, or other external planes. H2 can be any value within the range of 2mm to 6mm, such as 2mm, 3mm, 4mm, 5mm, or 6mm. H2 ≥ 2mm ensures the strength of the bottom wall 32 and prevents the reinforcing part 323 from easily contacting the surface of the heating plate if H2 is too small. This ensures that only the heat-conducting part 322 can contact the surface of the heating plate, avoiding thermal shock from the heating plate to the reinforcing part 323. It also prevents the heat-conducting part 322 from easily contacting and sticking to the sintering table surface when the ceramic pot 30 is supported by the reinforcing part 323 during production. At the same time, H2 ≤ 6mm prevents the overall thickness of the ceramic pot 30 from being too large. Of course, in other embodiments, H2 can also be set to less than 2mm or greater than 6mm depending on the size of the ceramic pot 30 and processing requirements. This embodiment of the present invention does not impose specific limitations here.

[0048] Furthermore, a transition section 324 may be provided between the heat-conducting part 322 and the reinforcing part 323 to reduce the stretching effect of the heat-conducting part 322 on the bottom wall 32 during the firing shrinkage process.

[0049] like Figures 4 to 5As shown, this embodiment of the invention also provides an electric slow cooker, including a pot body 10, a heat-conducting component 20, and the aforementioned ceramic pot 30. The heat-conducting component 20 is disposed on the pot body 10, and the heat-conducting part 322 can abut against the heat-conducting component 20. The heat-conducting part 322 of the ceramic pot 30 contacts the heat-conducting component 20 and transfers heat to the entire ceramic pot 30. The avoidance part 321 and the reinforcing part 323 do not contact the heat-conducting component 20. Furthermore, the electric slow cooker also includes a lid 40 for covering the pot body 10.

[0050] like Figure 5 As shown, in one embodiment, the heat-conducting component 20 includes a heat-conducting plate 21 and a heating tube 22 located within the heat-conducting plate 21. The heat-conducting part 322 can abut against the heat-conducting plate 21, and the projection of the heating tube 22 on the upper surface of the heat-conducting plate 21 is located within the projection of the avoidance part 321 on the upper surface of the heat-conducting plate 21. That is, when the heating tube 22 is an annular tube, the inner diameter D5 of the heat-conducting part 322 is larger than the outer diameter D6 of the heating tube 22. Since the heating tube 22 is a heat source, the temperature at its projection on the upper surface of the heat-conducting plate 21 is much higher than other locations on the upper surface of the heat-conducting plate 21. Therefore, the heat-conducting part 322 is configured not to contact the projection of the heating tube 22 on the upper surface of the heat-conducting plate 21 to reduce the thermal shock of the heating tube 22 to the heat-conducting part 322 and reduce the risk of cracking of the heat-conducting part 322. Of course, in other embodiments, the heat-conducting component 20 can also use thick film heating, PTC heating, or other heating elements. This embodiment of the present invention does not impose specific limitations here.

[0051] like Figure 5 As shown, the inner diameter D1 of the reinforcing part 323 is larger than the outer diameter D2 of the heat-conducting plate 21. This further ensures that only the heat-conducting part 322 can contact the upper surface of the heat-conducting plate 21, thus avoiding thermal shock from the heat-conducting plate 21 to the reinforcing part 323.

[0052] Of course, the ceramic pot 30 can also be used in other cooking appliances such as electric cookers and electric hot pots that can use a heating plate to heat the ceramic pot 30.

[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A ceramic pot, characterized in that, The ceramic pot has a side wall (31) and a bottom wall (32), which together form a cooking cavity (33). The bottom wall (32) has a clearance part (321) and a heat-conducting part (322). The heat-conducting part (322) is located around the clearance part (321), and the clearance part (321) is recessed from the heat-conducting part (322) toward the cooking cavity (33). The outer diameter D3 of the heat-conducting part (322) and the outer diameter D4 of the clearance part (321) satisfy: 1.3≤D3 / D4≤1.

7.

2. The earthenware pot according to claim 1, characterized in that, The plane where the avoidance part (321) is located has a height difference H1 with the plane where the heat conduction part (322) is located, and satisfies: 2mm≤H1≤6mm.

3. The earthenware pot according to claim 1, characterized in that, A transition section (324) is provided between the avoidance part (321) and the heat conduction part (322), and the transition section (324) has an angle α with the horizontal plane, which satisfies 45°≤α<90°.

4. The earthenware pot according to claim 1, characterized in that, The bottom wall (32) is also provided with a reinforcing part (323), which protrudes from the periphery of the heat-conducting part (322).

5. The earthenware pot according to claim 4, characterized in that, The reinforcing part (323) is in the form of a continuous ring.

6. The earthenware pot according to claim 5, characterized in that, The reinforcing part (323) is located at the edge of the bottom wall (32).

7. The earthenware pot according to claim 5, characterized in that, The width W of the reinforcing part (323) satisfies: 5mm≤W≤15mm.

8. The earthenware pot according to claim 4, characterized in that, The plane where the reinforcing part (323) is located has a height difference H2 with the plane where the heat-conducting part (322) is located, and H2 satisfies 2mm≤H2≤6mm.

9. An electric slow cooker, characterized in that, include: Clay pot (10); A heat-conducting component (20) is disposed on the pot body (10); and The ceramic pot as described in any one of claims 1-8, wherein the heat-conducting part (322) is capable of abutting against the heat-conducting component (20).

10. The electric slow cooker according to claim 9, characterized in that, The heat-conducting component (20) includes a heat-conducting plate (21) and a heating tube (22) located inside the heat-conducting plate (21). The heat-conducting part (322) can abut against the heat-conducting plate (21). The projection of the heating tube (22) on the upper surface of the heat-conducting plate (21) is located in the projection of the clearance part (321) on the upper surface of the heat-conducting plate (21).

11. The electric slow cooker according to claim 10, characterized in that, The bottom wall (32) is also provided with a reinforcing part (323), which protrudes from the periphery of the heat-conducting part (322). The inner diameter D1 of the reinforcing part (323) is greater than the outer diameter D2 of the heat-conducting plate (21).

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