Cooking utensil

Abstract

The utility model belongs to the field of cooking utensils, and particularly provides a cooking utensil. An existing cooking utensil has the problem that a sealing ring is difficult to maintain stable sealing under different pressure environments. Therefore, the utility model provides the cooking utensil which comprises a machine body, a cover body and a sealing ring, wherein a cooking cavity is defined in the machine body and used for containing food; the cover body is rotationally connected with the machine body so as to open or close the cooking cavity; the sealing ring is installed on the cover body and used for abutting against the machine body in a sealed mode, and the cross section of the contact portion of the sealing ring and the machine body is in a shape like a Chinese character'shi ', so that the sealing ring can seal the high-pressure cooking cavity and can also seal the low-pressure cooking cavity. According to the utility model, the technical problems are solved.

Description

Cooking utensils Technical Field

[0001] This utility model belongs to the field of kitchenware, and specifically provides a cooking utensil. Background Technology

[0002] In the field of modern cooking appliances, with the diversification of cooking functions and the widespread adoption of technologies such as pressure cooking and sous-vide cooking, cooking appliances have placed higher demands on their sealing performance. Currently, common cooking appliances on the market, such as rice cookers, pressure cookers, and vacuum cookers, typically use conventional sealing rings to achieve a seal between the lid and the body. The contact area between these sealing rings and the body is mostly rectangular or circular, which can achieve a certain degree of sealing under a single pressure environment.

[0003] However, when the cooking process involves different pressure environments such as high pressure and low pressure, the sealing ring is difficult to maintain a stable seal, and air can easily enter the cooking cavity, causing the food to fail to achieve the desired cooking effect. Summary of the Invention

[0004] One objective of this invention is to solve the problem that the sealing ring of cooking utensils is difficult to maintain a stable seal under different pressure environments such as high pressure and low pressure.

[0005] To achieve the above objectives, this utility model provides a cooking utensil, comprising:

[0006] The main body is limited to a cooking chamber for holding food;

[0007] The lid is rotatably connected to the body to open or close the cooking cavity;

[0008] A sealing ring is installed on the cover to seal against the body. The cross-section of the part of the sealing ring that contacts the body is U-shaped so that the sealing ring can seal both the high-pressure cooking chamber and the low-pressure cooking chamber.

[0009] Optionally, the sealing ring has an outer sealing ring portion extending obliquely away from the center of the cooking cavity, and an inner sealing ring portion extending obliquely from the outer sealing ring portion toward the center of the cooking cavity. The outer sealing ring portion and the inner sealing ring portion constitute the inverted V-shaped structure, and the outer sealing ring portion and the inner sealing ring portion respectively contact and seal with the body.

[0010] Optionally, the side of the outer sealing ring away from the center of the cooking cavity is connected to the external environment, so that when the cooking cavity is in a low-pressure environment, the outside air presses the outer sealing ring against the body of the machine.

[0011] The inner sealing ring is connected to the cooking cavity on the side facing the center of the cooking cavity, so that when the cooking cavity is under high pressure, the high-pressure air in the cooking cavity presses the inner sealing ring against the machine body.

[0012] Optionally, the thickness of the outer sealing ring portion is greater than the thickness of the inner sealing ring portion.

[0013] Optionally, the thickness of the outer sealing ring is selected from any value between 0.5 mm and 1.5 mm; and / or

[0014] The thickness of the inner sealing ring is selected from any value between 0.35 mm and 1.1 mm; and / or

[0015] An annular reinforcing rib is provided at the end of the inner sealing ring that is away from the outer sealing ring.

[0016] Optionally, the angle between the outer sealing ring and the inner sealing ring is selected from any value between 100° and 160°.

[0017] Optionally, the sealing ring includes a liquid-collecting ring portion connected to the side of the outer sealing ring portion near the center of the cooking cavity, and connected to the end of the outer sealing ring portion away from the body.

[0018] Optionally, the liquid-coating ring is a downwardly convex ring, and the surface of the convex ring facing the machine body is smooth.

[0019] Optionally, the cover includes an inner cover support, the lower end face of which contacts the sealing ring to provide downward pressure on the sealing ring, and an annular groove is provided on the other side of the sealing ring opposite to the convex ring so that the lower end face of the inner cover support and the sealing ring form a two-point contact.

[0020] Optionally, the cooking appliance is a rice cooker or a pressure cooker.

[0021] Based on the foregoing description, those skilled in the art will understand that in the aforementioned technical solution of this utility model, by setting the cross-section of the contact part between the sealing ring and the body to an "I" shape, the sealing ring can seal both the high-pressure cooking chamber and the low-pressure cooking chamber.

[0022] Furthermore, by setting an outer sealing ring portion that extends obliquely away from the center of the cooking cavity and an inner sealing ring portion that extends obliquely from the outer sealing ring portion toward the center of the cooking cavity on the sealing ring, and making the outer sealing ring portion and the inner sealing ring portion form an I-shaped structure, the outer sealing ring portion and the inner sealing ring portion respectively contact and seal with the body, thereby forming a two-layer sealing structure between the cover and the body, improving the sealing effect.

[0023] Furthermore, by connecting the side of the outer sealing ring away from the center of the cooking cavity to the external environment, the cooking cavity is in a low-pressure environment where the outside air presses the outer sealing ring against the machine body; and by connecting the side of the inner sealing ring facing the center of the cooking cavity to the cooking cavity, the cooking cavity is in a high-pressure environment where the high-pressure air in the cooking cavity presses the inner sealing ring against the machine body.

[0024] Furthermore, by selecting the thickness of the outer sealing ring from 0.5mm to 1.5mm (further selected from 0.7mm to 1.3mm), the cost and weight of the sealing ring can be reasonably controlled according to actual needs while ensuring sealing performance, and at the same time, the outer sealing ring has sufficient strength to withstand external air pressure, thus achieving reliable low-pressure sealing.

[0025] Furthermore, by selecting the thickness of the inner sealing ring from 0.35mm to 1.1mm (further selected from 0.6mm to 1mm), the inner sealing ring can be flexibly deformed to better fit the machine body while meeting the high-pressure sealing requirements, thereby improving the tightness of the seal and helping to control the overall performance and cost of the sealing ring.

[0026] Furthermore, an annular reinforcing rib is provided at the end of the inner sealing ring that is away from the outer sealing ring. This enhances the strength and stability of the inner sealing ring, preventing it from deforming or being damaged excessively under high pressure. This ensures that the inner sealing ring can maintain continuous and effective sealing contact with the machine body, improving the service life and sealing reliability of the sealing ring.

[0027] Furthermore, by selecting an angle between the outer sealing ring and the inner sealing ring from 100° to 160° (further selected from 120° to 150°), this angle design allows the sealing ring to better adapt to the shape of the machine body. During the sealing process, the outer sealing ring and the inner sealing ring can contact the machine body more evenly, improving the uniformity and stability of the seal, thereby enhancing the sealing effect.

[0028] Furthermore, by setting a liquid-collecting ring on the sealing ring, the condensate on the lower surface of the cover is guided to drip more quickly into the cooking cavity.

[0029] Other beneficial effects of this utility model will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand the improvement purpose, features and advantages of this utility model. Attached Figure Description

[0030] To more clearly illustrate the technical solution of this utility model, some embodiments of this utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that the same reference numerals may indicate the same or similar components or parts in different drawings; the drawings of this utility model are not necessarily drawn to scale. In the drawings:

[0031] Figure 1 is an isometric view of a cooking appliance according to some embodiments of the present invention;

[0032] Figure 2 is an exploded view of the cooking utensils in Figure 1;

[0033] Figure 3 is a partial sectional view of the cooking utensil in Figure 1;

[0034] Figure 4 is a magnified view of region A in Figure 3.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100. Cooking appliance; 110. Body; 111. Cooking cavity; 120. Lid; 121. Inner cover support; 122. Inner cover; 123. Pressure relief valve; 130. Sealing ring; 131. Outer sealing ring; 132. Inner sealing ring; 133. Annular reinforcing rib; 134. Liquid collection ring; 135. Protruding ring; 136. Annular groove. Detailed Implementation

[0037] Those skilled in the art should understand that the embodiments described below are merely some embodiments of the present invention, and not all embodiments of the present invention. These embodiments are intended to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those skilled in the art without creative effort should still fall within the scope of protection of the present invention.

[0038] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. For example, unless otherwise specified, the terms "installation," "connection," "joining," and "fixing" can specifically refer to any feasible connection form such as bolt connection, screw connection, welding, insertion, riveting, fusion welding, or snap-fit.

[0040] As shown in Figures 1 and 2, in some embodiments of this utility model, the cooking appliance 100 may include a body 110, a lid 120, and a sealing ring 130. The body 110 defines a cooking cavity 111 for holding food. The lid 120 is rotatably connected to the body 110 to open or close the cooking cavity 111. The sealing ring 130 is mounted on the lid 120 to seal against the body 110. The cross-section of the contact portion between the sealing ring 130 and the body 110 is U-shaped, so that the sealing ring 130 can seal both high-pressure and low-pressure cooking cavities 111.

[0041] As shown in Figures 3 and 4, in some embodiments of this utility model, the sealing ring 130 has an outer sealing ring portion 131 that extends obliquely away from the center of the cooking cavity 111, and an inner sealing ring portion 132 that extends obliquely from the outer sealing ring portion 131 toward the center of the cooking cavity 111. The outer sealing ring portion 131 and the inner sealing ring portion 132 form an I-shaped structure, and the outer sealing ring portion 131 and the inner sealing ring portion 132 respectively contact and seal with the body 110.

[0042] The outer sealing ring 131 and the inner sealing ring 132 form a two-layer sealing structure between the cover 120 and the body 110. Compared with a single-layer seal, the two-layer seal can significantly improve the sealing effect.

[0043] Referring again to Figure 4, in some embodiments of this utility model, the side of the outer sealing ring 131 facing away from the center of the cooking cavity 111 is connected to the external environment, so that when the cooking cavity 111 is in a low-pressure environment, the outside air presses the outer sealing ring 131 onto the body 110; the side of the inner sealing ring 132 facing the center of the cooking cavity 111 is connected to the cooking cavity 111, so that when the cooking cavity 111 is in a high-pressure environment, the high-pressure air in the cooking cavity 111 presses the inner sealing ring 132 onto the body 110.

[0044] Those skilled in the art will understand that, under low pressure, the pressure of the outside air is used to press the outer sealing ring 131 onto the body 110, which enhances the sealing effect of the sealing ring 130 under low pressure. Under high pressure, the high-pressure air in the cooking cavity 111 is used to press the inner sealing ring 132 onto the body 110, which ensures the sealing performance of the sealing ring 130 under high pressure and prevents the leakage of high-pressure air in the cooking cavity 111.

[0045] Referring again to Figure 4, in some embodiments of this utility model, the thickness of the outer sealing ring 131 is greater than the thickness of the inner sealing ring 132. The outer sealing ring 131 withstands external air pressure, and its thicker structure can better resist pressure and ensure a sealing effect; the inner sealing ring 132 withstands the high-pressure air pressure inside the cooking cavity 111, and its relatively thinner structure, while meeting the sealing requirements, may be more likely to deform and conform to the body 110 under pressure, achieving a good seal.

[0046] In some embodiments of this utility model, the thickness of the outer sealing ring portion 131 is selected from any value from 0.5 mm to 1.5 mm. For example, the thickness of the outer sealing ring portion 131 can be 0.5 mm, 0.8 mm, 1 mm, 1.3 mm, and 1.5 mm, etc.

[0047] Furthermore, the thickness of the outer sealing ring portion 131 is selected from any value between 0.7 mm and 1.3 mm. For example, the thickness of the outer sealing ring portion 131 can be 0.7 mm, 0.9 mm, 1.1 mm, and 1.2 mm, etc.

[0048] In some embodiments of this utility model, the thickness of the inner sealing ring portion 132 is selected from any value from 0.35 mm to 1.1 mm. The thickness of the inner sealing ring portion 132 can be 0.35 mm, 0.5 mm, 0.7 mm, 0.9 mm, and 1.1 mm, etc.

[0049] Furthermore, the thickness of the inner sealing ring portion 132 is selected from any value between 0.6 mm and 1 mm. The thickness of the inner sealing ring portion 132 can be 0.6 mm, 0.8 mm, 0.9 mm, and 0.97 mm, etc.

[0050] The inventors derived the above-mentioned dimensional values ​​through extensive experimentation. By selecting the thickness of the outer sealing ring 131 from 0.5mm to 1.5mm (further selected from 0.7mm to 1.3mm), the cost and weight of the sealing ring 130 can be reasonably controlled according to actual needs while ensuring sealing performance. Simultaneously, the outer sealing ring 131 is ensured to have sufficient strength to withstand external air pressure, achieving a reliable low-pressure seal. The thickness of the inner sealing ring 132 is selected from 0.35mm to 1.1mm (further selected from 0.6mm to 1mm). While meeting high-pressure sealing requirements, the inner sealing ring 132 allows for flexible deformation, better conforming to the body 110, improving the tightness of the seal, and helping to control the overall performance and cost of the sealing ring 130.

[0051] As shown in Figure 4, in some embodiments of this utility model, an annular reinforcing rib 133 is provided at the end of the inner sealing ring 132 away from the outer sealing ring 131. This enhances the strength and stability of the inner sealing ring 132, prevents excessive deformation or damage to the inner sealing ring 132 under high pressure, ensures that the inner sealing ring 132 can continuously and effectively seal against the body 110, and improves the service life and sealing reliability of the sealing ring 130.

[0052] In some embodiments of this utility model, the included angle between the outer sealing ring portion 131 and the inner sealing ring portion 132 can be selected from any value between 100° and 160°. For example, the included angle between the outer sealing ring portion 131 and the inner sealing ring portion 132 can be 100°, 110°, 120°, 140° and 160°, etc.

[0053] Furthermore, the included angle between the outer sealing ring portion 131 and the inner sealing ring portion 132 can be selected from any value between 120° and 150°. For example, the included angle between the outer sealing ring portion 131 and the inner sealing ring portion 132 can be 125°, 135°, 145° and 150°, etc.

[0054] In this embodiment, the included angle between the outer sealing ring 131 and the inner sealing ring 132 is selected from 100° to 160° (further selected from 120° to 150°). This angle design allows the sealing ring 130 to better adapt to the shape of the body 110. During the sealing process, the outer sealing ring 131 and the inner sealing ring 132 can contact the body 110 more evenly, improving the uniformity and stability of the seal, thereby enhancing the sealing effect.

[0055] As shown in Figure 4, in some embodiments of this utility model, the sealing ring 130 includes a liquid-gathering ring portion 134, which is connected to the side of the outer sealing ring portion 131 near the center of the cooking cavity 111 and connected to the end of the outer sealing ring portion 131 away from the body 110.

[0056] Because the lower surface of a conventional rice cooker lid 120 is flat, condensation cannot fall back into the cooking cavity 111. When the user opens the lid 120, condensation accumulates on its lower surface. In this embodiment, a liquid-collecting ring 134 is provided on the sealing ring 130 to guide the condensation on the lower surface of the lid 120 to drip more quickly into the cooking cavity 111.

[0057] Referring again to Figure 4, in some embodiments of this invention, the liquid collection ring 134 is a downwardly protruding ring 135, and the surface of the ring 135 facing the body 110 is smooth. The downwardly protruding ring 135 structure can better collect liquid, and the smooth surface facilitates the smooth flow of liquid.

[0058] As shown in Figures 2 and 4, in some embodiments of this utility model, the cover 120 includes an inner cover support 121 and an inner cover 122. The inner cover support 121 supports and fixes the inner cover 122, and the inner cover 122 has a pressure relief valve 123. The lower end face of the inner cover support 121 contacts the sealing ring 130 to provide downward pressure on the sealing ring 130. An annular groove 136 is provided on the other side of the sealing ring 130 opposite to the convex ring 135, so that the lower end face of the inner cover support 121 and the sealing ring 130 form a two-point contact. The downward pressure applied by the inner cover support 121 to the sealing ring 130 helps to enhance the sealing force between the sealing ring 130 and the body 110, and improves the reliability of the seal.

[0059] It should be noted that, as shown in Figure 4, two-point contact means that the lower end face of the inner cover bracket 121 and the sealing ring 130 have two contact areas, which are separated by the annular groove 136.

[0060] Those skilled in the art will understand that by providing an annular groove 136 on the sealing ring 130 to form two-point contact, this embodiment can make the sealing ring 130 deform more evenly when subjected to pressure, better fit the body 110, further improve the sealing performance, and may also reduce local excessive wear of the sealing ring 130 caused by uneven pressure distribution, thus extending the service life of the sealing ring 130.

[0061] In some embodiments of this utility model, the cooking appliance 100 can be a rice cooker, which has an inner pot defining a cooking cavity 111. The inner pot has an outwardly folded rim, and a sealing ring 130 contacts the rim of the inner pot, thereby achieving a seal between the lid 120 and the inner pot. The rice cooker includes an outer shell, with the inner pot disposed within it. The lid 120 is rotatably connected to the outer shell, thereby opening or closing the cooking cavity 111. A latch can be provided on the lid 120 to lock it onto the inner pot and maintain a certain pre-tightening force between the lid 120 and the inner pot, so that the sealing ring 130 can achieve a good sealing effect between the lid 120 and the inner pot.

[0062] In some embodiments of this utility model, the cooking appliance 100 may also be a pressure cooker.

[0063] The technical solution of this utility model has been described in conjunction with several embodiments above. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is not limited to these specific embodiments. Without departing from the technical principles of this utility model, those skilled in the art can disassemble and combine the technical solutions in the above embodiments, and can also make equivalent changes or substitutions to the relevant technical features. Any changes, equivalent substitutions, improvements, etc., made within the technical concept and / or technical principles of this utility model will fall within the protection scope of this utility model.

Claims

1. A cooking utensil, characterized in that, include: The main body is limited to a cooking chamber for holding food; The lid is rotatably connected to the body to open or close the cooking cavity; A sealing ring is installed on the cover to seal against the body. The cross-section of the part of the sealing ring that contacts the body is U-shaped so that the sealing ring can seal both the high-pressure cooking chamber and the low-pressure cooking chamber.

2. The cooking utensil according to claim 1, characterized in that, The sealing ring has an outer sealing ring portion that extends obliquely away from the center of the cooking cavity, and an inner sealing ring portion that extends obliquely from the outer sealing ring portion toward the center of the cooking cavity. The outer sealing ring portion and the inner sealing ring portion form the inverted V-shaped structure. The outer sealing ring portion and the inner sealing ring portion respectively contact and seal with the body.

3. The cooking utensil according to claim 2, characterized in that, The outer sealing ring is connected to the external environment on the side facing away from the center of the cooking cavity, so that when the cooking cavity is in a low-pressure environment, the outside air presses the outer sealing ring against the machine body; the inner sealing ring is connected to the cooking cavity on the side facing the center of the cooking cavity, so that when the cooking cavity is in a high-pressure environment, the high-pressure air in the cooking cavity presses the inner sealing ring against the machine body.

4. The cooking utensil according to claim 2, characterized in that, The thickness of the outer sealing ring is greater than the thickness of the inner sealing ring.

5. The cooking utensil according to claim 2, characterized in that, The thickness of the outer sealing ring is selected from any value from 0.5 mm to 1.5 mm; and / or the thickness of the inner sealing ring is selected from any value from 0.35 mm to 1.1 mm; and / or an annular reinforcing rib is provided at the end of the inner sealing ring away from the outer sealing ring.

6. The cooking utensil according to claim 2, characterized in that, The angle between the outer sealing ring and the inner sealing ring is selected from any value between 100° and 160°.

7. The cooking utensil according to claim 2, characterized in that, The sealing ring includes a liquid-gathering ring portion, which is connected to the side of the outer sealing ring portion near the center of the cooking cavity and to the end of the outer sealing ring portion away from the body.

8. The cooking utensil according to claim 7, characterized in that, The liquid-coating ring is a downward-convex ring, and the surface of the convex ring facing the fuselage is smooth.

9. The cooking utensil according to claim 8, characterized in that, The cover includes an inner cover support, the lower end face of which contacts the sealing ring to provide downward pressure on the sealing ring. An annular groove is provided on the other side of the sealing ring opposite to the convex ring so that the lower end face of the inner cover support and the sealing ring form a two-point contact.

10. The cooking utensil according to any one of claims 1 to 9, characterized in that, The cooking appliance is a rice cooker or a pressure cooker.

Images