Cooking utensil
By using a hollow pressure relief valve and a large exhaust port design, the problem of steam being difficult to expel in existing cooking appliances is solved, achieving effective control of the pressure inside the cooking cavity and rapid steam discharge.
Patent Information
- Application Number
- CN202422201917.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-09-06
AI Technical Summary
The pressure relief valves in existing cooking appliances are ineffective at releasing steam, resulting in excessive pressure inside the cooking cavity.
The pressure relief valve, which has a hollow structure, uses the steam pressure difference to make it float or fall to control the opening and closing of the exhaust port. Combined with the design of a large exhaust port, it enables the rapid discharge of steam.
Effectively control the pressure inside the cooking cavity, maintain a low pressure state, and ensure that steam can be released in time during the cooking process to avoid excessive pressure.
Smart Images
Figure CN223667721U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of cooking equipment, and particularly relates to a cooking appliance. BACKGROUND
[0002] The cooking appliance comprises a cooking body and a cover body, the cooking body is used for heating cooked food, the cooking body has a cooking cavity for containing food, the cover body is arranged on the cooking cavity, the cover body is provided with an exhaust port, the exhaust port is used for exhausting steam generated in the cooking process of the cooking body, and a pressure limiting valve is arranged on the exhaust port and used for controlling the exhaust port to exhaust gas.
[0003] In the related art, the pressure limiting valve makes it difficult for the exhaust port to exhaust steam, resulting in a large pressure in the cooking cavity. CONTENT OF THE UTILITY MODEL
[0004] Therefore, the present application provides a cooking appliance to facilitate the exhaust port to exhaust steam and maintain a small pressure in the cooking cavity.
[0005] The present application provides a cooking appliance, which comprises:
[0006] a cooking body having a cooking cavity;
[0007] a cover body arranged on the cooking cavity, the cover body being provided with an exhaust port in communication with the cooking cavity;
[0008] a pressure limiting valve arranged on the exhaust port, the pressure limiting valve being a hollow structure.
[0009] In an embodiment, the pressure limiting valve comprises a first shell and a second shell connected to each other, and the weight of the first shell is greater than that of the second shell.
[0010] In an embodiment, the first shell and the second shell are welded, and the distance from the first shell to a welding seam is equal to the distance from the second shell to the welding seam.
[0011] In an embodiment, the outer surface of the first shell and the outer surface of the second shell are both spherical caps, and the outer surface of the first shell and the outer surface of the second shell are located on the same spherical surface.
[0012] In an embodiment, the first shell and the second shell are made of the same material, and the difference between the wall thickness of the first shell and the wall thickness of the second shell is greater than or equal to 1 mm.
[0013] In an embodiment, the exhaust port is circular, the pressure limiting valve is a hollow spherical ball, the pressure limiting valve is supported on the hole wall of the exhaust port, and the diameter of the pressure limiting valve is greater than the diameter of the exhaust port.
[0014] In an embodiment, the pressure-limiting valve comprises a first shell and a second shell connected to each other, the outer surface of the first shell and the outer surface of the second shell are spherical caps, and the outer surface of the first shell and the outer surface of the second shell are located on the same spherical surface.
[0015] In an embodiment, the diameter of the exhaust port is greater than or equal to 10 mm.
[0016] In an embodiment, the difference between the outer diameter of the pressure-limiting valve and the diameter of the exhaust port is greater than or equal to 3 mm.
[0017] In an embodiment, when the pressure in the cooking cavity is greater than or equal to a rated pressure threshold, the pressure-limiting valve floats to allow the exhaust port to exhaust steam in the cooking cavity, and the rated pressure threshold is less than or equal to 5 kPa.
[0018] In an embodiment, the material of the pressure-limiting valve is stainless steel.
[0019] The embodiments of the present application provide a cooking appliance. The pressure-limiting valve cover is arranged at the exhaust port. When the pressure in the cooking cavity is small, the pressure-limiting valve seals the exhaust port to limit the exhaust of steam in the cooking cavity. During cooking, the steam in the cooking cavity increases, and the pressure in the cooking cavity increases. When the pressure in the cooking cavity increases to a set value, the steam pushing force on the pressure-limiting valve is greater than the gravity, the steam in the cooking cavity makes the hollow pressure-limiting valve float, the pressure-limiting valve is opened, the exhaust port can exhaust the steam in the cooking cavity, and the pressure in the cooking cavity is reduced. When the pressure in the cooking cavity decreases to a set value, the pressure-limiting valve falls to cover the exhaust port again, and the pressure-limiting valve is closed, so that the exhaust port can hardly exhaust steam. The hollow structure of the pressure-limiting valve has a large volume and a small weight, and the opening pressure of the pressure-limiting valve is small. The pressure-limiting valve can maintain a small pressure in the cooking cavity during cooking. The large size of the exhaust port can be realized, the steam in the cooking cavity can be quickly exhausted, and the pressure in the cooking cavity can be reduced. When the cooking appliance is in a pressureless cooking state, the large-area exhaust can realize the same pressure inside and outside the cooking cavity. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is an exploded view of the cooking appliance of the embodiments of the present application;
[0021] Figure 2 It is a structure view of the cover body and the pressure-limiting valve of the cooking appliance of the embodiments of the present application, and the exhaust port is not shown in the figure;
[0022] Figure 3 It is a structure view of the cover body of the cooking appliance of the embodiments of the present application, and the exhaust port is shown in the figure;
[0023] Figure 4 FIG. 3 is a structural view of a cover and a pressure limiting valve of a cooking appliance according to an embodiment of the present application, showing that the first shell and the second shell have the same wall thickness;
[0024] Figure 5 FIG. 4 is a structural view of a cover and a pressure limiting valve of a cooking appliance according to an embodiment of the present application, showing that the first shell and the second shell have different wall thicknesses.
[0025] BRIEF DESCRIPTION OF DRAWINGS
[0026] 1, cooking main body; 11, cooking cavity; 2, cover; 21, exhaust port; 211, hole wall; 3, pressure limiting valve; 31, first shell; 32, second shell; 33, weld. DETAILED DESCRIPTION
[0027] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.
[0028] In the specific embodiments, each specific technical feature described can be combined in any suitable manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, various possible combinations of each specific technical feature in the present application are not described again.
[0029] In the following description, the terms "first\second\..." are only used to distinguish different objects and do not mean that the objects have the same or related aspects. It should be understood that the terms "upper", "lower", "outer", "inner", "left", and "right" are the positions of the objects in the normal use state, and the "left" and "right" directions are the directions shown in the specific schematic diagram, which can be the left and right directions in the normal use state or not.
[0030] It should be noted that the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including one" does not exclude the presence of another identical element in the process, method, article or device including the element. "Multiple" means greater than or equal to two.
[0031] In the related art, during cooking, the cooking cavity generates a large amount of steam, and the pressure limiting valve needs to have a certain volume to block the exhaust port. The pressure limiting valve has a solid structure and is heavy. The pressure limiting valve always seals the exhaust port, and it is difficult for the exhaust port to exhaust steam during cooking, resulting in a large pressure in the cooking cavity.
[0032] In view of this, the present application provides a cooking appliance, please refer to Figures 1-5 , the cooking appliance comprises a cooking body 1, a cover 2 and a pressure limiting valve 3. The cooking body 1 has a cooking cavity 11, the cover 2 is arranged on the cooking cavity 11, the cover 2 has an exhaust port 21 communicating with the cooking cavity 11, and the pressure limiting valve 3 is arranged on the exhaust port 21. The pressure limiting valve 3 is a hollow structure.
[0033] Exemplarily, the cover 2 is located above the cooking body 1, and the pressure limiting valve 3 is arranged above the exhaust port 21.
[0034] It can be understood that the shape of the exhaust port 21 is matched with the cross-sectional shape of the pressure limiting valve 3.
[0035] In the present application, the pressure limiting valve 3 is arranged on the exhaust port 21. When the pressure in the cooking cavity 11 is small, the pressure limiting valve 3 seals the exhaust port 21 to limit the exhaust of steam in the cooking cavity 11. During cooking, the steam in the cooking cavity 11 increases, and the pressure in the cooking cavity 11 increases. When the pressure in the cooking cavity 11 increases to a set value, the thrust of the steam on the pressure limiting valve 3 is greater than the gravity, and the steam in the cooking cavity 11 will make the hollow pressure limiting valve 3 float up. The pressure limiting valve 3 is opened, so that the exhaust port 21 can exhaust the steam in the cooking cavity 11, and the pressure in the cooking cavity 11 is reduced. When the pressure in the cooking cavity 11 is reduced to a set value, the pressure limiting valve 3 falls and is arranged on the exhaust port 21 again. The pressure limiting valve 3 is closed, so that the exhaust port 21 can hardly exhaust steam. The hollow pressure limiting valve 3 has a large volume and a small weight, and the opening pressure of the pressure limiting valve 3 is small, so that the pressure in the cooking cavity 11 can be maintained small during cooking. The pressure limiting valve 3 has a small weight and a large volume, and the size of the matched exhaust port 21 can be large, so that large-area exhaust can be realized, the gas in the cooking cavity 11 can be quickly exhausted, and the pressure in the cooking cavity 11 can be reduced. When the cooking appliance is in a pressureless cooking state, large-area exhaust can realize the same pressure inside and outside the cooking cavity 11.
[0036] In an embodiment, please refer to Figures 1-5 , the exhaust port 21 is circular, the pressure limiting valve 3 is a hollow spherical ball, the pressure limiting valve 3 is supported on the hole wall 211 of the exhaust port 21, and the diameter of the pressure limiting valve 3 is greater than the diameter of the exhaust port 21.
[0037] In the embodiment of the present application, under the action of steam, the pressure limiting valve 3 can continuously rotate and jump on the exhaust port 21 to realize the opening and closing of the valve, and the contact surface between the spherical pressure limiting valve 3 and the hole wall 211 of the exhaust port 21 is always circular, so that the spherical pressure limiting valve 3 can close the circular exhaust port 21 as much as possible.
[0038] It can be understood that the shape of the exhaust port 21 is not limited to be circular, and the pressure limiting valve 3 is not limited to be a hollow sphere. For example, the pressure limiting valve 3 is a hollow ellipsoid, and the shape of the exhaust port 21 is adapted to the cross-sectional shape of the pressure limiting valve 3.
[0039] For example, the pressure limiting valve 3 is a hollow cube, and the shape of the exhaust port 21 is a square.
[0040] In an embodiment, referring to Figure 4 and Figure 5 , the pressure limiting valve 3 comprises a first shell 31 and a second shell 32 connected to each other, the outer surface of the first shell 31 and the outer surface of the second shell 32 are both spherical caps, and the outer surface of the first shell 31 and the outer surface of the second shell 32 are located on the same spherical surface.
[0041] In the embodiment of the present application, the pressure limiting valve 3 is divided into the first shell 31 and the second shell 32, and the first shell 31 and the second shell 32 are connected after being respectively manufactured, so that the pressure limiting valve 3 can be manufactured into a hollow sphere.
[0042] It can be understood that the outer surface of the first shell 31 and the outer surface of the second shell 32 are not limited to be spherical caps. For example, the outer surface of the first shell 31 is a spherical cap, the first shell 31 has an opening, and the second shell 32 is a plug that closes the opening of the first shell 31. In the manufacturing process of the hollow sphere, a spherical core is first manufactured, the core is placed in a spherical mold, and then the mold is closed and poured to obtain the first shell 31, which has an opening for removing the core after casting, and then the second shell 32 is used to close the opening of the first shell 31.
[0043] In an embodiment, referring to Figure 4 and Figure 5 , the pressure limiting valve 3 comprises a first shell 31 and a second shell 32 connected to each other, and the weight of the first shell 31 is greater than the weight of the second shell 32.
[0044] It can be understood that the shape of the exhaust port 21 is adapted to the cross-sectional shape of the first shell 31.
[0045] For example, the exhaust port 21 is circular, the shape of the first shell 31 is a semispherical body, and the shape of the second shell 32 is not limited.
[0046] In the embodiment of the present application, the weight of the first shell 31 is greater than the weight of the second shell 32, so that the gravity center of the pressure limiting valve 3 is inclined to the first shell 31. During the rotation and jumping of the pressure limiting valve 3, the first shell 31 with greater weight is located below under the action of gravity. The first shell 31 is always in contact with the hole wall 211 of the exhaust port 21, and the pressure limiting valve 3 can automatically correct the position in contact with the exhaust port 21, thereby avoiding the situation that the joint between the first shell 31 and the second shell 32 may not seal the exhaust port 21 tightly.
[0047] It can be understood that the weight of the first shell 31 is not limited to being greater than the weight of the second shell 32. For example, the weight of the first shell 31 is equal to the weight of the second shell 32.
[0048] In an embodiment, referring to Figure 4 and Figure 5 , the first shell 31 and the second shell 32 are welded, and the distance from the first shell 31 to the weld 33 is equal to the distance from the second shell 32 to the weld 33.
[0049] It should be noted that the distance from the first shell 31 to the weld 33 refers to the farthest distance from the first shell 31 to the weld 33, and the distance from the second shell 32 to the weld 33 refers to the farthest distance from the second shell 32 to the weld 33.
[0050] In the embodiment of the present application, the shapes of the first shell 31 and the second shell 32 can be substantially the same, which is convenient for manufacturing.
[0051] It can be understood that the distance from the first shell 31 to the weld 33 is not limited to being equal to the distance from the second shell 32 to the weld 33. For example, the distance from the first shell 31 to the weld 33 is greater than the distance from the second shell 32 to the weld 33.
[0052] In an embodiment, referring to Figure 4 and Figure 5 , the outer surfaces of the first shell 31 and the second shell 32 are spherical caps, and the outer surfaces of the first shell 31 and the second shell 32 are located on the same spherical surface.
[0053] It can be understood that the outer surface area of the first shell 31 is equal to the outer surface area of the second shell 32.
[0054] In the embodiment of the present application, the outer shapes of the first shell 31 and the second shell 32 can be made close to each other, which is convenient for manufacturing the first shell 31 and the second shell 32. The welding position of the first shell 31 and the second shell 32 is located at the maximum diameter of the spherical ball, which is also convenient for welding the first shell 31 and the second shell 32.
[0055] It can be understood that the outer surfaces of the first shell 31 and the second shell 32 are not limited to being located on the same spherical surface. Exemplarily, the outer surfaces of the first shell 31 and the second shell are not on the same spherical surface.
[0056] In an embodiment, referring to Figure 4 and Figure 5 , the first shell 31 and the second shell 32 are made of the same material, and the difference between the wall thickness of the first shell 31 and the wall thickness of the second shell 32 is greater than or equal to 1 mm.
[0057] It should be explained that the unit "mm" is millimeter.
[0058] Exemplarily, the difference between the wall thickness of the first shell 31 and the wall thickness of the second shell 32 is 1 mm, 2 mm, 3 mm, or 4 mm.
[0059] In the embodiment of the present application, the first shell 31 and the second shell 32 are made of the same material, which can reduce the cost of processing and manufacturing the first shell 31 and the second shell 32. The difference between the wall thickness of the first shell 31 and the wall thickness of the second shell 32 is greater than or equal to 1 mm, so that the first shell 31 and the second shell 32 have sufficient weight difference, the pressure limiting valve 3 is obviously eccentric, and the correction effect of the pressure limiting valve 3 is good.
[0060] It can be understood that the difference between the wall thickness of the first shell 31 and the wall thickness of the second shell 32 is not limited to being greater than or equal to 1 mm. Exemplarily, the difference between the wall thickness of the first shell 31 and the wall thickness of the second shell 32 is less than 1 mm.
[0061] Exemplarily, the difference between the wall thickness of the first shell 31 and the wall thickness of the second shell 32 is 0.8 mm.
[0062] It can be understood that the materials of the first shell 31 and the second shell 32 are not limited to being the same. Exemplarily, the material of the first shell 31 and the material of the second shell 32 are different, and the density of the material of the first shell 31 is greater than the density of the material of the second shell 32.
[0063] In an embodiment, referring to Figure 4 , the diameter of the exhaust port 21 is greater than or equal to 10 mm.
[0064] The diameter of the exhaust port 21 is shown as D1 in the figure.
[0065] Exemplarily, the diameter of the exhaust port 21 is 10 mm, 15 mm, 20 mm, 25 mm, or 35 mm.
[0066] In the embodiment of the present application, the diameter of the exhaust port 21 is greater than or equal to 10 mm, which can quickly discharge steam, avoid the gas generated rapidly in the cooking cavity 11 from being discharged in time, and cause the pressure in the cooking cavity 11 to be too large, and is beneficial to maintaining the pressure in the cooking cavity 11 in a micro-pressure state.
[0067] It can be understood that the diameter of the exhaust port 21 is not limited to being greater than or equal to 10 mm. Exemplarily, the diameter of the exhaust port 21 is less than 10 mm.
[0068] Exemplarily, the diameter of the exhaust port 21 is 7 mm.
[0069] In an embodiment, the diameter of the exhaust port 21 is less than or equal to 30 mm.
[0070] In an embodiment, the diameter of the pressure limiting valve 3 is greater than 15 mm.
[0071] In an embodiment, the area of the exhaust passage of the exhaust port 21 is greater than or equal to 80 square millimeters.
[0072] Preferably, the area of the exhaust passage of the exhaust port 21 is greater than or equal to 80 square millimeters, and the area of the exhaust passage of the exhaust port 21 is less than or equal to 300 square millimeters.
[0073] In an embodiment, referring to Figure 5 Figure 3 Figures 1-5 , the difference between the outer diameter of the pressure limiting valve 3 and the diameter of the exhaust port 21 is greater than or equal to 3 mm.
[0074] The outer diameter of the pressure limiting valve 3 is shown as D2 in the figure.
[0075] Exemplarily, the difference between the outer diameter of the pressure limiting valve 3 and the diameter of the exhaust port 21 is 3 mm, 4 mm, 5 mm, or 6 mm.
[0076] In an embodiment of the present application, the difference between the outer diameter of the pressure limiting valve 3 and the diameter of the exhaust port 21 is greater than or equal to 3 mm, which improves the sealing performance of the pressure limiting valve 3 to the exhaust port 21 and avoids the machining error of the pressure limiting valve 3 and the exhaust port 21 affecting the sealing effect.
[0077] It can be understood that the difference between the outer diameter of the pressure limiting valve 3 and the diameter of the exhaust port 21 is not limited to being greater than or equal to 3 mm. Exemplarily, the difference between the outer diameter of the pressure limiting valve 3 and the diameter of the exhaust port 21 is less than 3 mm.
[0078] Exemplarily, the difference between the outer diameter of the pressure limiting valve 3 and the diameter of the exhaust port 21 is 2 mm.
[0079] In an embodiment, when the pressure in the cooking cavity 11 is greater than or equal to a rated pressure threshold, the pressure limiting valve 3 floats to allow the exhaust port 21 to exhaust the steam in the cooking cavity 11, and the rated pressure threshold is less than or equal to 5 kPa.
[0080] Preferably, the rated pressure threshold is less than or equal to 5 kPa, and the rated pressure threshold is greater than or equal to 1 kPa.
[0081] In the embodiments of the present application, when the pressure in the cooking cavity 11 does not reach the rated pressure threshold, the pressure-limiting valve 3 is arranged on the exhaust port 21 to seal the exhaust port 21, when the pressure in the cooking cavity 11 reaches, the hollow pressure-limiting valve 3 rotates and jumps on the exhaust port 21, the exhaust port 21 can exhaust steam, control the pressure in the cooking cavity 11 to be 5 kPa or less, and maintain a small pressure in the cooking cavity 11 during cooking.
[0082] It can be understood that the rated pressure threshold is not limited to less than or equal to 5 kPa. Exemplarily, the rated pressure threshold is greater than 5 kPa.
[0083] In an embodiment, the material of the pressure-limiting valve 3 is stainless steel.
[0084] In the embodiments of the present application, the stainless steel material is not affected by high-temperature steam, and is not easy to have food odor residues. The stainless steel pressure-limiting valve 3 has a certain weight and can better seal the exhaust port 21.
[0085] It can be understood that the material of the pressure-limiting valve 3 is not limited to stainless steel. Exemplarily, the material of the pressure-limiting valve 3 is aluminum.
[0086] Exemplarily, the material of the pressure-limiting valve 3 is rubber.
[0087] In an embodiment, the surface of the pressure-limiting valve 3 is smooth, and the friction between the exhaust port 21 and the pressure-limiting valve 3 does not limit the rotation of the pressure-limiting valve 3.
[0088] In the description of the present application, the description of the terms "an embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.
[0089] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A cooking appliance characterized by, The utility model relates to a cooking device, comprising: a cooking body having a cooking cavity; a cover body covering the cooking cavity, the cover body having an exhaust port communicating with the cooking cavity; a pressure limiting valve covering the exhaust port, the pressure limiting valve being a hollow structure; the pressure limiting valve comprises a first shell and a second shell connected to each other, the first shell having a weight greater than that of the second shell.
2. The cooking appliance of claim 1, wherein, the first shell and the second shell are welded, the distance from the first shell to the weld seam being equal to the distance from the second shell to the weld seam.
3. The cooking appliance of claim 2, wherein, the outer surface of the first shell and the outer surface of the second shell are both spherical caps, and the outer surface of the first shell and the outer surface of the second shell are located on the same spherical surface.
4. The cooking appliance of claim 3, wherein, the first shell and the second shell are made of the same material, and the difference between the wall thickness of the first shell and the wall thickness of the second shell is greater than or equal to 1 mm.
5. The cooking appliance of claim 1, wherein, the exhaust port is circular, the pressure limiting valve is a hollow spherical ball, the pressure limiting valve is supported on the hole wall of the exhaust port, and the diameter of the pressure limiting valve is greater than the diameter of the exhaust port.
6. The cooking appliance of claim 5, wherein, the pressure limiting valve comprises a first shell and a second shell connected to each other, the outer surface of the first shell and the outer surface of the second shell are both spherical caps, and the outer surface of the first shell and the outer surface of the second shell are located on the same spherical surface.
7. The cooking appliance according to any one of claims 3 to 6, characterized in that, the diameter of the exhaust port is greater than or equal to 10 mm.
8. The cooking appliance according to any one of claims 3 to 6, characterized in that, the difference between the outer diameter of the pressure limiting valve and the diameter of the exhaust port is greater than or equal to 3 mm.
9. The cooking appliance according to any one of claims 1 to 6, characterized in that, when the pressure in the cooking cavity is greater than or equal to a rated pressure threshold, the pressure limiting valve floats to allow the exhaust port to discharge steam in the cooking cavity, and the rated pressure threshold is less than or equal to 5 kPa.
10. The cooking appliance according to any one of claims 1 to 6, characterized in that, the material of the pressure limiting valve is stainless steel.