An electric rice cooker with a full-metal cooking cavity

Abstract

The utility model provides a kind of electric rice cooker of all-metal cooking cavity, including pot cover and the pot body with inner pot, the pot cover includes metal inner cover and sealing ring, the inner pot has inner pot flanging, the metal inner cover includes metal conduit arranged in plate body and first sealing surface arranged in the outer edge of the metal inner cover, the first sealing surface and inner pot mouth along or inner pot flanging are attached to form annular rigid sealing area, the metal conduit is arranged in plate body to form steam outlet to guide steam to discharge, the sealing ring has sealing portion around the outside of first sealing surface, and the sealing portion is in contact with inner pot flanging sealing. The electric rice cooker of the utility model can effectively reduce the food in the inner pot contact non-metallic parts, to improve user's use experience.

Description

Technical Field

[0001] This utility model relates to the technical field of kitchen appliances, and in particular to a rice cooker with an all-metal cooking cavity. Background Technology

[0002] Existing rice cookers include a lid and a pot body with an inner pot. The lid includes a sealing ring and a metal inner cover with a steam outlet. The inner pot has an inner pot flange. The lid fits onto the pot body, and the inner pot flange cooperates with the sealing ring to achieve a seal. After long-term use, the sealing ring is easily contaminated and difficult to clean, leading to problems such as discoloration, mold, and odor caused by chemical reactions. Since the food in the inner pot comes into contact with the sealing ring during cooking, continued use will affect the quality of the cooked rice and the user's experience, thus reducing the user's enjoyment.

[0003] Furthermore, existing metal inner lids have a steam valve on the side opposite to the inner pot. This steam valve has a plastic steam inlet pipe, one end of which abuts against the portion of the metal inner lid around the steam outlet, connecting the inlet pipe to the outlet and guiding steam out. Alternatively, some existing metal inner lids have a silicone seal at the steam outlet. Since food may boil and rise to the inner lid during cooking, hot food could enter the steam outlet and come into contact with the inlet pipe or the silicone seal, causing users to feel uneasy about using this type of rice cooker and resulting in a poor user experience. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a rice cooker with an all-metal cooking cavity, which can effectively reduce the contact between food in the inner pot and non-metallic parts and improve the user experience.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An electric rice cooker with an all-metal cooking cavity includes a lid and a pot body with an inner pot. The lid includes a metal inner cover and a sealing ring. The inner pot has an inner pot flange. The metal inner cover includes a metal conduit disposed on the plate body and a first sealing surface disposed on the outer edge of the metal inner cover. The first sealing surface fits against the rim of the inner pot or the inner pot flange to form an annular rigid sealing area. The metal conduit is disposed on the plate body to form a steam outlet to guide steam out. The sealing ring has a sealing portion surrounding the outside of the first sealing surface. The sealing portion contacts and seals with the inner pot flange.

[0007] In the rice cooker with the all-metal cooking cavity described above, the metal conduit is formed by stamping a plate, and one end of the metal conduit forms the steam outlet.

[0008] In the rice cooker with the aforementioned all-metal cooking cavity, the lid includes a steam valve mounted on the inner metal lid, the steam valve having a steam inlet pipe sleeved on the outside of a metal conduit.

[0009] In the rice cooker with the all-metal cooking cavity mentioned above, the lid also includes a temperature measuring head, and the inner metal lid is also provided with a temperature measuring hole through which the temperature measuring head passes. The temperature measuring hole is a flanged hole, and the flange of the flanged hole extends toward the side away from the inner pot.

[0010] In the rice cooker with the all-metal cooking cavity described above, the top surface of the inner pot's folded edge is provided with a second sealing surface, and the first sealing surface and the second sealing surface are fitted together to form a rigid sealing area.

[0011] In the rice cooker with the all-metal cooking cavity mentioned above, the rice cooker also includes a steamer basket. The top of the steamer basket has a supporting flange that extends outward and is supported on the inner pot flange. The metal inner lid and the top surface of the supporting flange form an annular rigid seal, and the supporting flange and the inner pot flange form an annular rigid seal.

[0012] In the rice cooker with the all-metal cooking cavity described above, the sealing ring includes a mounting part connected to the sealing part, and the mounting part is fixed to the inner metal cover.

[0013] In the rice cooker with the all-metal cooking cavity described above, the lid also includes a bracket and a fixing bracket. The bracket is fixed on the side of the inner metal lid away from the inner pot. The bracket is provided with a connecting column. The fixing bracket is detachably connected to the connecting column by fasteners. The mounting part is clamped and fixed between the fixing bracket and the inner metal lid.

[0014] In the rice cooker with the all-metal cooking cavity described above, the fixing bracket is provided with a through hole, the pot lid includes a liner, a top rod and a spring, the inner metal cover is floatingly mounted on the liner, one end of the top rod abuts against the liner, and the other end passes through the through hole, and the spring is pressed between the other end of the top rod and the inner metal cover.

[0015] In the rice cooker with the aforementioned all-metal cooking cavity, the support is welded to the inner metal cover.

[0016] The advantages of this utility model compared with the prior art are:

[0017] 1. In this invention, after the lid is placed on the pot body, the first sealing surface of the metal inner lid adheres to the inner pot to form a ring-shaped rigid sealing area. The sealing ring has a sealing part surrounding the outside of the first sealing surface, and the sealing part contacts and seals with the flange of the inner pot. This allows the rigid sealing area to be located inside the sealing part, thus separating the food in the inner pot from the sealing part, thereby preventing the food in the inner pot from contacting the silicone sealing part. In addition, the rigid sealing area forms a primary hard seal, while the sealing part contacts and seals with the flange of the inner pot to form a secondary soft seal, achieving a double seal to improve the sealing reliability between the metal inner lid and the inner pot. Finally, since the metal conduit is located on the plate to form a steam outlet to guide steam out, the food that boils and rises comes into contact with the metal conduit, rather than the plastic or silicone parts, thus improving the user experience.

[0018] 2. The metal conduit is formed by stamping a plate, with one end forming a steam outlet. The existing metal inner cover is made of stainless steel, which has a high food safety level. Therefore, using plate stamping to form the metal conduit can further improve its safety level, thus better protecting the health of consumers. Compared to separately processing and forming the metal conduit before assembling it with the metal inner cover, this technical solution eliminates the assembly process between the metal conduit and the metal inner cover, thereby improving product assembly efficiency.

[0019] 3. The pot lid includes a steam valve mounted on the inner metal lid. The steam valve has a steam inlet pipe, which is sleeved on the outside of the metal conduit. This design allows for the positioning of the steam valve through the metal conduit and the steam inlet pipe, while also effectively preventing food from coming into contact with the plastic steam inlet pipe, further ensuring food safety.

[0020] 4. The lid also includes a temperature sensor. The inner metal lid has a temperature sensor hole through which the temperature sensor passes. The temperature sensor hole is a flanged hole, with the flange extending towards the side away from the inner pot. This design allows the flanged hole to act as a barrier to prevent food from flowing onto the side of the inner metal lid away from the inner pot.

[0021] 5. The top surface of the inner pot's flange is provided with a second sealing surface, which fits against the first sealing surface to form a rigid sealing area. This design facilitates the processing and shaping of the second sealing surface, thereby reducing the processing difficulty of the inner pot.

[0022] 6. The rice cooker also includes a steamer basket. The top of the steamer basket has a supporting flange extending outward and supporting the inner pot's flange. The metal inner lid and the top surface of the supporting flange form a rigid annular seal, and the supporting flange and the inner pot's flange form a rigid annular seal. The rigid annular seal formed by the metal inner lid and the top surface of the supporting flange separates the food in the steamer basket from the sealed part, while the rigid annular seal formed by the supporting flange and the inner pot's flange separates the food in the inner pot from the sealed part. This prevents the food in the steamer basket and the inner pot from coming into contact with the sealed part, thus ensuring the health of the food in the steamer basket and the inner pot.

[0023] 7. The sealing ring includes a mounting part that connects to the sealing part, and the mounting part is fixed to the inner metal cover. With this design, the metal conduit is located on the inner metal cover, and only the structure of the inner metal cover needs to be modified, avoiding modifications to other structures of the pot lid, thereby reducing the product modification cost.

[0024] 8. The pot lid also includes a support and a fixing bracket. The support is fixed to the side of the inner metal lid away from the inner pot. The support has a connecting post, and the fixing bracket is detachably connected to the connecting post by fasteners. The mounting part is clamped and fixed between the fixing bracket and the inner metal lid. This design improves the reliability of the connection between the mounting part and the inner metal lid, preventing the sealing ring from shifting and reducing the sealing performance between the sealing part and the inner pot's flange. It also allows the sealing ring to be removed for easy replacement or cleaning.

[0025] 9. The mounting bracket has a through hole. The pot lid includes a liner, a push rod, and a spring. The inner metal lid is floatingly mounted on the liner. One end of the push rod abuts against the liner, and the other end passes through the through hole. The spring is press-fitted between the other end of the push rod and the inner metal lid. This design allows pressure to be applied to the inner metal lid via the push rod, resulting in a tighter fit between the first sealing surface and the inner pot, and improving the sealing reliability between the sealing part and the inner pot's flange. This, in turn, enhances the reliability of both the hard and soft seals in the rigid sealing area. Furthermore, mounting the push rod on the inner metal lid eliminates the need to modify the liner, thereby further reducing product modification costs.

[0026] 10. The bracket is welded to the inner metal lid. This design ensures that the side of the inner metal lid facing the inner pot is flat; furthermore, compared to fixing the bracket to the inner metal lid with screws, welding reduces the risk of air leakage. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a cross-sectional view of the rice cooker lid covering the inner pot when the steamer basket is not placed inside, according to Embodiment 1 of this utility model. Figure 1 ;

[0029] Figure 2 for Figure 1 A magnified view of part A in the diagram;

[0030] Figure 3 for Figure 1 A magnified view of part B in the diagram;

[0031] Figure 4 This is an exploded view of the metal inner cover assembly in Embodiment 1 of this utility model;

[0032] Figure 5 This is a cross-sectional view of the assembled metal inner cover assembly in Embodiment 1 of this utility model;

[0033] Figure 6 for Figure 5 A magnified view of part of C;

[0034] Figure 7 This is a cross-sectional view of the rice cooker lid covering the inner pot when the steamer basket is not placed inside, according to Embodiment 1 of this utility model. Figure 2 ;

[0035] Figure 8 for Figure 7 A magnified view of part of D;

[0036] Figure 9 This is a top view of the pot lid in Embodiment 1 of this utility model;

[0037] Figure 10 This is a schematic diagram of the structure of the liner, the metal inner cover assembly, the steamer, and the inner pot in Embodiment 1 of this utility model;

[0038] Figure 11 This is a cross-sectional view of the rice cooker lid covering the inner pot when a steamer basket is placed inside, according to Embodiment 1 of this utility model.

[0039] Figure 12 for Figure 11 A magnified view of part of E in the diagram.

[0040] Figure label:

[0041] 100. Pot lid; 110. Metal inner lid; 111. First sealing surface; 112. Steam outlet; 113. Metal conduit; 114. Sloping platform; 115. Return hole; 120. Sealing ring; 121. Sealing part; 122. Mounting part; 130. Steam valve; 131. Valve seat; 132. Valve cover; 133. Steam inlet pipe; 140. Bracket; 141. Base plate; 142. Connecting column; 150. Fixing bracket; 151. Cavity; 152. Through hole; 153. Inner ring wall; 160. Liner; 170. Push rod; 171. Limiting ring; 180. Spring;

[0042] 200. Inner pot; 210. Inner pot body; 220. Inner pot flange; 221. Second sealing surface;

[0043] 300. Steamer; 310. Support for the folding edge. Detailed Implementation

[0044] The technical solutions of the present invention will now be described with reference to the accompanying drawings in the embodiments of the present invention.

[0045] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0046] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to 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.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between 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.

[0048] In this utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "a particular embodiment," "example," or "specific example" indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.

[0049] Example 1

[0050] like Figures 1 to 9 As shown, the rice cooker with an all-metal cooking cavity in this embodiment includes a lid 100 and a pot body with an inner pot 200. The lid 100 includes a metal inner cover 110 and a sealing ring 120. The inner pot 200 includes an inner pot body 210 and an inner pot flange 220 formed by folding the opening of the inner pot body 210 outward. The metal inner cover 110 includes a plate, a metal conduit 113 disposed on the plate, and a first sealing surface 111 disposed on the outer edge of the metal inner cover. The first sealing surface 111 and the inner pot flange 220 fit together to form an annular rigid sealing area. The metal conduit 113 is disposed on the plate to form a steam outlet 112 to guide steam out. The sealing ring 120 has a sealing part 121 surrounding the outside of the first sealing surface 111. The sealing part 121 contacts and seals with the inner pot flange 220.

[0051] When the rice cooker is in use, after the lid 100 is placed on the pot body, the metal inner lid 110 and the inner pot 200 cooperate to form a cooking cavity. The first sealing surface 111 of the metal inner lid 110 fits against the inner pot 200 to form an annular rigid sealing area. The sealing ring 120 has a sealing part 121 surrounding the outside of the first sealing surface 111. The sealing part 121 contacts and seals with the inner pot flange 220. This allows the rigid sealing area to be located inside the sealing part 121, thus separating the food in the inner pot 200 from the sealing part 121, thereby preventing the food in the inner pot 200 from contacting the silicone sealing part 121. In addition, the rigid sealing area can form a primary hard seal, while the sealing part 121 and the inner pot flange 220 form a secondary soft seal, thus achieving a double seal to improve the sealing reliability between the metal inner lid 110 and the inner pot 200. Finally, since the metal conduit 113 is located on the plate to form a steam outlet 112 to guide steam out, the food will come into contact with the metal conduit 113 after boiling and rising, rather than plastic or silicone parts, thus improving the user experience.

[0052] like Figures 2 to 4 As shown, in this embodiment, the inner metal cover 110 is a stainless steel cover. The plate of the inner metal cover 110 is stamped to form an upwardly extending metal conduit 113. The bottom end of the metal conduit 113 forms a steam outlet 112. This allows the metal conduit 113 to be made of stainless steel, thereby improving the safety level of the metal conduit 113 and further benefiting the health of consumers. Compared with the stainless steel metal conduit 113 being separately processed and then assembled with the inner metal cover 110, this technical solution can eliminate the assembly process of the metal conduit 113 and the inner metal cover 110, thereby improving the assembly efficiency of the product.

[0053] Understandably, the inner pot 200 can be made of stainless steel. In this way, the metal inner lid 110 is made of stainless steel, and the inner pot 200 is made of stainless steel. When the two are closed, an all-metal cooking cavity is formed inside the inner pot 200. The all-metal cooking cavity not only improves the cooking efficiency of the food inside the cavity, but also greatly reduces the possibility of food coming into contact with silicone or plastic during the cooking process, thus improving the health level of the food. In some embodiments, the inner surface of the inner pot 200 that comes into contact with food may be coated with a coating. This coating may be a conventional coating, and may be a coating made primarily of metal or non-metal materials. It may also cooperate with the metal inner lid 110 to form a metal cooking cavity. However, since the metal inner lid 110 is made of metal, in order to reduce the scratching of the coating on the inner surface of the inner pot 200 by the metal inner lid 110, in some preferred embodiments, the inner pot 200 may be composed of an outer layer (made of stainless steel, aluminum or other metal materials), a heat-conducting layer (preferably made of aluminum), and an inner metal layer (preferably a stainless steel layer) that comes into contact with food. The surface of the inner metal layer may be provided with a textured or pitted structure to improve its non-stick performance. The heat-conducting layer improves the heat conduction capacity of the inner pot 200, thereby making the cooking performance of the rice cooker with an all-metal cooking cavity provided by this utility model better. A lower-cost inner pot 200 is also provided, in which the inner pot 200 may be made entirely of stainless steel or a single metal, thereby reducing the manufacturing cost of the inner pot.

[0054] The pot lid 100 in this embodiment also includes a steam valve 130 installed on the inner metal lid 110. The steam valve 130 has a detachably connected valve seat 131 and valve cover 132. The valve seat 131 and valve cover 132 are typically made of plastic. The valve cover 132 is screwed or snapped onto the valve seat 131 to form a valve cavity. The bottom of the valve seat 131 is provided with a steam inlet pipe 133 located in the valve cavity. The lower end of the steam inlet pipe 133 is sleeved on the outside of the metal conduit 113 to achieve communication between the two. The upper end of the steam inlet pipe 133 is connected to the valve cavity. The valve cover 132 is provided with a steam outlet that communicates with the outside. With this design, the steam valve 130 can be positioned by fitting the metal conduit 113 and the steam inlet pipe 133 together, and food can be effectively prevented from coming into contact with the plastic steam inlet pipe 133.

[0055] Since the height of food rising within the cooking cavity is limited, and considering the difficulty of the stamping process and the structural strength of the metal inner cover, the height of the metal conduit 113 in this embodiment is preferably between 5mm and 10mm. The inner wall of the steam inlet pipe 133 includes a small-diameter section and a large-diameter section arranged from top to bottom. Both the small-diameter section and the large-diameter section are cylindrical, and a stepped surface is formed at the connection between the small-diameter section and the large-diameter section. The metal conduit 113 matches the large-diameter section, and the top surface of the metal conduit 113 abuts against the stepped surface. The inner diameter of the metal conduit 113 is the same as the size of the small-diameter section. This allows the stepped surface to cover the top surface of the metal conduit 113, preventing the top surface of the metal conduit 113 from being exposed and accumulating dirt, which could affect food safety.

[0056] In this embodiment, the metal inner cover 110 has a partial recess to form a recessed platform 114. The steam outlet 112 is located on the bottom wall of the recessed platform 114. The valve seat 131 has an annular positioning rib inserted into the recessed platform 114. The annular positioning rib is arranged around the steam outlet 112. The annular positioning rib cooperates with the side wall of the recessed platform to position the valve seat 131 in the horizontal direction. A sealing element is provided between the annular positioning rib and the side wall of the recessed platform to prevent steam leakage in the valve cavity. A portion of the side wall of the steam inlet pipe 133 is integrally connected with the annular positioning rib.

[0057] In addition, the bottom wall of the platform is provided with a return hole 115, and an annular positioning rib surrounds the outside of the return hole 115 so that the return hole 115 is connected to the valve cavity. In this way, the condensate in the valve cavity can flow back into the cooking cavity through the return hole 115. Preferably, the return hole 115 is a flanged hole, and the flange of the return hole 115 extends upward and the height is no more than 2mm. This can ensure the return effect while also allowing the food to contact the stainless steel flange of the return hole 115 after it rises, rather than contacting other plastic or silicone parts, thereby further improving the user experience.

[0058] In this embodiment, the cross-sectional area of ​​the reflux hole 115 is between 19 mm² and 30 mm². This ensures that when there is no pressure in the cooking chamber, the condensate in the valve chamber can flow back into the inner pot 200 through the reflux hole 115. When there is slight pressure in the cooking chamber, the pressure and water tension within the cooking chamber can block the reflux hole 115, preventing gas from passing through and increasing the pressure within the cooking chamber. Furthermore, the cross-sectional area of ​​the steam outlet 112 is more than three times that of the reflux hole, ensuring that most of the steam from the outlet 112 enters the valve chamber.

[0059] It is understood that in other embodiments of this utility model, the steam valve may not have an inlet pipe, but rather the inlet pipe may be formed directly through a metal conduit. Steam flows from the all-metal cooking chamber to the steam outlet and then flows from the steam outlet into the inlet channel formed by the metal conduit. When the liquid in the all-metal cooking chamber boils violently, causing a large number of bubbles to rush into the steam valve, the inlet channel formed by the metal conduit allows the bubbles to break as they move within the channel, preventing them from overflowing from the lid's outlet to the outside. This reduces the user's need to clean up the overflowing bubbles and improves the user experience.

[0060] Furthermore, in this embodiment, the top surface of the inner pot flange 220 is provided with a second sealing surface 221. Both the first sealing surface 111 and the second sealing surface 221 are annular surfaces and they match, thus allowing the first sealing surface 111 and the second sealing surface 221 to fit together to form a rigid sealing area. Placing the second sealing surface 221 on the top surface of the inner pot flange 220 facilitates the processing and forming of the second sealing surface 221, thereby reducing the processing difficulty of the inner pot 200.

[0061] In this embodiment, the sealing portion 121 surrounds the outer side wall of the metal inner lid, and the sealing portion 121 gradually moves away from the side wall of the metal inner lid towards the inner pot 200. This improves the sealing reliability of the sealing portion 121 and the portion of the inner pot flange 220 located outside the second sealing surface 221. The sealing ring 120 also includes a mounting portion 122 connected to the sealing portion 121, and the mounting portion 122 is fixed to the metal inner lid 110. With this design, since the metal conduit 113 is located on the metal inner lid 110, only the structure of the metal inner lid 110 needs to be modified to install the mounting portion 122, avoiding modifications to other structures of the pot lid 100, thereby reducing the modification cost of the product.

[0062] like Figure 4 , Figure 6As shown, in order to fix the mounting part 122 to the metal inner cover 110, the pot lid 100 in this embodiment also includes an annular bracket 140 and an annular fixing bracket 150. The bracket 140 includes an annular base plate 141 and a plurality of connecting posts 142 circumferentially spaced on the base plate 141. The base plate 141 is fixed to the side of the metal inner cover 110 away from the inner pot 200. The connecting posts 142 extend from the base plate 141 in a direction away from the inner pot 200. The fixing bracket 150 is detachably connected to the connecting posts 142 by fasteners, wherein the connecting posts 142 are screw posts and the fasteners are screws. The mounting part 122 is a U-shaped structure with its opening facing the inner pot 200. The mounting part 122 is fitted onto the top of the side wall of the metal inner lid. The fixing bracket 150 has an annular cavity 151 to accommodate the mounting part 122. After the fixing bracket 150 is fixed to the bracket 140 with screws, the mounting part 122 is clamped and fixed between the fixing bracket 150 and the metal inner lid 110. This design can improve the connection reliability between the mounting part 122 and the metal inner lid 110, avoid the sealing ring 120 from shifting and reducing the sealing performance between the sealing part 121 and the inner pot flange 220, and also make the sealing ring 120 removable for easy replacement or cleaning.

[0063] It should be noted that in this embodiment, the valve seat 131 and the fixing frame 150 are integrally injection molded, and the metal inner cover 110, sealing ring 120, bracket 140 and fixing frame 150 are assembled to form a metal inner cover assembly.

[0064] Preferably, in this embodiment, the bracket 140 is welded to the metal inner cover 110. This design allows the side of the metal inner cover 110 facing the inner pot 200 to be flat; furthermore, compared to fixing the bracket 140 to the metal inner cover 110 with screws, welding can reduce the risk of air leakage.

[0065] It is understood that in other embodiments of this utility model, the bracket can also be fixed to the metal inner cover by screws, and a sealing ring is provided between the screws and the mounting holes of the metal inner cover.

[0066] In addition, such as Figure 4 , Figure 8 and Figure 9As shown, the pot lid 100 in this embodiment also includes a liner 160. The metal inner lid assembly is detachably connected to the liner 160. Specifically, the liner 160 has a slot (not shown in the figure) near the side where it is hinged to the pot body, and a snap-fit ​​(not shown in the figure) on the side away from the hinged side. When assembling the metal inner lid assembly with the liner 160, one end of the fixing bracket 150 is first inserted into the slot, and then the other end of the metal inner lid 110 is pressed towards the liner 160 to engage the other end of the fixing bracket 150 with the snap-fit. This detachable connection is prior art and will not be described in detail here. The above-mentioned detachable connection method causes the metal inner lid assembly to float slightly up and down relative to the liner 160, thereby forming a floating installation of the metal inner lid 110 on the liner 160.

[0067] To improve the sealing reliability between the rigid sealing area and the sealing part 121 and the inner pot flange 220 when the metal inner lid 110 is floatingly mounted on the liner 160, the fixing frame 150 in this embodiment is also provided with a plurality of through holes 152 evenly spaced circumferentially. The pot lid 100 also includes a push rod 170 and a spring 180. The push rod 170 is set through the through hole 152, which is a stepped hole. A limiting ring 171 is provided on the outer periphery of the push rod 170. The limiting ring 171 is located in the large hole section of the through hole 152 and its outer diameter is larger than that of the small hole section of the through hole 152. The small hole section is located above the large hole section, which can prevent the push rod 170 from coming out of the through hole 152. The upper end of the push rod 170 passes through the through hole. 152 and abut against the liner 160, while the spring 180 is sleeved on the lower end of the push rod 170 and pressed between the limiting ring 171 and the plate. With this design, the push rod 170 can apply pressure to the metal inner cover 110, so that the first sealing surface 111 fits more tightly with the inner pot 200 and improves the sealing reliability of the sealing part 121 and the inner pot flange 220, thereby improving the reliability of the hard seal and the soft seal in the rigid sealing area. In addition, the push rod 170 is installed on the metal inner cover 110, which can avoid the modification of the liner 160, thereby further reducing the modification cost of the product. Finally, after disassembling the metal inner cover assembly, the push rod 170 and the spring 180 can be prevented from falling off.

[0068] It should be noted that the fixing bracket 150 in this embodiment also includes an inner ring wall 153, which abuts against the side of the metal inner cover 110 away from the inner pot 200 to cover the spring 180 to prevent it from being exposed and getting dirty.

[0069] like Figures 10 to 12As shown, the rice cooker in this embodiment also includes a steamer 300. The top of the steamer 300 has a supporting flange 310 extending outward and supported on the inner pot flange 220. The metal inner cover 110 and the top surface of the supporting flange 310 form an annular rigid seal, and the supporting flange 310 and the inner pot flange 220 form an annular rigid seal. The annular rigid seal formed by the metal inner cover 110 and the top surface of the supporting flange 310 can separate the food in the steamer 300 from the sealing part 121, while the annular rigid seal formed by the supporting flange 310 and the inner pot flange 220 can separate the food in the inner pot 200 from the sealing part 121. This can prevent the food in the steamer 300 and the inner pot 200 from contacting the sealing part 121, thereby ensuring the health of the food in the steamer 300 and the inner pot 200.

[0070] It is understood that in other embodiments of this utility model, the mounting portion of the sealing ring can also be directly fixed to the metal inner cover by means of a sleeve connection.

[0071] It is understood that in other embodiments of this utility model, the mounting portion of the sealing ring may also be mounted on the liner, with the sealing ring surrounding the outside of the metal inner cover.

[0072] It is understood that in other embodiments of this utility model, the side wall of the inner pot body includes a constricted neck and a flared portion located above the constricted neck. The flared portion forms the rim of the inner pot, and the inner side of the flared portion forms a third sealing surface. The third sealing surface is set close to the flange of the inner pot. The metal inner cover is provided with a sealing platform recessed towards the inner pot. The outer peripheral surface of the sealing platform forms a first sealing surface. The first sealing surface and the third sealing surface fit together to form the rigid sealing area.

[0073] It is understood that in other embodiments of this utility model, the plate body can also be formed by stamping to form a downwardly extending metal conduit, in which case the top end of the metal conduit forms a steam outlet.

[0074] It is understood that in other embodiments of this utility model, the metal conduit can also be fixed to the metal inner cover by welding, and the height of the metal conduit can be made unrestricted by processing by using a split processing method. In this way, the metal conduit can extend to the top of the liner and communicate with the outside, thus eliminating the need for a steam valve.

[0075] It is understood that in other embodiments of this utility model, the bottom wall of the valve seat is provided with a steam inlet corresponding to the steam outlet, and a sealing ring is provided between the steam inlet and the steam outlet, which surrounds the outside of the metal conduit. The sealing ring can be separated by the metal conduit to effectively prevent food from contacting the sealing ring.

[0076] Example 2

[0077] Unlike Embodiment 1, in order to achieve an all-steel design within the visible area of ​​the metal inner lid, i.e., without any other plastic or silicone parts, this embodiment, while including a temperature sensor on the lid, also features a temperature sensor hole in the center of the metal inner lid for the sensor to pass through. This temperature sensor hole is a flanged hole, with the flange extending towards the side away from the inner pot. This design allows the flanged edge of the hole to act as a barrier against food, preventing food from flowing onto the side of the metal inner lid away from the inner pot.

[0078] Example 3

[0079] Unlike Embodiment 2, the metal inner cover includes a steam outlet that penetrates its plate. In this embodiment, no metal conduit is provided at the steam outlet, which makes the structure of the metal inner cover simpler and easier to manufacture.

[0080] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0081] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0082] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rice cooker with an all-metal cooking cavity, comprising a lid and a pot body having an inner pot, the lid comprising a metal inner cover and a sealing ring, the inner pot having an inner pot flange, characterized in that, The metal inner cover includes a metal conduit disposed on the plate body and a first sealing surface disposed on the outer edge of the metal inner cover. The first sealing surface is fitted with the inner pot opening edge or the inner pot flange to form an annular rigid sealing area. The metal conduit is disposed on the plate body to form a steam outlet to guide steam out. The sealing ring has a sealing part surrounding the outside of the first sealing surface. The sealing part contacts and seals with the inner pot flange.

2. The rice cooker with an all-metal cooking cavity as described in claim 1, characterized in that, The metal conduit is formed by stamping a plate, and one end of the metal conduit forms the steam outlet.

3. The rice cooker with an all-metal cooking cavity as described in claim 1, characterized in that, The pot lid includes a steam valve mounted on a metal inner lid, the steam valve having a steam inlet pipe sleeved on the outside of a metal conduit.

4. The rice cooker with an all-metal cooking cavity as described in claim 1, characterized in that, The pot lid also includes a temperature measuring head, and the metal inner lid is also provided with a temperature measuring hole through which the temperature measuring head passes. The temperature measuring hole is a flanged hole, and the flange of the flanged hole extends toward the side away from the inner pot.

5. A rice cooker with an all-metal cooking cavity as described in claim 1, characterized in that, The top surface of the inner pot flange is provided with a second sealing surface, and the first sealing surface and the second sealing surface are fitted together to form a rigid sealing area.

6. The rice cooker with an all-metal cooking cavity as described in claim 1, characterized in that, The rice cooker also includes a steamer basket, the top of which has a supporting flange extending outward and supported on the inner pot flange. The metal inner lid and the top surface of the supporting flange form an annular rigid seal, and the supporting flange and the inner pot flange form an annular rigid seal.

7. The rice cooker with an all-metal cooking cavity as described in claim 1, characterized in that, The sealing ring includes a mounting portion connected to the sealing part, and the mounting portion is fixed to the metal inner cover.

8. A rice cooker with an all-metal cooking cavity as described in claim 7, characterized in that, The pot lid also includes a bracket and a fixing frame. The bracket is fixed on the side of the metal inner lid away from the inner pot. The bracket is provided with a connecting column. The fixing frame is detachably connected to the connecting column by fasteners. The mounting part is clamped and fixed between the fixing frame and the metal inner lid.

9. A rice cooker with an all-metal cooking cavity as described in claim 8, characterized in that, The fixing frame has a through hole, the pot lid includes a liner, a top rod and a spring, the metal inner cover is floatingly mounted on the liner, one end of the top rod abuts against the liner and the other end passes through the through hole, and the spring is pressed between the other end of the top rod and the metal inner cover.

10. A rice cooker with an all-metal cooking cavity as described in claim 8, characterized in that, The bracket is welded to the inner metal cover.

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