Electric rice cooker

Abstract

The utility model discloses an electric rice cooker, including the pot body with inner pot and the pot cover with metal inner cover, the mouth part of inner pot is equipped with the flanging that extends outward, the metal inner cover includes the sealing surface, the sealing surface and the top surface of flanging seal and fit, the metal inner cover has the annular guide surface to the side of inner pot, the sealing surface is surrounded in the outside of guide surface and is linked with the guide surface, the guide surface from sealing surface to the center direction of metal inner cover extends and gradually away from inner pot, to the water tightness of condensed water on the guide surface of guide flow to the sealing surface formation, the utility model discloses an electric rice cooker, and the steam produced when cooking will form condensed water after contacting the metal inner cover, and the condensed water flows to the sealing surface under the guidance of guide surface and can fill the gap between sealing surface and flanging and form water tightness, so it can effectively improve the sealing effect between metal inner cover and inner pot, thereby effectively avoiding the air leakage.

Description

[Technical Field]

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to rice cookers. [Background Technology]

[0002] Existing rice cookers include a pot body and a lid. The pot body includes an inner pot, and the lid includes a metal inner lid with a sealing ring. When the lid is closed on the pot body, the inner pot flips up and engages with the sealing ring to achieve a seal. After long-term use, the sealing ring on the metal inner lid is easily contaminated and difficult to clean, leading to problems such as discoloration, mold, and displacement of the sealing ring. Continued use will affect the quality of cooking rice and is also detrimental to the health of the consumer, thus reducing the user experience.

[0003] To address the aforementioned technical problems, Chinese patent CN207532306U discloses a technical solution for achieving a sealing fit between the edge of the metal inner lid and the flange of the inner pot without a sealing ring. Specifically, the metal inner lid is floatingly mounted on the outer lid assembly. Pressure is applied to the metal inner lid via an elastic element, pressing its outer edge firmly against the flange of the inner pot, thus achieving a rigid seal. However, due to the low structural strength of the metal inner lid, its edge is prone to deformation, leading to gaps between the edge of the inner lid and the flange of the inner pot, resulting in seal failure and air leakage. In other words, a rigid seal alone cannot guarantee a secure seal, thereby reducing the cooking efficiency of the rice cooker. [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 in which the steam generated during cooking comes into contact with the metal inner lid and forms condensation. The condensation flows to the sealing surface under the guidance of the guide surface and fills the gap between the sealing surface and the flange to form a water seal. This can effectively improve the sealing effect between the metal inner lid and the inner pot, thereby effectively preventing air leakage.

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

[0006] An electric rice cooker includes a pot body with an inner pot and a lid with a metal inner lid. The opening of the inner pot is provided with an outwardly extending flange. The metal inner lid includes a sealing surface that is sealed and fitted to the top surface of the flange. The side of the metal inner lid facing the inner pot has an annular guide surface. The sealing surface surrounds the outside of the guide surface and is connected to the guide surface. The guide surface extends from the sealing surface toward the center of the metal inner lid and gradually moves away from the inner pot to guide the condensate water condensed on the guide surface to the sealing surface to form a water seal.

[0007] In the above-mentioned rice cooker, the guiding surface is a conical surface that gradually tapers away from the inner pot, or the guiding surface is a bowl-shaped or domed surface that bulges away from the inner pot.

[0008] In the rice cooker described above, the guide surface extends to the center of the inner metal lid.

[0009] In the rice cooker described above, the center of the metal inner lid is provided with a recessed groove, the bottom wall of the groove is provided with a temperature measuring hole, and the guide surface extends to the periphery of the groove.

[0010] In the rice cooker described above, the metal inner lid includes a top edge and a sealing edge formed by horizontally bending the outer edge of the top edge outwards. The top edge has a guide surface on the side facing the inner pot, and the sealing edge forms a sealing surface on the side facing the flange.

[0011] In the rice cooker described above, the metal inner lid also includes a side, one end of which is connected to the sealing edge, and the other end extends away from the inner pot.

[0012] In the rice cooker described above, the lid also includes a liner and a fan. The inner metal cover is detachably mounted on the liner. The inner metal cover and the liner cooperate to form a cooling air duct that communicates with the outside. The fan is used to send outside air into the cooling air duct to cool the inner metal cover.

[0013] In the rice cooker described above, the metal inner lid and the inner pot cooperate to form a cooking cavity, and the metal inner lid includes a top edge that covers the cooking cavity, with the cooling air duct formed between the entire top edge and the liner.

[0014] In the above-mentioned rice cooker, the pot lid also includes an outer lid, the fan is disposed between the liner and the outer lid, the outer lid is provided with a first air inlet, the center of the liner is provided with a first ventilation opening that communicates with the cooling air duct, and the fan works to form an airflow between the first air inlet and the first ventilation opening.

[0015] Alternatively, the liner may have a fixed cavity located in front of the inner metal cover. The cavity wall of the fixed cavity may have a second air inlet communicating with the outside and a second ventilation opening communicating with the cooling air duct. The fan may be installed in the fixed cavity to cause outside air to flow through the second air inlet to the second ventilation opening.

[0016] In the rice cooker described above, the lid also includes a liner, and the inner metal cover is floatingly mounted on the liner. A first elastic element is provided between the inner metal cover and the liner, and the first elastic element applies pressure to the inner metal cover so that the sealing surface tightly fits the top surface of the flange.

[0017] The beneficial effects of this utility model are:

[0018] 1. In the rice cooker of this utility model, when cooking, the metal inner lid and the inner pot cooperate to form a cooking cavity. The water in the cooking cavity is heated to form steam. The steam rises and comes into contact with the metal inner lid, where it cools down and forms condensate. Since the side of the metal inner lid facing the inner pot has an annular guiding surface, and the sealing surface surrounds the outside of the guiding surface and is connected to the guiding surface, and the guiding surface extends from the sealing surface toward the center of the metal inner lid and gradually moves away from the inner pot, that is, the guiding surface slopes downward from the inside to the outside, the condensate on the guiding surface can flow to the sealing surface under the active guidance of the guiding surface. If the sealing surface and the top surface of the flange fail to seal and a gap is generated, the condensate will fill the gap between the sealing surface and the top surface of the flange under capillary action, thus forming a water seal. The water seal can effectively prevent water vapor from passing through, thereby improving the sealing effect between the metal inner lid and the inner pot and effectively avoiding air leakage.

[0019] 2. The guide surface is a conical surface that gradually tapers away from the inner pot, or a bowl-shaped or domed surface that bulges away from the inner pot. This design facilitates the processing and shaping of the guide surface, thereby reducing the processing difficulty and manufacturing cost of the metal inner lid.

[0020] 3. The guide surface extends to the center of the inner metal cover. This design allows the guide surface to form a larger surface structure, making it easier for users to clean.

[0021] 4. The center of the metal inner cover has a recessed groove, and the bottom wall of the groove has a temperature measuring hole. The guide surface extends to the perimeter of the groove. This design enhances the overall rigidity of the metal inner cover through the groove, resisting deformation caused by repeated heating and extending its service life. In addition, extending the guide surface to the perimeter of the groove maximizes the guide surface area, guiding as much condensate from the inside of the metal inner cover as possible to the sealing surface, thus improving the water seal effect.

[0022] 5. The metal inner lid includes a top edge and a sealing edge formed by horizontally bending outward from the outer edge of the top edge. A guide surface is provided on the side of the top edge facing the inner pot, and a sealing surface is formed on the side of the sealing edge facing the flange. This increases the width of the sealing surface by increasing the width of the sealing edge, thereby increasing the contact area between the sealing surface and the top surface of the flange, and thus increasing the sealing reliability between the metal inner lid and the inner pot. Furthermore, the sealing edge also enhances the structural strength of the outer edge of the top edge, preventing deformation of the guide surface due to deformation of the outer edge, which would then prevent the guide surface from losing its function of guiding condensate.

[0023] 6. The metal inner lid also includes a side edge, one end of which connects to the sealing edge, and the other end extends away from the inner pot. This design enhances the strength of the metal inner lid, reduces deformation, and thus improves the rigid sealing reliability of the sealing surface and the flange.

[0024] 7. The pot lid also includes a liner and a fan. The inner metal cover is detachably installed on the liner. The inner metal cover and the liner work together to form a cooling air duct that connects to the outside. The fan is used to send outside air into the cooling air duct to cool the inner metal cover. This design, by cooling the inner metal cover, makes it easier for steam to condense on the inner surface of the inner metal cover, increasing the amount of condensate and thus enhancing the water seal between the sealing surface and the flanged top surface. In addition, it makes the cooling air duct easier to set up, and since both the cooling air duct and the fan are located on the pot lid, only the pot lid needs to be modified when modifying the product, thereby reducing modification costs. Finally, the air inlet side of the fan can be more easily placed away from the heat source of the rice cooker, thus ensuring that the air drawn in from the outside environment is cold air, which improves the cooling effect on the inner metal cover.

[0025] 8. The metal inner lid and the inner pot work together to form a cooking cavity. The metal inner lid includes a top edge that covers the cooking cavity, and a cooling air duct is formed between the entire top edge and the liner. With this design, when the fan is working, the airflow can pass over the top surface of the entire top edge to dissipate heat and cool the entire top edge, thereby improving the cooling effect on the inner surface of the entire top edge. This can generate more condensate, thereby improving the water seal effect.

[0026] 9. The pot lid also includes an outer cover. A fan is located between the liner and the outer cover. The outer cover has a first air inlet, and the center of the liner has a first vent that communicates with the cooling air duct. The fan operates to create airflow between the first air inlet and the first vent. Since the metal inner cover is usually detachable and installed on the liner, placing the fan on the side of the liner away from the inner cover avoids the fan being exposed and water entering when the metal inner cover is disassembled for cleaning, thus extending the fan's service life. Furthermore, since the side of the liner away from the metal inner cover has a mounting cavity, the fan can be placed inside the mounting cavity without additional space, further reducing the cost of modifying the liner. In addition, placing the first vent in the center of the liner allows the air entering the cooling air duct to diffuse from the center of the metal inner cover outwards, ensuring that the airflow passes over the entire top edge, achieving cooling of the entire top edge and generating more condensate.

[0027] Alternatively, the liner may have a fixed cavity located in front of the inner metal cover. The cavity wall has a second air inlet communicating with the outside and a second vent communicating with the cooling air duct. The fan is installed inside the fixed cavity, so that outside air flows through the second air inlet to the second vent. Using the liner as a mounting carrier for the fan facilitates the processing and shaping of the fixed cavity, thereby reducing modification costs.

[0028] 10. The pot lid also includes a liner, with the inner metal cover floatingly mounted on the liner. A first elastic element is provided between the inner metal cover and the liner, applying pressure to the inner metal cover to ensure that the sealing surface tightly conforms to the top surface of the flange. This design further enhances the sealing reliability between the sealing surface and the top surface of the flange.

[0029] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0030] The present invention will be further described below with reference to the accompanying drawings:

[0031] Figure 1 This is an explosion diagram of the rice cooker in Embodiment 1 of this utility model;

[0032] Figure 2 This is a schematic diagram of the metal inner cover in Embodiment 1 of this utility model;

[0033] Figure 3 for Figure 2 A magnified view of part A in the diagram;

[0034] Figure 4 This is a cross-sectional view of the assembly of the metal inner cover, liner, and fan in Embodiment 1 of this utility model;

[0035] Figure 5 This is a schematic diagram of the structure of the liner in Embodiment 1 of this utility model;

[0036] Figure 6 Cross-sectional view of the rice cooker in Embodiment 1 of this utility model Figure 1 ;

[0037] Figure 7 for Figure 6 A magnified view of part B in the diagram;

[0038] Figure 8 Cross-sectional view of the rice cooker in Embodiment 1 of this utility model Figure 2 ;

[0039] Figure 9 for Figure 8 A magnified view of part of C;

[0040] Figure 10 This is a schematic diagram of the structure of the metal inner cover in Embodiment 2 of this utility model.

[0041] Figure label:

[0042] 001, First gap; 002, Second gap; 003, Annular cavity;

[0043] 100. Pot body; 110. Inner pot; 111. Flanged edge; 200. Pot lid; 210. Metal inner lid; 2101. Sealing surface; 2102. Guide surface; 211. Top edge; 212. Sealing edge; 213. Sump; 2130. Temperature measuring hole; 214. Side; 220. Liner; 221. Mounting groove; 222. Guide seat; 2221. Snap-fit ​​hole; 223. Fixing cavity; 2231. Second vent; 2232. Second air inlet; 230. First elastic element; 231. Pressing element; 2311. Elastic buckle; 232. First spring; 240. Fan; 300. Cooling duct.

Detailed Implementation Methods

[0044] This utility model provides a rice cooker, including a pot body with an inner pot and a lid with a metal inner cover. The opening of the inner pot is provided with an outwardly extending flange. The metal inner cover includes a sealing surface, which is sealed and fitted to the top surface of the flange. The side of the metal inner cover facing the inner pot has an annular guiding surface. The sealing surface surrounds the outside of the guiding surface and is connected to the guiding surface. The guiding surface extends from the sealing surface toward the center of the metal inner cover and gradually moves away from the inner pot, so as to guide the condensate water condensed on the guiding surface to the sealing surface to form a water seal.

[0045] In this invention, the rice cooker, when cooking, forms a cooking cavity with the inner pot and the metal inner lid. The water in the cooking cavity is heated and turns into steam. The steam rises and cools down upon contact with the metal inner lid, forming condensation. The metal inner lid has an annular guiding surface on the side facing the inner pot, and a sealing surface surrounds the outside of the guiding surface and is connected to it. The guiding surface extends from the sealing surface towards the center of the metal inner lid and gradually moves away from the inner pot, i.e., the guiding surface slopes downward from the inside out. In this way, the condensation on the guiding surface can flow to the sealing surface under the active guidance of the guiding surface. If the seal between the sealing surface and the top surface of the flange fails and a gap is created, the condensation will fill the gap between the sealing surface and the top surface of the flange under capillary action, thus forming a water seal. The water seal can effectively prevent water vapor from passing through, thereby improving the sealing effect between the metal inner lid and the inner pot and effectively preventing air leakage.

[0046] The technical solutions of the embodiments of this utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of this utility model and not all of them. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of this utility model. In addition, it should be understood that the terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," and "bottom," etc., indicating orientation or positional relationship, are only based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device / component must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0047] Example 1

[0048] like Figures 1 to 9 As shown, the rice cooker in this embodiment includes a pot body 100 with an inner pot 110 and a lid 200 with a metal inner lid 210. The opening of the inner pot 110 is provided with an outwardly extending flange 111. The metal inner lid 210 has a sealing surface 2101. The sealing surface 2101 and the top surface of the flange 111 are sealed together to form an annular rigid sealing area, so that the metal inner lid 210 and the inner pot 110 cooperate to form a cooking cavity. The side of the metal inner lid 210 facing the inner pot has an annular guiding surface 2102. The sealing surface 2101 surrounds the outside of the guiding surface 2102 and is connected to the guiding surface 2102. The guiding surface 2102 extends from the sealing surface 2101 toward the center of the metal inner lid 210 and gradually moves away from the inner pot 110, so as to guide the condensed water condensed on the guiding surface 2102 to the sealing surface 2101 to form a water seal.

[0049] In this embodiment, during rice cooker cooking, the metal inner lid 210 and the inner pot 110 cooperate to form a cooking cavity. Water in the cooking cavity is heated to form steam. The rising steam cools upon contact with the metal inner lid 210, forming condensation. Since the metal inner lid 210 has an annular guide surface 2102 on the side facing the inner pot 110, a sealing surface 2101 surrounds the outside of the guide surface 2102 and is connected to it. The guide surface 2102 extends from the sealing surface 2101 towards the center of the metal inner lid 210 and gradually moves away from the inner pot 110. 10, that is, the guide surface 2102 is inclined downward from the inside to the outside. In this way, the condensate on the guide surface 2102 can flow to the sealing surface 2101 under the active guidance of the guide surface 2102. If the sealing surface 2101 and the top surface of the flange 111 fail to seal and a gap is generated, the condensate will fill the gap between the sealing surface 2101 and the top surface of the flange 111 under capillary action, thus forming a water seal. The water seal can effectively prevent water vapor from passing through, thereby improving the sealing effect between the metal inner cover 210 and the inner pot 110 and effectively avoiding air leakage.

[0050] Specifically, such as Figure 2 , Figure 3 and Figure 7 As shown, the metal inner cover 210 in this embodiment includes a top edge 211 and a sealing edge 212 formed by horizontally bending the outer edge of the top edge 211 outwards. The sealing edge 212 extends horizontally, and the side of the sealing edge 212 facing the flange 111 forms the aforementioned sealing surface 2101. The side of the top edge 211 facing the inner pot 110 is provided with the aforementioned guiding surface 2102. In this way, the width of the sealing surface 2101 can be increased by increasing the width of the sealing edge 212, thereby increasing the contact area between the sealing surface 2101 and the top surface of the flange 111, and thus increasing the sealing reliability between the metal inner cover 210 and the inner pot 110. In addition, the setting of the sealing edge 212 also enhances the structural strength of the outer edge of the top edge 211, preventing the outer edge of the top edge 211 from deforming and causing the guiding surface 2102 to deform and lose its guiding function for condensate.

[0051] In this embodiment, the guide surface 2102 is a bowl-shaped or domed surface that protrudes away from the inner pot 110. This design facilitates the processing and forming of the guide surface 2102, thereby reducing the processing difficulty and manufacturing cost of the metal inner lid 210.

[0052] Preferably, in this embodiment, the guide surface 2102 extends to the center of the metal inner cover 210, that is, the guide surface 2102 extends to the center of the top edge 211. This design allows the guide surface 2102 to form a larger arc-shaped structure, making it easier for the user to clean.

[0053] In this embodiment, the center of the metal inner cover 210 is provided with a recessed groove 213, which is formed by the downward deformation of the center of the top edge 211. The bottom wall of the groove 213 is provided with a temperature measuring hole 2130, and the guide surface 2102 extends to the periphery of the groove 213. This design can enhance the overall rigidity of the metal inner cover 210 (i.e., the top edge 211) through the groove 213, resist deformation caused by repeated heating, and extend its service life. In addition, the extension of the guide surface 2102 to the periphery of the groove 213 can maximize the area of ​​the guide surface 2102, so as to guide as much condensate on the inside of the metal inner cover 210 as possible to flow to the sealing surface 2101, thereby improving the water seal effect.

[0054] To further enhance the rigidity of the metal inner cover 210, the metal inner cover 210 in this embodiment also includes a side 214, one end of which is connected to the sealing edge 212, and the other end extends away from the inner pot 110. This design enhances the strength of the metal inner cover 210, reduces deformation of the metal inner cover 210, and thus improves the rigid sealing reliability of the sealing surface 2101 and the flange 111.

[0055] To further improve the tightness of the fit between the sealing surface 2101 and the top surface of the flange, the pot lid 200 in this embodiment also includes a liner 220 hinged to the pot body 100 on one side. The metal inner cover 210 is floatingly mounted on the liner 220, and a first elastic element 230 is provided between the metal inner cover 210 and the liner 220. The first elastic element 230 applies pressure to the metal inner cover 210 so that the sealing surface 2101 and the top surface of the flange can be tightly fitted, thereby further enhancing the sealing reliability between the sealing surface 2101 and the top surface of the flange.

[0056] It is understood that in other embodiments of this utility model, the metal inner cover may omit the side to simplify the structure of the metal inner cover. In this case, in order to enhance the structural strength of the sealing edge, the outer edge of the sealing edge may be rolled upward to form a rolled edge.

[0057] like Figure 1 , Figure 6 and Figure 7As shown, in this embodiment, the metal inner cover 210 is detachably connected to the liner 220. That is, the liner 220 has a slot (not shown in the figure) near the side where it is hinged to the pot body 100, and a buckle (not shown in the figure) is provided on the side of the liner 220 away from the side where it is hinged to the pot body 100. When assembling the metal inner cover 210 and the liner 220, first insert one end of the metal inner cover 210 into the slot, and then press the other end of the metal inner cover 210 towards the liner 220 to make the other end of the metal inner cover 210 engage with the buckle. This detachable connection is prior art and will not be described in detail here. The aforementioned detachable connection method causes the inner metal cover 210 to float slightly up and down relative to the liner 220, thus forming a floating installation of the inner metal cover 210 on the liner 220. When the inner metal cover 210 and the liner 220 are assembled and placed on the pot body 100, a first gap 001 is formed between the side 214 of the inner metal cover 210 and the inner side of the liner 220. After the pot lid 200 is placed on the pot body 100, the liner 220 and the pot body 100 form an annular cavity 003 surrounding the outer side of the inner metal cover 210 and the outer side of the inner pot 110. A second gap 002 will exist between the pot lid 200 and the pot body 100 at the hinge, and the second gap 002 communicates with the annular cavity 003.

[0058] Furthermore, in this embodiment, there are multiple first elastic elements 230. These multiple first elastic elements 230 are evenly spaced around the center of the metal inner cover 210. The first elastic elements 230 are press-fitted onto the top edge 211 near the sealing edge 212. This shortens the distance between the first elastic element 230 and the sealing edge 212, thereby reducing the loss caused by the leverage effect when the pressure is transmitted to the sealing edge 212. This allows the sealing edge 212 to be subjected to greater pressure, thereby improving the tightness of the fit between the sealing surface 2101 and the flanged top surface.

[0059] In this embodiment, the first elastic element 230 includes a pressing element 231 and a first spring 232 clamped between the pressing element 231 and the cover 220. The pressing element 231 is a pressing sleeve with an open upper end and a closed lower end. The first spring 232 is disposed inside the pressing sleeve. The cover 220 has a mounting groove 221 recessed away from the inner metal cover. A guide seat 222 is fixedly installed in the mounting groove 221. The guide seat 222 is independently machined and fixed in the mounting groove 221 by screws. The guide seat 222 has a guide hole for the pressing sleeve to be inserted. The side wall of the guide hole has a plurality of vertically extending snap holes 2221. The top of the pressing sleeve has a plurality of upwardly extending elastic buckles 2311 spaced around it. The elastic buckles 2311 engage with the snap holes 2221 and can float vertically relative to the snap holes 2221. The bottom wall of the guide hole has a... The positioning protrusion has the upper end of the first spring 232 sleeved on it, and the first spring 232 is pressed between the bottom wall of the guide seat 222 and the pressing member 231. This allows the first spring 232 to apply pressure to the pressing member 231 so that the pressing member 231 is pressed onto the metal inner cover 210. By setting the pressing member 231, the contact area between the first elastic member 230 and the metal inner cover 210 can be increased, thereby enhancing the reliability of the pressing of the first elastic member 230 onto the metal inner cover 210. In addition, the first spring 232 can be hidden to prevent it from coming into contact with water and rusting when wiping the liner 220 after removing the metal inner cover 210, thereby extending the service life of the first spring 232. Finally, the screw hole through which the screw passes by the screw head sealing mounting groove 221 can also prevent the steam entering between the metal inner cover 210 and the liner 220 from escaping through the screw hole.

[0060] In addition, such as Figure 1 , Figure 4 , Figures 8 to 9As shown, the lid 200 of this embodiment also includes a fan 240. The metal inner lid 210 and the liner 220 cooperate to form a cooling air duct 300 that communicates with the outside. The fan 240 is used to send outside air into the cooling air duct to cool the metal inner lid 210. The cooling air duct 300 communicates with the outside through a first gap 001, an annular cavity 003, and a second gap 002. Since the second gap 002 is located at the rear of the rice cooker, the air discharged from the cooling air duct 300 through the second gap 002 can keep the discharged air away from the user, so as to avoid the air blowing directly on the user and affecting the user's experience. At the same time, it can also keep the discharged air away from the user's ears to reduce noise perception. In addition, by using the gaps in various parts of the existing rice cooker to form an air outlet channel, it is also unnecessary to set up a connection between the outside and the cooling air duct on the rice cooker. The air outlet channel 300 simplifies the structure of the rice cooker and reduces modification costs. Secondly, by cooling the inner metal lid 210, steam can more easily condense on the inner surface of the inner metal lid 210, increasing the amount of condensate and thus increasing the amount of water flowing to the sealing surface, enhancing the water seal between the sealing surface 2101 and the flanged top surface. Furthermore, it makes the cooling air duct 300 easier to set up, and since both the cooling air duct 300 and the fan 240 are located on the lid 200, modifications to the product only require modifications to the lid 200, thereby reducing modification costs. Finally, the air inlet side of the fan 240 is easier to position away from the heat source of the rice cooker, thus ensuring that the air drawn in from the outside environment is cold air, thereby improving the cooling effect on the inner metal lid 210.

[0061] In this embodiment, the top edge 211 of the metal inner cover 210 covers the cooking cavity, and a cooling air duct is formed between the entire top edge 211 and the liner 220. With this design, when the fan 240 is working, the airflow can pass through the top surface of the entire top edge 211 to dissipate heat and cool the entire top edge 211, thereby improving the cooling effect on the inner surface of the entire top edge 211, which can generate more condensate and thus improve the water seal effect.

[0062] To enable the fan 240 to be installed on the pot lid 200, in this embodiment, the liner 220 has a fixing cavity 223 on the side away from its hinge. The fixing cavity 223 is located on the front side of the metal inner cover 210. The fixing cavity 223 has a first cavity wall facing the metal inner cover 210. The first cavity wall extends downward at least below the sealing edge 212. A second vent 2231 is provided at the part of the first cavity wall corresponding to the side 214, so that the second vent 2231 communicates with the cooling air duct 300 through the first gap 001. The top wall of the fixing cavity 223 has a second air inlet 2232 communicating with the outside. The fan 240 is a fan installed in the fixing cavity 223. The fan 240 is located between the second air inlet 2232 and the second vent 2231, so as to cause the outside air to flow from the second air inlet 2232 to the second vent 2231. With this design, when the fan 240 is working, the cold air from the outside is sent into the cooling air duct 300. When the cold air flows in the cooling air duct 300, it will cool down the entire metal inner cover 210, so that more condensate will be generated on the inner side of the metal inner cover 210. And more condensate will flow to the sealing surface 2101 under the guidance of the guide surface 2102, thereby improving the water sealing effect. In addition, the liner 220 serves as the mounting carrier for the fan 240, which facilitates the processing and forming of the fixing cavity 223, thereby reducing the modification cost.

[0063] It is understood that in other embodiments of this utility model, an annular cooling air duct is formed between the part of the top edge corresponding to the guide surface and the liner. That is, a baffle rib is provided between the part of the top edge corresponding to the inner ring side of the guide surface and the liner. The space between the top edge and the liner between the baffle rib and the side edge forms the above-mentioned cooling air duct. With this design, more condensate can be formed on the guide surface by steam to improve the water sealing effect.

[0064] It is understood that in other embodiments of this utility model, the fan may also be an air pump, which connects the second air inlet and the second ventilation outlet.

[0065] Example 2

[0066] like Figure 10 As shown, the difference between this embodiment and Embodiment 1 is that the guide surface 2102 in this embodiment is a conical surface that gradually tapers away from the inner pot.

[0067] Example 3

[0068] Compared with Embodiments 1 and 2, the difference in this embodiment is that the pot lid also includes an outer lid, and a fan is disposed between the liner and the outer lid. The top surface of the outer lid has a first air inlet, and the center of the liner has a first vent communicating with the cooling air duct. The fan operates to create airflow between the first air inlet and the first vent. Since the metal inner lid is usually detachably mounted on the liner, placing the fan on the side of the liner away from the inner lid can prevent the fan from being exposed and water from entering when the metal inner lid is disassembled for cleaning, thereby extending the service life of the fan; furthermore, since the liner is located on the side away from the inner lid... The side away from the inner metal cover has a mounting cavity, so the fan can be placed inside the mounting cavity without additional space, thereby further reducing the modification cost of the liner. In addition, the fan can be covered and hidden by the outer cover to avoid the fan being exposed and affecting the appearance of the pot lid, and to prevent water ingress due to exposure. Finally, the first vent is located in the center of the liner, which allows the air entering the cold air duct to diffuse from the center of the inner metal cover to the surrounding area, ensuring that the airflow passes through the entire top edge, thereby cooling the entire top edge and generating more condensate.

[0069] In this embodiment, the fan is a centrifugal fan, and the air outlet side of the centrifugal fan is located on its periphery. In order to connect the air outlet side of the centrifugal fan with the first vent, the pot lid also includes an adapter cover located on the side of the liner away from the inner metal cover. The adapter cover is fastened to the liner, one end of the adapter cover is connected to the air outlet side of the centrifugal fan, and the other end is connected to the first vent.

[0070] It is understood that in other embodiments of this utility model, the fan can also be an axial fan. In this case, the adapter cover can be omitted, and the axial fan can be placed between the first air inlet and the first ventilation outlet.

[0071] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. An electric rice cooker, comprising a pot body having an inner pot and a lid having a metal inner cover, wherein the opening of the inner pot is provided with an outwardly extending flange, and the metal inner cover includes a sealing surface, the sealing surface being sealed and fitted to the top surface of the flange, characterized in that, The inner metal lid has an annular guide surface on the side facing the inner pot. The sealing surface surrounds the outside of the guide surface and is connected to the guide surface. The guide surface extends from the sealing surface toward the center of the inner metal lid and gradually moves away from the inner pot, so as to guide the condensate on the guide surface to the sealing surface to form a water seal.

2. The rice cooker as described in claim 1, characterized in that, The guiding surface is a conical surface that gradually tapers away from the inner pot, or the guiding surface is a bowl-shaped or domed surface that bulges away from the inner pot.

3. The rice cooker as described in claim 1, characterized in that, The guide surface extends to the center of the inner metal cover.

4. The rice cooker as described in claim 3, characterized in that, The center of the metal inner cover is provided with a recessed groove, the bottom wall of the groove is provided with a temperature measuring hole, and the guide surface extends to the periphery of the groove.

5. The rice cooker as described in claim 1, characterized in that, The metal inner cover includes a top edge and a sealing edge formed by horizontally bending the outer edge of the top edge outward. The top edge has a guide surface on the side facing the inner pot, and the sealing edge forms a sealing surface on the side facing the flange.

6. The rice cooker as described in claim 5, characterized in that, The metal inner lid also includes a side, one end of which is connected to the sealing edge, and the other end extends away from the inner pot.

7. The rice cooker as described in claim 1, characterized in that, The pot lid also includes a liner and a fan. The inner metal cover is detachably installed on the liner. The inner metal cover and the liner cooperate to form a cooling air duct that communicates with the outside. The fan is used to send outside air into the cooling air duct to cool the inner metal cover.

8. The rice cooker as described in claim 7, characterized in that, The metal inner cover and the inner pot cooperate to form a cooking cavity. The metal inner cover includes a top edge that covers the cooking cavity, and the cooling air duct is formed between the entire top edge and the liner.

9. The rice cooker as described in claim 8, characterized in that, The pot lid also includes an outer cover, and the fan is located between the liner and the outer cover. The outer cover is provided with a first air inlet, and the center of the liner is provided with a first ventilation opening that communicates with the cooling air duct. The fan operates to create airflow between the first air inlet and the first ventilation opening. Alternatively, the liner may have a fixed cavity located in front of the inner metal cover. The cavity wall of the fixed cavity may have a second air inlet communicating with the outside and a second ventilation opening communicating with the cooling air duct. The fan may be installed in the fixed cavity to cause outside air to flow through the second air inlet to the second ventilation opening.

10. The rice cooker as described in claim 1, characterized in that, The pot lid also includes a liner, and the inner metal cover is floatingly mounted on the liner. A first elastic element is provided between the inner metal cover and the liner. The first elastic element applies pressure to the inner metal cover so that the sealing surface tightly fits the top surface of the flange.

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