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 inner pot is equipped with the first sealing surface, the metal inner cover is equipped with the second sealing surface, the first sealing surface and the second sealing surface are pasted and form the rigid sealing area of annular, still include the fan and the air duct with outside communication, the air duct is along the rigid sealing area circumferential arrangement, the fan is used to send the wind of outside into the air duct, to make the wind flow through the air duct and cool the rigid sealing area. The utility model discloses an electric rice cooker, the steam produced when cooking meets the rigid sealing area of low temperature and will become condensed water, and the condensed water will fill the gap between the metal inner cover and the inner pot and form water seal, which can effectively improve the sealing effect between the metal inner cover and the inner pot, thereby effectively avoiding 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 turns into condensate when it encounters the low-temperature rigid sealing area. The condensate fills the gap between the metal inner lid and the inner pot to form a water seal, which 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 cover. The inner pot has a first sealing surface, and the metal inner cover has a second sealing surface. The first sealing surface and the second sealing surface are fitted together to form an annular rigid sealing area. The rice cooker also includes a fan and an air duct that communicates with the outside. The air duct is arranged circumferentially along the rigid sealing area. The fan is used to send outside air into the air duct so that the airflow cools the rigid sealing area as it passes through the air duct.

[0007] In the above-mentioned rice cooker, the lid also includes a liner, the inner metal cover is installed on the liner, the inner metal cover and the liner cooperate to form the air duct, the fan is located on the side of the liner away from the inner cover, and the liner is provided with a first vent connecting the air outlet side of the fan and the air duct.

[0008] In the rice cooker described above, the lid also includes an outer cover, the fan is located between the outer cover and the liner, the outer cover has a first air inlet, the air inlet side of the fan is connected to the first air inlet, and the air outlet side of the fan is connected to the first ventilation opening.

[0009] In the rice cooker described above, the inner pot includes a side wall and a flange extending outward from the top of the side wall. The first sealing surface is located on the top surface of the flange or on the inner side of the side wall near the flange. The air duct includes an upper air duct located above the flange and / or a lower air duct located below the flange. The upper air duct surrounds the outside of the metal inner cover, and the lower air duct surrounds the outside of the side wall.

[0010] In the rice cooker described above, the lid also includes a liner, the inner metal cover is installed on the liner, the liner has a fixed cavity, the cavity wall of the fixed cavity has a second air inlet communicating with the outside and a second vent communicating with the air duct, and the fan is installed in the fixed cavity to cause the outside air to flow through the second air inlet to the second vent.

[0011] In the above-mentioned rice cooker, the pot body also includes an outer pot, the outer pot includes an outer shell and a heat preservation cover, the heat preservation cover has a cavity for accommodating the inner pot, the fan is provided between the heat preservation cover and the outer shell, the outer shell has a third air inlet and a third ventilation opening connected to the air duct, and the fan works to form an airflow between the third air inlet and the third ventilation opening.

[0012] In the above-mentioned rice cooker, the outer shell includes a shell and a middle ring installed on the top of the shell, the third air inlet is provided on the shell, the middle ring is provided with a recess for accommodating at least part of the pot lid, the bottom wall of the recess is connected to a first extension plate corresponding to the lower air duct, and the third vent is provided on the first extension plate.

[0013] Alternatively, the bottom wall of the settling tank is connected to a second extension plate corresponding to the upper and lower air ducts, and the third ventilation opening is located on the second extension plate and communicates with the upper and lower air ducts.

[0014] In the rice cooker described above, the top of the first extension plate is provided with a water-retaining eave that extends radially inward, and the water-retaining eave is located above the vent; the top of the second extension plate is provided with a water-retaining eave that extends radially inward, and the water-retaining eave is located above the vent.

[0015] 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.

[0016] In the rice cooker described above, the opening of the inner pot is provided with an outwardly extending flange, the top surface of the flange forms the first sealing surface, the outer edge of the metal inner cover protrudes downward to form a U-shaped groove, and the outer bottom surface of the U-shaped groove forms the second sealing surface.

[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 fan is turned on to send outside air into the air duct. During the air flow in the air duct, the air will circumferentially cool the rigid sealing area. When water vapor is generated in the cooking cavity, the water vapor will liquefy and form condensate when it comes into contact with the low temperature rigid sealing area. If the first sealing surface and the second sealing surface fail to seal and a gap is generated, the condensate will fill the gap between the first sealing surface and the second sealing surface under capillary action, thereby 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 pot lid also includes a liner, with a metal inner cover mounted on the liner. The metal inner cover and the liner together form an air duct. The fan is located on the side of the liner facing away from the inner cover. The liner has a first ventilation opening connecting the fan outlet to the air duct. This design makes the air duct easier to install, and since both the air duct and the fan are located on the pot lid, modifications to the product only require changes to the pot lid, thus reducing modification costs. Secondly, since the metal inner cover is usually detachable and mounted on the liner, placing the fan on the side of the liner facing away from the inner cover prevents the fan from being exposed and getting wet during cleaning of the metal inner cover, thus extending the fan's lifespan. Furthermore, since the side of the liner facing 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 modification costs of the liner. In addition, this design also... This design allows air to blow downwards from the liner, causing the cold air to sink and resulting in better cooling of the metal inner lid. Furthermore, blowing from above the rigid sealing area ensures a better and more stable formation of the cold end of the second sealing surface, as the lower surface of the metal inner lid is already cooler than the inner pot. Finally, blowing downwards from the liner also dries any small amount of overflowing steam, preventing any impact on electronic components or leakage into the external environment. Finally, the fan's air intake side can be positioned further away from the rice cooker's heat source, ensuring that the air drawn in from the outside is cold, thus enhancing the cooling effect on the rigid sealing area.

[0020] 3. The pot lid also includes an outer cover. The fan is located between the outer cover and the liner. The outer cover has a first air inlet. The air inlet side of the fan is connected to the first air inlet, and the air outlet side of the fan is connected to the first vent. This design allows the fan to be concealed by the outer cover, preventing the fan from being exposed and affecting the appearance of the pot lid, and avoiding the problem of water ingress due to exposure.

[0021] 4. The inner pot includes a side wall and a flange extending outward from the top of the side wall. The first sealing surface is located on the top surface of the flange or on the inner side of the side wall near the flange. The air duct includes an upper air duct located above the flange and / or a lower air duct located below the flange. The upper air duct surrounds the outside of the metal inner cover, and the lower air duct surrounds the outside of the side wall. This design allows for cooling of the flange by airflow through the upper and / or lower air ducts, thereby reducing the temperature of the first sealing surface and the rigid sealing area. It also prevents users from getting burned when touching the flange while retrieving rice. Furthermore, the lower air duct design, while cooling the rigid sealing area, also dissipates heat from the side walls, preventing sticking to the sides where the lower air duct is located. Finally, when the air duct includes both upper and lower ducts, the airflow within them creates a "pincer" cooling effect on the flange, increasing the cooling effect on both sides of the flange and further enhancing the cooling effect on the rigid sealing area. This ensures the formation of condensate and a water seal.

[0022] 5. A metal inner cover is installed on the liner. The liner has a fixed cavity. The cavity wall has a second air inlet communicating with the outside and a second vent communicating with the air duct. The fan is installed inside the fixed cavity to direct outside air through the second air inlet to the second vent. This design allows the fan to be located further away from the heat source of the rice cooker, ensuring that the air drawn in through the second air inlet is cold air, thereby improving the cooling effect on the rigid sealing area. Furthermore, using the liner as a mounting carrier for the fan facilitates the processing and shaping of the fixed cavity, reducing modification costs.

[0023] 6. The pot body also includes an outer pot, which comprises an outer shell and an insulation cover. The insulation cover has a cavity for accommodating the inner pot. A fan is installed between the insulation cover and the outer shell. The outer shell has a third air inlet and a third ventilation opening connected to an air duct. The fan operates to create airflow between the third air inlet and the third ventilation opening. This design keeps the fan away from the user's ears, reducing noise perception. Furthermore, utilizing the existing space between the insulation cover and the outer shell to install the fan allows for full utilization of the space and reduces the cost of modifying the pot body.

[0024] 7. The top of the first extension plate is provided with a water-retaining eave extending radially inward, located above the third vent; the top of the second extension plate is also provided with a water-retaining eave extending radially inward, located above the third vent. This design prevents water in the settling tank from flowing into the third vent, thus ensuring the normal operation of the fan.

[0025] 9. The pot lid also includes a liner, with a floating metal inner cover mounted on the liner. A first elastic element is provided between the metal inner cover and the liner, and the first elastic element applies pressure to the metal inner cover. This design allows the second sealing surface to remain in close contact with the first sealing surface under the pressure of the first elastic element, thereby further enhancing the sealing reliability between the first and second sealing surfaces.

[0026] 10. The inner pot has an outwardly extending flange at its opening. The top surface of the flange forms the first sealing surface. The outer edge of the metal inner lid protrudes downward to form a U-shaped groove, and the bottom surface of the U-shaped groove forms the second sealing surface. The U-shaped groove structure can strengthen the structural strength of the second sealing surface, making it less prone to deformation and ensuring a tight fit with the first sealing surface, further making the sealing connection between the two more stable.

[0027] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0028] The present invention will be further described below with reference to the accompanying drawings:

[0029] Figure 1 This is an explosion diagram of the pot lid in Embodiment 1 of this utility model;

[0030] Figure 2 This is a schematic diagram of the metal inner cover in Embodiment 1 of this utility model;

[0031] Figure 3 This is a bottom view of the liner in Embodiment 1 of this utility model;

[0032] Figure 4 This is a cross-sectional view of the pot lid in Embodiment 1 of this utility model. Figure 1 ;

[0033] Figure 5 for Figure 4 A magnified view of part A in the diagram;

[0034] Figure 6 This is a cross-sectional view of the pot lid in Embodiment 1 of this utility model. Figure 2 ;

[0035] Figure 7 This is a cross-sectional view of the pot lid in Embodiment 1 of this utility model. Figure 3 ;

[0036] Figure 8 This is a cross-sectional view of the rice cooker in Embodiment 1 of this utility model;

[0037] Figure 9 for Figure 8 A magnified view of part B in the diagram;

[0038] Figure 10 This is an explosion diagram of the rice cooker in Embodiment 2 of this utility model;

[0039] Figure 11 This is a schematic diagram of the structure of the liner in Embodiment 2 of this utility model;

[0040] Figure 12 This is a cross-sectional view of the rice cooker in Embodiment 2 of this utility model;

[0041] Figure 13 for Figure 12 A magnified view of part of C;

[0042] Figure 14 This is an exploded view of the pot body in Embodiment 3 of this utility model;

[0043] Figure 15 This is a schematic diagram of the structure of the middle ring in Embodiment 3 of this utility model;

[0044] Figure 16 This is a schematic diagram of the fan bracket in Embodiment 3 of this utility model;

[0045] Figure 17 This is a cross-sectional view of the rice cooker in Embodiment 3 of this utility model;

[0046] Figure 18 for Figure 17 A magnified view of part of D;

[0047] Figure 19 This is a partial structural diagram of the pot body in Embodiment 4 of this utility model;

[0048] Figure 20 for Figure 19 A magnified view of part of E in the diagram;

[0049] Figure 21 This is a schematic diagram of the structure of the middle ring in Embodiment 4 of this utility model;

[0050] Figure 22 This is a schematic diagram of the structure of the metal inner cover in Embodiment 5 of this utility model;

[0051] Figure 23 This is a partial structural diagram of the metal inner lid and the inner pot in Embodiment 5 of this utility model.

[0052] Figure label:

[0053] 001, First gap; 002, Second gap; 003, Annular cavity;

[0054] 100. Pot body; 110. Inner pot; 1101. First sealing surface; 111. Flanged edge; 112. Side wall; 1121. Neck; 1122. Flared opening; 120. Outer pot; 121. Outer shell; 1210. Third air inlet; 1211. Shell; 1212. Middle ring; 1213. Settlement groove; 1214. Second extension plate; 1215. First extension plate; 1216. Third vent; 122. Insulation cover; 123. Protective cover; 124. Water baffle; 200. Pot lid; 201. First air inlet; 210. Metal inner lid; 2101. Second sealing surface; 211. U-shaped groove; 212. Flat plate; 213. Sealing... Sealing platform; 2131, windbreak rib; 220, liner; 221, mounting groove; 222, guide seat; 2221, snap-fit ​​hole; 223, inner baffle rib; 224, first ventilation opening; 225, fixing cavity; 2251, second ventilation opening; 2252, second air inlet; 230, first elastic element; 231, pressing element; 2311, elastic buckle; 232, first spring; 240, adapter cover; 250, outer cover; 251, outer cover body; 252, seat; 2521, channel; 253, wind baffle; 300, fan; 400, air duct; 410, upper air duct; 420, lower air duct; 500, bracket; 510, air outlet.

Detailed Implementation Methods

[0055] This utility model provides an electric rice cooker, including a pot body with an inner pot and a lid with a metal inner cover. The inner pot has a first sealing surface, and the metal inner cover has a second sealing surface. The first sealing surface and the second sealing surface are fitted together to form an annular rigid sealing area. It also includes a fan and an air duct communicating with the outside. The air duct is arranged circumferentially along the rigid sealing area. The fan is used to send outside air into the air duct so that the airflow cools the rigid sealing area when passing through the air duct.

[0056] In this invention, the rice cooker, when cooking, forms a cooking cavity by fitting the metal inner lid and the inner pot together. The fan is activated to send outside air into the air duct. As the air flows through the air duct, it cools the rigid sealing area circumferentially. When water vapor is generated in the cooking cavity, it liquefies upon contact with the low-temperature rigid sealing area, forming condensate. If the first sealing surface and the second sealing surface fail to seal and a gap is created, the condensate will fill the gap between the first sealing surface and the second sealing surface 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.

[0057] 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.

[0058] Example 1

[0059] 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 inner pot 110 is provided with a first sealing surface 1101, and the metal inner lid 210 is provided with a second sealing surface 2101. The first sealing surface 1101 and the second sealing surface 2101 are fitted together to form an annular rigid sealing area. The metal inner lid 210 and the inner pot 110 cooperate to form a cooking cavity. In addition, the rice cooker also includes a fan 300 and an air duct 400 communicating with the outside. The air duct 400 is arranged circumferentially along the rigid sealing area. The fan 300 is used to send outside air into the air duct 400 so that the airflow cools the rigid sealing area when passing through the air duct 400.

[0060] When the rice cooker in this embodiment is cooking, the fan 300 will be activated to send outside air into the air duct 400. As the air flows through the air duct 400, it will circumferentially cool the rigid sealing area. When water vapor is generated in the cooking cavity, the water vapor will liquefy and form condensate when it comes into contact with the low temperature rigid sealing area. If the first sealing surface 1101 and the second sealing surface 2101 fail to seal and a gap is generated, the condensate will fill the gap between the first sealing surface 1101 and the second sealing surface 2101 under capillary action, thereby 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 210 and the inner pot 110 and effectively avoiding air leakage.

[0061] Specifically, in this embodiment, the inner pot 110 has an outwardly extending flange 111 at its opening. The top surface of the flange 111 forms a first sealing surface 1101. The outer edge of the metal inner cover 210 protrudes downward to form a U-shaped groove 211, and the outer bottom surface of the U-shaped groove 211 forms a second sealing surface 2101. The design of the U-shaped groove 211 enhances the structural strength of the metal inner cover 210 and reduces its deformation, thereby strengthening the structural strength of the second sealing surface 2101. This makes the second sealing surface 2101 less prone to deformation, ensuring a tight fit with the first sealing surface 1101, and further making the sealing connection between the two more stable. In addition, the metal inner cover 210 includes a flat plate 212 for forming a large planar structure, which facilitates cleaning by the user. The U-shaped groove 211 surrounds the outside of the flat plate 212.

[0062] To further improve the tightness of the fit between the first sealing surface 1101 and the second sealing surface 2101, thereby enhancing the sealing performance of the rigid sealing area, the pot lid 200 in this embodiment also includes a liner 220 hinged to the pot body 100 on one side. A 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. By applying pressure to the metal inner cover 210 through the first elastic element 230, the second sealing surface 2101 and the first sealing surface 1101 can be tightly fitted, thereby further enhancing the sealing reliability of the first sealing surface 1101 and the second sealing surface 2101.

[0063] like Figure 8 As 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 inner surfaces of the inner metal cover 210 and 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 located at the hinge point exists between the pot lid 200 and the pot body 100, and the second gap 002 communicates with the annular cavity 003.

[0064] In addition, such as Figure 1 and Figure 7 As shown, in this embodiment, there are multiple first elastic elements 230. The multiple first elastic elements 230 are evenly spaced around the center of the metal inner cover 210. The first elastic elements 230 are pressed onto the edge of the plate 212. This can shorten the distance between the first elastic element 230 and the U-shaped groove 211, thereby reducing the loss caused by the leverage effect when the pressure is transmitted to the U-shaped groove 211. This allows the bottom of the U-shaped groove 211 to be subjected to greater pressure, thereby improving the tightness of the fit between the first sealing surface 1101 and the second sealing surface 2101.

[0065] 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.

[0066] In addition, such as Figure 4 , Figure 5 and Figure 9As shown, in this embodiment, the liner 220 is also provided with an annular inner baffle 223 on the side facing the metal inner cover 210. The inner baffle 223 is provided corresponding to the flat plate 212. After the pot lid 200 is closed on the pot body 100, the metal inner cover 210 approaches the inner baffle 223 under the support of the flange 111, so that the inner baffle 223 is close to or even in contact with the top surface of the flat plate 212 and seals it. At this time, the liner 220 and the metal inner cover 210 are partially defined between the inner baffle 223 and the outer wall of the U-shaped groove 211 to form the above-mentioned air duct 400, so that the air duct 400 is located above the rigid sealing area and is arranged circumferentially along the rigid sealing area. When the airflow passes through the air duct 400, it can cool down the wall of the U-shaped groove 211, thereby reducing the temperature of the second sealing surface 2101, and thus achieving the cooling of the rigid sealing area.

[0067] In this embodiment, the air duct 400 communicates with the outside world through the first gap 001, the annular cavity 003, and the second gap 002. Since the second gap 002 is located at the rear of the rice cooker, the air discharged from the air duct 400 through the second gap 002 is kept away from the user to avoid the air blowing directly on the user and affecting the user's experience. At the same time, the discharged air is also kept away from the user's ears to reduce noise perception. Finally, by using the gaps in various parts of the existing rice cooker to form an air outlet channel, the air outlet channel connecting the outside world and the air duct 400 is eliminated, thereby simplifying the structure of the rice cooker and reducing the modification cost. The fan 300 is located in the mounting cavity of the cover 220 on the side away from the metal inner cover 210. The cover 220 is provided with a first vent 224 connecting the air outlet side of the fan 300 and the air duct 400. This design makes it easier to install the air duct 400, and since both the air duct 400 and the fan 300 are located on the lid 200, modifications to the product only require changes to the lid 200, thus reducing modification costs. Secondly, it prevents the fan 300 from being exposed and water from entering during the disassembly and cleaning of the metal inner cover 210, thereby extending the service life of the fan 300. Furthermore, since the side of the liner 220 away from the metal inner cover 210 has a mounting cavity, the fan 300 can be placed inside the mounting cavity without requiring additional space, further reducing the modification costs of the liner 220. In addition, this design allows air to blow downwards from the liner 220, providing cool air. The downward airflow provides better cooling for the inner metal cover 210, and the airflow from above the rigid sealing area ensures a better and more stable formation of the cold end of the second sealing surface 2101, as the lower surface of the inner metal cover 210 is already at a lower temperature than the inner pot 110. Finally, the downward airflow from the liner 220 can also dry any small amount of overflowing steam, so even if a small amount of steam overflows, it will not affect the electronic components or leak into the external environment. Finally, the air inlet side of the fan 300 is more easily positioned away from the heat source of the rice cooker (the heating element located below the inner pot), thus ensuring that the air drawn in from the external environment is cold, thereby improving the cooling effect on the rigid sealing area.

[0068] like Figure 1 and Figure 6 As shown, in this embodiment, the fan 300 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 ventilation port 224, the pot cover 200 also includes an adapter cover 240 disposed on the side of the liner 220 away from the metal inner cover 210. The adapter cover 240 is fastened to the liner 220, and one end of the adapter cover 240 is connected to the air outlet side of the centrifugal fan, and the other end is connected to the first ventilation port 224.

[0069] In addition, the pot lid 200 of this embodiment also includes an outer cover 250, and the fan 300 and the adapter cover 240 are both located between the outer cover 250 and the liner 220. With this design, the fan 300 can be covered and hidden by the outer cover 250 to avoid the fan 300 being exposed and affecting the appearance of the pot lid 200, as well as the problem of water ingress due to exposure. In this embodiment, the outer cover 250 includes an outer cover body 251, a base 252, and a baffle plate 253. The top of the outer cover body 251 is provided with an installation opening, the base 252 passes through the installation opening, and the baffle plate 253 is located on the outside of the outer cover body 251 and fixed on the base 252. The base 252 is provided with a channel 2521. The projection of the baffle plate 253 on the top surface of the outer cover body 251 covers the installation opening. The baffle plate 253 and the top surface of the outer cover body 251 are spaced apart to form a first air inlet 201 between them. The first air inlet 201 is connected to the air inlet side of the centrifugal fan through the channel 2521. This can effectively prevent foreign objects from entering the fan 300 and also improve the appearance of the pot lid 200.

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

[0071] Example 2

[0072] like Figures 10 to 13 As shown, compared with Embodiment 1, the difference in this embodiment is that the air duct 400 in this embodiment includes an upper air duct 410 located above the flange 111 and a lower air duct 420 located below the flange 111. The upper air duct 410 surrounds the outside of the metal inner cover 210, and the liner 220 has a cavity for receiving the metal inner cover 210. The upper air duct 410 is formed between the sidewall of the cavity and the outer periphery of the metal inner cover 210. The inner pot 110 also includes a sidewall 112, the top of which extends outward to form the flange 111. The pot body 100 also includes an outer pot 120, which includes an outer shell 121 and a heat insulation cover 122. 122 is provided with a cavity for accommodating the inner pot 110. The outer shell 121 includes a middle ring 1212 hinged to the liner 220. The middle ring 1212 is provided with a recess 1213. The bottom wall of the recess 1213 is provided with a plurality of support protrusions arranged circumferentially around the cavity. The flange 111 is supported on the support protrusions. The portion of the flange 111 and the bottom wall of the recess located below the flange 111 forms a lower air duct 420 surrounding the outside of the side wall 112. It should be noted that both the upper air duct 410 and the lower air duct 420 are connected to the annular cavity 003 so that the air in the upper air duct 410 and the lower air duct 420 is discharged to the outside through the annular cavity 003 and the second gap 002.

[0073] like Figure 11As shown, in this embodiment, the liner 220 has a fixing cavity 225 on the side away from its hinge. The fixing cavity 225 is located in front of the metal inner cover 210. The fixing cavity 225 has a first cavity wall facing the metal inner cover 210. The first cavity wall extends downward to below the flange 111. The portion of the first cavity wall corresponding to the upper air duct 410 and the lower air duct 420 is provided with a second ventilation port 2251 so that the second ventilation port 2251 communicates with the upper air duct 410 and the lower air duct 420. The top wall of the fixing cavity 225 is provided with a second air inlet 2252 communicating with the outside. The fan 300 is a fan installed in the fixing cavity 225. The fan 300 is located between the second air inlet 2252 and the second ventilation port 2251 so that the outside air flows from the second air inlet 2252 to the second ventilation port 2251. With this design, when the fan 300 is working, cool air from the outside is sent into the upper air duct 410 and the lower air duct 420. As the cool air flows through the upper air duct 410 and the lower air duct 420, it cools the outer periphery of the metal inner cover 210 and the flange 111. This achieves "pincer-style" heat dissipation of the flange 111, thereby increasing the cooling effect of the airflow on the upper and lower sides of the flange 111, and further improving the cooling effect on the rigid sealing area. This ensures the formation of condensate to form a water seal, and also prevents users from being burned when touching the flange 111 while scooping rice. Furthermore, the design of the lower air duct 420 not only cools the rigid sealing area but also dissipates heat from the side wall 112, preventing the rice cooker from sticking to the part of the side wall 112 corresponding to the lower air duct 420. Finally, it also allows the fan 300 to be further away from the heat source of the rice cooker, so that the fan 300 draws in cold air from the second air inlet 2252, thereby improving the cooling effect on the rigid sealing area. Moreover, using the cover 220 as the mounting carrier for the fan 300 facilitates the processing and forming of the fixing cavity 225, thereby reducing the modification cost.

[0074] It is understood that in other embodiments of this utility model, the air duct only includes the upper air duct. In this case, the first cavity wall only needs to extend downward to the flange, and the second vent is located at the part of the first cavity wall corresponding to the upper air duct. With this design, air can be supplied to the upper air duct, and the rigid sealing area can be cooled by the airflow through the upper air duct.

[0075] Example 3

[0076] like Figures 14 to 18As shown, compared with Embodiment 2, the difference in this embodiment is that the fan 300 is located between the insulation cover 122 and the outer shell 121. The outer shell 121 has a third air inlet 1210 and a third ventilation opening 1216 communicating with the air duct 400. The fan 300 operates to create airflow between the third air inlet 1210 and the third ventilation opening 1216. This design keeps the fan 300 away from the user's ears, reducing noise perception. In addition, by utilizing the existing space between the insulation cover 122 and the outer shell 121 to install the fan, full utilization of the space between the insulation cover 122 and the outer shell 121 can be achieved, and the modification cost of the pot body 100 is relatively low.

[0077] Specifically, the outer shell 121 also includes an annular shell 1211, a middle ring 1212 installed on the top of the shell 1211, a third air inlet 1210 located on the shell 1211 and near the rear side of the shell 1211, a recess 1213 for accommodating at least part of the pot lid 200, a bracket 500 between the heat insulation cover 122 and the outer shell 121, a fan 300 fixedly installed on the bracket 500, and the bracket 500 having an air outlet 510. A second extension plate 1214 is connected to the bottom wall of the settling tank 1213, meaning a protective cover 123 is connected to the bottom wall of the settling tank 1213. The protective cover 123 covers the top of the blower 300, and the top of the protective cover 123 is higher than the flange 111. The second extension plate 1214 is formed on the side of the protective cover 123 facing the inner pot 110. The top of the second extension plate 1214 is higher than the flange 111 and lower than the inner side of the liner 220, so that the second extension plate 1214 corresponds to the upper air duct 410 and the lower air duct 420, and the third vent 1216. The third vent 1216 is located on the second extension plate 1214 and is connected to the upper air duct 410 and the lower air duct 420. The third vent 1216 is connected to the air outlet 510. In this way, when the fan 300 is working, the cold air from the outside is sent into the upper air duct 410 and the lower air duct 420 through the third air inlet 1210, the air outlet 510 and the third vent 1216. During the flow of the air in the upper air duct 410 and the lower air duct 420, the air will cool down the rigid sealing area, so that the water vapor in the rigid sealing area will form condensate and achieve water sealing.

[0078] Preferably, the top of the second extension plate 1214 is provided with a radially inwardly extending water-retaining eave, which is located above the third vent 1216. This design prevents water from the top of the protective cover 123 from flowing into the third vent 1216, thereby ensuring the normal operation of the fan 300.

[0079] It is understood that in other embodiments of this utility model, the bottom wall of the settling tank is also provided with an upwardly extending arc-shaped rib, the top of which is higher than the flange. The protective cover is connected to the arc-shaped rib on the side facing the inner pot to form a second extension plate surrounding the outer side of the inner pot and the metal inner cover. This allows all the air to enter the upper and lower air ducts, thereby improving the utilization rate of the air and thus improving the cooling effect on the rigid sealing area.

[0080] It is understood that in other embodiments of this utility model, the bottom wall of the settling tank is set higher than the flange, and in this case, the inner side of the bottom wall of the settling tank is provided with a second extension plate that extends downward, and the second extension plate surrounds the outer side of the inner pot and the metal inner lid.

[0081] Example 4

[0082] like Figures 19 to 21 As shown, compared with Embodiment 3, the difference in this embodiment is that the top of the protective cover 123 in this embodiment is set lower than the flange 111. At this time, the protective cover 123 forms a first extension plate 1215 on the side facing the inner pot. The top of the first extension plate 1215 is lower than the flange 111 so that the first extension plate 1215 corresponds to the lower air duct 420. The first extension plate 1215 is set radially inward from top to bottom. The third vent 1216 is set on the first extension plate 1215 so that the air blown out of the third vent 1216 blows towards the flange 111, thereby improving the cooling effect on the rigid sealing area. In addition, it can also realize heat dissipation of the side wall 112 to avoid the pot sticking phenomenon in the part of the side wall 112 corresponding to the lower air duct 420.

[0083] Preferably, the top of the first extension plate 1215 is provided with a water-retaining eave 124 that extends radially inward. The water-retaining eave 124 is located above the third ventilation opening 1216. This design can prevent water from the top of the protective cover 123 from flowing into the third ventilation opening 1216, thereby ensuring the normal operation of the fan 300.

[0084] It is understood that in other embodiments of this utility model, the bottom wall of the settling tank is also provided with an upwardly extending arc-shaped rib, the top of which is lower than the flange. The protective cover is connected to the arc-shaped rib on the side facing the inner pot to form a first extension plate surrounding the outer side of the inner pot. This allows all the air to enter the downdraft duct, thereby improving the utilization rate of the air and thus improving the cooling effect on the rigid sealing area.

[0085] It is understood that in other embodiments of this utility model, the bottom wall of the settling tank is set lower than the flange all around. In this case, the inner side of the bottom wall of the settling tank is provided with a first extension plate that extends downward, and the first extension plate surrounds the outer side of the inner pot.

[0086] Example 5

[0087] like Figures 22 to 23As shown, compared with Embodiment 1, the difference in this embodiment is that the side wall 112 of the inner pot 110 includes a constricted neck 1121 and a flared portion 1122 located above the constricted neck 1121. The inner side of the flared portion 1122 forms a first sealing surface 1101. The first sealing surface 1101 is located close to the flange. The metal inner cover 210 is provided with a sealing recess 213 recessed towards the inner pot 110. The outer peripheral surface of the sealing recess 213 forms a second sealing surface 2101. The second sealing surface 2101 and the first sealing surface 1101 are fitted together to form a rigid sealing area.

[0088] At this time, the top surface of the sealed platform 213 is provided with an annular wind baffle 2131. The wind baffle 2131, the side wall of the sealed platform 213 and the cover 220 form an air duct 400. The fan 300 can be set with reference to Embodiment 1. The fan 300 is used to send the outside air into the air duct 400 so that the rigid sealing area is cooled when the air flows through the air duct.

[0089] It should be noted that, in this embodiment, based on the rigid sealing area formed by the sealing platform 213 and the first sealing surface 1101, the air duct can also be set up in accordance with embodiments two to four, so that the wind baffle can be omitted, which will not be described in detail here.

[0090] 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. A rice cooker, comprising a pot body having an inner pot and a lid having a metal inner lid, wherein the inner pot has a first sealing surface and the metal inner lid has a second sealing surface, the first sealing surface and the second sealing surface being fitted together to form an annular rigid sealing area, characterized in that, It also includes a fan and an air duct that connects to the outside. The air duct is arranged circumferentially along the rigid sealing area. The fan is used to send outside air into the air duct so that the rigid sealing area is cooled when the air flows through the air duct.

2. The rice cooker as described in claim 1, characterized in that, The pot lid also includes a liner, and the inner metal cover is installed on the liner. The inner metal cover and the liner cooperate to form the air duct. The fan is located on the side of the liner away from the inner cover. The liner is provided with a first ventilation opening connecting the air outlet side of the fan and the air duct.

3. The rice cooker as described in claim 2, characterized in that, The pot lid also includes an outer cover, and the fan is located between the outer cover and the liner. The outer cover has a first air inlet, the air inlet side of the fan is connected to the first air inlet, and the air outlet side of the fan is connected to the first ventilation opening.

4. The rice cooker as described in claim 1, characterized in that, The inner pot includes a side wall and a flange extending outward from the top of the side wall. The first sealing surface is located on the top surface of the flange or on the inner side of the side wall near the flange. The air duct includes an upper air duct located above the flange and / or a lower air duct located below the flange. The upper air duct surrounds the outside of the metal inner cover, and the lower air duct surrounds the outside of the side wall.

5. The rice cooker as described in claim 4, characterized in that, The pot lid also includes a liner, and the metal inner cover is installed on the liner. The liner has a fixed cavity. The cavity wall of the fixed cavity has a second air inlet communicating with the outside and a second vent communicating with the air duct. The fan is installed in the fixed cavity to cause the outside air to flow through the second air inlet to the second vent.

6. The rice cooker as described in claim 4, characterized in that, The pot body also includes an outer pot, which includes an outer shell and a heat insulation cover. The heat insulation cover has a cavity for accommodating the inner pot. The fan is provided between the heat insulation cover and the outer shell. The outer shell has a third air inlet and a third ventilation opening connected to the air duct. The fan operates to create airflow between the third air inlet and the third ventilation opening.

7. The rice cooker as described in claim 6, characterized in that, The outer casing includes a housing and a middle ring mounted on the top of the housing. The third air inlet is located on the housing. The middle ring has a recess for accommodating at least part of the pot lid. The bottom wall of the recess is connected to a first extension plate corresponding to the downdraft. The third vent is located on the first extension plate. Alternatively, the bottom wall of the settling tank is connected to a second extension plate corresponding to the upper and lower air ducts, and the third ventilation opening is located on the second extension plate and communicates with the upper and lower air ducts.

8. The rice cooker as described in claim 7, characterized in that, The top of the first extension plate is provided with a water-retaining eave that extends radially inward, and the water-retaining eave is located above the third ventilation opening; the top of the second extension plate is provided with a water-retaining eave that extends radially inward, and the water-retaining eave is located above the third ventilation opening.

9. 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, and the first elastic element applies pressure to the inner metal cover.

10. The rice cooker as described in claim 1, characterized in that, The inner pot has an outwardly extending flange at its opening, the top surface of which forms the first sealing surface. The outer edge of the metal inner cover protrudes downward to form a U-shaped groove, and the bottom surface of the U-shaped groove forms the second sealing surface.

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