Cooking utensil

Abstract

The utility model discloses a cooking utensil which comprises a pot body and an inner container arranged in the pot body, the pot body comprises a heat preservation cover, a heating disc located below the inner container is arranged in the heat preservation cover, the heating disc makes contact with the inner container to heat the inner container, and the cooking utensil further comprises a cooling fan arranged at the bottom of the heat preservation cover. A heat dissipation air channel is formed between the peripheral side of the heating disc and the heat preservation cover, so that airflow of the heat dissipation fan is blown to the peripheral direction of the bottom of the inner container; and an exhaust outlet is formed between the turned-over edge of the inner container and the opening edge of the pot body. In the air cooling process of the inner container, air flow enters the heat preservation cover from the bottom of the heat preservation cover, firstly reaches the heating disc, makes contact with the heating disc and cools the heating disc, further flows upwards through the heat dissipation air channel between the heating disc and the heat preservation cover and then surrounds the bottom of the inner container. In this way, the cold air flow cools the heating disc firstly and then cools the side portion of the inner container, and the problem that the cooling efficiency of the inner container is low due to the fact that the heating disc continuously transfers heat to the inner container in the cooling process can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen appliances, and in particular relates to a cooking utensil. Background Art

[0002] Existing cooking utensils, such as electric rice cookers and pressure cookers, generally include a pot body and a pot cover. The pot body is provided with an inner pot and a heating device for heating the inner pot. The inner pot is generally made of metal. When the heating device is powered on, it can transfer heat to the inner pot to cook the rice in the inner pot. However, such cooking utensils may stick to the pot during the cooking process, making it difficult to clean the inner pot after the meal, which deteriorates the user experience.

[0003] In order to solve this technical problem, the applicant has previously applied for a moist film 0 coating technology, which sets a cooling fan on the pot body. The cooling fan operates to form a flowing airflow to cool the inner pot, so that when the high-temperature steam inside the inner pot comes into contact with the inner pot, it will quickly condense and liquidize into condensed water, forming a layer of water film between the food and the inner wall of the inner pot, preventing the food from sticking to the inner wall of the inner pot and achieving a non-stick effect.

[0004] However, when the heating device uses a heating plate, the inner pot is heated by the contact between the heating plate and the inner pot, and the heating plate will accumulate a large amount of heat. Even after the heating plate is powered off and stops heating, it will continue to transfer heat to the inner pot, resulting in the inner pot being unable to cool down quickly. As a result, the final non-stick effect of the model using a heating plate for heating is slightly worse than that of the solution using an IH coil plate as the heating device, and further improvement is needed. Utility Model Content

[0005] The utility model provides a cooking utensil to solve the problem that the cooking utensil heated by a heating plate has a poor cooling effect on an inner pot, and the non-stick effect can be further improved.

[0006] The technical solution adopted by the utility model is:

[0007] A cooking utensil comprises a pot body and an inner pot placed in the pot body, the pot body comprises a heat-insulating cover, a heating plate located below the inner pot is arranged in the heat-insulating cover, the heating plate contacts the inner pot to heat the inner pot, the cooking utensil further comprises a heat-dissipating fan arranged at the bottom of the heat-insulating cover, a heat-dissipating air duct is formed between the peripheral side of the heating plate and the heat-insulating cover, so that the airflow of the heat-dissipating fan blows toward the bottom peripheral direction of the inner pot; an exhaust port is provided between the flange of the inner pot and the edge of the pot body.

[0008] The cooking utensil of the present invention also has the following additional technical features:

[0009] A guide piece is also provided between the heating plate and the heat-insulating cover. The guide piece is bent to form a guide surface on a side facing the heat dissipation fan. The guide surface is used to guide the airflow of the heat dissipation fan to the heat dissipation duct.

[0010] The bottom wall of the heat preservation cover is provided with a mounting sunken platform protruding downward, the cooling fan is fixed on the mounting sunken platform, and the side wall of the mounting sunken platform is provided with a guiding transition surface, and the guiding transition surface cooperates with the guide surface to form a guide channel.

[0011] The heat dissipation fan is coaxially arranged with the heating plate.

[0012] The side wall of the heat-insulating cover is provided with an outwardly protruding wind-guiding protrusion, and the side of the wind-guiding protrusion facing the inner liner has a reflecting surface.

[0013] The reflective surface has a first extension section and a second extension section located above the first extension section, and a lower edge of the second extension section is not lower than an upper edge of the heating plate.

[0014] The cooling fan is located on one side of the heating plate. Wind shielding ribs are also provided between the heating plate and the bottom wall of the heat preservation cover. The wind shielding ribs extend along the circumference of the heating plate so that the airflow of the cooling fan is guided through the wind shielding ribs to enter the cooling air duct and surround the heating plate.

[0015] The cooking appliance is also provided with an air inlet channel, which has an inlet end connected to the cooling fan and an outlet end connected to the interior of the heat preservation cover, and the outlet end is higher than the inlet end; or, the outlet end is provided with a drainage rib extending upwardly inclined.

[0016] The heat preservation cover is provided with an air inlet connected to the cooling fan, and the air inlet is provided with guide ribs, which extend upwardly and obliquely so that the airflow of the cooling fan is guided through the guide ribs to form a rotating airflow and enter the cooling air duct.

[0017] The side wall of the heat-insulating cover comprises an extension section and a diameter-reducing section located below the extension section, the diameter of the diameter-reducing section is smaller than the diameter of the extension section, and the heat dissipation duct is formed between the diameter-reducing section and the heating plate.

[0018] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0019] 1. In the utility model, the heat dissipation fan is arranged at the bottom of the heat preservation cover, so in the process of air cooling the inner pot, the airflow will first reach the heating plate from the bottom of the heat preservation cover, contact the heating plate to cool it, and further flow upward through the heat dissipation air duct between the heating plate and the heat preservation cover, and then contact the inner pot to cool the inner pot, so that the cold airflow first cools the heating plate, so that the temperature of the heating plate can be quickly reduced, and at the same time, the temperature of the inner pot with the highest temperature (the bottom of the inner pot) is also cooled, and then the side of the inner pot is cooled, which can avoid the problem that the heating plate continuously transfers heat to the bottom of the inner pot during the cooling process, resulting in low cooling efficiency of the inner pot. In addition, by arranging an exhaust port between the flange of the inner pot and the edge of the pot body, the airflow flowing upward from the bottom finally flows out of the exhaust port at the top, so that the airflow can flow through various areas of the inner pot from bottom to top, and achieve full contact with the inner pot, thereby cooling various areas of the inner pot, greatly improving the cooling effect and uniformity of the inner pot.

[0020] In addition, since the bottom of the inner tank is in contact with the heating plate, the heat is concentrated at the bottom of the inner tank, and the heat transfer route is from the bottom of the inner tank to the upper side, so that the temperature of the bottom of the inner tank is higher than the temperature of the side. In the utility model, the airflow blown by the cooling fan flows upward from the bottom of the inner tank and flows out from the upper exhaust port, which is more consistent with the heat transfer route. At the same time, the cooling priority of the bottom of the inner tank is improved, so that it contacts the cold air flow before the side, so that the bottom of the inner tank will start to cool down first, and the cold air flow contacts the bottom of the inner tank first to cool it. At this time, the temperature difference between the cold air flow and the inner tank is large, and the heat exchange efficiency is higher, so that the bottom of the inner tank can be cooled quickly. As the airflow rises, even if the temperature of the airflow rises slightly, it can still form a better cooling effect on the side of the inner tank, thereby improving the uniformity of the cooling effect on the bottom and side of the inner tank, and helping to form a uniform water film on the inner wall of the inner tank to ensure the non-stick effect in each area. Not only that, during the cooking process, food is more concentrated at the bottom of the inner pot, and the amount of food is less towards the top of the inner pot. Therefore, the airflow blown by the cooling fan first contacts the bottom wall of the inner pot to cool it down, which can ensure the timeliness and uniformity of the formation of water film in the bottom area of ​​the inner pot, and prevent food from sticking to the pot to a greater extent.

[0021] 2. As a preferred embodiment of the present invention, a guide member is further provided between the heating plate and the heat preservation cover, and the guide member is bent to form a guide surface on the side facing the heat dissipation fan, and the guide surface is used to guide the airflow of the heat dissipation fan to the heat dissipation duct. The guide member is provided with a guide surface on the side facing the heat dissipation fan, and the airflow blown out by the heat dissipation fan will first contact the guide surface, and then diffuse and flow toward the periphery of the heating plate and enter the heat dissipation duct under the guidance of the guide surface, thereby surrounding the periphery of the heating plate and fully cooling the heating plate, and then the airflow continues to flow upward, contacting the side wall of the inner pot to cool the inner pot, further improving the cooling and non-stick effects.

[0022] 3. As a preferred embodiment of the present invention, the side wall of the heat preservation cover is provided with an outwardly protruding wind guide protrusion, and the side of the wind guide protrusion facing the inner liner has a reflective surface. The wind guide protrusion forms a groove on the inner wall of the heat preservation cover, and the reflective surface is located on the inner wall of the groove. When the airflow flowing toward the inside of the groove contacts the reflective surface, it changes its flow direction and flows toward the side wall of the inner liner, so that more cold airflow contacts the inner liner, cools the inner liner, and improves the cooling efficiency of the inner liner.

[0023] 4. As a preferred embodiment of the present invention, the cooling fan is located on one side of the heating plate, and wind shield ribs are provided between the heating plate and the bottom wall of the heat preservation cover, and the wind shield ribs extend along the circumference of the heating plate, so that the airflow of the cooling fan is guided by the wind shield ribs to enter the cooling air duct and surround the heating plate. When the airflow blown out by the cooling fan enters the heat preservation cover, it is blocked by the wind shield ribs and cannot reach the bottom of the heating plate, but flows along the extension direction of the wind shield ribs (the circumference of the heating plate), and then quickly reaches the other side from one side of the heating plate, so that the cooling effects on both sides of the heating plate are closer, and it also helps the cold airflow to form a spiral rising airflow, which then surrounds the heating plate and the inner pot, and improves the cooling effect on the heating plate and the inner pot.

[0024] 5. As a preferred embodiment of the present invention, the heat preservation cover is provided with an air inlet connected to the cooling fan, and the air inlet is provided with guide ribs, and the guide ribs extend obliquely upward so that the airflow of the cooling fan is guided by the guide ribs to form a rotating airflow and enter the cooling air duct. The heat preservation cover is provided with guide ribs at the air inlet, and after the airflow blown by the cooling fan enters the heat preservation cover from the air inlet, it is guided by the guide ribs to form a rotating airflow, and the airflow rises in a spiral, rotating around the center of the heating plate and the inner tank while flowing upward, thereby extending the flow path of the airflow, increasing the contact time of the cold airflow with the heating plate and the inner tank, and improving the cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0026] Figure 1 A cross-sectional view of the cooking utensil in one embodiment of the utility model;

[0027] Figure 2 for Figure 1 A magnified view of area A, where arrows indicate the direction of air flow;

[0028] Figure 3 A cross-sectional view of the heat preservation cover in one embodiment of the utility model;

[0029] Figure 4 for Figure 3 A schematic diagram of the structure of the heat preservation cover;

[0030] Figure 5 This is a structural explosion view of a partial area of ​​the cooking utensil in one embodiment of the utility model;

[0031] Figure 6 It is a cross-sectional view of the cooking utensil in another embodiment of the utility model, wherein the inner pot is not shown;

[0032] Figure 7 for Figure 6 A schematic diagram of the structure of a portion of the cooking appliance described in;

[0033] Figure 8 This is a schematic structural diagram of the cooking utensil in another embodiment of the utility model;

[0034] Fig. 9 for Figure 8 A schematic diagram of the structure of a partial area of ​​the cooking utensil described in FIG.

[0035] in:

[0036] 1 pot body; 11 heating plate; 111 wind shielding ribs; 12 exhaust vent;

[0037] 2 heat preservation cover; 21 air guide protrusion; 22 extension section; 23 diameter reduction section; 24 heat dissipation duct; 25 reflection surface; 251 first extension section; 252 second extension section; 26 installation sink; 261 guide transition surface; 27 drainage rib position; 28 air inlet;

[0038] 3 liner;

[0039] 4 cooling fan; 41 air inlet channel; 411 inlet end; 412 outlet end;

[0040] 5 guide member; 51 guide surface; 52 guide channel. DETAILED DESCRIPTION

[0041] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0042] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0043] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0046] like Figure 1 , Figure 6 and Figure 8 As shown, a cooking utensil comprises a pot body 1 and an inner pot 3 placed in the pot body 1, the pot body 1 comprises a heat preservation cover 2, a heating plate 11 is arranged in the heat preservation cover 2 and is located below the inner pot 3, the heating plate 11 is in contact with the inner pot 3 to heat the inner pot 3, the cooking utensil further comprises a heat dissipation fan 4 arranged at the bottom of the heat preservation cover 2, a heat dissipation duct 24 is formed between the peripheral side of the heating plate 11 and the heat preservation cover 2, so that the airflow of the heat dissipation fan 4 blows toward the bottom circumference of the inner pot 3; an exhaust port 12 is provided between the flange of the inner pot 3 and the edge of the pot body 1.

[0047] It should be noted that the present invention does not limit the shape of the heating plate 11 and the formation method of the heat dissipation duct 24. In one embodiment, the heating plate 11 is a flat plate, and the side thereof facing the inner pot 3 is a plane. The inner pot 3 is placed on the plane, and the bottom wall of the inner pot 3 is in contact with the plane. In this embodiment, the heat dissipation duct 24 is formed between the outer edge of the heating plate 11 and the inner wall of the heat preservation cover 2.

[0048] In another embodiment, if Figure 1 As shown, the edge of the heating plate 11 has a bent portion that bends upward, and the side facing the inner pot 3 is a curved surface that matches the shape of the inner pot 3. When the inner pot 3 is placed on the heating plate 11, the bottom wall of the inner pot 3 contacts the heating plate, and part of the side wall of the inner pot 3 also contacts the heating plate 11. In this embodiment, the heat dissipation duct 24 is formed between the bent portion and the inner wall of the heat preservation cover 2, and between the edge of the heating plate 11 and the heat preservation cover 2.

[0049] The bottom in the "cooling fan 4 arranged at the bottom of the heat preservation cover 2" may refer to the bottom of the heat preservation cover 2, or may refer to the portion located below half the height of the heat preservation cover. The cooling fan 4 may be inside the heat preservation cover 2 or outside the heat preservation cover 2, and is not limited here.

[0050] In the utility model, the heat dissipation fan 4 is arranged at the bottom of the heat preservation cover 2. Therefore, in the process of air cooling the inner liner 3, the air flow will first reach the heating plate 11 from the bottom of the heat preservation cover 2, contact the heating plate 11 to cool it, and further flow upward through the heat dissipation duct 24 between the heating plate 11 and the heat preservation cover 2, and then contact the inner liner 3 to achieve cooling of the inner liner 3. In this way, the cold air flow first cools the heating plate 11, so that the temperature of the heating plate 11 can be quickly reduced. At the same time, the highest temperature position of the inner liner 3 (the bottom of the inner liner) is also cooled, and then the side of the inner liner 3 is cooled, which can avoid the problem of low cooling efficiency of the inner liner caused by the heating plate 11 continuously transferring heat to the bottom of the inner liner during the cooling process. Furthermore, by providing an exhaust port 12 between the flange of the inner pot 3 and the edge of the pot body 1, the airflow flowing upward from the bottom eventually flows out of the exhaust port at the top, so that the airflow can flow through various areas of the inner pot from bottom to top and achieve full contact with the inner pot, thereby cooling various areas of the inner pot 3, greatly improving the cooling effect and uniformity of the inner pot.

[0051] In addition, since the bottom of the inner tank 3 is in contact with the heating plate, the heat is concentrated at the bottom of the inner tank, and the heat transfer route is from the bottom of the inner tank to the upper side, so that the temperature of the bottom of the inner tank is higher than the temperature of the side. In the utility model, the airflow blown by the cooling fan 4 flows upward from the bottom of the inner tank and flows out from the upper exhaust port 12, which is more consistent with the heat transfer route, and at the same time improves the priority of cooling the bottom of the inner tank, so that it contacts the cold air flow before the side, so that the bottom of the inner tank 3 will start to cool down first, and the cold air flow contacts the bottom of the inner tank 3 first to cool it. At this time, the temperature difference between the cold air flow and the inner tank 3 is large, and the heat exchange efficiency is higher, so that the bottom of the inner tank can be cooled quickly. As the airflow rises, even if the temperature of the airflow rises slightly, it can still form a better cooling effect on the side of the inner tank 3, thereby improving the uniformity of the cooling effect on the bottom and side of the inner tank, and helping to form a uniform water film on the inner wall of the inner tank to ensure the non-stick effect of each area. Moreover, during the cooking process, the food is more concentrated at the bottom of the inner pot 3, and the amount of food is less towards the top of the inner pot. Therefore, the airflow from the cooling fan 4 first contacts the bottom wall of the inner pot to cool it down, which can ensure the timeliness and uniformity of the water film formation in the bottom area of ​​the inner pot, and prevent the food from sticking to the pot to a greater extent.

[0052] In addition, the cooling fan 4 is arranged at the bottom of the insulation cover 2. Compared with the method of air intake on one side of the insulation cover 2 and air exhaust on the other side, it can significantly reduce the temperature difference on both sides of the inner liner 3, making the cooling effect of each circumferential area of ​​the inner liner 3 closer, thereby improving the cooling uniformity.

[0053] Preferably, the rim of the pot body 1 is provided with a plurality of support protrusions that are arranged at intervals and protrude upward, and the flange of the inner pot 3 is placed against the support protrusions, thereby forming the exhaust port 12 between two of the support protrusions. Alternatively, the pot body 1 supports the inner pot 3 through the heating plate 11, and when the inner pot 3 is placed on the heating plate 11, the flange of the inner pot 3 is higher than the rim of the pot body 1, thereby naturally forming the exhaust port 12.

[0054] As a preferred embodiment of the present invention, Figure 1 As shown, a guide member 5 is also provided between the heating plate 11 and the heat preservation cover 2 , and the guide member 5 is bent to form a guide surface 51 on the side facing the cooling fan 4 , and the guide surface 51 is used to guide the airflow of the cooling fan 4 to the cooling air duct 24 .

[0055] The guide member 5 is provided with a guide surface 51 on the side facing the heat dissipation fan 4. The airflow blown out by the heat dissipation fan 4 will first contact the guide surface 51, and then diffuse and flow toward the periphery of the heating plate 11 and enter the heat dissipation duct 24 under the guidance of the guide surface 51, thereby surrounding the periphery of the heating plate 11 and sufficiently cooling the heating plate 11. Then, the airflow continues to flow upward, contacting the side wall of the inner pot 3 to cool the inner pot 3, thereby further improving the cooling and non-stick effects.

[0056] Specifically, Figure 1 , Figure 5 As shown, the guide member 5 is a plate-like structure, which can be fixed to the heating plate 11 by means of screws, snaps, etc. or formed integrally with the heating plate 11, or can be fixed to the heat preservation cover 2 or formed integrally with the heat preservation cover 2, which is not limited here.

[0057] Furthermore, if Figure 1 As shown, the heat dissipation fan 4 is coaxially arranged with the heating plate 11 .

[0058] like Figure 1As shown, the heat dissipation fan 4, the guide member 5 and the heating plate 11 are all coaxially arranged, so that the heat dissipation fan 4 and the guide member 5 are located at the center of the heating plate 11, and the guide surface 51 is a structure with a low center and a high edge, so that the airflow of the heat dissipation fan 4 flows along the guide surface 51 from the center to the edge, and the flow direction gradually changes to upward flow, thereby helping the cold airflow to surround the heating plate 11 and the inner tank 3, thereby improving the cooling effect.

[0059] The guide surface 51 may be a circular arc surface as shown in the figure, or an inclined surface, or an irregular curved surface, etc., as long as it can guide the airflow at the center to flow toward the periphery and upward, and is not limited here.

[0060] Of course, the heat dissipation fan 4 may also be disposed eccentrically to the heating plate 11 , and the position of the air guide member 5 is disposed corresponding to the heat dissipation fan 4 .

[0061] Preferably, if Figure 1 , Figure 3 , Figure 4 As shown, the bottom wall of the thermal insulation cover 2 is provided with a mounting sink 26 protruding downward, the cooling fan 4 is fixed to the mounting sink 26, and the side wall of the mounting sink 26 is provided with a guide transition surface 261, and the guide transition surface 261 cooperates with the guide surface 51 to form a guide channel 52.

[0062] The installation of the installation sink 26 increases the space between the bottom of the inner liner 3 and the heat preservation cover 2, leaving enough installation space for the cooling fan 4, facilitating assembly and reducing the difficulty of installation. At the same time, the side wall of the installation sink 26 is provided with a guide transition surface 261, which can further guide the airflow blown out by the cooling fan 4. The airflow first flows in the guide channel 52 surrounded by the guide transition surface 261 and the guide surface 51, and enters the cooling air duct 24 through the dual guidance of the guide surface 51 and the guide transition surface 261.

[0063] The guide transition surface 261 may be Figure 3 The inclined surface shown in , may also be an arc surface, etc., which is not limited here.

[0064] In addition, the present embodiment does not limit the type and installation position of the cooling fan 4. For example, the cooling fan 4 may be an axial flow fan, that is, the air outlet direction of the cooling fan 4 is vertically upward, toward the heating plate 11. After the upward airflow contacts the guide member 5 above, it flows outwards into the cooling air duct 24 under the guidance of the guide surface 51. The cooling fan 4 may be fixed in the installation sink 26, or may be installed as shown in FIG. Figure 1As shown, it is fixed below the mounting sink 26 , and an opening is provided on the bottom wall of the mounting sink 26 to connect the cooling fan 4 with the interior of the heat preservation cover 2 .

[0065] For another example, the cooling fan 4 is a centrifugal fan, that is, the cooling fan 4 discharges air horizontally in all directions. In this case, the cooling fan 4 can be arranged inside the mounting sink 26. Even if the cooling fan 4 discharges air horizontally, the airflow will contact the side wall of the mounting sink 26, and will be guided by the guide transition surface 261 to flow obliquely upward and enter the cooling air duct 24.

[0066] As a preferred embodiment of the present invention, Figure 1 , Figure 2 As shown, the side wall of the heat-insulating cover 2 is provided with an outwardly protruding wind guide protrusion 21 , and the side of the wind guide protrusion 21 facing the inner liner 3 has a reflecting surface 25 .

[0067] The air guide protrusion 21 forms a groove on the inner wall of the heat preservation cover 2, and the reflecting surface 25 is located on the inner wall of the groove. Figure 2 As shown, when the airflow flowing toward the inside of the groove contacts the reflecting surface 25, the flow direction will be changed and then flow toward the side wall of the inner liner 3, so that more cold airflow contacts the inner liner 3, cools down the inner liner 3, and improves the cooling efficiency of the inner liner 3.

[0068] The cold air flow is guided to flow around in the heat dissipation duct 24, and then contacts the inner wall of the heat preservation cover 2. Through the reflection of the reflecting surface 25, the flow direction of the cold air flow can be further changed to flow toward the side wall of the inner liner 3, and then contacts the inner liner 3 for cooling.

[0069] Furthermore, if Figure 2 As shown, the reflective surface 25 has a first extension section 251 and a second extension section 252 located above the first extension section 251 , and the lower edge of the second extension section 252 is not lower than the upper edge of the heating plate 11 .

[0070] The second extension section 252 is not lower than the upper edge of the heating plate 11 , which can ensure that after the airflow is reflected by the second extension section 252 on the reflecting surface 25 , it will directly flow to the side wall of the inner pot 3 and then contact and cool with the side wall of the inner pot 3 .

[0071] As a preferred embodiment of the present invention, Figure 6As shown, the heat dissipation fan 4 is located on one side of the heating plate 11, and a wind shield rib 111 is provided between the heating plate 11 and the bottom wall of the heat preservation cover 2, and the wind shield rib 111 extends along the circumference of the heating plate 11 so that the airflow of the heat dissipation fan 4 is guided through the wind shield rib 111 to enter the heat dissipation air duct 24 and surround the heating plate 11.

[0072] When the airflow blown by the cooling fan 4 enters the heat preservation cover 2, it is blocked by the wind shield ribs 111 and cannot reach the bottom of the heating plate 11, but flows along the extension direction of the wind shield ribs 111 (the circumferential direction of the heating plate 11), and then quickly reaches the other side from one side of the heating plate 11, so that the cooling effects on both sides of the heating plate 11 are closer, and it also helps the cold airflow to form a spiral rising airflow, which then surrounds the heating plate 11 and the inner tank 3, thereby improving the cooling effect on the heating plate 11 and the inner tank 3.

[0073] In this embodiment, the air outlet direction of the cooling fan 4 is horizontal, and it can be perpendicular to the wind shield surface of the wind shield rib 111, or it can be tangent to the wind shield surface. The airflow enters the heat preservation cover 2 horizontally from one side of the heating plate 11, and is guided by the wind shield rib 111 to flow quickly to the other side, thereby surrounding the heating plate 11 and the inner pot 3.

[0074] It should be noted that the wind shield 111 can be integrally formed with the heating plate 11 or the heat-insulating cover 2, that is, the heating plate 11 or the heat-insulating cover 2 has an extended convex rib to form the wind shield 111, or can be separately formed with the heating plate 11 or the heat-insulating cover 2 and subsequently fixed to the heating plate 11 or the heat-insulating cover 2. Of course, the wind shield 111 can also be an independent component, which is neither fixedly connected to the heating plate 11 nor fixedly connected to the heat-insulating cover 2, and is not limited here.

[0075] Furthermore, if Figure 6 , Figure 7 As shown, the cooking appliance is also provided with an air inlet channel 41, and the air inlet channel 41 has an inlet end 411 connected to the cooling fan 4, and an outlet end 412 connected to the interior of the heat preservation cover 2, and the outlet end 412 is higher than the inlet end 411, or the outlet end 412 is provided with a drainage rib extending upwardly inclined.

[0076] By raising the outlet end 412 of the air inlet channel 41 to make it tilted upward, or by providing the guide ribs at the outlet end 412, the direction in which the cold airflow enters the thermal insulation cover 2 is tilted upward, which is more conducive to forming a rotating upward airflow, so that the airflow surrounds the heating plate 11 and the outer periphery of the inner tank 3.

[0077] In this embodiment, the cooling fan 4 can be arranged outside the heat preservation cover 2, and the airflow blown out by it can be guided into the heat preservation cover 2 through the air inlet channel 41, thereby saving the internal space of the heat preservation cover 2, optimizing the spatial layout inside the heat preservation cover 2, and avoiding interference between the cooling fan 4 and other components.

[0078] In a preferred embodiment, Figure 8 , Fig. 9 As shown, the heat preservation cover 2 is provided with an air inlet 28 connected to the cooling fan 4, and the air inlet 28 is provided with guide ribs, which extend upward at an angle so that the airflow of the cooling fan 4 is guided through the guide ribs to form a rotating airflow and enter the cooling air duct 24.

[0079] The heat preservation cover 2 is provided with guide ribs at the air inlet 28. After the airflow blown by the cooling fan 4 enters the heat preservation cover 2 from the air inlet 28, it is guided by the guide ribs to form a rotating airflow. The airflow rises in a spiral shape, rotating around the center of the heating plate 11 and the inner tank 3 while flowing upward, thereby extending the flow path of the airflow, increasing the contact time of the cold airflow with the heating plate 11 and the inner tank 3, and improving the cooling efficiency.

[0080] like Figure 8 As shown, in this embodiment, the heat dissipation fan 4 can be eccentrically arranged with the heat preservation cover 2 and the heating plate 11 to further facilitate the formation of the rotating airflow. Of course, the heat dissipation fan 4 can also be coaxially arranged with the heat preservation cover 2, which is not limited here.

[0081] Preferably, if Figure 1 , Figure 3 As shown, the side wall of the heat preservation cover 2 includes an extension section 22 and a diameter reduction section 23 located below the extension section 22 , the diameter of the diameter reduction section 23 is smaller than the diameter of the extension section 22 , and the heat dissipation duct 24 is formed between the diameter reduction section 23 and the heating plate 11 .

[0082] The diameter of the reduced diameter section 23 is smaller than the diameter of the extended section 22. The extended section 22 corresponds to the side wall of the inner tank 3. The heat dissipation duct 24 is formed by the reduced diameter section 23 and the heating plate 11, so that the width of the heat dissipation duct 24 is small, the air pressure is large, the flow speed of the airflow in the heat dissipation duct 24 is fast, the space between the side wall of the inner tank 3 and the extended section 22 is large, the flow speed of the airflow is slow, and the contact time between the airflow and the surface of the inner tank 3 can be extended, the heat exchange effect is improved, and then the cooling effect of the inner tank 3 is improved.

[0083] Specifically, Figure 3As shown, the diameter-reducing section 23 is tilted downward from top to bottom, so that the diameter of the space enclosed by the diameter-reducing section 23 gradually decreases from top to bottom, thereby forming a guiding slope on the inner surface of the diameter-reducing section 23 to guide the airflow upward.

[0084] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0085] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0086] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A cooking utensil, comprising a pot body and an inner pot placed in the pot body, wherein the pot body comprises a heat preservation cover, a heating plate located below the inner pot is arranged in the heat preservation cover, and the heating plate contacts the inner pot to heat the inner pot, characterized in that: The cooking utensil also includes a cooling fan arranged at the bottom of the heat-insulating cover, and a cooling air duct is formed between the peripheral side of the heating plate and the heat-insulating cover so that the airflow of the cooling fan blows toward the bottom circumference of the inner pot; an exhaust port is provided between the flange of the inner pot and the edge of the pot body.

2. The cooking device according to claim 1, characterized in that: A guide piece is also provided between the heating plate and the heat-insulating cover. The guide piece is bent to form a guide surface on a side facing the heat dissipation fan. The guide surface is used to guide the airflow of the heat dissipation fan to the heat dissipation duct.

3. The cooking device according to claim 2, characterized in that: The bottom wall of the heat preservation cover is provided with a mounting sunken platform protruding downward, the cooling fan is fixed on the mounting sunken platform, and the side wall of the mounting sunken platform is provided with a guiding transition surface, and the guiding transition surface cooperates with the guide surface to form a guide channel.

4. The cooking device according to claim 2, characterized in that: The heat dissipation fan is coaxially arranged with the heating plate.

5. The cooking device according to claim 1, characterized in that: The side wall of the heat-insulating cover is provided with an outwardly protruding wind-guiding protrusion, and the side of the wind-guiding protrusion facing the inner liner has a reflecting surface.

6. The cooking device according to claim 5, characterized in that: The reflective surface has a first extension section and a second extension section located above the first extension section, and a lower edge of the second extension section is not lower than an upper edge of the heating plate.

7. The cooking device according to claim 1, characterized in that: The cooling fan is located on one side of the heating plate. Wind shielding ribs are also provided between the heating plate and the bottom wall of the heat preservation cover. The wind shielding ribs extend along the circumference of the heating plate so that the airflow of the cooling fan is guided through the wind shielding ribs to enter the cooling air duct and surround the heating plate.

8. The cooking device according to claim 7, characterized in that: The cooking appliance is also provided with an air inlet channel, which has an inlet end connected to the cooling fan and an outlet end connected to the interior of the heat preservation cover, wherein the outlet end is higher than the inlet end, or the outlet end is provided with a drainage rib extending upwardly inclined.

9. The cooking device according to claim 1, characterized in that: The heat preservation cover is provided with an air inlet connected to the cooling fan, and the air inlet is provided with guide ribs, which extend upwardly and obliquely so that the airflow of the cooling fan is guided through the guide ribs to form a rotating airflow and enter the cooling air duct.

10. The cooking device according to claim 1, characterized in that: The side wall of the heat-insulating cover comprises an extension section and a diameter-reducing section located below the extension section, the diameter of the diameter-reducing section is smaller than the diameter of the extension section, and the heat dissipation duct is formed between the diameter-reducing section and the heating plate.

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