A cooking appliance

Abstract

The utility model discloses a kind of cooking utensils, including pot body, pot body includes the heat preservation cover with accommodating cavity and the inner container placed in accommodating cavity, pot body is further provided with cooling assembly, heat preservation cover is opened with air inlet, cooling assembly includes cooling fan and cooling air duct, cooling air duct has with cooling fan communication's inlet end, and with the outlet end of air inlet communication, inlet end and outlet end between being provided with guide section, the inner wall of guide section is provided with flow guide camber to make at least part airflow enter accommodating cavity along the tangent direction of inner container, cooling fan has the air outlet of opening with air outlet part, air outlet part is inserted with inlet end and is matched with each other.Gas flow into guide section can be guided under the flow guide camber and adjust flow direction, and then enter accommodating cavity along the tangent direction of inner container, form annular airflow around inner container, improve cooling effect.Air outlet part is inserted with inlet end and is matched with each other, not only can realize installation positioning of both, but also can improve the sealing property of butt joint.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a cooking utensil. Background Technology

[0002] Many existing cooking appliances, such as rice cookers and electric pressure cookers, use air-cooling technology. They use a fan to blow cold air onto the outer wall of the inner pot during or after cooking to quickly cool the inner pot and meet different needs.

[0003] For example, the applicant's previously applied water-wetting film coating technology uses a cooling fan on the pot body. The cooling fan creates an airflow that cools the outer wall of the inner pot, causing the high-temperature steam inside the inner pot to quickly condense into condensate when it comes into contact with the inner pot. This condensate forms a water film between the food and the inner wall of the inner pot, preventing the food from sticking to the inner wall and achieving a non-stick effect.

[0004] For example, Chinese patent CN102940445A discloses an electric pressure cooker with a quick-opening lid. After pressure cooking is completed, a cooling fan on the pot body blows cold air onto the outer wall of the inner pot to cool the inner pot, thereby achieving rapid depressurization inside the inner pot and completing the function of quick lid opening.

[0005] However, in the above solutions, most fans are axial fans. When installed on the pot body, the fan's airflow direction is normal to the curved structure of the inner pot's outer wall. Therefore, when the fan blows air onto the inner pot's surface, some airflow is directly impacted by the outer wall and bounced back. This increases wind resistance, making it difficult to form a circular airflow around the inner pot's perimeter, resulting in low cooling efficiency. Furthermore, the chaotic airflow at the fan outlet due to airflow collisions generates significant turbulent noise, severely impacting the user experience.

[0006] Furthermore, some existing cooking appliances have air outlet channels at the fan's outlet to guide the airflow blown by the fan into the insulation cover. However, since the side walls of the pot are mostly curved, the positioning and installation of the fan and air outlet channels are quite difficult. When the fan and air outlet channels are installed on the pot body separately, their positions are poorly correlated, especially at the joint, where there may be large gaps. This causes airflow to leak through the gaps, greatly reducing the utilization rate of the airflow and severely diminishing the cooling effect on the inner pot. Utility Model Content

[0007] This utility model provides a cooking appliance to solve the problems of airflow bounce caused by the fan's air outlet direction being normal to the inner pot's arc surface, resulting in low cooling efficiency and noise, as well as the difficulty in installing the fan and air outlet channel and the tendency for airflow leakage at the connection point.

[0008] The technical solution adopted in this utility model is as follows:

[0009] A cooking appliance includes a pot body, which includes a heat-insulating cover with a accommodating cavity and an inner liner placed within the accommodating cavity. A cooling component is also provided inside the pot body. An air inlet is provided on the side wall of the heat-insulating cover. The cooling component includes a cooling fan and a cooling duct. The cooling duct has an inlet end communicating with the cooling fan and an outlet end communicating with the air inlet. A guide section is provided between the inlet end and the outlet end. The inner wall of the guide section is provided with a guide arc surface so that at least part of the airflow enters the accommodating cavity along the tangential direction of the inner liner. The cooling fan has an air outlet with an air outlet that is inserted into the inlet end.

[0010] In this invention, the inlet end of the cooling duct is connected to the outlet of the cooling fan, and the outlet end is connected to the inlet of the insulation cover, so that the airflow of the cooling fan flows to the inlet through the cooling duct. An arc-shaped guide section is provided between the inlet and outlet ends, allowing the airflow entering the guide section to adjust its flow direction under the guidance of the arc surface. Part of the airflow then enters the accommodating cavity along the tangential direction of the inner liner. At this point, the airflow will not collide violently with the inner liner, but will flow smoothly along the arc surface of the inner liner's circumference due to the wall-mounting effect, thus forming a ring-shaped airflow around the inner liner. This creates a cooling ring on the outer surface of the inner liner, greatly improving the cooling effect and accelerating the cooling speed of the inner liner. Simultaneously, because the airflow is guided by the guide section, the contact between the airflow and the inner liner is gentler, resulting in smoother and more regular airflow at the inlet. This improves airflow efficiency, accelerates the formation of circulating airflow, and avoids noise caused by chaotic airflow, making the air-cooling process quieter and improving the user experience.

[0011] Furthermore, the air outlet of the cooling fan and the inlet of the cooling duct are interlocked, which not only facilitates their installation and positioning but also allows for easy and unified fixing of the cooling fan and duct into a single unit before attachment to the pot body. This simplifies the installation process and reduces the difficulty of the cooling components. Moreover, the interlocking connection ensures stable relative positions during subsequent assembly, minimizing the impact of misalignment on stability. Simultaneously, the easy fixation through interlocking improves positioning during assembly. For example, after fixing the cooling duct to the pot body, the fan's position is more clearly defined due to the simple fixation, eliminating the need for adjustments; simply tighten the fan to the pot body. Furthermore, the interlocking of the air outlet and inlet creates a partial overlap in the interlocking direction, improving the seal at the joint, reducing leakage, and enhancing airflow utilization and cooling efficiency.

[0012] The cooling fan is a centrifugal fan, with the air outlet located on the periphery of the cooling fan and extending into the inlet end to connect with the cooling air duct.

[0013] In this design, the guide section extends in an arc shape along the circumferential direction of the inner liner. The cooling fan is located on one side of the cooling duct to blow airflow into it. Therefore, if an axial fan is used, its axis needs to be parallel to the inlet end. This would result in the cooling fan occupying a large space in the thickness direction of the pot body after installation, leading to an increase in the radial dimension of the pot body. Using a centrifugal fan, however, involves axial suction and peripheral exhaust. Therefore, the cooling fan's axis can be arranged along the thickness or radial direction of the pot body, saving radial space and facilitating miniaturization. Simultaneously, the inlet end is wrapped around the outside of the outlet, ensuring that the airflow from the outlet completely enters the cooling duct, reducing the probability of airflow escape and improving airflow utilization.

[0014] The pot body also includes a water collection ring located at least partially above the heat preservation cover, and a base located below the heat preservation cover. The cooling air duct and cooling fan are fixed to the water collection ring or the base.

[0015] In this design, since the insulation cover is mostly made of metal, its main function is to collect heat from the cavity and prevent heat loss, thus insulating the inner liner. Therefore, the temperature of the insulation cover is usually high. If the cooling components were fixed to the insulation cover, on the one hand, the heat from the insulation cover would be directly transferred to the cooling components, causing the cooling fan to overheat, which would not only affect its lifespan but also result in the airflow blowing into the cavity being at a high temperature, creating a low temperature difference with the inner liner and hindering effective cooling. On the other hand, drilling holes in the insulation cover is difficult and would also cause heat loss from the cavity, reducing the insulation effect. Therefore, fixing the cooling duct and cooling fan to a water-collecting ring or base is preferable. Water-collecting rings and bases are mostly made of plastic, making them easier to manufacture and reducing processing costs. Furthermore, the water-collecting ring and base are located on the outside of the insulation cover, where the temperature is lower, which also reduces the temperature rise of the cooling fan and extends its lifespan. This also avoids drilling holes in the insulation cover, preventing heat leakage from the cavity.

[0016] A transition section is also provided between the inlet and outlet, connecting the inlet and the guide section.

[0017] In this design, after the airflow enters the cooling duct from the inlet end, it flows through the transition section to the guide section. The transition section allows for more flexible placement of the cooling fan, which does not have to be adjacent to the guide section. This facilitates the rational arrangement of the cooling fan's installation position based on the internal structure and space of the pot, making more rational use of the internal space of the pot and keeping the pot at a smaller size.

[0018] An air guide grille is installed at the air inlet, and the air guide grille is set at an angle to the normal direction of the inner liner.

[0019] In this design, the air guide grille can redirect the airflow at the air inlet, causing the airflow to flow in a direction deviating from the normal of the inner liner after passing through the air guide grille. This makes the airflow direction closer to the tangential direction of the inner liner, promoting the formation of annular airflow, improving the cooling effect, and further preventing the airflow from colliding violently with the inner liner.

[0020] The air guide grille includes a first grille and a second grille, with the first grille and the second grille being set in opposite directions of inclination.

[0021] In this design, the airflow at the air inlet is divided into two streams under the guidance of the first and second grilles, flowing in opposite directions. For example, part of the airflow is guided by the first grille to flow clockwise in the circumferential direction of the inner liner, while part of the airflow is guided by the second grille to flow counterclockwise in the circumferential direction of the inner liner. This allows the two airflows to surround the inner liner and converge at the opposite end of the inner liner. Each airflow contacts and cools about half of the circumferential area of ​​the inner liner. On the one hand, this can form a 360° all-round surround on the inner liner. On the other hand, compared with the same airflow flowing through the inner liner completely, the two airflows cool the two sides of the inner liner respectively, resulting in better heat exchange between the airflow and the inner liner and higher cooling efficiency.

[0022] The guide section has an air inlet and an air outlet. The cross-sectional area of ​​the guide section gradually decreases from the air inlet to the air outlet to form a guide arc surface.

[0023] In this design, a smooth air duct that transitions from wide to narrow is formed within the guide section. As the airflow moves inside, the velocity gradually increases due to the septum effect, eventually exiting from the outlet at a higher velocity, thus improving the cooling efficiency of the inner liner.

[0024] The flow cross-sectional area of ​​at least part of the guide section is larger than the gap between the inner liner sidewall and the insulation cover.

[0025] In this design, when the airflow in the guide section enters the gap between the inner liner sidewall and the insulation cover through the air inlet, the air pressure increases due to the narrower duct width. This causes the airflow velocity in the gap between the inner liner and the insulation cover to be faster, thereby accelerating the formation of the cooling ring and improving the cooling effect. Furthermore, the local width of the guide section is larger than this gap, resulting in a gentler guidance of the airflow and a smoother change in direction, avoiding violent collisions between the airflow and the guide section's curved surface that would generate noise.

[0026] The cooling assembly includes a housing, with a cooling air duct located inside the housing. The housing also has a wire hanging structure that forms a limiting groove for the passage of the wire harness.

[0027] In this solution, by incorporating a hanging wire structure into the shell, the cooling component gains richer functionality. This integrated cooling system combines the functions of cooling the inner liner and restraining the wiring harness, offering multiple uses in one unit. This simplifies the internal structure of the pot and saves internal space. Furthermore, the hanging wire structure is located outside the cooling duct, preventing high-speed airflow from passing over the wiring harness and ensuring a reliable connection.

[0028] The inner liner has a food storage section and an opening section located above the food storage section. A recessed section is provided between the food storage section and the opening section, which is recessed towards the inside of the inner liner. The horizontal projection of the air inlet is located above the horizontal midline of the food storage section; or, the horizontal projection of the air inlet is located above the horizontal midline of the inner liner.

[0029] In this design, the cooking appliance can be a pressure cooker. During cooking, the food inside the inner pot is concentrated in the lower part, while the upper part is mostly hot steam. During the depressurization phase of cooking, cooling airflow is directed towards the upper part of the inner pot, above the food. This prioritizes cooling the area above the food, increasing the cooling priority for the upper part of the inner pot. Since the upper part of the inner pot is mostly steam, the airflow can directly exchange heat with the hot steam inside through the inner pot wall, without having to pass through the food at the bottom. This shortens the heat exchange path, improves heat exchange efficiency, and helps to quickly reduce the temperature of the gas inside the inner pot, causing the steam to liquefy rapidly, achieving rapid depressurization, shortening the time the user needs to open the lid, and thus shortening the pressure cooking time. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0031] Figure 1 This is a schematic diagram of the structure of the pot body in one embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the pot body structure according to another embodiment of the present invention;

[0033] Figure 3 This is an exploded view of the pot body structure according to one embodiment of the present invention;

[0034] Figure 4 This is a cross-sectional view of the pot body structure according to one embodiment of the present invention, wherein the arrow indicates the direction of airflow;

[0035] Figure 5 This is a cross-sectional view of a cooling assembly according to one embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the water-collecting ring according to one embodiment of the present invention;

[0037] Figure 7 This is a structural schematic diagram of the pot body part according to another embodiment of the present utility model;

[0038] Figure 8 This is a schematic diagram of the pot body according to one embodiment of the present invention;

[0039] Figure 9 This is a cross-sectional view of the pot body structure according to one embodiment of the present invention;

[0040] Figure 10 This is a cross-sectional view of the pot body according to one embodiment of the present invention.

[0041] in:

[0042] 1. Insulation cover; 11. Receptacle; 12. Air inlet; 121. Air guide grille; 13. Air outlet;

[0043] 2. Inner liner; 21. Food container; 22. Rim; 23. Recess;

[0044] 3 Cooling components; 31 Cooling fan; 311 Air outlet; 312 Air outlet; 313 Air intake; 32 Cooling air duct; 321 Inlet end; 322 Outlet end; 323 Guide section; 3231 Air inlet end; 3232 Air outlet end; 324 Guide arc surface; 325 Adapter section; 33 Housing; 34 Cable hanging structure;

[0045] 4. Water collection ring; 41. Fixing part;

[0046] 5 bases;

[0047] 6 air intakes. Detailed Implementation

[0048] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0049] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0050] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] like Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, a cooking appliance includes a pot body, which includes a heat-insulating cover 1 having a accommodating cavity 11 and an inner liner 2 placed inside the accommodating cavity 11. A cooling assembly 3 is also provided inside the pot body. An air inlet 12 is provided on the side wall of the heat-insulating cover 1. The cooling assembly 3 includes a cooling fan 31 and a cooling duct 32. The cooling duct 32 has an inlet end 321 communicating with the cooling fan 31 and an outlet end 322 communicating with the air inlet 12. A guide section 323 is provided between the inlet end 321 and the outlet end 322. The inner wall of the guide section 323 is provided with a guide arc surface 324 so that at least part of the airflow enters the accommodating cavity 11 along the tangential direction of the inner liner 2. The cooling fan 31 has an air outlet 311 with an air outlet 312, which is inserted and engaged with the inlet end 321.

[0054] In this invention, the inlet end 321 of the cooling air duct 32 is connected to the outlet 312 of the cooling fan 31, and the outlet end 322 is connected to the inlet 12 on the insulation cover 1, so that the airflow of the cooling fan 31 flows to the inlet 12 through the cooling air duct 32. An arc-shaped guide section 323 is provided between the inlet end 321 and the outlet end 322, so that the airflow entering the guide section 323 can adjust its flow direction under the guidance of the guide arc surface 324, and then part of the airflow enters the receiving cavity 11 along the tangential direction of the inner liner 2. At this time, the airflow will not collide violently with the inner liner 2, but will flow along the arc surface of the inner liner 2 in the circumferential direction according to the wall hanging effect, thereby forming a ring airflow around the inner liner 2, forming a cooling ring on the outer surface of the inner liner 2, thereby greatly improving the cooling effect and accelerating the cooling speed of the inner liner 2. Meanwhile, after being guided by the guide section 323, the airflow makes a gentler contact with the inner liner 2, which makes the airflow at the air inlet 12 smoother and the flow direction more regular. On the one hand, it improves the efficiency of airflow and accelerates the formation of circulating airflow. On the other hand, it avoids noise caused by messy airflow, making the air cooling process quieter and improving the user experience.

[0055] Furthermore, the air outlet 311 of the cooling fan 31 and the inlet 321 of the cooling duct 32 are interlocked. This not only enables the installation and positioning of both components, but also allows the cooling fan 31 and the cooling duct 32 to be easily fixed together as a single unit before being fixed to the pot body. This simplifies the installation steps of the cooling assembly 3 and reduces the installation difficulty. Moreover, during subsequent assembly, the interlocking connection ensures stable relative positions, maintaining a stable connection after installation and reducing the impact of assembly position deviations on connection stability. Simultaneously, the easy fixing through interlocking also improves positioning during assembly. For example, after fixing the cooling duct 32 to the pot body, the installation position of the cooling fan 31 is more clearly defined due to the easy fixing of the cooling fan 31 to the cooling duct 32. There is no need to adjust the fan's position; simply tighten the cooling fan 31 to the pot body. Furthermore, after the air outlet 311 and the inlet end 321 are plugged together, there is a partial overlap in the plugging direction, which can improve the sealing of the joint, reduce the possibility of air leakage, and improve airflow utilization and cooling efficiency.

[0056] It should be noted that the purpose of providing the cooling air duct 32 and the guide section 323 in this invention is to guide at least a portion of the airflow blown out by the cooling fan 31 to flow along the tangential direction of the inner liner 2. This is in contrast to the traditional method where the airflow flows out along the axial direction of the air inlet 12 on the insulation cover 1 and blows directly onto the inner liner 2. In actual use, not all the airflow necessarily flows along the tangential direction of the inner liner 2; it is sufficient for a portion of the airflow to flow along the tangential direction of the inner liner 2.

[0057] Preferably, such as Figure 4 As shown, the guide section 323 extends circumferentially along the inner liner 2, and the guide arc surface 324 is disposed on the wall of the guide section 323 on the side facing the air inlet 12.

[0058] It should be noted that this utility model does not limit the type of cooling fan 31, which can be an axial fan. However, as a preferred embodiment, such as... Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the cooling fan 31 is a centrifugal fan, and the air outlet 311 is located on the periphery of the cooling fan 31.

[0059] The guide section 323 extends in an arc shape in the circumferential direction of the inner liner 2. The cooling fan 31 is located on one side of the cooling air duct 32 to blow airflow into it. Therefore, if an axial fan is used, its axis needs to be parallel to the inlet end 321. This would cause the cooling fan 31 to occupy a large space in the thickness direction of the pot body after installation, resulting in an increase in the radial dimension of the pot body. However, if a centrifugal fan is used, it draws air axially and exhausts it from the periphery. Therefore, the axis of the cooling fan 31 can be arranged along the thickness direction or radial direction of the pot body, thereby saving the radial dimension of the pot body and contributing to miniaturization design. In addition, compared with an axial fan, the centrifugal fan has a higher air pressure, which can deliver the airflow as much as possible to the gap between the insulation cover 1 and the inner liner 2.

[0060] Preferably, such as Figure 8 As shown, the cooling fan 31 also has an air intake 313, and the outer shell of the pot body is provided with an air inlet 6. At least a portion of the air intake 313 overlaps with the air inlet 6 to draw in outside air.

[0061] Furthermore, such as Figure 5 As shown, the air outlet 311 extends into the inlet end 321 to communicate with the cooling air duct 32. The inlet end 321 wraps around the outside of the air outlet 311, which allows the airflow blown out of the air outlet 312 to completely enter the cooling air duct 32, reducing the probability of airflow escaping and improving airflow utilization.

[0062] It is understandable that the cooling fan 31 and the cooling duct 32 are simply fixed by plugging in, and they still need to be fixed to the pot body by other means.

[0063] As a preferred embodiment of this utility model, such as Figure 2 , Figure 3 , Figure 6 , Figure 7 As shown, the pot body also includes a water collection ring 4 located at least partially above the heat preservation cover 1, and a base 5 located below the heat preservation cover 1. The cooling air duct 32 and the cooling fan 31 are fixed to the water collection ring 4 or the base 5.

[0064] Since the insulation cover 1 is mostly made of metal, its main function is to collect heat from the accommodating cavity 11 and prevent heat loss, thereby insulating the inner liner 2. Therefore, the temperature of the insulation cover 1 is usually relatively high. If the cooling component 3 is fixed to the insulation cover 1, on the one hand, the heat from the insulation cover 1 will be directly transferred to the cooling component 3, causing the cooling fan 31 to heat up. This will not only affect its service life, but also result in the airflow temperature blowing into the accommodating cavity 11 being relatively high, resulting in a low temperature difference with the inner liner 2 and making it difficult to effectively cool the inner liner 2. On the other hand, it is more difficult to process holes in the insulation cover 1, and it will also cause heat loss from the accommodating cavity 11, resulting in a decrease in the insulation effect of the insulation cover 1.

[0065] Therefore, the cooling duct 32 and the cooling fan 31 are fixed to the water collection ring 4 or the base 5. The water collection ring 4 and the base 5 are mostly made of plastic, which makes them easier to process and reduces processing costs. In addition, the water collection ring 4 and the base 5 are located on the outside of the insulation cover 1, where the temperature is lower. Fixing them here can also reduce the temperature rise of the cooling fan 31 and improve its service life. It also avoids the need to make openings in the insulation cover 1 and prevents heat leakage from the receiving cavity 11.

[0066] In one embodiment of this implementation, such as Figure 6 As shown, both the cooling fan 31 and the cooling duct 32 are fixed to the water collection ring 4. Specifically, as... Figure 6 As shown, the water collection ring 4 also has a fixing part 41 located on the outer periphery of the heat insulation cover 1, and the cooling air duct 32 and the cooling fan 31 are fixed to the fixing part 41 by screws. Of course, the outlet end 322 of the cooling air duct 32 can also be fixed or positioned with the heat insulation cover 1 to improve the sealing performance at the junction of the outlet end 322 and the air inlet 12.

[0067] In another embodiment of this implementation, such as Figure 7 As shown, a transition section 325 is also provided between the inlet end 321 and the outlet end 322, and the transition section 325 connects the inlet end 321 and the guide section 323.

[0068] After the airflow enters the cooling duct 32 from the inlet end 321, it flows through the transition section 325 to the guide section 323. The setting of the transition section 325 makes the setting position of the cooling fan 31 more flexible, without having to be set adjacent to the guide section 323. This makes it easier to arrange the installation position of the cooling fan 31 reasonably according to the internal structure and space of the pot, so as to make more reasonable use of the internal space of the pot and keep the pot in a smaller size.

[0069] Specifically, such as Figure 7 As shown, in this embodiment, the cooling fan 31 can be fixed to the base 5, and the cooling air duct 32 can be fixed to the water collection ring 4, so that the cooling fan 31 is located below the guide section 323. Then, the adapter section 325 is connected to the air outlet 312 of the cooling fan 31 and the guide section 323 respectively, so that the airflow of the cooling fan 31 is guided into the guide section 323.

[0070] In a preferred embodiment, such as Figure 9 As shown, an air guide grille 121 is provided at the air inlet 12. The air guide grille 121 is inclined so as to form an angle with the normal direction of the inner liner 2.

[0071] The air guide grille 121 can guide the airflow at the air inlet 12 again, so that after the airflow passes through the air guide grille 121, it flows in a direction deviating from the normal of the inner liner 2, thereby making the airflow direction closer to the tangential direction of the inner liner 2, promoting the formation of annular airflow, improving the cooling effect, and further avoiding the situation where the airflow collides violently with the inner liner 2.

[0072] Preferably, the air guide grille 121 includes a first grille and a second grille, with the first grille and the second grille arranged in opposite directions of inclination.

[0073] The airflow at the air inlet 12 is divided into two streams under the guidance of the first and second grilles, flowing in opposite directions. For example, part of the airflow is guided by the first grille to flow clockwise in the circumferential direction of the inner liner 2, while part of the airflow is guided by the second grille to flow counterclockwise in the circumferential direction of the inner liner 2. This allows the two airflows to surround the inner liner 2 and converge at the opposite end of the inner liner 2. Each of the two airflows contacts and cools about half of the circumferential area of ​​the inner liner 2. On the one hand, it can form a 360° all-round surround on the inner liner 2. On the other hand, compared with the same airflow flowing through the inner liner 2 completely, the two airflows cool the two sides of the inner liner 2 respectively, resulting in better heat exchange between the airflow and the inner liner 2 and higher cooling efficiency.

[0074] Preferably, such as Figure 4As shown, the insulation cover 1 has an exhaust vent 13 on the side away from the air inlet 12, so that the two airflows converge on this side and are discharged through the exhaust vent 13. It should be noted that the exhaust vent 13 and the air inlet 12 can be arranged opposite each other radially along the insulation cover 1, or they can be arranged radially offset, as long as they are on both sides of the insulation cover 1. For example, the insulation cover 1 can be divided into a left side region and a right side region along the front-back direction, where the air inlet 12 is located at the rear end of the left side region and the exhaust vent 13 is located at the rear end of the right side region.

[0075] Preferably, such as Figure 5 As shown, the guide section 323 has an air inlet end 3231 and an air outlet end 3232. The flow cross-sectional area of ​​the guide section 323 gradually decreases from the air inlet end 3231 to the air outlet end 3232 to form a guide arc surface 324.

[0076] A smooth air duct that transitions from wide to narrow is formed within the guide section 323. As the airflow moves within the duct, the airflow velocity gradually increases due to the septum effect, eventually flowing out from the outlet end 3232 at a higher velocity, thus improving the cooling efficiency of the inner liner 2.

[0077] Specifically, the air outlet 3232 is the outlet end 322 that constitutes the cooling air duct 32.

[0078] Preferably, such as Figure 4 As shown, the flow cross-sectional area of ​​at least a portion of the guide section 323 is greater than the gap between the side wall of the inner liner 2 and the insulation cover 1.

[0079] When the airflow within the guide section 323 enters the gap between the inner liner 2 and the insulation cover 1 through the air inlet 12, the air pressure increases due to the narrower air duct width. This causes the airflow velocity within the gap to be faster, thus accelerating the formation of the cooling ring and improving the cooling effect. Furthermore, the local width within the guide section 323 is larger than this gap, resulting in a gentler airflow guidance and a smoother change in airflow direction, preventing the airflow from violently colliding with the guide arc surface 324 of the guide section 323 and generating noise.

[0080] like Figure 2 , Figure 6 As shown, in one embodiment, the cooling assembly 3 includes a housing 33, a cooling air duct 32 located inside the housing 33, and the housing 33 is also provided with a wire hanging structure 34, which forms a limiting groove for the wire harness to pass through.

[0081] By setting the hanging structure 34 on the housing 33, the cooling assembly 3 is given richer functions. The cooling assembly 3 realizes the integration of cooling the inner pot 2 and restraining the wire harness, which is multi-functional, simplifies the internal structure of the pot body, and saves internal space. Moreover, the hanging structure 34 is located outside the cooling air duct 32, so that the high-speed airflow will not pass through the wire harness, thus ensuring the reliable connection of the wire harness.

[0082] This invention does not limit the type of cooking appliance; it can be an atmospheric pressure cooking appliance, such as a rice cooker, or a pressure cooking appliance, such as an electric pressure cooker. In the case of a pressure cooking appliance, during the cooking process, a large amount of high-temperature gas accumulates inside the inner pot 2, resulting in an internal pressure higher than the external pressure. To quickly reduce the pressure, the temperature of the high-temperature gas inside the pot needs to drop rapidly. Since most of the food is concentrated in the lower part of the inner pot, the high-temperature gas tends to accumulate in the upper middle part.

[0083] Therefore, as a preferred embodiment of this utility model, such as Figure 10 As shown, the inner liner 2 has a food storage portion 21 and an opening portion 22 located above the food storage portion 21. A concave portion 23 is provided between the food storage portion 21 and the opening portion 22, which is recessed toward the inside of the inner liner 2. The horizontal projection of the air inlet 12 is above the horizontal midline of the concave portion 23; or, the horizontal projection of the air inlet 12 is located above the horizontal midline of the inner liner 2.

[0084] During the depressurization stage of the cooking process, the cooling airflow blows towards the upper part of the inner pot 2, that is, above the food inside the inner pot 2. This allows the airflow to preferentially contact and cool the area of ​​the inner pot 2 above the food, increasing the priority of cooling the upper part of the inner pot 2. Since the upper part of the inner pot 2 is mostly steam, the airflow can directly exchange heat with the hot steam inside the inner pot 2 through the inner pot 2 wall, without having to pass through the food at the bottom. This shortens the heat exchange path, improves heat exchange efficiency, and helps to quickly reduce the temperature of the gas inside the inner pot 2, causing the steam to liquefy quickly, achieving rapid depressurization, shortening the time the user opens the lid, and thus shortening the pressure cooking time.

[0085] Specifically, in one embodiment, the horizontal projection of the air inlet 12 is located above the horizontal midline of the inner liner 2. The horizontal midline of the inner liner 2 is located at half the overall height of the inner liner 2. In another embodiment, the inner liner 2 includes an rim 22 and a food storage portion 21, with the food placed inside the food storage portion 21. The midline of the food storage portion 21 is located at half the height of the food storage portion 21. By positioning the air inlet 12 above this midline, the airflow position can be positioned above the food inside the inner liner 2.

[0086] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0087] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0088] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A cooking appliance, comprising a pot body, said pot body including a heat-insulating cover having a receiving cavity and an inner liner disposed within said receiving cavity, characterized in that, The pot body is also equipped with a cooling component. The side wall of the heat preservation cover is provided with an air inlet. The cooling component includes a cooling fan and a cooling duct. The cooling duct has an inlet end communicating with the cooling fan and an outlet end communicating with the air inlet. A guide section is provided between the inlet end and the outlet end. The inner wall of the guide section is provided with a guide arc surface so that at least part of the airflow enters the receiving cavity along the tangential direction of the inner liner. The cooling fan has an air outlet that is inserted into the inlet end.

2. The cooking utensil according to claim 1, characterized in that, The cooling fan is a centrifugal fan, and the air outlet is located on the periphery of the cooling fan. The air outlet extends into the inlet end to communicate with the cooling air duct.

3. The cooking utensil according to claim 1, characterized in that, The pot body also includes a water-collecting ring located at least partially above the heat insulation cover, and a base located below the heat insulation cover. The cooling air duct and the cooling fan are fixed to the water-collecting ring or the base.

4. The cooking utensil according to claim 3, characterized in that, A transition section is also provided between the inlet end and the outlet end, and the transition section connects the inlet end and the guide section.

5. The cooking utensil according to claim 1, characterized in that, An air guide grille is provided at the air inlet, and the air guide grille is inclined so as to form an angle with the normal direction of the inner liner.

6. The cooking utensil according to claim 5, characterized in that, The air guide grille includes a first grille and a second grille, with the first grille and the second grille arranged in opposite directions of inclination.

7. The cooking utensil according to claim 1, characterized in that, The guide section has an air inlet end and an air outlet end, and the flow cross-sectional area of ​​the guide section gradually decreases from the air inlet end to the air outlet end to form the guide arc surface.

8. The cooking utensil according to claim 1, characterized in that, The flow cross-sectional area of ​​at least a portion of the guide section is larger than the gap between the inner liner sidewall and the insulation cover.

9. The cooking utensil according to claim 1, characterized in that, The cooling assembly includes a housing, the cooling air duct is located inside the housing, and the housing is also provided with a wire hanging structure, which forms a limiting groove for the wire harness to pass through.

10. The cooking utensil according to claim 1, characterized in that, The inner liner has a food storage portion and an opening portion located above the food storage portion. A recessed portion is provided between the food storage portion and the opening portion, concave towards the interior of the inner liner. The horizontal projection of the air inlet is located above the horizontal midline of the food storage portion; or... The horizontal projection of the air inlet is located above the horizontal midline of the inner liner.

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