A cooking utensil

Abstract

The present application discloses a cooking utensil, comprising a pot body with a containing cavity and an inner pot, a cooling fan is arranged on the side of the containing cavity, and the cooling fan is connected to a first air outlet arranged in the containing cavity; a vortex cavity, an acceleration cavity and a cooling cavity are arranged between the inner wall of the containing cavity and the inner pot, the vortex cavity corresponds to the side of the inner pot, the cooling cavity corresponds to at least the bottom of the inner pot, the acceleration cavity connects the vortex cavity and the cooling cavity, and the flow diameter of the acceleration cavity is respectively smaller than the flow diameter of the vortex cavity and the cooling cavity; the wind flow enters the vortex cavity from the first air outlet, flows to the cooling cavity through the acceleration of the acceleration cavity to form a circulating wind flow and is discharged. After the wind flow is accelerated by the acceleration cavity, the wind flow enters the cooling cavity at a larger flow rate, which can increase the heat exchange efficiency between the wind flow and the bottom of the inner pot, and quickly take away the heat at the bottom of the inner pot, and the exhaust port is connected to the cooling cavity, and the fast-flowing wind flow can also form a circulating wind flow inside the cooling cavity and at the exhaust port, accelerating the discharge of the wind flow after heat exchange.

Description

Technical Field

[0001] The present application belongs to the technical field of household appliances, and specifically 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] In actual use, the heating device is generally located below the inner pot, so the heat is more concentrated on the bottom wall of the inner pot and the side wall near the bottom wall, and the food is also more concentrated on the bottom of the inner pot, so the bottom of the inner pot is more likely to stick to the pot. The cooling fan is mostly set on one side of the pot body. Although the airflow can be guided downward by setting an air guide structure at the air outlet of the cooling fan, the airflow efficiency is low due to the natural flow of the airflow, and the contact time with the bottom of the inner pot is short, and it is still impossible to efficiently exchange heat with the bottom of the inner pot, resulting in the water film on the bottom of the inner pot not being formed in a timely or uniform manner, and the anti-sticking effect of the bottom of the inner pot is not good. Summary of the invention

[0005] The present application provides a cooking utensil to solve the problem that the contact effect between the cooling airflow and the bottom of the inner pot is poor, the heat exchange efficiency is low, and it is difficult to form a moist film on the bottom of the inner pot in a timely and effective manner, affecting the overall anti-sticking effect of the inner pot.

[0006] The technical solution adopted in this application is:

[0007] A cooking utensil, comprising a pot body having an accommodating cavity and an inner pot placed in the accommodating cavity, wherein the pot body is provided with a cooling fan at a side of the accommodating cavity, and the cooling fan is connected to a first air outlet provided in the accommodating cavity; a vortex cavity, an acceleration cavity and a cooling cavity connected to the first air outlet are provided between an inner wall of the accommodating cavity and the inner pot, the vortex cavity corresponds to a side of the inner pot, the cooling cavity corresponds to at least a bottom of the inner pot, the acceleration cavity is connected to the vortex cavity and the cooling cavity, and the flow diameter of the acceleration cavity is smaller than the flow diameters of the vortex cavity and the cooling cavity respectively; The wind flows into the vortex cavity from the first air outlet, flows through the acceleration chamber to the cooling cavity to form a circulating wind flow and is discharged; the circulating wind flow in the cooling cavity includes the wind flow rotating along the circumference of the inner pot and / or the circulating wind flow between the cooling cavity and the exhaust port; the pot body is also provided with a pressure reduction fan on the side of the accommodating cavity, the pressure reduction fan is connected to the second air outlet provided in the accommodating cavity, and the second air outlet and the inner pot have an wind flow channel toward the upper part of the inner pot; the cooling fan and the pressure reduction fan are distributed on both sides of the pot body.

[0008] The cooking appliance of the present application also has the following additional technical features:

[0009] The bottom wall or the side wall of the accommodating cavity has a sudden contraction section protruding toward the interior of the accommodating cavity, and the sudden contraction section cooperates with the inner container to form the acceleration cavity.

[0010] The cooking utensil further comprises an electromagnetic wire coil arranged below the inner pot, and the electromagnetic wire coil cooperates with the bottom wall of the inner pot and a partial area of ​​the side wall of the inner pot to form the cooling cavity.

[0011] The inner wall of the accommodating cavity is provided with a pressure-bearing step, and the pressure-bearing step has a supporting section and an avoidance section along the circumference of the electromagnetic wire coil. The supporting section is used to support the inner liner, and the acceleration cavity is formed between the avoidance section and the inner liner.

[0012] The side wall of the inner container is provided with a matching portion, and the matching portion is placed on the supporting section so that the supporting section supports the inner container.

[0013] The cooking utensil further comprises a heating plate arranged below the inner pot, wherein the heating plate contacts the bottom wall of the inner pot to heat the inner pot, and the cooling cavity is formed between the heating plate and the bottom wall of the accommodating cavity.

[0014] The side wall of the inner liner has an extension section and a diameter-reduced section protruding toward the interior of the inner liner, the diameter-reduced section is located above the extension section, and the airflow channel has a guide cavity corresponding to the extension section and an air-cooling cavity corresponding to the diameter-reduced section along the airflow direction, and the flow diameter of the air-cooling cavity is larger than the flow diameter of the guide cavity.

[0015] The setting position of the first air outlet is lower than the setting position of the second air outlet; and / or, a first guide rib is provided at the first air outlet, and a second guide rib is provided at the second air outlet, the first guide rib extends obliquely downward so that the first air outlet is inclined toward the lower part of the inner liner, and the second guide rib extends obliquely upward so that the second air outlet is inclined toward the upper part of the inner liner.

[0016] The pot body has a central axis passing through the center and the front and rear sides, and the central axis divides the pot body into a first side area and a second side area, wherein the cooling fan is arranged in the first side area, and the pressure reduction fan is arranged in the second side area.

[0017] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0018] 1. In the present application, the wind flow blown by the cooling fan has an overall flow direction in the accommodating chamber toward the bottom of the inner liner. At the same time, in the process of the wind flow flowing toward the bottom of the inner liner, it passes through the vortex chamber formed by the inner liner side wall and the inner wall of the accommodating chamber, the acceleration chamber, and the cooling chamber formed by the inner liner bottom wall and the inner wall of the accommodating chamber in sequence, and the flow diameter of the acceleration chamber is smaller than that of the vortex chamber and the cooling chamber. The vortex chamber has a larger flow diameter than the acceleration chamber, and the flow speed of the wind flow in the vortex chamber is slower, so that it can flow horizontally, thereby surrounding the circumference of the bottom of the inner liner side wall, forming a cooling ring here, and quickly cooling the side wall close to the bottom wall of the inner liner. When the wind flow flows from the vortex chamber to the acceleration chamber, the flow speed of the wind flow is greatly increased due to the sudden contraction of the flow diameter, so that the wind flow enters the cooling chamber at a faster flow rate. The cooling cavity has a large flow diameter. After the airflow enters at a faster flow rate, it will quickly diffuse in the cooling cavity and flow horizontally under the guidance of the bottom of the inner pot, so that part of the airflow flows from the bottom wall of the inner pot, fully contacts with the bottom wall of the inner pot, and takes away the heat of the bottom wall of the inner pot, and part of the airflow flows in the cooling cavity along the circumference of the inner pot, thereby forming a second cooling ring at the bottom wall of the inner pot. The two airflows in the cooling cavity are used to cool the bottom of the inner pot in a centralized manner, and under the action of the upper and lower cooling rings, the cooling efficiency of the bottom area of ​​the inner pot is greatly improved, that is, a moist film can be quickly and timely formed on the bottom of the inner pot in the middle and late stages of food cooking, and the uniformity of the moist film is also better, so that the inner pot has a better anti-sticking effect.

[0019] After the acceleration chamber accelerates the wind flow, the wind flow enters the cooling chamber at a higher flow rate, which can increase the heat exchange efficiency between the wind flow and the bottom of the inner tank, quickly take away the heat of the bottom of the inner tank, and the exhaust port is connected to the cooling chamber, and the fast-flowing wind flow can also form a circulating wind flow inside the cooling chamber and at the exhaust port, accelerate the discharge of the wind flow after heat exchange, and then form a relative negative pressure in the cooling chamber, form a suction force on the wind flow in the acceleration chamber above, further accelerate the fresh wind flow for cooling to quickly enter the cooling chamber, and greatly improve the heat exchange efficiency of the bottom of the inner tank.

[0020] 2. As a preferred embodiment of the present application, the bottom wall or side wall of the accommodating cavity has a sudden contraction section protruding toward the inside of the accommodating cavity, and the sudden contraction section cooperates with the inner pot to form the acceleration cavity. Through the protrusion of the inner wall of the accommodating cavity, the gap between the sudden contraction section and the outer surface of the inner pot is reduced, thereby forming the acceleration cavity, which makes the overall structure of the cooking utensil simpler and convenient for processing and manufacturing. There is no need to improve the structure of the inner pot, and it is only necessary to process an inward protruding structure at the corresponding part of the pot body. Moreover, the sudden contraction section protruding toward the inner pot can also play a certain reflection effect on the wind flow. When the wind flow flows in the direction toward the inner wall of the accommodating cavity and contacts the inner wall of the accommodating cavity, the wind flow will change its flow direction after colliding with the inner wall of the accommodating cavity, and then flow toward the surface of the inner pot, thereby increasing the amount of wind in contact with the surface of the inner pot, improving the utilization rate of the wind flow, and then improving the cooling effect.

[0021] 3. As a preferred embodiment of the present application, the cooking utensil further comprises an electromagnetic wire coil disposed below the inner pot, and the electromagnetic wire coil cooperates with the bottom wall of the inner pot and a partial area of ​​the side wall of the inner pot to form the cooling cavity. In this embodiment, the cooking utensil heats the inner pot through the electromagnetic wire coil, thereby realizing non-contact heating, that is, the inner pot does not need to contact the electromagnetic wire coil to obtain a better heating effect. Therefore, there is a gap between the bottom of the inner pot and the electromagnetic wire coil, and the gap constitutes at least a partial area of ​​the cooling cavity, so that when the airflow enters the cooling cavity, it can directly contact the bottom of the inner pot to cool it down, thereby greatly shortening the heat transfer path, improving the heat exchange efficiency, and improving the cooling effect on the bottom of the inner pot.

[0022] 4. As a preferred embodiment of the present application, the cooking utensil further comprises a heating plate disposed below the inner pot, the heating plate contacts the bottom wall of the inner pot to heat the inner pot, and the cooling cavity is formed between the heating plate and the bottom wall of the accommodating cavity. In this embodiment, the cooking utensil contacts the inner pot via the heating plate to heat the inner pot. The cooling cavity is located below the heating plate. Therefore, after the airflow enters the cooling cavity, it will first cool down the heating plate, causing the temperature of the heating plate to drop rapidly, and at the same time, the position of the inner pot with the highest temperature (the bottom of the inner pot) will also be cooled down, 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.

[0023] 5. As a preferred embodiment of the present application, the pot body is further provided with a pressure reducing fan on the side of the accommodating cavity, and the pressure reducing fan is connected to the second air outlet provided in the accommodating cavity, and an airflow channel toward the upper part of the inner pot is provided between the second air outlet and the inner pot. In this embodiment, the wind flow blown by the cooling fan flows toward the bottom of the inner pot, and the bottom wall of the inner pot is centrally cooled, which is helpful for the formation of a moist film on the inner surface of the inner pot, thereby ensuring a non-stick effect. The wind flow blown by the pressure reducing fan is blown toward the upper part of the inner pot through the airflow channel. During the pressure cooking process, the water vapor generated by the heating of the food gathers more on the upper part of the inner pot, pushing the float on the pot cover to float up, so that the pot cover is locked, and the user cannot open the cover. The present embodiment blows cold air toward the upper part of the inner pot, adjusting the original heat transfer route of water vapor-inner pot food-inner pot side wall-cold air to water vapor-inner pot side wall-cold air, thereby improving heat transfer efficiency, helping to quickly reduce the temperature inside the inner pot, quickly relieve pressure inside the inner pot, and allowing the float to fall in a shorter time, thereby shortening the time it takes for users to open the lid and thereby shortening the pressure cooking time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 This is a structural explosion view of the pot body of the cooking utensil in one embodiment of the present application;

[0026] Figure 2 A cross-sectional view of a partial area of ​​the pot body in one embodiment of the present application, wherein an arrow indicates the airflow direction of the cooling fan;

[0027] Figure 3 for Figure 2A cross-sectional view of the pot body at another viewing angle, wherein the arrow indicates the airflow direction of the pressure-reducing fan;

[0028] Figure 4 A cross-sectional view of a partial area of ​​the pot body in another embodiment of the present application;

[0029] Figure 5 for Figure 4 Magnified view of area A in the middle;

[0030] Figure 6 This is a schematic structural diagram of the heat preservation cover in one embodiment of the present application;

[0031] Figure 7 for Figure 6 A schematic diagram of the internal structure of the heat preservation cover;

[0032] Figure 8 for Figure 6 A cross-sectional view of the thermal insulation cover;

[0033] Fig. 9 A cross-sectional view of a partial area of ​​the pot body in another embodiment of the present application;

[0034] Fig.10 A cross-sectional view of the cooking utensil according to one embodiment of the present application;

[0035] Fig.11 is a cross-sectional view of the pot body in another embodiment of the present application;

[0036] Fig.12 This is a schematic structural diagram of the air guide bracket in one implementation manner of the present application;

[0037] Fig.13 for Fig.12 A cross-sectional view of the air guide bracket described in;

[0038] Fig.14 This is a top view of the pot body according to one embodiment of the present application.

[0039] in:

[0040] 1 pot body; 11 outer cover; 12 heat preservation cover; 121 sudden contraction section; 122 pressure step; 1221 supporting section; 1222 avoidance section; 123 first air outlet; 124 second air outlet; 13 electromagnetic wire coil; 14 accommodating cavity; 141 swirling cavity; 142 accelerating cavity; 143 cooling cavity; 144 guiding cavity; 145 air cooling cavity; 15 heating plate;

[0041] 2 inner liner; 21 extension section; 22 diameter reduction section; 23 matching portion;

[0042] 3 cooling fan; 31 first air guide rib position; 32 air guide bracket; 33 fixing rib position; 34 air guide slope; 4 pressure reduction fan; 41 second air guide rib position. DETAILED DESCRIPTION

[0043] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0045] In addition, in the description of the present application, 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 application 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.

[0046] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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.

[0047] In the present application, 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 present application. 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.

[0048] like Figure 2 , Fig.10 , Fig.11As shown, a cooking utensil comprises a pot body 1 having a accommodating cavity 14 and an inner pot 2 placed in the accommodating cavity 14, the pot body 1 is provided with a cooling fan 3 on the side of the accommodating cavity 14, the cooling fan 3 is connected to a first air outlet 123 provided in the accommodating cavity 14; a vortex cavity 141, an acceleration cavity 142 and a cooling cavity 143 connected to the first air outlet 123 are provided between the inner wall of the accommodating cavity 14 and the inner pot 2, the vortex cavity 141 corresponds to the side of the inner pot 2, the cooling cavity 143 at least corresponds to the bottom of the inner pot 2, the acceleration cavity 142 is connected to the vortex cavity 141 and the cooling cavity 143, and the flow diameter of the acceleration cavity 142 is smaller than the flow diameter of the vortex cavity 141 and the cooling cavity 143 respectively; the wind flows into the vortex cavity 141 from the first air outlet 123, and flows to the cooling cavity 143 through the acceleration of the acceleration cavity 142 to form a circulating wind flow and is discharged.

[0049] Specifically, Figures 1 to 3 As shown, the pot body 1 includes an outer cover 11 and a heat-insulating cover 12 located inside the outer cover 11 , the heat-insulating cover 12 encloses the accommodating cavity 14 , and the cooling fan 3 is disposed in the space between the heat-insulating cover 12 and the outer cover 11 .

[0050] It should be noted that the "circulation diameter" in the present application is not used to limit the shape and structure of the vortex chamber 141, the acceleration chamber 142 and the cooling chamber 143. It can be understood that the circulation diameter refers to the flow cross-sectional area of ​​the flow channel formed by the three chambers respectively, or the width of the flow channel.

[0051] For example, in one embodiment, the heat preservation cover 12 has a sudden contraction section 121 protruding toward the inside of the accommodating chamber 14, and an electromagnetic wire reel 13 is arranged under the inner liner 2. The flow diameter of the vortex chamber 141 is the gap value between the part of the inner wall of the accommodating chamber 14 above the sudden contraction section 121 and the inner liner 2, the flow diameter of the acceleration chamber 142 is the gap value between the sudden contraction section 121 and the inner liner 2, and the flow diameter of the cooling chamber 143 is the gap value between the part of the inner wall of the accommodating chamber 14 below the sudden contraction section 121 and the inner liner 2.

[0052] For example, in another embodiment, the heat preservation cover 12 has a sudden contraction section 121 protruding toward the inside of the accommodating chamber 14, and a heating plate 15 in contact with the bottom of the inner tank 2 is arranged below the inner tank 2. The flow diameter of the vortex chamber 141 is the gap value between the portion of the inner wall of the accommodating chamber 14 above the sudden contraction section 121 and the inner tank 2, the flow diameter of the acceleration chamber 142 is the gap value between the sudden contraction section 121 and the inner tank 2 or the heating plate 15, and the flow diameter of the cooling chamber 143 is the gap value between the portion of the inner wall of the accommodating chamber 14 below the sudden contraction section 121 and the heating plate 15.

[0053] Among them, the vortex chamber 141 has a first connecting end that is connected to the acceleration chamber 142, and the cooling chamber 143 has a second connecting end that is connected to the acceleration chamber 142. The flow diameter of the acceleration chamber 142 is smaller than the flow diameters of the first connecting end and the second connecting end, so that the wind flows through the three chambers in sequence at different flow rates, and the interiors of the vortex chamber 141 and the cooling chamber 143 can be designed to be irregular shapes as needed, so that the flow diameters inside the vortex chamber 141 and the cooling chamber 143 vary to meet specific wind flow directions.

[0054] In the present application, the overall flow direction of the airflow blown by the cooling fan 3 in the accommodating chamber 14 is toward the bottom of the inner liner 2. At the same time, in the process of the airflow flowing toward the bottom of the inner liner 2, it passes through the vortex chamber 141, the acceleration chamber 142, and the cooling chamber 143 formed by the side wall of the inner liner 2 and the inner wall of the accommodating chamber 14 in sequence, and the flow diameter of the acceleration chamber 142 is smaller than that of the vortex chamber 141 and the cooling chamber 143.

[0055] The vortex cavity 141 has a larger flow diameter than the acceleration cavity 142, and the wind flow speed in the vortex cavity 141 is slower, so that it can flow horizontally, thereby surrounding the circumference of the bottom of the side wall of the inner liner 2, forming a cooling ring here, and quickly cooling the side wall close to the bottom wall of the inner liner 2. When the wind flows from the vortex cavity 141 to the acceleration cavity 142, the flow speed of the wind flow is greatly increased due to the sudden contraction of the flow diameter, so that the wind flow enters the cooling cavity 143 at a faster flow rate. The flow diameter of the cooling cavity 143 is relatively large. After the wind flows in at a faster flow rate, it will quickly diffuse in the cooling cavity 143 and flow laterally under the guidance of the bottom of the inner liner 2, so that a part of the wind flows from the bottom wall of the inner liner 2, fully contacts the bottom wall of the inner liner 2, and takes away the heat of the bottom wall of the inner liner 2. A part of the wind flows in the cooling cavity 143 along the circumference of the inner liner 2, thereby forming a second cooling ring at the bottom wall of the inner liner 2.

[0056] The bottom of the inner pot 2 is cooled centrally by two air flows in the cooling chamber 143, and the cooling efficiency of the bottom area of ​​the inner pot 2 is greatly improved under the action of the upper and lower cooling rings, that is, a moist film can be quickly and timely formed on the bottom of the inner pot 2 in the middle and late stages of food cooking, and the uniformity of the moist film is also better, so that the inner pot 2 has a better anti-sticking effect.

[0057] After the acceleration chamber 142 accelerates the wind flow, the wind flow enters the cooling chamber 143 at a higher flow rate, which can increase the heat exchange efficiency between the wind flow and the bottom of the inner liner 2, and quickly take away the heat at the bottom of the inner liner 2. The exhaust port is connected to the cooling chamber 143, and the fast-flowing wind flow can also form a circulating wind flow inside the cooling chamber 143 and at the exhaust port, accelerating the discharge of the wind flow after heat exchange, and then forming a relative negative pressure in the cooling chamber 143, forming a suction force on the wind flow in the acceleration chamber 142 above, further accelerating the fresh wind flow for cooling to quickly enter the cooling chamber 143, and greatly improving the heat exchange efficiency at the bottom of the inner liner 2.

[0058] The present application arranges the vortex chamber 141, the acceleration chamber 142 and the cooling chamber 143 in sequence by changing the flow diameter in the guide path extending from the cooling fan 3 to the bottom of the inner liner 2, thereby not only improving the priority of cooling the bottom area of ​​the inner liner 2 during the cooling process of the entire inner liner 2, but also making the wind flow contact with the bottom of the inner liner 2 for heat exchange first. At this time, the temperature difference between the wind flow and the bottom of the inner liner 2 is large, and the heat exchange efficiency is high. It also improves the cooling effect and cooling efficiency of the bottom of the inner liner 2. Through the design of the flow channel, the wind flow forms a cooling ring at the bottom of the side wall of the inner liner 2, and is accelerated in the acceleration chamber 142, entering the cooling chamber 143 at a faster flow rate, and forming a cooling ring again in the cooling chamber 143, ensuring the timely formation of the water-wetting film at the bottom of the inner liner 2 and the uniformity of the water-wetting film, thereby greatly improving the non-stick effect.

[0059] It should be noted that the circulating airflow in the cooling chamber 143 may refer to the airflow that rotates along the circumference of the inner liner 2. The rotating airflow flows around the inner liner 2, quickly takes away the heat at the bottom of the inner liner 2, and can increase the contact time and improve the heat exchange efficiency. It can also be the circulating airflow between the cooling chamber 143 and the exhaust port, so as to accelerate the discharge of the airflow in the cooling chamber 143 from the exhaust port, and accelerate the exchange of the airflow in the cooling chamber 143 with the outside world. Of course, the circulating airflow can also be used as a general term for the airflow in the above two embodiments, that is, there is both a circulating airflow that flows along the circumference of the inner liner 2 and a circulating airflow with the outside world in the cooling chamber 143.

[0060] Furthermore, the present application does not limit the location of the exhaust port. In one embodiment, the exhaust port is disposed at the bottom of the accommodating cavity 14, that is, at the bottom of the cooling cavity 143, so that after the cold air cools the bottom of the inner liner 2 in the cooling cavity 143, it is directly discharged downward through the exhaust port, thereby improving the exchange efficiency with the external air flow.

[0061] In another embodiment, the exhaust port is arranged at the side of the accommodating cavity 14 and communicates with the cooling cavity 143, so that the airflow in the cooling cavity 143 contacts the bottom of the inner pot 2 and flows upward to be discharged from the exhaust port. Of course, the exhaust port can also be arranged at the edge of the inner pot 2 and discharged from the top of the accommodating cavity 14, so that the air cools the entire inner pot 2, flows through the upper and lower regions of the inner pot 2, and then is discharged from the outside of the pot body 1.

[0062] As a preferred embodiment of the present application, Fig.10 , Fig.11 As shown, the bottom wall or the side wall of the accommodating cavity 14 has a sudden contraction section 121 protruding toward the inside of the accommodating cavity 14 , and the sudden contraction section 121 cooperates with the inner container 2 to form the acceleration cavity 142 .

[0063] By protruding the inner wall of the accommodating cavity 14, the gap between the sudden contraction section 121 and the outer surface of the inner pot 2 is reduced, thereby forming the acceleration cavity 142, which makes the overall structure of the cooking utensil simpler and convenient for processing and manufacturing, and there is no need to improve the structure of the inner pot 2, and it is only necessary to process an inward protruding structure at the corresponding part of the pot body 1. In addition, the sudden contraction section 121 protruding toward the inner pot 2 can also play a certain reflection effect on the wind flow. When the wind flow flows in the direction toward the inner wall of the accommodating cavity 14 and contacts the inner wall of the accommodating cavity 14, the wind flow will reverse its flow direction after colliding with the inner wall of the accommodating cavity 14, and then flow toward the surface of the inner pot 2, thereby increasing the amount of wind in contact with the surface of the inner pot 2, improving the utilization rate of the wind flow, and then improving the cooling effect.

[0064] This embodiment does not limit the position of the sudden contraction section 121 corresponding to the inner liner 2, and the inner liner 2 includes a bottom wall, a side wall, and a transition section between the bottom wall and the side wall. In one embodiment, the sudden contraction section 121 corresponds to the bottom of the side wall, that is, the vortex chamber 141 corresponds to the side wall, the acceleration chamber 142 corresponds to the bottom of the side wall, the cooling chamber 143 corresponds to the bottom wall, or the cooling chamber 143 corresponds to a partial area of ​​the bottom wall and the bottom of the side wall. In another embodiment, the sudden contraction section 121 corresponds to the transition section, so that the vortex chamber 141 corresponds to the bottom of the side wall, the acceleration chamber 142 corresponds to the transition section, and the cooling chamber 143 corresponds to the bottom wall. In another embodiment, the sudden contraction section 121 corresponds to the bottom wall, so that the vortex chamber 141 corresponds to the bottom of the side wall, or the vortex chamber 141 corresponds to the bottom of the side wall and a partial area of ​​the bottom wall, the acceleration chamber 142 corresponds to the bottom wall, and the cooling chamber 143 corresponds to the bottom wall.

[0065] The present application does not limit the heating method of the cooking appliance, which may be one of the following embodiments:

[0066] Implementation method 1: In this implementation method, Figure 2 , Figure 4 , Figure 5 , Fig.10 As shown, the cooking utensil further comprises an electromagnetic wire coil 13 disposed below the inner pot 2 , and the electromagnetic wire coil 13 cooperates with a bottom wall of the inner pot 2 and a partial area of ​​a side wall of the inner pot 2 to form the cooling cavity 143 .

[0067] In this embodiment, the cooking utensil heats the inner pot 2 through the electromagnetic wire coil 13, thereby achieving non-contact heating, that is, the inner pot 2 can obtain a better heating effect without contacting the electromagnetic wire coil 13. Therefore, there is a gap between the bottom of the inner pot 2 and the electromagnetic wire coil 13, and the gap constitutes at least a part of the cooling cavity 143, so that when the wind flow enters the cooling cavity 143, it can directly contact the bottom of the inner pot 2 to cool it down, thereby greatly shortening the heat transfer path, improving the heat exchange efficiency, and improving the cooling effect on the bottom of the inner pot 2.

[0068] In a preferred embodiment, Figure 2 , Figure 4 , Figures 5 to 8 As shown, the inner wall of the accommodating cavity 14 is provided with a pressure-bearing step 122, and the pressure-bearing step 122 has a supporting section 1221 and an avoidance section 1222 along the circumference of the electromagnetic wire reel 13, the supporting section 1221 is used to support the inner liner 2, and the acceleration cavity 142 is formed between the avoidance section 1222 and the inner liner 2.

[0069] It should be noted that this embodiment does not limit the structure of the pressure-bearing step 122. In a specific example, Figure 6 , Figure 7 , Figure 8 As shown, the pressure-bearing step 122 has a high position and a low position along the circumference of the accommodating cavity 14, wherein the high position constitutes the supporting section 1221, and the low position constitutes the avoidance section 1222, that is, the upper edge of the supporting section 1221 is higher than the upper edge of the avoidance section 1222, so that the supporting section 1221 is used to support the inner liner 2, and the acceleration cavity 142 is formed between the avoidance section 1222 and the inner liner 2.

[0070] Specifically, the electromagnetic wire reel 13 has a flange, and the flange is fixed to the avoidance section 1222 . However, there is still a gap between the flange and the inner tank 2 to form the acceleration chamber 142 .

[0071] In another specific example, the supporting section 1221 protrudes laterally toward the center of the accommodating cavity 14, and the avoidance section 1222 is away from the center of the accommodating cavity 14 relative to the supporting section 1221, so that the supporting section 1221 supports the inner liner 2, and the acceleration cavity 142 is formed between the avoidance section 1222 and the inner liner 2.

[0072] Preferably, the supporting sections 1221 and the avoiding sections 1222 are alternately arranged along the circumference of the accommodating cavity 14 to improve the stability of supporting the inner liner 2 and improve the uniformity of the airflow flowing along the circumference of the inner liner 2 .

[0073] Preferably, if Figure 4 , Figure 5 As shown, the cooking utensil is a pressure cooking utensil, and the side wall of the inner pot 2 is provided with a matching portion 23, and the matching portion 23 is placed on the supporting section 1221 so that the supporting section 1221 supports the inner pot 2.

[0074] The mating portion 23 of the side wall of the inner pot 2 cooperates with the pressure-bearing step 122. When the pressure inside the inner pot 2 increases, the inner pot 2 forms a downward pressure on the pressure-bearing step 122. In this way, the pressure transmission at the waist of the inner pot 2 is achieved, and the pressure transmission position is transferred to the waist of the inner pot 2, which optimizes the internal structural layout of the cooking utensil, improves the space utilization rate, releases the bottom space of the inner pot 2, and facilitates the arrangement of components such as temperature measuring parts. At the same time, the bottom space of the inner pot 2 is increased, which is convenient for the assemblers to assemble the components located below the inner pot 2, reduces the difficulty of assembly, avoids the situation of assembling multiple components in a small space, and thus improves the production efficiency of the cooking utensil.

[0075] Implementation method 2: In this implementation method, if Fig. 9 , Fig.11 As shown, the cooking utensil further includes a heating plate 15 disposed below the inner pot 2, the heating plate 15 contacts the bottom wall of the inner pot 2 to heat the inner pot 2, and the cooling cavity 143 is formed between the heating plate 15 and the bottom wall of the accommodating cavity 14.

[0076] In this embodiment, the cooking utensil contacts the inner pot 2 through the heating plate 15 to heat the inner pot 2. However, the heating plate 15 accumulates a large amount of heat, and even after the heating plate 15 is powered off and stops heating, it will continue to transfer heat to the inner pot 2, causing the inner pot 2 to be unable to cool down quickly.

[0077] In the present embodiment, the cooling chamber 143 is located below the heating plate 15. Therefore, after the airflow enters the cooling chamber 143, the heating plate 15 will be cooled down first, causing the temperature of the heating plate 15 to drop rapidly. At the same time, the position with the highest temperature of the inner tank 2 (the bottom of the inner tank 2) will also be cooled down. This can avoid the problem that the heating plate 15 continuously transfers heat to the bottom of the inner tank 2 during the cooling process, resulting in low cooling efficiency of the inner tank 2.

[0078] As a preferred embodiment of the present application, Figure 1 , Figure 3 As shown, the pot body 1 is further provided with a pressure reducing fan 4 on the side of the accommodating cavity 14, and the pressure reducing fan 4 is connected to a second air outlet 124 provided in the accommodating cavity 14, and an air flow channel toward the upper part of the inner pot 2 is provided between the second air outlet 124 and the inner pot 2.

[0079] In this embodiment, the wind flow blown by the cooling fan 3 flows toward the bottom of the inner pot 2, and the bottom wall of the inner pot 2 is concentratedly cooled, which is helpful for the formation of a moist film on the inner surface of the inner pot 2 to ensure the non-stick effect. The wind flow blown by the pressure reduction fan 4 is blown toward the upper part of the inner pot 2 through the wind flow channel. During the pressure cooking process, the water vapor generated by the heating of the food is more concentrated in the upper part of the inner pot 2, pushing the float on the pot cover to float up, so that the pot cover is locked and the user cannot open the cover. In this embodiment, cold air is blown toward the upper part of the inner pot 2, and the original heat transfer route of water vapor-inner pot 2 food-inner pot 2 side wall-cold air is adjusted to water vapor-inner pot 2 side wall-cold air, which improves the heat transfer efficiency, helps to quickly reduce the temperature inside the inner pot 2, and quickly releases the pressure inside the inner pot 2. The float falls in a shorter time, shortens the time for users to open the cover, and thus shortens the pressure cooking time.

[0080] Furthermore, if Figure 3 , Figure 4 As shown, the side wall of the inner liner 2 has an extension section 21 and a diameter-reduced section 22 protruding toward the interior of the inner liner 2, and the diameter-reduced section 22 is located above the extension section 21. The airflow channel has a guide cavity 144 corresponding to the extension section 21 and an air-cooling cavity 145 corresponding to the diameter-reduced section 22 along the airflow direction, and the flow diameter of the air-cooling cavity 145 is larger than the flow diameter of the guide cavity 144.

[0081] The setting of the diameter reduction section 22 increases the contact area between the upper part of the inner liner 2 and the wind flow, which can improve the cooling efficiency. The wind flow blown by the pressure reduction fan 4 flows to the upper part of the inner liner 2 through the guidance of the wind flow channel, enters the wind cooling cavity 145 after passing through the guide cavity 144, and then flows around the upper part of the inner liner 2, forming a cooling ring again on the upper part of the inner liner 2.

[0082] Among them, the airflow blown out by the pressure reducing fan 4 and the airflow blown out by the cooling fan 3 can share an exhaust port and be discharged from the exhaust port, or they can be separately provided with exhaust ports, one exhaust port being used to discharge the airflow blown out by the pressure reducing fan 4 flowing toward the upper part of the inner liner 2, and the other exhaust port being used to discharge the airflow blown out by the cooling fan 3 flowing toward the bottom of the inner liner 2, which is not limited here.

[0083] Preferably, in order to reduce the mutual interference of the airflows blown by the two fans and ensure the normal cooling and pressure reduction functions, the first air outlet 123 should be oriented toward the bottom of the inner liner 2, and the second air outlet 124 should be oriented toward the upper part of the inner liner 2. However, the present application does not limit the arrangement of the first air outlet 123 and the second air outlet 124.

[0084] In one embodiment, if Figure 8 As shown, the first air outlet 123 is arranged at a position lower than the second air outlet 124. The first air outlet 123 corresponds to the lower part of the inner liner 2, and the second air outlet 124 corresponds to the upper part of the inner liner 2, so that the airflows blown out from the two air outlets are naturally split.

[0085] In another embodiment, if Figure 1 , Figure 2 , Figure 3 As shown, a first guide rib position 31 is provided at the first air outlet 123, and a second guide rib position 41 is provided at the second air outlet 124. The first guide rib position 31 extends obliquely downward so that the first air outlet 123 is inclined toward the lower part of the inner liner 2, and the second guide rib position 41 extends obliquely upward so that the second air outlet 124 is inclined toward the upper part of the inner liner 2.

[0086] In this embodiment, there is no need to additionally design the height positions of the first air outlet 123 and the second air outlet 124. The two can also be at the same height. Instead, guide ribs are respectively set at the first air outlet 123 and the second air outlet 124 to guide the airflow to flow toward the upper or lower part of the inner liner 2.

[0087] Of course, the above two embodiments can also be combined with each other, that is, the setting position of the first air outlet 123 is lower than the second air outlet 124. At the same time, a first guide rib position 31 extending toward the bottom of the inner liner 2 is set at the first air outlet 123, and a second guide rib position 41 extending toward the upper part of the inner liner 2 is set at the second air outlet 124, which is not limited here.

[0088] Furthermore, if Fig.12 , Fig.13 As shown, the first guide rib position 31 and the second guide rib position 41 are both fixed to the side wall of the accommodating cavity 14 through the air guide bracket 32, and the two sides of the air guide bracket 32 ​​are provided with fixing rib positions 33 for fixing to the side wall of the accommodating cavity 14, and the fixing rib positions 33 on both sides are staggered to prevent the installation of the air guide bracket 32 ​​and limit the installation direction of the air guide bracket 32. Specifically, the fixing rib position 33 is provided with a fixing hole, and is fixed to the side wall of the accommodating cavity 14 from the outside of the accommodating cavity 14 by fasteners such as screws.

[0089] Furthermore, if Fig.13 As shown, the air guide bracket 32 ​​is covered on the outside of the cooling fan 3 and the pressure reduction fan 4, and the inner wall of the air guide bracket 32 ​​is provided with a guide slope 34. The inclination direction of the guide slope 34 inside the air guide bracket 32 ​​for installing the first guide rib position 31 is the same as that of the first guide rib position 31, and the inclination direction of the guide slope 34 inside the air guide bracket 32 ​​for installing the second guide rib position 41 is the same as that of the second guide rib position 41.

[0090] Specifically, Fig.14 As shown, the pot body 1 has a central axis passing through the center and the front and rear sides, and the central axis divides the pot body 1 into a first side area and a second side area, wherein the cooling fan 3 is arranged in the first side area, and the pressure reduction fan 4 is arranged in the second side area.

[0091] The cooling fan 3 and the pressure reduction fan 4 are arranged along opposite sides of the pot body 1, which can more reasonably utilize the internal space of the pot body 1 and avoid structural crowding. At the same time, the two fans can be spaced far apart to avoid mixing of the airflows blown by the two fans and affecting the overall flow direction of the airflow.

[0092] The cooling fan 3 and the pressure reducing fan 4 may be arranged relative to each other or in a staggered manner, as long as they are distributed on both sides of the pot body 1, and no limitation is made here.

[0093] It should be noted that the present application does not limit the working time and coordination mode of the cooling fan 3 and the pressure reduction fan 4.

[0094] In one embodiment, in the middle and late stages of the cooking stage, during the food cooking stage, the cooling fan 3 and the pressure reducing fan 4 are both started, the cooling fan 3 blows cold air toward the bottom of the inner pot 2, and the pressure reducing fan 4 blows cold air toward the upper part of the inner pot 2, so that the inner pot 2 is evenly cooled from top to bottom. This can accelerate the formation of a moist film at the bottom of the inner pot 2 and improve the anti-sticking effect, and can also cool down the upper part of the inner pot 2. While forming a moist film, it also facilitates the cooling of the inner pot 2, making it easier for users to extract the inner pot 2.

[0095] Of course, during the cooking stage, only the cooling fan 3 may be started without starting the pressure reduction fan 4, so as to centrally cool the bottom of the inner pot 2 and promote the formation of a moist film.

[0096] In another embodiment, the cooking appliance is a pressure cooking appliance, and in the pressure reduction stage after the pressure cooking is completed, the cooling fan 3 and the pressure reduction fan 4 are both started, the cooling fan 3 blows cold air toward the bottom of the inner pot 2, and the pressure reduction fan 4 blows cold air toward the upper part of the inner pot 2, so that the inner pot 2 is evenly cooled from top to bottom, and the temperature inside the inner pot 2 is fully reduced. It can accelerate the formation of the moist film at the bottom of the inner pot 2 and improve the anti-sticking effect, and can also cool the upper part of the inner pot 2. While forming the moist film, it can also quickly reduce the temperature of the air inside the inner pot 2 and achieve rapid pressure reduction.

[0097] Of course, during the cooking stage, only the pressure reduction fan 4 may be started without starting the cooling fan 3 .

[0098] It is understandable that during the pressure cooking process, the above two cooking stages exist, and the cooking appliance first goes through the pressure cooking stage and then enters the pressure reduction stage, wherein in the corresponding cooking stage, the cooling fan 3 and the pressure reduction fan 4 can both work in the manner described in the above embodiment. For example, in the middle and late stages of the cooking stage, the cooling fan 3 starts alone to cool the bottom of the inner pot 2, and after entering the pressure reduction stage, the cooling fan 3 stops, and the pressure reduction fan 4 starts to blow cold air to the upper part of the inner pot 2.

[0099] It should be noted that when the cooling fan 3 and the pressure reducing fan 4 are started together at any stage, the present application does not limit the working mode of the two. For example, the two can be started and stopped at the same time, or they can be started and stopped in sequence, or they can work alternately. For example, the cooling fan 3 starts working for a certain time and then stops working. At the same time, the pressure reducing fan 4 starts working for a certain time, and the operation is repeated alternately. The working time of the cooling fan 3 and the pressure reducing fan 4 can be adjusted according to specific needs, and can be the same or different, which is not limited here.

[0100] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0101] 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.

[0102] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A cooking utensil, comprising a pot body having a receiving cavity and an inner pot placed in the receiving cavity, characterized in that: The pot body is provided with a cooling fan at the side of the accommodating cavity, and the cooling fan is connected to the first air outlet provided in the accommodating cavity; A vortex chamber, an acceleration chamber, and a cooling chamber connected to the first air outlet are provided between the inner wall of the accommodating chamber and the inner liner, the vortex chamber corresponds to the side of the inner liner, the cooling chamber corresponds to at least the bottom of the inner liner, the acceleration chamber connects the vortex chamber and the cooling chamber, and the flow diameter of the acceleration chamber is smaller than the flow diameters of the vortex chamber and the cooling chamber respectively; The wind flows into the vortex cavity from the first air outlet, flows into the cooling cavity through the acceleration cavity to form a circulating wind flow and is discharged; the circulating wind flow in the cooling cavity includes the wind flow rotating along the circumference of the inner tank and / or the circulating wind flow between the cooling cavity and the air outlet; The pot body is also provided with a pressure reduction fan on the side of the accommodating cavity, and the pressure reduction fan is connected to the second air outlet provided in the accommodating cavity, and there is an air flow channel toward the upper part of the inner pot between the second air outlet and the inner pot; the cooling fan and the pressure reduction fan are distributed on both sides of the pot body.

2. The cooking device according to claim 1, characterized in that: The bottom wall or the side wall of the accommodating cavity has a sudden contraction section protruding toward the interior of the accommodating cavity, and the sudden contraction section cooperates with the inner container to form the acceleration cavity.

3. The cooking device according to claim 1, characterized in that: The cooking utensil further comprises an electromagnetic wire coil arranged below the inner pot, and the electromagnetic wire coil cooperates with the bottom wall of the inner pot and a partial area of ​​the side wall of the inner pot to form the cooling cavity.

4. The cooking device according to claim 3, characterized in that: The inner wall of the accommodating cavity is provided with a pressure-bearing step, and the pressure-bearing step has a supporting section and an avoidance section along the circumference of the electromagnetic wire coil. The supporting section is used to support the inner liner, and the acceleration cavity is formed between the avoidance section and the inner liner.

5. The cooking device according to claim 4, characterized in that: The side wall of the inner container is provided with a matching portion, and the matching portion is placed on the supporting section so that the supporting section supports the inner container.

6. The cooking device according to claim 1, characterized in that: The cooking utensil further comprises a heating plate arranged below the inner pot, wherein the heating plate contacts the bottom wall of the inner pot to heat the inner pot, and the cooling cavity is formed between the heating plate and the bottom wall of the accommodating cavity.

7. The cooking device according to claim 1, characterized in that: The side wall of the inner liner has an extension section and a diameter-reduced section protruding toward the interior of the inner liner, the diameter-reduced section is located above the extension section, and the airflow channel has a guide cavity corresponding to the extension section and an air-cooling cavity corresponding to the diameter-reduced section along the airflow direction, and the flow diameter of the air-cooling cavity is larger than the flow diameter of the guide cavity.

8. The cooking device according to claim 1, characterized in that: The first air outlet is located at a position lower than the second air outlet; and / or, A first guide rib is provided at the first air outlet, and a second guide rib is provided at the second air outlet. The first guide rib extends obliquely downward so that the first air outlet is inclined toward the lower part of the inner liner, and the second guide rib extends obliquely upward so that the second air outlet is inclined toward the upper part of the inner liner.

9. The cooking device according to claim 1, characterized in that: The pot body has a central axis passing through the center and the front and rear sides, and the central axis divides the pot body into a first side area and a second side area, wherein the cooling fan is arranged in the first side area, and the pressure reduction fan is arranged in the second side area.

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