Air-cooled cooking utensil

Abstract

The utility model discloses an air-cooled cooking utensil which comprises a pot body and a pot cover covering the pot body, the pot body comprises an outer pot and an inner container arranged in the outer pot, a cooling fan is arranged on the side wall of the pot body, and a food amount mark is arranged on the side wall of the inner container. The food quantity mark comprises a minimum marking line, a maximum marking line and a median line located between the maximum marking line and the minimum marking line, and at least part of the area, projected towards the inner container, of the air outlet of the cooling fan is located above the median line so as to blow air flow to the area above the median line. In the pressure reduction stage of the cooking process, part of air flow blown out by the cooling fan flows towards the area above food in the inner container, so that the air flow preferentially makes contact with the area, above the food materials, of the inner container for cooling, and an original heat transfer route is changed from water vapor in the inner container to the food in the inner container to the side wall of the inner container to cold air. And water vapor in the inner container, the side wall of the inner container and cold air are adjusted, so that a heat transfer path is shortened, the temperature of gas in the inner container can be quickly reduced, and quick pressure relief is realized.

Description

Technical Field

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

[0002] After cooking viscous foods such as porridge or soup in a pressure cooking appliance (such as a pressure cooker), if the pressure is released by traditional exhaust, not only will the pressure release last for a long time and require a long waiting time, but the soup will also be discharged along with the gas, causing overflow.

[0003] Therefore, in the prior art, some pressure cooking appliances are provided with air cooling devices. After the pressure cooking is completed, cold air is blown to the inner pot or the pot cover to quickly reduce the air pressure in the pot, thereby achieving rapid pressure relief.

[0004] The air cooling device on the pot body is generally arranged on the side of the pot body, blowing air cooling air horizontally into the pot body. However, the setting position of the air cooling device or the direction of the air outlet is usually toward the lower part of the inner pot, so that the cooling of the lower part of the inner pot has a higher cooling priority. The airflow contacts the lower part of the inner pot and takes away the heat from the lower part of the inner pot. The temperature of the airflow rises and then flows to the upper part of the inner pot to cool the inner pot. However, at this time, the temperature difference between the airflow and the inner pot is reduced, and the heat exchange efficiency is greatly reduced, resulting in poor cooling effect on the upper part of the inner pot.

[0005] During pressure cooking, a large amount of high-temperature gas gathers in the cooking cavity of the pot, which causes the pressure inside the pot to be higher than the external pressure. If you want to quickly reduce the pressure, you need to quickly reduce the temperature of the high-temperature gas in the pot. However, most of the food is concentrated in the lower part of the inner pot, and the high-temperature gas is more concentrated in the middle and upper part of the inner pot. Therefore, in the prior art, the effect of using air cooling to reduce pressure is not good, and the entire air cooling and pressure reduction process still takes a long time, which affects the user experience.

[0006] In addition, since the food is concentrated in the lower part of the inner pot, it is affected by the different cooling speeds of different types of ingredients and the waste heat transferred to the inner pot by the heating device at the bottom of the inner pot, which causes the air cooling device to blow air to the bottom of the inner pot to reduce the pressure. The cooking program has difficulty controlling the pressure reduction speed and time, which leads to large deviations in the control of the pressure in the pot and the calculation of the pressure reduction time by the cooking appliance. Especially for pressure cooking appliances without top temperature measuring devices, it is even more difficult to achieve more accurate temperature and pressure control, affecting the function realization of the cooking appliance and the user experience. Utility Model Content

[0007] The utility model provides an air-cooled cooking utensil to solve the problem that the existing air-cooling device has a poor cooling effect on the inner pot, especially on the upper part of the inner pot, resulting in a relatively slow pressure reduction speed in the pot, low pressure reduction efficiency and difficulty in achieving relatively accurate temperature and pressure control.

[0008] The technical solution adopted by the utility model is:

[0009] A wind-cooled cooking utensil comprises a pot body and a pot cover fitted on the pot body, the pot body comprising an outer pot and an inner pot placed in the outer pot, a cooling fan is arranged on the side wall of the pot body, a food quantity mark is arranged on the side wall of the inner pot, the food quantity mark comprises a minimum marking line, a maximum marking line and a median line located between the maximum marking line and the minimum marking line, at least a portion of the area where the air outlet of the cooling fan is projected toward the inner pot is located above the median line so as to blow airflow to the area above the median line.

[0010] The air-cooled cooking utensil of the present invention also has the following additional technical features:

[0011] The central axis of the cooling fan is located above the midline.

[0012] A guide portion is arranged at the air outlet of the cooling fan, and the guide portion is arranged to be inclined upward so that the airflow blown by the cooling fan flows toward the upper side of the midline.

[0013] The side wall of the inner tank has an extension section and a diameter-reduced section recessed toward the interior of the inner tank, the diameter-reduced section is located above the extension section, the cooling air duct has a guide cavity corresponding to the extension section, and an air-cooling cavity corresponding to the diameter-reduced section, and the flow diameter of the air-cooling cavity is larger than the flow diameter of the guide cavity.

[0014] The extension section extends in an arc shape to form a flow-guiding arc surface on the inner wall of the guide cavity.

[0015] An air outlet is provided between the edge of the inner pot and the edge of the outer pot, and the flow diameter of the air outlet is smaller than the flow diameter of the air cooling cavity.

[0016] The cooling fan includes a control unit and fan blades. The air-cooled cooking appliance also includes a fan bracket. The cooling fan is fixed to the outer pot or the inner pot through the fan bracket. The fan bracket has guide blades arranged corresponding to the fan blades and a baffle arranged corresponding to the control unit.

[0017] The pot cover includes a pressure-bearing steel cover and an upper cover assembly, a cooling air duct is provided between the pressure-bearing steel cover and the upper cover assembly, the pot cover is provided with a cooling fan connected to the cooling air duct, a cooling air duct is provided between the outer pot and the inner pot, and the cooling air duct and the cooling air duct are isolated from each other.

[0018] The cooling fan has a first rotation speed, and the temperature reduction fan has a second rotation speed, and the first rotation speed is greater than the second rotation speed.

[0019] The upper cover assembly includes a surface cover located above the pressure-bearing steel cover and a supporting cantilever located above the surface cover. The cooling air duct is located between the surface cover and the pressure-bearing steel cover. The cooling fan is arranged on the supporting cantilever. The surface cover is provided with a docking port for connecting the cooling fan and the cooling air duct.

[0020] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0021] 1. In the utility model, the projection of the air outlet of the cooling fan on the pot body toward the inner pot is at least partially located above the median line. When the user cooks according to the correct usage requirements, the amount of food placed is between the maximum marking line and the minimum marking line. The median line marked with the amount of food is used as a height reference, which can meet the height relationship between the amount of food and the cooling airflow in most cooking modes, and improve the versatility of the airflow direction design. In the pressure reduction stage of the cooking process, at least part of the airflow blown by the cooling fan flows to the area above the food in the inner pot, so that it preferentially contacts and cools the area of ​​the inner pot above the food, thereby increasing the priority of cooling the upper part of the inner pot, and adjusting the original heat transfer route from water vapor in the inner pot-food in the inner pot-side wall of the inner pot-cold air to water vapor in the inner pot-side wall of the inner pot-cold air, thereby shortening the heat transfer path, improving the heat transfer efficiency, and helping to quickly reduce the temperature of the gas inside the inner pot, achieving rapid pressure relief, shortening the time for users to open the lid, and thus shortening the pressure cooking time.

[0022] In addition, the airflow of the cooling fan flows to the upper part of the inner pot to cool down the hot steam on the upper part of the food in the inner pot, so that the efficiency of air cooling and pressure reduction will not be easily affected by the food and heating device in the lower part of the inner pot. The cooking program of the cooking utensil can more accurately control the pressure in the pot and calculate the pressure reduction time, so that more precise temperature and pressure control can be achieved on the pressure cooking utensil without a temperature measuring device on the top.

[0023] 2. As a preferred embodiment of the present invention, a guide portion is provided at the air outlet of the cooling fan, and the guide portion is arranged to be inclined upward so that the wind flow blown by the cooling fan flows toward the upper part of the midline. The wind flow blown by the cooling fan is guided by the guide portion extending upwardly and is directed upward to the upper part of the inner pot, thereby making the setting position of the cooling fan more flexible while satisfying the priority cooling of the upper part of the inner pot. The cooling fan does not need to be set at a higher position, and the arrangement position of the cooling fan can be appropriately lowered, thereby optimizing the structural layout of the pot body, reducing the difficulty of installation and avoiding interference between the cooling fan and other parts of the pot body.

[0024] 3. As a preferred embodiment of the present invention, the side wall of the inner tank has an extension section and a diameter reduction section that is recessed toward the inner tank, the diameter reduction section is located above the extension section, and the cooling air duct has a guide cavity corresponding to the extension section and an air cooling cavity corresponding to the diameter reduction section, and the flow diameter of the air cooling cavity is greater than the flow diameter of the guide cavity. The provision of the diameter reduction section increases the width of the air cooling cavity, reduces the flow rate of the air flow in the air cooling cavity, and increases the contact area between the upper part of the inner tank and the air flow, prolongs the contact time, can improve the heat exchange effect between the diameter reduction section and the air flow, and improve the cooling efficiency of the upper part of the inner tank. The air flow blown out by the cooling fan enters the air cooling cavity through the guidance of the guide cavity, and then flows around the inner tank in the air cooling cavity, forming a cooling ring at the upper part of the inner tank, improving the cooling effect on the upper part of the inner tank, and achieving rapid pressure reduction.

[0025] 4. As a preferred embodiment of the present invention, an exhaust port is provided between the rim of the inner pot and the rim of the outer pot, and the flow diameter of the exhaust port is smaller than the flow diameter of the air cooling chamber. The wind flow fully contacts the diameter reduction section of the inner pot in the air cooling chamber, and after cooling it, it is discharged to the outside of the pot body through the exhaust port. The flow diameter of the exhaust port is smaller than the flow diameter of the air cooling chamber, so that the wind flow is accelerated when passing through the exhaust port and discharged at a faster flow rate, thereby improving the discharge efficiency of the wind flow. At the same time, the faster flow rate can form a negative pressure at the exhaust port, forming a suction force on the wind flow in the air cooling chamber, thereby further accelerating the discharge of the wind flow in the air cooling chamber, accelerating the wind flow circulation, and improving the heat exchange efficiency.

[0026] 5. As a preferred embodiment of the utility model, the pot cover includes a pressure-bearing steel cover and an upper cover assembly, a cooling air duct is provided between the pressure-bearing steel cover and the upper cover assembly, the pot cover is provided with a cooling fan connected to the cooling air duct, a cooling air duct is provided between the outer pot and the inner pot, and the cooling air duct and the cooling air duct are isolated from each other. The wind flow formed by the cooling fan is only used to cool the pressure-bearing steel cover, and can flow and circulate in the cooling air duct alone, but cannot flow into the cooling air duct of the pot body. The wind flow formed by the cooling fan is only used to cool the inner pot, and can flow and circulate in the cooling air duct alone, but cannot flow into the cooling air duct of the pot cover. In this way, during the depressurization process, the cooling fan and the cooling fan can independently cool the pressure-bearing steel cover and the inner pot, increase the contact area between the cold air and the inner pot and the pressure-bearing steel cover, and improve the heat exchange efficiency. Moreover, the airflows formed by the cooling fan and the temperature reduction fan flow and circulate in their respective air ducts without mixing, thus avoiding heat exchange between the two airflows. The airflow with lower temperature is always in contact with the pressure-bearing steel cover and the inner liner, ensuring heat exchange efficiency, thereby shortening the overall pressure reduction time, facilitating quick opening of the cover, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0028] Figure 1 It is a cross-sectional view of an air-cooled cooking appliance according to an embodiment of the utility model, wherein arrows indicate the direction of air flow;

[0029] Figure 2 for Figure 1 A cross-sectional view of the middle pot body;

[0030] Figure 3 for Figure 2 Magnified view of area A in the middle;

[0031] Figure 4 This is a schematic structural diagram of a cooling fan and a fan bracket in one embodiment of the utility model;

[0032] Figure 5 This is a cross-sectional view of a pot cover according to an embodiment of the utility model, wherein the arrow indicates the airflow direction in the cooling air duct;

[0033] Figure 6 for Figure 5 Structural explosion view of the middle pot cover;

[0034] Figure 7 This is a schematic structural diagram of a supporting cantilever portion of the present invention in one embodiment;

[0035] Figure 8 This is a schematic structural diagram of a cover plate in one embodiment of the utility model;

[0036] Fig. 9 This is a cross-sectional view of an air-cooled cooking appliance according to an embodiment of the present invention, wherein the pot cover is in a flipped open state.

[0037] in:

[0038] 1 pot body; 11 outer pot; 12 inner pot; 121 food quantity mark; 1211 maximum food marking line; 1212 minimum food marking line; 122 extension section; 123 guide arc surface; 124 diameter reduction section; 125 guide cavity; 126 air cooling cavity; 13 cooling air duct; 14 exhaust port;

[0039] 2 pot cover; 21 pressure-bearing steel cover; 211 matching groove; 22 surface cover; 221 cover body; 222 cover plate; 2221 air outlet; 223 docking interface; 23 supporting cantilever; 231 positioning protrusion; 232 air inlet; 24 cooling air duct;

[0040] 3 cooling fan; 31 fan blade; 32 control unit;

[0041] 4 cooling fans;

[0042] 5 fan bracket; 51 guide blade; 52 baffle. DETAILED DESCRIPTION

[0043] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

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

[0045] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0048] like Figure 1 , Figure 2As shown, an air-cooled cooking utensil comprises a pot body 1 and a pot cover 2 covering the pot body 1, the pot body 1 comprises an outer pot 11 and an inner pot 12 placed in the outer pot 11, a cooling fan 3 is arranged on the side wall of the pot body 1, a food amount mark 121 is arranged on the side wall of the inner pot 12, the food amount mark 121 comprises a minimum marking line, a maximum marking line and a midline located between the maximum marking line and the minimum marking line, at least a portion of the area where the air outlet of the cooling fan 3 is projected toward the inner pot 12 is located above the midline so as to blow airflow to the area above the midline.

[0049] Preferably, the cooling fan 3 is a blowing fan that blows air outward, and is used to blow air between the outer pot 11 and the inner pot 12 to contact the inner pot 12 to cool it, so that the upper part of the inner pot 12 is located upstream of the flow channel, and the air blown in by the cooling fan 3 first contacts the upper part of the inner pot 12 to cool it, thereby improving the cooling efficiency of the upper part of the inner pot 12.

[0050] In the utility model, the projection of the air outlet of the cooling fan 3 on the pot body 1 toward the inner pot 12 is at least partially located above the median line. When the user cooks according to the correct usage requirements, the amount of food placed is between the maximum marking line and the minimum marking line. The median line of the food amount mark 121 is used as a height reference, which can meet the height relationship between the food amount and the cooling airflow in most cooking modes, thereby improving the versatility of the airflow direction design. So that during the pressure reduction stage of the cooking process, when the cooling fan 3 is working, at least part of the cooling air will be blown toward the area above the food in the inner pot 12, so that it will preferentially contact and cool down the area above the food in the inner pot 12, thereby increasing the priority of cooling down the upper part of the inner pot 12, and adjusting the original heat transfer route from water vapor in the inner pot 12 - food in the inner pot 12 - side wall of the inner pot 12 - cold air to water vapor in the inner pot 12 - side wall of the inner pot 12 - cold air, thereby shortening the heat transfer path, improving the heat transfer efficiency, and helping to quickly reduce the temperature of the gas in the inner pot 12, achieving rapid pressure relief, shortening the time it takes for users to open the lid, and thereby shortening the pressure cooking time.

[0051] In addition, the airflow of the cooling fan 3 flows toward the upper part of the inner pot 12 to cool down the hot steam on the upper part of the food in the inner pot 12, so that the efficiency of air cooling and pressure reduction will not be easily affected by the food in the lower part of the inner pot 12 and the heating device. The cooking program of the cooking utensil can more accurately control the pressure in the pot and calculate the pressure reduction time, so that on the pressure cooking utensil without a temperature measuring device on the top, more accurate temperature and pressure control can be achieved, ensuring the normal function of the cooking utensil, and the remaining time of each stage can be calculated more accurately to prompt the user, thereby improving the user experience.

[0052] Specifically, Figure 1As shown, the cooling fan 3 is arranged on one side of the inner liner 12, and its horizontal projection toward the inner liner 12 is located on the side wall of the inner liner 12, and at least part of the projection is located above the midline, so that when the cooling fan 3 blows, at least part of the wind flow will flow to the area above the midline to cool the area. It can be understood that the larger the area of ​​the projection above the midline, the more wind flow the cooling fan 3 supplies to the area above the midline.

[0053] It should be noted that the number, location and height of the food quantity mark 121 may be different in different specifications or models of the inner pot 12. The food quantity mark 121 in the present invention should be understood in a broad sense. For example, in one embodiment, when the side wall of the inner pot 12 is only provided with a group of food quantity marks 121, for example, when the inner pot 12 only marks the rice quantity scale and water level scale of rice, the food quantity mark 121 in the present invention indicates the corresponding rice quantity scale and water level scale, the maximum food marking line 1211 is the maximum scale of this group of food quantity marks 121 (the highest of the maximum rice quantity scale and the maximum water level scale), and the minimum food marking line 1212 is the minimum scale of this group of food quantity marks 121 (the lowest of the minimum rice quantity scale and the minimum water level scale). Alternatively, when the inner pot 12 only marks the water level line mark of the soup or porridge, the food amount mark 121 in the present invention represents the corresponding water level line mark, the maximum food mark line 1211 is the highest water level line of the soup or porridge, and the minimum food mark line 1212 is the minimum water level line of the soup or porridge.

[0054] In another embodiment, when the side wall of the inner pot 12 is only provided with two or more groups of food quantity markings 121, for example, the inner pot 12 not only marks the rice quantity scale and water level scale of rice, but also marks the water level line of soup or porridge, then the multiple groups of markings together constitute the food quantity markings 121 in the present invention. Among them, the highest scale line in the multiple groups of food quantity markings 121 constitutes the maximum food marking line 1211 in the present invention, and the lowest scale line in the multiple groups of food quantity markings 121 constitutes the minimum food marking line 1212 in the present invention, and the horizontal line where the midpoints of the vertical connection lines of the two on the side wall of the inner pot 12 are located is the median line.

[0055] Among them, the median line of the food quantity mark 121 can be a physical mark set on the side wall of the inner tank 12 by spraying, engraving, etc., or it can be non-physical, that is, no median line mark is set on the side wall of the inner tank 12. In this case, the median line can be determined by the horizontal line at the midpoint of the vertical line between the maximum food marking line 1211 and the minimum food marking line 1212 along the side wall of the inner tank 12.

[0056] It should be noted that, in the present invention, the projection area of ​​the air outlet of the cooling fan 3 toward the side wall of the inner liner 12 is located above the median line, so that part of the wind flow blown out by the cooling fan 3 is preferentially contacted with the upper part of the inner liner 12 to cool the high-temperature gas inside. It is understandable that the wind flow does not only flow in the upper part of the inner liner 12. Since there is also a gap between the lower part of the inner liner 12 and the outer pot 11, part of the wind flow also flows to the lower part of the inner liner 12. In other words, in the present invention, as long as part of the wind flow blown out by the cooling fan 3 can flow toward the upper part of the inner liner 12. In specific use, part of the wind flow can be naturally diverted when blowing toward the inner liner 12, part of the wind flow flows upward to cool the upper part of the inner liner 12, and part of the wind flow flows downward to cool the lower part of the inner liner 12. It is also possible to make the wind flow all upward, contact with the upper part of the inner liner 12 to cool it, and then flow downward to cool the lower part of the inner liner 12.

[0057] The utility model does not limit the way in which the cooling fan 3 blows cold air to the upper part of the inner tank 12, and it can be one of the following embodiments:

[0058] Implementation method 1: In this implementation method, Figure 1 , Figure 2 As shown, the central axis of the cooling fan 3 is located above the midline.

[0059] In this embodiment, the cooling fan 3 is positioned so that the central axis thereof is located above the median line, so that the airflow blown out by the cooling fan 3 flows more toward the area above the median line of the inner liner 12. It should be noted that in this embodiment, the air outlet of the cooling fan 3 can be horizontally oriented toward the inner liner 12, or can be tilted upward toward the inner liner 12 to further guide the airflow toward the upper part of the inner liner 12.

[0060] Implementation method 2: In this implementation method, Figure 2 , Figure 3 As shown, a guide portion is provided at the air outlet of the cooling fan 3, and the guide portion is inclined upward so that the airflow blown by the cooling fan 3 flows toward the center line.

[0061] In the present embodiment, the airflow blown out by the cooling fan 3 is guided by the guide portion extending obliquely upward, and the airflow is guided upward to the upper part of the inner pot 12, so that while the upper part of the inner pot 12 is cooled preferentially, the setting position of the cooling fan 3 is made more flexible. There is no need to set the cooling fan 3 at a higher position, and the arrangement position of the cooling fan 3 can be appropriately lowered, thereby optimizing the structural layout of the pot body 1, reducing the difficulty of installation and avoiding interference between the cooling fan 3 and other components of the pot body 1.

[0062] Embodiment 3: In this embodiment, a combination of the above-mentioned embodiments 1 and 2 can be adopted, that is, the central axis of the cooling fan 3 is located above the midline, and a guide portion is provided at the air outlet of the cooling fan 3 to further guide the airflow to the upper part of the inner tank 12.

[0063] As a preferred embodiment of the present invention, Figure 2 As shown, the side wall of the inner liner 12 has an extension section 122 and a diameter-reduced section 124 recessed toward the interior of the inner liner 12, and the diameter-reduced section 124 is located above the extension section 122. The cooling air duct 13 has a guide cavity 125 corresponding to the extension section 122, and an air-cooling cavity 126 corresponding to the diameter-reduced section 124, and the flow diameter of the air-cooling cavity 126 is larger than the flow diameter of the guide cavity 125.

[0064] The setting of the diameter reduction section 124 increases the width of the air cooling cavity 126, reduces the flow rate of the air flow in the air cooling cavity 126, and increases the contact area between the upper part of the inner liner 12 and the air flow, prolongs the contact time, can improve the heat exchange effect between the diameter reduction section 124 and the air flow, and improve the cooling efficiency of the upper part of the inner liner 12. The air flow blown by the cooling fan 3 enters the air cooling cavity 126 through the guidance of the guide cavity 125, and then flows around the inner liner 12 in the air cooling cavity, forming a cooling ring at the upper part of the inner liner 12, improving the cooling effect on the upper part of the inner liner 12, and achieving rapid pressure reduction.

[0065] Furthermore, if Figure 2 As shown, an air outlet 14 is provided between the edge of the inner pot 12 and the edge of the outer pot 11 , and the flow diameter of the air outlet 14 is smaller than the flow diameter of the air cooling cavity 126 .

[0066] The wind is fully in contact with the diameter reduction section 124 of the inner pot 12 in the wind cooling cavity 126, and after cooling it, it is discharged to the outside of the pot body 1 through the exhaust port 14. The flow diameter of the exhaust port 14 is smaller than the flow diameter of the wind cooling cavity 126, so that the wind is accelerated when passing through the exhaust port 14 and discharged at a faster flow rate, thereby improving the discharge efficiency of the wind. At the same time, the faster flow rate can form a negative pressure at the exhaust port 14, forming a suction force on the wind in the wind cooling cavity 126, thereby further accelerating the discharge of the wind in the wind cooling cavity 126, accelerating the wind circulation, and improving the heat exchange efficiency.

[0067] The utility model does not limit the shape of the inner liner 12. Preferably, the inner liner 12 is a spherical inner liner 12. Specifically, Figure 2 As shown, the extension section 122 extends in an arc shape to form a guide arc surface 123 on the inner wall of the guide cavity 125. The outer surface of the spherical inner liner 12 guides the airflow entering from the cooling fan 3 so that it flows more smoothly into the upper air cooling cavity 126, thereby improving the airflow flow efficiency and reducing the wind resistance during the airflow flow.

[0068] Of course, the inner liner 12 may also be in other shapes, such as a straight inner liner 12 with side walls extending vertically, etc., which is not limited here.

[0069] In a preferred embodiment, Figure 3 , Figure 4 As shown, the cooling fan 3 includes a control unit 32 and fan blades 31, and the air-cooled cooking appliance also includes a fan bracket 5. The cooling fan 3 is fixed to the outer pot 11 or the inner pot 12 through the fan bracket 5. The fan bracket 5 has guide blades 51 arranged corresponding to the fan blades 31, and a baffle 52 arranged corresponding to the control unit 32.

[0070] The cooling fan 3 is fixed between the outer pot 11 and the inner pot 12 through the fan bracket 5. Specifically, it can be fixed to the inner wall of the outer pot 11 or the outer wall of the inner pot 12, which is not limited here. At the same time, the fan bracket 5 can also play a role in guiding the wind flow. The guide blades 51 are arranged corresponding to the fan blades 31, so that the wind flow blown out by the fan blades 31 is guided by the guide blades 51 and flows upward. At the same time, the baffle 52 blocks the control part 32 of the cooling fan 3, which can block part of the heat radiated from the inner pot 12 to the control part 32, and the baffle 52 can reflect the heat of the inner pot 12 to a certain extent. Thereby reducing the heat radiated from the inner pot 12 to the control part 32, avoiding the aging and failure of the electrical components such as the chip of the control part 32 under the action of high temperature, and improving the service life of the cooling fan 3.

[0071] Preferably, if Figure 1 , Figure 5 As shown, the pot cover 2 includes a pressure-bearing steel cover 21 and an upper cover assembly, a cooling air duct 24 is provided between the pressure-bearing steel cover 21 and the upper cover assembly, the pot cover 2 is provided with a cooling fan 4 connected to the cooling air duct 24, a cooling air duct 13 is provided between the outer pot 11 and the inner pot 12, and the cooling air duct 24 and the cooling air duct 13 are isolated from each other.

[0072] The cooling fan 4 may be a blowing fan that blows air outward, and is used to blow air into the cooling air duct 24 to contact the pressure-bearing steel cover 21 to cool it. It may also be a suction fan. Under the suction effect of the cooling fan 4, the external airflow enters the cooling air duct 24 of the pot cover 2 from the air inlet 232 on the pot cover 2, contacts the pressure-bearing steel cover 21 to cool it, and then is discharged from the cooling fan 4.

[0073] One of the cooling fan 4 and the cooling fan 3 may be a suction fan and the other may be a blowing fan, which is not limited here.

[0074] The wind flow formed by the cooling fan 4 is only used to cool the pressure-bearing steel cover 21, and can flow and circulate in the cooling air duct 24 alone, but cannot flow into the cooling air duct 13 of the pot body 1. The wind flow formed by the cooling fan 3 is only used to cool the inner pot 12, and flows and circulates in the cooling air duct 13 alone, and cannot flow into the cooling air duct 24 of the pot cover 2. In this way, during the depressurization process, the cooling fan 3 and the cooling fan 4 can independently cool the pressure-bearing steel cover 21 and the inner pot 12, increase the contact area between the cold air and the inner pot 12 and the pressure-bearing steel cover 21, and improve the heat exchange efficiency. Moreover, the wind flow formed by the cooling fan 3 and the cooling fan 4 flows and circulates in their respective air ducts, and cannot be mixed, avoiding heat exchange between the two wind flows, always making the wind flow with a lower temperature contact with the pressure-bearing steel cover 21 and the inner pot 12, ensuring heat exchange efficiency, thereby shortening the overall depressurization time, helping to quickly open the cover, and improving the user experience.

[0075] Furthermore, the air-cooled cooking appliance has a first control unit and a second control unit, the first control unit is electrically connected to the cooling fan 3 for controlling the cooling fan 3 , and the second control unit is electrically connected to the cooling fan 4 for controlling the cooling fan 4 .

[0076] In the present embodiment, the cooling fan 3 and the temperature reduction fan 4 are respectively controlled and operated by independent control units, so that the setting of the start timing and the operating time of the cooling fan 3 and the temperature reduction fan 4 is more flexible. The cooling fan 3 and the temperature reduction fan 4 can be started and operated together to cool the pressure-bearing steel cover 21 and the inner liner 12 at the same time to improve the cooling efficiency. One of them can also be started separately to cool the pressure-bearing steel cover 21 or the inner liner 12 in a targeted manner. The cooling fan 3 and the temperature reduction fan 4 can also be started and stopped in sequence, or each can be operated for a specific length of time, or the two can be operated alternately, and so on.

[0077] Preferably, the cooling fan 3 has a first speed and the cooling fan 4 has a second speed, and the first speed is greater than the second speed, through the first control unit and the second control unit. The volume of the liner 12 is large, and more cold air is often required to ensure a better cooling effect. Therefore, the speed of the cooling fan 3 can be greater than that of the cooling fan 4, so that it can supply more cold air to the cooling air duct 13.

[0078] The utility model does not limit the structure of the pot cover 2. In a preferred embodiment, Figure 5 , Figure 6 As shown, the upper cover assembly includes a surface cover 22 located above the pressure-bearing steel cover 21, and a supporting cantilever 23 located above the surface cover 22. The cooling air duct 24 is located between the surface cover 22 and the pressure-bearing steel cover 21. The cooling fan 4 is arranged on the supporting cantilever 23. The surface cover 22 is provided with a docking port 223 for connecting the cooling fan 4 and the cooling air duct 24.

[0079] The cooling fan 4 is arranged in the supporting cantilever 23. During the cooking process, the cooling fan 4 will not directly contact the cooking environment in the pot body 1. Therefore, the oil smoke, water vapor and food residues in the pot will not reach the cooling fan 4 in the supporting cantilever 23, which ensures the cleanliness of the cooling fan 4 and reduces the cleaning pressure of the user. In addition, since the cooling fan 4 is arranged outside the cover 22, the structure of the cover 22 is simpler and lighter, which has significant advantages for the removable cover 22 structure, and the user can take the cover 22 with more effort. Moreover, the user can directly rinse the cover 22, making the cleaning of the cover 22 simpler and more convenient, and the cleaning is more comprehensive and thorough, improving the user experience.

[0080] In this embodiment, if Figure 1 , Fig. 9 As shown, the support cantilever 23 can rotate relative to the surface cover 22 (flip up and down or rotate horizontally), and the surface cover 22 can be fixed to or removed from the support cantilever 23, so that the user can open the surface cover 22 together by rotating the support cantilever 23, or remove the surface cover 22 from the support cantilever 23 for cleaning separately.

[0081] Specifically, Figure 5 , Fig. 9 As shown, the support cantilever 23 is provided with a positioning protrusion 231 protruding downward, and the cooling fan 4 is located inside the positioning protrusion 231. When the support cantilever 23 is rotated into place, the positioning protrusion 231 is plugged into the docking port 223 to achieve the connection between the cooling fan 4 and the cooling air duct 24. At the same time, the positioning protrusion 231 cooperates with the docking port 223 to position the installation of the support cantilever 23 and the cover 22.

[0082] Furthermore, the docking port 223 is located at the center of the cover 22, and the positioning protrusion 231 is correspondingly arranged to achieve center positioning and improve positioning accuracy.

[0083] Furthermore, if Figure 6 , Figure 7 As shown, the surface cover 22 includes a cover body 221 and a cover plate 222 detachably fixed to the central area of ​​the cover body 221, the pressure-bearing steel cover 21 is provided with a matching groove 211 corresponding to the cover plate 222, the cover plate 222 cooperates with the matching groove 211 to form a cooling air duct 24, the supporting cantilever 23 is provided with an air inlet 232 connected to the cooling fan 4, and the cover plate 222 is provided with an air outlet 2221 connected to the cooling air duct 24.

[0084] like Figure 5As shown, the cover body 221 and the pressure-bearing steel cover 21 are sealed at the periphery of the matching groove 211, and a cooling air duct 24 is formed only at the matching groove 211, so that the cooling air duct 24 is isolated from the internal space of the pot cover 2. When cooling the matching groove 211, since the pressure-bearing steel cover 21 is made of metal, it can cool other areas of the pressure-bearing steel cover 21 through its own heat transfer performance, but the cooling air flow can only flow in the space surrounded by the cover plate 222 and the matching groove 211, so the air flow will not blow oil stains and food residues into other gaps inside the pot cover 2, making it impossible to clean. At the same time, the water vapor, smoke, etc. inside the pot cover 2 will not enter the cooling air duct 24 with the air flow, ensuring the cleanliness of the cooling air duct 24 and reducing the cleaning pressure of the user.

[0085] When the cover plate 222 is removed from the cover body 221, the cooling air duct 24 is exposed on the surface of the face cover 22, so that the user can wipe and clean the inside of the cooling air duct 24 conveniently, and the user can directly rinse the face cover 22, making the cleaning of the face cover 22 simpler and more convenient, and the cleaning is more comprehensive and thorough, thereby improving the user experience.

[0086] Preferably, a sealing ring is provided between the cover plate 222 and the cover body 221 , and the cover plate 222 is inserted into the opening reserved in the cover body 221 through interference fit to achieve fixation and sealing.

[0087] Specifically, Figure 7 , Figure 8 As shown, the air inlet 232 is opened on the side wall of the supporting cantilever 23 , and the air outlets 2221 are arranged at intervals along the circumference of the cover plate 222 to surround the cooling fan 4 .

[0088] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0089] 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.

[0090] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An air-cooled cooking utensil, comprising a pot body and a pot cover covering the pot body, wherein the pot body comprises an outer pot and an inner pot placed in the outer pot, characterized in that: A cooling fan is provided on the side wall of the pot body, and a food amount mark is provided on the side wall of the inner pot, wherein the food amount mark includes a minimum marking line, a maximum marking line, and a median line located between the maximum marking line and the minimum marking line, and at least a portion of the area where the air outlet of the cooling fan is projected toward the inner pot is located above the median line to blow air to the area above the median line.

2. The air-cooled cooking appliance according to claim 1, characterized in that: The central axis of the cooling fan is located above the midline.

3. The air-cooled cooking appliance according to claim 1 or 2, characterized in that: The air outlet of the cooling fan is provided with a guide portion, and the guide portion is arranged to be inclined upward so that the airflow blown by the cooling fan flows toward the upper side of the midline.

4. The air-cooled cooking appliance according to claim 1, characterized in that: The side wall of the inner pot has an extension section and a diameter-reduced section recessed toward the interior of the inner pot, the diameter-reduced section is located above the extension section, a cooling air duct is provided between the outer pot and the inner pot, the cooling air duct has a guide cavity corresponding to the extension section, and an air-cooling cavity corresponding to the diameter-reduced section, and a flow diameter of the air-cooling cavity is greater than a flow diameter of the guide cavity.

5. The air-cooled cooking appliance according to claim 4, characterized in that: The extension section extends in an arc shape to form a flow-guiding arc surface on the inner wall of the guide cavity.

6. The air-cooled cooking appliance according to claim 4, characterized in that: An air outlet is provided between the edge of the inner pot and the edge of the outer pot, and the flow diameter of the air outlet is smaller than the flow diameter of the air cooling cavity.

7. The air-cooled cooking appliance according to claim 1, characterized in that: The cooling fan includes a control unit and fan blades, and the air-cooled cooking appliance also includes a fan bracket. The cooling fan is fixed to the outer pot or the inner pot through the fan bracket. The fan bracket has guide blades arranged corresponding to the fan blades, and a baffle arranged corresponding to the control unit.

8. The air-cooled cooking appliance according to claim 1, characterized in that: The pot cover includes a pressure-bearing steel cover and an upper cover assembly, a cooling air duct is provided between the pressure-bearing steel cover and the upper cover assembly, the pot cover is provided with a cooling fan connected to the cooling air duct, a cooling air duct is provided between the outer pot and the inner pot, and the cooling air duct is isolated from the cooling air duct.

9. The air-cooled cooking appliance according to claim 8, characterized in that: The cooling fan has a first rotation speed, and the temperature reduction fan has a second rotation speed, and the first rotation speed is greater than the second rotation speed.

10. The air-cooled cooking appliance according to claim 8, characterized in that: The upper cover assembly includes a surface cover located above the pressure-bearing steel cover, and a supporting cantilever located above the surface cover, the cooling air duct is located between the surface cover and the pressure-bearing steel cover, the cooling fan is arranged on the supporting cantilever, and the surface cover is provided with a docking port for connecting the cooling fan and the cooling air duct.

Images