Cooking utensil

Abstract

The utility model belongs to the technical field of kitchen appliances, and discloses a cooking utensil which comprises an outer cover, a heat preservation cover arranged in the outer cover, a circuit board and a cooling fan, the circuit board and the cooling fan are arranged between the outer cover and the heat preservation cover, an air inlet corresponding to the cooling fan is formed in the side portion of the outer cover, the heat preservation cover is provided with an air outlet, and the circuit board is provided with a heat dissipation piece. An air guide part is further arranged between the outer cover and the heat preservation cover, and the air guide part is provided with a first cooling air duct communicating the cooling fan and the heat dissipation part and a second cooling air duct communicating the cooling fan and the air outlet. Therefore, the number of required cooling fans is reduced, the production cost of the cooking utensil is reduced, meanwhile, due to the fact that the number of the cooling fans is reduced, the energy consumption of the cooking utensil is reduced, the use cost of a user is reduced, noise generated when the cooking utensil works is reduced, and the use experience of the user is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of kitchen 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 cooking, making it difficult to clean the inner pot after eating, resulting in a poor user experience.

[0003] In order to solve this technical problem, the applicant has previously applied for a patent for the water-moisturizing film 0 coating technology. A fan is arranged on the pot body so that the airflow formed when the fan is working can 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 liquefy into condensed water, forming a layer of water film between the inner wall of the inner pot and the food, preventing the food from sticking to the inner wall of the inner pot and achieving a non-stick effect.

[0004] In addition, a circuit board is also provided in the pot body. When the cooking appliance is working, the circuit board will generate heat, and then a fan needs to be provided in the pot body to cool it down to ensure the normal operation of the cooking appliance; since both the inner pot and the circuit board need to be cooled by fans, the cooking appliance needs to be provided with at least two fans, and each fan needs to be provided with an air guide structure, so that the airflow formed by one of the fans moves to the circuit board under the action of the corresponding air guide structure and cools the circuit board, and the airflow formed by the other fan contacts the inner pot under the action of the corresponding air guide structure and cools the inner pot, thereby increasing the production cost of the cooking appliance, while increasing the energy consumption of the cooking appliance, affecting the user experience. Utility Model Content

[0005] The present application provides a cooking utensil to reduce the production cost and energy consumption of the cooking utensil and improve the user experience.

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

[0007] A cooking appliance comprises an outer cover, a heat preservation cover arranged in the outer cover, and a circuit board and a cooling fan arranged between the outer cover and the heat preservation cover, wherein the side of the outer cover is provided with an air inlet corresponding to the cooling fan, the heat preservation cover is provided with an air outlet, the circuit board is provided with a heat sink, and an air guide is further provided between the outer cover and the heat preservation cover, the air guide having a first cooling air duct connecting the cooling fan and the heat sink, and a second cooling air duct connecting the cooling fan and the air outlet.

[0008] The cooking appliance described in this application also includes the following additional technical features:

[0009] The air guide member has a guide surface facing the outer cover, the guide surface has a raised portion protruding toward the outer cover, at least a portion of the first cooling air duct is located on one side of the raised portion, and at least a portion of the second cooling air duct is located on the other side of the raised portion.

[0010] The air guide member includes an outer shell, and an air guide cavity is provided inside the air guide member. The first cooling air duct and the second cooling air duct are both located in the air guide cavity. The outer cover is provided with an air guide port connected to the air guide cavity, and the cooling fan is arranged at the air guide port.

[0011] The cooling fan is in abutment and sealed against the edge of the air guide port;

[0012] Alternatively, there is a gap between the cooling fan and the air guide port.

[0013] The air guide member is further provided with a first air guide port connected to the first cooling air duct and a second air guide port connected to the second cooling air duct, the edge of the first air guide port abuts against the heat sink, and the second air guide port is connected to the air outlet.

[0014] The horizontal projection of the circuit board is located on the cooling fan, so that at least a portion of the circuit board constitutes the air guide, and the circuit board divides the space between the outer cover and the thermal insulation cover into a first cooling area located on one side of the circuit board and a second cooling area located on the other side of the circuit board, the heat sink is located in the first cooling area, and the thermal insulation cover is located in the second cooling area.

[0015] The heat preservation cover is eccentrically placed inside the outer cover so that there is a first gap between one side of the heat preservation cover and the outer cover, and a second gap between the other side of the heat preservation cover and the outer cover, the first gap is larger than the second gap, and the cooling fan and the circuit board are arranged in the first gap.

[0016] The air guide member includes a guide plate, the guide plate has a guide surface facing the cooling fan, and a fixing portion is provided on a side of the guide surface facing away from the cooling fan.

[0017] An air inlet grille is provided at the air inlet, and the air inlet grille has positioning convex ribs extending toward the inside of the outer cover, and the positioning convex ribs cooperate with the air inlet for positioning.

[0018] The positioning ribs enclose a mounting area, and the cooling fan is located in the mounting area.

[0019] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0020] 1. The cooking appliance in the present application comprises an outer cover, a heat preservation cover arranged in the outer cover, and a circuit board and a cooling fan arranged between the outer cover and the heat preservation cover, wherein an air inlet is arranged on a side of the outer cover corresponding to the cooling fan, an air outlet is arranged on the heat preservation cover, a heat sink is arranged on the circuit board, and an air guide is arranged between the outer cover and the heat preservation cover, wherein the air guide comprises a first cooling air duct connecting the cooling fan and the heat sink and a second cooling air duct connecting the cooling fan and the air outlet, so that when the cooling fan is working, the air flow generated by the cooling fan flows to the heat sink via the first cooling air duct, and then the air flow cools the heat sink, thereby the heat sink cools the circuit board, so as to reduce the temperature rise of the circuit board and ensure the stability of the cooking appliance when working; at the same time, the air generated by the cooling fan The air flows through the second cooling air duct to the air outlet, so that the air flow passes through the air outlet to cool the inner pot, and then a moist film is formed between the inner pot and the food, so as to achieve the effect of preventing the food from adhering to the inner pot; the cooking appliance in the present application only needs a single cooling fan to cool the circuit board and the inner pot, thereby reducing the number of required cooling fans, and only needs to set an air guide member to divide the air flow generated by the cooling fan into two streams and flow to the heat sink and the inner pot respectively, thereby reducing the production cost of the cooking appliance. At the same time, since the number of cooling fans is reduced, the energy consumption of the cooking appliance is reduced, so as to reduce the user's use cost, and the noise generated when the cooking appliance is working is reduced, thereby improving the user's use experience.

[0021] In addition, since the air inlet is arranged on the side of the outer cover, compared with the case where the air inlet is arranged at the bottom of the outer cover, the countertop on which the cooking utensils are placed blocks the cold air, so that the cold air enters the inner part of the outer cover more smoothly, the air intake efficiency of the cold air is improved, and the cooling effect on the circuit board and the inner pot is improved, and the energy consumption of the cooking utensils is further reduced. In addition, the dust falling on the countertop is prevented from entering the inner part of the outer cover under the action of the airflow, thereby increasing the cleanliness of the cold air entering the inner part of the outer cover, and further ensuring the heat dissipation efficiency of the circuit board and the cleanliness of the inner part of the cooking utensils.

[0022] 2. As a preferred embodiment of the present application, the air guide member has a guide surface facing the outer cover, the guide surface has a bulge protruding toward the outer cover, at least a portion of the first cooling air duct is located on one side of the bulge, and at least a portion of the second cooling air duct is located on the other side of the bulge, so that the airflow generated by the cooling fan can quickly flow to the heat sink and quickly flow to the air outlet under the action of the bulge and the guide surface, thereby achieving the effect of quickly cooling the circuit board and the inner liner; at the same time, the arrangement of the bulge and the guide surface makes the airflow direction in the first cooling air duct toward the heat sink, and the airflow direction in the second cooling air duct toward the air outlet, so as to ensure the smoothness of the airflow flow and improve the cooling effect on the circuit board and the inner liner; in addition, the first cooling air duct and the second cooling air duct are isolated from each other to avoid the situation where the airflow always flows toward the side with lower air pressure due to the different air pressure at the heat sink and the air outlet, thereby ensuring the cooling effect on the circuit board and the inner liner.

[0023] 3. As a preferred embodiment of the present application, the air guide is further provided with a first air guide port connected to the first cooling air duct and a second air guide port connected to the second cooling air duct, the edge of the first air guide port abuts against the heat sink, and the second air guide port is connected to the air outlet, so that the airflow in the first cooling air duct is directly blown to the heat sink via the first air guide port and cools the heat sink, thereby realizing the cooling of the circuit board, and the airflow in the second cooling air duct is directly blown to the air outlet via the second air guide port, thereby realizing the cooling of the inner tank, so as to improve the cooling efficiency of the circuit board and the inner tank, shorten the working time of the cooling fan during the cooking process, thereby further reducing the energy consumption of the cooking appliance, and further improving the user experience.

[0024] 4. As a preferred embodiment of the present application, the horizontal projection of the circuit board is located on the cooling fan, so that at least a part of the area of ​​the circuit board constitutes an air guide, thereby reducing the components required for the cooking utensil, further reducing the production cost of the cooking utensil, and reducing the number of components required to be assembled when assembling the cooking utensil, so as to improve the assembly efficiency of the cooking utensil; the circuit board divides the space between the outer cover and the heat preservation cover into a first cooling area located on one side of the circuit board and a second cooling area located on the other side of the circuit board, the heat sink is located in the first cooling area, and the heat preservation cover is located in the second cooling area, so that the airflow generated when the cooling fan is working flows to the first cooling area and the second cooling area under the action of the circuit board, the airflow flowing to the first cooling area dissipates heat for the heat sink, and the airflow flowing to the second cooling area enters the inner side of the heat preservation cover through the air outlet to cool the inner pot, in this process, the pressure of the airflow is reduced, so that the airflow flows more smoothly, and at the same time, the airflow entering the first cooling area and the second cooling area can both contact the circuit board, thereby improving the cooling efficiency of the circuit board.

[0025] 5. As a preferred embodiment of the present application, the heat preservation cover is eccentrically placed inside the outer cover so that there is a first gap between one side of the heat preservation cover and the outer cover, and a second gap between the other side of the heat preservation cover and the outer cover, the first gap is larger than the second gap, and the cooling fan and the circuit board are arranged in the first gap. That is to say, the cooling fan and the circuit board are installed on the side with a larger space between the heat preservation cover and the outer cover to achieve the effect of facilitating the assembly personnel to assemble the circuit board and the cooling fan, thereby improving the assembly efficiency of the cooking appliance, and at the same time increasing the heat dissipation space of the circuit board to improve the heat dissipation efficiency of the circuit board. In addition, the internal space of the outer cover can be reasonably utilized to improve the space utilization rate inside the outer cover, which is conducive to the miniaturization design of the cooking appliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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:

[0027] Figure 1 This is a partial structural schematic diagram of a cooking utensil according to one embodiment of the present application;

[0028] Figure 2 This is a partial structural schematic diagram of the cooking appliance in one embodiment of the present application, mainly showing the positional relationship between the circuit board, the cooling fan and the heat preservation cover;

[0029] Figure 3 An exploded view of a portion of the structure of the cooking utensil in one embodiment of the present application;

[0030] Figure 4 This is a schematic structural diagram of the air guide member described in one implementation mode of the present application;

[0031] Figure 5 This is a schematic structural diagram of the air guide member according to one embodiment of the present application from another viewing angle;

[0032] Figure 6 This is a schematic diagram of the structure of the air outlet grille described in one embodiment of the present application;

[0033] Figure 7 This is a schematic structural diagram of the air inlet grille described in one embodiment of the present application.

[0034] Reference numerals:

[0035] 1. outer cover; 11. outer shell; 111. air inlet; 112. air inlet grille; 113. positioning ribs; 114. fixing ribs; 12. base; 121. fixing bracket; 122. limiting column;

[0036] 2. Insulation cover; 21. Air outlet;

[0037] 3. Circuit board; 31. Heat sink;

[0038] 4. Cooling fan;

[0039] 5. air guide; 51. housing; 511. fixing column; 512. first air guide port; 513. second air guide port; 514. air outlet grille; 515. connecting rib; 516. positioning column; 52. air guide plate; 521. fixing part;

[0040] 6. Heating device; 61. Connecting ear;

[0041] 7. Inner liner. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "circumferential", etc. 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 should not be understood as a limitation on the present application.

[0045] 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 this application can be understood according to specific circumstances.

[0046] 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.

[0047] Reference Figure 1 , Figure 2 and Figure 3 A cooking utensil comprises an outer cover 1, a heat preservation cover 2 arranged in the outer cover 1, and a circuit board 3 and a cooling fan 4 arranged between the outer cover 1 and the heat preservation cover 2. The side of the outer cover 1 is provided with an air inlet 111 corresponding to the cooling fan 4, the heat preservation cover 2 is provided with an air outlet 21, the circuit board 3 is provided with a heat sink 31, and an air guide 5 is further provided between the outer cover 1 and the heat preservation cover 2. The air guide 5 has a first cooling air duct connecting the cooling fan 4 and the heat sink 31 and a second cooling air duct connecting the cooling fan 4 and the air outlet 21.

[0048] When the cooling fan 4 is working, the airflow generated by the cooling fan 4 flows to the heat sink 31 via the first cooling air duct, and then the airflow cools the heat sink 31, so that the heat sink 31 cools the circuit board 3, so as to reduce the temperature rise of the circuit board 3 and ensure the stability of the cooking appliance when it is working; at the same time, the airflow generated by the cooling fan 4 flows to the air outlet 21 via the second cooling air duct, so that the airflow passes through the air outlet 21 and contacts the inner pot 7 and cools the inner pot 7, and then a moist film is formed between the inner pot 7 and the food, so as to prevent the food from adhering to the inner pot 7.

[0049] The cooking appliance in the present application only needs a single cooling fan 4 to cool the circuit board 3 and the inner pot 7 at the same time, thereby reducing the number of cooling fans 4 required to be arranged in the cooking appliance, and only one air guide 5 is required to be set so that the airflow generated by the cooling fan 4 is divided into two streams and flows to the heat sink 31 and the inner pot 7 respectively, thereby reducing the production cost of the cooking appliance. At the same time, since the number of cooling fans 4 is reduced, the energy consumption of the cooking appliance is reduced, thereby reducing the user's use cost, and the noise generated when the cooking appliance is working is reduced, thereby improving the user's use experience.

[0050] In addition, since the air inlet 111 is arranged at the side of the outer cover 1, compared with the case where the air inlet 111 is arranged at the bottom of the outer cover 1, the countertop on which the cooking utensils are placed is prevented from blocking the cold air, so that the cold air can enter the inner part of the outer cover 1 more smoothly, and the air intake efficiency of the cold air is improved, thereby improving the cooling effect of the circuit board 3 and the inner pot 7, and further reducing the energy consumption of the cooking utensils. In addition, the dust falling on the countertop is prevented from entering the inner part of the outer cover 1 under the action of the airflow, thereby increasing the cleanliness of the cold air entering the inner part of the outer cover 1, and further ensuring the heat dissipation efficiency of the circuit board 3 and the cleanliness of the inner part of the cooking utensils.

[0051] It should be noted that, in the prior art, when the cooking appliance is working, the circuit board 3 will continue to generate heat, and then the circuit board 3 needs to be continuously cooled, and the cooling of the inner pot 7 to form a moist film between the inner pot 7 and the food only needs to be performed near the end of the food cooking stage; and the cooling fan 4 in the present application only works in the later stage of the cooking stage, such as the stewing stage of rice. On the one hand, a moist film can be formed between the inner pot 7 and the food, and on the other hand, the circuit board 3 has been working for a period of time at this time, and then the cooling fan 4 has a better cooling effect on the circuit board 3. Since the cooling fan 4 of the present application does not work in the heating stage, the influence of the cooling fan 4 on the heating process of the inner pot 7 is avoided, thereby ensuring the heating efficiency of the inner pot 7, and then ensuring the cooking efficiency of the cooking appliance.

[0052] The present application does not specifically limit the structure of the heat sink 31, which may adopt any one of the following embodiments:

[0053] Embodiment 1. In this embodiment, the heat sink 31 is a heat sink provided on the circuit board 3. The heat sink has a heat dissipation gap on one side close to the air guide 5, so that the airflow flowing to the heat sink through the first cooling air duct enters the heat dissipation gap and exchanges heat with the heat sink, so as to increase the contact area between the airflow and the heat sink 31, thereby improving the cooling effect and cooling efficiency of the circuit board 3.

[0054] Embodiment 2. In this embodiment, the heat sink 31 is a heat sink shell provided on the circuit board 3. The heat sink shell has a heat conduction cavity inside. The heat conduction cavity is filled with superconducting material or the heat conduction cavity is evacuated. When the airflow contacts the heat sink shell, the cold energy is quickly transferred to the circuit board 3 through the heat sink 31, thereby realizing rapid cooling of the circuit board 3, thereby improving the cooling effect and cooling efficiency of the circuit board 3.

[0055] In a preferred embodiment, the air guide member 5 has a guide surface facing the outer cover 1, the guide surface has a raised portion protruding toward the outer cover 1, at least a portion of the first cooling air duct is located on one side of the raised portion, and at least a portion of the second cooling air duct is located on the other side of the raised portion.

[0056] The airflow generated by the cooling fan 4 flows rapidly to the heat sink 31 and the air outlet 21 under the action of the raised portion and the guide surface, thereby achieving the effect of quickly cooling the circuit board 3 and the inner liner 7; at the same time, the setting of the raised portion and the guide surface makes the airflow direction in the first cooling air duct all toward the heat sink 31, and the airflow direction in the second cooling air duct all toward the air outlet 21, so as to ensure the smoothness of the airflow flow and improve the cooling effect on the circuit board 3 and the inner liner 7; in addition, the first cooling air duct and the second cooling air duct are isolated from each other to avoid the situation where the air pressure at the heat sink 31 and the air outlet 21 are different, causing the air flow to always flow toward the side with lower pressure, thereby ensuring the cooling effect on the circuit board 3 and the inner liner 7.

[0057] The present application does not specifically limit the method for forming the raised portion. Preferably, refer to Figure 1 , Figure 2 and Figure 4 The guide surface has an arc-shaped wall body protruding toward the outer cover 1, and the arc-shaped wall body constitutes a ridge, and at the same time improves the guiding effect of the ridge on the airflow, so that the airflow flows more smoothly to the heat sink 31 and the air outlet 21 under the action of the ridge and the guide surface, ensuring the cooling effect and cooling efficiency of the circuit board 3 and the inner tank 7. In other embodiments, the ridge is a block structure provided on the guide surface.

[0058] It should be noted that the raised portion can contact the cooling fan 4 so that the first cooling air duct is entirely located on one side of the raised portion, and the second cooling air duct is entirely located on the other side of the raised portion; the raised portion may also have a gap with the cooling fan 4 so that a partial area of ​​the first cooling air duct is located on one side of the raised portion, and a partial area of ​​the second cooling air duct is located on the other side of the raised portion.

[0059] The present application does not specifically limit the structure of the air guide member 5, which may adopt any one of the following embodiments:

[0060] Embodiment 1. In this embodiment, the horizontal projection of the circuit board 3 is located on the cooling fan 4, so that at least a portion of the circuit board 3 constitutes an air guide 5. The circuit board 3 divides the space between the outer cover 1 and the thermal insulation cover 2 into a first cooling area located on one side of the circuit board 3 and a second cooling area located on the other side of the circuit board 3. The heat sink 31 is located in the first cooling area, and the thermal insulation cover 2 is located in the second cooling area.

[0061] That is to say, the airflow generated by the cooling fan 4 enters the first cooling area and the second cooling area under the action of the circuit board 3, and then the circuit board 3 also plays a role in guiding the airflow generated by the cooling fan 4, thereby reducing the components required for the cooking appliance, further reducing the production cost of the cooking appliance, and at the same time reducing the number of components required to assemble the cooking appliance, so as to improve the assembly efficiency of the cooking appliance.

[0062] The circuit board 3 divides the space between the outer cover 1 and the heat preservation cover 2 into a first cooling area and a second cooling area, so that the airflow generated by the cooling fan 4 when working flows to the first cooling area and the second cooling area under the action of the circuit board 3. The airflow flowing to the first cooling area dissipates heat for the heat sink 31, and the airflow flowing to the second cooling area enters the inner side of the heat preservation cover 2 through the air outlet 21 to cool the inner tank 7. In this process, the pressure of the airflow is reduced, thereby making the airflow flow smoother. At the same time, the airflow entering the first cooling area and the second cooling area can both contact with the circuit board 3, thereby improving the cooling efficiency of the circuit board 3.

[0063] It should be noted that the horizontal projection of the circuit board 3 is located on the cooling fan 4, and it can be that at least a part of the projection of the circuit board 3 toward the cooling fan 4 is located on the cooling fan 4, that is, the projection of the circuit board 3 close to one end of the cooling fan 4 is located on the cooling fan 4, and at this time the circuit board 3 is set at an angle to the axial direction of the cooling fan 4; it can also be that the projection of the circuit board 3 toward the cooling fan 4 is entirely located on the cooling fan 4, and at this time the circuit board 3 is set parallel to the axial direction of the cooling fan 4.

[0064] Implementation method 2. In this implementation method, refer to Figures 1 to 5 The air guide member 5 includes a shell 51, and an air guide cavity is provided inside the air guide member 5. The first cooling air duct and the second cooling air duct are both located in the air guide cavity. The outer cover 1 is provided with an air guide port connected to the air guide cavity, and the cooling fan 4 is arranged at the air guide port.

[0065] That is to say, the shell 51 has an air guide cavity inside, so that the airflow generated by the cooling fan 4 directly enters the air guide cavity through the air guide port, and then the airflow enters the first cooling air duct and the second cooling air duct, thereby improving the utilization rate of the airflow and further improving the cooling effect on the circuit board 3 and the inner tank 7.

[0066] The present application does not specifically limit the positional relationship between the cooling fan 4 and the air guide port, and any one of the following embodiments may be adopted:

[0067] Embodiment 1. In this embodiment, there is a gap between the cooling fan 4 and the air guide port, so that the airflow generated by the cooling fan 4 can flow to the outside of the air guide cavity in the gap between the cooling fan 4 and the air guide port, so that the airflow flowing to the outside of the air guide cavity contacts with the circuit board 3, so as to increase the contact area between the airflow and the circuit board 3, thereby increasing the cooling efficiency and cooling effect of the circuit board 3, and ensuring the normal operation of the cooking appliance.

[0068] Embodiment 2, in this embodiment, refer to Figure 1 and Figure 2 The cooling fan 4 is sealed against the edge of the air guide port, so that all the airflow generated by the cooling fan 4 enters the air guide cavity, thereby improving the utilization rate of the airflow, so that more airflow contacts the inner liner 7 through the air outlet 21, and further improving the cooling effect and cooling efficiency of the inner liner 7. At the same time, the air guide 5 can support the cooling fan 4 to increase the stability of the cooling fan 4, reduce the risk of noise generated by the cooling fan 4 when working due to unreliable fixation, and further improve the user experience.

[0069] Further, see Figure 1 and Figure 2 An extension portion is extended at the air guide port to form an installation channel, and the cooling fan 4 extends into the installation channel to further increase the stability of the cooling fan 4 and the air tightness between the cooling fan 4 and the air guide port, thereby ensuring the cooling effect and cooling efficiency of the inner tank 7.

[0070] The present application does not specifically limit the structure of the extension portion. Preferably, refer to Figure 1 and Figure 2 , the extension part is arranged around the air guide port, that is, the extension part is an annular structure to increase the contact area between the extension part and the cooling fan 4, thereby further increasing the stability of the cooling fan 4, and further increasing the air tightness between the air guide port and the cooling fan 4 to ensure the cooling effect on the liner 7. In other implementation examples, the extension part can also be a plurality of block structures arranged at intervals along the circumference of the air guide port.

[0071] Further, refer to Figure 3 , Figure 4 and Figure 5The cavity wall of the air guide cavity is provided with a fixing column 511, and the cooling fan 4 is in contact with the fixing column 511, so that the fixing column 511 limits the support of the cooling fan 4, so as to further increase the stability of the cooling fan 4, and at the same time, it is convenient for the assembler to control the depth of the cooling fan 4 extending into the installation channel, so as to keep the performance of the cooking utensil consistent, which is beneficial to control the consistency of the production quality of the cooking utensil; and the cooling fan 4 is provided with a screw threaded into the fixing column 511 to realize the fixed connection between the cooling fan 4 and the air guide member 5, so as to further increase the stability of the cooling fan 4, and at the same time reduce the difficulty of fixing the cooling fan 4, and improve the assembly efficiency of the cooking utensil.

[0072] In a preferred embodiment, referring to Figure 3 , Figure 4 and Figure 5 The air guide 5 is also provided with a first air guide port 512 connected to the first cooling air duct and a second air guide port 513 connected to the second cooling air duct. The edge of the first air guide port 512 abuts against the heat sink 31, and the second air guide port 513 is connected to the air outlet 21.

[0073] That is to say, the airflow in the first cooling air duct is blown directly to the heat sink 31 via the first air guide port 512 and cools the heat sink 31, thereby cooling the circuit board 3. The airflow in the second cooling air duct is blown directly to the air outlet 21 via the second air guide port 513, thereby cooling the inner pot 7, so as to improve the cooling efficiency of the circuit board 3 and the inner pot 7, shorten the working time of the cooling fan 4 during the cooking process, and further reduce the energy consumption of the cooking appliance, thereby further improving the user experience.

[0074] It should be noted that the above-mentioned second air guide port 513 is connected to the air outlet 21, and the air guide member 5 may be in contact with the heat preservation cover 2, so that the second air guide port 513 is opposite to the air outlet 21 and the two are connected, so that more airflow enters the air outlet 21 directly through the second air guide port 513, and the cooling efficiency of the inner liner 7 is further improved; there may also be a gap between the air guide member 5 and the heat preservation cover 2, but the second air guide port 513 is opposite to the air outlet 21, so that the second air guide port 513 is connected to the air outlet 21; furthermore, the second air guide port 513 and the air outlet 21 may be connected to each other through a pipeline.

[0075] Further, see Figure 3 An air outlet grille 514 is provided at the second air guide port 513 so that the air outlet grille 514 filters the air flow flowing out through the second cooling air duct to ensure the cleanliness of the air flow, and at the same time, the air flow passing through the air outlet grille 514 is divided into multiple streams to evenly cool the inner pot 7, thereby further preventing food from adhering to the inner pot 7.

[0076] Better, refer to Figure 3 and Figure 6 The air outlet grille 514 is provided with connecting ribs 515 extending toward the air guide member 5, and the connecting ribs 515 extend into the second air guide port 513 so that the connecting ribs 515 abut against the mouth wall of the second air guide port 513, thereby realizing the connection between the air outlet grille 514 and the air guide member 5 to increase the stability of the air outlet grille 514.

[0077] The present application does not specifically limit the structure of the connecting rib 515. Preferably, refer to Figure 3 and Figure 6 The connecting ribs 515 are sheet-like structures arranged at intervals along the circumference of the air outlet grille 514 to increase the connection points between the air outlet grille 514 and the air guide 5, thereby further increasing the stability of the air outlet grille 514. In other embodiments, the connecting ribs 515 may also be an annular structure arranged along the circumference of the air outlet grille 514 to increase the air tightness between the air outlet grille 514 and the air guide 5, thereby allowing more airflow to contact the inner liner 7 through the air outlet 21, thereby improving the cooling efficiency of the inner liner 7.

[0078] In a preferred embodiment, referring to Figure 1 , Figure 2 , Figure 4 and Figure 5 The air guide member 5 further includes a guide plate 52 , the guide plate 52 has a guide surface facing the cooling fan 4 , and a fixing portion 521 is provided on a side of the guide surface facing away from the cooling fan 4 .

[0079] Specifically, the outer cover 1 includes an outer shell 11 surrounding the outer periphery of the heat preservation cover 2 and a base 12 located at the bottom of the outer shell 11, the base 12 has a limiting column 122 located on the side of the guide surface away from the cooling fan 4, and the fixing portion 521 is passed through the limiting column 122. On the one hand, the air guide member 5 is fixed, and on the other hand, the fixing portion 521 is located on the side of the guide surface away from the cooling fan 4 to make the air flow smoother, thereby further improving the cooling efficiency and cooling effect of the circuit board 3 and the inner tank 7. In addition, the guide plate 52 and the limiting column 122 can also avoid each other to increase the compactness of the structure inside the outer cover 1, thereby facilitating the miniaturization design of the cooking appliance.

[0080] The present application does not specifically limit the structure of the fixing portion 521. Preferably, the fixing portion 521 is a sheet-like structure to reduce the production cost of the cooking utensil. In other embodiments, the fixing portion 521 may also be a block-like structure to increase the structural strength of the fixing portion 521 and further increase the connection stability between the air guide 5 and the outer cover 1.

[0081] Better, refer to Figure 1The cooking utensil further includes an inner pot 7 located inside the heat preservation cover 2 and a heating device 6 located below the inner pot 7. The heating device 6 has a connecting ear 61, and the connecting ear 61 is fixedly connected to the limiting column 122 by a screw to increase the flexibility of the limiting column 122 and avoid the need to provide other components to fix the heating device 6, thereby improving the compactness of the cooking utensil structure while reducing the production cost of the cooking utensil.

[0082] The present application does not make any specific limitation on the structure of the heating device 6, which may include a wire drum, a coil wound around the wire drum, and a magnetic member arranged on the wire drum, that is, the inner pot 7 is heated by electromagnetic heating; it may also include a heating disk, which is in contact with the inner pot 7 to achieve heating of the inner pot 7.

[0083] Further, see Figure 1 The outer cover 1 has a fixing bracket 121, and the circuit board 3 is arranged on the fixing bracket 121 to increase the stability of the circuit board 3, improve the product quality of the cooking utensil, and further improve the user experience.

[0084] In a preferred embodiment, referring to Figure 3 , Figure 4 and Figure 5 A positioning column 516 is extended from the bottom of the shell 51, and a connecting column is provided on the base 12 corresponding to the positioning column 516. The positioning column 516 extends into the connecting column to realize the fixed connection between the air guide member 5 and the outer cover 1, thereby further increasing the stability of the air guide member 5, and at the same time reducing the difficulty of assembling the air guide member 5, thereby improving the production efficiency of the cooking appliance.

[0085] It should be noted that the present application does not specifically limit the installation method of the cooling fan 4 , and it can be connected to the air guide 5 in the above-mentioned embodiment, it can also be connected to the outer cover 1 , and it can also be connected to the heat preservation cover 2 .

[0086] In a preferred embodiment, referring to Figure 1 and Figure 2 The heat preservation cover 2 is eccentrically placed inside the outer cover 1 so that there is a first gap between one side of the heat preservation cover 2 and the outer cover 1, and there is a second gap between the other side of the heat preservation cover 2 and the outer cover 1. The first gap is larger than the second gap, and the cooling fan 4 and the circuit board 3 are arranged in the first gap.

[0087] Specifically, the outer cover 1 has a relative front and rear end and left and right sides located on both sides of the front and rear ends, the thermal insulation cover 2 has a central axis parallel to the left and right directions, the first gap is located on the side of the central axis close to the rear end, and the second gap is located on the side of the central axis close to the front end.

[0088] That is to say, the gap between the heat preservation cover 2 and the outer cover 1 is larger at the end near the rear end of the outer cover 1, and the cooling fan 4 and the circuit board 3 are installed at a position near the rear end of the outer cover 1, so as to achieve the effect of facilitating the assembly personnel to assemble the circuit board 3 and the cooling fan 4, thereby improving the assembly efficiency of the cooking appliance, and at the same time increasing the heat dissipation space of the circuit board 3 to improve the heat dissipation efficiency of the circuit board 3. In addition, the internal space of the outer cover 1 can be reasonably utilized to improve the space utilization rate inside the outer cover 1, which is conducive to the miniaturization design of the cooking appliance.

[0089] Furthermore, the outer cover 1 has a first extension section and a second extension section along its circumference, the curvature of the first extension section is smaller than the curvature of the second extension section, and the cooling fan 4 is located at a position where the first extension section is close to the second extension section, thereby making the position where the cooling fan 4 is located relatively flat, thereby reducing the production difficulty of the cooking appliance and improving the production efficiency of the cooking appliance.

[0090] In a preferred embodiment, referring to Figure 1 , Figure 2 and Figure 7 An air inlet grille 112 is disposed at the air inlet 111 . The air inlet grille 112 has a positioning rib 113 extending toward the inside of the outer cover 1 . The positioning rib 113 cooperates with the air inlet 111 for positioning.

[0091] Specifically, after the air inlet grille 112 is assembled to the air inlet 111, the positioning rib 113 extends into the air inlet 111 so that the positioning rib 113 cooperates with the wall of the air inlet 111 to position the air inlet grille 112, thereby increasing the stability of the air inlet grille 112 and facilitating the assembly of the air inlet grille 112, thereby improving the assembly efficiency of the cooking appliance.

[0092] The present application does not specifically limit the structure of the positioning rib 113. Preferably, refer to Figure 7 The positioning ribs 113 are annular structures arranged along the circumference of the air inlet grille 112 to increase the contact area between the positioning ribs 113 and the wall of the air inlet 111, thereby increasing the positioning effect of the air inlet grille 112, further increasing the stability of the air inlet grille 112, and also increasing the air tightness between the air inlet grille 112 and the outer cover 1, so as to further improve the cooling effect and cooling efficiency of the circuit board 3 and the liner 7. In other embodiments, the positioning ribs 113 may also be sheet structures arranged at intervals along the circumference of the air inlet grille 112.

[0093] Further, see Figure 7A fixing rib 114 is provided on one side of the positioning convex rib 113 away from the center of the air inlet grille 112, and one end of the fixing rib 114 close to the outside of the outer cover 1 abuts against the inner wall of the outer cover 1, so that the fixing rib 114 cooperates with the stopper of the inner wall of the outer cover 1, thereby fixing the air inlet grille 112 to the outer cover 1, thereby reducing the investment in other components and further reducing the production cost of the cooking appliance.

[0094] Further, refer to Figure 7 The fixing rib 114 has a guide section at one end close to the center of the outer cover 1, and the thickness of the guide section gradually decreases in the direction away from the center of the outer cover 1, so as to facilitate the assembly of the air inlet grille 112 to the outer cover 1, reduce the assembly difficulty of the air inlet grille 112, and improve the assembly efficiency of the air inlet grille 112.

[0095] In a preferred embodiment, the positioning ribs 113 enclose a mounting area, and the cooling fan 4 is located in the mounting area.

[0096] Specifically, the cooling fan 4 extends into the installation area and abuts against the inner wall of the positioning rib 113, which, on the one hand, increases the air tightness between the cooling fan 4 and the air inlet grille 112, thereby ensuring the cooling efficiency and cooling effect of the circuit board 3 and the inner tank 7, and on the other hand, further increases the stability of the cooling fan 4.

[0097] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0098] 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.

[0099] 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 appliance, comprising an outer cover, a heat preservation cover arranged in the outer cover, and a circuit board and a cooling fan arranged between the outer cover and the heat preservation cover, characterized in that: The side of the outer cover is provided with an air inlet corresponding to the cooling fan, the heat preservation cover is provided with an air outlet, the circuit board is provided with a heat sink, and an air guide is further provided between the outer cover and the heat preservation cover, the air guide has a first cooling air duct connecting the cooling fan and the heat sink and a second cooling air duct connecting the cooling fan and the air outlet.

2. A cooking utensil according to claim 1, characterized in that: The air guide member has a guide surface facing the outer cover, the guide surface has a raised portion protruding toward the outer cover, at least a portion of the first cooling air duct is located on one side of the raised portion, and at least a portion of the second cooling air duct is located on the other side of the raised portion.

3. The cooking utensil according to claim 1, characterized in that: The air guide member includes a shell, and an air guide cavity is provided inside the air guide member. The first cooling air duct and the second cooling air duct are both located in the air guide cavity. The outer cover is provided with an air guide port connected to the air guide cavity, and the cooling fan is arranged at the air guide port.

4. A cooking utensil according to claim 3, characterized in that: The cooling fan is in abutment and sealed against the edge of the air guide port; Alternatively, there is a gap between the cooling fan and the air guide port.

5. The cooking utensil according to claim 1, characterized in that: The air guide member is further provided with a first air guide port connected to the first cooling air duct and a second air guide port connected to the second cooling air duct, the edge of the first air guide port abuts against the heat sink, and the second air guide port is connected to the air outlet.

6. The cooking utensil according to claim 1, characterized in that: The horizontal projection of the circuit board is located on the cooling fan, so that at least a portion of the circuit board constitutes the air guide, and the circuit board divides the space between the outer cover and the thermal insulation cover into a first cooling area located on one side of the circuit board and a second cooling area located on the other side of the circuit board, the heat sink is located in the first cooling area, and the thermal insulation cover is located in the second cooling area.

7. The cooking utensil according to claim 1, characterized in that: The heat preservation cover is eccentrically placed inside the outer cover so that there is a first gap between one side of the heat preservation cover and the outer cover, and a second gap between the other side of the heat preservation cover and the outer cover, the first gap is larger than the second gap, and the cooling fan and the circuit board are arranged in the first gap.

8. The cooking utensil according to claim 1, characterized in that: The air guide member includes a guide plate, the guide plate has a guide surface facing the cooling fan, and a fixing portion is provided on a side of the guide surface facing away from the cooling fan.

9. The cooking utensil according to claim 1, characterized in that: An air inlet grille is provided at the air inlet, and the air inlet grille has positioning convex ribs extending toward the inside of the outer cover, and the positioning convex ribs cooperate with the air inlet for positioning.

10. The cooking utensil according to claim 9, characterized in that: The positioning ribs enclose a mounting area, and the cooling fan is located in the mounting area.

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