A pot cover with heating function and a cooking appliance

Abstract

The application discloses a pot cover with a heating function and a cooking utensil, and belongs to the technical field of kitchen appliances. The pot cover comprises a cover, a heating unit and an inner cover assembly, the inner cover assembly comprises a fixing ring and an inner cover installed on the fixing ring, the heating unit is used for heating the inner cover, the inner cover comprises a first metal layer and a second metal layer, a heat transfer vein is arranged between the first metal layer and the second metal layer and is formed by blowing inflation medium injected between the first metal layer and the second metal layer along a preset path, one of the fixing ring and the cover is provided with a movable buckle, the other one is provided with a buckle position, and the inner cover is provided with a blowing inlet which is arranged in a circumferential direction and is matched with the movable buckle or the buckle position arranged on the fixing ring. The cooking utensil comprises a pot body with a cooking cavity and the pot cover. The inner cover has high heating and heat dissipation rates, so that the condensed water on the inner cover can be easily removed, the inner cover can be quickly cooled and cleaned, and the user can conveniently realize the disassembly and assembly of the inner cover by disassembling and assembling the fixing ring.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of kitchen appliances, and particularly relates to a pot cover with a heating function and a cooking appliance. BACKGROUND

[0002] At present, the pot cover of an electric rice cooker, a pressure cooker and the like in a kitchen generally comprises an upper cover, a lining cover and an inner cover. In the process of sealing cooking, the temperature of the inner cover is relatively low compared with the temperature in the cooker body, and the water vapor generated in the cooker body will condense into condensed water on the lower surface of the inner cover when rising to the inner cover. During the cooking process, part of the condensed water flows back to the cooker body, thereby reducing the cooking taste of food in the cooker body and affecting the user experience. After cooking, in the process of opening the cover, for a connected rice cooker, the condensed water condensed on the inner cover will slide to the water collecting ring of the cooker body and be collected to the waste water collecting box arranged on the cooker body through the liquid collecting hole of the water collecting ring, and the user needs to regularly disassemble the waste water collecting box to pour out the waste water and clean the waste water collecting box, thereby increasing the cleaning burden of the user and increasing the design cost and manufacturing cost of the cooker body. For a split type rice cooker, during the process of opening the cover and moving away the pot cover after cooking, the condensed water condensed on the inner cover will fall to the kitchen table or the ground, thereby increasing the cleaning burden of the user and reducing the user experience.

[0003] The prior art solves the technical problem of condensed water accumulation on the inner cover by additionally arranging a heating device on the lining cover to heat the inner cover. However, in the prior art, the inner cover is directly mounted on the lining cover, and after the inner cover is heated, the condensed water can be reduced to a certain extent, but at the same time, the inner cover will heat the lining cover, thereby accelerating the aging process of the lining cover and reducing the service life of the lining cover. In the case of manufacturing the lining cover by using a material with higher temperature resistance, the manufacturing cost of the lining cover will be greatly increased.

[0004] Furthermore, due to the functional design of integrating other components such as an exhaust valve and a pressure limiting valve on the pot cover, the existing heating device only contacts and transfers heat to a small part of the upper surface of the inner cover, so that the inner cover can only be heated in a local area, the heat conduction efficiency is low, the uneven heating causes the temperature of the lower surface of the inner cover to be inconsistent, thereby causing the removal effect of the condensed water to be not ideal, and the problem of condensed water accumulation still exists. The technical solutions of increasing the contact area of the heating device with the inner cover and increasing the heating power of the heating device will increase the manufacturing cost and energy consumption in the use process.

[0005] In addition, the existing inner cover is directly mounted on the cover through a buckle structure. When cooking, the temperature of the buckle structure connected to the inner cover also rises with the rising temperature of the inner cover, which accelerates the aging speed of the buckle structure. Moreover, the buckle structure is often at a high temperature when cooking is finished, which is relatively hot and inconvenient for users to disassemble and clean the inner cover in a short time after cooking, reducing the user experience. Even if the buckle structure is forced by wearing anti-scald gloves or other protective gear, the user holds the inner cover during cleaning after disassembling the inner cover, and the high temperature of the inner cover brings great challenges to cleaning. Moreover, the existing heat transfer structure of the inner cover has poor heat dissipation performance. After cooking, it takes a long time for the inner cover to cool down to a temperature suitable for users to hold, further reducing the user experience. SUMMARY

[0006] The present application provides a pot cover with heating function and cooking utensil to solve at least one of the above technical problems.

[0007] The technical scheme adopted by the present application is:

[0008] A pot cover with heating function, comprising a cover, a heating unit and an inner cover assembly, the inner cover assembly comprising a fixed ring and an inner cover mounted on the fixed ring, the heating unit being located above the inner cover to heat the inner cover, the inner cover comprising a first metal layer and a second metal layer stacked one above the other, a heat transfer channel being provided between the first metal layer and the second metal layer, one of the fixed ring and the cover being provided with a movable buckle, the other being provided with a buckle position matched with the movable buckle, the fixed ring being detachably connected with the cover through the clamping and matching of the movable buckle and the buckle position; the heat transfer channel is formed by blowing inflation medium injected between the first metal layer and the second metal layer along a predetermined path, the inner cover is provided with a blowing inlet for the blowing inflation medium; the blowing inlet and the movable buckle or the buckle position provided on the fixed ring are arranged in circumferential direction.

[0009] The pot cover with heating function in the present application also has the following additional technical features:

[0010] The pot cover has a hinge side for hinging with a pot body of a cooking utensil, and a buckle side away from the hinge side and for buckling with the pot body, the setting position of the blowing inlet on the inner cover is away from the hinge side and close to the buckle side, so that in the state that the pot cover opens the pot body, the blowing inlet is located at the upper part of the pot cover.

[0011] The fixed ring is provided with a recessed platform for bearing the inner cover, the recessed platform is sunken towards the direction away from the cover, so that the position height of the outer ring top surface of the fixed ring is higher than the upper surface of the inner cover, to form a heat insulation gap between the inner cover and the cover.

[0012] The inner cover assembly further comprises a crimping piece, one side of the inner cover provided with the blow inflation inlet is clamped and fixed between the crimping piece and the fixed ring, and the projection of the crimping piece towards the inner cover covers the blow inflation inlet.

[0013] The inner cover is provided with an exhaust port.

[0014] The heat transfer pipe is arranged side by side with the exhaust port or arranged around at least part of the exhaust port; and / or, the exhaust port and the blow inflation inlet are located on two opposite sides of the heat transfer pipe.

[0015] The protrusion height of the heat transfer pipe in the first metal layer is greater than the protrusion height of the heat transfer pipe in the second metal layer.

[0016] At least part of the heat transfer pipe is in contact with the heating unit; and / or, the inner cover is provided with an abutting part abutting with the heating unit, and the heat transfer pipe extends to the abutting part.

[0017] The movable buckle is movably arranged on the cover to have a locked position abutting with the buckle position and an unlocked position disengaging from the buckle position, the movable buckle comprises a positioning part fixedly connected with the cover, and a clamping tongue and an operating part fixedly connected with the positioning part respectively, the operating part has a movement space with the cover, and the operating part is moved under the action of an external force to drive the movable buckle to move from the locked position to the unlocked position.

[0018] The pot cover further comprises an elastic reset piece abutting with the positioning part and applying an elastic force to the positioning part to drive the movable buckle to move from the unlocked position to the locked position.

[0019] The application further discloses a cooking utensil comprising a pot body with a cooking cavity and a pot cover for opening or covering the cooking cavity, the pot cover is the pot cover with a heating function as described above; the cooking utensil further comprises a rotating shaft, the pot cover is rotatably connected to the pot body through the rotating shaft, and the movable buckle and the buckle position are located on a side away from the rotating shaft.

[0020] Thanks to the above technical solutions, the application has the following beneficial effects:

[0021] 1. Compared with the prior art in which the inner cover is directly mounted on the liner cover, the inner cover in the application is mounted on the fixing ring, and the fixing ring is detachably connected with the liner cover through clamping fixation. The clamping assembly method does not require the use of a tool during the disassembly and assembly of the inner cover assembly, which facilitates the disassembly and assembly of the inner cover assembly by the user and improves the user experience. Moreover, the inner cover in the application is provided with a heat transfer vein between the first metal layer and the second metal layer, which can not only realize the rapid transfer of heat after the inner cover is heated, ensure the rapid and uniform heating of the inner cover, and guarantee the removal effect of the condensed water, but also realize the rapid heat dissipation of the inner cover after cooking is completed.

[0022] Moreover, the heat transfer vein in the application is formed by blowing the blowing medium injected between the first metal layer and the second metal layer along a preset path. Compared with the scheme in which an independent heat transfer pipeline component is placed between the first metal layer and the second metal layer, the embodiment has a higher degree of integration, a higher heat conduction efficiency, and a wider range of laying, thereby improving the coverage area of the heat transfer vein on the inner cover, improving the universality, and further improving the uniformity and consistency of the heating of the inner cover. Furthermore, the blowing inlet for the blowing medium for forming the heat transfer vein is arranged in the circumferential direction in registration with the movable buckle or the buckle position provided on the fixing ring, thereby providing a prompt function for the assembly of the inner cover and the fixing ring and helping to improve the assembly efficiency of the two.

[0023] In addition, compared with the prior art in which the inner cover is directly mounted on the liner cover, the design of the fixing ring in the application not only provides a mounting position for the inner cover, but also increases the overall thickness of the detachable inner cover assembly. During cleaning, the user can easily grasp the inner cover assembly and prevent it from slipping, thereby improving the cleaning efficiency.

[0024] 2. As a preferred embodiment of the application, the pot cover has a hinge side for being hinged to a body of a cooking utensil. The blowing inlet is arranged on the inner cover away from the hinge side, so that the blowing inlet is located at the upper part of the pot cover in the state in which the pot cover is opened to the body. The upward arrangement of the blowing inlet makes the condensed water not flow into the blowing inlet during downward flow in the state in which the pot cover is opened, reduces the sealing requirement of the blowing inlet during processing and manufacturing, reduces the cost, and avoids the condensed water from entering between the first metal layer and the second metal layer through the blowing inlet, thereby ensuring the heat transfer efficiency of the heat transfer vein and prolonging the service life of the inner cover.

[0025] 3. As a preferred embodiment of the application, the heat transfer vein is filled with a heat-conducting medium. The full-area flow of the heat-conducting medium in the heat transfer vein after heating can improve the uniformity of heating, avoid the problem of uneven heating caused by local heating, and guarantee the removal effect of the condensed water.

[0026] 4. As a preferred embodiment of the present application, the side of the inner cover provided with the inflation inlet is clamped and fixed between the crimping piece and the fixing ring, and the projection of the crimping piece towards the inner cover covers the inflation inlet. By setting the crimping piece to shield the inflation inlet, dirt can be prevented from accumulating at the inflation inlet during the cleaning of the inner cover assembly, and after shielding, the uniformity of the appearance of the upper surface of the inner cover can be ensured, thereby improving the appearance performance. In addition, the presence of the crimping piece can also serve as a reminder of the relative position of the inner cover and the fixing ring in the circumferential direction during the assembly of the inner cover assembly, thereby helping to improve the assembly efficiency.

[0027] 5. As a preferred embodiment of the present application, due to the formation method of the heat transfer channel, the heat transfer channel in the present embodiment is arranged side by side with the exhaust port or arranged around at least part of the exhaust port, so that the exhaust port can be avoided from the inflation area of the first metal layer and the second metal layer, thereby reducing the sealing difficulty of setting a sealing member at the position of the exhaust port, avoiding the problem of gas leakage at the exhaust port, and avoiding the hot steam in the cooking cavity from entering the inner cover of the pot cover through the exhaust port, thereby helping to protect the parts inside the pot cover.

[0028] 6. As a preferred embodiment of the present application, the exhaust port and the inflation inlet are located on two opposite sides of the heat transfer channel, which can maximize the use of the inflatable space on the inner cover, improve the coverage of the heat transfer channel, and thereby improve the heat transfer efficiency and heat dissipation efficiency of the inner cover. In addition, the relative arrangement of the inflation inlet and the exhaust port can also facilitate the planning of the preset path between the first metal layer and the second metal layer, improve the inflation efficiency, and facilitate the formation of the heat transfer channel.

[0029] 7. As a preferred embodiment of the present application, the protrusion height of the heat transfer channel in the first metal layer is greater than its protrusion height in the second metal layer, so that the redundant space between the first metal layer and the liner cover can be utilized for placing the inner cover, thereby reducing the vertical distance between the heat transfer channel and the heating unit and improving the heating efficiency. Further, the heat transfer channel is only highlighted in the first metal layer, so that the second metal layer has a flat or nearly flat lower surface, facilitating the user to clean the lower surface of the inner cover.

[0030] 8. As a preferred embodiment of the present application, the movable buckle is provided on the liner cover, and the buckle position is provided on the fixing ring, so that the redundant space between the liner cover and the upper cover can be fully utilized to realize the movable arrangement of the movable buckle, thereby helping to miniaturize the pot cover, and also facilitating the simplification of the structure design of the inner cover assembly, and facilitating the cleaning and disassembly of the inner cover assembly.

[0031] 9. The cooking appliance also discloses a cooking appliance, a pot cover is connected to a pot body through a rotating shaft, a movable buckle and a buckle position are located on a side far from the rotating shaft, so as to leave enough operation space for a user, and the inner cover assembly can be conveniently disassembled and assembled. In addition, the integrated design of the pot cover and the pot body in the application also provides a mounting position for the pot cover, so that the pot cover can be integrated into the pot body after cooking, and the requirement for storage space and storage position is saved. BRIEF DESCRIPTION OF DRAWINGS

[0032] The drawings described herein are used to provide further understanding of the application, and form a part of the application. The illustrative embodiments of the application and their descriptions serve to explain the application, and do not constitute an improper limitation on the application. In the drawings:

[0033] Figure 1 It is a sectional view of the pot cover according to an embodiment of the application;

[0034] Figure 2 It is an enlarged view of A of Figure 1

[0035] Figure 3 It is an enlarged view of B of Figure 1

[0036] Figure 4 It is an exploded view of the inner cover assembly according to an embodiment of the application;

[0037] Figure 5 It is a sectional view of the inner cover according to an embodiment of the application;

[0038] Figure 6 It is an enlarged view of C of Figure 5

[0039] Figure 7 It is a perspective view of the inner cover according to an embodiment of the application.

[0040] Among them,

[0041] 1. The cover, 11. The movable buckle, 111. The positioning part, 112. The clamping tongue, 113. The operation part;

[0042] 2. The inner cover, 21. The first metal layer, 211. The contact area, 212. The non-contact area, 22. The second metal layer, 221. The flow guide surface, 23. The heat transfer pipe, 24. The first mounting hole, 25. The inflation inlet, 26. The exhaust port;

[0043] 3. The sealing ring, 31. The sealing body, 32. The sealing lip;

[0044] 4. The fixed ring, 41. The recess, 42. The buckle position, 43. The second mounting hole;

[0045] ​​​5. Thermal gap;

[0046] 6. Heating unit;

[0047] 7. Crimping piece;

[0048] 8. Upper cover;

[0049] 9. Elastic reset piece. DETAILED DESCRIPTION

[0050] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0051] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details and other implementations can be employed. In other instances, well-known methods, procedures, components, and circuits have not been described in detail as not to unnecessarily obscure aspects of the present application. It will be understood that the embodiments of the present application and the features of the embodiments can be combined with each other, if not in conflict.

[0052] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0053] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected, or can be communicated; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0055] As shown in Figures 1 to 7 A pot cover with heating function, comprising a cover 1, a heating unit and an inner cover assembly, the inner cover assembly comprises a fixed ring 4 and an inner cover 2 installed on the fixed ring 4, the heating unit is located above the inner cover 2 to heat the inner cover 2, the inner cover 2 comprises a first metal layer 21 and a second metal layer 22 stacked one above the other, a heat transfer channel 23 is arranged between the first metal layer 21 and the second metal layer 22, one of the fixed ring 4 and the cover 1 is provided with a movable buckle, the other is provided with a buckle position matched with the movable buckle, the fixed ring 4 is detachably connected with the cover 1 through the clamping cooperation of the movable buckle and the buckle position; the heat transfer channel 23 is formed by blowing a blowing medium injected between the first metal layer 21 and the second metal layer 22 along a predetermined path, the inner cover 2 is provided with a blowing inlet 25 for the blowing medium to enter; the blowing inlet 25 is arranged in the circumferential direction with the movable buckle or the buckle position arranged on the fixed ring 4.

[0056] Compared with the prior art technical solution in which the inner cover is directly installed on the cover, the inner cover 2 in the present application is installed on the fixed ring 4, and the fixed ring 4 is detachably connected with the cover 1 through clamping fixation. The clamping assembly does not need to rely on tooling during the disassembly and assembly of the inner cover assembly, which facilitates the disassembly and assembly of the inner cover assembly by the user and improves the user experience. Moreover, the heat transfer channel 23 is arranged between the first metal layer 21 and the second metal layer 22 in the inner cover 2 in the present application, which can not only realize the rapid heat transfer of the inner cover 2 after being heated, ensure the rapid and uniform heating of the inner cover 2, and protect the removal effect of condensed water, but also realize the rapid heat dissipation of the inner cover 2 after cooking, and shorten the waiting time of the user.

[0057] And the contact area of the inner cover 2 and the fixed ring 4 is relatively small, and in the cooking process and the process of heating the inner cover 2, the temperature of the fixed ring 4 itself is lower than that of the inner cover 2, so that the fixed ring 4 connected with the inner cover 2 can be cooled down quickly, which not only delays the aging speed of the cover 1 and the movable buckle and / or the buckle position, but also facilitates the user to disassemble and clean the inner cover assembly in a short time after cooking, and improves the user experience.

[0058] In addition, compared with the prior art in which the inner cover is directly mounted on the cover, the design of the fixed ring 4 in the present application not only provides a mounting position for the inner cover 2, but also increases the overall thickness of the detachable inner cover assembly, which is convenient for the user to grasp during cleaning, and is not easy to slip off, thereby improving the cleaning efficiency.

[0059] Compared with the scheme of placing an independent heat transfer pipe component between the first metal layer 21 and the second metal layer 22, the heat transfer pipe 23 in the present application is formed by bulging the first metal layer 21 and the second metal layer 22, which has a higher degree of integration, a higher heat conduction efficiency, and a wider range of paving, thereby further improving the uniformity and consistency of the heating of the inner cover 2.

[0060] Specifically, the first metal layer 21 and the second metal layer 22 in the second embodiment are hot-pressed and compounded into an inseparable composite structure, and the heat transfer pipe 23 is formed by blowing the first metal layer 21 and the second metal layer 22, that is, based on the hot-pressing and compounding of the first metal layer 21 and the second metal layer 22, blowing medium is injected through the blowing inlet 25 arranged between the two, and the pressure generated by the blowing medium causes the area not hot-pressed and compounded in the preset path to expand and bulge into a hollow pipe structure, thereby forming the heat transfer pipe 23.

[0061] The blowing medium can be high-pressure gas or high-pressure liquid, for example, high-pressure nitrogen gas is used for blowing, and the high-pressure nitrogen gas is injected between the first metal layer 21 and the second metal layer 22 through the blowing inlet, and the high-pressure nitrogen gas moves along the preset path to form the heat transfer pipe 23 between the first metal layer 21 and the second metal layer 22.

[0062] The blowing inlet 25 and the movable buckle or the buckle position arranged on the fixed ring 4 are arranged in the circumferential direction to provide a prompt function for the assembly of the inner cover 2 and the fixed ring 4, which helps to improve the assembly efficiency of the two. The said arrangement in the present embodiment means that the blowing inlet 25 and the movable buckle or the buckle position arranged on the fixed ring 4 are in the same radial position in the circumferential direction, and are close to each other.

[0063] The present application does not limit the position of the movable buckle and the buckle position, and as a preferred embodiment of the present application, as shown inFigure 1 and Figure 3 As shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4, the preferred embodiment of the lid cover 1 is provided with a movable buckle 11, and the fixed ring 4 is provided with a buckle position 42. Specifically, the movable buckle 11 is movably arranged on the lid cover 1 to have a locked position for clamping with the buckle position 42 and an unlocked position for disengaging from the buckle position 42. The movable buckle 11 includes a positioning portion 111 fixedly connected with the lid cover 1, a clamping tongue 112 fixedly connected with the positioning portion 111, and an operating portion 113 fixedly connected with the positioning portion 111 and having a movement space with the lid cover 1. The operating portion 113 is moved under the action of an external force to drive the movable buckle 11 to move from the locked position to the unlocked position.

[0064] In this embodiment, the movable buckle 11 is arranged on the lid cover 1, and the buckle position 42 is arranged on the fixed ring. Thus, the redundant space between the lid cover 1 and the upper cover 8 of the pot cover can be fully utilized to achieve the movable arrangement of the movable buckle 11, which is helpful for the miniaturization of the pot cover and the simplification of the structure design of the inner cover assembly, and facilitates the cleaning and disassembly of the inner cover assembly.

[0065] Further, the pot cover further comprises a resilient reset member 9 abutting against the positioning portion 111 and applying a resilient force to the positioning portion 111 to drive the movable buckle 11 to move from the unlocked position to the locked position. The resilient reset member 9 is arranged to assist the reset of the movable buckle 11, which is convenient and labor-saving, and has high automaticity, thus helping to improve the user experience.

[0066] As a preferred embodiment of the present application, the pot cover has a hinge side for being hingedly connected with a body of a cooking utensil, and a clamping side away from the hinge side and for being clamped with the body. The inflation inlet 25 is arranged on the inner cover 2 away from the hinge side and close to the clamping side, so that the inflation inlet 25 is located at an upper portion of the pot cover in a state where the pot cover is opened to expose the body. The inflation inlet 25 is arranged in an upper position, so that in the state where the pot cover is opened, the condensate water does not flow into the inflation inlet during the downward flow, which reduces the sealing requirement for the inflation inlet 25 in the process of manufacturing, not only reduces the cost, but also avoids the condensate water from entering between the first metal layer 21 and the second metal layer 22 from the inflation inlet 25, thereby ensuring the heat transfer efficiency of the heat transfer duct 23 and prolonging the service life of the inner cover 2.

[0067] As a preferred embodiment of the present application, the fixed ring 4 is provided with a recessed platform 41 for bearing the inner cover 2. The recessed platform 41 is sunken towards a direction away from the lid cover 1, so that the position height of the outer ring top surface of the fixed ring 4 is higher than the upper surface of the inner cover 2, to form a heat insulation gap 5 between the inner cover 2 and the lid cover 1. As shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4, the recessed platform 41 is arranged on the fixed ring 4, and the inner cover 2 is arranged on the recessed platform 41. Thus, the heat insulation gap 5 is formed between the inner cover 2 and the lid cover 1, which is helpful for the heat insulation of the inner cover 2. Figure 2As shown, it is shown that the position where the top surface of the fixed ring 4 is located is different from the upper surface of the inner cover 2 by a height difference H. The existence of the heat insulation gap 5 avoids the direct contact between the inner cover 2 and the lining cover 1, thereby avoiding the contact heat transfer between the inner cover 2 and the lining cover 1, reducing the temperature rise of the lining cover 1, thereby delaying the aging speed of the lining cover 1, prolonging the service life of the pot cover, and also reducing the requirement for the temperature resistance of the lining cover 1, thereby reducing the manufacturing cost of the lining cover 1.

[0068] In addition, the design of the concave platform 41 can also play a role in radially limiting the inner cover 2 during the assembly of the inner cover 2 and the fixed ring 4, which helps to improve the assembly efficiency of the inner cover 2 and the fixed ring 4.

[0069] Furthermore, the existence of the heat insulation gap 5 can also form an air heat exchange convection layer between the inner cover 2 and the lining cover 1, which has a certain heat preservation and energy storage effect. After the heating unit 6 stops running, the inner cover 2 can be further heated by using the heat storage of the heat insulation gap 5, which can further improve the condensate removal effect while reducing energy consumption.

[0070] The application does not limit the connection mode of the fixed ring 4 and the inner cover 2. As a preferred embodiment, the fixed ring 4 and the inner cover 2 are detachably connected, and the specific form of detachable connection is not limited, including but not limited to connection by fasteners such as screws, clamping cooperation, plug-in limiting cooperation, magnetic attraction cooperation, etc. Figure 4 As shown, it gives a specific example that the inner cover 2 has an outward turning edge carried on the concave platform 41. In this example, the outward turning edge is provided with a plurality of first mounting holes 24 along the circumference thereof, and the concave platform 41 is provided with a second mounting hole 43 corresponding to each first mounting hole 24. The inner cover 2 is connected with the fixed ring 4 by a screw passing through the first mounting hole 24 and the second mounting hole 43.

[0071] As a preferred embodiment of the application, the heat transfer pipe 23 is filled with a heat conducting medium. The full domain flow of the heat conducting medium in the heat transfer pipe 23 after heating can improve the uniformity of heating, avoid the problem of uneven heating caused by local heating, and ensure the removal effect of the condensed water.

[0072] It should be noted that the application does not limit the form of the heat conducting medium, which can adopt the following embodiments:

[0073] Embodiment 1: The heat conducting medium is a gas mixed with a heat conducting medium. For example, the heat conducting medium is air mixed with hydrogen or helium.

[0074] In the embodiment 2, the heat-conducting medium is a liquid mixed with a heat-conducting medium and can be evaporated into a gas after being heated. Further, the heat-conducting medium in the embodiment 2 can be evaporated into a gas after being heated and expanded, and due to the restriction of the heat transfer duct 23, the expanded gas can flow rapidly along the heat transfer duct 23 to the entire range of the heat transfer duct 23, realizing rapid and uniform heating of the inner cover 2 and greatly improving the heating efficiency. After the heating unit 6 stops running, the gas filled in the heat transfer duct 23 will re-condense into a liquid for recycling as the temperature decreases.

[0075] As preferred, as shown in Figure 1 、 Figure 5 and Figure 6 , the heating unit 6 is in contact with part of the first metal layer 21, and the side of the second metal layer 22 facing the first metal layer 21 is provided with a flow guide surface 221, and the part of the heating unit 6 in contact with the first metal layer 21 corresponds to the low position of the second metal layer 22. The present example not only facilitates the automatic backflow of the heat-conducting medium to the position corresponding to the heating unit 6 at room temperature to facilitate the rapid heating of the heat-conducting medium by the heating unit 6 for temperature rise and vaporization in the next cooking process, but also realizes the small-area contact of the heating unit 6 with the first metal layer 21, avoiding the temperature rise of the air convection layer between the inner cover 2 and the liner cover 1 caused by large-area contact, thereby reducing the temperature of the liner cover 1, and the small-area contact can reduce power consumption.

[0076] As a preferred embodiment of the above-mentioned embodiment two, the inner cover assembly further comprises a press-fit member 7, one side of the inner cover 2 provided with the blow-in opening 25 is clamped and fixed between the press-fit member 7 and the fixed ring 4, and the projection of the press-fit member 7 towards the inner cover 2 covers the blow-in opening 25. By setting the press-fit member 7 to shield the blow-in opening 25, it can avoid dirt accumulation at the blow-in opening 25 during the cleaning process of the inner cover assembly, and after shielding, it can ensure the neatness of the appearance of the upper surface of the inner cover 2 and improve the appearance performance. In addition, the presence of the press-fit member 7 can also play a role in prompting the relative position of the inner cover 2 and the fixed ring 4 in the assembly process of the inner cover assembly, which helps to improve the assembly efficiency.

[0077] The inner cover 2 is provided with an exhaust port 26. The exhaust port is used to realize exhaust during cooking.

[0078] As a preferred embodiment of the above-described second implementation method, the heat transfer duct 23 is arranged side by side with or around the exhaust port 26 at least partially, so that the exhaust port 26 can avoid the inflation area of ​​the first metal layer 21 and the second metal layer 22, reducing the sealing difficulty of setting a seal at the exhaust port 26, thereby avoiding the problem of air leakage at the exhaust port 26, and preventing hot steam in the cooking cavity from entering the inside of the pot lid through the exhaust port 26, thus helping to protect the internal components of the pot lid.

[0079] As another preferred embodiment of the above-described second implementation method, the exhaust port 26 and the inflation inlet 25 are located on opposite sides of the heat transfer pulsator 23. This embodiment can maximize the use of the inflatable space on the inner cover 2, increase the coverage of the heat transfer pulsator 23, thereby improving the heat transfer efficiency and heat dissipation efficiency of the inner cover 2. In addition, the relative arrangement of the inflation inlet 25 and the exhaust port 26 can also facilitate the planning of the preset path between the first metal layer 21 and the second metal layer 22, improve inflation efficiency, and facilitate the forming of the heat transfer pulsator 23.

[0080] In a preferred embodiment of the second implementation described above, the protrusion height of the heat transfer pulsator 23 on the first metal layer 21 is greater than its protrusion height on the second metal layer 22. The protrusion height refers to the height of the expanded area relative to the unexpanded area during the inflation process. In this embodiment, the location of the expansion is not limited, or in other words, the location of the protrusion of the heat transfer pulsator 23 is not limited. Figures 4 to 6 As shown, this embodiment provides a specific example where the heat transfer pulsator 23 protrudes only from the first metal layer 21. However, this embodiment is not limited to this. The heat transfer pulsator 23 can also protrude from both the first metal layer 21 and the second metal layer 22, except that the protrusion height of the heat transfer pulsator 23 on the first metal layer 21 is greater than its protrusion height on the second metal layer 22. Preferably, the heat transfer pulsator 23 protrudes only from the first metal layer 21, thereby making the second metal layer 22 a flat or nearly flat and smooth surface, which facilitates cleaning of the second metal layer 22 by the user.

[0081] As a preferred embodiment of this application, such as Figure 1 As shown, the upper surface of the inner cover 2 has a contact area 211 that contacts the heating unit 6, and a non-contact area 212 connected to the contact area 211. The vertical distance between the contact area 211 and the cover 1 is greater than the vertical distance between the non-contact area 212 and the cover 1. The relatively large vertical distance between the contact area 211 and the cover 1 reduces the heat radiation from the area with the fastest temperature rise rate to the cover 1, further reducing the temperature rise of the cover 1.

[0082] As preferred, at least part of the heat transfer duct 23 is in contact with the heating unit 6 at the contact area 211. And / or, the inner cover 2 is provided with a docking portion which is in contact with the heating unit 6, and the heat transfer duct 23 extends to the docking portion to achieve the heating of the heat transfer duct 23. The embodiment does not limit the structure of the docking portion, and as preferred, the docking portion is recessed towards the direction away from the heating unit 6 to form a limiting cavity which is adapted to the heating unit 6. On one hand, the limiting cavity can remind and prompt the installation position during the installation of the inner cover assembly, and on the other hand, the limiting cavity can improve the limiting effect of the heating unit 6 to prevent the displacement of the heating unit 6 during use.

[0083] As a preferred embodiment of the present application, as shown in Figures 1 to 4 The inner cover assembly further comprises a sealing ring 3, the sealing ring 3 comprises a sealing body 31 and a sealing lip 32 which is fixedly connected to the sealing body 31, and the sealing body 31 is clamped and fixed between the inner cover 2 and the fixing ring 4. Compared with the prior art of sleeving the sealing ring 3 on the inner cover 2, the embodiment clamps and fixes the sealing body 31 between the inner cover 2 and the fixing ring 4 to achieve the fixation of the sealing ring 3, that is, the installation and positioning of the sealing ring 3 can be achieved when the inner cover 2 and the fixing ring 4 are assembled, which is convenient and fast and helps to improve the assembly efficiency.

[0084] The present application also discloses a cooking utensil, which comprises a pot body having a cooking cavity and a pot cover for opening or covering the cooking cavity, the pot cover being the pot cover with a heating function as described above; the cooking utensil further comprises a rotating shaft, and the pot cover is rotatably connected to the pot body through the rotating shaft, and the movable buckle and the buckle position are located on the side away from the rotating shaft. The pot cover is rotatably connected to the pot body through the rotating shaft, and the movable buckle and the buckle position are located on the side away from the rotating shaft, so that sufficient operation space is left for the user, and the inner cover assembly is convenient to disassemble and assemble. In addition, the integrated design of the pot cover and the pot body in the present application also provides an installation position for the pot cover, so that the pot cover can be integrated on the pot body after cooking, and the requirement for storage space and storage position is saved.

[0085] In addition, the design of the pot cover in the present application can reduce the heat transfer from the inner cover 2 to the lining cover 1, thereby reducing the requirement for the temperature resistance of the lining cover 1 and prolonging the service life of the lining cover 1. In addition, the inner cover 2 in the present application can be heated by the heating unit 6, thereby reducing or even eliminating the accumulation of condensed water on the lower surface of the inner cover 2, ensuring the cooking taste of food in the cooking cavity, and eliminating the waste water collection box on the pot body, thereby facilitating the design of the pot body.

[0086] The places not mentioned in the present application can be realized by using or referring to the existing technology.

[0087] The various embodiments in the specification are described in progressive manner, and the same or similar parts between the various embodiments can be mutually referred to, and each embodiment focuses on the difference from other embodiments.

[0088] The above merely provides an example of the present application, and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A pot cover having a heating function, comprising a cover liner, a heating unit, and an inner cover assembly, characterized in that, The inner cover assembly comprises a fixed ring and an inner cover mounted on the fixed ring, the heating unit is located above the inner cover to heat the inner cover, the inner cover comprises a first metal layer and a second metal layer stacked one above the other, a heat transfer channel is arranged between the first metal layer and the second metal layer, one of the fixed ring and the cover is provided with a movable buckle, the other is provided with a buckle position matched with the movable buckle, the fixed ring is detachably connected with the cover through the clamping cooperation of the movable buckle and the buckle position, the heat transfer channel is formed by blowing and expanding the blowing medium injected between the first metal layer and the second metal layer along a preset path, the inner cover is provided with a blowing inlet for the blowing medium to enter, and the blowing inlet is arranged in the circumferential direction and is matched with the movable buckle or the buckle position arranged on the fixed ring; the inner cover assembly further comprises a pressure connecting piece, one side of the inner cover provided with the blowing inlet is clamped and fixed between the pressure connecting piece and the fixed ring, and the projection of the pressure connecting piece towards the inner cover covers the blowing inlet.

2. The pot cover with heating function according to claim 1, characterized in that, the pot cover has a hinge side for being hinged with a pot body of a cooking utensil, and a buckle side away from the hinge side and for being buckled with the pot body, and the blowing inlet is arranged on the inner cover away from the hinge side and close to the buckle side, so that the blowing inlet is located at the upper part of the pot cover in the state that the pot cover is opened to the pot body.

3. The pot cover with heating function according to claim 1, characterized in that, the fixed ring is provided with a recessed platform for bearing the inner cover, the recessed platform is sunken towards the direction away from the cover, so that the position height of the outer ring top surface of the fixed ring is higher than the upper surface of the inner cover, to form a heat insulation gap between the inner cover and the cover.

4. The pot cover with heating function according to claim 1, characterized in that, the inner cover is provided with an exhaust port; the heat transfer channel is arranged side by side with the exhaust port or around at least part of the exhaust port; and / or, the exhaust port and the blowing inlet are located on two opposite sides of the heat transfer channel.

5. The pot cover with heating function according to claim 1, characterized in that, the protrusion height of the heat transfer channel in the first metal layer is greater than the protrusion height of the heat transfer channel in the second metal layer.

6. The pot cover with heating function according to claim 1, characterized in that, at least part of the heat transfer channel is in contact with the heating unit; and / or, the inner cover is provided with an abutting part abutting with the heating unit, and the heat transfer channel extends to the abutting part.

7. The pot cover with heating function according to claim 1, characterized in that, The movable buckle is movably arranged on the cover to have a locked position in which the buckle is engaged with the buckle position and an unlocked position in which the buckle is disengaged from the buckle position, the movable buckle comprises a positioning part fixed to the cover, a clamping tongue and an operating part fixed to the positioning part respectively, the operating part has a movement space with the cover, and the operating part is moved under the action of external force to drive the movable buckle to move from the locked position to the unlocked position.

8. The pot cover with heating function according to claim 7, characterized in that, The pot cover further comprises an elastic reset member, the elastic reset member abuts against the positioning part and applies an elastic force to the positioning part to drive the movable buckle to move from the unlocked position to the locked position.

9. A cooking appliance comprising a pot body having a cooking cavity, and a lid for opening or closing the cooking cavity, characterized in that, The pot cover is the pot cover with heating function according to any one of claims 1 to 8, and the cooking appliance further comprises a rotating shaft, the pot cover is rotatably connected to the pot body through the rotating shaft, and the movable buckle and the buckle position are located on a side away from the rotating shaft.

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