Pot cover and cooking utensil

Abstract

The utility model discloses a pot lid and cooking utensil relates to household electrical appliance technical field, pot lid includes lid body, sealing element and heating structure, lid body forms wire outlet hole, sealing element is provided in wire outlet hole, sealing element forms sealing hole, heating structure is provided in lid body, part of heating structure passes through the sealing hole and is used for electric connection with external power supply. The utility model aims to improve the sealing performance of the pot cover and reduce water vapor invasion so as to improve the overall reliability of the cooking utensil.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and particularly relates to a pot lid and a cooking appliance. Background Art

[0002] During the cooking process of a cooking appliance, such as a rice cooker, the steam generated in the pot body encounters the area with a lower temperature on the upper cover, and inevitably condenses. On the one hand, the generated condensed water will affect the electronic components in the rice cooker. On the other hand, part of the condensed water will also remain attached to the cover body, and it is easy to fall into the pot when opening the rice cooker, affecting the dining taste.

[0003] The rice cooker in the related art provides an upper cover heating technology. By setting a heating element on the upper cover, the temperature of the upper cover is kept consistent with the temperature in the pot body, thereby reducing condensed water. However, when the heating element is connected to an external power supply, it inevitably passes through the upper cover, thus generating openings at the upper cover. These openings will enable external water vapor or the water vapor generated when the cooking appliance is heated to invade the inside of the upper cover, causing corrosion and failure of the heating element. Summary of the Utility Model

[0004] The main object of the utility model is to propose a pot lid and a cooking appliance, aiming to improve the sealing performance of the pot lid, reduce the intrusion of water vapor, and enhance the overall reliability of the cooking appliance.

[0005] To achieve the above object, the utility model proposes a pot lid, which includes:

[0006] A cover body, the cover body forms a wire outlet hole;

[0007] A seal, the seal is arranged in the wire outlet hole, and the seal forms a seal hole; and

[0008] A heating structure, the heating structure is arranged on the cover body, and part of the heating structure passes through the seal hole for electrical connection with an external power supply.

[0009] In one embodiment, the seal is a sealing ring, and the sealing ring forms the seal hole;

[0010] The outer side wall of the outer ring of the sealing ring abuts against the hole wall of the wire outlet hole, and the hole wall of the seal hole wraps part of the heating structure.

[0011] In one embodiment, the heating structure includes a heating film and two conductive parts, and the two conductive parts are respectively electrically connected to the heating film and an external power supply;

[0012] The pot lid includes two seals, and each conductive part is limited in the seal hole of one seal.

[0013] In one embodiment, the conductive member includes a conductive sheet and a wire. The conductive sheet is electrically connected to the heating film;

[0014] One end of the wire is detachably connected to the conductive sheet, and the other end of the wire is used for electrical connection to an external power supply. The wire passes through the sealing hole so that the sealing member wraps the wire.

[0015] In one embodiment, the conductive sheet includes a contact sheet and a conductive terminal that are electrically connected. The contact sheet is welded to the heating film, and the conductive terminal is used for electrical connection to an external power supply.

[0016] In one embodiment, the wire includes a wire body and a connection terminal. The wire body is disposed in the sealing hole, and the connection terminal is connected to one end of the wire body;

[0017] One of the conductive terminal and the connection terminal is formed with a slot, and the other of the conductive terminal and the connection terminal is a plug piece, and the plug piece can be inserted into the slot.

[0018] In one embodiment, the heating structure further includes a gland member. The gland member abuts against the conductive sheet to press and fix the conductive sheet.

[0019] In one embodiment, the gland member includes at least one fixing seat and a gland plate. The fixing seat is fixed to the cover body, and the gland plate is connected to the fixing seat.

[0020] In one embodiment, the gland member includes two fixing seats. The two fixing seats are arranged on both sides of the conductive sheet in a straight line. The gland plate is located between the two fixing seats, and the gland plate is arranged parallel to the conductive sheet.

[0021] In one embodiment, the cover body includes an upper cover and a heat-conducting substrate. The upper cover is connected to the heat-conducting substrate;

[0022] The heat-conducting substrate is provided with an air inlet, and the upper cover is provided with an air outlet channel. The air outlet channel communicates the air inlet and the external space.

[0023] In one embodiment, the upper cover is provided with a relief opening. The heat-conducting substrate seals the relief opening. The cover body further includes a first sealing ring. The first sealing ring is disposed around the relief opening and is located between the heat-conducting substrate and the upper cover;

[0024] And / or, the heating structure includes a heating film. The heating film is disposed on the heat-conducting substrate. Part of the heating film is disposed around the air inlet. The pot lid further includes a second sealing ring. The second sealing ring is disposed at the air inlet. The second sealing ring is used to seal the heating film and the air outlet channel at the periphery of the air inlet;

[0025] And / or, the heat-conducting substrate is a glass substrate or a ceramic substrate.

[0026] The present utility model further provides a cooking appliance, which includes:

[0027] A pot body; and

[0028] The above-mentioned pot lid, and the pot lid is connected to the pot body.

[0029] The pot lid in the technical solution of the present utility model includes a lid body, a seal and a heating structure. The lid body forms a wire outlet hole, the seal is arranged in the wire outlet hole, the seal is formed with a seal hole, the heating structure is arranged on the lid body, and part of the heating structure passes through the seal hole for electrical connection with an external power supply. By providing the seal, on the one hand, it can seal the wire outlet hole for leading out the heating structure to prevent external water vapor from invading the inside of the pot lid through the wire outlet hole. On the other hand, the seal is formed with a seal hole, and part of the heating structure passes through the seal hole, so that the seal can also seal the heating structure, improving the sealing performance of the pot lid, reducing the intrusion of water vapor, and preventing the heating structure from being corroded and even failing, so as to improve the overall reliability of the cooking appliance. Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0031] Figure 1 It is a schematic structural diagram of a heating film and a heat-conducting substrate in an embodiment of the present utility model;

[0032] Figure 2 For Figure 1 The partial enlarged view at A in

[0033] Figure 3 It is a schematic structural diagram of a heating film and a heat-conducting substrate in another perspective in an embodiment of the present utility model;

[0034] Figure 4 It is a schematic structural diagram of a pot lid in an embodiment of the present utility model;

[0035] Figure 5 For Figure 4 The partial enlarged view at B in

[0036] Figure 6 For Figure 4 The partial enlarged view at C in

[0037] Figure 7 This is a schematic structural diagram of a cooking appliance in an embodiment of the present utility model.

[0038] Explanation of the reference numerals in the drawings:

[0039] 100, lid; 1, cover body; 11, upper cover; 111, wire outlet hole; 113, relief opening; 12, heat conduction substrate; 121, heat-resistant substrate; 122, air inlet; 13, installation cavity; 14, first sealing ring; 2, heating structure; 21, heating film; 211, main body film; 212, joint part; 22, conductive sheet; 221, contact piece; 222, conductive terminal; 23, pressing cover part; 231, fixing seat; 232, pressing cover plate; 24, wire; 241, wire body; 242, connection terminal; 2a, slot; 2b, insertion piece; 3, sealing member; 4, second sealing ring; 500, cooking appliance; 501, pot body.

[0040] The realization, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0041] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0042] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, if descriptions such as "first", "second", etc. are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0044] During the cooking process of the rice cooker, the steam generated in the pot body encounters the area with a lower temperature on the upper cover, and inevitably, condensed water will be generated. On the one hand, the generated condensed water will affect the electronic components inside the rice cooker. On the other hand, part of the condensed water will also remain attached to the cover body, and it is easy to fall into the pot when opening the rice cooker, affecting the dining taste.

[0045] The rice cooker in the related art provides an upper cover heating technology. For example, by setting a heating element on the upper cover to keep the temperature of the upper cover consistent with the temperature in the pot body, thereby reducing condensed water. However, when the heating element is connected to an external power supply, it inevitably passes through the upper cover, thereby generating openings at the upper cover. These openings will allow external water vapor or water vapor during the heating of the cooking appliance to invade the inside of the upper cover, causing corrosion and failure of the heating element.

[0046] Based on this, please refer to Figures 1 to 7 As shown, the present utility model proposes a pot lid 100, and the pot lid 100 includes a cover body 1, a sealing member 3, and a heating structure 2. The cover body 1 forms a wire outlet hole 111, the sealing member 3 is arranged in the wire outlet hole 111, the sealing member 3 forms a sealing hole, and the heating structure 2 is arranged on the cover body 1, and part of the heating structure 2 passes through the sealing hole for electrical connection with an external power supply.

[0047] In this embodiment, the pot lid 100 is applied to a cooking appliance 500. The cooking appliance 500 includes, but is not limited to, a rice cooker, a pressure rice cooker, an electric soup pot, an electric Chinese medicine pot, and an electric clay pot. The pot lid 100 is used to cover the main body of the cooking appliance 500 (such as the pot body 501). The pot lid 100 includes a cover body 1 and a heating structure 2. The cover body 1 is the main body support component of the pot lid 100. The cover body 1 can be a shell-like structure or a plate-like structure. The cover body 1 itself forms an installation cavity 13 so that the heating structure 2 and the like can be limited and arranged in the installation cavity 13.

[0048] In this embodiment, the heating structure 2 is used to generate heat for the pot lid 100. The heating structure 2 can be an electric wire structure, an electrothermal film structure, an infrared heating structure, etc. provided in the installation cavity 13. By arranging the heating structure 2 in the installation cavity 13 of the cover body 1 and electrically connecting the heating structure 2 to an external power source, the heating structure 2 can heat the entire pot lid 100. Taking the heating film 21 of the heating structure 2 as an example, the heating film 21 is a film structure, which is coated or attached to the heat-conducting substrate 12 made of a glass substrate. The heating element can be made of heat-generating materials such as graphene or metal. The pot lid 100 is provided with a heat-conducting substrate 12, and the heating element is usually attached to the surface of the heat-conducting substrate 12. When the pot lid 100 is closed on the cooking cavity of the cooking appliance 500, the heat-conducting substrate 12 is in direct contact with the cooking cavity, and the heating structure 2 is arranged on the side of the heat-conducting substrate 12 facing away from the cooking cavity. During the cooking process, the cooking appliance 500 can control the heating structure 2 on the upper cover 11 (pot lid 100) to be energized and generate heat. At this time, the heat generated by the heating structure 2 can be conducted to the heat-conducting substrate 12. By controlling the operating power of the heating structure 2, the temperature of the heat-conducting substrate 12 can be kept consistent with the temperature of the cooking cavity of the pot body, which can prevent the water vapor in the pot body from spreading to the pot lid 100 and forming condensed water on the pot lid 100, and avoid condensed water droplets falling into the cooking cavity when the pot lid 100 is opened, so that the cooked ingredients can have a better taste.

[0049] In this embodiment, on the basis of forming the installation cavity 13, the cover body 1 is further provided with a wire outlet hole 111 communicating with the installation cavity 13; the pot lid 100 further includes a seal 3, and the seal 3 is arranged at the wire outlet hole 111. At the same time, the seal 3 is formed with a sealing hole. When the heating structure 2 is connected to an external power source, such as when connected through a wire 24, the wire body 241 of the wire 24 can pass through the sealing hole, so that the sealing hole wraps or surrounds the wire body 241 of the wire 24 of the heating structure 2 for sealing the installation cavity 13.

[0050] It can be understood that when the heating structure 2 is connected to an external power supply, it is inevitable to open holes in the lid 1 and pass through the lid 1. These holes and gaps for leading out the heating structure 2 are extremely likely to allow external water vapor to invade the interior of the installation cavity 13, causing corrosion to the internal circuit structure and the heating structure 2. After long-term use, it is easy for the heating structure 2 and the pot lid 100 having the heating structure 2 to fail. Based on this, a seal 3 is provided at the wire outlet hole 111 of the lid 1. On the one hand, the seal 3 tightly abuts against the hole wall of the wire outlet hole 111 to prevent water vapor from invading the installation cavity 13 through the wire outlet hole 111. On the other hand, part of the heating structure 2, such as the wire body 241 of the wire 24, also passes through the seal 3, so that the seal 3 wraps the wire body 241 of the wire 24 to prevent water vapor from invading the installation cavity 13 from the wire 24 of the heating structure 2. Among them, the seal 3 can be a sealing ring, such as an elastic rubber sealing ring or a silicone rubber sealing ring, or it can be a sealing filler, such as a flexible filler, etc., which is not limited here.

[0051] In one embodiment, the seal 3 is a sealing ring, and the sealing ring forms a sealing hole; the outer side wall of the outer ring of the sealing ring abuts against the hole wall of the wire outlet hole 111, and the hole wall of the sealing hole wraps part of the heating structure 2.

[0052] It can be understood that the seal 3 is a sealing ring, and a sealing hole is formed in the sealing ring, so that the outer side wall of the outer ring of the sealing ring can abut against the hole wall of the wire outlet hole 111, and the hole wall of the sealing hole inside the sealing ring can tightly wrap the wire body 241 of the wire 24 of the heating structure 2, so that the sealing ring can seal the gap at the intersection of the wire outlet hole 111 and the wire 24 of the heating structure 2, preventing water vapor from invading the installation cavity 13 from the gap at this place, thereby improving the overall sealing performance of the pot lid 100 and the overall reliability of the cooking appliance 500.

[0053] In one embodiment, the heating structure 2 includes a heating film 21 and two conductive members, and the two conductive members are respectively electrically connected to the heating film 21 and an external power supply; the pot lid 100 includes two seals 3, and each conductive member is limited in the sealing hole of a seal 3.

[0054] In this embodiment, the heating film 21 is made of graphene material. The heating film 21 can be arranged on the lid 1 by means of attachment, printing, brushing, etc. Usually, a heat-conducting substrate 12 is arranged in the lid 1. The heat-conducting substrate 12 can be made of high borosilicate glass material, and the heating film 21 is arranged on the surface of the heat-conducting substrate 12, such as by means of coating or pasting. By inputting a direct current to the heating film 21, the heating film 21 is energized to generate heat, so as to realize the overall heating of the pot lid 100.

[0055] In one embodiment, such as Figure 1 and Figure 2As shown in the figure, the heating film 21 includes a main body film 211 and a connection head 212 connected to the main body film 211. A part of the conductive sheet 22 is welded to the connection head 212, and the other part of the conductive sheet 22 is used for electrical connection with an external power source.

[0056] It can be understood that the main body film 211 is the main structure of the heating film 21. The main body film 211 is usually in a strip structure. The width of the strip structure can be kept consistent, and the strip structure is bent and wound on the temperature-resistant base material 121 along the length direction, so that the main body film 211 covers as much surface of the temperature-resistant base material 121 as possible, thereby increasing the heating surface of the heating film 21 and improving the heating effect.

[0057] Furthermore, the heating film 21 further includes a connection head 212 connected to the main body film 211. The connection head 212 and the main body film 211 can be integrally connected or separately arranged and electrically connected through a conductive material or a conductive structure. The connection head 212 is used for electrical connection with an external power source to input current to the main body film 211 and make the main body film 211 generate heat when energized, so as to increase the temperature of the pot lid 100 and reduce the generation of condensed water. Specifically, the main body film 211 in a strip structure has two ends. The heating film 21 includes two connection heads 212, and each connection head 212 is connected to one end of the main body film 211, so that one of the two connection heads 212 is electrically connected to the positive pole of the power source, and the other of the two connection heads 212 is electrically connected to the negative pole of the power source to form a closed loop.

[0058] It can be understood that the conductive sheet 22 includes a first part for electrical connection with the connection head 212 and a second part for electrical connection with an external power source. The first part and the second part can be integrally formed or separately arranged by means of welding, plugging, clamping, etc., which is not limited here; the above-mentioned first part is welded to the connection head 212, and a conductive layer is coated on the connection head 212. The conductive layer can be a silver paste conductive layer, and then by welding the first part to the conductive layer, the overall welding connection of the conductive sheet 22 and the connection head 212 is realized, and the circuit of the heating film 21 is conducted and heated after being energized. The first part itself is in a sheet or plate shape, and it has a large contact area and conductive area. A stable and firm connection can be formed through the first part, thereby enhancing the connection strength between the heating film 21 and the external power source.

[0059] At the same time, on the basis that the second part realizes a firm electrical connection with the first part, the second part is electrically connected to an external power source. The second part can be a socket or a pin structure that can be quickly plugged into the wiring of the external power source, or a sheet structure arranged at an angle with the first part, so as to be electrically connected to the wiring of the external power source.

[0060] In this embodiment, the heating structure 2 further includes two conductive members, which are wires 24 or conductive connectors. The heating film 21 has a positive electrode and a negative electrode. The two conductive members are respectively connected to the positive electrode and the negative electrode of the heating film 21. At the same time, the two conductive members are connected to an external power source to input current to the heating film 21 to make the heating film 21 heat up. The pot lid 100 includes two seals 3. The two seals 3 can be provided in two wire outlet holes 111 or in one wire outlet hole 111, so that each seal 3 corresponds to a conductive member, and the sealing hole of each seal 3 wraps around a conductive member. In another embodiment, the pot lid 100 includes one seal 3, and one seal 3 is provided with one sealing hole or two sealing holes, and one sealing hole wraps two conductive members at the same time, or each sealing hole wraps one conductive member to seal the intersection of the conductive member and the pot lid 100.

[0061] In one embodiment, the conductive member includes a conductive sheet 22 and a wire 24. The conductive sheet 22 is electrically connected to the heating film 21; one end of the wire 24 is detachably connected to the conductive sheet 22, and the other end of the wire 24 is used for electrical connection to an external power source. The wire 24 passes through the sealing hole so that the seal 3 wraps the wire 24.

[0062] In this embodiment, the conductive member includes a conductive sheet 22 and a wire 24. On the one hand, the conductive sheet 22 is conductively connected to the heating film 21, such as by welding connection, conductive plug-in connection, connector connection, etc. On the other hand, the conductive sheet 22 is electrically connected to the wire 24 to transmit external current into the heating film 21. The conductive sheet 22 is a sheet-like or plate-like structure with connection grooves, connection protrusions and other connection structures, so that the connection area between the conductive sheet 22 and the heating film 21 can be increased, thereby increasing the connection strength, and further increasing the overall connection firmness between the external power source and the heating film 21.

[0063] In this embodiment, as Figure 4 and Figure 5 shown, the heating structure 2 further includes a wire 24. One end of the wire 24 is detachably connected to the conductive sheet 22, and the other end of the wire 24 is used for connection to an external power source to supply current to the heating film 21 through the conductive sheet 22 and make the heating film 21 heat up. At the same time, the wire 24 passes through the sealing hole of the lid body 1, and the inner hole wall of the sealing hole can wrap the wire body 241 of the wire 24, so as to seal the gap between the wire body 241 of the wire 24 and the hole wall of the wire outlet hole 111, to prevent water vapor from invading from the gap and improve the sealing performance of the installation cavity 13 and the pot lid 100.

[0064] It can be understood that one end of the wire 24 is used for electrical connection with the wiring of an external power supply, or the wire 24 directly extends out of the cover body 1 and is electrically connected to the external power supply. The other end of the wire 24 is detachably connected to the conductive terminal 222 of the conductive sheet 22. Specifically, the end of the wire 24 far from the connection with the external power supply is conductively connected to the conductive terminal 222 of the conductive sheet 22 by means of plugging, clamping, or screwing, so as to realize the detachable connection between the wire 24 and the conductive sheet 22. With such a setting, on the basis that the conductive sheet 22 is welded to the joint part 212, during assembly, the wire 24 can be directly plugged onto the conductive terminal 222 of the conductive sheet 22, which is convenient for the installation of the wire 24 and the conductive sheet 22. At the same time, the wire 24 is not restricted by traditional welding connections, and the wiring layout of the wire 24 can be facilitated.

[0065] It can be understood that one end of the wire 24 is fixedly connected or detachably connected to the conductive sheet 22, and the other end of the wire 24 extends out of the cover body 1 through the wire outlet hole 111 to be electrically connected to an external power supply or other circuit structures. The pot lid 100 is also provided with a seal 3 corresponding to the wire outlet hole 111. The seal 3 is arranged in the wire outlet hole 111 or at the periphery of the wire outlet hole 111. On the one hand, the seal 3 can abut against the hole wall of the wire outlet hole 111 or the port of the wire outlet, and on the other hand, the wire outlet hole 111 can surround and wrap the outer wall of the wire body 241 of the wire 24 to achieve the overall sealing of the wire outlet hole 111, thereby realizing the sealing of the sealed cavity and preventing external water vapor or impurities from entering the installation cavity 13 through the wire outlet hole 111 and damaging the internal structures such as the installation cavity 13 and the heating film 21.

[0066] In an embodiment, as Figures 1 to 5 shown, the conductive sheet 22 includes a contact piece 221 and a conductive terminal 222. The conductive terminal 222 is electrically connected to the contact piece 221, and the contact piece 221 is welded to the joint part 212 of the heating film 21. The conductive terminal 222 is used for electrical connection with an external power supply.

[0067] It can be understood that the first part for welding connection with the joint part 212 is the contact piece 221, and the second part for electrical connection with an external power supply is the conductive terminal 222. The plane where the maximum cross-section of the contact piece 221 is located is parallel to the joint part 212 of the heating film 21 and is welded. The conductive terminal 222 is electrically connected to the joint part 212, such as by welding, conductive plugging, or conductive fixing (such as fixing by bolts), etc. Correspondingly, the conductive terminal 222 can be in the shape of a sheet or a plate, and the plane where the maximum cross-section of the conductive terminal 222 is located is arranged at an angle to the plane where the maximum cross-section of the contact piece 221 is located to facilitate electrical connection with the wiring of an external power supply; the conductive terminal 222 can also be a plug or socket structure and can be directly conductively plugged with an external conductor with a corresponding plug-in structure, which is not limited here.

[0068] It can be understood that by providing the contact piece 221, the welding connection area between the conductive piece 22 and the joint portion 212 is increased, so that on the basis of maintaining conductivity, the connection strength between the conductive piece 22 and the joint portion 212 is increased, so as to increase the connection strength between the wiring of the external power supply and the joint portion 212, prevent the connection at the joint from breaking during transportation and use, and improve the product reliability.

[0069] In one embodiment, as Figure 4 and Figure 5 shown, the wire 24 includes a wire body 241 and a connection terminal 242, and the connection terminal 242 is connected to the end of one end of the wire body 241; one of the conductive terminal 222 and the connection terminal 242 is formed with a slot 2a, and the other of the conductive terminal 222 and the connection terminal 242 is an insertion piece 2b, and the insertion piece 2b can be inserted into the slot 2a.

[0070] It can be understood that the connection terminal 242 and the conductive terminal 222 can be detachably connected by means of plug-in connection. One of the connection terminal 242 of the wire 24 far from the end electrically connected to the external power supply or the conductive terminal 222 of the conductive piece 22 is provided with a plug, and the plug can be a cylindrical plug, a flat insertion piece 2b, or a connector, etc. Correspondingly, the other of the connection terminal 242 of the wire 24 far from the end electrically connected to the external power supply or the conductive terminal 222 of the conductive piece 22 is provided with a jack or a slot 2a to cooperate with the plug for insertion. That is to say, the structures and shapes of the conductive terminal 222 and the connection terminal 242 are not limited, and as long as the structure that can realize the mutual insertion of the conductive terminal 222 and the connection terminal 242 is applicable to this application.

[0071] In one embodiment, as Figures 1 to 5 shown, the heating structure 2 further includes a gland member 23, and the gland member 23 is fixed to the cavity wall of the installation cavity 13 and abuts against the conductive piece 22 to be used for gland fixing the conductive piece 22.

[0072] It can be understood that the gland member 23 is provided on the temperature-resistant base material 121 or the cavity wall of the cover body 1 installation cavity 13, and the other end of the gland member 23 extends towards the surface of the contact piece 221. The gland member 23 is formed with a gland plane, and the gland plane is parallel or at an angle to the plane where the maximum cross-section of the contact piece 221 is located, so as to gland to the side of the conductive piece 22 facing away from the joint portion 212. The gland member 23 can be a sheet-like or plate-like structure, or a gland strip, a gland block and other structures, which are not limited herein.

[0073] It can be understood that the gland member 23 can be provided on the temperature-resistant substrate 121 for setting the heating film 21, or can be provided on other areas of the cover body 1, that is, on the cavity wall of the installation cavity 13 of the cover body 1. The gland member 23 can press the contact piece 221 and / or the conductive terminal 222 of the conductive sheet 22, so as to further improve the connection strength between the conductive sheet 22 and the joint portion 212, so that in the special case where the welding between the contact piece 221 on the conductive sheet 22 and the joint portion 212 fails, the normal electrical connection between the conductive sheet 22 and the joint portion 212 can also be ensured through the gland member 23, avoiding product failure.

[0074] In one embodiment, as Figure 2 shown, the gland member 23 includes at least one fixing base 231 and a gland plate 232. The fixing base 231 is fixed on the cover body 1, and the gland plate 232 is connected to the fixing base 231; optionally, the material of the gland member 23 is ceramic or glass.

[0075] It can be understood that the fixing base 231 is a base for fixing the gland plate 232. The fixing base 231 can be adhesively bonded to the temperature-resistant substrate 121 or the cavity wall of the installation cavity 13 of the cover body 1 through an adhesive, or can be integrally formed with the cover body 1. The fixing base 231 is provided at the periphery of the joint portion 212, keeping a small distance from the joint portion 212. One end of the gland plate 232 is connected to the fixing base 231, and the other end extends towards the joint portion 212, and the gland plate 232 presses the surface of the contact piece 221 of the conductive sheet 22, so that the connection between the conductive sheet 22 and the joint portion 212 is more firm, avoiding the separation of the conductive sheet 22 and the joint portion 212 during transportation or use.

[0076] In one embodiment, as Figure 2 shown, the gland member 23 includes two fixing bases 231. The two fixing bases 231 are arranged along a straight line on both sides of the conductive sheet 22, and the gland plate 232 is located between the two fixing bases 231, and the gland plate 232 is arranged parallel to the conductive sheet 22.

[0077] It can be understood that the gland member 23 includes two fixing bases 231 arranged along a straight line, so that the gland plate 232 is located between the two fixing bases 231. On the basis that the fixing bases 231 do not affect each other with the joint portion 212 or the main film 211 of the heating film 21, both ends of the gland plate 232 can be effectively fixed, and the entire plate surface of the gland plate 232 can be pressed against the surface of the conductive sheet 22, thereby improving the connection strength between the gland member 23 itself and the cover body 1, as well as the fixing effect of the gland member 23 on the conductive sheet 22.

[0078] In one embodiment, as Figures 4 to 7As shown, the cover body 1 includes an upper cover 11 and a heat-conducting substrate 12. The upper cover 11 is connected to the heat-conducting substrate 12 and encloses to form an installation cavity 13. The heat-conducting substrate 12 is provided with an air inlet 122, and the upper cover 11 is provided with an air outlet channel that communicates the air inlet 122 with the external space.

[0079] In this embodiment, the cover body 1 includes an upper cover 11 and a heat-conducting substrate 12. The heat-conducting substrate 12 includes a bottom shell and a heat-resistant base material 121. The bottom shell is connected to the upper cover 11, and the heat-resistant base material 121 is arranged on the bottom shell, so that the bottom shell, the heat-resistant base material 121, and the upper cover 11 jointly enclose to form the installation cavity 13. The heating film 21, the conductive sheet 22, and the pressing cover member 23 in the heating structure 2 are all arranged in the installation cavity 13, and the wire 24 extends into the installation cavity 13 and is fixedly connected or detachably connected to the conductive sheet 22.

[0080] It can be understood that the heat-conducting substrate 12 is provided with an air inlet 122, that is, the heat-resistant base material 121 is provided with an air inlet 122. The upper cover 11 is provided with an air outlet channel. One end of the air outlet channel communicates with the air inlet 122, and the other end of the air outlet channel communicates with the external space. When the pot lid 100 is closed on the cooking appliance 500, the air inlet 122 communicates with the internal cavity of the cooking appliance 500. When heating and cooking food, the steam with a certain temperature will enter the air outlet channel from the air inlet 122 and be discharged into the external space through the air outlet channel to realize the discharge of steam. At this time, the steam discharge channel formed by the air inlet 122 and the air outlet channel is isolated from the installation cavity 13 to protect the internal heating structure 2 in the installation cavity 13 from being eroded by steam.

[0081] In one embodiment, as Figure 4 and Figure 6 shown, the upper cover 11 is provided with a relief opening 113, and the heat-conducting substrate 12 plugs the relief opening 113. The cover body 1 further includes a first sealing ring 14 that is arranged around the relief opening 113 and is located between the heat-conducting substrate 12 and the upper cover 11. It can be understood that the upper cover 11 is an overall shell-like structure with an internal depression, and a relief opening 113 is formed at one end of the upper cover 11. The heat-conducting substrate 12 is arranged at the relief opening 113 and plugs the relief opening 113, so that the upper cover 11 and the heat-conducting substrate 12 enclose to form the installation cavity 13. The first sealing ring 14 is arranged around the position of the relief opening 113 and is located between the heat-conducting substrate 12 and the upper cover 11 to seal the gap between the heat-conducting substrate 12 and the upper cover 11, ensure the overall sealing performance of the installation cavity 13, and protect the internal heating structure 2 in the installation cavity 13 from being eroded by steam.

[0082] Optionally, as Figure 7As shown, the heating film 21 is disposed on the heat-conducting substrate 12, and a part of the heating film 21 is arranged around the air inlet 122. The pot lid 100 further includes a second sealing ring 4, which is disposed at the air inlet 122 and is used to seal the heating film 21 and the air outlet channel at the periphery of the air inlet 122. It can be understood that the air inlet 122 is provided on the heat-resistant substrate 121 of the heat-conducting substrate 12. When the heating film 21 is disposed on the heat-resistant substrate 121, a part of the heating film 21 needs to be arranged around the air inlet 122 to prevent the heating film 21 from covering the air inlet 122 and ensure smooth steam flow. At the same time, a second sealing ring 4 is also provided at the air inlet 122. The second sealing ring 4 includes a main body portion and a covering portion. The main body portion is used to seal the area where the air inlet 122 communicates with the air outlet channel, and the covering portion extends diffusely from the main body portion toward the periphery of the air inlet 122 to cover the heating film 21 at the periphery of the air inlet 122 and avoid damage to the heating film 21 caused by high-temperature steam for a long time. Optionally, the heat-conducting substrate 12 is a glass substrate or a ceramic substrate.

[0083] The present invention further provides a cooking appliance 500, such as Figure 7 As shown, the cooking appliance 500 includes a pot body 501 and the above-mentioned pot lid 100, and the pot lid 100 is connected to the pot body 501. The specific structure of the pot lid 100 refers to the foregoing embodiments. Since the cooking appliance 500 adopts all the technical solutions of the foregoing embodiments, it at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, which will not be elaborated herein one by one.

[0084] It can be understood that the cooking appliance 500 can be an electric rice cooker, a pressure electric rice cooker, an electric soup pot, an electric Chinese medicine decocting pot, an electric clay pot, etc. The pot body 501 includes a base, an electric heater disposed on the base, and a rice cooking container disposed in the base and sitting on the electric heater. Among them, one end of the lid body 1 of the pot lid 100 is rotatably hinged to the base, and the other end is buckled to the base through a buckle, so as to open the buckle to open the pot lid 100.

[0085] The above is only an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A pot lid, characterized in that, The pot lid includes: A lid body, the lid body forming a wire outlet hole; A seal, the seal being disposed in the wire outlet hole, the seal forming a seal hole; and A heating structure, the heating structure being disposed on the lid body, and part of the heating structure passing through the seal hole for electrical connection to an external power source.

2. The pot lid according to claim 1, characterized in that, The seal is a sealing ring, and the sealing ring forms the seal hole; The outer side wall of the outer ring of the sealing ring abuts against the hole wall of the wire outlet hole, and the hole wall of the seal hole wraps part of the heating structure.

3. The pot lid according to claim 1, wherein The heating structure includes a heating film and two conductive members, and the two conductive members are respectively electrically connected to the heating film and an external power source; The pot lid includes two of the seals, and each conductive member is limited and disposed in the seal hole of one of the seals.

4. The pot lid according to claim 3, characterized in that, The conductive member includes a conductive sheet and a wire, and the conductive sheet is electrically connected to the heating film; One end of the wire is detachably connected to the conductive sheet, and the other end of the wire is for electrical connection to an external power source, and the wire passes through the seal hole so that the seal wraps the wire.

5. The pot lid according to claim 4, wherein, The conductive sheet includes a contact piece and a conductive terminal that are electrically connected, the contact piece is welded to the heating film, and the conductive terminal is for electrical connection to an external power source.

6. The pot lid according to claim 5, characterized in that, The wire includes a wire body and a connection terminal, the wire body is disposed in the seal hole, and the connection terminal is connected to the end of one end of the wire body; One of the conductive terminal and the connection terminal forms a slot, and the other of the conductive terminal and the connection terminal is a plug piece, and the plug piece can be inserted into the slot.

7. The pot lid according to claim 4, characterized in that, The heating structure further includes a pressing cover member, and the pressing cover member abuts against the conductive sheet for pressing and fixing the conductive sheet.

8. The pot lid according to claim 7, characterized in that, The pressing cover member includes at least one fixing seat and a pressing cover plate, the fixing seat is fixed to the lid body, and the pressing cover plate is connected to the fixing seat.

9. The pot lid according to claim 8, characterized in that, The pressing cover member includes two of the fixing seats, the two fixing seats are arranged along a straight line on both sides of the conductive sheet, the pressing cover plate is located between the two fixing seats, and the pressing cover plate is arranged parallel to the conductive sheet.

10. The pot lid according to any one of claims 1 to 9, characterized in that, The lid body includes an upper lid and a heat-conducting substrate, and the upper lid is connected to the heat-conducting substrate; The heat-conducting substrate is provided with an air inlet, the upper lid is provided with an air outlet channel, and the air outlet channel communicates the air inlet and the external space.

11. The pot lid according to claim 10, characterized in that, The upper lid is provided with a relief opening, the heat-conducting substrate seals the relief opening, and the pot lid further includes a first sealing ring, and the first sealing ring is arranged around the relief opening and is located between the heat-conducting substrate and the upper lid; And / or, the heating structure includes a heating film, the heating film is disposed on the heat-conducting substrate, part of the heating film is arranged around the air inlet, and the pot lid further includes a second sealing ring, and the second sealing ring is disposed at the air inlet, and the second sealing ring is used for sealing the heating film and the air outlet channel at the periphery of the air inlet; And / or, the heat-conducting substrate is a glass substrate or a ceramic substrate.

12. A cooking appliance, characterized in that, The cooking appliance includes: A pot body; and The pot lid according to any one of claims 1 to 11, the pot lid being connected to the pot body.

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