Cover body and cooking utensil

Abstract

The utility model discloses a cover body and a cooking utensil. The cover body comprises a heat preservation plate, a heating piece and a thermal fuse link. The heating piece is arranged on the insulation board. The heating element is electrically connected with the power supply through the thermal fuse link, the heating element can form an access with the power supply when the thermal fuse link is not fused, and the heating element and the power supply form an open circuit after the thermal fuse link is fused. According to the cover body, the heat preservation plate can be fused when the heat preservation plate reaches the fusing temperature, so that continuous heating of the heating piece is prevented, and the situation that other parts are damaged due to overheating of the heat preservation plate can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and more specifically to a cover and a cooking utensil. Background Technology

[0002] Currently, some rice cookers, in order to achieve better heat preservation and a more three-dimensional heating method, will have a heating device installed on the top to assist heating, such as a heating wire installed in the lid.

[0003] However, in current top-heating devices, the power is mostly supplied directly by the rice cooker's power board, which is directly controlled by a relay to turn on or off. This can easily lead to a short circuit in the relay, causing the top-heating device to continue heating, resulting in overheating inside the lid and damage to components, posing a potential safety hazard.

[0004] Therefore, a lid and cooking utensil are needed to at least partially solve the above problems. Utility Model Content

[0005] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] To at least partially solve the above problems, a first aspect of the present invention provides a lid for a cooking utensil, the lid comprising:

[0007] Insulation board;

[0008] A heating element, wherein the heating element is disposed on the insulation plate;

[0009] A thermal fuse is provided, wherein the heating element is electrically connected to the power source through the thermal fuse, wherein when the thermal fuse is not melted, the heating element can form a circuit with the power source, and when the thermal fuse is melted, the heating element and the power source form an open circuit.

[0010] According to the cover of this application, the insulation board can melt when it reaches the melting temperature, thereby preventing the heating element from continuing to heat up and avoiding damage to other components due to overheating of the insulation board.

[0011] Optionally, the thermal fuse is disposed at the electrical terminal of the heating element, and the cover further includes an electrical connection assembly for connecting to the power source. The thermal fuse is electrically connected between the electrical terminal and the electrical connection assembly. This arrangement facilitates the rapid assembly of the thermal fuse.

[0012] Optionally, the cover may also include a protective sleeve.

[0013] The protective sleeve covers the connection between the heating element and the thermal fuse, and / or the protective sleeve covers the connection between the electrical connection assembly and the thermal fuse. This arrangement improves the insulation at the connection between the thermal fuse and other components and prevents exposed sharp objects from appearing there.

[0014] Optionally, the thermal fuse is located inside the protective sleeve. This configuration protects the thermal fuse and improves safety.

[0015] Optionally, the cover includes a reflective layer connected to the insulation board, and the heating element is located between the insulation board and the reflective layer. With this configuration, the heat generated by the heating element can be concentrated for heating food, reducing damage to other components.

[0016] Optionally, the cover further includes an inner liner, with the insulation board disposed within the inner liner and positioned between the inner liner and the reflective layer. This configuration prevents the inner liner from melting and avoids overheating damage to components on the top of the cover.

[0017] Optionally, the cover further includes a cover plate disposed within the inner liner, and the reflective layer is located between the cover plate and the inner liner. This arrangement improves the effect of preventing heat from diffusing upwards.

[0018] Optionally, the cover includes an adhesive layer that connects the insulation board and the heating element. According to this solution, the heating element is simple and secure to install.

[0019] Optionally, the melting temperature of the thermal fuse is 155–175°C. According to the above configuration, the lining can be protected from melting by the heated component during a short circuit.

[0020] A second aspect of this application provides a cooking appliance, the cooking appliance including the lid described in the first aspect above.

[0021] The cooking appliance according to this utility model has similar technical effects to the lid described in the first aspect above. Attached Figure Description

[0022] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention.

[0023] In the attached image:

[0024] Figure 1This is a schematic diagram of a cover according to one embodiment of this application;

[0025] Figure 2 An exploded view of the cover according to one embodiment of this application; and

[0026] Figure 3 This is a schematic diagram showing the connection of a heating element, a power connection assembly, and a thermal fuse according to one embodiment of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100: Cover body; 110: Lining

[0029] 120: Insulation board; 130: Heating element

[0030] 140: Thermal fuse 141: Electrical terminal

[0031] 142: Protective sleeve; 150: Power connection assembly

[0032] 151: Temperature-resistant cable 152: Connector

[0033] 160: Reflective layer; 170: Adhesive layer

[0034] 180: Cover plate Detailed Implementation

[0035] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0036] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0037] The ordinal numbers such as "first" and "second" used in this invention are merely identifiers and do not have any other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of a "second component," and the term "second component" does not imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0038] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

[0039] This application provides a cooking appliance including a lid 100 and a pot body (not shown). The lid 100 has a shape substantially corresponding to the pot body. The lid 100 is closable and openable on the pot body. The lid 100 can be pivotally connected to the pot body, for example, via a pivot axis, and can pivot freely about the axis of the pivot axis between a closed position and an open position relative to the pot body to facilitate closing and opening the pot body.

[0040] The cooker body includes an inner pot and has a cylindrical storage compartment. The inner pot can be easily placed into or removed from the storage compartment for convenient cleaning. The inner pot is usually made of metal and has a circular opening on its upper surface for holding materials to be heated, such as rice or soup.

[0041] The pot body includes a heating device for heating the inner pot. This heating device is located below the inner pot. The heating device can be a device such as a heating plate.

[0042] When the lid 100 is closed on the pot body, it covers the inner pot, forming a cooking space between them. The lid 100 usually also has a pot opening sealing ring, which can be made of, for example, rubber material, and is positioned between the lid 100 and the inner pot to seal the cooking space when the lid 100 is closed.

[0043] It is understood that the cooking appliance according to this application can be a rice cooker, an electric pressure cooker or other cooking appliances, and the cooking appliance can have various functions such as cooking porridge in addition to cooking rice.

[0044] refer to Figure 1 , Figure 2 and Figure 3 The cover 100 includes an insulation plate 120, a heating element 130, and a thermal fuse 140. The heating element 130 is disposed on the insulation plate 120. The heating element 130 is connected to a power source through the thermal fuse 140, wherein when the thermal fuse 140 is not melted, the heating element 130 can form a circuit with the power source, and when the thermal fuse 140 melts, the heating element 130 forms an open circuit with the power source.

[0045] According to the cover 100 of this application, the insulation plate 120 can melt when it reaches the melting temperature, thereby preventing the heating element 130 from continuing to heat and avoiding overheating of the insulation plate 120 and damaging other components.

[0046] The heating element 130 can be a component that generates heat when energized, such as a heating wire, heating strip, or heating coil. The thermal fuse 140 can be a fuse. The heating element 130 is attached to the insulation plate 120, and generates heat when energized and transfers it to the insulation plate 120, thereby allowing the insulation plate 120 to radiate heat into the cooking space to achieve top heating / top insulation.

[0047] Specifically, the cover 100 also includes an inner liner 110 and a cover plate 180, with the cover plate 180 disposed on the inner liner 110. Furthermore, an insulation plate 120 is located between the cover plate 180 and the inner liner 110 and is disposed on the inner liner 110, while a heating element 130 is disposed on the insulation plate 120. In other words, the insulation plate 120 is located between the inner liner 110 and the heating element 130. A fusible link 140 may be disposed on the heating element 130, for example, the heating element may be divided into two segments by the fusible link 140. As a preferred embodiment, the fusible link 140 is disposed at the end of the heating element 130. For example, the electrical terminal 141 of the heating element 130 may be provided with the aforementioned fusible link 140. The cover 100 also includes an electrical connection assembly 150 for connection to a power source, and the fusible link 140 is electrically connected between the electrical terminal 141 and the electrical connection assembly 150.

[0048] The power connection assembly 150 includes a heat-resistant cable 151 and a connector 152. The heat-resistant cable 151 is connected to a thermal fuse 140. In other words, one end of the thermal fuse 140 is connected to the heating element 130, and the other end is connected to the heat-resistant cable 151. The connector 152 is connected to the heat-resistant cable 151 and may have a plug-in interface for connecting to a power source. For example, the connector 152 connects to a relay on the power board of a cooking appliance. The heat-resistant cable 151 may be a heat-resistant braided wire.

[0049] As one implementation, the melting temperature of the thermal fuse 140 can be set to 155–175°C, which is approximately 20–30°C higher than the temperature of the insulation plate 120 when the cooking appliance is operating normally, and lower than the melting temperature of the inner lining 110 material. Therefore, when the relay is short-circuited and the heating element 130 continues to operate, the heating element 130 can be de-energized before the inner lining 110 melts.

[0050] refer to Figure 2A reflective layer 160 is also provided on the insulation plate 120, which can cover the entire heating element 130. In other words, the heating element 130 is located between the insulation plate 120 and the reflective layer 160. From the perspective of the entire lid 100, the reflective layer 160 is located above the liner 110, the insulation plate 120, and the heating element 130, thereby reflecting heat downwards and reducing heat transfer upwards. Thus, the reflective layer 160 can concentrate the heat generated by the heating element 130 for heating food, reducing damage to other components on the top of the lid 100. As one implementation, the reflective layer 160 can be a heat-reflecting layer such as an aluminum foil layer, a tin foil layer, a silver foil layer, or a gold foil layer.

[0051] In one alternative embodiment, the cover plate 180 can serve as a carrier for mounting other components. In another alternative embodiment, the cover plate 180 can also be used to insulate heat; that is, the cover plate 180 can also be referred to as a heat insulation plate, which, together with the reflective layer 160, significantly reduces the upward radiation of heat.

[0052] As an optional embodiment, the cover 100 includes an adhesive layer 170 for fixing the heating element 130. Specifically, the adhesive layer 170 connects the insulation board 120 and the heating element 130. The adhesive layer 170 can be an adhesive or backing material coated on the insulation board 120. This allows for quick and reliable assembly of the heating element 130. Preferably, one side of the adhesive layer 170 is connected to the insulation board 120, and the other side is partially connected to the heating element 130 and also partially connected to the reflective layer 160.

[0053] refer to Figure 3 A protective sleeve 142 is provided at the connection between the heating element 130 and the thermal fuse 140, covering the connection between the heating element 130 and the thermal fuse 140. Furthermore, a protective sleeve 142 is also provided at the connection between the electrical connection assembly 150 and the thermal fuse 140. Preferably, the thermal fuse 140 is located inside the protective sleeve 142. This not only protects the thermal fuse 140 but also improves the insulation of the connection between the thermal fuse 140 and other components, and prevents exposed sharp objects from appearing at this point. The protective sleeve 142 can be a fiberglass sleeve, a plastic sleeve, etc.

[0054] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0055] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are only for illustrative purposes. This utility model is not limited to the above embodiments. Many variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A lid for a cooking utensil, characterized in that, The cover includes: Insulation board; A heating element, wherein the heating element is disposed on the insulation plate; A thermal fuse is provided, wherein the heating element is electrically connected to the power source through the thermal fuse, wherein when the thermal fuse is not melted, the heating element can form a circuit with the power source, and when the thermal fuse is melted, the heating element and the power source form an open circuit.

2. The cover according to claim 1, characterized in that, The thermal fuse is disposed at the electrical terminal of the heating element, and the cover also includes an electrical connection assembly for connecting to the power source. The thermal fuse is electrically connected between the electrical terminal and the electrical connection assembly.

3. The cover according to claim 2, characterized in that, The cover also includes a protective sleeve. The protective sleeve covers the connection between the heating element and the thermal fuse, and / or the protective sleeve covers the connection between the electrical connection assembly and the thermal fuse.

4. The cover according to claim 3, characterized in that, The thermal fuse is located inside the protective sleeve.

5. The cover according to claim 1, characterized in that, The cover includes a reflective layer connected to the insulation board, and the heating element is located between the insulation board and the reflective layer.

6. The cover according to claim 5, characterized in that, The cover also includes an inner lining, and the insulation board is disposed in the inner lining and located between the inner lining and the reflective layer.

7. The cover according to claim 6, characterized in that, The cover also includes a cover plate disposed on the inner lining, and the reflective layer is located between the cover plate and the inner lining.

8. The cover according to claim 1, characterized in that, The cover includes an adhesive layer that connects the insulation board and the heating element.

9. The cover according to any one of claims 1-8, characterized in that, The melting temperature of the thermal fuse is 155–175°C.

10. A cooking utensil, characterized in that, The cooking appliance includes a lid according to any one of claims 1-9.

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