Grill plate for microwave oven

Abstract

This invention provides a microwave oven grill plate that effectively avoids tip discharge phenomena caused by direct contact between metal components, thereby improving safety during use. [Solution] The microwave oven grill plate includes a base plate 10, a capping portion 20, and an insulating ring 30. The base plate is made of metal, and a microwave-absorbing material layer is installed at the bottom, which is compositely connected to the base plate. The capping portion is made of metal and is placed over the base plate. The insulating ring is disposed around the periphery of the capping portion, separating the metal edge of the capping portion from the metal edge of the base plate. In this invention, the insulating ring is disposed around the periphery of the capping portion, separating the metal edge of the capping portion from the metal edge of the base plate.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and particularly to a grill plate for a microwave oven.

Background Art

[0002] As a common household kitchen appliance, a microwave oven realizes rapid heating by exciting and vibrating water molecules in food materials using electromagnetic waves generated by a magnetron. Due to the particularity of its heating principle, a microwave oven is usually only suitable for basic cooking operations such as heating and thawing, and cooking methods that require high-temperature dry heat conduction such as baking and roasting are difficult to achieve with a microwave oven. In daily life, when a user needs to perform baking cooking, in many cases, it is necessary to combine a direct-fire stove or an electromagnetic cooker with a dedicated cooking pot, and the advantages such as the rapidity and cleanliness of the microwave oven cannot be fully utilized.

[0003] In order to expand the cooking functions of a microwave oven, in the prior art, there has already appeared a solution to equip a microwave oven with baking cooking ability by converting electromagnetic waves into thermal energy using microwave-absorbing materials. However, there are still many drawbacks in conventional grill appliances for microwave ovens. That is, when using a pot body and a lid made of a metal material in a microwave oven cavity, if the metal members directly contact each other or the distance between them is too narrow, due to the action of the electromagnetic field, a tip discharge phenomenon, so-called "spark discharge", is extremely likely to occur. As a result, not only the internal components of the microwave oven are damaged, but also safety risks arise.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a grill plate for a microwave oven, which aims to solve the technical problem in the prior art that tip discharge easily occurs between metal members in a grill appliance for a microwave oven and the use safety is insufficient.

Means for Solving the Problems

[0005] To solve the above technical problems, the object of the present invention is realized by the following technical solution: A grill plate for a microwave oven is provided, comprising: a base plate which is made of metal and has a microwave-absorbing material layer installed at its bottom which is compositely connected to the base plate; a capping portion which is made of metal and covers the top of the base plate; and an insulating ring which is disposed around the periphery of the capping portion and separates the metal edge of the capping portion from the metal edge of the base plate.

[0006] Furthermore, the bottom of the base plate includes a bottom plane and an inclined surface, the bottom plane being located in the central region of the bottom of the base plate, and the inclined surface being located on both sides of the bottom of the base plate, with the inclined surface extending upward outward from both side edges of the bottom plane.

[0007] Furthermore, the microwave-absorbing material layer covers the entire bottom surface of the base plate, and the microwave-absorbing material layer is used to absorb electromagnetic waves emitted from the microwave oven and convert them into thermal energy to heat the base plate.

[0008] The heat insulating handle cover further includes a base plate on which metal handles are installed at both ends, the metal handles having mounting holes, the heat insulating handle cover includes a first end and a second end installed opposite each other, a housing cavity formed between the first end and the second end that conforms to the shape of the metal handle, a locking pin protruding from the first end toward the housing cavity, a locking hole provided at the second end that conforms to the locking pin, the heat insulating handle cover is disposed on the metal handle, and the locking pin penetrates the mounting hole and engages with the locking hole.

[0009] Furthermore, a handle made of silicone rubber is installed at the top of the capping portion.

[0010] Furthermore, a small number of ventilation holes are provided on the surface of the capping portion.

[0011] Furthermore, support legs are installed on the outer surface of the microwave-absorbing material layer, and these support legs are spaced apart along the circumferential direction of the base plate.

[0012] Furthermore, a positioning column is installed on the handle, a positioning hole corresponding to the positioning column is provided in the capping portion, and the positioning column is detachably connected to the positioning hole.

[0013] Furthermore, the locking hole is a partially removed type locking hole.

[0014] Furthermore, both the base plate and the capping portion are manufactured from stainless steel or an aluminum alloy. [Effects of the Invention]

[0015] This invention provides a microwave oven grill plate, comprising: a base plate made of metal, the bottom of which is fitted with a microwave-absorbing material layer that is compositely connected to the base plate; a capping portion made of metal that is fitted over the base plate; and an insulating ring disposed around the periphery of the capping portion, which separates the metal edge of the capping portion from the metal edge of the base plate. This invention effectively avoids tip discharge phenomena caused by direct contact between metal members by disposing the insulating ring around the periphery of the capping portion and separating the metal edge of the capping portion from the metal edge of the base plate, thereby improving the safety of the microwave oven grill plate during use. [Brief explanation of the drawing]

[0016] To more clearly explain the technical concepts of the embodiments of the present invention, the following briefly introduces the accompanying drawings that may be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these without expending any creative effort.

[0017] [Figure 1] This is a perspective view of a microwave oven grill plate according to one embodiment of the present invention. [Figure 2] Figure 1 is an exploded view of a microwave oven grill plate. [Figure 3] Figure 1 is a front view of a microwave oven grill plate. [Figure 4] Figure 1 is a plan view of a microwave oven grill plate. [Figure 5] Figure 4 is a cross-sectional view of AA in the microwave oven grill plate. [Figure 6] This is a partial cross-sectional view of a microwave oven grill plate according to another embodiment of the present invention. [Modes for carrying out the invention]

[0018] The following clearly and completely describes the technical concepts in the embodiments of the present invention, in conjunction with the accompanying drawings of the embodiments of the present invention. Clearly, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art without any creative effort based on the embodiments of the present invention are all within the scope of protection of the present invention.

[0019] When used herein and in the attached utility model claims, the terms “include” and “inclusive” should be understood to mean the presence of the described features, wholes, steps, operations, elements, and / or components, and not to exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or sets thereof.

[0020] Also, it should be understood that the terms used in the specification of the present invention are for the sole purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended utility model registration claims, the singular forms "a", "one", and "this" mean to include the plural form unless the context clearly indicates otherwise.

[0021] The term "and / or" used in the specification of the present invention and the appended utility model registration claims means any combination and all possible combinations of one or more of the relatedly listed items, and it should be further understood to include these combinations.

[0022] As shown in FIGS. 1 to 5, an embodiment of the present invention provides a grill plate for a microwave oven, including a base plate 10 made of metal and having a microwave absorbing material layer 11 compound-connected to the base plate 10 installed at the bottom, a capping part 20 made of metal and covering the upper part of the base plate 10, and a heat insulation ring 30 disposed at the periphery of the capping part 20 and isolating the metal edge of the capping part 20 from the metal edge of the base plate 10.

[0023] In this embodiment, the base plate 10 as a whole presents a groove structure, and a cooking cavity for placing food is formed inside it. The base plate 10 is integrally press-molded from a metal material and has good thermal conductivity. The outer surface of the bottom of the base plate 10 is compounded with a microwave absorption material layer 11 through a heat vulcanization process. The microwave absorption material layer 11 adheres closely to the metal surface of the base plate 10. When the microwave oven is operating, the microwave absorption material layer 11 absorbs the electromagnetic wave emitted from the magnetron and converts it into thermal energy, and by rapidly increasing the temperature of the base plate 10, the roasting of food can be realized. The capping part 20 as a whole presents a lid structure adapted to the opening shape of the base plate 10. When the capping part 20 is covered above the base plate 10, the two jointly define a relatively sealed cooking space, which is beneficial for heat concentration and uniform heating of food. The heat insulation ring 30 can be made of silicone rubber material, and its shape is adapted to the periphery of the capping part 20. After the heat insulation ring 30 is arranged on the periphery of the capping part 20, when the capping part 20 is covered on the base plate 10, the heat insulation ring 30 is located between the metal edge of the capping part 20 and the metal edge of the base plate 10, and completely isolates the two, effectively avoiding the tip discharge phenomenon caused by the direct contact or too narrow spacing of the two metal members in the microwave oven electromagnetic field environment, and ensuring the safety during the use of the grill plate for the microwave oven. At the same time, the heat insulation ring 30 and the capping part 20 are removably connected to facilitate daily cleaning and replacement.

[0024] In one embodiment, the bottom of the base plate 10 includes a bottom plane 12 and an inclined plane 13. The bottom plane 12 is located in the central region of the bottom of the base plate 10, and the inclined plane 13 is located on both sides of the bottom of the base plate 10. The inclined plane 13 extends upward from both side edges of the bottom plane 12 toward the outside.

[0025] In this embodiment, the lumen bottom surface of the base plate 10 is not entirely flat, but is jointly composed of a central bottom plane 12 and sloped surfaces 13 on both sides. The bottom plane 12 is a flat area that is placed horizontally and serves as the main cooking surface, allowing food to be heated uniformly within this area. The sloped surfaces 13 extend outward and diagonally upward along the length of the base plate 10 from both side edges of the bottom plane 12, forming a constant inclination angle with the bottom plane 12. Such a bottom surface configuration is particularly applicable to dishes that require sequentially rolling up egg mixtures, such as omelets. During cooking, the user can roll and fold the egg mixture from one end of the base plate 10 to the other using the guiding effect of the sloped surfaces 13, making the operation smoother and more convenient.

[0026] In one embodiment, the microwave-absorbing material layer 11 covers the entire bottom surface of the base plate 10, and the microwave-absorbing material layer 11 is used to absorb electromagnetic waves emitted from the microwave oven and convert them into thermal energy to heat the base plate.

[0027] In this embodiment, the microwave-absorbing material layer 11 completely covers the entire area of ​​the bottom outer surface of the base plate 10, including the bottom surface area corresponding to the bottom plane 12 and the bottom surface area corresponding to the slope 13. The microwave-absorbing material layer 11 is firmly bonded to the metal bottom surface of the base plate 10 by a thermal vulcanization process, making it resistant to detachment or delamination even with long-term use. When the microwave oven grill plate is placed in the microwave oven cavity and operates, the microwave oven's magnetron emits electromagnetic waves, and the microwave-absorbing material layer 11 efficiently absorbs the electromagnetic wave energy reaching the bottom of the base plate 10, converts it into thermal energy, conducts it to the metal body of the base plate 10, and uniformly heats the entire base plate 10. Because the microwave-absorbing material layer 11 covers the entire bottom surface of the base plate 10, heating of each area of ​​the base plate 10 is relatively uniform, avoiding problems of localized overheating or uneven heating, which is advantageous for improving the effectiveness of grilling.

[0028] In one embodiment, a heat-insulating handle cover 40 is further included, with metal handles 14 installed at both ends of the base plate 10, and mounting holes 141 are provided in the metal handles 14, and the heat-insulating handle cover 40 is disposed on the metal handles 14 via the mounting holes 141.

[0029] In this embodiment, both ends of the base plate 10 extend outward along their length to form metal handles 14, and the metal handles 14 and the base plate 10 are integrally molded to ensure reliable connection and overall structural strength. Mounting holes 141 are provided in each metal handle 14, and the mounting holes 141 penetrate through the thickness direction of the metal handle 14. The heat-insulating handle cover 40 is made of silicone rubber material and includes a first end 41 and a second end 42 which are installed opposite each other, with a housing cavity formed between the first end 41 and the second end 42 that conforms to the shape of the metal handle 14, with a locking pin 411 protruding from the first end 41 toward the housing cavity, and a locking hole 421 that fits the locking pin 411 provided in the second end 42, and the heat-insulating handle cover 40 is disposed on the metal handle 14, and the heat-insulating handle cover 40 is fixed to and covers the metal handle 14 by the locking pin 411 passing through the mounting hole 141 and engaging with the locking hole 421.

[0030] In this embodiment, the locking hole 421 is a partially cut-out type locking hole, that is, the locking hole 421 is designed as a blind via. Based on this design, the locking hole 421 and the locking pin 411 can be avoided from being exposed to the outside, resulting in a more aesthetically pleasing overall appearance, less accumulation of dirt, and easier cleaning.

[0031] After cooking is complete, the temperature of the base plate 10 and the metal handle 14 is still relatively high, allowing the user to safely remove the microwave grill plate from the microwave cavity by gripping the insulated handle cover 40. The silicone rubber material has good heat insulation and anti-slip properties, effectively preventing burns and ensuring stable gripping.

[0032] In one embodiment, a handle 21 made of silicone rubber is installed on the top of the capping portion 20.

[0033] In this embodiment, the handle 21 is installed in the central area of ​​the top surface of the capping part 20, facilitating the user's gripping and lifting operation when opening and closing the capping part 20. The handle 21 is made of silicone rubber, which has excellent high temperature resistance and heat insulation properties. After the microwave grill plate has finished heating in the microwave, the metal surface temperature of the capping part 20 is relatively high, allowing the user to lift the capping part 20 directly using the silicone rubber handle 21, eliminating the need for an insulated handle cover or other auxiliary tools, making the operation convenient, safe, and reliable. The handle 21 is provided with two through holes, allowing the user to insert their fingers into the holes and lift, improving stability and operability when lifting the capping part 20.

[0034] In one embodiment, a small number of ventilation holes 22 are provided on the surface of the capping portion 20.

[0035] In this embodiment, several ventilation holes 22 are provided on the side of the capping section 20, and each ventilation hole 22 is distributed at intervals along the circumferential direction of the capping section 20. During the baking process, steam and oil fumes are generated as the food is heated, and the ventilation holes 22 provide an outlet for these gases, maintaining the air pressure inside the cooking cavity in equilibrium with the outside air pressure, thus avoiding problems such as the capping section 20 being pushed up or the food being heated unevenly due to excessively high air pressure inside the cavity. At the same time, the size of the ventilation holes 22 is rationally designed to not only satisfy the need for exhaust but also to prevent excessive heat dissipation, ensuring that a sufficient temperature is maintained inside the cooking cavity to complete the baking operation.

[0036] In one embodiment, support legs 111 are installed on the outer surface of the microwave absorbing material layer 11, and the support legs 111 are installed at intervals along the circumferential direction of the base plate 10.

[0037] In this embodiment, the support legs 111 are installed on the surface of the microwave-absorbing material layer 11 facing the bottom surface of the microwave cavity, and the multiple support legs 111 are arranged at uniform intervals along the circumferential direction of the bottom of the base plate 10. When the microwave grill plate is placed on the turntable or bottom plate in the microwave cavity, the support legs 111 form a certain gap distance between the outer surface of the microwave-absorbing material layer 11 and the bottom surface of the microwave cavity, preventing the microwave-absorbing material layer 11 from directly contacting the turntable surface of the microwave oven. This gap is advantageous for electromagnetic waves to propagate and be absorbed sufficiently in the space below the microwave-absorbing material layer 11, improving the conversion efficiency of microwave energy, while the support legs 111 also serve as thermal insulation protection, preventing the high-temperature microwave-absorbing material layer 11 from directly contacting and damaging the turntable of the microwave oven.

[0038] In one embodiment, a positioning column 211 is installed on the handle 21, a positioning hole 23 corresponding to the positioning column 211 is provided in the capping portion 20, and the positioning column 211 is detachably connected to the positioning hole 23.

[0039] In this embodiment, a positioning column 211 is installed on the side of the handle 21 facing the capping portion 20 at the bottom, and the positioning column 211 protrudes downward from the bottom surface of the handle 21. A positioning hole 23 is provided on the top surface of the capping portion 20, which corresponds one-to-one with the position of the positioning column 211, and the positioning hole 23 penetrates the top surface of the capping portion 20. When installing, the positioning column 211 of the handle 21 is aligned with the positioning hole 23 on the capping portion 20 and inserted, forming a removable connection between the positioning column 211 and the positioning hole 23. With this connection method, the handle 21 can be securely fixed to the top surface of the capping portion 20 for daily use, and will not loosen or fall off during lifting operations. At the same time, when cleaning is necessary, the user can remove the handle 21 from the capping portion 20 and clean the silicone rubber handle 21 and the metal capping portion 20 respectively, which is hygienic and convenient.

[0040] In one embodiment, the heat-insulating handle cover 40 is connected to the metal handle 14 by a press-fit.

[0041] In this embodiment, the lumen dimension of the heat-insulating handle cover 40 is slightly smaller than the outer contour dimension of the metal handle 14, and when the heat-insulating handle cover 40 is installed on the metal handle 14, an interlocking fit is formed between them. Due to the elastic deformation capability of the silicone rubber material itself, the heat-insulating handle cover 40 adheres tightly to the outer surface of the metal handle 14 and can be securely fixed to the metal handle 14 by frictional force, so that it does not loosen, slip, or fall off due to vibration or gripping operation during use. The interlocking fit does not require separate fasteners or adhesives, has a simple and reliable structure, and at the same time makes it easy for the user to remove the heat-insulating handle cover 40 from the metal handle 14 and clean it individually when cleaning is required.

[0042] In one embodiment, both the base plate 10 and the capping portion 20 are made of stainless steel or an aluminum alloy.

[0043] In this embodiment, the metal material of the base plate 10 and the capping portion 20 is selected to be either stainless steel or aluminum alloy. Stainless steel has relatively high strength, good corrosion resistance and stable chemical properties, is less prone to deformation in high-temperature grilling environments, and does not release harmful substances, making it suitable for direct contact with food. Aluminum alloy has the advantages of being lightweight and having high thermal conductivity. By adopting a base plate 10 made of aluminum alloy, the thermal energy conducted from the microwave-absorbing material layer 11 can be distributed quickly and uniformly across the entire cooking surface, improving heating efficiency and grilling effect. At the same time, the relatively light overall weight makes it easy for the user to take it out and store it on a daily basis. Users can select a microwave grill plate made of stainless steel or aluminum alloy according to their actual usage needs.

[0044] In summary, the microwave oven grill plate provided in this application expands the range of microwave oven use by efficiently absorbing electromagnetic waves emitted from the microwave oven and converting them into thermal energy through the integration of a microwave-absorbing material layer at the bottom of the metal base plate. By placing an insulating ring around the periphery of the capping section, the metal edge of the capping section and the metal edge of the base plate are completely isolated, effectively avoiding the tip discharge phenomenon that occurs when metal parts come into direct contact or are too close together in the electromagnetic field environment of a microwave oven, thereby enhancing the safety of the product. The bottom of the base plate adopts a design that combines a bottom flat surface and slopes on both sides, making it particularly suitable for cooking operations that require rolling and folding, such as making omelets, and strengthening the functional adaptability of the grill plate to different cooking needs. The metal handles provided at both ends of the base plate are fitted with insulating handle covers made of silicone rubber, and an over-fitting method is used between them, ensuring secure fixation while also allowing for easy removal and cleaning, effectively preventing burns when the user handles a high-temperature appliance. A silicone rubber handle is provided at the top of the capping section, and a removable connection is achieved through positioning columns and positioning holes, allowing the user to safely open and close the lid, as well as easily remove and clean it. Ventilation holes provided on the sides of the capping section are advantageous for the discharge of gases during the cooking process and for maintaining the pressure balance within the cavity. Support legs provided on the outer surface of the microwave-absorbing material layer support the base plate by lifting it off the turntable surface of the microwave oven, contributing to improved electromagnetic wave absorption and conversion efficiency, and preventing the high-temperature material layer from directly contacting and damaging the turntable. Stainless steel or aluminum alloy material is selected for the base plate and capping section, achieving a balance of overall performance requirements such as corrosion resistance, thermal conductivity, and lightweight design. The overall structural design is rational, safe, reliable, and highly practical.

[0045] The above describes only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Within the technical scope disclosed by the present invention, a person skilled in the art can easily conceive of various equivalent modifications or substitutions, and these modifications or substitutions are included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims for utility model registration. [Explanation of Symbols]

[0046] 10...Base plate, 11...Microwave absorbing material layer, 111...Support leg, 12...Bottom surface, 13...Inclined surface, 14...Metal handle, 141...Mounting hole, 20...Capping part, 21...Handle, 211...Positioning column, 22...Ventilation hole, 23...Positioning hole, 30...Insulation ring, 40...Insulation handle cover, 41...First end, 411...Locking pin, 42...Second end, 421...Locking hole.

Claims

1. A grill plate for microwave ovens, A base plate, which is made of metal, and has a microwave-absorbing material layer installed at its bottom, which is compositely connected to the base plate, It is made of metal and has a capping portion that is placed over the base plate, A microwave oven grill plate characterized by including an insulating ring disposed around the periphery of the capping portion, which separates the metal edge of the capping portion from the metal edge of the base plate.

2. The bottom of the base plate includes a bottom plane and an inclined surface, wherein the bottom plane is located in the central region of the bottom of the base plate, the inclined surface is located on both sides of the bottom of the base plate, and the inclined surface extends upward outward from both side edges of the bottom plane, as described in claim 1.

3. The microwave-absorbing material layer covers the entire bottom surface of the base plate, and the microwave-absorbing material layer is used to absorb electromagnetic waves emitted from the microwave oven and convert them into thermal energy to heat the base plate, as described in claim 1.

4. The base plate further includes an insulated handle cover, and metal handles are installed at both ends of the base plate, with mounting holes provided in the metal handles. The heat-insulating handle cover includes a first end and a second end that are installed opposite each other, with a housing cavity formed between the first end and the second end that conforms to the shape of the metal handle, the first end having a locking pin protruding toward the housing cavity, and the second end having a locking hole that conforms to the locking pin. The microwave oven grill plate according to claim 1, characterized in that the heat-insulating handle cover is disposed on the metal handle, and the locking pin penetrates the mounting hole and engages with the locking hole.

5. The microwave oven grill plate according to claim 1, characterized in that a handle made of silicone rubber is installed on the top of the capping portion.

6. The microwave oven grill plate according to claim 1, characterized in that a few ventilation holes are provided on the surface of the capping portion.

7. The microwave oven grill plate according to claim 1, characterized in that support legs are provided on the outer surface of the microwave absorbing material layer, and the support legs are provided at intervals along the circumferential direction of the base plate.

8. The grill plate for a microwave oven according to claim 5, characterized in that a positioning column is installed on the handle, a positioning hole corresponding to the positioning column is provided in the capping portion, and the positioning column is detachably connected to the positioning hole.

9. The grill plate for microwave ovens according to claim 4, characterized in that the locking hole is a semi-perforated type locking hole.

10. The microwave oven grill plate according to claim 1, characterized in that both the base plate and the capping portion are made of stainless steel or an aluminum alloy.

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