CN106797682B

CN106797682B - Container for microwave oven

Info

Publication number: CN106797682B
Application number: CN201580048072.6A
Authority: CN
Inventors: 朴钟道
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-07-08
Filing date: 2015-03-12
Publication date: 2020-08-07
Anticipated expiration: 2035-03-12
Also published as: WO2016007202A3; KR101957065B1; CN106797682A; WO2016007202A2; KR20170047226A

Abstract

Some embodiments of the present invention provide a container for a microwave oven capable of heating different types of foods rapidly and uniformly. In some embodiments, the container comprises a metal body capable of holding food or beverages. The outside of the main body is coated with a heating glaze layer. In some embodiments, the container further comprises a heat-resistant outer shell for covering the heat generating layer. The container of some embodiments is a multi-layered structure having an inner shell and an outer shell, and the inner shell and the outer shell are connected to form a cavity therebetween.

Description

Container for microwave oven

Background

Microwave ovens are a very popular appliance that can be used in a variety of different locations. People can use it almost anywhere (e.g., at home, office, store, etc.). Microwave ovens are widely used because they can heat food and beverages conveniently and safely. Microwave ovens use electromagnetic radiation in the microwave spectrum to impact (board) food, causing polarized molecules (polarized molecules) in the food moisture to vibrate back and forth, thereby generating heat energy. This microwave cooking process is also known as dielectric heating (dielectrically cooking).

Although quite popular, microwave ovens, or more specifically microwave cooking, present a number of problems. For example, microwave cooking can result in food drying out, or heating only partially and unevenly. In addition, the cooking time may be very long, resulting in the food losing its original taste after being heated in the microwave oven. The main reason for these problems is that the microwave oven heats the food in a vibrating manner.

In addition, unlike glass, plastic and paper, since electromagnetic waves cannot pass through metal, it is recommended in general use to avoid placing a metal container in a microwave oven. This is one of the reasons why people cannot put a common thermos into a microwave oven. Further, it can also cause a concentrated electric field to be generated at an edge (edge) of the metal object due to vibration of the electromagnetic wave. If the edge is close to other metal objects, a problem of sparks between the two objects is caused due to the concentrated electric field.

Therefore, there is a need for a container for a microwave oven that can heat or cook different types of food quickly and uniformly. In addition, there is a need for a container for a microwave oven that can prolong the warm-keeping time of food like a thermos bottle.

Disclosure of Invention

The embodiments described in the present invention provide a container for a microwave oven capable of heating or cooking various foods including beverages rapidly and uniformly. In some embodiments, the container for a microwave oven of the present invention can greatly prolong the heat-retaining time of its contents. The container for a microwave oven of the present invention can be a cooking container such as a pan, a baking utensil (baking ware), etc. Also, the container of the present invention can be a cup or mug (e.g., a travel mug, coffee mug, etc.).

In some embodiments, a container for a microwave oven has a metal body capable of containing food or beverage. The main body has a bottom and one or more sidewalls extending upwardly from the bottom to form a receptacle. The exterior (e.g., outer surface) of the body is coated (e.g., completely) with a heat-generating glaze layer. In some embodiments, the container further includes a heat-resistant outer layer (e.g., a thermal insulating material) or covering that covers the heat-generating layer.

The heating glaze in some embodiments absorbs electromagnetic waves emitted from a magnetron of a microwave oven and converts them into thermal energy by vibration. Subsequently, the thermal energy is transferred to the metal body, thereby uniformly heating the contents of the container at all sides of the container including the side walls and the bottom surface. In some embodiments, the heat-generating glaze is an exothermic (exothermic) enamel or ceramic glaze with manganese-zinc ferrite and/or ferrosilicon. In some embodiments, the exothermic ceramic glaze is a mixed metal alloy powder compound comprising ferrite, silicon (Si), and aluminum (Al).

As described above, the container of some embodiments includes a heat-resistant outer layer (e.g., a thermal insulation layer) or cover that covers the heat-generating layer. In some embodiments, the heat resistant outer layer has multiple uses. The heat resistant outer layer is capable of thermally insulating the container by capturing heat. The container in the heated state can be handled safely by the heat-resistant outer layer. The heat resistant outer layers of the different embodiments are of different materials. In some embodiments, the heat resistant layer is comprised of polystyrene, such as Syndiotactic Polystyrene (SPS). In some embodiments, the heat resistant layer is composed of a polymer such as polyphenylene sulfide (PPS). The polystyrene or polymer can withstand temperatures of 260 ℃ and above, and in some embodiments is used in a container. The PPS can be an exothermic PPS including exothermic particles (exotic particles).

In order to maintain the temperature for a long time, the container for the microwave oven of some embodiments has a multi-layered (e.g., double-layered) container wall structure having an inner shell and an outer shell. In some embodiments, the inner shell is configured to form a receptacle. The receiving portion has a bottom surface extending upward to form a container wall of the inner housing and stopping at an upper end of the inner housing. The outer shell is provided for substantially enclosing the inner shell and has a bottom surface that extends upwardly to form a wall of the outer shell and terminates at an upper end of the outer shell.

A space (e.g., cavity) is formed between the inner case and the outer case to accommodate a heat transfer medium or a heat insulating medium. Specifically, the inner space is formed between an inner case and an outer case of a container for a microwave oven. In some embodiments, the interior space of the container is at least partially filled with air (e.g., atmospheric air). In some embodiments, the interior space is at least partially filled with an oily medium, such as silicone oil. In some embodiments, the interior space is at least partially filled with carbon fibers. In some embodiments, the interior space includes a thermally conductive pad or a thermally conductive gel. In some embodiments, the interior space includes a silicone material mixed with an aluminum oxide compound. In some embodiments, the interior space includes silicone rubber with ferrite particles, such as manganese zinc (MnZn) ferrite particles.

In some embodiments, the outer surface of the housing is coated with the above-described heat-generating glaze, thereby improving the heat release. While using the heat-generating glaze, or as an alternative, the container for a microwave oven of some embodiments includes a heat-releasing plate (exotic plate). Similar to the heat emitting glaze, the heat emitting plate converts microwaves into heat energy. The heat releasing plate can be attached to the bottom of the container for the microwave oven. In some embodiments, the heat releasing plate is disposed between the inner case and the bottom of the outer case and is exposed along the bottom of the outer case, thereby absorbing the microwaves and converting the microwaves into heat. In some embodiments, the heat release plate is made of a far infrared heating material. The heat release plate of some embodiments is at least partially composed of ceramic. An example of a ceramic heat-emitting plate is the pyrogen (pyrogen).

Thus, the container of some embodiments has a multi-layered container wall (e.g., double-layered) structure, and the far infrared heating material is inserted into the bottom. In some embodiments, the container for a microwave oven is particularly suitable for a mug for holding a beverage and capable of being heated by a microwave oven. In some embodiments, the container for a microwave oven can keep the contents warm for a certain period of time like a thermos bottle. And the container can be used for a microwave oven unlike a thermos bottle. By the double-wall structure, the container for a microwave oven of some embodiments can prevent a sharp rise in temperature or uneven heating in the microwave oven (e.g., in a specific region), and thus, heat can be uniformly distributed to the contents of the container for a microwave oven.

As above, in some embodiments, the bottom of the outer shell has an opening, and a heating element (e.g., an exothermic ceramic plate) is inserted or disposed between the inner shell and the outer shell such that the heating element can be exposed through the opening. When the microwave oven is operated, the microwaves heat the heating element to a temperature of 250 ℃ (550 ° F) or more in only 1-2 minutes, after which a hot gas blanket is formed between the inner and outer shell container walls. Thereby, the temperature in the container for the microwave oven is slowly and stably increased. Even if the heating of the microwave oven is stopped, the heat transfer medium (e.g., hot gas layer, silicone oil) and the heated heating material can function as a heat source for the contents of the container for the microwave oven, thereby prolonging the time for which the high temperature is maintained. The present invention is particularly excellent in uniformly and comprehensively distributing heat to the entire contents of a container for a microwave oven. The conventional container for microwave ovens, such as a pot or a cup for microwave ovens, does not have the above-mentioned advantages.

Generally, it takes a long time to cook with a microwave oven, and the food loses its original taste during the microwave cooking. However, the container for a microwave oven of some embodiments can maintain the taste of the food by preventing the microwave from drying the food. The container of some embodiments is particularly suitable for use with travel mugs. During travel or commute, the coffee or tea in the cup quickly cools, however, the travel mug of the invention can be heated by a microwave oven, thereby heating the coffee to a desired temperature between 80-85 ℃ which is most suitable for drinking. In addition, the container for the microwave oven can realize long heat preservation like a thermos bottle due to the double-layer container wall structure.

In some embodiments, the inner surface of the inner casing of the container for the microwave oven is coated with electrically conductive copper or silver, so that heat can be rapidly transferred to the contents of the container for the microwave oven. Also, in some embodiments, the heat transfer medium (e.g., air, silicone oil) between the inner and outer shells can be kept warm for a long period of time. Thus, the container for a microwave oven of some embodiments can function as a slow cooker, a smoldering pot, or even a vacuum flask.

In some embodiments, the container is a multi-purpose container, not limited to a microwave oven but capable of heating the contents by different means. In some embodiments, the multipurpose container can heat the contents using a gas stove, an electric stove, or an induction cooker. That is, the container for a microwave oven of some embodiments can be heated by a microwave oven, a range, and an induction cooker as well.

Thus, some embodiments provide a container for a microwave oven capable of heating or cooking different foods rapidly and uniformly. Some embodiments of a container have an inner shell, an outer shell, and a heating element (heating element) located between the bottom of the inner and outer shells. The heating element is capable of heating to a temperature of 250 ℃ (550 ° F) or above in only 1-2 minutes, thereby forming a thermally conductive layer (e.g., a hot gas layer) between the inner shell and the container wall of the outer shell. The heat conductive layer provides heat energy to the contents of the container for the microwave oven, and the heated heating element is capable of directly transferring the heat in the heating element to the contents of the container for the microwave oven through the bottom of the inner case. The bottom of the housing is open for microwaves to heat the bottom of the heating element. In some embodiments, the heating element is made of far infrared ceramic.

In some embodiments, a container for a microwave oven includes an inner case, an outer case, and a heating element attached to a bottom of the outer case. The heating element is covered with ferrite or ferrite rubber, and a set of vent holes is formed on the bottom surface of the ferrite. Further, an opening is formed in the bottom of the housing. In some embodiments, a container for a microwave oven includes an inner case, an outer case, and a heating element. Here, the heating element is covered by an upper case and a lower case, or is accommodated in a separate case (e.g., a cover case). The lower shell or housing is open to expose the bottom of the heating element. The outer case, the lower case, and the upper case are welded together by a specific welding technique (e.g., argon arc welding).

The foregoing is a brief description of some embodiments of the invention and is not an introduction or generalization of the entire content of the invention. In the following detailed description and the accompanying drawings, embodiments described in the above-described means for solving the problems and other embodiments will be described in more detail. Therefore, in order to understand all the embodiments described in the present specification, it is necessary to fully study the technical solutions to the problems, the detailed description, and the drawings. The claims of the present invention can be implemented in other embodiments without departing from the gist of the present invention. Therefore, the claims of the present invention are not limited to the details of the above-described embodiments, the detailed description, and the drawings, but are defined by the scope of the claims.

Drawings

The novel features believed characteristic of the invention are set forth in the appended claims. However, for the purpose of illustration, some embodiments of the invention are illustrated by the following figures.

Fig. 1 is a sectional view of a cooking container according to some embodiments of the present invention.

Fig. 2 is a drawing showing the bottom of the cooking container of fig. 1 in more detail.

Fig. 3 is a sectional view of another cooking container according to some embodiments of the present invention.

Fig. 4 is a drawing showing the bottom of the cooking container of fig. 3 in more detail.

Fig. 5 is a sectional view of another cooking container according to some embodiments of the present invention.

Fig. 6 is a sectional view of the bottom of the cooking container of fig. 5.

Fig. 7 is a bottom view showing the cooking container of fig. 5.

Fig. 8 is a sectional view of still another cooking container of some embodiments.

Fig. 9 is a cross-sectional view of a handle of a cooking vessel of some embodiments.

Fig. 10 is a cross-sectional view of a pressure relief valve of some embodiments.

Fig. 11 is a perspective view of a valve member of a pressure relief valve of some embodiments.

Fig. 12 is a sectional view of still another cooking container of some embodiments.

Fig. 13 is a drawing showing an example of the multipurpose cooking appliance of some embodiments.

Fig. 14 is an outer bottom view of the multi-purpose cooking appliance of fig. 13.

Fig. 15 is a drawing showing still another example of a container for a microwave oven according to some embodiments.

Fig. 16 is a drawing showing in more detail the layers of the main body of the container for a microwave oven of fig. 15.

Fig. 17 is a cross-sectional view of a handle of a container lid of some embodiments.

Fig. 18 is a bottom view of a handle of some embodiments.

FIG. 19 is a drawing showing a container lid handle with a pressure relief switch.

Fig. 20 is a plan view of a container lid handle of some embodiments.

Fig. 21 is a cross-sectional view of some embodiments of a container lid with a silicone member.

Fig. 22 is a drawing showing an example of a container for a microwave oven according to some embodiments of the present invention.

Fig. 23 is a cross-sectional view of the container of fig. 22.

Fig. 24 is a drawing showing still another example of a container for a microwave oven according to some embodiments of the present invention.

Fig. 25 is a cross-sectional view of the container of fig. 24.

Fig. 26 is a drawing showing still another example of a container for a microwave oven according to some embodiments of the present invention.

Fig. 27 is a cross-sectional view of the container of fig. 26.

Fig. 28 is a drawing showing another example of a container for a microwave oven according to some embodiments of the present invention.

Fig. 29 is a drawing showing another example of a container for a microwave oven according to some embodiments of the present invention.

Fig. 30 is a drawing showing still another example of a container for a microwave oven according to some embodiments of the present invention.

Fig. 31 is a graph showing the test results of the thermal conductivity of the container for the microwave oven of fig. 30.

Fig. 32 is another graph showing the test results of the thermal conductivity of the container for the microwave oven of fig. 30.

Detailed Description

In the following detailed description of the present invention, numerous details, examples, and embodiments of the invention are set forth and described. However, it will be apparent to one of ordinary skill in the art that the present invention is not limited to the embodiments illustrated, and that the present invention may be practiced without the specific details or with examples.

Some embodiments provide a container for a microwave oven capable of heating or cooking various foods including beverages rapidly and uniformly. In some embodiments, the container for a microwave oven can greatly prolong the insulation time of its contents like a thermos bottle. The container for the microwave oven can be a cooking container of a pan, a pot, a bakery, etc. The container can be a cup or mug (e.g., a travel mug, coffee cup, etc.). For simplicity of description, the microwave oven container (microwaveable vessel) can also be referred to herein as a cooking vessel.

Fig. 1 is a cross-sectional view of some embodiments of a cooking vessel. The cooking vessel 100 is a pot, pan, baking utensil, mug or travel mug that can be heated by a microwave oven, range and/or induction cooker. In some embodiments, the cooking vessel 100 of fig. 1 is particularly suitable for use with microwave heatable mugs, whereas the cooking vessel 100 of fig. 5 is suitable for use with microwave ovens, stove tops, and induction cookers. Often, mugs are used to consume (e.g., drink) hot beverages such as coffee, tea, hot chocolate, and soup.

Some embodiments of cooking vessel 100, as shown in fig. 1, have an inner shell (shell)105 and an outer shell 110. The inner casing 105 is formed with a container (container) extending upward to form a container wall, and the container wall is stopped at the uppermost portion of the inner casing. The outer shell 110, which substantially surrounds the inner shell 105, extends upwardly to form the wall of the outer shell that terminates at the uppermost portion of the outer shell.

In some embodiments, the inner shell 105 and the outer shell 110 are made of stainless steel. In some embodiments, the shell is made of a certain type of stainless steel (e.g., AISI 304). In some embodiments, stainless steel is used in place of non-stick coating metal because the non-stick coating particles of non-stick coated metal contaminate food when heated to a certain critical temperature. At the bottom of the housing (bottom) (e.g., between the inner housing 105 and the outer housing 110), there is a heating element 115 that converts microwaves into heat energy. In some embodiments, the container 100 includes a pressure relief feature for preventing the inner shell 105 and the outer shell 110 from separating as the air between them expands. Hereinafter, some examples of the pressure-releasing member will be described with reference to fig. 9 to 11.

Some embodiments of heating element 115 can be heated by a microwave oven to a temperature of 250 ℃ (550 ° F) or above in only a few minutes (e.g., 1-2 minutes). Thus, in some embodiments, a hot gas blanket is formed between the inner shell 105 and the vessel wall of the outer shell 110. The hot gas layer provides thermal energy (e.g., a durable source of thermal energy) to the contents of the cooking vessel 100. In some embodiments, the interior space is at least partially filled with an insulating medium, such as silicone oil. In some embodiments, the interior space is at least partially filled with carbon fibers. In some embodiments, the interior space includes a thermally conductive pad or a thermally conductive gel. In some embodiments, the interior space includes a silicone material mixed with an aluminum oxide compound. In some embodiments, the interior space includes silicone rubber with ferrite particles, such as manganese zinc (MnZn) ferrite particles.

In some embodiments, the heating element 115 is attached to or in contact with the bottom of the inner shell 105, thereby transferring heat of the heating element 115 directly from the bottom to the contents of the cooking vessel 100. In the example of fig. 1, the bottom of the case 110 has an open portion, so that the bottom of the heating element 115 is exposed to allow the microwave oven to heat the heating element 115. This structure prevents the electrostatic phenomenon and promotes efficient heat transfer to the heating element 115.

The heating element 115 can be constructed of a material that can be rapidly heated by a microwave oven. In some embodiments, heating element 115 is an exothermic plate (exothermic plate) capable of absorbing electromagnetic radiation and generating heat. In some embodiments, the heating element comprises a ceramic material. In some embodiments, heating element 115 is made of far infrared ceramics. In some embodiments, the heating element 115 comprises conductive graphite and/or conductive carbon. As shown, some embodiments of heating element 115 are in contact with the bottom of inner shell 105.

The heating element 115 can function as a thermal blanket. In addition to generating heat energy and transferring the energy to the cooking container 100, the heating element 115 can prevent rapid heat loss of the cooking container 100. After the heating, even if the microwave oven is turned off, the heat can be maintained for a long time by the heating element 115.

In some embodiments, the outer surface of the outer shell 110 can be coated with an exothermic enamel (exoticceramic glaze) or exothermic ceramic glaze. The exothermic enamel or ceramic glaze can include manganese-zinc ferrite and silicon iron to assist penetration of microwave energy into the interior. In some embodiments, a mixture of manganese-zinc ferrite and silicon iron (ferrosilicon) is spray-coated on the outer surface of the outer shell 110, thereby improving the thermal conductivity of the outer surface of the outer shell 110. In some embodiments, the exothermic ceramic glaze is a mixed metal alloy powder compound comprising ferrite, silicon (Si), and aluminum (Al).

In order to prevent the loss of heat stored in the heating element 115, a heat resistant member 120 is covered at the bottom and lower portion of the container wall. The heat resistant member 120 can be made of heat resistant silicone. In some embodiments, the container 100 of fig. 1 is suitable for use with only a microwave oven. This is because the heat-resistant member 120 covers the bottom of the container. Hereinafter, examples of some multipurpose containers capable of heating contents on various appliances (e.g., microwave oven, induction cooker, cooking range, etc.) will be described with reference to fig. 5, 6, 13 and 14. Instead of a heat resistant piece, some embodiments of the cooking vessel are at least partially covered with a different material such as Syndiotactic Polystyrene (SPS), polyphenylene sulfide (PPS), or some other heat resistant composition or material. To improve the exothermicity (exothermic property) of the container, the PPS of some embodiments includes exothermic particles (exothermic particles).

As shown in fig. 1, a vacuum 130, which serves as thermal insulation, exists between the heating element 115 and the bottom of the heat resistant silicone 120. The incubation medium (e.g., silicone oil) can extend the incubation time (e.g., 2 to 3 hours) after being heated. The heating element 115 can be raised or supported by the support 205. In some embodiments, the support 205 is formed at the bottom of the housing 110. The vacuum 130 can be formed in the area formed by the heating element 115, the support 205 (shown in figure 2), and the heat resistant silicone 120.

In some embodiments, the two housings are welded together. In some embodiments, the two housings are welded together using more than one welding technique. In some embodiments, multiple welding techniques are used to completely seal the entire space between the tops (e.g., the upper edges of the inner and outer shells) and prevent leakage of the insulating medium (e.g., hot gas, silicone oil). In some embodiments, the welding is accomplished by first welding the top ends of the inner and

outer shells

105, 110 seamlessly (seamlesswelding), and then argon welding the ends (argon arc welding). This welded structure prevents separation or explosion at the weld of the inner and

outer shells

105 and 110. Furthermore, laser welding can be used instead of seam-less welding. The inner shell 105 and the outer shell 110 are welded by a certain millimeter (mm) by seamless welding, laser welding, and/or argon arc welding. For example, 3mm of the top edges (e.g., all edges) of two shells can be welded together by one or more of the different welding techniques above.

The cooking container 100 of some embodiments includes a container cover 150. In some embodiments, the container lid is made of metal (e.g., stainless steel). The metal cover is a very important constituent element, which can reflect the microwave of the magnetron to prevent the microwave from being absorbed by the contents of the container. In some embodiments, the metal lid or container includes a component (e.g., a silicone ring, gasket) that prevents arcing (e.g., sparks occurring between the lid edge and the container body). In some embodiments, the container lid includes a silicone ring to adequately seal the container when water in the cavity boils, thereby preventing heat loss. The inside of the inner shell 105 can be formed with a coating 140 (e.g., copper, silver, and/or some other material) for quickly dissipating heat.

In some embodiments, the cooking vessel is capable of visually indicating the temperature of the contents. In some embodiments, a thermo-chromic paint (thermo-chromic paint) or a temperature indicator (indicator) capable of withstanding a high temperature of the cooking container 100 is coated or painted on at least a portion of an outer side of the outer case 110. When the temperature of the cooking container is increased by heating, the thermochromic paint undergoes one or more different color changes in appearance. The thermochromic paint recovers more than one original color as the container is cooled.

In this way, the temperature indicator 145 that changes color with temperature can indicate the internal temperature of the cooking container 100. Hereinafter, another example of the temperature indicator will be explained with reference to fig. 12. Different embodiments provide different visual indicators. For example, some embodiments of the container lid have a temperature indicator (e.g., a thermometer). An example of such a visual indicator will be described with reference to fig. 20.

Fig. 2 is a drawing showing the bottom of the cooking container of fig. 1 in more detail. The bottom supporter 135 is formed at the bottom of the heat-resistant silicone 120 to support the cooking container 100, and the bottom supporter 135 is formed with the vent 125 to prevent the bottom surface of the cooking container from being deformed. If the vent hole 125 is not present, it is deformed due to high heat generated in the bottom of the cooking container 100. As shown in fig. 2, the heating element 115 can be supported or elevated by a plurality of supports 205. In some embodiments, the support 205 is formed at the bottom of the housing 110.

In some embodiments, the vacuum 130 is formed within the area surrounded by the heating element 115, the support 205, and the heat resistant silicone 120. As mentioned above, the vacuum provides additional thermal insulation along the bottom of the cooking vessel.

Fig. 3 is a sectional view of a cooking container according to some embodiments of the present invention. The container 100 has an inner shell 105 and an outer shell 110 similar to those of fig. 1. The inner shell and the upper end of the outer shell are welded together in a certain way (for example, seamless welding and argon arc welding, seamless welding and laser welding, etc.). The container can include a container lid 150, and the inner walls of the container (e.g., copper, silver, etc.) can be coated with a coating. Although not shown, the container 100 may also include a temperature indicator, or be at least partially coated with a thermochromic paint. The container 100 can also include a pressure relief structure or valve (e.g., a silicone valve) to prevent separation of the inner and outer shells. For example, a pressure relief valve can be mounted on the side of the outer shell to relieve excess pressure build-up in the cavity between the inner and outer shells when the container is heated. Pressure is generated by the expansion of the moisture and/or insulating medium in the surrounding atmosphere when the container is heated. For example, when submerged in water (assuming cleaning or placement in a wet place), water and/or moisture can flow into or concentrate in the space inside the container stacked in two layers. When the double-layered cooking container is heated, moisture in the inner space is converted into a gas state, i.e., steam, and finally, liquid (or moisture) is converted into steam or a gas state to cause an increase in volume. The pressure relief valve thus provides a means for venting steam to reduce volume and reduce stress (pressure) on the inner and outer shells of the vessel.

Unlike fig. 1, the heating element 115 in the example of fig. 3 is not placed between the outer bottom surface of the inner casing 105 and the inner bottom surface of the outer casing 110, but is attached or fixed to the outside of the bottom of the outer casing 110. In some embodiments, heating element 115 provides for heating of air between inner housing 105 and outer housing 110. In some embodiments, heating element 115 is made of the same or similar materials as described in fig. 1.

Fig. 4 is a drawing showing the bottom of the cooking container of fig. 3 in more detail. In this example, the cooking vessel has a plurality of heating elements. In particular, the heating element 115 is covered by another heating element 405, for example ferrite or ferrite rubber. The external heating element 405 not only provides an additional heat source, but also can cover the internal heating element 115 to further thermally insulate the bottom of the container. When the bottom of the container is covered with ferrite rubber, the container can be applied only to a microwave oven.

Also, a bottom support 415 can be formed at the bottom of the heating element 405. Further, a plurality of sets of vent holes 410 are formed on the bottom surface of the ferrite 405. In some embodiments, the bottom of the housing 110 is formed with an open area 420 (e.g., a circular opening). In order to prevent the heat preservation medium from leaking, the bottom of the inner shell and the bottom of the outer shell can be welded. In the example of fig. 4, the inner shell 105 is welded integrally with the bottom of the outer shell 110 by argon arc welding or laser welding. However, in some embodiments, a plurality of different welding techniques can be combined to perform the welding.

The outer surface of the outer case 110 can be coated with exothermic enamel or exothermic ceramic glaze. The exothermic enamel or ceramic glaze can include manganese-zinc ferrite with silicon iron to assist penetration of microwave energy into the interior. In some embodiments, a mixture of manganese-zinc ferrite and silicon iron is spray-coated on the outer surface of the outer shell 110, thereby improving the thermal conductivity of the outer surface of the outer shell 110. In some embodiments, the exothermic ceramic glaze is a mixed compound (e.g., a mixed compound of metal alloy powders) including ferrite, silicon (Si), and aluminum (Al).

Fig. 5 is a sectional view of a cooking container according to some embodiments of the present invention. Similar to fig. 1 and 3, the cooking container 100 includes an inner casing 105 and an outer casing 110. An inner shell 105, which forms a receptacle, extends with its bottom upwards to form the wall of the inner shell, which wall stops at the upper end of the inner shell. An outer shell 110, a vessel wall for substantially enclosing the inner shell 105, having a vessel wall terminating at an upper end of the outer shell. The inner wall of the inner shell is coated with a coating (e.g., copper or silver). The upper ends of the inner and outer shells can be welded together by one or more different welding techniques, such as, for example, seamless welding and argon arc welding, or seamless welding and laser welding.

Unlike fig. 1 and 3, the internal space between the inner shell 105 and the outer shell 110 is at least partially filled with a thermal insulation medium. For example, the cavity between the two housings can include silicone oil 505. The silicone oil can improve the thermal insulation performance of the cooking container 100. For example, silicone oils that are heated in a microwave oven can extend the incubation time (e.g., 2 to 3 hours or more). In some embodiments, the interior space is at least partially filled with carbon fibers. In some embodiments, the interior space includes a thermally conductive pad or a thermally conductive gel. The interior space includes an organic material mixed with an alumina compound. In some embodiments, the interior space includes silicone rubber with ferrite particles, such as manganese zinc (MnZn) ferrite particles.

The vessel includes an automatic pressure relief valve 510 for relieving or venting the high pressure created by heating the insulating medium. Similarly, there is air that expands during heating, and therefore the pressure relief valve 510 prevents the two shells from separating if the thermal insulation medium in the air layer expands during heating of the container.

Fig. 6 is a sectional view of the bottom of the cooking container of fig. 5. In some embodiments, the container includes a plug-in cap (cap insert)605 for surrounding the heating element 115. The insert cap can be fixed or welded to the bottom of the inner and/or outer shell. In some embodiments, the plug-in cap is a single metal block for housing the heating element 115. Alternatively, the metal can be or include a ferromagnetic metal having magnetic properties. The ferromagnetic metal enables the container to heat food through an induction cooker. The metal and heating element can also be heated by a gas furnace or an electric furnace. In some embodiments, the insert cap includes an upper shell and a lower shell for receiving the heating element.

In some embodiments, the plug-in cap is made of stainless steel. In some embodiments, the insert cap is made of a grade of stainless steel. For example, the insert cap can be made of grade 430 stainless steel, which is magnetic and is known for formability and corrosion resistance. Thus, the container shown in fig. 5 and 6 is a multipurpose container, and can be used by various appliances including a microwave oven, a cooking range, an induction cooker, and the like.

The insert cap or housing can be made of stainless steel. In some embodiments, the insert cap is made of a grade of stainless steel. For example, the insert cap can be made of ANSI430 grade stainless steel, which is well known for formability and corrosion resistance. Since the insert-type cap is made of stainless steel, the cooking vessel 100 can be heated by a range (gas or electric range) or an induction cooker. In some embodiments, the plug-in cap 605 is attached to or contacts the bottom of the inner housing 105. In some embodiments where the insert cap has a top shell and a bottom shell, the bottom shell is configured to support the heat spreader, and the top shell is configured to cover the base plate.

In some embodiments, the plug-in cap has an opening for exposing the bottom of the heating element 115. In some embodiments, the housing (e.g., a housing cover) includes a plurality of supports 615 for raising the cooking vessel. In some embodiments, the support 615 is formed or attached to the insert cap. If used primarily on an induction cooker, the housing preferably does not include any supports.

In some embodiments, the housing 110 is welded to the plug-in cap 605 by one or more different welding techniques. In some embodiments, the welding is integrated by seamless welding, argon arc welding, and/or laser welding. As shown in fig. 5, the bottom or bottom edge of the outer shell is welded to the cover shell. Thereby, the heat transfer medium (e.g., silicone oil 595) is prevented from leaking from the bottom of the container 100.

In some embodiments, the outer surface of outer shell 110 can be coated with an exothermic enamel or an exothermic ceramic glaze. The exothermic enamel or ceramic glaze can include manganese-zinc ferrite with silicon iron to assist penetration of microwave energy into the interior. In some embodiments, a mixture of manganese-zinc ferrite and silicon-iron is spray-coated on the outer surface of the outer shell 110, thereby improving the thermal conductivity of the outer surface of the outer shell 110. In some embodiments, the exothermic ceramic glaze is a mixed metal alloy powder compound comprising ferrite, silicon (Si), and aluminum (Al).

Fig. 7 is a bottom view showing the cooking container of fig. 5. The bottom of the heating element 115 is exposed through an opening of an insert cap (e.g., circular). In particular, the heating element is exposed through the bottom of the plug-in cap. As noted above, some embodiments of the plug-in cap are made from certain grades of stainless steel. For example, the plug-in cap can be made of grade 430 stainless steel with magnetic properties. Stainless steels of this grade are well known for their formability and corrosion resistance.

Fig. 8 is a sectional view of still another cooking container of some embodiments. Here, the cooking container 100 is a mug (e.g., coffee cup). In some embodiments, the mug is shaped or configured such that a lower portion thereof is capable of being placed into the cup holder. For example, the lower portion of the mug 100 has a smaller radius or circumference than the upper portion. The upper portion of the mug is wider than the lower portion. Because the radius of the lower part is smaller, the mug can be put into the cup stand.

As shown in fig. 8, the mug 100 includes a heating element 405 and a handle. Different embodiments can use more than one different heating element. As described above, the cooking container of some embodiments includes a heat release plate that converts microwave radiation into thermal energy. In some embodiments, the heat release plate is made of a far infrared heating material. The heat release plate of some embodiments is at least partially composed of ceramic. An example of a ceramic heat-emitting plate is known as a pyrogen (pyrogen). In the example of fig. 8, the mug 100 has a block of ferrite rubber 405. Ferrite rubber essentially comprises a ferrite composite material, thereby absorbing microwave radiation and generating heat. In some embodiments, the ferrite rubber is adhered (e.g., glued) to the outer surface of the bottom of the mug. In the above, a similar ferrite rubber is explained with reference to fig. 4.

Similar to some of the examples above, the mug 100 of fig. 8 includes an inner shell 105 and an outer shell 110. In some embodiments, one or both housings are made of stainless steel (e.g., 18/10, respectively) that includes amounts of chromium and nickel. As shown, the inner and outer shells form an interior space that is at least partially filled with a heat transfer medium. In some embodiments, the heat transfer medium includes air and/or silicone oil 505. In some embodiments, the interior space is at least partially filled with carbon fibers. In some embodiments, the interior space includes a thermally conductive pad or a thermally conductive gel. In some embodiments, the interior space includes a silicone material mixed with an aluminum oxide compound. In some embodiments, the interior space includes silicone rubber with ferrite particles, such as manganese zinc (MnZn) ferrite particles.

In some embodiments, the two housings are welded together. In some embodiments, the two housings are welded together using more than one welding technique. The open space between the inner and outer casings at their upper portions (e.g., the upper end edges of the inner and outer casings) is completely sealed by using various welding techniques, and the leakage of a heat transfer medium (e.g., hot gas) is prevented. In some embodiments, the upper ends of the inner and

outer shells

105, 110 are first welded seamlessly, and then the ends are welded by argon arc welding. This welded structure prevents separation or explosion at the weld of the inner and

outer shells

105 and 110. Furthermore, laser welding can be used instead of seam-less welding.

As shown in fig. 8, the container wall between the inner shell 105 and the outer shell 110 is at least partially filled with silicone oil 505 or carbon fibers. Thereby, the heat insulating performance of the cooking container can be improved. For example, silicone oils can extend the incubation time (e.g., 2 to 3 hours) after being heated. The vessel includes an automatic pressure relief valve 510 for relieving or venting the high pressure created by the heated heat transfer medium. Also, since there is an air layer that expands during heating, the relief valve 510 can prevent the inner casing 105 from being separated from the outer casing 110 when the heat transfer medium and/or the air layer expands during heating of the container.

In some embodiments, the container 100 includes a handle 805 that conceals a pressure relief valve. Fig. 9 is a cross-sectional view of a handle 805 of a cooking vessel of some embodiments. In some embodiments, the handle is mounted to an outer circumference of the receiving portion of the mug. In some embodiments, a discharge hole is formed at a proper position on a side of the handle. In some embodiments, the handle is made of a silicone material that prevents excessive heating and serves a slip-resistant function. Handle 805 has an interior space 905 or area for receiving a pressure relief valve. In some embodiments, the handle has a drain hole formed in a suitable location (e.g., the side of the handle). Formed in the interior space 905 is a bracket 910 or housing that holds the pressure relief valve 510 in place. The bracket 910 is attached to the handle 805 by screws 915. In some embodiments, the stent is made of metal (e.g., stainless steel).

Fig. 10 is a cross-sectional view of a pressure relief valve of some embodiments. As shown, pressure relief device 510 has a spring housing 1006 and is in contact with container 1001 (e.g., housing) through a securing hole 1010. Spring housing 1006 is attached to the housing of case 1001. The spring housing is provided with a spring 1020 that effects retraction based on the pressure exerted by the interior chamber of the container. The pressure relief valve also includes a valve head 1008 for sealing the interior space. The valve head 1008 is pushed to the rear by the elastic force of the spring 1020, thereby relieving the entire pressure generated in the cavity (inner space) of the container. The valve head is at least partially made of silicone rubber, plastic or metal.

According to some embodiments of the present invention, the spring housing 1006 is formed in the shape of a screw or bolt, thereby being able to be securely fixed to the housing using a fastening nut 1010. An opening portion 1007 is provided at one end of the spring housing 1006 for restricting define having a long spring mounting hole 1012, and a pressure adjusting hole 1014 is provided at the other end for restricting the same central axis as the opening portion 1007. A screw 1016 for engaging with the fastening nut 1010 is formed on the outer circumference of the spring housing 1006 on the spring mounting hole 1012 side. The fastening nut has a hole 1022 for venting excess pressure that builds up in the interior space between the inner and outer shells.

A screw head 1018 is formed at the other end of the spring housing 1006 to be in contact with the inner surface of the housing. In some embodiments, to improve the seal, a gasket or gasket 1012 is provided between the screw head 1018 and the housing.

Some embodiments of the cooking vessel use a valve made of an elastic or compressible material instead of a spring-type valve. Fig. 11 is a drawing showing a pressure control valve 1100 according to some embodiments of the present invention. As shown, in some embodiments, the valve 1100 is made of an elastic or compressible material. The valve 1100 includes a head 1105 formed in a conical shape for opening and closing a hole formed in a housing of the container. The valve also includes a brace 1115 extending from the head 1105. The head 1105 can also be formed in a spherical and similar shape. The diameter of the head 1105 is formed to be of a size sufficient to effectively seal the aperture formed in the housing of the cooking vessel.

In some embodiments, the head 1105 is formed with a groove portion 1120 (e.g., on the side closest to the aperture formed in the housing) to be able to receive the tremendous force (pressure) generated by the concentration of pressure in the interior space of the container (e.g., in the area of the smaller groove portion, rather than closest to the entire face of the opening).

In some embodiments, the head 1105 extends from a hollow cylindrical support 1115 through a neck 1110 securely attached or formed to the side of the head and support 1115. In the example of fig. 11, the diameter of the neck 1110 is smaller than the diameter of the brace 1115, thereby increasing the compressibility of the valve 1100. In addition, this difference in diameter facilitates the release of excess pressure by the brace 1115. In the case of low temperature or in the presence of insufficient pressure (e.g., steam pressure) generated in the internal space, the head 1105 effectively seals the hole formed in the housing in order to prevent unnecessary heat loss from occurring.

In some embodiments, valve 1100 is made of silicone rubber that is resilient and able to withstand high temperatures. In some embodiments, a minimum pressure value is provided (e.g., at 0.5 Kgf/cm)²～0.6Kgf/cm²In between) for the head 1105 of the valve 1100 to be remote from the aperture formed in the housing.

Fig. 12 is a sectional view of still another cooking container 100 of the cooking container of some embodiments. Similar to fig. 8, the cooking vessel is formed in a cup shape. The container has an inner shell 105 and an outer shell 110 for forming an internal cavity or space. The inner space has a heat conducting medium 505. The thermally conductive medium can be any one or more of the various media discussed above, including any one or more of silicone oil, carbon fiber, air, gel, padding, and the like.

The cooking vessel 105 has a heating element 115 different from that of fig. 8. In this example, the heating element is an exothermic ceramic plate. The exothermic ceramic plate is disposed between the outer bottom surface of the inner case 105 and the inner bottom surface of the outer case 110. To absorb microwaves, the bottom of the outer shell of some embodiments of the container 100 has an open portion. The bottoms of the inner shell and the outer shell can be welded into a whole in a certain mode, so that the heat-conducting medium is prevented from leaking from the bottom of the container.

Fig. 12 also shows yet another example of a temperature indicator 1205 of some embodiments of the invention. In this example, the exterior of the housing 110 is at least partially coated with a thermochromic paint or temperature indicator that is capable of withstanding the high temperatures of the cooking container 100. The color of the thermochromic paint changes when the temperature of the cooking container is increased by heating the cooking container.

In some embodiments, the containers are coated with different colors 1210, such as green, yellow, and red. Each different color changes at a different temperature. Typically, coffee is usually heated to about 85 ℃. However, the ideal drinking temperature is approximately 50 ℃ to 55 ℃. In some embodiments, the thermochromic paint on the container provides a visual indication of different temperature levels. For example, the thermochromic label may have a first point at which the color changes when the temperature reaches about 40 ℃, a second point at which the color changes when the temperature reaches about 60 ℃, and a third point at which the color changes when the temperature reaches about 85 ℃. However, some embodiments can have different points that change at different temperature levels.

Thus, the thermochromic temperature indicator can indicate the temperature of the contents of the cooking container more accurately than in fig. 1. Different embodiments provide different visual indicators. For example, some embodiments provide a container lid with a temperature indicator (e.g., a thermometer). An example of such a visual indicator will be described below with reference to fig. 20.

The cooking container of some embodiments is a multipurpose container, not limited to a microwave oven but capable of heating contents by various means. Also, in some embodiments, the multipurpose container can also use a gas stove, an electric stove, or an induction cooker to heat the contents. That is, the container for a microwave oven of some embodiments can be heated by a microwave oven, a range, and an induction cooker as well.

Fig. 13 is an example of a multi-purpose cooking appliance 100 of some embodiments. As shown, the multipurpose cooking appliance includes a main body 1305 and a container lid or cover 150. In some embodiments, the body is made of a certain type of metal. In some embodiments, the metal is stainless steel. In some embodiments, the stainless steel is a food grade stainless steel (e.g., grade 304). In different embodiments, the stainless steel can have different amounts of chromium and nickel.

As shown in fig. 13, the body 1305 is formed as a receiving part for receiving food. The body is formed in different shapes. In the illustrated example, the body has an open area with a bottom surface extending upwardly and terminating at an upper edge. In some embodiments, the upper edge of the body is shaped or stamped in a manner to be rib-shaped (contoured). The interior region of the body can be coated with copper, silver, and/or other materials for rapid heat dissipation.

In some embodiments, the multipurpose cooking appliance includes a container lid. The container lid can provide multiple uses. The container lid is capable of reflecting microwave radiation and blocking heat and moisture. The container lid can include one or more vents 1315 for releasing moisture (e.g., steam). In some embodiments, the vent 1315 can be opened and closed (e.g., manually). The container lid can also include a handle (not shown in the figures). In some embodiments, the container lid or container includes a component (e.g., a silicone ring, gasket) that can prevent arcing (e.g., a spark occurring between the edge of the container lid and the container body). In some embodiments, the container lid includes a silicone ring to sufficiently seal the receptacle to prevent heat loss. In the example of fig. 13, a silicone ring 1320 wraps around the contoured (ribbed) portion of the body. The container lid can be placed in the silica gel circle, the upper end of this circle.

In some embodiments, the multipurpose cooking appliance includes a heat emitting plate secured to the outer bottom surface. The heat releasing plate converts the microwave radiation into heat energy. In some embodiments, the heat release plate is made of a far infrared heating material. The heat release plate of some embodiments is at least partially composed of ceramic. An example of a ceramic heat-emitting plate can be a pyrogen (pyrogen). In some embodiments, the heat-emitting plate can be heated by a gas furnace, an electric furnace, or an induction cooker. On the one hand, the heat-emitting plate can withstand temperatures up to or exceeding 1500 ℃, while on the other hand, the temperature of the range can only reach about 500 ℃.

In some embodiments, the heat-emitting plate is fixed to a support plate, cap, or case. In the example of fig. 13, the cap wraps around the heating element 115. In some embodiments, the cap is welded to the body by one or more different welding techniques (e.g., seamless welding, argon arc welding, and/or laser welding). In some embodiments, the cap is made of metal (e.g., stainless steel) thereby enabling the cooking appliance to be heated by an induction cooker or range (e.g., a gas or electric cooker). In some embodiments, the ceramic plate (e.g., with a metal shell on the outside) can be heated in a microwave oven to a temperature that reaches or exceeds 80 ℃ in less than three minutes.

In some embodiments, the multipurpose cooking appliance can be coated with an exothermic enamel or an exothermic ceramic glaze. For example, the outer surface of the main body of the multipurpose cooking appliance can be at least partially coated with an exothermic enamel. As described above, the exothermic enamel or exothermic ceramic glaze can include manganese-zinc ferrite and silicon iron to absorb microwaves and generate heat. In some embodiments, the outer surface of the body is spray coated with a mixture of manganese-zinc ferrite and silicon-iron to improve thermal conductivity. In some embodiments, the exothermic ceramic glaze is a mixed compound including ferrite, silicon (Si), and aluminum (Al).

Fig. 14 is a bottom view of the multi-purpose cooking appliance of fig. 13. Specifically, as shown, the metal cap case 1310 can have the same shape as the heat release plate 115. The same shape enables the cover case to securely receive the heat radiating plate. In the illustrated example, the cover case and the heat radiating plate are formed in a circular shape. The cover housing 1310 also has an opening for exposing the heat releasing plate 115 (e.g., exposed to microwave radiation, fire, heating surfaces, etc.). In some embodiments, the cover casing or plug-in cover is made of a metal having magnetism (i.e., a ferromagnetic metal), such as stainless steel. The main reason for using ferromagnetic metal is to allow the cooking appliance to heat food through the induction cooker. The metal can also absorb heat from a gas furnace or electric furnace. In some embodiments, the cover housing or plug-in cover is made of a grade of stainless steel. For example, the cover shell can be made of grade 430 stainless steel, which is well known for its corrosion resistance and formability.

Fig. 15 is another example of the container 100 for the microwave oven according to some embodiments. Fig. 15 will be described by referring to fig. 16 showing in more detail the different layers of the main body of the container for a microwave oven of fig. 15. Fig. 15 is a drawing showing a container for a microwave oven of a single-shell structure.

As shown in fig. 15, in some embodiments, the container includes a body 1505 for holding food or beverage. The body has a bottom surface with one or more container walls extending upwardly therefrom to form a receptacle. In some embodiments, the body is made of a certain type of metal. In some embodiments, the metal is stainless steel. In some embodiments, the stainless steel is a food grade stainless steel (e.g., 304). In different embodiments, the stainless steel can have different amounts of chromium and nickel. In some embodiments, the outer surface of the body is coated with a layer of heat generating glaze (e.g., completely). Also, the inner surface of the body can be coated with silver, copper, or other materials.

As shown in fig. 16, the main body is coated with a heating glaze 1610. Specifically, the outer surface of the metal body 1605 is covered with the heating glaze 1610. The heat resistant outer layer 1615 covers the heating glaze 1610. The heating glaze 1610 of some embodiments absorbs electromagnetic waves of a magnetron of a microwave oven and converts them into heat energy by vibration. Subsequently, the thermal energy is transferred to the metal body, thereby uniformly heating the contents of the container on all sides of the container including the side walls and the bottom surface. In some embodiments, the heat-generating glaze is an exothermic enamel or ceramic glaze with manganese-zinc ferrite and ferrosilicon. In some embodiments, the exothermic ceramic glaze is a mixed metal alloy powder compound comprising ferrite, silicon (Si), and aluminum (Al). In some embodiments, the outer surface of the container is at least partially coated with the glaze described above and dried. To form the outer enamel, the dried enamel is subjected to a glass curing process.

The heat-resistant outer layer covers the heating layer. In some embodiments, the heat resistant outer layer has multiple uses. The heat resistant outer layer is capable of thermally insulating the container by capturing heat. The heated container can be handled safely by the heat-resistant outer layer. The heat resistant outer layers of the different embodiments are of different materials. In some embodiments, the heat resistant outer layer has a temperature resistance to withstand temperatures in excess of 260 ℃. In some embodiments, the heat resistant outer layer is composed of polystyrene, such as Syndiotactic Polystyrene (SPS). In some embodiments, the heat resistant layer is composed of a polymer such as polyphenylene sulfide (PPS). To enhance the exothermicity of the container, the PPS of some embodiments includes exothermic particles.

Referring to fig. 15, the container for a microwave oven of some embodiments includes a container cover 150 or a cover. In some embodiments, the container lid or container (upper portion of the container) is surrounded by a silicone part 1515 (e.g., silicone ring, gasket) to prevent arcing (e.g., sparks occurring between the edge of the container lid and the container body). When the container lid is placed on the container, the silicone part can be placed on the top edge of the container, forming a rib shape. The ribbed area (profile) prevents sparking between the upper end edge of the container and the lower portion of the container lid at the edge. As an example, the silicone ring can be formed in various ways to separate the edge of the container cover from the edge of the main body in order to prevent the occurrence of arc discharge.

In some embodiments, the silicone member securely seals the receptacle to prevent heat loss. In the example of fig. 15, the member 1515 surrounds the portion of the container lid that is inserted into the body 1505 (e.g., the protruding rim).

In some embodiments, the container lid includes a handle. The handle can be used to place the container lid on or off the body. Fig. 17 is a cross-sectional view of a container lid handle 1510 according to some embodiments of the invention. The handle includes an upper handle portion 1705, and a main or lower portion 1725. In some embodiments, body 1725 passes through a hole formed in the container lid and is threadably secured to the outside of the container lid by screw 1720. The handle 1510 can also include one or more supports 1715 to prevent the handle from rotating or disengaging from the container lid. In some embodiments, the container lid includes a chime fitting or feature 1710 for sounding when the container is vented of steam. In one example of the sounding member, the sounding member is accommodated on the handle main body. The squealer can be made of metal (e.g., stainless steel) or other material (e.g., plastic).

Fig. 18 is a bottom view of some embodiments of a handle 1510. The figure shows a handle of some embodiments attached to a container lid by screws 1720. The handle can include one or more supports 1715 for holding the handle in place (e.g., in a particular position such that the handle remains stationary and does not rotate).

In some embodiments, the container lid includes a pressure relief switch. Fig. 19 is a drawing showing a container lid handle 1510 having the pressure relief switch 1910. The switch 1901 is located on the upper portion of the body 1725 of the handle. In some embodiments, the switch is formed in a circular shape for it to rotate or switch to a different position (e.g., on or off). The switch is inserted into a hole formed in the lower portion 1725 of the handle. A hole 1905, i.e., an exhaust port, is formed in the lower portion of the handle. When the switch is in the open position, vapor (i.e., water vapor) is vented out of the container through the aperture.

As shown, the switch can be rotated in one direction to release steam, i.e., heated steam, through one or more apertures of the container lid. The switch is also capable of being turned in the other opposite direction, i.e. the direction in which the container for the microwave oven is securely sealed. However, steam can also initially be vented from the container through the holes formed in chime 1710.

Fig. 20 is a plan view of a container lid handle of some embodiments. As shown, some embodiments of the container lid handle (e.g., at an upper portion 1705 of the handle) include a thermometer 2010. The thermometer 2010 of some embodiments includes a pointer 2005 that can rotate as the temperature within the container changes. In some embodiments, the thermometer is formed in a manner that enables visual indication of changes in temperature of the container. In the example of fig. 20, the pointer rotates to a different color as the temperature changes. For example, thermometer 2010 can provide different colors representing low, medium, and high temperatures, etc. Along with or instead of indication by color, the thermometer 2010 can also provide an indication in text and/or numerical form.

Fig. 21 is a cross-sectional view of some embodiments of a container lid 150 and a silicone member 1515. The silicone member of some embodiments is a silicone ring. The silica gel ring is formed into a mode that can separate the edge of the container cover from the edge of the main body, thereby preventing arc discharge. As shown, the rim of the container lid 150 is completely surrounded by a silicone ring 1515. The silicone rubber grommet 1515 can have a bottom or grommet inserted into a container for a microwave oven. In some embodiments, the silicone ring is securely attached to the container lid in a manner (e.g., glued or screwed to the container lid). In some embodiments, when the container for the microwave oven is heated, the silicone ring expands due to the pressure inside the container and seals the container. The steam is then vented out of the container through one or more apertures formed in the container lid (e.g., through the chime, vent).

Different embodiments can have different combinations of components. Further embodiments will now be described with reference to figures 22 to 30. Fig. 22 is a drawing showing a container 100 for a microwave oven according to some embodiments of the present invention. Fig. 23 is a cross-sectional view of the container 100 of fig. 22. The two figures are similar to figures 1 and 2. They show a multi-layered container. However, the outer shell 110 of the container 100 is coated with an exothermic enamel 1610. In particular, the outer surface of the outer shell 110 is at least partially coated with an exothermic glaze. The inner shell (e.g., the outer surface of the inner shell) is not coated because microwaves cannot pass through the metal outer shell. Further, the heating element 115 shown in fig. 23 is not supported (e.g., placed) by any support (e.g., formed at the bottom of the housing). Instead, the heating element is located on a flat surface (e.g., the bottom of the housing). In some embodiments, the heating element is disposed or interposed between the inner shell 105 and the outer shell 110 such that it contacts the inner bottom surface of the outer shell and the outer bottom surface of the inner shell. As shown in the above drawings, the heat-resistant member 120 (e.g., heat-resistant silicone) covers at least a part (e.g., bottom) of the outer surface of the case coated with the exothermic enamel.

Fig. 24 is another example of a container 100 for a microwave oven according to some embodiments of the present invention. Fig. 25 is a cross-sectional view of the container of fig. 24. The two figures are also similar to fig. 1 and 2. However, the heat resistant piece 120 (e.g., heat resistant silicone) is replaced by the heat resistant outer layer 1615 described with reference to fig. 15 and 16. As noted above, the heat resistant layer of some embodiments is comprised of polystyrene, such as Syndiotactic Polystyrene (SPS). Instead, the heat resistant layer of some embodiments is composed of a polymer such as polyphenylene sulfide (PPS). In some embodiments, the PPS can be blended with exothermic particles.

Fig. 26 is a drawing showing still another example of a container 100 for a microwave oven according to some embodiments of the present invention. Fig. 27 is a cross-sectional view of the container of fig. 26. Unlike the two examples described above, the two examples are similar to fig. 3 and 4. However, in both figures, the outer surface of the outer shell is at least partially coated with an exothermic glaze. The exothermic glaze can also be used to coat the containers of fig. 5, 8, 12, and 13.

Fig. 28 is a drawing showing another example of a container 100 for a microwave oven according to some embodiments of the present invention. As shown, the container 100 is formed as a receptacle and has an inner shell 105 and an outer shell 105 connected to form a cavity therebetween. In some embodiments, the upper edges of the two shells are welded together by one or more different welding techniques (e.g., laser welding, argon arc welding). The heat release plate 115 is disposed between the inner case and the outer case. Here, the heat radiating plate is exposed along the bottom surface of the case, thereby converting the absorbed microwaves into heat energy.

In the cavity (i.e., space) between the inner and outer shells, an insulating medium (e.g., a thermally conductive material) is at least partially filled, thereby being able to absorb and retain heat over time. In some embodiments, at least a portion of the outer surface of the housing is coated with a thermal insulating material 2805 to keep the container warm when heated.

Different embodiments use different thermally conductive materials as the insulating medium. In some embodiments, the insulating medium comprises atmospheric air and/or silicone oil. Or, unlike this, the insulating medium can be a thermally conductive pad or a thermally conductive gel. To withstand high temperatures, some embodiments employ silicone-based pads or gels. In some embodiments, the insulating medium comprises a silicone material mixed with an alumina compound. The alumina compound can facilitate absorption and emission of heat generated from the heat release plate 115. In some embodiments, the insulating medium comprises silicone rubber with ferrite particles. The ferrite particle powder contained in the rubber can also generate thermal energy by absorbing electromagnetic waves (for example, by a heat-radiating plate).

As described above, at least a portion of the outer surface of the housing is covered with the thermal insulation material 2805 to preserve the heat of the heated container. In some embodiments, thermal insulation material 2805 comprises a Syndiotactic Polystyrene (SPS) compound. The thermal insulation layer can be formed by a polyphenylene sulfide (PPS) compound. The PPS compound may be mixed with exothermic particles or powder of carbon, for example. The carbon content in the exothermic PPS helps absorb electromagnetic waves, thereby generating heat.

As shown in fig. 28, further, at least a portion of the outer surface of the case is coated with exothermic enamel or exothermic ceramic glaze 1610. In some embodiments, at least a portion of the outer surface of the housing is coated with a glaze and dried. To form the outer enamel, the dried glaze is subjected to a glass curing process.

In some embodiments, the thermochromic paint 2815 covers at least a portion of the outer surface of the housing such that when the receptacle is heated, the thermochromic paint produces one or more different color changes in appearance, and when the container cools, the thermochromic paint returns to the original one or more colors. The container also includes a pressure relief valve 510 to relieve any excess pressure that may develop between the inner and outer shells when the container is heated. Examples of the above-described relief valve are described above with reference to fig. 10 and 11.

Although not shown in the drawings, the container for the microwave oven can include a metal container cover, thereby reflecting the microwave. The container cover can prevent the problem that the contents of the container are excessively dried due to the irradiation of microwaves to the contents. The container for a microwave oven may further include an elastic member (e.g., a silicone ring, a gasket) between the metal container cover and the receiving part, thereby preventing arc discharge from being generated between the metal container cover and the receiving part. Examples of the elastic member are described above with reference to fig. 15 and 21. In the example of fig. 28, the container for the microwave oven is formed in a cup shape. However, the container can be formed in different shapes. For example, the container can be formed as a pan, baking utensil, or the like.

Fig. 29 is a drawing showing still another example of a container 100 for a microwave oven according to some embodiments of the present invention. The container is similar to the example shown in the figures above. The container includes an inner shell 105, an outer shell 110, a thermal insulation medium 2810, a heat release plate 115, a thermochromic coating 2815, a pressure relief valve 510, and a thermal insulation layer 2805. However, the container does not include a heat generating glaze. Instead, the container includes a piece of ferrite rubber 405 attached to the outer bottom surface and covering the heat release plate. Further, the container is formed in the shape of a pot rather than a cup.

Fig. 30 is a drawing showing still another example of a container 100 for a microwave oven according to some embodiments of the present invention. The container is similar to the examples in the two figures described above. The container includes an inner shell 105, an outer shell 110, a thermal insulation medium 2810, a heat release plate 115, a thermochromic coating 2815, a pressure relief valve 510, and a thermal insulation layer 2805. However, the container is formed with a set of bottom supports 3005 as a floor. Also, the rib portion surrounding the container for placing the container cover has a curvature. When the container cover is placed in the container, the steam generated in the container is concentrated to the curved region by the rib-shaped region having a curvature, thereby sealing by moisture.

As described above, the container for a microwave oven of some embodiments can extend the holding time after being heated. Fig. 31 is a graph 3100 showing the result of a thermal conductivity test of the container for a microwave oven of fig. 30. The graph 3100 has a y-axis representing temperature and an x-axis representing time. The points in the graph represent the temperature of the contents (i.e., water) in the container at different time points, and the recording was started from three minutes onwards. The three minute mark points indicate the time when the container is placed in a microwave oven and subjected to microwaving.

As shown in graph 3100 of fig. 31, the temperature of the contents of the container is approximately 175 degrees fahrenheit (F) at three minutes. Subsequently, the temperature was slowly decreased and decreased to 160 ° F at 60 minutes. Again, the temperature slowly dropped and dropped to about 130 ° F at 120 minutes. Finally, at 180 minutes, the temperature of the contents of the container was approximately 97 ° F.

Fig. 32 is still another graph 3200 showing the result of a thermal conductivity test of the container for a microwave oven of fig. 30. Unlike the previous diagram, this diagram shows a pass through 1¹/₂And (5) testing the thermal conductivity in minutes. As in 1¹/₂The temperature of the contents of the container is about 155 deg.f as shown in the minute mark. Then, upon reaching 60 minutes, the temperature was gradually decreased to about 125 ° F. Finally, as shown in graph 3200, the temperature gradually decreased to about 105 ° F upon reaching 120 minutes.

While the invention has been described with reference to numerous specific details, it should be understood that the invention can be embodied in other specific forms without departing from the spirit of the invention. For example, any of the containers described above, which are not coated with an exothermic enamel glaze, can be coated with the glaze. It will thus be appreciated by those skilled in the art that the present invention is not limited by the details set forth in the foregoing description, but is defined by the scope of the claims.

Claims

1. A container for a microwave oven, comprising:

a receiving portion having an inner case and an outer case connected to form a cavity therebetween;

a heat release plate between the inner case and the outer case and exposed along a bottom surface of the outer case to absorb microwaves and convert the microwaves into heat; and

a heat insulating medium disposed in the cavity between the inner shell and the outer shell for absorbing and maintaining heat for a certain period of time,

wherein an exothermic enamel or an exothermic ceramic glaze is coated on at least a part of an outer surface of the outer case,

at least a part of the outer surface of the case is covered with a thermal insulation material so as to thermally insulate the container upon heating, and the thermal insulation material covers a partial area of the receiving portion including the heat release plate,

at least a part of the heat release plate is covered with vacuum for thermal insulation,

a bottom supporter formed at a bottom of the thermal insulation material, the bottom supporter having a vent hole to prevent the bottom surface from being deformed by heat released from the heat releasing plate, thereby securing safety of the container for the microwave oven when heating,

the container for a microwave oven includes a relief valve for relieving an excessive pressure accumulated in a cavity between the inner and outer casings when the container is heated.

2. The container for a microwave oven according to claim 1, wherein the insulating medium comprises atmospheric air or silicone oil.

3. The container for a microwave oven according to claim 1, wherein the insulating medium comprises a thermally conductive pad or a thermally conductive gel.

4. The container for a microwave oven according to claim 1, wherein the insulating medium includes a silicone-based material having an alumina compound.

5. The container for a microwave oven according to claim 1, wherein the insulating medium comprises silica gel having ferrite particles.

6. The container for a microwave oven as claimed in claim 1, wherein the thermal insulation material comprises a Syndiotactic Polystyrene (SPS) compound.

7. The container for a microwave oven according to claim 1, wherein the thermal insulation material comprises polyphenylene sulfide (PPS) compound.

8. The container for a microwave oven according to claim 7, wherein the polyphenylene sulfide compound is mixed with exothermic particles.

9. The container for a microwave oven according to claim 1, wherein a thermochromic paint, which changes color with heating of the container, is coated on at least a portion of an outer surface of the outer case.

10. The container for a microwave oven according to claim 1, further comprising a metal container cover for reflecting the microwave.

11. The container for a microwave oven according to claim 10, further comprising: and a silicone member located between the metal container lid and the receiving portion for preventing an arc discharge from occurring between the metal container lid and an edge of the receiving portion.

12. The container for a microwave oven as claimed in claim 1, further comprising ferrite rubber at least partially covering a bottom of the receiving part.

13. The container for a microwave oven according to claim 1, wherein the container for a microwave oven is a pan, a pot, a baking utensil, or a mug.