KR20230100339A - Stainless steel container for food storage and cooking and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a stainless steel container capable of storing and cooking food, which can: cook food by absorbing microwave energy, generating heat, and conducting the heat to a container main body so as to overcome the limitation that food stored in a stainless steel container cannot be cooked with the radiant heat of microwave energy generated from a microwave oven; cook food by means of not only a scheme that generates heat by absorbing microwave energy generated from a microwave oven but also a scheme that uses induced current caused by a magnetic field generated from an induction range as a heat source; and allow a user to cover the container, in which food is contained, with a lid and store the same in a refrigerator after cooking the food to prevent the food in the container from spoiling or allow a user to heat and eat the food in the container as it is using a microwave oven or an induction range, and to a method for manufacturing a stainless steel container.

Description

Stainless steel container for food storage and cooking and method for manufacturing the same}

The present invention relates to a kitchen container for storing food, and more particularly, to absorb microwave energy to overcome the limitation that food stored in a stainless container body cannot be cooked with radiant heat of microwave energy generated from a microwave oven. It heats up the heat and conducts heat to the container body to cook food, absorbs microwave energy generated from a microwave oven to generate heat, and uses an induced current by a magnetic field generated from an induction stove as a heat source. You can also cook food, and after cooking, cover the food to prevent it from spoiling or spoiling, store it in the refrigerator, and heat it in a microwave oven or induction stove to eat it. A stainless kitchen container that can store and cook food, and It is about its manufacturing method.

In general, kitchen utensils, such as pots, pans, pots, pots, etc., are mainly made of metal materials such as iron, stainless or aluminum, and heat-resistant ceramic materials, and are used for direct fire cooking, and those that do not rot or spoil food, such as side dish containers and bowls. It can be classified as being stored.

Meanwhile, with the recent increase in single-person households, it has become commonplace to store leftover food after cooking at home and sample it again later. In particular, if you want to try again after storing food that needs to be eaten warm, such as soup or chicken, it is good for your health and the taste of the food is better if you warm it up again. However, in most cases, since a kitchen container for cooking food and a kitchen container for food storage are used separately, there is an inconvenience in that the food stored in the kitchen container for food storage must be transferred to the kitchen container for cooking again.

Republic of Korea Patent Registration No. 10-1255330 (Announced on April 16, 2013) Republic of Korea Patent Registration No. 10-2091073 (Announced on March 19, 2020)

Conventionally, there is a plastic kitchen container that can be used in a microwave oven, but when food is stored, it is difficult to store food other than the food because the smell of food is absorbed into the plastic. Furthermore, there is a problem that plastic kitchen containers cannot be used on an induction stove.

The present invention has been proposed to solve the above problems, and it is possible to cook food in a microwave oven or an induction stove, cover the food after cooking, store it in a refrigerator, and then use the microwave oven or induction stove as it is stored later. It relates to a stainless kitchen container capable of storing and cooking food that can be heated and eaten, and a manufacturing method thereof.

In addition, the present invention absorbs microwave energy to generate heat and conducts heat to the container body to overcome the limitation that food stored in the stainless container body cannot be cooked with the radiant heat of microwave energy generated in a microwave oven. It relates to a stainless kitchen container capable of storing and cooking food capable of cooking and a method of manufacturing the same.

In addition, the present invention relates to a stainless kitchen container capable of storing and cooking food by conducting heat to the container body by generating heat with an induced current by a magnetic field generated in an induction stove as well as a microwave oven, and a method for manufacturing the same will be.

A stainless steel kitchen container capable of storing and cooking food according to the present invention includes a container body made of stainless steel having one side open and having an inner space for storing food; a lid that is detachably coupled to the container body and seals an inner space for storing food by being coupled with the container body;

It is formed on the outer bottom surface of the container body, generates heat through electricity induced by responding to the magnetic field generated from the induction stove, and also absorbs microwave energy emitted from the microwave oven to generate heat while conducting heat of 100 ° C or more and 150 ° C or less. a thermosetting polymer layer; and a support protruding downward from an edge of the thermosetting polymer layer and separating the thermosetting polymer layer from the floor at a predetermined height.

According to one aspect of the present invention, the thermosetting polymer layer includes iron (Fe), ferrite, graphite, conductive carbon black, carbonized material, and thermosetting synthetic rubber, has a thickness of 1 mm or more and 1.2 mm or less, and has a flat bottom surface. do.

According to another aspect of the present invention, the thermosetting polymer layer includes iron (Fe), ferrite, graphite, conductive carbon black, carbonized material, and thermosetting synthetic rubber, and has a thickness of 1 mm or more and 1.2 mm or less, and a plurality of It is characterized in that the semi-cylinders are protrudingly formed spaced apart from each other by a certain distance.

A method for manufacturing a stainless kitchen container capable of storing and cooking food according to the present invention includes a container body made of stainless steel, one side of which is opened, an inner space for storing food, and a lid detachably coupled to the container body A method of manufacturing a kitchen utensil into a stainless kitchen utensil capable of storing and cooking food, which generates heat through electricity induced in response to an external magnetic field and also generates heat by absorbing microwave energy.

A method of manufacturing a stainless kitchen container capable of storing and cooking food according to the present invention includes the steps of fixing molds to a lower heating press and an upper heating press; supplying electricity to the lower heating press until the mold fixed to the lower heating press reaches a preheating temperature; placing the container body of the kitchen container on a mold fixed to a lower heating press so that the outer surface of the bottom of the container body of the kitchen container faces upward;

forming an adhesive layer by applying a primer to the outer surface of the bottom of the container body of the kitchen utensil placed on the mold; placing a polymer pad containing iron (Fe), ferrite, graphite, conductive carbon black, carbonized material, and thermosetting synthetic rubber and having a flexible structure having a thickness of 15 mm or more and 25 mm or less on the adhesive layer;

supplying electricity to the upper heating press until the mold fixed to the upper heating press reaches a preset firing temperature; lowering the upper mold fixed to the upper heating press and pressurizing the polymer pad with a pressure of several hundred tons per hour so that the thickness of the polymer pad is 1 mm or more and 1.2 mm or less; maintaining a firing temperature of a mold fixed to an upper heating press and a pressure of several hundred tons per hour for a predetermined firing time; After the firing time has elapsed, raising the upper heating press and removing the container body of the kitchen container in which the polymer layer has been fired from the mold of the lower heating press.

According to the present invention, the step of maintaining the firing temperature of the mold fixed to the upper heating press and the pressure of several hundred tons per hour for a preset firing time is 220 degrees while maintaining the mold fixed to the upper heating press at 180 degrees or more and 200 degrees or less. It is characterized in that the step of pressurizing at a pressure of 100 ton or more and 110 ton or less per hour for more than 240 seconds.

The stainless steel kitchenware according to the present invention includes a container body made of stainless steel and a lid detachably coupled to the container body to seal an inner space for storing food, and a microwave oven is provided on the outer bottom surface of the container body made of stainless steel. By being implemented to be able to cook on an induction stove, after cooking the food, cover the food to prevent it from spoiling or spoiling, store it in the refrigerator, and later heat the food in a microwave oven or induction stove as it is stored. there is.

In addition, the stainless steel kitchen utensil according to the present invention is implemented such that a thermosetting polymer layer that conducts heat while absorbing microwave energy emitted from a microwave oven is formed on the outer bottom surface of the container body made of stainless steel, thereby generating heat in a microwave oven. Although the radiant heat of microwave energy cannot cook food stored in the stainless container body, there is an advantage in that food can be cooked through heat generation and heat conduction of the thermosetting polymer layer.

In addition, since the stainless steel kitchen utensil according to the present invention is implemented by including a thermosetting polymer layer, there is an advantage in that food can be cooked in any range of a microwave oven or an induction stove. In addition, the stainless steel kitchen utensil according to the present invention has the advantage that odors of food are not absorbed during storage, so that even when various foods are alternately stored, unpleasant feelings do not occur due to odors.

1 is an exemplary view for explaining a stainless kitchen container capable of storing and cooking food according to the present invention.
FIG. 2 is an exemplary view for explaining a bottom portion of the stainless kitchen container of FIG. 1 .
3 is an exemplary view for explaining a bottom portion of a stainless kitchen container capable of storing and cooking food according to another embodiment of the present invention.
4 is a flow chart for manufacturing a stainless steel kitchen container capable of storing and cooking food according to the present invention.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the present embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs It is provided to fully inform the holder of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals designate like elements throughout the specification.

Terms used in this specification are used only to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “having” are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in this specification, but one or more other features It should be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

"Stainless" used in this specification is an abbreviation of standard words such as stainless steel and stainless steel, and is a word that has been used as a common noun in the commercial world for a long time.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary view for explaining a stainless kitchen container capable of storing and cooking food according to the present invention, FIG. 2 is an exemplary view for explaining the bottom portion of the stainless kitchen container of FIG. 1, and FIG. 3 is another embodiment of the present invention. It is an exemplary diagram for explaining the bottom portion of a stainless kitchen container capable of storing and cooking food according to the example.

As shown in FIGS. 1 and 2, the stainless kitchen container 100 capable of storing and cooking food according to the present invention is detachably coupled to the container body 110 made of stainless steel and the container body 110. It includes a lid 120, a thermosetting polymer layer 130, and a support 140 that separates the thermosetting polymer layer 130 from the floor at a predetermined height.

One side of the container body 110 is opened and an internal space for storing food is formed and is made of stainless steel. Stainless is a steel alloy containing iron (Fe) and chromium (Cr).

As standards for classifying stainless materials, STS and SUS are widely known. STS is the name of stainless steel included in the KS standard established by the Industrial Standardization Act of the Republic of Korea, and SUS is the name of stainless steel included in the Japanese industrial standard JIS standard. Stainless is generally classified into austenite, ferrite, and martensite based on internal components.

Austenitic stainless steel is the 300 series mainly composed of chromium (Cr) and nickel (Ni), such as 301/L, 302, 303F, 304/L/LN/N1/J1, 305, 309S, There are 310S, etc., and it has excellent corrosion resistance, heat resistance, low-temperature strength, low-temperature toughness, mechanical properties and moldability.

Ferrite-based stainless steel is the 400 series with iron (Fe) and chromium (Cr) as main components, such as 409L, 410L, 410UF, 429EM, 430/RE/J1L/Ti, 436L, 439/XF, 441 , 444, etc., has magnetism, has excellent thermal conductivity compared to 300 series, and has a low thermal expansion coefficient, so it has the advantage of less material deformation during heating. In particular, STS 439 has excellent workability, corrosion resistance, and heat resistance compared to STS 304 and STS 430, so it is easy to process, has high strength, and has excellent surface gloss, providing a clean feeling and creating a clean atmosphere. The container body 110 is preferably made of ferrite-based stainless steel.

The lid 120 is detachably coupled to the container body 110 and is combined with the container body 110 to seal the outer space of the inner space for storing food. In order to lower the steam pressure inside the container body 110 due to steam generated from food during cooking, the lid 120 may have a steam discharge groove formed in a furrow shape having a predetermined depth on the inner surface of the lid 120 .

The container body 110 made of stainless absorbs microwave energy generated from a microwave oven and conducts heat, but the heat conduction speed is very slow, and the water contained in the container body 110 cannot be cut off with the heat, furthermore cold food. You can't even heat it up. Accordingly, in the present invention, a thermosetting polymer layer 130 is used to conduct hot heat to the container body 110 made of stainless steel.

As shown in FIG. 2 , the thermosetting polymer layer 130 is formed on the outer bottom surface of the container body 110 . For example, the thermosetting polymer layer 130 includes iron (Fe), ferrite, graphite, conductive carbon black, a carbonized material, and thermosetting synthetic rubber. The thickness of the thermosetting polymer layer 130 is greater than or equal to 1 mm and less than or equal to 1.2 mm and, for example, may be made flat from its bottom surface.

As another example, as shown in FIG. 3 , the thermosetting polymer layer 130 may be formed so that convex portions 150 having a plurality of semi-cylindrical cross-sections are spaced apart from each other by a predetermined distance from the bottom surface of the thermosetting polymer layer 130 . The thermosetting polymer layer 130 having such a shape can be ventilated through the space between the convex portions, and the convex portions absorb more microwave energy generated from a microwave oven and emit more heat to shorten the heating time. can

The thermosetting polymer layer 130 may generate heat through electricity induced in response to a magnetic field generated from an induction range. In general, an induction stove has a built-in coil for generating a magnetic field by receiving power and applying a high voltage, and when a high voltage is applied to the coil, a magnetic field is induced, and the metal body in the area affected by the magnetic field is heated.

The thermosetting polymer layer 130 generates heat by absorbing microwave energy emitted for cooking food in a microwave oven, for example, electromagnetic radiation at a frequency of about 0.3 to 300 GHz, typically about 2.45 GHz.

The thermosetting polymer layer 130 is formed on the outer bottom surface of the container body, and generates heat through electricity induced in response to a magnetic field generated from an induction stove or by absorbing microwave energy emitted from a microwave oven to generate heat at a temperature of 100 ° C or more and 150 ° C or less. It is implemented to conduct heat of The heat transmitted to the container body can reach 100℃ or more, so the water contained in the container body can be boiled. In addition, since the heat conducted to the container body is implemented at 150° C. or less, it is possible to prevent melting of the plastic lid coupled to the container body by the heat of the container body.

Referring to FIG. 2 , the support 140 protrudes downward from the edge of the thermosetting polymer layer 130 and separates the thermosetting polymer layer 130 from the bottom on which the container is placed at a certain height. This allows microwave energy generated by the microwave oven to be reflected inside the microwave oven and absorbed by the thermosetting polymer layer 130 .

The stainless steel kitchen utensil 100 according to the present invention includes a container body 110 made of stainless steel and a lid 120 detachably coupled to the container body 110 to seal an inner space for storing food, and The outer bottom surface of the container body 110 made of is implemented to be cooked in a microwave oven or induction stove, so that food can be cooked in a microwave oven or induction stove, and after cooking, the lid is closed so that the food does not rot or spoil. Cover and seal, store in the refrigerator, and later heat the food in a microwave oven or induction stove as it is stored.

4 is a flow chart for manufacturing a stainless steel kitchen container capable of storing and cooking food according to the present invention.

The worker prepares a container body made of stainless steel in the workplace, one side of which is opened, and an inner space for storing food is formed. Then, the worker fixes the mold to the lower heating press and the upper heating press (S411). Thereafter, the worker supplies electricity to the lower heating press until the mold fixed to the lower heating press reaches the preheating temperature (S412).

Thereafter, the operator places the container body of the kitchen container on the mold fixed to the lower heating press so that the outer surface of the bottom of the container body of the kitchen container faces upward (S413). Thereafter, the worker forms an adhesive layer by applying a primer to the bottom outer surface of the container body of the kitchen container placed on the mold (S414).

The primer may be a mixture of polyurethane (Adipic acid polymer with 2,2-dimethyl-1,3-propanediol, ethylene glycol and hexamethyleneisocyanate) resin, dimethyl carbonate, and water. The primer can be applied at 2-3 g/m 2 . When the primer is applied at less than 2 g / m 2 , it may not adhere perfectly to the polymer pad, and when it is applied in excess of 3 g / m 2 , it may flow out of the polymer pad, so it is preferable to use it within the above range.

Thereafter, the operator places a polymer pad having a flexible structure with a thickness of 15 mm or more and 25 mm or less, including iron (Fe), ferrite, graphite, conductive carbon black, carbonized material, and thermosetting synthetic rubber, on the adhesive layer (S415).

As conductive carbon black, Ketjen Black and Orion Engineered Carbon's Printex XE2 can be obtained and used commercially. The carbon powder exhibiting microwave absorbing properties is used. As a thermosetting synthetic rubber, it becomes a network structure as the polymerization reaction of the polymer proceeds, and once cured, it does not soften even when heat is applied, and not only increases mechanical strength, but also does not dissolve in solvents. use. For example, thermosetting synthetic rubber may be a thermosetting resin such as urea resin, melamine resin, phenolic resin, epoxy resin, unsaturated polyester, alkyd resin, urethane resin, or ebonite.

Electricity is supplied to the upper heating press until the mold fixed to the upper heating press reaches a preset firing temperature. Thereafter, the worker lowers the upper mold fixed to the heating press and presses it with a pressure of several hundred tons per hour so that the thickness of the polymer pad is 1 mm or more and 1.2 mm or less (S416). For example, the mold fixed to the upper heating press is pressed at a pressure of 100 ton or more and 110 ton or less per hour for 220 seconds or more and 240 seconds or less while maintaining a firing temperature of 180 degrees or more and 200 degrees or less.

Thereafter, the worker maintains the firing temperature of the mold fixed to the upper heating press and the pressure of several hundred tons per hour for a predetermined firing time (S416). Thereafter, after the firing time has elapsed, the operator raises the upper heating press and removes the container body of the kitchen container in which the thermosetting polymer layer is fired from the mold of the lower heating press (S417).

The thermosetting polymer layer fired after step S417 has a thickness of 1 mm or more and 1.2 mm or less, and may be implemented flat from its bottom surface depending on the mold used.

Depending on the shape of the heating press, the convex portions 150 having a plurality of semi-cylindrical cross-sections may be protruded apart from each other by a predetermined distance.

In the stainless steel kitchenware manufactured by the manufacturing method according to the present invention, the outer bottom surface of the container body made of stainless absorbs microwave energy generated from a microwave oven to generate heat, as well as induced by a magnetic field generated from an induction stove. By being implemented by including a thermosetting polymer layer capable of using current as a heat source, food can be cooked on any range among microwave ovens and induction stoves, and can be stored in a refrigerator after being covered with a lid when stored.

The present invention has been described above based on several examples, which are intended to illustrate the present invention. A person of ordinary skill in the art may change or modify the above embodiment into other forms while maintaining the technical idea. However, since the scope of the present application is determined by the claims below, such variations or modifications may be construed as being included in the scope of the claims below.

100: stainless kitchen container
110: container body
120: lid
130: thermosetting polymer layer
140: support
150: convex part

Claims (5)

A method of manufacturing a stainless kitchen container that can store and cook food,
fixing the mold to the lower heating press and the upper heating press;
supplying electricity to the lower heating press until the mold fixed to the lower heating press reaches a preheating temperature;
placing the container body of the kitchen container on a mold fixed to a lower heating press so that the outer surface of the bottom of the container body of the kitchen container faces upward;
forming an adhesive layer by applying a primer to the outer surface of the bottom of the container body of the kitchen utensil placed on the mold;
placing a polymer pad containing iron (Fe), ferrite, graphite, conductive carbon black, carbonized material, and thermosetting synthetic rubber and having a flexible structure having a thickness of 15 mm or more and 25 mm or less on the adhesive layer;
supplying electricity to the upper heating press until the mold fixed to the upper heating press reaches a preset firing temperature;
lowering the upper mold fixed to the upper heating press and pressurizing the polymer pad with a pressure of several hundred tons per hour so that the thickness of the polymer pad is 1 mm or more and 1.2 mm or less;
maintaining a firing temperature of a mold fixed to an upper heating press and a pressure of several hundred tons per hour for a predetermined firing time;
After the firing time has elapsed, raising the upper heating press and removing the container body of the kitchen container in which the polymer layer is fired from the mold of the lower heating press;
Method for manufacturing a stainless kitchen container capable of storing and cooking food comprising a. The method of claim 1,
During the preset firing time, maintaining the firing temperature of the mold fixed to the upper heating press and the pressure of several hundred tons per hour,
Characterized in that the step of pressurizing the mold fixed to the upper heating press at a pressure of 100 ton or more and 110 ton or less per hour at 220 seconds or more and 240 seconds or less while maintaining 180 degrees or more and 200 degrees or less,
A method for manufacturing stainless kitchen utensils capable of storing and cooking food. As a stainless steel kitchen container that can store and cook food,
a container body made of stainless steel having one side open and having an inner space for storing food;
a lid that is detachably coupled to the container body and seals an inner space for storing food by being coupled with the container body;
It is formed on the outer bottom surface of the container body, generates heat through electricity induced by responding to the magnetic field generated from the induction stove, and also absorbs microwave energy emitted from the microwave oven to generate heat while conducting heat of 100 ° C or more and 150 ° C or less. a thermosetting polymer layer;
a support that protrudes downward from an edge of the thermosetting polymer layer and separates the thermosetting polymer layer from the floor at a predetermined height;
A stainless steel kitchen container capable of storing and cooking food, including a. The method of claim 3,
The thermosetting polymer layer,
Characterized in that it contains iron (Fe), ferrite, graphite, conductive carbon black, carbonized material, and thermosetting synthetic rubber, and has a thickness of 1 mm or more and 1.2 mm or less, and the bottom surface is flat,
Stainless kitchen utensils for storing and cooking food. The method of claim 3,
The thermosetting polymer layer,
Containing iron (Fe), ferrite, graphite, conductive carbon black, carbonized material, and thermosetting synthetic rubber, the thickness of which is 1 mm or more and 1.2 mm or less, and the convex portion having a plurality of semi-cylindrical cross sections from the bottom surface is separated by a certain distance from each other. Characterized in that it protrudes at a distance,
Stainless kitchen utensils for storing and cooking food.

Images