KR20130034786A - Manufacturing method of cooking utensil - Google Patents

Abstract

Disclosed is a kitchen container manufacturing method. (a) preparing a container-shaped body having excellent thermal conductivity; (b) preparing a coating liquid containing a resistance heating element powder and a fluororesin; (c) applying the coating solution to the body portion; And (d) calcining the applied coating liquid.

Description

Method of manufacturing cookware {MANUFACTURING METHOD OF COOKING UTENSIL}

The present invention relates to a method of manufacturing a cooking utensil, and to a method of manufacturing a cooking utensil capable of induction heating of a resistance heating element.

The conventional cooking heater of the resistance heating element induction heating method is a form attached to the iron plate 12 capable of resistance heating to the bottom surface of the body portion 11 made of aluminum, as shown in FIG.

By using such a conventional cooking utensil 10, when cooking, the cooking is exposed to a high temperature close to 400 degrees Celsius, and when not cooking, it is brought to room temperature again. In this case, the body portion 11 and the iron plate 12 having different coefficients of thermal expansion generate a gap at their interface and peeling occurs.

Another method is to coat iron by melting the iron at a high temperature and then melting the surface of the aluminum body with a gun. In the case of such a fused coating, since the iron component is directly bonded to the body part made of aluminum, the peeling phenomenon due to thermal expansion could not be prevented.

On the other hand, when the iron plate 12 is coupled to the body portion 11, the weight of the overall cooking utensil 10 is heavy, it was inconvenient for women to move in one hand.

The present invention is to provide a method for manufacturing a cooking utensil coated with a resistance heating element powder.

In addition, the present invention is to provide a method for producing a cooking utensil coated with a resistance heating element powder in the process of coating a fluorine resin.

In addition, the present invention is to provide a method for manufacturing a cooking utensil covered with a protective layer on the resistance heating element powder coating film.

According to one aspect of the invention,

(a) preparing a container-shaped body having excellent thermal conductivity;

(b) preparing a coating liquid containing a resistance heating element powder and a fluororesin;

(c) applying the coating solution to the body portion; And

(d) there is provided a cooking appliance manufacturing method comprising the step of firing the coating solution.

 In addition, the step (c),

There is provided a cooking appliance manufacturing method, wherein the coating liquid is applied to the inside of the body portion.

The present invention provides a method for manufacturing a cooking utensil coated with a resistance heating element powder.

In addition, the present invention is to provide a method for manufacturing a cooking utensil coated with a resistance heating element powder in the process of coating a fluorine resin.

In addition, an object of the present invention is to provide a method of manufacturing a cooking utensil covered with a protective layer on a resistance heating element powder coating film.

1 is a cross-sectional view of a kitchen vessel according to the prior art.
2 is a flow chart of a kitchen container manufacturing method according to an embodiment of the present invention.
3 to 5 is a process diagram of a kitchen vessel manufacturing method according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. , Thereby not limiting the spirit and scope of the present invention.

2 is a flow chart of a kitchen container manufacturing method according to an embodiment of the present invention. 3 to 5 is a process chart of the kitchen container manufacturing method according to an embodiment of the present invention.

In the cooking vessel manufacturing method of the present embodiment, the resistance heating element powder is simultaneously coated in the process of coating the fluorine resin, thereby forming a coating film including the resistance heating element powder without a separate process. Thus, by coating the resistance heating element in the form of powder, the peripheral fluorine resin layer absorbs this expansion change even if thermal expansion occurs, it is possible to produce a kitchen vessel that does not occur even if the temperature changes frequently.

Hereinafter, a method of manufacturing a kitchen container according to the present embodiment will be described with reference to the flowchart of FIG. 2.

S11 is a step of preparing a container-shaped body portion excellent in thermal conductivity. The body portion 21 is formed in a container shape so as to contain food. In order to cook, the entire body portion 21 should have good thermal conductivity. Body portion 21 is preferably made of aluminum or its alloys.

S12 is a step of preparing a coating liquid 22 containing the resistance heating element powder 222 and the fluororesin 221. Cooking utensils such as a frying pan are coated with a fluororesin 221 to protect the bottom surface without food. When the resistance heating element powder 222 is put into the liquid fluorine resin 221 and mixed, the coating liquid 22 is completed. The resistance heating element powder 222 may be in the form of carbon nanotubes, or may be nano-sized iron. In order to disperse the resistance heating element powder 222 in the coating liquid 22, a separate dispersant may be further mixed.

S13 is a step of applying the coating liquid to the body portion. In general, as shown in FIG. 5, the coating liquid 22 may be coated on the bottom surface of the body portion 21. However, the coating liquid 22 may be coated on the lower surface of the outside of the body portion 22 or the inner wall and the outer wall.

When the coating solution 22 is evenly coated, the resistance heating element powder contained in the coating solution 22 is evenly spread and coated.

S14 is a step of baking the applied coating liquid. The liquid coating liquid 22 is cured through a baking process. Thus, the hard coating film 23 is completed as shown in FIG.

As shown in FIG. 6, the coating film 23 according to the present embodiment has a form in which the resistance heating element powder 222 is dispersed in the cured fluorine resin 221. The resistance heating element powder 222 is repeated at high temperature and room temperature by induction heating, so that the fluorine resin 221 can absorb such expansion and contraction even if the resistance and expansion are repeated. In general, when a metal is combined with another kind of metal, stresses of expansion and contraction are concentrated in one place, and peeling occurs at that part.

However, in this embodiment, the resistance heating element is in powder form. Therefore, stress due to thermal expansion is not well transmitted to the neighboring resistance heating element powder. As a result, stress concentration is not formed anywhere.

Conventionally, as shown in FIG. 1, since a separate iron plate 12 is attached to the bottom surface of the body portion 11, a considerable weight is increased. In addition, since the resistance heating element powder is mixed with the coating film 23 at a fine thickness, the weight of the cooking utensil 20 does not change significantly.

On the other hand, conventionally, in order to make a cooking utensil such as a frying pan into a resistive heating mechanism, it has to be divided into a fluororesin coating step and a step of attaching an iron plate to the bottom surface of the frying pan. However, in the present embodiment, by coating the resistance heating element on the frying pan at the same time as the fluorine resin coating process, it is possible to manufacture the frying pan without additional process.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Modifications and additions by those skilled in the art to an equivalent range based on the embodiments will also fall within the scope of the present invention.

Body part (21) Coating liquid (22)
Fluorine Resin (221) Resistance Heating Element Powder (222)
Coating Film (23)

Claims (4)

(a) preparing a container-shaped body having excellent thermal conductivity;
(b) preparing a coating liquid containing a resistance heating element powder and a fluororesin;
(c) applying the coating solution to the body portion; And
(d) firing the coated coating solution.
The method of claim 2,
The step (c)
A cooking appliance manufacturing method characterized in that the coating liquid is applied to the inside of the body portion. The method of claim 2,
The resistance heating element powder is a cooking appliance manufacturing method characterized in that the carbon.
The method of claim 3,
After the step (d), the cooking appliance manufacturing method further comprising the step of coating a protective layer.

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