JP2008255430A - Enamel material and gas range using the enamel material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an enamel material hardly depositing dirt over the whole surface and having improved maintainability. <P>SOLUTION: A glass layer 3 comprising glaze 3a for enamel is formed on the surface of a base material 2 for enamel and a ceramic layer 4 comprising ceramic powder 4a having hydrophobicity or ceramic powder 4b having oxidative activity is formed on the surface of the glass layer 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an enamel material in which a glass layer made of an enamel glaze is provided on the surface of an enamel substrate and a gas stove using the enamel material.

The enamel material as described above is used, for example, in equipment such as a gas stove provided in a kitchen. Since such equipment is in an environment where various types of dirt are likely to adhere, the enamel material used in such equipment is attached to the surface in order to improve the careability such as removing dirt. It is required to be difficult.
Therefore, in the conventional enamel material, a glass layer made of enamel glaze is provided on the surface of the enamel substrate, and a self-cleaning layer in which the enamel glaze and ceramic powder are mixed is provided on the surface of the glass layer. (For example, refer to Patent Document 1). The ceramic powder is an oxidation catalyst having an oxidation activity to oxidize and decompose attached dirt at a high temperature, and the oxidation catalyst is composed of one or more of iron oxide, manganese oxide, and copper oxide.
In this conventional enamel material, dirt adhering to the self-cleaning layer due to the oxidation activity of the ceramic powder can be decomposed, so that it is difficult for the dirt to adhere to the surface.

JP 2004-50764 A

  In the conventional enamel material, since the self-cleaning layer is provided by mixing the enamel glaze and the self-cleaning material, the surface of the enamel material is only partially exposed with the ceramic powder. The exposed surface area of the ceramic powder becomes smaller. Therefore, since the effect of decomposing the dirt adhering to only a part of the surface of the enamel material cannot be obtained, it is difficult to make the dirt adhere to the entire surface of the enamel material. There was a possibility that improvement could not be achieved.

  The present invention has been made paying attention to such a point, and an object of the present invention is to make it difficult for dirt to adhere to the entire surface, and an enamel material capable of improving the careability and its It is in providing a gas stove using enamel material.

  In order to achieve this object, the first characteristic configuration of the enamel material according to the present invention is that a glass layer made of enamel glaze is provided on the surface of the enamel substrate, and the glass layer surface has hydrophobicity. The ceramic layer which consists of ceramic powder or ceramic powder which has oxidation activity exists in the point provided.

That is, since the ceramic layer made of ceramic powder having hydrophobicity is provided on the surface of the glass layer, the portion made of ceramic powder having hydrophobicity on the surface of the enamel material is provided so that most of the whole is exposed. be able to. Since the ceramic powder having hydrophobicity has a property that it is difficult for dirt to adhere to it, it is possible to satisfactorily suppress the adhesion of dirt on the entire surface of the enamel material.
In addition, since the ceramic layer made of ceramic powder having oxidation activity is provided on the surface of the glass layer, the portion made of ceramic powder having oxidation activity on the surface of the enamel material is provided with the most part exposed. It is possible to obtain the effect of decomposing dirt that adheres well on the entire surface of the enamel material.
From the above, it has become possible to provide an enamel material that can be made difficult to adhere to dirt over the entire surface and can be improved in care.

  According to a second characteristic configuration of the enamel material according to the present invention, the ceramic powder dispersion is sprayed onto the enamel base material on which the enamel glaze is adhered, and the enamel is sprayed on the enamel. The glass layer and the ceramic layer are formed by firing the base material.

  That is, since the enamel substrate onto which the ceramic powder dispersion is sprayed is fired, a portion of the ceramic powder sinks or melts into the enamel glaze. Therefore, the ceramic layer can be firmly fixed to the surface of the glass layer, and the ceramic layer can be fixed accurately.

  A third characteristic configuration of the enamel material according to the present invention is that the hydrophobic ceramic powder is composed of at least one of tungsten oxide, nickel oxide, and silicon carbide.

  That is, the ceramic powder having hydrophobicity can be composed of at least one accurate material of tungsten oxide, nickel oxide, and silicon carbide.

  A fourth characteristic configuration of the enamel material according to the present invention is that the ceramic powder having oxidation activity is composed of copper oxide or a mixture of manganese oxide and copper oxide.

  That is, the ceramic powder having oxidation activity can be composed of an accurate material of copper oxide or a mixture of manganese oxide and copper oxide.

  The gas stove according to the present invention has a characteristic configuration in which the enamel material according to any one of the first to fourth characteristic configurations places and supports an object to be heated to be heated by a burner flame. It is in the point provided in.

That is, since the virtues are in an environment in which various stains are likely to adhere, by providing the enamel material according to any one of the above first to fourth characteristic configurations on the virtues, the entire surface of the virtues is covered. Therefore, it is possible to make it difficult for dirt to adhere, and it is more useful to improve the careability.
Moreover, since the ceramic layer is provided over the entire surface of the virtues, the heat resistance can be increased. Therefore, even if the virtues are heated by the flame of the burner, it is possible to withstand the heating, but it is possible to make it difficult for dirt to adhere to the surface of the virtues.

An embodiment of an enamel material according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the enamel material 1 is provided with a glass layer 3 made of an enamel glaze 3a on the surface of an enamel substrate 2, and the glass layer 3 has a hydrophobic ceramic powder 4a or A ceramic layer 4 made of ceramic powder 4b having oxidation activity is provided.

  The hydrophobic ceramic powder 4a is composed of any one of tungsten oxide, nickel oxide, and silicon carbide. The average particle diameter of tungsten oxide is 0.8 (μm), the average particle diameter of nickel oxide is 0.08 (μm), and the average particle diameter of silicon carbide is 0.7 (μm).

  The ceramic powder 4b having oxidation activity is composed of copper oxide or a mixture of manganese oxide and copper oxide. The average particle diameter of copper oxide is 2 (μm), and the average particle diameter of the mixture of manganese oxide and copper oxide is 8.9 (μm). The mixture of manganese oxide and copper oxide was subjected to semi-quantitative composition analysis (detecting the type and approximate content of elements contained in the sample) using an electronic microanalyzer (EPMA), and the results are shown in FIG.

The enamel substrate 1 is dipped in the enamel glaze 3a and dried. Ceramic powders 4a and 4b are mixed with water and a dispersing agent to form a dispersion. After drying, the dispersion is sprayed on the surface of the enamel glaze 3a adhering to the surface of the enamel substrate 1, and dried again. . This dispersion does not contain enamel glaze 3a. Thereafter, at 800 ° C., for example, the enamel substrate 1 on which the ceramic powders 4 a and 4 b are sprayed is fired for 3 minutes, for example, and cooled to room temperature, thereby forming the glass layer 3 and the ceramic layer 4. At this time, the ceramic powders 4a and 4b are fired and fixed to the glass layer 3 on the bottom side.
In this way, ceramic powders 4a and 4b mixed with water are sprayed onto the enamel base material 1 on which the enamel glaze 3a is adhered, and the enamel base material on which the ceramic powders 4a and 4b are sprayed. The glass layer 3 and the ceramic layer 4 are formed by baking 1.

An example in which the enamel material 1 according to the present invention is used in a gas stove 8 is shown in FIG.
An enamel material 1 according to the present invention is provided in a goblet 7 that places and supports a cooking target 6 heated by a flame 5 a of a burner 5 in a gas stove 8. That is, the glass layer 3 made of the enamel glaze 3a is provided on the surface of the virtues 7 using the virtues 7 as the enamel substrate 2, and the hydrophobic ceramic powder 4a or the ceramic having oxidation activity is provided on the surface of the glass layer 3. A ceramic layer 4 made of powder 4b is provided.

Hereinafter, a solution prepared by mixing eggs, soy sauce, and sugar at a ratio of 1: 1: 1 by weight based on the test results for the enamel material according to the present invention is 0.5 (ml) for each of samples A to F. Drop it, heat it at 250 ° C. for 30 minutes in an electric furnace, let it cool, and peel off the burnt solution. This process is repeated.
For each of the samples A to F, it is possible to repeatedly maintain the state in which “there is no scoring at all, but it is easily removed without remaining scoring” or “the scoring remains but is removed” for each of the samples A to F. A scorch test was conducted.

The experimental results are shown in FIG. In FIG. 4, sample A is a case where nickel oxide is used as the ceramic powder 4a having hydrophobicity, and sample B is a case where tungsten oxide is used as the ceramic powder 4a having hydrophobicity. Sample C is a case where silicon carbide is used as the hydrophobic ceramic powder 4a. Sample D is a case where a mixture of copper oxide and manganese oxide is used as the ceramic powder 4b having oxidation activity, and Sample E is a case where copper oxide is used as the ceramic powder 4b having oxidation activity. Sample F is a conventional enamel material provided with a glass layer made of glaze for enamel without using ceramic powders 4a and 4b.
As shown in FIG. 4, samples A to E in which ceramic powders 4 a and 4 b mixed with water are sprayed on the enamel base material 1 on which the enamel glaze 3 a is adhered are samples of conventional enamel materials. It can be seen that dirt is less likely to adhere than F. Therefore, it is difficult for dirt to adhere, so that the careability can be improved.

Since the melting points of nickel oxide, tungsten oxide, and silicon carbide are all 1000 ° C. or higher, the enamel material 1 in which the ceramic layer 4 is formed from the ceramic powder 4a having hydrophobicity has heat resistance.
Moreover, since the melting points of copper oxide and manganese oxide are both 1000 ° C. or higher, the enamel material 1 in which the ceramic layer 4 is formed from the ceramic powder 4b having oxidation activity has heat resistance.
Therefore, as shown in FIG. 3, even when the enamel material 1 according to the present invention is provided on the virtues 7 heated by the flame of the burner 5, the surface of the virtues 7 adheres to dirt while being able to withstand the heating. Can be difficult.

  In the present invention, a glass layer made of enamel glaze is provided on the surface of the enamel substrate, and it is possible to make it difficult for dirt to adhere to the entire surface, and various enamels can be improved in care. Can adapt to the material.

Cross section of enamel material Table showing the results of semi-quantitative composition analysis for mixtures of manganese oxide and copper oxide The figure which shows the example which used the enamel material for the gas stove Table showing results of burnt test

Explanation of symbols

2 Base material for enamel 3 Glass layer 3a Glaze for enamel 4 Ceramic layer 4a Ceramic powder with hydrophobicity 4b Ceramic powder with oxidation activity 5 Burner 5a Flame 6 Object to be heated 7 Gotoku 8 Gas stove

Claims (5)

  An enamel material in which a glass layer made of a glaze for enamel is provided on the surface of an enamel substrate, and a ceramic layer made of ceramic powder having hydrophobicity or ceramic powder having oxidation activity is provided on the surface of the glass layer.   By spraying the dispersion of the ceramic powder onto the enamel substrate on which the enamel glaze has adhered to the surface, and firing the enamel substrate onto which the dispersion has been sprayed, the glass layer and the The enamel material according to claim 1, wherein a ceramic layer is formed.   The enamel material according to claim 1 or 2, wherein the hydrophobic ceramic powder is composed of at least one of tungsten oxide, nickel oxide, and silicon carbide.   The enamel material according to any one of claims 1 to 3, wherein the ceramic powder having oxidation activity is composed of copper oxide or a mixture of manganese oxide and copper oxide.   The gas stove provided in the five virtue which the enamel material of any one of Claims 1-4 mounts and supports the to-be-heated object for cooking heated with the flame of a burner.

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