JP2720671B2 - Cooking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooker provided with a heater and a catalyst layer for decomposing oil in a heating chamber.

[0002]

2. Description of the Related Art Conventionally, this type of cooker has a structure as shown in FIG. That is, in the heating chamber 1, the metal mesh 8 is sandwiched between the side wall 2 and the metal net 8 to hold the catalyst layer 7, and the metal net 7 is fixed to the metal net 7 using the L-shaped fitting 9 and the rivet 10 to fix the metal net 7 in the heating chamber 1. 7 was fixed to the side wall 2.

[0003]

However, the above configuration has the following problems.

First, the structure for attaching the catalyst layer 7 to the side wall 2 is complicated, and mass production is difficult. Second, the L-shaped metal fittings 9 and rivets 10 which are not related to the original function are required, which causes a cost increase. Third, the L-shaped fitting 9 is exposed in the heating chamber 1, and the user may cut his hand at the edge of the end face of the L-shaped fitting 9.

The present invention has been made to solve the above-mentioned conventional problems, and a first object of the present invention is to provide an inexpensive and safe cooking device which can easily attach a catalyst layer to a side wall in a heating chamber and can be easily mass-produced. It is in.

A second object of the present invention is to provide a cooker which can easily purify the catalyst layer when purifying it.

[0007]

In order to solve the above-mentioned problems, a cooking device according to the present invention comprises a heating chamber in which a food such as fish is placed, a heater installed in the heating chamber, and a heating chamber. Side walls forming a side surface of the heating chamber, an upper plate forming a top surface of the heating chamber, a bottom plate forming a bottom surface of the heating chamber, and a catalyst layer disposed on the side wall to decompose plate-like oil stains, A metal net for holding the catalyst layer, wherein the catalyst layer is fixed by sandwiching the catalyst layer between the metal net and the side wall, and the metal net is formed by the side wall and the upper plate and the side wall and the bottom plate. To fix the metal net. Further, the bottom plate is formed of a metal having excellent heat reflectivity such as an aluminum-plated steel plate or a stainless steel having a heat reflectivity of 70% or more.

[0008]

According to the present invention, the metal net for holding the catalyst layer is fixed by being sandwiched between the side wall and the upper plate and the side wall and the bottom plate constituting the heating chamber. The metal net can be fixed without using any L-shaped brackets or rivets. Therefore, assembly becomes easy, mass production becomes possible, and the number of parts is reduced, resulting in cost reduction. Further, since the metal such as the L-shaped bracket is not exposed in the heating chamber, there is no danger that the user will cut his hand.

Further, since the bottom plate is made of a metal having excellent heat reflectivity when purifying the catalyst layer, the temperature of the catalyst layer provided on the side wall increases, and the purification performance is improved.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a front sectional view of one embodiment of the present invention. 1 is a heating chamber on which food such as fish is placed and cooked, 2 is a metal side wall forming the side surface of the heating chamber 1, 3 is a metal upper plate forming the upper surface of the heating chamber 1, and 4 is a bottom surface of the heating chamber 1. 5 is a first heater attached to the upper plate 3 for heating and cooking food, 6 is a second heater installed at a position opposed to the first heater and the food, 7 is a catalyst layer which decomposes and purifies oil and dirt fixed to the side wall 2, 8
Is an expanded metal net made of aluminum for fixing the catalyst layer 7 and protecting the surface.

FIG. 2 is an enlarged sectional view of a fixed portion of the metal net 8. A portion narrowed by the thickness of the catalyst layer 7 is formed on the side wall 2, the catalyst layer 7 is inserted into the narrowed portion, and a metal net 8 is put on the catalyst layer 7 (on the side of the heating chamber 1). The metal net 8 is firmly fixed by being sandwiched between the side wall 2 and the upper plate 3. The side wall 2 and the upper plate 3 are connected by spot welding or caulking. With this configuration, unnecessary parts other than the side wall 2 and the upper plate 3 forming the heating chamber 1 are not used for fixing the metal net 8, so that when mass production is provided, the apparatus can be made efficiently and easily manufactured. Further, since the number of components is small, an inexpensive device can be obtained. Furthermore, since only the metal net 8 is exposed in the heating chamber 1 and there is no sharp edge, there is no danger that the user will accidentally cut his hand even if the user touches the side wall surface with bare hands.

Further, the configuration of the side wall 2 and the bottom plate 4 is the same, and the metal net 8 is fixed by being inserted.

Further, the catalyst layer 7 is periodically cleaned,
It is necessary to purify oil and dirt attached to the surface. This is performed by heating the catalyst layer to a high temperature. The higher the heating temperature, the higher the activity of the catalyst and the higher the purification performance.

In this embodiment, the bottom plate 4 is made of a stainless steel plate having excellent heat reflectivity. This is to reflect the radiant heat radiated from the first heater or the second heater and efficiently raise the temperature of the catalyst layer 7 provided on the side wall 2. FIG. 3 shows a graph of the temperature rise of the catalyst layer 7 when the bottom plate 4 is made of a stainless steel plate having a heat reflectance of 78% and when the bottom plate 4 is made of an iron plate having a heat reflectance of 55%. When the bottom plate 4 is made of a stainless steel plate, the temperature is 60 ° C. higher than when an iron plate is used. Therefore, the purification performance of oil and dirt was much better when the stainless steel plate was used.

According to the experimental results, the temperature rise of the catalyst layer 7 is not so different from the case where the iron plate is used as the bottom plate 4 when the thermal reflectance of the bottom plate 4 is less than 70%, but is not less than 70%. Then, the difference becomes remarkable. The use of an aluminum-plated steel sheet with a heat reflectance of 85% is about 70% greater than the case using an iron sheet
° C higher. Therefore, in practice, the heat reflectance is 70%.
It is preferable to make the above.

In order to increase the temperature of the catalyst layer 7 during purification of the catalyst layer 7, the bottom plate 4 is formed to have a high mountain shape at the center or a low valley shape so that the heat of the heater is efficiently transferred to the catalyst layer. The reflection improves the purification performance. Further, the catalyst layer 7
As described above, the purification performance can be improved by inserting a plate having a high peak or a low valley at the center and having a high thermal reflectance.

Further, since the side wall 2 is narrowed down by the thickness of the metal net 8, the upper plate 3 and the side wall 2 can be fixed in close contact with each other. It becomes faster and cooking performance improves.

[0019]

As described above, according to the cooking device of the present invention,
The following effects are obtained.

First, the structure for attaching the catalyst layer to the side wall is simple, and mass production has been facilitated. Secondly, L-shaped fittings and rivets which are not related to the original function are not required, and the cost can be reduced. Thirdly, no L-shaped bracket or rivet which is irrelevant to the original function is unnecessary, and only the metal net is exposed in the heating chamber.

Further, by using a metal having excellent reflectance such as stainless steel for the bottom plate, the temperature of the catalyst layer can be made higher than in the past, so that the purification performance when purifying the catalyst layer can be improved.

Further, the structure can be made such that the wind does not easily enter the heating chamber, so that the cooking performance can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a cooker according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part schematically showing a metal mounting structure according to an embodiment of the present invention.

FIG. 3 is a diagram showing a temperature rise curve of a catalyst layer according to an example of the present invention.

FIG. 4 is an enlarged sectional view of a main part schematically showing a metal net mounting structure in a conventional cooking device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heating chamber 2 Side wall 3 Top plate 4 Bottom plate 7 Catalyst layer 8 Metal net

Claims (2)

(57) [Claims] A heating chamber in which the food is placed; a heater installed in the heating chamber; a side wall forming a side surface of the heating chamber; an upper plate forming a top surface of the heating chamber; A bottom plate that forms the bottom surface of the heating chamber, a catalyst layer disposed on the side wall for decomposing oily dirt, and a metal net for holding the catalyst layer are provided. A cooker having a structure in which the catalyst layer is fixed by sandwiching the catalyst layer, and the metal mesh is fixed by sandwiching the metal mesh between the side wall and the upper plate and between the side wall and the bottom plate. 2. The cooker according to claim 1, wherein the bottom plate is formed of a metal having a heat reflectivity of 70% or more and having excellent heat reflectivity.